Modeling Wind Turbine Towers and Modal Analysis Assessment
This is a master thesis project which demonstrates the implementation of a design tool for onshore wind turbine towers. The master thesis is performed in collaboration with the Fraunhofer Institute for Wind Energy and Energy System Technology (IWES). The idea is to provide the engineer / user with a product that gives the flexibility to define various types of tower models from coarse to more detailed. Each model describes the tower in a different type of discretization and redundant information is avoided. The type of tower model that is used depends on the kind of analysis that the user wants to proceed. The key concept is to design the tower once, and then generate simulatable code for every solver. Because this is an ongoing project very limited information will be provided here.
In the beginning, in order to obtain the global loads, the whole wind turbine is analysed as a system. To extract these global loads, a coupled aero-elastic simulation is needed. Simulating wind turbine response in time, using Finite Element Methods, is computationally intensive. Time simulations are therefore generally made using beam elements to reduce the system’s degrees of freedom. Consequently, a beam tower model is implemented that is used in this step. The output of this simulation are global loads in time series acting on the wind turbine components caused by external forces (wind, electricity grid, waves). These loads are contained and linked to the beam model. After this stage, various types of analysis can take place (buckling, fatigue) using a more complicated tower model.
Tower modeling approach
For the description of a wind turbine tower different levels of complexity exist. In the most fundamental stage, the tower can be seen as a tubular shaped geometrical object with a height, a base taper angle, and a base diameter. By increasing the hierarchy of the tower model one has to consider segments and a variation in thickness and diameter along the amplitude of the tower. This variation of diameter and thickness inside each segment can be approximated as linear. In the most detailed model, the description of tower include the segments, a more accurate capture of the variation of structural properties, bolted joints, door, ladder, coating, e.t.c.
This approach of splitting the complexity of the tower into various models is significant and useful in the object oriented software development of such models but also in the simulation stage when a specific kind of analysis is required (dynamic analysis, stability analysis, modal analysis).
First, it obeys the idea of object oriented programming and all the advantages that are followed by this, such as reuse of the software, maintenance and modification of the code. Second, these tower models can be combined with other components of the wind turbine such as blades, nacelle, rotor, to form a wind turbine system. Hence, at the end various wind turbine systems exist and each one of them represents the same physical structure in different level of detail. What level of complexity is going to be used, depends on the type of analysis that is intended to be done. For instance, the results of an modal analysis won’t be so different if the door is modeled, but this is not true in the case of a buckling analysis.
Moreover, the graphical user interface for the design of the tower and in general for the wind turbine system is based on these tower models and it has the form of a wizard which assists the user with a sequence of dialogue boxes. Tasks that are complex, both in the analysis phase(modal analysis, buckling analysis, fatigue) or in the design phase (creating tower models) are much easier to perform and less error prone.
The vibration of the tower
One of the primary considerations of a tower is its overall stiffness. The towers are categorized with respect to its natural frequencies in the following way:
- Soft – Soft Tower: The natural frequency of the tower is below both the rotor frequency and the blade passing frequency.
- Soft – Stiff Tower: The natural frequency of the tower is between the blade passing frequency and the rotor frequency.
- Stiff- Stiff Tower: The natural frequency of the tower is above the blade passing frequency. The main advantage to this type of tower is that it is not so sensitive to the motions of the turbine itself. However, it is heavy and therefore costly.
Comprehensive analysis of tower natural frequencies is done with the finite element methods.
Some Modeling Concepts
- Discretization of tower with Bernoulli space beam elements (three displacements and three rotations per node)
- Linear interpolation of wall thickness and diameter along the height of the tower
- Concentrated masses such as flanges modeled as tip masses in the respected nodes
- Rotor nacelle sub-assembly as rigid body
Validation of Natural Frequencies and Mode Shapes
The results of the implemented modal analysis tool (OWTModal) are compared with two major programs that are widely used in the industry; BModes and Adams.
Tower without Tip Mass
Tower with Tip Mass


By the end of 2022, fully electric ComfortDelGro taxis and private electric vehicles (EVs) could very well be fast charging at EV charging stations located on premises powered by solar power harnessed from rooftop solar panels.
Our second joint venture with ENGIE South East Asia – ComfortDelGro ENGIE Solar Pte Ltd – which targets to operate by second half of 2022 once it obtains customary regulatory approvals, intends to install and operate rooftop solar panels atop three of our buildings at Loyang, Pandan and Ubi for a start. Apart from these buildings, our automotive workshops will also run on Renewable Energy deployed from these rooftop solar panels. Our Solar JV also plans to offer Renewable Energy solutions to our customers and business partners that are looking to deploy Renewable Energy to their own buildings.
The Solar JV comes just two months after our first venture, ComfortDelGro ENGIE Pte Ltd, had successfully won the tender to deploy 479 EV chargers across the island of Singapore by the third quarter of 2022.
Stay tuned to follow our journey towards carbon neutrality.


Watts and lumens just don't tell the story of how well a grow light will perform.
PAR (photosynthetic active radiation) is the best measurement of how well a grow light will perform. Happy Leaf LED lights are tested with a li-cor quantum meter to determine the par reading. Both the V1 and V2 of lights read at over 200 micromoles per square meter per second at 12" from the light source. The Happy Leaf V2 optimized grow rail provides 470 micromoles per second per square meter at 6" below the light.
The wave lengths of Happy Leaf LED lights are optimized at 450 blue and 660 red nanometers, the ideal wavelengths for chlorophyl A and B absorption.
If you would like to understand the full specification and use of LED grow lights, we highly recommend the following reading:
"The LED Grow Book: Better. Easier. Less Watts."
Christopher H. Sloper
"Commercial Greenhouse Production, Measuring Daily Light Integral in a Greenhouse"
Ariana P. Torres, Robert G. Lopez "Department of Horticulture and Landscape Architecture" Purdue University


Technology is developing at a breakneck pace. This applies to every area of our lives, including health. We will talk about this today in more detail. To date, there are wonderful devices called Pulsgurte.
What it is?
Chest heart rate monitors are devices that are worn on the body and help monitor our pulse. Such a device is more reliable and accurate, but less comfortable, since it must be on the chest during the measurement.
The principle of operation is based on fixing the electrical activity of the heart. This is the most accurate way to date. It is well known to those who have done electrocardiography of the heart.
Another feature of the device is that it captures the pulse and transmits the value to a compatible device. It can be a sports or smart watch, a smartphone, a bike computer, an exercise machine in a fitness center, and so on. From the screens of these devices, you can monitor the pulse and control its value.
What you need to know when choosing?
As you know, today there are a huge number of devices for measuring heart rate. Therefore, when choosing, you should look at a number of characteristics.
These include the goals that you set for yourself, the type of sport you plan to do, the intensity of training and the technical features of the devices.
The heart is the most important organ in our body. Therefore, it is better to control it by well-understood brands with a good reputation. In this case, you can promise guaranteed accuracy and durability of the device. Recognized leaders, or have their own laboratories to improve the technology of fixing the heart rate. Or use the technology of direct competitors.
There are three groups of heart rate belts: one wirelessly connects to a smartphone or PC, and the other uses a combination of two sensors that communicate with each other. In this case, it uses a device on the wrist – be it a sports watch or a fitness band – that provides a wireless connection to a chest strap. The third group is able to connect to both smartphones and PCs, as well as fitness bracelets and watches. Communication with peripheral devices is carried out using a Bluetooth or ANT + channel.
Can they be used during sports?
When you are engaged in vigorous activities, it is also very important to control your heart rate. Even if you use small machines like steppers. If you want to know more about these machines, then you can view die besten 5 Steppbretter im Vergleich.


