bluuebunny/crossref_metadata_2025_split huggingface dataset:
Critical success factors for transforming pedagogy with mobile Web 2.0
Authors: Cochrane Thomas Donald 
Published: December 2012

AbstractMobile learning (mlearning) research has in general been characterised by short‐term comparative pilot studies with little high‐level critique or theory formation. Consequently, there is limited evidence in the literature of mlearning research that is longitudinal across multiple contexts, cooperative and participatory. In response, this paper reflects upon longitudinal (2006–2011) participatory action research and identifies six critical success factors for implementing mobile Web 2.0. These are drawn from the design and implementation of over 35 projects from 2006 to 2011, exploring pedagogical transformation enabled by mobile Web 2.0 integration in higher education. Two of these critical success factors are highlighted in this paper: the need for new approaches to technical and pedagogical support, and the sustained interaction of supporting communities of practice.
Outcome Prediction for Heart Failure Telemonitoring Via Generalized Linear Models with Functional Covariates
Authors: BARALDO STEFANO , IEVA FRANCESCA , PAGANONI ANNA MARIA , VITELLI VALERIA 
Published: December 2012

Abstract.An effective methodology for dealing with data extracted from clinical surveys on heart failure linked to the Public Health Database is proposed. A model for recurrent events is used for modelling the occurrence of hospital readmissions in time, thus deriving a suitable way to compute individual cumulative hazard functions. Estimated cumulative hazard trajectories are then treated as functional data, and they are used as covariates along with clinical survey data within the framework of generalized linear models with functional covariates.
Inner Constraints for Planar Features
Authors: Lichti Derek D. , Chow Jacky C. K. 
Published: December 2012

AbstractGeometric features, planes in particular, have recently replaced signalised points as the object space primitives of choice for a number of fundamental terrestrial laser scanner data processing tasks such as registration, self‐calibration and deformation monitoring. The inner constraints for planes are developed in this paper owing to their importance as the optimal means of datum definition. Pertinent least squares adjustment results from several terrestrial laser scanner datasets are presented to demonstrate the impact of planar inner constraints on registration and self‐calibration. When solution quality is measured in terms of parameter precision and correlation, it is demonstrated that the planes should be constrained for both laser scanner registration and self‐calibration with a basic additional parameter set.
Longitudinal Changes in White Matter Integrity Among Adolescent Substance Users
Authors: Bava Sunita , Jacobus Joanna , Thayer Rachel E. , Tapert Susan F. 
Published: December 2012

BackgroundThe influence of repeated substance use during adolescent neurodevelopment remains unclear as there have been few prospective investigations. The aims of this study were to identify longitudinal changes in fiber tract integrity associated with alcohol‐ and marijuana‐use severity over the course of 1.5 years.MethodsAdolescents with extensive marijuana‐ and alcohol‐use histories by mid‐adolescence (n = 41) and youth with consistently minimal if any substance use (n = 51) were followed over 18 months. Teens received diffusion tensor imaging and detailed substance‐use assessments with toxicology screening at baseline and 18‐month follow‐ups (i.e., 182 scans in all), as well as interim substance‐use interviews each 6 months.ResultsAt an 18‐month follow‐up, substance users showed poorer white matter integrity in 7 tracts: (i) right superior longitudinal fasciculus, (ii) left superior longitudinal fasciculus, (iii) right posterior thalamic radiations, (iv) right prefrontal thalamic fibers, (v) right superior temporal gyrus white matter, (vi) right inferior longitudinal fasciculus, and (vii) left posterior corona radiata (ps < 0.01). More alcohol use during the interscan interval predicted higher mean diffusivity (i.e., worsened integrity) in right (p < 0.05) and left (p = 0.06) superior longitudinal fasciculi, above and beyond baseline values in these bundles. Marijuana use during the interscan interval did not predict change over time. More externalizing behaviors at Time 1 predicted lower fractional anisotropy and higher radial diffusivity (i.e., poorer integrity) of the right prefrontal thalamic fibers (p < 0.025).ConclusionsFindings add to previous cross‐sectional studies reporting white matter disadvantages in youth with substance‐use histories. In particular, alcohol use during adolescent neurodevelopment may be linked to reductions in white matter quality in association fiber tracts with frontal connections. In contrast, youth who engage in a variety of risk‐taking behaviors may have unique neurodevelopmental trajectories characterized by truncated development in fronto‐thalamic tracts, which could have functional and clinical consequences in young adulthood.
A More Perfect Commodity: Bottled Water, Global Accumulation, and Local Contestation
Authors: Jaffee Daniel , Newman Soren 
Published: December 2012

