Wizerunek medialny Platformy Obywatelskiej przed wyborami parlamentarnymi w roku 2007 w polskiej prasie codziennej. Retoryczna analiza dyskursu

W artykule prezentuję wyniki analizy dyskursu prasowego „Gazety Wyborczej” i „Rzeczpospolitej” poświęconego wizerunkowi „Platformy Obywatelskiej” w ostatnim tygodniu kampanii wyborczej przed wyborami parlamentarnymi z roku 2007. Przyjmując jako metodę retoryczną analizę dyskursu staram się pokazać jak dwa różne dzienniki opisując te same wydarzenia mogą wpływać na ich interpretację wśród czytelników. W analizie porównane zostały m.in. takie elementy dyskursu jak: język tekstów i nagłówków, elementy stylistyczne, chwyty retoryczne, dobór rozmówców i tematów

Archiwalia izb przemysłowo-handlowych na Ziemiach Odzyskanych

W rozdziale przedstawiona została spuścizna archiwalna dotycząca izb przemysłowo-handlowych na Ziemiach Odzyskanych zgromadzona w archiwach w Olsztynie, Opolu, Szczecinie i Wrocławiu. Prezentowane archiwalia omówiono pod kątem ich zawartości i ewentualnie przydatności do dalszych badań. Najwięcej miejsca poświęcono na opisanie archiwaliów Ekspozytury Izby Przemysłowo-Handlowej w Opolu. Tekst został również wzbogacony w przypisach o biogramy czołowych działaczy związanych z opisywanymi izbami przemysłowo-handlowymi i ich ekspozyturami

Chemically activated poly(furfuryl alcohol)-derived CMK-3 carbon catalysts for the oxidative dehydrogenation of ethylbenzene

The surface of CMK-3 carbon, synthesized by the reversible replication of mesoporous silica (SBA-15) using poly(furfuryl alcohol) as a carbon precursor, was activated by wet oxidation with an aqueous solution of HNO3 or H2O2. The process was performed at 50 °C using solution containing different concentrations of the oxidizing agent. It was found that during the modification no significant changes in textural and structural properties of CMK-3 replica occurred. However, the treatment resulted in the formation of appreciable amounts of surface species containing oxygen. XPS and DRIFT spectroscopy allowed to identify and quantify the surface functional groups. Their stability was studied by TG-FTIR measurements. CO and CO2 were found as main gaseous products evolved during thermal decomposition under inert atmosphere. Finally, the modified samples were tested in the catalytic oxidative dehydrogenation of ethylbenzene to styrene at 350 °C in the presence of oxygen as an oxidizing agent (at O2/ethylbenzene molar ratio of 1.0 and 3.0). At the beginning of the catalytic run, the highest styrene yield and selectivity was achieved at the lower O2 content over the catalysts treated with nitric acid. Nevertheless, all studied catalysts underwent a gradual deactivation due to coke formation and changes in the distribution of surface moieties.This work was supported by the Polish National Science Centre under the grant no. DEC–2011/01/N/ST5/05595. The research was carried out with the equipment purchased thanks to the financial support of the European Regional Development Fund in the framework of the Polish Innovation Economy Operational Program(contract No. POIG.02.01.00-12-023/08)

Fabrication, modeling and integration of a silicon technology force sensor in a piezoelectric micro-manipulator.

International audienceThis work presents the results of the integration of a force sensor fabricated with the silicon technology in a microgripper actuated by a piezoactuator system. The force sensor consists of a silicon box with an output beam. Forces acting of the beam are sensed in the clamping where the stress is maximum. The voltage read out is made by a Wheatstone bridge. Scaling of force sensors has been done using analytical and numerical tools. Piezoresistivity in the silicon sensor permits measurements of forces of several tens of mN with a resolution of 10 μN. Characterisation of sensors in the laboratory has shown the range of deflections obtained for an input force. The former sensor has been later integrated in a piezoelectric micromanipulator. The aim of this integration has been the characterization of the sensor in this new configuration and measurements of handling forces during the manipulation of micro samples in SEM and standard laboratory conditions. Results show that a force range from some mN to some hundreds of mN is measured for a sensing micromanipulator

