前后端分离的校园闲置物品交易平台开发

大学生的日常生活中常囤积着许多闲置物品。为了提高闲置物品利用率,本文设计了校园闲置物品交易平台。该平台应用前后端分离技术,前端使用Vue.js,后端使用springboot框架,由此保证了交易的安全与便捷性。平台实现了面对面交货、在高校所在的大学城区域交易、用户聊天、短信认证、后台管理等功能。     

校园闲置物品交换平台的设计与实现

目前,勤俭节约成为人人推崇的社会风尚,大学生,作为青年中的佼佼者,具有优势的特殊群体,更应积极响应.在校园中实现闲置物品交换,能够让校园资源得到更充分的利用,有利于大学生节约资源,培养节约意识和环保意识.该平台基于B/S结构,采用ASP、SQL？SERVER数据库,实现校园闲置物品交换平台的设计与实现.     

校园闲置物品捐赠和销售平台设计

提出了一项针对同一所大学学生的在线校园闲置物品交易平台。该平台运用互联网技术,实现了学生之间闲置物品的便捷发布、浏览和交易。前端技术采用微信小程序和Uniapp框架,后端技术包括PHP编程语言、ThinkPHP5框架以及MySQL数据库。其旨在促进学生自由交换不再需要的物品,既满足学生需求,又有助于提高闲置物品的可持续循环利用。     

“萤火闲置”公益网站设计与开发

在校大学生闲置物品冗杂,校内公益社团对闲置物品回收方式单一,仅停留在活动宣传及地毯式的走寝回收,对校内资源的浪费比较严重。同时在校园内缺少相对完善的公益信息平台,学生们难以获知更多公益资讯,导致校园公益社团时常有缺少志愿者,而志愿者又无法及时参与公益活动,所以"萤火闲置"平台应运而生。该平台主要包括:"我要捐"(求助)、"萤火互换"、"萤火公益"、"校园公益"等功能板块。     

基于WEB应用的校园交易平台的设计

针对高校内闲置物品越来越多的现象,一方面大量学习用品和生活用品闲置,另一方面,学生想买一些物美价廉的二手物品.系统从可行性分析,分别从总体架构和详细设计方面进行设计.通过校园交易平台,学生可以出售自己的闲置物品,并购买二手商品,降低消费成本,节约资源.     

基于QQ小程序和Flask的高校闲置物品信息平台

高校学生之间的闲置物品交易是大学课外生活的一大主要活动.由于校内当面交易方便、所交易物品重复利用率高、价格便宜、节约环保等原因,校园内的闲置物品交易受到大学生的青睐.传统方式下,校园内的闲置物品信息发布通过校内“跳蚤市场”QQ群实现,这种方式无安全保证、无法整合信息,且群内信息容易被忽略.为了带来更好的闲置物品交易用户体验,该平台基于QQ小程序搭建闲置物品信息平台前端、Flask+MySQL框架搭建平台后端,完整实现了闲置物品信息平台的各类功能,其特色功能包括：商品多维分类、商品推荐、留言提醒、降价提醒、一键添加好友等.平台通过HTTPS及RESTful API实现了前后端的加密交互,并且引入了在校身份认证的功能,在完美契合各项功能需求的同时,保证了校园闲置物品交易的安全.     

校园闲置物品互换网的设计与开发

目前,在校大学生的生活和学习用品丰富,更新速度极快,导致大量的闲置物品被搁置而无法被利用。"不差钱校园闲置物品互换公益网"针对这一现象,为在校师生提供了一个旧物交换的平台,本网站采用五层构架设计模式,采用ASP.NET、SQL server数据库技术,实现了用户管理、物品管理、留言管理等功能,便于师生来处理自己闲置物品,既方便又环保。     

基于Android的校园交易平台的研究

笔者对校园二手交易平台的物品上架、物品信息更改和物品购买等流程进行了可行性分析后,对该项目进行了需求分析、功能划分、数据库设计和界面设计,并完成了校园二手交易系统的开发。本系统主要采用Java语言开发,并结合灵活的Oracle数据库,实现在线交易闲置物品,为在校人员提供一个完全开放的二手交易平台,同时,也在一定程度上方便了学生间的相互交流。     

校内购微信小程序的设计与开发

作为社会上一个特殊群体,高校大学生具有自己独特的思维方式,思想观念比较超前,因此,对于社会上很多新鲜事物都会保持着较高的兴趣和好奇心,所以他们往往会由于冲动消费而产生大量的闲置物品,如何处理这些闲置物品成为多数大学生共有的困扰。随着智能手机的普及和微信小程序功能的不断完善,微信小程序已成为人们日常生活中不可或缺的应用程序。通过对校园内二手闲置物品交易市场进行调研和分析,设计开发了一款校园内二手闲置物品交易微信小程序。该微信小程序可快速实现在手机端对二手闲置物品进行信息发布、在线购买、交易管理等操作,具有良好的用户体验和实用性。     

高校校园拍卖系统设计与实现

高校学生拥有大量的闲置的物品,却缺乏合适的交易平台。本文提出建立一个二手物品拍卖系统,有效地帮助学生解决闲置物品的处理问题。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

Call for Papers The 6^th International Conference on Grid and Cooperative Computing

Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.     

The Distributed Time-Triggered Simulation Scheme: Core Principles and Supporting Execution Engine

Distributed real-time simulation is a young technology field but its practice is under increasing demands. In recent years the author and his collaborators have been establishing a new approach called the distributed time-triggered simulation (DTS) scheme which is conceptually simple and easy to use but widely applicable. The concept was initiated in the course of developing a new-generation object-oriented real-time programming scheme called the time-triggered message-triggered object (TMO) programming scheme. Some fundamental issues inherent in distributed real-time simulation that were learned during recent experimental studies are discussed along with some approaches for resolving the issues. An execution engine developed to support both the TMOs engaged in control computation and the TMOs engaged in DTS is also discussed along with its possible extensions that will enable significantly larger-scale DTSs.     

Software-Konfigurationsmanagement in großen Softwareprojekten

Zusammenfassung Mit zunehmender Größe der Softwaresysteme verschärfen sich die für die Software-Herstellung typischen Probleme: Beherrschen großer Objektmengen, Erhalten der Systemkonsistenz, Kontrolle der ständigen Änderungseinflüsse und Gewährleisten einer langen Lebensdauer. Die Disziplin Konfigurationsmanagement bildet den methodischen Ansatz, diese Probleme besser zu beherrschen. Software-Konfigurationsmanagement faßt die Herstellung von Softwaresystemen als eine Abfolge von kontrollierten Änderungen an gesicherten Zwischen- und Endergebnissen auf. Dargestellt werden die Objekte und Funktionen des Software-Konfigurationsmanagements sowie die hierfür in großen Software-Projekten benötigten Methoden, Instanzen und Hilfsmittel.     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and     

Editorial:Brain-machine interface(BMI) and cyborg intelligence

正Brain-machine interfaces(BMIs)aim at building a direct communication pathway between the brain and an external device,and represent an area of research where significant progress has been made during the past decade.Based on BMIs,mind information can be read out by neural signals to control     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate     

SCIENCE CHINA Information Sciences SUBJECT INDEX TO VOLUME 57(2014)

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