Wyniki wyszukiwania - Biblioteka Nauki

1

Control flow tracing related to visualization of program execution

100%

Szmal P.

Archiwum Informatyki Teoretycznej i Stosowanej

|

2000

|

tom T. 12, z. 4

301-322

PL

W artykule przedstawiono ogólne zasady wizualizacji przebiegu wykonania programów, w tym - wizualizacji przepływu sterowania. Jako model programu w trakcie wykonania wykorzystano tzw. grafy wykonania programu. Przypomniano pojęcie śladu wykonania i sformułowano podstawowe postulaty poprawnej wizualizacji: zgodności rozpatrywanego globalnie śladu fizycznego przebiegu wykonania ze sladem abstrakcyjnym oraz neutralności semantycznej zmian wprowadzanych do programu w związku z wizualizacją. Przedstawiono schematy modyfikacji tekstów źródłowych programów (określanej jako instrumentacja powierzchniowa), mającej na celu zapewnienie śledzenia operacji rozpatrywanych na poziomie instrukcji, wyrażeń i podwyrażeń, jak też przekazywania sterowania między podprogramami. Na poziomie podwyrażeń ma m. in. zastosowanie uważany przez autora za oryginalny schemat - metoda funkcji separujących (MFS). Schematy podano w wersji dla języka Pascal, wskazując na możliwość ich zastosowania do innych języków, w szczególności C/C++ i Java. Podano przykłady instrumentacji zrealizowanej automatycznie w systemach wizualizacji algorytmów Sanal i Flopvis. Przedyskutowano niektóre aspekty związane z zastosowaniem schematów w charakterystycznych konstrukcjach programowych. Zwrócono uwagę na wrażliwość części metod na zabiegi związane z optymalizacją kodu wynikowego, dokonywaną przez kompilatory. Rozpatrywane zagadnienia są istotne przy tworzeniu zarówno systemów wizualizacji algorytmów i programów, bez wzgledu na ich zastosowanie, jak też i innych programów śledzących różnych typów.

2

Direct visualization methods for track-before-detect algorithms

63%

Mazurek P.

Poznan University of Technology Academic Journals. Electrical Engineering

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2009

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tom No 59

25-34

EN

Track-Before-Detect (TBD) algorithms are very important signal processing and estimation algorithms used for detection signals at very low signal to noise ratio (SNR). Using TBD algorithms signals below noise floor can be successfully detected. In this paper are considered visualization method of TBD algorithm results. It is assumed 2D input space and N-D state space output Chrominance based and joint-less visualization methods are presented.

3

Wolfram demonstrations project platform as a support in teaching

63%

Gorgol I.

Advances in Science and Technology. Research Journal

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2015

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tom Vol. 9, nr 26

143--147

EN

The article presents how Wolfram Demonstrations Project platform can support teaching of a great variety of subjects from very basic up to university level. The Wolfram Demonstrations Project is part of the family of free online services from Wolfram Research. General overview of the platform will be presented as well as a particular usage. The application concerns presenting to students certain numerical methods, namely one-step methods for Cauchy problem for ordinary differential equations.

4

Presentation of Digital Terrain Models of agricultural areas using LIDAR data

51%

Kwoczyńska B. , Piech I. , Sagan W.

Infrastruktura i Ekologia Terenów Wiejskich

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2016

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tom nr IV/2

1347--1361

EN

Digital photogrammetry is one of the intensively developing areas of technical sciences. Increasing participation in the surveying works have digital devices and solutions giving new possibilities in creation of the appropriate map elements and models as well. A particular role to play has the laser scanning technology allowing to present surveyed space or area in the 3D form. Digital Terrain Models for agricultural areas obtained on its basis may be presented in different ways using professional software. Due to the fact, that in recent years almost the entire Poland was covered with laser scanning, collecting information about the Earth’s surface in the form of a cloud of points with high accuracy is a relatively fast process and the results of their elaboration are widely used in many fields. The paper presents the methods of Digital Terrain Models visualization of agriculture areas for three different objects created on the basis of data derived from airborne laser scanning. The study included agricultural locations - two of them (Strzelce Wielkie and Kamionka Wielka) located in the Malopolskie Voivodship, the third - Mątowy Wielkie in Pomorskie Voivodship, in Żuławy. DTM visualizations were prepared in Macrostation, Terrasolid and Surfer 10 software. For the Mątowy Wielkie object the Digital Surface Model (DSM) was created additionally.

