Alireza Pakgohar

@a_pakgohar@pnu.ac.ir

Department of Statistics
Department of Statistics, Payame Noor University, Tehran, Iran.

Alireza Pakgohar


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https://researchid.co/pakgohar

RESEARCH, TEACHING, or OTHER INTERESTS

Statistics and Probability, Modeling and Simulation, Computational Theory and Mathematics, Statistics, Probability and Uncertainty
12

Scopus Publications

422

Scholar Citations

9

Scholar h-index

7

Scholar i10-index

Scopus Publications

  • GREEN DELIVERIES ON A BUDGET: HOW SUSTAINABILITY AND COST SHAPE VIETNAMESE E-COMMERCE CONSUMER CHOICES
    Seyed Amirhossein Shojaei, Alireza Pakgohar, Do Y Vy Tran
    Economics Innovative and Economics Research Journal, 2026
    This exploratory research provides a study to examine the relationships between perceived sustainability (PS) and perceived cost (PC) on consumer attitudes (AT), intention to use (IU), and actual choice of delivery methods (DM) in e-commerce in Vietnam under Stimulus-Organism-Response (S-O-R) framework. PS has a positive effect on AT, indicating that there is increasing ecological awareness, while PC has a negative effect on AT, indicating cost sensitivity. AT is a strong predictor of IU, but IU has little influence on DM. Instead, AT causes behaviour, and so the latter one suggests intrinsic values may drive sustainable behaviour more than intentions. Age and gender have no significant effect, but income negatively affects AT, consumers with higher income may see the existence of eco-friendly options as inconvenient. An Importance-Performance Map Analysis (IPMA) results reveal PS can be considered a high-performance strategic driver of AT and PC a barrier. The findings advise businesses to focus on sustainability communication and provide financial incentives to ease cost issues. Policymakers need to promote sustainable logistics adoption via subsidies and public-private partnerships to alleviate cost barriers and encourage green last-mile solutions through policies and incentives promoting affordability.
  • A COMPREHENSION OF THE BURR TYPE-II DISTRIBUTION BASED ON RECORDS: PROPERTIES, ESTIMATION AND PREDICTION
    Alireza Pakgohar, Parviz Nasiri
    Journal of Statistical Research, 2025
    This article introduces the Burr Type-II distribution and derives various point estimates for unknown parameters based on record statistics. It also presents predictions for future record values from a Bayesian perspective, supported by a numerical study to illustrate the results. Furthermore, the article covers the properties of the Burr Type-II distribution and includes the calculation of entropy and extropy functions, as well as an investigation of stochastic orders such as usual stochastic order, likelihood ratio order, and hazard rate order. Journal of Statistical Research 2025, Vol. 59, No. 2, pp. 325-342
  • Sample Size Calculation Based on Research Approaches in Animal Studies
    Alireza Pakgohar
    Journal of Biostatistics and Epidemiology, 2023
    Introduction: Sample sizes that are too small can produce inconclusive results, while sample sizes that are too large may raise ethical concerns and produce trivial outcomes. Ethical considerations of sample size calculation in animal studies are essential and researchers should consider the 3R approach. Therefore, accurately calculating the sample size is essential to ensure adequate statistical power and avoid wastage of resources.Methods: The paper presents several innovative approaches for conducting small-scale sampling in animal studies. It includes a comprehensive review of relevant literature, discussing various proposed methods for determining sample size in animal studiesResults: In this study, various formulas are available for preparing sample size calculations that are relevant to the research design. These include t-tests (for one sample and two independent/paired samples), ANOVA, ANCOVA, simple/multiple linear regression, as well as proportion studies and studies utilizing correlation coefficientsConclusion: Our aims to equip researchers with formulas for reliable findings and adherence to ethical principles for sample size calculating in animal studies.
