Logisztikai folyamatok informatikai támogatottsága Magyarországon – fókuszban a disztribúciós logisztika = Backing logistics processes with information technology – current practice and improvement possibilities at Hungarian companies

Az elemzés egy, a Budapesti Corvinus Egyetem (BCE) Logisztika és Ellátási Lánc Menedzsment Tanszéke által végzett kérdőíves felmérés eredményeit foglalja össze. A kutatás alapvető célja, hogy felmérje és bemutassa a hazai vállalatok logisztikai, ezen belül is elsősorban disztribúciós logisztikai folyamatainak informatikai oldalról történő jelenlegi támogatottsági szintjét és a következő két-három év e téren várható fejlesztési irányait. A kutatás szisztematikusan kitért a logisztikai információs rendszer valamennyi alrendszerére, vizsgálta a különböző azonosítási megoldások elterjedtségét, a vállalatirányítási rendszer, illetve egyes moduljainak használatával kapcsolatban kialakult gyakorlatot, de a logisztika stratégiai döntéseinek informatikai támogatottságát és a használt kommunikációs technikákat is. Összességében megállapíthatjuk, hogy a logisztikai információs rendszerek fejlettségi szintje ma Magyarországon közepesnek mondható, fontos megjegyezni azonban, hogy a KKV szektor e téren is jelentős lemaradással rendelkezik. Ez természetesen azt is jelent, hogy az informatikai eszközök alkalmazásának kiterjesztésével még jelentős teljesítményjavulás érhető el. = The essay summarizes the results of a survey carried out by Corvinus University of Budapest, Department of Logistics and Supply Chain Management. Aim of the survey was to analyze and describe the actual Hungarian company practice regarding the IT support of logistics – and particularly distribution – processes, and the plans of developing it within the next 2-3 years. Survey has systematically covered all fields of logistics information system, analyzed the prevalence of different identification techniques and systems. On the whole we appoint that logistics information systems applied by Hungarian companies are on satisfactory level; however it is important to tell that SME companies are in huge lag. This means that improving logistics information system hides the possibility of considerable performance development.

Emberi erőforrás menedzsment és gyakorlatai a lean termelésben – a tevékenységmenedzsment irodalmának tükrében = Human resource management and practices in lean manufacturing – review of Operations Management’s literature

A lean bevezetése nem korlátozódik a termelés újraértelmezésére, hanem jellemzően a vállalati belső működés (számvitel, emberi erőforrás, beszerzés) és külső kapcsolatok (beszállítók, ellátási lánc) újszervezését is megköveteli. Ezek a kapcsolódási pontok számos, tudományterületek határán fekvő kutatási irányt nyitnak meg. Ebben a tanulmányban a lean termelés és a belső működéshez sorolt emberi erőforrás menedzsment kapcsolatára fókuszálok. Célom, hogy a tevékenységmenedzsment vonatkozó irodalmának áttekintésével bemutassam a lean termelés logikájához illeszkedő emberi erőforrás menedzsmentet, annak jellemző gyakorlatait. = Lean goes beyond manufacturing, implementing its principles usually requires companies to reorganize their companywide internal operations (accounting, human resource, purchasing) and also external relations (supplier, supply chain). This linkages offer several multidisciplinary research directions, this study focuses on the relationship between human resource management and lean production. The main aim of this working paper is to review Operations Management’s literatures on this issue and present the human resource policy and its practices that fit and support lean production.

The analysis of bullwhip effect in a HMMS-type supply chain

The aim of the paper is to investigate the well-known bullwhip effect of supply chains. Control theoretic analysis of bullwhip effect is extensively analyzed in the literature with the Laplace transform. This paper tries to examine the effect for an extended Holt–Modigliani–Muth–Simon model. A two-stage supply chain (supplier–manufacturer) is studied with quadratic costs functional. It is assumed that both firms minimize the relevant costs. The order of the manufacturer is delayed with a known constant. Two cases are examined: supplier and manufacturer minimize the relevant costs decentralized, and a centralized decision rule. The question is answered, how to decrease the bullwhip effect.

