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Research Progress of Transportation Under Sharing Mode
Yiheng Song,
Xinyu Dong,
Xiaowei Qin,
Jiashun Chen
Issue:
Volume 7, Issue 5, October 2019
Pages:
257-265
Received:
4 August 2019
Published:
27 September 2019
Abstract: In order to more effectively and accurately study the establishment of Shared transportation system, this paper summarizes the research progress of domestic and foreign scholars' Shared transportation system.On this basis, the development direction of its description and technology is prospected.The paper points out that: 1) further development of data acquisition and analysis platform of intelligent lock is the development direction of perfect standardized management; 2) proton exchange membrane fuel cell, solar energy, reluctance motor power generation and multi-energy model can be used as the new energy power of the Shared car; 3) to solve the problems of charging and vehicle configuration encountered in the use of Shared vehicles, a new charging pile and intelligent sharing system are proposed; 4) for various complex transportation modes and technologies, how to properly classify them, establish performance indicators, and formulate various test standards and engineering application specifications will be one of the important directions for future research.
Abstract: In order to more effectively and accurately study the establishment of Shared transportation system, this paper summarizes the research progress of domestic and foreign scholars' Shared transportation system.On this basis, the development direction of its description and technology is prospected.The paper points out that: 1) further development of ...
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Chinese Children's Emotional Response Research Based on the Visual Stimulation of IAPS
Zhiyong Wang,
Zhenyu Shi,
Xirui Wang,
Jianqu Chen,
Honghai Liu,
Xiaodan Yu
Issue:
Volume 7, Issue 5, October 2019
Pages:
266-271
Received:
8 August 2019
Published:
27 September 2019
Abstract: It is a hot topic in related research that studying and evaluating of the emotion mental state and the emotional resonance through the emotional pictures which are used as a kind of visual stimulus. This paper mainly studies the induction of emotional valence and arousal of Chinese children based on the International Emotional Atlas System (IAPS) image, and develops a virtual environment interaction system for collecting multimodal information. A total of 198 children were invited to participate in the experimental test, of which the effective data was 178 groups. The article counts the response results of children's self-selected emotions' valence and arousal in different directions and degrees of image stimulation, and calculates the matching degree between picture stimulation and emotional expression under different error thresholds. The results showed that the proportion of emotional stimuli that can effectively induce children with the same valence was about 58.5%, but different degrees of picture stimuli did not have emotional expression corresponding to arousal. Therefore, it is concluded that the first is to directly use the IAPS image system for the emotional induction of Chinese children needs improvement; the second is that this study shows multimodality based on other objective performances such as expressions, movements, eyes, and EEG activation. Analysis of children's emotions is very important.
Abstract: It is a hot topic in related research that studying and evaluating of the emotion mental state and the emotional resonance through the emotional pictures which are used as a kind of visual stimulus. This paper mainly studies the induction of emotional valence and arousal of Chinese children based on the International Emotional Atlas System (IAPS) i...
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Faith in the Water God General Yang Si and the Construction of Its Sacred Field at Taoyuan
Issue:
Volume 7, Issue 5, October 2019
Pages:
272-277
Received:
8 July 2019
Published:
27 September 2019
Abstract: Sacred land experience is exclusive to the sacred space, with its unique geographical location, the spiritual beliefs of ethnic groups as the carrier, become a place of pilgrimage for people. In view of the increasingly serious problems such as floods, soil erosion and water pollution, we should respect rivers to advocate the harmonious coexistence of human and water. Through sacrificial activities, site selection, spatial pattern and symbolic system, this paper explains the future focus on the research and protection of historical space culture, revealing the close correlation between the construction of sacred sites and the planning of ecological environment protection.
Abstract: Sacred land experience is exclusive to the sacred space, with its unique geographical location, the spiritual beliefs of ethnic groups as the carrier, become a place of pilgrimage for people. In view of the increasingly serious problems such as floods, soil erosion and water pollution, we should respect rivers to advocate the harmonious coexistence...
