The purpose of this study was to identify the observable symptoms of musculoskeletal disease from electronic components manufacturing workers who involved in many repetitive tasks and to provide the basic data for the prevention and management. The survey was conducted on 721 people from 15 April, 2013 to 17 May, 2013 by selfrecording type. The results of the study are as follows. First, symptom complaints based on different body parts are in following order, waist was 12.9%, shoulder was 10.5%, neck was 7.4%, hand/wrist/finger was 7.4%, leg/foot was 4.4%, arm/elbow was 2.8%, and 21.9% of the respondents showed symptoms in more than one body part. Sex, age, marital status, work experience, work intensity, and past accident experience were statistically significant. Second, in the job stress evaluation, all male and female workers were below the median of Korean workers in all of 8 categories. the higher the scores for lack of job autonomy, the higher the symptom complaints of musculoskeletal disease. In the case of patients complain observable symptoms of musculorskeletal disease, they should receive proper outpatient treatment, various programs such as stretching by body parts, setting up a desirable working posture, switching to cyclical work, should b developed as much as possible.

Invariant 제약조건을 관리하기 위해서는 주로 데이터베이스 트리거를 사용하여 왔다. DB 트리거를 이용해서 제약조건을 관리하는 방법은 개념은 좋지만 시스템에 상당한 부하를 초래하며 성능 측면에서 비현실적이다. 또한, 현실적으로 Invariant는 항상 체크하는 것이 아니라 필요한 시점에서만 체크되어 관리되고 있다. 보통 Invariant는 관련된 비즈니스 프로세스 또는 단위업무를 수행할 때 체크된다. 더욱이 Invariant의 체크시점은 인력 및 장비의 가용성에 관계된 여러 경제적인 이유들로 인해 변경될 수 있다. 본 연구에서는 워크플로, BPMS등의 환경에서 비즈니스 Rule을 포함하는 Invariant 형태의 비즈니스 프로세스 제약조건을 통합 관리할 수 있는 방법론을 제시한다.