• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.11 no.4
• /
• pp.1233-1238
• /
• 2010

The lighting industry has become the bigger and more systemized using the semiconductor LED with each control R(Red), G(Green), B(Blue). The communication standard DMX512(ANSI E1.11) protocol of it basically needs the address which can be distinguished between the lighting terminals. The conventional method has to give the address of the lighting any methods like dip switch, EEROM and PROM. Then the lighting terminal can receive RGB data from DMX512 communication. According to electrical characteristics DMX512 protocol has to the splitter every 32 lighting terminals. If 512 lightings is all connected, maximum 16 splitters are needed. This paper is solved above weakness in DMX512 protocol using serial connection all lighting terminals. Also I developed the intelligent lighting terminal with auto-addressing. This was solved the inconvenience of the address assignment and the usage of the splitter. The developed products is applied and selled the semiconductor lighting terminals using ON-OFF control, dimming control, sequential control and rainbow control.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.11 no.6
• /
• pp.2300-2305
• /
• 2010

This study was performed about color-contained mud to provide fun and diversity for the event of mud self massage as a core program of Boryeong Mud Festival which has become one of representative festivals in Korea. Adjusting its own lower brightness of mud and based on the primary study performed about the expressivity of yellowish colors, inorganic colors (oxidized steel in red, ultra marine pink, ultra marine blue, chrome oxide green) were added for the development of colored mud in diverse colors on the basis of Korean traditional colors. It had been judged about each expressivity of color by methods of colormeter, naked eyes inspection and feeling of usage, etc. For the color decided, it had been examined about the coloring when it got wet with the cleaning condition so that it can be used for the event of mud self massage as a program of Boryeong Mud Festival to increase diversity of the Festival and also attempted to develope colored mud to show Korean traditional colors.

• Journal of Hydrogen and New Energy
• /
• v.26 no.2
• /
• pp.105-113
• /
• 2015

In order to accelerate hydrogen society in current big renewable energy trend, it is very important that hydrogen can be transported and stored as a fuel in efficient and economical fashion. In this perspective, liquid hydrogen can be considered as one of the most prospective storage methods that can bring early arrival of the hydrogen society by its high gravimetric energy density. In this study, a small-scale hydrogen liquefier has been designed and developed to demonstrate direct hydrogen liquefaction technology. Gifford-McMahon (GM) cryocooler was employed to cool warm hydrogen gas to normal boiling point of hydrogen at 20K. Various cryogenic insulation technologies such as double walled vacuum vessels and multi-layer insulation were used to minimize heat leak from ambient. A liquid nitrogen assisted precooler, two ortho-para hydrogen catalytic converters, and highly efficient heat pipe were adapted to achieve the target liquefaction rate of 1L/hr. The liquefier has successfully demonstrated more than 1L/hr of hydrogen liquefaction. The system also has demonstrated its versatile usage as a very efficient 150L liquid hydrogen storage tank.

• Journal of the Korean Society of Costume
• /
• v.50 no.6
• /
• pp.127-142
• /
• 2000

The names of Chinese Po corresponding to Korean Jikryung are Yesal and Jikshin. Thus the purpose of this paper is to review of the shapes and usage of Yesal and Jikshin and then make a comparative review between the twos and Jikryung having side Moo. Results of the study are described as follows : 1. The Chinese costume, Yesal is translated literally into Korean, Euisal or Euisal Jikryung and called Euisal Diknyung or Uisakot in Korean while Jikshin is translated into Korean, Jikryung and called Diknyung. 2. Yesal is a new type of clothing as created during the Ming period. The costume is the remnant type of Yosunoja and Byunsunoja in the periods of Sung and Yuan. Types of Yesal are classified into two, or one whose rear part's upper and lower areas are connected with each other and whose front part's upper and lower areas are net, the other in which those upper and lower areas are disconnected both in front and rear parts. 3. Types of Jikshin are classified into two, one having Pa and the other having loot. The latter is re-classified into two, one whose sleeve is large and wide, the whole length of which is long and which was usually worn by Sain, and the other whose sleeve is small and narrow, the whole length of which is short and which was by the grass root. 4. Yesal and Jikryung both having Pa have the almost same shapes except their front parts. Baerae of the former is more curved than that of the latter. Also the both were used as official uniforms worn by civil and military officials from higher to lower levels. 5. Jikshin and Jikryung both having Pa have the same shapes. Baerae of the former is more curved than that of the latter. The both were used as official uniforms worn by civil and military officials under a King and as casual costumes by Sadaeboo. In terms of color, Jikshin and Jikryung both employed red, blue and green, Especially the red color was favorably used both in China and Chosen at that time.

