检索结果-南通市图书馆

Enhancing Urban Mobility: Exploring the Potential of Exclusive Motorcycle Lane Using VISSIM

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 Transportation Technologies 2023年第4期13卷 644-656页

作者： Tanveer Ahmed Lamiya Farah Chowdhury Md. Golam Sobhani A. S. M. Mohaiminul Islam Sultan Al Shafian mishuk majumder Department of Civil and Environmental Engineering The Pennsylvania State University State College USA Ardaman and Associates Inc. St. Rose USA Department of Civil and Environmental Engineering University of Maine Orono USA Department of Civil and Environmental Engineering Kennesaw State University Kennesaw USA Department of Civil & Environmental Engineering Louisiana State University Baton Rouge USA

The proliferation of Mobility on Demand (MOD) services has ushered in a surge of ridesharing platforms, catalyzing the emergence of micro mobility solutions like motorcycle sharing. Consequently, motorcycles have witnessed unprecedented growth over recent decades. This proliferation, while offering convenience, has introduced challenges such as diminished road capacity, and compromised safety. This study advocates for the implementation of exclusive motorcycle lanes to mitigate the ensuing disorderliness using VISSIM microsimulation platform. Empirical data from a key corridor in Dhaka is harnessed to calibrate and simulate network performance scenarios—pre- and post-implementation of dedicated motorcycle lanes. The outcomes of our simulation experiments exhibit the implementation of dedicated motorcycle lanes leads to a reduction in vehicular throughput but improvement the flow of motorcycles. In addition, Surrogate Safety Measures (SSMs) demonstrate the safety improvements through implementation of the treatment.

关键词： Motorcycle Lane Traffic Simulation Capacity Safety

Appraisal of pollution and health risks associated with coal mine contaminated soil using multimodal statistical and Fuzzy-TOPSIS approaches

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Environmental Science & Engineering 2024年第5期18卷 101-115页

作者： Sumit Kumar Sonali Banerjee Saibal Ghosh Santanu majumder Jajati Mandal Pankaj Kumar Roy Pradip Bhattacharyya Agricultural and Ecological Research Unit Indian Statistical InstituteGiridih815301India Department of Life and Environmental Sciences Bournemouth University(Talbot Campus)Fern BarrowPooleBH12 5BBUK School of Sciences Engineering & EnvironmentUniversity of SalfordSalfordM5 4QJUK School of Water Resource Engineering Jadavpur UniversityKolkata700032India School of Environmental Studies Jadavpur UniversityKolkata700032India

The present study assesses the concentration,probabilistic risk,source classification,and dietary risk arising from heavy metal(HMs)pollution in agricultural soils affected by coal mining in eastern part of *** of soil and rice plant indicated significantly elevated levels of HMs beyond the permissible limit in the contaminated zones(zone 1:PbSoil:108.24±72.97,CuSoil:57.26±23.91,CdSoil:8.44±2.76,CrSoil:180.05±46.90,NiSoil:70.79±25.06 mg/kg;PbGrain:0.96±0.8,CuGrain:8.6±5.1,CdGrain:0.65±0.42,CrGrain:4.78±1.89,NiGrain:11.74±4.38 mg/*** 2:PbSoil:139.56±69.46,CuSoil:69.89±19.86,CdSoil:8.95±2.57,CrSoil:245.46±70.66,NiSoil:95.46±22.89 mg/kg;PbGrain:1.27±0.84,CuGrain:7.9±4.57,CdGrain:0.76±0.43,CrGrain:8.6±1.58,NiGrain:11.50±2.46 mg/kg)compared to the uncontaminated zone(zone 3).Carcinogenic and non-carcinogenic health risks were computed based on the HMs concentration in the soil and rice grain,with Pb,Cr,and Ni identified as posing a high risk to human *** Carlo simulation,the solubility-free ion activity model(FIAM),and severity adjusted margin of exposure(SAMOE)were employed to predict health *** hazard quotient(HQ)values for Ni,Cr,Cd,and Pb were>1,indicating a significant non-carcinogenic ***(risk thermometer)results for contaminated zones ranged from low to moderate risk(CrSAMOE:0.05,and NiSAMOE:0.03).Fuzzy-TOPSIS and variable importance plots(from random forest)showed that Ni and Cr were mostly responsible for the toxicity in the rice plant,respectively.A self-organizing map for source classification revealed common origin for the studied HMs with zone 2 exhibiting the highest *** positive matrix factorization model for the source apportionment identified coal mining and transportation as the predominant sources of *** distribution analysis indicated higher contamination near mining sites as compared to distant sampling ***,this study will aid environmental scientists and policymakers controllin

