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Fuzzy Transitive Relations

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模糊系统与数学 2010年第4期24卷 162-169页

作者： Ismat Beg samina Ashraf Centre for Advanced Studies in Mathematics Lahore University of Management Sciences 54792-LahorePAKISTAN

A modified definition of fuzzy transitivity is *** properties of this new definition are *** of these new properties of transitivity on equivalence relations is also studied.

关键词： Fuzzy Relations Transitivity Order Equivalence Approximate Indistinguishability

Two loop low temperature corrections to electron self energy

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Chinese Physics C 2011年第7期35卷 608-611页

作者： Mahnaz Q. Haseeb samina S. Masood Department of Physics COMSATS Institute of Information Technology Islamabad Pakistan Department of Physics University of Houston Clear Lake Houston TX 77058

We recalculate the two loop corrections in the background heat bath using real time formalism. The procedure of the integrations of loop momenta with dependence on finite temperature before the momenta without it has been followed. We determine the mass and wavefunction renormalization constants in the low temperature limit of QED, for the first time with this preferred order of integrations. The correction to electron mass and spinors in this limit is important in the early universe at the time of primordial nucleosynthesis as well as in astrophysics.

关键词： renormalization finite temperature field theory electron self energy two-loop corrections

Institutions and FDI:evidence from developed and developing countries

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Financial Innovation 2019年第1期5卷 122-141页

作者： samina Sabir Anum Rafique Kamran Abbas Kashmir Institute of Economics University of Azad Jammu&KashmirMuzaffarabadAzad KashmirPakistan Department of Statistics University of Azad Jammu&KashmirMuzaffarabadPakistan

This study investigates the impact of institutional quality on Foreign Direct Investment(FDI)inflows using panel data for low,lower-middle,upper-middle and high-income countries for the sample period of 1996-2016 using the system Generalized Method of Moments(GMM).The empirical results confirm that institutional quality has a positive impact on FDI in all group of *** magnitude of the coefficients of control of corruption,government effectiveness,political stability,regulatory quality,rule of law,and voice and accountability for FDI inflows are greater in developed countries than in developing *** conclude that institutional quality is a more important determinant of FDI in developed countries than in developed ***,GDP per capita,agriculture value-added as a percentage of GDP,and inflation influence FDI inflows negatively in developed countries,while GDP per capita,trade openness,agriculture value-added as a percentage of GDP,and infrastructure have positive and statistically significant impacts on FDI inflows in developing *** openness as a percentage of GDP and infrastructure positively affect FDI in developed *** our analysis,we infer that institutional quality is a more important determinant of FDI in developed countries than in developing countries.

关键词： Institutional quality FDI Economic development Panel data

Identity and Nation in Shamsie's Kartography and Kureishi's The Buddha of Suburbia

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Fudan Journal of the Humanities and Social Sciences 2021年第3期14卷 483-501页

作者： samina Akhtar Muhammad Imran Wei Xiaofei Yuee Chen School of Foreign Languages Shanghai Jiao Tong University800 Dongchuan RoadShanghai 200240People's Republic of China School of Foreign Languages Shanghai University of Finance and Economics777 Guoding RoadShanghai 200433People's Republic of China

This article focuses on postcolonial Pakistan,which is divided on ethnic,economic,religious,linguistic,and political lines,and reveals the negotiations,sufferings and experiences of racism and *** the lens of“postcolonial nationalism”,this study examines the heightened consciousness of“national identity”,quest for“belonging”,and the loss of“continuity”as depicted in Kamila Shamsie’s Kartography and Hanif Kureishi's The Buddha of *** the current“war on ter-ror”scenario,many Pakistani people are failing to find security and shelter within and across *** corrupt establishment as well as the religious and political mafias has deprived and shattered people’s belief in themselves by crushing their dreams of *** Pakistani people have stood on the verge of their "promised land" only to watch how callously their beloved home is stricken by the superseding local and global powers under the guises of patriotism and ***,the severe consequences of 9/11 have generated a strong sense of alienation,insecurity,and recurrent fear in Pakistani diaspora,who have failed to assimilate in their host countries and remain in search of“home”.

