C - Science topic

I have a calculator with models Casio Fx-9860.I want to create my own lesson formulas as separate menus,For example, I would like to create a menu for the fluid mechanics course and a separate menu for the thermodynamics course.

For example, the user selects the fluid mechanics lesson menu. Choose one of the fluid mechanics lessons formulas from the formulas in the menu

When we select the formula, the calculator takes input from the user and solves the calculator.

Applications are installed on the calculator that have format ( .g1a)

I guess the programming and formula for this calculator has been done with common languages like C or Python because it is designed for this calculator, lots of games (available on YouTube)

Someone can help me to develop a program that has a separate menu?

Does anyone know in what language the formulas were written and how the code was converted to format?

https://www.youtube.com/watch?v=wrPEFUGW_l8

Thanks

I want to know more about their papers through the program, can someone write them in C or JAVA or Python?

I have Pandas DataFrame and Numpy.ndArray

I want to select DataFrame elements based on values contained in Numpy.ndArray

Eg:

L is Numpy.ndArray values

`L=array([2,2,2,1,1,1])`

P is Pandas dataFrame which has many columns of type Numpy.ndArray

P's 1st columns is

`array(['A','B','C','D','E','F'])`

Result expected

two different columns

`['A','B','C']` which is corresponding to 2 value

`['D','E','F']` which is corresponding to 1 value

can anyone suggest the best way to find the accurate execution time of math.h library functions such as sqrt(), log(), log10(), sin(), cos() e.t.c?

A colleague just does not understand how come I can be sure about c-global retrieved (which is traditionally thought to have been disproved in 1907).

My best pertinent paper (http://www.ptep-online.com/2015/PP-43-09.PDF) does not convince him.

Who has any advice to offer?

March 21, 2020

Example : Variable B & C together form A. To measure B we have reflective scale but C can be measured only with formative scale. 

Please provide any reference, if you have

For the model refer to the attachment 

If table is like can we draw venn diagram by this input?

variable          value r1               value r2

a                        20                         45

b                         10

c                          39                        1

d                                                      37

e                            98                     27

Hello everyone,

which ways could I use for obtaining data about colour of every pixel in image which has .jpg or .png formats? In the end I want to get .txt file with numerical values of colours in the RGB palette to download it to FPGA by UART. If you know better methods to do this, I will be glad to learn them.

Thank you in advance.

Sometimes in order to gain better performance in terms of execution time, inline assembly within source code is used. For example, it is possible to write assembly code inside C code to manipulating values stored in registers. Is there a way to avoid using inline assembly inside source code? or an alternative way in this context?

While working on matlab to C conversion, I have encountered a problem which involves result mismatch. The function I've been trying to validate is an SVD function with its corresponding matlab built-in function. The result that is obtained from the vector of singular values (the last n by n matrix) in C implementation produces a result with column mismatch as compared to its corresponding matlab built-in function. In some of the cases the obtained result  produces opposite signed values as well.

I have attached the c implementation, I kindly ask for your cooperation in pinpointing the problem which could help me find a solution.

Dear all,

This forum has been created to provide a scientific environment in Researchgate for all of those who are interested in doing research on the context of RPL in Internet of Things (IoT) networks. Through this forum, the members could discuss about their previous RPL related studies and introduce them to others, and also to share their latest discoveries, papers, and probable ideas and more importantly to provide their experience to the newly students who want to spend time on studying the existing challenges in RPL. The students who have decided to work on this topic can join this forum and ask their questions and also to get others' opinion on their current work. There exist different types of challenges for publishing a paper from getting the raw idea, and its implementation via off-the-shelf simulation tools, to submitting the final manuscript. Here in this forum, the members will try to solve these challenges as much as possible and also try to answer the questions and help each other to enhance the observability of the existing studies. Further more, members can inform others about the up coming conferences, events, and journal special issues to further provide a comfort zone for those who are attracted to this field of study.

I hope this forum will make the research on this field more interesting and easily.

I am attempting to implement an atmospheric boundary layer in a 3D fluent simulation using a UDF. The UDF is proven to work in a 2D simulation, however approximately 10 hours into a transient 3D solution using 16 cores, fluent crashes with the only log give being a segmentation fault. I am suspicious that something is going wrong with the parallel nature of the solver, however I can't see any issues with my code - nor can I see any issues that would result in a crash 10 hours in, where the code is not time dependent.

For somebody who already knows some programming skills and languages, what are the best and fastest strategies to master other programming languages?

I read that Tiny OS uses nesC language to build an application whereas Contiki OS uses C-language.

I am just starting to make a project utilizing IRIS motes and my application require multiple arithmetic operations and looping statements. I am familiar with C-language but nesC would be completely new for me (I guess) as its an extension to C-language.

