The Benefits of 3D and 4D Synthesis of Marine Geophysical Datasets for Analysis and Visualisation of Shipwrecks, and for Interpretation of Physical Processes over Shipwreck Sites: A Case Study off Methoni, Greece

Through the study of three wreck sites over the Methoni Bay (Greece), this article presents the benefits of spatio-temporal integration and correlation of marine geophysical data in a common three-dimensional (3D) geographical platform for analysis, and visualisation of shipwreck ruins and for interpretation of physical processes over wreck sites. The integration of 3D datasets has been proven to support identification of archaeological features over and under the seafloor, evaluation of the wreck structure state, and assessment on the wrecking event and the wreck site arrangement at that time, due to interactive cross-examination of datasets acquired in separate planes. Data synthesis is fundamental for 3D digital reconstruction of scattered and partially buried shipwreck ruins in complex geology as every dataset acts as interpretive and complimentary to each other. It is also shown that data synthesis highlights the signatures of physical processes over the wreck sites, and the interaction between the processes and the shipwrecks. The analysis of spatio-temporal, four-dimensional (4D) integrated datasets has proved to provide knowledge on the wreck site evolution through time, and highlights the disturbance of underwater archaeological resources due to human activities. The study has also shown that the creation of a shoalest depth true position bathymetric surface supports the realistic 3D wreck representation over the seafloor.

First-principles study of electronic structures, thermodynamic, and thermoelectric properties of the new Rattling Full Heusler compounds Ba2AgZ (Z = As, Sb, Bi)

The ab initio calculations based on the density functional theory (DFT) using the self-consistent Full potential linearized augmented plane wave (FPLAPW) method were performed to explore the electronic structures, thermodynamic and thermoelectric properties of new rattling Full Heusler alloys Ba2AgZ (Z = As, Sb, Bi). Results showed that the AlCu2Mn-type structure state is energetically the most stable structure. The results show that the electronic property of these cubic Rattling Heusler alloys have a semiconducting behavior with indirect band gaps Eg (L-D). The predicted band gaps were found to be 0.566, 0.548 and 0.433 eV for Z = As, Sb and Bi, respectively. The thermodynamic properties comprising the thermal expansion coefficient, heat capacity, entropy and Debye temperature parameter were evaluated at various pressures from 0 to 15 GPa. Thermoelectric properties of the Ba2AgZ (Z= As, Sb, Bi) materials are additionally computed over an extensive variety of temperature and it is discovered that all compounds exhibit ultralow thermal conductivity, good Seebeck coefficients and large high power factors, thus resulting they are suitable for use in thermoelectric device applications.

State, structure and dynamics of crime in the sphere of housing and communal services

Crimes in the housing and communal sphere cause considerable economic damage to the individual, society and the state. This problem is constantly addressed at all levels of government. The purpose of the study is to examine statistical indicators and to identify trends and patterns of crime in the field of housing and communal services. The article provides a criminological analysis of crime in the field of housing and communal services, its concept, structure, state and dynamics are considered, on the basis of general and special methods of scientific knowledge. The scientific study is based on statistical and analytical data of the Prosecutor’s Office Russia. It is based on the number and structure of registered crimes in the field of housing and communal services in the period from 2014 to 2020. The structure and dynamics of corruption and economic crime in the sphere of housing and communal services are presented. The author concludes that (44–52 %) of all crimes committed in the sphere of housing and communal services are corruptive. The author in a certain period observed an increase in crimes in the sphere of housing and communal services. In her opinion, this is due to changes in regulatory framework in the housing and utilities sector and an increased attention paid to the problems inherent to this sector by all the agents involved: state bodies, the country’s leadership and society. As a result of the analysis, the author concludes about the unstable dynamics, characterized by jumps of both positive and negative nature, increased latency and a high crime rates in the housing and communal services sector.

AUTOMATED SENSORY MONITORING SYSTEM PROTOTYPE FOR CONTINUOUS MONITORING OF MATERIAL AND STRUCTURE STATE

The goal of this article is to solve problems of automated monitoring systems of industrial and aviation constructions. Based on the latest research results, the most cost-effective solutions are covered, and a practical solution is offered. This article is part of the scientific project “Development of an integrated sensor system for material and structure monitoring”. The article describes the problem and suggests a practical solution for an integrated sensor system for material and structure monitoring prototype.

