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# ABCD is a rectangle in which diagonal AC bisects ∠ A as well as ∠ C. Show that: (i) ABCD is a square.

Q: 8        ABCD is a rectangle in which diagonal AC bisects $\small \angle A$ as well as $\small \angle C$. Show that:

(i) ABCD is a square

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Given: ABCD is a rectangle with AB=CD and BC=AD $\angle$1=$\angle$2 and $\angle$3=$\angle$4.

To prove: ABCD is a square.

Proof :     $\angle$1=$\angle$4 .............1(alternate angles)

$\angle$3=$\angle$4 ................2(given )

From 1 and 2, $\angle$1=$\angle$3.....................................3

In $\triangle$ADC,

$\angle$1=$\angle$3          (from  3 )

DC=AD             (In a triangle, sides opposite to equal angle are equal )

A rectangle whose adjacent sides are equal is a square.

Hence, ABCD is a square.

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# Vba Obfuscator Github

The CyberWire's Research Saturday is presented by Juniper Networks. The code obfuscation provided by the Phoenix Protector is quite good when compared to other commercial obfuscators. Posts about blueteam written by Henry HON. 2; public final class 90. Ninja comunicate with the agents in secure channel encrpyted with AES-256 and the key is not hard coded but randomly generated on the campaign start , every agent connect to the C2 get the key and if the C2. Adam has 30 jobs listed on their profile. Cylance Blog BlackBerry Labs is a team of 120 software developers, architects, researchers, product leads and security experts, operating at the forefront of Research and Development in the cybersecurity space. You'll need to add a reference to the Microsoft VBScript Regular Expressions 5. I'm new to Java and working on cleaning up a fairly large Java. Many applications use this file format, the best known is MS Office. So you can bypass the countermeasures of the target systems like a boss until they "learn" the technique and behavior of SpookFlare payloads. Invoke-Expression obfuscation example. These documents, used for malicious purposes, are commonly referred to as maldocs. 3 Apache Nutch™ - 0. VBA Obfuscation Tools combined with an MS office document generator - Pepitoh/VBad. The Research •Motivation •Selecting 50 campaigns •Limiting the research scope – anything following the VBA/exploit •Stepping through the infection. Determines whether a token of the list in the delimiters parameter is present in a string. Just a quick post about a problem that security analysts are facing daily… For a while, malicious Office documents are delivered with OLE objects containing VBA macros. As long as it already is, this is only a subset. Distribution of malware under Windows in 2016 5. Rocket Kitten in Operation Woolen Goldfish). Don’t be afraid to extend or add to the Elevate Kit. net deobfuscate means the deobfuscate of. In this paper, we present PowerDrive, an open-source, static and dynamic multi-stage de-obfuscator for PowerShell attacks. Babel Obfuscator. The goal of macro_pack is to simplify exploitation, antimalware bypass, and automatize the process from malicious macro and script generation to final document generation. Learn More about CB Response. URL Encode and Decode Tool. There are many other ways to obfuscate PowerShell cmdlets. Emotet is commonly delivered in phishing campaigns via a macro-enabled Word document. The contents of a String can be accessed in various ways, including as a collection of Character values. doc was clearly the work of a rank amateur. NET helps to protect. It supports all features of. Quick Post: Analyzing Maldoc with “Do While” Loop in VBA Downloader. I produced videos for my oledump tool, you can find them on Didier Stevens Labs products page. Usually (if the programmer hasn't done something extra like obfuscation) then nearly all decompilers / assembly browsers would give you at least the code, probably not all the comments, and some functions may be inlined. Which again in turns breaking the CLIENT CODE because previously if client is referring the facade by A. For each 3 column creation and it will move/create a new row. The used code, before the obfuscation was applied, can be found here. Online version: obfuscator. However, […]. Macros are written in Visual Basic for Applications (VBA), which is well documented on the. Press question mark to learn the rest of the keyboard shortcuts. Original threat reports, blogs and threat notifications; our threat research team is at the cutting edge of emerging threats. since every feature of the language is a landmine of. NET Obfuscator. ScriptCryptor Compiler. VBA Emulation is hard and complex, because of all the features of the VBA language, of Microsoft Office applications, and all the DLLs and ActiveX objects that can be called from VBA. The malware expert Marco Ramilli collected a small set of VBA Macros widely re-used to “weaponize” Maldoc (Malware Document) in cyber attacks. /packer/ 6. Python Bytes is a weekly podcast hosted by Michael Kennedy and Brian Okken. – stomy Aug 8 '17 at 0:12. This includes all forms of data that Excel stores as numbers, such as dates/times and Boolean fields. CrunchCode - the obfuscator for Excel-VBA. You can use it and modify it as you wish. I put my deobfuscation script for Emotet on GitHub. Vba decompiler online found at cpap. Rubberduck is an open-source add-in for the VBA/VB6 IDE under [very] active development, that includes this functionality. Trying to copy a file from the Download section and placing it anywhere else is very difficult and won't work for me. Awesome Open Source is not affiliated with the legal entity who owns the "Inquest" organization. Note: A decryption Python script can be used to decrypt these obfuscated strings, and can be found on the TAU GitHub page here. How I evaded "next-generation" Cylance Smart AntiVirus in less than 15 minutes. The code obfuscation provided by the Phoenix Protector is quite good when compared to other commercial obfuscators. Anti-security techniques • Obfuscation • Crypter • Packer • FUD (Fully UnDetectable by antimalware) • etc. CB Response is the most complete Cyber Threat Hunting Solution. Copy and paste the following example in FirstExample. This tool allows C# binaries to be bootstrapped inside a payload, providing reliable means to bypass many common defences. A great place to read and participate in IT discussions. 06 KB download clone embed report print text 372. doc was clearly the work of a rank amateur. Posts about blueteam written by Henry HON. 4 Recherche & Analyses en Open Source 0. Keep in mind that this is only one example of an obfuscation technique. On the other hand, if you want to make an interactive application in excel you use VBA which exposes a large and rich set of objects. To protect VBA code, you can add a password right from the editor to prevent access to VBA code. For now it automatically detects and deobfuscates all obfuscation methods described in this post. The tool's job is to take a text string and show you various ways to obfuscate it. 1 post published by Didier Stevens on June 22, 2020. js versions. Recently this technique was used by criminal groups delivering banking trojans (e. It’s got a good flow, and I learned a bunch doing it. The podcast is published every weekday and designed to get you ready for the day with a brief, usually 5 minute long, summary of current network security related events. Get Oracle Training in Chennai with experienced Trainers. olevba is a script to parse OLE and OpenXML files such as MS Office documents (e. DISCLAIMER: This is only for testing purposes and can only be used where strict consent has been given. Download latest source on Github Introduction In this tip, I will show you how to get embedded files from the most commonly used Microsoft Office document; Word, Excel and PowerPoint without using the original programs. Thanks to our sponsor Enveil, closing the last gap in data security. open the file. Date: 11/10/2016. If you have more than one parallel port, then the other ports will be named parport1, parport2, … parportN. I would like this software to be developed for Windows platform. hdlc code | hdlc code | hdlc source code | hdlc verilog code | hdlc source code c | hdl code | hdl coder | hdl coder pdf | hdl coder ram | hdl coder vba | hdl c. Improving defenses against human-operated ransomware. The threat actor's unsophisticated but creative toolset has been evolving a lot since the inception date, may still be in development, and leverages Sojson obfuscation, NSIS installer, Python, open-source code, GitHub distribution, Go language, as well as Google Drive-based C2 channels. Roger tiene 11 empleos en su perfil. A few T-SQL versions of this algorithm, both working for SQL Server 2000 and up: Vol 2 #42 Obscure data with the Rot13 Cipher. 0 ; The Visual Studio Extension supports VS 2015, 2013, 2012, 2010; Windows 10, 8, 7, Vista, XP (32. I have even released in the last weeks a restricted Beta 2 of MZ-Tools 8. Reverse Engineering an Obfuscated Malicious Macro. This sample code has been written based on the environment and database setup done in the previous chapter. The entire process took less than 30 minutes. Github Repositories Trend kgretzky/python-x86-obfuscator This is a **WIP** tool that performs shellcode obfuscation in x86 instruction set. José Miguel tiene 6 empleos en su perfil. Download latest source on Github Introduction In this tip, I will show you how to get embedded files from the most commonly used Microsoft Office document; Word, Excel and PowerPoint without using the original programs. comprehensive analysis of the source code and detailed result listing after the program has run:. NET executable assemblies without touching disk, and implements the Token Duplication UAC bypass attack. Integrating Apps with other platforms. Word, Excel), to extract VBA Macro code in clear text. We all do! Chances are that you want to shelter your precious intellectual property. There's an entire series of these good reads, and Kirk has contributed significantly to ViperMonkey. URL encode your data in a hassle-free way, or decode it into human-readable format. A few T-SQL versions of this algorithm, both working for SQL Server 2000 and up: Vol 2 #42 Obscure data with the Rot13 Cipher. Users seeing a broken installation of PyPy can fix it after-the-fact if they have sudo rights,. Method() then now it has to be changed to the obfuscated name i. The conversions are in fact really good, but there are downsides: Nitro cloud allows only 5 free conversions without registration, with account it is limited to 5 per month (or pay, or have some spare email addresses ;). Obfuscate vbscript. This blog provides useful, and well-written articles related to computing, programming, algorithms, data structures and online tools. Dechaining Macros and Evading EDR. 5 million hits from bright technical minds across the globe, W3LC urges to read, enjoy, and comment. Microsoft office documents are a common vehicle used by malware authors to deliver malware. Each of these fields has a long stretch of text and a four-letter 'key'. Fireeye made a white paper on cmd. CyberChef is a web application created by GCHQ, it is often referred to as the swiss army knife tool of cyber, and can be used for encryption, encoding, compression and data. Common Vulnerabilities and Exposures (CVE®) is a list of entries — each containing an identification number, a description, and at least one public reference — for publicly known cybersecurity vulnerabilities. It uses a combination of simulated keystrokes, mouse movement and window/control manipulation in order to automate tasks in a way not possible or reliable with other languages (e. Overall, the VBA code executes a multi-stage high obfuscation PowerShell script in the attempt to evade AV and security solutions. The document contains macros written in Visual Basic which drop a number of files to disk which run malicious code and will also create scheduled tasks so the malware can persist on disk. They are in no particular order. Awesome Red Teaming List of Awesome Red Team / Red Teaming Resources. Let Google Apps Script do the work; Using the Google Sheets V4 API from VBA to integrate Sheets and Excel. # re: Part 1: Copy a SharePoint List Programmatically If you are programming using the SharePoint object model, then I am sure you know thisbut hopefully some of your readers will benefit. Four projects with COM Shims for VBA (32-bit and 64-bit), VB 6. Just follow their instructions online. The interesting new feature of the Emotet variants associated with this campaign was the inclusion of a "Do While" Loop within the VBA macro code that wrapped the WMI call and PowerShell process. Tool Latest release Free software Cyclomatic Complexity Number Duplicate code Notes Apache Yetus: A collection of build and release tools. APT32 has also encoded payloads using Base64 and a framework called "Dont-Kill-My-Cat (DKMC). Microsoft has just patched an important vulnerability in Microsoft Word during its latest patch Tuesday cycle. > That's basically Rubberduck telling the user it's out of sync. The dropper and the payload are quite similar to the previous versions but the author modified some public information such as MUTEX name, obfuscation keys. Exe obfuscator Exe obfuscator. 4 Recherche & Analyses en Open Source 0. This function or constant is enabled with the statement Option VBASupport 1 placed before the executable program code in a module. Hashids is a small open-source library that generates short, unique, non-sequential ids from numbers. Our team is delving into the dark web, detonating hundreds of thousands of legitimate and malicious samples each day, identifying malicious behaviors, techniques, and processes, and broadcasting advisories to improve protection and response. •The macro_pack is a tool used to automatize obfuscation and generation of retro formats such as MS Office documents or VBS like format •This tool can be used for redteaming, pentests, demos, and social engineering assessments •macro_pack will simplify antimalware solutions bypass and automatize the process from vba generation to final Office. A free and efficient obfuscator for JavaScript (including partial support of ES2019). I put my deobfuscation script for Emotet on GitHub. NET exes and dlls against reverse-engineering by making it difficult for a third-party to access your source code. For the last few years, we have observed various hacker groups like ( APT12 to Turla ) uses various techniques to deliver malware on the system or network. ⚠ Pay attention to the first two lines!. The main reason for extreme popularity and success of WebDriver is its ability to easily simulate the action of a real website user. The intention was to build an open source development community around the software, and provide a free and open alternative to Microsoft Office. JDK does not provide direct API to read or write Microsoft Excel or Word document. The decision regarding where and when to obfuscate an assembly actually occurs in a project's post-build event. 