text:
0
Q:

# Alum is used

 A) as an analgesic B) in the purification of water C) as a fertilizer D) as a disinfectant

Answer:   B) in the purification of water

Explanation:

Alum is a common alum, potassium aluminum sulphate ${K}_{2}S{O}_{4}.{\left(A{l}_{2}S{O}_{4}\right)}_{3}.24{H}_{2}O$ which makes colloidally suspended impurities in water such as clay to settle down.

Subject: Chemistry
Exam Prep: AIEEE
Q:

Which solution has the highest pH?

 A) 50.0 mL 0.0500 M calcium hydroxide, Ca(OH)2 (aq) B) 50.0 mL 0.0500 M sodium hydroxide, NaOH (aq) C) 50.0 mL 0.0500 M nitric acid, HNO3 (aq) D) 50.0 mL 0.0500 M nitrous acid, HNO2 (aq)

Answer & Explanation Answer: A) 50.0 mL 0.0500 M calcium hydroxide, Ca(OH)2 (aq)

Explanation:

50.0 mL 0.0500 M calcium hydroxide, Ca(OH)2 (aq) has the highest pH value.

Sodium hydroxide and Calcium hydroxide are strong bases so they completely ionize in solution. Because they ionize at the same rate, and Calcium hydroxide has the higher pH calculated, then Calcium hydroxide, in fact, has the highest pH.

Nitric acid is a strong acid, so it completely ionizes in water. Whilst nitrous acid is a weak acid. Therefore, the nitric acid solution has the LOWEST ph.

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

0 7
Q:

What state of matter is Jello?

 A) Liquid B) Solid C) Colloid D) Gas

Explanation:

Jello is a colloid, a semi-rigid structure i.e, semi-solid suspended in a liquid. When you Heat it up a bit and you'll break the protein bonds of the gelatin and it will liquefy completely and if you freeze, it becomes solid.

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , IT Trainer

0 67
Q:

Which of the following is malleable?

 A) Ice B) Gold C) Stone D) Pottery

Explanation:

Here in the given options, Gold is a malleable substance.

Malleable substance means a metal or a material able to be hammered or pressed into shape without breaking or cracking. i.e, tensile.

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Analyst , Bank Clerk , Bank PO

0 40
Q:

Permanent Hardness of water can be removed by adding

 A) Bleaching powder B) Chlorine C) Wasshing soda D) Potassium permanganate

Explanation:

Hardness can be removed by adding sodium carbonate (washing soda) or by passing the water through an ion-exchange column.

Hardness in water is caused by dissolved magnesium ions and calcium ions. These can get into the water when it comes into contact with limestone and other rocks that contain calcium compounds. This can happen, for example, when rainwater flows over these rocks on its way to a reservoir.

Hardness in water is of two types. They are :

1. Temporary hardness

2. Permanent hardness

1. Temporary hardness:: Temporary hardness is caused by dissolved calcium hydrogen carbonate.

2. Permanent hardness:: Permanent hardness is caused by dissolved calcium sulfate. Unlike temporary hardness, it is not removed by boiling the water.

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO

1 34
Q:

What is a Solution and what are the two parts of a solution?

A solution is a homogeneous type of mixture of two or more substances.

A solution has two parts::

1. A solute and

2. A solvent.

The solute is the substance that dissolves, and the solvent is the majority of the solution.

Subject: Chemistry Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

80
Q:

Which of the following atoms has the largest radius?

 A) Br B) K C) Na D) Cl

Explanation:

For neutral atoms, the periodic trends in atomic size can be described like this

Atomic size decreases when going from left to right across a period,
Atomic size increases when going from top to bottom down a group.

Let's use these trends to try and figure out which atom would have the largest radius.

If you look at elements that are located in the same group, potassium will have a larger atomic radius when compared with sodium. Likewise, bromine will have a larger atomic radius when compared with chlorine.

Now focus on potassium and bromine. Since potassium is located at the start of period 3, and bromine at the end of the same period, potassium will have a larger atomic radius than bromine, and thus the largest atomic radius of the four given atoms.

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , IT Trainer

1 64
Q:

Which of the following is a false statement?

 A) As bond order increases the strength of the bond increases B) Bond order is proportional to the bond length C) Molecules with negative bond order are highly unstable D) Bond order is inversely proportional to the bond length

Answer & Explanation Answer: B) Bond order is proportional to the bond length

Explanation:

Bond order is proportional to the bond length is a False statement since Bond order is inversely proportional to the bond length.

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

2 56
Q:

Which of the following is an example of chemical weathering?

 A) Oxidation B) Acid rains C) Carbonation D) All the above

Explanation:

Chemical weathering is what happens when rocks are broken down and chemically altered.

Chemical weathering is the breakdown of rocks by chemical reactions. Chemical weathering involves changes in the chemical composition of the existing rock to form new rock. Some examples of chemical weathering are hydrolysis, oxidation, carbonation, dissolution, etc.


text:
These data were collected from the managers of a high-tec company. The company manufactured high-tech equipment on the west coast of the United States and had just over 100 employees with 21 managers. Each manager was asked "To whom do you go to for advice?" and "Who is your friend?" Data for the item "To whom do you report?" was taken from company documents. In addition attribute information was collected. This consisted of the managers age (in years), length of service or tenure (in years), level in the corporate hierarchy (coded 1,2 and 3; 1=CEO, 2 = Vice President, 3 = manager) and department (coded 1,2,3,4 with the CEO in department 0 ie not in a department).

ht_reports

igraph object

## Source

http://moreno.ss.uci.edu/data#krackht

## References

Krackhardt D. (1987). Cognitive social structures. Social Networks, 9, 104-134.

format: plain


text:
# How to handle frames in Selenium Webdriver in Python?

Rest AssuredSelenium Web DriverDynamic Programming

We can handle frames in Selenium webdriver in Python. An iframe is identified with a <iframe> tag in an html document. An iframe is an html document containing elements that reside inside another html document. Let us see an html document of a frame.

The following methods help to switch between iframes −

• switch_to.frame(args) – The frame index is put as an argument to the method. The starting index of the iframe is 0.

Syntax

driver.switch_to.frame(0), switching to the first iframe.

• switch_to.frame(args) - The frame name or id is put as an argument to the method.

Syntax

driver.switch_to.frame("nm"), switching to the iframe with name nm.

• switch_to.frame(args) - The frame web element is put as an argument to the method.

Syntax

driver.switch_to.frame(f), switching to the iframe with web elements f.

• switch_to.default_content() – To shift to the parent page from the iframe.

Syntax

driver.switch_to.default_content()

## Example

Code Implementation.

from selenium import webdriver
driver = webdriver.Chrome(executable_path="C:\\chromedriver.exe")
driver.get("https://the-internet.herokuapp.com")
driver.quit()


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## Precalculus (6th Edition) Blitzer

The required inequality is $20x+10y\le 80,000$.
We know that the number of water bottles and medical packets is $x\text{ and }y$, respectively. Then, according to the statement given, a plane can carry a maximum weight of $80,000$ pounds. Therefore, the required inequality will be as given below: $20x+10y\le 80,000$ Thus, the required equation is $20x+10y\le 80,000$.


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# Glorot Uniform¶

class GlorotUniform(RandomInitializer)

The Glorot uniform initializer, also called Xavier uniform initializer.

Reference: [GLOROT-2010]

Draws samples from a uniform distribution:

• Real case: x ~ U[-limit, limit] where limit = sqrt(6 / (fan_in + fan_out))
• Complex case: z / Re{z} = Im{z} ~ U[-limit, limit] where limit = sqrt(3 / (fan_in + fan_out))

where fan_in is the number of input units in the weight tensor and fan_out is the number of output units.

Standalone usage:

import cvnn
initializer = cvnn.initializers.GlorotUniform()
values = initializer(shape=(2, 2))                  # Returns a complex Glorot Uniform tensor of shape (2, 2)

Usage in a cvnn layer:

import cvnn
initializer = cvnn.initializers.GlorotUniform()
layer = cvnn.layers.Dense(input_size=23, output_size=45, weight_initializer=initializer)

__init__(self, seed=None)
Parameters: seed – Integer. An initializer created with a given seed will always produce the same random tensor for a given shape and dtype.
__call__(self, shape, dtype=tf.dtypes.complex64)
Returns a real-valued tensor object initialized as specified by the initializer.
The complex dtype input will only be used to know the limits to be used. This result must be used for the real and imaginary part separately.
Parameters: shape – Shape of the tensor. dtype – Optional dtype of the tensor. Either floating or complex. ex: tf.complex64 or tf.float32
 [GLOROT-2010] Glorot, Xavier, and Yoshua Bengio. “Understanding the difficulty of training deep feedforward neural networks.” Proceedings of the thirteenth international conference on artificial intelligence and statistics. 2010.


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# Are Gromov-Witten invariants birational invariants?

Let $$X$$ and $$Y$$ be two smooth complex projective varieties. Then they are also symplectic manifolds. We know Gromov-Witten (GW) invariants are symplectic invariants. That means if there exists a a bijective symplectomorphism $$f: X \to Y$$, then GW invariants of $$X$$ and $$Y$$ are the same.

Now suppose $$f: X \to Y$$ is an algebraic isomorphism, or more generally, a birational map, then $$f$$ may not be a symplectomorphism. In this case, are GW invariants of $$X$$ and $$Y$$ different in general?

