• Journal of Powder Materials
• /
• v.11 no.6 s.47
• /
• pp.503-509
• /
• 2004

Dispersion stabilities and photocatalytic activities of rutile $TiO_{2}$ powders with unique nano-structure synthesized by homogeneous precipitation process at low temperature(HPPLT) have been investigated in the acrylic resin containing fluorostyrene in the range of 0~0.16 mole. Isoelectric point of $TiO_{2}$ in the acrylic resin placed in the neutral region whereas that of $TiO_{2}$ in the water placed in the acidic region, indicating that zeta potential and agglomeration of $TiO_{2}$ powder is strongly dependent on the pH and the type of solvent. To prepare an adhesion, an acrylic resin containing fluorostyrene was synthesized by a radical polymerization. The adhesion of coating layer was increased with increasing fluorostyrene's contents without changing the dispersion stabilities and degrading photocatalytic properties.

• The Korean Journal of Health Service Management
• /
• v.6 no.4
• /
• pp.231-243
• /
• 2012

This study is aimed to improve future-oriented curriculum by investigating the satisfaction of students from beauty art-related departments on their curriculum and major courses and proposing their basic direction and improvement plan. For this, a survey was conducted against students from beauty art-related departments in Busan (5 junior colleges and 1 four-year university). The following results were obtained: First, according to a correlation analysis on major questionnaire items on the curriculum in beauty art-related departments, statistical significance was observed in 'curriculum development', 'facility and administrative & financial supports', 'instructor/teacher activities', 'educational evaluation activities', 'academia-industry cooperation activities' and 'output evaluation'. In terms of educational satisfaction, statistical significance was observed in all positive relations. Second, according to regression analysis on the evaluation of curriculum output factors in beauty art-related departments, output factor levels were high as 'academia-industry cooperation activities', 'age', 'teacher/instructor activities', curriculum requirement analysis' and 'curriculum development' were high. In overall, relatively good results (69.0%) were observed. A further study needs to be performed for improvement of satisfaction of students majoring in beauty art on their curriculum in educating students from beauty art-related departments by applying their educational evaluation to optimum standards.

• Nuclear Engineering and Technology
• /
• v.39 no.3
• /
• pp.187-192
• /
• 2007

The basic research on fast reactor technology was started in the mid-1960's in China. The emphasis was put on fast reactor neutronics, thermohydraulics, sodium technology, materials, fuels, safety, sodium devices and instrumentation. In 1987, the research turned to applied basic research with the conceptual design of a 60 MW experimental fast reactor as a target. The Project of the China Experimental Fast Reactor(CEFR) with a thermal power 65 MW was launched in 1993. The R&D of fast reactor technology then carried out to serve a design demonstration connected with the different phases of the conceptual, preliminary and detailed design of the CEFR. Recently, three directions of fast rector technology R&D activities have been considered, and some research programs have been developed. They are: (1) R&D related to the CEFR, i.e. experiments to be conducted on the CEFR for its safe operation, (2) R&D related to the projects of a prototype and the demonstration of fast reactors, and(3) advanced SFR technology within the framework of the international cooperation of INPRO and GIF.

• Proceedings of the Technology Innovation Conference
• /
• 1997.07a
• /
• pp.195-221
• /
• 1997

This study examines the changing patterns of technological cooperation activities along technological development stages. Based on the longitudinal sample of 58 small and medium-sized companies in telecommunication equipment and device sectors, proposed hypotheses are tested using paired comparison t-test, ANOVA and multiple regression analysis. Major findings of this study are as follows. Along technological development stages, (1) patterns of technological cooperation activities differ in terms of the extent and diversity of use, partners, method, and motivation and (2) the impact of specific forms of technological cooperation activities on the firm's technological innovation varies. In addition, some managerial and policy implications are presented and future research directions are suggested.

• IE interfaces
• /
• v.14 no.2
• /
• pp.120-126
• /
• 2001

Virtual manufacturing is a technology facilitating effective development and agile manufacturing of products via sophisticated computer models representing physical and logical schema and behavior of real manufacturing systems including manufacturing resources, environments, and products. Based on these models, virtual manufacturing supports decision making and error checking in the entire manufacturing processes from design to mass production. At first, we analyzed manufacturing preparation activities of the four major production shops such as press, body assembly, painting and final assembly, of a Korean automotive company. We then developed the workflow models out of the analysis by the IDEF methodology, and generated a strategic plan for the systematic application of the virtual manufacturing technologies. We identified many manufacturing preparation activities that can be improved by the application of virtual manufacturing technologies. Finally, we estimated the effect of improvement including time savings in car development processes and corresponding cost savings.