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Study on Vibration of Offshore Oil Field WHPA Platform
Issue:
Volume 7, Issue 5, October 2019
Pages:
278-285
Received:
6 August 2019
Published:
23 October 2019
Abstract: LD32-2 Oilfield is a margin Oilfield. In order to reduce structural steel quantity and cost. The out-transportation of crude oil adopts the scheme that uses an oil tanker berthing an offshore production and storage platform. This paper introduces the general design of the berthing scheme. Tanker mooring force, tanker impact force and tanker berthing model test. It illustrates the detection and analysis on the production platform and wellhead platform vibration during berthing, puts forward the temporary countermeasure and the two permanent countermeasure schemes and economic comparison.
Abstract: LD32-2 Oilfield is a margin Oilfield. In order to reduce structural steel quantity and cost. The out-transportation of crude oil adopts the scheme that uses an oil tanker berthing an offshore production and storage platform. This paper introduces the general design of the berthing scheme. Tanker mooring force, tanker impact force and tanker berthin...
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Development Characteristics and Genetic Analysis of Sand-bodies in Taiyuan Formation of Eastern Ordos Basin
Zhao Xiaohui,
Liu Yan,
Wang Yanqing,
Jia Yani,
Liu Wenxiang,
Zhang Hui
Issue:
Volume 7, Issue 5, October 2019
Pages:
286-290
Received:
22 August 2019
Published:
23 October 2019
Abstract: On the basis of fully understanding the regional geological background, the changes of lithology, bedding type and sedimentary facies sequence are analyzed according to core, logging and logging data。The three sets of sandstones and their internal structural characteristics of Taiyuan Formation in Ordos Basin are defined. Qiaotou sandstone body is mainly developed in delta distributary channel, which is characterized by large thickness and wide distribution of sandstone body and multi-stage channel superimposition. Malan sandstone and Qiligou sandstone are mainly developed in submarine distributary channel of marine delta. They are relatively small in distribution scale, complex in internal structure of sand bodies, single massive sand bodies or composite sand bodies with thin mudstone interbeds. There are sand dams controlled by marine delta in Taiyuan Formation, which have different shapes and poor continuity. Based on the above results, it is considered that the sand body characteristics are mainly affected by paleo structuer topography, sedimentary environment and local uplift. These understandings are of great significance for judging the development position of high-quality reservoirs in sand bodies and improving the actual effect of oil and gas exploration and development in reservoir sand bodies.
Abstract: On the basis of fully understanding the regional geological background, the changes of lithology, bedding type and sedimentary facies sequence are analyzed according to core, logging and logging data。The three sets of sandstones and their internal structural characteristics of Taiyuan Formation in Ordos Basin are defined. Qiaotou sandstone body is ...
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Research on Traditional Village Protection Based on Value Evaluation
Chen Lipeng,
Chao Yaoming
Issue:
Volume 7, Issue 5, October 2019
Pages:
291-298
Received:
17 August 2019
Published:
23 October 2019
Abstract: The traditional village inherits a long history and culture, is an important carrier of harmonious symbiosis between the countryside and the natural environment, and is the essence of rural civilization and the crystallization of culture and art. Traditional villages play a very important role in displaying local culture, protecting outstanding historical buildings and local material resources. In the 21st century, traditional Chinese villages face many difficulties such as the accelerated speed of disappearance, the lack of traditional culture, the weak development of the protection of material and non-material elements. Taking Cangkou Village of Nanjing as an example, the material and cultural elements within the village are evaluated for their value from the two levels of value characteristics and strategic measures. According to the results of the value assessment, all material cultural resources points are classified into four levels,and different targeted protection levels of material and cultural elements is carried out; the inheritance of intangible culture and protection also needs to be strengthened. To achieve the protection of traditional villages, on the basis of government policy guarantees, targeted innovations in protection measures are also needed. In the past, the research on the protection of traditional villages was mainly qualitative. The research in this paper focuses on the combination of quantitative and qualitative, and has certain reference significance for the protection research of traditional villages.
