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The development of curriculum standards for ideological and political theory courses in higher vocational education should be grounded in the distinctive characteristics and attributes of vocational education and the specialized talent training programs the institution offers to establish tailored curriculum standards. As an illustrative case, the course titled “Introduction to Mao Zedong Thought and the Theoretical System of Socialism with Chinese Characteristics” at Dalian Vocational Technical College serves as a compulsory course for students across all majors. Three-dimensional objectives have been delineated to align with professional ideological and political education demands. Emphasis is placed on the specific traits of higher vocational students, the unique features of their respective disciplines, and the contextual circumstances prevalent within the local environment. The objective is to investigate a comprehensive evaluation index system and an augmented assessment process that places student involvement at its core. This endeavor aims to foster a collaborative space for ideological and political education, integrating these principles into the curriculum while fully harnessing the potential of local and institutional environment and individual student circumstances, ultimately driving the innovative advancement of ideological and political theory courses in higher vocational education in the new era.

with social development and technological progress, higher standards and requirements are constantly put forward for talents. traditional employment courses have problems such as lack of pertinence, single content, lack of practice, and lack of communication between teachers and students, which cannot meet the needs of students for employment-related knowledge. centering on students’ career development, the paper designs courses from five aspects: reforming the content and form of employment guidance courses, strengthening the construction of employment guidance service teachers, establishing and perfecting the extracurricular normal personalized employment guidance system, cultivating graduates’ ability to independently plan for the future, and exploring the whole-cycle personalized employment guidance service system.

To conduct regional geological disaster risk evaluation zoning in a scientific and reasonable manner, and provide a decision basis for local territorial spatial planning, geological disaster risk prevention and control, and disaster prevention and mitigation work. This study, on the basis of collecting relevant data sources and field investigation, comprehensively analyzed and studied the geological environmental conditions of disaster pregnancy and the development and distribution pattern of current disasters in Pingba District, built an information volume model for susceptibility evaluation based on the influence factors of known disaster areas, and also reasonably determined the hazard and vulnerability evaluation model by combining the characteristics within Pingba District, thus making the risk evaluation of the county highly accurate, operable and scientific, and the results of its risk evaluation zone zoning are more consistent with he reality within the county. The risk evaluation methods and processes described above are synthesized with a view to providing reference and guidance for their application in similar work.

With the rapid development of industry and the increasing population, the balance of groundwater resources has been seriously damaged in China. Quantitative prediction and assessment of the groundwater environment have become necessary for the rational development, use and protection of groundwater resources. Taking the thermal power plant as an example, based on the engineering characteristics and possible pollution of the proposed construction project, the mathematical model of groundwater pollutant migration is established, and the groundwater pollution is predicted by an analytical method. COD, ammonia nitrogen and diesel fuel were selected as predictors to predict the pollutant migration after 100, and 1000 days of pollution occurrence, respectively. The results show that the pollution range will gradually expand with time. After 1000 days, the migration distance of pollutants such as COD and NH3-N reaches 80m, and the influence distance of pollutants such as diesel oil will gradually weaken with time. If not controlled and managed in time, the leakage of pollutants can cause serious pollution to groundwater during the operation of the electric field.

Based on the teaching design centered on “five bases” (i.e., the type-based teaching philosophy, concretization-based teaching objectives, theme-based teaching content, professionalism-based teaching strategies, and two-way-based teaching evaluation), the implementation of teaching innovation concerning ideological and political theory course in higher vocational colleges is mainly aimed at creating an online-offline mixed linkage pattern, and using the systematic thinking to carry out the teaching implementation process characterized by “four alls” (i.e., all-member problem investigation, all-around organization model, all-chain production-education integration, and all-process data analysis). On the whole, the implementation of the above-mentioned teaching innovation is committed to promoting the effective aggregation of element units with teachers and students as the common subject, as well as innovating and connecting resource carriers in series with theory as the axis. To this end, the global vision should be used to design the structure of the teaching ecosystem, plan the corresponding operation mode and assessment mechanism, and promote the dynamic and balanced operation of the curriculum teaching ecosystem, with a view to improving quality and enhancing efficiency as well as effectively serving the talent cultivation.

The application of artificial intelligence in the ideological and moral education of Chinese universities is an inevitable trend of the development of science and technology and The Times. Artificial Intelligence(AI) is not only the environmental constraint variable of ideological and moral education innovation, but also the driving factor of innovation process. AI drives the integrated development of information technology and ideological and moral education, enhances the affinity of ideological and moral education, and promotes the precision of ideological and moral education. Ideological and moral education should always aim at the social changes driven by artificial intelligence, and strive to cultivate new people who can compete and cooperate with robots.

