bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Intelligent Recognition Method of Egg cracks Based on EfficientNet Network Model
Authors: Liu Chao , Wen Hongyuan , Yin Gang , Ling Xiaoxiong , Ibrahim Shaikh Mohammed
Published: August 2023

Aiming at the egg crack detection task, a 6-position egg image acquisition method is proposed. EfficientNet was used to classify egg cracks. Using transfer learning technology, the model is pre-trained with CIFAR-10 data set to obtain initial weights. The efficiency of model training is improved. Compared with the current mainstream CNN models of Alexnet, VGG16 and ResNet50, in terms of egg crack recognition, the average correct recognition rate of EfficientNet model is as high as 98.6 %, which is significantly better than Alexnet, VGG16 and ResNet50 models. Among them, the correct recognition rate of EfficientNetB2 model is 99.5 %, the training time is only 29 min, and the comprehensive performance is the best. It is the most suitable method for egg crack detection. Finally, three learning rates are set for the EfficientNetB2 model. The experimental results show that the model has the best performance when the learning rate is 0.001. The improved model proposed in this paper improves the accuracy of egg crack detection and reduces the model training time.
Large-field Gesture Tracking and Recognition for Augmented Reality Interaction
Authors: Zhao Ruiyi , Ge Yangshi , Duan Ye , Jiang Quanhong
Published: August 2023

In recent years, with the continuous development of computer vision and artificial intelligence technology, gesture recognition is widely used in many fields, such as virtual reality, augmented reality and so on. However, the traditional binocular camera architecture is limited by its limited field of view Angle and depth perception range. Fisheye camera is gradually applied in gesture recognition field because of its advantage of larger field of view Angle. Fisheye cameras offer a wider field of vision than previous binocular cameras, allowing for a greater range of gesture recognition. This gives fisheye cameras a distinct advantage in situations that require a wide field of view. However, because the imaging mode of fisheye camera is different from traditional camera, the image of fisheye camera has a certain degree of distortion, which makes the calculation of gesture recognition more complicated. Our goal is to design a distortion correction processing strategy suitable for fisheye cameras in order to extend the range of gesture recognition and achieve large field of view gesture recognition. Combined with binocular technology, we can use the acquired hand depth information to enrich the means of interaction. By taking advantage of the large viewing Angle of the fisheye camera to expand the range of gesture recognition, make it more extensive and accurate. This will help improve the real-time and precision of gesture recognition, which has important implications for artificial intelligence, virtual reality and augmented reality.
Layout Optimization and Multi-scenes Intelligent Inspection Scheme Design Based on Substation Video Monitoring
Authors: Li Xinzhuo , Zhang Junjie , Zhang Li , Chen Xuejin
Published: August 2023

In order to realize intelligent inspection of substation and improve inspection efficiency. This paper aims at the problems of irregular distribution, low reuse, low coverage of inspection points and waste of investment in the current substation video monitoring system. Propose a set of efficient distribution principles and methods. In view of the lack of scenario consideration in the preparation of substation inspection tasks, which leads to the lack of flexibility and poor practicability of inspection work. It is proposed to carry out multi scene inspection work according to the trigger conditions of different scenes. Through comprehensive collection of inspection data, combined with artificial intelligence algorithm, the overall perception of equipment operation status is realized. Taking a 220kV substation as an example, the scene based compilation and application based on the distribution of video monitoring system in the substation and in combination with inspection tasks. The intelligent inspection of the substation is realized to the greatest extent, which provides a certain idea for the subsequent large-scale promotion, construction and application of intelligent inspection of the substation.
Simulation Analysis of DC Cable Terminal under Polarity Reversal Voltage
Authors: Shen Yubo , Lv Tong , Yang Shijie , Zhang Jian , Wang Lei , Zhou Hongyi , Zhou Meng , Li Zhibin , Han Siwei , Wang Jinsheng
Published: August 2023

High voltage direct current transmission has the advantages of high transmission capacity, low loss, no simultaneous operation of the AC system on both sides, and small loss on the power grid in case of failure. The stability of synchronous operation does not limit its transmission capacity and distance, while avoiding the effects caused by low frequency oscillations. And, in the event of a blackout, it won’t cause massive power outages either, reducing losses. The DC transmission system may withstand both normal working DC high voltage and polarity reversal voltage, so it is extremely necessary to conduct theoretical analysis of the DC cable terminal under polarity reversal voltage. This article simulates the distribution of the electric field at the reverse polarity voltage of a DC cable terminal and analyzes its law of variation. The results show that when the conductivity of the main insulation to the reinforced insulation is equal to its dielectric permittivity ratio, the build-up of space charges can be effectively inhibited and guide relevant studies.
DCMigrationALG: A Power-Aware Data Center Container Migration Algorithm
Authors: Zou Haodong , Feng Jia , Tang Ming , Wu Yu
Published: August 2023