So which platform will be more suitable for such application.

Hi,

For compiling a C code, I am using MinGW64 compiler(c) and made following code in command line.

The error is presented in attached picture.

Can anyone help me for understanding the problem?

Any suggestion will be very appreciated.

The Best,

Azade

I am looking for different questionnaires based on Bloom Taxonomy (Affective, Cognitive and Social domains) to assess the learning of computer science student in CS1 courses(such as intro to programming class with java or c or python).

Hello,

I have a strange bug in my code involving the use of FFTW3. I already wrote the qeustion on Stackoverflow: https://stackoverflow.com/questions/53518451/why-is-fft-of-ab-different-from-ffta-fftb

Please, if anybody have some time to spare, could you have a look?

Thank you very much!

I am a researcher of materials science and metallurgical engineering. I am interested to work with atomic level and electronic modeling of the structure and properties of materials,materials informatics and simulation in future. Currently i am learning Python. I have basics of C and MATLAB . What will be the useful programming languages to learn for me?

As we know, the ptrace system call is the most powerful system call in all unix-like systems. All debugging software use ptrace for monitoring and manipulating another process, i.e. tracee. Using ptrace, we can track read/write system call in the tracee process. I ask, can we use ptrace in order to monitor the tracee and notify the tracer only when the tracee executes a branch instruction? Is this possible? if not, can we notify the tracer when a specific instruction at a specific address is executed?

Advance thanks

The possibility of sequencing of short primers

temperature is affecting on the mechanical properties such as strength 

Hi

Please, how can we make a new operating system ?

Is the method to bring some developers with strong background in theoretical operating system operations and then they should learn from the source codes from another operating systems such as Linux various versions. Then, you can write your operating system and then testing it with ethical hackers to fix the security issues. Then, you can deploy it for some users as testing version. Then, it is validated to be used.

Please, any help for developers to do this than talking alot in useless things.

Thanks

Osman

Is there a A* implementation for nvidia gpus? Or a Library for HPC stuff on GPGPUs at-least? Some real life parallel algorithms implemented on them would be good too.

I was asked to supervise my junior in a small project about Chick hematology, because I am new to the topic I have several questions to ask :

1. My juniors are planning to see the garlic oil effect on the chick's white blood cell counts, is it possible to apply oral gavage on chick as the enteral administration method?

2. Is there any suggestion on substance that affect overall blood cell count that doesn't need oral gavage administration like syringe usage ? we are prohibited from using heavy metal

3. If you have any reference about chick hematology-related research please let me know

Thank you

I used 27F and 1492R primers to amplify bacterial 16S rDNA from intestinal digesta, cycling conditions include 1) 94 C for 3 mins; 2) 40 cycles of 94 C for 30s, 55 C for 30s, and 72 C for 1 min; 3) 72 C for 10 mins 

After the PCR, the Nanodrop concentration of those PCR products were around 750 ng/ul. But after purification using the Invitrogen PCR purification kit, the product concentration was down to only 50 ng/ul. Is this normal?  When I used the Qubit to quantify dsDNA, the concentration became around 15 ng/ul. Was this concentration too low? 

I want to use the purified PCR product as my standard to build standard curves to quantify other bacteria (eg, Lactobacillus) concentration from gut content. 

Thanks for sharing your thoughts or suggestions in advance!

If we take C*C on same time iteration we have penta-diagonal matrix where each and every element of matrix is penta-diagonal matrix ? and If we consider C(j)*C(j-1).it's become linear ? 

If we have two inputs x1 increases linearly from 0 to 10 and x2 from 0 to 1, and we need the output x3=x2 for x1<5, and for x1> 5 we need x3 to keep the last value at x1=5. All this in C-block.

If I put a counter and a matrix to keep the values of x3, C-block starts counting every time step. 

If you could help, I appreciate your time and effort, 

Is there any source code in C/C++ to evaluate strings like eval() in Matlab and Python?

I have introduced a Triangular slot on patch... i have got the eq. ckt of triangular patch ( R L C in parallel)..but not getting of triangular slot. can anyone suggest the equivalent (in terms of RLC) for slot.

Thanks

Nitin

Hi there,

  Is there any scientists who are doing some researches on exosomes and know a good way to store the isolated exosomes? Basically, we store the exosomes with PBS in -80°C, but we are afraid that the exosomes will be distroyed if stored in  -80°C. Therefore, I am wondering if there are some good ways for the storage of exosomes, such as a specific buffer or something like that?

Many thanks!