Weeds are one of the main factors affecting orchard yield, fruit quality and economic benefits. However, present methods have been lower effect and high labor intensity. To inhance the effect of weeds control on orchard, a new green and economic agent suitable for drone with choline chloride and eucalyptus oil as the main components was developed. Adopting optimized “3414” test design, the paper studied the prevention and control effect of this new weed control agent on 8 kinds of main weeds in the orchards of the Yellow-Huai Rivers. The results showed that T5 and T12 were significantly (P≤0.05) control the growth speed of 8 kinds of weeds, T4 was only inhibit the growth of Erigeron canadensis, Digitaria sanguinalis and Artemisia annua, T11 was only inhibit the growth of Tribulus terrestris, Humulus scandens and Cyperus rotundus, and T3 and T13 were promote the growth of weeds, which had the worst control effect among all treatments. Combined with the economic benefit analysis, the cost per 667m2 of weed control of T12 was 124 RMB, which was the most economical compared with manual weeding and mechanical weeding. Therefore, applying 30g choline chloride, 120 mL eucalyptus oil and 75g sucrose ester to each 667m2 is recommended to be popularized as a new green and economical weed control agent in the orchard production of the Yellow-Huai Rivers.

In coal-fired power plants, how to timely inventory coal storage, in order to optimize the coal stock, and improve coal blending operation, and then carry out economic dispatch scientifically and reasonably, has always been an important topic. The traditional way of artificial method has big error, high cost and serious waste of resources. Ultrasonic measurement technology is greatly affected by time difference and dust. Measurement technology based on computer vision requires interpolation to fit the correction model. The above methods all have large measurement errors and have been eliminated by the market. This paper mainly introduces coal measuring technologies based on laser and uav tilt photography which have been researched and applied more recently. Their respective installation methods, characteristics and applicable working occasions are analyzed. They have the common characteristic that the 3d coordinate point cloud data of coal yard surface needs to be solved before the 3d model of coal yard can be generated and the coal storage amount can be calculated. In the case that the 3d coordinate point cloud data of coal yard of power plant cannot be obtained directly, 3d reconstruction can be carried out by using 2d images of coal yard in coal report, or by using neural network model, and then the coal volume can be checked. This research idea is of great significance to realize effective and accurate supervision of coal storage in power plants..

For the surface defects of aluminum profiles, there are problems of multi-scale, small object and irregular shape. This paper proposes a defects detection algorithm based on improved feature pyramid. This method compresses and saves the feature information extracted by the backbone networks, and calculates the similarity between deep and shallow features, so as to alleviate the phenomenon of loss of feature information and weakening of feature expression ability, thereby solving the problem of multi-scale and small object. At the same time, deformable convolution is introduced to enhance the feature extraction ability of the model and alleviate the detection problems caused by irregularly shaped defects. To verify the effectiveness of the proposed method, Faster R-CNN was used as the basic detection algorithm to conduct ablation experiments, and compared with the classical detection algorithm, the accuracy rate was as high as 72.8%. The experimental results show that the proposed method has a good performance on the task of aluminum profile defects detection, and is superior to the comparative detection algorithms.

As the channel spreads the Chinese voice and promotes Chinese culture, the status of political document translation is self-evident with the deepening of global communication. Taking the English translation of the reports of the 20th and the 19th CPC National Congress as examples, this paper makes a contrastive study of their lexical features in a corpus-based way. With the assistance of corpus analysis software such as AntConc, TagAnt and WordSmith4.0, the author investigates TTR (type-token ratio), lexical density, average sentence length, high-frequency words, and keywords between two reports. It is found that the report of the 20th CPC Nation Congress has more diversified and native expressions with fewer words used, which provides a guiding significance for the English translation of political documents.

This paper discusses the construction and implementation of teeth holes filling mathod. The architecture and model of the combination of PONN multi-layer to cover teeth and fill holes of teething. Finally, the position of teeth is found, and the tooth model is placed through 3D space. Experimental results show that the method has good expansibility and superiority.

As a modern infrastructure for offshore oil and gas resources development, offshore platforms have many advantages, such as high efficiency, concentration, flexibility, and repeatability. At the same time, its upper module environment is bad, the equipment is numerous, has the very big risk. In case of fire and explosion and other accidents, it is difficult to get timely rescue. Therefore, fire risk assessment for offshore platform is very necessary. This paper focuses on the research results in the field of fire risk assessment of offshore platforms at home and abroad, points out the shortcomings of current research, and provides reference for risk reduction and effective prevention of offshore platform operations.

In this paper, a company greening plan to evaluate ecological service function and value analysis, to determine whether a company greening scheme to the excess emissions of alternative to repair the enterprise ecological environmental damage caused by the results show that a company in September 2019 ~ 2020 at the end of greening measures total carbon release oxygen value of 605000 yuan, including carbon value of 278900 yuan, releasing oxygen value of 326100 yuan. The total value of the greening measures taken by the enterprise from September 2019 to the end of 2020 is 16, 300 yuan, of which the value of providing negative ions is 12, 300 yuan, and the value of absorbing pollutants and catching dust is 4, 000 yuan. The ecological service function of the greening scheme can partially offset the ecological environmental damage caused by the excessive emission of enterprises.

[Objective] Through in-depth study of traditional Gan residential buildings, it is found that in China’s traditional culture, nature is more important than architecture. Many people believe that architecture is like a man-made natural object, which can make people return to a feeling of living in nature, and is also a state of ideal life for many residents in China. [Methods] By using the analysis method, it is found that the traditional residential building structure of Ganpai is a bucket structure. The basic unit is the ‘enter’ relationship, which combines the ‘enter’ relationship, the adjustment of column spacing and the reduction of column to form the ‘+ -’ relationship. Through this way, a unique architectural group layout can be formed. [Conclusion] Therefore, we should fully combine traditional materials with modern information means to improve our traditional technology, so as to keep pace with the times, keep pace with the times and keep pace with the times.

Cross-laminated timber (CLT) panels are increasingly used in mid-rise buildings or even taller structures in North America. However, prolonged exposure to moisture during construction and in service is a durability concern for most wood products including CLT. To investigate practical solutions for reducing on-site wetting of mass timber construction, CLT specimens with a range of moisture protection measures, in six groups were tested in the backyard of FPInnovations’ Vancouver laboratory from Oct. 2017 to Jan. 2018. This study investigates the wetting and drying behaviours of the tested CLT specimens through 2-D hygrothermal simulations. The simulations are performed for base specimens (no protection measures) of group 1 (without joint or plywood spline) and group 2 (with a butt joint and plywood spline). For group 1, three data sources of material properties are used to create the models, and the data that led to the best agreement between simulations and measurement are used for creating the models of group 2. For group 2, two types of hygrothermal models are created with or without considering the differences in water absorption between the transverse and the longitudinal grain orientations. In addition, rain penetration is taken into account for the joint area. It is found that the model with considering the differences between transverse and longitudinal grain orientations shows a better agreement than that without considering such differences.

The influence of extreme climate such as severe cold temperature on power transmission system can not be ignored, the low temperature could cause complicated mechanical and dielectric deterioration to electrical materials and devices. In China’s recent operation experience of reactors, it is found the burning fault rate of dry type air-core reactors in cold northeast region was obviously higher than that of other regions, which had inflicted negative impact on substation equipment and personnel safety. To tackle with the problems and prevent potential faults, typical fault characteristics and mechanism at low temperature, the specific influence of low temperature on materials and reactor performance, as well as corresponding operation strategies would be studied and proposed in this paper.

Affected by the epidemic situation and driven by the new economic model, the influence of live broadcast has been expanding. The most significant feature of live selling of agricultural products is direct marketing in production areas, which prevents middlemen from making price differences. Through the analysis of the mode, type and content of the network live broadcast of agricultural products, the corresponding problems are summarized by means of case analysis and questionnaire survey. According to the characteristics of network live broadcast and agricultural products, this paper puts forward the corresponding marketing strategies, explores the way to improve the sales of agricultural products by using the live broadcast platform, and at the same time, it has a certain reference for Rural Revitalization.

The mechanical property of steel reinforced PP ECC columns under reverse cyclic load is investigated and results are presented in this paper. The influence of reinforcement ratio, curing age and volume fraction of PP fiber on load bearing capacity, energy dissipation and stiffness degradation is investigated. The results highlighted the positive contribution of PP ECC to enhance strength and energy dissipation capacity which is important to evaluate the performance of structures subjected to reverse cyclic loads. According to the experimental study on mechanical behavior of steel reinforced PP ECC columns under reverse cyclic loading, the formula of model parameters related to reinforcement ratio are proposed，it is founded that the restoring force model established is of a certain degree of adaptability.

