bluuebunny/crossref_metadata_2025 huggingface dataset:
Tailored Synergy: Synthesis and In-Depth Structural Analysis of x[Ni0.2Cu0.3Co0.5Fe2O4] + (1-x)[Ba0.7Sr0.3TiO3] Composites
Authors: Mathad Shridhar N
Published: March 2024

M E Composites with composition x[Ni0.2 Cu0.3 CO0.5 Fe2 O4 ] + (1-x)[Ba0.7Sr0.3TiO3 ], Where x varying from 0.1 to 0.4 in molar ratio, were prepared by standard double sintering ceramic technique. The presence of ferrites phase, namely [Ni0.2 Cu0.3 CO0.5 Fe2 O4 ] and ferroelectric phase, namely [Ba0.7Sr0.3TiO3 ], were confirmed by X-Ray Diffraction analysis, whereas SEM micrographs were obtained to study the morphology of samples. The x ray diffraction patterns exhibit a set of well-defined ferrites and ferroelectric peaks. The tetragonality ratio c/a, of the ferroelectric phase remains the same in all the samples, the porosity varies from 20% to30% while the average grain diameter lies in the range of 0.5µm to 2 µm.
AstroInformatics: Expanding New Perspectives on the Mysteries of the Universe
Authors: Wang Jie
Published: March 2024

The integration of astronomy and informatics has given rise to a vibrant emerging discipline known as AstroInformatics. This interdisciplinary field not only enriches our understanding of the universe but also presents unprecedented opportunities for the advancement of astronomy. This article aims to provide a preliminary exploration of the significance and future prospects of AstroInformatics, with the intention of offering a clear outline of its development trajectory
Effect of Different Cultural Treatments on Branching and Yield of Groundnut (Arachis hypogea L.)
Authors: J Harish
Published: March 2024

The experiment was carried out at college of agriculture, karekere, hassan agricultural farm during year June 2022 to November 2022. The objective of this investigation was to study the effects of five different treatments nipping, passing empty drums, withhold of irrigation, nipping without irrigation and remaining cultural practices done at 20,20,30,30 and 30 days after sowing on the number of branches and yield of groundnut. A randomized complete block design with four replications was used in this experiment. The data was recorded based on different treatments on above mentioned days before and after sowing. The recorded results were observed as follows: no of branches recorded were nipping, passing of empty drums, withholding of irrigation, nipping without irrigation and following usually recommended practices were 19,21,15,21 and 15 respectively. The yield obtained in different treatment plots were 46.6, 53.9, 38.4, 58.5 (failure due to heavy rain) and 38.4 Q/ha, respectively. So, by observing the above results, we can conclude that the passing empty drums method showed high branches and high yield compared to other treatments. So, this cultural treatment can be recommended to farmers for increasing both yield and branches.
Mastering the Electrocardiogram to Distinguish SVT from VT with Confidence: A Mini-Review
Authors: Mondal Sudipta
Published: March 2024

Precisely differentiating supraventricular tachycardia (SVT) from ventricular tachycardia (VT) is paramount for optimal therapeutic management. This critical distinction often hinges on the meticulous application of validated diagnostic algorithms. Over time, diverse groups have devised numerous algorithms, each striving for improved specificity, sensitivity, and reduced complexity. To facilitate differentiation, we provide a concise overview of these algorithms within this document
Design of Instrumentation and Control Components of Power Distribution Systems
Authors: Klimenko Y. A. , Lvovich Y. E. , Preobrazhensky A. P.
Published: March 2024

Introduction. In recent years, the development of high-voltage power systems has received a boost due to the need for infrastructural support for priority development areas. Universal models and algorithms are required to implement processes in power components and identify their optimal parameters. However, there are no such solutions. Accordingly, there are no ready-made subsystems with control and optimization algorithms adequate to the tasks under consideration. The objective of the presented research is to develop an optimization subsystem for the design of control and measurement components of power distribution systems.

Materials and Methods. Methods for constructing automated design systems, optimization, system analysis, mathematical modeling, and adaptive control were used. When selecting methods, we proceeded from the fact that the components of power distribution systems consisted of a finite number of elements. The synthesis of a power system includes tens or hundreds of sequential operations. This was taken into account in the developed models and algorithms.

Results. The possibilities of managing and monitoring manufacturing processes (MP) for the production of components of low-voltage power distribution systems were shown in terms of checking the operability and correct functioning of processing equipment. A modular structure was created to allow the integration of CAD output files into the manufacturing processes of energy distribution system components. A functional diagram of a subsystem for control and monitoring of the manufacturing processes of the production of components of power distribution systems was developed. The proposed schematic diagram of production control showed how the data collection subsystem, management system, and operating mechanisms were involved in the control of operations. The multi-level optimization module model created within the framework of this research sequentially optimized the service intensity of the i-th block, the input flow separation coefficients, and the priorities of the original data flows that form the input flow of the i-th block.

