bluuebunny/crossref_metadata_2025 huggingface dataset:
Novel quantitative trait locus qSDR3.1 represses Oryza sativa. L seed dormancy
Authors: Guo Naihui , Tang Shengjia , Wang Yakun , Chen Wei , An Ruihu , Ren Zongliang , Hu Shikai , Tang Shaoqing , Wei Xiangjin , Shao Gaoneng , Jiao Guiai , Xie Lihong , Wang Ling , Chen Ying , Zhao Fengli , Sheng Zhonghua , Hu Peisong
Published: December 2022

Preharvest sprouting (PHS), a deleterious phenotype that occurs frequently in rice growing regions with high temperature and precipitation, negatively affects yield, quality, and processing. Seed dormancy can prevent PHS. We report discovery of qSDR3.1, a new quantitative trait locus (QTL) for seed dormancy in rice. knockout lines of qSDR3.1 exhibited significant reduction in PHS. The qSDR3.1 locus negatively regulated seed dormancy by directly inhibiting the transcriptional activity of ABSCISIC ACID INSENSITIVE5 (ABI5). Haplotype analysis showed that qSDR3.1 was divided into five haplotypes and three amino acid (aa) types. The 102nd (aa102) and 105th (aa105) amino acids of qSDR3.1 were the key amino acids responsible for the differences in dormancy between Xian and Geng. Genetic diversity analysis revealed that qSDR3.1 was artificially selected during domestication. We proposed a two-line model for the process of rice dormancy domestication from wild rice to Xian and Geng, and we provide new candidate genes and germplasm for genetic improvement of rice seed dormancy.
Prevalence of Post-traumatic Stress Disorder and Its Associated Factors Among War-affected Residents in Woldia Town, North East Ethiopia, 2022; Community Based Cross-sectional Study
Authors: Kassaye Abenet , Demilew Demeke , Fanta Biruk , Mulat Haregewoin , Ali Dawed , Seid Jemal , Mulugeta Abiy , Dereje Jerman , Gelelcha Humduma
Published: December 2022

Background: Post-traumatic stress disorder is marked by increased stress and anxiety following exposure to a traumatic or stressful event. Events of conflict and war-related traumas were commonly reported situations and people who have undergone through have a higher tendency to develop PTSD, so this study aims to assess prevalence of post-traumatic stress disorder and its associated factors among war-affected residents in Woldia town, North East Ethiopia, 2022.
Method: A community-based cross-sectional study design was employed by using a multi-stage systematic random sampling technique from May-15 to June-15/2022. A total of 609 participants were enrolled. PTSD was measured by the Post-Traumatic Stress Disorder Checklist for DSM-5 (PCL-5). Data were entered by Epi data version 4.6.0.2 and analyzed using STATA version 14. Bivariable and Multivariable logistic regression analysis was done to identify associated factors to PTSD and P-values less than 0.05 were considered statistically significant.
Results: The overall prevalence of PTSD was 56.28%. Destruction/looting of property (AOR=1.6,95%CI,1.11-2.47), murder/injury of family member (AOR=2.1,95% CI,1.37-3.22), witness of murder of family member/others (AOR=1.6,95% CI,1.01-2.71), unlawful imprisonment (AOR=1.7, 95%CI, 1.06-2.74), depression (AOR=2, 95%CI ,1.37-2.93), anxiety (AOR=3.3, 95%CI,2.26-4.97), experience trauma on themselves (AOR=2.0,95%CI,1.22-3.58), poor (AOR= 3.1,95%CI,1.60-6.04) and moderate (AOR= 3.0, 95%CI, 1.56-5.87) social support were statistically associated with PTSD at a p-value < 0.05.
Conclusion: The study reveals that the prevalence of PTSD was high in Woldia town following an armed conflict between Federal Government and Tigray forces. Destruction/looting of property, murder/injury of family, witness murder of family/others, unlawful imprisonment, depression, anxiety, experience on themselves, poor and moderate social support were statistically associated with PTSD. Hence, encourage organization working on Mental health, routine patient assessment with a history of trauma, facilitating means to support affected residents is recommended.
Optimal feeding rate and feeding frequency during the grow-out phase (95-350 g) of tambaqui (Colossoma macropomum) reared in earthen ponds
Authors: Rodrigues Ana Paula Oeda , Freitas Luiz Eduardo Lima , Maciel-Honda Patricia Oliveira , Lima Adriana Ferreira , Lima Leandro Kanamaru Franco
Published: December 2022

