Wszystkie pola: Jagiełło, R. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Outline of activities of the Polish resistance movement in the territory of occupied France
Autorzy:: Jagiello, R.
Powiązania:: https://bibliotekanauki.pl/articles/30147088.pdf
Data publikacji:: 2018
Wydawca:: Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:: World War II
Polish resistance movement in France
Continental Action
Opis:: The article presents an outline of actions of the Polish resistance movement in occupied France. Particular attention has been given to soldiers and partisans who, prior to the invasion of allied forces on the European continent, performed heroic deeds demonstrating bravery and courage of a Polish soldier. The liberation struggles of the Polish nation in the past war are a still lively subject that focuses the attention of both historians and the society. The Polish participation in the liberation of France, especially through the activities of the Polish resistance movement as part of the operation under the codename “Continental Action”, is the main subject of this article.
Źródło:: Scientific Journal of the Military University of Land Forces; 2018, 50, 2(188); 31-46
2544-7122
2545-0719
Pojawia się w:: Scientific Journal of the Military University of Land Forces
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Uproszczony model rozkładu pierśnic jednowiekowych niepielęgnowanych drzewostanów sosnowych (Pinus sylvestris L.)
Simplified model of diameter distribution for even-aged unthinned Scots pine (Pinus sylvestris L.) stands
Autorzy:: Jagiełło, R.
Beker, C.
Powiązania:: https://bibliotekanauki.pl/articles/986956.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
dendrometria
sosna zwyczajna
Pinus sylvestris
drzewostany sosnowe
drzewostany jednowiekowe
drzewostany niepielegnowane
rozklad piersnic
rozklad uproszczony
rozklad gamma
diameter distribution
gamma poisson
scots pine
unthinned stand
Opis:: Although modelling of the diameter at the breast height (DBH) distributions has long history, theoretical discrete distributions have not so far been used for this purpose. In this study we use measurements covering 25 years (six inventories) without silvicultural influence on 14 even−aged Scots pine (Pinus sylvestris L.) stands to develop the DBH distribution models. Analysed stands are located in Murowana Goślina Forest Experimental Station (W Poland). The objective of the study was to elaborate the most simplified model that applies stand variables easy to assess and uncomplicated theoretical distribution. We employed two−parameter Gamma Poisson (GP) distribution and compared it to Weibull (W) and Sb Johnson (SbJ) ones. When maximum likelihood estimation (MLE) was used, GP gave similar results to W and both were slightly worse than SbJ. We found that both DBH standard deviation and stand density have substantial impact for model bias when above distributions used. Stepwise regression analysis was used for obtaining linear equations for parameter prediction of GP distribution. Then, GP model was simplified by removing standard deviation of DBH (SDD) from equation for overdispersion parameter. Results showed slight increase in mean of error values (i.e. modified Reynolds e index and root mean square error) for simplified model (SGP) compared with those for model including SDD, but differences in means were insignificant. Minimal and mean DBH represent enough variability of diameter distribution to obtain appropriate model based on Gamma Poisson distribution. Error was only 5% greater from four−parameter SbJ (MLE) distribution with similar range: 8.2−28.8% against 5.1−25.5% for SGP and SbJ respectively. The presented model can be used in many branches of forestry for more accurate calculation of stand level variables, when additional allometric equations employed, for instance assimilation apparatus volume or below− and aboveground biomass.
Źródło:: Sylwan; 2017, 161, 10; 822-830
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Ocena zgodności rozkładów empirycznych pierśnic drzewostanów bukowych różnych klas wieku z wybranymi rozkładami teoretycznymi
Goodness of fit evaluation of the breast height diameter distributions of beech stands differing in age with selected theoretical distributions
Autorzy:: Jagiełło, R.
Beker, C.
Jagodziński, A.M.
Powiązania:: https://bibliotekanauki.pl/articles/989389.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
drzewostany bukowe
klasy wieku
buk zwyczajny
Fagus sylvatica
piersnice drzew
rozklad empiryczny
rozklad teoretyczny
ocena zgodnosci
diameter distribution
finite mixture distribution
beech stand
fagus sylvatica
Opis:: Modelling is one of the basic activities in the field of biological sciences. The main purpose of modelling is to illustrate relationships and phenomena of biological objects (and traits describing them) and present reality as close as it is possible with expected range of error. In the paper we presented results of approximation of the selected theoretical distributions, i.e. singular (normal, log−normal, gamma, two− and three−parameter Weibull, Johnsons SB) and finite mixture (normal, log−normal, gamma and Weibull) to tree diameter distributions in beech stands (Fagus sylvatica L.). The main aim of the study was to evaluate goodness of fit of selected distributions, prove legitimacy of using mixture distributions in even−aged, single−species beech stands and find the best distribution of model diameter distribution in a whole production cycle of this kind of stands. The study was conducted in 32 sample plots located in north−western Poland in stands at the age between 9 and 140. For the evaluation χ² test, a modified error index (e) and a root mean square error (RMSE) were used. We found that the RMSE and e are related in most cases with stand density. Mean values of used indicators show that finite mixture distributions are better in comparison to singular distributions. The best fitted distributions were Johnsons SB and mixture of gamma ones. Range of error index expressed with number of trees per hectare ranges 16.5−32.8% and 7.7−27.0% for this distributions, respectively. Conversely the worst results were obtained by fitting two−parameter Weibull distribution both in singular and mixture. Future diameter distribution model based on the probability distribution should be based on Johnson SB or 3−parameter Weibull distribution from singular ones or gamma from finite mixture. In case of age class apportionment unequivocal the best result were obtained with Johnson SB and partially with mixture gamma distributions.
Źródło:: Sylwan; 2016, 160, 02; 107-119
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki