Yu Dong

Abstract Aim Fires are a serious threat to people’s lives and property. Detecting fires quickly and effectively and extinguishing them in the nascent stage is an effective way to reduce fire hazards. Currently, deep learning-based fire detection algorithms are usually deployed on the PC side. Methods After migrating to small embedded devices, the accuracy and speed of recognition are degraded due to the lack of computing power. In this paper, we propose a real-time fire detection algorithm based on MobileNetV3-large and yolov4, replacing CSP Darknet53 in yolov4 with MobileNetV3-large to achieve the initial extraction of flame and smoke features while greatly reducing the computational effort of the network structure. A path connecting PANet was explored on Gbneck(104, 104, 24), while SPP was embedded in the path from MobileNetV3 to PANet to improve the feature extraction capability for small targets; the PANet in yolo4 was improved by combining the BiFPN path fusion method, and the improved PANet further improved the feature extraction capability; the Vision Transformer model is added to the backbone feature extraction network and PANet of the YOLOv4 model to give full play to the model’s multi-headed attention mechanism for pre-processing image features; adding ECA Net to the head network of yolo4 improves the overall recognition performance of the network. Result These algorithms run well on PC and reach 95.14% recognition accuracy on the public dataset BoWFire. Finally, these algorithms were migrated to the Jeston Xavier NX platform, and the entire network was quantized and accelerated with the TensorRT algorithm. With the image propagation function of the fire robot, the overall recognition frame rate can reach about 26.13 with high real-time performance while maintaining a high recognition accuracy. Conclusion Several comparative experiments have also validated the effectiveness of this paper’s improvements to the YOLOv4 algorithm and the superiority of these structures. With the effective integration of these components, the algorithm shows high accuracy and real-time performance.

Achieving a high sensitivity of sensors over a wide linear range is crucial for practical applications. Introducing various micronano topologies is the most effective approach to enhance sensor sensitivity. Unfortunately, due to the size effect, the surface structure is prone to deformation and saturation under pressure, limiting sensitivity to a narrow range and hindering broader applications. Additionally, few of the recently developed sensors with wide sensing ranges have been able to achieve the high sensitivity levels provided by micronano topological structures. The achievement of an effective trade-off between high sensitivity and a wide sensing range still presents significant challenges. In this study, a versatile strategy is proposed to design a high-sensitivity flexible pressure sensor with an improved sensing range. A cost-effective and adjustable wire mesh is utilized to introduce microstructures while constructing a hierarchically reinforced structure, effectively combining porous and surface microstructures. Hybrid carbon nanofibers and graphene serve as conductive materials to further enhance the performance. The sensor demonstrates a high sensitivity of −1.12 kPa–1 and extends the sensing range to nearly 3.9 times (0–853 Pa) compared to sensors with only microstructures (0–220 Pa). Moreover, it exhibits a response speed comparable to that of the human body (26 and 33 ms) and a high durability (4000 cycles). The sensor showcases excellent signal response to high-pressure movements (finger bending and wrist bending) and low-pressure breathing movements, holding promising potential for motion monitoring and information encryption applications.

New energy landscape architecture is a new energy building integrated with aesthetics and art design, which can meet people's dual needs of low energy consumption and architectural aesthetics. In recent years, the development speed of new energy landscape architecture is increasing, and the design and research of new energy landscape architecture has become a hot spot. The new values, aesthetics, technology and design concepts will always stimulate and promote the urban landscape design to constantly enrich itself. Therefore, it is a new exploration direction to shape new urban landscape design through multimedia technology. Multimedia technology uses computer to process text, graphics, images, sound, animation, video and other information to establish logical relationship and human–computer interaction. The virtual reality technology in multimedia integrates the latest development achievements of computer graphics, multimedia, artificial intelligence, multi-sensor, network, parallel processing and other technologies. Multimedia technology makes the colour of the landscape form the most visual impact factors, it is easy to leave a deep impression on people, to achieve the visual effect of the landscape. Therefore, this paper studies soft multimedia assisted new energy productive landscape design based on the environmental analysis and edge-driven artificial intelligence. The designed framework is efficient through the comparison simulations.

Abstract Drought is one of the major natural disasters affecting the development of economies and society. Drought early warning is the primary step and most important non-engineering measure for drought relief. This paper took Yuqiao Reservoir in Tianjin as a case study and analysed inter-annual changes of the drought limit water level. First, the causality between variables in the water supply–demand system was analysed, and a structural diagram of water sources allocation was drawn. Coupled with the parameters and a structural diagram, a system dynamics (SD) model of the water supply volume was established. Secondly, simulation results were tested to ensure that the model was valid. The water supply volume from 2003 to 2020 was simulated by using the model. Finally, based on the inflow process and the water supply volume, the drought limit water level was calculated. The results showed the water supply volume of Yuqiao Reservoir has changed remarkably. The drought limit water levels in 2003–2012 and in 2016–2020 were 16.70 m and 16.30 m, respectively: a difference of 0.40 m. The regulation curve of guarantee for water supply during 2016–2020 is significantly lower than that of 2003–2012. This research is of great significance for drought resistance, disaster mitigation and reservoir management.

