• Title/Summary/Keyword: Resource Exchange

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The Relationship among Leader-Member Exchange(LMX), Empowerment, Job Satisfaction, Organizational Commitment, and Customer Orientation : Focused on the Jeju-Air (리더-구성원 교환관계(LMX)가 임파워먼트, 조직몰입, 직무만족, 고객지향성에 미치는 영향에 관한 연구 - 제주항공 중심으로 -)

  • Lee, Jung-A;Lee, Gi-Jong
    • Journal of Korean Society for Quality Management
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    • v.44 no.4
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    • pp.983-997
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    • 2016
  • Purpose: The purpose of this paper is to examine the structural relationship among leader-member exchange(LMX), empowerment, job satisfaction, organizational commitment, and customer orientation in a low-cost carrier industry. Methods: The collected data through the survey were analyzed using structure equation model analysis The sample used for the empirical analysis is a total of 231 questionnaires. Results: The results of empirical analysis are summarized as follows. First, LMX in a low-cost airline has a significant effect on empowerment, job satisfaction, and customer orientation Second, empowerment has a significant impact on organizational commitment and job satisfaction. However, it is not significantly related to customer orientation. Third, Organization Commitment has significant effect on jon satisfaction. Finally, job satisfaction has a significant impact on customer orientation. Conclusion: This paper has a contribution in that it extends the range of the academic research concerning LMX. Also this paper provides implications on effective human resource management method suitable for a Jeju-Air.

A Data Exchange Framework for Interoperability between Workflow Systems (워크플로우 시스템 사이의 상호운영성을 위한 데이타 교환 프레임워크)

  • Na, Hong-Seok;Kim, Jung-Il;Lee, Lee-Seop;Baek, Du-Gwon
    • Journal of KIISE:Software and Applications
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    • v.28 no.3
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    • pp.249-261
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    • 2001
  • 웹 기반의 워크플로우 시스템은 기업간 전자상거래에 필수적인 요소로 부각되고 있다. 그러나 상이한 벤더들에 의해 제작된 워크플로우 엔진들은 상호운영성이 보장되지 않기 때문에 전자상거래의 제기능을 발휘하지 못한다. 이와 같은 문제를 해결하기 위한 노력으로 WfMC(Workflow Management Coalition)에서는 워크플로우 시스템간의 상호운영성을 위한 기본 명세를 제공하고 있으나, 인터넷상에서의 구체적인 활용방안은 제시되지 못하고 있다. 본 논문에서는 워크플로우 시스템 사이의 데이타 교환을 위한 프레임워크(WDEF : Workflow Data Exchange Framwork)를 제시한다. WDEF는 데이타 레지스트리를 중심으로 하여 워크플로우간 상호운영성을 제공하기 위한 메타데이타를 기술하고, 네트워크 상의 자원을 기술하기 위한 기반 기술인 RDF(Resource Description Framework)를 이용하여 워크플로우간의 메시지를 구성한다. 데이타 레지스트리를 이용함으로써, WDEF는 WfMC에서 정의하는 워크플로우 상호운영성을 위한 요구조건들을 모두 수용하면서 보다 확장성 있고 유연한 구조를 가지며, RDF에 기반한 자동적인 XML 인코딩을 통해 전자 상거래에 이용되는 다른 XML문서와도 완벽한 호환성을 가진다.

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The Network Structural Characteristic of Social Welfare Organizations - Focused on the Social Welfare Organizations in Busan - (사회복지시설 네트워크 구조적 특성 - 부산 사회복지 개별기관의 네트워크 활동을 중심으로 -)

  • Kim, Kyeo-Jeung
    • The Journal of the Korea Contents Association
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    • v.9 no.6
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    • pp.309-324
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    • 2009
  • The purpose of this study, decision factors about network characteristics among Social Welfare service organizations and individuals are defined to obtain proper empirical bases for building systematic human service network in the local community bases. As results of analysis, Firstly The order of density is shown as follows the information exchange, the client refer, the resource exchange. Secondly The result about the analysis whether the level factor of the organizational members and organizations affect positively is summarized as follows.it is shown that the number of meeting, organizational type, the prior experience of networking affect positively.

