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Wyszukujesz frazę "Wójcik, Jan" wg kryterium: Wszystkie pola


Tytuł:
On sums of three squares
Autorzy:
Wójcik, Jan
Powiązania:
https://bibliotekanauki.pl/articles/727130.pdf
Data publikacji:
1971
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Źródło:
Colloquium Mathematicum; 1971-1972, 24, 1; 117-119
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany zanieczyszczenia powietrza w Wałbrzyskim Okręgu Przemysłowym w latach 1975 – 2000
Changes in air pollution in the Wałbrzych Industrial District in Poland in 1975–2000
Autorzy:
Wójcik, Jan
Powiązania:
https://bibliotekanauki.pl/articles/986700.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
zanieczyszczenie powietrza
emisja zanieczyszczeń
restrukturyzacja przemysłu
wałbrzyski okręg przemysłowy
Opis:
W artykule przedstawiono zróżnicowanie i zmienność zanieczyszczenia powietrza w Wałbrzyskim Okręgu Przemysłowym w latach 1975 – 2000. Stwierdzono, że w latach 1975 – 1986 występowało tu znaczne zanieczyszczenie powietrza, a normy dopuszczalne stężeń yłów i gazów często były wielokrotnie przekroczone. W okresie 1987 – 1994 zaznaczył się znaczny spadek imisji badanych zanieczyszczeń w powietrzu zwykle poniżej norm dopuszczalnych. Wiązało się to z kryzysem ekonomicznym pod koniec lat 80. oraz restrukturyzacją gospodarki i likwidacją tradycyjnych gałęzi przemysłu w regionie w ostatniej dekadzie XX w. W latach 1995 – 2000 stężenia większości zanieczyszczeń w powietrzu nie przekraczały norm dopuszczalnych. Z miany w zanieczyszczeniu powietrza w Wałbrzyskim Okręgu Przemysłowym w okresie transformacji gospodarczej są podobne do tych, jakie wystąpiły w innych obszarach uprzemysłowionych m.in. w Górnośląskim, Ostravsko-Karvińskim oraz na obszarze pogranicza Polski, Czech i Niemiec.
The article presents the variation of air pollution in the Wałbrzych Industrial District in 1975 – 2000 at its spatial and temporal aspects. It was found that within 1975 – 1986 air pollution occurred here at a significant level and acceptable standards of dust and gas concentrations were often exceeded here. In the period of 1987 – 1994 there was a significant decrease in the concentrations of pollutants in the air, usually below acceptable standards. It was related to the economic crisis at the end of the 1980s and the restructuring of the industry in due to the economic transformation in Poland in the last decade of the 20 th century. In 1995 – 2000, the concentrations of most pollutants in the air does not exceed acceptable standards. The changes in air pollution in the Wałbrzych Industrial District in the period of the economic transformation are similar to the ones which occurred in other industrialised areas e.g. the Upper Silesia Industrial District (Poland), in the Ostrava-Karvina Industrial District (Czech Republic) as well as within the border areas of Poland, Czech Republic and Germany where the energy sector based on brown coal.
Źródło:
Prace Geograficzne; 2014, 136
1644-3586
Pojawia się w:
Prace Geograficzne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geografia na maturze – zróżnicowanie merytoryczne i ocena zadań… z arkuszy egzaminacyjnych w latach 2005–2011
Geography on the high school final examinations – the substantive diversity and the assessment of the tasks from examination sheets in the years 2005–2011
Autorzy:
Wójcik, Jan
Powiązania:
https://bibliotekanauki.pl/articles/471748.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
matura z geografii
ocena zadań maturalnych
wiedza
umiejętności
zróżnicowanie treści zadań maturalnych
Final exam secondary school of the geography
evaluation tasks of the final exam secondary school
knowledge
skills
diversity of the content of tasks final exam secondary school
Opis:
The paper presents a substantive and methodological assessment of the tasks and the trends in changes in the scope of knowledge and skills tested during the final examinations (matura) at Polish high schools in the years 2005–2011. The examination sheets contained a various number of tasks (27–38). They included open-ended and closed-ended tasks. With a total of 14 sheets, closed-ended tasks predominated in 9 sheets, open-ended tasks prevailed in 4 sheets, while the number of open-ended and closed-ended tasks was equal in one sheet (Table 1). Typically, more tasks were prepared to verify knowledge than to check skills (Table 2). The number of closed-ended tasks and the tasks verifying knowledge increased, while the number of open-ended tasks and the tasks checking skills decreased. These unfavourable trends were observed at the high school final examinations in the years 2005–2011. Out of the 14 sheets, tasks related to geography of the world predominated in 9 sheets, while tasks related to geography of Poland prevailed in 5 sheets (Table 2). At the high school final examination at the basic level, a greater emphasis was put on the knowledge of geography of Poland, while at the extended level – on the geography of the world. At high school final examinations prevailed tasks related to socio-economic geography (42%). 