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Wyświetlanie 1-10 z 23
Tytuł:
Creation of unequal error protection codes for two groups of symbols
Autorzy:
Kuriata, E.
Powiązania:
https://bibliotekanauki.pl/articles/907938.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
kody z niejednakową ochroną
kody doskonałe
górna granica Hamminga
dolna granica Hilberta
macierz generująca
kody pływające
unequal error protection codes (UEP codes)
perfect codes
Hamming’s upper bound
Hilbert’s lower bound
generation matrix
Opis:
This article presents problems of unequal information importance. The paper discusses constructive methods of code generation, and a constructive method of generating asymptotic UEP codes is built. An analog model of Hamming’s upper bound and Hilbert’s lower bound for asymptotic UEP codes is determined.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2008, 18, 2; 251-257
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of roosting birds on the abundance of two groups of soil mesofauna
Autorzy:
Ilieva-Makulec, Krassimira
Kozacki, Dawid
Makulec, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/470649.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
Tematy:
corvids
roost
enrichment
mites
springtails
Opis:
The aim of the study was to assess the influence of corvid urban roosts on the abundance of two groups of soil mesofauna: mites and springtails. Two areas located in the city of Warsaw were taken into consideration, one subjected to winter roosting activity of corvids and the other not influenced by birds. The samples were taken three times, in May, July, and September of 2013. The results show a positive effect of corvid roosts on the density of soil mesofauna, especially in the top 0–5 cm soil layer. On each sampling date, we found more numerous communities of mites and springtails in the soil within the roosting area than in control. The average densities of mites ranged from 30×103 ind. m–2 to 200×103 ind. m–2 in the soil within the roost and from 6 ×103 ind. m–2 to 40×103 ind. m–2 in the control. In the case of springtails the average densities ranged from 9×103 ind. m–2 to 36×103 ind. m–2 in the roost and from 4×103 ind. m–2 to 8×103 ind. m–2 in the control. Among the two groups, mites prevailed over the springtails both in the soil of roost and control area. We inferred that the corvid roosting activity, involving mainly an excrement deposition on the soil surface, influences soil mesofauna indirectly through many related changes occurring in soil environment e.g. in nutrient availability, soil acidity, microbial communities.
Źródło:
Studia Ecologiae et Bioethicae; 2015, 13, 4; 117-133
1733-1218
Pojawia się w:
Studia Ecologiae et Bioethicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The occurrence of parasitic arthropods in two groups of European bison in the Bialowieza Primeval Forest
Autorzy:
Izdebska, J N
Powiązania:
https://bibliotekanauki.pl/articles/836664.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
parasite
Bialowieza Forest
European bison
occurrence
parasitic arthropod
Opis:
Within 1992-2000. a total of 181 Białowieża Forest bison were examined from two winter herds. Twelf parasitic arthropod species were observed, a high infestation being typical of Demodex bisonianus, Chorioptes bovis, Ixodes ricinlls, Dermacentor reticulatus, and Bisonicola sedecimdecembrii. The infestation in section 422 herd being higher for B. sedecimdecembrii, I. ricinus, D, reticulatus, Ch. Bovis, D. bisonianus was slightly more prevalent in the section 391 herd, the intensity being, however, lower than that in the other herd. Among the remaining arthropods found in the Białowieża Forest European bison, some Lipoptena cervi occurred in both herds. Demodex sp. and Sarcoptes scabiei were recorded only in the section 422 herd, Ixodes persulcatus was present only in the section 391 bison and those kept in the reservation, while D. bovis, Psoroptes ovis. and Melophagus ovinus were found in the reserve bison only. In the present study, the largest differences in the extent of infestation involved the hair-dwelling arthropods (B. sedecimdecembrii, I. ricinus).
Źródło:
Annals of Parasitology; 2001, 47, 4
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The occurrence of parasitic arthropods in two groups of European bison in the Białowieża Primeval Forest
WYSTĘPOWANIE STAWONOGÓW PASOŻYTNICZYCH W DWÓCH GRUPACH ŻUBRÓW W PUSZCZY BIAŁOWIESKIEJ
Autorzy:
Izdebska, J. N.
Powiązania:
https://bibliotekanauki.pl/articles/2148475.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
parasite
Bialowieza Forest
European bison
occurrence
parasitic arthropod
Opis:
Within 1992-2000. a total of 181 Białowieża Forest bison were examined from two winter herds. Twelf parasitic arthropod species were observed, a high infestation being typical of Demodex bisonianus, Chorioptes bovis, Ixodes ricinlls, Dermacentor reticulatus, and Bisonicola sedecimdecembrii. The infestation in section 422 herd being higher for B. sedecimdecembrii, I. ricinus, D, reticulatus, Ch. Bovis, D. bisonianus was slightly more prevalent in the section 391 herd, the intensity being, however, lower than that in the other herd. Among the remaining arthropods found in the Białowieża Forest European bison, some Lipoptena cervi occurred in both herds. Demodex sp. and Sarcoptes scabiei were recorded only in the section 422 herd, Ixodes persulcatus was present only in the section 391 bison and those kept in the reservation, while D. bovis, Psoroptes ovis. and Melophagus ovinus were found in the reserve bison only. In the present study, the largest differences in the extent of infestation involved the hair-dwelling arthropods (B. sedecimdecembrii, I. ricinus).
