933 research outputs found
BUSINESS CYCLE AND LONG-TERM DEBT: EFFECTS ON HOTEL OPERATING LEASE
Over the last 25 years, many hotel operators have chosen to lease their property instead of owning as a financing strategy. This paper examines the combined and separate contributions of business cycles and a firmâs level of long-term debt on hotel owner/operator use of operating leases. The results indicate that operating leases were used more often during contracting business cycles and less often during cycles of expansion. According to the results, operating leases and long-term debt are not complementary, although they are increasingly treated as complements when the economy suffers a downturn
The Mobility Enterprise - Improving Auto Productivity
The Mobility Enterprise is a particular version of a shared vehicle fleet, aimed at solving the problem of low automobile productivity. The automobile consumes a large portion of Americaâs transportation energy supply. It also operates much of the time with unused capacity: vacant seats and empty cargo space. Since programs to fill those vacant seats âride sharing and high occupancy vehicle incentives âhave fallen so far short of their objectives, a new approach is warranted. The enterpriseâs central concept is matching vehicle attributes to travel needs. Generally, a household purchases vehicles for those few trips that require a large capacity, rather than for the majority of trips (usually to work) that have minimal vehicular needs. If a household could tailor its âimmediate accessâ fleet to these frequent trips and still retain reasonable access to larger-capacity special purpose vehicles (SPVâs), considerable economies could be achieved. The household is relieved of owning seldom-used excess capacity, and automobile productivity and efficiency are greatly improved. Having easy access to a shared fleet of SPVâs also affords a household an increase in the quality and economy of its travel experiences. This paper describes a research project recently begun at Purdue that involves a comprehensive investigation of the Mobility Enterprise concept. Questions of institutional barriers, consumer response, and organization and management are discussed here as keys to the fate of the enterprise in the transportation climate of the foreseeable future
Donating breastmilk: Regulated and unregulated practices: A review of the ethical issues
Breastmilk is the optimal source of nutrition for babies although there are a range of situations in which breastfeeding is difficult, including prematurity. Human milk is donated in the UK in both regulated and unregulated ways. A network of human milk banks receive and distribute donor milk, primarily to premature and sick infants, supported by NICE guidance (NICE, 2010) and the UK Association for Milk Banking (UKAMB). Variations in the geographical spread and funding of the banks mean that women who want to donate or receive breastmilk are not always able to do so. Discourse around the ethics of the provision and use of human milk in this way often emphasises issues of risk and safety.There are also ways in which breastmilk is donated informally, often using the terminology of âsharingâ, usually to full-term infants. Some women feed each otherâs babies via friendship groups whilst others contact each other using online (often international) networks specifically set up for the purpose of peer-to-peer human milk sharing. Health bodies in a number of countries (although not in the UK) have issued warnings against obtaining breastmilk in this way, focussing again on âdangerâ and âriskâ and drawing on limited research evidence (Keim et al, 2013; Stuebe et al., 2014, cited in Palmquist and Doehler, 2014). In the UK the issues were raised in a recent BMJ editorial (Steele et al, 2015). Other researchers have compared the risk of sharing breastmilk with the (known) risks of formula feeding (Gribble and Hausman, 2012).These topics have been the subject of a range of academic papers as well as online discussions, raising questions about the ethical issues and obligations in both regulated and unregulated practices of milk donation. These include the nature of donation and whether donors and recipients are viewed differently according to the mode of donation (milk bank vs. milk sharing; donating vs. selling) and the situation of the recipient. Is the ethics of âgivingâ a body product different when the product is human milk rather than blood or organs? Is this an area which should remain unregulated, as a private practice, or should it be more widely or formally considered? In addition there are a range of Issues relating to the perception of human milk â as both âwhite/liquid goldâ and âmatter out of placeâ (Douglas, 1966) â which draw on ideas of cultural unease about womenâs bodily fluids. Milk for use in milk banks is depersonalised but there is unease about sharing intimate bodily fluids with known/unknown others. The focus here is on informal milk sharing â why and how it happens (the lived experience of donors and recipients) and how both donation and risk are framed and accounted for. What is known is mostly from the US and Australia; women who use websites for milk sharing talk about âinformed choiceâ. Where they examine all the available evidence, share information about milk collection and storage and gather knowledge about the donor (e.g. is the donor breastfeeding her own baby?). Health professionals and non-professionals working with pregnant and lactating women may be asked for advice and need to consider these issues. My conclusion is that breastmilk donation differs from other forms of donation in important ways; donating and sharing breastmilk has increased in prevalence and possibilities but the scale and scope of informal milk sharing in the UK is unknown. Many opportunities to donate and receive breastmilk have arisen in grassroots woman-to-woman ways (in a similar way to other forms of parenting and breastfeeding support). Ideas of risk frame the âofficialâ reaction to sharing breastmilk via the internet (but not in the UK) and little is known about how individual women understand and make sense of these risks
Microrollers Flow Uphill as Granular Media
Pour sand into a container and only the grains near the top surface move. The
collective motion associated with the translational and rotational energy of
the grains in a thin flowing layer is quickly dissipated as friction through
multibody interactions. Alternatively, consider what will happen to a bed of
particles if one applies a torque to each individual particle. In this paper,
we demonstrate an experimental system where torque is applied at the
constituent level through a rotating magnetic field in a dense bed of
microrollers. The net result is the grains roll uphill, forming a heap with a
negative angle of repose. Two different regimes have been identified related to
the degree of mobility or fluidization of the particles in the bulk.
Velocimetry of the near surface flowing layer reveals the collective motion of
these responsive particles scales in a similar way to flowing bulk granular
flows. A simple granular model that includes cohesion accurately predicts the
apparent negative coefficient of friction. In contrast to the response of
active or responsive particles that mimic thermodynamic principles, this system
results in macroscopic collective behavior that has the kinematics of a purely
dissipative granular system
Neurophysiological correlates of excitement in men with recent-onset psychosis
Objective: Right frontal function, as indicated by the N200 component of the event-related potential during target detection, has previously been associated with excitement (excitement, impulsivity, hostility, uncooperativeness) in men with a long-term diagnosis of schizophrenia. The current study investigated excitement in relation to N200 in men who had recently experienced their first episode of psychosis.
Subjects and methods: Twenty men who had recently suffered their first psychotic episode underwent a clinical interview and auditory oddball task.
Results: Multiple linear regression analysis showed that 58% of the variance in the excitement symptom cluster was explained by a positive association with frontal midline N200 amplitude and an inverse association with right frontal N200 amplitude. The latter was not apparent in the initial correlation, suggesting suppression by the midline activity. These associations were not explained by drug use, medication or negative symptoms. However, the correlation between excitement and midline N200 was stronger in drug users, and that between right frontal N200 and excitement was stronger in nonusers.
Conclusion: Findings support the independent contributions to excitement of mechanisms reflected in midline and right frontal N200 amplitude respectively during the early stages of psychosis
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