WorldWideScience

Sample records for non-powered hand-held work

  1. Assessment of nickel and cobalt release from 200 unused hand-held work tools for sale in Denmark — Sources of occupational metal contact dermatitis?

    DEFF Research Database (Denmark)

    Thyssen, Jacob P.; Jensen, Peter; Lidén, Carola

    2011-01-01

    tools for sale in 2 retailers of home improvement and construction products were analyzed qualitatively for metal release using the colorimetric nickel and cobalt spot tests. ResultsNickel release was identified from 5% of 200 work tools using the dimethylglyoxime (DMG) test. In 8 of 10, positive......IntroductionNickel and cobalt allergy remain frequent in dermatitis patients. It is important to determine possible nickel and cobalt exposures at work as these may offer important information to regulators and physicians who perform patch testing. Clinical relevance of metal exposure is usually...... assessed by the treating physician via the medical history and by presentation of allergic contact dermatitis. ObjectivesTo screen unused non-powered hand-held work tools for nickel and cobalt release by using colorimetric spot tests. Materials & methodsA random selection of 200 non-powered hand-held work...

  2. Hand-held medical robots.

    Science.gov (United States)

    Payne, Christopher J; Yang, Guang-Zhong

    2014-08-01

    Medical robots have evolved from autonomous systems to tele-operated platforms and mechanically-grounded, cooperatively-controlled robots. Whilst these approaches have seen both commercial and clinical success, uptake of these robots remains moderate because of their high cost, large physical footprint and long setup times. More recently, researchers have moved toward developing hand-held robots that are completely ungrounded and manipulated by surgeons in free space, in a similar manner to how conventional instruments are handled. These devices provide specific functions that assist the surgeon in accomplishing tasks that are otherwise challenging with manual manipulation. Hand-held robots have the advantages of being compact and easily integrated into the normal surgical workflow since there is typically little or no setup time. Hand-held devices can also have a significantly reduced cost to healthcare providers as they do not necessitate the complex, multi degree-of-freedom linkages that grounded robots require. However, the development of such devices is faced with many technical challenges, including miniaturization, cost and sterility, control stability, inertial and gravity compensation and robust instrument tracking. This review presents the emerging technical trends in hand-held medical robots and future development opportunities for promoting their wider clinical uptake.

  3. Microfluidic MEMS hand-held flow cytometer

    Science.gov (United States)

    Grafton, Meggie M. G.; Maleki, Teimour; Zordan, Michael D.; Reece, Lisa M.; Byrnes, Ron; Jones, Alan; Todd, Paul; Leary, James F.

    2011-02-01

    Due to a number of recent technological advances, a hand-held flow cytometer can be achieved by use of semiconductor illuminators, optical sensors (all battery powered) and sensitive cell markers such as immuno-quantum dot (Qdot) labels. The specific application described is of a handheld blood analyzer that can quickly process a drop of whole, unfractionated human peripheral blood by real-time, on-chip magnetic separation of white blood cells (WBCs) and red blood cells (RBCs) and further fluorescence analysis of Qdot labeled WBC subsets. Various microfluidic patterns were fabricated in PDMS and used to characterize flow of single cells and magnetic deflection of magnetically labeled cells. An LED excitation, avalanche photodiode detection system (SensL Technologies, Ltd., Cork, Ireland) was used for immuno-Qdot detection of WBC subsets. A static optical setup was used to determine the sensitivity of the detection system. In this work we demonstrate: valve-less, on-chip magnetic sorting of immunomagnetically labeled white blood cells, bright Qdot labeling of lymphocytes, and counting of labeled white blood cells. Comparisons of these results with conventional flow cytometric analyses are reported. Sample preparation efficiency was determined by labeling of isolated white blood cells. Appropriate flow rates were determined for optical detection and confirmed with flowing particles. Several enabling technologies required for a truly portable, battery powered, hand-held flow cytometer for use in future point-of-care diagnostic devices have been demonstrated. The combining of these technologies into an integrated handheld instrument is in progress and results on whole blood cell analysis are to be reported in another paper.

  4. Hand-held Dynamo-metry

    OpenAIRE

    Ploeg, Rutger Jan Otto van der

    1992-01-01

    This study describes the application of a hand-held dynamometer that was designed to measure muscle strength in normal individuals and neurological patients in a simple way, comparable to manual muscle testing. Zie: Summary

  5. HAND-HELD MYOMETRY - REFERENCE VALUES

    NARCIS (Netherlands)

    VANDERPLOEG, RJO; FIDLER, [No Value; OOSTERHUIS, HJGH

    1991-01-01

    In thirteen major muscle groups of 50 healthy females and 50 males, aged 20-60 years, maximum voluntary contraction was measured with a hand-held dynamometer. The intrasession variation, the left-right variation, and the fifth and fiftieth centile values were calculated. The ratio of two observation

  6. Interial sensing in a hand held dynamometer

    NARCIS (Netherlands)

    Veltink, Peter H.; Nieuwland, Daniel M.; Harlaar, Jaap; Baten, Chris T.M.

    1996-01-01

    Two methods for kinematic sensing in a hand-held dynamometer using accelerometers and gyroscopes are presented. The first method integrates the angular velocity signal from the gyroscope, after calibration of gyroscope offset and joint angle from a static period immediately preceding each measuremen

  7. Assessment of nickel and cobalt release from 200 unused hand-held work tools for sale in Denmark - Sources of occupational metal contact dermatitis?

    DEFF Research Database (Denmark)

    Thyssen, Jacob P; Jensen, Peter; Lidén, Carola

    2011-01-01

    Nickel and cobalt allergy remain frequent in dermatitis patients. It is important to determine possible nickel and cobalt exposures at work as these may offer important information to regulators and physicians who perform patch testing. Clinical relevance of metal exposure is usually assessed by ...

  8. High performance hand-held gas chromatograph

    Energy Technology Data Exchange (ETDEWEB)

    Yu, C.M.

    1998-04-28

    The Microtechnology Center of Lawrence Livermore National Laboratory has developed a high performance hand-held, real time detection gas chromatograph (HHGC) by Micro-Electro-Mechanical-System (MEMS) technology. The total weight of this hand-held gas chromatograph is about five lbs., with a physical size of 8{close_quotes} x 5{close_quotes} x 3{close_quotes} including carrier gas and battery. It consumes about 12 watts of electrical power with a response time on the order of one to two minutes. This HHGC has an average effective theoretical plate of about 40k. Presently, its sensitivity is limited by its thermal sensitive detector at PPM. Like a conventional G.C., this HHGC consists mainly of three major components: (1) the sample injector, (2) the column, and (3) the detector with related electronics. The present HHGC injector is a modified version of the conventional injector. Its separation column is fabricated completely on silicon wafers by means of MEMS technology. This separation column has a circular cross section with a diameter of 100 pm. The detector developed for this hand-held GC is a thermal conductivity detector fabricated on a silicon nitride window by MEMS technology. A normal Wheatstone bridge is used. The signal is fed into a PC and displayed through LabView software.

  9. Vibration and impulsivity analysis of hand held olive beaters.

    Science.gov (United States)

    Deboli, Roberto; Calvo, Angela; Preti, Christian

    2016-07-01

    To provide more effective evaluations of hand arm vibration syndromes caused by hand held olive beaters, this study focused on two aspects: the acceleration measured at the tool pole and the analysis of the impulsivity, using the crest factor. The signals were frequency weighted using the weighting curve Wh as described in the ISO 5349-1 standard. The same source signals were also filtered by the Wh-bl filter (ISO/TS 15694), because the weighting filter Wh (unlike the Wh-bl filter) could underestimate the effect of high frequency vibration on vibration-induced finger disorders. Ten (experienced) male operators used three beater models (battery powered) in the real olive harvesting condition. High vibration total values were obtained with values never lower than 20 m(-2). Concerning the crest factor, the values ranged from 5 to more than 22. This work demonstrated that the hand held olive beaters produced high impulsive loads comparable to the industry hand held tools.

  10. 30 CFR 57.12033 - Hand-held electric tools.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Hand-held electric tools. 57.12033 Section 57.12033 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND NONMETAL... Surface and Underground § 57.12033 Hand-held electric tools. Hand-held electric tools shall not...

  11. 30 CFR 56.12033 - Hand-held electric tools.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Hand-held electric tools. 56.12033 Section 56.12033 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND NONMETAL....12033 Hand-held electric tools. Hand-held electric tools shall not be operated at high...

  12. Hand-held microwave search detector

    Science.gov (United States)

    Daniels, David J.; Philippakis, Mike

    2005-05-01

    This paper describes the further development of a patented, novel, low cost, microwave search detector using noise radar technology operating in the 27-40GHz range of frequencies, initially reported in SPIE 2004. Initial experiments have shown that plastic explosives, ceramics and plastic material hidden on the body can be detected with the system. This paper considers the basic physics of the technique and reports on the development of a initial prototype system for hand search of suspects and addresses the work carried out on optimisation of PD and FAR. The radar uses a novel lens system and the design and modelling of this for optimum depth of field of focus will be reported.

  13. Epilepsy Forewarning Using A Hand-Held Device

    Energy Technology Data Exchange (ETDEWEB)

    Hively, LM

    2005-02-21

    Over the last decade, ORNL has developed and patented a novel approach for forewarning of a large variety of machine and biomedical events. The present implementation uses desktop computers to analyze archival data. This report describes the next logical step in this effort, namely use of a hand-held device for the analysis.

  14. 30 CFR 57.7053 - Moving hand-held drills.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Moving hand-held drills. 57.7053 Section 57.7053 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND NONMETAL MINE SAFETY AND HEALTH SAFETY AND HEALTH STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Drilling...

  15. 30 CFR 56.7053 - Moving hand-held drills.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Moving hand-held drills. 56.7053 Section 56.7053 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND NONMETAL MINE SAFETY AND HEALTH SAFETY AND HEALTH STANDARDS-SURFACE METAL AND NONMETAL MINES Drilling and...

  16. Hand-Held Ultrasonic Instrument for Reading Matrix Symbols

    Science.gov (United States)

    Schramm, Harry F.; Kula, John P.; Gurney, John W.; Lior, Ephraim D.

    2008-01-01

    A hand-held instrument that would include an ultrasonic camera has been proposed as an efficient means of reading matrix symbols. The proposed instrument could be operated without mechanical raster scanning. All electronic functions from excitation of ultrasonic pulses through final digital processing for decoding matrix symbols would be performed by dedicated circuitry within the single, compact instrument housing.

  17. Portable Hand-Held Electrochemical Sensor for the Transuranics

    Energy Technology Data Exchange (ETDEWEB)

    Dale D. Russell, William B. Knowlton, Ph.D.; Russel Hertzog, Ph.D

    2005-11-25

    sensitive detector for uranium. Millimeter scale electrodes, operated by a hand-held instrument assembled in this lab and operated in the voltammetric mode, were transported to the DOE-Nevada test site (Las Vegas, NV) where field detection and quantitation of plutonium, uranium, and a mixture of these two elements was also demonstrated. Several probe designs were prepared, built and tested including probes with movable protective windows. A miniature, battery powered potentiostat was designed, built and demonstrated for use in a hand-held field portable instrument. This work was performed largely by undergraduates who gained valuable research experience, and many of them have continued on to graduate schools. In addition, they all gained exposure to and appreciation for national security research, in particular non-proliferation research. Four graduate students participated and one earned the MS degree on this project.

  18. A high resolution hand-held focused beam profiler

    Science.gov (United States)

    Zapata-Farfan, J.; Garduño-Mejía, J.; Rosete-Aguilar, M.; Ascanio, G.; Román-Moreno, C. J.

    2017-05-01

    The shape of a beam is important in any laser application and depending on the final implementation, there exists a preferred one which is defined by the irradiance distribution.1 The energy distribution (or laser beam profile) is an important parameter in a focused beam, for instance, in laser cut industry, where the beam shape determines the quality of the cut. In terms of alignment and focusing, the energy distribution also plays an important role since the system must be configured in order to reduce the aberration effects and achieve the highest intensity. Nowadays a beam profiler is used in both industry and research laboratories with the aim to characterize laser beams used in free-space communications, focusing and welding, among other systems. The purpose of the profile analyzers is to know the main parameters of the beam, to control its characteristics as uniformity, shape and beam size as a guide to align the focusing system. In this work is presented a high resolution hand-held and compact design of a beam profiler capable to measure at the focal plane, with covered range from 400 nm to 1000 nm. The detection is reached with a CMOS sensor sized in 3673.6 μm x 2738.4 μm which acquire a snap shot of the previously attenuated focused beam to avoid the sensor damage, the result is an image of beam intensity distribution, which is digitally processed with a RaspberryTMmodule gathering significant parameters such as beam waist, centroid, uniformity and also some aberrations. The profiler resolution is 1.4 μm and was probed and validated in three different focusing systems. The spot sizes measurements were compared with the Foucault knife-edge test.

  19. Interactive topology optimization on hand-held devices

    DEFF Research Database (Denmark)

    Aage, Niels; Nobel-Jørgensen, Morten; Andreasen, Casper Schousboe

    2013-01-01

    This paper presents an interactive topology optimization application designed for hand-held devices running iOS or Android. The TopOpt app solves the 2D minimum compliance problem with interactive control of load and support positions as well as volume fraction. Thus, it is possible to change......OS devices from the Apple App Store, at Google Play for the Android platform, and a web-version can be run from www.topopt.dtu.dk....

  20. Promoting Physical Activity through Hand-Held Computer Technology

    Science.gov (United States)

    King, Abby C.; Ahn, David K.; Oliveira, Brian M.; Atienza, Audie A.; Castro, Cynthia M.; Gardner, Christopher D.

    2009-01-01

    Background Efforts to achieve population-wide increases in walking and similar moderate-intensity physical activities potentially can be enhanced through relevant applications of state-of-the-art interactive communication technologies. Yet few systematic efforts to evaluate the efficacy of hand-held computers and similar devices for enhancing physical activity levels have occurred. The purpose of this first-generation study was to evaluate the efficacy of a hand-held computer (i.e., personal digital assistant [PDA]) for increasing moderate intensity or more vigorous (MOD+) physical activity levels over 8 weeks in mid-life and older adults relative to a standard information control arm. Design Randomized, controlled 8-week experiment. Data were collected in 2005 and analyzed in 2006-2007. Setting/Participants Community-based study of 37 healthy, initially underactive adults aged 50 years and older who were randomized and completed the 8-week study (intervention=19, control=18). Intervention Participants received an instructional session and a PDA programmed to monitor their physical activity levels twice per day and provide daily and weekly individualized feedback, goal setting, and support. Controls received standard, age-appropriate written physical activity educational materials. Main Outcome Measure Physical activity was assessed via the Community Healthy Activities Model Program for Seniors (CHAMPS) questionnaire at baseline and 8 weeks. Results Relative to controls, intervention participants reported significantly greater 8-week mean estimated caloric expenditure levels and minutes per week in MOD+ activity (p<0.04). Satisfaction with the PDA was reasonably high in this largely PDA-naive sample. Conclusions Results from this first-generation study indicate that hand-held computers may be effective tools for increasing initial physical activity levels among underactive adults. PMID:18201644

  1. Promoting physical activity through hand-held computer technology.

    Science.gov (United States)

    King, Abby C; Ahn, David K; Oliveira, Brian M; Atienza, Audie A; Castro, Cynthia M; Gardner, Christopher D

    2008-02-01

    Efforts to achieve population-wide increases in walking and similar moderate-intensity physical activities potentially can be enhanced through relevant applications of state-of-the-art interactive communication technologies. Yet few systematic efforts to evaluate the efficacy of hand-held computers and similar devices for enhancing physical activity levels have occurred. The purpose of this first-generation study was to evaluate the efficacy of a hand-held computer (i.e., personal digital assistant [PDA]) for increasing moderate intensity or more vigorous (MOD+) physical activity levels over 8 weeks in mid-life and older adults relative to a standard information control arm. Randomized, controlled 8-week experiment. Data were collected in 2005 and analyzed in 2006-2007. Community-based study of 37 healthy, initially underactive adults aged 50 years and older who were randomized and completed the 8-week study (intervention=19, control=18). Participants received an instructional session and a PDA programmed to monitor their physical activity levels twice per day and provide daily and weekly individualized feedback, goal setting, and support. Controls received standard, age-appropriate written physical activity educational materials. Physical activity was assessed via the Community Healthy Activities Model Program for Seniors (CHAMPS) questionnaire at baseline and 8 weeks. Relative to controls, intervention participants reported significantly greater 8-week mean estimated caloric expenditure levels and minutes per week in MOD+ activity (pfirst-generation study indicate that hand-held computers may be effective tools for increasing initial physical activity levels among underactive adults.

  2. Adaptive RF front-ends for hand-held applications

    CERN Document Server

    van Bezooijen, Andre; van Roermund, Arthur

    2010-01-01

    The RF front-end - antenna combination is a vital part of a mobile phone because its performance is very relevant to the link quality between hand-set and cellular network base-stations. The RF front-end performance suffers from changes in operating environment, like hand-effects, that are often unpredictable. ""Adaptive RF Front-Ends for Hand-Held Applications"" presents an analysis on the impact of fluctuating environmental parameters. In order to overcome undesired behavior two different adaptive control methods are treated that make RF frond-ends more resilient: adaptive impedance control,

  3. Adaptation of Predictive Models to PDA Hand-Held Devices

    Directory of Open Access Journals (Sweden)

    Lin, Edward J

    2008-01-01

    Full Text Available Prediction models using multiple logistic regression are appearing with increasing frequency in the medical literature. Problems associated with these models include the complexity of computations when applied in their pure form, and lack of availability at the bedside. Personal digital assistant (PDA hand-held devices equipped with spreadsheet software offer the clinician a readily available and easily applied means of applying predictive models at the bedside. The purposes of this article are to briefly review regression as a means of creating predictive models and to describe a method of choosing and adapting logistic regression models to emergency department (ED clinical practice.

  4. Hand-held portable microarray reader for biodetection

    Science.gov (United States)

    Thompson, Deanna Lynn; Coleman, Matthew A; Lane, Stephen M; Matthews, Dennis L; Albala, Joanna; Wachsmann-Hogiu, Sebastian

    2013-04-23

    A hand-held portable microarray reader for biodetection includes a microarray reader engineered to be small enough for portable applications. The invention includes a high-powered light-emitting diode that emits excitation light, an excitation filter positioned to receive the excitation light, a slide, a slide holder assembly for positioning the slide to receive the excitation light from the excitation filter, an emission filter positioned to receive the excitation light from the slide, a lens positioned to receive the excitation light from the emission filter, and a CCD camera positioned to receive the excitation light from the lens.

  5. Hand held instruments for landmine detection: View from radiation dosimetry

    Energy Technology Data Exchange (ETDEWEB)

    Akkurt, Hatice [Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831 (United States)], E-mail: akkurth@ornl.gov; Wagner, John; Eckerman, Keith [Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831 (United States)

    2007-08-21

    Hand held instruments have been proposed and widely studied for landmine detection. However, the operator is not included in these design studies. In this paper, the dose rate received by an operator of a hand held instrument for landmine detection is analyzed using a computational phantom model with Monte Carlo simulations for different source types and source-to-operator distances. The analysis is performed for bare and shielded sources in order to assess the impact of shielding on the operator dose. Additionally, the impact of having soil with varying moisture content has also been investigated. The analysis results, based on Monte Carlo simulations, showed that in addition to source properties, energy, shielding, and source-to-operator distance, the dose received by the operator also depends on soil characteristics. Furthermore, although the effective dose decreases as a function of source-to-operator distance, the absorbed and equivalent dose to some organs at radiogenic risk; e.g. the lungs, thyroid, and stomach, increases with source-to-operator distances, up to 125 cm.

  6. Bone age maturity assessment using hand-held device

    Science.gov (United States)

    Ratib, Osman M.; Gilsanz, Vicente; Liu, Xiaodong; Boechat, M. I.

    2004-04-01

    Purpose: Assessment of bone maturity is traditionally performed through visual comparison of hand and wrist radiograph with existing reference images in textbooks. Our goal was to develop a digital index based on idealized hand Xray images that can be incorporated in a hand held computer and used for visual assessment of bone age for patients. Material and methods: Due to the large variability in bone maturation in normals, we generated a set of "ideal" images obtained by computer combinations of images from our normal reference data sets. Software for hand-held PDA devices was developed for easy navigation through the set of images and visual selection of matching images. A formula based on our statistical analysis provides the standard deviation from normal based on the chronological age of the patient. The accuracy of the program was compared to traditional interpretation by two radiologists in a double blind reading of 200 normal Caucasian children (100 boys, 100 girls). Results: Strong correlations were present between chronological age and bone age (r > 0.9) with no statistical difference between the digital and traditional assessment methods. Determinations of carpal bone maturity in adolescents was slightly more accurate using the digital system. The users did praise the convenience and effectiveness of the digital Palm Index in clinical practice. Conclusion: An idealized digital Palm Bone Age Index provides a convenient and effective alternative to conventional atlases for the assessment of skeletal maturity.

  7. Training food service supervisors using hand-held computers to conduct nutritional screening of institutionalized elderly patients.

    Science.gov (United States)

    Orta, J

    1995-01-01

    Six food service supervisors (FSSs) working in skilled nursing facilities were trained to use a hand-held computer, COMPU-CAL/PRO 5.1, to screen institutionalized elderly patients for selected nutritional variables and to record results in the medical record. The study demonstrates that hand-held computer-assisted nutritional screenings: (1) are readily adaptable to on-going efforts, (2) are useful in identifying potential indicators of poor nutritional status in institutionalized elderly patients, (3) can be taught to FSS in a relatively short time, (4) increase nutritionally relevant variables that can be assessed, and (5) improve the quality of documentation in the medical record.

  8. 78 FR 27441 - NIJ Evaluation of Hand-Held Cell Phone Detector Devices

    Science.gov (United States)

    2013-05-10

    ... of Justice Programs NIJ Evaluation of Hand-Held Cell Phone Detector Devices AGENCY: National...) is soliciting interest in supplying hand-held cell phone detector devices for participation in an... soliciting interest in supplying hand-held cell phone detector devices for participation in an evaluation...

  9. 47 CFR 15.519 - Technical requirements for hand held UWB systems.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false Technical requirements for hand held UWB... DEVICES Ultra-Wideband Operation § 15.519 Technical requirements for hand held UWB systems. (a) UWB devices operating under the provisions of this section must be hand held, i.e., they are relatively...

  10. Hand-held spectrophotometer design for textile fabrics

    Science.gov (United States)

    Böcekçi, Veysel Gökhan; Yıldız, Kazım

    2017-09-01

    In this study, a hand-held spectrophotometer was designed by taking advantage of the developments in modern optoelectronic technology. Spectrophotometer devices are used to determine the color information from the optic properties of the materials. As an alternative to a desktop spectrophotometer device we have implemented, it is the first prototype, low cost and portable. The prototype model designed for the textile industry can detect the color tone of any fabric. The prototype model consists of optic sensor, processor, display floors. According to the color applied on the optic sensor, it produces special frequency information on its output at that color value. In Arduino type processor, the frequency information is evaluated by the program we have written and the color tone information between 0-255 ton is decided and displayed on the screen.

  11. Comparative Geometrical Investigations of Hand-Held Scanning Systems

    Science.gov (United States)

    Kersten, T. P.; Przybilla, H.-J.; Lindstaedt, M.; Tschirschwitz, F.; Misgaiski-Hass, M.

    2016-06-01

    An increasing number of hand-held scanning systems by different manufacturers are becoming available on the market. However, their geometrical performance is little-known to many users. Therefore the Laboratory for Photogrammetry & Laser Scanning of the HafenCity University Hamburg has carried out geometrical accuracy tests with the following systems in co-operation with the Bochum University of Applied Sciences (Laboratory for Photogrammetry) as well as the Humboldt University in Berlin (Institute for Computer Science): DOTProduct DPI-7, Artec Spider, Mantis Vision F5 SR, Kinect v1 + v2, Structure Sensor and Google's Project Tango. In the framework of these comparative investigations geometrically stable reference bodies were used. The appropriate reference data were acquired by measurement with two structured light projection systems (AICON smartSCAN and GOM ATOS I 2M). The comprehensive test results of the different test scenarios are presented and critically discussed in this contribution.

  12. Hand-Held Devices Detect Explosives and Chemical Agents

    Science.gov (United States)

    2010-01-01

    Ion Applications Inc., of West Palm Beach, Florida, partnered with Ames Research Center through Small Business Innovation Research (SBIR) agreements to develop a miniature version ion mobility spectrometer (IMS). While NASA was interested in the instrument for detecting chemicals during exploration of distant planets, moons, and comets, the company has incorporated the technology into a commercial hand-held IMS device for use by the military and other public safety organizations. Capable of detecting and identifying molecules with part-per-billion sensitivity, the technology now provides soldiers with portable explosives and chemical warfare agent detection. The device is also being adapted for detecting drugs and is employed in industrial processes such as semiconductor manufacturing.

  13. Real time OCT-based angiography device with hand-held probe (Conference Presentation)

    Science.gov (United States)

    Moiseev, Alexander A.; Gelikonov, Grigory V.; Ksenofontov, Sergey Y.; Gelikonov, Valentin M.; Matveev, Lev A.; Zaitsev, Vladimir Y.; Matveev, Alexander L.; Sirotkina, Marina A.; Gladkova, Natalia D.; Vitkin, I. Alex

    2017-02-01

    This work is dedicated to development of the OCT system with angiography for everyday clinical use. Two major problems were solved during the development: compensation of specific tissue displacements, induced by contact scanning mode and physiological motion of patients (e.g. respiratory and cardiac motions) and on-line visualization of vessel net, to provide the feedback for system operator. The performance of the resulting OCT-based microangiography device with hand-held probe was evaluated by visualization of vessels nets of volunteers oral mucosa and skin on different locations (hands, face, abdomen etc.). Success-rate more than 90% was demonstrated during the experiments.

  14. [Intraoperative Measurement of Refraction with a Hand-Held Autorefractometer].

    Science.gov (United States)

    Gesser, C; Küper, T; Richard, G; Hassenstein, A

    2015-07-01

    The aim of this study was to evaluate an intraoperative measurement of objective refraction with a hand-held retinomax instrument. At the end of cataract surgery objective refraction in a lying position was measured with a retinomax instrument. On the first postoperative day the same measurement was performed with a retinomax and a standard autorefractometer. To evaluate the differences between measurements, the spherical equivalent (SE) and Jackson's cross cylinder at 0° (J0) and 45° (J45) was used. 103 eyes were included. 95 of them had normal cataract surgery. Differences between retinomax at the operative day and the standard autorefractometer were 0.68 ± 2.58 D in SE, 0.05 ± 1.4D in J0 and 0.05 ± 1.4D in J45. There were no statistically significant differences between the groups. Intraoperative measurement of the refraction with a retinomax can predict the postoperative refraction. Nevertheless, in a few patients great differences may occur. Georg Thieme Verlag KG Stuttgart · New York.

  15. Hand-held metal detector identification of ingested foreign bodies.

    Science.gov (United States)

    Sacchetti, A; Carraccio, C; Lichenstein, R

    1994-08-01

    The study purpose was to determine the ability of hand-held metal detectors (HHMDs) to identify the presence of ingested metallic foreign bodies (MFBs). Twenty-three children presenting to the emergency department with a complaint of MFBs ingested were enrolled. Sixteen of 23 patients had radiographically proven foreign bodies. The MFBs comprised coins (n = 11), a button battery (n = 1), a medallion (n = 1), a token (n = 1), a needle (n = 1), and a marble (leaded glass) (n = 1). The HHMD correctly detected 15 of 16 radiographically positive MFBs (93%) and correctly excluded a potential MFB in six of six radiographically negative cases. The only foreign body not detected was an ingested needle. One radiograph was equivocal. Radiographic localization of the ingested objects was as follows: esophagus, n = 4; stomach, n = 9; and intestines, n = 3. The HHMD correctly localized all detected MFBs. The HHMD had a sensitivity of 94%, a specificity of 100%, a positive predictive value of 100%, and a negative predictive value of 86%. HHMDs are effective screening devices for possible ingested MFBs. Positive studies localized to the stomach and lower gastrointestinal tract do not require confirmatory radiographic studies.

  16. Cordless hand-held optical 3D sensor

    Science.gov (United States)

    Munkelt, Christoph; Bräuer-Burchardt, Christian; Kühmstedt, Peter; Schmidt, Ingo; Notni, Gunther

    2007-07-01

    A new mobile optical 3D measurement system using phase correlation based fringe projection technique will be presented. The sensor consist of a digital projection unit and two cameras in a stereo arrangement, whereby both are battery powered. The data transfer to a base station will be done via WLAN. This gives the possibility to use the system in complicate, remote measurement situations, which are typical in archaeology and architecture. In the measurement procedure the sensor will be hand-held by the user, illuminating the object with a sequence of less than 10 fringe patterns, within a time below 200 ms. This short sequence duration was achieved by a new approach, which combines the epipolar constraint with robust phase correlation utilizing a pre-calibrated sensor head, containing two cameras and a digital fringe projector. Furthermore, the system can be utilized to acquire the all around shape of objects by using the phasogrammetric approach with virtual land marks introduced by the authors 1, 2. This way no matching procedures or markers are necessary for the registration of multiple views, which makes the system very flexible in accomplishing different measurement tasks. The realized measurement field is approx. 100 mm up to 400 mm in diameter. The mobile character makes the measurement system useful for a wide range of applications in arts, architecture, archaeology and criminology, which will be shown in the paper.

  17. RGB-D Hand-Held Ob ject Recognition Based on Heterogeneous Feature Fusion

    Institute of Scientific and Technical Information of China (English)

    吕雄; 蒋树强; 王双

    2015-01-01

    Ob ject recognition has many applications in human-machine interaction and multimedia retrieval. However, due to large intra-class variability and inter-class similarity, accurate recognition relying only on RGB data is still a big challenge. Recently, with the emergence of inexpensive RGB-D devices, this challenge can be better addressed by leveraging additional depth information. A very special yet important case of object recognition is hand-held object recognition, as manipulating objects with hands is common and intuitive in human-human and human-machine interactions. In this paper, we study this problem and introduce an effective framework to address it. This framework first detects and segments the hand-held ob ject by exploiting skeleton information combined with depth information. In the ob ject recognition stage, this work exploits heterogeneous features extracted from different modalities and fuses them to improve the recognition accuracy. In particular, we incorporate handcrafted and deep learned features and study several multi-step fusion variants. Experimental evaluations validate the effectiveness of the proposed method.

  18. Hand-Held Units for Short-Range Wireless Biotelemetry

    Science.gov (United States)

    Miranda, Felix A.; Simons, Rainee N.

    2008-01-01

    Special-purpose hand-held radiotransceiver units have been proposed as means of short-range radio powering and interrogation of surgically implanted microelectromechanical sensors and actuators. These units are based partly on the same principles as those of the units described in "Printed Multi- Turn Loop Antennas for RF Biotelemetry" (LEW-17879-1), NASA Tech Briefs, Vol. 31, No. 6 (June 2007), page 48. Like the previously reported units, these units would make it unnecessary to have wire connections between the implanted devices and the external equipment used to activate and interrogate them. Like a unit of the previously reported type, a unit of the type now proposed would include a printed-circuit antenna on a dielectric substrate. The antenna circuitry would include integrated surface-mount inductors for impedance tuning. Circuits for processing the signals transmitted and received by the antenna would be included on the substrate. During operation, the unit would be positioned near (but not in electrical contact with) a human subject, in proximity to a microelectromechanical sensor or actuator that has been surgically implanted in the subject. It has been demonstrated that significant electromagnetic coupling with an implanted device could be established at a distance of as much as 4 in. (.10 cm). During operation in the interrogation mode, the antenna of the unit would receive a radio telemetry signal transmitted by the surgically implanted device. The antenna substrate would have dimensions of approximately 3.25 by 3.75 inches (approximately 8.3 by 9.5 cm). The substrate would have a thickness of the order of 30 mils (of the order of a somewhat less than a millimeter). The substrate would be made of low-radiofrequency- loss dielectric material that could be, for example, fused quartz, alumina, or any of a number of commercially available radio-frequency dielectric composite materials. The antenna conductors would typically be made of copper or a

  19. Direction-Sensitive Hand-Held Gamma-Ray Spectrometer

    Energy Technology Data Exchange (ETDEWEB)

    Mukhopadhyay, S.

    2012-10-04

    A novel, light-weight, hand-held gamma-ray detector with directional sensitivity is being designed. The detector uses a set of multiple rings around two cylindrical surfaces, which provides precise location of two interaction points on two concentric cylindrical planes, wherefrom the source location can be traced back by back projection and/or Compton imaging technique. The detectors are 2.0 × 2.0 mm europium-doped strontium iodide (SrI2:Eu2+) crystals, whose light output has been measured to exceed 120,000 photons/MeV, making it one of the brightest scintillators in existence. The crystal’s energy resolution, less than 3% at 662 keV, is also excellent, and the response is highly linear over a wide range of gamma-ray energies. The emission of SrI2:Eu2+ is well matched to both photo-multiplier tubes and blue-enhanced silicon photodiodes. The solid-state photomultipliers used in this design (each 2.0 × 2.0 mm) are arrays of active pixel sensors (avalanche photodiodes driven beyond their breakdown voltage in reverse bias); each pixel acts as a binary photon detector, and their summed output is an analog representation of the total photon energy, while the individual pixel accurately defines the point of interaction. A simple back-projection algorithm involving cone-surface mapping is being modeled. The back projection for an event cone is a conical surface defining the possible location of the source. The cone axis is the straight line passing through the first and second interaction points.

  20. Accuracy and functionality of hand held wood moisture content meters

    Energy Technology Data Exchange (ETDEWEB)

    Forsen, H.; Tarvainen, V. [VTT Building Technology, Espoo (Finland). Building Materials and Products, Wood Technology

    2000-09-01

    The main task of VTT in this EU project was to test and improve the reliability and performance of moisture content meters. A total of 16 resistance type and 6 capacitance type hand-held moisture meters were included in the test series. Test samples of the most important European species (pine, spruce, birch, oak, beech, alder, larch) were obtained from all over Europe. The total survey included about 2,700 pieces for comparative testing. The test material was conditioned to three different moisture contents (8 - 10%, 12 - 14% and 16 - 18%). The moisture gradients in the test specimens were small due to the long conditioning time lasting at least 1 year. The effects of various factors, such as moisture content, species, and temperature, on the electrical resistance of conditioned wood were studied. In the laboratory tests, the resistance - moisture content curves for different species from different countries were determined using conditioned wood material. The species corrections (resistance curves) are quite similar for different counties. Only the resistance curve for Maritime Pine differs clearly from the other resistance curves for the pine species originating from the different countries. The wood temperature corrections are about 0.1 - 0.15% units/deg C which has to be considered when the moisture content of wood is measured at temperatures other than 20 deg C. The other properties of wood, such as sapwood/heartwood and density, do not have a significant effect on resistance values. There were no significant resistance differences related to the type of electrodes, distances between electrodes, and different measuring direction. The commercial instruments for the determination of wood moisture content were tested with respect to accuracy, reliability and ergonomy. The moisture meters were tested both under laboratory and industrial conditions. Most of the resistance meters show a systematic deviation from the actual moisture content because of incorrect MC

  1. Non-powered hand tool improvement research for prevention of work-related problems: a review.

    Science.gov (United States)

    Jain, Rahul; Sain, Manoj Kumar; Meena, Makkhan Lal; Dangayach, Govind Sharan; Bhardwaj, Awadhesh Kumar

    2017-03-28

    In lower-middle-income countries, most of the work is performed manually using non-ergonomic hand tools which results in work-related health problems. Using hand tools designed in line with ergonomic principles may play an important role in reducing work-related health concerns significantly. Scientific databases (PubMed, EBSCOhost) and e-publishers were searched for articles from 1985 to 2015 using the following keywords: 'hand tool', 'ergonomics', 'usability' and 'design'. After applying selection criteria to 614 articles, 58 articles related to the physical design of hand tools were selected. Seventeen articles were related to hand tool improvement in the manufacturing sector. Musculoskeletal disorders were found to be the most frequently occurring work-related health problems. Most of the articles focused on product and qualitative variables for improvement in hand tools, while few articles considered human and task variables. Literature shows that hand tool improvement studies have been given less importance in low-income and lower-middle-income countries. However, some work of significance is reported in the agriculture sectors of these countries. Hence, it is concluded that ergonomic intervention in hand tools is much needed for those industries which employ traditional methods of working.

  2. 75 FR 27504 - Substantial Product Hazard List: Hand-Held Hair Dryers

    Science.gov (United States)

    2010-05-17

    ... substantial product hazard.'' B. The Product A hand-held hair dryer is a portable electrical appliance with a..., electrically energized wires across which a fan blows air. These dryers are typically used in bathrooms...

  3. Automated Model To Save Energy In Hand Held Communication Devices During Natural Calamities

    Directory of Open Access Journals (Sweden)

    C.Rajanandhini

    2012-05-01

    Full Text Available In recent years mobile phone communication has become a part of humans life. Although technology advances there is a lack of communication during crisis, to overcome the crisis during natural calamities hand held communication plays vital role to save the life of peoples. This paper proposes ideas to save energy in hand held devices during natural calamities such as flood, earthquake, cyclone, etc. Recharging the batteries of hand held devices is a challenging job due to supply of electric current during that time, the role of service provider in maximizing the energy is much important than the individual role with the advancement of modern technology, the service provider can restrict the service utilisation of the individual such that GPS, GPRS and multimedia facilities of their hand held devices. This paper discusses ways to handle the energy efficiency by the service provider and user.

  4. Surgical guidance system using hand-held probe with accompanying positron coincidence detector

    Energy Technology Data Exchange (ETDEWEB)

    Majewski, Stanislaw; Weisenberger, Andrew G.

    2017-10-10

    A surgical guidance system offering different levels of imaging capability while maintaining the same hand-held convenient small size of light-weight intra-operative probes. The surgical guidance system includes a second detector, typically an imager, located behind the area of surgical interest to form a coincidence guidance system with the hand-held probe. This approach is focused on the detection of positron emitting biomarkers with gamma rays accompanying positron emissions from the radiolabeled nuclei.

  5. Hand-held water fluoride analysis: An accessible caries prevention tool for dental professionals.

    Science.gov (United States)

    Quock, Ryan L; Yank, Stephanie W; Chan, Jarvis T

    2011-01-01

    This study sought to compare the relative accuracy of a commercially available hand-held water fluoride analysis unit with a standard laboratory bench-top fluoride-specific electrode/millivoltmeter apparatus, with the goal of identifying possible practical applications of the hand-held unit for preventive dentistry. The units analyzed identical gravimetrically prepared fluoride solutions ranging from 0.1 to 4.0 ppm. The average difference between the measurements from the hand-held unit and the nominal values of the fluoride solutions was 0.011 ppm (SD = 0.068), and the average difference between the hand-held unit's measurements and the bench-top unit's measurements was 0.030 ppm (SD = 0.115). T-test analysis demonstrated no statistical difference between measurements from the hand-held unit with either the nominal values of the fluoride solutions or the bench-top unit's measurements. Results indicate that the hand-held water fluoride analysis unit has an appropriate level of accuracy for the measurement of fluoride levels in drinking water samples by dental professionals.

  6. Noise surveys of hand-held pneumatic rock drills in Hong Kong.

    Science.gov (United States)

    Tah-Chew, T; Keung, W C

    1991-10-01

    A study of the noise generated by hand-held pneumatic rock drills at 15 road works locations in Hong Kong was conducted in 1989. The locations of road construction works were identified over one week period. Sound pressure levels (SPL) and band frequency analysis were measured with the integrated sound level meter at the level of the operator's ears. The sound levels for all 15 operators exceeded the local statutory limit of 90 dBA. The average sound level was 107.4 dBA and the corresponding continuous equivalent level adjusted to 8 hours or L eq (8h) was 104.8 dBA. The sound levels for the octave frequencies from 125 Hertz to 8000 Hertz were all in excess of 90 dBA. Estimates of the risk of developing hearing impairment for conversation speech among the operators were 18% and 42% after 5 and 10 years of exposure, respectively. Although there is adequate statutory control to restrict and reduce the hazards caused by noise at road construction works to the workers and to the public at large, no noise control measures were noted at the work sites and none of the operators used hearing protection. This situation was compounded by the short-term nature of road works and the high mobility of the operators.

  7. Computer implemented method, and apparatus for controlling a hand-held tool

    Science.gov (United States)

    Wagner, Kenneth William (Inventor); Taylor, James Clayton (Inventor)

    1999-01-01

    The invention described here in is a computer-implemented method and apparatus for controlling a hand-held tool. In particular, the control of a hand held tool is for the purpose of controlling the speed of a fastener interface mechanism and the torque applied to fasteners by the fastener interface mechanism of the hand-held tool and monitoring the operating parameters of the tool. The control is embodied in intool software embedded on a processor within the tool which also communicates with remote software. An operator can run the tool, or through the interaction of both software, operate the tool from a remote location, analyze data from a performance history recorded by the tool, and select various torque and speed parameters for each fastener.

  8. Implementation of synthetic aperture imaging on a hand-held device

    DEFF Research Database (Denmark)

    Hemmsen, Martin Christian; Kjeldsen, Thomas; Larsen, Lee;

    2014-01-01

    This paper presents several implementations of Syn- thetic Aperture Sequential Beamforming (SASB) on commer- cially available hand-held devices. The implementations include real-time wireless reception of ultrasound radio frequency sig- nals and GPU processing for B-mode imaging. The proposed...... implementation demonstrates that SASB can be executed in-time for real-time ultrasound imaging. The wireless communication between probe and processing device satisfies the required bandwidth for real-time data transfer with current 802.11ac technology. The implementation is evaluated using four different hand-held...

  9. Hand-Held Model of a Sarcomere to Illustrate the Sliding Filament Mechanism in Muscle Contraction

    Science.gov (United States)

    Jittivadhna, Karnyupha; Ruenwongsa, Pintip; Panijpan, Bhinyo

    2009-01-01

    From our teaching of the contractile unit of the striated muscle, we have found limitations in using textbook illustrations of sarcomere structure and its related dynamic molecular physiological details. A hand-held model of a striated muscle sarcomere made from common items has thus been made by us to enhance students' understanding of the…

  10. Note: A hand-held high-Tc superconducting quantum interference device operating without shielding.

    Science.gov (United States)

    He, D F

    2011-02-01

    By improving the compensation circuit, a hand-held high-Tc rf superconducting quantum interference devices (SQUID) system was developed. It could operate well when moving in unshielded environment. To check the operation, it was used to do eddy-current testing by hand moving the SQUID, and the artificial defect under 6 mm aluminum plate could be successfully detected in shielded environment.

  11. Surgical procedure logging with use of a hand-held computer.

    Science.gov (United States)

    Fischer, Sandra; Lapinsky, Stephen E; Weshler, Jason; Howard, Frazer; Rotstein, Lorne E; Cohen, Zane; Stewart, Thomas E

    2002-10-01

    To evaluate the feasibility of incorporating hand-held computing technology in a surgical residency program, by means of hand-held devices for surgical procedure logging linked through the Internet to a central database. Division of General Surgery, University of Toronto. A survey of general surgery residents. The 69 residents in the general surgery training program received hand-held computers with preinstalled medical programs and a program designed for surgical procedure logging. Procedural data were uploaded via the Internet to a central database. Survey data were collected regarding previous computer use as well as previous procedure logging methods. Utilization of the procedure logging system. After a 5-month pilot period, 38% of surgical residents were using the procedure-logging program successfully and on a regular basis. Program use was higher among more junior trainees. Analysis of the database provided valuable information on individual trainees, hospital programs and supervising surgeons, data that would assist in program development. Hand-held devices can be implemented in a large division of general surgery to provide a reference database and a procedure-logging platform. However, user acceptance is not uniform and continued training and support are necessary to increase acceptance. The procedure database provides important information for optimizing trainees' educational experience.

  12. Hand-Held Model of a Sarcomere to Illustrate the Sliding Filament Mechanism in Muscle Contraction

    Science.gov (United States)

    Jittivadhna, Karnyupha; Ruenwongsa, Pintip; Panijpan, Bhinyo

    2009-01-01

    From our teaching of the contractile unit of the striated muscle, we have found limitations in using textbook illustrations of sarcomere structure and its related dynamic molecular physiological details. A hand-held model of a striated muscle sarcomere made from common items has thus been made by us to enhance students' understanding of the…

  13. Integrating a hand held computer and stethoscope into a fetal monitor.

    Science.gov (United States)

    Soltani, Mitra Ahmad

    2009-02-07

    This article presents procedures for modifying a hand held computer or personal digital assistant (PDA) into a versatile device functioning as an electronic stethoscope for fetal monitoring. Along with functioning as an electronic stethoscope, a PDA can provide a useful information source for a medical trainee. Feedback from medical students, residents and interns suggests the device is well accepted by medical trainees.

  14. Clinical assessment of hip strength using a hand-held dynamometer is reliable

    DEFF Research Database (Denmark)

    Thorborg, K; Petersen, J; Magnusson, S P;

    2010-01-01

    rotation (ER), internal rotation (IR), flexion (FLEX) and extension (EXT) using a hand-held dynamometer. Nine subjects (five males, four females), physically active for at least 2.5 h a week, were included. Twelve standardized isometric strength tests were performed twice with a 1-week interval in between...

  15. Online Responses towards Parental Rearing Styles Regarding Hand-Held Devices

    Science.gov (United States)

    Geng, Gretchen; Disney, Leigh

    2014-01-01

    This article reviewed the literature on parental rearing styles and used responses from an online discussion forum to investigate people's opinions towards parental rearing styles and strategies when children use hand-held devices. Critical discourse analysis (CDA) was used as an analysis method via micro, meso and macro multi-level…

  16. Left ventricular hypertrophy screening using a hand-held ultrasound device

    NARCIS (Netherlands)

    E.C. Vourvouri (Eleni); D. Poldermans (Don); A.F.L. Schinkel (Arend); L.Y. Koroleva; F. Sozzi (Fabiola); G.E. Parharidis; J.J. Bax (Jeroen); J.R.T.C. Roelandt (Jos)

    2002-01-01

    textabstractAIMS: To test the diagnostic potential of a hand-held ultrasound device for screening for left ventricular hypertrophy in a hypertensive population using a standard echocardiographic system as a reference. METHODS: One hundred consecutive hypertensive patients were enro

  17. 75 FR 32803 - Notice of Issuance of Final Determination Concerning a GTX Mobile+ Hand Held Computer

    Science.gov (United States)

    2010-06-09

    ... SECURITY U.S. Customs and Border Protection Notice of Issuance of Final Determination Concerning a GTX Mobile+ Hand Held Computer AGENCY: U.S. Customs and Border Protection, Department of Homeland Security...; (d) security software for the device, (e) Fortress Technologies Secure Client security software;...

  18. Environmentally Benign Energetic Time Delay Compositions: Alternatives for the U.S. Army Hand-Held Signal

    Science.gov (United States)

    2014-07-13

    2014, pp 305-314 305 Environmentally Benign Energetic Time Delay Compositions: Alternatives for the U.S. Army Hand- Held Signal Jay C. Poret...munitions such as hand grenades and signaling devices. For example, U.S. Army hand- held signals (HHS) use a pyrotechnic delay element to properly time...compositions for use in the U.S. Army hand- held signal. The large thermal mass of the HHS delay housing, combined with the long burning time requirement

  19. Analysis of accuracy in pointing with redundant hand-held tools: a geometric approach to the uncontrolled manifold method.

    Science.gov (United States)

    Campolo, Domenico; Widjaja, Ferdinan; Xu, Hong; Ang, Wei Tech; Burdet, Etienne

    2013-04-01

    This work introduces a coordinate-independent method to analyse movement variability of tasks performed with hand-held tools, such as a pen or a surgical scalpel. We extend the classical uncontrolled manifold (UCM) approach by exploiting the geometry of rigid body motions, used to describe tool configurations. In particular, we analyse variability during a static pointing task with a hand-held tool, where subjects are asked to keep the tool tip in steady contact with another object. In this case the tool is redundant with respect to the task, as subjects control position/orientation of the tool, i.e. 6 degrees-of-freedom (dof), to maintain the tool tip position (3dof) steady. To test the new method, subjects performed a pointing task with and without arm support. The additional dof introduced in the unsupported condition, injecting more variability into the system, represented a resource to minimise variability in the task space via coordinated motion. The results show that all of the seven subjects channeled more variability along directions not directly affecting the task (UCM), consistent with previous literature but now shown in a coordinate-independent way. Variability in the unsupported condition was only slightly larger at the endpoint but much larger in the UCM.

  20. Hand-held probe based optical imaging system towards breast cancer diagnosis

    Science.gov (United States)

    Ge, Jiajia; Jayachandran, Bhavani; Regalado, Steven; Zhu, Banghe; Godavarty, Anuradha

    2007-02-01

    Near-infrared (NIR) optical imaging is an emerging noninvasive modality for breast cancer diagnosis. However, the currently available optical imaging systems towards tomography studies are limited either by instrument portability, patient comfort, or flexibility to image any given tissue volume. Herein, a hand-held based optical imaging system is developed such that it can possibly overcome some of the above limitations. The unique features of the hand-held optical probe are: (i) to perform simultaneous multiple point illumination and detection, thus decreasing the total imaging time and improving the overall signal strength; (ii) to adapt to the contour of tissue surface, thus decreasing the leakage of excitation and emission signal at contact surface; and (iii) to obtain trans-illumination measurements apart from reflectance measurements, thus improving the depth information. The increased detected signal strength as well as total interrogated tissue volume is demonstrated by simulation studies (i.e. forward model) over a 5×10×10 cc slab phantom. The appropriate number and layout of the source and detection points on the probe head is determined and the hand-held optical probe is developed. A frequency-domain ICCD (intensified charge coupled device) detection system, which allows simultaneous multiple points detection, is developed and coupled to the hand-held probe in order to perform fluorescence-enhanced optical imaging of tissue phantoms. In the future, imaging of homogenous liquid phantoms will be used for the assessment of this hand-held system, followed by extensive imaging studies on different phantoms types under various experimental conditions.

  1. 78 FR 20695 - Walk-Through Metal Detectors and Hand-Held Metal Detectors Test Method Validation

    Science.gov (United States)

    2013-04-05

    ... Office of Justice Programs Walk-Through Metal Detectors and Hand-Held Metal Detectors Test Method... detectors and hand-held metal detectors. In order to ensure that the test methods in the standards are... efforts from testing laboratories. NIJ is also seeking the participation of metal detector...

  2. Modeling movements of a long hand-held tool with effects of moments of inertia.

    Science.gov (United States)

    Lin, Chiuhsiang Joe; Chen, Hung-Jen

    2014-04-01

    The current experiment aimed to investigate the effects of weight position on movement time in target acquisition tasks. Subsequently, a simple mathematical model was developed to describe the movement time with the moments of inertia. Ten right-handed participants conducted continuous Fitts pointing tasks using a laparoscopic instrument as a long hand-held tool. The results showed significant effects of weight position on movement time. Furthermore, an extended Fitts' law model is proposed for the moments of inertia produced by the hand, instrument, and a constant mass in different positions. This predictive model accounted for 63% of the variance in movement time. The predictive model proposed in the present study can be applied not only to estimate movement time given a particular target width, instrument movement amplitude, and weight position of a long hand-held tool but also to standardize movement time and establish training standards.

  3. Hand-held cow horn: Resurgence of an old arm or a potential terrorist weapon

    Directory of Open Access Journals (Sweden)

    Lawal Khalid

    2012-01-01

    Full Text Available A 23 year old man presented with intestinal evisceration from stab injury to the left side of the abdomen with a hand-held cow horn at a local night party. He complained of severe abdominal pain and bleeding at the site of injury. He was hemodynamically stable. At emergency exploration, the eviscerated bowel was viable with no adjacent mesenteric tear. Other intra abdominal organs were normal. The eviscerated bowel was lavaged and reduced into the abdomen through the 7cm anterior abdominal wall laceration. The laceration was repaired and abdomen closed in layers. Post operative recovery was uneventful. The hand-held cow horn can easily be concealed and may pass through security checks undetected. It should be added to the ever increasing list of weapons of small scale terror.