Źródło:
Wiadomości Parazytologiczne; 2001, 47, 4; 801-804
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of two parameter groups of the Knothe–Budryk theory in subsidence prediction
Autorzy:
Polanin, P.
Powiązania:
https://bibliotekanauki.pl/articles/91979.pdf
Data publikacji:
2015
Wydawca:
Główny Instytut Górnictwa
Tematy:
akcja górnicza
prognoza
deformacja terenu
mining operation
forecast
surface deformation
Opis:
The research includes geodetic measurements carried out along eight observation lines located in the area of Upper Silesian Coal Basin in order to determine the possible usage of the bimodal method in subsidence prediction. The article contains information about principles of the proposed method, description of observation material and applied software and comparison of calculations results of deformation indicators by the bimodal method (including three parameters: a, tgβ1 and tgβ2) and the classic one (including two parameters: a and tgβ). The article includes initial results in terms of parameters' values determination of the bimodal method on the basis of mining and geological conditions, and it presents an accuracy evaluation of the proposed method.
Źródło:
Journal of Sustainable Mining; 2015, 14, 2; 67-75
2300-1364
2300-3960
Pojawia się w:
Journal of Sustainable Mining
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Healthy Smile Prevention project in Slovakia with students DH Klinik in Presov. Final report of study: cariosity of teeth among schoolchildren within two groups in Slovakia in 2002, 2005, 2007 and 2009
Autorzy:
Koval'ova, E.
Eliasova, A.
Adamisin, P.
Koval, A.
Powiązania:
https://bibliotekanauki.pl/articles/2052422.pdf
Data publikacji:
2015
Wydawca:
Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
Tematy:
cariosity of teeth
prevention
project
pre-school children
schoolchildren
Opis:
In the thesis the authors present complex results of the epidemiological study of oral health of the 6 - 12-year old schoolchildren attending elementary schools in Prešov (Slovakia) who participated in the Healthy Smile Prevention Project. The participants of the Project were represented by the pre-school children and schoolchildren from the age of 4 years attending the pre-school facilities and elementary schools and the project was performed by the dental hygienist, dental disease prevention officer, and school dental care assistant under supervision of a dental practitioner. The oral health of the abovementioned project participants was compared with the oral health of the group of children not participating in the prevention project. The project was supported by the Swiss company GABA.
Źródło:
Health Problems of Civilization; 2015, 09, 2; 27-30
2353-6942
2354-0265
Pojawia się w:
Health Problems of Civilization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cardiovascular Load During Summer Work of Two Age Groups of Van-Rickshaw Pullers in West Bengal, India
Autorzy:
Sahu, S.
Maity, S. G.
Moitra, S.
Sett, M.
Haldar, P.
Powiązania:
https://bibliotekanauki.pl/articles/90511.pdf
Data publikacji:
2013
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
van-rickshaw puller
age
hot environment
cardiovascular load
cardiac cost
wiek
gorące środowisko pracy
układ krążenia
serce
Opis:
Van-rickshaw is a popular mode of transport of people and merchandise in developing countries. The purposeof this study was to assess the effect of age on cardiovascular load of van-rickshaw pullers in the summer season (March–June) in real situations. In 142 participants, divided into 2 age groups (25–40 and 41–55 years), cardiovascular load was assessed on the basis of working and partial recovery heart rate (HR), predicted maximal HR, working maximal HR, average working HR, percentage of reserved HR, sum of recovery heart beats, percentage of recovery, relative and net cardiac cost, etc. Except for percentage of recovery, all parameters differed significantly between the groups and were significantly correlated with age. As this activity is very stressful, it places a heavy demand on the cardiovascular system. Therefore, age is an important factor for sustainability of the work, especially in a hot environment. Some ergonomic interventions are necessary to reduce cardiovascular load.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2013, 19, 4; 657-665
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computational fishing and structural analysis of MIPS protein from two important plant groups
Autorzy:
Hazra, A.
Powiązania:
https://bibliotekanauki.pl/articles/11811.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Opis:
Myo Inositol 1-Phosphate Synthase (MIPS), which catalyzes the first step of inositol metabolism, has been reported from a diverse range of organism like bacteria to human including different groups of plants and animals. The present work is carried out to explore and analyze structural forms of the respective MIPS proteins from complete sequenced genome or proteome available on database of one representative from two important plant groups viz. bryophyte (Physcomitrella patens) and pteridophyte (Selaginella moellendorffii). Previously reported characteristic MIPS sequences was used to identify it’s homolog ones from those members under study. The explored sequences compared with a number of MIPS varieties from other plant members to study the conserveness or evolution of the protein/enzyme. ProtParam tool provided necessary theoretical physicochemical data of the predicted proteins, the three-dimensional structures were predicted through homology modelling with identified amino acid data. Structural evaluation and stereochemical analyses were performed using ProSA-web displaying Z-scores and Molprobity visualising Ramachandran plot.