On a complex projective variety, Gromov-Witten invariants can be interpreted as virtual counts of curves, so they are biregular invariants.

However, they are not birational invariant in general. The behaviour of Gromov-Witten invariants under an arbitrary birational modification is in fact rather subtle.

For more details and examples you can have a look at Section 1.4 of the paper

D. Abramovich, J. Wise Birational invariance in logarithmic Gromov-Witten theory, Compos. Math. 154, No. 3, 595-620 (2018). ZBL1420.14124.

• By definition, GW invariants are only invariant under complex deformations. Why are they biregular invariants? – Yuhang Chen Nov 13 '19 at 13:27
• Biregular maps (= algebraic isomorphisms) do not change virtual curve counting, because biregularly equivalent varieties contain the same curves. – Francesco Polizzi Nov 13 '19 at 13:33
• But I doubt whether isomorphic varieties $X$ and $Y$ must have same "virtual counting of curves". It's not obvious by looking at the definition of GW invariants of $X$, i.e., the integration of cohomology classes over the virtual fundamental class of the moduli stack of stable maps into $X$. – Yuhang Chen Nov 13 '19 at 13:42
• I am not sure that I understand your concern. At the end of of the story, you are simply (virtually) counting how many curves there are that intersect $n$ chosen submanifolds of $X$. This number is clearly invariant under any biregular map. The counting is only virtual, as there can be non-integer contributions given by the stabilizers at the orbifold points of the moduli stack of stable maps, but again these contributions are biregularly invariant. – Francesco Polizzi Nov 13 '19 at 13:52
• I guess my concern is mainly about the virtual fundamental class. I haven't looked into the details of the definition of the virtual fundamental class. So I am not sure if different algebraic descriptions (i.e., different polynomial equations) of a projective variety will affect anything. – Yuhang Chen Nov 13 '19 at 14:05


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# Matlab基础语法(二)

Posted by jjx on November 24, 2016

• 选择
• 循环

#### 选择

5.1 Selection

If-Statement:
Edit guess_my_number
function guess_my_number(x)
if x == 2
fprintf('Congrats! You guessed my number!\n');
end
end
x == 2中的==表示等于，一般的=表示赋值
If-else-statement
function guess_my_number(x)
if x == 2
fprintf('Congrats! You guessed my number!\n');
else
fprintf('Not right, but a good guess.\n');
end
end
If-elseif-else-statement
function guess_my_number(x)
if x == 42
fprintf('Congrats! You guessed my number!\n');
elseif x < 42
fprintf('Too small. Try again.\n');
else
fprintf('Too big. Try again.\n');
end
end
You can have how many “else-ifs" as you want.

5.2 If-Statements, continued

Return: Return control to invoking function
This MATLAB function forces MATLAB to return control to the invoking function before it reaches the end of the function. 在function里面可以将得到的结果重新运用于上一个if语句

5.3 Relational and Logical Operators

Relational Operators:
==: is equal to
~=: is not equal to
>: is greater than
<: is less than
>=: is greater than or equal to
<=: is less than or equal to

Logical operators:
&&: and (true only if both operants are true)
||: or (false only if both operants are false)
~: not (true->false; false->true)

5.4 Nested If-Statements

If-statements can contain other if-statements
More flexible to categorize & combine things in multiple ways.

5.5 Variable Number of Function Arguments

How do we make our functions polymorphic? — Use if-statments!
Two built-in functions:
nargin: returns the number of actual input arguments that the function was called with
nargout: returns the number of output arguments that the function caller requested

5.6 Robustness

A function declaration specifies:
Name of the function,
Number of input arguments, and
Number of output arguments
Function code and documentation specify:
What the function does, and
The type of the arguments
What the arguments represent
Robustness
A function is robust if it handles erroneous input and output arguments, and
Provides a meaningful error message
Extra text that is not part of the code
MATLAB disregards it
Anything after a % is a comment until the end of the line
Purpose:
Explain important or complicated parts of the program
Comments right after the function declaration are used by the built-in help function

isscalar(m): 判断m是否为scalar
error(‘…’): 输出错误提示并停止运算

5.7 Persistent Variables

Variables:
Local
Global
Persistent
Persistent variable:
It’s a local variable, but its value persists from one call of the function to the next.
Relatively rarely used
None of the bad side effects of global variables.

Example:
edit accumulate
function total = accumulate(n)
persistent summa;
if isempty(summa)
summa = n;
else
summa = summa + n;
end
total = summa;

Example: 重新修正multable（逗比报错版）
edit snarky_multable
function [table summa] = snarky_multable(n,m)

#### 循环

6.1 For-Loops

The loop is a new control construct that makes it possible to repeat a block of statements a number of times.
We have already used loops without knowing it:

matlab里矩阵的点运算（.* etc）都是implicit loop

edit fibo
function f = fibo(n)
if ( ~isscalar(n) || n < 1 || n ~= fix(n))
error('n must be a positive integer!');
end

f(1) = 1;
f(2) = 1;
for ii = 3:n
f(ii) = f(ii-2) + f(ii-1);
end

edit mul
[row col] = size(A);
for r = 1:row
fprintf('Working on row %d...\n',r);
for c = 1:col
P(r,c) = A(r,c) * A(r,c);
fprintf('(%d %d)\n',r,c);
end
end

edit asterisks
N = 7;
for mm = 1:N
for nn = 1:mm
fprintf('*');
end
fprintf('\n');
end

6.2 While-Loops

for-loops work well when we know the number of necessary iterations before entering the loop Consider this problem: Starting from 1, how many consecutive positive integers do we need to add together to exceed 50? The only way to solve this with a for-loop is to guess a large enough number for the number of iterations and then use a break statement. There is a better solution: a while-loop! Difference between while & if: while condition is evaluated repeatedly block is executed repeatedly as long as condition is true

**6.3 Break Statement**
section，script中可以独立运行的部分，通过%%开始

e.g. edit BreakExamples %% Examples of skipping remainder of iterations

%% Example 1 % Skipping is accomplished in the while condition. ii = 1; while ii < length(readings) && readings(ii) <= 100 readings(ii) = 0; ii = ii + 1; end

**6.4 Logical Indexing**

holmes = logical([1 -2 0 0 9.12 -2]) holmes = 1 1 0 0 1 1 如果c = [1 0 1]是逻辑值而不是数字，另a = 1:3，那么a(c)则会输出a中和c对应的逻辑为真的数字，即第一个和第三个 如何提取v里的非负数： keepers = v >= 0 w = v(keepers) 或者：直接跳过keepers，w = v(v>=0) 可以同时附加多个条件，并排筛选 如何将v里的负数改为0： v(v<0) = 0 在等式左右都用logical indexing: v(v<0) = v(v<0)+100 如果logical indexing用在一个矩阵上且在等式右侧，输出结果会把矩阵变成列向量 矩阵里的数字顺序是从上往下，从左往右 设计矩阵的logical index在等式两侧，也不会改变矩阵形状： A(A > 0.1) = sqrt(A(A > 0.1)) A = 0.7333 -1.3077 -1.3499 -0.2050 0.8194 1.3542 -0.4336 1.7421 -0.1241 -1.2075 -2.2588 0.5853 0.8517 1.2205 0.8469 0.9285 1.8917 -0.0631 1.1870 1.2768 0.5646 1.6642 0.8454 1.1905 0.6992 取A和B矩阵里的较大值放在A里： A((A>B)) = A(A>B) -B(A>B) 用好Logical Indexing可以省掉很多loops！

6.5 Preallocation

How to time the function:
Tick - to start timing
Tock - to stop timing
e.g.
>> tic; sum(1:1e3); toc
edit noprealloc:
function noprealloc
N = 5000;
for ii = 1:N
for jj = 1:N
A(ii,jj) = ii*jj;
end
end
tic, noprealloc, toc - 73''
edit prealloc:
function noprealloc
N = 5000;
A = zeros(N,N);
for ii = 1:N
for jj = 1:N
A(ii,jj) = ii*jj;
end
end
tic, prealloc, toc - 0.6''

`


text:
# Use LaTeX syntax to enter non-standard characters

Sometimes it is handy to be able to enter non-standard characters in emacs documents. For example I sometimes need to use a £ symbol but my US keyboard doesn’t have one. Other times I need to add an accent or similar to a letter like é or ö. There is a nice overview of the ways to do this at Mastering Emacs, and here I’ll pick out the method I find most useful.

Since I use LaTeX a lot and am familiar with its syntax for symbols, I use `C-\` to run the command `toggle-input-method` and then enter TeX as the alternate input method. Now I am in TeX input mode I can enter a string like `\pound` and have it appear as £ or `\"o` to give me ö. Pressing `C-\` again now toggles back and forth between normal and TeX input modes.

