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A novel N, N-(4-amino phenyl maleimide) diglycidyl amine (APMDGA) was synthesized from maleic anhydride, 4-nitroaniline, and epichlorohydrin by a few-step reactions via intermediate products N-(4-nitrophenyl)maleimide and N-(4-aminophenyl)maleimide. The chemical structure of APMDGA is confirmed by 1H-NMR,...

With the increasing of wind turbine unit capacity, heat load of thermal dissipation components of the unit increase greatly. In order to make the unit long-term stably and efficiency operation, the research and development of cooling system with high efficiency and low energy consumption become particularly...

To solve problems of uneven growth of sprouts due to unevenness of irrigation in sprout production, severe waste of water resources and poor marketability, a sprout tide-type irrigation device has been designed. This device can guarantee sprouts demand for moisture, enable even growth of sprouts and...

Formerly Regional College in Gansu is mostly normal colleges and it is influenced by the traditional influence, widespread service area economy applied lack of professionals, small organizations, teachers' active participation is not high, Local Colleges succeed in Gansu universities bushes fierce competition...

In recent years, mobile audio industry has undergone rapid development and the competition among platforms within the industry has become more and more fierce. Policy changes, technological developments, constant changes in users' demand and capital flows make entities in the mobile audio industry always...

Exercise is a human need as a refresher amid a routine of daily activities and fitness in the hope that the body will stay healthy and fit. Various types of sports activities dominated during the boom such as tournaments, competitions, and leagues both at the national and international levels, especially...

To improve the anti-rollover capability of vehicles under limit conditions, the rollover stability of vehicles in high speed steering was studied; a vehicle dynamics model was built with the software of Carsim. Based on the variable threshold method of yaw rate, an anti-rollover controller was designed,...

The concept of the diffusion of responsibility has been well studied with sufficient empirical attention. However, there is no literature review on this topic currently, so this review aimed to examine the existed literature on the topic of the diffusion of responsibility. Google Scholar and Baidu Scholar...

With the accelerated expansion of mobile Internet and industrial information technology applications, exploring the efficient path of intelligent urban transformation has become an important issue for urban managers and academia alike. Significant progress has been made in constructing smart cities in...

In this paper, we study the problem of solar shadow positioning in the National Mathematical Modeling Contest in 2015, A.This paper established mathematical model of the change in length of the shadow, analysis of the length of the shadow of each parameter, and used to establish the model of painting...

The purpose of this study was to test the mediating effect of creativity in the influence of moral awareness and ethical behavior on product innovation among SMEs. We collected data using online google form and 100 SME’s owners in Greater Jakarta were participated in this survey. Data analysis in this...

Objective: to solve cultivation equipment problems for industrial cultivation of sprout, sprout aeroponics equipment that features vertical cultivation, aeroponics, ozone sterilization, water magnetization, automatic control technology and etc., is designed in this paper. Methods: SolidWorks 3D design...

The paper aims at the problem of the optimal investment model of Foundation Goodgrant in the international mathematical modeling competition of the United States in 2016.This paper constructs a model to calculate the ROI and determine the investment strategy .so,we builds a model solving investment amount...

Transgender people have undergone unjust treatments due to the traditional social judgment standards of the male and the female as a minor social group, which won a lot of attention in the years of the internet. This literature review focuses on the negative impact of social media on transgender people’s...

The mechanical wave is emphases and difficult content in physical university course. Using the plane simple harmonic wave as an example, the physical meaning of the wave equation is clarified; the phase difference between the two particles in medium of coherent wave sources is also discussed. Analyzed...

Influenced by the “black swan incident” Covid-19, huge changes have occurred in the global financial market. Based on Kenneth. French-Data Library, this paper uses multiple linear regression to analyze the statistical data of the U.S. stock financial industry before and during Covid-19, which is used...

Power transformers are key components in the stable operation of electric power system. Reasonable arrangements of maintenance strategy according to transformers’ working condition can decrease the loss lead by transformers’ faults. The dissolved gas analysis (DGA) is the widest technique used in transformers’...

Large-sized flexible structure is widely used in industrial production areas, such as aircrafts, automobiles, ships and so on. There will be dynamic deformation in working process which will affect the normal use of structure carrier. In addition, current deformation measurement methods have certain...

In this study, four laboratory-scale horizontal subsurface flow constructed wetlands (HSSF CWs) were designed to reveal the effects of cattail fermentation broth and Typha latifolia on nitrate removal. The results showed that both the addition of cattail fermentation broth and the presence of Typha latifolia...

General Secretary Xi Jinping's important discourse on revolutionary culture profoundly reveals the connotative essence, significance and utilization strategy of revolutionary culture. He emphasized that revolutionary culture not only stems from social existence, but also is the crystallization of...

Traceable system, which is as an effective way to control the quality and safety of agricultural products receives increasingly attention globally. Using the poultry as the research object, the paper builds a safety production management and quality trace system in order to achieve the goal of quality...

Based on the fact that aggregate surface features have a great effect on the performance of concrete, a method for improving concrete performance by modifying aggregate surface features was proposed. Specifically, with aggregates immersed into concrete interfacial agent (CIA) suspension to increase the...

This article has analyzed the value of the comparative studies on visual way of European landscape and Chinese landscape. It points out that the European landscape and Chinese landscape have their own views and the intrinsic value as to independent systems, and they have the status, role and contribution...

Most active noise control (ANC) algorithms require the identification of the secondary path, thus suffer from large complexity, increased residual noise power and algorithm divergence. In this paper, we propose a novel ANC algorithm without secondary path identification based on Kalman filter, referred...

The integrity zone is the concept of organizing quality public services. Every service provider is currently competing to get the title as an integrity zone area. One of the efforts to support the implementation is through the implementation of an electronic scholarship government system. The Faculty...

