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Tytuł:
Comparison of Effective Coverage Calculation Methods for Image Quality Assessment Databases
Autorzy:
Buczkowski, M.
Stasiński, R.
Powiązania:
https://bibliotekanauki.pl/articles/225967.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Image Quality Assessment
IQA database analysis
effective coverage
Opis:
This article provides a comparison of a three methods that can be used for calculating effective coverage of image quality assessment database. The aim of this metric is to show how well the database is filled with variety of images. For each image in the database the Spatial Information (SI) and Colorfulness (CF) metric is calculated. The area of convex hull containing all the points on SI x CF plane is indication of total coverage of the database, but it does not show how efficiently this area is utilized. For this purpose an effective coverage was introduced. An analysis is performed for 16 databases - 13 publicaly available and 3 artificial created for the purpose of showing advantages of the effective coverage.
Źródło:
International Journal of Electronics and Telecommunications; 2018, 64, 3; 307-313
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Consistency of the presentation of forests on topographic maps
Autorzy:
Cebrykow, Paweł
Petrzak, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/946918.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Topographic maps
change in forest coverage
forests
Roztocze
Opis:
This article analyses the accuracy of the presentation of forests on Polish topographic maps. Four test polygons were selected, differing in forest coverage and spatial distribution of forest areas in order to improve the objectivity of the study. All the polygons were located in Roztocze. Four maps were tested: System 1965 (1:50 000), GUGIK80 (1:100 000), PUWG92 (1:10 000), and VMap L2 (1:50 000). The forest areas from the maps and aerial photographs were vectorised; then the photographs were converted into an orthophotomap that constituted the reference material. All materials were coherent in terms of content validity. After vectorising the range of the forests, sampling was conducted within the hexagonal fields. A comparison of the obtained values provided the basis for maps that presented the errors. The analysis permitted several conclusions to be drawn, generally stating that the credibility of maps within the scope of presenting forest areas depends on the scale and purpose of the map, and that any analyses based on these maps should assume that the results should have higher tolerance levels.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2020, 24, 4; 202-217
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The natural framing of military confl ict news. The 2008 war in Georgia in Resonance , Izvestia and The New York Times
Autorzy:
Basilaia, Ekaterina
McKeever, Robert
Shaw, Donald
Powiązania:
https://bibliotekanauki.pl/articles/471137.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Komunikacji Społecznej
Tematy:
content analysis
media coverage
conflict
Russia
Georgia
newspapers
Opis:
Historically, news organizations located in the heart of confl ict zones have been an im- portant player in informing the public and shaping its understanding of particular issues. To advance research relating to international confl ict coverage the current study analyzed how Georgian, Russian, and American media framed the 2008 war in Georgia. By examining coverage in Izvestia and Reson- ance as well as Th e New York Times — which is an important example of how the confl ict was presented to the American public — this paper elucidates likely determinants of the type of news and events that are prioritized by media producers proximal to the region of confl ict. We fi nd the similarities in confl ict reporting are as interesting as their diff erences.
Źródło:
Central European Journal of Communication; 2013, 6, 1(10); 16-32
1899-5101
Pojawia się w:
Central European Journal of Communication
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Framing the Winter Olympic Games: A Content Analysis of Polish Newspapers Coverage of Female and Male Athletes
Autorzy:
Jakubowska, Honorata
Powiązania:
https://bibliotekanauki.pl/articles/1790817.pdf
Data publikacji:
2017-03-24
Wydawca:
Polskie Towarzystwo Socjologiczne
Tematy:
Winter Olympic Games
press coverage
gender
nation
media framing
Opis:
The aim of this paper is to analyse the media coverage provided by two Polish daily newspapers (Gazeta Wyborcza and Przegląd Sportowy) during the 2014 Sochi Winter Olympic Games according to the athletes’ gender. The paper makes reference to agenda setting theory and media framing and it is based on an analysis of photographs of the games on the front pages and the sporting articles’ main themes. The analysis reveals that the press focused mainly on the Polish medal winners and did not reveal significant differences between women’s and men’s press coverage. Results show that the discourse of nationalism overrode the discourse of gender, the newspapers’ coverage being mainly based on the success of the Polish athletes, regardless of their gender.
