bluuebunny/crossref_metadata_2025 huggingface dataset:
Dynamic Optimization of Robot Automatic Control System Based on Differential Algebraic Equations
Authors: Wang Shulei , Lu Shiting
Published: April 2023

In order to understand the different performances of robots under different control systems, the author has carried out dynamic optimization research on the control system of robots combined with differential algebraic equations. In this study, the general form of the discrete differential-algebraic equation (DAE) optimization problem using the Orthogonal Configuration of Finite Element (OCFE) method is deeply analyzed, and the equivalent conditions of the direct discrete scheme and the indirect discrete scheme are obtained through rigorous proof. On this basis, a variety of common configuration methods are simulated and analyzed, and it is found that indirect Lobatto configuration can achieve better results in many aspects. The results show that the discrete algorithm using differential algebraic equations can effectively achieve dynamic optimization of the control system, thus achieving the author’s research purpose.
Formation mechanism of financial vulnerability in rural China based on Markov model and countermeasures
Authors: Cheng Kangkang
Published: April 2023

As an important part of the national economy, finance plays a leading role in the configuration of the daily production life of urban and rural enterprises and residents. In order to promote the further development of China’s rural economy, deepen rural financial reform, and seek the formation mechanism and countermeasures of China’s rural financial vulnerability, this paper proposes a research method based on Markov model for analyzing the formation mechanism and countermeasures of China’s rural financial vulnerability. The results of the study show that the method effectively reveals an overall decreasing trend of rural financial vulnerability in China in recent years. In response, more reasonable rural financial institutions should be established to optimize the rural industrial structure and improve the ability to prevent rural financial risks, while conducting dynamic organizational management to ensure that the organizational structure and organizational management of rural finance must be compatible with the coordinated development of the rural economy and finance.
Deep learning-based foreign object detection method for aviation runways
Authors: Wang Zhe
Published: April 2023

Airport runway foreign object detection systems can quickly and accurately detect and identify foreign runway objects, which is significant for ensuring airport flight safety. Because of the drawbacks shown by the algorithm, the paper proposes to combine a new system scheme based on deep learning to obtain multiple feature information for identifying foreign objects on airport runways and improve the recognition accuracy of foreign object detection. This paper designs and constructs a dataset for accomplishing airport runway foreign object detection based on the data distribution and attribute semantics of actual airport runway foreign object scenarios and the technical features of deep learning, designs FOD detection and multi-attribute recognition networks, further design algorithms, and perform validation. The results show that the deep learning technology can accomplish all tasks of the airport runway foreign object detection system, which has not only good robustness to different environments but also has practical value for multi-tasking, and the localization task can accurately obtain the location information of foreign objects and improve the recognition accuracy of foreign object detection. Therefore, the deep learning-based airport runway foreign object recognition system designed in this paper is effective and can improve the accuracy of foreign object recognition.
The Evaluation Model of College Students’ Mental Health Under the Fractional Differential Equation
Authors: Zhang Linjun
Published: April 2023

This paper uses fractional differential equations to evaluate the mental health of college students. The author first proposes different emotional possibility spaces, such as emotional energy, emotional intensity, and emotional entropy. Secondly, this paper uses Markov chains, fractional differential equations, and other methods to construct emotional models. Its function is a description of psychological characteristics and psychological conditions. Finally, numerical simulations are used to apply the proposed model. This model can well reflect the autonomous transmission of human emotions. This model can provide a new method for establishing the mathematical model of the mental intelligence evaluation system and the mental decision-making system.
Application of grey correlation degree algorithm in the evaluation system of college students’ innovation and entrepreneurship in applied undergraduate institutions
Authors: Zhang Fangfang , Wang Kunfan
Published: April 2023

Innovation and entrepreneurship is the theme of today’s era and are powerful engine to promote a new round of high-quality development of the national economy. The level of entrepreneurial education has become a key indicator for evaluating the level of operation of applied undergraduate institutions and the quality of comprehensive education. This paper focuses on applying the gray correlation algorithm in the evaluation system of college students’ entrepreneurial activities based on innovation in applied undergraduate institutions. Firstly, we understand the development process and principle of the gray correlation algorithm, establish the gray correlation algorithm model, collect the index data of many applied undergraduate institutions(primary index: 5, secondary index: 21) and analyze them. The analysis shows that the correlation degree of the quality of education in the subject of college students in 8 universities is E (0.3178) > G (0.240) > F (0.1409) > H (0.04412) > D (0.0398) > B (0.390) > C (0.0389) > A (0.0263), and the analysis results are helpful for us to grasp the main contradiction of the problem and improve the quality of education in the subject. The main contradiction of the problem, improve students’ entrepreneurial ability based on innovation and contribute to the improvement of Chinese international economic status.
Ancient Building Surveying and Mapping Modeling Protection System Based on Lagrangian Mathematical Equation
Authors: Ren Junlong
Published: April 2023

The primary data model of the current point cloud is still the organization of discrete points. Point clouds and patterns are independent of each other. Firstly, this paper establishes the data structure of multi-layer integrated ancient buildings based on the point cloud model. The purpose is to adapt to ancient buildings’ laser point cloud processing technology. Then this paper uses Lagrangian mathematics to model the point cloud pattern. Finally, the paper verifies that the cartographic model of ancient buildings established by the Lagrangian formula is smooth and accurate. The model can express detailed information about ancient buildings.
Quantitative Analysis of the Influence of Coal Mining on the Underflow Zone of Rivers by Using Double Integro-differential Equations
Authors: Wan Yuan , Zhang Chen , Wang Jing , Cai Yuntao , Fu Jia , Guo Qing , Sun Yuxin , Zhou Ning , Hu Anqi
Published: April 2023

