bluuebunny/crossref_metadata_2025_split huggingface dataset:
Country differences in patient characteristics and treatment in schizophrenia: data from a physician-based survey in Europe
Authors: Papageorgiou G. , Cañas F. , Zink M. , Rossi A. 
Published: March 2011

AbstractSchizophrenia is a frequent psychiatric disorder whose prevalence appears to be relatively stable across different patient groups. However, attitudes to care and resources devoted to mental health care may differ between countries. The objective of this analysis was to compare sociodemographic and psychopathological features of patients, antipsychotic treatment and frequency of hospitalisation between four European countries (Germany, Greece, Italy and Spain) collected as part of a large survey of the characteristics of patients with schizophrenia. The survey was conducted by structured interview of 744 randomly-selected psychiatrists in four European countries who recruited 3996 patients. Information on 39 variables was collected. A number of between-country differences were observed which tended to distinguish Germany on the one hand, from the Mediterranean countries, and Greece in particular, on the other. While demographic features and clinical features were essentially similar, more patients in Germany were considered to have severe disease by their psychiatrist (59.0% versus 35.9% in Greece) and to be hospitalised (49.3% versus 15.0%). 46.7% of German patients were living alone compared to less than 20% in the Mediterranean countries and 50.2% were living with their family (versus over70% elsewhere). Smoking and addictive behaviours were more frequently reported for patients in Spain. With regard to empirically derived patient subgroups, Subgroup 2, corresponding to well-integrated and autonomous patients with mild to moderate disease severity was most highly represented in Greece (23.6% of patients compared to less than 10% elsewhere) elsewhere, Subgroup 6 (poorly-integrated patients with moderately severe disease who require caregiver support) was under-represented in Germany (4.5% versus over 17% elsewhere). Patterns of treatment were essentially similar, although quetiapine was more frequently prescribed and paliperidone less frequently prescribed in Germany than elsewhere. Reasons for treatment choice were comparable between countries, primarily related to good tolerability and control of positive symptoms. The differences observed may be attributed to differences in mental health care resource provision, socio-cultural or educational differences or to resource issues.
ADDING VALUE TO FIELD-BASED AGRONOMIC RESEARCH THROUGH CLIMATE RISK ASSESSMENT: A CASE STUDY OF MAIZE PRODUCTION IN KITALE, KENYA
Authors: DIXIT P. N. , COOPER P. J. M. , DIMES J. , RAO K. P. 
Published: March 2011

SUMMARYIn sub-Saharan Africa (SSA), rainfed agriculture is the dominant source of food production. Over the past 50 years much agronomic crop research has been undertaken, and the results of such work are used in formulating recommendations for farmers. However, since rainfall is highly variable across seasons the outcomes of such research will depend upon the rainfall characteristics of the seasons during which the work was undertaken. A major constraint that is faced by such research is the length of time for which studies could be continued, typically ranging between three and five years. This begs the question as to what extent the research was able to ‘sample’ the natural longer-term season-to-season rainfall variability. Without knowledge of the full implications of weather variability on the performance of innovations being recommended, farmers cannot be properly advised about the possible weather-induced risks that they may face over time. To overcome this constraint, crop growth simulation models such as the Agricultural Production Systems Simulator (APSIM) can be used as an integral part of field-based agronomic studies. When driven by long-term daily weather data (30+ years), such models can provide weather-induced risk estimates for a wide range of crop, soil and water management innovations for the major rainfed crops of SSA. Where access to long-term weather data is not possible, weather generators such as MarkSim can be used. This study demonstrates the value of such tools in climate risk analyses and assesses the value of the outputs in the context of a high potential maize production area in Kenya. MarkSim generated weather data is shown to provide a satisfactory approximation of recorded weather data at hand, and the output of 50 years of APSIM simulations demonstrate maize yield responses to plant population, weed control and nitrogen (N) fertilizer use that correspond well with results reported in the literature. Weather-induced risk is shown to have important effects on the rates of return ($ per $ invested) to N-fertilizer use which, across seasons and rates of N-application, ranged from 1.1 to 6.2. Similarly, rates of return to weed control and to planting at contrasting populations were also affected by seasonal variations in weather, but were always so high as to not constitute a risk for small-scale farmers. An analysis investigating the relative importance of temperature, radiation and water availability in contributing to weather-induced risk at different maize growth stages corresponded well with crop physiological studies reported in the literature.
SUPPORTING AGRICULTURAL INNOVATION IN UGANDA TO RESPOND TO CLIMATE RISK: LINKING CLIMATE CHANGE AND VARIABILITY WITH FARMER PERCEPTIONS
Authors: OSBAHR HENNY , DORWARD PETER , STERN ROGER , COOPER SARAH 
Published: March 2011