33% of the tasks concerned physical geography, 15% – regional geography, and 10% – cartography and world time calculation. In individual sheets at the basic level, the tasks related to socio-economic geography accounted for 29–44% of all tasks, while at the extended level – 32–56%. In the extended version of high school final examinations, a considerable number of tasks (25–45%) was associated also with physical geography. Typically, significantly fewer tasks of this type were prepared for the basic level (9–32%). However 18–30% of the tasks put there were related to regional geography – considerably more than in the sheets at the extended level (10–21%). The smallest number of tasks at high school final examinations concerned cartography and world time calculation (basic level: 10–19%, extended level: 3–17%). The number of points for the tasks in the aforementioned groups was not always proportional to the number of tasks. The highest number of tasks and related points at the basic and extended examinations was associated with the knowledge of facts and the ability to draw conclusions from the texts, illustrations, maps, and models attached to the tasks (36% of the tasks and points). The second most numerous group included tasks related to the knowledge of events concerning the contemporary political, social and economic situation in Poland, and in the world (basic level: 22% of tasks and 23% of points, extended level: 26% of tasks and points). In the extended-level sheets, there were more tasks concerning explanation of the processes and phenomena occurring in the geographical environment than in the sheets at the basic level; also more points were awarded for them (17% and 18%; 15% and 14%). In the basic version of the high school final examination, twice as many tasks relating to the work with maps were included than in the extended version (16% and 8%) and twice as many points (16% and 6%) could be obtained. Tasks related to the astronomical bases of geography and related points at both levels of requirements constituted 3%/6% and 3%/7% respectively, of the total number of tasks. The number of tasks verifying the knowledge of concepts and definitions, as well as the number of points were similar in the sheets at both levels (8%/9% and 7%/7% respectively) (Table 4). Some errors and inaccuracies were unfortunately not avoided at the high school final examinations (Table 16). The highest number of mistakes was observed in the basic level sheet of the high school final examination of 2005 (in 29% of the tasks). At subsequent examinations, errors occurred in a few tasks. The model of the sheet developed for the first high school final examination has not changed significantly for 7 years.
Źródło:
Annales Universitatis Paedagogicae Cracoviensis Studia Geographica; 2013, 4 Współczesne obszary badań w dydaktyce geografii; 84-100
2084-5456
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis Studia Geographica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Specjacja u myszy domowych, Mus musculus - mechanizmy izolujące
Speciation in the house mouse, Mus musculus - mechanisms of isolation
Autorzy:
Kawałko, Agata
Wójcik, Jan
Powiązania:
https://bibliotekanauki.pl/articles/1197949.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Przyrodników im. Kopernika
Opis:
Speciation, the formation of species, is a central problem in evolutionary biology. The genetic basis and evolution of reproductive isolation between taxa is a key for understanding speciation. The house mouse Mus musculus is an excellent model for the study of reproductive isolation. Two subspecies, M. m. musculus and M. m. domesticus that diverged from each other approximately between 1,000,000-350,000 years ago, form a narrow hybrid zone that extends across Europe. The standard chromosome complement of this species consists of 40 acrocentric chromosomes. However, in M. m. domesticus there are many local karyotypic races that are characterised by different sets of acrocentrics and metacentrics. Accumulation of chromosomal rearrangements may lead to reproductive isolation between populations. The first theoretical model of this process was postulated by Dobzhansky (1937) and Muller (1942). They expressed the idea that speciation is a by-product of independent divergence between populations. The hybrid zone between sister mouse taxa can be used to identify genomic regions underlying reproductive isolation. Variation in the degree of gene flow across the hybrid zone is measured using molecular markers. Thus, mice offer a unique opportunity to study relationships between genotype and phenotype.
Źródło:
Kosmos; 2006, 55, 1; 107-116
0023-4249
Pojawia się w:
Kosmos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Echa z Oberlangen : list do pułkownika Koszutskiego
Autorzy:
Modzelewska-Wójcik, Danuta.
Powiązania:
Kombatant 2001, nr 4, s. 8-9
Współwytwórcy:
Wójcik, Jan. Opracowanie
Data publikacji:
2001
Tematy:
Koszutski, Stanisław.
Obóz jeniecki Oberlangen wyzwolenie 1945 r. pamiętniki.
Obozy jenieckie Niemcy 1944-1945 r. pamiętniki.
Jeńcy wojenni polscy Niemcy 1944-1945 r. pamiętniki.
Opis:
Odpowiedź na artykuł Stanisława Koszutskiego, opublikowany w 1959 r. w ukazującym się w Rio de Janeiro "Przeglądzie Polskim".
Dostawca treści:
Bibliografia CBW
Artykuł

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