Experimental Confirmation of Multiple Co-Existent DNA Secondary Structures using Low-Yield Bisulfite Sequencing

The prediction of DNA secondary structures from DNA sequences using thermodynamic models is imperfect for many biological sequences, both due to insufficient experimental data for training and to the kinetics of folding that lead to metastable structures. Here, we developed low-yield bisulfite sequencing (LYB-seq) to query the secondary structure states of cytosine (C) nucleotides in thousands of different DNA oligonucleotides on a single-molecule level. We observed that the reaction kinetics between bisulfite and C nucleotides is highly dependent on the secondary structure state of the C nucleotides, with the most accessible C nucleotides (those in small hairpin loops) reacting 70-fold faster than those in stable duplexes. Next, we developed a statistical model to evaluate the likelihood of an NGS read being consistent with a particular proposed secondary structure. By analyzing thousands of NGS reads for each DNA species, we can infer the distribution of secondary structures adopted by each species in solution. We find that 84% of 1,057 human genome subsequences studied here adopt 2 or more stable secondary structures in solution.

ANALYSIS OF INFORMATION AND METHODOLOGICAL SUPPORT FOR ASSESSING THE EFFECTIVENESS OF PUBLIC CIVIL SERVANTS IN THE SUBJECTS OF THE RUSSIAN FEDERATION

Subject. Introduction of a unified information system for personnel management of the State civil service of the Russian Federation. Topic. Analysis of information and methodological support for assessing the effectiveness of civil servants in the subjects of the Russian Federation. Goals. Development of recommendations based on the analysis of information and methodological support for assessing the effectiveness of civil servants in the subjects of the Russian Federation. Methodology. The research uses the methods of logical and comparative analysis of the practice of introducing elements of the digital economy in the management of the personnel of the state civil service of the Russian Federation. Results. Based on the analysis of the current situation in the field of information and methodological support for assessing the effectiveness of civil servants in the subjects of the Russian Federation, problems are identified, proposals are formulated and reasoned in the form of changes to the existing information system. Scope of application. The sphere of personnel management of the State Civil Service of the Russian Federation. Conclusions. The introduction of information technologies in the civil service in the constituent entities of the Russian Federation and the automation of the assessment of the effectiveness of personnel is a rather labor-intensive process that requires the use of modern methods and tools to improve the efficiency of public administration in general. Keywords: information system, personnel structure, state civil service

Use of multi-temporal Earth remote sensing data for the assessment of agricultural area

The article discusses the procedure for identifying unused agricultural soils for their use in economic circulation. The object of the research is the Belgorod district of the Belgorod Region, Russian Federation. Methods of planned soil inventory form the basis for identifying unused agricultural soil, the main purpose of which is to assess the reasons for land retirement from active economic circulation, cultural and technical state of landholdings and to prepare recommendations for commissioning soils into agricultural circulation. Agriculture is a vast and vital branch of the national economy of the Russian Federation It is necessary to introduce modern technologies, state-of-the-art machinery, investments as well as to put into action several land management measures in order to facilitate the development of this sector of the national economy. The data provided by Earth remote sensing gives the necessary and relevant information to the customers regarding structure, state and detailed characteristics of agricultural soils and other assets of agricultural production; the line-up, state and growth of crops. Earth remote sensing data allows to solve more complex analytical tasks, such as forecasting crop yield and calculating the optimal doses of fertilizers. It is convenient to use Earth remote sensing data for monitoring and analyzing soils. With the assistance of that data, based on satellite images, it is possible to identify not only the types of crops, but also the degree of weediness, state of yield, accurate field boundaries, sown area and so on and so forth. The aim of this project is to perform automated decryption in ScanEx Web Geomixer software.

Features of structure state and magnetic properties of mono- and polycrystalline LiNiPO4 and LiNi0.9Co0.1PO4

Pressure leaching is one of the most high-demanded and promising hydrometallurgical technology, which allows one to obtain high efficiency. Taking into account the shutdown of zinc plant in Vladikavkaz («Electrozinc, Lls.») searching the modern methods of zinc production is of current interest. In this work, the issue was observed on influence of temperature and sodium lignosulfonate (SL) onto the zinc and iron sulfides behavior during pressure leaching of zinc sulfide concentrate from the Uchalinsk deposit. Temperature increasing from 130 to 150o C led to decreasing of zinc extraction and sulfur-sulfide pellets formation; that indicated increasing the zinc sulfide wettability by the molten sulfur due to reduction of viscosity and surface tension of molten sulfur. Increasing the LSN dosage promoted running up of the absolute value of the zinc extraction. The highest growth of the zinc extraction (17.39 %) was obtained at 0.2 g/dm3 LSN. Further increasing of the LSN concentration on 0.2 g/dm3 (up to 0.4, 0.6, 0.8 g/dm3 ) led to double decrease of their effectiveness in reference to previous LSN concentration.