Abstract: The traditional village inherits a long history and culture, is an important carrier of harmonious symbiosis between the countryside and the natural environment, and is the essence of rural civilization and the crystallization of culture and art. Traditional villages play a very important role in displaying local culture, protecting outstanding his...
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Evaluation of Residential Environment Adaptability for the Elderly in the Shantytown Reconstruction
Issue:
Volume 7, Issue 5, October 2019
Pages:
299-305
Received:
10 September 2019
Published:
23 October 2019
Abstract: Objectives: The aim of this study is to assess the elderly-oriented physical environment of shantytown reconstruction.Background: Over the past decade, it has vigorously promoted the shantytown reconstruction projects in China.As it shows that the proportion of the "empty nest" elderly with low income in the relocated residents is relatively much higher, and the extent to the elderly-oriented physical environment of shantytown reconstruction remains to be further studied. As the LESE-ILE scale is an evaluation model with multiple targets, dual-scale and variable weight, which aims at the constituent elements of the living system, the elderly living independently. Methods:Taking 3 communities in the south of Baotou Beiliang New District as an example, the paper introduces LESE-ILE scale as an evaluation to get a objective fraction in elderly-oriented physical environment, and combines semi-open interviews with elderly residents to carry out an evaluation study on the adaptability for the elderly of physical environment in the new shantytown reconstruction area.Results:Quantitatively evaluates in 4 domains: residential buildings, community supporting facilities, community service network, urban functional support and other environmental dimensions in Beiliang New District. The elderly-oriented physical environment has been greatly improved with the fraction reaching the level of the general residential system. The indoor physical environment is relatively perfect，however, the supporting facilities and service network in the community need to be strengthened. It remains to be improved the poor urban service support function due to being on the edge of the city in the future.Conclusions: The paper analyses the results evaluated from the LESE-ILE scale and puts forward the improvement strategies for the aging design in the shantytown modification and construction projects to improve the elderly-oriented physical environment. The paper also supplies a feedback and demonstration for the better of the LESE-ILE evaluation scale.
Abstract: Objectives: The aim of this study is to assess the elderly-oriented physical environment of shantytown reconstruction.Background: Over the past decade, it has vigorously promoted the shantytown reconstruction projects in China.As it shows that the proportion of the "empty nest" elderly with low income in the relocated residents is relatively much h...
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The Design and Research of Subway Wayfinding System Under the Impact of New Media Art
Xiaojuan Hui,
Yixiang Yin
Issue:
Volume 7, Issue 5, October 2019
Pages:
306-311
Received:
24 September 2019
Published:
8 November 2019
Abstract: In today's rapid construction and development of public rail transit, the design requirements for subway track space are gradually improved with the application of guidance design. As an important link in the attributes of subway public transport, guidance design plays an important role in guiding people flow, quickly entering and exiting, and providing multi-level information of stations. Article is to explore the advertising system under the new media art form how to combine science and technology, using existing, some scientific and technological achievements not to design a set of more efficient, more intelligent various advertising system, in order to guide in the future subway system is more real-time, interactive, mobility and has more sense of science and technology is a new advertising system, so as to more effectively improve the image of the city, improve the quality of service life, improve transferred, beautification space, resulting in the cognitive environment and space image, identity and ascend.
Abstract: In today's rapid construction and development of public rail transit, the design requirements for subway track space are gradually improved with the application of guidance design. As an important link in the attributes of subway public transport, guidance design plays an important role in guiding people flow, quickly entering and exiting, and prov...
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Research Status of 1-D Nonlinear Soil Layers Seismic Response in Time Domain
Liu Bingbing,
Qiao Yunlong
Issue:
Volume 7, Issue 5, October 2019
Pages:
312-317
Received:
2 September 2019
Published:
8 November 2019
Abstract: The soil dynamic constitutive model has always been one of the frontier topics in soil dynamics. In the past few decades, the constitutive model of soil has been rapidly developed, and with computer technology and one-dimensional soil earthquakes. In the development of reaction analysis methods, many earthquake response models and calculation procedures for one-dimensional time domain nonlinear soil layers have emerged. In this paper, the deterministic method of theoretical analysis is used to summarize the development of soil constitutive model in soil-time seismic nonlinear method. The time-domain nonlinear soil used in different periods is introduced according to the development order of constitutive model. Layer seismic response procedures and their advantages and disadvantages, as well as the latest improvements made to them. Finally, the development direction of nonlinear method programs is prospected.
