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Um geeignete Instrumente fur die Gestaltung gesunder digitaler Arbeit zu entwickeln, wurde zunachst eine Wissensbasis zur Identifikation zentraler Themen geschaffen. Zum Einsatz kamen Unternehmensbegehungen, Interviews mit zentralen Akteuren der Technologieeinfuhrung und des Arbeits- und Gesundheitsschutzes, Beschaftigtenbefragungen sowie Befragungen in verschiedenen Branchennetzwerken. Dadurch konnte eine Vielzahl relevanter Themen identifiziert werden. Im GAP-Projekt wurde der Fokus auf folgende Inhalte gelegt: Datenschutz, Umgang mit Informationsuberflutung, Einsatz von Gefahrdungsbeurteilungen psychischer Belastungen mit Fokus auf Industrie 4.0, Gewinnung und Sicherung von Fachkraften, Austausch mit anderen Unternehmen zu Erfahrungen von Technikeinfuhrung, zu den damit verbundenen Praventionspotenzialen sowie zu den Auswirkungen auf Gesundheit, Arbeits- und Gesundheitsschutz und Personalthemen. Dazu wurden Instrumente entwickelt und eine Auswahl davon in zwei mittelstandischen Unternehmen erprobt. Zielgruppen sind das betriebliche Management und Betriebsrate, Gesundheitsschutz-Akteure sowie Koordinatoren uberbetrieblicher Netzwerke. Es entstanden Wissensspeicher fur Betriebe und Netzwerke (Praxisbeispiele und Informations-Modul), betriebliche Instrumente der Gefahrdungsbeurteilung (Fragebogen) und der Qualifizierung (Workshop-Unterlagen, Handreichungen) sowie uberbetriebliche Instrumente der Netzwerkgestaltung. Neben diesen betrieblichen und uberbetrieblichen Gestaltungsinstrumenten werden konkrete Erfahrungen aus zwei mittelstandischen Unternehmen bei der Gestaltung gesunder Arbeit und der Entwicklung eines ganzheitlichen Gesundheitsschutzes berichtet.

Zu den wichtigsten Umweltdaten zahlen Klima-, Luft- und Bodenparameter, Landbedeckung, Wasserstand und -qualitat. Um Umweltinformationssystemen aufbauen zu konnen, braucht es ein Verstandnis dafur, welche Daten und Indikatoren mit welcher Methode fur welche Gebiete und in welcher Regelmasigkeit zu erheben sind. Eine Fulle an Umweltdaten wird heute mittels Satelliten- und Lasertechnik bereitgestellt. Um diese Daten systematisch erfassen und entsprechend verarbeiten zu konnen, benotigt man in vielen Handlungsfeldern des UBRM Methoden der Fernerkundung und Geoinformation. Umweltinformationssysteme konnen Daten auch fur eine grosere Gruppe an Interessierten, z.B. uber Social Media, bereitstellen. Je nach Zielgruppe aufbereitet, geben sie Auskunft uber die naturliche, gebaute und soziale Umwelt und deren Wechselwirkungen. Diese Umweltdaten konnen fur hoheitliche Aufgaben wie Raum- und Umweltplanung, fur private Unternehmen, etwa in der Logistikbranche, und fur die Gesellschaft, etwa bei Hochwasserwarnungen, als Entscheidungsgrundlage herangezogen werden.

Jordan-messbare Teilmengen des ℝn, Jordan-Volumen, mehrdimensionale Integrierbarkeit, Satz von Fubini.

Zwischenwertsatz, Satz von Maximum und Minimum, Bilder von Intervallen unter stetigen Funktionen.

Konvergenz von Folgen in ℝn, stetige Funktionen, Bezug zu offenen und abgeschlossenen Mengen.

Diffeomorphismen: definierende Bedingungen, Bijektivitat, Umkehrbarkeit, Verkettung; Umkehrsatz und lokale Diffeomorphismen.

Ubersetzen zwischen logischen Formeln und naturlicher Sprache, Ungleichungen zwischen reellen Zahlen, Betrag einer reellen Zahl, Umgang mit einfachen Gleichungen, Mengen und Mengeninklusionen.

Riemann-Integral, Bezug zu Flacheninhalten, Umgang mit Integrierbarkeit bei Produkten, Deutung von Grenzwerten als Integrale.

Charakterisierung der Integrierbarkeit mittels Riemann-Summen und mittels Ober- und Untersummen, Bezuge zwischen den Eigenschaften Integrierbarkeit, Stetigkeit, Monotonie, Beschranktheit.

