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Source code fragment summarization with small-scale crowdsourcing based features

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Frontiers of Computer Science 2016年第3期10卷 504-517页

作者： Najam nazar He JIANG Guojun GAO Tao ZHANG Xiaochen LI Zhilei REN Key Laboratory for Ubiquitous Network and Service Software of Liaoning Province School of Software Dalian University of Technology Dalian 116621 China State Key Laboratory of Software Engineering Wuhan University Wuhan 430072 China Department of Computing The Hong Kong Polytechnic University Hong Kong China

Recent studies have applied different approaches for summarizing software artifacts, and yet very few efforts have been made in summarizing the source code fragments available on web. This paper investigates the feasibility of generating code fragment summaries by using supervised learning algorithms. We hire a crowd of ten individuals from the same work place to extract source code features on a cor- pus of 127 code fragments retrieved from Eclipse and Net- Beans Official frequently asked questions （FAQs）. Human an- notators suggest summary lines. Our machine learning algo- rithms produce better results with the precision of 82% and perform statistically better than existing code fragment classi- fiers. Evaluation of algorithms on several statistical measures endorses our result. This result is promising when employing mechanisms such as data-driven crowd enlistment improve the efficacy of existing code fragment classifiers.

关键词： summarizing code fragments supervised learning crowdsourcing

Photosynthesis, Growth and Antioxidant Metabolism in Mustard (Brassica juncea L.) Cultivars Differing in Cadmium Tolerance

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Agricultural Sciences in China 2010年第4期9卷 519-527页

作者： Noushina Iqbal Asim Masood Rahat nazar Shabina Syeed Nafees A Khan Department of Botany Aligarh Muslim University

Two mustard （Brassica juncea L. Czern and Coss.） cultivars, Pusa Jai Kisan and SS2 differing in cadmium （Cd） tolerance were treated with 0, 25 and 50 umol L-1 Cd to study the physiological basis of difference in Cd tolerance. Cultivar SS2 （Cd sensitive） accumulated greater Cd in leaves than Pusa Jai Kisan （Cd tolerant）. Further, SS2 also exhibited higher contents of thiobarbituric acid reactive substances （TBARS） and H2O2 and electrolyte leakage. However, the activities of antioxidant enzymes, catalase （CAT）, ascorbate peroxidase （APX）, dehydroascorbate reduetase （DHAR）, and glutathione reductase （GR） were higher in Pusa Jai Kisan than those in SS2. Contrarily, the activity of superoxide dismutase （SOD） was higher in SS2 than that in Pusa Jai Kisan and was the greatest at 25 umol L-1 Cd. Treatment of 25 umol L-1 Cd induced the maximum activity of enzymes. However, the activity of GR increased up to 50 umol L-1 Cd in both the cultivars. The non-enzymatic antioxidants ascorbate （AsA） and glutathione （GSH） were higher in Pusa Jai Kisan than that in SS2, whereas dehydroascorbate （DHA） and oxidized glutathione （GSSG） were higher in SS2. Photosynthesis and growth were adversely and maximally decreased by 50 umol L-1 Cd treatment in both the cultivars, but SS2 exhibited greater reductions. The protection of photosynthesis and growth and lesser reduction in Pusa Jai Kisan were associated with its capacity to restrict accumulation of Cd in leaves resulting in lower level of TBARS and H2O2 and electrolyte leakage. Moreover, Pusa Jai Kisan exhibited efficient antioxidant metabolism for removal of Cd-induced reactive oxygen species.

关键词： antioxidant metabolism cadmium oxidative stress photosynthesis

Identification of functional tumor necrosis factor-alpha promoter variants associated with Helicobacter pylori infection in the Sudanese population: Computational approach

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World Journal of Gastroenterology 2022年第2期28卷 242-262页

作者： Abeer Babiker Idris Alaa B Idris Manal A Gumaa Mohammed Babiker Idris Amanda Elgoraish Mohamed Mansour Dalia Allam Bashir MO Arbab nazar Beirag El-Amin M Ibrahim Mohamed A Hassan Department of Agricultural Science and Technology Institute of Natural and Applied SciencesErciyes UniversityKayseri 38039Turkey Department of Medical Microbiology Faculty of Medical Laboratory SciencesUniversity of KhartoumKhartoum 11111Sudan Department of Neurosurgery Ribat University HospitalKhartoum 11111Sudan BioMérieux Clinical and Application Advisor Al-Jeel Medical Co.Riyadh 11422Saudi Arabia Department of Epidemiology Tropical Medicine Research InstituteKhartoum 11111Sudan Department of Gastroenterology Ibn Sina Specialized HospitalKhartoum 11111Sudan Department of Gastroenterology Modern Medical CentreKhartoum 11111Sudan Biosciences College of HealthMedicine and Life SciencesBrunel UniversityLondon UB83PHUxbridgeUnited Kingdom Department of Translation Bioinformatics Detavax BiotechKayseri 38350Turkey

