LH-moment estimation of a four parameter kappa distribution with hydrologic applications

Murshed, Md. Sharwar,Seo, Yun Am,Park, Jeong-Soo Springer-Verlag 2014 Stochastic Environmental Research and Risk Assessm Vol.28 No.2

Use of beta-P distribution for modeling hydrologic events

Murshed, Md. Sharwar,Seo, Yun Am,Park, Jeong-Soo,Lee, Youngsaeng The Korean Statistical Society 2018 Communications for statistical applications and me Vol.25 No.1

Parametric method of flood frequency analysis involves fitting of a probability distribution to observed flood data. When record length at a given site is relatively shorter and hard to apply the asymptotic theory, an alternative distribution to the generalized extreme value (GEV) distribution is often used. In this study, we consider the beta-P distribution (BPD) as an alternative to the GEV and other well-known distributions for modeling extreme events of small or moderate samples as well as highly skewed or heavy tailed data. The L-moments ratio diagram shows that special cases of the BPD include the generalized logistic, three-parameter log-normal, and GEV distributions. To estimate the parameters in the distribution, the method of moments, L-moments, and maximum likelihood estimation methods are considered. A Monte-Carlo study is then conducted to compare these three estimation methods. Our result suggests that the L-moments estimator works better than the other estimators for this model of small or moderate samples. Two applications to the annual maximum stream flow of Colorado and the rainfall data from cloud seeding experiments in Southern Florida are reported to show the usefulness of the BPD for modeling hydrologic events. In these examples, BPD turns out to work better than $beta-{\kappa}$, Gumbel, and GEV distributions.

LH-Moments of Some Distributions Useful in Hydrology

Murshed, Md. Sharwar,Park, Byung-Jun,Jeong, Bo-Yoon,Park, Jeong-Soo The Korean Statistical Society 2009 Communications for statistical applications and me Vol.16 No.4

It is already known from the previous study that flood seems to have heavier tail. Therefore, to make prediction of future extreme label, some agreement of tail behavior of extreme data is highly required. The LH-moments estimation method, the generalized form of L-moments is an useful method of characterizing the upper part of the distribution. LH-moments are based on linear combination of higher order statistics. In this study, we have formulated LH-moments of five distributions useful in hydrology such as, two types of three parameter kappa distributions, beta-${\kappa}$ distribution, beta-p distribution and a generalized Gumbel distribution. Using LH-moments reduces the undue influences that small sample may have on the estimation of large return period events.

Survey of Dicrocoelium dendriticum infection in imported Romani and local sheep (Ovis aries), and potential epidemiological role in Saudi Arabia

Mutee Murshed,Saleh Al-Quraishy,Mohammed M Mares,Osama B. Mohammed,Hossam M. A. Aljawdah 한국축산학회 2022 한국축산학회지 Vol.64 No.6

The epidemiology of parasite infection in local and imported breeds is quite an essential topic in the meat industry and human health. This study aims to determine the prevalence of Dicrocoelium dendriticum in local sheep breeds (Naemi, Najdi, and Harri) and imported breeds from Romania (Romani breed) and the epidemiology of the infection in Saudi Arabia. Morphological description, the relationship between dicrocoeliasis and sex, age, and histological changes were also presented. A total of 6845 slaughtered sheep at Riyadh Automated slaughterhouse were investigated and followed up for 4 months between 2020–2021. It included 4,680 local breeds and 2,165 imported Romanian breeds. Fecal samples and livers and gallbladders from slaughtered animals were examined for apparent pathological lesions. The results indicated that the infection rate in slaughtered animals was 10.6% in imported Romani sheep and 0.9% in the local Naeimi breed. After identifying the parasite morphologically, negative results were obtained from examining feces, gallbladders, and livers of Najdi and Harry sheep breeds. The mean number of eggs per 20 μL/gallbladder was low (72.78 ± 17.8: 76.11 ± 5.07), medium (334.59 ± 90.6: 292.91 ± 26.63), and high (1113.2 ± 22.3: 1004 ± 143.4) in imported and Naeime sheep, respectively. Significant differences were found between gender and age (males and females were 3.67% and 6.31%; > 2 years 4.39%, 1–2 years 4.22%, and 1 year 3.53%) respectively. Histopathological lesions in the liver were more pronounced. Our survey confirmed the presence of D. dendriticum in imported Romani and local Naeimi sheep, and the potential role of imported sheep in the epidemiology of dicrocoeliasis in Saudi Arabia.

Tradable Permits in Greenhouse Gas Emissions: A Macroeconomic Analysis in the North-South Context

S. Mansoob Murshed 서울대학교 경제연구소 1995 Seoul journal of economics Vol.8 No.3

The paper presents an analytical macroeconomic model of North-South interaction covering a scheme of tradable permits in greenhouse gas emission encompassing the two regions. The delineation between the fix-price North and the flex-price South is along traditional structuralist lines. A number of parameter changes are analyzed including transfers to and from the South, as well as changes in emission efficiency in the two regions. Transfers from North to South could induce the participation of the South in global schemes for environmental control, as well as be linked to improvements in the South's emission efficiency.