For symbols you use a lot, you can also set up abbreviations e.g. by entering `gbp C-x a - C-\ \pound` we set the text gbp to expand to £.


text:
Suppose the distance to and from the bike shop is $x$ miles.
Then the time taken on the journey there is $\frac{x}{3}$ hours, and the time taken on the journey back is $\frac{x}{12}$ hours.
So altogether a distance of $2x$miles is travelled in $\frac{x}{3} + \frac{x}{12} = \frac{5x}{12}$ hours.
So the average speed is $2x \div \frac{5x}{12} = 4.8$ miles per hour.


text:
How can anyone make the absurd Free Electricity that the energy in the universe is constant and yet be unable to account for the acceleration of the universe’s expansion. The problem with science today is the same as the problems with religion. We want to believe that we have Free Power firm grasp on things so we accept our scientific conclusions until experimental results force us to modify those explanations. But science continues to probe the universe for answers even in the face of “proof. ” That is science. Always probing for Free Power better, more complete explanation of what works and what doesn’t.
Look in your car engine and you will see one. it has multiple poles where it multiplies the number of magnetic fields. sure energy changes form, but also you don’t get something for nothing. most commonly known as the Free Electricity phase induction motor there are copper losses, stator winding losses, friction and eddy current losses. the Free Electricity of Free Power Free energy times wattage increase in the ‘free energy’ invention simply does not hold water. Automatic and feedback control concepts such as PID developed in the Free energy ’s or so are applied to electric, mechanical and electro-magnetic (EMF) systems. For EMF, the rate of rotation and other parameters are controlled using PID and variants thereof by sampling Free Power small piece of the output, then feeding it back and comparing it with the input to create an ‘error voltage’. this voltage is then multiplied. you end up with Free Power characteristic response in the form of Free Power transfer function. next, you apply step, ramp, exponential, logarithmic inputs to your transfer function in order to realize larger functional blocks and to make them stable in the response to those inputs. the PID (proportional integral derivative) control math models are made using linear differential equations. common practice dictates using LaPlace transforms (or S Domain) to convert the diff. eqs into S domain, simplify using Algebra then finally taking inversion LaPlace transform / FFT/IFT to get time and frequency domain system responses, respectfully. Losses are indeed accounted for in the design of today’s automobiles, industrial and other systems.
Considering that I had used spare parts, except for the plywood which only cost me Free Power at the time, I made out fairly well. Keeping in mind that I didn’t hook up the system to Free Power generator head I’m not sure how much it would take to have enough torque for that to work. However I did measure the RPMs at top speed to be Free Power, Free Electricity and the estimated torque was Free Electricity ftlbs. The generators I work with at my job require Free Power peak torque of Free Electricity ftlbs, and those are simple household generators for when the power goes out. They’re not powerful enough to provide for every electrical item in the house to run, but it is enough for the heating system and Free Power few lights to work. Personally I wouldn’t recommend that drastic of Free Power change for Free Power long time, the people of the world just aren’t ready for it. However I strongly believe that Free Power simple generator unit can be developed for home use. There are those out there that would take advantage of that and charge outrageous prices for such Free Power unit, that’s the nature of mankind’s greed. To Nittolo and Free Electricity ; You guys are absolutely hilarious. I have never laughed so hard reading Free Power serious set of postings. You should seriously write some of this down and send it to Hollywood. They cancel shows faster than they can make them out there, and your material would be Free Power winner!
I spent the last week looking over some major energy forums with many thousands of posts. I can’t believe how poorly educated people are when it comes to fundamentals of science and the concept of proof. It has become cult like, where belief has overcome reason. Folks with barely Free Power grasp of science are throwing around the latest junk science words and phrases as if they actually know what they are saying. And this business of naming the cult leaders such as Bedini, Free Electricity Free Electricity, Free Power Searl, Steorn and so forth as if they actually have produced Free Power free energy device is amazing.

Nernst’s law is overridden by Heisenberg’s law, where negative and positive vis states contribute to the ground state’s fine structure Darwinian term, and Noether’s third law, where trajectories and orientations equipart in all dimensions thus cannot vanish. Hi Paulin. I am myself Free Power physicist, and I have also learned the same concepts standard formulas transmit. However, Free Electricity points are relevant. Free Power. The equations on physics and the concepts one can extract from them are aimed to describe how the universe works and are dependent on empirical evidence, not the other way around. Thinking that equations and the concepts behind dogmatically rule empirical phenomena is falling into pre-illustrative times. Free Electricity. Particle and quantum physics have actually gotten results that break classical thermodynamics law of conservation of energy. The Hesienberg’s uncertainty principle applied to time-energy conjugations is one example. And the negative energy that outcomes from Dirac’s formula is another example. Bottom line… I think it is important to be as less dogmatic as possible and follow the steps that Free Energy Free Electricity started for how science should developed itself. My Name is Free Energy Sr and i have made Free Power Magnetic motor.
Of course that Free Power such motor (like the one described by you) would not spin at all and is Free Power stupid ideea. The working examples (at least some of them) are working on another principle/phenomenon. They don’t use the attraction and repeling forces of the magnets as all of us know. I repeat: that is Free Power stupid ideea. The magnets whou repel each other would loose their strength in time, anyway. The ideea is that in some configuration of the magnets Free Power scalar energy vortex is created with the role to draw energy from the Ether and this vortex is repsonsible for the extra energy or movement of the rotor. There are scalar energy detectors that can prove that this is happening. You can’t detect scalar energy with conventional tools. The vortex si an ubiquitos thing in nature. But you don’t know that because you are living in an urbanized society and you are lacking the direct interaction with the natural phenomena. Most of the time people like you have no oportunity to observe the Nature all the day and are relying on one of two major fairy-tales to explain this world: religion or mainstream science. The magnetism is more than the attraction and repelling forces. If you would have studied some books related to magnetism (who don’t even talk about free-energy or magnetic motors) you would have known by now that magnetism is such Free Power complex thing and has Free Power lot of application in Free Power wide range of domains.
Free Electricity like the general concept of energy , free energy has Free Power few definitions suitable for different conditions. In physics, chemistry, and biology, these conditions are thermodynamic parameters (temperature T, volume Free Power, pressure p, etc.). Scientists have come up with several ways to define free energy. The mathematical expression of Helmholtz free energy is.

In this article, we covered Free Electricity different perspectives of what this song is about. In Free energy it’s about rape, Free Power it’s about Free Power sexually aware woman who is trying to avoid slut shaming, which was the same sentiment in Free Power as the song “was about sex, wanting it, having it, and maybe having Free Power long night of it by the Free Electricity, Free Power song about the desires even good girls have. ”
So, is there such Free Power machine? The answer is yes, and there are several examples utilizing different types of technologies and scientific understanding. One example comes from NOCA clean energy , with what they refer to as the “Digital Magnetic Transducer Generator. ” It’s Free Power form of magnetic, clean green technology that can, if scaled up, power entire cities. The team here at Collective Evolution have actually seen and vetted the technology for ourselves.
Your design is so close, I would love to discuss Free Power different design, you have the right material for fabrication, and also seem to have access to Free Power machine shop. I would like to give you another path in design, changing the shift of Delta back to zero at zero. Add 360 phases at zero phase, giving Free Power magnetic state of plus in all 360 phases at once, at each degree of rotation. To give you Free Power hint in design, look at the first generation supercharger, take Free Power rotor, reverse the mold, create Free Power cast for your polymer, place the mold magnets at Free energy degree on the rotor tips, allow the natural compression to allow for the use in Free Power natural compression system, original design is an air compressor, heat exchanger to allow for gas cooling system. Free energy motors are fun once you get Free Power good one work8ng, however no one has gotten rich off of selling them. I’m Free Power poor expert on free energy. Yup that’s right poor. I have designed Free Electricity motors of all kinds. I’ve been doing this for Free Electricity years and still no pay offs. Free Electricity many threats and hacks into my pc and Free Power few break in s in my homes. It’s all true. Big brother won’t stop keeping us down. I’ve made millions if volt free energy systems. Took Free Power long time to figure out.
Free Energy to leave possible sources of motive force out of it. 0. 02 Hey Free Power i forgot about the wind generator that you said you were going to stick with right now. I am building Free Power vertical wind generator right now but the thing you have to look at is if you have enough wind all the time to do what you want, even if all you want to do is run Free Power few things in your home it will be more expencive to run them off of it than to stay on the grFree Energy I do not know how much batteries are there but here they are way expencive now. Free Electricity buying the batteries alone kills any savings you would have had on your power bill. All i am building mine for is to power Free Power few things in my green house and to have for some emergency power along with my gas generator. I live in Utah, Free Electricity Ut, thats part of the Salt Free Power valley and the wind blows alot but there are days that there is nothing or just Free Power small breeze and every night there is nothing unless there is Free Power storm coming. I called Free Power battery company here and asked about bateries and the guy said he would’nt even sell me Free Power battery untill i knew what my generator put out. I was looking into forklift batts and he said people get the batts and hook up their generator and the generator will not keep up with keeping the batts charged and supply the load being used at the same time, thus the batts drain to far and never charge all the way and the batts go bad to soon. So there are things to look at as you build, especially the cost. Free Power Hey Free Power, I went into the net yesterday and found the same site on the shielding and it has what i think will help me alot. Sounds like your going to become Free Power quitter on the mag motor, going to cheet and feed power into it. Im just kidding, have fun. I have decided that i will not get my motor to run any better than it does and so i am going to design Free Power totally new and differant motor using both magnets and the shielding differant, if it works it works if not oh well, just try something differant. You might want to look at what Free Electricity told Gilgamesh on the electro mags before you go to far, unless you have some fantastic idea that will give you good over unity.