  • Goodness of fit test using Lin-Wong divergence based on Type-I censored data
    A. Pakgohar, A. Habibirad, F. Yousefzadeh
    Communications in Statistics Simulation and Computation, 2020
    Goodness of fit tests with two different methods are carried out in the present paper in order to recognize normal and exponential distributions within Type-I censored data. Here, we use the Lin-Wong divergence as our proposed measure of distance between distributions and compare its performance with that of other well known distance measures using an empirical distribution function and Shannon (1948 Shannon, C. E. 1948. A mathematical theory of communication. ACM Sigmobile Mobile Computing and Communications Review 5 (1):3–55.[Crossref] , [Google Scholar]), entropy concept. Furthermore, we present two real data analysis procedures using those proposed methods.
  • Lin–Wong divergence and relations on type I censored data
    A. Pakgohar, A. Habibirad, F. Yousefzadeh
    Communications in Statistics Theory and Methods, 2019
    Divergence measures are statistical tools designed to distinguish between the information provided by distribution functions of f(x) and g(x). The magnitude of divergence has been defined using a variety of methods such as Shannon entropy and other mathematical functions through a history of more than a century. In the present study, we have briefly explained the Lin–Wong divergence measure and compared it to other statistical information such as the Kullback-Leibler, Bhattacharyya and χ2 divergence as well as Shannon entropy and Fisher information on Type I censored data. Besides, we obtain some inequalities for the Lin–Wong distance and the mentioned divergences on the Type I censored scheme. Finally, we identified a number of ordering properties for the Lin–Wong distance measure based on stochastic ordering, likelihood ratio ordering and hazard rate ordering techniques.
  • A new model for probabilistic multi-period multi-objective project selection problem
    24th International Conference on Production Research Icpr 2017, 2017
  • Logistic regression approach in road defects impact on accident severity
    Mohadeseh Khalili, Alireza Pakgohar
    Journal of Emerging Technologies in Web Intelligence, 2013
    Safety and accident issues are considered as an important problem in the world. Road transportation issues would have a more conspicuous countenance in the country of Iran in which, over 94 percent of all transportations take place through roads. The roads’ contribution to the traffic accidents at mean is 24 percent however this value is 36 percent in Iran. Road traffic crashes exert a huge burden on Iran's economy and health care services. Many parameters, safety signs and equipment, Vertical and horizontal arc combination along the road and all the effective factors in decreasing the accidents, are considered when determining the safety level of the roads. Road defect is being considered as one of the essential factors causing accidents to happen.  This article investigates the severity factor of the accident according to the vehicle movability situation after the accident. The results of this research has shown that most  important factors reducing the safety on the suburban roads  in Iran is “insufficient road width” pertaining to frequency  and “Level difference between road & shoulder” pertaining  to accident severity.
  • Infant jaundice epidemiology investigation: Case study: Meybod and Ardakan in Yazd province; Iran
    Alireza Pakgohar, Kobra Khajepoor Firoozabadi
    Icssbe 2012 Proceedings 2012 International Conference on Statistics in Science Business and Engineering Empowering Decision Making with Statistical Sciences, 2012
