bluuebunny/crossref_metadata_2025_split huggingface dataset:
“On solid ground”: Family and school connectedness promotes adolescents' future orientation
Authors: Crespo Carla , Jose Paul E. , Kielpikowski Magdalena , Pryor Jan 
Published: August 2013

ABSTRACTThe present study investigated the role of connectedness to the family and school contexts on future orientation of New Zealand adolescents. Participants were 1774 young people (51.9% female) aged between 9 and 16 years at time 1 of the study, who reported their connectedness to family and school and their perceptions of future orientation at three times of measurement one year apart. Structural equation modelling was used to test the combined role of family and school connectedness on future orientation over time. Findings supported a multiple mediation model in that adolescents' connectedness to family and school predicted more positive perceptions of future orientation both directly and indirectly via the effect of the context variables on each other.
Elevated bilirubin after acute ischemic stroke linked to the stroke severity
Authors: Luo Yun , Li Jingwei , Zhang Junfeng , Xu Yun 
Published: August 2013

AbstractBackgroundOur previous study demonstrated that the level of serum bilirubin after acute ischemic stroke (AIS) was correlated to the severity of stroke, also there has the evidence of hyperbilirubinemia prevalent in AIS. We aimed to identify the exact change of bilirubin in the early phase of AIS, and study if this kind of change linked to the severity of stroke.MethodsBilirubin and other biochemical indexes were measured in 608 AIS patients and 188 transient ischemic attack (TIA) patients which set as the control group. National Institutes of Health Stroke Scale (NIHSS) scores were assessed simultaneously with blood collection. First, the level of bilirubin and its distribution were compared between the AIS and control group. According to a cut‐off point, we next analyzed the impacted factors of elevated bilirubin including the direct bilirubin (Dbil) and total bilirubin (Tbil), especially the correlation between elevated bilirubin and the severity of stroke. Finally, we compared the difference of concentration and percent of elevated bilirubin among the Oxford Community Stroke Project (OCSP) subtypes.ResultsThe level of serum Dbil and Tbil was significantly higher in the AIS group than that in the TIA group. Different distribution was observed between the two groups, which manifested as the percent of low bilirubin level group was lower while high level group was higher in AIS than that in TIA, the p value were 0.043 and 0.078 in Dbil and Tbil, respectively. When the cut‐off point of elevated bilirubin was selected as Dbil ≥ 6.84 μmol/L and Tbil ≥ 22.2 μmol/L, we found that both NIHSS score and relative severity of AIS were significantly associated with elevated bilirubin whenever in Dbil or Tbil, so did the OCSP subtypes. This trend was still maintained by multivariable logistic regression analysis adjust for relative influence factors. In regard of OCSP subtypes, the highest level of bilirubin was found in TACI, so did the highest rate of elevated bilirubin.ConclusionThe serum levels of Dbil and Tbil were increased after AIS, which linked to the severity of stroke.
A group based smoking cessation pilot programme for community mental health clients in Sydney
Authors: Devine Erin , Khan Raquiba Jahan , Bedford Karen , Jiang Wei Zhuang , Lim Henry 
Published: August 2013

Introduction: This article describes the process and evaluation of a smoking cessation support programme for mental health clients in Sydney.Aim: The objective of the study was to assess a group-based smoking cessation support model for community mental health clients.Methods: Two community mental health services participated; 29 clients received free NRT products and weekly education for 12 weeks on: effects of smoking, nicotine dependence, NRT use, withdrawal process and the benefits of quitting. Evaluation included face-to-face interviews, telephone or postal survey using a semi-structured questionnaire.Results: The baseline (n = 29) and follow-up (n = 14) surveys showed reduction in the number of cigarettes (30 to 21) smoked a day (55% vs. 36%). At one month 47% (n = 19) were confident about stopping smoking permanently whereas 19% (n = 14) reported the same after six months. Participants reported concerns of health effects, illness, physical symptoms (77% n = 27) and financial cost (93% n = 27) were the motivating factors in quitting. None of the findings was statistically significant.Conclusions: Community based interventions to address the rate of smoking in this group is needed. Financial and health benefits can be used as motivating factors, and integration of smoking cessation assistance in treatment and rehabilitation of mental health consumers would be useful.
Commentary: Measuring the shape of degree distributions
Authors: BADHAM JENNIFER M. 
Published: August 2013