5

Visualizing the high-resolution models and microscopic images using web-based systems

51%

Dudek K. J. , Bożek O.

Computer Methods in Materials Science

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2015

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tom Vol. 15, No.3

427-434

EN

Despite the ongoing automation of image processing and analysis, the need of manual browsing, i. e. visual examination has not diminished. The following article presents a dynamic and highly efficient method of presenting and streaming the large resolution images, using the Linux web-based front-end, built on top of the IIP Image library and tools. This kind of approach solves the problem of local storage and duplication of results, as well as allows a wider group of users to browse and annotate the images. The central image repository, dedicated for managing significant amount of data, has a variety of potential applications, both in research and in teaching. Taking a step sideways, this paper is meant to walk through the initial work and plans related to applying IIP Image in metallurgical imaging, current applications on other fields and suggested teaching scenarios. The system description is followed by a brief performance analysis.

PL

Mimo szybko postępującego rozwoju automatyzacji przetwarzania obrazów, w dalszym ciągu zachodzi potrzeba analizy wizualnej. Praca z obrazami oznacza jednakże przetwarzanie danych o znacznej objętości. Metody generowania, zapisu i przechowywania obrazów są uznawane za detal techniczny, co prowadzi do wykorzystywania nieoptymalnych i nieprzenośnych narzędzi, utrudniających wymianę i prezentowanie informacji w formie obrazów. Poprawa tej sytuacji umożliwiłaby łatwiejszą współpracę (między zespołami i oprogramowaniem), otwierając przy okazji szereg dodatkowych możliwości. Podejmując temat związany' z technicznym zapleczem działalności badawczej, niniejsza praca przedstawia sugerowane rozwiązanie tej zaniedbanej kwestii, oferując system oparty na serwerze obrazów IIP Image, konwerterze VIPS i platformie Apache w środowisku Linux. Opisowi systemu towarzyszy dyskusja nad responsywnością oraz przydatnością w dydaktyce.

6

Wizualizacja w dyskursie perswazyjnym (na materiale prasy młodzieżowej)

51%

SKOWROŃSKA M.

Stylistyka

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2013

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tom 22

197-212

EN

Persuasive discourse observed in youth magazines occurs not only on the verbal level. The article shows the role that visualization plays in the context of persuasive discourse. The main tool of influence is language, however the composition of youth magazines, inwhich the visual component dominates over the verbal layer, is deliberate. The composition has been adjusted to the needs and expectations of the teenage target reader, whose perceptive abilities were shaped mostly by visual mass culture. For the magazine recipient photography is the component which articulates the most, subsequently to language. Modern magazines have a very expanded visual stratum, actually, in numerous magazines it even overshadows the text. Glossy magazines have a trait of hybridity and their characteristic feature is the possibility to read and watch simultaneously, as the message does not only restrain itself to the text, but is also transmitted through photographs. The new style of communication is thus accompanied by a shift in the text–image affiliation. Photography in the context of persuasive discourse conducted in magazines, plays as significant a role as the verbal constituent. Focusing on the persuasive influence of the visual layer of magazines, the article discusses the role of photographytreated as a supplement of the text, but also as an independent statement.

7

Visual techniques for categorical data in R

51%

Brzezińska J.

Econometrics. Ekonometria. Advances in Applied Data Analytics

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2017

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nr 3 (57)

26-36

EN

Visualization is one of the most important parts of statistical analysis. In this paper we present a new method of multiple bar charts to display the frequencies of data tables split up into conditional relative frequencies of one target variable and the absolute frequencies of the corresponding combinations of the remaining explanatory variables. In this paper we present the R package extracat allowing for new graphical tools: rmp and cpcp plot [Pilhoefer, Unwin 2013]. The first plot uses the a crossover of mosaicplots and multiple barcharts to display the frequencies of a contingency table split up into conditional relative frequencies of one target variable and the absolute frequencies of the corresponding combination of the remaining explanatory variables. It provides a well-structured representation of the data with the possibility of easy interpretation. Another plot presented in the paper is the cpcp plot using parallel coordinates. Sequences of points are used to represent each of the variable categories, while ordering algorithms are applied to represent a hierarchical structure in the dataset.