The analysis of bullwhip effect in a HMMS-type supply chain

The aim of the paper is to investigate the well-known bullwhip effect of supply chains. Control theoretic analysis of bullwhip effect is extensively analyzed in the literature with Laplace transform. This paper tries to examine the effect for an extended Holt-Modigliani-Muth-Simon model. A two-stage supply chain (supplier-manufacturer) is studied with quadratic costs functional. It is assumed that both firms minimize the relevant costs. The order of the manufacturer is delayed with a known constant. Two cases are examined: supplier and manufacturer minimize the relevant costs decentralized, and a centralized decision rule. The question is answered, how to decrease the bullwhip effect.

Logisztikai folyamatok informatikai támogatottsága Magyarországon – Fókuszban a disztribúciós logisztika (Supporting logistics processes by information technology – current practice and improvement possibilities at Hungarian companies)

Az elemzés egy a Budapesti Corvinus Egyetem (BCE) Logisztika és Ellátási Lánc Menedzsment Tanszéke által végzett kérdőíves felmérés eredményeit foglalja össze. A kutatás alapvető célja, hogy felmérje és bemutassa a hazai vállalatok logisztikai, ezen belül is elsősorban disztribúciós logisztikai folyamatainak informatikai oldalról történő jelenlegi támogatottsági szintjét és a következő két-három év e téren várható fejlesztési irányait. A kutatás szisztematikusan kitért a logisztikai információs rendszer valamennyi alrendszerére, vizsgálta a különböző azonosítási megoldások elterjedtségét, a vállalatirányítási rendszer, illetve egyes moduljainak használatával kapcsolatban kialakult gyakorlatot, de a logisztika stratégiai döntéseinek informatikai támogatottságát és a használt kommunikációs technikákat is. Összességében megállapítható, hogy a logisztikai információs rendszerek fejlettségi szintje ma Magyarországon közepes, fontos megjegyezni azonban, hogy a kkv-szektor e téren is jelentősen lemaradt. Ez természetesen azt is jelenti, hogy az informatikai eszközök alkalmazásának kiterjesztésével még komoly teljesítményjavulás érhető el. ________ The essay summarizes the results of a survey carried out by Corvinus University of Budapest, Department of Logistics and Supply Chain Management. Aim of the survey was to analyze and describe the actual Hungarian company practice regarding the IT support of logistics – and particularly distribution – processes, and the plans to develop it within the next 2-3 years. Survey has systematically overviewed all fields of logistics information system, analyzed the prevalence of different identification techniques and systems. Generally the authors appoint that logistics information systems applied by Hungarian companies are on satisfactory level; however it is important to tell that SME companies are in huge lag. This means that improving logistics information system hides the possibility of considerable performance development.

A beszerzés helye és szerepe a Magyarországi kis- és középvállalatoknál (The Role of Purchasing in the Hungarian Small and Medium Enterprises)

A kis- és középvállalkozások (kkv-k) a legtöbb országban, így Magyarországon is kiemelt szerepet töltenek be a gazdaság életében. A velük kapcsolatos kutatások elérkeztek abba a fázisba, amikor például a kisvállalkozás- fejlesztés és az ellátásilánc-menedzsment összekapcsolásával megismerhetjük egy adott vállalati funkció szerepét és helyét a célcsoportban. A szerzők tanulmányukban egy kutatás eredményeit mutatják be, mely egyenrangú módon fókuszál a beszerzési tevékenység és a kkv-k sajátosságaira. A beszerzési aspektusok kiemelésével lehetőség van mélyebben megismerni a kkv-k bizonytalanságának forrásait, a beszállítókkal kapcsolatos igényeik megfogalmazását, a vevők preferenciáit, melyen keresztül általános kép kapható a szállítófejlesztés lehetőségeiről, kifejezetten a beszerzési tevékenység informatikai támogatásáról, továbbá véleményükről a beszerzés mint szolgáltatás kiszervezésével kapcsolatban. A kutatást megalapozó kérdőíves felmérés nemzeti összehasonlításra is lehetőséget ad, valamint segíti egy adott tevékenységre fókuszálva a hazai kis- és középvállalkozások helyzetének bemutatását. ______ Small and medium enterprises (SME) play an important role in the economy of Hungary, just like in most other countries. Studies on SMEs recently have focused on the role of a particular company function in the target group by linking the development of SMEs to new advanced options, such as supply chain management. This paper provides an overview of authors’ ques a questionnaire research focusing on the specific characteristics of both purchasing and SMEs. Focusing on the purchasing aspects enables us to gain a deeper knowledge on the main causes of the instability of SMEs as well as on their expectations regarding suppliers and a better understanding on the preferences of the clients. As a result authors can highlight the main options of developing the supply chain as well as the IT support of purchasing and they can state their opinion on the outsourcing of the purchasing as a service. The questionnaire survey providing the basis for the study enables authors to make international comparisons as well as to present the current state of the Hungarian SMEs focusing on a particular business activity.