The global ecological environment is fragile, and large-scale coal mining has accelerated the loss of water resources, but it is difficult to quantify its impact. Studies have found that large-scale coal mining has a particularly large impact on the underflow zone of rivers, but blind mining affects environmental damage and loses the water volume of the river. The lack of a compensation mechanism for water damage caused by coal mining often exacerbates the province’s fragile water environment. This paper analyzes the prediction of the impact of coal mining on the underflow zone of the river. First of all, determine the mining area of the mine and collect and collect data. Then, the lost water volume was calculated as a predicted score using the double integro-differential equation. Finally, the GA-BiLSTM model is proposed to predict the lost water capacity. The experimental results show that the mean absolute error (MAE), root mean square (RMSE), and prediction pass rate are 11.78/%, 24.87/%, and 92/%, respectively, and the average relative error is only 9.98%. Compared with BP, SVM, LSTM, Bi-LSTM neural network model has better prediction accuracy. The experimental results also show that the model has good reliability and practicability, which can provide a new idea and method for the new analysis of the impact of coal mining on the underflow zone of the river.
Cost management of power grid transmission and substation project based on BIM technology
Authors: Wang Songsong , Qiao Wenxuan , Wang Lei , Shen Zhewei , Yang Pengju , Bian Li
Published: April 2023

With the rapid development of China’s electric power industry, the cost management of electric power projects, which is closely related to the power grid transmission and substation projects, has become more and more important. Do a good investment feasibility analysis of power projects. Optimize power engineering design. Reasonable determination of power project cost and effective control of power project cost are the main problems to be solved by the project cost management of power grid transmission and transformation projects. In this paper, DCN-BIM model is established based on DCN algorithm as the theory. A detailed calculation and analysis of the influencing factors and stage share of the cost management of power grid transmission and substation projects is carried out. Through calculation, it can be seen that the share of power products in the project cost is about 15.43% due to their special characteristics. The lowest cost share in the project cost is the project tender. Its share is only 10.03%. The highest cost share is for equipment materials. Its cost share is as high as 51.34%. The design phase accounted for 23% of the cost. The lowest cost share in the bidding phase was only 21%.
Design and research of environmentally friendly field sewage purification mechanical device
Authors: Zhang Lirong , Zhang Wei , Zhang Huifang , Yang Guijuan
Published: April 2023

The shortage of water resources has become a serious constraint to the sustainable development of the country’s economy and society. The environmentally friendly field sewage purification device is one of the effective ways to reduce water pollution and solve the water shortage problem. In this paper, the RBF-purification model is used as a calculation tool to study the economic feasibility of the environmentally friendly field sewage purification machinery and its equipment maintenance. The calculation results show that the distance benefit of field sewage purification is 13%. The benefit share of comprehensive economic benefit is the highest, 41%. The share of environmental benefits is 39%. The professionalism of the equipment users has the highest percentage of the problems that need to be maintained in the field wastewater purification equipment, at 54%. The percentage of equipment operation and management was 27%. The smallest percentage is for equipment maintenance with 19%.
Adaptive fusion of multi-exposure images based on perceptron model
Authors: Mei Jianqiang , Chen Wanyan , Li Biyuan , Li Shixin , Zhang Jun , Yan Jun
Published: April 2023

Multi-exposure image fusion as a technical means to bridge the dynamic range gap between real scenes and image acquisition devices, which makes the fused images better quality and more realistic and vivid simulation of real scenes, has been widely concerned by scholars from various countries. In order to improve the adaptive fusion effect of multi-exposure images, this paper proposes a fusion algorithm based on multilayer perceptron (MLP) based on the perceptron model and verifies the feasibility of the algorithm by the peak signal-to-noise ratio (PSNR), correlation coefficient (PCC), structural similarity (SSMI) and HDR-VDR-2, an evaluation index of HDR image quality. Comparison with other algorithms revealed that the average PSNR of the MLP algorithm improved by 4.43% over the Ma algorithm, 7.88% over the Vanmail algorithm, 10.30% over the FMMR algorithm, 11.19% over the PMF algorithm, and 11.19% over the PMF algorithm. For PCC, the MLP algorithm improves by 20.14%, 17.46%, 2.31%, 11.24%, and 15.36% over the other algorithms in that order. For SSMI, the MLP algorithm improved by 16.99%, 8.96%, 17.17%, 14.41%, and 4.85% over the other algorithms, in that order. For HDR-VDR-2, the MLP algorithm improved by 3.02%, 2.79%, 6.84%, 4.90%, and 6.55% over the other algorithms, in that order. The results show that the MLP algorithm can avoid image artifacts while retaining more details. The MLP-based adaptive fusion method is a step further in the theoretical study of multi-exposure image fusion, which is of great significance for subsequent research and practical application by related technology vendors.
Research on the value of modern vernacular literature in contemporary rural construction based on ADDIE model
Authors: Niu Yonghua , Li Nan
Published: April 2023

