Comparison of the simulated and LIDAR measured atmospheric density and temperature in transitional flow regime

The understanding of the atmosphere in the transitional flow regime is quite limited,due to the limited accuracy of measurement data.In the proposed paper,the atmospheric density and temperature at around 100 km altitude are analyzed,by using numerical simulation,empirical model,satellite data an..

單線鐵路順序發車系統

[[abstract]]近年來政府交通政策開始轉向人本交通，公共運輸系統與人行道的設置成了眾人矚目的焦點，而政府也設置新型態的大眾交通工具希望能增加民眾搭乘公共運輸系統的意願，而部分觀光區域則是使用鐵道系統作為遊客接駁與轉乘的大眾運輸工具（如故宮南院、阿里山遊樂區）。 但是軌道運輸系統除了系統本身造價較高外，還有著候車與轉乘的問題，尤其候車的時間與車輛的班次間距息息相關，而目前大多軌道系統增加班次的方法多為雙線化設計已讓複線區間容納較多的車輛，但雙線化為了鋪設軌道的空間與車輛的淨空皆會增加使用的土地空間，導致建造成本增加，而建造成本較低的單線則難以提升班次間距，同時若以觀光接駁為考量，多數時段皆為離峰時段不需要密集的班次間距，因此本專題以增加單線鐵路的班次間距作為主要目標。 本專題是增加單線鐵路班次的一種想法，利用傳統電路與可程式控制器PLC結合，在尖峰時段能在路線安全的情況自動發送發車信號使車輛輪流通過單線區域，而在離峰時段也能切換為手動模式來控制車輛經過單線區間，因此除了要讓人員能夠通過操控面板控制號誌外，也要能夠讓PLC進行自動的發車信號發送，同時發出信號的發送必須在路線淨空、安全的情況下始可發送

中国科学院力学研究所;高温气体动力学国家重点实验室;

近年来新的空天飞行器的飞行走廊已经达到地球大气热层下界。受现有测量手段限制,目前对低热层高空大气环境的认知远未完善。本文对格尔木上空100km高度附近的大气环境进行了研究,采取的手段包括数值计算、经验模型、卫星观测数据和地面激光雷达测量等,其中数值计算和地面激光雷达测量由本研究小组完成,前者采用WACCM全球大气模型,后者采用中国科学院大气物理研究所的MARMOT激光雷达;经验模型包括NRLMSISE-00和US-76模型,卫星观测数据来自美国SABER/TIMED卫星。对格尔木2013年8月份100km附近高空大气密度和温度的对比研究表明,大气密度(图1a)和大气温度(图1b),分别存在一个..

Comparison of the simulated and LIDAR measured atmospheric density and temperature in lower thermosphere

The atmospheric density and temperature in lower thermosphere are analyzed using numerical simulation, empirical model, satellite data and ground LIDAR measurement. The WACCM global atmosphere model is used as the numerical simulation method; the empirical models include NRLMSISE-00 and US-76; the satellite data are taken by US SABER/TIMED satellite. The atmospheric density and temperature with an altitude range from 60km to 100km at Germu in August 2013 are measured by a ground LIDAR system. Comparison of the results from different methods shows that the density and temperature are in good agreement below altitudes 90km and 80km, respectively. Above the altitudes, the discrepancy between the different methods increases with increasing altitude. It is also noted that the daily and diurnal variation of density and temperature become significant above 100km altitude

Using Augmented Reality to Build an Instructional System for First-aid Supplies

[[abstract]]近來因為資訊科技的快速進步，民眾普遍擁有電腦裝置，在電腦上使用互動式多媒體內容，也逐漸成為生活中的一部分，進而發展出許多互動式多媒體教材。使用互動式多媒體進行教學，比傳統紙本教學模式更具趣味性，在教材的呈現形式方面也更為豐富。由於一般人對於衛材的使用方法，往往一知半解，就算有紙本說明書，也常常會因其外觀不具吸引力，而忽略不讀，導致衛材使用上的錯誤。所以本研究開發一套互動式多媒體教材，採用Ausubel教學理論，以五項家庭中常見的自助診療衛材為例，利用擴增實境技術，製作出衛材使用的教學系統，然後讓一組受測者實際使用本系統，讓另一組受測者以紙本說明書形式學習相同的衛材知識，再進行試題測驗與滿意度調查，探討兩組在學習成效與滿意度上之差異。結果發現不管是測驗成績或滿意度調查結果，擴增實境組均顯著優於傳統紙本組，也說明擴增實境技術適合用於製作衛材教學材料，可提昇學習成效與滿意度。本研究結合Ausubel教學理論與擴增實境技術的方法，可以擴充至其他領域的教學，甚至應用在廣大的商品使用教學中，來吸引更多的顧客，因此值得推廣。 Because of the recent rapid advances in information technology, computer ownership is common. In addition, the process of accessing interactive multimedia content using computers has been integrated into daily life, prompting the development of various interactive multimedia teaching materials. Compared to traditional paper-based teaching models, teaching using interactive multimedia offers greater enjoyment and diverse methods for presenting teaching materials. People’s understanding of medical supply use is typically insufficient, and they tend to disregard paper-based user manuals because of the unappealing presentation, resulting in incorrect use of medical supplies. Therefore, this study developed a set of interactive multimedia teaching materials using Ausubel’s learning theory. Five common household first-aid supplies were adopted as examples, and an instructional system for medical supply use was established by employing augmented reality (AR) technology. One group of participants used the proposed system to acquire medical supply knowledge, and the other group employed paper-based user manuals. Subsequently, a quiz and a satisfaction survey were administered to examine the differences in learning effectiveness and satisfaction between the groups. The results showed that the quiz scores and satisfaction levels achieved by the AR group were significantly higher than those of the paper-based manual group, indicating that AR technology is suitable for developing medical supply teaching materials and enhances learning effectiveness and satisfaction. The proposed method of combining Ausubel’s learning theory and AR technology can be extended to teaching in other fields and tutorials on a wide range of commercial products, thereby attracting additional customers. Thus, this method is worthy of promotion