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Wyświetlanie 1-15 z 31
Tytuł:
Assessment of Pollution Risk Mapping Methods in an Eastern Mediterranean Catchment
Autorzy:
Michalopoulos, D.
Dimitriou, E.
Powiązania:
https://bibliotekanauki.pl/articles/124225.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
vulnerability mapping
pollution risk mapping
groundwater pollution
COP
DRASTIC
Opis:
The protection and preservation of good groundwater quality is of critical importance worldwide, nowadays. Increasing urbanization, economic development and agricultural activities, combined with limited precipitation contribute to the quantitative and qualitative degradation of groundwater resources, especially in the eastern Mediterranean region. For this purpose, a series of actions are implemented including groundwater vulnerability mapping that can depict prone to pollution aquifers which need protection and/or restoration measures. In this study, the efficiency of two well-known methodologies (COP and DRASTIC) for groundwater vulnerability and pollution risk mapping was assessed in the Sperchios river basin. The vulnerability and pollution risk maps of the two methodologies were spatially compared to each other and the observed similarities and differences were discussed and explained. The output of the study shows that in the particular geoenvironmental conditions DRASTIC method performs better than the COP, particularly in the lowland, porous media aquifer.
Źródło:
Journal of Ecological Engineering; 2018, 19, 1; 55-68
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of groundwater vulnerability mapping methods for sustainable water resource management: An overview
Autorzy:
Moges, Simeneh Shiferaw
Dinka, Megersa Olumana
Powiązania:
https://bibliotekanauki.pl/articles/2073742.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
aquifer vulnerability
groundwater
intrinsic vulnerability
specific vulnerability
vulnerability assessment method
Opis:
Groundwater is a vital resource for domestic, agricultural, and industrial activities, as well as for ecosystem services. Despite this, the resource is under significant threat, due to increasing contamination from anthropogenic activities. Therefore, to ensure its reliability for present and future use, effective management of groundwater is important not only in terms of quantity (i.e. abstraction) but also quality. This can be achieved by identifying areas that are more vulnerable to contamination and by implementing protective measures. To identify the risk and delineate areas that are more exposed to pollution, various groundwater vulnerability assessment techniques have been developed across the globe. This paper presents an overview of some of the commonly used groundwater vulnerability assessment models in terms of their unique features and their application. Special emphasis is placed on statistical methods and overlay-index techniques. The assessment of the literature shows that statistical methods are limited in application to the assessment of groundwater vulnerability to pollution because they rely heavily on the availability of sufficient and quality data. However, in areas where extensive monitoring data are available, these methods estimate groundwater vulnerability more realistically in quantitative terms. Many works of research indicate that index-overlay methods are used extensively and frequently in groundwater vulnerability assessments. Due to the qualitative nature of these models, however, they are still subject to modification. This study offers an overview of a selection of relevant groundwater vulnerability assessment techniques under a specific set of hydro-climatic and hydrogeological conditions.
Źródło:
Journal of Water and Land Development; 2022, 52; 186--198
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The structure of Volume III of the National Atlas of Lithuania and techniques of cartographic visualization
Autorzy:
Česnulevičius, Algimantas
Šutinienė, Loreta
Krikščiūninė, Vigilija
Svilienė, Rima
Mačiulevičiūtė-Turiene, Neringa
Bautrėnas, Artūras
Beconytė, Giedrė
Ovodas, Donatas
Bevainis, Linas
Powiązania:
https://bibliotekanauki.pl/articles/92480.pdf
Data publikacji:
2019
Wydawca:
Oddział Kartograficzny Polskiego Towarzystwa Geograficznego
Tematy:
national atlas
social phenomena
economic phenomena
structure of atlas
mapping methods
Opis:
National atlases provide comprehensive information about nature, population, social and economic situation of the country. In 2017 the process of compiling and publishing the National Atlas of Lithuania (Lietuvos Nationalinis Atlasas) was finished. The goal of the authors is: in the context of the whole National Atlas to present a thorough analysis of the structure of content and cartographic visualization methods of Volume III. This volume focusses on social and economic phenomena in Lithuania. The authors discuss the principles of compiling the whole National Atlas of Lithuania and presents its structure in a concise manner. Following the classification of traditional mapping methods, specific examples of mapping in Volume III are presented, advantages of mapping techniques are discussed and the structural analysis of mapping methods is also conducted. The conclusions and the discussion part present the problems encountered while compiling Volume III as well as solutions to them.
