• Title/Summary/Keyword: BIG4

Search Result 3,614, Processing Time 0.031 seconds

A STUDY ON THE TECHNOLOGY LEVEL AND ITS DEVELOPMENT STAGE OF KOREAN CONSTRCUTION INDUSTRY (우리 나라 건설산업의 기술수준 및 기술개발 단계와 건설기술발전 방향)

  • 박병무;이태식
    • Journal of Technology Innovation
    • /
    • v.2 no.1
    • /
    • pp.170-190
    • /
    • 1994
  • The importantce of a development of competitiveness in domestic construction industry is growing as some of domestic construction markets is scheduled to open to foreign competing firms with higher level of construction technology and management. A national level of competitiveness in domestic construction industry and firms are partially, but significantly, affected by a technology level and a characteristics of production pattern. The purpose of the study is mainly to analyze and identify a technology level, production pattern and a development stage of R&D activities of domestic construction industry and firms. Based on these findings the study draws on a concluding remarks and derives technology policy implications. Results of analysis in the study impliy that (1) competitiveness of domestic construction firms(industry) in terms of technology level is relatively weak as compare to that of advanced foreign competing firms, (2) degrees of substitution of capital for labor are seemed to be relatively high, (3) R&D (investment) activities of domestic construction firms are generally spread out in forms of import, adjustment and betterment, and (4) only a small number of big domestic construction firms are seemed to afford to R&D investment for research facilities and equipments, but not enough for higher level of R&D man-power. The study suggests that technology policy for construction industry should be based on a fundamental policy directions. For example the increase in size and heightened quality level of R&D man-power should be placed in a top priority in policy agenda. Sound and specific policy items should be developed for planning and design, and maintenace and inspection technology in order to lead domestic industry to compete with foreign firms with full strength.

  • PDF

Characteristics of Washed-off Pollutants and Dynamic EMCs in a Parking Lot and a Bridge during Storms (주차장 및 교량지역의 강우유출수내 비점오염물질의 특성 비교 및 동적 EMCs)

  • Kim, Lee-Hyung;Lee, Seonha
    • Journal of Korean Society on Water Environment
    • /
    • v.21 no.3
    • /
    • pp.248-255
    • /
    • 2005
  • Since the water quality of drinking water sources has been recognized as a big issue, the ministry of Environment in Korea is designing the total maximum daily load (TMDL) program for 4 major large rivers. The TMDL program can be successfully performed as controling the nonpoint pollutants from watershed area near the river. Of the various landuses in nonpoint pollution, parking lots and bridges are stormwater intensive landuses because of high imperviousness and high pollutant mass emissions from vehicular activities. Vehicle emissions from those areas include different pollutants such as heavy metals, oil and grease and particulates from sources such as fuels, brake pad and tire wear, etc. Especially the pollutant washed-off from the landuses are directly affecting to the river water quality. Therefore this research was conducted to understand the magnitude and nature of the stormwater emissions with the goal of quantifying stormwater pollutant concentrations and mass emission rates of pollutants from parking lot and bridges in Korea. In Kongju city areas, two monitoring sites were equipped with an automatic rainfall gages and an automatic flow meter for accumulating the useful data such as rainfall, water quality and runoff flow. This manuscripts will show the concentration changes during storm duration and EMCs to characterize the concentration profiles in different land uses. Also the first flush criteria will be suggested using dynamic EMCs. The definition of dynamic EMC is a new approach explaining the relationship of EMC and first flush effect.

Studies on the Components of Korean Panax Ginseng C.A. Mayer -Part. I On the Content of Starch, Size Frequency Distribution of Starch Granules, Amylose Content and Blue Value- (한국인삼 성분에 관한 연구 -제1보 전분함량, 전분의 입경분포, amylose함량 및 blue value에 대하여-)

  • Kim, Hai-Jung;Nam, Sung-Hi;Kim, Hyong-Soo;Lee, Suk-Kun
    • Korean Journal of Food Science and Technology
    • /
    • v.9 no.1
    • /
    • pp.19-23
    • /
    • 1977
  • The variation of the amount of starch, size and shape of the starch granules, amylose content, and blue value of the starch in the Korean ginseng roots from one year old to five year old cultivated at Kumsan was studied. The results obtained were as follows; 1) The starch content of the ginseng root(dried) was increased with the age of the root; that is, 9.62% for one-year-old roots, 10.35% for two-year-old root, 15.50% for three-year-old root, 17.05% for four-year-old root, and 18.32% for five-year-old root. 2) The shape of the ginseng starch granules was round or short oval, and in the latter case the ratio of minor axis to major axis was 1 to 1.1. Diameter of the starch granules was in the range of $1.48\;{\mu}\;to\;8.14\;{\mu}$ and the most frequent granule size was $3\;{\mu}\;(32.1{\sim}35.7%)$. The number of big size starch granules was increased during the five years of growing, while, the number of small size granules was decreased. 3) The amylose content in the ginseng starch was varied with the age of the root, in the range of $53.6{\sim}70.5%$. 4. The blue value of the ginseng starch was in the range of 0.60 to 0.71.

