• Title/Summary/Keyword: Evaluation principle

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Efficacy Evaluation of Anti-wrinkle Products in Japan

  • Masaki Hitoshi
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.29 no.2 s.43
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    • pp.67-77
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    • 2003
  • Two categories of cosmetic products, cosmetics and quasi-drugs, have been established by the Ministry of Health, Labor and Welfare (MHLW) in Japan. Japanese pharmaceutical law has defined that products categorized as cosmetics do not exhibit any effects on human skin. In fact, cosmetic products are not permitted to claim any efficacy. On the other hand, products in the quasi-drug category can claim several efficacies such as anti-inflammatory effects, whitening/lightning effects, hair growth effects and so on. Unfortunately, the Japanese MHLW has not yet approved the efficacy of anti-aging/anti-wrinkle effects as a claim point. However, the population is aging, and the demand for anti-aging/anti-wrinkle products is increasing year by year. Japanese cosmetic companies have proposed to the MHLW that anti-aging/anti-wrinkle agents be approved as a claim concept of a quasi-drug. However, unified evaluation methods for anti-aging/anti-wrinkle effects have not been established. Currently, each company evaluates the efficacy of products/materials using their own original methods. Thus, to request approval of the MHLW, the establishment of a unified evaluation method is needed. Consequently, the Japan Cosmetic Industry Association (JCIA) has established a task force to develop guidelines for evaluating anti-wrinkle effects in 1998. In conclusion, the JCIA would like to adopt visual and image analysis scales to evaluate the anti-wrinkle effects objectively. Generally, wrinkles are roughly classified into three groups as fine wrinkles, linear deep wrinkles and crow's feet. However, academic societies of dermatology or cosmetics have not yet established a definition of wrinkles in Japan. Thus, in advance of setting up an evaluation method, the definition of wrinkles f3r evaluation must be decided. Wrinkles are defined by the task force of the JCIA as follows; furrows that people can recognize visually and that appear on the forehead, the corners of the eyes and the backs of the neck with aging. In addition, furrows are emphasized by exposure to solar light and by dry conditions. Visual evaluation is the most sensitive method and can be applied to most types of wrinkles. However, visual evaluation is hard to express digitally as results. Besides, in the case of image analysis, comparisons of data obtained from distinct examinations can not be done, because data from image analysis are relative values. Thus, to enhance the reliability of the evaluations, the adoption of an objective scale was required. The principle of the evaluation method is to analyze images taken from silicone replicas of wrinkle areas using several parameters, such as the proportion of the wrinkle $area({\%})$, the mean depth of the wrinkles (mm), the mean depth of the deepest wrinkle (m) and the deepest point on the deepest wrinkle. Lights are shown on the skin replica from an orthogonal direction of the main orientation of the wrinkle, and the resulting shadow images are quantified by the image analysis method. To increase the precision of the data or to allow comparisons of independent examinations, a scale with furrows of several depths, 200, 400, 600, 800, and $1000{\mu}m$, is adapted in the evaluation system. I will explain the guidelines established by the JCIA in the presentation.

Asset Evaluation Method for Road Pavement Considering Life Cycle Cost (생애주기비용을 고려한 도로포장의 자산가치 평가에 대한 연구)

  • Do, Myungsik;Kim, Jeunghwan
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.29 no.1D
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    • pp.63-72
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    • 2009
  • This study aims at establishing the decision-making support system for the highway assets, long-term performance presumption and evaluation of asset value, which are appropriate for Korea, and proposing the methods of the optimal engineering method and the timing decision for the preventive maintenance through the project evaluation, the optimization method and life-cycle analysis related to the highways. In order to supplement the current problem of the near-sighted budget management system, which chooses the maintenance place of the highway, depending on the level of the budget with fixed amount, the long-term required budget prediction system and the economy principle were introduced, so that the pavement agency can predict the level of the required budget, and it was aimed to develop the pavement asset evaluation system to maintain the performance of the highway with the minimum of the cost. In the use of the highway pavement asset evaluation system, to maintain the appropriate level of the pavement evaluation index, when the budget was efficiently established in the reference of the required maintenance budget for the chosen section of the highway in the year concerned, it was possible to analyze the most rational pavement maintenance budget. With this result, it is estimated to prevent the unnecessary waste of budget in advance, and through the development of the decision-making system for the long-term performance presumption and the asset value estimation of the pavement, it is expected to able to analyze the previous evaluation of the project related to the highway and the feasibility of introduction.