Szolgáltatásmenedzsment Magyarországon a termelő- és a szolgáltatóvállalatoknál (Service management at the manufacturing and service companies in Hungary)

A szolgáltatási tevékenységek ma már döntő szerepet játszanak a gazdaságok működésében, nemcsak az egyre nagyobb arányt képviselő szolgáltatószektorban, hanem a termelővállalatoknál is. Ez a tanulmány – a szolgáltatásmenedzsment néhány elfogadott tételének felhasználásával – azt vizsgálja, hogy a Budapesti Corvinus Egyetem Versenyképesség Kutató Központja által szervezett versenyképesség-kutatás 3. fordulójának adatai alapján mit tudunk mondani ma Magyarországon a szolgáltatásokról. Fő megállapításai szerint hazánkban a termelővállalatok ma felkészültebbek a szolgáltatások nyújtása terén, mint maguk a szolgáltatók. Erőfeszítéseiket nemcsak a szolgáltatásminőség javítására, hanem a szolgáltatásnyújtási folyamat fejlesztésére is fordítják. A nagyobb erőfeszítés pedig erőteljesebb hatást gyakorol a vállalatok jövedelmezőségére és a vevői érték növekedésére egyaránt. ______ Service activities nowadays play a crucial role in developed economies. This statement is true not only in the ever increasing service sector, but also at manufacturing companies. This study gives a picture about services in the Hungarian economy on the basis of the 3rd round competitiveness survey organized by the Competitiveness Research Centre of Corvinus University of Budapest. Some hypotheses based on classical service management issues are tested. According to the most important conclusions, manufacturing companies in Hungary are more prepared today to provide services than the service sector itself. Manufacturing companies put efforts both into improving service quality and processes. And these efforts appear in increasing profitability and customer value.

Hotel and Restaurant Entry-Level Job Competencies: Comparisons of Management and Worker Perceptions

This article presents the findings of a central Florida study of lodging and restaurant managers as well as entry-level workers who were graduates of hospitality management programs. It provides a theoretical construct as a basis of the methodology employed. The article then reports the findings of perceptions of desired knowledge, skills and abilities, and attitudes associated with entry-level employees. It further compares desired levels of preparation for entry-level positions in the industry as reported by respondents of both groups. Finally, the authors present conclusions and implications for central Florida practitioners and educators.

