• Title/Summary/Keyword: dyadic policy

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Analysis of a Maintenance·Repair Service Center Model Operating under Alternating Complementary Dyadic Policies (상호보완적인 이변수 운영정책이 교대로 적용되는 정비서비스센터 모형분석)

  • Rhee, Hahn-Kyou
    • Journal of Applied Reliability
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    • v.17 no.1
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    • pp.58-65
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    • 2017
  • Different from general operating policies applied for various waiting line situations, two complementary dyadic operating policies are applied alternatingly to a single server maintenance service center model. That is, either of the two dyadic Min (N, T) or Max (N, T) policy is applied to operate such center first and the other operating policy should be applied later, and then the same sequence of both operating policies is followed repeatedly. This operating policy is denoted by the Minimax (N, T) policy. Purpose: Because of the newly introduced operating policy, important system characteristics of the considered service center model such as the expected busy and idle periods, the expected number of customers in the service center and so on should be derived to provide necessary information for determination of the optimal operating policy. Methods: Based on concepts of the newly introduced Minimax (N, T) policy, all necessary system characteristics should be redefined and then derived by constructing appropriate relations between complementary two dyadic operating policies. Results: Desired system characteristics are obtained successfully using simple procedures developed by utilizing peculiar structure of the Minimax (N, T) policy. Conclusion: Applying Minimax (N, T) operating policy is equivalent to applying the simple N and T operating policies alternatingly.

Development of the Most Generalized Form of the Triadic Operating Policy and Derivation of its Corresponding Expected Busy Period (가장 일반화된 형태의 삼변수 운용방침 개발과 그에 따른 Busy Period 기대값 유도)

  • Rhee, Hahn-Kyou;Oh, Hyun-Seung
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.32 no.4
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    • pp.161-168
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    • 2009
  • The most generalized form of the triadic operating policy for an M/G/1 queueing model is developed. It consists of three simple N, T and D operating policies and has a peculiar structure possessing concepts of dyadic policies. Using the concept of the pseudo probability density function of the busy period, its expected busy period for the controllable M/G/1 queueing model is derived. Since the obtained result is the most generalized form the triadic polity, the expected busy periods for all known dyadic policies are recovered as special cases from it.

Development of a New Methodology to find the Expected Busy Periods for Controllable M/G/1 Queueing Models Operating under the Multi-variable Operating Policies: Concepts and applications to the dyadic policies

  • Rhee, Hahn-Kyou
    • Journal of Korean Institute of Industrial Engineers
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    • v.23 no.4
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    • pp.729-739
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    • 1997
  • In this paper, steady-state controllable M/G/1 queueing systems operating under the dyadic policies are considered. A new method to obtain the expected busy period when the D-policy is involved in system operation, is developed. This new method requires derivation of so called 'the pseudo probability density function' of the busy period for the system under consideration, which is completely different from its actual probability density function. However, the proposed pseudo probability density function does generate the correct expected busy period through simple procedures.

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The Effects of Enjoyable Couple Activity and Common Dyadic Coping on Marital Satisfaction through Mediation of Sexual Intimacy: Focusing on Urban Chinese Women in the Early Years of Marriage (즐거운 부부활동과 협력적 부부대처가 성적 친밀감을 매개로 결혼만족도에 미치는 영향: 결혼초기 중국 도시 여성을 중심으로)

  • Kim, Deuksung;Kwon, Yoona;Xin, Siyuan
    • Human Ecology Research
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    • v.59 no.1
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    • pp.45-58
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    • 2021
  • The present study examined whether enjoyable couple activity and common dyadic coping as daily positive couple interactions have direct or indirect effects on marital satisfaction through the mediation of sexual intimacy among urban Chinese women in the early years of marriage. The subjects were 182 urban women born under the one-child policy, who live in Heilongjiang, Anhui and Beijing provinces of China, and have been married up to six years. Data were collected using a self-administered questionnaire. We conducted a hierarchical multiple regression analysis in SPSS software and tested the significance of the mediation effects using bootstrapping method in Mplus software. The results of the study are as follows. First, both enjoyable couple activity and common dyadic coping had positive direct impacts on urban Chinese women's marital satisfaction and positive indirect impacts on marital satisfaction via sexual intimacy. Second, enjoyable couple activity was the strongest predictor of marital satisfaction, followed by common dyadic coping and sexual intimacy. The path model explained 48% of the variance in marital satisfaction. The results suggest that enjoyable couple activity, common dyadic coping, and sexual intimacy should be considered in the design of interventions to enhance urban Chinese women's marital satisfaction in the early years of marriage.

Construction of a Relation Between the Triadic Min(N, T, D) and Max(N, T, D) Operating Policies Based on their Corresponding Expected Busy Periods (Busy Period 기대값을 사용하여 삼변수 Min(N, T, D)와 Max(N, T, D) 운용방침사이의 관계식 설정)

  • Rhee, Hahn-Kyou
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.33 no.3
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    • pp.63-70
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    • 2010
  • Based on the known results of the expected busy periods for the triadic Min (N, T, D) and Max (N, T, D) operating policies applied to a controllable M/G/1 queueing model, a relation between them is constructed. Such relation is represented in terms of the expected busy periods for the simple N, T and D, and the dyadic Min (N, T), Min (T, D) and Min (N, D) operating policies. Hence, if any system characteristics for one of the two triadic operating policies are known, unknown corresponding system characteristics for the other triadic operating policy could be obtained easily from the constructed relation.

