• Journal of Biosystems Engineering
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• 제35권3호
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• pp.206-213
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• 2010

The purpose of this study is to analyze musculoskeletal injuries in combine harvesting operation using a digital human model. In order to analyze problems in combine harvesting operation, the operations were broken into 5 work processes and then we preformed ergonomic and biomechanical analyses such as RULA test, Comfort Assessment and joint kinetic analysis for the each process. As a result, there was a clear need to change the combine operating environment, as the RULA score ranged from 4 to 7. In addition, we could find two major musculoskeletal injury factors which are the standing posture with upperbody forward tilting and inappropriate location of operating levers.

• 한국생활과학회지
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• 제3권1호
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• pp.15-21
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• 1994

In this critique, the mission of child/family professionals is reidentified as educators, researchers, and practitionars. In order to more effectively assist child and family in coping with a changing society, educators need to give serious attention to such issues as self-formation for the individuals and human relations for the families. The missons of researchers are shifted from quantitative to both qualitative and quantitative emphases. The micro - and macro - intervention are seen as primary two roles for the practitioners. Implications of these missions are discussed in terms of specific suggetions for the future direction. Consequently, challenges and opportunities abound for child/family professionals.

• 조명전기설비학회논문지
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• 제22권7호
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• pp.1-6
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• 2008

In industrial fields, human works are being replaced by robots. However, as the use of robots is limited in the process industry where they are operated fixedly, humanoid robots with wide applications need to be developed. Currently a great deal of research is being conducted on humanoid robots with the object of replacing humans in the workplace. However, because of the lack of relevant hardware and difficulty in mechanical parts, only very simple and limited progress is being made. In an effort to overcome these limitations, the purpose of the present study is to develop a kinematical mechanism and a controller. To this end, master arms with 3 degrees-of-freedom for the shoulders and the arms were composed which were able to reproduce human-like motions by simulating the characteristics of joint variables and the trajectory of the end-effector.

• 한국게임학회 논문지
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• 제2권2호
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• pp.10-19
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• 2002

현재의 게임은 단순한 공학적 산물의 개념을 뛰어넘어 디지털화된 오락문화요 생활문화로 인식되고 있다. 이에 인간의 개인적, 사회적 욕망과 욕구에 대한 정확한 분석은 게임을 디자인하는데 있어서 좀 더 과학적인 근간을 제공해 줄 수 있을 것이다. 인간의 근원적인 욕망과 그에 대한 보상을 위한 활동에 대한 연구는 이미 오래전부터 심리학자들을 중심으로 이루어져 왔다. 이를 바탕으로 플레이어가 게임에서 얻고자하는 바와 그에 대한 보상에 대하여 연구하였다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1990년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 26-27 Oct. 1990
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• pp.1246-1249
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• 1990

Japanese manufacturers have seen the market swing from a sellers' market to a buyers' market by dint of changes in the economic environment. Therefore, they have found the need to establish a production system in which products can be manufactured at the speed at which they are being sold and which achieve a competitive advantage. FA activity in Japan today has begun to change from local automation to totally integrated automation. This paper introduces a bottom to top based JIT-FA system and describes how to approach and introduce a CIM supported by human based systems. A fully automated CIM system is not only flexible but also rigid. However we can realize a flexible production line system by partially introducing human based systems including a decision support system.

• 제어로봇시스템학회논문지
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• 제15권1호
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• pp.111-119
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• 2009

For daily life interaction with human, robots need the capability of encoding and storing cognitive information and retrieving it contextually. In this paper, spatiotemporal grounding of cognitive information for a language based cognitive system is presented. The cognitive information of the event occurred at a robot is described with a sentence, stored in a memory, and retrieved contextually. Each sentence is parsed, discriminated with the functional type of it, and analyzed with argument structure for connecting to cognitive information. With the proposed grounding, the cognitive information is encoded to sentence form and stored in sentence memory with object descriptor. Sentences are retrieved for answering questions of human by searching temporal information from the sentence memory and doing spatial reasoning in schematic imagery. An experiment shows the feasibility and efficiency of the spatiotemporal grounding for advanced service robot.

