State-of-the-art Laboratory Testing and Degradation Assessment of Ballast

2011 ◽  
pp. 99-124
Keyword(s):  
Laboratory Testing ◽  
State Of The Art

Exoskeletons

2019 ◽  
pp. 234-259
Author(s):  
Priyanshu Agarwal ◽  
Ashish D. Deshpande
Keyword(s):  
Case Studies ◽  
Energy Efficient ◽  
Laboratory Testing ◽  
Human Performance ◽  
State Of The Art ◽  
Upper Body ◽  
The Past ◽  
The Future ◽  
Human Use ◽  
Exoskeleton Design

The past few decades have witnessed a rapid explosion in research surrounding robotic exoskeletons due to their promising applications in medicine and human performance augmentation. Several advances in technology have led to the development of more energy efficient and viable prototypes of these devices. However, despite this rapid advancement in exoskeleton technology, most of the developed devices are limited to laboratory testing and a very few of them are commercially available for human use. This chapter discusses the advances in various constituting technologies including actuation, sensing, materials, and controls that made exoskeleton research feasible. Also presented are case studies on two state-of-the-art robotic exoskeletons, Harmony and Maestro, developed for rehabilitation of the upper body. The chapter concludes with a discussion on the ongoing challenges in exoskeleton design and ethical, social, and legal considerations related to the use of these devices and the future of exoskeletons.

Establishing a direct laboratory access program

1995 ◽  
Vol 41 (5) ◽  
pp. 809-812 ◽  
Author(s):  
H B Soloway
Keyword(s):  
Health Services ◽  
Laboratory Testing ◽  
Laboratory Tests ◽  
State Of The Art ◽  
Office Visit ◽  
Medical Intervention ◽  
Small Stream ◽  
Physician Office Visit ◽  
Sole Purpose ◽  
Access Program

Abstract Direct Laboratory Access (DLA) refers to a program whereby individuals who wish to have laboratory testing performed can avail themselves of such testing independently of a physician referral. DLA benefits both physicians and consumers. Physicians benefit by not having to invest time and office resources for consumers who do not seek medical intervention but rather who visit physicians for the sole purpose of obtaining permission to have laboratory tests performed. Consumers benefit by avoiding physician encounters they do not want, by receiving state-of-the-art laboratory testing they do want, and by avoiding the added expense and inconvenience of a physician office visit. DLA appeals to an anxious, educated, and somewhat affluent niche market. The program fills a void in the provision of health services while providing a small stream of revenue for laboratories.

College of American Pathologists Consensus Conference XXXVI: Diagnostic Issues in Thrombophilia

2002 ◽  
Vol 126 (11) ◽  
pp. 1277-1280 ◽  
Author(s):  
John D. Olson
Keyword(s):  
Clinical Studies ◽  
Laboratory Testing ◽  
Medical Literature ◽  
State Of The Art ◽  
Data Extraction ◽  
Consensus Conference ◽  
The State ◽  
Data Sources ◽  
Level Of Evidence ◽  
Thrombotic Risk

Abstract Objectives.—To review the state of the art relating to laboratory testing for thrombophilia, as reflected by the medical literature and the consensus opinion of recognized experts in the field, and to make recommendations regarding laboratory testing (whom to test, when to test, what tests to perform, rationale for testing, and other issues) in the assessment of thrombotic risk in individual patients and their family members. Data Sources.—Review of the medical literature (primarily from the last 10 years) and the experience and opinions of experts in the field were used as data sources. Data Extraction and Synthesis.—Participating authors evaluated the medical literature and prepared manuscripts with specific proposed recommendations. Drafts of all of the manuscripts were prepared and circulated to every participant in the College of American Pathologists Conference XXXVI: Diagnostic Issues in Thrombophilia prior to the conference. Each of the conclusions and associated recommendations was then presented for discussion. Recommendations were accepted if a consensus of 70% or more of the 27 experts attending the conference was reached. The results of the discussion were then used to revise the manuscripts and recommendations into final form. Conclusions.—Consensus was reached on 179 recommendations, all of which are presented in articles in this issue of the Archives. Detailed discussion of the rationale for each of these recommendations is found in the text of the respective articles, along with citations to justify the level of evidence for the recommendations. This is an evolving area of research, and it is certain that further clinical studies will change many of the recommendations, cause some to be deleted, and add others in the future.

scholarly journals Geotechnical factors in seismic design of foundations state-of-the-art report

2000 ◽  
Vol 33 (3) ◽  
pp. 347-370 ◽  
Author(s):  
Miguel P. Romo ◽  
Manuel J. Mendoza ◽  
Silvia R. Garcia
Keyword(s):  
Artificial Intelligence ◽  
Soil Properties ◽  
Seismic Design ◽  
Laboratory Testing ◽  
State Of The Art ◽  
Testing Equipment ◽  
Seismic Stability ◽  
Seismic Load ◽  
Numerical Techniques ◽  
Dynamic Soil Properties

