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Sentiment Analysis and Classification Using Deep Semantic Information and Contextual Knowledge

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Computers, Materials & Continua 2023年第1期74卷 671-691页

作者： Ahmed abdulhakim Al-Absi Dae-Ki Kang Mohammed abdulhakim Al-Absi Department of Smart Computing Kyungdong University 464-gilBongpoGosungGangwon-do24764Korea Division of Computer Engineering Dongseo University47 Jurye-roSasang-guBusan47011Korea Department of Computer Engineering Dongseo University47 Jurye-roSasang-guBusan47011Korea

Sentiment analysis(AS)is one of the basic research directions in natural language processing(NLP),it is widely adopted for news,product review,and ***-based sentiment analysis(ABSA)aims at identifying the sentiment polarity of a given target context,previous existing model of sentiment analysis possesses the issue of the insufficient exaction of features which results in low *** this research work develops a deep-semantic and contextual knowledge networks(DSCNet).DSCNet tends to exploit the semantic and contextual knowledge to understand the context and enhance the accuracy based on given *** first temporal relationships are established then deep semantic knowledge and contextual knowledge are ***,a deep integration layer is introduced to measure the importance of features for efficient extraction of different *** of DSCNet model lies in introducing the deep *** is evaluated on three datasets i.e.,Restaurant,Laptop,and Twitter dataset considering different deep learning(DL)metrics like precision,recall,accuracy,and Macro-F1 ***,comparative analysis is carried out with different baselinemethods in terms of accuracy andMacro-F1 *** achieves 92.59%of accuracy on restaurant dataset,86.99%of accuracy on laptop dataset and 78.76%of accuracy on Twitter dataset.

关键词： Sentiment analysis aspect-sa deep learning DSCNet

Forty Years of Air Temperature Change over Iran Reveals Linear and Nonlinear Warming

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Journal of Meteorological Research 2022年第3期36卷 462-477页

作者： Majid KAZEMZADEH Zahra NOORI Sadegh JAMALI abdulhakim M.ABDI Faculty of Natural Resources University of Tehran77871-31587KarajIran Department of Technology and Society Lund UniversitySE-22100LundSweden Centre for Environmental and Climate Science Lund UniversitySE-22362LundSweden

Spatiotemporal analysis of long-term changes in air temperature is of prime importance for climate change research and the development of effective mitigation and adaptation *** there are considerable studies on air temperature change across the globe,most of them have been on linear trends and time series analysis of nonlinear trends have not received enough ***,spatiotemporal patterns of monthly and annual mean(Tmean),maximum(T_(max)),and minimum(T_(min))air temperature at 47 synoptic stations across climate zones in Iran for a 40-yr period(1978–2017)are analyzed.A polynomial fitting scheme(Polytrend)is used to both monthly and annual air temperature data to detect trends and classify them into linear and nonlinear(quadratic and cubic)*** significant(non-significant)trends in Tmean,T_(max),and T_(min) across all climate zones are 41.1%(58.9%),34.1%(65.9%),and 46%(54%),*** highest magnitude of increasing trends is observed in the annual T_(min)(0.47℃decade−1)and the lowest magnitude is for the annual T_(max)(0.4℃decade−1).Across the country,increasing trends(=37.2%)have higher spatial coverage than the decreasing trends(=3.2%).Warming trends in Tmean(65.3%)and T_(min)(73.1%)are mainly observed in humid climate zone while warming trends in T_(max) are in semi-arid(43.9%)and arid(34.1%)*** change with a positive trend is predominant in all Tmean(56.7%),T_(max)(67.8%),and T_(min)(71.2%)and for both monthly and annual ***,the linear trends have the highest warming rate in annual T_(min)(0.83℃decade^(−1))and Tmean(0.46℃decade^(−1))whereas the nonlinear trends have the highest warming rate in annual T_(max)(0.52℃decade^(−1)).The linear trend type is predominant across the country especially in humid climate zones whereas the nonlinear trends(quadratic and cubic)are mainly observed in the arid climate *** study highlights nonlinear changes and spatiotemporal trends in air temperature in Iran an

关键词： linear trends nonlinear trends time series analysis air temperature Polytrend Iran

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华为手机在也门市场的营销策略研究

华为手机在也门市场的营销策略研究

作者： SAIMON abdulhakim HEZAM MOHAMMED（思梦）天津大学

学位级别：硕士

华为公司已经在中国取得了卓越的营销成就,目前正在针对自己的智能手机产品,努力开拓世界范围内的市场。也门是华为公司的新目标,目前华为公司在也门的销售份额落后于苹果和三星等国外品牌,这需要华为公司进一步研究营销方案,为市场开... 详细信息

