A study of scheduling under the theory of constraints

Golmohammadi, Davood

doi:10.1016/j.ijpe.2015.03.015

Cited by 40 publications

(21 citation statements)

References 31 publications

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“…Imperatives can be internal or outside to the structure. At times, the internal systems can cause constraints whereas on some instances external factors may lead to constraints [62]. Resources will and have never been sufficient and a struggle between resources needed and production is a challenge to most organizations.…”

Section: The Oretical Frameworkmentioning

confidence: 99%

Relationship between ISO 9001 Certification and the Number of NonConformities Identified during System Audits in Selected Public Universities in Kenya

Chumba¹,

Sang²,

Kibett³

et al. 2019

IJEMR

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The quest for International Standard Organization (ISO) 9001 certification as an international quality tool has been embraced for process improvement and positive perception by customers. With ISO 9001 certification, an institution is anticipated to offer exemplary goods or services that meet client prerequisites, needs and expectations thus enhance organizational performance. As evident in previous studies, despite ISO 9001 certification, cases on wastages, missing student marks and time wastage were indicators of non-conformance. There was no clear evidence of past studies on the relationship between ISO 9001 certification and organizational performance with special interest on number of non-conformities identified during systems audit being a component of organizational performance. The purpose of the study was therefore to establish the relationship between ISO 9001 certification and the number of non-conformities identified during system audits in selected public Universities in Kenya. Explanatory research design was used in the study. The research targeted a population of 433 respondents from which a sample size of 205 respondents was selected using purposive and simple random sampling designs. A questionnaire was used to collect data. To answer the objectives of the study, simple linear regression analysis was performed. From the model, (R 2 = .600) shows that ISO 9001 certification account for 60% variation in number of nonconformities identified during system audits. There was a positive significant relationship between ISO 9001 certification and number of non-conformities identified during system audits (β=0.611 and p <0.05). Therefore, a unit increase in ISO 9001 certification led to reduced number of non-conformities identified during system audits. The ISO 9001 certification had a significant influence on the number of non-conformities identified during system audits. For every adoption of the ISO 9001 certification in public universities the number of nonconformities identified during system audits reduced. The study concludes that ISO 9001 certification had a significant positive influence on the number of non-conformities identified during system audits. Thus, for every adoption of the ISO 9001 certification in public universities the number of non-conformities identified reduced. The study recommends that there is need for management of public universities through the department of quality management to address the non-conformities raised during system audits, need for university management to raise awareness on the importance of standardization and conformity assessment and to entrench the culture of quality in the Kenyan society by promoting practical usage of standards and development of quality related curricula in public universities.

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Section: The Oretical Frameworkmentioning

confidence: 99%

Relationship between ISO 9001 Certification and the Number of NonConformities Identified during System Audits in Selected Public Universities in Kenya

Chumba¹,

Sang²,

Kibett³

et al. 2019

IJEMR

View full text Add to dashboard Cite

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“…Alsmadi et al (2014) suggest starting from financial record analysis whilst aiming at identifying constraints, they are recognised when the operation of the system is tied to spent costs. Another approach to look for constraints is by simulating a system model (Golmohammadi, 2015;Costas et al, 2015). This approach refers for to capacity in bottlenecks and exploits a multiproduct production/logistic system, the point is how to determine the most favourable structure of the manufactured assortment.…”

Section: Theory Of Constraints As the Basis Of Manufacturing System Dmentioning

confidence: 99%

The Case Study of Bottlenecks Identification for Practical Implementation to the Theory of Constraints

Urban

Rogowska

2018

Multidisciplinary Aspects of Production Engineering

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According to the Theory of Constraints by Goldratt system bottlenecks are key to improving productivity and profitability of the entire production system. An important issue in the practical application of this theory is to identify bottlenecks in the system. The aim of this paper is to develop practical steps to identify bottlenecks in the production system characterised by a homogeneous flow. The paper includes a case study which shows six steps that allowing to specify not only the first bottleneck of the system but to develop a comprehensive plan for removing bottlenecks.

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“…La TOC desarrollada por los profesores Goldratt y Cox (1984) (Golmohammadi, 2015) representa una gran innovación en el ámbito de la producción. Goldratt sugiere que el principal propósito que tiene una organización, ahora y en el futuro, es hacer dinero y generar ganancias (Costas, Ponte, de la Fuente, Pino, y Puche, 2015) (Aguilera, 2000), esto quiere decir que la TOC se basa en la teoría de sistemas, siendo este un sistema teleológico, es decir, que tiene un objetivo o propósito.…”

Section: Revisión Conceptual De La Teoría De Las Restricciones (Toc)unclassified

Aplicación de los modelos de simulación en entornos productivos bajo la metodología de teorías de las restricciones

Uribe-Gómez

Quintero-Ramírez

2017

Rev. CEA

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Cómo citar / How to cite Uribe-Gómez, J. A. y Quintero-Ramírez, S. (2017). Aplicación de los modelos de simulación en entornos productivos bajo la metodología de teorías de las restricciones. Revista CEA, 3(6), 11-27. Resumen La Teoría de restricciones permite identificar dificultades en los procesos productivos a través de lo que se ha denominado cuellos de botella, y bajo una perspectiva rigurosa y sistemática busca la solución óptima para lograr el objetivo empresarial, el cual es generar dinero. El objetivo primordial de este trabajo fue evidenciar cómo el proceso sistemático de la teoría de restricciones, puede ser replicado de manera simple bajo la perspectiva de la modelación y simulación de los comportamientos que circunscriben dicha teoría. La simulación, en este caso, se utiliza como una metodología para ejemplificar y demostrar el pensamiento contra intuitivo de esta teoría, que emerge debido a que las empresas aún consideran los inventarios y su acumulación, como parte fundamental para la generación de beneficios en las organizaciones. En términos generales, con el modelo de simulación se logró demostrar que, reduciendo los inventarios en proceso de una cadena productiva, el comportamiento de los gastos operativos disminuye, generando así un mayor flujo de dinero a través de la empresa.Palabras clave: simulación, modelos, software, metodología, manufactura, producción. AbstractThe Theory of Constraints enables to identify difficulties, called bottlenecks, in production processes. It seeks to find an optimal solution from a thorough and systematic perspective to achieve the business objective, generating profit. This work aims to show the way the systematic process of the Theory of Constraints can be replicated in a simple way by means of modeling and simulating the behaviors that circumscribe this theory. In this case, simulation is the selected method to exemplify and demonstrate the counter-intuitive approach of this theory. The latter has been

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A study of scheduling under the theory of constraints

Cited by 40 publications

References 31 publications

Relationship between ISO 9001 Certification and the Number of NonConformities Identified during System Audits in Selected Public Universities in Kenya

Relationship between ISO 9001 Certification and the Number of NonConformities Identified during System Audits in Selected Public Universities in Kenya

The Case Study of Bottlenecks Identification for Practical Implementation to the Theory of Constraints

Aplicación de los modelos de simulación en entornos productivos bajo la metodología de teorías de las restricciones

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