检索结果-南通市图书馆

Toward a More Accurate Web Service Selection Using Modified Interval DEA Models with Undesirable Outputs

在线全文

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2020年第5期123卷 525-570页

作者： Alireza Poordavoodi mohammad Reza Moazami Goudarzi Hamid Haj Seyyed Javadi amir Masoud Rahmani mohammad Izadikhah Department of Computer Engineering Borujerd BranchIslamic Azad UniversityBorujerdIran Department of Mathematics Borujerd BranchIslamic Azad UniversityBorujerdIran Department of Mathematics and Computer Science Shahed UniversityTehranIran Department of Computer Science Khazar UniversityBakuAzerbaijan Department of Mathematics Arak BranchIslamic Azad UniversityArakIran

With the growing number of Web services on the internet,there is a challenge to select the best Web service which can offer more quality-of-service(QoS)values at the lowest *** challenge is the uncertainty of QoS values over time due to the unpredictable nature of the *** this paper,we modify the interval data envelopment analysis(DEA)models[Wang,Greatbanks and Yang(2005)]for QoS-aware Web service selection considering the uncertainty of QoS attributes in the presence of desirable and undesirable *** conduct a set of experiments using a synthesized dataset to show the capabilities of the proposed *** experimental results show that the correlation between the proposed models and the interval DEA models is ***,the proposed models provide almost robust results and represent more stable behavior than the interval DEA models against QoS ***,we demonstrate the usefulness of the proposed models for QoS-aware Web service *** results indicate that the proposed models significantly improve the fitness of the resultant compositions when they filter out unsatisfactory candidate services for each abstract service in the preprocessing *** models help users to select the best possible cloud service considering the dynamic internet environment and they help service providers to improve their Web services in the market.

关键词： Cloud computing interval data envelopment analysis interval entropy Web service selection undesirable outputs

Investigation of litigation in trauma orthopaedic surgery

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2023年第5期11卷 1000-1008页

作者： Maryam Salimi mohammad Bagher Heidari Zohre Ravandi Seyedarad Mosalamiaghili Peyman Mirghaderi Meisam Jafari Kafiabadi Farsad Biglari amirhossein Salimi amir Sabaghzadeh Irani Seyyed Saeed Khabiri Department of Orthopaedic Surgery Shiraz University of Medical SciencesShiraz ***Iran Department of General Surgery Kermanshah University of Medical SciencesKermanshah ***Iran Student Research Committee Kermanshah University of Medical SciencesShiraz ***Iran Student Research Committee Shiraz University of Medical SciencesShiraz 716549834Iran Students’Scientific Research Center(SSRC) Tehran University of Medical SciencesTehran 714356743Iran Clinical Research Development Unit of Shohada-e Tajrish Hospital Shahid Beheshti University of Medical SciencesTehran 715643498Iran Student Research Committee Shahid Sadoughi University of Medical SciencesYazd 719167534Iran

BACKGROUND It has been said that the number of orthopaedic claims has increased in the last few years. Investigation through the most prevalent cause would help to prevent further *** To review the cases of medical complaints in orthopedic patients who had been involved in a traumatic *** A retrospective multi-center review of trauma orthopaedic-related malpractice lawsuits from 2010 to 2021 was conducted utilizing the regional medicolegal database. Defendant and plaintiff characteristics along with fracture location, allegations, and litigation outcomes were *** A total of 228 claims referred to trauma-related conditions with a mean age of 31.29 ± 12.56 were enrolled. The most common injuries were at hand, thigh, elbow, and forearm, ***, the most common alleged complication was related to malunion or nonunion. In 47% of the cases, the main problem that led to the complaint was the inappropriate or insufficient explanation to the patient, and in 53%, there was a problem in the surgery. Eventually, 76% of the complaints resulted in a defense verdict, and 24% resulted in a plaintiff *** Surgical treatment of hand injuries and surgery in non-educational hospitals received the most complaints. The majority of litigation outcomes were caused by a physician’s failure to fully explain and educate the traumatic orthopedic patients and technological errors.