  4. Hand-held cow horn: resurgence of an old arm or apotential terrorist weapon

    Science.gov (United States)

    Khalid, Lawal; Ahmed, Adamu

    2012-01-01

    Abstract: A 23 year old man presented with intestinal evisceration from stab injury to the left side of the abdomen with a hand-held cow horn at a local night party. He complained of severe abdominal pain and bleeding at the site of injury. He was hemodynamically stable. At emergency exploration, the eviscerated bowel was viable with no adjacent mesenteric tear. Other intra abdominal organs were normal. The eviscerated bowel was lavaged and reduced into the abdomen through the 7cm anterior abdominal wall laceration. The laceration was repaired and abdomen closed in layers. Post operative recovery was uneventful. The hand-held cow horn can easily be concealed and may pass through security checks undetected. It should be added to the ever increasing list of weapons of small scale terror. PMID:21502787

  5. Hand-held internet tablets for school-based data collection

    Directory of Open Access Journals (Sweden)

    Merry Sally N

    2008-07-01

    Full Text Available Abstract Background In the last 20 years, researchers have been using computer self-administered questionnaires to gather data on a wide range of adolescent health related behaviours. More recently, researchers collecting data in schools have started to use smaller hand-held computers for their ease of use and portability. The aim of this study is to describe a new technology with wi-fi enabled hand-held internet tablets and to compare adolescent preferences of laptop computers or hand-held internet tablets in administering a youth health and well-being questionnaire in a school setting. Methods A total of 177 students took part in a pilot study of a national youth health and wellbeing survey. Students were randomly assigned to internet tablets or laptops at the start of the survey and were changed to the alternate mode of administration about half-way through the questionnaire. Students at the end of the questionnaire were asked which of the two modes of administration (1 they preferred, (2 was easier to use, (3 was more private and confidential, and (4 was easier to answer truthfully. Results Many students expressed no preference between laptop computers or internet tablets. However, among the students who expressed a preference between laptop computers or internet tablets, the majority of students found the internet tablets more private and confidential (p Conclusion This study demonstrates that using wi-fi enabled hand-held internet tablets is a feasible methodology for school-based surveys especially when asking about sensitive information.

  6. Long-Wavelength 256 x 256 QWIP Hand-Held Camera

    Science.gov (United States)

    Gunapala, S. D.; Liu, J. K.; Sundaram, M.; Bandara, S. V.; Shott, C. A.; Hoelter, T.; Maker, P. D.; Muller, R. E.

    1996-01-01

    In this paper, we discuss the development of very sensitive long wavelength infrared (LWIR) GaAs/Al(x)Ga(l-x)As quantum well infrared photodetectors (QWIPs), fabrication of random reflectors for efficient light coupling, and the demonstration of the first hand-held long-wavelength 256 x 256 QWIP focal plane array camera. Excellent imagery, with a noise equivalent differential temperature (NE Delta T) of 25 mK has been achieved.

  7. Hand-held tidal breathing nasal nitric oxide measurement--a promising targeted case-finding tool for the diagnosis of primary ciliary dyskinesia.

    Directory of Open Access Journals (Sweden)

    June Kehlet Marthin

    Full Text Available BACKGROUND: Nasal nitric oxide (nNO measurement is an established first line test in the work-up for primary ciliary dyskinesia (PCD. Tidal breathing nNO (TB-nNO measurements require minimal cooperation and are potentially useful even in young children. Hand-held NO devices are becoming increasingly widespread for asthma management. Therefore, we chose to assess whether hand-held TB-nNO measurements reliably discriminate between PCD, and Healthy Subjects (HS and included Cystic Fibrosis (CF patients as a disease control group known to have intermediate nNO levels. METHODS: In this cross sectional, single centre, single occasion, proof-of-concept study in children and adults with PCD and CF, and in HS we compared feasibility, success rates, discriminatory capacity, repeatability and agreement between a hand-held electrochemical device equipped with a nNO software application sampling at flow rates 2 ml/s or 5 ml/s, and two stationary chemiluminescence devices, applying both tidal breathing and velum closure techniques. RESULTS: Measurements were done in 16 PCD patients, 21 patients with CF and 20 HS aged between 3.8 and 60.9 years. Hand-held TB-nNO showed high success rate (96.5-100% vs. velum closure nNO techniques (70.2-89.5%. Hand-held TB-nNO sampling at flow rate 5 ml/s showed equally high discriminative power (PCD vs. HS [p<0.0001] and PCD vs. CF [p<0.0001] and reaching close to 100% sensitivity and specificity, superior repeatability (CV% = 10% and equal limits of agreement compared to TB-nNO by stationary devices and even compared to velum closure sampling. CONCLUSION: Hand-held TB-nNO discriminates significantly between PCD, CF and HS and shows promising potential as a widespread targeted case-finding tool for PCD, although further studies are warranted before implementation.

  8. Hand-held optical imager (Gen-2): improved instrumentation and target detectability.

    Science.gov (United States)

    Gonzalez, Jean; Decerce, Joseph; Erickson, Sarah J; Martinez, Sergio L; Nunez, Annie; Roman, Manuela; Traub, Barbara; Flores, Cecilia A; Roberts, Seigbeh M; Hernandez, Estrella; Aguirre, Wenceslao; Kiszonas, Richard; Godavarty, Anuradha

    2012-08-01

    Hand-held optical imagers are developed by various researchers towards reflectance-based spectroscopic imaging of breast cancer. Recently, a Gen-1 handheld optical imager was developed with capabilities to perform two-dimensional (2-D) spectroscopic as well as three-dimensional (3-D) tomographic imaging studies. However, the imager was bulky with poor surface contact (~30%) along curved tissues, and limited sensitivity to detect targets consistently. Herein, a Gen-2 hand-held optical imager that overcame the above limitations of the Gen-1 imager has been developed and the instrumentation described. The Gen-2 hand-held imager is less bulky, portable, and has improved surface contact (~86%) on curved tissues. Additionally, the forked probe head design is capable of simultaneous bilateral reflectance imaging of both breast tissues, and also transillumination imaging of a single breast tissue. Experimental studies were performed on tissue phantoms to demonstrate the improved sensitivity in detecting targets using the Gen-2 imager. The improved instrumentation of the Gen-2 imager allowed detection of targets independent of their location with respect to the illumination points, unlike in Gen-1 imager. The developed imager has potential for future clinical breast imaging with enhanced sensitivity, via both reflectance and transillumination imaging.

  9. The reliability and validity of hand-held refractometry water content measures of hydrogel lenses.

    Science.gov (United States)

    Nichols, Jason J; Mitchell, G Lynn; Good, Gregory W

    2003-06-01

    To investigate within- and between-examiner reliability and validity of hand-held refractometry water content measures of hydrogel lenses. Nineteen lenses of various nominal water contents were examined by two examiners on two occasions separated by 1 hour. An Atago N2 hand-held refractometer was used for all water content measures. Lenses were presented in a random order to each examiner by a third party, and examiners were masked to any potential lens identifiers. Intraclass correlation coefficients (ICC), 95% limits of agreement, and Wilcoxon signed rank test were used to characterize the within- and between-examiner reliability and validity of lens water content measures. Within-examiner reliability was excellent (ICC, 0.97; 95% limits of agreement, -3.6% to +5.7%), and the inter-visit mean difference of 1.1 +/- 2.4% was not biased (p = 0.08). Between-examiner reliability was also excellent (ICC, 0.98; 95% limits of agreement, -4.1% to +3.9%). The mean difference between examiners was -0.1 +/- 2.1% (p = 0.83). The mean difference between the nominally reported water content and our water content measures was -2.1 +/- 1.7% (p refractometry and is material dependent. Therefore, investigators may need to account for bias when measuring hydrogel lens water content via hand-held refractometry.

  10. Gen-2 hand-held optical imager towards cancer imaging: reflectance and transillumination phantom studies.

    Science.gov (United States)

    Gonzalez, Jean; Roman, Manuela; Hall, Michael; Godavarty, Anuradha

    2012-01-01

    Hand-held near-infrared (NIR) optical imagers are developed by various researchers towards non-invasive clinical breast imaging. Unlike these existing imagers that can perform only reflectance imaging, a generation-2 (Gen-2) hand-held optical imager has been recently developed to perform both reflectance and transillumination imaging. The unique forked design of the hand-held probe head(s) allows for reflectance imaging (as in ultrasound) and transillumination or compressed imaging (as in X-ray mammography). Phantom studies were performed to demonstrate two-dimensional (2D) target detection via reflectance and transillumination imaging at various target depths (1-5 cm deep) and using simultaneous multiple point illumination approach. It was observed that 0.45 cc targets were detected up to 5 cm deep during transillumination, but limited to 2.5 cm deep during reflectance imaging. Additionally, implementing appropriate data post-processing techniques along with a polynomial fitting approach, to plot 2D surface contours of the detected signal, yields distinct target detectability and localization. The ability of the gen-2 imager to perform both reflectance and transillumination imaging allows its direct comparison to ultrasound and X-ray mammography results, respectively, in future clinical breast imaging studies.

  11. Hand-held tidal breathing nasal nitric oxide measurement--a promising targeted case-finding tool for the diagnosis of primary ciliary dyskinesia

    DEFF Research Database (Denmark)

    Marthin, June Kehlet; Nielsen, Kim Gjerum

    2013-01-01

    BACKGROUND: Nasal nitric oxide (nNO) measurement is an established first line test in the work-up for primary ciliary dyskinesia (PCD). Tidal breathing nNO (TB-nNO) measurements require minimal cooperation and are potentially useful even in young children. Hand-held NO devices are becoming...... at flow rates 2 ml/s or 5 ml/s, and two stationary chemiluminescence devices, applying both tidal breathing and velum closure techniques. RESULTS: Measurements were done in 16 PCD patients, 21 patients with CF and 20 HS aged between 3.8 and 60.9 years. Hand-held TB-nNO showed high success rate (96...

  12. A hand-held ultrasound machine vs. conventional ultrasound machine in the bedside assessment of post-liver transplant patients.

    Science.gov (United States)

    Trinquart, Ludovic; Bruno, Onorina; Angeli, Maria Luigia; Belghiti, Jacques; Chatellier, Gilles; Vilgrain, Valérie

    2009-10-01

    The purpose was to assess the diagnostic accuracy of a hand-held Doppler ultrasound (US) machine for the bedside detection of liver and vascular abnormalities after liver transplantation in the intensive care unit. The IRB approved this study, and written informed consent was obtained from all patients or the patient's legal representative. Any liver transplant recipient at our institution who needed a bedside Doppler US examination in the intensive care unit was eligible. Patients underwent routine grey-scale, colour, and spectral Doppler US examinations of the liver with a conventional machine, which was taken as the reference method, and with a hand-held machine on the same day. Examinations followed one another and were performed in a blinded fashion by two radiologists. Over a 4-month period, 24 consecutive patients (16 men, median age 54 years old; 16 cadaveric and 8 living related right liver transplantations) underwent 43 examinations with both conventional and hand-held machines. Image quality and overall satisfaction scores of grey-scale were lower with the hand-held than with the conventional machine. The hand-held was similar to the conventional machine for assessing the patency of portal veins, hepatic veins and the IVC in all patients but one. The hand-held machine failed to detect signals in the right branch of the hepatic artery and in the hilum in two and one cases, respectively. There was no abnormal hepatic arterial flow with the conventional machine in any of the patients, and the results were the same with the hand-held machine. Total examination time was significantly longer with the hand-held machine. The hand-held US machine had a high diagnostic accuracy for both parenchymal and vascular analyses compared with a conventional US machine in the bedside assessment of post-liver transplant patients.

  13. Potential role of a new hand-held miniature gamma camera in performing minimally invasive parathyroidectomy

    Energy Technology Data Exchange (ETDEWEB)

    Ortega, Joaquin; Lledo, Salvador [University of Valencia, Clinic University Hospital, Department of Surgery, Valencia (Spain); Ferrer-Rebolleda, Jose [Clinic University Hospital, Department of Nuclear Medicine, Valencia (Spain); Cassinello, Norberto [Clinic University Hospital, Unit of Endocrinologic and Bariatric Surgery, Valencia (Spain)

    2007-02-15

    Sestamibi scans have increased the use of minimally invasive parathyroidectomy (MIP) to treat primary hyperparathyroidism (PHPT) when caused by a parathyroid single adenoma. The greatest concern for surgeons remains the proper identification of pathological glands in a limited surgical field. We have studied the usefulness of a new hand-held miniature gamma camera (MGC) when used intraoperatively to locate parathyroid adenomas. To our knowledge this is the first report published on this subject in the scientific literature. Five patients with PHPT secondary to a single adenoma, positively diagnosed by preoperative sestamibi scans, underwent a MIP. A gamma probe for radioguided surgery and the new hand-held MGC were used consecutively to locate the pathological glands. This new MGC has a module composed of a high-resolution interchangeable collimator and a CsI(Na) scintillating crystal. It has dimensions of around 15 cm x 8 cm x 9 cm and weighs 1 kg. The intraoperative assay of PTH (ioPTH) was used to confirm the complete resection of pathological tissue. All cases were operated on successfully by a MIP. The ioPTH confirmed the excision of all pathological tissues. The MGC proved its usefulness in all patients, even in a difficult case in which the first attempt with the gamma probe failed. In all cases it offered real-time accurate intraoperative images. The hand-held MGC is a useful instrument in MIP for PHPT. It may be used to complement the standard tools used to date, or may even replace them, at least in selected cases of single adenomas. (orig.)

  14. Sensitive SERS nanotags for use with a hand-held 1064 nm Raman spectrometer

    Science.gov (United States)

    Kearns, Hayleigh; Ali, Fatima; Bedics, Matthew A.; Shand, Neil C.; Faulds, Karen; Detty, Michael R.; Graham, Duncan

    2017-07-01

    This is the first report of the use of a hand-held 1064 nm Raman spectrometer combined with red-shifted surface-enhanced Raman scattering (SERS) nanotags to provide an unprecedented performance in the short-wave infrared (SWIR) region. A library consisting of 17 chalcogenopyrylium nanotags produce extraordinary SERS responses with femtomolar detection limits being obtained using the portable instrument. This is well beyond previous SERS detection limits at this far red-shifted wavelength and opens up new options for SERS sensors in the SWIR region of the electromagnetic spectrum (between 950 and 1700 nm).

  15. Analysis of Information Remaining on Hand Held Devices Offered for Sale on the Second Hand Market

    OpenAIRE

    Andy Jones; Craig Valli; Iain Sutherland

    2008-01-01

    The ownership and use of mobile phones, Personal Digital Assistants and other hand held devices is now ubiquitous both for home and business use. The majority of these devices have a high initial cost, a relatively short period before they become obsolescent and a relatively low second hand value.  As a result of this, when the devices are replaced, there are indications that they tend to be discarded.  As technology has continued to develop, it has led to an increasing diversity in the num...

  16. Hand-Held Dynamometry Isometric Torque Reference Values for Children and Adolescents

    OpenAIRE

    Hébert, Luc J.; Maltais, Désirée B.; Lepage, Céline; Saulnier, Joanne; Crête, Mélanie

    2015-01-01

    Purpose: To establish hand-held dynamometry (HHD) maximal isometric muscle torque (MIT) reference values for children and adolescents who are developing typically. Methods: The MIT of 10 upper and lower limb muscle groups was assessed in 351 Caucasian youth (4 years 2 months to 17 years) using a standardized HHD protocol, previously shown to be feasible, valid, and reliable. Results: The mean MIT and 95% confidence interval of the mean for all muscle groups, for each of the 14 age groups (1 y...

  17. Algorithms for a hand-held miniature x-ray fluorescence analytical instrument

    Energy Technology Data Exchange (ETDEWEB)

    Elam, W.T.; Newman, D.; Ziemba, F. [and others

    1998-12-31

    The purpose of this joint program was to provide technical assistance with the development of a Miniature X-ray Fluorescence (XRF) Analytical Instrument. This new XRF instrument is designed to overcome the weaknesses of spectrometers commercially available at the present time. Currently available XRF spectrometers (for a complete list see reference 1) convert spectral information to sample composition using the influence coefficients technique or the fundamental parameters method. They require either a standard sample with composition relatively close to the unknown or a detailed knowledge of the sample matrix. They also require a highly-trained operator and the results often depend on the capabilities of the operator. In addition, almost all existing field-portable, hand-held instruments use radioactive sources for excitation. Regulatory limits on such sources restrict them such that they can only provide relatively weak excitation. This limits all current hand-held XRF instruments to poor detection limits and/or long data collection times, in addition to the licensing requirements and disposal problems for radioactive sources. The new XRF instrument was developed jointly by Quantrad Sensor, Inc., the Naval Research Laboratory (NRL), and the Department of Energy (DOE). This report describes the analysis algorithms developed by NRL for the new instrument and the software which embodies them.

  18. Smartphone based hand-held quantitative phase microscope using the transport of intensity equation method.

    Science.gov (United States)

    Meng, Xin; Huang, Huachuan; Yan, Keding; Tian, Xiaolin; Yu, Wei; Cui, Haoyang; Kong, Yan; Xue, Liang; Liu, Cheng; Wang, Shouyu

    2016-12-20

    In order to realize high contrast imaging with portable devices for potential mobile healthcare, we demonstrate a hand-held smartphone based quantitative phase microscope using the transport of intensity equation method. With a cost-effective illumination source and compact microscope system, multi-focal images of samples can be captured by the smartphone's camera via manual focusing. Phase retrieval is performed using a self-developed Android application, which calculates sample phases from multi-plane intensities via solving the Poisson equation. We test the portable microscope using a random phase plate with known phases, and to further demonstrate its performance, a red blood cell smear, a Pap smear and monocot root and broad bean epidermis sections are also successfully imaged. Considering its advantages as an accurate, high-contrast, cost-effective and field-portable device, the smartphone based hand-held quantitative phase microscope is a promising tool which can be adopted in the future in remote healthcare and medical diagnosis.

  19. Fluorescence-enhanced imaging using a novel hand-held based optical imager: phantom studies

    Science.gov (United States)

    Ge, Jiajia; Zhu, Banghe; Regalado, Steven; Godavarty, Anuradha

    2008-02-01

    Near-infrared (NIR) optical imaging is an emerging noninvasive modality for breast cancer diagnosis. The currently available optical imaging systems towards tomography studies are limited either by instrument portability, patient comfort, or flexibility to image any given tissue volume. Hence, a novel hand-held probe based gain modulated intensified CCD camera imaging system is developed such that it can possibly overcome some of the above limitations. The unique features of this hand-held probe based optical imaging system are: (i) to perform simultaneous multiple point illumination and detection, thus decreasing the total imaging time and improving overall signal strength; (ii) to adapt to the tissue contours, thus decreasing the light leakage at contact surface; and (iii) to obtain trans-illumination measurements apart from reflectance measurements, thus improving the depth information. Phantom studies are performed to demonstrate the feasibility of performing fluorescence optical imaging under different target depths using cubical phantoms (10×6.5×10 cc). The effect of simultaneous multiple point illumination over sequential single point illumination is demonstrated from experimental phantom studies.

  20. Curvelet filter based prescreener for explosive hazard detection in hand-held ground penetrating radar

    Science.gov (United States)

    White, Julie L.; Anderson, Derek T.; Ball, John E.; Parker, Brian

    2016-05-01

    Explosive hazards, above and below ground, are a serious threat to civilians and soldiers. In an attempt to mitigate these threats, different forms of explosive hazard detection (EHD) exist; e.g., multi-sensor hand-held platforms, downward looking and forward looking vehicle mounted platforms, etc. Robust detection of these threats resides in the processing and fusion of different data from multiple sensing modalities, e.g., radar, infrared, electromagnetic induction (EMI), etc. Herein, we focus on a new energy-based prescreener in hand-held ground penetrating radar (GPR). First, we Curvelet filter B-scan signal data using either Reverse-Reconstruction followed by Enhancement (RRE) or selectivity with respect to wedge information in the Curvelet transform. Next, we aggregate the result of a bank of matched filters and run a size contrast filter with Bhattacharyya distance. Alarms are then combined using weighted mean shift clustering. Results are demonstrated in the context of receiver operating characteristics (ROC) curve performance on data from a U. S. Army test site that contains multiple target and clutter types, burial depths and times of the day.

  1. Sensor-Based Technique for Manually Scanned Hand-Held Optical Coherence Tomography Imaging

    Directory of Open Access Journals (Sweden)

    Paritosh Pande

    2016-01-01

    Full Text Available Hand-held optical coherence tomography (OCT imaging probes offer flexibility to image sites that are otherwise challenging to access. While the majority of hand-held imaging probes utilize galvanometer- or MEMS-scanning mirrors to transversely scan the imaging beam, these probes are commonly limited to lateral fields-of-view (FOV of only a few millimeters. The use of a freehand manually scanned probe can significantly increase the lateral FOV. However, using the traditional fixed-rate triggering scheme for data acquisition in a manually scanned probe results in imaging artifacts due to variations in the scan velocity of the imaging probe. These artifacts result in a structurally inaccurate image of the sample. In this paper, we present a sensor-based manual scanning technique for OCT imaging, where real-time feedback from an optical motion sensor is used to trigger data acquisition. This technique is able to circumvent the problem of motion artifacts during manual scanning by adaptively altering the trigger rate based on the instantaneous scan velocity, enabling OCT imaging over a large lateral FOV. The feasibility of the proposed technique is demonstrated by imaging several biological and nonbiological samples.

  2. Finger tracking for hand-held device interface using profile-matching stereo vision

    Science.gov (United States)

    Chang, Yung-Ping; Lee, Dah-Jye; Moore, Jason; Desai, Alok; Tippetts, Beau

    2013-01-01

    Hundreds of millions of people use hand-held devices frequently and control them by touching the screen with their fingers. If this method of operation is being used by people who are driving, the probability of deaths and accidents occurring substantially increases. With a non-contact control interface, people do not need to touch the screen. As a result, people will not need to pay as much attention to their phones and thus drive more safely than they would otherwise. This interface can be achieved with real-time stereovision. A novel Intensity Profile Shape-Matching Algorithm is able to obtain 3-D information from a pair of stereo images in real time. While this algorithm does have a trade-off between accuracy and processing speed, the result of this algorithm proves the accuracy is sufficient for the practical use of recognizing human poses and finger movement tracking. By choosing an interval of disparity, an object at a certain distance range can be segmented. In other words, we detect the object by its distance to the cameras. The advantage of this profile shape-matching algorithm is that detection of correspondences relies on the shape of profile and not on intensity values, which are subjected to lighting variations. Based on the resulting 3-D information, the movement of fingers in space from a specific distance can be determined. Finger location and movement can then be analyzed for non-contact control of hand-held devices.

  3. Analysis of Information Remaining on Hand Held Devices Offered for Sale on the Second Hand Market

    Directory of Open Access Journals (Sweden)

    Andy Jones

    2008-06-01

    Full Text Available The ownership and use of mobile phones, Personal Digital Assistants and other hand held devices is now ubiquitous both for home and business use. The majority of these devices have a high initial cost, a relatively short period before they become obsolescent and a relatively low second hand value.  As a result of this, when the devices are replaced, there are indications that they tend to be discarded.  As technology has continued to develop, it has led to an increasing diversity in the number and type of devices that are available, and the processing power and the storage capacity of the digital storage in the device. All organisations, whether in the public or private sector increasingly use hand held devices that contain digital media for the storage of information relating to their business, their employees or their customers. Similarly, individual private users increasingly use hand held devices containing digital media for the storage of information relating to their private lives.The research revealed that a significant number of organisations and private users are ignorant or misinformed about the volume and type of information that is stored on the hand held devices and the media on which it is stored.  It is apparent that they have either not considered, or are unaware of, the potential impact of this information becoming available to their competitors or those with criminal intent.This main purpose of this study was to gain an understanding of the volume and type of information that may remain on hand held devices that are offered for sale on the second hand market.  A second aim of the research was to determine the level of damage that could, potentially be caused, if the information that remains on the devices fell into the wrong hands.  The study examined a number of hand held devices that had been obtained from sources in the UK and Australia that ranged from internet auction sites, to private sales and commercial

  4. Cost effective spectral sensor solutions for hand held and field applications

    Science.gov (United States)

    Reetz, Edgar; Correns, Martin; Notni, Gunther

    2015-05-01

    Optical spectroscopy is without doubt one of the most important non-contact measurement principles. It is used in a wide range of applications from bio-medical to industrial fields. One recent trend is to miniaturize spectral sensors to address new areas of application. The most common spectral sensor type is based on diffraction gratings, while other types are based on micro mechanical systems (MEMS) or filter technologies. The authors represent the opinion that there is a potentially wide spread field of applications for spectrometers, but the market limits the range of applications since they cannot keep up with targeted cost requirements for consumer products. The present article explains an alternative approach for miniature multichannel spectrometer to enhance robustness for hand held field applications at a cost efficient price point.

  5. A hand-held 3D laser scanning with global positioning system of subvoxel precision

    Energy Technology Data Exchange (ETDEWEB)

    Arias, Nestor [GOM, Departamento de Fisica y Geologia, Universidad de Pamplona (Colombia); Meneses, Nestor; Meneses, Jaime [GOTS-CENM, Escuela de Fisica, UIS, Bucaramanga (Colombia); Gharbi, Tijani, E-mail: nesariher@unipamplona.edu.co [Departement D' Optique, FEMTO-ST, 16 Route de Gray, 25030 Besancon (France)

    2011-01-01

    In this paper we propose a hand-held 3D laser scanner composed of an optical head device to extract 3D local surface information and a stereo vision system with subvoxel precision to measure the position and orientation of the 3D optical head. The optical head is manually scanned over the surface object by the operator. The orientation and position of the 3D optical head is determined by a phase-sensitive method using a 2D regular intensity pattern. This phase reference pattern is rigidly fixed to the optical head and allows their 3D location with subvoxel precision in the observation field of the stereo vision system. The 3D resolution achieved by the stereo vision system is about 33 microns at 1.8 m with an observation field of 60cm x 60cm.

  6. Biolistic transfection of neuronal cultures using a hand-held gene gun.

    Science.gov (United States)

    O'Brien, John A; Lummis, Sarah C R

    2006-01-01

    Biolistic transfection is a technique in which subcellular-sized particles coated with DNA are accelerated to high velocity to propel them into cells. This method is applicable to tissues, cells and organelles, and can be used for both in vitro and in vivo transformations; with the right equipment, it is simple, rapid and efficient. Here we provide a detailed protocol for biolistic transfection of plasmids into cultured human embryonic kidney (HEK) 293 cells and organotypic brain slices using a hand-held gene gun. There are three major steps: (i) coating microcarriers with DNA, (ii) transferring the microcarriers into a cartridge to make a 'bullet', and (iii) firing the DNA-coated microcarriers into cells using a pulse of helium gas. The method can be readily adapted to other cell types and tissues. The protocol can be completed in 1-2 h.

  7. Hand-held tools with complex kinematics are efficiently incorporated into movement planning and online control.

    Science.gov (United States)

    Baugh, Lee A; Hoe, Erica; Flanagan, J Randall

    2012-10-01

    Certain hand-held tools alter the mapping between hand motion and motion of the tool end point that must be controlled in order to perform a task. For example, when using a pool cue, the motion of the cue tip is reversed relative to the hand. Previous studies have shown that the time required to initiate a reaching movement (Fernandez-Ruiz J, Wong W, Armstrong IT, Flanagan JR. Behav Brain Res 219: 8-14, 2011), or correct an ongoing reaching movement (Gritsenko V, Kalaska JF. J Neurophysiol 104: 3084-3104, 2010), is prolonged when the mapping between hand motion and motion of a cursor controlled by the hand is reversed. Here we show that these time costs can be significantly reduced when the reversal is instantiated by a virtual hand-held tool. Participants grasped the near end of a virtual tool, consisting of a rod connecting two circles, and moved the end point to displayed targets. In the reversal condition, the rod translated through, and rotated about, a pivot point such that there was a left-right reversal between hand and end point motion. In the nonreversal control, the tool translated with the hand. As expected, when only the two circles were presented, movement initiation and correction times were much longer in the reversal condition. However, when full vision of the tool was provided, the reaction time cost was almost eliminated. These results indicate that tools with complex kinematics can be efficiently incorporated into sensorimotor control mechanisms used in movement planning and online control.

  8. An integrated portable hand-held analyser for real-time isothermal nucleic acid amplification.

    Science.gov (United States)

    Smith, Matthew C; Steimle, George; Ivanov, Stan; Holly, Mark; Fries, David P

    2007-08-29

    A compact hand-held heated fluorometric instrument for performing real-time isothermal nucleic acid amplification and detection is described. The optoelectronic instrument combines a Printed Circuit Board/Micro Electro Mechanical Systems (PCB/MEMS) reaction detection/chamber containing an integrated resistive heater with attached miniature LED light source and photo-detector and a disposable glass waveguide capillary to enable a mini-fluorometer. The fluorometer is fabricated and assembled in planar geometry, rolled into a tubular format and packaged with custom control electronics to form the hand-held reactor. Positive or negative results for each reaction are displayed to the user using an LED interface. Reaction data is stored in FLASH memory for retrieval via an in-built USB connection. Operating on one disposable 3 V lithium battery >12, 60 min reactions can be performed. Maximum dimensions of the system are 150 mm (h) x 48 mm (d) x 40 mm (w), the total instrument weight (with battery) is 140 g. The system produces comparable results to laboratory instrumentation when performing a real-time nucleic acid sequence-based amplification (NASBA) reaction, and also displayed comparable precision, accuracy and resolution to laboratory-based real-time nucleic acid amplification instrumentation. A good linear response (R2 = 0.948) to fluorescein gradients ranging from 0.5 to 10 microM was also obtained from the instrument indicating that it may be utilized for other fluorometric assays. This instrument enables an inexpensive, compact approach to in-field genetic screening, providing results comparable to laboratory equipment with rapid user feedback as to the status of the reaction.

  9. Comparison of central corneal thickness measured by hand-held and desk-mounted ultrasound pachymeters in glaucoma patients.

    Science.gov (United States)

    Salim, Sarwat; Du, Haiming; Wan, Jim

    2015-07-01

    The purpose of this study was to compare the accuracy and reproducibility of central corneal thickness measured by hand-held and desk-mounted ultrasound pachymeter in glaucoma patients under treatment. Prospective study of 65 glaucoma patients. Central corneal thickness was measured by two ultrasound pachymeters: the hand-held, portable PachPen (Accutome, Lynwood, WA), and the desk-mounted PacScan 300 (Sonomed, Lake Success, NY). The mean ± SD central corneal thickness was 526.5 ± 44.8 µm and 530.0 ± 44.7 µm for the hand-held and desk-mounted pachymeters, respectively (p = 0.15). Linear regression analysis revealed a slope of 0.97 with Pearson correlation coefficient of 0.96. Bland-Altman analysis showed a mean difference of measurements by both pachymeters of 3.22 µm with two standard deviations = 9.51. Both instruments showed high intraobserver correlation: 0.972 for the hand-held pachymeter and 0.993 for the desk-mounted pachymeter. Central corneal thickness measurements were comparable with the use of hand-held and desk-mounted ultrasound units in glaucoma patients with good intraobserver reproducibility.

  10. A new hand-held optical reflectometer to measure enamel erosion: correlation with surface hardness and calcium release.

    Science.gov (United States)

    Carvalho, Thiago Saads; Baumann, Tommy; Lussi, Adrian

    2016-04-28

    In the present study, the surface reflection intensity (SRI) was measured from enamel with different induced erosion degrees using a hand-held pen-size reflectometer (Hand-Held) and a Table-Top reflectometer. To validate the Hand-Held reflectometer, we correlated its optical signals with the change of surface microhardness (SMH), and amount of calcium released from the enamel samples during erosion. We used 124 tooth enamel specimens that were exposed to an erosive challenge of either 1, 2, 4, 6, 8, or 10 minutes. SRI and SMH were measured before and after the erosive challenge and we also measured the amount of calcium released to the citric acid. Relative SRI loss (rSRIloss) and relative SMH loss (rSMHloss) were calculated. rSRIloss from the Hand-Held and the Table-Top reflectometers were similar and significantly correlated to rSMHloss and calcium release. The regression analyses showed a significant association between rSRIloss from both reflectometers and rSMHloss and calcium, showing that both reflectometers can be used to measure erosive demineralization of enamel. The Hand-Held reflectometer is capable of assessing in vitro erosion, correlating to other commonly used methods. It is small, easy to handle and provides fast measurement, being a possible candidate to measure erosion in clinical studies.

  11. Comparative assessment of knee extensor and flexor muscle strength measured using a hand-held vs. isokinetic dynamometer.

    Science.gov (United States)

    Muff, Guillaume; Dufour, Stéphane; Meyer, Alain; Severac, François; Favret, Fabrice; Geny, Bernard; Lecocq, Jehan; Isner-Horobeti, Marie-Eve

    2016-09-01

    [Purpose] To compare measurements of knee extensor and flexor muscle strength performed using a hand-held dynamometer and an isokinetic dynamometer in apparently healthy subjects. [Subjects and Methods] Thirty adult volunteers underwent knee muscle strength evaluation using an isokinetic or a hand-held dynamometer. [Results] Strong positive correlations were found between the 2 methods, with correlation coefficients r ranging from 0.72 (95% confidence interval [CI], 0.48-0.86) to 0.87 (95% CI, 0.75-0.94), depending on the muscle group and the isokinetic evaluation mode. The reproducibility of the hand-held dynamometer findings was good, judged by a coefficient of variation of 3.2-4.2%. However, the correlation between the 2 methods for the assessment of flexor/extensor ratios ranged from -0.04 to 0.46. [Conclusion] Knee extensor and flexor muscle strength recorded with a hand-held dynamometer is reproducible and significantly correlated with the isokinetic values, indicating that this method may in some cases be a useful replacement for isokinetic strength measurement. However, for strength ratio assessment, and when judged against the isokinetic standard, a hand-held dynamometer is not a valid option.

  12. LIBS system with compact fiber spectrometer, head mounted spectra display and hand held eye-safe erbium glass laser gun

    Science.gov (United States)

    Myers, Michael J.; Myers, John D.; Sarracino, John T.; Hardy, Christopher R.; Guo, Baoping; Christian, Sean M.; Myers, Jeffrey A.; Roth, Franziska; Myers, Abbey G.

    2010-02-01

    LIBS (Laser Induced Breakdown Spectroscopy) systems are capable of real-time chemical analysis with little or no sample preparation. A Q-switched laser is configured such that laser induced plasma is produced on targeted material. Chemical element line spectra are created, collected and analyzed by a fiber spectrometer. Line spectra emission data is instantly viewed on a head mounted display. "Eye-safe" Class I erbium glass lasers provide for insitu LIBS applications without the need for eye-protection goggles. This is due to the fact that Megawatt peak power Q-switched lasers operating in the narrow spectral window between 1.5um and 1.6um are approximately 8000 times more "eye-safe" than other laser devices operating in the UV, visible and near infrared. In this work we construct and demonstrate a LIBS system that includes a hand held eye-safe laser gun. The laser gun is fitted with a micro-integrating sphere in-situ target interface and is designed to facilitate chemical analysis in remote locations. The laser power supply, battery pack, computer controller and spectrophotometer components are packaged into a utility belt. A head mounted display is employed for "hands free" viewing of the emitted line spectra. The system demonstrates that instant qualitative and semi-quantitative chemical analyses may be performed in remote locations utilizing lightweight commercially available system components ergonomically fitted to the operator.

  13. Reliability and validity of standing balance assessment index using a hand-held dynamometer in stroke patients.

    Science.gov (United States)

    Iwamoto, Koji; Yoshio, Masaharu; Takata, Yuichi; Kozuka, Naoki

    2016-11-01

    [Purpose] This study aimed to determine the reliability and validity of our standing balance assessment index using a hand-held dynamometer (the hand-held dynamometer assessment index) in stroke patients. [Subjects and Methods] The participants were 60 stroke patients with impaired standing balance. Intrarater and interrater reliabilities were evaluated employing the intraclass correlation coefficient. Criterion-related validity was evaluated by Spearman's rank correlation coefficient between the HHD assessment index and the functional balance scale. [Results] The intraclass correlation coefficient values obtained ranged from 0.91 to 0.98, and the correlation coefficient with the FBS was 0.83. [Conclusion] Our findings confirmed the reliability and validity of the hand-held dynamometer assessment index in stroke patients.

  14. Simple hand-held metal detectors are an effective means of detecting cardiac pacemakers in the deceased prior to cremation.

    Science.gov (United States)

    Stone, Jason Lyle; Williams, John; Fearn, Lesley

    2010-05-01

    The hazard of undetected cardiac pacemakers exploding in crematoria is well described. This short report describes the use of an affordable hand-held metal detector to detect cardiac pacemakers. Over the course of a year, the metal detector located 100% of cardiac pacemakers in a district general hospital mortuary. A simple model using pigskin and fat is also used to demonstrate the effectiveness in vitro. Commercially purchased hand-held metal detectors should be used in all mortuaries responsible for detection and removal of cardiac pacemakers prior to cremation.

  15. Into the Wild: Neuroergonomic Differentiation of Hand-Held and Augmented Reality Wearable Displays during Outdoor Navigation with Functional Near Infrared Spectroscopy.

    Science.gov (United States)

    McKendrick, Ryan; Parasuraman, Raja; Murtza, Rabia; Formwalt, Alice; Baccus, Wendy; Paczynski, Martin; Ayaz, Hasan

    2016-01-01

    Highly mobile computing devices promise to improve quality of life, productivity, and performance. Increased situation awareness and reduced mental workload are two potential means by which this can be accomplished. However, it is difficult to measure these concepts in the "wild". We employed ultra-portable battery operated and wireless functional near infrared spectroscopy (fNIRS) to non-invasively measure hemodynamic changes in the brain's Prefrontal cortex (PFC). Measurements were taken during navigation of a college campus with either a hand-held display, or an Augmented reality wearable display (ARWD). Hemodynamic measures were also paired with secondary tasks of visual perception and auditory working memory to provide behavioral assessment of situation awareness and mental workload. Navigating with an augmented reality wearable display produced the least workload during the auditory working memory task, and a trend for improved situation awareness in our measures of prefrontal hemodynamics. The hemodynamics associated with errors were also different between the two devices. Errors with an augmented reality wearable display were associated with increased prefrontal activity and the opposite was observed for the hand-held display. This suggests that the cognitive mechanisms underlying errors between the two devices differ. These findings show fNIRS is a valuable tool for assessing new technology in ecologically valid settings and that ARWDs offer benefits with regards to mental workload while navigating, and potentially superior situation awareness with improved display design.

  16. Hand-Held Instrument Fights Acne, Tops Over-the-Counter Market

    Science.gov (United States)

    2007-01-01

    Tyrell Inc., a Houston-based medical technologies company, was able to access engineering support in redesigning a heating element for a hand-held acne-fighting device through SATOP, NASA's Space Alliance Technology Outreach Program. SATOP put Tyrell in contact with The Boeing Company, which assessed the design and made several major contributions. The product, named Zeno, is now the highest selling over-the-counter medical device for the treatment of acne, and in 2006, Zeno was named the "SATOP Texas, Success Story of the Year." Zeno employs proprietary ClearPoint technology to provide relief of mild to moderate inflammatory acne by delivering a precisely controlled low-level dosage of heat to the blemish, causing the bacteria at the root of more than 90 percent of acne to self-destruct. Within its first year on the market, Zeno was cited by various publications for several awards, including Allure's 2005 "Best of Beauty," Marie Claire's "10 Best Gadgets for Girls," and Popular Science's 2005 "Best of What's New." A variation of the Zeno for use in treating herpetic lesions such as cold sores, by killing the virus that causes them, is currently undergoing FDA trials.

  17. 3D indoor modeling using a hand-held embedded system with multiple laser range scanners

    Science.gov (United States)

    Hu, Shaoxing; Wang, Duhu; Xu, Shike

    2016-10-01

    Accurate three-dimensional perception is a key technology for many engineering applications, including mobile mapping, obstacle detection and virtual reality. In this article, we present a hand-held embedded system designed for constructing 3D representation of structured indoor environments. Different from traditional vehicle-borne mobile mapping methods, the system presented here is capable of efficiently acquiring 3D data while an operator carrying the device traverses through the site. It consists of a simultaneous localization and mapping(SLAM) module, a 3D attitude estimate module and a point cloud processing module. The SLAM is based on a scan matching approach using a modern LIDAR system, and the 3D attitude estimate is generated by a navigation filter using inertial sensors. The hardware comprises three 2D time-flight laser range finders and an inertial measurement unit(IMU). All the sensors are rigidly mounted on a body frame. The algorithms are developed on the frame of robot operating system(ROS). The 3D model is constructed using the point cloud library(PCL). Multiple datasets have shown robust performance of the presented system in indoor scenarios.

  18. Flexible CMOS low-noise amplifiers for beyond-3G wireless hand-held devices

    Science.gov (United States)

    Becerra-Alvarez, Edwin C.; Sandoval-Ibarra, Federico; de la Rosa, José M.

    2009-05-01

    This paper explores the use of reconfigurable Low-Noise Amplifiers (LNAs) for the implementation of CMOS Radio Frequency (RF) front-ends in the next generation of multi-standard wireless transceivers. Main circuit strategies reported so far for multi-standard LNAs are reviewed and a novel flexible LNA intended for Beyond-3G RF hand-held terminals is presented. The proposed LNA circuit consists of a two-stage topology that combines inductive-source degeneration with PMOS-varactor based tuning network and a programmable load to adapt its performance to different standard specifications without penalizing the circuit noise and with a reduced number of inductors as compared to previous reported reconfigurable LNAs. The circuit has been designed in a 90-nm CMOS technology to cope with the requirements of the GSM, WCDMA, Bluetooth and WLAN (IEEE 802.11b-g) standards. Simulation results, including technology and packaging parasitics, demonstrate correct operation of the circuit for all the standards under study, featuring NF13.3dB and IIP3>10.9dBm, over a 1.85GHz-2.4GHz band, with an adaptive power consumption between 17mW and 22mW from a 1-V supply voltage. Preliminary experimental measurements are included, showing a correct reconfiguration operation within the operation band.

  19. Appearance based key-shot selection for a hand held camera

    Science.gov (United States)

    Alefs, Bram; Dijk, Judith

    2009-05-01

    Automatic selection of key-shots is an important step for video data processing. Depending on the purpose, key-shot selection provides user feed back on recorded data, storage reduction and viewpoint selection and it can be used for panoramic image stitching and 3D-reconstruction. In particular, investigating scenes of crime or accidental investigations involves large amount of data, containing information on physical arrangement of objects, details on surface geometry and appearances. This paper proposes an efficient method for automatic selection of key-shot, providing onsite feedback on recorded segments and automatic selection of view-points for 3D-reconstruction. It uses appearance based object and scene modeling for a freely moving, hand held camera. The camera motion is determined on two levels, comparing appearances of local image regions and full 3D reconstruction. On the lower level, the 2D-warp between subsequent video frames is used to determine local change of image appearance and derive a set of motion key frames. These keyframes than are used to determine full 3D motion and to reconstruct objects. Furthermore, key-frames are used for fast indexation and detection of loop closures. Examples for automatic key-frame selection are given for an re-enacted crime scene, and compared to manual selection.

  20. Guiding brain tumor resection using surface-enhanced Raman scattering nanoparticles and a hand-held Raman scanner.

    Science.gov (United States)

    Karabeber, Hazem; Huang, Ruimin; Iacono, Pasquale; Samii, Jason M; Pitter, Ken; Holland, Eric C; Kircher, Moritz F

    2014-10-28

    The current difficulty in visualizing the true extent of malignant brain tumors during surgical resection represents one of the major reasons for the poor prognosis of brain tumor patients. Here, we evaluated the ability of a hand-held Raman scanner, guided by surface-enhanced Raman scattering (SERS) nanoparticles, to identify the microscopic tumor extent in a genetically engineered RCAS/tv-a glioblastoma mouse model. In a simulated intraoperative scenario, we tested both a static Raman imaging device and a mobile, hand-held Raman scanner. We show that SERS image-guided resection is more accurate than resection using white light visualization alone. Both methods complemented each other, and correlation with histology showed that SERS nanoparticles accurately outlined the extent of the tumors. Importantly, the hand-held Raman probe not only allowed near real-time scanning, but also detected additional microscopic foci of cancer in the resection bed that were not seen on static SERS images and would otherwise have been missed. This technology has a strong potential for clinical translation because it uses inert gold-silica SERS nanoparticles and a hand-held Raman scanner that can guide brain tumor resection in the operating room.

  1. Hand-held high-resolution fluorescence imaging system for fluorescence-guided surgery of patient and cell-line pancreatic tumors growing orthotopically in nude mice.

    Science.gov (United States)

    Hiroshima, Yukihiko; Maawy, Ali; Sato, Sho; Murakami, Takashi; Uehara, Fuminari; Miwa, Shinji; Yano, Shuya; Momiyama, Masashi; Chishima, Takashi; Tanaka, Kuniya; Bouvet, Michael; Endo, Itaru; Hoffman, Robert M

    2014-04-01

    In this study, we investigated the advantages of fluorescence-guided surgery (FGS) in mice of a portable hand-sized imaging system compared with a large fluorescence imaging system or a long-working-distance fluorescence microscope. Mouse models of human pancreatic cancer for FGS included the following: (1) MiaPaCa-2-expressing green fluorescent protein, (2) BxPC3 labeled with Alexa Fluor 488-conjucated anti-carcinoembryonic antigen (CEA) antibody, and (3) patient-derived orthotopic xenograft (PDOX) labeled with Alexa Fluor 488-conjugated anti-carbohydrate antigen 19-9 antibody. Each device could clearly detect the primary MiaPaCa-2-green fluorescent protein tumor and any residual tumor after FGS. In the BxPC3 model labeled with Alexa Fluor 488-conjugated anti-CEA, each device could detect the primary tumor, but the MVX10 could not clearly detect the residual tumor remaining after FGS whereas the other devices could. In the PDOX model labeled with Alexa Fluor 488-conjugated anti-carbohydrate antigen 19-9, only the portable hand-held device could distinguish the residual tumor from the background, and complete resection of the residual tumor was achieved under fluorescence navigation. The results described in the present report suggest that the hand-held mobile imaging system can be applied to the clinic for FGS because of its convenient size and high sensitivity which should help make FGS widely used. Copyright © 2014 Elsevier Inc. All rights reserved.

  2. The Fluostick, a real hand-held system for near-infrared fluorescence image-guided surgery

    Science.gov (United States)

    Dorval, Paul; Mangeret, Norman; Guillermet, Stephanie; Righini, Christian Adrien; Barabino, Gabriele; Rizo, Philippe; Poulet, Patrick

    2014-02-01

    Near-infrared fluorescence image-guided surgery, FIGS, has lately shown a huge potential in oncologic and lymphatic related surgeries. In some indications such as liver or heart surgery, fluorescence-reachable anatomic structures are limited by the access to the surgical field. Nevertheless, most of the systems available on the market are too large to image the sides of cavities. Small devices are clearly required to improve workability of fluorescence imaging systems. The current work describes the development of an instrument and the results of its evaluation. In order to image narrow area, we developed a small size device consisting of an optical head connected to a control box. The whole system, optical head, control box and software, receives a CE mark for clinical procedures. Building on existing technologies, we simplified the fluorescence imaging system. It consists of a custom charged-coupled device camera, a high color rendering index visible LED illumination and a Class1 Laser fluorophore excitation. With a curved shape of 25x35x150mm, the optical head was designed as a true hand-held probe. The field of view varies from 5x3.75cm to 2x1.5cm. The device is able to collect and display the signal of 5pmol of IndoCyanine Green (ICG) with a spatial resolution down to 70μm at 25 frames per second. The system has been evaluated in pre-clinical and clinical procedures. The preclinical studies confirmed the ability of the system to visualize tumors in mice models. Clinical evaluations includes lymphedema investigations and surgical resections of tumors in colorectal cancer.

  3. Segmentation of Environmental Time Lapse Image Sequences for the Determination of Shore Lines Captured by Hand-Held Smartphone Cameras

    Science.gov (United States)

    Kröhnert, M.; Meichsner, R.

    2017-09-01

    The relevance of globally environmental issues gains importance since the last years with still rising trends. Especially disastrous floods may cause in serious damage within very short times. Although conventional gauging stations provide reliable information about prevailing water levels, they are highly cost-intensive and thus just sparsely installed. Smartphones with inbuilt cameras, powerful processing units and low-cost positioning systems seem to be very suitable wide-spread measurement devices that could be used for geo-crowdsourcing purposes. Thus, we aim for the development of a versatile mobile water level measurement system to establish a densified hydrological network of water levels with high spatial and temporal resolution. This paper addresses a key issue of the entire system: the detection of running water shore lines in smartphone images. Flowing water never appears equally in close-range images even if the extrinsics remain unchanged. Its non-rigid behavior impedes the use of good practices for image segmentation as a prerequisite for water line detection. Consequently, we use a hand-held time lapse image sequence instead of a single image that provides the time component to determine a spatio-temporal texture image. Using a region growing concept, the texture is analyzed for immutable shore and dynamic water areas. Finally, the prevalent shore line is examined by the resultant shapes. For method validation, various study areas are observed from several distances covering urban and rural flowing waters with different characteristics. Future work provides a transformation of the water line into object space by image-to-geometry intersection.

  4. Utility of hand-held echocardiography in outpatient pediatric cardiology management.

    Science.gov (United States)

    Riley, Alan; Sable, Craig; Prasad, Aparna; Spurney, Christopher; Harahsheh, Ashraf; Clauss, Sarah; Colyer, Jessica; Gierdalski, Marcin; Johnson, Ashley; Pearson, Gail D; Rosenthal, Joanna

    2014-12-01

    Adult patient series have shown hand-held echocardiography (echo) units (HHE) to be accurate for rapid diagnosis and triage. This is the first study to evaluate the ability of HHE to inform decision making in outpatient pediatric cardiology. New pediatric cardiology patients in outpatient clinics staffed by six pediatric cardiologists (experience 1-17 years) were prospectively enrolled if an echocardiogram (echo) was ordered during their initial visit. After history and physical examination and before a standard echo, the cardiologists performed a bedside HHE examination (GE Vscan 1.7-3.8 MHz), documented findings, and made a clinical decision. Diagnoses and decisions based on HHE were compared with final management after the standard echo. The study enrolled 101 subjects (ages 9 days to 19 years). The cardiologists considered HHE imaging adequate for decision making for 80 of the 101 subjects. For 77 of the 80 subjects with acceptable HHE imaging (68/68 normal and 9/12 abnormal standard echoes), the HHE-based primary diagnoses and decisions agreed with the final management. The sensitivity of HHE was 75 % (95 % confidence interval [CI] 43-94 %) and the positive predictive value 100 % (95 % CI 66-100 %) for pediatric heart disease. The agreement between standard echocardiography and HHE imaging was substantial (κ = 0.82). Excluding one of the least experienced cardiologists, HHE provided the basis for correct cardiac diagnoses and management for all the subjects with acceptable HHE imaging (58/58 normal and 9/9 abnormal echoes). In outpatient pediatric cardiology, HHE has potential as a tool to complement physical examination. Further investigation is needed to evaluate how value improves with clinical experience.

  5. Consumer product safety: Risk assessment of exposure to asbestos emissions from hand-held hair dryers

    Science.gov (United States)

    Hallenbeck, William H.

