Thesis (M. Dev.) -- University of Limpopo, 2017 / The aim of the study was to examine the challenges of water supply management in Umdoni Local Municipality. Two methods were employed to collect data in the study. The first method involved one-on-one interviews with the participants. An interview guide was used to obtain data pertaining water supply services from a water services manager, a municipal manager and ten (10) ward councillors. The second method entailed analysis of documents within the municipality. In this study findings were based on issues such as prioritization of effective water supply for Umdoni Local Municipality, community consultation and participation, addressing capacity constrains in the Municipality such as human resources, water service infrastructure and skills development. The underlying causes of the water supply problems are based on the basic infrastructure, provision of water supply being very poor and dismal across the area. Water serves as a basic need to which everybody has the right to access, however, water supply is unfortunately disrupted by many factors. The findings in this study shows that poor water supply emanates from many factors such as management skills, technical challenges and illegal connections. This study recommends that Umdoni Local Municipality has additions of water plants, building of new reservoirs and upgrades of water pipes, especially in Amahlongwa area as it needs urgent attention.

This diploma thesis is aimed on problems of supply chain management with selected assortment. It is focused on particular ways of supply management with fresh meat, on the flow of goods from producer to final customer and analyze the impact on key performance indicators pursued by a company. In the first three parts of the thesis is described the logistics systém in Ahold Czech Republic. In the following part of the thesis, supply chain of selected assortment is analyzed in this particular company and also how it is defined in the logistics theory. It is followed by detailed analysis of the new logistic system which was proposed to launch, including the definition of critical points. Final part of this diploma thesis is devoted to summary of expected benefits and costs and to evaluation of this new logistics system according to actual results.

This project deals with a design of power and control circuits for a laboratory power supply source, consisting of a continuous conduction mode active rectifier and DC/DC converter. Detailed design of input rectifier with active power factor correction, DC/DC converter and control circuits with their implementation to digital signal processor are the project results.

MRDV / Institute for Rural Development

<p>Millions of households around the world rely on intermittent water supply systems (IWS), where piped water supply is limited to specific hours during the day or on specific days during the week. Households relying on IWS systems, as their primary water source, often adapt to supply intermittency by installing in-house water storage and/or supplying water from non-piped sources (for instance, in the form of water tanker trucks). The piped water distribution network (WDN) in IWS systems is subject to short-term disruptions that cause dynamic behavior and interactions of the system’s stakeholders, including households, vendors of non-piped water, and the water utility. During disruptions of the WDN, households make decisions about obtaining water from different non-piped sources at different prices and wait times. These decisions, made by a large number of households, have an impact on the dynamics (in particular, the prices and availability) of the non-piped water market, which may in turn affect each household decision. Prior studies on the literature of the analysis of IWS systems focused on analyzing each of the components (namely the WDN, households, vendors of non-pied water, and the water utility) of the IWS in isolation, assuming static behavior of the other components.</p><p>The overreaching objective of this dissertation is to bridge the gap in knowledge and practice in analyzing the short-term dynamics within each component of the IWS system (focusing on the WDN and the households) and the interactions among all components of the IWS system when responding to physical disruptions of the WDN. First, a new framework for quantifying and analyzing the resilience of intermittent WDNs is presented. The framework incorporates the aspects of intermittent supply (including household storage and supply scheduling) into a hydraulic model that examines the network’s hydraulic performance and its topology to assess three resilience capacities: absorptive, adaptive, and restorative, against various types of physical disruptive events. The evaluation of the model, using the IWS network of a case study city in the Middle East, shows that household storage capacities, timing and length of the disruption, supply inequity, and the supply scheduling are significant factors in determining the resilience of the WDN, and the interactions of these variables result in different combinations of direct and post effects on households. The framework was also used to evaluate the impact of temporary modifications of the supply schedule on the network’s resilience. The results show that this short-term utility adaptive measure can significantly improve the resilience of the network. The proposed framework can assist utilities in the operation of the intermittent WDN under normal conditions and in the evaluation of the impact of different short- and long-term resilience enhancement strategies.</p><p>Next, based on empirical data from a survey of households in a city in the Middle East, the households’ decision-making in response to disruptions of the WDN was evaluated using econometric methods. A set of Binary Probit models were developed to model the decision of households regarding their risk attitudes toward running out of water (represented by the timing of their response actions), their willingness to pay for faster delivery of non-piped water, and their willingness to wait in-line to obtain water from a non-piped source. The results show how variables related to household characteristics, wealth, age and occupation of the household’s manager, knowledge of household manager about their households’ water situation, and prior experience with disruptions affect the households’ decisions when the piped-network is disrupted. The outputs of the econometric models can assist the city’s water managers in understanding the behavior of households that affect the demand and prices of different non-piped water sources.</p><p>The final component in this research integrates the two previous components into an Agent-Based Model (ABM) to evaluate the dynamics of the stakeholders’ interactions in response to disruptions of the WDN and to evaluate the impact of these interactions on the resilience of the whole system. The ABM examines the interactions between households and vendors of water tankers under utility’s policies that regulate the water tanker market while integrating variables that describe the response of the WDN to the disruption. The demonstration of the model using a representative subset of the IWS system in the case study city shows dynamic behavior patterns in: (a) the dynamics of households, and (b) the performance of the non-piped water market under different deterministic and stochastic scenarios of disruptions of the WDN.</p><p>The results of this research address many IWS systems in the Middle East and around the world that are characterized by household storage, as well as households’ dependency on the piped network as the main water supply. The models developed in this dissertation are expandable to adopt various systems’ configurations in terms of types and capacities of household storage, types and attributes of non-piped water sources, and attributes and preferences of households. The results of this doctoral research can assist water managers in cities in understanding the behavior of their IWS system (including the WDN and the system’s stakeholders), evaluating long-term resilience enhancement policies, and planning for short-term response to disruptions of the WDN.</p>

