bluuebunny/crossref_metadata_2025_split huggingface dataset:
Contribution of personal and environmental factors on positive psychological functioning in adolescents
Authors: Fadda Daniela , Scalas L. Francesca , Meleddu Mauro 
Published: June 2015

ABSTRACTThis study examined self‐esteem as mediator in the relations of personal (extraversion, neuroticism) and environmental (maternal, paternal, peer‐relationships) variables with domains of positive psychological functioning (PPF) in adolescence (Satisfaction with life, Mastery, Vigor, Social Interest, Social Cheerfulness).We compared one‐sided and multidimensional models using a sample of 1193 high school students (592 males and 601 females). We examined variations in adolescent PPF as a function of parenting styles via independent examination of maternal and paternal bonding. Results supported the multidimensional models, which indicated direct effects of personality traits, maternal care and peer relationships, as well as indirect effects, mediated by self‐esteem, of all predictors on most PPF dimensions.Overall, our study provided a broader picture of personal and environmental predictors on different dimensions of PPF, which supported the mediating role of self‐esteem and emphasized the importance of considering multidimensional models to characterize PPF in adolescents.
Snatching Hope from the Jaws of Epistemic Defeat
Authors: PASNAU ROBERT 
Published: June 2015

ABSTRACT:Reflection on the history of skepticism shows that philosophers have often conjoined as a single doctrine various theses that are best kept apart. Some of these theses are incredible—literally almost impossible to accept—whereas others seem quite plausible and even verge on the platitudinous. Mixing them together, one arrives at a view—skepticism—that is as a whole indefensible. My aim is to pull these different elements apart and focus on one particular strand of skepticism that deserves sustained and respectful attention, which I will refer to as epistemic defeatism. Roughly, in its most global form, this is the view that, in the final analysis, we have no good evidence for the truth of any proposition. I do not attempt to argue for the truth of epistemic defeatism, but only to untangle it from neighboring views and in particular to establish its independence from questions about knowledge. Having thus established the view's autonomy, I turn to considering the options for self-consciously accepting defeat. One may despair or one may have faith. But I will ultimately propose that the most attractive option—the option that preserves the most of our epistemic integrity—is to have hope.
The Real Challenge to Photography (as Communicative Representational Art)
Authors: HOPKINS ROBERT 
Published: June 2015

ABSTRACT:I argue that authentic photography is not able to develop to the full as a communicative representational art. Photography is authentic when it is true to its self-image as the imprinting of images. For an image to be imprinted is for its content to be linked to the scene in which it originates by a chain of sufficient, mind-independent causes. Communicative representational art (in any medium: photography, painting, literature, music, etc.) is art that exploits the resources of representation to achieve artistically interesting communication of thought. The central resources of representation are content, vehicle properties, and the interplay between these two. Whereas painting and other representational arts are able to exploit all three to communicate thought, authentic photography can exploit interplay only to a very limited degree. However, the exploitation of interplay is the culmination of communicative representational art: the natural endpoint in its development.
Truth and Truthmakers in Early Modern Scholasticism
Authors: EMBRY BRIAN 
Published: June 2015

ABSTRACT:Seventeenth-century Iberian and Italian Scholastics had a concept of a truthmaker (verificativum) similar to that found in contemporary metaphysical debates. I argue that the seventeenth-century notion of a truthmaker can be illuminated by a prevalent seventeenth-century theory of truth according to which the truth of a proposition is the mereological sum of that proposition and its intentional object. I explain this theory of truth and then spell out the account of truthmaking it entails.
PATHS AND INDICES OF MAXIMAL TAIL DEPENDENCE
Authors: Furman Edward , Su Jianxi , Zitikis Ričardas 
Published: June 2015