In recent years, the significant improvement of inertial navigation, leaves the gravity disturbance as the important factor which affects the accuracy of inertial navigation. This paper focus on the compensation for gravity disturbance with gravity spherical harmonic model, especially the optimal degree of gravity spherical harmonic model with which to calculate the gravity disturbance. The effect of gravity disturbance on inertial navigation is analysed based on the amplitude-frequency response characteristics of inertial navigation error differential equation, then the dominantly influential frequency band of gravity disturbance can be found which is the target of compensation. Combination the dominantly influential frequency band with the spatial resolution of the Earth’s gravity spherical harmonic model EGM2008 which is used to calculate the gravity disturbance, the optimal degree can be determined based on an algorithm proposed in this paper. Finally, shipborne inertial navigation experiment confirms the correctness and effectiveness of the proposed algorithm.

The redundant rotational inertial navigation systems can satisfy not only the high-accuracy but also the high-reliability demands of underwater vehicle on navigation system. However, different systems are usually independent, and lack of information fusion. A reduced-order Kalman filter is designed to fuse the navigation information output of redundant rotational navigation systems which usually include a dual-axis rotational inertial navigation system being master system and a single-axis rotational inertial navigation system being hot-backup system. The azimuth gyro drift of single-axis rotational inertial navigation system can be estimated by the designed filter, whereby the position error caused by that can be compensated with the aid of designed position error prediction model. As a result, the improved performance of single-axis rotational inertial navigation system can guarantee the position accuracy in the case of dual-axis system failure. Semi-physical simulation and experiment verify the effectiveness of the proposed method.

In order to improve the specific capacity and energy density of activated carbon electrode materials activated carbon was modified by surface treatment using hydrogen peroxide. The modified carbons were characterized the changes of pore structure and functional groups before and after modification by N2 adsorption-desorption isotherms and FTIR spectroscopy. The three electrode system was assembled with modified activated carbon as electrode materials and Na2SO4 as the electrolyte. The influence of surface modification on the performance of EDLCs was studied by galvanostatic charge-discharge, cyclic voltammetry, and alternating current impedance. The results show that the surface chemistry of the modified activated carbon material has changed, the specific surface area has changed and the pore size has not changed much with the introduction of new oxygen-containing functional groups. The specific capacity of the activated carbon material modified by 5h is 75F/g, which is 86.1% higher than that before the modification. It can be seen that the change of functional group after the modification of activated carbon can help to increase the specific capacity.

Abstract ATP-citrate lyase (ACL), one of the lipogenic enzymes, catalyses the formation of acetyl-coenzyme A (CoA) involved in the synthesis of fatty acid and cholesterol. In pig, very little is known about the ACL gene. In this work, the mRNA differential display technique was used to analyse the differences in gene expression between Meishan and Large White pigs and the F1 hybrids of both direct and reciprocal crosses. Our results show that among the differentially expressed genes ACL is up-regulated in the backfat of the F1 hybrids. After cloning and analysing the fulllength cDNA and the 870 bp 5'-flanking sequence of the porcine ACL gene, a C/T mutation at position -97 bp upstream of the transcription site was detected. Luciferase activity detection showed that this mutation changed the transcriptional activity. In F1 hybrids, the heterozygous genotype CT was more frequent than the homozygous genotypes CC and TT. Real-time PCR analysis showed that in Meishan pigs, ACL mRNA expression was more abundant in individuals with genotype CT than in those with genotype CC or TT or in Large White pigs. These results indicate that the C/T mutation affects ACL mRNA expression, probably via the activator protein 2.

In the background of industrial 4.0, this paper analyzes the developmental road about customized furniture factory. Based on the concepts and features of industry 4.0, this paper analyzes the composition of the customized furniture factory, the main operation system and the operation process of the intelligent customized furniture factory. In order to achieve efficient and accurate production targets, intelligent customized furniture factory should be set up through the establishment of cyber physical system( CPS) to cover the intelligent network.

This study has selected sorts of comments about MI’s products from its customers’ as research objects, then we used the theory of Rooting to analyze those objects, and explored the Customer Experience Dimensions’ type, characteristics and the way to impact others. The results come as follows: First of all, the Customers Experience Dimensions are consisted of nine major categories defined as Value Perception Experience, Sensory Experience, Quality Assurance Experience, Parts Experience, Purchase Experience, Service Experience, Brand Comparison Experience, Compensating Experience, Brand Reliance Experience respectively. Secondly, we put these nine major categories above all to compare the conclusions with the previous research, then we analyzed and integrated them, and finally obtained seven major categories containing Purchasing Website, Product Rendering, Delivery Experience, Transaction Convenience, Safety and Security, Brand Reliance, Marketing Communications respectively. In addition, we have conducted a further investigation to draw three types about the Customer Experience named Function Experience, Purchasing and Service Experience, and Brand Experience. Last but not the least, this paper has definitely provided the basis theory of how does the Customer Experience affect the Brand Loyalty for future research, as well as guided a definite orientation.

