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Alternative tactile sensor for measuring rehabilitation study using to neural network (신경망을 적용한 재활훈련 측정용 대체 촉각 센서 연구)

  • Lim, Seung-Cheol;Jin, Go-Whan
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.12 no.4
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    • pp.23-29
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    • 2012
  • Injured peoples usually care their body at medical institutions. But if they need some more rehabilitation to the affected area thus exist. These medical institutions according to the scale there are significant differences in rehabilitation programs, most of the small-scale rehabilitation program for medical doctors and patients to be progression of the conversation is an issue. In this paper, in a small medical facility rehabilitation to assist in the accuracy and reliability, physical contact and force sensors that can measure a combination of substitution and the tactile sensor and tactile sensor alternative with a similar function is proposed. Perceptron neural networks by applying the contact evaluation according to the algorithm to determine the pattern is applied.

A Study of Power Inductor for Slim Mobile Communication Set (휴대용 이동 통신기기의 슬림화를 위한 전력용 인덕터의 연구)

  • Kim, Du-Il;Seo, Jong-Go;Kim, Sung-Il;Uhm, Jae-Hyun;Jung, Jin-Hwee;Lee, Hea-Jong
    • Proceedings of the KIEE Conference
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    • 2005.11a
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    • pp.48-50
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    • 2005
  • As technology is developed, customers want to use many functions in one system. Manufacturers want to reach the customer's needs, make systems more small, thin, light-weight. To make them real, it is necessary to make components to be small and thin. But components of power stage are big, thick and heavy-weighted yet. especially power inductor is the most significant component. This paper proposed a novel chip-type power inductor I-type inductor. Inductor that proposed has 3225-size, 5.6uH and 1.3A of max saturation current. And it has $R_{DC}$ of $0.25{\Omega}$ which is smaller than $0.45{\Omega}$ of chip-type inductor and $0.9{\Omega}$ of coil-type inductor.

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Analysis of a small steam injected gas turbine system with heat recovery (열회수를 고려한 소형 증기분사 가스터빈 시스템 해석)

  • Kim, Dong-Seop;Jo, Mun-Gi;Go, Sang-Geun;No, Seung-Tak
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.21 no.8
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    • pp.996-1008
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    • 1997
  • This paper describes a methodology and results for the analysis of a small steam injected gas turbine cogeneration system. A performance analysis program for the gas turbine engine is utilized with modifications required for the model of steam injection and the heat recovery steam generator (HRSG). The object of simulation is a simple cycle gas turbine engine under development which adopts a centrifugal compressor. The analysis is based on the off-design operation of the gas turbine and the compressor performance map is utilized. Analyses are carried out with the injection ratio as the main parameter. The effect of steam injection on the power and efficiency of gas turbine and cogeneration capacity is investigated. Also presented is the variation in the main operating parameters inside the HRSG. Remarkable reduction in NOx generation by steam injection is confirmed. In addition, it is observed that for the 100% power operation the temperature of the cooled first nozzle blade decreases by 100.deg. C at full steam injection, which seems to have a favorable effect on the engine life time.

Identification and Function Prediction of Novel MicroRNAs in Laoshan Dairy Goats

  • Ji, Zhibin;Wang, Guizhi;Zhang, Chunlan;Xie, Zhijing;Liu, Zhaohua;Wang, Jianmin
    • Asian-Australasian Journal of Animal Sciences
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    • v.26 no.3
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    • pp.309-315
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    • 2013
  • MicroRNAs are a class of endogenous small RNAs that play important roles in post-transcriptional gene regulation by directing degradation of mRNAs or facilitating repression of target gene translation. In this study, three small RNA cDNA libraries from the mammary gland tissues of Laoshan dairy goats (Capra hircus) were constructed and sequenced, individually. Through Solexa high-throughput sequencing and bioinformatics analysis, we obtained 50 presumptive novel miRNAs candidates, and 55,448 putative target genes were predicted. GO annotations and KEGG pathway analyses showed the majority of target genes were involved in various biological processes and metabolic pathways. Our results discovered more information about the regulation network between miRNAs and mRNAs and paved a foundation for the molecular genetics of mammary gland development in goats.

Does Bribery Sand the Wheels? New Evidence from Small and Medium Firms in Vietnam

  • NGUYEN, Toan Ngoc
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.4
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    • pp.309-316
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    • 2020
  • This research aims to revisit the hypothesis that bribery hurts firm performance in the context of a perceptibly corrupt country. Specifically, we use micro-data from Vietnamese small and medium firm surveys in 2013 and 2015 to examine whether bribery impedes firm revenue growth and labor productivity growth. An issue arising in this type of research is the potential endogeneity between firm bribing behaviors and firm performance. To go around the issue, we follow the literature to instrument bribery variable with the average probability of bribery in other provinces. We further employ the Analysis of Variance technique (ANOVA) to unveil if the effect of bribery is dependent on bribing purposes. The regression results show that firm performance is significantly influenced by firm size, firm age and firm bribing behavior. Larger firms are more likely to grow faster while firm performance tends to be negatively related to firm age. Particularly, we find that bribery significantly impedes firm revenue growth and labor productivity growth. The analysis of variance shows that the effect of bribery on firm performance may vary across bribing purposes. Our findings, therefore, support the sand-the-wheels hypothesis that bribery hurts firm performance even in a highly corrupt business environment.