AbstractWe demonstrate both analytically and numerically that the existing methods for measuring tail dependence in copulas may sometimes underestimate the extent of extreme co-movements of dependent risks and, therefore, may not always comply with the new paradigm of prudent risk management. This phenomenon holds in the context of both symmetric and asymmetric copulas with and without singularities. As a remedy, we introduce a notion of paths of maximal (tail) dependence and utilize the notion to propose several new indices of tail dependence. The suggested new indices are conservative, conform with the basic concepts of modern quantitative risk management, and are capable of differentiating between distinct risky positions in situations when the existing indices fail to do so.
MODELING DEPENDENCE BETWEEN LOSS TRIANGLES WITH HIERARCHICAL ARCHIMEDEAN COPULAS
Authors: Abdallah Anas , Boucher Jean-Philippe , Cossette Hélène 
Published: June 2015

AbstractOne of the most critical problems in property/casualty insurance is to determine an appropriate reserve for incurred but unpaid losses. These provisions generally comprise most of the liabilities of a non-life insurance company. The global provisions are often determined under an assumption of independence between the lines of business. Recently, Shi and Frees (2011) proposed to put dependence between lines of business with a copula that captures dependence between two cells of two different runoff triangles. In this paper, we propose to generalize this model in two steps. First, by using an idea proposed by Barnett and Zehnwirth (1998), we will suppose a dependence between all the observations that belong to the same calendar year (CY) for each line of business. Thereafter, we will then suppose another dependence structure that links the CYs of different lines of business. This model is done by using hierarchical Archimedean copulas. We show that the model provides more flexibility than existing models, and offers a better, more realistic and more intuitive interpretation of the dependence between the lines of business. For illustration, the model is applied to a dataset from a major US property-casualty insurer, where a bootstrap method is proposed to estimate the distribution of the reserve.
Impact of Family Medicine Resident Physicians on Emergency Department Wait Times and Patients Leaving Without Being Seen
Authors: Xi Wang , Dalal Vikram 
Published: June 2015

AbstractObjectiveTo quantify the effect of family medicine resident physicians on emergency department (ED) wait times and patients leaving without being seen or treated.MethodsIn a medium-volume community ED over twelve months, we used retrospective chart review to compare wait times between patients seen during shifts where staff were working alone versus with a resident. We measured the time from initial triage time to physician initial assessment (T1) and disposition time (LOS), and number of patients leaving without being seen or treated.ResultsIn our analysis, 21,141 patients (91% of total visits) were included; 48% were in the staff-with-resident group, and 52% were in the staff-only group. Mean T1 in the resident group was significantly shorter than the staff-only group (1 hour 23 minutes versus 1 hour 38 minutes, difference 15 minutes, 95% CI 13 to 17 minutes, p<0.001). Mean total LOS in the resident group was also reduced (2 hours 38 minutes versus 2 hours 50 minutes, difference 12 minutes, 95% CI 8 to 17 minutes, p<0.001). Fewer patients left without being seen in the resident group than the staff only group (2.8% versus 4.9%, p<0.001). There were no differences in patients leaving without being treated (0.5% versus 0.5%).ConclusionsThis is the first study to demonstrate that residents are associated with a reduction in ED wait times and patients leaving without being seen in a low-acuity, community hospital, compared to previous studies demonstrating no difference or increased wait times.
Establishing the feasibility of assessing the mental health of children displaced by the Syrian conflict
Authors: Cartwright K. , El-Khani A. , Subryan A. , Calam R. 
Published: June 2015