Supremumsnorm beschrankter Funktionen, punktweise und gleichmasige Konvergenz, Stetigkeit und Differenzierbarkeit der Grenzfunktion, Konvergenz von Funktionenreihen, Potenzreihen.

Menge aller Stammfunktionen zu einer Funktion, Integralberechnung mit Stammfunktionen, Verwendung des Hauptsatzes der Differential- und Integralrechnung.

e-Umgebungen, offene Mengen, abgeschlossene Mengen, Konvergenz von Folgen bezuglich der diskreten Metrik.

Differenzierbare Funktionen, Bedeutung des Mittelwertsatzes, Kriterien fur Monotonie von Funktionen.

Jacobi-Matrix von Verkettungen von Abbildungen, Definition und Berechnung von Richtungsableitungen, Lage der Niveaumengen einer Abbildung.

Maximum und Minimum sowie Supremum und Infimum von Mengen reeller Zahlen, Intervallschachtelungen und Vollstandigkeit.

This chapter deals with advanced concepts for the configuration and management of business process variants. Typically, for a particular business process, different variants exist. Each of them constitutes an adjustment of a master process (e.g., a reference process) to specific requirements building the process context. Contemporary Business Process Management tools do not adequately support the modeling and management of such process variants. Either the variants have to be specified in separate process models or they are expressed in terms of conditional branches within the same process model. Both methods can result in high model redundancies, which make model adaptations a time-consuming and error-prone task. In this chapter, we discuss advanced concepts of our Provop approach, which provides a flexible and powerful solution for managing business process variants along their lifecycle. Such variant support will foster more systematic process configuration as well as process maintenance.

A large-scale research project involving many research and industry organizations working on a common goal should be an ideal basis for profound technology evaluations. The possibility for industrial case studies in multiple settings ought to enable reliable quantitative assessment of the performance of new technologies in various real-world settings. However, due to diverse challenges, such as internal agendas, implicit constraints, and unaligned objectives, leveraging this potential goes beyond the usual challenge of cat-herding in such projects. Based on our experience from coordinating technology evaluations in several research projects, this paper sketches the typical issues and outlines an approach for dealing with them. Although new in its composition, this approach brings together principles and techniques perceived to have been useful in earlier projects (e.g., cross-organizational alignment, abstract measures, and internal baselining). Moreover, as we are currently applying the approach in a large research project, this paper presents first insights into its applicability and usefulness.

Tor is the most popular low-latency anonymity network for enhancing ordinary users’ online privacy and resisting censorship. While it has grown in popularity, Tor has a variety of performance problems that result in poor quality of service, a strong disincentive to use the system, and weaker anonymity properties for all users. We observe that one reason why Tor is slow is due to low-bandwidth volunteer-operated routers. When clients use a low-bandwidth router, their throughput is limited by the capacity of the slowest node.

Tor, an anonymity network formed by volunteer nodes, uses the estimated bandwidth of the nodes as a central feature of its path selection algorithm. The current load on nodes is not considered in this algorithm, however, and we observe that some nodes persist in being under-utilized or congested. This can degrade the network’s performance, discourage Tor adoption, and consequently reduce the size of Tor’s anonymity set. In an effort to reduce congestion and improve load balancing, we propose a congestion-aware path selection algorithm. Using latency as an indicator of congestion, clients use opportunistic and lightweight active measurements to evaluate the congestion state of nodes, and reject nodes that appear congested. Through experiments conducted on the live Tor network, we verify our hypothesis that clients can infer congestion using latency and show that congestion-aware path selection can improve performance.

The key role of an effective system is the thermal design of the cavity formed by the radiator, mirrors and PV cells, as well as a good match of the these components. The important TPV figures of merit, high efficiency and high electrical power density critically depend on the heat transfer between the radiator and the PV cell in the TPV cavity. Radiative heat transfer in the cavity needs to be optimised in terms of the spectral, angular and spatial radiation distributions.