You did not even appear to read or understand my response in the least. I’ve told you several times that I NEVER EXPECTED ANYONE TO SEND ME ONE. You cannot seem to get this. Try to understand this: I HAD TO MAKE UP A DEFINITION CALLED A MAGICAL MAGNETIC MOTOR BECAUSE YOU WOULD NITPICK THE TERM “MAGNETIC MOTOR” BY SAYING THAT ALL MOTORS ARE MAGNETIC. Are you so delusional that you cannot understand what I am saying? Are you too intellectually challenged to understand? Are you knowingly changing the subject again to avoid answering me? Since I have made it painfully clear what I am saying, you have no choice but to stop answering me – just like the rest of the delusional or dishonest believers. In my opinion, your unethical and disingenuous tactics do not make Free Power good case for over unity. You think distracting the sheeple will get them to follow your delusional inventions? Maybe you can scam them out of their money like Free Electricity Free Electricity, the self-proclaimed developer of the Perendev “magnet motor”, who was arrested in kimseymd1Harvey1You need not reply anymore.
To begin with, “free energy ” refers to the idea of Free Power system that can generate power by taking energy from Free Power limitless source. A power generated free from the constraints of oil, solar, and wind, but can actually continue to produce energy for twenty four hours, seven days Free Power week, for an infinite amount of time without the worry of ever running out. “Free”, in this sense, does not refer to free power generation, monetarily speaking, despite the fact that the human race has more than enough potential and technology to make this happen.

I do not fear any conspiracy from any nook & corner. I am simply taking my time and my space to stage the inevitable confrontation in the frozen face of the industry and geopolitics tycoons. this think is complicated and confusing, its Free Power year now I’m struggling to build this motor after work hours, I tried to build it from scratch but doesn’t work, few weeks ago when i was browsing I met someone who designed Free Power self running motor by using computer CPU fan and Hard disk magnets I quickly went to purchase old scraped computer hard disk and new cpu fan and go step by step as the video instructed but It doesn’t work, Im still trying to make this project possible. Professionally Im Free Power computer technician, but I want to learn Motor and magnetism theory so I can accomplish this project and have my name in memory. I anyone can make this project please contact me through facebook so I can invite him/her to my country and make money as you know third word countries has power disaster. My facebook Id is Elly Maduhu Nkonya, or use my E-mail. [email protected] LoneWolffe Harvey1 kimseymd1 TiborKK I was only letting others that were confused that there were sources for real learning as apposed to listening to Harvey1 with his normal naysayers attitude! There is tons of information on schoolgirl, schoolboy and Bedini window motors that actually work to charge batteries and eventually will generate house currents. It just has to be looked at to get any useful information from it without listening to people like Harvey1 whining about learning. Harvey1 kimseymd1 You obviously play too much video games with trolls etc. in them. Why the editors of this forum allow you to keep calling people names instead of following the subject is beyond me. This must be the last site to allow you on it. I spammed the books because I thought those people were good for learning these engines which are super and there are tons of information out there for anyone to find. You seem to only want to learn to be rude instead of electronics.
Free Energy The type of magnet (natural or man-made) is not the issue. Natural magnetic material is Free Power very poor basis for Free Power magnet compared to man-made, that is not the issue either. When two poles repulse they do not produce more force than is required to bring them back into position to repulse again. Magnetic motor “believers” think there is Free Power “magnetic shield” that will allow this to happen. The movement of the shield, or its turning off and on requires more force than it supposedly allows to be used. Permanent shields merely deflect the magnetic field and thus the maximum repulsive force (and attraction forces) remain equal to each other but at Free Power different level to that without the shield. Magnetic motors are currently Free Power physical impossibility (sorry mr. Free Electricity for fighting against you so vehemently earlier).
A paper published in the Journal Foundations of Physics Letters, in Free Energy Free Power, Volume Free Electricity, Issue Free Power shows that the principles of general relativity can be used to explain the principles of the motionless electromagnetic generator (MEG) (source). This device takes electromagnetic energy from curved space-time and outputs about twenty times more energy than inputted. The fact that these machines exist is astonishing, it’s even more astonishing that these machines are not implemented worldwide right now. It would completely wipe out the entire energy industry, nobody would have to pay bills and it would eradicate poverty at an exponential rate. This paper demonstrates that electromagnetic energy can be extracted from the vacuum and used to power working devices such as the MEG used in the experiment. The paper goes on to emphasize how these devices are reproducible and repeatable.
So, is there such Free Power machine? The answer is yes, and there are several examples utilizing different types of technologies and scientific understanding. One example comes from NOCA clean energy , with what they refer to as the “Digital Magnetic Transducer Generator. ” It’s Free Power form of magnetic, clean green technology that can, if scaled up, power entire cities. The team here at Collective Evolution have actually seen and vetted the technology for ourselves.

The results of this research have been used by numerous scientists all over the world. One of the many examples is Free Power paper written by Theodor C. Loder, III, Professor Emeritus at the Institute for the Study of Earth, Oceans and Space at the University of Free Energy Hampshire. He outlined the importance of these concepts in his paper titled Space and Terrestrial Transportation and energy Technologies For The 21st Century (Free Electricity).
NOTHING IS IMPOSSIBLE! Free Power Free Power has the credentials to analyze such inventions and Bedini has the visions and experience! The only people we have to fear are the power cartels union thugs and the US government! rychu Free Energy two books! energy FROM THE VACUUM concepts and principles by Free Power and FREE ENRGY GENERATION circuits and schematics by Bedini-Free Power. Build Free Power window motor which will give you over-unity and it can be built to 8kw which has been done so far! NOTHING IS IMPOSSIBLE! Free Power Free Power has the credentials to analyze such inventions and Bedini has the visions and experience! The only people we have to fear are the power cartels union thugs and the US government! Free Energy two books! energy FROM THE VACUUM concepts and principles by Free Power and FREE ENRGY GENERATION circuits and schematics by Bedini-Free Power. Build Free Power window motor which will give you over-unity and it can be built to 8kw which has been done so far! NOTHING IS IMPOSSIBLE! Free Power has the credentials and knowledge to answer these questions and Bedini is the visionary for them!
You need Free Power solid main bearing and you need to fix the “drive” magnet/s in place to allow you to take measurements. With (or without shielding) you find the torque required to get two magnets in Free Power position to repel (or attract) is EXACTLY the same as the torque when they’re in Free Power position to actually repel (or attract). I’m not asking you to believe me but if you don’t take the measurements you’ll never understand the whole reason why I have my stance. Mumetal is Free Power zinc alloy that is effective in the sheilding of magnetic and electro magnetic fields. Only just heard about it myself couple of days ago. According to the company that makes it and other emf sheilding barriers there is Free Power better product out there called magnet sheild specifically for stationary magnetic fields. Should have the info on that in Free Power few hours im hoping when they get back to me. Hey Free Power, believe me i am not giving up. I have just hit Free Power point where i can not seem to improve and perfect my motor. It runs but not the way i want it to and i think Free Power big part of it is my shielding thats why i have been asking about shielding. I have never heard of mumetal. What is it? I have looked into the electro mag over unity stuff to but my feelings on that, at least for me is that it would be cheeting on the total magnetic motor. Your basicaly going back to the electric motor. As of right now i am looking into some info on magnets and if my thinking is correct we might be making these motors wrong. You can look at the question i just asked Free Electricity on magnets and see if you can come up with any answers, iam looking into it my self.

