bluuebunny/crossref_metadata_2025_split huggingface dataset:
Why are the oldest old less generous? Explanations for the unexpected age-related drop in charitable giving
Authors: WIEPKING PAMALA , JAMES RUSSELL N. 
Published: March 2012

ABSTRACTPrevious research has demonstrated that the generally positive relationship between age and the presence of charitable giving becomes negative at the oldest ages. We investigate potential causes of this drop in charitable giving among the oldest old including changes in health, cognition, egocentric networks, religious attendance, and substitution of charitable bequest planning. A longitudinal analysis of data from the United States Health and Retirement Survey indicates that the drop in charitable giving is mediated largely by changes in the frequency of church attendance, with only modest influences from changes in health and cognition.
Multi-Constellation GNSS Performance Evaluation for Urban Canyons Using Large Virtual Reality City Models
Authors: Wang Lei , Groves Paul D , Ziebart Marek K 
Published: March 2012

Positioning using the Global Positioning System (GPS) is unreliable in dense urban areas with tall buildings and/or narrow streets, known as ‘urban canyons’. This is because the buildings block, reflect or diffract the signals from many of the satellites. This paper investigates the use of 3-Dimensional (3-D) building models to predict satellite visibility. To predict Global Navigation Satellite System (GNSS) performance using 3-D building models, a simulation has been developed. A few optimized methods to improve the efficiency of the simulation for real-time purposes were implemented. Diffraction effects of satellite signals were considered to improve accuracy. The simulation is validated using real-world GPS and GLObal NAvigation Satellite System (GLONASS) observations.The performance of current and future GNSS in urban canyons is then assessed by simulation using an architectural city model of London with decimetre-level accuracy. GNSS availability, integrity and precision is evaluated over pedestrian and vehicle routes within city canyons using different combinations of GNSS constellations. The results show that using GPS and GLONASS together cannot guarantee 24-hour reliable positioning in urban canyons. However, with the addition of Galileo and Compass, currently under construction, reliable GNSS performance can be obtained at most, but not all, of the locations in the test scenarios. The modelling also demonstrates that GNSS availability is poorer for pedestrians than for vehicles and verifies that cross-street positioning errors are typically larger than along-street due to the geometrical constraints imposed by the buildings. For many applications, this modelling technique could also be used to predict the best route through a city at a given time, or the best time to perform GNSS positioning at a given location.
Prevalence and population structure of Staphylococcus aureus nasal carriage in healthcare workers in a general population. The Tromsø Staph and Skin Study
Authors: OLSEN K. , SANGVIK M. , SIMONSEN G. S. , SOLLID J. U. E. , SUNDSFJORD A. , THUNE I. , FURBERG A.-S. 
Published: March 2012

SUMMARYHealthcare workers (HCWs) may be a reservoir for Staphylococcus aureus transmission to patients. We examined whether HCW status is associated with S. aureus nasal carriage and population structure (spa types) in 1302 women (334 HCWs) and 977 men (71 HCWs) aged 30–69 years participating in the population-based Tromsø Study in 2007–2008. Multivariable logistic regression models were used. While no methicillin-resistant S. aureus (MRSA) was isolated, overall, 26·2% of HCWs and 26·0% of non-HCWs were S. aureus nasal carriers. For women overall and women residing with children, the odds ratios for nasal carriage were 1·54 [95% confidence interval (CI) 1·09–2·19] and 1·86 (95% CI 1·14–3·04), respectively, in HCWs compared to non-HCWs. Moreover, HCWs vs. non-HCWs had a 2·17 and 3·16 times higher risk of spa types t012 and t015, respectively. This supports the view that HCWs have an increased risk of S. aureus nasal carriage depending on gender, family status and spa type.
Set Families With a Forbidden Induced Subposet
Authors: BOEHNLEIN EDWARD , JIANG TAO 
Published: March 2012

For each posetHwhose Hasse diagram is a tree of heightk, we show that the largest size of a familyof subsets of [n]={1,. . .,n} not containingHas an induced subposet is asymptotic to$(k - 1)(\scriptsize{\begin{array}{c}{n}\\[-1.5pt] {\fl{n/2}} \end{array}})$. This extends a result of Bukh [1], which in turn generalizes several known results including Sperner's theorem.
Tornado Hazard Communication Disparities among Spanish-Speaking Individuals in an English-Speaking Community
Authors: Ahlborn Leslie , Franc Jeffrey Michael , Med D Sport 
Published: March 2012

