Refine
Year of publication
- 2014 (31) (remove)
Document Type
- Book chapter (31) (remove)
Is part of the Bibliography
- yes (31)
Institute
- ESB Business School (14)
- Life Sciences (9)
- Informatik (6)
- Technik (1)
- Texoversum (1)
Publisher
- Elsevier (6)
- Erich Schmidt (5)
- Haufe (4)
- Springer (3)
- BBE Handelsberatung GmbH (1)
- CRC Press (1)
- Carl Hanser (1)
- Deutscher Fachverlag (1)
- Hanser (1)
- Haupt (1)
Fragen, die in diesem Kapitel beantwortet werden:
Welche Bedeutung kommt der Projektplanung für ein erfolgreiches Projektmanagement zu?
Was zeichnet Phasenmodelle bei IT-Projekten aus, welche Varianten werden unterschieden, und inwiefern sind diese für die Projektplanung nützlich?
Wie ist eine Projektstrukturplanung für ein IT-Projekt anzulegen, und welche Konsequenzen ergeben sich dabei für den Projektablauf und die Phasenplanung?
Wie erfolgt eine Ablauf- und Terminplanung für IT-Projekte, und welche Instrumente und Methoden stehen zur Verfügung?
Aus welchen Elementen besteht eine gute Ressourcenplanung, und mit welchen Verfahren lässt sich eine Planoptimierung im Projektmanagement erreichen?
Gibt es wesentliche Teilschritte, die bei der Kostenplanung von IT-Projekten eingehalten werden müssen?
Inwiefern kommt einer ausgewogenen Risikoplanung für das Projektmanagement eine immer größere Bedeutung zu, und in welcher Weise kann diese Planungsaufgabe gelöst werden?
Silicones
(2014)
Silicones are found in a variety of applications with requirements that range from long life at elevated temperatures to fluidity at low temperatures. This chapter first considers silicone elastomers and their application in room temperature vulcanizing (RTV) and heat curing systems (HTV). Also, new technologies for UV curing are introduced. Coverage of RTVs includes both one-component and two-component systems and the different cure chemistries of each, and is followed by a separate discussion of silicone laminates. Due to the high importance of silicone fluids, they are also discussed. Fluids include polishes, release agents, surfactants, and dielectric fluids.
In the period from the 1950s to 2013, the American Food and Drug Administration (FDA) approved 1346 new molecular entities (NMEs) or new biologics entities (NBEs). On average, the approval rate was 20 NMEs per year. In the past 40 years, the number of new drugs launched into the market increased slightly from 15 NMEs in the 1970s to 25–30 NMEs since the 1990s. The highest number of new drugs approved by FDA was in 1996 and 1997, which might be related to the enactment of the Prescription Drug User Fee Act (PDUFA) in 1993.
The use of Wireless Sensor and Actuator Networks (WSAN) as an enabling technology for Cyber-Physical Systems has increased significantly in recent past. The challenges that arise in different application areas of Cyber- Physical Systems, in general, and in WSAN in particular, are getting the attention of academia and industry both. Since reliability issues for message delivery in wireless communication are of critical importance for certain safety related applications, it is one of the areas that has received significant focus in the research community. Additionally, the diverse needs of different applications put different demands on the lower layers in the protocol stack, thus necessitating such mechanisms in place in the lower layers which enable them to dynamically adapt. Another major issue in the realization of networked wirelessly communicating cyber-physical systems, in general, and WSAN, in particular, is the lack of approaches that tackle the reliability, configurability and application awareness issues together. One could consider tackling these issues in isolation. However, the interplay between these issues create such challenges that make the application developers spend more time on meeting these challenges, and that too not in very optimal ways, than spending their time on solving the problems related to the application being developed. Starting from some fundamental concepts, general issues and problems in cyber-physical systems, this chapter discusses such issues like energy-efficiency, application and channel-awareness for networked wirelessly communicating cyber-physical systems. Additionally, the chapter describes a middleware approach called CEACH, which is an acronym for Configurable, Energy-efficient, Application- and Channel-aware Clustering based middleware service for cyber-physical systems. The state of-the art in the area of cyberphysical systems with a special focus on communication reliability, configurability, application- and channel-awareness is described in the chapter. The chapter also describes how these features have been considered in the CEACH approach. Important node level and network level characteristics and their significance vis-àvis the design of applications for cyber physical systems is also discussed. The issue of adaptively controlling the impact of these factors vis-à-vis the application demands and network conditions is also discussed. The chapter also includes a description of Fuzzy-CEACH which is an extension of CEACH middleware service and which uses fuzzy logic principles. The fuzzy descriptors used in different stages of Fuzzy-CEACH have also been described. The fuzzy inference engine used in the Fuzzy-CEACH cluster head election process is described in detail. The Rule-Bases used by fuzzy inference engine in different stages of Fuzzy-CEACH is also included to show an insightful description of the protocol. The chapter also discusses in detail the experimental results validating the authenticity of the presented concepts in the CEACH approach. The applicability of the CEACH middleware service in different application scenarios in the domain of cyberphysical systems is also discussed. The chapter concludes by shedding light on the Publish-Subscribe mechanisms in distributed event-based systems and showing how they can make use of the CEACH middleware to reliably communicate detected events to the event-consumers or the actuators if the WSAN is modeled as a distributed event-based system.