In order to make full use of the power capacity of the data center when deploying servers in the data center, the deployment method of data center power over-provisioning is adopted. By using the hypothetical power capacity of the data center instead of the actual power capacity to deploy servers, we can deploy more servers to improve power utilization and space utilization. However, in some cases, when the servers under the same power supply component reach a higher power level at the same time, the real-time power of the power supply component will exceed the rated power, affecting service operation and causing heavy losses. In response to the above problems, we propose DCMigrationALG: a power-aware data center container migration algorithm. This algorithm uses container migration to migrate the containers under the power supply component to other power supply components, thereby reducing the real-time power of the power supply component and ensuring power security. We conduct experiments in a real computer room environment to prove the effectiveness of our algorithm.
Embedded Device Energy Consumption Prediction System based on Machine Learning Optimization
Authors: Zhang Lingxue
Published: August 2023

Accurately predicting the energy consumption of embedded devices has important implications for improving system performance and stability, resolving energy consumption anomalies and faults, and developing energy management strategies. In addition, it can promote the rational use of energy, reduce carbon emissions and environmental pollution, and achieve sustainable development. This article establishes an energy consumption prediction model for embedded devices using machine learning algorithms, and adopts a physical verification system to verify the accuracy of the prediction model for embedded devices. Firstly, divide the input and output samples obtained from CFD(Computational Fluid Dynamics, CFD) into training and testing sets, and use the SVM(Support Vector Machines, SVM) algorithm to train the training set to obtain an energy consumption prediction model. Then, the testing set is simulated and validated using the model. Finally, a related embedded hardware circuit system is designed to collect temperature, humidity, air conditioner voltage, and current data using sensor modules, and the energy consumption prediction model is validated using physical verification. The results showed that the relative error percentage between the energy consumption prediction model obtained through SVM and the simulation results was small. The percentage error between the actual energy consumption value and the predicted energy consumption value was also relatively small, verifying the feasibility of the research in this article.
Distributed Human Pose Estimation Based on BlazePose
Authors: Ming Tiancheng , Huan Guangjun , Yan Lixia , Lorenzini Guilo
Published: August 2023

The lightweight of human pose estimation model is one current research hotspot in the field of computer vision. The emphasis of current research is to promise lightweight model while improving the network performance. In view of computing and processing performance of monocular static image pose estimation method deployed in mobile devices, a distributed human pose estimation method was proposed. The distributed framework was constructed by simplifying BlazePose as the core, and the 5×5 convolution kernels were run for feature downsampling in a multi-thread simulated distributed environment. The computing power output of mobile devices was reduced by distributed simulation. Experimental results showed that the proposed model had 3%~11% performance improvement compared with other models in the simulation environment. Compared with the traditional human pose estimation model, the proposed model reconstructs the neural network deployment framework, thus indirectly enabling stable recognition of the deployed equipment under low computing power.
Driver Distracted Behavior Detection Using a Light Weight Model based on the W-MSA
Authors: Lyu Aihong
Published: August 2023

The percentage of traffic accidents caused by driver factors is about 90% in the world. Despite the great development of autonomous driving, it is still not completely self-driving. So, it is still not possible to avoid traffic accidents caused by drivers. Computer vision technology has made great progress with deep learning development. That makes it possible to detect the driver’s behaviour using a camera. To reduce the detection price, this paper presents a light weight model to detect the driver’s behavior based on the W-MSA. This model consists of 2 encoder modules and a classification module. And it used the Global Avgpool and W-MSA to reduce the model parameter and FLOPs. To avoid the low accuracy of the detection, this paper also used label smoothing regularization and CBAM technologies to improve the accuracy. This paper also used a visualization method to show the interpretability of the proposed model. The results show that the accuracy of the proposed model is 98% on the Kaggle driving test dataset. Compared to other state-of-the-art models, our method has a high accuracy with fewer model parameters.
Single-phase broken-line fault of a 10 kV ungrounded distribution Line
Authors: Shao Wenzheng , Liu Wenbin , Yang Jiakui , Zang Jiayi
Published: August 2023

In recent years, a great many applications of overhead insulated lines in distribution networks have reduced the occurrence of single-phase ground faults, and at the same time made broken-line faults a problem that cannot be ignored. Timely fault detection and fault location are of great help to reduce power outages and improve the quality of power supply for users. Aiming at the ungrounded system, this article designs a single-phase broken-line model, considers the influence of abort situation and others, analyses the fault characteristics such as sequence current and neutral point offset voltage, and then advances a fault model according to negative sequence current and neutral point offset voltage fault detection method. Lastly, the validity of the suggested way is confirmed by MTALAB.
Design of polarization direction detection circuit
Authors: Yang Zhiyong , Li Shun , Cai Wei , Luo Lina , Chen Dong
Published: August 2023