Abstract: The soil dynamic constitutive model has always been one of the frontier topics in soil dynamics. In the past few decades, the constitutive model of soil has been rapidly developed, and with computer technology and one-dimensional soil earthquakes. In the development of reaction analysis methods, many earthquake response models and calculation proce...
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The Influence of Malassez Epithelial Residue in Inflammatory Periodontal Tissues on the Number of Periodontal Stem Cells and Their Differentiation Ability
Hua Fu,
Xiaodong Hu,
Yanfeng Xia
Issue:
Volume 7, Issue 5, October 2019
Pages:
318-322
Received:
10 September 2019
Published:
13 November 2019
Abstract: To investigate the effect of Malassez epithelial surplus in inflammatory periodontal tissues on the number and differentiation ability of periodontal stem cells. 30 patients with periodontitis admitted to the hospital from November 2014 to April 2017 were selected as the observation group. A total of 30 healthy oral examination patients were selected as control group. Periodontal tissue in the 2 groups were taken and the periodontal ligament cells, the complete inflammatory periodontal ligament stem cells by using the low density screening, purification, and periodontal tissue were obtained by using differential digestion method of Malassez epithelial remaining, were observed under inverted microscope in the periodontal tissue Malassez epithelial residual form, will be in the periodontal tissue Malassez epithelial surplus together with inflammatory periodontal ligament stem cells, RT-PCR technique has been applied to the determination of ALP and Runx-2 mRNA expression level to observe the differentiation ability. Flow cytometry showed that the cell markers CD29 and CD90 in the cultured periodontal stem cells were positive (88.9% and 99.7%, respectively). A hematopoietic stem cell marker CD45 was negative (0.3%). The inverted microscope results showed that the residual epithelial cells of Malassez, isolated and cultured, had a large nuclear to cytoplasmic ratio, and the different cells were arranged relatively closely, with the overall cell structure of "paving stone". The expression levels of ALP and runx-2 mRNA in the observation group were higher than those in the control group (P<0.05). Malassez epithelial surplus in inflammatory periodontal tissues can promote the proliferation of periodontal stem cells and improve the ability of osteogenic differentiation.
Abstract: To investigate the effect of Malassez epithelial surplus in inflammatory periodontal tissues on the number and differentiation ability of periodontal stem cells. 30 patients with periodontitis admitted to the hospital from November 2014 to April 2017 were selected as the observation group. A total of 30 healthy oral examination patients were select...
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The Continuous Strength Method of Cold-formed Stainless Steel Equal-leg Angle Section Stubs
Jing Yang,
Zhoupeng Cai,
Hongdong Ran
Issue:
Volume 7, Issue 5, October 2019
Pages:
323-329
Received:
20 August 2019
Published:
18 November 2019
Abstract: Structural stainless steel requires appropriate recognition of its beneficial properties such as material nonlinearity and significant strain hardening. The recently proposed Continuous Strength Method (CSM) exploits those benefits through a strain based approach for both stocky and slender cross-sections, and is shown to yield a higher level of accuracy and consistency, as well as design efficiency, in the capacity predictions of stainless steel cross-sections. Although there have been extensive and comprehensive studies on SHS, RHS, round tubes and H-sections stubs, but research into cold-formed stainless steel equal-leg angle section stubs remains scarce. In this paper, the scope of the CSM is extended to cover the design of cold-formed stainless steel equal-leg angle section stubs. Developed FE models included material nonlinearities as well as initial geometric imperfections. A comprehensive parametric study has been carried out covering a wide range of slenderness with different cross section geometries for the considered angle stubs. Cross-section resistances obtained from the numerical study were used to assess the performance of the current Continuous Strength Method (DSM) guidelines and EC3 when applied for stainless steel equal-leg angle section stubs; obtained comparisons showed considerable conservatism. A modified design method for cold-formed stainless steel equal-leg angle section stubs is proposed herein following CSM techniques, which provides considerably more accurate predictions for the considered cold-formed stubs. Reliability of the proposed design equations is also presented showing a good agreement with both experimentally and numerically obtained results.
