Macular pigment(MP)is a crucial pigment in the macular region.It plays an important role in filtering blue light,and exhibits anti-inflammatory and antioxidant properties.Macular pigment optical density(MPOD)is a key ...Macular pigment(MP)is a crucial pigment in the macular region.It plays an important role in filtering blue light,and exhibits anti-inflammatory and antioxidant properties.Macular pigment optical density(MPOD)is a key indicator for assessing the density of MP in the macular area and is closely associated with eye diseases,including age-related macular degeneration,diabetic retinopathy,and glaucoma.This review aims to explore the clinical significance of MPOD and its research value in ophthalmology and other medical fields.It summarizes the current MPOD measurement techniques,categorizing them into two main types(in vivo and in vitro),and discusses their respective advantages and limitations.Additionally,given the advancements in artificial intelligence(AI)and deep-learning technologies that offer new opportunities for improving MPOD assessment,this review analyzes the significant potential and future prospects of AI-based fundus image analysis in MPOD measurement.The goal of AI-based analysis is to provide faster and more accurate detection methods,thereby promoting further research and new clinical applications of MPOD in the field of ophthalmology.展开更多
This paper introduces the development of technology and its measures for city power network in China, looks forward to the prospect of development in forthcoming decade and the technical principles to be adopted.
The work of quantitative studying the effect of technological progress on economic growth, being of great complexity and far-reaching significance, has become a quite popular research topic in the world. In recent yea...The work of quantitative studying the effect of technological progress on economic growth, being of great complexity and far-reaching significance, has become a quite popular research topic in the world. In recent years there are a large number of scientists who are engaged in this research both at home and abroad.展开更多
With the rapid development of China's economy, the times are also progressing. The continuous influx of various trades and industries has also promoted the rapid development of industry. Then if we want to develop...With the rapid development of China's economy, the times are also progressing. The continuous influx of various trades and industries has also promoted the rapid development of industry. Then if we want to develop economy, we must enlarge the scale of the enterprise. The development of the enterprise is mainly to enlarge its production scale and produce more economic benefits. The expansion of the scale requires the expansion of the factory, which cannot be separated from the development of various engineering projects. No matter what kind of project requires precise measurement during its construction, the relevant market supervision department should strengthen the supervision and management of the project, strictly require the technical level of its engineering measurement, confirm whether its engineering measurement technology meets the standard, and grasp the management from the policy. In addition, the enterprise itself should also do a good job of self-inspection, let engineering surveyors with sufficient experience participate in the construction, strengthen the accuracy of engineering survey, avoid some possible measurement errors, keep pace with the times, and continuously improve the engineering survey methods and measurement techniques to ensure the construction quality of the project, which is also of some important significance to the construction and management of the enterprise.展开更多
I. Increase in Human Activity and Occurrence of Geological Disasters ＂A geological disaster is a natural disaster that happens in a geo- logical environment. It is a geological effect （phenomenon） caused or in- flu...I. Increase in Human Activity and Occurrence of Geological Disasters ＂A geological disaster is a natural disaster that happens in a geo- logical environment. It is a geological effect （phenomenon） caused or in- fluenced by Nature and （or） human factors that leads to losses to human life, property and the environment.TM Based on their cause, geological disasters can be divided into natural geological and artificial geological disasters. Natural geological disas- ters include those caused by natural effects. These include typhoons, rain- fall, melting snow and earthquakes,展开更多
For electronic piezo gauge used for testing gun chamber pressure, its internal miniature pulse-powered photoelectric invert switch cannot often be powered up normally. To solve this problem, a test system for invert s...For electronic piezo gauge used for testing gun chamber pressure, its internal miniature pulse-powered photoelectric invert switch cannot often be powered up normally. To solve this problem, a test system for invert switch is presented to verify the reliability of the invert switch. The test system uses complex programmable logic device （CPLD） to control data acquisition of A/D converter and data storage of external flash memory, and then transmits the acquired data to a computer for data analysis and processing. The test system can provide the required sampling frequency of the signal in high temperature, normal temperature and low temperature environments, and the reliability of the invert switch can be verified according to the signal parameters. The results show that the test system has high precision and the tested invert switch has low power consumption and high reliability.展开更多
