PC-NIPC를 활용한 90° 곡관 하류에 설치된 오리피스 유량계에 대한 불확실도 정량화

배재현,장경식,이공희 한국에너지학회 2022 한국에너지공학회 학술발표회 Vol.2022 No.10

제2분과 <재난안전특별위원회1: 재난안전 제도 개선> : 발표 ; 112,119 신고센터 전문성 강화와 효율적 운영방안

배재현 한국정책학회 2015 한국정책학회 춘계학술발표논문집 Vol.2015 No.-

Efficacy and Safety of Low-Dose Propiverine in Patients with Lower Urinary Tract Symptoms/Benign Prostatic Hyperplasia with Storage Symptoms: A Prospective, Randomized, Single-Blinded and Multicenter Clinical Trial

배재현,김선옥,유은상,문경현,경윤수,김형지 대한비뇨의학회 2011 Investigative and Clinical Urology Vol.52 No.4

Purpose: The aim of this study was to evaluate whether low-dose anticholinergics combined with an a1-receptor antagonist would continue the effect of an alpha-blocker, decrease the side effects of anticholinergics, and improve the symptoms of lower urinary tract symptoms/benign prostatic hyperplasia (LUTS/BPH). Materials and Methods: Two hundred nine men with LUTS/BPH with storage symptoms (International Prostate Symptom Score [IPSS] ≥12; storage symptoms ≥4) were randomly assigned in a prospective, multicentered, and single-blind fashion to either the control group (alfuzosin 10 mg, once daily) or the combined group (alfuzosin 10 mg, once daily, and propiverine 10 mg, once daily) for 2 months. IPSS, maximal urinary flow rate (Qmax), and postvoid residual volume (PVR) were used to grade symptoms, side effects, and the impact on quality of life (QoL) at the start of the study and after 1 and 2 months. Results: There were no significant differences in patient background, including age, prostate size, Qmax, and PVR, between the control group and the combined group. In the combined group, the IPSS total score and the IPSS storage symptom score were significantly improved compared with the control group. The IPSS voiding symptom score, QoL, Qmax, and PVR did not differ significantly. There were no serious side effects in either group. Conclusions: Management with an a1-receptor antagonist combined with a low-dose anticholinergic improved the total score and storage symptom score of the IPSS compared with a1-receptor antagonist only group without causing serious side effects. This initial combination medication can be considered an effective and safe treatment modality for LUTS/BPH patients with storage symptoms.

Effects of processing parameters on creep behavior of 316L stainless steel produced using selective laser melting

배재현,Jong Min Yu,Van Hung Dao,Vanno Lok,윤기봉 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.9

The selective laser melting (SLM) method is being increasingly applied in the aerospace and power industries for the production of high temperature critical components. The effects of SLM processing parameters, such as laser power, scanning speed, and energy density on the creep properties were investigated for 316L stainless steel (SS316L). The effect of building direction was also studied. The creep resistance was influenced by the manufacturing direction. The vertical specimen demonstrated a longer creep life and higher creep resistance than the horizontal specimen. The creep resistance remained constant when the energy density was kept constant during manufacturing. If insufficient energy density was used for manufacturing, internal defects, such as voids and unmelt powder were generated, and lowered the creep resistance. However, if sufficient energy density higher than a minimum value was employed, the material creep properties mainly depended on the level of the energy density.

미국의 재난대응과 협력적 거버넌스

배재현,이명석 한국정책분석평가학회 2010 政策分析評價學會報 Vol.20 No.1

허리케인 ‘카트리나’와 같은 예측이 불가능한 대규모 재난의 경우, 공식적 권한과 예산을 가진 정부도 혼자 힘만으로 재난을 효과적으로 관리할 수 없다. 그러므로 정부는 계층제적 단일조직을 통한 기존의 전통적 재난관리방식에서 벗어나 다양한 사회구성원들이 독립된 권한과 자율성을 가지고 참여하는 협력적 네트워크를 통하여 대규모 재난에 대응하고, 다양한 참여자들의 협력을 이끌어내기 위한 거버넌스를 설계하고 관리하는 새로운 역할을 담당하여야 한다. 미국사회에 큰 충격을 주었던 허리케인 ‘카트리나’ 사례를 분석한 결과, 재난관리에 있어서 미국의 지방정부와 연방정부는 여전히 전통적인 접근방식에서 벗어나지 못하고 있었으며, 네트워크의 구축과 관리의 모든 측면에서 협력적 거버넌스가 구현되지 못하여 지방정부와 연방정부 모두가 효과적인 재난 방재에 실패하였다. 이는 재난대응체제 구축에서부터 재난방제 활동에 이르기까지 협력적 네트워크를 통한 재난대응과 정부 조정의 필요성을 잘 보여주고 있다.

Isosteric Heat of Potential Confinement in the Hydrogen Storage Material

배재현,정종현,이예리,황정운,김동욱,손승욱,임지순 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2015 NANO Vol.10 No.8

In the hydrogen storage problem, if an attractive potential well is formed inside the void space of porous materials, the storage gas density is expected to increase significantly compared to the H2 gas density outside the material. Actually, the overall H2 density inside the material is enhanced basically by a Boltzmann factor of exp[-U/kT] where U (< 0) is some averaged potential energy. Corresponding to this negative potential energy, latent heat is released in the H2 gas confinement process. We theoretically investigate the energetics involved during the H2 storage in the potential well and, from the equilibrium thermodynamic principles, we derive a formalism for the isosteric heat of potential confinement of the H2 gas. Since the gas density inside the potential well increases tremendously, the van der Waals equation is adopted to describe the nonideal gas behavior of H2. We compare our results to the well-known expression for the isosteric heat of adsorption where, unlike our case, the molecules are bound to specific adsorption sites in the material.