Event mining for system and service management

Modern IT infrastructures are constructed by large scale computing systems and administered by IT service providers. Manually maintaining such large computing systems is costly and inefficient. Service providers often seek automatic or semi-automatic methodologies of detecting and resolving system issues to improve their service quality and efficiency. This dissertation investigates several data-driven approaches for assisting service providers in achieving this goal. The detailed problems studied by these approaches can be categorized into the three aspects in the service workflow: 1) preprocessing raw textual system logs to structural events; 2) refining monitoring configurations for eliminating false positives and false negatives; 3) improving the efficiency of system diagnosis on detected alerts. Solving these problems usually requires a huge amount of domain knowledge about the particular computing systems. The approaches investigated by this dissertation are developed based on event mining algorithms, which are able to automatically derive part of that knowledge from the historical system logs, events and tickets. ^ In particular, two textual clustering algorithms are developed for converting raw textual logs into system events. For refining the monitoring configuration, a rule based alert prediction algorithm is proposed for eliminating false alerts (false positives) without losing any real alert and a textual classification method is applied to identify the missing alerts (false negatives) from manual incident tickets. For system diagnosis, this dissertation presents an efficient algorithm for discovering the temporal dependencies between system events with corresponding time lags, which can help the administrators to determine the redundancies of deployed monitoring situations and dependencies of system components. To improve the efficiency of incident ticket resolving, several KNN-based algorithms that recommend relevant historical tickets with resolutions for incoming tickets are investigated. Finally, this dissertation offers a novel algorithm for searching similar textual event segments over large system logs that assists administrators to locate similar system behaviors in the logs. Extensive empirical evaluation on system logs, events and tickets from real IT infrastructures demonstrates the effectiveness and efficiency of the proposed approaches.^

Enhancing Cloud Security and Privacy: Broadening the Service Level Agreement

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Managing supply chain knowledge-based linkages for improving operational performance

Purpose: This paper aims to explore the role of internal and external knowledgebased linkages across the supply chain in achieving better operational performance. It investigates how knowledge is accumulated, shared, and applied to create organization-specific knowledge resources that increase and sustain the organization's competitive advantage. Design/methodology/approach: This paper uses a single case study with multiple, embedded units of analysis, and the social network analysis (SNA) to demonstrate the impact of internal and external knowledge-based linkages across multiple tiers in the supply chain on the organizational operational performance. The focal company of the case study is an Italian manufacturer supplying rubber components to European automotive enterprises. Findings: With the aid of the SNA, the internal knowledge-based linkages can be mapped and visualized. We found that the most central nodes having the most connections with other nodes in the linkages are the most crucial members in terms of knowledge exploration and exploitation within the organization. We also revealed that the effective management of external knowledge-based linkages, such as buyer company, competitors, university, suppliers, and subcontractors, can help improve the operational performance. Research limitations/implications: First, our hypothesis was tested on a single case. The analysis of multiple case studies using SNA would provide a deeper understanding of the relationship between the knowledge-based linkages at all levels of the supply chain and the integration of knowledge. Second, the static nature of knowledge flows was studied in this research. Future research could also consider ongoing monitoring of dynamic linkages and the dynamic characteristic of knowledge flows. Originality/value: To the best of our knowledge, the phrase 'knowledge-based linkages' has not been used in the literature and there is lack of investigation on the relationship between the management of internal and external knowledge-based linkages and the operational performance. To bridge the knowledge gap, this paper will show the importance of understanding the composition and characteristics of knowledge-based linkages and their knowledge nodes. In addition, this paper will show that effective management of knowledge-based linkages leads to the creation of new knowledge and improves organizations' operational performance.

Supply Chain Resilience? Definition of concept and its formative elements.

The objective of this paper is to conceptualize Supply Chain Resilience (SCRes) and identify which supply chain capabilities can support the containment of disruptions and how these capabilities affect SCRes. Through a systematic and structured review of literature, this paper provides insights into the conceptualization and research methodological background of the SCM field. A total of one hundred and thirty four carefully selected refereed journal articles were systematically analyzed leading to the introduction of a novel definition for SCRes, which the authors view as the as “the ability to proactively plan and design the Supply Chain network for anticipating unexpected disruptive (negative) events, respond adaptively to disruptions while maintaining control over structure and function and transcending to a post-event robust state of operations, if possible, more favorable than the one prior to the event, thus gaining competitive advantage”. Finally, a critical examination of existing conceptual frameworks for understanding the relationships between the SCRes concept and its identified formative elements, is taking place.

