• 산업진흥연구
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• 제8권4호
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• pp.29-36
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• 2023

본 연구는 산업재해를 예방하기 위하여 제조업 현장에서 위험성평가 시 위험 가중요인이 반영될 수 있도록 방법론을 제시하고 실제 제조업 사업장에 적용하여 실증하였다. 제조업에서 최근 10년간(2012~2021) 발생한 사고 242,906건 전체에 대하여 사례를 통계적으로 분석한 결과 6개월 미만의 신규 작업자, 외국인 작업자, 55세 이상의 고령 작업자 및 손과 팔이 위험구역에 노출되는 작업, 9시에서 12시 전까지 실시되는 비일상 작업은 유의성 있게 사고발생률이 높게 나타났다. 또한 표적집단면접(FGI)을 통하여 위험성 결정 단계에서 사고의 가능성 추정에 가중 값으로 적용하도록 하였다. 본 연구결과를 통하여 위험성평가 시 위험 가중요인을 정량적으로 반영할 수 있고 파악된 위험의 크기를 보다 근접하게 평가함으로써 사고를 예방하는데 그 의의가 있다.

• 한국수자원학회논문집
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• 제48권12호
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• pp.1037-1049
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• 2015

북한의 대규모 자연재난은 홍수와 태풍 그리고 집중호우로 인한 수해피해가 대부분이며 이러한 피해는 1990년대 중반부터 해마다 북한의 경제난을 악화시키고 있다. 북한 당국도 수해피해의 심각성을 인식하여, 1990년대 말부터 하천정리, 농경지 복구, 토지정리사업, 조림사업 등을 실시하였으나, 계속되는 수해피해를 막지 못하고 있다. 본 연구는 상습적으로 발생하는 북한의 홍수피해에 대한 위험도를 산정하기 위해 일반적인 위험도 평가과정은 동일하게 유지하되 대외적으로 수문자료 취득이 힘들고 지형자료가 공개되지 않은 미계측지역이라는 유역특성을 반영하여 강우-유출에 대한 모의를 추가적으로 실시하였다. 또한, 위험도 평가는 국제기구(IPCC)의 기준에 따라 홍수에 대한 위험성과 노출성, 취약성 인자들을 선정하여 홍수 위험도를 판단하였다.

• Journal of Digestive Cancer Research
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• 제10권1호
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• pp.31-38
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• 2022

Ulcerative colitis (UC) exhibits chronic intestinal inflammatory conditions with cycles of relapse and remission. The incidence is rapidly growing in Asian countries including South Korea possibly due to changes in lifestyles. Although the etiology of inflammatory bowel disease is inconclusive, gut microbiota composition is considered a critical factor involved in the pathogenesis of UC. The overgrowth of pathogenic bacteria evokes hyper-immune responses in gut epithelium causing tissue inflammation and damage. Also, failure to regulate gut epithelium integrity due to chronic inflammation and mucus depletion accelerates bacterial translocation aggravating immune dysregulation. Gut microbiota composition responds to the diet in a very rapid manner. Epidemiological studies have indicated that the risk of UC is associated with low plant foods/high animal foods consumption. Several bacterial strains consistently found depleted in UC patients use plant food-originated dietary fiber producing short chain fatty acids to maintain epithelial integrity. These bacteria also use mucus layer mucin to keep gut microbiota diversity. These studies partly explain the association between dietary modification of gut microbiota in UC development. Further human intervention trials are required to allow the use of specific bacterial strains in the management of UC.

• 한국심리학회지 : 문화 및 사회문제
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• 제29권1호
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• pp.75-99
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• 2023

본 연구는 심리부검을 통해 완결된 자살자의 자살행동과 자살위험요인을 탐색하고 이를 지표로 자살 유형을 살펴보는 데 목적이 있다. 또한 각 유형에 영향을 미치는 영향요인을 이차적으로 살펴보고자 하였다. 본 연구를 위해 128명의 완결된 자살자와 관련 유가족과 지인을 대상으로 심리부검 면담을 실시했고 유형 분석에 필요한 지표변수를 최종 선정하였다. 자살위험요인 지표변수로 정신장애, 자살/자해, 중대한 신체변화, 배우자간 갈등, 직장/학교 내 적응 및 관계문제, 실직/해고, 사업실패, 무직, 심각한 재정적 문제가 선정되었다. 자살행동 지표변수로 자살의지표현, 자살유서, 구조도움요청, 자살시간/장소/방법, 과거 자살/자해 시도, 자살자 최초발견이 선정되었다. 잠재계층분석(Latent Class Analysis)과 3단계 분석 방법(3-step method)을 이용하여 유형을 분석하였고 각 유형에 대한 차이를 규명하고자 외부변수(경제적 변화, 동거, 스트레스 존재/변화, 관계변화, 가족 중 정신장애/알코올문제/신체질병, 학교/직장 만족)를 활용하였다. 분석 결과 자살행동을 기반으로 한 유형 분석에는 5가지 계층(경제문제, 적응문제, 복합문제, 정신과문제, 사건반응), 자살위험요인을 기반으로 한 유형 분석에서는 3가지 계층(주거지-자살시도-가족발견형, 비주거지-비자살시도-지인발견형, 주거지-비자살시도-가족발견형)이 탐색되었다. 자살행동 기반 3가지 유형 간에는 성별, 결혼상태, 동거여부, 관계변화에서 유의미한 차이를 보였고 특히 유형 3(주거지-비자살시도-가족발견형)의 경우 다른 유형에 비해 동거중인 상태로, 기혼자일 가능성이 높고 대인관계 갈등이 두드러졌다. 자살위험요인 기반 5가지 유형 간에는 경제적 변화, 동거, 스트레스, 관계변화, 가족 관련 문제, 학교/직장 만족도에서 차이를 보였는데 특히 유형3(복합문제)은 상대적으로 가족 관련 문제는 없으나 개인적인 스트레스 발생과 악화가 두드러졌다. 향후 해당 유형과 유형별 영향요인에 맞는 자살예방과 위기개입 방안이 필요할 것으로 보인다.