Hi,

I have the Thermo Scientific HAAKE viscotester C, L-Version spindles, Type 399-0301, Serial No. 1110301006. I used it to measure the viscosity of different liquids using different spindles but at the same rpm. What is the conversion factor to calculate the viscosity of the  different fluids since I used different spindle for different liquids. Kindly assist me with the conversion factors to calculate the viscosity depending on the spindle used.

Thank you for your anticipated assistance.

I have an instrument for which I colect data for the scales A and B. My final score it will be the scale C, which is a difference between A and B.

For the validation process, shoud I include the scales A and B, or only scale C?

If you have any examples for this, please let me know.

Thank you!

What is the funtion of C/N ratio or organic matter conent in determing the presence of a plant?

I am looking for a library to be integrated in LabWINDOWS CVI.

I need to assign a structure that has a Cl but my 1D and 2D aren't helping much.

I have tried PGMEA at 100°C for an hour while stirring but nothing happened, my product didn't get dissolved at all. However the same method with PMMA 996000 and PS 280000 worked just fine.

Polymerase X has a half time of y hours at 95°C and z hours at 99°C

Hi all

During hot press I am facing major problems in EPDM composites fabrication. Mixing temperature: 190 degree C for 15 minutes and hot press 200 degree C,. After the hot press, the EPDM cross composite material is sticking with the PI sheets placed up and down of the mould. How to get rid of this problem?. Does anybody have any suggestion?. I haven't added DCP. Is it because of absence of DCP in the cross composites? if yes, Can let me know what is right time to add DCP during mixing and at what temperature?

Regards

I have already tried alternatives with meat and gave us marvelous results as the meat stayed intact for 15 days at 4 C.

I call on  the assistant of all researcher in the site to help out with the article of "Jones, M. C. (2000). on A skew t distribution."

I have a complex metallic Alloy (Al-Cu-Fe) sample that is amorphous (solid and liquid) at 800'C which crystallization happens during the cooling process at 650'C. Can anyone help me to explain what is the reason behind this phenomena?

How can i calculate the thermal limit capacity of transmission line (data known with me (R, L, C ) and voltage rate in my work?

Since it's the end of the semester just want to know. Some of my colleagues won't round the final average up (79.8 is a C). Others, like myself, will round up to a B.  What do you do?

Unfortunately, I had to stope expression process for about 5 months and after this delay time I had to again to do some change in expression conditions I mean against before I used 25◦C to participate bacterial suspension. But after purification step, there was no band in SDS PAGE. I don’t know what is the wrong? Is this possible that this change in centrifugation temperature caused I lost my protein? My protein is HIV-1 Tat and Expression temperature is 37◦C for 4 hours and I use BL21DE3 and PET28(a).

Hello,

Did anyone ever asses adipogenesis using the adiponectin ELISA kit from thermo fisher?How does it work?

Is it ok to store the cell supernatant inside eppendorf at -80°C until use?

Thanks

Benedetta

Unfortunately, I had to stope expression process for about 5 months and after this delay time I had to again to do some change in expression conditions I mean against before I used 25◦C to participate bacterial suspension. But after purification step, there was no band in SDS PAGE. I don’t know what is the wrong? Is this possible that this change in centrifugation temperature caused I lost my protein? My protein is HIV-1 Tat and Expression temperature is 37◦C for 4 hours and I use BL21DE3 and PET28(a).

do you have any idea? Please?

I'm looking for this article, THOM, E. C. The discomfort index, Weatherwise, v.12, v.2, p.57-61, 1959, however I didn't find it.

Does anyone can help me?

Thanks

Separation of epoxides using a B-bex column with acetonitrile as solvent and deterctor FID. The conditions are: oven temperature-max 70 ° C, injector 280 ° C, detector 220 ° C, pressure 38 psi. I used the method around 30 injections, all normal, when finishing one of them, the baseline jumps and generates a lot of noise, from there, in all the chromatograms the baseline shows the temperature ramp that I use. What happened to the column?

Blue line - normal chromatogram. Green line - first time it appears.

Purple line and aquamarine - chromatograms after the jump

So i have values of L and C here. And I need to length and width. Expressions are there in the file. But i am not able to understand how they calculated. So can someone please explain me how they got length and width of L and C using that root-searching program developed in this paper?

By default if we use command graycomatrix the resultant we get is 8*8 matrix, But depending upon the problem this matrix should be changed

I would like to know how to implement the basic concept of LBP operator with uniform patterns. I have implemented the basic concept of LBP operator in MATLAB. Now I am using the concept of uniform pattern.

The problem is that I am not able to understand the basic concept of LBP with uniform patterns. How exactly should it be done? Is there any documentation available which can help me?

