• 대한인간공학회지
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• 제33권2호
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• pp.143-153
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• 2014

Objective: The aim of this study is to investigate the effects of trunk-forearm supported sitting on trunk flexion angle, trunk extensor fatigue and seat contact pressure. Background: The relationship between sitting posture and musculoskeletal disorders of the trunk extensor fatigue and seat contact pressure has been documented. The trunk-forearm support type ergonomic chair was devised from the fact that trunk-forearm support has been reported to reduce trunk extensor activity and discomfort. Method: Using three different sitting postures, upright ($P_1$), trunk-forearm supported ($P_2$) and normal sitting ($P_3$), six healthy subjects participated in the study. Motion capture system was used to collect head and trunk flexion angle, and surface electromyography (sEMG) was used to collect myoelectric signal of upper trapezius, lower trapezius, erector spinae, multifidus, and pressure mat system was used to measure seat contact pressure. Results: When trunk and forearm were supported by the ergonomic chair, higher head flexion angle showed upright > trunk-forearm supported > normal in order, and muscle fatigue showed less than upright and normal sitting. Mean seat contact pressure decreased 19% than upright sitting. But muscle fatigue was not affected by each condition. Conclusion: Trunk-forearm supported sitting of the ergonomic chair showed positive effect in respect of trunk and head flexion angle, trunk extensor fatigue, seat contact pressure. To acquire comprehensive understanding of the effectiveness of the ergonomic chair, further studies such as anatomical effects from measurement of external applied loading effect to the body from interface pressure analysis are required. Application: The results of the publishing trend analysis might help physiological effects of trunk-forearm support type chair.

• International Journal of Contents
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• 제11권4호
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• pp.25-30
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• 2015

The objective of this study is to identify the current state of usage and needs for Smart Technology (ST) in the elderly care facilities based on the point of view of staff members. Using survey via mails, data were analyzed with responses from top- or middle-level staff members working in 171 elderly care facilities located in Seoul, Gyeonggi-do, and Chungcheongnam-do. Results indicated that the most needed smart technology was home automation, followed by nurse call system and health monitoring. The technology with the highest feasibility was health monitoring, followed by nurse call system and video phone. Staff members in higher positions working in the elderly care facilities had the highest expectation in improving the image of their facilities by using ST, while they had low expectation for the fact that ST may increase the locus of control of the elderly. This study implies that ST implementations may vary depending on the level of responsibility of staff members and ST how people responsible for the elderly care facilities subjectively perceive the ST.

• 한국산학기술학회논문지
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• 제21권5호
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• pp.191-205
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• 2020

본 연구는 노인장기요양시설에서 인적서비스 중심으로 제공되는 요양서비스의 한계를 보완하기 위해 요양시설 종사자들의 가상현실이나 인공지능 탑재 로봇 등의 차세대 기술의 활용 가능성에 대한 인식을을 탐색하고자 하였다. 조사대상은 노인장기요양시설 종사자로 하였으며, 시설의 직군별로 이질적인 세 집단(요양보호사, 사회복지사, 원장)을 구성하여 총 14명에 대한 포커스 그룹 인터뷰를 실시하였다. 인터뷰 내용은 노인장기요양시설에 차세대 기술 도입의 장점과 장애요인, 그리고 앞으로의 적용가능성 등에 관한 것이었으며, 분석 결과 총 3개의 주제와 8개의 범주, 26개의 하위 범주가 도출되었다. 연구의 주요 결과로, 차세대 기술 활용시 노인의 개인적 측면에서 노인의 심리·정서적 안정 효과, 호기심과 흥미 제공, 신체적 활동 욕구의 해소가 장점으로 기대되었으며, 요양서비스 인력의 입장에서는 신체적 활동제약 노인에게 유용한 서비스 제공, 배회 노인의 효과적 관리가 시설운영자의 입장에서는 시설의 홍보 활용이나 시대적 흐름에의 부합, 직원 교육의 유용성을 장점으로 기대되었다. 노인장기요양시설의 인력인 참여자들은 요양시설에 차세대 기술 도입시 예상되는 문제점에 대해서도 언급하였지만 다양한 측면의 장점이 더 많을 것으로 예상하였다. 미래에 요양서비스 분야에 차세대 기술이 도입되어 활용된다면 노인복지와 노인공학 발전에도 기여할 것이다.