In the polarized light angle measurement system, it is important to detect the polarization direction of linearly polarized light. First, the principle of polarized light angle measurement is introduced, and then the polarization direction detection circuit is designed. This circuit receives the light intensity output signal from the Polarization State Analysis and converts it to an electrical signal. The electrical signal is filtered, amplified, sampled, and integrated to obtain a stable and useful electrical signal waveform. The polarization direction is judged by the waveform, which plays a role in the field of polarized light angle measurement and realizes accurate angle measurement. The simulation results show that the circuit can detect weak light signals and achieve 71.45 dB–97.95 dB adjustable gain. A stable and clear signal waveform can be obtained. The polarization direction can be determined by using the waveform. The circuit has a simple structure, good stability, and easy realization.
A Novel Co-phase Traction Power Supply System in Electrified Railway
Authors: Cui Guiping , Jia Lei , Qu Xing
Published: August 2023

The electrified railway has power quality problems such as three phases seriously unbalanced, large harmonics, and reactive power. In addition, the neutral section exists at each power supply section, which restricts the development of the high-speed and heavy-haul railway. This paper proposes a novel co-phase traction power supply system (TPSS) based on a YNvd balanced transformer, which can not only solve the above problems but also save one single-phase coupling step-down transformer, thus reducing the cost and space of the whole system. In addition, the voltage level of the converter switching device can be reduced by the rational design of the transformer tap position, which enhances the reliability and feasibility of the system. The compensation principle and control strategy of the co-phase TPSS based on the novel YNvd balanced transformer are analyzed in detail in this paper, and the compensation current detection and integrated power flow controller (IPFC) control methods are given. Simulation and analysis show that the proposed topology structure and control method are correct and feasible.
Modeling Calculation and Influencing Factors of Geomagnetically Induced Current in Sanhua Power Grid
Authors: Chen Zan-ming , Liu Chun-ming , Li An-qi , Yan Yue
Published: August 2023

The time-varying magnetic field of a magnetic storm induces an electric field in the earth, which generates geomagnetically induced currents (GIC) when it acts on the power grid and has many hazards to the power system. In this paper, we model and calculate the ground-induced electric field and geomagnetically induced currents for 20 magnetic storms from 2008 to 2018, and investigate the effects of two factors, magnetic storm strength, and earth conductivity, on the geomagnetically induced currents, which are important for the prevention and control of GIC in large-scale power grids in low- and mid-latitude regions.
Analysis and Evaluation of Bearing Capacity of Distributed Photovoltaic Connected to Hunan Power Grid
Authors: Wang Ding , Xu Ming , Cao Wei , Hao Luxi , Chen Lingyi , Ning Zhihao
Published: August 2023

The development of distributed power in Hunan Province is mainly photovoltaic, with an average annual growth rate of 16.4% in the past five years. By the end of October 2022, Hunan’s distributed photovoltaic installed capacity is 3.06 million kilowatts, accounting for 54.6% of the total photovoltaic installed capacity, which exceeds the centralized photovoltaic installed capacity. Due to the rapid large-scale development of distributed photovoltaics, it is common that the actual operation scale exceeds the contemporaneous planning. In addition, Hunan distributed photovoltaic access is concentrated in northern and southern Hunan, while in southern Hunan, due to a large number of local clean energy, a large number of distributed photovoltaic access will increase the output of terminal power supply, which can seriously cause the grid power flow to reverse. This paper takes the power grid topology in southern Hunan as an example of carrying out the bearing capacity assessment of regional distributed photovoltaic access to the power grid. This method guides the rational layout of distributed photovoltaics and stably ensures the operation of the Hunan power grid.
Software and hardware design of microcomputer relay protection device based on DSP
Authors: Huo Jingchong , Meng Runquan , Li Shengwen , Liu Qiang
Published: August 2023

The research on fault protection technology of AC power grid in AC/DC hybrid microgrid is very mature, while the research on fault protection technology of DC microgrid is still in the development stage. Therefore, the research and development of necessary power electronics and protection devices have become a research hotspot in recent years. In this paper, a microcomputer protection device based on the TMS320F28335 chip is developed. Considering the anti-interference of field use, detailed hardware and software design is carried out. The debugging effect is good, and the low-voltage DC short-circuit fault protection function can be reliably realized.
Gas Production Characteristics of UHV Oil immersed Shunt Reactor with Vibration Defects
Authors: Gu Zhaoliang , Zhu Wenbing , Zhu Mengzhao , Li Longlong , Zhu Qingdong , Wang Jian , Wang Haozhe
Published: August 2023

The special multi-air gap structure of Ultra high voltage (UHV) oil-immersed shunt reactor determines that its magnetic leakage is far greater than that of a power transformer of the same voltage level, and it is more prone to vibration and other problems. Overheating and suspended discharge caused by vibration are important sources of excessive gas production in UHV shunt reactors. In this paper, the source of gas production under reactor vibration is analyzed, and a reactor defect simulation gas production platform is built. Using oil chromatography analysis, partial discharge detection, and other means, the gas production characteristics, discharge characteristics and insulation degradation characteristics of typical defects such as suspended discharge and partial overheating under vibration have been experimentally studied. Then, the correlation analysis model between the vibration type, intensity, overheating degree, and the reactor performance change was established. Finally, the gas production and discharge characteristics of the reactor under different defect types were obtained. Besides, gas production characteristics under vibration with 50 Hz, 100 Hz, and 150 Hz were carried out, and it was found that the gas will continue to increase with the increase of vibration frequency, and the growth has been stabilized after exceeding 100 Hz. The relevant research results of this paper can provide technical support for the application of UHV oil-immersed shunt reactor state assessment and diagnosis, and improve the level of equipment operation and maintenance.
Multi-load short-term prediction of an integrated energy system based on GAN-LSTM
Authors: Su Junni , Chen Fengchao , Qiu Zejian , Zhong Zhiming , Zheng Huifang , Zheng Hua
Published: August 2023

