• The Journal of Korean Physical Therapy
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• 제15권1호
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• pp.61-81
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• 2003

There can be little dissension that the ultimate goal of all physical therapy interventions with the elderly is to restore or maintain the highest level of function possible for the individual. Whenever physical therapists take on this challenge, they assist elders in maintaining their identities as competent adults. Advancing age is associated with profound changes in body composition, including increased fat mass, decreased fat-free mass(particularly muscle), decreased total body water and decreased bone density. Along with these changes in body compositions, and perhaps as a direct result of them, elderly people have lower energy needs, reduced strength and functional capacity and a greatly increased risk for such diseases as noninsulin-dependent diabetes mellitus and osteoporosis. Resistance training is considered a promising intervention for reversing the loss of muscle function and the deterioration of muscle structure that is associated with advanced age. This reversal is thought to result in improvements in functional abilities and health status in the elderly by increasing muscle mass, strength and power and by increasing bone mineral density. In the past couple of decades, many studies have examined the effects of Resistance training on risk factors for age-related diseases or disabilities. We have explored the positive and negative aspects of older adults' participation in resistance training programs. The benefits to older adults are reported to be increased strength, endurance, muscle capacity, and flexibility; more energy; and improved self-image and confidence. The negative aspects include some pain or stiffness and other nonspecific problems. The positive and negative aspects of resistance training are therefore very similar to those in younger populations. Scientific investigations over the past 10 years have demonstrated that resistance training can be safely and successfully implemented in older populations. Even the frail and very sick elderly can benefit and improve their quality of life. Proper design and progression of a resistance training program for older adults is vital to optimal benefits from resistance exercise. The results of data provided by this research on resistance training for health shows that there is enough existing evidence to conclude that resistance training, particularly when incorporated into a comprehensive fitness program, can offer substantial health benefits which can be obtained by persons of all ages. These benefits, including improvements in functional capacity, translate into an improved quality of life.

• 디지털융복합연구
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• 제13권10호
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• pp.107-120
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• 2015

본 연구는 융 복합 시대에 조직에서 빈번히 발생하는 갈등관리 방안을 다루며, 특히 리더 감독 유형에 따른 종업원의 저항을 밝히고자 한다. 이를 위해, 리더 감독 유형을 지원적 리더와 통제적 리더로 분류하였으며, 갈등의 결과로써 나타나는 종업원 저항행위도 기능적 저항과 역기능적 저항으로 분류하였다. 또한, 심리적 계약위반을 정서와 인지 차원으로 구분하여, 매개효과를 분석하고자 하였다. 분석 결과는 다음과 같다. 첫째, 지원적 리더 행위는 조직 내에서 발생하는 갈등의 결과를 기능적 저항으로 이끌어 내며, 반면에 통제적 리더 행위는 갈등의 결과를 역기능적 저항으로 발생시킨다. 둘째, 지원적 리더 행위는 종업원에게 정서차원의 심리적 계약 위반을 덜 인식하게 하지만, 통제적 리더는 심리적 계약 위반을 인식하게 하는 것으로 나타났다. 셋째, 지원적 리더는 조직 내의 갈등을 긍정적인 방향으로 해결하여, 종업원으로 하여금 조직내 갈등을 인식하지 못하게 하는 것으로 나타났다. 이러한 결과는 이론적 실무적으로 기여하는 바가 클 것으로 사료된다.

• 한국정보시스템학회지:정보시스템연구
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• 제20권2호
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• pp.57-80
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• 2011

This study analyzed the effects of smart phone using for business on work performance in the field. We classified functional and practical aspects of smart phone affecting employee's work performance through former studies. As independent variables, we selected portability of equipment, rapidity of information and ease of use for functional side, and selected fit to work and subjective norms for practical side. And dependent variable was work performance. We also suggested that innovation resistance would be a moderator. The results showed that the effect of work performance was influenced by portability of equipment and fit to work. However, hypotheses on moderating effects of innovation resistance were not supported. This study made a discrimination in terms of an application phase of smart phone as against former studies. The results of this study will provide practical implications for related enterprises in the field to develop ways of using smart phone as an effective strategy.

