phd thesis inventory management

• Help & FAQ

Inventory management systems: Control and information issues

• Research Group: Operations Research
• Econometrics and OR

Research output : Thesis › Doctoral Thesis

Access to Document

• Inventory management systems Final published version, 48.2 MB

Fingerprint

• Information Issue Keyphrases 100%
• System Information Keyphrases 100%
• Inventory System Keyphrases 100%
• System Control Keyphrases 100%
• Mathematical Modeling Mathematics 100%
• Control System Mathematics 100%
• Inventory Theory Mathematics 100%
• System Management Computer Science 100%

T1 - Inventory management systems

T2 - Control and information issues

AU - Janssen, F.B.S.L.P.

N2 - This dissertation addresses the management of inventory systems. The thesis starts with an exposition on mathematical models that can be used in inventory theory. Then we deal with some information issues related to the demand process. Namely, how to control products that have intermittent demand. Moreover, we investigated the impact of data collection on the customer performance. Next, we investigated to what extend multiple-sourcing can lead to improvements of the inventory system. Finally two demand management strategies are investigated for smoothing demand. The first re-routes large customer orders to alternative stockpoint, whereas the second strategy splits a customer order in a time-phased delivery scheme.

AB - This dissertation addresses the management of inventory systems. The thesis starts with an exposition on mathematical models that can be used in inventory theory. Then we deal with some information issues related to the demand process. Namely, how to control products that have intermittent demand. Moreover, we investigated the impact of data collection on the customer performance. Next, we investigated to what extend multiple-sourcing can lead to improvements of the inventory system. Finally two demand management strategies are investigated for smoothing demand. The first re-routes large customer orders to alternative stockpoint, whereas the second strategy splits a customer order in a time-phased delivery scheme.

M3 - Doctoral Thesis

SN - 9056680412

T3 - CentER Dissertation Series

PB - CentER, Center for Economic Research

CY - Tilburg

• Bibliography
• More Referencing guides Blog Automated transliteration Relevant bibliographies by topics
• Automated transliteration
• Relevant bibliographies by topics
• Referencing guides

Advances in Inventory Management Dynamic Models Defended on Thursday, 24 June 2010

In this study, we develop and analyze models incorporating some of the dynamic aspects of inventory systems. In particular, we focus on two major themes to be analyzed separately: nonstationarity in demand rate and unfixed purchasing prices.

In the first part of the study, we consider an inventory system with a nonstationary demand rate. In particular, we consider critical service parts subject to obsolescence. Inventory management of such items is notoriously difficult due to their slow moving character and the high risks involved when they are not available or no more needed.

In practice, there is a need for policies tailored for service parts taking these aspects into account and easy to implement. We propose an obsolescence based control policy and investigate its performance and impact on costs. We find that ignoring obsolescence in the control policy increases costs significantly and early adaptation of base stock levels can lead to important savings.

In the second part of the study, we consider an inventory system where the supplier offers price discounts at random points in time. We extend the literature by assuming a more general backordering structure. That is, when the system is out of stock, an arriving customer either decides to be backlogged with a certain probability or leaves the system and becomes a lost sale.  We derive equations to calculate optimal policy parameters and demonstrate that allowing backorders in face of random deal offerings can result in considerable savings.

inventory management, nonstationary demand, obsolescence, service parts, base stock policy, advance policy change, excess stock, installed base, random deal offerings, price discounts, partial backorders

Related PhD Tracks

Doctoral Thesis

Supervisory Team

• Co-promotor

Committee Members

• © 2024 Erasmus Universiteit Rotterdam
• Privacy statement

Accessibility Links

• Skip to content
• Skip to search IOPscience
• Skip to Journals list
• Accessibility help
• Accessibility Help

Click here to close this panel.

Purpose-led Publishing is a coalition of three not-for-profit publishers in the field of physical sciences: AIP Publishing, the American Physical Society and IOP Publishing.

Together, as publishers that will always put purpose above profit, we have defined a set of industry standards that underpin high-quality, ethical scholarly communications.

We are proudly declaring that science is our only shareholder.

ABC Analysis: A Qualitative Case Study on Inventory Management in Giant Superstore Taman Connaught, An Outlet Of GCH Retail (Malaysia) SDN. BHD.

