Poaching, habitat loss and the decline of neotropical parrots: a comparative spatial analysis

Objective

To evaluate the relative contributions of poaching and habitat loss to the endangerment of neotropical parrots

Method

A matched case-control design was employed. Using NatureServe digitized range maps for birds in the Americas, 145 neotropical parrot species were individually matched with 145 control species, from similar ranges and, by proxy, from similar habitats. The control species were taxonomically similar, mid-sized, forest-dwelling birds that, like parrots, use holes and cavities for breeding and roosting. The conservation status of the parrots and control birds was established through the IUCN Red List of endangered species.

Results

Nearly five times as many parrot species (59 out of 145) as non-parrots (13 out of 145) are threatened with extinction to some degree. In 54 out of 65 pairs with unequal conservation status, the parrot species is at greater risk of extinction.

Conclusions

Subject to limitations of the matching employed and the use of range data as a proxy for habitat, it is concluded that poaching is a strong threat to the conservation of neotropical parrots—perhaps stronger than habitat loss. Criminologists therefore have an important part to play in conservation of parrots, and perhaps also in conservation of other endangered species, through identification and implementation of measures to control poaching.     

Soziale Herkunft, politische Sozialisation und Wählen im Lebensverlauf

In this paper the influence of social origin as well as both the political communication and the religious education in the family on the voting behaviour in the life course have been investigated. Furthermore, we investigate the intergenerational transmission of parental party identification and the duration of its impact on the children’s voting patterns. For the empirical analyses, retrospective longitudinal data are employed. The empirical results confirm the significant impact of the social origin, the religious education, and the parental party identification on voting. However, their impact decreases in the later stages of the life cycle. Furthermore, the intergenerational reproduction of parental party identification has decreased significantly over consecutive generations.     

Toward a Stronger Socialism

正The upcoming 18th National Congress of the Communist Party of China(CPC) will be inscribed as an especially historic event.The congress will further emphasize and clarify the principles and policies that have already been clearly stated by the Party.Led by the CPC,     

Examining the Neighborhood Context of the Violent Offending-Victimization Relationship: A Prospective Investigation

The persistent link between offending and victimization is one of the most robust empirical findings in criminological research. Despite important efforts to isolate the sources of this phenomenon, it is not fully understood. Much attention has been paid to the role of individual-level factors; however, few studies have systematically integrated neighborhood conditions. Using prospective data from the Pittsburgh Youth Study the current research examines a set of hypotheses regarding the interplay of neighborhood structural conditions and the victim-offender overlap. A multilevel analytical technique is applied to the data which purges time-varying covariates of all time-stable unobserved heterogeneity. Results indicate that the relationship between offending and victimization is pronounced in disadvantaged neighborhoods, while offending is not significantly related to victimization risk in contexts marked by lower levels of disadvantage. The implications of the results for theory are discussed, along with recommendations for future research.     

Cardiac Changes Due to Electronic Control Devices? A Computer‐Based Analysis of Electrical Effects at the Human Heart Caused by an ECD Pulse Applied to the Body's Exterior

Electronic control devices (ECDs) deliver high‐voltage, low‐current energy pulses temporarily paralyzing a person. For the ECD–human interaction, we have developed a computer model using the SEMCAD program within which to simulate the electrical effects throughout the body resulting from the imposition of an ECD pulse at a particular point on the body surface. Our human body models were based on cross‐sectional MRIs and CT scans, with the dielectric properties of the various tissues assigned based on previously published values. We simulated the application of a single ECD pulse and calculated the resulting electric field strength and current and charge densities at different body locations. The results were compared with corresponding values obtained by other researchers in similar simulations. Furthermore, we simulated an application of a pulse of 20‐millisecond duration equal to the European household current of 50 Hz and to the ventricular fibrillation threshold. The resulting current level indicated at the heart muscle was 1/5 the level considered the threshold for triggering ventricular fibrillation.     

