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Tytuł:
Comparing deterministic and statistical approaches for predicting “short can” defects in aluminium beverage can production
Autorzy:
Baran, Wojciech
Regulski, Krzysztof
Kąc, Sławomir
Milenin, Andrij
Powiązania:
https://bibliotekanauki.pl/articles/29519771.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
short can
deterministic
analysis
statistical methods
predict
defect
reduce
decizion trees
Opis:
In the production of beverage cans, “short can” defects in the form of material discontinuities can occur during the deep drawing of cylindrical thin-walled aluminium products. These defects have a significant impact on production efficiency and scrap generation, and their occurrence is influenced by material and process properties. To determine the main influence of material on defect occurrence, two approaches were used: deterministic analysis of mechanical properties and microstructure, as well as statistical processing of production data using decision tree models. The latter approach was found to be more efficient, and a numerical tool was developed based on this approach to predict and reduce defect occurrence in the production process.
Źródło:
Computer Methods in Materials Science; 2023, 23, 2; 29-38
2720-4081
2720-3948
Pojawia się w:
Computer Methods in Materials Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dendroflora wybranych parków miejskich w Bielsku-Białej
Dendroflora of the selected urban parks of Bielsko-Biała
Autorzy:
Pietraszko, Ewa
Żarnowiec, Jan
Klama, Henryk
Adamaszek, Marcin
Kozak, Maciej
Kóska, Monika
Owczarz, Sebastian
Sawa, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/24964471.pdf
Data publikacji:
2023-12
Wydawca:
Uniwersytet Bielsko-Bialski
Tematy:
dendroflora
parki
tereny zieleni
zieleń miejska
drzewa w Bielsku-Białej
parks
green areas
urban greenery
trees in Bielsko-Biała
Opis:
Parks are undoubtedly areas of great natural value to the city, mainly due to the ecosystem services and ecological functions they provide. An important component of every park is its forest stand. In this paper, the study of dendroflora were conducted in seven parks of Bielsko-Biała. The parks were created in the 19th century. They are located mainly in the central part of the city. This paper presents the results of the study on the species composition as well as the quantity of each species in the parks. Furthermore, basic dendrometric characters such as tree height and circumference at the breast height were also analyzed. A total of 615 trees belonging to 32 species from 21 genus and 12 families were found in parks. There was a dominance of deciduous trees (28 species) over conifers (5). The largest number of examined trees was in Strzegowski Park, and the smallest in Park at Komorowicka Street. In turn, the largest number of species was in Słowacki Park, and the smallest in the Park near to Zipser villa. In addition, the presence of 144 specimens with monumental dimensions was indicated. Most of the park trees had dimensions in the range of 200–300 cm in terms of circumference at the breast height and height in the interval 20–30 m. Typical trees that occur in the natural forest communities of Poland were noted in the parks. These include: oaks, beeches, ash trees, hornbeams, alders, maples or lindens. Some of them are often selected for planting in parks and avenues. Of the 32 tree species, 10 were most numerous: Tilia cordata, T. platyphyllos, Acer platanoides, A. pseudoplatanus, A. saccharinum, Fraxinus excelsior, Alnus glutinosa, Carpinus betulus, Aesculus hippocastanum and Quercus robur. Among examined species, alien invasive species (Robinia pseudoacacia and Quercus rubra) were noted. They are classified as medium invasive plants. In this paper the authors pointed out the parameters that can affect the number of trees included in the study, for example: minimum circumference at the breast height, park area, age of the forest stand and local condition. Therefore, further research regarding the dendroflora in parks of Bielsko-Biała should be expanded with additional analyses, especially to determinate full species composition and changes in the stand.