Zarządzanie instytucjami obywatelskimi i samorządowymi

Niniejszy artykuł przedstawia płaszczyznę badawczą stosowaną w dotychczasowych badaniach nad samorządem gospodarczym wraz ze sformułowaniem postulatów na przyszłość w tym zakresie. W tekście uwzględniono swoistą interdyscyplinarność badań prowadzonych nad samorządem gospodarczym ze stanowiska wielu nauk m.in. prawa, historii, nauk o polityce, nauki ekonomii. Istotnym elementem artykułu jest także próba wskazania, która z metod badawczych jest stosowana najczęściej i czy w związku z tym posiada zalety , jakich nie mają inne z opisanychPiotr Janu

Archiwalia izb przemysłowo–handlowych na Ziemiach Odzyskanych

Piotr Janu

A simplified route to the synthesis of CMK-3 replica based on precipitation polycondensation of furfuryl alcohol in SBA-15 pore system

A novel method of synthesis of mesoporous, polymer-derived CMK-3 carbon replica was proposed. Instead of a multi-stage, time-consuming and toxic solvent involving procedure, the direct, acid-catalyzed precipitation polycondensation of furfuryl alcohol to poly(furfuryl alcohol) (PFA), as the carbon precursor, in the pore system of SBA-15 silica was used. The optimal PFA/SBA-15 mass ratio resulting in the complete pore filling was found. The final carbon material was obtained by carbonization of the formed composite and subsequent removal of silica by treatment with HF. Low-temperature sorption of nitrogen, powder X-ray diffraction and transmission electron microscopy confirmed the formation of well-ordered, hexagonal carbon mesostructure. The produced CMK-3 exhibited the presence of oxygen-containing surface groups, recognized as mainly carbonyl and carboxyl species by X-ray photoelectron spectroscopy and temperature-programmed desorption. The presence ofthese groups caused the mesoporous carbon to be catalytically active in the oxidative dehydrogenation of ethylbenzene to styrene.This work was supported by the National Science Centre under the Grant No. DEC–2011/01/N/ST5/05595. Rafał Janus wishes to thank the Foundation for Polish Science MPD Programme co-financed by the EU European Regional Development Fund for the financial support. The research was carried out with the equipment purchased thanks to the financial support of the European Regional Development Fund in the framework of the Polish Innovation Economy Operational Program (contract No. POIG.02.01.00-12-023/08)

Applying Machine Learning to Study Infrastructure Anomalies in a Mid-size Data Center -- Preliminary Considerations

Today, data centers deal with fast growing data volumes. To deliver services, they deploy growing amount of heterogeneous hardware. As a result, it becomes practically impossible to apply human-based data center management. For instance, in a real-world data center, with 500+ computers, delivering data, computational, and network services, it becomes impossible to visualize, and understand, causal relationships among variables describing performance of monitored resources. However, it is possible to collect data describing behavior of individual nodes. Hence, such data may be used to analyze/model system performance. In particular, it may be applied to recognize and predict anomalies in system behavior. Furthermore, collected data should allow finding the cause(s) of anomalies. Therefore, “data-driven approaches” have been applied to the real-world data, to find, so called, Root Cause of anomalies

Investigation on the Low-Temperature Transformations of Poly(furfuryl alcohol) Deposited on MCM-41

MCM-41-type mesoporous silica was used as a support for poly(furfuryl alcohol) deposition. This material was produced by precipitation–polycondensation of furfuryl alcohol (FA) in aqueous slurry of the SiO2 support followed by controlled partial carbonization. By tuning the FA/MCM-41 mass ratio in the reaction mixture, various amounts of polymer particles were introduced on the inner and outer surface of the MCM support. The thermal decomposition of the PFA/MCM-41 composites was studied by thermogravimetry (TG) and spectroscopic techniques (DRIFT, XPS), whereas the evolution of textural parameters with increasing polymer content was investigated using low-temperature adsorption of nitrogen. The mechanism of thermal transformations of PFA deposited on the MCM-41 surface was discussed in detail. It was found that heating at a temperature of about 523 K resulted in opening of the furan rings and the formation of γ-diketone moieties, which were found to be the highest effective surface species for the adsorption of polar volatile organic compounds. A further increase in calcination temperature caused a drop in the amounts of surface carbonyls and the appearance of condensed aromatic domains.This work was supported by the Polish Ministry of Science and Higher Education under Grant N N507 553238. Rafał Janus thanks the Foundation for Polish Science MPD Programme cofinanced by the EU European Regional Development Fund for the financial support. The research was carried out with equipment purchased thanks to financial help from the European Regional Development Fund within the framework of the Polish Innovation Economy Operational Program (Contract POIG.02.01.00-12-023/08)