AbstractBottled water sits at the intersection of debates regarding the social and environmental effects of the commodification of nature and the ways neoliberal globalization alters the provision of public services. Utilizing Polanyi's concept of fictitious commodities and Harvey's work on accumulation by dispossession, this article traces bottled water's transformation from elite niche item to a product consumed by three fourths of U.S. households. Drawing on ethnographic research with participants in two cases of proposed spring water extraction from rural communities by industry leader Nestlé Waters, we make two principal arguments. First, the case of bottled water necessitates a reevaluation of existing theoretical frameworks regarding water privatization and commodification. Municipal tap water networks pose substantial barriers to capital accumulation, leading one influential scholar to frame water as an “uncooperative commodity.” However, bottled water's characteristics enable it to evade many of these constraints, rendering it a “more perfect commodity” for accumulation. Second, expansion of the market good of bottled water alters the prospects for the largely publicly provided good of tap water. We conclude that the growth of this relatively new commodity represents a more serious threat to the project of universal public drinking water provision than that posed by tap water privatization.
Ruptured Internal Carotid Artery Aneurysm Presenting as a Sinonasal Organized Hematoma: Conventional Approach May Endanger Life
Authors: Kuo Chin‐Lung , Li Wing‐Yin , Luo Chao‐Bao , Ho Ching‐Yin 
Published: December 2012

ABSTRACTSinonasal organized hematoma (SOH) is an uncommon benign entity with locally aggressive behavior. The conventional approach is complete resection. This approach, however, can cause massive hemorrhage and mortality in our patient due to a ruptured internal carotid artery (ICA) aneurysm hidden inside the SOH. To the best of our knowledge, this is the first case of a huge SOH with skull base invasion caused by a hidden ICA aneurysm, which usually would not be large enough to result in a sinonasal mass lesion. This case suggests that the possibility of an aneurysm should always be considered if a SOH is suspected, especially when it is huge and close to the ICA. Surgical resection may not be the first therapeutic choice unless the differential cause of a hidden aneurysm can be excluded.
Current Issues and Recent Advances in Australian Dendrochronology: Where to Next?
Authors: HEINRICH INGO , ALLEN KATHRYN 
Published: December 2012

AbstractTrees and shrubs constitute one of the most widely distributed terrestrial stores of environmental information. To date, dendrochronological exploitation of information stored in Australian plants has mostly relied on development and analysis of cross‐dated ring‐width chronologies or ring/growth zone counts. Thus far, however, ring‐width chronologies have only been produced from sites in the relatively seasonal climates of southeastern and southwestern Australia and the far north. These chronologies have been developed almost exclusively for climatic analyses. Ring or growth zone counts have provided invaluable environmental information but can also be somewhat limited. We argue that evolution of a uniquely Australian dendrochronology will depend on innovative uses of information available from stable isotopes, wood property, elemental and wood anatomical analyses, and 14C dating. Interdisciplinary approaches with a lesser focus on stringent requirements of cross‐dating and chronology development may also facilitate appropriate, and needed, methodological adaptation. Both high‐ and low‐resolution records from across the Australian landscape can provide insights into challenges presented by the possible impacts of climate change and natural disasters across different environments and land management practices. They also have significant potential to contribute to multi‐proxy reconstructions of Australian environments.
Associations of Physical Activity and Dietary Behaviors With Children's Health and Academic Problems*
Authors: Shi Xiangrong , Tubb Larry , Fingers Sheryl T. , Chen Shande , Caffrey James L. 
Published: December 2012

