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FUN WAYS TO IMPROVE ENGLISH LISTENING SKILLS

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山东外语教学 1990年第4期11卷 74-77,73页

作者： Gregory .lee professor of Los Angeles Community College

Any language is a sound language. In the process of its formation, the oral language comes first, then appears the written one. A language exists in the society as a communicative tool and the main form of communication is oral communication. That is, listening and speaking, A survey shows that we communicate this way: listening 40％, speaking 30％, reading 20％, writing 10％. We can really see the importance of listening and speaking.

关键词： listening speaking comes writing lesson communicate begin textbook trouble really

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“海洋之眼”水下无人机设计,看清海底万象

工业设计 2024年第7期 16-16页

作者： Snow lee 不详

来源:https://***/zh/project/oceaneye-64758“海洋之眼”水下无人机可用于各种水下环境,它有八个螺旋桨,可通过遥控器或智能手机应用程序进行操控。用户可以通过4K摄像机拍摄的画面看到无人机所处的水下世界。根据工作任务的不同,“... 详细信息

来源:https://***/zh/project/oceaneye-64758“海洋之眼”水下无人机可用于各种水下环境,它有八个螺旋桨,可通过遥控器或智能手机应用程序进行操控。用户可以通过4K摄像机拍摄的画面看到无人机所处的水下世界。根据工作任务的不同,“海洋之眼”还可选配机械臂、声呐、激光测距仪或水样采集器等多种附件。此外,无人机采用美丽的流线型设计,方便在水中快速移动。

关键词：无人机设计流线型设计激光测距仪水样采集机械臂水下环境遥控器快速移动

Prospects and challenges in augmented reality displays

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Virtual Reality & Intelligent Hardware 2019年第1期1卷 10-20页

作者： Yun-Han lee Tao ZHAN Shin-Ison WU College of Optics&Photonics University of Central FloridaOrlandoFL 32816USA

Augmented reality(AR)displays are attracting significant attention and *** this paper,we review the adopted device configurations of see-through displays,summarize the current development status and highlight future challenges in micro-displays.A brief introduction to optical gratings is presented to help understand the challenging design of grating-based waveguide for AR ***,we discuss the most recent progress in diffraction grating and its implications.

关键词： Near-eye displays see-through display Augmented reality Micro-displays Bragg gratings

Holographic techniques for augmented reality and virtual reality near-eye displays

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Light(Advanced Manufacturing) 2022年第1期3卷 114-127页

作者： Jae-Hyeung Park Byoungho lee Department of Information and Communication Engineering Inha UniversityIncheon22212Korea. School of Electrical and Computer Engineering Seoul National UniversitySeoul08826Korea

Near-eye displays are the main platform devices for many augmented reality(AR)and virtual reality(VR)*** a wearable device,a near-eye display should have a compact form factor and be ***,a large field of view and sufficient eyebox are crucial for immersive viewing *** three-dimensional(3D)image presentation with proper focus cues is another requirement that enables a comfortable viewing experience and natural user ***,in the case of AR,the device should allow for an optical see-through view of the real *** bulk optics and two-dimensional display panels exhibit clear limitations when implementing these *** techniques have been applied to near-eye displays in various aspects to overcome the limitations of conventional *** wavefront reconstruction capability of holographic techniques has been extensively exploited to develop optical see-through 3D holographic near-eye displays of glass-like form *** this article,the application of holographic techniques to AR and VR near-eye displays is *** applications are introduced,such as static holographic optical components and dynamic holographic display *** issues and recent progress are also reviewed,providing a comprehensive overview of holographic techniques that are applied to AR and VR near-eye displays.