AbstractDegree distribution is a fundamental property of networks. While mean degree provides a standard measure of scale, there are several commonly used shape measures. Widespread use of a single shape measure would enable comparisons between networks and facilitate investigations about the relationship between degree distribution properties and other network features. This paper describes five candidate measures of heterogeneity and recommends the Gini coefficient. It has theoretical advantages over many of the previously proposed measures, is meaningful for the broad range of distribution shapes seen in different types of networks, and has several accessible interpretations. While this paper focuses on degree, the distribution of other node-based network properties could also be described with Gini coefficients.
Colonialism and Its Unruly?—The Colonial State and Kuki Raids in Nineteenth Century Northeast India
Authors: GUITE JANGKHOMANG 
Published: August 2013

AbstractThis paper examines the colonial representation of tribal raids in the Northeast frontier of India and argues that, rather than being the ‘lawless and predatory habits of the savage hill tribes’, it was an expression of hill politics. The Kukis raided British territory when they discovered that an extension of the colonial boundary threatened their very existence as an independent state-evading population. It traces how the Kukis re-ethnicized themselves in the hills by evolving a system that is state-repellent, protected by a vast strip of forested jungle around their settlements commonly known as the ‘hunting ground’. It locates the ‘raid’ in the context of the difference in the perception of space and territoriality between the colonial state and indigenous polities. Colonial spatial ideology and its hill-valley binary are seen to play a vital role in animating tension on the frontier. The raid is thus understood as the ultimate weapon of resistance against an established state by an independent ‘not-a-state-subject’ people in defence of their autonomy and essentially represents non-state practices against state appropriations. Instead of being ‘unruly’, the raid is seen as a form of organized and premeditated resistance based on the consciousness of the hillmen's lived world order.
Dog ownership, dog behaviour and transmission of Echinococcus spp. in the Alay Valley, southern Kyrgyzstan
Authors: VAN KESTEREN FREYA , MASTIN ALEXANDER , MYTYNOVA BERMET , ZIADINOV ISKENDER , BOUFANA BELGEES , TORGERSON PAUL R. , ROGAN MICHAEL T. , CRAIG PHILIP S. 
Published: August 2013

SUMMARYEchinococcosis is a re-emerging zoonotic disease in Kyrgyzstan, and the incidence of human infection has increased substantially since the collapse of the Soviet Union in 1991. Domestic dogs are hosts of Echinococcus spp. and play an important role in the transmission of these parasites. The demography, ecology and behaviour of dogs are therefore relevant in studying Echinococcus spp. transmission. Dog demographics, roles of dogs, dog movements and faecal environmental contamination were assessed in four rural communities in the Alay Valley, southern Kyrgyzstan. Arecoline purge data revealed for the first time that E. granulosus, E. canadensis and E. multilocularis were present in domestic dogs in the Alay Valley. Surveys revealed that many households had dogs and that dogs played various roles in the communities, as pets, guard dogs or sheep dogs. Almost all dogs were free to roam, and GPS data revealed that many moved outside their communities, thus being able to scavenge offal and consume rodents. Faecal environmental contamination was high, presenting a significant infection risk to the local communities.
Screening strategies to identify new chemical diversity for drug development to treat kinetoplastid infections
Authors: DON ROB , IOSET JEAN-ROBERT 
Published: August 2013

SUMMARYThe Drugs for Neglected Diseasesinitiative(DNDi) has defined and implemented an early discovery strategy over the last few years, in fitting with its virtual R&D business model. This strategy relies on a medium- to high-throughput phenotypic assay platform to expedite the screening of compound libraries accessed through its collaborations with partners from the pharmaceutical industry. We review the pragmatic approaches used to select compound libraries for screening against kinetoplastids, taking into account screening capacity. The advantages, limitations and current achievements in identifying new quality series for further development into preclinical candidates are critically discussed, together with attractive new approaches currently under investigation.
“We act like girls and we don't act like men”: Ethnicity and local language change in a Philadelphia high school
Authors: Wagner Suzanne Evans 
Published: August 2013