Background.In the humanitarian crisis context of conflict zones, collecting data is essential for identifying and addressing the mental health needs of refugee children to avoid mass suffering. This study tested the feasibility of recruiting refugees caring for children and using established and brief parent-report questionnaires in a challenging context to collect mental health data on refugee children displaced by Syria's conflict.Methods.Caregivers of 4–10-year olds attending primary schools run by non-governmental organisation (NGO) Generation Freedom in and near refugee camps on the Syrian–Turkish border were invited to complete the Pediatric Emotional Distress Scale (PEDS) and Strengths and Difficulties Questionnaire (SDQ).Results.It was possible to reach 144 adult refugees caring for children with research participation information and use informed consent procedures. A total of 106 caregivers completed the questionnaires yielding a good return rate (74%). Eighty-two (77.4%) caregivers had complete data on the PEDS and 61 (57.5%) on the SDQ. Almost half (49%) of the children met the clinical cut-off for being anxious/withdrawn and 62% for being fearful rated using the PEDS and 45% for SDQ rated emotional symptoms. More than a third had clinical levels of behavioural problems on both scales.Conclusions.It proved feasible to collect child mental health data in challenging conditions in the context of the Syrian crisis with support from a local NGO providing humanitarian assistance. The PEDS performed better than the SDQ in this context. High levels of emotional distress and behavioural problems in children reiterate the urgent need for evidence-based psychosocial support.
Self-sustained hydrodynamic oscillations in lifted jet diffusion flames: origin and control
Authors: Qadri Ubaid Ali , Chandler Gary J. , Juniper Matthew P. 
Published: June 2015

We use direct numerical simulation (DNS) of the Navier–Stokes equations in the low-Mach-number limit to investigate the hydrodynamic instability of a lifted jet diffusion flame. We obtain steady solutions for flames using a finite rate reaction chemistry, and perform a linear global stability analysis around these steady flames. We calculate the direct and adjoint global modes and use these to identify the regions of the flow that are responsible for causing oscillations in lifted jet diffusion flames, and to identify how passive control strategies might be used to control these oscillations. We also apply a local stability analysis to identify the instability mechanisms that are active. We find that two axisymmetric modes are responsible for the oscillations. The first is a high-frequency mode with wavemaker in the jet shear layer in the premixing zone. The second is a low-frequency mode with wavemaker in the outer part of the shear layer in the flame. We find that both of these modes are most sensitive to feedback involving perturbations to the density and axial momentum. Using the local stability analysis, we find that the high-frequency mode is caused by a resonant mode in the premixing region, and that the low-frequency mode is caused by a region of local absolute instability in the flame, not by the interaction between resonant modes, as proposed in Nichols et al. (Phys. Fluids, vol. 21, 2009, article 015110). Our linear analysis shows that passive control of the low-frequency mode may be feasible because regions up to three diameters away from the fuel jet are moderately sensitive to steady control forces.
EUNAVFOR OPERATION ATALANTA OFF SOMALIA: THE EU IN UNCHARTERED LEGAL WATERS?
Authors: Papastavridis Efthymios 
Published: June 2015

AbstractEUNAVFOR Operation Atalanta has been the first maritime operation of the European Union and it has certainly been successful given the significant decrease of pirate attacks off the Somali coast. However, various issues have been raised concerning its legal basis under international law and its legal framework, including questions of responsibility. These issues are particularly interesting since the EU has a more integrated legal order than other organizations involved in such operations (eg UN, NATO). The present article attempts to address these issues against the background of international and European law. Even though the legal basis of the Operation is clear from a European law perspective, there have been certain misconceptions concerning the legal basis of the Operation under international law. The delineation of the Operation's legal framework requires a careful analysis of the rules applicable to each of its phases and of its addressees, since each phase is subject to different rules which are binding on different actors. Finally, there is an extensive discussion of questions of responsibility, which were heavily influenced by the applicable Rules of Engagement and of the actual conduct of the Operation. The conclusion is that, at least on the high seas, responsibility should primarily rest with the flag States rather than with the EU. However, in most cases the EU is indirectly responsible for violations of international law, except in cases where suspected pirates are transferred to third States pursuant to EU agreements with such States, in which case it bears primarily responsibility.
p16 status and interval neck dissection findings after a ‘clinically complete response’ to chemoradiotherapy in oropharyngeal squamous cell carcinoma
Authors: Miah M S , Spielmann P , White S J , Kennedy C , Kernohan N , Mountain R E , Cassasola R , Mahendran S 
Published: June 2015

