• The Korean Journal of Pain
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• 제32권1호
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• pp.30-38
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• 2019

Background: The adductor canal block (ACB) is an effective intervention for postoperative analgesia following total knee arthroplasty (TKA). However, the ideal ACB regimen has not yet been established. We compared the analgesic effects between a continuous ACB group and fentanyl-based intravenous patient-controlled analgesia (IV-PCA) with a single-shot ACB group. Methods: Patients who underwent TKA were randomly allocated to either a continuous ACB group (Group CACB) or IV-PCA with a single-shot ACB group (Group IVACB). Before the surgery, ultrasound guided ACB with 0.5% ropivacaine 20 cc was provided to all patients. Before skin incision, the infusion system (0.2% ropivacaine through an adductor canal catheter in group CACB vs. intravenous fentanyl in group IVACB) was connected. The postoperative pain severity; the side effects of local anesthetics and opioids; administration of rescue analgesics and anti-emetics; and sensorimotor deficits were measured. Results: Postoperative pain severity was significantly higher in the IVACB group at 30 min, 4 h, 24 h, and 48 h after surgery. The averages and standard deviations (SD) of the NRS score of postoperative pain were $0.14{\pm}0.37$, $4.57{\pm}2.37$, $6.00{\pm}1.63$, and $4.28{\pm}1.49$, respectively in the IVACB group. Rescue analgesic requirements and quadriceps muscle strength were not statistically different between the groups throughout the postoperative period. Moreover, rescue antiemetic requirements were higher in group IVACB than group CACB. Conclusions: In this study, the continuous ACB provided superior analgesia and fewer side effects without any significant motor deficit than the IV-PCA with a single-shot ACB.

• 한국산학기술학회논문지
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• 제16권3호
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• pp.1699-1706
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• 2015

본 연구의 목적은 주택재건축 사업의 사업시행단계에서 나타나는 갈등에 대한 대응, 처리, 관리에 관한 지표를 도출하여 관련주체를 대상으로 적합하고 합리적으로 재건축 사업의 갈등을 해결하는 것이 목적이며, 이러한 평가를 통해 사업만족도와 지속적 사업의사에 어떠한 영향구조를 가지는지 분석하고자 진행하였다. 이를 위해 변수 간의 관계를 검증하기 위해 조작적 가설을 설정하고, Smart PLS 3.0 통계 패키지를 이용하여 구조모형을 작성하였다. 총 252개의 셈플을 이용하여 영향구조를 분석한 결과, 가설에서 설정한 데로 (+)의 경로계수로 도출되면서 t 통계량도 1.65 이상으로 유의하게 나타나는 가설을 최종 가설로 채택하였다. 그 결과 채택된 가설은 총 9개 중 6개로 '갈등대응이 갈등관리(H1)'에 미치는 경로계수가 0.618, '갈등처리가 갈등관리(H2)'에 미치는 경로계수가 0.150으로 나타났다. '갈등처리는 사업만족도(H5)'에 0.101의 경로계수 값을 나타냈으며, '갈등관리는 사업만족도(H7)'에 0.644의 경로계수 값이 도출되었다. 또한 '지속적 사업의사(H8)'에도 0.258의 경로계수를 나타냈다. 마지막으로 '사업만족도는 지속적 사업의사(H9)'에 0.391의 경로계수를 나타내는 것으로 도출되었다.

• 한국콘텐츠학회논문지
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• 제15권4호
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• pp.500-509
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• 2015

본 연구의 목적은 재건축사업의 사업시행단계에서 나타나는 갈등에 대한 조정에 관한 지표를 도출하여 관련주체를 대상으로 적합한 체계를 통해 재건축 사업의 갈등을 해결을 평가하는 것이 목적이며, 이러한 평가를 통해 사업만족도와 지속적 사업의사에 어떠한 영향구조를 가지는지 분석하고자 진행하였다. 이를 위해 조작적 가설을 설정하고, Smart PLS 3.0 을 이용한 구조모형을 작성하였다. 그 결과 (+)의 경로계수로 도출되면서 t 통계량도 1.65 이상으로 유의한 최종 5개의 가설을 최종으로 채택하였다. 우선 '조합설립인가(H1)'에 미치는 경로계수가 0.127, '사업시행인가(H2)'에 미치는 경로계수가 0.343으로 나타났다. '관리처분계획은 사업만족도(H4)'에 0.145의 경로계수 값을 나타냈으며, '외부요인은 사업만족도(H6)'에 0.124의 경로계수 값이 도출되었다. 또한 '지속적 사업의사(H8)'에도 0.258의 경로계수를 나타냈다. 마지막으로 '사업만족도는 지속적 사업의사(H7)'에 0.727의 경로계수를 나타내는 것으로 도출되었다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2008년도 춘계학술대회 논문집
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• pp.405-406
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• 2008

