고정층 마이크로 반응기에서의 폐목재 열화학적 전환 특성

이인구,이재구,김재호,이시훈,Lee In-Gu,Lee Jae-Goo,Kim Jae-Ho,Lee See-Hoon 한국자원리싸이클링학회 2006 資源 리싸이클링 Vol.15 No.1

고정층 마이크로반응기를 이용하여 폐목재의 열화학적 전환에 영향을 미치는 운전 조건들-반응온도, 승온속도, 입도, 수분함량의 영향을 조사하였다. 사용한 시료는 소나무, 참나무, 아카시아, 은행나무의 폐목재칩을 사용하였다. 실험에 사용한 시료의 평균 수분 함량은 $35wt\%$이었으며 다른 바이오매스와 마찬가지로 회분함량은 $0.5wt\%$ 이하로 나타났다. 시료들의 평균 발열량은 4,550kca1/kg이었다. 열화학적 전환에 따라 발생된 생성물분포는 시료종류, 수분함량, 입도와 같이 시료의 물성에 따라 다소 달랐으며 평균적으로 액상 $40wt\%$, 고상 $20wt\%$,그리고 기상 $40wt\%$를 보였다. 생성가스의 조성은 거의 모든 실험변수에 영향을 받았으며, 평균적으로 수소 $40wt\%$, 일산화탄소 $30wt\%$이었으며 메탄은 $10wt\%$ 정도이었다. The effects of operation conditions, such as bed temperature, temperature rising rate, particle size, moisture content and so on, on thermo-chemical conversion of waste wood have been determined in a micro fixed bed gasifier. The samples were waste wood-chips such as pine, oak, acacia and ginkgo. The thinning timbers used as reactants in the experiments had $35wt\%$ moisture content, $0.5wt\%$ ash content and 4,550 kcal/kg heating value on a dry basis. A typical product distribution was a $40wt\%$ liquid, $20wt\%$ solid, and $40wt\%$ dry syngas. The syngas concentration was affected by operation conditions and average syngas concentration was $H_2:40vol\%,\;CO:30vol\%,\;CH_4:10vol\%$.

아두이노 기반의 독거노인을 위한 스마트홈 시스템

이인구,조면균,Lee, In-Gu,Cho, Myeon-Gyun 대한임베디드공학회 2015 대한임베디드공학회논문지 Vol.10 No.5

Recently, Smart Home System(SHS) is applied in order to provide comfort, energy efficient and better security to the residence. Thus, by introducing the SHS in the house of elderly people, it is possible to provide a convenient and safe life for old people especially living alone. This paper presents the design and implementation of a low cost but yet flexible and secure smart-phone based SHS. The design is based on inter-working between Arduino board with Bluetooth and Arduino board with Ethernet shield, and the home monitor/appliances are connected to the input/output ports of this board via sensors/relays. In addition, when the old man is put on an emergency, the proposed system will automatically notify it the family. Therefore, we have implemented an inexpensive and efficient SHS for the elderly living alone by inter-working smart phones, internet server and Arduino micro-controller.

티타늄 임플랜트의 두 가지 표면처리방식에 대한 골반응 - 양극 산화표면, IBAD HA 코팅 표면

이인구,서규원,최준언,정성민,류재준,Lee, In-Ku,Suh, Kyu-Won,Choi, Joon-Eon,Jung, Sung-Min,Ryu, Jae-Jun 대한치과보철학회 2007 대한치과보철학회지 Vol.45 No.1

Statement of the problem: In case of poor bone quality or immediately loaded implant, various strategies have been developed focusing on the surface of materials to improve direct implant fixation to the bone. The microscopic properties of implant surfaces play a major role in the osseous healing of dental implant. Purpose of study: This study was undertaken to evaluate bone response of ion beam-assisted deposition(IBAD) of hydroxyapatite(HA) on the anodized surface of subperiosteal titanium implants. Material and methods: Two half doughnut shape subperiosteal titanium implants were made. The control group was treated with Anodized surface treatment and the test group was treated with IBAD of HA on control surface. Then two implants inserted together into the subperiosteum of the skull of 30 rats and histological response around implant was observed under LM(light microscope) and TEM(transmission electron microscope) on 4th, 6th and 8th week. Results: Many subperiosteal implants were fixed with fibrous connective tissue not with bony tissue because of weak primary stability. The control group observed poor bone response and there was no significant change at any observation time. However the test group showed advanced bone formation and showed direct bone to implant contact under LM on 8th week. The test group observed much rER in the cell of osteoblast but the control group showed little rER under TEM. Conclusions: The test group showed better bone formation than the control group at the condition of weak primary stability. With these results IBAD surface treatment method on Anodized surface, may be good effect at the condition of weak primary stability.

