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Dispersion of Inflation Expectations: Stylized Facts, Puzzles, and Macroeconomic Implications
( Byeong Deuk Jang ),( Young Se Kim ) 한국경제학회 2015 The Korean Economic Review Vol.31 No.1
Building on time-series and cross-sectional properties of survey forecasts, this paper documents a fruitful set of stylized facts of inflation expectations in Korea that a macroeconomic theory must aim to explain. Despite the fact that survey measures of inflation expectations have a similar central tendency, the amount of disagreement among different types of economic agents appears to be substantial and shows no clear relationship with relative price variability. The analysis of micro-level inflation expectations data suggests that inflation uncertainty measured by dispersion of households expectations relies not only on inflation regime but also on relative price variability. Each survey forecast has the ability to explain the path of future inflation, but surprisingly with the wrong direction from the rationality perspectives. Percentile regression analysis yields robust evidence of bounded rationality for the households.
Oral Leiomyosarcoma in a Woodchuck (<i>Marmota monax</i>)
KANG, Byeong-Cheol,JANG, Dong-Deuk,LEE, Sang-Koo Japanese Society of Veterinary Science 2005 The Journal of veterinary medical science Vol.67 No.3
<P>We report the case of a 4-year-old female woodchuck (<I>Marmota monax</I>) which presented with a white, firm and discrete mass in the hard palate. The mass extended into the oral cavity but it was well separated from the surrounding tissues. Histology of the tumor showed a malignant mesenchymal tumor with pleomorphic spindle cells varying in degrees of differentiation and density. The neoplastic cells had moderate amounts of granular or fibrillar eosinophilic cytoplasm with indistinct cell margins. Nuclei were oval to elongated and frequently blunt-ended with vesicular chromatin. Immunohistochemical study showed that the neoplastic cells expressed vimentin and alpha-smooth muscle actin but did not express desmin, pan-cytokeratin, and S-100. Therefore, histology and immunohistochemistry revealed that the tumor was oral leiomyosarcoma. Oral cavity is an extremely rare site for leiomyosarcoma and the present case is the first report of spontaneous oral leiomyosarcoma in animals.</P>
박병준(Byeong Jun Park),장윤득(Yun Deuk Jang) 한국암석학회 2007 암석학회지 Vol.16 No.2
하와이 제도 남단에 위치한 하와이섬의 킬라우에아 화산은 16세기 이래로 1982년 9월까지 계속적이고 간헐적인 분출로 형성된 화산체이다. 킬라우에아 화산 정상부 분화구 지역을 중심으로 야외지질조사, 체계적인 시료채취, 암석기재학 및 지구화학적인 특성분석을 수행하였다. 구성광물로는 주요 반정광물인 감람석을 비롯하여, 단사휘석, 사장석, 불투명광물등의 반정광물과 유리질 기질로 구성된다. 단사휘석과 사장석에서는 취반상조직, 사장석 반정에는 누대구조가 간간히 관찰되었다. 주원소 함량에서 K₂O, P₂O?, TiO₂는 MgO 함량이 감소할 때 증가하는 경향을 보이고 Al₂O₃와 CaO는 변곡점을 보이는데 A1은 사장석, Ca는 사장석과 단사휘석의 결정화와 각각 밀접한 관련이 있는 것으로 해석된다. 감람석의 Fo%값은 60에서 90까지 넓은 변화폭을 가지고 Fo%에 대한 감람석 주원소 값에서 MnO와 FeO는 감소하며 반대로 SiO₂, MgO와 NiO는 증가한다. 킬라우에아 화산 현무암의 Ni함량의 변화는 감람석의 모드 함량과 감람석 결정 내의 Ni함량의 변화에 의하여 규제되는 것으로 생각된다. Kilauea volcano located in the southern part of Hawaii island chains has been formed by continuous and sporadic eruption activities from 16 century to September of 1982. Kilauea volcano was investigated from collecting the samples of basalt to identify the geochemical characteristics of the lavas. Olivine, clinopyroxene, plagioclase, and opaque minerals with glass groundmass are observed. Clinopyroxene formed glomerophopyritic texture with plagioclase and zoning texture was observed in some of plagioclase phenocrysts. Major elements such as K₂O, P₂O?, TiO₂ increased with respect to MgO. Al₂O₃ and CaO show the kink on Harker diagram due to the crystal fractionation of plagioclase and clinopyroxene with plagioclase respectively. Olivine has a wide range of Fo% ranging from 60 to 90, and MnO and FeO in the olivine are decreased with increasing Fo% oppositely increased SiO₂, MgO, and NiO. Ni in the whole rock is controlled not only by the mode of olivine but also by the Ni abondance in the olivine.