Study on structural damping of aluminium using multi-layered and jointed construction

  • Nanda, B.K.;Behera, A.K.
    • Structural Engineering and Mechanics
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    • v.20 no.6
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    • pp.631-653
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    • 2005
  • In this work, the mechanism of damping and its theoretical evaluation for layered aluminium cantilever structures jointed with a number of equispaced connecting bolts under an equal tightening torque have been considered. Extensive experiments have been conducted on a number of specimens for comparison with numerical results. Intensity of interface pressure, its distribution pattern, dynamic slip ratio and kinematic coefficient of friction at the interfaces, relative spacing of the connecting bolts, frequency and amplitude of excitation are found to play a major role on the damping capacity of such structures. It is established that the damping capacity of structures jointed with connecting bolts can be improved largely with an increase in number of layers maintaining uniform intensity of pressure distribution at the interfaces. Thus the above principle can be utilized in practice for construction of aircraft and aerospace structures effectively in order to improve their damping capacity which is one of the prime considerations for their design.

Stability of beck's column with a rotatory spring restraining its free end (자유단이 회전스프링으로 구속된 Beck 기둥의 안정성)

  • Yun, Han-Ik;Im, Sun-Hong;Yu, Jin-Seok
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.21 no.9
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    • pp.1385-1391
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    • 1997
  • An analysis is presented on the stability of an elastic cantilever column subjected to a concentrated follower force as to the influence of the elastic restraint and a tip mass at the free end. The elastic restraint is formed by the rotatory springs. For this purpose, the governing equations and boundary conditions are derived by using Hamilton's principle, and the critical flutter loads and frequencies are obtained from the numerical evaluation of the eigenvalue functions of the considered system.

Curcuma longa: A treasure of medicinal properties

  • Ansar, Saba;Jilani, Shazia;Abbasi, Hana;Siraj, Mantasha binth;Hashimi, Ayshah;Ahmed, Yasmeen;Khatoon, Rizwana;Rifas, AL Mohd.
    • CELLMED
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    • v.10 no.2
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    • pp.9.1-9.7
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    • 2020
  • Nature is full of precious treasure to cure us from various disorders. One of them is Curcuma longa belonging to Zingiberaceae family, present with outstanding therapeutic value and used since time immemorial. Part used from the plant is rhizome native to India (south east continent) which is the world's largest producer, consumer and exporter of turmeric. The active principle called curcumin or diferuloylmethane is a yellow pigment that exhibits numerous activities and wide spectrum of biological actions which include anti-inflammatory, hepatoprotective, anti-cancerous, anti-fungal, neuroprotective activities and many more. This paper focuses on the comparative evaluation of medicinal properties of Curcuma longa as mentioned in Unani classical literature with its modern scientific researches.

A Scheme on Supported Software for Fuzzy Controller Design (퍼지제어기 설계재원을 위한 소프트웨어 구성)

  • An, Young-Joo;Hong, Soon-Ill;Kim, Chel-U;Hwang, Young-Moon
    • Proceedings of the KIEE Conference
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    • 1991.07a
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    • pp.717-719
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    • 1991
  • In this paper, the basic principle and theory of fuzzy control was discribed, and the control plant was estabilished to construct system. Computer software for fuzzy control was developed, and evaluation of the properties was performed by simulation. In this result, the speed of response(time constant + dead time) was investigated, and when the control plant has astable elements, the stabilization was discribed.