Źródło:
Polish Journal of Materials and Environmental Engineering; 2023, 6(26); 13-24
2720-1252
Pojawia się w:
Polish Journal of Materials and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Machine learning methods for diagnosing the causes of die-casting defects
Autorzy:
Okuniewska, Alicja
Perzyk, Marcin
Kozłowski, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/29519775.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
fault diagnosis
machine learning tools
neural network
classification trees
support vector machine
Opis:
The research was focused on analyzing the causes of high-pressure die-casting defects, more specifically on casting leakage, which is considered perhaps the most important and common defect. The real data used for modelling was obtained from a high-pressure die-casting foundry that manufactures aluminum cylinder blocks for the world’s leading automotive brands. This paper compares and summarizes the results of applying advanced modelling using artificial neural networks, regression trees, and support vector machines methods to select artificial neural networks as the most effective method to perform a multidimensional optimization of process parameters to diagnose the causes of die-casting defects and to indicate the future research scope in this area. The developed system enables the prediction of the level of defects in castings with satisfactory accuracy and is therefore a highly relevant reference for process engineers of high-pressure foundries. This article indicates exactly which process parameters significantly influence the formation of a defect in a casting.
Źródło:
Computer Methods in Materials Science; 2023, 23, 2; 45-56
2720-4081
2720-3948
Pojawia się w:
Computer Methods in Materials Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plany zagospodarowania przestrzennego jako instrument zarządzania zieloną infrastrukturą
Land use plans as an instrument for green infrastructure management
Autorzy:
Nowak, Maciej J.
Szulczewska, Barbara
Legutko‑Kobus, Paulina
Giedych, Renata
Oleńczuk-Paszel, Anna
Powiązania:
https://bibliotekanauki.pl/articles/2192755.pdf
Data publikacji:
2023
Wydawca:
Kancelaria Sejmu. Biuro Analiz Sejmowych
Tematy:
green areas
trees
biologically vital area
Opis:
The aim of the article is to present the results of a study on the challenges and barriers related to the role of land use plans in the management of green infrastructure in small and medium-sized cities. This research forms part of a larger project dedicated to analysing the importance of green infrastructure as a natural and social resource of small and medium-sized cities in Poland. The subject of the study are 814 spatial development plans in force in 20 Polish cities (12 medium-sized and 8 small). The selection of these cities was dictated by the assumptions of the research project and related to two basic criteria: the model of the layout of areas covered with vegetation or water and the projected development trajectory. What was analysed in the plans were the patterns of provisions that could be linked to green infrastructure. Provisions concerning green spaces, woodland areas and other specific provisions (which could be linked to green infrastructure) were identified.
Źródło:
Studia BAS; 2023, 1(73); 59-73
2080-2404
2082-0658
Pojawia się w:
Studia BAS
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Społeczne znaczenie zieleni miejskiej podczas pandemii COVID-19. Stan badań
The social significance of urban greenery during the COVID-19 pandemic. State of research
Autorzy:
Łukaszkiewicz, Jan
Fortuna-Antoszkiewicz, Beata
Botwina, Jakub
Powiązania:
https://bibliotekanauki.pl/articles/22444290.pdf
Data publikacji:
2023
Wydawca:
Mazowieckie Biuro Planowania Regionalnego w Warszawie
Tematy:
miasta
zieleń miejska
drzewa
zadrzewienia
komfort wypoczynku
pandemia COVID-19
cities
urban greenery
trees
woodlots
leisure comfort
COVID-19 pandemic
Opis:
Zdrowa, bujna zieleń jest czynnikiem, który działa odprężająco, kojąco i terapeutycznie na ludzki organizm – zarówno w sferze fizycznej, jak i psychicznej (soma i psyche). W Europie począwszy od XIX w. zieleń była świadomie wprowadzana do struktury urbanistycznej miast, a działania te intensyfikowano w XX i XXI w., m.in. poprzez odtwarzanie zasobów po zniszczeniach z okresu I oraz II wojny światowej oraz zakładanie w miastach nowych wielofunkcyjnych parków i ogrodów tematycznych. Celem niniejszego opracowania jest przedstawienie badań potwierdzających, że roślinność ma niezwykle korzystny wpływ na stan zdrowotny i jakość życia ludzi, co zostało dobitnie udowodnione podczas pandemii COVID-19. Pandemia ta, oprócz samego chorobotwórczego działania wirusa, przyniosła ze sobą poważne konsekwencje dla jakości życia znacznej części populacji wielu krajów na świecie, zarówno w sferze ogólnej kondycji zdrowotnej, jak i zdrowia psychicznego. Badania obejmują kilka zasadniczych etapów. W pierwszej kolejności określono problematykę i sformułowano główny cel badań. Następnie przeprowadzono kwerendę literatury przedmiotu, aby zgromadzić przykłady dotyczące kluczowej roli parków miejskich, lasów i drzew dla jakości życia w