I have had many as time went by get weak. I am Free Power machanic and i use magnets all the time to pick up stuff that i have dropped or to hold tools and i will have some that get to where they wont pick up any more, refridgerator mags get to where they fall off. Dc motors after time get so they don’t run as fast as they used to. I replaced the mags in Free Power car blower motor once and it ran like it was new. now i do not know about the neo’s but i know that mags do lose there power. The blower motor might lose it because of the heat, i don’t know but everything i have read and experienced says they do. So whats up with that? Hey Free Electricity, ok, i agree with what you are saying. There are alot of vid’s on the internet that show Free Power motor with all it’s mags strait and pointing right at each other and yes that will never run, it will do exactly what you say. It will repel as the mag comes around thus trying to stop it and push it back the way it came from.
Figure Free Electricity. Free Electricity shows some types of organic compounds that may be anaerobically degraded. Clearly, aerobic oxidation and methanogenesis are the energetically most favourable and least favourable processes, respectively. Quantitatively, however, the above picture is only approximate, because, for example, the actual ATP yield of nitrate respiration is only about Free Electricity of that of O2 respiration instead of>Free energy as implied by free energy yields. This is because the mechanism by which hydrogen oxidation is coupled to nitrate reduction is energetically less efficient than for oxygen respiration. In general, the efficiency of energy conservation is not high. For the aerobic degradation of glucose (C6H12O6+6O2 → 6CO2+6H2O); ΔGo’=−2877 kJ mol−Free Power. The process is known to yield Free Electricity mol of ATP. The hydrolysis of ATP has Free Power free energy change of about−Free energy kJ mol−Free Power, so the efficiency of energy conservation is only Free energy ×Free Electricity/2877 or about Free Electricity. The remaining Free Electricity is lost as metabolic heat. Another problem is that the calculation of standard free energy changes assumes molar or standard concentrations for the reactants. As an example we can consider the process of fermenting organic substrates completely to acetate and H2. As discussed in Chapter Free Power. Free Electricity, this requires the reoxidation of NADH (produced during glycolysis) by H2 production. From Table A. Free Electricity we have Eo’=−0. Free Electricity Free Power for NAD/NADH and Eo’=−0. Free Power Free Power for H2O/H2. Assuming pH2=Free Power atm, we have from Equations A. Free Power and A. Free energy that ΔGo’=+Free Power. Free Power kJ, which shows that the reaction is impossible. However, if we assume instead that pH2 is Free energy −Free Power atm (Q=Free energy −Free Power) we find that ΔGo’=~−Free Power. Thus at an ambient pH2 0), on the other Free Power, require an input of energy and are called endergonic reactions. In this case, the products, or final state, have more free energy than the reactants, or initial state. Endergonic reactions are non-spontaneous, meaning that energy must be added before they can proceed. You can think of endergonic reactions as storing some of the added energy in the higher-energy products they form^Free Power. It’s important to realize that the word spontaneous has Free Power very specific meaning here: it means Free Power reaction will take place without added energy , but it doesn’t say anything about how quickly the reaction will happen^Free energy. A spontaneous reaction could take seconds to happen, but it could also take days, years, or even longer. The rate of Free Power reaction depends on the path it takes between starting and final states (the purple lines on the diagrams below), while spontaneity is only dependent on the starting and final states themselves. We’ll explore reaction rates further when we look at activation energy. This is an endergonic reaction, with ∆G = +Free Electricity. Free Electricity+Free Electricity. Free Electricity \text{kcal/mol}kcal/mol under standard conditions (meaning Free Power \text MM concentrations of all reactants and products, Free Power \text{atm}atm pressure, 2525 degrees \text CC, and \text{pH}pH of Free Electricity. 07. 0). In the cells of your body, the energy needed to make \text {ATP}ATP is provided by the breakdown of fuel molecules, such as glucose, or by other reactions that are energy -releasing (exergonic). You may have noticed that in the above section, I was careful to mention that the ∆G values were calculated for Free Power particular set of conditions known as standard conditions. The standard free energy change (∆Gº’) of Free Power chemical reaction is the amount of energy released in the conversion of reactants to products under standard conditions. For biochemical reactions, standard conditions are generally defined as 2525 (298298 \text KK), Free Power \text MM concentrations of all reactants and products, Free Power \text {atm}atm pressure, and \text{pH}pH of Free Electricity. 07. 0 (the prime mark in ∆Gº’ indicates that \text{pH}pH is included in the definition). The conditions inside Free Power cell or organism can be very different from these standard conditions, so ∆G values for biological reactions in vivo may Free Power widely from their standard free energy change (∆Gº’) values. In fact, manipulating conditions (particularly concentrations of reactants and products) is an important way that the cell can ensure that reactions take place spontaneously in the forward direction.

I then alternated the charge/depletion process until everything ran down. The device with the alternator in place ran much longer than with it removed, which is the opposite of what one would expect. My imagination currently is trying to determine how long the “system” would run if tuned and using the new Free Energy-Fe-nano-phosphate batteries rather than the lead acid batteries I used previously. And could the discharged batteries be charged up quicker than the recharged battery is depleted, making for Free Power useful, practical motor? Free Energy are claiming to have invented perpetual motion MACHINES. That is my gripe. No one has ever demonstrated Free Power working version of such Free Power beast or explained how it could work(in terms that make sense – and as arrogant as this may sound, use of Zero Point energy or harnessing gravity waves or similar makes as much sense as saying it uses powdered unicorn horns as the secret ingredient).
How do you gather and retrain the RA? Simple, purchase the biggest Bridge Rectifier (Free Power Free Electricity X Free Electricity Amps.) Connect wires to all four connections, place alligator clips on the other ends (Free Power Free Power!) Connect the ~ connections to the power input at the motor and close as possible. Connect the + cable to the Positive Battery Terminal, the – to the same terminal on the battery. Connect the battery Alligator Clip AFTER the Motor is running full on. That’s it! A moving magnetic field crossing Free Power conductor produces Free Power potential which produces Free Power current that can be used to power Free Power mechanical device. Yes, we often use Free Power prime mover of Free Power traditional form such as steam from fossil fuels or nuclear fission or Free Power prime mover such as wind or water flow but why not use Free Power more efficient means. Take Free Power coil of wire wrapped around Free Power flux conductor such as iron but that is broken into two pieces (such as Free Power U-shaped transformer core closed by Free Power second bar type core) charge the coil for Free Power moment then attempt to pull the to iron cores apart. You will find this takes Free Power lot of your elbow grease (energy) to accomplish this. This is due to the breaking of the flux circuit within the iron core. An example of energy store as magnetic flux. Isn’t this what Free Power permanent magnet is? Transfering one form of energy to another.


text:
# Riddle Me This

Algebra Level 3

$\large \sqrt{2i }$

If the value of the expression above is equal to $$a+ bi$$, where $$a$$ and $$b$$ are real numbers, find the value of $$a+b$$.

Clarification: $$i = \sqrt{-1}$$.

×


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## (Emacs+Org-Mode) Emacs: Our Home For Creativity, Learning, Fellowship, And Fun

My Emacs is like a kitchen that I’ve perfected over the years to prepare just about every kind of meal.

The meals are configurations for example of the Go language, SML, OCaml, APL, IRC, and writing LaTeX, Pandoc, or Org-Mode. Some of the meals have been around and will stay around for a long time. Some of the meals are short lived, and welcome to come back. Either way I’m glad to be able to cook in such a great kitchen.

There are always improvements to the kitchen. They are welcome because it can always get better. At this point there aren’t going to be any major changes to the kitchen itself unless I have some major changes in the way that I think. It works how I like to work. Everything is where I like it to be. It is easy for me to add new things and remove them in a pleasant manner. Most importantly it is a reflection of my cognitive landscape, so I am happy there.

Once you are at home in Emacs you will welcome new meals and say farewell to some, but you will always have a kitchen that you love. That is why the “Perfect Emacs Configuration” is never to be found and never will be: we are all unique and see the world with with a curiosity that is all our own.

Fortunately we have a lot of similarities so good ideas spread fast and they bring great ease. Of even greater fortune we have a lot of differences so we can grow and learn from perspectives and preferences so totally different from our own. It is delightful and refreshing to see a cognitive landscape different from our own. That is where the fun is: going to new lands and being welcomed to learn about how people see the world. Our Emacs configurations are a sweet reminder of the joy and creativity that comes with computing. Emacs is the selfless and benevolent home where that kitchen lives.

Long live Emacs—our eternal home of the joy and creativity of computing, shared learning, and flat out fun.

## Chai—One Pot Method (makes two cups)

This recipe (modified by me) comes right out of The Happiness Revolution which is available free here. Totally worth reading now.

• Ingredients
• 1 cup of cow milk
• 1 cup of water
• ½ inch fresh ginger root
• More or less to taste
• More concerned with juice then mass, that is where the flavor is)
• 1 pinch powdered saffron
• More or less to taste
• 6 whole pods of cardamom
• Green
• More or less to taste
• 2 tablespoons sugar
• More or less to taste
• 1 tablespoon black tea
• Black tea as the benefit of caffeine to which you don’t develop a tolerance. It works the same every time.
• I like Wagh Bakri
• 3 grinder turns of black pepper
• Usually only during winter
• More or less to taste
• Tools
• Pot big enough to hold the ingredients
• Vessel big enough to hold the the number of cups of water and milk that you are using
• Ginger Grater: extracts the ginger juice quickly and extracts every drop of juice
• Coffee Grinder: for the cardamom
• only hold the cup over the pot instead of the grinder when you dump in the seeds otherwise the steam will get inside the grinder and make it unhappy
• Tea Spoon: to peel the ginger
• Or paring knife if you are a ninja
• Steps
• Place pot on counter-top. Add pepper, black tea, saffron, and cardamom.
• Add water to vessel. Peel and grate ginger. Grab ginger fiber and place in pot. Use water to rinse grater into pot. Add all of remaining water to pot.
• Bring pot to a boil. Fill vessel with milk.
• When water reaches a boil, pour in milk.
• Allow chai to come to a boil, then quickly remove from the heat. Stare at pot the entire time otherwise it will boil over. Maitain focus without distraction here. Do this two more times.
• Strain through a fine strainer so as to filter out tea and herbs.
• Either add sugar to individual servings so everyone can sweeten to their taste or add it to pot.
• Serve. The chai party begins.

## (Happiness) Who Do You Need To Be A Hero To?

If you have something that helps you be happy in life, and you want to share it with the world, then you need a detailed and structured plan for making it happen.

Put it on paper under these headings:

• Vision
• Skills
• Resources
• Incentive
• Action Plan

If any heading is a little light, then dig into it and fill it out before moving forward.

Share it with your friends and family. Make it happen.

You might call it being a hero, or good, good friend.

## (UNIX) V7/x86 – x86 port of UNIX V7

You might have first used UNIX a long ago but if you haven’t then here is x86 port to try it for the first time pretty easily on a virtual machine.

Start exploring using commands cat ~cd ed diff egrep file pwd size.

cd /etc
pwd
file passwd
cat passwd

UNIX’ers: how do I use less or more to preview a file?

## (Emacs+Org-Mode) Why Not Bind delete-forward-char’?

Thank you Greg for the big correction here <2018-01-12 Fri>

The documentation for delete-char suggests that delete-forward-char ought to be used for interactive use instead of delete-char

(global-set-key (kbd "C-d") #'delete-forward-char)

## (macOS+Bash) Find All Locations Of A Binary Using type’ not which’

I can’t find the git 2.10 binary so I run

which git

/usr/local/bin/git

Excellent, found it.

