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Reaction Kinetics of Ozonation of Trichloroethylene and Benzene in Gas and Liquid Phases

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Chinese Journal of Chemical Engineering 2000年第3期8卷 272-275页

作者：钟理 Kuo chiang-Hai Department of Chemical Engineering Mississippi State University MS 39762USA

The kinetics of ozonation reactions of trichloroethylene (TCE) and benzene in gas and liquid phases at 101.3 kPa and 298 K was investigated in this paper. The ozonation of TCE is first order with respect to the ozone concentration and one and half order to TCE in the gas phase with the average rate constant 57.30 (mol·L-1)-1.5·s-1, and the TCE ozonation in aqueous medium is first order with respect to both ozone and trichloroethylene with the average rate constant 6.30 (mol·L-1)-1·-1. The ozonation of benzene in the gas phase is first order in ozone but independent of the benzene concentration with the average reaction rate constant 0.0011s-1. The overall kinetics of reaction between ozone and benzene in aqueous solution is found to be first order with one-half order in both ozone and bezene, with the average reaction rate constant 2.67s-1. It is found that the ozonation rate of pallutants is much quicker than that of self-decomposition of ozone in both gas and aqueous phase.

关键词： reaction ozone pollutant trichloroethylene benzene

Rolling route for refining grains of super light Mg-Li alloys containing Sc and Be

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Transactions of Nonferrous Metals Society of China 2010年第8期20卷 1374-1379页

作者： chiang Chih-Te LEE Shyong Department of Mechanical Engineering National Central University

Pioneering work on Sc or/and Be added Mg-Li alloys with refined grains was initiated. Various rolling-based thermo-mechanical treatments on these Mg-Li alloys were carried out. Four Mg-Li alloys were prepared by vacuum melting process. A unique route for producing fine grains was applied which concluded solution treatment at 350 ℃, cold rolling with 60% thickness reduction and 250 ℃ annealing, successively.

关键词： Mg-Li alloy beryllium scandium solid solution strengthening

Utilizing Electronic Reading Device （Kindle） in English as Foreign Language Reading Class

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Sino-US English Teaching 2016年第4期13卷 233-244页

作者： min-Hsun chiang Tunghai University Taichung Taiwan

With the evolutionary change in information and communication technologies （ICT）, the definition of literacy has undergone substantial change to include the skills and strategies required to successfully adapt to the rapidly changing ICT contexts. This new definition presents an urgent need to acknowledge the gap between the types of reading experiences students come across at school and those they regularly practice outside the school. One way to bridge such gap is to expand the reading instruction to incorporate electronic reading device, like Kindle, to engage students in electronic reading. Many e-books feature multimodal functionalities, including audio, video, hyperlinks, and interactive tools. Research on this form of reading is still in its infancy in spite of some positive prospects for fostering literacy development and reading comprehension. Therefore, adopting a mixed method approach with 36 college freshmen in central Taiwan, the current study intended to fill in the void by investigating any difference in readers＇ reading comprehension and reading motivation, between the Kindle group and the print-based group. The results indicate that embedding aspects of technology into a traditional reading instruction boosted the participants＇ motivation to read. Nevertheless, the novelty-driven enthusiasm for electronic reading might not sustain students＇ reading motivation long enough to cultivate long-lasting reading habits. The results indicate that there was no significant difference in reading comprehension between two groups. Implications for utilizing electronic readers in EFL classes are also provided.

关键词： electronic book (e-book) extensive reading EFL reading instruction reading comprehension reading motivation

Impacts of Globalization： Hegemonic Threats of English in Taiwan

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Sino-US English Teaching 2014年第4期11卷 238-247页

作者： min-Hsun chiang lunghai University Taichung laiwan

With the spread of globalization and information technology, the status of English as a lingua franca worldwide is undisputable. Consequently, the impact of globalization on ELT （English language teaching） is phenomenal. In responding to the impact of global competitors and internationalization, English teaching is often regarded as a principal issue in education. English education is treated as a tool to keep up with the rapid globalization of the world economy. Discussing ELT in Taiwan as an example, this paper aims to raise caution among the periphery educators that under the impact of globalization, the imposition of western culture and language via ELT could be potentially hegemonic and harmful to the local culture and language. This paper will be organized into three parts. Firstly, the impact of globalization on the dominance of English will be discussed. Secondly, the potential threats of linguistic hegemony via ELT will be analyzed. Thirdly, proactive solutions to the hegemonic threats of ELT are proposed as the key to ride out the wave of globalization.