• KSBB Journal
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• 제6권3호
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• pp.249-254
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• 1991

Permeabilization of Zymomonas mobilis with CTAB(Cetyltrimethylammoniumbromide) was investigated in order to obtain stable process for sorbitol production in the immobilized system. The optimum conditions for sorbitol formation were obtained in the case of using cells treated with 0.2% CTAB at$ 4^{\circ}C$ for 10 min. Permeabilized cells were treated with glutaraldehyde to cross-link the internal enzyme for the improvement of the enzyme stability. In this way, no significant loss of enzyme activity was apparent during 30-day operation in a continuous process. The productivity of the continuous process at dilution rate 0.2h-1 was 6.51g/1/h for sorbitol. The CTAB permeabilized cells could be used to produce sorbitol in the long term continuous process.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2006년도 춘계학술대회 논문집
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• pp.329-332
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• 2006

$Conform^{TM}$, a continuous extrusion forming process can produce a variety of very long extruded products such as aluminum alloyed wires, strips and profiles, hollow sectioned tubes, coated wires used in the current forming industry. This process has some advantages like as superiority of pre-heating free, availability of high extrusion ratio and continuous forming without stroke limit. But it is still difficult to analyze the realistic model of the process. In this study the analysis using two-dimensional model of $Conform^{TM}$ process together with several parametric investigations on the heat transfer are carried out by FEA code DEFORM $^{TM}2D$. In spite of simple model the results of analysis shows a good guidance to design the real process.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2007년도 추계 학술대회논문집
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• pp.243-248
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• 2007

A three-dimensional (3D) unstructured hydrodynamic solver for transient two-phase flows has been developed. A two-fluid three-field model was adopted for the two-phase flows. The three fields represent a continuous liquid, an entrained liquid, and a vapour field. The hydrodynamic solver is for the 3D component of a nuclear system code and the component-scale analysis tools for transient two-phase flows. The finite volume method and unstructured grid are adopted, which are useful for the flows in a complicated geometry. The semi-implicit ICE (Implicit Continuous-fluid Eulerian) numerical scheme has been adapted to the unstructured non-staggered grid. This paper presents the numerical method and the preliminary results of the calculations. The results show that the numerical scheme is robust and predicts the phase change and the flow transitions due to boiling and flashing problems well.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 1999년도 춘계학술대회논문집
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• pp.107-110
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• 1999

The purpose of this research is for the development of a new type forging equipment H.C.G(Hyundai Continuous Grain-flow) by using two virtual build-up tools rigid viscoplastic FEM and downsized plasticine experiment. This forging equipment consists of consecutive horizontal and vertical pressure while the traditional forging method consists of only vertical pressure. Using this method high quality crankshafts can be forged as it can maintain a continuous grain flow. The factors considered in the development of equipment are die geometry for flawless deformed shape die reaction forces stress/strain distributions and continuous material flow. We carried out several numerical simulations and downsized plasticine experiments for the proper design of the forging equipment. The validity of those simulation results is confirmed by checking with the actual test results. Based on these simulation results the proper design of the H.C.G for ging equipment is enabled.

• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 1996년도 International Conference on Agricultural Machinery Engineering Proceedings
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• pp.863-877
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• 1996

A drying model to predict the drying process in continuous dryer was developed and proved by drying experiments. The experiment showed that the difference of moisture contents between the predicted and the observed was within 0.5%(wb). There was no cracked rice found even in high drying rate with the inlet moisture content over 23%(wb), and tempering treatment in the same temperature reduced the ratio of cracked rice. There was a little difference in the ratio of cracked rice between 40$^{\circ}C$ and 45$^{\circ}C$ drying temperatures with the final drying moisture content (14.5% wb), and the cracked rice increased at 55$^{\circ}C$. As a results, it was better to make fast drying on the rice over 23%(wb) inlet content it was recommended to keep drying at 45$^{\circ}C$.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1988년도 전기.전자공학 학술대회 논문집
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• pp.624-627
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• 1988

This paper describes the implementation of recognition of speaker - dependent Korean spoken continuous digits. The recognition system can be divided into two parts, acoustic - phonetic processor and lexical decoder. Acoustic - phonetic processor calculates the feature vectors from input speech signal and the performs frame labelling and phone labelling. Frame labelling is performed by Bayesian classification method and phone labelling is performed using labelled frame and posteriori probability. The lexical decoder accepts segments (phones) from acoustic - phonetic processor and decodes its lexical structure through phone network which is constructed from phonetic representation of ten digits. The experiment carried out with two sets of 4continuous digits, each set is composed of 35 patterns. An evaluation of the system yielded a pattern accuracy of about 80 percent resulting from a word accuracy of about 95 percent.