Analysis of Determinants of Export of Korean Laver and Tuna: Using the Gravity Model (우리나라 김과 참치의 수출 결정요인 분석 : 중력모형을 이용하여)

  • Kim, Eun-Ji;Kim, Bong-Tae
    • The Journal of Fisheries Business Administration
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    • v.51 no.4
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    • pp.85-96
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    • 2020
  • The purpose of this study is to find out the determinants of export in Korean fishery products. For the analysis, laver and tuna, which account for almost half of seafood exports, were selected, and a gravity model widely used in trade analysis was applied. As explanatory variables, GDP, number of overseas Koreans, exchange rate, FTA, and WTO were applied, and fixed effect terms were included to take into account multilateral resistance that hinders trade. The analysis period is from 2000 to 2018, and the Poisson Pseudo Maximum Likelihood (PPML) method was applied to solve the problem of zero observation and heteroscedasticity inherent in trade data. As a result of the analysis, GDP was found to have a significant positive effect on both laver and tuna. The number of overseas Koreans was significant in canned tuna exports, but not in laver and the other tuna products. As the exchange rate increased, the export of laver and tuna for sashimi increased. The impacts of the FTA were confirmed in the exports of dried laver and raw tuna, which supports the results of the previous study. WTO was not significant for laver and tuna. Based on these results, it is necessary to find a way to make good use of the FTA to expand exports of seafood.

Fast Channel Allocation for Ultra-dense D2D-enabled Cellular Network with Interference Constraint in Underlaying Mode

  • Dun, Hui;Ye, Fang;Jiao, Shuhong
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.15 no.6
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    • pp.2240-2254
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    • 2021
  • We investigate the channel allocation problem in an ultra-dense device-to-device (D2D) enabled cellular network in underlaying mode where multiple D2D users are forced to share the same channel. Two kinds of low complexity solutions, which just require partial channel state information (CSI) exchange, are devised to resolve the combinatorial optimization problem with the quality of service (QoS) guaranteeing. We begin by sorting the cellular users equipment (CUEs) links in sequence in a matric of interference tolerance for ensuring the SINR requirement. Moreover, the interference quota of CUEs is regarded as one kind of communication resource. Multiple D2D candidates compete for the interference quota to establish spectrum sharing links. Then base station calculates the occupation of interference quota by D2D users with partial CSI such as the interference channel gain of D2D users and the channel gain of D2D themselves, and carries out the channel allocation by setting different access priorities distribution. In this paper, we proposed two novel fast matching algorithms utilize partial information rather than global CSI exchanging, which reduce the computation complexity. Numerical results reveal that, our proposed algorithms achieve outstanding performance than the contrast algorithms including Hungarian algorithm in terms of throughput, fairness and access rate. Specifically, the performance of our proposed channel allocation algorithm is more superior in ultra-dense D2D scenarios.

Dynamic Elasticities Between Financial Performance and Determinants of Mining and Extractive Companies in Jordan

  • Yusop, Nora Yusma;Alhyari, Jad Alkareem;Bekhet, Hussain Ali
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.7
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    • pp.433-446
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    • 2021
  • This study aims to identify the elasticities and casualties of financial performance and determinants of the mining and extractive companies listed in Jordan's stock market over the 2005-2018 period. The conceptual framework is based on the Resource-Based View theory and Arbitrage Pricing theory is used to describe the relationship between the external environment and the financial performance of the companies. Profitability ratio (return on assets) is utilized as a proxy of financial performance measurement. Meantime, the company's characteristics, macroeconomic variables, and non-economic factors are utilized as independent factors. Data sources are panel data set for mining and extractive companies over the above period. Fully Modified Ordinary Least Square (FMOLS), Dynamic Ordinary Least Squares (DOLS), and Pooled Mean Group (PMG) methods are applied. The empirical findings indicated that company size, sales growth, financial leverage, liquidity, and GDP growth were the critical determinants of mining and extractive companies' financial performance in the Amman Stock Exchange. Thus, the findings conclude that company characteristics and GDP growth mainly drive financial performance. Moreover, the findings reveal that a bidirectional causal elasticity exists between GDP and financial leverage and return on assets (ROA). Sound financial performance can be obtained by paying more attention to GDP growth and firms' characteristics.

TAR and M-TAR Error Correction Models for Asymmetric Gasoline Price in Korea (TAR와 M-TAR 오차수정모형을 이용한 국내 휘발유가격의 비대칭성 분석)

  • Lee, Yang Seob
    • Environmental and Resource Economics Review
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    • v.17 no.4
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    • pp.813-843
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    • 2008
  • This paper investigates the presence of long-run and short-run price asymmetries in weekly gasoline prices from January 1997 to July 2008. In accordance with distribution channels, wholesale and retail stages are analyzed separately. An approach based on TAR and M-TAR cointegration tests, which entail matching asymmetric ECMs, is employed. For wholesale prices, asymmetries in the links with crude oil prices and exchange rates are found for both ECMs in the long-run and short-run. Exchange rates appear to play more significant role than crude oil prices in explaining the short-run price asymmetry. The rise in crude oil prices or exchange rates has statistically significant major impact on the increase of wholesale prices on the second week, not immediately as expected in the concept of 'rockets and feathers'. And asymmetrically, the fall does not have any statistically significant effect on the same period. The finding seems to be somewhat unusual. However, for retail prices, asymmetry m connection with wholesale prices is only revealed in the long-run. A symmetric price adjustment can be assumed in the short-run. Contrary to the long-run asymmetry found in the wholesale stage, in the retail stage, the speed of adjustment for negative deviations toward long-run equilibrium is faster than for positive ones, which is a phenomenon not favorable to consumers.

