Comprehensive Analysis Method Research Articles

Indonesia, Malaysia, and Turkey comparative analysis of labour market

This study aims to examine labour market indicators in developing industrial countries like Indonesia, Malaysia, and Turkey between 1999 and 2019. Indonesia, Malaysia, and Turkey’s labour market indicators are taken into consideration. ILO's estimation taken from the Data Bank World website is used when comparing these countries' labour market indicators. The official statistics on the websites of these countries also contributed to the study. The years are chosen explicitly as after the 1999 crisis and 2008 crises, after 2015. Even though each country’s dynamics vary, nearly all three countries implemented import substitution and export policies simultaneously and they exposed themselves to global markets during the same period. When the labour market indicators are assessed, the 15 – 64 age-old active group population is in constant growth, while the passive group is in decline. In this study, each country's labour market indicator is examined for the periods mentioned above, and the comprehensive analysis method is used. By reviewing labour literature, the labour markets and their implementations are assessed and compared with each other. Keywords: Emerging Industrialized Countries; Indonesia; Labour Market Indicators; Malaysia; Turkey.

Implementation of Russian Universities’ Strategies in the Context of International Academic Rankings

The article considers the implementation of strategies for the integration of Russian universities into the system of world academic rankings. The relevance of this work is dictated by the active introduction of Russian universities into the world market of educational services and the modernization of Russian higher education and science in the context of the globalization of these social institutions. For the effective integration of Russian universities into the global educational space, it is necessary to carry out a consistent modernization of both managerial and educational processes, as well as the infrastructure of universities and existing educational programs and standards. One of the aspects of introducing world educational standards into the practice of Russian higher education is the participation of Russian universities in world academic rankings. For the consistent and systematic promotion of the positions of Russian universities in world academic rankings, with the support of the Government of the Russian Federation and the Ministry of Science and Higher Education, national projects were developed to support leading Russian higher education institutions, programs to support innovative development and modernization, and individual roadmaps were drawn up. Development of universities, which allowed them to create their own development strategies and inclusion in the international educational market. The purpose of this article is to consider various aspects of the implementation of the strategies of Russian universities for inclusion in the world academic rankings and systematization of the results achieved so far. The work uses the methods of statistical, comprehensive and comparative analysis in relation to development strategies, roadmaps of Russian universities, as well as to the published results of their promotion in the system of international academic rankings. The result of this work was the derivation of general trends and patterns of development of Russian universities in the context of world academic rankings and the systematization of a set of measures aimed at their further systematic advancement. The positive and negative aspects of the participation of Russian universities in the system of world academic rankings, as well as the influence of the global system for assessing education and science on the Russian sphere of higher education, are analytically derived.

КОМПЛЕКСНА ОЦІНКА ПОКАЗНИКІВ ЕФЕКТИВНОСТІ ІНВЕСТИЦІЙ БУДІВНИЦТВА, РЕКОНСТРУКЦІЇ ТА РЕМОНТІВ АВТОМОБІЛЬНИХ ДОРІГ: НАУКОВО-МЕТОДИЧНИЙ АСПЕКТ

