[문학] 에밀 졸라, 《여인들의 행복 백화점》

이시욱 (주)유레카엠앤비 2021 유레카 Vol.- No.456

소아 편평족 환자에서 Pressure Based Customized 3-Dimensional Printing Insole의 유용성

이시욱,최정훈,권혁준,송광순 대한족부족관절학회 2020 대한족부족관절학회지 Vol.24 No.3

Purpose: A flatfoot that fails to form a longitudinal foot arch is a common lower limb deformity in children. This study evaluated the structural and functional effects of the insole for pediatric flexible flat foot (PFFF). Materials and Methods: Twenty-nine PFFF patients (20 boys and 9 girls, 58 feet) with bilateral symptomatic flatfoot deformities between February 2017 and May 2019 were included in this study. Sixteen patients (32 cases, study group) were treated with a pressured based 3-dimensional printing insole, and 13 patients (26 cases, control group) were followed up regularly without any treatment. Flatfoot was diagnosed by a lateral talo-first metatarsal angle of more than 4° in convex downward and talocalcaneal angles of more than 30° and a calcaneal pitch of less than 20°. The foot pressures, including the midfoot pressure, total foot pressure, and the ratio of the midfoot pressure to the total foot pressure, were evaluated by pedobarography. The clinical scores were assessed using the visual analogue scale (VAS), American Orthopaedic Foot and Ankle Society (AOFAS), and Pediatrics Outcomes Data Collection Instrument (PODCI) scores. Results: The mean age of the study group was 9.16 years, and the mean age of the control group was 7.73 years. The mean follow-up period was 16 months. The change in the lateral talocalcaneal angle was –4.664°±1.239° in the study group and –0.484°±1.513° in the control group. A significant difference in the amount of change of the lateral talocalcaneal angle was observed between the two groups (p=0.034). The midfoot pressures were similar in the two groups. Conclusion: Pressure based customized 3-dimensional printing insole in PFFF may have some effect on the hindfoot bony alignment, but it does not affect the changes in midfoot pressure.

어깨 통증의 진단 및 비수술적 치료

이시욱 대한의사협회 2019 대한의사협회지 Vol.62 No.12

The shoulder is the third most common region in which musculoskeletal pain occurs, involving symptoms that cause a decrease in quality of life and a reduced ability to perform activities of daily life if untreated. Many lesions cause shoulder pain; therefore, we included those commonly encountered in primary care clinics. We aimed to describe the diagnosis and non-operative or conservative treatment modalities of rotator cuff tendinopathy, impingement syndrome, rotator cuff tear, adhesive capsulitis, biceps tendonitis, and acromioclavicular arthritis. Exercise has been reported to be effective for the treatment of impingement syndrome, and the effect of exercise has been shown to reduce pain. Both home-based self-exercise and exercise supervised by professionals are equally effective. Types of exercise should include stretching, active, active-assistive, and resistive exercise. Ten repetitions per set for 3 sets of each exercise should be prescribed initially post-injury. Repetition and resistance should be increased as strength grows. The use of ultrasonography for the diagnosis of shoulder pain has increased recently. Corticosteroid injection under ultrasonographic guidance is effective in reducing pain.

요하네스 케플러의 대단한 발견

이시욱 심미안 2007 문학들 Vol.- No.8

Approximate Cost Estimating Model of Eco-type Trade for River Facility Construction Using Case-Based Reasoning and Genetic Algorithms

이시욱,진영민,우성권,신도형 대한토목학회 2013 KSCE Journal of Civil Engineering Vol.17 No.2

Cost estimation in the construction industry is a critical process for the successful execution of construction. In particular, the total cost for a construction project is determined at the planning stage, and its estimation is very important because the decision making of the construction project owner regarding the project size, budget, and construction time depends on the total cost estimation. However, research concerned with the cost estimation for river facility construction has focused on research applicable in the early design stages rather than at the planning stage, which is the initial stage of a construction project. In addition, mainstream research has concentrated on the development of models centered on the estimation techniques being used currently in actual design engineering fields. For this reason, this study has developed an approximate construction cost estimating model for the eco-type river facility construction trade by applying Case-Based Reasoning (CBR) and Genetic Algorithms (GAs), which can be used at the planning stage. In order to develop the model, historical data was collected and analyzed; in order to overcome the limitations of the data collection, virtual data were also created and used. The model was developed in such a manner that it can estimate the construction cost with only eight and eleven attributes for the two eco-type trades used in the model, which can be applied at the planning stage. The results of the verification of the proposed model indicate that the model is satisfactory when applied in the approximate cost estimation of eco-type trade for river facility construction at the planning stage. It is expected that the proposed model will be applied easily and conveniently to the estimation of the approximate construction cost of eco-type trade for river facility construction at the planning stage.

