• Title/Summary/Keyword: Component development

Search Result 3,943, Processing Time 0.038 seconds

P2P Business Process Modeling Based on Service Oriented Architecture (SOA기반 P2P 비즈니스 프로세스 모델링)

  • Lee, Myung-Hee;Yoo, Cheol-Jung;Chang, Ok-Bae
    • Journal of the Institute of Electronics Engineers of Korea CI
    • /
    • v.45 no.2
    • /
    • pp.18-25
    • /
    • 2008
  • The traditional a roaches to software development, such as XP, UP, CBD and other CASE tools, are useful for constructing various software components. However, they are not designed to face the challenges of open environments that focus on service. The Service-Oriented Architecture(SOA) is a component architecture that interconnects an application's different functional units, called services. SOA provides a good way to integrate the business process through well-defined interfaces and contracts between business services. In this paper, we propose a method of business process modeling based on SOA with a P2P approach. Also, A P2P business process modeling system is presented. This, results in admitting the reality of enterprise that changes on the basis of services, and suggests more efficient and visual direction for the process integration between enterprises.

Career Sustaining Strategies of Female Retirees in South Korea: A Qualitative Study of Retirees from the Teaching and Public Service Professions (여성 퇴직자의 생애사를 통해서 본 취업 지속 배경에 관한 질적 연구: 교직.공무원직 퇴직자를 중심으로)

  • Sung, Mi-Ai;Ok, Sun-Wha
    • Journal of Families and Better Life
    • /
    • v.24 no.5 s.83
    • /
    • pp.69-87
    • /
    • 2006
  • This article attempts to explore how the women retirees under study were able to continue work until retirement. This study used life histories, especially focusing on daily working lives, and uncovered a number of key issues through in-depth interviews. The main results are as follows: Firstly, the women retirees examined here had been raised as highly educated people, and their strong educational background was a base component for them to have relatively secure careers. Their parents had also supported practically the women retirees during their working lives. In addition, the women retirees had to can out the roles of 'provider' for their original families, procreation families or in-law families, even though they were not given the recognized roles of provider. Secondly, the women retirees had a private infra system to support them with housework and child care. In addition, because they were financially able to employ housemaids, the women retirees did not experience conflicts with their husbands, who took on a neo-traditional sex role. Finally, thanks to relatively good working conditions such as having vacations and being able to come to and leave the office on time, the women retirees were able to continue work until retirement no mean feat in a society which openly practiced gender discrimination.

Development of Rainfall-Runoff Model for a Long and Short Term Runoff Analysis in Small Forested Mountain Watersheds (산림소유역(山林小流域)의 장(長)·단기(短期) 유출(流出) 해석(解析)을 위(爲)한 강우(降雨)-유출모형(流出模型)의 개발(開發))

  • Woo, Bo Myeong;Kim, Je Su;Lee, Heon Ho;Choi, Hyung Tae
    • Journal of Korean Society of Forest Science
    • /
    • v.87 no.1
    • /
    • pp.11-19
    • /
    • 1998
  • The purpose of this study was to develop the Rainfall-Runoff Model for a long and short term runoff analysis in small forested mountain watersheds. This model was derived from tank model. This model is composed of four tank. Tank I, Tank II, TankIII, and TankIV represent interception loss in forest canopy, direct runoff, base flow, and surface flow component, respectively. This model was tested with two experimental watersheds, located in southern part of Korea. As the result, this model had potentials for simulating and analyzing the long and short term runoff in small forested watersheds.

  • PDF

Development of a purifying system to separate minute solid particles and water in oil (오일 속 미세입자 및 수분분리를 위한 청정기 시스템 개발)

  • Kim, Yong-Keun;Choi, Yoon-Hwan;Moon, Myung-Jun;Lee, Yeon-Won
    • Journal of Advanced Marine Engineering and Technology
    • /
    • v.41 no.1
    • /
    • pp.44-49
    • /
    • 2017
  • In this research, a purifying system using a centrifugal filter equipped with a water separation component has been studied. Oil utilized for lubrication and cooling in marine engines becomes unable to achieve its original purpose over time as the accumulation of solid particles and water increases. Therefore, methods applying the Bernoulli equation to eliminate water in oil were investigated and proposed. As a result, a practical purifying system was designed and tested by an officially certified organization. The new purifying system is anticipated to contribute to the extension of the lifetime of oil in addition to damage reduction methods of mechanical parts.