A historical review of methods for evaluation the economic efficiency of investment projects is performed. The analysis of modern methods of efficiency evaluation in the field of construction, reconstruction and repairing of roads is carried out. The main provisions and principles of comprehensive evaluation of construction, reconstruction and repairing of roads are identified and generalized methodological approaches to determination of the overall socio-economic efficiency of financing works on new construction, reconstruction and repairing of public roads, which provides for the relevant stages of: operational condition of the road; socio-economic efficiency of road reconstruction and repairing; environmental efficiency of road construction, reconstruction and repairing . Introduction The most important requirement for the functioning of modern economic systems is a developed network of roads. Integrative development of the national economy is faced with the need to build new and improve existing international transport corridors, which increases their capacity and transit capacity, exports of motor transport services and reduces the time of connection and delivery of goods and passengers by road. Comprehensive evaluation of socio-economic and environmental efficiency of construction, reconstruction and repairing of public roads is a tool of public policy aimed at implementing the principles of sustainable economic development. In terms of program-targeted planning of public roads generalization and further development of scientific and methodological approaches to comprehensive evaluation of the effectiveness of investment projects for construction, reconstruction and repairing of roads is one of the key tasks to improve the quality of existing roads and new transport routes considering their socio-economic and environmental efficiency. Problem statement. During the evaluation of projects for the construction, reconstruction and repairing of public roads, it is need to consider not only the effectiveness of project investments, but also the social and environmental effects associated with their implementation. Generalization of methodological approaches to the comprehensive evaluation of projects for construction, reconstruction and repairing of roads considering their socio-economic and environmental efficiency and the development of methodological tools for evaluation additional effects is a complex scientific problem. Thus the comprehensive evaluation of efficiency of construction and reconstruction of the road has to characterize conformity of its transport and operational condition to the level of social and economic and ecological requirements which are formed taking into account the state, territorial, public and private interests. Purpose and task. The purpose of the article is to substantiate at the scientific and methodological level the feasibility of a comprehensive evaluation the socio-economic and environmental efficiency of construction, reconstruction and repairing of public roads based on the generalization of existing methodological approaches to investment efficiency calculation. The task of the article is to analyze methodological approaches to evaluation the effectiveness of investment projects, determination of their features and basing on their generalization substantiation of a comprehensive approach to the overall evaluation of socio-economic efficiency of investment in construction, reconstruction and repairing of public roads. Materials and methods During the article preparation, the current methods of evaluation the effectiveness of capital expenditures (investments), designing and regulatory documents regarding evaluation the socio-economic efficiency of investments in the construction, reconstruction and repairing of roads were used. In the process of study the methods of comprehensive and system analysis, abstract-logical, method of comparative analysis and others were used. Results The main provisions and principles of comprehensive evaluation of construction, reconstruction and repairing of roads are determined and the unified methodology for determination the overall socio-economic efficiency of financing of new construction, reconstruction and repairing of public roads, which provides for the relevant evaluation stages: transport and operational condition of the road; socio-economic and environmental efficiency of construction, reconstruction and repairing of the road. Conclusions During evaluation the socio-economic efficiency of investment in the development of public roads has to be used a system of indicators that characterize the results of related effects at the macro-and micro-economic level and in the social sphere. In this context, in order to optimize the processes of prioritization and priority of financing works on new construction, reconstruction and repairing of public roads within the relevant legal and regulatory field, methodological approaches to determination the overall socio-economic efficiency of financing works on new construction, reconstruction and repairing of public roads. The application of common methodological approaches to determining the overall socio-economic efficiency of financing new construction, reconstruction and repair of roads involves long-term planning and financing of clearly defined tasks and measures for the restoration and development of public roads. Keywords: construction, reconstruction and repairing, public roads, comprehensive evaluation, overall socio-economic efficiency, environmental efficiency, investment efficiency indicators.

Metabolic Footprinting of Microbial Systems Based on Comprehensive In Silico Predictions of MS/MS Relevant Data.

Metabolic footprinting represents a holistic approach to gathering large-scale metabolomic information of a given biological system and is, therefore, a driving force for systems biology and bioprocess development. The ongoing development of automated cultivation platforms increases the need for a comprehensive and rapid profiling tool to cope with the cultivation throughput. In this study, we implemented a workflow to provide and select relevant metabolite information from a genome-scale model to automatically build an organism-specific comprehensive metabolome analysis method. Based on in-house literature and predicted metabolite information, the deduced metabolite set was distributed in stackable methods for a chromatography-free dilute and shoot flow-injection analysis multiple-reaction monitoring profiling approach. The workflow was used to create a method specific for Saccharomyces cerevisiae, covering 252 metabolites with 7 min/sample. The method was validated with a commercially available yeast metabolome standard, identifying up to 74.2% of the listed metabolites. As a first case study, three commercially available yeast extracts were screened with 118 metabolites passing quality control thresholds for statistical analysis, allowing to identify discriminating metabolites. The presented methodology provides metabolite screening in a time-optimised way by scaling analysis time to metabolite coverage and is open to other microbial systems simply starting from genome-scale model information.

