• Title/Summary/Keyword: Rearrangement

Search Result 816, Processing Time 0.028 seconds

Influence of Adoption of Information Technology on the Change of Organization Structure (기업의 조직구조에 미치는 정보기술 도입의 영향)

  • 김성언;이승아
    • The Journal of Information Systems
    • /
    • v.6 no.1
    • /
    • pp.47-62
    • /
    • 1997
  • Adoption of information technology(IT) in a corporation has been started with the aim of efficient process and management of business being complicated. But, this adoption of IT is roleplaying the rearrangement of organization structure. Many researchers have studied the relationship between adoption of IT and change of organization structure. In this research, it has been studied that how the adoption of IT influences on the change of organization structure. Adoption of IT ina corporation influences the structure of manpower and this influence causes the change of structure of organization. However, this influence is not only the deterministic source to the change. In a corporation, not only intention and role of chief executive and but also participations of employees for the adoption of IT make differences in the quality of corporation information systems and, as a result, the aspect of organization structure change.

  • PDF

The Study of Molecular Structures for New Banana-shaped Liquid Crystals

  • Choi, S.;Huang, Y.M.;Jakli, A.;Lim, T.K.;Lee, C.K.;Shin, S.T.
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 2003.07a
    • /
    • pp.595-599
    • /
    • 2003
  • We have studied the phase transition to look for molecular structure by using several different techniques for new banana-shaped liquid crystals shown in Fig. 1. Based on the similarities to recently observed fluro-contaning materials (switching involves layer structure rearrangement, increasing threshold with increasing temperature) for HC sample (where x is H), we assume that the phase C has a triclinic symmetry corresponding to the double tilted $smC_G$ Phase. The observation that the polarization peak appears at lower field ($E_o{\sim}15V/{\mu}m$) than the amplitude of the threshold ($E_{th}$) can be explained assuming a field induced $SmC_G$ - SmCP (or SmAP) transition at $E_{th}$

  • PDF

Simple synthesis of Biphosphonates with Excellent Flameproofing Properties

  • Cao, Yang;Zhang, Weiwei;Yang, Xufeng;Yang, Jinfei;Zhi, Huizhen
    • Korean Chemical Engineering Research
    • /
    • v.52 no.2
    • /
    • pp.187-190
    • /
    • 2014
  • Four excellent halogen-free biphosphonate flame retardants (EBDMP, EBDEP, MBDMP, MBDEP) were synthesized through polycondensation and Arbuzov rearrangement reactions without using any solvents. The products were characterized by ESI-MS, FT-IR and $^1H$ NMR. The application of EBDEP in polyurethane soft foam was studied and the results illustrated its excellent flame-proofing properties.

Teaching & Learning Activities and Spatial Arrangement in Open Education (열린교육의 내용과 시설 공간 구성)

  • Park, Young-Sook
    • Journal of the Korean Institute of Educational Facilities
    • /
    • v.5 no.3
    • /
    • pp.11-16
    • /
    • 1998
  • The size and location of spaces need to be changed for teaching & learning activities in open education. This study is aimed to investigate how school facilities should be rearranged when the open education is implemented in elementary school. Some considerations such as enlargement of classroom, establishment of open space, and provision of various self-learning spaces are proposed for the rearrangement. It is also recommended that (1) a space for research and conference for teachers, (2) a multi-learning space to be utilized by connecting general and special classrooms, and (3) an open space for exclusive use of one grade or two grades be established.

  • PDF

A Study on Special Education Facilities of the Elementary School in Seattle (미국 워싱턴주 시애틀시의 초등학교 특수교육시설에 관한 연구)

  • Kim, Jong-Young
    • Journal of the Korean Institute of Educational Facilities
    • /
    • v.17 no.3
    • /
    • pp.13-20
    • /
    • 2010
  • Seattle Public School Authority implements Inclusive Education which allows handicapped children to study in ordinary schools. This research is to analyze Inclusive Education system and find characteristics of school network and school planning. Survey was performed on 9 school districts and 54 public schools. The found results are following; 1) 54 schools adopt special education programs and legal barrier free design. All handicapped children groups are divided into level I through Ⅳ including mild level (level I,II) at all schools and multi-handicapped(severe level, level III, IV) at schools specified by school district or Seattle City. 2) Each school groups are transformed into self-contained classroom, therapy room and general room as a set in consideration of user communication and special education program. Also, existing classrooms are rearranged into small study spaces by using partition system. It allows ordinary schools to accomodate Inclusive Education through school network, classroom rearrangement and space partitioning.