BACKGROUND Helicobacter pylori(***)is a ubiquitous bacterium that affects nearly half of the world’s population with a high morbidity and mortality *** within the tumor necrosis factor-alpha(TNF-A)promoter region are considered a possible genetic basis for this *** To functionally characterize the genetic variations in the TNF-A 5’-region(-584 to+107)of Sudanese patients infected with *** using in silico *** An observational study was carried out in major public and private hospitals in Khartoum state.A total of 122 gastric biopsies were taken from patients who had been referred for *** DNA was *** of the TNF-A-1030 polymorphism was performed using PCR with confronting two-pair primer to investigate its association with the susceptibility to *** infection in the Sudanese ***,Sanger sequencing was applied to detect single nucleotide polymorphisms in the 5’-region(-584 to+107)of TNF-A in ***-infected *** analyses were used to predict whether these mutations would alter transcription factor binding sites or composite regulatory elements in this region.A comparative profiling analysis was conducted in 11 species using the ECR browser and multiple-sequence local alignment and visualization search engine to investigate the possible ***,a multivariate logistic regression model was constructed to estimate odds ratios and their 95%confidence intervals for the association between TNF-A-1030,sociodemographic characteristics and *** *** were statistically significant if PA,-76)was located at the in silico-predicted promoter region(-146 to+10),and it was predicted to alter transcription factor b

关键词： 5’-region Promoter TNF-A Helicobacter pylori In silico analysis Sudan

Access Control and Authorization in Smart Homes: A Survey

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Tsinghua Science and Technology 2021年第6期26卷 906-917页

作者： Ziarmal nazar Mohammad Fadi Farha Adnan O.M Abuassba Shunkun Yang Fang Zhou School of Computer and Communication Engineering University of Science and Technology BeijingBeijing 100083China School of Computer Studies Arab Open UniversityBeijing 100191China School of Reliability and Systems Engineering Beihang UniversityRamallah 4375Palestine

With the rapid development of cyberspace and smart home technology, human life is changing to a new virtual dimension with several promises for improving its quality. Moreover, the heterogeneous, dynamic, and internet-connected nature of smart homes brings many privacy and security difficulties. Unauthorized access to the smart home system is one of the most harmful actions and can cause several trust problems and relationship conflicts between family members and invoke home privacy issues. Access control is one of the best solutions for handling this threat, and it has been used to protect smart homes and other Internet of Things domains for many years. This survey reviews existing access control schemes for smart homes, which concern the essential authorization requirements and challenges that need to be considered while designing an authorization framework for smart homes. Furthermore, we note the most critical challenges that other access control solutions neglect for smart homes.

关键词： access control smart home authorization frameworks

Influence of Hartmann Number on Convective Flow of Maxwell Fluid between Two Hot Parallel Plates through Porous Medium Subject to Arbitrary Shear Stress at the Boundary

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Journal of Applied Mathematics and Physics 2022年第1期10卷 160-171页

作者： Adnan Ahmad Zaib Un Nisa Mudassar nazar Muhammad Imran Asjad Mushtaq Ahmad Centre for Advanced Studies in Pure and Applied Mathematics Bahauddin Zakariya University Multan Pakistan Department of Mathematics University of Education Lahore Multan Campus Multan Pakistan School of Mathematical Sciences University of Science and Technology of China Hefei China Department of Mathematics University of Management and Technology Lahore Pakistan

Natural convection flow of unsteady Maxwell fluid with the effects of constant magnetic force in the course of a porous media is investigated in this research work. Fluid motion between a channel of parallel plates is tempted by time dependent shear stress applied on one plate. The governing partial differential equations of a model under consideration are transformed into ordinary differential equations by Laplace transform method and then solved for temperature and velocity fields. The obtained results for temperature fields are expressed in terms of complementary error function. The influences of involved parameters likes Hartmann number, Grashf number, Prandlt number and porosity parameter, on temperature and velocity profiles are shown graphically. There is no such result regarding Maxwell fluid in the existing literature.

