• Transactions of the Korean Society of Mechanical Engineers A
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• v.26 no.9
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• pp.1822-1830
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• 2002

The paper describes the development of a decomposition based multidisciplinary design optimization (MDO) method that coordinates each of disciplinary subspace optimization (DSO). A multidisciplinary design system considered in the present study is decomposed into a number of subspaces based on their own design objective and constraints associated with engineering discipline. The coupled relations among subspaces are identified by interdisciplinary design variables. Each of subsystem level optimization, that is DSO would be performed in parallel, and the system level coordination is determined by the first order optimal sensitivities of subspace objective functions with respect to interdisciplinary design variables. The central of the present work resides on the formulation of system level coordination strategy and its capability in decomposition based MDO. A fluid-structure coupled design problem is explored as a test-bed to support the proposed MDO method.

• Journal of Korean Neurosurgical Society
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• v.57 no.3
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• pp.152-158
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• 2015

Objective : The purpose of this study to develop new deep-brain stimulation system for long-term use in animals, in order to develop a variety of neural prostheses. Methods : Our system has two distinguished features, which are the fully implanted system having wearable wireless power transfer and ability to change the parameter of stimulus parameter. It is useful for obtaining a variety of data from a long-term experiment. Results : To validate our system, we performed pre-clinical test in Parkinson's disease-rat models for 4 weeks. Through the in vivo test, we observed the possibility of not only long-term implantation and stability, but also free movement of animals. We confirmed that the electrical stimulation neither caused any side effect nor damaged the electrodes. Conclusion : We proved possibility of our system to conduct the long-term pre-clinical test in variety of parameter, which is available for development of neural prostheses.

• Environmental Engineering Research
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• v.18 no.2
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• pp.77-84
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• 2013

Recently, rainwater has come to the forefront as an alternative resource contributing to solving various environmental problems, especially those related to water. However, more or less biased perspectives on rainwater as a pollutant, mainly derived from acid rain, have still been pervasive in public as well as research communities. Considering the significance of rain harvesting in recent society, it is necessary to promote educational efforts to overcome such social prejudices and improve desired values towards rainwater. Thus, this research attempted to develop a teaching-learning program focusing on the theme of rainwater for high school students in Korea. To verify the effectiveness of the program, one group pre/post testing was conducted with 57 students participating in the courses. According to the survey, students show significant differences in both awareness and attitude towards rainwater as well as water after the courses. In conclusion, this study has an implication on developing an effective educational way to improve students' positive recognitions and attitudes regarding rainwater-related issues. Such an educational effort might contribute to sharing the worthiness of preserving rainwater with the future generation and promoting rainwater harvesting within wider public participation.

• Korean System Dynamics Review
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• v.16 no.3
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• pp.49-75
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• 2015

A company is a core of free market capitalism. It needs to be sustainable to make capitalism better. In this reason, a company has to be ethical to be longer, because unethical company can not be survival. It means that we should understand what is the ethical company and how to be. Because interdisciplinary exchanges give a hint to understand what and how from, so it was studied to find the academic theories which have a relationship with ethics or morality not only in the area of Business management, but also Psychology, Pedagogy, Ethics, Philosophy, and etc.. Making a visible structure by System Dynamics with results through interdisciplinary exchanges to understand the reason why unethical accidences are rising and damages are growing although companies pay "Ethics Pays" more and more to reduce immoral cases is the goal of this study. On the theory of "Social Ethics", 5 ways explain the reason why unethical behavior has not been demolished make a complex structure, which was founded from studying interdisciplinary exchanges such as "Ethics Pays", "Moral Reasoning", "Social Cost", and "Fallacy of Compositions". Finding the controllers and Factors of this model to control to be better, then the market could be more effective with lesser social cost.

• International Journal of Aeronautical and Space Sciences
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• v.14 no.4
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• pp.356-368
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• 2013

The Korea Aerospace Research Institute plans to launch a lunar module by 2025, and so is carrying out a preliminary study. Landing stability on the lunar surface is a key design factor of a lunar module. In this paper, a 1/6 scale model of a lunar module is investigated, for its landing stability on non-level surfaces. The lunar module has four tripod legs, with aluminum honeycomb shock absorbers in each leg strut. ADAMS$^{TM}$, the most widely used multi-body dynamics and motion analysis software, is used to simulate the module's lunar landing. Three types of dampers in the struts (rigid, viscous, and aluminum honeycomb dampers), and two types of lunar surfaces (rigid and elastic) are considered. The Sforce function is adopted, to model the aluminum honeycomb dampers. Details on the modeling and analysis of the landing stability of the 1/6 scale lunar module and the simulation results are provided in this paper.

