Problem Of Construction Research Articles

Study on Poverty Alleviation and Resettlement Areas from Poverty Alleviation to Rural Revitalization

The rural revitalization strategy proposed by the state is consistent with the goal of poverty alleviation and relocation work in easy areas, and its related industrial development, employment support and other directions are similar, which can achieve effective convergence. The development of poverty alleviation and relocation in rural areas helps to achieve poverty alleviation and inject vitality into rural revitalization construction. This paper discusses the policy evolution from poverty alleviation to rural revitalization from the perspective of resettlement areas for poverty alleviation in rural areas, analyzes the existing problems in rural revitalization construction, and puts forward the relocation strategy for poverty alleviation in rural areas, aiming to implement the national development goals and help consolidate and expand the achievements of poverty alleviation.

Housing construction in Russia during the 100-year period: Dynamics, results and socio-economic problems

The article considers the dynamics of housing construction in the Russian Soviet Federative Socialist Republic (RSFSR — a constituent republic of the Soviet Union) and the Russian Federation from the year of 1918 to 2023. For our analysis, we make use of such indicators as housing completions overall and in urban and rural areas, by source of financing, by segment (apartment buildings and individual houses); the data on the size of the housing stock and its structure depending on the form of ownership; housing availability to the population; quantity, structure and floor space of housing units built as well as number of people who improved their housing conditions. On the basis of the data on housing completions in various segments and changes in the legislation, we identify seven stages in the evolution of housing construction in the RSFSR and the Russian Federation during the century considered as well as characterize each of the stages. The article presents for the first time estimates of the area of total and rural socialized housing stock and the housing stock of the RSFSR that was in the personal ownership of citizens for the years of 1926, 1939, 1949 and for the period from 1958 to 1979. We also pinpoint major current socioeconomic problems in housing construction and suggest measures to resolve them with the aim of raising housing availability and affordability for the population of the Russian Federation.

Multidimensional Analysis of Rural Economic Development: Exploration of Problems, Reforms and Innovative Models

Conducting in-depth analysis on rural economic construction, Firstly, it analyzes the existing problems in current rural economic construction, including the loss of vitality of the household contract responsibility system, incomplete rural land integration reform, inactive land transfer, and difficulty in integrating industrial and commercial capital into rural areas. These problems involve various factors such as labor force, land resources, benefit distribution, and talents. Then, it elaborates on the theory of the "three-share separation" reform model in detail, including its basic definitions, distribution mechanisms, management mechanisms, and decision-making mechanisms. Through the comparison of practical cases of this model in different application directions, such as the failure of the pig farm in Tianxinwei Village, Dacheng Village Committee, Taiping Town, Yangshan County, Qingyuan City, Guangdong Province and the success of the sixth industrial economic cooperative, it shows the advantages of the "three-share separation" model in balancing the interests of all parties, optimizing resource allocation, and promoting the sustainable development of rural economy, providing new ideas for rural economic construction.

Fire in house: investigation of the outbreak and spread of the fire in a countryside house

Fire in houses is a significant hazard often resulting in loss of life and substantial repair costs due to damage to the structure and contents. There is a clear need to prevent its ignition and spread to adjacent areas. This article presents the steps taken, namely, contacts, data collection, tests, analysis, and conclusions regarding the accident resulting from the outbreak and spread of a fire on 25 December 2020 in a traditional Portuguese house in Arganil, Portugal. An expert with specialised technical-scientific knowledge was requested to conduct this investigation, which involved observations and data analysis followed by laboratory tests. The work consists of carrying out observations and data analysis. Then, the observed and analysed data were laboratory tested to consistently identify characteristics that lead to the ignition and propagation of the fire. This work identified construction problems, materials used, and heat sources that are responsible for the accident. The conclusions may be used to avoid future incidents or accidents with houses of same construction type.