Laser micromachining cluster TOOLAS and Optogama are kindly inviting you to the event on laser micromachining applications.
DATE: June 1, 2021
TIME: 09:00-11:00 CEST / 10:00-12:00 EEST
PLACE: Zoom platform
The event is dedicated to advanced laser micromachining solutions, technologies, insights and applications for sensors and micro medical devices. The purpose of this event is to catalyze cross-sectorial applications and new product development. The event is designed for manufacturers of medical devices and equipment, manufacturers of analytical equipment and others interested.
Detailed program (speakers and topics) and registration is here. Please register by May 30th 2021, to receive the Zoom link to the event. Registered participants will be sent a link to the on-line event the day before the event. The event is free of charge.


DDoS protection is included with all of our hosting plans.
A DDoS attack aims to render a server, service or an infrastructure unavailable by overloading the server's bandwidth or monopolizing its resources to the point of depletion.
All of our hosting plans, in any location, include free 1000+ Gbps protection against DDoS attacks.
To protect your servers and services from attacks, our upstream networks feature a mitigation solution based on VAC technology - an exclusive combination of techniques to:
- Analyze all packets at high speed in real time
- Vacuum your server's incoming traffic
- Mitigate, i.e. singling out all the illegitimate IP packets, while allowing legitimate ones to pass through
Our DDoS protection is powered by equipment from the following vendors and providers:
Leader in network technologies, Cisco offers increasingly intelligent and reactive solutions to reduce risks and respond to datacentre security requirements - even the most demanding ones.
Tilera is a world leader in multicore processing. This computing power is put to the service of network intelligence, analysis and processing the flows in datacentres.
Arbor solutions offer full protection and simplified network management on all interconnected environments. They provide a bigger and better overview, actionnable information and proven protection, ensuring that network threats are detected and neutralised. Availibility of the network is thus guaranteed.
To detect the attack, we use the netflow sent by the routers and analysed by the Arbor Peakflow boxes. Each router sends a summary of 1/2000 of the traffic that is actually passing through it. The Arbor Peakflow boxes analyse this and compare it to the attack signatures. If the comparison is positive, mitigation is activated within seconds.
The signatures analyzed are based on traffic thresholds of "packets per second" (pps, Kpps, Mpps, Gpps) or "bits per second" (bps, Kbps, Mbps, Gbps) on certain packet types, such as:
Thanks to the 3 Tbps network of our upstream networks, the infrastructure can absorb a huge quantity of traffic during attacks, which is far superior to the other DDoS protected services available.
Click here to see our DDoS protected hosting plans


Parklio™ solutions make your parking secure and connected. With one click, you can control your parking place, share it with others, and optimize overall occupancy. Experience the new parking future with Parklio™ – smart parking for everyone. Spima are now represent Parklio for Cyprus and you can contact us for enquiries.
Smart Parking Barrier
Parklio™ Parking Barrier is a smartphone-controlled parking barrier that protects the parking space from unauthorized usage while providing reliable control and efficient parking management. Compared to the traditional parking barriers, it offers many innovative features and possibilities, including automation.
Smart boom gate
Parklio is a manufacturer of parking products and solutions from Europe. Our smart parking boom gate barrier is an automatic gate barrier controlled via smartphone and it is used for guarding car parks, entrances, restricted areas, checkpoints, or any other kind of exit/entry point, controlling road traffic in both directions.
App Controlled Parking Bollard
This high-quality hydraulic security bollard will guarantee the safety and it represents an ideal solution for entrance with high-security requirements. With an intensive operative cycle, Parklio™ Bollard is designed to withstand high car flows thus economically and efficiently securing parking places in just a few seconds.
Turn any existing product into a smart one!
Parklio™ Brain enables control of the existing parking solutions, garage doors, high speed doors etch, with a smartphone. By integrating the module, it will be possible to benefit from all the advantages of smart Parklio™ solutions - control via a free smartphone App, key sharing options, real-time information, user-friendly parking management interface, and the possibility of integration with any other information system.
Placed in the middle of the Parklio™ universe, Parklio™ Gateway enables remote control of the Parklio™ products. It serves as a bridge between the Parklio™ products and the end-user. Besides coordinating and managing all the data communication between the products, Parklio™ Gateway provides real-time parking occupancy information.
Parking Management System
Parklio™ Parking Management System (PMS) enables reliable control and management of parking lots and Parklio™ smart parking products through a user-friendly interface. Parklio™ PMS is the most advanced parking management system on the market for optimizing parking lot occupancy while providing real-time information about product state, position, and other features.
Automatic Number Plate Recognition
Parklio™ Automatic Number Plate Recognition (ANPR) camera captures vehicle images and recognizes license plate numbers on moving vehicles thus enabling automatic entrance or exit on any physical parking protection product, whether it is a parking barrier or a boom gate. Parklio™ ANPR system is mainly used with automatic gate barrier and enables smart detection of vehicle licenses and ensures automatic access for authorized users.


The ProTrolley Ultra electric golf trolley hosts a range of new and dynamic features. This superbly engineered trolley combines the latest lightweight and super strength materials with a powerful 180 watt motor. The trolley is built with reliability in mind, with the ultra strong oval frame providing a very strong base for a quality electric golf trolley. It is very stable, easy to manoeuvre and folds in a no-fuss quick lock movement, allowing it to fit into the smallest of car boots.
Key Features of Ultra electric golf trolley :
USB Charging port
Fixed Battery connector
The 33Ah battery that is supplied with the ultra electric golf trolley 33 is of the highest quality supplied by Leoch, it comes with a 1 yr warranty on the battery and charger. The battery is fully sealed, safe and accepted on airlines. This size of battery should be suitable for 27+ holes on most course but please seek our advice if you wish to use it for more than this.
This golf trolley now features a new control panel with a responsive speed controller and a choice of speeds (0-9). For us at ProTrolley the reliability of your trolley is of the utmost importance, we have engineered this trolley from the component parts upwards to bring you a golf trolley that will meet your expectations.
With its superb construction and modern design, the new Ultra golf trolley boasts sturdy aluminium alloy frame, with an oval shaped section for extra stability, the handle has been designed for both left and right-handed golfers.
The new battery tray is now a sleek ABS moulding and accommodates all currently available batteries. The batteries plug straight into the connector fixed into the tray, there are no flying leads to find and wrestle with.
It features a new handle that allows for easy movement of the trolley, a choice of 9 speeds, a soft touch standby switch (cruise control) and a separate Digital Distance Function (DDF) button, with each function being accessed directly from the front panel.
The Ultra electric golf trolley comes standard with Pneumatic sports wheels, which are easily removable. The trolley is enabled to accept hedgehog winter wheels, which are easily changeable from the wheels originally supplied. (The wheels can be purchased from us directly as an accessory)
Battery for Ultra Electric Golf Trolley
The Ultra electric golf trolley is available in 5 models: no battery,20Ah, 26Ah, 33Ah and Lithium batteries. Whether you are a serious or occasional golfer, the golf trolley has been designed and engineered to suit your game and your pocket.
The battery supplied with the complete trolley sets, is a high quality, ultra deep cycle battery, suitable for a range of duties, from 18 holes with the 20Ah model to 36 holes with the larger versions. The battery is maintenance free, fully sealed and airline approved.


