Mobile C 컴파일러에서의 에러 복구

오세만,김정숙 한국정보과학회 프로그래밍언어연구회 2001 프로그래밍언어논문지 Vol.15 No.1

重回歸分析에 의한 勞動者 雇傭豫測에 관한 硏究 : 5人以上 事業體 勤勞者 中心으로 Based on the Employees in the Working Places which have 5 or more full-time Workers

吳世萬,李秉源 동국대학교 경영대학원 1991 經營論叢-東國大學校 經營大學院 Vol.15 No.-

The purpose of this study is to forcast the employment of the employees in the working places which have 5 or more than full-time workers. The main conclusions of this study are summarized as follows: First, the employment is decided on the three factors which are POP(population), GNP/CPI(Gross National Product divide by Consumer's Price Index), and GNP/INC(Gross National Product divide by Income). Also, the flexibilities for each factor are 0.3, 3.7 & 4.6, and GNP is considered the most flexible factor for the employment. Second, it is estimated that 6,268 thousand persons will be employed in 1995, and it is expected that the employment will grow to 2.9% yearly during 6 year 1990∼1995, while the employment has grown up by 7.1% yearly during the last 14 years between 1976∼1989.

AST의 자동적인 구성

오세만,박진기 東國大學校 1990 論文集 Vol.29 No.-

The task of constructing a complier for a particular source language is complex and large. The complexity of compilation process can be reduced if a compiler is designed modularly. So an intermediate from is needed to interface the phases of the compiler. One type of intermediate form is a tree-structured code which is a suitable form for optimization compilers. An AST is a tree-structured intermediate code which does contain the information necessary to next phase of syntax analysis. Most compliers use AST as an intermediate form because of the efficient representation of the source program. The design and obtaining of AST is important in the compiler design process. In this paper, we have implemented the automatic AST generation system. For this work, we designed GDL which is similar to grammar definition in formal language theory and able to describe the structures of AST. And then we implemented the GDLTS that generates the parser constructing the AST automatically according to the specification of GDL. This system can be used as a tool for constructing AST of source program being complied and also used as AST designing tool.

트리 패턴 매칭 최적화

오세만,김정숙 東國大學校 1995 東國論叢 Vol.34 No.-

It is necessary to optimize target machine independent intermediate code since recent researches on complier development are interested retargetable optimization compiler that can produce the code which can be applied for various target machine. there are various kinds of intermediate languages which are designed for the structures of each compiler. We designed and implemented the intermediate code optimizer that performs the optimization with tree pattern matching techniques by selecting EM intermediate language that is abstract machine code and was used an amsterdam Compiler Kit(ACK). This optimizer system consists of two parts : the tree pattern generator and the tree pattern matcher. The tree pattern generator accepts a table which has 645 optimization patterns and was presented by ACK system. And it generates the tree pattern which is suitable for the tree pattern matcher. The tree pattern matcher produces optimized tree in accordance to constructed tree pattern and performs the actual tree pattern optimization actions. As a result, compare to the most of the traditional string pattern matching methods, it gives about 25% of the code reduction effect for the source code - EM code - and it can reduce re-scan numbers for the basic block. We also found that the optimized code affected to program execution time, and contributed to improve the execution time by about 36%.

