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Review of Recent Trends in the Hybridisation of Preprocessing-Based and Parameter Optimisation-Based Hybrid Models to Forecast Univariate Streamflow

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工程与科学中的计算机建模(英文) 2024年第1期138卷 1-41页

作者： Baydaa abdul kareem Salah L.Zubaidi Nadhir Al-Ansari Yousif Raad Muhsen Department of Civil Engineering University of MaysanMaysan57000Iraq Department of Civil Engineering Wasit UniversityWasit52001Iraq College of Engineering University ofWarith Al-AnbiyaaKarbala56001Iraq Department of Civil Environmental and Natural Resources Engineering Lulea University of TechnologyLulea97187Sweden Department of Computer Science Faculty of Computer Science and Information TechnologyUniversiti Putra MalaysiaSerdang43400Malaysia

Forecasting river flow is crucial for optimal planning,management,and sustainability using freshwater *** machine learning(ML)approaches have been enhanced to improve streamflow *** techniques have been viewed as a viable method for enhancing the accuracy of univariate streamflow estimation when compared to standalone *** researchers have also emphasised using hybrid models to improve forecast ***,this paper conducts an updated literature review of applications of hybrid models in estimating streamflow over the last five years,summarising data preprocessing,univariate machine learning modelling strategy,advantages and disadvantages of standalone ML techniques,hybrid models,and performance *** study focuses on two types of hybrid models:parameter optimisation-based hybrid models(OBH)and hybridisation of parameter optimisation-based and preprocessing-based hybridmodels(HOPH).Overall,this research supports the idea thatmeta-heuristic approaches precisely improveML ***’s also one of the first efforts to comprehensively examine the efficiency of various meta-heuristic approaches(classified into four primary classes)hybridised with ML *** study revealed that previous research applied swarm,evolutionary,physics,and hybrid metaheuristics with 77%,61%,12%,and 12%,***,there is still room for improving OBH and HOPH models by examining different data pre-processing techniques and metaheuristic algorithms.

关键词： Univariate streamflow machine learning hybrid model data pre-processing performance metrics

An automatic subdigraph renovation plan for failure recovery of composite semantic Web services

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Frontiers of Computer Science 2013年第6期7卷 894-913页

作者： Hadi SABOOHI Sameem abdul kareem Department of Artificial Intelligence Faculty of Computer Science and Information Technology University of Malaya Kuala Lumpur 50603 Malaysia

A Web service-based system never fulfills a user＇s goal unless a failure recovery approach exists. It is inevitable that several Web services may either perish or fail before or during transactions. The completion of a composite process relies on the smooth execution of all constituent Web services. A mediator acts as an intermediary between providers and consumers to monitor the execution of these services. If a service fails, the mediator has to recover the whole composite process or else jeopardize achieving the intended goals. The atomic replacement of a perished Web service usually does not apply because the process of locating a matched Web service is unreliable. Even the system cannot depend on the replacement of the dead service with a com- posite service. In this paper, we propose an automatic renova- tion plan for failure recovery of composite semantic services based on an approach of subdigraph replacement. A replacement subdigraph is posed in lieu of an original subdigraph, which includes the failed service. The replacement is done in two separate phases, ofltine and online, to make the recovery faster. The ofitine phase foresees all possible subdigraphs, pre-calculates them, and ranks several possible replacements. The online phase compensates the unwanted effects and executes the replacement subdigraph in lieu of the original subdigraph. We have evaluated our approach during an experiment and have found that we could recover more than half of the simulated failures. These achievements show a significant improvement compared to current approaches

关键词： semantic Web service composite services fail- ure recovery subdigraph replacement

X-Ray Diffraction Study of Plasma Exposed and Annealed AlSb Bilayer Thin Film

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Plasma Science and Technology 2013年第4期15卷 382-385页

作者： T. abdul kareem A. Anu KALIANI PG and Research Department of Physics Kongunadu Arts and Science College CoimbatoreTamilnadu 641029 India

Aluminum antimony seems to be a promising semiconducting material for high temperature applications, especially for transistors and P-N junction diodes. Additionally, it is a highly efficient solar material. This paper discusses the plasma induced bilayer diffusion of A1Sb bilayer thin films using X-ray diffractogram. A1Sb bilayer thin films were prepared on a glass substrate by vacuum evaporation technique. The effect of plasma exposure time and annealing temperature on the micro-structural parameters were investigated. X-ray diffraction studies show that the cubic crystals of A1 orient along the （111） plane and the hexagonal crystals of Sb orient along the （003） plane. Newly formed cubic crystals of A1Sb are oriented along the （200） plane and they are formed due to the simultaneous growth of A1 and Sb crystals during plasma exposure.