• Korean Journal of Food Science and Technology
• /
• v.53 no.2
• /
• pp.126-132
• /
• 2021

Cheonggukjang (CGJ) is a famous traditional Korean food that is typically produced by fermenting steamed soybean seeds and has a unique flavor and taste. The objective of this study was to evaluate the effect of addition of lotus seeds on the quality and antioxidant activities of CGJ. Color value, 1,1-diphenly-2-picrylhydrazyl radical scavenging potential, and the amounts of total polyphenol, total flavonoid, mineral, and free amino acid were evaluated. The CGJ sample produced with lotus alone or a mixture of soybean and lotus produced in Korea showed relatively high antioxidant potential. The amount of essential and total free amino acids was also high in the sample prepared with lotus seeds grown in Korea. On the other hand, the total mineral content was low in the lotus-based samples. The results indicated that a mixture of an equal proportion of soybean and lotus seeds could be a good option to prepare nutritious CGJ.

• Journal of Appropriate Technology
• /
• v.7 no.2
• /
• pp.144-150
• /
• 2021

The purpose of this paper is to introduce representative appropriate technology research organizations operating in France. Among them, we would like to investigate and introduce five institutions that have acquired a lot of experience due to their long history. Institut de Recherche pour le Développement (IRD) is a government-funded institution that strengthens science and technology infrastructure in Africa and overseas territories with the aim of supporting and educating science communities in developing countries, and conducts collaborative research with more diverse developing countries. Antenna France is an NGO organization whose main activity is to improve malnutrition in Africa. Ingénieurs sans frontiers is an NGO organization that sets sustainable development as the main goal of the association's activities and leads various activities such as education. Terre & Humanism is an NGO organization that practices ecological agriculture and carries out a social change movement urging to respect life and land, and to constitute an alternative society. Humanitarian Design Bureau is a corporation concept company that mainly carries out R&D for environmentally friendly products necessary for NGO activities.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.18 no.3
• /
• pp.469-477
• /
• 2017

Cloud computing is an IT resource providing technology to various users by using virtualization technology. Newly updated spatial information may not be used by other organizations since management authorities are dispersed for Korean public spatial information. Further, the national budget is wasted since each organization independently implements renewable GIS analysis function. These problems can be solved by applying cloud service. However, research related to the application of cloud service to Korea spatial information system has been proposed in the technology development direction, and no detailed development plan has been proposed. In this paper, we deal with the establishment of a technology development plan for national spatial information infrastructure cloud service. First, we deduct the implication to derive the technology development goals by analyzing the political and technical environment. Second, technology and critical technology elements are derived to achieve the goals of the specialist's analysis based on the evaluation elements. As a result, thirteen critical technology elements are derived. Finally, thirty-one research activities, which comprise the critical technology elements, are defined. Critical technology elements and research activities derived in this research will be used for the generation of a technology development road-map.

• Food Science and Biotechnology
• /
• v.18 no.3
• /
• pp.604-609
• /
• 2009

The antioxidative activities of the water solution of crude extract from edible mushroom enokitake Flammulina velutipes were compared with those of ascorbic acid and ascorbic acid 6-palmitate in oil-in-water (O/W) emulsions of cod liver oil. Oxidation of the emulsions was carried out at 40 and $50^{\circ}C$ in the dark. The antioxidant activities were measured by in vitro assay against oxygen uptake, 2-thiobarbituric acid value, hydroperoxide formation of the oils. Also, residual docosahexaenoic acid content was measured as indices of lipid oxidation. The cod liver oil in O/W emulsions with added enokitake crude extract (ECE) was significantly more stable against lipid oxidation than the control emulsions without the extract in terms of any oxidation indices used. Moreover, ECE provided remarkable antioxidative properties to eicosapentaenoic acid ethyl ester in emulsion system. These observations demonstrate that F. velutipes can be used as a natural antioxidant, which effectively prevents oxidation of polyunsaturated oils in emulsion system.

• Journal of Convergence for Information Technology
• /
• v.9 no.7
• /
• pp.122-134
• /
• 2019

The purpose of this research is to analyze the effect on children's creativity and nutrition knowledge of cooking activities by applying recipe development. The procedure consists 7 steps which are diagnosing a necessity, setting a basic direction, setting ingredients and topics of the activity, designing some models of the activity, designing some developed activity, lastly completing the creative cooking activity. The model of this activities consists 5 steps which are exploring the ingredients, creating a recipe, practising the activities, representing the activities, lastly evaluation the activities. Participants were 36 children who are 4 to 5 years old from K daycare center located in Busan. The results exhibited that creativity and nutrition knowledge of experimental group is significantly higher than comparative group. The creative cooking activity by applying recipe development is effective for advancing in creativity and getting nutrition knowledge of children.