During the last decade, research related to Supply Chain Management has got a great deal of attention. The focus has especially circulated around supply chain integration and centralisation due to the increasingly competitive global market. The aim of this thesis has been to investigate how the supply chain performance in international manufacturing companies could be improved. By having a qualitative approach, this thesis contributes to earlier conducted research by providing a holistic view on supply chain management. This is by the authors considered crucial to manage the complexity of supply chain management and supply chain change. The specific context examined in this thesis concerns the spare parts distribution of large international manufacturing companies. The methods used during the case study consisted of a thorough literature review, external interviews and workshops with experts within supply chain management and supply chain change, and several interviews with employees at different levels and functions at the focal company, Toyota Material Handling Europe. Two of the interviewed external experts were managers at the supply chain function at Volvo Construction Equipment and Ericsson. To answer the main research question, three sub-queries have been examined. The first one concerns what main areas of difficulty that can be identified in the current supply chain of the focal company and in international manufacturing companies in general. The second sub-query concerns which supply chain policies that could be used to solve identified areas of difficulty. Finally, the third sub-query concerns which prerequisites that could be identified to successfully manage change within supply chains. The results imply that Information and Inventory Management are the main supply chain related areas in need of improvements at the focal company, as well as in international manufacturing companies in general. Thereby supply chain performance could be improved if performance within these areas is enhanced. To solve these two identified areas of difficulty, four theoretical supply chain policies related to supply chain integration have been examined due to complexity, need of investments during an implementation, as well as each policy’s possibility to solve the identified areas of difficulty. The supply chain policy Vendor-Managed Inventory was considered the most appropriate policy for the focal company to implement. As a consequence, an evaluation of the focal company’s readiness to implement a Vendor-Managed Inventory policy was also conducted by using a supply chain readiness framework developed by Niranjan, Wagner and Nguyen (2012). Based on the literature review, including the theoretical evaluation of the appropriateness of implementing Vendor-Managed Inventory, together with the findings from the external expert interviews, the focal company is recommended to implement a Vendor-Managed Inventory strategy. However, the focal company is also recommended to see such an implementation as an opportunity to later investigate the possibility to also include large suppliers in the collaboration. This would increase the level of integration among supply chain members further and thereby secure the company has the possibility to receive the advantages associated with sharing information (including Points-of-Sales data) with all supply chain members.   From a theoretical perspective the conclusion is that Vendor-Managed Inventory, with its focus on supply chain integration through collaboration and information sharing among supply chain members, is considered appropriate to implement when companies want to improve performance in one or all of these areas. Furthermore, the usage of a consignment stock agreement might be an appropriate complement to Vendor-Managed Inventory due to the international context. However, the authors suggest that international manufacturing companies should strive towards including large suppliers in the supply chain collaboration to increase performance further. Thereby they should move towards capabilities promoted in the supply chain policy Collaborative Planning, Forecasting and Replenishment, which advocate a higher level of integration than Vendor-Managed Inventory. Another main finding pinpoints the importance of a well-formulated and communicated vision in the beginning of a transformation, to manage supply chain change successfully. As a consequence, the authors of this thesis expanded the supply chain framework developed by Chopra and Meindl (2010) to also include vision. In addition, legal has been added as an important supply chain driver since it affects supply chain possibilities and decisions. The added parts are considered critical for the framework to be applicable in an international and rapidly changing business environment. Furthermore, the authors suggest the extended framework should be used to support companies evaluate the current and a desired future supply chain in accordance with examined change management literature. / Supply Chain Management har under det senaste decenniet fått mycket uppmärksamhet. På