Richard Pibernik

• University of Wuerzburg

To maximize profits, given limited resources, companies commonly divide their overall customer base into different segments and use allocation policies to prioritize the most important segments. Determining the optimal allocations is challenging due to supply lead times and uncertain demand. Another challenge is the multilevel hierarchical structur...

Motivated by the practical limitations of current demand fulfillment systems, this paper addresses the problem of allocation planning under service-level contracts in a multi-period setting. We provide a formal definition of the allocation planning problem under a type of service-level contract that is particularly relevant to manufacturing industr...

Matching supply with demand remains a challenging task for many companies, especially when purchasing and production must be planned with sufficient lead time, demand is uncertain, overall supply may not suffice to fulfill all of the projected demands, and customers differ in their level of importance. The particular structure of sales organization...

Considering the increasing international division of labor, as well as stakeholders' growing awareness of sustainability, assuring that business practices are sustainable is a major challenge. Companies have to account for the fact that any misconduct at a supplier's premises may have spillover effects that reach the manufacturer or retailer. There...

Global-health purchasing organizations (POs) want to increase access to essential medicines in low-income countries. One way to purchase more medicines with limited funds is to contract with generics manufacturers, thereby increasing competition and lowering prices. However, many POs fear that these entrants are less reliable than others and increa...

As machines get smarter, massive amounts of condition-based data from distributed sources become available. This data can be used to enhance maintenance management in several ways, such as by improving maintenance demand forecasting and spare parts and capacity planning. Regarding the former, machine learning techniques promise substantial benefits...

In this paper we study the profitability of service-level-based price differentiation (SLBPD) in an inventory-rationing context. SLBPD implies that a company offers several combinations of prices and guaranteed service levels, from which customers self-select; different customers choose different offerings because they incur different shortage cost...

Companies have consolidated purchasing volumes that were scattered across organizational units to lower purchasing prices. To realize these benefits companies frequently opt for a hybrid organizational structure that is conducive to a specific form of non-compliant behavior, referred to as maverick buying: local business units bypass official proce...

We study critical-level inventory-management policies as means to provide differentiated (\(\alpha \) and \(\beta \)) service levels to more than two classes of customers. First, we derive closed-form expressions for the service levels of a single-period critical-level policy with an arbitrary number of customer classes (with Poisson demand). Based...

Managers and policy makers frequently face crucial strategic decisions that inevitably rely on judgments about relevant future events. These judgments are often characterized by very high uncertainty and the absence of experience from previous good or bad judgments. Judgments of other experts are oftentimes an important—sometimes the only—source of...

We investigate a setting where a purchasing manager (PM) decides whether to single or to dual sourcing and how to allocate volume in case of dual sourcing. Single sourcing is attractive to the PM because suppliers offer volume discounts for increasing volume allocations. The PM considers dual sourcing to safeguard against a potential default of sup...

Abstract: Driven by the upsurge in global (out-)sourcing and the changing expectations of organizations'' stakeholders, companies are increasingly being held responsible for the actions of their suppliers. Subsequently, Purchasing and Supply Management (PSM) has emerged as an important factor in safeguarding organizations from being accused of irre...

This research investigates the impact of alternative allocation mechanisms that can be employed in the context of vaccine inventory rationing. Available vaccine inventory can be allocated to arrivals from high priority (target groups such as healthcare professionals) and low priority (non-target groups) demand classes using Partitioned Allocation (...

When decision makers face crucial strategic decisions they frequently have to rely on judgments about events in the far future. These judgments are typically characterized by very high uncertainty and the absence of experience from previous good or bad judgments. Judgments of other experts are oftentimes an important - sometimes the only - source o...

Purpose The purpose of this paper is to investigate the potential of a new convenience‐enhancing service at the interface between retailers and consumers: time‐based delivery of parcels. The service allows consumers to choose a preferred time slot for a parcel to be delivered. This convenience‐enhancing logistics service may be attractive for consu...

Traditionally, distribution has been viewed as the key (physical) link between a company's internal supply chain activities and its customers. More recently, demand management has emerged as a new dimension at the customer interface. Although it has become increasing popular in industry, it has not yet been analyzed in depth with respect to its imp...

The SecureSCM project demonstrates the practical applicability of secure multiparty computation to online business collaboration. A prototype supply-chain management system protects the confidentiality of private data while rapidly adapting to changing business needs.

In many inventory settings companies wish to provide customer-differentiated service levels. These may, for example, be motivated by differences in the perceived customer lifetime value or by specific contractual agreements. One approach to provide differentiated service levels is to reserve some portion of the available inventory exclusively for s...

Although, ceteris paribus, reducing lead times may be desirable from an overall system perspective, an upstream party (e.g., a manufacturer) may have strong disincentives to offer shorter lead times, even if this came at no cost. We consider a setting in which the downstream party has the ability to exert a costly effort to increase demand (e.g., t...

It is a well-acknowledged fact that collaboration between different members of a supply chain yields a significant potential to increase overall supply chain performance. Sharing private information has been identified as prerequisite for collaboration and, at the same time, as one of its major obstacles. One potential avenue for overcoming this ob...

We study the risk attitudes of an important segment of the economy: managers. We conduct artefactual field experiments with 130 managers from 12 industrial companies. Our analysis is particularly careful to evaluate alternative models of decision-making under risk. In general, we find that the managers in our sample are moderately risk averse. Assu...

Recently researchers have integrated aspects of supply risk management into decision models for determining the optimal design of supply networks. A purchasing manager faces a fundamental trade-off when designing the supply network and deciding upon the allocation of purchasing volumes across a set of selected suppliers: additional suppliers may ac...