An integrated energy system’s load consists of diverse forms, including electric load, cooling load, heat load, and more. Due to its strong randomness and volatility, traditional load forecasting methods are not suitable for the integrated energy system. To address the issue of short-term forecasting for multiple loads of the integrated energy system, the proposed paper utilizes generating adversarial networks (GAN). The proposed method analyzes the characteristics of comprehensive energy multi-load and combines meteorological factors with multi-load historical data to form the input dataset for the prediction model. To further improve the accuracy of the short-term forecasting of comprehensive energy multiple loads, the model employs a generator and a discriminator constructed based on the cyclic neural network of long- and short-term memory (LSTM). The example results demonstrate that the proposed method is effective in predicting multiple loads, with significantly better accuracy than traditional methods.
Equivalence analysis of acoustic excitation and random vibration exerted on spacecraft units
Authors: Zhang Jie , Wang Yakun , Wu Pengfei
Published: August 2023

At the unit level test, the small area-to-mass ratio unit of spacecraft generally adopts the random vibration test to simulate the acoustic environment during the launch event. Acoustic excitation and random vibration exerted on spacecraft units reflect different dynamic characteristics. Thus, the equivalence analysis between them deserves to be conducted. In this work, a thruster outside the spacecraft was taken as an example, for it directly experiences acoustic load compared with the electronic equipment inside. The vibroacoustic and random vibration models of the thruster were established, and response behavior was explored. Results show that there are differences in the response distribution rules of acoustic load and random vibration on the thruster. The farther to the thruster root is, the harder acoustic vibration responses can be covered by the random response, so an appropriate safety margin shall be reserved when formulating random vibration conditions of units.
A Novel Testing Method for the Radiometric Responsivity of Satellite Cameras
Authors: Yang Hongming , Chen Feng , Nan Qian
Published: August 2023

To solve the problems of harsh test conditions and the complex process of visible imaging satellite cameras, a testing method suitable for conducting at the launch site was proposed to address the limitations of the original test design. The method is highly efficient and accurate enough in evaluating the radiometric responsivity of satellite cameras, with the advantages of fully controllable test conditions, convenience, and high accuracy. Using a certain type of optical satellite as an example, the proposed method is used to test the radiometric responsivity of satellite cameras and compare the results with those obtained by the traditional integrating sphere testing method to verify the validity and reliability of the testing method.
Multifunctional Aviation Warning Ball with Four Split Conductors
Authors: Zhou Anqi
Published: August 2023

In this paper, the application scenario of the existing single-conductor installation aviation warning ball does not meet the needs of two major research backgrounds, the development of the aviation industry and the transmission wire anti-dance in the electrical system. The four-division aviation warning ball can meet more application scenarios. The design of the aviation warning ball adopts the design idea of combining a spacer bar, anti-dance device, night light device, and ball shell as the whole product to realize the functional integration of night warning and anti-dance function. This paper focuses on the connection mode of the designed new aviation warning ball. It verifies the strength of the key bearing parts in the structure to ensure the feasibility of the design structure.
Analysis of Aerodynamic Characteristics of Different Tail Configurations of Compound High-speed Helicopters
Authors: Yu Hao , Li Jingyang , Baoyin Hexi
Published: August 2023

When a compound high-speed helicopter is in forward flight, there are serious aerodynamic disturbances among the fuselage components, among which the tail configuration has a greater influence on its aerodynamic performance. To study the influence of different tail configurations on aerodynamic performance, the flow field of a compound high-speed helicopter in forward flight was numerically simulated based on the commercial software XFlow. Firstly, the ROBIN standard helicopter fuselage model was calculated to verify the scientific validity of the method. Then, the aerodynamic data of a high-speed helicopter was analyzed for different tail configurations in forward flight with different angles of attack and yaw. The results show that the V-tail configuration has the lowest lift and resistance coefficients and the best longitudinal manoeuvrability and stall characteristics; the conventional tail configuration has the highest lift-to-resistance ratio and the fastest wake decay; the lateral stability of the V-tail and conventional tail configurations is weaker than that of the H-tail and fixed tail configurations; and the presence of the vertical tail in the tail increases the pressure value around the wing surface.
Modeling and Simulation Evaluation of Seaplane Porpoising
Authors: Liu Jing , Tian Fuli
Published: August 2023

