MOMENTS OF THE DURATION OF BUSY PERIODS OF MX/G/1/n SYSTEMS

2008 ◽  
Vol 22 (3) ◽  
pp. 347-354 ◽  
Author(s):  
António Pacheco ◽  
H. Ribeiro

We derive a simple recursion to compute moments of arbitrary order of the duration of busy periods of MX/G/1/n systems starting with an arbitrary number of customers in the system.

1975 ◽  
Vol 12 (03) ◽  
pp. 524-532 ◽  
Author(s):  
Bent Natvig

A general birth-and-death queueing model is considered with N waiting positions (0 ≦ N ≦ ∞), s servers (1 ≦ s ≦ ∞) and a first-come-first-served queueing discipline. The first and second order moments of the steady-state waiting-time (excluding service) for a non-lost arriving customer are given. By setting the busy period equal to the time where at least one service is in progress, we obtain the first and second order moments of the length of a busy period and also the distribution of the number served during it, given an arbitrary number of customers present originally. Using a direct approach all expressions are given in explicit forms which, although being far from elegant, are suitable for evaluation on a computer.


1999 ◽  
Vol 62 (4) ◽  
pp. 461-471
Author(s):  
BIJAN Sh. SABZEVARI

Mode coupling takes place in a small, but non-zero, region around the coupling point. A general formula for the size of this coupling region is given. This formula is valid for anisotropic absorbing media with the inhomogenity in one direction and for a linear system of wave equations with an arbitrary number of fields and of arbitrary order; i.e. an arbitrary number of waves can couple and an arbitrary number of coupling points can coalesce. It is shown that the size is dependent on the number of modes that exist in the medium and the number of coupling points that coalesce. The formula is applied to some examples. A peculiar result that the formula shows is that as the temperature approaches infinity, the size of the mode-coupling region approaches a constant finite value, and in certain cases this size approaches zero; i.e. in these cases of extremely high temperature, mode coupling eventually vanishes.


1975 ◽  
Vol 12 (3) ◽  
pp. 524-532 ◽  
Author(s):  
Bent Natvig

A general birth-and-death queueing model is considered with N waiting positions (0 ≦ N ≦ ∞), s servers (1 ≦ s ≦ ∞) and a first-come-first-served queueing discipline. The first and second order moments of the steady-state waiting-time (excluding service) for a non-lost arriving customer are given. By setting the busy period equal to the time where at least one service is in progress, we obtain the first and second order moments of the length of a busy period and also the distribution of the number served during it, given an arbitrary number of customers present originally. Using a direct approach all expressions are given in explicit forms which, although being far from elegant, are suitable for evaluation on a computer.


2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Akhmad Khoyrun Najakh ◽  
Dwiwiyati Astogini ◽  
Sri Martini

The purpose of this study was to analyze the influence of attitudes on the intention to choose Islamic banks, to analyze the effect of subjective norm on the intention to choose Islamic banks. to analyze the effect of the control behavior of the intention to choose the Islamic banks, to analyze the moderating influence of religiosity on the relationship attitudes, subjective norms and behavioral control of the intention to choose the Islamic banks . The method used is a survey with a sampling technique used purposive sampling with a sample size of this study was 100 respondents . Further analysis tools used in this study is multiple regression analysis using SPSS 16.0 software . Based on this study it can be concluded that the attitude does not affect to the intention of choose Bank BRISyariah. Subjective norm positive effect on intention choose Bank BRISyariah. Control behavior does not affect to the intention choose Bank BRISyariah. Relationship between Attitudes, Subjective Norms and Behavior Control with the intention to select Bank BRISyariah not moderated by religiosity.Based on these conclusions can be said that the Bank BRISyariah should improve understanding related to the subjective norm in order to increase the number of customers who use the services of Islamic Banking . Further research is recommended in order to follow up and develop this research to further explore the independent and dependent variables continued before and after behavioral intention or intention to perform a specific action .


2019 ◽  
Vol 2 (2) ◽  
pp. 21
Author(s):  
Lindawati Lindawati

Reduction of food rations and shortages is one of the impacts of the increasing human population. Food sector industries then try to cope with the fast growing number of customers. Agribusiness sector gains its popularity in these recent years, including pig farm. The increase trend of animal farming industry is likely to bring increasing pollution problem unless effective treatment methods are used. The main problems related to the pig farm include odor nuisance and pig manure disposal. The existing land application of piggery wastewater is the traditional way to discharge the wastewater. This may yield in land and water contamination, due to the accumulation of unused nutrients by crop plant. A case study of a large commercial pig farm from Australia is proposed to apply in smaller scale in Indonesia. Operational strategies for the small-scale SBR (Sequencing Batch Reactor) treating piggery effluent were developed based on lab-scale experiments. Due to SBR characteristics, which are money-saving and space-saving, it is very suitable to be applied in urban area. An economic evaluation was made of various process options. The cost estimation showed that SBR is a cost effective process, allowing operational batches to be adjusted to reduce unnecessary aeration cost. A reduction in the aeration cost was achieved by shortening the batch time from 24-h to 8-h. A comparison of three different SBR options showed that smaller size reactors could be more flexible and cost effective when compared with the larger ones.


2018 ◽  
Vol 6 (1) ◽  
Author(s):  
Dr. Iwan Kurniawan Subagja, SE., MM.

In the current era of globalization the level of competition in the business world becomes increasingly tight. Many are doing small businesses that require capital, or small businesses that are developing to increase the ability of an increasing economy. This relates to one of the most important objectives and should be undertaken by all types of business: maintaining the viability of the company over a long period of time (going concern), business activities sometimes, visiting some things with competition to gain additional capital. This also makes it a challenge for bank companies to showcase their brand and quality of service that is superior and satisfactory to the purpose and number of customers. This study aims to describe the quality of service and corporate image to customer satisfaction PT. Bank Perkreditan Rakyat Gracia Mandiri Bekasi Timur. Samples and this research lied 100 respondents with sampling technique purposive sampling. The method of analysis used are description and regression analysis. The results showed that the quality of service and corporate image include customer satisfaction.


2020 ◽  
pp. 1-4
Author(s):  
M Himabindu

Store Atmospherics is an innovative tool that retailers use to attract a number of customers into the store and retain them for longer time in the store. The share of large format retail stores in organized retail sector is increasing significantly. This paper is an empirical study of factors of Store Atmospherics from customers’ viewpoint. Data was collected through structured questionnaire from 75 respondents following convenience sampling technique. Reliability test and factor analysis were done using SPSS. Results show that Store Music, Store Decorations, Store Fragrance, Store Brightness, In-store Promotions and Ambience are the important Store Atmospheric factors. Large format retailers should focus more on these so as to increase their appeal to the customers and give them a good shopping experience so that favourable shopping outcomes follow.


2020 ◽  
pp. 15-19
Author(s):  
M.N. Kirsanov

Formulae are obtained for calculating the deformations of a statically determinate lattice under the action of two types of loads in its plane, depending on the number of panels located along one side of the lattice. Two options for fixing the lattice are analyzed. Cases of kinematic variability of the structure are found. The distribution of forces in the rods of the lattice is shown. The dependences of the force loading of some rods on the design parameters are obtained. Keywords: truss, lattice, deformation, exact solution, deflection, induction, Maple system. [email protected]


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