Hamburg model basin : numerical and experimental investigations on the dependence of the fluctuations of thrust and torque on the blade area ratio of four-blade ship-propellers /

Contract no. N 62558-2223.

The carrier’s exemption from liability in the Hague, Hamburg and Rotterdam Rules : an examination from the perspectives of fairness and clarity

Le commerce international est souvent relié au transport maritime. La poursuite des règles uniformes se rapportant à ce dernier avait débuté à la fin du XIXe siècle et a abouti à l’émergence des Règles de La Haye, des Règles de Hambourg et des Règles de Rotterdam. L’exonération du transporteur maritime, qui suscitait des controverses favorisant le développement des règles maritimes internationales, a été réglementée de trois façons différentes dans les trois Règles précitées. La question principale abordée dans la thèse présente est si elles sont suffisamment satisfaisantes. Une autre question, qui se pose s’il est prouvé qu’aucune d’entre elles ne l’est, est quelle serait une meilleure façon. Pour y répondre, deux critères, soit la justice et la clarté, ont été choisis. Les recherches effectuées dans le cadre de la thèse présente visent à donner une évaluation profonde des régimes existants en matière de réglementation de l’exonération du transporteur maritime ainsi que des suggestions d’amélioration à cet égard.

„Wie?! Das Ding soll mich jetzt immer begleiten?“ : eine morphologische Untersuchung zur Beziehung zwischen Rollstuhl und Nutzer/innen

Seit jeher ist der Mensch mit unzähligen Gegenständen in Kontakt, gebraucht sietagtäglich für sein Handeln. Diese Arbeit hat sich zum Ziel gesetzt, einen psychologischenBeitrag zu der bisher sehr wenig beforschten Mensch-Ding-Beziehung zu leisten unddabei auf den Phänomen-Bereich der Rollstühle – als notwendigen und zwiespältigwahrgenommenen Gegenstand -- zu fokussieren.Im ersten Teil dieser Arbeit werden zunächst theoretische Überlegungen zu derBeziehung angestellt, gründend auf den Vorarbeiten von Heubach und seinerGegenständlichkeitskonzepte sowie Habermas‘ ermittelten Funktionen persönlicherObjekte. Im zweiten Teil der Arbeit werden 11 Tiefeninterviews einer psychologischmorphologischenAuswertung unterzogen, um die ‚Verwicklungen‘ zwischen einemRollstuhl und seinem Nutzer/ seiner Nutzerin hermeneutisch aufzudecken. Im Kernherausstechend ist hierbei die Frage, wie die beobachtete Ambivalenz zum Rollstuhlgenau gestaltet ist und wie sich angesichts dieser alltäglich notwendigen Nutzung desRollstuhls ein seelisches Gleichgewicht bzgl. dieser Ambivalenz herstellt?Es zeigt sich, dass sich in dem Beziehungsgefüge ein Extrem aufspannt, den Rollstuhleinerseits fortwährend anzunehmen und in sein Leben zu integrieren, man gleichsamdurch seine ‚Alltags-Besonderheit‘ jedoch nie ‚fertig‘ damit ist. Während des stetigenVersuchs den Rollstuhl zu akzeptieren, beginnt er unter Umständen mehr Funktionen zuerfüllen, als für das Hilfsmittel zu erwarten gewesen wäre. Angesichts eines alltäglicherlebten Autonomie-Verlustes aufgrund der Rollstuhlnutzung hält sich das Extrem vorallem mittels bestmöglicher Anpassungen an den Rollstuhl und relativierenderGedankengänge hinsichtlich der eigenen Situation in einem erträglichen Gleichgewicht.

Produsage and business : sharing your brand with users

Relations between brands and their users continue to be affected by a traditional perspective that sees the producers and consumers of goods and services as inherently different animals. In the emerging information and knowledge economy, and especially in online contexts, this model is no longer sustainable. Instead, spearheaded by the Web 2.0 phenomenon, there is a trend towards the fusing of production and usage as a new, hybrid process of produsage. This presentation presents the key characteristics driving produsage processes, and describes four guiding principles for businesses as they share their brand with users: * Be open. * Seed community processes by providing content and tools. * Support community dynamics and devolve responsibilities. * Don't exploit the community and its work.

User-Generated Content als Qualitätsmedium? Alternative Anreize für Qualitätscontent

Angetrieben und unterstützt durch Web-2.0-Technologien, gibt es heute einen Trend zur Verbindung der Nutzung und Produktion von Inhalten als Produtzung (engl. produsage ). Um dabei die Qualität der erstellten Inhalte und eine nachhaltige Teilnahme der Nutzer sicherzustellen, müsen vier grundlegende Prinzipien eingehalten werden: * Größtmögliche Offenheit. * Ankurbeln der Gemeinschaft durch Inhalte und Hilfsmittel. * Unterstützung der Gruppendynamik und Abtretung von Verantwortung. * Keine Ausbeutung der Gemeinschaft und ihrer Arbeit.