AbstractHow is ethnicity indexed linguistically in a speech community in which immigrant L2s have typically not been spoken for three or more generations? Drawing on recordings and ethnographic observations of eighteen white high school girls in south Philadelphia, speakers of Irish descent are shown to differentiate themselves from speakers of Italian descent through their use of (ay0), that is, Canadian Raising. (ay0) is an ongoing sound change in Philadelphia and is remarkable for being a rare example of a male-led change. Irish girls exploit more male-like, backed, and raised variants as a resource for indexing their ethnic identity, which is associated locally with stereotypically masculine characteristics such as toughness. The symbolic reflection of ethnic affiliation through this subtle linguistic device makes use of both local and supralocal social meanings. (Ethnicity, adolescence, Philadelphia, Irish, Canadian Raising, gender, sound change, language, and identity)*
Social class and gender impacting change in bilingual settings: Spanish subject pronoun use in New York
Authors: Shin Naomi Lapidus , Otheguy Ricardo 
Published: August 2013

AbstractThis study examines the role of social class and gender in an ongoing change in Spanish spoken in New York City (NYC). The change, which has to do with increasing use of Spanish subject pronouns, is correlated with increased exposure to life in NYC and to English. Our investigation of six different national-origin groups shows a connection between affluence and change: the most affluent Latino groups undergo the most increase in pronoun use, while the least affluent undergo no change. This pattern is explained as further indication that resistance to linguistic change is more pronounced in poorer communities as a result of denser social networks. In addition we find a women effect: immigrant women lead men in the increasing use of pronouns. We argue that the women effect in bilingual settings warrants a reevaluation of existing explanations of women as leaders of linguistic change. (Language change, social class, gender, bilingualism, Spanish in the US, pronouns)*
Ion acceleration and plasma jets driven by a high intensity laser beam normally incident on thin foils
Authors: Shoucri Magdi , Matte Jean-Pierre , Vidal François 
Published: August 2013

AbstractWe study the problem of the radiation pressure acceleration of ions and the formation of plasma jets, driven by a high-intensity circularly polarized laser beam normally incident on thin plasma targets. We use an Eulerian Vlasov code to solve the one-dimensional relativistic Vlasov-Maxwell equations for both electrons and ions. We consider the case of a high density plasma with n/ncr = 100, where ncr is the critical density. Three cases are studied with different target thicknesses, to investigate the physical processes involved when decreasing the target thickness from several electron skin depths down to the order of one skin depth. The results show a more important acceleration of the ions when the thickness is decreased. Although we observe in all cases a neutral plasma jet ejected from the back of the target, the evolution of the system which leads to the formation of this neutral plasma jet is different in the three cases considered. In each case, this evolution will be studied in details. Also, a leak or ejection of electrons from the back of the target is observed in the thinnest case treated (thickness of the order of the skin depth), before the formation of the neutral plasma jet, a regime called leaky light sail radiation pressure acceleration. The absence of noise in the Eulerian Vlasov code allows an accurate representation of the phase-space structures of the distribution functions.
Robust push recovery by whole-body dynamics control with extremal accelerations
Authors: Chen Xuechao , Huang Qiang , Yu Zhangguo , Lu Yuepin 
Published: August 2013

SUMMARYThis paper presents a whole-body dynamics controller for robust push recovery on a force-controlled bipedal robot. Featherstone's spatial vector method is used to deduce dynamics formulas. We reveal a relationship between the accelerations of the floating base and the desired external forces needed for those accelerations. Introducing constraints on the desired external forces causes corresponding constraints on the accelerations. Quadratic programming is applied to find the extremal accelerations, which recover the robot from pushes as best as possible. A robustness criterion is proposed based on the linear inverted pendulum model to evaluate the performance of push recovery methods quantitatively. We evaluate four typical push recovery methods and the results show that our method is more robust than these. The effectiveness of the proposed method is demonstrated by push recovery in simulations.
Questioning photostasis
Authors: CUNEA ALEXANDER , BEGUM RANA , REINISCH DIETER , JEFFERY GLEN 
Published: August 2013

