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International Journal of Modeling, Simulation, and Scientific Computing 2021年第5期12卷 118-142页

作者： Abhijit Barman rubi das Pijus Kanti De Department of Mathematics National Institute of Technology Silchar Silchar Assam 788010India

In a wholesale shop,the retailer is required to keep an inventory of various ranges of a product due to uncertainty in consumer preferences and *** Economic Order Quantity(EOQ)models for each variety of a product are needed for optimum level of *** model decides how much stock a shopkeeper has to store,according to demand and deterioration of different items to optimize the inventory policy of multiple *** like fashion,food,vegetables,pharmaceuticals,etc.,deteriorate in the retailer’s warehouse during *** investment is required in preservation technology to significantly reduce the deterioration rate,reduce economic losses,and increase business ***,a multi-item deteriorating EOQ model with a fixed cycle duration has been developed incorporating the preservation *** demands for the items are a quadratic function of the selling price,and shortages are *** main objective is to determine the optimal selling price,investment under preservation,the time length up to zero inventory,order quantity of the proposed inventory model such that the overall profit will be ***,we prove that the optimal selling price and investment in preservation exist and are ***,the total profit per unit time is a concave function of selling price and preservation technology *** algorithm is designed to obtain the optimum joint policy.A numerical example has been given to illustrate the model,and sensitivity analysis is conducted,which gives some managerial insights.

关键词： Multi-item inventory deterioration preservation technology shortages quadratic demand

Pricing and ordering strategies in a two-echelon supply chain under price discount policy:a Stackelberg game approach

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Journal of Management Analytics 2021年第4期8卷 646-672页

作者： rubi das Pijus Kanti De Abhijit Barman Department of Mathematics National Institute of Technology SilcharSilcharAssamIndia

Supply chain management coordinates different strategies for the production *** manufacturer requires some incentive schemes to motivate the retailer to change his policy,optimal for the whole *** paper suggests a discount mechanism by which companies can coordinate their ordering and pricing strategies throughout a supply chain model with a single manufacturer and single ***,the demand curve is iso-elastic price *** members have decided their selling price and order quantity jointly and independently to maximize the supply chain profit.A coordination mechanism is proposed based on quantity discounts to correlate pricing and ordering strategies *** decentralized case is analyzed under the manufacturer-Stackelberg game *** result of numerical investigation shows that the suggested discount mechanism has improved the supply chain profit as well as each channel member’s profit in comparison with the centralized and decentralized decisions without discount.

关键词： centralized supply chain decentralized supply chain discount pricing Stackelberg game iso-elastic price sensitive demand

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五十九度灰

钟山 2024年第2期 21-59页

作者：秦汝璧江苏省作协高邮市作家协会

冬天正午的阳光透过莹澈的玻璃,照亮整个房间。四十九度的灰揉进一度暖阳里,没有倾向性的灰色却带来了宁静、温柔、轻盈,这是一片纯洁的空间,整颗心都得以沉淀、纯粹。——改编自设计师XIN一在本月13号那天,我收到一则快递到达的短讯。... 详细信息

冬天正午的阳光透过莹澈的玻璃,照亮整个房间。四十九度的灰揉进一度暖阳里,没有倾向性的灰色却带来了宁静、温柔、轻盈,这是一片纯洁的空间,整颗心都得以沉淀、纯粹。——改编自设计师XIN一在本月13号那天,我收到一则快递到达的短讯。我潦草地扫了一眼,因为不确定是否能够被允许下楼。当我每次下定决心想要闯出单元楼大门时,就总先能透过窗户看见对面一件不知从哪里来的白色大褂被筒在竹竿中随风动,很像一个人挂在那里,一直紧盯住这栋楼的每扇窗户。“下去我也是被他们弄回来。”我自己跟自己说。

关键词：窗户快递单元楼

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35kV充气柜电压互感器烧损因素分析

电工技术 2024年第S1期 293-295,298页

作者：李如壁许继德理施尔电气有限公司河南许昌461000

随着我国社会经济的发展,科技技术和新材料不断更新,电力系统装备也得到了新的体现。作为电力系统的重要组成部分,电压互感器对于我国电力事业的可持续发展至关重要。在选择电压互感器类型时,必须了解其特点,并根据实际需求进行合理选... 详细信息

