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Wyświetlanie 1-15 z 27
Tytuł:
Life cycle of Tonnacypris glacialis (Crustacea: Ostracoda)
Autorzy:
Wojtasik, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/2051832.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
Ostracoda
reproductive strategies
temperature
palaeoecological indicator
Źródło:
Polish Polar Research; 2008, 29, 1; 33-44
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of benefits resulting from the use of computer control systems in precision agriculture
Autorzy:
Rząsa, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/2204517.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
precision agriculture
field mapping
vegetation indicator
geological indicator
precision GPS
rolnictwo precyzyjne
mapowanie pola
wskaźnik wegetacji
wskaźnik geologiczny
dokładność GPS
Opis:
Rising food prices mean that solutions are sought that will reduce the costs of agricultural production. One area of research is precision agriculture. This solution requires a computerized plant growth monitoring system. The paper presents a computer system for monitoring plant growth, developed for the needs of precision agriculture for small agricultural areas. The work contains a description of the monitoring system divided into the key elements of the process. An exemplary method of preparing orthophotomaps of the area was presented. The method of making maps that can be implemented on a personal computer has been described. The paper describes the most frequently used Geologic Indicators and Vegetation Index. A test of determining the coefficients was carried out on exemplary acreage with an area of 5.28 ha. Typical positioning systems for agricultural machines are discussed. The DGPS (Differential Global Positioning System) navigation method was used in the tests, which confirmed that it can be used in precision agriculture for small agricultural areas while maintaining sufficient positioning accuracy. The presented system was tested during one cycle of vegetation of winter barley sown with the no-plowing method. On this basis, an analysis of savings resulting from the reduction of the amount of fertilizers and plant care products used was carried out. The proposed system does not require complicated computer systems. It was designed in such a way that it can be implemented on standard PC equipment cooperating with a short-range drone equipped with a standard RGB (Red Green Blue) camera.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 1; art. no. e144582
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Postulat operacyjności definicji w naukach społecznych
DEFINITIONS OPERATIVENESS POSTULATE IN SOCIAL SCIENCES
Autorzy:
Karpinski, Jakub
Powiązania:
https://bibliotekanauki.pl/articles/427972.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
CONCEPTS SELECTION
DEFINITION OF INDICATOR
DEFINITION OF PROPERTY
OPERATIONISM
Opis:
The article's primary goal is to demonstrate the problems inherited in 'operationism - antioperationism' polemics. The opinions on operationism are divided. The term 'operationistic views' is a conceptual cluster, in which the components' meanings are imprecise. The term 'operational definition' shares the same quality. In general science methodology many distinguished social science methodologists continue developing and modifying operationism. Both the supporters and critics of operationism have succeeded in formulating a significant number of prominent methodological issues; operationism studies inspire thinking on the methods of concepts, indicators and techniques selection in science as well as on the reasoning for the choices made. I suggest to call the extension of operativeness postulate the operativity postulate. It reads: concepts are to be defined through descriptions of observable states of matter. Definition's operativity postulate shall be applied to definitions of indicated properties (in cases of definitional indicator) as well as to definitions of indicators (in case of correlation indicator).
Źródło:
Studia Socjologiczne; 2011, 1(200); 65-80
0039-3371
Pojawia się w:
Studia Socjologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ancient woodland indicator plant species in the parks and gardens of the Pomeranian Cistercian Trail
Autorzy:
Sobisz, Zbigniew
Kubus, Marcin
Szmyt, Ewa
Strzalkowski, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/2025982.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Cistercians
ancient woodland
indicator species
parks and gardens
Pomerania
Opis:
The research aimed to make an inventory of the vascular flora of 11 parks and gardens of the Pomeranian Cistercian Trail, with particular emphasis on taxa attached to old deciduous forests. A total of 62 species were registered, recognised as indicators of old deciduous forests in Poland. The presence of species of this group was confirmed in all of the analysed objects, but their number varied from 7 to 50. The group of ancient woodland species includes forest species for which the light indicator values are lower than or equal to 4 (plants of shadowy places, with a relative light intensity). The group of indicator species also includes forest geophytes and forest myrmecochores, autochores and barochores, as well as woodland species that can tolerate stress, under the classification of ecological strategy types S, S/CSR, S/SC and S/SR.
