Sudden death in angiodysplasia of the gastroesophageal junction.

A 22-year-old Korean soldier, who had received blows to the neck and epigastrium from an officer 10 h earlier, suddenly died after massive hematemesis. He had been in relatively good health except for episodes of blood-tinged vomiting approximately 5 and 7 months prior to this event. Postmortem examination revealed angiodysplasia involving the gastroesophageal junction, and the stomach was distended with blood. No abnormal findings were present around the whole viscera, and the duodenum was free of blood. The pathologic significance of upper gastrointestinal angiodysplasia as a potential source of bleeding and a chronologic correlation between the trauma and bleeding are discussed.     

Stressors, coping resources and strategies, and police stress in South Korea

The present article extends prior research to identify the predictors of police stress from work place problems, the resources available through social support, different strategies for coping with stress, and conditions unique to policing in South Korea. The unique conditions are perceived public perception of police and attitudes towards women working outside of the home. Seven hundred officers were asked to participate in the research, and 686 did participate (96 percent response rate). Almost half of the variance in stress could be explained. Reports of being ridiculed and “set up” in dangerous situations, and to a lesser extent, lack of support from superiors and perceived disrespect from the public, were salient predictors of stress. Coping strategies did not moderate the associations between stressors and stress. Findings were interpreted in relation to collectivist culture and possible points of intervention.     

Forensic genetic analysis of mitochondrial DNA hypervariable region I/II sequences: an expanded Korean population database

We have analyzed variation of the mitochondrial DNA (mtDNA) hypervariable segments I and II (HVS-I and HVS-II) in 185 randomly chosen individuals from Korea to provide an expanded and reliable Korean database. Combined sequence comparison of HVS-I and HVS-II led to the identification of 167 different haplotypes characterized by 154 variable sites. One hundred and fifty-one of the haplotypes were individual-specific, 14 were found in two individuals and 2 were found in three individuals. A pairwise comparison of the 185 HVS-I/II sequences found an average of 10.11 +/- 4.63 differences between individuals. The random match probability and gene diversity for the combined hypervariable regions were estimated at 0.66% and 0.9988, respectively. Analyzing the expanded database including three previously reported data sets and the present data using haplogroup-based comparisons and comparison with closely related sequences allowed errors to be detected and eliminated, thus considerably improving data quality. Sample division comparisons based on PhiST genetic distance measures revealed no significant population differentiation in the distribution of mtDNA sequence variations between the present data set and a database in The Scientific Working Group on DNA Analysis Methods (SWGDAM), but did indicate differences from other sets of data. Based on the results of mtDNA profiles, almost all of the mtDNA types studied here could be classified into subsets of haplogroups common in east Asia, and show that the Koreans possess lineages from both the southern and the northern haplogroup complexes of east Asian populations. The new data, combined with other mtDNA sequences, demonstrate how useful comparison with closely related mtDNA sequences can be for improving database quality, as well as providing haplotype information for forensic and population genetic analyses in the Korean population.     

Regional Agricultural Endowments and Shifts of Poverty Trap Equilibria: Evidence from Ethiopian Panel Data

We examine changes in patterns of equilibria over time and across regions, applied to the Ethiopia Rural Household Survey. We revisit incidence of multiple equilibria using new nonparametric techniques, and examine single equilibria that remain stagnant below the poverty line. Using quantile regressions, we identify differences across the income distribution. We introduce the empirical analysis of sequences of equilibria. We identify a single equilibrium in 1994–1999 but find a second, higher equilibrium emerging in 1999–2004 – evidencing a shift from unimodal toward a bimodal asset distribution. The most deprived region exhibits a low-level stagnant equilibrium despite significant rural income growth nationwide.     

Microscopic Age Estimation from the Anterior Cortex of the Femur in Korean Adults*

Abstract: The purpose of this study was to develop age‐predicting equations from the anterior cortex of the femur of Korean adults. Seventy‐two femoral samples (44 male and 28 female) were obtained from Korean cadavers and used to develop the equations. The thin sections (<100‐μm thick) were prepared by manual grinding; the sections were not decalcified and were stained with Villanueva bone stain reagent. Analysis of covariance showed no significant differences in age‐adjusted histomorphological variables between sexes. In stepwise regression analysis, osteon population density, average osteon area, and the most anterior cortical width were selected for an age‐predicting equation which produced a high regression correlation (R² = 0.789). The average Haversian canal area was not significantly related to age for any specimen.     

Identification Using Frontal Sinus by Three‐Dimensional Reconstruction from Computed Tomography*

Abstract: Radiographs and computed tomography (CT) images have been increasingly applied and accepted in forensic sciences. Along with radiographs and CT images, the frontal sinus is often used for the individual identification because of its unique and unchangeable characteristics. The purpose of this study is to define the usefulness of three‐dimensional (3‐D) images of the frontal sinus for identification. CT images from 119 Korean cadavers were built up for 3‐D reconstruction and surveyed with 15 measurements. The total volume of the sinus, some nonmetric characteristics, and the bilateral asymmetry index in men differed significantly from those in women (p < 0.05). The digit codes, six sections and 10‐digit number, were almost able to accurately identify individuals (98%). This study showed a statistical difference between the sexes and classified the fused and prominent middle sinuses for the first time. This proposed method for identification is more accurate than those used in other studies.     

Strength of Strong Ties in Intercity Government Information Sharing and County Jurisdictional Boundaries

Studies have found that information sharing between city governments can be easily observed within the same county jurisdiction, but less attention has been paid to the reasons why the jurisdictional boundary matters. This article fills this lacuna, drawing on the insight of the “strength of strong ties” argument that “people help their friends first.” The analysis reveals that city governments in the Orlando, Florida, metropolitan area are more likely to share economic development information (EDI) with governments in the same county as the collective demand for such information in that area increases. This study additionally finds that the greater the demand for EDI, the more likely it is that city governments will seek the information from their county members. As a result, as the demand for information increases among city governments in a metropolitan area, the likelihood that it will be shared by all members of the area beyond the county boundaries decreases.