bluuebunny/crossref_metadata_2025_split huggingface dataset:
Standardization of the satellite component of IMT‐Advanced in ITU‐R
Authors: Malaguti Nelson , Kim Sooyoung , Weinreich David 
Published: March 2015

SummaryThe International Telecommunication Union‐Radiocommunication Sector (ITU‐R) has concluded the process of developing an ITU‐R recommendation for the satellite component of the International Mobile Telecommunications Advanced radio interface(s). The set of techniques specified in the recommendation can be used to implement efficient space/terrestrial infrastructures with high degree of spectrum utilization, and it will lead to a variety of benefits that serve the public interest, including multimedia broadband service to handheld or portable terminals and public protection and disaster relief solutions. This paper presents standardization procedures and describes the technical characteristics of the satellite radio interfaces specified in the ITU‐R recommendation. Copyright © 2015 John Wiley & Sons, Ltd.
Face it, don't Facebook it: Impacts of Social Media Addiction on Mindfulness, Coping Strategies and the Consequence on Emotional Exhaustion
Authors: Sriwilai Kanokporn , Charoensukmongkol Peerayuth 
Published: March 2015

AbstractAddiction to social media has now become a problem that societies are concerned with. The aim of the present study is to investigate the impacts that social media addiction has on mindfulness and choice of coping strategy, as well as to explore the consequences on emotional exhaustion. The survey data were collected from 211 employees in 13 enterprises in Thailand. Results from partial least square structural equation modelling revealed that people who are highly addicted to social media tended to have lower mindfulness and tended to use emotion‐focused coping to deal with stress. Lack of mindfulness and the decision to use emotion‐coping strategy are also subsequently associated with higher emotional exhaustion. Copyright © 2015 John Wiley & Sons, Ltd.
Zinc(II) and Cadmium(II) Complexes of 5‐Ferrocenyl‐1H‐tetrazole: Synthesis, Structures, and Catalytic Effects on Thermal Decomposition of Energetic Compounds
Authors: Fan Xuezhong , Wang Chunyan , Li Jizhen , Zhang Guofang 
Published: March 2015

AbstractAlkyl‐substituted ferrocenes as ferrocene‐based burning rate (BR) catalysts in composite solid propellants have high migration tendency and strong volatility during processing and long‐time storage of the propellants. For developing low‐migratory alternatives, zinc(II) and cadmium(II) complexes, [Zn(phen)3](FcTz)2·9H2O (1), [Cd(phen)2(H2O)2](FcTz)2 (3), and [Cd(bpy)2(FcTz)2]·H2O (4) (bpy = 2, 2′‐bipyridine; phen = 1, 10‐phenanthroline; FcTz = 5‐ferrocenyl‐1H‐tetrazolate), derived from 5‐ferrocenyl‐1H‐tetrazole (HFcTz) were synthesized and structurally characterized. Compound 4 was also studied by density functional theory calculations (DFT). Additionally, a few single‐crystals of [Zn(phen)2(H2O)2](FcTz)2 (2) suitable for single‐crystal X‐ray diffraction formed and therefore only its crystal structure was analyzed. The cyclic voltammetry results suggested that 1, 3, and 4 are quasi‐reversible redox systems. The TG analysis showed they are of highly thermal stability when their lattice water molecules are not taken into account. Their catalytic performances for thermal decomposition of ammonium perchlorate (AP), 1, 3,5‐trinitro‐1, 3,5‐triazacyclohexane (RDX), and 1, 2,5, 7‐tetranitro‐1, 3,5, 7‐tetraazacyclooctane (HMX) were accessed by DSC/TG techniques. Their optimum contents in AP, RDX, and HMX are 5 wt‐ %, 5 wt‐ %, and 2 wt‐ %, respectively. They exhibit highly catalytic activities in thermal degradation of AP and RDX.
Synthesis, Crystal Structure, and Single‐Molecule Magnetic Properties of a Salen‐type Zn‐Dy‐Zn Complex
Authors: Shan Peng‐Yu , Li Hong‐Feng , Chen Peng , Tian Yong‐Mei , Sun Wen‐Bin , Yan Peng‐Fei 
Published: March 2015

