2,153 research outputs found
The Ursinus Weekly, December 3, 1909
Football number ⢠Credit due coach ⢠The scrubs ⢠Football rules discussed ⢠A review of the football season ⢠Comment ⢠Choral concert ⢠Seminary notes ⢠Personals ⢠Latin-Maths and Math-Phys meet ⢠Slonaker hurt ⢠Football managers electedhttps://digitalcommons.ursinus.edu/weekly/2817/thumbnail.jp
Towards ongoing screening for risk of violence
x, 150 leaves ; 29 cmThe intent of this project is to provide clinicians (and others providing frontline services)
with the justification and information necessary to recognize and manage the risk of
violence during service-provision. The academic literature has widely acknowledged that
mental health professionals must be able to assess risk competently. Making reference to
applicable ethical codes, this ethical responsibility is made explicit. After having
established risk assessment as a critical element of mental health service-provision, risk
assessment of violence is described paying special attention to foundational concepts and
key strategies inline with current best-practice research. It becomes clear that frequent
snapshots of acute dynamic risk factors allow for risk prediction and, more importantly,
risk reduction. Despite this conclusion, a considerable portion of clinicians use solely
clinical judgment or neglect to assess risk of violence altogether. Working towards
resolution of this problem, the writer encourages that the ongoing consideration of risk be
introduced as a mentality for clinicians. It is in this vein that a collection of variables
empirically supported to predict violence was culled from the extant literature, integrated
into a screening resource, and presented as a springboard to adopt a risk screening
mentality without delay. The preliminary draft of this screening tool, titled the T-BAR
(Time for a Brief Assessment of Risk), offers a conceptual scheme to examine clientsâ
risk of violence to others and to initiate risk management without delay. This screening
tool is not intended to quantify risk per se, but rather to bring awareness to the clientâs
general propensity to act aggressively toward others and highlight individual and
contextual risk factors suitable for intervention. While it has not been subjected to peer
evaluation, piloting, or standardization, the T-BAR is hoped to illustrate the concepts
outlined in the project, heighten the readerâs awareness of the casual nexus underlying
violent behavior, and prompt critical thinking about harm reduction. Ideas for additional
work in the field and future research are offered
Mathematical formulation of a dynamical system with dry friction subjected to external forces
We consider the response of a one-dimensional system with friction. S.W. Shaw
(Journal of Sound and Vibration, 1986) introduced the set up of different
coefficients for the static and dynamic phases (also called stick and slip
phases). He constructs a step by step solution, corresponding to an harmonic
forcing. In this paper, we show that the theory of variational inequalities
provides an elegant and synthetic approach to obtain the existence and
uniqueness of the solution, avoiding the step by step construction. We then
apply the theory to a real structure with real data and show that the model is
quite accurate. In our case, the forcing motion comes from dilatation, due to
temperature
Cooling of a mirror by radiation pressure
We describe an experiment in which a mirror is cooled by the radiation
pressure of light. A high-finesse optical cavity with a mirror coated on a
mechanical resonator is used as an optomechanical sensor of the Brownian motion
of the mirror. A feedback mechanism controls this motion via the radiation
pressure of a laser beam reflected on the mirror. We have observed either a
cooling or a heating of the mirror, depending on the gain of the feedback loop.Comment: 4 pages, 6 figures, RevTe
Von-Hippel-Lindau-Gen-Mutationstypen: Assoziation mit Genexpressionssignaturen in klarzelligen Nierenzellkarzinomen
Zusammenfassung: Fragestellung: Der Von-Hippel-Lindau- (VHL-)Tumorsuppressor ist ein multifunktionelles Protein. VHL-Mutationen treten häufig auf im klarzelligen Nierenzellkarzinom (kNZK). Verschiedene Mutationstypen fĂźhren vermutlich zu spezifischen pVHL-Funktionsveränderungen, die wiederum einen signifikanten Einfluss auf die Genexpression und schlieĂlich auf den Krankheitsverlauf haben dĂźrften. Ziel der vorliegenden Studie ist die Korrelation von Genexpressionssignaturen mit spezifischen VHL-Mutationstypen im kNZK. Methodik: Transkriptomanalyse wurde fĂźr 94 kNZK und 21 papilläre NZK (pNZK) mittels Affymetrix HG U133A Genchips durchgefĂźhrt. Alle 94 kNZK wurden auf VHL-Mutationen analysiert. Ergebnisse: Ein "hierarchical clustering" anhand der zwischen kNZK und pNZK differenziell regulierten Gene zeigt eine deutliche Stratifizierung der beiden histologischen Subtypen. 186 Gene wurden zwischen VHL-Wildtyp kNZK und kNZK mit mutiertem VHL-Gen differenziell exprimiert. Schlussfolgerung: Unsere Resultate weisen auf eine signifikante Auswirkung von VHL-Mutationen auf die Genexpression im NZK hi
Optomechanical Cooling of a Macroscopic Oscillator by Homodyne Feedback
We propose a simple optomechanical model in which a mechanical oscillator
quadrature could be "cooled" well below its equilibrium temperature by applying
a suitable feedback to drive the orthogonal quadrature by means of the homodyne
current of the radiation field used to probe its position.Comment: 9 pages, RevTeX, Figures available from authors, to appear in Phys.
