Temat: stress index - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Comparasion of Crop Water Stress Index (CWSI) and Water Deficit Index (WDI) by using Remote Sensing (RS)
Autorzy:: Tanriverdi, C.
Atilgan, A.
Degirmenci, H.
Akyuz, A.
Powiązania:: https://bibliotekanauki.pl/articles/101434.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:: water stress index
crop water stress index
water deficit index
remote sensing
Opis:: Drought, water scarcity and climate changes are very important threats for agriculture on a global basis. Remote Sensing (RS) is accepted as a technique to collect data and determine water stress indices. Water Stress Indices (WSI) are useful tools to prevent drought and determine irrigation scheduling. The water stress indices are primarily identified as the Crop Water Stress Index (CWSI) and the Water Deficit Index (WDI). The effect of soil background is major problem to establish CWSI especially during early growth stage measurements of canopy temperature (Ts). Hence, WDI is a better index when it comprised with CWSI because of Ts. CWSI and WDI can be determined by two different techniques. These are determined by using measured by using traditional components to collect data and estimated methods by applying RS components to collect necessary data. Estimated method has many advantages when this method compared with measured method. However, estimated method needs some RS components which are infrared gun (IR), sling psychrometer, Spectro radiometer. With the help of these tools, the necessary data are obtained and WDI is determined. By using Spectro radiometer vegetation indices are defined. Among the many vegetation indices, the Normalized Difference Vegetation Index (NDVI) is mostly used one. By using NDVI determination of vegetation cover is easy and accurate technique to establish WDI. Establishing these both stress indices with less fieldwork and by saving money, time and labor conveys the necessary information for agriculturists using remotely sensed data especially for large agricultural fields.
Źródło:: Infrastruktura i Ekologia Terenów Wiejskich; 2017, III/1; 879-894
1732-5587
Pojawia się w:: Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Derinkuyu dry bean irrigation planning in semi-arid climate by utilising crop water stress index values
Autorzy:: Uçak, Ali B.
Atılgan, Atılgan
Korytowski, Mariusz
Kocięcka, Joanna
Liberacki, Daniel
Stachowski, Piotr
Saltuk, Burak
Rolbiecki, Roman
Powiązania:: https://bibliotekanauki.pl/articles/28411640.pdf
Data publikacji:: 2023
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: dry bean
crop water stress index
CWSI
irrigation time
plant water stress index
Turkey
Opis:: This study was conducted to determine crop water stress index (CWSI) values and irrigation timing in the case of Derinkuyu dry bean (Phaseolus vulgaris L.). In 2017, dry beans were grown as the main crop according to the field design consisting of plots divided into randomised blocks. Irrigation treatment comprised full irrigation (I100) and irrigation issues with three different levels of water stress (I66, I33, I0). This study applied 602 mm of water under the I100 irrigation. The yield of Derinkuyu dry beans was equal to 3576.6 kg∙ha-1 in I100 irrigation. The lower limit (LL) value, which is not necessary for the determination of CWSI, was obtained as the canopy-air temperature difference (Tc - Ta) versus the air vapour pressure deficit (VPD). The upper limit (UL) value, at which the dry beans were wholly exposed to water stress, was obtained at a constant temperature. The threshold CWSI value at which the grain yield of dry beans started to decrease was determined as 0.33 from the measurements made with an infrared thermometer before irrigation in I66 irrigation treatment. As a result, it can be suggested that irrigation should be applied when the CWSI value is 0.33 in dry beans. Furthermore, the correlation analysis revealed a negative correlation between grain yield and crop water stress index and a positive correlation between yield and chlorophyll content. According to variance analysis, significant relationships were found between the analysed parameters at p ≤ 0.01 and p ≤ 0.05.
Źródło:: Journal of Water and Land Development; 2023, 59; 145--152
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Defining Irrigation Scheduling Based on Crop Water Stress Index and Physiological Parameters for Hybrid Corn in Semi-Arid Climate
Autorzy:: Ucak, Ali Beyhan
Saltuk, Burak
Rolbiecki, Roman
Atilgan, Atilgan
Powiązania:: https://bibliotekanauki.pl/articles/2174923.pdf
Data publikacji:: 2022
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:: corn
crop water stress index
irrigation time
correlation
Opis:: The goal of this study is to determine the crop water stress index (CWSI) and irrigation scheduling based on CWSI values, as well as to examine the correlations between CWSI, physiological parameters and grain yield of hybrid corn P31A34 in semi-arid climate conditions. In 2014 and 2015, the upper limit (UL) temperatures at which plants were entirely exposed to water stress were 1.178°C and 2.38°C, respectively. When the corn grain yield began to decline, the CWSI threshold value was 0.34, indicating the yield limit. Grain yield, crop water consumption, crop water stress index, chlorophyll content, water use efficiency and leaf area index were found to have negative correlations (p ≤ 0.01) with CWSI values in both years of the study. The findings revealed that in semi-arid climate conditions, a maximum of 30% water deficit could be used during the growing period of the corn compared to full irrigation (I100) for water savings and that a water deficit greater than 30% results in considerable grain yield losses. In areas with limited water resources, the moderate water deficit (I70) may be a viable alternative to the I100.
Źródło:: Rocznik Ochrona Środowiska; 2022, 24; 231--245
1506-218X
Pojawia się w:: Rocznik Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Genetic parameters assessment of siliquae associated with stress indices in rapeseed cultivars
Ocena parametrów genetycznych łuszczyn roślin w odniesieniu do wskaźników stresu w odmianach rzepaku
Autorzy:: Rameeh, V.
Powiązania:: https://bibliotekanauki.pl/articles/11236547.pdf
Data publikacji:: 2012
Wydawca:: Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:: genetic parameter
assessment
stress index
plant stress
rapeseed
plant cultivar
heritability
Źródło:: Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura; 2012, 67, 4; 35-44
0365-1118
Pojawia się w:: Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Comparison of stress susceptibility index of silage corn and sorghum crops
Autorzy:: Keten, Mualla
Değirmenci, Hasan
Powiązania:: https://bibliotekanauki.pl/articles/2131636.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:: maize
sorghum
yield
stress susceptibility index
Opis:: Drought is an important factor that causes a decrease in yield and quality in regions where second crop silage plants are grown. One of the biggest problems in animal husbandry is feed. Especially silage feed production tends to decrease in areas with increasing water deficit and where water needs cannot be met. The high water requirement of the corn plant requires irrigation in arid and semi-arid regions. However, in order to continue the production of silage fodder in regions where water resources are insufficient with the increase of drought, it will be necessary to grow forage plants that can be an alternative to corn plant. In previous studies, it has been discussed whether the sorghum plant is an alternative to the corn plant. The aim of this study is to determine the drought sensitivity index based on the yield values of both plants in wet and dry conditions. Thus, it will be determined whether the sorghum plant will be an alternative to the corn plant in terms of drought. The identification and selection of drought-resistant cultivars and species is possible using various indices. In this study, second crop silage maize and sorghum crops were grown in Kahramanmaraş conditions for two years (2018 and 2019), dry and irrigated. Stress sensitivity index (SSI) was used to determine the drought tolerance of silage maize and sorghum crops. 'Colonia' variety was used for silage corn and 'Es Foehn' variety was used for sorghum. When the STI values are examined, the corn and sorghum values for 2018 were 0.55 and 0.53, respectively, while the d values for 2019 were found as 0.33 in corn and 0.54 in sorghum. these values are very close to the YSI values. While the 2018 values in both indices were not determinative in terms of drought resistance, the value of sorghum in 2019 was 64% higher than corn (this value was found to be 61% for YSI). This also showed that there is a direct correlation between YSI and STI indices.
Źródło:: Infrastruktura i Ekologia Terenów Wiejskich; 2022, nr I/1; 21-28
1732-5587
Pojawia się w:: Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: CropSyst model for wheat irrigation water management with fresh and poor quality water
Model CropSyst do zarządzania nawadnianiem pszenicy wodą słabej jakości
Autorzy:: Ouda, S. A.
Noreldin, T.
Mounzer, O. H.
Abdelhamid, M. T.