Źródło:
International Letters of Natural Sciences; 2015, 42
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dwuetniczność międzywojennej Warszawy w świetle wyników wyborów
Two ethnic groups in interwar Warsaw in the light of the results of the elections
Autorzy:
Kowalski, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/684357.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Warszawa
okres międzywojenny
Polacy
Żydzi
zachowania wyborcze
Warsaw
interwar period
Poles
Jews
electoral behaviour
Opis:
The results of the elections, including their spatial diversity, are very often influenced by the cultural diversity of voters. This is clearly visible in Poland during the interwar period (1918-1939). This shows, among other, the study of J. Kopstein and J. Wittenberg (2000). Poles voted for nationwide parties with different ideological features. Members of ethnic minorities choosing parties emphasizing their ethnicity. The only grouping that fully broke the ethnic divide were the Communists, who were voted on by both Polish and Jewish voters. This is also confirmed in the case of election results in Warsaw, a city inhabited by Poles (70%) and Jews (30%). It was a rule that about 75-80% of Warsaw voters voted for the nationwide parties and the remaining 20-25% for the Jewish parties. However, the analysis of the Warsaw elections does not confirm the thesis of J. Kopstein and J. Wittenberg (2000) that the Poles voted ideologically, while the Jews voted for the parties representing the Jews as a minority. Jewish parties also had a differentiated ideological image with the Left, the Right and the Center. Taking into account this diversity, it makes possible to see that Jewish voters expressed greater sympathy for the left-wing parties (Bund, the Communists and Poale Zion) than Poles (Polish Socialist Party, the Communists). At the end of the 1930s, the leftist sympathies were particularly prominent among the Jews. In the elections to the city council of Warsaw in 1938, the left among the Jewish parties won 2/3 votes (the Bund and Poale Zion), while among the national groups only 1/3 (Polish Socialist Party). On the other hand, Kopstein and Wittenberg argue that Jews were not the main source of communist influence in Poland. Support for candidates of this political option in Warsaw, both among Poles as Jews, reached a maximum of 17% (in 1927). Earlier and later support in both communities was lower. At most it may be noted that in the case of Jews before 1927 it was lower than among Poles, while after 1927 higher. Kopstein and Wittenberg are right that the Jews were not the main base of communist influence in Poland. Support for candidates of this political option in Warsaw, both among Poles and Jews, reached a maximum of 17% in 1927. Earlier and later support was lower. In the case of Jews before 1927 it was lower than among Poles, while after 1927 higher.Spatial segregation, both ethnically and socially, has resulted in a strong spatial variation in the results of the elections. The Polish right was dominant in the central districts of the city, the Polish left in the suburbs. The exceptions from this regularity were North Districts (Muranów, Powązki, Grzybów) and part of Praga, where the Jewish parties dominated. The largest concentration of Jewish voters was the Northern District. In its eastern part the Jewish right won, in its western part the Jewish Left and the Communists. Jews were not the main base of influence of Communists in Poland, however, certain circumstances allow to understand why such a stereotype appeared. At least in the case of Warsaw, though perhaps also on a nationwide scale, the Jews showed more sympathy for the left than the Polish voters. In addition, the proportion of Jews among the members of the Communist Party (about 25%), and especially in the authorities of this party (30-50%), was higher than their share in the whole population (10%). Jews also often cooperated with the Polish left to oppose the influence of the nationalist Polish right. For the latter, the identification of the left with the Jews and Jews with the left was a very comfortable argument in the political struggle.
Na wyniki wyborów, w tym ich zróżnicowanie przestrzenne, bardzo często wpływa różnorodność kulturowa wyborców. Widać to wyraźnie w Polsce w okresie międzywojennym. Potwierdzają to również wyniki wyborów w Warszawie – mieście zamieszkiwanym przez Polaków (70%) i Żydów (30%). Polacy głosowali na ogólnopolskie partie o różnych cechach ideologicznych, członkowie mniejszości etnicznych wybierali natomiast partie podkreślające ich pochodzenie. Partie żydowskie miały także zróżnicowany wizerunek ideologiczny, choć można dostrzec, że żydowscy wyborcy wyrażali większą sympatię dla partii lewicowych niż Polacy, aby przeciwstawić się wpływowi nacjonalistycznej prawicy. Jedynym ugrupowaniem, które w pełni przełamało podziały etniczne, byli komuniści. Segregacja przestrzenna, zarówno etniczna, jak i społeczna, spowodowała silne zróżnicowanie wyników wyborów. Polska prawica dominowała w centralnych dzielnicach miasta, polska lewica – na suburbiach. Wyjątkami od tej regularności były dzielnice północne (Muranów, Powązki, Grzybów) i część Pragi, gdzie dominowały partie żydowskie. Największą koncentracją wyborców żydowskich był okręg północny. W jego wschodniej części wygrywała prawica żydowska, w zachodniej części – żydowska lewica i komuniści.
Źródło:
Studia z Geografii Politycznej i Historycznej; 2018, 7; 71-91
2300-0562
2450-0127
Pojawia się w:
Studia z Geografii Politycznej i Historycznej
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 23

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