Shamani Jayakumaran 1 , Wong Zi Shan 1 and Dazmin Daud 1

Published under licence by IOP Publishing Ltd IOP Conference Series: Materials Science and Engineering , Volume 780 , 2019 2nd International Symposium on Traffic Transportation and Civil Architecture (ISTTCA 2019) 13-15 December 2019, Chengdu, China Citation Shamani Jayakumaran et al 2020 IOP Conf. Ser.: Mater. Sci. Eng. 780 072016 DOI 10.1088/1757-899X/780/7/072016

Article metrics

3151 Total downloads

Share this article

Author e-mails.

[email protected]

Author affiliations

1 Faculty of Business and Information Science, UCSI University, Jalan Menara Gading, 56000 Cheras, Kuala Lumpur, Malaysia

Buy this article in print

This study aimed to understand the inventory management of Giant Superstore Taman Connaught. The study was qualitative study that explored the ABC analysis efficiency of inventory management in Giant Superstore, Taman Connaught an outlet of GCH Retail (Malaysia) SDN. BHD. ABC analysis was one method to manage the inventory management who good position was arranged according to the category such as A category product was high in value but low in quantity and C category product was low in value and high in quantity. The elements that were selected as significance included the product consumption rate, carrying cost and replenishment product lead time which contributed toward ABC analysis of inventory management efficiency in Giant Superstore. The study indicated dissimilarities in controlling the inventory in Giant superstore. The study found Giant had used POM.net in their inventory management since this software from ABC tool. HR manager needs to recruit quality skilled workers that have proper qualifications and acceptable for particular job duties.

Export citation and abstract BibTeX RIS

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence . Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

• Yekaterinburg
• Novosibirsk
• Vladivostok
• Tours to Russia
• Practicalities
• Russia in Lists

Rusmania • Deep into Russia

• Rostov Region

Azov stands on the delta of the River Don as it flows into the Sea of Azov. Due to its strategic significance it has been inhabited for centuries by various peoples and it only became part of Russia in the 18th century upon the efforts of Peter the Great who desired access to the Black Sea via Azov. Many of the city’s historical sights are associated with this period. The city can be easily visited from Rostov-on-Don .

Plan your next trip to Russia

Ready-to-book tours.

Your holiday in Russia starts here. Choose and book your tour to Russia.

REQUEST A CUSTOMISED TRIP

Looking for something unique? Create the trip of your dreams with the help of our experts.

Engineering, Art & Tech

Mr. kaconco james successfully defended his phd thesis.

Mr. Kaconco James successfully defended his PhD thesis at a public defense session held at the College of Engineering, Design, Art and Technology (CEDAT).

His thesis was titled; Master Production Scheduling, Total Quality Management and Blood Production Towards Blood Transfusion Sustainability in Uganda.

This study investigated the relationship between master production scheduling, total quality management, blood production, and transfusion sustainability in Ugandan blood banks. It aimed to address the challenges of blood safety and shortages in healthcare, leading to canceled or postponed transfusions and patient fatalities.

The study used was correlational and cross-sectional in nature with a pragmatic paradigm and a mixed-method strategy. It surveyed seven regional and seven university teaching hospital blood banks, using random and purposive sampling. Data came from self-administered questionnaires and interviews with key informants. Data analysis used SPSS20 and AMOS23 to determine relationships among variables. Qualitative data was analyzed using Nvivo software. Pilot tests ensured questionnaire and interview guide validity and reliability.

Findings showed a significant model for the relationship between master production scheduling and blood transfusion sustainability. Demand and supply significantly related to transfusion sustainability, while perishability had a positive but not significant relationship. Surprisingly, total quality management did not mediate the master production scheduling-blood transfusion sustainability link; instead, blood production fully mediated it. When considering both total quality management and blood production as serial mediators, both played a partial mediating role. Qualitative findings aligned with these results, highlighting various strategies used by Ugandan blood banks to enhance sustainability.

This study has managerial implications, emphasizing the importance of factors such as blood demand, staff involvement, continuous improvement, customer-centric approaches, and efficient bloodstock management in enhancing transfusion sustainability. Recommendations for policymakers include establishing a fund to support blood banks for knowledge dissemination and capacity development. They should also enhance annual evaluation, recognition, and awards for blood donors, individuals, and partners dedicated to transfusion sustainability. Establishing a dedicated unit under UBTS for compliance monitoring is recommended. Blood bank managers should invest in staff training, seek expert consultation on transfusion sustainability, and recognize and reward employees and teams demonstrating a strong commitment to transfusion sustainability.

