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In-depth investigation and applications of novel silicon photonics microstructures supporting optical vorticity and waveguiding for ultranarrowband near-infrared perfect absorption

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Photonics Research 2020年第3期8卷 381-394页

作者： ROY AVRAHAMY MOSHE ZOHAR MARK AUSLENDER benny milgrom SHLOMO HAVA RAFI SHIKLER School of Electrical and Computer Engineering Ben-Gurion University of the NegevBeer-Sheva 84105Israel Electrical and Electronics Engineering Department Shamoon College of EngineeringBeer-Sheva 84100Israel School of Electrical Engineering The Jerusalem College of TechnologyJerusalem 91160Israel Ilse Katz Institute for Nanoscale Science&Technology Ben-Gurion University of the NegevBeer-Sheva 84105Israel

We propose a novel concept of designing silicon photonics metamaterials for perfect near-infrared light *** study's emphasis is an in-depth investigation of various physical mechanisms behind the^100%ultranarrowband record peak absorptance of the designed structures,comprising an ultrathin silicon *** electromagnetic power transport,described by the Poynting vector,is innovatively explored,which shows combined vortex and crossed-junction two-dimensional waveguide-like flows as outcomes of optical field *** flows,though peculiar for each of the designed structures,turn out to be key factors of the perfect resonant optical *** electromagnetic fields show tight two-dimensional confinement:a sharp vertical confinement of the resonant-cavity type combined with a lateral metasurface supported *** siliconabsorbing layer and its oxide environment are confined between two subwavelength metasurfaces such that the entire design is well compatible with silicon-on-insulator *** design concept and its outcomes meet the extensive challenges of ultrathin absorbers for minimum noise and an ultra-narrowband absorptance spectrum,while maintaining an overall very thin structure for planar *** these materials and such objectives,the proposed designs seem essential,as standard approaches fail,mainly due to a very low silicon absorption coefficient over the near-infrared *** tests for fabrication errors show fair tolerability while maintaining a high absorptance peak,along with a controllable deviation off the central-design *** applications are suggested and analyzed,which include but are not limited to:efficient photodetectors for focal plane array and on-chip integrated silicon photonics,high-precision spectroscopic chemical and angular-position sensing,and wavelength-division multiplexing.

关键词： optical waveguide perfect

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Antenna and Anti-antenna

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Journal of Energy and Power Engineering 2020年第6期14卷 187-192页

作者： Michael Bank benny milgrom Yuri Shalyt The Department of Cellular Communication Engineering Jerusalem College of TechnologyGivat Mordechai 91160JerusalemIsrael

One of today’s actual problems in the field of antennas is the possibility of developing a small wideband antenna,which can work without *** of these antennas can lead to serious problems for example in case of designing small transceivers for cellular *** this article we show a proposed version of these *** there do not exist theoretical investigations of connections between electromagnetic fields and currents in flat metallic ***,the basis of this work is optimization of proposed antenna construction by simulations.

关键词： Wide band triangle antenna quarter wave length omni-directional cellular satellite system

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华尔街“赌徒” 比尔·黄被判有罪

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商业周刊（中文版） 2024年第11期 22-23页

作者： Sridhar Natarajan Ava benny-Morrison Katherine Burton 王非(译) 不详

这位在一周内赔掉360亿美元的著名金融家现在或面临牢狱之灾。比尔·黄(Bill Hwang)说,那来自他的一个梦。在梦里,基督的鲜血冲刷着纽约,洗涤着这座大都市的罪恶。比尔·黄被这个意象深深打动,于是委托一位著名艺术家把他的梦境呈现出来。

关键词：牢狱之灾华尔街大都市金融家赌徒

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Characterization of mechanical properties for tubular materials based on hydraulic bulge test under axial feeding force

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Fundamental Research 2023年第4期3卷 592-601页

作者： Bin Zhang benny Endelt Karl Brian Nielsen Department of Materials and Production Aalborg UniversityAalborg 9220Denmark Engineering Teaching Practice Training Center Tiangong UniversityTianjin 300387China Research and Development Lab Vestas aircoil A/SLem 6940Denmark Department of Mechanical and Production Engineering Aarhus UniversityAarhus 8000Denmark

A T-shape tube hydraulic bulge test under axial feeding force is carried out to characterize the mechanical properties of EN AW 5049-O and 6060-O aluminium *** punch displacement,T-branch height and axial compressive force are recorded online during the *** intelligent inverse identification framework combining the finite element method and numerical optimization algorithm is developed to determine material parameters by fitting simulated results to the experimental data *** identified constitutive parameters using the inverse modelling technique are compared with those determined by the theoretical analysis and uniaxial tensile *** comparison shows that the predicted bulge height and punch force based on the material parameters obtained by the three methods are different and the inverse strategy produces the smallest gap between numerical and experimental *** is possible to conclude that the hydraulic bulge test can be applied to characterize the stress-strain curve of tubular materials at the large strain scope,and the automatic inverse framework is a more accurate post-processing procedure to identify material constitutive parameters compared with the classical analytical model.

