2,805 research outputs found
City of Henderson v. Spangler, 136 Nev. Adv. Op. 25 (May 14, 2020)
City of Henderson Police Officer Jared Spangler sought workersâ compensation benefits, alleging that workplace conditions aggravated his significant loss of hearing. Multiple medical experts opined that Spanglerâs hearing loss likely preexisted his employment, but that the workplace conditions increased his symptoms. However, the Cityâs compensation administrator denied Spanglerâs claim because Spangler failed to show that his symptoms arose out of his employment. The appeals officer affirmed the decision, but the district court reversed.
On review, the Nevada Court of Appeals first determined that Spangler alleged an âoccupational diseaseâ and not an âaccidental injury.â Second, they clarified two historical uses of the word âpreexistingââone meaning preexisting the claim, the other meaning preexisting the employment. Third, they discovered that Spanglerâs claim was governed by NRS 617.366(1), which provides that a preexisting condition could be compensable if an occupational disease aggravates the condition. Finally, they determined that the appeals officerâs decision to deny the claim was based on (1) an erroneous interpretation of the relevant statutes, and (2) a failure to apply NRS 617.366(1). Spangler needed only to show that his preexisting condition was aggravated by an occupational disease. Thus, the court affirmed the district courtâs reversal and remanded for further proceedings
Open-Source ANSS Quake Monitoring System Software
ANSS stands for the Advanced National Seismic System of the U.S.A., and ANSS Quake Monitoring System (AQMS) is the earthquake management system (EMS) that most of its member regional seismic networks (RSNs) use. AQMS is based on Earthworm, but instead of storing files on disk, it uses a relational database with replication capability to store pick, amplitude, waveform, and event parameters. The replicated database and other features of AQMS make it a fully redundant system. A graphical user interface written in Java, Jiggle, is used to review automatically generated picks and event solutions, relocate events, and recalculate magnitudes. Addâon mechanisms to produce various postearthquake products such as ShakeMaps and focal mechanisms are available as well. It provides a configurable automatic alarming and notification system. The Pacific Northwest Seismic Network, one of the Tier 1 ANSS RSNs, has modified AQMS to be compatible with a freely available, capable, openâsource database system, PostgreSQL, and is running this version successfully in production. The AQMS Software Working Group has moved the software from a subversion repository server hosted at the California Institute of Technology to a public repository at gitlab.com. The drawback of AQMS as a whole is that it is complex to fully configure and comprehend. Nevertheless, the fact that it is very capable, documented, and now free to use, might make it an attractive EMS choice for many seismic networks
Low Frequency Tilt Seismology with a Precision Ground Rotation Sensor
We describe measurements of the rotational component of teleseismic surface
waves using an inertial high-precision ground-rotation-sensor installed at the
LIGO Hanford Observatory (LHO). The sensor has a noise floor of 0.4 nrad at 50 mHz and a translational coupling of less than 1 rad/m
enabling translation-free measurement of small rotations. We present
observations of the rotational motion from Rayleigh waves of six teleseismic
events from varied locations and with magnitudes ranging from M6.7 to M7.9.
These events were used to estimate phase dispersion curves which shows
agreement with a similar analysis done with an array of three STS-2
seismometers also located at LHO
CRITERIA FOR EVALUATING A SELECTION SCRENE: SOME PROPOSALS
It is possible to describe a realized selection by means of an indicator, f(x): probability for an individual of value x to be selected. Various models for this indicator are proposed, in the univariate case, and on the assumption that individuals are ranked on a linear index of measured variables. Estimators are defined on the basis of these models for rating traits controlled during selection. A numeric example with ewes is given
Employment and occupational outcomes of workers with musculoskeletal pain in a French region
OBJECTIVES: To study the employment and occupational outcomes of workers who were diagnosed with upper limb musculoskeletal disorders (UL-MSDs) or had complained of upper limb musculoskeletal pain a few years before compared with workers who had no upper limb pain.