Tor is one of the most widely used privacy enhancing technologies for achieving online anonymity and resisting censorship. While conventional wisdom dictates that the level of anonymity offered by Tor increases as its user base grows, the most significant obstacle to Tor adoption continues to be its slow performance. We seek to enhance Tor's performance by offering techniques to control congestion and improve flow control, thereby reducing unnecessary delays. To reduce congestion, we first evaluate small fixed-size circuit windows and a dynamic circuit window that adaptively re-sizes in response to perceived congestion. While these solutions improve web page response times and require modification only to exit routers, they generally offer poor flow control and slower downloads relative to Tor's current design. To improve flow control while reducing congestion, we implement N23, an ATM-style per-link algorithm that allows Tor routers to explicitly cap their queue lengths and signal congestion via back-pressure. Our results show that N23 offers better congestion and flow control, resulting in improved web page response times and faster page loads compared to Tor's current design and other window-based approaches. We also argue that our proposals do not enable any new attacks on Tor users' privacy

TPV systems can be classified, by the kind of reaction of the heat source, which is either a chemical reaction (rearrangement of the outer electrons of the atoms) or a nuclear reaction (rearrangement of the nucleus of the atoms). Nuclear reactions are of fusion or fission type. This classification results in three major TPV heat sources which are the combustion of fuels (usually hydrocarbons), solar heat and nuclear sources ( not considered here further, because effective exploitation seems to be decades in the future.

We present a work-in-progress novel framework for the creation, delivery and viewing of multi-view hypermedia intended for mobile platforms. We utilize abstractions over creation and delivery of content and a unified language scheme (through XML) for communication between components. The delivery mechanism incorporates server-side processing to allow inclusion of additional features such as computer vision-based analysis or visual effects. Multi-view video is streamed live to mobile devices which offer several mechanisms for viewing hypermedia and perspective selection.

This chapter discusses some heat transfer theory relevant to TPV conversion. Heat transfer is concerned with the transport of thermal energy due to a temperature difference. Time independent (steady-state) and time dependent (transient) heat transfer can be distinguished. For TPV conversion in most cases steady-state heat transfer is considered. Start-up and shutdown processes of the TPV system may require addressing transient heat transfer and thermo-mechanical stress phenomena. Three modes of heat transfer are distinguished namely, conduction, convection and radiation.

This chapter deals with advanced concepts for the configuration and management of business process variants. Typically, for a particular business process, different variants exist. Each of them constitutes an adjustment of a master process (e.g., a reference process) to specific requirements building the process context. Contemporary Business Process Management tools do not adequately support the modeling and management of such process variants. Either the variants have to be specified in separate process models or they are expressed in terms of conditional branches within the same process model. Both methods can result in high model redundancies, which make model adaptations a time-consuming and error-prone task. In this chapter, we discuss advanced concepts of our Provop approach, which provides a flexible and powerful solution for managing business process variants along their lifecycle. Such variant support will foster more systematic process configuration as well as process maintenance.

For a particular business process, typically, different variants exist. Each of them constitutes an adjustment of a basic process (e.g. a reference process) to specific requirements building the process context. Contemporary business process management (BPM) tools, however, do not adequately support the modeling and management of process variants. Either the variants have to be specified by separate process models or they are expressed in terms of conditional branches within the same process model. Both methods can lead to high model redundancies, which make model adaptations a time consuming and error-prone task. In this paper we discuss advanced modeling concepts of our Provop approach, which provides a flexible and powerful solution for modeling and managing process variants. With Provop, a particular process variant can be configured at a high level of abstraction by applying a set of well-defined change operations to a basic process model.

Recent work has focused on hiding explicit network identifiers such as hardware addresses from the link layer to enable anonymous communications in wireless LANs. These protocols encrypt entire wireless packets, thereby providing unlinkability. However, we find that these protocols neglect to hide identifying information that is preserved within the wireless physical layer. We propose a technique using commodity wireless hardware whereby packets can be linked to their respective transmitters using signal strength information, thus degrading users' anonymity. We discuss possible countermeasures, but ultimately we argue that controlling information leakage at the physical layer is inherently difficult.

To date, there has yet to be a study that characterizes the usage of a real deployed anonymity service. We present observations and analysis obtained by participating in the Tor network. Our primary goals are to better understand Tor as it is deployed and through this understanding, propose improvements. In particular, we are interested in answering the following questions: (1) How is Tor being used? (2) How is Tor being mis-used? (3) Who is using Tor? To sample the results, we show that web traffic makes up the majority of the connections and bandwidth, but non-interactive protocols consume a disproportionately large amount of bandwidth when compared to interactive protocols. We provide a survey of how Tor is being misused, both by clients and by Tor router operators. In particular, we develop a method for detecting exit router logging (in certain cases). Finally, we present evidence that Tor is used throughout the world, but router participation is limited to only a few countries.