AbstractBackground: The state of Oklahoma, known for destructive tornados, has a native Spanish-speaking (NSS) population of approximately 180,241, of which 50% report being able to speak English “very well” (US Census Bureau). With almost 50% of these native Spanish-speaking persons being limited English proficient (LEP), their reception of tornado hazard communications may be restricted. This study conducted in northeast Oklahoma (USA) evaluates the association between native language and receiving tornado hazard communications.Methods: This study was a cross-sectional survey conducted among a convenience sample of NSS and native English-speaking (NES) adults at Xavier Clinic and St. Francis Trauma Emergency Center in Tulsa, OK, USA from September 2009 through December 2009. Of the 82 surveys administered, 80 were returned, with 40 NES and 40 NSS participants. A scoring system (Severe Weather Information Reception (SWIR)) was developed to quantify reception of hazard information among the study participants (1–3 points = poor reception, 4–5 = adequate reception, 6–8 = excellent reception). Pearson’s chi-squared test was used to calculate differences between groups with Yates’ continuity correction applied where appropriate, and SWIR scores were analyzed using ANOVA. P-values <.05 were considered significant.Results: NSS fluency in English was 25.6%. No significant association was found between native language and those who watch television, listen to radio, have a National Oceanic and Atmospheric Administration (NOAA) All Hazards radio or telephone, or are in audible range of a tornado siren. NSS were less likely to have Internet access (P < .004), and less likely to know of local telephone warning programs (P < .03). The mean NSS SWIR score was 3.2 (95% CI, 2.8-3.7) while LEP NSS averaged 2.8 (95% CI, 2.4-3.2). The mean NES SWIR score was 4.5 (95% CI, 4.1-5.0).Conclusion: Results demonstrate a disparity in tornado warning reception between NSS and NES. Poor English proficiency was noted to be 75% among NSS, which is approximately 25% more than estimated by the US Census Bureau. This study demonstrates a need for emergency managers to recognize when appropriate and overcome communication disparities among limited English proficient populations.
Protection against Cold in Prehospital Care: Evaporative Heat Loss Reduction by Wet Clothing Removal or the Addition of a Vapor Barrier—A Thermal Manikin Study
Authors: Henriksson Otto , Lundgren Peter , Kuklane Kalev , Holmér Ingvar , Naredi Peter , Bjornstig Ulf 
Published: March 2012

AbstractIntroduction: In the prehospital care of a cold and wet person, early application of adequate insulation is of utmost importance to reduce cold stress, limit body core cooling, and prevent deterioration of the patient’s condition. Most prehospital guidelines on protection against cold recommend the removal of wet clothing prior to insulation, and some also recommend the use of a waterproof vapor barrier to reduce evaporative heat loss. However, there is little scientific evidence of the effectiveness of these measures.Objective: Using a thermal manikin with wet clothing, this study was conducted to determine the effect of wet clothing removal or the addition of a vapor barrier on thermal insulation and evaporative heat loss using different amounts of insulation in both warm and cold ambient conditions.Methods: A thermal manikin dressed in wet clothing was set up in accordance with the European Standard for assessing requirements of sleeping bags, modified for wet heat loss determination, and the climatic chamber was set to -15 degrees Celsius (°C) for cold conditions and +10°C for warm conditions. Three different insulation ensembles, one, two or seven woollen blankets, were chosen to provide different levels of insulation. Five different test conditions were evaluated for all three levels of insulation ensembles: (1) dry underwear; (2) dry underwear with a vapor barrier; (3) wet underwear; (4) wet underwear with a vapor barrier; and (5) no underwear. Dry and wet heat loss and thermal resistance were determined from continuous monitoring of ambient air temperature, manikin surface temperature, heat flux and evaporative mass loss rate.Results: Independent of insulation thickness or ambient temperature, the removal of wet clothing or the addition of a vapor barrier resulted in a reduction in total heat loss of 19-42%. The absolute heat loss reduction was greater, however, and thus clinically more important in cold environments when little insulation is available. A similar reduction in total heat loss was also achieved by increasing the insulation from one to two blankets or from two to seven blankets.Conclusion: Wet clothing removal or the addition of a vapor barrier effectively reduced evaporative heat loss and might thus be of great importance in prehospital rescue scenarios in cold environments with limited insulation available, such as in mass-casualty situations or during protracted evacuations in harsh conditions.
Nutritional quality and acceptability of a weekly vegetarian lunch in primary-school canteens in Ghent, Belgium: ‘Thursday Veggie Day’
Authors: De Keyzer Willem , Van Caneghem Sven , Heath Anne-Louise M , Vanaelst Barbara , Verschraegen Mia , De Henauw Stefaan , Huybrechts Inge 
Published: March 2012