This study discusses the impact of brand awareness and customer experience on brand loyalty of MI. This study randomly selected the people who have purchased the MI’s product to complete the questionnaire. The variables of this questionnaire included population statistics variables, the brand awareness of consumers, the experience of consumers when purchasing, and the customer’s loyalty of its brand. By using the SPSS to analyze the date from reliability analysis, validity analysis, correlation analysis and descriptive statistical analysis of each variable. As the results shown, brand awareness can positively predict brand loyalty. Service experience and emotional experience can positively affect brand loyalty. There existed significantly positive correlation among brand awareness, service eexperience, emotional eexperience and brand loyalty. Finally, summarizing the empirical results, and bringing up some limitation and expanding direction of this research.

College volunteer’s activities are currently linkages between societies and effective way. But the management of the university’s volunteer is more difficulty. In order to effectively address these issues, it is necessary to construct volunteer’s management platform system based on dynamic collaborative task according to the characteristics of volunteers and volunteer characteristics of scientific tasks assigned tasks, and task execution in the entire life cycle of the actual dynamic management, can effectively improve the work efficiency.

In this paper, we report a simple but effective algorithm to estimate the undetermined coefficients in the formula of soil water electrical conductivity value by the soil apparent electrical conductivity method. By doing so, the coefficients can be accurately obtained to further calculate the soil water electrical conductivity. According to the process of calculating the soil solution electrical conductivity based on the apparent conductivity of soil, the error of the calculation equation is effectively calculated by the two order curve fitting method. Meanwhile the genetic algorithm is adopted to reduce the influence of the data error generated by the proposed algorithm, and improve the accuracy of the data as well. The experimental results demonstrate that the solution by the proposed algorithm can be effectively obtained and the error change is in one direction simultaneously. With these advantages, we can use soil water electrical conductivity to calculate the content of soil salt.

To compare the shrapnel lethal power with different shell material and charge, LS-DYNA was used to numerically simulate four kinds of shrapnel lethal power. The shell material was 58SiMn, 50SiMnVB or 40Cr, whereas the charge was RL-F. And the shell material was 58SiMn, whereas the charge was TNT. The shell rupture process and lethal power test were analyzed. The results show that, the lethal power of RL-F charge increase by 25%, 45%, 14% compared with the TNT charge, whereas the shell material was 58SiMn, 50SiMnVB, 40Cr. And then the guarantee range and lethal power can be improved by using the high explosive and changing shell material, whereas the projectile shape coefficient is invariable.

In order to find out the change rule of SPAD value in lettuce leaves and the rapid, non-destructive and more accurate detection method of chlorophyll content in lettuce leaves under intercropping mode, the effect of intercropping on SPAD value in lettuce leaves was studied and the correlation model between chlorophyll content and SPAD value was established. The results show that the SPAD value of lettuce leaves increases at first and then decreases slowly with the development of the days of aerosol culture, and intercropping has obvious advantage in the middle and late stages of aerosol culture. At the same time, the results show that the regression equations of chlorophyll a, chlorophyll b and total chlorophyll content with SPAD value are best fitted by power equation, exponential equation and power equation respectively, and the coefficients of determination are 0.8302,0.6719 and 0.8503 respectively. The models are verified. It is found that the predicted value and the measured value of chlorophyll a, chlorophyll b and total chlorophyll content have a good correlation, and there is no significant difference, which shows that the regression models have a good prediction effect on chlorophyll content. The results provide a theoretical basis for the effect of intercropping on SPAD value of lettuce leaves and provide a reference method for rapid, nondestructive and more accurate detection of chlorophyll content in lettuce leaves.

Based on the perspective of the integration of specialization and innovation, in order to improve students' innovative practical abilities, this paper innovates the talent cultivation mode of computer science and technology majors, proposes the "three carriers" co creation progressive talent cultivation mode, optimizes the curriculum system of specialization and innovation integration, scientific research and education projects, and scientific and technological innovation activities as carriers, and jointly cultivates students' innovative practical abilities at the hierarchical level of school enterprise and teacher-student collaboration. At the same time, from the curriculum system propose relevant strategies in terms of innovative practice platforms, diverse assessment standards for innovative talents, etc., to promote the cultivation of innovative applied talents in computer science and technology majors.

The curriculum is the basic basis and carrier of educational and teaching activities, and it is the core of the digital transformation of education. With the continuous deep integration of digital technology in the curriculum and teaching, how to effectively deal with the impact and influence of the continuous innovation and breakthrough of digital technology on the curriculum and teaching, and better promote students’ inquiry and personalized learning has become an urgent problem in front of us. This paper focuses on the digital transformation of the background of the curriculum teaching issues, aviation maintenance management course as an example to carry out analysis and research, which can promote the deep integration of digital technology and curriculum teaching to provide reference and reference..