Internet - VTVnet
VTVnet is a total new Internet service in Vietnam Cable Television network, with highest-speed access, superior technology compared to conventional forms of internet and low service fee, meeting the demand for both connection and online entertainment.
VTVnet uses entirely new technology CMTS following EURO standard DOCSIS 3.0. CMTS technology has a very fast speed of data upload and download (max 40 / 40Mbps), much higher than the current ADSL (8Mbps / 768Kbps).
CMTS technology allows VTVnet’s platform bandwidth to expand the maximum in order to cater for value-added services such as IP Cameras, Video Conference, Smart Building technology, Smart Home Technology, altogether heading towards a fully digitized future for the family and the office. Thanks to sharing cable television infrastructure, monthly charge of VTVnet shall be minimized, saving considerable monthly cost for customers. The installation of VTVnet is very quick and convenient as no more new cable is required, which does not affect the urban landscape.
The cooperation between Vietnam Cable Television - with the strength of the technical infrastructure, leading the coverage (over 54 provinces, more than 2 million pay-TV subscribers), stable signal quality, diverse content and CMC Telecom with special strengths in telecommunications services, information technology towards multi-service integration marks an important step in the strategic development of both sides. This is the convergence of telecommunications television - the inevitable trend of the modern pay TV.
Thus, only one signal line, customers both can watch cable TV, HD TV and use high-speed internet access, integrating many other value-added services. With comprehensive utility, no doubt that VTVnet can fully meet the demand of customers for entertainment and online information updates.
Currently, VTVnet will provide for customers in Hanoi and expand to other provinces in the near future. On the occasion of opening, VTVnet introduces to customers service packages with preferential fees and completely free charge of installation and equipment.


Data Cable Installations in a Home Office
Do it yourself data cable installations in your office is labor intensive. The tradeoffs are that your data will be 100% secure and you will have fast speeds.
At the time this article is being written, 100 mega bits per second (mbps) is the most common speed and its cost is very reasonable. Hard wired cables can not be hacked and this keeps your data secure.
Wireless is typically 54 mbps. It is quite a bit slower than wired. My neighbors all around me have wireless networks and I see all of them. Some of them are secured, but most of them are not. Click on the drawing below to see a simple drawing of data wiring.
Most people balk or have reservations about fishing wires up or down walls in their home. If there is access above or access below where you want the cable to go, the process is actually pretty easy.
The first step is to determine exactly where the computer/device is to be placed. The only constraints are distance. Limit the cable run to 330 feet(100 meters) OR less.
Another problem with do it yourself data cable installations is interference. Stay away from large motors, electrical cables running to the stove, HVAC unit and florescent lights. These devices tend to induce noise into the cable that interferes with the data. Usually the data will still run because the hardware will auto-negotiate a slower speed. Stay away from these things if at all possible or cross these cables at a 90 degree angle with the data cable.
The Correct Way to Run Cables
For Data Cable Installations
The correct way to run cables is to install wall outlet jacks and connect with wires to these jacks. This gives a clean look and adds reliability. Use solid wires. If the solid wires in the cable do not move, they will not break. The wire should be standard CAT5e SOLID copper wire. The label on the box will say ANSI/EIA/TIA 568 24/4 Pair. The real importance to you is that the wire has passed many standards test and will work in a standard application.
This wire is available at your local big box for around $50 to $70 per box for 1000 feet. While you are there, get the jacks you will need and some adapter mounting brackets to place the jacks in.
You will also need a 3 or 4 foot long drill bit for your data cable installations. In the picture below, notice the hole near the end of the drill bit. This is where you attach the wire so you pull the wire back into the location of the jack that is to be installed. The big box also sells these.
The wire that is used from the wall jacks to the computer is called a stranded wire jumper cable? It is a non-solid wire that can bend, flex and will not break. It comes with connectors already attached. Stranded wire should be used in areas where the wire can move. It is a cable that runs from the wall jack to the computer and from the wall jack to the data communications equipment.
A note of caution here: Just because you can buy cable with connectors already in place, it does not mean it is stranded cable. The big boxes make solid wire available conveniently in lengths of 25, 50 or even 100 foot spools with connectors already installed. This cable will fail if you move the wire just a little. These broken wires are a major headache to find. This is why a cable tester is on our list of tools.
Now We Are Ready to Start
Take a stud finder and determine that the wall space you have selected is not blocked by anything and that there are no horizontal boards inside the wall. These horizontal boards or fire stops as they are called can be a real bummer to get around.
Lookout for electrical wiring, telephone, cable TV, pipes, etc. during you data cable installations. Cut a hole in the drywall where the jack is to be mounted. You should be able to see the wood at the floor level if you are trying to get to the crawl space? You should be able to get all the way to the ceiling if you are trying to get to the attic?
If so, then take the drill bit and carefully drill the hole. Leave the drill bit in the hole and then find the drill bit in the space you drilled into on the other side. It may be into the crawl space or the attic.
Attach the wire and pull into the hole where the outlet is going. Do the same at the other end of where this cable is to go. Now the wire is in place end to end.
Wire the jacks to conform to EIA 568B standards. The instructions to do this will be packed with the jacks.
To the left is a picture of a typical data jack. The placement of the wires in this jack is critical for correct operation.
During your data cable installations, do not untwist the wire in the cable. This is very important. The twist reduces cross cable interference. This specific jack has 110 terminals/connectors and although a specific tool should be used to connect these wires to the jack, the wire cover strip works sufficiently to connect the wires.
Below is a picture showing the twist. Click on the picture to see it more clearly.


Products tagged with 'electronic gimbal stabiliser'
Display per page
For Camera with lens up to 3.2kg
For Mirrorless Camera or DSLR Camera with lens up to 3.2kg
Nebula 5100 Tactical Expansion Pack Mobile Version (Side grip with smartphone cage and wrist strap)
Nebula 5100 Tactical Expansion Pack Monitor Version (Side grip with tactical arm and wrist strap)
Nebula Riser Rail (For Canon C100, C200, C300 Series, Canon 1dx Series and Sony FS5 Cameras)
Zhiyun Crane 2 Gimbal Stabilizer (For Camera up to 3.2kg)


