Beta greater than 1 in structural equation modeling?

Dear all, I've encountered a problem while doing SEM and I can't find a solution anywhere. Hope that someone here can help me with this. The problem is, that some standardised estimates in...

11 January 2021 9,792 5 View

SEM in experimental design with 3 groups?

Hi all, I'm trying to conduct SEM analysis (in R) for a study with experimental design with 3 groups (1 control and 2 experimental), but I seem to get the wrong results in the regressions. Hence...

03 October 2020 3,286 11 View

What is the correct SEM estimator for categorical non-normal data?

Dear all, I'm conducting SEM in R with lavaan, and I'm not certain what is the correct estimator for my model. I have 10 variables in total. 7 of the variables are each composed of 3 items rated...

05 September 2020 157 4 View

Where can I find information about occuring Gnathotrichus materiarius (Coleoptera: Scolytinae) in America/USA?

Where can I find information about occuring Gnathotrichus materiarius (Coleoptera: Scolytinae) in America/USA? I found some publications and I downloaded data from GBIF, maybe there is something...

24 June 2018 9,506 2 View

Is it possible to create generic model in C-PLEX/Gurobi/Google OR-tools etc?

I have a problem, where equation changes with problem instance size. There are given n circles (centers and radiuses ). Circles dont intersect, they are separable. I need to visit every circle...

03 September 2017 8,557 3 View

Does anyone have identification key that includes genus Hypothenemus (Curculionidae: Scolytinae)?

I found bark beetle, probably Hypothenemus eruditus Westwood, 1836 (Curculionidae: Scolytinae), but I can't find any identification key to confirm it.If anyone has it I will be grateful for sharing.

09 May 2017 8,380 3 View

Western blot detection of Rhodopsin in Drosophila heads?

Rhodopsin in Drosophila is 35kDa membrane protein. Do you know some good homogenization buffer? In the literature I see that most of the people use Laemmli sample buffer and just simply smash the...

09 March 2016 7,318 8 View

Mozilla has very interesting campaign for Gb/s future of the networks

Please contribute, comment, validate, show value, enhance and vote. http://www.mozillaignite.org/ideas/131/ http://www.mozillaignite.org/ideas/169/

12 August 2012 9,084 2 View

Hypoborus ficus (Coleptera: Scolytinae) in Austria - primary source of information?

01 January 1970 9,176 3 View

How UAV or drone can be beneficial to better estimate crop yield?

As we know, crop yield estimation has been done traditionally with farmer's expert knowledge, deductive sampling in representative areas, and remote sensing with satellite imagery. Farmer's Expert...

01 March 2021 3,468 3 View

Gas sensor response and recovery time independant of flow rate and chamber volume?

I am trying to obtain the response and recovery times for my gas sensor device. It appears the the response/recovery times are primarily dependant on the flow rate of the gas I inject into the...

26 February 2021 1,511 3 View

Are there methods for automatically mapping floodplains, fans and terraces?

I want to map these river geoforms with as little subjectivity as possible. I have a high resolution DEM generated by drone data.

22 February 2021 7,800 3 View

How to find natural frequency of a bridge from vehicle induced vibrations?

i have frequencies of bridge that are effected by mass of vehicle. the problem is when any vehicle pass the bridge it would add the its mass to the bridge mass ultimately mass of the bridge will...

22 February 2021 10,004 3 View

The Role of Town Planners in CAV Use?

Colleagues and I are about to begin a project investigating the role of town planners and local authorities in establishing the introduction of connected and autonomous vehicles (CAVs). What...

21 February 2021 2,247 3 View

Open Source IoT Simulators supported by Machine Learning?

Dear Research Gaters, Let me first add context to the question. I am looking to simulate the waste management system and resources of a city. The hardware devices I need to simulate include,...

21 February 2021 2,333 4 View

What type of pressure sensor are usually used in microfluidics?

My team is designing a dual channel microfluidic chip that runs air and water. I think we've decided on the NE1000 syringe pump for it's versatility and feedback control. We will be ordering the...

18 February 2021 9,928 2 View

How to realize refractive index values of 1 to 1.1?

Hello researchers! While studying the literature on refractive index sensors, most of the articles simulate their devices with a refractive index ranging from 1 to 1.1, with small steps in...

17 February 2021 1,578 4 View

What should a smart water system look like?

Our team is designing a smart water C&C dashboard for a smart city initiative. As we look into the current smart water system landscape, we couldn't reconcile to a definitive solution that...

16 February 2021 1,094 3 View

Are cloud points able to identify tree species?

Hello Dears My goal is to classify dense forest tree species using drone images. Is it possible to classify dense cloud points? If yes, in what way and in what software? Thankful

15 February 2021 3,475 3 View