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An EFSM-Based Test Data Generation Approach in Model-Based Testing

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Computers, Materials & Continua 2022年第6期71卷 4337-4354页

作者： Muhammad Luqman mohd-Shafie Wan mohd nasir Wan Kadir Muhammad Khatibsyarbini mohd Adham Isa Israr Ghani Husni Ruslai Department of Software Engineering School of ComputingFaculty of EngineeringUniversiti Teknologi Malaysia81310Johor BahruJohorMalaysia GATES IT Solution Sdn Bhd WISMA GATESJalan Perdana 4Taman Sri Pulai Perdana 281300SkudaiJohorMalaysia

Testing is an integral part of software *** fastpaced system developments have rendered traditional testing techniques ***,automated testing techniques are needed to adapt to such system developments ***-based testing(MBT)is a technique that uses system models to generate and execute test cases *** was identified that the test data generation(TDG)in many existing model-based test case generation(MB-TCG)approaches were still *** automatic and effective TDG can further reduce testing cost while detecting more *** study proposes an automated TDG approach in MB-TCG using the extended finite state machine model(EFSM).The proposed approach integrates MBT with combinatorial *** information available in an EFSM model and the boundary value analysis strategy are used to automate the domain input classifications which were done manually by the existing *** results showed that the proposed approach was able to detect 6.62 percent more faults than the conventionalMB-TCG but at the same time generated 43 more *** proposed approach effectively detects faults,but a further treatment to the generated tests such as test case prioritization should be done to increase the effectiveness and efficiency of testing.

关键词： Model-based testing test case generation test data generation combinatorial testing extended finite state machine

在文莱接受透析治疗的肾功能衰竭患者的回顾性研究

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在文莱接受透析治疗的肾功能衰竭患者的回顾性研究

作者： Nurazimah binti mohd nasir 吉林大学

学位级别：硕士

背景:多年来,肾衰竭一直是文莱达鲁萨拉国成人死亡的最高原因之一。迄今为止,血液透析(HD)被认为是该国最受青睐的肾脏替代疗法(KRT)模式。尽管许多研究在血液透析(HD)和腹膜透析(PD)之间的生存优势上有相互矛盾的结果,但据报道,腹膜透... 详细信息

背景:多年来,肾衰竭一直是文莱达鲁萨拉国成人死亡的最高原因之一。迄今为止,血液透析(HD)被认为是该国最受青睐的肾脏替代疗法(KRT)模式。尽管许多研究在血液透析(HD)和腹膜透析(PD)之间的生存优势上有相互矛盾的结果,但据报道,腹膜透析(PD)比血液透析(HD)具有早期生存优势,特别是在治疗的第一年和第二年。在最近的研究中也证明了这一点,这些研究也支持根据功能血管通路类型,与HD患者相关的过度死亡率可以更好地解释。因此,本研究旨在评估和比较文莱达鲁萨兰国启动维持透析的肾衰竭患者1年的生存结居,并进一步探索不同类型的血管通路。此外,本研究还旨在确定与不良生存预后相关的重要危险因素。方法/设计:进行了一项回顾性的基于文莱透析和移植注册处(BDTR)注册的队列研究,登记了2015年1月1日至2019年12月31日接受维持透析的所有连续成人患者。根据初始透析方式对三个(3)亚组进行分析,并分层至HD血管通路类型:1)动静脉瘘(HD-AVF)血液透析,2)导管(HD-C)血液透析和3)腹膜透析(PD)。研究结果表明需要维持透析的肾衰竭患者的基线特征,以及这三个亚组之间1年生存结局的比较。采用单变量和多变量Cox回归分析来比较这些组之间的生存率,并评估与全因死亡率相关的危险因素。结果:共有582例患者符合纳入标准,分别分为472例(81.1%)、56例(9.62%)、54例(9.27%)进行导管(HD-C)血液透析、动静脉瘘(HD-AVF)血液透析和腹膜透析(PD)患者。从总队列中来看,共有60名患者在随访的12个月内死亡,总随访的中位长度为218天。总体1年累计生存率为89.7%,其中腹膜透析的一年累计生存率最高,为96.3%。总的来说,经导管进行血液透析(HD-C)的全因死亡率最高,共有54例死亡。导管使用的死亡原因是与导管相关的感染(n=33)。随后使用动静脉瘘(AVF)作为血管通路类型的全因死亡率死亡风险最高,这仍与进一步增加有关,从单变量和多变量分析中明显看出死亡率更高。总的来说,这些可能表明是对生存率产生负面影响的重要风险因素,然而,我们的研究结果表明,在年龄、性别、透析开始时存在的某些共病和获取类型方面,没有显著差异。结论:通过利用当地的数据分析结果,可以提供最新的见解和指导,说明我们目前在直接或间接解决国内肾脏疾病问题方面所处的位置。根据研究结果表明,腹膜透析(PD)在一年后比血液透析(HD)具有生存优势,即使进一步分层进入HD-C和HD-AVF也是如此,而AVF与全因死亡的高风险有关。本研究的局限性为研究本身是回顾性设计,利用人工维护的注册表数据,而数据容易出现不准确和人为错误;其次,有偏倚的存在,即选择偏倚,尤其是受患者治疗的偏好,这不仅仅是由多学科的健康专家最终决定。总的来说,这些观点支持透析的血管通路类型确实在透析患者的生存机会的调整中起着重要作用。因此,即使在统计学上无意义,研究结果也突出了血管通路类型的巨大影响。

