Sökresultat

Filtyp

Din sökning på "*" gav 526291 sökträffar

User-Driven Innovation - Context and Cases in the Nordic Region

The nature of innovation is changing. An increasingly globalized society, enabled by information and communication technologies (ICT), has changed the process of value creation and shifted the balance of power between firms and individual consumers – or users. Companies can no longer rely solely on operational efficiency or technological superiority in order to create a competitive advantage. Tod

Feathers by day, membranes by night - Aerodynamic performance in bird and bat flight

Popular Abstract in English Animal flight has always intrigued people, and different aspects of animal flight have therefore widely been studied by biologists, physicists and engineers. At least to me, the aspect concerning the aerodynamics of animal flight in particular is very interesting because of the complex temporal varying wake dynamics as a result of continually wing morphing in flapping fThe efficiency and performance of a flying animal is directly related to the aerodynamics around its body and flapping wings. Here, I have developed methods for quantifying the wake dynamics around a flying animal. The results are used to estimate the aerodynamic performance of flapping flight. Using these methods, I have studied flight of the Pied Flycatcher (Ficedula hypoleuca), the Pallas’ Long

Test Case Generation for Flexible Real-Time Control Systems

Temporal correctness is crucial for the dependability of real-time control systems. A problem with testing such systems is the dependency on the execution orders of tasks. Mutation-based testing criteria have been proposed to determine which execution orders need to be exercised to verify that real-time systems are timely. For flexible control systems, timeliness in itself may only be relevant for

Who’s asking the right question? Patterns and diversity in the literature of new venture creation

The aims of this chapter are to (i) place the research on new venture creation into the historical context of entrepreneurship research in general, (ii) highlight the pioneering works of William Gartner, and (iii) describe the development and characteristics of the research on new venture creation as an area within entrepreneurship research. The discussion in the chapter is mainly based on a set o

Contextual Inquiry as a Critical Perspective in Research

Human systems create problem spaces that are ambiguous, uncertain and constantly changing. This requires researchers to find approaches to inquiry that can be used to explore inconsistent and ill-defined phenomena. Much analytical work is done without in-depth consideration of context. This means that important dimensions are lost – rigour in investigation is prioritised over relevance. Research m

Russian and American options under exponential phase-type Lévy models

Consider the American put and Russian option (Ann. Appl. Probab. 3(1993)603; Theory Probab. Appl. 39 (1994)103; Ann. Appl. Probab. 3(1993)641) with the stock price modeled as an exponential Lévy process. We find an explicit expression for the price in the dense class of Lévy processes with phase-type jumps in both directions. The solution rests on the reduction to the first passage time problem fo