Ultrahigh-performance supercritical fluid chromatography for intraclass separation of lipids: Investigation of general principles

Powerful chromatographic techniques are required for lipidomic analyses due to the extreme complexity of natural lipidomes. In the past few years, ultrahigh-performance supercritical fluid chromatography (UHPSFC) has proven to be a good alternative to conventional LC methods for comprehensive lipidomic analysis. The goal of this work was to study UHPSFC intraclass separation of lipids according to the fatty acyl composition. The effects of column chemistry, mobile phase composition and gradient, flow rate, back pressure, temperature, and column coupling on intraclass separation of lipids were widely investigated and discussed. In general, UHPSFC exhibited interclass selectivity together with intraclass separation of lipids according to their total number of double bonds and acyl chain lengths. Moreover, separations of diacylglycerol and lysophosphatidylcholines regioisomers were achieved in some cases. The nature of the stationary phase showed the most prominent effect on UHPSFC intraclass selectivity, while other chromatographic conditions were used for partial improvement in resolution of lipid species. An octadecyl-based stationary phase showed excellent separation of nonpolar lipid species, including triacylglycerol isobars; however, it provided poor peak shapes and limited retention time reproducibility for polar lipids. Diol- and 1-aminoanthracene-based columns provided the best inter- and intraclass resolution of most lipids. The main benefit for UHPSFC separation of complex lipid samples is the combination of the acyl chain/double bond intraclass separation of lipids with excellent lipid class selectivity, which can facilitate mass spectrometry detection and quantitation of trace species without ion suppression effects.

Spatial distribution prediction of pre-Sinian volcanic and metamorphic rocks in Xinhenan-Sandaoqiao area, Northern Tarim Basin

The main type of oil and gas reservoir in the Xinhenan-Sandaoqiao area is buried hills. The distribution pattern and scale of reservoirs in this area are obviously controlled by pre-Sinian basement strata. However, the lithologic combination and spatial distribution pattern of the pre-Sinian basement in this area are still unclear. We have used the method of multifactor comprehensive analysis to study the spatial distribution of pre-Sinian basement volcanic and metamorphic rocks. First, we determine the lithology and lithologic association of volcanic and metamorphic rocks according to cores and thin sections. Guided by the seismic reflection characteristics of different lithologic combinations, different lithologic combinations are identified on the profile by combining the seismic reflection characteristics of single well and multiwell. Second, using cluster analysis technology, we select three seismic attributes that are sensitive to lithology from 10 attributes, make crossplots of the three seismic attribute values, and ensure the distribution range of attribute values corresponding to different lithologic combinations for plane lithologic identification. Finally, we combine the recognition results of the plane and the profile to summarize the plane lithology distribution of the pre-Sinian basement surface. Six distribution types were identified deep metamorphic bedrock area in Kuqu depression, dynamic mixed metamorphic rock and intermediate-acidic intrusive rock area, metamorphic bedrock in thrust napple slopes area, thermal contact metamorphic rock area, intermediate-acidic intrusive rock area, and dynamic metamorphic rock area and gneiss area in faulted uplift core.

Understanding the structure and composition of recalcitrant oligosaccharides in hydrolysate using high-throughput biotin-based glycome profiling and mass spectrometry

Novel Immunological and Mass Spectrometry Methods for Comprehensive Analysis of Recalcitrant Oligosaccharides in AFEX Pretreated Corn Stover. Lignocellulosic biomass is a sustainable alternative to fossil fuel and is extensively used for developing bio-based technologies to produce products such as food, feed, fuel, and chemicals. The key to these technologies is to develop cost competitive processes to convert complex carbohydrates present in plant cell wall to simple sugars such as glucose, xylose, and arabinose. Since lignocellulosic biomass is highly recalcitrant, it must undergo a combination of thermochemical treatment such as Ammonia Fiber Expansion (AFEX), dilute acid (DA), Ionic Liquid (IL) and biological treatment such as enzyme hydrolysis and microbial fermentation to produce desired products. However, when using commercial fungal enzymes during hydrolysis, only 75–85% of the soluble sugars generated are monomeric sugars, while the remaining 15–25% are soluble recalcitrant oligosaccharides that cannot be easily utilized by microorganisms. Previously, we successfully separated and purified the soluble recalcitrant oligosaccharides using a combination of charcoal and celite-based separation followed by size exclusion chromatography and studies their inhibitory properties on enzymes. We discovered that the oligosaccharides with higher degree of polymerization (DP) containing methylated uronic acid substitutions were more recalcitrant towards commercial enzyme mixtures than lower DP and neutral oligosaccharides. Here, we report the use of several complementary techniques that include glycome profiling using plant biomass glycan specific monoclonal antibodies (mAbs) to characterize sugar linkages in plant cell walls and enzymatic hydrolysate, matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS) using structurally-informative diagnostic peaks offered by negative ion post-secondary decay spectra, gas chromatography followed by mass spectrometry (GC–MS) to characterize oligosaccharide sugar linkages with and without derivatization. Since oligosaccharides (DP 4–20) are small, it is challenging to mobilize these molecules for mAbs binding and characterization. To overcome this problem, we have applied a new biotin-coupling based oligosaccharide immobilization method that successfully tagged most of the low DP soluble oligosaccharides on to a micro-plate surface followed by specific linkage analysis using mAbs in a high-throughput system. This new approach will help develop more advanced versions of future high throughput glycome profiling methods that can be used to separate and characterize oligosaccharides present in biomarkers for diagnostic applications.