grund av en ökande internationell handel har forskningen framförallt behandlat Integration och Centralisering inom distributionskedjor. Syftet med denna studie har varit att undersöka hur man kan förbättra prestandan av distributionskedjan hos internationella tillverkningsföretag. Genom ett kvalitativt angreppssätt bidrar denna studie med ett holistiskt synsätt av Supply Chain Management, vilket av författarna är ansett kritiskt för att kunna hantera komplexiteten relaterad till Supply Chain Management och förändringsarbete inom detta område. Studiens forskningsfråga har kunnat besvaras genom att undersöka tre delfrågor. Den första behandlar att identifiera huvudproblemområden i distributionskedjan hos fokusföretaget samt internationella tillverkningsföretag generellt. Den andra delfrågan behandlar vilka teoretiska supply chain policies som skulle kunna användas för att lösa de identifierade problemområdena, medan den tredje och sista delfrågan handlar om att identifiera förutsättningar för att kunna hantera förändringsarbete av, och inom, distributionskedjor på ett lyckat sätt. Samtliga delfrågor och huvudfrågan har kunnat besvaras genom genomförandet av en litteraturstudie, intervjuer och workshops med externa områdesexperter inom Supply Chain Management och Supply Chain Change, samt interna intervjuer med anställda på olika avdelningar och nivåer inom fokusföretaget, Toyota Material Handling Europe. Två av de intervjuade experterna utgjordes av chefer på logistikavdelningen på två stora internationella tillverkningsföretag. Företagen i fråga utgjordes av Volvo Construction Equipment respektive Ericsson. Resultaten visar att Informations- och Lagerhantering anses vara de huvudområden inom Supply Chain Management, vilka är i störst behov av förbättringar och förändringar på fokusföretaget samt i stora internationella tillverkningsföretag generellt. Därmed kan prestandan av distributionskedjan förbättras om företag fokuserar på dessa två områden. För att förbättra Informations- och Lagerhanteringen har fyra teoretiska supply chain policies utvärderats, vilka alla mer eller mindre fokuserar på att öka integrationen mellan medlemmar inom distributionskedjan. Genom att utvärdera dessa supply chain policies med avseende på komplexitet, implementationskostnader samt möjlighet att lösa de identifierade huvudproblemområdena, har författarna kunnat dra slutsatsen att policyn Vendor-Managed Inventory bör vara mest passande att implementera på fokusföretaget. I och med detta resultat utvärderades fokusföretagets lämplighet att implementera Vendor-Managed Inventory utifrån en teoretisk modell utvecklad av Niranjan, Wagner och Nguyen (2012). Resultatet av denna utvärdering stödde det tidigare antagandet att Vendor-Managed Inventory är lämpligt för fokusföretaget att implementera. Författarna rekommenderar dock att en VMI-implementation ska ses som ett första steg varefter förtaget även skall utvärdera möjligheten att inkludera sina större leverantörer och därmed öka integrationen av distributionskedjan ytterligare. Detta för att verkligen uppnå de fördelar informationsdelning kan medföra om information delas med samtliga medlemmar i kedjan. Författarna har med hjälp av dessa resultat kunnat dra den teoretiska och generella slutsatsen att Vendor-Managed Inventory, med dess fokus på att öka integrationen i distributionskedjan genom ökat samarbete och ökad informationsdelning mellan distributionskedjans medlemmar, anses lämplig att implementera då företag vill eller behöver förbättras inom dessa områden. Vidare kan avtalsmodellen Consignment Stock komplettera Vendor-Managed Inventory i en internationell kontext genom användandet av en legal ägare av lager, oavsett lagerposition. Författarna rekommenderar även att stora internationella tillverkningsföretag bör sträva mot att inkludera sina större leverantörer och därmed öka integrationen av, och samarbetet inom, distributionskedjan. Detta skulle medföra att prestandan av distributionskedjan förbättras ytterligare. Därmed bör de utvecklas mot supply chain policyn Collaborative Planning, Forecasting and Replenishment, vilken förespråkar en högre nivå av samarbete än Vendor-Managed Inventory. Vidare visar studien vikten av en välformulerad och kommunicerad Vision i början av större förändringsprojekt. Detta för att öka chanserna till lyckade och välmotiverade förändringar. I och med identifieringen av visionens vitala del i förändringsprojekt, vidareutvecklade författarna modellen; Supply Chain Decison-Making Framework, utvecklad av Chopra &amp; Meindl (2010), till att även inkludera Vision. Dessutom adderades Legala aspekter, då de påverkar både beslutsfattande och möjligheter inom en internationell kontext. Både Vision och Legala aspekter anses av författarna vara kritiska delar för att modellen skall vara applicerbar i en internationell och föränderlig miljö. I linje med forskning inom förändringshantering som identifierats i litteraturen, anses Chopra &amp; Meindl’s vidareutvecklade modell nu vara lämplig att användas som en hjälp för företag att utvärdera sin nuvarande och önskade framtida distributionsstruktur.