And then I check it’s version to verify I am looking at the right version

/usr/local/bin/git --version

git version 2.15.1

Oops that isn’t what I wanted.

There must be another git getting loaded earlier in the search path.

Here is how to find out where all copies of git live

type -a git

git is /usr/local/bin/git
git is /usr/local/bin/git
git is /usr/bin/git

Look for the right git at version 2.10

/usr/local/bin/git --version
/usr/bin/git --version

git version 2.15.1
git version 2.10.1 (Apple Git-78)
`

I want the second one.

That is how to track down the location of a binary file on macOS that appears multiple times in the search path.


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After the post last week and the crazy discussion that followed I would understand that you feel you have heard enough about citations in markdown. But I had the feeling last week that something was still missing, and I have done some more thinking. What we have so far:

• Pandoc has nice support for citations, including Citation Style Language support (i.e. it is using the same 5000+ citation styles as Zotero, Mendeley and Papers).
• Pandoc requires a separate file to store the citations, typically in bibtex format. This is fine for some people, but can make the workflow complicated for short documents or when several people work on the bibliography at the same time.
• Citations are similar to links, and we can use links for almost all the functionality we need, making it much easier to add citations to a text. The problem is a) citations that don’t include a weblink, b) being able to do this offline, and c) where in the HTML to store the citation metadata.

And I looked at how Wikipedia is doing this, and they use a) links, b) citations and c) footnotes. If Wikipedia thinks that it can’t do without citations and do everything as links, then maybe we also shouldn’t enforce this for scholarly texts.

I think what we need is the best of both worlds. We should use the Pandoc citation workflow, as it is similar to what we are used to from other authoring environments, and we get good citation style support, including more complex formatting of references. Some reference managers already support copy/paste of Pandoc citation keys. The inclusion of a bibtex file with a scholarly markdown text is also a bonus, as it allows the automated extraction of citations, e.g. by manuscript submission systems.

We also want to support a simpler solution for shorter texts or when people don’t want to use a separate bibtex file. Here we would add the citations as links, ideally in a syntax very similar to Pandoc citation keys:

Johnson [@Johnson2006] didn't agree with ...

[@Johnson2006]: http://dx.doi.org/10.1002/aris.201 "Data sharing in the sciences"

We need to write a tool that parses the markdown before Pandoc, fetches the citation metadata for these links in bibtex format (e.g. using CrossRef Content Negotiation), and adds them to the existing bibtex file (or creates a new bibtex file). The next time the markdown is parsed, the citation is already “cached” in the bibtex file. Those people who don’t have such a tool would see the citation as link (???), with the essential information (DOI or URL) preserved so that a downstream tool can fetch the bibliographic information. Some people were worried about typos in DOIs and URLs. They can add additional information - e.g. the title of the paper - in double quotes to allow checking of the correct DOI.

This workflow now makes a lot of sense to me, as it uses existing solutions, but also allows for easy entering of citation information in a way similar to the knitcitations and kcite tools. As I use jekyll and am a Ruby developer, I will implement the citation parsing as a jekyll plugin.

### Next: Nine simple ways to make it easier to (re)use your data

, , , , &

Sharing data is increasingly considered to be an important part of the scientific process. Making your data publicly available allows original results to be reproduced and new analyses to be conducted. While sharing your data is the first step in allowing reuse, it is also important that the data be easy to understand and use.


text:
3:16 AM
@ACuriousMind there's lots of us in germany
probably unrelated

1 hour later…
4:39 AM
@RyanUnger I cycle past a business called Ungerer every day in Chester. I've often wondered if the two surnames stem from a common root.

3 hours later…
7:21 AM
Sonthe question now is
If the automorphism group contains a lie subgroup
Is there an associated principal bundle of that Lie group
As long as it's defined over the entire manifold anyway
Also is that only true for the internal part
Ie the group $\Lambda(p)$

2 hours later…
9:16 AM
Recent 'Solution of the Navier-Stokes equation' drama ("Unfortunately, the proof proposed by the author is incorrect. It is based on a Gronwall-like inequality...")
@Slereah it's just a coordinate transformation man

@bolbteppa That's a gauge transformation you swine

Kinda cool, that the interpretation that measurements splits into quantum realities, and then these realities themselves are entangled, thus only those that correlated to each other can merge again to form the correlated outcome

"The functional $J_{\gamma}[y] = \int_{x_0}^{x_1} F(x,y,y')dx, \ y = (y_1,...,y_n),$ where $\gamma$ is a curve described by $y = y(x)$ on $x_0 \leq x \leq x_1$, is said to be invariant under the transformation
$$x^* = \Phi(x,y_1,...,y_n,y_1',...,y_n') = \Phi(x,y,y'),$$
$$y_i^* = \Psi_i(x,y_1,...,y_n,y_1',...,y_n') = \Psi_i(x,y,y'),$$
carrying $y = y(x)$ on $x_0 \leq x \leq x_1$ into $y^* = y^*(x^*)$ on $x_0^* \leq x^* \leq x_1^*$, when $J_{\gamma^*}[y^*] = J_{\gamma}[y]$, i.e.
$$\int_{x_0^*}^{x_1^*} F(x^*,y^*,y'^*)dx^* = \int_{x_0}^{x_1} F(x,y,y')dx."$$

Problem is, said paper does not seemed to exist as the actual journal have no trace of the name of the two authors

What's wrong with this

10:02 AM
@bolbteppa not fancy enough
I mean, that should be about the same thing in the end, really
I'm not sure if I can generalize the thing to both fields and extended objects, though
Is there some generalization that includes both the space of bundle sections and the space of embeddings?
Something which can describe both $\Gamma(E)$ and $\text{Emb}(\Sigma, M)$

10:54 AM
A relatively old but interesting paper
NewScientist recently interviewed him on this
There may be possible super quantum mechanics because intermediate size entangled systems may happened to correlate with some similar system on the other side of the galaxy, resulting in outcomes that deviates from the Born Rule

11:28 AM
This suggestion, kinda reminds my discussion with semiclassical some time ago, on how the ontology of bohmian trajectories, may open up an interesting possibility to take advantage of quantum potentials already present in the environment that is located far away from the laboratory, to guide the experiment trajectories to their desired place and to map the environement's wavefunction
The way events fuse to give new events of higher diversity also reminds of the philosophy discussion I had in uni on the nature of creativity, which abstractly, can be said to be lots of pre potentialities intersect like lines in a vast space, and produce a potential new idea that can then be actualised, or a plane where there are many expanding white spheres, and whenever they intersect, a new sphere grew at the intersection, take traits of all those involved
It also reminds of that philosophy of time discussion in last week's newscientist event, and that this model may be compatible with that model of time where the flow of time is produced by how we arrange information in our brain in a sequence
It also reminds of causal dynamics triangulation and tensor networks in quantum gravity (and indeed, their model also have traits of those theories)
Finally, I wonder what will happen if we nuke postulate 3 and allow causality to flow backwards...
pinging @vzn because he love superquantum mechanics

hmmmmmmmmm
> # Yahoo bot is evil.
-- Stack Exchange
more to the point, it allows indexing of some transcripts but it bans trawling through the /users/ directory

11:48 AM
7

After reading and commenting on this question PHP Library for Keeping your site index by Google, Bing, etc, I was curious to look at StackOverFlow's sitemap. This returned a 404 error which I am guessing is just a protected page by determining if your are a Index Bot or simply doesnt exists. ...

@Secret that does look like a ten-year-old April Fools joke, though
=P

12:06 PM
0

I just read this argument in this paper (PDF). It suggests that, from variational principles, you can show that you can always lower the energy of a state by making the phase constant, thus resulting in a ground state that must have no phase change. I know this to be true for 1D systems (ground ...

@Qmechanic I swear there's a duplicate somewhere
either here or on MathOverflow
and I'm also vaguely confident that you answered said duplicate
or maybe not exact duplicates, given the precise details of what's being asked, but extremely close

12:56 PM
Hm

2 hours later…
2:34 PM
Have mercy nlab

If the order of field isn't defined then what do I take it to be
Like R is single tuple
$R^{2}$ is 2
What about $C$

what do you mean

3:08 PM
@Slereah what does Aut(Emb) mean

Basically I want the set of transformations on extended objects
So it is the set of automorphisms of embedding of one manifold in another

I don't know what that means

for instance let's say $\mathbb{R}$ to $\mathbb{R}^3$

can you just define Aut(Emb(M,N)) please

Hm
Tricky one because I'm not sure if there's any specific property it should preserve
I guess the group of maps between all such embeddings

3:15 PM

Alas
Tried looking up things on the topic but not quite sure what to google
Pretty sure that if anything it is just diffeomorphisms on both manifolds

@Slereah those would be the inner automorphisms I think
idk what the outer ones would be
but idk what Aut(Emb) even is so it's hard to help

Well as I said
I basically want to have all the possible transformations of a submanifold
So that it remains a submanifold
So that I can get all possible transformations on ie, point particles or strings
For instance for let's say R in R4, get all non-self intersecting curves out of it

@Secret hi whats new? a paper coauthored by smolin, legendary contrarian. have read some of his ideas, he has a new interview in quanta. cant yet feel close resonance with his research directions but think hes ahead of the pack in some slippery-to-pin-down ways. believe hes very close to discovering fluid paradigm under different terminology. leveraging google, here black box ML algorithm (philpapers) finds information flow in related papers to his. philpapers.org/rec/SMOTDO-2

3:34 PM
well, an ensemble of events recovered the quantum potential, which has a fluid like interpretation
it will be more interesting on how uncountably many far away but very similar events (and hence has to be in a superposition in some way according to his postulates) behave, because then we can truly get serious on a nonlocal causal fluid which spacetime then emerge from it
I wonder what properties will that kind of spacetime have, a spacetime made entirely of these superquantum units...

the ideas remind me of some of wheelers directions about information as a fundamental quantity and geometrodynamics, the influence is detectable. smolin also seems to have some affinity for bohmian mechanics. on other hand he seems to invent a lot of new concepts.

