Wybrane aspekty zarządzania organizacjami

Ze wstępu: "Prezentowane artykuły są wynikiem badań prowadzonych w Katedrze Zarządzania i Edukacji Prakseołogicznej Krakowskiej Szkoły Wyższej im. Andrzeja Frycza Modrzewskiego. Autorami są pracownicy Katedry oraz doktoranci i habilitanci, realizujący swe rozprawy na Uniwersytecie Jagiellońskim, Uniwersytecie Warszawskim oraz na Akademii Ekonomicznej w Krakowie. Po wejściu Polski do struktur Unii Europejskiej polskie firmy muszą sprostać licznym wyzwaniom i pokonać wiele barier, by nadrobić wciąż znaczący dystans, jaki dzieli nas od krajów byłej „piętnastki”. Strategia integracji jest określona z jednej strony przez diagnozę stanu polskiej gospodarki, a z drugiej przez obraz gospodarki Unii Europejskiej. Podstawowymi problemami wymagającymi pilnego rozwiązania, a determinującymi rozwój polskich firm są obecnie: strategia ich działania, wzrost jakości i konkurencyjności produktów i usług, znacząca poprawa wyników ekonomicznych. Sukcesywne rozwiązywanie tych i innych wyzwań wymaga wiedzy, umiejętności, a także innowacyjności, kreatywności i współdziałania wszystkich członków organizacji. Duże znaczenie w tym trudnym procesie zarządzania organizacjami ma motywacja pracowników, których zadowolenie z pracy powinno wiązać się ze wzrostem efektywności ich działania."(...

Investigation of transmission properties of a tapered optical fibre with gold nanoparticles liquid crystal composite cladding

The article presents a study of a hybrid structure based on the combination of a tapered optical fibre and gold nanoparticles dispersed in a liquid crystal material. Sensitivity to changes of the refractive index of the environment in which the structure is located, as well as the possibility of changing the refractive index of liquid crystals by external factors, such as temperature and electric field, were investigated. Electro- and thermally-induced changes of the refractive index of a liquid crystal through the rotation of a molecule director, which cause changes in the light propagated in a tapered optical fibre, were described. The most important issue in the article is to determine the influence of doping a liquid crystal with gold nanoparticles the concentration of which varies between 0.1 and 0.3 wt.%. The paper presents transmission measurements in a wide optical range depending on voltage, temperature, and frequency changes. Additionally, time courses of the obtained signal were measured. The study shows that the appropriate selection of nanoparticle concentration has a huge impact on the optical wave propagation. The experimental results show that the optical changes obtained for the investigated hybrid structure prefer it for use as an electrooptical switcher, filter, or sensor

In-Line Gas Sensor Based on the Optical Fiber Taper Technology with a Graphene Oxide Layer

This article investigates the possibilities of gas detection using a tapered optical fiber coated with a graphene oxide layer. Measurement is based on changes in light beam propagation depending on the process of gas absorption to the graphene oxide layer. In this paper, we investigated the light change in a double-clad tapered optical fiber in a wide optical range. We present a special platform constructed for the deposition of additional functional materials that enable the preparation of the sensor module. Our results present differences in light transmission for three different kinds of gasses pure nitrogen, pure hydrogen, and a mixture of propane–butane. Measurements were provided in a wide range of 500 nm–1800 nm to find the most sensitive ages for which we are able to detect mentioned absorption and their interaction with light. Obtained results for pure gasses for which the refractive indices are similar to the air show the greatest changes for the visible range 750 nm–850 nm, and for propane–butane, changes are much visible in the whole investigated range

Optical Properties of a Tapered Optical Fiber Coated with Alkanes Doped with Fe₃O₄ Nanoparticles

The presented research shows the possibilities of creating in-line magnetic sensors based on the detection of changes of light propagation parameters, especially polarization, obtained by mixing Fe3O4 nanoparticles with hexadecane (higher alkane) surrounding a biconical optical fiber taper. The fiber optic taper allows to directly influence light parameters inside the taper without the necessity to lead the beam out of the structure. The mixture of hexadecane and Fe3O4 nanoparticles forms a special cladding surrounding a fiber taper which can be controlled by external factors such as the magnetic field. Described studies show changes of transmission (power, loss) and polarization properties like azimuth, and ellipticity, depending on the location of the mixture on sections of tapered optical fiber. The taper was made of a standard single-mode telecommunication fiber, stretched out to a length of 20.0 ± 0.5 mm and the diameter of the tapers is around 15.0 ± 0.3 μm, with the loss lower than 0.5 dB @ 1550 nm. Such a taper causes the beam to leak out of the waist structure and allows the addition of the external beam-controlling cladding material. The presented research can be used to build polarization switches or optical sensor. The results show that it can be a new way to control the propagation parameters of a light beam using tapered optical fiber and magnetic mixture