Źródło:
Polish Cartographical Review; 2019, 51, 1; 19-27
2450-6974
Pojawia się w:
Polish Cartographical Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hybrid optimisation of added value with Value Stream Mapping and Methods-Time Measurement
Autorzy:
Kuhlang, P.
Minichmayr, J.
Sihn, W.
Powiązania:
https://bibliotekanauki.pl/articles/1429368.pdf
Data publikacji:
2008
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
value stream mapping
MTM
methods times measurement
productivity
added value optimization
Opis:
This paper is about a new methodical approach of the joint and simultaneous application of Value Stream Mapping and Methods-Time Measurement (MTM). The focus of Value Stream Mapping is the alignment and combination of individual processes to form a continuous, efficient value stream through the organisation (macro consideration). MTM provide an exact determination of times and focuses on executions of individual tasks and working places (micro consideration). A hybrid optimisation of added value originates from the reasonable and useful combination of Value Stream Mapping and Methods-Time Measurement for increasing productivity, reducing lead time and exact determination of times.
Źródło:
Journal of Machine Engineering; 2008, 8, 2; 23-32
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Value stream mapping in the process of knowledge exchange while maintaining data security in a manufacturing company
Autorzy:
Żywiołek, Justyna
Powiązania:
https://bibliotekanauki.pl/articles/103973.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
data stream mapping methods
data management
data analysis
information
metody mapowania strumieni danych
zarządzanie danymi
analiza danych
informacja
Opis:
The article presents methods of mapping data, information and knowledge value stream in order to identify the flow of key processes and to return knowledge exchange in the examined company. One large production company was audited. The amount of incoming to the company and processing information is so large that it must implement methods to improve their flow. Problems with knowledge exchange associated with high rotation contributed to analyzing the problem.
Źródło:
Quality Production Improvement - QPI; 2020, 2, 1; 11-18
2657-8603
Pojawia się w:
Quality Production Improvement - QPI
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multimedia-cartographic internet service of the cultural heritage on the Puszcza Bukowa area
Autorzy:
Ostrowski, Błażej
Powiązania:
https://bibliotekanauki.pl/articles/43349307.pdf
Data publikacji:
2022
Wydawca:
Poznańskie Towarzystwo Przyjaciół Nauk
Tematy:
multimedia cartography
web application
Puszcza Bukowa
online map
leaflet
cultural heritage
mapping methods
BDT10k
GeoJson
User Centred Design
protected area
Opis:
The main objective of this research was to design a multimedia website with a collection of thematic maps to show the values of cultural heritage sites in the “Puszcza Bukowa” Forest (Szczecin Landscape Park “Beech Forrest”) for public and expert users. In the research, the cartographic method was used together with User Centred Design, geo-information operations on BDOT10k data, and JavaScript programming using the Leaflet library. In addition to the chamber work, field research was carried out in several cartographic and geo-information applications to obtain materials for multimedia. The research process consisted of four stages:conceptual, preparatory, execution and publication of the completed service. The result of the research became a multimedia-cartographic web service, an indication that a properly designed and coded collection of spatial information can significantly affect the dissemination of cultural knowledge in protected areas.
Źródło:
Badania Fizjograficzne Seria A - Geografia Fizyczna; 2022, 13 (73); 155-166
2081-6014
Pojawia się w:
Badania Fizjograficzne Seria A - Geografia Fizyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of remote sensing methods in geological mapping
Autorzy:
Graniczny, M.