    1981-01-01

    The United States Consumer Product Safety Commission (CPSC) is concerned that consumer exposure to asbestos from consumer products may present an unreasonable risk of injury. Recently, CPSC has obtained agreement by industry to cease production and distribution of hair dryers containing asbestos heat insulation. CPSC intends to broaden its investigation by selecting consumer products containing asbestos for “priority attention.” The Commission does not intend to make quantitative estimates of cancer risks posed by exposure to asbestos fibers in making regulatory decisions. This position may lead to a serious waste of resources for the Commission, industry, and society. The Commission should focus its initial attention on those products for which the release of asbestos is significant enough to cause an unreasonable health risk. To make a risk assessment for a particular use of asbestos, CPSC must acquire or request data on asbestos emissions and define “unreasonable risk to health.” In an attempt to give some meaning to the phrase “risk assessment,” the primary goal of this paper is to present a detailed risk assessment of exposure to asbestos from hand-held hair dryers. Several scenarios of use are presented using various assumptions regarding time of operation, mixing of fibers in a small room, rate of fiber emission, and time of exposure. The worst case analysis of the health risk of exposure to hair dryer emissions is based on several conservative assumptions and shows that the increased number of deaths per year due to respiratory cancer is 4 for the entire United States population. A more representative case analysis shows the increased number of deaths to be on the order of 0.15 per year.

  6. Validation of a portable hand-held whole-blood ketone meter for use in cats.

    Science.gov (United States)

    Weingart, Christiane; Lotz, Fabian; Kohn, Barbara

    2012-03-01

    Urinary dipsticks are the most frequent method used for screening of ketones in animals, but this method has many drawbacks. In human medicine, portable meters that measure ketones in whole blood have largely replaced urinary dipsticks. The aim of this prospective study was to validate a portable whole-blood ketone meter for use in cats. Sixty-two cats (11 clinically healthy, 51 with diabetes mellitus) were included in the study. The concentration of β-hydroxybuyrate (β-HB) was measured in venous and capillary blood with a hand-held ketone meter (Precision Xceed; assay range 0-8 mmol/L) and compared with a spectrophotometric method. Precision, accuracy, and the effects of hematocrit and anticoagulants were evaluated. Between-run precision using low- and high-concentration control solutions was 8.1% and 2.6%, respectively; within-run coefficient of variation determined using 12 feline blood samples was 2.8%. In the 62 cats, β-HB concentrations measured with the portable ketone meter ranged from 0-7.4 mmol/L (median 0.9 mmol/L). When β-HB concentrations measured by the portable meter were 4.0 mmol/L were lower than those obtained by the reference method in 20 of 24 cats (83%). There was good correlation between capillary and venous measurements. Results were not affected by hematocrits from 0.17 to 0.50 L/L, but EDTA was not a suitable anticoagulant. Measurement of β-HB concentration in peripheral or capillary blood by an easy-to-use portable ketone meter was suitable for detecting ketonemia in cats. Underestimation of β-HB concentration was observed at higher values, but results were sufficiently high to aid in diagnosing diabetic ketoacidosis. © 2012 American Society for Veterinary Clinical Pathology.

  7. Moving a hand-held object: Reconstruction of referent coordinate and apparent stiffness trajectories.

    Science.gov (United States)

    Ambike, S; Zhou, T; Zatsiorsky, V M; Latash, M L

    2015-07-01

    This study used the framework of the referent configuration hypothesis and slow changes in the external conditions during vertical oscillation of a hand-held object to infer the characteristics of hypothetical control variables. The study had two main objectives: (1) to show that hypothetical control variables, namely, referent coordinates and apparent stiffness of vertical hand position and grip force can be measured in an experiment; and (2) to establish relation(s) between these control variables that yield the classic grip-force-load-force coupling. Healthy subjects gripped a handle and performed vertical oscillations between visual targets at one of five metronome-prescribed frequencies. A HapticMaster robot was used to induce slow changes in the vertical force applied to the handle, while the size of the handle was changed slowly leading to changes in the grip aperture. The subjects were instructed not to react to possible changes in the external forces. A linear, second-order model was used to reconstruct the referent coordinate and apparent stiffness values for each phase of the vertical oscillation cycle using across-cycle regressions. The reconstructed time profiles of the referent coordinates and apparent stiffness showed consistent trends across subjects and movement frequencies. To validate the method, these values were used to predict the vertical force and the grip force applied to the handle for movement cycles that were not utilized in the reconstruction process. Analysis of the coupling between the four variables, two referent coordinates and two apparent stiffness values, revealed a single strong constraint reflecting the coupling between the grip force and vertical force. We view these data as providing experimental support for the idea of controlling natural, multi-muscle actions with shifts in a low-dimensional set of referent coordinates.

  8. Efficacy of hand held, inexpensive UV light sources on Acanthamoeba, causative organism in amoebic keratitis

    Directory of Open Access Journals (Sweden)

    Ivan Cometa

    2010-01-01

    Full Text Available Ivan Cometa1, Andrew Rogerson1, Scott Schatz21Department of Biology, California State University Fresno, Fresno, CA, USA; 2Arizona College of Optometry, Midwestern University, Glendale, AZ, USAAbstract: Multipurpose lens cleaning solutions (MPS fail to consistently kill or inactivate Acanthamoeba cysts and UV irradiation, while effective at high doses, can damage contact lenses. The present study considered synergy of action between MPS and hand-held inexpensive (ie, relatively weak UV irradiation units. Regardless of disinfection method recently formed cysts (<10 days were far more susceptible to treatment than mature cysts (>14 days. This has important implications for future protocols on testing methods for killing amoebae. The study also showed that cysts of different strains (two tested, FLA2 and P120 are variable in their response to MPS, presumably reflecting differences in cyst wall structure and thus permeability to the disinfectant. On the other hand, the effect of UV irradiation was not wall structure dependent. A 6-hour treatment with MPS alone killed trophic amoebae but failed to kill any mature cysts. Cysts of strain FLA2 were killed after 24 hours with MPS but cysts of strain P120 survived. UV irradiation with the larger 4 W unit killed all cysts after 7 minutes and was more effective than the smaller battery-powered unit (after 10 minutes about 50% of cysts were killed. When the larger unit was used with the MPS disinfection, all trophozoites were killed using UV for 3 minutes and MPS for 1 hour. The resistant P120 cysts remained a challenge but a 2- to 4-minute UV treatment followed by MPS for 3 or 6 hours reduced mature cyst survival by about 50%. The small unit in combination with MPS was less effective but did reduce the time required to kill trophic amoebae in MPS (6 hours MPS alone versus 3 hours MPS with a 1-minute UV treatment. In short, inexpensive UV units do enhance MPS disinfection and future lens cleaning systems

  9. Hand-held analyser based on microchip electrophoresis with contactless conductivity detection for measurement of chemical warfare agent degradation products

    Science.gov (United States)

    Duran, Karolina-Petkovic; Zhu, Yonggang; Chen, Chuanpin; Swallow, Anthony; Stewart, Robert; Hoobin, Pam; Leech, Patrick; Ovenden, Simon

    2008-12-01

    This paper reports on the development of a hand-held device for on-site detection of organophosphonate nerve agent degradation products. This field-deployable analyzer relies on efficient microchip electrophoresis separation of alkyl methylphosphonic acids and their sensitive contactless conductivity detection. Miniaturized, low-powered design is coupled with promising analytical performance for separating the breakdown products of chemical warfare agents such as Soman, Sarin and VX . The detector has a detection limit of about 10 μg/mL and has a good linear response in the range 10-300 μg/mL concentration range. Applicability to environmental samples is demonstrated .The new hand-held analyzer offers great promise for converting conventional ion chromatography or capillary electrophoresis sophisticated systems into a portable forensic laboratory for faster, simpler and more reliable on-site screening.

  10. Rapid prediction of total petroleum hydrocarbons in soil using a hand-held mid-infrared field instrument.

    Science.gov (United States)

    Webster, Grant T; Soriano-Disla, José M; Kirk, Joel; Janik, Leslie J; Forrester, Sean T; McLaughlin, Mike J; Stewart, Richard J

    2016-11-01

    This manuscript reports on the performance of a hand-held diffuse reflectance (mid)-infrared Fourier transform (DRIFT) spectrometer for the prediction of total petroleum hydrocarbons (TPH) in three different diesel-contaminated soils. These soils include: a carbonate dominated clay, a kaolinite dominated clay and a loam from Padova Italy, north Western Australia and southern Nigeria, respectively. Soils were analysed for TPH concentration using a standard laboratory methods and scanned in DRIFT mode with the hand-held spectrometer to determine TPH calibration models. Successful partial least square regression (PLSR) predictions, with coefficient of determination (R(2)) ~0.99 and root mean square error (RMSE) held mid-infrared instrument can accurately detect TPH across different soil types and concentrations, which paves the way for a variety of applications in the field.

  11. An architecture for analysis and collection of RF signals used by hand-held devices in computer communications

    OpenAIRE

    Hwa, Chua Guan

    2001-01-01

    This thesis studies the wireless communications aspects of an Internetconnected hand-held device. It reviews the multipath effects of RF propagation and provides a detailed analysis of the Mobitex network protocols. Field experiments were conducted to measure the signal strength of indoor and outdoor reception. A framework for using real-time wireless communications analysis equipment for the collection of this RF signal is designed and discussed. Expected results from the collection of this ...

  12. Guiding Brain Tumor Resection Using Surface-Enhanced Raman Scattering Nanoparticles and a Hand-Held Raman Scanner

    OpenAIRE

    Karabeber, Hazem; Huang, Ruimin; Iacono, Pasquale; Samii, Jason M.; Pitter, Ken; Holland, Eric C.; Kircher, Moritz F.

    2014-01-01

    The current difficulty in visualizing the true extent of malignant brain tumors during surgical resection represents one of the major reasons for the poor prognosis of brain tumor patients. Here, we evaluated the ability of a hand-held Raman scanner, guided by surface-enhanced Raman scattering (SERS) nanoparticles, to identify the microscopic tumor extent in a genetically engineered RCAS/tv-a glioblastoma mouse model. In a simulated intraoperative scenario, we tested both a static Raman imagi...

  13. In vivo evaluation of a novel, wrist-mounted arterial pressure sensing device versus the traditional hand-held tonometer.

    Science.gov (United States)

    Vardoulis, Orestis; Saponas, T Scott; Morris, Dan; Villar, Nicolas; Smith, Greg; Patel, Shwetak; Tan, Desney

    2016-10-01

    Although hemodynamic parameters can be assessed non-invasively, state-of-the-art non-invasive systems generally require an expert operator and are not applicable for ambulatory measurements. These limitations have restricted our understanding of the continuous behavior of hemodynamic parameters. In this manuscript, we introduce a novel wrist-mounted device that incorporates an array of pressure sensors which can be used to extract arterial waveforms and relevant pulse wave analysis biomarkers. In vivo evaluation is performed with Bland-Altman analysis to compare the novel sensor to a gold-standard hand-held tonometer by assessing their reproducibility and agreement in peripheral augmentation index (AIx) estimation at the radial artery. Arterial waves from 28 randomly selected participants were recorded in a controlled environment. Initially we assess the reproducibility of AIx results for both devices. The intra-class correlation coefficient (ICC) and mean difference ± SD were [0.913, 0.033±0.048] and [0.859, 0.039±0.076] for the hand-held and the wrist-mounted tonometer respectively. We then show that the AIx values derived from the novel tonometer have good agreement, accuracy, and precision when compared against the AIx values derived from the reference hand-held tonometer (ICC 0.927, mean difference 0.026±0.049). In conclusion, we have presented evidence that the new wrist-mounted arterial pressure sensor records arterial waveforms that can be processed to yield AIx values that are in good agreement with its traditional hand-held counterpart.

  14. 基于Android的定位追踪APP的设计与实现%The Design of Simple Hand-held Tracking APP Based on Android

    Institute of Scientific and Technical Information of China (English)

    葛欣; 蔺雪葳; 王依岳

    2016-01-01

    针对手持定位追踪器便携及操作方面的缺陷,本文设计了基于Android的追踪器手机客户端APP。从定位系统的完整性出发,介绍了追踪系统的工作原理、服务器端数据处理机制、手机APP工作流程,以及调用百度地图显示定位器位置的原理和流程。%Defect Tracker for portable hand-held and operated, this article is designed based on Android tracking client APP, from the integrity of the positioning system, the working principle of the tracking system, server-side data processing mechanism, the mobile phone APP workflow and call Baidu map shows the location of the vehicle the principles and processes.

  15. Hand-held personal digital assistant program for the HEMOCHRON RxDx heparin and protamine dosing system.

    Science.gov (United States)

    El Rouby, Soumaya; Rinehart, Kristin; Zucker, Marcia L; LaDuca, Frank M

    2003-09-01

    The use of in vitro dosing assays for heparin and protamine during cardiac surgery has significantly improved overall postoperative patient outcome. The HEMOCHRON RxDx system (International Technidyne Corp, Edison, NJ) is widely used for anticoagulation management. Based on a series of consecutive in vitro tests, the RxDx system is used to quantify the patient's heparin requirement (heparin response test, HRT), measure the activated clotting time (ACT), calculate the blood heparin concentration and the required protamine dose (protamine response test, PRT), as well as determine the efficacy of heparin reversal (protamine dose assay, PDA-O). A hand-held personal digital assistant (PDA) program has been developed that performs the RxDx calculations used for anticoagulation management during cardiac surgery. The Palm m505 hand-held device (Palm, Inc., Santa Clara, CA) is used in concert with any standard Hemochron blood coagulation system. The Palm m505 device has been programmed to perform all the calculations required for the RxDx test system. Patient's body weight, height, and gender are entered into the program using the onscreen keypad and the template provided in the Hemochron program. The calculator automatically provides the patient's blood volume and the recommended heparin dose upon entering the baseline ACT and HRT values and a target ACT. At the end of the case, the optimal protamine dose is determined, and the total heparin level is calculated and displayed upon entry of ACT and PRT clotting times. Following protamine administration, the program calculates any additional protamine required to neutralize residual heparin using the data from a PDA-O test. The RxDx hand-held PDA is accurate, quick, simple, and easy to use, patient data are saved and can be retrieved. The inclusion of this rapid computing technology into the Hemochron RxDx system serves to expand the applications of the Hemochron RxDx system during cardiac interventions.

  16. Comparison of a semiautomated hand-held device to test minimal erythema dose before narrowband ultraviolet B phototherapy with the conventional method using matched doses.

    Science.gov (United States)

    Lynch, M; Carroll, F; Kavanagh, A; Honari, B; Collins, P

    2014-12-01

    A semiautomated hand-held device has been introduced in some phototherapy centres to establish the minimal erythema dose (MED) before treatment with narrowband ultraviolet (NBUV) B. To compare the semiautomated hand-held device with the conventional method of MED testing (a UV-opaque template and a panel of UVB fluorescent tubes), using the same series of incremented doses. Twenty-four patients referred for treatment with NBUVB phototherapy were included. Each patient had MED testing with the conventional method and the semiautomated hand-held device at the same level of the left and right back. The results were read by four investigators each time. The semiautomated hand-held device was a significant estimator of the MED using the conventional panel method (P < 0.001; r = 0.97). The average ratio of the hand-held MED to the conventional MED was 67%. The mean difference between the methods was 165 mJ/cm(2) . The interobserver test showed very high agreement for both methods of MED testing (Cronbach α coefficient 0.97 for the hand-held MED tester vs. 0.93 for the conventional method). The semiautomated hand-held device MED results were lower than that of the conventional panel method and may prolong the treatment course by 2-3 treatments. The hand-held tester is a fast and reproducible method, and may allow more phototherapy units, limited by staff and time, to do MED testing. © 2014 European Academy of Dermatology and Venereology.

  17. Development and Characterization of a Round Hand-Held Silicon Photomultiplier Based Gamma Camera for Intraoperative Imaging

    Science.gov (United States)

    Popovic, Kosta; McKisson, Jack E.; Kross, Brian; Lee, Seungjoon; McKisson, John; Weisenberger, Andrew G.; Proffitt, James; Stolin, Alexander; Majewski, Stan; Williams, Mark B.

    2014-06-01

    This paper describes the development of a hand-held gamma camera for intraoperative surgical guidance that is based on silicon photomultiplier (SiPM) technology. The camera incorporates a cerium doped lanthanum bromide ( LaBr3:Ce) plate scintillator, an array of 80 SiPM photodetectors and a two-layer parallel-hole collimator. The field of view is circular with a 60 mm diameter. The disk-shaped camera housing is 75 mm in diameter, approximately 40.5 mm thick and has a mass of only 1.4 kg, permitting either hand-held or arm-mounted use. All camera components are integrated on a mobile cart that allows easy transport. The camera was developed for use in surgical procedures, including determination of the location and extent of primary carcinomas, detection of secondary lesions, and sentinel lymph node biopsy (SLNB). Here, we describe the camera design and its principal operating characteristics, including spatial resolution, energy resolution, sensitivity uniformity, and geometric linearity. The gamma camera has an intrinsic spatial resolution of 4.2 mm FWHM, an energy resolution of 21.1% FWHM at 140 keV, and a sensitivity of 481 and 73 cps/MBq when using the single- and double-layer collimators, respectively.

  18. Development and characterization of a round hand-held silicon photomultiplier based gamma camera for intraoperative imaging

    Science.gov (United States)

    Popovic, Kosta; McKisson, Jack E.; Kross, Brian; Lee, Seungjoon; McKisson, John; Weisenberger, Andrew G.; Proffitt, James; Stolin, Alexander; Majewski, Stan; Williams, Mark B.

    2017-01-01

    This paper describes the development of a hand-held gamma camera for intraoperative surgical guidance that is based on silicon photomultiplier (SiPM) technology. The camera incorporates a cerium doped lanthanum bromide (LaBr3:Ce) plate scintillator, an array of 80 SiPM photodetectors and a two-layer parallel-hole collimator. The field of view is circular with a 60 mm diameter. The disk-shaped camera housing is 75 mm in diameter, approximately 40.5 mm thick and has a mass of only 1.4 kg, permitting either hand-held or arm-mounted use. All camera components are integrated on a mobile cart that allows easy transport. The camera was developed for use in surgical procedures including determination of the location and extent of primary carcinomas, detection of secondary lesions and sentinel lymph node biopsy (SLNB). Here we describe the camera design and its principal operating characteristics, including spatial resolution, energy resolution, sensitivity uniformity, and geometric linearity. The gamma camera has an intrinsic spatial resolution of 4.2 mm FWHM, an energy resolution of 21.1 % FWHM at 140 keV, and a sensitivity of 481 and 73 cps/MBq when using the single- and double-layer collimators, respectively. PMID:28286345

  19. Development and performance of a hand-held CZT detector for in-situ measurements at the emergency response

    Energy Technology Data Exchange (ETDEWEB)

    Ji, Young Yong; Chung, Kun Ho; Kim, Chang Jong; Lee, Wan No; Choi, Geun Sik; Kang, Mun Ja [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of); Yoon, Jin [SI Detection Co. Ltd, Daejeon (Korea, Republic of)

    2016-06-15

    A hand-held detector for an emergency response was developed for nuclide identification and to estimate the information of the ambient dose rate in the scene of an accident as well as the radioactivity of the contaminants. To achieve this, the most suitable sensor was first selected as a cadmium zinc telluride (CZT) semiconductor and the signal processing unit from a sensor and the signal discrimination and storage unit were successfully manufactured on a printed circuit board. The performance of the developed signal processing unit was then evaluated to have an energy resolution of about 14 keV at 662 keV. The system control unit was also designed to operate the CZT detector, monitor the detector, battery, and interface status, and check and transmit the measured results of the ambient dose rate and radioactivity. In addition, a collimator, which can control the inner radius, and the airborne dust sampler, which consists of an air filter and charcoal filter, were developed and mounted to the developed CZT detector for the quick and efficient response of a nuclear accident. The hand-held CZT detector was developed to make the in-situ gamma-ray spectrometry and its performance was checked to have a good energy resolution. In addition, the collimator and the airborne dust sampler were developed and mounted to the developed CZT detector for a quick and efficient response to a nuclear accident.

  20. A new hand-held microfluidic cytometer for evaluating irradiation damage by analysis of the damaged cells distribution

    Science.gov (United States)

    Wang, Junsheng; Fan, Zhiqiang; Zhao, Yile; Song, Younan; Chu, Hui; Song, Wendong; Song, Yongxin; Pan, Xinxiang; Sun, Yeqing; Li, Dongqing

    2016-03-01

    Space radiation brings uneven damages to cells. The detection of the distribution of cell damage plays a very important role in radiation medicine and the related research. In this paper, a new hand-held microfluidic flow cytometer was developed to evaluate the degree of radiation damage of cells. The device we propose overcomes the shortcomings (e.g., large volume and high cost) of commercial flow cytometers and can evaluate the radiation damage of cells accurately and quickly with potential for onsite applications. The distribution of radiation-damaged cells is analyzed by a simultaneous detection of immunofluorescence intensity of γ-H2AX and resistance pulse sensor (RPS) signal. The γ-H2AX fluorescence intensity provides information of the degree of radiation damage in cells. The ratio of the number of cells with γ-H2AX fluorescence signals to the total numbers of cells detected by RPS indicates the percentage of the cells that are damaged by radiation. The comparison experiment between the developed hand-held microfluidic flow cytometer and a commercial confocal microscope indicates a consistent and comparable detection performance.

  1. CT-guided bone biopsy: Initial experience with a commercially available hand held Black and Decker{sup TM} drill

    Energy Technology Data Exchange (ETDEWEB)

    Buckley, O. [Department of Radiology, Adelaide and Meath, Hospital, Tallaght, Dublin 24 (Ireland); Benfayed, W. [Department of Radiology, Adelaide and Meath, Hospital, Tallaght, Dublin 24 (Ireland); Geoghegan, T. [Department of Radiology, Adelaide and Meath, Hospital, Tallaght, Dublin 24 (Ireland); Al-Ismail, K. [Department of Radiology, King Faisal Hospital (Saudi Arabia); Munk, P.L. [Department of Radiology, Musculo-Skeletal division, Vancouver General Hospital, 899 W. 12th Ave., Vancouver, BC V5Z 1M9 (Canada); Torreggiani, William C. [Department of Radiology, Adelaide and Meath, Hospital, Tallaght, Dublin 24 (Ireland)]. E-mail: william.torreggiani@amnch.ie

    2007-01-15

    Purpose: To describe the use of a simple commercially available Black and Decker{sup TM} hand based drill in performing CT-guided bone biopsies. Materials and methods: Three international institutions were enrolled in the study. In each centre, a fellowship trained musculoskeletal radiologist directed the assessment of a hand based commercial drill for performing CT-guided bone biopsies. A specially designed component was engineered which allowed the connection of a standard bone biopsy set to a commercial drill. The component was distributed to the three centres involved. Over a 3-year period, data from all three institutions was collected. Information regarding technical success, diagnostic data and complication rates were all collated to assess the technical feasibility of this technique. Results: In total 68 patients underwent bone biopsy using a hand held commercial drill. Technical success was achieved in 65 patients. Diagnostic material was obtained in 53 patients. Non-diagnostic material was obtained in 12 patients. Five out of the 12 patients with non-diagnostic material had repeat biopsies with diagnostic material obtained in 2 of these. No major complications occurred in any patient. Conclusion: CT-guided bone biopsy using a hand held commercial drill has a technically high success rate with minimal complications.

  2. SHIELDING AND DETECTOR RESPONSE CALCULATIONS PERTAINING TO CATEGORY 1 QUANTITIES OF PLUTONIUM AND HAND-HELD PLASTIC SCINTILLATORS

    Energy Technology Data Exchange (ETDEWEB)

    Couture, A.

    2013-06-07

    Nuclear facilities sometimes use hand-held plastic scintillator detectors to detect attempts to divert special nuclear material in situations where portal monitors are impractical. MCNP calculations have been performed to determine the neutron and gamma radiation field arising from a Category I quantity of weapons-grade plutonium in various shielding configurations. The shields considered were composed of combinations of lead and high-density polyethylene such that the mass of the plutonium plus shield was 22.7 kilograms. Monte-Carlo techniques were also used to determine the detector response to each of the shielding configurations. The detector response calculations were verified using field measurements of high-, medium-, and low- energy gamma-ray sources as well as a Cf-252 neutron source.

  3. HAND-HELD GAMMA-RAY SPECTROMETER BASED ON HIGH-EFFICIENCY FRISCH-RING CdZnTe DETECTORS.

    Energy Technology Data Exchange (ETDEWEB)

    CUI,Y.

    2007-05-01

    Frisch-ring CdZnTe detectors have demonstrated good energy resolution, el% FWHM at 662 keV, and good efficiency for detecting gamma rays. This technique facilitates the application of CdZnTe materials for high efficiency gamma-ray detection. A hand-held gamma-ray spectrometer based on Frisch-ring detectors is being designed at Brookhaven National Laboratory. It employs an 8x8 CdZnTe detector array to achieve a high volume of 19.2 cm3, so that detection efficiency is significantly improved. By using the front-end ASICs developed at BNL, this spectrometer has a small profile and high energy resolution. The spectrometer includes signal processing circuit, digitization and storage circuit, high-voltage module, and USB interface. In this paper, we introduce the details of the system structure and report our test results with it.

  4. Hand-held multi-DOF robotic forceps for neurosurgery designed for dexterous manipulation in deep and narrow space.

    Science.gov (United States)

    Okubo, Takuro; Harada, Kanako; Fujii, Masahiro; Tanaka, Shinichi; Ishimaru, Tetsuya; Iwanaka, Tadashi; Nakatomi, Hirohumi; Sora, Sigeo; Morita, Akio; Sugita, Naohiko; Mitsuishi, Mamoru

    2014-01-01

    Neurosurgical procedures require precise and dexterous manipulation of a surgical suture in narrow and deep spaces in the brain. This is necessary for surgical tasks such as the anastomosis of microscopic blood vessels and dura mater suturing. A hand-held multi-degree of freedom (DOF) robotic forceps was developed to aid the performance of such difficult tasks. The diameter of the developed robotic forceps is 3.5 mm, and its tip has three DOFs, namely, bending, rotation, and grip. Experimental results showed that the robotic forceps had an average needle insertion force of 1.7 N. Therefore, an increase in the needle insertion force is necessary for practical application of the developed device.

  5. US-ROK Action Sheet 34: Safeguards Application of a Hand-held Mechanically Cooled Germanium Spectrometer

    Energy Technology Data Exchange (ETDEWEB)

    Dreyer, J. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Burks, M. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Ham, Y. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Kwak, S. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2015-10-20

    This report summarizes results of Action Sheet 34 - for the cooperative efforts on the field testing and evaluation of a high-resolution, hand-held, gamma-ray spectrometer, known as SPG (Spectroscopic Planar Germanium), for safeguards application such as short notice inspections, UF6 analysis, enrichment determination, and other potential applications. The Spectroscopic Planar Germanium (SPG) has been demonstrated IAEA Physical Inventory Verification (PIV) in South Korea. This field test was a success and the feedback provided by KINAC, IAEA, and national laboratory staff was used to direct efforts to improve the instrument this year. Key points in this report include measurement results from PIV, analysis of spectra with commercially available Ortec U235 and PC-FRAM, and completion of tripod and tungsten collimator and integration of user feedback.

  6. Real-time hand-held ultrasound medical-imaging device based on a new digital quadrature demodulation processor.

    Science.gov (United States)

    Levesque, Philippe; Sawan, Mohamad

    2009-08-01

    A fully hardware-based real-time digital wideband quadrature demodulation processor based on the Hilbert transform is proposed to process ultrasound radio frequency signals. The presented architecture combines 2 finite impulse response (FIR) filters to process in-phase and quadrature signals and includes a piecewise linear approximation architecture that performs the required square root operations. The proposed implementation enables flexibility to support different transducers with its ability to load on-the-fly different FIR filter coefficient sets. The complexity and accuracy of the demodulator processor are analyzed with simulated RF data; a normalized residual sum-of-squares cost function is used for comparison with the Matlab Hilbert function. Three implementations are integrated into a hand-held ultrasound system for experimental accuracy and performance evaluation. Real-time images were acquired from a reference phantom, demonstrating the feasibility of using the presented architecture to perform real-time digital quadrature demodulation of ultrasonic signal echoes. Experimental results show that the implementation, using only 2942 slices and 3 dedicated digital multipliers of a low-cost and low-power field-programmable gate array (FPGA) is accurate relative to a comparable software- based system; axial and lateral resolution of 1 mm and 2 mm, respectively, were obtained with a 12-mm piezoelectric transducer without postprocessing. Because the processing and sampling rates are the same, high-frequency ultrasound signals can be processed as well. For a 15-frame-per-second display, the hand-held ultrasonic imaging-processing core (FPGA, memory) requires only 45 mW (dynamic) when using a 5-MHz single-element piezoelectric transducer.

  7. Hand-held portable desorption atmospheric pressure chemical ionization ion source for in situ analysis of nitroaromatic explosives.

    Science.gov (United States)

    Jjunju, Fred P M; Maher, Simon; Li, Anyin; Syed, Sarfaraz U; Smith, Barry; Heeren, Ron M A; Taylor, Stephen; Cooks, R Graham

    2015-10-06

    A novel, lightweight (0.6 kg), solvent- and gas-cylinder-free, hand-held ion source based on desorption atmospheric pressure chemical ionization has been developed and deployed for the analysis of nitroaromatic explosives on surfaces in open air, offering portability for in-field analysis. A small, inexpensive, rechargeable lithium polymer battery was used to power the custom-designed circuitry within the device, which generates up to ±5 kV dc voltage to ignite a corona discharge plasma in air for up to 12 h of continuous operation, and allowing positive- and negative-ion mass spectrometry. The generated plasma is pneumatically transported to the surface to be interrogated by ambient air at a rate of 1-3.5 L/min, compressed using a small on-board diaphragm pump. The plasma source allows liquid or solid samples to be examined almost instantaneously without any sample preparation in the open environment. The advantages of low carrier gas and low power consumption (<6 W), as well as zero solvent usage, have aided in developing the field-ready, hand-held device for trigger-based, "near-real-time" sampling/ionization. Individual nitroaromatic explosives (such as 2,4,6-trinitrotoluene) can be easily detected in amounts as low as 5.8 pg with a linear dynamic range of at least 10 (10-100 pg), a relative standard deviation of ca. 7%, and an R(2) value of 0.9986. Direct detection of several nitroaromatic compounds in a complex mixture without prior sample preparation is demonstrated, and their identities are confirmed by tandem mass spectrometry fragmentation patterns.

  8. Assessment of Lower Limb Muscle Strength and Power Using Hand-Held and Fixed Dynamometry: A Reliability and Validity Study.

    Science.gov (United States)

    Mentiplay, Benjamin F; Perraton, Luke G; Bower, Kelly J; Adair, Brooke; Pua, Yong-Hao; Williams, Gavin P; McGaw, Rebekah; Clark, Ross A

    2015-01-01

    Hand-held dynamometry (HHD) has never previously been used to examine isometric muscle power. Rate of force development (RFD) is often used for muscle power assessment, however no consensus currently exists on the most appropriate method of calculation. The aim of this study was to examine the reliability of different algorithms for RFD calculation and to examine the intra-rater, inter-rater, and inter-device reliability of HHD as well as the concurrent validity of HHD for the assessment of isometric lower limb muscle strength and power. 30 healthy young adults (age: 23±5 yrs, male: 15) were assessed on two sessions. Isometric muscle strength and power were measured using peak force and RFD respectively using two HHDs (Lafayette Model-01165 and Hoggan microFET2) and a criterion-reference KinCom dynamometer. Statistical analysis of reliability and validity comprised intraclass correlation coefficients (ICC), Pearson correlations, concordance correlations, standard error of measurement, and minimal detectable change. Comparison of RFD methods revealed that a peak 200 ms moving window algorithm provided optimal reliability results. Intra-rater, inter-rater, and inter-device reliability analysis of peak force and RFD revealed mostly good to excellent reliability (coefficients ≥ 0.70) for all muscle groups. Concurrent validity analysis showed moderate to excellent relationships between HHD and fixed dynamometry for the hip and knee (ICCs ≥ 0.70) for both peak force and RFD, with mostly poor to good results shown for the ankle muscles (ICCs = 0.31-0.79). Hand-held dynamometry has good to excellent reliability and validity for most measures of isometric lower limb strength and power in a healthy population, particularly for proximal muscle groups. To aid implementation we have created freely available software to extract these variables from data stored on the Lafayette device. Future research should examine the reliability and validity of these variables in clinical

  9. Assessment of Lower Limb Muscle Strength and Power Using Hand-Held and Fixed Dynamometry: A Reliability and Validity Study.

    Directory of Open Access Journals (Sweden)

    Benjamin F Mentiplay

    Full Text Available Hand-held dynamometry (HHD has never previously been used to examine isometric muscle power. Rate of force development (RFD is often used for muscle power assessment, however no consensus currently exists on the most appropriate method of calculation. The aim of this study was to examine the reliability of different algorithms for RFD calculation and to examine the intra-rater, inter-rater, and inter-device reliability of HHD as well as the concurrent validity of HHD for the assessment of isometric lower limb muscle strength and power.30 healthy young adults (age: 23±5 yrs, male: 15 were assessed on two sessions. Isometric muscle strength and power were measured using peak force and RFD respectively using two HHDs (Lafayette Model-01165 and Hoggan microFET2 and a criterion-reference KinCom dynamometer. Statistical analysis of reliability and validity comprised intraclass correlation coefficients (ICC, Pearson correlations, concordance correlations, standard error of measurement, and minimal detectable change.Comparison of RFD methods revealed that a peak 200 ms moving window algorithm provided optimal reliability results. Intra-rater, inter-rater, and inter-device reliability analysis of peak force and RFD revealed mostly good to excellent reliability (coefficients ≥ 0.70 for all muscle groups. Concurrent validity analysis showed moderate to excellent relationships between HHD and fixed dynamometry for the hip and knee (ICCs ≥ 0.70 for both peak force and RFD, with mostly poor to good results shown for the ankle muscles (ICCs = 0.31-0.79.Hand-held dynamometry has good to excellent reliability and validity for most measures of isometric lower limb strength and power in a healthy population, particularly for proximal muscle groups. To aid implementation we have created freely available software to extract these variables from data stored on the Lafayette device. Future research should examine the reliability and validity of these variables in

  10. Cellphone-Based Hand-Held Microplate Reader for Point-of-Care Testing of Enzyme-Linked Immunosorbent Assays.

    Science.gov (United States)

    Berg, Brandon; Cortazar, Bingen; Tseng, Derek; Ozkan, Haydar; Feng, Steve; Wei, Qingshan; Chan, Raymond Yan-Lok; Burbano, Jordi; Farooqui, Qamar; Lewinski, Michael; Di Carlo, Dino; Garner, Omai B; Ozcan, Aydogan

    2015-08-25

    Standard microplate based enzyme-linked immunosorbent assays (ELISA) are widely utilized for various nanomedicine, molecular sensing, and disease screening applications, and this multiwell plate batched analysis dramatically reduces diagnosis costs per patient compared to nonbatched or nonstandard tests. However, their use in resource-limited and field-settings is inhibited by the necessity for relatively large and expensive readout instruments. To mitigate this problem, we created a hand-held and cost-effective cellphone-based colorimetric microplate reader, which uses a 3D-printed opto-mechanical attachment to hold and illuminate a 96-well plate using a light-emitting-diode (LED) array. This LED light is transmitted through each well, and is then collected via 96 individual optical fibers. Captured images of this fiber-bundle are transmitted to our servers through a custom-designed app for processing using a machine learning algorithm, yielding diagnostic results, which are delivered to the user within ∼1 min per 96-well plate, and are visualized using the same app. We successfully tested this mobile platform in a clinical microbiology laboratory using FDA-approved mumps IgG, measles IgG, and herpes simplex virus IgG (HSV-1 and HSV-2) ELISA tests using a total of 567 and 571 patient samples for training and blind testing, respectively, and achieved an accuracy of 99.6%, 98.6%, 99.4%, and 99.4% for mumps, measles, HSV-1, and HSV-2 tests, respectively. This cost-effective and hand-held platform could assist health-care professionals to perform high-throughput disease screening or tracking of vaccination campaigns at the point-of-care, even in resource-poor and field-settings. Also, its intrinsic wireless connectivity can serve epidemiological studies, generating spatiotemporal maps of disease prevalence and immunity.

  11. Validation of a new hand-held electronic data capture method for continuous monitoring of subjective appetite sensations

    Directory of Open Access Journals (Sweden)

    King Neil

    2011-06-01

    Full Text Available Abstract Background When large scale trials are investigating the effects of interventions on appetite, it is paramount to efficiently monitor large amounts of human data. The original hand-held Electronic Appetite Ratings System (EARS was designed to facilitate the administering and data management of visual analogue scales (VAS of subjective appetite sensations. The purpose of this study was to validate a novel hand-held method (EARS II (HP® iPAQ against the standard Pen and Paper (P&P method and the previously validated EARS. Methods Twelve participants (5 male, 7 female, aged 18-40 were involved in a fully repeated measures design. Participants were randomly assigned in a crossover design, to either high fat (>48% fat or low fat (ad libitum lunch was provided immediately before completing a final set of appetite sensations. Results Repeated measures ANOVAs were conducted for ratings of hunger, fullness and desire to eat. There were no significant differences between P&P compared with either EARS or EARS II (p > 0.05. Correlation coefficients between P&P and EARS II, controlling for age and gender, were performed on Area Under the Curve ratings. R2 for Hunger (0.89, Fullness (0.96 and Desire to Eat (0.95 were statistically significant (p Conclusions EARS II was sensitive to the impact of a meal and recovery of appetite during the postprandial period and is therefore an effective device for monitoring appetite sensations. This study provides evidence and support for further validation of the novel EARS II method for monitoring appetite sensations during large scale studies. The added versatility means that future uses of the system provides the potential to monitor a range of other behavioural and physiological measures often important in clinical and free living trials. This study was registered as a clinical trial by Current Controlled Trials (Registration Number - ISRCTN47291569.

  12. Real-time neutron source localization and identification with a hand-held, volumetrically-sensitive, moderating-type neutron spectrometer

    Science.gov (United States)

    Hoshor, C. B.; Myers, E. R.; Oakes, T. M.; Young, S. M.; Currie, J. E.; Scott, P. R.; Miller, W. H.; Bellinger, S. L.; McGregor, D. S.; Caruso, A. N.

    2017-09-01

    Measuring source-dependent properties of free neutrons over a large neutron energy range, with hand-portable instrumentation, continues to push the frontier of neutron detection instrumentation design and analysis techniques. Building on prior work - C.B. Hoshor, et al., A portable and wide energy range semiconductor-based neutron spectrometer, Nucl. Instrum. Methods Phys. Res. A 803 (2015) 68-81 - which focused on demonstrating one-dimensional-based energy-dependent neutron measurement and analysis with a new class of solid-state moderating-type spectrometer, this work introduces two ;core; algorithmic methodologies that expand the analysis of neutron thermalization measurements to three spatial dimensions to determine the location and identity of neutron radiation sources in real time. Two extensions of these core methodologies are then proposed to further improve both the accuracy and reliability of source location and identity determinations with this new class of hand-held instrumentation. In 432 preliminary simulation tests, these method extensions are shown to decrease the average source location error by 64% and provide correct identity determinations in all test cases.

  13. Design of hand-held digital oscilloscope based on FPGA%基于 FPGA 的手持式数字示波器的设计∗

    Institute of Scientific and Technical Information of China (English)

    朱詠筠; 易艺; 郝建卫; 李俊凯; 王奕澄

    2015-01-01

    According to the weakness of traditional oscilloscope problems such as large volume and inconvenience,the project base on FPGA (Field Programmable Gate Array ) strong performance to develop a hand-held digital oscilloscope.The system use Altera FPGA as the main control chip to design a logic control circuit.And it use the Quartus II development tools and Verilog HDL language to describe the functions such as control logic, clock distribution,sampling buffer,trigger,frequency and amplitude measuring,etc.System design the SOPC Builder to build the Nios II soft core processor,and it through the C language programming to realize the touch control,display control functions.The test result shows that the oscilloscope system work is stable,and it has high performance and practicality.The project has reference value in the research of the hand-held digital oscilloscope.%针对传统示波器体积大、携带不便等问题,利用现场可编程门阵列(field programmable gate array,FPGA)强大的性能,研制一款基于 FPGA 的手持式数字示波器。系统以 Altera 公司 FPGA 为主控芯片组建逻辑控制电路,利用 Quartus II 开发工具以及 Verilog HDL 语言描述控制逻辑,实现时钟分配、采样缓冲、触发、测频、测幅等功能。用SOPC Builder 构建 Nios II 软核处理器,通过 C 语言编程实现触摸控制、显示控制等功能。经过实验测试表明,该示波器系统工作稳定,具有较高的性能指标和实用性,在手持式数字示波器的研制方面有较好的参考价值。

  14. Measurement of Visual Reaction Times Using Hand-held Mobile Devices

    Science.gov (United States)

    Mulligan, Jeffrey B.; Arsintescu, Lucia; Flynn-Evans, Erin

    2015-01-01

    Modern mobile devices provide a convenient platform for collecting research data in the field. But,because the working of these devices is often cloaked behind multiple layers of proprietary system software, it can bedifficult to assess the accuracy of the data they produce, particularly in the case of timing. We have been collecting datain a simple visual reaction time experiment, as part of a fatigue testing protocol known as the Psychomotor Vigilance Test (PVT). In this protocol, subjects run a 5-minute block consisting of a sequence of trials in which a visual stimulus appears after an unpredictable variable delay. The subject is required to tap the screen as soon as possible after the appearance of the stimulus. In order to validate the reaction times reported by our program, we had subjects perform the task while a high-speed video camera recorded both the display screen, and a side view of the finger (observed in a mirror). Simple image-processing methods were applied to determine the frames in which the stimulus appeared and disappeared, and in which the finger made and broke contact with the screen. The results demonstrate a systematic delay between the initial contact by the finger and the detection of the touch by the software, having a value of 80 +- 20 milliseconds.

  15. Development of hand-held nondestructive detection device for assessing meat freshness

    Science.gov (United States)

    Wei, Wensong; Peng, Yankun; Qiao, Lu

    2016-05-01

    Meat freshness is directly related to the health of consumers, and total volatile basic nitrogen (TVB-N) content is an important reference index for evaluating pork freshness. This paper attempted to measure TVB-N content for assessing pork meat freshness using a new self-developed portable and low cost detection device designed by ourselves basing on near infrared technique. The front-end part of this device was an integrated detection component containing a mini probe which was about 5cm in diameter circle. In the signal acquiring component, silicon photodiode detector was embedded in the center of light source in probe and spectral response range was 400-1100nm to receive diffuse light from pork meat surface in mini probe. The main circuits in this device included stabilized current supply circuit which was used to provide a stable power supply for each LED light source in probe and signal processing circuit which was utilized to complete signal amplification and A/D conversion, In addition, another vital function of the signal processing circuit was to analysis detection signals from mini probe in the detection component. For verifying this device performance, 58 pork samples with different freshness attributes and Multiple Linear Regression (MLR) mathematical method and ratio data processing algorithm were employed to build pork TVB-N content prediction model, and comparing with results from raw data model, the correlation coefficient of prediction and validation of TVB-N were 0.8027 and 0.7291 respectively, and the accuracy of predicting pork freshness was about 78.6%. This work demonstrates that it has the potential in nondestructive detection of TVB-N content in pork meat using this device, which can simplify related instruments design structure and reduce their development cost in future.

  16. Hip- and knee-strength assessments using a hand-held dynamometer with external belt-fixation are inter-tester reliable

    DEFF Research Database (Denmark)

    Thorborg, Kristian; Bandholm, Thomas; Hölmich, Per

    2013-01-01

    PURPOSE: In football, ice-hockey, and track and field, injuries have been predicted, and hip- and knee-strength deficits quantified using hand-held dynamometry (HHD). However, systematic bias exists when testers of different sex and strength perform the measurements. Belt-fixation of the dynamome......PURPOSE: In football, ice-hockey, and track and field, injuries have been predicted, and hip- and knee-strength deficits quantified using hand-held dynamometry (HHD). However, systematic bias exists when testers of different sex and strength perform the measurements. Belt...

  17. Hand-held dynamometry in patients with haematological malignancies: Measurement error in the clinical assessment of knee extension strength

    Directory of Open Access Journals (Sweden)

    Uebelhart Daniel

    2009-03-01

    Full Text Available Abstract Background Hand-held dynamometry is a portable and inexpensive method to quantify muscle strength. To determine if muscle strength has changed, an examiner must know what part of the difference between a patient's pre-treatment and post-treatment measurements is attributable to real change, and what part is due to measurement error. This study aimed to determine the relative and absolute reliability of intra and inter-observer strength measurements with a hand-held dynamometer (HHD. Methods Two observers performed maximum voluntary peak torque measurements (MVPT for isometric knee extension in 24 patients with haematological malignancies. For each patient, the measurements were carried out on the same day. The main outcome measures were the intraclass correlation coefficient (ICC ± 95%CI, the standard error of measurement (SEM, the smallest detectable difference (SDD, the relative values as % of the grand mean of the SEM and SDD, and the limits of agreement for the intra- and inter-observer '3 repetition average' and the 'highest value of 3 MVPT' knee extension strength measures. Results The intra-observer ICCs were 0.94 for the average of 3 MVPT (95%CI: 0.86–0.97 and 0.86 for the highest value of 3 MVPT (95%CI: 0.71–0.94. The ICCs for the inter-observer measurements were 0.89 for the average of 3 MVPT (95%CI: 0.75–0.95 and 0.77 for the highest value of 3 MVPT (95%CI: 0.54–0.90. The SEMs for the intra-observer measurements were 6.22 Nm (3.98% of the grand mean (GM and 9.83 Nm (5.88% of GM. For the inter-observer measurements, the SEMs were 9.65 Nm (6.65% of GM and 11.41 Nm (6.73% of GM. The SDDs for the generated parameters varied from 17.23 Nm (11.04% of GM to 27.26 Nm (17.09% of GM for intra-observer measurements, and 26.76 Nm (16.77% of GM to 31.62 Nm (18.66% of GM for inter-observer measurements, with similar results for the limits of agreement. Conclusion The results indicate that there is acceptable relative reliability

  18. Hand-Held Keyboard

    Science.gov (United States)

    1994-01-01

    The Data Egg, a prototype chord key-based data entry device, can be used autonomously or as an auxiliary keyboard with a personal computer. Data is entered by pressing combinations of seven buttons positioned where the fingers naturally fall when clasping the device. An experienced user can enter text at 30 to 35 words per minute. No transcription is required. The input is downloaded into a computer and printed. The Data Egg can be used by an astronaut in space, a journalist, a bedridden person, etc. It was developed by a Jet Propulsion Laboratory engineer. Product is not currently manufactured.

  19. Comparison of a digital and an optical analogue hand-held refractometer for the measurement of canine urine specific gravity.

    Science.gov (United States)

    Paris, J K; Bennett, A D; Dodkin, S J; Gunn-Moore, D A

    2012-05-05

    Urine specific gravity (USG) is used clinically as a measure of urine concentration, and is routinely assessed by refractometry. A comparison between optical analogue and digital refractometers for evaluation of canine urine has not been reported. The aim of this study was to compare a digital and an optical analogue hand-held refractometer for the measurement of canine USG, and to assess correlation with urine osmolality. Prospective study. Free-catch urine samples were collected from 285 hospitalised adult dogs, and paired USG readings were obtained with a digital and an optical analogue refractometer. In 50 dogs, urine osmolality was also measured using a freezing point depression osmometer. There was a small but statistically significant difference between the two refractometers (P<0.001), with the optical analogue refractometer reading higher than the digital refractometer (mean difference 0.0006, sd 0.0012). Paired refractometer measurements varied by <0.002 in 91.5 per cent of cases. The optical analogue and digital refractometer readings showed excellent correlation with osmolality (r=0.980 and r=0.977, respectively, P<0.001 in both cases). Despite statistical significance, the difference between the two refractometers is unlikely to be clinically significant. Both instruments provide an accurate assessment of USG in dogs.

  20. Four dimensional hybrid ultrasound and optoacoustic imaging via passive element optical excitation in a hand-held probe

    Energy Technology Data Exchange (ETDEWEB)

    Fehm, Thomas Felix; Razansky, Daniel, E-mail: dr@tum.de [Institute for Biological and Medical Imaging (IBMI), Helmholtz Zentrum München, Neuherberg (Germany); Faculty of Medicine, Technische Universität München, Munich (Germany); Deán-Ben, Xosé Luís [Institute for Biological and Medical Imaging (IBMI), Helmholtz Zentrum München, Neuherberg (Germany)

    2014-10-27

    Ultrasonography and optoacoustic imaging share powerful advantages related to the natural aptitude for real-time image rendering with high resolution, the hand-held operation, and lack of ionizing radiation. The two methods also possess very different yet highly complementary advantages of the mechanical and optical contrast in living tissues. Nonetheless, efficient integration of these modalities remains challenging owing to the fundamental differences in the underlying physical contrast, optimal signal acquisition, and image reconstruction approaches. We report on a method for hybrid acquisition and reconstruction of three-dimensional pulse-echo ultrasound and optoacoustic images in real time based on passive ultrasound generation with an optical absorber, thus avoiding the hardware complexity of active ultrasound generation. In this way, complete hybrid datasets are generated with a single laser interrogation pulse, resulting in simultaneous rendering of ultrasound and optoacoustic images at an unprecedented rate of 10 volumetric frames per second. Performance is subsequently showcased in phantom experiments and in-vivo measurements from a healthy human volunteer, confirming general clinical applicability of the method.

  1. The usefulness and limitations of hand-held refractometers in veterinary laboratory medicine: an historical and technical review.

    Science.gov (United States)

    George, Jeanne W.

    2001-01-01

    Medical hand-held refractometers have been used in veterinary practice since their development in the 1960s. They have become ubiquitous for the measurement of protein and urine solute concentrations because of their rapidity of analysis, ease of use, and relatively low cost. Refraction of light offers advantages for the determination of solute concentrations because the measurement requires no chemical alteration of the specimen. Numerous authors have reported that the results of protein estimation by refractometry for domestic mammals correlate well with those obtained by the biuret method, although others have reported both higher and lower refractometric results compared with biuret results. Major discrepancies between biuret and refractometric results have been reported for avian samples. Some of the variation in reported results may be due to differences in design by refractometer manufacturers. Another possible source may be variation in the biuret reagent mixture and assay conditions. Refractometers also can be used to calculate serum water concentration. A table that converts index of refraction to serum water concentration can be used to convert electrolyte concentration from mmol/L of serum to mmol/L of serum water, a more accurate indicator of effective electrolyte concentration. Refractometers are especially useful for determining urine specific gravity on veterinary samples because they require relatively small sample volumes. Specific gravity continues to be the most common unit for reporting total solids concentration. Some solutes, such as acetone, may cause false increases in specific gravity by refractometry, as they increase refraction but are less dense than water.

  2. Task difficulty and inertial properties of hand-held tools: An assessment of their concurrent effects on precision aiming.

    Science.gov (United States)

    Silva, Paula L; Bootsma, Reinoud J; Figueiredo, Priscilla Rezende Pereira; Avelar, Bruna Silva; de Andrade, André Gustavo Pereira; Fonseca, Sérgio T; Mancini, Marisa Cotta

    2016-08-01

    Aiming hand-held tools at targets in space entails adjustments in the dynamical organization of aiming patterns according to the required precision. We asked whether and how these adjustments are modified by the tool's mass distribution. Twelve participants performed reciprocal aiming movements with a 50-cm long wooden probe. Kinematic patterns of probe movements were used as a window into the behavioral dynamic underlying performance of a reciprocal aiming task. We crossed three levels of task difficulty (IDs 2.8, 4.5 and 6.1) with two types of probe varying in their mass distribution (proximal vs distal loading). Movement duration was affected by task difficulty and probe loading (shorter for larger targets and proximal probe loading). Progressive deviations from a sinusoidal movement pattern were observed as task difficulty increased. Such deviations were more pronounced with proximal probe loading. Results point to a higher degree of non-linearity in aiming dynamics when the probe was loaded proximally, which might reflect employment of additional perceptual-motor processes to control the position of its less stable tip at the vicinity of the targets. More generally, the effects of probe loading on aiming pattern and dynamics suggest that perceptual-motor processes responding to task level constraints are sensitive to, and not independent from, biomechanical, end-effector constraints.