Projektmanagement
(2014)
Seit den 1990er Jahren richten immer mehr Unternehmen ihre aufbau- und ablauforganisatorische Organisation nach Gesichtspunkten des Projektmanagements aus. Gerade im Produktentstehungsprozess setzt sich die Abkehr von starr getrennten Aufgaben und Tätigkeiten in funktional definierten Abteilungen hin zu einer teamorientierten Projektarbeit immer mehr durch. Projektmanagement ist in verschiedenen Ausprägungsstufen realisierbar. Angefangen bei der Festlegung von Projekten ohne Änderung der organisatorischen Abläufe über das Einfluss- und Matrix-Projektmanagement bis hin zur durchgängigen Projektorganisation des Unternehmens sind viele Mischformen möglich.
Processing
(2014)
In this chapter, some relevant aspects and illustrative examples of online monitoring tools as the basis for process control in the manufacturing and processing of thermosetting resins are briefly discussed. In principle, any chemical or physical information made accessible by sensors can be used for online monitoring of resin formation, resin location in the mold, and resin cure. For instance, changes in the flow properties of the reaction mixture are often routinely recorded in dependence of the reaction time during resin synthesis as a measure for the degree of conversion of raw materials into macromolecules or oligomers by applying rheometry in an in-process environment. Typically, a small sample of the reaction mixture is by-passed, subjected to rheological measurement, and re-introduced into the bulk reactor. In a similar way, pH measurements, turbidimetric measurements, or other analyses are performed. Although rheometry may not always be suitable for following resin cure (especially in cases where there is a very rapid increase in viscosity after initiation of the cure), [1] naturally, the method can in principle also be used in the subsequent processing of the thermosets, for instance in the curing of wood glue applied to wood specimen [2]. Similarly, pH changes during thermoset curing can be followed. Hence, an encyclopedic and comprehensive approach to present process control methods would systematically proceed according to the involved physical measurement principle. However, since only a very Brief sketch of means for monitoring thermoset processing can be given here, only a small, personally biased selection of important methods and application examples is addressed in the following sections. These examples hopefully illustrate some of the general strategies and solutions to problems that are typically encountered when processing thermosets.
Unsaturated polyester resins (UPR) and vinyl ester resins (VER) are among the most commercially important thermosetting matrix materials for composites. Although comparatively low cost, their technological performance is suitable for a wide range of applications, such as fiber-reinforced plastics, artificial marble or onyx, polymer concrete, or gel coats. The main areas of UPR consumption include the wind energy, marine, pipe and tank, transportation, and construction industries. This chapter discusses basic UPR and VER chemistry and technology of manufacturing, and consequent applications. Some important properties and performance characteristics are discussed, such as shrinkage behavior, flame retardance, and property modification by nanoparticles. Also briefly introduced and described are the practical aspects of UPR and VER processing, with special emphasis on the most widely used technological approaches, such as hand and spray layup, resin infusion, resin transfer molding, sheet and bulk molding, pultrusion, winding, and centrifugal casting.
