The diversity of dental patterns in the orthopantomography and its significance in human identification

The primary aim of this study was to evaluate the utility of orthopantomography for human identification. Three hundred orthopantomograms were randomly selected from those stored at Dental Hospital of Yonsei University in Seoul. Dental patterns observed in the orthopantomograms were converted into eight codes and their diversity was calculated. The diversity of dental patterns in the orthopantomogram data was 99.92% for full dentition and the diversity of mandible (99.28%) was slightly higher value than that of maxilla (98.22%). In the case of molars and premolars in both jaws, the diversity values ranged from 92.13% to 96.04%. It was founded that orthopantomography is a valuable means of personal identification not only based on full dentition but also when only the posterior teeth are available. The present study indicates that orthopantomography is excellent means of forensic identification.     

Barriers to competition and the effect on political shirking: 1953–1992

Economists and political scientists have offered a variety of explanations for why legislators might rationally choose to ignore the preferences of their constituents, political parties, and presidents. The broad conclusion of this literature is that there is an element of “shirking” in congressional voting. The objective of this paper is to suggest that the effects of shirking in congressional voting may have increased over time, largely in response to the raising of barriers to competition in congressional elections, thereby enabling legislators to vote their own preferences without fear of losing reelection. We use a quasi-experimental design that controls for the effects of party, region, electoral safety, presidential control of the White House, and constituency factors, in isolating the causal effects of barriers to entry on a continuous series of roll-calls regarding the raising of the debt limit between 1953 and 1992. We find that “shirking” in legislative voting on debt limit legislation is a post-1970s phenomenon.     

Three Traditions of Network Research: What the Public Management Research Agenda Can Learn from Other Research Communities

This article identifies and describes the development of three parallel streams of literature about network theory and research: social network analysis, policy change and political science networks, and public management networks. Noting that these traditions have sometimes been inattentive to each other's work, the authors illustrate the similarities and differences in the underlying theoretical assumptions, types of research questions addressed, and research methods typically employed by the three traditions. The authors draw especially on the social network analysis (sociological) tradition to provide theoretical and research insights for those who focus primarily on public management networks. The article concludes with recommendations for advancing current scholarship on public management networks.     

The statistical variability of blood alcohol concentration measurements in drink–driving cases

Like many other places in the world, Hong Kong has drink–driving legislation which prohibits a driver from having in his blood alcohol exceeding a prescribed limit while in control of a motor vehicle. The accuracy of measuring this alcohol concentration is obviously of prime concern as an erroneous result can avert the administration of justice. The common practice is to deduct all errors from the measured value and compare the deducted value with the prescribed limit, so that the benefit of all errors of the measurement is given to the driver. It is therefore important for any laboratory responsible for measuring blood alcohol concentrations to identify and quantify all errors associated with the measurement. The present study examined 900 blood alcohol determinations carried out by the Hong Kong Government Laboratory (HKGL) on cases of suspected drink driving. The determinations were performed by 5 different analysts with two different sets of instruments during 1995–1997. Statistical analysis indicated that the instruments had no bearing on the random error or variability and that even though analyst was a significant factor on variability, the deviation from the mean so caused was only 0.3% and of no practical significance. When the systematic error introduced by the tolerance limits of the certified alcohol standards (purchased from the Laboratory of Government Chemists, UK) was taken into account, the total uncertainty (random plus systematic errors) of an alcohol determination at 99.5% confidence level was found to be 4%. It is recommended that laboratories engaged in blood alcohol determination should adopt similar statistical treatment of their analytical results to find out the error and to ensure that the results are independent of analyst and instrument used.     

Parental Demandingness and Executive Functioning in Predicting Anxiety among Children in a Longitudinal Community Study

Journal of Youth and Adolescence - Theoretical models and empirical studies of anxiety have predominately focused on the main effects of various predictors such as executive functioning deficits on...     