AbstractObjectivesTo determine the nutritional adequacy and acceptability to children of vegetarian lunches served on ‘Thursday Veggie Day’ – a public health initiative in Ghent (Belgium) primary schools.DesignA comparison of food leftovers from main courses on regular days and Thursdays was made using a visual plate waste method. The nutritional value of the vegetarian meat analogue and meat components of main courses served on five ‘Thursday Veggie Days’ and five comparable conventional main courses was evaluated using three criteria (maximum 30 % of energy from fat, maximum of one-third of fat as saturated fat and minimum 1·5 g of dietary fibre per 420 kJ).SettingTwo canteens from primary schools in Ghent, Belgium, participating in the ‘Thursday Veggie Day’ campaign.SubjectsPrimary-school children aged between 6 and 12 years.ResultsIn total, 1242 and 472 main course plate waste observations of conventional and vegetarian menus, respectively, were evaluated. There was no significant difference in plate waste between vegetarian (16·7 %) and conventional (17·3 %) main courses. Overall, the five vegetarian components were found to be nutritionally adequate with a mean score of 2·2 out of 3, compared with 0·4 for the meat component. However, three of the vegetarian components provided >30 % of energy from fat and, in one, the amount of saturated fat exceeded one-third of total fat.ConclusionsVegetarian canteen meals offered as part of ‘Thursday Veggie Day’ appear to be nutritionally appropriate and as acceptable as conventional main courses to children in primary schools in Ghent.
Variety in fruit and vegetable consumption and 10-year incidence of CHD and stroke
Authors: Oude Griep Linda M , Verschuren WM Monique , Kromhout Daan , Ocké Marga C , Geleijnse Johanna M 
Published: March 2012

AbstractObjectiveConsuming a variety of fruit and vegetables provides many different micronutrients and bioactive compounds. Whether this contributes to the beneficial association between fruit and vegetables and incident CHD and stroke is unknown.DesignProspective population-based cohort study.SettingThe Netherlands.SubjectsMen and women (n 20 069) aged 20–65 years. Participants completed a validated 178-item FFQ, including nine fruit and thirteen vegetable items. Variety in fruit and vegetables was defined as the sum of different items consumed at least once per 2 weeks over the previous year. Hazard ratios (HR) for variety in relation to incident CHD and stroke were calculated using multivariable Cox proportional hazards models additionally adjusted for quantity of fruit and vegetables.ResultsVariety and quantity in fruit and vegetables were highly correlated (r = 0·81). Variety was not associated with total energy intake (r = −0·01) and positively associated with nutrient intakes, particularly vitamin C (r = 0·70). During 10 years of follow-up, 245 cases of CHD and 233 cases of stroke occurred. Variety in vegetables (HR per 2 items = 1·05; 95 % CI 0·94, 1·17) and in fruit (HR per 2 items = 1·00; 95 % CI 0·87, 1·15) were not related to incident CHD. Variety in vegetables (HR per 2 items = 0·93; 95 % CI 0·83, 1·04) and in fruit (HR per 2 items = 1·03; 95 % CI 0·89, 1·18) were also not related to incident stroke.ConclusionsMore variety in fruit and vegetable consumption was associated with higher intakes of fruit and vegetables and micronutrients. Independently of quantity, variety in fruit and vegetables was related neither to incident CHD nor to incident stroke.
Vitamin A intake and infection are associated with plasma retinol among pre-school children in rural Zambia
Authors: Hotz Christine , Chileshe Justin , Siamusantu Ward , Palaniappan Uma , Kafwembe Emmanuel 
Published: March 2012

