The Welfare Effect of Organic Milk

This study analyzes the demands for organic and conventional milk at both brand level and commodity level adopting the multi-stage demand approach. The study also measures the consumer benefits from organic milk introduction and finds the welfare effect significant.Demand and Price Analysis,

The Challenging and Transformative Implications of Education for Sustainable Development: A Case Study in South Korea

Sustainable development can be considered one of the biggest global challenges of this era, especially in the domain of education. Hence, this paper presents a case study on how the “Tongyoeng Regional Center for Expertise (Tongyoeng RCE)” has contributed to the practice of Education for Sustainable Development (ESD) and to the reformation of curriculum development process in South Korea. It establishes a cooperative system between formal education and in/non-formal education within an environment of a conservative and exclusive educational system. While focusing on the substantial achievement of Tongyoeng RCE that has transformed the South Korean education system from a “knowledge and grade-centred” Eastern educational regime to a “value and practice centred” one, this study also addresses how the RCE has initiated a “learning society,” that is, decentralized and deregulated educational communities that are more flexible in resolving the unprecedented challenges of globalization. This research emphasizes the implications of education for sustainable development as a challenging and transformative curriculum development process in South Korea

Importance of social skills in Korea's labor market

Thesis(Master) --KDI School:Master of Development Policy,2016According to the OECD’s project on Definition and Selection of Key Competencies, key competencies required for successfully dealing with the complex demands of society in the 21stCentury include “social skills”, or the ability to interact with other people. Although evidence from numerous researches emphasizes the importance of social skills, Korea’s education has continuously maintained its focus on rote-learning and cognitive skills. The aim of this research is to test whether social skills indeed have relevance in Korea’s labor market. Using data from Korea Education and Employment Panel, this study shows that social skills have apositiveimpact on individual earnings.Such a relationship between social skills and earnings holdstrue even after controlling for cognitive skills and other types of non-cognitive skills, as well as occupation and industry fixed effects.Introduction Literature Review Data and Methods Results DiscussionmasterpublishedJung Hee CHOI

Individualized masculine citizenship: study abroad men and military service in South Korea

This dissertation is a study of the politics of citizenship in the context of South Korea's ardent globalization and neoliberal reforms, through the stories of men who have spent extensive period time studying outside of South Korea, whom I call "study abroad men" in this thesis, and their military service in South Korea. My ethnographic research demonstrates that these study abroad men are both legally and culturally limited in their belonging abroad when they come of age and attempt to work and settle down after their education. Thus, despite their life and education abroad from an early age, these transnational young men deeply value enhancing the possibility of a viable future in South Korea; those who want to open up their possible futures in South Korea even come to appreciate compulsory military service (currently required to serve at least for two years, only for men) as an opportunity to secure full membership, a militarized masculine citizenship, in South Korea. Analyzing the ways in which study abroad men who value flexibility and mobility along with cosmopolitan aspiration make sense of and give meaning to military conscription in South Korea, I argue that study abroad men secure individualized masculine citizenship through a military service that is highly classed and largely pursued for individual benefits; as such their service differs from the dominant discourse in South Korea that legitimizes military conscription as an equal sacred duty of every male citizen for the sake of nation. I further argue that this pursuit of national membership through military service is not necessarily contradictory with cosmopolitan aspirations or flexible citizenship strategies. I specifically locate this project in contemporary South Korea, a site which offers a productive vantage point from which to grasp the tension between the global and national

Cored Dark Matter halos in the Cosmic Neutrino Background

We study the impact of the interaction between DM and the cosmic neutrino background on the evolution of galactic dark matter halos. The energy transfer from the neutrinos to the dark matter can heat the center of the galaxy and make it cored. This effect is efficient for the small galaxies such as the satellite galaxies of the Milky Way and we can put conservative constraint on the non-relativistic elastic scattering cross section as $\sigma_{\chi\nu}\lesssim 10^{-31} {\rm cm}^2$ for 0.1 keV dark matter and 0.1 eV neutrino.Comment: 7 pages, 5 figure

Emergent localized states at the interface of a twofold PT\mathcal{PT}-symmetric lattice

We consider the role of non-triviality resulting from a non-Hermitian Hamiltonian that conserves twofold PT-symmetry assembled by interconnections between a PT-symmetric lattice and its time reversal partner. Twofold PT-symmetry in the lattice produces additional surface exceptional points that play the role of new critical points, along with the bulk exceptional point. We show that there are two distinct regimes possessing symmetry-protected localized states, of which localization lengths are robust against external gain and loss. The states are demonstrated by numerical calculation of a quasi-1D ladder lattice and a 2D bilayered square lattice.Comment: 10 pages, 7 figure

Malakoplakia of the Kidney Extending to the Descending Colon in a Patient with Secondary Adrenal Insufficiency: A Case Report

Malakoplakia is an uncommon but distinctive type of chronic granulomatous inflammation that occurs most commonly in the genitourinary tract, especially the urinary bladder. Most patients have associated conditions characterized by some degree of immunosuppression, as seen in solid-organ transplants, autoimmune diseases requiring steroid use, chemotherapy, chronic systemic diseases, alcohol abuse and poorly controlled diabetes. We report an unusual case of the renal malakoplakia that involved the perirenal space, extending to the descending colon in a 65-year-old Korean woman with secondary adrenal insufficiency and diabetes mellitus

Two-Dimensional Dirac Fermions Protected by Space-Time Inversion Symmetry in Black Phosphorus

We report the realization of novel symmetry-protected Dirac fermions in a surface-doped two-dimensional (2D) semiconductor, black phosphorus. The widely tunable band gap of black phosphorus by the surface Stark effect is employed to achieve a surprisingly large band inversion up to ~0.6 eV. High-resolution angle-resolved photoemission spectra directly reveal the pair creation of Dirac points and their moving along the axis of the glide-mirror symmetry. Unlike graphene, the Dirac point of black phosphorus is stable, as protected by spacetime inversion symmetry, even in the presence of spin-orbit coupling. Our results establish black phosphorus in the inverted regime as a simple model system of 2D symmetry-protected (topological) Dirac semimetals, offering an unprecedented opportunity for the discovery of 2D Weyl semimetals

Surgical experience of pericardial mesothelioma presenting as constrictive pericarditis

SummaryWe report two cases, which had been initially diagnosed with constrictive pericarditis but later were definitely diagnosed with mesothelioma after receiving pericardiectomy. The two patients complained of dyspnea. Chest computed tomography showed mild pericardial effusion and thickened pericardium, which was found enveloping the heart without any lumps. Pericardiectomy (phrenic nerve to phrenic nerve) was performed and post-operative histology confirmed malignant mesothelioma. One patient had recurrence near the pericardium at 7 months post-operatively and died at 11 months post-operatively. Another patient, after receiving chemotherapy, is still alive at 16 months post-operatively. We consider that pericardial mesothelioma, an extremely rare disease exhibiting clinical signs similar to those of constrictive pericarditis, must be diagnosed at the early stage of its onset