When the $3 million renovation of the University of Florida Training Reactor is complete, all that will remain from the original 53-year-old reactor will be the concrete and graphite blocks
When the $3 million renovation of the University of Florida Training Reactor is complete, all that will remain from the original 53-year-old reactor will be the concrete and graphite blocks surrounding the reactor's core, said James Baciak, the newly appointed director of the university's nuclear engineering program.
The renovations have been going on for years, as part of a relicensing process, he said, but they are finally getting to the stage where they can bring the reactor back online after seven years.
"It was supposed to have been done awhile ago, but a lot of research reactors just get extensions," Baciak said.
The reactor is expected to come back online either by the end of this year or early 2015, Baciak said. When it is running again, it'll be the first reactor in the U.S. — research or commercial — to be controlled with modern digital electronics.
"It will be a test bed for innovations in reactor management, making the next generation of reactors safer and more efficient," Baciak said.
The 100-kilowatt reactor at UF was built in 1959 under President Eisenhower's Atoms for Peace program along with dozens of other university research reactors. It currently is one of 28 university-based research reactors in the country, according to the Nuclear Regulatory Commission.
It was last online in 2007 after it had its fuel swapped out from high-grade uranium to low-grade uranium under a program by the National Nuclear Security Administration to downgrade fuel at research reactors amid fears that such material could fall into the hands of terrorists.
The fuel swap followed an expose by ABC News that showed security breaches and questioned protocols at university research reactors across the country, including at UF.
At the time, UF officials said the conversion was unrelated to the ABC report. Federal funding had been secured for the conversion in 2005.
The program ran into a huge setback in 2009 when its director at the time, Samim Anghaie, and his wife were charged with siphoning off millions of dollars in grant money for their own use. They were convicted in 2011 of submitting falsified documents to the U.S. Air Force and NASA to obtain contracts.
Baciak was a professor in the program from 2004 to 2010, went to work for the National Security Directorate at Pacific Northwest National Laboratory in Richland, Washington, for two years, and returned to UF in 2012.
During his time at UF, Baciak has secured more than $8.2 million in project grant funding from federal agencies, national labs and industrial partners, including the Departments of Defense, Energy, Homeland Security and the Nuclear Regulatory Commission.
Baciak, 39, is the leader of a core group of faculty who want to expand the nuclear engineering program and restore it to its former top 10 pre-eminence.
Facility Director Kelly Jordan, 34, is one of the youngest professors to run a research reactor and win an R&D 100 award for his research. He is supervising the reactor renovations.
Another one of their core faculty, Andreas Enqvist, is 32.
The team also includes Sedat Goluoglu and Yong Yang.
The program's core strengths are in materials, reactor physics, detection and security, Baciak said. He wants to hire more faculty under UF's pre-eminence initiative where there is a growing demand in the field of materials innovation.
The reactor is used to produce neutrons that are used in research projects. Researchers can insert instruments and materials inside the reactor core through neutron beam ports to see how they degrade under neutron flux, Baciak said.
"We can establish the life expectancy of these materials in commercial reactor settings," he said, which then enables researchers to develop safer and more efficient materials.
The reactor can also be used for teaching reactor operations and controls, ultimately enabling UF to produce the next generation of reactor operators.
The demand for newly trained reactor operators is growing as the current generation, which got their training in the Nuclear Navy program, ages out, Baciak said.
"Ultimately our hope is it will attract federal funding for other research," he said of the reactor.
Baciak spends a lot of his time traveling around the country securing money for projects. Those projects create a pipeline of scientists and engineers to go on to work in labs to do applied research and development.
Faculty from other UF colleges also use the reactor, he said. The College of Medicine, for instance, examines radiation's effects on tissue samples, something Jordan recently worked on involving lung tissue.
And it's used in radiation detection and imagery research, which has national security applications, Baciak said.
"Dirty bombs is a perfect example," he said. UF's research can help federal agents detect someone smuggling materials across borders or through ports of entry, he said.
There also is a push to start retraining radiochemists, Baciak said. "We would like to be able to do that," he said.
Radiochemists work in the field of nuclear forensics, using nuclear material to determine the precise location where something came from by measuring its signature, he said. They can measure when it is safe to return to a former nuclear site that has been greenfielded.
Access to the reactor is restricted and monitored. One enters through a door with a security keypad as security cameras record each coming and going.
Visitors step into the control room, with its analog dials and readouts. Beyond the control room is a large room several stories high with a concrete bunker occupying the center. Inside the bunker is the two-foot by three-foot reactor, too small to actually power anything on campus.
All the ductwork, piping, heating and air conditioning, electrical and mechanical gear is replaced. But the core itself is unchanged.
"You don't build a new research reactor today," Jordan said. It's too expensive, especially with all the regulations in place.
A new reactor would cost $40 million to $100 million, he said.
UF has spent $2.5 million so far, and will have spent $3 million when the upgrades are done.
Jordan and Baciak are excited to be at the threshold of a new era in nuclear engineering.
When they got their bachelor's degrees, few people were interested in nuclear engineering. Baciak said he was the only nuclear engineering graduate in his class in 1998, and Jordan said he was one of five in his graduating class of 2001.
But the federal government has offered initiatives for students to enroll in nuclear engineering programs. Last year, UF's nuclear engineering program graduated 26 undergrads, gave out a few master's degrees and conferred four Ph.Ds.
Jordan — a self-avowed nerd — said he started out wanting to study microbiology, but took a few nuclear engineering classes and found out he was good at it. And he enjoyed it.
Today, he gets to work with cool gadgets, like a prototype neutron detector developed by colleagues of his in Zurich, Switzerland, that looks like a "Star Wars" stormtrooper blaster.
And he gets to operate an accelerator-based neutron generator — a machine the size of a Smart Car in its own concrete-lined room that produces neutrons that can then be used to measure the effects of radiation on people.
They are looking forward to having the reactor back online, though, so students can see for themselves that book learning put to action.
"It is amazing how tangible it is to see the look in their eyes when their understanding of what they have read comes through in their head," Jordan said. "All the theory becomes real."


HAShCache: Heterogeneity Aware Shared DRAMCache for Integrated Heterogeneous Systems (IHS)
Integrated Heterogeneous System (IHS) processors pack throughput oriented GPGPUs alongside latency oriented CPUs on the same die sharing certain resources, e.g., shared last level cache, network-on-chip (NoC), and the main memory. The demands for memory accesses and other shared resources from GPU cores can exceed that of CPU cores by 2 to 3 orders of magnitude. This disparity poses significant problems in exploiting the full potential of these architectures.
In this paper, we propose adding a large capacity stacked DRAM, used as a shared last level cache, for the IHS processors. However, adding the DRAMCache naively, leaves significant performance on the table due to the disparate demands from CPU and GPU cores for DRAMCache and memory accesses. In particular, the imbalance can significantly reduce the performance benefits that the CPU cores would have otherwise enjoyed with the introduction of the DRAMCache, necessitating a heterogeneity aware management of this shared resource for improved performance.
In this paper, we propose three simple techniques to enhance the performance of CPU application while ensuring very little to no performance impact to the GPU. Specifically, we propose (i) PrIS, a prioritization scheme for scheduling CPU requests at the DRAMCache controller (ii) ByE, a selective and temporal bypassing scheme for CPU requests at the DRAMCache (iii) Chaining, an occupancy controlling mechanism for GPU lines in the DRAMCache through pseudo-associativity.
The resulting cache, HAShCache, is heterogeneity-aware and can adapt dynamically to address the inherent disparity of demands in an IHS architecture. Experimental evaluation of the proposed HAShCache results in an average system performance improvement of 41% over a naive DRAMCache and over 200% improvement over a baseline system with no stacked DRAMCache
- Computer Architecure
- Intergrated CPU+GPU arch
- 3D Die Stacked DRAMCache
- gem5-gpu, gem5, gpgpu-sim
- Research Paper
- EECS 2017 Best Poster
- ACM TACO
- HiPEAC 2018


INCOSE MBSE Challenge Team for Modeling & Simulation Interoperability (MSI)
Initiated in Summer 2007, this project is developing and demonstrating techniques for advanced model-based systems engineering (MBSE) in particular and model-based X1 (MBX) in general. This work is part of the Modeling & Simulation Interoperability Team in the INCOSE MBSE Challenge. Representative application domains include mechatronics, other cyber-physical systems, and beyond.
Experiences and lessons learned are emerging from an excavator testbed that interconnects simulation models with associated diverse system models, design models, and manufacturing models. Our method employs SysML as the primary technology to achieve multi-level multi-fidelity interoperability, while at the same time leveraging conventional modeling & simulation tools including mechanical CAD, factory CAD, spreadsheets, math solvers, finite element analysis (FEA), discrete event solvers, and optimization tools.
This work has been sponsored to date by several organizations including Deere and Lockheed Martin, and we welcome additional collaboration.
Primary Overview Publications - Phase 1
Primary Overview Publications - Phase 2
See our SysML Focus Area for other publications.