关键词： Holography Augmented display Virtual reality

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Sky Green

建筑实践 2020年第8期 162-171页

作者： WONG Mun Summ Richard Hassell Pearl Chee Siew Choo see Jian Fa LIN Li Ping Billy Novia Prima Tay I-Lin Nick Puah John Paul R Gonzales Josephine Isip Anthony Wong SHU Xian Kuomin lee WOHA

地点:中国台湾台中市Location:Taichung,China Taiwan2012年,WOHA受台中市政府和逢甲大学的邀请,将其"呼吸建筑"展览带到台中。这次展览是由市政府的门户项目总体规划发起的计划的一部分,该计划重点关注可持续性、低碳排放和智慧城市的...

地点:中国台湾台中市Location:Taichung,China Taiwan2012年,WOHA受台中市政府和逢甲大学的邀请,将其"呼吸建筑"展览带到台中。这次展览是由市政府的门户项目总体规划发起的计划的一部分,该计划重点关注可持续性、低碳排放和智慧城市的设计原则。政府正在起草新法规,以使台中市在下一阶段的发展中成为一个更绿色、更宜居的城市。展览之后,

关键词：

Large colonic lipoma with a laterally spreading tumor treated by endoscopic submucosal dissection:A case report

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世界临床病例杂志 2023年第26期11卷 6194-6199页

作者： Jun Yong Bae Hun Kyu Kim Yee Jin Kim Se Woong Kim Youngeun lee Chang Beom Ryu Moon Sung lee Internal Medicine and Digestive Disease Center Seoul Medical CenterSeoul 02053South Korea Department of Pathology Seoul Medical CenterSeoul 02053South Korea Internal Medicine and Digestive Disease Center and Research Institute Soon Chun Hyang University of School of MedicineBucheon 14584South Korea

BACKGROUND Since fat does not transmit electrical energy well,delayed perforation and postpolypectomy syndrome due to electrical thermal injury are concerns in the endoscopic removal of colonic *** endoscopic submucosal dissection(ESD)technique concentrates electrical energy conducts to the submucosa,not the adipose *** helps to minimize electrical thermal injury,especially in the case of large colonic *** rare cases,such as colonic lipomas accompanied by mucosal lesions,it is difficult for endoscopists to decide how to safely remove *** SUMMARY A 78-year-old man underwent colonoscopy for colorectal cancer *** colonoscopy,a yellowish submucosal tumor with positive cushion sign was observed in the ascending colon measuring about 4.5 cm.A nodular mucosal lesion of about 2.5 cm was observed on the mucosal surface of the *** lipoma was so large that it occupied much of the inside of the colon,making it difficult to see the entire laterally spreading tumor(LST)at *** LST was confined to the surface of the lipoma,which had a semipedunculated shape with a wide *** margin of the LST was not observed at the neck of the *** was performed and the colonic lipoma with the LST was successfully removed without *** 3 d of hospitalization,the patient was discharged without any *** final pathology report showed that the lesion consisted of submucosal lipoma and tubulovillous adenoma with lowgrade *** ESD is effective and safe for treating a large colonic lipoma with an LST by minimizing electrical thermal injury.

关键词： Colonic lipoma Endoscopic submucosal dissection Laterally spreading tumor Tubulovillous adenoma Electrical injury Case report

Nonlinear analysis of pre-tensioned glass wall facade by stability function with initial imperfection

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Frontiers of Structural and Civil Engineering 2010年第3期4卷 376-382页

作者： Siu-Lai CHAN Yaopeng LIU Andy lee Department of Civil and Structural Engineering The Hong Kong Polytechnic UniversityHong KongChina Ove Arup and Partners(Hong Kong)Limited Hong KongChina

Pre-tensioned high strength trusses using alloy steel bar are widely used as glass wall supporting systems because of the high degree of *** breakage of glass panes in this type of system occurs occasionally,likely to be due to error in design and analysis in addition to other factors like glass impurity and stress concentration around opening in a spider *** design does not consider the flexibility of supports from finite stiffness of supporting steel or reinforced concrete *** resistance of lateral wind pressure of the system makes use of high tension force coupled with the large deflection effect,both of which are affected by many parameters not generally considered in conventional *** the design,one must therefore give a careful consideration on various effects,such as support settlement due to live loads and material creep,temperature change,pre-tension force,and wind *** is not uncommon to see many similar glass wall systems fail in the wind load test chambers under a design wind *** paper presents a rigorous analysis and design of this type of structural systems used in a project in Hong Kong,*** stability function with initial curvature is used in place of the cubic function,which is only accurate for linear *** considerations and analysis techniques are believed to be of value to engineers involved in the design of the structural systems behaving nonlinearly.

