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991.
This research examines how European citizens decide to disclose and protect their personal data and thereby reveals cultural and generational divides. Focus group discussions featured either young people, aged 15 to 24 years, or adults, between 25 and 70 years of age, and were conducted in seven EU member states. The results of a computer-aided text analysis with two complementary software packages suggest similarities and differences in participants’ views and privacy concerns (PC). Responsibility is relevant to personal data management, which represents a hotly contested issue. A geographical north–south divide appears for the importance of responsibility as opposed to trust. Moreover, people regard disclosure differently in the south (as a choice) and east (as forced) of Europe. Younger people express more positive attitudes toward data management, feel more responsible, and are more confident in their ability to prevent possible data misuse. Their lower PC and greater protective behaviours (i.e., a potential reversed privacy paradox) may help explain contradictory results in prior literature. These results offer significant and useful theoretical, managerial, and policy implications. 相似文献
992.
In this communication, a mathematical model based on feed-forward artificial neural network algorithm is presented, which can estimate hydrate dissociation conditions for the hydrogen+water and hydrogen+tetrahydrofuran+water systems. To develop this algorithm, the experimental data for the hydrate dissociation conditions of the latter two systems with different concentrations of tetrahydrofuran in aqueous phase below its stoichiometric concentration (i.e., ?0.059) have been used. Independent experimental data (not used in training and developing this algorithm) have been employed to examine the reliability of this method. It is shown the agreement between the predictions and the experimental data is acceptable demonstrating the reliability of this algorithm as a predictive tool. 相似文献
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Aurélie Bechoff Andrew Westby Constance Owori Geoffrey Menya Claudie Dhuique‐Mayer Dominique Dufour Keith Tomlins 《Journal of the science of food and agriculture》2010,90(4):622-629
BACKGROUND: Orange‐fleshed sweetpotato (OFSP) can be used to tackle vitamin A deficiency, a major public health problem in most developing countries. In East Africa, common ways of using sweetpotato include drying and subsequent storage. The aim of the study was to investigate the impact of drying and storage on the total carotenoid retention (as an estimate of provitamin A retention) from OFSP. RESULTS: Losses of total carotenoid during drying were generally low (15% or less). Total carotenoid retention in OFSP was not dependent on the type of dryer (solar or sun). Sweetpotato cultivar (Ejumula, Kakamega, SPK004/1, SPK004/1/1, SPK004/6 or SPK004/6/6) had a significant effect on retention in drying (P < 0.05). High percentage losses of total carotenoids were, however, correlated with high moisture content and high carotenoid content in fresh sweetpotato roots. After 4 months' storage at room temperature in Uganda, losses of total carotenoid in dried sweetpotato chips were high (about 70%) and this was not dependent on the use of opaque or transparent packaging. CONCLUSION: Losses of carotenoids during storage were considered to be more of a nutritional constraint to the utilisation of dried sweetpotato than losses occurring during drying. The relationship between characteristics of the cultivars and losses of carotenoids during drying should be taken into account in selection of cultivars for processing. Copyright © 2009 Society of Chemical Industry 相似文献
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Baghouse dust collectors are commonly used in industry for removing solid particles from dust-laden gas. Baghouse filter media need to be periodically cleaned in order to remove collected particles from the filter surface. Pulse-jet cleaning is the most commonly used method but the detachment forces involved always affect downstream particle emission adversely. Although it is possible to find information about the mechanisms and the factors that cause particle emission, no link has been made between the distribution of the dirty airflow via the filter elements and the increase in released downstream particles after the bag cleaning.Innovative instrumentation of a pulse-jet-cleaned pilot dust collector allowed measuring the variation in the individual airflows which pass through each filter bag during clogging and cleaning cycles. The way in which segmented pulse-jet cleaning influences total dirty airflow distribution amongst filter elements was investigated. The consequences on bag airflow resistance and downstream particle emission were studied. Filtration cycles can be related to a succession of segmented pulse-jet cleaning, leading to imbalanced bag airflow resistances, and clogging. This in turn leads to compensations between bag resistances as a function of dust-laden individual bag airflow values. Airflow resistance variations are caused by two complementary phenomena: permeation of high transitory airflows on the first bags cleaned and the re-suspension of detached particles after a pulse-jet cleaning.During a cleaning sequence, strong airflow increases on the first cleaned bags are mainly prejudicial to dust collector downstream particle concentration. 相似文献
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Owen Casha Ivan Grech Joseph Micallef Edward Gatt Dominique Morche 《Analog Integrated Circuits and Signal Processing》2011,68(2):193-205
This paper presents a study on the use of microsystems technology in the design of radio frequency voltage-controlled oscillators.
In particular, the application of a micro-electro-mechanical systems (MEMS) based variable inductor for frequency tuning purposes
is presented. Although traditionally a MEMS variable inductor is considered as a means to extend the tuning range, in this
work it is shown that with correct inductor design it is also possible to facilitate and improve the voltage-controlled oscillator
design in terms of phase noise response and power consumption in comparison to a design based on standard capacitive tuning. 相似文献
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In this communication, we describe the first PEDOT-stabilized TTF-based nanoobjects (PEDOT: poly(3,4-ethylenedioxythiophene)). Two tetrathiafulvalenium–bromide systems, namely TTFBr0.59 and TTFBr, have been processed as nanosticks and well-dispersed nanoparticles in PEDOT, acting as a stabilizing agent. Nanopowders are studied by various techniques including infrared, Raman, X-ray diffraction, transmission electron microscopy, and transport measurements. 相似文献
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