AbstractPhotostasis is a phenomenon where the photoreceptor outer segment (OS) length and its rhodopsin content vary depending on environmental lighting. When light is reduced for extended periods, it is argued that OS lengthen and its rhodopsin concentration rises to increase photon capture in darker environment. Increases in OS length may occur because the retinal pigment epithelium (RPE) cells reduce OS consumption in prolonged darkness. But sample sizes in assessing changes in OS length have been small, and results highly varied with no statistical analysis ever offered. Further, animals used were often albinos, which have abnormal RPE cells. Here we keep pigmented and albino mice for 21 days in darkness and compare OS length with those in a normal 12:12 light/dark environment. We measured approximately 1300 OS but found no statistically significant difference in their lengths between light and dark groups in either pigmentation phenotype, although there was a small trend in the data favoring OS extension in the dark. Given that earlier studies were undertaken on limited samples with no statistical analysis, our data pose serious questions for the notion of mammalian photostasis in terms of significant OS plasticity.
The Effect of Heat Waves on Ambulance Attendances in Brisbane, Australia
Authors: Turner Lyle R. , Connell Des , Tong Shilu 
Published: August 2013

AbstractIntroductionHeat waves have significant impacts on mortality and morbidity. However, little is known regarding effects on pre-admission health outcomes such as ambulance attendances, particularly in subtropical regions.ProblemThis study investigated both main temperature effects and the added effects of heat waves on ambulance attendances in Brisbane, a subtropical city in Australia.MethodsDaily data relating to 783,935 ambulance attendances, along with data on meteorological variables and air pollutants, were collected for the period 2000-2007. Ambient temperature (main) effects were assessed using a distributed lag nonlinear approach that accounted for delayed effects of temperature, while added heat wave effects were incorporated separately using a local heat wave definition. Effect estimates were obtained for total, cardiovascular and respiratory attendances, and different age groups.ResultsMain effects of temperature were found for total attendances, which increased by 50.6% (95% CI, 32.3%-71.4%) for a 9.5°C increase above a reference temperature of 29°C. An added heat wave effect on total attendances was observed (18.8%; 95% CI, 6.5%-32.5%). Significant effects were found for both respiratory and cardiovascular attendances, particularly for those aged 65 and above.ConclusionAmbulance attendances can be significantly impacted by sustained periods of high temperatures, and are a valid source of early detection of the effects of extreme temperatures on the population. The planning of ambulance services may need to be adapted as a consequence of increasing numbers of heat waves in the future. Ambulance attendance data also should be utilized in the development of heat warning systems and climate change adaptation strategies.TurnerLR,ConnellD,TongS.The effect of heat waves on ambulance attendances in Brisbane, Australia.Prehosp Disaster Med.2013;28(5):1-6.
Dark-Field Imaging of Thin Specimens with a Forescatter Electron Detector at Low Accelerating Voltage
Authors: Brodusch Nicolas , Demers Hendrix , Gauvin Raynald 
Published: August 2013

AbstractA forescatter electron detector (FSED) was used to acquire dark-field micrographs (DF-FSED) on thin specimens with a scanning electron microscope. The collection angles were adjusted with the detector distance from the beam axis, which is similar to the camera length of the scanning transmission electron microscope annular DF detectors. The DF-FSED imaging resolution was calculated with SMART-J on an aluminum alloy and carbon nanotubes (CNTs) decorated with platinum nanoparticles. The resolution was three to six times worse than with bright-field imaging. Measurements of nanometer-size objects showed a similar feature size in DF-FSED imaging despite a signal-to-noise ratio 12 times smaller. Monte Carlo simulations were used to predict the variation of the contrast of a CNT/Fe/Pt system as a function of the collection angles. It was constant for very high collection angles (>450 mrad) and confirmed experimentally. The reverse contrast between carbon black particles and the smallest titanium dioxide (TiO2) nanoparticles was predicted by Monte Carlo simulations and observed in the DF-FSED micrograph of a battery electrode coating. However, segmentation of the micrograph was not able to isolate the TiO2 nanoparticle phase because of the close contrast of small TiO2 nanoparticles compared to the C black particles.
Long-Term Ultrastructural Indices of Lead Intoxication in Pulmonary Tissue of the Rat
Authors: Kaczyńska Katarzyna , Walski Michał , Szereda-Przestaszewska Małgorzata 
Published: August 2013