요하네스 케플러의 대단한 발견

이시욱 심미안 2007 문학들 Vol.- No.8

신경 자극기를 사용하여 요추 선택적 추간공 경막외 스테로이드 주입술: 단기간의 유효성에서 바늘 끝 위치의 효과

이시욱,이창한 대한척추외과학회 2021 대한척추외과학회지 Vol.28 No.1

연구 계획: 후향적 연구목적: 우리는 신경 자극기를 이용한 선택적 추간공 경막외 스테로이드 주입술의 단기간의 유효성에서 바늘 끝 위치의 영향을 결정하는 것이었다. 선행 연구문헌의 요약: 신경 자극기는 신경근에 가까운 바늘 위치를 가능하게 하며, 바늘의 근접성이 추간공 경막외 스테로이드 주입술의 성능에 영향을 미치는지 여부는 알려져 있지 않다. 대상 및 방법: 45명의 환자들은 주사된 신경근의 수에 따라 분류되었다. 그룹 I는 단일 척수 신경근에서 주사를 시행한 환자를 포함시켰고 나머지는 그룹 II에 속했다. 바늘 끝 위치는 추간공을 4 사분명으로 나누어 평가하였다. A 그룹은 주사된 척수 신경근의 모든 바늘 끝이 사분면 1에 있을 때를 말하며,최소한 하나의 척수 신경근에서 사분면 2에서 사분면 4에 바늘 끝의 위치가 있을 때를 B 그룹으로 하였다. Oswestry Disability Index (ODI)와 Brief Pain Inventory (BPI) 및 residual pain (RP)를 평가하였다. 결과: 2주 후에, ODI와 BPI 및 RP 점수의 현저한 감소가 모든 환자와 그룹 I 및 그룹 II에서 나타났다. 다른 변수를 고려했을 때, 그룹 I의 경우, 사분면 1에 바늘 위치를 가졌던 환자에서 ODI와 BPI 점수의 변화가 현저하게 크게 나타났으며, RP 점수는 통계적으로 더욱 향상되었다. 모든 환자에서, A 그룹은 B그룹보다 현저한 치료적인 효과를 가졌다. 그룹 II에서는, A 그룹과 B 그룹 사이에서 통계적인 차이가 없었다. 결론: 우리는 연구는 사분면 2보다 사분면 1에서 보다 나은 효과를 보여 주었으며, 전기 자극기를 이용한 추간공 경막회 스테로이드 주입술이 유용한 도구이다. Study Design: Retrospective study. Objectives: We aimed to determine the effect of needle tip position on the short-term effectiveness of transforaminal epidural steroid injection (TFESI) using a nerve stimulator (NS). Summary of Literature Review: NS enables the needle to be located as close to the nerve root as possible; however, it is not known whether needle proximity affects the performance of TFESI. Materials and Methods: Forty-five patients were grouped according to number of injected roots. Group I included patients administered TFESI in a single spinal nerve root, and the remainder belonged to group II. Needle tip positions were assessed by dividing the intervertebral foramen into 4 quadrants. Group A referred to all needle positions in quadrant 1 of the injected spinal nerve roots. Location of the needle tip in quadrants 2-4 in at least one spinal nerve root was seen in group B. The Oswestry Disability Index (ODI), Brief Pain Inventory (BPI), and residual pain (RP) were evaluated. Results: After 2 weeks, a significant decrease in the ODI, BPI, and RP score was noted in all patients, as well as in group I and group II separately. In group I, changes in ODI and BPI scores were statistically significantly greater and RP scores improved to a significantly greater extent in patients who had their needle position in quadrant 1. In all patients, group A had a significant therapeutic effect than group B. In group II, there was no statistically significant difference between group A and group B. Conclusions: Our study showed a better effect in quadrant 1 than in quadrant 2. NS guidance for TFESI is useful.

[문학] 조지 오웰, <파리와 런던의 따라지 인생>

이시욱 (주)유레카엠앤비 2021 유레카 Vol.- No.454

[문학] 안톤 체호프, 〈상자 속의 사나이〉〈산딸기〉

이시욱 (주)유레카엠앤비 2022 유레카 Vol.- No.461

수입관세 인하가 기업 생산성에 미치는 효과 분석

이시욱,Lee, Siwook 한국개발연구원 2007 韓國 開發 硏究 Vol.29 No.3

본 연구는 1993~2003년 기간 중 통계청의 "광공업통계조사보고서"의 원자료에 포함되어 있는 개별 사업체 수준의 패널자료를 이용하여 수입관세의 변화가 우리나라 개별 사업체의 생산성에 미치는 영향을 실증분석하고 있다. 분석 결과에 따르면, 첫째 분석기간 중 우리나라 제조업 전반의 생산성 변화는 산업 내 혹은 산업간 자원이동에 기인했다기보다는 개별 사업체 내부의 생산성 변화에 의해 결정된 것으로 나타났다. 둘째, 수입관세장벽이 낮을수록 개별 사업체의 총요소생산성 증가율이 높은 것으로 나타났다. 이는 관세 장벽의 철폐를 통한 수입시장의 개방이 국내시장에서의 경쟁을 촉진함으로써 개별 기업으로 하여금 생산 경영의 비효율성을 줄이고 기업의 혁신역량을 배양하는 유인으로 작용한 데 기인하는 것으로 사료된다. 셋째, 연도별로는 관세율 인하 후 첫 번째 연도의 생산성 증가율이 가장 높은 것으로 나타나 사업체들이 비교적 짧은 기간 내에 관세 변화에 적응하는 것으로 나타났다. 반면, 고용의 경우에는 관세율 인하 후 차기연도 내에는 통계적으로 유의한 수준의 고용 변화가 감지되지 않지만, 이후 고용증대효과가 서서히 나타나는 것으로 분석되었다. This paper empirically investigates the effects of import tariff on within-plant productivity growth in Korean manufacturing, using the detailed plant-level longitudinal data of the Korea Census of Manufacturers for the period of 1993-2003. Our main findings are as follows: First, the productivity changes of Korean manufacturing for the period under analysis were mostly induced by within-plant productivity gains, rather than within-industry and/or between-industry resource reallocations. Second, after controlling for firm-specific heterogeneity, the estimation results indicate that lowering tariff-barriers has a positive impact on within-plant TFP growth. We interpret the results in a way that trade liberalization through the removal of tariff and non-tariff barriers heightens the competitive pressure, which in turn creates incentives to reduce production and managerial inefficiency and to invest more on innovative activities. Third, we also find that plant productivity growth from reducing tariff barriers is particularly conspicuous within a year after tariff changes, which implies that plants are quickly adjusting to heightened import competition. On the other hand, our results show that the trade effect on employment creation proceeds relatively slow.