요도내압에 대한 선택적 노르에피네프린 재흡수 차단제의 효과

배재현,문두건,이정구 大韓泌尿器科學會 2001 Korean Journal of Urology Vol.42 No.6

Preoperative Predictive Factors for Parathyroid Carcinoma in Patients with Primary Hyperparathyroidism

배재현,최형진,Yenna Lee,문민경,박영주,신찬수,박도준,장학철,김성연,김상완 대한의학회 2012 Journal of Korean medical science Vol.27 No.8

This study was conducted to review the clinical characteristics of parathyroid carcinoma (PC) and to evaluate potential preoperative predictive factors for PC in patients with primary hyperparathyroidism (PHPT). We performed a retrospective review of electronic medical records of 194 patients with pathologically confirmed PHPT in affiliated teaching hospitals of Seoul National University from January 2000 to March 2011. Adenoma was diagnosed in 171 patients, hyperplasia in 12, and carcinoma in 11. Several biochemical measurements were higher in patients with PC than in patients with benign disease,including serum total calcium (P < 0.001), intact parathyroid hormone (P = 0.003), and alkaline phosphatase (ALP) (P < 0.001). Tumors were larger in PC than in benign disease (P < 0.001). Multivariate analysis revealed that serum ALP level (P < 0.001) and tumor size were associated with PC (P = 0.03). Tumor size and serum ALP level were evaluated as preoperative predictive factors for PC using ROC analyses: a tumor size of 3.0 cm (sensitivity 90.9%, specificity 92.1%) and serum ALP level of 285 IU/L (83.3%, 97.0%) had predictive value for the diagnosis of PC in patients with PHPT. In conclusion, elevated serum ALP and a large parathyroid mass at the time of diagnosis can be helpful to predict PC in patients with PHPT.

The Influence of Dependence on Satisfaction and Commitment in Store-Tenant RelationshipThe Mediating Role of Power - The Case of Department Stores in China

배재현,정인식,이현정 한국전략마케팅학회 2008 마케팅논집 Vol.16 No.2

This study examines the use of power in exchange relationship between department stores and their retail tenants in China. The store-tenant relationship in this study is a kind of horizontal channel relationship with a unilateral dependence structure. This study uses data from 295 sub-tenant retailers in China to examine the use of coercive and non-coercive influence strategies by department stores to manage their relationships with sub-tenants. It was found that the use of coercive power by the department store, as perceived by subtenant retailers, has no effect on their satisfaction. Rather, it is the store’s use of non-coercive power that produces a positive effect on sub-tenant retailers’economic and social satisfaction which in turn has a positive effect on their commitment and on performance. The power of large department stores is embedded with their historical role of being the state’s retailing arm and still having strong influence on small retailers. 이 연구는 중국에 있어서의 백화점의 임차인에 대한 영향력 행사가 관계교환에 미치는 영향에 관한 것이다. 백화점과 임차인 간의 관계는 일종의 일방적인 관계구조를 가진 수평적 관계라 하겠다. 따라서 이 연구는 중국에서의 295개 백화점 임차인을 대상으로 백화점이 임차인에 행하는 강압적/비강압적 행위가 임차인과의 관계형성에 미치는 영향을 규명하고 있다. 임차인에 대한 강압적인 영향력 행사는 임차인의 관계성에 대한 만족에 긍정적인 영향을 미치지 못 하는 것으로 나타났다. 오히려 비강압적인 영향력 행사가 임차인의 사회적, 경제적 만족에 긍정적인 영향을 주는 것으로 나타나고 있다. 중국에서의 대형 백화점의 임차인에 대한 우월적 지위는 중국 소매형태에 기인하며 현대에서도 그 영향력이 크다 하겠다.

Diabetes Fact Sheet in Korea 2021

배재현,한경도,고승현,양예슬,최종한,최경묵,권혁상,원규장 대한당뇨병학회 2022 Diabetes and Metabolism Journal Vol.46 No.3

Background: This study aimed to investigate the prevalence and management of diabetes mellitus, risk-factor control, and comorbidities among Korean adults.Methods: We conducted a cross-sectional analysis of data from the Korea National Health and Nutrition Examination Survey to assess the prevalence, treatment, risk factors, comorbidities, and self-management behaviors of diabetes mellitus from 2019 to 2020. We also analyzed data from the Korean National Health Insurance Service to evaluate the use of antidiabetic medications in people with diabetes mellitus from 2002 through 2018.Results: Among Korean adults aged 30 years or older, the estimated prevalence of diabetes mellitus was 16.7% in 2020. From 2019 through 2020, 65.8% of adults with diabetes mellitus were aware of the disease and treated with antidiabetic medications. The percentage of adults with diabetes mellitus who achieved glycosylated hemoglobin (HbA1c) <6.5% was 24.5% despite the increased use of new antidiabetic medications. We found that adults with diabetes mellitus who achieved all three goals of HbA1c <6.5%, blood pressure (BP) <140/85 mm Hg, and low-density lipoprotein cholesterol <100 mg/dL were 9.7%. The percentage of self-management behaviors was lower in men than women. Excess energy intake was observed in 16.7% of adults with diabetes mellitus.Conclusion: The prevalence of diabetes mellitus among Korean adults remained high. Only 9.7% of adults with diabetes mellitus achieved all glycemic, BP, and lipid controls from 2019 to 2020. Continuous evaluation of national diabetes statistics and a national effort to increase awareness of diabetes mellitus and improve comprehensive diabetes care are needed.