Multiclass closed queueing networks with deterministic service times and finite local buffers: an approximate performance analysis method

Author(s):  
M. Aicardi ◽  
R. Minciardi ◽  
P.P. Puliafito
1992 ◽  
Vol 29 (04) ◽  
pp. 979-995 ◽  
Author(s):  
Nicholas Bambos

In this paper we first study ring structured closed queueing networks with distinguishable jobs. Under assumptions of periodicity and ergodicity of the service times, essentially the most general, it is shown that the limits defining the average flows of the jobs exist almost surely, and methods for their estimation by simulation are given. However, it turns out that the values of the flows depend on the initial positions of the jobs, due to the emergence of distinct persistent blocking modes. The effect of these modes on the behavior of general networks with queueing loops is examined. For independent and identically distributed service times, conditions are specified for the network to asymptotically approach a steady state at large times. Finally, we study the special case of ring networks with indistinguishable items and stationary and ergodic service times. It is shown that as the number of jobs in the network increases towards infinity, the average circulation time converges to the maximum of the expectations of the service times.


1992 ◽  
Vol 29 (4) ◽  
pp. 979-995 ◽  
Author(s):  
Nicholas Bambos

In this paper we first study ring structured closed queueing networks with distinguishable jobs. Under assumptions of periodicity and ergodicity of the service times, essentially the most general, it is shown that the limits defining the average flows of the jobs exist almost surely, and methods for their estimation by simulation are given. However, it turns out that the values of the flows depend on the initial positions of the jobs, due to the emergence of distinct persistent blocking modes. The effect of these modes on the behavior of general networks with queueing loops is examined.For independent and identically distributed service times, conditions are specified for the network to asymptotically approach a steady state at large times.Finally, we study the special case of ring networks with indistinguishable items and stationary and ergodic service times. It is shown that as the number of jobs in the network increases towards infinity, the average circulation time converges to the maximum of the expectations of the service times.


1993 ◽  
Vol 19 (12) ◽  
pp. 1345-1358 ◽  
Author(s):  
F.B Hanson ◽  
Jing-Dong Mei ◽  
Charles Tier ◽  
Huihuang Xu

2018 ◽  
Vol 2 (01) ◽  
pp. 14
Author(s):  
Eddy Supardi

The Tax Payer obidience in fulfiling their taxation obligation will be influenced a lot by the satisfaction level toward the service fiscus. The aim of this observation is to know the response of Tax Payer toward service quality through importance and performance. The population which become the object of this observation is the personal Tax Payer registered in Bogor Tax Service Office and the number of respondents taken as the sample are 100 respondents with Slovin formula. The analysis method used is descriptive analysis and importance-performance analysis.   The result of this observation will be able to be used as one of the input to Bogor Tax Service Office in improving the quality service and for the following observation, especially those who take the same object as the observation in order to improve the quality service to the Tax Payer based on the service of its working way which is felt less. Otherwise it is important for The Tax Payer, maintaining the good work or balancing the service quality based on the working way which is evaluated less important by The Taxe Payer, but has been done reasonably well or very well by The Service Office


Author(s):  
Frendly Matulessy ◽  
Dionisius Bawole

This study aims to measure the performance of fish auction process in Arumbai Market in Ambon. Primary data were collected from 43 respondents through observation and direct interview based on questionnaire. Data was analysed by qualitative descriptive method, importance performance analysis method (IPA) and gap analysis, and value for money method. The results show that: 1). There are three auction process activities namely pre auction, auction, and post auction; 2). Fisherman's satisfaction level is 67% and merchant satisfaction is 81%; and 3). The auction performance of the economic aspect is less economical, with the final value of 83%, while the fish auction performance from the efficiency aspect is less efficient with the value of 76%. For that, it needs additional officers to manage fish auction place (TPI) in Arumbai Market. In addition, the fish auction facilities (TPI) in Arumbai Market needs to be improved.


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