• Title/Summary/Keyword: Fundamental theory

Search Result 907, Processing Time 0.025 seconds

A Study on Experiences of Students to be cared in the Teaching-Learning Process of Nursing Education (간호교육의 학습과정에서 학생이 받은 돌봄 경험에 관한 연구)

  • Lee, Hye-Kyoung;Jung, Kyoung-Nim;Chi, Sung-Ai
    • The Journal of Korean Academic Society of Nursing Education
    • /
    • v.7 no.2
    • /
    • pp.349-359
    • /
    • 2001
  • The purpose of this study was to find the experiences to be cared of nursing students in the teaching-learning process of nursing education and provided the fundamental data of nursing education. For this study, the analytical theory of Benner's Interpretive Phenomenology was applied and the research question was 'How do the nursing students to be cared in the teaching-learning process of nursing education?' All 64 junior and senior nursing students who volunteered for this study were interviewed. The data was collected by open-ended audiotaped interview or written descriptions of situations they had experienced with a caring faculty member. All the contents of interview were recorded while interviewing with the each participants from the April 1998 to September 2000. The conclusions, obtained from the study on experiences to be cared of nursing students, were as follows ; 1. The nursing students considered the relationship with professor as very important matter. 2. The significant and important themes to nursing student be cared in the teaching-learning process of nursing education were Concern, Support, Information and Acceptance. 3. The result of this study explained the content and stage of nursing education applying 4 themes, therefore its practical use as material of nursing education was considered. Based on this study, the practical use of this results as nursing education data and the experimental study for measuring the effect of caring in the teaching-learning process of nursing education were suggested.

  • PDF

The Convergence of Accuracy Ratio in Finite Element Method (유한요소법의 정도수렴)

  • Cho, Soon-Bo
    • Journal of Korean Association for Spatial Structures
    • /
    • v.3 no.2 s.8
    • /
    • pp.85-90
    • /
    • 2003
  • If we use a third order approximation for the displacement function of beam element in finite element methods, finite element solutions of beams yield nodal displacement values matching to beam theory results to have no connection with the number increasing of elements of beams. It is assumed that, as the member displacement value at beam nodes are correct, the calculation procedure of beam element stiffness matrix have no numerical errors. A the member forces are calculated by the equations of $\frac{-M}{EI}=\frac{{d^2}{\omega}}{dx^2}\;and\;\frac{dM}{dx}=V$, the member forces at nodes of beams have errors in a moment and a shear magnitudes in the case of smaller number of element. The nodal displacement value of plate subject to the lateral load converge to the exact values according to the increase of the number of the element. So it is assumed that the procedures of plate element stiffness matrix calculations has a error in the fundamental assumptions. The beam methods for the high accuracy ratio solution Is also applied to the plate analysis. The method of reducing a error ratio of member forces and element stiffness matrix in the finite element methods is studied. Results of study were as follows. 1. The matrixes of EI[B] and [K] in the equations of M(x)=EI[B]{q} and M(x) = [K]{q}+{Q} of beams are same. 2. The equations of $\frac{-M}{EI}=\frac{{d^2}{\omega}}{dx^2}\;and\;\frac{dM}{dx}=V$ for the member forces have a error ratio in a finite element method of uniformly loaded structures, so equilibrium node loads {Q} must be substituted in the equation of member forces as the numerical examples of this paper revealed.

  • PDF

Synergy and contingency fit analysis for digital convergence value attributes (디지털융합 가치요소의 시너지와 상황 적합 분석)

  • Han, Hyun-Soo;Moon, Tae-Eun
    • Journal of Digital Convergence
    • /
    • v.10 no.11
    • /
    • pp.403-418
    • /
    • 2012
  • In this paper, we attempted to theorize the synergy effect between the value creating attributes for digital convergence model in the service industry. Our investigation is based upon contingency fit theory to understand the strategic fit for the two inherent value attributes of fixed and mobile value, as well as resolving fundamental limitations of service processes. Empirical validation of the derived research model is analyzed using hierarchical regression method. The results indicate that the relative advantage of each value creating attributes are strongly associated with the characteristics of domain service industries, and compatibility is critical to user adoption of convergent service model. Moreover, the less significant statistical impact of the synergy between mobile and fixed value attributes and others implies that each value attribute uniquely contributes to particular IT convergence model, which thereby offers critical insight that focusing the convergent value in conjunction with specific application domain is the most appealing managerial focus. The findings provide useful insight for the further research in IT based industry convergent business model areas.