• 대한가정학회지
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• 제35권5호
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• pp.119-129
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• 1997

The purpose of this study is to understand the meaning of‘housework’. In order to understand the intrinsic meaning of housework, we have to distinguish between ‘individual meaning’and‘institutional meaning’. The former is related to the concern, intent, habit, need, desire, and motivation of the given individual, while the latter is related to the social value, norm, and convention of human behavior. The majority of the studies on housework have been made by focusing on individual meaning. As the individual meaning of housework has gradually been emphasized, it has been forgotten that‘housework’itself is a very important part of‘home life’, and then the importance of home life has gradually diminished. Housework is naturally carried out in the process of human history, and housework reflect total human wisdom. In other words, it is thought that it is possible to grasp the total meaning of life in housework. Our life can be richer than now by increasing the quantity of philosophical analysis of the phenomena related to housework.

• Macromolecular Research
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• 제17권7호
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• pp.464-468
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• 2009

Gelatin nanoparticles derived from bovine or porcine have been developed as various types of drug delivery system, and they need to be cross-linked to maintain their physicochemical properties in aqueous environments. Although gelatin is a widely used material in pharmaceutical industries, the safety issue of animal-origin gelatins, such as transmissible mad cow disease and anaphylaxis, remains to be solved. The purpose of this study was to prepare type A gelatin (GA) nanoparticles by modified, two-step, desolvation method and compare the toxicity of the resulting GA nanoparticles with recombinant human gelatin (rHG) nanoparticles. The GA nanoparticles were characterized, and drug loading and release pattern were measured. FITC-BSA, a model protein, was efficiently loaded in the nanoparticles and then released in a biphasic and sustained release pattern without an initial burst. In particular, the cell viability of the GA nanoparticles was less than that of the rHG nanoparticles. This finding suggests that rHG nanoparticles should be considered as an alternative to animal-origin gelatin nanoparticles in order to minimize the safety problems.

• 한국CDE학회논문집
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• 제13권5호
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• pp.391-402
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• 2008

Today's product development environment is characterized as abrupt changes in consumer needs and short lifecycle of the product, which requires manufacturing companies to be equipped with time-to-market and time-to-volume strategies as prime factors for the successful product launch on market. They especially need to bring a product to the market faster with smart methodologies that enable assembly manufacturers to efficiently simulate and manage part assembly information throughout product development process. The research in this paper provides n e-manufacturing methodology considering geometric constraints in order to decide assembly process sequences. The methodology organizies the part layout (position & orientation) in order to optimize human postures during the assembly processes. As the case studies, assembly parts for two commercial products have been generated as CAD models and analyzed for the desired solutions for part assembly sequences using the proposed methodology.

• 한국식물학회:학술대회논문집
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• 한국식물학회 1985년도 워크샵 및 심포지엄 북한산국립공원의 식생
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• pp.23-33
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• 1985

Plant cell culture is emerging to express bioactive foreign proteins because it has several advantages in that it is safe, economical, genetically stable and eukaryotic expression system comparing with other expression systems. However several limitations such as slow growth rate, low expression level and lack of well established down stream process need to be answered. As a preliminary approach to produce the immunologically interested molecules through the plant cell culture, we tested if granulocyte-macrophage colony stimulating factors (GM-CSFs) from both murine (mGM-CSF) and human (hGM-CSF) are produced as a biologically active form through plant cell culture. The murine and human GM-CSF genes were cloned into the plant expression vector, pBI121, and Ti-plasmid mediated transformation of tobacco leaves was conducted using Agrobacterium tumefaciens harboring both recombinant GM-CSF (rGM-CSF) genes. Cell suspension culture was established from the leaf-derived calli of transgenic tobacco plant. Northern blot analysis indicated the expression of the introduced mGM-CSF gene in both transgenic plant and cell suspension cultures. In addition, the biological activities of both murine and human GM-CSF from plant cell culture were confirmed by measuring the proliferation of the GM-CSF dependent FDC-PI and TF-1 cells, respectively.