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EXTENDED WARRANTY STRATEGIES FOR ONLINE SHOPPING SUPPLY CHAIN WITH COMPETING SUPPLIERS CONSIDERING COMPONENT RELIABILITY

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Journal of Systems Science and Systems Engineering 2017年第6期26卷 753-773页

作者： Xinghong Qin Qiang Su samuel H. Huang 1.School of Economics and Management Tongji University Shanghai 200092 China 2.School of Business Planning Chongqing Technology and Business University Chongqing 400067 China 3.Department of Mechanical and Materials Engineering University of Cincinnati Cincinnati OH 45221 USA

This article presents the issue of extended warranty and management strategies in a three-echelon competing online shopping supply chain with price- and base warranty period-dependent demand. We employ game theory to develop decision models to explore the interactions between component suppliers and the manufacturer, as well as competition between two component suppliers. Products and extended warranty are sold by an online store, which is the leader in the Stackelberg game. Two scenarios are considered： either the manufacturer offers a prepaid extended warranty to customers or doses not. In each scenario, base warranties are assumed to be bundled with products. Our results show that when the manufacturer＇s repair costs change in a proper range, providing extended warranty can benefit both the manufacturer and the online store; otherwise, the manufacturer has no incentive to offer the extended warranty. Reducing repair costs, improving component reliability, or shortening the base warranty period allows the manufacturer to realize significantly better value of the extended warranty. High component reliability benefits both the manufacturer and the online store, with the manufacturer reaping more benefit. Extending the length of the base warranty adversely affects profit of the manufacturer and the value of the extended warranty.

关键词： Extended warranty online shopping supply chain game theory online shopping

A correction of the 2D KdV equation of Djordjevic & Redekopp in exponentially stratified fluid

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Acta Mechanica Sinica 2005年第4期21卷 346-352页

作者： Zhaoting Xu Guojin Shen samuel Shan-pu Shen Institute Of Physical Oceanography and Physical Oceanography Laboratory Ocean University of China Qingdao 266003 China Department of Mathematics and Statistics Science University of Alberta Edmonton Alberta T6G 2G 1 Canada

To further study the nal solitons on the continental fission laws of initial intershelf/slope, we rederive and correct the 2D KdV equation of Djordjevic ＆ Redekopp for exponentially stratified fluid （or ocean） and with twodimensional topography. Through a combination of theoretical study and numerical experiments, we show that solitons in the odd vertical modes can fission. However, because of the corrections, the fission conditions are different from those of Djordjevic ＆ Redekopp. The even modes cannot fission unless the initial internal solitons propagate from shallow sea to deep sea. This conclusion is entirely opposite to that of Djordjevic ＆ Redekopp.

关键词： Internal wave Soliton Fission 2D KdV equation

Ethical decision-making in older drivers during critical driving situations: An online experiment

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Journal of Intelligent and Connected Vehicles 2024年第1期7卷 30-37页

作者： Amandeep Singh Sarah Yahoodik Yovela Murzello samuel Petkac Yusuke Yamani Siby samuel Department of Systems Design Engineering University of WaterlooWaterloo N2L 3G1Canada Department of Psychology Old Dominion UniversityNorfolk 23529USA

The present study examined the impact of aging on ethical decision-making in simulated critical driving scenarios.204 participants from North America,grouped into two age groups(18–30 years and 65 years and above),were asked to decide whether their simulated automated vehicle should stay in or change from the current lane in scenarios mimicking the Trolley *** participant viewed a video clip rendered by the driving simulator at Old Dominion University and pressed the space-bar if they decided to intervene in the control of the simulated automated vehicle in an online *** hierarchical models were used to analyze participants’responses,response time,and acceptability of utilitarian ethical *** results showed significant pedestrian placement,age,and time-to-collision(TTC)effects on participants’ethical *** pedestrians were in the right lane,participants were more likely to switch lanes,indicating a utilitarian approach prioritizing pedestrian *** participants were more likely to switch lanes in general compared to older *** results imply that older drivers can maintain their ability to respond to ethically fraught scenarios with their tendency to switch lanes more frequently than younger counterparts,even when the tasks interacting with an automated driving *** current findings may inform the development of decision algorithms for intelligent and connected vehicles by considering potential ethical dilemmas faced by human drivers across different age groups.