This paper revises the factors that influence the behavior of foundations in seismic environments. It discusses aspects related with seismic load definition, dynamic soil properties, field and laboratory testing equipment, geoseismic instrumentation of prototypes, foundation seismic stability, use of artificial intelligence, among others. It also points out areas where more research is needed to better our knowledge on the physics of the problem and to improve experimental and numerical techniques, with the purpose of making more reliable and less costly foundation systems.

scholarly journals Effects of Coarse Aggregate Shape and Texture on Engineering Properties of Roller Compacted Concrete Prepared for High Traffic Routes

2021 ◽  
Vol 10 (1) ◽  
pp. 88-107
Author(s):  
Alban Chidiebere Ogbonna
Keyword(s):  
Laboratory Testing ◽  
Coarse Aggregate ◽  
State Of The Art ◽  
Asphalt Pavement ◽  
Aggregate Size ◽  
Engineering Properties ◽  
Roller Compacted Concrete ◽  
Concrete Mix ◽  
Pavement Construction ◽  
Aggregate Shape

Abstract Use of roller-compacted concrete in pavement construction is increasing. Roller compacted concrete is a zero-slump, highly compacted concrete that is placed by equipment similar to that used in asphalt pavement construction. This investigation was conducted to collect the state-of-the-art information on effects of coarse aggregate size and texture on the strength and workability of roller-compacted concrete (RCC) for pavement construction and maintenance. Concrete specimens containing cubical and rough coarse aggregate, irregular and rough coarse aggregate, angular and rough coarse aggregate, rounded/spherical and smooth coarse aggregate, and flaky/elongated and rough coarse aggregate were prepared at 1:3:3 concrete mix ratio and 0.4 water cement ratio. Laboratory testing of specimens derived from the concrete specimens showed excellent results for cubical and rough coarse aggregate, irregular and rough coarse aggregate, and angular and rough coarse aggregate. Specimens from the rounded/spherical and smooth coarse aggregate, and flaky/elongated and rough coarse aggregate performed poorly in laboratory. The study therefore recommends the use of cubical and rough coarse aggregate, and irregular and rough coarse aggregate in the production of roller-compacted concrete for pavement construction and maintenance.

Practical Picture Processing

1974 ◽  
Vol 32 ◽  
pp. 338-339
Author(s):  
T. A. Welton
Keyword(s):  
Radiation Damage ◽  
Coherence Length ◽  
Spatial Information ◽  
State Of The Art ◽  
Coherent Radiation ◽  
The State ◽  
Energy Spread ◽  
Electron Micrograph ◽  
Picture Processing ◽  
Molecular Skeleton

Various authors have emphasized the spatial information resident in an electron micrograph taken with adequately coherent radiation. In view of the completion of at least one such instrument, this opportunity is taken to summarize the state of the art of processing such micrographs. We use the usual symbols for the aberration coefficients, and supplement these with £ and 6 for the transverse coherence length and the fractional energy spread respectively. He also assume a weak, biologically interesting sample, with principal interest lying in the molecular skeleton remaining after obvious hydrogen loss and other radiation damage has occurred.

A Macintosh Interface for the Cameca Camebax-Micro Electron Microprobe

1990 ◽  
Vol 48 (1) ◽  
pp. 438-439
Author(s):  
Carl E. Henderson
Keyword(s):  
Electron Microprobe ◽  
Processing Speed ◽  
Word Processing ◽  
State Of The Art ◽  
Computer Control ◽  
Third Party ◽  
Disk Storage ◽  
The Past ◽  
User Facility ◽  
Instrument Control

Over the past few years it has become apparent in our multi-user facility that the computer system and software supplied in 1985 with our CAMECA CAMEBAX-MICRO electron microprobe analyzer has the greatest potential for improvement and updating of any component of the instrument. While the standard CAMECA software running on a DEC PDP-11/23+ computer under the RSX-11M operating system can perform almost any task required of the instrument, the commands are not always intuitive and can be difficult to remember for the casual user (of which our laboratory has many). Given the widespread and growing use of other microcomputers (such as PC’s and Macintoshes) by users of the microprobe, the PDP has become the “oddball” and has also fallen behind the state-of-the-art in terms of processing speed and disk storage capabilities. Upgrade paths within products available from DEC are considered to be too expensive for the benefits received. After using a Macintosh for other tasks in the laboratory, such as instrument use and billing records, word processing, and graphics display, its unique and “friendly” user interface suggested an easier-to-use system for computer control of the electron microprobe automation. Specifically a Macintosh IIx was chosen for its capacity for third-party add-on cards used in instrument control.

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