One of the most challenging aspects of developing the previous version of ForTrilinos was devising a reference-counting scheme to ensure safe type finalization in Fortran and corresponding object destruction in C++.  It's interesting to see that the SWIG-generated file forepetra.f90 on the new develop branch contains an Epetra_Object derived type with a type(c_ptr) component.  Will that component become associated with the C++ object that the Fortran object shadows?   Given that there's no final subroutine on the type, is there a strategy to avoid memory leaks and dangling pointers?  How will the C++ code get notified when the Fortran object goes out of scope so that C++ knows its safe to destroy the object?  How will the Fortran code get notified if C++ destroys the object?  

What will happen with an expression such as

type(Epetra_Object) :: a,b,c

a = f(b) + g(c)

where f and g are functions that have Epetra_Object results containing c_ptr components that presumably are associated with C++ objects that were instantiated at the direction of Fortran inside each function.  After the above assignment completes, the Fortran code no longer has a name associated with the two function results so the Fortran program has no way to direct C++ to destroy the corresponding C++ objects.

Damian

Shaft speed is 3000 rpm and should carry 400 hp.

Every integer can be expressed as a sum of three triangular numbers.

Given two integers N=a+b+c and M=x+y+z , how to express the product N*M as a sum of three triangular numbers. Example:

11=0+1+10 and 13=0+3+10 ; the product 11*13=143=10+28+105

How to write the product N*M=F(a,b,c,x,y,z) +G(a,b,c,x,y,z) +H(a,b,c,x,y,z) as three triangular numbers?

Hello everyone,

I want to measure the total nitric oxide in a serum sample using Total Nitric Oxide Assay Kit (enzo life sciences) and my question is about the proper storage procedure for the samples; do I have first to dilute and deproteinize the samples before storing them at -80 C ? or can I store serum samples at -80 C and perform the dilution and deproteinization step directly before the assay ? 

Thanks in advance!

In POSIX multithreading, how can I provide high priority to my c program executable among other system processes? I have assigned priority to the threads using "pthread_attr_setschedparam()" by FIFO & RR, but I have failed to reduce scheduling delays while executing the algorithm. When the execution(performance) of the program is analyzed using perf tool the CPU idle time is high compared to its non-threaded counterpart of the algorithm. I am using Ubuntu on Intel i5 processor based system. Is there any other solution to overcome this problem? Whether using an RTOS will help? Is there an RTOS suitable for multicore system and what kind of development environment is required? 

Hello,

I am using TriLink's Mutagenesis dNTP mix to perform EPR on a 1.3 kb fragment. I have been unable to observe a PCR product when following their recommended cycling parameters. I am able to successfully amplify my product using Phusion so my template and primers seem to be fine. 

Cycling Conditions:

95 C - 3 min - Initial denaturation

92C- 1 min/53 C - 1.5 min/72 C - 5 min x 30

72 C - 10 min - Final extension

Components: 10x PCR buffer, 500 nM Forward/Reverse Primer, 10 fmol template, Mutagenesis dNTP mix, 2 mM MgCl2, Taq (5U/uL), water up to 25 uL

Any troubleshooting tips?

Let $M$ be a totally real submanifolds of product Kaehler manifold

$\overline{M}(c_{1}, c_{2}) = \overline{M}^{n}(c_{1}) \times \overline{M}^{p}(c_{2})$

with $c_{1}$, c_{2} > 0 and tr(P - Q) = 0, where $P$ and $Q$ are the projection operators of the tangent space of $\overline{M}(c_{1}, c_{2})$ to the tangent spaces of $\overline{M}^{n}(c_{1})$ and $\overline{M}^{p}(c_{2})$ respectively. Can $M$ be a totally geodesic in $\overline{M}(c_{1}, c_{2})$ ?

                                      OR

Can $M$ be a totally geodesic submanifold of $\overline{M}(c_{1}, c_{2})$ under certain other conditions ?

I wanna to find the modulus from ultrasonic pulse velocity or (ASTM C 597) 

I am working on Processor-Pool model for a project. Here are some assumptions:

1. Users have a low-end system.

2. They want to use an application which requires high-end workstations.

3. They need real-time graphic(visual) updates.

I was wondering if it is possible to do this without screen capture or TeamViewer, or RealVNC, or Red5 like software. I came across an idea to develop a network display model through the following method:

a. The user has a small software installed on their system which is connected via sockets to the server. Each user input is sent to the server(This is where Processor Pool model come into play).

b. Like cloud gaming services, the input is processed and the display is generated. But instead of sending video output we generate a file which is sent to the user.

c. The user receives this file and the small software installed on his system generates the final display output.

Now my question is what might be the extension of file highlighted above. Conventionally we have the file with extensions like JPG/ AAC/ H.265 codec/ etc.

Is it possible to generate a JSON for the file and which when received by the software at the user end generates the desired display output?

