Internet中的页面价值快速算法模型研究

分析了普遍搜索引擎不能为用户提供具有个性化服务的原因,提出了基于页面内容与链接的页面价值快速算法,给出了算法的基本思想及对应的模型,并通过计算以转移概率矩阵为系数方程的特征值得到页面的价值。结果表明,新的模型能够以较少的计算量达到类似TFIDF算法的查全率。     

高性能计算在药物设计中的应用

计算机药物设计是高性能计算应用的一个重要领域。本文针对药物设计领域,简要介绍了高性能计算技术在蛋白质分子动力学模拟、药物虚拟筛选、药靶反向对接、个性化药物设计中的应用。     

Mashup智能答疑系统的研究与实现

在学生进行自主学习的过程中,答疑解惑通常是支持该学习模式的重要手段.为此,以基于网络的探究性学习模式为背景,应用Mashup技术设计一种智能答疑系统.利用该系统集成广域分布的网络资源,实现部分课后习题与思考题的解答、名词解释等功能.将该系统用于某基础课程的教学中,实践结果表明,该系统不仅可大大减轻教师答疑的工作量,而且能及时满足大学生个性化的学习需求,提高其学习效率.     

一种基于网络书签的个性化信息推荐方法

针对目前Internet上信息的爆炸式增长,提出了一种基于Web挖掘的个性化信息推荐方法,介绍了个性化推荐的流程和实现模型,并借鉴复杂网络中的社团结构划分方法,提出了基于网络书签的个性化信息推荐方法,分析了社团内基于协作过滤和社团间基于"信息桥"的个性化信息推荐,并通过实验验证了此方法在个性化信息推荐中是有效的.     

导向标识系统的个性化设计研究

导向标识系统在我们日常生活中是最常见最直观的城市空间元素。标识作为环境信息传达的载体,包含信息传达的有效性,设置的合理性与安全性几方面的内容。个性化设计已经是设计流行的趋势之一,标识系统的个性化即是在设计中注入的情感的、心理的、历史文化的、环境特色和谐的因素,从而使设计在发挥标识作用的同时,能给人带来或轻松愉快或亲切温馨或其他想不到的心理感受和体验。     

WEB数据挖掘技术在高校图书馆工作中的应用

WEB数据挖掘技术是一种新兴的信息处理技术，在信息的利用和提取中发挥着非常重要的作用。本文在论述WEB数据挖掘技术的基础上，探讨了数据挖掘在高校图书馆工作中的应用。     

基于加权弹性网络回归的个性化HRTF方法研究

个性化的头相关传输函数（Head Related Transfer Function, HRTF）对于虚拟听觉技术的实现至关重要。然而在具体的应用过程中，测量每一位受试者的个性化HRTF较为繁琐，为此文章提出一种基于加权弹性网络回归的算法，只需获取受试者的生理参数即可获得HRTF的个性化幅度响应。首先通过数据库中的受试者数据，根据生理参数与幅度的相关性计算获得生理参数的权值，并将权值加入到同时含有1范数和2范数的弹性网络回归中，以此来获取新受试者的生理参数稀疏系数；最后将所得稀疏系数与数据库中的HRTF幅度结合就可以得到新受试者的个性化幅度响应。结果表明，文中方法对于个性化HRTF幅度的合成有较好的效果，尤其是在中低频段内准确度较高。     

Performance of “ductless” personalized ventilation in conjunction with displacement ventilation: Impact of intake height

The importance of the intake positioning height above the floor level on the performance of “ductless” personalized ventilation (“ductless” PV) in conjunction with displacement ventilation (DV) was examined with regard to the quality of inhaled air and of the thermal comfort provided. A typical office room with two workstations positioned one behind the other was arranged in a full-scale room. Each workstation consisted of a table with an installed “ductless” PV system, PC, desk lamp and seated breathing thermal manikin. The “ductless” PV system sucked the clean and cool displacement air supplied over the floor at four different heights, i.e. 2, 5, 10 and 20 cm and transported it direct to the breathing level. Moreover, two displacement airflow rates were used with a supply temperature adjusted in order to maintain an exhaust air temperature of 26 °C. Two pollution sources, namely air exhaled by one of the manikins and passive pollution on the table in front of the same manikin were simulated by constant dosing of tracer gases. The results show that the positioning of a “ductless” PV intake height up to 0.2 m above the floor will not significantly influence the quality of inhaled air and thermal comfort.     

Ceiling mounted personalized ventilation system in hot and humid climate—An energy analysis

This study is to evaluate energy saving potential of ceiling mounted personalized ventilation (PV) system in conjunction with background mixing ventilation compared with mixing ventilation system alone and with mixing ventilation system when occupants are provided with individually controlled desk fans for generating additional air movement at each desk. Control strategy applied includes different number of personalized ventilation air terminal devices used and different PV airflow rates supplied. Energy calculation is based on design conditions in Singapore, representing a hot and humid climate. The results reveal that increasing room temperature can save cooling energy when the combination of PV with ceiling mounted personalized ventilation nozzles and background mixing ventilation is used. In this case the energy for transport of air increases but the total energy decreases, i.e. energy can be saved due to elevated room temperature. Comparing with mixing ventilation plus desk fans, ceiling mounted personalized ventilation cannot only realize better cooling effect but also decrease the total energy consumption.