연속압입 시험기법을 이용한 석유화학설비 경년손상의 새로운 평가변수 고찰

장재일,최열,손동일,이윤희,권동일,김정태,Jang, Jae-Il,Choi, Yeol,Son, Dongil,Lee, Yun-Hee,Kwon, Dongil,Kim, Jeoung-Tae 대한기계학회 2002 大韓機械學會論文集A Vol.26 No.5

Newly developed continuous indentation technique has made nondestructive assessment of tensile properties possible. The present study was undertaken to determine new parameters for indicating time-dependent material degradation of petro-chemical plant. Continuous indentation tests were performed for Cr-Ni steel and Cr-Mo steel which are widely used as facilities of petro-chemical plant. From the results, it was found that yield strength and tensile strength cannot be used as general degradation parameters because the changes in the strengths with aging time didn't show any tendency. On the other hand, work hardening exponent and yield ratio showed consistent tendency with increasing aging time. Therefore, nam attention of this work was paid on them as new degradation parameters, and the in-field applicability of the parameters was evaluated and discussed.

단엽해석함수에 관한 고찰

장재일 東亞大學校 1967 東亞論叢 Vol.4 No.-

It is easy to obtain an upper bound for the Schwarzian differential parameter [ω,z] ny a simple transformation of the classical inequality l a₁l≤1 valid for functions ω=f(z)= z??+a₃ +a₁z+...schlicht in the unitcircle. Indeed applying this inequality to the coefficient of z in the expantion of some schlicht function g(z), we obtain l{ω,z}l≤6(1-lzl²)??. In this thesis we shall show that by replacing the number 6 in inequality by 2 this necessary condition for the schlichtness of f(z) in lzl<1 becomes sufficient.

지방도시의 사전협상제도 도입과 관련한 쟁점 연구

장재일 한국도시부동산학회 2024 도시부동산연구 Vol.15 No.1

The purpose of this study is to examine the applicability of the pre-negotiation system, which is a means of recovering development profits resulting from urban planning changes in local cities. To this end, the operational guidelines of local governments implementing the pre-negotiation system were compared, and issues related to the introduction of the system in local cities were reviewed. Although each issue was derived through interviews targeting specific cities, it was of common interest to local governments with development potential in non-urban areas. Through this review process, it was found that the pre-negotiation system can be used as an appropriate means of recovering development profits generated in non-urban areas, and the study was able to promote local governments' understanding of the introduction of the prior negotiation system.

대구의 특구 운영 실태에 관한 연구 - 특구간의 연계성을 중심으로

장재일 한국도시부동산학회(구 도시정책학회) 2015 도시부동산연구 Vol.6 No.1

The city of Daegu has six kinds of special zones- Educational Globalization Special Area, Local specialization development zone, Free Economic Zone(FEZ), Innopolis, Innocity, Medivalley. Some areas are designated as a special zone, while two or three special zones can overlap each other. Overlapped special zones are able to have a synergy effect. But it appears that the overlapping of special zone is ineffective in Daegu. An excess of special zone is being pointed out. Organizations for managing the special zones don't work closely with each other. And people are confused because organizations where people have to visit for public service vary in different localities. As the result, this study shows the following implications. 1) special zones should be designated to create a synergy effect in relation with other special zones. 2) special zones should not be designated until the long-term development direction of city is considered carefully. 3) Daegu should have a organization which handles everything that has to do with foreign investment.

Advanced Indentation System을 이용한 천연가스배관 용접열영향부의 응력-변형률 변화 특성 분석 ( Evaluation of Stress-Strain Characteristics of Weldment in Natural Gas Pipeline Using Advanced Indentation System )

장재일,손동일,권동일,김우식,박주승 대한기계학회 2001 대한기계학회 춘추학술대회 Vol.1 No.1

Cr-Mo 강의 열화도 평가를 위한 Advanced Indentation System의 응용 ( Application of Advanced Indentation System for Evaluati Tensile Property Degradation of Cr-Mo Steel )