  3. Effects of a new mild shampoo for preventing hair loss in Asian by a simple hand-held phototrichogram technique.

    Science.gov (United States)

    Baek, J H; Lee, S Y; Yoo, M; Park, W-S; Lee, S J; Boo, Y C; Koh, J-S

    2011-12-01

    This study was conducted to evaluate the effects of a commercially available shampoo in Korean subjects with alopecia using a simple hand-held phototrichogram technique. Forty-four subjects with alopecia were enrolled and forty subjects continued for 16 weeks. In the test group, total hair counts increased significantly at weeks 8 and 16, and the number of shedding hair significantly decreased at week 16. Terminal hair counts significantly increased at week 8. In the control group, hair thickness and the number of vellus hairs significantly decreased at week 16. The number of total hairs significantly increased in the test group than in the control group at weeks 8 and 16. The number of shedding hairs significantly decreased in the test group than in the control group at week 16. Visual assessment using clinical digital images showed that the number of total hairs appeared to increase although there was no statistical significance. In this study, it was found that the test shampoo could prevent hair loss.

  4. Test-retest reliabilities of hand-held dynamometer for lower-limb muscle strength in intellectual disabilities.

    Science.gov (United States)

    Wuang, Yee-Pay; Chang, Jyh-Jong; Wang, Min-Hung; Lin, Hsiu-Ching

    2013-08-01

    The primary purpose of this study was to investigate the test-retest reliabilities of hand-held dynamometer (HDD) for measuring lower-limb muscle strength in intellectual disabilities (ID). The other purposes were to: (1) compare the lower-limb muscle strength between children with and without ID; (2) probe the relationship between the muscle forces and agility performance in ID; and (3) explore the factors associated with muscle strength in ID. Sixty-one participants (30 boys and 31 girls; mean age=14.1 ± 3.3 year) were assessed by the HDD using a "make" test. The comparative group consisted of 63 typically developing children (33 boys and 30 girls; mean age=14.9 ± 2.1 year). The ID group demonstrated lower muscle groups than in typically developing group. Except for the ankle plantarflexors (ICC=0.69, SEM=0.72), test-retest analysis showed good intrarater reliability with ICC ranging from 0.81 to 0.96, and intrarater SEM values ranged from 0.40 to 0.57. The HDD has the potential to be a reliable tool for strength measurement in ID. Muscle strength was positively related to agility performance. Regression analysis indicated that height, weight, BMI, and activity level were significant predictors of muscle strength in ID.

  5. Forest Inventory with Terrestrial LiDAR: A Comparison of Static and Hand-Held Mobile Laser Scanning

    Directory of Open Access Journals (Sweden)

    Sébastien Bauwens

    2016-06-01

    Full Text Available The application of static terrestrial laser scanning (TLS in forest inventories is becoming more effective. Nevertheless, the occlusion effect is still limiting the processing efficiency to extract forest attributes. The use of a mobile laser scanner (MLS would reduce this occlusion. In this study, we assessed and compared a hand-held mobile laser scanner (HMLS with two TLS approaches (single scan: SS, and multi scan: MS for the estimation of several forest parameters in a wide range of forest types and structures. We found that SS is competitive to extract the ground surface of forest plots, while MS gives the best result to describe the upper part of the canopy. The whole cross-section at 1.3 m height is scanned for 91% of the trees (DBH > 10 cm with the HMLS leading to the best results for DBH estimates (bias of −0.08 cm and RMSE of 1.11 cm, compared to no fully-scanned trees for SS and 42% fully-scanned trees for MS. Irregularities, such as bark roughness and non-circular cross-section may explain the negative bias encountered for all of the scanning approaches. The success of using MLS in forests will allow for 3D structure acquisition on a larger scale and in a time-efficient manner.

  6. Inter-Tester Reliability and Precision of Manual Muscle Testing and Hand-Held Dynamometry in Lower Limb Muscles of Children with Spina Bifida

    Science.gov (United States)

    Mahony, Kate; Hunt, Adrienne; Daley, Deborah; Sims, Susan; Adams, Roger

    2009-01-01

    Reliability and measurement precision of manual muscle testing (MMT) and hand-held dynamometry (HHD) were compared for children with spina bifida. Strength measures were obtained of the hip flexors, hip abductors, and knee extensors of 20 children (10 males, 10 females; mean age 9 years 10 months; range: 5 to 15 years) by two experienced physical…

  7. Inter-Tester Reliability and Precision of Manual Muscle Testing and Hand-Held Dynamometry in Lower Limb Muscles of Children with Spina Bifida

    Science.gov (United States)

    Mahony, Kate; Hunt, Adrienne; Daley, Deborah; Sims, Susan; Adams, Roger

    2009-01-01

    Reliability and measurement precision of manual muscle testing (MMT) and hand-held dynamometry (HHD) were compared for children with spina bifida. Strength measures were obtained of the hip flexors, hip abductors, and knee extensors of 20 children (10 males, 10 females; mean age 9 years 10 months; range: 5 to 15 years) by two experienced physical…

  8. Beyond Textbook Illustrations: Hand-Held Models of Ordered DNA and Protein Structures as 3D Supplements to Enhance Student Learning of Helical Biopolymers

    Science.gov (United States)

    Jittivadhna, Karnyupha; Ruenwongsa, Pintip; Panijpan, Bhinyo

    2010-01-01

    Textbook illustrations of 3D biopolymers on printed paper, regardless of how detailed and colorful, suffer from its two-dimensionality. For beginners, computer screen display of skeletal models of biopolymers and their animation usually does not provide the at-a-glance 3D perception and details, which can be done by good hand-held models. Here, we…

  9. Yield of screening for atrial fibrillation in primary care with a hand-held, single-lead electrocardiogram device during influenza vaccination

    NARCIS (Netherlands)

    Kaasenbrood, Femke; Hollander, Monika; Rutten, Frans H.; Gerhards, Leo J.; Hoes, Arno W.; Tieleman, Robert G.

    2016-01-01

    Aims To assess the yield of screening for atrial fibrillation (AF) with a hand-held single-lead electrocardiogram (ECG) device during influenza vaccination in primary care in the Netherlands. Methods and results We used the MyDiagnostick to screen for AF in persons who participated in influenza vacc

  10. Maintaining radiation exposures as low as reasonably achievable (ALARA) for dental personnel operating portable hand-held x-ray equipment.

    Science.gov (United States)

    McGiff, Thomas J; Danforth, Robert A; Herschaft, Edward E

    2012-08-01

    Clinical experience indicates that newly available portable hand-held x-ray units provide advantages compared to traditional fixed properly installed and operated x-ray units in dental radiography. However, concern that hand-held x-ray units produce higher operator doses than fixed x-ray units has caused regulatory agencies to mandate requirements for use of hand-held units that go beyond those recommended by the manufacturer and can discourage the use of this technology. To assess the need for additional requirements, a hand-held x-ray unit and a pair of manikins were used to measure the dose to a simulated operator under two conditions: exposures made according to the manufacturer's recommendations and exposures made according to manufacturer's recommendation except for the removal of the x-ray unit's protective backscatter shield. Dose to the simulated operator was determined using an array of personal dosimeters and a pair of pressurized ion chambers. The results indicate that the dose to an operator of this equipment will be less than 0.6 mSv y⁻¹ if the device is used according to the manufacturer's recommendations. This suggests that doses to properly trained operators of well-designed, hand-held dental x-ray units will be below 1.0 mSv y⁻¹ (2% of the annual occupational dose limit) even if additional no additional operational requirements are established by regulatory agencies. This level of annual dose is similar to those reported as typical dental personnel using fixed x-ray units and appears to satisfy the ALARA principal for this class of occupational exposures.

  11. Limitations of Condensed Teaching Strategies to Develop Hand-Held Cardiac Ultrasonography Skills in Internal Medicine Residents.

    Science.gov (United States)

    Wilkinson, Jeffrey S; Barake, Walid; Smith, Chris; Thakrar, Amar; Johri, Amer M

    2016-08-01

    Advances in ultrasonographic technology have allowed for hand-held cardiac ultrasonography (HHCU) units that fit into a physician's laboratory coat. Recently, studies to educate internal medicine residents have shown promise. The optimal duration and methodology for teaching HHCU skills has not been established. Over a 1-year period, internal medicine residents were recruited during their cardiology ward rotation into a single-centre nonblinded randomized trial. The 2 condensed teaching strategies were (1) a conventional ward-based program and (2) a technology-driven simulation-based strategy. Outcomes were evaluated by (1) an objective structured clinical examination (OSCE) to evaluate interpretation ability (assessing both type I and type II error rates) and (2) demonstration of HHCU skills graded by 2 level III echocardiographers. Twenty-four internal medicine residents were randomized. After teaching, the conventional teaching group had a significant absolute increase in the ability to make a singular correct diagnosis (20%; P < 0.001). In the technology arm, making a singular correct diagnosis increased 24% from baseline (P = 0.001). Interpretation skill was not significantly different between groups. The false-positive rate increased by an absolute 14% and 17% in the conventional and technology groups, respectively (P = 0.079 and P = 0.008). Our findings suggest that HHCU interpretation skills improve after either a conventional ward-based or a technology-driven approach. However, our study emphasizes the important limitations of both teaching programs, because we detected a trend toward an increase in the false-positive rate after both approaches. This suggests that a short duration of training may not be sufficient for HHCU to be performed in a safe manner.

  12. Is Hand-Held Optical Coherence Tomography Reliable in Infants and Young Children with and without Nystagmus?

    Science.gov (United States)

    Lee, Helena; Proudlock, Frank; Gottlob, Irene

    2014-01-01

    Purpose To evaluate the reliability of the spectral domain hand-held OCT (HH-OCT) in assessing foveal morphology in children with and without nystagmus. Methods Forty-nine subjects with nystagmus (mean age 43.83 months; range 1-82 months) and 48 controls (mean age 43.02 months; range 0 to 83 months were recruited and scanned using HH-OCT (Bioptigen). A minimum of 2 separate volumetric scans on the same examination day of the fovea were obtained. The images were imported into ImageJ software where manual retinal layer segmentation of the central foveal B-scan was performed. Agreement between scans was assessed by determining the intraclass correlation coefficients (ICC) and Bland–Altman plots. Results Both the nystagmus and controls groups showed an excellent degree of reproducibility between two examinations with ICCs greater than 0.96 for central macular thickness (CMT) and greater than 0.8 for the outer nuclear layer and outer segment of the photoreceptors. The nerve fiber layer, ganglion cell layer, outer plexiform layer, inner segment of the photoreceptors and retinal pigment epithelium were less reliable with ICCs of less than 0.7. There was no difference in the reliability of scans obtained in children with nystagmus as compared to controls and both groups had good inter-eye agreement with ICCs greater than 0.94 for CMT. Conclusion We have shown for the first time that the HH-OCT provides reliable measurements in children with and without nystagmus. This is important as the HH-OCT will have a greater diagnostic and prognostic role in young children with nystagmus and other eye diseases in the future. PMID:24222299

  13. Demonstration of the B4C/NaIO4/PTFE Delay in the U.S. Army Hand-Held Signal

    Science.gov (United States)

    2015-05-20

    KEYWORDS: Pyrotechnic delay, Boron carbide, Periodate, Hand-held signal, Sustainable chemistry ■ INTRODUCTION Pyrotechnic delays provide controlled...UNIT NUMBER 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) Armament Research, Development and Engineering Center, U.S. Army RDECOM-ARDEC...Picatinny Arsenal, New Jersey 07806, United States 8. PERFORMING ORGANIZATION REPORT NUMBER 9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10

  14. Development and Performance of the W/Sb2O3/KIO4/Lubricant Pyrotechnic Delay in the US Army Hand-Held Signal

    Science.gov (United States)

    2013-01-01

    were obtained from Sigma Aldrich. Stearic acid (19–5010) was obtained from Hummel Croton. A Malvern Morphologi G3S optical micros- copy particle size...35 – 40 Full Paper J. C. Poret, A. P. Shaw, C. M. Csernica, K. D. Oyler, D. P. Estes equipped with a secondary electron imaging ( SEI ) detector. The...an ongoing area of research in our laboratories. Symbols and Abbreviations HHS Hand-held signal SEM Scanning electron microscopy SEI Secondary

  15. Improving the accuracy of hand-held X-ray fluorescence spectrometers as a tool for monitoring brominated flame retardants in waste polymers.

    Science.gov (United States)

    Guzzonato, A; Puype, F; Harrad, S J

    2016-09-01

    An optimised method for Br quantification as a metric of brominated flame retardant (BFR) concentrations present in Waste Electrical and Electronic Equipment (WEEE) polymers is proposed as an alternative to the sophisticated, yet time consuming GC-MS methods currently preferred. A hand-held X-ray fluorescence (XRF) spectrometer was validated with Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS). Customized standard materials of specific BFRs in a styrenic polymer were used to perform an external calibration for hand-held XRF ranging from 0.08 to 12 wt% of Br, and cross-checking with LA-ICP-MS having similar LODs (0.0004 wt% for LA-ICP-MS and 0.0011 wt% for XRF). The "thickness calibration" developed here for hand-held XRF and the resulting correction, was applied to 28 real samples and showed excellent (R(2) = 0.9926) accordance with measurements obtained via LA-ICP-MS. This confirms the validity of hand-held XRF as an accurate technique for the determination of Br in WEEE plastics. This is the first use of solid standards to develop a thickness-corrected quantitative XRF measurement of Br in polymers using LA-ICP-MS for method evaluation. Thermal desorption gas chromatography mass spectrometry (TD-GC-MS) was used to confirm the presence of specific BFRs in WEEE polymer samples. We propose that expressing limit values for BFRs in waste materials in terms of Br rather than BFR concentration (based on a conservative assumption about the BFR present), presents a practical solution to the need for an accurate, yet rapid and inexpensive technique capable of monitoring compliance with limit values in situ.

  16. Evaluation of U.S. Commercial-Off-the-Shelf Hand-Held Assays to Detect Opiate Pain Reliever Compounds in Multiple Biofluids

    Science.gov (United States)

    2016-09-01

    Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for fa iling to comply with a...abused for their intense euphoric effects and unfortunately, result in frequent cases of overdose, respiratory depression, and death . Based on...States caused 36,450 deaths and OPRs were involved in 14,800 of those deaths (73.8%).2 There is currently no fielded, validated hand-held assay

  17. Intra- and inter-rater reliability of isometric shoulder extensor and internal rotator strength measurements performed using a hand-held dynamometer.

    Science.gov (United States)

    Awatani, Takenori; Morikita, Ikuhiro; Shinohara, Junji; Mori, Seigo; Nariai, Miki; Tatsumi, Yasutaka; Nagata, Akinori; Koshiba, Hiroya

    2016-11-01

    [Purpose] The purpose of the present study was to establish the intra- and inter-rater reliability of measurement of extensor strength in the maximum shoulder abducted position and internal rotator strength in the 90° abducted and the 90° external rotated position using a hand-held dynamometer. [Subjects and Methods] Twelve healthy volunteers (12 male; mean ± SD: age 19.0 ± 1.1 years) participated in the study. The examiners were two students who had nonclinical experience with a hand-held dynamometer measurement. The examiners and participants were blinded to measurement results by the recorder. Participants in the prone position were instructed to hold the contraction against the ground reaction force, and peak isometric force was recorded using the hand-held dynamometer on the floor. Reliability was determined using intraclass correlation coefficients. [Results] The intra- and inter-rater reliability data were found to be "almost perfect". [Conclusion] This study investigated intra- and inter-rater reliability and reveald high reliability. Thus, the measurement method used in the present study can evaluate muscle strength by a simple measurement technique.

  18. Portable computing for taking part of the lab to the sample types of applications. From hand held personal digital assistants to smart phones for mobile spectrometry

    Science.gov (United States)

    Weagant, Scott; Karanassios, Vassili

    2015-06-01

    The use of portable hand held computing devices for the acquisition of spectrochemical data is briefly discussed using examples from the author's laboratory. Several network topologies are evaluated. At present, one topology that involves a portable computing device for data acquisition and spectrometer control and that has wireless access to the internet at one end and communicates with a smart phone at the other end appears to be better suited for "taking part of the lab to the sample" types of applications. Thus, spectrometric data can be accessed from anywhere in the world.

  19. (abstract) Applications of Long-wavelength 256x256 GaAs/Al&subx;Ga&sub1-x;As Quantum Well Infrared Photodetector Hand-held Camera

    Science.gov (United States)

    Gunapala, S. D.; Bandara, S. V.; Liu, J. K.; Sundaram, M.; Hong, W.; Shott, C. A.; Hoelter, T.; Laband, S.; James, J. B.

    1997-01-01

    A 9 (micro)m 256x256 hand-held quantum well infrared photodetector (QWIP) camera has been demonstrated. Excellent imagery, with a noise equivalent differential temperature (NE(gamma)) of 26 mK has been achieved. In this presentation, we discuss the development of this very sensitive long wavelength infrared (LWIR) camera based on a GaAs/AlGaAs QWIP focal plane array, its performance in quantum efficience, NA(gamma), minimum resolvable temperature (MRTD), uniformity, operability, and its applications.

  20. Hand-Held Femtogram Detection of Hazardous Picric Acid with 2 Hydrophobic Ag Nanopillar SERS Substrates and Mechanism of 3 Elasto-Capillarity

    DEFF Research Database (Denmark)

    Hakonen, Aron; Wang, FengChao; Andersson, Per Ola

    2017-01-01

    surface-enhanced Raman scattering (SERS) silver nanopillar substrates and hand-held Raman spectroscopy equipment. The advancing elasto-capillarity effects are explained by molecular dynamics simulations. We obtain a SERS PA detection limit on the order of 20 ppt, corresponding attomole amounts, which......Picric acid (PA) is a severe environmental and security risk due to its unstable, toxic, and explosive properties. It is also challenging to detect in trace amounts and in situ because of its highly acidic and anionic character. Here, we assess sensing of PA under nonlaboratory conditions using...

  1. Motion-compensated hand-held common-path Fourier-domain optical coherence tomography probe for image-guided intervention

    Science.gov (United States)

    Huang, Yong; Song, Cheol; Liu, Xuan; Kang, Jin U.

    2013-03-01

    A motion-compensated hand-held common-path Fourier-domain optical coherence tomography imaging probe has been developed for image guided intervention during microsurgery. A hand-held prototype instrument was designed and fabricated by integrating an imaging fiber probe inside a stainless steel needle which is attached to the ceramic shaft of a piezoelectric motor housed in an aluminum handle. The fiber probe obtains A-scan images. The distance information was extracted from the A-scans to track the sample surface distance and a fixed distance was maintained by a feedback motor control which effectively compensated hand tremor and target movements in the axial direction. Graphical user interface, real-time data processing, and visualization based on a CPU-GPU hybrid programming architecture were developed and used in the implantation of this system. To validate the system, free-hand optical coherence tomography images using various samples were obtained. The system can be easily integrated into microsurgical tools and robotics for a wide range of clinical applications. Such tools could offer physicians the freedom to easily image sites of interest with reduced risk and higher image quality.

  2. Enhancement of soil DNA extraction by the use of a hand held mixer Otimização da extração de DNA do solo utilizando um homogeneizador manual

    Directory of Open Access Journals (Sweden)

    Jefferson Luis da Silva Costa

    2003-12-01

    Full Text Available The efficiency of soil DNA extraction using a bead beater homogenizer (Biospec Products - Germany was compared to that obtained with a hand held mixer (Moulinex - Brazil. The hand held mixer costs 100 times less and extracted seven times more crude DNA than the bead beater.A eficiência da extração de DNA do solo utilizando um homogeneizador bead beater (Biospec Products - Alemanha foi comparada àquela obtida utilizando um homogeneizador manual (Moulinex - Brasil. O homogeneizador manual tem custo 100 vezes menor e revelou-se mais eficiente que o bead beater extraindo sete vezes mais DNA.

  3. Hand-Held UXO Discriminator

    Science.gov (United States)

    2010-04-01

    studies also included various capacitors , resistors, damping factors and coupling in both the S and T-termination modes. The accuracy of the model...be used as follows: (1) teflon, (2) polypropylene , (3) polystyrene, (4) polyethylene (foam is better than solid). 2.4 Fabrication and assembly...shields several different ways as well. These included floating ground, grounded to the data acquisition board, grounded to 24 V capacitor , with

  4. Hand-held survey probe

    Science.gov (United States)

    Young, Kevin L [Idaho Falls, ID; Hungate, Kevin E [Idaho Falls, ID

    2010-02-23

    A system for providing operational feedback to a user of a detection probe may include an optical sensor to generate data corresponding to a position of the detection probe with respect to a surface; a microprocessor to receive the data; a software medium having code to process the data with the microprocessor and pre-programmed parameters, and making a comparison of the data to the parameters; and an indicator device to indicate results of the comparison. A method of providing operational feedback to a user of a detection probe may include generating output data with an optical sensor corresponding to the relative position with respect to a surface; processing the output data, including comparing the output data to pre-programmed parameters; and indicating results of the comparison.

  5. Reliability of Isometric Knee Extension Muscle Strength Measurements of Healthy Elderly Subjects Made with a Hand-held Dynamometer and a Belt.

    Science.gov (United States)

    Katoh, Munenori; Isozaki, Koji

    2014-12-01

    [Purpose] The purpose of this study was to examine the reliability of three isometric knee extension strength measurements (IKE) made with a hand-held dynamometer (HHD) and a belt of healthy elderly living in the community as subjects. [Subjects] The subject cohort consisted of 186 healthy elderly people, aged 65 to 79 years, living in local communities. [Methods] IKE of the leg subjects used to kick a ball was measured. IKE of each subject was measured three times using an HHD-belt at intervals of 30 seconds. The reliability of the larger of the first two measurements (LV2) as well as the third measurement (3V) was investigated. [Results] The intraclass correlation coefficients [ICC (1, 1)] for LV2 and 3V were 0.955. Bland-Altman analysis showed a fixed bias, and the limits of agreement ranged from -5.6 to 4.6. [Conclusion] The ICC results show that the test-retest reproducibility of IKE measurements of healthy elderly subjects using an HHD-belt is high. However, Bland-Altman analysis showed a fixed bias, suggesting the need for three measurements.

  6. Inter-tester Reliability of the Hand-held dynamometer and the Leg Extensor Power Rig applied on Patients after Total Hip Arthroplasty

    DEFF Research Database (Denmark)

    Mikkelsen, Lone Ramer; Mechlenburg, Inger; Petersen, Annemette Krintel

    INTRODUCTION: Rehabilitation has an increasing focus on intensive resistance training early after joint replacement (1,2). This increases the requests for measuring changes in the muscle strength and muscle power over time. Hand-held dynamometer (HHD) is a device used to measure isometric muscle...... strength and Leg Extensor Power Rig (LEPR) is a tool for measuring muscle power. OBJECTIVES: To test the inter-tester reliability of the HHD in hip abduction and the LEPR in Total Hip Arthroplasty (THA) patients. METHODS: Two groups each consisting 20 subjects were included. Mean age was 68.4 years. All...... the two testers (p=0.62) and the two tests (0.14); ICC=0.91 (95% CI: 0.79;0.96); LOA=±34Watt. CONCLUSION: The relative reliability was acceptable for both HHD and LEPR. The absolute reliability showed that a change in the muscle strength/power above 18 Newton or 34 Watt can be counted as a real change...

  7. Inter-tester Reliability of the Hand-held dynamometer and the Leg Extensor Power Rig applied on Patients after Total Hip Arthroplasty

    DEFF Research Database (Denmark)

    Mikkelsen, Lone Ramer; Petersen, Annemette Krintel; Mikkelsen, Søren Søndergaard

    Background: Rehabilitation has an increasing focus on intensive resistance training early after joint replacement. This increases the requests for measuring changes in the muscle strength and muscle power over time. Hand-held dynamometer (HHD) is a device used to measure isometric muscle strength...... and Leg Extensor Power Rig (LEPR) is a tool for measuring muscle power. Purpose / Aim of Study: To test the inter-tester reliability of the HHD and the LEPR in Total Hip Arthroplasty (THA) patients. Materials and Methods: Two groups each consisting 20 subjects were included. Mean age was 68.4 years. All...... between the two testers (p=0.62) and the two tests (0.14); ICC=0.91 (95% CI: 0.79;0.96); LOA=±34Watt. Conclusions: The relative reliability was acceptable for both HHD and LEPR. The absolute reliability showed that a change in the muscle strength/power above 18 Newton or 34 Watt can be counted as a real...

  8. The use of hand-held 35 mm color infrared imagery for estimates of suspended solids - A progress report. [in water pollution monitoring

    Science.gov (United States)

    Miller, W. F.; Whisler, F. D.; Robinette, H. R.; Finnie, D.; Cannon, T.

    1975-01-01

    A cost-effective aerial surveillance technique is proposed for detection and identification of suspended solids which would be operational for both governmental monitoring organizations and private individuals operating catfish farms. Sixteen catfish ponds were flown daily for seven days using two hand-held 35 mm cameras with both Kodachrome X and Ektachrome infrared film. Hue, value, and chroma designations were recorded for each pond on each date by three interpreters, and the accepted color was that recorded by at least two of the interpreters, or if there was a three hue range, the median was accepted. Relations between suspended solids and color designations were analyzed graphically, and chroma was discarded due to an apparent lack of correlation. The data obtained were then analyzed by multiple regression. Significant correlations were revealed between hue and value and total and inorganic suspended solids. If perfected, this technique could be developed to sufficent accuracy for large-scale reconnaissance surveys to monitor the quality of rivers and streams.

  9. The use of hand-held 35 mm color infrared imagery for estimates of suspended solids - A progress report. [in water pollution monitoring

    Science.gov (United States)

    Miller, W. F.; Whisler, F. D.; Robinette, H. R.; Finnie, D.; Cannon, T.

    1975-01-01

    A cost-effective aerial surveillance technique is proposed for detection and identification of suspended solids which would be operational for both governmental monitoring organizations and private individuals operating catfish farms. Sixteen catfish ponds were flown daily for seven days using two hand-held 35 mm cameras with both Kodachrome X and Ektachrome infrared film. Hue, value, and chroma designations were recorded for each pond on each date by three interpreters, and the accepted color was that recorded by at least two of the interpreters, or if there was a three hue range, the median was accepted. Relations between suspended solids and color designations were analyzed graphically, and chroma was discarded due to an apparent lack of correlation. The data obtained were then analyzed by multiple regression. Significant correlations were revealed between hue and value and total and inorganic suspended solids. If perfected, this technique could be developed to sufficent accuracy for large-scale reconnaissance surveys to monitor the quality of rivers and streams.

  10. A combination of hand-held models and computer imaging programs helps students answer oral questions about molecular structure and function: a controlled investigation of student learning.

    Science.gov (United States)

    Harris, Michelle A; Peck, Ronald F; Colton, Shannon; Morris, Jennifer; Chaibub Neto, Elias; Kallio, Julie

    2009-01-01

    We conducted a controlled investigation to examine whether a combination of computer imagery and tactile tools helps introductory cell biology laboratory undergraduate students better learn about protein structure/function relationships as compared with computer imagery alone. In all five laboratory sections, students used the molecular imaging program, Protein Explorer (PE). In the three experimental sections, three-dimensional physical models were made available to the students, in addition to PE. Student learning was assessed via oral and written research summaries and videotaped interviews. Differences between the experimental and control group students were not found in our typical course assessments such as research papers, but rather were revealed during one-on-one interviews with students at the end of the semester. A subset of students in the experimental group produced superior answers to some higher-order interview questions as compared with students in the control group. During the interview, students in both groups preferred to use either the hand-held models alone or in combination with the PE imaging program. Students typically did not use any tools when answering knowledge (lower-level thinking) questions, but when challenged with higher-level thinking questions, students in both the control and experimental groups elected to use the models.

  11. Lactate study using umbilical cord blood: agreement between Lactate Pro hand-held devices with blood gas analyser and evaluation of lactate stability over time.

    Science.gov (United States)

    Su, Tina Y; Reece, Mifanwy; Chua, Seng C

    2013-08-01

    Lactate measurements have become increasingly preferred over pH analysis in the evaluation of fetal acidaemia in labour. In a busy labour ward, often the umbilical cord may be sampled late and as a result yield unreliable lactate values. To investigate the agreement of hand-held device Lactate Pro with a reference method blood gas analyser and evaluate the stability of umbilical cord lactate values over time. Prospective study carried out at elective caesarean section. Sixteen umbilical cords were double clamped immediately after delivery with paired arterial and venous blood samples collected by an independent researcher, at varying time intervals, and processed by two Lactate Pro devices and a reference method blood gas analyser. A significant difference of -0.41 to 0.10 mmol/L was found when different groups of Lactate Pro devices were compared with blood gas analyser at lactate values up to 5.70 mmol/L, with average lactate value of 2.45 mmol/L. Over time, there is progressive rise in lactate samples obtained from the umbilical cord. Lactate Pro devices have a significant difference, but when used in clinical practice on cord blood after delivery, this is unlikely to be meaningful. In intrapartum fetal surveillance, a systematic overestimation might lead to unnecessary intervention. It is possible to retrospectively predict the likely level of lactate at birth in delayed cord samples. © 2013 The Authors ANZJOG © 2013 The Royal Australian and New Zealand College of Obstetricians and Gynaecologists.

  12. What is the most cost-effective strategy to screen for left ventricular systolic dysfunction: natriuretic peptides, the electrocardiogram, hand-held echocardiography, traditional echocardiography, or their combination?

    Science.gov (United States)

    Galasko, Gavin I W; Barnes, Sophie C; Collinson, Paul; Lahiri, Avijit; Senior, Roxy

    2006-01-01

    To assess the screening characteristics and cost-effectiveness of screening for left ventricular systolic dysfunction (LVSD) in community subjects. A total of 1392 members of the general public and 928 higher risk subjects were randomly selected from seven community practices. Attending subjects underwent an ECG, N-terminal pro-brain natriuretic peptide (NTproBNP) serum levels, and traditional echocardiography (TE). A total of 533 consecutive subjects underwent hand-held echocardiography (HE). The screening characteristics and cost-effectiveness (cost per case of LVSD diagnosed) of eight strategies to predict LVSD (LVSD cost-effective, screening low-risk subjects least cost-effective. TE screening was the least cost-effective strategy. NTproBNP screening gave similar cost savings to ECG screening; HE screening greater cost-savings, and HE screening following NTproBNP or ECG pre-screening the greatest cost-savings, costing approximately 650 Euros per case of LVSD diagnosed in high-risk subjects (63% cost-savings vs.TE). Thus several different modalities allow cost-effective community-based screening for LVSD, especially in high-risk subjects. Such programmes would be cost-effective and miss few cases of LVSD in the community.

  13. Hand-held echocardiography in the setting of pre-operative cardiac evaluation of patients undergoing non-cardiac surgery: results from a randomized pilot study.

    Science.gov (United States)

    Cavallari, Ilaria; Mega, Simona; Goffredo, Costanza; Patti, Giuseppe; Chello, Massimo; Di Sciascio, Germano

    2015-06-01

    Transthoracic echocardiography is not a routine test in the pre-operative cardiac evaluation of patients undergoing non-cardiac surgery but may be considered in those with known heart failure and valvular heart disease or complaining cardiac symptoms. In this setting, hand-held echocardiography (HHE) could find a potential application as an alternative to standard echocardiography in selected patients; however, its utility in this context has not been investigated. The aim of this pilot study was to evaluate the conclusiveness of HHE compared to standard echocardiography in this subset of patients. 100 patients scheduled for non-cardiac surgery were randomized to receive a standard exam with a Philips Ie33 or a bedside evaluation with a pocket-size imaging device (Opti-Go, Philips Medical System). The primary endpoint was the percentage of satisfactory diagnosis at the end of the examination referred as conclusiveness. Secondary endpoints were the mean duration time and the mean waiting time to perform the exams. No significant difference in terms of conclusiveness between HHE and standard echo was found (86 vs 96%; P = 0.08). Mean duration time of the examinations was 6.1 ± 1.2 min with HHE and 13.1 ± 2.6 min with standard echocardiography (P cardiac surgery, since it provided similar information but it was faster and earlier performed compared to standard echocardiography.

  14. Better self-management and meaningful activities thanks to tablets? Development of a person-centered program to support people with mild dementia and their carers through use of hand-held touch screen devices

    NARCIS (Netherlands)

    Kerkhof, Y.J.; Graff, M.J.L.; Bergsma, A.; Vocht, H.H. de; Droes, R.M.

    2016-01-01

    BACKGROUND: To offer good support to people with dementia and their carers in an aging and Internet society the deployment of hand-held touch screen devices, better known as tablets, and its applications (apps) can be viable and desirable. However, at the moment it is not clear which apps are usable

  15. Evaluation of a hand-held blood gas analyzer for rapid determination of blood gases, electrolytes and metabolites in intensive care setting.

    Science.gov (United States)

    Luukkonen, Antti A M; Lehto, Tiina M; Hedberg, Pirjo S M; Vaskivuo, Tommy E

    2016-04-01

    Intensive care units, operating rooms, emergency departments, and neonatology units need rapid measurements of blood gases, electrolytes, and metabolites. These analyses can be performed in a central laboratory or at the clinic with traditional or compact cassette-type blood gas analyzers such as the epoc blood gas testing system for analyzing whole blood samples at the bedside. In this study, the performance and interchangeability of a hand-held epoc blood gas analyzer was evaluated. The analytical performance of the epoc analyzer was evaluated by determining within-and between-run precisions. The accuracy of the epoc analyzer was assessed by comparing patient results from the device with those obtained with the Siemens Rapidlab 1265 and Rapidpoint RP500 and Siemens Dimension Vista and Sysmex XE-2100 analyzers. The following parameters were measured: pH, pCO2, pO2, Hb (calc), Na+, K+, iCa2+, glucose, and lactate. The CV% of the epoc's between-day imprecision for the various parameters varied from 0.4 to 8.6. The within-run imprecision CV% varied from 0.6 to 5.2. The squared regression coefficient (R2) between the epoc and RL1265 varied from 0.94 to 0.99, with the exception of Na+ and Ca2+ (R2≥0.82). The correlation (R2) of Na+ and K+ between epoc and Dimension Vista was 0.73 and 0.89, respectively. The correlation (R2) of Hb between the epoc and the XE-2100 analyzer was 0.94. With most of the measured blood gas parameters, the epoc analyzer correlated well with reference techniques. The epoc analyzer is suitable for rapid measurement of the blood gases, the electrolytes, and the metabolites in the ICU.

  16. An Approach to Precise Nitrogen Management Using Hand-Held Crop Sensor Measurements and Winter Wheat Yield Mapping in a Mediterranean Environment

    Directory of Open Access Journals (Sweden)

    Lucía Quebrajo

    2015-03-01

    Full Text Available Regardless of the crop production system, nutrients inputs must be controlled at or below a certain economic threshold to achieve an acceptable level of profitability. The use of management zones and variable-rate fertilizer applications is gaining popularity in precision agriculture. Many researchers have evaluated the application of final yield maps and geo-referenced geophysical measurements (e.g., apparent soil electrical conductivity-ECa as a method of establishing relatively homogeneous management zones within the same plot. Yield estimation models based on crop conditions at certain growth stages, soil nutrient statuses, agronomic factors, moisture statuses, and weed/pest pressures are a primary goal in precision agriculture. This study attempted to achieve the following objectives: (1 to investigate the potential for predicting winter wheat yields using vegetation measurements (the Normalized Difference Vegetation Index—NDVI at the beginning of the season, thereby allowing for a yield response to nitrogen (N fertilizer; and (2 evaluate the feasibility of using inexpensive optical sensor measurements in a Mediterranean environment. A field experiment was conducted in two commercial wheat fields near Seville, in southwestern Spain. Yield data were collected at harvest using a yield monitoring system (RDS Ceres II-volumetric meter installed on a combine. Wheat yield and NDVI values of 3498 ± 481 kg ha−1 and 0.67 ± 0.04 nm nm−1 (field 1 and 3221 ± 531 kg ha−1 and 0.68 ± 0.05 nm nm−1 (field 2 were obtained. In both fields, the yield and NDVI exhibited a strong Pearson correlation, with rxy = 0.64 and p < 10−4 in field 1 and rxy = 0.78 and p < 10−4 in field 2. The preliminary results indicate that hand-held crop sensor-based N management can be applied to wheat production in Spain and has the potential to increase agronomic N-use efficiency on a long-term basis.

  17. Reliability of hand-held dynamometry for measurement of lower limb muscle strength in children with Duchenne and Becker muscular dystrophy

    Directory of Open Access Journals (Sweden)

    Wei SHI

    2015-05-01

    Full Text Available Objective To determine the reliability of hand-held dynamometry (HHD for lower limb isometric muscle strength measurement in children with Duchenne and Becker muscular dystrophy (DMD/BMD.  Methods A total of 21 children [20 males and one female; mean age was (7.88 ± 2.87 years, ranging between 3.96-14.09 years; mean age at diagnosis was (5.88 ± 2.88 years, ranging between 1.35-12.89 years; mean height was (120.64 ± 16.30 cm, ranging between 97-153 cm; mean body weight was (24.62 ± 9.05 kg, ranging between 14-50 kg] with DMD (19/21 and BMD (2/21 were involved from Rehabilitation Center of Children's Hospital of Fudan University. The muscle strength of hip, knee and ankle was measured by HHD under standardized test methods. The test-retest results were compared to determine the inter-test reliability, and the results among testers were compared to determine the inter-tester reliability.  Results HHD showed fine inter-tester reliability (ICC = 0.762-0.978 and inter-test reliability (ICC = 0.690-0.938 in measuring lower limb muscle strength of children with DMD/BMD. Results also showed relatively poor reliability in distal muscle groups (foot plantar flexion and dorsiflexion.  Conclusions HHD, showing fine inter-tester and inter-test reliability in measuring the lower limb muscle strength of children with DMD/BMD, can be used in monitoring muscle strength changing and assessing effects of clinical interventions. DOI: 10.3969/j.issn.1672-6731.2015.05.009

  18. Preoperative scintigraphic and intraoperative scintimetric localization of parathyroid adenoma with cationic Tc-99m complexes and a hand-held gamma-probe.

    Science.gov (United States)

    Gallowitsch, H J; Fellinger, J; Kresnik, E; Mikosch, P; Pipam, W; Lind, P

    1997-01-01

    The aim of our study was to evaluate the possibility of intraoperative scintimetric detection of parathyroid adenomas with Tc-99m labelled tracers for its usefulness in dystropic or ectopic adenomas. 12 women with biochemically confirmed hyperparathyroidism were included in our study. After injection of 370 MBq Tc-99m tetrofosmin e.g. sestamibi, preoperative scintigraphy (double phase study and SPECT) was performed and T/NT ratios were evaluated for early, delayed and SPECT images. Surgery was performed using a hand-held gamma-probe after preoperative injection of 555-925 MBq Tc-99m tetrofosmin e.g. sestamibi. Count rates (cts/10 sec) were measured and used for calculating in situ- and ex situ-T/NT ratios. In 9 out of 12 patients, adenoma could be detected on static images. Mean T/NT ratios for Tc-99m tetrofosmin were 1.29 for early and 1.23 for delayed images, respectively 1.39 and 1.23 for early and delayed Tc-99m sestamibi scan. Three cases could only be detected with SPECT reconstruction, 11 of 12 parathyroid adenomas could be confirmed intra-operatively. SPECT with Tc-99m labelled cationic complexes showed advantages in detection, precise localization and contrast over static scintigraphy and should therefore be performed at least in cases with poor or no uptake on static images to avoid failures in detection of deeply sited, dislocated glands or adenomas with low uptake. Intraoperative localization and confirmation of parathyroid adenoma with Tc-99m labelled cationic complexes and a gamma probe is possible an 1 may be useful in case of dys- or ectopic adenoma by influencing surgical approach and operating time.

  19. VALIDATION OF ANSI N42.34 AMERICAN NATIONAL STANDARD PERFORMANCE CRITERIA FOR HAND-HELD INSTRUMENTS FOR THE DETECTION AND IDENTIFICATION OF RADIONUCLIDES

    Energy Technology Data Exchange (ETDEWEB)

    Lorier, T.

    2014-09-03

    SRNL’s validation of ANSI N42.34-D6 for the Domestic Nuclear Detection Office (DNDO) was performed utilizing one hand-held instrument (or RID) – the FLIR identiFINDER 2. Each section of the standard was evaluated via a walk-through or test. NOTE: In Table 1, W = walk-through and T = test, as directed by the Domestic Nuclear Detection Office (DNDO). For a walk-through, the experiment was either setup or reviewed for setup; for a test, the N42.34-D6 procedures were followed with some exceptions and comments noted. SRNL is not fully able to evaluate a RID against Sections 7 (Environmental), 8 (Electromagnetic), and 9 (Mechanical) of N42.34, so those portions of this validation were done in collaboration with Qualtest, Inc. in Orlando, Florida. The walk-throughs and tests of Sections 7, 8, and 9 were performed in Qualtest, Inc. facilities with SRNL providing radiological sources as necessary. Where applicable, assessment results and findings of the walk-throughs and tests were recorded on datasheets and a validation summary is provided. A general comment pertained to test requirements found in another standard and referenced in N42.34-D6. For example, step 1 of the test method in section 8.1.2 states “RF test set up information can be found in IEC 61000-4-3.” It is recommended that any information from other standards necessary for conducting the tests within N42.34 should be posted in N42.34 for simplicity and to prevent the user from having to peruse other documents. Another general comment, as noted by Qualtest, is that a tolerance reference is not listed for each test in sections 7-9. Overall, the N42.34-D6 was proven to be practicable, but areas for improvement and recommendations were identified for consideration prior to final ballot submittal.

  20. A hand-held bus charging and information statistics system%一种手持式公交车收费及信息统计装置

    Institute of Scientific and Technical Information of China (English)

    叶鼎晟; 张凯

    2012-01-01

    A hand-held bus charging and information statistics system is presented, according to passengers ride the journey to collect fees, instead of the traditional sectional charge, it mainly used for counting recent number of Passengers and each station number of getting on and off. By the wireless data transmission module, the information can be sent to platform as reference for waiting passengers. This kind of device makes public travel conveniently because of the compatibility of existing public transit card. The device can store and Summarize passenger information in the bus. Based on the Analysis of traffic flow and passengers flow information, it is also convenient for Bus Company to dispatch and count.%提出了一种手持式公交车收费及信息统计装置,根据乘客所乘坐路程来进行收费,而不是传统的分段式收费,同时可以统计各站上车人数,每站的下车人数以及目前车内人数等;然后通过无线数据传输模块还可以把车上的信息发送到站台上供等车的乘客参考,并且这种装置对于现存的公交卡也能进行读写,为市民绿色出行提供便利。此种装置能将公交车上的客流信息进行储存、汇总,通过对车流、人流的信息进行分析,还能方便公交车公司进行调度和统计。

  1. Evaluation of a hand-held far-ultraviolet radiation device for decontamination of Clostridium difficile and other healthcare-associated pathogens

    Directory of Open Access Journals (Sweden)

    Nerandzic Michelle M

    2012-05-01

    Full Text Available Abstract Background Environmental surfaces play an important role in transmission of healthcare-associated pathogens. There is a need for new disinfection methods that are effective against Clostridium difficile spores, but also safe and rapid. The Sterilray™ Disinfection Wand device is a hand-held room decontamination technology that utilizes far-ultraviolet radiation (185-230 nm to kill pathogens. Methods We examined the efficacy of disinfection using the Sterilray device in the laboratory, in rooms of hospitalized patients, and on surfaces outside of patient rooms (i.e. keyboards and portable medical equipment. Cultures for C. difficile, methicillin-resistant Staphylococcus aureus (MRSA, and vancomycin-resistant Enterococcus (VRE were collected from commonly-touched surfaces before and after use of the Sterilray device. Results On inoculated surfaces in the laboratory, application of the Sterilray device at a radiant dose of 100 mJ/cm2 for ~ 5 seconds consistently reduced recovery of C. difficile spores by 4.4 CFU log10, MRSA by 5.4 log10CFU and of VRE by 6.9 log10CFU. A >3 log10 reduction of MRSA and VRE was achieved in ~2 seconds at a lower radiant dose, but killing of C. difficile spores was significantly reduced. On keyboards and portable medical equipment that were inoculated with C. difficile spores, application of the Sterilray device at a radiant dose of 100���mJ/cm2 for ~ 5 seconds reduced contamination by 3.2 log10CFU. However, the presence of organic material reduced the lethal effect of the far-UV radiation. In hospital rooms that were not pre-cleaned, disinfection with the Sterilray device significantly reduced the frequency of positive C. difficile and MRSA cultures (P =0.007. Conclusions The Sterilray™ Disinfection Wand is a novel environmental disinfection technology that rapidly kills C. difficile spores and other healthcare-associated pathogens on surfaces. However, the presence of organic matter

  2. Design of Hand-held Picking Device for Brasenia Schreber Aquatic Plant%水生莼菜植物手动控制采摘器的设计

    Institute of Scientific and Technical Information of China (English)

    夏春风; 马燕平; 沈长生; 张宇

    2014-01-01

    针对水生莼菜植物手工采摘辛苦、效率低下等问题,设计了一种手动控制的莼菜采摘器,分析了其工作原理,给出莼菜切割力计算公式。该采摘器由人手驱动,通过向后逐渐收紧手柄,使与手柄相连的钢丝后移,后移的钢丝再带动直槽形钢片、刀片支架等运动,使主、副刀片闭合,完成莼菜切割运动。然后,操作者将采摘装置移出水面,将切割好的莼菜移到收集装置的网兜上方,松开手柄,主、副刀片自动松开,使莼菜自然落入网兜中。实验表明,该采摘器能达到设计要求,且可靠性高、使用方便、控制灵活,对莼菜和水体均不造成污染。%Am at to solve the problem that brasenia schreberi aquatic plant picked hard and low efficiency by hand , a hand-held picking device for brasenia schreber was designed .Its working principle was introduced , and the calculation formula of brasenia schreberi cutting force was presented .The picking device was driven by hand and by tightening the handle backwards , so that the steel wire connected to the handle moved backward ,the back steel wire drove the piece of straight-shaped steel and the blade holder , closed the main and auxiliary blade and completed cutting brasenia schreberi .Then , the picking device was moved out of the water by the operator , the cut brasenia schreberi was moved to the above net of collecting device ,fell into the net naturally by loosening the handle and releasing the main and auxiliary blade automatically .The picking device of design and manufacture can meet the design requirements through practice test and does not pollute the water and brasenia schreberi .The picking device has the advantages of high reliability , conven-ient to use ,flexible control .

  3. 手持式电动工具产品日常检测不合格项目及原因浅析%Unqualified Items and Cause Analysis in Hand-held Electric Tools Routine Test

    Institute of Scientific and Technical Information of China (English)

    高家材; 陈其勇; 郑小龙

    2015-01-01

    基于日常检测尤其是CCC检测和监督抽查以及各类地方抽查的试验,介绍手持式电动工具在测试过程中常见的不合格项目,对不合格项目的产生原因进行简要分析.%Based on the routine test, especially the CCC certification, supervision and various local spot check, introduce the common unqualified items during the process in the hand-held electric tools test, and analyze the cause of the unqualified items briefly.

  4. 简介手持式电动工具爬电距离和电气间隙的测量试验%The Measuring Test of Creepage Distance and Clearance on Hand-held Electric Tools

    Institute of Scientific and Technical Information of China (English)

    戴胜岳

    2014-01-01

    基于对《手持式电动工具的安全第一部分:通用要求》具体章节的理解,通过图例方式对爬电距离和电气间隙测量的试验方法和注意事项做简单介绍。%According to the understanding of Safety of hand-held moter-operated electric tools-part 1:General requirement, to make a simple introduction of creepage distance and clearance test methods and notes by illustration.

  5. 便携式电子测力计在肌力评定中的应用进展%Application Progress of Hand-held Dynamometry in Muscle Strength Assessment

    Institute of Scientific and Technical Information of China (English)

    关润泽; 赵鹏

    2016-01-01

    Objective and accurate evaluation of muscle strength is the core foundation of developing rehabil⁃itation programs, determining the rehabilitation goals, evaluating the treatment effects. Understand the lat⁃est research results of muscle strength testing, comparative study of manual muscle testing and isokinetic testing, hand-held dynamometer testing of a variety of muscle strength method. Results showed that hand-held dynamometer testing compared to traditional manual muscle strength testing more quantitative, and hand-held dynamometer muscle strength measurement value associated with isokinetic testing of strong(r=0.91),and the easy to operate, strong applicability, can effectively discharge effect on muscle strength assess⁃ment of muscular tension. View of hand-held dynamometer with merits of quantitative, accurate and easy to carry, can be widely used in rehabilitation assessment, screening function and monitoring training effect, so as to improve the effectiveness of rehabilitation.%客观准确地肌力评定,是制定康复治疗计划、确定康复目标、评价治疗效果的核心基石。了解现阶段肌力检测的最新研究成果,对比研究徒手肌力检测、等速仪器测试、便携式电子测力计测试等多种肌力检测方法。结果显示,便携式电子测力计相对于传统徒手肌力检测更为量化;同时便携式电子测力计肌力测量值与等速仪器测试相关性较强(r=0.91),且易于操作,应用性较强,能有效排出肌张力对肌力评定的影响。因而鉴于便携式电子测力计有定量、精确和便于携带的优点,能广泛应用于康复评定、功能筛查和训练效果监控过程中。

  6. Micro-fluidic (Lab-on the- Chip) PCR Array Cartridge for Biological Screening in a Hand Held Device: FInal Report for CRADA no 264. PNNL-T2-258-RU with CombiMatrix Corp

    Energy Technology Data Exchange (ETDEWEB)

    Rainina, Evguenia I.

    2010-10-31

    The worldwide emergence of both new and old diseases resulting from human expansion and also human and materials mobility has and will continue to place stress on both medical and clinical diagnostics. The classical approach to bioagents detection involves the use of differential metabolic assays to determine species type in the case of most bacteria, or the use of cell culture and electron microscopy to diagnose viruses and some bacteria that are intracellular parasites. The long-term goal in bioagent detection is to develop a hand-held instrument featuring disposable cartridges which contain all the necessary reagents, reaction chambers, waste chambers, and micro-fluidics to extract, concentrate, amplify, and analyze nucleic acids. This GIPP project began development of a sensory platform using nucleic-acid based probes. Although research was not completed, initial findings indicated that an advanced sensing device could theoretically be built on a DNA/RNA-based technology platform.

  7. 手持式电动工具防止触及带电零件的保护试验%Protection against Access to Live Parts Test of Hand-held Electric Tools

    Institute of Scientific and Technical Information of China (English)

    王韦华

    2014-01-01

    According to the understanding of the standard of protection against access to live parts test of hand-held electric tools, brief introduce the test methods and results determination by legends, including the test equipments, test methods, results determination and precautions.%根据对手持式电动工具防止触及带电零件试验的标准理解,通过图例对该试验方法和结果判定作简单介绍,包括试验设备、试验方法、结果判定以及注意事项等方面。

  8. 手持式电动工具用轴承性能浅析%Brief Performance Analysis on the Bearings Applied to Hand-held Motor-operated Electric Tools

    Institute of Scientific and Technical Information of China (English)

    张永恩; 方承志; 宋贵州; 李兴林

    2014-01-01

    Deep groove ball bearings, represented in the tool assembly without considering other factors, combined with the relevant sections of the power tool safety standards, the content mainly discusses several performance requirements of the bearings applied to hand-held motor-operated electric tools and their relationship and effects with safety standard. This content can also be referenced while make technical design and quality appraisal.%以深沟球轴承为代表,在不考虑工具装配等因素的前提下,结合电动工具安全标准的相关章节,讨论并分析手持式电动工具用滚动轴承的主要性能和要求,可供设计选用和质量评价时参考。

  9. 基于用户需求的家用电动工具造型设计研究%Research on Household Hand-held Electric Tools Sculpting Design Based on User Demand

    Institute of Scientific and Technical Information of China (English)

    李刚

    2015-01-01

    基于产品造型设计相关理论,在功能、美学和经济性要求的基础上,分析探讨多学科优化设计原理、系列化设计原理、产品基因原理与协同设计等原则应用于家庭用手持式电动工具系列产品,并进行实例设计.%Based on the related theory of sculpting design and on the basis of function, aesthetic and economic requirements, analyze and discuss the multidisciplinary optimization design principle, series design principle, product gene principle and collaborative design principle, applying to household hand-held power tool series products and instantiate the design.