논산지역 간이급수시설 수질특성에 대한 연구

  • Go Gyeong-Seok;Lee Jin-Su;Kim Tong-Gwon;Kim Jae-Gon;Jo Seong-Hyeon;Seok Hui-Jun;Kim Hyeong-Su
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 2005.04a
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    • pp.344-347
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    • 2005
  • The purpose of the study for the development of the technologies of water quality monitoring and contamination protection at water resource aquifer is to secure the groundwater as potable water resources. The results of water analysis as a basis of potable water criteria showed that 30 groundwater samples among 138 samples of small water supply system (21.7%) were exceeded the water criteria. The concentrations of Cl, $NO_3$ and Na for granite area are higher than those of gneiss and metasedimentary rocks of Ogcheon belt area and they are caused by the high vulnerability of groundwater at granite region where the residential area and cultivated land are concentrated. The spatial distribution of components indicated the close relationships between water quality and geology, land use, and topography. The multivariate statistical results showed that the water samples are divided into three groups by geology.

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Research about the cooling of a small size rocket nozzle (소형로켓 노즐의 냉각에 관한 연구)

  • Go, Tae-Sig;Shim, Jin-Ho
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • 2007.04a
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    • pp.365-369
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    • 2007
  • The solid rocket interacts circumscriptively in terms of is many more than liquid rocket. It is uncontrollable than liquid rocket because all part of combustion is decided such as Mixture ratio of propellant, burning time and area. However, production cost is cheap and because authoritativeness security can be easy and enlarge the early speed that follow thrust-to-weight ratio, it is used comprehensively by small size rocket. Considered about nozzle cooling to control phenomenon that burn by thermal conduction in interior wall of nozzle that follow in thrust increase of solid rocket and erosion phenomenon by combustion gas of high speed.

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Automatic Stair-Climbing Algorithm of the Planetary Wheel Type Mobile Robot in Nuclear Facilities (원자력시설내에서의 유성차륜형 이동로보트의 자동계단 승월기법)

  • Kim, Byung-Soo;Kim, Seung-Ho;Lee, Jongmin
    • Nuclear Engineering and Technology
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    • v.27 no.5
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    • pp.661-669
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    • 1995
  • A mobile robot, named KAEROT, has been developed for inspection and maintenance operations in nuclear facilities. The main feature of locomotion system is the planetary wheel assembly with small wheels. This mechanism has been designed to be able to go over the stairs and obstacles with stability. This paper presents the inverse kinematic solution that is to be operated by remote control. The automatic stair climbing algorithm is also proposed. The. proposed algorithms generates the moving pathes of small wheels and calculates the angular velocity of 3 actuation wheels. The results of simulations and experiments are given for KAEROT peformed on the irregular stairs in laboratory. It is shown that the proposed algorithm provides the lower inclination angle of the robot body and increases its stability during navigation.

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Active GNSS Antenna Implemented with Two-Stage LNA on High Permittivity Substrate

  • Go, Jong-Gyu;Chung, Jae-Young
    • Journal of Electrical Engineering and Technology
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    • v.13 no.5
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    • pp.2004-2010
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    • 2018
  • We propose a small active antenna to receive Global Navigation Satellite System (GNSS) signals, i.e., Global Positioning System (GPS) L1 (1,575MHz) and Russian Global Navigation Satellite System (GLONASS) L1 (1,600 MHz) signals. A two-stage low-noise amplifier (LNA) with more than 27 dB gain is implemented in the bottom layer of a three-layer antenna package. In addition, a hybrid coupler is used to combine signals from pair of proximately coupled orthogonal feeds with $90^{\circ}$ phase difference to achieve the circular polarization (CP) characteristic. Three layers of high permittivity (${\varepsilon}_r=10$) substrates are stacked and effectively integrated to have a small dimension of $64mm{\times}64mm{\times}7.42mm$ (including both circuit and antenna). The reflection coefficient of the fabricated antenna at the target frequency is below -10 dB, the measured antenna gain is above 26 dBic and the measured noise figure is less than 1.4 dB.

Operational Resilience and Human Capital Toward Corporate Sustainable Longevity in Indonesian "Jamu" Industry

  • IRAWAN, Dadang;PRABOWO, Harjanto;KUNCORO, Engkos Achmad;THOHA, Nurianna
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.3
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    • pp.1035-1044
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    • 2021
  • Corporate longevity is an interesting issue from a theoretical point of view. In today's uncertain economic climate, the first priority for a company is survival. The longevity of an organization is basically one of the areas that can classify the sustainability of a company. Known as the cultural heritage of Indonesia, the traditional herbal medicine industry faces challenges of longevity. The word Jamu is a generic expression for traditional herbal medicine in Indonesia. The Jamu industry as Indonesia's cultural heritage must be preserved with good support from a technical, regulatory, and commercial perspective so that Jamu companies do not go into the decline stage. Operational resilience is usually defined as the ability of an organization to adapt rapidly to changing environments. This study aims to identify the effect of operational resilience and human capital on corporate sustainable longevity through innovation performance. The questions are addressed through empirical research of 108 small companies that produce Jamu, traditional herbal medicine in Java, Indonesia. This study was conducted during July-September 2020. Data analysis is carried out with SEM-PLS using SmartPLS software version 3.0 to evaluate the data collected. The results indicated that operational resilience influences corporate sustainable longevity directly and indirectly through innovation performance. However, human capital could not play the antecedent role to corporate sustainable longevity directly or even indirectly through innovation performance. Human capital indicators require deeper exposure in the context of small industries.