Waste Not, Want Not: Managing Perishables in Small and Medium Retail Enterprises

Purpose of this paper:
Recent literature indicates that around one third of perishable products finish as waste (Mena et al., 2014): 60% of this waste can be classified as avoidable (EC, 2010) suggesting logistics and operational inefficiencies along the supply chain. In developed countries perishable products are predominantly wasted in wholesale and retail (Gustavsson et al., 2011) due to customer demand uncertainty the errors and delays in the supply chain (Fernie and Sparks, 2014). While research on logistics of large retail supply chains is well documented, research on retail small and medium enterprises’ (SMEs) capabilities to prevent and manage waste of perishable products is in its infancy (c.f. Ellegaard, 2008) and needs further exploration. In our study, we investigate the retail logistics practice of small food retailers, the factors that contribute to perishable products waste and the barriers and opportunities of SMEs in retail logistics to preserve product quality and participate in reverse logistics flows.

Design/methodology/approach:
As research on waste of perishable products for SMEs is scattered, we focus on identifying key variables that contribute to the creation of avoidable waste. Secondly we identify patterns of waste creation at the retail level and its possibilities for value added recovery. We use explorative case studies (Eisenhardt, 1989) and compare four SMEs and one large retailer that operate in a developed market. To get insights into specificities of SMEs that affect retail logistics practice, we select two types of food retailers: specialised (e.g. greengrocers and bakers) and general (e.g. convenience store that sells perishable products as a part of the assortment)

Findings:
Our preliminary findings indicate that there is a difference between large retailers and SME retailers in factors that contribute to the waste creation, as well as opportunities for value added recovery of products. While more factors appear to affect waste creation and management at large retailers, a small number of specific factors appears to affect SMEs. Similarly, large retailers utilise a range of practices to reduce risks of product perishability and short shelf life, manage demand, and manage reverse logistics practices. Retail SMEs on the other hand have limited options to address waste creation and value added recovery. However, our findings show that specialist SMEs could successfully minimize waste and even create possibilities for value added recovery of perishable products. Data indicates that business orientation of the SME, the buyersupplier relationship, and an extent of adoption of lean principles in retail coupled with SME resources, product specific regulations and support from local authorities for waste management or partnerships with other organizations determine extent of successful preservation of a product quality and value added recovery.

Value:
Our contribution to the SCM academic literature is threefold: first, we identify major factors that contribute to the generation waste of perishable products in retail environment; second, we identify possibilities for value added recovery for perishable products and third, we present opportunities and challenges for SME retailers to manage or participate in activities of value added recovery. Our findings contribute to theory by filling a gap in the literature that considers product quality preservation and value added recovery in the context of retail logistics and SMEs.

Research limitations/implications:
Our findings are limited to insights from five case studies of retail companies that operate within a developed market. To improve on generalisability, we intend to increase the number of cases and include data obtained from the suppliers and organizations involved in reverse logistics flows (e.g. local authorities, charities, etc.).

Practical implications:
With this paper, we contribute to the improvement of retail logistics and operations in SMEs which constitute over 99% of business activities in UK (Rhodes, 2015). Our findings will help retail managers and owners to better understand the possibilities for value added recovery, investigate a range of logistics and retail strategies suitable for the specificities of SME environment and, ultimately, improve their profitability and sustainability.

Managing Rentals with Usage-Based Loss

Motivated by new and innovative rental business models, this paper develops a novel discrete-time model of a rental operation with random loss of inventory due to customer use. The inventory level is chosen before the start of a finite rental season, and customers not immediately served are lost. Our analysis framework uses stochastic comparisons of sample paths to derive structural results that hold under good generality for demands, rental durations, and rental unit lifetimes. Considering different \recirculation" rules | i.e., which rental unit to choose to meet each demand | we prove the concavity of the expected profit function and identify the optimal recirculation rule. A numerical study clarifies when considering rental unit loss and recirculation rules matters most for the inventory decision: Accounting for rental unit loss can increase the expected profit by 7% for a single season and becomes even more important as the time horizon lengthens. We also observe that the optimal inventory level in response to increasing loss probability is non-monotonic. Finally, we show that choosing the optimal recirculation rule over another simple policy allows more rental units to be profitably added, and the profit-maximizing service level increases by up to 6 percentage points.