수생식물을 이용한 중금속 제거에 관한 연구

이인구(Lee In-Koo),이상호(Lee Sang-Ho),이상을(Lee Sang-Eul),신방웅(Shin Bang-Woong) 한국지반환경공학회 2000 한국지반환경공학회 학술발표회논문집 Vol.2000 No.-

통제유형이 적응적 판매행동과 영업성과에 미치는 영향

이인구 ( Ihn Goo Lee ),지성구 ( Seong Goo Ji ) 한국유통경영학회(구 한국유통정보학회) 2014 유통정보학회지 Vol.17 No.3

영업사원의 영업행동은 영업사원의 개인성과뿐만 아니라 조직성과에도 영향을 준다. 본 연구에서는 전통적인 통제이론에 근거한 행위통제 및 결과통제가 영업사원들의 적응적 판매 행동과 영업성과에 어떠한 영향을 주는지를 실증하였다.본 연구의 분석대상은 서비스, 도소매업, 제조업에서 판매를 담당하고 있는 영업사원들이고, 300개의 자료를 이용하여 AMOS분석을 실시하였다. 연구 결과, 본 연구에서 제시된 통제유형인 행위통제 및 결과통제 모두 영업사원의 적응적 판매행동에 유의미한 영향을 주는 것으로 나타났다. 특히, 결과통제보다 행위통제가 적응적 판매 행동에 더욱 많은 영향을 미치는 것으로 나타났다. 그리고 적응적 판매행동이 개인의 영업성과에 긍정적인 영향을 주는 것으로 확인되었는데, 이는 기존의 연구결과들과 일치하는 것이다. 이러한 연구결과를 바탕으로 본 연구가 가지고 있는 이론 및 실무적 시사점을 도출하여 제시하였다. Salespeople` selling behavior has an impact on both individual performance and organizational performance. In this study, the authors had an empirical test of behavior and output control`s effects on salespeople`s selling behavior and performance based a traditional control theory. Sampling frame of this study are salespeople in the field of service, retailing, and manufactures. With 300 panel data set, the authors implemented AMOS analysis. As results, this research showed that the relationships between all types of control tool and salespeople`s adaptive selling behavior were very significant. Especially, behavior control had a more effect on adaptive selling behavior than output control. And it is confirmed that adaptive selling behavior had a positive effective on individual performance. These findings are congruent with established research results. Based on these findings, the authors induced theoretical and practical implications.

고압 방전필터/촉매에 의한 디젤 엔진 배기가스 저감 특성 평가

이인구(Ingu Lee),표종민(Jong Min Pyo),김수은(Sueun Kim),신귀수(Kwisu Shin),김근주(Keonjoo Kim) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_1

The three-way catalyst diesel particulate filter for the purification of diesel exhaust gas was manufactured by the implementation of the high voltage discharging filter and three-way catalyst system. The high-voltage discharging filter was designed with the several pairs of the positive plate and the negative plate. The electric power 3.6 W with the voltage of 12 V and the current of 300 ㎃ was applied and the voltage was transformed to 5 ㎸. The three-way catalyst system was designed with DOC and De-NOx catalyst filter. The experimental measurement of the reduction of exhaust gas was performed by the implement of the truck named, "Carnival", a product of KIA Motor Co. at the engine speed of 2000 rpm. The exhaust gas was reduced by up to 30%.