Abstract Agricultural robots have been recognized as one of the emerging technologies with the highest potential in agriculture. Through grasping the research and development trend of international agricultural robots and analyzing the technical hot spots, the strategy or plan of agricultural robots in China can be formulated with a decision-making support. This paper applies the methods of expert consultation, qualitative investigation and quantitative analysis to analyze and summarize the hot spots and frontier of agricultural robot research and the future development trend by tracing the development course of agricultural robots at home and abroad. Based on the analysis of China’s strategic needs and key development directions for the next few years, this paper provides references and suggestions for China’s forefront planning on basic research, technological R&D and industrial layout of agricultural robots in the future.

To save the labor cost, industry robot is applied in production line. This paper deals with the design of the beverage packaging line using high speed robots, which will be applied in Hangzhou Wahaha Group Co., Ltd. to satisfy their requirement. On the basis of investigation of the previous line, the packaging process is briefly addressed. Taking into account the circumstance of the workshop area, the layout of the packaging line is proposed. With Petri net technology, the model of the beverage packaging line is built and by analyzing the model, it is proved that the whole system is reachable, bounded and reversible. In addition, the Petri net model builds the theoretical basis for the network control of the whole packaging line.

Much of the research on the bioarchaeology of infant feeding is interpreted solely as the result of the availability of suitable weaning foods and “weaning stress,” which largely overlooks the individual and social factors involved in food allocation and the weaning process. The focus on the impact of subsistence change and “weaning stress” has understandably been a preoccupation in bioarchaeology given its effects on women’s fertility and its relationship with the “Neolithic demographic transition,” and bioarchaeologists’ interest in health-related effects of infant feeding practices. However, this focus largely ignores individual agency and a myriad of other social factors that can affect breastfeeding and weaning practices. This chapter reviews bioarchaeological research on infant feeding methods and approaches, with a focus on chemical isotopic analyses of bones and teeth, which highlights the complex and individual stories of infant feeding, weaning, and the relationship between maternal and infant health. We present a case study from two archaeological sites during the Eastern Zhou Dynasty in China that shows sex-based differences in infant feeding and weaning. This highlights the importance of the consideration of aspects of social identity, the life-course, and cultural factors in the interpretation of infant feeding in the past.

With manufacturing industry tending to high-mix low-volume production, the turn-mill machining technology has recently received much attention. This research proposes the programming method using process planning and kinematic based on the existing problems during the course of the programming for the mill-turn machine. Firstly, through computing the volume of removal shape on the cylindrical blank shape, dividing the machining process for the spindles. Then recognizing the turning and milling process and computing their removal shape for obtaining tool path. According to complex configuration of the mill-turn machine, the machine kinematic chain is created to convert cutter location data generated into the NC data. Finally the effectiveness of the programming method is confirmed by machining experiment.

Ancient human bones in Xigongqiao Site, Tengzhou, Shandong Province, were analyzed by use of SEM-EDS. SEM indicated that the microstructure of Haversian system was destroyed under the impact of bone diagenesis. The apparent difference in elemental distribution in the bone cross section showed that the enrichment or loss of elements can occur not only in the inner and outer surface, but also in the middle. This study will have great influence on how to deal with the ancient human bones before any palaeodietary research in the future.

This paper provided the manufacturing process planning method of the double main spindles for the turn-mill machine based on model volume. Firstly, the cross section information of the 3D grid data model was obtained by using the algorithms of extracting partitions plane information. Secondly, differentiated the cross section shape to recognize the milling and turning process according to extracting partitions plane information. Then, it computed the treated volume in order to obtain equal division plane by extracting partitions plane information. According to readjusting the equal division plane defined the process machining boundary. The boundary divided the complex process workpiece into main and sub spindle process for the double spindles. At last, the machining experiment verifies the adaptability and accuracy of the process planning method.

The packing robot in China is less developed than western countries at present. For the demand of packaging in food and beverage industry, the integrated case packer based on robot is developed and used in production line. The scheme and layout of the system with seven subsystems is proposed. With the identification of the critical path, the process is analyzed to improve the efficiency of the integrated case packer. Finally, path planning and motion parameters of packing operation are optimized and its experimental research is carried out, which verifies the feasibility of system design. The equipment is applied in Hangzhou WaHaha Group Co., Ltd. with a desired result.