关键词： Natural Convection Maxwell Fluid Hot Parallel Plates MHD Porous Media Shear Stress

A Learning Based Brain Tumor Detection System

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Computers, Materials & Continua 2019年第6期59卷 713-727页

作者： Sultan Noman Qasem Amar nazar Attia Qamar Shahaboddin Shamshirband Ahmad Karim Computer Science Department College of Computer and information SciencesAl Imam Mohammad Ibn Saud Islamic University(IMSIU)RiyadhSaudi Arabia Computer Science Department Faculty of Applied SciencesTaiz UniversityTaizYemen Department of Computer Science Bahauddin Zakariya UniversityPakistan Department of Information Technology Bahauddin Zakariya UniversityPakistan Department for Management of Science and Technology Development Ton Duc Thang UniversityHo Chi Minh CityVietnam Faculty of Information Technology Ton Duc Thang UniversityHo Chi Minh CityVietnam

Brain tumor is one of the most dangerous disease that causes due to uncontrollable and abnormal cell *** this paper,we have used MRI brain scan in comparison with CT brain scan as it is less harmful to detect brain *** considered watershed segmentation technique for brain tumor *** proposed methodology is divided as follows:pre-processing,computing foreground applying watershed,extract and supply features to machine learning ***,this study is tested on big data set of images and we achieved acceptable accuracy from K-NN classification algorithm in detection of brain tumor.

关键词： Magnetic resonance imaging brain tumor watershed segmentation K-NN classification

Solutions of Heat-Like and Wave-Like Equations with Variable Coefficients by Means of the Homotopy Analysis Method

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Chinese Physics Letters 2008年第2期25卷 589-592页

作者： A. K. Alomari M. S. M. Noorani R. nazar School of Mathematical Sciences University Kebangsaan Malaysia 43600 UKM Bangi Selangor Malaysia

We employ the homotopy analysis method （HAM） to obtain approximate analytical solutions to the heat-like and wave-like equations. The HAM contains the auxiliary parameter h, which provides a convenient way of controlling the convergence region of series solutions. The analysis is accompanied by several linear and nonlinear heat-like and wave-like equations with initial boundary value problems. The results obtained prove that HAM is very effective and simple with less error than the Adomian decomposition method and the variational iteration method.

关键词： pulsars x-ray spectra relativity and gravitation redshift

Enhanced urease inhibition activity of Ag nanomaterials capped with N-substituted methyl 5-acetamido-β-resorcylate

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Progress in Natural Science:Materials International 2019年第2期29卷 129-137页

作者： Syeda Sohaila Naz Muhammad Raza Shah nazar Ul Islam Syed Sartaj Alam Nanosciences and Technology Department National Centre for Physics Quaid-i-Azam University Campus ICCBS H.E.J.Research Institute of Chemistry University of Karachi Institute of Chemical Sciences University of Peshawar Sarhad University of Science and Information Technology Department of Plant Pathology The University of AgriculturePeshawar Pakistan

Medically, bacterial ureases are important virulent factors and are used for treatment of peptic ulcers and urinary tones. Reported urease inhibitors are associated with various side effects including antibiotic resistance as a major one. Still there is an urgent need to synthesize new urease inhibitors. In this context we have synthesized new urease inhibitor i.e. AgL that is composed of Ag nanomaterials capped with N-substituted methyl 5-acetamido-β-resorcylate(L). The conjugation of L to silver was confirmed through FTIR, UV–vis and TEM *** silver nanomaterials(Ag) were also prepared. The stability of AgL nanostructures was determined against various parameters(temperature, high salt concentration, pH) and found to be stable. The in vitro antimicrobial(antibacterial, antifungal), enzyme inhibition(xanthine oxidase, urease, carbonic anhydrase, α-chymotrypsin,cholinesterase) and antioxidant activities of AgL were investigated and compared with Ag, L and standard *** comparison to other bioactivities, AgL shows statistically enhanced selective enzyme inhibition activity against urease enzyme. Urease inhibition activity of AgL was significantly greater than standard drug(thiourea),L and Ag. On a per weight basis, AgL required about 11–18 times less amount of L for inhibition of urease enzyme.

关键词： β-Resorcylic acid N-Substituted methyl 5-acetamido-β-resorcylate Silver nanomaterials Enhanced urease inhibition activity

Flow on oscillating rectangular duct for Maxwell fluid

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Applied Mathematics and Mechanics(English Edition) 2012年第6期33卷 717-730页

作者： M.nazar F.SHAHID M.SAEED AKRAM Q.SULTAN Centre for Advanced Studies in Pure and Applied Mathematics Bahauddin Zakariya University

This paper presents an analysis for the unsteady flow of an incompress- ible Maxwell fluid in an oscillating rectangular cross section. By using the Fourier and Laplace transforms as mathematical tools, the solutions are presented as a sum of the steady-state and transient solutions. For large time, when the transients disappear, the solution is represented by the steady-state solution. The solutions for the Newtonian fluids appear as limiting cases of the solutions obtained here. In the absence of the fre- quency of oscillations, we obtain the problem for the flow of the Maxwell fluid in a duct of a rectangular cross-section moving parallel to its length. Final!y, the required time to reach the steady-state for sine oscillations of the rectangular duct is obtained by graphical illustrations for different parameters. Moreover, the graphs are sketched for the velocity.

关键词： Maxwell fluid oscillating rectangular duct velocity field