Haksoo Jeon & Daewoong Kang. 2000. Optimality Theoretic Analysis of English Word Stress. Studies in Modern Grammar 19, 139-170. This paper approaches English word stress within the framework of Optimality Theory. We have seen that there are constraints that interact to produce correct word stress pattern. Foot structure constraints, Ft-Bin, Ft-Form, and WSP, are undominated. Therefore the trochaic footing and quantity requirement are strictly obeyed in English foot building. Non-Head(e) guarantees that underlying schwa accounts for various apparent exceptions. This paper identifies four different such subcategorization constraints : Align-to-δ, Align-in-δ, Align-to-Ft, and Align-to-PrWd. What is really interesting in this approaches that one suffix may have more than one constraint, thereby restricting its appearance in actual words. One step further, this paper shows that the present approach can also explain the so-called cyclicity effect of the stress assignment. Previous cyclical stress theory fails in explaining the difference between the derived and underived word. Therefore, this paper provides new solutions to the old problem of accounting for the difference between the derived and underived words regarding the stress assignment and wellformed word formation.

Choe, Hyon Sook. 2000. Focus-sensitive Question and Copy Theory. Studies in Modern Grammar 19, 27-48. In this paper, adopting a version of Chomsky`s (1971) conception of focus/presupposition (cf. also Dryer 1996), I suggest that yes-no question and wh-question refer to the information of focus and that the extraction of yes-no and wh-question operators (that are lexically inserted on a focus) is involved in yes-no and wh-questions. I also suggest that the concept of focus is both LF- and PF-related and that extraction in yes-no question and wh-question refers to PF-related focus information while yes-no and wh-question operators are lexically inserted on an LF-related focus (a focus category, here) so that only focus categories (which are not presupposed) can be questioned. Based on the above suggestion, I reinterpret the copy theory introduced in Chomsky (1993) by suggesting a notion of selective deletion under an hypothesis that the information on LF- and PF-related focus is syntactically available in terms of formal feature. The hypothesis makes it possible to suggest a copy theory that employs selective deletion but not QR, which is conceptually and theoretically better than a copy theory discussed in Chomsky (1993) and assumed in Chomsky (1995, 1998, 1999).

본 논문은 이상호와 이길성(1995)에 의해서 제안된 LRCS(Linear Reservoir and Channel System) 강우-유출 모형의 기본 이론을 소개하였고, 모형의 민감도 분석 및 보정과정에서 나타나는 목적함수에 따른 모형 출력의 변화를 파악하고자 하였다. 보정시 매개변수 영향성 분석을 위한 "hat" 행렬과 영향성 척도의 사용을 제안하였고, 매개변수 추정시 오차 전파에 따른 모형 출력의 변화 정도 및 모형 예측치 분산과 매개변수 변화에

A sea/land breeze circulation system and a regional scale circulation system are formed at a region which has complex terrain around coastal area and affect to the dispersion and advection of air pollutants. Therefore, it is important that atmospheric circulation model should be well designed for the simulation of regional dispersion of air pollutants. For this, Local Circulation Model, LCM which has an ability of high resolution is used. To verify the propriety of a LCM, we compared the simulation result of LCM with an exact solution of a linear theory over a simple topography. Since they presented almost the same value and pattern of a vertical velocity at the level of 1 ㎞, we had a reliance of a LCM. For the prediction of dispersion and advection of air pollutants, the wind field should be calculated with high accuracy. A numerical simulation using LCM will provide more accurate results over a complex terrain around coastal area.