AbstractObjectives:To evaluate the histopathological findings from post-treatment neck dissection of p16 positive and negative oropharyngeal carcinoma cases, after completion of chemoradiotherapy, and to question the role of neck dissection after a ‘clinically complete response’ to chemoradiotherapy.Methods:Data were collected retrospectively from a cohort of patients treated with curative intent using chemoradiotherapy and post-treatment neck dissection. Primary tumours underwent p16 immunohistochemistry. Neck dissection specimens were examined for viable cancer cells.Results:A total of 76 cases were assessed. Viable cancer cells were detected from neck dissection in 29 per cent of p16 negative cases. Locoregional recurrence occurred in 12.9 per cent of p16 negative cases. The association between p16 positivity in the primary tumour and histopathologically negative neck dissection was significant (p< 0.05).Conclusion:p16 status appeared to be an independent marker of disease control for the cohort in this study. The data raise questions about the role of post-treatment neck dissection in p16 positive cases with a ‘clinically complete response’ to chemoradiotherapy.
Asynchrony in host and parasite phenology may decrease disease risk in livestock under climate warming:Nematodirus battusin lambs as a case study
Authors: GETHINGS OWEN J. , ROSE HANNAH , MITCHELL SIÂN , VAN DIJK JAN , MORGAN ERIC R. 
Published: June 2015

SUMMARYMismatch in the phenology of trophically linked species as a result of climate warming has been shown to have far-reaching effects on animal communities, but implications for disease have so far received limited attention. This paper presents evidence suggestive of phenological asynchrony in a host-parasite system arising from climate change, with impacts on transmission. Diagnostic laboratory data on outbreaks of infection with the pathogenic nematodeNematodirus battusin sheep flocks in the UK were used to validate region-specific models of the effect of spring temperature on parasite transmission. The hatching of parasite eggs to produce infective larvae is driven by temperature, while the availability of susceptible hosts depends on lambing date, which is relatively insensitive to inter-annual variation in spring temperature. In southern areas and in warmer years, earlier emergence of infective larvae in spring was predicted, with decline through mortality before peak availability of susceptible lambs. Data confirmed model predictions, with fewer outbreaks recorded in those years and regions. Overlap between larval peaks and lamb availability was not reduced in northern areas, which experienced no decreases in the number of reported outbreaks. Results suggest that phenological asynchrony arising from climate warming may affect parasite transmission, with non-linear but predictable impacts on disease burden. Improved understanding of complex responses of host-parasite systems to climate change can contribute to effective adaptation of parasite control strategies.
Intensive Milling Practices in the Romano-British Landscape of Southern England: Using Newly Established Criteria for Distinguishing Millstones from Rotary Querns
Authors: Shaffrey Ruth 
Published: June 2015

AbstractThis paper investigates how common intensive milling practices were in southern England during the Romano-British period, by analysing the distribution of millstones, based on an extensive corpus of almost 4,500 querns and millstones compiled by the author. In order to do this, it was necessary to establish criteria for distinguishing millstones from rotary querns, the details of which are set out in an accompanying appendix; this is something which has hitherto not been published. Using the guidelines thereby defined, the distribution of millstones is considered and described by stone type. The resulting data are then used to discuss the following key points: How frequently did mills occur? What types of mills were in use, and when? What were those mills used for?
Forward kinematics modeling of spatial parallel linkage mechanisms based on constraint equations and the numerical solving method
Authors: Gao Liyang , Wu Weiguo 
Published: June 2015

