U. Yechiali

Publications
Influence

Scheduling Deteriorating Jobs on a Single Processor

S. Browne, U. Yechiali
Computer Science
Oper. Res.
1 May 1990

N jobs are to be processed sequentially on a single machine. Expand

Analysis of customers’ impatience in queues with server vacations

E. Altman, U. Yechiali
Mathematics, Computer Science
Queueing Syst. Theory Appl.
1 April 2006

We present a comprehensive analysis of the single-server, M/M/1 and M/G/1 queues, where customers’ impatience is due to an absentee of servers upon arrival, and obtain various closed-form results. Expand

Queues with slow servers and impatient customers

N. Perel, U. Yechiali
Computer Science
Eur. J. Oper. Res.
16 February 2010

We study M / M / c queues ( c = 1 , 1 c ∞ and c = ∞ ) in a 2-phase (fast and slow) Markovian random environment with impatient customers. Expand

Optimal Priority-Purchasing and Pricing Decisions in Nonmonopoly and Monopoly Queues

I. Adiri, U. Yechiali
Business, Computer Science
Oper. Res.
1 October 1974

An M/M/1 service station computer center consists of M separate queues. The ith i = 1, 2, ', M queue has priority over the jth iff i <j. Upon arrival, a customer receives all the information… Expand

Queuing Problems with Heterogeneous Arrivals and Service

U. Yechiali, P. Naor
Computer Science, Mathematics
Oper. Res.
1 June 1971

This paper studies a two-level modification of the M/M/1 queuing model where the rate of arrival and the service capacity are subject to Poisson alternations. Expand

Priorities in M/G/1 queue with server vacations

O. Kella, U. Yechiali
Computer Science
1 February 1988

Utilization of idle time in an M/G/1 queueing system Management Science 22

Y. Levy, U. Yechiali
Computer Science, Materials Science
1 October 1975

A vacuum pump having a mechanically operated plunger or piston which is so arranged as to either fully open or fully close a supply of compressed gas. The compressed gas flows through a venturi tube… Expand

Queues with system disasters and impatient customers when system is down

U. Yechiali
Computer Science
Queueing Syst. Theory Appl.
1 August 2007

We study the case where the system suffers random disasters, resulting in the loss of all customers present. Expand

Cyclic reservation schemes for efficient operation of multiple-queue single-server systems

O. Boxma, H. Levy, U. Yechiali
Computer Science
Ann. Oper. Res.
1 April 1992

We study two new cyclic reservation schemes for the efficient operation of systems consisting of a single server and multiple queues. Expand

Infinite-server queues with system's additional tasks and impatient customers

E. Altman, U. Yechiali
Mathematics
1 October 2008

A system is operating as an M/M/∞ queue. However, when it becomes empty, it is assigned to perform another task, the duration U of which is random. Customers arriving while the system is unavailable… Expand

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