华为公司已经在中国取得了卓越的营销成就,目前正在针对自己的智能手机产品,努力开拓世界范围内的市场。也门是华为公司的新目标,目前华为公司在也门的销售份额落后于苹果和三星等国外品牌,这需要华为公司进一步研究营销方案,为市场开拓做出更大的贡献。本文的研究基于层次分析法进行了实证分析,利用SWOT模型对华为公司在也门面临的营销挑战,做出了综合性的探讨,在定量与定性两个方面都达到了令人满意的研究目的。对也门的手机营销市场做了详细的调研,然后对华为公司目前主要的智能手机产品做了充分的介绍,并基于此对华为公司在也门市场的各方面情况做出了全面的分析,再应用STP等经典的营销理论对华为公司未来在也门的市场发展战略做了详细的调研与评判,针对华为公司目前在也门在各种营销工作中的不足之处做出了探讨,具体包括低端手机品牌性价比相对不高、手机应用内容同质化、定价模式过于单一、固守品牌溢价策略、线上渠道建设几乎空白、缺乏中间经销商、饥饿营销可能产生副作用、促销手段欠缺本土化力度等等,等等,最后针对各个手机品牌在也门市场的营销案例,提出了华为公司可以借鉴的观点,例如增加低端型号手机性价比、增强科技创新以丰富产品内容、展开多样化定价模式、实事求是制定品牌战略、初步布局线上渠道的准备工作、增加中间经销商、选择合适的促销手段、注重针对当地的市场调研,等等。本文希望能够通过丰富而具体的案例研究,对华为在也门市场未来的发展,提出有建设性的意见,以使得中国手机品牌能够对此进行有效的借鉴,更好的进军也门乃至整个阿拉伯国家手机市场。

关键词：华为手机营销战略 SWOT-AHP 也门

Window Air Conditioners Transition and Restriction in Saudi Arabia

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Journal of Power and Energy Engineering 2022年第5期10卷 1-21页

作者： Essam Al Ammar abdulhakim Bin Dayil Electrical Engineering Department King Saud University Riyadh Saudi Arabia

This paper will provide a proposed solution for saving energy consumption due to residential air conditioners by reducing the window air conditioners type which is the most consumed energy and has a big percent of spreading inside KSA than the split type, also it will discuss some restrictions for trading and manufacturing of air conditioner devices inside KSA besides some restrictions on market and buildings to achieve the objective of reducing the consumption of energy which become a big trend in kingdom vision 2030. The results of this suggesting solution will help the decision-makers to start its plan for execution as it has a big difference between using window type from 2022 till 2030 and if we stop its sales and replace by an efficient one of split AC type in energy consumption in addition to CO2 emission reduction and decreasing of energy cost, hence our kingdom can save petroleum raw materials and keeping the environment to become clean from pollutants so that these resources are delivered to successive generations correct and clean as we received them from those before us.

关键词： Air Conditioners (AC) Terawatt-Hour (TWh) Saudi Standards Metrology and Quality Organization (SASO) Energy-Efficiency Ratio (EER) High Efficiency Air Conditioning (HEAC) Carbon Dioxide (CO2) Heating Ventilation and Air Conditioning (HVAC) Saudi Building Code (SBC) Saudi Energy Efficiency Center (SEEC)

Planning failure-censored constant-stress partially accelerated life test

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Journal of Systems Engineering and Electronics 2015年第3期26卷 644-650页

作者： Ali A.Ismail abdulhakim A.Al-Babtain Department of Statistics and Operations Research College of Science King Saud University Department of Statistics Faculty of Economics & Political Science Cairo University

This article deals with the case of the failure-censored constant-stress partially accelerated life test （CSPALT） for highly reliable materials or products assuming the Pareto distribution of the second kind. The maximum likelihood （ML） method is used to estimate the parameters of the CSPALT model. The performance of ML estimators is investigated via their mean square error. Also, the average confidence interval length （IL） and the associated co- verage probability （CP） are obtained. Moreover, optimum CSPALT plans that determine the optimal proportion of the test units al- located to each stress are developed. Such optimum test plans minimize the generalized asymptotic variance （GAV） of the ML estimators of the model parameters. For illustration, Monte Carlo simulation studies are given and a real life example is provided.