Integrating engineering model eliciting activities in elementary school curricula

This paper argues for a future-oriented, inclusion of Engineering Model Eliciting Activities (EngMEAs) in elementary mathematics curricula. In EngMEAs students work with meaningful engineering problems that capitalise on and extend their existing mathematics and science learning, to develop, revise and document powerful models, while working in groups. The models developed by six groups of 12-year students in solving the Natural Gas activity are presented. Results showed that student models adequately solved the problem, although student models did not take into account all the data provided. Student solutions varied to the extent students employed the engineering context in their models and to their understanding of the mathematical concepts involved in the problem. Finally, recommendations for implementing EngMEAs and for further research are discussed.

Towards practical implementation of time optimal trajectories for underwater vehicles

In this paper, we are concerned with the practical implementation of time optimal numerical techniques on underwater vehicles. We briefly introduce the model of underwater vehicle we consider and present the parameters for the test bed ODIN (Omni-Directional Intelligent Navigator). Then we explain the numerical method used to obtain time optimal trajectories with a structure suitable for the implementation. We follow this with a discussion on the modifications to be made considering the characteristics of ODIN. Finally, we illustrate our computations with some experimental results.

Managing specialised knowledge in technopreneurial firms : the Australian experience

Technology-oriented young firms play an important role for innovation and commercialisation of new ideas. These firms are often founded by engineers, scientists or academics who posses great scientific/technological knowledge, but limited know-how in other aspects of managing a business including knowledge management. Successful managing and integrating their specialised knowledge is of particular importance when it comes to developing a new product or process. This article therefore focuses on the particularities of the knowledge management process in technopreneurial firms. Using a qualitative investigation from a sample of Australian SMEs, a number of key observations are derived which show the challenges of managing knowledge and how important knowledge management is as a management tool for R&D and innovation process in technology-oriented SMEs. Findings suggest that knowledge management and integration processes in these firms are very much project focused and mainly based on ad hoc and informal processes and not embedded within the overall organisational routines.

Wilkins Hill : on the cusp of meaning

If contemporary artworks are often considered to be puzzles or riddles, then Wilkins Hill take this to a new level. Their recent exhibition Windows impersonating other windows, confronts viewers with an extremely ludic configuration: a spa bath full of almonds, towel racks placed before photos of Martin Heidegger distorted in neat grids, a video of a water tower in a Hamburg park, wooden cut-out speech bubbles and monitors that continuously play interviews with the artists themselves. What does it all mean?

Generator interconnection procedures at the Midwest ISO

The Midwestern US is a wind-rich resource and wind power is being developed in this region at a very brisk pace. Transporting this energy resource to load centers invariably requires massive transmission lines. This issue of developing additional transmission to support reliable integration of wind on to the power grid provides a multitude of interesting challenges spanning various areas of power systems such as transmission planning, real-time operations and cost-allocation for new transmission. The Midwest ISO as a regional transmission provider is responsible for processing requests to interconnect proposed generation on to the transmission grid under its purview. This paper provides information about some of the issues faced in performing interconnection planning studies and Midwest ISO's efforts to improve its generator interconnection procedures. Related cost-allocation efforts currently ongoing at the Midwest ISO to streamline integration of bulk quantities of wind power in to the transmission grid are also presented.

Security constrained economic dispatch considering wind energy conversion systems

The available wind power is stochastic and requires appropriate tools in the OPF model for economic and reliable power system operation. This paper exhibit the OPF formulation with factors involved in the intermittency of wind power. Weibull distribution is adopted to find the stochastic wind speed and power distribution. The reserve requirement is evaluated based on the wind distribution and risk of under/over estimation of the wind power. In addition, the Wind Energy Conversion System (WECS) is represented by Doubly Fed Induction Generator (DFIG) based wind farms. The reactive power capability for DFIG based wind farm is also analyzed. The study is performed on IEEE-30 bus system with wind farm located at different buses and with different wind profiles. Also the reactive power capacity to be installed in the wind farm to maintain a satisfactory voltage profile under the various wind flow scenario is demonstrated.

Intended and actual avoidance of road use situations by older drivers and pedestrians, by gender and age

• The Queensland context • Rationale and aims • Method • Demographics and basic data • Avoidance of driving and walking situations • Success of intended avoidance • Further analyses (preliminary results) • Implications