Rev. Let
The importance of Southern Ocean frontal systems for the improvement of body condition in southern elephant seals
Funding: Natural Environment Research Council, Grant/Award Numbers: NE/E018289/1, NE/L501852/1 NER/D/S/2002/00426; Scottish Funding Council, Grant/Award Number: HR09011.1. As top predators, it has been suggested that southern elephant seals serve as sentinels of ecosystem status to inform management and conservation.2. This is because southern elephant seals annually undertake two largeâscale foraging migrations for 2â3 and 7â8 months to replenish resources after fasting during breeding and moulting and often rely on dynamic macroscale latitudinal fronts to provide favourable foraging through aggregating prey.3. Yet it is largely unknown whether southern elephant seals respond to changes in frontal systems over the years, whether their foraging success is associated with specific frontal systems shifts, and how flexible southern elephant seals populations are in behaviourally adapting to changes in frontal systems.4. This study examines the relationship between frontal systems and the resource acquisition of 64 southern elephant seals during four postâmoult and three postâbreeding migrations between 2005 and 2010.5. Satelliteârelayâdataâloggers provided in situ measurements concurrent with >27,500 dive profiles to define fronts and interfrontal zones between the Subtropical Frontal Zone and the Southern Boundary of the Antarctic Circumpolar Current. For >430,000 in situ measurements water mass properties could be identified.6. Generally, southern elephant seals associate more frequently with more southerly, higherâlatitude fronts/zones. Body condition improvements related to a given frontal system or water mass vary strongly according to year, season, month and sex.7. The variability in body condition improvements is higher in some frontal systems than in others, probably owing to shifts in the Subantarctic and Polar Front.8. During a migration, some individuals stay within â¤3 frontal systems, whilst others change between several frontal systems and primarily improve their body condition in upper ocean waters.9. Southern elephant seals do not trace particular water masses across frontal systems, and both surface and deep foraging strategies are used.10. This suggests that southern elephant seals do not target particular water masses but adjust foraging and movement strategies to exploit boundary areas at which mixing and prey aggregation is high.11. The large behavioural plasticity towards the spatioâtemporal variability in the different oceanographic regions they encounter could indicate resilience against environmental changes.PostprintPeer reviewe
Instruments of RT-2 Experiment onboard CORONAS-PHOTON and their test and evaluation III: Coded Aperture Mask and Fresnel Zone Plates in RT-2/CZT Payload
Imaging in hard X-rays of any astrophysical source with high angular
resolution is a challenging job. Shadow-casting technique is one of the most
viable options for imaging in hard X-rays. We have used two different types of
shadow-casters, namely, Coded Aperture Mask (CAM) and Fresnel Zone Plate (FZP)
pair and two types of pixellated solid-state detectors, namely, CZT and CMOS in
RT-2/CZT payload, the hard X-ray imaging instrument onboard the CORONAS-PHOTON
satellite. In this paper, we present the results of simulations with different
combinations of coders (CAM & FZP) and detectors that are employed in the
RT-2/CZT payload. We discuss the possibility of detecting transient Solar
flares with good angular resolution for various combinations. Simulated results
are compared with laboratory experiments to verify the consistency of the
designed configuration.Comment: 27 pages, 16 figures, Accepted for publication in Experimental
Astronomy (in press
Human population growth offsets climate-driven increase in woody vegetation in sub-Saharan Africa
The rapidly growing human population in sub-Saharan Africa generates increasing demand for agricultural land and forest products, which presumably leads to deforestation. Conversely, a greening of African drylands has been reported, but this has been difficult to associate with changes in woody vegetation. There is thus an incomplete understanding of how woody vegetation responds to socio-economic and environmental change. Here we used a passive microwave Earth observation data set to document two different trends in land area with woody cover for 1992-2011: 36% of the land area (6,870,000 km2) had an increase in woody cover largely in drylands, and 11% had a decrease (2,150,000 km2), mostly in humid zones. Increases in woody cover were associated with low population growth, and were driven by increases in CO2 in the humid zones and by increases in precipitation in drylands, whereas decreases in woody cover were associated with high population growth. The spatially distinct pattern of these opposing trends reflects, first, the natural response of vegetation to precipitation and atmospheric CO2, and second, deforestation in humid areas, minor in size but important for ecosystem services, such as biodiversity and carbon stocks. This nuanced picture of changes in woody cover challenges widely held views of a general and ongoing reduction of the woody vegetation in Africa
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