关键词： reliability confidence intervals coverage probabilities,optimum test plans Type-Ⅱ censoring Monte Carlo simulation.

Satellite Remote Sensing of Savannas:Current Status and Emerging Opportunities

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Journal of Remote Sensing 2022年第1期2022卷 162-181页

作者： abdulhakim M.Abdi Martin Brandt Christin Abel Rasmus Fensholt Department of Geosciences and Natural Resource Management University of CopenhagenCopenhagenDenmark Centre for Environmental and Climate Science Lund UniversityLundSweden

Savannas cover a wide climatic gradient across large portions of the Earth’s land surface and are an important component of the terrestrial *** have been undergoing changes that alter the composition and structure of their vegetation such as the encroachment of woody vegetation and increasing land-use *** the spatial and temporal dynamics of savanna ecosystem structure(e.g.,partitioning woody and herbaceous vegetation)and function(e.g.,aboveground biomass)is of high *** challenges include misclassification of savannas as forests at the mesic end of their range,disentangling the contribution of woody and herbaceous vegetation to aboveground biomass,and quantifying and mapping fuel ***,we review current(2010–present)research in the application of satellite remote sensing in savannas at regional and global *** identify emerging opportunities in satellite remote sensing that can help overcome existing *** provide recommendations on how these opportunities can be leveraged,specifically(1)the development of a conceptual framework that leads to a consistent definition of savannas in remote sensing;(2)improving mapping of savannas to include ecologically relevant information such as soil properties and fire activity;(3)exploiting high-resolution imagery provided by nanosatellites to better understand the role of landscape structure in ecosystem functioning;and(4)using novel approaches from artificial intelligence and machine learning in combination with multisource satellite observations,e.g.,multi-/hyperspectral,synthetic aperture radar(SAR),and light detection and ranging(lidar),and data on plant traits to infer potentially new relationships between biotic and abiotic components of savannas that can be either proven or disproven with targeted field experiments.

关键词： structure Remote lidar

Antihyperglycaemic activity of ethylacetate extract of Chlorophytum alismifolium in type 2 diabetes:The involvement of peroxisome proliferator-activated receptor-γand dipeptidyl peptidase-4

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Journal of Integrative Medicine 2021年第1期19卷 78-84页

作者： abdulhakim Abubakar Abdullahi Balarabe Nazifi Idris Mohammed Maje Yusuf Tanko Joseph Akpojo Anuka Ezzeldin Mukthar Abdurahman Department of Pharmacology and Therapeutics Ahmadu Bello UniversityZaria PMB-1044Nigeria Department of Pharmacology and TherapeuticsBayero UniversityKano PMB-3011Nigeria Department of Human PhysiologyAhmadu Bello UniversityZaria PMB-1044Nigeria Department of Pharmacognosy and Drug DevelopmentAhmadu Bello UniversityZaria PMB-1044Nigeria

Objective:This research is to investigate the antihyperglycaemic activity and the underlying mechanisms of action of the ethylacetate extract of Chlorophytum alismifolium(EACA)tubers in a type 2 diabetes ***:The tubers were processed and sequentially extracted in hexane followed by ethylacetate,using a Soxhlet apparatus,and subjected to gas chromatography-mass spectrometry(GC–MS).The acute toxicity of EACA was investigated in albino Wistar *** antihyperglycaemic study was carried out using high-fat diet(pelletized diet and margarine in the ratio of 10:1 and 20%fructose solution)and streptozotocin-induced hyperglycaemic Wistar *** effects of the extract(150,300 and 600 mg/kg)on blood glucose level,insulin,peroxisome proliferator-activated receptor-c(PPAR-c)and dipeptidyl peptidase-4(DPP-4)were evaluated using enzyme-linked immunosorbent ***:The oral median lethal dose in Wistar rats was estimated to be>5000 mg/*** with EACA at all doses significantly reduced the fasting blood glucose levels,compared to the hyperglycaemic control,and over *** of EACA increased the serum insulin and PPAR-c levels while decreasing DPP-4 ***–MS analysis revealed the presence of 13 compounds,with isothiazole and isoxazolidine covering total area of 24.6%and 22.69%,***:The findings from this study showed that EACA has important compounds with beneficial effect in type 2 diabetes and acts by increasing insulin secretion and PPAR-c level and decreasing DPP-4 activity.