Multi-Objective Design Optimization of a Tubular Permanent Magnet Linear Generator With 120° Phase Belt Toroidal Windings

The utilization of 120° phase belt toroidal windings (120°-TWs) can bring power density improvement in a tubular permanent magnet linear generator (TPMLG). Unfortunately, the TPMLG with 120°-TWs (120°-TPMLG) usually involve multiple structural parameters, and the interaction or even conflict among those structural parameters would have strong impact on generator performances in the design optimization process. To alleviate this problem, a multi-objective design optimization method is proposed to conduct a multi-objectives optimization, which aims to obtain the high-power density and low-detent force. First, the comprehensive sensitivity analysis method, namely global sensitivity analysis, is adopted to evaluate the sensitivities of the structural parameters on the performances of the 120°-TPMLG. According to the evaluation results, the structural parameters are divided into three levels: non-sensitive level, mild-sensitive level, and strong-sensitive level. Then, to improve the whole design optimization efficiency, the direct-screening method, the surface method, and the genetic algorithm is implemented in the three levels, respectively. And the optimal structural parameters of the 120°-TPMLG are finally determined. To verify the feasibility of the 120°-TPMLG and the effectiveness of the proposed design optimization method, the performances of the optimal 120°-TPMLG are analyzed and compared with the initial one and the same dimensions TPMLG with traditional toroidal windings (T-TPMLG) in detail. It shows that the performances of the optimal 120°-TPMLG meet the design requirements. Moreover, the detent force is largely decreased and the power density is notably improved. The results prove that the proposed multi-objective design optimization method is available for the 120°-TPMLG.

A comprehensive analysis method of spatial prioritization for urban flood management based on source tracking

Flooding is one of the most frequent and disastrous natural hazards that can have catastrophic impacts on human society and urban infrastructure. Increasing the incidence of urban flooding highlights the need for reliable flood mitigation strategies that can effectively minimize losses owing to disasters. The strategic placement of flood mitigation measures is undoubtedly the key to achieving maximum effectiveness of flood reduction schemes. The physical characteristics of the site and knowledge of regional relevance play an important role in determining the location of appropriate flood mitigation measures. In the case of limited resources, it is crucial to prioritize areas for installation of flood mitigation measures. Therefore, an indicator-based method was developed in this study to identify and prioritize sites to concentrate limited resources where they are needed the most. Based on the source tracking method, a tracer-aided urban flood model was developed to study the impact of direct and indirect connections between urban systems, explore their relative importance in the network, and prioritize related risks to improve resource allocation efficiency. Longkungou drainage district of Haikou City was selected as the study area to determine the prioritization of catchments for flood mitigation. The results indicated that high prioritization sites are in the upstream of the urban areas with prioritization decreasing downstream, and the prioritization of interventions presents a spatial trend of “high south and low north”. This study demonstrates the novelty of a tracer-aided urban flood model in flood management and highlights the spatial connectivity between flood source areas and flood hazard areas. The prioritization scheme of urban catchment flood mitigation measures proposed in this study provides valuable guidance for policy makers and urban planners who wish to exploit the approach for flood mitigation.

Safety Influencing Factors and Management Countermeasures of Patients Transferred from ICU in Transition Period Based on Intelligent Processor Three-Dimensional Quality Model.

With the development of science and technology of the times, the level of medical care is constantly improving. For patients transferred from ICU, the intelligent processor 3D quality model technology has gradually played an important role in clinical treatment and has become a new type of attention. In order to understand the implementation status of transitional care and the feelings of transitional care for patients transferred from ICU and understand the views of transitional care-related department doctors on transitional patient care and the role that the intelligent processor three-dimensional quality model can play, this article passed a review of the city ICU transferred patients from a hospital that conducted related investigations, reviewed related literature, conducted interviews with professionals, etc., collected relevant information, constructed case templates, and created a clinical research model using comprehensive quantitative and qualitative analysis methods. The results of the study found that, after treatment, patients transferred from the ICU based on the intelligent processor's three-dimensional quality model have higher physical activity than patients treated by other methods, the ratio is more than 20%, and the postoperative recovery efficiency of patients is higher than 15% and more. This shows that the three-dimensional quality model based on the intelligent processor can improve the important role in the transition period of patients transferred from ICU.