The School of Engineering welcomes graduate students

You may like

Incoming graduate students in the School of Engineering have been urged to work towards timely completion of the two-year program by adhering to the provisions contained in the graduate handbook. Students were further encouraged to attend the lectures, undertake all assignments and ensure that set deadlines are met.

The Deputy Principal CEDAT, Assoc. Prof. Kizito Maria Kasule presided over the meeting where the students were congratulated upon getting enrolled through a very competitive process.  In his remarks, the Deputy Principal encouraged the students to work towards gaining skills that would enable them get self- employed. He cautioned them against engaging in any form of malpractice which he said was not only punishable but could lead to dismissal and cancellation of the academic papers. Kizito further cautioned them against the vice of sexual harassment among students and staff.

During the orientation meeting held on Wednesday 14 th August 2024, the Dean of the School of Engineering, Dr. Dorothy Okello informed the incoming students that the competition for the limited slots of graduate studies was on the rise each passing year, and advised them to utilize the opportunity before them by taking their studies with the seriousness it deserves in order to complete timely. She said it was only 40% of the applicants that were admitted, and therefore the college had high expectations from them as the best of all the applicants.  She encouraged them to join research groups, look out for opportunities like student exchange programs involving international collaboration in order to expand their horizons.

The graduate students were reminded that by virtue of enrolling on a masters’ programs, graduate students were researchers and that they needed to start thinking of designing software and prototypes.  For them to progress, they were encouraged to cultivate the right mindset and attitude, utilize all the available sources of knowledge as one of the ways through which they were to undertake research and complete their program timely.

Other staff that addressed the students included, the Head of Department, Electrical and Computer engineering, Dr. Abubaker Matovu Wasswa, the Head of the Civil and Environmental Engineering Department, Dr. Robinah Kulabako, the Head of the Mechanical Engineering Department, Dr. Peter Olupot, Dr. Edmund Mugumya, Prof Lating, and the School Registrar.

The graduate students enrolled on various programs in the School of Engineering, including Masters in power systems engineering, Masters in mechanical engineering, Masters in civil and environmental engineering.

This academic year 2024/2025, the University opened its gates to freshmen and women on 3 rd  August 2024. Inducting students into the University commenced on Monday, 5 th  August 2024 with a University-wide orientation organized by the Office of the Academic Registrar and conducted in the Freedom Square.

Makerere signs MoU with EACOP Ltd.

Makerere University  signed a Memorandum of Understanding (MoU) with the East African Crude Oil Pipeline (EACOP) Ltd to create a platform for finalist and recently graduated students to undertake internships and industrial training with EACOP.  The pact provides a framework that will guide the collaboration between the two entities.

The Vice-Chancellor, Prof. Barnabas Nawangwe signed on behalf of Makerere University while Martin Tiffen, the MD signed on behalf of EACOP at a ceremony held at Makerere University on Tuesday 16 th July 2024.  The MoU details the two main areas of collaboration in capacity building including internships or graduate training and the trainer of trainers.

In his remarks, Prof. Nawangwe commended the initiative which he said will benefit several students from the College of Engineering, Design, Art and Technology (CEDAT) and the College of Natural Sciences (CoNAS) where programs related to the oil and gas industry are offered. He noted that oil and gas was still a young industry in Uganda and therefore the collaboration was timely.

Prof. Moses Musinguzi, the Principal CEDAT said the college was ready to collaborate with EACOP based on the fact that it is home to several programs in addition to the traditional engineering courses offered. He said all professionals have something to input into the oil pipeline and therefore the college was ready to offer the necessary support in ensuring that the MoU is actualized.

Dr. Peter Olupot, the Head of the Mechanical Engineering Department who spoke on behalf of the Dean School of Engineering said the school offers a range of programs relevant to the oil and gas industry in addition to the petroleum and geoscience subjects offered in the College of Natural Sciences. He said the School of Engineering was moving towards problem-based learning and competence-based assessment and therefore values the industry-academia relationships which will further the ongoing efforts towards producing graduates relevant to the industry.