SUMMARYThis paper investigates farmers’ perceptions of climate change and variability in southwest Uganda and compares them with daily rainfall and temperature measurements from the 1960s to the present, including trends in daily rainfall and temperature, seasonality, changing probability of risk and intensity of rainfall events. Statistical analyses and modelling of rainfall and temperature were performed and contrasted with qualitative data collected through a semi-structured questionnaire. The fieldwork showed that farmers perceived regional climate to have changed in the past 20 years. In particular, farmers felt that temperature had increased and seasonality and variability had changed, with the first rainy season between March and May becoming more variable. Farmers reported detailed accounts of climate characteristics during specific years, with recent droughts in the late 1990s and late 2000s confirming local perceptions that there has been a shift in climate towards more variable conditions that are less favourable to production. There is a clear signal that temperature has been increasing in the climate data and, to a lesser extent, evidence that the reliability of rains in the first season has decreased slightly. However, rainfall measurements do not show a downward trend in rainfall amount, a significant shift in the intensity of rainfall events or in the start and end of the rainy seasons. We explore why there are some differences between farmers’ perceptions and the climate data due to different associations of risk between ideal rainfall by farmers, including the amount and distribution needed for production, meteorological definitions of normal rainfall or the long-term statistical mean and its variation, and the impact of higher temperatures. The paper reflects on the methodological approach and considers the implications for communicating information about risk to users in order to support agricultural innovation.
DEALING WITH CLIMATE-RELATED RISKS: SOME PIONEERING IDEAS FOR ENHANCED PASTORAL RISK MANAGEMENT IN AFRICA
Authors: OUMA ROBERT , MUDE ANDREW , VAN DE STEEG JEANNETTE 
Published: March 2011

SUMMARYThis paper makes the case for innovative risk management approaches in pastoral settings, which may include adjustments to the traditionally practiced approaches that have become progressively less effective. We use recent data from studies in Kenya and southern Ethiopia to confirm that traditional pastoral risk management approaches are increasingly futile against increasing external pressures, seasonal rainfall variability and future climate change. Some pioneering approaches and ideas, with potentially wider application to African pastoral settings, appear to offer greater hope; these include pilot studies designed to demonstrate the efficacy of index-based risk transfer products in pastoral systems, improvements in the management of food insecurity response for pastoralists and the recasting of development interventions as risk management. The International Livestock Research Institute, in collaboration with a wide range of partners, is currently testing these ideas.
CLIMATE VARIABILITY AND CHANGE: FARMER PERCEPTIONS AND UNDERSTANDING OF INTRA-SEASONAL VARIABILITY IN RAINFALL AND ASSOCIATED RISK IN SEMI-ARID KENYA
Authors: RAO K. P. C. , NDEGWA W. G. , KIZITO K. , OYOO A. 
Published: March 2011