关键词： Aluminum antimony bilayer plasma exposure bilayer mixing

The Effect of Magnesium on Calcificaton of Coccolithophore Pleurochrysis Carterae

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The Effect of Magnesium on Calcificaton of Coccolithophore P...

作者： kareem abdul 西南科技大学

学位级别：硕士

球藻是重要的单细胞超微浮游生物,广泛分布于海洋,是现代海洋中最高级的初级生产力之一。因此,它对海洋生态系统有着重要的影响,球石藻可以在生命过程中分泌生物碳酸钙,颗粒状化石蕴藏着丰富的地质信息,在古海洋中具有十分重要的意义。... 详细信息

球藻是重要的单细胞超微浮游生物,广泛分布于海洋,是现代海洋中最高级的初级生产力之一。因此,它对海洋生态系统有着重要的影响,球石藻可以在生命过程中分泌生物碳酸钙,颗粒状化石蕴藏着丰富的地质信息,在古海洋中具有十分重要的意义。本文研究了镁离子对颗石藻钙化的影响。颗粒状球虫是现代海洋中分布最广的一种,其特征为方解石鳞片,称为颗粒状。在海洋浮游植物类群中,颗石藻是必不可少的组成部分,它在全球范围内提供了类似的有机碳,(碳酸钙)碳酸盐(计数器)和有机碳泵(生物碳泵)。颗粒状无机碳或方解石在无花条件下可产生30～60%的碳酸钙,初级产物可贡献10～20%的总叶绿素。细胞产生可沉没的碳酸钙(CaC03)壳到深海制造白垩矿床,对碳和气候反馈的普遍生物地球化学循环具有重要意义,球石藻破坏了许多海洋链的基础,并在世界范围内广泛延伸。结果表明,PIC的产生在镁浓度的增加和POC浓度的降低方面影响较大。红外光谱分析结果表明,镁通过改变方解石的晶相转变为文石或无定形碳酸钙,改变了石英的钙化过程,培养基中的高镁浓度。在这项研究中,我们对钙化性球菌球蛋白进行了批量培养,我们观察了TH的反应。

关键词：钙化颗石藻镁生物矿化海洋浮游植物

Collaborative impact of bacterial exometabolites governing root microbiota formation

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Stress Biology 2023年第1期3卷 424-427页

作者： Hafiz abdul kareem Xinwei Hao Xihui Shen State Key Laboratory of Crop Stress Biology for Arid Areas Shaanxi Key Laboratory of Agricultural and Environmental MicrobiologyCollege of Life SciencesNorthwest A&F UniversityYanglingShaanxiChina

The majority of the root microbiota formation derives from soil-dwelling *** limited extent of thorough investigation leads to a dearth of knowledge concerning the intricate mechanisms of microbe-microbe interaction implicated in the establishment of root ***,the taxonomic signatures in bacterial inhibition profiles were determined by in vitro testing of 39,204 binary interbacterial ***,findings from genetic and metabolomic studies elucidated that co-functioning of the antimicrobial 2,4-d iacetylphloroglucinol(DAPG)and the iron chelator pyoverdine as exometabolites has significantly contributed to the potent inhibitory activities of the highly antagonistic Pseudomonas brassicacearum *** restoration with a core of Arabidopsis thaliana root commensals showed that these exometabolites possess a root niche-specific function in establishing root competence and inducing anticipated changes in root *** biosynthetic operons are abundant in roots in natural habitats,indicating that these exometabolites co-functioning is an adaptive feature that helps Pseudomonad dominate the root microbiota.