In order to promote the development of rural construction and optimize the resources of modern vernacular literature, this paper proposes a video teaching resource platform of modern vernacular literature based on the construction of the ADDIE model to analyze the value orientation of modern vernacular literature in contemporary rural construction. Through the ADDIE model structure, the evaluation indexes are divided into target layer A, criterion layer Bn, and sub-criterion layer Cn, and the teaching scoring weights are calculated so as to construct an effective teaching system of modern vernacular literature. The consistency principle of the teaching system is applied to calculate the mutual inverse judgment matrix, and the interval weighting algorithm is used to make the differences between the ranking vectors continuous and, thus, to comprehensively judge the value research orientation of contemporary rural construction. In order to verify the feasibility of the teaching resource platform of modern vernacular literature video built based on the ADDIE model, the teaching practice effect test is conducted on it. The experiment proves: In the significance test, the average score of post-test in village B is 85.9, which is 24.5 points higher than the average score of 61.4 in the pre-test. And the test of equality of variance Sig=0.945>0.05, significance (two-tailed) P=0.004<0.05. It indicates that modern vernacular literature has a stable guiding effect on the construction of contemporary villages and is conducive to the promotion of rural economic development.
Design of a mechanical automatic transmission system for automobiles based on torsional vibration damping
Authors: Liu Xing
Published: April 2023

In order to reduce the vibration damage of the engine and improve the automatic transmission adjustment performance of the automobile, an automatic transmission system based on torsional damping is constructed in this paper to optimize the hardware function of the shift speed. The torsional damper is used as the core control element to reciprocate the automotive mechanical automatic transmission system, and the calculation method of torsional vibration analysis of the crankshaft shaft system is used to determine the indexes of rotational inertia, stiffness, and damping parameters of torsional vibration. The damping coefficient values are set near the equilibrium point, and the loss factor of the automatic transmission system is signal processed to obtain the best damping effect. Using the intrinsic frequency as the central processing unit of the automatic transmission system, the differential equation is used to calculate the excitation torque vector of each cylinder of the engine, and the characteristic module of the automatic transmission system is developed. The tests showed that the cylinder burst pressure of the automatic transmission system with the torsional damper reached a maximum of 67.9 pressure at 4800 amp. The crankshaft front-end torsional angle of the 4th-order main harmonic excitation reached a maximum of 0.57 degrees, which exceeded the engineering allowance of 0.2 degrees and reduced the automatic shift shock by about 28.36%. It indicates that the torsional damper can improve the control performance of the automatic transmission system, which is conducive to enhancing the stability and self-adaptive capability of the transmission adjustment.
A multidimensional interpretation of Marxist theory based on a decentralized Internet perspective
Authors: Li Nan , Niu Yonghua
Published: April 2023

Constantly promoting theoretical innovation is the key to the perpetual vitality and vigor of Marxism. Marxist theory interpretation can provide new perspectives, new assertions, and new requirements for adhering to the basic principles of Marxism in line with the requirements of the times, national characteristics, and practical needs, and is the main basis for the formation, development, and renewal of the theoretical paradigm. Therefore, Spring+SpringMVC+Mybatis is used as the back-end development framework of the decentralized Internet to establish the decentralized Internet model used for interpreting Marxist theories. It is realized through the stages of theoretical semantic representation, multi-dimensional feature extraction, and classification. According to the multidimensional interpretation effect, the classification recall of the theoretical interpretation dimensions obtained after using the decentralized Internet model increases from 59.15%, 58.84%, 61.21%, 62.79% to 69.49%, 72.03%, 71.87%, 72.9%, and the average running speed of 9.21s decreases significantly to 3.84s. Portability, accessibility, interpretation completeness and contextual integration, depth of understanding indexes of ranking, accessibility, interpretive completeness, and contextual integration, depth of understanding, interpretive adequacy, and six-theory coverage reached 89.26%, 91.45%, 90.75%, 92.84%, 93.23%, 96.29%, and 99.12%. It shows that the decentralized Internet interpretation method of Marxist theory can grasp the scientific connotation and inner mechanism of theoretical development, trace the origin from ideas and perspectives related to the concept and summarize and interpret the background, reality, gist, content structure, and its contemporary significance under the new era discourse, so as to better implement and practice Marxist theory.
The cardiovascular promotion of college taekwondo based on fractional differential equation
Authors: Li Lei
Published: April 2023

The application of fractional partial differential equations (FPDEs) in college taekwondo has attracted more and more attention. Different FPDEs models have been applied to more and more fields, including: Materials, mechanics, and biological systems, and found that FPDEs have more advantages than integer order equation models in studying some materials with memory processes, genetic properties, and heterogeneous materials. The progress of FPDEs in university taekwondo has aroused people's interest in studying numerical algorithms. At present, the management of cardiovascular disease is mainly focused on rescue, drug treatment and revascularization at the onset of the disease, while less attention is paid to the prevention and prognosis management after treatment, leading to the increase of repeated diseases, readmission rate and mortality of patients. With the upsurge of heart rehabilitation dominated by exercise prescriptions, scientific aerobic exercise has gained more and more benefits. After 24 weeks of taekwondo intervention training, the author found that taekwondo exercise had a positive impact on its heart rate variability parameters (mean heart rate, RMSSD, LFnorm, HFnorm, HF), suggesting that taekwondo exercise may improve myocardial blood supply by regulating autonomic nerves. In addition, the Mate analysis of the effect of heart rehabilitation based on taekwondo on patients with coronary heart disease shows that taekwondo has a significant role in improving the aerobic endurance and mental health of patients with coronary heart disease.
Perancangan Alat Pengumpul Jelaga di Kendaraan Beroda Empat
Authors: William Vanessa , Widyanto David
Published: April 2023

