• 제목/요약/키워드: CM method

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대상공사의 특성요인 적합도 분석에 의한 공공부문 'CM at Risk 방식' 도입의 타당성 분석 (Feasibility Analysis of Introducing CM at Risk Delivery Method to the Korean Public Construction Industry by Analyzing Attributes of the Projects)

  • 고민혁;김예상;권순욱;진상윤
    • 한국건설관리학회논문집
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    • 제11권2호
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    • pp.3-14
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    • 2010
  • 건설공사의 성공을 위해서는 고도의 사업관리 능력이 절실히 요구되며, 이를 해결하기 위한 방편의 하나로 다양한 CM 발주방식의 필요성이 부각되고 있다. 이와 같은 맥락에서 최근 들어 'CM at Risk 방식'의 도입이 정부 차원에서 모색되고 있으나 이를 위해서는 그것이 국내 건설 산업과 도입 대상이 되는 공공건설공사의 특성에 적합한가, 또 제도 도입 시 본연의 장점을 최대한 살릴 수 있는 가에 대한분석이 선행되어야한다. 따라서 본 연구에서는 'GM at Risk 방식' 도입 전, 그 대상공사의 특성 및 각 공공공사 유형별 사업특성과의 적합도를 분석하여 본 발주방식 도입의 타당성을 분석하였다. 이를 위해 공공시설물의 유형을 9가지로 구분하고 'CM at Risk 방식'의 일반적 인 특성과 'CM at Risk-GMP 방식', 'CM at Risk 방식-실비정산 방식'에 대한 특성요인 15가지를 도출하였으며, CM업계의 전문가를 대상으로 설문조사를 실시하여 각 유형에 대한 적합도를 분석하였다. 그 결과 설문에 응답한 CM전문가들은 'CM at Risk 방식'의 도입에 부정적인 인식을 가지고 있지는 않은 것으로 나타났지만, 공공공사에 대한 'CM at Risk 방식'의 적용은 공기단축에 대한 필요성 부재나 발주자의 제한된 재정능력 등, 기존 국내 공공공사의 특성으로 인하여 극히 제한적일 것으로 분석되었다.

Effects of Single-Row Transplantation on Improving Strawberry Growth and Marketable Yield

  • Park, Gab-Soon;Kim, Young-Chil;Ann, Seoung-Won
    • 한국환경과학회지
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    • 제25권6호
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    • pp.749-756
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    • 2016
  • This study shows how the growth of the top part of plants cultivated using the single-row strawberry method, with 12 cm plant spacing, as well as that of plants cultivated through conventional planting, is characterized by the presence of many leaves in the first flower cluster harvest. The leaf area and crown diameter were the largest in the 12 cm spacing method. The hight top fresh weight (59.2 g) was detected wen the 12 cm spacing method was used followed by conventional planting and, 9 cm and 6 cm spacing method. The K and Ca contents in the first flower cluster were the highest when the 12 cm spacing method (2.0% and 2.1%, respectively) and conventional planting, (0.42% and 0.86%, respectively) were used, and these values were significantly higher than the K and Ca contents obtained using the other two methods. The N, P, Mg, Fe, and B contents show no significant differences across the planting methods. The sugar content of the first flower cluster fruits was the highest when the 12 cm spacing method was used, while the sugar content of the fourth flower cluster fruits was highest after conventional planting. Firmness was the highest in the first, third, and fourth flower clusters after conventional planting, while no significant differences were observed for the 6 cm, 9 cm, and 12 cm spacing methods. A yield of 25 g or above during November to December was observed to be the highest when the 12 cm spacing method was used, while a yield of 10-16 g was the highest when both the 9 cm and 12 cm spacing methods werw used. The yield of products in January-April was the highest when the 12 cm spacing and conventional planting methods were used, and total product yield was also the highest for these methods. A significant portion of non-marketable products (39 g) was obtained when the conventional planting method was used.