miastach, zwłaszcza w kontekście pandemii COVID-19. Wynikiem analizy zebranych danych jest stwierdzenie, że parki, lasy miejskie, zieleń wysoka i itp. mają niezwykle istotne i pozytywne znaczenie dla środowiska miejskiego, ale przede wszystkim dla społeczności miejskiej i jakości życia, zwłaszcza w czasie pandemii. Szczególnie duże znaczenie ma optymalna struktura zadrzewień – nieschematyczna, swobodna, odwzorowująca cechy stylu krajobrazowego, która wpływa bardzo ściśle na jakość wypoczynku. W podsumowaniu przedstawiono syntetycznie kryteria, jakimi powinna odznaczać się zieleń miejska dla wypoczynku i rekreacji, określając zasadnicze przyczyny i problemy związane z utrzymaniem zieleni w miastach, ponieważ aby prozdrowotne oddziaływanie zieleni było skuteczne, musi być zapewnione jej odpowiednie utrzymanie i pielęgnacja.
Healthy, lush greenery is a factor that works relaxingly, soothingly, and therapeutically on the human body – both in the physical and psychological spheres (soma and psyche). Already throughout the 19th century, greenery was consciously incorporated into the urban structure of cities (e.g. city squares, parks, public gardens, children's playgrounds, or numerous spa parks in health resorts), intensifying such activities in the 20th and 21st century (restoration of natural resources after World War I and II, the establishment of new multifunctional parks and theme gardens). The aim of the study is to present research confirming that vegetation has an extremely beneficial impact on the health and quality of life of people, e.g. in the aesthetic, emotional or physiological sphere – especially during the COVID-19 pandemic. Besides the pathogenic action of the virus itself, this pandemic brought about serious consequences for the quality of life of a significant part of the population in many countries worldwide, both in terms of general health condition and mental health. The research includes several fundamental stages. First, the issues were defined and the main research goal was formulated. Subsequently, a literature survey was conducted to collect examples concerning the crucial role of urban parks, forests and trees for the quality of life in cities, especially in the context of the COVID-19 pandemic. The result of the analysis of the collected data shows that parks, urban forests and high greenery etc. have an extremely significant and positive impact on the urban environment, but above all on the urban community and the quality of life, especially during the pandemic. In such a case, the optimal structure of the canopy is particularly important. The paper presents synthetically the criteria that urban greenery should featured to provide a wide range of positive stimuli for positive importance for social health. Particularly significant is the optimal structure of greenery – non-schematic, free, reflecting the features of landscape style, which has a very close influence on the quality of leisure. The conclusion synthetically presents criteria by which urban greenery should be characterized for relaxation and recreation, defining fundamental issues related to its maintenance. To ensure that the health-promoting effects of greenery are effective, proper maintenance and care must be provided.
Źródło:
MAZOWSZE Studia Regionalne; 2023, 47; 9-25
1689-4774
Pojawia się w:
MAZOWSZE Studia Regionalne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The application of logical decision trees to the decision-making process in ill-structured problems
Zastosowanie logicznych drzew decyzyjnych do procesu podejmowania decyzji w problemach słabo ustrukturalizowanych
Autorzy:
Sadowińska-Kałuża, Milena
Kałuża, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/29521140.pdf
Data publikacji:
2023
Wydawca:
Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:
decision-making
ill-structured decision
logical decision trees
podejmowanie decyzji
decyzja słabo ustrukturalizowana
logiczne drzewa decyzyjne
Opis:
Decision-making is a process which has accompanied the human being since time immemorial and in various areas of their activity. It should result in making a choice that meets the expectations (conditions) of the decision maker to the greatest extent. Decisions can be made on the basis of information which is not always complete and reliable. Sometimes it may happen that it is incomplete and reliable or complete but unreliable. Then, it concerns ill-structured problems. The purpose of this article is to verify whether ill-structured problems can be solved/supported in a way based on an operating algorithm. In the article, a case study with complete but unreliable information as well as with complete and reliable information was used. Logical decision trees were employed in the study. The result of the study allowed for, among others, establishing that the analysis of an ill-structured problem using logical decision trees consists in performing steps which follow one another in a logical sequence creating thus a sequence of operations, and therefore an operating algorithm, which confirms that solving ill-structured problems can be supported/implemented using an algorithm.