METHODS: In 2002-2005, an epidemiological surveillance system was set up. Occupational physicians examined 3710 randomly selected workers. It focused on six UL-MSDs: rotator cuff syndrome, lateral epicondylitis, flexor-extensor peritendinitis of the hands and fingers, de Quervain\u27s disease, carpal tunnel syndrome and ulnar tunnel syndrome. Three groups were constituted: a \u27UL-MSD\u27 group (workers with a clinically diagnosed UL-MSD at baseline, 13% of the cohort); a \u27PAIN\u27 group (workers with pain in the previous 7 days at baseline and without any clinically diagnosed form, 38%); and a \u27HEALTHY\u27 group (workers with no disorder or upper limb pain in the previous 7 days, 49%). They completed a questionnaire between 2007 and 2009.
RESULTS: A total of 2332 responded. Fewer subjects were still in work in the \u27UL-MSD\u27 group (79.3%) than in the \u27PAIN\u27 (85.9%) and \u27HEALTHY\u27 (90.4%) groups, the difference remaining significant after adjusting for gender, age, occupational category, type of company and comorbidities. Of the subjects still in work, 24% had changed their work station in the same company in the \u27PAIN\u27 group compared with 19% in the \u27HEALTHY\u27 group and 21% in the \u27UL-MSD\u27 group.
CONCLUSIONS: This study showed the impact of musculoskeletal pain on employment outcome and the difficulty of keeping workers with musculoskeletal problems at work
Devenir professionnel de salariés des Pays de la Loire souffrant de troubles musculo-squelettiques
The objective was to study the employment and occupational outcomes of workers who were diagnosed with upper limb musculoskeletal disorders (UL-MSDs) or had complained of upper limb musculoskeletal pain a few years before, compared to workers without upper limb pain.
In 2002-2005, 83 occupational physicians examined 3,710 randomly selected workers. Three groups were constituted between 2007 and 2009: a âUL-MSDâ group (workers with a clinically diagnosed UL-MSD); a âMS PAINâ group (workers with pain in the previous seven days and without any clinically diagnosed form); and a âHEALTHYâ group (workers with no disorder or upper limb pain).
A total of 2,287 responded to a questionnaire. Fewer subjects were still working in the âUL-MSDâ group (79.3%) than in the âMS PAINâ (85.9%) and âHEALTHYâ (90.4%) groups. Among the subjects still working, 24% had changed their position in the same company in the âMS PAINâ group, compared to 21% in the âUL-MSDâ group, and 19% in the âHEALTHYâ group.
This study showed the impact of UL-MSDs on employment outcome and of musculoskeletal pain on occupational outcome
Interest of the Ergo-Kit(Âź) for the clinical practice of the occupational physician. A study of 149 patients recruited in a rehabilitation program
OBJECTIVE: Functional capacity evaluation is commonly used to assess the abilities of patients to perform some tasks. Ergo-Kit(Âź) is a validated tool assessing both functional capacities of patients and workplace demands. The objective of this study was to evaluate the relevance of the Ergo-Kit(Âź) data for occupational physicians during the return-to-work process.
METHODS: A retrospective and monocenter study was conducted on all patients included in a rehabilitation program and assessed with the Ergo-Kit(Âź) tool between 2005 and 2014. Workplace demands and patients\u27 functional capacities were evaluated and confronted. Self-beliefs and perceived disability were also assessed and compared to the functional capacity evaluation.
RESULTS: One hundred and forty-nine working-age patients (85 men, 64 women; 39±12 years) suffering from musculoskeletal disorders or other diseases were included. Main causes of mismatch between workplace demands and functional capacities were manual handling of loads, postures with arms away from the body and repetitive motions at work; sitting posture was correlated with a lesser physical workload; and Oswestry score was correlated with functional capacities evaluated by the Ergo-Kit(Ÿ).