During the take-off of the seaplane on the water surface, one of the most dangerous situations is the uncontrollable porpoising of the seaplane. The coupling effect of the buoyancy, hydrodynamic resistance, hydrodynamic lift, and aerodynamic force of the seaplane is studied to better meet the requirements for porpoising in airworthiness clauses. In this study, we established the dynamics model of seaplane motions on the water surface and proposed a method for the simulation evaluation of seaplane porpoising. The program for simulating seaplane planning on the water surface was developed. Through simulation, we evaluated the possibility of porpoising when a seaplane plane is on the water surface and obtained the pitch attitude boundary of seaplane porpoising. The evaluation method can be adopted to develop procedures for seaplane take-off control and for risk identification and control in seaplane take-off test flights on the water surface.
Spare parts scheme for electronic equipment system with limited resources
Authors: Liu Shuren , Shen Bo , Li Wenzhao , Yin Zimeng , Liu Qingqi
Published: August 2023

With the increase of the number of modern equipment, the expansion of equipment scale, and the requirements of actual combat equipment for long-term standby duty, the role and significance of spare parts support scheme in the life cycle of equipment system gradually become prominent. Taking the electronic equipment system as the research object, this paper analyzes the relative changes between the spare utilization rate and the spare fill rate under different system composition scales. It introduces the strategy of using faulty parts as spare parts after maintenance under the condition of considering limited spare parts resources. It analyzes the spare parts scheme of electronic equipment systems under the premise of satisfying the constraints of spare parts resources.
An optimized milling force prediction method for multi-axis ball-end finish milling
Authors: Li Wangfei , Ren Junxue , Lu Yanru , Shi Kaining , Zhou Jinhua , Zhang Jingquan
Published: August 2023

By accurately predicting milling force in finish milling, simulation of the milling process can be effectively conducted, followed by the provision of effective recommendations on optimization of machining process parameters. The prediction of ball-end milling force poses a significant challenge due to the influence of the cutter workpiece engagement (CWE) calculation and cutting force coefficient identification. This paper proposes a precise approach for predicting milling force, which involves an improved calculation method of CWE and an optimized identification approach for cutting force coefficients based on a mechanistic model. In the calculation of CWE, an optimization method considering the dynamic change of undeformed slice thickness and CWE boundary calculation is proposed. Furthermore, an improved approach incorporating interference signal removal and multiple nonlinear regression fitting methods is utilized for cutting force coefficient identification. Subsequently, the resulting prediction is validated through comparison with measurements and demonstrates a prediction accuracy exceeding 94%. The conclusion drawn is that the proposed prediction method for multi-axis ball-end finish milling force exhibits high accuracy in its predictions.
Numerical Research for Hypersonic 3D Flow with High-Temperature Effect and Catalytic Conditions
Authors: Pan Sha , Sheng An , Liu Yunxia , Wan Lv , Xi Wenxiong
Published: August 2023

Investigating the high-temperature effect and catalytic condition with hypersonic flow numerical research was conducted by CFD methods. For comparison, flows were calculated by using a high-temperature nonequilibrium gas model and a calorically perfect gas model. All findings showed that high temperatures alter the flow properties considerably. The flow field structure, temperature distribution, pressure distribution, etc. were different from the calorically perfect gas assumption flow. All these differences would affect the aerodynamical force and aero heat of the fly vehicles with hypervelocity. Furthermore, all conditions of non-catalytic and catalytic effects were computed and compared. The flow with catalytic conditions produces more aero heats due to an exothermic recombination reaction near the wall. The methods and computations could be used for further engineering applications and hypersonic aerodynamical research.
Flap/slat control lever signal algorithm based on potentiometer for civil aircraft
Authors: Cao Junzhang , Cao Yawen
Published: August 2023

A design of flap/slat control lever signal calculation based on a potentiometer for civil aircraft is proposed. The design applies to the dual redundancy FSECU (Flaps Slat Electronic Control Unit) architecture. A range monitoring algorithm is first proposed to confirm the validity of the FSCL (Flap/Slat Control Lever). The value of a single potentiometer is used for one-channel FSCL detent calculation. To solve the difference in FSCL signals among channels, an algorithm for FSCL signal monitoring and voting is proposed. The core of this algorithm is presented by logical description and the flow diagram. The design is verified by modeling and simulation in the Simulink environment. The results are in line with expectations, which can provide a reference for the design of the FSCL signal algorithm.
Thermal-mechanical fatigue life prediction considering fatigue-creep interaction effects
Authors: Yin Xiang , Shang De-Guang , Zhang Gang , Li Dao-Hang , Zhang Hang , Qian Cheng , Zhou Shuai , Hao Guo-Cheng
Published: August 2023

