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J.M. Keynes의 Normal Psychological Law에 關하여
張晙昊 西原大學校 1972 西原大學 論文集 Vol.1 No.-
The purpose of this note is to exclusive general falling into anerrors on J.M. Keynes'Normal Psychological Law and to find out not only its essential qualities, through comprehensive analysis of consumption function controversy, the formation of which in 1938 was much debated by E.W. Gilboy, Acheson J. Duncun and J.M. Keynes, but also the co-relation between keynes, law, Albin H, Hansen's criticism and Dynamic consumption Function Theory of James S. Duesenberry style; The contents of this note are shown as follows; The first chapter deals with Introduction The second chapter deals with Definition of J.M. Keynes' Normal Psychological Law; If ?? is the amount of consumption and ?? is income(both measured in wage units) ?? has the same sign as ?? but is smaller in amount, ie;?? is positive and less than unity. The third chapter deals with Normal Psychological Law Controversy. (a) E.W. Gilboy's criticism; he regarded Keynes' Psychological Law as follows. Keynes' N.P. Law=ε<1 ε=Elasticity of expenditure dependent on income (b) E.W. Gilboy, A.J. Duncun and J.M.Keynes' debate The fourth chapter deals with Essential Qualities of Normal Psychological Law. In cast of ΔE Y ΔE Y a) ε>1, -----·--- >1 ∴----- > --- ΔE E ΔY E , ΔE Y ΔE E b) ε=1, -----·--- =1 ∴----- = --- and ΔY E ΔY Y , ΔE Y ΔE E c) ε<1, -----·--- <1 ∴----- < --- ΔY E ΔY Y , E.W. Gilboy thought of only the case of c) as Keynes, Psychological law, By the way, the concrete contents of Keynes' N.P.Law is ΔC 1> ----->0 or ΔY>ΔC ΔY C ΔC C A. line, ---=-----=1, ----1……constant Y ΔY Y ΔC C B. line, -----<1(constant), ---……decreasing ΔY Y ΔC C C. line, ----->1(constant), ---……decreasing ΔY Y C ΔC D. line, ---=-----<1(constant) Y ΔY ΔC C E. line, ----->1(constant), ---……Increasing ΔY Y ΔC Keynes' -----<1 does not mean pointing any case of 「constant」, 「decreasing ΔY ΔC 」, and 「increasing」of ----- , but observing smaller condition than 1 in ca ΔY se of B and D consumption function line. The fifth chapter deals with some Conclusive words. Keynes' Psychological law is entirely right in static consumption function, but it is said that the rule is always not right in dynamic consumption function which is called long-term secular consumption function. ΔC But it is true that 「constant」of ----- in long-term secular consumption fun ΔY ction is not contradictory to the essential meaning of Keynes' psychological law in the general.
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Optimization of green closed loop supply chain network considering recycling express box
장준호,차금요 한국디지털정책학회 2022 디지털융복합연구 Vol.20 No.5
This paper proposes a green closed-loop supply chain network (GCSN) for optimizing closed-loop supply chains. The GCSN focuses on the application of the recycling express box in logistics circulation, accelerates the standardization of logistics operations and the use of express packaging in e-commerce companies, and promotes the reduction and greening of recycling express box in the e-commerce industry. The GCSN is represented as a mathematical formulation and implemented using LINGO. Greening, environmental protection, and wisdom are the general trends for promoting the growth of the e-commerce industry. Meanwhile, the price of raw materials has increased owing to a shortage of resources, which emphasizes the need for e-commerce enterprises to develop green packaging. Therefore, this study considers the shared circular packaging launched by e-commerce enterprises as the research object, and integrates the problem of facility positioning and path planning in the logistics system. The conclusion summarizes the significance of this study.
