• Title/Summary/Keyword: Expand behavior

Search Result 232, Processing Time 0.024 seconds

A Development of 4-legged Walking Machine and the Enhancement of Static Stability Margin Using Balancing Weight (사각 보행 로보트의 제작 및 균형추를 이용한 안정성 향상에 관한 연구)

  • 강신천;오준호;정경민
    • Proceedings of the Korean Society of Precision Engineering Conference
    • /
    • 1991.11a
    • /
    • pp.146-154
    • /
    • 1991
  • As the application of robotic systems expand its scope, more research efforts are given in providing mobility to the robotic systems so that they can travel across various paths including those with formidable obstacles such as stairways or rough terrains. Legged locomotion is mainly concerned because the walking motion, like that of animal behavior, has many advantages over wheel type or track type locomotion especially in rough terrain. Walking robot, in general, having a discrete number of legs, have inherently low static stability. Static stability can be increased to a certain degree, by improving walking method, but it has many limitations such as reduced travel speed. A very promising possibility lies in the use of balancing weight, nevertheless its actual implementation is very rare. In this study, a 4-legged walking machine is developed and the static stability margin is increased with the balancing weight. In the future, this robot will be used to take an experiment on the walking in mush terrain.

  • PDF

Development of Bridge Expansion Joint for Fiber Reinforced Polymer Deck (FRP바닥판용 신축이음장치 개발)

  • Lee, Young-Ho;Park, Jong-Sup
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.8 no.2
    • /
    • pp.348-353
    • /
    • 2007
  • This paper presents design specifications and characteristics of bridge expansion joints to develop new type-joints in fiber reinforced polymer decks. Based on properties of the fiber reinforced polymer decks and fundamental process to calculate their expansion length, new expansion joints fur fiber reinforced polymer decks on typical steel or concrete girder are developed and proposed.

  • PDF

A Experimental Study on the Hydroelastic Behavior of Large Floating Offshore Structures (대형부체구조물(大型浮體構造物)의 유(流).탄성(彈性) 연성거동에 관한 실험적 고찰)

  • Lee, Sang-Yeob
    • Journal of Korean Association for Spatial Structures
    • /
    • v.1 no.2 s.2
    • /
    • pp.101-110
    • /
    • 2001
  • A large floating structure is attracting great attention in recent years from the view of ocean space utilization. Its huge scale in the horizontal directions compared with the wavelength and relatively shallow depth make this type of floating structure flexible and its wave-induced motion be characterized by the elastic deformation. In this paper, a boundary integral equation method is proposed to predict the wave-induced dynamic response mat-like floating offshore structure. The structure is modeled as an elastic plate and its elastic deformation is expressed as a superposition of free-vibration modes in air. This makes it straightforward to expand the well-established boundary integral technique for rigid floating bodies to include the hydroelastic effects. In order to validate the theoretical analysis, we compare with the experimental result of reduced model test. Satisfactory agreement is found between theory and experiment.

  • PDF

A Concept Analysis of Assertiveness (주장의 개념 분석)

  • Park Hyoung-Sook;Yang Young-Ok
    • Journal of Korean Academy of Nursing
    • /
    • v.36 no.3
    • /
    • pp.468-474
    • /
    • 2006
  • Purpose: The purpose of this study was to analyze and clarify the meaning of the concept, assertiveness. Method: This study used Walker and Avant's process of concept analysis. Results: 1. Attributes of assertiveness were defined as 1) Self-esteem 2) Comprehension to others 3) Clarification of the subject 4) Verbal communication 5) Non-verbal communication 2. The antecedents of assertiveness consist of these facts 1) The occurrence of a conflict situation 2) The occurrence of will to stick to one's opinions 3. There are consequences occuring as a result of assertiveness 1) Positive self-confidence 2) Increased comprehension or consideration to others 3) Expand of mutual respect 4) Maintenance of continuously cooperative relationship with each other 5) Output of acceptable results to each other Conclusion: Assertiveness is a core human behavior and is key to interpersonal relationships. Using the components of the concept of assertiveness, many conflicts in a nursing situation can be effectively prevented.

Study on Virtual Reality and E-commerce

  • Lee, Soowook;Oh, Younghwan
    • International Journal of Advanced Culture Technology
    • /
    • v.4 no.4
    • /
    • pp.70-74
    • /
    • 2016
  • Electronic commerce (E-commerce) using virtual reality (VR) has the advantage of being able to purchase products without restrictions of time and location by overcoming the limitations of existing offline transactions. It is still a rudimentary but fast growing technology, and the use of E-commerce in VR is expanding. The barriers that consumers might face in utilizing E-commerce in VR is the relevance to Information and Communications Technologies (ICT) technology. Fundamentally, it requires Internet access and use through PCs or mobile devices such as smart phones. Because unlike off-line markets, it is difficult to determine the purchase patterns of customers, customer purchasing behavior analysis must be done using computer access records. In order to expand and develop E-commerce in VR in the future, learning ability should be improved through combining with artificial neural network by deep learning that is recently in the spotlight, and the ability to overcome errors need to be improved to enable use in various fields.