Loose and Dense Aggregate Particle Packing Models in Cement and Concrete

  • Kim, Jong-Cheol;Lim, Chang-Sung;Auh, Keun-Ho
    • The Korean Journal of Ceramics
    • /
    • v.6 no.1
    • /
    • pp.1-5
    • /
    • 2000
  • Particle packing properties are important to develop high technology products in the field of cement and concrete. Two types of particle packing models for aggregates with sand and cement were introduced: the loose and the dense aggregate packing. Aggregate packing models with randomly generated sand and cement particles in the interstices of aggregates fit the Furnas model very well. Different aggregate models show different packing properties with the experimental results. Main reason for the difference with the experimental results is due to sand rearrangement in the loose aggregate packing model and to aggregate relaxation in the dense aggregate packing model. In the experimental situation, aggregates seem to be more disordered and have a relaxed packing structure in the dense packing, and sands seem to have a more rearranged packing structure in the loose packing model.

  • PDF

Habitat Use of Cranes in Cheolwon Basin, Korea

  • Lee, Won-Shin;Rhim, Shin-Jae;Park, Chan-Ryul
    • The Korean Journal of Ecology
    • /
    • v.24 no.2
    • /
    • pp.77-80
    • /
    • 2001
  • We investigated the habitat use of cranes, and suggested the proper way to protect and manage the cranes in Cheolwon Basin, which is the most important wintering ground of cranes in Korea. Field surveys were conducted in the wintering seasons from Nov. 1994 to Feb. 1995, and from Nov. 1997 to Feb. 1998. The habitat loss and environmental changes by the road construction and agricultural field rearrangement might have affected the distribution of the cranes. The distribution of cranes seemed to be related with the density of rice grains remained in rice paddies.

  • PDF

WARP: Memory Subsystem Effective for Wrapping Bursts of a Cache

  • Jang, Wooyoung
    • ETRI Journal
    • /
    • v.39 no.3
    • /
    • pp.428-436
    • /
    • 2017
  • State-of-the-art processors require increasingly complicated memory services for high performance and low power consumption. In particular, they request transfers within a burst in a wrap-around order to minimize the miss penalty of a cache. However, synchronous dynamic random access memories (SDRAMs) do not always generate transfers in the wrap-round order required by the processors. Thus, a memory subsystem rearranges the SDRAM transfers in the wrap-around order, but the rearrangement process may increase memory latency and waste the bandwidth of on-chip interconnects. In this paper, we present a memory subsystem that is effective for the wrapping bursts of a cache. The proposed memory subsystem makes SDRAMs generate transfers in an intermediate order, where the transfers are rearranged in the wrap-around order with minimal penalties. Then, the transfers are delivered with priority, depending on the program locality in space. Experimental results showed that the proposed memory subsystem minimizes the memory performance loss resulting from wrapping bursts and, thus, improves program execution time.

Synthesis and in vitro Cytotoxicity Monoterpenoid as New Antitumor Agents (Monoterpenoid계의 새로운 항암제 합성 및 In vitro 세포독성 평가)

  • 이민정;김대근;백형근;이강노;정규혁
    • Biomolecules & Therapeutics
    • /
    • v.9 no.3
    • /
    • pp.143-155
    • /
    • 2001
  • Many attention has been focused on developing new chemotherapeutic agents for a treatment of cancer from natural products. From Carpesium divaricatum S. et Z. (Compositae), various monoterpenoid compounds were isolated and exhibited mild antitumor activity against human tumor cell lines. These facts prompted us to explore the structure-activity relationship of these compounds. The synthesis of monoterpenoid compound was accomplished by Fries rearrangement, Grignard reaction, elimination, allylic oxidation, esterification and epoxidation as key steps. The results of in vitro cytotoxicity (A549, SK-OV-3, SK-MEL-2, XF498, HCT15) of the synthesised compounds are as follows: First of all, epoxide moiety is prerequisite for cytotoxic activity in diester compound. Any kind of compounds with olefin or diol moiety instead of epoxide ring exhibited poor or mild cytotoxic activity respectively. Of o-acetoxy and isobutoxy epoxy esters, p-sub-stituted phenylacetate compounds exhibited high cytotoxic activities against SK-MEL-2 and HCT15.

  • PDF

Reconstructible design knowledge expression using Design DNA method (Design DNA 방법을 이용한 재구성 가능한 설계 지식의 표현)

  • 고희병;하성도;김태수;이수홍
    • Proceedings of the Korean Society of Precision Engineering Conference
    • /
    • 2003.06a
    • /
    • pp.1-4
    • /
    • 2003
  • Knowledge classification and expression of constructed knowledge have been main research issues in the field of knowledge representation. Constructed design knowledge of the former product loses its utility when new products with different structures are introduced to the market. In order to construct the design knowledge for a new product. designers need to reconstruct the design knowledge with new relationships. The design knowledge has been constructed with level trees, but it is difficult to rearrange the relations. Design DNA is proposed in this work in order to facilitate the rearrangement of design knowledge and give flexibility to knowledge structure. Design DNA is based on Layout-oriented domain knowledge and Function-oriented domain knowledge, which enables to generate new design knowledge that will result in new part geometries for given constraints on the part functions. Design DNA is applied to the design knowledge of lever system of the automatic transmission of passenger cars as an example.

  • PDF