10/07/2017 | Author: Admin. NET Reactor and Crypto Obfuscator and rustemsoft Skater. The resultant code is slightly bigger in size than the original code and there is almost no execution speed differences as well and the encoded project doesn't need any extensions or run-times. Once we know which stream contains the VBA macro, we can dump its contents with the -s switch followed by the stream number. Description: This DOS batch guide brings structure into your DOS script by using real function like constructs within a DOS batch file. ninja) 317 PHP is the VBA of the web: it's ugly but too useful to ignore. The VBA developers of the past was the VP and a few interesting individuals. The exploit sample detected by the researchers was using the same obfuscation technique as exploits for CVE-2018-8174, spotted in the wild by Qihoo 360 in April 2018. VBA XLS + Invoke-Obfuscation. Heading home from another great week at Hack-In-The-Box in Amsterdam. be found on GitHub with a quick search. Microsoft has just patched an important vulnerability in Microsoft Word during its latest patch Tuesday cycle. Four projects with COM Shims for VBA (32-bit and 64-bit), VB 6. The NUXI Problem. Doc with macro and VBA and WMI This word document has a macro with some benign code, likely for deception and to make static analysis more difficult. The transformations applied on the code allows the macros to evade signature scans from Antivirus softwares. Suppose we have 2 tables called Orders and …. The password value of the input attribute displays a field where the user can type a password into a form. For worldwide interoperability, URIs have to be encoded uniformly. Hexo Hexo is a blazing fast and yet simple blog framework powered by Node. ScriptCryptor Compiler. GitHub - in0finite/EncryptedDllLoader: Encrypts and loads encrypted DLLs. Thanks both of you for the reply. AutoIt v3 is a freeware BASIC-like scripting language designed for automating the Windows GUI and general scripting. Dec 21, 2019: Pegasus and. Wonder How To is your guide to free how to videos on the Web. Note: oledump plugins cannot be integrated straight away into olevba, some changes in the code are needed. With this clear understanding, I guess many of such questions would be automatically answered like - how to make bold font in ReadMe file, or how to insert image etc. Access to these APIs are often over HTTPS, which gives the adversary an additional level of protection. 1 is a free small tool that is used by web programmers to encode their PHP source code so it becomes very hard to understand. com/1x75ha2/c3u2. The dropper and the payload are quite similar to the previous versions but the author modified some public information such as MUTEX name, obfuscation keys. Swift strings are represented by the String type. The supported format writers automatically insert the data blobs if it is present in the workbook and associate with the worksheet names. Free online heuristic URL scanning and malware detection. Join (List [,delimiter]) Parameter Description. VBA Emulation is hard and complex, because of all the features of the VBA language, of Microsoft Office applications, and all the DLLs and ActiveX objects that can be called from VBA. It's free to sign up and bid on jobs. A single Excel document resulted in an attack that consisted of programs and scripts written in several languages: VBA, JavaScript, VBScript, PowerShell, and C#. Commonly, phishing emails delivering malicious attachments (T1193) serve as the initial access vector. Enable Microsoft Cloud App Security (MCAS) integration with identity protection (E5): Microsoft Cloud App Security is a UEBA product monitoring user behavior inside SaaS and modern applications. ViperMonkey is an experimental toolkit that I have been developing since early 2015, to parse VBA macros and emulate their execution. @Filippo, You can store text in any User cell you create, it doesn’t have to be the Prompt cell. Good day, We are building a project that uses WordPress for the marketing(normal pages, blogs, etc) and angular for the more functional side of this project. Please be sure to back up your work and test this before using it. One of the best technique hackers groups used is to write malicious code and obfuscate it and embed with Office documents […]. Python API to use olevba from your applications. txt) or read online for free. hdlc code | hdlc code | hdlc source code | hdlc verilog code | hdlc source code c | hdl code | hdl coder | hdl coder pdf | hdl coder ram | hdl coder vba | hdl c. py olevba is a script to parse OLE and OpenXML files such as MS Office documents (e. Presentation at Black Hat Europe 2019, about malicious VBA Macros and recent advances in the attack and defense sides. DA: 50 PA: 39 MOZ Rank: 15. Some criteria for deciding could be: What are my time constraints?. BhECP has one meaningful line:. Decompile referenced assemblies in a Visual Studio project. There’s code associated with the document, and with a module named oHEwmITMTRZuEi. Needs to have 2 panes. Reverse Engineering an Obfuscated Malicious Macro. The decision regarding where and when to obfuscate an assembly actually occurs in a project's post-build event. Hi friends, Today we will show you how we can refresh a dataset published in Power BI from a Power Shell Script that we would invoke at the end of our ETL process. By default, Excel has a limited number of charts. Examples are better than words, let's take the word "xor". pdf - Free download as PDF File (. We all do! Chances are that you want to shelter your precious intellectual property. net obfuscator github ,. Allows you to manage a changing of variable and function names the Javascript Obfuscator has found in project's files. About VBA Macros. Hello, Man, you don’t know how many times your site helped me. be found on GitHub with a quick search. Awesome Open Source is not affiliated with the legal entity who owns the "Inquest" organization. Arvind Kewat 113,967 views. Nowadays one of the most frequent cybersecurity threat comes from Malicious (office) document shipped over eMail or Instant Messaging. VBA + Invoke-Obfuscation. The Apache POI team is pleased to announce the release of XMLBeans 3. 0 Macros to embed standard malicious behavior in Excel files and then execute phishing campaigns with these documents. VB Decompiler is an advanced tool that can decompile programs (EXE, DLL, or OCX) written in Visual Basic 5. The tool's job is to take a text string and show you various ways to obfuscate it. •PowerShell, VBScript, VBA, JScript are all native to Windows •Can be run manually through cscript, wscript, powershell •Integrated into many frameworks and apps •Office Macros can execute local or remote scripts •COM scriptlets •MSBuild procedure •Dynamic Web Applications (HTA). There’s code associated with the document, and with a module named oHEwmITMTRZuEi. Obfuscar is a basic obfuscator for. (Citation: GitHub Mimikittenz July 2016) After acquiring credentials from web browsers, adversaries may attempt to recycle the credentials across different systems and/or accounts in order to expand access. Expressions are used to perform one or more operations upon a series of variables, literal strings, and/or literal numbers. Hi all, I've been playing with the community dotfuscator within vs. The Word document VBA macro obfuscation was also different but the base64 encoded script was the same in both samples. TECH Anonymous Expect us! 55,477 views. Professional Interests: Instrumentation and Control DISCLAIMER: Any advice or opinions posted here are my own, and in no way reflect that of MathWorks. this question is very interesting ! In one of my programs I want to quit the process and don't show message i use Application. Sometimes when the obfuscation is complete, some characters can mess with the VBA, such as the double-quotation character ("). GitHub Gist: instantly share code, notes, and snippets. Microsoft Office 2010 Find how to content, sample code, SDK and API documentation, VBA references, training, and technical articles for developing solutions and customizing Microsof. Sorting a dictionary by key in VBA. Full Stack Web Development. Fog Creek recently spun out Trello, a web based project management tool with applications for anything from product development to home renovations to wedding planning. PHP Obfuscator 0. In fact, there is a tool available on GitHub called Invoke-Obfuscation. A summary of changes is available in the Release Notes. Vba obfuscator github A free and efficient obfuscator for JavaScript (including partial support of ES2019). If you could share your code maybe we could try to assist you with this ("use of unsafe function"). frame Furthermore, the module documentation of refinery. Developer tools ›. GitHub Gist: instantly share code, notes, and snippets. Introduction For a malicious actor to compromise a system, they need to avoid being detected at the point of entry into the target’s network. " From the github page, "It was designed with automation and integration in mind. It has a bunch of garbage, but halfware through calls pNTOsHzwn (BhECP). In this post, I want to talk about and show off a code execution method which was shown to me a little while back. The prompt cell is intended as a comment for what the user cell is for – so that shape designers can come back and maintain/modify a shape in the future and remind themselves of what the variables (User-cells) are for. Still, if you are willing to give the “bad guys” some kind of chance to deal with you code, you may use “Obfuscation”. This is a data structure that can store a fixed-size sequential collection of elements of the same type. Unfortunately, when I do the actual replace as per the code. Note: python-oletools is not related to OLETools published by BeCubed Software. The macro_pack is a tool used to automatize obfuscation and generation of MS Office documents for pentest, demo, and social engineering assessments. Exe obfuscator Exe obfuscator. Exe Obfuscator Github. Office 365 AMSI Bypass (fixed) 23 Mar 2019 Introduction. When the document is being opened (Document_Open() subroutine), the vba creates two (same) files which are a text-only copy of the /word/document. But for the sake of completion I wanted people's opinions on locking up vba to prevent people from stealing or abusing the code. 0 Macros to embed standard malicious behavior in Excel files and then execute phishing campaigns with these documents. One tool, a VBA macro targeting Microsoft Outlook, uses the target's email account to send spearphishing emails to contacts in the victim's Microsoft Office address book. Posts about blueteam written by Henry HON. Invoke-Expression obfuscation example. This report is generated from a file or URL submitted to this webservice on November 7th 2016 02:07:34 (UTC) and action script Heavy Anti-Evasion Guest System: Windows 7 32 bit, Home Premium, 6. The recommended way to download and install/update the latest stable release of oletools is to use pip: On Linux/Mac: sudo -H pip install -U oletools; On Windows: pip install -U oletools; This should automatically create command-line scripts to run each tool from any directory: olevba, mraptor, rtfobj, etc. Custom HTTPS capable C2 server uses a cgi and reverse shell clients written in Powershell / Python. By default, Office files support VBA (Visual Basic for Applications) code. The w field holds formatted text. We want to encrypt it with the key "cle". On the other hand, if you want to make an interactive application in excel you use VBA which exposes a large and rich set of objects. This document provides a model for using Microsoft Excel's embedded macro language, Visual Basic for Applications (VBA) to automate reporting through Excel. You can also decode those ids back. The bug affects all supported versions of Microsoft Word, but will be fixed this week. Hi friends, Today we will show you how we can refresh a dataset published in Power BI from a Power Shell Script that we would invoke at the end of our ETL process. It aims to help Red & Blue team for attack or defense. 