    Jaundice is one of the most common neonate diseases on the first days of birth, caused by hyperbilirubinaemia of blood; and if it is failed to be controlled, it may lead to kernicterus and probable death, or severe neurotic defeats. The purpose of this study is an investigation on different reasons of neonate jaundice, including physical and environmental reasons. Methodology: Method of this study is descriptive and the participants of the research are all the neonates below 30 days, brought to one of the clinics in Meybod and Ardakan in Yazd province. Sampling method is randomly selected and sample size is 98. Information about participants age, sex, child health condition in birth, jaundice case history in child's life, his parents, sisters, brothers, type of childbearing, family economical situation, educational level of parents, the time of disease affection (month, season and year) and other general variations were recorded using a questionnaire, prepared for this purpose. Data analysis was done through V-Cramer, chi square test and CART model. The CART model with the accuracy of 73% revealed that three variations namely, jaundice case history in other children, child sex and the time of disease affection have meaningful relationship with the topic under investigation. Conclusion: Infant jaundice has relationship with child sex and jaundice case history in family, while no meaningful relation was observed between jaundice and parent's disease case history. The rate of Jaundice affection in summer is observed to be more than that in winter causing accidents to happen.
  • A probabilistic relational model for keyword extraction
    Alireza Pakgohar, Mohadeseh Khalili
    Icssbe 2012 Proceedings 2012 International Conference on Statistics in Science Business and Engineering Empowering Decision Making with Statistical Sciences, 2012
    A large portion of real-world data is stored relational. In constant, most statistical learning methods work only with “flat” data representations. Probabilistic relational models (PRMs) is one of the models considers the characteristics of relational data. PRMs allow the properties of an object to depend probabilistically both on other properties of that object and on properties of related objects. In this paper an attempt is made to heed keywords extraction. The keywords are not only essential for academic papers but also important for web page retrieval, text mining, and document classification. In this paper, a C++ algorithm is presented to extract keywords. The algorithm generates and extracts keywords from a poetry book. The C++ programming language is used to implement our algorithm in order to obtain experimental results. The results indicate that “Love”, “Heart”, and “Eyes” are the most important keywords of the selected book.
  • Determining the road defects impact on accident severity; based on vehicle situation after accident, an approach of logistic regression
    Alireza Esmaeili, Mohadeseh Khalili, Alireza Pakgohar
    Icssbe 2012 Proceedings 2012 International Conference on Statistics in Science Business and Engineering Empowering Decision Making with Statistical Sciences, 2012
    Safety and accident issues are considered as an important problem in the world. Road transportation issues would have a more conspicuous countenance in the country of Iran in which, over 94 percent of all transportations take place through roads. The roads' contribution to the traffic accidents at mean is 24 percent however this value is 36 percent in Iran. Many parameters, safety signs and equipment, Vertical and horizontal arc combination along the road and all the effective factors in decreasing the accidents, are considered when determining the safety level of the roads. Road defect is being considered as one of the essential factors causing accidents to happen. This article investigates the severity factor of the accident according to the ruined vehicle immovable situation after the accident. The results of this research has shown that most important factors reducing the safety on the suburban roads in Iran is “insufficient road width” pertaining to frequency and “Level difference between road & shoulder” pertaining to accident severity.
  • Assessment of key factors in attention to pedestrian crossing sign
    Amir Masoud Rahimi, Mojtaba Kazemi, Alireza Pakgohar
    Icssbe 2012 Proceedings 2012 International Conference on Statistics in Science Business and Engineering Empowering Decision Making with Statistical Sciences, 2012
  • The role of human factor in incidence and severity of road crashes based on the CART and LR regression: A data mining approach
    Alireza Pakgohar, Reza Sigari Tabrizi, Mohadeseh Khalili, Alireza Esmaeili
    Procedia Computer Science, 2011