Źródło:
Studia Quaternaria; 2021, 38, 2; 133-141
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fennoscandian erratics in glacial deposits of the polish lowland - Methodical aspects
Autorzy:
Górska, Maria
Powiązania:
https://bibliotekanauki.pl/articles/2027069.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
indicator and statistical erratics
glacial deposits
Polish Lowland
Vistulian
Opis:
In the gla cial de pos its of the Pol ish Low land, there are er ratic boul ders drifted with the last con ti nen tal ice sheet. Their out crops are situ ated in the Bal tic Shield area as well as south of it, in the bot tom of the cen tral and south ern Bal tic Sea. In di ca tor er rat ics, sta tis ti cal er rat ics and the oth ers can be dis tin guished in coarse- gravels as so cia tions. The stud ies on iden ti fi ca tion of the in di ca tor er rat ics are de signed for speci fi ca tion of the Scan di na vian and Bal tic ali men ta tion cen - tres of gla cial tills of dif fer ent age and their flu vio gla cial coun ter parts; they are also aimed at de ter min ing the di rec tion of the dis tant trans port as well as the ice- sheet and its streams’ trans gres sion routes to the depo si tion places. Ef fec tive - ness of the analy sis de pends to a large ex tent on the cor rect clas si fi ca tion of er rat ics, and this abil ity hap pens in turn to be bur dened with a sub jec tive evalua tion of the clearly visi ble fea tures of an er ratic. In the pres ent pa per, an at ten tion is paid to ad van tages and dis ad van tages of the analy sis on the in di ca tor boul ders of the gla cial de pos its.
Źródło:
Studia Quaternaria; 2006, 23; 11-15
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Short-term positioning accuracy based on mems sensors for smart city solutions
Autorzy:
Grzechca, Damian
Paszek, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/220713.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electro-mechanical system
received signal strength indicator
positioning
filtering
Opis:
The paper presents a method of obtaining short-term positioning accuracy based on micro electro-mechanical system (MEMS) sensors and analysis of the results. A high-accuracy and fast-positioning algorithm must be included due to the high risk of accidents in cities in the future, especially when autonomous objects are taken into account. High-level positioning systems should consider a number of sub-systems such as global positioning system (GPS), CCTV – video analysis, a system based on analysis of signal strength of access points (AP), etc. Short-term positioning means that there are other locating systems with a sufficiently high degree of accuracy based on, e.g. a video camera, but the located object can disappear when it is hidden by other objects, e.g. people, things, shelves etc. In such a case, MEMS sensors can be employed as a positioning system. The paper examines typical movement profiles of a radio-controlled (RC) model and fundamental filtering methods in respect of position accuracy. The authors evaluate the complexity and delay of the filter and the accuracy of the positioning in respect of the current speed and phase of movement (positive acceleration, constant) of the object. It is necessary to know whether and how the length of the filter changes the position accuracy. It has been shown that the use of fundamental filters, which provide solutions in a short time, enables to locate objects with a small error in a limited time.
Źródło:
Metrology and Measurement Systems; 2019, 26, 1; 95-107
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of human operators and industrial robots performance and reliability
Autorzy:
Gołda, G.
Kampa, A.
Paprocka, I.