6); To install/upgrade in an existing file, use VBA-Web - Installer. Reading Time: 16 minutes Prologue. Well, obfuscation is a good way to protect our intellectual properties and it's better than just leaving our confidential information in plain text. Note Currently, XML is not supported in 4. •The macro_pack is a tool used to automatize obfuscation and generation of retro formats such as MS Office documents or VBS like format •This tool can be used for redteaming, pentests, demos, and social engineering assessments •macro_pack will simplify antimalware solutions bypass and automatize the process from vba generation to final Office. >>> Python Software Foundation. Figure 1: Different data structures. Common Vulnerabilities and Exposures (CVE®) is a list of entries — each containing an identification number, a description, and at least one public reference — for publicly known cybersecurity vulnerabilities. below condition table request. GitHub Gist: star and fork y0no's gists by creating an account on GitHub. The operator opens it and sees an empty table in front of him, fills it in, the macro that is triggered after each change saves the book to the network folder as a report-copy named data_machine_change. In response to this threat, Microsoft has recently provided an ability to block the execution of VBA macros, in files downloaded from the Internet, for Office3 2013 and 2016. PHP 8 to Add a JIT (krakjoe. Please be sure to back up your work and test this before using it. Instead of trying to fix the code manually, which can be a pain, running STRING obfuscation can remove these bad characters. Notes: This is Excel-VBA code that will (hopefully) dump the contents of all. Basic C/C++ code obfuscator. GitHub Gist: instantly share code, notes, and snippets. If a signature is matched like a hash, malware can be detected before it executes, but if it's in a new/unknown language, antivirus have to wait for it to execute and than detect if anything suspicious is seen. As long as it already is, this is only a subset. @Filippo, You can store text in any User cell you create, it doesn’t have to be the Prompt cell. kr and etc. Digite na linha de comando:. The concrete focus of the paper is on reversing layout obfuscation, a popular transformation which renames key program elements such as classes, packages, and methods, thus making it difficult to. This obfuscation again builds off of VBA ‘s interpretation of Walmart Information Security spencer. Attackers will obfuscate their code as they obviously don’t want security analysts to see what they are trying to achieve. x site, on how to upgrade Visual Basic 6 to Visual Basic 6. https://github. zip, challenge, fireeye, flare-on, flareon, include, obfuscation, PHP, PNG Fireeye - Flare-On Challenge 1 I've been playing the Flare On challenge recently and got through a few levels. Analyse the VBA code: If it is obfuscated, you can use debugging (using Word/Excel/PowerPoint) and/or selective execution of code (e. This banner text can have markup. Is VBScript/VBA Dead or Dying? The answer is NO! On Windows Platform, the Windows Scripting Host Environment is still the best place for VBScript, where VBScript is a handy, lightweight, powerful programming language/scripting language for daily administrative tasks. How to deobfuscate a. Best PHP Obfuscator is a software that we are going to offer as a demo service on our website. 0 ; The Visual Studio Extension supports VS 2015, 2013, 2012, 2010; Windows 10, 8, 7, Vista, XP (32. The goal of macro_pack is to simplify antimalware solutions bypass and automatize the process from vba generation to final Office document generation. VBA Macro Run Automatically Download files Create files Execute a file Run a system command Call any DLL Inject shellcode Call any ActiveX object Simulate keystrokes Note: It is possible to write malware completely in VBA. Why red teaming important? The information security stakes for organizations have never been higher. Rubberduck VBA open-source COM add-in project integrates with VBE Visual Basic Editor works in VBA, 32-bit, 64-bit, VB6. Obfuscation done by pros. Enable Microsoft Cloud App Security (MCAS) integration with identity protection (E5): Microsoft Cloud App Security is a UEBA product monitoring user behavior inside SaaS and modern applications. The Emotet group continues to tweak their strategy to avoid AV. JavaScript obfuscator. VBA + Invoke-Obfuscation Raw. jjencode 4. https://twitter. The entire process took less than 30 minutes. GitHub Desktop is a seamless way to contribute to projects on GitHub and GitHub Enterprise. txt " # The path to the file that contains a list of different filenames you want to use for your generated files path_gen_files. Office 365 AMSI Bypass (fixed) 23 Mar 2019 Introduction. Hello, Man, you don’t know how many times your site helped me. In this blog I’ll cover 15 ways to bypass the PowerShell execution policy without having local administrator rights on the system. * Hi all, I'm working on a new project, and this is the first time I've ever looked for a JavaScript obfuscator. psd1 Invoke-Obfuscation beat windows defender. It remains to eliminate arrangements having two queens on the same diagonal. Ask Darryl if your technology is not listed. By default, PowerShell is configured to prevent the execution of PowerShell scripts on Windows systems. fG at Reverse Engineering Mac OS X FruitFly’s dropper script and its missing tricks. Read the latest research here. NET assemblies (including the names of methods, properties, events, fields, types and namespaces) to a minimal set, distinguishable in most cases only by signature. com, stackoverflow. These documents, used for malicious purposes, are commonly referred to as maldocs. eru on July 25, 2016 Yes, VBA is a break away from the nice purely functional world of spreadsheets. k-Means is not actually a *clustering* algorithm; it is a *partitioning* algorithm. py, this will give me an overview of the streams (including VBA macro streams) contained in the document: Stream 8 has an M indicator: this stream contains VBA macros. 4096 was an arbitrary choice—I could have changed the exploit to send as much or as little data as I liked. codepad is an online compiler/interpreter, and a simple collaboration tool. FLOSS helps fight against malware authors who commonly obfuscate strings in their programs to deter static and dynamic analysis, and can extract strings that are deobfuscated by. During a recent cyber exercise, I was able to recompile a POC from Github as a Reflective DLL and fire it with Cobalt Strike. com,1999:blog. This implementation allows crafting. Suppose we want to store 4 bytes (U, N, I and X) as two shorts: UN and IX. What can a malicious macro do? Trigger automatically when the document opens, closes, etc. Because obfuscation isn't security and because OS obfuscation is basically nonsense. A handy guide of sorts for any computer science professional, Data Structures And Algorithms Made Easy: Data Structures and Algorithmic Puzzles is a solution bank for various complex problems. exe code to emulate Windows command prompt commands. Draw a circle. It uses the "Invoke-Obfuscation" tool to obfuscate the payloads. │ ├───Obfuscation │ │ └───Invoke-Obfuscation │ ├───P0wnedshell │ ├───Piper │ ├───VBA_RunPE │ ├───WierdHTA │ ├───Winpayloads - Python2. When the document is being opened (Document_Open() subroutine), the vba creates two (same) files which are a text-only copy of the /word/document. VBA obfuscation; How to update modules automatically in VBA. VBA–Code statistics; all identifiers with original names and camouflaged names. It has a bunch of garbage, but halfware through calls pNTOsHzwn (BhECP). (Citation: GitHub Mimikittenz July 2016) After acquiring credentials from web browsers, adversaries may attempt to recycle the credentials across different systems and/or accounts in order to expand access. VBA–Code statistics; all identifiers with original names and camouflaged names. Having said all that, for whatever reason the most commonly used practice developer's have chosen is to use the plural form. Malicious Macro Generator v2. NET technology. A web filter – such as WebTitan – adds an additional layer of protection against web-based attacks by preventing end users from visiting malicious websites where malware is downloaded. PHP Obfuscator 0. Automated Obfuscation of Windows Malware and Exploits Using O-LLVM. GitHub Gist: instantly share code, notes, and snippets. I published the following diary on isc. NET assemblies (including the names of methods, properties, events, fields, types and namespaces) to a minimal set, distinguishable in most cases only by signature. 8 Chr, Chr$, ChrB, ChrB$, ChrW Functions Named Arguments No Syntax Chr(charactercode) Chr$( charactercode) ChrB( charactercode) ChrB$( charactercode) ChrW. PE보다 스크립트 - 핵인싸 악성코드의 진단 우회방식 1. Note: -o option is for obfuscation to prevent some annoying AV yelling. 4 Thousand at KeywordSpace. If you have more than one parallel port, then the other ports will be named parport1, parport2, … parportN. VBA + Invoke-Obfuscation. It is very simple to use: No configuration Everything can be […]. Suppose we want to store 4 bytes (U, N, I and X) as two shorts: UN and IX. The HTML Blink Element () is a non-standard element which causes the enclosed text to flash slowly. JDK does not provide direct API to read or write Microsoft Excel or Word document. PowerShell Script: Encrypting / Decrypting A String – Function Encrypt-String By: Brenton BlawatThe encryption and decryption of strings is essential when creating an enterprise product that has clear text passwords. ECMAScript is the official name of the language. Learn more Best practice for storing and protecting private API keys in applications [closed]. For now it automatically detects and deobfuscates all obfuscation methods described in this post. php on line 143. PHP 8 to Add a JIT (krakjoe. Nowadays one of the most frequent cybersecurity threat comes from Malicious (office) document shipped over eMail or Instant Messaging. I am going to use invoke-obfuscate PowerShell script, Invoke-Obfuscation is a PowerShell v2. The malware expert Marco Ramilli collected a small set of VBA Macros widely re-used to "weaponize" Maldoc (Malware Document) in cyber attacks. gistThat Idea; Integrate VBA with Github. Dosfuscation white paper: https://www. While there has been a variety of ways in which they have been used, one of the more prevalent is through the use of macros. Plugins: Webpack plugin: webpack-obfuscator; Webpack loader: obfuscator-loader; Gulp: gulp. Hash Sha512: Encryption and reverse decryption. 6); To install/upgrade in an existing file, use VBA-Web - Installer. You need to Obfuscate the VBA Script in order to make it FUD (Fully UnDetectable) You can use the ChrW() function, which allows you to type ASCII characters instead of the actual characters themselves. To rename in Manually - mode you should double click on a necessary name and type a new one. [10] https://gist. The supported format writers automatically insert the data blobs if it is present in the workbook and associate with the worksheet names. So before the reader signs up to this adventure, I'd like to make them aware of a few things. Integrating Apps with other platforms. NET assembly from being decompiled into an understandable language. Look at most relevant Vba decompiler online websites out of 74 Thousand at KeywordSpace. ViperMonkey is a Python project including a VBA macro parser, a VBA emulation engine and a set of tools for malicious macro analysis. NET assembly from being decompiled into an understandable language. K that serves over 24 million customers through its 12000 post offices and 3000. Microsoft Corporation and Nokia Corporation today announced that the Boards of Directors for both companies have decided to enter into a transaction whereby Microsoft will purchase substantially all of Nokia’s Devices & Services business, license Nokia’s patents, and license and use Nokia’s mapping services. The VBA Code Profiler System (VBACP) provides a system to profile Microsoft® VBA based applications. If you are using the live version of the Kali Linux operating system your username and password will be: username: root. Turn on AMSI for Office VBA if you have Office 365. This is the. (And a few others) The following were my results: 1. template_file = r " C: t mp V bad E xample T emplate t emplate. por José Eduardo Chamon categoria de Base de Dados Livro Edição 3 set 2014 Baixar Livro EXCEL VBA I por José Eduardo Chamon em PDF EPUB Gratis Portugues ou Ler Online. I decided to release it publicly on GitHub, so that malware analysts can start using it, and contribute to its development. NET exe because have a problem with a resource. VBA Emulation is hard and complex, because of all the features of the VBA language, of Microsoft Office applications, and all the DLLs and ActiveX objects that can be called from VBA. I’m a podcaster, writer, and software developer. # re: Part 1: Copy a SharePoint List Programmatically If you are programming using the SharePoint object model, then I am sure you know thisbut hopefully some of your readers will benefit. Because obfuscation isn't security and because OS obfuscation is basically nonsense. Using code to manipulate data and flow to organize, but I think that code some parts will be improve my development. If index is greater than the number of tokens in the string, returns an empty string. Most of the obfuscation can be completely restored (eg. This is the Schneiken dropper - which is an interesting malware, written in VBS and comes with multiple layers of code obfuscation. Many of us probably didn't even know that "Signing a deployment was made optional in the. Macros are written in Visual Basic for Applications (VBA), which is well documented on the. As we had been getting more and more uploads of Word files and malicious XML files (and not all of them triggered or showed outgoing network traffic), we spent some time and added a small VBA "de-obfuscating" engine that helps extracting C2 IPs regardless of the runtime behavior. Arvind Kewat 113,967 views. One tool, a VBA macro targeting Microsoft Outlook, uses the target's email account to send spearphishing emails to contacts in the victim's Microsoft Office address book. VBA Obfuscation Tools combined with an MS office document generator Fbc ⭐ 343 FreeBASIC is a completely free, open-source, multi-platform BASIC compiler, with syntax similar to MS-QuickBASIC, that adds new features such as pointers, unsigned data types, inline assembly, object orientation, and many others. Excel exclusively uses data that can be fit in an IEEE754 floating point number, just like JS Number, so the v field holds the raw number. The infection starts with a malicious Word document sent through email. below condition table request. ECMAScript is the official name of the language. io - JavaScript Obfuscator Tool Provided by Alexa ranking, obfuscator. That is to say K-means doesn’t ‘find clusters’ it partitions your dataset into as many (assumed to be globular – this depends on the metric/distance used) chunks as you ask for by attempting to minimize intra-partition distances. Download Windows help file; Download Windows x86-64 embeddable zip file; Download Windows x86-64 executable installer; Download Windows x86-64 web-based installer. On Thursday, Proofpoint researchers Michael Raggi and Dennis Schwarz said that. Blinking text is frowned upon by several accessibility standards and the CSS specification allows browsers to ignore the element. I am able to obfuscate the dll, that means the API method/class name also got changed. Note Currently, XML is not supported in 4. VBad is fully customizable VBA Obfuscation Tool combined with an MS Office document generator. And now we come to the step which is the biggest reason why I recommended you write your stub first. Most of the obfuscation can be completely restored (eg. Empire or Unicorn can be used to create payloads. All string / variable / function encryptions by all obfuscators were easily de-obfuscated by de4dot de-obfuscator. A few T-SQL versions of this algorithm, both working for SQL Server 2000 and up: Vol 2 #42 Obscure data with the Rot13 Cipher. However, they use very basic obfuscated techniques when they are compared to sophisticated threats. PowerShell Obfuscation: Stealth Through Confusion, Part II To get into the spirit of this post, you should probably skim through the first few slides of this presentation by Daniel Bohannon and Le Holmes given at Black Hat 2017. A suspected nation state-sponsored hacking group attempted to infiltrate US utility firms in July, researchers say. VBA–Code statistics; all identifiers with original names and camouflaged names. The obfuscator is using array-based rearranging to mutate original code, and protects all commands and strings such as the command and control (C2) server address. 