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작업조 구성과 작업량 평준화를 고려한 작업할당문제에 관한 연구
심동현,이영훈 대한산업공학회 2009 산업공학 Vol.22 No.3
This research deals with a task assignment problem to worker group which consists of one master and one assistant. Each task must be assigned to only one worker group and it is possible to make a pair of each master and each assistant to organize a worker group. A worker group may have more than one task assigned to it, but the workloads of each worker group must be balanced within the allowable range. This problem can be formulated mathematically using the Mixed Integer Programming(MIP), where the objective function is to minimize the total assignment cost. A two phase heuristic algorithm is suggested in order to find approximate solutions. The first phase is to obtain an initial solution, where the initial assignment is performed to follow the workload adjustment. In the second phase, the solution is improved through the repeated process of the exchange and the assignment adjustment. Numerical experiments have been performed to evaluate the performance of the heuristic algorithm.
중등도와 중증의 건선환자에서 생물학제제 치료 후 치료 만족도에 대한 평가
심동현,김민성,나찬호,최훈,신봉석 대한건선학회 2021 대한건선학회지 Vol.18 No.2
Background: Psoriasis is a chronic disease, which is linked on significant negative impact on patients’ quality of life (QoL). Although the high efficacy of biologics in psoriasis has been well known through objective measures, studies on their treatment satisfaction are limited. Objective: To evaluate treatment satisfaction for patients with psoriasis treated with biologics who have experience in oral agent treatment. Methods: Treatment satisfaction was evaluated at the time of treatment with oral agents before administration of the biologics and at the last visit after administration of the biologics. QoL was evaluated by Dermatology Life Quality Index (DLQI) and treatment satisfaction was evaluated by Treatment Satisfaction Questionnaire for Medication (TSQM)-9. Results: Treatment satisfaction with biologics was higher in all effectiveness, convenience, and global satisfaction domains compared to when treated with oral agents (p<0.001), and the mean score ranged from 73.8 to 80.1.The difference in treatment satisfaction score was not significant depending on the type of biologic being administered, and the better the treatment response after administration to the biologic, the higher the treatment satisfaction was, which showed a statistically significant correlation (p<0.05). DLQI score significantly decreased from 22.2± 5.2 to 3.1±3.3 after biologics treatment (p<0.001). Conclusion: The results of this study showed that biologics improved treatment satisfaction and QoL in psoriasis patients. Evaluation of treatment satisfaction will be helpful in comparing various medications and making treatment decisions.
건선 환자에서 Secukinumab 치료 중 진단된 폐암 1예
심동현,정병훈,최훈,김민성,나찬호,신봉석 대한건선학회 2022 대한건선학회지 Vol.19 No.2
Psoriasis is a chronic inflammatory skin disease that affects the health and quality of life of patients. Biologics including interleukin-17A inhibitors have shown good efficacy and tolerable safety in patients with moderate-to-severe psoriasis. A 58-year-old man presented with mild pruritic multiple papules and plaques with scales on his whole body for more than 30 years. The patient diagnosed with psoriasis had been treated with phototherapy for more than 3 months, but the skin symptoms were rather aggravated, so secukinumab treatment was introduced. The patient’s skin lesions improved rapidly, and secukinumab treatment was continued without any adverse events for several years. However, 62 months later, the patient informed that he was diagnosed with lung cancer and had undergone surgery. Since then, the patient discontinued secukinumab treatment and has been treated with topical agents. Herein, we report a case of lung cancer diagnosed during secukinumab treatment in a patient with psoriasis.