장재일,최열,이윤희,권동일,김정태 대한기계학회 2001 대한기계학회 춘추학술대회 Vol.1 No.1

수인한도를 고려한 공공보행통로의 계획기준 설정에 관한 연구 : 대구광역시의 아파트건설사업 지구단위계획을 중심으로

장재일 한국도시부동산학회(구 도시정책학회) 2018 도시부동산연구 Vol.9 No.3

대구광역시 상업지역 면적의 적정성 연구

장재일 사단법인 인문사회과학기술융합학회 2019 예술인문사회융합멀티미디어논문지 Vol.9 No.9

This paper tried to examine the optimal area of commercial districts in Daegu. In order to achieve this goal, the required area for commercial lands in “2030 Daegu's Urban Master Plan” was reviewed. Next, the area of commercial lands were calculated by the indices of new town planning and the methods of purchasing power. And by comparing the current land use designation with other cities, it was judged whether the commercial districts of ​​Daegu city is appropriate. As a result, the area of ​​Daegu's current commercial districts was never insufficient, and it was confirmed that the land use of the commercial districts was not intensive. Using these results, this paper suggests implications for the management of Daegu’s urban spatial structure and suggests a future direction for the maintenance of the zoning system. Limited land resources should be used effectively by allocating commercial districts and developing low-density land in existing commercial districts rather than adding additional commercial districts 본 연구는 대구광역시 상업지역의 적정면적을 검토하기 위한 연구이다. 이를 위해 우선 도시기본계획에서 적용하고 있는 상업용지 소요면적 산정방식의 문제점을 파악하고, 신도시계획에서 활용하고 있는 계획기준에 의한 방법과 상권구매력에 의한 방법을 적용하여 상업용지의 면적을 산출해 보았다. 아울러 현재의 용도지역 지정 현황을 타도시와 비교‧분석함으로써 대구광역시의 상업지역 면적이 적절한지 여부를 판단하였다. 그 결과, 대구의 현재 상업지역 면적은 결코 부족하다고 볼 수 없었으며, 오히려 상업지역내 상업용도의 이용이 집약적이지 못함을 확인할 수 있었다. 이를 통해 대구광역시의 도시공간구조 관리를 위한 시사점을 도출하며, 향후 용도지역의 정비를 위한 방향을 제안한다. 효과적인 공간구조체계관리 및 지역활성화를 위해서 상업지역을 추가적으로 확대 지정하기보다 상업지역의 배치를 조정하거나 기존 상업지역 내 저이용 토지를 적정밀도까지 개발토록 함으로써, 제한된 토지자원을 효율적으로 활용할 수 있는 방안을 마련하는 것이 필요하다.

해석직교함수에 관한 고찰

장재일 東亞大學校 1964 東亞論叢 Vol.2 No.2

The theory of analytic functions of a complex variable occupies a central place in analysis. In this thesis some main features and analyticity to the orthogonal functions of a complex variable have been treated in the following order of chapters: (1) Difinition. (2) Complete orthonomal functional sequence. (3) Maximum problems. (4) Expantion of the function. (5) Minimum problems. (6) Additional remarks.

부동산중개업 매출 및 현황 분석

장재일,오은주 사단법인 인문사회과학기술융합학회 2017 예술인문사회융합멀티미디어논문지 Vol.7 No.5

In this paper, important implications were sought to keep the real estate brokerage market by analyzing the factors affect the total income of real estate business. In order to achieve the study goals, the related literature were reviewed and a survey was conducted with the real estate agents. The data such as currents trends of real estate market and sales amounts of real estate agencies were collected. Through the literature review, real estate related factors of the regions such as the price of the house, population, number of house holders were analyzed, and through the survey, the general trends of real estate market and the total sales amounts of the last year were analyzed. The factors that affect the real estate business were divided into regional and individual ones. According to the multi regression analysis, regional factors did not affect the sales of real estate agencies, and individual factors such as fixed capital, number of employees, realtor’s education level, experiences, and working hours affect the sales amount of the real agencies 본 연구에서는 부동산 중개업의 매출에 영향을 미치는 요인들을 분석하고 실제 중개업을 영위함에 있어 필요한 시사점을 도출하고자 하였다. 연구의 목적을 달성하기 위하여 문헌조사와 설문조사를 통해 부동산중개업의 일반현황 및 매출 현황 등의 자료를 수집하였으며, 관련 문헌의 실증 분석을 통하여 전국의 부동산 산업과 관련된 지역적 요인을 파악하였고 전국의 개업공인중개사를 대상으로한 설문 조사를 통하여 부동산 중개업의 일반현황 및 지난 1년간의 매출 현황을 파악하였고 중개업 매출에 영향을 미치는 요인을 지역적 요인과 개별적 요인으로 나누어서 분석을 진행하였다. 지역요인의 중개업매출에 대한 영향 분석시, 인구수, 공시지가총액과 중개업체수는 다중공선성이 나타나 중개업체수만을 변수로 채택하였으며, 1인당지역내총소득 및 지가상승률 변수는 다중공선성이 나타나지 않아 분석에 포함시켰다. 이에 대한 회귀분석 결과, 모든 변수들이 통계적으로 유의하지 않는 것으로 나타났다. 다중회귀분석 결과, 지역적 요인들은 중개업 매출에 영향을 미친다고 볼 수 없었으며, 개별적 요인 중에서는 중개사무소의 고정자본, 직원수와 함께 중개사의 학력, 경력, 근무시간이 매출에 영향을 미치는 것으로 파악되었다.