AbstractA Salen‐type [Salen = N,N′‐ethylene bis(salicylideneimine)] mononuclear lanthanide(III)‐based Zn‐Dy‐Zn complex [Dy(ZnL)2(CH3COO)Cl2]·CH2Cl2 (1) was prepared [H2L = N,N′‐bis(3‐ethoxysalicylidene)phenylene‐1,2‐diamine]. Single‐crystal X‐ray diffraction analysis revealed that DyIII was sandwiched between the two ZnL moieties, which was coordinated by three outer OO2 atoms and four inner N2O2 atoms from two Salen‐type ligand, respectively, and an oxygen atom of acetic acid molecule completed the eight‐coordinate arrangement. The continuous‐shape‐measures (CShMs) analysis to the DyIII coordination polyhedron revealed that the coordination environment lies among the ideal spherical triangular dodecahedron (D2d) and square antiprism (D4d), respectively, but with relative large deviation parameters. The alternative current (ac) susceptibility measurements shown that it behaved as a field‐induced single‐molecule magnet with relaxation energy barrier Ueff = 19 K and τ0 = 1.5 × 10–5 s.
Analysis and evaluation of the global aerosol optical properties simulated by an online aerosol-coupled non-hydrostatic icosahedral atmospheric model
Authors: Dai Tie , Shi Guangyu , Nakajima Teruyuki 
Published: March 2015

Abstract
Aerosol optical properties are simulated using the Spectral Radiation Transport Model for Aerosol Species (SPRINTARS) coupled with the Non-hydrostatic ICosahedral Atmospheric Model (NICAM). The 3-year global mean all-sky aerosol optical thickness (AOT) at 550 nm, the Ångström Exponent (AE) based on AOTs at 440 and 870 nm, and the single scattering albedo (SSA) at 550 nm are estimated at 0.123, 0.657 and 0.944, respectively. For each aerosol species, the mean AOT is within the range of the AeroCom models. Both the modeled all-sky and clear-sky results are compared with observations from the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Aerosol Robotic Network (AERONET). The simulated spatiotemporal distributions of all-sky AOTs can generally reproduce the MODIS retrievals, and the correlation and model skill can be slightly improved using the clear-sky results over most land regions. The differences between clear-sky and all-sky AOTs are larger over polluted regions. Compared with observations from AERONET, the modeled and observed all-sky AOTs and AEs are generally in reasonable agreement, whereas the SSA variation is not well captured. Although the spatiotemporal distributions of all-sky and clear-sky results are similar, the clear-sky results are generally better correlated with the observations. The clear-sky AOT and SSA are generally lower than the all-sky results, especially in those regions where the aerosol chemical composition is contributed to mostly by sulfate aerosol. The modeled clear-sky AE is larger than the all-sky AE over those regions dominated by hydrophilic aerosol, while the opposite is found over regions dominated by hydrophobic aerosol.
User reception of a simple online multisource feedback tool for residents
Authors: Alofs Lonneke , Huiskes Jorike , Heineman Maas Jan , Buis Caroline , Horsman Manon , Van der Plank Lars , Ten Cate Olle 
Published: March 2015

Receiving feedback on daily clinical activities, in whatever form, is crucial for the development of clinical proficiency. Multisource or 360-degree feedback procedures have been recommended to include various co-workers as sources of feedback. In 2008, a web-based multisource feedback (MSF) tool for medical residents was developed at the University Medical Center Utrecht and launched nationally in the Netherlands and has been widely used since then. In 2012, an evaluation was carried out to collect opinions on its use, on the quality of the instrument and on its experienced effectiveness. We approached 408 residents and 59 residency programme directors with an anonymous online survey.
Completed surveys were received from 108 residents (26 %) and 22 programme directors (37 %). The tool was well received among the respondents and proved to be a simple, efficient and effective instrument to prepare for information-rich progress interviews of programme directors with their residents. Despite a relatively low response rate, indications were found for the effectiveness of MSF use at four levels of Kirkpatrick’s hierarchy based on user impressions: reaction, learning, behaviour change, and impact. This MSF tool, designed for effective formative feedback, was found to meet its purpose and was well received.
What is more effective: a daily or a weekly formative test?
Authors: Palmen Leonieke N. , Vorstenbosch Marc A.T.M. , Tanck Esther , Jan G.M. Kooloos Jan G.M. 
Published: March 2015

