• Archives of design research
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• v.12 no.2
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• pp.43-50
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• 1999

The purpose of this study is to suggest the standard size of a bench in the park. To obtain the basic shapes and size of a bench in the park, several parks are selected as a sample which is located in 6 major cities in Korea. Those obtained basic data of a bench are compared to standard size of a bench in United State and Japan and then human engineering concepts are applied to determine the optimal standard size. Furthermore the standard size of a bench is suggested in two classifications. One for the adults and the other for the children. This study is limited to a determining the standard size of a bench but in the future study, overall facilities in the park for the human being ha<> to be examined.

• International Journal of Industrial Entomology and Biomaterials
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• v.33 no.2
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• pp.50-53
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• 2016

The size of head capsule is one of the most important factors for identifying developmental stage. In order to understand the developmental characteristics of the butterfly Atrophaneura alcinous, we examined fluctuations in larval head capsule size under three different temperature conditions (20, 25, and $30^{\circ}C$) and 60% humidity. As a result, larvae developed to the fifth instar at all three temperatures. The head capsule size of larvae tended to be larger at the lowest temperature and smaller at the highest temperature. The development rate showed a regular change, consistent with Dyar's rule regarding head capsule size development. Furthermore, the development of head capsule size was found to correspond to a second degree polynomial regression better than to a linear regression. On the basis of these results, it would appear to be possible to perform an accurate assessment of instar status during the development of A. alcinous.

• Journal of Environmental Science International
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• v.2 no.3
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• pp.201-206
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• 1993

The concentration of Total Suspended Particulates(T.S.P), size distribution of suspended particulates, and soluble anions of T.S.P in atmosphere of industrial region in Busan were investigated. T.S.P was measured by High-Volume Air Sampler and particle size distribution was measured by Anderson Air Sampler. We analyzed the chemical component of the T.S.P by ion Chromatography and measure4 the shape and size of T.S.P by Scanning Electron Micrography The small size of T.S.P mainly exist in industrial region, but the large size of T.S.P mainly exist in residentail area.

• Journal of the Korean Ceramic Society
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• v.39 no.10
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• pp.1007-1010
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• 2002

Alpha alumina platelet particles were synthesized from the powder mixture of ${\gamma}-Al_2O_3and\;Na_2SO_4$ with the use of microwave heating. The characteristics of the particles such as particle size and particle size distribution were compared with those of particles obtained from the same mixture without the use of microwave. Sample with the use of microwave showed small particle size and narrow particle size distribution compared to that without the use of microwave.

• Bulletin of the Korean Chemical Society
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• v.33 no.6
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• pp.1962-1966
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• 2012

Boehmite sols have been prepared by crystallization of amorphous aluminum hydroxide gel obtained by hydrolysis and peptization of aluminum using acetic acid. The size of the boehmite crystallites could be controlled by Al molar concentration in amorphous gel by means of controlling grain growth at nucleation stage. The size of boehmite increases as a function of Al molar concentration. With increasing boehmite crystallite size, the $d_{(020)}$ spacing and the specific surface area decreases, whereas the pore volume increases along with pore size. Especially, the pore size of the boehmite sol particles is comparable to the crystallite size along the b axis, suggesting that the fibril thickness along the b axis among the crystallite dimensions of the boehmite contributes to the pore size. Therefore, the physical properties of boehmite sols can be determined by the crystallite size controlled as a function of initial Al concentration.

• Journal of the Korean housing association
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• v.17 no.2
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• pp.27-39
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• 2006

The purpose of this study was to present a guideline for the construction of children park that can create a quality of dwelling and be easily approached and utilized by residents. In order to present a direction of planning, the investigator examined the actual state of children park in low-rise house residential area, and analyzed its general characteristics. And the discriminative characteristics according to the standpoints of planning of children park. The analytic standpoints were classified into the size and disposition of park, the nature of adjacent street and the utilization of park, and the satisfaction and requirement for the internal space of park. The guideline of planning of children park are as follow: (1) The disposition and size of children park: the children park must be disposed convenient use of all the residents. (2) The environment around including approaching streets and facilities around: residents' recognition and access in their everyday life must be considered in relation to the neighborhood streets and surrounding facilities. (3) The composition and utilization of internal space: the internal space must support all the activities of users, and reflect users' requirements in order to induce them to use it continuously.

• Journal of the Korean Society for Nondestructive Testing
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• v.5 no.2
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• pp.34-41
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• 1986

The ultrasonical characteristics of inclined planar reflectors is investigated by the maximum amplitude method. The reflected ultrasound is varied by the reflector size, shape, inclination and using transducers. It was found that the detecting ability for planar reflectors was decreased with increasing transducer size and misorientation angle and increased with decreasing ultrasonic frequency, also the misorientation angle of planar reflectors affected significantly for the measurement of refklector size.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2002.04a
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• pp.159-160
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• 2002

Soil dust particles transported from loess regions of the Asian continent, called Asian dust, highly influences the air quality of north-eastern Asia and the northern Pacific Ocean. The effects of these dust storms, on the chemical composition of atmospheric aerosol particles with different size, was investigated. Measurements of size distributions of total aerosol and major ion species were carried out on Jeju Island, Korea. (omitted)

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.46 no.3
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• pp.195-203
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• 2010

Recently, Fishermen have required to expand the circumference of trap entrance for conger eel because it was difficult to take the catch out as well as to put the baits into. A series of fishing experiments was carried out in coastal areas of Tongyoung, Korea in 2008 and 2009 using the traps to describe the effect of the entrance size on the catch. The experimental traps (five types) were used in filed experiments with four types circumference size traps (140, 180, 220 and 260mm) with mesh size 22mm and another type was used the same one usually using in filed with mesh size 35mm (750mm circumference). The experiment results were, the conger eels of total length 35mm more or so were caught 85, 93, 142 and 176 individual by the experiment traps with mesh size 22mm as increase circumference size from 140mm to 260mm, respectively. And the small conger eels of the total length below 35mm to be prohibited to catch by law were caught 145, 160, 288 and 304 individual according to increase the circumference size of trap, respectively. In addition, in case of the trap with mesh size 22mm, bycatches were 230 - 260 individuals and much more than bycatches of the trap with mesh size 35mm. In conclusion, when we expand the circumference size of trap according to fishermen's requirement, we should review not only economic of fishery but also increasement the bycatch of non-target fishes and small size fishes.

• Proceedings of the KIEE Conference
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• 1987.11a
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• pp.213-215
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• 1987

In this paper, influences or grain size on the electro-optic properties were studied on the penferroelectric PLZT ceramics. The specimens were fabricated by the two stage sintering method. Relative permittivity was a little increased with the increment or grain size in 9,9.5/65/35 (La/Zr/Ti) PLZT specimens, and Curie temperature was decreased in the 9.5/65/35 specimens but constant in the 9.5/65/35 specimens. As the grain size was increased, field induced polarization and dP/dE were increased. Because domain walls can be easily moved by electric field. Light transmittance was increased in the 9/65/35 PLZT specimens but there was little effect on the grain size in the 9.5/65/35 PLZT specimens.