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showing 10 items of 9311 documents
Approach to the Design of Transmission-Type Injection-Locked Microwave Oscillators through Behavioral Block Modeling
2010
In this work, an attempt is made toward the development of a systematic design method for the performance- driven dimensioning of the various elements comprising the structure of modern transistor-based microwave injection- locked oscillators with transmission-type topologies (TILOs). The proposed approach is based on the use of appropriate diakoptics of the various circuit blocks into a matched environment, and their behavioral modeling in the fundamental- frequency dynamical complex envelope domain with the help of standard circuit and E.M. simulation CAD tools. This will permit, in the end, to obtain closed-form expressions for the main TILO performances in terms of the design parameters…
Intellectual property strategies and firm growth : evidence from Finnish small business data
2012
The goal of this study is to shed light on the relationship between intellectual property (IP) strategies and firm growth. In brief, IP strategies are means of capturing returns on innovation investments. Employment effects and sales growth effects of innovations have been studied extensively in both theoretical and empirical economic literature but prior research has seldom included IP strategies into the analysis. There is little knowledge, whether there exists growth rate differences among firms that use different IP strategies and do patenting firms effectively demonstrate stronger growth than their non-patenting counterparts. Present study considers IP strategies as potential firm grow…
Influence of the Cultural Background at Small and Medium Sized-Enterprises Innovations in Regional Dimension
2017
Research background: SME’s play crucial role in economy’s development. In EU they make up 99% of all enterprises and are at the forefront of technological innovations (Kotler et al., 1999, pp. 139-140; EC 2013, p. 2; Jasińska-Biliczak, 2016, p. 30). Being the flywheel for economies (Soininen et. al., 2012, p. 614) are called “hidden champions” of 20th century. Over past few years Europe-wide anal-yses (Griffin, 2004, p. 424) have emphasised the importance of investing in SME’s. Taking into consideration that cultural environment is the background to decisions: social, managerial, development (Hofstede et al., 2011, p. 46), so inno-vations, knowledge, skills and competences as well as cultur…
La relazione tra imprenditorialità, innovazione e crescita economica: un confronto tra le macroregioni italiane
2016
The Relationship between Entrepreneurship, Innovation and Economic Growth: a Comparison between Italian Macro-Regions. This work is part of the scientific debate on the relationship between innovation and economic growth. In this paper the study of this quite complex and bidirectional relationship has been enhanced by a third factor that is entrepreneurship as a driving force for the development of local economies. Entrepreneurship can play a key role, especially for the regions of Southern Italy marked by significant delays in development than the regions of Central/North. The paper try to launch a reflection on the role of the University in the creation of entrepreneurship through two spe…
Tożsamość jednostki wobec innowacji cyfrowych i globalnego postępu technologicznego
2017
Rewolucja, obejmująca inteligentne technologie, cyfrowe innowacje oraz zaawansowany postęp technologiczny wkracza we wszystkie sfery ludzkiego życia, a szybko rozwijająca się tzw. rozszerzona rzeczywistość,poprawiająca istniejącą rzeczywistość na lepiej przyswajalną, ewoluuje się z dnia na dzień.Tworzą się nowe typy interakcji między jednostką a społeczeństwem, radykalnie zmieniają się formy wzajemnego komunikowania się jednostek. Mogą one prowadzić do utraty części podmiotowości i sprawności intelektualnej. W prezentowanej pracy przedstawiono niektóre teoretyczne i praktyczne aspekty wpływu tych zjawisk na tożsamość jednostki oraz podkreślono konieczność uzyskania nowych kompetencji komuni…
Determination of selenium, zinc and cadmium in antidandruff shampoos by atomic spectrometry after microwave assisted sample digestion
2000
Microwave assisted pre-treatments for atomic spectrometric determination (inductive coupled plasma-optical emission spectrometry, ICP-OES or flame atomic absorption spectrometry, FAAS) of metallic elements, usually present in antidandruff shampoos, are proposed. They are based on the digestion of the sample with HNO(3) into a closed reactor, which is irradiated at 800 W for a few minutes. Selenium was determined by ICP-OES. The limit of detection was 0.11 mg l(-1); the relative standard deviation (R.S.D.) for the selenium content in the samples was in the 0.6-3.6% range. The results obtained were in agreement with the label contents and the recovery of the proposed method was in the 100-106…
Design of PNIPAAM covalently grafted on halloysite nanotubes as a support for metal-based catalysts
2016
A thermo-responsive polymer such as poly(N-isopropylacrylamide) (PNIPAAM) was covalently grafted on the external surface of halloysite nanotubes (HNTs) by means of microwave irradiation. This nanomaterial was used as a support and stabilizer for palladium nanoparticles. The obtained HNT–PNIPAAM/PdNPs was characterized by means of TGA, SEM, EDS and TEM analyses. The palladium content of the catalyst was estimated to be 0.4 wt%. The stability of the catalytic material at different temperatures (below and above the PNIPAAM lower critical solution temperature) was tested in the Suzuki reaction under microwave irradiation. In addition, TEM analysis after five consecutive runs was performed. The …
Measurements on the temperature dependence of the cationic polymerization of styrene in CH2Cl2 with CF3SO3H as catalyst
1979
The cationic polymerization of styrene in CH2Cl2 with CF3SO3H as catalyst and at low monomer concentrations shows, at −15°C, −45°C and −60°C, the same formal dependence on monomer concentration. The dependence on the catalyst concentration is approximately but not exactly of a third order.
Heterogeneous borrowing hydrogen reactions with Pd/C and ZnO: Diol scope
2017
Abstract A borrowing hydrogen reaction with different diols was employed for the preparation of complex beta- gamma- or epsilon-amino alcohols from p-toluidine and tetrahydroquinoline with the aim of better understanding the applicability of the Pd/C ZnO heterogeneous catalyst.
The measurement of impurities in silicon for solar cell production
2012
The power conversion efficiency of solar cells is largely dependent on impurity levels in silicon. In the current investigations two sample preparation methods of silicon had been used before analysis - acid dissolution at atmospheric pressure and pressured microwave assisted technique. Quantification of impurities in solar silicon was done by inductively coupled plasma mass spectrometry and electrothermal atomic spectrometry. Microwave assisted dissolution of solar silicon was more effective compared to the traditional dissolution method on the hot plate, but complete dissolution of impurities and silicon matrix was achieved with a nitric and hydrofluoric acid mixture. The mass of solar si…