BACKGROUND: We examined the associations of physical activities and dietary behaviors with children's health and academic‐behavioral problems.METHODS: We employed a Community‐wide Children's Health Assessment and Planning Survey to examine physical activity, healthy meals, health status, and academic‐behavioral problems in 3708 children 7 to 14 years of age. Statistical associations were examined with chi‐square test and logistic regression analysis; we calculated odds ratios (ORs) and 95% confidence intervals (CIs).RESULTS: Among these children, 30.2% were overweight‐obese, 11.0% had academic problems, and 7.9% had behavioral problems. Children classified as healthy eaters were more likely to exercise ≥4 days/week (79.1% vs 64.6%, OR: 2.08, 95% CI: 1.14 to 2.49), less likely to be overweight‐obese (27.7% vs 44.6%, OR: 0.48, CI: 0.31 to 0.73), less likely to have academic problems (9.1% vs 16.1%, OR: 0.57, 95% CI: 0.41 to 0.79) and behavioral problems (6.9% vs 13.9%, OR: 0.46, 95% CI: 0.32 to 0.66) compared with their less healthy eating peers. Physical activity and healthy meals were associated with an improved health status (p < .001). However, the proportions of children taking unhealthy meals or choosing sedentary lifestyle increased as the cohorts progressed (p < .05) from childhood (7 to 8 years) to adolescence (13 to 14 years).CONCLUSIONS: Healthy (or unhealthy) lifestyle behaviors are significantly interrelated. Children who take healthy meals and exercise often are associated with better health and fewer academic and behavioral problems. Unfortunately, taking unhealthy meals and sedentary lifestyle characterize a growing proportion of young adolescents. Thus, curbing unhealthy lifestyle behaviors should start in early childhood.
The Impact of Known Criminogenic Factors on Offenders with Intellectual Disability: Previous Findings and New Results onADHD
Authors: Lindsay William R. , Carson Derek , Holland Anthony J. , Taylor John L. , O'Brien Gregory , Wheeler Jessica R. 
Published: December 2012

BackgroundDevelopmental and index offence variables have been implicated strongly in later criminal behaviour and service pathways and this paper investigated attention deficit hyperactivity disorder (ADHD) which, with conduct disorder, has emerged from previous studies on offenders.ADHDand conduct disorder are over‐represented among criminal populations when compared to the general population. The present authors reviewed the extent to whichADHDaffected the presentation of offenders with intellectual disability.MethodInformation related to index behaviour, history of problem behaviours, childhood adversity and psychiatric diagnoses was recorded in 477 referrals to forensic intellectual disability services. Comparisons were made between those with a previous diagnosis ofADHDand those without.ResultsTheADHDgroup showed higher proportions of physical aggression, substance use, previous problems including aggression, sexual offences and property offences, birth problems and abuse in childhood. Effect sizes were small.ConclusionAttention deficit hyperactivity disorder with conduct disorder is associated with a greater degree and history of problematic behaviour in offenders with intellectual disability.
Colonization history of Metrioptera roeselii in northern Europe indicates human‐mediated dispersal
Authors: Kaňuch Peter , Berggren Åsa , Cassel‐Lundhagen Anna 
Published: December 2012