The East African Crude Oil Pipeline (EACOP) Ltd. is a project company set up to develop, build, and operate a pipeline system that will transport crude oil from the inlet flange at Kabaale in Uganda to the port of Tanga in Tanzania.

A team of staff of Northeastern University paid a courtesy call on the Principal of the College of Engineering, Design, Art and Technology (CEDAT)

A team of staff of  Northeastern University  comprised of J.J. Kappa, Khalid I. Koddi, and Swaby Meisha paid a courtesy call on the Principal of the College of Engineering, Design, Art and Technology (CEDAT) while on a mission to lay strategies for the forthcoming study abroad program.

Over twenty students from  Northeastern University  will next summer come to the Margret Trowel School of Industrial and Fine Art for a period of three weeks. While here, students will take on two courses identified by the faculty, engage with the local community to get the cultural experience and visit the cultural sites such as the museum and Nagenda International Academy of Art and Design (NIAD) among other areas.

While receiving the team, the Principal, Prof. Moses Musinguzi gave a brief background to the College of Engineering, Design, Art and Technology (CEDAT) as one of the ten Colleges making up  Makerere University , as well as MTSIFA as one of the Schools making up the College.

Click here for details

Admission Lists -Successful Appeals and Re-advertised programmes 2024/25

MU-JHU Employment Opportunity: Five (5) Positions

Admission Lists with Subject Combinations 2024/25

Assoc. Prof. Umar Kakumba Hands Over DVCAA Mantle to Prof. Buyinza

Freshers’ Joining Instructions 2024/2025

Profile | Who is Rachael Gunn? Paris Olympics’ Australian breakdancer who became internet meme

• In videos of her performances shared online, B-Girl Raygun was seen hopping around like a kangaroo and touching her toes while lying down

Among the various breakers competing in the Paris Olympics, one in particular has taken the internet by storm: Australia’s Rachael Gunn.

In videos of her performances shared online, B-Girl Raygun was seen hopping around like a kangaroo, touching her toes while lying down and seemingly squirming around on the dance floor.

Netizens were quick to pick up on Gunn’s unusual moves and catapulted her to internet fame with thousands memes.

But who is she? Let’s take a look.

Early years

Born in Hornsby in New South Wales, Gunn was a former jazz and ballroom dancer. She was introduced to breaking by the man she later married, who had been practising for 10 years.

Although Gunn grew up dancing, she did not start competing in breaking competitions until her mid-twenties.

“I wasn’t a sporty kid, I was more of a dance kid,” Gunn had said. “I never thought the Olympics would be on the cards for me. It’s such a privilege and it’s hugely exciting.”

Breakdancing career

Gunn graduated university with her PHD thesis focusing on ‘the intersection of gender and Sydney’s breaking culture’ in 2017.

By 2020, Gunn worked her way up to become the Australian Breaking Association’s top ranked B-Girl.

She took part at the World Breaking Championships in Paris in 2021 and in Seoul 12 months later, and qualified for the Paris Games via the Oceania Championships in October 2023.

“I think a lot of people had doubted my ability to do it and maybe thought I was getting too old to be able to stay on top,” she said. “But I just kept pushing hard, I want to get better, and I want the scene to grow and get better.

Gunn’s experience had also influenced her beyond the dance floor as well.

She is a lecturer at the Department of Media, Communications, Creative Arts, Language and Literature at Macquarie University, where her biography states that she is an interdisciplinary and practice-based researcher interested in the cultural politics of breaking.

Internet fame

Despite Gunn’s experience in the discipline, her unique performance at the Paris Olympics quickly went viral on social media.

She finished the group phase with no points, which led many to question how she earned qualification.

Despite the jokes, Gunn defended her performance.

“I was never going to beat these girls on what they do best, the dynamic and the power moves, so I wanted to move differently, be artistic and creative because how many chances do you get in a lifetime to do that on an international stage?,” she said.

“I was always the underdog and wanted to make my mark in a different way.”

The memes drew an impassioned defence from Australia’s chef de mission Anna Meares as she hit out at “trolls and keyboard warriors”.

“If you don’t know Rachael’s story, in 2008, she was locked in a room crying, being involved in a male dominated sport as the only woman and it took great courage for her to continue on and fight for her opportunity to participate in a sport that she loved,” she said.

Meares noted that Gunn was the best female breakdancer the country had and was an “absolutely loved member” of the Olympic team.