随着我国社会经济的发展,科技技术和新材料不断更新,电力系统装备也得到了新的体现。作为电力系统的重要组成部分,电压互感器对于我国电力事业的可持续发展至关重要。在选择电压互感器类型时,必须了解其特点,并根据实际需求进行合理选择。目前,35kV充气柜广泛应用,但同时也面临一些问题。在35kV变电站的运行中,由于周围环境条件的影响,导致电压互感器故障频发,严重影响了35kV变电站的运行效果。为此,就电力系统装备35kV充气柜电压互感器烧损因素展开论述,供参考。

关键词：电力系统装备 35kV充气柜电压互感器烧损因素分析

面向船舶与海洋能量采集的多层摩擦纳米发电机研究

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面向船舶与海洋能量采集的多层摩擦纳米发电机研究

作者： rubi Lorena Aranda Quintero 大连海事大学

学位级别：硕士

Triboelectric nanogenerators are one of the most recent ways of harvesting mechanical energy from the environment to generate electrical *** a high level of sensitivity to mechanical stimuli,it is a low-cost technology,simple structure,lightweight,with a diversity of materials,adaptability,and *** that reason,two new applications of triboelectric nanogenerators in the field of ships and oceans are proposed in this ***,a Multilayer Triboelectric Nanogenerator(M-TENG)is proposed to harvest the energy of water waves found on board ships to power the level sensor of Anti-heeling ***,an Oscillating Triboelectric Nanogenerator(O-TENG)is proposed to harvest mechanical energy from the tail movement of marine mammals and power marine environment monitoring *** results of the M-TENG are obtained through COMSOL Multiphysics simulations,where it is shown that the M-TENG with more layers offers better electrical performance.A maximum theoretical power of 1.63 W is calculated for a six-layer M-TENG,demonstrating its feasibility in powering shipboard ***,the structural design for the energy harvesting device to power the Anti-heeling Tanks level sensor is *** results of the O-TENG are obtained through experimentation by constructing the O-TENG device and the experimental test *** studies are performed to observe the electrical performance for different structural parameters and motion *** results indicate that the best electrical performance is obtained by using FEP as friction material and copper as electrode material,since the results are more stable for different motion amplitudes and *** is found that both the voltage and current delivered by the O-TENG increase for higher amplitudes and frequencies of *** is also shown that the integration of several O-TENG devices in parallel offer higher current and power outputs,obtaining up to 1.21 ?A and 17.78 ?W for 10O-TENGs units.

关键词： Multilayer Triboelectric Nanogenerator Triboelectric Nanogenerator FEM Simulation Marine Applications

16-23S rRNA Spacer Region Polymorphism in Gangetic River Water Isolates of Salmonella

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Journal of Water Resource and Protection 2010年第8期2卷 756-761页

作者： rubi Singh Mumtesh Kumar Saxena 不详

Salmonella is one of the major pathogenic bacteria present in contaminated water. 16-23S rRNA spacer region has been reported to be polymorphic at serovar level in Salmonella. Salmonella isolates obtained from Ganges river water were studied for 16-23S rRNA spacer region polymorphism. Thirty three isolates belonging to eight serovars (S. Typhimurium, S. Abuja, S. Pantypridd, S. Lagos, S. Chinkual, S. Zwickau, S. Goldenberg and S. Oritamerin) were studied for the polymorphism. Out of 33 isolates, 15 different profiles were observed no serovar specific profile. Our findings indicate that 16-23S rRNA spacer region is not specific at serovar level, but can be used for differentiation of different Salmonella isolates.

