How to determine the relationship between project risk and delay percentage in construction projects?

Hi, I am using questionnaire survey to draw the relationships between project risk and delay percentage in construction project based on expert opinions. The causes of delay were identified and...

11 December 2018 5,558 3 View

How confidence level and margin of errors affect sample size in a survey research?

I am conducting a study using questionnaire survey for tow purposes: first: ranking risk factors effecting time delay in construction by taking the average score of respondents based on five point...

10 November 2018 1,012 0 View

How many experts required for introducing conditional probability tables in Bayesian networks?

I am conducting a research for modelling risks in construction projects using Bayesian networks. The whole network is constructed by expert knowledge. In the process of introducing CPTs, how many...

05 June 2018 8,141 3 View

Is the method used to define conditional probability tables in bayesian network correct?

I am using Bayesian network for modeling risks in construction project. referring to the article or the thesis" Estimating cost contingencies of residental building projects using Belief...

03 April 2018 6,169 3 View

Do the values calculated by Relative Significance Index Score (RSIS) have any meaning? do these values helpful in building Bayesain Belief Network?

Referring to the article L.Y. Shen, W.C.G. Wu, S.K.C. Ng, Risk assessment for construction joint ventures in China regarding RSIS. I am conducting a research to explore causes of delay in road...

03 April 2018 7,643 1 View

How to write a peer review?

Hi, I have recently seen many ways for writing a peer review. Many have suggested to use table for this purpose. I need to know what criterias should be taken into account. For instance, do all...

02 March 2018 2,127 4 View

How to make prediction in Bayesian belief networks?

Hi, I am using Bayesian belief networks method to predict time delay in construction projects. Regardless how to collect data, I want to be definite that I meet network requirements. I address the...

01 February 2018 6,626 2 View

What test should be used for five points likert-scale?

I need to send a questionnaire to professionals in roads construction . Respondents have to estimate the probability of occurrence and the impact of risks based on five points likert-scale (very...

11 December 2017 7,036 3 View

How to determine sample size in a questionnaire survey?

I am conducting a research containing a questionnaire survey. Respondents are required to responds to two attitudes ( probability of occurrence and degree of impact) based on five points likert...

11 December 2017 1,913 8 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Is there a powerful system for the security of the systems distributed on IoT systems?

Is there a powerful system for the security of the systems distributed on IoT systems?

02 March 2021 3,858 10 View

Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 View

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View

How can I integrate a routing protocol in a tiny device (e.g. Raspberry Pi)?

Hi Community, I'm facing the issue of integration/compiling a new routing protocol in a WSN simulator. The final goal is to successfully add, configure this routing protocol in hardware devices...

01 March 2021 9,332 6 View

Timeout error!! Processor in the loop (PIL) using STM32F4 Matlab 2018a?

Dear Researchers I am trying to perform a PIL simulation using STM32F4 Discovery board and comunication serial USB TO TTL. During simulation I receive the following timeout error: An error...

01 March 2021 2,327 1 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

For modelling epoxy-based matrices (in composites), which model in ABAQUS is the most suitable, Concrete damaged plasticity or Drucker-Prager model?

I am working on developing a micromechanical FE model for predicting kink-band formation in UD composites. To model matrix plasticity, which model, out of Concrete Damaged Plasticity and...

28 February 2021 5,415 1 View

VIF very high, but correlation is low and coefficient is significant. Which one whould I choose?

Hello. I have a question whether if my coefficients (statistically significant) would be valid when VIFs are really high. In my model, there are independent variables(IV), moderating variables...

26 February 2021 956 13 View