Jang Ho Kim

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The paper analyzes the vertical penetration of a small object through a floating sea ice plate. The analysis takes into account the fact that the bending cracks reach only through part of the ice plate thickness and have a variable depth profile. The cracks are modeled according to the Rice-Levy nonlinear softening line spring model. The plate-crack(More)
BACKGROUND Although surveillance data are limited in the US Affiliated Pacific, Alaska, and Hawaii, existing data suggest that the prevalence of childhood obesity is similar to or in excess of other minority groups in the contiguous US. Strategies for addressing the childhood obesity epidemic in the region support the use of community-based, environmentally(More)
We estimated overweight and obesity (OWOB) prevalence of children in US-Affiliated Pacific jurisdictions (USAP) of the Children's Healthy Living Program compared with the contiguous United States. We searched peer-reviewed literature and government reports (January 2001-April 2014) for OWOB prevalence of children aged 2 to 8 years in the USAP and found 24(More)
The U.S. Affiliated Pacific Region (USAPR) is an underserved region with high rates of obesity-related, non-communicable diseases and a low proportion of trained obesity prevention professionals, especially indigenous professionals. The Children's Healthy Living Training Program was developed to enhance the USAPR's capacity to address childhood obesity(More)
Robust portfolio optimization has been developed to resolve the high sensitivity to inputs of the Markowitz mean-variance model. Although much effort has been put into forming robust portfolios, there have not been many attempts to analyze the characteristics of portfolios formed from robust optimization. We investigate the behavior of robust portfolios by(More)
The high-cardinality of mean–variance portfolios is a concern in practice because it increases transaction costs and management fees. Therefore, we propose a method to resolve the cardinality problem by applying the semi-definite relaxation method to a cardinality constrained optimal tangent portfolio selection model. We find that the relaxed model becomes(More)
Although the e.risting tria.rial tests and colif/lled ullia.rial-straill compression tests achieve lugh pressures, ther ("IIlll/ot achieve Idrge shear strains or deviatoric normal strains that are observed In some types qf (oUapse r:f structures cauSPii hy missile impact, e.rplosiolls, and earthquakes, or in e.[plos/ve tnjprtion (fane/lOTS. A new ~'1)(' of(More)
701 ACI Structural Journal, V. 99, No. 5, September-October 2002. MS No. 01-381 received November 6, 2001, and reviewed under Institute publication policies. Copyright © 2002, American Concrete Institute. All rights reserved, including the making of copies unless permission is obtained from the copyright proprietors. Pertinent discussion will be published(More)