Recently, the study on one-dimensional thermoelectric materials is getting more and more attention. For those one-dimensional thermoelectric materials with nanowire array structure fabricated with alumina film as temp...Recently, the study on one-dimensional thermoelectric materials is getting more and more attention. For those one-dimensional thermoelectric materials with nanowire array structure fabricated with alumina film as template, its thickness is often in the range of 10 to several tens micrometers, and the conventional measurement cannot be used. The key difficulties of the thermoelectric performance measurement for nanowire array materials include two aspects: 1) How to heat the two sides of the specimen uniformly and keep the temperature difference constantly at the same time; 2) How to measure the temperature of the two sides of the specimen with the thickness of 10 to several tens micrometers. A new type heating and temperature measuring technology has been used, and it can be simply described as liquid heating and separate temperature measurement. According to this principle, a thermoelectric performance measurement system has been established.展开更多
In this paper, we present simultaneous multiple pollutant gases （CO2, CO, and NO） measurements by using the non-dispersive infrared （NDIR） technique. A cross-correlation correction method is proposed and used to c...In this paper, we present simultaneous multiple pollutant gases （CO2, CO, and NO） measurements by using the non-dispersive infrared （NDIR） technique. A cross-correlation correction method is proposed and used to correct the cross-interferences among the target gases. The calculation of calibration curves is based on least-square fittings with third-order polynomials, and the interference functions are approximated by linear curves. The pure absorbance of each gas is obtained by solving three simultaneous equations using the fitted interference functions. Through the interference correction, the signal created at each filter channel only depends on the absorption of the intended gas. Gas mixture samples with different concentrations of CO2, CO, and NO are pumped into the sample cell for analysis. The results show that the measurement error of each gas is less than 4.5%.展开更多
The target of the text is to scientifically appraise dynamic development of surface deformation in subsidence area and its influence on groundwork stability of natural pipe and then adopt some technological measures t...The target of the text is to scientifically appraise dynamic development of surface deformation in subsidence area and its influence on groundwork stability of natural pipe and then adopt some technological measures to ensure safe circulation of natural pipeline. Analysed the influence on natural pipeline from coal mining subsidence in the way of pipeline grade variation, vertical curve variation, transverse deformation, horizontal pull and compression deformation and pipe stress variation etc., and described detailed surface subsidence product and its used time among initial phase, active phase and decline phase in the course of surface movement deformation time. In the context of considering surface subsidence that doesn＇t reach basic latter end and residual subsidence quantity, the text confirmed the calculation method of residual deformation in surface subsidence area, and gave the technological measures about building natural gas pipeline in subsidence area finally.展开更多
In this paper, to meet the needs of studying work of dynamic mechanical properties of welded joint, the dynamic mechanical properties of welded joint were measured by means of SHPB(Split Hopkinson Pressure Bar).The dy...In this paper, to meet the needs of studying work of dynamic mechanical properties of welded joint, the dynamic mechanical properties of welded joint were measured by means of SHPB(Split Hopkinson Pressure Bar).The dynamic mechanical property's curves of every part of welded joint were obtained. For studying the dynamic behavior of mechanical heterogeneity of welded joint, important data were offered. The method of test creates a new way of studying dynamic mechanical properties of welded joint.展开更多
This paper describes the analysis and design of an assistive device for elderly people under development at the EgyptJapan University of Science and Technology（E-JUST） named E-JUST assistive device（EJAD）.Several e...This paper describes the analysis and design of an assistive device for elderly people under development at the EgyptJapan University of Science and Technology（E-JUST） named E-JUST assistive device（EJAD）.Several experiments were carried out using a motion capture system（VICON） and inertial sensors to identify the human posture during the sit-to-stand motion.The EJAD uses only two inertial measurement units（IMUs） fused through an adaptive neuro-fuzzy inference systems（ANFIS） algorithm to imitate the real motion of the caregiver.The EJAD consists of two main parts,a robot arm and an active walker.The robot arm is a 2-degree-of-freedom（2-DOF） planar manipulator.In addition,a back support with a passive joint is used to support the patient s back.The IMUs on the leg and trunk of the patient are used to compensate for and adapt to the EJAD system motion depending on the obtained patient posture.The ANFIS algorithm is used to train the fuzzy system that converts the IMUs signals to the right posture of the patient.A control scheme is proposed to control the system motion based on practical measurements taken from the experiments.A computer simulation showed a relatively good performance of the EJAD in assisting the patient.展开更多
A measuring system for high-speed hydrogen ice pellet was introduced in this paper and the photographing of flying pellet taken therein. With the system, a pellet (minimum size of φ 0.3 mm) velocity (ranging from 50 ...A measuring system for high-speed hydrogen ice pellet was introduced in this paper and the photographing of flying pellet taken therein. With the system, a pellet (minimum size of φ 0.3 mm) velocity (ranging from 50 m/s to 2500 m/s) can be measured in the HL-1M tokamak fueling experiments. By analyzing photographs and the conditions of frozen pellets (including gas supply, gas replenishment, temperature controlling etc), the pellet-freezing technology is summarized in the paper.展开更多