Research on Construction Technology of Steel Structure Tie Rod Arch Bridge with Less Support

In order to explore the installation method of the steel box tie-rod arch bridge across the canal, in order to meet the requirements of rapid installation under the condition of near the existing diagonal bridge. Based on qingshuihe Bridge of G50 Shanghai-Chongqing Expressway, the installation technology of steel box pole arch bridge is studied by combining theoretical analysis and field practice. This paper analyzes the construction problem of Qingshuihe Bridge and proposes an construction method of small supports and large sections. The oblique asymmetric beam arch is designed to avoid the influence on the channel headband. The installation process of bridge deck system is optimized, the bending moment of steel beam is effectively reduced, and the temporary span of beam beam installation is improved. The finite element analysis shows that the beam, arch ribs and other components are in good stress condition according to the asymmetric deformation of the boom force, and ensure the smooth installation of the beam and bridge deck.

Research on Spatial Elements of Barrier-Free Environment Construction in Urban Livable Streets: A Case Study of Pingguo Yuan Street in Shijingshan District

The study uses the Pingguo Yuan Street in Shijingshan District, Beijing as an example to analyze the current situation and problems of barrier-free environment construction in livable streets, and proposes corresponding optimization strategies. The research reveals numerous issues in the construction of barrier-free facilities in Pingguo Yuan Street, such as unreasonable design of paths, uneven distribution of facilities, unreasonable spatial scale, lack of identification systems, and many environmental obstacles. Consequently, the study proposes corresponding optimization strategies, providing useful references for researchers, government departments, and designers in the field of barrier-free environment construction in livable streets.

Quantum Binary Improved Artificial Bee Colony Algorithm to Solve the Spanning Tree Construction Problem in Vehicular Ad Hoc Network

Quantum Binary Improved Artificial Bee Colony Algorithm to Solve the Spanning Tree Construction Problem in Vehicular Ad Hoc Network

Research on the Influencing Factors of Second-Generation Chinese Cognitive Construction from the Perspective of Identity

Abstract: The cognitive construction issues of second-generation Chinese immigrants have received widespread attention, but there is still a lack of analysis from the perspective of identity recognition. This article analyzes the influencing factors of cognitive construction for second-generation Chinese immigrants from the viewpoint of identity recognition. This article analyzes how the cognitive construction and social concepts of second-generation Chinese immigrants are related to language and education. Based on this, there are some suggestions in the article. First, achieve the formation of diverse concepts among the second generation of Chinese descendants through family education. Second, from an individual perspective, making a balance between Eastern and Western values to form suitable values. Finally, respecting the cultures of various countries and integrating into mainstream society. Through these analyses and recommendations, it can gain a deeper understanding of the cognitive construction problems faced by second-generation Chinese immigrants and find effective solutions to promote their identity recognition and social integration.

Design and development of bridge erecting machine with small curve radius and bottom feeding beam

As a key equipment in highway and railway construction, bridge erecting machines directly affect the feasibility, progress, and quality of project implementation. In order to solve the problem that traditional bridge building machines are only suitable for application scenarios with large turning radii and large lifting sites, and have low lifting efficiency, which cannot meet the requirements of urban elevated bridge construction, a small radius bottom feeding beam bridge building machine suitable for urban highway and railway construction is proposed. The feasibility and reliability were verified through force analysis and finite element analysis; Design a secondary turning structure and bridge construction process for the front leg, adjusting the turning angle to around 7°, significantly reducing the turning radius of the bridge building machine; Propose a technology for feeding and lifting beams at the bottom of dual-use bridge decks for highways and railways. By vertically lifting beams and slabs, the lifting space is significantly reduced and the lifting efficiency is improved. Finally, a small radius bottom feeding beam bridge erecting machine was developed and tested and applied. The results show that the small radius bottom feeding beam bridge erecting machine designed in this article reduces the turning radius of traditional bridge erecting machines from over 300 m to about 80 m, making it possible to carry out projects that were originally impossible, and solving the problem of elevated bridge construction in limited urban spaces.