Background Exams in anatomy courses are traditionally summative. Formative testing induces retrieval practice, provides feedback and enhances learning results. We investigated the optimal frequency for retrieval practice during an anatomy course.
Method During a first-year course, students were offered four online daily quizzes a week that assessed thoracic anatomy. Once a week they received a quiz about abdominal anatomy. Students immediately received feedback afterwards. In the fourth course week, a survey about participation and satisfaction was taken. 424 students participated in the final summative exam. Trunk wall questions were used as a control. Relationship between participation and test results was investigated with a one-way ANOVA.
Results More frequent participation in formative tests was correlated to higher scores in the summative exam with no difference between daily and weekly quizzes. This effect was found for thorax-abdomen and ‘control’ trunk wall questions. Participation in weekly quizzes was higher (p < 0.001). All survey responses showed a significant difference in favour of the weekly quiz (p < 0.001).
Discussion and conclusion Participation in formative quizzes was correlated to summative exam scores. This correlation was not specific for the material tested, probably because of diligence. Student participation and preference were much higher in weekly quizzes.
Predictive value of the usual clinical signs and laboratory tests in the diagnosis of septic arthritis
Authors: Couderc Marion , Pereira Bruno , Mathieu Sylvain , Schmidt Jeannot , Lesens Olivier , Bonnet Richard , Soubrier Martin , Dubost Jean-Jacques 
Published: March 2015

AbstractObjectiveTo determine the sensitivity and specificity of clinical and laboratory signs for the diagnosis of septic arthritis (SA).Patients and methodsThis prospective study included all adult patients with suspected SA seen in the emergency department or rheumatology department at the University Hospital, Clermont-Ferrand, France, over a period of 18 months.ResultsIn total, 105 patients with suspected SA were included, 38 (36%) presenting with SA (29 [28%] with bacteriologically documented SA). In the univariate analysis, chills (p=0.015), gradual onset (p=0.04), local redness (p=0.01), as well as an entry site for infection (p=0.01) were most often identified in SA. A history of crystal-induced arthritis (p=0.004) was more frequent in non-SA cases. An erythrocyte sedimentation rate (ESR)>50 mm (p=0.005), a C-reactive protein (CRP) level >100 mg/L (p=0.019), and radiological signs suggestive of SA (p=0.001) were more frequent in the SA cases. Synovial fluid appearance: purulent (p<0.001) and clear (p=0.007), synovial white blood cell (WBC) count >50,000/μL (p < 0.001), differentiated between SA and non-SA.In multivariate analysis, only chills (odds ration [OR]=4.7, 95% confidence interval [CI] 1.3–17.1), a history of crystal-induced arthritis (OR=0.09, 95% CI 0.01–0.9), purulent appearance of the joint fluid (OR=8.4, 95% CI 2.4–28.5), synovial WBC count >50,000/mm3 (OR=6.8, 95% CI 1.3–36), and radiological findings (OR=7.1, 95% CI 13–37.9) remained significant.ConclusionNo clinical sign or laboratory test (excluding bacteriological test), taken alone, is conclusive for the differentiation between SA and non-SA, but the association of several signs, notably chills, history of crystal-induced arthritis, radiological findings, and the appearance and cellularity of joint fluid may be suggestive.
Emergency Health Care Use among Sociodemographic Groups of Children Presenting to Emergency Departments for Self-Harm in Alberta
Authors: Newton Amanda S. , Tsang Conrad I. , Rosychuk Rhonda J. 
Published: March 2015