关键词： Coal mine Free ion activity model Monto Carlo Simulation Pollution and Health risk Fuzzy-TOPSIS

Spatio-temporal variation and relationship between agricultural efficiency and irrigation intensity in a semi-arid region of India

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Regional Sustainability 2024年第2期5卷 123-139页

作者： Shibu DAS Kaushal Kumar SHARMA Suranjan majumder Debabrata DAS Indrajit Roy CHOWDHURY Centre for the Study of Regional Development School of Social SciencesJawaharlal Nehru UniversityNew Delhi110067India Department of Geography&Applied Geography University of North BengalDarjeeling734013India Geography Department of Krishnagar Government College Krishnagar741101India

A surging population in Karnataka State,a semi-arid region in India,poses a threat to both food security and livelihood sustainability,necessitating a concentrated effort to bolster agricultural efficiency and achieve United Naton’s Sustainable Development Goal 2(zero hunger).Therefore,in order to address the pressing issue of food scarcity in Karnataka,this study meticulously examined the spatio-temporal variation of agricultural efficiency and irrigation intensity in Karnataka,uncovering its significant dependence of agricultural efficiency on irrigation ***,this study used a one-way analysis of variance(ANOVA)to ascertain significant differences in the means of agricultural efficiency and irrigation intensity during 2004-2005 and *** study showed that the maximum improvement in agricultural efficiency index was recorded in Belgaum(40.24),Gulbarga(24.77),and Yadgir districts(22.92)between 2004-2005 and 2018-2019,which indicated the progressing trend and better scope for agriculture *** the contrary,some districts expressed threat(a decline of above 20.00 of agricultural efficiency index)and needed special care for the improvement of agricultural efficiency in four northern districts(Bagalkot,Bidar,Raichur,and Bijapur),three southern districts(Chitradurga,Chikballapur and Hassan),and two southern districts(Koppal and Gadag)in *** 2004-2005,irrigation intensity varied from 3.19%to 56.39%,with the lowest irrigation intensity in Kodagu District and the highest irrigation intensity in Shimoga *** 2018-2019,irrigation intensity changed from 0.77%to 72.77%,with the lowest irrigation intensity in Kodagu District and the highest in Dakshin Kannad ***,the research scrutinized the complex relationship between agricultural efficiency and irrigation intensity,with the correlation coefficient increased from 0.162 during 2004-2005 to 0.255 during *** implies that in both periods,a low positive

关键词： Agricultural efficiency Irrigation intensity One-way analysis of variance(ANOVA) Food security Karnataka

Graphene-calcium carbonate coating to improve the degradation resistance and mechanical integrity of a biodegradable implant

在线全文

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2024年第1期12卷 394-404页

作者： Lokesh Choudhary Parama Chakraborty Banerjee R.K.Singh Raman Derrek E.Lobo Christopher D.Easton Mainak majumder Frank Witte Jörg F.Löffler Department of Mechanical and Aerospace Engineering Monash UniversityClayton CampusMelbourneVIC 3800Australia Department of Chemical and Biological Engineering Monash UniversityClayton CampusMelbourneVIC 3800Australia Nanoscale Science and Engineering Laboratory(NSEL) Bldg 37Monash UniversityClayton CampusMelbourneVIC 3800Australia CSIRO Materials Science and Engineering Bayview AvenueClaytonVIC 3168Australia Julius Wolff Institute and Berlin Brandenburg Center for Regenerative Therapies Charité–Universitätsmedizin BerlinAugustenburger Platz 113353 BerlinGermany Laboratory of Metal Physics and Technology Department of MaterialsETH Zurich8093 ZurichSwitzerland

