3,947 research outputs found
The New Intoxication Defense for Ohio Employers
Ohio workers\u27 compensation system has been in a state of emergency for the last two years as labor and business groups battled over a series of employee-oriented Ohio Supreme Court decisions. Labor groups hailed these decisions as the vehicle which would propel Ohio\u27s workers\u27 compensation law into the twentieth century. Conversely, business groups condemned the decisions asserting that they exposed Ohio employers to infinite liability and destroyed Ohio\u27s industrial climate. S.B. 307 has changed the face of Ohio\u27s workers\u27 compensation law by revamping the definition of injury, establishing an intentional tort fund, and creating a new intoxication defense for Ohio employers. The focus of this Note is section 4123.54(B) which sets forth the skeleton of an intoxication defense for Ohio employers by barring from compensation those injuries which are proximately caused by the employee being intoxicated or under the influence of a non-prescription controlled substance. Due to the emergent nature of S.B. 307, the Ohio Legislature failed to define many of the legal standards set forth therein. After examining the historical development of the law of workers\u27 compensation and the intoxication defenses of other jurisdictions, this Note will define the burden which befalls an Ohio employer who attempts to establish that his employee was intoxicated or under the influence of a nonprescription controlled substance when injured and that such conduct was the proximate cause of the injury. The Note will also explore the methods by which an Ohio employee can rebut his employer\u27s intoxication defense
The New Intoxication Defense for Ohio Employers
Ohio workers\u27 compensation system has been in a state of emergency for the last two years as labor and business groups battled over a series of employee-oriented Ohio Supreme Court decisions. Labor groups hailed these decisions as the vehicle which would propel Ohio\u27s workers\u27 compensation law into the twentieth century. Conversely, business groups condemned the decisions asserting that they exposed Ohio employers to infinite liability and destroyed Ohio\u27s industrial climate. S.B. 307 has changed the face of Ohio\u27s workers\u27 compensation law by revamping the definition of injury, establishing an intentional tort fund, and creating a new intoxication defense for Ohio employers. The focus of this Note is section 4123.54(B) which sets forth the skeleton of an intoxication defense for Ohio employers by barring from compensation those injuries which are proximately caused by the employee being intoxicated or under the influence of a non-prescription controlled substance. Due to the emergent nature of S.B. 307, the Ohio Legislature failed to define many of the legal standards set forth therein. After examining the historical development of the law of workers\u27 compensation and the intoxication defenses of other jurisdictions, this Note will define the burden which befalls an Ohio employer who attempts to establish that his employee was intoxicated or under the influence of a nonprescription controlled substance when injured and that such conduct was the proximate cause of the injury. The Note will also explore the methods by which an Ohio employee can rebut his employer\u27s intoxication defense
The effect of on/off indicator design on state confusion, preference, and response time performance, executive summary
Investigated are five designs of software-based ON/OFF indicators in a hypothetical Space Station Power System monitoring task. The hardware equivalent of the indicators used in the present study is the traditional indicator light that illuminates an ON label or an OFF label. Coding methods used to represent the active state were reverse video, color, frame, check, or reverse video with check. Display background color was also varied. Subjects made judgments concerning the state of indicators that resulted in very low error rates and high percentages of agreement across indicator designs. Response time measures for each of the five indicator designs did not differ significantly, although subjects reported that color was the best communicator. The impact of these results on indicator design is discussed
Characterisation of long-term climate change by dimension estimates of multivariate palaeoclimatic proxy data
International audienceThe problem of extracting climatically relevant information from multivariate geological records is tackled by characterising the eigenvalues of the temporarily varying correlation matrix. From these eigenvalues, a quantitative measure, the linear variance decay (LVD) dimension density, is derived. The LVD dimension density is shown to serve as a suitable estimate of the fractal dimension density. Its performance is evaluated by testing it for (i) systems with independent components and for (ii) subsystems of spatially extended linearly correlated systems. The LVD dimension density is applied to characterise two geological records which contain information about climate variability during the Oligocene and Miocene. These records consist of (a) abundances of different chemical trace elements and (b) grain-size distributions obtained from sediment cores offshore the East Antarctic coast. The presented analysis provides evidence that the major climate change associated with the Oligocene-Miocene transition is reflected in significant changes of the LVD dimension density. This is interpreted as a change of the interrelationships between different trace elements in the sediment and to a change of the provenance area of the deposited sediment
Characterisation of long-term climate change by dimension estimates of multivariate palaeoclimatic proxy data