The Chinampa a Response to Climate Change: A Complex Model of Ancestral Wisdom for Urban Resilience

Introduction: In the context of climate change, cities face critical challenges in water management and sustainability. One of the most ingenious and adaptive procedures that has endured throughout history is that of chinampas, which is a model of sustainable agriculture, and reflects a way of life intimately connected with nature. Objective: Evaluate the possibility of incorporating the method based on the chinampas built by the Mexica culture in current cities to generate a complex model of urban resilience. Theoretical Framework: In the theoretical framework there are theories such as ecological utopia, dystopia, stationary urbanism addressed by Fernando Gaja, smart cities by Tim Campbell and sustainability from the perspective of Francisco Javier Aceves, in addition to the agroecology of Nicholls and the socioecological systems of Towers as main axes of analysis. Method: The methodology is based on complex systems from the approach of Edgar Morin and Rolando García, with stratification, and the application of different methods to form a complex unit that is a resilient city model with the use of chinampas. Results and Discussion: The excessive construction, pollution, traffic and various problems show an urban crisis that was drying up the basin of the Valley of Mexico and there are currently few areas where bodies of water and chinampas such as Xochimilco are still conserved with socio-ecological systems and agroecology. Research Implications: Urban resilience, which aims to recover from an impact caused by climate change to current cities, health, adequate habitability conditions, and natural resources, which is why searching for a resilient urban city model is a complex task. Originality/Value: It is based on the recovery of ancestral knowledge to reestablish healthy cities of the 21st century from sustainability and bioclimatics since chinampas are used by the Mexica culture in pre-Hispanic times.

PangeBlocks: customized construction of pangenome graphs via maximal blocks

BackgroundThe construction of a pangenome graph is a fundamental task in pangenomics. A natural theoretical question is how to formalize the computational problem of building an optimal pangenome graph, making explicit the underlying optimization criterion and the set of feasible solutions. Current approaches build a pangenome graph with some heuristics, without assuming some explicit optimization criteria. Thus it is unclear how a specific optimization criterion affects the graph topology and downstream analysis, like read mapping and variant calling.ResultsIn this paper, by leveraging the notion of maximal block in a Multiple Sequence Alignment (MSA), we reframe the pangenome graph construction problem as an exact cover problem on blocks called Minimum Weighted Block Cover (MWBC). Then we propose an Integer Linear Programming (ILP) formulation for the MWBC problem that allows us to study the most natural objective functions for building a graph. We provide an implementation of the ILP approach for solving the MWBC and we evaluate it on SARS-CoV-2 complete genomes, showing how different objective functions lead to pangenome graphs that have different properties, hinting that the specific downstream task can drive the graph construction phase.ConclusionWe show that a customized construction of a pangenome graph based on selecting objective functions has a direct impact on the resulting graphs. In particular, our formalization of the MWBC problem, based on finding an optimal subset of blocks covering an MSA, paves the way to novel practical approaches to graph representations of an MSA where the user can guide the construction.

Intelligent control of extra-high arch dams

Abstract At this stage, the intelligent construction system integrating sensing technology, communication transmission, data processing, and intelligent decision-making is becoming increasingly mature. It is fully applied in the construction industry. As a large-volume concrete building with concrete temperature control, the extra-high arch dam faces challenges such as high construction difficulty, management difficulty, and other thorny issues. By introducing an intelligent control system, real-time sensing during the pouring process of the extra-high arch dam allows for autonomous analysis to be conducted in a timely manner. Anticipation of various risks in the construction process and autonomous problem-solving are achieved through intelligent decision-making within the system. Artificial assistance makes up for the shortcomings of the intelligent construction system. Through the system’s own independent learning ability and continuous optimization, the problem of intelligent construction can be solved. It also can solve most of the problems in the dam pouring process, accelerate the project progress, significantly reduce the construction difficulty, improve the quality of dam construction, and improve the overall safety performance of the dam.