Aiming at the problem that the lattice feature exceeds the view field of the scanning electron microscope(SEM)measuring system,a new lattice measuring method is proposed based on integral imaging technology.When the s...Aiming at the problem that the lattice feature exceeds the view field of the scanning electron microscope(SEM)measuring system,a new lattice measuring method is proposed based on integral imaging technology.When the system works,the SEM measuring system is equivalent to an integral image acquisition system.Firstly,a lattice measuring method is researched based on integral imaging theory.Secondly,the system parameters are calibrated by the VLSI lattice standard.Finally,the value of the lattice standard to be tested is determined based on the calibration parameters and the lattice measuring algorithm.The experimental results show that,compared with the traditional electron microscope measurement method,the relative error of the measured value of the algorithm is maintained within 0.2%,with the same level of measurement accuracy,but it expands the field of view of the electron microscope measurement system,which is suitable for the measurement of samples under high magnification.展开更多
The thesis analyzes risk factors of enterprise＇s technology innovation, adopts the undetermined measuring model to evaluate technology innovation risk and testifies it through an example.
In order to further adapt to the task requirements for rapid testing and high-density launches,the LM-5 series of rocket boosters have adopted an automated acquisition and measurement process for key parameters such a...In order to further adapt to the task requirements for rapid testing and high-density launches,the LM-5 series of rocket boosters have adopted an automated acquisition and measurement process for key parameters such as the weight and centroid of the launch vehicle.A fully automatic rapid measurement technology for the weight characteristics of the rocket,consisting of a measurement system,a control system,an execution system,and a data processing system,has been developed and incorporated.This does not just achieve the adjustment of the overall assembly attitude of the rocket body and the measurement of the center of mass,but also greatly reduces the workload in the traditional measurement operations such as for assembly erection and rail transfer.Thus improving the general convenience,while greatly improving the reliability and measurement accuracy of product installation,which further promotes the popularization of an intelligent measurement technology application.展开更多
Measuring the floor area of a building is one of the most important jobs of real estate workers. At the same time, this job provides buyers with the real estate information they need. Real estate information is mainly...Measuring the floor area of a building is one of the most important jobs of real estate workers. At the same time, this job provides buyers with the real estate information they need. Real estate information is mainly divided into the following categories: distribution area, public area and area of the building itself. In order to make real estate information more accurate and real-time, we have improved the requirements and standards for timeliness and standardization of real estate investigation. This paper analyzes some problems existing in the measurement of real estate work and puts forward effective solutions to realize the long-term development of the real estate industry in our country.展开更多
The project did not move the survey first, in the engineering construction, the survey has an important position. Because of the complexity of the construction environment of water conservancy and hydropower projects,...The project did not move the survey first, in the engineering construction, the survey has an important position. Because of the complexity of the construction environment of water conservancy and hydropower projects, the measurement work is particularly important. By adopting the relevant measurement technology to measure, it can effectively ensure the efficient development of water conservancy and hydropower projects. In this paper, the measurement technology of water conservancy and hydropower engineering is discussed.展开更多
The traditional real estate house registration survey mainly uses the technologies such as total station, RTK field survey, etc. Although this kind of technology can also accurately complete the real estate surveying ...The traditional real estate house registration survey mainly uses the technologies such as total station, RTK field survey, etc. Although this kind of technology can also accurately complete the real estate surveying and mapping work, there are many problems such as small work area, high cost, difficulty in entering the house, etc., which seriously affect the efficiency of surveying and mapping work. Compared with the field measurement technology, the application of UAV tilt measurement technology in real estate surveying and mapping work has greatly improved the accuracy, timeliness and work efficiency of surveying and mapping work. However, in the large-scale graphic surveying and mapping work, the traditional UAV tilt measurement technology requires the field adjustment and painting of eaves and editing after correction, which also leads to the increase of production cost.展开更多
With the increase of complexity of road engineering, road engineering requires a large amount of data to support design, construction and demolition compensation. Traditional topographic maps are inefficient, and the ...With the increase of complexity of road engineering, road engineering requires a large amount of data to support design, construction and demolition compensation. Traditional topographic maps are inefficient, and the data cannot meet the needs of road engineering. With the development of science and technology, more and more high-tech methods are applied to topographic mapping. This paper discusses the working principle and advantages of UAV aerial survey technology and mobile surveying system in engineering surveying and mapping, and the main application direction of surveying and mapping technology in engineering surveying and mapping.展开更多
