| Queue Discipline | Description | Advantages | Disadvantages |
|---|---|---|---|
| First-Come, First-Served (FCFS) | Serves customers in the order they arrive. | Simple, fair for most scenarios. | Can cause long delays if service times vary greatly. |
| Last-Come, First-Served (LCFS) | Serves the most recent arrival first. | Quick service for the most recent arrivals. | Unfair to customers who have waited longer. |
| Priority Queueing | Customers are served based on priority levels. | Ensures urgent or high-priority customers are served first. | Low-priority customers may experience delays (starvation). |
| Shortest Job First (SJF) | Serves customers with the shortest service time first. | Minimizes average waiting time. | Can lead to starvation for long tasks. |
| Round Robin (RR) | Customers are served in fixed time slices. | Fair distribution of resources. | Can be inefficient if time slices are too small or too large. |
| Shortest Remaining Processing Time (SRPT) | Serves customers with the least remaining service time. | Minimizes total waiting time. | Can cause starvation for long tasks. |
| Fair Queueing | Resources are allocated equally among all customers. | Fair allocation of resources. | May not be the most efficient for tasks with different priorities. |
| Preemptive Queueing | Higher-priority customers can preempt lower-priority ones. | Ensures high-priority tasks are prioritized. | May lead to frequent interruptions or context switching. |
| Non-Preemptive Queueing | No preemption; once a customer starts service, they are not interrupted. | Simpler, fairer for non-interruptive scenarios. | Can result in delays for other tasks waiting for service. |
Data Visualization
0/6
Probability Distributions
Probability Distribution – Binomial, Poisson, Normal, and Exponential
0/3
Operations Management Basics
0/6
Statistics
0/7
Transportation
0/3
Facility Location and Layout
Site Selection and Analysis, Layout Design and Process
0/3
Concept, Measures of Central Tendency and Dispersion,
Concept, Measures of Central Tendency and Dispersion,
0/7
Probability Distribution – Binomial, Poisson, Normal, and Exponential
Probability Distribution – Binomial, Poisson, Normal, and Exponential
0/4
Data Collection & Questionnaire Design
Data Collection & Questionnaire Design
Sampling: Concept, Process, and Techniques
Sampling: Concept, Process, and Techniques
0/2
Hypothesis Testing: Procedure
Hypothesis Testing: Procedure
0/2
T, Z, F, Chi-square tests
T, Z, F, Chi-square tests
0/2
Correlation and Regression Analysis
Correlation and Regression Analysis
0/4
Operations Management: Role and Scope
Operations Management: Role and Scope
0/1
Facility Location and Layout: Site Selection and Analysis, Layout Design and Process
Facility Location and Layout: Site Selection and Analysis, Layout Design and Process
Enterprise Resource Planning: ERP Modules, ERP Implementation
Enterprise Resource Planning: ERP Modules, ERP Implementation
Scheduling: Loading, Sequencing, and Monitoring
Scheduling: Loading, Sequencing, and Monitoring
0/4
Quality Management and Statistical Quality Control, Quality Circles, Total Quality Management – KAIZEN, Benchmarking, Six Sigma
Quality Management and Statistical Quality Control, Quality Circles, Total Quality Management – KAIZEN, Benchmarking, Six Sigma
0/3
ISO 9000 Series Standards
ISO 9000 Series Standards
Operation Research: Transportation, Queuing Decision Theory, PERT/CPM.
Operation Research: Transportation, Queuing Decision Theory, PERT/CPM.
0/6