Podejmowanie decyzji stanowi proces, który towarzyszy człowiekowi od zawsze i w różnych obszarach jego działalności. Jego rezultatem powinno być dokonanie wyboru, który w największym stopniu spełnia oczekiwania (warunki) decydenta. Decyzje można podejmować na podstawie informacji, które nie zawsze są pełne i pewne. Czasem może się zdarzyć, że są niepełne i pewne lub pełne, ale niepewne. Wówczas dotyczą one problemów słabo ustrukturalizowanych. Celem niniejszego artykułu jest weryfikacja, czy problemy słabo ustrukturalizowane można rozwiązywać/wspierać ich rozwiązywanie w sposób oparty na algorytmie działań. W artykule wykorzystano analizę przypadku z informacjami pełnymi, ale niepewnymi oraz pełnymi i pewnymi. Posłużono się w niej logicznymi drzewami decyzyjnymi. Jej wynik pozwolił m.in. na stwierdzenie, że analiza problemu słabo ustrukturalizowanego za pomocą logicznych drzew decyzyjnych polega na wykonaniu kroków, które następują po sobie w logicznej kolejności. Tworząc tym samym ciąg czynności, a zatem algorytm działania, co potwierdza, że rozwiązywanie problemów słabo ustrukturalizowanych może być wspierane/realizowane za pomocą algorytmu.
Źródło:
Scientific Journal of the Military University of Land Forces; 2023, 55, 2(208); 77-90
2544-7122
2545-0719
Pojawia się w:
Scientific Journal of the Military University of Land Forces
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ wykonania szlaków operacyjnych na wartość hodowlaną jednowiekowych drzewostanów sosnowych przy różnych metodach trzebieży
The influence of the establishment of skid trails on the silvicultural quality of even-aged Scots pine stands in different thinning treatments
Autorzy:
Zachara, Tadeusz
Powiązania:
https://bibliotekanauki.pl/articles/29519606.pdf
Data publikacji:
2023-11-23
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
silviculture
Scots pine
future crop trees
tending cuts
skid trails
hodowla lasu
sosna zwyczajna
drzewa dorodne
cięcia pielęgnacyjne
szlaki operacyjne
Opis:
The study was conducted on a permanent experimental plot established in 1965 in the Kozienice Forest District to investigate the effects of spacing on the growth of Scots pine. Since 1999, the plot has also been used to study the effects of thinning - using a randomized block design. In this study, seven treatments (four blocks) out of a total of nine treatments present on the plot were included. The following treatments were tested: (1) moderate selective thinning TU1 and TU2 (focusing on 500 future crop trees per hectare evenly distributed on the plot), (2) group thinning TG1 and TG2 (focusing on the same number of future crop trees not evenly distributed on the plot), (3) heavy thinning TS1 and TS2 (focusing on 350 future crop trees per hectare), and (4) control plot (K, without thinning). During the last thinning, a network of skid trail s (each 17-18 m) was established in the study plot to enable the use of a harvester. The aim of the study was to evaluate the influence of the establishment of skid trails on the loss of future crop trees in different treatments. All trees removed in the period 2015-2020 (including natural mortality and mortality caused by the establishment of skid trails) were counted and their basal area calculated. ANOVA was performed to investigate the influence of thinning treatments on natural and artificial loss of trees between successive thinnings. The largest total number and basal area of trees removed was found in control plot K. The greatest loss of future crop trees was observed in the plots treated with group thinning TG1. In plots with a lower number of future crop trees (TS1), the loss was zero. In summary, the establishment of skid trails in heavily thinned Scots pine stands with wide spacing is acceptable. The skid trails should be established before the selection of future crop trees.