Please post your queries, if you have any. I am looking forward to discussing with all the great people out there.

in the link of github sha transform has two arguments ctx and byte data[], what is data[] meant for and in the next line wat is i and j and why shifts are done of 24,16,8 and why j added with 3

next step what states mean here and according to what i know that first 16 rounds would be copying the m[16] and next 48 that computations of sigma and all would be done but in this program why direct 64 rounds that are done  and iteration starting from 0 to 64

what are bitlen and bitdata referring too...whybilen added with 512 in if part

and atlast final is completely a  grrek for me i could understand is somewhere padding is done but why if and else part are done with 56 and 64 i donno

and why memset has been used . at last step appending to padding tha message in bits and transform and last steps are completely out of my head now....sorry to ask the question mant times but need some guidance to understand and to work on because im not so strong in c

i have gone through all this links..but im not understanding the link which i have uploaded..i have to make changes in opencl code thta is implemented in sha256.for that proper undestanding of sha256 is needed..in the link which i uploaded can anyone help in explaing me wat happens in the program.

Do x,y,z values defined in UDF take the same x,y,z values of the main geometry in Fluent or does it depend on some flow like x is always for fluid flow etc?

Also, how to know if the UDF follows the origin of the required boundary surface ?

Attached is the UDF I have tried to code.

#include "udf.h"

DEFINE_PROFILE(inlet_temp,thread,position)

{ float x[ND_ND]; /*hold position vector*/

float y;

float r;

float x2;

float y2;

face_t f;

begin_f_loop(f,thread)

{

F_CENTROID(x,f,thread);

y=x[1];

x2=pow(x[0],2);

y2=pow(x[1],2);

r=pow(x2+y2,0.5);

F_PROFILE(f,thread,position)=/*..r*/;

}

end_f_loop(f, thread)

}

I want to know if there is any IDE for C/C++ which could help in easy debugging of a large C/C++ project in Mac.

I have tried Netbeans but it doesn't help although there is debugging process there but as it encounters any error it stops all of a sudden without giving any details about the line number where error is occurring.

I would like to emulate various n-bit binary floating-point formats, each with a specified e_max and e_min, with p bits of precision. I would like these formats to emulate subnormal numbers, faithful to the IEEE-754 standard.

Naturally, my search has lead me to the MPFR library, being IEEE-754 compliant and able to support subnormals with the mpfr_subnormalize() function. However, I've ran into some confusion using mpfr_set_emin() and mpfr_set_emax() to correctly set up a subnormal-enabled environment. I will use IEEE double-precision as an example format, since this is the example used in the MPFR manual:

The above code is from the MPFR manual in the above link - note that neither *e_max* nor *e_min* are equal to the expected values for `double`. Here, p is set to 53, as expected of the double type, but e_max is set to 1024, rather than the correct value of 1023, and e_min is set to -1073; well below the correct value of -1022. I understand that setting the exponent bounds too tightly results in overflow/underflow in intermediate computations in MPFR, but I have found that setting e_min exactly is critical for ensuring correct subnormal numbers; too high or too low causes a subnormal MPFR result (updated with mprf_subnormalize()) to differ from the corresponding double result.

My question is how should one decide which values to pass to mpfr_set_emax() and (especially) mpfr_set_emin(), in order to guarantee correct subnormal behaviour for a floating-point format with exponent bounds e_max and e_min? There doesn't seem to be any detailed documentation or discussion on the matter.

Here is a small program which demonstrates the choice of e_max and e_min for single-precision numbers.

With thanks,

James

Hi

I have a problem in my transformation part of project

after preparation of competent cells and transformation nothing growth in plates

protocol of competent cell is this

5ml of renewed bacteria in LB broth in certain OD

centrifuge 3000rpm 3min - remove liquid part

add 1ml of CaCl2 and re suspend  .incubate 30 mins on ice

centrifuge 3000rpm 3min - remove liquid part

add 670 MicL CaCl2 and re suspend . incubate 30 mins on ice

centrifuge 3000rpm 3min - remove liquid part

add 300 MicL of CaCl2

incubate on ice 30mins

heat shock 45sec in 42`C

immediately transfer tube on ice 2mins

add 900 MicL LB medium

incubate 4 hours in falcon tube in 37`C shaking  190 rpm

then culture in this medium :

LB Agar + Kana(50Micg/Ml) + tetra (10Micg/Ml)+ 100micg/ML X-Gal)+7micg/Ml gentamycin + 40 micg/ml IPTG

but nothing growth after 48hour in 37`C

what is your advise or where is the problem  

I have been looking at the "convolutionSeparable" code sample provided with CUDA 7.5, for the implementation of a 2-D FIR filter for image processing. 

