Mohammad Almohammad

10 Questions 6 Answers 0 Followers

Questions related from Mohammad Almohammad

How to define probabilities for risk events based on five point likert-scale?

I have asked a number participants (contractors, owners, constants and subcontractors) by means of questionnaire who were randomly selected to specify frequency of occurrence of risk factors based...

01 January 2019 8,863 1 View

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...

12 December 2018 5,628 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...

11 November 2018 1,077 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...

06 June 2018 8,204 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...

04 April 2018 6,239 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...

04 April 2018 7,714 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...

03 March 2018 2,204 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...

02 February 2018 6,689 2 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...

12 December 2017 2,013 8 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...

12 December 2017 7,197 3 View