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Joint Optimal Power Source Sizing and Data Collection Trip Planning for Advanced Metering Infrastructure Enabled by Unmanned Aerial Vehicles

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Journal of Modern Power Systems and Clean Energy 2022年第5期10卷 1337-1348页

作者： Haiam shahin Mostafa F.Shaaban Mahmoud H.Ismail Hebat-Allah M.Mourad Ahmed Khattab Department of Electronics and Communications Engineering Facultyof EngineeringCairo UniversityGiza 12613Egypt IEEE Department of Electrical Engineering American University of SharjahPOBox 26666SharjahThe United Arab Emirates

The use of unmanned aerial vehicles(UAVs) in the collection of data from wireless devices, sensor nodes, and the Internet of Things(IoT) devices has recently received significant attention. In this paper, we investigate the data collection process from a set of smart meters in advanced metering infrastructure(AMI) enabled by UAVs. The objective is to minimize the total annual cost of the electric utility by jointly optimizing the number of UAVs, their power source sizing, the charging locations as well as the data collection trip planning. This is achieved while considering the energy budgets of batteries of UAVs and the required amount of collected data. The problem is formulated as a mixed-integer nonlinear programming(MINLP), which is decoupled into two sub-problems where a candidate UAV and a number of buildings are first grouped into trips via genetic algorithms(GAs), and then the optimum trip path is found using a traveling salesman problem(TSP) branch and bound algorithm. Simulation results show that the battery capacity or the number of UAVs increases as the coverage area or the density increases.

关键词： Advanced metering infrastructure unmanned aerial vehicle power source sizing trip planning genetic algorithm

Meta-analysis of transanal vs laparoscopic total mesorectal excision of low rectal cancer:Importance of appropriate patient selection

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World Journal of Gastrointestinal Surgery 2022年第12期14卷 1397-1410页

作者： Pratik Bhattacharya Ishaan Patel Noureen Fazili Shahab Hajibandeh shahin Hajibandeh Department of Surgery Sandwell and West Birmingham Hospitals NHS TrustBirmingham B714HJUnited Kingdom Department of Surgery Queen Elizabeth Hospital BirminghamBirmingham B152GWUnited Kingdom Department of Surgery University Hospital of WalesCardiff CF144XWUnited Kingdom Department of Surgery Royal Stoke University HospitalStoke-on-Trent ST46QGUnited Kingdom

BACKGROUND Achieving a clear resection margins for low rectal cancer is technically *** approach to total mesorectal excision(TME)was introduced in order to address the challenges associated with the laparoscopic approach in treating low rectal ***,previous meta-analyses have included mixed population with mid and low rectal tumours when comparing both approaches which has made the interpretation of the real differences between two approaches in treating low rectal cancer *** To investigate the outcomes of transanal TME(TaTME)and laparoscopic TME(LaTME)in patients with low rectal *** A comprehensive systematic review of comparative studies was performed in line with Preferred Reporting Items for Systematic Reviews and Meta-Analyses *** and postoperative complications,anastomotic leak,R0 resection,completeness of mesorectal excision,circumferential resection margin(CRM),distal resection margin(DRM),harvested lymph nodes,and operation time were the investigated outcome *** We included twelve comparative studies enrolling 969 patients comparing TaTME(n=969)and LaTME(n=476)in patients with low rectal *** was associated with significantly lower risk of postoperative complications(OR:0.74,P=0.04),anastomotic leak(OR:0.59,P=0.02),and conversion to an open procedure(OR:0.29,P=0.002)in comparison with ***,the rate of R0 resection was significantly higher in the TaTME group(OR:1.96,P=0.03).Nevertheless,TaTME and LaTME were comparable in terms of rate of intraoperative complications(OR:1.87;P=0.23),completeness of mesoractal excision(OR:1.57,P=0.15),harvested lymph nodes(MD:-0.05,P=0.96),DRM(MD:-0.94;P=0.17),CRM(MD:1.08,P=0.17),positive CRM(OR:0.64,P=0.11)and procedure time(MD:-6.99 min,P=0.45).CONCLUSION Our findings indicated that for low rectal tumours,TaTME is associated with better clinical and short term oncological outcomes compared to *** randomised controll