The OBE concept is result oriented education, focusing on whether students have obtained phased research results and enhancing their sense of learning acquisition. Once proposed, it has been deeply recognized by engineering researchers and widely studied. This teaching model is consistent with the ancient teaching philosophy of "unity of knowledge and action, and application of learning" in China. Exploring the design practice of professional courses based on the Chinese style OBE teaching mode, and exploring the helicopter power supply system course from the teaching mode, practical links, and evaluation assessment, in order to improve students’ learning effectiveness and lay a solid foundation for future job qualifications.

From the perspective of the host country, this paper studies the impact of the construction of overseas economic and trade cooperation zones on the innovation level of countries along “the Belt and Road” based on the national level panel data of 42 countries from 2003 to 2019. The research finds that the construction of cooperation zones has significantly improved the innovation level of countries along “the Belt and Road”, and the national cooperation zones passing the assessment of the Ministry of Commerce have a stronger role in improving the innovation level of the host country. This conclusion is still valid after a variety of robustness tests. The conclusions of this study provide empirical evidence that the overseas economic and trade cooperation zone is a win-win “China” model, and has important reference significance for China to improve the function of the opening platform through the cooperation zone and promote the high-quality development of the “the Belt and Road”.

The purpose of this article is to investigate the effect of different bending angles and traction directions of the traction arm on the stability of the titanium plate for bone-anchored maxillary protraction (BAMP). The titanium plate models with different bending angles of the upper and lower jaws were modelled in three dimensions, where the bending angles were 90°, 120°, 135°, 150°, 180° and recorded as U1-U5 and L1-L5 respectively. Finite element analysis was performed on the titanium plates with different structural parameters to complete the structural design selection study of the titanium plates. The displacement limit was defined and different angular tensile forces were applied to record the equivalent stress and displacement of the titanium plates under each working condition. A total of 120 sets of orthogonal simulation tests were designed, which showed that the stress values at U2, U3 and U4 are smaller at traction angles of 135° (66.152 MPa), 155° (59.015 MPa) and 175° (55.589 MPa) respectively. The displacement is correspondingly smaller at tensile angles of 135° (0.0073 mm), 150° (0.0056 mm) and 160° (0.0058 mm). L2 has the smallest stress value (50.491 MPa) and displacement (0.0062 mm) at a tension angle of 120°. Therefore, it is recommended to design a titanium plate with a mandibular traction arm bending angle of 120° for BAMP, and the traction arm bending angle of the maxillary titanium plate can be flexibly designed according to the clinical traction direction.

The real estate bubble has always been the concern of the government and scholars. Especially at the time when the COVID-19 problem is serious and the economy continues to be depressed, our research on the real estate bubble is of great significance. Based on the definition of real estate bubble by different scholars, the analysis of past real estate bubble cases, and the existing literature review, this paper analyzes the current bubble’s situation of China’s real estate, which has become a really serious years ago, and summarizes the possible causes of real estate bubble such as excess liquidity, the overheating economy some sort of bureaucracy problem and so on. Finally, this paper briefly describes the causes of Japan’s financial crisis in the 1990s as well as the government’s solutions, then analyze how China will deal with the real estate bubble at this stage and give out some possible options like methods through inflation legislation or speculation etc.

The stability of loess subgrade is affected by many factors. Freeze-thaw cycles are a common factor that causes the strength of loess subgrades to be damaged. In order to study the influence of freezethaw cycles on the stability of loess subgrades, reveal the mechanism of freeze-thaw cycles on the strength of loess subgrades. It is necessary to sample the loess soil samples in this area, and perform compaction test, freeze-thaw cycle test, unconfined compression test and electron microscope scanning test on the soil sample to analyze the influence of freeze-thaw cycle on the strength and microstructure of loess soil. . In this way, the potential relationship between the microstructure and the strength of the soil can be obtained. The results found that the freeze-thaw cycle of loess led to a trend of first increase and then decrease in soil strength. The microstructure showed a trend of smaller soil particles and increased soil voids. The potential relationship between the microstructure and the strength of the soil was analyzed. It explains the conclusion that the strength of the soil first increases and then decreases.

The determination of allowable differential settlement in bridge transition is a key problem to prevent vehicle jump at bridge head, but there are few theoretical research achievements in this aspect atroduction home and abroad. In this paper, four different structures of the road surface of The Sanyangchuan tunnel and the lead project are studied. The allowable differential settlement of asphalt pavement is calculated by asphalt pavement-layer system, and the allowable differential settlement is calculated by Ladan Lasse transform.