Powiązania:
https://bibliotekanauki.pl/articles/2065882.pdf
Data publikacji:
2005
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
geological mapping
photogeology
remote sensing
Opis:
Aerial photographs are a source of geological information that may be unobtainable elsewhere. If the fullest use is to be made of this information for the purpose of geological mapping, there must be a planned integration of the photogeological work with the field and laboratory investigations. The appearance of the first satellites for civil purposes on the beginning of the 1970s (such as ERTS – Landsat series), of most land areas of the Earth has provided new opportunity for photogeologists. Many areas can now be studied and mapped geologically for which neither adequate maps nor vertical aerial photograps were available. The advantages of the present satellite systems and examples of their application by specialists of the Polish Geological Institute are presented in this paper. Nowadays, it is practically impossible to imagine performing geological mapping without application of remote sensing data and analysis. Development of new technologies is very fast and new borne techniques are coming like permanent scatter interferometry, laser scanning etc. However, we should always remember, that they are only very useful tools to help geologists in their field mapping art and practise.
Źródło:
Przegląd Geologiczny; 2005, 53, 10/2; 907-912
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Comparison of Small Area Estimation Methods for Poverty Mapping
Autorzy:
Guadarrama, María
Molina, Isabel
Rao, J. N. K.
Powiązania:
https://bibliotekanauki.pl/articles/465671.pdf
Data publikacji:
2016
Wydawca:
Główny Urząd Statystyczny
Tematy:
area level model
non-linear parameters
empirical best estimator
hierarchical Bayes
poverty mapping
unit level models
Opis:
We review main small area estimation methods for the estimation of general nonlinear parameters focusing on FGT family of poverty indicators introduced by Foster, Greer and Thorbecke (1984). In particular, we consider direct estimation, the Fay-Herriot area level model (Fay and Herriot, 1979), the method of Elbers, Lanjouw and Lanjouw (2003) used by the World Bank, the empirical Best/Bayes (EB) method of Molina and Rao (2010) and its extension, the Census EB, and finally the hierarchical Bayes proposal of Molina, Nandram and Rao (2014). We put ourselves in the point of view of a practitioner and discuss, as objectively as possible, the benefits and drawbacks of each method, illustrating some of them through simulation studies.
Źródło:
Statistics in Transition new series; 2016, 17, 1; 41-66
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Accuracy Analysis Comparison of Supervised Classification Methods for Mapping Land Cover Using Sentinel 2 Images in the Al‑Hawizeh Marsh Area, Southern Iraq
Autorzy:
Alwan, Imzahim A.
Aziz, Nadia A.
Powiązania:
https://bibliotekanauki.pl/articles/1838006.pdf
Data publikacji:
2021
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
land cover mapping
Sentinel 2
supervised classification
maximum likelihood
Support Vector Machine (SVM)
confusion matrix
Opis:
Land cover mapping of marshland areas from satellite images data is not a simple process, due to the similarity of the spectral characteristics of the land cover. This leads to challenges being encountered with some land covers classes, especially in wetlands classes. In this study, satellite images from the Sentinel 2B by ESA (European Space Agency) were used to classify the land cover of Al Hawizeh marsh/Iraq Iran border. Three classification methods were used aimed at comparing their accuracy, using multispectral satellite images with a spatial resolution of 10 m. The classification process was performed using three different algorithms, namely: Maximum Likelihood Classification (MLC), Artificial Neural Networks (ANN), and Support Vector Machine (SVM). The classification algorithms were carried out using ENVI 5.1 software to detect six land cover classes: deep water marsh, shallow water marsh, marsh vegetation (aquatic vegetation), urban area (built up area), agriculture area, and barren soil. The results showed that the MLC method applied to Sentinel 2B images provides a higher overall accuracy and the kappa coefficient compared to the ANN and SVM methods. Overall accuracy values for MLC, ANN, and SVM methods were 85.32%, 70.64%, and 77.01% respectively.
Źródło:
Geomatics and Environmental Engineering; 2021, 15, 1; 5-21
1898-1135
Pojawia się w:
Geomatics and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of methods used for mapping the geometry of underground spatial (3D) structures in the course of revitalisation
Znaczenie i ocena metod odwzorowania geometrycznej struktury przestrzennej podziemnych obiektów zabytkowych w procesie ich rewitalizacji
Autorzy:
Wieja, T.