For project variation of referencing similar price,it is important to ensure that integrated unit price is determined reasonably.However,laws and regulations are not clearly stated and relevant research are few.Based on analysis of relevant literatures,the paper ascertained applicable scope of similar pricing principles.Three principles to ensure this kind of variation are presented.The results have some practical meaning to enhance the owner’s level of project variation management and to control the project cost.

Scientific Reports 7: Article number: 38706; published online: 31 January 2017; updated: 14 March 2017 The Acknowledgements section in this Article was omitted. The Acknowledgements should read: “This work was supported by the National 863 Hi-tech Project (2015AA033703), National Natural Science Foundation of China (NO.

The Yangze River Delta now enjoys the most prosperous science-economy and the most profound cooperative network of science & technology (CNST)in China. This paper obtains the number of papers published or co-published in Shanghai City, Jiangsu Province and Zhejiang Province, which are all within the region of the Yangze River Delta, during the years 1994 to 2005 from Chinese Full-text Database, and establishes a dynamic model of regional CNST with the scientific output data obtained above and the scientific input data of the corresponding year. In the Hopfield type non-linear neural network model... The author discusses the rules of adjustment and optimization of ,the intensity of scientific cooperation, and studies the development trend in regional CNST and the impetus of regional cooperation of science & technology

On account of the limitation of the language,litigants' consensus can not have an ideal embodiment in the contract.There have always been controversies about the interpretation of contract clauses in practice.Therefore it is unavoidable to interpret the contract.Starting from the reason of contract interpretations,this paper briefly analyzes the subject,object,aim,type and methods of contract interpretations.

MBO has been approved to be an effective system in practices in western countries, which has great strategic significance and institutional values for carrying out reforms in the aspects of property right of state-owned enterprises, strategic reorganization of the national economy, bettering company's administration structure and setting up operator's incentive mechanism, etc. Due to some problems in laws and regulations, unbalanced information, and the unopenness of trade, there are losses of state assets in the process of MBO. Thus it is necessary to set up legal regulations, relevant market mechanism and awareness of the importance of MBO, so as to promote the reform in state-owned enterprises.

The author analyzes the concept and function of damage compensation in divorce. It points out the significance and the legislative cause of damage compensation system in divorce.The author puts forward her own points to composing items,relation subject and damage scope.

Feminist writing and theory is an important literary phenomenon in 1980s and 1990s Chinese literature. It peaked in 1995 and declined later on. This article focuses upon the substantial influence of feminist writing and theory on contemporary Chinese literature.

The big contrast between the short-term income and long-term return of stock IPO has attracted the attention of researchers in recent years. The causes of IPO are the market environment and life cycle of the company. The unsymmetry theory can explain the phenomenon of price constraints, however, it is challenged by the irrational operation and differences and changes in policies. The stock disposition theory is drawing much attention due to its multi-facet effects. The most disputable aspect of stock is the disappointing outcomes of the long-term return after the stock is put on market for the first time. It is proposed that a solution to this problem is to improve the micro-structure of stock market.

The duty of damage compensation in divorce is a duty of infringement. The behavior of broken marital relationship is the infringement behavior violating the spouse right. The establishment of the spirit indemnity system violating the spouse right is the inside request of marital compulsony. And it is the direct reflection that the power of the spouse body belongs to the civil law. Also, it is the necessary contents of perfecting the marriage family law and strengthening the socialist legal system. There are three main functions of the damage compensation in divorce: fill up the damage,spirit appeases, and sanctions that prevent the behaviors of breaking the law. The composing beard of the divorce indemnity civil case duty must have four important items at the same time,those are the behavior of breaking the law, the injure fact,the relationship between cause and effect,and the subjective fault. The corpus of the divorce indemnity request is only for the no fault spouse,and the corpus of undertaking the damage compensation in divorce is only the fault spouse who has malpractice in legal and causes divorce.

Abstract New energy landscape architecture is a new energy building integrated with aesthetics and art design, which can meet people's dual needs of low energy consumption and architectural aesthetics. In recent years, the development speed of new energy landscape architecture is increasing, and the design and research of new energy landscape architecture has become a hot spot. In the era of media and information, the thinking mode, aesthetic concept and living space demand of the public and landscape architects are changing. The new values, aesthetics, technology and design concepts will always stimulate and promote the urban landscape design to constantly enrich itself. Therefore, it is a new exploration direction to shape new urban landscape design through multimedia technology. Multimedia technology uses computer to process text, graphics, images, sound, animation, video and other information to establish logical relationship and human-computer interaction. The virtual reality technology in multimedia integrates the latest development achievements of computer graphics, multimedia, artificial intelligence, multi-sensor, network, parallel processing and other technologies. Multimedia technology makes the color of the landscape form the most visual impact factors, it is easy to leave a deep impression on people, to achieve the visual effect of the landscape. Therefore, this paper studies the multimedia assisted landscape design of new energy production based on environmental analysis and artificial intelligence.