关键词： Total mesorectal excision Laparoscopic Transanal Rectal cancer

Comparative Effect of Propolis of Honey Bee and Some Herbal Extracts on Candida Albicans

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Chinese Journal of Integrative Medicine 2017年第3期23卷 201-207页

作者： shahin Gavanji Behrouz Larki Young Researchers and Elite Club Isfahan (Khorasgan) BranchIslamic Azad University Isfahan Iran

Objective： To determine the effect of propolis on Candida albicans and to compare it with the effects of some other herbal extracts and antibiotics on this pathogenic fungi. Methods： The extracts of propolis, Thymus vulgaris, Caryophillium aromaticus, Echinophora platyloba, Allium cepa and Cinnamomum zeylanicumwere prepared and the antifungi effects of the extracts were examined on Candida albicans ATCC10231 using disc-diffusion assay and micro-broth dilution. The minimum fungicidal concentration（MFC） and minimum inhibitory concentrations（MIC） as well as inhibition zone were evaluated and the anti fungi effects of herbal extracts were compared with amphotricin B and nystatin at the times of 24, 48 and 72 h. Data analysis was performed using t test. Results： Obtained results showed that propolis extract with MIC90 and MFC equal to 39 and 65 μg/mL, respectively, possess the highest antifungal activity when compared with other studied extracts. The extracts of Allium cepa and Thymus vulgaris, with MFC of 169 and 137 μg/mL, respectively, showed the lowest effects on the fungi. Also nystatin and amphotricin B yielded better effects on the tested fungi compared with the effects of all studied extracts on Candida albicans. Conclusions： Propolis extract is effective in controlling Candida albicans. However, the issue requires further investigation on samples in animals and performing toxicological examinations.

关键词： Candida albicans propolis herbal extract antibiotics

Impact of gender on outcomes after transcatheter aortic valve implantation

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Journal of Geriatric Cardiology 2018年第6期15卷 394-400页

作者： Nooraldaem Yousif Slayman Obeid Ronald Binder Andrea Denegri Mohammady shahin Christian Templin Thomas F Luscher Department of Cardiology University Heart Center University Hospital Zurich Switzerland and Royal Brompton & Harefield Hospital imperial College London United Kingdom

Backgound The influence of gender on clinical outcomes following transcatheter aortic valve implantation （TAVI） was considerably discrepant in previous studies. We aimed to investigate the impact of gender in our registry. Methods The study is a retrospective observational analysis of a prospectively designed cohort （546 consecutive patients treated at the University Hospital Zurich who were enrolled in Swiss TAVI Cohort from May 2008 to April 2014）. The Study took place in University Heart Centre at University Hospital Zurich, Switzerland. Results Both genders were equally represented with 51.5 % （n = 281） of the populations being females, who were significantly older and had a more pronounced history of hypertension （P 〈 0.001 ）. Males on the other hand showed a higher incidence of diabetes （P = 0.004）, coronary artery disease （P 〈 0.001）, chronic obstructive pulmonary disease （P 〈 0.001） and renal failure requiring renal replacement therapy （P = 0.018）. Patients were followed up for a median of 391 days with a 100% complete follow-up at one year. The primary outcome （all-cause mortality） occurred in 6.8% （n = 37） and 15% （n = 82） of patients at 30 days and one year, respectively. The 30-day all-cause mortality outcome did not significantly differ between females （7.5%） and males （6.0%）（P = 0.619）, but one year all-cause mortality occurred significantly more in males than in females （18.7% vs. 11.7%, P 〈 0.037）. Conclusion After TAVI implantation for severe aortic stenosis, males have a less favorable long-term （one year） mortality outcome than females.

