How to write a spark function ?

I have a function written in SQL and I would like to write it in Spark how should I proceed. Thanks. The function is like this: CREATE OR REPLACE FUNCTION grid( widthx double precision,...

04 May 2018 4,626 3 View

Stored procedures in Spark ?

I am migrating from PostgreSQL to Hive and I have a few stored procedures that used to be in postgres. I would like to know if it is possible to write stored procedure in spark, and if it is not...

04 May 2018 8,976 1 View

Hive UDF Error ?

I have the function below which is supposed to calculate azimuth it has to do the same job as ST_Azimuth of PostGIS in Postgresql. (st_azimuth.png) When I execute the function in Java I get a...

04 May 2018 5,700 0 View

How to define big data ?

In the relational databases the data sets are always in a pristine condition, making data that way take a lot of time and effort which make the task of handling a big volume of data hard. As an...

03 April 2018 8,841 1 View

Can we talk about intensive computing when the size of the data is not huge ?

I would like to know if when talking about intensive computing it means that the data that we are working with is big ?

03 April 2018 1,746 3 View

How to resolve a computing intensive problem ?

In order to resolve a computing intensive problem I'm working with a lot of recursive function, whoever i don't get a good answer in a short amount of time and sometimes I do get stack overflowing...

03 April 2018 5,736 2 View

How to cast a problem to make it suitable for a distributed execution ?

I have an algorithm which is running in a sequential way however, I don't get the desired performance especially when it comes to execution time and i would like to remodel it to make it suitable...

03 April 2018 8,682 3 View

Intersection spatial big data ?

How to do intersection between a point (x, y) and a table containing polygons (cells) to match the points to the cells in the context of Spatial Big Data ?

01 February 2018 475 3 View

Buffer Exchange using column packed with sephadex G-25 effect on protein concentration?

Hello, If i am doing a buffer exchange for an antibody of 1mg/mL, does the elution lose protein in the process of buffer exchange? For example, if i flow through 500 uL of 1mg/mL sample, and...

03 March 2021 6,299 3 View

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03 March 2021 5,360 2 View

How can we raise the figure when we writing a paper with Latex ?

Hi, everyone. I'm a starter to write a paper by Latex. But I have some difficulty using it. I'm writing the paper with 2 columns. And, there is one figure that occupies the 2 both-sides. I want to...

26 February 2021 3,738 3 View

What is the best way to calculate the angles of twist for concrete columns subjected to torsional moment using finite element software?

In Finite element software like ANSYS , there is difficulty in obtaining direct results of twisting of concrete members because SOLID65 which is the unique element designed to represent concrete...

26 February 2021 3,806 2 View

Compute for the total volume of concrete needed for the concrete pouring of the foundation including its column up to NGL only as shown in the plan?

Looking for the quantity of cement, sand, and gravel of footings and columns. Thank you!

25 February 2021 3,092 2 View

No amplification data for qPCR on MxPro?

I have set up a qPCR run on MxPro with SYBR green and ROX as a reference, however, when I go to the analysis section the program seems to only collect data for the dissociation curves and not the...

25 February 2021 8,039 1 View

Can I use TCA instead of TFA for protein analyis in RP-HPLC?

I am trying to analyze lipase using the reverse phase-HPLC C18 column. In the literature, 0.1 % TFA was and 60% ACN was used. Can I use TCA in place of TFA? If any other methods are available to...

25 February 2021 2,388 3 View

Can I use acetic acid with an ELITE WAX Perkin Elmer column for Gas Chromatography?

Hi! I would want to know if I can use acetic acid with an ELITE WAX Perkin Elmer column for Gas Chromatography. This column has a polyethylene glycol phase, but I can't find the manual to check...

22 February 2021 730 2 View

My silica gel column dried can I somehoe save the trapped matter?

I tried to separate my substance from a protein in a sillica gel column. By mistake, it dried and cracked. Can I save the trapped substance? Can I repack it ,or at least elute all of the trapped...

22 February 2021 1,789 3 View

Physical-chemical formation of stalactites/stalagmites. what promotes the formation/growth of these structures?

I know, or think I do, the basic idea behind these natural structures, as from what I know they form due to water dripping from the top leaving a salt deposit behind. But started to wonder about...

22 February 2021 1,400 4 View