Discussion and Conclusion. The combined application of modeling, system analysis, and optimization methods maintains control of the accuracy of the generated power components. The algorithm for controlling electrical loads opens up opportunities for creating a mathematical model of a power supply system that combines management, control, and monitoring, which ultimately leads to an improvement in the quality of electric power. The solution can be in demand in the development of power systems of priority development areas.
“Coursebook or No Coursebook”? A False Dilemma
Authors: Ypsilanti Angeliki , Karras Ioannis
Published: March 2024

The outdated debate over whether an EFL coursebook is necessary or not seems as relevant as ever since it is by no means a self-evident truth to every EFL educator. This paper argues that among the range of factors affecting the assessment of a given textbook is the teacher’s promptness to promote closer collaboration with students through appropriate means. More specifically, a pre-use textbook evaluation through the compilation of an appropriate checklist was put to the test with the aim of checking the serviceability of the new coursebook for the first grade of Greek General Lyceum. The case of an EFL teacher who tried to predict the impact of a textbook on her specific teaching context indicated that the expectation of student inputs to the implementation of learning activities (e.g., participation in activities using technology) was valued as a key determinant in setting priorities for in-use textbook evaluation.
Application of two models of non-ideality of sources to increase the accuracy of luminous intensity measurements
Authors: Balaban Vasyl , Kupko Oleksandr
Published: March 2024

On the example of experimental studies of the luminous intensity of several light sources, it is shown that there are significant deviations of the luminous intensity dependence from the inverse-square law. Two models for estimating the luminous intensity for non-point light sources are proposed, theoretically studied and experimentally verified: the model of distance refinement and the model of additional sources.

In the first model, a constant correction is added to the distance measurement result. It can be determined provided that there is a maximum possible constancy of the estimate of the luminous intensity as the product of the measured illuminance and the square of the measured distance for different distances between the receiver and the source. In this case, the correction is constant, and the estimate of the luminous intensity depends on the distance between the source and the receiver. Alternatively, the luminous intensity and the correction to the measured distance can be determined by minimising the deviations of experimentally measured illuminances at different distances from the calculated ones. In this case, a constant luminous intensity and a constant distance correction are determined.

The second model is based on the assumption that deviations from the inverse-square law arise because of additional sources, such as reflections from screens, radiation traps, lamp glass, and others. In this model, the distances between the lamp filament and all additional elements are assumed to be known, and the luminous intensity estimates of additional sources are calculated provided that the deviation between the calculated and measured illuminances at different distances is minimised.

The considered models have been experimentally verified. The advantages and disadvantages of the models have been analysed, and recommendations for assessing the quality of the procedure for luminous intensity measurements have been given. Based on these models, it is proposed to develop a procedure that would allow assessing the quality of the installation for luminous intensity measurements.
The right to delayed parenthood/maternity – separate issues of legal regulation
Authors: Dutko A. O.
Published: March 2024

The article analyzes the peculiarities of legal relations arising in connection with the cryopreservation of human biological material – embryos and reproductive cells, namely: determining the origin of a child born in this way. It is noted that the birth of children is a component of the demographic policy of the state, and the use of assisted reproductive technologies can change the demographic situation in society for the better. Cryopreservation is relevant not only in cases when a couple who wants to have children have difficulties with conception, but also when such problems do not yet exist, but they may arise with a high probability – this applies to such categories of citizens who are undergoing treatment for oncological diseases with a risk of loss reproductive health, as well as citizens who constantly risk their lives and health due to their activities: military personnel, policemen or workers at factories with harmful working conditions.

The author notes that medical biotechnologies are becoming more and more diverse and effective, scientific achievements are penetrating deeper and deeper into the natural processes of human reproduction, therefore there is a need to resolve legal issues related to cryopreservation. And the realization of the right to cryopreservation requires legal regulation of so-called delayed parenthood.

From the point of view of family law, these relations are of interest in terms of the emergence of new family law relations. The author considers several models for determining the origin of a child born with the use of assisted reproductive technologies using cryopreserved reproductive cells or embryos. Separate issues of postmortem reproduction are considered.

