The Nonlinear Equivalent Input Disturbance Coordinated Control for Enhancing the Stability of Hydraulic Generator System

Lan‑Mei Cong,Xiao‑Cong Li 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.2

Hydraulic generator plays more important roles as a renewable clean energy in improving stability. As hydraulic generator enjoys strong nonlinear properties, traditional linearized control method may holds worse adaptability for vary disturbances. In order to solve the problem, a Nonlinear Equivalent Input Disturbance Coordinated Control (NEIDCC) method is proposed in this paper. The objective functions related to system control performance are frstly determined. Then the multi-objective equations satisfying the Brunovsky normal form are derived, by which the nonlinear control problem is transformed to linear space to be solved. The nonlinear equivalent control law is obtained from the linear law by calculating the Γ derivative of the objective functions. When the system is subjected to diferent disturbances, the designed NEIDCC control law supports dynamic damping by observing the disturbance to stabilize the oscillations. As a result, the control system holds good performance. The simulation results of the designed hydraulic turbine generator control system demonstrate the efectiveness of the NEIDCC method.

A Note on Aspectual Properties of Korean Idioms

Lan Kim 한국생성문법학회 2018 생성문법연구 Vol.28 No.3

Kim, Lan. 2018. A Note on Aspectual Properties of Korean Idioms. Studies in Generative Grammar, 28-3, 433-447. This paper investigates aspectual properties of idiomatic expressions in Korean, the data that have not received much attention in the study of Korean idioms. Extending McGinnis’ (2002, 2005) observation concerning English, I examine aspectual behaviors of phrasal idioms in Korean and show that the meaning of phrasal idioms in Korean follows from the composition of their parts. If the current work is on the right track, it may offer support to the argument that has been made in generative grammar in which idioms are not just random units but may act as systematic and compositional phrases.

Talking about Kunqu Opera

An Lan 한국콘텐츠학회 2021 ICCC International Digital Design Invitation Exhib Vol.2021 No.12

Talking about Kunqu Opera

An Lan 한국콘텐츠학회 2021 한국콘텐츠학회 ICCC 논문집 Vol.2021 No.12

标准成本法与作业成本法融合的研究

徐香?(Xu, Xiang-Lan),金春洙(Kim, Chun-Soo) 한국국제회계학회 2017 국제회계연구 Vol.0 No.75

With the rapid development of science and technology and the popularization of information technology, the production environment and manufacturing processes have changed significantly, enterprises increasingly rely on machines and computer control program. The proportion of direct labor costs in the product cost structure has sharply declined, while the proportion of manufacturing cost has increased substantially. With the change of product cost structure, the focus of cost control is gradually shifted from direct material cost and direct labor cost to the manufacturing cost. In order to adapt to the new manufacturing environment, establishing a scientific cost management system has become an inevitable trend. Although the standard cost method provides a cost basis for cost control and performance evaluation, it is not easy to find out the specific link of the cost variance due to too single manufacturing cost distribution standard. Therefore, it is necessary to introduce the basic idea of activity-based costing in the process of setting product standard cost. Based on the activity, the manufacturing cost of the product is allocated by different allocation ratio to ensure the accuracy of product cost accounting. This paper which is based on the standard cost method and activity-based cost method discusses the necessity for the integration of both, and describes its application in Boiler Manufacturing X Co. Ltd. to seek a new cost management model to adapt to the manufacturing environment of modern enterprises. Through the integration of standard cost method and activitybased costing method, the enterprise management goal and the specific production operation are combined to achieve the effective control of product cost.

Verb Copying and Situation Delimiters in Chinese

박혜선,Zhang Lan 대한언어학회 2006 언어학 Vol.14 No.2

Park, Hyeson & Zhang, Lan. 2006. Verb Copying and Situation Delimiters in Chinese. The Linguistic Association of Korea Journal, 14(2), 115-131. Chinese has the verb copying construction, in which a verb is copied after a non-referential/non-specific object in the presence of adverbial elements such as duration and frequency phrases, or the complex stative construction. Several analyses have been proposed for this construction from both formal and functional perspectives. Among the formalists, Yi (1990) proposes that verb copying occurs to assign case to the adverbial, which is an NP in Chinese. In this paper, incorporating Yi's case approach and Wechsler and Lee's (1996) theory on 'situation delimiters', and in comparison with Korean accusative marked adverbials, we propose a new analysis of the verb copying construction. Wechsler and Lee (1996) propose that accusative marked adverbials in Korean are situation delimiters and they get accusative case due to the universal principle, Case Domain Generalization (CDG), which states that the domain of direct case for a predicate may be extended to include a situation delimiter. Contrary to Wechsler & Lee, however, we propose that CDG is not a universal principle; rather, it is parameterized depending on whether multiple accusative case checking is allowed or not in a language. Since Chinese does not allow multiple case checking, verb copying is utilized to license the situation delimiters.