4 Thousand at KeywordSpace. One place for all extensions for Visual Studio, Azure DevOps Services, Azure DevOps Server and Visual Studio Code. Best PHP Obfuscator is a software that we are going to offer as a demo service on our website. What is Code Signing? Code signing is the method of using a certificate-based digital signature to sign executables and scripts in order to verify the author’s identity and ensure that the code has not been changed or corrupted since it was signed by the author. Echo and then all you need to do is to run the source code which should print out the original un-obfuscated VBS source. DA: 44 PA: 7 MOZ Rank: 91. I was trying to use the Javascript Obfuscator 4. It offers a DOS function collection, tutorials and examples, plus a forum to discuss related topics. Search for jobs related to Taxi booking app source code github or hire on the world's largest freelancing marketplace with 17m+ jobs. Obfuscate vbscript. Malwarebytes Anti-Rootkit BETA is a free, cutting edge rootkit scanner & remover that detects and eliminates even the nastiest malicious rootkits. MATLAB Central contributions by Debarati Banerjee. Get Oracle Training in Chennai with experienced Trainers. The problem was that , for many people, showing the parameters in MVC is not something that they want. If you have more than one parallel port, then the other ports will be named parport1, parport2, … parportN. It has a bunch of garbage, but halfware through calls pNTOsHzwn (BhECP). Many of us probably didn't even know that "Signing a deployment was made optional in the. macro_pack is a tool used to automatize obfuscation and generation of MS Office documents for pentest, demo, and social engineering assessments. Free Online VBScript/VBS Obfuscator/Defuscator. Revoke-Obfuscation is a framework that transforms evasion into a treacherous deceit. A handy guide of sorts for any computer science professional, Data Structures And Algorithms Made Easy: Data Structures and Algorithmic Puzzles is a solution bank for various complex problems. The goal of macro_pack is to simplify exploitation, antimalware bypass, and automatize the process from malicious macro and script generation to final document generation. How to update modules automatically in VBA Integrate VBA with Github. * Hi all, I'm working on a new project, and this is the first time I've ever looked for a JavaScript obfuscator. Adversaries may also acquire credentials by searching web browser process memory for patterns that commonly match credentials. olevba is a script to parse OLE and OpenXML files such as MS Office documents (e. Posted on September 21, 2019 September 22, from the new Emotet campaigns are not nearly as complicated as they have been in the past with multiple layers of obfuscation and varying techniques with compression, arrays, character substitutions, and DOSFuscation etc,. This is ultimately the route I have chosen and if you look at popular apis like github and twitter, this is what they do. Why red teaming important? The information security stakes for organizations have never been higher. I recommend using windows 7 64 bit as your sandbox OS. VBA code contained in Module Streams is made up of compiled code (PerformanceCache) and source code (CompressedSourceCode). 0 ; The Visual Studio Extension supports VS 2015, 2013, 2012, 2010; Windows 10, 8, 7, Vista, XP (32. Would appreciate some opinions on effectiveness etc Any useful suggestions besides this would be appreciated(not too costly/free/ your opinion on using vba). VBad is fully customizable VBA Obfuscation Tool combined with an MS Office document generator. PS: the "limited" level of obfuscation that you get is such that one can recover the code (with some of the variable names, but without comments and docstrings). The VBScript source code for ROT47 VBScript obfuscator is maintained in github and the following is the core implementation: Function Rot47(str) Dim i, j, k, r j. I recommend using windows 7 64 bit as your sandbox OS. Empire or Unicorn can be used to create payloads. What is Eazfuscator. NET exes and dlls against reverse-engineering by making it difficult for a third-party to access your source code. git clone infosecn1nja-Red-Teaming-Toolkit_-_2018-08-15_07-43-01. It uses the “Invoke-Obfuscation” tool to obfuscate the payloads. Author Erik Pistelli Posted on October 6, 2019 Categories Video 2 Comments on Video: Analysis of a multi-stage malware (doc -> vba -> jscript -> exe -> shellcode -> mapped exe -> iat rebuild) Video: Solving VM-based challenges using Cerbero. Some analyzed threats examples include: Step By Step Office Dropper Dissection, Spreading CVS Malware over Google, Microsoft Powerpoint as Malware Dropper, MalHIDE, Info Stealing: a New Operation in the Wild, Advanced All in Memory CryptoWorm, etc. That’s why I’m releasing the Phoenix Protector for free: nowadays, writing a commercial obfuscator doesn’t make much sense to me. How Antivirus works • Based on heuristic • Based on signature • Based on cloud 3. Thus, at end, obfuscation buys time by enforcing reversers to spend resources and time to break a code. More details on the techniques used by this campaign will be discussed in the following section. io - JavaScript Obfuscator Tool Provided by Alexa ranking, obfuscator. Improving defenses against human-operated ransomware. Figure 1: Different data structures. A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data. Download the latest release (v4. Getting started with VbaGit. None of them knowing how to program, nevermind in VB. VBA code contained in Module Streams is made up of compiled code (PerformanceCache) and source code (CompressedSourceCode). SANS Internet Stormcenter Daily Network/Cyber Security and Information Security Stormcast By Johannes B. javascript-obfuscator plugin for Webpack. The VBA Code Profiler System (VBACP) provides a system to profile Microsoft® VBA based applications. It turns out that with a little imagination and creativity, we can format and configure the default charts so that the effect is like many other kinds of charts. VBA is a GBA emulator written in C. js, download any of these remote LTS versions locally, set up aliases so you can easily switch between downloaded Node versions, and automatically use the version of node. Best PHP Obfuscator is a software that we are going to offer as a demo service on our website. 000 downloads, version 3. So we downloaded it as well as LuckyStrike form GitHub. 07e0472: Collection of github dorks and helper tool to automate the process of checking dorks. With over 1. The HTML Blink Element () is a non-standard element which causes the enclosed text to flash slowly. A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Common Vulnerabilities and Exposures (CVE®) is a list of entries — each containing an identification number, a description, and at least one public reference — for publicly known cybersecurity vulnerabilities. That's where WhatIsMyBrowser. Ask Darryl if your technology is not listed. View Ryan Waszak’s profile on LinkedIn, the world's largest professional community. Stuffed with personal touch & humor by Anwar Jamal Faiz. excel word vba programm software code macro obfuscator obfuscating obfuscation schutz schützen sicherung passwort entfernen knacken verschlüsselung verschlüsseln analyse codierung tarnung tarnen excel word vba program software code macro obfuscator obfuscating protection safeguard password. The Art & Business of Making Games. So we downloaded it as well as LuckyStrike form GitHub. In several cases we note that the attackers are reusing known exploits (such as CVE-2015-5119 or CVE-2013-1331), but changing the delivery method; or leveraging obfuscation, encoding, encryption, or multiple layers of packing to disguise their malicious scripts or backdoors. Using the Google Sheets V4 API from VBA to integrate Sheets and Excel. Excel makro obfuscation found at excel-pratique. In this post, I want to talk about and show off a code execution method which was shown to me a little while back. It converts numbers like 347 into strings like “yr8”, or array of numbers like [27, 986] into “3kTMd”. open the file. ninja) 317 PHP is the VBA of the web: it's ugly but too useful to ignore. Dedicated apps for music, TV, and podcasts. Obfu-VBA; Also, please correct me if I'm wrong but from my understanding the simplified logic of a obfuscator is: Scramble the VBA code by using a defined logic (change X to Y) The tool creates a new workbook where the VBA code is all scrambled, but everything else remains the same. June 29, 2017 ~ R3MRUM Over the past year-or-so, there seems to have been an uptick of miscreants password protecting the malicious office documents that they send to their target victims. You should assign obfuscation settings for your assembly in Skater interface first. NET assemblies. Once you have opened the macro editor (Visual Basic IDE), simply go: File -> Import File -> c:\path\to\cmd. > That's basically Rubberduck telling the user it's out of sync. Revoke-Obfuscation is a framework that transforms evasion into a treacherous deceit. About VBA Macros See this article for more information and technical details about VBA Macros and how they are stored in MS Office documents. Obfuscation can be used to evade the existing endpoint. See the complete profile on LinkedIn and discover Ryan’s. The latest Tweets from Hegusung (@hegusung) Search query Search Twitter. por José Eduardo Chamon categoria de Base de Dados Livro Edição 3 set 2014 Baixar Livro EXCEL VBA I por José Eduardo Chamon em PDF EPUB Gratis Portugues ou Ler Online. MimikatzDefense │ │ ├───Mimikatz_obfuscator │ │ ├───MorphedMimiKatzFromMetame. Unfortunately this protection is limited and can be bypassed by an aware user. Find answers to PHP obfuscator from the expert community at Experts Exchange. argformats - refinery. This is one of my favorite boxes on HTB. While there has been a variety of ways in which they have been used, one of the more prevalent is through the use of macros. frame Furthermore, the module documentation of refinery. Obfuscator has already been used 355970 times!. 23 HIGH - GitHub: Electron Protocol Handler Remote Code Execution Vulnerability (CVE-2018-1000006) (0x45d3fa00) 24 INFO - HTTP: Invalid Flow Detected (0x40211000) 25 MEDIUM - HTTP: Microsoft IE OBJECT Tag Buffer Overflow (0x40219000). 3 Apache Nutch™ - 0. The mission of the Python Software Foundation is to promote, protect, and advance the Python programming language, and to support and facilitate the growth of a diverse and international community of Python programmers. Nov 29, 2017 · Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. It provides Java libraries and GUI tools for generation and validation of license files and license keys. Reverse sha512 lookup, decrypt and search. The HTML Blink Element () is a non-standard element which causes the enclosed text to flash slowly. Hashids is a small open-source library that generates short, unique, non-sequential ids from numbers. In the case of PowerShell, because it is a scripting language, we can simply take the stub code and use it as a template for our final payload, replace the relevant sections with the encrypted payload and the key and write it as the output to a new. Also there are some more features. The goal of macro_pack is to simplify antimalware solutions bypass and automatize the process from vba generation to final Office document generation. It allows you to access every long term support (LTS) version of node. Exe Obfuscator Github. Left pane should accept the unobfuscated code and right pane should generate the obfuscated/scrambled VBA code. pst) File Format Copyright © 2020 Microsoft Corporation. SQLrat is a clever piece of malware which is dropped onto the compromised machine using a malicious Word Document. Programming Microsoft Access with VBA can be a lot easier if you know the keyboard shortcuts for the most common commands and tasks and the most common bits of code that you’ll use in the editor and immediate windows as you build and debug your Access application. (Citation: GitHub Mimikittenz July 2016) After acquiring credentials from web browsers, adversaries may attempt to recycle the credentials across different systems and/or accounts in order to expand access. After using it I was able to fully De-Obfuscate it and see my code Even though it's not free, I tried Spices. Malware Statistics 4. have table request consists of 3 columns client_id, level_3m , credit_limit output(for example) should using above information. Nowadays one of the most frequent cybersecurity threat comes from Malicious (office) document shipped over eMail or Instant Messaging. 4 GitHub Repository One of the most simplistic ways to get past Windows Defender is to roll your own shell code loader.