Źródło:
Polish Sociological Review; 2017, 197, 1; 67-82
1231-1413
2657-4276
Pojawia się w:
Polish Sociological Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Increasing the efficiency of spraying of orchards
Autorzy:
Gajtkowski, A
Powiązania:
https://bibliotekanauki.pl/articles/65232.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
spraying quality
orchard
orchard coverage
working speed
spraying
efficiency
Opis:
Orchards are sprayed at the agro-technical speed ranging from 4 to 6 km per hour. The research paid attention to the influence of a higher speed reaching 8 km/h on the quality of orchard trees spraying. Applying higher speed causes a labour efficiency increase while spraying and reduces time of treatment performance. However, increasing the speed should not decrease the quality of leaf coverage with the sprayed liquid. The results of the carried out research indicate a possibility of increasing the working speed without deteriorating the quality of spraying in dwarf orchards.
Sady opryskuje się z prędkością agrotechniczną zawierającą się w granicach 4- 6 km/h. Celem pracy było sprawdzenie czy zwiększenie prędkości roboczej opryskiwacza do 8 km/h, nie spowoduje pogorszenia się jakości opryskiwania liści drzew. Większość obecnie stosowanych opryskiwaczy ma urządzenia opryskujące w postaci przystawek wentylatorowych, tradycyjnych z wentylatorami osiowymi lub promieniowymi lub przystawek nowocześniejszych kolumnowych nabudowanych na wentylatory osiowe lub poprzeczne. Tego typu opryskiwacze mogą poruszać się po sadzie z większą prędkością. Zwiększenie prędkości opryskiwania przy zachowaniu stałych parametrów ciśnienia cieczy i wydatku jednostkowego urządzenia opryskującego spowoduje zmniejszenie dawki cieczy na hektar. W związku z tym należy również sprawdzić jaki jest wpływ niższych dawek cieczy na hektar na jakość opryskiwania drzew. Do opryskiwania sadu jabłoniowego karłowego (odmiana Gloster) zastosowano dwa opryskiwacze sadownicze: Pilmet 1014 Sad and Agrola 1000 eco. Podczas wykonywania zabiegu opryskiwaczem Pilmet stosowano dwie prędkości robocze: 5,0 i 8,3 km/h i trzy dawki cieczy na hektar wynoszące: 260, 322 i 535 I/ha. Przy opryskiwaniu opryskiwaczem Agrola stosowano prędkości 5,1 i 8,2 km/h oraz następujące dawki cieczy: 267, 325 i 541 I/ha. Na rycinie 3 przedstawiono średnie wartości pokrycia liści na całym drzewie i na gruncie pod drzewem dla obu stosowanych opryskiwaczy. Przy średnich wartościach pokrycia zaznaczono przedziały ufności. W przypadku opryskiwania opryskiwaczem Pilmet wartości pokrycia przy stosowanych prędkościach roboczych 5,0 km/ h i 8,3 km/h różnią się istotnie, a przy opryskiwaniu opryskiwaczem Agrola przy prędkościach 5,1 km/h i 8,2 km/h nie różnią się istotnie. W każdym przypadku przy zmniejszonych dawkach cieczy tj. 260 I/ha i 267 I/ha wartości stopnia pokrycia w dalszym ciągu osiągają znaczne wartości, średnio na drzewie dla tych dawek cieczy odpowiednio 34,9% i 33%. Przy opryskiwaniu zbóż przyjmuje się, za wystarczające pokrycie powyżej 15%. Zwiększenie prędkości roboczej do 8 km/h jest celowe, ponieważ osiąga się znaczne zwiększenie efektywnej wydajności powierzchniowej - średnio o 60%.
Źródło:
Journal of Plant Protection Research; 2002, 42, 2
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Internet infrastructure and its usage in poland and other european union member states
Autorzy:
Śledziewska, K.
Levai, A.
Zięba, D.
