• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 춘계 학술논문 발표대회 2부
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• pp.105-109
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• 2011

This study is concerned with the development of the SL inorganic floor covering. First, volatile organic compounds, inorganic test profile on the SL through the flooring is environment-friendly inorganic noncombustible floor finishes the event of fire toxic gases (such as volatile organic compounds) emissions have been identified as not at all. Second, SL-breathable material, the concrete floor to prevent aging, long life, which are three levels of noise, shock-absorbing function was decreased. Third, SL economic analysis of mineral flooring terrazzo tile floors compared with the normal material. On a terrazzo tile cost 13,500 won ~ 24,500 won, but It have found that, in terms of labor SL 36,899 won ~ 38,899 won flooring mineral balance. Occurs in the total amount when compared with terrazzo tile floors and 25,399 won 3T, 5T and economical analysis concludes that the original 12,399 won.

• 한국화재소방학회:학술대회논문집
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• 한국화재소방학회 2002년도 추계학술대회논문집
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• pp.73-80
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• 2002

• 한국산업보건학회지
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• 제7권1호
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• pp.71-85
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• 1997

The purpose of this study was to evaluate concentrations of organic solvent mixtures in air of rotogravure printing workplaces. Qualitative and quantitative analysis of organic solvents contained in the gravure inks used at rotogravure factories had been done. The results obtained were as follows: 1. The gravure inks mainly consist of toluene, methyl ethyl ketone(MEK), and ethyl acetate(EA), and traces of isopropyl alcohol(IPA), xylene, 2-butanol, cyclohexane, cellosolve etc were also contained in them. 2. Thinner used as a diluent consist of toluene, MEK, and EA. 3. Geometric mean concentration of toluene in ambient air were 23.81 ppm at gravure printing of packing material, 42.10 ppm at gravure printing of wallpaper, 16.95 ppm at gravure printing of plastic bottle for beverage and 4.31 ppm at gravure printing of plywood printing or floor covering. Concentrations of toluene in ambient air showed statistically significant difference between types of printing. 4. Concentrations of MEK in ambient air were 12.43 ppm at gravure printing of packing material, 5.47 ppm at gravure printing of wallpaper, 16.78 ppm at gravure printing of plastic bottle for beverage and 16.44 ppm at gravure printing of plywood printing or floor covering. MEK concentrations in ambient air showed no significant difference. 5. Conentrations of EA were 14.30 ppm at gravure printing of packing material, 1.92 ppm at gravure printing of wallpaper and 21.12 ppm at gravure printing of plywood printing or floor covering. EA concentrations in ambient air shown significant difference. 6. Percentage of the workplaces where the ambient air concentration of organic solvent mixtures exceeded the Korean Permissble Exposure Level(KPEL) amounted to 18.03%. 7. Toluene concentrations in ambient air of rotogravure printing workplaces ranged from 0.69 to 156.02 ppm and urinary hippuric acid excretion ranged from 0.10 to $1.32g/{\ell}$.

• 대한두개안면성형외과학회지
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• 제20권3호
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• pp.164-169
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• 2019

Background: The conventional surgical method for reconstructing orbital floor fractures involves restoration of orbital continuity by covering an onlay with a thin material under the periorbital region. However, in large orbital floor fractures, the implant after inserting is often dislocated, leading to malposition. This study aimed to propose a novel implanting method and compare it with existing methods. Methods: Among patients who underwent surgery for large orbital floor fractures, 24 who underwent the conventional onlay implanting method were compared with 21 who underwent the novel ${\gamma}$ implanting method that two implant sheets were stacked and bent to resemble the shape of the Greek alphabet ${\gamma}$. When inserting a ${\gamma}$-shaped implant, the posterior ledge of the orbital floor was placed between the two sheets and the bottom sheet was impacted onto the posterior wall of the maxilla to play a fixative role while the top sheet was placed above the residual orbital floor to support orbital contents. Wilcoxon signed-rank test and Mann-Whitney U test were used for data analyses. Results: Compared to the conventional onlay method, the gamma method resulted in better restoration of orbital contents, better improvement of enophthalmos, and fewer revision surgeries. Conclusion: Achieving good surgical outcomes for extended orbital floor fractures is known to be difficult. However, better surgical outcomes could be obtained by using the novel implantation method of impacting a ${\gamma}$-shaped porous polyethylene posteriorly.

• 한국공간구조학회논문집
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• 제17권2호
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• pp.33-41
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• 2017

Composite Floor system infilled with PCM(Phase Change Material) between upper and lower steel plates was developed to apply the steel frame. When steel frames were applied this system, it can absolutely reduce the duration of construction due to dry construction method. However to apply this system as a structural floor member without fire resistance covering, it must have 2 hours fire resistance performance. Because PCM consisted of three quarters of section with thermal insulation performance, fire resistance performance of this floor system was expected to easily have 2 hours fire resistance performance. This paper was to investigate behavior characteristics of PCM infilled floor system at elevated temperature using FEM analysis to develop the fire resistance performance of it.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2004년도 추계학술대회논문집
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• pp.261-264
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• 2004

Impact sounds, such as those created by footsteps, the dropping of an object or the moving of furniture, can be a source of great annoyance in residential buildings. The character and level of impact noise generated depends on the object striking the floor, on the basic structure of the floor, and on the floor covering. This study base on the evaluate of isolation performance of impact sound according to the installation of ceiling and wall. In this test, we measured the reduction of impact sound in the case of inserting absorption materials, increasing of the thickness of air layer and using anti-vibration rubber in ceiling, install of absorption materials in wall. The results of this study show that treatment of ceiling and wall have some reduction of the light weight impact sound and heavy weight impact sound.