I graduated from the University of Dhaka, Bangladesh with a Bachelors of Science in Robotics and Mechatronics Engineering
My research interest lies at the intersection of computer vision, machine learning, deep reinforcement learning and control systems. Moreover, I would like to see their applications in solving real life problems with field robotics.
I am currently employed as a research assistant at Department of Robotics and Mechatronics Engineering, University of Dhaka. In my free time I try to solve people’s coding problem on StackOverFlow.
BSc in Robotics and Mechatronics Engineering, 2018-2022
University of Dhaka, Bangladesh
Precision Agriculture and Food Safety (Funded by the Ministry of Science & Technology, Bangladesh)
Landslide susceptibility mapping and flood vulnerability analysis
Autonomous robot navigation (Final year project)
AI driven Autism Detection
Landslide susceptibility mapping and prediction using satellite imagery involve the integration of various geospatial and environmental data to assess the likelihood of landslides in a particular area. We are developing AI driven methods to enable autonomous execution of landslide susceptibilty mapping in the hilly regions of Bangladesh
Detecting and counting seedlings density and growth captured from UAVs/drones images for crop health monitoring, yield prediction
Our deep learning pipeline utilizes advanced image processing and deep learning techniques to accurately identify and quantify stomatal characteristics from microscopic images of leaf surfaces. By applying this pipeline to both control and drought stress conditions, the study sheds light on the variations in stomatal density, size, and distribution. The findings from this study have implications for crop resilience and agricultural practices in the face of changing climate conditions and water scarcity for the native plants of Bangladesh.


Telecom International Myanmar Co., Ltd
on 20 October, 2020
This position is under Technical Department and direct report to Technical Director.
- Participate in building information security policies for systems, applications, network and end user computers.
- Implementing policies, regulations and guidelines of information security for systems, applications, network, processes and end user computers.
- Checking and monitoring the implementation of information security policies. Report irregularities and suggest solutions to fix
- Planning to review and detect information security vulnerabilities on systems, applications, network, processes and end user computers. Suggest solutions to fix
- Implementing the operations of emergency recovery of information security on systems, applications, network, processes and end user computers.
- Operation of information security systems and applications as AD, Proxy, AntiVirus, NetAD, OneAgent….
- Managing accounts (create, modify, revoke, remove…) on all of systems, applications, devices
- Research and development of new solutions to enhance information security on systems, applications, network, processes and end user computers.
- Graduated from university specialized in IT or telecommunications.
- Background knowledge about information systems, computer engineering.
- Knowledge about server system, computer network, storage system.
- Knowledge about database management.
- Certifications in Networking (CCNA), Security, Server (MCSA, LPI) OS products as advantage.
- Minimum of 2 years of experience working in a corporate IT system engineer position.
- Have knowledge & expertise in Networking (Cisco, Juniper), Server (Windows, Linux), Firewalls (Fortinet, Cisco, Juniper), Databases (Oracle, MySQL, MS SQL).
... Read full article


- The world leader in motorcycle communicators. Connecting riders since 2004. Plug-and-Play Bluetooth Communication System for Solo Riders
- Rider to passenger short range intercom keeps you both connected at all times. Even comes pre-paired if you BUY a set of two.
- Universal pairing to conduct intercom conversations with non-cardo headsets
- WATERPROOF and dustproof, Bluetooth 4.1, 13 hour talk time, interchangeable boom and corded microphone options offset offset, self-adjusting volume, built-in FM radio.
Release Date: 06-11-2019
Details: The scala rider FREECOM 4 communication system represents the cutting edge of conference intercom Bluetooth headsets. Slim design and easy-to-use flat panel interface coupled with powerful technology makes for a seemless experience that simply does what it promises to do. Conduct intercom conversations between up to 4 riders, even with non-Cardo headsets • Try out the new FM sharing experience between 2 riders even when riding far apart • Share a joint riding experience with your passenger while listening to the same music streaming from an A2DP device • Connect to a mobile phone to make or receive calls or simply stay on track with GPS instructions. The FREECOM 4 is both waterproof and dustproof (IP67), suitable for riding in all weather conditions. The new 40 mm ultra-thin HD stereo speakers guarantee the sound is crystal-clear, further improved by AGC technology with automatic volume adjustment according to background noises. Voice activation of incoming calls hands-free (VOX) insures your safety while on the road. With Parallel Audio Streaming, keep up the intercom conversation without forsaking important GPS instructions and continue listening to music or the radio in the background. Full remote control ability and easy customization of settings with the Cardo Connect App for iOS and Android phones. The Cardo Community online platform offers users software upgrades and additional options for configuring your device settings from the comfort of home.
Package Dimensions: 8.6 x 4.5 x 4.4 inches


Domain controllers and member servers are obviously critical to security log monitoring but there are many things you can only track by monitoring end-user workstation security logs.
In this real-training (tm) webinar I will explain why the Windows network architecture makes workstation security log monitoring so important. I'll show you why you need to monitor workstation logs if knowing what your users are doing is really important.
Remember, insider threats account for more security related losses than external intruders. As always I will paint the big picture and then reveal specific event IDs you should look for to track end-user activity such as program execution, software installation and the only way to accurately determine when a user logged off their workstation.
But there’s also a critical need to monitor activity associated with USB devices and removable storage. In this webinar I’ll show you what the security log and other resources on XP and Vista computers are capable of and where you’re left high and dry.
Watch this webinar to learn how workstation security logs fill important gaps in your overall network monitoring strategy.


Congratulations on your purchase of this GE-branded Universal Remote Control. This remote is capable of operating thousands of audio/video devices including TVs, Blu-ray™/DVD players, streaming media players, sound bars, cable receivers and more! SAVE THIS MANUAL AND … Relax and enjoy your nights spent inside with a GE universal remote control. You’ll no longer need to worry about keeping track of multiple controllers - the remote is designed to control up to 8 separate devices, including your TV, DVD player, cable, satellite, sound bar, streaming media players and more. This jumbo universal remote control is suitable for use with a wide range of devices such as your TV, VCR, DVD, TV/DVD combo, TV/VCR combo, satellite, cable and more. With a jumbo design for easy identification of buttons, this universal remote is compatible with … The remote for my Sceptre TV went bad so I replaced it with a GE universal remote from Amazon. 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GE Device Universal Remote Control, Black. Consolidate operating equipment by getting the 3-Device Universal Remote Control. This remote control can operate up to 3 devices at a time and offers a code search feature for easy setup. More
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PRINTERS Multifunction Printers, Scanners & Software
HP DesignJet SD Pro Multifunction Printer
Detailed document reproduction
Scan and copy your everyday documents and maps at high speeds without fringing, using the HP DesignJet SD Pro Multifunction Printer and advanced CIS technology. Simplify operation and boost workflow productivity with dual rolls and smart switching.
- Scan and copy everyday documents and maps at high speeds without fringing, using advanced CIS technology.
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USB Port Expander for PS3
Product Name: USB Port Expander for PS3
Product Model: PS3-0051
- Fully compatible with all PS3 consoles equipped with 2 USB ports, including US, EU and Japan versions
- Expand the 2 USB ports of PS3 console to 5 USB ports
- Reflects the stylish design of the Playstation 3 itself, and with sleek black finish similar as Playstation 3.
- Support USB 2.0 version
- LED Status Indicator


What is the TIG Shield Build Series?
If you would like to build your very own TIG Shield then you have come to the right place. The LONG BEACH MAKER SOCIETY is hosting this workshop for individuals interested in learning how to solder, using basic electronics, and creating an LED matrix board with endless possibilities.
We will have various makers guide you through the entire process of making your TIG Shield.
The TIG Build Kit includes:
- 1 custom printed circuit board
- 130 LEDs
- 1 potentiometer
- 1 button
- 1 Arduino Uno clone microcontroller
- 1 battery pack
Check the Events section for time and location.
- Friday, October 3rd – Deadline for Registration and Payment VEC 524.
- Saturday, October 4th – First BUILD Day (Soldering)
The registration has reached critical mass and therefore has closed.