SUMMARYThis study examines farmers’ perceptions of short- and long-term variability in climate, their ability to discern trends in climate and how the perceived trends converge with actual weather observations in five districts of Eastern Province in Kenya where the climate is semi-arid with high intra- and inter-annual variability in rainfall. Field surveys to elicit farmers’ perceptions about climate variability and change were conducted in Machakos, Makueni, Kitui, Mwingi and Mutomo districts. Long-term rainfall records from five meteorological stations within a 10 km radius from the survey locations were obtained from the Kenya Meteorological Department and were analysed to compare with farmers’ observations. Farmers’ responses indicate that they are well aware of the general climate in their location, its variability, the probabilistic nature of the variability and the impacts of this variability on crop production. However, their ability to synthesize the knowledge they have gained from their observations and discern long-term trends in the probabilistic distribution of seasonal conditions is more subjective, mainly due to the compounding interactions between climate and other factors such as soil fertility, soil water and land use change that determine the climate's overall influence on crop productivity. There is a general tendency among the farmers to give greater weight to negative impacts leading to higher risk perception. In relation to long-term changes in the climate, farmer observations in our study that rainfall patterns are changing corroborated well with reported perceptions from other places across the African continent but were not supported by the observed trends in rainfall data from the five study locations. The main implication of our findings is the need to be aware of and account for the risk during the development and promotion of technologies involving significant investments by smallholder farmers and exercise caution in interpreting farmers’ perceptions about long-term climate variability and change.
ASSESSING CLIMATE RISK AND CLIMATE CHANGE USING RAINFALL DATA – A CASE STUDY FROM ZAMBIA
Authors: STERN R. D. , COOPER P. J. M. 
Published: March 2011

SUMMARYRainfall variability, both within and between seasons, is reflected in highly variable crop growth and yields in rainfed agriculture in sub-Saharan Africa and results in varying degrees of weather-induced risk associated with a wide range of crop, soil and water management innovations. In addition there is both growing evidence and concern that changes in rainfall patterns associated with global warming may substantively affect the nature of such risk. Eighty-nine years of daily rainfall data from a site in southern Zambia are analysed. The analyses illustrate approaches to assessing the extent of possible trends in rainfall patterns and the calculation of weather-induced risk associated with the inter- and intra-seasonal variability of the rainfall amounts. Trend analyses use monthly rainfall totals and the number of rain days in each month. No simple trends were found. The daily data were then processed to examine important rain dependent aspects of crop production such as the date of the start of the rains and the risk of a long dry spell, both following planting and around flowering. The same approach is used to assess the risk of examples of crop disease in instances when a ‘weather trigger’ for the disease can be specified. A crop water satisfaction index is also used to compare risks from choices of crops with different maturity lengths and cropping strategies. Finally a different approach to the calculations of these risks fits a Markov chain model to the occurrence of rain, with results then derived from this model. The analyses shows the relevance of this latter approach when relatively short daily rainfall records are available and is illustrated through a comparison of the effects of El Niño, La Niña and Ordinary years on rainfall distribution patterns.
AN INTEGRATED ADAPTATION AND MITIGATION FRAMEWORK FOR DEVELOPING AGRICULTURAL RESEARCH: SYNERGIES AND TRADE-OFFS
Authors: JARVIS ANDY , LAU CHARLOTTE , COOK SIMON , WOLLENBERG EVA , HANSEN JAMES , BONILLA OSANA , CHALLINOR ANDY 
Published: March 2011

SUMMARYGlobal food security is under threat by climate change, and the impacts fall disproportionately on resource-poor small producers. With the goal of making agricultural and food systems more climate-resilient, this paper presents an adaptation and mitigation framework. A road map for further agricultural research is proposed, based on the CGIAR Research Program on Climate Change, Agriculture and Food Security. We propose a holistic, integrated approach that takes into account trade-offs and feedbacks between interventions. We divide the agenda into four research areas, three tackling risk management, accelerated adaptation and emissions mitigation, and the fourth facilitating adoption of research outputs. After reviewing specific technical, agronomic and policy options for reducing climate change vulnerability, we acknowledge that science and good-faith recommendations do not necessarily translate into effective and timely actions. We therefore outline impediments to behavioural change and propose that future research overcomes these obstacles by linking the right institutions, instruments and scientific outputs. Food security research must go beyond its focus on production to also examine food access and utilization issues. Finally, we conclude that urgent action is needed despite the uncertainties, trade-offs and challenges.
Population dynamics ofSesarma rectum(Crustacea: Brachyura: Grapsidae) in the Ariquindá River mangrove, north-east of Brazil
Authors: da Silva Castiglioni Daniela , de Oliveira Paloma Joana Albuquerque , da Silva Josivan Soares , Coelho Petrônio Alves 
Published: March 2011