关键词： Intelligent optimization Tubular material Parameter identification Hydraulic bulge test Constitutive model

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An inverse strategy to determine constitutive parameters of tubular materials for hydroforming processes

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Chinese Journal of Aeronautics 2022年第6期35卷 379-390页

作者： Bin ZHANG benny ENDELT Lihui LANG Yang ZHAO Shu YAN Karl Brian NIELSEN Department of Materials and Production Aalborg UniversityAalborg 9220Denmark School of Mechanical Engineering and Automation Beihang UniversityBeijing 100083China School of Materials Science and Engineering Northeastern UniversityShenyang 110819China Department of Mechanical and Production Engineering Aarhus UniversityAarhus 8000Denmark

This paper is to determine the flow stress curve of 5049-O aluminium alloy by a tube hydraulic bulging test with fixed end-conditions. During this test, several tubular specimens are bulged under different internal pressures before their bursting, and the corresponding bulging height and wall thickness at the pole are measured. An inverse strategy is developed to determine the constitutive parameters of tubular materials based on experimental data, which combines the finite element method with gradient-based optimization techniques. In this scheme, the objective function is formulated with the sum of least squares of the error between numerical and experimental data, and finite difference approximation is used to calculate the gradient. The tubular material behavior is assumed to meet the von Mises yield criterion and Hollomon exponential hardening law. Then, constitutive parameters identification is performed by minimization of the objective function. In order to validate the performance of this framework, identified parameters are compared with those obtained by two types of theoretical models, and tensile tests are performed on specimens cut from the same tubes. The comparison shows that this inverse framework is robust and can achieve a more accurate parameter identification by eliminating mechanical and geometrical assumptions in classical theoretical analysis.

关键词： Aluminum alloy Constitutive parameter Hydraulic bulging test Inverse modelling Tubular material

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Subjective scar assessment scales in orthopaedic surgery and determinants of patient satisfaction: A systematic review of the literature

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中华创伤杂志:英文版 2023年第5期26卷 276-283页

作者： Diego A Abelleyra Lastoria Clerin K benny Caroline B Hing Institute for Medical and Biomedical Education St George's University of LondonLondonSW17 OREUnited Kingdom Faculty of Medicine Medical University of SofiaSofia1641Bulgaria Department of Trauma and Orthopaedics St George's University Hospitals NHS Foundation TrustLondonSW17 OQTUnited Kingdom

Purpose:Scar assessment tools can be utilized during the post-operative period to monitor scar *** primary aim of this systematic review was to evaluate current subjective scar assessment scales utilized in orthopaedic *** secondary aim was to identify determinants of patients'satisfaction with their scars and evaluate current measurement ***:The preferred reporting items for systematic reviews and meta-analyses checklist was *** databases,curently registered studies,conference proceedings and the reference lists of included studies were *** were no constraints based on language or publication status.A narrative synthesis provided a description and evaluation of scales utilized in orthopaedic *** of patient satisfaction were identified along with the scales used to measure ***:A total of 6059 records were screened in the initial ***-six articles satisfied the inclusion criteria,assessing 7130 *** the literature,six validated subjective scar scales were identified,including the Vancouver scar scale,patient and observer scar assessment scale,Manchester scar scale,Stony Brook scar evaluation scale,visual analogue scale,and Hollander wound evaluation *** utilizing these scales to evaluate scars following orthopaedic procedures did so *** were total hip arthroplasty,total knee arthroplasty,and limb *** scales demonstrated satisfactory *** outcomes such as restoration of movement ranked among patients'highest *** cosmesis was found to be amongst patients'lowest ***:Subjective scar assessment scales identified in the literature were not designed specifically for orthopaedic ***,these were able to appropriately assess scars in the studies identified in this *** evidence suggests the effect of scar cosmesis on patient satisfaction with orthopaedic procedures is li

关键词： Scar Cosmesis Orthopaedics Patient satisfaction

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From pandemic to a new normal:Strategies to optimise governmental interventions in Indonesia based on an SVEIQHR-type mathematical model

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Infectious Disease Modelling 2022年第3期7卷 346-363页

作者： benny Yong Jonathan Hoseana Livia Owen Center for Mathematics and Society Department of MathematicsParahyangan Catholic UniversityBandung40141Indonesia

There are five different forms of intervention presently realised by the Indonesian government in an effort to end the COVID-19 pandemic:vaccinations,social restrictions,tracings,testings,and *** this paper,we construct a mathematical model of type SVEIQHR(susceptible-vaccinated-exposed-infected-quarantined-hospitalised-recovered)for the disease's spread in the country,which incorporates as parameters the rates of the above interventions,as well as the vaccine's *** determine the model's equilibria and basic reproduction *** the model,we formulate strategies by which the interventions should be realised in order to optimise their *** results show that,in a disease-free state,when the number of new cases rises,the best strategy is to implement social restrictions,whereas in an endemic state,if a near-lockdown policy is undesirable,carrying out vaccinations is the best strategy;however,efforts should be aimed not primarily towards increasing the vaccination rate,but towards the use of highefficacy vaccines.