Cloud Infrastructure Training
Cloud and data center virtualization demands stronger networks – are you ready?
Cloud and data center virtualization brings the potential to deliver dramatic savings in terms of server count, footprint, and storage requirements for data centers. For all these advantages though, virtualization also brings some unique challenges:
- There will be fewer servers but each one will be more critical than ever.
- Applications can be dynamically reallocated at will but the support infrastructure cannot do the same.
- Server virtualization puts new demands on storage environments and data protection processes.
As operational requirements and newer technology adoption has escalated within the data center, it is critical that related IT training be available to support successful business continuity. Having in-depth expertise in Cisco, VMware, and NetApp technologies, Fast Lane is in a unique position to be able to offer a portfolio of training courses that cover your data center and virtualization training requirements.
Cloud, Virtualization & Data Center Training for Cisco, NetApp & VMware
NetApp, Cisco, and VMware have partnered to create a unique multi-tenant infrastructure that includes all server, storage, and networking hardware and software to facilitate sharing, reuse, and dynamic resource allocation. This infrastructure minimizes the risk of transitioning to a cloud infrastructure while delivering the advanced capabilities you need.
Enterprises today are driven to adopt new ways to reduce costs, increase business agility, and improve data center efficiency. Technology innovations, such as virtualization and cloud computing, allow greater sharing of IT resources and enable them to be deployed as a service. To further the adoption of cloud computing and delivering IT as a service, three industry leaders – NetApp, Cisco, and VMware – teamed up to create the industry’s first end-to-end secure multi-tenant architecture. Leading, proven technology from each vendor has been designed, tested, and validated in a documented reference architecture that enables enterprises to securely share, reuse, and dynamically allocate resources.
- FlexPod for VMware Essentials (FPVE)
- FlexPod for VMware Administration (FPVA)
- FlexPod for VMware Design and Implementation (FPVI)
- VXI/VDI for Account Managers (VXAM)
- VXI/VDI for System Engineers (VXSE)
- Implementing Virtualization Experience Infrastructure & Virtual Desktop Infrastructure (VXDI)
- FlexPod for Account Managers (FPAM)


The U.S. National Ice Core Laboratory (NICL) is a National Science Foundation (NSF) facility for storing, curating, and studying meteoric ice cores recovered from the glaciated regions of the world. NICL provides scientists with the capability to conduct examinations and measurements on ice cores, and it preserves the integrity of these ice cores in a long-term repository for future investigations.
Requests for samples from NICL are coordinated through the Science Director. Samples are available to any qualified investigator, but NSF-funded investigators may be given priority to certain core sections. Investigators must contact the Science Director before submitting a proposal to any funding agency at least three weeks before you submit your proposal if you:
(a) plan on requesting samples from the ice core archive at NICL; and/or
(b) plan on collecting a new ice core and would like to store it (even just temporarily) at NICL; and/or
(c) would like to use the NICL facility for core processing or for other lab work.
Please familiarize yourself with the NICL Use and Ice Core Sample Allocation Policy.


Electrical and Electronic Engineering (EEE) is one of the most exciting, creative and challenging areas of engineering. Electrical Engineering deals with the practical and creative applications of electrical engineering, technology and other associated disciplines.
Electrical and Electronic engineers have no doubt been the instruments for the evolution of technology by being able to effectively apply and integrate fundamental concepts and knowledge from various related disciplines. They lead in creating new creative ideas and innovations, and designing and developing new technological or engineering products. Our up to date syllabus and industry relevant undergraduate program prepare the students to take the next step in their career.
At VU in Electrical and Electronic Engineering (EEE) Department a student will not only learn the theory behind engineering but also get training to look at the practical application of that theory in the laboratory as well as in the practical field.
Students study the fundamentals of electrical engineering including electrical circuits, energy conversions, control theory, power systems, & networks; electronic engineering including electronics, microprocessors; communication engineering which includes communication theory, electromagnetic, signal processing and related fields of engineering and computer engineering. Students learn how to design, construct, and test electrical or electronic devices and systems in their own laboratory.


TEC Satellites & Aerials focus on providing professional tv aerial installations with a range of high end digital TV aerials, and DAB Digital Radio Aerials.Read More
TEC Satellites & Aerials engineers are expert installers, and can completely customise each Sky installation, as personally tailored to your needs.Read More
All our engineers are Freesat installation specialists, and can install or repair a Freesat satellite system of your choice.
Freesat requires NO monthly subscription
Freeview equipment can be self-installed (or you can contact us). You connect your digital box to your existing TV and rooftop aerial or just connect the digital TV direct to your aerial.Read More
Specialists in the supply and installation of digital receiver systems for European satellite TV systems, we can adapt the satellite dish to receive TV channels from many countriesRead More


What are the types and trends of artificial intelligence or machine learning emerging or currently in use for the prevention, diagnosis, or treatment of mental health problems and illnesses?
How is artificial intelligence or machine learning being used in the provision of mental health services?
Who are the professional groups and organizations involved in the use or development of artificial intelligence or machine learning for mental health?
There has been an increase in investment, funding, and interest in the use of artificial intelligence (AI) in the mental health area, especially over the past five years. The types of AI in use for mental health problems and illnesses include neural networks, support vector machines, logistic regression, linear discriminant analysis, and random forests.
Currently, the use of AI for mental health is limited in a clinical environment. Consultations revealed that the majority of AI applications are in research and development and have not been expanded to clinical or patient use. The applications of AI in mental health include conversational agents, computerized adaptive testing, diagnosis of mental health conditions, prediction of behaviour, and prediction of prognostic outcomes in treatment.
The professions currently using and researching AI are primarily researchers in the fields of psychology and computer science. There are limited AI applications available commercially, but some AI applications, such as chatbots, are available for the general public through mobile application stores such as Apple and Google Play.
Four key domains of research and development in the use of AI for mental health are diagnosis, prognosis, public health, and clinical administration; most of the identified research is in the area of diagnosis.
Research and development initiatives for mental health diagnosis using AI include the use of biomarkers, neuroimaging, genetics, metabolomic data and proteomic data to diagnose or detect mental illness, and new data collection methods such as smartphone-based data collection or wearable sensors paired with AI applications. Research initiatives for treatment include improvements in currently available chatbots, the creation of new AI chatbots, and research on whether individuals will respond to particular treatments based on their specific characteristics. Prognosis initiatives include predictions of mental health trajectories and potential future costs of illness.
Trends in the development of AI for mental health include chatbots for mental health treatment, increased explainability of models, and an increase in wearable devices and smartphone-based sensors for data collection.
In regard to specific life stages, there are some identified AI algorithms used in children and youth, including Kids’ Help Phone’s crisis text service, Bark’s AI parental control application, and AI algorithms for the diagnosis of internalizing disorders and bipolar disorder. In older adults, there are several AI applications to combat loneliness in seniors using companion robots, and some AI specific to seniors for diagnosing depression.
Policy and program initiatives in mental health–based AI include the translation of lab-based research initiatives into clinical applications. This translation may require careful planning to ensure that ethical standards are met, that assessments are carried out to determine the suitability of the AI for each aspect of mental health diagnosis and treatment, and that generalizable and culturally sensitive algorithms are created
This environmental scan was commissioned by The Mental Health Commission of Canada to address the role of AI in mental health services. This report is a companion to a Rapid Response review on clinical effectiveness and guidelines for AI in mental health [Artificial Intelligence and Machine Learning in Mental Health Services: A Literature Review. Ottawa: Canadian Agency for Drugs and Technology in Health (CADTH), Mental Health Commission of Canada (MHCC); 2021 June.]


