A Study on Factors Related to Residential Satisfaction in Different Income Brackets

Park,Nae-Sik,Chung,Cheol-Mo 한국주거환경학회 2018 주거환경(한국주거환경학회논문집) Vol.16 No.3

Ⅰ. Introduction Ⅱ. Theoretical Study Ⅲ. Frame of analysis Ⅳ. Analysis of the factors affecting residential satisfaction according to the income bracket Ⅴ. Conclusion 본 연구는 소득계층에 따라 주거만족도에 영향을 미치는 요인이 무엇인지를 파악하기 위하여 「2016년 주거 실태조사」를 활용하여 회귀분석으로 주거만족도 영향 요인을 분석하였다. 분석결과 첫째, 주거만족도에 물리적 요인과 입지적요인, 사회․환경적요인은 양(+)의 영향을 미치는 것으로 나타났다. 둘째, 주거만족도에 주택면적이 양(+)의 영향을 미치는 것으로 나타났다. 이는 주택면적이 클수록 주거만족도가 높게 나타났다. 셋째, 주거만족 도에 주택유형더미가 영향을 미치는 것으로 나타났다. 전체가구에서는 양(+)의 영향을 미치는 것으로 나타났으 나, 저소득층과 고소득층에서는 음(-)의 영향을 주는 것으로 나타났다. 넷째, 주거만족도에 지역더미가 양(+)의 영향을 미치는 것으로 나타났다. 이는 수도권에 거주하는 가구가 주거만족도가 높게 나타나는 것으로 나타났다.

大氣浮遊粉塵中 여러고리 芳香族 化合物에 관한 硏究

朴來正 弘益大學校 1988 弘大論叢 Vol.20 No.2

Polycyclic aromatic hydrocarbons(PAH)/polycyclic aromatic sulfur heterocycles (PASH) and nitrogen containing polycyclic aromatic compounds(NPAC) were investigated in air-borne particulates of Seoul metropolitan area. The samples were fractionated by alumina column chromatography and cleaned by gel filtration using Biobead. These fractions were chromatographed in a fused silica capillary column coated with SE-54(25m×0.03mmi.d.). Nineteen compounds of PAH/PASH and 8 compounds of NPAC were identified according to retention index system, and 10 compounds were further confirmed by GC/MS data. The concentrations were relatively lower compared with previously reported data. It was considered due to photodegradation during long period of sample collection by means of deposit gauge.