Two feeding rates, 3% and 4% body weight per day (3%BW and 4%BW), and two feeding frequencies, twice and three times a day, were assessed during 84 days at the initial grow-out phase of tambaqui in earthen ponds. In a completely randomized 2x2 factorial experimental design in quadruplicates, 4,800 juvenile tambaqui (94.5 ± 6.4 g) were assigned to sixteen 300-m2 earthen ponds. No mortalities or difference in growth between treatments were observed during the trial. Total feed intake and feed conversion ratio were low in the fish fed at 3%BW. Fat deposition in the fish carcass and concentration of glycogen and lipid vacuoles in the hepatocytes were also low in fish fed at 3%BW. Plasma cholesterol and triglycerides were higher in the fish fed three times a day at 4%BW. Increased concentration of malonaldehyde was observed in the carcass of fish fed three times a day at 4%BW at the end of the storage period. Fish fed twice a day presented higher total feed intake per meal than fish fed three times a day, demonstrating that tambaqui was able to regulate the feed intake to benefit from a low feeding frequency. No difference was observed in pond phytoplankton and zooplankton concentration or sediment chemistry. Fish fed at 3%BW presented higher stomach content weight, demonstrating the contribution of the natural food as a complementary nutrition to tambaqui. Based on the results, tambaqui of 95 to 350 g reared in earthen ponds may be fed twice a day at 3%BW.
Treatment of Basilar Invagination by Joint Remodeling and Cage Implantation Combined with Intraoperative Cervical Traction
Authors: Hou Zhe , Jian Qiang , Fan Wayne , Liang Cong , Fan Tao
Published: December 2022

Objective:This study aimed to explore the clinical and imaging results of lateral atlantoaxial joint remodeling, cage placement, and intraoperative traction in the treatment of basilar invagination.
Methods: The clinical data of 11 patients with basilar invagination treated by lateral atlantoaxial joint remodeling, cage placement, and intraoperative traction were analyzed retrospectively. The lateral atlantoaxial joint surface was remodeled to form an inclined surface between the joints, and a cage was then placed. The combined use of these techniques corrects the clivus canal angle and simultaneously moves the dentate process downward, thus reducing the compression on the ventral surface of the brainstem. The Chamberlain line invasion, atlas-dens interval, and clivus-canal angle were measured using a preoperative and postoperative CT scan. In addition, pB-C2 and cervicomedullary angle (CMA) were measured on sagittal magnetic resonance imaging pre- and postoperatively. The clinical outcomes of all patients were assessed using the Japanese Orthopedic Association (JOA) scale. Wilcoxon test was used to compare the pre- and postoperative measurements.
Results:Clinical symptoms of all patients significantly improved. The mean JOA score increased from 11.73 ± 2.45 preoperatively to 15.09 ± 1.22 postoperatively (z = –2.956, P = 0.003). No vertebral artery or dura mater injury was observed. The ventral compression of the brainstem was relieved after the operation. The mean pB-C2 decreased from 10.85 ± 2.96 postoperatively to 7.13 ± 1.38 preoperatively (z = –2.936, P = 0.003), and mean clivus-carnal angle and mean CMA increased from 137.25 ± 8.38 and 131.58 ± 9.17 preoperatively to 147.35 ± 7.55 (z = –2.934, P = 0.003) and 146.05 ± 6.36 (z = –2.934, P = 0.003) postoperatively, respectively. There were two cases of collapse of the C1 inferior articular process and one case of avulsion fracture of the C1 anterior arch. All patients achieved interarticular bone fusion.
Conclusion: The cases demonstrated a safe and effective method for treating basilar invagination when atlantoaxial joint reduction is difficult during surgery.
Echocardiographic reference intervals for end-diastolic and end-systolic left ventricle volumes obtained by Simpson’s method of discs in healthy show jumping and polo Argentine saddle horse
Authors: Pérez Jeff , Alessi C. , Giraldo C. E. , Zucca E. , Wess G. , Linares-Villalba S.E
Published: December 2022

The objective was to establish the breed-specific echocardiographic reference intervals for end-diastolic volume and end-systolic volume of the left ventricle obtained through biplane Simpson’s method of discs (SMOD) in the show jumping and Polo Argentine Saddle horse. The determination of central 90% reference limits was calculated, and its confidence intervals and reference intervals were reported with 90% confidentiality. A comparison was made between the cardiac SMOD-derived volumes and Teichholz-derived volumes. 39 horses were selected to create the reference intervals and the EDVI SMOD-derived was 1.32ml/kg, RI 1.26–1.37 and ESVI SMOD-derived was 0.47ml/kg, RI 0.43–0.50. There was a clinically relevant difference between EDVI SMOD-derived and EDVI Teichholz-derived volumes, p < 0.001, d = 1.14. The ESVI SMOD-derived volumes were clinically relevant and different from Teichholz-derived volumes, Z = -2.03, p < 0.05, r = 0.33. The EDVI in males was statistically equal to EDVI in females, p = 0.72, r = 0.39. The ESVI in males was statistically equal to ESVI in females, p = 0.12, r = 0.33. In conclusion, it is feasible, as in humans and dogs, to obtain SMOD-derived ventricular volumes in horses, and can be useful for clinical and research purposes.
Downward migrating microplastic in lake sediments is a tricky indicator for the onset of the Anthropocene
Authors: Dimante-Deimantovica Inta , Saarni Saija , Barone Marta , Buhhalko Natalja , Stivrins Normunds , Suhareva Natalija , Tylmann Wojciech , Vianello Alvise , Vollertsen Jes
Published: December 2022