• 한국군사과학기술학회지
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• 제16권4호
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• pp.553-559
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• 2013

We make several membranes with multilayer structure and characterize protective performance in various ways. Multilayer membrane is composed of shell fabric, support membrane, functional polymer membrane and liner fabric. In this research, we apply cellulose acetate derivatives as base polymer in functional polymer membrane and characterize water resistance, water vapor permeation, protective performance against DMMP and aerosol. Test results show that cellulose based polymer with polyethyleneimine possess performance with good water vapor permeation and excellent protective capability against DMMP equivalent to Saratoga type's protective suits. Also, these materials possess aerosol protective performance and water resistance.

• Corrosion Science and Technology
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• 제14권5호
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• pp.213-217
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• 2015

Recently, household electronic industries require environmentally-friendly and highly functional steels in order to enhance the quality of human life. Customers especially require both excellent corrosion and abrasion resistant anti-fingerprint steels for digital TV panels. Thus POSCO has developed new functional electro-galvanized steels, which have double coated layers with organic-inorganic composites on the zinc surface of the steel for usage as the bottom chassis panel of TVs. The inorganic solution for the bottom layer consists of inorganic phosphate, magnesium, and zirconium compounds with a small amount of epoxy binder, and affords both improved adhesion properties by chemical conversion reactions and corrosion resistance due to a self-healing effect. The composite solution for the top layer was prepared by fine dispersion of organic-inorganic ingredients that consist of a urethane modified polyacrylate polymer, hardener, silica sol and a titanium complex inhibitor in aqueous media. Both composite solutions were coated on the steel surface by using a roll coater and then cured through an induction furnace in the electro-galvanizing line. New anti-fingerprint steel was evaluated for quality performance through such procedures as the salt spray test for corrosion resistance, tribological test for abrasion resistance, and conductivity test for surface electric conductance regarding to both types of polymer resin and coating weight of composite solution. New composite coated anti-fingerprint steels afford both better corrosion resistance and abrasion properties compared to conventional anti-fingerprint steel that mainly consists of acrylate polymers. Detailed discussions of both composite solutions and experimental results suggest that urethane modifications of acrylate polymers of composite solutions play a key role in enhanced quality performances.

• Journal of Information Technology Applications and Management
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• 제10권1호
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• pp.47-59
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• 2003

This study analyses the level of resistance which workers have against the adoption of ERP systems and the factors affecting the resistance to the adoption of the new systems. The major results of the study include 1) about 40% of workers showed resistance to the adoption of ERP systems, and 2) all six factors (technical characteristics of ERP system, functional characteristics of ERP system, implementation approach, task changes caused by the adoption of ERP system, attitude toward change, and altitude toward organization) were proved to affect the resistance to the adoption of the ERP systems. In practice, adoption of ERP system brings significant changes to workers. In order for an organization to succeed, it is necessary to reduce the resistance of workers. Since this study is performed based on a case study, the results of the study may not be generalized. However, the results of the study may provide guidance which organizations can refer in the course of effective personnel management.

• Composites Research
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• 제28권6호
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• pp.333-339
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• 2015

무전해 도금을 통해 제조한 FeCo 자성 금속 중공형 섬유와 EPDM 고분자를 이용하여 전자파 차폐 복합재를 제작하였다. 열처리 공정을 통하여 섬유의 종횡비를 제어하였으며 중공형 구조로 섬유를 제조한 후, 이를 EPDM 수지에 첨가하여 복합재를 제조하였다. 자성 금속 중공형 섬유의 종횡비가 클수록 낮은 표면 저항 특성과 우수한 전자파 차폐 성능을 나타내었다. 약 $100{\mu}m$ 길이의 자성 금속 중공형 섬유를 이용한 두께 $150{\mu}m$ 전자파 차폐 복합재의 경우 밀도 $1.18g/cm^3$, 약 30 ohm/sq의 표면 저항, 그리고 30 dB의 전자파 차폐 성능을 나타내었다. 이는 종횡비가 큰 섬유에 의한 퍼콜레이션 임계치 이상의 전도성 네트워크 형성과 더불어, 낮은 표면 저항에 기인한 임피던스 차이에 의한 반사 손실 증가, 흡수 손실, 그리고 다중 내부 반사 손실에 의하여 우수한 전자파 차폐 성능을 나타내는 것으로 판단된다.