RECENT SCHOLAR PUBLICATIONS

  • Examining the Effectiveness of Game-Based Critical Thinking Instruction on Anger Management and Social Adjustment of Second Grade Students in Yazd District One, Emphasizing New …
    A Pakgohar, E Parsaian
    Technology and Scholarship in Education , 2026
    2026
  • آنتروپی و اکستروپی توزیع انرژی موجک سیستم فراکتالی بالا-فرکانس ‎
    علیرضا پاک گوهر، سهیل شکری، ‎
    مجله علوم آماری 20, 1-22 , 2026 ‎
    2026
  • استفاده از روش دیمتل فازی در اولویت بندی ابزارهای رویکرد ناب در تولید ‎
    کبیری نائینی, پاک گوهر, شکری, سهیل, الهی ‎
    مجله تحقیق در عملیات در کاربردهای آن (ریاضی کاربردی)-دانشگاه آزاد لاهیجان … , 2025 ‎
    2025
  • Using the Fuzzy DEMATEL Method in Prioritizing Lean Approach Tools in Production
    M Kabiri Naeini, A Pak Gohar, S Shokri, Z Elahi
    Journal of Operational Research In Its Applications (Applied Mathematics … , 2025
    2025
  • A Quantile Approach to the Kullback-Leibler Divergence on Type-I Censored Variable and Record Values
    A Pakgohar, F Yousefzadeh
    Journal of Mathematical Extension 19 , 2025
    2025
    Citations: 1
  • A comprehension of the Burr type-II distribution based on records: Properties, estimation and prediction
    A Pakgohar, P Nasiri
    Journal of Statistical Research 59 (2), 325-342 , 2025
    2025
  • ارائه الگوی برنامه درسی مبتنی بر مهارت آموزی در نظام برنامه درسی دوره اول متوسطه ایران ‎
    زینب پایه دار اردکانی، ناصر محمدی احمدآبادی، علیرضا پاک گهر، ‎
    بیست و سومین کنفرانس بین المللی پژوهش در روانشناسی، مشاوره و علوم تربیتی، , 2025 ‎
    2025
  • بررسی رابطه برنامه درسی ضمنی با بهزیستی ذهنی با نقش میانجیگری خودناتوان سازی تحصیلی در دانش آموزان دختر دوره دوم مقطع متوسطه شهرستان اردکان ‎
    نرگس پایه دار اردکانی، ناصر محمدی احمدآبادی، علیرضا پاک گهر، ‎
    بیست و سومین کنفرانس بین المللی پژوهش در روانشناسی، مشاوره و علوم تربیتی، , 2025 ‎
    2025
  • Parameter Estimation and Bayesian Inference for the Inverse Gaussian Distribution
    A Pakgohar, H Mehrannia
    The 13th national statistics conference of Payame Noor University. Shiraz. Iran , 2025
    2025
    Citations: 1
  • Sample size calculation in clinical trial and animal studies
    A Pakgohar, H Mehrannia
    Iranian Journal of diabetes and Obesity , 2024
    2024
    Citations: 15
  • بررسی نقش اقامتگاه‌های بوم‌گردی در گردشگری پایدار و حفظ فرهنگ بومی (شهر میبد) ‎
    مؤیدفر, دهقان‌پور, پاک گوهر, دهقانی, مطهره ‎
    کاوش های جغرافیایی مناطق بیابانی 11 (2), 57-78 , 2024 ‎
    2024
  • Investigating the Role of Ecolodges in Sustainable Tourism and Preservation of Local Culture (Meybod City)
    S Moayedfar, Z Dehghan‌pour, A Pakgohar, M Dehghani
    The Journal of Geographical Research on Desert Areas 11 (2), 57-78 , 2024
    2024
    Citations: 1
  • An Analysis of Text Similarity Measures: Introducing a Lin Wang similarity measure
    M Pakgohar, Alireza and Fazli Aghdaei
    5th International Conference on Software Computing , 2024
    2024
  • Artificial Intelligence, Statistics and Big Data in Medicine and Healthcare
    APM Fazli
    5th International Conference on Software Computing , 2024
    2024
  • هوش مصنوعی، آمار و کلان داده در حوزه پزشکی و مراقبت های بهداشتی ‎
    علیرضا پاک گوهر، مهدی فضلی عقدایی ‎
    پنجمین کنفرانس بین المللی محاسبات نرم , 2024 ‎
    2024
  • Exploring the Burr type III distribution: Properties, stochastic orders, and information measures
    A Pakgohar
    Journal of Statistical Modelling: Theory and Applications 5 (1), 165-180 , 2024
    2024
    Citations: 2
  • Sample Size calculation based on research Approaches in Animal Studies
    A Pakgohar
    Journal of Biostatistics and Epidemiology 9 (4), 474-483 , 2023
    2023
    Citations: 5
  • بررسی عوامل موثر برتمایل به اقتصاد مشارکتی (مورد مطالعه؛ سکونتگاه مشارکتی) ‎
    روستائی, ندا, تقوی, شرافت, پاک گوهر ‎
    فصلنامه مطالعات مدیریت راهبردی 14 (55) , 2023 ‎
    2023
  • Investigating the effective factors on the tendency to participatory economics (Case Study: Participatory housing)
    ندا روستائی, نعیمه تقوی, ابوالفضل شرافت, علیرضا پاک گوهر ‎
    فصلنامه مطالعات مدیریت راهبردی 14 (55) , 2023 ‎
    2023
  • تبیین تمایل به اقتصاد مشارکتی در سکونت‌گاه مشارکتی ‎
    تقوی, نعیمه, روستائی, شرافت, پاک گوهر ‎
    فصلنامه مطالعات مدیریت راهبردی 14 (55), 161-189 , 2023 ‎
    2023

