scholarly journals Control Chart in the Service Industry: A Case Study in a University Health Clinic

2020 ◽  
Vol 1 (4) ◽  
pp. 436-441
Author(s):  
Johan K. Runtuk
Keyword(s):  
Control Chart ◽  
Control Charts ◽  
Processing Time ◽  
Service Industry ◽  
Services Quality ◽  
Service Level ◽  
Health Clinic ◽  
Capability Analysis

This study analyzes the service quality of a University health clinic in Bekasi, WestJava, Indonesia. A control chart and capability analysis will be employed to analyzethe services' quality, especially registration processing time and the drug defect permonth. This study uses the CUSUM and EWMA control charts for detecting thesmall shifts in the processing time. The findings revealed that the current processesare in control and capable of meeting the current service level. There is only onepoint outside the upper limit. But it can be ignored/deleted since the assignablecause causes that event. This study gives direction for the Clinic to improve theservice quality.

SURVEILLANCE OF DIABETES PREVALENCE RATE THROUGH THE DEVELOPMENT OF A MARKOV-BASED CONTROL CHART

2012 ◽  
Vol 12 (04) ◽  
pp. 1250083
Author(s):  
PERSHANG DOKOUHAKI ◽  
RASSOUL NOOROSSANA
Keyword(s):  
Control Chart ◽  
Control Charts ◽  
High Performance ◽  
Discrete Data ◽  
Correlated Data ◽  
Statistical Process ◽  
Control Charting ◽  
Attribute Quality ◽  
Related Process

In the field of statistical process control (SPC), usually two issues are addressed; the variables and the attribute quality characteristics control charting. Focusing on discrete data generated from a process to be monitored, attributes control charts would be useful. The discrete data could be classified into two categories; the independent and auto-correlated data. Regarding the independence in the sequence of discrete data, the typical Shewhart-based control charts, such as p-chart and np-chart would be effective enough to monitor the related process. But considering auto-correlation in the sequence of the data, such control charts would not workanymore. In this paper, considering the auto-correlated sequence of X1, X2,…, Xt,… as the sequence of zeros or ones, we have developed a control chart based on a two-state Markov model. This control chart is compared with the previously developed charts in terms of the average number of observations (ANOS) measure. In addition, a case study related to the diabetic people is investigated to demonstrate the applicability and high performance of the developed chart.

Improving Phase I Monitoring of Dirichlet Regression Profiles

2018 ◽  
Vol 25 (06) ◽  
pp. 1850030 ◽  
Author(s):  
Hourieh Foroutan ◽  
Amirhossein Amiri ◽  
Reza Kamranrad
Keyword(s):  
Phase I ◽  
Control Chart ◽  
Control Charts ◽  
Compositional Data ◽  
Ratio Test ◽  
Statistical Process ◽  
Explanatory Variables ◽  
Monitoring Procedure ◽  
Multivariate Control

In most statistical process control (SPC) applications, quality of a process or product is monitored by univariate or multivariate control charts. However, sometimes a functional relationship between a response variable and one or more explanatory variables is established and monitored over time. This relationship is called “profile” in SPC literature. In this paper, we specifically consider processes with compositional data responses, including multivariate positive observations summing to one. The relationship between compositional data responses and explanatory variables is modeled by a Dirichlet regression profile. We develop a monitoring procedure based on likelihood ratio test (lrt) for Phase I monitoring of Dirichlet regression profiles. Then, we compare the performance of the proposed method with the best method in the literature in terms of probability of signal. The results of simulation studies show that the proposed control chart has better performance in Phase I monitoring than the competing control chart. Moreover, the proposed method is able to estimate the real time of a change as well. The performance of this feature is also investigated through simulation runs which show the satisfactory performance. Finally, the application of the proposed method is illustrated based on a real case in comparison with the existing method.

scholarly journals Process Capability Analysis in a Polypropylene Bag Manufacturing Company

2021 ◽  
Vol 25 (8) ◽  
pp. 1477-1482
Author(s):  
O.F. Odeyinka ◽  
F.O. Ogunwolu ◽  
O.P. Popoola ◽  
T.O. Oyedokun
Keyword(s):  
Control Charts ◽  
Process Capability ◽  
Production Plant ◽  
Specification Limit ◽  
Process Capability Analysis ◽  
Capability Analysis ◽  
Vertically Aligned ◽  
Lower Specification Limit ◽  
And Control

