Modeling long-range cross-correlations in two-component ARFIMA and FIARCH processes

We investigate how simultaneously recorded long-range power-law correlated multi-variate signals cross-correlate. To this end we introduce a two-component ARFIMA stochastic process and a two-component FIARCH process to generate coupled fractal signals with long-range power-law correlations which are at the same time long-range cross-correlated. We study how the degree of cross-correlations between these signals depends on the scaling exponents characterizing the fractal correlations in each signal and on the coupling between the signals. Our findings have relevance when studying parallel outputs of multiple-component of physical, physiological and social systems.Comment: 8 pages, 5 figures, elsart.cl

HOME RANGES OF THE NILGAI ANTELOPE (\u3ci\u3eBOSELAPHUS TRAGOCAMELUS\u3c/i\u3e) IN TEXAS

Information related to home ranges of the nilgai antelope (Boselaphus tragocamelus) was needed to estimate spread of cattle-fever ticks (Riphicephalus microplus and R. annulatus) and to develop management protocols. We captured, placed telemetry collars on, and monitored 10 male and 12 female nilgai antelopes during February 2006–May 2008. We detected no difference between size of home ranges of males and females and determined maximum axes of home ranges of 16.3 and 13.8 km, respectively. The combination of large home ranges and large axes of home range indicates that if cattle-fever ticks are being maintained on nilgai antelopes, then the area in which these antelopes may spread ticks is great

HOME RANGES OF THE NILGAI ANTELOPE (\u3ci\u3eBOSELAPHUS TRAGOCAMELUS\u3c/i\u3e) IN TEXAS

Information related to home ranges of the nilgai antelope (Boselaphus tragocamelus) was needed to estimate spread of cattle-fever ticks (Riphicephalus microplus and R. annulatus) and to develop management protocols. We captured, placed telemetry collars on, and monitored 10 male and 12 female nilgai antelopes during February 2006–May 2008. We detected no difference between size of home ranges of males and females and determined maximum axes of home ranges of 16.3 and 13.8 km, respectively. The combination of large home ranges and large axes of home range indicates that if cattle-fever ticks are being maintained on nilgai antelopes, then the area in which these antelopes may spread ticks is great

Peptides encoded by short ORFs control development and define a new eukaryotic gene family

Despite recent advances in developmental biology and in genomics, key questions remain regarding the organisation of cells into embryos. One possibility is that novel types of genes might await discovery and could provide some of the answers. Genome annotation depends strongly on comparison with previously known gene sequences, and so genes having previously uncharacterised structure and function can be missed. Here we present the characterisation of tarsal-less, a new such type of gene. Tarsal-less has two unusual features: first, it contains more than one coding unit, a structure more similar to some bacterial genes. Second, it codes for small peptides rather than proteins, and in fact these peptides represent the smallest gene products known to date. Functional analysis of this gene in the fruitfly Drosophila shows that it has important functions throughout development, including tissue morphogenesis and pattern formation. We identify genes similar to tarsal-less in other species, and thus define a tarsal-less-related gene family. We expect that a combination of bioinformatic and functional methods, such as the ones we use in this study, will identify and characterize more genes of this type. Potentially, thousands of such new genes may exist

Risk of recurrence after venous thromboembolism in men and women: patient level meta-analysis

Objective To determine the effect of sex on the risk of recurrent venous thromboembolism in all patients and in patients with venous thromboembolism that was unprovoked or provoked (by non-hormonal factors)

The impact of physical, psychological, and sexual intimate partner violence on women's mental health: depressive symptoms, posttraumatic stress disorder, state anxiety, and suicide