关键词： ethical decision making age-differences utilitarianism moral dilemmas driver behavior simulated driving bayesian hierarchical model

Physical universals in problem of precursor soliton generation

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Science China Earth Sciences 1997年第3期40卷 306-314页

作者：徐肇廷 samuel Shan-pn SHEN Institute of Physical Oceanography and Physical Oceanography Laboratory Ocean University of QingdaoQingdao 266003 China Department of Mathematics and Applied Mathematics Institute University of AlbertaEdmondon T6G 2G1Canada

Six physical universals and two general relations in the problem of locally forced precursor soliton generation are found theoretically in terms of the AfKdV equation derived by authors. These six universals and two general relations are examined by experiment and numerical calculation of two-layer flow based on the canonical character of the coefficients of the fKdV equations. From comparisons among the theoretical, numerical and experimental results, it is shown that they are in good agreement. There is not any free parameter in this theory, so the theory of the present paper can be used to predict the wave properties of locally forced precursor soliton generation.

关键词： precursor soliton fKdV equation AfKdV equation physical universal

An evaluation of digital elevation modeling in GIS and Cartography

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Geo-Spatial Information Science 2014年第2期17卷 139-144页

作者： Bola AYENI Kayode Julius samuel Department of Geography University of IbadanIbadanNigeria Department of Geography&Resource Management Osun State UniversityOkukuNigeria

This study considers seven commonly used surface fitting methods within Golden Software and ArcGIS^(TM) *** grid sizes of 68 rows by 100 columns(6800 grids)and 680 rows by 1000 columns(680,000 grids)and 294,208 elevation points covering the entire landmass of Nigeria,the study evaluates the performance of these methods in terms of execution time and faithfulness in the representation of the spatial *** show marked differences in time taken to execute the fitting and that Inverse Distance,the Natural Neighbor,the Nearest Neighbor,and Triangulation with Linear Interpolation seem to give the highest level of correspondence or faithfulness.

关键词： image surface fitting digital elevation modelling GIS cartography

On Models of Nonlinear Evolution Paths in Adiabatic Quantum Algorithms

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Communications in Theoretical Physics 2013年第1期59卷 22-26页

作者：孙杰路松峰 samuel L.Braunstein School of Computer Science Huazhong University of Science and Technology Department of Computer Science University of York

In this paper,we study two different nonlinear interpolating paths in adiabatic evolution algorithms for solving a particular class of quantum search problems where both the initial and final Hamiltonian are one-dimensional projector Hamiltonians on the corresponding ground *** the overlap between the initial state and final state of the quantum system is not equal to zero,both of these models can provide a constant time speedup over the usual adiabatic algorithms by increasing some another corresponding "complexity".But when the initial state has a zero overlap with the solution state in the problem,the second model leads to an infinite time complexity of the algorithm for whatever interpolating functions being applied while the first one can still provide a constant running ***,inspired by a related reference,a variant of the first model can be constructed which also fails for the problem when the overlap is exactly equal to zero if we want to make up the "intrinsic" fault of the second model - an increase in *** concrete theorems are given to serve as explanations why neither of these two models can improve the usual adiabatic evolution algorithms for the phenomenon *** just tell us what should be noted when using certain nonlinear evolution paths in adiabatic quantum algorithms for some special kind of problems.

关键词： adiabatic evolution nonlinear evolution paths quantum computing

Experimental evaluation of autonomous map-based Spot navigation in confined environments

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Biomimetic Intelligence & Robotics 2022年第1期2卷 50-58页

作者： Anton Koval samuel Karlsson George Nikolakopoulos Robotics&AI Team Deparment of ComputerElectrical and Space Engineering.Luled University of TechunologyLuled SE-97187Sweden

In this article,we address the task of experimental evaluation of autonomous map-based navigation of a Boston Dynamics Spot quadruped robot in confined environments equipped with the developed autonomy package that incorporates a 3D lidar,an IMU,and an onboard *** that,we propose an integrated software and hardware system that is considered as an enabler for robot localization and risk-aware path planning,based on the known *** system design itself is modular and incorporates the perception capabilities required for autonomous *** Spot robot first is utilized to build the offline map of the environment by utilizing the Google Cartographer simultaneous localization and mapping(SLAM)*** the next step,the online environmental information from the autonomy package sensors and the offline map are provided to the onboard computer to localize the robot on the known map by utilizing means provided by ***,the occupancy information is provided to the online grid-based path planner that generates risk-aware *** extensive experimental evaluation of the proposed system is performed in corridors and SubT environments.