活性汚泥 및 塵芥堆肥中 水溶性 鐵킬레이트의 分離와 特性에 關한 硏究

朴來正,프랑크 알 스터미츠,윌라드 엘 린지 弘益大學校 1974 弘大論叢 Vol.6 No.-

이 硏究는 都市有機廢物을 利用한 有機質肥料로서 活性汚泥 및 塵芥堆肥를 킬레이트화 物質로서의 利用價値를 評價하기 爲하여 수행되었다. 鐵킬레이트화에 관여하는 水溶性物質을 分子체 分劃法으로 分離하여 紫外線 및 赤外線分光分析法으로 그 構造를 조사하였고 Fe 등과의 安定度常數를 이온交換平衡法으로 測定하여 이들을 킬레이트물질로 使用하였을 때 그 安定性을 調査하였다. 塵芥堆肥에서 抽出된 有機物質은 Sephadex G-25에 依해 4個分劃으로 分離되었고 이중 鐵과 킬레이트를 이루고 있던 分劃은 分子量이 5,000~10,000 사이에 있었고 polyphenol 構造의 酸素群이 킬레이트화에 關與하고 있었다. 活性汚泥 抽出物은 Sephadex G-25에 依해 6個의 分劃으로 分離되었고 이중 킬레이트를 이루고 있던 分劃은 5,000~10,000 또는 5,000에 약간 未達하는 分子量을 가지고 있고 polypeptide 構造의 amide기가 킬레이트화에 關與했다. 이들의 安定度常數도 合成킬레이트 물질의 安定度와 크게 差異가 없을 程度로 安定하였다. This study was conducted to study the properties of the water-soluble natural chelating agents from garbage compost and activated sewage sludge responsible for Fe chelation, which is closely asso챠ated with the effectiveness in correcting iron chlorosis in plant. The water-soluble fractions of Fe chelates were traced by radioactive Fe. The fractions were examined by ultraviolet and infrared. spectoscopy and stability canstants for Fe. The water-soluble fraction from garbage compost was separated by Sephadex G-25 into approximately four fractions. Most of the added Fe was associated with fraction I, which appeared at the void volume. Further fractionation by Sephadex G-50 indicated that the molecular weight of water-soluble chelating agents is in the approximate range of 5000 to 10,000. The water-soluble fraction from activated sewage sludge gave six fractions by Sephadex G-25. Most of the added Fe was found in the fraction Ⅰ, Ⅱ, and Ⅲ. The molecular weights of most chelating agents associated with Fe appeared to be less than 5,000 and those of fraction I that appeared at the void volume was in th range of 5,000 to 10,000. Discrepancy between radio activity count and UV absorption indicated the heterogeneity of the fractions obtained by Sephadex gel filtration. Ultraviolet absorption spectra of all fractions separated by Sephadex G-25 and containing chelating agents showed no differences. Fraction Ⅳ and Ⅴ of sewage extract showed absorption maxima and shifting similar to nucleic acid components suggesting the presence of decomposition products of nucleic acid. Similarily fraction Ⅵ contained phenolic type amino acid groups. Fraction Ⅰ of compost extract contained most of the added Fe and showed weak but extra definite absorption in the 1230, and 1270㎝ region, suggesting that extra oxygen groups in polyphenolic structure were probably involved in Fe chelation. In sewage extract, fraction Ⅰ, Ⅱ, and Ⅲ in which most of the Fe was found, showed strong definite polypeptide absorption in the region of 1540㎝ due to NH deformation and C-N stretching of amide groups in the peptide bond. These extra functional groups in fraction Ⅰ, Ⅱ, and Ⅲ appeared to be associated with Fe cheltion. The other fractions, not associated with Fe, still have carboxyl and hydroxyl groups, suggesting that these functional groups in thess water extracts may not independently form the Fe chelates. Precipitation of ferric hydroxide precluded measuring the stability constants for Fe chelates. However, the formation constraints for Zn chelates as log K values for compost extract and sewage extract at pH 4.0, from which the strength of chelation with Fe could be presumed, were 8.23, and 9.75, respectively, indicating strong complexation with metals. The chelating capacity of compost of extract containing 6.5g organic matter per liter was 0.82 mM, and that of sewage extract containing 5.3g per liter was 0.64 mM.

流動層上에서木屑의 熱分解에 官한 硏究

朴來正,姜元萬 弘益大學校 1981 弘大論叢 Vol.13 No.-

Sawdust from timber mills, as one of the solid organic wastes, was pyrolyzed in a fluidized bed. Satisfactory fluidization was achieved with a 3 cm layer of -7 +14 mesh silica on 150 mesh brass screen as a distributer. Screen packing did not prevent the slugging phenomena but rather made the fluidity worse. The minimum fluidization velocity(Umf) of the sawdust was lowered as carbonization proceeded. Accordingly, the input rate of nitrogen gas was controlled considering the lowering of Umf along with the gas expansion due to heating under the fluidization conditions. Sawdust was pyrolyzed at 400℃, 600℃, and 800℃, respectively, and condensible pyrolytic products were collected in various cooling traps; air cooling, ice water cooling, and dry ice-acetone cooling. On the average, 36.7% of tar products, 26.3% of carbonized residue, 1.8% of volatile liquid, and 35.5% of non-condensible gases were produced. The higher the pyrolytic temperature, the less carbonized residue and tar products were produced. Ⅰ. 緖 論 Ⅱ. 實驗材料 및 方法 1. 材 料 2. 熱分解 裝置 3. 捕集裝置 4. 熱分解操作 및 條件 Ⅲ. 實驗結果 및 考察 1. 流動層操作의 裝置 및 條件의 設定 2. 熱分解 生成物의 捕集量 Ⅳ. 結 論

오차항 분산이 독립변수의 함수일 때 캘리브레이션

박래현 충남대학교 기초과학연구소 1995 忠南科學硏究誌 Vol.22 No.2

This paper suggests an interval estimation procedure in the simple calibration model when the error variances are a function of independent variables. The conditions under which one can obtain a closed confidence interval are also studied here.