AbstractObjectiveTo examine sociodemographic variations among children <18 years in (1) rates of self-harm visits to emergency departments (EDs) and (2) physician follow-up after the self-harm visit in Alberta.MethodsA retrospective, population-based cohort (2002–2011) of ED visits for self-harm by individuals <18 years was conducted using administrative databases from Alberta, Canada. Individuals were grouped by First Nations status or type of health care premium subsidy (family receipt of government subsidy, human services program subsidy, no subsidy received). Visits from 104 EDs were summarized by crude and directly standardized visit rates (DSVRs) per 100,000 individuals. Kaplan-Meier estimates for median estimated time to physician follow-up were calculated with 95% confidence intervals (CIs).ResultsDuring the study period, visit rates decreased with the exception of children from families receiving government-sponsored program subsidy (DSVRs 163/100,000 to 250/100,000;p=0.032). First Nations children had disproportionately fewer follow-up visits compared to other children. The median time to follow-up for First Nations children was 39 days (95% CI: 32, 48) compared to 16 days for children from families receiving no subsidy (95% CI: 14, 19), who had the shortest follow-up time after an ED visit.ConclusionsSociodemographic differences were evident in ED visit rates as well as the number of and time to physician follow-up visit. The disparities experienced by First Nations children in the follow-up period highlight an opportunity for culturally-grounded risk and needs assessment in the ED to determine and facilitate timely and appropriate follow-up care.
Assessment of Antimicrobial Utilization Metrics: Days of Therapy Versus Defined Daily Doses and Pharmacy Dispensing Records Versus Nursing Administration Data
Authors: Dalton Bruce R. , Sabuda Deana M. , Bresee Lauren C. , Conly John M. 
Published: March 2015

OBJECTIVETo compare antimicrobial utilization data derived from pharmacy dispensing records and nursing administration record data by 2 commonly used units of measure.DESIGN, PARTICIPANTS, AND METHODSData from nursing administration records and pharmacy dispensing records were obtained for 32 medical wards. From nursing and pharmacy data, defined daily doses (DDD) were calculated, and from the nursing data, days of therapy were derived. Direct comparison of total antimicrobial use was performed by graphical analysis and linear regression. Slope of trend line was used to quantify the difference between pairs of measures. Bland-Altman plots were constructed to determine constant and proportional bias. At the level of individual agents, difference between pairs of measures was calculated and presented graphically and the average (95% CI) for the difference between measures was determined.RESULTSNursing administration record–derived DDD were on average 23% lower than corresponding rates of pharmacy dispensing record–derived DDD. The difference between rates of utilization by days of therapy vs DDD from the same source (nursing) was relatively small. Results from analysis of different individual agents were highly variable with wide 95% CIs.CONCLUSIONSIn our setting, we found clinically relevant differences in antimicrobial utilization associated with data from different sources. This outweighed the importance of the metric (DDD or days of therapy). However, measurement of use of individual agents was highly variable and sensitive to both metric unit and data sources.Infect Control Hosp Epidemiol 2015;00(0): 1–7
Endoscopic Retrograde Cholangiopancreatography–Associated AmpCEscherichia coliOutbreak
Authors: Wendorf Kristen A. , Kay Meagan , Baliga Christopher , Weissman Scott J. , Gluck Michael , Verma Punam , D’Angeli Marisa , Swoveland Jennifer , Kang Mi-Gyeong , Eckmann Kaye , Ross Andrew S. , Duchin Jeffrey 
Published: March 2015

BACKGROUNDWe identified an outbreak of AmpC–producingEscherichia coliinfections resistant to third-generation cephalosporins and carbapenems (CR) among 7 patients who had undergone endoscopic retrograde cholangiopancreatography at hospital A during November 2012–August 2013. Gene sequencing revealed a shared novel mutation in ablaCMYgene and a distinctivefumC/ fimHtyping profile.OBJECTIVETo determine the extent and epidemiologic characteristics of the outbreak, identify potential sources of transmission, design and implement infection control measures, and determine the association between the CRE. coliand AmpCE. colicirculating at hospital A.METHODSWe reviewed laboratory, medical, and endoscopy reports, and endoscope reprocessing procedures. We obtained cultures from endoscopes after reprocessing as well as environmental samples and conducted pulsed-field gel electrophoresis and gene sequencing on phenotypic AmpC isolates from patients and endoscopes. Cases were those infected with phenotypic AmpC isolates (both carbapenem-susceptible and CR) and identicalblaCMY-2,fumC, andfimHalleles or related pulsed-field gel electrophoresis patterns.RESULTSThirty-five of 49 AmpCE. colitested met the case definition, including all CR isolates. All cases had complicated biliary disease and had undergone at least 1 endoscopic retrograde cholangiopancreatography at hospital A. Mortality at 30 days was 16% for all patients and 56% for CR patients. Two of 8 reprocessed endoscopic retrograde cholangiopancreatography scopes harbored AmpC that matched case isolates by pulsed-field gel electrophoresis. Environmental cultures were negative. No breaches in infection control were identified. Endoscopic reprocessing exceeded manufacturer’s recommended cleaning guidelines.CONCLUSIONRecommended reprocessing guidelines are not sufficient.Infect Control Hosp Epidemiol2015;00(0): 1–9
The effects of differing proportions of dietary macronutrients on the digestibility and post-prandial endocrine responses in domestic cats (Felis catus)
Authors: Hill S.R. , Rutherfurd-Markwick K.J. , Ravindran G. , Thomas D.G. 
Published: March 2015