Plastics are a particulate novel material in Earth’s history. Due to its persistence and wide-range presence, it has a great potential of being a global age marker and correlation tool between sedimentary profiles. Hence, microplastics are currently considered among the array of proxies to delimit the Anthropocene Epoch (starting from year 1950 and above). Here we present a study of microplastics deposition history inferred from sediment profiles of three lakes in north-eastern Europe. The sediments were dated with independent proxies from nowadays back to the first half of the 18th century. Surprisingly, regardless of the sediment layer age, we found microplastic particles throughout the cores in all sites. The factor driving microplastic particles to penetrate deeper in sediment layers appears to be particles' dimensional (aspect) ratio: less elongated particles tend to be transported deeper while more elongated particles and fibres have a decreased ability to be mobile. We conclude that interpretation of microplastics distribution in sediment profiles is ambiguous and does not strictly indicate the beginning of the Anthropocene Epoch.
Pedelecs als Beitrag für ein nachhaltiges Mobilitätssystem?
Authors: Prill Thomas
Published: December 2022

Den Ausgangspunkt für diese Dissertation bildeten die seit 2010 verstärkt stattfindenden Diskussionen um das Thema Elektromobilität, deren politischer Fokus auf das Elektroautomobil gerichtet ist, was insbesondere in dem Ziel von 1 Mio. Elektroautos, die bis 2020 in Deutschland unterwegs sein sollen, zum Ausdruck kommt. Während die Fortschritte in diesem Bereich aber relativ verhalten waren, hatte sich zu diesem Zeitpunkt bereits die Fahrrad-Elektromobilität aus einem Schattendasein gelöst und in den letzten Jahren erhebliche Zuwächse erzielen können. Nach Erkenntnissen des Zweirad-Industrie-Verbandes (ZIV 2013) hat sich die Anzahl verkaufter Pedelecs zwischen 2009 und 2012 kontinuierlich von 150.000 auf 380.000 erhöht. Im Rahmen der Dissertation wurde über die Analyse der Akzeptanz, Nutzung und Wirkung von Pedelecs untersucht, ob durch die verstärkte Nutzung dieser technologischen Innovation ein Beitrag zu einem nachhaltigeren und zukunftsfähigen Mobilitätssystem geleistet werden kann. Das Ziel der Untersuchung mit dem Schwerpunkt der berufsbezogenen Mobilität war es, herauszufinden, ob und ggf. wie durch eine Verstärkung der Praxis des Pedelec‐Fahrens ein Wandel innerhalb des Mobilitätssystems erreicht werden kann. Als Ergebnis der Dissertation kann festgehalten werden, dass die Chancen für einen Wandel des Mobilitätssystems derzeit sehr gut stehen und Pedelecs, als vergleichsweise nachhaltige Fahrzeuge, dazu einen aktiven Beitrag leisten können. Zwar findet die dazu notwendige Nutzung, die insbesondere aber nicht ausschließlich zu einer Reduzierung von Automobilität führt, derzeit noch auf einem relativ niedrigen Niveau statt, so dass von einem systemwirksamen Beitrag noch nicht gesprochen werden kann. Es konnten aber, neben der Substitutionswirkung, noch weitere Wirkungen identifiziert werden, die ebenfalls Beiträge zu einem nachhaltigeren Mobilitätssystem leisten können. Damit wird deutlich, dass eine weitere Förderung von Pedelecs, die als notwendig erachtet wird, nicht nur der Pedelec-Mobilität zugutekommen kann, sondern nachhaltiger Mobilität insgesamt.
Integrating Contextual Approach and Islamic Values in Three-Variable Linear Equations System Module
Authors: Ulfaini Riyana , Permatasari Dian
Published: December 2022

In the 2013 Curriculum, students are expected to have knowledge and skills in lessons and also have spiritual and social attitudes. Therefore, it is necessary to connect learning material with real-life and religious aspects. This research aims to develop a mathematical module based on a contextual approach that integrates Islamic values â€‹â€‹into a valid Three-variable Linear Equations System. This research is a research and development (R&D). This research was designed by following Richey and Klein's development steps, namely the PPE model. The PPE model consists of 3 steps: planning, production, and evaluation. The data collection instruments used in this study were a material expert validity assessment sheet and a media expert validity assessment sheet. The data that has been obtained were analyzed using average and percentage calculations and classifying the results based on predetermined criteria. The results showed that the mathematics module based on a contextual approach that integrated Islamic values â€‹â€‹in the material of a Three-variable Linear Equations System met the valid criteria based on the assessment of expert validators. This shows that the module have "good" qualification with an average score of 83.40% by the material expert validator and "good" qualification with an average score of 87.5% by the media expert validator.
Eksplorasi Pemberian Kartu Masalah untuk Meningkatkan Kemampuan Numerasi Siswa Kelas VII SMP Negeri 1 Pakis
Authors: Nasution Syaiful Hamzah , Rahmawati Zulian Putri , Masruroh Aizzatul , Anjarini Achriani Galuh
Published: December 2022

