On nesting nonhomothetic preferences

We consider nested utility function with nonhomothetic subutility functions. We express demand functions for aggregate goods in terms of marshalian and hicksian demands associated with the standard consumer problem of maximization of aggregate utility function. We also presents a simple method of calibrating such a demand system.demand systems; nonhomothetic preferences

W cieniu Giedroycia. Dyskusje o polskiej polityce wschodniej po 1989 roku

Publikacja finansowana w ramach programu Ministra Nauki i Szkolnictwa Wyższego pod nazwą „Dialog” w latach 2018–2020 na potrzeby projektu Centrum Europejskiego Natolin Elektroniczna platforma transferu wiedzy i zasobów źródłowych. Wizje roli Polski w Europie Środkowo-Wschodniej w koncepcjach geopolitycznych, gospodarczych i cywilizacyjno-kulturowych w XX w

On nesting nonhomothetic preferences

We consider nested utility function with nonhomothetic subutility functions. We express demand functions for aggregate goods in terms of marshalian and hicksian demands associated with the standard consumer problem of maximization of aggregate utility function. We also presents a simple method of calibrating such a demand system

Toward a unified model of mobile Business Intelligence (m-BI) acceptance and use

Factors affecting mobile business intelligence (m-BI) acceptance and use have become an increasingly important topic in practice due to the growing complexity of organizations, and their underlying information systems (IS). Since, one can notice considerable interest in m-BI, however, to the best of our knowledge few studies (if any) aim to synthesize the existing body of knowledge with regards to the factors affecting m-BI acceptance and use. To fill this gap, we conducted a systematic literature review and summarized the current state of the art. By addressing research questions, we identified a set of five factors, namely: Perceived Value, Perceived Ease of Use, Managerial Attitudes, Facilitating Conditions and Quality of Information, and specified their inter-relationships. Moreover, we introduce an acceptance model (m-BIAM) on behavioral intention and use mobile Business Intelligence solutions. The contribution of this study lies in these evidence-based findings, which lay a solid foundation for further studies in the extent of testing and evaluating the m-BIAM model, targeted at delivering more evidence to confirm its validity and predictive power

Histone deacetylases affect transcriptional regulation of CCL2 and CXCL8 expression by pulmonary fibroblasts in vitro

Introduction: Chemokines have been shown to play an important role in tissue remodeling and fibrosis in the respiratory system. In this study we wanted to evaluate the mechanisms, which regulate the expression of selected chemokines by pulmonary fibroblasts in vitro. Material and methods: Pulmonary fibroblasts were cultured with and without bacterial lipopolysaccharide (LPS) for 6 hours. In addition some of the cultures were pre-treated with histone deacetylase inhibitor Trichostatin A (TSA). Real-time PCR reaction was performed to estimate the expression of chemokines CCL2, CCL3 and CXCL8. Results: In unstimulated cultures detectable expression of CCL2 and CXCL8 was observed, while CCL3 expression could not be detected. After stimulation with LPS, TSA and both agents together CCL2 expression rose by 1.52, 1.62 and 1.8 times in comparison to control cultures respectively. CXCL8 mRNA expression levels after stimulation with LPS, TSA and LPSTSA increased by 1.53, 1.91 and 2.4 times accordingly. Conclusion: Epigenetic mechanisms related to histone acetylation affects transcriptional regulation of CCL2 and CXCL8 expression by pulmonary fibroblasts. Those mechanisms may play a role in tissue repair and pathologic remodeling

Organizational Ethics, Position and Their Relationship to Gender, Before and During Pandemic

This research investigates the levels of organizational ethics (OETH) among knowledge workers (KW), using their work information and communication technologies (ICT) with their executive position (supervisor/subordinate), in regional enterprises in Poland before and during the COVID19 pandemic. We analyzed levels of OETH and its three dimensions as organizational optimism (ETO), corporate social responsibility (CSR), top management action (TMA). We conducted our study twice, using an online survey among 137 KW before and 127 KW during a pandemic, combining random and snowball sampling to select data. We used multivariate statistical methods such as analysis of variance and causal moderation analysis to estimate the indirect effect of gender, the effect of the pandemic, as well as their interaction in the relation between position and OETH and its subscales.. Our findings show superiors manifested higher levels of OETH assessment than their subordinates, especially before the pandemic. Both groups displayed a pessimistic and low level of OETH, especially ETO, before the pandemic, and on the contrary, increased significantly to an average level during the pandemic. Gender and the pandemic affected the levels of OETH and occurred to be moderators of the considered relationship