The Media Influence on Consumers' Energy-Saving Technology Adoption in Korea: An Empirical Study

  • Koo, Chulmo;Chung, Namho
    • Asia pacific journal of information systems
    • /
    • v.26 no.1
    • /
    • pp.189-210
    • /
    • 2016
  • The current study attempts to expand our understanding of the determinants of energy-saving technology (EST) use by focusing on the individual aspects of environmental behaviors. This study integrates the hedonic, normative, and gain goals to explain the causal relationship between users and EST use. By adopting Goal-Framing Theory, this study proposed three individual goal frames in the environmental context: hedonic (perceived pleasurability), normative (social norms), and gain goals (legislative pressure and economic factor). Partial Least Square (PLS) was used to analyze the data from 104 respondents. Eight of the ten hypotheses were strongly supported. We found that social norms, perceived pleasurability, economic factor, and legislative pressure had positive and significant effects on attitude to EST use. Interestingly, we found that media influence did not have a severe effect on perceived pleasurability, and that the economic factor enforces mainly positive attitude to EST. Important theoretical and practical implications of these findings are discussed.

MultiRing An Efficient Hardware Accelerator for Design Rule Checking (멀티링 설계규칙검사를 위한 효과적인 하드웨어 가속기)

  • 노길수;경종민
    • Journal of the Korean Institute of Telematics and Electronics
    • /
    • v.24 no.6
    • /
    • pp.1040-1048
    • /
    • 1987
  • We propose a hardware architecture called Multiring which is applicable for various geometrical operations on rectilinear objects such as design rule checking in VLSI layout and many image processing operations including noise suppression and coutour extraction. It has both a fast execution speed and extremely high flexibility. The whole architecture is mainly divided into four parts` I/O between host and Multiring, ring memory, linear processor array and instruction decoder. Data transmission between host and Multiring is bit serial thereby reducing the bandwidth requirement for teh channel and the number of external pins, while each row data in the bit map stored in ring memory is processed in the corresponding processor in full parallelism. Each processor is simultaneously configured by the instruction decoder/controller to perform one of the 16 basic instructions such as Boolean (AND, OR, NOT, and Copy), geometrical(Expand and Shrink), and I/O operations each ring cycle, which gives Multiring maximal flexibility in terms of design rule change or the instruction set enhancement. Correct functional behavior of Multiring was confirmed by successfully running a software simulator having one-to-one structural correspondence to the Multiring hardware.

  • PDF

A theoretical study on the hydroelastic behavior of Large floating offshore structures (대형부체구조물(大型浮體構造物)의 유체(流體)·탄성체(彈性體) 연성거동의 이론적 해석에 관한 연구(硏究))

  • Lee, Sang-Yeob;Rha, Young-Ho
    • Journal of the Korean Society of Industry Convergence
    • /
    • v.4 no.4
    • /
    • pp.433-439
    • /
    • 2001
  • A large floating structure is attracting great attention in recent years from the view of ocean space utilization. Its huge scale in the horizontal directions compared with the wavelength and relatively shallow depth make this type of floating structure flexible and its wave-induced motion be characterized by the elastic deformation. In this paper, a boundary integral equation method is proposed to predict the wave-induced dynamic response mat-like floating offshore structure. The structure is modeled as an clastic plate and its elastic deformation is expressed as a superposition of free-vibration modes in air. This makes it straightforward to expand the well-established boundary integral technique for rigid floating bodies to include the hydroelastic effects. In order to validate the theoretical analysis, we compare with the experimental result of previous model test. Satisfactory agreement is found between theory and experiment.

  • PDF

A Study on Continued Use of Online Shopping Site Using a Weighted Expectation-Confirmation Model (가중화된 기대충족모형을 이용한 인터넷 쇼핑 사이트의 지속적 사용에 관한 연구)

  • Lee, Sun-Ro;Jung, Yon-Oh
    • Korean Management Science Review
    • /
    • v.25 no.3
    • /
    • pp.135-155
    • /
    • 2008
  • This paper investigates the value of the expectation-confirmation model(ECM) of IT continuance in the internet shopping environments and attempts to expand the ECM with consideration of users diverse internet shopping factors and their preferences. Here, the extended ECM measures the users expectation-confirmation separately at the product, site and service levels, rather than treating it a single construct as measured in the original model. Further, AHP has been used for assessing the relative importance among the shopping factors, and the priority has been used for deriving weighted expectation-confirmation levels in the model. PLS analysis shows that there are significant differences in path coefficients between the ECM and a weighted ECM. This Indicates that users preferences among the diverse shopping factors need to be properly assessed to better understand the relationship between users expectation-confirmation and their continued usage behavior.

Health Education in the Era of Health Promotion (건강증진시대의 보건교육)

  • 박형종;김공현
    • Korean Journal of Health Education and Promotion
    • /
    • v.8 no.2
    • /
    • pp.1-5
    • /
    • 1991
  • Definition of health education can be various depending on historical background and individual point of view. In the industrialized era when health promotion is given a high priority in health activities, health education could be defined as a combination of planned learning experiences and social actions, which expand health knowledge and experiences of individuals and communities in order to meet their health needs, change harmful health behaviors to be desirable for health promotion and motivate them to do that. To realize the proposed definition of health education, health education should develop new policies in harmony with health promotion, facilitate the development of human resources, reflect the modern educational technology, strengthen multisectoral approach, and pay more attention to monitoring and evaluation. To fulfill the above mentioned role, health education approach should shift foci from diseases to health orientation, from individualistic health behavior modification to a systematic change of the general public, from medical domination to recognition of lay competence and from authoritarian health education to supportive health education.

  • PDF