关键词： COVID-19 Equilibrium Basic reproduction number Intervention Social restriction Vaccination

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Crowdsourced Road Semantics Mapping Based on Pixel-Wise Confidence Level

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Automotive Innovation 2022年第1期5卷 43-56页

作者： benny Wijaya Kun Jiang Mengmeng Yang Tuopu Wen Xuewei Tang Diange Yang State Key Laboratory of Automotive Safety and Energy and Center for Intelligent Connected Vehicles and TransportationTsinghua UniversityBeijing 100084China

High-definition map has become a vital cornerstone in the navigation of autonomous vehicles in complex traffic ***,the construction of high-definition maps has become *** methods relying on expensive mapping vehicles equipped with high-end sensor equipment are not suitable for mass map construction because of the limitation imposed by its high ***,this paper proposes a new method to create a high-definition road semantics map using multi-vehicle sensor *** proposed method implements crowdsourced point-based visual SLAM to align and combine the local maps derived by multiple *** allows users to modify the extraction process by using a more sophisticated neural network,thus achieving a more accurate detection result when compared with traditional binarization *** resulting map consists of road marking points suitable for autonomous vehicle navigation and path-planning ***,the method is evaluated on the real-world KAIST urban dataset and Shougang dataset to demonstrate the level of detail and accuracy of the proposed map with 0.369 m in mapping errors in ideal condition.

关键词： Crowdsourced mapping Map fusion SLAM Semantic mapping

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Removal performance,mechanisms,and influencing factors of biochar for air pollutants:a critical review

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Biochar 2022年第1期4卷 678-701页

作者： Zhipeng Zhao Bing Wang benny K.G.Theng Xinqing Lee Xueyang Zhang Miao Chen Peng Xu College of Resource and Environmental Engineering Guizhou UniversityGuiyang 550025China Key Laboratory of Karst Georesources and Environment Ministry of EducationGuiyang 550025China Manaaki Whenua-Landcare Research Palmerston NorthNew Zealand State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China Jiangsu Key Laboratory of Industrial Pollution Control and Resource Reuse School of Environmental EngineeringXuzhou University of TechnologyXuzhou 221018China

The emission of air pollutants from various industries is a major contributor to environmental *** removal of these pollutants before they are discharged into the environment has become an important means of controlling air *** has attracted increasing attention because of its low cost,high porosity,large specific surface area,abundant surface functional groups,and high removal *** physicochemical properties of biochar are greatly affected by feedstock types,preparation,and modification *** this reason,the capacity and propensity of biochar for removing air pollutants are rather *** understand the existing research status and grasp the latest research progress,a systematic review on the removal of different air pollutants by biochar is highly *** on the recent research,this paper systematically analyzes and summarizes the preparation and modification methods of biochar commonly used for the removal of six air pollutants(SO_(2),H_(2)S,CO_(2),Hg0,VOCs,and NH_(3)),as well as the removal performance and ***,the potential influencing factors(preparation parameters,physicochemical characteristics of biochar,and removal conditions)are ***,the regeneration of biochar,suggestions,and future perspectives are proposed.

关键词： Biochar Modification Air pollutants Removal performance Removal mechanisms Influencing factors

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Effects of natural products on ischemic heart diseases and cardiovascular system

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Acta Pharmacologica Sinica 2002年第12期23卷 89-98页

作者： benny KH TAN,Matthew WHITEMAN Department of Pharmacology Department of Biochemistry Faculty of Medicine National University of Singapore Singapore

INTRODUCTION Ischemic heart diseases remain the leading causeof death in most developed countries as seen over thepast quarter-century. Reducing the mortality rate andprevention of myocardial infarction (MI) are of utmostimportance. The use of Western medicinal drugs forthe treatment of hypertension, congestive heart failureand post MI are widely accepted. Although some Tra-ditional Chinese Medicines have been used in mainland,Hong Kong, Taiwan of China in clinics and other Chi-nese communities worldwide for centuries, our under-

关键词： myocardial infarction herbal medicine antioxidants cardiovascular system Salvia miltiorrhiza

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