• 건축역사연구
• /
• 제28권1호
• /
• pp.7-16
• /
• 2019

As a part of the research on existing structures of private homes from Joseon Era. Focusing on one hundred twenty five-purlin houses, the current study investigated the features and characteristics of the house structure from style, size, proportion and roof pitch, and measurements of key parts, and developed the following conclusions. Most are single-houses (89, 83%), and among them, there are 47 single front-terrace houses (39%), which is the highest number. The sizes of lower house structure do not differ greatly depending on the vertical structure, and single rear terrace house and double-house have relatively larger side sizes. The size of upper structure is larger in double-houses compared to other vertical structures, indicating a relatively higher roof. The cross-section measurement of major parts show that double-houses are larger than single-houses by 3cm in pillar, 3-4.5cm in crossbeam length, and 4.5cm in crossbeam width. However, Janghyeo width was consistent at 7.5 to 10.5cm, maintaining uniformity regardless of vertical structure of the houses. In addition, the cross-section measurements decreased from sixteenth to nineteenth century, with the size of pillar size decreasing the most. The result that the Janghyeo width is not related to the house structure house confirmed that the Janghyeo width was kept consistent regardless of the size of the house structure.

• 유통과학연구
• /
• 제13권9호
• /
• pp.37-45
• /
• 2015

Purpose - This paper's aim is to investigate whether or not gross profitability explains the cross-sectional variation of the stock returns in the Korean stock market. Gross profitability is an alternative profitability measure proposed by Novy-Marx in 2013 to predict cross-sectional variation of stock returns in the US. He shows that the gross profitability adds explanatory power to the Fama-French 3 factor model. Interestingly, gross profitability is negatively correlated with the book-to-market ratio. By confirming the gross profitability premium in the Korean stock market, we may provide some implications regarding the well-known value premium. In addition, our empirical results may provide opportunities for the fund distribution industry to promote brand new styles of funds. Research design, data, and methodology - For our empirical analysis, we collect monthly market prices of all the companies listed on the Korea Composite Stock Price Index (KOSPI) of the Korea Exchanges (KRX). Our sample period covers July1994 to December2014. The data from the company financial statementsare provided by the financial information company WISEfn. First, using Fama-Macbeth cross-sectional regression, we investigate the relation between gross profitability and stock return performance. For robustness in analyzing the performance of the gross profitability strategy, we consider value weighted portfolio returns as well as equally weighted portfolio returns. Next, using Fama-French 3 factor models, we examine whether or not the gross profitability strategy generates excess returns when firmsize and the book-to-market ratio are controlled. Finally, we analyze the effect of firm size and the book-to-market ratio on the gross profitability strategy. Results - First, through the Fama-MacBeth cross-sectional regression, we show that gross profitability has almost the same explanatory power as the book-to-market ratio in explaining the cross-sectional variation of the Korean stock market. Second, we find evidence that gross profitability is a statistically significant variable for explaining cross-sectional stock returns when the size and the value effect are controlled. Third, we show that gross profitability, which is positively correlated with stock returns and firm size, is negatively correlated with the book-to-market ratio. From the perspective of portfolio management, our results imply that since the gross profitability strategy is a distinctive growth strategy, value strategies can be improved by hedging with the gross profitability strategy. Conclusions - Our empirical results confirm the existence of a gross profitability premium in the Korean stock market. From the perspective of the fund distribution industry, the gross profitability portfolio is worthy of attention. Since the value strategy portfolio returns are negatively correlated with the gross profitability strategy portfolio returns, by mixing both portfolios, investors could be better off without additional risk. However, the profitable firms are dissimilar from the value firms (high book-to-market ratio firms); therefore, an alternative factor model including gross profitability may help us understand the economic implications of the well-known anomalies such as value premium, momentum, and low volatility. We reserve these topics for future research.

• 치과방사선
• /
• 제29권1호
• /
• pp.209-221
• /
• 1999

Purpose: The purpose of this study was to calculate the size and CT number of both normal parotid and submandibular gland. and evaluate their relation to sex, age and obesity using computed tomography. Materials and Methods: The computed tomography was performed parallel to the Frankfurt plane in 46 subjects with healthy salivary gland. The subjects were divided into the three groups (young, middle. old) according to their ages. The size of salivary gland was determined as maximum cross-sectional area and the CT number of salivary gland was determined as the mean CT number of three ROI's. The body mass index was calculated from weight and height. Results: The mean maximum cross-sectional area was 7.79(±1.25)cm² on parotid gland and 4.12(±0.83) cm² on submandibular gland. The mean CT number was -4.43(±23.87) HU on parotid gland and 50.01(±15.63) HU on submandibular gland. There was decreasing pattern of the maximum cross-sectional area of submandibular gland and the CT number of both parotid and submandibular gland according to age(p<0.05). As the body mass index increased. the maximum cross-sectional area of parotid gland increased and CT number of both parotid and submandibular gland decreased(p<0.05). The maximum cross-sectional area of submandibular gland in male was larger than that in female(p<0.05). As the maximum cross-sectional area and CT number of left salivary gland increased. those of right gland increased(p<0.05). Conclusion : Intra-individual differences in salivary gland size and CT number is considered in the age and individual obesity.