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# Kinetic energy to thermal energy: how to convert, when, where, examples and facts

This post gives you a detailed explanation of how, when, and where kinetic energy is converted to thermal energy.

Kinetic energy is the energy by its motion, and thermal energy is the energy haunted by the system due to the gesture of speck within the system. A match existence bang opposed to the winger converts kinetic energy to thermal energy in the form of heat, which illuminates the match.

## How is kinetic energy converted to thermal energy?

The total energy in the system is always conserved. The total energy can convert from one form to another. When the force of friction acts on the object in the system frequently, some kinetic energy is converted to thermal energy because of friction.

Consider a simple system with a ramp and block, and a block has three-four different materials on it, each side with different roughness. Because of that different roughness, they have different friction coefficients, which means that the frictional force acting on them is different.

So we put sandpaper side on the ramp, and we have to set the block on the ramp and give it a shove; it comes to a stop, so when we gave it a shove, the block had kinetic energy for second energy with motion now it’s stopped.

The force of friction worked on the block over the distance that it took for the block to come to a stop and that work equals the amount of kinetic energy into thermal energy.

## When kinetic energy is converted to thermal energy?

If we have a box containing the gases, the particles moving within the box create kinetic energy. Then the particles snapback or rebound erratically backward and forward at elevated velocity to generate thermal energy. Thus the kinetic energy of gases within the box is converted to thermal energy.

An example of converting kinetic energy into thermal energy is if we unhand a water balloon underneath to the floor, creating kinetic energy and the amalgamate descending movement of all the atom is spin to arbitrarily by bang with the earth create heat in the form of thermal energy.

As the ball plummets in the direction of the floor, its gravitational potential energy transfigures into kinetic energy. The ball’s kinetic energy will pursue augment as it attains impetus; as late as it eventually collapses with the facet when the ball bangs, the kinetic energy is converted mostly to thermal energy.

## Where kinetic energy is converted to thermal energy?

The penguin moves towards another place in the water through an ice cube. The penguin gains kinetic energy because of its movement. The amount of energy conveyed from the fizzy drink molecules to the water molecules in the ice cubes requires heat and thermal energy.

When the penguin slides across the ice penguin acquires kinetic energy. There must be some amount of friction between the penguin and the ice. The penguin would presumably retain gliding forever. There must be air resistance causing the penguin to slow down. When two surfaces rub together, some of that kinetic energy of stirring will get transformed into thermal energy.

The conversion of kinetic energy to thermal energy happens when an entity’s temperature expands, and its atom’s median kinetic energy enlarges. When the median kinetic energy of its atom enlarges, the gadget’s thermal energy increases; consequently, the thermal energy of an entity increases as its temperature increases.

## Kinetic energy to thermal energy formula ?

The formula to convert kinetic energy (E=1/2mv^2) to thermal energy (Q=m.c.ΔT) is

$\frac{1}{2}mv^{2}= mc\Delta T$

Where m is the mass of an object, v is the speed of an object, m is the mass of substance, c is the specific heat, and ΔT is the temperature change.

## Kinetic energy to thermal energy generator ?

The classic nuclear fission reactor utilizes the kinetic energy of the neutrons that upshot through chain reaction to heat water which is nothing but thermal energy that wreak vapor and steer a generator that fabricates electricity.

The chain reaction happens in a nuclear reactor; a chain reaction is a procedure at which point neutrons let go in fission to construct supplementary fission in not less than one more distant nucleus. Such a nucleus in the steer generates neutrons, and the procedure performs again.

The nuclear fission energy is set free as kinetic energy of the fission amount and segments. As electrostatic radiation in the appearance of gamma rays in a nuclear reactor, the kinetic energy is transferred to heat in the form of thermal energy as the dribble and gamma rays conflict with the molecules that trump up the reactor and liquid.