AbstractObjectiveTo determine the prevalence of vitamin A deficiency, infection and adequacy of vitamin A intakes among Zambian children, and the contribution of dietary vitamin A and infection to vitamin A status.DesignA cross-sectional survey of vitamin A intakes by the 24 h recall method, vitamin A status by plasma retinol and the modified relative dose-response test, and infection by acute-phase proteins.SettingRural communities in Central and Eastern Provinces of Zambia.SubjectsChildren 2–5 years of age.ResultsThe prevalence of vitamin A deficiency was 56 % by plasma retinol, 48 % with infection-adjusted plasma retinol and 22 % by the modified relative dose-response test. The majority of children (61 %) had a current infection. Vitamin A intakes were relatively high (331 to 585 μg retinol activity equivalents/d in the harvest/early post-harvest and late post-harvest seasons, respectively) and the prevalence of inadequate intakes was <1 % when compared with the Estimated Average Requirement (210 and 275 μg retinol activity equivalents/d for children aged 1–3 and 4–8 years, respectively). Elevated α-1-acid glycoprotein was negatively associated with plasma retinol (P< 0·0 0 1) and vitamin A intake was positively associated with plasma retinol (P< 0·05), but only when estimated assuming a 26:1 retinol equivalence for provitamin A from green and yellow vegetables.ConclusionsInfection and vitamin A intakes were significant determinants of plasma retinol. We cannot conclude which indicator more accurately represents the true vitamin A status of the population. Reasons for the persistent high prevalence of vitamin A deficiency in the presence of adequate vitamin A intakes are unclear, but the high rates of infection may play a role.
Neuroprotective effects of chronic exposure of SH-SY5Y to low lithium concentration involve glycolysis stimulation, extracellular pyruvate accumulation and resistance to oxidative stress
Authors: Nciri Riadh , Desmoulin Frank , Allagui Mohamed Saleh , Murat Jean-Claude , Feki Abdelfattah El , Vincent Christian , Croute Françoise 
Published: March 2012

AbstractRecent studies suggest that lithium protects neurons from death induced by a wide array of neurotoxic insults, stimulates neurogenesis and could be used to prevent age-related neurodegenerative diseases. In this study, SH-SY5Y human neuronal cells were cultured in the absence (Con) or in the presence (Li+) of a low lithium concentration (0.5 mm Li2CO3, i.e. 1 mm lithium ion) for 25–50 wk. In the course of treatment, growth rate of Con and Li+ cells was regularly analysed using Alamar Blue dye. Resistance to oxidative stress was investigated by evaluating: (1) the adverse effects of high concentrations of lithium (4–8 mm) or glutamate (20–90 mm) on cell growth rate; (2) the levels of lipid peroxidation (TBARS) and total glutathione; (3) the expression levels of the anti-apoptotic Bcl-2 protein. In addition, glucose metabolism was investigated by analysing selected metabolites in culture media and cell extracts by 1H-NMR spectroscopy. As compared to Con, Li+ cells multiplied faster and were more resistant to stress, as evidenced by a lower dose-dependent decrease of Alamar Blue reduction and dose-dependent increase of TBARS levels induced by toxic doses of lithium and glutamate. Total glutathione content and Bcl-2 level were increased in Li+ cells. Glucose consumption and glycolytic activity were enhanced in Li+ cells and an important release of pyruvate was observed. We conclude that chronic exposure to lithium induces adaptive changes in metabolism of SH-SY5Y cells involving a higher cell growth rate and a better resistance to oxidative stress.
Development and implementation of a palliative care consultation tool
Authors: Trout Alexei , Kirsh Kenneth L. , Peppin John F. 
Published: March 2012

AbstractObjective:Palliative care services are becoming more commonplace in hospitals and have the potential to reduce hospital costs through length of stay reduction and remediation of symptoms. However, there has been little systematic attempt to identify when a palliative care consultation should be triggered in a hospital, and there is some evidence that these services are under-utilized and not fully understood.Method:In an initial attempt to address when a consultation might be appropriate, we attempted to pilot test a novel palliative care screening tool to help guide clinician judgment in this regard. A one-page, face-valid instrument was developed using expert opinion.Results:The sample comprised 33 men (44.6%) and 41 women (55.4%) with an average age of 63.4 years (SD = 13.8) and an average length of stay of 22.7 days (SD = 10.1). The most significant symptom was pain, indicated as moderate-to-severe in 23 patients (31%). This was followed by fatigue (n = 10, 13.5%) and nausea (n = 6, 8.1%). At unit entry, 20 patients (33%) had moderate or severe pain. Upon discharge, this number had been reduced to 12/60 (20%). Chi-Square analysis showed a significant decrease in pain rankings overall (χ2 = 36.3, p < 0.0001). The average total tool score was 7.5 (SD = 3.1). Using an initial threshold of 12 to trigger a palliative care referral, 64 patients (86.5%) would not have received a referral and 10 (13.5%) would have. Of these 10 patients, 2 (20%) did not receive a palliative care consultation while they were hospitalized.Significance of results:The tool we developed increased consultations over the time period in which it was used, compared with the same time period 1 year prior. Although the threshold developed for triggering referrals seemed artificially high, the implementation of the screening tool did increase referrals.
The advanced cancer patient experience of undertaking meaning and purpose (MaP) therapy
Authors: Lethborg Carrie , Schofield Penelope , Kissane David 
Published: March 2012