8

Integration of heterogeneous photogrammetry data for visualization of cultural heritage objects

51%

Markiewicz J. , Zawieska D. , Bujakiewicz A.

Technical Sciences / University of Warmia and Mazury in Olsztyn

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2015

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tom nr 18(1)

37--48

EN

Technologies of digital photogrammetry provide the metric and thematic information for various data bases, including those which are created to visualize and archive the cultural heritage objects. Due to different sizes, shapes, locations and environmental conditions of objects, data is acquired by means of various photogrammetric methods based on aerial and terrestrial digital imagery and laser scanning data. They are also very often integrated with data from other sources. Photogrammetric products dedicated for the cultural heritage are usually collected and integrated in 3D GIS data bases, which are used by various specialists involved in restoration of the historical monuments. The variety of photogrammetric data and possibility of multi criterion spatial data processing and analysis in 3D GIS, allow to reconstruct the accurate terrain topography and 3D models of valuable heritage monuments. In this paper, an integration of various photogrammetric products (created in the past and within the discussed project), used for the needs of visualization of the terrain topography and 3D models of historical buildings and vegetation for the Museum of King Jan III’s Palace at Wilanów area, is presented. The following photogrammetric products were utilized: the orthophotomap of 0.1 m resolution from the Geodetic and Cartographic Documentation Centre (CODGiK), ALS - ISOK data, 3D vector data from stereo digitalization of 0.1 m resolution images, the vegetation layer for the area of the Museum of King Jan III’s Palace at Wilanów, acquired from the 3D data base. In addition, some symbols of missing objects were used from the Google 3D WareHouse.

9

Role of visualization in engineering education

51%

Lis R.

Advances in Science and Technology. Research Journal

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2014

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tom Vol. 8, nr 24

111--118

EN

The article includes an analysis of the results of research on the influence of visualization on the effectiveness of training. It analyzes the application of visualization in engineering education with a particular focus on visual design principles. Examples of the use static and dynamic visualization in multimedia learning in technology and computer science are presented.

10

Wizualizacja w systemach sterowania

51%

Rafiński L. , Grono A.

Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej

|

2007

|

tom Nr 23

93-96

PL

Podano przegląd stosowanych w systemach automatyki typów interfejsów HMI. Przedstawiono także technologię wykorzystywaną do produkcji ekranów dotykowych. Omówiono ponadto rolę systemów HMI w procesie sterowania a przydatność tego rodzaju systemów przedstawiono na przykładzie interfejsu zaprojektowanego dla stacji uzdatniania wody.

EN

The paper contains a review of HMI systems used in industry control systems. Touch panel technology is also presented. The importance of HMI systems is discussed.

11

Wizualizacja trójwymiarowych pól skalarnych z wykorzystaniem technik renderingu objętościowego

51%

Głowacki M. , Czubernat A.

Czasopismo Techniczne. Mechanika

|

2011

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tom R. 108, z. 4-M/1

147-155

PL

W artykule przedstawiono wyniki badań związanych z opracowaniem i implementacją algorytmu renderingu objętościowego, który umożliwia uzyskanie obrazów trójwymiarowych pól skalarnych w czasie rzeczywistym. Zbudowany system komputerowy wyposażony został w interaktywny interfejs użytkownika oraz narzędzia pozwalające na swobodną manipulację wyświetlanymi danymi. Aplikacja realizuje główne założenia dzięki użyciu akceleracji sprzętowej oferowanej przez programowalne układy graficzne. Obraz generowany jest z wykorzystaniem masywnej równoległości, co pozwala na jego wyświetlanie w czasie rzeczywistym oraz stosowanie technik kosztownych obliczeniowo. Zastosowane metody i ich optymalizacje umożliwiają intuicyjną oraz efektywną analizę danych wolumetrycznych.