Objective: This study aimed to determine the impact of lifetime physical, psychological, and sexual intimate male partner violence (IPV) on the mental health of women, after controlling for the contribution of lifetime victimization. The comorbidity of depressive symptoms and posttraumatic stress disorder (PTSD) and their relation to state anxiety and suicide were also assessed. Methods: Physically/psychologically (n 75) and psychologically abused women (n 55) were compared with nonabused control women (n 52). Information about sociodemographic characteristics, lifetime victimization, and mental health status (depressive and state anxiety symptoms, PTSD, and suicide) was obtained through face-to-face structured interviews. Results: Women exposed to physical/psychological and psychological IPV had a higher incidence and severity of depressive and anxiety symptoms, PTSD, and thoughts of suicide than control women, with no differences between the two abused groups. The concomitance of sexual violence was associated with a higher severity of depressive symptoms in both abused groups and a higher incidence of suicide attempts in the physically/psychologically abused group. The incidence of PTSD alone was very rare, and depressive symptoms were either alone or comorbid with PTSD. The severity of state anxiety was higher in abused women with depressive symptoms or comorbidity, as was the incidence of suicidal thoughts in the physically/psychologically abused group. Lifetime victimization was not a predictor of the deterioration of mental health in this study. Conclusions: These findings indicate that psychological IPV is as detrimental as physical IPV, with the exception of effects on suicidality, which emphasizes that psychological IPV should be considered a major type of violence by all professionals involved.Este es un artículo ampliamente citado internacionalmente respeto a violencia de pareja y consecuencias en la salud de las mujeres

Do the same risk and protective factors influence aggression towards partners and same-sex others?

The current studies examined whether several risk and protective factors operate similarly for Intimate Partner Violence (IPV) and same-sex aggression (SSA) in the same sample, and to assess whether they show similar associations for men and women. Study 1 (N = 345) tested perceived benefits and costs, and instrumental and expressive beliefs about aggression: perceived costs predicted IPV and SSA for both men and women. Expressive beliefs predicted IPV (more strongly for women), and instrumental beliefs predicted SSA. Study 2 (N = 395) investigated self-control, anxiety and empathy, finding that self-control strongly predictor both types of aggression in both sexes. Study 3 (N = 364) found that primary psychopathy (involving lack of anxiety) was associated with IPV for men and SSA in both sexes, whereas secondary psychopathy (involving lack of self-control) was associated with IPV and SSA in both sexes. Overall there were both similarities and differences in the risk factors associated with IPV and SSA, and for men and women. The implications of the findings for theoretical debates about the study of IPV are discussed

How does subjective well-being evolve with age? A literature review

This literature review provides an overview of the theoretical and empirical research in several disciplines on the relation between ageing and subjective well-being, i.e., how subjective well-being evolves across the lifespan. Because of the different methodologies, data sets and samples used, comparison among disciplines and studies is difficult. However, extant studies do show either a U-shaped, inverted U-shaped or linear relation between ageing and subjective well-being

Recovery from depressive symptoms, state anxiety and post-traumatic stress disorder in women exposed to physical and psychological, but not to psychological intimate partner violence alone: A longitudinal study

<p>Abstract</p> <p>Background</p> <p>It is well established that intimate male partner violence (IPV) has a high impact on women's mental health. It is necessary to further investigate this impact longitudinally to assess the factors that contribute to its recovery or deterioration. The objective of this study was to assess the course of depressive, anxiety and post-traumatic stress disorder (PTSD) symptoms and suicidal behavior over a three-year follow-up in female victims of IPV.</p> <p>Methods</p> <p>Women (n = 91) who participated in our previous cross-sectional study, and who had been either physically/psychologically (n = 33) or psychologically abused (n = 23) by their male partners, were evaluated three years later. A nonabused control group of women (n = 35) was included for comparison. Information about mental health status and lifestyle variables was obtained through face-to-face structured interviews.</p> <p>Results</p> <p>Results of the follow-up study indicated that while women exposed to physical/psychological IPV recovered their mental health status with a significant decrease in depressive, anxiety and PTSD symptoms, no recovery occurred in women exposed to psychological IPV alone. The evolution of IPV was also different: while it continued across both time points in 65.21% of psychologically abused women, it continued in only 12.12% of physically/psychologically abused women while it was reduced to psychological IPV in 51.5%. Hierarchical multiple regression analyses indicated that cessation of physical IPV and perceived social support contributed to mental health recovery, while a high perception of lifetime events predicted the continuation of PTSD symptoms.</p> <p>Conclusion</p> <p>This study shows that the pattern of mental health recovery depends on the type of IPV that the women had been exposed to. While those experiencing physical/psychological IPV have a higher likelihood of undergoing a cessation or reduction of IPV over time and, therefore, could recover, women exposed to psychological IPV alone have a high probability of continued exposure to the same type of IPV with a low possibility of recovery. Thus, women exposed to psychological IPV alone need more help to escape from IPV and to recuperate their mental health. Longitudinal studies are needed to improve knowledge of factors promoting or impeding health recovery to guide the formulation of policy at individual, social and criminal justice levels.</p