关键词： Kartography The Buddha of Suburbia Post-colonialism Home National identity

Determinants of COVID-19 vaccine acceptance and encountered side-effects among the vaccinated in Bangladesh

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Asian Pacific Journal of Tropical Medicine 2021年第8期14卷 341-349页

作者： Md.Iftakhar Parvej samina Sultana Mimma Tabassum Seefat E Mannan Firoz Ahmed Department of Statistics Noakhali Science and Technology UniversityNoakhali 3814Bangladesh Department of Obstetrics and Gynecology President Abdul Hamid Medical CollegeBangladesh Department of Social Work Noakhali Science and Technology UniversityNoakhali 3814Bangladesh Department of Microbiology Noakhali science and Technology UniversityNoakhali 3814Bangladesh

Objective:To identify the acceptance of the vaccine based on factors influencing the vaccination program and the side effects from vaccinated ***:A cross-sectional online survey of 1529 Bangladeshi adults(≥18 years)was conducted between 17 April,2021 and 26 April,*** analysis of the data included Chi-square test and multinomial logistic regression ***:In total,67.04%of the participants were willing to accept a COVID-19 vaccine,and 45.00%of them in our study had already *** Bangladeshi people were more likely to accept COVID-19 vaccine if the vaccine reduces risk of infectious disease and has no associated health risk after receiving *** the respondents,religions,education level,living area(urban),belif that vaccines protect against infectious diseases and vaccines do not have health-related risk and vaccination was significantly associated with the acceptance of COVID-19 ***,people’s perception on development of natural immunity rather than receiving vaccines was also positively *** than half(57.41%)reported minor side effects such as fever,muscle pain and headache after getting vaccine ***:This study revealed that the acceptance rate was influenced by socio-demographic and health-related characteristics and people are not afraid of this vaccine if they faced minor side effects after receiving *** findings might help the government and policymakers of Bangladesh to implement necessary steps to accomplish this vaccination program effectively.

关键词： COVID-19 Vaccination Determinants Vaccine acceptance Side-effects Bangladesh

Machine Learning Approach for COVID-19 Detection on Twitter

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Computers, Materials & Continua 2021年第8期68卷 2231-2247页

作者： samina Amin M.Irfan Uddin Heyam H.Al-Baity M.Ali Zeb M.Abrar Khan Institute of Computing Kohat University of Science and TechnologyKohat26000Pakistan Department of Information Technology College of Computer and Information SciencesKing Saud UniversityRiyadh11543Saudi Arabia

Social networking services(SNSs)provide massive data that can be a very influential source of information during pandemic *** study shows that social media analysis can be used as a crisis detector(e.g.,understanding the sentiment of social media users regarding various pandemic outbreaks).The novel Coronavirus Disease-19(COVID-19),commonly known as coronavirus,has affected everyone worldwide in *** Twitter data have revealed the status of the COVID-19 outbreak in the most affected *** study focuses on identifying COVID-19 patients using tweets without requiring medical records to find the COVID-19 pandemic in Twitter messages(tweets).For this purpose,we propose herein an intelligent model using traditional machine learning-based approaches,such as support vector machine(SVM),logistic regression(LR),naïve Bayes(NB),random forest(RF),and decision tree(DT)with the help of the term frequency inverse document frequency(TF-IDF)to detect the COVID-19 pandemic in Twitter *** proposed intelligent traditional machine learning-based model classifies Twitter messages into four categories,namely,confirmed deaths,recovered,and *** the experimental analysis,the tweet data on the COVID-19 pandemic are analyzed to evaluate the results of traditional machine learning approaches.A benchmark dataset for COVID-19 on Twitter messages is developed and can be used for future research *** experiments show that the results of the proposed approach are promising in detecting the COVID-19 pandemic in Twitter messages with overall accuracy,precision,recall,and F1 score between 70%and 80%and the confusion matrix for machine learning approaches(i.e.,SVM,NB,LR,RF,and DT)with the TF-IDF feature extraction technique.