This study was carried out in order to provide basic information on the population ecology of the crabSesarma rectumin the Ariquindá River mangrove, Tamandaré, State of Pernambuco, Brazil. The population was analysed with regard to the following aspects, in particular: the size-class frequency distribution of carapace width (CW), mean body size (CW) of males and females, morphological sexual maturity, sex-ratio, reproductive period, and recruitment. Samples were collected monthly from April 2008 through to March 2009; the crabs were collected manually, with a capture effort by one person for 30 minutes, during low tide. The specimens obtained were measured for CW, length of the propodus of males, and abdomen width of females; and the sex and ovigerous condition were noted. Altogether, we obtained 511 specimens (132 juvenile and 137 adult males, and 171 juvenile and 71 adult females, of which 32 were ovigerous). The median CW of males (16.15 mm) was significantly larger than that of females (13.82 mm) (P < 0.05). The size at morphological sexual maturity was 15.73 mm in males and 16.71 mm in females. The sex-ratio for the total of specimens analysed was 1.11:1 (male:female) (P > 0.05). The sex-ratio by size-class showed an anomalous pattern, with a greater abundance of males in the larger size-classes. The reproductive period was continuous and the highest frequency of ovigerous females was recorded in the spring and summer. The major pulse of recruitment occurred during autumn and winter, which is related to greater reproductive activity during the warmer months of the year.
Co-morbidity between major depressive disorder and anxiety disorders: shared etiology or direct causation?
Authors: Mathew A. R. , Pettit J. W. , Lewinsohn P. M. , Seeley J. R. , Roberts R. E. 
Published: March 2011

BackgroundMajor depressive disorder (MDD) and anxiety disorders (ANX) are debilitating and prevalent conditions that often co-occur in adolescence and young adulthood. The leading theoretical models of their co-morbidity include the direct causation model and the shared etiology model. The present study compared these etiological models of MDD–ANX co-morbidity in a large, prospective, non-clinical sample of adolescents tracked through age 30.MethodLogistic regression was used to examine cross-sectional associations between ANX and MDD at Time 1 (T1). In prospective analyses, Cox proportional hazards models were used to examine T1 predictors of subsequent disorder onset, including risk factors specific to each disorder or common to both disorders. Prospective predictive effect of a lifetime history of one disorder (e.g. MDD) on the subsequent onset of the second disorder (e.g. ANX) was then examined. This step was repeated while controlling for common risk factors.ResultsThe findings supported relatively distinct profiles of risk between MDD and ANX depending on order of development. Whereas the shared etiology model best explained co-morbid cases in which MDD preceded ANX, direct causation was supported for co-morbid cases in which ANX preceded MDD.ConclusionsConsistent with previous research, significant cross-sectional and prospective associations were found between MDD and ANX. The results of the present study suggest that different etiological models may characterize the co-morbidity between MDD and ANX based upon the temporal order of onset. Implications for classification and prevention efforts are discussed.
Narrating psychological distress: Associations between cross-clausal integration and mental health difficulties
Authors: ZINKEN JÖRG , BLAKEMORE CAROLINE , ZINKEN KATARZYNA , BUTLER LISA , SKINNER T. CHAS 
Published: March 2011