Purpose. Supply chain visibility is among the top concerns expressed by many supply chain leaders. While the traditional enablers of supply chain visibility are information sharing, IT implementation, and relationships between supply chain partners; the role of global supply chain standards as an integral part of each of these enablers is often underestimated. The purpose of this thesis is to investigate the adoption and applicability of global supply chain standards within the provisions of supply chain visibility among various supply chain designs. Methodology. With the aim of theoretical replication, three case studies within the retail industry were conducted. Axfood and IKEA cases were analyzed as examples of opposite types of supply chain design and as companies with different degrees of implementation regarding their global data identification standards. The Clas Ohlson case was analyzed to illustrate a company with open paths in regards to its adoption of future global supply chain standards. In-depth, semi-structured interviews were performed directly with company representatives as well as with GS1, which is one of the assignors of this project. Finally, an analytical model for the potential adoption of global standards was developed. Findings. The results of case analysis clearly illustrate that global data identification standards are one of the pillars of supply chain visibility. Different practices of global standard adoption in different supply chain designs are explained by a different need for supply chain visibility among various supply chains. Moreover, the higher the degree of adoption of global standards, the higher the possibility of gaining strategic benefits. Practical implication. The model developed in this research aims to help logistics and supply chain managers estimate the need for supply chain visibility within their supply chains, and to also assess the potential adoption of global data identification standards within their supply chain practices. Originality/value. This study contributes to theory in such areas of research as supply chain visibility, standardization in supply chain management, and supply chain design. The main contribution is made to the resource-based view (RBV) theory, which according to supply chain visibility can be seen as both a strategic resource and a tool for efficiency optimization. A new term in supply chain design which suggests many-to-many and exclusive supply chain classifications is proposed, as is a framework for assessing the need for supply chain visibility. An analytical model for the potential adoption of global standards is also developed. / Research project “The role of global standards for supply chain visibility” at the Industrial Engineering and Management department of KTH