Powiązania:
https://bibliotekanauki.pl/articles/407109.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
human factors
industrial robots
machine reliability
work performance
OEE indicator
Opis:
In the article problems related to human labor and factors affecting the increasing use of industrial robots are discussed. Since human factors affect the production processes stability, robots are preferred to apply. The application of robots is characterized by higher performance and reliability comparing to human labor. The problem is how to determine the real difference in work efficiency between human operator and robot. The aim of the study is to develop a method that allows clearly definition of productivity growth associated with the replacement of human labor by industrial robots. Another aim of the paper is how to model robotized and manual operated workstation in a computer simulation software. Analysis of the productivity and reliability of the hydraulic press workstation operated by the human operator or an industrial robot, are presented. Simulation models have been developed taking into account the availability and reliability of the machine, operator and robot. We apply OEE (Overall Equipment Effectiveness) indicator to present how availability and reliability parameters influence over performance of the workstation, in the longer time. Simplified financial analysis is presented considering different labor costs in EU countries.
Źródło:
Management and Production Engineering Review; 2018, 9, 1; 24-33
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rotifers as indicators of climate change in the Antarctic environments
Autorzy:
Pociecha, A.
Powiązania:
https://bibliotekanauki.pl/articles/11956.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
rotifer
indicator
climate change
Antarctic environment
biodiversity
freshwater ecosystem
terrestrial ecosystem
Antarctic
Opis:
An important question stated in the presented paper is: Could rotifers be the indicators of climate change in the Antarctic environments? Rotifers are one of the most important components of the invertebrate fauna of the Antarctic freshwater and terrestrial ecosystems. However, investigations of their distribution, diversity and an ecological role in the environment have been widely neglected, mainly due to the methodological and taxonomical difficulties. During the investigations 176 species of rotifers were found, including the endemic and cosmopolitan species. Their existence is directly proportional to microvariations of humidity factor. Scientists still have poor knowledge about the occurrence of rotifer species in recently studied habitats e.g. cryoconite holes, nunataks or soil. Probably rotifers could be the indicators of climate change in the Antarctic freshwater and terrestrial ecosystems but more investigations and monitoring studies are needed.
Źródło:
Papers on Global Change; 2010, 17
2300-8121
1730-802X
Pojawia się w:
Papers on Global Change
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Slowdown or Recession? Forecasts Based on Composite Leading Indicator
Autorzy:
Klúcik, Miroslav
Juriová, Jana
Powiązania:
https://bibliotekanauki.pl/articles/483289.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Global economic crisis
recession
composite leading indicator
ARIMAX model
error correction model
Opis:
The economy of Slovakia experienced a turning point in the 1st half of 2008 and entered a phase of decline. The negative impacts of the global economic crisis became evident in the 2nd half of 2008 and led into a recession in the 1st quarter of 2009. The composite leading indicator was originally intended for forecasting of business cycle turning points between the decline and growth phases. The aim of this paper is to transform the qualitative information from composite leading indicator into quantitative forecast and verify whether the beginning of recession in Slovakia could have been identified in advance. The ARIMAX and error correction models are used for the composite reference series and GDP forecasts respectively. The final result shows that the composite leading indicator is useful not only for identifying turning points, but also for the prediction of recession phase.
Źródło:
Central European Journal of Economic Modelling and Econometrics; 2010, 2, 1; 17-36
2080-0886
2080-119X
Pojawia się w:
Central European Journal of Economic Modelling and Econometrics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zróżnicowanie krajowej przestrzeni gospodarczej w świetle miernika syntetycznego
Diversification of Polish economic space in the light of synthetic indicator
Autorzy:
Kudełko, Joanna
Zioło, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/2032301.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
synthetic indicator
structure of a synthetic indicator
employment
fixed assets
gross domestic product
economic operator
wskaźnik syntetyczny
struktura wskaźnika syntetycznego
zatrudnienie
środki trwałe
produkt krajowy brutto
podmioty gospodarcze
Opis:
The article proposes the use of a synthetic indicator in spatial research. In the construction of synthetic indicator, it assumes that the indicator should not only specify the synthetic value based of on empirical data, but also show its structure. The structure of the indicator should answer the question to what extent individual empirical measures influence to the value of a synthetic indicator. Using the rules of statistical grouping, four groups of voivodships with different economic potential were distinguished. Research shows that on the synthetic indicator of voivodships (in particular groups) were affected to a varying extent by the values of empirical variables: number of employees, value of fixed assets, value of gross domestic product, number of economic operators.