The rationale behind the design is discussed in the link.

Has anybody else looked closely at this code and found possible improvements or have any other comments/thoughts? 

Let f be an involutive (f(f(x)) = x) function from R>0  to R>0 such that f(1) = c, (then f(c) = 1).

I have obtained the following f(f(x)f(y))/xy = f(xy)/f(x)f(y), by setting f(y) = 1, we get f(xy) = f(x)/y. How to prove that this is valid for all y>0?

I have used the injectivity of f. Note that f is a bijection, and f(y) = 1 for y = c.

The function in the question is f(x) = c/x.

Hello Everyone,

I want to scale down a 16 bit unsigned data into a range of 0 to 255 in C.

Can any body guide me how i can achieve this?

Looking forward for reply!

Best Regards

Awais

I need to import residual stress field into my model using the Predefined filed option and output database file. Everythin is ok until I need to start the calculation when it says; The following file(s) could not be located: "C:/....." . But file is there of course. Do you know maybe where is the poblem?

Best,

Darko

I have designed a testing approach to test integration fault of embedded system. I have already created the test criteria. But now i need to go for experimentation but i do have any sample code. I need some real C code which i can execute with test cases. I tried to search in many sites but did not get suitable code.

What should i do now? Because without execution i cannot collect the test result. Please share your idea.

Thank you.

In many articles, the transmitter sends data with a rate (R)<the outage capacity(C), and then the receiver can correctly decode the codewords.

If there is only 5 bits, and these bits are all destroyed by the noise. So, how the receiver recovers them? Because the noise is randomly.

Hello Everyone,

I want to implement elliptical low pass filter in C.

But i am finding difficulty in it.

Can any one please guide me how i can implement it?

Looking forward for your reply.

Best regards

Awais

I want to extract data directly from LIRT/HRIT data received from GOES Satellites and be able to process the fields in it. Maybe a reference of the standard data codification in LRIT/HRIT files will be also helpful for me.

I found bouncy castle, is that preferable?

The prototype of scanf is int scanf(const char *ptr , ...) ,Now I have following  confusions regarding  scanf :

1. How does it matches the fact that whatever is specified in the format string , in the similar pattern we must have the input 

for instance , format string is "%d ,%d" , so the input too should only be given as 2,3 

2. We say that scanf skips any white-space characters , but it is only due to white-space characters that we come to know about the next input .

Now if I write "%d  %d" ,Now I have given only 2 space characters between the format specifiers but then I can give any white-spaces between the inputs , so then is this skipping related to input or spaces between the format specifiers , How does it matter whether I give 2 spaces or 3 spaces between the format specifiers %d and %d .

3.And in the variable argument part we write &a ,&b for scanning the values but where do we have a pointer to hold the address of variable a and b and store the values in those locations , since in the prototype of scanf we only have 

int scanf(const char *ptr , ...) ; and *ptr is a pointer to input buffer so then where do we have pointers for accepting the address of variables passed to scanf function 

And similar confusions arise for printf as well except for the fact that there I have printf("%d %d",a,b) ; so now here in the prototype of printf is

int printf(const char *ptr , ...) , Now here *ptr is again a pointer to output buffer so then how come we are able to read from memory locations pertaining to variables a and b ?

I m trying to find video read & write library in C/C++, not OpenCV .

(Open source which is verified or made by research group.)

is there anyone can help me

My main purpose is developing the SPI (Serial Peripheral Interface) with Chip ADS1299 Texas Instrument. I has been built the C-source code program ARM'multicore-based but limited perform to Acquiring signal with loss data.

Many papers were suggested to develop with SPI DMA standard.

Can you advice for me about Daisy-Chain SPI to connecting 4 devices ADS1299 Texas Instrument with simultaneous process. Really thanks

Vibation analyzer in Measurement, Diagnosis and Speech Recognition use a state machine for event-driven control. Which programming language is the best for a software-state-machine in event-driven audiosignalprocessor?

I work on CORDIC-based DCT Structures and I want to know the main difference between Unfolded CORDIC and Lookahead CORDIC structures. Is there any difference between these structures?. These structures have been described in the following references.

[1]  M.-W. Lee, J.-H. Yoon, and J. Park, "Reconfigurable CORDICbased low-power DCT architecture based on data priority," VeryLarge Scale Integration (VLSI) Systems, IEEE Transactions on, vol. 22, pp. 1060-1068, 2014.

[2] C.-C. Sun, S.-J. Ruan, B. Heyne, and J. Goetze, "Low-power and high-quality Cordic-based Loeffler DCT for signal processing,"Circuits, Devices & Systems, IET, vol. 1, pp. 453-461, 2007.

