A two-step method for monitoring normally distributed multi-stream processes in high dimensions

Ahmadi‐Javid, Amir; Ebadi, Mohsen

doi:10.1080/08982112.2020.1786118

Cited by 9 publications

(2 citation statements)

References 36 publications

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“…As it has been shown, the problem arises already at the stage of definition and requires referring to the theory of political science and economics. Due to the breadth of the field and the impact of transport on other areas of the economy, the subject cannot be considered in isolation from the policies of the European Union, including primarily social policy [1,15,19].…”

Section: Discussionmentioning

confidence: 99%

Proposal of methodology for customers relationships establishing in terms of transport services

Hajduk,

Poliak

2023

The Archives of Automotive Engineering – Archiwum Motoryzacji

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Currently, the market is focused not only on the quality of services, but also on customer comfort, requiring service providers to constantly modernize their methods of operation. Due to the progressing digitization of various areas of business activity, it is necessary to implement current available technological aids in order to maintain competitiveness and build long-term relationships with the client. Delivering products to the point of consumption is a very important element in the supply chain, and transport companies act as both intermediaries and service providers. The article is a proposal of a methodological solution for companies dealing with transport services in the field of building long-term relationships with the client using modern technologies and methodologies. The results show the strategies and systems with which transport companies can strive to build a competitive offer in the supply chain. As a target solution, it was proposed to use solutions such as Customer Relationship Management (CRM) in the process of developing a methodology for building relationships with customers in the area of transport services. The development and functioning of the global economy market is not possible without a net-work of transport connections-communication infrastructure, as well as a service provider-consumer relationship.

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Section: Discussionmentioning

confidence: 99%

Proposal of methodology for customers relationships establishing in terms of transport services

Hajduk,

Poliak

2023

The Archives of Automotive Engineering – Archiwum Motoryzacji

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“…They are the distinguishing features of the quality of the transport service, i.e. [2]: flexibility, quick and easy transfers (in the segment of collective services), booking services (electronic tickets, seat reservation, car rental, etc. ), service continuity in different countries (continents), finan-cial stability, the possibility of rebooking, good reputation of the carrier, the policy of the airline's alliance (in the case of air transport).…”

Section: Quality Measurement In the Transport Of Goodsmentioning

confidence: 99%

Quality of transport services and customer satisfaction measurement

Hajduk

Poliak

Gašparík

2022

The Archives of Automotive Engineering – Archiwum Motoryzacji

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The development and functioning of the global economy market is not possible without a net-work of transport connections - communication infrastructure, as well as a service provider - consumer relationship. Transport is a technological process of the distance of people, objects or energy. Knowledge of the logistics system and its processes is essential for fully functioning and effective logistic activities in the field of goods turnover. The functioning of enterprises operating on modern world markets without effective logistics is almost impossible, hence the constant search for tools to improve its processes, which provide added value for the customer, while maintaining the cost-quality ratio of the services provided. Building an appropriate relationship with the customer, taking care of customer service standards and professional customer service is a long-term and developmental process, which is nothing else than a mutual benefit transaction. Customer satisfaction should be constantly tested in terms of satisfaction and loyalty as well as the perception of the standards introduced and services offered. The customer satisfaction survey is used to illustrate the perception of the conditions that guide the customer. This article describes the methods of measuring customer satisfaction in the point of view quality of transport services.

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On monitoring high‐dimensional processes with individual observations

Ebadi,

Chenouri,

Steiner

2024

Naval Research Logistics

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Modern data collecting methods and computation tools have made it possible to monitor high‐dimensional processes. In this article, we investigate phase II monitoring of high‐dimensional processes when the available number of samples collected in phase I is limited in comparison to the number of variables. A new charting statistic for high‐dimensional multivariate processes based on the diagonal elements of the underlying covariance matrix is introduced and we propose a unified procedure for phases I and II by employing a self‐starting control chart. To remedy the effect of outliers, we adopt a robust procedure for parameter estimation in phase I and introduce the appropriate consistent estimators. The statistical performance of the proposed method is evaluated in phase II using the average run length (ARL) criterion in the absence and presence of outliers. Results show that the proposed control chart scheme effectively detects various kinds of shifts in the process mean vector. Finally, we illustrate the applicability of our proposed method via a manufacturing application.

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A two-step method for monitoring normally distributed multi-stream processes in high dimensions

Cited by 9 publications

References 36 publications

Proposal of methodology for customers relationships establishing in terms of transport services

Proposal of methodology for customers relationships establishing in terms of transport services

Quality of transport services and customer satisfaction measurement

On monitoring high‐dimensional processes with individual observations

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