Źródło:
Biuletyn Komitetu Przestrzennego Zagospodarowania Kraju PAN; 2018, 272; 13-26
0079-3493
Pojawia się w:
Biuletyn Komitetu Przestrzennego Zagospodarowania Kraju PAN
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geoinformation analysis of the united territorial communities land use
Autorzy:
Evdokimov, Andrii
Dolia, Kostiantyn
Rudomakha, Artur
Palamar, Elena
Powiązania:
https://bibliotekanauki.pl/articles/145402.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
analiza geoinformacyjna
wskaźnik zintegrowany
użytkowanie gruntów
integrated indicator
united territorial communities
geoinformation analysis
Opis:
The value of the integrated indicator of the united territorial communities land use is determined. An assessment of the integral indicator was carried out and directions for the development of methodological recommendations to improve the efficiency of land use of the united territorial communities were identified. A feature of the use of GIS for analysis and visualization of integrated indicators of land use of the united territorial communities is the development of a geoinformation analysis scheme. The developed scheme of geoinformation systems using for modelling, evaluation, and analysis of integrated indicators of the united territorial communities land use gives the opportunity to form information and analytical support of monitoring based on geospatial information and to create the basis for increasing the united territorial communities land use. The sequence obtained in the article ensures the monitoring of changes in the spatial characteristics of the lands of the united territorial communities in the region. The results of determining the integral indicators of land use of the united territorial communities obtained in the article make it possible to carry out geoinformation analysis and build a GIS map of the land use. The developed GIS map allows the formation of information and analytical monitoring support based on the values of integrated indicators of land use. Also, the data of the presented map allow to predict the directions of land use of the united territorial communities, to compare them by territorial features and features depending on changes of system spatial, urban, investment and ecological factors.
Źródło:
Geodesy and Cartography; 2019, 68, 2; 261-272
2080-6736
2300-2581
Pojawia się w:
Geodesy and Cartography
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recognition of the 24-hour Noise Exposure of a Human
Autorzy:
Korbiel, T.
Stępień, B.
Batko, W.
Barański, R.
Mleczko, D.
Pawlik, P.
Blaut, J.
Powiązania:
https://bibliotekanauki.pl/articles/177799.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
noise hazard
24-hour noise exposure
Personal Indicator of Noise Hazard
acoustic monitoring
Opis:
The civilisation progress has caused noise to become one of essential pathogenic and life comfort decreasing factors. There are several legal regulations aimed at controlling the noise influence on humans. Assessment of the twenty-four-hour influence of noises in various environments constitutes an essential problem. The answer can be supplied by 24-hour monitoring of the sound pressure. This paper is an attempt to learn the real loading of humans by noises. A personal noise indicator was used in measurements. The human 24-hour activity was divided into cycles allowing to model noise hazards. The collected data, even though they did not signal exceeding of individual standards, in the 24-hour period indicated the essential noise influence. These results indicate the need of investigations to recognise the 24-hour noise load of a human, with taking into account various forms of their activity and the need of rest.
