Enhancing personal communication with spatial haptics: Two scenario-based experiments on gestural interaction

Haptic gestures and sensations through the sense of touch are currently unavailable in remote communication. There are two main reasons for this: good quality haptic technology has not been widely available and knowledge on the use of this technology is limited. To address these challenges, we studied how users would like to, and managed to create spatial haptic information by gesturing. Two separate scenario-based experiments were carried out: an observation study without technological limitations, and a study on gesturing with a functional prototype with haptic actuators. The first study found three different use strategies for the device. The most common gestures were shaking, smoothing and tapping. Multimodality was requested to create the context for the communication and to aid the interpretation of haptic stimuli. The second study showed that users were able to utilize spatiality in haptic messages (e.g., forward–backward gesture for agreement). However, challenges remain in presenting more complex information via remote haptic communication. The results give guidance for communication activities that are usable in spatial haptic communication, and how to make it possible to enable this form of communication in reality.     

Globalisation and local resistance: Alternative city developmental scenarios on capital's global frontier—the case of Yalova,Turkey

Today, defining objectives and setting priorities at local level becomes more and more difficult as the nature and direction of urbanisation is increasingly influenced by global economic integration and the struggle of countries, and indeed, individual cities, to be competitive in the global marketplace (Cohen, 2004). In general, local strategies have to be formed and reformed, based on the logic of macro-level factors as to what is, or is not, feasible, and actors’ responses and political judgments about which values and interests they most wish to promote.     

城市高温灾害的规划应对研究进展

随着全球气候不断升温,城市高温 灾害越来越严重,严重影响城市人居环境。 通过CNKI和Web of Science检索城市高温 灾害相关文献,采用Met a-a na lysis方法和 CiteSpace工具,分析近年来城市规划应对高 温灾害的研究进展。结果发现,城市高温灾 害的规划应对研究起源于城市热岛方面,在 气候变化方面得到发展,最后形成城市高温 灾害的研究。在减缓性策略与适应性策略两 大主题下,主要应对途径是土地利用、空间 结构、道路交通、绿化景观以及建筑等,每种 途径又分为多种具体策略。目前在规划体系、 针对性规划以及效益评估等方面存在明显不 足。在理论上应加强构建规划体系,以及效 益评估系统的研究;在实践中制定应对高温 灾害的规划编制标准,探索气候友好型城市 规划设计方法,为韧性城市建设提供参考。     

岷江上游典型河段水电梯级开发水环境累积影响

岷江上游水能资源丰富,近几十年水电开发程度较大,选取两河口—都江堰段为典型河段,针对该河段10级水电开发的情况,运用幕景分析法进行水环境累积影响评价。研究表明:岷江上游干流两河口—都江堰典型河段水电梯级开发对水环境已经产生了一定的累积影响;在径流量的变化上表现为水量逐年下降,且趋势明显;水量年内分配经水电梯级调节明显发生改变;水质累积影响变化不大,但随着水电规划梯级的建成,有明显恶化的趋势;水温上累积影响较大,可能会对下游鱼类生长、繁殖,浮游植物、动物的生长及分布等产生一定的影响,但对农业灌溉不会产生较大不利影响。     

An Effective Mitigation for Phosphine Present in Ammunition Container Assemblies and in Munitions Containing Red Phosphorus

A major issue associated with munitions containing red phosphorus is that, during storage, red phosphorus can react, in the presence of moisture and air, to form a mixture of corrosive phosphorus acids and the toxic gas phosphine. This has raised serious concerns relating to the health and safety of personnel handling these munitions. This paper details the studies undertaken to assess the suitability of a chemically impregnated activated carbon cloth (phosphine getter material – PGM) for the static adsorption of phosphine evolved from munitions containing red phosphorus and its effective mitigation of phosphine present in both ammunition container assemblies and within the main body of munitions of this type. Laboratory assessment of PGM was undertaken along with real‐life ammunition container assembly trials covering several munitions containing red phosphorus and accelerated ageing trials using modified countermeasure cartridges. Reaction products formed from the reaction of phosphine with chemical impregnates were studied using scanning electron microscopy (SEM) and energy dispersive X‐ray analysis (EDX). Aqueous extraction of the phosphine reacted PGM confirmed the presence of the acidic species orthophosphoric acid (H₃PO₄) and phosphorus acid (H₃PO₃).     