With the continuous and rapid development of society, the whole society has become more diversified and the competition among products has become more intense. In the market competition, many enterprises focus on how ...With the continuous and rapid development of society, the whole society has become more diversified and the competition among products has become more intense. In the market competition, many enterprises focus on how to occupy a larger share. Too much emphasis on the improvement of production efficiency leads to the serious neglect of the quality of many products, which seriously hinders the long-term development of enterprises. In order to do a good job in product production, the existing quality supervision must be continuously optimized and improved. Measurement and testing technology is very important in the market supervision and management. Taking Chengwu as an example, this paper analyzes the application value of this technology in the market supervision and management, and clarifies the relevant matters needing attention in the application of measurement and testing technology, hoping to provide some reference and inspiration for relevant workers.展开更多
基金Supported by Ganzhou Science and Technology Bureau“Science and Technology+Healthcare”Leading Talent Project(No.GZ2024YLJ020)Jiangxi Provincial Department of Science and Technology Key Research and Development Plan Projects(No.20203BBGL73133)Jiangxi Province“ShuangQian Plan”Innovation Talents Project(No.S2021CQKJ2297).
文摘Macular pigment(MP)is a crucial pigment in the macular region.It plays an important role in filtering blue light,and exhibits anti-inflammatory and antioxidant properties.Macular pigment optical density(MPOD)is a key indicator for assessing the density of MP in the macular area and is closely associated with eye diseases,including age-related macular degeneration,diabetic retinopathy,and glaucoma.This review aims to explore the clinical significance of MPOD and its research value in ophthalmology and other medical fields.It summarizes the current MPOD measurement techniques,categorizing them into two main types(in vivo and in vitro),and discusses their respective advantages and limitations.Additionally,given the advancements in artificial intelligence(AI)and deep-learning technologies that offer new opportunities for improving MPOD assessment,this review analyzes the significant potential and future prospects of AI-based fundus image analysis in MPOD measurement.The goal of AI-based analysis is to provide faster and more accurate detection methods,thereby promoting further research and new clinical applications of MPOD in the field of ophthalmology.
文摘This paper introduces the development of technology and its measures for city power network in China, looks forward to the prospect of development in forthcoming decade and the technical principles to be adopted.
文摘The work of quantitative studying the effect of technological progress on economic growth, being of great complexity and far-reaching significance, has become a quite popular research topic in the world. In recent years there are a large number of scientists who are engaged in this research both at home and abroad.
文摘With the rapid development of China's economy, the times are also progressing. The continuous influx of various trades and industries has also promoted the rapid development of industry. Then if we want to develop economy, we must enlarge the scale of the enterprise. The development of the enterprise is mainly to enlarge its production scale and produce more economic benefits. The expansion of the scale requires the expansion of the factory, which cannot be separated from the development of various engineering projects. No matter what kind of project requires precise measurement during its construction, the relevant market supervision department should strengthen the supervision and management of the project, strictly require the technical level of its engineering measurement, confirm whether its engineering measurement technology meets the standard, and grasp the management from the policy. In addition, the enterprise itself should also do a good job of self-inspection, let engineering surveyors with sufficient experience participate in the construction, strengthen the accuracy of engineering survey, avoid some possible measurement errors, keep pace with the times, and continuously improve the engineering survey methods and measurement techniques to ensure the construction quality of the project, which is also of some important significance to the construction and management of the enterprise.
文摘I. Increase in Human Activity and Occurrence of Geological Disasters ＂A geological disaster is a natural disaster that happens in a geo- logical environment. It is a geological effect （phenomenon） caused or in- fluenced by Nature and （or） human factors that leads to losses to human life, property and the environment.TM Based on their cause, geological disasters can be divided into natural geological and artificial geological disasters. Natural geological disas- ters include those caused by natural effects. These include typhoons, rain- fall, melting snow and earthquakes,
文摘For electronic piezo gauge used for testing gun chamber pressure, its internal miniature pulse-powered photoelectric invert switch cannot often be powered up normally. To solve this problem, a test system for invert switch is presented to verify the reliability of the invert switch. The test system uses complex programmable logic device （CPLD） to control data acquisition of A/D converter and data storage of external flash memory, and then transmits the acquired data to a computer for data analysis and processing. The test system can provide the required sampling frequency of the signal in high temperature, normal temperature and low temperature environments, and the reliability of the invert switch can be verified according to the signal parameters. The results show that the test system has high precision and the tested invert switch has low power consumption and high reliability.