关键词： Clinical negligence Litigation Medicolegal claims Mismanagement Patient satisfaction

Experimental study of hydrogen sulfide hydrate formation: Induction time in the presence and absence of kinetic inhibitor

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2013年第1期22卷 114-118页

作者： Yousef Salamat Abdolreza Moghadassi mohammad Illbeigi Ali Eslamimanesh amir H. mohammadi Department of Chemical Engineering Faculty of Engineering Arak University Chemical Engineering Department Faculty of Engineering Isfahan University Department of Chemical & Biomolecular Engineering Clarkson University Institut de Recherche en Gnie Chimique et Ptrolier (IRGCP) Paris Cedex France Thermodynamics Research Unit School of Chemical Engineering University of KwaZulu-Natal Howard College Campus

In this paper, the effect of adding different concentrations of kinetic inhibitors on the induction time of hydrogen sulfide hydrate formation in a reactor equipped with automatic adjustable temperature controller is studied. A novel method namely ＂sudden cooling＂ is used for performing the relevant measurements, in which the induction time of H2S hydrate in the presence/absence of PVP and L-tyrosine with different concentrations （100, 500, and 1000 ppm） is determined. As a result, PVP with the concentration of 1000 ppm in aqueous solution is detected as a more suitable material for increasing the induction time of H2S hydrate formation among the investigated kinetic hydrate inhibitors.

关键词： hy^ogen sulfide gas hydrates clathrate hydrates kinetic inhibitor induction time sudden cooling

Synthesis of WC powder through microwave heating of WO_3–C mixture

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2017年第2期24卷 202-207页

作者： amir Karimzadeh Behnami Arman Hoseinpur Masoud Sakaki mohammad Sh. Bafghi Kazumichi Yanagisawa School of Metallurgy and Materials Engineering Iran University of Science and Technology (IUST) Narmak Tehran 16846-13114 Iran Department of Materials Engineering Faculty of Engineering Malayer University Malayer 65719-95863 Iran Research Laboratory of Hydrothermal Chemistry Faculty of Science Kochi University Kochi 780-8073 Japan

A simple, easy, and low-cost process for the fabrication of tungsten carbide （WC） powder through microwave heating of WO3-C mixtures was developed. Thermodynamic calculations and experimental investigations were carried out for WO3-and W-C systems, and a formation mechanism was proposed. In the results, for the synthesis of WC, the use of over stoichiometric amount of C together with a spe- cially assembled experimental setup （which effectively retains heat in the system） is necessary. The WC powder is successfully obtained by heating WO3：5C mixture for 900 s in a domestic microwave oven.

关键词： tungsten carbide microwave heating carbothermic reduction thermodynamic analysis

Flow-injection Spectrophotometric Determination of Uric Acid in Urine via Prussian Blue Reaction

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2011年第6期27卷 929-933页

作者： WASEEM amir YAQOOB mohammad NABI Abdul MURTAZA Ghulam HUSSAIN Izhar Department of Chemistry COMSATS Institute of Information Technology Department of Chemistry University of Balochistan Department of Pharmacy COMSATS Institute of Information Technology

A simple and sensitive flow injection（FI） spectrophotometric method was reported for the determination of uric acid based on the reduction of Fe（III）/ferricyanide in the presence of uric acid. The in situ reduced ions reacted with unreduced portion of ferricyanide/Fe（III） to form soluble Prussian blue, which was monitored at an absorption wavelength of 735 nm. The optimized conditions allow a linear calibration graph in a concentration range of 1―100 μmol/L. The relative standard deviation was in a range of 0.5%―2.5%, with a detection limit（3σ blank） of 0.3 μmol/L and a sampling frequency of 60 injection/h was obtained. The effect of common substances present in human physiological fluids on the determination of uric acid was examined. The method was applied to determining uric acid in human urine samples with the recoveries in a range of 96%―105%. The results agree well with those by spectrophotometric reference method at a confidence level of 95%. Spectrophotometric procedures for uric acid determination in clinical samples were reviewed briefly.

关键词： Flow injection analysis Spectrophotometry Uric acid Prussian blue Urine

A low-voltage and energy-efficient full adder cell based on carbon nanotube technology

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2010年第2期2卷 114-120页

作者： Keivan Navi Rabe'e Sharifi Rad mohammad Hossein Moaiyeri amir Momeni Faculty of Electrical and Computer Engineering Shahid Beheshti UniversityGC

Scaling problems and limitations of conventional silicon transistors have led the designers to exploit novel nano-technologies. One of the most promising and feasible nano-technologies is CNT(Carbon Nanotube) based transistors. In this paper, a high-speed and energy-efficient CNFET(Carbon Nanotube Field Effect Transistor) based Full Adder cell is proposed for nanotechnology. This design is simulated in various supply voltages, frequencies and load capacitors using HSPICE circuit simulator. Significant improvement is achieved in terms of speed and PDP(Power-Delay-Product) in comparison with other classical and state-of-the-art CMOS and CNFET-based designs, existing in the literature. The proposed Full Adder can also drive large load capacitance and works properly in low supply voltages.