Development of Assessment Methodology on Creep-Fatigue Crack Behavior for a Grade 91 Steel Structure (Mod.9Cr-1Mo 강 구조의 크리프-피로 균열 거동 평가법 개발)

  • Lee, Hyeong-Yeon;Lee, Jae-Han
    • Transactions of the Korean Society of Mechanical Engineers A
    • /
    • v.34 no.1
    • /
    • pp.103-110
    • /
    • 2010
  • In this study, an assessment method on creep-fatigue crack initiation and crack growth for a Mod.9Cr-1Mo steel (ASME Grade 91) structure has been developed with an extension of the French RCC-MR A16 procedure. The current A16 guide provides defect assessment procedure for a creep-fatigue crack initiation and crack growth for an austenitic stainless steel, but no guideline is available yet for a Mod.9Cr-1Mo steel which is now widely being adopted for structural materials of future nuclear reactor system as well as ultra super critical (USC) thermal plant. In the present study an assessment method on creep-fatigue crack initiation and crack growth is provided for the FMS (Ferritic-Martensitic Steel) and assessment on the creep-fatigue crack behavior for a structure has been carried out. The assessment results were compared with the observed images from a structural test.

Internal Perfusion of ADP in Mouse Oocytes Increases Outward $K^+$ Currents (ADP에 의한 생쥐 난자의 외향전류 증가 효과)

  • 한재희;박홍기;강다원;이상미;이상호;배인하;홍성근
    • Development and Reproduction
    • /
    • v.4 no.2
    • /
    • pp.243-250
    • /
    • 2000
  • To find the mechanism underlying the ADP-induced increase in the outward current in ovulated mouse oocytes, we examined changes in voltage-dependent currents using the whole cell voltage clamp technique and the internal perfusion technique. Eggs were collected from the oviduct of superovulated mice with PMSG and hCG. Membrane potential was held at -60 mV (or -80 mV in the case of recording $Ca^{2+}$ currents) and step depolarizations or hyperpolarizations were applied for 300 ms. By step depolarizations, outward currents comprising steady-state and time-dependent components were elicited. They were generated in response to the positive potential more than 20 mV with severe outward rectification and were blocked by external TEA, a specific $K^{+}$ channel blocker, suggesting that they be carried via $K^{+}$ channels. Internally-perused 5 mM ADP gradually increased outward $K^{+}$ currents (IK) 1 min after perfusion of ADP and reached slowly to maximum (150~170%) 5 min later over the positive potential range, implying that ADP might not be acted directly to the $K^{+}$ channels. IK were decreased by 5 mM ATP without affecting the steady-state component of outward current. In contrast to the effect of ADP and ATP on IK, both effect of ATP and ADP on inward $Ca^{2+}$ currents (ICa) could not be detected due to the continuous decrease in current amplitudes with time-lapse ("run-down" phenomena). To check if there is a G protein-involved regulation in the ionic current of mouse oocytes, 1 mM GTP was applied to the cytoplasmic side, and the outward current and inward currents were recorded. ICa was promptly increased in the presence of GTP whereas IK was not changed. from these results, it is concluded that the ATP-dependent regulation is likely linked in the ADP-induced increase in the outward $K^{+}$ current, and G protein-involved cellular signalling might affect ion channels carrying $Ca^{2+}$ and $K^{+}$ in mouse oocytes.

  • PDF

Identification of Putative MAPK Kinases in Oryza minuta and O. sativa Responsive to Biotic Stresses

  • You, Min Kyoung;Oh, Seung-Ick;Ok, Sung Han;Cho, Sung Ki;Shin, Hyun Young;Jeung, Ji Ung;Shin, Jeong Sheop
    • Molecules and Cells
    • /
    • v.23 no.1
    • /
    • pp.108-114
    • /
    • 2007
  • The mitogen-activated protein kinase (MAPK) signaling cascade is critical for regulating plant defense systems against various kinds of pathogen and environmental stresses. One component of this cascade, the MAP kinase kinases (MAPKK), has not yet been shown to be induced in plants following biotic attacks, such as those by insects and fungi. We describe here a gene coding for a blast (Magnaporthe grisea)- and insect (Nilaparvata lugens)-responsive putative MAPK kinase, OmMKK1 (Oryza minuta MAPKK 1), which was identified in a library of O. minuta expressed sequence tags (ESTs). Two copies of OmMKK1 are present in the O. minuta genome. They encode a predicted protein with molecular mass 39 kDa and pI of 6.2. Transcript patterns following imbibition of plant hormones such as methyl jasmonic acid (MeJA), ethephone, salicylic acid (SA) and abscisic acid (ABA), as well as exposure to methyl viologen (MV), revealed that the expression of OmMKK1 is related to defense response signaling pathways. A comparative analysis of OmMKK1 and its O. sativa ortholog OsMKK1 showed that both were induced by stress-related hormones and biotic stresses, but that the kinetics of their responses differed despite their high amino acid sequence identity (96%).