Kim Myung-Bae. 1999. An Optimality Theoretic Approach to Clitic Sequences in Italian. Studies in Modern Grammatical Theories 16, 161-180. Clitic Sequences in the Romance languages have been the subject of much work in generative linguistics with respect to their morphosyntactic properties and their phonological properties. The purpose of this paper is to examine the clitic sequences in Italian in the framework of Optimality Theory. I will examine how clitics combine and which clitics are chosen when their combination is prohibited. I will show that the conditions on the combination of clitics are best formulated as morphological constraints on the clitic sequences within an Optimality Theoretical Account. Thus, with the morphological constraint ranking I will explain both the order of clitics and the combinatory conditions on clitic sequences in Italian. I will show where the opaque clitics originate from in Italian. Then I will demonstrate how the phonological constraint ranking can explain the opaque clitics in Italian. Finally, I will suggest a tentative ranking for these types of constraints to select the optimal clitic sequence in just one evaluation process.

Hakyeon Kim. 1999. An Optimality Analysis of Null Arguments. Studies in Modern Grammar 16, 121-138. The aim of this paper is to survey the distribution of null subjects and null objects found in Korean and to show that the previous approaches to explain their licensing have not been so successful. We will also show that the licensing of the null arguments are better explained through the methodology of Optimality theory. In accordance with the optimality theory, the constraint ranking such as DropTopic = Parse or DropTopic ＞＞ Parse can solve the problems remained in control theory and Huang`s generalized control rule because by changing the constraint ranking even the pro-drop parameters can be explained better. Particularly the asymmetry found in the licensing of null subjects and null objects can be solved with a couple of constraints. However, there remain some detailed problems in the licensing related with pragmatic context and some idiosyncratic features of individual word. And further research for the interpretation of null arguments in Optimality methodology is expected.

A trailer truck is a major equipment for transporting containers, and its driving is difficult due to two degrees of freedom which exist in the joint part between truck and trailer. Especially Backing a trailer truck to a parking home is a difficult exercise for all but the most skilled truck drivers. Normal driving instincts lead to erroneous movements. When watching a truck driver backing toward a parking home, one often observes the driver backing, going forward, backing again, going forward, etc., and finally backing to the desired position along the parking home. This paper discusses the design of the controller to control the steering of a trailer truck while only backing up to a parking home from an initial position. In this paper, we propose a backing up control system for a container trailer truck using fuzzy theory where the primitive fuzzy control rules are macroscopically designed using an expert's knowledge, and the control rules are regulated by LIBL(Linguistic Instruction Based Learning) to enable to back up successfully the trailer tuck to a parking home from arbitrary initial position. The validity of the proposed parking control system is shown by applying it to some initial positions on the simulator for container trailer truck.

운동파 이론의 수치해석에는 유한차분법과 특성곡선법이 주로 사용된다. 유한차분법의 경우 지배방정식의 차분과정에서 발생하는 절단오차에 의하여 첨두유량의 감쇠가 발생한다. 특성곡선법의 경우 첨두유량은 양호하게 보존되지만, 수치해석 과정에서 발생하는 충격파를 적절하게 고려하지 못한다. 본 연구에서는 운동파 이론에 근거한 각각의 수차해석 기법의 특성을 살펴보았으며, 특성곡선법으로 수치해석할 때 발생하는 충격파의 수치처리기법인 Propagating Shock Fi

본 연구는 미국의 실용주의 철학자인 존 듀이의 공생적 합리주의 모형에 대한 분석과 이 모형의 계획이론의 적용에 대한 사회규범적 논의에 관한 것이다. 다양한 사회과학분야의 문헌고찰과 듀이를 비롯한 실용주의학파들의 연구를 중심으로 이루어진 본 연구는, 최근 논의되고 있는 사회 규범적 차원에서 논의되고 있는 계획이론의 이론적 근거를 존 듀이의 공생적 합리주의에서 찾고자 하였다. 민주주의의 속성상 계획과정에서의 상충과 갈등이 피할 수 없는 현실이라면, 이러한 갈등과 상충이 발전적 도구로 존재할 수 있다고 제시한 듀이의 공생주의는 합리성의 가능성에 바탕을 둔 고전적 합리주의 이론을 대체할 수 있는 하나의 이론으로 제시될 수 있을 것이다. 존 듀이의 공생주의 이론에 대한 연구는 기존의 계획이론분야에서는 제시된 적이 없는 최초의 연구로서, 향후 계획이론 분야의 발전에 있어서 이론적 분석의 한 축을 제시했다는데 본 논문의 기여가 있다고 하겠다.