关键词：肾脏替代治疗肾衰竭生存期腹膜透析血液透析动静脉瘘导管

Disease burden,antimicrobial resistance and molecular characterization of invasive group B Streptococcus among non-pregnant adults in Malaysia:A protocol study

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Asian Pacific Journal of Tropical Medicine 2023年第11期16卷 498-505页

作者： Abdulrahman Muthanna Nurul Hana Zainal Baharin mohd nasir mohd Desa Nurul Diana Dzaraly Mohammad Noor Amal Azmai Syafinaz Amin-Nordin Department of Biomedical Sciences Faculty of Medicine and Health SciencesUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Department of Biology Faculty of ScienceUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Aquatic Animal Health and Therapeutics Laboratory Institute of BioscienceUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Department of Medical Microbiology Faculty of Medicine and Health SciencesUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Department of Medical Microbiology Sultan Abdul Aziz Shah HospitalUniversiti Putra MalaysiaPersiaran MARDI-UPM43400SelangorMalaysia Laboratory of Vaccine and Biomolecules Institute of BioscienceUniversiti Putra Malaysia43400 SerdangSelangorMalaysia

and pili genes are also ***:This multicentre,prospective,observational study is conducted in seven major tertiary hospitals in Malaysia among non-pregnant ***,a retrospective study is conducted in the selected hospitals with similar *** isolates are subjected to phenotyping,serotyping by multiplex PCR,antimicrobial susceptibility testing and PCR-detection of GBS virulence and pilus *** housekeeping genes are amplified and sequenced for multi-locus sequence ***:Findings from the study may contribute to the management of clinical practice to diagnose and prevent GBS related diseases in a timely *** use of antibiotics is encouraged by monitoring antimicrobial resistance.

关键词： Group B Streptococcus Incidence Serotype Antimicrobial resistance Virulence gene Multi-locus sequence typing

Chicken Eggshell as an Innovative Bioflocculant in Harvesting Biofloc for Aquaculture Wastewater Treatment

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Journal of Renewable Materials 2023年第5期11卷 2321-2332页

作者： Hajjar Hartini Wan Jusoh Nor Azman Kasan Hidayah Manan Nurfarahana mohd nasir Fareza Hanis mohd Yunos Sofiah Hamzah Ahmad Jusoh Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia TerengganuKuala NerusTerengganu21030Malaysia Institute of Tropical Aquaculture and Fisheries(AKUATROP) Universiti Malaysia TerengganuKuala NerusTerengganu21030Malaysia Faculty of Engineering Universiti Putra MalaysiaUPM SerdangSelangor Darul Ehsan43400Malaysia