• Journal of Oral Medicine and Pain
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• 제42권2호
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• pp.29-34
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• 2017

Purpose: To evaluate aggravating factors of intermittent locking among temporomandibular joint using magnetic resonance imaging (MRI) and diagnostic criteria for temporomandibular disorder (DC/TMD) diagnosis. Methods: A retrospective analysis was conducted of 35 patients with intermittent locking history but normal intra-articular findings between September 2012 and June 2015 in Kyung Hee University Dental Hospital. A standardized DC/TMD assessment was performed on subjects with MRI findings. Clinical findings were assessed on the basis of maximum mouth opening (active & passive), self-reported habits, patients' age, gender, systemic diseases at the initial visit. First, chi square test was used to examine differences with variables and then risk factors for intermittent locking were assessed using multivariate logistic regression. Results: Self-reported bruxism was strongly associated with intermittent locking history. Conclusions: The new DC/TMD protocol is intended for use within any clinical setting and supports the full range of diagnostic activities from screening to definitive evaluation and diagnosis. Self-reported sleep bruxism has been associated with a higher likelihood of intermittent locking. Comorbidity is therefore a factor that must be assessed. It is necessary to consider the amount of contact of the teeth and the duration.

• Annals of Clinical Neurophysiology
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• 제12권2호
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• pp.47-54
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• 2010

Background: Carpal tunnel syndrome (CTS) is the most common entrapment neuropathy caused by compression of the median nerve beneath the transverse carpal ligament. CTS can be correctly diagnosed by the patients' description of symptoms and electrophysiological tests that measure nerve conduction through the wrist. Many previous studies reported various risk factors of CTS, such as obesity, diabetes mellitus, thyroid disease and trauma. Obesity is associated with both hyperlipidemia and CTS. This study focused on the relationship between severity of CTS and serum lipid level. Methods: One hundred fourteen patients with CTS and 74 controls were divided into four groups according to the severity; normal, mild, moderate and severe. And then serum total cholesterol (TC), triglyceride (TG), low-density lipoprotein (LDL-C) and high-density lipoprotein (HDL-C) were measured in each group. Results: There was a positive correlation between TG and CTS severity (p<0.001). But TC, LDL-C and HDL-C were not correlated with CTS severity. Conclusions: These results suggest that high serum TG may act as an aggravating factor of CTS.

• Journal of Korean Neurosurgical Society
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• 제60권5호
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• pp.577-583
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• 2017

Objective : Laminoplasty is an effective surgical method for treating cervical degenerative disease. However, postoperative complications such as kyphosis, restriction of neck motion, and instability are often reported. Despite sufficient preoperative lordosis, this procedure often aggravates the lordotic curve of the cervical spine and straightens cervical alignment. Hence, it is important to examine preoperative risk factors associated with postoperative kyphotic alignment changes. Our study aimed to investigate preoperative radiologic parameters associated with kyphotic deformity post laminoplasty. Methods : We retrospectively reviewed the medical records of 49 patients who underwent open door laminoplasty for cervical spondylotic myelopathy (CSM) or ossification of the posterior longitudinal ligament (OPLL) at Pusan National University Yangsan Hospital between January 2011 and December 2015. Inclusion criteria were as follows : 1) preoperative diagnosis of OPLL or CSM, 2) no previous history of cervical spinal surgery, cervical trauma, tumor, or infection, 3) minimum of one-year follow-up post laminoplasty with proper radiologic examinations performed in outpatient clinics, and 4) cases showing C7 and T1 vertebral body in the preoperative cervical sagittal plane. The radiologic parameters examined included C2-C7 Cobb angles, T1 slope, C2-C7 sagittal vertical axis (SVA), range of motion (ROM) from C2-C7, segmental instability, and T2 signal change observed on magnetic resonance imaging (MRI). Clinical factors examined included preoperative modified Japanese Orthopedic Association scores, disease classification, duration of symptoms, and the range of operation levels. Results : Mean preoperative sagittal alignment was $13.01^{\circ}$ lordotic; $6.94^{\circ}$ lordotic postoperatively. Percentage of postoperative kyphosis was 80%. Patients were subdivided into two groups according to postoperative Cobb angle change; a control group (n=22) and kyphotic group (n=27). The kyphotic group consisted of patients with more than $5^{\circ}$ kyphotic angle change postoperatively. There were no differences in age, sex, C2-C7 Cobb angle, T1 slope, C2-C7 SVA, ROM from C2-C7, segmental instability, or T2 signal change. Multiple regression analysis revealed T1 slope had a strong relationship with postoperative cervical kyphosis. Likewise, correlation analysis revealed there was a statistical significance between T1 slope and postoperative Cobb angle change (p=0.035), and that there was a statistically significant relationship between T1 slope and C2-C7 SVA (p=0.001). Patients with higher preoperative T1 slope demonstrated loss of lordotic curvature postoperatively. Conclusion : Laminoplasty has a high probability of aggravating sagittal balance of the cervical spine. T1 slope is a good predictor of postoperative kyphotic changes of the cervical spine. Similarly, T1 slope is strongly correlated with C2-C7 SVA.