SUMMARYIn order to solve general kinematics modeling problems and numerical stability problems of numerical methods for spatial parallel linkage mechanisms, a general modeling method and its numerical solving algorithm is proposed. According to the need for avoiding direct singular configurations, valid joint variable space and valid forward kinematics solutions (VKSs) are defined. Taking numerical convergence near singular points into account, the pseudo-arc length homotopy continuation algorithm is given to solve the kinematics model. Finally as an example, the joint variable space of the general Stewart platform mechanism is analyzed, which is proved to be divided into subspaces by direct singular surfaces. And then, forward kinematics solutions of 200 testing points are solved separately using the pseudo-arc length homotopy continuation algorithm, the Newton homotopy continuation algorithm and the Newton–Raphson algorithm (NRA). Comparison of the results shows that the proposed method is convergent to the same solution branch with the initial configuration on all the testing points, while the other two algorithms skip to other solution branches on some near singular testing points.
An epidemiological study of paediatric pulmonary hypertension in Turkey
Authors: Pektas Ayhan , Pektas Bilgehan M. , Kula Serdar 
Published: June 2015

AbstractObjectiveThe present study aims to evaluate the epidemiological characteristics of paediatric pulmonary hypertension within the entire Turkish population over a period of 5 years using the registry of the National Health Insurance System.MethodsAll individuals aged <18 years who were admitted to a Turkish hospital for the first time between 2009 and 2013 with a discharge diagnosis of idiopathic pulmonary hypertension and secondary pulmonary hypertension were identified.ResultsThe overall annual incidence of idiopathic pulmonary hypertension during childhood was 11.7 cases/million, whereas the overall annual incidence of secondary pulmonary hypertension during childhood was 9.5 cases/million. There was a gradual and significant increase in the annual incidence of idiopathic pulmonary hypertension and that of secondary pulmonary hypertension during the 5-year study period (p=0.001 for both). In the years 2012 and 2013, idiopathic pulmonary hypertension was significantly more frequent in children aged <2 years when compared with children aged above 2 years (p=0.002 for both). The male to female ratio was 1.2:1 for idiopathic pulmonary hypertension, whereas the female to male ratio was 1.1:1 for secondary pulmonary hypertension during childhood.ConclusionThe incidence of paediatric pulmonary hypertension in Turkey is higher than those reported for the Western populations. Moreover, no female dominance could be observed. These discrepancies may be attributed to the differences in the study design, study cohort, timing of the study, and the definitions adopted for pulmonary hypertension classification.
Percutaneous pulmonary valve implantation with the Venus P-valve: clinical experience and early results
Authors: Promphan Worakan , Prachasilchai Pimpak , Siripornpitak Suvipaporn , Qureshi Shakeel A. , Layangool Thanarat 
Published: June 2015

AbstractBackgroundAt present, the exclusion for percutaneous pulmonary valve implantation for free pulmonary regurgitation after tetralogy of Fallot repair includes an unfavourably large right ventricular outflow tract.ObjectiveTo report feasibility and early experience with a recently developed transcatheter heart valve, Venus P-valveTM, implanted in six patients with severe pulmonary regurgitation with large right ventricular outflow tracts.PatientsThere were two female patients and four male patients. The median age of the patients was 18.5 years, and the mean body weight was 53.8 kg. All the patients were in NYHA class II and had severe pulmonary regurgitation after previous transannular patch repair of tetralogy of Fallot. The median time after the last surgical operation was 13.5 years.ResultsThe Venus P-valveTM was successfully implanted in all the patients with implanted valve diameters ranging from 24 to 32 mm. The mean fluoroscopy time was 29.8 minutes. None of the patients had significant outflow tract gradient or pulmonary regurgitation immediately after valve implantation. Only one patient had unexpected mild proximal valve migration to the right ventricular body during withdrawal of the delivery system. It caused mild paravalvar leak and significant tricuspid regurgitation. At 6 months follow-up, the median of right ventricular end-diastolic volume indices decreased from 146 to 108 ml/m2 (p-value=0.046). The Doppler systolic peak gradient across the valve ranged from 4 to 40 mmHg, and there was no evidence of stent fracture on fluoroscopy or structural valve failure.ConclusionThe Venus P-valveTM can be implanted successfully and effectively in patients with severe pulmonary regurgitation and a large right ventricular outflow tract. The early results with this valve are encouraging.