Determination of the spatial behavior of anthracnose in avocado cultivation using spatial statistics

Spectroscopic studies of laser-induced plasma from a high-temperature superconducting material, viz., YBa2Cu3O7 (YBCO), have been carried out. Electron temperature and electron density measurements were made from spectral data. The Stark broadening of emission lines was used to determine the electron density, and the ratio of line intensities was exploited for the determination of electron temperature. An initial electron temperature of 2.35 eV and electron density of 2.5 × 1017 cm−3 were observed. The dependence on electron temperature and density on different experimental parameters such as distance from the target, delay time after the initiation of the plasma, and laser irradiance is also discussed in detail.

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Geostatistics of Active Fire Remote Sensing Data - Examples from South Asia

10.21203/rs.3.rs-243446/v1 ◽

2021 ◽

Author(s):

Jyoti U. Devkota

Keyword(s):

Remote Sensing ◽

South Asia ◽

Spatial Statistics ◽

Geographical Location ◽

Remote Sensing Data ◽

Spatial Behavior ◽

Spatial Error ◽

Spatial Lag Model ◽

Active Fire ◽

Lag Model

Abstract Active fires illuminated on the earth surface are caught by the satellite. These fires are created by various sources such as vegetation fires, gas flares, biomass burning, volcanoes, and industrial sites such as steel mills. Near real time active fire data is collected using remote sensing techniques of satellites. Amount of active fires in an area is a proxy indicator of aerosols, green houses gases and trace gases. Here the behavior of active fires over a period of one year in Nepal, Bhutan and Srilanka are studied using spatial statistics. This study is based on data acquired through remote sensing of data acquisition platform, NASA’s MODIS. Spatial statistics is used here to study the incidence of active fires with respect to geographical location. The behavior of parameters of various autoregressive models like Spatial Durban Model, Spatial Lag Model, Spatial Error Model, Manski Model and Kelegian Prucha Model are minutely analyzed. The best model with highest pseudo R2 is selected. The spatial behavior of the fire radiative power for three countries is also predicted using spatial interpolation and kriging. So the burning potential of vegetations in unsampled areas is envisaged by thus predicting FRP. Such studies give a country wise perspective to the behavior of fire; this is with reference to south Asia. They are of great importance for countries of developing world which lack a strong backbone of good quality official records. Through the statistical analyses of data collected by such platforms, important information can be indirectly assessed.

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Numerically Efficient Computation of Eigensolution Spectrum in One-Dimensional Heterostructures

International Journal of Modern Physics C ◽

10.1142/s0129183198000893 ◽

1998 ◽

Vol 09 (07) ◽

pp. 927-934 ◽

Cited By ~ 1

Author(s):

F. Farrelly ◽

A. Petri

Keyword(s):

Transfer Matrix ◽

Density Of States ◽

Spatial Behavior ◽

Efficient Computation ◽

Matrix Methods ◽

One Dimensional ◽

Schrödinger’S Equation ◽

Schrödinger's Equation

We describe a method that allows an efficient determination of the density of states of one-dimensional heterostructures. We show that the propagation of an appropriate vector through the structure together with the use of the node theorem is much more effective than transfer matrix methods in those cases in which highly degenerate spectra are present. As a by-product, spatial behavior of solutions is also easily obtained. A case of elastic propagation is discussed in detail and application to Schrödinger's equation is presented.

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“I Don't See it so it Must be to my Left:” Rehabilitation of Visuospatially Impaired Adults

Journal of Visual Impairment & Blindness ◽

10.1177/0145482x8708100309 ◽

1987 ◽

Vol 81 (3) ◽

pp. 118-119

Author(s):

B. Wouters

Keyword(s):

Parietal Cortex ◽

Spatial Orientation ◽

Visually Impaired ◽

Spatial Behavior ◽

Performance Orientation ◽

The Individual ◽

The Right ◽

The Brain ◽

Insight Into

Patients who are visually impaired because of brain damage often show a visuospatial syndrome characterized by disturbances of spatial orientation and determined behavior. The lesion may be located in the frontal cortex or in the right parietal cortex of the brain; recent research shows that the determination of spatial behavior is impaired. Emphasis in the rehabilitation of these patients should be shifted from perceptual to performance orientation. It is essential for the individual to gain insight into his or her specific impairment and for the professional to work cooperatively using the patient's own strategies.

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Spatial behavior in romantic communication: comparative analysis in the Russian, English, and Spanish linguocultures

Litera ◽

10.25136/2409-8698.2021.4.35279 ◽

2021 ◽

pp. 214-223

Author(s):

Alina Sergeevna Zagrebelnaya

Keyword(s):