Powiązania:
https://bibliotekanauki.pl/articles/95083.pdf
Data publikacji:
2016
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
internet usage
broadband coverage
broadband speed
internet affordability
NGA
Opis:
One in four of all households in Poland does not have access to the Internet, while in the EU15, the same refers to only one in every six households. In this paper we analyze the Internet infrastructure from both supply (broadband coverage-speed) and demand (usage of Internet by individuals-SMEs) side, as well as the affordability aspect. In particular, we search for biggest gaps of Poland’s Internet infrastructure in comparison to other European Union Member States (EU15 and NMS12). Our empirical analysis is based on European Commission’s and ITU’s databases. Moreover, we provide some recommendations for the government and enterprises exposing the biggest gaps of Poland and emphasizing the beneficial impact of the Next Generation Access networks.
Źródło:
Information Systems in Management; 2016, 5, 1; 131-143
2084-5537
2544-1728
Pojawia się w:
Information Systems in Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identité sociale médiatisée à l’exemple de la presse française et polonaise
Mediatized social identity. The case of the French and Polish press
Autorzy:
Dyoniziak, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/1050599.pdf
Data publikacji:
2015-12-01
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
press discourse
news media
media coverage information
social identity.
Opis:
The article follows the trend of contemporary discursive research by approaching the problem of information media coverage. The main purpose is to describe discursive mechanisms responsible for creating conceptual social space necessary to perception process by individuals of a given society (social identity). The author presents a study of numerous discursive phenomena ordering them according to particular pragmatic objectives of media strategies, such as creating community environment, creating representation of social events, legitimacy of created information. The analysis is based on Polish and French informative press.
Źródło:
Studia Romanica Posnaniensia; 2015, 42, 4; 21-34
0137-2475
2084-4158
Pojawia się w:
Studia Romanica Posnaniensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On two confidence intervals for the correlation coefficient
O dwóch przedziałach ufności dla współczynnika korelacji
Autorzy:
Tarasinska, J.
Powiązania:
https://bibliotekanauki.pl/articles/9709.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Katedra Zastosowań Matematyki i Informatyki
Tematy:
correlation coefficient
interval estimation
coverage probability
confidence interval length
Źródło:
Colloquium Biometricum; 2008, 38
1896-7701
Pojawia się w:
Colloquium Biometricum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sensor Network Deployment Optimization for Improved Area Coverage Using a Genetic Algorithm
Autorzy:
Szklarski, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/1861643.pdf
Data publikacji:
2016
Wydawca:
Wyższa Szkoła Bezpieczeństwa Publicznego i Indywidualnego Apeiron w Krakowie
Tematy:
network of sensors
genetic algorithm
sensors deployment
area coverage
Opis:
Ensuring optimal coverage is a central objective of every sensor deployment plan. Effective monitoring of the environment helps to minimize manpower and time, while enhancing surveillance capability. In this paper, a solution for improved area coverage was presented. A lattice of a pre-defined parameter has been used as an input for the algorithm. For the purpose of the research the blanket deployment strategy has been adopted. Then, a genetic algorithm has been proposed and implemented to find an optimal solution. The proposed approach has been tested and the conclusions have been drawn. The results proved that the proposed genetic algorithm could already provide satisfactory results, usually finding only suboptimal solutions.
Źródło:
Security Dimensions; 2016, 19(19); 150-181
2353-7000
Pojawia się w:
Security Dimensions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Journalists and politicians in television interviews after elections: A redefinition of roles?
Autorzy:
Hordecki, Bartosz
Piontek, Dorota
Powiązania:
https://bibliotekanauki.pl/articles/471353.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Komunikacji Społecznej
Tematy:
political interview
journalism
coverage of politics
journalist-politician relations
Opis:
According to the canons of liberal democracy, both political and media systems constitute two spheres which strongly interact but still are separated and fulfill different aims. The actors belonging to these spheres play specific social roles, due to sets of rules called (respectively) the logic of politics and media logic. Politicians are supposed to create and reshape the world gaining electorate support while the media should show, explain and interpret the world in a way that attracts its audience. The two are expected to compete inside their spheres but not with each other. Today, however, the mediatization of politics and politicization of the media have changed the relationship between politicians and journalists. The aim of the article is to describe the phenomenon of redefinition of roles of the main actors of political communication, using content analysis of television political interviews during an election campaign. Elections create a special situation of mutual interdependence of the two entities as well as the need to achieve their specific goals. The authors weigh up whether the changing formula of TV interviews is an element of a broader phenomenon of competition and trial of taking up control in the process of political communication or just incidental behavior typical for the time of an election.