AbstractObjective:The objective of this study was to describe the experience of undertaking meaning and purpose (MaP) therapy for patients with advanced cancer, with an aim of refining therapeutic processes involved prior to pilot testing. Specifically, we were interested in examining the themes arising from participation in the intervention in relation to our therapeutic goals, and how acceptable both the number of sessions and processes used were.Method:A convenience sample of people living with advanced cancer was recruited to participate in this process, resulting in 24 therapy sessions for analysis.Results:A thematic analysis of each session illustrated that theprocessof MaP therapy is one that encourages reflection, offers insights, and can be confrontational, but can also allow participants to “shift” their perspective and focus onto meaningful goals. Results illustrate how the therapist creates a therapeutic frame that holds up a poignant portrayal of the meaning of life lived, and mirrors this to the patient, such that they grasp its rich texture. Participants' descriptions showed how they were buoyed forward as a result, with renewed vigor and enthusiasm, despite their illness and any physical restrictions that it imposed.Significance of results:A planned pilot test of this intervention will enable us to determine potential effect sizes of this therapy in reducing distress and increasing meaning prior to a full randomized controlled trial. Understanding the processes involved and the experiences of participation in meaning-based therapies is crucial to the future strength of this area of psychotherapy.
What precipitates depression in African-American cancer patients? Triggers and stressors
Authors: Zhang Amy Y. , Gary Faye , Zhu Hui 
Published: March 2012

AbstractObjective:This study examined general and cancer-related stressors of depression that are unique to African-American cancer patients.Method:The study used cohort design and mixed methods. Seventy-four breast and prostate cancer survivors including 34 depressed and 23 non-depressed African-Americans and 17 depressed whites were interviewed. Qualitative data analysis identified themes. The thematic codes were converted to a SPSS data set numerically. The Fisher's exact test was performed to examine group differences in the experience of stress.Results:Significantly more depressed African-Americans experienced a dramatic reaction to a cancer diagnosis (p = 0.03) or had concerns about functional decline (p = 0.01), arguments with relatives or friends (p = 0.02), and unemployment status (p = 0.03) than did non-depressed African-Americans, who reacted to the cancer diagnosis as a matter of reality (p = 0.02). Significantly more depressed African-Americans talked about feeling shocked by a cancer diagnosis (p = 0.04) and being unable to do things that they used to do (p = 0.02) than did depressed whites. Qualitative analysis shed light on the extent of such group differences.Significance of results:Distress from the initial cancer diagnosis and functional decline were likely to have triggered or worsened depression in African-American cancer patients. This study highlighted racial differences in this aspect. It is critical to screen African-American cancer patients for depression at two critical junctures: immediately after the disclosure of a cancer diagnosis and at the onset of functional decline. This will enhance the chance of prompt diagnosis and treatment of depression in this underserved population.
Psychiatric aspects of chronic palliative care: Waiting for death
Authors: Sirois François 
Published: March 2012

AbstractThis article emphasizes the shifting paradigm of palliative care from cancer patients to vital organ failure in chronic diseases. It offers a view about a type of palliative care for patients reaching the pre-terminal phase of a chronic illness. Unlike cancer patients, time is not as sharply delineated and physical pain is not a major factor, but psychological distress is often a major component of the clinical condition. Starting from the perspective of a psychiatric consultant on medical and surgical wards, I present short clinical vignettes to introduce a discussion about psychological manifestations in patients with chronic vital organ failure. The objective is to help patients find meaning to the last stage of their life. To that effect, four key sensitive areas are presented for clinicians to assess end-of-life coping: pressure on character organization, the management of hope, mourning problems, and ill health as a screen for psychological distress.