EN

The paper deals with development and implementation of volume rendering algorithm that allows the creation of images of three-dimensional scalar fields in real time. The developed computer system is equipped with an interactive user interface and tools allowing for the free manipulation of displayed data. The application executes main objectives through the use of hardware acceleration provided by programmable graphics chips. Image is generated using the massive parallelism, which allows to display it in real time and the use of computationally expensive techniques. The methods used and their optimizations enable an intuitive and efficient analysis of volumetric data.

12

From computer art to ambient displays

51%

Hutzler G. , Gortais B.

Machine Graphics and Vision

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2004

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tom Vol. 13, No. 1/2

181-191

EN

We report in this paper an original experience of a collaboration between a computer scientist, G. Hutzler, and a painter, B. Gortais, This experience started with the development of the computer-art work called " the Garden of Chances", which consists in a visual and sonorous representation of the meteorological conditions of a distant place. We then evaluated the efficiency of such a representation to convey useful information and to allow users to make appropriate decisions.

13

Kohonen self-organizing maps for symbolic objects

51%

Dudek A. , Chair of Econometrics and Informatics U. o. E.

Acta Universitatis Lodziensis. Folia Oeconomica

|

2008

|

tom 216

EN

Visualizing data in the form of illustrative diagrams and searching, in these diagrams, for structures, clusters, trends, dependencies etc. is one of the main aims of multivariate statistical analysis. In the case of symbolic data (e.g. data in form of: single quantitative value, categorical values, intervals, multi-valued variables, multi-valued variables with weights), some well-known methods are provided by suitable 'symbolic' adaptations of classical methods such as principal component analysis or factor analysis. An alternative visualization of symbolic data is obtained by constructing a Kohonen map. Instead of displaying the individual items k = 1,..., n by n points or rectangles in a two dimensional space, the n items are first clustered into a number m of mini-clusters and then these mini-clusters are assigned to the vertices of a rectangular lattice of points in the plane such that 'similar' clusters are represented by neighbouring vertices in the lattice.

14

Impact of Clustering Parameters on the Efficiency of the Knowledge Mining Process in Rule-based Knowledge Bases

51%

Nowak-Brzezińska A. , Rybotycki T.

Schedae Informaticae

|

2016

|

tom Vol. 25

85--101

EN

In this work the subject of the application of clustering as a knowledge extraction method from real-world data is discussed. The authors analyze an influence of different clustering parameters on the quality of the created structure of rules clusters and the efficiency of the knowledge mining process for rules / rules clusters. The goal of the experiments was to measure the impact of clustering parameters on the efficiency of the knowledge mining process in rulebased knowledge bases denoted by the size of the created clusters or the size of the representatives. Some parameters guarantee to produce shorter/longer representatives of the created rules clusters as well as smaller/greater clusters sizes.

15

3D visualization of commutator motor

51%

Matuszak Ł. , Pietrowski W.

Poznan University of Technology Academic Journals. Electrical Engineering

|

2007

|

tom No 56

69-79

EN

In this paper the visualization of commutator motor construction has been presented. Special attention has been paid to present detailed features e.g. dimensions, surface and material structure as real as possible.

16

The types of computer graphics and their application at different levels of knowledge

51%

Makarewicz A. , Korga S. , Rosa W.

Advances in Science and Technology. Research Journal

|

2015

|

tom Vol. 9, nr 28

149--152

EN

In this article we introduce the concept of computer graphics and graphical application C.a.R (Compasses and Ruler), its basic commands and several examples associated with the geometry. This subject is at all levels of knowledge in various stages of development. We will present the C.a.R possibilities that can be used in secondary schools, high schools and colleges. We show function graphs of varying degrees of difficulty that are too complicated for the human imagination.

17

BIG DATA I WIZUALIZACJA ”KILKA” UWAG O PROBLEMACH I DYLEMATACH WSPÓŁCZESNEGO HISTORYKA HISTORIOGRAFII

51%

Radomski A.

Historia@Teoria

|

2017

|

tom 1

|

nr 3

169-181

EN

The article discusses the main problems of the contemporary history of historiography. The author states that the greatest problem of historiography in the 21st century is big data. The next important issue are the test methods for big data. One of the paradigms, which att empts to explore the world of big data, is digital history. Therefore, the methods of digital history are presented, including its primary method which is data visualization. Finally, the author argues that big data should become the main subject of study of the modern history of historiography.