Derivations of Upper and Lower Bounds of the Expected Busy Periods for the Min(N, D) and Max(N, D) Operating Policies in a Controllable M/G/1 Queueing Model (조정가능한 M/G/1 대기모형에 Min(N, D)와 Max(N, D) 운용방침이 적용될 때 busy period 기대값의 상한과 하한 유도)

  • Rhee, Hahn-Kyou;Oh, Hyun-Seung
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.32 no.3
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    • pp.71-77
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    • 2009
  • Using the results of the expected busy periods for the dyadic Min(N, D) and Max(N, D) operating policies in a controllable M/G/1 queueing model, an important relation between them is derived. The derived relation represents the complementary property between two operating policies. This implies that it could be possible to obtained desired system characteristics for one of the two operating policies from the corresponding known system characteristics for the other policy. Then, upper and lower bounds of expected busy periods for both dyadic operating policies are also derived.

Effects of State-Anxiety and Dyadic Adjustment on Pregnant Women's Pregnancy Stress (임부의 상태불안, 부부적응이 임신스트레스에 미치는 영향)

  • Hwang, Ran Hee
    • Journal of Digital Convergence
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    • v.17 no.5
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    • pp.225-233
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    • 2019
  • The purpose of this study was to investigate state-anxiety, dyadic adjustment and pregnancy stress in pregnant women and to identify factors influencing pregnancy stress. Data were collected 158 pregnant women. Data were analyzed using t-test, ANOVA, Scheffe's test, Pearson's correlation coefficient, stepwise regression analysis. There was statistically significant difference in state-anxiety on variable such as age. There were statistically significant difference in dyadic adjustment on variables such as education, religion, income. There was not statistically significant difference in pregnancy stress on variables. Pregnancy stress was positively correlated with state-anxiety. Pregnancy stress was negatively correlated with dyadic adjustment. State-anxiety was negatively correlated with dyadic adjustment. Factor influencing pregnancy stress was state-anxiety, which explained 25.1%. Findings provide useful information for further studies in pregnancy stress of pregnant women. Therefore, to reduce pregnancy stress of pregnant women, it is necessary to standardized nursing intervention program.

Decomposition of the Most Generalized Triadic Operating Policy Using its Corresponding Expected Busy Period (Busy Period 기대값을 사용하여 가장 일반화된 삼변수 운용방침의 분석)

  • Rhee, Hahn-Kyou
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.34 no.4
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    • pp.162-168
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    • 2011
  • The most generalized form of the triadic operating policy for a controllable M/G/I queueing model is analyzed to obtain fundamental relations among the other forms of operating policies based on its corresponding expected busy period. Since it consists of three decision variables N, T and D, it could be possible to decompose into the simple, the dyadic and other forms of the triadic operating policies. The procedures to decompose the most generalized triadic policy into other forms of operating policies could provide a general methodology to identify each element associated with it.

Analysis of Discrete-Time Geo/G/1 Queues under Workload Control and Multiple Vacations (일량제어정책과 복수휴가를 갖는 이산시간 Geo/G/1 대기행렬의 분석)

  • Lee, Se Won
    • Journal of Korea Society of Industrial Information Systems
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    • v.23 no.2
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    • pp.29-39
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    • 2018
  • In this paper, we discuss a discrete-time queueing system with dyadic server control policy that combines workload control and multiple vacations. Customers arrive at the system with Bernoulli arrival process. If there is no customer to serve in the system, an idle single server spends a vacation of discrete random variable V and returns. The server repeats the vacation until the total service time of waiting customers exceeds the predetermined workload threshold D. In this paper, we derived the steady-state workload distribution of a discrete-time queueing system which is operating under a more realistic and flexible server control policy. Mean workload is also derived as a performance measure. The results are basis for the analysis of system performance measures such as queue lengths, waiting time, and sojourn time.

Effects of Salespersons' Appreciative Inquiry and Emotional Labor on Adaptive Selling Behavior and Customer Satisfaction (영업사원의 긍정 탐색 수용도와 감정노동이 적응적 판매행동 및 고객만족에 미치는 영향)

  • Lee, Hang;Kim, Joon-Hwan
    • Journal of Digital Convergence
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    • v.16 no.8
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    • pp.151-159
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    • 2018
  • This study focused on appreciative inquiry(AI) of salespeople who have to respond to various types of emotions according to the desires of individual customers at service contact points and the effect of emotional labor on adaptive selling behavior and customer satisfaction. Dyadic questionnaires were administerd to 115 automobile salespeople and 2 customers who received service from each salesperson, and the collected data was analyzed by using structural equation modeling. The results showed that AI had positive influences on deep acting and surface acting. Only deep acting was found to have positive relationship with adaptive selling behavior, but not to surface acting. Adaptive selling behavior had a positive effect on customer satisfaction. This study will contribute to identifying the need for AI access for salespersons and for activating adaptive selling behavior through emotional labor related to AI practice.