  • PDF

A Comparative Analysis of the Lower Body Trunk for Men's Slacks Pattern Design according to by Age-groups - Focused on Ningbo City, Zhejiang Province - (중국 남성의 슬랙스 패턴설계를 위한 연령층별 하반신 체간부 비교 분석 - 절강성 영파 지역을 중심으로 -)

  • Suh, Chu-Yeon;Lee, So-Young;Shim, Boo-Ja
    • Journal of Fashion Business
    • /
    • v.13 no.4
    • /
    • pp.124-136
    • /
    • 2009
  • This study was focused on classifying lower-body trunk and revealing the lower-body characteristics of the Chinese males in their 20s through 40s for their slacks pattern design. Compared with the 20s, the subjects in their 30s and 40s had small vertical and big horizontal sizes and showed a somatotype difference through a horizontal change. According to the size of absolute values, the lower body of Chinese men was "tall and normal trunk"(43.9%). Based on the shape of index values, Type 3(40.3%) was representative with average hip-surface length, waist-hip width difference and long upper hip. While Type 3 was seen a lot in the 20s(51.8%), 30s and 40s were each represented by Type 2(47.1%) with the smallest waist-hip width difference, average upper hip, and long hip-surface length and Type 1(45.9%) with small waist-hip width difference, average upper hip, and short hip-surface length. As this study is confined to Ningbo City of Zhejiang Province and has a small number of subjects, the generalization of the findings should be more serious. Further research will be centered on the development of slacks patterns in consideration of the body type changes.

Comparison of basic bodice block for adults women by 3D simulation - focus of the DC Suite Program - (3차원 시뮬레이션을 활용한 성인여성용 길 원형 비교 연구 - DC Suite Program을 중심으로 -)

  • Cha, Sujoung;Kang, Yeonkyung
    • Journal of Fashion Business
    • /
    • v.17 no.2
    • /
    • pp.63-81
    • /
    • 2013
  • A Study using compare and analyze about differences among three patterns(shape and size of pattern, fitting and amount of air gap and so on) through 3D simulation. This study use 3D simulation program, DC Suite version 3.0. The results are as a follows: The results of estimation about total appearance, the pattern of Bunka is best of all pattern about total fitting and silhouette of front and back side. The pattern of armstrong and on&on stand low in estimation. As the total fitting, the pattern of Bunka is 4.40, the pattern of Armstrong is 2.60 and the pattern of On&on is 1.60. The result show better pattern of Bunka than pattern of Armstrong and On&on. When we examine about space between body and cloth, the pattern of Bunka is best. The pattern of Armstrong don't have problems about back side but front side have some problem of getting loose. Because it only have a waist dart so dart size is too big. The pattern of On&on have so much space because it don't have a waist dart. On the amount of air gap, the pattern of Bunka squash up body so it have the amount of air gap 0.08 at bust circumference and underbust circumference. Next is the pattern of Armstrong, amount of air gap is 0.14 at bust circumference and 0.23 at underbust circumference. The pattern of On&on's amount of air gap is 0.30 at bust circumference and 0.37 at underbust circumference. So the pattern of Bunka is bodice block of the best closing adhesion and the On&on is a loose-fitting pattern.

Quality properties on soy bean pastes made with microorganisms isolated from traditional soy bean pastes (전통된장으로부터 분리한 균종으로 제조된 된장의 품질특성)

  • Yoo, Seung-Ku;Kang, Su-Min;Noh, Young-Sook
    • Korean Journal of Food Science and Technology
    • /
    • v.32 no.6
    • /
    • pp.1266-1270
    • /
    • 2000
  • Quality properties of soy bean pastes made with Aspergillus oryzae and 5 Bacillus strains isolated from traditional soy bean pastes were examined. The pH decreased gradually and contents of amino-type nitrogen increased during fermentation. There were small differences in moisture and crude-protein contents, whereas big difference was observed in reducing sugar, isoflavones and organic acid contents. Isoflavones in the samples made with Bacillus licheniformis F2358 and Bacillus subtilis F2362 were high. Samples made with Bacillus licheniformis F2382 had high contents of organic acid and good score for taste and overall acceptability in sensory evaluation.