Trend of Research on the Korean Geography in China (중국의 한국지리 연구동향)

  • Jin, Shizhu
    • Journal of the Korean association of regional geographers
    • /
    • v.10 no.4
    • /
    • pp.824-832
    • /
    • 2004
  • By reviewing the research papers and books about Korean geography published in China during the recent 20 years, the trend of research on the Korean geography in the filed of general and professional viewpoint was summarized in this paper. For general review, 4 major trends were observed. First, lots of research institutes have been newly established. Second, the amount of journals and books related to the Korean geography are keeping increasing. Third, a series of new academic results arc being achieved. Forth, academic exchange activities are being carried out actively in broader rangers. For professional geography study, researchers are more focused on the study of human geography rather than physical geography. And in the field of physical geography, studies about geology, earthquake and natural resource appeared livelier than others, while in human geography, studies about economic geography attract more interests. It was also observed that problems such as the research fields are limited and Jack of fundamental theory study exist. To solve these problems, the learned circles of Chinese geography should do more efforts, while an effort of introduction of achievements of Korean geography study to china by learned circles of Koran geography are also necessary.

  • PDF

COMPARISON AMONG SEVERAL ADJACENCY PROPERTIES FOR A DIGITAL PRODUCT

  • Han, Sang-Eon
    • Honam Mathematical Journal
    • /
    • v.37 no.1
    • /
    • pp.135-147
    • /
    • 2015
  • Owing to the notion of a normal adjacency for a digital product in [8], the study of product properties of digital topological properties has been substantially done. To explain a normal adjacency of a digital product more efficiently, the recent paper [22] proposed an S-compatible adjacency of a digital product. Using an S-compatible adjacency of a digital product, we also study product properties of digital topological properties, which improves the presentations of a normal adjacency of a digital product in [8]. Besides, the paper [16] studied the product property of two digital covering maps in terms of the $L_S$- and the $L_C$-property of a digital product which plays an important role in studying digital covering and digital homotopy theory. Further, by using HS- and HC-properties of digital products, the paper [18] studied multiplicative properties of a digital fundamental group. The present paper compares among several kinds of adjacency relations for digital products and proposes their own merits and further, deals with the problem: consider a Cartesian product of two simple closed $k_i$-curves with $l_i$ elements in $Z^{n_i}$, $i{\in}\{1,2\}$ denoted by $SC^{n_1,l_1}_{k_1}{\times}SC^{n_2,l_2}_{k_2}$. Since a normal adjacency for this product and the $L_C$-property are different from each other, the present paper address the problem: for the digital product does it have both a normal k-adjacency of $Z^{n_1+n_2}$ and another adjacency satisfying the $L_C$-property? This research plays an important role in studying product properties of digital topological properties.

The Proportion of Game Character and Game Image (게임캐릭터의 등신비율과 게임이미지)

  • Choi, Woo-Seok
    • Journal of Digital Convergence
    • /
    • v.14 no.12
    • /
    • pp.165-172
    • /
    • 2016
  • Since the advent of digital games with hardware development a key component of the game characters are changed to retard the rate at which types of users based on their favorite theory of human proportion. Many popular to gamers in the game according to the change in the retard rate in a unique image of the character. Studies on the head and body proportion are thought that up to now been insufficient. The purpose of this study is to examine a fundamental human proportion that has importance as a molding factor in the game character development, it investigated the characteristics of the game character, and classifying the retard rate of the game character, through the research method of analyzing the results, into the retard rate look for and investigate studying the effect on future game images. Five types of game characters that make up the analysis were analyzed with a unique image, and the more specialized users prefer retard rate, the figurative exaggeration to retard rate than the actual main body. Utilizing a bit exaggerated the difficulties of the character looks relatively small proportion character in the graphic wallpaper increased visibility. The proportion of a game character through the study is considered as a very important factor as the game image in the game development.

A Study on the Reinterpretation of ChonJu Palkyong for Improvement of Landscape Identity (경관정체성 향상을 위한 전주팔경의 해석에 관한 연구)

  • 신상섭;노재현
    • Journal of the Korean Institute of Landscape Architecture
    • /
    • v.26 no.4
    • /
    • pp.25-35
    • /
    • 1999
  • This thesis is to newly understand the value and the meaning of Chonju Palkyong(全州八景) by the specific gravity in making a counter-proposal in other to improve the landscape identity of modern city and at the same time. I intended to group the grafting device for the preservation and regeneration of modern history cultural environment through the interpretation of landscape construction. The meaning system of Chonju Palkyong showed the symbolic system which a landscape construction, four directions and two places has and exhibited the landscape shape possessing a luxuriant local feature peculiar to Chonju, preserving visual bound language of a classical Palkyong. Especially, it implies the use of the substantial landscape experienced factor, the expressions about natural phenomena and the matter which has melted human living circumstances. The landscape construction and it's form show the system which forms the different time field, a far landscape and a mid distance landscape and a near landscape, etc., under the visual, psychological, scenic influenced area, preserving the feature of the similar and typical type of Sosang Palkyoung(瀟湘八景) which intended to seek the local reappearance of the famous site experienced type and natural matter which famous place and local conduct were combined. The object space of Chonju Palkyong area representing the nature of historical landscape cultural assets, pushed by the greater part of the development based theory, shows injured aspects, but needs to play a part to seek such a up-to-date successive plan as the reconstruction of the destroyed historical landscape area which motivated Palkyong, the establishment of useful area, the embodiment of the cultural identity of Palkyong area and the becoming of the educational cultural life space. The analysis of the landscape construction of Chonju Palkyong and the grouping of the modern successive plan which I considered in this thesis, will be able to become a fundamental data to carry out the preservation of historical landscape and the landscape plan in the city.