关键词： Chlorophytum alismifolium Diabetes mellitus Gas chromatography-mass spectrometry Insulin Peroxisome proliferator-activated receptor-c Dipeptidyl-peptidase 4

Safety assessment of Chlorophytum alismifolium tuber extract (Liliaceae):Acute and sub-acute toxicity studies in Wistar rats

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Journal of Acute Disease 2019年第1期8卷 21-27页

作者： abdulhakim Abubakar Abdullahi Balarabe Nazifi Fatima Ismail hassan Kehinde Andem Duke Theophillus Danjuma Edoh Department of Pharmacology and Therapeutics Ahmadu Bello UniversityZariaNigeria Department of Pharmacology and Therapeutics Bayero UniversityKanoNigeria Toxicology and Diseases Group Pharmaceutical Sciences Research CenterTehran University of Medical SciencesTehranIran

To explore the toxicological profile of methanol extract of Chlorophytum alismifolium (MECA) tubers in Wistar rats. Methods: MECA was subjected to acute and sub-acute studies which were conducted according to Organization for Economic Co-operation and Development (OECD 425 and 407 guidelines respectively). In the acute toxicity experiment, a limit test (5000 mg/kg) was administered to five rats and monitored for 2 weeks. The sub-acute studies were conducted on 4 groups of rats. The first group served as control, while the 2nd, 3rd and 4th groups received MECA (150, 300 and 600 mg/kg respectively). The treatments were given orally and daily for 4 weeks. At the end of the experiment (29th day), the animals were euthanized to obtain blood samples and organs for haematological, biochemical and histological evaluations. Results: Acute toxicity study showed that the oral median lethal dose was >5000 mg/kg. In the sub-acute studies, the results showed no significant (P>0.05) changes in the haematological, hepatic and renal indices compared to control animals. In the fourth week, a significant (P<0.01) increase in body weight of the rats was observed at 150 mg/kg and 600 mg/kg compared to week one. However, there were no major changes in the organ/body weights of the rats. Histological examination of the kidney showed slight glomerular adhesion and tubular distortion. Moderate hepatic necrosis was observed at 150 mg/kg and 300 mg/kg. Conclusions: The results of this research revealed that the MECA tubers is virtually non-toxic after acute administration and it has low sub-acute toxicity potential in rats.

关键词： Chlorophytum alismifolium Toxicity studies Biochemical parameters Histology

Synthesis and optimization of high surface area mesoporous date palm fiber-based nanostructured powder activated carbon for aluminum removal

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Chinese Journal of Chemical Engineering 2021年第4期34卷 472-484页

作者： Alfarooq O.Basheer Marlia M.Hanafiah Mohammed abdulhakim Alsaadi Y.Al-Douri Abbas A.Al-Raad Department of Earth Sciences and Environment Faculty of Science and TechnologyUniversiti Kebangsaan Malaysia43600 BangiSelangorMalaysia Centre for Tropical Climate Change System Institute of Climate ChangeUniversiti Kebangsaan MalaysiaBangi 43600SelangorMalaysia Nanotechnology and Catalysis Research Center(NANOCAT) University of Malaya50603 Kuala LumpurMalaysia National Chair of Materials Science and Metallurgy University ofNizwa611 NizawaOman University Research Center Cihan University SulaimaniyaSulaymaniyah 46002Iraq Department of Mechatronics Engineering Faculty of Engineering and Natural SciencesBahcesehir University34349 BesiktasIstanbulTurkey

Date palm fiber(DPF)derived from agrowaste was utilized as a new precursor for the optimized synthesis of a costeffective,nanostructured,powderactivated carbon(nPAC)for aluminum(Al3+)removal from aqueous solutions using carbonization,KOH activation,response surface methodology(RSM)and central composite design(CCD).The optimum synthesis condition,activation temperature,time and impregnation ratio were found to be 650℃,1.09 hour and 1:1,***,the optimum conditions for removal were 99.5%and 9.958 mgg 1 in regard to uptake *** optimum conditions of nPAC was analyzed and characterized using XRD,FTIR,FESEM,BET,TGA and Zeta ***,the adsorption of the Al3+conditions was optimized with an integrated RSMCCD experimental *** results revealed that the adsorption kinetics data was well fitted by the pseudosecond order model,whereas the adsorption isotherm data was best represented by the Freundlich isotherm *** activated carbon indicated that DPF can serve as a costeffective precursor adsorbent for Al^(3+)removal.

关键词： Agricultural waste Nanocomposites Wastewater treatment Industrial applications