Integrating bioclimatic factors and secondary metabolism to predict the suitable producing area of plants with high specific metabolite content in a real-world environment - a case of Carthamus tinctorius L.

The secondary metabolism of plants is greatly influenced by bioclimatic factors. Few studies on comprehensive ecometabolomics responses to bioclimatic factors in the real-world environment have been reported. As a case of safflower (Carthamus tinctorius L.) with a high flavonoid content, we combined bioclimatic factors, a widely targeted metabolome, and weighted metabolite coresponse network analysis to explore how plants adjust their secondary metabolite content in response to the different climates. A total of 441 metabolites were detected, of which kaempferol and its derivatives were the significant eigenmetabolites in MEblue and MEbrown. The mean temperature of the warmest quarter (bio10) was the driving bioclimatic factor (36.44% contribution). The top three countries with potentially suitable producing areas of C. tinctorius are German, France and China, whose top 3 cities are Sichuan, Yunn, and Guizhou. This study established an innovative method of comprehensive eco-metabolomics analysis to predict the suitable production area of plants with high specific secondary metabolite contents and instruct artificial cultivation.

Petri nets and ODEs as complementary methods for comprehensive analysis on an example of the ATM\u2013p53\u2013NF-kappaB signaling pathways

Intracellular processes are cascades of biochemical reactions, triggered in response to various types of stimuli. Mathematical models describing their dynamics have become increasingly popular in recent years, as tools supporting experimental work in analysis of pathways and regulatory networks. Not only do they provide insights into general properties of these systems, but also help in specific tasks, such as search for drug molecular targets or treatment protocols. Different tools and methods are used to model complex biological systems. In this work, we focus on ordinary differential equations (ODEs) and Petri nets. We consider specific methods of analysis of such models, i.e., sensitivity analysis (SA) and significance analysis. So far, they have been applied separately, with different goals. In this paper, we show that they can complement each other, combining the sensitivity of ODE models and the significance analysis of Petri nets. The former is used to find parameters, whose change results in the greatest quantitative and qualitative changes in the model response, while the latter is a structural analysis and allows indicating the most important subprocesses in terms of information flow in Petri net. Ultimately, both methods facilitate finding the essential processes in a given signaling pathway or regulatory network and may be used to support medical therapy development. In the paper, the use of dual modeling is illustrated with an example of ATM/p53/NF-kappaB pathway. Each method was applied to analyze this system, resulting in finding different subsets of important processes that might be prospective targets for changing this system behavior. While some of the processes were indicated in each of the approaches, others were found by one method only and would be missed if only that method was applied. This leads to the conclusion about the complementarity of the methods under investigation. The dual modeling approach of comprehensive structural and parametric analysis yields results that would not be possible if these two modeling approaches were applied separately. The combined approach, proposed in this paper, facilitates finding not only key processes, with which significant parameters are associated, but also significant modules, corresponding to subsystems of regulatory networks. The results provide broader insight into therapy targets in diseases in which the natural control of intracellular processes is disturbed, leading to the development of more effective therapies in medicine.

Head Impact Exposure and Biomechanics in University Varsity Women's Soccer.

Soccer is a unique sport where players purposefully and voluntarily use their unprotected heads to manipulate the direction of the ball. There are limited soccer head impact exposure data to further study brain injury risks. The objective of the current study was to combine validated mouthpiece sensors with comprehensive video analysis methods to characterize head impact exposure and biomechanics in university varsity women’s soccer. Thirteen female soccer athletes were instrumented with mouthpiece sensors to record on-field head impacts during practices, scrimmages, and games. Multi-angle video was obtained and reviewed for all on-field activity to verify mouthpiece impacts and identify contact scenarios. We recorded 1307 video-identified intentional heading impacts and 1011 video-verified sensor impacts. On average, athletes experienced 1.83 impacts per athlete-exposure, with higher exposure in practices than games/scrimmages. Median and 95th percentile peak linear and peak angular accelerations were 10.0, 22.2 g, and 765, 2296 rad/s2, respectively. Long kicks, top of the head impacts and jumping headers resulted in the highest impact kinematics. Our results demonstrate the importance of investigating and monitoring head impact exposure during soccer practices, as well as the opportunity to limit high-kinematics impact exposure through heading technique training and reducing certain contact scenarios.