• Journal of the Korean housing association
• /
• v.20 no.4
• /
• pp.79-88
• /
• 2009

A planned access method on constantly-changing-community unit plan changes and develops based on the periodical situation and also plan theory. In this research, it is to present the link between the theory of complex city change and the plan factor of it, and to show how Korean residential complex plan has changed as time passed and how new concept of city plan came up and by applying new methods how can this affect our real world and the past plan. In the phase of analysis, it analyzed the flow of 'community unit plan' and its theory and investigated the factor of compositional space and built a analysis frame. The factors of community unit plan are space structure, size and shape of block, population, distribution of facilities and movement system. It chose the place that can represent the flow of community unit plan trand and that indicates the obvious development leading to Jamsil (1975), Gwa Chun (1980), Mok Dong (1983), Sang Ge (1985), Ilsan (1989), Dong tan (2001) and Eun Jung (2003) total of 7 places. And to compare a similar size of the city, it selected a small community unit. Based on the result of theoretical study and prior research, it can be said that the space composition style has change from a whole complete complex area to a linked-cross over community unit and the access of urban level was on set. Also, a pedestrian walking area was secured and the dense of building structure and pleasant environment wanting need was in balance. For facility plans, the usage of facility and functional change brought change of type, size and disposition. The walking area for pedestrian became a huge matter. Therefore, market, education, public facilities and green system collaborated to co-build a whole community unit and activated the walking environment. Also, public transportation, environment friendly city organization was built.

• Journal of Conservation Science
• /
• v.29 no.2
• /
• pp.111-125
• /
• 2013

This study focused on making technique and usage of potteries from Proto-Three Kingdom to Baekje Kingdom in Balanri Site. The potteries were divided into four groups, Jungdo type I, Jungdo type II, Tanalanmun type and the Baekje type on the basis of the shape and physical properties. The Jungdo type potteries were used as kitchen wares, showing mostly yellowish brown color. The Tanalanmun type potteries were used as storages, showing gray green color. Firing temperature of the Jungdo type and the Baekje type potteries were presumed to be fired at 900 to $940^{\circ}C$, whereas the Tanalmun type potteries were fired at around 900 to $1,100^{\circ}C$. This is indicated that the firing condition was adjusted according to the purposes of the potteries. On the one hand, the Balanri potteries were made of paleo-soil which was collected in very near place from the site based on geochemical characteristics of the pottery clays and the soil.

• Korean Journal of Community Nutrition
• /
• v.8 no.4
• /
• pp.595-602
• /
• 2003