MOST CITED SCHOLAR PUBLICATIONS

  • The role of human factor in incidence and severity of road crashes based on the CART and LR regression: a data mining approach
    A Pakgohar, RS Tabrizi, M Khalili, A Esmaeili
    Procedia Computer Science 3, 764-769 , 2011
    2011
    Citations: 189
  • Using easy fit software for goodness-of-fit test and data generation
    H Mehrannia, A Pakgohar
    International Journal of Mathematical Archive 5 (1), 118-124 , 2014
    2014
    Citations: 46
  • The role of human factors in the incidence and severity of road accidents based on LR and CART regression models
    A Pakgohar, M Khalili, M Saffarzadeh
    Traffic Management Studies Quarterly 4 (13), 49-66 , 2009
    2009
    Citations: 20
  • Sample size calculation in clinical trial and animal studies
    A Pakgohar, H Mehrannia
    Iranian Journal of diabetes and Obesity , 2024
    2024
    Citations: 15
  • Logistic regression approach in road defects impact on accident severity
    M Khalili, A Pakgohar
    Journal of emerging technologies in web intelligence 5 (2), 132-135 , 2013
    2013
    Citations: 15
  • Investigation of sample size in qualitative sampling methods
    A Pakgohar, M Khalili
    Popularization of Science 12 (1), 270-297 , 2021
    2021
    Citations: 13
  • Determining the road defects impact on accident severity; based on vehicle situation after accident, an approach of logistic regression
    A Esmaeili, M Khalili, A Pakgohar
    2012 International Conference on Statistics in Science, Business and … , 2012
    2012
    Citations: 13
  • Achieving Sustainable Housing with the Aroach of Analyzing Physical, Social and Economic Indicators, Case Study: Sirjan City
    H Hekmatnia, A Pakgohar, A Bagheri Kashkouli
    Journal of Urban Ecology Researches 12 (25), 1-18 , 2022
    2022
    Citations: 9
  • The survey role of humanistic factor in incidence and intensity of road accident based on Logistic Regression and CART
    A Pakgohar, M Saffarzadeh, M Khalili
    Tehran: Applied Research Office of Traffic Police 13 (5), 49-66 , 2008
    2008
    Citations: 9
  • The study of the effect of safety belt on fatalities and physical injuries decrease based on crosstab tables and chi square independent test
    AR Pakgouhar, AR Esmaeili
    TRAFFIC MANAGEMENT STUDIES 4 (14), 55-70 , 2009
    2009
    Citations: 8
  • Statistical rules in scientific reports (the basics)
    A Pakgohar, H Mehrannia
    Iranian journal of diabetes and obesity , 2023
    2023
    Citations: 7
  • The Preliminary Plan for Budgeting the Costs of Social Training of Traffic
    M Behnood, A Pakgohar
    Organization of Transportation and Traffic Management, Tehran , 2008
    2008
    Citations: 6
  • Sample Size calculation based on research Approaches in Animal Studies
    A Pakgohar
    Journal of Biostatistics and Epidemiology 9 (4), 474-483 , 2023
    2023
    Citations: 5
  • Time series modeling of extreme losses values based on a spectral analysis approach
    SJ Tabatabaei, A Pakgohar
    Financial Research Journal 22 (4), 594-611 , 2021
    2021
    Citations: 5
  • Goodness of fit test using Lin-Wong divergence based on Type-I censored data
    A Pakgohar, A Habibirad, F Yousefzadeh
    Communications in Statistics-Simulation and Computation 49 (9), 2485-2504 , 2020
    2020
    Citations: 5
  • A probabilistic relational model for keyword extraction
    A Pakgohar, M Khalili
    2012 International Conference on Statistics in Science, Business and … , 2012
    2012
    Citations: 5
  • Impact of safety belts on reducing physical and psychological injuries in road accidents
    AR Pakgohar, AR Esmaeli
    Traffic Management Studies 4 (14), 55-70 , 2011
    2011
    Citations: 4
  • Road traffic accident reduction via GLM, CRT, LR regression models
    A PAKGOHAR, M KHALILI, M SAFARZADEH
    Journal of Research Police Science 12 (146), 77-106 , 2010
    2010
    Citations: 4
  • Lin–Wong divergence and relations on type I censored data
    A Pakgohar, A Habibirad, F Yousefzadeh
    Communications in Statistics-Theory and Methods 48 (19), 4804-4819 , 2019
    2019
    Citations: 3
  • Performance comparison of logistic regression and classification regression tree models for binary dependent variable
    A Pakgohar
    Statistical Sciences Extension 1 (2), 7-14 , 2016
    2016
    Citations: 3