关键词： Ganges River Salmonella Spacer Region Polymorphism 16-23s rRNA

Using modular 3D digital earth applications based on point clouds for the study of complex sites

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International Journal of Digital Earth 2016年第12期9卷 1135-1152页

作者： Oscar Martinez-rubi Maurice de Kleijn Stefan Verhoeven Niels Drost Jisk Attema Maarten van Meersbergen Rob van Nieuwpoort Rens de Hond Eduardo Dias Pjotr Svetachov Netherlands eScience Center AmsterdamThe Netherlands Spatial Information laboratory(SPINlab) VU University AmsterdamAmsterdamThe Netherlands Faculty of Arts Institute for HistoricalLiterary and Cultural studies(HLCS)Radboud UniversityNijmegenThe Netherlands Geodan b.v. AmsterdamThe Netherlands Donald Smits Center for Information Technology University of GroningenGroningenThe Netherlands

This article discusses the use of 3D technologies in digital earth applications(DEAs)to study complex *** are large areas containing objects with heterogeneous shapes and semantic *** study proposes that DEAs should be modular,have multi-tier architectures,and be developed as Free and Open Source Software if *** DEAs requiring high reliability in the 3D measurements,point clouds are proposed as basis for the 3D Digital digital earth *** the development of DEAs,we propose to follow a workflow with four components:data acquisition and processing,data management,data analysis and data *** every component,technological challenges of using 3D technologies are identified and solutions applied for a case study are *** case study is a modular 3D DEA developed for the archaeological project Mapping the Via *** 3D DEA allows archaeologists to virtually analyze a complex study area.

关键词： 3D digital earth application point clouds data management visualization

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后遗症

钟山 2022年第2期 38-58页

作者：秦汝璧不详

幸福家庭北半球仲夏午后的阳光像往常一样随处可见,其中有一处也如常照破住在老街口拐角的乔淼之房间的窗户。窗户内,乔淼之的母亲许爱娣躺在一块临时搭就的木板床上,一条碎花雪纺裤子垂在床边,她翻了个身,脸便搁在裤裆上。爱娣这个时... 详细信息

幸福家庭北半球仲夏午后的阳光像往常一样随处可见,其中有一处也如常照破住在老街口拐角的乔淼之房间的窗户。窗户内,乔淼之的母亲许爱娣躺在一块临时搭就的木板床上,一条碎花雪纺裤子垂在床边,她翻了个身,脸便搁在裤裆上。爱娣这个时候必要睡午觉。她被吵醒后会欠身骂骂咧咧。于是,乔淼之就站在窗外看蚂蚁。

关键词：幸福家庭窗户后遗症

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漩涡

钟山 2023年第3期 58-75页

作者：秦汝璧中国作家协会江苏省文学院

灯怎么没开“灯怎么没开?!”一大家子围坐在桌前已经吃了好一会儿晚饭,直到铁妮的弟弟铁男发现桌子上的菜灰蒙蒙的,搛来搛去,搛不到瘦肉,却吃到一块姜,惊讶地叫出声来。铁妮挪开凳子转身去开灯。灯一开,铁妮的眼睛往下一沉。她努力地往... 详细信息

灯怎么没开“灯怎么没开?!”一大家子围坐在桌前已经吃了好一会儿晚饭,直到铁妮的弟弟铁男发现桌子上的菜灰蒙蒙的,搛来搛去,搛不到瘦肉,却吃到一块姜,惊讶地叫出声来。铁妮挪开凳子转身去开灯。灯一开,铁妮的眼睛往下一沉。她努力地往上睁睁,眼前的明亮也会让她感到吃惊。灯开之前,她一直在想下班时候的事。

关键词：漩涡转身出声

梅彩德斯—苯茨的新型载重汽车柴油机OM441 OM442 OM441LA OM442A OM442LA

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车用发动机 1989年第3期 11-16页

作者： Arthur Mischke Volker rubi 牛宏才联邦德国

戴姆勒—苯茨公司从1985年开始批量生产OM442A(260kW)和OM442LA(320kW)柴油机之后,现又推出了功率为160～350kW的400系列载重汽车柴油机。该系列的结构型式为V型6缸和V型8缸,在燃烧和结构方面做了进一步的改进,其特点是应用在载重汽车上... 详细信息

戴姆勒—苯茨公司从1985年开始批量生产OM442A(260kW)和OM442LA(320kW)柴油机之后,现又推出了功率为160～350kW的400系列载重汽车柴油机。该系列的结构型式为V型6缸和V型8缸,在燃烧和结构方面做了进一步的改进,其特点是应用在载重汽车上的V型6缸直喷式柴油机各缸具有相同的着火间隔。

关键词：柴油机载生汽车