12 research outputs found
Neural network natural language processing tools for identifying personal priorities in the project performers selection in the field of smart agriculture
The identification of the analyzed individual’s personal priorities is proposed to be reduced to solving the classification problem based on the analysis of person’s text Internet traces using neural network technologies of natural language processing. As a training sample, it is proposed to use a set of text document vectors and the corresponding marks of personal priority classe
Assessing the efficiency of robot communication
A model is proposed for estimating the efficiency of communication by robots capable of social interaction with humans. A generalized index of the robots effectiveness in communication is derived. That index is calculated by means of a fuzzy deduction modul
Status and Prospects of ZnO-Based Resistive Switching Memory Devices
In the advancement of the semiconductor device technology, ZnO could be a prospective alternative than the other metal oxides for its versatility and huge applications in different aspects. In this review, a thorough overview on ZnO for the application of resistive switching memory (RRAM) devices has been conducted. Various efforts that have been made to investigate and modulate the switching characteristics of ZnO-based switching memory devices are discussed. The use of ZnO layer in different structure, the different types of filament formation, and the different types of switching including complementary switching are reported. By considering the huge interest of transparent devices, this review gives the concrete overview of the present status and prospects of transparent RRAM devices based on ZnO. ZnO-based RRAM can be used for flexible memory devices, which is also covered here. Another challenge in ZnO-based RRAM is that the realization of ultra-thin and low power devices. Nevertheless, ZnO not only offers decent memory properties but also has a unique potential to be used as multifunctional nonvolatile memory devices. The impact of electrode materials, metal doping, stack structures, transparency, and flexibility on resistive switching properties and switching parameters of ZnO-based resistive switching memory devices are briefly compared. This review also covers the different nanostructured-based emerging resistive switching memory devices for low power scalable devices. It may give a valuable insight on developing ZnO-based RRAM and also should encourage researchers to overcome the challenges
The Main Causes of Activation Two Large Landslides of the Debed River Gorge in XXI Century
Specialists have estimated about 3000-3500 active landslides in the territory of the Republic of Armenia, which occupy 8-10% of the territory and threaten 15% of the population of the Republic of Armenia. The average annual damage to them is about $10-30 million. There are two major landslides in the 21st century, located in the Devbed river gorge, threatening the only functioning railway connecting Armenia to Georgia, one of the main highways. One of them is the landslide-collapse of Ayrum, which suddenly became active in 2011 and took the lives of 5 people and caused huge material losses. A large part of the railway was destroyed and the highway became impassable. The second landslide, which became active in 2018 was near the town of Tumanyan. Here, a huge number of stones were moved, landslide tongue was approached to the transport infrastructure, which posed a serious threat to the republic. Our on-site studies have shown that the causes of both landslides are a result of anthropogenic impact. The article suggests specific measures to prevent landslides
The Impact of Climate Change on Slope Geological Processes (With the Example of Hovk Community Landslide)
Climate change in mountainous areas increases the likelihood of activation of slope geological processes. Due to climate change, the total amount of precipitation in the South Caucasus has decreased by 10-15%. At the same time, the intensity of precipitation increases, as a result of which surface and groundwater flows increase. Increased intensity of surface erosion and the rise of groundwater level, especially in steep slopes, contribute to activation of landslides or their reactivation. For sustainable and safe development of communities, it is very important to study the risks and hazards of climate change, to assess them, and to plan the measures to mitigate the effects
Seismic Risk Features of a Destructive Earthquake Zone
The features of changes in the seismic risk of the zone of a strong earthquake, associated with both destructive consequences and the processes of these recovery. These two factors are the main reason for the change in the seismic vulnerability of preserved (not destroyed) and newly constructed buildings and structures, therefore, changes in the seismic risk of a fairly large area. This problem is not well understood, despite its importance in terms of assessing and reducing risk. The article proposes to divide the zone into subzones on the basis of a specific earthquake, taking into account the intensity and scale of destruction of buildings. This approach makes it possible to more reliably establish the general and local features of the change in the seismic risk of the restored earthquake zone
A new landslide inventory for the armenian lesser caucasus: Slope failure morphologies and seismotectonic influences on large landslides
Landslide hazard analyses in Armenia require consideration of the seismotectonic context of the Lesser Caucasus. As it is located near the center of the Arab-Eurasian collision, the Lesser Caucasus is characterized by its complex geology, dense fault network and mountainous relief; it is marked by recent volcanic and seismic activity largely influencing slope stability at different scales. We therefore sought to identify all major landslides in the Armenian Lesser Caucasus and to understand the environmental factors contributing to regional landslide susceptibility. We performed spatial and size-frequency analyses using two landslide catalogues as inputs: “Georisk”, provided by the Georisk Scientific Research Company, and “Matossian”, herein. Our spatial analyses show that landslide susceptibility depends on many factors according to the area considered: near faults, a tectonic influence on slope stability is clearly observable, whereas high concentrations of landslides in northern mountain regions, marked by a wetter climate and far from known active faults, show that climatic factors also strongly contribute to slope-failure potential. The influence of volcanoes and volcanic deposits on the development of mass movements is unclear and requires further analysis. The aforementioned inventories do not include any records of volcanic flank collapses, although we expect at least one case in the eastern Lesser Caucasus. © 2020 by the authors. Licensee MDPI, Basel, Switzerland