18

Visual communication in the age of digital media

51%

Penkowska G.

Problemy Opiekuńczo-Wychowawcze

|

2020

|

tom 592(7)

29-36

EN

The aim of the article is to popularize and attempt to reflect on the phenomenon of visuality in various areas of life in the age of new media. The first part of the text introduces the meaning of the term 'visualization' and shows various dimensions of visuality, which is an attempt to validate the assumption about the leading role of image in the modern world. The next part presents the main characteristics of visuality. Visuality is a mean of communication, description of events and expressing emotions. Visual objects affect both the cognitive and emotional sphere, which is the reason behind the constant increase of importance of the message with their participation. The last part of the article contains analysis of the positive and negative aspects of visuality. The dual nature of modern visual messages is associated with the specifics of digital media. The ease of creating and sending images in the era of new media leads to overload of the space with visual objects.

19

Visualization of nonlocality in coupled map latices

51%

Janowicz M. , Kaleta J. , Wrzeciono P. , Zembrzuski A. , Orłowski A.

Machine Graphics and Vision

|

2016

|

tom Vol. 25, No. 1/4

13--25

EN

Numerical simulations of coupled map lattices with various degree of nonlocality have been performed. Quantitative characteristics of recently introduced for local coupling have been applied in the nonlocal case. It has been attempted to draw qualitative conclusions about nonlocality from the emerging pictures.

20

Multidimensional Scaling for Symbolic Interval Data

51%

Dudek A. , Chair of Econometrics and Informatics U. o. E.

Acta Universitatis Lodziensis. Folia Oeconomica

|

2009

|

tom 228

PL

Podstawowym celem skalowania wielowymiarowego jest przedstawienie relacji między obiektami w przestrzeni wielowymiarowej jako odległości w przestrzeni 2- lub 3- wymiarowej. Dane wejściowe do procedur skalowania wielowymiarowego to zazwyczaj symetryczna macierz kwadratowa wskazująca na relacje (podobieństwa lub niepodobieństwa) pomiędzy obiektami pewnego zbioru. Istnieje wiele technik klasycznego skalowania wielowymiarowego, jednak wszystkie z nich wymagają aby w poszczególnych komórkach tej macierzy znajdowały się pojedyncze wartości liczbowe. Denoeux and Masson (2002) zaproponowali rozszerzenie klasycznego skalowania wielowymiarowego na dane symboliczne w postaci przedziałów liczbowych. Danymi wejściowymi do opracowanego przez nich algorytmu 1NTERSCAL jest tabela zawierająca minimalne i maksymalne odległości pomiędzy hiperprostopadłościanami reprezentującymi obiekty. Takie same podejście występuje w algorytmach SYMSCAL i I-SCAL zaproponowanych przez Groenena i in. (2005). W artykule przedstawiony zostały najważniejsze algorytmy skalowania wielowymiarowego dla danych symbolicznych w postaci przedziałów liczbowych oraz przykłady ich zastosowania dla danych symbolicznych pochodzących z repozytorium http://www.ceremade.dauphine.fr/~touati/sodas-pagegarde.htm.

EN

The aim of multidimensional scaling is to represent dissimilarities among objects in high dimensional space as distances in low (usually 2- or 3-) dimensional space. Usually the input to multidimensional scaling procedure is a square, symmetric matrix indicating relationships (similarities or dissimilarities) among a set of items. There are many techniques of classical multidimensional scaling but all under assumption that each entry in relationship matrix is single numeric value. Denoeux and Masson (2002) have proposed to extend multidimensional scaling onto symbolic interval data. The input to theirs INTERSCAL algorithm is interval dissimilarity table containing minimum and maximum distance between hyper-rectangles representing objects. The same approach is used in SYMSCAL and I-SCAL algorithms proposed by Groenen et al. (2005). Article presents main algorithms of multi-dimensional scaling for symbolic data in form of intervals along with some examples on datasets taken from symbolic data repository (http://www.ceremade.dauphine.fr/~touati/sodas-pagegarde.htm).