Implementation of biofloc technology(BFT)system in aquaculture industry shows high productivity,low feed conversion ratio,and an optimum culture *** study was divided into two *** first phase involved maintaining the water quality using the optimum carbon-to-nitrogen ratio by manipulating pH in culture *** second phase examined the performance of harvesting biofloc(remaining phytoplankton and suspended solids in the system)using chicken eggshell powder(CESP).This study showed that pH 7 to 8 were the best biofloc performance with high removal percentage of ammonia(>99%)with a remaining ammonia concentration of 0.016 mg L^(−1)and 0.018 mg L^(−1),*** second phase of this study was performed to determine the optimal formulation and conditions of using CESP as a bio-flocculant in harvesting excess *** use of eggshell showed a higher harvesting efficiency of more than 80%under the following treatment conditions:0.25 g L^(−1)of eggshell dosage;with rapid and slow mixing rates of 150 and 30 rpm,respectively;30 min of settling time;settling velocity of 0.39 mm s^(−1)and pH of 6 to ***,the results indicated that biofloc would be the best green technology approach for sustainable aquaculture wastewater and the CESP is an organic matrix that environmental-friendly bio-coagulant for biofloc harvesting.

关键词： Chicken eggshell aquaculture biofloc coagulant water quality harvesting

Antibiotic resistance and molecular typing of clinical Staphylococcus aureus isolates from Malaysian military hospital

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Asian Pacific Journal of Tropical Medicine 2023年第5期16卷 220-231页

作者： Nor Syaza Syahirah Amat Junaidi Nik Noorul Shakira Mohamed Shakrin Mohammad Fahmi Daman Huri Ahmad Zakwan Kamarudin mohd nasir mohd Desa Wan mohd Zin Wan Yunus Faculty of Medicine and Defence Health Universiti Pertahanan Nasional Malaysia(UPNM)Kem Sungai Besi57000 Sungai BesiKuala LumpurMalaysia Centre for Tropicalization(CENTROP) Universiti Pertahanan Nasional Malaysia(UPNM)Kem Sungai Besi57000 Sungai BesiKuala LumpurMalaysia Pathology Department Tuanku Mizan Armed Forces Hospital(TMAFH)53300 Kuala LumpurMalaysia Faculty of Medicine and Health Sciences Universiti Sains Islam Malaysia(USIM)Persiaran IlmuPutra Nilai71800 NilaiNegeri SembilanMalaysia Department of Biomedical Science Faculty of Medicine and Health SciencesUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Faculty of Defence Science and Technology Universiti Pertahanan Nasional Malaysia(UPNM)Kem Sungai Besi57000 Sungai BesiKuala LumpurMalaysia

Objective:To determine the antibiotic resistance profile(ARP)of Staphylococcus(S.)aureus isolates and molecular typing of the methicillin-resistant ***(MRSA)isolates from Tuanku Mizan Armed Forces Hospital(TMAFH),Kuala ***:The ARP and presence of the pvl gene were determined for 209 *** isolates from clinical *** these,123 were methicillin-susceptible ***(MSSA)isolates and 86 were MRSA *** MRSA isolates were characterized using SCCmec typing and spa *** analysis was performed to compare the demographic data with the phenotypic and genotypic variables of the *** ***:No vancomycin-intermediate and-resistant ***(VISA and VRSA,respectively)were detected among the study *** MSSA isolates showed low resistance rates to all tested antibiotics,were commonly invasive(28/42,66.7%),and mostly harboured pvl(35/42,83.3%).Meanwhile,MRSA isolates showed high resistance to penicillin(86/86,100%),ampicillin(86/86,100%),sulbactam/ampicillin(86/86,100%),cefuroxime(81/86,94.19%),cefoperazone(76/86,88.37%),azithromycin(56/86,65.12%),and erythromycin(54/86,62.79%).The majority of MRSA isolates were of SCCmec type IVh(65/86,75.58%),spa type t032(55/85,63.95%),and grouped into spaCC-t022(66/85,77.65%).The t032 type was found to be associated with resistance traits to azithromycin and erythromycin(P<0.05).We also found several spa types that are typically associated with hospital-,community-,and livestock-associated MRSA co-existing in our MRSA ***:This study reflected the consistent absence of VISA and VRSA and corroborated the clonal shifting of MRSA isolates in the Malaysian MRSA isolates.