Supply chain master planning strives for optimally aligned production, warehousing and transportation decisions across a multiple number of partners. Its execution in practice is limited by business partners' reluctance to share their vital business data. Secure Multi-Party Computation (SMC) can be used to make such collaborative computations priva...

Supply chain master planning strives for optimally aligned produc- tion, warehousing and transportation decisions across a multiple number of part- ners. Its execution in practice is limited by business partners' reluctance to share their vital business data. Secure Multi-Party Computation can be used to make such collaborative computations privacy...

In this paper we consider a Make-to-Stock order fulfillment system facing random demand with random due date preferences from two classes of customers. We develop an integrated approach for reserving inventory in anticipation of future order arrivals from high priority customers and for order promising in real-time. Our research exhibits three dist...

Supplier selection is becoming more and more critical for purchasing managers. The ongoing integration of supply chains increases dependencies within the supply chain and therefore requires a thorough decision on the right number and set of suppliers. In choosing the optimal number of suppliers and allocating purchasing volumes, companies face a fu...

We consider a make-to-order manufacturer facing random demand from two classes of customers. We develop an integrated model for reserving capacity in anticipation of future order arrivals from high priority customers and setting due dates for incoming orders. Our research exhibits two distinct features: (1) we explicitly model the manufacturer's un...

We show that in supply chains where retailer effort can substantially affect sales, longer leadtimes can result in higher sales for the manufacturer. Hence, under such conditions, manufacturers might not want to reduce lead times even if it was free to do so. Using a one- period model where retailer effort affects sales and is exerted after stockin...

The major task of supply chain master planning (SCMP) is the determination of production and inventory quantities for the whole supply chain on a medium term basis. However, these decisions are commonly distributed among a multiple number of independent companies. Due to the incongruence between incentives of the firms involved in the supply chain...

As companies increasingly outsource production they must maintain high-quality standards by managing specific manufacturing and testing processes performed by their partners. In this paper, we investigate the case of a major telecommunications Original Equipment Manufacturer (OEM) that is evaluating strategic deployment of expensive testing equipme...

Purpose When approaching a stock‐out situation, a company should be able to actively manage the allocation of available products on the basis of customer requirements and priorities as well as contractual relationships. The purpose of this paper is to describe different order promising mechanisms and analyze how well they can contribute to the effe...

The major task of supply chain planning – as the tactical level of supply chain management – is the determination of supply-chain-wide master plans on a medium-term basis. Both in literature and in commercial supply chain management systems, a centralised approach to supply chain planning is frequently proposed. Due to the incongruence between ince...

Advanced available-to-promise (AATP) comprises of an assortment of methods and tools to enhance order promising responsiveness and order fulfillment reliability. This paper contributes to a theoretical framework for the development of models and algorithms supporting order quantity and due date quoting. At first, alternative generic AATP systems wi...

Supply Chain Management und LogistikOptimierung, Simulation, Decision Support 10.1007/3-7908-1625-6_3 Hans-OttoGünther, DirkC.Mattfeld and LeenaSuhl 3.Master Planning in Supply Chains RichardPibernik4 and EricSucky5 (4) Zaragoza Logistics Center, MIT — Zaragoza International Logistics Program, Avda. Gomez Laguna 25, 50009Zaragoza, Spain (5) S...

Available-to-Promise (ATP) comprises of a variety of tools that enhance the responsiveness of order promising and the reliability of order fulfilment. Based on customer requests (i.e. requested product, order quantity and delivery time window) they support “order quantity” and “order due date quoting” .

Nachdem die Flexibilitätsplanung im vorangegangenen Kapitel fundiert wurde (Abschnitt 3.2), ihre Unterstützung durch Entscheidungsmodelle dargestellt (Abschnitt 3.3) und Ansätze zur Messung und Bewertung der Flexibilität eines Systems analysiert wurden (Abschnitt 3.4), werden die gewonnenen Erkenntnisse nun für die Analyse und Gestaltung konkreter...

In ihrer im Jahr 1990 veröffentlichten Untersuchung zur Flexibilität von Produktionssystemen stellen die Autoren Sethi/Sethi fest: „The literature makes one thing abundantly clear: flexibility is a complex, multidimensional and hard-to-capture concept. At least 50 different terms for various types of flexibilities can be found in the manufacturing...

Ausgangspunkt dieser Arbeit war eine Obersicht über die verschiedenen in der Betriebswirtschaftslehre existierenden Flexibilitätsbegriffe und -arten. Sie zeigte, daß die unterschiedlichen Flexibilitätsbegriffe insbesondere durch verschiedene betriebswirtschaftliche Teildisziplinen geprägt sind und sich ein einheitliches und überschneidungsfreies Be...

Im Rahmen eines Forschungsprojektes hat das Unternehmen Celanese Ventures GmbH ein neuartiges Produktionsverfahren zur Erzeugung mehrfach ungesättigter Fettsäuren (Poly Unsaturated Fatty Acids — PUFA) entwickelt.

Aufbauend auf den in Kapitel 2 gewonnenen Erkenntnissen über Flexibilität als Eigenschaft von Systemen wird in diesem Kapitel gezeigt, wie diese Eigenschaft durch einen Entscheidungsträger zielgerichtet aufgebaut, aufrechterhalten und genutzt werden kann. Ziel dieses Kapitels ist es, das theoretische und methodische Fundament für die Flexibilitätsp...

„Das Produkt einer Linienfluggesellschaft, der Flug, ist ein verbindliches Transportleistungsangebot zu einem festen Zeitpunkt.“1