This study proposed a multiaxial variable temperature and amplitude damage assessment model to predict the variable temperature and amplitude fatigue life of high-temperature alloys, which are often subjected to varying multiaxial mechanical and temperature loads. To validate the proposed model, seven variable temperature and amplitude fatigue tests were conducted on GH4169 nickel-based high-temperature alloy. The proposed model shows good accuracy and reliability in predicting the lifetime of high-temperature alloy components under multiaxial mechanical and temperature loads.
SU-Next: An Image Segmentation Model of Breast Tumors Based on U-Next and Attention Mechanisms
Authors: Zhu Dong , Wang Yongfang , Yang Mengzhu , Li Guoqiang , Wang Chengchao , Dong Hao , Kong Xiangxu
Published: August 2023

Breast cancer is one of the most common malignant tumors endangering women’s health today, and timely screening and targeted treatment of such tumors can effectively reduce the incidence of breast cancer. The commonly used method of breast tumors diagnosis is to detect the pathological image of breast tumor to find the spread of cancer cells and the difference in tissue morphology over time. There are a large number of complex problems such as interlaminar variation characteristics and structural and morphological diversity in the pathological sections of breast tumors, and the tumors must be accurately segmented before breast tumor detection, and the accuracy of breast tumor image segmentation directly affects the results of subsequent detection. Aiming at the problem that the U-Next network model is not clearly defined in the marginal region of breast tumors, we propose a SU-Next network model. The model adds an attention module to U-Next, which focuses on the feature values related to the current task and discards irrelevant features. By testing on the BUSI breast dataset, the effectiveness of this method in breast image segmentation was verified. Taking IoU and Dice as evaluation indicators, they reached 64.26% and 77.40%, respectively, and compared with U-Next, SU-Next improved by 1% and 1.19% respectively.
SDenseNet-An Improved DenseNet Model for Spiking Neural Networks
Authors: Guo Ce , Wang Xiaohong
Published: August 2023

In order to port DenseNet to a spiking neural network, its activation function must be modified to spiking neurons. In addition, the direct conversion model suffers from the inability to transmit non-peak sequences across layers and a sluggish training pace. A deep convolutional spiking neural network (DCSNN) architecture called SDenseNet has been designed in order to address these problems. The first step is to adjust the connection sequence of each module layer in the network to ensure that the output of each layer is the spiking sequence; Next, convolutional kernels of different sizes are used in parallel in the Transition layer to extract different features and spliced along the length of the channel in an attempt to build up the performance of the feature extraction. The framework suggested in this paper has demonstrated improvement in benchmark indicators such as training speed, accuracy rate, and mean loss when compared to the framework directly converted to the spiking neural network by training the two publicly image data sets named CIFAR-10 and CIFAR-100.
Experience of using the smart telemetric device “Personal Assistant of the Tractor Driver” for sowing winter wheat
Authors: Ivanov A B
Published: August 2023

The article presents the results of using the smart telemetric device “Personal assistant of the Tractor Driver” to select the most efficient operating modes of the sowing unit in real operation. The authors proposed developments that are aimed at improving the technical characteristics of the tractor in order to increase productivity and reduce the cost of its maintenance. Based on the results of the studies, the authors drew conclusions and presented quantitative and qualitative changes.
Methodology for developing geoinformation project for rational nature management of the land and property complex of the Northern Territories
Authors: Podkovyrova M A , Kondratova T V , Volobuev E A , Volobueva O N
Published: August 2023

The relevance of the study is due to the fact that in recent decades the development of the Northern territories of the Russian Federation (their land and property complexes) is characterized by intensification, which is primarily associated with the needs of the economy and the need for more active involvement of natural resources in economic turnover. It should be noted that both traditional and industrial nature management is carried out over large areas, often coexisting on the same geographical space. As a result, territories are formed where the economic interest of operating companies is confronted with the traditional way of life of the indigenous peoples of the North, in other words, “conflict zones”. In conditions of industrial development of the Northern territories, the most acute problem is the environmental optimization of natural-economic systems, the conservation of natural resources, and the historically established traditional nature management. In this regard, the authors of the paper propose a methodology for the development of a geoinformation project and give its approbation. The project is based on the cartographic and modeling methods using the MapInfo Professional software product.
Morphometric characteristics of the lakes of the Pustynsky district of the projected National Park “Nizhegorodskoe Zavolzh’e”
Authors: Astashin A E , Pashkin M N , Vatina O E , Grechkina S S , Badin M M
Published: August 2023

The paper presents the results of researching the morphometric and hydrological features of a group of lakes in the eastern part of the Pustynsky district of the projected National Park “Nizhegorodskoe Zavolzh’e” (Nizhny Novgorod Region, Russia). The lakes in question are the largest component of the hydrological system of the Serezha River basin on the territory of the Pustynsky district. The Seryozha River flows through most of the largest lakes, and its tributaries flow through some of them. Based on the conducted field studies, certain conclusions were drawn.
Scientific analysis of diagnostics of heating of solar panels and methods of their cooling
Authors: Saryyev Kakageldi , Nazarov Serdar , Gurbanova Gulalek , Matyakubov Amirhan
Published: August 2023