The smartphone camera war is shifting to telephoto cameras. The focus is on obtaining high-quality photos even in high-magnification zoom situations.
Most premium smartphones released recently are equipped with three or more cameras. These are the wide-angle camera, which is the main camera mainly used, the ultra-wide-angle camera, which is used for landscape photography, and the telephoto camera, which zooms in and takes pictures of distant objects.
Until now, the battlefield has been the wide-angle camera. Smartphone manufacturers have focused on increasing the sensor size of wide-angle cameras and installing high-pixel resolution of 200 million pixels or more.
However, recently the focus is shifting to telephoto cameras. The area where telephoto cameras shine is in portrait photography. There are two main advantages to taking pictures of people with a telephoto camera. First of all, there is no subject distortion. When taking pictures of people with a wide-angle camera, distortion inevitably occurs because the shooting distance is close. A phenomenon occurs in which the center of the face appears larger than the surrounding area. This is called ‘perspective distortion’, and the shorter the shooting distance, the more severe the perspective distortion becomes.
In contrast, a telephoto camera captures a person from a distance, so distortion is much less and the person’s original form can be captured. Another advantage of a telephoto camera is that you can achieve an ‘outfocusing’ effect, which blurs the area around the person as the메이저사이트 focal distance increases.
With the introduction of a separate shooting function called ‘portrait mode’ in smartphone cameras, interest in taking portraits has increased, and the number of cases of capturing people with telephoto cameras is increasing accordingly.
This leads to a trend of smartphone companies strengthening telephoto camera specifications. Apple equipped the recently released iPhone 15 Pro Max with 5x optical zoom for the first time. A ‘tetraprism’ structure is applied that reflects the light entering the lens four times. As light travels a longer distance in the same space, a longer focal length is secured to capture distant subjects clearly. Apple reportedly plans to expand 5x optical zoom to all iPhone 16 Pro models next year.
Samsung Electronics is also planning to make changes to the telephoto camera of the Galaxy S24 Ultra. IT tipster Ice Universe predicted that the Galaxy S24 telephoto camera will come in two types: 10 million pixels with 3x zoom and 50 million pixels with 5x zoom. Samsung Electronics has been configuring telephoto cameras with ‘3x optical zoom + 10x optical zoom’ from S20 Ultra to S23 Ultra.
Instead of removing the 10x zoom, which is less useful in actual use, it is interpreted as a strategy to improve image quality by changing to a 5x zoom and a 50 million pixel, 1/2.52 inch size sensor.
In an article titled ‘Ultra-high-resolution 200-megapixel telephoto camera: the next innovation in smartphone photography’ recently posted on Newsroom, Samsung Electronics said, “Generally, the optical format of telephoto image sensors is in the relative range of 1/2.7 inch to 1/2 inch . It is small. “From a user perspective, these specification differences mean that telephoto cameras provide different image quality, color, and HDR experiences than wide-angle cameras.”
He added, “Bridging the gap between wide-angle cameras and telephoto cameras has become a key task for the smartphone industry, and the need for telephoto sensors to ultimately reach the same level of specifications and functions as wide-angle sensors is emerging.”


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FaceIdent system is designated for identifying a person by his face image. It is implemented as a software module that can be used independently or in combination with different soft hardware, such as video surveillance and authorization system.
The proposed system is demanded in many areas. For example in offices it can be used to replace mechanical keys with biometric one and for logging staff working time. FaceIdent application in services sector will make it possible to identify a standing customer in advance, to use an individual approach, tailoring services according to previous orders.
Technical characteristics of the biometric identification module:
For further information please contact Michail Petrushan.


Lizardsystems Wi-Fi Scanner 22.12 Crack Plus Keygen Download
Lizardsystems Wi-Fi Scanner 22.12 Crack is a comprehensive software that helps people analyze and manage Wi-Fi networks. It has many features that help improve network speed, improve connectivity, and find and fix problems. Moreover, the software shows signal strength, channel usage, and security for adjacent wireless networks.
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BMW Scanner 1.4
Old versionsSee all
Interprets the data collected from BMW cars while they're connected to the PC through a K-line adapter and stores statistical data regarding the ECU. Works with BMW SUV, Z4, X3, X5 as well as the 3, 5 and 7 series.
This software can connects with car by means of any standard K-line adapter.
Now it's the best software for expert analysis and storing statistical data from BMW electronic control units.
BMW Scanner intended to work with BMW 3, 5, 7 series, X3, X5 SUV and Z4 roadster cars.
BMW Scanner is a software developed for automotive diagnostics and firmware.


Because of the limitation of currently available Enterprise data warehousing tools, Organizations were not able to consolidate their data at one place to maintain faster data processing. Traditional ETL tools may take hours, days and sometimes even weeks. Performances of these tools are limited by two Hardware limitations.
- The vertical hardware scalability: Hardware can be scaled vertically to one extent beyond which no further addition is possible. For example, if the required RAM can be scaled to 64 GB or so, but even this is having some limitation and beyond that no RAM can be added.
- Hardware Failure: In this structure of hardware, failure of even a small component can lead the down of entire processing.
With the use of distributed parallel processing design Hadoop overcome these scenarios. This can be configured using low cost commodity machines. This technique relies on horizontal scaling of hardware. Horizontal scaling can be achieved by adding new commodity machines without any limitations. The best part of this type of hardware is fault tolerant and can accommodate one or more machine failure without much performance hit.
By harnessing the true capability of distributed parallel processing Hadoop not only enables organization to decentralize its data and allow them to capture data at very low granular level but also speeds up its processing on decentralized data to the maximum. By enabling Hadoop an organization, with huge data, can get its analysis within minute for which it was waiting for hours in traditional ETL with very less data.
On the one had Hadoop makes the life of an organization simple by letting them collect all the data of all the times without even concerning of its size and processing speeds, On the other hand it gives the power to the organization to analyze these data, in no time, the way they require to improve the performance of the organization.
Hadoop is doing all this magical job with the help of its four core components which makes its architecture an elegant design. These components can be listed as below.
- HDFS (Hadoop Distributed File System) : This file system lays the foundation of Hadoop. It provides reliable data storage across all the nodes of a cluster of Hadoop. This file system links together all nodes which is available in a cluster and make them a single file system. Adding a new Machine in this cluster is just like increase the storage space.
- YARN (Yet Another Resource Negotiator): At the one side, HDFS is connecting all the nodes of a cluster in such a way that the storage spread across machine is treated as one single storage, on the other side, YARN does the same thing with CPU and Memory. It works like an operating system in Hadoop like Monitor and manages workloads, implementing security controls, and managing high availability features of Hadoop.
- MapReduce: This programming paradigm is the heart of Hadoop which facilitates tremendous scalability across hundreds or thousands of servers in a Hadoop cluster. It is actually a combination of two separate and distinct tasks (MAP and REDUCE) which makes Hadoop to take the large data set, spread it across multiple nodes of Hadoop, get the processed results and combine the results to return it to the user in quickest manner.
- Hadoop common: This module contains the utilities that support the other Hadoop components to work or interact with each other.