• 생태와환경
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• 제37권2호통권107호
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• pp.137-148
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• 2004

Merritt-Cummins의 체계에 기초하여 한국에 정리 ${\cdot}$ 보고된 수서곤충류(10목 96과 257속)를 6개 섭식기능군 유형의 분석과 검증을 실시하였다. 총 257개 속 가운데포식자인 섭식기능군이 122개 (47%)속으로 가장 많았으며, 두 번째와 세 번째로 높은 점유율을 나타낸 섭식기능군은 gathering-collectors(33개 속, 13%)와 shredders(21개 속,8%)로 나타났다. 그 다음으로는 Scrapers가 20개 (7%) 속으로 나타났으며, filtering-collectors (12개 속,5%)와 plant-piercers(6개 속, 2%)의 순으로 나타났다. 그러나 7개 목의 총 43개 속에 해당하는 분류군은 섭식기능군이 밝혀지지 않았다. 생물군집의 안정성을 유지하는데 있어 섭식기능군의 기능을 규명하기 위하여 속 수준에서의 상대적 저항력과 회복력이 분석되었다. 그 결과 섭식기능군 gathering-collectors와 scrapers는 군집 내에서 각각 개척자와 기능적 중간자로서의 역할을 수행하고 있음이 규명되었다. 상대적 저항력과 회복력의 등급화의 실질적은 적용은 하천생태계에 대한 포괄적인 연구의 수행에 높은 응용성을 지니는 것으로 분석되었다.

• 한국수산과학회지
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• 제54권5호
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• pp.733-741
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• 2021

Jeju island is the largest island of South Korea, and has a relatively warm climate due to its geographical characteristics. These features have fostered development of various fermented foods distinct to Jeju island. Therefore, the functional activity of the lactic acid bacteria (LAB) isolated from the Jeju region's traditional fermented foods, including Kimchi and Jeotgal was characterized in this study. Fifteen strains were isolated from 6 types of fermented food. These strains include Enterococcus spp., Lactoplantibacillus spp., and Weisella spp. Several experiments were carried out to assess functional characteristics including acid resistance, bile resistance, hemolysis, DPPH and ABTS radical scavenging activity, and cholesterol-lowering activity. Three isolated strains (J-4, J-6 and J-10) exhibited high acid resistance, while the other 3 isolates (J-1, J-4 and J-6) showed high bile salt resistance. The strains displayed varied DPPH and ABTS radical scavenging activity: 71.14-86.42% among the first 3 strains, and 50.11-75.11% among the remaining 3 strains. Cholesterol-lowering activities were in the range 15.74-82.90% for all isolated strains. In conclusion, these studies suggest that isolated LAB strains from Jeju island traditional fermented foods possess the potential for broader application in the food industry.

• Nuclear Engineering and Technology
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• 제55권2호
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• pp.523-529
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• 2023

Cemented uranium tailings backfill created from alkali-activated slag (CUTB) is an effective method of disposing of uranium tailings. Using some environmental functional minerals with ion exchange, adsorption, and solidification abilities as backfill modified materials may improve the leaching resistance of the CUTB. Natural zeolite, which has good ion exchange and adsorption characteristics, is selected as the backfill modified material, and it is added to the backfill materials with cementitious material proportions of 4%, 8%, 12%, and 16% to prepare CUTB mixtures with environmental functional minerals. After the addition of natural zeolite, the uniaxial compressive strength (UCS) of the CUTB decreases, but the leaching resistance of the CUTB increases. When the natural zeolite content is 12%, the UCS reaches the minimum value of 8.95 MPa, and the concentration of uranium in the leaching solution is 0.28-8.07 mg/L, the leaching rate R₄₂ is 9.61×10^-7 cm/d, and cumulative leaching fraction P₄₂ is 8.53×10^-4 cm, which shows that the alkali-activated slag cementitious material has a good curing effect on the CUTB, and the addition of environmental functional minerals helps to further improve the leaching resistance of the CUTB, but it reduces the UCS to an extent.