The author concludes that there is a need for legislative regulation of gaps in the field of cryopreservation of reproductive cells and embryos, which will allow to ensure proper consolidation of the guarantee of the right to paternity/maternity and an effective mechanism for their implementation in cases of restriction of vital activity or death of a person.
Prospects for the use of artificial intelligence in civil justice
Authors: Skliarenko I. V.
Published: March 2024

The article discusses the general prospects for the use of artificial intelligence technology in civil proceedings as a main and auxiliary tool at the current stage of the development of this technology. The main approaches to defining the concept of artificial intelligence were studied and its classification into weak, strong and superintelligence was characterized. It is emphasized that justice is usually administered by professional judges, as high demands are placed on their legal knowledge and life experience. It is argued that equal replacement of a judge in civil proceedings with artificial intelligence technology is currently impossible. The reasons for the impossibility of such a replacement are analyzed, namely the complexity and multifacetedness of controversial private-law relations, the impossibility of taking into account moral and ethical aspects, the need for flexibility in decision-making, the problem of the nature of the initial algorithms of artificial intelligence, the transparency (motivation) of decisions, the problem of determining the guilty party in court cases errors, data protection issue. It is noted that these reasons have a technological and legal basis. A critical assessment of the state’s conceptual approaches to the development of artificial intelligence in the field of justice is provided. The directions of the auxiliary application of artificial intelligence technologies in civil proceedings, which are reduced to the automation of routine tasks, processing and analysis of large volumes of data and evidence, and increasing the accessibility of justice, are considered. It has been proven that the use of artificial intelligence technology provides better opportunities for the participants in the judicial process to realize their rights and obligations, including the processing of large amounts of information. The importance of ensuring a high level of information protection when using artificial intelligence during the administration of justice in civil cases is emphasized. The need for regulatory regulation of the use of artificial intelligence technology in civil proceedings in combination with other spheres of public administration and branches of law is substantiated. It is indicated that the wider application of artificial intelligence in civil proceedings will require new technological solutions and revision of the legal foundations of the judicial branch of government.
The concept of «complex-structural ownership» and the timeshare institute
Authors: Fathutdinova I. V.
Published: March 2024

The scientific article examines the concept of «complex-structural ownership», which is the basis of timeshare in foreign countries in order to choose the optimal legal basis for this institute in Ukraine. It was established that the concept of «complex structural property» gradually developed in parallel with the development of timeshare itself. In the early stages of development, the consumer bought an ownership interest in the property, which allowed him to use it for a fixed week during a certain season at the resort. Gradually, even more flexible products appeared on the timeshare market, even based on a point system. It was found that the state of development of this issue does not meet the needs of the recodification of the Central Committee of Ukraine and the improvement of the legal basis of timeshare in the conditions of the development of tourism.

Examples of the legislation of foreign countries are given, which, regulating the institution of timeshare, the conclusion of relevant contracts, also consolidate the approach to understanding the concept of «complex structural property», in particular the provisions of the Law on the Distribution of California Lands, the Law of the State of Florida «On the Vacation Plan and Timeshare», the Statute of the State of Nevada etc.

It was found that the concept of «complex structural property» in the legislation of various US states is connected with the concept of «undivided interests». This is quite an interesting approach, which is fully relevant to the legal nature of timeshare, which essentially also assumes the presence of «undivided interests» among several consumers, and in the context of the expansion of timeshare forms, the appearance of a point system, exchanges, cruise offers, the specified approach manifests itself even more pronounced. It was found that in the Romano-Germanic states, the legal nature of timeshare is considered through the prism of obligations and property rights.

It is substantiated that the concept of «complex-structural property» is based on the non-exhaustive list of rights of the owner, which is widespread in the Anglo-American private law doctrine. In the national doctrine of private law, more and more scientific studies are appearing, which justify that the rights of the owner are not limited to the classic triad of powers.

It has been proven that since complex-structural ownership is possible precisely in the case of property ownership by several co-owners, it is characterized by the features of joint ownership. It is proposed to distinguish between «simple joint ownership» and «complex structural joint ownership».
Improving normative drafting techniques in the field of state regulatory policy in the context of enhancing the effectiveness of the legal regime stimulating economic activities
Authors: Kurepina O. Yu.
Published: March 2024