ABSTRACTPsychological research has emphasized the importance of narrative for a person's sense of self. Building a coherent narrative of past events is one objective of psychotherapy. However, in guided self-help therapy the patient has to develop this narrative autonomously. Identifying patients’ narrative skills in relation to psychological distress could provide useful information about their suitability for self-help. The aim of this study was to explore whether the syntactic integration of clauses into narrative in texts written by prospective psychotherapy patients was related to mild to moderate psychological distress. Cross-clausal syntax of texts by 97 people who had contacted a primary care mental health service was analyzed. Severity of symptoms associated with mental health difficulties was assessed by a standardized scale (Clinical Outcomes in Routine Evaluation outcome measure). Cross-clausal syntactic integration was negatively correlated with the severity of symptoms. A multiple regression analysis confirmed that the use of simple sentences, finite complement clauses, and coordinated clauses was associated with symptoms (R2 = .26). The results suggest that the analysis of cross-clausal syntax can provide information on patients’ narrative skills in relation to distressing events and can therefore provide additional information to support treatment decisions.
Changes in language usage of Puerto Rican mothers and their children: Do gender and timing of exposure to English matter?
Authors: HAMMER CAROL SCHEFFNER , LAWRENCE FRANK , RODRIGUEZ BARBARA , DAVISON MEGAN DUNN , MICCIO ADELE W. 
Published: March 2011

ABSTRACTThis longitudinal study investigated changes in reported language usage between Puerto Rican mothers and their preschoolers over a 4-year period. It also examined whether differences in language usage occurred depending on the timing of children's exposure to English and children's gender. Seventy-six mothers reported the languages they and their children used when talking to each other during 2 years in Head Start, kindergarten, and first grade. Mothers of children who were exposed to Spanish and English prior to preschool entry reported using more English to their children than mothers of children who were not exposed to English until after preschool entry. The language usage of the children followed the same patterns as their mothers. The difference between the groups was maintained over the 4 years, although both groups increased their English usage. A gender effect was observed. Mothers of girls were five times more likely to use “More or All Spanish” than mothers of sons. In addition, girls who were exposed to Spanish only prior to preschool entry were six times more likely to speak to their mothers in “More or All Spanish” than other participating children. The bidimensional model of acculturation is used to present and interpret the findings.
Assessing the productive vocabulary of Spanish–English bilingual toddlers from low-income families
Authors: MANCILLA-MARTINEZ JEANNETTE , PAN BARBARA ALEXANDER , VAGH SHAHER BANU 
Published: March 2011

ABSTRACTThis study investigates the utility and validity of the MacArthur–Bates Communicative Development Inventory (CDI) for use with low-income parents and their 24- to 36-month-old Spanish–English bilingual children (n= 79). Issues in the interpretation of the integrated CDI/Inventarios del Desarrollo de Habilidades Comunicativas (IDHC) score to index bilingual children's overall conceptual knowledge are also considered. Results indicate that the CDI/IDHC can be used with this population through at least age 36 months and parents are accurate reporters of their children's Spanish and English vocabulary. The value of the integrated score was confirmed. However, given the lack of norms associated with the integrated score, the complexity of determining how best to interpret this score was underscored.
Indexical information, encoding difficulty, and second language vocabulary learning
Authors: SOMMERS MITCHELL S. , BARCROFT JOE 
Published: March 2011

ABSTRACTResearch has demonstrated that second language (L2) vocabulary learning improves when target words are presented in acoustically varied compared with acoustically consistent formats. The present study investigated the extent to which this benefit of acoustic variability is a consequence of difficult encoding demands (cognitive effort hypothesis) versus increased representational quality. Experiment 1 compared L2 vocabulary learning for words produced in normal (easier encoding) or nasal (more difficult encoding) voice. Vocabulary learning was superior in the normal-voice condition, arguing against a simple cognitive effort hypothesis as the basis for improved L2 vocabulary learning with increased acoustic variability. Experiment 2 assessed the resistance of newly acquired L2 word forms to the effects of acoustic degradation. Participants heard six repetitions of each item in either a single-talker or multiple-talker condition. The robustness of the new word-form representations was assessed by measuring the accuracy and latency of L2 to first language (L1) translation as a function of the signal/noise ratio. At all four signal/noise ratios, accuracy and latency of L2 to L1 translation were significantly better for words learned in the multiple-talker as opposed to the single-talker condition. Of particular importance, the difference between single talkers and multiple talkers increased systematically as signal/noise ratio decreased. These findings suggest that the benefits of acoustic variability are a consequence of learners' ability to retain and use indexical information during the earliest stages of word learning and provide support for the representation quality hypothesis.