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1 – 3 of 3Edward Miś, Andrzej Dziedzic and Karol Nitsch
A capacitor is a basic electronic passive component. Thick‐film technology allows manufacturing of capacitors covering the range of small and medium capacitances and they have…
Abstract
Purpose
A capacitor is a basic electronic passive component. Thick‐film technology allows manufacturing of capacitors covering the range of small and medium capacitances and they have been investigated in depth already. Low temperature co‐fired ceramics (LTCC) technology makes it possible to fabricate buried capacitors, which leads to increased packaging density, but such components’ properties are not well known. The purpose of this paper is to present the results of investigations on thick‐film and LTCC capacitors made in various technological variants.
Design/methodology/approach
Thick‐film and LTCC capacitors were made in various technological variants. Different capacitor inks, metallurgy of electrodes and component constructions were investigated. Basic electrical properties and stability were determined. An electrical equivalent circuit of such components was developed based on frequency and temperature characteristics.
Findings
Simple electrical equivalent circuits of self‐made thick‐film and LTCC micro‐capacitors were developed based on measurements in frequency and temperature domain. Good fitting accuracy was obtained. The bulk material section of model is predominant in the low‐frequency range. Interface region and serial resistance influence are revealed at higher frequency, affecting mainly dissipation factor value. Also, temperature and thermal ageing have affected strongly on that part of the model.
Originality/value
The paper usefully examines the electrical properties and electrical equivalent models of thick‐film and LTCC micro‐capacitors.
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Reinhard Bauer, Leszek J. Golonka, Torsten Kirchner, Karol Nitsch and Heiko Thust
Thermal properties of Pt or RuO2 thick‐film heaters made on alumina, aluminum nitride or low temperature co‐fired ceramics (LTCC) were compared in the first step of our work…
Abstract
Thermal properties of Pt or RuO2 thick‐film heaters made on alumina, aluminum nitride or low temperature co‐fired ceramics (LTCC) were compared in the first step of our work. Special holes to improve the heat distribution were included. Several heater layouts were analysed. The heat distribution was measured by an infrared camera, at different heating power. Second, the optimization of LTCC constructions was carried out. The simple structure of LTCC permitted the achievement of a high package density. It was possible to integrate a heating element made from special thick‐film ink as a buried film, inside a substrate. An important step in our technology was the making of the holes. A pattern of holes (achieved by punching or laser cutting) around the heating area permitted a changeable heat gradient. The quality of lamination and the structure of the buried elements were investigated with an ultrasonic microscope.
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John Paul II's views on economic systems have been construed differently by some commentators who have been seeking approval for their own views rather than searching for the…
Abstract
Purpose
John Paul II's views on economic systems have been construed differently by some commentators who have been seeking approval for their own views rather than searching for the meaning that he himself intends to convey. John Paul is labeled by many as favoring capitalism, and by others as supporting socialism. A few have been scrutinizing his statements in hopes of finding support for a “third‐way.” In this paper, John Paul is quoted at length to represent his views more accurately.
Design/methodology/approach
This paper originated in a collection of essays on the theme of John Paul II's vision of the social economy that was published by the International Journal of Social Economics in fall 1998. This author is indebted to the contributors to that collection for many insights into John Paul's vision. Eight topics are covered: consumption, distribution, capital investment, work as such, leisure, labor, development, and market economy versus command economy. This paper uses many more direct quotes than is customary in scholarly work, but there is no other way to proceed and remain faithful to John Paul's vision of the social economy.
Findings
John Paul's writings on economic affairs are significant for what they teach about the premises employed in economics. His own philosophy of the human person reinforces the four premises of personalist economics more so than the premises of the mainstream and challenges the mainstream at its foundations in the philosophy of individualism.
Research limitations/implications
John Paul speaks to a wide range of issues and questions central to economics and economic affairs. It would be presumptuous to represent this paper as a thorough examination of everything that John Paul has said, written, and means in this regard.
Practical implications
This paper attempts to highlight some of the key arguments that John Paul II has set forth on eight centrally important economic topics, comparing and contrasting his pronouncements with the views of mainstream economists on the same topics.
Originality/value
This paper draws on the insights of 20 professional colleagues specialized in range of subdisciplines in economics, holding faculty positions at major universities in the USA, Italy, and Canada, and with a strong interest in understanding the social economy. The concluding section states John Paul's vision of the social economy in terms of 13 most important arguments.
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