Powiązania:
https://bibliotekanauki.pl/articles/119103.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Geometrii i Grafiki Inżynierskiej
Tematy:
geometry
mapping
spatial structure
3D
underground objects
graphic recording
revitalization
geometria
mapowanie
struktura przestrzenna
obiekty podziemne
nagranie graficzne
rewitalizacja
Opis:
The study provides a systematic description of various geometries of underground structures, giving examples of traditional and computer-assisted methods used for recording the geometry of underground structures. The methods enable the reconstruction of the structures' geometry and development of detailed drawings, a prerequisite for effective revitalisation and stabilisation old underground structures. Underlying the selection of mapping method is the analysis of the current conditions on the site, definition of potential hazards and the objectives of the restructuring programme.
W artykule zdefiniowano systematykę geometrii ustrojów podziemnych oraz przedstawiono przykłady wykorzystania tradycyjnych i komputerowych metod zapisu geometrycznej struktury przestrzennej obiektów podziemnych. Zastosowane metody pozwalają na odtworzenie geometrii obiektu podziemnego oraz opracowanie szczegółowych rysunków stanowiących podstawę procesu rewitalizacji i zabezpieczania podziemnych obiektów zabytkowych.
Źródło:
Journal Biuletyn of Polish Society for Geometry and Engineering Graphics; 2016, 28; 33-41
1644-9363
Pojawia się w:
Journal Biuletyn of Polish Society for Geometry and Engineering Graphics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Empirical methods of reducing the observations in geodetic networks
Autorzy:
Kadaj, R.
Powiązania:
https://bibliotekanauki.pl/articles/145336.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
odwzorowanie kartograficzne
obserwacja geodezyjna
mapowanie
cartographic mapping
reducing of geodetic observations
empirical methods of reducing observations
mapping of long geodesics
Opis:
The paper presents empirical methodology of reducing various kinds of observations in geodetic network. A special case of reducing the observation concerns cartographic mapping. For numerical illustration and comparison of methods an application of the conformal Gauss-Krüger mapping was used. Empirical methods are an alternative to the classic differential and multi-stages methods. Numerical benefits concern in particular very long geodesics, created for example by GNSS vectors. In conventional methods the numerical errors of reduction values are significantly dependent on the length of the geodesic. The proposed empirical methods do not have this unfavorable characteristics. Reduction value is determined as a difference (or especially scaled difference) of the corresponding measures of geometric elements (distances, angles), wherein these measures are approximated independently in two spaces based on the known and corresponding approximate coordinates of the network points. Since in the iterative process of the network adjustment, coordinates of the points are systematically improved, approximated reductions also converge to certain optimal values.
Źródło:
Geodesy and Cartography; 2016, 65, 1; 13-40
2080-6736
2300-2581
Pojawia się w:
Geodesy and Cartography
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fourier-like methods for equations with separable variables
Autorzy:
Przeworska-Rolewicz, Danuta
Powiązania:
https://bibliotekanauki.pl/articles/729392.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
algebraic analysis
commutative algebra with unit
Leibniz condition
logarithmic mapping
antilogarithmic mapping
right invertible operator
sine mapping
cosine mapping
initial value problem
boundary value problem
Fourier method
Opis:
It is well known that a power of a right invertible operator is again right invertible, as well as a polynomial in a right invertible operator under appropriate assumptions. However, a linear combination of right invertible operators (in particular, their sum and/or difference) in general is not right invertible. It will be shown how to solve equations with linear combinations of right invertible operators in commutative algebras using properties of logarithmic and antilogarithmic mappings. The used method is, in a sense, a kind of the variables separation method. We shall obtain also an analogue of the classical Fourier method for partial differential equations. Note that the results concerning the Fourier method are proved under weaker assumptions than these obtained in [6] (cf. also [7, 8, 11]).
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2009, 29, 1; 19-42
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interactive mapping using range sensor data under localization uncertainty
Autorzy:
Vieira, P.
Ventura, R.
