Search results

The paper aims to consider the problem of the influence of mounting power metal-oxide semiconductor (MOS) transistors operating in the Totem–Pole circuit on energy losses in this circuit.

Using the computer simulation in SPICE software, the influence of such factors as on-state resistance of the channel of the MOS transistor, the self-heating phenomena in this transistor and resistance of wires connecting transistors with the other part of the circuit on characteristics of the considered circuit operating with resistor, inductor and capacitor (RLC) load is analyzed. The selected results of calculations are compared with the results of measurements.

On the basis of the obtained results of calculations, some recommendations concerning the manner of mounting the considered transistors, assuring a high value of watt-hour efficiency of the process of energy transfer to the load are formulated.

The investigations were performed in the wide range of the frequency of the signal stimulating the considered circuit, but the results of calculations were presented for 2 selected values of this frequency only.

The considered analysis was performed for the circuit dedicated to power supplied of an elecrolyser.

Presented results of calculations prove that in some situations, the value of watt-hour efficiency of the considered circuit is determined by the length and the cross-section area of the applied wires bringing the signal to the connectors of the transistors and to load. On the other hand, self-heating phenomena in the power MOS transistors can lead to doubling power losses in these devices.

AN incentive is a motive and it has long been accepted as axiomatic in the world of industry that the only motive which will move men to greater effort is a financial one. Wage incentive schemes operate in large sections of manufacturing industry today and any increase in a firm's productivity is almost automatically attributed to them.

What do cleaning toilets and police work have in common? They're dirty work? Someone has to do them? And they are both booming markets for service robots. Consider the following:

Digital libraries are becoming vital in basic research and general surfing of the Internet and the Web. Unlike text‐based digital libraries, image intensive digital libraries have inherent problems of slow downloading and uploading. These bottlenecks are caused by low bandwidth at the “last mile”, the distance between the telecommunications carriers’ distribution center – or central office and the user premises. Telecommunications technologies which are commonly used to alleviate this problem are: high end analog modems, T… series, frame relay, ISDN, cable modems, digital subscriber line and satellites. The article summarizes the latest developments of these technologies and how they can be used by various types of information professionals and end‐users in accessing digital libraries.

The purpose of this paper is to address a project for lighting an old town in Italy. Its originality lies in the holistic approach that aims to fulfil several objectives. One is to reduce energy consumption by using efficient lamps and advanced control systems; the second one is to make the network viable and useful for many purposes by integrating ICT devices; the third one is to provide a new identity to the older part of the city by using new technologies and design concepts; while the last one is to ensure street and pedestrian safety according to codes and standards.

The plan of the city of Bagheria and the stock of luminaires of the city are analysed. A multidisciplinary approach has been adopted in order to: analyse the existing lighting infrastructure highlighting critical areas; design a new displacement and select typologies of luminaries able to provide proper light quality and distribution; propose an aesthetic solution and technical design for relevant historical building; and to include in the design process the concept of a new multifunctional pole. Together with an analysis of social benefits, an assessment of economic costs and benefits are discussed.

The project allows good energy savings, meets the standard requirements and gives a relevant and strategic improvement in social and environmental management of the city.

The work provides an example of integrated design of street lighting infrastructures for urban renovation in old cities in degraded environments.

As intricate mental constructions, destination images reflect cultural, intellectual and existential backgrounds of individuals, communities and social groups, as well as marketing strategies. In the case of Banff National Park, for example, marketing strategies have promoted a potential need for wilderness and natural environment related experiences that is expressed in western post‐industrialized societies. However, touristic development often creates places structured to fit suitable images suggested by the market and leads to the co‐existence of multiple images for a single destination. The resulting tourist landscapes very often are divorced from the original setting, atmosphere, and characteristics of the real place.

Increasing recognition is being given to the fact that simple solutions to organisational problems are no longer effective in complex environments. Corporations are now acknowledging many advantages in changing from a traditional to new non‐traditional models of organisations. The article considers how an American corporation aimed to remain competitive in a sharply competitive environment, while still retaining its reputation for quality creativity and leadership.

Encapsulates the debate on the topics of confusion in consumption and the return of community. Starting with an ethnosociological analysis structuring the passage from modernity to postmodernity around the metamorphosis of the social link, aims at clarifying and explaining the different levels of the postmodern confusion in consumption. Modernity entered history as a progressive force promising to liberate humankind from everyday obligations and traditional bonds. As a consequence, modern consumption emphasized essentially the utilitarian value (“use value”) of products and services. Postmodernity, on the contrary, can be said to crown not the triumph of individualism, but the beginning of its end with the emergence of a reverse movement of a desperate search for community. With the neo‐tribalism distinguishing postmodernity, everyday life seems to mark out the importance of a forgotten element: the social link. Consequently, postmodern consumption appears to emphasize the “linking value” of products and services. Concludes with an exploration of the implications of postmodernity for rethinking marketing with the integration of the linking value concept.

This paper aims to present an autobiographical account on the life of Terrence H. Witkowski and his development as a marketing and consumption historian.

This paper is an autobiography and intellectual history.

The author traces his interest in history to childhood travel, to growing up in a home furnished with early American décor and to a lifelong passion for antique collecting. Historical research in marketing and consumption fit his independent personality, and has made the best use of his scholarly skill set.

This essay describes one person’s journey to becoming a marketing and consumption historian.