Zatorska goose - a subject of parasitological research

The aim of the study was to determine the level of gastrointestinal parasites in a native breed of geese – Zatorska goose – based on coproscopic testing. Faecal samples were collected from 90 young geese in three age groups (5, 7 and 9 weeks old) in 2014. The geese were kept indoors on deep litter and pastured from spring to autumn. The area of the pastures around the buildings where the geese grazed was about 1 hectare, divided into quarters for different age groups. Before grazing, the birds were dewormed with fenbendazole (Fenbenat powder 4%, Naturan). As additional treatment for coccidiosis, coccidiostats were added to the feed. The study was conducted using the McMaster quantitative method with centrifugation (flotation liquid: NaCl and glucose). The birds were shown to be infected with coccidia and nematodes. The prevalence of Eimeria sp. infection (mean 40%) and the number of oocysts per gram of faeces (reaching 5,300 OPG) were highest in the youngest age group of geese. The level of Amidostomum anseris infection was similar in the three age groups, with prevalence from 40% to 50% (nematode egg output ranged from 50 to 350 eggs per gram of faeces, EPG). Capillaria anatis was observed only in 5- and 7-week-old geese

The Alice : "Follow the White Rabbit" : parasites of farm rabbits based on coproscopy

The aim of the study, conducted in the years 2011–2013, was to determine the level of gastrointestinal parasites infection in New Zealand White rabbits, kept at the Experimental Station of the University of Agriculture in Krakow. The study showed rabbits protozoan infection with the genus Eimeria, belonging – based on the sporulation method – to the following species: E. magna, E. media, E. perforans, E. stiedae and E. irresidua. The highest prevalence of infection, as well as the intensity of oocysts output (OPG – oocysts per gram of faeces), was noted for E. magna and E. media – respectively 31.4 % (19477.3 OPG), and 40.0 % (14256.07 OPG). The infection of rabbits with Eimeria spp. differed significantly between years. With regard to oocysts output, the level of infection was strongly connected with the age of rabbits, being higher in young animals. However, the range of infection was highest among adults. Among nematodes, Passalurus ambiguus pinworm was regularly found (prevalence reached 21.9%), other species – Trichuris leporis, and Graphidium strigosum were rarely noted. The overall infection with nematodes did not differ between years. Similarly, as in the case of Eimeria older individuals were more often infected by nematodes. We observed some trends in parasite oocysts/eggs output; the protozoan oocysts were recorded more often in faecal samples collected in the evenings, whereas the nematodes eggs occurred frequently in the mornings. This situation may be related to the phenomenon of coprophagy occurring in the mammals of Lagomorpha order. The results of the study indicate that especially coccidiosis constitute permanently throughout the years an important problem in the rabbitry examined

X-ray diffraction, Mossbauer spectroscopy, and magnetoelectric effect studies of (BiFeO3)x-(BaTiO3)1-x solid solutions

In this work the hyperfine interactions in (BiFeO3)x-(BaTiO3)1–x solid solutions with relation to their structural properties have been investigated. X-ray diffraction, Mössbauer spectroscopy and magnetoelectric effect measurements have been used for studies of sintered (BiFeO3)x-(BaTiO3)1–x solid solutions with x = 0.9, 0.8 and 0.7. With increasing contents of BaTiO3, the structural transformation from rhombohedral to cubic was observed. The weakening of the hyperfine magnetic fields accompanied by this transformation. On the other hand, the increasing amount of BaTiO3 caused an increase of the magnetoelectric effect

3D PET image reconstruction based on Maximum Likelihood Estimation Method (MLEM) algorithm

Positron emission tomographs (PET) do not measure an image directly. Instead, they measure at the boundary of the field-of-view (FOV) of PET tomograph a sinogram that consists of measurements of the sums of all the counts along the lines connecting two detectors. As there is a multitude of detectors build-in typical PET tomograph structure, there are many possible detector pairs that pertain to the measurement. The problem is how to turn this measurement into an image (this is called imaging). Decisive improvement in PET image quality was reached with the introduction of iterative reconstruction techniques. This stage was reached already twenty years ago (with the advent of new powerful computing processors). However, three dimensional (3D) imaging remains still a challenge. The purpose of the image reconstruction algorithm is to process this imperfect count data for a large number (many millions) of lines-of-responce (LOR) and millions of detected photons to produce an image showing the distribution of the labeled molecules in space.Comment: 10 pages, 7 figure