Źródło:
Archives of Acoustics; 2017, 42, 4; 601-607
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The recommendations for territorial development of land use in the region
Autorzy:
Mamonov, Kostiantyn
Kondrashenko, Elena
Radzinskaya, Yuliia
Myronenko, Maria
Powiązania:
https://bibliotekanauki.pl/articles/145350.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
użytkowanie gruntów
rozwój terytorialny
modelowanie matematyczne
integrated indicator
land use
territorial development
mathematical modeling
Opis:
In order to ensure the territorial development of land use in the region, there is a need to change the trajectory of spatial and urban planning factors. The ways for implementation of the proposed system measures are defined in the article. For investment and environmental indicators, the integrated indicator of territorial development of land use in the region, depending on their change, is predicted. The article presents the results of forecasting the integrated indicator of land use territorial development in the region based on the growth of systemic investment factors and the results of forecasting the integrated indicator of land use territorial development based on the growth of systemic environmental factors. Practical scientific-based recommendations for ensuring the territorial development of land use in the region by applying the results of its integrated assessment and modeling are proposed. Developed recommendations made it possible to form directions and build the basis for ensuring the territorial development of land use in the region. The development of methodological recommendations for ensuring the territorial development of land use in the region is based on the results of the study of the influence of systematic spatial, urban, investment, and environmental factors on the integrated indicator of land use territorial development.
Źródło:
Geodesy and Cartography; 2020, 69, 1; 39-51
2080-6736
2300-2581
Pojawia się w:
Geodesy and Cartography
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Type A Standard Uncertainty of Long-Term Noise Indicators
Autorzy:
Batko, W. M.
Stępień, B.
Powiązania:
https://bibliotekanauki.pl/articles/176923.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
long-term noise indicator
uncertainty
non-classical statistics
kernel density estimation
bootstrap
Bayesian inference
Opis:
The problem of estimation of the long-term environmental noise hazard indicators and their uncer- tainty is presented in the present paper. The type A standard uncertainty is defined by the standard deviation of the mean. The rules given in the ISO/IEC Guide 98 are used in the calculations. It is usually determined by means of the classic variance estimators, under the following assumptions: the normality of measurements results, adequate sample size, lack of correlation between elements of the sample and observation equivalence. However, such assumptions in relation to the acoustic measurements are rather questionable. This is the reason why the authors indicated the necessity of implementation of non-classical statistical solutions. An estimation idea of seeking density function of long-term noise indicators distri- bution by the kernel density estimation, bootstrap method and Bayesian inference have been formulated. These methods do not generate limitations for form and properties of analyzed statistics. The theoretical basis of the proposed methods is presented in this paper as well as an example of calculation process of expected value and variance of long-term noise indicators LDEN and LN. The illustration of indicated solutions and their usefulness analysis were constant due to monitoring results of traffic noise recorded in Cracow, Poland.
Źródło:
Archives of Acoustics; 2014, 39, 1; 25-36
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Features of underground real estate use: infrastructural and regional aspects
Autorzy:
Meteshkin, Kostiantyn
Shipulin, Volodymyr
Nesterenko, Serhii
Kobzan, Serhii
Powiązania:
https://bibliotekanauki.pl/articles/145308.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
nieruchomość podziemna
użytkowanie gruntów
planowanie urbanistyczne
underground real estate
land use
integrated indicator
urban planning
assessment
Opis:
The transformation processes that occur in the technical, informational, and economic spheres of the regions require the development of new conceptual approaches to the development of a full-fledged land use system based on an analysis of the problems of using underground real estate. Determination of the features of land use of underground real estate is based on a quantitative basis, which is built on a systematic, integrated approach. Indicators that determine the condition and use of underground real estate are of particular importance for the development of the approach. A method of estimating a generalized indicator of the use of underground real estate in the system of land use of regions based on an integrated approach, which includes the method of expert assessments by applying qualitative indicators characterizing the status and level of use of underground real estate, considering urban, spatial, investment and innovation legal and safety features is developed. The assessment results of the integrated indicator of underground real estate land use, as well as the results of the assessment by region, showed a low level of use of underground real estate in the land use system of the regions. It is determined that most of the lands in the regions have low levels of underground real estate use. Besides, there is a need to increase the use of underground real estate by developing appropriate methodological recommendations.
Źródło:
Geodesy and Cartography; 2020, 69, 1; 53-64
2080-6736
2300-2581
Pojawia się w:
Geodesy and Cartography
Dostawca treści:
Biblioteka Nauki
Artykuł
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