Abstract: Structural stainless steel requires appropriate recognition of its beneficial properties such as material nonlinearity and significant strain hardening. The recently proposed Continuous Strength Method (CSM) exploits those benefits through a strain based approach for both stocky and slender cross-sections, and is shown to yield a higher level of ac...
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Effect of Complexation of Humic Acid with Iron Minerals on Microbial Degradation of Sulfamethoxazole
Issue:
Volume 7, Issue 5, October 2019
Pages:
330-336
Received:
28 October 2019
Published:
3 December 2019
Abstract: Microbial Shewanella oneidensis MR-1 can degrade sulfamethoxazole (SMX) and act as a microorganism with strong electron donating properties, which can accelerate the degradation of SMX when it cooperates with electronic shuttle and disproportionated iron. By adding different TOC concentrations, different molecular weight humic acids, and magnetite and hematite suspensions, the optimal system growth conditions, ie, the temperature of 30°C, pH = 7, the TOC concentration, The effect of humic acid with different molecular weights and the addition and synergistic addition of different iron minerals on the degradation of SMX by Shewanella oneidensis MR-1. The study found that humic acid stock solution, small molecule humic acid, iron mineral and both of them will accelerate the degradation of SMX by microbial MR-1. The concentration of small molecule humic acid will degrade SMX by Shewanella oneidensis MR-1. The effect of the humic acid is greater than that of the original solution. The addition of magnetite and hematite suspension to the reactor alone promotes the degradation of SMX by Shewanella oneidensis MR-1, and the addition of humic acid will improve the degradation rate of SMX.
Abstract: Microbial Shewanella oneidensis MR-1 can degrade sulfamethoxazole (SMX) and act as a microorganism with strong electron donating properties, which can accelerate the degradation of SMX when it cooperates with electronic shuttle and disproportionated iron. By adding different TOC concentrations, different molecular weight humic acids, and magnetite ...
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Research on a Device about Zero Line Break
Zheng Fuchun,
Chang Jianing,
Zong Fei,
Zhang Hao,
Li Shengjun,
Zhou Debo,
Tao Lei,
Tang Shijun,
Zhou Liangjun,
Zhou Zhiwei,
Chen Shili,
Tan Xianghua,
Liu Yi
Issue:
Volume 7, Issue 5, October 2019
Pages:
337-340
Received:
1 November 2019
Published:
3 December 2019
Abstract: In the three-phase four wires system, the neutral line is uncharged under normal circumstances, because any point of the neutral line and the earth are of the same potential. However, when the zero line is disconnected, the neutral point on the load side will generate displacement voltage. At this time, if people touch the broken zero line, the current will form a path from the phase line load zero line human body zero point phase line, which is extremely dangerous and the rise of zero line voltage will also cause damage to electrical equipment. In order to solve the harm of zero line fault, this paper puts forward a zero line fault early warning device, which includes voltage acquisition, logic judgment ,attention device and telecommunication equipment, This device can effectively detect the fault points with poor zero line contact, alarm the fault, prompt the staff to check, reduce economic losses and casualties, and improve the safety of power use.
Abstract: In the three-phase four wires system, the neutral line is uncharged under normal circumstances, because any point of the neutral line and the earth are of the same potential. However, when the zero line is disconnected, the neutral point on the load side will generate displacement voltage. At this time, if people touch the broken zero line, the cur...