HfO₂와 AlO₃를 이용한 터널링 절연막의 전기적 특성

오세만,박군호,정명호,김관수,정종완,조원주 한국진공학회 2008 한국진공학회 학술발표회초록집 Vol.2008 No.8

컴파일러 중간언어에 관한 연구

오세만,이양선,박진기 동국대학교 1986 論文集 Vol.25 No.-

최근의 프로그래밍 언어와 기계구조의 급격한 발전은 컴파일러의 자동생산을 요구하게 되었고, 이에 따라 컴파일러의 설계에도 많은 진보가 이루어졌다. 대부분의 컴파일러에서, 원시코드는 기계코드 보다는 중간코드로 번역이 되며 그 중간코드는 특정기계의 목적코드로 번역된다. Syntax-directed방법으로 원시언어에서 기계언어로 직접 번역도 가능하다. 그러나 우리는 중간언어를 사용함으로 해서 몇가지의 이점을 얻을 수 있다. 첫째로 컴파일러의 구성을 서로 독립적인 두 부분으로 나눌 수 있고, 두 번째로 컴파일러의 portability를 한층 더 높일 수 있다. 그리고 세 번째로 중간언어단계에서 기계와 독립적인 optimization을 할 수 있다. 실제규모의 컴파일러를 설치하는 데 있어 중간언어의 선택은 중요한 문제이다. 이 논문에서는 네가지의 중간언어를 다루었고 각 중간언어의 특징을 중간언어의 기준에 비추어 설명하였다. Recently, the programming languages and machine architectures are proliferating. This has led to automate the production of compilers. So much progress in the design of compilers has been made. In most compilers, the source code is translated into an intermediate code rather than machine code. And then the intermediate code is targetted to a specific machine. It is possible to translate directly from source to machine language in a syntaxdirected way. But we can obtain a munber of advantages by use of an intermediate language. They are: (1) The construction of a compiler can be split into two independent phases. (2) The portability of a compiler can be enhanced. (3) A machine independent optimization can be performed at the intermediate language level. The problem of intermediate language selection is very important in implementing a practical scale compiler. In this paper, four kinds of intermediate language are examined and the characteristics of each intermediate language are described according to some criteria.

O₂ 플라즈마 표면처리에 의한 Bio-FET 소자의 특성 열화 및 후속 열처리에 의한 특성 개선

오세만,정명호,조원주,Oh, Se-Man,Jung, Myung-Ho,Cho, Won-Ju 한국진공학회 2008 Applied Science and Convergence Technology Vol.17 No.3

$O_2$ 플라즈마를 이용한 표면처리 공정이 Bio-FET (biologically sensitive field-effect transistor)에 미치는 영향을 조사하기 위하여, SOI (Silicon-on-Insulator) wafer와 sSOI (strained- Si-on-Insulator) wafer를 이용하여 pseudo-MOSFET을 제작하고 $O_2$ 플라즈마를 이용하여 표면처리를 진행하였다. 제작된 시료들은 back gated metal contact junction 방식으로 측정되었다. $I_D-V_G$ 특성과 field effect mobility 특성의 관찰을 통하여 $O_2$ 플라즈마 표면처리에 따른 각 시료들의 전기적 특성 변화에 대하여 관찰하였다. 그리고 $O_2$ 플라즈마 표면처리 과정에서 플라즈마에 의한 손상을 받은 시료들은 2% 수소희석가스 ($H_2/N_2$)를 이용한 후속 열처리 공정을 진행한 후 전기적 특성이 향상되는 것을 관찰할 수 있었다. 이는 수소희석가스를 이용한 후속 열처리 공정을 통하여 산화막과 Si 사이의 계면 준위와 산화막 내부의 전하 포획 준위를 감소시켰기 때문이다. The effects of surface treatment by $O_2$ plasma on the Bio-FETs were investigated by using the pseudo-MOSFETs on the SOI substrates. After a surface treatment by $O_2$ plasma with different RF powers, the current-voltage and field effect mobility of pseudo-MOSFETs were measured by applying back gate bias. The subthreshold characteristics of pseudo-MOSFETs were significantly degraded with increase of RF power. Additionally, a forming gas anneal process in 2 % diluted $H_2/N_2$ ambient was developed to recover the plasma process induced surface damages. A considerable improvement of the subthreshold characteristics was achieved by the forming gas anneal. Therefore, it is concluded that the pseudo-MOSFETs are a powerful tool for monitoring the surface treatment of Bio-FETs and the forming gas anneal process is effective for improving the electrical characteristics of Bio-FETs.