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Computerized Railway Alignment Evaluation and Construction Quantity Estimation (궤도선형 계산 및 수량 산출 프로그램 개발)

  • Jee Sang Bok;Lee Tai Sik;Lee Dong Wook
    • Journal of the Korean Society for Railway
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    • v.8 no.4
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    • pp.379-384
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    • 2005
  • To maintain the stability during the operation of railway vehicle, the perfect installation of rail, namely the orbit as well as the performance of the railway vehicle itself is required. The orbit of railway needs the intensity and elasticity that stands the shock and vibration due to the weight of the railway vehicle enough, Also, the driving safety during the operation of vehicle should be guaranteed, comfortable feeling of the passenger should be maintained, and the influence of the noise and vibration to the environs should be minimized. Therefore, it is necessary to develop a program that calculates the change of construction cost according to the selection of railway orbit. This study introduces the orbit design automation program according to the selection of railway orbit, and discuss the principle and the way to use of the program.

Measurement of III-V Compound Semiconductor Characteristics using the Contactless Electroreflectance Method

  • Yu, Jae-In;Choi, Soon-Don;Chang, Ho-Gyeong
    • Journal of Electrical Engineering and Technology
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    • v.6 no.4
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    • pp.535-538
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    • 2011
  • The electromodulation methods of photoreflectanceand the related technique of contactless electroreflectance(CER) are valuable tools in the evaluation of important device parameters for structures such as heterojunction bipolar transistors, pseudomorphic high electron mobility transistors, and quantum dots(QDs). CER is a very general principle of experimental physics. Instead of measuring the optical reflectance of the material, the derivative with respect to a modulating electric field is evaluated. This procedure generates sharp, differential-like spectra in the region of interband (intersubband) transitions. We conduct electric-optical studies of both GaAs layers and InAs selfassembled QDs grown by molecular beam epitaxy. Strong GaAsbandgap energy is measured in both structures. In the case of lnAs monolayers in GaAs matrices, the strong GaAsbandgap energy is caused by the lateral quantum confinement.

Unification through Similarity' as a Design Principle for Achieving Harmony in an Architectural Design (건축적 조화를 위한 디자인 방법론 -유사성에 의한 통일성을 중심으로-)

  • Choo Seung-Yeon
    • Journal of the Korean housing association
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    • v.15 no.4
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    • pp.9-16
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    • 2004
  • Architectural theories in western architecture have been considered as a basis for answering the fundamental questions of architectonics: proportion, symmetry, color, harmony and so on. Among those the architectural design theory is significant, since it affects the aesthetic evaluation of human perception. This paper gives an outline in applying the traditional design principles of architecture to contemporary architecture by 'unification through similarity' of architectural components such as form, scale, texture and color. As we see from this research, unification can be achieved in a design by the combination of the four components; that is, to balance between the four above-mentioned components in buildings, through the similarity of one or more of these components.

Evaluation of Power Generation of Hybrid Energy Harvesting Blocks applying the Piezoelectric Effects and Electromagnetic Induction Principle (압전 및 전자기 유도 기술을 적용한 하이브리드 에너지수확 블록의 발전량 평가)

  • Noh, Myung-Hyun;Lee, Sang-Youl
    • Proceedings of the KAIS Fall Conference
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    • 2012.05b
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    • pp.734-737
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    • 2012
  • 에너지하비스팅이란 도시와 자연 환경 속에 상시 존재하지만 진동, 열, 빛 등과 같이 버려지는 에너지 소스로부터 전기를 수확하는 것으로 대용량 발전소와는 다른 신개념의 전기 수확 기술이다. 본 연구에서는 다양한 에너지 하비스팅 기술들 중에서 압전 원리와 전자기 유도 방식을 조합한 하이브리드 에너지 하비스팅 블록에 대한 발전량을 평가하여 에너지 하비스팅 블록의 주택 도시 분야 적용 가능성을 검토하고자 하였다. 이를 위해 랩스케일 PZT 기반 다층 에너지 하베스터의 현 발전량을 평가하여 제시하였고, 증폭기술을 적용하여 개발된 에너지 블록의 발전성능을 다각적으로 평가하여 제시하였다. 또한 개발된 에너지 블록과 기존 상용 제품과의 발전성능 비교 실험을 수행하여 개발된 에너지 블록의 우수성을 입증하였다.

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