In this study, four Theaceae tree species were processed by setting up two hydrogen fluoride concentration gradient (including controls), the actual quantum yield (Y (II)) of PSII, the relative electron transport rate (ETR), non-regulatory energy dissipation quantum yield (Y(NO)), regulatory energy dissipation...

Augmented reality technology is a new technology developed on the basis of virtual reality technology, which is a new development of virtual reality technology. The key of augmented reality technology is to integrate the 3D virtual objects generated by computer with the objects in the real scene, so...

The structural failure of storage tank under internal overpressure mainly have two forms: uplift deformation and corner weld avulsion. And tank bottom is a sensitive position. A practical case of tank bottom deformation was detected in 2014. Based on this practical engineering case, tank bottom structure...

Based on the classical magnetic structure of the vehicle MRF damper, this paper mainly focuses on the influence of magnetic circuit structure and key parameters on response time of MRF damper, and put forward the optimization method of magnetic circuit structure, which adopted the double stage magnetic...

The use of segmental assembled bridges offers significant benefits in terms of construction efficiency and convenience. Nonetheless, it is crucial to address the issue of lower mechanical properties such as the stiffness, strength, and ductility in the joints when compared to the adjacent sections. This...

In this paper, an improved bacteria foraging optimization algorithm based on different constraint conditions is proposed to solve the vehicle routing problem with pickup and delivery (VRPPD). At first, the mathematical model is established aiming at minimizing the dispatching time and the total cost....

The NSR navigation will have significant impacts on global maritime transport pattern and Sino-European trade. Based on the analysis of impact mechanism of NSR navigation on maritime trade, this paper establishes a gravity model and uses regression analysis to measure the trade potential between China...

This paper proposed a new type of discrete random contention system based on the literature [1], researched it using the average cycle method, then get the formula of the systemic throughput for the new random access protocol by building mathematical modeling; but the uncertainty of random multiple access...

In order to reveal the machining mechanism of the inter electrode gap during ultrasonic assisted electrical discharge machining, the relationship between the distribution of the flow field and bubble motion was studied. The three-dimensional model of deep hole machining was established firstly using...

The relationship between the American and Chinese economies facilitates the creation of over 25 million employment opportunities in the United States. This relationship is not limited to specific sectors, but certain sectors thrive compared to others. It is crucial to understand how the relationship...

For interference problems between multiple readers in the RFID (radio frequency identification) system of the Internet of Things, an anti-collision algorithm of RFID reader (CAAC) based on cultural optimization is proposed. The reader starts hierarchical clustering in the RFID network, by dynamically...

The presence of public services is to be able to achieve goals, namely, serving the rights of the general public and meeting the needs of the community for the necessary goods, services and administrative services. Therefore, it is the responsibility of the government to be able to create quality public...

The top-down construction method has complex construction organization and many courses. Whether on theory or practice, quite a lot of problems need to be solved. In this paper, researchers used the finite element program Midas GTS to simulate THE foundation pit excavation of subway station in Hefei...

With the development of China's science and technology and large-scale construction of infrastructure, put forward higher requirements to the highway pavement performance, modified asphalt is necessary. Aging is a problem of modified asphalt in use process cannot be ignored, which directly affects the...

Aiming at the problem that the existing semi-active suspension system needs external power supply, the electromagnetic energy recovery device for semi-active suspension is proposed. Based on the analysis of the structure and working principle of the energy recovery device, the energy recovery model and...

In factory production of sprouts, the layer-rack vertical cultivation devices are usually used and the sprinkling irrigation adopted, which is a severe waste of water resources. Besides, for lack of sunshine, growth of sprouts is hampered. To solve this problem, a sprout ultrasonic aeroponic cultivation...

Since reform and opening-up, our country's higher education has achieved rapid development. China's higher education has played an important role in improving the quality of the population in China and to provide the economic development in our country. In this article, the development of Chinese higher...

A collaborative evolutionary optimization method for the layout of hydraulic manifold blocks was presented according to its structure feature, an optimization design mathematic model of manifold blocks in the spatial layout was established, and it was solved based on the ant colony algorithm. Special...

Sprouts need substantive water in the growth process, which will cause a high manual irrigation cost. Besides, manual irrigation is usually uneven. To solve this problem, a rotary sprout vertical cultivation device is designed to realize automatic irrigation and guarantee evenness of irrigation during...

Tracer study which is a form of survey to LSP Unesa which organizes competency certificates that have strategic value for the development of higher education. The results of this tracer study activity can be used to evaluate the LSP that provides competency certificates to students. To find out the competencies...

To obtain high-quality output voltage, a multi-loop control for UPS inverter is proposed. On the basis of double closed-loop control, repetitive control is introduced to improve total harmonic distortion (THD) of the output voltage. Also, RMS control is introduced to increase steady-state accuracy of...

as the foundation and critical part of the free Space optical communication, the electro-optical tracking system is a typical nonlinear system. However, the angular accuracy should be better than a few micro-radians to meet the requirement of the communication link construction between two terminals....

in contrast with Chinese current teaching method with the center of teachers, the foreign teaching with the center of students is a kind of teaching method with more science and more accept by students. The article explains the new teaching method with the tool of teaching and the center of students...

The teacher guarantee condition of people-benefited private kindergartens is an important criterion to measure the quality of kindergarten running. Taking teachers in two people-benefited private kindergartens in Wuhan as the research object, this paper investigates the teacher guarantee condition under...

In the highway design and construction, it is common to calculate the middle pile point coordinates. Application the data calculation, data processing function and function library of Excel software establish worksheet calculation model of route transverse. Then using Excel VBA program achieves automatic...