Today, the share of using alternative energy sources has become possible thanks to the study of the potential of a particular geographic area. In many countries, solar and wind energy have become a promising source. The study of a solar energy potential in the conditions of Turkmenistan showed that the potential of a solar radiation throughout the entire territory reaches 700-800 W/m2, and this is a great opportunity to use a solar energy. In the work, an experimental and theoretical study of the efficiency of the solar panel water cooling system in the hot climate of Turkmenistan was carried out. Since the climate of Turkmenistan is sharply continental, in summer the ambient temperature exceeds +40 °C. As a result of the research, the authors found that with an increase in the ambient temperature, the surface temperature of the solar panels also increases, which as a result leads to a decrease in its performance by 20-25%. The developed solution made it possible to reduce the surface temperature of solar panels in the hot climatic conditions of Turkmenistan and increase the current at 1200 hours of the day by 25%, at 1300 by 62%, at 1400 by 58% and at 1500 by 33.3%, to increase power by 19%, 42%, 38%, 18%, respectively, while 2.8, 3.3, 3.9, 5.4, 5.4, 4.9, and 3.2 kW of thermal energy were taken.
Sustainable development of water resources of Tajikistan
Authors: Gafforzoda I G , Arabov F P , Sodikov A K
Published: August 2023

This article considers and discusses the issue of ecological use of water resources of the Republic of Tajikistan. The main attention is paid to the study of the patterns and advantages of the concept of sustainable development in the field of water resources, the analysis and assessment of the availability of water resources in the republic and its individual regions, especially in the southeastern region of the republic, the analysis and determination of the total number of factors affecting the rational use of water resources, processing a set of recommendations aimed at developing the concept of sustainable development in the water sector, developing and implementing modern water management mechanisms and other important issues in this area, which all point to the features of this study. An analysis of the current state of the use of water resources was also carried out, existing problems of the industry were identified and solutions were proposed. It is noted that the Republic of Tajikistan has many competitive advantages in the water sector among the countries of the region, and the need to plan and design the strategic use of large water resources is considered one of the factors to protect and strengthen the competitive position.
Study and evaluation of racemose tomato hybrids in greenhouses in Armenia
Authors: Martirosyan H H , Vardanian I V , Zh Sargsyan G
Published: August 2023

The study was conducted at the Scientific Center of Vegetable-Melon and Industrial Crops of Armenia during spring and autumn vegetation seasons of 2021-2022. Foreign and local breeds of greenhouse F1 tomato racemose hybrids were studied, namely, Prodezo, Santiana, Adventure (Rijk Zwaan), Climbo (Syngenta) and the new Armenian hybrid RM-4. Hybrid Prodezo F1 was used as a control. Phenological observations, detailed studies of morphological characteristics of the hybrids and assessment of plant productivity were carried out during the research. Phenophase observations revealed that the period of the emergence of the first fruits in hybrids Adventure, Climbo and RM-4 had reduced by 6-7 days as compared with the control. The hybrids Adventure and RM-4 stood out by their relatively high total yield during the spring growing season, their average yields being 15.7 and 15.4kg/m2, which corresponded to an increase in control – 8.3 and 6.2%, respectively. Climbo and Adventure stood out during autumn vegetation with average yields 12.7 and 12.6 kg/m2, the increase to the control being 10.4 and 9.6% respectively.
Compilation of regional, national and pan-European approaches to biodiversity conservation in the protected area projecting on the example of the National Park “Nizhegorodskoe Zavolzhye” (Nizhny Novgorod Region, Russia)
Authors: Bakka S V , Kiseleva N Y , Bahtyurina L A , Shestakova A A , Noskova O S
Published: August 2023

The paper considers the compilation of regional, national and international approaches to the biodiversity conservation when selecting the territory and projecting the National Park in general. It is shown that the territories most valuable for the biodiversity conservation in the region meet the criteria of high national and international environmental importance. The National Park “Nizhegorodskoe Zavolzhye”, projected in the Nizhny Novgorod Region, will be important for the protection of 313 rare and endangered wildlife species in the region: 42 species are recognized as endangered in Russia and 84 – in Europe. All 8 types of endangered habitats in the region are represented in the National Park. The protected area will be of the utmost importance to conserve 6 types of such habitats. Sites of the National Park include 21 habitats of special conservation interests for Europe. A large number of endangered and vulnerable wildlife species and habitats in the Park are the basis for the successful solution of problems not only of nature conservation, but also of the development of ecological tourism.
Comparative Analysis of the conditions for the red tidies development at the Cretaceous–Paleogene boundary of the Stevens Klint and Zumaia sections
Authors: Egorov P I , Nesterov E M , Dubrova S V , Shmoylov K I , Markova M A
Published: August 2023