  10. The reliability and validity of measurements of human dental casts made by an intra-oral 3D scanner, with conventional hand-held digital callipers as the comparison measure.

    Science.gov (United States)

    Rajshekar, Mithun; Julian, Roberta; Williams, Anne-Marie; Tennant, Marc; Forrest, Alex; Walsh, Laurence J; Wilson, Gary; Blizzard, Leigh

    2017-09-01

    Intra-oral 3D scanning of dentitions has the potential to provide a fast, accurate and non-invasive method of recording dental information. The aim of this study was to assess the reliability of measurements of human dental casts made using a portable intra-oral 3D scanner appropriate for field use. Two examiners each measured 84 tooth and 26 arch features of 50 sets of upper and lower human dental casts using digital hand-held callipers, and secondly using the measuring tool provided with the Zfx IntraScan intraoral 3D scanner applied to the virtual dental casts. The measurements were repeated at least one week later. Reliability and validity were quantified concurrently by calculation of intra-class correlation coefficients (ICC) and standard errors of measurement (SEM). The measurements of the 110 landmark features of human dental casts made using the intra-oral 3D scanner were virtually indistinguishable from measurements of the same features made using conventional hand-held callipers. The difference of means as a percentage of the average of the measurements by each method ranged between 0.030% and 1.134%. The intermethod SEMs ranged between 0.037% and 0.535%, and the inter-method ICCs ranged between 0.904 and 0.999, for both the upper and the lower arches. The inter-rater SEMs were one-half and the intra-method/rater SEMs were one-third of the inter-method values. This study demonstrates that the Zfx IntraScan intra-oral 3D scanner with its virtual on-screen measuring tool is a reliable and valid method for measuring the key features of dental casts. Copyright © 2017 Elsevier B.V. All rights reserved.

  11. The designing of Hand-held boiler with the monitor%手持式电站锅炉配风监测仪的设计

    Institute of Scientific and Technical Information of China (English)

    刘勇; 朱杰斌

    2011-01-01

    In view of the current boiler burner field patrol, maintenance equipment, developed a crushing handheld boiler with the wind, it is imperative to monitor. Based on the understanding of pulverized coal boiler with the working principle of the monitoring system,and based on the principle of measurement, the calibration of the first ever speed, the measuring element differential transmission device to measure the internal pressure sensor measuring pressure; send out variable Secondly anemometer can be calculated by wind, By three again for measuring temperature and air temperature, coal powder mixture platinic resistance sensor, the temperature of the measured value and calculated according to the principle of thermal pulverized coal concentration. Mainly introduces the basic circuit design hardware structure and low power circuit design, the key is presented, the main program software flowchart monitoring and presented with FengYi boiler pressure measurement results and meet the design requirements. The experiment proves, plant technical personnel, use convenient,reliable operation cost is low, have a high application value.%针对当前电站锅炉燃烧器的现场巡视、检修设备的溃乏,研制一种手持式电站锅炉配风监测仪势在必行.基于在了解电站锅炉煤粉配风监测系统的工作原理以及测量工作原理的基础上,首先采用经标定过的测速元件测量,经差压变速器送到测量装置内部的压力传感器变送测量出动压;其次由测速原理可以计算出风速;再次由三支分别用于测量热风温度、煤粉温度和风粉混合温度的铂电阻传感器所测得的温度值,根据热平衡原理计算出煤粉浓度.重点介绍了基本设计电路硬件结构以及关键低功耗电路设计,既给出了监测仪主程序软件流程图,又给出了电站锅炉配风仪动压测量的结果分析,达到了设计的要求.经电厂技术人员试验证明,运行可靠,使用方便,成本低,有较高的推广价值.

  12. 手持式压力测痛仪的信度及效度检验%Reliability and validity of the hand-held pressure algometer as a measuring instrument of pressure pain threshold

    Institute of Scientific and Technical Information of China (English)

    陈祢; 郭铁成; 许惊飞; 韦春霞

    2009-01-01

    目的 均较高(ICC>0.95),重测信度优于施测者间信度;根据同一施测者3次重复测量结果的均值所计算的施测者间信度高于单次测量的施测者间信度;肌筋膜痛患者激痛点与正常对照点的压痛阈差异具有统计学意义,激痛点压痛阈值与VAS评分呈显著的负相关.结论 手持式压力测痛仪测量正常健康人压痛阈时具有较高信度,其可作为量化评价激痛点疼痛敏感性的有效工具.%Objective To evaluate the test-retest and inter-rater reliability of the hand-held pressure algometer as a measuring instrument of pressure pain threshold(PPT).Method A total of 37 healthy subjects were recruited for reliability test.Three raters measured the PPT at 12 body sites of the subjects.Each rater conducted three trials on each site.In the validity test,10 patients with active trigger points in the upper trapezius were recruited and measured by one rater using the pressure algometer for PPT,the visual analogue scale(VAS)was also used to evaluate the pain intensity induced by the trigger point.The intraclass correlation coefficient and Spearman correlation coefficient were calculated to reflect the reliability and validity.Results The test-retest and inter-rater reliabilities were both high(ICC>0.95),with the measurements by one rater were more reliable than measurements by multiple raters.The inter-rater reliability of PPT measurement obtained by using the mean value of 3 trials was higher than any of the 3 trials alone.The PPT values of the trigger points were higher than those of the normal points,and there was a significantly negative correlation between the PPT values of the trigger points and the VAS scores.Conclusion The intra-and inter-rater PPT measurements in healthy subjects obtained with the hand-held pressure algometer were highly reliable.The algometer was valid for quantifying myofascial trigger point sensitivity.

  13. Development of a Hand Held Thromboelastograph

    Science.gov (United States)

    2014-01-01

    Subtask 1d: Robustness of device architecture: 1 meter drop test Subtasks 1a – 1d are complete. The voice coil actuator (VCA) motors will generate a...into the 75 µ gap between the two glass plates. A shear rate of 1000/s was chosen based on the data. A one- meter drop test was conducted in-house...interaction • Technical improvements to handheld device and disposable cartridge were identified based on initial testing, and implementation began

  14. Development of a Hand Held Thromboelastograph

    Science.gov (United States)

    2015-01-01

    98/79/EC In Vitro Diagnostic Medical Devices ISO 9001 :2008 Quality management systems- Requirements ISO 13485:2012 Medical Device Quality Management...in compliance with ISO 13485 and the FDA Quality System Regulation 21CFR Part 820. In addition, the following applicable standards and guidance...Statistical aspects ISO 14971:2012 Application of Risk Management to Medical Devices ISO 15223-1:2012 Medical devices. Symbols to be used with medical

  15. Hand-held operational demining system

    OpenAIRE

    2005-01-01

    The article presents selected results from theoretical and experimental investigations concerned with radar backscattering from typical antipersonnel land mines (APL) in the frequency range of about 200 MHz to 8 GHz in order to improve the conventional metal detector demining technology presently still widely in use.

  16. 手持式电动工具维修风险和零件选配技术研究%Research on Repair Risk and Component Matching Technology of Hand-held Electric Tools

    Institute of Scientific and Technical Information of China (English)

    金勇; 傅俊雅

    2014-01-01

    模拟手持式电动工具维修情况,对手持式电动工具的电源线、开关、碳刷以及抑制电容电感等关键零部件进行更换试验,按照相关的国家标准要求分别对替换后的安全、电磁兼容等项目进行测试和数据比对。分析常见的手持式电动工具关键零部件被替换为非原厂零件的特征。%We simulate key parts changing in maintenance and repair when using non original parts, mainly power supply cord, switch, brush and capacitor and inductance, doing lots of tests and data comparison according to the national standards of safety and electromagnetic compatible. We f ind out common characteristics that key parts are replaced by non-original parts in hand-held electric tools.

  17. Discussion on the Improvement of Security Functions of Railway Communication by the Hand-held Mobile Monitoring Positioning Terminal%手持移动监控定位终端改进铁路通信安全功能探讨

    Institute of Scientific and Technical Information of China (English)

    杨青

    2015-01-01

    Through analyzing the existing problems of the monitoring and command of the original railway communication work, this paper expounds the functions of hand-held mobile monitoring positioning terminal to show that the application of monitor terminal system in railway communication system plays an important role in improving the emergency rescue of railway communication and the control of construction work and protecting the operation security of railway communication. The application of terminal greatly improves the working accuracy, shortens the time of failure treatment, reduces the economic losses caused by the faults and greatly improves the efficiency of railway communication. It is helpful to achieve the goal of value management.%本文通过分析原有铁路通信作业监控指挥存在的问题,阐述手持移动监控定位终端的功能,进而说明在铁路通信系统中应用监控终端系统,在改进铁路通信应急抢险和施工作业把控及铁路通信作业安全保障方面发挥的重要作用。终端的使用大大提高了作业精度,缩短了处理故障的时间,降低了故障造成的经济损失,从而大大提高铁路通信的效率,有助于实现价值管理的目标。

  18. 42 CFR 84.171 - Non-powered air-purifying particulate respirators; required components.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Non-powered air-purifying particulate respirators... PROTECTIVE DEVICES Non-Powered Air-Purifying Particulate Respirators § 84.171 Non-powered air-purifying particulate respirators; required components. (a) Each non-powered air-purifying particulate...

  19. 42 CFR 84.170 - Non-powered air-purifying particulate respirators; description.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Non-powered air-purifying particulate respirators... DEVICES Non-Powered Air-Purifying Particulate Respirators § 84.170 Non-powered air-purifying particulate respirators; description. (a) Non-powered air-purifying particulate respirators utilize the wearer's...

  20. Relaxation Dynamics of Non-Power-Law Fluids

    Science.gov (United States)

    Min, Qi; Duan, Yuan-Yuan; Wang, Xiao-Dong; Liang, Zhan-Peng; Lee, Duu-Jong

    2013-12-01

    The relaxation of non-Newtonian liquids with non-power-law rheology on partially wetted surfaces is rarely investigated. This study assesses the relaxation behavior of 14 partial wetting systems with non-power-law fluids by sessile drop method. These systems are two carboxymethylcellulose sodium solutions on two kinds of slides, cover glass, and silicon wafer surfaces; three polyethylene glycol (PEG400) + silica nanoparticle suspensions on polymethyl methacrylate and polystyrene surfaces. The dynamic contact angle and moving velocity of contact line relationship data for relaxation drops of the 14 tested systems demonstrate a power-law fluid-like behavior, and the equivalent power exponent for a certain fluid on different solid substrates are uniform. By analyzing the relationship between the equivalent power exponent and shear rate, it is proposed that a fluid regime with shear rates of a few tens of s controls relaxation dynamics.

  1. 42 CFR 84.179 - Non-powered air-purifying particulate respirators; filter identification.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Non-powered air-purifying particulate respirators... RESPIRATORY PROTECTIVE DEVICES Non-Powered Air-Purifying Particulate Respirators § 84.179 Non-powered air-purifying particulate respirators; filter identification. (a) The respirator manufacturer, as part of...

  2. 75 FR 70112 - Medical Devices; General and Plastic Surgery Devices; Classification of Non-Powered Suction...

    Science.gov (United States)

    2010-11-17

    ... Devices; Classification of Non-Powered Suction Apparatus Device Intended for Negative Pressure Wound... Administration (FDA) is classifying the non- powered suction apparatus device intended for negative pressure... is the guidance document entitled ``Class II Special Controls Guidance Document: Non-Powered Suction...

  3. Non-Power Reactor Operator Licensing Examiner Standards. Revision 1

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-06-01

    The Non-Power Reactor Operator Licensing Examiner Standards provide policy and guidance to NRC examiners and establish the procedures and practices for examining and licensing of applicants for NRC operator licenses pursuant to Part 55 of Title 10 of the Code of Federal Regulations (10 CFR 55). They are intended to assist NRC examiners and facility licensees to understand the examination process better and to provide for equitable and consistent administration of examinations to all applicants by NRC examiners. These standards are not a substitute for the operator licensing regulations and are subject to revision or other internal operator examination licensing policy changes. As appropriate, these standards will be revised periodically to accommodate comments and reflect new information or experience.

  4. Easy Ergonomics: A Guide to Selecting Non-Powered Hand Tools

    Science.gov (United States)

    Easy Ergonomics: A Guide to Selecting Non-Powered Hand Tools Department of Industrial Relations Cal/OSHA Consultation Service Research ... puborder.asp http://www.cdc.gov/niosh Easy Ergonomics: A Guide to Selecting Non-Powered Hand Tools ...

  5. Non-Power-of-Two FFTs: Exploring the Flexibility of the Montium TP

    Directory of Open Access Journals (Sweden)

    Marcel D. van de Burgwal

    2009-01-01

    This paper presents the implementation of a class of non-power-of-two FFTs to discover the limitations and Flexibility of the Montium TP for less regular algorithms. A non-power-of-two FFT is less regular compared to a traditional power-of-two FFT. The results of the implementation show the processing time, accuracy, energy consumption and Flexibility of the implementation.

  6. Vibration produced by hand-held olive electrical harvesters

    Directory of Open Access Journals (Sweden)

    Emanuele Cerruto

    2012-09-01

    Full Text Available The paper reports the results of some laboratory and field tests aimed at assessing the acceleration levels transmitted to the hand-arm system by electric portable harvesters for olive. Four harvesting heads, different for shape and kinematic system, and five bars, different for diameter, length and material (aluminium and carbon fibre, were used in assembling eleven harvesters. The vibrations were measured in two points, next to the handgrips. The laboratory tests allowed the evaluation of the acceleration levels in standard controlled conditions, while the field tests allowed the assessing of the effects of the tree canopy with respect to the no load running. The laboratory tests showed that in reducing the vibration level plays a major role the kinematic system of the harvesting head and then the bar material. The classical flap-type harvester produced accelerations of around 20 m/s2, while by using a harvesting head with two parts in opposite movement, the accelerations were lowered to about 6 m/s2. The use of carbon fibres for the bars, besides the reduction in weight, produced also a reduction in acceleration (from 21 to 16 m/s2. The field tests proved that the tree canopy had a negative effect on the vibrations transmitted to the hand-arm system, especially when the aluminium bar of small diameter was used.

  7. Absorption Related to Hand-Held Devices in Data Mode

    DEFF Research Database (Denmark)

    Andersen, Jørgen Bach; Nielsen, Jesper Ødum; Pedersen, Gert F.

    2016-01-01

    The human body has an influence on the radiation from handheld devices like smartphones, tablets and laptops, part of the energy is absorbed and the spatial distribution of the radiated part is modified. Previous studies of whole body absorp- tion have mainly been numerical or related to talk mode....... In the present paper an experimental study involving four volunteers and three different devices is performed from 0.5 to 3 GHz. The devices are a laptop, a tablet, and a smartphone all held in the lap. The 3D distribution of radiation is measured. Comparing the integrated power in the case of a person present...... with the device alone allows the determination of the relative absorption in the whole body and the device. In general the absorption varies considerably between devices and as a function of frequency and person. The absorption varies from almost nothing to close to 100%. The shadowing of the body is apparent...

  8. Real-Time Hand-Held Magnetometer Array

    Science.gov (United States)

    2016-04-01

    detection because of their sensitivity in spite of their large size and power consumption. Large batteries are required to power the system, which...metal detector array with real-time processing algorithms that accurately determines the position, depth, and size of magnetic anomalies from...electronics design using a novel digital approach. We achieved order of magnitude reductions in the size and power consumption of total field

  9. Testing of Hand-Held Mine Detection Systems

    Science.gov (United States)

    2015-01-08

    typically lighter weight, easier to operate, and cost less than their dual sensor counterpart. Bottom line, it is up to the application and operator to...3.2 Test Planning. a. Test planning should be initiated early in the acquisition process in order to yield the most cost effective approach to...size, strength, and wearing suitable garments and equipment appropriate to the tasks. Data will be gathered to identify and define the test

  10. 3D interactive topology optimization on hand-held devices

    DEFF Research Database (Denmark)

    Nobel-Jørgensen, Morten; Aage, Niels; Christiansen, Asger Nyman;

    2015-01-01

    This educational paper describes the implementation aspects, user interface design considerations and workflow potential of the recently published TopOpt 3D App. The app solves the standard minimum compliance problem in 3D and allows the user to change design settings interactively at any point i...

  11. Work.

    Science.gov (United States)

    Haines, Annette M.

    2003-01-01

    Draws upon Maria Montessori's writings to examine work as a universal human tendency throughout life. Discusses the work of adaptation of the infant, work of "psycho-muscular organism" for the preschooler, work of the imagination for the elementary child, community work of the adolescent, and work of the adult. Asserts that…

  12. The Non-power Influence of Enterprise Leaders%谈企业领导者的非权力性影响力

    Institute of Scientific and Technical Information of China (English)

    余静

    2013-01-01

    企业中,非权力性影响力体现了企业领导者本身的素质、人格、学识等修养水平,具有感召力和潜移默化的特点。良好的非权力性影响力能激发下属的工作能动性,有助于提高企业管理效能,对企业的发展与稳定起到重要的作用。%In the enterprise, non-power influence embodies the personality, knowledge and accomplishment of the enterprise leaders, it has the characteristics of charisma and osmosis. Good non-power influence can stimulate the staffs' work initiative, help to improve the efficiency of enterprise management, and play an important role on the stability and development of enterprises.

  13. Spreading of completely wetting, non-Newtonian fluids with non-power-law rheology.

    Science.gov (United States)

    Min, Qi; Duan, Yuan-Yuan; Wang, Xiao-Dong; Liang, Zhan-Peng; Lee, Duu-Jong; Su, Ay

    2010-08-01

    Spreading non-Newtonian liquids with non-power-law rheology on completely wetting surfaces are seldom investigated. This study assessed the wetting behavior of polydimethylsiloxane (PDMS), a Newtonian fluid, two carboxymethylcellulose (CMC) sodium solutions, a PDMS+2%w/w silica nanoparticle suspension and three polyethylene glycol (PEG400)+5-10%w/w silica nanoparticle suspensions (non-power-law fluids) on a mica surface. The theta(D)-U and R-t data for spreading drops of the six tested, non-power-law fluids can be described by power-law wetting models. We propose that this behavior is attributable to a uniform shear rate (a few tens to a few hundreds of s(-1)) distributed over the thin-film regime that controls spreading dynamics. Estimated film thickness was below the resolution of an optical microscope for direct observation. Approximating a general non-Newtonian fluid spreading as a power-law fluid greatly simplifies theoretical analysis and data interpretation.

  14. The non-power model of the genetic code: a paradigm for interpreting genomic information.

    Science.gov (United States)

    Gonzalez, Diego Luis; Giannerini, Simone; Rosa, Rodolfo

    2016-03-13

    In this article, we present a mathematical framework based on redundant (non-power) representations of integer numbers as a paradigm for the interpretation of genomic information. The core of the approach relies on modelling the degeneracy of the genetic code. The model allows one to explain many features and symmetries of the genetic code and to uncover hidden symmetries. Also, it provides us with new tools for the analysis of genomic sequences. We review briefly three main areas: (i) the Euplotid nuclear code, (ii) the vertebrate mitochondrial code, and (iii) the main coding/decoding strategies used in the three domains of life. In every case, we show how the non-power model is a natural unified framework for describing degeneracy and deriving sound biological hypotheses on protein coding. The approach is rooted on number theory and group theory; nevertheless, we have kept the technical level to a minimum by focusing on key concepts and on the biological implications. © 2016 The Author(s).

  15. Post 9-11 Security Issues for Non-Power Reactor Facilities

    Energy Technology Data Exchange (ETDEWEB)

    Zaffuts, P. J.

    2003-02-25

    This paper addresses the legal and practical issues arising out of the design and implementation of a security-enhancement program for non power reactor nuclear facilities. The security enhancements discussed are derived from the commercial nuclear power industry's approach to security. The nuclear power industry's long and successful experience with protecting highly sensitive assets provides a wealth of information and lessons that should be examined by other industries contemplating security improvements, including, but not limited to facilities using or disposing of nuclear materials. This paper describes the nuclear industry's approach to security, the advantages and disadvantages of its constituent elements, and the legal issues that facilities will need to address when adopting some or all of these elements in the absence of statutory or regulatory requirements to do so.

  16. Study on a non-powered heat transporting system; Mudoryoku netsu hanso system ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Kamiya, Y. [Kanto Gakuin University, Yokohama (Japan)

    1997-11-25

    This paper proposes a non-powered heat transportation (HT) system. The system is composed of an evaporator, condenser, receiver, switching chamber (SC) and 3 check valves which are connected with each other by vapor and liquid tubes. Condensed liquid supercooled in the condenser exists in the receiver forming a saturated condition at a concerned temperature, and condensed liquid is lifted up from the condenser to the receiver by pressure difference between the evaporator and receiver. Generally evaporation pressure is higher by pressure difference between liquid levels in the condenser and receiver. The lifted up amount of condensed liquid increases with evaporation pressure, resulting in an increase in heating surface area of the condenser and amount of condensed liquid. A proper evaporator pressure is thus retained by reduction of evaporation pressure. SC is connected with the receiver and evaporator, and switches high- and low-pressure valves by motion of an inner float to transport heat from the evaporator to condenser. Reverse HT is possible as normal latent HT by installing a bypass. Some problems are also described. 2 refs., 8 figs.

  17. A 6 month evaluation of a non-powered hybrid mattress replacement system.

    Science.gov (United States)

    Newton, Heather

    2015-11-11

    In 2013, the Royal Cornwall Hospitals NHS Trust undertook a 6-week evaluation of the AtmosAir 4000 non-powered reactive pressure redistribution mattress replacement system to determine its suitability in supporting the prevention of pressure ulcers in high-risk patients (phase one). The results demonstrated that the AtmosAir 4000 mattress system, together with skin assessment and repositioning regimes, met the pressure ulcer preventative needs of patients at high and very high risk of developing pressure ulcers. It also resulted in a notable reduction in the use of dynamic air mattresses. Consequently, 50 AtmosAir 4000 mattresses were purchased for two acute medical wards in the evaluation site, where the majority of patients are elderly with an acute medical condition. This article discusses the second phase where an audit compares the number of hospital-acquired pressure ulcers reported over a 6-month period with the equivalent time period in 2014. Results show that the number of pressure ulcers reduced by 65% and 50% in the two wards. The number of dynamic mattresses used on the two wards reduced significantly from 28 to 7, which represents a 75% reduction in usage.

  18. 42 CFR 84.1145 - Silica dust test; non-powered single-use dust respirators; minimum requirements.

    Science.gov (United States)

    2010-10-01

    ... respirators; minimum requirements. 84.1145 Section 84.1145 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF... Efficiency Respirators and Combination Gas Masks § 84.1145 Silica dust test; non-powered single-use dust respirators; minimum requirements. (a) Three respirators will be tested. (b) As described in §...

  19. 手持式电子肌力测定仪在痉挛型脑瘫儿童下肢肌力测定中的信度研究%The reliability of hand-held electronic dynamometer tests for lower limb muscle strength measurement in children with spastic cerebral palsy

    Institute of Scientific and Technical Information of China (English)

    史惟; 朱默; 骆丹丹; 杨红; 陈冬冬; 黄华玉

    2010-01-01

    Objective To determine the reliability of hand-held electronic dynamometer (HHD) tests for lower limb muscle strength measurement in children with spastic cerebral palsy (CP). Methods Twenty-eight children ( 15 boys and 13 girls; mean age 5 years 8 months) with different types of CP (2 with spastic quadriplegia,8 spastic diplegia, 6 hemiplegia, 1 triplegia and 1 monoplegia) , and at different functional levels ( 19 graded at gross motor function classification system level Ⅰ, 6 level Ⅱ, 2 level Ⅲ and 1 level Ⅳ ) were recruited from the Rehabilitation Center of the Children's Hospital of Fudan University. Standardized HHD protocols were used to measure the strength of their hip, knee and ankle muscles. The HHD test was performed by the same examiner twice with an interval of 10 min in between. The HDD test was also performed with 15 randomly selected CP children by 2 examiners with an interval of 10 min in between. The test-retest and inter-rater reliabilities of the HDD readings were determined by calculating the intra- and inter-class correlation coefficients. Results The HHD measurements showed fine testretest reliability ( ICC = 0.74-0.97 ) and inter-rater reliability ( ICC = 0.63-0.97 ) in measuring lower-limb muscle strength of children with spastic CP, with the highest test-retest reliability for the hip flexion, foot plantar flexion and knee extension muscle groups. The highest inter-rater reliability was achieved with the hip flexion and foot dorsiflexion muscle groups. Conclusions Standardized HHD testing of lower-limb muscle strength in children with spastic CP shows fine test-retest and inter-rater reliability. The HHD can reliably assess the lower-limb muscle strength of children with spastic CP.%目的 探讨手持式电子肌力测定仪在痉挛型脑瘫儿童下肢肌力测定中的信度.方法 以2009年2月至11月在复旦大学附属儿科医院康复中心接受康复治疗的28例3岁以上的痉挛型脑瘫患儿为研究对象,采

  20. Modeling and Simulation on the Underwater Trajectory of Non-Powered Vehicle Discharged from the Broadside

    Institute of Scientific and Technical Information of China (English)

    Huijuan Ye; Hao Zhou; Xinye Wang

    2016-01-01

    In order to study the underwater trajectory of the non⁃powered vehicle discharged from the broadside of the underwater platform, the simulation on the ascent process of non⁃powered vehicle was realized based on the mathematical model including the movement of the vehicle on the slope plate and in the seawater, the air chamber underwater working process etc. The simulation results show that the outlet speed and attitude of the vehicle meet the requirements of missile launching, the non⁃powered vehicle discharged from the broadside of the underwater platform is feasible. The simulation results with varying parameters show that the negative buoyancy of the vehicle imposes great impacts on the security of its discharge and the floating process, and the vehicle discharge depth is proportional to the floating time. The models and simulation result can be used in further research on the broadside discharging technology of the underwater platform.

  1. 新型无动力跑车的设计%Design of a New Non-power Sports Car

    Institute of Scientific and Technical Information of China (English)

    李方明

    2013-01-01

      The structure and design of a new non-power sports car are introduced and the car features novel design, unique structure, lightweight and flexibility, suitable for China’s actual situation and able to be popularized and applied in small and medium-sized wood processing factories and wood processing factories run by self-employed persons.%  介绍了一种新型无动力跑车的结构和设计。该跑车设计新颖、结构独特、轻便灵活,适合我国国情,可在中小型及个体木材加工厂推广应用。

  2. Primitive Non-Powerful Symmetric Loop-Free Signed Digraphs with Base 3 and Minimum Number of Arcs

    Institute of Scientific and Technical Information of China (English)

    Lihua YOU; Yuhan WU

    2013-01-01

    Let S be a primitive non-powerful symmetric loop-free signed digraph on even n vertices with base 3 and minimum number of arcs.In [Lihua YOU,Yuhan WU.Primitive nonpowerful symmetric loop-free signed digraphs with given base and minimum number of arcs.Linear Algebra Appl.,2011,434(5),1215-1227],authors conjectured that D is the underlying digraph of S with exp(D) =3 if and only if D is isomorphic to EDn,3,3,where EDn,3,3 =(V,A)is a digraph with V ={1,2,...,n},A ={(1,i),(i,1) | 3 ≤ i ≤ n} ∪ {(2i-1,2i),(2i,2i-1) |2 ≤ i ≤ n/2} ∪ {(2,3),(3,2),(2,4),(4,2)}).In this paper,we show the conjecture is true and completely characterize the underlying digraphs which have base 3 and the minimum number of arcs.

  3. Fatigability evaluation on multiple sclerosis patients by using a hand held dynamometer

    OpenAIRE

    Karina Pavan; Kizi Schmidt; Tatiana de Ambrosio Ariça; Maria Fernanda Mendes; Charles Peter Tilbery; Sergio Lianza

    2006-01-01

    A fadiga é um dos mais freqüentes sintomas e incapacitantes na esclerose múltipla (EM). O objetivo do presente estudo foi avaliar a fatigabilidade em pacientes com EM pela aplicação de exercícios isotônicos e isométricos com dinamômetro manual. Como resultados, a fatigabilidade, a força e o tempo máximo de isometria são semelhantes estatisticamente entre o grupo controle e o grupo de EM. Conclui-se que embora a queixa subjetiva de fadiga seja freqüente na EM, a fatigabilidade e a recuperação ...

  4. An Evaluation of the Feasibility of Using Hand-Held Computers for Training.

    Science.gov (United States)

    1982-05-30

    held calculators, a product of technology only about a decade old, have now become standard fixtures in many classroom and field situations. This is...peripherals for them in the near future. This section looks at new technologies which would expand the use of the present HHC for Army training purposes...113 5 -61 𔃿mm) Negmt: I b (450kg) D-4 H H C1 Peripherals and Accessories programmable Memory (RAM) 00fel Ne: RL-PSOO1 (4 K bybes ) RLfl02 (a K btytee

  5. 77 FR 73354 - Safety Standard for Hand-Held Infant Carriers

    Science.gov (United States)

    2012-12-10

    ... INFORMATION CONTACT: Patricia L. Edwards, Project Manager, Directorate for Engineering Sciences, U.S. Consumer... place the infant at risk for shaken baby syndrome. Because there are no injuries reported in...

  6. Design, Build, and Test a Hand-held GPS Interference Detector

    Science.gov (United States)

    2008-09-01

    Range TA 6B TA 7 TA 8 TA 9 TA 10 TA 11 TA 12A Horton DZ TA 12B TA 12C TA 13E East Land Nav Beginner ...System."State Research Center of Russia Elektropribor, 2003. Guerriero, Bob LTC, Tom LTC James, and Jim LTC Rozzi. “The future of Army Space

  7. Hand-held, mechanically cooled, radiation detection system for gamma-ray spectroscopy

    Science.gov (United States)

    Burks, Morgan Thomas; Eckels, Joel Del

    2010-06-08

    In one embodiment, a radiation detection system is provided including a radiation detector and a first enclosure encapsulating the radiation detector, the first enclosure including a low-emissivity infra-red (IR) reflective coating used to thermally isolate the radiation detector. Additionally, a second enclosure encapsulating the first enclosure is included, the first enclosure being suspension mounted to the second enclosure. Further, a cooler capable of cooling the radiation detector is included. Still yet, a first cooling interface positioned on the second enclosure is included for coupling the cooler and the first enclosure. Furthermore, a second cooling interface positioned on the second enclosure and capable of coupling the first enclosure to a cooler separate from the radiation detection system is included. Other embodiments are also presented.

  8. A comparison of two methods to assess the usage of mobile hand-held communication devices.

    Science.gov (United States)

    Berolo, Sophia; Steenstra, Ivan; Amick, Benjamin C; Wells, Richard P

    2015-01-01

    The purposes of this study were to: 1) examine agreement between self-reported measures of mobile device use and direct measures of use, and 2) understand how respondents thought about their device use when they provided self-reports. Self-reports of six categories of device use were obtained using a previously developed questionnaire, and direct measures of use were collected using a custom logging application (n = 47). Bland-Altman analyses were used to examine agreement between the two measurement approaches. Interviews targeted participants' experiences completing the device use section of the questionnaire. Self-reports of use on a typical day last week overestimated logged use. Overestimates tended to be low at low average usage times, and became more variable as usage time increased. Self-reports of use yesterday also exceeded logged use, however the degree of overestimation was less than for a typical day last week. Six themes were identified from interviews, including the thought process used by participants to arrive at usage and the ease of reporting usage. It is challenging for respondents of this questionnaire to provide accurate self-reports of use. The source of this challenge may be attributed to the intrinsic difficulty of estimating use, partly due to the multiple functions of the devices as well as the variability of use both within a day and a week. Research investigating the relationship between device use and health outcomes should include a logging application to examine exposure simultaneously with self-reports to better understand the sources of hazardous exposures.

  9. Assessment of joystick and wrist control in hand-held articulated laparoscopic prototypes

    NARCIS (Netherlands)

    Okken, L.M.; Chmarra, M.K.; Hiemstra, E.; Jansen, F.W.; Dankelman, J.

    2012-01-01

    Various steerable instruments with flexible distal tip have been developed for laparoscopic surgery. The problem of steering such instruments, however, remains a challenge, because no study investigated which control method is the most suitable. This study was designed to examine whether thumb (joys

  10. Preoperative distraction in children: hand-held videogames vs clown therapy.

    Science.gov (United States)

    Messina, M; Molinaro, F; Meucci, D; Angotti, R; Giuntini, L; Cerchia, E; Bulotta, A L; Brandigi, E

    2014-12-30

    Anxiety in children undergoing surgery is characterized by feelings of tension, apprehension, nervousness and fear which may manifest differently. Postoperative behavioural changes such as nocturnal enuresis, feeding disorders, apathy, and sleep disturbances may stem from postoperative anxiety. Some Authors pointed out that over 60% of children undergoing surgery are prone to developing behavioural alterations 2 weeks after surgery. Variables such as age, temperament and anxiety both in children and parents are considered predictors of such changes.1 Studies were published describing how psycho-behavioural interventions based on play, learning and entertainment in preparing children for surgery, may reduce preoperative anxiety. Clown-therapy is applied in the most important paediatric facilities and has proved to diminish children's emotional distress and sufferance, as well as consumption of both analgesics and sedatives and to facilitate the achievement of therapeutic goals. The aim of our study was to evaluate the efficacy of clown-therapy during the child's hospital stay, with a view to optimizing treatment and care, preventing behavioural alterations and enhancing the child's overall life quality.

  11. Preoperative distraction in children: hand-held videogames vs clown therapy

    Directory of Open Access Journals (Sweden)

    M. Messina

    2014-12-01

    Full Text Available Anxiety in children undergoing surgery is characterized by feelings of tension, apprehension, nervousness and fear which may manifest differently. Postoperative behavioural changes such as nocturnal enuresis, feeding disorders, apathy, and sleep disturbances may stem from postoperative anxiety. Some Authors pointed out that over 60% of children undergoing surgery are prone to developing behavioural alterations 2 weeks after surgery. Variables such as age, temperament and anxiety both in children and parents are considered predictors of such changes.1 Studies were published describing how psycho-behavioural interventions based on play, learning and entertainment in preparing children for surgery, may reduce preoperative anxiety. Clown-therapy is applied in the most important paediatric facilities and has proved to diminish children’s emotional distress and sufferance, as well as consumption of both analgesics and sedatives and to facilitate the achievement of therapeutic goals. The aim of our study was to evaluate the efficacy of clown-therapy during the child’s hospital stay, with a view to optimizing treatment and care, preventing behavioural alterations and enhancing the child’s overall life quality.

  12. Hand held analog television over WiMAX executed in SW

    NARCIS (Netherlands)

    Iancu, D.; Ye, H.; Senthilvelan, M.; Kotlyar, V.; Glossner, J.; Moudgill, M.; Agrawal, S.; Jinturkar, S.; Iancu, A.; Ramadurai, V.

    2007-01-01

    This paper describes a device capable of performing the following tasks: it samples and decodes the composite video analog TV signal, it encodes the resulting RGB data into a MPEG-4 stream and sends it over a WiMAX link. On the other end of the link a similar device receives the WiMAX signal, in eit

  13. Use of hand held devices in a Western Australian health sector.

    Science.gov (United States)

    Patel, Keyurkumar J; Gururajan, Raj

    2006-01-01

    This paper outlines the results of wireless development for a private healthcare provider in Western Australia. The case study is presented here discusses the software methodology used, problems encountered in developing the software application and then delivering it. Furthermore, the important issues associated with integration of new software with existing modules, human factors that impeded some aspects of development and issues associated with rigorous testing to ensure user requirements are also discussed.

  14. Panasonic HR-1800 Hand-Held Computer Solutions to Composite Materials Formulas.

    Science.gov (United States)

    1983-09-01

    TR-83-4093 PROGRAM LISTING (Cont’d) I, : E-6 :PE*u3 D RINT 3 =U4---4*U3 gtr -BINf X𔃾)=U5-C4§U3 GS fQ :T SEXT *lJ 3 54A@ ;OSUB 6)i6’S2*U2J ,’-54 PLA... SEXT * 3’E6 ":W=X(ue) E:=E1*A(1i:E2:- * * :628800)E=6. ~.-- (33B4*A~ )2A QPmI 5 39 a@ G$=" T r4EH 310 1APUT p~~4 ~2’ -;C SUB 3800 ŗUCK!:4G (T’...u (?00

  15. Performance evaluation of a hand-held, semiconductor (CdZnTe)-based gamma camera

    CERN Document Server

    Abe, A; Lee, J; Oka, T; Shizukuishi, K; Kikuchi, T; Inoue, T; Jimbo, M; Ryuo, H; Bickel, C

    2003-01-01

    We have designed and developed a small field of view gamma camera, the eZ SCOPE, based on use of a CdZnTe semiconductor. This device utilises proprietary signal processing technology and an interface to a computer-based imaging system. The purpose of this study was to evaluate the performance of the eZ scope in comparison with currently employed gamma camera technology. The detector is a single wafer of 5-mm-thick CdZnTe that is divided into a 16 x 16 array (256 pixels). The sensitive area of the detector is a square of dimension 3.2 cm. Two parallel-hole collimators are provided with the system and have a matching (256 hole) pattern to the CdZnTe detector array: a low-energy, high-resolution parallel-hole (LEHR) collimator fabricated of lead and a low-energy, high-sensitivity parallel-hole (LEHS) collimator fabricated of tungsten. Performance measurements and the data analysis were done according to the procedures of the NEMA standard. We also studied the long-term stability of the system with continuous use...

  16. Transforming an Introductory Linear Algebra Course with a TI-92 Hand-Held Computer.

    Science.gov (United States)

    Quesada, Antonio R.

    2003-01-01

    Describes how the introduction of the TI-92 transformed a traditional first semester linear algebra course into a matrix-oriented course that emphasized conceptual understanding, relevant applications, and numerical issues. Indicates an increase in students' overall performance as they found the calculator very useful, believed it helped them…

  17. Spatial interpolation of pesticide drift from hand-held knapsack sprayers used in potato production

    Science.gov (United States)

    Garcia-Santos, Glenda; Pleschberger, Martin; Scheiber, Michael; Pilz, Jürgen

    2017-04-01

    Tropical mountainous regions in developing countries are often neglected in research and policy but represent key areas to be considered if sustainable agricultural and rural development is to be promoted. One example is the lack of information of pesticide drift soil deposition, which can support pesticide risk assessment for soil, surface water, bystanders and off-target plants and fauna. This is considered a serious gap, given the evidence of pesticide-related poisoning in those regions. Empirical data of drift deposition of a pesticide surrogate, Uranine tracer, were obtained within one of the highest potato producing regions in Colombia. Based on the empirical data, different spatial interpolation techniques i.e. Thiessen, inverse distance squared weighting, co-kriging, pair-copulas and drift curves depending on distance and wind speed were tested and optimized. Results of the best performing spatial interpolation methods, suitable curves to assess mean relative drift and implications on risk assessment studies will be presented.

  18. [Design of hand-held heart rate variability acquisition and analysis system].

    Science.gov (United States)

    Li, Kaiyuan; Wang, Buqing; Wang, Weidong

    2012-07-01

    A design of handheld heart rate variability acquisition and analysis system is proposed. The system collects and stores the patient's ECG every five minutes through both hands touching on the electrodes, and then -uploads data to a PC through USB port. The system uses software written in LabVIEW to analyze heart rate variability parameters, The parameters calculated function is programmed and generated to components in Matlab.

  19. Reliability and accuracy of six hand-held blood lactate analysers.

    Science.gov (United States)

    Bonaventura, Jacinta M; Sharpe, Ken; Knight, Emma; Fuller, Kate L; Tanner, Rebecca K; Gore, Christopher J

    2015-03-01

    The reliability and accuracy of five portable blood lactate (BLa) analysers (Lactate Pro, Lactate Pro2, Lactate Scout+, Xpress™, and Edge) and one handheld point-of-care analyser (i-STAT) were compared to a criterion (Radiometer ABL90). Two devices of each brand of analyser were assessed using 22 x 6 mL blood samples taken from five subjects at rest and during exercise who generated lactate ranging ~1-23 mM. Each sample was measured simultaneously ~6 times on each device. Reliability was assessed as the within-sample standard deviation (wsSD) of the six replicates; accuracy as the bias compared with the ABL90; and overall error (the root mean squared error (√MSE)) was calculated as the square root of (wsSD(2) and bias(2)). The √MSE indicated that both the Edge and Xpress had low total error (~0-2 mM) for lactate concentrations 15 mM. In all cases, bias (negative) was the major contribution to the √MSE. In conclusion, in a clinical setting where BLa is generally <15 mM the Edge and Xpress devices are relevant, but for athlete testing where peak BLa is important for training prescription the Edge and Lactate Pro2 are preferred. Key pointsThe reliability of five common portable blood lactate analysers were generally <0.5 mM for concentrations in the range of ~1.0-10 mM.For all five portable analysers, the analytical error within a brand was much smaller than the biological variation in blood lactate (BLa).Compared with a criterion blood lactate analyser, there was a tendency for all portable analysers to under-read (i.e. a negative bias), which was particularly evident at the highest concentrations (BLa ~15-23 mM).The practical application of these negative biases would overestimate the ability of the athlete and prescribe a training intensity that would be too high.

  20. Reliability and Accuracy of Six Hand-Held Blood Lactate Analysers

    Directory of Open Access Journals (Sweden)

    Jacinta M. Bonaventura, Ken Sharpe, Emma Knight, Kate L. Fuller, Rebecca K. Tanner, Christopher J. Gore

    2015-03-01

    Full Text Available The reliability and accuracy of five portable blood lactate (BLa analysers (Lactate Pro, Lactate Pro2, Lactate Scout+, Xpress™, and Edge and one handheld point-of-care analyser (i-STAT were compared to a criterion (Radiometer ABL90. Two devices of each brand of analyser were assessed using 22 x 6 mL blood samples taken from five subjects at rest and during exercise who generated lactate ranging ~1-23 mM. Each sample was measured simultaneously ~6 times on each device. Reliability was assessed as the within-sample standard deviation (wsSD of the six replicates; accuracy as the bias compared with the ABL90; and overall error (the root mean squared error (√MSE was calculated as the square root of (wsSD2 and bias2. The √MSE indicated that both the Edge and Xpress had low total error (~0-2 mM for lactate concentrations 15 mM. In all cases, bias (negative was the major contribution to the √MSE. In conclusion, in a clinical setting where BLa is generally <15 mM the Edge and Xpress devices are relevant, but for athlete testing where peak BLa is important for training prescription the Edge and Lactate Pro2 are preferred.

  1. Movement paths in operating hand-held tools: tests of distal-shift hypotheses.

    Science.gov (United States)

    Sülzenbrück, Sandra; Heuer, Herbert

    2013-06-01

    Extending the body with a tool could imply that characteristics of hand movements become characteristics of the movement of the effective part of the tool. Recent research suggests that such distal shifts are subject to boundary conditions. Here we propose the existence of three constraints: a strategy constraint, a constraint of movement characteristics, and a constraint of mode of control. We investigate their validity for the curvature of transverse movements aimed at a target while using a sliding first-order lever. Participants moved the tip of the effort arm of a real or virtual lever to control a cursor representing movements of the tip of the load arm of the lever on a monitor. With this tool, straight transverse hand movements are associated with concave curvature of the path of the tip of the tool. With terminal visual feedback and when targets were presented for the hand, hand paths were slightly concave in the absence of the dynamic transformation of the tool and slightly convex in its presence. When targets were presented for the tip of the lever, both the concave and convex curvatures of the hand paths became stronger. Finally, with continuous visual feedback of the tip of the lever, curvature of hand paths became convex and concave curvature of the paths of the tip of the lever was reduced. In addition, the effect of the dynamic transformation on curvature was attenuated. These findings support the notion that distal shifts are subject to at least the three proposed constraints.

  2. An improved hand-held four-detector gamma-probe for radioassisted oncological surgery

    CERN Document Server

    Dusi, W; Bollini, D; Moroni, C; Ricard, M

    2000-01-01

    The performance of an improved intraoperative gamma-probe for radioassisted oncological surgery is presented and discussed. The probe is based on a square array of four 5x5 mm sup 2 coplanar CdTe room temperature semiconductor detectors and each detector has an independent read out electronic chain, allowing an original handling of the signal. Therefore, the search for gamma-emission hot points may be carried out in two different, independent ways: (1) Finding out the position of the probe corresponding to the maximum value of the total counting rate, on the basis of a trial and error procedure (typical for the conventional probe; (2) Finding out the position of the probe where both the differences between the counting rate performed by orthogonal, adjacent halves of the array vanish (differential method). This makes the new probe sensitive to the bidimensional gradient of the gamma-ray flux, measured on the scanned plane. Furthermore, the algebraic sign of the difference indicates in which direction the prob...

  3. Edgewood Biosensors Test Bed Hand-held and Man-Portable Edition

    Science.gov (United States)

    2013-09-01

    and found the barcode scanner difficult to use. One commented, “This system is tedious”. Another concern for the soldiers in the field was the...assays at any given time. During the field testing, soldiers had difficulty manipulating the pouch and found the barcode scanner difficult to use. One...Manipulation of ticket reduced ease of use from Excellent to Good.   Difficulty using  barcode   scanner . Suggest a device on  barcode   scanner  for

  4. Real-time Identification System using Mobile Hand-held Devices: Mobile Biometrics Evaluation Framework

    Science.gov (United States)

    2014-04-01

    reader, 1D/2D barcode reader, smartcard reader, and magnetic stripe reader. Its silicon fingerprint reader captures images at 508 dpi, and provides the...charge using an upgraded battery option. The unit offers several expansion capabilities including the ability to read magnetic stripes or 2D barcodes ...Fingerprint Sensor: FIPS 201 / NIST SP 800-76 compliant; UPEK TCS1 Scanner : Optical Camera, 4.88” x 1.65” Read Area Smartcard Compliancy: ISO 14443A/B; ISO

  5. Use of hand-held computers to record and analyze intervention data.

    Science.gov (United States)

    Bluml, B M; Enlow, M

    1993-07-01

    Using the Wizard to document clinical activities has been well received by the clinical staff. What had previously been a dreaded task has become an ongoing part of daily activities. The revised Clinical Activity Log also provided the staff pharmacists with an easier method of documenting their clinical activities. The task of inputing the information from the staff pharmacists' paper logs into the computer is time consuming and is currently being done by the clinical staff. Procurement of additional Wizards for the staff pharmacists to use in the central pharmacy and satellite pharmacies is currently being considered. Using the Wizard has enabled the clinical staff to document clinical activities into the computer database in an ongoing manner throughout the day. Documentation has increased and is now more complete. Productivity is being monitored. Physician responses and patient outcomes are now being documented. Most importantly the computerized system allows for easy retrieval of the documented information for evaluation so that tracking and trending can be done and we can thereby continue to improve the quality of pharmaceutical care being provided.

  6. Interference from a hand held radiofrequency remote control causing discharge of an implantable defibrillator.

    Science.gov (United States)

    Man, K C; Davidson, T; Langberg, J J; Morady, F; Kalbfleisch, S J

    1993-08-01

    A 46-year-old man with a history of sustained monomorphic ventricular tachycardia underwent an implantation of a third generation multiprogrammable implantable cardioverter defibrillator. One year post implant, while manipulating a remote control to a radiofrequency modulated toy car, the patient experienced a defibrillator discharge not preceded by an arrhythmia prodrome. Subsequent interrogation of the defibrillator revealed that a 34-joule shock had been delivered and had been preceded by RR intervals ranging from 141-406 msec, consistent with sensing lead noise. The remote control utilizes a 12-volt battery and has a carrier frequency of 75.95 MHz and a modulating frequency of 50 Hz. Evaluation of the remote control and defibrillator interaction revealed that the remote control was able to trigger tachyarrhythmia sensing and reproduce the clinical episode. Interference was present only when the remote control was within 8 cm of the pulse generator and at specific angles relative to the device and only when the antenna length was > 45 cm. Interference was eliminated when a ground wire was attached to the antenna and when an aluminium shield was placed between the pulse generator and the remote control. This case report suggests that patients with third generation multiprogrammable defibrillators should be cautioned against close contact with potential sources of electromagnetic interference, such as remote control units.

  7. 78 FR 73415 - Safety Standard for Hand-Held Infant Carriers

    Science.gov (United States)

    2013-12-06

    ... Test: The NPR proposed a modification of the test method for preventing the carrier from rotating and... most of the changes involve adding straps and fasteners or using different mesh or fabric; but could...

  8. Appearance based Key-Shot Selection for a Hand Held Camera

    NARCIS (Netherlands)

    Alefs, B.G.; Dijk, J.

    2009-01-01

    Automatic selection of key-shots is an important step for video data processing. Depending on the purpose, key-shot selection provides user feed back on recorded data, storage reduction and viewpoint selection and it can be used for panoramic image stitching and 3D-reconstruction. In particular, inv

  9. Transforming an Introductory Linear Algebra Course with a TI-92 Hand-Held Computer.

    Science.gov (United States)

    Quesada, Antonio R.

    2003-01-01

    Describes how the introduction of the TI-92 transformed a traditional first semester linear algebra course into a matrix-oriented course that emphasized conceptual understanding, relevant applications, and numerical issues. Indicates an increase in students' overall performance as they found the calculator very useful, believed it helped them…

  10. Environmentally Sustainable Yellow Smoke Formulations for Use in the M194 Hand Held Signal

    Science.gov (United States)

    2012-06-10

    the firing pin in the palm of the hand, an initiating charge burns to ignite the rocket propellant and a delay element, sending the signal assembly... Nitrocellulose (NC) was purchased from Alliant Techsystems, Inc. Magnesium carbonate was obtained from Pine Bluff Arsenal (Pine Bluff, AR). All...the binder system of the BES formulation with nitrocellulose (NC, formulation A) or polyvinyl alcohol (PVA, formulation B). Formulation C is a

  11. Hand-Held and Portable Devices for Oil Assessment: Commercial Technologies for Maintenance Activities

    Science.gov (United States)

    2006-04-05

    contained PFielded for hazmat first responder usage (available as COTS) PHighly intuitive, user-friendly design PNo supplies/consumables PPart of a line of...and action at lowest level PReal-time, no waiting for lab results PNo protracted sampling PEliminates expense on taking, shipping, and testing good oil

  12. Appearance based Key-Shot Selection for a Hand Held Camera

    NARCIS (Netherlands)

    Alefs, B.G.; Dijk, J.

    2009-01-01

    Automatic selection of key-shots is an important step for video data processing. Depending on the purpose, key-shot selection provides user feed back on recorded data, storage reduction and viewpoint selection and it can be used for panoramic image stitching and 3D-reconstruction. In particular,

  13. A hand-held row-column addressed CMUT probe with integrated electronics for volumetric imaging

    DEFF Research Database (Denmark)

    Engholm, Mathias; Christiansen, Thomas Lehrmann; Beers, Christopher;

    2015-01-01

    A 3 MHz, λ / 2-pitch 62+62 channel row-column addressed 2-D CMUT array designed to be mounted in a probe handle and connected to a commercial BK Medical scanner for real-time volumetric imaging is presented. It is mounted and wire-bonded on a flexible PCB, which is connected to two rigid PCBs wit...

  14. Characteristics Study of Portable Hand-Held Phone Antenna by MoM

    Institute of Scientific and Technical Information of China (English)

    李玉莹; 徐晓文

    2003-01-01

    The characteristics of one kind of handset antenna are analyzed by the method of moments. By using the Pocklington equation and the Galerkin method, the current distribution on the handset antenna is calculated, the input impedance and radiation patterns are obtained. In addition, the characteristics of monopoles mounted on conducting chassis box with different sizes are analyzed. The results show that the size of the conducting chassis box has significant effect on the performance of the handset antenna. Therefore, appropriately changing the size of the conducting chassis box may improve the performance of the handset antenna.

  15. A hand-held row-column addressed CMUT probe with integrated electronics for volumetric imaging

    DEFF Research Database (Denmark)

    Engholm, Mathias; Christiansen, Thomas Lehrmann; Beers, Christopher

    2015-01-01

    with pre-amplifiers for driving the cable to the scanner. The array and PCBs are encapsulated in a 3-D printed handle, and a grounded shielding layer and silicone coating is applied to the front-side of the array for physical and electrical isolation. The handle is assembled together with a 192-channel...