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Design of PWM Amplifier Drive Module in Radar Servo System
Ying Han,
Xu Zhang,
Weifeng Quan,
Nan Li
Issue:
Volume 7, Issue 5, October 2019
Pages:
341-346
Received:
7 November 2019
Published:
3 December 2019
Abstract: In this paper, a PWM (Pulse width modulation) amplifier drive module in radar servo system has been designed. It’s the core of the drive and made up of rectifier filtering circuit and IPM. The rectifier filtering circuit produces the DC bus voltage by rectifying and filtering the single 220V50Hz AC current. The IPM receives the control signal from the control module and makes the DC bus voltage inverted into the three-phase AC voltage to drive the motor. At the same time, the protection design and software design has been given. This system has high accuracy, good quick response features and strong dynamic carrying interference capability. It has been the driving form which is used in widest in the high-precision servo control area.
Abstract: In this paper, a PWM (Pulse width modulation) amplifier drive module in radar servo system has been designed. It’s the core of the drive and made up of rectifier filtering circuit and IPM. The rectifier filtering circuit produces the DC bus voltage by rectifying and filtering the single 220V50Hz AC current. The IPM receives the control signal from ...
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Design Strategies of Elderly Facilities Based on Existing Hotel Buildings Renovation
Chen Yang,
Sun Peiyang,
Li Xiangyun
Issue:
Volume 7, Issue 5, October 2019
Pages:
347-353
Received:
4 November 2019
Published:
3 December 2019
Abstract: With the degree of population ageing rising continuously and the number of disabled and mentally disabled elderly rapidly increasing, the demand for care facilities for the elderly is growing. On the other hand, due to the Chinese urban expansion in the previous stage, a large number of existing buildings are faced with the problems of transformation and reconstruction，the reconstruction and utilization of existing building resources are also gradually paid attention to by all sectors of the society. In order to explore the new ideas of elderly facility development and realize the sustainable development of architecture. In this paper, through field research and case analysis methods, combined with the renovation process of Beijing friendship health community, put forward relevant strategies to transform the existing hotel buildings into care facilities for the elderly in terms of functional transformation, streamline arrangement, space construction, infiltration of the concept of suitable for the aged and improvement of structural adaptability, in the hope of raise rationalization proposals for the reconstruction of existing hotels into elderly facilities. The study also found that the existing hotel buildings have unique adaptability in the transformation into elderly facilities, which provides possible and convenient conditions for the success of the reconstruction.
Abstract: With the degree of population ageing rising continuously and the number of disabled and mentally disabled elderly rapidly increasing, the demand for care facilities for the elderly is growing. On the other hand, due to the Chinese urban expansion in the previous stage, a large number of existing buildings are faced with the problems of transformati...
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Research Progress of Precast Concrete Sandwich Panels
Issue:
Volume 7, Issue 5, October 2019
Pages:
354-358
Received:
4 November 2019
Published:
3 December 2019
Abstract: The wallboard is an important support and guarantee for the development of prefabricated buildings, and it is also the main development direction of green wall materials in China during the 13th five-year plan period. Precast concrete sandwich panels is composed of inner and outer leaf concrete board, sandwich insulation layer and connecting parts, which has good performance of fire prevention, heat preservation and heat insulation. On the basis of introducing the types and characteristics of precast concrete sandwich panels, this paper summarizes the research status of precast concrete sandwich panels at home and abroad, analyzes the existing problems of sandwich panels research, and prospects the research direction of precast concrete sandwich panels.
Abstract: The wallboard is an important support and guarantee for the development of prefabricated buildings, and it is also the main development direction of green wall materials in China during the 13th five-year plan period. Precast concrete sandwich panels is composed of inner and outer leaf concrete board, sandwich insulation layer and connecting parts,...