It is argued that the future model of legal regulation of economic relations using a complex of stimulating legal means is laid down precisely by the regulatory act. It is proven that the effectiveness of organizing and conducting regulatory activities determines the degree of effectiveness of the stimulating legal regime of economic activity. It has been established that despite the obvious purpose of both regulatory and legislative activities to achieve increased efficiency of legal regulation of certain groups of social relations, choosing a less economically costly method of legal influence is a particular feature of regulatory activities. Cases have been identified where the state, using various legal techniques, excludes from the scope of the Law of Ukraine “On the Principles of State Regulatory Policy in the Field of Economic Activity” groups of social relations regulated by a system of legal norms, which is an integral element of the stimulating legal regime of economic activity. It is asserted that the legal techniques chosen by the state do not always correspond to the legal certainty, the “quality of the law”, which constitutes the essence of the rule of law principle, nullifying the purpose of legal regulation of social relations in a predictable manner. It has been established that the exclusion from the scope of the Law of Ukraine “On the Principles of State Regulatory Policy in the Field of Economic Activity” of a significant range of social relations has created conditions for the preparation of most regulatory legal acts, including those defining the principles of implementation of the stimulating legal regime of economic activity, circumventing the requirements imposed on regulatory activities. The provision on the expediency of bringing the legal techniques for determining the scope of application of the Law of Ukraine “On the Principles of State Regulatory Policy in the Field of Economic Activity” in line with the principles of normative drafting techniques embodied in the Law of Ukraine “On Legislative Activity” is substantiated. The provision regarding the inclusion in Article 3 of the Law of Ukraine “On the Principles of State Regulatory Policy in the Field of Economic Activity” of the norm that exceptions from the scope of this Law are made only by amending this Law is substantiated.
Legal regulation of labor relations in the field of labor protection supervision and control
Authors: Boyko A. O.
Published: March 2024

In the field of labor law, the legal regulation of labor relations in the field of labor protection is investigated, the corresponding measures of supervision and control are characterized, which, in addition to measures for violations of the requirements of labor protection legislation, provide for measures for their prevention and prevention. It is emphasized that state management of labor protection is carried out by the Cabinet of Ministers of Ukraine, the central body of executive power that implements state policy in the field of labor protection, ministries and other central bodies of executive power, the Council of Ministers of the Autonomous Republic of Crimea, local state administrations and local self-government bodies. It is noted that the powers in the field of labor protection of associations, corporations, concerns and other associations are determined by their charters or agreements between the enterprises that formed the association. In order to perform the functions delegated by the association, labor protection services are created in their apparatuses. The theoretical provisions are substantiated and practical recommendations are developed for improving the legal regulation of labor relations in the field of labor protection based on analysis methods and a systemic approach to generalization for evaluating the effectiveness of state management mechanisms in the field of labor protection. In addition, general scientific and empirical methods and tools of the science of labor law, methods of analysis and synthesis, comparison, summary and grouping were used. It was concluded that legal regulation in the field of occupational health and safety is a multilevel and complex functional mechanism, which at all levels of executive power controls and coordinates compliance with occupational health and safety at enterprises, institutions, and organizations regardless of their ownership, types of activity, and branch affiliation. It is emphasized that the existing system of state supervision and control over labor protection in Ukraine needs to be improved and brought into compliance with European standards.
Analysis of the classification of signs of the right to work by civil servants in the conditions of the European integration of Ukraine
Authors: Pikul V. P.
Published: March 2024

This article is devoted to analyzing the classification of signs of the right to work of civil servants. In modern society, the right to work for public servants is a key element in ensuring effective public service. The classification of the signs of this right is important for determining the duties and responsibilities of civil servants. In particular, this may include aspects such as professional qualifications, level of education, work experience, knowledge of legislation, and ethical standards. The specificity of the right to work for a civil servant is the existence of a valid contract that defines the terms of employment and the obligations of the parties. An important aspect is the ability to interact and cooperate with colleagues and senior managers, which contributes to building an effective work team.

It is expedient to summarize that the classification of signs of the right to work of civil servants is a relevant topic of research, which allows a better understanding of the main aspects and requirements for the activity of this category of employees. The study of this issue can be useful for improving the system of management of civil servants and increasing the efficiency of public administration as a whole.

The author analyzed the approaches of other scientists regarding the analysis of this or that aspect of the right to work of civil servants in the conditions of the European integration of Ukraine, as well as certain features or features of this legal phenomenon. Criticism of certain positions of scientists is provided, and the author’s own position is substantiated. The norms of current legislation (both constitutional and special) relating to the issue of the right to work of civil servants are given. The need to update and improve the current legislation in the specified area was emphasized.

The author of the article concludes that his proposed system of classification of the signs of the right to work of civil servants allows for a more thorough investigation of this problem. The scientist has examined in detail the essence and meaning of each of the mentioned general and special features of the right to work of civil servants.
Basics of worker safety under the draft Labour Code of Ukraine
Authors: Pozharova O. V. , Pozharov Y. V.
Published: March 2024

The article analyses the draft Labour Code of Ukraine with regard to legal regulation of safety and health of employees.

The author examines in detail Book Three «Safety and Health of Employees» of the draft Labour Code of Ukraine. It is established that this book contains the provisions of the draft Law of Ukraine «On Safety and Health of Workers at Work», which form a new system of management in this area.