文摘Recently, the study on one-dimensional thermoelectric materials is getting more and more attention. For those one-dimensional thermoelectric materials with nanowire array structure fabricated with alumina film as template, its thickness is often in the range of 10 to several tens micrometers, and the conventional measurement cannot be used. The key difficulties of the thermoelectric performance measurement for nanowire array materials include two aspects: 1) How to heat the two sides of the specimen uniformly and keep the temperature difference constantly at the same time; 2) How to measure the temperature of the two sides of the specimen with the thickness of 10 to several tens micrometers. A new type heating and temperature measuring technology has been used, and it can be simply described as liquid heating and separate temperature measurement. According to this principle, a thermoelectric performance measurement system has been established.
基金Project supported by the National High Technology Research and Development Program of China (Grant No. 2009AA063006)the National Natural Science Foundation of China (Grant No. 40805015)the Excellent Youth Scientific Foundation of Anhui Province, China (Grant No. 10040606Y28)
文摘In this paper, we present simultaneous multiple pollutant gases （CO2, CO, and NO） measurements by using the non-dispersive infrared （NDIR） technique. A cross-correlation correction method is proposed and used to correct the cross-interferences among the target gases. The calculation of calibration curves is based on least-square fittings with third-order polynomials, and the interference functions are approximated by linear curves. The pure absorbance of each gas is obtained by solving three simultaneous equations using the fitted interference functions. Through the interference correction, the signal created at each filter channel only depends on the absorption of the intended gas. Gas mixture samples with different concentrations of CO2, CO, and NO are pumped into the sample cell for analysis. The results show that the measurement error of each gas is less than 4.5%.
文摘The target of the text is to scientifically appraise dynamic development of surface deformation in subsidence area and its influence on groundwork stability of natural pipe and then adopt some technological measures to ensure safe circulation of natural pipeline. Analysed the influence on natural pipeline from coal mining subsidence in the way of pipeline grade variation, vertical curve variation, transverse deformation, horizontal pull and compression deformation and pipe stress variation etc., and described detailed surface subsidence product and its used time among initial phase, active phase and decline phase in the course of surface movement deformation time. In the context of considering surface subsidence that doesn＇t reach basic latter end and residual subsidence quantity, the text confirmed the calculation method of residual deformation in surface subsidence area, and gave the technological measures about building natural gas pipeline in subsidence area finally.
文摘In this paper, to meet the needs of studying work of dynamic mechanical properties of welded joint, the dynamic mechanical properties of welded joint were measured by means of SHPB(Split Hopkinson Pressure Bar).The dynamic mechanical property's curves of every part of welded joint were obtained. For studying the dynamic behavior of mechanical heterogeneity of welded joint, important data were offered. The method of test creates a new way of studying dynamic mechanical properties of welded joint.
基金supported in part by a scholarship provided by the Mission DepartmentMinistry of Higher Education of the Government of Egypt
文摘This paper describes the analysis and design of an assistive device for elderly people under development at the EgyptJapan University of Science and Technology（E-JUST） named E-JUST assistive device（EJAD）.Several experiments were carried out using a motion capture system（VICON） and inertial sensors to identify the human posture during the sit-to-stand motion.The EJAD uses only two inertial measurement units（IMUs） fused through an adaptive neuro-fuzzy inference systems（ANFIS） algorithm to imitate the real motion of the caregiver.The EJAD consists of two main parts,a robot arm and an active walker.The robot arm is a 2-degree-of-freedom（2-DOF） planar manipulator.In addition,a back support with a passive joint is used to support the patient s back.The IMUs on the leg and trunk of the patient are used to compensate for and adapt to the EJAD system motion depending on the obtained patient posture.The ANFIS algorithm is used to train the fuzzy system that converts the IMUs signals to the right posture of the patient.A control scheme is proposed to control the system motion based on practical measurements taken from the experiments.A computer simulation showed a relatively good performance of the EJAD in assisting the patient.
