26 research outputs found

    Ignoring and erasing: collective housing in 20th century Czechoslovakia

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    A concept of a collective house that would include apartments and a wide array of communal facilities was a topic of intensive debate in Czechoslovakia throughout the 20th century. This topic was popular not only among architects, but most importantly among feminists, social activists, sociologists, politicians or businessmen. Debaters projected onto these houses their ideas of a future political and social system of Czechoslovakia. For some, shared living was a way to facilitate the arrival of communism, for others it represented a means to develop liberal capitalism. This article presents the political framework behind the idea of collective housing in Czechoslovakia

    Mapping Succession in Non-Forest Habitats by Means of Remote Sensing: Is the Data Acquisition Time Critical for Species Discrimination?

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    The process of secondary succession is one of themost significant threats to non-forest (natural and semi-natural open) Natura 2000 habitats in Poland; shrub and tree encroachment taking place on abandoned, low productive agricultural areas, historically used as pastures or meadows, leads to changes to the composition of species and biodiversity loss, and results in landscape transformations. There is a perceived need to create amethodology for themonitoring of vegetation succession by airborne remote sensing, both from quantitative (area, volume) and qualitative (plant species) perspectives. This is likely to become a very important issue for the effective protection of natural and semi-natural habitats and to advance conservation planning. A key variable to be established when implementing a qualitative approach is the remote sensing data acquisition date, which determines the developmental stage of trees and shrubs forming the succession process. It is essential to choose the optimal date on which the spectral and geometrical characteristics of the species are as different from each other as possible. As part of the research presented here, we compare classifications based on remote sensing data acquired during three different parts of the growing season (spring, summer and autumn) for five study areas. The remote sensing data used include high-resolution hyperspectral imagery and LiDAR (Light Detection and Ranging) data acquired simultaneously from a common aerial platform. Classifications are done using the random forest algorithm, and the set of features to be classified is determined by a recursive feature elimination procedure. The results show that the time of remote sensing data acquisition influences the possibility of differentiating succession species. This was demonstrated by significant differences in the spatial extent of species, which ranged from 33.2% to 56.2% when comparing pairs of maps, and differences in classification accuracies, which when expressed in values of Cohen’s Kappa reached ~0.2. For most of the analysed species, the spring and autumn dates turned out to be slightly more favourable than the summer one. However, the final recommendation for the data acquisition time should take into consideration th

    Intrauterine deaths — an unsolved problem in Polish perinatology

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    Objectives: The Polish criteria for “intrauterine death” include fetal demise after 22 weeks of gestation, weighing > 500 g and body length at least 25 cm, when the gestational age is unknown. The rate of fetal death in Poland in 2015 is 3:10,000. In 2020, 1,231 stillbirths were registered. Material and methods: An analysis using 142,662 births in the period between 2015–2020 in 11 living in Poland. The first subgroup was admitted as patients > 22 to the beginning of the 30th week of pregnancy (n = 229), and the second from the 30th week of pregnancy inclusively (n = 179). In the case of women from both subgroups, there was a risk of preterm delivery close to hospitalization. Results: It was found that stillbirth in 41% of women in the first pregnancy. For the patient, stillbirth was also the first in his life. The average stillbirth weight was 1487 g, the average body length was 40 cm. Among fetuses up to 30 weeks, male fetuses are born more often, in subgroup II, the sex of the child was usually female. Most fetal deaths occur in mothers < 15 and > 45 years of age. Conclusions: According to the Polish results of the origin of full-term fetuses > 30 weeks of gestation for death in the concomitant antenatal, such as placental-umbilical and fetal hypoxia, acute intrapartum effects rarely, and moreover < 30 Hbd fetal growth restriction (FGR), occurring placental-umbilical, acute intrapartum often

    Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

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    A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements

    Measurement of jet fragmentation in Pb+Pb and pppp collisions at sNN=2.76\sqrt{{s_\mathrm{NN}}} = 2.76 TeV with the ATLAS detector at the LHC

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    K prehistorii českých kolektivních domů

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    Collective homes and housing collectivization are phenomena that are usually considered to be ideologically close to Marxism and anarchism. In the 19th century, however, socialization of domestic work was part of various ideological streams, from social democrats to the business establishment. At the beginning of the 20th century, various forms of collective housing garnered the attention of the Czech intellectual elite. Information about collective housing came either directly from the United States of America or from Germany and Scandinavia. Czech sociologists regarded it as a contribution to social solidarity; feminists, on the contrary, as an instrument for the reinforcement of the family. The concept of homes with central kitchens came to Bohemia not only as part of a political and economic discourse but also in utopian novels and as part of architectural debates. Czech architecture and literature were, however, reserved about collective housing. The first larger reflection on central kitchens did not appear in Czech architecture until the beginning of the 1920s, on the margins of debates about the garden city. Among feminists, in contrast, we can see an uninterrupted interest in the socialization of domestic work during the entire first four decades of the 20th century. And it was feminists who managed to give the theoretical deliberations a real, albeit very constrained architectural form

    Architecture and feminism in Czechoslovakia in the first half of the 20th century