• 과학기술학연구
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• 제2권2호
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• pp.145-189
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• 2002

이 글은 인구고령화에 대응하는 복지 과학기술의 잠재적 기여와 역할을 고찰한 시론이다. 이 글에서 복지 과학기술은 복지 중진을 위해 적용되거나 체화된 지식의 체계를 가리키되 신체기능의 저하나 손상에 대한 예방, 보조, 지원을 통해 삶의 질을 향상하는 기술을 의미하고, 단순히 손상되거나 저하된 신체기능의 보상과 대체만이 아니라 사회적 기술적 환경과 지원 시스템의 확충을 포함하는 개념이다. 복지 과학기술은 종래 장애인이나 노인 등 특정 집단의 사람들을 위한 제품이나 서비스에 초점을 맞추었으나 연령이나 장애에 관계없이 모든 사람이 사용할 수 있는 보편적 디자인제품이나 서비스를 강조하는 방향으로 중요한 변화가 일고 있다. 이러한 복지과학기술의 개념 변화는 복지 과학기술이 일차적으로 노인복지를 증진하는 잠재력을 주목할 뿐만 아니라 우리 사회의 삶의 질을 전반적으로 높이는 가능성을 직시하고 나아가서 사회경제적 활력을 증진하는 데 기여할 가능성을 포착할 수 있도록 한다. 인구고령화에 대응하는 복지 과학기술 또는 제론테크놀로지(GT)는 '개인적 지체'만이 아니라 '구조적 지체'에도 대응해야 한다는 것이 본고의 중요한 주장 가운데 하나이다. 이것은 노인들을 단지 사회적 보호나 개호의 대상자 집단으로 객체화하는 것이 아니라 나이가 들어서도 독립적으로 살아가고자 하는 주체적 존재이며 정상적 시민으로 바라보는 관점의 전환을 함축한다.

• 대한인간공학회지
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• 제29권4호
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• pp.639-646
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• 2010

The APAM's quantitative effectiveness and comparative study in preventing and treating pressure ulcer has not been sufficiently evaluated mainly because of uncertainty of pressure load input and lack of interpretation of dynamic perfusion recovery characteristics of soft tissue. The purpose of this paper was to quantify and analyze the alternating pressure characteristics of APAM as a preventive measure for pressure ulcers. To quantify the alternating load to human body, we introduced alternating pressure profile concept and developed parametric model of the profile. Regarding pressure level and cycle time, 3 global and 7 local periodic parameters were used to define the profile such as light, standard, typical and heavy duty profile shape. Pressure impulse ratio of light duty is the lowest but pressure fluctuation is significantly high. For the same duty shape, contact conditions are changed with alternating cycle time and more dramatically in shorter alternating cycle time conditions. We can conclude that if we use shorter alternating cycle time on APAM's operation we can get more positive effects regarding to inflated contact time condition. We proposed the quantitative methods on tissue viability study of external loading by simultaneous measurement of interface pressure and tissue perfusion with proper alternating pressure profile conditions.

• 한국정밀공학회지
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• 제28권8호
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• pp.984-991
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• 2011

The aim of this study is to develop a humeral Intramedullary fixation nail (HIFN) suitable for Korean people. In this study, CT images were obtained from 72 Korean cadaveric humeral bones and 3D Korean humeral bone models were reconstructed based on the CT images to investigate anatomical characteristics. Major design parameters of HIFN were selected using the morphological measurement information of the Korean humeral bone models. Through finite element analysis and mechanical tests, the developed HIFN prototype was compared with the Polarus HIFN ($ACUMED^{(R)}$, USA), and it was found that the HIFN prototype showed similar and/or superior mechanical performance compared to the Polarus HIFN. Also, clinical validation for the HIFN prototype was carried out to check predictable troubles in surgical operations. Finally, optimal design modification was proposed to prevent the possible axillary nerve injury due to the locking screw system of the HIFN prototype.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제13권4호
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• pp.15-23
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• 2007