## Kinetic energy to thermal energy efficiency ?

Kinetic energy is converted (K.E) to heat in the form of thermal energy (T.E) is a hundred percent effective because heat is the outcome of all configurations of ineffectiveness.

According to the mathematical formula of efficiency,

Efficiency=$\frac{Eout}{Ein}\times 100%$

Here About is the output energy, thermal energy, and Ein is the kinetic input energy.

Therefore,

Efficiency= T.E/K.E×100%

## 21 examples of kinetic energy to thermal energy with detailed facts

This post gives you a detailed explanation about kinetic energy to thermal energy examples with their illustration are stated below:

## Pressure cooker

As the temperature expands, gas molecules in the pressure cooker budge rapidly acquire kinetic energy and pressure inwards. The cooker is also expanded, then the water is heated, which is in the form of thermal energy. After some time, stew into steam then food is cooked.

## Car engine

During car driving, as the temperature of the engine increases, the molecules that formulate the car budge with substantial kinetic energy, making the car engine can overheat it is because the cooling system is inaccurate. Heat in thermal energy cannot run off the heating chamber.

## Steam engine

When the liquid water pivot to steam, the dribble budges quickly or slothful. The dribble in the steam has approximately kinetic energy employed on the constraining of steam-heated to high thrust generates the thermal energy.

## Train moving on the track

When a train is delayed or approaching a stop, the train will expand its motor and start working in contrary, producing kinetic energy and the train’s tracks due to heat generation, which is nothing but thermal energy. It happens because trains are built from steel.

## Rubbing of hands

When we rub our hands in conjunction, the gesture of scratching the exterior of our skin backward and forward in opposition to each other conviction the molecules in our skin to pass a bit of speedy acquirkinetic energy. The quicker that molecules pass, the elevated the temperature. So the friction of rubbing our hands simultaneously generates heat which is nothing but thermal energy.

## Nuclear reactor

A nuclear reactor consists of reactance, moderators, condensers, and coolant. When the slow-moving neutron bombarded with nuclear reactor nuclear reaction takes place, there will be a nuclear decay that the products are spread out by kinetic energy when the products are different units then lot of heat (thermal) energy is released.

## Incandescent bulb

As the electrons move, the kinetic energy is generated, and they bang into the alloy particle of the filament. The energy of every collision quivers the particles and heats them, which is thermal energy that generates light.

## Electrical heater

A poignant electric charge creates electrical energy called an electron. The rapid-moving charges acquire the kinetic energy, and when current passing via the resistor in the heater will transfer to heat energy.

## Solar panels

Solar energy is kinetic energy because when the cosmic rays are excited, the atoms getting vibrating the luminosity from the sun heats the panel in the form of thermal energy.

## A car braking

When we apply the car brake by putting friction to the operating wedge of a system, the friction force withstands movement acquiring kinetic energy and converting it to heat, which is nothing but thermal energy.

## A meteor strike

Meteors proceed at a fast-paced and possess a huge amount of kinetic energy, and a meteor condenses air preceding it. The air heats in succession, heating the meteor.

## Pump up a bike tire

While pumping up a bike tire, the temperature get-larger hence the kinetic energy also get-larger so the momentum of the air molecules in the tire gets larger, which will increase the extent of crash per second with the wall of the tire this aggregate greater force consequently compulsion on the tire-wall producing heat.

## Human body movements

The muscular structure of the human body system almighty causes movement, which is the kinetic energy and nourishes standpoint and produces heat in the body. It’s nothing but thermal energy.

## Rubbing of two stones

When two stones are rubbed with each other, there is a flow of negative charges by electron creates kinetic energy attributable to friction producing thermal energy gives spark.

## Matchstick rubbing on the surface of matchbox

When we rub the matchstick head to the matchbox surface, kinetic energy is generated due to the friction created by rubbing activity, then transformed into heat, which is nothing but thermal energy.

## Melting ice

As the ice melts into water, kinetic energy exists in the atoms, and heat energy is produced and absorbed.

## Boling of water

Boiling-water-commute-into vapor-pressure because when the temperature increases, kinetic energy also increases, resulting in an increase in pressure and capacity within a commanding volume; this is an activator of heat energy.

## Force applied to the objects

When-we-applied-force-on-objects-the-temperature-increases-resulting-in-atom-and-the-molecules-to-budge-sprightly acquired kinetic energy and bombarded together hence the objects-are-heated it is nothing but thermal energy.

## Stirring

Lift-a-glass-rod-in-the-solution-and-stir-the-solution-rapidly-it-acquiring-a-kinetic-energy-genearate-the-glass-rod-heat-up-in-the-system it is nothing but thermal energy.

## Flowing of gas

If-the-gases-are-cramped-in-a-vessel-via-which-they-flow-creates-kinetic-energy-then-there-will-be-friction-of-the-flowing-gas-on-the-barrier-of-the-vessel-which-will-produce-heat it is thermal energy.

## Water ball falling from some height

When the water ball falls from some height to the ground, its kinetic energy collides with the floor, transforming heat it’s thermal energy.

## Vibration of molecules

A huge amount of kinetic energy is stored in the vibration of molecules, and the molecules vibrating rapidly-produce heat, which is nothing but thermal energy.

Megha BR

Hi, I am Megha B R, I have completed my Post-Graduation in Solid State Physics and pursuing B. Ed. I am a Physics enthusiast. As an Academic writer, my goal is to reach the readers in a simplified manner through my articles.


text:
# How do you find the derivative of y=(3x)( x + 2)?

Aug 4, 2015

I found: $y ' = 6 \left(x + 1\right)$
$y = f \cdot g$
$y ' = f ' g + f g '$
$y ' = 3 \left(x + 2\right) + 3 x \cdot 1 = 3 x + 6 + 3 x = 6 \left(x + 1\right)$


text:
Definitions

# Improper integral

In calculus, an improper integral is the limit of a definite integral as an endpoint of the interval of integration approaches either a specified real number or ∞ or −∞ or, in some cases, as both endpoints approach limits.

Specifically, an improper integral is a limit of the form

$lim_\left\{btoinfty\right\} int_a^bf\left(x\right), dx, qquad lim_\left\{ato -infty\right\} int_a^bf\left(x\right), dx,$
or of the form
$lim_\left\{cto b^-\right\} int_a^cf\left(x\right), dx,quad$
lim_{cto a^+} int_c^bf(x), dx, in which one takes a limit in one or the other (or sometimes both) endpoints . Improper integrals may also occur at an interior point of the domain of integration, or at multiple such points.

It is often necessary to use indefinite integrals in order to compute a value for integrals which may not exist in the conventional sense (as a Riemann integral, for instance) because of a singularity in the function, or an infinite endpoint of the domain of integration.

## Examples

The following integral does not exist as a Riemann integral
$int_1^infty frac\left\{1\right\}\left\{x^2\right\},dx$
because the domain of integration is unbounded. (The Riemann integral is only well-defined over a bounded domain.) However, it may be assigned a value as an improper integral by interpreting it instead as a limit
$lim_\left\{btoinfty\right\}int_1^bfrac\left\{1\right\}\left\{x^2\right\},dx=lim_\left\{btoinfty\right\}left\left[-frac\left\{1\right\}\left\{b\right\}+frac\left\{1\right\}\left\{1\right\}right\right] = 1$

The following integral also fails to exist as a Riemann integral:

$int_0^1 frac\left\{1\right\}\left\{sqrt\left\{x\right\}\right\},dx.$
Here the function is unbounded, and the Riemann integral is not well-defined for unbounded functions. However, if the integral is instead understood as the limit:
$lim_\left\{ato 0^+\right\}int_a^1frac\left\{1\right\}\left\{sqrt\left\{x\right\}\right\}, dx = lim_\left\{ato 0^+\right\}left\left[2sqrt\left\{1\right\}-2sqrt\left\{a\right\}right\right]=2,$
then the limit converges.

## Identities

$int_\left\{-infty\right\}^\left\{infty\right\} f\left(x\right) , dx = int_\left\{-infty\right\}^\left\{infty\right\} f\left(x - 1/x\right) , dx$

## Convergence of the integral

An improper integral converges if the limit defining it exists. Thus for example one says that the improper integral
$lim_\left\{ttoinfty\right\} int_a^t f\left(x\right), dx$
exists and is equal to L if the integrals under the limit exist for all sufficiently large t, and the value of the limit is equal to L.

It is also possible for an improper integral to diverge to infinity. In that case, one may assign the value of ∞ (or −∞) to the integral. For instance

$lim_\left\{btoinfty\right\}int_1^b frac\left\{1\right\}\left\{x\right\},dx = infty.$
However, other improper integrals may simply diverge in no particular direction, such as
$lim_\left\{btoinfty\right\}int_1^b xsin x, dx,$
which does not exist, even as an extended real number.

A limitation of the technique of improper integration is that the limit must be taken with respect to one endpoint at a time. Thus, for instance, an improper integral of the form

$int_\left\{-infty\right\}^infty f\left(x\right), dx$
is defined by taking two separate limits; to wit
$int_\left\{-infty\right\}^infty f\left(x\right), dx = lim_\left\{ato -infty\right\}lim_\left\{bto infty\right\} int_a^bf\left(x\right),dx,$
provided the double limit is finite. By the properties of the integral, this can also be written as a pair of distinct improper integrals of the first kind:
$lim_\left\{ato -infty\right\}int_a^cf\left(x\right), dx + lim_\left\{bto infty\right\} int_c^bf\left(x\right),dx$
where c is any convenient point at which to start the integration.

It is sometimes possible to define improper integrals where both endpoints are infinite, such as the Gaussian integral $int_\left\{-infty\right\}^infty e^\left\{-x^2\right\},dx = sqrt\left\{pi\right\}$. But one cannot even define other integrals of this kind unambiguously, such as $int_\left\{-infty\right\}^infty x,dx$, since the double limit diverges:

$lim_\left\{ato -infty\right\}int_a^cx,dx+lim_\left\{btoinfty\right\}int_c^bx,dx$
In this case, one can however define an improper integral in the sense of Cauchy principal value:
$p.v.int_\left\{-infty\right\}^infty x,dx=lim_\left\{btoinfty\right\}int_\left\{-b\right\}^bx,dx = 0.$

The questions one must address in determining an improper integral are:

• Does the limit exist?
• Can the limit be computed?

The first question is an issue of mathematical analysis. The second one can be addressed by calculus techniques, but also in some cases by contour integration, Fourier transforms and other more advanced methods.

## Types of integrals

There is more than one theory of mathematical integration. From the point of view of calculus, the Riemann integral theory is usually assumed as the default theory. In using improper integrals, it can matter which integration theory is in play.