Lean production and Lean philosophy have been developed, studied and implemented over the world since it was know from Toyota Production System. International manufacturers/OEMs have more or less developed their own Lean production systems. Over the years, arising challenges from new technology and internationalization have force the OEMs to understand and evaluate the design of supply chain to support their lean production system, and to manage the SC and compete as a whole against other supply chains. When apply Lean principles to the level of Supply Chain, coordination is an essential element to success. Today, researches have been done on joint efforts on decision making among supply chain actors, and applying Lean tools such as VSM on an extended level, namely a supply chain. Whereas the methods to improve SC coordination when implementing Lean through SC remain undeveloped. By interviewing Lean supply chain experts, experienced personnel in Supply Chain Management, and Lean experts from various organizations, a methodology to identify and visualize the improvement areas in supply chain coordination was designed. The methodology was then tested in a European OEM’s supply chain. Value Stream Mapping, as the base, was adapted to support identification and visualization of improvement areas in supply chain coordination. Several misalignments in the SC coordination were found in the current state, then visualized in current state map and approved by various SC actors. The methodology was then improved according to the process of testing. The purpose of this thesis is to develop a methodology to identify and visualize the improvement areas in (manufacturing) supply chain coordination within a Lean perspective.

DeLaval distribuerar fullständiga mjölkningssystem vilka säljs på drygt 100 olika marknader över hela världen. Det finns alltid en strävan efter att leverera beställningar till kund i tid. Direktören för Inköp och Logistik Asien på DeLaval i Shanghai har uttryckt ett behov av att undersöka hur informationen bör anpassas så att ett stöd för supply chain uppstår med syftet att förbättra tiden för leverans till kund. Detta resulterade i en utredning att kartlägga behoven i informationsflödet och vilka system som behöver stöd för att möjliggöra leverans i tid till kund. Det finns ett mått vilket kallas on time in full (OTIF) som används av DeLaval för att mäta leveransprecision för slutkund. Detta var grunden för att följande frågeställning kunde formulerades: Hur kan informationsflödet inom supply chain anpassas för att förbättra OTIF? För att kunna svara på denna fråga kom författarna fram till att en fallstudie var den mest lämpade metoden att gå tillväga. Både primär och sekundär data samlades in. De primära data kom främst från intervjuer, men även från seminarier och evenemang. De sekundära data bestod av interna dokument, akademiska artiklar, böcker och andra former av information som uppkommit i andra sammanhang. Analysen belyser viktiga aspekter i informationsflödet. Till exempel: befintliga problem i de system som används för att hantera information och ritningar, svagheter i det interna samarbetet och kommunikationen, vikten av internt och externt informationsutbyte. Konkreta förslag på hur belysta aspekter ovan kan lösas är till exempel att börja tillämpa RFID. En supply chain är, likt bilden på framsidan av denna uppsats, en icke linjär process. / DeLaval distributes complete milking systems. They conducts their business in more than 100 markets all over the world. There is always a desire to deliver orders to customers on time. The Director of Purchasing and Logistics Asia at DeLaval in Shanghai has expressed a need to investigate how to adjust the information support for supply chain in order to improve the time for delivery to the customer. This resulted in a commission to clarify the needs regarding the information flow and to identify what system support is needed to enable delivery on time in full to the end‐ customer. There is a measurement called on time in full (OTIF) which is used by DeLaval to measure the performance of delivery of their supply chain at the interface to customer. This was the basis for the following issue was formulated: How can information flows within the supply chain be adapted to improve OTIF? To be able to respond to this question a case study had to be carried out. Both primary and secondary data was collected. The primary data came primarily from interviews, but also from seminars and events. The secondary data consisted of internal documents, academic articles, books and other forms of information available to read. The analysis was able to enlighten important issues in the information flow. For example: existing problems in the systems used to manage information and drawings, weaknesses in the internal collaboration and communication, the importance of internal and external information sharing. Concrete suggestions on how the enlighten issues above can be solved is for example to implement RFID. A supply chain is as in the front picture of this thesis; never completely straight.

Background: COVID-19 has brought so many changes in the business environment and in the ways of doing business. Food retail companies in Sweden have been trying to cope with the changes and challenges and have made necessary decisions to become resilient. It is in their urge to become resilient; however, the implementation is arduous at times. Purpose: The purpose of the thesis is two-folded. One is to know the supply chain inefficiencies, and the other is to understand how the inefficiencies can be mitigated through the actions of the supply chain professionals. Method: Semi-structured questions have been asked in the interviews to gather in-depth insights from the industry expert. The interviews were taken from the branch managers of food retail stores in Sweden. The analysis has been done based on the content analysis. Findings: Content analysis assisted the emergence of the factors. It was done by analyzing the quotes from the branch managers. Therefore, the relationship between the characteristics and the RBV theory has been scrutinized. Conclusion: The purpose of the thesis was to find the inefficiencies of the food retail supply chain in pandemic times. Also, it was to find the solution about how the supply chain inefficiencies can be tackled to ensure supply chain resilience in the food retail stores in Sweden. For that purpose, data have been collected right from the field where the action takes place, and therefore, the data have been analyzed. Hence, the problems have been found, and the solutions have been recommended.