Crosslinked thermoplastics
(2014)
Cross-linked thermoplastics represent an important class of materials for numerous applications such as heat-shrinkable tubing, rotational molded parts, and polyolefin foams. By cross-linking olefins, their mechanical performance can be significantly enhanced. This chapter covers the three main methods for the cross-linking of thermoplastics: radiation cross-linking, chemical cross-linking with organic peroxides, and cross-linking using silane-grafting agents. It also considers the major effects of the cross-linking procedure on the performance of the thermoplastic materials discussed.
Allyls
(2014)
This chapter addresses the importance and usage of the commercially low volume thermoset plastics group known as allyls. The three significant sub-elements of this group are poly(diallylphthalates), poly(diallylisophthalates), and poly(allyldiglycol carbonate). Chemistry, processing, and properties are also described. Allyl polymers are synthesized by radical polymerizations of allyl monomers that usually do not produce high-molecular-mass macromolecules. Therefore, only a few specific monomers can produce thermosetting materials. Diallyldiglycolcarbonate (CR-39) and diallylphthalates are the most significant examples that have considerably improved our everyday life.
This review gives a short overview of the physical processes involved in the formation of the polyelectrolyte multilayers (PEMs) and their destruction. These two processes are vital for the formation of PEMs with desired physical and chemical structures, and for loading them with active substances and their spatial controlled release. It includes a survey of the physical and chemical properties that are key points for controlling film nanostructure in relation to biological processes and different possibilities for controlling cell behavior by means of film composition, bioactivity, mechanical properties, and three-dimensional organization.
Die Verwaltung tritt uns als altruistische Institution gegenüber: Sie dient in der Regel nicht sich selbst, sie ist kein "Selbstzweck", sondern verfolgt regelmäßig andere, meist übergeordnete Ziele. Als der ausführende Arm der Politik soll sie deren politische Zwecke umsetzen, gleichzeitig aber, so zumindest in modernen, rechtsstaatlich organisierten Demokratien und unter dem Stichwort "public governance" Recht und Gesetz achten sowie Gemeinwohlinteressen wie Nachhaltigkeit und/oder soziale Gerechtigkeit durchsetzen.
Die Verwaltung ist über die Zuordnung zu den Systemen Recht und Politik hinaus in weitere soziale Funktionssysteme eingebunden. Sofern es sich z.B. um Verwaltung in Wissenschaft und Forschung handelt, wird sie sich mit dem Code und dem Kommunikationsmedium der Wissenschaft konfrontiert sehen. Die Wirtschaftsverwaltung muss sich dem binären Code "Zahlung/keine Zahlung" der Wirtschaft stellen.
Dieser Ausgleich zwischen den Systemen macht es notwendig, dass ethisch-moralische Werte in den Dilemma-Situationen in die Entscheidungsfindung einbezogen werden. Die entscheidende Orientierung liefern dabei die materialen Werte der Tugendethik. Der Mitarbeiter der Verwaltung darf sich in gravierenden Konfliktsituationen den Anforderungen der Tugendethik nicht entziehen, sondern muss sein Handeln an Hand ihrer Werte überprüfen. Im Ergebnis führt dieses Verfahren zu einem harmonischen Ausgleich zwischen der Systemtheorie und werteorientierten Ansätzen.
The powder coating of wood products as an emerging environmentally sustainable coating technology holds promise in terms of novel product quality features for engineered wood like medium-density fiberboards (MDFs). However, one major limitation currently impeding widespread application of powder coating technology is the availability of MDF panels that are suitable for this process. Typically, special-grade MDF panels are required that are more costly than standard-grade MDF panels to provide reliable coating quality, which makes powder coating economically unattractive for many users. Methods are needed that allow extending the range of available MDF grades. In the present study, three surface pretreatment approaches for MDFs were studied to increase the processability of standard-grade MDF in the powder coating process: atmospheric plasma pretreatment, infrared irradiation, and moisture equilibration in a climate chamber prior to electrostatic powder application. While atmospheric plasma treatment had no beneficial effect on the use of standard-grade MDF panels, both infrared preheating and preconditioning of the panels under controlled temperature–humidity conditions demonstrated that the range of MDF panels suitable for powder coating can be significantly extended by appropriate selection of the pretreatment procedure.