Źródło:
Leśne Prace Badawcze; 2023, 83; 51-56
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie drzew sufiksowych do efektywnej prezentacji podobieństw sesji z systemu pułapek honeypot
Autorzy:
Skłodowski, Jakub
Arabas, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/13949978.pdf
Data publikacji:
2023-02-20
Wydawca:
Akademia Sztuki Wojennej
Tematy:
honeypots
malware
session analysis
suffix trees
Opis:
The article presents a prototype of a system for analyzing data from a honeypot network. A special attention is paid to finding similarities in the collected ssh sessions. The algorithm proposed looks for generalized patterns in the session using suffix trees. The patterns can be used for a convenient presentation of the displayed sessions and for searching. The examples of analysis carried out with the help of the algorithm are presented.
Źródło:
Cybersecurity and Law; 2023, 9, 1; 298-315
2658-1493
Pojawia się w:
Cybersecurity and Law
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of tree-based methods used in survival data
Autorzy:
Yabaci, Aysegul
Sigirli, Deniz
Powiązania:
https://bibliotekanauki.pl/articles/2034119.pdf
Data publikacji:
2022-03-15
Wydawca:
Główny Urząd Statystyczny
Tematy:
tree-based methods
conditional inference trees
conditional inference forests
random survival forests
Opis:
Survival trees and forests are popular non-parametric alternatives to parametric and semiparametric survival models. Conditional inference trees (Ctree) form a non-parametric class of regression trees embedding tree-structured regression models into a well-defined theory of conditional inference procedures. The Ctree is applicable in a varietyof regression-related issues, involving nominal, ordinal, numeric, censored, as well as multivariate response variables and arbitrary measurement scales of covariates. Conditional inference forests (Cforest) consitute a survival forest method which combines a large number of Ctrees. The Cforest provides a unified and flexible framework for ensemble learning in the presence of censoring. The random survival forests (RSF) methodology extends the random forests method enabling the approximation of rich classes of functions while maintaining generalisation errors low. In the present study, the Ctree, Cforest and RSF methods are discussed in detail and the performances of the survival forest methods, namely the Cforest and RSF have been compared with a simulation study. The results of the simulation demonstrate that the RSF method with a log-rank score distinction criteria outperforms the Cforest and the RSF with log-rank distinction criteria.
Źródło:
Statistics in Transition new series; 2022, 23, 1; 21-38
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostics of the drive shaft bearing based on vibrations in the high-frequency range as a part of the vehicles self-diagnostic system
Autorzy:
Nowakowski, Tomasz
Komorski, Pawel
Powiązania:
https://bibliotekanauki.pl/articles/2057986.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
self-diagnostic system
vibration
vehicles
signal processing methods
decision trees
Opis:
Currently, one of the trends in the automotive industry is to make vehicles as autonomous as possible. In particular, this concerns the implementation of complex and innovative selfdiagnostic systems for cars. This paper proposes a new diagnostic algorithm that evaluates the performance of the drive shaft bearings of a road vehicle during use. The diagnostic parameter was selected based on vibration measurements and machine learning analysis results. The analyses included the use of more than a dozen time domain features of vibration signal in different frequency ranges. Upper limit values and down limit values of the diagnostic parameter were determined, based on which the vehicle user will receive information about impending wear and total bearing damage. Additionally, statistical verification of the developed model and validation of the results were performed.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 1; 70--79
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Drzewa przydrożne w gminie Buczkowice (województwo śląskie)
Roadside trees in the Buczkowice commune (Silesian Voivodeship)
Autorzy:
Pietraszko, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/2063999.pdf
Data publikacji:
2022
Wydawca:
Akademia Techniczno-Humanistyczna w Bielsku-Białej
Tematy:
drzewa przydrożne
inwentaryzacja
monitoring biologiczny
roadside trees
environmental inventory
biological monitoring
Opis:
The research consisted of inventory and health status assessment of 105 roadside trees growing along Voivodeship Road 942 (Buczkowice commune, Silesian Voivodeship). During the study, dendrometric data, such as: tree height, circumference and diameter at the base and at the breast height, crown height, height to first branches, crown span and its shape were collected. Roadside trees, on the one hand, are aesthetic element of road surroundings responsible for environmental and protective functions, and on the other they effect on the safety of road users. Taking this into consideration, it is necessary to take care of regularity of maintenance activities and treatments to ensure proper trees health. At the same time, the proximity of the road may lead to need to remove some trees - e.g. during modernization and construction works related to road infrastructure. Roadside trees in the Buczkowice commune belonged to 13 species, among which 10 were deciduous tree species and 3 were coniferous species. The most numerous were black poplars cultivar 'Italica' (Populus nigra L. 'Italica', 21 specimens). Two invasive alien species (green ash Fraxinus pennsylvanica and black locust Robinia pseudoacacia) were found with a total number of 15. Three trees had circumference that corresponded to the circumference of monumental trees (two sycamores Acer pseudoplatanus and one black alder Alnus glutinosa). Trees health condition was based on presence of trunk and crown damage. Specifically, 53 of the examined roadside trees had satisfactory, 37 - average, 9 - good and 6 - poor health condition. In order to keep trees in good health, regular conservation and protection treatments are recommended. It was noted that such actions can help reduce the risk to road safety. The main threats to roadside trees were also indicated (collisions with vehicles, increase in salinity due to the use of chemicals to prevent road icing during winter and waste deposited around trees). In addition, the quantitative status of roadside trees in 2018 and 2022 were compared. Before 2022, 46 trees were removed as a result of road investments involving the construction of ring road of Buczkowice, sidewalk and bicycle path.
Źródło:
Polish Journal of Materials and Environmental Engineering; 2022, 3(23); 28-43
2720-1252
Pojawia się w:
Polish Journal of Materials and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimating and testing relations and trees on the basis of pairwise comparisons
Autorzy:
Klukowski, Leszek
Powiązania:
https://bibliotekanauki.pl/articles/31342752.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
pairwise comparisons with random errors
estimation of relations
testing of relations
estimation of trees
testing of trees
nearest adjoining order idea
Opis:
The paper presents an ample account on author’s results, concerning the methods of estimating and testing of relations (equivalence, tolerance, preference) and trees on the basis of multiple pairwise comparisons with random errors, which are presented in a new book, Klukowski (2021c). The book contains also main results presented earlier in Klukowski (2011). The new content pertains mainly to: the preference relation with incomparable elements, trees and tests for verification of estimates of the relations. The estimators and tests have good statistical properties; estimators - consistency with good convergence, tests - known distributions of test statistics (exact, limiting or approximate). Some properties of estimates (precision and convergence) have been determined using the simulation approach. The results here reported gain in significance in view of the renewed interest in practical application of pairwise comparisons in various application domains, which give rise to various concrete data analysis problems.
Źródło:
Control and Cybernetics; 2022, 51, 4; 501--522
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ForestTaxator : a tool for detection and approximation of cross-sectional area of trees in a cloud of 3D points
Autorzy:
Małaszek, Maciej
Zembrzuski, Andrzej
Gajowniczek, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/2201227.pdf
Data publikacji:
2022
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Instytut Informatyki Technicznej
Tematy:
point cloud
genetic algorithms
trees
3D scan
Opis:
In this paper we propose a novel software, named ForestTaxator, supporting terrestrial laser scanning data processing, which for dendrometric tree analysis can be divided into two main processes: tree detection in the point cloud and development of three-dimensional models of individual trees. The usage of genetic algorithms to solve the problem of tree detection in 3D point cloud and its cross-sectional area approximation with ellipse-based model is also presented. The detection and approximation algorithms are proposed and tested using various variants of genetic algorithms. The work proves that the genetic algorithms work very well: the obtained results are consistent with the reference data to a large extent, and the time of genetic calculations is very short. The attractiveness of the presented software is due to the fact that it provides all necessary functionalities used in the forest inventory field. The software is written in C# and runs on the .NET Core platform, which ensures its full portability between Windows, MacOS and Linux. It provides a number of interfaces thus ensuring a high level of modularity. The software and its code are made freely available.