CONCLUSION: Ergo-Kit(Âź) is a relevant tool to assess the multidimensional aspects of workplace demands and functional capacities. It could be very helpful for occupational physicians to manage return-to-work
Effect of wing-mounted nacelles on a 42 deg swept supercritical wing configuration at near-sonic speeds
An investigation was made to assess the effect of wing-mounted nacelles on a supercritical wing configuration at near-sonic Mach numbers. The investigation was made by utilizing the Cornell Aeronautical Laboratory 8-foot transonic tunnel and covered a Mach number range from 0.90 to 0.99. Force data and pressure measurements at selected locations were obtained. The investigation with the nacelles on included the effect of spanwise location of the nacelle (semispan locations of 35 and 70 percent) and the effect of area ruling for the nacelles located at the 35 percent semispan station. Tests were also made with the outboard nacelle extended forward so that it was directly adjacent to the inboard nacelle location. These tests provided a direct assessment of the extent of the nacelle interference flow field in a lateral direction
CrĂ©ation dâun score dâĂ©valuation du risque de symptĂŽmes musculo-squelettiques basĂ© sur des facteurs professionnels
Objectif
Lâobjectif de ce travail est la crĂ©ation dâun score dâĂ©valuation du risque de symptĂŽmes musculo-squelettiques (SMS) chroniques des membres supĂ©rieurs, uniquement basĂ© sur des donnĂ©es dâexposition professionnelle aux dĂ©terminants biomĂ©caniques, psychosociaux et organisationnels. Ce score ne prenant pas en compte les facteurs individuels, permettra de classer les situations de travail devant bĂ©nĂ©ficier dâune action de prĂ©vention.
MĂ©thodes
LâĂ©chantillon dâĂ©tude Ă©tait constituĂ© de 1749 salariĂ©s recrutĂ©s lors de la phase dâinclusion de la cohorte des salariĂ©s ligĂ©riens (COSALI). Les facteurs organisationnels, biomĂ©caniques et psychosociaux et les variables associĂ©es aux SMS chroniques ont Ă©tĂ© recueillis par auto-questionnaire. Un score a Ă©tĂ© crĂ©Ă© selon trois mĂ©thodes statistiques : une rĂ©gression logistique binaire, une analyse en clusters suivie dâune analyse par arbre de dĂ©cision et une modĂ©lisation par classes latentes. Chacune de ces mĂ©thodes est susceptible dâentraĂźner la crĂ©ation de scores diffĂ©rents.
RĂ©sultats
Lâarea under the curve (AUC) obtenu par la rĂ©gression logistique Ă©tait de 0,75 contre 0,66 pour lâanalyse en clusters et 0,65 pour lâanalyse en classes latentes. La rĂ©gression logistique a donc Ă©tĂ© retenue pour la crĂ©ation du score. Les facteurs associĂ©s aux SMS chroniques des membres supĂ©rieurs Ă©taient lâintensitĂ© Ă©levĂ©e des efforts physiques ressentie (Ă©chelle RPE de Borg), la rĂ©pĂ©titivitĂ© des gestes plus de 4 h/j, la flexion du coude plus de 2 h/j, lâutilisation de la pince pouce-index plus de 4 h/j, la possibilitĂ© dâinfluencer le dĂ©roulement de son travail et lâaide des collĂšgues. Le score a ensuite Ă©tĂ© crĂ©Ă© Ă partir des paramĂštres estimĂ©s de la rĂ©gression logistique, il sâĂ©tend de â1 à 15. Par exemple, 66 % de lâĂ©chantillon a un score supĂ©rieur ou Ă©gal Ă deux. Pour ce seuil, la valeur prĂ©dictive nĂ©gative est de 93,4 %.
Conclusions
Selon le seuil choisi, le score aboutit Ă une forte valeur prĂ©dictive nĂ©gative. Il pourrait constituer un outil utile aux prĂ©venteurs en entreprise afin de cibler lâeffectif pour lequel il nâest pas indispensable de mettre en place des actions de prĂ©vention. NĂ©anmoins ce score ne permet pas de prĂ©dire avec confiance les salariĂ©s qui seront atteints de SMS. Pour avoir un score plus performant, il faudrait intĂ©grer des facteurs individuels tels que lâĂąge et le sexe, mais la caractĂ©risation par situation de travail nâest alors plus envisageable
- âŠ