Jelaga atau PM 2.5 merupakan salah satu partikel polusi yang dihasilkan dari pembakaran tidak sempurna dari mesin pembakaran yang biasa digunakan pada kendaraan bermotor. Pada masa ini di kota metropolitan seperti Jakarta, konsentrasi jelaga di udara terus meningkat sehingga mengancam kesehatan manusia dan keseimbangan lingkungan. Faktor-faktor utama yang menyebabkan peningkatan konsentrasi jelaga di Jakarta adalah peningkatan jumlah kendaraan bermotor sebagai alat transportasi sehari-hari. Penelitian ini bertujuan untuk merancang sebuah alat pengumpul jelaga yang mudah digunakan dan dipasang ke kendaraan bermotor serta efisien dalam ekstraksi jelaga. Penulis merancang produk ini juga bertujuan untuk mengurangi jelaga di udara dan membantu mengajak masyarakat terlibat dalam proses tersebut. Dalam proses perancangan, penulis melakukan studi literatur, observasi pada knalpot kendaraan bermotor, mencari data statistik, menyusun analisa permasalahan, dan eksperimen. Data-data yang terkumpul kemudian diuji berdasarkan beberapa prinsip desain sehingga menghasilkan solusi yang ideal. Studi ini merupakan pengembangan prototype pertama yang masih dalam tahap pengembangan dan produk yang dirancang oleh penulis berhasil menarik perhatian calon pengguna dari segi konsep dan eksekusi desain.
Accounting for the Influence of the Superposition of Cycles of Economic Activity in the Transformation of Management Institutions in Modern Conditions
Authors: Tebekin A. V. , Khoreva A. V.
Published: April 2023

The article deals with the problem of the influence of many factors and conditions on the processes of transformation of management institutions expected in the short term (2020s). The aim of the presented work is to study the influence of cyclic patterns of technical, technological, economic, social and political development of society on the processes of transformation of management institutions. As research methods, the work uses the tools of TESP-analysis of the impact on the transformation of management institutions of short-term business cycles by J. Kitchin, business cycles by K. Zhuglyar, construction cycles by S. Kuznets, technological cycles by N. Kondratiev, formational cycles by M. Evans, political cycles J. Modelsky, F. Braudel’s cycles of material civilization, J. Forrester’s resource cycles and E. Toffler’s cycles-epochs. As a result of the research, the inducing influence of the dynamics of the listed cycles on the processes of transformation of management institutions in society has been established. In particular, the influence of the accumulative effect of accumulation of changes within the short-term business cycles of J. Kitchin, business cycles of K. Zhuglyar, construction cycles of S. Kuznets on the technological cycles of N. Kondratiev and the accompanying processes of transformation of management institutions in society, which are multiples of each other in duration, has been demonstrated. In a similar way, the inducing influence on the processes of transformation of management institutions in a society of approximately equal in duration cycles of material civilization by F. Braudel, formation cycles of M. Evans and political cycles of J. Modelsky is shown. It is shown that from the point of view of the transformation of managerial institutions in society, it is necessary to take into account the influence of the totality of the cycles of economic activity under consideration as a superposition of waves of different duration and amplitude. It has been demonstrated that the cluster of influence of a number of considered waves of economic activity on the activities of management institutions will fall on the 2020s. Proposals are formulated to take into account the influence of the superposition of cycles of economic activity in the transformation of management institutions in modern conditions.
Каменные наконечники стрел aнаньинской культурно-исторической области
Authors: Чижевский Андрей Алексеевич , Галимова Мадина Шакировна
Published: April 2023

Каменные наконечники стрел широко использовались на территории ананьинской культурно-исторической области на протяжении IX–VII вв. до н.э. Многочисленные аналогии в памятниках маклашеевской культуры позволяют предполагать, что основные формы наконечников раннего железного века сложились еще в бронзовом веке. В АКИО использовали, в основном, черешковые наконечники, причем предпочтение отдавалось эллипсовидным формам. Наибольшее количество типов каменных наконечников приходится на постмаклашеевскую культуру, далее следуют вятско-ветлужская культура, ананьинская классическая и акозинская. Мастерами АКИО широко применялась технология производства тонких бифасов – наконечников стрел. В этом процессе использовалась техника сплошного бифасиального утончения заготовок. Эта сложная технология, требующая определенной квалификации и достаточно высокого качества сырья, практиковалась в Волго-Уралье с энеолита. В кругу носителей АКИО наряду с этой сложной многоступенчатой технологией применялась простая техника утончения краевых частей заготовок наконечников.
Археологические микрорайоны ананьинских городищ в Удмуртском Прикамье
Authors: Черных Елизавета Михайловна
Published: April 2023

Исследование особенностей расселения ананьинской КИО выполнено для отдельного участка Нижнего Прикамья (правобережье), с учетом базы ГИС-данных археологических памятников, степени изученности территории, ландшафтной ситуации, в соответствии с теорией потенциальных ресурсных зон вокруг памятников. Обосновывается, что в раннеананьинское время заселение территории осуществлялось вдоль низких участков долины Камы. В середине I тыс. до н.э. количество поселенческих памятников резко увеличивается, меняется их структура и месторасположение в рельефе. Центрами археологических микрорайонов становятся городища. Анализ пространственного размещения поселений внутри микрорайонов позволяет говорить, скорее всего, о разных типах хозяйственных стратегий социальных групп, обусловленных особенностями вмещающего ландшафта и пока не совсем очевидных факторах социального порядка.
Шнуровая керамика и гибридная ананьинского типа поселения Вёкса I на Верхней Сухоне
Authors: Недомолкина Надежда Геннадьевна
Published: April 2023