To improve the enthusiasm of captive power plants to participate in power generation rights trading, this paper proposes a method of power generation rights trading for captive power plants and wind power before the day considering carbon emission rights and allowance gains. Firstly, based on the cooperative game, a power generation rights trading model to maximize the net gain of the cooperative alliance is established, followed by determining the gain of each subject through the Shapley value method. Finally, the model is solved by the solver and the arithmetic example verifies the correctness of the model.

Based on the theory of group dynamics, the environmental art design workshop enables the team members to form a new team value standard under the friendly cooperation by giving full play to the dynamic characteristics of the team, and then change and optimize the design concept. In the environment of intelligent design, through timely adjustment and optimization of the design concept, so as to dissolve the traditional rigid thinking, reconstruct a new environmental art design scheme. Through the analysis of the practical value of the environmental art design workshop based on the computer virtual reality technology, the concrete practical scheme is explored.

This paper presents a feasibility study on the application of delivery drones in Yang Liu Zhuang. In order to make the cost calculation convincing, the article realistically simulates the delivery scenario of Yang Liu Zhuang during the epidemic, and then analyzes its transportation cost in depth, and finally concludes that using drones to partially replace traditional delivery in Yang Liu Zhuang can save costs and improve logistics efficiency. However, at present, the delivery by express drones is mainly limited by their own load weight, and they cannot deliver medium and large goods.

MXenes were outstanding materials for aqueous environment remediation, MXenes with a high capacity for radionuclides uranium (U(VI)) remains a challenge. In this study, a noval polydopamine functionalized MXene (defined as MXene@PDA) was successfully synthesised and evaluated for the aggregation towards U(VI) from wastewater. Versatile PDA owing functional groups provided more sites to capture contaminant ions. The mechanism research with MXene@PDA was explored by batch experiments toghther with the XPS analyses. The results revealed MXene@PDA with abundant functional groups exhibited superior elimination ability (90.4 mg/g) at pH = 5.0. The mechanism of U(VI) on MXene@PDA was primarily ascribed to the surface complexation force between the UO22+ and -OH, NH2 groups. The PDA modification of MXene materials are proved to be excellent materials for the extraction of radionuclides in the aqueous solution.

With the development of society, crowds in public buildings are dense, and the subsequent spread of diseases in places with high population density has attracted widespread attention. In the real situation, the spread of the disease has its complexity, such as the influence of factors such as the movement of people and the intervention of external measures, so it is necessary to further refine the description of the process of infection transmission. Based on the social force model, this article focuses on the impact of microscopic crowd movement in public places on the dynamics of infection. Taking a typical pedestrian exit process in a subway station as an example, we numerically simulated the infection problem among small-scale people in public places, observed the impact of pedestrian movement characteristics on infection transmission, put forward corresponding prevention and control measures, and verified the effectiveness of the measures.

Lonicerae japonicae Flos is a traditional Chinese medicine that has the effect is used for clearing away heat and detoxification. When stored improperly, this medicine is susceptible to mold growth, causing fungal contamination, reducing its safety and clinical efficacy. In order to understand the fungal contamination of Lonicerae japonicae Flos, we utilized the Illumina NovaSeq6000 platform to characterize fungal communities associated with five moldy Lonicerae japonicae Flos samples from warehouses in China via the sequencing of fungal internal transcribed spacer 2 regions. These analyses led us to identify 3 phyla, 5 classes, 7 orders, 9 families, 13 genera, and 20 species of fungi in these samples. Of these, Ascomycota was the dominant phylum, while Cysticomycetes, Ascomycetes, and Staphylococci were relatively dominant at the class level, and the most prevalent genera were Aspergillus, Penicillium, Xanthomonas, Microcystis, Talaromyces, and Erysiphe with relative abundance values of 79%, 21%, 94%, 100%, and 98%. In summary, in the present study we conducted the ITS-based comprehensive characterization of fungal communities associated with Lonicerae japonicae Flos for the first time. This approach aims to facilitate the early detection of fungal contamination in Lonicerae japonicae Flos, providing a theoretical basis for the study of anti-mold technologies.

Nowadays, under the dual pressure of fossil energy shortage and ecological environmental pollution, new energy vehicles have flourished in our country by virtue of their clean and low noise advantages. But correspondingly, the grid connection of electric vehicles will also bring many problems. Therefore, this article attempts to explore the operating mode of electric vehicles and its impact on the consumption of renewable energy, so as to provide reasonable planning of charging facilities and improve the top-level design of the grid.