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    This thesis examines the relationship between architecture and feminism in the first half of the 20th century in Czechoslovakia. It opens by defining the dynamics of Czechoslovak feminism and architecture with regard to the theory of social movements. This text primarily focuses on the program, objectives and the modus operandi of the liberal branch of feminism, represented mainly by the non-partisan organization Ženská národní rada (Women's National Council). Members of this Council believed they could actively participate in shaping of the government policy on the social standing of women and maintained a close relationship of their organization to the state polity. We view this belief and this relationship as a model valid for a wide range of other women's organizations in that period. We consider these links the most important factor in determining the feminist organizations' relation to the movement of modern architecture.We follow the interaction of architecture and feminism in three chapters. The common denominator is the position of these two movements to modernization processes that were taking place in the nation state, in particular to the advent of the theories of scientific management. This main topic also determines the time frame of the text, beginning with formulating of social ethos in the..

    Trendy rozwoju zapotrzebowania na deficytowe surowce mineralne, kluczowe dla polskiej gospodarki

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    The observation of trends in the demand for minerals is of fundamental importance in the long-term assessment of prospects for economic development in Poland. From among 148 minerals analyzed, 42 minerals are indicated as key minerals for the country’s economy, of which 22 were recognized as deficit minerals. These minerals have been the subject of this paper. For each of these minerals the forecasts of demand by the years 2030, 2040 and 2050 have been made taking the current trends in domestic economy and premises for the development of industries that are main users of these minerals into account. The most promising prospects for growth of domestic demand – with at least a two-fold increase by 2050 – have been determined for manganese dioxide, metallic: magnesium, nickel, silicon, as well as talc and steatite, while an increase by at least 50% have been anticipated for metallic aluminum, tin, metallic manganese, and elemental phosphorus. For natural gas and crude oil growing tendencies have also been predicted, but only by 2030. On the other hand, the most probable decline in domestic demand by 2050 may be foreseen for iron ores and concentrates, bauxite, metallic tungsten, magnesite and magnesia, as well as for crude oil and natural gas, especially after 2040. It seems inevitable that the deficit in the foreign trade of minerals will continue to deepen in the coming years. By 2030 this will mainly result from the growing importation of crude oil and natural gas, but beyond – by 2050 – further deepening in the trade deficit will be related to the growing importation of many metals as well as of some industrial minerals. After 2040, the negative trade balance can be mitigated by a possible decrease in foreign deliveries of hydrocarbons and iron ores and concentrates.Obserwacja trendów zapotrzebowania na surowce mineralne ma fundamentalne znaczenie w długoterminowej ocenie perspektyw rozwoju gospodarczego Polski. Spośród 148 surowców mineralnych poddanych analizie, 42 zostały wskazane jako kluczowe dla polskiej gospodarki. Spośród nich 22 zostały uznane zarazem za surowce deficytowe. Te ostatnie stały się przedmiotem niniejszej pracy. Na podstawie dotychczasowych trendów krajowego zapotrzebowania na te surowce oraz przesłanek rozwoju branż będących ich głównymi użytkownikami, wykonano prognozy rozwoju popytu do 2030, 2040 i 2050 r. Najbardziej obiecujące perspektywy – przy min. dwukrotnym wzroście zapotrzebowania do 2050 r. – stwierdzono dla dwutlenku manganu, magnezu metalicznego, niklu, krzemu oraz talku i steatytu, a zwyżkę o co najmniej 50% – także w przypadku aluminium, cyny, manganu oraz fosforu pierwiastkowego. Dla gazu ziemnego i ropy naftowej wzrost jest oczekiwany, ale tylko do 2030 r. Największe prawdopodobieństwo spadku popytu do 2050 r. dotyczy rud i koncentratów żelaza, boksytów, wolframu oraz magnezytów i magnezji, a także gazu ziemnego i ropy naftowej, w szczególności po roku 2040. W rezultacie, w najbliższych latach deficyt Polski w handlu zagranicznym surowcami mineralnymi będzie się pogłębiał. Do 2030 r. będzie to wynikać głównie z wciąż rosnącego importu ropy naftowej i gazu ziemnego, ale później – do 2050 r. – dalsze pogłębianie się deficytu w obrotach surowcami mineralnymi będzie związane z rosnącym importem wielu surowców metalicznych, w szczególności aluminium, krzemu metalicznego, niklu metalicznego i magnezu metalicznego, a także niektórych surowców niemetalicznych. Po 2040 r. to niekorzystne zjawisko może być złagodzone poprzez możliwy spadek importu węglowodorów oraz rud i koncentratów żelaza

    Early postoperative hemodynamic instability after heart transplantation : incidence and metabolic indicators