The article analyses the state of implementation of the Council Directive 89/391/EEC, Council Directive 89/654/EEC of 30 November 1989 on minimum safety and health requirements in work areas; Council Directive 92/85/EEC of 19 October 1992 on measures to improve the safety and health at work of pregnant, recently given birth or lactating workers; Council Directive 94/33/EC of 22 June 1994 on the protection of young people at work in national legal practice.

The author analyses the current regulatory legal acts in the field of labour protection and draws attention to the need to update the national labour legislation. The main areas of reform in the field of safety are highlighted, namely: general requirements for occupational safety and health protection at workplaces, machine safety, electrical equipment safety, personal protective equipment, use of explosives, mining operations and noise protection.

The author establishes that the draft Labour Code of Ukraine provides for a change of legal emphasis from «labour safety» or «labour protection» to the European principle of «employee safety». The consequence of implementing this principle in practice will be the achievement of complete elimination or minimisation of risks to the life and health of each employee.

The author examines the rules governing the safety and health of certain categories of employees, namely, female employees (pregnant employees, employees who have recently given birth and breastfeeding employees), employees under the age of 18, employees with disabilities. Concludes that the draft Labour Code of Ukraine does not pay due attention to the specifics of work of employees who have children under the age of three, or have a child with a disability, or are raising a child on their own, which requires further elaboration.

Proposals are made regarding the need to enshrine in the draft Labour Code of Ukraine the minimum amount of funding for expenses incurred at the expense of the employer for the safety and health of employees at work.
The origins of Ukrainian family law in the context of the reception of Roman- Byzantine law in the Kyivan Rus
Authors: Kryzhevskyi A. V.
Published: March 2024

The article examines the peculiarities of the formation of family law in the Rus state through the prism of the reception of the relevant provisions of the Byzantine legislation. To achieve the validity of theoretical propositions and conclusions, the author used a set of philosophical, general scientific and special scientific methods, namely: historical-legal, comparative-legal, historical-functional, formal- legal, hermeneutic-legal, etc. The article emphasizes that the reception of Roman-Byzantine law took place through the translation into Church Slavonic of Byzantine legal texts (Eclogue, Prochiron, etc.), their thoughtful processing, subsequent rewriting and distribution. It is proven that during this process the provisions of Roman-Byzantine law are not blindly copied, but creatively reinterpreted, changed, adapted to Rus legal, political and socio-economic realities. It was determined that during the creation of local written sources of law (Russkaya Pravda, Church Statute of Prince Yaroslav), Byzantine legal acts were a kind of standard. It has been proven that the norms of Byzantine marriage and family law were most actively adopted in Rus. It was established that for most branches of Rus law, except for marriage and family, the reception of norms of Roman-Byzantine law had a limited character, and the provisions of Byzantine law often acted as «subsidiary» law. The author came to the conclusion that thanks to the Christian Church, provisions establishing the age of marriage, conditions for the validity of marriage, grounds for divorce of each spouse, etc., were adopted into Rus law. It was established that provisions borrowed from the Eclogue and Prochiron gave a woman in Rus the right to divorce, and the reasons for it were fixed by law. The thesis that the Byzantine institutions of family law adopted in the Rus era have become an integral part of the Ukrainian legal tradition is substantiated.
Distribution of Market Power, Endogenous Growth, and Monetary Policy
Authors:   International Monetary Fund, Gu Yumeng , Singh Sanjay R. ,   Federal Reserve Bank of San Francisco
Published: March 2024

We incorporate incumbent innovation in a Keynesian growth framework to generate an endogenous distribution of market power across firms. Existing firms increase markups over time through successful innovation. Entrant innovation disrupts the accumulation of market power by incumbents. Using this environment, we highlight a novel misallocation channel for monetary policy. A contractionary monetary policy shock causes an increase in markup dispersion across firms by discouraging entrant innovation relative to incumbent innovation. We characterize the circumstances when contractionary monetary policy may increase misallocation.
Analysis of deformations of road embankments founded on displacement columns improving soft subsoil
Authors: Szajna Waldemar , Bondareva Liudmyla , Szatanik Bartosz
Published: March 2024