Process capability analysis combines statistical tools and control charts with good engineering judgment to interpret and analyze the data representing a process. This work analyzes the process capability of a polypropylene bag producing company. The case study organization uses two plants for production and data was collected over a period of nine months for this study. Analysis showed that the output spread of plant 1 was greater than the specification interval spread which implies poor capability. There are non-conforming parts below the Lower Specification Limit (LSL: 500,000 metres) and above the Upper Specification Limit (USL: 600,000 metres) and that the output requires improvement. Similarly, the capability analysis of plant 2 shows that the overall output spread is greater than the specification interval spread (poor capability). The output centre in the specification and overall interval are vertically aligned, thus specifying that the output from plant 2 is also process centered and requires improvement. Recommendations were made to improve the outputs from each production plant.

Case Study II

2009 ◽  
pp. 243-268
Author(s):  
Matthew Guah
Keyword(s):  
Airline Industry ◽  
Business Strategy ◽  
Direct Relationship ◽  
Service Industry ◽  
Performance Indicator ◽  
New Technology ◽  
Service Level ◽  
Commercial Airline ◽  
Selection Factors

VLITP can shift the direction of organizations by introducing new systems and emerging technologies that can serve as a trigger for change to the entire business strategy of an organization. Using VLITP simply for creating new possibilities, new markets, or enabling existing alternatives to be reachable can also trigger much needed change. The implementation of a new technology like RFID implies a direct relationship between business and IT—something that has become of increased importance in the last decade. Airlines are a vital part of the service industry, focusing on the transportation of people, their luggage, and goods from one point to another. RFID brought into the airline industry a system that tracks the location of passengers’ luggage, directly impacting the level of service an airline can provide its customer. RFID introduced new possibilities in luggage handling that are beginning to impact the entire airline industry. In the commercial airline industry, where fiercely competition has been well established, customer satisfaction and service level are important selection factors for passengers. Like its predecessor—the barcode system—RFID tracks luggage and is used to identify which baggage belongs to which customer but using a different technique to do so. RFID, being a lot more accurate then the barcode system, makes the decision by an airline to implement it a move to establish its critical performance indicator.

Design of Quality Aspects in Service Oriented Architecture through Service Level Agreements

2011 ◽  
pp. 1-21
Author(s):  
Marco Massarelli ◽  
Claudia Raibulet ◽  
Daniele Cammareri ◽  
Nicolò Perino
Keyword(s):  
Service Oriented Architecture ◽  
Service Level ◽  
Application Domain ◽  
Service Level Agreements ◽  
Actual Case ◽  
Service Oriented Architectures ◽  
Quality Aspects ◽  
Service Oriented

This chapter gives a solution to design Service Oriented Architectures which defines and manages Service Level Agreements to enforce Quality of Services and achieves adaptivity at runtime. The validation of this proposed approach is performed through an actual case study in the context of the multimedia application domain.

Improving Benchmarking Student Learning Outcomes Using Repetitive Sampling Control Chart

2016 ◽  
Vol 13 (10) ◽  
pp. 7036-7039
Author(s):  
Nawal G Alghamdi ◽  
Muhammad Aslam
Keyword(s):  
Control Chart ◽  
Control Charts ◽  
Assessment Tool ◽  
Educational Programs ◽  
Management Program ◽  
Pass Rate ◽  
Shewhart Control Charts ◽  
Process Understanding ◽  
Shewhart Control

In recent years research on the application of Shewhart control charts in evaluating the performance of educational programs have gain sufficient grounds. These control charts aid in process understanding and identify changes that indicate either improvement or deterioration in quality of the program. Current research proposes control charts using repetitive sampling on the data taken from Weber State University’s construction management program, which uses the Associate Constructor Level 1 exam as an assessment tool. A code was developed to run the proposed control charts. Both the traditional and proposed charts were plotted using R software. The results indicate that the proposed control charts are comparatively more efficient than the traditional control charts in assessment of educational programs and minimizing false positives. At the end comparison of the benchmark—pass rate and traditional control chart with the proposed control chart has also been elucidated so that the proposed control charts may be readily employed in evaluating any educational program by academic counsellors.