국내 웹검색도구의 특성 및 탐색 기능 평가에 관한 연구

이란주,최경화 한국문헌정보학회 1997 한국문헌정보학회지 Vol.31 No.1

최근에 국내외의 웹문서들을 대상으로 한글의 특징적인 면을 고려해서 편리하게 이용할 수 있는 국내 검색도구들이 개발되고 있다. 본 연구의 목적은 이러한 국내 검색도구들의 종류를 살핀 뒤, 이들의 특성을 파악해 이용자 입장에서 정보요구에 적합한 검색도구를 선택하도록 돕는데 있다. 검색도구를 크게 목록서비스(코시크, DIR, ZIP, 넷퀘스트21, 심마니)와 검색엔진(심마니, 까치네, 정보탐정, 애니서치, 유니파인더, 웹글라이더, 미스다찾니)으로 나누고 이들의 현황, 검색옵션과 장단점 및 성격등을 비교·평가함으로써 정보요구에 따른 검색도구 선택에 대한 방법론을 제공한다. 또한 국내 검색도구의 문제점을 지적함으로써 보다 향상된 검색도구의 설계에 도움이 되고자 한다 The purpose of the article is to help users to select appropriate Korean WWW search tools and to retrieve Web documents for their information needs by using them effectively. It analyzes the characteristics, functions, and advantages and disadvantages of each search tool, while search tools are divided broadly by two categories - subject directory services (Kor-seek, DIR, ZIP, Netquest21, Simmany) and keyword search engines (Simmany, Kachine, Jungbotamjung, Anysearch, Unifinder, Webglider, Missdachanni). It provides the selection criteria of search tools for users who have information needs. In addition, the study also attempts to contribute to the improvements in designing Korean WWW search tools, as investigating their shortcomings

감자의 수침조건에 따른 전분의 이화학적 특성

정난희,김경애 全南大學校家政科學硏究所 1999 生活科學硏究 Vol.9 No.-

Physicochemical properties of potato starches which were prepared by steeping at 10 ±1℃ and 25 ±1℃ for 11days were investigated. The pH of steeped water were increased during steeping. Shapes of all starch granules were round and polygonal, but size was decreased and some part of starch granule had porous surface by steeping. X-ray diffraction pattern was all B-type. Relative crystallinity was increased until 9 days at 10, 7 days at 25℃ of steeping and decreased thereafter. Protein, lipid and phosphorus in starch were decreased, but ash was increased by increasing steeping time. Amylose content and density were decreased, but water binding capacity was increased by steeping. Swelling power and solubility were decreased with increasing steeping. The intrinsic viscosity of potato starch was decreased by steeping.

國民精神敎育의 性格과 敎授方法的 考察

申蘭植 順天大學校 1984 論文集 人文社會科學篇 Vol.3 No.-

The concept and the propriety of education for national ethics as a course of study limited to the school education are concerned, and the problems on the characteristic and the teaching method of it are discoursed upon in this thesis. The Kernel of the thesis is the discourse on these question; for what education for national spirit has to be taught as a subject in schools, and how national ethics has to be internalized in the activity of classroom insturction, and what the method of teaching according with the characteristic of education for national ethics is. In conclusion, the followings are the summary of the teaching method which fish in with the characteristic of education for national ethiscs. 1) The method of teaching is to make students cultivate the ability to criticize and justify and defend the right ous crierion selected among the criteria casing complications to students, while paying regard to student' capacity of retional judgment and making the most of it. 2) Laying stress on the student's discussion, the methold of teaching is to make students extend selfregulation of the students. 3) The method of teaching is to reach agreement and deduce conclusion according to the principle of unrestraint. 4) The method of teaching is to maek the system of conviction with a will of practice.

천안 배 원예농협 공동계산제 활성화 방안

조란화,김철호 충남대학교 농업과학연구소 2002 농업과학연구 Vol.29 No.2

Pooling system of jointly shipping farm products aims to realize economies of scale for it's farm products and strengthen bargaining power for the farmers. As adapting to pooling system, price received by farmers and competitive power of our farm products can be enhanced. Pooling system especially in Cheon-an pear and horticultural primary cooperatives is found be required, because the pooling system is not introduced yet although the area is main region for domestic pear production. This study aims at establishing the appropriate pooling system and it's strengthening strategies in this cooperative through survey of local producers' group in this cooperatives and case studies of successful pear primary cooperatives.