关键词： Staphylococcus aureus Methicillin-resistant Staphylococcus aureus spa typing SCCmec typing Antibiotic resistance

Occurrence of K1 and K2 serotypes and genotypic characteristics of extended spectrumβ-lactamases-producing Klebsiella pneumoniae isolated from selected hospitals in Malaysia

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Asian Pacific Journal of Tropical Medicine 2024年第1期17卷 30-38页

作者： Nurul Syazrah Anuar Hazmin Hazman Sharven Raj Jeyakumar mohd nasir mohd Desa Hasni Idayu Saidi Siti Norbaya Masri Nur Afiza Aziz Nurshahira Sulaiman Department of Biomedical Science Faculty of Medicine and Health SciencesUniversiti Putra Malaysia43400UPM SerdangSelangorMalaysia Department of Medical Microbiology Faculty of Medicine and Health SciencesUniversiti Putra Malaysia43400UPM SerdangSelangorMalaysia Microbiology Unit Department of PathologyHospital Sultanah AminahJalan Persiaran Sultan Abu Bakar80100 Johor BahruJohorMalaysia

Objective:To determine the distribution,phenotypic and genetic background of extended spectrumβ-lactamases(ESBL)-producing Klebsiella(K.)pneumoniae clinical isolates associated with K1 and K2 serotypes in two selected hospitals in ***:A total of 192 *** isolates were collected and subjected to antibiotic susceptibility,hypermucoviscosity test and multiplex PCR to detect the presence of K1-and K2-serotype associated *** sequence typing(MLST)was performed on ESBL-producing *** isolates presented with K1 and K2 serotypes,followed by phylogenetic ***:A total of 87 out of 192(45.3%)of the *** isolates collected were ESBL ***,only 8.3%(16/192)and 10.9%(21/192)of the total isolates were detected to carry K1-and K2-serotype associated genes,*** analysis showed that K1 and K2 capsular serotypes were not significantly associated with ESBL phenotype(P=0.196).However,they were significantly associated with hypervirulent,as demonstrated by the positive string test(P<0.001).MLST analysis revealed that ST23 as the predominant sequence type(ST)in the K1 serotype,while the ST in the K2 serotype is more ***:Although the occurrence of ESBL-producing isolates among the hypervirulent strains was low,their coexistence warrants the need for continuous *** showed that these isolates were genetically heterogeneous.

关键词： Extended spectrumβ-lactamases Klebsiella pneumoniae Capsular serotypes Genotypic

Variable range hopping transport and dielectric relaxation mechanism in GdCrO_(3) rare-earth orthochromite perovskite

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Journal of Rare Earths 2024年第7期42卷 1304-1316,I0004页

作者： Muhammad Javed Ayaz Arif Khan Jamal Kazmi Naeem Akbar Said nasir Khisro Amanullah Dar Aleem Dad Khan Tareen mohd Ambri Mohamed Department of Physics The University of Azad Jammu and KashmirMuzaffarabad13100Pakistan Department of Physics University of Kotli Azad Jammu and KashmirKotli11100Pakistan Institute of Microengineering and Nanoelectronics Universiti Kebangsaan Malaysia43600BangiSelangorMalaysia Department of Mathematics University of Kotli Azad Jammu and KashmirKotli11100Pakistan

The polycrystalline GdCrO_(3)(GCO)perovskite orthochromite was synthesized by the sol-gel auto-combustion *** Rietveld refined X-ray diffraction(XRD)profile of GCO confirms that the orthorhombic phase crystallizes in perovskite crystal structure with space group *** transmission electron microscopy and selected area electron diffraction divulge the polycrystalline nature of the perovskite *** field emission scanning electron microscopy(FESEM)images reveal the microstructural polyhedral growth of grains separated by sharp grain *** chemical states of the ions present in the compound were investigated by X-ray photoelectron spectroscopy(XPS)studies,and the electrical pathways were *** impedance studies were carried out in the experimental frequency and temperature ranges of 40 Hz-4 MHz and 178-408 K,*** equivalent circuit model(RGQG)(RGBQGB)resolves the impedance response into two contributions originating from the intra-grain and inter-granular micro-constituents of the *** electrical conduction mechanism is based on the Mott variable range hopping *** complex electric modulus studies demonstrate the short-and long-range mobility of the charge carriers and rule out the presence of electrode effects on the dielectric relaxation mechanism of the *** decreasing pattern of dielectric permittivity with frequency is explained by the Maxwell-Wagner type of *** frequency dependence of the loss factor exhibits the presence of thermally activated relaxation time distribution in the material.