关键词： Spot SubT Map-based navigation 3D lidar Autonomy package

A systematic literature review to explore sustainable energy development practices in Mozambique

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Clean Energy 2023年第6期7卷 1330-1343页

作者： samuel Aires Master Lazaro Vanessa Fathia Baba College of Civil Engineering Taiyuan University of TechnologyNo.79 West Street YingzeTaiyuan 030024ShanxiPR China College of Economics&Management Taiyuan University of TechnologyNo.79 West Street YingzeTaiyuan 030024ShanxiPR China

This study thoroughly evaluates sustainable energy practices in Mozambique,identifies suitable activities and suggests future re-search *** authors meticulously detail the research tasks undertaken to achieve the primary objective of the study,including organizing articles by publication year,journal and conference papers;identifying the most frequently cited articles;and recognizing countries that have made significant contributions to the concept of sustainable *** study highlights the most relevant sustainable energy development practices for Mozambique,identifies suitable activities and suggests future research *** rigorous analysis,six significant areas of sustainable energy development were identified,including renewable energy(RE)resources,environmental science,social sciences,computer science,management and accounting,and Earth and planetary *** study used Scopus as the selected multidisciplinary peer-reviewed citation database on 20 February 2023,resulting in 76 *** study has been conducted nationwide for several months and thoroughly investigates various resources such as hydro,wind,solar,biomass and geothermal *** achieves this by evaluating and characterizing the power generation potential of each RE resource and,in addition,identifying and examining numerous projects at the technical and economic feasibility level to promote the potential of projects and the advantages of RE for the sustainable development of *** findings indicate that for sustainable energy development in Mozambique,it is crucial to introduce more policies to support the effectiveness of RE systems while involving the private *** achieve this,measures such as reducing investment risks,guaranteeing investment returns and establishing a transparent regulatory framework are *** steps will attract substantial investments,resolve conflicts and motivate key stakeholders to actively participate in the p

关键词： developing countries Mozambique sustainable development renewable energy systematic literature review Scopus

Improving water use efficiency by integrating fish culture and irrigation in coconut based farming system:A case study in Kasaragod District of Kerala(India)

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International Journal of Agricultural and Biological Engineering 2014年第2期7卷 36-44页

作者： Manoj P.samuel A.C.Mathew National Academy of Agricultural Research Management Hyderabad-500030India Central Plantation Crops Research Institute KasaragodKerala-671124India

The crop production in the district of Kasaragod in Kerala State(India)is characterized by low input-low yield concept and rain-fed agriculture.A field study was conducted in Western Ghat region of the district to develop a suitable rainwater harvesting system adoptable to hilly terrains and to test its efficacy for improving the use efficiency of the harvested water by its multiple *** cost-benefit analysis of the water harvesting system was also carried out to find out its affordability to *** water harvesting system has been developed by integrating three components:(i)improving the productivity of coconut and component crops in the cropping units(ii)developing multiple water use systems,and(iii)the conjunctive use of the harvested water along with other surface and groundwater *** on the estimated annual costs and returns,the Benefit-Cost ratio was found to be 1.69 and all other financial viability criteria(IRR and NPV)were also found favourable for investment on a lined water harvesting tank integrated with a micro-irrigation system and fish *** study suggested that the rainwater harvesting could be implemented as a viable alternative to conventional water supply or on-farm irrigation projects considering the fact that any land anywhere can be used to harvest ***,the water use efficiency can be improved through effective harvesting and subsequent multiple uses of stored water.

关键词： rainwater harvesting water use efficiency plastic lined tank seepage loss fish culture financial viability