  16. Intraoperative detection of radiolabeled compounds using a hand held gamma probe

    Science.gov (United States)

    Ricard, Marcel

    2001-02-01

    Scintillation cameras in Nuclear Medicine allow external detection of cancerous lesions after administration of a specific radiopharmaceutical to the patient. In some particular cases the affinity of the tracer is sufficient to consider the use of an intraoperative probe which enables the surgeon to identify radioactive tissues. A radiopharmaceutical consists of a radioisotope bound to a carrier molecule. The radioactive emissions must represent certain criteria in terms of half-life and energy to be detected during an operation. In the field of intraoperative detection radionuclides like 99mTc, 111In, 125I and 131I fall into this category. Their energy, which ranges from some 10 to 364 keV, cannot be properly detected by a single type of detector. Two technologies have been developed to yield detectors which are handy and sufficiently sensitive: semiconductor CdTe or CdZnTe to detect low energies and scintillator CsI(Tl) for higher energies. Today the intraoperative detection has been evaluated in the case of several pathologies such as osteoid osteoma, colorectal cancer, neuroblastoma, reoperation of differentiated thyroid carcinoma and localization of sentinel node in breast cancer and cutaneous melanoma. Obviously, the results obtained are not comparable from one indication to the other. Nevertheless, the surgeons have noted a considerable advantage in using the intraoperative probe in the case of neuroblastoma and thyroid surgery, especially when the reoperation is difficult or the localizations are ectopic or unusual. As regards the sentinel node, this concept represents a major new opportunity in the field of intraoperative detection and the results actually reported in the literature demonstrate that, when it is detected, elective node excision renders the staging of the disease more accurate. In conclusion, intraoperative detection supplies the surgeon with additional knowledge to be used in correlation with the patient's medical history.

  17. Guidelines for preparing and reviewing applications for the licensing of non-power reactors: Format and Content. NUREG-1537, Part 1

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-02-01

    NUREG - 1537, Part 1 gives guidance to non-power reactor licensees and applicants on the format and content of applications to the Nuclear Regulatory Commission for licensing actions. These licensing actions include construction permits and initial operating licenses, license renewals, amendments, conversions from highly enriched uranium to low-enriched uranium, decommissioning, and license termination.

  18. Guidelines for preparing and reviewing applications for the licensing of non-power reactors: Standard review plan and acceptance criteria. NUREG - 1537, Part 2

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-02-01

    NUREG - 1537, Part 2 gives guidance on the conduct of licensing action reviews to NRC staff who review non-power reactor licensing applications. These licensing actions include construction permits and initial operating licenses, license renewals, amendments, conversions from highly enriched uranium to low-enriched uranium, decommissioning, and license termination.

  19. Combination of Power and Non-power Management Classes Strategies%权力与非权力结合的班级管理策略探讨

    Institute of Scientific and Technical Information of China (English)

    张美芳

    2012-01-01

    班级管理中班主任的影响分为权力影响和非权力影响。权力性影响是指班主任利用自己的职权和学校班级规章制度来管理教育学生;非权力影响是指利用其自身的人格力量、才能、知识、情感、行为,使学生得到感悟、感动。从而自觉接受管理。要结合两种影响的优点做出合理的管理策略,既要实现对班级的控制力,又要利用班主任的个人魅力实现对学生学习生活的指导作用,这就需要权力和非权力影响的结合。%The influence of teacher in class management can be divided into power and no power. The impact of power ref- ers to that teacher uses powers, rules and regulations to manage students; the influence of non-power means that teacher uses force of personality, skills, knowledge, emotion and behavior to make students sentiment, so students will consciously accept management. Previous understanding of that power management is the most important recent conventional wisdom was that the most important is non-power. These two views are one-side, the right management strategy is combing the advantages of the two effects. Teacher not only achieve the right class of control, but also use personal charm to guide students to learn to live, which requires the combination of power and non-power.

  20. 本原不可幂带号有向图的lewin数的界%Bounds on the Lewin Number for Primitive Non-powerful Signed Digraphs

    Institute of Scientific and Technical Information of China (English)

    尤利华; 刘木伙; 柳柏濂

    2012-01-01

    A digraph D is primitive if for some positive integer k there is a walk of length exactly k from each vertex u to each vertex v (possible u again). A signed digraph S is a digraph where each arc of 5 is assigned a sign 1 or -1. A signed digraph S is non-powerful if S contains a pair of SSSD walks which they have the same initial vertex, same terminal vertex and same length, but different signs. In this paper, we study lewin number l(S) for a primitive non-powerful signed digraph 5, which is a generalization of lewin number for a primitive digraph introduced by Lewin M, some upper bounds on l(S) are given, and an open problem is presented.%如果存在正整数k使得对于D中任意两点u和v(允许u=v),在D中都有从u到v的长为k的有向途径,则称有向图D是本原的.给有向图的每条弧赋以符号+1或者-1得到的图S称为带号有向图.如果带号有向图S中包含SSSD途径对,即包含两条有相同的起点,相同的终点,相同的长度,并且有不同的符号的途径对,则称S是不可幂的.在本文中,我们将Lewin M提出的lewin数的概念从本原有向图推广到本原不可幂带号有向图,给出了本原不可幂带号有向图S的lewin数l(S)的若干上界,并提出了一个公开问题.

  1. Human Effectiveness and Risk Characterization of Oleoresin Capsicum (OC) and Pelargonic Acid Vanillylamide (PAVA or Nonivamide) Hand-Held Devices

    Science.gov (United States)

    2007-05-01

    will be small. However, ocular hypertensive effects are possible in the older population and it would be useful to conduct ophthalmologic screening ...as well as exhibiting antioxidant activity. Capsaicin is one of several dietary phytochemicals with potential chemopreventive activity. The

  2. Promising Properties and System Demonstration of an Environmentally Benign Yellow Smoke Formulation for Hand-Held Signals

    Science.gov (United States)

    2014-04-18

    Pyrotechnics, Formulation, System engineering , Solvent Yellow 33, Colored smoke, Product lifecycle management ■ INTRODUCTION In recent years, there...4(OH)2·4H2O, endothermic coolant). It is particularly noteworthy that this formulation does not specify a discrete binder and is composed of all...colored). ACS Sustainable Chemistry & Engineering Research Article dx.doi.org/10.1021/sc500195e | ACS Sustainable Chem. Eng. 2014, 2, 1325−13301326 The

  3. A Novel Hand-Held Optical Imager with Real-Time Co-Registration Facilities Towards Diagnostic Mammography

    Science.gov (United States)

    2012-01-01

    spectroscopy,” UCI Undergraduate Res. J. II, pp. 43–49, 1999. [11] B. J. Tromberg, N. Shah, R. Lanning, A. Cerussi, J. Espinoza , T. Pham, L. Svaasand, and J...mammography,” Acad. Ra- diol., vol. 8, pp. 211–218, 2001. [14] N. Shah, A. Cerussi, C. Eker, J. Espinoza , J. Butler, J. Fishkin, R. Hor- nung, and B

  4. Assessing the usability of different models of hand-held mechanical pipette to determine the best type

    Directory of Open Access Journals (Sweden)

    M. H. Safarian

    2015-09-01

    .Conclusion: Shorter and lighter pipettes, which were designed according to ergonomic principles, had greater usability from the perspective of users and it could cause a better subjective assessment comparing to the other models.

  5. Calculating early warning scores--a classroom comparison of pen and paper and hand-held computer methods.

    Science.gov (United States)

    Prytherch, David R; Smith, Gary B; Schmidt, Paul; Featherstone, Peter I; Stewart, Kate; Knight, Debbie; Higgins, Bernie

    2006-08-01

    To assist in the early detection of critical illness, many hospitals now use a "track and trigger" system that allocates points to routine vital signs measurements on the basis of their derangement from an arbitrarily agreed "normal" range. These points are summed to provide an early warning score (EWS). Little is known about the accuracy with which EWS are calculated and charted. We compared the speed and accuracy of charting the weighted value attributed to each vital sign, and of calculating the EWS, using the traditional pen and paper method with that using a specially programmed, personal digital assistant (VitalPAC). Incorrect entries or omissions occurred in 24 (29%) of 84 EWS computed using pen/paper compared to 8 (10%) computed using the VitalPAC method. Fewer incorrect clinical actions were indicated using EWS derived via the VitalPAC method (4/84, 5%) than from those calculated using pen/paper (12/84, 14%). The mean time (+/-S.D.) taken for participants to calculate and chart a set of weighted values and EWS using the pen/paper method was 67.6+/-35.3 s (n=84). The corresponding time taken to enter a set of physiological data using the VitalPAC was 43.0+/-23.5 s (n=84). By comparison with the conventional pen/paper method, the use of VitalPAC was on average 1.6-times faster. The use of a device such as VitalPAC offers significant advantages both in speed and accuracy of recording of EWS.

  6. Hand-Held EMI Sensor Combined with Inertial Positioning for Cued UXO Discrimination - APG Standardized UXO Test Site

    Science.gov (United States)

    2013-04-01

    Concept of Operation DAQ Data Acquisition Computer DAS Data Analysis System EMI Electromagnetic Induction GIS Geographic Information System GPS Global...Time, Position, Fix Quality, PDOP NMEA-0183 sentence ROC Receiver Operator Characteristic RTK Real-time Kinematic Rx Receive SAINT Small Area...each transmitter. This is too long for a system that is being swept back and forth at a speed of roughly 0.5 m/s. Both the 2x2 array with GPS

  7. Prototype Scale Development of an Environmentally Benign Yellow Smoke Hand-Held Signal Formulation Based on Solvent Yellow 33

    Science.gov (United States)

    2013-04-15

    Propellants , Explos. Pyrotech. 2013, DOI: 10.1002/ prep.201200166. (15) Falvey, J. Limited Use of Modified Grenade Simulators Approved for Use at Camp...Type II) was purchased from Nation Ford Chemical, Inc. Nitrocellulose (NC) was purchased from Alliant Techsystems, Inc. Vinyl alcohol acetate resin...wt % potassium nitrate, 24.5 wt % silicon, 20.8 wt % black iron oxide, 12.3 wt % aluminum, 3.8 wt % charcoal, and 5.6 wt % nitrocellulose in acetone

  8. Hand-held EMI Sensor for Cued UXO Discrimination Man-Portable EMI Array for UXO Detection and Discrimination

    Science.gov (United States)

    2012-03-01

    Aberdeen Proving Ground, MD ................................................................ 26 7.2.2 Remington Woods, CT...Brian Ambrose of DuPont for providing access to the Remington Woods, CT, site as part of their ongoing remediation efforts and to Jeffrey Kronick of...URS Corporation for onsite support at the Remington Woods site. Andrew Schwartz of the U.S. Army Corps of Engineers (USACE), Huntsville provided the

  9. The influence of hand-held information and communication technology on visitor perceptions of risk and risk-related behavior

    Science.gov (United States)

    Steven R. Martin; Kristen Pope

    2012-01-01

    As devices like personal locator beacons become more readily available, more visitors may bring them into wilderness and use them to request rescues and may develop unrealistic expectations of rescue. In an exploratory study in 2009, 235 overnight visitors to the King Range Wilderness in California completed a written survey. Of the respondents, 40 percent considered...

  10. Cellphone-based hand-held microplate reader for point-of-care ELISA testing (Conference Presentation)

    Science.gov (United States)

    Berg, Brandon; Cortazar, Bingen; Tseng, Derek; Ozkan, Haydar; Feng, Steve; Wei, Qingshan; Chan, Raymond Y.; Burbano, Jordi; Farooqui, Qamar; Lewinski, Michael; Di Carlo, Dino; Garner, Omai B.; Ozcan, Aydogan

    2016-03-01

    Enzyme-linked immunosorbent assay (ELISA) in a microplate format has been a gold standard first-line clinical test for diagnosis of various diseases including infectious diseases. However, this technology requires a relatively large and expensive multi-well scanning spectrophotometer to read and quantify the signal from each well, hindering its implementation in resource-limited-settings. Here, we demonstrate a cost-effective and handheld smartphone-based colorimetric microplate reader for rapid digitization and quantification of immunoserology-related ELISA tests in a conventional 96-well plate format at the point of care (POC). This device consists of a bundle of 96 optical fibers to collect the transmitted light from each well of the microplate and direct all the transmission signals from the wells onto the camera of the mobile-phone. Captured images are then transmitted to a remote server through a custom-designed app, and both quantitative and qualitative diagnostic results are returned back to the user within ~1 minute per 96-well plate by using a machine learning algorithm. We tested this mobile-phone based micro-plate reader in a clinical microbiology lab using FDA-approved mumps IgG, measles IgG, and herpes simplex virus IgG (HSV-1 and HSV-2) ELISA tests on 1138 remnant patient samples (roughly 50% training and 50% testing), and achieved an overall accuracy of ~99% or higher for each ELISA test. This handheld and cost-effective platform could be immediately useful for large-scale vaccination monitoring in low-infrastructure settings, and also for other high-throughput disease screening applications at POC.

  11. Microgravity Cell Counter: A Simple Hand-held Low-cost Device for In-flight WBC/Differential Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Spaceflight results in adverse health effects on the human body.   These effects may result in increased clinical risk to crewmembers participating in...

  12. The effects of joint torque, pace and work:rest ratio on powered hand tool operations.

    Science.gov (United States)

    Lin, Jia-Hua; McGorry, Raymond W; Maikala, Rammohan V

    2012-01-01

    Repetitive use of hand-held power tools is associated with work-related upper extremity musculoskeletal disorders. Using a pneumatic nutrunner, 21 men completed twelve 360 repetitive fastener-driving sessions on three joints (hard, soft and control) at slow and fast pace, and two different work:rest patterns. Handgrip force and perceived exertions were collected throughout each session. For the control joint, the mean grip force exerted was 39.6% of maximum voluntary exertion (MVE) whereas during hard and soft joint sessions it was 48.9% MVE and 56.9% MVE, respectively. Throughout each session, the grip force decreased, more while operating soft and hard joints as compared with the control joint (regression slope: -0.022 and -0.023, compared with -0.007 N/drive, respectively), suggesting considerable upper extremity muscular effort by participants during torque buildup. Fast work pace resulted in higher average grip forces by participants but a greater decrease in the force as the session progressed. Providing rest breaks reduced perceived exertions. The findings gain additional knowledge for assembly task design to possibly reduce the hand/arm injury risks for the operator. Practitioner Summary: Powered hand tools are widely used in assembly and manufacturing industries. However, the nature of their repetitive use on human operator biomechanical and perceptual responses is not fully understood. This study examined work-related risk factors such as joint torque, pace and work:rest ratios on powered hand tool performance.

  13. Reorganizing nursing work on surgical units: a time-and-motion study.

    Science.gov (United States)

    Desjardins, France; Cardinal, Linda; Belzile, Eric; McCusker, Jane

    2008-01-01

    A time-and-motion study was conducted in response to perceptions that the surgical nursing staff at a Montreal hospital was spending an excessive amount of time on non-nursing care. A sample of 30 nurse shifts was observed by trained observers who timed nurses' activities for their entire working shift using a hand-held Personal Digital Assistant. Activities were grouped into four main categories: direct patient care, indirect patient care, non-nursing and personal activities. Break and meal times were excluded from the denominator of total worked hours. A total of 201 working hours were observed, an average of 6 hours, 42 minutes per nurse shift. The mean proportions of each nurse shift spent on the main activity categories were: direct care 32.8%, indirect care 55.7%, non-nursing tasks 9.0% and personal 2.5%. Three activities (communication among health professionals, medication verification/preparation and documentation) comprised 78.9% of indirect care time. Greater time on indirect care was associated with work on night shifts and on the short-stay surgical unit. Subsequent work reorganization focused on reducing time spent on communication and medications. The authors conclude that time-and-motion studies are a useful method of monitoring appropriate use of nursing staff, and may provide results that assist in restructuring nursing tasks.

  14. Does "grief work" work?

    NARCIS (Netherlands)

    Stroebe, M; Stroebe, W

    1991-01-01

    This article challenges the long-standing belief in the necessity of "grief work" for adjustment to bereavement. Evidence is offered from a prospective study of 30 widows and 30 widowers that indicates that grief work is not always as essential for adjustment to bereavement as theorists and clinicia

  15. Bases of Primitive Non -powerful Signed Digraphs%含三个圈的本原不可幂定号有向图的基

    Institute of Scientific and Technical Information of China (English)

    王宁; 邵燕灵

    2011-01-01

    In this paper, we study the bases of a class of primitive non - powerful signed di- graphs with three laps. By analyzing this digraph, two laps of three circle have the same length. Firstly, the upper bounds of the bases are obtained with some lemmas and%为了进一步了解本原不可幂定号有向图基的相关性质,对含有三个圈的本原不可幂定号有向图的基进行了研究,通过对图的特点和规律进行分析,即有两个圈长度相同,且都与第三个圈长度不同,首先通过利用用关本原不可幂定号有向图的引理及定义得到基的上界,再运用反证法并综合运用Frobenius集、本原指数、“异圈对”、SSSD途径、岐义指数、图的直径等相关理论和知识,讨论了在这两类图中是否存在所需的SSSD途径对,从而得出了含有三个圈的本原不可幂定号有向图的基的精确值.

  16. Faulty line selection with non-power frequency transient components of distribution network%应用非工频暂态分量的配电网故障选线方法

    Institute of Scientific and Technical Information of China (English)

    康忠健; 李丹丹; 刘晓林

    2011-01-01

    A neutral non-effectual grounding distribution network model is established with Matlab/Simulink and simulated for many eases. As the non-effectively grounding distribution system has distinct transient components at the beginning of single-phase-to-earth fault,HHT(Hilbert-Huang Transform) is applied to calculate the transient frequency components of zero-sequence current,from which the non-power frequency transient components are extracted to detect the single-phase-to-earth fault. Simulative results suggest that,the polarity of non-power frequency component of faulty line is contrary to that of healthy line and the amplitude of non-power frequency of faulty line is much larger than that of healthy line within the one tenth of period after fault. It is proposed to apply the non-power frequency transient components in the faulty line selection for the single-phase-to-earth fault of distribution network. Results indicate it is precise and reliable.%在Matlab/Simulink环境下对小电流接地系统配电网模型进行大量仿真分析,根据小电流接地系统单相接地故障初期具有明显暂态分量的特点,应用希尔伯特-黄变换HHT(Hilbert-Huang Transform)计算出各条出线在单相故障初期各时刻零序电流所含的各种暂态频率分量成分,根据分解结果剔出工频稳态分量从而得到故障特征明显的非工频暂态单相故障特征分量.总结分解变换结果发现:故障后1/10周期时间内故障线路的非工频分量与非故障线路非工频分量极性相反,故障线路非工频量幅值明显大于非故障线路的故障特征.基于此提出一种应用非工频暂态分量的配电网故障选线方法,选线结果表明该方法应用于小电流单相接地故障选线准确可靠.

  17. Mobility Work

    DEFF Research Database (Denmark)

    Bardram, Jakob Eyvind; Bossen, Claus

    2005-01-01

    We posit the concept of Mobility Work to describe efforts of moving about people and things as part of accomplishing tasks. Mobility work can be seen as a spatial parallel to the concept of articulation work proposed by the sociologist Anselm Strauss. Articulation work describes efforts...... of coordination necessary in cooperative work, but focuses, we argue, mainly on the temporal aspects of cooperative work. As a supplement, the concept of mobility work focuses on the spatial aspects of cooperative work. Whereas actors seek to diminish the amount of articulation work needed in collaboration...... by constructing Standard Operation Procedures (SOPs), actors minimise mobility work by constructing Standard Operation Configurations (SOCs). We apply the concept of mobility work to the ethnography of hospital work, and argue that mobility arises because of the need to get access to people, places, knowledge and...

  18. The Lewin index set of primitive non-powerful signed digraphs with girth 2%围长为2的本原不可幂带号有向图的Lewin指数集

    Institute of Scientific and Technical Information of China (English)

    孟凡永; 苗正科; 沈磊

    2012-01-01

    设S是一个本原不可幂带号有向图,则存在正整数k,使得存在u,v∈V(S),S中从u到v有长为k和k+1的有向SSSD途径(SSSD途径是有相同起点、终点、长度和不同符号的一对有向途径),这样的最小正整数k称为S的Lewin指数,记作l(S).给出了围长为2的本原不可幂带号有向图的Lewin指数的最大值和指数集的部分元素.%Let S be a primitive non-powerful signed digraph, then there exists a positive integer k such that for some u,v)∈ V( S), there are two pairs of SSSD walks of lengths k and k+1 from u to v in S( the SSSD walks are a pair of walks with the same initial vertex, same terminal vertex and same lengths, but the distinct signs). The minimum such k is called the Lewin index of S, denoted by US). In this paper, we obtain the maximal element of Lewin index set of primitive non-powerful signed digraphs with girth 2, and some elements of it.

  19. Avaliação de equipamentos de aplicação de herbicidas em operação de repasse em cana-de-açúcar e segurança para o trabalhador Evaluation of herbicide application using backpack sprayers for post-emergence weed control in sugar cane crop and safe work conditions

    Directory of Open Access Journals (Sweden)

    J.G. Machado Neto

    2007-12-01

    Full Text Available Objetivou-se com este trabalho classificar em seguras ou inseguras as condições de trabalho de aplicação da formulação comercial de paraquat a 0,5% e de abastecimento dos tanques em operação de repasse em cultura de cana-de-açúcar com os pulverizadores costal manual, costal pressurizado e Pulmipur manual; determinar o efeito das variações na operação de repasse em quatro usinas de açúcar e álcool com o pulverizador costal pressurizado sobre as exposições dos trabalhadores ao paraquat; determinar a eficácia de equipamentos de proteção individual nessas condições de trabalho; e avaliar a intensidade da deriva e a eficácia de acessórios protetores de deriva. As exposições dérmicas e respiratórias dos trabalhadores foram avaliadas e utilizadas para calcular a margem de segurança (MS. Os valores de MS foram utilizados para classificar essas condições de trabalho em seguras (MS > 1 ou em inseguras (MS The aims of this study were to classify as safe or unsafe the work conditions under which a commercial formulation of paraquat at 0.5% was applied and the loading tanks used for post-emergence weed control of a sugar cane crop, using a hand -held, pressurized sprayer or Pulmipur hand-held backpack sprayer; to determine the effect of variations in herbicide application at four Sugar and Alcohol Plants using a pressurized backpack sprayer on worker exposure to paraquat ; to assess the efficacy of personal protective equipments (PPEs under these work conditions; and to evaluate the extent of drift and PPE efficacy against drift. Dermal and respiratory exposure of the workers was determined and used to calculate the margin of safety (MOS. The MOS values were utilized to classify these work conditions as safe (MOS e" 1 or unsafe (MOS < 1. To evaluate the drift resulting from application on the crops and the efficacy of protective gear against it, the following treatments were studied: a commercial formulation of paraquat at 0

  20. Mobility Work

    DEFF Research Database (Denmark)

    Bardram, Jakob Eyvind; Bossen, Claus

    2005-01-01

    by constructing Standard Operation Procedures (SOPs), actors minimise mobility work by constructing Standard Operation Configurations (SOCs). We apply the concept of mobility work to the ethnography of hospital work, and argue that mobility arises because of the need to get access to people, places, knowledge and....../or resources. To accomplish their work, actors have to make the right configuration of these four aspects emerge....

  1. Developmental Work

    DEFF Research Database (Denmark)

    Møller, Niels; Hvid, Helge; Kristensen, Tage Søndergaard

    2003-01-01

    Human Deveoplment and Working Life - Work for Welfare explores whether the development of human resources at company level can improve individuals' quality of life, companies' possibilities of development, and welfare and democracy in society. Chapter two discuss the concept "developmental work...

  2. Developmental Work

    DEFF Research Database (Denmark)

    Møller, Niels; Hvid, Helge; Kristensen, Tage Søndergaard;

    2003-01-01

    Human Deveoplment and Working Life - Work for Welfare explores whether the development of human resources at company level can improve individuals' quality of life, companies' possibilities of development, and welfare and democracy in society. Chapter two discuss the concept "developmental work...

  3. Variability in mechanical exposure within and between individuals performing a highly constrained industrial work task.

    Science.gov (United States)

    Mathiassen, Svend Erik; Möller, Therése; Forsman, Mikael

    2003-06-20

    Data on exposure variability is an important remedy for designing and interpreting studies of occupational ergonomics. The present study aimed at retrieving the within- and between-subjects variance of several mechanical exposure parameters in a repeated, short-cycle task. Seven experienced operators repeatedly secured joints using two types of hand-held nutrunners. The joints were placed in three different locations on a rack, simulating automotive assembly. Bilateral muscle activity from the upper trapezius and the lower arm extensors, as well as head and upper arm inclination was continuously monitored. Exposure levels and their variance components were assessed in several data subsets using ANOVA. The results were interpreted in terms of statistical precision and power, and discussed as markers of important ergonomic qualities. A substantial exposure variability was found within and between subjects in all joint locations and for both tools. For mixed work across tools and locations, the necessary number of subjects to arrive at a group mean exposure with 95% confidence limits corresponding to +/- 10% of the mean ranged between 8 and 158, with posture recordings tending to require smaller populations than muscle activity recordings. Within-subject variance increased 2- to 37-fold, depending on exposure parameter, when work was 'enlarged' from securings with a specified location and tool to a mix of all locations and tools. Systematic differences between subjects in variability and responsiveness to 'work enlargement' indicated individualized motor control strategies. The results illustrate the importance of exposure variability data to the design of proper measurement strategies. They also suggest that the sizes of exposure variability per se can be interpreted as operational indices of what is thought to be important ergonomic risk indicators, such as the 'sameness' of repeated operations and the allowance for flexible working techniques.

  4. Case work

    DEFF Research Database (Denmark)

    Shaw, Ian Frank

    2016-01-01

    Answers to the question just what is the ?case? partly defined the fields of sociology and social work in early 20th century Chicago. Drawing on the archives of the University of Chicago, I describe and appraise the way the ?case? figured in social work at Chicago and elsewhere. I ask...... the corresponding question of sociology. Finally, I briefly consider why not much came of social work and sociology ploughing similar territory in ways that served for a time to hallmark their identities. This analysis opens up ways of rethinking how social work and sociological research are distinctive...

  5. Paper works

    DEFF Research Database (Denmark)

    Rasmussen, Mattias Borg

    2017-01-01

    of their land and natural resources, but also of labor and territorial sovereignty. This case shows how an Andean campesino community counters such movements by a wide repertoire of legal and social actions that works simultaneously in legal and extra-legal domains. Paper works mediate claims to territorial...

  6. Works Councils

    DEFF Research Database (Denmark)

    Knudsen, Herman Lyhne; Markey, Ray

    2002-01-01

    The article outlines the operation of works councils in Europe and in the context of disscussing their viability in Austalia.......The article outlines the operation of works councils in Europe and in the context of disscussing their viability in Austalia....

  7. Sedentary work

    DEFF Research Database (Denmark)

    Eriksen, Dorte; Rosthøj, Susanne; Burr, Hermann

    2015-01-01

    OBJECTIVE: The aim of this study is to investigate the association between five-year changes in occupational sitting and body mass index (BMI) in working adults. METHODS: We analyzed data from The Danish Work Environment Cohort Study (2005 and 2010, n=3.482). Data on occupational sitting, weight...

  8. Work Stress

    OpenAIRE

    Roeters, Anne

    2014-01-01

    Most of us agree that stress is a growing problem within organizations. We hear about the postal workers who had killed fellow employees and supervisors, and then hear that a major cause of tension is at work. Friends tell us that they are stressed due to increased workload and he has to work overtime because the company is restructured. We read the polls that employees complain about the stress in trying to balance family life with the work. Stress is a dynamic condition in which an individu...

  9. Does "Social Work Abstracts" Work?

    Science.gov (United States)

    Holden, Gary; Barker, Kathleen; Covert-Vail, Lucinda; Rosenberg, Gary; Cohen, Stephanie A.

    2008-01-01

    Objective: The current study seeks to provide estimates of the adequacy of journal coverage in the Social Work Abstracts (SWA) database. Method: A total of 23 journals listed in the Journal Citation Reports social work category during the 1997 to 2005 period were selected for study. Issue-level coverage estimates were obtained for SWA and…

  10. Does "Social Work Abstracts" Work?

    Science.gov (United States)

    Holden, Gary; Barker, Kathleen; Covert-Vail, Lucinda; Rosenberg, Gary; Cohen, Stephanie A.

    2008-01-01

    Objective: The current study seeks to provide estimates of the adequacy of journal coverage in the Social Work Abstracts (SWA) database. Method: A total of 23 journals listed in the Journal Citation Reports social work category during the 1997 to 2005 period were selected for study. Issue-level coverage estimates were obtained for SWA and…

  11. CITA works

    DEFF Research Database (Denmark)

    Ramsgaard Thomsen, Mette; Tamke, Martin; Ayres, Phil;

    2015-01-01

    CITA works documents over 40 projects, events and research collaborations conducted between 2005 and 2014 by the Centre for Information Technology and Architecture (CITA). Through individual project descriptions accompanied by photographic documentation and design drawings, CITA works provides...... readers with insights into our design-led practice-based architectural research which queries how computation challenges the way we think, design and build architecture. With essays by Professor Mette Ramsgaard Thomsen (Head of CITA), and Dr. Jane Burry (Head of the Spatial Information Architecture...... Laboratory, RMIT) the work is contextualised within the field of digital architectural design practice. These essays also identify the emerging questions and maturing methods that continue to inform CITA’s research within this territory. CITA works marks the first 10 years of our research effort...

  12. Non-Powered Spectrophotometry for Lighting Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The spectrum of a light affects crew health.  This solution does not require power or a calibration cycle. The premise is that an optical solution is sufficient...

  13. Paid work and unpaid work

    DEFF Research Database (Denmark)

    Bonke, Jens

    Time-use information is preferably obtained from diaries, as this method is considered more reliable than information from questionnaires. The diary-technique seems to be unique in catching the rhythm of every day life and thereby the structuring of work and leisure during a well......-questions are asked about the time spent on paid work and unpaid/household work. The advantage of the latter technique is that it can easily be integrated into surveys. Thus the American National Survey of Families and Households (NSFH) already contains two waves, and a new wave for 2001-2002, which allows...

  14. Working Collaboratively

    DEFF Research Database (Denmark)

    Holder, Anna; Lovett, George

    2009-01-01

    Working collaboratively is arguably an essential skill in architectural practice as the complexity of contemporary projects involves multiple agents in the conception, construction and use of architecture. This has been emphasised by recent government rhetoric. Mass collaboration has been...... identified as a transformative global force of the last decade, most notably in knowledge and information publishing, communication and creation. This paper presents a structured conversation on changing understandings of collaboration, and the realities of collaborative methodology in architectural work....... Ideas of the platforms and structures necessary to support ‘creative’ collaborations are advanced and tested, and a vocabulary of key terms is developed. The conversation extends to reflect on the role of the architecture profession in supporting or enabling collaboration in architectural works....

  15. Work sampling

    OpenAIRE

    Salas Bacalla, julio; FII-UNMSM

    2014-01-01

    Work sampling is a method of indirect measurement, which means instantaneous observations, to determine the amount of uptime or downtime in a production process El muestreo de trabajo es un método de medición indirecto, que mediante observaciones instantaneas, permite determinar la cantidad de tiempo en actividad o inactividad en un proceso productivo

  16. Hard work

    NARCIS (Netherlands)

    Myra Keizer; Saskia Keuzenkamp

    2011-01-01

    Original title: Moeilijk werken More than one in ten women say they are not available for the labour market because of health complaints. That is almost twice as many as the figure for men. Migrant women, in particular, often cite health as a reason for not being able to work. Are there

  17. Demolition work

    CERN Document Server

    2004-01-01

    Because of demolition work inside Bldg. 251, two containers will be placed on the route Démocrite. For security reasons, the part of this road in front of barrack 553 will be closed to circulation from 5 to 12 November. Thank you, in advance for your understanding. PH-SMI

  18. Road works

    CERN Multimedia

    GS Department

    2010-01-01

    From Monday 11 October until Friday 29 October 2010, the flow of traffic will be disrupted by road works at the roundabout in front of Restaurant No. 2; The number of spaces available in the car park in front of Rest. No. 2 will be reduced. Thank you for your understanding during this period. GS/SEM Group

  19. Wetlands Work

    Science.gov (United States)

    Messina, Linda; Blanchard, Pamela Borne

    2004-01-01

    This article describes how a biology teacher's search for a cross-curricular project in science, math, history, and environmental science, that would help her students connect what they were learning in the classroom to their everyday life, resulted in an ongoing stewardship project. Working together with the Louisiana Sea Grant College Program…

  20. Wetlands Work

    Science.gov (United States)

    Messina, Linda; Blanchard, Pamela Borne

    2004-01-01

    This article describes how a biology teacher's search for a cross-curricular project in science, math, history, and environmental science, that would help her students connect what they were learning in the classroom to their everyday life, resulted in an ongoing stewardship project. Working together with the Louisiana Sea Grant College Program…

  1. Working Parents

    Science.gov (United States)

    ... on your time and energy. For example, the family can work together to clean up the kitchen after dinner; with everyone's help it will get done much quicker and free up some time for you in the evening. Do the same on the ... build family cohesiveness while finishing the job faster, thus leaving ...

  2. Construction work

    CERN Multimedia

    2004-01-01

    Construction work on building 179 will start on the 16th February 2004 and continue until November 2004. The road between buildings 179 and 158 will temporarily become a one way street from Route Democrite towards building 7. The parking places between buildings 179 and 7 will become obsolete. The ISOLDE collaboration would like to apologize for any inconveniences.

  3. Work and minor work contracts

    CERN Document Server

    1999-01-01

    The Work and Minor Work contracts are all of the result-oriented type. The work is specified by CERN and the contractor is given full responsibility for its performance. The contracts are thus very similar to supply contracts. The re-tendering of the existing contracts is almost complete, except for some building maintenance contracts. A new cycle of re-tendering for some activities will be launched in the next twelve months. The total estimated expenditure in the year 2000 for the contracts referred to in this document is 27 750 000 Swiss francs at 1999 prices. The Finance Committee is invited: - to approve the proposed expenditure for the extension of contracts for which the estimated amount for the year 2000 exceeds 750 000 Swiss francs, namely those under references 1, 2, 3, 5, 7, 8, 9 and 23, highlighted in Table I; - to take note that all Work and Minor Work contracts have been tendered since 1 January 1994, except the small contracts shown under references 12 and 16 in Table I; - to take note that the ...

  4. Work-related injuries in trade apprentices.

    Science.gov (United States)

    Driscoll, T; Hanson, M

    1997-12-01

    This study attempted to identify and describe all work-related injuries in a cohort of trade apprentices at the Canberra Institute of Technology over an approximate one-year period. In 997 persons followed for a total of 198,456 days of exposure there were 771 injuries of which 191 were classed as serious (defined as at least one day off work and/or received sutures and/or required hospital treatment). The most common circumstance of injury was a cut to the fingers or hand while using a sharp-edged, non-powered hand tool. At least 52 persons required hospital treatment and another 51 required suturing. Overall rates of injury were 222 (95 per cent confidence interval (CI) = 193 to 256) injuries per 1000 full time equivalents (FTEs) and 169 (95% CI = 147 to 193) injured persons per 1000 persons. Injury rates adjusted for stage (year of course) were significantly different between schools and were highest in the construction and engineering trades groups (chi 2(5) = 57.30, P work-related injury and provides important insights into the characteristics of work-related injuries in trade apprentices. These have significant implications for the safety expectations apprentices may bring to the workplace and for the appropriate targeting of occupational health and safety training of apprentices in the trade occupations.

  5. Computation of high-resolution SAR distributions in a head due to a radiating dipole antenna representing a hand-held mobile phone

    NARCIS (Netherlands)

    Van de Kamer, JB; Lagendijk, JJW

    2002-01-01

    SAR distributions in a healthy female adult head as a result of a radiating vertical dipole antenna (frequency 915 MHz) representing a hand-field mobile phone have been computed for three different resolutions: 2 mm, 1 mm and 0.4 mm. The extremely high resolution of 0.4 mm was obtained with our quas

  6. Reference values of maximum isometric muscle force obtained in 270 children aged 4-16 years by hand-held dynamometry

    NARCIS (Netherlands)

    Beenakker, EAC; van der Hoeven, JH; Fock, JM; Maurits, NM

    2001-01-01

    Since muscle force and functional ability are not related linearly; maximum force can be reduced while functional ability is still maintained. For diagnostic and therapeutic reasons loss of muscle force should be detected as early and accurately as possible. Because of growth factors, maximum muscle

  7. Use of hand-held computers to determine the relative contribution of different cognitive, attitudinal, social, and organizational factors on health care workers' decision to decontaminate hands.

    Science.gov (United States)

    Lee, Karen; Burnett, Emma; Morrison, Kenny; Ricketts, Ian

    2014-02-01

    Observational and survey methods have limitations in measuring hand hygiene behavior. The ability of a personal digital assistant to anonymously gather data at the point of decision making could potentially address these. Participants were provided with a personal digital assistant to be used for three 2-hour periods and asked to rate influential factors of the Health Belief Model (HBM). Participants were also required to enter what they thought they should do and what they actually did. A total of 741 hand hygiene opportunities was recorded. All HBM constructs were higher for hand hygiene opportunities where there was compliance versus noncompliance, with a significant difference for patient pressure, my risk, perceived benefits, perceived seriousness, and availability of good facilities. Only 20% of doctors, 28% of nurses, and 66% of physiotherapists always did what they thought they should. There was no correlation between self-reported and actual compliance. The HBM appeared to be a useful theoretical framework. Surprisingly, participants rated their compliance as high despite having recorded instances where they did not do what they thought they should do. This suggests that staff may have a different definition of compliance than strict observation of the guidelines. Copyright © 2014 Association for Professionals in Infection Control and Epidemiology, Inc. Published by Mosby, Inc. All rights reserved.

  8. Detection performance assessment of hand-held mine detection systems in a procurement process: test set-up for MDs and MD/GPRs

    NARCIS (Netherlands)

    Schoolderman, A.J.; Roosenboom, J.H.J.

    2005-01-01

    The Engineers Centre of Expertise of the Royal Netherlands Army (RNLA) has conducted a study on countermine in peace operations. This study, finished in 2002, concluded that the final solution to countermine will depend in the first place on better detection of buried low-metal mines, e.g. by direct

  9. Sensitivity and specificity of a hand-held milk electrical conductivity meter compared to the California mastitis test for mastitis in dairy cattle.

    Science.gov (United States)

    Fosgate, G T; Petzer, I M; Karzis, J

    2013-04-01

    Screening tests for mastitis can play an important role in proactive mastitis control programs. The primary objective of this study was to compare the sensitivity and specificity of milk electrical conductivity (EC) to the California mastitis test (CMT) in commercial dairy cattle in South Africa using Bayesian methods without a perfect reference test. A total of 1848 quarter milk specimens were collected from 173 cows sampled during six sequential farm visits. Of these samples, 25.8% yielded pathogenic bacterial isolates. The most frequently isolated species were coagulase negative Staphylococci (n=346), Streptococcus agalactiae (n=54), and Staphylococcus aureus (n=42). The overall cow-level prevalence of mastitis was 54% based on the Bayesian latent class (BLC) analysis. The CMT was more accurate than EC for classification of cows having somatic cell counts >200,000/mL and for isolation of a bacterial pathogen. BLC analysis also suggested an overall benefit of CMT over EC but the statistical evidence was not strong (P=0.257). The Bayesian model estimated the sensitivity and specificity of EC (measured via resistance) at a cut-point of >25 mΩ/cm to be 89.9% and 86.8%, respectively. The CMT had a sensitivity and specificity of 94.5% and 77.7%, respectively, when evaluated at the weak positive cut-point. EC was useful for identifying milk specimens harbouring pathogens but was not able to differentiate among evaluated bacterial isolates. Screening tests can be used to improve udder health as part of a proactive management plan. Copyright © 2012 Elsevier Ltd. All rights reserved.

  10. A new integrated approach for characterizing the soil electromagnetic properties and detecting landmines using a hand-held vector network analyzer

    NARCIS (Netherlands)

    Lopra, O.; Lambot, S.; Slob, E.; Vanclooster, M.; Macq, B.; Milisavljevic, N.

    2006-01-01

    The application of ground-penetrating radar (GPR) in humanitarian demining labors presents two major challenges: (1) the development of affordable and practical systems to detect metallic and non-metallic antipersonnel (AP) landmines under different conditions, and (2) the development of accurate so

  11. 手持电圆锯的改良性设计研讨%The Modified Design of Hand-held Electric Circular Saw

    Institute of Scientific and Technical Information of China (English)

    王吉喆; 潘磐; 张新宇

    2016-01-01

    [Abstract]The product design of tools, especially for electric tools, is usually difficult for designers under limited size. For the design of tools, designer is like a dancer dancing with shackles, to present the most perfect product under the smallest size. In this paper, some design elements of electric circular saw, including function, shape, material, color, man-machine relationship, consumer groups, and market, are analyzed to get the elements which can be improved for the current electric circular saw design. Blending the modeling and function to produce technical beauty, considering the humanization design for special users, new design concepts of electric circular saw are conceived based on the survey.%工具类的产品设计,特别是电动工具,往往设计是具有一定难度的,因为其受到很大的局限性,因此,对于工具类别的设计来说,设计师如同戴着镣铐的舞蹈家一样,要以最小的尺度演绎出最完美的精彩。本文对目前电圆锯的功能、造型、材料、色彩、人机关系、消费人群与市场等设计要素进行分析,从而得出目前市场上电圆锯设计可以进行突破和改良的要素。以如何体现产品中造型与功能交融而产生的技术美,考虑特殊使用者的人性化设计为重点,基于调研结果为基础对电圆锯进行了设想,提出新的设计概念。

  12. Simulating Human and Environmental Exposure from Hand-Held Knapsack Pesticide Application: Be-WetSpa-Pest, an Integrative, Spatially Explicit Modeling Approach.

    Science.gov (United States)

    Binder, Claudia R; García-Santos, Glenda; Andreoli, Romano; Diaz, Jaime; Feola, Giuseppe; Wittensoeldner, Moritz; Yang, Jing

    2016-05-25

    This paper presents an integrative and spatially explicit modeling approach for analyzing human and environmental exposure from pesticide application of smallholders in the potato-producing Andean region in Colombia. The modeling approach fulfills the following criteria: (i) it includes environmental and human compartments; (ii) it contains a behavioral decision-making model for estimating the effect of policies on pesticide flows to humans and the environment; (iii) it is spatially explicit; and (iv) it is modular and easily expandable to include additional modules, crops, or technologies. The model was calibrated and validated for the Vereda La Hoya and was used to explore the effect of different policy measures in the region. The model has moderate data requirements and can be adapted relatively easily to other regions in developing countries with similar conditions.

  13. Agreement in Body Fat Estimates between a Hand-Held Bioelectrical Impedance Analyzer and Skinfold Thicknesses in African American and Caucasian Adolescents

    Science.gov (United States)

    Hannon, James C.; Ratliffe, Thomas; Williams, Daniel P.

    2006-01-01

    The body mass index (BMI), or the ratio of weight in kilograms to the square of height in meters, is widely used to determine the presence or absence of overweight and obesity in adults. Although many consider BMI an acceptable clinical surrogate of body fatness, it does not differentiate between fat and fat-free tissues. Thus, children and…

  14. An approach to precise nitrogen management using hand-held crop sensor measurements and winter wheat yield mapping in a Mediterranean environment.

    Science.gov (United States)

    Quebrajo, Lucía; Pérez-Ruiz, Manuel; Rodriguez-Lizana, Antonio; Agüera, Juan

    2015-03-06

    Regardless of the crop production system, nutrients inputs must be controlled at or below a certain economic threshold to achieve an acceptable level of profitability. The use of management zones and variable-rate fertilizer applications is gaining popularity in precision agriculture. Many researchers have evaluated the application of final yield maps and geo-referenced geophysical measurements (e.g., apparent soil electrical conductivity-ECa) as a method of establishing relatively homogeneous management zones within the same plot. Yield estimation models based on crop conditions at certain growth stages, soil nutrient statuses, agronomic factors, moisture statuses, and weed/pest pressures are a primary goal in precision agriculture. This study attempted to achieve the following objectives: (1) to investigate the potential for predicting winter wheat yields using vegetation measurements (the Normalized Difference Vegetation Index-NDVI) at the beginning of the season, thereby allowing for a yield response to nitrogen (N) fertilizer; and (2) evaluate the feasibility of using inexpensive optical sensor measurements in a Mediterranean environment. A field experiment was conducted in two commercial wheat fields near Seville, in southwestern Spain. Yield data were collected at harvest using a yield monitoring system (RDS Ceres II-volumetric meter) installed on a combine. Wheat yield and NDVI values of 3498 ± 481 kg ha(-1) and 0.67 ± 0.04 nm nm(-1) (field 1) and 3221 ± 531 kg ha(-1) and 0.68 ± 0.05 nm nm(-1) (field 2) were obtained. In both fields, the yield and NDVI exhibited a strong Pearson correlation, with r(xy) = 0.64 and p sensor-based N management can be applied to wheat production in Spain and has the potential to increase agronomic N-use efficiency on a long-term basis.

  15. Design of an adaptive LNA for hand-held devices in a 1-V 90-nm standard RF CMOS technology: From circuit analysis to layout

    OpenAIRE

    2009-01-01

    [ES]: Este trabajo presenta el diseño de un amplificador de bajo ruido, LNA (del inglés Low‐Noise Amplifier) reconfigurable para la siguiente generación de dispositivos portátiles de comunicación inalámbricos, usando la aproximación de circuitos concentrados sustentada en leyes físicas. El propósito de este trabajo no es sólo presentar resultados de simulación que muestran el cumplimiento de especificaciones para cada estándar, sino también demostrar que cada paso de diseño ...

  16. Hand-held lactate analyzer as a tool for the real-time measurement of physical fatigue before slaughter and pork quality prediction.

    Science.gov (United States)

    Rocha, L M; Dionne, A; Saucier, L; Nannoni, E; Faucitano, L

    2015-04-01

    The objectives of this study were to assess the relationship between blood lactate variation measured at the plant, and pork quality variation on a large sample size and under commercial preslaughter handling conditions. A total of 600 pigs were randomly chosen on arrival at a commercial slaughter plant and blood samples taken from the ear vein at unloading (UN), after lairage (LA), in the restrainer (RE; before stunning) and at exsanguination (EX) were analysed for lactate content using a Lactate Scout Analyzer (LSA). In order to have a large range of measures, pigs were distributed into two groups; one kept in lairage overnight (G1) and the other for 2 to 3 h (G2) before slaughter. Meat quality was assessed in the Longissimus thoracis (LT), Semimembranosus (SM) and Adductor (AD) muscles by measuring the pH 30 min postmortem (pH1) and at 24 h postmortem (pHu), the colour and the drip loss. Blood lactate levels did not differ between G1 and G2 (P>0.05). A reduced muscle lactate and glucose contents (P=0.02 and P=0.004, respectively) resulting in a lower (Pmuscle of G1 pigs when compared with G2 loins. In the LT muscle of G1 pigs, the lower GP resulted in an increased pHu (r=-0.67; Pmuscles (r=-0.73; Pmuscles (r=0.46 and r=0.44, respectively; Pmuscles). The second greatest correlation was found between blood lactate levels at EX and pH1 value in the SM muscle in both groups (r=-0.37 and r=-0.41, respectively; Pexplain the variation in pork quality.

  17. Automation Study for Longhorn Army Ammunition Plant Hand Held Signal Flight Assembly, Rocket Barrel Assembly, 40 MM Signal, Final Packaging/Pack-Out, and Star Finishing

    Science.gov (United States)

    1990-03-01

    Kenneth Shackelford, Carl Walek, Gene Muehleisen, Jamie Horning, Hugh Hines, Doyle Dorsey, Delbert Barton, John Broderick, E.V. Wilson, Hoss Watkins...refilled a maximum of four cimes an hour. The delay assembly contains energetic material and should be stacked so the material can not rub against the

  18. A comparison of head-mounted and hand-held displays for 360° videos with focus on attitude and behavior change

    DEFF Research Database (Denmark)

    Fonseca, Diana; Kraus, Martin

    2016-01-01

    a between-group design experiment that compares two systems with different levels of immersion and two types of narratives, one with and one without emotional content. In the immersive video (IV) condition (high immersion), 21 participants used a Head-Mounted Display (HMD) to watch an emotional 360° video...

  19. Preoperative scintigraphic and intraoperative scintimetric localization of parathyroid adenoma with cationic Tc-99m complexes and a hand-held gamma-probe

    Energy Technology Data Exchange (ETDEWEB)

    Gallowitsch, H.J. [Dept. of Nuclear Medicine and Special Endocrinology, Landeskrankenhaus Klagenfurt (Austria); Fellinger, J. [Dept. of Surgery, Landeskrankenhaus Klagenfurt (Austria); Kresnik, E. [Dept. of Nuclear Medicine and Special Endocrinology, Landeskrankenhaus Klagenfurt (Austria); Mikosch, P. [Dept. of Nuclear Medicine and Special Endocrinology, Landeskrankenhaus Klagenfurt (Austria); Pipam, W. [Dept. of Mental Health, Landeskrankenhaus Klagenfurt (Austria); Lind, P. [Dept. of Nuclear Medicine and Special Endocrinology, Landeskrankenhaus Klagenfurt (Austria)

    1997-01-01

    Aim: The aim of our study was to evaluate the possibility of intraoperative scintimetric detection of parathyroid adenomas with Tc-99m labelled tracers for its usefulness in dystopic or ectopic adenomas. Methods: 12 Women with biochemically confirmed hyperparathyroidism were included in our study. After injection of 370 MBq Tc-99m tetrofosmin e.g. sestamibi, preoperative scintigraphy (double phase study and SPECT) was performed and T/NT ratios were evaluated for early, delayed and SPECT images. Surgery was performed using a handheld gamma-probe after preoperative injection of 555-925 MBq Tc-99m tetrofosmin e.g. sestamibi. Count rates (cts/10 sec) were measured and used for calculating in situ - and ex situ - T/NT ratios. Results: In 9 out of 12 patients, adenoma could be detected on static images. Mean T/NT ratios for Tc-99m tetrofosmin were 1.29 for early and 1.23 for delayed images, respectively 1.39 and 1.23 for early and delayed Tc-99m sestamibi scan. Three cases could only be detected with SPECT reconstruction. 11 of 12 parathyroid adenomas could be confirmed intraoperatively. Conclusion: SPECT with Tc-99m labelled cationic complexes showed advantages in detection, precise localization and contrast over static scintigraphy and should therefore be performed at least in cases with poor or no uptake on static images to avoid failures in detection of deeply sited, dislocated glands or adenomas with low uptake. Intraoperative localization and confirmation of parathyroid adenoma with Tc-99m-labelled cationic complexes and a gamma probe is possible and may be useful in case of dys- or ectopic adenoma by influencing surgical approach and operating time. (orig.) [Deutsch] Ziel: Ziel unserer Untersuchung war es, die Moeglichkeit des intraoperativen szintimetrischen Nachweises von NSD-Adenomen mit Tc-99m-markierten Komplexverbindungen fuer den eventuellen Einsatz bei ektopen NSD-Adenomen zu ueberpruefen. Methoden: 12 Frauen mit biochemisch gesichertem Hyperparathyroidismus (11 parimaer und 1 sekundaer) wurden in unsere Studie aufgenommen. Die praeoperative Lokalisationsdiagnostik erfolgte mittels Doppelphasenszintigramm und SPECT nach Injektion von 370 MBq Tc-99m-Tetrofosmin bzw. -Sestamibi, mit anschliessender Errechnung von T/NT-Ratios. Die intraoperative Szintimetrie erfolgte mittels einer tragbaren Gammasonde (C-TRAK{sup R}, Carewise Inc., Morgan Hill, CA) nach praeoperativer Injektion von 555-925 MBq Tc-99m-Tetrofosmin bzw. -Sestamibi. Mittlere Zaehlraten (cts/10 sec) wurden gemessen und fuer die Errechnung von in-situ- und Ex-situ-T/NT-Raten herangezogen. Ergebnisse: In 9 von 12 Patienten konnte der Lokalisationsnachweis bereits auf statischen Aufnahmen erbracht werden, 3 Adenome konnten lediglich mittels SPECT-Rekonstruktion nachgewiesen werden. 11 von 12 Adenomen konnten intraoperativ szintimetrisch lokalisiert werden. Schlussfolgerung: Die intraoperative Lokalisation und Bestaetigung von NSD-Adenomen mit kationischen Tc-99m-Komplexen mittels Szintimetrie erscheint moeglich und kann die Operationszeit bei ektopen Nebenschilddruesenadenomen reduzieren. (orig.)