Analytical study on plastic loosening zone of weak surrounding rocks tunnel in high cold areas

AbstractThe analysis of plastic loosening zone of tunnels with cold condition, high in situ stress, and weak stratum is the key scientific problem of tunnel construction in cold areas. Based on the unified strength theory and considering the coupling effect of high in situ stress and low‐temperature field, the analytical model of the plastic loosening zone of tunnel surrounding rocks was proposed, and the influence laws of physical parameters (initial ground stress, freezing temperature, excavation radius, and intermediate principal stress) was explored. The results illustrate that: (1) with the coupling of low temperature and stress fields, the in‐situ stress has a more significant effect on the radius of the plastic loosening zone of the tunnel surrounding rocks, showing a nonlinear correlation. When the in situ stress is small, the influence of the temperature field on the radius of the plastic loosening zone is more obvious. (2) The radius of the plastic loosening zone of the tunnel surrounding rocks increases synchronously with the excavation radius and gradually decreases with the increase of the intermediate principal stress. (3) The greater the temperature difference in the low‐temperature field, the tunnel stability has a more significant response to the intermediate principal stress and is positively correlated with the coefficient of the intermediate principal stress. (4) In the actual project, the proposed model can well describe the mechanical behavior and deformation characteristics of tunnel surrounding rocks in low‐temperature environment, showing applicability. The research results are expected to provide a theoretical basis for the study of tunnel stability in cold areas.

Necessary and Sufficient Conditions for the Boundedness of Multiple Integral Operators with Super-Homogeneous Kernels in Weighted Lebesgue Space

Super-homogeneous functions including homogeneous functions, quasi-homogeneous functions, and several non-homogeneous functions are considered. Using the weight function method, the construction conditions of Hilbert-type multiple integral inequalities with super-homogeneous kernels are first discussed. Then, using the obtained results, the construction problem of bounded multiple integral operators with super-homogeneous kernels in weighted Lebesgue space is discussed, and the necessary and sufficient conditions for operator boundedness and the operator norm formula are obtained.

Study on Curriculum Construction of Law Major in Colleges and Universities Under the Background of New Liberal Arts

With the development of the new liberal arts construction, more attention has been paid to the education of legal talents in undergraduate colleges, which also puts forward deeper requirements for the curriculum construction of colleges and universities. Law curriculum as the focus of liberal arts education reform, it needs teachers to comprehensively deepen the reform of teaching, make full use of all kinds of technical resources to enrich the content of teaching, improve the quality of legal education, and cultivate students’ comprehensive quality. Based on this, the article deeply analyzes the ideas of college law curriculum construction under the background of new liberal arts, fully explains the connotation of liberal arts construction, on this basis, puts forward the principles of curriculum construction, explores the existing problems of college law curriculum construction under the background of new liberal arts, and on this basis, puts forward the path of college law curriculum construction under the background of new liberal arts for reference.

Research on the Loss Rule of the Leakage Problem in Residential Construction Based on Water Spray and Storage Tests

Leakage issues have received increasing attention as the most common and significant source of complaints in residential construction quality problems. In this study, based on the classification of residential construction leakage problems, 1947 water spray tests and 2333 water storage tests were conducted on 18 construction projects. An empirical analysis of 432 leakage cases was conducted to determine the loss law for a single leakage point as well as the loss laws for different grades of leakage problems. Through empirical analysis, it can be concluded that more than 90% of the leakage problems are third-level. To better understand the quantitative law of the residential construction leakage problem, a total loss law model was developed. Finally, the law of leakage loss in residential construction is summarized, and measures to reduce leakage loss in residential construction are proposed. This research can provide a theoretical basis and model tools for inherent defect insurance and help insurance companies control insurance risks and drive the promotion of inherent defect insurance.

Submerged and completely open solid–liquid triboelectric nanogenerator for water wave energy harvesting

AbstractTriboelectric nanogenerator (TENG) is an emerging wave energy harvesting technology with excellent potential. However, due to issues with sealing, anchoring, and difficult deployment over large areas, TENG still cannot achieve large‐scale wave energy capture. Here, a submerged and completely open solid–liquid TENG (SOSL‐TENG) is developed for ocean wave energy harvesting. The SOSL‐TENG is adapted to various water environments. Due to its simple structure, it is easy to deploy into various marine engineering facilities in service. Importantly, this not only solves the problem of difficult construction of TENG networks at present, but also effectively utilizes high‐quality wave energy resources. The working mechanism and output performance of the SOSL‐TENG are systematically investigated. With optimal triggering conditions, the transferred charge (Qtr) and short‐circuit current (Isc) of SOSL‐TENG are 2.58 μC and 85.9 μA, respectively. The wave tank experiment is taken for fully demonstrating the superiority of the SOSL‐TENG network in large‐scale collection and conversion of wave energy. Due to the excellent output performance, TENG can harvest wave energy to provide power for various commercial electronic devices such as LED beads, hygrothermograph, and warning lights. Importantly, the SOSL‐TENG networks realizes self‐powered for electrochemical systems, which provides a direction for energy cleanliness in industrial systems. This work provides a prospective strategy for large‐scale deployment of TENG applications, especially for harvesting wave energy in spray splash zones or at the surface of the water.image