AbstractAimThe bush‐cricket Metrioptera roeselii is an example of an insect which has expanded its indigenous range beyond expectations based on its natural dispersal potential. Understanding how species colonize new areas is vital for formulating effective species conservation programmes and managing invasive species. The aim of this research is to use mitochondrial sequence and microsatellite data to delineate the likely origin and dispersal pathways of M. roeselii in northern Europe. The well‐known ecology of the species and the detailed colonization data make it a very suitable model species for addressing questions relating to invasiveness.LocationFennoscandia, Baltic Sea coast, northern Europe.MethodsUsing a 676 bp fragment of the mitochondrial cytochrome oxidase subunit I (COI) gene and seven polymorphic microsatellite loci, we genotyped and compared populations at 28 sites within the continuous range of M. roeselii along the Baltic Sea coast, and 10 isolated populations in Denmark, islands in the Baltic Sea and the Scandinavian Peninsula. The acquired data, information on the species' ecology and historical population establishment records were used to infer the colonization history and pathways of this species.ResultsBoth mitochondrial DNA and microsatellite data indicated that several of the isolated populations did not originate from their nearest locations within the continuous distribution area of M. roeselii. Instead, the likeliest source populations were in some cases situated > 500 km from the isolated populations. Hence the first records of appearance in the isolated sites did not coincide with the species' natural expansion but agreed well with the time of colonization of the founder sites inferred from the genetic data.Main conclusionsThe limited ability of M. roeselii to cross geographical barriers through active dispersal, the inferred colonization pathways from this study, and the knowledge that transport of eggs can potentially occur with agricultural products collectively suggest that at least some of the isolated populations originate from human‐mediated introductions rather than natural dispersal.
Origin and fate of the single‐island endemic moss Orthotrichum handiense
Authors: Patiño Jairo , Medina Rafael , Vanderpoorten Alain , González‐Mancebo Juana M. , Werner Olaf , Devos Nicolas , Mateo Rubén G. , Lara Francisco , Ros Rosa M. 
Published: December 2012

AbstractAimOur aims were: to determine the evolutionary origin of the single‐island endemic moss Orthotrichum handiense; to assess whether its endemicity results from a recent origin or founder event, a loss of dispersal ability, specific habitat requirements, or contraction of a formerly wider range; and to make predictions about its ability to face ongoing climate change.LocationFuerteventura, Canary Islands.MethodsThe evolutionary origin of O. handiense was determined by phylogenetic analysis and molecular dating. The spatial genetic structure and demographic history of 48 individuals of O. handiense were analysed with inter‐simple sequence repeat (ISSR) markers through analyses of molecular variance, Mantel tests, mismatch distributions and bottleneck analyses. The macroclimatic envelope of the species was modelled using an ensemble approach of eight species distribution models, and its suitable areas predicted for extant, past (21 ka) and future (2050, 2080) conditions.ResultsOrthotrichum handiense was resolved as sister to the Californian O. underwoodii and their most recent common ancestor was dated to early Miocene–Pliocene. ISSR analyses revealed extremely low levels of genetic diversity and provided evidence for a recent bottleneck and for isolation‐by‐distance at the local scale. The different models investigated all pointed to the mismatch between the limited extant distribution and the extent of macroclimatically suitable areas. All models predicted climatic unsuitability on Fuerteventura and Lanzarote at 21 ka, but were conflicting in other areas. A dramatic reduction and loss of suitable areas were predicted for 2050 and 2080, respectively.Main conclusionsThe phylogenetic position of O. handiense points to a long‐distance dispersal event from a western North American ancestor and emphasizes the differences in the origin of Macaronesian endemic bryophytes and angiosperms. The predicted absence of suitable macroclimatic conditions in Fuerteventura at 21 ka supports the hypothesis of a palaeoendemic origin and a recent founder event in Fuerteventura, consistent with the low levels of genetic diversity and with evidence for a recent bottleneck. While the biogeographical history of the species hence involves major dispersal events over periods of tens of thousands of years, its ability to respond quickly to predicted climate change during the next few decades is questioned.
The Effectiveness of Narrative Therapy With Young People With Autism
Authors: Cashin Andrew , Browne Graeme , Bradbury Joanne , Mulder Ann 
Published: December 2012