SummaryThe aim of this study was to compare the effects of feeding two diets with different macronutrient proportions (high protein, low carbohydrate and low protein, high carbohydrate) on the digestibility and post-prandial endocrine responses of cats fed at maintenance levels, and to evaluate the effectiveness of the marginal ear vein prick technique for the measurement of blood glucose levels in feline studies. Two diets were fed to 16 adult domestic short-haired cats for a period of three weeks (eight cats per diet). Following a seven-day dietary adaptation period, the apparent macronutrient digestibility of the two diets was determined (days 8-19) using the total faecal collection method. The faeces were freeze dried, ground and analysed for dry matter, crude protein, crude fat and gross energy and then apparent digestibility was calculated. On days 20 and 21, the post-prandial glucose responses of the cats fed a single meal of one of the two diets were measured in serial blood samples collected using the marginal ear vein prick technique.Results showed that the high protein, low carbohydrate diet had higher (p < 0.05) apparent digestibility of dry matter, crude protein, crude fat and energy, lower (p < 0.01) daily faecal output and smaller fluctuations in blood glucose concentrations. Despite the two groups of cats having similar calorific intakes, the cats fed the high protein diet lost weight over the study period, whereas those fed the high carbohydrate, low protein diet gained weight. The marginal ear vein prick technique proved to be an effective alternative to catheterisation for blood glucose determination. The high protein diet tested in the current study, in addition to being more aligned to the cat's natural carnivorous diet, may be beneficial for weight management and blood glucose control in cats.
Preliminary evaluation of the efficacy of SteadfastTM Joint Supplement in captive exotic felids (Arabian leopard and cheetah)
Authors: Budd Jane , Dierenfeld Ellen S. , Whitehouse-Tedd Katherine 
Published: March 2015

SummaryFeline degenerative joint disease causes pain and disability and therefore represents a welfare concern for captive animals. Alternatives to traditional pharmaceutical therapies are gaining popularity and this study aimed to evaluate the efficacy of an egg-shell membrane therapy in captive cheetahs and leopards. Seven animals were treated with SteadfastTM and monitored for radiographic changes (n = 6) and lameness score (n = 7) over a 42 day period. A reduction in lameness was determined over the course of the study (p = 0.01), and improved orthopaedic status detected in 50% (3/6) of animals via radiographic examination. Surprisingly, a negative dose response was detected, whereby animals receiving lower doses exhibited the most marked changes in lameness score. Despite the small sample size and subjective scoring of lameness, this preliminary study demonstrates the need for further investigation into the use of an eggshell membrane-based supplement to improve mobility in captive felids with degenerative joint disease.
An accurate method to include lubrication forces in numerical simulations of dense Stokesian suspensions
Authors: Lefebvre-Lepot A. , Merlet B. , Nguyen T. N. 
Published: March 2015

We address the problem of computing the hydrodynamic forces and torques among $N$ solid spherical particles moving with given rotational and translational velocities in Stokes flow. We consider the original fluid–particle model without introducing new hypotheses or models. Our method includes the singular lubrication interactions which may occur when some particles come close to one another. The main new feature is that short-range interactions are propagated to the whole flow, including accurately the many-body lubrication interactions. The method builds on a pre-existing fluid solver and is flexible with respect to the choice of this solver. The error is the error generated by the fluid solver when computing non-singular flows (i.e. with negligible short-range interactions). Therefore, only a small number of degrees of freedom are required and we obtain very accurate simulations within a reasonable computational cost. Our method is closely related to a method proposed by Sangani & Mo (Phys. Fluids, vol. 6, 1994, pp. 1653–1662) but, in contrast with the latter, it does not require parameter tuning. We compare our method with the Stokesian dynamics of Durlofsky et al. (J. Fluid Mech., vol. 180, 1987, pp. 21–49) and show the higher accuracy of the former (both by analysis and by numerical experiments).