Źródło:
Central European Journal of Communication; 2014, 7, 2(13); 209-224
1899-5101
Pojawia się w:
Central European Journal of Communication
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Children’s Rights through the Eye of the Pakistani Press: An Analysis of Print Media
Autorzy:
Hassan, Ali Ab Ul
Javed, Zahid
Fazal, Moona
Arshad, Akash
Powiązania:
https://bibliotekanauki.pl/articles/2150826.pdf
Data publikacji:
2022
Wydawca:
Univerzita sv. Cyrila a Metoda. Fakulta masmediálnej komunikácie
Tematy:
Child Rights
Media Responsibility
News Coverage
Newspaper
Social Problems
Opis:
News coverage has a major impact on the interpretation of news events and the response towards these events by public and policy makers. The study intended to investigate the extent of children's rights representation in newspapers in Pakistan. The aim was to determine the coverage, type of the News and level of placement in four selected newspapers (Dawn, The Express Tribune, Jang, and Nawa-i-waqt). A content analysis of 316 news editions of selected samples was conducted over the duration of one year (November 2017 to October 2018). The purpose of content analysis is to provide advocates with a comprehensive basis for how children’s problems are presented in the news. A systematic sampling technique is used for the collection of data. The Nawa-i-waqt newspaper covered the maximum news stories (792 in number) as compared to the other dailies. Furthermore, most of the stories about children were found on the inside pages of newspapers which shows that children’s issues received minimal coverage. This paper argues that the press should take more responsibility by adequately informing children and making them aware, so that the attention of the government and the public can be aimed at tackling child problems in society.
Źródło:
Media Literacy and Academic Research; 2022, 5, 1; 216-229
2585-8726
Pojawia się w:
Media Literacy and Academic Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie przybliżonych metod do oceny niepewności wyniku pomiaru w pomiarach pośrednich
Utilization of the approximate methods to determine the uncertainty of measurement results in indirect measurements
Autorzy:
Otomański, P.
Powiązania:
https://bibliotekanauki.pl/articles/152063.pdf
Data publikacji:
2005
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
współczynnik rozszerzenia
niepewność rozszerzona
prawdopodobieństwo
coverage factor
expanded uncertainty
probability
Opis:
W pracy zaprezentowano wyniki badań błędu oceny współczynnika rozszerzenia metodami przybliżonymi w pomiarach pośrednich. W oparciu o przeprowadzoną analizę dokładności przybliżonych metod oceny niepewności rozszerzonej zaprezentowano zakresy stosowania tych metod, przy przyjętym kryterium nie przekraczania złożonej wartości błędu oceny. Do badań wykorzystano znajomość charakterystyk współczynnika rozszerzenia dla splotu dwóch rozkładów Studenta i dwóch rozkładów jednostajnych.
In the paper the results of examining error evaluation of the coverage factor with approximate methods in indirect measurements are presented. Basing on the method`s accuracy analysis, the range of application of the approximate methods of the expanded uncertainty estimation has been presented; the criterion of not-exceeding a preset value of the error has been implemented. The knowledge of coverage factor characteristics for the convolution of two Student`s distributions and two rectangular distributions was used.
Źródło:
Pomiary Automatyka Kontrola; 2005, R. 51, nr 9, 9; 5-8
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Do combinations of insecticides and acaricides influence spray droplet formation and the interaction with citrus leaves?
Autorzy:
Della Vechia, J.F.
Santos, R.T.
Griesang, F.
Santos, C.M.
Ferriera, M.C.
Andrade, D.J.