• Fisheries and Aquatic Sciences
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• v.20 no.10
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• pp.26.1-26.9
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• 2017

Fishes in genus Sardinella are small pelagic species, which plays an important role in marine ecosystem as the first consumer. Those species are also commercially important, whose total catch reaches 278,600 tons in 2011 in Indonesia, but their identification has been difficult for their morphological similarity. In this study, we reported Sardinella jussieu for the first time in Indonesian coastal area (Banten Bay, Indonesia, $6^{\circ}\;0^{\prime}\;50.00^{{\prime}{\prime}}\;S-106^{\circ}\;10^{\prime}\;21.00^{{\prime}{\prime}}\;E$). We were able to confirm the species by both its morphological characteristics including the black spot at dorsal fin origin, the dusky pigmentation at caudal fin, 31 total scute numbers, and DNA sequence identity in the GenBank database by the molecular analysis. Its total mitochondrial genome was determined by the combination of next-generation sequencing and typical PCR strategy. The total mitochondrial genome of Sardinella jussieu (16,695 bp) encoded 13 proteins, 2 ribosomal RNAs, 22 transfer RNAs, and the putative control region. All protein-coding genes started with ATG and typical stop codon and ended with TAA or TAG except for ND4 in which AGA is used. Phylogenetic analyses of both COI region and full mitochondrial genome showed that S. jussieu is most closely related to Sardinella albella and Sardinella gibbosa

• Journal of Acupuncture Research
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• v.30 no.1
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• pp.13-22
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• 2013

Objectives : The aim of this study was to show the application to add the Dong-Qi therapy of the Dong-Si acupuncture to exercise therapy of the movement system impairment syndrome(MSIS) and to determine the best acupuncture point for the Dong-Qi therapy. Methods : We reviewed Diagnosis and Treatment of Movement Impairment Syndrome and Movement System Impairment Syndromes Of The Extremities, Cervical and Thoracic Spines written by Sahrmann SA. to show the exercise therapy of the sort of MSIS. We reviewed complete works of Yang Wei Jie to show the acupuncture points of the Dong-Si acupuncture and the Dong-Qi therapy. Results : We showed the acupuncture point of the Dong-Si acupuncture by each type of MSIS based on the reference book of MSIS, the Dong-Si acupuncture. Also, we selected and tabulated the best possible acupuncture point of the Dong-Si acupuncture which could minimize a side effect of acupuncture during the therapeutic exercise by each type of MSIS. Conclusion : A specific acupuncture point of the Dong-Si acupuncture could be chosen for a specific MSIS therapeutic exercise. The best possible acupuncture point could be chosen when selecting an acupuncture point of the Dong-Si acupuncture.

• Journal of the Korea Safety Management & Science
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• v.13 no.4
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• pp.253-261
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• 2011

The purpose of this paper is to construct the interfaced and interdisciplinary curriculum among departments of the industrial technology for enhancing an engineer's creative problem-solving ability and reflecting the industrial demands. This ability is one of the important objectives in modern engineering education. To achieve this purpose the research is performed as followings : (1) the curriculums of the departments of the industrial technology are surveyed and reviewed, and then (2) the relationship with the curriculums of the three departments of the industrial technology are analysed. (3) With this results the interfaced and interdisciplinary curriculums are constructed. (4) The integrated engineering education curriculum to enhance effectively the engineer's creative problem-solving ability and reflect the industrial demands is suggested.

• Preventive Nutrition and Food Science
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• v.19 no.4
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• pp.327-332
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• 2014

The purpose of the current study was to determine the effects of the introduction of polysaccharide chains onto the molecular surface of buckwheat proteins on buckwheat protein surface functionality. The whole buckwheat protein fraction (WBP) was prepared using 50 mM phosphate buffer (pH 7.5) containing 0.5 M NaCl and covalently linked with 6 kDa, 17.5 kDa, 40 kDa, 70 kDa, or 200 kDa dextran by Maillard-type glycation through controlled dry-heating at $60^{\circ}C$ and 79% relative humidity for two weeks. Conjugation with 40 kDa dextran improved the water solubility and emulsifying properties of WBP without causing a serious loss of available lysine; 84.9% of the free amino groups were conserved. In addition, we found that the introduction of dextran chains onto the molecular surfaces of WBP attenuated the antigenicity of WBP.

• Advances in nano research
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• v.1 no.3
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• pp.133-151
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• 2013

The availability of advanced nanotechnological methodologies (experimental and theoretical) has widened the investigation of biological/organic matter in interaction with substrates. Minerals are good candidates as substrates because they may present a wide variety of physico-chemical properties and surface nanostructures that can be used to actively condense and manipulate the biomolecules. Scanning Probe Microscopy (SPM) is one of the best suited techniques used to investigate at a single molecule level the surface interactions. In addition, the recent availability of high performance computing has increased the possibility to study quantum mechanically the interaction phenomena extending the number of atoms involved in the simulation. In the present paper, firstly we will briefly introduce new SPM technological developments and applications to investigate mineral surfaces and mineral-biomolecule interaction, then we will present results on the specific RNA-mineral interaction and recent basics and applicative achievements in the field of the interactions between other fundamental biological molecules and mineral surfaces from both an experimental and theoretical point of view.