At present, irrigation decision-making systems applied to the field of agriculture were mostly aimed at a given area and specific crops. It was difficult to be applied in different areas and different crops. In this paper, a precision irrigation decision-making system has done something to solve this problem. The paper, on the one hand, has synthesized multi-areas and multi-crops in one decisio...

This paper addresses web object size which is one of important performance measures and affects to service time in multiple access environment. Since packets arrive according to Poission distribution and web service time has arbitrary distribution, M/G/1 model can be used to describe the behavior of the web server system. In the time division multiplexing (TDM), we can use M/D/1 with vacations ...

Offering telematics services toward the end-users involves inter-domain real-time service provisioning, it therefore can also involves inter-domain real-time service accounting. Recognizing the increasing complexity of accounting services due to dynamic service usage behavior of the end-users, the paper addresses a way to first, decompose end-to-end service into accountable service components a...

We consider a polling system of N queues Q1, . . . , QN , cyclically visited by a single server. Customers arrive at these queues according to independent Poisson processes, requiring generally distributed service times. When the server visits Qi, i = 1, . . . , N , it serves a number of customers according to a certain visit discipline. This discipline is assumed to belong to the class of bran...

banking and financial services are important parts of the service industry. quality of service in the banking industry has a close relationship with customer satisfaction service system. banks could create competitive advantage by increasing customer satisfaction and reduce costs in today's competitive environment. this paper presents a decision-making model to obtain optimum tasks assigne...

In wireless sensor networks (WSNs), an efficient allocation of application modules on sensors can reduce application’s execution time, thereby saving energy and extending WSN lifetime. This poster presents a general framework for optimal module allocation in heterogeneous WSNs. The framework relies on an analytical model for the execution time of applications and considers stochastic processing...

We consider a network of service stations with different classes of customers where interarrival times and service requirments have ph~e-type distributions, and the service discipline is an arbitrary work-conserving policy. We show that the underlying Markov process is ergodic, if and only if the utilization at eaclt. service station is less than one. We also show, that all the moments of the q...

Pricing Web services with different Quality of Service (QoS) classes over the Internet is a challenging scientific problem. Finding the optimal price per QoS class allows each provider to maximize its revenue and to solve the capacity planning problem. The most works presented in the literature focus on a monopolistic setting where one service provider sells one or more services of different cl...

We study cyclic polling models with exhaustive service at each queue under a variety of non-FCFS (first-come–first-served) local service orders, namely last-come–first-served with and without preemption, random-order-of-service, processor sharing, the multiclass priority scheduling with and without preemption, shortest-job-first, and the shortest remaining processing time policy. For each of th...