When Will WTO Membership Signal Commitment to Free Trade by A Developing Country

( S. Mansoob Murshed ) 세종대학교 경제통합연구소 (구 세종대학교 국제경제연구소) 2004 Journal of Economic Integration Vol.19 No.2

A signalling game involving three parties: a developing country, the WTO and a developed country is outlined. The developing country might be tempted to renege or deviate from free trade. Although the costs of reneging from free trade result in a loss of credibility, the costs come in the future and are discounted. Short-term gains include revenues from import taxes that are important to the public finances of low-income countries. Membership of a rules based organisation such as the WTO can act as a credible commitment device. In these circumstances, however, the South`s commitment to free trade depends upon a clear signal from the North that it too is committed to free trade. Otherwise the South will continue to deviate from optimal and freer trade policies.

When Will WTO Membership Signal commitment to Free Trade by A Deveoping Country

S. Mansoob Murshed 세종대학교 경제통합연구소 2004 Journal of Economic Integration Vol.19 No.2

A signalling game involving three parties: a developing country, the WTO and a developed country is outlined. The developing country might be tempted to renege or deviate from free trade. Although the costs of reneging from free trade result in a loss of credibility, the costs come in the future and are discounted. Short-term gains include revenues from import taxes that are important to the public finances of low-income countries. Membership of a rules based organisation such as the WTO can act as a credible commitment device. In these circumstances, however, the South’s commitment to free trade depends upon a clear signal from the North that it too is committed to free trade. Otherwise the South will continue to deviate from optimal and freer trade policies. A signalling game involving three parties: a developing country, the WTO and a developed country is outlined. The developing country might be tempted to renege or deviate from free trade. Although the costs of reneging from free trade result in a loss of credibility, the costs come in the future and are discounted. Short-term gains include revenues from import taxes that are important to the public finances of low-income countries. Membership of a rules based organisation such as the WTO can act as a credible commitment device. In these circumstances, however, the South’s commitment to free trade depends upon a clear signal from the North that it too is committed to free trade. Otherwise the South will continue to deviate from optimal and freer trade policies.

A COMPARATIVE ANALYSIS BETWEEN BANGLADESHI AND KOREAN LEGAL FRAMEWORKS FOR COMBATING CYBERCRIME TO ENSURE CYBER SECURITY

( Md. Mahboob Murshed ) 고려대학교 법학연구원 2016 Korea University Law Review Vol.19 No.-

The skyrocketing proliferation of internet based activities triggers rapid growth of cybercrimes worldwide. Bangladesh, the most densely populated country in the world having 48.37 million internet users,1 tops list of countries under mobile malware and off line attacks.2 On the other hand the Republic of Korea (ROK) with almost one third population of Bangladesh is more vulnerable to cyberattack and cybercrime due to its tremendous expansion of e-commerce and m-commerce. In this article a comparative analysis has been made between major laws of Bangladesh and Korea that deal with cybercrimes and specific recommendations have been made to improve the legal and Institutional Frameworks of Bangladesh as well as that of ROK on specific findings of the study. Particular attention is given on investigation, prosecution and trial of cybercrimes and laws have been examined in the light of the UNDOC Comprehensive Study on Cybercrime, 2013 and the Convention on Cybercrime, 2001. The Article explores answers of questions such as how efficient the Korean legal regime is in dealing with the cybercrime to ensure cybersecurity in Korea. How Bangladesh may adopt an adequate legal framework to protect its cyberspace from cybercrime? How the Judiciary of Bangladesh may effectively resolve the cases of cybercrime and last but not the least how the draft Cybercrime Act and E-Service Law of Bangladesh may resolve the issues like effective investigation of cybercrime, incorporate a sound definition of cybercrime and provide an effective mechanism of trying cybercrimes in the light of Korean experience.

THE CLASH OF CIVILIZATIONS AND THE INTERACTION BETWEEN FEAR AND HATRED

Syed Mansoob Murshed 한국외국어대학교 국제지역연구센터 2011 International Area Studies Review Vol.14 No.1

This paper models conflictive interaction between a West European state and a domestic dissident immigrant Muslim minority group in terms of fear and hatred. The genesis and production of both phenomena are modelled. Identity is crucial and provides the micro-foundations of dissident Muslim behaviour by solving the collective action problem; however, complex multiple identities are possible. Hatred of the West arises both because of the economic disadvantage experienced by Muslims in Europe, as well as historical grievances and contemporary foreign policy deemed to be against the Muslim world. The fear of visible Muslim minorities among the European host population may be partially a result of strident propaganda. The innovations of this paper lie in modelling the interaction between fear (treated like a public good) and hatred (a club good), as well as allowing multiple identities amongst dissidents. Policy implications include creating space allowing Muslim migrants to merge their cultural background with their adopted European identity, and redressing some of the economic disadvantage experienced by Muslims.

Generalized Extreme Value Distribution using r-largest Order Statistics with Climate Application

Md.S.Murshed,김한메울,박정수 한국자료분석학회 2007 Journal of the Korean Data Analysis Society Vol.9 No.4

This paper deals with usefulness of generalized extreme value distribution(r-GEVD) based on the r-largest order statistics. It is shown by simulation that using r-GEVD is better than using just the ordinary GEVD in estimating tail quantiles. Three parameters of GEVD are estimated by the method of maximum likelihood(MLE) and penalized maximum likelihood estimator(PMLE). This study compares the performance of two methods for several sample sizes and it is also shown that for small sample size, the mean square error of PMLE is magnificently improved than that of MLE with the concern of different extreme upper tail quantiles. The PMLE is employed with a suitably chosen beta penalty. The algorithm is developed for generating random numbers from r-GEVD. This approach is applied to extreme daily rainfall data for Seoul Korea. The return level of heavy rainfall is calculated from the r-GEVD model.