BIOMECHANICS OF WHEELCHAIR PROPULSION

2009 ◽  
Vol 09 (02) ◽  
pp. 229-242 ◽  
Author(s):  
CHIEN-JU LIN ◽  
PO-CHOU LIN ◽  
FONG-CHIN SU ◽  
KAI-NAN AN
Keyword(s):  
Upper Extremity ◽  
Modern Technology ◽  
Biomechanical Analysis ◽  
Daily Activities ◽  
Analytical Models ◽  
Wheelchair Propulsion ◽  
Mobility Impairments ◽  
Force Application ◽  
The Past

With progress of modern technology, manually-propelled wheelchairs are still of importance for individuals with mobility impairments. The repeated wheelchair propulsion and strenuous daily activities cause high loads and thus injuries on the upper extremity joints. Over the past few years, a considerable number of studies have been made on biomechanical analysis of wheelchair propulsion and wheelchair-related activities. Thorough investigation of biomechanics during wheelchair propulsion enhances comprehension of mechanism of injuries and provides information to improve wheelchair design and fitting. Numerous investigations have been made to demonstrate factors which cause low effectiveness of force application and inefficiency of movements. Emphasis was also placed on developing analytical models to simulate wheelchair propulsion.

Classifying the Past: Discriminant Analysis and its Application to Medieval Farming Systems

1996 ◽  
Vol 8 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Ken Bartley
Keyword(s):  
Cluster Analysis ◽  
Discriminant Analysis ◽  
Processing Time ◽  
Farming Systems ◽  
Frame Of Reference ◽  
Analytical Models ◽  
Successful Implementation ◽  
Medieval Period ◽  
The Past ◽  
Livestock Management

This paper discusses the need for nationally based analytical models of the medieval period. The use of cluster analysis as a method for classifying demesne farms, by the crops they grew and their livestock management, is explained. Successful implementation of cluster analysis requires both the existence of a large base sample, to permit isolation of specific groupings within the data, and access to considerable processing time. The paper concludes by demonstrating how discriminant analysis can provide an efficient and systematic way of classifying even a single manor within a national frame of reference.

Twisted oxide lateral homostructures with conjunction tunability

2021 ◽  
Author(s):  
Jan-Chi Yang ◽  
Ping-Chun Wu ◽  
Chia-Chun Wei ◽  
Qilan Zhong ◽  
Sheng-Zhu Ho ◽  
...  
Keyword(s):  
Wide Spectrum ◽  
Strain Engineering ◽  
Epitaxial Films ◽  
Modern Technology ◽  
Specific Substrate ◽  
Lattice Structures ◽  
High Quality ◽  
The Past ◽  
Sharp Interfaces ◽  
Selection Of

Abstract Epitaxial growth is of significant importance over the past decades, given it has been the key process of modern technology for delivering high-quality thin films. For conventional heteroepitaxy, the selection of proper single crystal substrates not only facilitates the integration of different materials but also fulfills interface and strain engineering upon a wide spectrum of functionalities. Nevertheless, the lattice structures, regularity and crystalline orientation are determined once a specific substrate is chosen. In this work, we reveal the growth of twisted oxide lateral homostructures with multiple conjunction degree of freedom. The twisted lateral homostructures with atomically sharp interfaces can be composed of epitaxial “blocks” with different crystalline orientations, ferroic orders and phases. We further demonstrate that this approach is universal for fabricating various complex systems. Our results establish an efficient pathway towards twisted lateral homostructures, allowing epitaxial films to be arbitrarily tailored at designated positions with unbounded in-plane conjunction tunability.

scholarly journals The effects of rear-wheel camber on the kinematics of upper extremity during wheelchair propulsion

2012 ◽  
Vol 11 (1) ◽  
pp. 87 ◽  
Author(s):  
Chung-Ying Tsai ◽  
Chien-Ju Lin ◽  
Yueh-Chu Huang ◽  
Po-Chou Lin ◽  
Fong-Chin Su
Keyword(s):  
Upper Extremity ◽  
Rear Wheel ◽  
Wheelchair Propulsion

scholarly journals Biomechanical Analysis Of The Closed Kinetic Chain Upper Extremity Stability Test

2020 ◽  
Vol 52 (7S) ◽  
pp. 43-43
Author(s):  
Ethan S. Welch ◽  
Matthew D. Watson ◽  
George J. Davies ◽  
Bryan L. Riemann
Keyword(s):  
Upper Extremity ◽  
Biomechanical Analysis ◽  
Stability Test ◽  
Kinetic Chain ◽  
Closed Kinetic Chain

scholarly journals The influence of altering push force effectiveness on upper extremity demand during wheelchair propulsion

2010 ◽  
Vol 43 (14) ◽  
pp. 2771-2779 ◽  
Author(s):  
Jeffery W. Rankin ◽  
Andrew M. Kwarciak ◽  
W. Mark Richter ◽  
Richard R. Neptune
Keyword(s):  
Upper Extremity ◽  
Wheelchair Propulsion