В работе впервые рассматриваются материалы с гребенчато-шнуровой, шнуровой и гибридной керамикой РЖВ поселений Верхней Сухоны. К середине I тыс. до н.э. эта территория входила в контактную зону между культурно-историческими общностями сетчатой керамики и ананьинской. По традиции комплексы с сетчатой керамикой относили к позднекаргопольской культуре. Гребенчатая и шнуровая керамика рассматривались в рамках сетчатых комплексов. В результате активных археологических исследований в последние десятилетия на территории Верхней Сухоны источниковедческая база по периоду РЖВ существенно пополнилась. Раскопки опорного поселения Вёкса–I позволили выявить всю культурно-хронологическую шкалу древностей Верхней Сухоны, Кубенского озера. Из комплексов сетчатой керамики выделены материалы ананьинского облика и гибридные. Сопоставление керамических комплексов поселения Вёкса–I раннего железного века с керамикой других регионов АКИО позволило наметить пути проникновения носителей традиции ананьинской гребенчато-шнуровой керамики в бассейн Верхней Сухоны. Изменение культурных традиций на поселениях РЖВ региона фиксируются с VI в. до н.э., когда появляются комплексы со смешанной ананьинской и сетчатой традицией изготовления керамики. Продвижение населения связано с юго-восточным направлением с территории Костромского Поволжья. С V века до н.э. в бассейне Верхней Сухоны формируется население, в материальной культуре которого появляется гибридная воротничковая керамика. Процесс расселения групп населения ананьинской культуры гребенчато-шнуровой керамики происходил неоднократно. Более позднее направление связано с бассейном р. Вятки. Гибридные комплексы возможно рассматривать в рамках позднекаргопольской культуры.
Ананьинское поселение на Кремлевском мысу г. Казани
Authors: Чижевский Андрей Алексеевич , Ситдиков Айрат Габитович , Хисяметдинова Асия Абдулкадировна , Сайфутдинова Гузель Маратовна
Published: April 2023

Первые находки раннего железного века на территории Казанского Кремля были сделаны в конце XIX – начале XX вв. Анализ коллекций раскопок конца XX в. позволил определить, что керамика и индивидуальные находки этого времени фиксируются в северо-западной оконечности кремлевского мыса на участке площадью 14487 кв. м. Реконструкция топографической ситуации раннего железного века позволила установить причину заселения этой местности. Северо-западная часть кремлевского мыса в раннем железном веке была разделена лощиной, причем ее восточная сторона имела возвышенную и неровную поверхность, что и предопределило выбор западной оконечности в качестве места размещения поселения АКИО. Керамический комплекс раннего железного века, полученный в результате исследований Казанского Кремля, относится в основном к постмаклашеевской культуре, имеется в его составе и текстильная керамика акозинско-ахмыловской культуры. Анализ керамического комплекса и индивидуальных находок позволил сделать вывод о существовании на месте северо-западной оконечности Казанского Кремля в течение длительного времени IX–IV вв. до н.э. постоянного поселения постмаклашеевской культуры АКИО.
Поселение Гранное Ухо в Ульяновском Поволжье
Authors: Гисматулин Марат Рашитович
Published: April 2023

В статье представлены результаты исследований поселения Гранное Ухо, расположенного на территории Национального парка «Сенгилеевские горы». Памятник был открыт в 2015 г., его изучение было продолжено в 2017 г. Археологические материалы, полученные в результате разведочных работ, позволяют отнести поселение Гранное Ухо к постмаклашеевской культуре ананьинской культурно-исторической области. Керамический комплекс поселения наиболее близок к материалам памятников постмаклашеевской культуры, расположенных в южной части Республики Татарстан и севере Ульяновской области. Памятник, вероятно, датируется второй половиной VI–V вв. до н.э. Поселение Гранное Ухо остается единственным известным поселением постмаклашеевской культуры в Ульяновском Поволжье, что объясняется, прежде всего, слабой изученностью региона.
Три кратких сюжета об орнаментации и производстве ананьинской посуды (по материалам работ 2017 года на Усть-Нечкинском I городище в Среднем Прикамье)
Authors: Митряков Александр Евгеньевич
Published: April 2023

Статья посвящена некоторым особенностям керамического комплекса Усть-Нечкинского I городища в Среднем Прикамье. Дано краткое описание комплекса, выделены характерные особенности ананьинской керамики, которые обычно не берутся в расчёт при формально-статистическом анализе комплексов. Показывается, что три таких особенности – наличие ямок, «воротничок» на части сосудов и небрежный декор на поздней стадии развития, могут рассматриваться как элементы, в большей степени обусловленные технологией изготовления и жизненным циклом посуды, нежели как элементы декора. В связи с этим ставится вопрос о методе учёта признаков и придании им веса при формально-статистическом анализе комплексов и сравнении их между собой. Предполагается, что в результате реконструкции технологического процесса и анализа хозяйственно-культурного контекста ананьинского гончарства, исследователи должны акцентировать внимание на тех характеристиках посуды, которые обусловлены культурными, а не технологическими или хозяйственными различиями древних коллективов.
К вопросу о ранней дате пьяноборских памятников. Ч. 4-2: бронзовые наконечники стрел
Authors: Красноперов Александр Анатольевич
Published: April 2023