• 대한산업공학회지
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• 제22권3호
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• pp.337-349
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• 1996

A study was conducted to find the possible relationship between slip distance and dynamic coefficient of friction (DCOF) through the biomechanical study of slips and falls using a broader variety of floors and levels of slipperiness than those used before. Four different floor surfaces covering the full range of floor slipperiness (with and without on oil contaminant) were prepared for ten subjects with each walking at a fixed velocity. The results showed that slip distance and heel velocity had a decreasing trend while stride length had a increasing trend as DCOF increased. The contaminant effect overpowered floor slipperiness effect because a higher DCOF surface with oil contaminant created longer slip distance than the lower DCOF with dry floor. Normal gait pattern and suggested heel velocity (10 to 20 cm/sec) were seen on dry floors but abnormally longer stride length and 5 to 10 times faster heel velocity were found an oily floors. In other words, faster heel velocity (greater than 10 to 20 cm/sec) is recommended to measure DCOF on oily floors because the assumption of normal gait was no longer valid.

• 한국해양공학회지
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• 제31권2호
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• pp.141-154
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• 2017

A production management system is developed to enhance both the information and productivity of ship and offshore plant deckhouse floor outfitting. The functions of the production management system for the deckhouse floor outfitting were reviewed based on a literature survey of several production management systems with respect to the ship building and architecture fields. This study investigated numerous daily production reports and their application to actual work places to utilize the system development. The developed scanned drawing-based production management (SDPM) system minimizes any loss and/or distortion of work information between the workshop and management office when applying a scanned production drawing to the daily report. The SDPM system increases the data objectivity, as well as intuitiveness of the information generation by adopting an efficient user interface, which makes it possible to perform image annotations on the scanned drawing for the daily production report while simultaneously interacting with the production management database. Applying the system operation to actual deckhouse floor covering work verified that it was feasible to use the SDPM system for production management in the ship outfitting work process.

• 지적과 국토정보
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• 제48권2호
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• pp.121-135
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• 2018

국토교통부는 지난 2012년 "국토의 계획 및 이용에 관한 법률"을 개정하였으며, 이를 통해 둘 이상의 용도지역에 걸치는 대지에 대한 용적률 적용기준이 변경되었다. 본 연구는 "국토의 계획 및 이용에 관한 법률" 개정에 따른 용적률 적용기준 변경의 정책적 효과 분석에 대한 연구를 진행하였다. 둘 이상의 용도지역 등에 걸치는 대지라 함은 일반적으로 이해하고 있는 노선상업 또는 노선준주거 지역이다. 본 연구는 노선상업 또는 노선준주거 지역이 상대적으로 많이 입지해있는 서울의 강남구를 대상으로 정책효과를 검증하였다. 이를 위해 2007년부터 2017년까지 강남구에서 거래된 오피스 사례 468건이 분석에 이용되었다. 정책변경에 따른 효과를 검증한 결과 정책변경에 따른 용적률 인센티브를 받은 오피스는 그렇지 않은 오피스에 비해 19.08%의 평당 매매가격 상승이 있는 것으로 나타나 법개정에 따른 경제적 효과가 상당히 컸음을 알 수 있다. 또한 기존 정책이 둘 이상의 용도지역 등에 걸치는 대지의 소유자들의 토지이용에 대한 제약으로 작용했고 이는 곧 해당 자산이 갖고 있는 본연의 가치를 절하요인으로 작용했다고 볼 수 있다. 따라서 본 연구 결과는 정책변경이 둘 이상의 용도지역에 걸쳐있는 토지의 합리적 이용을 이끌어내 해당 자산 본연의 가치를 평가받고 있다는 실증적 근거를 제시했다는데 기여를 했다고 볼 수 있다.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2003년도 춘계학술발표대회 논문집
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• pp.65-68
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• 2003

The purpose of this study is examine the color planning in the different type of classroom to establish interior color planning. This study also uses environmental planning and practical use of basic data for color planning to future school facilities. The summary of this study is as followed. The primary school and middle school classrooms as well as the open space classrooms floor color recommended of brown and the primary school wall color is light yellow, middle school wall color is light yellow and brown. The high school classroom color is recommended brown and wall color to light yellow and green system. The recommended floor color of primary school which includes in computer room and language study room, library of the multi-purpose of media room recommended are gray, brown and pink. The recommended wall color in primary school is light gray. The middle school floor color propose gray and light brown and wall recommended color is light brown, gray, ivory with the high school the computer room, language study room and library. The floor color is recommended gray, green and the wall propose blue. Moreover, recognize that importance of color effectiveness in school interior facilities considering with Interior covering material in class room.