关键词： Artificial intelligence coronavirus COVID-19 pandemic social network Twitter machine learning natural language processing

Molecular Characterization of Bacterial Community Composition in the Rhizosphere of Invasive Plant Species Amur Honeysuckle (<i>Lonicera maackii</i>) in an Urban Wetland Forest

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Advances in Microbiology 2021年第9期11卷 469-487页

作者： Azeem Ahmad samina Akbar Department of Biology College of Arts and Sciences Marian University Indianapolis USA College of Osteopathic Medicine Marian University Indianapolis USA

The goal of this research was to determine the effects of the growth of invasive plant Amur Honeysuckle (Lonicera maackii) on the rhizosphere bacterial community composition, and diversity in an urban wetland forest ecosystem. Bacterial communities from the rhizosphere of 5 L. maackii plants and control bulk soils that did not have any L. maackii were investigated at Nina Mason Pulliam EcoLab (NMPE) using a culture-independent pipeline. Bacterial communities were characterized by PCR amplification and cloning 16S rRNA gene fragments following total DNA isolation from the soil samples. Microbial communities associated with both L. maackii rhizosphere and control sites showed high bacterial diversity within each site and taxa unique to individual sites were observed. Phylogenetic analyses revealed 80% of 400 16S rDNA clones were classified as α-, β- and γ-Proteobacteria, Acidobacteria, Actinobacteria, Cytophaga-Flexibacter-Bacteroides (CFB) group, and Verrucomicrobia. Members of the Proteobacteria and Acidobacterium represented 66.5% and 14.5% of the clone library, respectively, whereas the remaining bacterial divisions each comprised less than 7% of the clone library. Twenty-five 16S rDNA clones could not be classified into any known bacterial divisions. Statistical analyses showed significant differences in the presence of L. maackii on the proportions of 16S rDNA clones affiliated with Proteobacteria and Acidobacterium, suggesting bacterial community composition and structure does significantly change in the presence of L. maackii. However, sequence-based community analysis and the corresponding lack of intact microbial cultures limit understanding of the potential influences of enriched microbial taxa on plant hosts and their roles in ecosystem functioning.

关键词： Bacterium Rhizosphere Forest Soils 16S rRNA Lonicera maackii

On the Number of Cycles in a Graph

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Open Journal of Discrete Mathematics 2016年第2期6卷 41-69页

作者： Nazanin Movarraei samina A. Boxwala Department of Mathematics University of Pune Pune India

In this paper, we obtain explicit formulae for the number of 7-cycles and the total number of cycles of lengths 6 and 7 which contain a specific vertex vi in a simple graph G, in terms of the adjacency matrix and with... 详细信息

关键词： Adjacency Matrix Cycle Graph Theory Path Subgraph Walk

Nucleosynthesis in Hot and Dense Media

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Journal of Modern Physics 2014年第5期5卷 296-308页

作者： samina S. Masood Department of Physics University of Houston Clear Lake Houston USA

We study the finite temperature and density effects on beta decay rates to compute their contributions to nucleosynthesis. QED type corrections to beta decay from the hot and dense background are estimated in terms of the statistical corrections to the self-mass of an electron. For this purpose, we re-examine the hot and dense background contributions to the electron mass and compute its effect to the beta decay rate, helium yield, energy density of the universe as well as the change in neutrino temperature from the first order contribution to the self-mass of electrons during these processes. We explicitly show that the thermal contribution to the helium abundance at T = m of a cooling universe (0.045 percent) is higher than the corresponding contribution to helium abundance of a heating universe (0.031 percent) due to the existence of hot fermions before the beginning of nucleosynthesis and their absence after the nucleosynthesis, in the early universe. Thermal contribution to helium abundance was a simple quadratic function of temperature, before and after the nucleosynthesis. However, this quadratic behavior was not the same before the decoupling temperature due to weak interactions;so the nucleosynthesis did not even start before the universe had cooled down to the neutrino decoupling temperatures and QED became a dominant theory in the presence of a high concentration of charged fermions. It is also explicitly shown that the chemical potential in the core of supermassive and superdense stars affect beta decay and their helium abundance but the background contributions depend on the ratio between temperature and chemical potential and not the chemical potential or temperature only. We calculate the hot and dense background contributions for m = T = μ. It has been noticed that temperature plays a role in regulating parameter in an extremely dense systems. Therefore, for extremely dense systems, temperature has to be large enough to get the expected value of heli

关键词： Nucleosynthesis Beta Decay Compact Stars Hot and Dense Media