Статья продолжает цикл публикаций, обсуждающих основания датировки начала пьяноборской культуры в Прикамье в двух аспектах: во-первых, на чем основаны утверждения о начале культуры в III в. до н.э., во-вторых, насколько привлекаемые находки соответствуют современному состоянию хронологии. Одной из категорий выступают бронзовые наконечники стрел. В первой части работы (Красноперов, 2021) обсуждались находки бронзовых наконечников стрел в позднем контексте в памятниках, прежде всего, степной зоны. Проведенный обзор, даже с учетом неполноты, показал, что обоснования ранних дат памятников с опорой на находки бронзовых наконечников стрел, повторяющиеся в публикациях, недостаточно аргументированы. «Повсеместной смены бронзовых наконечников железными во II в. до н.э.» не произошло. В данной части рассматриваются комплексы (погребения) с бронзовыми наконечниками стрел в ареале пьяноборской культуры. Были проверены пространные списки находок, составленные другими авторами. Из них исключены погребения только с наконечниками и с неопределимыми и неинформативными находками. Остальной сопровождающий материал, регулярно повторяющийся во всей группе погребений, не имеет никаких оснований для датирования. Важными являются два погребения из Старо-Чекмакского и Юлдашевского могильников. Сопровождающий инвентарь Юлдашево, п.16 позволяет сопоставить его с памятниками андреевско-писеральского круга, что не дает возможности датировать набор ранее I (возможно 2 пол.) – нач. (возможно 1 четв.) II в. н.э. В данном случае это показывает, что бронзовые наконечники стрел продолжают бытовать и после рубежа эр. Из-за того, что наконечники перестали использовать в «сарматском» погребальном обряде мы не знаем даты окончания бытования типа. Имеющиеся факты, их не единичность, показывают, что бронзовые наконечники не являются принципиальным датирующим инвентарем. Простой факт находки бронзовых наконечников в комплексе – недостаточное основание для обязательно ранней датировки комплекса или памятника. Однако эта категория находок продолжает сохранять потенциал для определения ранней даты пьяноборской культуры.
Костяные орудия первичного цикла работы с шерстью в комплексах позднего бронзового века
Authors: Усачук Анатолий Николаевич , Горошников Андрей Алексеевич , Мимоход Роман Алексеевич
Published: April 2023

В 2022 г. во время продолжающихся раскопок поселения позднего бронзового века Панагия 1 в юго-западной части Таманского п-ва среди большого количества различных костяных изделий были выделены при трасологическом изучении три орудия первичного цикла работы с шерстью: ламель (стригальная полочка), применяемая как пластина-упор для срезания металлическим лезвием шерсти овцы во время стрижки, и остатки зубьев гребней-кард для расчесывания овечьей шерсти, удаления из нее спутанных участков, грязи и мусора. На основе привлечения большого круга аналогий авторы исследуют историографию вопроса, разбирают ошибки, допущенные в процессе изучения, а на основе трасологического анализа – взвешивают все «за» и «против» в процессе реконструкции способов изготовления и использования этих категорий костяных орудий. Попутно поднимается вопрос о наличии в погребениях эпохи бронзы разных типов гребней. Предлагаются и обосновываются изменения в названиях орудий и их частей, затрагиваются вопросы ритуального использования орудий.
Материалы эпохи палеометалла Кузькинской VII стоянки
Authors: Шипилов Антон Валентинович
Published: April 2023

Кузькинская VII cтоянка расположена в Алексеевском районе Республики Татарстан, в 5, 5 км к юго-западу от бывшего села Кузькино и в 10,5 км к югу от с. Шуран Рыбнослободского района РТ. В результате проведённых археологических изысканий на памятнике был получен богатый и выразительный массив археологических источников, имеющий принадлежность к эпохе палеометалла. В данном массиве артефактов присутствует несколько культурно-хронологических групп находок, которые характеризуют несколько этапов функционирования рассматриваемой стоянки. Наиболее ранний этап функционирования стоянки связан со срубной КИО. В коллекции присутствуют комплексы, имеющие принадлежность к луговской, а также маклашеевской культурам. Позднейшая история Кузькинской VII стоянки связана с ананьинской культурно-исторической областью.
Perception and attitude of emergency department and primary care physicians towards subarachnoid hemorrhage in Al-Hasa, Saudi Arabia: a cross-sectional study
Authors: Almalki Sami , Aleid Abdulsalam , Almousa Abdulelah , Alwadany Muhannad , Alabbad Hasan , Alkhalifah Sajjad
Published: April 2023

Objective: This study examined the perception and attitude of emergency department (ED) and primary care physicians (PCPs) toward subarachnoid hemorrhage (SAH) in Al-Hasa, Saudi Arabia, and identified challenges in its management.
Methods: A cross-sectional research design was employed in this study. A self-administered structured questionnaire with 17 validated questions was distributed electronically via email and social media to 103 eligible ED and PCPs residing in Al-Ahsa city, Saudi Arabia. The sample represented physicians from different settings.
Results: Results showed physicians had moderate SAH knowledge, with age being the most important in determining patient prognosis. Limited access to specialized care and trained staff were the biggest management challenges. Additional staff training and increased specialized care access were suggested to improve SAH management.
Conclusion: SAH is a potentially life-threatening condition requiring immediate attention. ED and PCPs play a crucial SAH management role, so understanding their perception and attitude is important. Providing extra staff training and specialized care access might improve SAH management.
Some common fixed point theorems of p- contraction and (α, β) composition contraction in Generalized Banach space
Authors: Wesam Nafia khuen  , Alia Shani Hassan
Published: April 2023