• For the Darboux integral, improper integration is necessary both for unbounded intervals (since one cannot divide the interval into finitely many subintervals of finite length) and for unbounded functions with finite integral (since, supposing it is unbounded above, then the upper integral will be infinite, but the lower integral will be finite).
• The Riemann integral, improper integration is also necessary for unbounded intervals and for unbounded functions, as with the Darboux integral.
• The Lebesgue integral deals differently with unbounded domains and unbounded functions, so that often an integral which only exists as an improper Riemann integral will exist as a (proper) Lebesgue integral, such as $int_1^infty frac\left\{1\right\}\left\{x^2\right\},dx$. On the other hand, there are also integrals that have an improper Riemann integral do not have a (proper) Lebesgue integral, such as $int_0^infty frac\left\{sin x\right\}\left\{x\right\},dx$. The Lebesgue theory does not see this as a deficiency: from the point of view of measure theory, $int_0^infty frac\left\{sin x\right\}\left\{x\right\},dx = infty - infty$ and cannot be defined satisfactorily. In some situations, however, it may be convenient to employ improper Lebesgue integrals as is the case, for instance, when defining the Cauchy principal value.
• For the Henstock-Kurzweil integral, improper integration is not necessary, and this is seen as a strength of the theory: it encompasses all Lebesgue integrable and improper Riemann integrable functions.

## Improper Riemann integrals and Lebesgue integrals

In some cases, the integral

$int_a^c f\left(x\right),dx,$

can be defined as an integral (a Lebesgue integral, for instance) without reference to the limit

$lim_\left\{bto c^-\right\}int_a^b f\left(x\right),dx,$

but cannot otherwise be conveniently computed. This often happens when the function f being integrated from a to c has a vertical asymptote at c, or if c = ∞ (see Figures 1 and 2). In such cases, the improper Riemann integral allows one to calculate the Lebesgue integral of the function. Specifically, the following theorem holds :

• If a function f is Riemann integrable on [a,b] for every b ≥ a, and the partial integrals

$int_a^b|f\left(x\right)|,dx$
are bounded as b → ∞, then the improper Riemann integrals
$int_a^infty f\left(x\right), dx,quadmbox\left\{and\right\} int_a^infty |f\left(x\right)|, dx$
both exist. Furthermore, f is Lebesgue integrable on [a, ∞), and its Lebesgue integral is equal to its improper Riemann integral.

For example, the integral

$int_0^inftyfrac\left\{dx\right\}\left\{1+x^2\right\}$
can be interpreted alternatively as the improper integral
$lim_\left\{btoinfty\right\}int_0^bfrac\left\{dx\right\}\left\{1+x^2\right\}=lim_\left\{btoinfty\right\}arctan\left\{b\right\}=frac\left\{pi\right\}\left\{2\right\},$
or it may be interpreted instead as a Lebesgue integral over the set (0, ∞). Since both of these kinds of integral agree, one is free to choose the first method to calculate the value of the integral, even if one ultimately wishes to regard it as a Lebesgue integral. Thus improper integrals are clearly useful tools for obtaining the actual values of integrals.

In other cases, however, the integral from a to c is not even defined, because the integrals of the positive and negative parts of f(xdx from a to c are both infinite, but nonetheless the limit may exist. Such cases are "properly improper" integrals, i.e. their values cannot be defined except as such limits. For example,

$int_0^inftyfrac\left\{sin\left(x\right)\right\}\left\{x\right\},dx$

cannot be interpreted as a Lebesgue integral, since

$int_0^inftyleft|frac\left\{sin\left(x\right)\right\}\left\{x\right\}right|,dx=infty.$

This is therefore a "properly" improper integral, whose value is given by

$int_0^inftyfrac\left\{sin\left(x\right)\right\}\left\{x\right\},dx=lim_\left\{brightarrowinfty\right\}int_0^bfrac\left\{sin\left(x\right)\right\}\left\{x\right\},dx=frac\left\{pi\right\}\left\{2\right\}.$

## Singularities

One can speak of the singularities of an improper integral, meaning those points of the extended real number line at which limits are used.

Such an integral is often written symbolically just like a standard definite integral, perhaps with infinity as a limit of integration. But that conceals the limiting process. By using the more advanced Lebesgue integral, rather than the Riemann integral, one can in some cases bypass this requirement, but if one simply wants to evaluate the limit to a definite answer, that technical fix may not necessarily help. It is more or less essential in the theoretical treatment for the Fourier transform, with pervasive use of integrals over the whole real line.

## Cauchy principal value

Consider the difference in values of two limits:

$lim_\left\{arightarrow 0+\right\}left\left(int_\left\{-1\right\}^\left\{-a\right\}frac\left\{dx\right\}\left\{x\right\}+int_a^1frac\left\{dx\right\}\left\{x\right\}right\right)=0,$

$lim_\left\{arightarrow 0+\right\}left\left(int_\left\{-1\right\}^\left\{-a\right\}frac\left\{dx\right\}\left\{x\right\}+int_\left\{2a\right\}^1frac\left\{dx\right\}\left\{x\right\}right\right)=-ln 2.$

The former is the Cauchy principal value of the otherwise ill-defined expression

$int_\left\{-1\right\}^1frac\left\{dx\right\}\left\{x\right\}\left\{ \right\}$
left(mbox{which} mbox{gives} -infty+inftyright).

Similarly, we have

$lim_\left\{arightarrowinfty\right\}int_\left\{-a\right\}^afrac\left\{2x,dx\right\}\left\{x^2+1\right\}=0,$

but

$lim_\left\{arightarrowinfty\right\}int_\left\{-2a\right\}^afrac\left\{2x,dx\right\}\left\{x^2+1\right\}=-ln 4.$

The former is the principal value of the otherwise ill-defined expression

$int_\left\{-infty\right\}^inftyfrac\left\{2x,dx\right\}\left\{x^2+1\right\}\left\{ \right\}$
left(mbox{which} mbox{gives} -infty+inftyright).

All of the above limits are cases of the indeterminate form ∞ − ∞.

These pathologies do not affect "Lebesgue-integrable" functions, that is, functions the integrals of whose absolute values are finite.

## Summability

An indefinite integral may diverge in the sense that the limit defining it may not exist. In this case, there are more sophisticated definitions of the limit which can produce a convergent value for the improper integral. These are called summability methods.

One summability method, popular in Fourier analysis, is that of Cesàro summation. The integral

$int_0^infty f\left(x\right),dx$

is Cesàro summable (C, α) if

$lim_\left\{lambdatoinfty\right\}int_0^lambdaleft\left(1-frac\left\{x\right\}\left\{lambda\right\}right\right)^alpha f\left(x\right), dx$

exists and is finite . The value of this limit, should it exist, is the (C, α) sum of the integral.

An integral is (C, 0) summability precisely when it exists as an improper integral. However, there are integrals which are (C, α) summable for α > 0 which fail to converge as improper integrals (in the sense of Riemann or Lebesgue). One example is the integral

$int_0^inftysin x, dx$

which fails to exist as an improper integral, but is (C,α) summable for every α > 0, with value 1. This is an integral version of Grandi's series.

• .
• .
• .


text:
# Greedy algorithm for making change in C

Making change for a canonical coin system is one of the simplest greedy algorithms, and one with which everyone is familiar. The algorithm is simply:

1. Start with a list of coin values to use (the system), and the target value
2. Find the largest coin that we can use
3. Use as many of it as we can, subtracting their value from the total
4. Stop when the remaining total is 0

Here is what it looks like in C:

unsigned int make_change(unsigned int *system, unsigned int *solution, size_t n,
unsigned int amount)
{
unsigned int coin;
int remaining = amount;

coin = 0;

/* Main loop */
while (remaining > 0 && coin < n) {
/* Find out if we can use this coin */
if (remaining >= system[coin]) {
/* Use as many of this coin as we can */
solution[coin] = remaining / system[coin];
remaining = remaining % system[coin];
}
/* Move to next coin */
coin++;
}
if (remaining > 0) {
/* This means the coin system is not sensible */
return 0;
}
return 1;
}

An example program:

#include <stdio.h>
#include <stdlib.h>

void print_solution(const unsigned int *system, const unsigned int *coins, size_t n, FILE *fout)
{
unsigned int coin;
/* Print the number of each coin type used */
for (coin = 0; coin < n; coin++) {
if (coins[coin]) {
fprintf(fout, "%d x %d\n", coins[coin], system[coin]);
}
}
}

int main(void)
{
unsigned int system[] = {200, 100, 50, 20, 10, 5, 2, 1};
const size_t n = sizeof(system) / sizeof(unsigned int);

unsigned int *coins = calloc(n, sizeof(unsigned int));
const unsigned int amount = 1741;
unsigned int result = make_change(system, coins, n, amount);
if (result) {
print_solution(system, coins, n, stdout);
}
else {
printf("No solution!\n");
}
free(coins);
return 0;
}

Output:

8 x 200
1 x 100
2 x 20
1 x 1


text:
# 20130126 の変更点

Top / 20130126

* Hakata Workshop 2013 [#z008da3b]
''～ Combinatrics and its Applications～''

#br
This is a satellite seminar of [[the 11th Japan-Korea Workshop on Algebra and Combinatorics :http://comb.math.kyushu-u.ac.jp/?20130124]].
Our purpose of this meeting is giving an opportunity to make a speech and
to commuticate with reserchers who study verious fields not only Combinatorics.

Further information is available from the organizers below.