There are people who check the weather every day. And then there are people who check the weather once or twice a season to see if a blizzard is coming or if they need to bring a jacket on family vacation.
I’m the latter, which is a tad ironic since I oversee the team at Lockheed Martin Space who manufactures weather satellites. When my husband, the self-proclaimed weather geek, quotes meteorologists’ forecasts — most of which are made using inputs from our GOES-R satellites — it always puts a smile on my face.
While our GOES-R technology is used every day to create accurate weather forecasts around the world, Lockheed Martin’s weather story doesn’t start there. Our satellites and systems have been working to save lives and property for over 70 years.
Since our heritage company began building Radiosondes for the military in 1949, we’ve built six million of those and 107 weather satellites. These products have evolved from tracking weather to also tracking people in distress. The GOES-R satellites have a special Search and Rescue Satellite-Aided Tracking (SARSAT) System to find lost explorers around the world at any time and in almost any condition. Last summer, these tracking devices helped save stranded boaters off the coast of the Cayman Islands, a pilot who crawled from a downed aircraft in the forests north of Chattanooga, and a crashed motorcyclist in the mountains of Montana.
Building life-saving weather forecasting technology
Our company’s weather footprint allows meteorologists to gather some other amazing, life-saving data, too.
For example, the U.S. Air Force’s WC-130 Hurricane Hunters aircraft — which are built by our Aeronautics team in Marietta, Georgia — fly crewmembers into the belly of the beast during storms to collect high-density, highly accurate weather data about the pressure, temperature, humidity and wind speed of hurricanes and tropical storms. This data is used to help forecasters and state agencies decide where the storm is headed and when to evacuate the people in its path.
Another example is our Mark IV-B software, which lets military meteorologists analyze different types of weather data from our partners around the world, including Canada’s, Japan’s, and the European Union’s weather agencies. These analyses can help warfighters make quick decisions about rerouting around fog or understanding exactly how thick and dangerous a volcanic ash cloud may be.
We also build WindTracer, a wind measurement tool that pulses laser beams to measure aircraft wakes for hundreds of thousands flights across the world and provides real-time warnings of hazardous winds.
Tracking weather in space and beyond
With all the advances we’ve made in weather technology, it’s hard to imagine where we go from here.
As we continue to grow our presence beyond Earth, we also need to understand the weather in space. Tracking space weather — like solar flares — helps protect our existing orbital fleet from space-based dangers.
New SmartSat™ tech will also allow satellite operators to adjust the satellite’s mission while it’s already in orbit. SmartSat isn’t a robot per se, but it takes advantage of multi-core processing (something new to space!) to let satellites process more data in orbit so they can beam down only the most critical and relevant information. This saves customers bandwidth costs and reduces the burden on ground station analysts, ultimately opening the door for tomorrow's data centers in space.
As winter weather sets in across the U.S. — weather geeks or not — we’ll all continue to rely on satellite data for our day-to-day decisions. Today’s data will continue saving lives and property — on our planet and perhaps someday, beyond.


CESA-2009-001 - rev 1
[See all my vulnerabilities at
[Blog if you want to subscribe to new findings is at
Linux syscall interception technologies partial bypass
Programs affected: Probably many; for example systrace with ptrace()
Fixed: Systrace 1.6f for 32-bit build (but you are cautioned that ptrace()
is not a security technology).
Severity: Syscall policy violation.
Various security technologies make use of syscall filtering. Such technologies
are very powerful because they restrict a compromise not just in terms of
access to files, networks and processes -- but also access to the rich kernel
API (a great source of ring 0 bugs).
Syscall filtering technologies typically make an allow / deny decision based
on the syscall (identified by a number) and sometimes also the exact arguments
to the syscall. A vulnerability exists due to the identification of syscall by
number. On 64-bit aware Linux kernels (x86_64), the syscall number can map to
either the 32-bit or 64-bit syscall table. Since the syscall tables are
different for 32-bit vs. 64-bit, and the user space process gets to control
which table it hits, the syscall number check can often be fooled.
For example, a syscall filter technology might be monitoring a 64-bit process,
and configured to allow some subset of the very common
syscall. That's syscall number 2 in 64-bit land. However, the monitored process
can switch to 32-bit mode and issue syscall 2. That appears to be
open() to the monitor but will execute as
in the kernel - possibly leading to an unmonitored process.
Here is a sample piece of code which does a 32-bit syscall:
main(int argc, const char* argv)
/* Syscall 1 is exit on i386 but write on x86_64. */
asm volatile("movl $1, %eax\n"
When built 64-bit, and run under strace on my 64-bit machine, the difference
in opinion on the syscall is apparent:
write(1, "\370V\355\365\377\177", 140737319359320 <unfinished ... exit status 208>
The monitor sees
write() but the kernel sees (and executes!)
Detecting this situation has some subtleties. Which syscall table the kernel
hits depends on both the instruction used to trap into the kernel, and also
the "long mode" bit in the current descriptor referred to by the code segment
sysenter always cause a
32-bit syscall, but
syscall looks at the descriptor. Therefore,
to securely monitor a 32-bit process, it is sufficient just to validate that
the CS register references a privileged 32-bit descriptor. Unfortunately, to
securely monitor a 64-bit process, not only must the CS register be checked,
but the instruction initiating the syscall must be checked. This involves
reading user-space which is of course is subject to well-documented lethal race
conditions when other processes which share writeable address space.
CESA-2009-001 - rev 1


Ubtech Robotics Launches Quarantine Hotel Outbreak Solution
Chinese humanoid robot maker Ubtech Robotics recently launched a science and technology anti-epidemic solution for quarantine hotels. According to Xiong Youjun, Ubtech’s CTO, the solution uses intelligent robots such as temperature measurement, UV and spray disinfection, delivery and logistics, and integrates large-screen display and control systems. , mobile terminals and operations management platforms to provide protection against epidemic functions. At present, the solution has been applied to the quarantine hotel in Shenzhen.
Dada Express Launches “Dada Smart Matching” Instant Delivery SaaS System
Dada Express launched the “Dada Smart Matching” instant delivery SaaS system. The system provides an integrated real-time delivery system solution for distribution service providers and merchants with self-distribution capability, covering three main capacity modules: omnichannel order access, order management, order delivery and capacity management.
Semiconductor Lidar Company Tanway Completes RMB 100 Million Series A Round
Chinese semiconductor lidar technology company Tanway has completed a RMB 100 million Series A financing round. This round was co-led by Joint Capital and Jiayi Fund, with participation from SDP Investment and Hongsheng Investment. The proceeds are mainly used to build a car-level lidar production base and test calibration center, as well as building a new R&D team for the product line.
Beijing to advance deployment of future 6G network
Beijing will build a benchmark city for the global digital economy. On the one hand, to expose cutting-edge digital technologies, by focusing on the âsensing-transmitting-computing-ingingâ data chain, and by upstreaming digital technologies such as the future 6G network, quantum technology, algorithmic innovation and blockchain to capture the heights of digital technology; on the other hand, explore the formation of a leading digital governance rules system, create new features and systematically plan systems and rules innovation.
MIIT: strengthen IoV network security and data security
The Ministry of Industry and Information Technology requires all relevant companies to adopt managerial and technical measures to strengthen the protection of the security of automobiles, networks, platforms and data in accordance with the requirements of Network security and vehicle internet data security standards, to monitor, prevent and promptly address cybersecurity risks and threats to ensure that data is in a state of effective protection and lawful use.
(China Money Network articles are curated and translated from credible Chinese media organizations with established brands, experienced editorial teams, and trustworthy journalistic practices. However, we are not responsible for the accuracy of the information. For any questions, please contact our editorial department.)


As you could read in a previous blog, I’m trying to create a small webcam game in Flash that supports ‘physical input’ using a webcam. The frames are processed by a C++ server that uses existing computer vision libraries. This way it should be fairly easy to build in cool features like face detection.
Now I’ve finally managed to get some things working on my Flash / C++ computer vision project. Zoran (my project advisor at the University of Amsterdam) helped me a lot on the C++ computer vision part. Using the OpenCV library we’ve managed to put face detection in a Flash application! Input from the webcam is sent via a Socket to a light weight server running localhost. When a face is detected, a message is sent back to Flash.
The boundaries of the face in the image are also known. I just have to think of some kind of protocol to send and retrieve different kinds (and sizes) of data.
The result of the image detection from OpenCV (using the red color channel here):