The results of the 2018 PISA test show that Indonesian students' math ability scores are ranked 7th from the bottom. This shows that the numeracy skills of Indonesian students are low. Based on an interview with one of the teachers at SMP Negeri 1 Pakis, information was obtained that the numeracy skills of students at SMP Negeri 1 Pakis were low. This is due to students' lack of numeracy questions, and teachers often give routine questions requiring procedural skills. This is a classroom action research that explores the teacher's actions to improve the numeracy skills of seventh-grade students of SMP Negeri 1 Pakis Malang by giving problem cards. The research subjects were 32 Class VII D students of SMP Negeri 1 Pakis Malang in the academic year 2021/2022. The research instruments include lesson plans, problem cards, test questions, observation sheets, interview guidelines, and field notes. Data analysis techniques include data reduction, presenting data, and drawing conclusions and verification. The results showed an increase in students with a KKM score of 30.77% and Classical Learning Completeness of 26.26%. The study shows that giving problem cards can improve students' numeracy skills. Through the Problem Card, students are allowed to write down the information asked in their language and are given guidance/instructions to solve the given problem.
Improving the technology of retaining walls in the Irkutsk region using gabion baskets
Authors:   Irkutsk National Research Technical University, Dobruskina Margarita A. , Petrov Aleksandr V. ,   Irkutsk National Research Technical University, Zolzhalgal Bat-Erdene ,   Sungsan Hyo University
Published: December 2022

Problems related to the design, construction and operation of typical retaining structures, presented in the form of monolithic and precast and reinforced concrete, are studied under the climatic conditions of the Irkutsk region. A comparative analysis with gabion basket structures is provided and the advantages of us-ing gabions are revealed. The costs of materials that make up the cost of gabion structures under real con-struction conditions were studied in detail and constructive technological solutions were proposed for the construction of these supporting structures. The natural stone laying technology in partial volume of con-tainers, i.e. its use on the face, visually visible surfaces of mounted boxes, was chosen as a reserve for reducing the cost of gabion structures. It is established that the main visually unseen volume of gabions can be filled with other materials: crushed stone of various fractions, gravel, cobblestones, concrete scrap. Moreover, the use of the specified aggregate containing small fractions requires an additional measure that does not represent a significant increase in material and labour costs – laying in the process of filling the boxes of the vertical dividing wall of geotextiles along the boundary between “face stone" and “other filling”. According to the preliminary technical and economic study of the proposed options of filling gabions, the possibility of a cumulative reduction in the estimated cost of the construction of gabion structures amount-ed to about 20% of basic design, i.e. prices in 2019 could result in savings of 1500 rubles per 1 m3 of fin-ished products including all expenses – earthworks, transportation costs and landscaping – carried out at the end of the primary cycle of the work.
The morphology of historic quarters as a potential for successful social development of the urban centre of Ulan-Ude
Authors:   Irkutsk National Research Technical University, Makotina Svetlana A. , Konenkina Alina E. ,   Irkutsk National Research Technical University, Solntseva Galina N. ,   East-Siberian State Institute of Culture
Published: December 2022

The article reveals the morphology of the historical quarters of the city of Ulan-Ude at around the turn of the 18th century. An ensemble of historic buildings and new buildings integrated into the modern environment was studied alongside the characteristics of the formation of the city using topological and morphological analysis. An additional task consisted in the identification of factors resolving contradictions between the development of a commercialised city and the preservation of the historical compact centre. Methods of visual, historical town planning and compositional analyses were used in the study. The illustrations are rep-resented by the graphic-analytical works of the authors supplemented by personal photographic materials. Historical, social and functional research was conducted alongside a study of the historical development of the old centre of Ulan-Ude in forming the structure of the city. A chronological, topological, morphological analysis of the architectural and planning organisation of the central part of Ulan-Ude were fulfilled and the main zones of town-planning mutations of historical quarters in the period from the XVII to the XXI centuries were revealed in terms of the morphology of the building. Factors in the integration of modern architectural objects alongside historical buildings are discussed and topological features of the space in the architec-tural and town-planning structure of the centre of Ulan-Ude described. Connections between locations and the "crowdedness" of routes in the socio-spatial model of the city were determined and the intensity of pe-destrian traffic and its distribution in network sections identified to help inform strategies and alternatives for the development of the historical centre. In providing an objective description of the architectural and planning structure of the historic quarter, the study identifies the relationship of the historic quarter with its surrounding landscape and presents the historical relatedness of objects to the city's structure along with the functional and compositional features of the formation of the historic quarter. A consideration of chang-es in the modern architectural environment of the city offers the possibility of meaningful planning and the formation of the social efficiency of the historical city centre. The generalisation of research on the example of the given object allowed us to make recommendations for improving urban space and optimising the social and economic development of historic quarters.
Efficiency of infrared heating of industrial premises under Siberian conditions
Authors:   Irkutsk National Research Technical University, Grebneva Oksana A. , Shirokih Alyona E. ,   Irkutsk National Research Technical University, Makeeva Kristina I. ,   Irkutsk National Research Technical University
Published: December 2022