关键词： tension system glass wall nonlinear analysis pre-tensioning second-order analysis

Role of a wireless surface electromyography in dystonic gait in functional movement disorders: A case report

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World Journal of Clinical Cases 2020年第2期8卷 313-317页

作者： Min-Kyun Oh Hyeong Seop Kim Yun Jeong Jang Chang Han lee Department of Rehabilitation Medicine Gyeongsang National University School of Medicine and Gyeongsang National University Hospital

BACKGROUND Dystonic gait(DG) is one of clinical symptoms associated with functional dystonia in the functional movement disorders(FMDs). Dystonia is often initiated or worsened by voluntary action and associated with overflow muscle activation. There is no report for DG in FMDs caused by an abnormal pattern in the ankle muscle recruitment strategy during *** SUMMARY A 52-year-old male patient presented with persistent limping gait. When we requested him to do dorsiflexion and plantar flexion of his ankle in the standing and seating positions, we didn’t see any abnormality. However, we could see the DG during the gait. There were no evidences of common peroneal neuropathy and L5 radiculopathy in the electrodiagnostic study. Magnetic resonance imaging of the lumbar spine, lower leg, and brain had no definite finding. No specific finding was seen in the neurologic examination. For further evaluation, a wireless surface electromyography(EMG) was performed. During the gait, EMG amplitude of left medial and lateral gastrocnemius(GCM) muscles was larger than right medial and lateral GCM muscles. When we analyzed EMG signals for each muscle, there were EMG bursts of double-contraction in the left medial and lateral GCM muscles, while EMG analysis of right medial and lateral GCM muscles noted regular bursts of single contraction. We could find a cause of DG in *** We report an importance of a wireless surface EMG, in which other examination didn’t reveal the cause of DG in FMDs.

关键词： Gait disorders Dystonic gait Surface electromyography Functional movement disorders Case report

Tunable liquid crystal grating based holographic 3D display system with wide viewing angle and large size

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Light(Science & Applications) 2022年第7期11卷 1575-1584页

作者： Yi-Long Li Nan-Nan Li Di Wang Fan Chu Sin-Doo lee Yi-Wei Zheng Qiong-Hua Wang School of Instrumentation and Optoelectronic Engineering Beihang UniversityBeijingChina Display Technology Research Center Seoul National UniversityGwanak-guSeoulRepublic of Korea

As one of the most ideal display approaches,holographic 3-dimensional(3D)display has always been a research hotspot since the holographic images reproduced in such system are very similar to what humans see the actual ***,current holographic 3D displays suffer from critical bottlenecks of narrow viewing angle and small ***,we propose a tunable liquid crystal grating-based holographic 3D display system with wide viewing angle and large *** tunable liquid crystal grating,providing an adjustable period and the secondary diffraction of the reconstructed image,enables to simultaneously implement two different hologram generation methods in achieving wide viewing angle and enlarged size,*** using the secondary diffraction mechanism of the tunable liquid crystal grating,the proposed system breaks through the limitations of narrow viewing angle and small size of holographic 3D *** proposed system shows a viewing angle of 57.4°,which is nearly 7 times of the conventional case with a single spatial light modulator,and the size of the reconstructed image is enlarged by about *** proposed system will have wide applications in medical diagnosis,advertising,education and entertainment and other fields.

关键词： holographic system angle