SWMR Algorithm Approach for the Vendor Managed Inventory Problem when Static Demand Rates

In a two-phase supply chain with Vendor Managed Inventory (VMI) policies, the supplier takes on the duty of keeping its retailers' inventory up to date and making sure they never run out of stock. This is in addition to his inbound inventory. This study aims to combine the retailers in various set partitions or to maximize their distribution and inventory holding costs within the same set partition. This paper focuses on a two-stage supply chain made of a single warehouse and multiple retailers (SWMR) facing a static demand and implementing VMI. We proposed a model for coordinating the system with a two-phase solution method. The first phase is to minimize the overall inventory costs and, in the second phase, a constructive vehicle routing problem (VRP) heuristic is used to optimize the distribution costs by satisfying some additional restrictions. Results of this implementation of VMI in an illustrative supply chain case are shown and discussed in detail.

Design and Test of Hydraulic Bottom Seal Fracturing Tool for Coiled Tubing

Abstract As the main tool for reservoir reconstruction of Longdong shale reservoir in Changqing Oilfield, the coiled tubing bottom seal drag-segment fracturing tool is currently in the stage of scale promotion, providing tool support for the efficient development of Longdong shale oil. However, in the process of horizontal construction with large water vertical ratio and super long horizontal section, there are construction problems such as natural depth limitation of the tool and difficulty in setting the bottom packer, which seriously affect the construction efficiency and quality. In view of the above problems, this paper carried out the development of pumped coiled tubing hydraulic bottom seal drag-segment fracturing tool. With the technical ideas of pumping cup deepening and hydraulic setting bottom packer, the hydraulic setting type bottom packer, soluble cup pumping sub and supporting tools were designed and developed. By using the method of annular pumping and tubing accompanying injection, the tail cup pumping sub was used to generate throttle and larger cup outer diameter, forming a large hydraulic traction force to carry the tool string to break the depth limit. Without applying drilling pressure, the bottom packer was set by oil injection and displacement, and the setting state was lifted and lifted after the fracturing construction, providing a reliable tool scheme for solving the above engineering problems. The indoor evaluation results show that the traction effect of the bowl pumping short joint with small displacement of water is good, the bottom packer is smooth in the setting and unpacking action at 120°C, and the sealing is reliable under 70MPa pressure. The overall test of the tool string can realize the setting and unpacking action without the intervention of drill pressure. Six well tests were carried out in the field. The pumping depth was 430m under the condition of 740L/min water pumping displacement, and the oil injection displacement was increased to 550L/min. The hydraulic setting was fast and reliable, which effectively improved the construction capacity of the coiled tubing fracturing tool in the ultra-long horizontal well, greatly shortened the time consumption of interlayer conversion, and improved the speed and efficiency significantly.

Phrasem-Konstruktionen im Deutschen und Tschechischen. Eine Fallstudie zu der Phrasem-Konstruktion Es ist zum + Vinf [!] (substantivierter Verbinfinitiv)

The empirical study presents the problem of phraseme constructions (PhraCon) in current Germanic and international contrastive phraseological research. The article analyses the phraseme construction Es ist zum + Vinf [!] (substantivised verb infinitive). Es ist zum Heulen / Verzweifeln / Verrücktwerden / Lachen etc. will be focussed on from a contrastive German-Czech perspective with regard to its form and function in the text as well as its translation possibilities. Evidence from the parallel corpus InterCorp of the Czech National Corpus (CNK) will be analysed comparatively.