In the Russian regions experiencing long periods of low outside temperatures in winter, heating systems are of great importance. The existing heat supply systems are characterized by a significant level of depreciation and obsolescence, thus leading to considerable heat losses in the networks. Require high maintenance and repair costs, such systems become inefficient for an industrial company. In addition, the heat supply of production facilities is labour-intensive and expensive due to their large area and increased requirements for reliability, energy and cost-efficiency. In this regard, selection of a heaterthat would meet all the requirements is challenging. The use of infrared heating systems for heating industrial buildings have recently become particularly, providing uniform heating of premises and allowing economical use of energy resources. The paper examines the possibility of using infrared radiators for heating industrial premises in Siberia, as well as determines their pros and cons. Using an example of industrial premises situated in the climatic conditions of the city of Irkutsk, the authors conducted numerical studies of different types of infrared heaters. On the basis of the obtained results, the energy and economic efficiency of gas infrared emitters was confirmed.
A method for identifying leaks in water pipes by controlling the pressure gradient
Authors:   Azerbaijan State Oil and Industry University, Eminov Ramiz A. , Huseynli Elmir I. ,   State Research Institute of Water Problems, Kerimova Saida I. ,   Scientific and Research Institute of Aerospace Informatics National aerospace Agency
Published: December 2022

The objective was to develop a method for determining leaks in a branchless water pipeline section, when a pressure drop in the pipe under the action of friction forces is observed. The problem of detecting leaks can be solved by developing new methods for monitoring the operation of water supply and distribution systems. A well-known method for detecting leaks in branchless pipelines consists in determination of the coordinates of the intersection point of lines that characterize the pressure change in the pipe before and after the leak incident. On this basis, a method is proposed for determining several leak locations in the water supply system with fewer necessary measurements. A well-known method for determining leaking sites in a horizontal water supply section with a constant pipe diameter was analysed. One disadvantage of this method is that determination of a leaking site may require numerous measurements to establish the ratio of the pipeline length to the most likely minimum length of the interval between nearby leak points. The developed method for detecting water leaks by monitoring the pressure gradient eliminates this drawback. A method of equivalent points was proposed, which allows the number of necessary measurements to be significantly reduced. Formulas were obtained for estimating the multiplicity of reducing the number of necessary measurements in the proposed method. It was determined that, upon an excessive increase in the number of leak points, the specified multiplicity decreases to zero. However, this indicates a completely obsolete water supply system, which requires replacement
Role of transport infrastructure in shaping the parameters of inter-road areas of the Dushanbe city
Authors:   Bratsk State University, Peretolchina Lyudmila V. , Glebushkina Lyudmila V. ,   Tyumen Industrial University
Published: December 2022

This paper aims to analyse specific features of the existing main street network within the right-bank part of Dushanbe for its compliance with the requirements of transport services to the population, determining the relationship between the size of inter-road areas, on the one hand, and the intensity of traffic specified by the density of the street network and the level of motorization, on the other hand. An on-site survey of streets and roads was carried out to identify the intensity of traffic during peak hours to assess the current state of the existing network of main streets in Dushanbe and their role in the planning structure of residential areas. For the Dushanbe agglomeration, the issues of transport services for its central core are relevant due to a significant territorial growth. The study included 36 inter-road areas, for which a database of urban planning indicators was created, and the street road network was evaluated based on the application of quantitative and structural criteria. Comparing the capacity of main streets with the capacity of inter-road areas by the number of residents and the number of vehicles showed an acceptable level of highway functioning with an increase in motorization to four hundred cars per thousand residents if one excludes external and intra-city transit traffic. In the study, violations were identified in the differentiation of the street and road network by the functions performed and ensuring the pedestrian accessibility of public transport stops. The study results can be used as a methodological basis for the development of urban planning documentation following the types established by the legislation of the Republic of Tajikistan.
Corporate management methods in housing construction
Authors:   The Russian Presidential Academy of National Economy and Public Administration, Volodin Dmitry O.
Published: December 2022