A Study of English Mobile Learning Applications at National Chengchi University

2009 ◽  
Vol 7 (4) ◽  
pp. 38-60 ◽  
Author(s):  
Pei-Chun Che ◽  
Han-Yi Lin ◽  
Hung-Chin Jang ◽  
Yao-Nan Lien ◽  
Tzu-Chieh Tsai
Keyword(s):  
Mobile Learning ◽  
Positive Response ◽  
Modern Technology ◽  
Learning Activity ◽  
The Internet ◽  
Immediate Feedback ◽  
The Past ◽  
Learning Platform ◽  
Mobile Learning Environment

The pervasive popularity of the Internet in the past decade has changed the way many students live and learn, in part, because modern technology has made it possible for learners to access Real-Time Multimedia information on the Internet, or research any topic of interest to them from virtually any computer anywhere in the world. Students can also receive immediate feedback from their peers and/or their teachers when involved in collaborative projects. As a result, teachers of all disciplines need to incorporate the Internet and the concept of mobile learning into today’s classrooms to take advantage of this technology. This research investigated the response of English majors to a mobile learning platform (NCCU-MLP) developed at National Chengchi University (NCCU) in which they were involved as participants. The goal of the NCCU-MLP is to improve the students’ English ability as well as to update the teachers’ understanding of how to use the technology. The purpose of this research was to investigate the responses of students to a mobile learning environment. The research involved 18 participants in a pilot study and 37 participants in a follow-up study who participated in a group activity involving mobile learning activities. The students were asked to complete the activity following which they completed a brief survey of their response to the mobile learning activity. The findings indicate a positive response from the participants regarding the content and procedures involved in the activity. Technical support for the project was found to need enhancement for future projects of this nature.

News Audiences and News Habits

2018 ◽  
Author(s):  
Jannie Møller Hartley
Keyword(s):  
Big Data ◽  
News Media ◽  
Analytical Models ◽  
Audience Research ◽  
Media Effect ◽  
Audience Studies ◽  
Cross Media ◽  
The Past ◽  
The Media ◽  
Radio News

The focus of news-audience research has shifted from investigating news audiences of single platforms—such as newspapers, television, or radio news—to audiences in an inherently cross-media context; and from examining the audience as passive, choosing between content made available for them; to investigating what audiences do with the news more actively, often coined by the term “news engagement.” News-audience studies can be divided into five approaches: (1) media-effect studies of news consumption; (2) studies of news-media use and motives; (3) cultural audience studies of news practices; (4) news audiences’ comprehension and recall of news; and (5) news engagement in the digital age. Due to changes in the media landscape, both technological and commercial, traditional analytical models in news-audience research have been challenged. The final discussion addresses how a tendency to focus on either reducing audiences to quantifiable aggregates in big-data research or labeling news audiences as a thing of the past can be observed—in both cases removing news-audience research from actual empirical audiences.

Clusters Of Polyhedra In Architecture

1996 ◽  
Vol 11 (1-2) ◽  
pp. 97-101
Author(s):  
J. Francois Gabriel
Keyword(s):  
Good Reason ◽  
Modern Technology ◽  
Rectangular Grid ◽  
Connected Network ◽  
Advantages And Disadvantages ◽  
Truncated Octahedron ◽  
The Past ◽  
Building Systems ◽  
Visual Order ◽  
Do So

Conventional structural and building systems could not in the past bring into existence medium-rise buildings based on polyhedra. Modern technology makes it now possible to conceive and erect such buildings. One good reason to do so is that clusters of polyhedra can satisfy an essential need of architecture: the need for visual order. Too many contemporary buildings rely on a simplistic rectangular grid. The effect is, indeed, orderly, but it is also usually boring and non-hierarchical. The configuration selected here is the 12-connected network considered as a habitable three-way, multi-layer space frame. It is presented along with two variations. One is an infinite structure of three polyhedra also derived from the 12-connected network, the truncated octahedron, the cuboctahedron and the truncated tetrahedron. The other configuration is the honeycomb pattern resulting from the absorption of tetrahedron by adjacent octahedra, to which I have given the name Hexmod. Similarities and differences are identified and advantages and disadvantages of the three patterns are examined. Finally, combinations between patterns are introduced.

Biomechanical analysis of the closed kinetic chain upper extremity stability test in healthy young adults

2020 ◽  
Vol 45 ◽  
pp. 120-125
Author(s):  
Ethan S. Welch ◽  
Matthew D. Watson ◽  
George J. Davies ◽  
Bryan L. Riemann
Keyword(s):  
Young Adults ◽  
Upper Extremity ◽  
Biomechanical Analysis ◽  
Stability Test ◽  
Kinetic Chain ◽  
Closed Kinetic Chain
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