487 research outputs found
Empowering Catering Sales Managers with Pricing Authority
In the hotel business, catering sales managers often encounter potential clients who expect to negotiate for items such as room rental fees, audiovisual charges, and bartending fees. This article addresses both the advantages and disadvantages of empowering sales managers with the authority to reduce or waive these charges. Thus, hoteliers are advised to extend a structured yield management mindset into the hotel’s function-space area
Unresolved Unidentified Source Contribution to the Gamma-ray Background
The large majority of EGRET point sources remain without an identified
low-energy counterpart, and a large fraction of these sources are most likely
extragalactic. Whatever the nature of the extragalactic EGRET unidentified
sources, faint unresolved objects of the same class must have a contribution to
the diffuse extragalactic gamma-ray background (EGRB). Understanding this
component of the EGRB, along with other guaranteed contributions from known
sources, is essential if we are to use this emission to constrain exotic
high-energy physics. Here, we follow an empirical approach to estimate whether
a potential contribution of unidentified sources to the EGRB is likely to be
important, and we find that it is. Additionally, we show how upcoming GLAST
observations of EGRET unidentified sources, as well as of their fainter
counterparts, can be combined with GLAST observations of the Galactic and
extragalactic diffuse backgrounds to shed light on the nature of the EGRET
unidentified sources even without any positional association of such sources
with low-energy counterparts.Comment: 11 pages, 5 figures, submitted to Ap
Factors influencing the uptake of cardiac rehabilitation by cardiac patients with a comorbidity of stroke
Job satisfaction for campus recreation professionals within NIRSA institutions
An international investigation was conducted to determine the overall job satisfaction of college campus recreation employees who are members of the National Intramural Recreational Sports Association (NIRSA). Demographic information was gathered to provide statistical analysis based on (a) region; (b) size of school; (c) private versus public; (d) four-year versus two-year schools; (e) rural, suburban, and urban location; (f) years in the profession; and (g) reporting structure. The following work related areas were examined to determine if NIRSA members were satisfied with their job environment: (a) personal/individual satisfaction, (b) staffing and organizational structure, (c) financial support, (d) salary and professional development, (e) department and individual expectations, (f) campus recreation facilities, and (g) campus collaboration and communication. The study found that overall the respondents indicated they were satisfied with their job situation/ environment with greater satisfaction being shown by those with loftier job titles when compared with those with lesser job titles. Differences in job satisfaction were noted in terms of (a) supervisor’s expectations of them, salary, and hours worked (based on amount of experience); (b) salary (based on title held); (c) budget allocation (based on reporting structure); and (d) a desire to leave their present position/ job (in terms of job title held, experience/length of service and reporting structure)
Anisotropies in the gamma-ray sky from millisecond pulsars
Pulsars emerge in the Fermi era as a sizable population of gamma-ray sources. Millisecond
pulsars (MSPs) constitute an older subpopulation whose sky distribution extends to high
Galactic latitudes, and it has been suggested that unresolved members of this class may
contribute a significant fraction of the measured large-scale isotropic gamma-ray background
(IGRB). We investigate the possible energy-dependent contribution of unresolved MSPs to
the anisotropy of the Fermi-measured IGRB. For observationally motivated MSP population
models, we show that the preliminary Fermi anisotropy measurement places an interesting
constraint on the abundance of MSPs in the Galaxy and the typical MSP flux, about an order of
magnitude stronger than constraints on this population derived from the intensity of the IGRB
alone. We also examine the possibility of an MSP component in the IGRB mimicking a dark
matter signal in anisotropy-based searches, and conclude that the energy dependence of an
anisotropy signature would distinguish MSPs from all but very light dark matter candidates
Gamma-ray signatures of annihilation to charged leptons in dark matter substructure
Due to their higher concentrations and small internal velocities, Milky Way
subhalos can be at least as important as the smooth halo in accounting for the
GeV positron excess via dark matter annihilation. After showing how this can be
achieved in various scenarios, including in Sommerfeld models, we demonstrate
that, in this case, the diffuse inverse-Compton emission resulting from
electrons and positrons produced in substructure leads to a nearly-isotropic
signal close to the level of the isotropic GeV gamma-ray background seen by
Fermi. Moreover, we show that HESS cosmic-ray electron measurements can be used
to constrain multi-TeV internal bremsstrahlung gamma rays arising from
annihilation to charged leptons.Comment: 8 pages, 4 figures; minor updates to match published versio
Fermi-LAT Sensitivity to Dark Matter Annihilation in Via Lactea II Substructure
We present a study of the ability of the Fermi Gamma-ray Space Telescope to
detect dark-matter annihilation signals from the Galactic subhalos predicted by
the Via Lactea II N-body simulation. We implement an improved formalism for
estimating the boost factor needed to account for the effect of dark-matter
clumping on scales below the resolution of the simulation, and we incorporate a
detailed Monte Carlo simulation of the response of the Fermi-LAT telescope,
including a simulation of its all-sky observing mode integrated over a ten year
mission. We find that for WIMP masses up to about 150 GeV in standard
supersymmetric models with velocity-averaged cross section 3*10^-26 cm^3 s^-1,
a few subhalos could be detectable with >5 standard deviations significance and
would likely deviate significantly from the appearance of a point source.Comment: 16 pages, 6 figure
Selected Risk Management Policies, Practices, and Procedures for Intramural Activities at NIRSA Institutions
A survey of all National Intramural-Recreational Sports Association (NIRSA) campus recreation directors was conducted to determine the risk management policies, practices, and procedures relating to intramural activities and recreational sports at colleges and universities throughout North America. The survey instrument, in its final form, addressed practices, policies, and procedures of campus recreation directors through 44 questions relating to the following areas: (a) documentation, (b) medical factors, (c) rules and regulations, (d) physical supervision, (e) sportsmanship rating systems, (f) restrictive policies, (g) safety devices, (h) officials-tests-qualifications, and (i) background experiences and training of the respondents. Selected data are presented in terms of (a) the size of institutions (small, medium, and large), (b) location of the institution (rural, urban, and suburban), and (c) whether public or privately supported
Club Sport Legal Liability Practices at NIRSA Institutions
Current legal practices in collegiate club sport programs were studied. A 23-item questionnaire consisting primarily of close-ended questions was mailed to 563 campus recreation directors representing all six National Intramural-Recreational Sports Association (NIRSA) regions. Data obtained showed that mean club sport budgets ranged from 135,657 in Region 6, with an overall mean of $69,138 across all regions. Signing a waiver before participating was required by 91 % of the directors. Lack of consistency in waiver language and font size was reported. Only 9% of campus recreation directors always require that an institutional employee travel with a club sport team. The most frequent modes of approved travel for club sport participants were students driving personal cars (94%), renting vans from outside vendors (95%), and the use of private transportation such as a chartered bus (70%). Paid coaches were used by 15% of the directors
Circulating Levels of Persistent Organic Pollutants (POPs) and Carotid Atherosclerosis in the Elderly
Background and objective: Increased circulating levels of persistent organic pollutants (POPs) have been associated with myocardial infarction. Because myocardial infarction is an atherosclerotic disease, we investigated, in a cross-sectional study, whether POP levels are related to atherosclerosis
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