**Organizers [#xb11a6e1]

-[[Yoshihiro Mizoguchi:http://imi.kyushu-u.ac.jp/~ym/]] (Kyushu University),~
-Hayato Waki (Kyushu University),~
-Mitsugu Hirasaka (Pusan National University),~
-[[Tetsuji Taniguchi:http://researchmap.jp/tetsuzit-14/]] (Matsue College of Technology),~
-Osamu Shimabukuro (Sojo University)
-[[Laboratory of Advanced Software in Mathematics, Institute of Mathematics for Industry, Kyushu University:http://www.imi.kyushu-u.ac.jp/eng/academic_staffs/department/34]]

**Supported by [#l7bc435b]

-[[Global COE Program "Education and Research Hub for Mathematics-for-Industry":http://gcoe-mi.jp/]]

**Date [#i35500dd]
-January 26, 2013. 9:30-18:00

-Seminar Room I (2F) in Reference Eki Higashi Building.
1-16-14 Hakata-Eki-Higashi, Hakata-Ku, Fukuoka City, 812-0013

**Program [#h6d29d6d]
***January 26 (Saturday) at Room I in Reference Eki Higashi Building. [#s883cdcb]
-9:25--9:30 Opening (Tetsuji Taniguchi)
-9:30--10:05 [[Akihiro Munemasa (Tohoku University)>#pa19cf13]]
--Complex Hadamard matrices contained in a Bose-Mesner algebra
-10:20--10:55 [[Michael Dobbins (GAIA, Postech)>#ze9edc62]]
--Reducing combinatorial to projective equivalence in realizability problems for polytopes.
-11:10--11:45 [[Aleksandar Jurišić (University of Ljubljana)>#q728cf69]]
--TOWER GRAPHS AND EXTENDED GENERALIZED QUADRANGLES
-12:00--13:00 break
-13:00--15:00  Poster Session
--[[List of Speakers>#cfb76d77]]
-15:15--16:15 [[Xiao-Dong Zhang (Shanghai Jiao Tong University)>#wec50930]]
--The algebraic connectivity of graphs
-16:30--17:05 [[Katsuhiro Ota (Keio University)>#mb37f86c]]
--Clique minors, chromatic numbers for degree sequences
-17:10--17:45 [[Yota Otachi (JAIST)>#h17d65f1]]
--The path-distance-width of hypercubes
-17:45--18:00 Closing (Yoshihiro Mizoguchi)
-18:00-- Post-meeting party

**List of Poster session speakers [#cfb76d77]
*** 「[[数学ソフトウェア紹介:http://imi.kyushu-u.ac.jp/~waki/lams/]]」([[Introduction to Mathematical Software:http://imi.kyushu-u.ac.jp/~waki/lams/]]) [#pee66f42]
+久保 浩平(九州大学理学部物理学科), プログラム名: 正規圧縮距離を用いたクラスタリング
+島袋 修(崇城大学 工学部), プログラム名: フュージョンスキームの探索
+野崎 寛(愛知教育大学), プログラム名: Magmaによる極大2距離集合の分類(Classification of maximal 2-distance sets by  Magma)
+松下昂平(九州大学大学院数理学府), プログラム名: アフィン写像を用いた補間による2次元アニメーション作成ソフトウェア
+鹿間 章宏(大阪大学大学院 情報科学研究科), プログラム名: トーリックイデアルの二次生成判定法
+照本 直敏(九州大学数理学府), プログラム名: Q-det
+喜友名 朝也(九州大学大学院数理学府), プログラム名: PARI/GPによるE_8 lattice の部分集合の生成
+谷口哲至(松江高専数理科学科), プログラム名: スターコンプリメントテクニックと最小固有値が－２以上のグラフの生成
+ダハン グザヴィエ(ＧＣＯＥ-ＭＩ), プログラム名: MAGMAによるRamanujan graphチェッカー
+古川 貴司(九州大学大学院数理学府), プログラム名: SSD Problem
+高妻倫太郎(立命館アジア太平洋大学), プログラム名: Truffe（トリュフ）
+秦攀(九州大学 マス・フォア・インダストリ研究所), プログラム名: 非線形時系列に対するモデル推定と選択のソフト

**Abstract [#sb7c7865]

***Akihiro Munemasa (Tohoku University) [#pa19cf13]
-Title:Complex Hadamard matrices contained in a Bose-Mesner algebra
-Abstract:

A complex Hadamard matrix &mimetex(H); is an n by n matrix with complex entries
with absolute value 1, such that rows are pairwise orthogonal
with respect to the hermitian inner product. Recently,
the adjacency matrix of the line graph of the Petersen graph.
We found another such matrix, and then generalized
it to an infinite family. In this talk, we focus on how to
set up a system of polynomial equations for solving this kind
of problem more efficiently than the naive approach. This is
achieved by determining the ideal of the 3-dimensional
algebraic variety consisting of the points of the form
&mimetex("(x+1/x,y+1/y,z+1/z,x/y+y/x,y/z+z/y,z/x+x/z)");
in the 6-dimensional space.
This is a joint work with Takuya Ikuta.

***Michael Dobbins (GAIA, Postech) [#ze9edc62]
-Title:Reducing combinatorial to projective equivalence in realizability problems for polytopes.
-Abstract:

Determining if there is a polytope of any combinatorial type that
satisfies some given property is made difficult by the fact that there
are polytopes with realization spaces that are homotopic to any
primary semialgebraic set. I will show how, for certain properties,
this can be reduced to finding such realizations among projective
equivalence classes of polytopes, which are much nicer spaces. An
application of this answers a question posed by Bernt Lindström in
1971, that there does exist a polytope without an antiprism.

***Aleksandar Jurišić (University of Ljubljana) [#q728cf69]
-Title:TOWER GRAPHS AND EXTENDED GENERALIZED QUADRANGLES
-Abstract:

Let &mimetex(\Gamma); be a complete multipartite graph with at least two parts
and each part of size at least &mimetex(2);. For example, &mimetex("K_{t\times n}");,i.e., the complement of &mimetex(t); copies of &mimetex(K_n);, and &mimetex("t,n \ge 2");. Then the local graphs and the &mimetex(\mu);-graphs (that is the graphs induced on the common neighbours of two vertices at distance &mimetex(2);) are again complete multipartite. They are actually the same graphs, in our example &mimetex("K_{(t-1)\times n}");. If &mimetex("t\ge 3");, then the geodesic closure ofany &mimetex(\mu);-graph is the graph we started with.
Let now &mimetex(\Gamma); be the point graph of a generalized quadrangle GQ&mimetex("(s,t)");. Then &mimetex(\Gamma); is strongly regular like the complete multipartite graph (its valency is &mimetex(s(t+1));, while the number of triangles on an edge in (a) &mimetex(\Gamma); is &mimetex(s-1);, and (b) the complement of &mimetex(\Gamma); is &mimetex(t+1);). Its &mimetex(\mu);-graphs are &mimetex("K_{1\times (t+1)}"); and when the generalized quadrangle is regular, the convex closures of &mimetex(\mu);-graphs are &mimetex("K_{2\times (t+1)}");.
We study a family of graphs, denoted by &mimetex({\cal F});, with the following
properties

(i) their &mimetex(\mu);-graphs are complete multipartite,

(ii) there exist adjacent vertices &mimetex(x);, &mimetex(y); and a vertex &mimetex(z); at distance &mimetex(2); from both &mimetex(x);, &mimetex(y); in &mimetex(\Gamma);, and the number &mimetex("\alpha_\G=\alpha(x,y,z)");of common neighbours of these vertices does not depend on a choice of such a triple.

This is a generalization of the study of extended generalized quadrangles
in it is intimately connected with even more general study of locally
strongly regular graphs.
We report on our progress of the classification of the family &mimetex({\cal F});.

***Xiao-Dong Zhang (Shanghai Jiao Tong University) [#wec50930]
-Title:[[The algebraic connectivity of graphs:http://comb.math.kyushu-u.ac.jp/?plugin=attach&pcmd=open&file=Xiao-Dong_Zhang.pdf&refer=20130126]]
-Abstract:

Let &mimetex(G); be a simple graph of order &mimetex(n); and
&mimetex( L(G)=D(G)-A(G) ); be its Laplacian matrix, where &mimetex( D(G)); and &mimetex( A(G) ); are the degree diagonal  and adjacency matrices, respectively.
The the second smallest  eigenvalue of &mimetex( L(G) ); is called the algebraic connectivity of &mimetex(G.);
In this talk, we survey some new results and progress on the algebraic connectivity.
In particular, we present some relationships between the algebraic
connectivity and the graph parameters, such as the   clique number,
the matching number, the independence number, the isoperimetric
number, etc.

***Katsuhiro Ota (Keio University) [#mb37f86c]
-Title:Clique minors, chromatic numbers for degree sequences
-Title:[[Clique minors, chromatic numbers for degree sequences:http://comb.math.kyushu-u.ac.jp/?plugin=attach&pcmd=open&file=Ota.pdf&refer=20130126]]
-Abstract:

For a given graph &mimetex(G);, let &mimetex(\chi(G)); and &mimetex(h(G)); denote
the chromatic number, and the maximum size of clique minors of &mimetex(G);,
respectively.
The well-known Hadwiger's conjecture (1943) states that
&mimetex(\chi(G)\le h(G)); holds for every graph &mimetex(G);, which is wide open
for the graphs with &mimetex(\chi(G)\ge 7);.
In 2005, Robertson posed the "Hadwiger's conjecture for degree sequences."
For a graphical degree sequence &mimetex(D);, let &mimetex(\chi(D)); and &mimetex(h(D));
denote the maximum &mimetex(\chi(G)); and &mimetex(h(G));, respectively,
among the graphs &mimetex(G); having degree sequence &mimetex(D);.
Robertson's conjecture states that &mimetex(\chi(D)\le h(D)); for any degree
sequence &mimetex(D);.
This conjecture was recently confirmed by Dvořák and Mohar
by showing strongly that &mimetex(\chi(D)\le h'(D));, where
&mimetex(h'(D)); is the maximum size of topological clique minors of graphs
having degree sequence &mimetex(D);.
In this talk, we give an alternative and very short proof of
Robertson's conjecture.
Also, we shall discuss the values of &mimetex(\chi(D));, &mimetex(h(D)); and &mimetex(h'(D));
for some &mimetex(D);.
These results are based on a joint work with Guantao Chen and Ryo Hazama.

***Yota Otachi (JAIST) [#h17d65f1]
-Title: The path-distance-width of hypercubes
-Title: [[The path-distance-width of hypercubes:http://comb.math.kyushu-u.ac.jp/?plugin=attach&pcmd=open&file=Otachi.pdf&refer=20130126]]
-Abstract:

The path-distance-width of a connected graph &mimetex(G); is the minimum
integer &mimetex(w); satisfying
that there is a nonempty subset of &mimetex(S \subseteq V(G)); such that the
number of the vertices
with distance &mimetex(i); from &mimetex(S); is at most &mimetex(w); for any nonnegative integer &mimetex(i);.
We present a general lower bound on the path-distance-width of graph,
and determine the path-distance-width of hypercubes by using the lower bound.
We also discuss the applicability of the lower bound to other graphs.


text:
# Chapter 2 - Equations, Inequalities, and Problem Solving - 2.7 Solving Applications with Inequalities - 2.7 Exercise Set - Page 140: 22

$x\leq 12,500$ dollars

#### Work Step by Step

Let the cost of production be $x$. The cost of the production of the software cannot exceed 12,500 dollars can be translated as: $x$ is less than or equal to 12,500. $x\leq 12,500$ dollars

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