The problem of extracting climatically relevant information from multivariate geological records is tackled by characterising the eigenvalues of the temporarily varying correlation matrix. From these eigenvalues, a quantitative measure, the linear variance decay (LVD) dimension density, is derived. The LVD dimension density is shown to serve as a suitable estimate of the fractal dimension density. Its performance is evaluated by testing it for (i) systems with independent components and for (ii) subsystems of spatially extended linearly correlated systems. The LVD dimension density is applied to characterise two geological records which contain information about climate variability during the Oligocene and Miocene. These records consist of (a) abundances of different chemical trace elements and (b) grain-size distributions obtained from sediment cores offshore the East Antarctic coast. The presented analysis provides evidence that the major climate change associated with the Oligocene-Miocene transition is reflected in significant changes of the LVD dimension density. This is interpreted as a change of the interrelationships between different trace elements in the sediment and to a change of the provenance area of the deposited sediment
Quasiperiodic graphs: structural design, scaling and entropic properties
A novel class of graphs, here named quasiperiodic, are constructed via
application of the Horizontal Visibility algorithm to the time series generated
along the quasiperiodic route to chaos. We show how the hierarchy of
mode-locked regions represented by the Farey tree is inherited by their
associated graphs. We are able to establish, via Renormalization Group (RG)
theory, the architecture of the quasiperiodic graphs produced by irrational
winding numbers with pure periodic continued fraction. And finally, we
demonstrate that the RG fixed-point degree distributions are recovered via
optimization of a suitably defined graph entropy
A 100 kJ Pulse Unit for Electromagnetic Forming of Large Area Sheet Metals
Magnetoforming of tube or sheet metal parts can significantly extend the range of geometries conceivable with state-of-the-art forming methods. A major advantage is the considerably higher forming speed of the process achievable by using a magnetic piston without inertia. Key for this technology is the development of reliable, long-lifetime, high current pulse power generators able to deliver tens to hundreds of kiloamps of peak current to a mainly inductive load which is highly variable in time during the forming process. A high-current, high energy pulse generator for electromagnetic forming of large area sheet metal has been developed and was taken into operation. Design criteria were reliability and safety for all possible load cases, including short circuits and short-circuiting loads under operation, at nominal peak currents of up to 200 kA and peak pulse energies of up to 100 kJ. In order to comply with the safety requirements, an all-solid-state design has been chosen using high power semiconductor switches for pulse forming instead of ignitrons or spark gaps. Due to constraints concerning space and manageability, the coupling between the load and the pulse forming unit is achieved via a semi-rigid bundle of high voltage cables, allowing an adjustment of the carrier of the forming coil while being electrically connected to each other. We report on the development of a pulse generator for peak currents of 50 kA to up to 200 kA at a pulse width of typically around 100 ”s, depending on the load parameters. In order to meet lifetime requirements suitable for industrial applications, the short circuit handling capability of peak currents of up to 450 kA is a major issue in the pulse generator design. A modular 3-branch design of parallel capacitor banks has been adopted to achieve the requirements concerning reliability, lifetime, and short circuit handling. The prototype pulse generator is based upon off-the-shelf devices, including high-current semiconductor switches. First operating results of the commissioning phase of the installation are reported
Fermi-Hubbard physics with atoms in an optical lattice
The Fermi-Hubbard model is a key concept in condensed matter physics and
provides crucial insights into electronic and magnetic properties of materials.
Yet, the intricate nature of Fermi systems poses a barrier to answer important
questions concerning d-wave superconductivity and quantum magnetism. Recently,
it has become possible to experimentally realize the Fermi-Hubbard model using
a fermionic quantum gas loaded into an optical lattice. In this atomic approach
to the Fermi-Hubbard model the Hamiltonian is a direct result of the optical
lattice potential created by interfering laser fields and short-ranged
ultracold collisions. It provides a route to simulate the physics of the
Hamiltonian and to address open questions and novel challenges of the
underlying many-body system. This review gives an overview of the current
efforts in understanding and realizing experiments with fermionic atoms in
optical lattices and discusses key experiments in the metallic,
band-insulating, superfluid and Mott-insulating regimes.Comment: Posted with permission from the Annual Review of of Condensed Matter
Physics Volume 1 \c{opyright} 2010 by Annual Reviews,
http://www.annualreviews.or
Problems in design of stroke treatment trials
Critical evaluation of the literature was use to identify remediable flaws in the design of clinical trials of stroke treatment. Trials of dexamethasone, dextran, and glycerol were reviewed. Available studies have in common major weaknesses in case selection (failure to exclude arteriolar strokes due to hemorrhage or lacunar infarction), and failure to estimate required sample size. Problems of case selection can be avoided with computerized tomography; the sample size required to show superiority of active treatment over placebo can be estimated using standard formulas. Prognostic stratification is suggested as a method of overcoming problems of unbalanced allocation. Further studies with improved design are required to evaluate the prospects for medical limitation of cerebral infarct size. © 1982 American Heart Association, Inc
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