In this work, we introduce Some common fixed point theorems of  contraction and (α, ) composition contraction in Generalized Banach space. The provided theorem is a generalization and extension of many well-known theorems.
Philo and Numenius in the Neoplatonist-Christian struggle for true philosophy in the third century
Authors: Soloviev Roman Sergeevich
Published: April 2023

The article deals with the problem of interschool interaction between Platonists and Christians in the third century on the example of the figure of Amelius Gentilianus. Amelius' openness to the tradition external to Platonism finds precedent in the second century with Numenius, who was familiar with Christian scripture and included biblical quotations and information from the Apocrypha in his writings. Numenius himself was familiar with the Jewish tradition, also thanks to the texts of Philo of Alexandria, whose convergences the author analyses specifically in the text of the article. Philo of Alexandria, in turn, influenced the Christian tradition, not only through his allegorical method, but also through his teaching of Logos (Justin), which Numenius and Justin the Philosopher have in common. The figure of the Christian Ammonius, a pupil of Numenius, is a key figure in third-century philosophy: his pupils Origen, Longinus and Plotinus developed the doctrine of Logos. The lineage of the Philo-Numenian tradition proved productive of both Christian and Platonic philosophical schools, which not only created a common philosophical foundation, but also defined each school's claim to philosophical renewal.
Informal Self-Employment in the Market of Tutoring Services: International Experience of State Regulation
Authors: Donetskaya S. S. , Tretyakova V. A.
Published: April 2023

Private tutoring is currently an international phenomenon and, as research in this field demonstrates, has a pronounced upward trend in many countries around the world. At the same time, the issues of functioning and development of the tutoring services market remain insufficiently covered due to the lack of reliable information on tutoring services, imperfect legislative framework in this area, as well as due to the complex changes in the educational system and in the socio-economic life of society in general, to which the analyzed market is extremely susceptible. Therefore, the purpose of the article is to reveal the features of approaches and methods used in the international practice of regulating the tutoring services market.

The article reveals that tutoring services market in any country, despite the sufficient openness to new participants, operates under certain restrictions: natural and unnatural barriers. The former is conditioned by the peculiarities of natural development and scale of the market; the latter are created through administrative control of tutoring activities. The classification of barriers is given, which makes it possible to single out state regulation of self-employment in the tutoring services market into a separate category. The types of state policy of different countries in relation to tutoring activities are presented. It is revealed that the current system of state regulation of the tutoring services market in Russia is characterized by a focus on tax control without considering the social significance of the nature of tutoring services and its impact on the state education system. In this regard, it is necessary to analyze international experience, especially about the possibility of implementing the most successful solutions of state regulation of the tutoring services market in relation to Russian conditions.
Coil embolization for post-bypass aneurysm of middle meningeal artery for moyamoya disease – preservation of transdural anastomosis
Authors: Maruyama Kunitaka , Kashiwazaki Daina , Yamamoto Shusuke , Akioka Naoki , Hori Emiko , Kuroda Satoshi
Published: April 2023

Background:

Middle meningeal artery (MMA) pseudoaneurysm following revascularization surgery for moyamoya disease (MMD) is rare.

Case Description:

Here, a 29-year-old man presented with an MMA pseudoaneurysm after he underwent revascularization surgery (superficial temporal artery-to-middle cerebral artery bypass and encephalo-duro-myoarterio-pericranial synangiosis) for hemorrhagic MMD. At 3 months post-surgery, digital subtraction angiography showed a pseudoaneurysm in the right MMA. Transdural anastomosis to the parietal and occipital lobes was opacified at the distal MMA of the pseudoaneurysm. Intra-aneurysmal coil embolization was performed for preservation of transdural anastomosis. The postoperative course was uneventful. At 1 month post-embolization, angiography revealed an entirely occluded pseudoaneurysm.

Conclusion:

An increase in blood flow in the MMA due to bypass surgery may accelerate aneurysm development by increasing the hemodynamic stress. This case suggested that intra-aneurysmal embolization may be a potential treatment.
A combined, supraclavicular, infraclavicular, transaxillary, and posterior subscapular approaches for en bloc resection of giant myxofibrosarcoma
Authors: Bethel Jacob A. , McCarthy Daniel P. , Weisman Paul S. , Glazer Tiffany A. , Hanna Amgad S.
Published: April 2023

Background:

Myxofibrosarcoma (MFS) is a rare and locally infiltrative tumor that commonly occurs in extremities in older adults; however, truncal and head and neck cases have been reported. They are characterized by multinodular growth, incomplete fibrous septa, and myxoid stroma. Surgical resection is the mainstay of treatment.

Case Description:

The authors report a case of a combined, supraclavicular, infraclavicular, transaxillary, and posterior subscapular approaches for resection of giant MFS.