  • PDF

A Study on the Actual Conditions of Brassiere Wearing for Girl Students

  • Sohn, Hee-Soon;Cha, Su-Joung
    • Journal of Fashion Business
    • /
    • v.9 no.6
    • /
    • pp.12-28
    • /
    • 2005
  • The purpose of this study is to help develop high quality brassieres with functionality and comfort, fitting adolescents' physical features during their growth period. This study conducts a comparative analysis of juvenile brassiere and adult brassiere to identify the problems of brassieres in the market. The raw data for this study was processed by SPSS 10.1. The results of this study are summarized as follows: 1. The results of this survey show that the girls' satisfaction of their breasts has correlations between breast protrusion degree and volume. The girls think that if they have protrusive breasts their breast volume is big, and their breast satisfaction level shows high. 2. The results show that the objective of brassiere wearing is to prevent breasts sag and rupture, make good breast shape, balance their entire body shape, and make beautiful outer garment line. Brassiere functions are to prevent jiggle of breasts, make a good body line, and cover the nipples. For the grader school students, they are wearing brassiere to make a good balanced body and as their breasts developed, they are wearing brassiere for beautiful body shape not just to cover up their breasts. 3. In regard to brassiere cup size recognition, as students have higher grade at school, they have better recognition abouxt their cup size. As they are better aware of their cup size, they have better satisfaction with their cup size. Therefore, choosing the right size of brassiere for their bust is very important. 4. Girl students' brassiere preference shows that 317 students (56.9%) prefer white for brassiere colors, following pink and flesh color. Their most preferred brassiere material is cotton (354 people, 63.6%) because cotton is not sensitive even for weak skin. For brassiere style, 273 students (49%) prefer round style, following spots and mold. Their most preferred brassiere style is stake. In addition, brassiere should not press their breasts because their breasts are developing during puberty period.

Trabecular bone Thickness Measurement of Rat Femurs using Zoom-in Micro-tomography and 3D Fuzzy Distance Transform (Zoom-in Micro-tomography와 3차원 Fuzzy Distance Transform을 이용한 쥐 대퇴부의 해면골 두께 측정)

  • Park, Jeong-Jin;Cho, Min-Hyoung;Lee, Soo-Yeol
    • Journal of Biomedical Engineering Research
    • /
    • v.27 no.4
    • /
    • pp.189-196
    • /
    • 2006
  • Micro computed tomography (micro-CT) has been used for in vivo animal study owing to its noninvasive and high spatial resolution capability. However, the sizes of existing detectors for micro-CT systems are too small to obtain whole-body images of a small animal object with $\sim$10 micron resolution and a part of its bones or other organs should be extracted. So, we have introduced the zoom-in micro-tomography technique which can obtain high-resolution images of a local region of an live animal object without extracting samples. In order to verify our zoom-in technique, we performed in vivo animal bone study. We prepared some SD (Sprague-Dawley) rats for making osteoporosis models. They were divided into control and ovariectomized groups. Again, the ovariectomized group is divided into two groups fed with normal food and with calcium-free food. And we took 3D tomographic images of their femurs with 20 micron resolution using our zoom-in tomography technique and observed the bone changes for 12 weeks. We selected ROI (region of interest) of a femur image and applied 2D FDT (fuzzy distance transform) to measure the trabecular bone thickness. The measured results showed obvious bone changes and big differences between control and ovariectomized groups. However, we found that the reliability of the measurement depended on the selection of ROI in a bone image for thickness calculation. So, we extended the method to 3D FDT technique. We selected 3D VOI (volume of interest) in the obtained 3D tomographic images and applied 3D FDT algorithm. The results showed that the 3D technique could give more accurate and reliable measurement.

A Block-Based Volume Rendering Algorithm Using Shear-Warp factorization (쉬어-왑 분해를 이용한 블록 기반의 볼륨 렌더링 기법)

  • 권성민;김진국;박현욱;나종범
    • Journal of Biomedical Engineering Research
    • /
    • v.21 no.4
    • /
    • pp.433-439
    • /
    • 2000
  • Volume rendering is a powerful tool for visualizing sampled scalar values from 3D data without modeling geometric primitives to the data. The volume rendering can describe the surface-detail of a complex object. Owing to this characteristic. volume rendering has been used to visualize medical data. The size of volume data is usually too big to handle in real time. Recently, various volume rendering algorithms have been proposed in order to reduce the rendering time. However, most of the proposed algorithms are not proper for fast rendering of large non-coded volume data. In this paper, we propose a block-based fast volume rendering algorithm using a shear-warp factorization for non-coded volume data. The algorithm performs volume rendering by using the organ segmentation data as well as block-based 3D volume data, and increases the rendering speed for large non-coded volume data. The proposed algorithm is evaluated by rendering 3D X-ray CT body images and MR head images.

  • PDF

Effects Analysis of Electronic Journal Subscription on Special Library Operation : A Case Study in KIST (전자 학술지가 전문도서관 운영에 미치는 영향 분석 : KIST 사례를 중심으로)

  • Kang, Dae-Shin;Shin, Yong-Su;Shin, Mal-Suk;Yoon, Hyea-Jeong
    • Journal of Information Management
    • /
    • v.34 no.3
    • /
    • pp.69-85
    • /
    • 2003
  • This case study analyzed how electronic journal subscription had an effect on special library management including budget, information behavior, library operations, facilities, space et al. in KIST. This study suggests the followings; 1) Since electronic journals has an effect on overall operations of special libraries, draw big pictures not by functions. 2) Though the most method for subscription is consortium, it is necessary to build cooperation network for information sharing and vary cost architecture of information use. 3) Through job analysis, redesign jobs. 4) Reconstruct stacks and facilities. 5) It is necessary paradigm shift that it is more important to use than preserve materials in the special libraries.