Powiązania:
https://bibliotekanauki.pl/articles/950808.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
2D mapping
interactive interface
ICP
geometric constraint analysis
iterative methods
Opis:
Several methods have been proposed in the literature to address the problem of automatic mapping by a robot using range scan data, under localization uncertainty. Most scan matching methods rely on the minimization of the matching error among individual range scans. However, uncertainty in sensor data often leads to erroneous matching, hard to cope with in a purely automatic approach. This paper proposes a semi-automatic approach, denoted interactive mapping, involving a human operator in the process of detecting and correcting erroneous matches. Instead of allowing the operator complete freedom in correcting the matching in a frame by frame basis, the proposed method facilitates the adjustment along the directions with more ambiguity, while constraining the others. Experimental results using LIDAR data are presented to validate empirically the approach, together with a preliminary user study to evaluate the benefits of the approach.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2013, 7, 1; 47-53
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Acoustic Intensity Imaging Methods for in-situ Wave Propagation
Autorzy:
Weyna, S.
Powiązania:
https://bibliotekanauki.pl/articles/177914.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
scientific visualization
acoustic mapping
wave propagation
sound intensity
noise control
Opis:
In the paper the author has described the visualization methods in acoustic flow fields and show how these methods may assist scientists to gain understanding of complex acoustic energy flow in real-life field. A graphical method will be presented to determine the real acoustic wave distribution in the flow field. Visualization of research results, which is unavailable by conventional acoustics metrology, may be shown in the form of intensity streamlines in space, as a shape of floating acoustic wave and intensity isosurface in three-dimensional space. In traditional acoustic metrology, the analysis of acoustic fields concerns only the distribution of pressure levels (scalar variable), however in a real acoustic field both the scalar (acoustic pressure) and vector (the acoustic particle velocity) effects are closely related. Only when the acoustic field is described by both the potential and kinetic energies, we may understand the mechanisms of propagation, diffraction and scattering of acoustic waves on obstacles, as a form of energy image. This attribute of intensity method can also validate the results of CFD/CAA numerical modeling which is very important in any industry acoustic investigations.
Źródło:
Archives of Acoustics; 2010, 35, 2; 265-273
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mapping the Areas of Research on Intellectual Capital Throughout a Period of Dynamic Environmental Changes
Autorzy:
Smuda-Kocoń, Marlena
Powiązania:
https://bibliotekanauki.pl/articles/2168371.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
intellectual capital
bibliometric methods
areas of research
Opis:
Theoretical background: Intellectual capital is perceived as a global economy driving factor. Many researchers highlight that it is an ingredient improving the functional gear of almost any organisation. Some voices have simultaneously appeared in scientific discussions claiming that the concept of intellectual capital management may not be fully applicable, either in conditions of economic downturn or during turbulent changes. A whole spectrum of external factors then come to the floor, affecting the situation of a company, while the periods of economic perturbations discourage investments in human resources and hamper HR initiatives. Therefore, in these changing economic conditions, a question arises about the rationale for and the directions of the development on the research on intellectual capital, and the concept itself undergoes a practical verification of suitability and usefulness. This is a particularly interesting field of research because the transformations, which take place in the environment of enterprises, create specific expectations, which should be met within the framework of ongoing research projects on the intellectual capital.Purpose of the article: The aim of this article is to identify the dominant topical trends and networks of research directions in the subject of intellectual capital and their changes over time. The study attempts to illustrate these changes.Research methods: Having employed the text mining method, nearly 5,000 scientific articles on intellectual capital were analysed. Consequently, this extensive literature review enabled mapping of the network of links among the research directions in this area.Main findings: The results of the study have provided a fairly deep insight into the trends in the research on intellectual capital over the years. The results also reflect the vastness of the subject and the scope of the issues addressed over the past and present years. The interest in the concept of intellectual capital management continues and the dynamics of changes in the environment of the modern enterprise is not at all insignificant. The clusters, identified in the research on intellectual capital, have been opening new theoretical, pragmatic and methodological horizons. The analysis, carried out within the study network, confirmed the multifaceted nature of the network of research directions in the area of intellectual capital. In addition, the new research trends, which have been emerging in this area, clearly respond both to the dynamic changes in the business environment and to the doubts about the scale of activities, undertaken with regard to the intellectual capital management. Thus, in this situation, the periods of crisis and instability appear on one hand as a serious threat to the issue of intellectual capital management, while on the other, they can be perceived as an opportunity to renew the existing management concepts.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia; 2022, 56, 2; 113-129
0459-9586
2449-8513
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 31

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