基于MAX+PLUSII模块化设计的智力竞赛抢答器

设计了一款造价低,体积小,操作简单,适用性广的抢答器。该抢答器是基于MAX+PLUSII软件,在FPGA芯片上设计的,可实现多人智力竞赛抢答。     

Effectiveness of MMORPG‐based instruction in elementary English education in Korea

This study investigated the effectiveness of massive multiplayer online role‐playing game (MMORPG)‐based (massive multiplayer online role‐playing game) instruction in elementary English education. The effectiveness of the MMORPG program was compared with face‐to‐face instruction and the independent variables (gender, prior knowledge, motivation for learning, self‐directed learning skills, computer skills, game skills, computer capacity, network speed, and computer accessibility) were examined to see how accurately achievement was predicted in MMORPG instruction. The results indicated that students studying English utilizing online role‐playing games showed higher scores in areas of listening, reading, and writing than those who attended face‐to‐face instruction classes. It was also found that prior knowledge, motivation for learning, and network speed were factors affecting achievement in English learning. These findings suggest that MMORPGs can play an important role in improving English communicative skills.     

带种族遗传算法的神经网络辨识器及其应用

为了解决油田动态系统建立数字模型难和模型训练难的问题,以多层动态前向网络为模型框架,给出了一种新的油田系统神经网络辩识器,它对上述系统具有通用性。为了训练该辩识器和避免极值问题,模拟生物种族进化机制,设计了新的种族遗传算法。该算法是由改进的带共享机制的遗传算法、启发式山峰聚类算法和新的Powell算法有机结合构成的新型混合算法。应用表明,种族遗传算法具有极强的全局和局部搜索能力,这确保了上述神经网络辩识器具有很高的预测精度,平均相对误差在1%以内。     

基于增强现实的多层次协同可视化系统

传统交互设备的信息展示维度存在一定局限性,增强现实技术能够扩展交互空间和信息维度,但在信息的全局交互和决策中则略显不足.该文将传统移动交互设备iPad与增强现实设备HoloLens进行结合,在iPad上展示整体的特征信息的同时,在HoloLens中进行细节的探索.基于这一设计思想创设了一种全新的交互环境,实现多层次多人...     

Construction of covalently attached enzyme multilayer films based on the photoreaction of diazo-resins and glucose oxidase

A novel and facile approach to construct multilayered glucose oxidase (GOx) films on the surface of quartz or CaF₂ slides as well as gold electrodes for use as biosensing interfaces is described. Diazo-resins (DAR) as polycation and glucose oxidase as polyanion were alternately deposited into a multilayer structure using layer-by-layer self-assembly technique based on electrostatic interaction as driving force. Upon near UV irradiation, the adjacent interfaces of the multilayer reacted to form a crosslinking structure which greatly improved the stability of the enzyme films. These changes was monitored and confirmed by UV-vis and IR spectroscopy. Ellipsometric measurements reveal that the enzymes formed sub-molecule layers, and the thickness of the film shows a linear relationship with the number of assembled layers, demonstrating a spatially well-ordered manner in multilayer structure. The covalently attached enzyme multilayer film has a highly permeable structure, and can be used as biosensing interface. Electrochemical and analytical behavior of the enzyme electrodes was studied by cyclic voltammetry (CV) in the presence or absence of glucose. The sensitivity of the enzyme-modified electrodes was estimated through the analysis of voltammetric signals, which can be fine turned to the desired level by adjusting the number of attached bilayers.     

浅谈多层砌体结构房屋的抗震设计

综述了地震震级、烈度和抗震设防目标,分析了工程结构破坏的主要情形和多层砌体结构的抗震设计要点,以提高房屋的抗震能力,减少建筑物由于地震而造成的破坏。     

同类防空武器多层防御部署分析

以排队论为基础，建立了同类防空武器多层防御的射击效能的计算模型．通过计算仿真，推测出同类防空武器的部署规律，并加以证明．最后建立了需求分析模型，通过运用部署规律进行求解，给出了求解的基本步骤．     

一种适合P2P MMOG的动态负载均衡算法*

P2P MMOG中常采用多台服务器集群的结构来处理玩家的请求,但是,玩家在游戏中的走动、打斗常常使某些服务器超载,因此网络游戏系统应该具有一定的负载均衡能力,即能以较高的性能动态地将负载从超载节点迁移到轻载节点中。提出了一种在游戏动态运行过程中与系统空闲时的一种动态负载均衡算法。实验表明,该算法能够有效地均衡负载和提高系统性能。     

TCP/IP协议在多人网络游戏中的应用研究

多人网络游戏中协议是很重要的保证,通过对网络协议的比较发现:TCP协议能够保证数据包的完整、有序地传送,但传送数据包的速度比较慢;而UDP传送数据包的速度远远快于TCP协议,但是不保证数据包的传送和有序。为此,文中讨论了选择TCP/IP的理由,以及为克服TCP协议传送速度慢而采取的一些方法,诸如用W insock函数族来开发客户端,采用更高效的重叠I/O模型;并在服务器端做详细的设置,比如对服务器的网络连接做设置,对消息做设置,特别阐述了使用服务器广播技术,把游戏地图分成九块广播出去,并采用二维矩阵碰撞检测的方法,把相交块的坐标转换成内部坐标,然后进行运算,算出块之间的相对位置,并着重给出了同步问题的解决方案,最后阐述了综合同步法的设计思路;文中还根据论述内容画出了关于"客户端非重要消息的处理流程"图和"客户端重要消息的处理流程"图,使读者一目了然。     

Establishment of the Comprehensive Evaluation System of Cold Stamping Die Quality

A comprehensive evaluation system of die quality, a multiplayer hierarchical amendment index system according to the characteristics of cold stamping die production, an evaluation standard referring to the technique and design rules of dies, and a scientific evaluation by using the multiplayer hierarchical and the fuzzy comprehensive evaluation methods are presented in this paper. The applications show that the system can be used to evaluate the die quality objectively, fairly, and reasonably. Translated from Journal of South China University of Technology (Natural Science Edition), 2004, 32(3)