AbstractIn the present research long-term pulmonary toxicity of lead was investigated in rats treated by intraperitoneal administration of lead acetate for three consecutive days (25 mg/kg per day). Five weeks after treatment average lead content in the whole blood was 0.41 μg/dL ± 0.05, in the lung homogenates it measured 3.35 μg/g ± 0.54, as compared to the control values of 0.13 ± 0.07 μg/dL and 1.03 μg/g ± 0.59, respectively. X-ray microanalysis of lung specimens displayed lead localized mainly within type II pneumocytes and macrophages. At the ultrastructural level the effects of lead toxicity were found in lung capillaries, interstitium, epithelial cells, and alveolar lining. Alveolar septa showed intense fibrosis, consisting of collagen, elastin, and fibroblasts. Thinned alveolar septa had emphysematous tissue with some revealing signs of angiogenesis. Type II pneumocytes contained lamellar bodies with features of laminar destruction. Fragments of the surfactant layer were often detached from the alveolar epithelium. These findings indicate that 5 weeks after exposure, lead provokes reconstruction of the alveolar septa including fibrosis and emphysematous changes in the lung tissue.
Elinor Ostrom and the robust political economy of common-pool resources
Authors: PENNINGTON MARK 
Published: August 2013

Abstract:This paper situates Elinor Ostrom's work on common-pool resource management in the tradition of ‘robust political economy’. Ostrom's analysis of bottom-up governance institutions is shown to recognise that such arrangements though imperfect are better placed to cope with bounded rationality and incentive compatibility problems in the management of smaller- and medium-scale common-pool resources. While Ostrom's work provides an analytical framework to explain the success of these arrangements, however, the paper argues that it lacks a robust account of when, if ever, top-down governance arrangements are to be preferred.
AXIOMATIC TRUTH, SYNTAX AND METATHEORETIC REASONING
Authors: LEIGH GRAHAM E. , NICOLAI CARLO 
Published: August 2013

AbstractFollowing recent developments in the literature on axiomatic theories of truth, we investigate an alternative to the widespread habit of formalizing the syntax of the object-language into the object-language itself. We first argue for the proposed revision, elaborating philosophical evidences in favor of it. Secondly, we present a general framework for axiomatic theories of truth with ‘disentangled’ theories of syntax. Different choices of the object theory O will be considered. Moreover, some strengthenings of these theories will be introduced: we will consider extending the theories by the addition of coding axioms or by extending the schemas of O, if present, to the entire vocabulary of our theory of truth. Finally, we touch on the philosophical consequences that the theories described can have on the debate about the metaphysical status of the truth predicate and on the formalization of our informal metatheoretic reasoning.
Effect of spectrally aware tunable front ends on wireless communication systems
Authors: Jeong Seongheon , Chappell William J. 
Published: August 2013

In this paper, the benefits of adaptive preselect filtering are investigated by analyzing mote-to-mote throughput in the presence of interference. In a city-wide deployment of a sensor network, of the 150 wireless sensor nodes deployed in our urban test system, five nodes were electrically “lost”. Surprisingly, the limiting factor was not the signal strength, but the neighboring cell towers that caused nearby interference. Therefore, we explored the effect of an adaptive front end to mitigate these nearby interferers. The sensor motes operated at a fixed band, the unlicenced band of 902 to 928 MHz, and did not have the frequency adaptability of future cognitive radios. However, the effect was demonstrative of the potential benefits of adaptive preselect filtering. The measured result shows substantial improvements over the fixed band system by even slight tuning of the bandwidth and/or the center frequency of the preselect filter. Experimentally and numerically, we show that both tuning in the filter bandwidth and/or center frequency can significantly improve the packet reception rate. Guidelines for achieving an optimized filtering technique are given to provide a broad understanding of how the adaptable preselect filtering can be utilized.