턴키사업과 CM의 역할 (A Study on the Role of Construction Management in the Construction Turn-Key Projects)

  • 김경남;김종훈
    • 한국건설관리학회:학술대회논문집
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    • 한국건설관리학회 2002년도 학술대회지
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    • pp.223-232
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    • 2002
  • 정부에서는 건설사업관리에 대한 법적 근거를 마련한 이후 후속적인 제도보완과 함께 시범사업을 선정하는 등 제도의 정착과 활성화에 노력하고 있다. 그러나 턴키사업에서 CM방식 적용의 경우 설계와 시공이 단일 책임 하에 이루어지는 계약의 특성상 CM 역할의 일부가 제한되고 현행 $\lceil$건설사업관리업무지침$\rfloor$에 턴키사업의 특성이 반영되지 않아 적용상의 어려움이 예상된다. 턴키사업은 그간의 적용을 통해 다양한 문제가 도출되고 있으며, 우리나라의 $\lceil$건설사업관리업무지침$\rfloor$은 미국CMAA의 CM서비스를 비교하여 그 내용이 포괄적이고 CM의 선계이전단계업무의 중요성을 간과하고 있다. 턴키사업에서 CM의 역할을 공사착공 이전까지를 연구범위로 '입찰준비단계', '입찰단계', '실시설계단계', '계약단계'로 구분하여 CM 업무를 규정하고, 제도상의 보완책을 제시하였으며 턴키사업의 CM 역할은 정서적 역할과 전문적 역할로 구분하여 그 내용을 고찰하여 CM적용을 통해 현행 턴키사업의 문제점에 대한 보안방안을 제시하였다.

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민간 프로젝트에서의 발주방식에 따른 CM효과 분석에 관한 사례연구 -전통적 방식과 발주자형 CM을 중심으로- (A Case Study on the CM Effect Analysis According to Project Delivery Methods in Private Projects)

  • 이희창;김영일;김용수
    • 한국건설관리학회:학술대회논문집
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    • 한국건설관리학회 2003년도 학술대회지
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    • pp.278-281
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    • 2003
  • 본 연구의 목적은 건설 사업관리를 적용하여 진행되었던 민간프로젝트 중 전통적 방식과 발주자형CM의 사례를 대상으로 CM 효과를 분석하고자 한다. 연구의 진행은 문헌을 통한 이론적 고찰과 사례분석을 통하여 이루어 겼다. 이와 같은 과정을 통하여 도출된 결론을 요약하면 다음과 같다. 1)전통적 방식과 발주자형 CM을 종합할 때 업무 분야에서 발주자형 CM이 매우 우수한 것으로 분석되었다. 2)발주자형CM은 기획관리, 설계관리, 품질관리가 대체적으로 우수하게 나타났으며, 전통적 방식예서는 상대적으로 모든 업무분야에서 미흡한 점으로 분석되었다.

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급속건조법(急速乾燥法)에 의한 은수원사시재(材)의 인공건조(人工乾燥)스케쥴 개발(開發) (Development of Kiln Drying Schedule of Hydrid Aspen (Populus alba × glandulosa) by Oven Drying Method)

  • 이형우
    • Journal of the Korean Wood Science and Technology
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    • 제15권2호
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    • pp.113-119
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    • 1987
  • A study was conducted to determine the kiln drying schedule for hydrid aspen, This kiln drying schedule was found by oven drying method and developed by pilot testing of 2.0cm, 2.5cm, 3.0cm-thick green lumber. The results of this study were as follows: 1. Kiln drying schedule developed by oven-drying method was $T_{12}-E_5$ for 2.5cm-thick green lumber. 2. Drying times for 2.0cm-thick green lumber(127.0 percent moisture content) to 7.3 percent moisture content, for 2.5cm-thick green lumber(95.0 percent moisture content) to 9.7 percent moisture content, and for 3.0cm-thick green lumber(118.5 percent moisture content) to 10.0 percent moisture content were 45 hours, 45 hours, and 54 hours, respectively. 3. Drying rate from 90 to 10 percent moisture content of 2.5cm-thick lumber was about 0.7 times faster than that of 2.0cm-thick lumber and about 1.1 times faster than that of 3.0em-thick lumber. 4. End checks for 2.0cm-, 2.5cm-, and 3.0cm-thick green lumber occurred 95, 74 and 100 percent moisture content, respectively and reached maximum amount in 53, 41, and 60 percent moisture content, respectively. 5. No surface check and no honeycomb occurred. 6. Cupping and collapse slightly occurred and the quality of dry lumber was first.

