Search results for "version"
showing 10 items of 1591 documents
Logistyka a zarządzanie cyklem kapitału pracującego – rozwiązania stosowane w skali przedsiębiorstwa (Logistics vs. working capital cycle management …
2016
Logistyka, jako koncepcja zarządzania strukturą przepływów towarów i związanych z nimi informacji w przedsiębiorstwie i w łańcuchu dostaw, może w istotny sposób wspomóc optymalizację struktury i poziomu kapitału pracującego. Jego obrazem jest wskaźnik cyklu konwersji gotówki V.D. Richardsa i E.J. Laughlina, a spośród jego składowych logistyka bezpośrednio wpływa na długość cyklu zapasów (F2F), obok cyklu należności (02C) oraz zobowiązań (P2P). Głównymi instrumentami stosowanymi w przedsiębiorstwie w celu skrócenia cyklu F2F są Lean Manufacturing i Just in Time, zorientowane na ujawnianie i redukcję marnotrawstwa w przedsiębiorstwie, czego skutkiem jest zmniejszenie poziomu zapasów. W efekci…
Boosting the performance of a Reverse Electrodialysis – Multi-Effect Distillation Heat Engine by novel solutions and operating conditions
2019
Abstract This work presents a performance analysis of a waste-heat-to-power Reverse Electrodialysis Heat Engine (RED-HE) with a Multi-Effect Distillation (MED) unit as the regeneration stage. The performance of the system is comparatively evaluated using two different salts, sodium chloride and potassium acetate, and investigating the impact of different working solutions concentration and temperature in the RED unit. For both salt solutions, the impact of membrane properties on the system efficiency is analysed by considering reference ionic exchange membranes and high-performing membranes. Detailed mathematical models for the RED and MED units have been used to predict the thermal efficie…
The Role of Agency Theory and Perceived Goal Divergence in IS Continuance: A Replication and Extension Study
2016
Past literature recognizes the power of the well-established information systems continuance theory (ISCT) to explain information systems (IS) continuance. In this study, we integrate constructs from two additional perspectives and discuss their interdependencies with ISCT. We argue that the promising framework proposed by Sorebo et al. [1], which extends ISCT with self-determination theory (SDT), can increase its managerial relevance by adding the variables of users' perceptions of goal divergence and risk aversion, selected from agency theory. The empirical results support Sorebo et al.'s main findings and strongly support the impact of perceived goal divergence on e-learning continuance …
Characterization of PP-cLT Waveguides for Second-Harmonic-Generation and Wavelength-Conversion in the C + L Band of Optical Communications
2010
We report the characterization of single-mode optical waveguides at telecom wavelength, realized in congruent lithium-tantalate. We demonstrate that waveguides realized by proton-exchange show a nonlinear coefficient matching that expected in a bulk crystal.
Personality and Labour Market Income: Evidence from Longitudinal Data
2010
This study contributes to the literature on how personality is rewarded in the labour market by examining the relationship between personality and labour market income. Our results suggest that adulthood extraversion is positively associated with income when education, work experience, and unemployment history, measured prospectively from longitudinal data, are controlled for. In addition, childhood constructiveness indicating active and well-controlled behaviour has a positive association with income in adulthood.
Influence of the Fermented Feed and Vaccination and Their Interaction on Parameters of Large White/Norwegian Landrace Piglets
2020
The aim of this study was to evaluate the influence of fermented with a newly isolated lactic acid bacteria (LAB) strains combination (Lactobacillus plantarum LUHS122, Lactobacillus casei LUHS210, Lactobacillus farraginis LUHS206, Pediococcus acidilactici LUHS29, Lactobacillus plantarum LUHS135 and Lactobacillus uvarum LUHS245) feed on non-vaccinated (NV) and vaccinated with Circovac porcine circovirus type 2 vaccine (QI09AA07, CEVA-PHYLAXIA Co. Ltd. Szá
A physical model for interpreting the land surface temperature obtained by remote sensors over incomplete canopies
1992
Abstract At the present moment, land surface temperature cannot be obtained in a routine way from satellite data due, in part, to the nonexistence of a complete theoretical model that permits us to know the physical significance of land surface temperature obtained by remote sensors. In this article a relationship between the effective temperature of the radiative system vegetation-ground and the temperatures of each part of the system (top, sunny and shaded wall of vegetation, and sunny and shaded soil) has been derived. It depends on the proportions of each component observed by the sensor, on the ground and vegetation emissivities, and on the crop structure (mean height, width, and spaci…
Polysulfonate Cappings on Upconversion Nanoparticles Prevent Their Disintegration in Water and Provide Superior Stability in a Highly Acidic Medium
2018
The stability of organic cappings on hexagonal NaYF4:Ln3+ upconversion nanoparticles (UCNPs) is crucial for their luminescence efficiency in aqueous solutions. The capping removal quickens as the acidity of the medium increases. We demonstrate here that polysulfonates, namely poly(2-acrylamido-2-methyl-1-propanesulfonate) (PAMPS) and poly(sodium 4-styrene sulfonate) (PSS), remain anchored to the surface of NaYF4:Yb3+,Er3+/Tm3 UCNPs even at a pH as low as 2 due to strong acidity of the sulfonate anchoring groups (pKa of ca. −3). Bare UCNPs progressively disintegrate into their compositional F–, Na+, Y3+, and Ln3+ ions. Their disintegration is particularly worrying in highly diluted dispersio…
Multicolor upconversion luminescence of GdVO4:Ln3+/Yb3+ (Ln3+ = Ho3+, Er3+, Tm3+, Ho3+/Er3+/Tm3+) nanorods
2016
Lanthanide-doped GdVO4 nanorods that exhibit upconversion emission under 982 nm excitation have been prepared by a facile room-temperature chemical co-precipitation method followed by a subsequent annealing at temperatures of 600 degrees C, 800 degrees C and 1000 degrees C. Multicolor upconversion emission, including white, was achieved by tuning the concentrations of dopant lanthanide ions (Ho3+, Er3+, Tm3+ and Yb3+) in GdVO4. It is found that four GdVO4 samples emit light with the white chromaticity coordinates of (0.326, 0.339), (0.346, 0.343), (0.323, 0327) and (0.342, 0.340) respectively, under a single-wavelength NIR excitation. These coordinates are very close to the standard equal e…
Lanthanide-doped Y3Ga5O12 garnets for nanoheating and nanothermometry in the first biological window
2018
Abstract Absorption and luminescence spectra in the first biological window of Nd3+ single-doped and Er3+-Yb3+ co-doped Y3Ga5O12 nano-garnets have been studied to evaluate their potential use as simultaneous optical nanoheaters and nanothermometers in biomedicine. Nd3+-doped nano-garnets uses the 808 nm laser radiation, resonant with the largest absorption peak of the 4I9/2 → 4F5/2 transition, for both heating the nanoparticle and populating the 4F3/2 emitting level. Changes in the relative intensities of different emission peaks between Stark levels of the 4F3/2 (R1,2)→4I9/2 (Z1-5) transition can be directly related to the temperature of the nano-garnet. On the other hand, the Yb3+/Er3+com…