This study was carried out to investigate the status of the utilization of internet and dietary information by elementary school dietitians (total = 201) The results were summarized as follows: All subjects used the internet regularly and the major purpose they mentioned for using it was ″data search″ (72.3％). Those having a frequency of using the internet 6 to 7 times per week were 46.7％ of the subjects and the majority indicated the duration of their use of the internet was ″〈 2 hours″ (68.5％). They mainly used the internet at ″school″ (81.8％) , and their favorite search engines were ″Daum″ (41.1％) and ″Yahoo″ (34.7％). They stated that the organization that offered reliable internet information were those ″related to society and organizations″ (36.9％) and ″educational institutions″ (33.8％). Ninety-five percent of the subjects searched for dietary information mainly ″for public affairs″ (80.0％) Their degree of satisfaction when searching for information was high (78.7％). Those dissatisfied with internet sites when searching for dietary information give the following reasons: ″poor information″ (39.1％) and ″slow updates″ (25.4％). They acquired information on nutrition and health management mainly through ″the internet″ (63.6％) The most frequently requested information about public affairs was on ″Materials for nutritional education″ (38.6％) and ″up-to-date nutritional information″ (16.0％) . The desirable update periods for websites was ″1 -3 months″ (51.8％) and ″ < 1 month″ (30.6％), and the favorite site colors were ″blue″ (37.8％) and ″green″ (37.8％). The results of this study showed that, although the internet usage was high, the dietitians were dissatisfied with the information obtained. Therefore, the information donors should find out what kind of dietary information is needed by elementary school dietitians. (Korean J Community Nutrition 8(4) : 595-602, 2003)

• Korean Journal of Organic Agriculture
• /
• v.11 no.2
• /
• pp.91-101
• /
• 2003

This study was tried to examine the efficacy of apples that had grown with agro-chemical alternatives in an apple orchard. The chlorophyll content of apple leaves was a little higher in the plot of Charcoal powder, Chitosan, and Peat moss treatment among the other agro-chemical alternatives. On the contrary, the sugar content of apple fruits was higher in the plot of Amino acids, and Green ion calcium treatment, but there was quite a difference among them. Vitamin C content of apple fruits was high at the cell division period. It became lower at the hypertrophic period and then got higher again at the harvest. Vitamin C content was the highest in the chemical fertilizer plot as well. In an apple orchard where agro-chemical alternatives were used only, the commercial grade of ripened apples had declined by 25％, compared to those in customary cultivation. The commercial grade of ripened apples with agricultural chemicals using fertilizers and pesticides was over 90％ with over 250g of its weight in the plot of Charcoal powder, Amino acids, and Vitamin C treatment. Therefore. we guessed the environment-friendly method of cultivation in an apple orchard shall be established by reducing the usage of agricultural chemicals gradually and increasing the agro-chemical alternatives at the same time.

• Journal of Internet Computing and Services
• /
• v.14 no.5
• /
• pp.39-48
• /
• 2013

A cloud system has to deal with highly variable workloads resulting from dynamic usage patterns in order to keep the QoS within the predefined SLA. Aside from the aspects regarding services, another emerging concern is to keep the energy consumption at a minimum. This requires the cloud providers to consider energy and performance trade-off when allocating virtualized resources in cloud data centers. In this paper, we propose a resource provisioning approach based on dynamic thresholds to detect the workload level of the host machines. The VM selection policy uses utilization data to choose a VM for migration, while the VM allocation policy designates VMs to a host based on its service reputation. We evaluated our work through simulations and results show that our work outperforms non-power aware methods that don't support migration as well as those based on static thresholds and random selection policy.

• Journal of the Korean housing association
• /
• v.20 no.6
• /
• pp.111-118
• /
• 2009

In modern Asia major cities had same problem with lack of affordable housing for families. So they had to concentrate to the mass supply of housing and made some physical counter effects like high density of cities, limitation of parking space. Also people who lived in those cities could suffer from broken traditional community culture. To rebuild traditional community and increase land usage, Block housing is suggested as a new kind of multi-family housing for old town redevelopment. Now some governments are trying to make urban code to give some initiative for new block housing development in old city blocks. They expect this new housing type can help to solve serious problems like lack of parking area, green space and context of block. Also they hope that block housing development can help to increase safety of town and reduce cost of development. The purpose of this study is to review the establishment and development process of Block Housing and to confirm the aspect which has been changed with urban organization together. Also this study tried to find out the intentional characteristics of similarities and differences with comparison of Korea and Japan. And as a result we could find critical physical viewpoint, and provide considerations for future study and plan. Several cases of block housing in Korea and Japan were reviewed for comparative study and Post Occupancy Evaluation (POE) survey was examined to find satisfaction factors and problems which were expected to improved.