Comparative Analysis ◽

Great Britain ◽

Detailed Analysis ◽

Interpersonal Communication ◽

Literary Text ◽

Spatial Behavior ◽

Depth Study ◽

Characteristic Features

This article describes the concept of “romantic communication”, examines the linguocultural specificity of spatial behavior in the instances of romantic communication in Russian, English and Spanish linguocultures. It is demonstrated that the situations of romantic communication in the indicated linguocultures are characterized by certain spatial movements of the communicants depending on their communicative intentions. The relevance of the selected topic is substantiated by globalization processes and rapid building of contacts between Russia, Great Britain and Spain, which, in turn, bonds these linguocultures and makes requires their in-depth study in order to understand the peculiarities of representation of spatial behavior in the course of interpersonal communication. It is worth noting that there are different approaches towards studying the romantic discourse; assessment is given to the role of the kinesic components therein. The question on similarity and divergence of the proxemic components in romantic communication in the Russian, English and Spanish linguocultures remains debatable, and draws particular interests of the experts in the field of linguistics and linguoculturology, as well as the representatives of business spheres dealing with Russia, Great Britain and Spain in one or another way; it allows to better understand the purpose and use of spatial components in the communicative aspect. The scientific novelty of this research consists in determination of linguistic peculiarities of representation of spatial behavior in the instances of romantic communication in the Russian, English and Spanish linguocultures. As a result of the conducted analysis, the author identifies the key main verbal, nominative, and adjective constructions that represent proxemic components of romantic communication in the English, Russian, and Spanish languages. It is also underlined that the characteristic features of the romantic discourse are related not only to kinesics, but also proxemics, which gives a better perspective on the motives of behavioral specificity of the actors of romantic communication, as well as helps to identify the level of their closeness through detailed analysis of linguistic saturation of the literary text.

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Determination of the optimum sampling frequency of noisy images by spatial statistics

Applied Optics ◽

10.1364/ao.44.003276 ◽

2005 ◽

Vol 44 (16) ◽

pp. 3276 ◽

Cited By ~ 6

Author(s):

Luis Miguel Sanchez-Brea ◽

Eusebio Bernabeu

Keyword(s):

Spatial Statistics ◽

Sampling Frequency ◽

Noisy Images ◽

Optimum Sampling

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Galactic orbits of stars

Symposium - International Astronomical Union ◽

10.1017/s0074180900105340 ◽

1966 ◽

Vol 25 ◽

pp. 93-97

Author(s):

Richard Woolley

Keyword(s):

Globular Cluster ◽

Potential Field ◽

High Velocity ◽

Velocity Vector ◽

Variable Stars ◽

The Sun ◽

Proper Motions ◽

Rr Lyrae ◽

The Galaxy

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.

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Distance to SN 1987A and the LMC

Symposium - International Astronomical Union ◽

10.1017/s0074180900118959 ◽

1999 ◽

Vol 190 ◽

pp. 549-554

Author(s):

Nino Panagia

Keyword(s):

Angular Size ◽

Large Magellanic Cloud ◽

Magellanic Cloud ◽

Light Curves ◽

Distance Modulus ◽

Absolute Size ◽

Sn 1987A

Using the new reductions of the IUE light curves by Sonneborn et al. (1997) and an extensive set of HST images of SN 1987A we have repeated and improved Panagia et al. (1991) analysis to obtain a better determination of the distance to the supernova. In this way we have derived an absolute size of the ringRabs= (6.23 ± 0.08) x 1017cm and an angular sizeR″ = 808 ± 17 mas, which give a distance to the supernovad(SN1987A) = 51.4 ± 1.2 kpc and a distance modulusm–M(SN1987A) = 18.55 ± 0.05. Allowing for a displacement of SN 1987A position relative to the LMC center, the distance to the barycenter of the Large Magellanic Cloud is also estimated to bed(LMC) = 52.0±1.3 kpc, which corresponds to a distance modulus ofm–M(LMC) = 18.58±0.05.

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International determination of the total motion of the pole

Symposium - International Astronomical Union ◽

10.1017/s0074180900177824 ◽

1961 ◽

Vol 13 ◽

pp. 29-41

Author(s):

Wm. Markowitz

Keyword(s):

Secular Motion ◽

The Future

A symposium on the future of the International Latitude Service (I. L. S.) is to be held in Helsinki in July 1960. My report for the symposium consists of two parts. Part I, denoded (Mk I) was published [1] earlier in 1960 under the title “Latitude and Longitude, and the Secular Motion of the Pole”. Part II is the present paper, denoded (Mk II).

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Time and Latitude in South Africa

International Astronomical Union Colloquium ◽

10.1017/s0252921100026816 ◽

1972 ◽

Vol 1 ◽

pp. 27-38

Author(s):

J. Hers

Keyword(s):

South Africa ◽

Cape Town ◽

Astronomical Observations ◽

Royal Observatory ◽

The Republic ◽

Astronomical Determination ◽

Limited Accuracy ◽

Better Than

In South Africa the modern outlook towards time may be said to have started in 1948. Both the two major observatories, The Royal Observatory in Cape Town and the Union Observatory (now known as the Republic Observatory) in Johannesburg had, of course, been involved in the astronomical determination of time almost from their inception, and the Johannesburg Observatory has been responsible for the official time of South Africa since 1908. However the pendulum clocks then in use could not be relied on to provide an accuracy better than about 1/10 second, which was of the same order as that of the astronomical observations. It is doubtful if much use was made of even this limited accuracy outside the two observatories, and although there may – occasionally have been a demand for more accurate time, it was certainly not voiced.

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