关键词： Aortic stenosis Aortic valve Gender Transcatheter aortic valve implantation

Facile in‐situ synthesis and deposition of monodisperse palladium nanoparticles on polydopamine‐functionalized silica gel as a heterogeneous and recyclable nanocatalyst for aerobic oxidation of alcohols

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Chinese Journal of Catalysis 2018年第6期39卷 1044-1050页

作者： Hojat Veisi Ahmad Nikseresht shahin Mohammadi Saba Hemmati Department of Chemistry Payame Noor UniversityTehran Ira

This paper describes a facile in‐situ synthesis of palladium nanoparticles （Pd NPs） on silica gel/polydopamine composite（SiO2/PDA） without any stabilizer or reducing agent. In this approach, palladium ions were adsorbed on SiO2/PDA surfaces by immersing the PDA‐coated SiO2 particles in a palladium plating bath. Then, they were reduced in situ to Pd nanoclusters by the reducing ability of PDA＇s N‐containing groups. The structure, morphology, and physicochemical properties of the synthesized nanocomposites were characterized by different analytical techniques such as high‐resolution transmission electron microscopy, field‐emission scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, X‐ray diffraction analysis, X‐ray photoelectron spectroscopy, inductively coupled plasma and Fourier‐transform infrared spectroscopy. The Pd NPs capped by the PDA groups had a strikingly small size（30–40 nm）. SiO2/PDA/Pd NPs exhibited high catalytic activ‐ity as a recyclable nanocatalyst in the aerobic oxidation of alcohols. Furthermore, recovery and multiple reuse of the catalyst revealed no detectable activity loss.

关键词： Silica Polydopamine Palladiumnanoparticle OxidationAlcohol

Limit analysis for the seismic stability of three-dimensional rock slopes using the generalized Hoek-Brown criterion

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International Journal of Mining Science and Technology 2022年第2期32卷 237-245页

作者： A.Karrech X.Dong M.Elchalakani H.Basarir M.A.shahin K.Regenauer-Lieb School of Engineering University of Western AustraliaCrawleyWA 6009Australia Department of Geoscience and Petroleum Norwegian University of Science and TechnologyTrondheim 7031Norway School of Civil and Mechanical Engineering Curtin UniversityPerth 6102Australia School of Minerals and Energy Resources Engineering UNSWSydneyNSW 2052Australia

The parameters that influence slope stability and their criteria of failure are fairly understood but over-conservative design approaches are often preferred,which can result in excessive overburden removal that may jeopardize profitability in the context of open pit *** methods such as finite element and discrete element modelling are instrumental to identify specific zones of stability,but they remain approximate and do not pinpoint the critical factors that influence stability without extensive parametric studies.A large number of degrees of freedom and input parameters may make the outcome of numerical modelling insufficient compared to analytical *** analytical approaches have not tackled the stability of slopes using non-linear plasticity criteria and threedimensional failure *** paper bridges this gap by using the yield design theory and the Hoek-Brown ***,the proposed model includes the effect of seismic forces,which are not always taken into account in slope stability *** results are presented in the form of rigorous mathematical expressions and stability charts involving the loading conditions and the rock mass properties emanating from the plasticity criterion.

关键词： Three-dimensional slope Seismic stability Generalized Hoek-Brown criterion Open pit

Influence of Specimen Geometry of Hot Torsion Test on Temperature Distribution During Reheating Treatment of API-X70

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Journal of Iron and Steel Research International 2010年第3期17卷 34-39页

作者： Bahman Mirzakhani shahin Khoddam Hossein Arabi Mohammad Taghi Salehi Seyed Hossein Seyedein Mohammad Reza Aboutalebi Faculty of Engineering Arak University Department of Mechanical Engineering Monash UniversityClayton Campus Department of Materials and Metallurgical Engineering Iran University of Science and Technology

The commercial finite element package ANSYSTM was utilized for prediction of temperature distribution during reheating treatment of hot torsion test （HTT） samples with different geometries for API-X70 microalloyed steel. Simulation results show that an inappropriate choice of test specimen geometry and reheating conditions before deformation could lead to non-uniform temperature distribution within the gauge section of specimen. Therefore, assumptions of isothermal experimental conditions and zero temperature gradient within the specimen cross section appear unjustified and led to uncertainties of flow curve obtained. Recommendations on finding proper specimen geometry for reducing temperature gradient along the gauge part of specimen will be given to create homogeneous initial microstructure as much as possible before deformation in order to avoid uncertainty in consequent results of HTT.