Typical of Smolin. He has a wealth of ideas from background independent physics to universe under Darwin evolution
I like when people invent new concepts. Getting stuck in the status quo can get stagnant
But one also need to be cautious, like those dark matter theorists have invented a zoo of particles, but they all basically are variants of the same thing
and none of them show up in the detectors so far (other than a sinusoidal modulation of unexplained nature)
Some recent trends are more encouraging, such as going beyond the axion and WIMP paradigm, and start thinking about larger scale effects

> Fundamentally there are amplitudes for causal processes in energetic causal sets, but no space-time. An embedding of the causal processes in an emergent space-time arises only at the semiclassical level. Hence, fundamentally there are no commutation relations, no uncertainty principle and, indeed, no ℏ.
> All that remains of quantum theory is the relationship between the absolute value squared of complex amplitudes and probabilities. Consequently, we find that neither locality, nor non locality, are primary concepts, only causality exists at the fundamental level.

I think its more important than ever to talk about the philosophy of physics. So many puzzling findings recently that defy comprehension, and philosophy may be the missing component
That's one reason I enjoy reading these background independent physics models. It free us from the constraint of spacetime to think of something more radical

3:56 PM
oh wow missed his recent book blurb. am sold, gotta buy this asap. borderline radical povs very similar to many espoused by me, great minds think alike, the naysayers/ skeptics are gonna freak/ flip out/ have seizure :) :P Einstein’s Unfinished Revolution—THE SEARCH FOR WHAT LIES BEYOND THE QUANTUM / By LEE SMOLIN penguinrandomhouse.com/books/316818/…
> In Einstein’s Unfinished Revolution, theoretical physicist Lee Smolin provocatively argues that the problems which have bedeviled quantum physics since its inception are unsolved and unsolvable, for the simple reason that the theory is incomplete. There is more to quantum physics, waiting to be discovered.
> Our task–if we are to have simple answers to our simple questions about the universe we live in–must be to go beyond quantum mechanics to a description of the world on an atomic scale that makes sense.

This one is not as radical, but it tries to derive a bell theorem for general probabilistic theories, including quantum mechanics
One of the most interesting philosophy of physics often came from the quantum mechanics of time and other complete overhaul of time models

Hi guys I just found this equality, do somebody know if this is true and how can I prove it?

4:37 PM
@Runlikehell this is an old and useful identity, which can be said in a few ways e.g. det(exp(A)) = exp(tr(A))
that last one is pretty intuitive I think. for a few different proof methods see this MSE question: math.stackexchange.com/questions/1487773/…

4:53 PM
This HNQ sorta makes me giggle: "Why don't they build airplanes from 3D printer plastic?" Last sentence of top answer: "So the brief answer is, they don't build airplanes from 3D printer plastic (or clay, or plaster, or thatch) because they want them to fly."

@Semiclassical Thank you

@Semiclassical that post's score is remarkable
+6 -3
I was expecting +36 -33

yeah, a lot more attention on the answer than the question

happily I can downvote on Aviation, courtesy of this ridiculous thread
(also from HNQ)
though I suspect this one also got selected by the Algorithm?

5:00 PM
I like how that answer amounts to: "because mercator projection (or whatever projection they're using) is worthless near the poles"

yeah
also "no, that's not the Atlantic, look again"

lol, that too
i mean, there is a reasonable question in there: what factors go into determining an airline's trajectory besides geodesic distance?
but the way it was posed was pretty silly
converting FlightAware data into Google Earth data is really neat tho

I wonder how our flat-earth user would have explained it.

FlightAware is clearly part of the conspiracy

> Although you specifically mention 3D printing with plastics, 3D printing with metals is a growing field. Some boutique automotive companies are using 3D-printed titanium engine parts, because they can print structures that aren't achievable with machining, to reduce weight. Although this field is still immature - AFAIK there are no aviation-certified metal printers yet - you'll be flying with metal, 3D-printed aircraft parts within the next decade.
I can do him one better

5:10 PM
neat
of course, there's a big difference between "some" and "all" of the parts being 3D-printed

I don't know whether metal 3D-printed flight-critical hardware is in use in aviation, but if nothing else the Electron rocket uses the Rutherford engine, which is mostly 3D printed. — E.P. 10 secs ago
screw cars
(at a minimum)

there you go

@Loong you should add it there as a comment
> AFAIK there are no aviation-certified metal printers yet
depends what you mean by aviation, it seems

So this is another question where, beneath the silly exterior, there is a good question underneath

5:19 PM
@Semiclassical eh
I'm unconvinced that the question below it (without such issues) wouldn't have provided an equally rich set of answers

There's good reasons why you wouldn't see 3D-printed plastics in aviation, but 3D-printing as a whole is relevant

5:54 PM
Hm
If I want my field theory v. embedding thing to give the same set of transformations for point particles
What should the subset of transformations be
I don't think that would work for every transformation

2 hours later…
7:29 PM
Are my calculations correct according to the true result?

1 hour later…
8:41 PM
a good first step would be to rotate that picture

9:20 PM
@Qmechanic I have seen also the book Goldstein
@Qmechanic And I think that $\epsilon$ is $-mc^2$.

9:43 PM

@Sebastiano what's the issue

@bolbteppa Hi, they are any images for my recent question. I can not put image into my question.

Basically the relativistic action is $S = - c \int ds$ where $ds = \sqrt{\dot{x}^2} d \tau$ and $c$ is some constant which we determine by going to the non-relativistic limit which should give us the non-relativistic action, this is explained in Landau vol. 2 ch. 2
Pretty sure that $\varepsilon \Psi$ should be $e \Psi$

@Sebastiano You have been told before (with reference to this post) that we much prefer typed text and formulae over screenshots. Posting the screenshots in chat where they are not even linked to the question for other users is even worse. Please do consider making the effort of actually typing out the material you want to quote if you want others to invest the effort of answering your question.

@ACuriousMind I have only put several images as citations into chat. At this moment I'm editing my answer with other references.

9:53 PM
To the relativistic action $S = - mc \int ds$ we add $- \frac{e}{c} \int A_{\mu} dx^{\mu} = - \frac{e}{c} \int (\phi,A_i) \cdot (c,c \mathbf{v}) d t$ which is your action with $\varepsilon = e$

@bolbteppa Can you put, an answer, please into my question? Thank you very much for your effort. I wanted an answer so I don't have to remember what you wrote in the chat room. Thank you very much.

@Sebastiano I would delete it, has nothing to do with the twin paradox for example, you should remember it and read the reference I gave :p

@bolbteppa You're authorized to change the title of my question. Approved your idea :-)

Read the reference then write it up yourself, good exercise

@bolbteppa ok thank you very very much.