Powiązania:
https://bibliotekanauki.pl/articles/2084816.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
contact angle
coverage efficiency
droplet size
surface tension
tank mixture
Opis:
In agriculture, the mixing of pesticides in tanks is a common practice. However, it is necessary to previse possible physical-chemical implications of this practice, which may affect the efficiency of the treatments performed. Therefore, the objective of this study was to evaluate the effects of the addition of acaricide to insecticidal spray mixtures on the formation of spray droplets and the interaction with citrus leaves. The experimental design was totally randomized, in a (2 × 3 + 1) factorial scheme for seven treatments. Factor A corresponded to the spray mixture used (isolate or in the mixture). Factor B corresponded to the insecticides tested (lambda-cyhalothrin + thiamethoxam, phosmet, and imidacloprid) and the control consisted of a spray mixture with spirodiclofen only. Nine replications were performed for characterization of the spray droplet size spectrum and four replications for the analysis of the surface tension and the contact angle. The mixture of pesticides showed positive results in terms of application safety. The addition of acaricide to insecticide spray mixtures reduced the surface tension and contact angle of droplets on the adaxial surface of orange leaves. There was an increment in volume median diameter (VMD), a significant reduction in the volume of droplets with drift-sensitive size and improvement in the uniformity of droplet size. Therefore, the addition of acaricide to an insecticide spray mixture positively influenced spray droplet formation and the interaction with citrus leaves providing better coverage and droplet size fractions with an appropriate size for safe and efficient application.
Źródło:
Journal of Plant Protection Research; 2019, 59, 4; 487-493
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adaptation of Propagation Models to Improve the Coverage Range Prediction of LoRaWAN Technology at 915 MHz in an Urban Environment
Autorzy:
Suarez-Suare, Carlos René
Rueda, Diego F
Timaná-Eraso, Luis Carlo
Leon-Leon, Jose
Powiązania:
https://bibliotekanauki.pl/articles/27311960.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
LoRaWAN
propagation models
Internet of things
urban coverage
fitted model
Opis:
Long Range Wide Area Network (LoRaWAN) technology has established new concepts for long-range wireless communication, being widely used in the implementation of IoT solutions. Therefore, it is crucial to validate the coverage of the signal and to know the distance at which a LoRAWAN communication system can be connected. This document investigates LoRaWAN technology for cases based on urban environments, so it can be used as a guide for those projects that require predicting the connection distance range of a LoRaWAN link. In addition, it serves as a tool for the reader when it comes to predicting the coverage of Long-Range Wide Area Network (LoRaWAN) technology. Measurements were made in a LoRaWAN network deployed in urban environments, where RSSI measurements were made in the city of Bogotá D.C., Colombia. Experimentally RSSI values were compared with four different propagation models at a frequency of 915 MHz in urban environments. The contribution of this work is an adjustment to widely used prediction models, according to the recommendation of the International Telecommunications Union (ITU) ITU-R P.1546, which allows estimating coverage in scenarios with characteristics similar to Bogotá D.C. This allows to know with precision the coverage before implementing the LoRaWAN communications system at 915 MHz. The results of comparing field measurements with fitted propagation models show that the Okumura model is the best predictor of coverage with a minimum error rate.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 4; 733--744
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Poisson Weighted Ishita Distribution: Model for Analysis of Over-Dispersed Medical Count Data
Autorzy:
Para, Bilal Ahmad
Jan, Tariq Rashid
Powiązania:
https://bibliotekanauki.pl/articles/1058917.pdf
Data publikacji:
2020-09-04
Wydawca:
Główny Urząd Statystyczny
Tematy:
compounding model
coverage probability
simulation
count data
epileptic seizure counts
Opis:
A new over-dispersed discrete probability model is introduced, by compounding the Poisson distribution with the weighted Ishita distribution. The statistical properties of the newly introduced distribution have been derived and discussed. Parameter estimation has been done with the application of the maximum likelihood method of estimation, followed by the Monte Carlo simulation procedure to examine the suitability of the ML estimators. In order to verify the applicability of the proposed distribution, a real-life set of data from the medical field has been analysed for modeling a count dataset representing epileptic seizure counts.
Źródło:
Statistics in Transition new series; 2020, 21, 3; 171-184
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
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