关键词： Pseudomonas Exometabolites Root microbiota Operons Pyoverdine

Blade Wrap Angle Impact on Centrifugal Pump Performance:Entropy Generation and Fluid-Structure Interaction Analysis

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Computer Modeling in Engineering & Sciences 2024年第7期140卷 109-137页

作者： Hayder kareem Sakran Mohd Sharizal abdul Aziz Chu Yee Khor School of Mechanical Engineering Universiti Sains MalaysiaEngineering CampusNibong TebalPenang14300Malaysia Chemical Engineering Department Faculty of EngineeringAl-Muthanna UniversityMuthanna66001Iraq Faculty of Mechanical Engineering&Technology Universiti Malaysia Perlis(UniMAP)ArauPerlis02600Malaysia

The centrifugal pump is a prevalent power equipment widely used in different engineering patterns,and the impeller blade wrap angle significantly impacts its performance.A numerical investigation was conducted to analyze the influence of the blade wrap angle on flow characteristics and energy distribution of a centrifugal pump evaluated as a low specific speed with a value of *** study investigates six impellermodels that possess varying blade wrap angles(95°,105°,115°,125°,135°,and 145°)that were created while maintaining the same volute and other geometrical *** investigation of energy loss was conducted to evaluate the values of total and entropy generation rates(TEG,EGR).The fluid-structure interaction was considered numerically using the software tools ANSYS Fluent and *** elastic structural dynamic equation was used to estimate the structural response,while the shear stress transport k–ωturbulence model was utilized for the fluid domain *** findings suggest that the blade wrap angle has a significant influence on the efficiency of the *** impeller featuring a blade wrap angle of 145°exhibits higher efficiency,with a notable increase of 3.76%relative to the original *** in the blade wrap angle impact the energy loss,shaft power,and pump *** model with a 145°angle exhibited a maximum equivalent stress of 14.8MPa and a total deformation of 0.084 *** results provide valuable insights into the intricate flow mechanism of the centrifugal pump,particularly when considering various blade wrap angles.

关键词： Centrifugal pump blade wrap angle entropy generation theory fluid-structure interaction hydraulic performance

A Database Querying Language for Formulating Relational Queries on Small Devices

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Computer Technology and Application 2011年第3期2卷 172-181页

作者： Ahmad Rohiza abdul-kareem Sameem Department of Computer and Information Sciences Universiti Teknologi PETRONAS 31750 Tronoh Malaysia Faculty of Computer Science and Information Technology University of Malaya 50603 Kuala Lumpur Malaysia

For small devices like the PDAs and mobile phones, formulation of relational database queries is not as simple as using conventional devices such as the personal computers and laptops. Due to the restricted size and resources of these smaller devices, current works mostly limit the queries that can be posed by users by having them predetermined by the developers. This limits the capability of these devices in supporting robust queries. Hence, this paper proposes a universal relation based database querying language which is targeted for small devices. The language allows formulation of relational database queries that uses minimal query terms. The formulation of the language and its structure will be described and usability test results will be presented to support the effectiveness of the language.

关键词： Database query language relational queries small devices.

Isolation, Characterization and Antimicrobial Resistance Patterns of Lactose-Fermenter Enterobacteriaceae Isolates from Clinical and Environmental Samples

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Open Journal of Medical Microbiology 2015年第4期5卷 169-176页

作者： Israa abdul Jabbar Ibrahim Tuqa abdul kareem Hameed Department of Biology College of Education for Pure Science Ibn Al-Haitham University of Baghdad Baghdad Iraq

The lactose-fermenter Enterobacteriaceae are the most frequent cause of clinical infection in our country. The objective of this study was to isolate and identify the most common lactose-fermenter Enterobacteriaceae from clinical samples, including urine, blood, wounds, and sputum, obtained from the local hospital and from environmental samples from a chicken farm, agriculture soil, and water from the Tigris River in Baghdad City. The study also aimed at establishing the antibiotic resistance patterns of the isolated bacteria. A total of 155 bacterial isolates were identified from 10 genera according to the Vitek 2 system. The most common bacterial isolates from the clinical and environmental samples were Escherichia coli and Klebsiella pneumoniae, respectively. The antibiotic resistance patterns showed that all clinical and environmental isolates were multidrug resistant to β-lactam (except carbapenems) drug and aminoglycosides and more sensitive to carbapenems.

关键词： Enterobacteriaceae Lactose Fermenters Clinical Environmental Samples

Erratum to “Isolation, Characterization and Antimicrobial Resistance Patterns of Lactose-Fermenter Enterobacteriaceae Isolates from Clinical and Environmental Samples” [Open Journal of Medical Microbiology 5 (2015) 169-176]

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Open Journal of Medical Microbiology 2016年第1期6卷 1-2页

作者： Israa abdul Jabbar Ibrahim Tuqa abdul kareem Hameed Department of Biology College of Education for Pure Science Ibn Al-Haitham University of Baghdad Baghdad Iraq

关键词： Enterobacteriaceae Lactose Fermenters Clinical Environmental Samples