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Research on Hybrid Simulation Test Method for Cooperative Deformation of Membrane and Frame Composite Structures
Yu Yangchun,
Xu Xiaochen,
Xu Zhihong
Issue:
Volume 7, Issue 5, October 2019
Pages:
359-364
Received:
26 October 2019
Published:
3 December 2019
Abstract: In this paper, based on the joint laboratory of Mechanics Test Center of Nanjing University of Science and Technology and Walter+Bai, the PTFE coated fabric film material is taken as the test object, and the A/D signal exchange between the numerical substructure and the experimental substructure is realized by PMI serial port program, and the hybrid simulation static test is carried out. The phenomenon that the supporting structure of the frame is deformed due to the interaction in the tension process of the membrane structure is simulated, and then the unloading effect on the membrane surface is produced. The test results show that the communication performance of PMI serial port program is good, and the time consumption produced by signal exchange process can be ignored. The accuracy and stability of the hybrid simulation test system are verified by comparing the mixed simulation test results with the pure numerical simulation theoretical solution. Through the comprehensive analysis of the test data such as stress, strain, displacement, loading and unloading times, some suggestions are put forward for the design of membrane and frame composite structure.
Abstract: In this paper, based on the joint laboratory of Mechanics Test Center of Nanjing University of Science and Technology and Walter+Bai, the PTFE coated fabric film material is taken as the test object, and the A/D signal exchange between the numerical substructure and the experimental substructure is realized by PMI serial port program, and the hybri...
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A Rapid Fatigue Analysis Method of Aluminum Honeycomb Structure with Defects Based on Static Test and Numerical Simulation
Zhao Qian,
Ge Meng,
Zhang Shunjia
Issue:
Volume 7, Issue 5, October 2019
Pages:
365-372
Received:
9 November 2019
Published:
3 December 2019
Abstract: At present, most of the substrates of the multifunctional components are honeycomb sandwich structures. Therefore, the study on the fatigue characteristics of honeycomb sandwich structures with defects is helpful to accelerate the engineering application process of the multifunctional structures.In order to study the fatigue characteristics of multi-functional structure under three conditions of tension, compression and three-point bending, the author of this paper proposes a rapid fatigue analysis method of based on statics experiment and numerical simulation.Firstly, the static experiments of the structure under three mechanical conditions of tension, compression and three-point bending are carried out, and then the static simulation is carried out with ANSYS software under the same conditions, and the finite element model in ANSYS is modified according to the experimental results. Finally, the fatigue of the aluminum honeycomb sandwich structure with defects under three conditions is calculated quickly by the fatigue analysis tool in ANSYS The analytical expression between the fatigue life and the load level of the structure under different load ratios is obtained by using the least square method.The fatigue analysis method avoids the complicated fatigue experiments, solves the problem of obtaining the fatigue characteristics of the honeycomb sandwich structure with defects at low cost and high speed under different mechanical conditions and greatly improves the analysis efficiency of the fatigue characteristics of the complex structure.
Abstract: At present, most of the substrates of the multifunctional components are honeycomb sandwich structures. Therefore, the study on the fatigue characteristics of honeycomb sandwich structures with defects is helpful to accelerate the engineering application process of the multifunctional structures.In order to study the fatigue characteristics of mult...
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Research on Ontology-based Catering Recommendation Knowledge Model
Tang Dongping,
Zhu Xiangyu,
Zhu Weiquan
Issue:
Volume 7, Issue 5, October 2019
Pages:
373-378
Received:
28 October 2019
Published:
3 December 2019
Abstract: At present, the healthy eating information available on the Internet is growing rapidly, but it is very time-consuming for users to understand healthy eating through Internet data. This article starts from the relevant theories of TCM constitution and diet, and uses the methods and tools of ontology modeling to carry out food recommendation knowledge. Modeling, constructing a knowledge model including the user ontology and the ontology of the healthy catering field, using Protégé software to realize the establishment of the ontology, forming a standardized representation of the catering ontology, establishing a user ontology model and a “healthy catering domain ontology model”,which makes the knowledge related to catering recommendation easy to reconstruct and expand.In the meantime,the model makes it easy to expand the knowledge and build the knowledge map , providing a theoretical basis for healthy diet recommendation services.
Abstract: At present, the healthy eating information available on the Internet is growing rapidly, but it is very time-consuming for users to understand healthy eating through Internet data. This article starts from the relevant theories of TCM constitution and diet, and uses the methods and tools of ontology modeling to carry out food recommendation knowled...
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