关键词： CNFET Low-Voltage Full-Adder Minority-Function Nanotechnology

Leech therapy in treatment of cutaneous leishmaniasis:a case report

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Medicine 2017年第5期15卷 407-410页

作者： Nasrin Hamidizadeh amir Azizi mohammad M.Zarshenas Sara Ranjbar Molecular Dermatology Research Center Shiraz University of Medical SciencesShirazIran Research Center for Traditional Medicine and History of Medicine Shiraz University of Medical Sciences ShirazIran Departments of Phytopharmaceuticals(Traditional)Pharmacy School of PharmacyShiraz University of Medical SciencesShirazIran Medicinal Plants Processing Research Center Shiraz University of Medical SciencesShirazIran

1 IntroductionApplication of leeches has been a common treatment measure since ancient times and descriptions can be found in the works of Pliny,Galen,Avicenna and Themison.

关键词： leeching leishmaniasis, cutaneous medicine, traditional

Benzene removal by nano magnetic particles under continuous condition from aqueous solutions

在线全文

学校读者我要写书评

暂无评论

Frontiers of Environmental Science & Engineering 2014年第3期8卷 345-356页

作者： mohammad Mehdi Amin Bijan Bina amir Masoud Samani Majd Hamidreza Pourzamani Environment Research Center lsfahan University of Medical Sciences Isfahan *** Iran BAEN Department Texas A&M University TX 77843 USA

Benzene removal evaluated using Fe304 nano continuous condition. A 44 initial benzene concentration, from aqueous solutions was magnetic particles （NM） in factorial design including NM dose, contact time and pH was investigated in 16 experiments （Taguchi OA design）. The results indicated that all factors were significant and the optimum condition was： pH 8, NM dose of 2000 mg.L-1, benzene concentrations of 100 mg.L-1 and contact time of 14min. The maximum benzene uptake and distribution ratio in the optimum situation were 49.4mg.g-1 and 38.4L.g-1, respectively. The nano particles were shown to capture 98.7% of the benzene in optimum batch condition and 94.5% in continuous condition. The isotherm data proved that the Bmnauer-Emmett-Teller model fit more closely and produced an isotherm constant （b） less than one, indicating favorable adsorption. Regeneration studies verified that the benzene adsorbed by the NM could be easily desorbed by temperature, and thereby, NM can be employed repeatedly in water and wastewater management.

关键词： benzene experimental design Fe304 continues condition thermal recycling

Numerical study of influence of hydraulic fracturing on fluid flow in natural fractures

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Petroleum 2019年第3期5卷 321-328页

作者： Jaber Taheri-Shakib amir Ghaderi mohammad Amin Sharif Nik Research Institute of Petroleum Industry Department of Research and Technology of the Rock and Fluid ReservoirsIran National Iranian South Oil Company Iran Research Institute of Petroleum Industry Department of Research and Technology of the Geomechanic ReservoirsIran

The hydraulic fracturing operation is highly complex in fractured *** fundamental key to a successful operation is processing and analysis of the propagation of hydraulic fracturing in a natural fracture *** this paper,the hydraulic fracturing process is evaluated in a fractured reservoir in southwest *** developing process of induced fracture in a natural fracture network is analysed by the Distinct Element Method(DEM).After determining the fluid flow regime in the natural fractures of the reservoir,hydraulic fracturing is applied along different lengths of the reservoir and in each range,the production rate is *** flow in natural fractures after the hydraulic fracturing operation is shown and evaluated in order to evaluate the induced fracture effectiveness in enhancing fluid flow regimes in the *** reverse suction phenomenon which causes changes in the fluid flow pattern in fractures and will thus affect the production rate is also studied in this *** coalescence will cause the induction of natural fractures to hydraulically fracture without their intersection;this is one of the significant parameters in hydraulic fracturing in naturally fractured reservoirs which is also discussed in *** paper can present valuable information on fluid flow analysis before and after applying hydraulic fracturing in a fractured reservoir and solve some essential ambiguities in this area.

关键词： Hydraulic fracture Fractured reservoirs Production Coalescence Fluid flow