Using physical memorabilia as opportunities to move into collocated digital photo-sharing

The uptake of digital photos vs. print photos has altered the practice of photo-sharing. Print photos are easy to share within the home, but much harder to share outside of it. The opposite is true of digital photos. People easily share digital photos outside the home, e.g., to family and friends by e-mail gift-giving, and to social networks and the broader public by web publishing. Yet within the home, collocated digital photo-sharing is harder, primarily because digital photos are typically stored on personal accounts in desktop computers located in home offices. This leads to several consequences. (1) The invisibility of digital photos implies few opportunities for serendipitous photo-sharing. (2) Access control and navigation issues inhibit family members from retrieving photo collections. (3) Photo viewing is compromised as digital photos are displayed on small screens in an uncomfortable viewing setting.To mitigate some of these difficulties, we explore how physical memorabilia collected by family members can create opportunities that encourage social and collocated digital photo-sharing. First, we studied (via contextual interviews with 20 households) how families currently practice photo-sharing and how they keep memorabilia. We identified classes of memorabilia that can serve as memory triggers to family events, trips, and times when people took photos. Second, we designed Souvenirs, a photo-viewing system that exploits memorabilia as a social instrument. Using Souvenirs, a family member can meaningfully associate physical memorabilia with particular photo-sets. Later, any family member can begin their story-telling with others through the physical memento, and then enrich the story by displaying its associated photos simply by moving the memento close to the home's large-format television screen. Third, we re-examined our design premises by evoking household reactions to an early version of Souvenirs. Based on these interviews, we redesigned Souvenirs to better reflect the preferences and real practices of photo and memorabilia use in the home.     

Empirical evaluation of an educational game on software measurement

Software measurement is considered important in improving the software process. However, teaching software measurement remains a challenging issue. Although, games and simulations are regarded powerful tools for learning, their learning effectiveness is not rigorously established. This paper describes the results of an explorative study to investigate the learning effectiveness of a game prototype on software measurement in order to make an initial judgment about its potential as an educational tool as well as to analyze its appropriateness, engagement and strengths & weaknesses as guidance for further evolution. Within the study, a series of experiments was conducted in parallel in three master courses in Brazil. Results of the study reveal that the participants consider the content and structure of the game appropriate, but no indication for a significant difference on learning effectiveness could be shown.

组态软件在干燥实验装置上的应用

本文介绍了MCGS组态软件在干燥实验装置中的开发与应用,阐述了实验台的原理、结构与功能。实验台主要由工控组态软件、计算机、数据采集卡、相应传感器件构成的数据采集与监控系统及干燥装置组成,设计结构紧凑,使用灵活,操作界面友好,经投入使用效果良好。     

航天系统仿真试验框架与集成环境设计

航天系统分析论证迫切需要自动化权衡分析能力的支持.提出一种具有较高效率和可靠性的航天系统仿真试验框架与集成环境IEEASS.IEEASS采用基于CORBA的分布式组件体系结构和插件式设计,基于CORBA和XML实现多种通信机制,集成多种权衡分析、数据探索及数据可视化功能,采用内、外双层软件包装器结构,提供具有良好适应性和扩展性的软件包装规范.利用IEEASS可有效包装各种航天系统仿真软件,自动实施多种权衡分析,快速获得有价值的可靠结论.     

外语类院校《操作系统》课程设置及教学探索

由于学生的生源特征、知识背景和所处大环境的不同,外语类学校中<操作系统>的教学并非易事,是专业教学中的难点.为了能够让学生掌握操作系统的有关知识,应正视与理工院校存在的差异和距离,在课程设王、教学方法教学组织、实践环节等方面进行了探索,取得了一定效果.     

An admittance based hierarchical control framework for dual-arm cobots

Dual-arm robotic platforms have solid arguments to match the growing need for versatility in the industry. Coupling the control of two manipulators for cooperative purposes enlarges the scope of feasible operations, while adding perception capabilities allows to navigate in dynamic environments. In this respect, we propose a complete online kinematic control framework for dual-arm robots operating in unstructured industrial settings. We base our approach on admittance control in the cooperative task space. Regulating internal and external efforts offer safe bimanual task execution and enables physical interaction. We implement a hierarchical quadratic programming architecture that applies a prioritization of tasks: most efforts are concentrated on the proper tracking of relative motions of the arms, which is the most critical for safety reasons. We demonstrate the performance of our framework through a “teaching-by-demonstration” experiment on the dual-arm mobile cobot BAZAR.     

电磁学实验预习系统的开发

本文通过对ＣＡＩ电磁学实验预习系统的具体开发过程的介绍,在分析其可行性与优越性的基础上,对如何进行此项工作进行初步探讨。     

基于单片机的CAN_NODE的设计与实现

CAN_NODE实验板是一款功能强大的8位AVR单片机实验板,采用的是基于AVR RISC结构的8位低功耗CMOS微处理器ATmega128。由于其先进的指令集以及单周期指令执行时间,ATmega128的数据吞吐率高达1 MIPS/MHz。板上提供了CAN总线通讯所需要的硬件,按键,LED,USB接口等常用的功能部件,为系统扩展而预留了扩展功能接口,提供了SPI接口和JTAG接口以方便下载和调试。     

音体美专业学生计算机教学策略研究

音体美专业学生的计算机课程教学,是困扰教师教学的难题。本文通过对该类专业学生教学过程和实验设计的探讨,从多个角度介绍解决这些困扰的方法和策略,试图运用这些手段,克服教学中的困难和阻碍,以达到较理想的教学目标。     

Coordination of split deliveries in one-warehouse multi-retailer distribution systems

In this paper, we consider a distribution system where a warehouse is responsible for replenishing the inventories at multiple retailers by a fleet of vehicles of limited capacity. If a distribution policy of the system involves split deliveries, that is, the inventory of at least one retailer is replenished by using multiple vehicle routes, the coordination of the deliveries can further reduce the inventory cost of the retailer. We consider the coordination where two split deliveries are realized by direct shipping and multiple-stop shipping, respectively. To the best of our knowledge, this kind of coordination was never studied in the literature but can find its application in inventory routing problems. This paper proposes and analyses a class of coordination policies for the split deliveries which can reduce the inventory costs of the retailers without increasing transportation costs. A non-linear programming model is established for formulating the class of polices. Because the optimal coordination policy corresponding to an optimal solution of the model may be hard to find and/or implement, two simple but effective coordination policies are proposed. The inventory cost savings realized by the two policies are evaluated analytically and algorithmically. Our theoretical analysis and computational experiments show that both policies are effective. Under certain conditions, they can save 50% of the inventory costs at the retailers without increasing transportation costs.