I am optimizing an organic molecule on a CdSe cluster with Gaussian. However, the organic molecule is completely dissociated to its atoms in the final geometry. I am not sure about the basis set of Se. I have also tried the 6-31G basis for Se but I have the same result.

here is the input file

1 1

Cd 0.44201800 3.32548000 -0.38103700

Se 1.77943700 5.41809200 0.42354100

Se 1.57838900 1.12282200 0.43872800

Se -2.04088600 3.44451900 0.41648100

Cd 4.26234600 5.29905600 -0.37396700

Cd 4.06129800 1.00378400 -0.35878100

Cd 0.24097100 -0.96978900 -0.36585100

Cd -3.17725700 5.64717800 -0.40328400

Cd -3.37830600 1.35190600 -0.38809900

Se 5.39873800 3.09639500 0.44576500

Cd 7.88157800 2.97736200 -0.35171600

Se 5.19767900 -1.19887200 0.46095700

Cd 7.68055000 -1.31791100 -0.33653900

Cd 3.86024800 -3.29148700 -0.34360200

Se 1.37734100 -3.17244900 0.45391100

Se -2.24193600 -0.85075400 0.43166700

Cd 0.03992200 -5.26506000 -0.35066500

Cd -3.57935300 -2.94336500 -0.37291300

Se -5.66016200 5.76621400 0.39423300

Cd -6.99758400 3.67360100 -0.41034400

Se -5.86120900 1.47094200 0.40942100

Cd -7.19863200 -0.62166800 -0.39516000

Se 9.21905900 5.06997500 0.45285000

Se 9.01801000 0.77469500 0.46803600

Se 8.81695100 -3.52057400 0.48322500

Cd 7.47951900 -5.61318300 -0.32135800

Se 4.99662400 -5.49414400 0.47615900

Se -2.44298400 -5.14602400 0.44685400

Se -6.06225900 -2.82432900 0.42460600

Cd -7.39968100 -4.91693900 -0.37997300

Se -9.48048900 3.79263900 0.38717400

Se -9.68153800 -0.50263100 0.40235900

Se -9.88258500 -4.79790300 0.41754500

H 10.53166000 4.79103000 -0.22125300

H 10.31229300 0.73905500 -0.27810300

H 10.17197100 -3.50791000 -0.15120800

H -10.44276800 -6.08635800 -0.11884900

H -10.18311300 -1.79294200 -0.18051200

H -9.79474600 2.33395800 0.20839800

C -4.54000088 -1.38915111 -2.57307321

C -3.27539888 -1.91048011 -2.57303221

C -2.10958788 -1.07805311 -2.57304621

C -2.32662788 0.34240089 -2.57308921

C -3.59697288 0.88197689 -2.57312421

C -4.74684188 0.03606289 -2.57313321

C 0.49572012 0.34240089 -2.57307621

C 0.27868012 -1.07805311 -2.57302921

C 1.44449012 -1.91048011 -2.57298921

H 1.27521112 -2.98067111 -2.57292121

C 2.70909212 -1.38915211 -2.57301421

C 2.91593412 0.03606189 -2.57309321

C 1.76606512 0.88197689 -2.57309721

H -5.38856388 -2.05818911 -2.57301021

H -3.10611888 -2.98067011 -2.57296921

H -3.71511288 1.95693089 -2.57318421

H 3.55765512 -2.05819011 -2.57293521

H 1.88420512 1.95692989 -2.57313321

S -0.91545388 1.48302789 -2.57310821

N -0.91545388 -1.69791411 -2.57301221

C -7.18936988 -0.31836711 -2.57341621

C -6.20880388 2.01966989 -2.57289821

H -7.21172088 -0.95315611 -1.68118021

H -8.08499788 0.30027589 -2.57407021

H -7.21088288 -0.95374111 -3.46524321

H -5.76981188 2.48001089 -1.68069621

H -5.77021388 2.48032089 -3.46514321

H -7.27720988 2.22744389 -2.57261121

C 5.35846212 -0.31836611 -2.57321721

C 4.37789512 2.01966989 -2.57294621

H 5.38006512 -0.95378711 -3.46500821

H 6.25409012 0.30027789 -2.57381321

H 5.38072612 -0.95310711 -1.68094521

H 3.93908312 2.48028989 -3.46509621

H 3.93912312 2.48004089 -1.68064921

H 5.44630112 2.22744489 -2.57294521

N -6.00221388 0.55965989 -2.57318121

N 4.17130612 0.55965989 -2.57314521

X 1 F

X 2 F

X 3 F

X 4 F

X 5 F

X 6 F

X 7 F

X 8 F

X 9 F

X 10 F

X 11 F

X 12 F

X 13 F

X 14 F

X 15 F

X 16 F

X 17 F

X 18 F

X 19 F

X 20 F

X 21 F

X 22 F

X 23 F

X 24 F

X 25 F

X 26 F

X 27 F

X 28 F

X 29 F

X 30 F

X 31 F

X 32 F

X 33 F

X 34 F

X 35 F

X 36 F

X 37 F

X 38 F

X 39 F

H N S 0

6-31+G*

****

Cd Se 0

LANL2DZ

****

Cd Se 0

LANL2DZ

Hi, I am working on sliding mode controller in robotic manipulators. Does anybody know how to write the code in c language? Please help me.