The aim of this paper was to generalize corporate management methods of investment and construc-tion activities in the context of increasing urbanization challenges and the need to implement new ap-proaches to the goal setting and completion of housing construction. The methodology under devel-opment is aimed at ensuring the economic efficiency of large corporations, which task cannot be achieved without a strategic orientation of their activities. In this study, classification of corporate man-agement methods was related to corporate business patterns, which are increasingly acquiring the form of holding structures. This is due to the need of managing a growing number of divisions and an infinite variety of business operations serving all stages of the life cycle of real estate projects. In prac-tice, a holding is a successful resolution of the basic conflict between the growth of economic units and coherent preservation of their activities. The latter can only be achieved provided valid managerial decisions. The managerial decision-making logic and the methodology of strategic decisions were ana-lysed as regards to the operational peculiarities of holding structures. Among the methods of strategic decision-making, particular attention was paid to portfolio, analytical, indicative, calculation and estimat-ing methods. Practical application of corporate management methods in the context of emerging chal-lenges and their prioritization can be essential under an increasing popularity of block chain technolo-gies. This will enable storage of data on the maintenance of real estate facilities throughout their life cycle. Generally, the extended use of block chain technologies is a necessary step among an increas-ing number of corporate participants focused on problem solving at different implementation stages of housing construction projects.
Strategies and tactics of urban environment design in the context of the development of wooden build-ings in the old city of Irkutsk
Authors:   Irkutsk National Research Technical University, Khokhrin Eugeniy V. , Smolkov Sergеi A. ,   Irkutsk National Research Technical University
Published: December 2022

The purpose of this research is to study the theoretical and methodological aspects of the develop-ment of design in urban areas in the context of the implementation of tools for the translation of spe-cific vocabulary of shaping for the local cultural tradition. The research methods comprise the devel-opment of local strategies and tactics for the formation of the architectural and compositional identity of the urban environment, which are practically poorly studied, while the problems of the uniqueness of development of the urban areas are a priority in modern urbanism. Particular attention is paid to the problems of the formation, preservation, and development of the urban environment design, as well as solving the problems of the native arrangement of modern urbanized spaces. Solving these problems allows optimizing the choice of generated options, which is especially important in the process of de-signing urbanized areas. The aspects of the urban identity of the historical environment of the cultural and social center of a Siberian settlement presented in the paper make it possible to operate with vari-ous types of dimensional quantities, from the formation of a spectrum of parameters to their compara-tive assessment, and as a result, a system of criteria for the compliance of the initial situation of the composition with a given benchmark. The results of the study confirmed the existing theoretical posi-tions, thereby proving the effectiveness of the study.
Current status and development prospects of the gas distribution system in the Angarsk urban district
Authors:   Irkutsk National Research Technical University, Aizenberg Ilia I. , Podbelskaya Daria N. ,   Irkutsk National Research Technical University
Published: December 2022

The aim of the research is to analyse the status of the low-pressure gas distribution system functioning in of the Angarsk urban district (AUD), as well as to identify possible directions for its reconstruction and modernization. These measures are aimed at developing the housing stock and the capacity of industrial enterprises. The number of local and distributed consumers in Angarsk and the Angarsk urban district was used to analyse the current load of medium- and low-pressure gas supply systems. To check the status of the gas supply system in the region, a theoretical study was undertaken involving analysis, abstraction, and induction. Choosing the methods for reconstruction and modernization of the system required abstraction from the current gas type used in the AUD. Particular attention was drawn to the forecast of gas consumption in the next 10–20 years and possible gasification of the Irkutsk region due to the launch of the main gas pipeline "Power of Siberia". The conducted analysis of the current status of the gas distribution system revealed shortcomings, indicating the need for reconstruction and modernization of network sections, as well as control and regulation units. In addition, the reliability of the operating equipment was checked, considering its service life. The data obtained were used to develop guidelines for reconstructing the existing gas distribution systems and modernizing control units and gas equipment both technically and economically. An increasing volume of gas consumption by the housing stock and the industrial sector compels us to seriously consider the reconstruction of the gas supply system. However, it is essential to develop a gas supply system that accounts for the possibility of transition to natural gas. This factor calls for the project solutions to be compatible with any type of gas fuel.
Deformability of prestressed flexural reinforced concrete elements with high-tensile reinforcement steel of At1200 class
Authors:   East Siberia State University of Technology and Management, Kaurov Anatoliy I.
Published: December 2022

A homegrown innovation of thermo-mechanically treated high-tensile reinforced steel (AT1200 class, 30HGS2 and 30HS2 types) increases the efficiency of prestressed reinforced concrete in the construction industry. This paper analyses the deformability of prestressed flexural reinforced concrete elements with the AT1200 reinforcement steel. To study the characteristics of the stress-strain behaviour in flexural elements with the AT1200 reinforcement steel, rectangular-sectioned, conventional and prestressed reinforced concrete beam elements were tested. Reference deflection of the test elements, which was used as a deformability criterion, was recorded by mechanical and strain-gauge measuring equipment. This work is part of a comprehensive study on AT1200 steel and constructional steelworks. The findings of experimental and theoretical studies are presented, addressing the effect of prestressing on the deformability in flexural reinforced concrete elements. The obtained results indicate that prestress, if applied correctly, significantly increases the stiffness (reduces the deformability) of the flexural elements. The methodology of current standards is based on a general structural theory and includes both flexural and shear strain characteristics of structures in the section over their length. The possibility of extending the method to assess deflections of the prestressed flexural elements with the studied AT1200 steel is substantiated. Empirical dependencies obtained for the л coefficient are recommended for affecting the deformability and cracking resistance of flexural elements comprising prestressed AT1200 steel and initial preoperational prestressing cracks (deflection cracks in the zone, pressed during operation).
Efficient surface foundations for power lines
Authors:   Dagestan State Technical University, Magomedov Marsel A.
Published: December 2022