关键词： hot torsion test simulation specimen geometry reheating treatment microalloyed steel

Yin and Yang of Body Composition Assessment

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Chinese Journal of Integrative Medicine 2011年第9期17卷 675-679页

作者： Ahmedov shahin School of Physical Education and Sport Near East UniversityNicosiaCyprus Mersin10Turkey

Objectve：To define if such crucial body composition parameters like body density（Db） and body surface area（BSA） could be considered in the frame of yin-yang concept,i.e.,one of the most popular in conventional biomedical science theories of Chinese ***：Standardized Eurofit Pysical Fitness Test Battery reports of 715 junior school children have been evaluated for association of their body composition parameters with corresponding motoric fitness test *** for BSA and Db calculation included height,weight,and skin-fold thickness values of the ***：Correlative analysis of major physical fitness parameters,obtained from 715 junior school children,demonstrated that participants with high BSA/Db ratio had better yang-featured anaerobic performance,whereas those with low BSA/Db ratio presented with better yin-featured aerobic *** result coincided with proposed suggestions to treat BSA as external yang component and Db as internal yin component of body *** confidence intervals for BSA/ Db ratio ranged between 1.073-1.15,which can be accepted as optimal for junior school children yang/yin ratio of body ***：Easily accessible BSA and Db can provide specialists with useful preliminary information for generating reasonable exercise and nutritional programs.

关键词： body composition yin yang body density body surface area

Professional identity, wellness, and future hope among nurse interns in Egypt

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Frontiers of Nursing 2021年第3期8卷 279-290页

作者： Rasha Mohammed Hussien Mahmoud Abdul Hameed shahin Mervat Elshahat Ibrahim Department of Psychiatric Health Nursing Faculty of NursingZagazig UniversityZagazig 423423Egypt Critical Care Nursing Department Mohammed Al-Mana College for Medical SciencesDammam 34222Saudi Arabia Department of Family and Community Health Nursing Faculty of NursingSuez Canal UniversityIsmailia 545345Egypt

Objective:Since nursing is a performance-based profession,clinical learning environments play an important role in the acquisition of professional abilities and train nursing students to enter the nursing profession and become a registered *** study aimed to investigate the relations among professional identity,wellness,and future hope in nurse ***:A cross-sectional,analytic,descriptive,correlational study design was used to test these relations in the study where 210 nurse interns’students were selected using a convenience sampling from Zagazig University hospitals and Suez Canal University hospitals in *** questionnaires consisted of 4 parts,namely demographic characteristics,Professional Identity Scale for Nursing Students(PISNS),Holistic Health and Wellness Survey,and Hope ***:Less than half of the study sample had chosen nursing specialty by own will(43.8%),while slightly more than half of them had a"very good"graduation level,and had no nursing role *** lowest mean professional identity score was for independence in career choice while the highest was for social *** repor ted physical wellness mean-score was the least,while social wellness was the *** identity,wellness,and future hope scores differed significantly based on nurse interns’personal *** were statistically significant,positive,weak-to-moderate correlations among the scores of professional identity,wellness,and future hope;however,the"choice of nursing study by own will"was a statistically significant independent positive predictor of the scores of professional identity,wellness,and future ***:Nurse interns’professional identity,wellness,and future hope were positively ***,nurse interns’wellness was the lowest,and it should be fostered as it was the main predictor for future *** internship programs should be modulated to improve nurse interns’professional identity,par ticularly

关键词： hope identity independence internship nurse interns professional wellness