ProblemThe aim of this pilot study was to be the first step toward empirically determining whether narrative therapy is effective in helping young people with autism who present with emotional and behavioral problems.Autism is increasingly being recognized in young people with average and above intelligence. Because of the nature of autism, these young people have difficulty navigating the challenges of school and adolescence. Narrative therapy can help them with their current difficulties and also help them develop skills to address future challenges.Narrative therapy involves working with a person to examine and edit the stories the person tells himself or herself about the world. It is designed to promote social adaptation while working on specific problems of living.MethodThis pilot intervention study used a convenience sample of 10 young people with autism (10–16 years) to evaluate the effectiveness of five 1 hr sessions of narrative therapy conducted over 10 weeks. The study used the parent‐rated Strengths and Difficulties Questionnaire (SDQ) as the primary outcome measure. Secondary outcome measures were the Kessler‐10 Scale of Psychological Distress (K‐10), the Beck Hopelessness Scale, and a stress biomarker, the salivary cortisol to dehydroepiandrosterone (DHEA) ratio.FindingsSignificant improvement in psychological distress identified through the K‐10 was demonstrated. Significant improvement was identified on the Emotional Symptoms Scale of the SDQ. The cortisol:DHEA ratio was responsive and a power analysis indicated that further study is indicated with a larger sample.ConclusionNarrative therapy has merit as an intervention with young people with autism. Further research is indicated.
Curves as traits: genetic and environmental variation in mate preference functions
Authors: Rodríguez R. L. , Hallett A. C. , Kilmer J. T. , Fowler‐Finn K. D. 
Published: December 2012

AbstractStudy of the genetic and developmental architecture of mate preferences lags behind the study of sexual ornaments. This is in part because of the challenges involved in describing mate preferences, which are expressed as a function of variation in ornaments. We used the function‐valued approach to test for genetic and environmental components of variation in female mate preferences in Enchenopa treehoppers (Hemiptera: Membracidae). These insects communicate with plant‐borne vibrational signals, and offer a case study of speciation involving sexual selection and environmental change. We focused on female preferences for male signal frequency, the most divergent signal trait in Enchenopa. Obtaining complete, individual‐level descriptions of mate preferences in a full‐sib, split‐family rearing experiment, we document substantial genetic variation in mate preference functions. Focusing on traits describing variation in the shape of the preference functions, we further document considerable broad‐sense heritability and evidence of weak genotype × environment interaction in most traits. Against the background of recent and rapid divergence in Enchenopa, these results indicate potent mechanisms that maintain variation and sustain the involvement of mate preferences in sexual selection.
Physiological and Physicochemical Behavior of Soursop Fruits Refrigerated with 1‐Methylcyclopropene
Authors: Espinosa I. , Ortiz R.I. , Tovar B. , Mata M. , Montalvo E. 
Published: December 2012

AbstractThe effect of 1‐methylcyclopropene (1‐MCP) on the ripening of a native variety of soursop (Annona muricata L.) under refrigerated storage was evaluated. Control fruits were stored at 25 and 16C, and a group of fruits was exposed to 200 or 400 nL/L of 1‐MCP and then stored at 16C. The effect of 1‐MCP on soursop fruits stored at 16C (6 days) and then at 25C was also studied. Fruits stored at 25C ripened after 4–6 days. Fruits held at 16C ripened after 8–9 days; however, chilling injury symptoms were observed. 1‐MCP caused a reduction in respiration and ethylene production rates and there was no visible chilling injury to the fruit pulp. In conclusion, application of 200 or 400 nL/L of 1‐MCP on refrigerated soursop delayed ripening for 7 days, which should provide additional time to handle the fruit at least in the domestic market.Practical ApplicationsAnnonaceas are highly perishable fruits, and further investigation on postharvest handling is necessary because there is no postharvest treatment or technology available to preserve the fruits for more than 9 days. There are several studies on the application of 1‐methylcyclopropene (1‐MCP) in Annonaceas, but not all species have responded acceptably to 1‐MCP. Thus, more research on the application of 1‐MCP on unstudied varieties of Annonaceas is needed in order to explore the potential for the use of 1‐MCP. This study revealed that the application of 1‐MCP, followed by refrigerated storage, can lead to a 7‐day delay of the ripening process in the variety of soursop fruit grown in Nayarit, Mexico. This may contribute to an increase in availability and consumption, a reduction in postharvest losses and an increase in distribution of the soursop fruits in the national markets.