Conclusion:

The anatomical complexity and rarity of tumors involving the brachial plexus impose many challenges onto surgeons performing surgical resections. Treatment choices and surgical outcomes rely heavily on meticulous multidisciplinary planning, anatomical knowledge, careful dissection, and extent of resection. This case is unique in utilizing four different approaches to the brachial plexus to resect one tumor.
A Theoretical Search for Terminal Carbides and d-Block–p-Block Quadruple Bonds
Authors: Ghosh Abhik , Conradie Jeanet
Published: April 2023

Exploratory scalar-relativistic DFT calculations (B3LYP*-D3/ZORA-STO-TZ2P) have been used to examine the stability and bonding of pseudotetrahedral Group 8 (Fe, Ru, Os) and Group 9 (Co, Rh, Ir) terminal carbide complexes with tripodal tris(N-heterocyclic-carbene) supporting ligands. The complexes examined are all charge-neutral, with d4 ground states. The complexes exhibit relatively low adiabatic ionization potentials in the 4.3-5.9 eV range and sizable adiabatic singlet-triplet gaps in the 0.9-1.6 eV range. Furthermore, all the complexes exhibit near-zero or strongly negative electron affinities, indicating high reductive stability. These calculated results suggest that, once successfully synthesized, the majority of the complexes examined should be isolable and moderately stable. As far as bonding in the metal-carbido moiety is concerned, NBO analyses suggest a triple bond, with a 2s-like lone pair on the carbido carbon.
Penilaian Keberlanjutan Padi Pada Tingkat Lahan Pertanian/Field Level Menggunakan Fuzzy Analytical Hierarchy Process (Fuzzy-Ahp
Authors: Maukar Anastasia Lidya , Runtuk Johan
Published: April 2023

Perkembangan berkelanjutan di bidang pertanian diperlukan untuk menjaga kelangsungan dari aspek ekonomi, sosial dan lingkungan. International Rice Research Institute memiliki tujuan terkait, seperti meningkatkan kesehatan dengan meningkatkan nutrisi dan keamanan beras dan membuat sistem beras yang ramah lingkungan. Sejalan dengan itu, ada tujuan pembangunan berkelanjutan oleh PBB terkait yang menghilangkan dan mengakhiri kelaparan di mana-mana, menerapkan ketahanan pangan dan meningkatkan gizi serta mempromosikan pertanian berkelanjutan. Oleh karena itu, pertanian keberlanjutan perlu dipertimbangkan sebagai tindakan untuk mewujudkan tujuan tersebut. Penelitian ini bertujuan untuk mengidentifikasi kriteria, sub kriteria dan indikator penilaian serta untuk melakukan penilaian terhadap pertanian padi berkelanjutan di dua desa di Karawang, yaitu Parungsari dan Pasirjengkol. Penilaian terdiri dari kriteria, sub kriteria dan indikator. Bobot kriteria dan sub kriteria juga diperoleh dari pakar dan dihitung dengan menggunakan metode Fuzzy-Analytical Hierarchy Process (Fuzzy-AHP). Kemudian, rubrik ditentukan dan penilaian dilakukan dan dibandingkan dengan standar. Hasilnya, kedua wilayah tersebut memiliki indikator skor rendah. Hasil skor penilaian kriteria ekonomi, sosial dan lingkungan Parungsari adalah 1,679; 2.615; dan 3.495. Hasil skor penilaian kriteria ekonomi, sosial dan lingkungan Pasirjengkol adalah 1,745; 2.588; dan 3.189. Rekomendasi perbaikan juga diberikan untuk setiap indikator skor rendah.
Minimasi Unsafe Action Pada Proyek Pembangunan Mass Rapid Transit (MRT) Phase II Menggunakan Metode Hazard Identification, Risk Assessment, and Risk Control (HIRARC)
Authors: Nurieta Aulia Putri , Safitri Dian Mardi , Utami Ika Wahyu
Published: April 2023

Sumitomo Mitsui Construction Company Utama Indonesia adalah salah satu perusahaan konstruksi terkemuka di Indonesia dan merupakan anak perusahaan dari Sumitomo Mitsui Construction Co., Ltd yang berpusat di Jepang. Mass Rapid Transit (MRT) adalah moda berbasis rel perkotaan transportasi pelayanan publik. Penelitian ini dilakukan pada proyek pembangunan Mass Rapid Transit (MRT) phase II Jakarta di area Glodok - Kota. Berdasarkan pengamatan dan wawancara, terdapat kecelakaan kerja yang diakibatkan oleh unsafe action yang perlu diidentifikasi lebih lanjut. Tujuan penelitian ini adalah untuk melakukan pengendalian dari indikator unsafe action yang dapat menyebabkan kecelakaan kerja. Metode yang digunakan dalam penelitian ini menggunakan Hazard Identification, Risk Assessment, and Risk Control (HIRARC). Penelitian inI dilakukan dalam beberapa tahap, yaitu mengidentifikasi hazard dari indikator unsafe action, melakukan penilaian risiko indikator unsafe action, dan menentukan pengendalian risiko. Hasil yang didapatkan berdasarkan penilaian risiko, dari 13 risiko tersebut terdapat 9 jenis risiko kategori rendah (low risk), 3 jenis risiko kategori sedang (medium risk), dan 1 risiko kategori tinggi (high risk). Pengendalian risiko yang dapat diberikan dan telah disetujui perusahaan yaitu pemasangan rambu "awas material jatuh", memberikan eksternal training seperti Pelatihan K3 Tenaga Kerja Bangunan Tinggi Bidang Pesawat Angkat dan Angkut, melakukan pengawasan di area kerja dengan menambah jumlah personil pengawas yang melibatkan supervisi dan site engineer.