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구조적 Programming Language에 관한 연구
나인엽 대구대학교 (한사대학) 산업기술연구소 1982 産業技術硏究 Vol.2 No.1
Programming plays the most basic and important role in the computer system. The approach is also employed to solve the problems involved in the description of demands, specifications, designing, progressive administration, maintenance and training. Therefore, more efficient developmental system and maintenance methods are needed to cope with the problems raised in the course of advancement of the software industry in sophistication and scale. It is believed that the prevention of errors in the process from the analysis of the demands to programming will secure the efficient cycle of the software system. The primary task in this context is how to present the various unknown softwares. Logical control style of the structual programming technique should be standardized after repetative practice of programming so that the system may contribute to the industry by improving the productivity and maintenance.
나인엽,송영재 大邱大學校附設 基礎科學硏究所 1986 基礎科學硏究 Vol.3 No.-
A database is inclusive and concerns itself closely in almost every realm and its theory has been developing rapidly in recent years. For this reason, I try to manifest in this thesis a theory on how to design a relational database among the theories concerning the database, and also to present both various dependencies immediately related with the design of a database and their theoretical relations.
효율적인 host language를 사용하기 위한 data base의 설계
나인엽,송영재 대구대학교 산업기술연구소 1984 産業技術硏究 Vol.3 No.-
The purpose of a data base is to secure various benefits arising from the common possession of data: it can reduce the cost of memorizing and processing data independently; and the whole data, consistently controlled and kept up to date, can be utilized by many. The common possession of data means that a data base is not a system for a single user. Thus self-contained capability and host language interaction should be so designed as to be adapted for the original purpose of a data base: a common utilization of data. This study is to present an efficient method of designing a wide information system and developing it into a consistent whole by every valid means possible.
나인엽,임은복 대구대학교 산업기술연구소 1991 産業技術硏究 Vol.10 No.-
An iterative technique is proposed for the absolute deviations regression of data. At the heart of the technique is any standard least squares curve fitting algorithm. Hence, the resulting regression procedure is computationally sinple, requires less storage and is faster than the linear programming algorithm recently proposed as a solution to this problem. Problems associated with non-unique solutions in least absolute deviations regressions are also discusse.
CODASYL형 Database관리 System에서의 GPLAN의 고찰
나인엽 대구대학교 (한사대학) 산업기술연구소 1987 産業技術硏究 Vol.6 No.-
The purpose of this study is to present the efficient utilization of future GPALAN database management system and it's direction through GPLAN in accordance with Fortran by file operation formation data structure design and database transfer.
지하수 수자원 분포에 관한 조사연구 (경북 달성군 파호동을 중심으로)
나인엽 한국수자원학회 1979 한국수자원학회논문집 Vol.12 No.2
This study has been conducted to find out the location and amount of the subterrain water body developed in the alluvial stratum in Paho-Dong, Sungsee-Myo-n, Dalsung-Kun are. An earlier test drilling was done in this area by R.O.K. Agricultural Promotion
지하수 수자원 분포에 관한 조사연구 (경북 달성군 파호동을 중심으로)
나인엽 한국수자원학회 1979 한국수자원학회논문집 Vol.12 No.2
This study has been conducted to find out the location and amount of the subterrain water body developed in the alluvial stratum in Paho-Dong, Sungsee-Myo-n, Dalsung-Kun are. An earlier test drilling was done in this area by R.O.K. Agricultural Promotion Corporation. The area consists of a small river basin and surrounding low hills developed around the junction of the Nakdong and Kumho Rivers. The strata of this area are made of Paldal gravel, Bokhyundong and Banyawol layers which were formed in the cretaceous period of the Meso-saicera or acid dikes and covered with-irregular alluvial layers. The alluvial layer in this area is composed of rather minute particles and proportional electric resistance tests on this layer show $10^2\;-\;10^3\;\Omega/cm$. The drillings up to 12meters deep showed only the sand layer (Form 3 to 26meters in thickness) contains water. The sand layers can not be considered a good water trapping one. Applying the data from the drillings to A.Hazen's equation, $K\;=\;{cd_e}^2\;(0.7\;+0.03t)$ to get the theoretical value of the water infilterated, I calculated it as K=13.92m/day. And again the value was set to Dupuit equation, (equation omitted) to acquire the pumping water amount the result was $Q_1\;=\;77.20\;\textrm{m}^3/day$. When the data-applied to the equation for pumping water amount, (equation omitted), the results were $Q_2\;=\;122.39\;\textrm{m}^3/day$ and K = 38m/day $Q_1\;and;Q_2$ (tow types of pumping water amount) represent proper value decrease and maximum value decrease respectively. Therefore, $Q_2$ is the least amount of water we can pump. The area covers about $1,555,000\;\textrm{m}^2$ and the maximum water needed in this area amounts to $155,000\textrm{m}^3$. That means we have to drill 1,406 pumping wells. It is concluded that undertaking the project in this area is irrational or even desperate and surface water should be developed more favorably.