Powiązania:: https://bibliotekanauki.pl/articles/292497.pdf
Data publikacji:: 2015
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: agricultural drainage water
deficit irrigation
fresh water
water stress index
deficyt nawodnień
indeks stresu wodnego
wody drenarskie
wody naturalne
Opis:: CropSyst model can be used as irrigation water management tool to increase wheat productivity with poor quality water. The objective of this study was to calibrate CropSyst model for wheat irrigated with fresh and agricultural drainage water. To do so, three field experiments were conducted during three successive seasons in Nubaria Agricultural Research Station, Egypt representing the newly reclaimed calcareous soils. In the first season the treatments were 100% crop evapotranspiration (ETc) of fresh water (FW) and 100% ETc of agricultural drainage water (DW), while in the second and the third seasons, the treatments were 100% ETc of FW, 100% ETc of DW, 120% ETc of DW and 130% ETc of DW. From these results one can concluded that deducting 5% of the applied water to all treatments reduced yield by 3, 5 and 7% in the first, second and third growing season, respectively as a result of heat stress existed in the 2^nd and 3^rd seasons during reproductive phase. Furthermore, deducting 5% of the applied water from all treatments in the vegetative phase only resulted in lower yield losses. Thus, using CropSyst model could guide us to when we could reduce the applied irrigation water to wheat to avoid high yield losses.
Model CropSyst może znaleźć zastosowanie jako narzędzie w zarządzaniu systemem nawodnień wodą niskiej jakości w celu zwiększenia produkcji pszenicy. Przedmiotem przedstawionych badań było skalibrowanie modelu CropSyst do nawodnień pszenicy wodą naturalną i wodą z rolniczych systemów drenarskich. W tym celu przeprowadzono trzy eksperymenty polowe w trzech kolejnych sezonach realizowane w Nubaria Agricultural Research Station w Egipcie na ostatnio zmeliorowanych glebach wapiennych. W pierwszym sezonie warianty eksperymentalne obejmowały: 100% ewapotranspiracji (ETc) wody naturalnej (FW) i 100% ETc wody z systemów drenarskich (DW); w drugim i trzecim sezonie wariantami eksperymentalnymi były: 100% ETc z użyciem FW, 100% ETc z użyciem DW oraz 120% i 130% ETc z zastosowaniem DW. Uzyskane wyniki dają podstawy do wnioskowania, że zmniejszenie ilości wody zastosowanej do nawodnień o 5% we wszystkich wariantach zmniejszyło plony o 3, 5 i 7% odpowiednio w pierwszym, drugim i trzecim sezonie wskutek stresu termicznego, jaki wystąpił w drugim i trzecim sezonie w fazie reprodukcji. Ponadto, zmniejszenie ilości stosowanej wody o 5% jedynie w trakcie fazy wegetatywnej skutkowało mniejszymi stratami plonu. Podsumowując, zastosowanie modelu CropSyst umożliwia nam stwierdzenie, kiedy można ograniczyć ilość wody do nawodnień i uniknąć znaczących strat w plonie pszenicy.
Źródło:: Journal of Water and Land Development; 2015, 27; 41-50
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Reactive oxygen metabolitesin alpha-herpesvirus-seropositive Mediterranean buffaloes (Bubalus bubalis): a preliminary study
Autorzy:: Tafuri, S.
Marullo, A.
Ciani, F.
Della Morte, R.
Montagnaro, S.
Fiorito, F.
De Martino, L.
Powiązania:: https://bibliotekanauki.pl/articles/2087691.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Bubalus bubalis
Bubaline herpesvirus 1 (BuHV-1)
Bovine herpesvirus 1 (BoHV-1)
reactive oxygen metabolites (ROM)
oxidative stress index (Osi)
Źródło:: Polish Journal of Veterinary Sciences; 2018, 21, 3; 639-642
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Non-contact video-based remote photoplethysmography for human stress detection
Autorzy:: Nikolaiev, Sergii
Telenyk, Sergii
Tymoshenko, Yury
Powiązania:: https://bibliotekanauki.pl/articles/385232.pdf
Data publikacji:: 2020
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: video processing
web cameras
stress index
remote photoplethysmography
rPPG
heart rate
heart rate variability
Predictive
Preventive
Personalized Medicine
Participatory Medicine
Opis:: This paper presents the experimental results for stress index calculation using developed by the authors information technology for non-contact remote human heart rate variability (HRV) retrieval in various conditions from video stream using common wide spread web cameras with minimal frame resolution of 640x480 pixels at average frame rate of 25 frames per second. The developed system architecture based on remote photoplethysmography (rPPG) technology is overviewed including description of all its main components and processes involved in converting video stream of frames into valuable rPPG signal. Also, algorithm of RR-peaks detection and RR-intervals retrieval is described. It is capable to detect 99.3% of heart contractions from raw rPPG signal. The usecases of measuring stress index in a wide variety of situations starting with car and tractor drivers at work research and finishing with students passing exams are presented and analyzed in detail. The results of the experiments have shown that the rPPG system is capable of retrieving stress level that is in accordance with the feelings of experiments’ participants.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2020, 14, 2; 63-73