The closest mass extinction to present occurred at the Cretaceous–Paleogene Boundary. The article presents the results of a geochemical study of the sections Stevens Klint (Denmark) and Zumaia (Spain). Authors built petrochemical modules (CIA) and indicators which demonstrate differences in the evolution of the environment at the K / T boundary. On the basis of the modern behaviour and development of dinoflagellates, an assumption was made about the possibility of the development of red tides as a chain of catastrophic events at the K / T boundary. It is shown that the conditions of southern latitudes demonstrated the best conditions for the development of red tides and the creation of anoxic zones. While in the northern regions, red tides could only be sporadic and could not be the cause of the biotic crisis that began in the aquatic environment.
Interaction of plant polysaccharides (inulin, guar gum) with the 20-hydroxyecdysone from quinoa and spinach
Authors: Bokov D O , Bogachuk M N , Malinkin A D , Nazarova V A , Bessonov V V
Published: August 2023

The use of plant extracts rich in primary and secondary plant metabolites as biostimulants in agriculture is a modern approach for increasing the sustainability of crops. Quinoa seeds (Chenopodium quinoa Willd.) and spinach leaves (Spinacia oleracea L.) are a valuable source of biologically active compounds of plant secondary metabolism such as polyphenolic compounds and ecdysteroids. An important producers of primary plant metabolites – polysaccharides – are common chicory (Cichorium intybus L.), used to obtain inulin and cluster bean (Cyamopsis tetragonoloba (L.) Taub.), which accumulates guar gum. The study of the interaction of primary and secondary metabolites of plants is an essential component of research in order to increase their resistance to biodegradation and preserve the optimum of biological action. This paper presents data from a preliminary study of the interactions of components derived from plant raw materials in an in vitro model system. Evaluation of the sorption capacity of plant polysaccharides (inulin, guar gum) was carried out in relation to 20-hydroxyecdysone (20E) – a minor biologically active substance (BAS) of extracts from spinach leaves and quinoa seeds. The sorption ratio of 20E was 92.25-95.87% for the studied concentrations of inulin model solutions. Sorption ratio for a solution of guar gum with a concentration of 0.5% was 94.17-96.00%, in other cases, a complete sorption of 20E was observed. Thus, one should be guided by the optimal ratio of polysaccharides and extracts enriched with 20E to ensure the maximum physiological effect.
Status and potential of forests self-regeneration in the Middle Volga region under pyrogenic load
Authors: Ilyina V N , Kozlovskaya O V , Amosova A A , Belyaeva Yu V , Kuzmin D I
Published: August 2023

The question of forest status in the Middle Volga region under anthropogenic load is considered. Forest stand vulnerability to fires depends on many factors: age, vitality, exogenous environmental factors. The renewal of forest communities is characterized by a change and impoverishment of phytocenoses.
Effect of oil and surfactants on changes in some physical properties of soils
Authors: Rumin M B , Cherkasov D V , Lopatovskaya O G , Zhdanova G O , Kupchinsky A B , Stom D I
Published: August 2023

The paper shows that oil pollution of gray forest and soddy-podzolic soils led to a decrease in capillary water capacity, plasticity and solid phase of soils. As a result of the introduction of the nonionic surfactant tween-80 into the oil-contaminated soil, these indicators were partially restored, but their values remained lower than in soil samples subjected to oil treatment. The obtained materials allow us to speak about the fundamental possibility of using surfactants for the remediation of oil-contaminated soils.
Cable Tension Estimation For The Cable-stayed Bridge With Hysteresis Damping
Authors: Huynh-Thai An , Pham-Bao Toan
Published: August 2023

Damping materials are popular applications for almost vibration structures; however, they have rarely been investigated in different practical experiments. That is why new approaches would be necessary to assess these problems. In this study, the mathematical model of cable is remarkable in assessing the cable tension of the cable-stayed bridge. A differential vibration equation is used to derive the cable tension considering material damping as the hysteresis phenomenon. The experimental measurements of cable vibration at Phu My Bridge are calculated to find approximate damping ratio and tension values. The selected damping model with experimental data has been collected to derive an efficient method for evaluating structure status. These values are used to assess damping efficiently in the cable-stayed bridge structures. The results presented in this paper shall help elucidate experimental procedures for characterizing damping materials. The proposed procedures are used not only for the cable-stayed bridge but also for generally cable-stayed structures.
Applications of Passive Infrared Thermal Imaging for Detecting Delaminated Areas of Ancient Rock-cut Tunnel
Authors: Tran Quang Huy , Dang Quoc My , Pham Xuan Tung , Truong Thanh Chung
Published: August 2023

Delaminations are generally developed in construction works due to numerous factors, including cyclic loading, water flow, and weather conditions. A conventional non-destructive method, such as tapping or chain dragging, is commonly used to predict subsurface delaminations. However, tapping tests may require more precision, especially for minor subsurface defects. Passive Infrared Thermal Imaging or Passive Infrared Thermography (PIRT) effectively detects sizable delaminated areas of a structure quickly. However, the inspected structural components are recommended to be exposed to direct sunlight. In this study, PIRT was used to investigate an operating ancient rock-cut tunnel and to detect potentially dangerous locations where delamination and spalling have occurred. The results prove that PIRT can effectively detect delaminated areas, even when there is only a 1-2°C atmospheric temperature difference nine hours before testing.