  • PDF

Analysis of Sloshing Frequency Response in Rectangular Fuel-Storage Tank (사각형 연료탱크 내 슬로싱 주파수 응답 해석)

  • 조진래;이홍우;하세윤;박태학;이우용
    • Journal of the Computational Structural Engineering Institute of Korea
    • /
    • v.16 no.1
    • /
    • pp.95-104
    • /
    • 2003
  • This paper deals with the analytic and FEM analyses of sloshing frequency response of incompressible, invicid and irrotational flow in two dimensional rectangular tank. We use Laplace equation based on potential theory as governing equation. For small amplitude sloshing motion, the linearized free surface condition was applied and the analytic solution as obtained by the separation of variables. To simulate the effect of the energy dissipation due to viscous damping, artificial viscous coefficient is introduced and the divergence of response at resonance frequencies may be avoided by this coefficient. This problem was solved by FEM using 9-node elements in order to predict the maximum amplitude of sloshing response. Numerical results of free surface height, fluid pressure and fluid force show good agreement with those by analytic solution. After verifying the test FEM program, we analyze the frequency response characteristics of sloshing to the fluid height.

A Bifurcation Analysis of Space Structures by Using 3D Beam-Column Element Considering Finite Deformations and Bowing Effect (유한변형과 굽힘효과가 고려된 3차원 보-기둥요소에 의한 공간구조물의 분기좌굴해석)

  • Lee, Kyung-Soo;Han, Sang-Eul
    • Journal of the Computational Structural Engineering Institute of Korea
    • /
    • v.22 no.4
    • /
    • pp.307-314
    • /
    • 2009
  • The present paper briefly describes the space frame element and the fundamental strategies in computational elastic bifurcation theory of geometrically nonlinear, single load parameter conservative elastic spatial structures. A method for large deformation(rotation) analysis of space frame is based on an eulerian formulation, which takes into consideration the effects of large joint translations and rotations with finite deformation(rotation). The local member force-deformation relationships are based on the beam-column approach, and the change in member chord lengths caused by axial strain and flexural bowing are taken into account. and the derived geometric stiffness matrix is unsymmetric because of the fact that finite rotations are not commutative under addition. To detect the singular point such as bifurcation point, an iterative pin-pointing algorithm is proposed. And the path switching mode for bifurcation path is based on the non-negative eigen-value and it's corresponding eigen-vector. Some numerical examples for bifurcation analysis are carried out for a plane frame, plane circular arch and space dome structures are described.

Bending behaviour of FGM plates via a simple quasi-3D and 2D shear deformation theories

  • Youcef, Ali;Bourada, Mohamed;Draiche, Kada;Boucham, Belhadj;Bourada, Fouad;Addou, Farouk Yahia
    • Coupled systems mechanics
    • /
    • v.9 no.3
    • /
    • pp.237-264
    • /
    • 2020
  • This article investigates the static behaviour of functionally graded (FG) plates sometimes declared as advanced composite plates by using a simple and accurate quasi-3D and 2D hyperbolic higher-order shear deformation theories. The properties of functionally graded materials (FGMs) are assumed to vary continuously through the thickness direction according to exponential law distribution (E-FGM). The kinematics of the present theories is modeled with an undetermined integral component and satisfies the free transverse shear stress conditions on the top and bottom surfaces of the plate; therefore, it does not require the shear correction factor. The fundamental governing differential equations and boundary conditions of exponentially graded plates are derived by employing the static version of principle of virtual work. Analytical solutions for bending of EG plates subjected to sinusoidal distributed load are obtained for simply supported boundary conditions using Navier'is solution procedure developed in the double Fourier trigonometric series. The results for the displacements and stresses of geometrically different EG plates are presented and compared with 3D exact solution and with other quasi-3D and 2D higher-order shear deformation theories to verify the accuracy of the present theory.