scholarly journals Exploring the Celestial Sphere with the Telescope and Computational Analysis of the Images

2019 ◽  
Vol 2 (1) ◽  
Keyword(s):  
Moving Objects ◽  
Educational Method ◽  
La Palma ◽  
Astronomical Images ◽  
Analysis Of The Images ◽  
Celestial Sphere ◽  
Asteroid Dynamics ◽  
Short Time

One of the modern methods of teaching astronomy is the Investigation, one of Inquiry Based Learning methods, used as an educational method in the elaboration of extracurricular projects, as an example for the students of the Faculty of Sciences, from University of Craiova, Romania. The paper presents a join approach to research in Astronomy and Computer Science, using Scientific Inquiry methods and Computer programming skills to study the asteroid dynamics in the Solar System. Starting with the image analysis with the software Astrometrica, necessary for the determination of moving objects astrometry in astronomical images, the students developed, under supervision of the author, some software tools oriented to fast identification and classification of the founded asteroids. Theirs tools where tested on real astronomy data, namely raw images, obtained with the INT telescope in La Palma, the Canary Islands. Following this methodological experiment the students arrive to develop within a short time advanced practical skills for research in Computational Astronomy, increasing in the same time theirs knowledge as Web programmers.

scholarly journals Feature Fusion Reveals Slow and Fast Visual Memories

2007 ◽  
Vol 19 (4) ◽  
pp. 632-641 ◽  
Author(s):  
Frank Scharnowski ◽  
Frouke Hermens ◽  
Thomas Kammer ◽  
Haluk Öğmen ◽  
Michael H. Herzog
Keyword(s):  
Visual System ◽  
Moving Objects ◽  
Short Term Memory ◽  
Feature Fusion ◽  
Temporal Integration ◽  
Substantial Part ◽  
Short Term ◽  
Visual Short Term Memory ◽  
Short Time

Although the visual system can achieve a coarse classification of its inputs in a relatively short time, the synthesis of qualia-rich and detailed percepts can take substantially more time. If these prolonged computations were to take place in a retinotopic space, moving objects would generate extensive smear. However, under normal viewing conditions, moving objects appear relatively sharp and clear, suggesting that a substantial part of visual short-term memory takes place at a nonretinotopic locus. By using a retinotopic feature fusion and a nonretinotopic feature attribution paradigm, we provide evidence for a relatively fast retinotopic buffer and a substantially slower nonretinotopic memory. We present a simple model that can account for the dynamics of these complementary memory processes. Taken together, our results indicate that the visual system can accomplish temporal integration of information while avoiding smear by breaking off sensory memory into fast and slow components that are implemented in retinotopic and nonretinotopic loci, respectively.

scholarly journals Inspection problems of rural stone churches

Vestnik MGSU ◽  
2016 ◽  
pp. 74-85 ◽  
Author(s):  
Lyudmila Igorevna Cherkasova ◽  
Aleksandr Glebovich Paushkin ◽  
German Valer’evich Alekseev
Keyword(s):  
Rural Churches ◽  
Efficient Operation ◽  
Emergency Condition ◽  
History Of ◽  
The Difference ◽  
Short Time ◽  
The Village ◽  
The City

The authors describe the reasons for the destruction and the difficult process of restoring old stone churches built before 1917. The article notes the difference between these processes in the village and in the city. In the villages a large number of churches are in emergency condition, but continue to be operated as intended, i.e. for divine service. The article gives the classification of the causes for the destruction process of old rural churches. At the present time old temples usually destruct due to the lack of timely rehabilitation works. Recovery is hindered by the high cost of a comprehensive inspection and restoration. The work can be greatly reduced if the goal is not restoration, but conservation and prevention of an emergency condition. The authors come to the conclusion that the survey of rural churches as opposed to urban ones has the main goals: to determine the state category, to provide space in which the religious services may be held, for example, in the summer, and to provide materials for preservation of the part of the building, the operation of which is impossible. The problems of preservation of the architectural decor and restoration of items are not considered in such an inspection. Such a survey can be called “Express survey”. Express survey is conducted for a short time with a small group of specialists. The examination includes visual examination, thorough photographic images, study of the geological history of the area, interviews with the residents, description of the defects, which reduce the reliability of the building, recommendations for the strengthening of structures, conservation and monitoring frequencies. The works on measurement and determination of the strength of materials must be minimized. For more efficient operation, it is proposed to amend the regulations or create a separate document in addition to the known norms regulating the work using a rapid survey.

scholarly journals Artificial neural network classification of asteroids in the M1:2 mean-motion resonance with Mars

2021 ◽  
Vol 504 (1) ◽  
pp. 692-700
Author(s):  
V Carruba ◽  
S Aljbaae ◽  
R C Domingos ◽  
W Barletta
Keyword(s):  
Supervised Machine Learning ◽  
Machine Learning Methods ◽  
Mean Motion ◽  
Artificial Neural ◽  
Astronomical Images ◽  
Asteroid Dynamics ◽  
First Time ◽  
Asteroid Families ◽  
Mean Motion Resonance

ABSTRACT Artificial neural networks (ANNs) have been successfully used in the last years to identify patterns in astronomical images. The use of ANN in the field of asteroid dynamics has been, however, so far somewhat limited. In this work, we used for the first time ANN for the purpose of automatically identifying the behaviour of asteroid orbits affected by the M1:2 mean-motion resonance with Mars. Our model was able to perform well above 85 per cent levels for identifying images of asteroid resonant arguments in term of standard metrics like accuracy, precision, and recall, allowing to identify the orbital type of all numbered asteroids in the region. Using supervised machine learning methods, optimized through the use of genetic algorithms, we also predicted the orbital status of all multi-opposition asteroids in the area. We confirm that the M1:2 resonance mainly affects the orbits of the Massalia, Nysa, and Vesta asteroid families.