文摘A measuring system for high-speed hydrogen ice pellet was introduced in this paper and the photographing of flying pellet taken therein. With the system, a pellet (minimum size of φ 0.3 mm) velocity (ranging from 50 m/s to 2500 m/s) can be measured in the HL-1M tokamak fueling experiments. By analyzing photographs and the conditions of frozen pellets (including gas supply, gas replenishment, temperature controlling etc), the pellet-freezing technology is summarized in the paper.
基金supported by the National Key Research and Development Program(No.2019YFB2005503)。
文摘Aiming at the problem that the lattice feature exceeds the view field of the scanning electron microscope(SEM)measuring system,a new lattice measuring method is proposed based on integral imaging technology.When the system works,the SEM measuring system is equivalent to an integral image acquisition system.Firstly,a lattice measuring method is researched based on integral imaging theory.Secondly,the system parameters are calibrated by the VLSI lattice standard.Finally,the value of the lattice standard to be tested is determined based on the calibration parameters and the lattice measuring algorithm.The experimental results show that,compared with the traditional electron microscope measurement method,the relative error of the measured value of the algorithm is maintained within 0.2%,with the same level of measurement accuracy,but it expands the field of view of the electron microscope measurement system,which is suitable for the measurement of samples under high magnification.
文摘The thesis analyzes risk factors of enterprise＇s technology innovation, adopts the undetermined measuring model to evaluate technology innovation risk and testifies it through an example.
文摘In order to further adapt to the task requirements for rapid testing and high-density launches,the LM-5 series of rocket boosters have adopted an automated acquisition and measurement process for key parameters such as the weight and centroid of the launch vehicle.A fully automatic rapid measurement technology for the weight characteristics of the rocket,consisting of a measurement system,a control system,an execution system,and a data processing system,has been developed and incorporated.This does not just achieve the adjustment of the overall assembly attitude of the rocket body and the measurement of the center of mass,but also greatly reduces the workload in the traditional measurement operations such as for assembly erection and rail transfer.Thus improving the general convenience,while greatly improving the reliability and measurement accuracy of product installation,which further promotes the popularization of an intelligent measurement technology application.
文摘Measuring the floor area of a building is one of the most important jobs of real estate workers. At the same time, this job provides buyers with the real estate information they need. Real estate information is mainly divided into the following categories: distribution area, public area and area of the building itself. In order to make real estate information more accurate and real-time, we have improved the requirements and standards for timeliness and standardization of real estate investigation. This paper analyzes some problems existing in the measurement of real estate work and puts forward effective solutions to realize the long-term development of the real estate industry in our country.
文摘The project did not move the survey first, in the engineering construction, the survey has an important position. Because of the complexity of the construction environment of water conservancy and hydropower projects, the measurement work is particularly important. By adopting the relevant measurement technology to measure, it can effectively ensure the efficient development of water conservancy and hydropower projects. In this paper, the measurement technology of water conservancy and hydropower engineering is discussed.
文摘The traditional real estate house registration survey mainly uses the technologies such as total station, RTK field survey, etc. Although this kind of technology can also accurately complete the real estate surveying and mapping work, there are many problems such as small work area, high cost, difficulty in entering the house, etc., which seriously affect the efficiency of surveying and mapping work. Compared with the field measurement technology, the application of UAV tilt measurement technology in real estate surveying and mapping work has greatly improved the accuracy, timeliness and work efficiency of surveying and mapping work. However, in the large-scale graphic surveying and mapping work, the traditional UAV tilt measurement technology requires the field adjustment and painting of eaves and editing after correction, which also leads to the increase of production cost.
文摘With the increase of complexity of road engineering, road engineering requires a large amount of data to support design, construction and demolition compensation. Traditional topographic maps are inefficient, and the data cannot meet the needs of road engineering. With the development of science and technology, more and more high-tech methods are applied to topographic mapping. This paper discusses the working principle and advantages of UAV aerial survey technology and mobile surveying system in engineering surveying and mapping, and the main application direction of surveying and mapping technology in engineering surveying and mapping.
文摘With the continuous and rapid development of society, the whole society has become more diversified and the competition among products has become more intense. In the market competition, many enterprises focus on how to occupy a larger share. Too much emphasis on the improvement of production efficiency leads to the serious neglect of the quality of many products, which seriously hinders the long-term development of enterprises. In order to do a good job in product production, the existing quality supervision must be continuously optimized and improved. Measurement and testing technology is very important in the market supervision and management. Taking Chengwu as an example, this paper analyzes the application value of this technology in the market supervision and management, and clarifies the relevant matters needing attention in the application of measurement and testing technology, hoping to provide some reference and inspiration for relevant workers.