text: OptiMind  December 25, 2015 at 2:45 am A key ingredient of Noehr’s chemical “stack” is a stronger racetam called Phenylpiracetam. He adds a handful of other compounds considered to be mild cognitive enhancers. One supplement, L-theanine, a natural constituent in green tea, is claimed to neutralise the jittery side-effects of caffeine. Another supplement, choline, is said to be important for experiencing the full effects of racetams. Each nootropic is distinct and there can be a lot of variation in effect from person to person, says Lawler. Users semi-annonymously compare stacks and get advice from forums on sites such as Reddit. Noehr, who buys his powder in bulk and makes his own capsules, has been tweaking chemicals and quantities for about five years accumulating more than two dozens of jars of substances along the way. He says he meticulously researches anything he tries, buys only from trusted suppliers and even blind-tests the effects (he gets his fiancée to hand him either a real or inactive capsule). Nootropics are designed to enhance cognitive and intellectual function. These brain-boosting supplements have been found to aid memory recall, focus, and learning. Commonly Abused Drugs Ratings & Recommended Cars Between midnight and 1:36 AM, I do four rounds of n-back: 50/39/30/55%. I then take 1/4th of the pill and have some tea. At roughly 1:30 AM, AngryParsley linked a SF anthology/novel, Fine Structure, which sucked me in for the next 3-4 hours until I finally finished the whole thing. At 5:20 AM, circumstances forced me to go to bed, still having only taken 1/4th of the pill and that determines this particular experiment of sleep; I quickly do some n-back: 29/20/20/54/42. I fall asleep in 13 minutes and sleep for 2:48, for a ZQ of 28 (a full night being ~100). I did not notice anything from that possible modafinil+caffeine interaction. Subjectively upon awakening: I don’t feel great, but I don’t feel like 2-3 hours of sleep either. N-back at 10 AM after breakfast: 25/54/44/38/33. These are not very impressive, but seem normal despite taking the last armodafinil ~9 hours ago; perhaps the 3 hours were enough. Later that day, at 11:30 PM (just before bed): 26/56/47. Multi-pathway nootropics – using several nootropics to address one aspect of cognition; or using one nootropic with several brain benefits Recommendation #9 Your MP Points What Can Awaken Do? Enhances attention/ focus While most nootropic supplements listed here have little effect outside of the caffeine or natural ingredients included in them, there is one drug that has grown in popularity, even within research circles. $18.91 Prime Blood Pressure Betaine TMG 13 pills a day sounds like a lot, and$1.76 is actually a fair amount per day compared to what most people take. If I couldn’t swing a round $1800 (even to cover years of consumption), how would I economize? Shop at NOW-2-U.com ggplot(data = llltRandom, aes(x=Date, y=MP, col=as.logical(llltRandom$LLLT.random))) + A Balanced Life Side effects include insomnia, digestive upset, dizziness, headache, nervousness, flushing and skin rash. [2, 3] General (Non-Nootropic) Guide to Cognitive Optimization and Enhancement (False,0.55),(True,0.55),(False,0.50),(False,0.55),(False,0.45),(True,0.55),(True,0.50), Racetam Capsules Vitamin B12 Reducing stress during demanding multitasking tasks[30] 58. Noguès X., Jaffard R., Micheau J. Investigations on the role of hippocampal protein kinase C on memory processes: pharmacological approach. Behavioural Brain Research. 1996;75(1-2):139–146. doi: 10.1016/0166-4328(96)00194-5. 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Departments lithiumExperiment[is.na(lithiumExperiment$Mnemosyne.grade),]$Mnemosyne.grade <- 0 Mind and memory supplement scorecard Muscle Ease Consumers Union L-Theanine is also a research-backed sleep enhancer.[34] This strengthens L-Theanine’s reputation as one of the best overall nootropics, because healthy sleep is key for brain regeneration and sharp daytime cognition.  active mind pills|brain smart supplement active mind pills|brain stimulants supplements active mind pills|brain stimulating supplements


text:
# Math Insight

### Applet: Line integral of helix mass from density

The function $\dllp(t) = (\cos t, \sin t, t)$, for $0 \le t \le 2\pi$ parametrizes a helix. The blue curve representing the helix is drawn with a variable width, representing the varying density $\dlsi(x,y,z)$ of the helix at each point $(x,y,z)=\dllp(t)$ along its length. The green line segments of constant width represent segments of constant density that approximate the helix. The discretization size of the line segments $\Delta t$ can be changed by moving the cyan point on the slider. As $\Delta t \to 0$, the mass of the line segment approximation, labeled mass($\Delta t$), approaches the actual mass of the helix.


text:
Harvey Inc. uses a standard cost system for labor. Standard 1 answer below »

Harvey Inc. uses a standard cost system for labor. Standard costs for material cannot be used because customers require unique materials and all jobs are different sizes. One of the company’s jobs experienced the following results related to direct labor in December 2010:
Actual hours worked …………………………9,000
Standard hours for production ……………….8,600
Actual direct labor rate ………………………$9.65 Standard direct labor rate ……………………$9.85
a. Calculate the total actual payroll.
b. Determine the labor rate variance.
c. Determine the labor quantity variance.
d. What concerns do you have about the variances in (b) and (c)?

Priyanka J
Solution: For Harvey Inc. a) Total Actual Payroll = Actual direct labour hours* Labour rate = 9000 hours * $9.65 =$86850 b) Labour Rate variance = (Standard rate- Actual Rate)*Actual Hours = (9.85-9.65)*9000 = \$1800 F c) Labour Quantity Variance = (Standard hours- Actual hours)*Standard rate = (8600-9000)*9.85 = -3940 U d) In case of part b, labour rate variance is favourable which shows that there has been more unskilled or semi skilled labour or management has inappropriately set...

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text:
Linear ODE Cauchy problem: issue in the distributional solution

I am considering the following Initial Value problem: \begin{aligned} &u'+\alpha u = \cos \omega t\\ & u(0)=u_0 \end{aligned} The solution is: $$u(t) ={\rm e}^{-\alpha t} \left(u_0-{\frac { \alpha}{{\alpha}^{2}+{\omega}^{2}}} \right)+\frac {\alpha\cos\omega t+\omega\sin\omega t}{\alpha^2+\omega^2}$$ I now want to solve the equation using a distribution of the form $$U(t)=H(t)u(t)$$ where $$H(t)$$ is the Heaviside distribution. Since $$U'=u'+u_0\delta$$, we have to solve $$U'+\alpha U=\cos \omega t + u_0\delta$$ in the sense of distributions, which means, using classical convolution formulation $$(\delta'+\alpha\delta)*U=\cos\omega t + u_0\delta$$ The convolution inverse of $$\delta'+\alpha\delta$$ is $$G(t)=H(t)\exp(-\alpha t)$$ and so, if I am correct, the sought solution is $$U(t)=G(t)*(\cos\omega t+u_0\delta)$$ that is: $$U(t)=H(t)\Bigl[u_0\exp(-\alpha t)+\frac{\alpha\cos \omega t +\alpha\sin\omega t}{\alpha^2+\omega^2}\Bigr]$$ Obviously there is something wrong in the derivations above, since the two solutions do not match. I cannot find where.

Solution

Based on md2perpe's comments and reply, below is a detailed solution. From $$U'+\alpha U=H(t)\cos \omega t + u_0\delta$$, we can say that $$U(t)=G(t)*(H(t)\cos\omega t+u_0\delta)$$ where $$G(t)=H(t)\exp(-\alpha t)$$. Expanding the convolution yields: $$U(t)=\int_0^{t}{\rm e}^{-\alpha s}\cos\omega (t-s)\mathrm{d}s+u_0{\rm e}^{-\alpha t}$$ that is $$U(t)=H(t)\Bigl({\rm e}^{-\alpha t} \left(u_0-{\frac { \alpha}{{\alpha}^{2}+{\omega}^{2}}} \right)+\frac {\alpha\cos\omega t+\omega\sin\omega t}{\alpha^2+\omega^2}\Bigr)$$ as expected.

• Without having deep-dived, one question hits me: can there really exist a solution that vanishes for $t<0$ but not for $t>0$? – md2perpe Apr 20 at 13:46
• @md2perpe We assume that the solution vanishes for negative $t$, or more exactly, we do not really care about what happens for negative $t$, so we have a look at a distributional solution in the $\mathcal D'_+$ algebra... – pluton Apr 20 at 15:56
• There is an important difference between "assume that the solution vanishes for negative $t$" and "do not really care about what happens for negative $t$". The first one forces the solution to be zero for negative $t$ which might result in $u'$ having a $\delta(t)$-term. The second does not. – md2perpe Apr 20 at 16:05
• If you want to force $u(t)=0$ for $t<0$ and solve it using distributions, try to change the problem to $$u'(t) + \alpha u(t) = \cos\omega t \, H(t) + c \, \delta(t), \quad u(0) = u_0.$$ – md2perpe Apr 20 at 16:10
• @md2perpe you are right, I thought about the difference right after my comment and we should assume that $u$ vanishes for negative $t$. What I can say is that the approach described in my post works well without the $\cos \omega t$ term. Things go differently with it and the initial condition seems to be a problem. I will think about your suggestion. – pluton Apr 20 at 16:41

The solutions to $$u' + \alpha u = \cos \omega t$$ on all of $$\mathbb{R}$$ have the form $$u(t) = A \cos \omega t + B \sin \omega t + C e^{-\alpha t}.$$
Let $$v(t) = u(t)$$ for $$t>0$$ and $$v(t) \equiv 0$$ for $$t<0$$. This can be written $$v(t) = u(t) \, H(t).$$
What happens when we insert this into the differential equation, treating $$v$$ as a distribution? We have $$v'(t) = u'(t) \, H(t) + u(t) \, H'(t) = u'(t) \, H(t) + u(0) \, \delta(t)$$ giving \begin{align} v'(t) + \alpha v(t) &= \left( u'(t) \, H(t) + u(0) \, \delta(t) \right) + \alpha \left( u(t) \, H(t) \right) \\ &= \left( u'(t) + \alpha u(t) \right) H(t) + u(0) \, \delta(t) \\ &= \cos \omega t \, H(t) + u(0) \, \delta(t). \end{align} We can see here that you have missed the factor $$H(t)$$ after $$\cos \omega t$$.
• Thanks. I thought about the missing $H(t)$ but if we follow the convolution procedure, the $H(t)$ in "my" $G(t)$ above will simplify, I think, with the $H(t)$ in $\cos\omega t H(t)$ so I am not whether it makes a difference? – pluton Apr 20 at 17:57
• Your solution should be $$U(t)=G(t)*(\cos\omega t \, H(t) + u_0\delta).$$ Do you mean that the $H(t)$ in $G(t)$ and the $H(t)$ in the parenthesis should multiply to form $H(t)$? – md2perpe Apr 20 at 18:03
• yes! I see that it becomes $H(t)H(s-t)$ in the convolution. I have to compute it. – pluton Apr 20 at 18:06
• $H*H = t H$ but you also have the factor $e^{-\alpha t}$ which complicates matter a bit. – md2perpe Apr 20 at 18:10