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    BACKGROUND: Primary graft dysfunction (PGD) is the main cause of death in the first 30 days after heart transplantation (HTX), accounting for approximately 40% of mortality. The study’s primary aim was to assess the incidence of PGD, following the International Society for Heart and Lung Transplantation consensus, and to compare it with the incidence of significant postoperative hypotension despite administration of high-dose inotropes and vasoconstrictors. The secondary aim of the study was to determine changes in biochemical markers that accompany the phenomenon. METHODS: Forty-five patients who underwent HTX between 2010 and 2015 were enrolled in this study, and detailed hemodynamic and metabolic data from the first 48 postoperative hours were collected and analyzed. Hemodynamic instability was defined as significant postoperative hypotension (mean arterial pressure (MAP)  10). Data for long-term mortality were obtained from the population registration office. RESULTS: PGD incidence was relatively low (17.8%); however, hemodynamic instability was common (40%). Among unstable patients, MAP was insufficient for end-organ perfusion (51.4 ± 9.5 mmHg) but no decrease in left ventricular function was observed (cardiac index, 2.65 ± 0.6 l/min/m2; left ventricular ejection fraction, 52.9 ± 15.5%). Within this group, mean systemic vascular resistance index (961 ± 288 dyn*s*m2/cm5) was low despite receiving high doses of vasoactive agent (norepinephrine 0.21 (0.06-0.27) μg/kg/min during first 24 h postoperatively and 0.21 (0.01-0.27) μg/kg/min during next 24 h postoperatively). After HTX, serum lactate levels were initially significantly higher in patients with hemodynamic instability (p = 0.002); however, impaired lactate clearance was not observed (p = 0.366), and lactate levels normalized within the first 24 h postoperatively. Postoperative hemodynamic instability altered the long-term outcome and increased 5-year mortality after HTX (p = 0.034). CONCLUSIONS: Hemodynamic instability is a more common phenomenon than PGD. Only early postoperative serum lactate levels correspond with hemodynamic instability following HTX. Postoperative hemodynamic instability is associated with poor long-term survival among HTX recipients

    Wojna rosyjsko-ukraińska a bezpieczeństwo surowcowe Polski

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    This work is an attempt to determine the scale of threats to the mineral security of Poland in the area of non-energy raw materials resulting from Russia’s invasion of Ukraine. In particular, it aims to identify those industries whose proper functioning may be threatened in the face of the limited supply of raw materials from three directions – Russia, Belarus and Ukraine. An element of the analysis was also the indication of possible alternative sources of the supply of these raw materials. For this purpose, the directions of imports to Poland of about 140 non-energy raw materials in 2011–2020 were analyzed. As a result, about thirty raw materials were selected, the supplies of which came from, among others, at least one of the three mentioned countries. To determine the raw materials for which the disruption of supplies may have the most serious impact on the functioning of the Polish economy, the following criteria were adopted: a minimum 20% share of these countries in covering the domestic demand in 2020, and a minimum value of these imports in 2020 of 20 million PLN. These threshold conditions were met by eight raw materials: iron ores and concentrates, carbon black, potash, aluminum, ferroalloys, nickel, ball clays and refractory clays, and synthetic corundum. Among these, the need to change the directions of supplies applies to the greatest extent to iron ores and concentrates, aluminum and nickel, while in the case of non-metallic raw materials, it applies most to ball clays and refractory clays and potassium salts. These are among the most important raw materials necessary for the proper functioning of the national economy, but their shortage or disruptions in the continuity of their supplies pose a real threat to the mineral security of Poland.Niniejsza praca jest próbą określenia skali zagrożeń, wynikających z inwazji Rosji na Ukrainę w zakresie bezpieczeństwa surowcowego Polski w obszarze surowców nieenergetycznych. W szczególności ma ona na celu wskazanie tych branż przemysłu, których właściwe funkcjonowanie może być zagrożone wobec ograniczenia dostaw surowców z trzech kierunków, tj. Rosji, Białorusi i Ukrainy. Elementem analizy było również wskazanie możliwych alternatywnych źródeł zaopatrzenia w te surowce. W tym celu przeanalizowano kierunki importu do Polski około 140 surowców nieenergetycznych w latach 2011–2020. Wyłoniono około 30 surowców, których dostawy pochodziły m.in. z co najmniej jednego z trzech krajów objętych konfliktem. Do wyznaczenia surowców, dla których zakłócenie dostaw może mieć najpoważniejszy wpływ na funkcjonowanie polskiej gospodarki przyjęto następujące kryteria: minimum 20-procentowy udział wymienionych krajów w pokryciu krajowego zapotrzebowania w 2020 r. oraz minimalna wartość importu z tych krajów w 2020 r. – 20 mln zł. Warunki te spełniało 8 surowców: rudy i koncentraty żelaza, sadza, sole potasowe, aluminium, żelazostopy, nikiel, iły biało wypalające się i ogniotrwałe oraz korund syntetyczny. Wśród tych surowców konieczność zmiany kierunków dostaw dotyczy w największym stopniu rud i koncentratów żelaza oraz aluminium i niklu, a w przypadku surowców niemetalicznych – iłów biało wypalających się i ogniotrwałych oraz soli potasowych. Należą one do najważniejszych surowców niezbędnych do właściwego funkcjonowania krajowej gospodarki, natomiast niedobór bądź zakłócenia ciągłości ich dostaw oznaczają realne zagrożenie dla bezpieczeństwa surowcowego Polski
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