차세대 비휘발성 메모리에 사용되는 High-k 절연막의 터널링 특성

오세만,정명호,박군호,김관수,정홍배,이영희,조원주,Oh, Se-Man,Jung, Myung-Ho,Park, Gun-Ho,Kim, Kwan-Su,Chung, Hong-Bay,Lee, Young-Hie,Cho, Won-Ju 한국전기전자재료학회 2009 전기전자재료학회논문지 Vol.22 No.6

The metal-insulator-silicon (MIS) capacitors with $SiO_2$ and high-k dielectrics ($HfO_2$, $Al_2O_3$) were fabricated, and the current-voltage characteristics were investigated. Especially, an effective barrier height between metal gate and dielectric was extracted by using Fowler-Nordheim (FN) plot and Direct Tunneling (DT) plot of quantum mechanical(QM) modeling. The calculated barrier heights of thermal $SiO_2$, ALD $SiO_2$, $HfO_2$ and $Al_2O_3$ are 3.35 eV, 0.6 eV, 1.75 eV, and 2.65 eV, respectively. Therefore, the performance of non-volatile memory devices can be improved by using engineered tunnel barrier which is considered effective barrier height of high-k materials.

C++클래스 프로그래밍 지원 도구

오세만,연주흠 東國大學校 1992 東國論叢 Vol.31 No.-

The C++ language is object-oriented programming language which is derived from C language. Although C++ language is based on conventional programming language, it has few drawbacks in use. Particularly, the class programming which enables the reuse of the program is very hard without a supporting tool. When we program the software package using C++ ckasses, we need an information about the relating classes. To accomplish this, we have implemented a system which aids the C++ class programming. The main works of this system are that information about classes in acquired automatically and programmed classes can be added to the class library with very little effort. The system extracts information form classes by parsing the C++ source code and manages class library based on class inheritance hierarchy. And then this information about classes and the class source code are provided when the class library is browsed. So we can do the C++ class programming easily by using the system.

병행 객체를 가진 C++ 언어의 설계 및 구현

오세만,고광만 동국대학교 산업기술연구원 1993 산업기술논문집 Vol.5 No.-

C++ 언어는 객체지향 언어의 특성인 클래스(class), 상속성(inheritance), 다형성(polymorphism)등을 지원하고 있지만 병행화를 지원하지 못하고 있다. 그러나 요사이 많은 실제 응용은 병행처리를 요구하고 있고 더욱이 하드웨어의 발달로 인하여 실질적인 다중 처리기(multiprocessor)가 등장함에 따라 병행화는 중요한 문제가 되었다. 따라서 기존의 많은 언어들에 병행화 구문을 추가하여 병행화를 지원하는 언어 확장 방법이 연구되고 있다. 본 논문에서는 객체지향 프로그래밍 언어인 C++ 언어에서 병행화를 지원하기 위해 C++ 언어의 구문에 객체의 멤버 함수가 병행 수행 가능하도록 병행화 구분을 추가하였으며 병행 C++ 프로그램을 C 프로그램으로 번역하는 번역기(translator)를 구현하였다. 번역기는 C++ 프로그램을 C 프로그램으로 바꾸는 기존의 번역기를 수정하여 구현하였다. C++ 언어는 객체지향 특성을 갖고 있기 때문에 그 특성을 유지하면서 병행화를 추구하는 일은 아주 제한적일 수 밖에 없다. 따라서 본 논문에서도 아주 제한된 병행화 구문을 추가하였으며 그 의미를 실제로 구현하였다. To support the concurrency in the object-oriented programming language, it has been studied language extension methods which combine object-oriented programming facilities with concurrent paradigms. Although the C++ programming language has object-oriented language properties such as class, inheritance, polymorphism but it does not provide concurrent programming facilities. In this work, we add the restricted language features which enable the concurrent programming in the C++ language. We also implement a translator which translates concurrent C++ programs into C programs using UNIX system call functions.