Using service-level indices to manage the quality of computing services: A case study

1992 ◽  
Vol 18 (2) ◽  
pp. 139-145 ◽  
Author(s):  
Armin Roeseler ◽  
Anneliese von Mayrhauser
Keyword(s):  
Service Level ◽  
Computing Services

scholarly journals The Effect of Service Quality in the Formation of Brand Image: Fitness Center in Bekasi, West Java, Indonesia

2020 ◽  
Vol 7 (11) ◽  
pp. 119
Author(s):  
Alfia Pantjoro
Keyword(s):  
Service Quality ◽  
Quantitative Research ◽  
Service Industry ◽  
Brand Image ◽  
Services Quality ◽  
Image Formation ◽  
Quality Of Services ◽  
Quantitative Research Methods ◽  
Fitness Center

For companies that are engaged in the service industry, quality of service is one of important factor in establishing a positive brand image. The purpose of this study is to know (1) whether or not the effect of services quality on brand image formation of Gold's Gym Bekasi, (2) direction and magnitude of services quality on brand image formation of Gold's Gym Bekasi. The theory used in this research is the theory of services quality and brand image formation theory. This study uses quantitative research methods and involves as many as 96 respondents who have become members and have exercised in Gold's Gym Grand Metropolitan Mall Bekasi. The results found that there is an influence of 76% between services quality and brand image formation of the fitness center. This study shows the direction of positive influence, where if the quality of services is improved then the brand image formation of the fitness center will also increase by 0.571. The results of this study states that the service quality of services affects the brand image formation of the Gold's Gym Bekasi.

scholarly journals POSSIBILITIES FOR IMPROVING THE SERVICE QUALITY OF SMALL HOTELS IN NOVOSIBIRSK

2017 ◽  
Vol 11 (4) ◽  
pp. 168-180
Author(s):  
Лидия СТРЕБКОВА ◽  
Lydia STREBKOVA
Keyword(s):  
Service Quality ◽  
Corporate Culture ◽  
Business Processes ◽  
Services Quality ◽  
Price Policy ◽  
Service Level ◽  
Successful Operation ◽  
Fast Adaptation ◽  
Major Factors

The article considers the concept of hotel services quality, and pays special attention to the fact that service level depends on the focusing of staff on customer. An important condition for the successful operation of a small hotel is its orientation towards the consumer, consisting in enhance the perceived value of the service, in meeting its needs and, as a result, in achieving customer loyalty. Focusing of employees on customer is one of major factors of ensuring efficiency of activities and competitiveness of hotel. The author researches the quality assessment of the small hotels services in Novosibirsk. The main problems in rendering hotel services revealed by author are related to technical, functional and social service quality. Virtually all aspects of activities of small hotels have shortcomings showing the lack of system approach to management, despite the size and an organizational structure of enterprises which assume mobility and flexibility of management, fast adaptation to a market situation, requests of consumers, a high susceptibility to innovations. The author offers the recommendations for improving activities of small hotels, implementation of which will allow to increase hotel services quality. The management of small hotels of the Novosibirsk should pay attention to the following parameters: material and technical resources, quality standards, corporate culture, corporate style, staff policy, technologies of servicing, organization of business processes, range of services, price policy, and marketing communications. The service quality improvement should be complex and cover all activities of hotel. To hold the client, the enterprises of the industry of hospitality need to motivate the employees, to improve quality of the provided services, raising degree of a customer satisfaction and creating its loyalty of the organization.

scholarly journals Assessment of process stability and capability in a manufacturing organization: a case study

2021 ◽  
Vol 343 ◽  
pp. 05011
Author(s):  
Carmen Simion
Keyword(s):  
Quality Control ◽  
Control Charts ◽  
Statistical Quality Control ◽  
Statistical Tool ◽  
Statistical Process ◽  
Monitoring Process ◽  
Capability Analysis ◽  
Process Output ◽  
Manufacturing Organization

Quality is considered asthe principal factor that determines the long-termsuccess or failure of any organization. Organizations perform quality control by monitoring process output using Statistical Quality Control, performed as part of the production process (Statistical Process Control, SPC) or as a final quality control check (Acceptance Sampling).SPC is a major quality management statistical tool and its instruments (control charts and capability analysis) are applied to virtually any type of organization (manufacturing, services or transactions - for example, those involving data, communications, software, or movement of materials). The aim of this paper is to present a case study, realized in a manufacturing organizationfrom Sibiu, for a new product used in the automotive industry to check its conformance to designed requirements. The output data were analyzed using statistical analysis software Minitab.

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