Surface foundations help improve the mechanical performance of transmission towers. In this work, we examined and identified the most effective structures of surface foundations to be used as trans-mission towers. In the study, general scientific methods were used: comparison, analysis, observation, synthesis, generalisation, systematisation, modelling, as well as the graphical presentation of the re-sults obtained. In the course of the work, the most common structures of surface foundations were considered – lattice poles and concrete blocks. An efficient design of a surface foundation with an in-creased bearing area and a rational position of reinforced concrete main girder have been proposed, which allows the strain in the support nodes, the pressure under the foundation bed and the defor-mation of the foundation blocks to be reduced. This design is recommended as a transmission tower to be used on soft soils.
Addressing uncertainty in water consumption when optimising promising water supply and disposal schemes
Authors:   Irkutsk National Research Technical University, Peshkov Vitaliy V. , Bober Viktor A. ,   Irkutsk National Research Technical University, Shlepnev Oleg K. ,   Irkutsk National Research Technical University
Published: December 2022

The design of urban water supply and disposal systems is associated with overcoming various uncer-tainties of an economic, technical, natural and anthropogenic nature. Among them, the estimated loads for water consumption and discharge are the most significant. If water supply and disposal systems are designed and built for loads higher than the actual values, the water and runoff flow rates will cause quiescent area, pipeline silting and even plugging. If the actual load exceeds the designed load, this will lead to significant hydraulic pressure losses, overstated operating costs and considerable equip-ment wear. The risks involved with overestimating or underestimating the design loads are very high, as both would require reconstruction and immense financial investments. To minimise such risks, we propose a methodology based on a multi-stage and adaptive project implementation with minimum risks when making a decision at each step. A numerical study demonstrated the efficiency of the proposed methodology and its conformity with the domestic design process and development of water supply and disposal systems. This method allows the optimal way of system development to be chosen ac-cording to the life cycle costs.
Methodology for assessing the consequences of switching to a closed-circuit hot-water supply in dis-trict heating systems
Authors:   Omsk Heat Distribution Networks (Omsk RTS), Chicherin Stanislav V. , Glukhov Sergey V. ,   Omsk State Transport University, Glukhova Mariya V. ,   Omsk State Transport University, Ilicheva Anna K. ,   Omsk State Technical University, Zhuikov Andrey V. ,   Siberian Federal University
Published: December 2022

As of 1 January 2022, the transition to a closed-circuit hot-water supply in district heating systems will begin in Russia. This work proposes a methodology for assessing the consequences of this transition. The procedure is as follows: determining specific operational consumption of district water for hot wa-ter supply with manual direct water intake when the outside temperature changes; developing the re-quired mode of closed hot-water supply; analysis of the practically possible mode of manual consump-tion in the heat supply system; determining the operational specific consumption of hot-water supply in manual hot water systems with direct water intake, including the characteristics of the heat supply source; calculating the flow rate of direct water for water circulation in manual hot water supply sys-tems; analysing the hydraulic regime before and after the transition to a closed circuit; offering recom-mendations. The method for assessing the consequences associated with the transition to a closed-circuit hot-water supply in district heating systems showed that the amount of make-up water consump-tion from a heat source is affected by a change in the actual consumption of hot-water supply and the temperature of cold and hot water. Based on the research results, it can be concluded that there is no technical possibility of an overall transition to a closed circuit. To prepare technical reports and perfor-mance charts, it is recommended to use the actual values of heat consumption for the hydraulic calcu-lations; to use the metered values and consider a significant number of manual hot-water supply sys-tems in calculating the hot-water supply consumption standard; to include the loss of heat energy on heating towel rails, domestic losses of building services systems under a four-pipe heat supply system in the distribution pricing.
Development of an efficient planning concept for office space by projected organisation of social space
Authors:   Irkutsk National Research Technical University, Dashiev Timur A.
Published: December 2022

This study aims to develop an efficient planning concept for office space by a projected organisation of social space. The article shows a principle of developing the functional design of an architectural structure and methods of its subsequent assessment. The study was carried out using the example of a section under reconstruction in an industrial building for the functions of a co-working centre. The methods included analysis and acquisition of data on the design of co-working centres with the subse-quent topological analysis of references. This allowed the structure of connections between the ele-ments allocated in space and the functional content of the room to be determined. Based on the ob-tained data, the options for design solutions targeting an office building were formed. For their analy-sis, the tools of space syntax were applied. To visualise the efficiency of the "work" and "rest" pro-cesses, comparative graphs of their behaviour were built, as well as a scheme for evacuation proce-dures. These graphs were used to compile the most effective design concepts. Tracing user routes through human flow simulations revealed vulnerabilities in supply chains and the structure of the ongo-ing social process. The graphs exhibited multiple peak values, meaning that necessary functional zones are missing. After eliminating these vulnerabilities, the built graphs of the key process show an increase of 17% in the level of social efficiency. The evacuation procedures also showed the efficien-cy of the developed layout concepts in reducing the total time for evacuating users. The most effective solution was to locate recreation areas with high attendance in the most accessible places in the framework of an architectural structure.
Regeneration of historic wooden urban realm: restoration and relocation of a cultural heritage object
Authors:   Irkutsk National Research Technical University, Pulyaevsky Pavel E. , Zakharchuk Marina G. ,   Irkutsk National Research Technical University
Published: December 2022