Drilled displacement columns, constructed in the form of unreinforced or reinforced concrete elements, are currently a very commonly used method of improving soft subsoil, creating an alternative to more expensive pile foundations. A frequently used solution for improving soft soils of road or railway embankments is to design a regular pattern of columns of relatively small diameter. Columns along the perimeter of the improved area are reinforced with rigid steel profiles, while the internal ones are made as concrete elements. Column heads are usually covered with a load transfer platform (layer of compacted granular fill) which is additionally reinforced with geosynthetics. The application of soil improvement with displacement columns is not always successful. It is due to the errors and shortcomings occurring at the design stage, including simplifications in modelling, to construction faults, which may include insufficient experience of contractors and/or improper supervision. Referring to the real object that failed, the article provides the results of numerical parametric analyses taking into account the influence of the key design parameters such as: the stiffness of the load transfer layers, the amount and stiffness of the geosynthetic reinforcement as well as the column spacing. The article presents comparisons of numerical results obtained with the finite element analyses for various approaches to geometry modelling (axisymmetric, 2D and 3D). The simulations indicate that the use of the axisymmetric model of a single column in routine design may lead to the deformations exceeding the serviceability limit states.
The uncertainty of the calculative value of the volumetric flow rate in open channel
Authors: Oprychał Leszek , Bąk Aleksandra
Published: March 2024

The well-known Manning formula is usually used for the calculation of the calculative volumetric flow rate in a river or open canal. The discharge depends on the geometry of the channel, i.e. the water area, the wetted perimeter and the slope, as well as on the roughness coefficients. All these quantities are determined with some uncertainty. The article proposes a methodology for calculating the uncertainty of the roughness coefficients of the riverbed and the floodplain as well as the uncertainty of the geometric dimensions of the riverbed. Then, the method of calculating the uncertainty of the calculative discharge is then given. If these uncertainties are taken into consideration in the process of discharge calculation, then, as has been demonstrated for a hypothetical river channel, the ratio of the uncertainty to the calculated value of the discharge will change from several dozen percent in case of small flows to about ten percent in case of big, flood flows. It has also been shown that the uncertainty of the roughness coefficients has the biggest influence on the uncertainty of the flow rate. The presented calculations show that in order to take into account the influence of uncertainty of linear dimensions and roughness coefficients, the engineer designing the riverbed should assume for the calculations the flow rate increased by 10% then design flow. The obtained results can be used for homogeneous flows only, which is usually assumed in practical engineering calculations.
Safety assessment of the construction of double track tunnels underneah exsiting railway tunnels
Authors: Guo Fengfeng , Chen Yupeng , Zhang Yongjie , Feng Qi , Cui Da
Published: March 2024

The ground disturbance caused by the tunnel construction will inevitably have an impact on the upper part of the constructed tunnel structure, and the railroad tunnel requires a very high level of control over the structural settlement deformation. For the problem of double-hole tunnel under the built tunnel, this paper takes Chongqing Mingyue Mountain Tunnel under the built Shanghai-Rong Railway Paihua Cave tunnel and Zheng-Yu Railway tunnel as the engineering background, and starts from the mechanism of ground loss caused by tunnel excavation, firstly, the settlement at the height of the existing tunnel strata is obtained through theoretical analysis, and the new Mingyue Mountain Tunnel under the Shanghai-Rong Railway tunnel is determined to be a more dangerous section. Further simulate and calculate the dynamic excavation process of the new double-hole tunnel underpass, and study the settlement deformation law of the Mingyue Mountain Tunnel underpassing the Hurong Railway Tunnel. According to the requirements of railroad tunnel for settlement deformation control, the new tunnel is determined to be constructed by step method to ensure the safety of railroad tunnel. The shortcomings of the theoretical calculation are analyzed to illustrate the important role of numerical simulation in the evaluation of tunnel underpass projects.
A new model for predicting the axial compression capacity of reinforced concrete cylinders strengthened with CFRP
Authors: Guo Guang , Zhou Li , Wang Bangkang
Published: March 2024

Numerous scholars have identified the shortcomings of imprecise terminology and substantial computational inaccuracies in the current models for predicting the axial compression capacity of CFRPstrengthened reinforced concrete (RC) cylinders. To improve the prediction accuracy of the axial compressive capacity model for CFRP-strengthened RC cylinders, the present axial compressive capacity model for CFRP-strengthened RC cylinders was scrutinized and evaluated. Drawing on Mander’s constraint theory and the concrete triaxial strength model, a novel axial compressive capacity model for CFRP-strengthened RC cylinders was proposed. This study collected 116 experimental data on the axial compression of CFRP-strengthened RC cylinders and analyzed the accuracy of various models using the data. The findings indicate that the model proposed in this study outperforms other models in predicting axial compression capacity and demonstrates high prediction accuracy. Furthermore, an analysis is conducted on the variation law of the model’s predicted value with respect to the design parameters. The proposed model in this study identifies concrete strength, stirrup spacing, and elastic modulus of CFRP as the primary factors that influence the axial compression capacity of CFRP-strengthened RC cylinders.
A study of control scheme of debris flows and geological disasters in the Shiwei river basin
Authors: Wu Hanhui
Published: March 2024