• 수산경영론집
• /
• 제28권2호
• /
• pp.1-18
• /
• 1997

The purpose of this study is to investigate empirically the characteristics of financial structure by using 76 fisheries corporations in Korea, and to suggest implications of the empirical results for government's financial policy for fisheries corporations. For the empirical test, we choose the following factors as the explanatory variables of cross-sectional regression analysis:firm-size(SIZE), collateral value of assets(TFATA), business risk(BRISK), growth(GROWTH), effective tax(ET), profitability(PROFIT). Two different debt ratios are used as dependent variables. One is defined as the ratio of total debt to total assets and the other is as that of long-term debt to total asset in terms of book value. The sample consists of 76 fisheries firms and sample period is 14 years from 1982 till 1995. From the results of cross-sectional regression analysis, the adjusted R$^2$values were high, 16∼79% and the overall F values indicated to be statistically significant. The results of cross sectional regression analysis show that the characteristics of financial structure fur fisheries corporations are as follows ; (1) Firm-size and collateral value of assets are the major factors of financial structure for fisheries corporations. That is, the larger firm-size the higher is debt ratio. This means that financial institutions conventionally lend more collateral loans with fixed assets like land, building rather than management capacities or credits. (2) To be consistent with a pecking-order theory, the higher is profitability the lower is debt ratio in fisheries corporations. (3) Corporations with high effective tax rate have lower financial leverage. Although the empirical results are inconsistent with traditional static trade-off theory, we think it would be attributed to government's various tax shelterings for fisheries which are likely to reduce tax shield effect of interests.

• 한국진공학회지
• /
• 제10권2호
• /
• pp.275-281
• /
• 2001

플라즈마 반응기 내에서 입자 전하 분포가 Gaussian형태로 표현될 때 전하 분포를 가지는 입자들의 충돌에 의한 입자 성장을 discrete-sectional 모델을 사용하여 이론적으로 고찰하였다. 플라즈마 반응기 내에서 입자 성장을 분석하기 위해 monomer크기, monomer생성 속도 등의 공정 변수들을 변화시켰다. 입자 크기가 40 m이상인 큰 입자들은 플라즈마 반응기내에서 대부분이 음으로 존재하였으며 40 m이하인 작은 입자들은 음성, 중성 혹은 양으로 존재하였다 입자 충돌에 의해 입자 크기가 증가함에 따라 입자 표면적의 증가와 더불어 입자가 가지는 평균 음전하수도 증가하였다. 입자 충돌에 의해 큰 입자들이 생성됨에 따라 입자크기분포는 2개의 모드로 양분화 됐다. 본 연구의 이론 결과와 Shiratani 등 [3]의 실험결과가 비교적 잘 맞았으며 본 연구에서 사용한 모델식은 플라즈마 반응기 내에서 수 나노 크기의 입자 성장 연구에도 활용될 수 있을 것으로 기대된다.

• 건축역사연구
• /
• 제29권6호
• /
• pp.57-65
• /
• 2020

This study covered the Mulmae, architectural drawing recorded on Yeonggeon-uigwes and Sanleung-uigwes during the late Joseon Dynasty. In uigwes, the term 'Mulmae' was used as a mixture until the 17th century, but from the 18th century, the term 'Mulmae(勿乙每, 勿每, 水每)' was unified into 'Mulmae(水每)'. The paper of the Mulmae was made to be used during the construction period by using a thick oil paper called Yudun. Four Yudun were connected, and its size was 197.4×141cm, which was rather large. The Yingzaofashi(營造法式) of Song Dynasty describes how to draw a longitudinal section on a scale of 1/10. The scale of 1/10 was the maximum when comparing the size of the Mulmae with the buildings in uigwes. A sectional drawing of Gongpo in Geunjeongjeon was drawn on a scale of 1/10. There is a testimony that a senior carpenter drew a cross-section on a scale of 1/10. Therefore, it was determined that the scale of the longitudinal section drawn on the Mulmae paper was 1/10. The term 'the Mulmae' was used equally by carpenter active in Japanese colonial era. The scope of the painting was clarified from pillar to rafter. Uigwes records that the Mulmae was made for wood processing. Through this, it can be understood that the Mulmae painted the entire structure as a longitudinal section.