THE ESSENCE, THE NEED FOR EVALUATION AND TYPES OF ECONOMIC POTENTIAL OF ENTERPRISES

2017 ◽  
Author(s):  
Olexandr Yemelyanov ◽  
Keyword(s):  
Economic Activity ◽  
Business Strategies ◽  
Enterprise Management ◽  
Value Assessment ◽  
Economic Potential ◽  
Enterprise Value ◽  
Development Assessment ◽  
State Of The Environment

The formation of business strategies of enterprises should be based on a preliminary assessment of their current and future economic opportunities. Such an assessment is to establish the value of the total economic potential of enterprises and its individual varieties. The purpose of this study was to clarify the essence of the economic potential of enterprises, justify the need for its evaluation and selection of its types. The main approaches to interpreting the terms "potential" and "enterprise potential" are identified. These include resource, result, resource-result, resource-target, and result-target concepts. It is established that the potential of any object, including the enterprise, can be interpreted as a set of its external functional properties, which this object shows or can show in a certain state of the environment in which it is located. Accordingly, the assessment of the potential of an object should be based on the identification and determination of its external properties, taking into account the environment in which the object is located. The main situations in which there is a need for information about certain components of the economic potential of the enterprise are identified, and the types of this potential and the consumers of the information about their level, corresponding to these situations, are determined. In particular, such situations include management of production and sales, management of financial and economic results of the enterprise, management of enterprise development, assessment of the company's need for various types of resources, assessment of enterprise value, assessment of current and future impact of the enterprise on the economy of the country (region), etc. The features of classification of types of enterprise potential existing in the scientific literature are supplemented by the following ones: by the main types of economic activity, by the dynamics of changes in the economic and production system of the enterprise, by consequences for the subject of enterprise potential assessment, by the stages of economic activity, enterprise potential, etc. The obtained results make it possible to improve the understanding of the complex patterns that underlie the formation of the economic potential of enterprises.

State Failure and the Political Violence Phenomenon: A Comparative Analysis of Iraq and Syria Cases

2016 ◽  
Vol 4 (2) ◽  
pp. 170 ◽  
Author(s):  
K. Eylem Özkaya Lassalle
Keyword(s):  
Cold War ◽  
Political Violence ◽  
State Failure ◽  
The Political ◽  
Collective Violence ◽  
Short Run ◽  
Definition Of ◽  
The Cold War

The concept of failed state came to the fore with the end of the Cold War, the collapse of the USSR and the disintegration of Yugoslavia. Political violence is central in these discussions on the definition of the concept or the determination of its dimensions (indicators). Specifically, the level of political violence, the type of political violence and intensity of political violence has been broached in the literature. An effective classification of political violence can lead us to a better understanding of state failure phenomenon. By using Tilly’s classification of collective violence which is based on extent of coordination among violent actors and salience of short-run damage, the role played by political violence in state failure can be understood clearly. In order to do this, two recent cases, Iraq and Syria will be examined.

Method of determination of the text direction on the image with the use of convolutional neural network

2020 ◽  
pp. 96-99
Author(s):  
P.L. Nikolaev
Keyword(s):  
Neural Network ◽  
Convolutional Neural Network ◽  
Deep Neural Network ◽  
Binary Classification ◽  
Synthetic Data ◽  
Real Data ◽  
Method Of Determination ◽  
Classification Of Images

This article deals with method of binary classification of images with small text on them Classification is based on the fact that the text can have 2 directions – it can be positioned horizontally and read from left to right or it can be turned 180 degrees so the image must be rotated to read the sign. This type of text can be found on the covers of a variety of books, so in case of recognizing the covers, it is necessary first to determine the direction of the text before we will directly recognize it. The article suggests the development of a deep neural network for determination of the text position in the context of book covers recognizing. The results of training and testing of a convolutional neural network on synthetic data as well as the examples of the network functioning on the real data are presented.

Actual issues of systematization of scientific knowledge on the conditions of shot in the forensic ballistics

2020 ◽  
Vol 2020 (3) ◽  
pp. 164-169
Author(s):  
Igor' Latyshov ◽  
Fedor Samuylenko
Keyword(s):  
Scientific Knowledge ◽  
Communication Systems ◽  
Production Method ◽  
Natural Phenomenon ◽  
Projectile Energy ◽  
Energy Characteristics ◽  
Shot Classification ◽  
Forensic Ballistics

In this research, there was considered a challenge of constructing a system of scientific knowledge of the shot conditions in judicial ballistics. It was observed that there are underlying factors that are intended to ensureits [scientific knowledge] consistency: identification of the list of shot conditions, which require consideration when solving expert-level research tasks on weapons, cartridges and traces of their action; determination of the communication systems in the course of objects’ interaction, which present the result of exposure to the conditions of the shot; classification of the shot conditions based on the grounds significant for solving scientific and practical problems. The article contains the characteristics of a constructive, functional factor (condition) of weapons and cartridges influence, environmental and fire factors, the structure of the target and its physical properties, situational and spatial factors, and projectile energy characteristics. Highlighted are the forms of connections formed in the course of objects’ interaction, proposed are the author’s classifications of forensically significant shooting conditions with them being divided on the basis of the following criteria: production from the object of interaction, production from a natural phenomenon, production method, results weapon operation and utilization, duration of exposure, type of structural connections between interaction objects, number of conditions that apply when firing and the forming traces.

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