Increase of aging population and demands for care and support systems, needs and demands for a variety of care services and housing facilities have increased. With the emergence of gerontechnology, tangible and intangible technologies and innovations have been explored and developed in many countries. Since housing environment is very important to define well-being and quality of life of the elderly, technology applications in the living environment are considered as important means. The purpose of this study is to enumerate and investigate technologies for the elderly to assist daily living and help care providers, and to explore technology applications in the built environments. This study also investigate how intelligent technologies are installed in the built environment and physical consideration for a variety of approaches. The content analysis was conducted to investigate technology developments for the elderly based on web materials and publication materials. The seven examples were chosen since they are seeking technologies especially for the elderly or aging-in place. General goals for the diffusion of intelligent homes expecially for the elderly are to be easy to install and remove, unobtrusive, redundant cueing, easy to use, and robust. The results of this study suggest application considerations for the technologies of the built environment for the elderly.

• 대한의용생체공학회:의공학회지
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• 제33권2호
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• pp.78-88
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• 2012

Knee joint instability by anterior cruciate ligament(ACL) rupture is allowing the abnormal loading condition at the tibial epiphysis locally, resulting in producing locally different bone bruise. The study examined difference between local alteration patterns of trabecular bone microarchitecture at medial and lateral parts of the tibial epiphysis by ACL rupture. Fourteen SD rats were divided into Control(CON; n = 7) and Anterior Cruciate Ligament Transection(ACLT; n = 7) groups. The tibial joints were then scanned by in vivo ${\mu}$-CT at 0, 4, and 8 weeks post-surgery. The results showed that alteration pattern on trabecular bone microarchitecture at medial part was significantly higher than that at lateral part of the tibial epiphysis in ACLT group from 0 to 8 weeks(P < 0.05). Tb.Th and Tb.Sp distributions were well corresponded with differences between aforementioned trabecular bone microarchitectural alteration pattens at medial and lateral parts of the tibial epiphysis in ACLT group from 0 to 8 weeks(P < 0.05). These findings suggest that the alteration patterns of trabecular bone microarchitecture should be locally and periodically considered, particularly with respect to the prediction of bone fracture risk by ACL rupture. Improved understanding of the alteration patterns at medial and lateral trabecular bone microarchitectures at the tibial epiphysis may assist in developing more targeted treatment interventions for knee joint instability secondary to ACL rupture.

• 대한인간공학회지
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• 제31권1호
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• pp.109-116
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• 2012

Objective: The aim of this study is to present a solution to problems in the services provided by the general hospitals by creating a user-centric environment through analyzing the User Journey Map and the User Context. Background: The rapid growth in aging population and the monopolization of superior medical staffs by the general hospitals increased demand for the general hospitals in Korea. But, often services provided by the general hospitals are provider-centric and low quality. Method: This study examines problems in the services provided by the general hospitals by analyzing the User Journey Map through stakeholder interviews(contextual interviews) and on-site observation. Based on the contextual analysis of the user(i.e. the patient), this study proposes new and improved user-centric services to be provided by the general hospitals. Results: Ten new user-centric services proposed by this study are: (1) "Booklet on Success Story", (2) "FAQs by Doctor", (3) "Designated Nurse", (4) "Patient Interview Record Card", (5) "Close relationship between doctor & patient", (6) "Thank You Notice Board", (7) "Step by Step", (8) "Green Cap", (9) "Patient Kit", (10) "RFID Direction Display System". Conclusion: The service design for the general hospitals proposed by this study is an important case-study on improving the environment of the general hospitals from provider(medical staffs)-centric to user(patents and its family)-centric. Application: This study is expected to be used in various areas to improve existing system(products and/or services) to be more user-centric.

• 한국게임학회 논문지
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• 제11권2호
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• pp.151-159
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• 2011

노년시대를 대비하는 기능성 게임의 교과목을 개발하기 위하여 인문대학과 공과대학의 관련학과 학생들을 대상으로 연구진의 교과 항목들에 대해 중요성과 필요성에 대한 설문을 조사하였다. 양 대학의 학생들의 인지에 대한 공통점과 차이점을 분석하여 이를 토대로 융합 학제간 신 교과목을 개발하였다. 노인용 기능성 게임의 인식을 학생들에게 확산시키고자 본 교과목을 양대학의 교과과정에 포함시켜 시행하였다.