  20. Optimized data analysis algorithm for on-site chemical identification using a hand-held attenuated total reflection Fourier transform infrared (ATR FT-IR) spectrometer.

    Science.gov (United States)

    Ron, Izhar; Zaltsman, Amalia; Kendler, Shai

    2013-12-01

    On-site identification of organic compounds in the presence of interfering materials using a field-portable attenuated total reflection Fourier transform infrared (ATR FT-IR) spectrometer is presented. Identification is based on an algorithm that compares the analyte's infrared absorption spectrum with the reference spectra. The comparison is performed at several predetermined frequencies, and a similarity value (distance) between the measured and the reference spectra is calculated either at each frequency individually, or, alternatively, the average distance for all frequencies is calculated. The examined frequencies are selected to give the best contrast between the target materials of interest. In this study, the algorithm was optimized to identify three common chemical warfare agents (CWAs): O-ethyl S-[2-(diisopropylamino)ethyl] methylphosphonothioic acid (VX), sarin (GB), and sulfur mustard (bis(2-chloroethyl) sulfide) (HD), in the presence of field-related interfering materials (fuels, water, and dust). Receiver operating characteristics analysis was performed in order to determine the probabilities for detection (PD) and for false alerts (PF). Challenging the algorithm with a set of data that contains mixtures of CWAs and interfering materials resulted in PD of 90% and PF of 0%, 0%, and 1% for VX, GB, and HD, respectively, using the average distance approach, which was found to be much more effective than analyzing each frequency individually. This finding was validated for all possible combinations of 2-7 peaks per material. It is suggested that this algorithm provides a reliable mean for the identification of a predetermined set of target analytes and interfering materials.

  1. 手持式线激光源3D扫描系统%A Simple 3D Scanner Using a Hand -Held Laser Source

    Institute of Scientific and Technical Information of China (English)

    熊汉伟; 张湘伟

    2001-01-01

    以手持式线激光源为工具,采用摄像方式,实现一种简便、易行的3D表面快速反求建模方法;避免了复杂的光学系统、机电控制系统设计,只需在线激光源扫掠物体表面的同时,连续摄像,通过对光条图象序列进行处理,得到物体的3D模型.文中给出了复杂形体的建模实例,效果基本满意.

  2. Detection of foot-and-mouth disease virus in the breath of infected cattle using a hand-held device to collect aerosols

    DEFF Research Database (Denmark)

    Christensen, Laurids Siig; Brehm, Katharina E.; Skov, Julia

    2011-01-01

    electrostatic particle capture in a microchip chamber of 10–15μL and was shown to effectively capture a high percentage of airborne microorganisms. The particles were eluted subsequently from the chip chamber and subjected to real-time RT-PCR. Sampling exhaled air for as little as 1min allowed the detection...

  3. Evaluating the reliability of a novel neck-strength assessment protocol for healthy adults using self-generated resistance with a hand-held dynamometer.

    Science.gov (United States)

    Versteegh, Theo; Beaudet, Danielle; Greenbaum, Marla; Hellyer, Leah; Tritton, Amanda; Walton, Dave

    2015-01-01

    Objectif : Évaluer la convergence test-retest intra et intersessionnelle d'un nouveau protocole d'évaluation de la force du cou au moyen d'un dynamomètre portatif. Contexte: Une recension des écrits a révélé un manque de protocoles d'évaluation de la force du cou à la fois portables et fiables. La dynamométrie manuelle est une méthode portable et peu coûteuse d'évaluation de la force musculaire, mais elle n'est pas utilisée couramment pour évaluer la force du cou. Méthodes : On a utilisé un dynamomètre portatif pour évaluer la force du cou chez 30 participants en bonne santé. On a mesuré la force maximale en flexion cervicale, extension, flexion latérale, flexion latérale avec rotation et rotation pure en utilisant la main ipsilatérale pour appliquer une résistance isométrique pendant 3 secondes. On a pris trois mesures en 6 à 8 jours. Résultats : Les coefficients de corrélation intraclasse (CCI) de test-retest ont révélé une grande fiabilité variant de 0,94 à 0,97 dans le cas de toutes les directions vérifiées de l'essai 1 à l'essai 2 (fiabilité intrasessionnelle) [CCI (2,1), absolu]. Les valeurs CCI ont démontré une fiabilité intersessionnelle variant de bonne à élevée, variant de 0,87 à 0,95 dans le cas de toutes les directions mises à l'épreuve de l'essai 1 à l'essai 3 [CCI (2,1), absolu]. Conclusion : Les résultats indiquent qu'il est possible d'appliquer le protocole d'évaluation de la force du cou et du quadrant supérieur par les cinq positions d'essai en utilisant la dynamométrie manuelle, et qu'il produit une fiabilité variant de bonne à élevée.

  4. Collaborative Exploration with a Micro Aerial Vehicle: A Novel Interaction Method for Controlling a MAV with a Hand-Held Device

    Directory of Open Access Journals (Sweden)

    David Pitman

    2012-01-01

    Full Text Available In order to collaboratively explore an environment with a Micro Aerial Vehicle (MAV, an operator needs a mobile interface, which can support the operator’s divided attention. To this end, we developed the Micro Aerial Vehicle Exploration of an Unknown Environment (MAV-VUE interface, which allows operators with minimal training the ability to remotely explore their environment with a MAV. MAV-VUE employs a concept we term Perceived First-Order (PFO control, which allows an operator to effectively “fly” a MAV with no risk to the vehicle. PFO control utilizes a position feedback control loop to fly the MAV while presenting rate feedback to the operator. A usability study was conducted to evaluate MAV-VUE. This interface was connected remotely to an actual MAV to explore a GPS-simulated urban environment.

  5. RESUMING WORK

    CERN Multimedia

    Service Médical

    2000-01-01

    In application of the Staff Rules and Regulations, every member of the CERN personnel is required to undergo a medical examination on resuming work after sick leave: - if the medical absence has been for 21 calendar days or longer, - if absent more than 48 hours due to professional accident. It is incumbent upon the member of the personnel himself/herself to contact the Medical Service 73186, without awaiting its summons.

  6. Works notice

    CERN Multimedia

    GS Department

    2009-01-01

    We would like to inform you that renovation work on the road lighting equipment will take place on the Meyrin site between 19 October and 18 December 2009. During this period, traffic will be disrupted on the Schrödinger, Perrin and Siegbahn roads, ie from Building 274 to Building 188. We request that you comply with the road signs and thank you for your understanding. GS-SEM Group

  7. RESUMING WORK

    CERN Multimedia

    Medical Service

    2001-01-01

    In application of the Staff Rules and Regulations, every member of the CERN personnel is required to undergo a medical examination on resuming work after sick leave: if the medical absence has been for 21 calendar days or longer, if absent more than 48 hours due to professional accident. It is incumbent upon the member of the personnel himself/herself to contact the Medical Service 73186, without awaiting its summons.

  8. RESUMING WORK

    CERN Multimedia

    Medical Service

    2002-01-01

    In application of the Staff Rules and Regulations, every member of the CERN personnel is required to undergo a medical examination on resuming work after sick leave: if the medical absence has been for 21 calendar days or longer, if absent more than 48 hours due to professional accident. It is incumbent upon the member of the personnel himself/herself to contact the Medical Service 73186, without awaiting its summons. Medical Service

  9. RESUMING WORK

    CERN Multimedia

    Service Médical

    2000-01-01

    In application of the Staff Rules and Regulations, every member of the CERN personnel is required to undergo a medical examination on resuming work after sick leave: if the medical absence has been for 21 calendar days or longer, if absent more than 48 hours due to professional accident. It is incumbent upon the member of the personnel himself/herself to contact the Medical Service 73186, without awaiting its summons.

  10. RESUMING WORK

    CERN Multimedia

    Medical Service

    2002-01-01

    In application of the Staff Rules and Regulations, every member of the CERN personnel is required to undergo a medical examination on resuming work after sick leave: if the medical absence has been for 21 calendar days or longer, if absent more than 48 hours due to professional accident. It is incumbent upon the member of the personnel himself/herself to contact the Medical Service 73186, without awaiting its summons. Medical Service

  11. Paid work and unpaid work

    DEFF Research Database (Denmark)

    Bonke, Jens

    Time-use information is preferably obtained from diaries, as this method is considered more reliable than information from questionnaires. The diary-technique seems to be unique in catching the rhythm of every day life and thereby the structuring of work and leisure during a well-defined and memo...

  12. RESUMING WORK

    CERN Multimedia

    2003-01-01

    In application of the Staff Rules and Regulations, every member of the CERN personnel is required to undergo a medical examination on resuming work after sick leave: - if the medical absence has been for 21 calendar days or longer - if absent more than 48 hours due to professional accident It is incumbent upon the member of the personnel himself/herself to contact the Medical Service Tel. 73186, without awaiting its summons. The purpose of this exam is not to check on the absenteeism, but to support the professional reinsertion. Medical Service

  13. RESUMING WORK

    CERN Multimedia

    2003-01-01

    In application of the Staff Rules and Regulations, every member of the CERN personnel is required to undergo a medical examination on resuming work after sick leave: - if the medical absence has been for 21 calendar days or longer - if absent more than 48 hours due to professional accident It is incumbent upon the member of the personnel himself/herself to contact the Medical Service tel. 73186, without awaiting its summons. The purpose of this exam is not to check on the absenteeism, but to support the professional reinsertion. Medical Service

  14. RESUMING WORK

    CERN Multimedia

    2004-01-01

    In application of the Staff Rules and Regulations, every member of the CERN personnel is required to undergo a medical examination on resuming work after sick leave: • if the medical absence has been for 21 calendar days or longer • if absent more than 48 hours due to professional accident It is incumbent upon the member of the personnel himself/herself to contact the Medical Service tel. 73186, without awaiting its summons. The purpose of this exam is not to check on the absenteeism, but to support the professional reinsertion. Medical Service

  15. Work team

    Directory of Open Access Journals (Sweden)

    RBE Editorial

    2016-06-01

    Full Text Available Work Team 2016 (Jan-Jul1. Editorial TeamChief-editorsBayardo Bapstista Torres, Instituto de Química (USP, BrasilEduardo Galembeck, Depto. Bioquímica, Instituto de Biologia, Universidade de Campinas (Unicamp, Brasil Co-editorsGabriel Gerber Hornink, Depto. Bioquímica, Instituto de Ciências Biomédicas, Universidade - Federal de Alfenas (Unifal-MG, BrasilVera Maria Treis Trindade, Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS, Brasil Editorial BoardAdriana Cassina, Department of Biochemistry, Facultad de Medicina, Universidad de la República, UruguayAngel Herráez, Departamento de Bioquímica y Biología molecular, Universidad de Alcalá de Henares, Madrid, SpainAndré Amaral Gonçalves Bianco, Universidade Federal de São Paulo (Unifesp, BrasilDenise Vaz de Macedo, Depto. Bioquímica, Instituto de Biologia, Universidade Estadual de Campinas (Unicamp, BrasilEneida de Paula, Depto. Bioquímica, Instituto de Biologia, Universidade Estadual de Campinas (Unicamp, BrasilJose Antonio Martinez Oyanedel, Universidad de Concepción, ChileJosep Maria Fernández Novell, Department of Molecular Biology & Biochemistry, Universitat de Barcelona, SpainLeila Maria Beltramini, Instituto de Física de São Carlos, Universidade Estadual de São Paulo (USP, BrasilManuel João da Costa, Escola de Ciências da Saúde, Universidade do Minho, PortugalMaria Lucia Bianconi, Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro (UFRJ, BrasilMaría Noel Alvarez, Department of Biochemistry, Facultad de Medicina, Universidad de la República, UruguayMiguel Ángel Medina Torres, Department of Molecular Biology & Biochemistry Faculty of Sciences University of Málaga, SpainNelma Regina Segnini Bossolan, Instituto de Física de São Carlos, Universidade de São Paulo (USP, BrasilPaulo De Avila Junior, Centro de Ciências Naturais e Humanas (CCNH Universidade Federal do ABC (UFABC

  16. Influence of trunk muscle co-contraction on spinal curvature during sitting for desk work.

    Science.gov (United States)

    Watanabe, S; Eguchi, A; Kobara, K; Ishida, H

    2007-09-01

    Nowadays, a lot of office workers are forced to sit at a desk for many hours while doing their jobs. While sitting, the pelvis rotates backwardly, and lumbar lordosis is flattened. At the same time, the load on the intervertebral discs and spine increases. Sitting in a slumped position is known to increase disc pressure even more, and to aggravate chronic low back pain (CLBP). Therefore, it is very important to teach workers about the correct sitting posture. In addition, it has been recognized that co-contraction of the deep spine-stabilizing muscles enhances lumbar segmental stability and the sacro-iliac joint. However, little is known about the influence of co-contraction of the trunk deep muscles on spinal curvature during sitting for while doing desk work. The purpose of this study was to compare EMG (electromyographic) activity of the trunk muscles during slump sitting with that during co-contraction of the trunk muscles and to investigate how this co-contraction influences spinal curvature. Ten healthy male volunteers (21.7 +/- 2.5 years old) without CLBP participated in the study. Bipolar surface electrodes were attached to the rectus abdominis, the obliquus externus abdominis, the obliquus internus abdominis, the lower back extensor muscles (L3) and the multifidus on the right side. EMG signals were continuously recorded during slump sitting and co-contraction of the trunk muscles, simulating a desk work sitting posture; i.e., slightly inclined forward. They were amplified, band-pass filtered, digitized and stored by a data acquisition system. The average muscle activity values over the five-second sample for each sitting posture were normalized to maximal voluntary contractions (%MVC). While the subjects performed both sitting postures, the curvature of the spine was measured using a new skin-surface and hand-held device, the "Spinal Mouse". More significant activities of the trunk muscles, with the exception of the rectus abdominis, were observed during

  17. Balancing Machine Work, Comfort Work, and Sentimental Work

    DEFF Research Database (Denmark)

    Pedersen, Maria Ie; Hansen, Magnus; Hertzum, Morten

    2011-01-01

    and attention. We investigate ambulance care in three of Denmark’s five healthcare regions, which staff ambulances with emergency medical technicians, paramedics, and physicians. Using the concept of illness trajectory we analyse how the ambulance crews balance machine work, which involves continuously...... work, but also that this has negative consequences. Equipment for use in ambulances should aim at supporting the ambulance crews in competently and dynamically balancing the different types of work and should, consequently, avoid binding the crew’s attention for unbroken periods of time....... monitoring the equipment, comfort work, which is actions taken to relieve the pain or discomfort of the patient, and sentimental work, which is care for the patient’s physical and mental well-being, often verbal in nature. The analysis shows that comfort and sentimental work often takes priority over machine...

  18. Returning to Work

    Science.gov (United States)

    ... when work tasks can be upgraded to full duty. What can a person returning to work do? ... to-work program that includes transitional work for employees is an important component of a company's healthy ...

  19. Meaningful work, work engagement and organisational commitment

    Directory of Open Access Journals (Sweden)

    Madelyn Geldenhuys

    2014-02-01

    Full Text Available Orientation: Meaningful work can yield benefits for organisations and lead to positive work outcomes such as satisfied, engaged and committed employees, individual and organisational fulfilment, productivity, retention and loyalty.Research purpose: The aim of the study was to investigate the relationships amongst psychological meaningfulness, work engagement and organisational commitment and to test for a possible mediation effect of work engagement on the relationship between psychological meaningfulness and organisational commitment.Motivation for the study: Managers have to rethink ways of improving productivity and performance at work, due to the diverse, and in some instances escalating, needs of employees (e.g. financial support to uphold their interest in and enjoyment of working.Research approach, design and method: A quantitative approach was employed to gather the data for the study, utilising a cross-sectional survey design. The sample (n = 415 consisted of working employees from various companies and positions in Gauteng, South Africa.Main findings: The results confirmed a positive relationship between psychological meaningfulness, work engagement and organisational commitment. Further, psychological meaningfulness predicts work engagement, whilst psychological meaningfulness and work engagement predict organisational commitment.Practical/managerial implications: Employers identifying their employees’ commitment patterns and mapping out strategies for enhancing those that are relevant to organisational goals will yield positive work outcomes (e.g. employees who are creative, seek growth or challenges for themselves.Contribution/value-add: This study contributes to the literature through highlighting the impact that meaningful work has on sustaining employee commitment to the organisation.

  20. New ways of working and work engagement

    NARCIS (Netherlands)

    Baudewijns, C.; Gerards, R.; de Grip, A.

    2015-01-01

    This article investigates whether New Ways of Working (NWW) are related to employee work engagement in the Netherlands. We test our hypotheses using a sample of 656 employees from 14 industry sectors and 12 occupational fields. Our study reveals that three facets of NWW positively affect work

  1. Knowledge work and work-related stress

    DEFF Research Database (Denmark)

    Ipsen, Christine

    2006-01-01

    Work-related stress is an increasing problem in Europe. Earlier studies have stated that knowledge-work comprises working conditions which reflect a good psychosocial environment. Recent Danish studies, however, point at stress being an increasing problem in knowledge-intensive companies...... as good and stimulating, but has on the other hand sides to it which can cause frustration and stress. The implication of organisational characteristics of the knowledge-intensive companies studied is a transfer of the responsibility for ones own working-life. Consequently, issues are dealt...... with informally, individu-ally and incidentally. It is only when problems exist that enhanced support is offered in order to help an employee to cope or recover. As most workplace initiatives work at this tertiary level, the sources of work-related and organiza-tional stress are not reduced or eliminated...

  2. Knowledge work and work-related stress

    OpenAIRE

    Ipsen, Christine

    2006-01-01

    Work-related stress is an increasing problem in Europe. Earlier studies have stated that knowledge-work comprises working conditions which reflect a good psychosocial environment. Recent Danish studies, however, point at stress being an increasing problem in knowledge-intensive companies. These companies employ highly educated and com-petent people who apply their personal knowledge to generate new knowledge in close relationship with both custom-ers and colleagues. The employees are self-man...

  3. How the Heart Works

    Science.gov (United States)

    ... Works Explore How the Heart Works What Is... Anatomy Contraction Circulation Electrical System Heart Disease Related Topics Arrhythmia Congenital Heart Defects Coronary Heart Disease Heart Valve Disease How the Lungs Work Send a link to NHLBI to someone ...

  4. Work and Non-Work: Institutional Perspectives.

    Science.gov (United States)

    Dubin, Robert

    What impact do the institutions of society have on work? To answer this question a distinction was drawn between two models of social institutions, contrasting their characteristics and pointing out the implication of each model for an understanding of work and the production institution. It was concluded that the "multi-equal" model of social…

  5. Riding Third: Social Work in Ambulance Work

    Science.gov (United States)

    Campbell, Hilary; Rasmussen, Brian

    2012-01-01

    This research explored the possible role of social work alongside emergency ambulance services. An ethnographic study included semistructured interviews and direct observations collected over 300 hours while riding in ambulances in an urban setting. The data suggest that social work could play a role by providing needed psychosocial care during…

  6. Work organisation, technology and working conditions

    NARCIS (Netherlands)

    Dhondt, S.; Kraan, K.; Sloten, G. van

    2002-01-01

    The personal computer, computer networks and the Internet have brought the Union into the Information Age. These technological changes have inevitably led to changes in the work environment and the quality of working conditions. For the third time, the European Foundation for the Improvement of Livi

  7. Constant attention to work on work safety

    Energy Technology Data Exchange (ETDEWEB)

    Gurando, R.V.

    1982-01-01

    In order to improve responsibility of the workers for strict observance of the standards, rules and instruction for work safety, the Karlov NKGRE has introduced a number of indicators under socialist competition: lack of injuries, accidents, complications, fulfillment of organizational-technical measures of a comprehensive plan and collective contract, preventive maintenance schedule and instructions of the agencies of inspection and public inspectors. The organization of prevention of production injury is based on the principle ''for each object constant attention to work safety and supervisory monitoring.'' Monitoring of the condition of accident prevention is done by 69 public inspectors under the control of the commission of work safety made of 9 people. The work of the commission is done according to quarterly and annual plans. The commission reveals shortcomings, introduces specific suggestions, for example regarding reconstruction of the ventilation of the sharpener, the mechanism of pipe feed to the pipe cutting machine, etc. One of the main tasks of the commission is to participate in the rapid control of the condition of work safety at the work sites. For achievements in work to create good working and living conditions, the collective of the Karlov NKGRE was awarded certificates of the AUCCTU, the Ukrainian SSR Ministry of Geology and the USSR Ministry of Geology, as well as group and republic committees of the trade unions.

  8. Riding Third: Social Work in Ambulance Work

    Science.gov (United States)

    Campbell, Hilary; Rasmussen, Brian

    2012-01-01

    This research explored the possible role of social work alongside emergency ambulance services. An ethnographic study included semistructured interviews and direct observations collected over 300 hours while riding in ambulances in an urban setting. The data suggest that social work could play a role by providing needed psychosocial care during…

  9. Struggling at work

    DEFF Research Database (Denmark)

    Hjarsbech, Pernille U; Nielsen, Maj Britt D.; Andersen, Malene Friis

    2015-01-01

    who were in an on-going process that we conceptualised as struggling at work. Informants struggled with the negative experiences of work that led to emotional, cognitive and somatic symptoms. Relationships with supervisors and colleagues, work load and work pressure and their self-image as a good...... with problems at work. Methods: From a survey study on work and mental health in Denmark, we invited participants for in-depth interviews. Using grounded theory, we conducted 13 semi structured interviews with employees, at work, experiencing depressive symptoms. Findings: Work was pivotal for the informants...

  10. Patterns of work injuries

    DEFF Research Database (Denmark)

    Lander, Flemming; Nielsen, Kent Jacob; Rasmussen, Kurt;

    2014-01-01

    To compare work injuries treated in an emergency department (ED) and injuries reported to the Danish Working Environment Authority (DWEA).......To compare work injuries treated in an emergency department (ED) and injuries reported to the Danish Working Environment Authority (DWEA)....

  11. New ways to work.

    Science.gov (United States)

    2003-06-01

    Flexible working, work-life balance, family friendliness; all are now familiar terms in today's NHS, and employers, managers and leaders are expected to be forging ahead in improving the working lives for all staff. If you are looking for new ideas to help tackle the challenge, you should try the New Ways to Work website.

  12. CTOs at work

    CERN Document Server

    Donaldson, Scott; Donaldson, Gary

    2012-01-01

    Scott Donaldson, Stanley Siegel and Gary Donaldson interview many of the world's most influential chief technology officers in CTOs at Work, offering a brand-new companion volume to the highly acclaimed elite At Work books including Coders at Work, CIOS at Work and Venture Capitalists at Work. As the words "at work" suggest, the authors focus on how their interviewees tackle the day-to-day work of the CTO while revealing much more: how they got there, how they manage and allocate projects, and how they interact with business units and ensure that their companies take advantage of technologies,

  13. Evaluación de las áreas de ausencia de potencia, selectividad de marchas, solape entre marchas y eficiencia de la aceleración. // Evaluation of the non power areas, gears selectivity, overlap between gears and acceleration efficiency in vehicles.

    Directory of Open Access Journals (Sweden)

    V. Millo Carmenate

    2004-09-01

    Full Text Available Este artículo describe un método que permite cuantificar las áreas de ausencia de potencia, la selectividad de marchas, elsolape entre marchas y la eficiencia de la aceleración. Se realiza una evaluación en una muestra de vehículos y camionesde estos coeficientes y se incluye un análisis estadístico del comportamiento de dichos indicadores en el ámbito mundial.Palabras claves: Dinámica de vehículos, selección.______________________________________________________________________________Abstract.This article describes a method that allows to quantify the non power areas, gears selectivity, overlap between gears andacceleration efficiency by means of an evaluation in a sample of vehicles and trucks offering an statistics analysis of thebehaviour of the indicators worldwide.Key words: Vehicle dynamics, selection.

  14. The Ambiguity of Work

    DEFF Research Database (Denmark)

    Humle, Didde Maria

    2014-01-01

    drawing on the results of an ethnographic case study of a consultancy house; more specifically, it comprises an exploration of the narrative identity work of consultants as they perform work practice stories of self, work, and the organization negotiating why the work they do is both challenging...... contributes by showing that some of the elements perceived to make the work meaningful and rewarding are the same ones also described as potentially demanding and challenging. Furthermore, the article contributes by arguing that studying work practice stories as (ante)narrative identity work provides a rich......This article contributes to the current debate among organizational and work-life researchers on the double-sided nature of knowledge work, which offers great freedom and satisfaction on the one hand and the potential to be overly demanding and stressful on the other. This contribution involves...

  15. Predicting Sustainable Work Behavior

    DEFF Research Database (Denmark)

    Hald, Kim Sundtoft

    2013-01-01

    Sustainable work behavior is an important issue for operations managers – it has implications for most outcomes of OM. This research explores the antecedents of sustainable work behavior. It revisits and extends the sociotechnical model developed by Brown et al. (2000) on predicting safe behavior....... Employee characteristics and general attitudes towards safety and work condition are included in the extended model. A survey was handed out to 654 employees in Chinese factories. This research contributes by demonstrating how employee- characteristics and general attitudes towards safety and work...... condition influence their sustainable work behavior. A new definition of sustainable work behavior is proposed....

  16. Working during cancer treatment

    Science.gov (United States)

    ... medlineplus.gov/ency/patientinstructions/000834.htm Working during cancer treatment To use the sharing features on this page, ... JavaScript. Many people continue to work throughout their cancer treatment. Cancer, or the side effects of treatment, may ...

  17. Current Work Politics

    DEFF Research Database (Denmark)

    Hasle, Peter; Hvid, Helge

    2003-01-01

    A presentation of the development of the Danish work politics during the last decade, discussed in an international context.......A presentation of the development of the Danish work politics during the last decade, discussed in an international context....

  18. How the Ear Works

    Science.gov (United States)

    ... Find an ENT Doctor Near You How the Ear Works How the Ear Works Patient Health Information News media interested in ... public relations staff at newsroom@entnet.org . The ear has three main parts: the outer ear (including ...

  19. NCPC Commemorative Works Catalog

    Data.gov (United States)

    National Capital Planning Commission — The CWC is a complete list of Washington DC's commemorative works on federal land. Each record includes a work's title, location, a short description of its purpose,...

  20. Group Work Publication-1991.

    Science.gov (United States)

    Zimpfer, David G.

    1992-01-01

    Lists 21 new publications in group work, of which 9 are reviewed. Those discussed include publications on group counseling and psychotherapy, structured groups, support groups, psychodrama, and social group work. (Author/NB)

  1. The recognition of work

    OpenAIRE

    Nierling, Linda

    2007-01-01

    The following article argues that recognition structures in work relations differ significantly in the sphere of paid work in contrast to unpaid work in private spheres. According to the systematic approach on recognition of Axel Honneth three different levels of recognition are identified: the interpersonal recognition, organisational recognition and societal recognition. Based on this framework it can be stated that recognition structures in the sphere of paid work and in private spheres di...

  2. Work Coordination Engine

    Science.gov (United States)

    Zendejas, Silvino; Bui, Tung; Bui, Bach; Malhotra, Shantanu; Chen, Fannie; Kim, Rachel; Allen, Christopher; Luong, Ivy; Chang, George; Sadaqathulla, Syed

    2009-01-01

    The Work Coordination Engine (WCE) is a Java application integrated into the Service Management Database (SMDB), which coordinates the dispatching and monitoring of a work order system. WCE de-queues work orders from SMDB and orchestrates the dispatching of work to a registered set of software worker applications distributed over a set of local, or remote, heterogeneous computing systems. WCE monitors the execution of work orders once dispatched, and accepts the results of the work order by storing to the SMDB persistent store. The software leverages the use of a relational database, Java Messaging System (JMS), and Web Services using Simple Object Access Protocol (SOAP) technologies to implement an efficient work-order dispatching mechanism capable of coordinating the work of multiple computer servers on various platforms working concurrently on different, or similar, types of data or algorithmic processing. Existing (legacy) applications can be wrapped with a proxy object so that no changes to the application are needed to make them available for integration into the work order system as "workers." WCE automatically reschedules work orders that fail to be executed by one server to a different server if available. From initiation to completion, the system manages the execution state of work orders and workers via a well-defined set of events, states, and actions. It allows for configurable work-order execution timeouts by work-order type. This innovation eliminates a current processing bottleneck by providing a highly scalable, distributed work-order system used to quickly generate products needed by the Deep Space Network (DSN) to support space flight operations. WCE is driven by asynchronous messages delivered via JMS indicating the availability of new work or workers. It runs completely unattended in support of the lights-out operations concept in the DSN.

  3. Work-related stress

    OpenAIRE

    Houtman, I.L.D.

    2005-01-01

    Changes in the content and organisation of work in recent decades have resulted in an intensification of work, which is commonly regarded as a cause of stress. This report presents trends in the risks and consequences of work-related stress, and identifies how these can be prevented. The focus iswithin the European Working Conditions Observatory (EWCO) network of seven European countries in its initial phase: Denmark, Finland, France, Germany, the Netherlands, Spain and Sweden. In many countr...

  4. Working with Working Families. ERIC Digest.

    Science.gov (United States)

    King, Margaret

    This ERIC Digest offers tips for understanding the needs, concerns, and feelings of employed parents, and discusses ways child caregivers can involve working parents in their children's lives while the children are enrolled in child care facilities. Competition with the caregiver, guilt over leaving children in the care of others, and little time…

  5. Work Redesign that Works for Teachers

    Science.gov (United States)

    Mayrowetz, David; Smylie, Mark A.

    2004-01-01

    Over the past two decades, scholars and practitioners in a variety of industries have considered work redesign among a constellation of strategies to promote employee recruitment and retention, development, motivation, and performance. Although educational policymakers in the middle to late 1990s shifted their attention to standards, systemic…

  6. Does Leave Work?

    NARCIS (Netherlands)

    Heleen van Luijn; Saskia Keuzenkamp

    2004-01-01

    More and more people have to combine work and care responsibilities, and work part-time or use daycare and after-school care facilities to help them do so. The Work and Care Act, which came into force on 1 December 2001, combined all the existing schemes - such as parental and maternity leave -

  7. Authenticity at work

    NARCIS (Netherlands)

    van den Bosch, Ralph

    2016-01-01

    Authenticity at work, loosely defined as the degree to which an individual stays true to their core self, has impact on workers in the workplace. This thesis shows that authenticity at work can be measured with a reliable and valid instrument: the IAM Work. Furthermore, results of this thesis show t

  8. Motivational Orientations in Work

    Science.gov (United States)

    Murtonen, Mari; Olkinuora, Erkki; Palonen, Tuire; Hakkarainen, Kai; Lehtinen, Erno

    2008-01-01

    The rapid development in working life during recent decades has changed the structures of work organisations and expectations of employees' work. Differing forms of professional employment and different types of organisational environments likely promote different types of motivational patterns in workers. The aim of this study was to apply a…

  9. Performative Work in Tourism

    DEFF Research Database (Denmark)

    Bærenholdt, Jørgen Ole; Jensen, Hanne Louise

    2009-01-01

    performative work. For many workers, the performative aspect has contributed to their personal development, especially where self-control at work contributes to enhancing self-esteem. Second, performative work is also often vulnerable, involving various emotional strategies to cope with its challenges. While...

  10. Worth the work

    NARCIS (Netherlands)

    Mariëlle Cloïn

    2010-01-01

    Original title: Het werken waard. Why do lower educated women work outside the home less often than higher educated women? And why are lower educated women overrepresented in the smallest part-time jobs? Is it not financially worthwhile for lower educated women to work or to work a lot of

  11. Authenticity at work

    NARCIS (Netherlands)

    van den Bosch, Ralph

    2016-01-01

    Authenticity at work, loosely defined as the degree to which an individual stays true to their core self, has impact on workers in the workplace. This thesis shows that authenticity at work can be measured with a reliable and valid instrument: the IAM Work. Furthermore, results of this thesis show

  12. Motivational Orientations in Work

    Science.gov (United States)

    Murtonen, Mari; Olkinuora, Erkki; Palonen, Tuire; Hakkarainen, Kai; Lehtinen, Erno

    2008-01-01

    The rapid development in working life during recent decades has changed the structures of work organisations and expectations of employees' work. Differing forms of professional employment and different types of organisational environments likely promote different types of motivational patterns in workers. The aim of this study was to apply a…

  13. Work-related stress

    NARCIS (Netherlands)

    Houtman, I.L.D.

    2005-01-01

    Changes in the content and organisation of work in recent decades have resulted in an intensification of work, which is commonly regarded as a cause of stress. This report presents trends in the risks and consequences of work-related stress, and identifies how these can be prevented. The focus

  14. Live to work or love to work: work craving and work engagement.

    Directory of Open Access Journals (Sweden)

    Kamila Wojdylo

    Full Text Available OBJECTIVE: According to the theory of work craving, a workaholic has a craving for self-worth compensatory incentives and an expectation of relief from negative affect experienced through neurotic perfectionism and an obsessive-compulsive style of working. Research has shown that workaholism and work engagement should be considered as two distinct work styles with different health consequences. However, the mechanisms underlying the adoption of these work styles have been neglected. The present study proposes that work craving and work engagement are differentially associated with self-regulatory competencies and health. In particular, we expected that the working styles mediate the relationships between emotional self-regulation and health. METHODS: In the cross-sectional study, 469 teachers from German schools completed online administered questionnaires. By means of structural equation modeling, we tested two indirect paths: a from self-relaxation deficits via work craving to poor health and b from self-motivation competencies via work engagement to good health. RESULTS: As expected, we found evidence that a the negative relationship of self-relaxation deficits on health was partially mediated by work craving and b the positive relationship of self-motivation competencies on health was partially mediated by work engagement. CONCLUSIONS: The present study emphasizes the importance of self-regulation competencies for healthy or unhealthy work styles. Whereas work craving was associated with a low ability to down-regulate negative emotions and poor health, work engagement was associated with a high ability to up-regulate positive emotions and good health.

  15. Stress at Work Place

    OpenAIRE

    Mohammad A. Shahrour

    2010-01-01

    One of hardest forms of stresses to avoid is that work place or job stress Job stress refers to stress experienced by an individual at or because of issues at their work place The term work related stress has many meanings and it causes different levels of anxiety. Not all challenges at work can be called stress as some of these challenges drive employees upward, and empower them to learn new skills or push them to work harder to achieve a certain goal. So, this type of challenges cannot be c...

  16. The Ambiguity of Work

    DEFF Research Database (Denmark)

    Humle, Didde Maria

    2014-01-01

    This article contributes to the current debate among organizational and work-life researchers on the double-sided nature of knowledge work, which offers great freedom and satisfaction on the one hand and the potential to be overly demanding and stressful on the other. This contribution involves...... drawing on the results of an ethnographic case study of a consultancy house; more specifically, it comprises an exploration of the narrative identity work of consultants as they perform work practice stories of self, work, and the organization negotiating why the work they do is both challenging...... and rewarding. The type of knowledge work explored is characterized by its immaterial nature in the sense that the primary input is the competences, knowledge, and commitment of the consultants and the output is the joy, success, and satisfaction of candidates, clients, and collaborators. The article...

  17. The Ambiguity of work

    DEFF Research Database (Denmark)

    Humle, Didde Maria

    2014-01-01

    This article contributes to the current debate among organizational and work-life researchers on the double-sided nature of knowledge work, which offers great freedom and satisfaction on the one hand and the potential to be overly demanding and stressful on the other. This contribution involves...... drawing on the results of an ethnographic case study of a consultancy house; more spe- cifically, it comprises an exploration of the narrative identity work of consultants as they perform work practice stories of self, work, and the organization negotiating why the work they do is both challenging...... and rewarding. The type of knowledge work explored is characterized by its immaterial nature in the sense that the primary input is the competences, knowledge, and commitment of the consultants and the output is the joy, success, and satisfaction of candidates, clients, and collaborators. The article...

  18. It works – I know it works

    Directory of Open Access Journals (Sweden)

    Lars Kolind

    2015-06-01

    Full Text Available Valve is the prototype knowledge-based company because its organizational design fosters creativity, action, fast learning, and high productivity. I experienced a similar organization about 15 years before Valve, at Oticon, the Danish hearing aid manufacturer which dropped bosses, titles, departments, and most of the bureaucracy and paperwork that slows down work. As in Valve, the value-creation was spectacular: 60% growth in market value each year for a ten-year period.

  19. IPD-Work consortium

    DEFF Research Database (Denmark)

    Kivimäki, Mika; Singh-Manoux, Archana; Virtanen, Marianna

    2015-01-01

    to advance research on associations between work-related psychosocial risk factors and health; (ii) demonstrate as unfounded Choi et al's assertion that IPD-Work has underestimated associations between job strain and health endpoints; these include the dichotomous measurement of job strain, potential......Established in 2008 and comprising over 60 researchers, the IPD-Work (individual-participant data meta-analysis in working populations) consortium is a collaborative research project that uses pre-defined meta-analyses of individual-participant data from multiple cohort studies representing a range......-Work's findings have also generated disagreement as they challenge the importance of job strain as a major target for coronary heart disease (CHD) prevention, this is reflected in the critical discussion paper by Choi et al (1). In this invited reply to Choi et al, we aim to (i) describe how IPD-Work seeks...

  20. Unhappy expatriates at work

    DEFF Research Database (Denmark)

    Selmer, Jan; Lauring, Jakob

    2014-01-01

    have a substantial effect on performing certain work tasks which is the reason for the foreign assignment. Based on the survey responses of 428 expatriate academics, results of this exploratory study show that unhappiness conceptualised as Subjective Ill-Being (SIB) had a strong negative association......While some expatriates could feel deeply unhappy trying to deal with the challenges of living and working abroad, few rigorous academic studies have presented evidence of the association between unhappiness among expatriates and their work outcomes. That is surprising since unhappiness could well...... with work adjustment, work performance, work effectiveness, and job satisfaction as well as a strong positive relationship with time to proficiency. These results are discussed in detail and their implications are drawn....

  1. Work Practice Characteristics

    DEFF Research Database (Denmark)

    Pors, Jens Kaaber; Simonsen, Jesper

    2003-01-01

    and work practice. To understand these issues a framework of characteristics is identified and termed work practice characteristics to describe important aspects of the hybrid configuration of groupware and situated work practices. Drawing on concepts and work practice studies in the field of computer......Integrating groupware in work practices poses a range of interrelated problems comprising organisational and technological issues. These are complex issues, since they derive from the combined influence of a range of heterogeneous elements and emergent phenomena in the intersection of groupware...... supported cooperative work (CSCW) the paper argues that the interrelations of heterogeneous elements and emergent phenomena arising from the integration of groupware in practice should be made visible from a perspective encompassing both the social and the technical. Two cases from an empirical...

  2. Work Practice Characteristics

    DEFF Research Database (Denmark)

    Pors, Jens Kaaber; Simonsen, Jesper

    2003-01-01

    and work practice. To understand these issues a framework of characteristics is identified and termed work practice characteristics to describe important aspects of the hybrid configuration of groupware and situated work practices. Drawing on concepts and work practice studies in the field of computer......Integrating groupware in work practices poses a range of interrelated problems comprising organisational and technological issues. These are complex issues, since they derive from the combined influence of a range of heterogeneous elements and emergent phenomena in the intersection of groupware...... supported cooperative work (CSCW) the paper argues that the interrelations of heterogeneous elements and emergent phenomena arising from the integration of groupware in practice should be made visible from a perspective encompassing both the social and the technical. Two cases from an empirical...

  3. Working around technologies

    DEFF Research Database (Denmark)

    Dupret, Katia

    2017-01-01

    in Denmark. The aim and contribution of the study is twofold. First, it attempts to revitalise the discussion on technology workaround strategies as responsible professionalism. Second, it will direct attention to and contribute to an understanding of how the normativity embedded in technological development......This study discusses how professionalism and work ethics influence how health care professionals work around new technologies. When people avoid using technologies, they are not necessarily ceasing to engage in their work activities. The workaround strategies presented here are rather practical...... expressions of professionals’ active encounter with the complexity of work situations, and can therefore be important signs of professional ethical judgement. Drawing on science and technology studies and the concept of invisible work, the study discusses workaround situations that arise in health care work...

  4. China's Work Safety Report

    Institute of Scientific and Technical Information of China (English)

    Liang Jiakun

    2005-01-01

    @@ General Situation of China's Work Safety in 2004 In 2004, the national work safety situation remained stable as a whole and gained momentum to improve. The totality of accidents held the line and began to drop. The safety conditions in industrial,mining, and commercial/trading enterprises improved. Progress was made in ensuring work safety in the relevant industries and fields. The safety situation in most provinces (autonomous regions, municipalities directly under the Central Government) kept stable.

  5. Learning, Working and Living

    DEFF Research Database (Denmark)

    Andersen, Vibeke

    In the recent years, learning and knowing have emerged as key issues in understanding work organizations. Identifying ways in which learning can be supported in the workplace has been a long standing concern for organization studies and education. The book presents new ways of thinking about...... learning at work. Moreover it paves the way for the repositioning of learning, working and living in the context of organizationel complexity....

  6. Tribology in Metal Working

    OpenAIRE

    Nilsson, Maria

    2012-01-01

    This thesis focuses on the tribological performance of tool surfaces in two steel working operations, namely wire drawing and hot rolling. In all forming operations dimensions and surface finish of the products are of utmost importance. Forming basically includes three parts – forming conditions excluded – that may be changed; work material, tool and (possibly) lubricant. In the interface between work material and tool, the conditions are very aggressive with – generally or locally – high tem...

  7. Stress at Work Place

    Directory of Open Access Journals (Sweden)

    Mohammad A. Shahrour

    2010-06-01

    Full Text Available One of hardest forms of stresses to avoid is that work place or job stress Job stress refers to stress experienced by an individual at or because of issues at their work place The term work related stress has many meanings and it causes different levels of anxiety. Not all challenges at work can be called stress as some of these challenges drive employees upward, and empower them to learn new skills or push them to work harder to achieve a certain goal. So, this type of challenges cannot be considered as true stress True job stress is a condition that not only destroys employee desire to work, but also his or her energy, getting them to suffer both emotionally and physically. Warning signs of stress at work when people feel overwhelmed they feel lacking confidence, become irritated or withdrawn, less productive, less effective and their work less rewarding if these warning passed unnoticed then signs and symptoms of stress will appear. Signs and Symptoms of Excessive 4. Personal conflicts with supervisors Workplace Stress or other employees 5. Feeling insecure at work ( 1. Feeling anxious, agitated, constantly threatened with criticism depressed or apathetic or job loss 2. Loss of interest at work 6. Discrimination ( race, sex or age 3. Difficulty in attention and 7. Discouragement (to feel concentration incompetent and worthless 4. Insomnia and sleep problems 8. Sexual harassment 5. Feeling fatigue 9. Lack of flexibility in work hours 6. Muscle tension and headaches 10. Poor work environment 7. Stomach problems or different 11. Developments in technology body aches 8. Social withdrawal How to Deal with Work Place Stress 9. Loss of sex drive 10. Using alcohol or drugs to cope Fortunately, there is a lot that you can do to manage and reduce stress at work. Different Causes of Job Stress General Guidelines: 1. Poor work conditions and having no say over such conditions A. Taking responsibility for 2. Unreasonable demands from improving your

  8. Meaning in Work Life

    DEFF Research Database (Denmark)

    Ravn, Ib

    meaningful is still lacking (Harpaz & Fu, 2002), as are definitions of key terms. Here, I define meaning as the experience that something fits into a wider context or coheres within a larger whole.     I conceptualize meaning in work life as deriving from four factors, each of which helps us contribute...... to something larger than ourselves (Seligman, 2002) through our work. Thus, a person experiences meaning in work life when she... A. is able to use her signature strengths at work (Peterson and Seligman, 2004), B. makes an important contribution to the workplace (Drucker, 1999), C. participates in a productive...

  9. Social Work Research

    DEFF Research Database (Denmark)

    Social work research has gathered a greater transparency and clarity of identity in North American and parts of Europe. Furthermore, the rapid emergence of social work research in other European countries, China, India, Japan and elsewhere in Asia and Pacific Rim countries, and gradually in South...... understanding of the different aspects involved in the research. Volume One: Historical Trajectories, Purposes and Key Concepts Volume Two: Key Decisions about Research Strategy Volume Three: The Practice of Social Work Research Volume Four: The Contexts of Social Work Research...

  10. 77 FR 38742 - Non-Power Reactor License Renewal

    Science.gov (United States)

    2012-06-29

    ... Docket ID NRC-2011-0087. NRC's Agencywide Documents Access and Management System (ADAMS): You may access publicly available documents online in the NRC Library at http://www.nrc.gov/reading-rm/adams.html . To... solutions, integration with the NRC's strategic goals, and related technical and ] regulatory clarity...

  11. Aspects of quantum work.

    Science.gov (United States)

    Talkner, Peter; Hänggi, Peter

    2016-02-01

    Various approaches of defining and determining work performed on a quantum system are compared. Any operational definition of work, however, must allow for two facts: first, that work characterizes a process rather than an instantaneous state of a system and, second, that quantum systems are sensitive to the interactions with a measurement apparatus. We compare different measurement scenarios on the basis of the resulting postmeasurement states and the according probabilities for finding a particular work value. In particular, we analyze a recently proposed work meter for the case of a Gaussian pointer state and compare it with the results obtained by two projective and, alternatively, two Gaussian measurements. In the limit of a strong effective measurement strength the work distribution of projective two energy measurements can be recovered. In the opposite limit the average of work becomes independent of any measurement. Yet the fluctuations about this value diverge. The performance of the work meter is illustrated by the example of a spin in a suddenly changing magnetic field.

  12. Fragmented Work Stories

    DEFF Research Database (Denmark)

    Humle, Didde Maria; Reff Pedersen, Anne

    2015-01-01

    by exploring how different types of fragmentation create meanings. This is done by studying the work stories of job and personnel consultants and by drawing on the results of a narrative, ethnographic study of a consultancy. The analysis demonstrates how work stories are social practices negotiated, retold...

  13. Human Work Interaction Design

    DEFF Research Database (Denmark)

    2015-01-01

    In this paper, we review research in the emerging practice and research field of Human Work Interaction Design (HWID). We present a HWID frame-work, and a sample of 54 papers from workshops, conferences and journals from the period 2009-2014. We group the papers into six topical groups, and then ...

  14. Working with RNA

    DEFF Research Database (Denmark)

    Nielsen, Henrik

    2011-01-01

    Working with RNA is not a special discipline in molecular biology. However, RNA is chemically and structurally different from DNA and a few simple work rules have to be implemented to maintain the integrity of the RNA. Alkaline pH, high temperatures, and heavy metal ions should be avoided when po...

  15. COLD-WORKED HARDWARE

    Directory of Open Access Journals (Sweden)

    N. M. Strizhak

    2007-01-01

    Full Text Available The different types of cold-worked accessory are examined in the article. The necessity of development of such type of accessory in the Republic of Belarus due to requirements of market is shown. High emphasis is placed on the methods of increase of plasticity of cold-worked accessory from usual mill of RUP and CIS countries.

  16. Successful aging at work

    NARCIS (Netherlands)

    Zacher, Hannes

    2015-01-01

    The expression successful aging at work and related terms such as active, healthy, and productive aging at work are frequently used by organizational researchers and practitioners. However, there are no concrete definitions or theoretical frameworks that explain their meaning, assumptions, and

  17. European works councils

    DEFF Research Database (Denmark)

    Knudsen, Herman Lyhne

    2003-01-01

    The theme adressed by this paper is the opportunities for European Works Councils (EWCs) of gaining influence on corporate decisions in multinational companies.......The theme adressed by this paper is the opportunities for European Works Councils (EWCs) of gaining influence on corporate decisions in multinational companies....

  18. Work and Rights.

    Science.gov (United States)

    Sen, Amartya

    2000-01-01

    Examines four conceptual features of decent work essential to its achievement in a context of globalization: (1) an inclusive approach, (2) rights-based thinking, (3) placing work within a broad economic, political, and social context, and (4) extension of thinking from international to truly global. Contains 17 references. (JOW)

  19. Coordinating Work with Groupware

    DEFF Research Database (Denmark)

    Pors, Jens Kaaber; Simonsen, Jesper

    2003-01-01

    One important goal of employing groupware is to make possible complex collaboration between geographically distributed groups. This requires a dual transformation of both technology and work practice. The challenge is to re­duce the complexity of the coordination work by successfully inte­grating...

  20. Making Science Teams Work

    Science.gov (United States)

    Miller, Roxanne Greitz

    2004-01-01

    Science teachers, likely have more experience with students working together than teachers in any other subject area due to teaming students for hands-on activities. While the importance of teamwork is emphasized in the National Science Education Standards, getting teams to actually work-meaning getting students to share equally in the academic…

  1. CORRECTING WRITTEN WORK

    Institute of Scientific and Technical Information of China (English)

    1994-01-01

    Introduction During the teaching and learning process, teachers often check how much students have understood through written assignments. In this article I’d like to describe one method of correcting students’ written work by using a variety of symbols to indicate where students have gone wrong, then asking students to correct their work themselves.

  2. European works councils

    DEFF Research Database (Denmark)

    Knudsen, Herman Lyhne

    2004-01-01

    The theme addressed by this artcle is the opportunities for European Works Councils of gaining influence on corporate decisions in multinational companies.......The theme addressed by this artcle is the opportunities for European Works Councils of gaining influence on corporate decisions in multinational companies....

  3. Work injuries and disability

    DEFF Research Database (Denmark)

    Tüchsen, Finn; Christensen, Karl Bang; Feveile, Helene

    2009-01-01

    PROBLEM: This study estimated the hazard ratio for disability pension retirement (DPR) for persons who have experienced a work injury causing absence lasting at least one day after the accidental injury occurred and to estimate the fraction of DPR attributable to work injuries. METHODS: A total...

  4. Working in virtual knowledge

    DEFF Research Database (Denmark)

    Antonijević, Smiljana; Dormans, Stefan; Wyatt, Sally

    2012-01-01

    Scholarly work, especially in the humanities and social sciences, is often seen as solitary. The lone, creative individual, reading and writing while sitting on a chair and gazing out a window, is a powerful image even as it draws attention to the very unglamorous nature of such work. This image ...

  5. Group Work. Research Brief

    Science.gov (United States)

    Walker, Karen

    2010-01-01

    According to Johnson and Johnson, group work helps increase student retention and satisfaction, develops strong oral communication and social skills, as well as higher self-esteem (University of Minnesota, n.d.). Group work, when planned and implemented deliberately and thoughtfully helps students develop cognitive and leadership skills as well as…

  6. Cloisonne Works of Beijing

    Institute of Scientific and Technical Information of China (English)

    1995-01-01

    CLOISONNE, or enamel work on red copper, is a traditional handicraft in Beijing. It has a history of more than 500 years in China. Cloisonne requires precise and careful work. The body is made of red copper, tapped into shape by hand. Then thin copper wires are twisted into the desired shapes and

  7. Abstract: Body Work

    DEFF Research Database (Denmark)

    Otto, Lene

    2012-01-01

    in which body work features in medical, therapeutic, and care fields as well as in different sectors of work outside health and social care. The aim of such bodywork can be medical, therapeutic, pleasurable, aesthetic, erotic, hygienic, or symbolic. It encompasses a range of practitioners: surgeons...