A longitudinal study of adolescents' future orientation (time perspective)

This longitudinal study was designed to test hypotheses concerning the influence of environmental changes in different groups (educational status; sex) of adolescents on their future orientation (FO). FO was measured through a free-response questionnaire on which the subjects indicated their hopes and fears (which were later categorized into various domains of life by independent judges). On a second questionnaire the subjects adjudged their present and future life in various given domains of life. The sample consisted of 24 male and 24 female adolescents, aged between 14–16 years at the time of the first measurement; the second measurement took place two years later. Half of the subjects of each sex were students at a Gymnasium (preparing for university study) at both times of measurement (high social status). The other half of the subjects of each sex were in their last year at the Hauptschule (continuation of elementary education) at the first time of measurement, and had taken up employment (e.g., an apprenticeship) by the time of the second measurement (low social status). At the time of the second measurement relatively more hopes and fears were voiced in the domains of personal development and occupation than at the first measurement. Independent of time of measurement, low-status subjects voiced relatively more hopes and fears related to the occupational domain, and boys had a more extended FO than girls. Low-status subjects — as compared to high-status subjects as well as to their own judgments at the first measurement — believed to a greater extent that the materialization of their hopes and fears depended on themselves rather than on external forces. These results support the assumption that FO cannot be dealt with as a global concept and that FO can be modified by change in the external environments, such as entry into an occupation.This study was conducted at the Sonderforschungsbereich 24, Sozial- und wirtschaftspsychologische Entscheidungsforschung, Universität Mannheim (West Germany), and financed by the Deutsche Forschungsgemeinschaft, with support from the Government of Baden-Württemberg. The three authors have contributed equally to this article.Received her Ph.D. from Universität Mannheim. Major interests are judgment and planning of small groups, adolescents, delinquents, and married couples.Received his Ph.D. from Princeton University. Major interests are small group processes, negotiation, and justice.He graduated from Universität Mannheim. Major interest is sociology of organizations.     

The influence of paternal substance abuse and difficult temperament in fathers and sons on sons' disengagement from family to deviant peers

This study was undertaken to examine the relative contribution of paternal history of substance abuse and difficult temperament in fathers and sons on a panel of individual, family, and interpersonal risk factors shown to be associated with deviant peer affiliations among boys. Deviant peer affiliations among boys have been associated with development of a conduct disorder and early age substance use. In a sample of sons of substance abusing fathers (n =56) and normal fathers (n=94), a structural equation path analysis revealed that the conjoint influence of paternal history of substance abuse and difficult temperament in fathers and sons influenced family and interpersonal processes that, in turn, influenced the developmental trajectory of the child toward deviant peer affiliations. The full model (F=74.49, p<.001, Stability Index=0.70) explained 50% of the variance on sons' Peer Delinquency Scale scores. Implications for primary prevention are discussed.Supported by the Center for Education and Drug Abuse Research (CEDAR), Pittsburgh, PA. Funded by the National Institute on Drug Abuse (No. DA 05605) and ROIs DA08540 and AA09985 to the first author. CEDAR is a consortium between St. Francis Medical Center and the University of Pittsburgh.Received Ph.D. from University of Pittsburgh. Research interests include temperament, parent-child relationships, peer affiliations, and drug and alcohol abuse.Received Ph.D. from University of Oklahoma. Research interests include etiology and vulnerability to substance abuse.Received Ph.D. from Queens University. Research interests include the etiology of conduct disorder.Received Ph.D. from University of Pittsburgh. Research interests include social environment risk factors for substance abuse.Received Ph.D. from Penn State University. Research interests include temperament and substance abuse.     

THE POLITICS OF MICROECONOMIC REFORM: STRUCTURING A GENERAL MODEL1

Abstract: This paper examines the current endeavours to render the Australian economy more economically efficient. While the case for microeconomic reform is clear in economic theory, Australian public policy analysts are less sanguine about the possibilities for its long-term success. This paper seeks to develop the parameters of a simple general model to explain both why microeconomic reform proposals are dominant today on the Australian policy agenda and, more importantly, what the conditions are for their success or failure. This general model provides a framework that will allow further elaboration in case studies of particular episodes of microeconomic reform.
The paper concludes pessimistically; micro-economic reform has been subsumed into the normal political agenda contests of Australian party politics. The pressures of such "politics" inclines Australian reforming towards incrementalism, rather than the Simon-style rationalism implicit from micro-economics. This mode of policy implementation will inhibit microeconomic reform in the longer term.