关键词： globalization ELT (English language teaching) linguistic hegemony EFL (English as foreign language)

基于YOLOv5和Mask-RCNN组合模型的社交媒体内涝灾害分析

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浙江大学学报（工学版） 2024年第9期58卷 1822-1831页

作者：张凌嘉周欣磊许月萍江衍铭浙江大学建筑工程学院浙江杭州310058

由于缺少淹没实测数据,针对城市市区淹没深度测量数据需求,基于社交媒体与深度学习技术,探索根据社交媒体用户上传信息提取洪水淹没信息的新方法.研发基于YOLOv5与Mask-RCNN组合模型的实例分割算法,制作轿车众多关键部位的识别数据集.... 详细信息

由于缺少淹没实测数据,针对城市市区淹没深度测量数据需求,基于社交媒体与深度学习技术,探索根据社交媒体用户上传信息提取洪水淹没信息的新方法.研发基于YOLOv5与Mask-RCNN组合模型的实例分割算法,制作轿车众多关键部位的识别数据集.根据模型训练结果实现全新的市区淹没事件的淹没高度提取方法.通过输入淹没图像对城市内涝中淹没点位与淹没深度进行预测,与淹没重演模型得到的数据进行比较.基于模拟淹没实验来制作验证数据集,验证该方法的可行性.结果表明,所研发的YOLOv5与Mask-RCNN组合模型的纳什效率系数为0.98.使用郑州市“7·20”城市内涝的实际社交媒体图像进行可靠性验证.结果表明,所提方法能够为城市市区内涝淹没过程提供有效数据来源.

关键词：城市内涝社交媒体 YOLOv5 Mask-RCNN 水深提取图像识别

Sedimentary erosive processes and sediment dispersal in Kaoping submarine canyon

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Science China Earth Sciences 2011年第2期54卷 259-271页

作者： chiang ChengShing YU HoShing Hsiuping Institute of Technology TaichungChina Institute of Oceanography "National"Taiwan UniversityTaipeiChina

The Kaoping submarine canyon, connected to the Kaoping River in the coastal plain in SW Taiwan, continues the dispersal path of modern Kaoping River sediments, from an active small mountainous drain basin to the receiving basin of the South China Sea. Using seismic reflection sections, Chirp sonar profiles, and bathymetric mapping, we reveal characteristic erosive processes responsible for multiple cut-and-fill features, deeply entrenched thalweg, and sediment dispersal that are closely related to turbidity currents in the canyon. The river-canyon connection setting, along with extreme climatic conditions and active tectonism, is favorable for generation of turbidity currents at the canyon head. The upper reach of the Kaoping Canyon is distinguished into three distinct morpho/sedimentary features. The canyon head is characterized by V-shaped axial thalweg erosion. The sinuous segment of the upper reach is dominated by a deeply incised canyon pathway with trough-like morphol- ogy. Relatively small-scaled features of cut-and-fill associated with the dominant incision process are commonly along the canyon floor, resulting in a flat-floored pathway. Sliding and slumping dominated the steep canyon walls, producing and transporting sediments to canyon floor and partially filling up canyon thalweg. The meandering segment is characterized by erosive features where deeply down-cutting occurs in the outer bend of the major sea valley, forming V-shaped entrenched thalweg. The recurrences of turbidity currents have allowed continuous incision of the canyon head and have kept the connec- tion between the canyon head and the river mouth during Holocene highstand of sea level. The upper reach of the Kaoping Canyon is linked to drainage area and maintains as a conduit and/or sink for terrigenous and shallow marine material. Sediment-laden river plume operates in the Kaoping River-Canyon system, with turbidity currents flushing fiver sediments into the canyon head where the canyon t