The use of new energy to generate electricity in the power system and the large-scale increase of new energy grid connection has led to increasingly insufficient power system regulation, in order to solve this problem, the peak shaving auxiliary service market came into being.This article comprehensively analyzes the factors those affect the market clearing price of power peak shaving auxiliary services: The macro factors include energy economic policies (renewable energy and electric energy substitution), technological innovation, market operation rules, etc., and the micro factors include the quotation and demand of thermal power plants and wind power generation.The power peak shaving auxiliary service market is an important part of the power market. Its appearance makes the grid operation safer and more reliable, and the reasonable fluctuation of clearing prices and total market costs reflects the market’s sensitivity to peak shaving resource demand.This paper uses the BP neural network model to select 31 consecutive days of peak shaving auxiliary service clearing price data in North China for prediction.

In the structural design of light wood structures in recent years, people have paid more and more attention to estimating the lateral deformation of buildings. In order to better estimate the lateral deformation of the balsa shear wall without hold-downs, this paper carried out the lateral loading test of the wood shear wall and the monotonic loading test of the nail joint. A formula for lateral load-deformation of nail nodes suitable for engineering entities is proposed. A method for calculating the lateral deformation of wood shear walls without hold-downs is provided. The method is based on the formula for lateral deformation of light-weight timber structure shear walls in China's Code for Design of Timber Structures (GB50005–2017) [1]. This method complements the domestic wood structure regulations very well.

In order to promote the coordination of various forms of energy resources such as electric energy, heat energy, and cold energy, and to achieve complementary and efficient use of different energy sources, a method for optimizing the allocation of the capacity of a regional comprehensive energy system that takes into account the trading of electric and thermal energy is proposed. The energy interaction costs of the system and the grid heat network are included in the total cost. The optimization goal is a multi-objective function that comprehensively considers system economics, environmental protection, reliability, and interactive power fluctuations. Based on the energy hub, the capacity of each energy supply equipment in the area is optimized. Time-sharing electricity price and typical daily system economic operation are solved by genetic algorithm. Finally, an example of a park is used to verify its effectiveness. The results show that the proposed method can effectively reduce the system cost and reasonably avoid the limitations caused by the single decision factors in the system planning stage, thus providing a reference for the actual system planning and design.

In order to accurately measure and evaluate the quality of the roller profile of the ultra-long flexible blade bearing, an error evaluation model is established for the arc segment and the straight segment of the roller based on the least square method, and then an overall quality evaluation model is proposed based on these two error models. Through the simulation of a standard wind turbine cylindrical roller bearing, it is found that the quality evaluation model established in this work can effectively measure and evaluate the contour line of the wind turbine bearing’s roller. The overall absolute error is 0.0319 mm, which is consistent with the set random error. The overall quality evaluation model is also valid for other types of bearings commonly used in the wind turbine, which include arc and straight segments, and can be used to evaluate the error quality of the roller profile of wind turbine bearings.

Integrated energy system (IES) is an effective way to realize the efficient utilization of energy. Under the deregulated electricity market, IES operator gains profits by providing customers with energy service, including electricity, heat or cooling energy. With the deepening of market reform, higher penetration rate of renewable energy, economic risks embed in the IES. Based on this, an optimal scheduling model of regional IES considering uncertainties is proposed, aiming at maximizing the profits. Scenario analysis method has been adopted to model the uncertainties: Markov-Chain-Monte-Carlo (MCMC) sampling method, which has a better performance in fitting the probability distribution, is utilized to generate scenarios; K-means clustering method is applied to narrow down the sampling sets. By replacing the parameters in the deterministic model with the sampling sets, a series of optimal results can be achieved. The case study shows that the cooling storage tank can improve the economic benefits about 4.97% by converting electricity to cooling energy at lower price period and releasing energy at peak hours. Besides, through the proposed optimization model, operators can have a straight understanding of the venture brought by the uncertainties and a more reliable scheduling result is formed for reference.

Cd contamination of sediments poses a serious threat to the global environment human health. A detail and comprehensive investigation of cadmium (Cd) pollution in the surface sediments of Dongjiaogou River was carried out. Concentration analysis of Cd in various depth and locations was conducted based on 82 samples collected from the river surface sediments where the sediments is up to 353 mg/kg. Subsequently, stabilization/solidification (S/S) method, an effective method of improving the engineering properties of sediments and encapsulating contaminants, was applied in these sediments. According to the results, the Cd pollutant was treated effectively by S/S method, which verifies the feasibility to mitigate the hazards caused by Cd in those sediments from the river. Furthermore, the S/S sediments are favorable as filling material in the road for both recycling and construction.