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Estimation of Economic Effects on Overseas Oil and Gas E&P by Macroeconomic Model of Korea (거시경제모형을 이용한 해외석유가스개발사업의 경제적 효과 추정 연구)

  • Kim, Ji-Whan;Chung, Woo Jin;Kim, Yoon Kyung
    • Environmental and Resource Economics Review
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    • v.23 no.1
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    • pp.133-156
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    • 2014
  • In general, quantity results of empirical analysis using model shows how much big performance policy has. Therefore this is useful to evaluate a policy. This paper composed macro economic model based on Bank of Korea's quarterly model and annual model, that estimates performance of overseas oil and gas development project to Korean economy in aspect of quantity. In this model, we estimated each effect in real GDP, current account, unemployment rate, CPI and exchange rate carried by recovered amount from overseas oil and gas development project. The recovered amount was evaluated in currency coming from oil and gas acquired from overseas oil and gas development project. Macro economic model of this paper benchmarked macro model composed by Bank of Korea(1997, 2004, 2012). We reviewed model robustness using statistical suitability of each equation and historical simulation for from 1994 to 2011. The recovered amount of overseas oil and gas development project has positive effect in every macro economic index except CPI and exchange rate. Economic effect to macro economic index become bigger with time because the recovered amount of overseas oil and gas development project are increasing until now. Although empirical results of economic effects in every year from the recovered amount of overseas oil and gas development project are different, as of 2011, empirical results showed that the recovered amount of overseas oil and gas development project increase 2.226% and 0.401% in current account and real GDP respectively. And it also decrease 0.489%p in unemployment rate. Exchange rate to US dollars also decrease in amount of 0.379%.

Comparison of Consumers' Satisfactions between Intemet Shopping and TV Home Shopping (인터넷쇼핑과 TV홈쇼핑 소비자의 구매만족도 비교분석)

  • Yoo Soo Hyun;Cha Kyung-Wook
    • Journal of Family Resource Management and Policy Review
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    • v.8 no.1
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    • pp.61-78
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    • 2004
  • The purpose of this study was to compare the consumers' satisfactions between those who prefer internet shopping and those who prefer CATV home shopping. This study examined both on-purchase satisfactions and post-purchase satisfactions. For on-purchase satisfactions, this study investigated informational satisfactions, convenience satisfactions, and price satisfactions, and for the post-purchase satisfactions, it examined overall satisfactions, delivery-related, and exchange or refund related satisfactions. The data(n=376) were obtained from a questionnaire. The data included 185 consumers of internet shopping, and 182 consumers of TV home shopping, and were analyzed by t-tests or chi-square test to compare those consumers' characteristics and satisfactions. The findings of this study are as follows: First, men aged 20s and those who had higher education, higher incomes were more likely to prefer internet shopping. Second, those who like TV home shopping were likely to search just one channel and to use less than 30 minutes to decide to purchase. Third, generally, those who prefer internet shopping showed higher scores of on-purchase satisfactions, and overall post-purchase satisfactions. However, TV home shopping consumers had higher scores of delivery-related satisfactions.

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IoT Healthcare Communication System for IEEE 11073 PHD and IHE PCD-01 Integration Using CoAP

  • Li, Wei;Jung, Cheolwoo;Park, Jongtae
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.12 no.4
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    • pp.1396-1414
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    • 2018
  • With the proliferation of the Internet of Things (IoT) healthcare devices, significant interoperability issue arises where devices use proprietary data transfer protocols. The IHE PCD-01 standard has been suggested for the exchange of healthcare data in ISO/IEEE 11073 PHD data model. However, the PCD-01 is not efficient to be used in the IoT environment. This is because the use of SOAP for PCD-01 may be too complex to be implemented in the resource-constrained IoT healthcare devices. In this paper, we have designed a communication system to implement ISO/IEEE 11073 and IHE PCD-01 integration using the IETF CoAP. More specifically, we have designed the architecture and procedures, using CoAP, to seamlessly transmit the bio-signal from the tiny resource-constrained IoT healthcare devices to the server in a standardized way. We have also built the agent, gateway, and PCD-01 interface at the server, all of which are using the CoAP as a communication protocol. In order to evaluate the performance of the proposed system, we have used the PCD data to be transmitted over CoAP, MQTT, and HTTP. The evaluation of the system performance shows that the use of CoAP results in faster transaction and lesser cost than other protocols, with less battery power consumption.