Hi! Does anyone know about this error in GIS: ((invalid extent for output coordinate system)) this happened for projecting coordinate system??

Thanks for any help

04 July 2020 3,076 3 View

What is the best approach for analyzing a survey with 35 questions?

Hello, I designed and sent the questionnaire to participants and already have data for a survey about "International Entrepreneurial Culture" with 35 questions in 6 predefined dimensions. I asked...

14 June 2020 3,866 7 View

I am looking for a dataset of mri images of the muscles of the hand or leg that have been ruptured.Do you know a site that has this data set ?

I am looking for a data-set of MRI images of the muscles of the hand or leg that have been ruptured.I need this data for muscle segmentation.

02 March 2020 8,823 3 View

Why the principle of energy survival is violated?

gas balloon power station Plan gas balloon power station

11 October 2019 4,772 3 View

What is the best way of making solutions from Ethanol, Ethyl Acetate and Hexane extractions?

I have a different small amount of Ethanol, Ethyl Acetate and Hexane extractions originated from plant materials as bioproducts and am going to make solutions in order to spray on the plants. Can...

30 October 2018 1,075 3 View

How to read a xml file with different data tables in the same file Using Talend open studio for example?

I want to make an excel file for data visualization. If there is other ways for example using ETL libraries in Python to read xml files and make it available for statistical analysis and data...

29 October 2017 8,780 1 View

How to recognize mixed classes when the classifier only trained by single classes?

11 March 2016 2,335 7 View

Is there any standardized relationship between the size of the dataset and the number of cases for nodes creation when building a decision tree?

I have a dataset with a total of 103 cases. There are three distinct values for my dependent variable each of which having different size, i.e. 43, 42, and 18. I am using SPSS to classify my data...

10 March 2016 4,017 1 View

Would that be acceptable to combine several endmembers of a common land cover to create a single one out of them like by averaging their spectra?

There are different types of impervious surface in almost many of urban landscapes. Asphalt, tile roof, concrete roof, to name a few, each of which exhibit different spectrum. As with impervious...

01 February 2016 8,620 3 View

How to extract/identify water bodies from remotely sensed data?

I am dealing with Landsat imageries. I am using ENVI for deriving my land cover. Water bodies are not among my features of interest and I need to identify them in order to mask them out from my...

01 February 2016 5,624 8 View

How can the use of Jolly Phonics improves the quality of reading, speaking and writing in rural disadvantaged communities in Papua New Guinea?

Jolly Phonics reading program is an effective way to teach early reading to young learners. How can lectures at the university prepare early childhood student teachers to teach Jolly Phonics to...

03 March 2021 3,731 3 View

How to calculate BREQ 3 questionnaire?

how to calculate BEHAVIOURAL REGULATION IN EXERCISE QUESTIONNAIRE BREQ 3 ,which contain 24 questions and each question has 5 answers (0- Strongly disagree , 1-disagree, 2- Neither agree nor...

02 March 2021 811 3 View

I am interested in medicinal chemistry field, which books are highly recommended to learn from?

I am at the beginner level in drug design and drug discovery, and I am interested to learn more about this field. Which books are highly recommended to start from and gives me all essential...

02 March 2021 8,437 2 View

Please suggest a good text book for "Research Methodology in Life Sciences". Which book would be good for PhD Scholars?

Please provide Book Title and author name

02 March 2021 9,059 3 View

Could any one guide me, to write research proposal for grant? ?

We have one plant, the local people using this for controlling blood sugar, the toxicity and antidiabetic activity of the plant is not reported yet, please guide from whag should be the process ?...

02 March 2021 2,300 1 View

Where to find data on trees in tropical agroforestry?

Hi, I'm looking for data (mainly related to management: growth rate, canopy size, soil and climate preferences, etc.) about tropical trees used in tropical agroforestry. Have you ever heard about...

28 February 2021 7,356 8 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

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

How to use measure capacitance change in COMSOL time dependent study ?

I want to measure change of capacitance due to relative displacement between two parallel plates in COMSOL. Distance between two plates changes with time. So I'm using a time dependent study but...

26 February 2021 8,567 3 View