The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A central problem in marketing is the clear understanding of consumer's choice or preferences. This is achieved by designing questionnaires and then analyzing the answers of would be customers. The traditional approach in the conjoint analysis has been the designing of non-adaptive questionnaires. The questionnaire is predetermined and not at all influenced by respondent's answers. This paper aims...
This paper proposes a sizing procedure based on the observed extremes of solar radiation. This is different from the conventional way of PV system sizing, which is based on the average characteristics of the synthesized solar radiation. Since sizing for a photovoltaic (PV) system is an important area in the application of solar energy, the theoretical aspects of sizing formulas and loss of power probability...
Supercapacitors (SCs) are promising energy storage devices not only for high-power applications but also as alternatives to secondary batteries. Since the energy density of the SCs is low and their voltage varies widely, their energy should be delivered to load efficiently over a wide voltage range. This paper proposes a novel SC reconfiguration technique by which SC module voltage is roughly regulated...
An interleaved PV stand-alone dc bus system, equipping with incremental conductance (IC) derived MPPT and bi-directional dc-to-dc converter (BDC), manipulated by an energy management control (EMC) is proposed. The EMC can adaptively provide interleave control for pumping energy from PV panel without intermittence and maintain well load regulation through a bi-directional dc-to-dc converter (BDC).
As sensor nodes are powered by battery of limited lifespan, energy consumption has always been an important issue in sensor networks. New generation of sensor network technology bring about the possibility of constructing a spatial index over a sensor network such that sensor queries are forwarded only to the relevant nodes. Existing spatial indices share the common feature of using the same node...
In recent years the onboard storage on wireless sensor motes has grown very dramatically, going from Kilobytes (KB) of available space to Gigabytes (GB). This massive increase has primarily come from the addition of support for micro or mini Secure Digital (SD) flash cards on the nodes. This extra storage capacity has led to new use cases for sensor motes which result in fewer data transmissions as...
In energy constrained wireless sensor networks, it is very important to conserve energy and prolong active network lifetime while ensuring proper operations of the network. To extend the lifetime of a sensor network, one common approach is to dynamically schedule sensors?? work/sleep cycles (or duty cycles). In our work we have considered cluster based heterogeneous wireless sensor network, by deploying...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.