Irkutsk is a city where an original wooden building of the 19th–early 20th centuries have been pre-served. Wooden streets and entire city blocks are a cultural heritage that increases interest in the capi-tal of Eastern Siberia from historical and architectural perspectives. However, the life span of wooden structures is short. Thus, wooden development, characteristic of Siberian cities for decades, is on the verge of extinction. At present, the preservation and restoration of such architectural monuments have become increasingly important. The paper discusses the problems of restoration and relocation of a wooden house, previously located in Irkutsk, Gavrilov street, 3. This building is on the List of Immova-ble Cultural Monuments, which can only be transferred to another site in exceptional cases following the existing legislation. We considered the stages of project development, the cultural and historical context in history and archives research, restoration methods necessary to reproduce the original ap-pearance of a wooden heritage object, its transportation to the historical block. The analysis of restora-tion and relocation of the historical and cultural monument built in the early 20th century allows us to draw the following conclusion. In this particular situation, the only correct decision for saving the his-toric monument was its transfer to the related environment of the regenerated 130 Kvartal in Irkutsk.
The architecture of a church on Lake Sugomak in Kyshtym, Chelyabinsk region
Authors:   South Ural State University (National Research University), Shabiev Salavat G. , Kvach Vitaly A. ,   South Ural State University (National Research University), Kobylova Yana M. ,   South Ural State University (National Research University)
Published: December 2022

This work aimed to develop a schematic design of an orthodox church, based on complex prior design studies, with improved surrounding grounds. The church should meet orthodox canons and require-ments of modern architecture at the level of a general layout and a single object. To achieve this goal, the following methods were used: an on-site survey using geoinformation systems of the future con-struction site at Lake Sugomak in Kyshtym, Chelyabinsk region; a study of regulatory documents; a comparative analysis of religious architecture in Russia and abroad to determine the canons of Ortho-dox architecture; selection of an optimal solution based on a multivariate design with environmental improvement and landscape gardening of the surrounding grounds. Local conditions were examined, the traffic management and climate characteristics of the territory were determined. Owing to the in-struments of modern architectural science, a unique design solution of a minimalist church was elabo-rated, following all urban and architectural requirements. With the erection of a temple complex, which blends seamlessly into the landscape, the designed territory will acquire a compositionally complete and contemporary appearance. The architectural solution presented can be used in designing Ortho-dox temples in other regions of Russia, as well as in near- and far-abroad countries.
Theoretical issues and models of the state regulation of economy
Authors:   Baikal State University, Trofimov Sergei E.
Published: December 2022

Analysing the models of state regulation revealed the total variability of governmental intervention in the economic life of society. The heterogeneity of the results associated with identical economic poli-cies applied to different countries and historical stages is noted. The work aims to demonstrate the comparative advantages and disadvantages of different models of the state regulation of economy. The article examines and analyses various approaches to state regulation of economic activity; the views of leading scientists on this issue were studied. It was established that selecting a model is substantiated by the state of social and economic development, the mentality of the population, as well as many other factors, and can vary from extreme deregulation of various industries to the state monopoly on producing all types of products. In conclusion, it is necessary to establish optimal direc-tions in implementing the policy of state regulation of the economy based on the compilation of indi-vidual theoretical models since the differences between some of them have become conditional.
Using brine solutions of natural origin for dust control on motorways with an intermediate road surfac-ing on example of Irkutsk region
Authors:   Irkutsk National Research Technical University, Balabanov Vadim B. , Khamidulina Dzhamilya N. ,   Irkutsk National Research Technical University
Published: December 2022

The road network of the Irkutsk region comprises over 12 000 km. Most roads run near villages, na-ture reserves and national parks; nevertheless, intermediate road surfacing is used. Therefore, road materials, including dust control, are subject to stringent requirements. The objective of the work is to study the environmental impact of dusting processes on highways with an intermediate road surfacing, as well as to solve the problem of scuffing of these roads on the territory of the Irkutsk region using local materials. For this, on the territory of the Zhigalovsky district in the Irkutsk region, the processing of highways with the intermediate road surfacing and their subsequent operation during the warm dry season were examined. In the course of the study, the composition and environmental impact of the brine solution of natural origin produced on the territory of the Znamensky deposit in the Zhigalovsky district, the Irkutsk region, was compared to other materials used for dust control of motorways. A con-clusion was made on the environmental safety of natural brine and its efficiency in dust control on road surfaces.