Biodegradable implants are critical for regenerative orthopaedic procedures,but they may suffer from too fast corrosion in human-body *** necessitates the synthesis of a suitable coating that may improve the corrosion resistance of these implants without compromising their mechanical *** this study,an AZ91 magnesium alloy,as a representative for a biodegradable Mg implant material,was modified with a thin reduced graphene oxide(RGO)-calcium carbonate(CaCO_(3))composite *** analytical and in-vitro electrochemical characterization reveals that this coating significantly improves the corrosion resistance and mechanical integrity,and thus has the potential to greatly extend the related application field.

关键词： Graphene coating Biodegradable implant Hydroxyapatite Corrosion Magnesium alloy

Investigating computational models for diagnosis and prognosis of sepsis based on clinical parameters: Opportunities, challenges, and future research directions

在线全文

学校读者我要写书评

暂无评论

Journal of Intensive Medicine 2024年第4期4卷 468-477页

作者： Jyotirmoy Gupta Amit Kumar majumder Diganta Sengupta Mahamuda Sultana Suman Bhattacharya Department of Computer Science and Engineering(IOTCSBT) Future Institute of TechnologyKolkataWest BengalIndia Department of Electronics and Communications Engineering Future Institute of TechnologyKolkataWest BengalIndia Department of Computer Science and Engineering Heritage Institute of TechnologyKolkataWest BengalIndia Department of Computer Science and Engineering Guru Nanak Institute of TechnologyKolkataWest BengalIndia

This study investigates the use of computational frameworks for *** consider two dimensions for investi-gation-early diagnosis of sepsis(EDS)and mortality prediction rate for sepsis patients(MPS).We concentrate on the clinical parameters on which sepsis diagnosis and prognosis are currently done,including customized treatment plans based on historical data of the *** identify the most notable literature that uses com-putational models to address EDS and MPS based on those clinical *** addition to the review of the computational models built upon the clinical parameters,we also provide details regarding the popular publicly available data *** provide brief reviews for each model in terms of prior art and present an analysis of their results,as claimed by the respective *** respect to the use of machine learning models,we have provided avenues for model analysis in terms of model selection,model validation,model interpretation,and model *** further present the challenges and limitations of the use of computational models,providing future research *** study intends to serve as a benchmark for first-hand impressions on the use of computational models for EDS and MPS of sepsis,along with the details regarding which model has been the most promising to *** have provided details regarding all the ML models that have been used to date for EDS and MPS of sepsis.

关键词： Sepsis Computing methodologies Early prediction of sepsis Mortality prediction of sepsis Machine learning Artificial intelligence

Bearing and uplift capacities of under-reamed piles in soft clay underlaid by stiff clay using lower-bound finite element limit analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Structural and Civil Engineering 2021年第2期15卷 537-551页

作者： Mantu majumder Debarghya CHAKRABORTY Department of Civil Engineering Indian Institute of Technology KharagpurKharagpur 721302India

Ensuring a safe foundation design in soft clay is always a challenging task to *** the present study,the effectiveness of under-reamed piles in soft clay underlaid by stiff clay is numerically studied using the lower-bound finite element limit analysis(LB FELA).The bearing and uplift capacities of under-reamed piles are estimated through non-dimensional factors N_(cul)and Fcul,*** factors increased remarkably and marginally compared to N_(cul)and Fcul of the piles without bulbs when the bulb is placed in stiff and soft clay,*** a given ratio of undrained cohesion of stiff to soft clay(c_(2)/c_(1)),the factors N_(cul)and Fcul moderately increased with the increase in the length-to-shaft-diameter ratio(Lu/D)and adhesion factors in soft clay(α_(s1))and stiff clay(αs2).The variation of radial stress along the pile-soil interface,distribution of axial force in the under-reamed piles,and state of plastic shear failure in the soil are also studied under axial compression and *** results of this study are expected to be useful for the estimation of the bearing and uplift capacities of under-reamed piles in uniform clay and soft clay underlaid by stiff clay.