Development and Validation of Spatial Visualization Tests for Elementary School Children (초등학생용 공간 시각화 검사지 개발 및 표준화)

  • Park, Sungsun
    • Education of Primary School Mathematics
    • /
    • v.17 no.2
    • /
    • pp.159-171
    • /
    • 2014
  • Spatial ability has been valued as one component of intelligence and as an talented domain. And it is associated with the achievements in science, technology, engineering, and mathematics (STEM) disciplines. So, the instrument for measuring spatial ability is very important. The purpose of this study is to develop Spatial Visualization Tests for Elementary School Children and examine internal consistency reliability evidence and construct validity evidence on confirmatory factor analysis of that instrument. For this purpose, 'The Spatial Visualization Tests for Elementary School Children was administered to 1482 Korean elementary school students. As a result, this study show that internal consistency reliability evidence using Cronbach' alpha showed item consistency and construct validity evidence from confirmatory factor analysis in the Spatial Visualization Tests for Elementary School Children. And also, this study show ed that item difficulty and item discrimination of the Spatial Visualization Tests for Elementary School Children were within an acceptable range.

Multi-body Dynamic Analysis for Tripod Constant Velocity Joint (트라이포드 타입 등속조인트의 다물체 동역학 해석)

  • Song, Myung-Eui;Lim, Young-Hun;Cho, Hui-Je;Bae, Dae-Sung
    • Transactions of the Korean Society of Automotive Engineers
    • /
    • v.18 no.1
    • /
    • pp.1-7
    • /
    • 2010
  • The paper proposes a multi-body dynamic simulation to numerically evaluate the generated axial force(G.A.F) and plunging resistant force(P.R.F) practically related to the shudder and idling vibration of an automobile. A numerical analysis of two plunging types of CV joints, tripod joint(TJ) and very low axial tripod joint(VTJ), is conducted using the commercial program DAFUL. User-defined subroutines of a friction model illustrating the contacted parts of the outboard and inboard joint are subsequently developed to overcome the numerical instability and improve the solution performance. The Coulomb friction effect is applied to describe the contact models of the lubricated parts in the rolling and sliding mechanisms. The numerical results, in accordance with the joint articulation angle variation, are validated with experimentation. The offset between spider and tulip housing is demonstrated to be the critical role in producing the 3rd order component of the axial force that potentially causes the noise and vibration in vehicle. The VTJ shows an excellent behavior for the shudder when compared with TJ. In addition, a flexible nonlinear contact analysis coupled with rigid multi-body dynamics is also performed to show the dynamic strength characteristics of the rollers, housing, and spider.

Development of Prediction Models for Nondestructive Measurement of Sugar Content in Sweet Persimmon (단감의 당도예측모델 개발에 관한 연구)

  • Son, J.R.;Lee, K.J.;Kang, S.;Kim, G.;Yang, G.M.;Mo, C.Y.;Seo, Y.
    • Journal of Biosystems Engineering
    • /
    • v.34 no.3
    • /
    • pp.197-203
    • /
    • 2009
  • This study was performed to develop a nondestructive determination technology for sugar content in sweet persimmons, and the main research results included the following. In order to determine sugar content in sweet persimmons, a dual side reflex was adopted, and the study was to measure sugar content using a reflectance spectrum for 2 parts because it was difficult to determine representative sugar content due to a great deviation in sugar content according to the part of sweet persimmons. To predict sugar contents of sweet persimmon, PLSR and PCR models were compared with a few preprocess methods. As a result, PLSR had $R^2$=0.67, SEP=0.42 brix, LV=11, and PCR had $R^2$=0.65, SEP=0.41 brix, PC=16. SNV method was the best among preprocess methods for predicting sugar contents.