As the importance of the indoor environment increases. In response to that, performance test study was conducted for the development of high performance range hood. And the chamber casing mock-up was subjected to a performance test by applying a static pressure of 100[Pa] in accordance with KS C 9304: 2020, When the discharge port diameter was 100 mm, the standard flow rate() was 186.9 at 60.8W, the discharge port diameter was 125 mm, and the standard flow rate() at 52.0W was 184.6, which satisfies “B-type 160 to 200 (static pressure 100Pa)”. This is a result that meets the KS C 9304 : 2020.

Phalaenopsis ‘KS Little Gem’ is a new cultivar with superior ornamental qualities. Newly produced cultivars are often studied to determine the optimum growing conditions, as production management practices vary within species. We focused on the effects of temperature and fertilizer application on the growth and carbohydrate content of ‘KS Little Gem’ plantlets. Two-month-old plantlets were subjected to different temperatures (20, 25, and 30°C) and fertilizer rates (0.33, 0.5, and 1 g･L-1) inside a growth chamber. Data were collected from leaves and roots regarding their growth, fresh weight, sugar content, and starch content. The results revealed that temperature significantly affected leaves and roots parameters, fresh weight, and carbohydrate content of the plantlets. However, fertilizer rates alone showed no significant effects on the growth and carbohydrate content of plantlets. The highest leaf and root growth, root fresh weight, and leaf carbohydrate content were observed in plantlets subjected to 25°C. In addition, ‘KS Little Gem’ plants grown under 30°C had significantly inhibited growth and reduced carbohydrate content in both the leaves and roots.

A finite element impact simulation study was performed to assess structural performances of a guard-rail system for roadside using new steel materials (SS275) in the KS standard. The type SS275 shows an enhanced tensile strength in comparison with the former type SS400. Subsequent simulation results present that the improved model performs much better in containing and redirecting the impacting vehicle in a stable manner. The numerical results for various parameters are verified by comparing different models with dynamic responses determined in the barrier from the crash simulation.

표준은 산업발전 및 무역 자유화의 기반이며 사회 · 경제적인 효율을 향상시키는 중요한 수단이다. 표준과 관련된 정책은 국가적인 차원에서 중요한 이슈 중 하나가 되고 있으며, 이에 따라 산업 분야별 한국산업표준 제정과 활용에 대한 분석은 표준과 관련된 연 구에서 중요한 부분이 되고 있다. 본 연구는 분야별 KS 보유 및 제정현황 분석 그리고 열람실적을 이용하여 표준의 활용도 를 분석한다. 먼저 KS의 보유현황을 국가정책적인 이슈와 함께 살펴보고, 세부적으로 KS 제 정현황이 유사한 분야들은 무엇인지 파악하기 위해 다차원 척도법을 이용하여 시각화 및 군 집화를 실시한다. 이후 각 군집별 제정현황이 유사한 분야들의 표준화 제정활동에 영향을 미 치는 결정요인이 무엇인지 가설설정에 따른 회귀분석을 실시한다. 연구결과 자본집약도, 연구개발 그리고 매출액이 표준화 제정활동에 영향을 미치는 것으로 나타났다. 이에 따라 정부 는 자본집약도가 큰 기업들이 표준화 과정에서 선도적 역할을 유도하고, 연구개발에 따른 표 준과 기술특허 등을 정책적으로 연계시키며, 매출액이 큰 기업들이 표준화 활동을 선도하도 록 지원정책을 수립해야 한다. 두 번째로 표준의 활용도를 분석하기 위해, KS 열람실적 데이 터를 사용하며, 각 KS의 제정연도, 형태 분야별 활용도가 어떻게 다른지 기초통계분석과 의 사결정나무를 사용하여 분석을 수행한다. 그 결과 표준의 제정시기가 활용도에 영향을 크게 미치며, 특정 분야와 형태의 KS들은 최근에 제정되었더라도 활용도가 높은 것으로 나타났 다. 이에 따라 열람실적이 낮은 표준들에 대한 홍보 정책과 함께, 표준을 제정할 때 미열람되 는 표준이 적어지도록 활용도를 고려하는 정책을 수립해야 한다.