The basic characteristics of debris flows in the Shiwei river basin are summarized through the field investigation on debris flows in the Shiwei river basin and analysis on formation conditions of debris flows from three aspects, i.e. geological environment, geological structure and neotectonic movement, as well as seismic action. Based on this, the stability of landslide in the Shiwei river basin is analyzed and calculated, and the stability coefficient of landslide is obtained. The debris flows in the Shiwei river basin will directly damage and threaten the county town, while other geological disasters such as landslide, collapse, slope sliding & collapse and potentially unstable slopes will indirectly damage and threaten the county town. The landslide form is clear, and the landslide stability calculation shows that the landslide body is generally stable – basically stable, but partially unstable – less stable. The “blocking + discharging” comprehensive control scheme is proposed according to the formation conditions and development characteristics of debris flows in the Shiwei river basin, and the study findings can be used as a reference for similar projects.
Ground settlement and estimation of maximum settlement value in adjacent foundation pit excavation
Authors: Wu Yan
Published: March 2024

The excavation of adjacent pits following the initial foundation pit excavation can significantly influence ground settlement. Using a foundation pit excavation project in Changzhou as a prototype, this study employed the numerical simulation method in conjunction with the HSS model to analyze the settlement deformation characteristics of the original excavation and compare them with the recorded monitoring values. In this study, the analysis focused on the ground settlement between two pits by varying the spacing between them at different excavation depths. The findings revealed that the ground settlement does not exhibit a significant increase when the new pit is excavated at a shallow depth. However, it rapidly increases when the excavation depth of the new pit surpasses that of the existing pit. Furthermore, an increase in the distance between the two pits causes the maximum settlement position to shift towards the edge of the new pit. The maximum ground settlement is found to have a linear relationship with both the maximum horizontal displacement of the two pits and the spacing between them.
Force analysis and treatments for Lidong tunnel of Renxin expressway crossing karst caves
Authors: Zhu Kai , Zhang Kui , Wu Xiang-Dong , Chen Xiang-Ge
Published: March 2024

There are several large karst caves at haunch part of the Lidong Tunnel during construction, together with inrush water due to high pressure within these caves. In light of it, this paper takes YK342+113 section as an example and adopts finite difference software FLAC 3D, so as to analyze tunnel deformation when crossing karst caves under six different working conditions, including with or without karst cave, before and after karst treatment, along with support locations. According to analysis results: First, the wall rock mainly had deformation at tunnel vault when evacuating at the third bench, which is a critical monitoring focus for tunnel construction; Second, karst cave treatment contributed to better conduct forces on both sides of wall rock, thus reducing vault settlement, while not affecting horizontal convergence and upturn of vaults; Third, treatment measures were proved to be effective in minimizing wall rock deformation by comparing deformation curves under different conditions; Fourth, after treatment measures, the angular points within the cave’s chamber had stress concentration, which might cause secondary collapse. Field monitoring data revealed that the final settlement of the tunnel vault was relatively consistent with the numerical analysis results, with a distinct change in daily settlement after initial support construction. By integrating numerical analysis and field monitoring, the rationality of the karst treatment plan was fully verified, providing a valuable reference for similar projects.
Promoting access to care in pyometra treatment: pathways to collaboration between high-quality, high-volume spay-neuter clinics and private practices
Authors: Turner Jennifer W. C. , McCallin Ashlee J. , Kreisler Rachael E.
Published: March 2024

OBJECTIVE

To compare results from 2 previously published surveys aimed at determining how pyometra is treated in high-quality, high-volume spay-neuter clinics (HQHVSNCs) and private practices (PPs), with a specific focus on identifying opportunities for partnership between the clinic types to improve access to care in pyometra treatment.

SAMPLE

Responses from 123 PPs and 87 HQHVSNCs.

METHODS

A previously published survey of PPs conducted from June to July 2021 and a similar previously published survey of HQHVSNCs conducted from June to July 2020 were compared regarding demographics, pyometra treatment availability, estimated outcome, alternative outcome, disruption, cost, and protocol between HQHVSNCs and PPs. A comparison was also run of the surveys’ responses regarding referral of a pyometra to an HQHVSNC by a PP.

RESULTS

Although PPs estimated that economic euthanasia is the most likely alternative outcome for 13% of patients unable to access care at their practice, 80% would be reluctant to refer to an HQHVSNC. The 3 primary reasons indicated by PPs with a reluctance to refer were a perceived lack of prompt appointment availability (20%), lack of aftercare (18%), and lack of adequate equipment (14%). In contrast, most HQHVSNCs estimated that they generally accept referrals the same day (50%) or the next day (30%) and 95% of HQHVSNCs reported having the resources needed to treat most pyometras.