Adolescents’ Reports of Parental Engagement and Academic Achievement in Immigrant Families

The purpose of this study was to add to the understanding of the effects of perceived parental engagement on adolescents’ academic achievement in immigrant families. Self-report data were collected from 1,245 adolescents in immigrant families from four high schools in Los Angeles County. The sample characteristics follow: 13–16 years old (M = 14.5); 58.9% female, 41.1% male; 57.5% Latino; 40.6% 1st generation youth (i.e., foreign born), 59.4% 2nd generation youth. After controlling for parental educational attainment, parental engagement variables were indirectly related to grades through youths’ academic engagement. Multigroup SEM indicated some differences between genders, generational statuses, and ethnicities (Latinos versus others). Adolescents’ perceptions of monitoring by mothers and fathers were indirectly related to grades through academic engagement. Perceived educational advice by mothers was indirectly related to grades through academic engagement for non-Latinos, boys, and 2nd generation youth. Perceived mothers’ schoolwork help was positively related to adolescents’ academic engagement in all the models (except 2nd generation youth), yet fathers’ schoolwork help was significant only for girls and 2nd generation youth.

Intergenerational Cultural Dissonance,Parent–Child Conflict and Bonding,and Youth Problem Behaviors among Vietnamese and Cambodian Immigrant Families

Intergenerational cultural dissonance (ICD)—a clash between parents and children over cultural values—is a frequent issue for Asian American youth. Using longitudinal data from the Cross Cultural Families Project, this study examines the mechanisms by which ICD contributes to problem behaviors, including whether ICD predicts parent–child conflict, whether parent–child conflict then has a direct effect on youth problem behavior, and whether positive bonding with parents mediates the effects of such conflict on youth problem behaviors among Vietnamese (n = 164) and Cambodian (n = 163) families with adolescents [average age = 15.2 years (SD = 1.05)]. The results from the path analyses show that, in both groups, ICD indirectly predicts problem behaviors by increasing parent–child conflict, which in turn weakens positive parent–child bonding. Interventions that target youths’ perception of intergenerational cultural gaps, help them manage conflict, and help strengthen bonds with parents may prevent problem behaviors among Cambodian and Vietnamese families. This study contributes to inform how to effectively prevent problems and difficulties among these families.

A Three-Step Latent Class Analysis to Identify How Different Patterns of Teen Dating Violence and Psychosocial Factors Influence Mental Health

Although multiple forms (i.e., physical, threatening, psychological, sexual, and relational abuse) and patterns (i.e., perpetration and victimization) of violence can co-occur, most existing research examines these experiences individually. Thus, the purpose of this study is to investigate: (1) homogenous subgroups based on victimization and perpetration of multiple forms of teen dating violence; (2) predictors of membership in these subgroups; and (3) mental health consequences associated with membership in each subgroup. Nine hundred eighteen adolescents in the 9^th or 10^th grade at seven public high schools in Texas participated in the survey (56?% female, White: 30?%, Hispanic: 32?%, African American: 29?%, others: 9?%). A three-step latent class analysis was employed. Five latent teen dating violence classes were identified: (1) nonviolence; (2) emotional/verbal abuse; (3) forced sexual contact; (4) psychological?+?physical violence; and (5) psychological abuse. Females, African Americans, and youth who had higher acceptance of couple violence scores and whose parents had less education were more likely to members of dating violence classes compared with the nonviolence class. Adolescents who experienced multiple types of dating violence reported greater mental health concerns. Prevention programs may benefit by identifying the homogenous subgroups of teen dating violence and targeting adolescent teen dating violence accordingly.     

A middle power’s trade policy under U.S.-China FTA competition: South Korea’s double hedging FTA diplomacy

Existing studies on the roles and foreign policies of middle powers place too much focus on their security policies, while there is a dearth of scholarship on their trade policies. Middle powers have used free trade agreement (FTA) politics not only to obtain economic benefits through trade expansion, but also to achieve broader foreign policy goals. Given the U.S.-China FTA competition in East Asia, as a middle power, South Korea, has developed double hedging FTA diplomacy by supporting both powers’ FTA initiatives in order to avoid potential conflicts and maintain favourable relationships with both powers. Specifically, Korea has tried to maximize its national interest and, furthermore, to maintain regional stability by establishing two bilateral FTAs, the Korea-U.S. FTA and the Korea-China FTA, and by showing interest and participating in larger FTA discussions, such as the US-led Trans-Pacific Partnership and the China-led Regional Comprehensive Economic Partnership.