Energy and exergy analysis of a downstream single-row air washer at different droplet diameters for air cooling application

This study proposes a downstream single-row air washer for air cooling. The theoretical energy and exergy balance models were established at different droplet diameters and verified by the experimental data. Based on the abovementioned theoretical relationship, the single performance indicator of heat exchange efficiency (HEE) and exergy efficiency was quantitatively analyzed; a comprehensive analysis method of two indicators was proposed, combining HEE and exergy efficiency, and a numerical simulation was carried out. Results show that the smaller the droplet diameter and the larger the water–air ratio, the lower the dry-bulb temperature of the outlet air and the higher the HEE and exergy flux destruction. When the droplet diameter is less than 440 μm, the droplet diameter does not affect exergy efficiency and dry-bulb temperature. When the droplet diameter is larger than 440 μm, the droplet diameter is positively correlated with the air outlet dry-bulb temperature and exergy efficiency; in contrast, the water–gas ratio is negatively correlated with the air outlet dry-bulb temperature. An engineering case reveals that when the air outlet temperature is less than 34°C, the critical water–gas ratio can be set as 2.6 (mass ratio). At this time, the HEE is more than 90%, the exergy efficiency is more than 60%, and the critical value of droplet diameter is 440 μm. The research results provide an essential theoretical basis for the optimization of engineering design calculation.

An intelligent recoil controller for riser system based on fuzzy control theory

Riser recoil control is a complicated nonlinear control problem. An intelligent control methodology is proposed to control the complicated riser recoil response based on fuzzy control theory. A dynamic nonlinear model of drilling riser/tensioner coupling system is established for riser recoil analysis. The riser system is divided into several elements and the coupling effect between the riser and discharged mud is considered in the dynamic model. A fuzzy controller for the opening of the recoil control valve is designed for the riser recoil control. A comprehensive analysis method is proposed for riser recoil control simulation. Simulation results show that the designed fuzzy controller can effectively control the riser recoil response. The adaptability of the designed controller is also proved by the simulation results. The application of the designed controller can reduce the risk of accidents during riser recoil process.

The method of comprehensive optimization analysis for catamaran unmanned vehicle

In order to obtain the optimal design of catamaran unmanned vehicle type, based on a USV type, and a mathematical model is created. Use the form of the product of the power exponential function for each performance objective function, and then combine the penalty function to construct the fitness function suitable for the catamaran unmanned, combine the constructed optimization mathematical model with the intelligent optimization algorithm, and design the comprehensive optimization program for the vehicle type. Based on the above software platform, the research and analysis of genetic algorithm, particle swarm algorithm and chaos algorithm are conducted. The results show that the highest efficiency of selected catamaran ship model; further analysis of the four ship types M08, M10, M15, M16in the two different high-speed sections of the optimal ship type, and finally get the M10 optimal, so as to optimize the design.

Территориальное планирование и управление системой сельского расселения Восточной Сиби-ри XIX – начала XX вв.

This article studies territorial transformations, along with the management of rural settlements, carried out by the Russian government in the 19th–early 20th centuries. The methods of historiographic and cartographic analysis, as well as the study of archival sources and statistical data, were used. The work was carried out in two stages: identification of the land-use pattern at the state level within the contem-porary borders of administrative structure; study of the management of the relocation process and def-inition of basic principles in the planning of migration sites. A retrospective analysis of the land use as-sociated with a rural community was presented as diagrams and cartographic materials reflecting the state of territorial development in migration areas. The collected historiographic materials, statistical data and regulatory support reflect the main methods for managing the relocation process and the ex-perience of planning rural settlement at the state level. The migration areas were allocated from free state reserves in the form of individual farms and plots of land. The process management was based on a system of committees involving various specialists, whose tasks included the organisation of so-cial and engineering infrastructure. The performed study of the settlement territory, the allocation of lands for farming societies and minorities, the ordering of the existing land use and the identification of the economic and agricultural potential of the region comprise the methods of the preliminary compre-hensive analysis of the territory during settlement planning. The obtained results are essential for ana-lysing the dynamics of territorial development and studying methods and practices of territorial plan-ning of the rural settlement system.