  8. Social Work and Science

    Science.gov (United States)

    Gehlert, Sarah

    2016-01-01

    Interest has grown in the past few years about the place of social work in science. Questions remain, such as whether social work should be considered a science, and if so, where it fits into the constellation of sciences. This article attempts to shed light on these questions. After briefly considering past and present constructions of science…

  9. Work Values across Generations

    Science.gov (United States)

    Hansen, Jo-Ida C.; Leuty, Melanie E.

    2012-01-01

    Mainstream publication discussions of differences in generational cohorts in the workplace suggest that individuals of more recent generations, such as Generation X and Y, have different work values than do individuals of the Silent and Baby Boom generations. Although extant research suggests that age may influence work values, few of the…

  10. Social Work and Science

    Science.gov (United States)

    Gehlert, Sarah

    2016-01-01

    Interest has grown in the past few years about the place of social work in science. Questions remain, such as whether social work should be considered a science, and if so, where it fits into the constellation of sciences. This article attempts to shed light on these questions. After briefly considering past and present constructions of science…

  11. Too old to work?

    Directory of Open Access Journals (Sweden)

    Per Erik Solem

    2009-10-01

    Full Text Available The article reviews Norwegian and international research on aging and work; causes of early exit,attitudes towards older workers, aging and work performance, and trends of changes in working life.Workers seem to have become too old to work at increasingly younger ages. Recent and futuredemographic changes call for initiatives to keep older workers in the work force. In many countriesfavourable early retirement arrangements are reversed in order to stop pulling older workers prematurelyout of work. The other main group of factors causing early exit, the push factors in the work environment,have until recently attracted less attention. Even if older workers in general seem to be no less effectivethan younger workers, employers prefer to recruit younger workers, and to dismiss older workers whenreducing the staff. However, employers’ cognitions of older workes’ performance is quite nuanced. Thereseems to be an emotional ambivalence where negative feelings are less openly expressed, still they seemto have a strong influence on decisions. Ways of influencing attitudes towards older workers arediscussed. Companies creating working conditions to stimulate, include and motivate middle-aged andolder workers may get an advantage in the market. This may even benefit workers of all ages.

  12. Technology of social work

    OpenAIRE

    2008-01-01

    Educational manual contains the basis of the lecture course by discipline «Technology of social work» for students of specialty «Social work», plans and guidelines for practical exercises, control questions and bibliography to each topic.

  13. Stay Safe at Work

    Science.gov (United States)

    ... common type of workplace injury. You are at risk of getting hurt at work if you: Lift or carry heavy objects. This ... tips: Sit or stand up straight while you work. If you sit, adjust the chair or desk to your height. If you use tools or equipment, put them ...

  14. European works councils

    DEFF Research Database (Denmark)

    Knudsen, Herman Lyhne

    2003-01-01

    The theme adressed by this paper is the opportunities for European Works Councils (EWCs) of gaining influence on corporate decisions in multinational companies.......The theme adressed by this paper is the opportunities for European Works Councils (EWCs) of gaining influence on corporate decisions in multinational companies....

  15. European works councils

    DEFF Research Database (Denmark)

    Knudsen, Herman Lyhne

    2004-01-01

    The theme addressed by this artcle is the opportunities for European Works Councils of gaining influence on corporate decisions in multinational companies.......The theme addressed by this artcle is the opportunities for European Works Councils of gaining influence on corporate decisions in multinational companies....

  16. Work Values across Generations

    Science.gov (United States)

    Hansen, Jo-Ida C.; Leuty, Melanie E.

    2012-01-01

    Mainstream publication discussions of differences in generational cohorts in the workplace suggest that individuals of more recent generations, such as Generation X and Y, have different work values than do individuals of the Silent and Baby Boom generations. Although extant research suggests that age may influence work values, few of the…

  17. Human Work Interaction Design

    DEFF Research Database (Denmark)

    Lopes, Arminda; Ørngreen, Rikke

    This book constitutes the thoroughly refereed post-conference proceedings of the Third IFIP WG 13.6 Working Conference on Human Work Interaction Design, HWID 2012, held in Copenhagen, Denmark, in December 2012. The 16 revised papers presented were carefully selected for inclusion in this volume...

  18. Mothers, work and childcare

    NARCIS (Netherlands)

    Ingrid Ooms; Evelien Eggink; Edwin van Gameren

    2007-01-01

    Original title: Moeders, werk en kinderopvang in model. The government wants women to go out to work more. The choices made by women between working and looking after children are accordingly receiving a great deal of attention. This report describes which factors influence these choices by mothers

  19. Negotiating work identity

    Directory of Open Access Journals (Sweden)

    Tamsen Saayman

    2011-03-01

    Full Text Available Orientation: The study explored the dynamics of work identity negotiation and construction.Research purpose: The aim of the study was to investigate identity tensions and demands that mobilise identity work in the work environment.Motivation for the study: The study hoped to improve the understanding of the dynamics of identity construction and negotiation.Research design, approach and method: Using grounded theory methodology in the context of qualitative field research, the researchers conducted two unstructured interviews with 28 employees of a South African manufacturing company.Main findings: The five primary dimensions the data yielded were personal identity, individual agency, social identity, social practice and job.Practical/managerial implications: This study has implications for organisations that want to improve productivity through understanding work identity.Contribution/value-add: The article presents a conceptual model of the demands and tensions that influence work identity.

  20. Distributed Project Work

    DEFF Research Database (Denmark)

    Borch, Ole; Kirkegaard, B.; Knudsen, Morten

    1998-01-01

    Project work has been used for many years at Aalborg University to improve learning of theory and methods given in courses. In a closed environment where the students are forming a group in a single room, the interaction behaviour is more or less given from the natural life. Group work...... in a distributed fashion over the Internet needs more attention to the interaction protocol since the physical group room is not existing. The purpose in this paper is to develop a method for online project work by using the product: Basic Support for Cooperative Work (BSCV). An analysis of a well-proven protocol...... to be very precises and with success used on the second test group. Distributed project work is coming pretty soon and with little improvement in server tools, projects in different topics with a large and inhomogeneous profile of users are realistic....

  1. Innovative Work Behavior

    DEFF Research Database (Denmark)

    Pihl-Thingvad, Signe; Klausen, Kurt Klaudi

    work behaviour of the employees in a particular empirical setting. Innovative work behaviour has become an important concept in the literature on innovation. Theories on managing change and innovation in public service organizations would suggest that managers have several possibilities when ensuring...... the implementation of innovation. There is, however, still a gap (both empirical and theoretical) in the literature on how managers can contribute to and strengthen the employees’ innovative work behaviour in public service organizations. Therefore, we focus on the following research questions. Which management...... strategies are public managers using in order to create more innovative work behaviour? How do public managers create an innovative climate in the organization which affects the innovative work behaviour positively? In this paper we examine the implementation of innovation in a large Danish municipality...

  2. Ubiquitous Working Environments

    Science.gov (United States)

    Jansson, Carl Gustaf

    This chapter presents the Ubiquitous Working Environments, a vision for the work environments of the future and how this vision is manifested in current experimental environments and projects at KTH. Building upon the Ubiquitous Computing paradigm, our research targets environments, which support collaborating mobile workers in a seamless way, providing work support anywhere and anytime. In our design work so far, we have been particularly interested in the following three design aspects: First, context aware, proactive, and adaptive services; second, ad hoc configuration and synchronization of available resources, including both devices and services; third, new ways of sharing and using resources in a work environment. The systems we design comprise both devices, services, and their interfaces.

  3. Working in virtual knowledge

    DEFF Research Database (Denmark)

    Antonijević, Smiljana; Dormans, Stefan; Wyatt, Sally

    2012-01-01

    Scholarly work, especially in the humanities and social sciences, is often seen as solitary. The lone, creative individual, reading and writing while sitting on a chair and gazing out a window, is a powerful image even as it draws attention to the very unglamorous nature of such work. This image...... possibilities for augmenting or disrupting such collaborative work, by shifting the boundaries between visible and invisible tasks, influencing the division of labor within teams, as well as by bringing to light various affective underpinnings of scholarly practice. In this chapter, we focus on such affective...... of routine, often rather lonely activity contrasts sharply with the much more exciting one of teams of scientists working together in a laboratory, collecting samples, analyzing data and sharing ideas. But the reality of scholarly work in the humanities and social sciences has always been otherwise. Scholars...

  4. Making motherhood work

    Directory of Open Access Journals (Sweden)

    Rachel Thomson

    2011-07-01

    Full Text Available Motherhood can be a critical moment in the making of gendered biographies, and in the negotiation of a gendered division of labour within a household. This paper draws on the 'Making of Modern Motherhoods' study, which combined interviews with a diverse group of expectant first time mothers and family case studies in order to build an intergenerational and longitudinal perspective on contemporary mothering situations within the UK. In this paper, the category 'work' is used as a lens through which to encounter new motherhood. After contextualising working motherhood in relation to a sociological literature the paper draws on interviews undertaken with women towards the end of their pregnancy with their first child to reveal something of the emergent collision of working and maternal identities, women's experiences of being pregnant at work including the anticipation and managing of maternity leave. The second part presents a case study, which animates the personal drama involved in reconciling working and maternal commitments, tracing how a woman's feelings about work change over time in negotiation with partner, family and the market. As Sue Sharpe observed in her 1984 book on working mothers, 'full-time mothering has never been accessible to all women in the same way at the same time' (1984: 22. Social class, locality and migration shape a range of cultures of mothering within which work features very differently. Divisions exist between women who share a generational location as well as between women of different generations. This complexity is revealed through a juxtaposition of the voices of mothers and grandmothers, which show how work may both, divide and unite women in the project of motherhood.

  5. Hospital nurses' work motivation.

    Science.gov (United States)

    Toode, Kristi; Routasalo, Pirkko; Helminen, Mika; Suominen, Tarja

    2015-06-01

    The knowledge surrounding nurses' work motivation is currently insufficient, and previous studies have rarely taken into account the role of many influential background factors. This study investigates the motivation of Estonian nurses in hospitals, and how individual and organisational background factors influence their motivation to work. The study is quantitative and cross-sectional. An electronically self-reported questionnaire was used for data collection. The sample comprised of 201 Registered Nurses working in various hospital settings in Estonia. Data were analysed using descriptive statistics, two-sample Wilcoxon rank-sum (Mann-Whitney) test, Kruskal-Wallis equality-of-populations rank test and Spearman's correlation. Both extrinsic and intrinsic motivations were noted among hospital nurses. Nurses were moderately externally motivated (M = 3.63, SD = 0.89) and intrinsically strongly motivated (M = 4.98, SD = 1.03). A nurses' age and the duration of service were positively correlated with one particular area of extrinsic work motivation, namely introjected regulation (p extrinsic motivation (p = 0.016) and intrinsic work motivation (p = 0.004). The findings expand current knowledge of nurses' work motivation by describing the amount and orientation of work motivation among hospital nurses and highlighting background factors which should be taken into account in order to sustain and increase their intrinsic work motivation. The instrument used in the study can be an effective tool for nurse managers to determine a nurse's reasons to work and to choose a proper motivational strategy. Further research and testing of the instrument in different countries and in different contexts of nursing is however required. © 2014 Nordic College of Caring Science.

  6. Progression in work readiness

    DEFF Research Database (Denmark)

    Jensen, Sophie Danneris

    2013-01-01

    This paper is based partly on literature concerning the construction of identities in social work settings (especially Juhila & Abrams 2011, Eskelinen & Olesen 2010) and partly on literature that addresses the dilemmas and challenges in providing evidence about the effectiveness of interventions...... in social work programs (amongst others Boaz & Blewett 2010 and Koivisto 2008). Initially there will be a short presentation of the research topic of my Ph.D. and the central research question related to the project. Following this is a methodological discussion in two levels - the first discussion...... be understood through short narratives about work identity....

  7. Work environment quality

    DEFF Research Database (Denmark)

    Knudsen, Herman; Busck, Ole Gunni; Lind, Jens

    2011-01-01

    The article explores how employee participation influences the quality of the work environment and workers’ well-being at 11 Danish workplaces from within six different industries. Both direct participation and representative forms of participation at the workplace level were studied. Statistical...... as well as qualitative comparative analyses reveal that work environment quality and high levels of participation go hand in hand. Within a typology of participation models the highest level of participation, including strong elements of collective participation, and also the best work environment......, measured as ‘psychosocial well-being’, were found at workplaces managed in accordance with democratic principles....

  8. My volunteer work

    Institute of Scientific and Technical Information of China (English)

    卫子辰

    2015-01-01

    <正>As we all know,being a volunteer can help us learn many things,such as new skills,staying active,improving our social skills,accumulating work experience,making new friends with those who have the same topic,helping us grow more rapidly...I can still recall the days when I worked as a volunteer in a hospital in my city.The unforgetable experience was not only a volunteer work,but also a small society to me.It was in the summer vocation after high school entrance examination,when I had nothing to do but to play computer

  9. Ethnography at work

    DEFF Research Database (Denmark)

    Moeran, Brian

    their understanding of their companies' organizational structures, strategies and daily work practices. Asking crucial questions about the role of the anthropologist in the field, "Ethnography at Work" introduces students to ways in which anthropologists study social systems in business....... that of a rival firm. "Ethnography at Work" follows the experiences of the author as a participant observer in the day-to-day running of a Japanese advertising agency. The book reveals the intricate behind-the-scenes planning, discussion, negotiations and strategies needed to ensure that the agency's presentation...

  10. Work environment quality

    DEFF Research Database (Denmark)

    Knudsen, Herman; Busck, Ole Gunni; Lind, Jens

    2011-01-01

    The article explores how employee participation influences the quality of the work environment and workers’ well-being at 11 Danish workplaces from within six different industries. Both direct participation and representative forms of participation at the workplace level were studied. Statistical...... as well as qualitative comparative analyses reveal that work environment quality and high levels of participation go hand in hand. Within a typology of participation models the highest level of participation, including strong elements of collective participation, and also the best work environment...

  11. 杨昌济教育思想对提升高校辅导员非权力性影响力的借鉴%Reference of Yang Chang-ji's education thought on non-power influence of university counselors

    Institute of Scientific and Technical Information of China (English)

    史璐璐

    2015-01-01

    杨昌济教育思想以德育为中心、注重实践,是杨先生贯通古今、融汇中西、理论与实践相结合的智慧结晶,是教学相长、与时俱进的科学教育体系.在坚持科学发展观的今天,高校学生思想教育工作者学习借鉴杨昌济先生教育思想,有利于提升自身非权力性影响力、完成立德树人这一根本教育任务.%Yang Chang-ji education thought moral education as the center, pay attention to practice, Mr Yang is well versed in ancient and modern, together, the combination of theory and practice of Chinese and western wisdom crystallization, is the science of teaching is learning, advancing with The Times education system. In today's adhere to the scientific outlook on development, college students' ideological education worker to learn from Mr Yang Chang-ji education ideas, to improve their own non-power influence, complete fundamental education task.

  12. Applications of High-Nitrogen Energetics in Pyrotechnics: Development of Perchlorate-Free Red Star M126A1 Hand-Held Signal Formulations with Superior Luminous Intensities and Burn Times

    Science.gov (United States)

    2011-03-25

    modeling is not a useful tool in determining the toxic nature of high nitrogen salts such as bis-tetrazolate 1. Therefore, no data on the toxicology of...nitrogen compounds by per- forming Ames mutagenicity tests and in vitro tests to measure acute toxicity. The use of high-nitrogen compounds for energetic... PVC were purchased from Hummel Croton. Laminac 4116 was purchased from Ash- land Chemical, Inc. Lupersol was purchased from Norac. Epon 813 was

  13. 一种基于GIS的手持式井下人员搜救仪%A Hand-held Underground Personal Search and Rescue Device Based on GIS

    Institute of Scientific and Technical Information of China (English)

    刘鹏

    2014-01-01

    针对目前煤炭行业矿下事故多发,事故现场情况复杂,有线通信中断时难以保证救援,救援设备移动不方便,定位不精确等情况,设计了一种基于GIS定位显示的手持式井下人员搜救仪,搜救仪可将图像,定位,语音3种信息一同传到井上,在最短的时间内实现井上下的沟通,为营救工作争取时间.

  14. Avaliação da fatigabilidade em pacientes com esclerose múltipla através do dinamômetro manual Fatigability evaluation on multiple sclerosis patients by using a hand held dynamometer

    Directory of Open Access Journals (Sweden)

    Karina Pavan

    2006-06-01

    Full Text Available A fadiga é um dos mais freqüentes sintomas e incapacitantes na esclerose múltipla (EM. O objetivo do presente estudo foi avaliar a fatigabilidade em pacientes com EM pela aplicação de exercícios isotônicos e isométricos com dinamômetro manual. Como resultados, a fatigabilidade, a força e o tempo máximo de isometria são semelhantes estatisticamente entre o grupo controle e o grupo de EM. Conclui-se que embora a queixa subjetiva de fadiga seja freqüente na EM, a fatigabilidade e a recuperação após o exercício demonstraram ser normais.Fatigue is one of the most commom disabling symptoms in multiple sclerosis (MS. The aim of this study was to evaluate the fatigability on patients with MS by the aplication of hand grip isotonic and isometric exercises with dynamometer. As results the fatigability, the isometric strenght and time were statistically similar in the control group and in MS. We conclude that although fatigue is a frequent subjective complaint on MS, the fatigability and the recover after exercises seems to be normal.

  15. TEMTADS Adjunct Sensor Systems Hand-Held EMI Sensor for Cued UXO Discrimination (ESTCP MR-200807) and Man-Portable EMI Array for UXO Detection and Discrimination (ESTCP MR-200909)

    Science.gov (United States)

    2012-04-05

    type soil [3]. The Elkton Series consist of very deep, slowly permeable , poorly drained soils. These soils formed in silty aeolin sediments and...be used for classification, and were classified as "can’t analyze". Those targets included nails , 50 caliber slugs, "magnetic rocks", wire, small

  16. TEMTADS Adjunct Sensor Systems Hand-held EMI Sensor for Cued UXO Discrimination (ESTCP MR-200807) and Man-Portable EMI Array for UXO Detection and Discrimination (ESTCP MR-200909) Cost and Performance Report

    Science.gov (United States)

    2012-06-27

    19  6.2.2  Remington Woods, CT...authors would also like to thank Brian Ambrose of DuPont for providing access to the Remington Woods, CT site as part of their ongoing remediation...efforts and to Jeffrey Kronick of URS Corporation for onsite support at the Remington Woods Site. Andrew Schwartz of the U.S. Army Corps of Engineers

  17. 手持心率变异性采集分析系统的设计%Design of Hand-held Heart Rate Variability Acquisition and Analysis System

    Institute of Scientific and Technical Information of China (English)

    李开元; 王步青; 王卫东

    2012-01-01

    提出了手持式心率变异性采集、分析系统的设计,通过双手按触电极采集并存储患者的5分钟心电信号;利用USB口上传PC机,使用LabVIEW编写的软件分析心率变异性参数;心率变异性参数计算,计算函数用matlab编写并生成com组件实现.%A design of handheld heart rate variability acquisition and analysis system is proposed. The system collects and stores the patient's ECG every five minutes through both hands touching on the electrodes, and then -uploads data to a PC through USB port. The system uses software written in LabVIEW to analyze heart rate variability parameters, The parameters calculated function is programmed and generated to com components in Matlab.

  18. Using the intraoperative hand held probe without lymphoscintigraphy or using only dye correlates with higher sensory morbidity following sentinel lymph node biopsy in breast cancer: A review of the literature

    Directory of Open Access Journals (Sweden)

    Travis Arlene

    2005-09-01

    Full Text Available Abstract Background There are no studies that have directly investigated the incremental reduction in sensory morbidity that lymphoscintigraphy images (LS and triangulated body marking or other skin marking techniques provide during sentinel lymph node biopsy (SLNB compared to using only the probe without LS and skin marking or using only dye. However, an indirect assessment of this potential for additional sensory morbidity reduction is possible by extracting morbidity data from studies comparing the morbidity of SLNB to that of axillary lymph node dissection. Methods A literature search yielded 13 articles that had data on sensory morbidity at specific time points on pain, numbness or paresthesia from SLNB that used radiotracer and probe or used only dye as a primary method of finding the sentinel node (SN. Of these, 10 utilized LS, while 3 did not utilize LS. By matching the data in studies not employing LS to the studies that did, comparisons regarding the percentage of patients experiencing pain, numbness/paresthesia after SLNB could be reasonably attempted at a cutoff of 9 months. Results In the 7 studies reporting on pain after 9 months (> 9 months that used LS (1347 patients, 13.8% of patients reported these symptoms, while in the one study that did not use LS (143 patients, 28.7% of patients reported these symptoms at > 9 months (P 9 months that used LS (601 patients, 12.5% of patients reported these symptoms, while in the 3 studies that did not use LS (229 patients, 23.1% of patients reported these symptoms at > 9 months (P = 0.0002. Similar trends were also noted for all these symptoms at ≤ 9 months. Conclusion Because of variations in techniques and time of assessing morbidity, direct comparisons between studies are difficult. Nevertheless at a minimum, a clear trend is present: having the LS images and skin markings to assist during SLNB appears to yield more favorable morbidity outcomes for the patients compared to performing SLNB with only the probe or performing SLNB with dye alone. These results are extremely pertinent, as the main reason for performing SLNB itself in the first place is to achieve reduced morbidity.

  19. Apparel at Work

    DEFF Research Database (Denmark)

    Bjerck, Mari

    analyses the project Uni-Form’s product development process and seeks to show how work research can benefit from employing more materiality-based studies. Work clothes and uniforms for women in male-dominated occupations have come in the form of men’s clothes or feminized copies of men's clothes where form......This dissertation is concerned with work uniforms for women in male-dominated manual occupations. As such, it has analysed parts of the gender-segregated labour market in light of material conditions that dress workers every day. This has been done on the background of a research and development...... project called Uni-Form funded by the Research Council of Norway. The dissertation presents findings from ethnographic fieldwork in six male-dominated occupations; construction, skilled manual work, industrial production, off- and onshore gas and oil production, industrial fishing and the Navy. It also...

  20. Evolution of working memory

    National Research Council Canada - National Science Library

    Peter Carruthers

    2013-01-01

    Working memory (WM) is fundamental to many aspects of human life, including learning, speech and text comprehension, prospection and future planning, and explicit "system 2" forms of reasoning, as well as overlapping...

  1. Temptation at work

    DEFF Research Database (Denmark)

    Bucciol, Alessandro; Houser, Daniel; Piovesan, Marco

    2013-01-01

    To encourage worker productivity, companies routinely adopt policies requiring employees to delay gratification. For example, offices might prohibit use of the internet for personal purposes during regular business hours. Recent work in social psychology, however, suggests that using willpower...

  2. Work and Recognition

    DEFF Research Database (Denmark)

    Willig, Rasmus

    2004-01-01

    individual and collective identity formation and has led to an increase in social pathological illnesses such as stress and depression. By juxtaposing these analyses with Honneth’s theory on recognition, we conclude that the contemporary logic of work is unable to provide adequate forms of recognition......The article deals with the relationship between work and recognition, taking Axel Honneth’s social-philosophical theory of the struggle for recognition as its point of departure. In order to give sociological substance to Honneth’s theory, we turn to three contemporary social theorists - Jean......-Pierre Le Goff, Christophe Dejours and Emmanuel Renault. In spite of many differences, their work is united by a critical description of the logic of work and its consequences for individual individuation. These theorists agree that the growth of autonomy, flexibility and mobility has destabilised...

  3. Distributed Project Work

    DEFF Research Database (Denmark)

    Borch, Ole; Kirkegaard, B.; Knudsen, Morten

    1998-01-01

    Project work has been used for many years at Aalborg University to improve learning of theory and methods given in courses. In a closed environment where the students are forming a group in a single room, the interaction behaviour is more or less given from the natural life. Group work...... in a distributed fashion over the Internet needs more attention to the interaction protocol since the physical group room is not existing. The purpose in this paper is to develop a method for online project work by using the product: Basic Support for Cooperative Work (BSCV). An analysis of a well-proven protocol...... for information exchange in the traditional project environment is performed. A group of teachers and a student group using small project examples test the method. The first test group used a prototype for testing and found the new activity synchronization difficult to adapt, so the method was finally adjusted...

  4. Working conditions for welders

    Directory of Open Access Journals (Sweden)

    Eduardo Ferro dos Santos

    2016-08-01

    Full Text Available This research examines from the point of view of ergonomics, the possibilities of intervention onimprovements in working conditions of industrial welders. We raised the main factors leading todifficulties and constraints in this activity, especially with regard to biomechanical conditions. Inaddition, the study presents a structured approach as the requirements of ergonomics Frenchconfronting the real problems of welders, which are not in work, performed by outsideconsultants who, in a sense, hide real conditions of work. It was through a case study, the majority ofwork in both the scientific literature on the work of external consulting expertise. The constraints of thewelders are characterized as postural and behavioral risks, not showing that behind these, there arecharacteristics of requirements the solder that force the worker to adopt efforts biomechanical posture to which they are unable to behave properly as stated in the research.

  5. Working with Speakers.

    Science.gov (United States)

    Pestel, Ann

    1989-01-01

    The author discusses working with speakers from business and industry to present career information at the secondary level. Advice for speakers is presented, as well as tips for program coordinators. (CH)

  6. Developing Effective Working Relationships.

    Science.gov (United States)

    Bennett, Roger, Ed.; And Others

    1990-01-01

    Two workshops are described in detail. One explores ways to increase the effectiveness of work groups and includes the workshop leader's personal observations. The second involves training transformational leaders, whose characteristics include idealized influence, individualized consideration, intellectual stimulation, and inspirational…

  7. RadWorks Project

    Data.gov (United States)

    National Aeronautics and Space Administration — For the first two years of the project (FY12-13), the RadWorks project has consisted of two top-level elements. The first element involved the prototype and...

  8. Live to work or love to work: work craving and work engagement

    National Research Council Canada - National Science Library

    Wojdylo, Kamila; Baumann, Nicola; Fischbach, Lis; Engeser, Stefan

    2014-01-01

    According to the theory of work craving, a workaholic has a craving for self-worth compensatory incentives and an expectation of relief from negative affect experienced through neurotic perfectionism...

  9. Live to Work or Love to Work: Work Craving and Work Engagement: e106379

    National Research Council Canada - National Science Library

    Kamila Wojdylo; Nicola Baumann; Lis Fischbach; Stefan Engeser

    2014-01-01

      Objective According to the theory of work craving, a workaholic has a craving for self-worth compensatory incentives and an expectation of relief from negative affect experienced through neurotic...

  10. HIP osteoarthritis and work.

    Science.gov (United States)

    Harris, E Clare; Coggon, David

    2015-06-01

    Epidemiological evidence points strongly to a hazard of hip osteoarthritis from heavy manual work. Harmful exposures may be reduced by the elimination or redesign of processes and the use of mechanical aids. Reducing obesity might help to protect workers whose need to perform heavy lifting cannot be eliminated. Particularly high relative risks have been reported in farmers, and hip osteoarthritis is a prescribed occupational disease in the UK for long-term employees in agriculture. Even where it is not attributable to employment, hip osteoarthritis impacts importantly on the capacity to work. Factors that may influence work participation include the severity of disease, the physical demands of the job, age and the size of the employer. Published research does not provide a strong guide to the timing of return to work following hip arthroplasty for osteoarthritis, and it is unclear whether patients should avoid heavy manual tasks in their future employment.

  11. Audit of public work

    Directory of Open Access Journals (Sweden)

    Valtencir Godinho de Camargo

    2011-09-01

    Full Text Available The municipal public works, especially the reform and small constructions, with mobilization of manpower with up to 20 employees, where it is not mandatory elaboration of Program Conditions and Work Environment in the Construction Industry, are conducted without meeting the regulatory norm, which are motivated by the deficiency in the elaboration of the budget, the bidding documents, in the contract and supervision. The unfamiliarity specialized in the area of the Engineering of Safety of the Work adds to the factors that lead the public agency take unnecessary risks, as the objective responsibility, the labor charges and indemnities for illnesses, accidents or deaths. This article aims to indicate the guidelines for the program to health and safety is applied effectively in public works.

  12. Refugees’ rights to work

    Directory of Open Access Journals (Sweden)

    Emily E Arnold-Fernández

    2013-09-01

    Full Text Available Host economies benefit when refugees work. Nations seeking economic growth and political stability should allow refugees to access employment and to enjoy employment-related rights.

  13. Ticket To Work

    Data.gov (United States)

    Social Security Administration — Captures information on disability beneficiaries that are participating in one of the "the return to work initiative"; to help become self sufficient, and to limit...

  14. Computers, Networks and Work.

    Science.gov (United States)

    Sproull, Lee; Kiesler, Sara

    1991-01-01

    Discussed are how computer networks can affect the nature of work and the relationships between managers and employees. The differences between face-to-face exchanges and electronic interactions are described. (KR)

  15. Home/Work.

    Science.gov (United States)

    Atkinson, William

    1985-01-01

    In the computer age, telecommuting programs can be an effective means of recruiting and retaining valuable employees. This article discusses how companies can select employee participants and how to manage people working at home. (Author/CT)

  16. Work related shoulder disorders

    DEFF Research Database (Denmark)

    Svendsen, Susanne Wulff; Bonde, Jens Peter; Mathiassen, S.E.

    2004-01-01

    Aims: To determine quantitative exposure-response relations between work with highly elevated arms and supraspinatus tendinitis, shoulder pain with disability, and shoulder pain without disability. Methods: A cross sectional study was conducted in a historical cohort of 1886 males from three...... occupational groups. Exposure measurements were performed for four consecutive working days in a random sample of 72 currently employed subjects. Individual work histories were obtained by questionnaire and register data. Health status was ascertained by physical examination blinded towards exposure...... and symptoms. Data were analysed by generalised estimating equation and multiple logistic regression with adjustment for potential confounders. Results: For current upper arm elevation above 90°, a duration increment of 1% of the daily working hours was associated with odds ratios of 1.23 (95% CI 1.10 to 1...

  17. Play at Work

    DEFF Research Database (Denmark)

    Meier Sørensen, Bent; Spoelstra, Sverre

    2012-01-01

    for business and the other insists that work and play are largely indistinguishable in the postindustrial organization. Our field study of a design and communications company in Denmark shows that organizational play can be much more than just functional to the organization. We identify three ways in which......The interest in organizational play is growing, both in popular business discourse and organization studies. As the presumption that play is dysfunctional for organizations is increasingly discarded, the existing positions may be divided into two camps; one proposes ‘serious play’ as an engine...... workplaces engage in play: play as a (serious) continuation of work, play as a (critical) intervention into work and play as an (uninvited) usurpation of work....

  18. Apparel at Work

    DEFF Research Database (Denmark)

    Bjerck, Mari

    analyses the project Uni-Form’s product development process and seeks to show how work research can benefit from employing more materiality-based studies. Work clothes and uniforms for women in male-dominated occupations have come in the form of men’s clothes or feminized copies of men's clothes where form......This dissertation is concerned with work uniforms for women in male-dominated manual occupations. As such, it has analysed parts of the gender-segregated labour market in light of material conditions that dress workers every day. This has been done on the background of a research and development...... project called Uni-Form funded by the Research Council of Norway. The dissertation presents findings from ethnographic fieldwork in six male-dominated occupations; construction, skilled manual work, industrial production, off- and onshore gas and oil production, industrial fishing and the Navy. It also...

  19. Working It Out

    Science.gov (United States)

    ... Navigation Bar Home Current Issue Past Issues Working It Out Past Issues / Summer 2007 Table of Contents ... of this technique. Especially when combined with medications, it can help relieve depression. Research shows that it ...

  20. Work and Home

    Science.gov (United States)

    ... considered before. In this article Staying in the game at work MS is a complex and unpredictable ... sexuality and parenting. Share Smaller Text Larger Text Print Find an MS Care Provider The Partners in ...

  1. How Lungs Work

    Science.gov (United States)

    ... Must Resume Work on Bipartisan Healthcare Improvements Blog: Yoga, Tai Chi and Your Lungs: The Benefits of ... number of items"); $("#local_list_xml").quickPagination(); }, error: function() { console.log("An error occurred while processing XML ...

  2. Work and Recognition

    DEFF Research Database (Denmark)

    Willig, Rasmus

    2004-01-01

    individual and collective identity formation and has led to an increase in social pathological illnesses such as stress and depression. By juxtaposing these analyses with Honneth’s theory on recognition, we conclude that the contemporary logic of work is unable to provide adequate forms of recognition......The article deals with the relationship between work and recognition, taking Axel Honneth’s social-philosophical theory of the struggle for recognition as its point of departure. In order to give sociological substance to Honneth’s theory, we turn to three contemporary social theorists - Jean......-Pierre Le Goff, Christophe Dejours and Emmanuel Renault. In spite of many differences, their work is united by a critical description of the logic of work and its consequences for individual individuation. These theorists agree that the growth of autonomy, flexibility and mobility has destabilised...

  3. Work at Building 513

    CERN Multimedia

    IT Department

    2006-01-01

    As part of IT's preparations to meet the challenge of LHC computing, a new chilled water production unit is being constructed for the Computer Centre. The air conditioning work will start in mid-January and last until June 2006. During this period, access to the car park of Building 513 will be restricted. Please consult the plan for details of the area affected by the work. With apologies for the inconvenience. IT Department

  4. Work at Building 513

    CERN Multimedia

    IT Department

    2006-01-01

    As part of IT's preparations to meet the challenge of LHC computing, a new chilled water production unit is being constructed for the Computer Centre. The air conditioning work will start in mid-January and last until June 2006. During this period access to the car park of Building 513 will be restricted. Please consult the plan for details of the area affected by the work. With apologies for the inconvenience, IT Department

  5. How the Japanese work.

    Science.gov (United States)

    Chambers, D W

    1998-01-01

    The Japanese do not work harder or even use different approaches so much as they aim for a different result--one that balances process and results and extends the definition of quality beyond the product itself to include cost and convenience to the customer as well. Ten methods of the Japanese kaizen culture of work are presented with applications and contrasts to American dentistry.

  6. Parton Distributions Working Group

    Energy Technology Data Exchange (ETDEWEB)

    de Barbaro, L.; Keller, S. A.; Kuhlmann, S.; Schellman, H.; Tung, W.-K.

    2000-07-20

    This report summarizes the activities of the Parton Distributions Working Group of the QCD and Weak Boson Physics workshop held in preparation for Run II at the Fermilab Tevatron. The main focus of this working group was to investigate the different issues associated with the development of quantitative tools to estimate parton distribution functions uncertainties. In the conclusion, the authors introduce a Manifesto that describes an optimal method for reporting data.

  7. Call For Decent Work

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Forum discusses improving conditions for working people across the world To"put a human face on the global economy"has long been the hope of Juan Somavia,Director General of the International Labor Organization. At the 2008 International Forum on Economic Globalization and Trade Unions held in Beijing on January 7-8,Somavia reit- erated the concept of decent work. The forum focused on the challenges of globalization to workers’ rights in develop-

  8. Succesful Aging at Work

    OpenAIRE

    Bruni, Ilaria

    2016-01-01

    As the context of work and the age composition of the workforce are changing, this raises several issues to the work capacity and participation of the older age groups in the workforce. With the growth of positive psychology researchers have begun to focus not only on the problems that mature workers encounter in the workplace, such as cognitive loss and discrimination deriving from stereotypes, but also on the potential strengths and resources. Despite the attention paid to this subject, the...

  9. Language Works. Linguistic Journal

    DEFF Research Database (Denmark)

    Hartling, Anna Sofie; Nørreby, Thomas Rørbeck; Skovse, Astrid Ravn

    2016-01-01

    Language works! – and with this initiative and this journal we want to give the opportunity to many more students to present their linguistic research to each other, to the scientific community and to all interested.......Language works! – and with this initiative and this journal we want to give the opportunity to many more students to present their linguistic research to each other, to the scientific community and to all interested....

  10. Women, work and wine

    OpenAIRE

    Buvik, Kristin; Sagvaag, Hildegunn

    2012-01-01

    AIMS – There are many grey zones between work and leisure time, where colleagues drink together. Managers are more often involved in grey-zone situations than other employees, and the managerial arena is dominated by men. What is the significance of female managers’ visibility in their understanding of their own consumption of alcohol? What leads female managers to moderate their work-related alcohol consumption? DATA AND METHODS – To capture the female managers’ perspectives, ...

  11. Language Works. Linguistic Journal

    DEFF Research Database (Denmark)

    Hartling, Anna Sofie; Nørreby, Thomas Rørbeck; Skovse, Astrid Ravn

    2016-01-01

    Language works! – and with this initiative and this journal we want to give the opportunity to many more students to present their linguistic research to each other, to the scientific community and to all interested.......Language works! – and with this initiative and this journal we want to give the opportunity to many more students to present their linguistic research to each other, to the scientific community and to all interested....

  12. Realism in Steinbeck's Works

    Institute of Scientific and Technical Information of China (English)

    龙中莲

    2009-01-01

    As the foremost novelist of the American Depression of the 1930s,John Steinbeck explored hard into the social problems of his time and tried to represent them into his works.It is no wonder his works are mostly carded realism- this literary mode of writing that gives the impression of recording and sometimes reflecting faithfully the actual life of the 1930s.

  13. Existential Social Work

    Directory of Open Access Journals (Sweden)

    Donald F. Krill

    2014-05-01

    Full Text Available The existential impact upon social work began in the 1960’s with the emphasis upon freedom, responsibility and a sense of the absurd. It affirmed human potential while faulting the deterministic thinking that was popular with psychological theorists at that time. It was open to the prospects of spirituality, but was less than optimistic concerning great progress among social institutions. It was a forerunner to the strengths-based social work programs of our present day.

  14. RefWorks

    DEFF Research Database (Denmark)

    Schneider, Maria Viftrup; Lodberg, Karin; Jensen, Trine Marlene Nedergaard

    2010-01-01

    Manual til referencehåndteringsprogrammet RefWorks. Programmet kan anvendes til at holde styr på referencer og trække dem ind som kilder i dine dokumenter.......Manual til referencehåndteringsprogrammet RefWorks. Programmet kan anvendes til at holde styr på referencer og trække dem ind som kilder i dine dokumenter....

  15. Multicultural group work

    DEFF Research Database (Denmark)

    Hansen, Annette Skovsted

    2014-01-01

    Motivation for the activity I use this strategy for forming groups to ensure diverse/multicultural groups that combine a variety of different strengths and resources based on student's academic, disciplinary, linguistic, national, personal and work backgrounds.......Motivation for the activity I use this strategy for forming groups to ensure diverse/multicultural groups that combine a variety of different strengths and resources based on student's academic, disciplinary, linguistic, national, personal and work backgrounds....

  16. Women, work and stress

    OpenAIRE

    Evolahti, Annika

    2012-01-01

    Work-related stress has become a major public health problem in Western societies. In Sweden women account for the majority of long-term sick leave and the most common reasons are psychiatric conditions such as depression and stress-related diagnoses. Stressful working conditions have been shown to influence both physical and psychological health by acting as important mediating factors in the development of e.g. cardiovascular and musculoskeletal disorders and symptoms of depr...

  17. Bike 2 Work

    CERN Multimedia

    Anaïs Schaeffer

    2012-01-01

    Are you a CERN cyclist? If so, join the Bike 2 Work competition that has just started! The more kilometres you travel by bike, the closer you’ll get to winning…   Yngve Inntjore Levinsen works at CERN, in the BE Department, and is one of the many people who travel to work by bike. Convinced by the benefits and the well-being that this mode of transport brings, he decided to promote it by running a competition. “Everyone working at CERN can participate,” says Yngve. “They just need to sign up on the competition website, or via their Facebook login. Then, participants simply have to report regularly the number of kilometres they cover by bike, travelling between home and work, or during the day between different points at CERN. ” The competition began on 1 March and will last all year long. The 2012 results will be announced at the end of the year. Of course, the winner will be the cyclist who has travelled the most kilometres during the ...

  18. Connecting work and education

    DEFF Research Database (Denmark)

    Jørgensen, Christian Helms

    2004-01-01

    The aim of this article is to examine the interplay between learning in school and learning in the workplace - and its problems. Historically, education and work have become separated and each developed its own rationale – a school rationale and a production rationale, both of which may form...... the foundation for interplay. Concurrently with this, the learners apply a subjective rationale based on their personal expectations and interests in education and work in the course of their lives. Using the three players, school, work place and employee as a starting point, three different rationales upon...... which to base interplay can be deduced. Since viable interplay may not be established based on one rationale alone, we need an institutional framework to mediate between them. This article proposes that a modernized version of the Dual System of vocational education may be best to provide...

  19. Innovative Work Behavior

    DEFF Research Database (Denmark)

    Pihl-Thingvad, Signe; Klausen, Kurt Klaudi

    For many public organizations innovation has become a widely recognized approach for changing and developing the organization. However, for innovation to become effective it must be implemented. The implementation of innovation is important at all organizational levels – it encompasses the behavi......For many public organizations innovation has become a widely recognized approach for changing and developing the organization. However, for innovation to become effective it must be implemented. The implementation of innovation is important at all organizational levels – it encompasses...... strategies are public managers using in order to create more innovative work behaviour? How do public managers create an innovative climate in the organization which affects the innovative work behaviour positively? In this paper we examine the implementation of innovation in a large Danish municipality...... a multi-level analysis of the possibilities for managers at different organizational levels to affect the implementation of innovation through the innovative work behaviour of the employees....

  20. Human Work Interaction Design

    DEFF Research Database (Denmark)

    2015-01-01

    In this paper, we review research in the emerging practice and research field of Human Work Interaction Design (HWID). We present a HWID frame-work, and a sample of 54 papers from workshops, conferences and journals from the period 2009-2014. We group the papers into six topical groups, and then at......-tempt to map these groups to the framework to find research gaps for future re-search. We find that the groups of papers cover all areas of the framework well for a variety of work and leisure domains. The area in strongest need for more research papers is the development of the holistic framework itself....... Furthermore, much focus has been on studying design sketching or implemented systems-in-use, while little attention has been paid to mature design (prototypes) or early implementation (content templates). In conclusion, we recommend an update to the framework so that it can be also useful for research...

  1. Connecting work and education

    DEFF Research Database (Denmark)

    Jørgensen, Christian Helms

    2004-01-01

    The aim of this article is to examine the interplay between learning in school and learning in the workplace - and its problems. Historically, education and work have become separated and each developed its own rationale – a school rationale and a production rationale, both of which may form...... the foundation for interplay. Concurrently with this, the learners apply a subjective rationale based on their personal expectations and interests in education and work in the course of their lives. Using the three players, school, work place and employee as a starting point, three different rationales upon...... which to base interplay can be deduced. Since viable interplay may not be established based on one rationale alone, we need an institutional framework to mediate between them. This article proposes that a modernized version of the Dual System of vocational education may be best to provide...

  2. Callings, work role fit, psychological meaningfulness and work ...

    African Journals Online (AJOL)

    Scale, Work-Life Questionnaire, Psychological Meaningfulness Scale, and Work Engagement. Scale were .... their work life meaningful and 82% would continue to work even if they could receive ..... A proposed model of lifestyle balance.

  3. ASSESSMENT OF WORK-SPACE AND WORK-METHOD DESIGNS ...

    African Journals Online (AJOL)

    ASSESSMENT OF WORK-SPACE AND WORK-METHOD DESIGNS IN NIGERIA AUTOMOBILE SERVICE AND REPAIR INDUSTRY. ... Nigerian Journal of Technology ... This research assessed work-space (WsD) and work-method designs ...

  4. Work group diversity.

    Science.gov (United States)

    van Knippenberg, Daan; Schippers, Michaéla C

    2007-01-01

    Work group diversity, the degree to which there are differences between group members, may affect group process and performance positively as well as negatively. Much is still unclear about the effects of diversity, however. We review the 1997-2005 literature on work group diversity to assess the state of the art and to identify key issues for future research. This review points to the need for more complex conceptualizations of diversity, as well as to the need for more empirical attention to the processes that are assumed to underlie the effects of diversity on group process and performance and to the contingency factors of these processes.

  5. Between health and work

    Directory of Open Access Journals (Sweden)

    Prendecki Krzysztof

    2016-06-01

    Full Text Available In this article the concept of work in the context of workers’ health is being considered. Different types of employers and their impact on quality and productivity have been analyzed. The authors mentioned also a very important and frequently occurring problem of mobbing or bullying of employees by supervisors or co-workers. Theoretical considerations have been supported by analysis of available empirical studies. Reference was made to the situation in Poland and in other countries. The last part of the article pointed out the relationship between working time and productivity. Authors quoted interesting insights and examples associated with humans’ laziness, which can achieve exactly the opposite effect.

  6. Aggression at Work

    DEFF Research Database (Denmark)

    Høgh, Annie

    -workers. Victims of bullying, nasty teasing, and violence reported lower support from supervisors and more conflicts and quarrels than non-exposed. In addition, male victims of nasty teasing also reported more role-conflicts and role-ambiguity, and female victims reported more role-conflicts. Victims of bullying...... independently of age, fatigue at baseline, role conflicts, social climate at work, education, job and social class and nasty teasing at follow-up. Exposure to violence predicted fatigue five years later independently of age, gender, and fatigue at baseline, social climate at work and social class and violence...

  7. Motorway maintenance work

    CERN Document Server

    2005-01-01

    Built 20 years ago, the airport section of the Geneva motorway bypass is now in need of maintenance work and alterations to bring it into line with the new standards. Two-lane traffic will be maintained in both directions during the work, which will be carried out in 2006 and 2007, but there will be various temporary special traffic arrangements in force. We should like to thank you in advance for your understanding. Civil Engineering Department, DAEL, State of Geneva More information: tel. 163 or www.autoroute-aeroport.ch Fewer cars, fewer traffic jams, with www.covoiturage.ch

  8. Fermilab science at work

    CERN Document Server

    Six days. Three frontiers. One amazing lab. From 2010 to 2012, a film crew followed a group of scientists at the Department of Energy's Fermilab and filmed them at work and at home. This 40-minute documentary shows the diversity of the people, research and work at Fermilab. Viewers catch a true behind-the-scenes look of the United States' premier particle physics laboratory while scientists explain why their research is important to them and the world. Scientists included: Brendan Casey, Herman White, Craig Hogan, Denton Morris, Mary Convery, Bonnie Fleming, Deborah Harris, Dave Schmitz, Brenna Flaugher and Aron Soha.

  9. Working With New Designs

    DEFF Research Database (Denmark)

    Visholm, Steen; Beck, Ulla Charlotte

    2014-01-01

    In this paper the learning concept of group relations conferences are discussed. The authors have worked with group relations conferences (GRC) in different contexts for many years-mainly as a part of educational programmes for managers and consultants (OPU at IGA Copenhagen, MPO at Roskilde...... decides for themselves what makes sense and what does not. This principle sometimes work as a defence against a closer examination of the two questions: does GRCs provide relevant experiences to learn from, and what is it you learn or can expect to learn at a GRC. While two earlier papers (Beck & Visholm...

  10. Working environment committees

    DEFF Research Database (Denmark)

    Scheller, Vibeke Kristine; Hansen, Agnete Meldgaard; Nielsen, Klaus T.

    In Denmark, a new Working Environment Act was passed in 2010. The assumptions behind the act are that increased flexibility in the organization of OHS work will: 1) enable a more systematic approach, 2) elevate OHS issues to a strategic level within the company, and 3) integrate these concerns...... in other key business processes. In this paper we examine the validity of these assumptions through a number of qualitative case studies. We discuss whether flexibility, systematization, and strategy lead to better OHS discussions and practices within the case companies....

  11. Organizing design work

    DEFF Research Database (Denmark)

    Scheuer, John Damm

    2016-01-01

    The aim of this paper is to demonstrate the importance of the kind of understanding of organizing that is implied by design theories for project managers' understanding and organizing of design work. Five theories and their organizing consequences for project managers organizing of design work...... are analyzed. The paper contributes to design research and organization studies by putting the organizing of design projects on the research agenda. It also contributes by demonstrating the importance of being aware of the ontological and epistemological assumptions and organizing consequences of different...

  12. SolidWorks : opetuspaketti

    OpenAIRE

    Myllymäki, Vesa

    2011-01-01

    Opinnäytetyössä tutkittiin mahdollisuuksia tehdä opetusvideoita SolidWorks -ohjelman käyttämisestä. Tähän tarkoitukseen löydettiin menetelmään sopiva ohjelma, CamStudio, jota sitten sovellettiin käytännössä. Camstudio ja SolidWorks ohjelmia hyödyntäen luotiin videoita kolmiulotteisista mallinnusprosesseista. Menetelmä toimi, mutta sen käyttökelpoisuuteen liittyi ongelmia. Videoden laatu on heikko, mutta sen parantaminen merkitsisi suurempaa tiedostokokoa, mikä voi tuottaa tietokantaongelmia. ...

  13. Working with Paul

    Science.gov (United States)

    Thomas, June

    2006-01-01

    The author is a learning support teacher and works with children at Key Stage 3 (KS3) who are struggling to keep up with their peers in most areas of the curriculum. Many of them have specific learning difficulties such as dyslexia and dyspraxia and problems may emerge in reading, spelling, writing, mathematics, speaking or listening.…

  14. Human Work Interaction Design

    DEFF Research Database (Denmark)

    2015-01-01

    In this paper, we review research in the emerging practice and research field of Human Work Interaction Design (HWID). We present a HWID framework, and a sample of 54 HWID related papers from workshops, conferences and journals from the period 2009–2014. We group the papers into six topical group...

  15. High Performance Work Systems

    NARCIS (Netherlands)

    J.P.P.E.F. Boselie (Paul); A. van der Wiele (Ton)

    2002-01-01

    textabstractResearch, summarized and classified in the work of Delery and Doty (1996), Guest (1997), Paauwe and Richardson (1997) and Boselie et al. (2001), suggests significant impact of Human Resources Management (HRM) on the competitive advantage of organizations. The mainstream research on this

  16. Mindful Social Work?

    Directory of Open Access Journals (Sweden)

    Debaene, Raf

    2009-12-01

    Full Text Available Mindfulness gets growing attention in the education and practice of social work. It is seen as an important source of inspiration for social work and as a counterbalance for the rationalization of social work. Hick states that mindfulness “is an orientation to our everyday experiences that can be cultivated by means of various exercises and practices. By opening up in a particular way to their internal and external experiences, social workers and clients are better able to understand what is happening to them in both a psychological and sociological sense. With this understanding, people are better able to see the variety of ways in which they can respond. Habitual reactions are more easily avoided, and inner peace and balance are developed” (Hick 2009: 1. Despite this praise of mindfulness as an important source of inspiration and the expectation that its popularity might expand in the next century, it is argued in this essay by Raf Debaene that mindfulness, although possibly very useful in some settings, had very little to do with social work.

  17. How Things Work.

    Science.gov (United States)

    Crane, H. Richard

    This book is a collection of 66 "How Things Work" columns from the journal "The Physics Teacher," 1983-1991. All the devices and phenomena are ones that are met in everyday life, involve physics principles, and require explanations that are not immediately obvious. Topics include: touch panels in elevators, liquid crystal…

  18. Guided Learning at Work.

    Science.gov (United States)

    Billett, Stephen

    2000-01-01

    Guided learning (questioning, diagrams/analogies, modeling, coaching) was studied through critical incident interviews in five workplaces. Participation in everyday work activities was the most effective contributor to workplace learning. Organizational readiness and the efficacy of guided learning in resolving novel tasks were also important. (SK)

  19. Podcasting as Transformative Work

    Science.gov (United States)

    Vasquez, Vivian Maria

    2015-01-01

    Although technology is most often heralded an intrinsic efficiency, the process of using technology to create a text is full of opportunities to learn new information, create and distribute knowledge, and engage in identity work. This article explores how the production of 1 such technological text, a podcast, offered students opportunities to…

  20. Authenticity at Work

    DEFF Research Database (Denmark)

    Ekman, Susanne

    2013-01-01

    This chapter draws on ethnographic material from creative knowledge work organizations to illustrate the contradictory effects of the ‘connexionist logic’ which are not captured by the text analysis in The New Spirit of Capitalism (NSC). Mainly, the chapter focuses on Boltanski & Chiapello's claim...