목질계 바이오매스의 급속 열분해 실험연구

이인구(In-Gu Lee) 한국에너지학회 2009 한국에너지공학회 학술발표회 Vol.2009 No.-

간질환아에서 항경련제 투여가 혈청 갑상선 호르몬값에 미치는 영향

이인구(In-Goo Lee),황경태(Kyung-Tai Whang) 대한소아신경학회 1994 대한소아신경학회지 Vol.2 No.1

저자들은 장기간 항경련제 투약을 받고 있는 간질 환아에서 혈청 갑상선 호르몬값(thyroxine; T, free thyroxine; FT, triiodothyronine; T 및 thyrotrophin;TSH)의 변화를 알아보고저, 항경련제 치료군(valproic acid(VPA) 투여군, carbamazepine(CBZ) 투여군, diphenylh-ydantion(DPH 투여군. phenobarbital(PB) 투여군 및 combination (COM, 병용) 투여군)의 환아 89명과 대조군의 소아 40명에서 혈청 T, FT, T 및 TSH값을 각각 방사면역측정법으로 정량 측정하였으며, 다음과 같은 결과를 얻었다. 1. 혈청 T, FT 및 T평균값은 대조군의 것과 각각 비교하여 CBZ 투여군과 병용투여군에서, 그리고 혈청 T 및 FT값은 DPH 투여군에서 각각 유의한 저하가 있었고, 이중 혈청 FT의 평균값은 항경련제 치료군 모두에서 공통적으로 유의한 저하를 보였다(P<0.01). 2. 혈청 갑상선 호르몬 가운데 한 개 또는 그 이상이 대조군의 평균에서 2배의 표준편차 이하로 저하된 낮은 값을 보인 환아는 총 79명중 43명(54.4%)에서 있었다. 이중, 혈청 FT의 낮은 값은 가장 많아 79명 중 37명(46.8%)에서 있었고, 항경련제별로 보면 CBZ 투여군에서 가장 많아 16명중 13명(81.3%)에서 있었다. 3. 혈청 TSH값이 대조군의 평균에서 2배의 표준편차 이상으로 증가된 높은 값을 보인 환아는 총 79명중 1명(1.3%)에서 있었다. 이 환아는 또한 혈청 FT값의 저하를 동반하고 있었으며 추적 조사해 본 결과 갑상선 기능 저하증의 임상 소견은 인지되지 않았다. 이상의 결과로 보아 간질 환아에서 혈청 호르몬값에 대한 항경련제의 영향은 주로 CBZ 및 DPH의 단독투여와 관련이 깊었으며, 이는 약물을 병용 투여시 더욱 현저하였음을 알 수 있었다. 또한, 갑상선 호르몬 가운데 혈청 FT값의 측정은 항경련제 투여와 관련된 갑상선 기능의 이상을 찾아내는데 가장 예민한 방법임을 제시할 수 있었다. The present study was undertaken in order to investigate the effects of the commonly used anticonvulsant drugs on the thyroid hormones in epileptic children. authors examined 79 patients(male 50, female 29)) of five anticonvulsant-treated groups sho received valproic acid(VPA.n=26).carbamazepine(CBZ.n=16). diphenylhydantoin(DPH.n=13) and phenobarbital(PB. n=9) respectively, or a combination of these(COM.n=15) for the periods varying from 4 months to 6 years, and a control group of 40 children(male 30. female 10). The average age of the patients was 10.75±1.19 years and that of the controls 10.88±2.36 years. None of the controls received drugs with known effect on thyroid or pituitary function, and all subjects were clinically euthyroid. All sera from patients and conrols were obtained immediately from blood samples and stored at -20℃ until they were assayed at the same time. In all 119 children, the serum levels of thyroxine(T), free thyroxine(FT), triiodothyronine(T), and thyrotrophin(TSH) were measured by a radioimmunoassay. The comparison of the control and anticonvulsant-treated groups was conducted by means of analysis of variance. In the case of statistically significant differences, the Dunnet multiple comparison tests were performed to check which group is statistically different from the control group. The results were summarized as follows: 1. The mean serum levels of T. FT and T were significantly decreased in the groups treated with CBZ and COM, as compaired with those of the control, and those of T and FT were also significantly decreased in the group treated with DPH. 2. Forty-three of 79 patients who treated with various anticonvulsant drugs had low serum thyroid hromonal levels below 2 SD from the mean of control group. Of the 79 patients 37(46.8%) had low serum level of Ft. and abnormally low FT was most common in the group treated with CBZ and it was observed in 13 of 16 patients(81.3%). 3. One of the 79 patients had high serum TSH level above 2 SD from the mean of control group, and the patient was clinically euthyroid during the study. Our study revealed that the decreasing effects on serum levels of thyroid hormones by anticonvulsant drugs were mainly related to the treatment of CBZ, DPH and COM. Also, we demonstrated that estimation of the serum level of FT was a suitable test for the initial laboratory work-up to detect thyroid hormonal abnormality in epileptic children taking various anticonvulsant drugs.