关键词： bearing capacity uplift capacity under-reamed pile clay limit analysis

Meromorphic Functions Sharing One Value with Their Derivatives Concerning the Difference Operator

在线全文

学校读者我要写书评

暂无评论

Communications in Mathematics and Statistics 2017年第4期5卷 407-427页

作者： Sujoy majumder Department of Mathematics Katwa CollegeBurdwan 713130India Present Address:Department of Mathematics Raiganj UniversityRaiganjWest Bengal 733134India

Let f(z)beanon-constantmeromorphicfunctionoffiniteorder,c∈C\{0}andk∈*** f(z)and f(k)(z+c)share1CM(IM),f(z)and f(z+c)share∞*** N(r,0;f)=S(r,f)(N(r,0;f(z))+N(r,0;f(k)(z+c))=S(r,f)),then either f(z)≡f(k)(z+c)or f(z)is a solution of the following equation:f((z+c)−1=a(z)(f(z)−1))f(z)+1 a(z)),and N(r,0;f(z)+1 a(z))=S(r,f)(f′(z+c)−1=a(z)(f(z)−1)(f(z)+1 a(z)))where a(z)(≡−1,0,∞)(a(z)(≡0,∞))is a meromorphic function satisfying T(r,a)=S(r,f).Also we exhibit some examples to show that the conditions of our results are the best possible.

关键词： Uniqueness Meromorphic function·Shift operator Difference polynomial Sharing values

Observation of trapped light induced by Dwarf Dirac-cone in out-of-plane condition for photonic crystals

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2016年第10期25卷 314-322页

作者： Subir majumder Tushar Biswas Shaymal K Bhadra Fiber Optics and Photonics Division CSIR-Central Glass and Ceramic Research Institute

Existence of out-of-plane conical dispersion for a triangular photonic crystal lattice is reported. It is observed that conical dispersion is maintained for a number of out-of-plane wave vectors（k;）. We study a case where Dirac like linear dispersion exists but the photonic density of states is not vanishing, called Dwarf Dirac cone（DDC） which does not support localized modes. We demonstrate the trapping of such modes by introducing defects in the crystal. Interestingly, we find by k-point sampling as well as by tuning trapped frequency that such a conical dispersion has an inherent light confining property and it is governed by neither of the known wave confining mechanisms like total internal reflection, band gap guidance. Our study reveals that such a conical dispersion in a non-vanishing photonic density of states induces unexpected intense trapping of light compared with those at other points in the continuum. Such studies provoke fabrication of new devices with exciting properties and new functionalities.

关键词： band structure photonic band gap materials multilayers superlattices photonic structures meta-materials

A deep-reinforcement learning approach for optimizing homogeneous droplet routing in digital microfluidic biochips

在线全文

学校读者我要写书评

暂无评论

Nanotechnology and Precision Engineering 2023年第2期6卷 1-12页

作者： Basudev Saha Bidyut Das Mukta majumder Department of Computer Science and Technology University of North BengalDarjeeling 734013India Department of Information Technology Haldia Institute of TechnologyHaldia 721657India

Over the past two decades,digital microfluidic biochips have been in much demand for safety-critical and biomedical applications and increasingly important in point-of-care analysis,drug discovery,and immunoassays,among other ***,for complex bioassays,finding routes for the transportation of droplets in an electrowetting-on-dielectric digital biochip while maintaining their discreteness is a challenging *** this study,we propose a deep reinforcement learning-based droplet routing technique for digital microfluidic *** technique is implemented on a distributed architecture to optimize the possible paths for predefined source–target pairs of *** actors of the technique calculate the possible routes of the source–target pairs and store the experience in a replay buffer,and the learner fetches the experiences and updates the routing *** proposed algorithm was applied to benchmark suitesⅠand Ⅲ as two different test benches,and it achieved significant improvements over state-of-the-art techniques.

关键词： Digital microfluidics Biochip Droplet routing Fluidic constraints Deep learning Reinforcement learning