Lim, Sang-bong. 1998. Acquisition of Subject-auxiliary Inversion in Child English and Optimality Theory. Studies in Modern Grammar 14, 349-364. The purpose of this paper is to examine whether the patterns of subject-auxiliary inversion in child English questions can be explained by the constraints in Grimshaw`s(1992) Optimality Theory account of inversion patterns in adult English questions. I briefly review the treatment of subject-auxiliary inversion within the Minimalist Theory. The theory claims that subject-auxiliary inversion is a subcase of head movement that moves an auxiliary across the sentence to the head of the presentential complementizer(CP) position in nonselected CPs. In this paper I try to show that the stages of acquisition in subject-auxiliary inversion and the patterns of inversion in child English. And I also show that an Optimality-Theoretic approach can explain several facts regarding the pattern of auxiliary inversion in child English. In addition, this paper argues that the constraints ranking of child English must be different from those of adult English to capture the characteristics of subject-auxiliary inversion in child English.

Kim, Jae-gue. 1998. A Minimalist Theoretic Analysis of Word Order Parameter. Studies in Modern Grammar 14, 151-173. The purpose of this study is to examine the correlation of head movement and word order under the postulation that the order of the sentential constituents is closely related to the head parameter and head movement. In this paper, it is shown that Chomsky`s(1993, 1995) Economy Principle not only covers the effects of the ECP, Ouhalla`s(1990b) Neg Parameter, Pollock`s(1989) theta-opacity, Pesetsky`s(1989) Earliness Principle, but also effectively account for the properties of head movement and word order in English, French, German, and Korean. Following Chomsky (1993), the motivation of head movement is regarded as morphological feature-checking and differences of word order are analyzed in terms of the properties of functional categories. In the framework of Minimalist Theory, the morphological features of functional categories in English, French, German, and Korean, including many other languages are classified into strong vs. weak, and the surface word order of them is explained on the base of the properties of these features.

본연구에서는 Einstein과 Chien(1954)의 이론은 토대로 하여 하천의 모형연구에 적합한 이동상 모형이론을 수립하였다. 흐름의 상사 ()와 유사이동의 상사 ()의 변화에 따른 총 하상변동량의 거동을 비교함으로써 적용성을 검토하였다. 그 결과 의 값 또는 의 값이 작을 수록 총 사항변동량은 크게 발생하는 것으로 나타났다. 본 연구에서 수립된 모형이론은 각 모형이론의 제한조건을 완화한 것으로서 실험장소 또는 모형사의 제한으로 모형이론을 이상적으로

격자기반의 물수지 기법을 이용하여 강우에 의한 지표흐름과 지표하흐름의 시간적 변화와 공간적 분포를 모의할 수 있는 분포형 강우-유출모형을 개발하였다. 본 모형은 제 수문인자들의 격자별 물수지를 계산하여 단방향 흐름경로 알고리듬에 의하여 지표 및 지표하 흐름을 추적한다. 전처리과정으로서 GRASS를 이용하여 모형에 필요한 ASCII 형태의 자료들을 준비하고, 후처리과정으로서 모형의 수행결과인 유역의 유출량, 유출고, 토양수분, 본포 등을 GRASS상에서

In the field of research of seakeeping quality, much development has been made incent years using the method of calculation based on the strip theory. It is indispensable to grasp quantitatively the seaworthiness of a ship in order to draw correct design at initial stage and to perform proper operations at sea services. In this paper, the responses of three fishing vessels are calculated using statistical and spectral analyzing method to get the characteristics of the motion response. From the theoretical result we know that the significant values of the pitching and rolling motion can be signiicantly affected by not only the ship's tonnage but also the mean wave period in spite of the similar sea environment. So we can apply these expected results to the safe maneuvering and fishing operations in rough weather conditions by combining environmental circumstance with the stability condition of vessels.