• 한국의류산업학회지
• /
• 제4권2호
• /
• pp.156-162
• /
• 2002

The purposes of this study were to classify somatotype was obtained from the factor scores of the upper half of body and analyze the somatometric characteristics. The sample group was drawn from boys at the ages 9 to 10 living in Pusan and Kyungsangnam-do. Data from each boy comprised 36 anthropometric measurements and 7 photographic measurements. The study reached following conclusions. 1. According to the analysis to draw somatometric factors, seven indicative factors were obtained from measurements of the upper half of body. The most significant factor "sectional size" and the second most significant factor "longitudinal size" characterized most aspects of body shape. 2. According to the analysis of somatometric characteristics by the upper half of body, they were categorized into four types; Boys in type 1 had high stature, broadest shoulders, average frame, flattest chest and quite protruded shoulder blades and belly; boys in type 2 had shortest stature, smallest frame, most sloping shoulders and flattest shoulder blades and belly; boys in type 3 had quite corpulent with average stature, rising shoulders, most protruded chest and shoulder blades and belly of protrusion close to the average; boys in type 4 had highest stature, biggest frame, broad shoulders and back, and most protruded shoulder blades and belly.

• 복식
• /
• 제52권2호
• /
• pp.115-124
• /
• 2002

The purposes of this study were to classify somatotype was obtained from the factor scores of the upper half of bodies and analyze the Somatometric characteristics. The sample group (hereinafter referred to as "1st age group") was drawn from bays at the ages 7 to 8 living in Pusan and Kyungsangnam-do. Data from each boy comprised 36 anthropometric measurements and 7 photographic measurements. The study reached following conclusions. 1. According to the analysis to draw Somatometric factors by the 1st age group, seven indicative factors were obtained from measurements of the upper half of bodies. The most significant factor "sectional size" and the second most significant factor "longitudinal size" characterized most aspects of body shape of boys at the ages 7 to 8. 2. According to the analysis of Somatometric characteristics by the upper half of bodies, the 1st age group was categorized into three types : Boys in type 1 had highest stature, biggest frame, broadest shoulders, most protruded chest and shoulder blades and flattest belly : boys in type 2 had shortest stature, smallest frame, sloping shoulders and most protruded belly boys in type 3 had quite high stature and his other measurements were close to the averages of this age group.he averages of this age group.

• 복식
• /
• 제53권3호
• /
• pp.63-72
• /
• 2003

The purposes of this study were to classify the upper half of body somatotype and analyze the characteristics of each somatotype. The subjects of survey were 272 elementary school boys of 11 to 12 years old living in Pusan and Kyungsangnam-do. Datas were collected through 36 anthropometric measurements and 7 photographic measurements. They were analyzed by factor analysis, cluster analysis and analysis of variance. The results of the study were as follows : 1. According to the factor analysis. seven factors were extracted from measurements of the upper half of body and those factors comprised 79.62% of total variance. Specially factor 1 was characterized sectional size and factor 2 was characterized longitudinal size comprised 58.83% of total variance. 2. According to the cluster analysis, the upper half of body somatotype was classified four types : Boys in type 1 had quite high stature and big frame, broadest and most sloping shoulders, flattest chest and belly, quite protruded shoulder blades boys in type 2 had quite short stature and small frame, quite broad and most rising shoulder, most protruded belly, quite protruded shoulder blades boys in type 3 had shortest stature, smallest frame, narrowest and quite rising shoulders, most protruded chest, flattest shoulder blade and quite flat belly : boys in type 4 had highest stature, biggest frame, most protruded shoulder blades and quite protruded chest and belly.

• Journal of the Korean Wood Science and Technology
• /
• 제41권2호
• /
• pp.141-148
• /
• 2013

The goal of this study was to find the optimum lamina size from red pine (Pinus densiflora) and Japanese cedar (Cryptomeria japonica) logs for the cross laminated timber (CLT) production. From visual inspection of the logs from two species, red pine log showed a larger knot and warp compared to the Japanese cedar. Different cross-sectional sizes of lamina ($110mm{\times}30mm$, $110mm{\times}40mm$, $110mm{\times}50mm$, $50mm{\times}30mm$, $30mm{\times}30mm$) from two species were analyzed for yield and grade. Regardless of the species, the optimized cross sectional size for maximizing the yield was $110mm{\times}30mm$. In grading for the different size laminas from Japanese cedar and red pine, a higher percentage of the first and second grade was found from the $110mm{\times}30mm$ lamina cut.