Do you know any open source tool to migrate C to Java?

Hello

I have two matrices ones is the u-component velocity and the other is v-component velocity,I am trying to read the values of these two matrices and put them as an initial conditions in the domain of my model. I use the code below but I do not know how to read the values from the matrices and then write them into the model.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

#include "udf.h"

#define pi 4.*atan(1.)

DEFINE_INIT(uv_intial,d)

{

cell_t c;

Thread *t;

real xc[ND_ND];

FILE *fp;

real r1;

real xo1 = 0.00;

real yo1 = 0.00;

/* loop over all cell threads in the domain */

thread_loop_c(t,d)

{

/* loop over all cells */

begin_c_loop_all(c,t)

{

C_CENTROID(xc,c,t);

r1=sqrt(ND_SUM(pow(xc[0] - xo1,2.),

pow(xc[1] - yo1,2.),

pow(xc[2] - 0,2.)));

/* Note xc[0] is x coordinate, xc[1] is y and xc[2] is z */

if ( r1 != 0.0)

{

fp=fopen("u.txt","r");

fscanf(fp,"lf% %lf",&r1,&u);

DEFINE_RW_FILE(uv_intial,fp)

C_U(c,t) =

C_V(c,t) =

}

else

{

C_U(c,t) = 0.0;

C_V(c,t) = 0.0;

}

}

end_c_loop_all(c,t)

fclose(fp);

}

}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

thanks in advance for your help

Please give an opinion for my question, thank you. 

How to implement abstraction mechanism in c++ , what are the different types of abstraction mechanisms? I need some examples to understand.

Result: The number of compositions of 2n, say c_1+c_2+...c_k=2n, satisfy that Sum_(i=1..j) c_i <2j for all j=1..k is equal to C(2n-1, n), i.e., the number 2n-1 choose n.

E.g., when n=2, C(3, 2)=3 because we can write 4=1+1+1+1=1+1+2=1+2+1.

Is there an easy way to prove it directly?

close all

clear all

clc

a= rand(1e6,1);

b= rand(1e6,1);

c= zeros(size(a));

tic

tstart=tic;

for i=1:length(a)

c(i)=a(i)+b(i);

d(i)=c(i)+b(i)*a(i)+b(i)/a(i)+b(i)*a(i)+b(i);

e(i)=d(i)+c(i)*a(i)+b(i)/a(i)+b(i)*a(i)+b(i);

c(i)=a(i)+b(i);

d(i)=c(i)+b(i)*a(i)+b(i)/a(i)+b(i)*a(i)+b(i);

e(i)=d(i)+c(i)*a(i)+b(i)/a(i)+b(i)*a(i)+b(i);

c(i)=a(i)+b(i);

d(i)=c(i)+b(i)*a(i)+b(i)/a(i)+b(i)*a(i)+b(i);

e(i)=d(i)+c(i)*a(i)+b(i)/a(i)+b(i)*a(i)+b(i);

end

t_normal_for=toc(tstart)

tstart=tic;

parfor i=1:length(a)

c(i)=a(i)+b(i);

d(i)=c(i)+b(i)*a(i)+b(i)/a(i)+b(i)*a(i)+b(i);

e(i)=d(i)+c(i)*a(i)+b(i)/a(i)+b(i)*a(i)+b(i);

c(i)=a(i)+b(i);

d(i)=c(i)+b(i)*a(i)+b(i)/a(i)+b(i)*a(i)+b(i);

e(i)=d(i)+c(i)*a(i)+b(i)/a(i)+b(i)*a(i)+b(i);

c(i)=a(i)+b(i);

d(i)=c(i)+b(i)*a(i)+b(i)/a(i)+b(i)*a(i)+b(i);

e(i)=d(i)+c(i)*a(i)+b(i)/a(i)+b(i)*a(i)+b(i);

end

t_parfor=toc(tstart)

How can I locate and distinguish between the N and C terminal in a Xray crystallographic structure of a protein in pdb?

Theses days, I am doing literature review about the new trends in control of nonlinear systems, but it looks like this is a very broad subject. What are the new research areas in the control of such systems?