关键词： entrenched thalweg cut-and-fill sediment dispersal active submarine canyon

Anthropomorphic Design of the Human-Like Walking Robot

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Journal of Bionic Engineering 2013年第2期10卷 186-193页

作者： ming-Hsun chiang Fan-Ren Chang Department of Electric Engineering National Taiwan University Taipei City Taiwan 10617

In this paper, we present a new concept of the mechanical design of a humanoid robot. The goal is to build a humanoid robot utilizing a new structure which is more suitable for human-like walking with the characteristics of the knee stretch, heel-contact, and toe-off. Inspired by human skeleton, we made an anthropomorphic pelvis for the humanoid robot. In comparison with con- ventional humanoid robots, with such the anthropomorphic pelvis, our robot is capable of adjusting the center of gravity of the upper body by the motion of pelvic tilt, thus reducing the required torque at the ankle joint and the velocity variations in hu- man-like walking. With more precise analysis of the foot mechanism, the fixed-length inverted pendulum can be used to describe the dynamics of biped walking, thus preventing redundant works and power consumption in length variable inverted pendulum system. As the result of the new structure we propose, a humanoid robot is able to walk with human-like gait.

关键词： humanoid robot anthropomorphic robot mechanical design human-like walking heel-contact motion toe-off motion

Self-Power Consumption Research with the Thermal Effects and Optical Properties of the HCRI-BIPV Window System

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Journal of Electronic Science and Technology 2012年第1期10卷 29-36页

作者： hsuan-Jui Chen Che-ming chiang Shin-Ku Lee the Green Energy & Environment Research Laboratories Industrial Technology Research InstituteNo.195Sec.4Chung Hsing Rd.ChutungHsinchu 310Chinan the Department of Architecture National Cheng-Kung UniversityTainan 701China the Center for Energy Technology and Strategy National Cheng-Kung UniversityTainan 701China

The building integrated photovoltaics （BIPV） application is one of the main study topics in the sustainable building field. In this paper, the high color rendering index （HCRI）-BIPV window system is developed to be used in the indoor environmental control, whose module material has appeared to be effective in improving the visible transmittance and reducing the absorption. This paper describes the performance of grid-connected HCRI-BIPV window system with 0.75 kWp capacity installed in an office building for a natural ventilation solution. The experimental results indicate that accumulative power generation of the HCRI-BIPV window system is 157.60 WKh during the 7-month experiment period. For consideration of each evaluated factors, the HCRI-BIPV window system not only offers the passive energy situation for its power loading but also improves the indoor thermal environment by natural ventilation.

关键词： Building indegrated photovoltaic high color rendering index natural ventilation sustainable building.

创新与突破:《义务教育信息科技课程标准(2022年版)》的变化特色分析与启示

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开放学习研究 2024年第2期29卷 43-49页

作者：尚晓晶江丰光河南师范大学教育学部河南新乡453007 上海交通大学教育学院上海200240

信息科技的发展不断推动着教育变革,《义务教育信息科技课程标准(2022年版)》首次确立了信息科技课程在义务教育阶段的独立性地位,对我国中小学信息科技教育发展具有划时代意义。本研究在梳理了义务教育阶段信息科技教育的发展历程后,... 详细信息

信息科技的发展不断推动着教育变革,《义务教育信息科技课程标准(2022年版)》首次确立了信息科技课程在义务教育阶段的独立性地位,对我国中小学信息科技教育发展具有划时代意义。本研究在梳理了义务教育阶段信息科技教育的发展历程后,从课程理念、课程目标与内容等方面对新旧课标进行对比分析,进一步明晰了新课标的亮点和突破点。针对分析结果对课程实施提出强化信息科技知、情、意、行相融合的课程取向,深化学生信息科技素养的课程培养目标,灵活设计具有体验性、真实性的跨学科主题内容,从整体性与连续性方面把握学段课程内容衔接等建议,以期为相关研究人员和一线教师提供参考借鉴。

关键词：课程标准信息技术信息科技核心素养