중국 위안화의 적정 환율변동폭 추정에 관한 연구

이인구 ( In Koo Lee ),조현준 ( Hyun Jun Cho ) 한중사회과학학회 2008 한중사회과학연구 Vol.6 No.1

The Chines yuan(RMB) has steadily appreciated since its exchange rate system reform on July 21, 2005. The yuan`s flexibility of exchange rate has been limitedly allowed under the currency basket peg system. However, China is now in a situation which necessitates greater exchange rate flexibility. Externally, China is under pressure from advanced countries to appreciate the yuan substantially to reduce global trade imbalances. Internally, China faces more severe problems, in which its currency policy has become less effective as the large increase in forex reserves has been only partially sterilized and has added to already substantial liquidity in the banking system. China is hardly expected to give a drastic one-time realignment to the yuan`s exchange rate. Beijing would rather be likely to gradually widen the yuan`s trading band (currently set at±0.5 percent a day) against the dollar. This paper, using a non-linear threshold autoregressive model (TAR), estimates the yuan`s optimal trading band. The results show the optimum lies within the bandwidth of±3.1~±3.9 percent. This indicates that China will probably to widen the yuan`s daily trading band incrementally to a level which would be several times bigger than the current one, so as to curtail the heavy pressure for the yuan`s appreciation and to enhance the currency policy effectiveness.

웰빙 소비자의 가치, 소비가치, 관계품질과 고객애호도의 관계

이인구(Lee, Ihn Goo),지성구(Ji, Seong Goo) 한국상품학회 2010 商品學硏究 Vol.28 No.4

최근 웰빙이 새로운 소비 트렌드로 자리잡아가고 있고, 이러한 트렌드에 시의성 있는 대응으로 웰빙 마케팅에 대한 학문적 연구가 본격적으로 이루어지기 시작하였다. 본 연구의 목적은 웰빙 마케팅의 주요 개념인 웰빙 소비자 가치가 소비가치를 매개로 하여 관계 마케팅의 핵심 변수인 ‘신뢰-만족-애호도’에 어떠한 영향을 미치는지를 파악하려는 것이다. 즉 본 연구는 웰빙 마케팅과 관계마케팅의 통합적 관점에서의 연구를 지향하고 있는 것이다. 연구 결과를 살펴보면, 웰빙 소비자 가치는 웰빙 상품의 소비가치에 유의하게 영향을 미치고, 웰빙 상품 소비가치는 관계품질인 신뢰와 만족에 긍정적인 영향을 주는 것으로 밝혀졌다. 그리고 웰빙 상품의 신뢰는 만족에 긍정적인 영향을 주고, 만족은 애호도에 긍정적인 영향을 주는 것으로 실증되었으나, 신뢰는 만족을 매개하여 애호도에 영향을 주는 것으로 나타났다. 이러한 연구결과를 바탕으로, 시사점을 제시하였고, 연구의 한계와 미래 연구의 방향을 제시하였다. In recent years, the well-being concept has been new and main trends of consumption. A few studies are starting to make a research on these issues. The purpose of this study is focusing on well-being consumption values which are major constructs of well-being marketing. And then, how do they causally affect 'trust-satisfaction-loyalty' with mediating variables of consumption value? This question was resolved by this study. In other words, we integrated the framework of well-being marketing and relationshipmarketing. Results are as follows; Antecedent of this research model are well-being consumption values(mental value, healthy value, eco-friendly value). Two of them(mental value, eco-friendly value) have significantly positive effect on consumption value of well-being product, but mental value is not significant. In terms of consumption value of well-being product(individual value, product value, social value), all variables are significant on trust, but the only variable which is significant on satis faction is product value. Finally, we empirically tested the relationship between trust and satisfaction, satisfaction and loyalty. Those relationships are significant.