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패션 CAD 시스템을 활용한 성인남성의 타이트 핏 토르소원형 설계방법 연구 - 휜체형과 숙인체형을 중심으로 - (A study on the design method of tight fit Thorso patterns for adult males using fashion CAD system - Focusing on the sway back somatotype and the bend forward somatotype -)

  • 홍은희
    • 한국의상디자인학회지
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    • 제23권4호
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    • pp.149-166
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    • 2021
  • This study tried to suggest a drafting method to draft tight fit torso patterns suitable for adult males with a sway back somatotype and a bend forward somatotype by setting and distributing the ease through the completion of the somatic surface pattern using the 3D body surface segment method. It was intended to be presented as a drafting method. As for the research method, the suitability of the somatic surface patterns and the tight fit torso patterns were confirmed by the evaluation of virtual wear, and the patterns were modified and supplemented. The research results are as follows. In the first evaluation of the tight fit torso patterns, the average, for 55 evaluation items, was 3.92 points for the sway back somatotype and 3.89 points for the bend forward somatotype. In the second evaluation, the bend forward somatotype was 4.51 points and the sway back somatotype was 4.62 points. The chest circumference ease amount for the bend forward somatotype and the sway back somatotype are 6.5% (6.8 cm) and 7% (6.8 cm) of the chest circumference, respectively, and the distribution of the front and back ease is the same at 4:6 (2.72 cm:4.08 cm). The waist circumference ease amount is 6.5% (5.8cm) and 6.5% (5.6 cm) of the waist circumference dimensions, and the distribution of the front and backease are 5:5 (1.45 cm: 1.45 cm) and 4:6 (2.24 cm: 3.36 cm), respectively. The completed tight fit torso patterns were converted into institutional formulas and presented as a drafting method.

Brezing-Weng 다항식족을 이용한 페어링 친화 아벨 곡면의 CM 파라미터 생성법 (A generating method of CM parameters of pairing-friendly abelian surfaces using Brezing-Weng family)

  • 윤기순;박영호;장남수
    • 정보보호학회논문지
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    • 제25권3호
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    • pp.567-571
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    • 2015
  • Brezing과 Weng은 페어링 친화 타원곡선의 CM 파라미터들을 수체(number field)의 다항식 표현을 이용하여 생성하는 방법을 제안하였고, Freeman은 그 방법을 아벨 다양체(abelian variety)의 경우로 일반화 시켰다. 본 논문에서는 특히 단순 아벨 곡면(simple abelian surface)의 경우에 대해 Brezing-Weng 방법에서 사용되는 다항식족(polynomial family)을 구하는 새로운 공식들을 유도하고, 이를 이용하여 CM 파라미터들을 생성할 수 있음을 보인다.

초음파검사에 의한 간 크기 측정방법 및 정상 성인의 체격지수별 참조범위 (Liver Size Measurement Method by Ultrasonography and Reference Range based on Normal Adult Physique Index)