Cyanate esters
(2014)
Cyanate ester resins are an important class of thermosetting compounds that have experienced an ever-increasing interest as matrix systems for advanced polymer composite materials, which among other applications, are especially suitable for highly demanding functions in the aerospace or microelectronics industries. Other names for cyanate ester resins are cyanate resins, cyanic esters, or triazine resins. The various types of cyanate ester monomers share the aOCN functional group that trimerizes in the course of resin formation to yield a highly branched heterocyclic polymeric network based on the substituted triazine core structure. The basic reaction sequence leading to the typical cyanate ester polymer molecule is depicted in Figure 11.1. The curing reaction may take place with or without catalyst.
There are several intra-operative use cases which require the surgeon to interact with medical devices. We used the Leap Motion Controller as input device and implemented two use-cases: 2D-Interaction (e.g. advancing EPR data) and selection of a value (e.g. room illumination brightness). The gesture detection was successful and we mapped its output to several devices and systems.
Gemeinsam in einer multinational zusammengesetzten Gruppe in einer Fremdsprache Theater spielen: fördert dies interkulturelles und /oder transkulturelles Lernen? An einem interdisziplinären Theaterprojekt aus dem Hochschulbereich soll gezeigt werden, dass es idealerweise beidem dienlich sein kann.
Der erste Teil des Beitrags gibt einen Überblick über Potenziale und Risiken von dramapädagogischen Methoden im Fremdsprachenunterricht und ihren Bezug zum inter-/transkulturellen Lernen, während der zweite Teil ein Praxisbeispiel aus dem universitären Englischunterricht beschreibt: Studierende unterschiedlicher Fachrichtungen und Herkunftsländer inszenieren eine moderne Shakespeare-Bearbeitung, die sich mit zahlreichen Aspekten einer globalisierten Wirtschaft beschäftigt, nicht zuletzt auch interkulturellen Begegnungen im Geschäftsleben.
Bei der Zerspanung mit geometrisch definierter Schneide (z.B. Drehen, Fräsen, Bohren, Reiben, Sägen, Hobeln, Stoßen, Räumen) werden Zerspanwerkzeuge mit einer definierten Schneidengeometrie verwendet. Die Werte der einzelnen geometrischen Maße basieren auf Richt- und Erfahrungswerten. Die Definition der einzelnen Geometriemerkmale (z.B. Winkel) sind in DIN 6581 enthalten. In den letzten Jahren wurden zur Ermittlung des Prozessverhaltens unterschiedlicher Geometrieparameter Forschungsprojekte durchgeführt, die die Einflüsse der Schneidengestaltung untersuchen (z.B. Zabel 2010). Die Schneidengeometrie wird in der Regel mit den Verfahren Schleifen, Erodieren oder Laserbearbeitung erzeugt. Die Werkzeuge werden auf Universal- oder Spezial(werkzeugschleif)maschinen hergestellt und aufbereitet. Die Ausstattung und der Automatisierungsgrad richtet sich nach den zu bearbeitenden Merkmalen der Werkzeuge und deren Häufigkeit.
A configuration-management-database driven approach for fabric-process specification and automation
(2014)
In this paper we describe an approach that integrates a Configuration- Management-Database into fabric-process specification and automation in order to consider different conditions regarding to cloud-services. By implementing our approach, the complexity of fabric processes gets reduced. We developed a prototype by using formal prototyping principles as research methods and integrated the Configuration-Management-Database Command into the Workflow- Management-System Activiti. We used this prototype to evaluate our approach. We implemented three different fabric-processes and show that by using our approach the complexity of these three fabric-processes gets reduced.
Unternehmen arbeiten in Netzwerken mit vielfältigen Lieferanten- und Kundenbeziehungen und an unterschiedlichen Stellen der Wertschöpfungsketten. Dem Supply-Chain-Controlling kommt daher eine sehr hohe Bedeutung im Unternehmen zu. Es unterstützt das Management bei der Gestaltung und Steuerung unternehmensübergreifender Material-, Informations- und Geldflüsse. Dabei soll es die Effizienz und die Effektivität des unternehmerischen Handelns bzw. Entscheidens gewährleisten.
Der Beitrag zeigt, welche grundlegenden Managementmethoden und -instrumente sich identifizieren lassen, um den Unterschied zwischen dauerhaft erfolgreichen und nicht erfolgreichen Unternehmen zu erklären. In diesem Konext wird ein Ansatz für einen Leistungsmanagement-Gesamtprozess entwickelt, in dem die zentralen Problemquellen bei der Einführung von Performance Management eingeordnet und erläutert werden.