An integrated analysis of enterprise economy security

With the complication of the business environment of commercial economic activity, competition intensifies, which threatens the bankruptcy of enterprises, the prevention of which requires quality monitoring and timely identification of crises using methods of comprehensive assessment and analysis of economic security. This research is aimed at conducting component-by-component and, as a result, integrated assessment of the state of economic security of the enterprise. Methodological research tools include analysis of the main components, causation and vector regression modeling. A resource-functional security model is developed (which consists of partial indicators and components of economic security of business) and a resource-functional approach to calculations is also applied. Using the data of the expert survey, the values of indicators of structural components of economic security of the enterprise are determined. Using the resource-functional approach, the integrated values of sub-indices and the integral values of the general level of economic security of the enterprise are calculated. According to the results of the assessment, it is established that the integrated level of economic security of the enterprise is 7.04 (sufficient level of security). However, the components of economic security identified critically low values, namely - the financial component (0.452), the information component (0.554), the institutional and legal component (0.647). The results of the study are of practical value for the development of technological schemes - algorithms for strengthening the financial, informational and institutional and legal security of the enterprise, making sound (using economic and mathematical tools) management decisions to ensure the trajectory of sustainable economic development.

Theory of gas traps in stope and its application in ground extraction of abandoned mine gas: Part 2 – The development suitability evaluation of gas trap and its application

Abstract As well-known, not all abandoned mines have abundant AGM resources. Also not all abandoned mines with abundant AGM resources are suitable for surface gas development. It is a very timely and valuable work on how to scientifically and quickly optimize the target abandoned mines suitable for surface development from many abandoned mines. This research includes three parts, e.g., the development suitability evaluation of the trap in the stope, the optimization of target abandoned mine and the field application. In the first part, the evaluation system and method of trap development suitability are established. AGM resources, storage conditions, the accumulated water and the developing economy are selected as the development suitability evaluation indexes. Each evaluation index is divided into three levels, and the method to determine the grading standard value of each evaluation index is proposed. The multi-factor comprehensive evaluation method of grey relational analysis is used in the evaluation and divided the trap into three types: suitable trap, less suitable trap and unsuitable trap according to the degree of development suitability. In the second part, the optimization method of the target abandoned mine is proposed based on the theory and development suitability of the gas trap. Firstly, screen out abandoned mines with obvious safety risks or poor economic benefit prospect of gas development. Secondly, determine the number of gas traps and suitable traps in each candidate. Thirdly, the candidate abandoned mine with the largest total gas resources in suitable traps is selected as the most favorable abandoned mine. In the third part, taking a medium-sized coal mine in the southeast of Shanxi Province as a field test mine, the gas trap determination, resource calculation and development evaluation of 17 gobs were carried out. The evaluation results show that none of them are suitable trap. The results of surface gas development in the gobs of the mine confirmed the evaluation results.

Comprehensive Analysis and Improvement Methods of Noise Immunity of Desat Protection for High Voltage SiC MOSFETs With High DV/DT

This paper comprehensively analyzes desaturation (desat) protection for high voltage (>3.3 kV) silicon carbide (SiC) MOSFETs and especially how to build in noise immunity under high <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">dv/dt</i> . This study establishes a solid foundation for understanding the trade-offs between noise immunity and response speed of desat protection. Two implementations of the desat protection for high voltage SiC MOSFETs are examined, including desat protection based on discrete components and desat protection realized with a gate driver integrated circuit (IC). Both positive <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">dv/dt</i> and negative <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">dv/dt</i> are investigated. Analysis results show that the high <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">dv/dt</i> with long duration caused by high voltage SiC MOSFETs’ switching results in strong noise interference in the desat protection circuitry. The impact of numerous influencing factors is investigated analytically, such as parasitic capacitances, parasitic inductance, damping resistance, and clamping impedance. Under high positive <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">dv/dt</i> , extremely small parasitic capacitances (<0.01 pF) between the drain terminal and protection circuitry could still compromise noise immunity of the desat protection circuitry that has a high-impedance voltage divider. Comprehensive design guidelines are summarized to boost the noise immunity, including circuit design, component selection, and PCB layout. The noise immunity margin under the positive <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">dv/dt</i> is also derived quantitatively to guide the noise immunity improvement. The noise immunity analysis results and noise immunity improvement methods are validated with simulation and experimental results obtained from a phase leg based on 10 kV/20 A SiC MOSFETs.