Using Biometrics in Evaluating Ritual Gestures in Wearable Device

The article emphasized on the versatility of designing interactions with considerations of wearable technology under the principle of slow technology. It also proposed a new way of evaluating the emoti...     

从“通而不畅”走向“人车分离”

在我国现行居住区规划设计规范中,其道路设计往往强调"通而不畅"之原则。文中指出随着我国居住区建设出现了大规模、高层、高密度并普遍建设着地下空间等特征,这一原则已难以适应于城市化进一步发展之需要。同时提出居住区道路规划应从"通而不畅"走向"人车分离",并在具体设计中遵循以下导则:1在保证居住区基本环境质量的前提下优先采用"人车分离"之通畅路网;2充分利用地下车库进行人车分离;3采取对城市交通体系更友好的形态,使居住区路网规划与市政道路更加通畅地衔接;4多个居住区的地下车库等空间宜互联互通,以提高其利用率。结合我国城市建设出现的新特征,适时调整居住区路网规划原则,对改善城市交通拥堵和居住区的可持续发展都具有重要的现实意义。     

Exploration on Ecological Restoration Model for the Improvement of Ecosystem Services of Yellow River Floodplains —A Case Study of Zhengzhou Yellow River Floodplain Park Planning and Design

The Yellow River Basin is one of the greatest and most important ecological barrier and economic belt in China. When the Yellow River Basin is seen as an ecosystem in whole, the floodplains in the lower reaches are critical to the basin’s health and biodiversity. However, due to the extreme complexity of the natural environment of the floodplains, current flood control policies, long-term agricultural activities, and extensive rural construction and production dikes, the river ecosystem has suffered from considerable damage and a serious decline of ecosystem services. In the planning and design project of the Zhengzhou Yellow River Floodplain Park, the characteristics of the lower, intermediate, and higher floodplains have been carefully identified, site-specific ecological restoration measures for each floodplain type were implemented, highlighting the authenticity and natural qualities and improving the overall ecosystem services. In addition, a slow traffic system and innovative industries along the Yellow River are introduced to enable high-quality cultural perception and recreational experience of the improved ecosystem services, promote green production and lifestyle. These measures help make the Yellow River a river that truly benefit the locals. In the context of ecological protection and high-quality development of the Yellow River, as a national agenda, the ecological restoration planning strategies proposed in this article provides a reference for the development of ecological management and green economy in other sections of the lower reaches of the Yellow River.     

缓释型添加剂对抑制DF4D内燃机车润滑油老化的探讨

本文通过采用在润滑油中加入缓释型抗老化添加剂的办法,从降解润滑油中不溶生成物的角度来抑制DF4D内燃机车柴油机润滑油粘度的增长,达到维持润滑油粘度,减少不正常换油的目的。     

The neural dynamics for hysteresis in visual perception

The hysteresis in the perception has been observed in many perceptual experiments, but little is known about the underlying dynamical mechanism. We simulate a visual discrimination task, as an example of hysteresis in the perception, using a spiking neuron network and the corresponding slow dynamic system. The hysteresis in visual perception has been reproduced in our simulation. We find that hysteresis is influenced by the change speed of the external stimuli and the excitatory recurrent interaction inside the selective neuron pool. The slow dynamic system reveals the dynamical mechanism underlying the hysteresis: emerging from the lag between the response of neural system and the fast change external stimuli when the slow dynamic system has a single steady state; emerging from the multiple steady states regardless of the change speed of the external stimuli. In particularly, the multiplicity of the steady state of the slow dynamic system comes from the codimension three swallowtail catastrophe which exhibits two interacting cusp catastrophes.     

Slow release of a biocidal agent from polymeric microcapsules for preventing biodeterioration

Water-soluble biocides are prone to excessive leaching and high concentrations are therefore required in surface coatings for successful protection of a surface against biodeterioration. Encapsulation prolongs the lifetime of biocides in different matrices by protecting them from leaching and by releasing them slowly. In this study, sodium benzoate as a model water-soluble biocidal agent and Congo Red dye as an capsulation indicator were incorporated into branched polyethyleneimines (PEIs) with molecular weights of 1300 and 5000 g/mol. Microscopic investigations verified that the Congo Red dye and sodium benzoate were entrapped within the capsules. The encapsulation capacity, release behaviour and efficiency of the encapsulated model biocide against two brown rot species Coniophora puteana and Serpula lacrymans were determined. The encapsulated water-soluble model biocide inhibited the growth of the decay fungi. The release of the biocide was based on slow diffusion from the capsules. The molecular weight of the encapsulated agent and the polyethyleneimine affected the release rate.     

负-正相速跳变慢波结构行波管的小信号理论辅助分析

应用Pierce小信号理论,对设计高效率宽带行波管的一般方法进行分析,采用螺距跳变渐变技术,形成了相速减少和相速增加两段结合的输出段作为宽带行波管的慢波结构,并采用散热性能好的半金属化夹持杆慢波结构产生反常色散曲线。为了提高行波管工作频带的电子效率,在高频点(18 GHz),利用遗传算法并调用1维BWIS互作用程序,对相速减少和相速增加两段相结合输出段的慢波结构进行了优化。计算结果表明:行波管在工作频带(6~18 GHz)获得了比较平坦的饱和输出功率,为下一步实际研制宽带行波管提供了理论依据。     

基于LINAC慢正电子源的EGS4模拟

介绍基于ＢＥＰＣ ＬＩＮＡＣ和ＢＦＥＬ ＬＩＮＡＣＥ慢正电子束设备中正电子源部分的Ｍｏｎｔｅ－Ｃａｒｌｏ模拟过程。结果表明,从Ｔａ靶出射的快正电子产额在ＢＥＰＣ ＬＩＮＡＣ和ＢＦＥＬ ＬＩＮＡＣ运行兼容模式时分别为１．８４＊１０＾１０／ｓ和３．９＊１０＾１１／Ｓ。     

数据包时延及控制策略的研究

许多网络应用使用TCP协议,为了能够获得可靠的数据传送服务,作为开发人员除了关心可靠性外,还要考虑拥塞控制的问题,本文中提到的拥塞控制窗口,能够实现数据速率的控制。TCP协议采用慢启动和拥塞避免策略实现端到端的数据传送。