室素氣流下에서의 셀룰로오즈의 熱分解에 關한 硏究

朴來正 弘益大學校 1976 弘大論叢 Vol.8 No.-

When pure cellulose was pyrolyzed at 300℃ under nitrogen current for 2.5hrs, with collection traps of air cooling, water cooling, and dry ice-acetone bath cooling, 12.3% of tar, 0.01% of water-soluble liquid and 0.25% of light oil were collected and 46.9% of carbonized residue was left in the reactor. Also 41.7% of total sample was volatilized into gas. The components of water-cooled and dry ice-acetone bath cooled traps were separated by gas chromatograph with Porapak Q column. The condensate in water-cooled trap was separated into ten peaks in the chromatogram under temperature programming, 120-120℃, 2℃/min. According to the retention time compared with standard alchohols, aldehydes, ketones, and organic acids, methanol, formaldehyde,acetone, acetaldelyde, and acetic acids were primarily identified in both materials.

카리스마적 리더십에 관한 연구

박종태,최영곤,한남익,박철용,표내숙,조춘호 釜山大學校 附設 體育科學硏究所 1998 體育科學硏究所 論文集 Vol.14 No.-

In the early decades of this century, Charisma which originally means endowment with the gift of grace, has been introduced to social sciences by German sociologist, Max Weber. It quickly became interested in the field of sociology and politics. But, into the 1970s, charismatic leadership still had not became a subject for empirical or experimental research related to organizational theory. Recently, much attention has been paid to charismatic leadership as the prototype of leadership that people have in mind when they describe their ideal leader and is more likely to provide a role model with which subordinates want to identify. As a result, in will perform further study related to Charisma leadership which developing various kind of measurement and instrument. Finally, it should identify lost of possibility and phenomenon through the study of charisma leadership.

아닐린의 산화적 카르보닐화에 의한 에틸페닐카바메이트의 합성

朴來正,金明雄 弘益大學校 科學技術硏究所 1992 科學技術硏究論文集 Vol.2 No.-

Ethylphenyl carbarmate(EPC) was synthesized by oxidative CO carbonylation of aniline in the presence of transition metal catalysts and alkari metal halide cocatalysts at 120℃ under the pressure of 79 atm. Oxygen gas was used for oxidizing agent. About 100% conversion to EPC and 93% selectivity was obtained in 5 hour reaction under this conditions. Increase in pressure and temperature increased conversion. 0.02% of 5% Pd/C was the most effective. Effectiveness of cocatalysts was in the order of KI>KBr>KCI as anion effects. As cation effect CsI and KI were about the same but NaI was a little lower. Iodine itself gave catalytic effect but produced more byproducts of Nethylbenzamine and N, N'-diphenylurea. No dehydration effect of zeolite and triethylorthoformate was not recognized,but decreased the reactor pressure significantly. As the temperature increased, the conversion rate increased. The reaction was apparent first order and activation energy was 5.647kcal/mol.

매우 빠른 운동에서의 시간 가변성과 힘가변성에 관한 연구

박종태,표내숙,문규진 釜山大學校 附設 體育科學硏究所 1996 體育科學硏究所 論文集 Vol.12 No.-

The present study achieved the following conclusion by analyzing of theoretical timing variability and fore variability which are controled in very rapid movement. 1. As common as the speed-accuracy trade-off phenomenon seems to be for movement behavior where spatial accuracy is major goal. 2. The primary determinant of timing accuracy is movement time, with longer movement time generating more timing error. 3. It is produced a kind of inverted-U effect that very rapid and very slow movement having the most spatial accuracy and the moderate - speed movement having the least spatial accuracy. 4. The future research require experimental study on the more complicated action because these are very simple skill.

信用重視見解에 대한 一檢證 : 落後地域 銀行貸出資料를 利用한 경우

朴壬求,崔乃仁 全北大學校 1997 論文集 Vol.43 No.-

The primary purpose of this paper is to test empirically the "Credit View" using the commercial bank loan data of Chollabuk-do province, one of the most backward regions in Korea. The previous study employing the national level bank loan data of Korea did not work out very well in supporting the view. Our guess is, however, that a test using the local bank loan data would more significantly support the "Credit View" because the depressed regions usually suffer from the most severe asymmetric information problems(i.e.,adverse selection and moral hazard) in the financial sector. We empolyed VAR(vector autoregressions) methodology and found significantly higher elasticities than those obtained previously from the national level bank loan data and thus strongly supports the "Credit view." The evidence also implies that the effect of money supply is more amplified in the backward region than in the developed region through the credit channel.