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Unexpected Enormous Triboelectric Power Increase by Photo-Crosslinking of Thermoplastic Film
장준호,김진곤 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
Triboelectric nanogenerator (TENG), which can generate power with a simple touch as a next-generation wearable power source, is drawing attention. Among various methods to improve the power of TENG, the irradiation of ultraviolet (UV) is simple, non-expensive, and highly scalable process. Here, we introduce the effect of molecular structure on TENG using UV irradiation for two types of thermoplastic block copolymers (BCs); saturated and unsaturated. The voltage of saturated BCs increased up to 15 times compared to before UV. The contact charge is analyzed by the surface potential and dielectric constant. When charging the capacitor, saturated BCs irradiated by UV shows 16 times higher efficiency than before UV. It is confirmed that it can be successfully applied to the stretchable tactile sensor. Since the UV irradiation area can be easily controlled, the number of pixels and wiring of the sensor can be significantly reduced compared to the amount of information.
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장준호,장광석 한국구조물진단유지관리공학회 2009 한국구조물진단유지관리공학회 논문집 Vol.13 No.4
분사식 FRP 보강 공법은 섬유(Fiber)와 수지(Resin)를 외부에서 혼합하여 요철이 많은 콘크리트 표면에 고속의 압축 공기로 랜덤하게 분사하여 기존 콘크리트 구조물을 보강하는 공법이다. 새로운 분사식 FRP 공법을 이용하여 구조물의 보강 성능을 평가하였다. 콘크리트 보 실험체에 대한 휨강도 실험을 수행하여 분사식 FRP의 최적물성치를 찾고 이 결과를 이용하여 PSC I형 거더 표준단면을 1/5로 축소한 구조물에 적용하여 실험을 하였다. 손상된 프리스트레스트 콘크리트에 적용한 결과 무보강보에 비하여 휨강도가 49.8% 증가하였고 사용상태의 거동이 개선되었으며, 보강에 의해 처짐 및 균열 제어에 효과적이었다. 결론적으로 분사식 FRP 공법의 보강 적용은 구조물의 성능 향상에 효과적이라고 할 수 있다. The sprayed FRP strengthening technique is combining the Glass fiber and Polyester resin in open air and spraying randomly at concrete’s surface with high-speed compressed air. Then it strengthens the structures with a new technique evaluated the structural performance. We applied it to concrete beam and tested for flexural strength, depended on Korea Standard(KS F 2408). Then based on the result of flexural strength, the properties were proposed that applying to structures. Based on the experiment, we have evaluated structural performance by the experiment. 1/5 scale prestressed concrete I-beam were made by Korean Highway’s typical drawing in 1993. With these test results, 49.8% increased in flexural strength, improvement of the behavior of serviceability state, and strengthening was surely effective for controlling deflection and crack of structure. Consequently, it can be summarized that Sprayed FRP technique has prospect to improve the performance of structure.
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장준호,박장운,유희천 대한인간공학회 2007 대한인간공학회 학술대회논문집 Vol.- No.-
동작 분석을 이용한 인간공학적 제품 평가 방법이 개발되고 있으나, 기존의 평가 방법은 신체부위의 관절 각도 분석에만 전문화되어 있어 제품 사용에서 중요한 동작 패턴은 고려하지 못하는 실정이다. 본 연구는 제품 사용 동작의 각도 범위 외에도 제품 사용시 신체 부위의 이동궤적 분석을 통해 제품을 평가하는 방법을 개발하였다. 개발된 동작 분석 방법은 제품 Physical User Interface(PUI) 특성 분석과 동작 측정, 동작 분석의 3 단계로 구성된다. 먼저, 제품 PUI 특성 분석에서는 제품의 구성 설계 요소, 사용 환경, 사용 작업을 이해하게 된다. 그리고, 제품사용 동작 분석에서는 제품 사용 동작과 자연스러운 동작을 측정하고, 신체 관절의 움직임 각도와 궤적을 산출하여 제품의 사용성을 평가한다. 본 연구에서 제안된 동작 분석 방법은 제품의 PUI 평가시 유용하게 활용될 수 있을 것이다.
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