Preliminary research on the design of flexible barriers for debris flow

Rigid barriers, including check dams, steel cells and retaining walls, are widely utilized for debris flow mitigation. It has to be said that these rigid structures are generally effective and technical feasible. However, with the enhancement of environmental awareness and innovative materials, flexible barriers have been being created which are very engineering effective, environmental friendly, material saving as well as easy construction in rugged terrain. Although the merits of such structures are summarized in above, the understanding of such barriers are very limited. Most of constructions are just on the basis of engineering experience and largely depend on the factor of safety to eliminate the uncertainties. In this paper, method for debris flow dynamics calibration and conventional ideas for the design of flexible barriers will be illustrated and an advanced method-finite element will be used to analyze the debris flow.     

基于差分结构的高分辨率多相关器实现技术

多相关器技术被广泛的应用于多径抑制和自主完好性监测等算法中,但采用传统结构实现会带来计算量的显著增长。提出了一种高效的多相关器实现技术,利用伪码差分序列中非零个数远少于采样点数的特点,采用差分结构实现多相关器以减少计算量和硬件规模。研究结果表明,在相关器间隔为1/16码元宽度条件下,其计算量只有传统结构的1/32,硬件规模只有传统结构的1/8。     

A novel approach to enhance outdoor air quality: Pedestrian ventilation system

Higher population density has altered the cities' old landscape with dense areas consisting of high-rise buildings. As a result, detrimental phenomena appeared inside modern cities that threatened the inhabitant's health and comfort. Among these phenomena, the Urban Heat Island (UHI) is known as the most harmful side effect of the urbanization which affects the Outdoor Air Quality (OAQ).     

玉溪红塔地块地基处理与效果检验

为了解某地基稳定性及地基的承载能力，对场地地基土层、地质岩性等结合不同作业点之间的联系与区别作了深入对比分析，通过方案比选，选择强夯法作为其最终的地基处理方法，采用规范填料对地基夯实加固有明显的效果，建议填料应严格按照设计要求选用且合理地增加触探作业点。     

Dietary high protein and vitamin C mitigates endosulfan toxicity in the spotted murrel, Channa punctatus (Bloch, 1793)

The amelioration effect of dietary high protein and vitamin C against stress was evaluated in spotted murrel, Channa punctatus, exposed to endosulfan. Two hundred and forty fish (average weight: 27.01 g/fish), distributed equally into 4 different groups (control, T₁, T₂, and T₃), each with 6 replicates were fed with control (40% crude protein, CP and 0.1% vitamin C), T₁ (40% CP and 0.1% vitamin C), T₂ (50% CP and 0.1% vitamin C), and T₃ (50% CP and 0.2% vitamin C) diets for 90 days. Groups fed T₁, T₂, and T₃ diets were exposed to sublethal endosulfan concentration, whereas the control was maintained without endosulfan exposure. Results indicated significant reduction in the growth performance, survival, and activities of lactate dehydrogenase (liver and muscle), malate dehydrogenase (liver and muscle), enzymes of protein metabolism (aspartate amino transferase in liver and alanine amino transferase in liver and muscle), acetyl choline esterase (brain), alkaline phosphatase activity (liver), and ATPase (gill) enzymes of group fed control diet and exposed to endosulfan. However, endosulfan exposed fish fed high CP and vitamin C diet exhibited significant (P < 0.05) improvement in their growth performance and metabolic enzyme activities. Further, high CP and vitamin C diet reduced endosulfan accumulation in the muscle. Overall results indicate that vitamin C (0.2%) supplementation in high CP (50%) diet improves growth, metabolism, and reduce endosulfan bioaccumulation in C. punctatus.