CLINICAL RELEVANCE

There are several opportunities for partnership between PPs and HQHVSNCs in the treatment of pyometra. The most frequent concerns expressed by PPs regarding referral to HQHVSNCs were not shared by HQHVSNCs or could be ameliorated by referral to an HQHVSNC for surgery and transfer back to the PP for aftercare.
Research on Conservation and Restoration Methods of Museum Artifacts in the Context of Artificial Intelligence
Authors: Wang Jingfang , Fan Junsheng
Published: March 2024

In the era of artificial intelligence, the conservation and restoration of museum artifacts encounter both new possibilities and hurdles. The limitations of conventional conservation techniques, in terms of efficiency and accuracy, are becoming increasingly apparent. This study explores the potential of 3D reconstruction technologies, SIFT algorithms, and Poisson’s equation to revolutionize the digital restoration of cultural relics. These advanced approaches allow for precise, efficient restorations and the ability to undertake complex projects without risking harm to the original items. Our approach integrates cutting-edge algorithms to tailor 3D reconstruction strategies for museum artifacts, culminating in creating a comprehensive digital artifact database. Through the innovative use of feature point detection and texture synthesis, we have achieved notable successes, including a 12% improvement in 3D model accuracy and a significant enhancement in the automation of the restoration process. With an SSIM value of 0.9964 for restored images, our method demonstrates superiority over traditional restoration techniques, marking a significant stride towards the efficient digital preservation of cultural heritage.
Research on Digital Design of Modern Sculpture in New Media Era
Authors: Chen Xiaozhong , Zhang Chaoyang
Published: March 2024

This paper is dedicated to exploring the digital design of modern sculpture in the era of new media, addressing the challenges and opportunities encountered by traditional sculpture in digital transformation. Considering the innovation brought by digital technology to artistic creation, the precision and efficiency of sculpture digitization are improved by introducing advanced NURBS method and FCM clustering algorithm through precise analysis and characterization of surface geometric parameters of three-dimensional sculptures. The surface geometric parameters and characteristics of three-dimensional sculptures are analyzed using non-uniform rational B-spline (NURBS) and fuzzy C-mean (FCM) clustering algorithms. The high-order surfaces of the sculptures can be represented effectively by the NURBS method, whereas the FCM clustering algorithms exhibit highly efficient performance in surface partitioning planning. The NURBS-based FCM algorithm can reduce the root-mean-square error of point cloud splicing to 0.0853 mm, reduce the number of iterations to 3, and shorten the algorithm’s running time to 18.46 seconds. The practice of digital sculpture application shows that the method improves work efficiency and reduces production costs. The digital design method proposed in this study provides a new way of producing and creating modern sculpture, which helps develop and preserve traditional sculpture art in the new media era.
Study on the Visual Reconstruction Path of Historical and Cultural Communication in the Information Age
Authors: Zhang Xiaoming
Published: March 2024

The advent of the information age has ushered in a new epoch for transmitting history and culture, fundamentally reshaped by digital and visual media innovations. This research explores the potent impact of visual reconstruction on the conveyance of historical and cultural narratives, spotlighting a significant leap in public engagement. From 2012 to 2019, the audience for digital historical Content witnessed an astounding growth from 1.35 million to 26.18 million—an 18.38-fold increase. The study demonstrates that visual methods make history and culture more captivating and instructive and drastically boost user interaction, with Content receiving an average of 192,700 likes. Through a set of targeted recommendations, this paper aims to refine the visual presentation on digital platforms and amplify the interactivity of historical and cultural education, offering strategic insights for enhancing the digital and visual storytelling of our past.
Reform and Innovation of Ideological and Political Education Teaching Mode in Colleges and Universities in the Context of Information Technology Empowerment
Authors: Wu Xiaoying
Published: March 2024

In the rapidly evolving landscape of higher education, integrating digital advancements presents challenges and opportunities for ideological and political education. This research delves into the intersection of information technology and educational methodology, proposing a novel approach to teaching civics and politics. We accurately identify student behavioral patterns by applying a sophisticated clustering analysis through density optimization K-means, NN-Stacking, and Stacking fusion techniques, thereby tailoring educational content more effectively. Implementing this data-driven teaching model significantly boosts student outcomes in civics education, evidenced by an average score increase of 13.306 points. Furthermore, statistical Analysis (P = 0.0433 < 0.05) validates the enhanced impact of this method compared to traditional pedagogies. This study underscores the transformative power of information technology in enriching ideological and political education, paving the way for innovative teaching strategies.