Źródło:
Machine Graphics & Vision; 2022, 31, 1/4; 19--48
1230-0535
2720-250X
Pojawia się w:
Machine Graphics & Vision
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gatunki inwazyjne w zadrzewieniach na przykładzie czeremchy amerykańskiej
Invasive species in collections on the example of American Cherry
Autorzy:
Baranowska, Marlena
Korzeniewicz, Robert
Kończak, Sławomir
Janik, Łukasz
Ziemkowska, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/2159199.pdf
Data publikacji:
2022-12-22
Wydawca:
Centrum Doradztwa Rolniczego w Brwinowie. Oddział w Poznaniu
Tematy:
Prunus serotina
drzewa w krajobrazie rolniczym
gatunki obce
introdukcja
trees in agricultural landscape
alien species
introduction
Opis:
Zadrzewienia śródpolne pełnią istotną rolę w kształtowaniu krajobrazu rolniczego, a także ograniczają negatywny wpływ zmian klimatu na środowisko. Tworzeniu nowych zadrzewień miały służyć m.in. programy rolnośrodowiskowe. Zakładanie zadrzewień śródpolnych jest zadaniem niełatwym wymagającym sporej wiedzy i doświadczenia. Projektując skład gatunkowy zadrzewienia należy wystrzegać się inwazyjnych gatunków obcych. Celem artykułu jest wyjaśnienie na przykładzie czeremchy amerykańskiej powodów, dla których gatunki inwazyjne nie powinny być wykorzystywane w zadrzewieniach i zalesieniach. Czeremcha amerykańska jest konkurencyjna w stosunku do rodzimych gatunków drzew i krzewów, ale i dla roślin zielnych. Wysoka i coroczna zdolność do obfitego owocowania czeremchy amerykańskiej i jej cechy użytkowe (np. miododajność) spowodowały, że jest ona nadal powszechnie produkowana jako materiał ozdobny i zadrzewieniowy w szkółkach komercyjnych. Nie rekomendujemy tego gatunku do nasadzeń w zadrzewieniach i zalesieniach, m.in. ze względu na to, że jest to gatunek inwazyjny, który istotnie zagraża rodzimym ekosystemom. Tam, gdzie to możliwe proponujemy wprowadzanie rodzimej czeremchy zwyczajnej lub innych rodzimych gatunków drzew i krzewów, które z powodzeniem mogą zastąpić niechcianego przybysza zza oceanu.
Mid-field shelterbelts play a key role in shaping the agricultural landscape, and also reduce the negative impact of climate change on the environment. The aim of created new tree stands is, among others, agri-environmental programs. Establishing field trees is a difficult task that requires a lot of knowledge and experience. When designing the species composition of trees, one should avoid invasive alien species. The aim of this article is to explain the reasons why invasive species should not be used in planting and afforestation, using the example of the black cherry. The black cherry is competitive in relation to native species of trees and shrubs, but also to herbaceous plants. Due to the high and annual capacity for abundant fruiting of the black cherry and its functional features (e.g. honey yield), it is still widely produced as ornamental and planting material in commercial nurseries. We do not recommend this species for planting in wooded and afforested areas. Where possible, we suggest introducing native black cherry or other native species of trees and shrubs that can successfully replace an unwanted stranger from overseas.
Źródło:
Zagadnienia Doradztwa Rolniczego; 2022, 109, 3; 48-63
1232-3578
2719-8901
Pojawia się w:
Zagadnienia Doradztwa Rolniczego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Graphs with Unique Maximum Packing of Closed Neighborhoods
Autorzy:
Božović, Dragana
Peterin, Iztok
Powiązania:
https://bibliotekanauki.pl/articles/32304193.pdf
Data publikacji:
2022-08-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
unique maximum packing
closed neighborhoods
trees
Opis:
A packing of a graph G is a subset P of the vertex set of G such that the closed neighborhoods of any two distinct vertices of P do not intersect. We study graphs with a unique packing of the maximum cardinality. We present several general properties for such graphs. These properties are used to characterize the trees with a unique maximum packing. Two characterizations are presented where one of them is inductive based on five operations.
Źródło:
Discussiones Mathematicae Graph Theory; 2022, 42, 3; 779-797
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
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