소형 다화 분지성의 품종을 육성하기 위하여 호접란 ‘KSVivien’은 2004년 강산난원에서 Dtps. ‘Sogo Vivien’과‘Brother Little Hatter’을 각각을 모부본으로 교배하여 육성한 F1개체 중에서 선발한 소형 다화 분지성의 신품종이다. 2005~2006년에 걸쳐 실생개체 중에서 영양생장과 개화특성이 우수한 개체 KS-507-9를 선발하였다. 2007년과 2009년에 각각 1차, 2차 특성검정을 통하여 품종의 안정성과 균일성을 확인하고 ‘KS Vivien’으로 명명하였다.‘KS Vivien’은 화색이 연분홍(2N81B)에 줄무니가 있는스트라이프계통이며, 화형은 앉아피기로 꽃의 길이와 폭은 각각 4.0, 4.3cm로 소형이다. 화서의 형태는 분지하는복총상화서이다. 잎의 길이와 폭은 각각 9.9, 6.4cm이며엽형은 좁은 도난형의 반직립이다. 기내증식율이 높고 식물체가 강건하고 생육이 빠르기 때문에 재배가 용이한 품종이다. 2010년 11월 11일 품종등록(등록번호 제3377호)하여 종자산업법에 의해 보호받고 있다.

The circular hollow section is usually used for member of main frame to carry the external load in single layer lattice dome. But, the H-shaped section may be used for member of main frame since it is convenient for attaching roof panels. Single layer lattice domes have various buckling characteristics, such as the overall buckling, the member buckling, and nodal buckling. The purpose of this study is to compare buckling characteristics of single-layer lattice domes in which the H-shaped steel section as the existing domestically-produced structural steel is used as main frames to those of domes in which a circular hollow section is used as main frames.

PURPOSES: It is important to consider the long-term performance of concrete pavement, because concrete pavement is more exposed to the various environmental conditions than any other concrete structures. One of the several methods to evaluate the long-term performance of concrete during winter is KS F 2456. Relative dynamic modulus of elasticity shows the resistance to freezing and thawing. METHODS: To measure relative dynamic modulus of elasticity, ultra sonic is generally used. But in this study, to measure the relative dynamic modulus of elasticity, both ultra sonic and shear wave were used and then compared each other. RESULTS: The results from the measurement by ultrasonic wave and shear wave were divided into three types. Type 1 : Specimens are good and relative dynamic modulus of elasticity did not decrease until 300 cycle. Type 2 : The relative dynamic modulus of elasticity decreased from the late cycle.(about 150 cycle later) Type 3 : The relative dynamic modulus of elasticity consistently decreased from the beginning. As a result of ANOVA, there is no difference according to measuring method, in type 2 and 3. But there is a difference according to measuring method, in type 1's relative dynamic modulus of elasticity. CONCLUSIONS: It is proved that shear wave can be used to understand the damage tendency of relative freezing and thawing and to measure the relative dynamic modulus of elasticity.

This paper constitutes a second report regarding an experiment examining the relationship between color recognition and concomitant color expressions as experienced by middle school students and high school students. The experiment’s protocol required three steps: first, sixty subjects viewed 308 color chips; next, they recorded by themselves the proper color terms for those color chips; last, they selected the proper color terms matching both color chips and color terms. This experiment yielded several notable discoveries related to color recognition and concomitant color expressions. First, in the task examining systemic color terms, only 22.72% answers corresponded with the systemic color terms of KS A 0011. Especially notable was that the ‘Yellow’ color terms (31.35%) were at the top of the correspondence degree and the ‘Red’ color terms (16.58%) were at the bottom degree. Second, the task relating to idiomatic color terms revealed that ‘Namsack (dark blue), Bora (deep purple), Jaju (deep purplish red)’ color terms (23.33%) were at the top level and ‘Red’ color terms were at the bottom. Next, we elucidated three controversial points regarding KS A 0011: Lee, Hyun-hee․Shin, Ho-cheol. 2012. The Color Recognition and Color Expression of Co-relationship (2): A Critical Viewpoint of the National Standard Color Name ‘KS A 0011’. The Sociolinguistic Journal of Korea 20(1). pp. 235-265. This paper constitutes a second report regarding an experiment examining the relationship between color recognition and concomitant color expressions as experienced by middle school students and high school students. The experiment’s protocol required three steps: first, sixty subjects viewed 308 color chips; next, they recorded by themselves the proper color terms for those color chips; last, they selected the proper color terms matching both color chips and color terms. This experiment yielded several notable discoveries related to color recognition and concomitant color expressions. First, in the task examining systemic color terms, only 22.72% answers corresponded with the systemic color terms of KS A 0011. Especially notable was that the ‘Yellow’ color terms (31.35%) were at the top of the correspondence degree and the ‘Red’ color terms (16.58%) were at the bottom degree. Second, the task relating to idiomatic color terms revealed that ‘Namsack (dark blue), Bora (deep purple), Jaju (deep purplish red)’ color terms (23.33%) were at the top level and ‘Red’ color terms were at the bottom. Next, we elucidated three controversial points regarding KS A 0011: modifying adjectives, division of complex colors and combination of systemic color terms.