  • 김용균;한동균
    • 대한방사선기술학회지:방사선기술과학
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    • 제41권1호
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    • pp.13-24
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    • 2018
  • Liver size is an important component in the diagnosis and follow-up of diffuse liver disease when testing for liver disease using ultrasonography. However, difficulties lies in determining the presence of hepatomegaly and liver atrophy because the method used for measuring liver size differs from one examiner to another and there is no relevant standard based on body build. The present study aims to propose a more objective method for liver size measurement and a reference range based on body build. A total of 260 normal adults (130 males, 130 females) participated in the study. Ultrasonography was performed in all participants to measure the size of the right lobe, left lobe, quadrate lobe, and caudate lobe of liver. Based on Physique Index(PI), a value derived from multiplying weight(kg) by height($m^2$), size of physique was divided into three groups including Group I with PI<150, Group II with $150{\leq}PI{\leq}250$, and Group III with PI>250. Thus, mean liver size by PI and a reference range with 95% reliability were suggested. The superoinferior diameter of right lobe was $12.34{\pm}1.18cm$ in males and $11.07{\pm}0.93cm$ in females, and its reference range was 10.64~11.0cm for Group I, 11.78~12.12cm for Group II, and 13.02~13.84cm for Group III. The anteroposterior diameter(T) of left lobe was $5.93{\pm}1.09cm$ in males and $5.18{\pm}0.99cm$ in females, and its reference range was 4.77~5.17cm for Group I, 5.49~5.79cm for Group II, and 6.68~7.44cm for Group III. The transverse diameter was $3.51{\pm}0.60cm$ in male participants and $3.42{\pm}0.49cm$ in female participants and its reference range was 3.29~3.51cm for Group I, 3.36~3.55cm for Group II, and 3.52~4.0cm for Group III. The caudate lobe index was $11.65{\pm}2.88cm^2$ in males and $9.62{\pm}2.18cm^2$ in females and its reference range was $8.83{\sim}9.75cm^2$ for Group I, $10.62{\sim}11.47cm^2$ for Group II, and $11.89{\sim}14.26cm^2$ for Group III. As a basic measurement method of liver size, the present study suggests measuring the superoinferior diameter for right liver lobe, the anteroposterior diameter for left liver lobe, the transverse diameter for quadrate lobe, and the caudate lobe index for caudate lobe. It is expected that this method along with its relevant reference range can be used as useful indicators in determining hepatomegaly and liver atrophy upon the diagnosis and follow-up testing of diffuse liver disease.

CM단장 핵심역량 발굴에 관한 연구 (Identification of Core Competencies of Construction Managers)

  • 김동희;김한수
    • 한국건설관리학회논문집
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    • 제12권6호
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    • pp.93-100
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    • 2011
  • CM시장이 성장하면서 CM기업의 수도 증가하고 기업 간의 경쟁이 심화됨에 따라 경쟁력 향상을 위한 노력이 필요하게 되었다. 특히 유능한 CM단장을 보유하는 것은 CM기업의 경쟁력 향상을 위한 중요한 현안으로 인식되고 있다. 본 연구의 목적은 CM조직의 리더이자 발주자 만족과 프로젝트 성공을 위해 중추적인 역할을 담당하는 CM단장에게 요구되는 핵심역량을 발굴하는 것이다. CM단장에게 요구되는 역량은 다양하지만 문제해결능력, 신뢰도, 협상능력 등이 가장 중요한 핵심역량으로 나타나고 있다. CM단장 핵심역량에 대한 이해는 우수한 CM단장 육성과 CM단장의 자기계발을 위해 중요하며 궁극적으로는 CM기업의 경쟁력 향상을 위한 중요한 전제조건이다.

3D 체표면 분할 전개방법에 의한 성인 남성 밀착원형 설계 (Development of tight-fit patterns for adult males according to the 3D body surface segment method)

  • 홍은희
    • 복식문화연구
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    • 제28권1호
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    • pp.1-14
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    • 2020
  • This study is based on a representative body shape drawn from previous studies that classify adult male torso shapes. In this study, a design method is proposed by developing a tight-fit pattern that can be easily developed into various items and designs using the body surface development figure. This is obtained by converting the 3D body shape of the model representing the representative body shape. The specific design method was conducted as follows. Actual measurement values were used for waist back length, waist-to-hip length, shoulder length. The scye depth was determined as C/4-1.7 cm, and the front and back Interscye was set at (1/2 × actual measurements)-0.2 cm. The front-back neck breadth was set to (1/5 × base neck circumference)-1.3 cm and (1/5 × base neck circumference) cm. The front-back neck depth was set to (1/5 × base neck circumference)-1.2 cm and 3.5 cm. Front chest circumference was C/4-1 (front-back difference)cm; (1/4 × back chest circumference) was C/4 + 1 (front-back difference) + 0.3 (dart amount) cm. Front waist circumference was W/4-0.2 (front-back difference) + 2.2 (dart amount) cm; back waist circumference was W/4 + 0.2 (front-back difference) + 2.5 (dartamount) cm; front hip circumference was H/4 + 0.2 (ease) + 0.2 (front-back difference) cm; and back hip circumference was H/4 + 0.2 (ease)-0.2 (front-back difference) cm; Front droop was 1.6 cm. The newly developed tight-fit pattern is expected to be of great use as a basis for garment construction.