关键词： Auto-combustion Perovskite Electro-ceramic Dielectric Electrical transport Impedance

Root-Of-Trust for Continuous Integration and Continuous Deployment Pipeline in Cloud Computing

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Computers, Materials & Continua 2022年第11期73卷 2223-2239页

作者： Abdul Saboor mohd Fadzil Hassan Rehan Akbar Erwin Susanto Syed nasir Mehmood Shah Muhammad Aadil Siddiqui Saeed Ahmed Magsi High-Performance Cloud Computing Centre(HPC3) Department of Computer&Information SciencesUniversiti Teknologi PETRONASSeri IskandarPerakMalaysia Centre for Research in Data Science(CeRDaS) Department of Computer&Information SciencesUniversiti Teknologi PETRONASSeri IskandarPerakMalaysia School of Electrical Engineering Telkom UniversityBandungIndonesia KICSIT Institute of Space Technology(IST)IslamabadPakistan Department of Electrical and Electronics Engineering Universiti Teknologi PETRONASSeri IskandarPerakMalaysia

Cloud computing has gained significant use over the last decade due to its several benefits,including cost savings associated with setup,deployments,delivery,physical resource sharing across virtual machines,and availability of on-demand cloud ***,in addition to usual threats in almost every computing environment,cloud computing has also introduced a set of new threats as consumers share physical resources due to the physical co-location ***,since there are a growing number of attacks directed at cloud environments(including dictionary attacks,replay code attacks,denial of service attacks,rootkit attacks,code injection attacks,etc.),customers require additional assurances before adopting cloud ***,the continuous integration and continuous deployment of the code fragments have made cloud services more prone to security *** this study,the model based on the root of trust for continuous integration and continuous deployment is proposed,instead of only relying on a single signon authentication method that typically uses only id and *** underlying study opted hardware security module by utilizing the Trusted Platform Module(TPM),which is commonly available as a cryptoprocessor on the motherboards of the personal computers and data center *** preliminary proof of concept demonstrated that the TPM features can be utilized through RESTful services to establish the root of trust for continuous integration and continuous deployment pipeline and can additionally be integrated as a secure microservice feature in the cloud computing environment.

关键词： Root of Trust(RoT) Trusted Platform Module(TPM) cryptoprocessor microservices Hardware Security Modules(HSM) DevOps

通过具有速度滑移和辐射效应的可渗透拉伸/收缩Riga板的驻点流动和热传导（英文）

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2019年第4期20卷 290-299页

作者： Nor Ain Azeany mohd nasir Anuar ISHAK Ioan POP Department of Mathematics Centre for Defence Foundation Studies Universiti Pertahanan Nasional Malaysia School of Mathematical Sciences Faculty of Science and Technology Universiti Kebangsaan Malaysia Department of Mathematics Babe?-Bolyai University

目的:1.通过分析Riga板的抽吸效应来控制流体运动和减少摩擦力和压力阻力;2.利用磁场的速度滑移效应来控制流体的流速;3.基于辐射原理控制热传导并减小阻力。创新点:1.本研究可应用于核电厂、飞机、潜艇以及卫星等设施中推进装置的设计... 详细信息

目的:1.通过分析Riga板的抽吸效应来控制流体运动和减少摩擦力和压力阻力;2.利用磁场的速度滑移效应来控制流体的流速;3.基于辐射原理控制热传导并减小阻力。创新点:1.本研究可应用于核电厂、飞机、潜艇以及卫星等设施中推进装置的设计;2.本研究可用于防止边界层分离以减少湍流的产生。方法:1.构建基于偏微分方程的数理模型;2.利用相似变换法将偏微分方程简化为常微分方程;3.利用Matlab内置求解器bvp4c对常微分方程组进行数值求解;4.基于求解结果讨论稳定性。结论:1.对于拉伸/收缩两种情形的Riga板问题都存在对偶解;2.数值求解结果显示表面摩擦系数和表面传热率均会随着吸力的增大而增大,而随拉伸/收缩参数?的增大而减小;3.上支解的努塞尔数增大而下支解减小;4.辐射会提高边界层内的温度,而增强滑移效应则会提高流速同时降低边界层温度;5.只有上支解是长期稳定的。

关键词： Riga板驻点流动热传导收缩薄片对偶解