Why is cronbach's alpha sometimes calculated for non-unidimensional questionaries?

I've recently come across with several published articles where questionaries composed of more than one section (where every section is meant to gather data for separate variables/dimensions of...

11 November 2020 1,805 7 View

Could you recommend a Journal to publish a literature review about the relationship between globalization and ultranationalism in Europe?

Currently I am finishing the literature review about the relationship between globalization and the resurgence of ultranationalism parties in Western Europe. This is the first part of my Doctoral...

02 October 2020 9,773 5 View

Where to find data for Frequency Regulation and Peak Shaving control signals for intregration of BESS to the utility grid?

I'm looking to study Battery Energy Storage System (BESS) integration to the utility grid for different applications such as Frequency Regulation and Peak Shaving. I would like to learn about...

05 August 2020 2,075 1 View

Glass luminescence after high electromagnetic pulse?

In a Z-pinch test using Pulsotron-3 fusion reactor, I have seen at high-speed camera that a pyrex glass generated a beautiful green light during some milliseconds after the electromagnetic pulse...

18 July 2020 2,488 2 View

Collaboration against COVID-19 based on 3D printing, any JCR journal suggestion?

Good morning, Our university has collaborated during the last three months of the pandemic with the printing of PPEs by means of 3D printing, contributing with more than 26,000 parts in a...

09 June 2020 7,107 4 View

What is the best intelligent algorithm to control engines?

There are PIDs but usually only the Proportional part of the PID algorithm is usually used Mapping systems, as used in diesel engines But make a several layer PIDs is difficult. Map based systems...

06 May 2020 1,065 0 View

How to calculate total electronic cross sections?

Hello, I'm trying to understand photon shielding parameters such as mass attenuation coefficients (MAC's) and effective atomic numbers (Zeff's). I would like to ask how to calculate for total...

08 April 2020 7,893 2 View

How do you deal with lost data?

Given your specific discipline. Have you ever irretrievably lost data of an ongoing research project? How did you handle it? Thanks in advance. (Also, this is my story. A couple of years ago, in...

29 March 2020 297 21 View

Which environmental problems arise from landfill mining ?

Landfill mining techniques arise as one of the available alternatives to mitigate negative environmental impacts from municipal solid waste landfills. High recycling potential generation is one of...

28 March 2020 1,782 10 View

How should a shapefile (.shp) be referenced?

A local fault shapefile prepared by a public academic institution was required to complement a qualitative analysis. It was not possible to access a study or technical report documenting the data...

11 March 2020 4,329 3 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

I have designed reflectarray element and feeding it though Horn Antenna on HFSS. After full wave simulation, I am not getting desired results?

I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern...

01 March 2021 9,701 5 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

Microstrip antenna design tutorial of HFSS 3D layout module ?

I have designed a 24 GHz rectangular antenna on HFSS 3D model and got desired results while desing the same antenna with same dimensions I am getting resonance frequency at 27 GHz I am...

28 February 2021 4,426 2 View

How to improve and implement WBAN MAC and Radio modules under Castalia 3.2 ?

Hello researchers, Hello Castalia3.2 researchers I am a beginner with Castalia, I work on optimization of RFID systems used in wireless body networks. I simulated a WBAN with 10 nodes and one...

28 February 2021 400 1 View

Compact antenna for the frequency range 1 MHz-5 MHz?

Hello everybody! I have a problem with developing a compact antenna for the 1MHz-5MHz frequency range. Tell me what type of antenna can be used and what books and articles to read to perform this...

27 February 2021 7,710 4 View

Is it possible to have two luminescence bands of the same peak position but with different intensities in single spectrum??

Hi! If it is possible to have two luminescence bands of the same peak position in a spectrum, what is the reason behind formation of two separate bands instead of one? This phenomenon is related...

26 February 2021 4,963 5 View

How to measure angle between laser travel path and machine axis in Laser Measurement system?

25 February 2021 1,987 3 View

How can I find a Raman spectrum wavenumber corresponding to what compound?

I have several Raman spectra with very distinct peaks at certain wavenumbers, such as 277, 359, 466, 583, 623, 686, and 795cm-1. How can I identify them to what compound(s)? The RRUFF and others...

24 February 2021 363 3 View

What are difference between laser diodes, simple light emitting diodes and power light emitting diodes when operated in the visible spectrum ?

I want to illuminate a scene (small space) using LED to capture photographs or videos of some tiny objects inside the space. But am not sure if I should use a Laser LED, or simple LED or power...

22 February 2021 4,240 4 View