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Indeks stresu na rynku zbywalnych instrumentów finansowych w Polsce
Stress Index in the Negotiable Financial Instruments Market in Poland
Autorzy:: Kravchuk, Igor
Powiązania:: https://bibliotekanauki.pl/articles/525928.pdf
Data publikacji:: 2017-05-30
Wydawca:: Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:: indeks stresu
rynek zbywalnych instrumentów finansowych
stabilność finansowa
płynność rynkowa
zmienność rynku
stress index
negotiable financial instruments market
financial stability
market liquidity
market volatility
Opis:: Celem badania jest weryfikacja zakłóceń na rynku zbywalnych instrumentów finansowych w Polsce na podstawie szacunków kompozytowego indeksu stresu, który obejmuje wskaźniki dotyczące rynku akcji (zmienność, płynność, CMAX na podstawie indeksu giełdowego WIG), rynku obligacji (zmienność rentowności 10-letnich obligacji skarbowych, ich płynność, spread suwerenny oraz krzywej rentowności) i rynku derywatów (zmiana liczby otwartych pozycji oraz wolumenu na rynku kontraktów terminowych i opcji). Przeprowadzona analiza wartości indeksu w latach 2007–2015 potwierdza skuteczność indeksu stresu (FIMSI) w rozpoznaniu zakłóceń na rynku (kiedy wartość indeksu przekracza trend długoterminowy więcej niż o jedno odchylenie standardowe).
The aim of the study is to verify the turbulence in the negotiable financial instruments market in Poland, by evaluating the composite stress index, which includes indicators concerning the stock market (volatility, liquidity, CMAX based on stock index WIG), the bond market (volatility of 10-year Treasury bonds, their liquidity, the sovereign spread and the yield curve spread) and the derivatives market (the change in the number of open positions and volume in the futures and options market). The analysis of index values for the years 2007–2015 confirms the robustness of the stress index (FIMSI) in the diagnosis of stresses in the market (when the index value exceeds the long-term trend by more than 1 standard deviation).
Źródło:: Problemy Zarządzania; 2017, 1/2017 (66), t.2; 193 - 206
1644-9584
Pojawia się w:: Problemy Zarządzania
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Risk assessment during the transportation of dangerous goods considering the functional state of the driver
Autorzy:: Fornalchyk, Yevhen
Afonin, Maksym
Postranskyy, Taras
Boikiv, Mykola
Powiązania:: https://bibliotekanauki.pl/articles/2203853.pdf
Data publikacji:: 2021
Wydawca:: Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:: functional state of the driver
traffic conditions
road conditions
stress index
traffic route
risk
dangerous goods
stan funkcjonalny kierowcy
warunki ruchu drogowego
warunki drogowe
wskaźnik stresu
szlak komunikacyjny
ryzyko
towary niebezpieczne
Opis:: Increase in motorization and densification of populations in cities have led to the use of more resources both for the construction of different objects and for the service and operation of automotive vehicles. As a result, volumes of freight transportation, which are related to the construction and servicing of these objects, increase. New scientifically applied tasks that are related to the safety of freight transportation have emerged. Special attention is being paid to those that are related to dangerous tasks. It is obvious that traffic safety and the quality of the transportation process significantly depend on the behaviors and actions of the driver. The driver, as it is known, is the main chain of the “driver - automobile - road - environment” (DARE) system. With improvements in the technical and operational parameters of vehicles and road characteristics, the study of the functional state (FS) of the driver and the reliability of his skills become more important every time. The specific importance of this becomes clear when drivers operate vehicles that transport dangerous goods. Therefore, research on the interaction of chains of the DARE system (using improved existing and developed methods by the authors) is carried out in this paper, taking into account the indicators of drivers’ FS in different situations (stress index, which consists in evaluation of the heart and brain operations). The results obtained provide an opportunity to predict their behavior in different road situations and, as a consequence, to determine possible risks during the transportation of dangerous goods. The authors improved the methodology of determining the levels of possible risks of accidents and assessment of their consequences, taking into account the peculiarities of transportation routes, traffic conditions, and psychophysiological indicators of the driver`s body during the transportation of dangerous goods within settlements and on the roads between them.
Źródło:: Transport Problems; 2021, 16, 1; 139--152
1896-0596
2300-861X
Pojawia się w:: Transport Problems
Dostawca treści:: Biblioteka Nauki

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