How to estimate 2SLS with different instruments for different endogenous variables?

To be specific, I want to conduct an IV regression in stata with the following three equations. EQ1: Y1 ~Y2 Y3 X EQ2: Y2 ~ Z1 EQ3: Y3 ~ Z2 Both Y2 and Y3 are endogenous. However, Z1 and Z2 are...

23 February 2021 6,266 3 View

Hi, Good day! Do you have related studies about my title, "Factors Affecting the Senior High School Students' Stress Tolerance in Problem Solving"?

I am new researcher. I want to learn more and I need your help. Thank you.

04 February 2021 6,834 4 View

How to design a PI controller for fourth-order transfer-function ?

Hey! I'm in the work of designing a controller for a zeta converter, it is a fourth-order system. I tried ways like the Ziegler-Nicols method, Root locus method using Control System Designer in...

29 October 2020 4,054 3 View

How to cite the results from Gallup Strengths Finder Assessment?

In my report, I included the ideas from the results given to me by the Gallup Assessment, but I am confused on how I will cite the website using APA 6th edition and what is the format for both the...

12 October 2020 5,396 2 View

Is it possible to get more than one final optimal solution using TOPSIS decision-making method in multi-objective optimization problem?

So is it possible to get more than one final optimal solution using TOPSIS decision-making method in multi-objective optimization problem? If there is the possibility of getting more then one...

01 September 2020 7,680 9 View

How are latent means and observed composite means different?

I know that they are different but I am kind of at a loss for how to explain the difference, but I may be overthinking it. In simple terms, my understanding is that a latent mean(intercept) is an...

19 August 2020 8,857 4 View

How to model water acidification using CO2 and acids ?

Hello, I am trying to model the amount of CO2 vs mineral acid (HCl, H2SO4) needed to acidify water with various alkalinity conditions. It would be helpful if I can get some suggestions on the...

04 May 2020 9,798 8 View

How to calculate V0 (initial velocity) for a discontinuous enzymeaic assay?

Usually, for fixed-time or discontinuous enzyme assay, a specific incubation period (say 30 minutes incubation period) is required before the reaction is stopped and measured (say...

30 April 2020 2,506 2 View

Does Actively Growing Culture delivery from DSMZ require dry ice shipping?

I tried to see the details of the delivery of a bacteria in risk group 1. But couldn't find the exact information . https://www.dsmz.de/collection/catalogue/microorganisms/prices Does...

26 April 2020 7,021 1 View

How to do a two-way ONOVA in SPSS?

I don't have advanced knowledge of SPSS and tutorials aren't making much sense to me, if anyone is able to explain SPSS two-way ONOVA step-by-step in the simplest form I would be grateful. My...

30 March 2020 8,769 2 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

IHC on mouse liver hepatocytes?

Can anyone help me choose primary antibodies for mouse liver hepatocytes and also in conjunction Cd8 cells. Also Cd3 cells. I want to look at hepatocytes and adjacent immune cells in mice with...

01 March 2021 6,953 1 View

Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

I would like to get more information on the cyclic compressive fatigue testing (BS EN 12697 - 25) which is typically done for bituminous material in pavement design. Any one can advise on the...

28 February 2021 2,004 3 View

How to Eliminate cosine error and abbe error in LASER measurement system(for example Rhenishaw XL80)?

I like to do project in laser measurement system. My objective is to eliminate or reduce the cosine error, abbe error in Laser measurement system. I have Rhenishaw XL80 system. Please tell the...

28 February 2021 4,890 3 View

Stress/strain tensors decomposition ???

25 February 2021 6,760 1 View

How to model Supercritical water gasification (SCWG) process in Homer software?

Hi everyone How to model Supercritical water gasification (SCWG) process in Homer software?

25 February 2021 4,075 1 View

The most suitable method to calculate the stress intensity factor in the presence of contact between the crack lips?

I'm trying to study cracked structures under a compressive load taking into account contact between the crack lips. I would like to know if the method of extrapolation by displacement remains...

21 February 2021 8,694 4 View

Any suggestions or recommendations on a good publishing house based on the African for academic books in the field of Communication and media studies?

I am currently working on a book on Public Relations (from an African perspective) and the rationale behind the book is the fact that as instructors in this field, we borrow instances and case...

19 February 2021 2,482 2 View

When to use different framework?

Hi, can I use both conceptual framework and theoretical framework in my systematic review? My future study plan is to use a theory. In this situation for my systematic review should I use both or...

18 February 2021 9,581 2 View

Person-Codes for questionnaires in longitudinal studies: Is there an easy solution for better matching-rates?

Hi, I have a problem regarding matching of longitudinal data in my field of research (university students). We have a Person-Code for matching data measured in different time points, but 30%+ of...

17 February 2021 3,075 4 View