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Research on the Framework of the Evaluation System of College Students' Learning Process
Yu He,
Wang Nana,
Wang Xiujuan
Issue:
Volume 11, Issue 2, April 2023
Pages:
29-34
Received:
13 February 2023
Accepted:
21 March 2023
Published:
28 March 2023
Abstract: To construct the evaluation system of college students' learning process, there are three layers: target layer, criterion layer and sub-criterion layer. There are five first-level indicators in the criteria layer, which are the individuation of learning process, the individuation of learning analysis, the coupling of learning, the autonomy of learning process and the creativity of learning process. There are 17 secondary indicators in the sub-criteria layer. The establishment of a good hierarchical structure is the premise of using AHP to solve problems. The basis of analyzing problems is to build a multi-level structure by layering various influencing factors. To determine the relationship between the elements, and according to the controlling relationship of the upper layer to the factors of the lower layer, the influencing factors are hierarchical, and then the hierarchical structure model of the upper layer and the lower layer is constructed, the geometric average method is used to calculate the average of the experts. The geometric average method ensures the reciprocal character of the matrix. Six judgment matrices are obtained by sorting the data, using MATLAB tool to calculate the weight value of each layer index of each judgment matrix, and carry on the consistency test, obtain the weight value of each layer index, the judgment matrix has passed the consistency evaluation, to achieve the overall objectives of the system and put forward all the measures, decision-making programs.
Abstract: To construct the evaluation system of college students' learning process, there are three layers: target layer, criterion layer and sub-criterion layer. There are five first-level indicators in the criteria layer, which are the individuation of learning process, the individuation of learning analysis, the coupling of learning, the autonomy of learn...
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To Explore the Mechanism of Buyang Huanwu Tang in the Treatment of Hypertension Based on Network Pharmacology
Xiaoqin Hu,
Zhao Wei,
Meng Dan,
Tao Xin,
Fu Rong,
Xuexia Zeng,
Meilin Tao,
Xuewen Zeng
Issue:
Volume 11, Issue 2, April 2023
Pages:
35-40
Received:
24 February 2023
Accepted:
28 March 2023
Published:
31 March 2023
Abstract: Background: Hypertension is a cardiovascular disease with high incidence. Syndrome of qi stagnation and blood stasis is a common symptom of traditional Chinese medicine in hypertension, manifested as dizziness, palpitation, chest tightness and so on. Buyang Huanwu Tang has the effect of activating blood circulation and regulating collaterals, removing blood stasis and regulating qi, which is widely used in clinical treatment of hypertension. Compared with Western medicine, Chinese medicine has different antihypertensive targets in the treatment of diseases, which can play a better antihypertensive effect. Purpose: To explore the molecular mechanism of buyang huanwu tang in the treatment of hypertension based on network pharmacology. Methods: the active components of buyang huanwu decoction were screened by TCMSP database. Prediction of relevant targets by Drugbank, GeneCards and OMIM databases; The PPI network control chart was constructed by using Cytoscape3.6.0 software. Enrichment analysis of GO and KEGG was carried out through DAVID database, and mapping was carried out by using Cytoscape. Results: a total of 97 active components, 34 disease targets and 59 pathways were screened. Conclusion: buyang huanwu decoction has the characteristics of multi-component, multi-target and multi-pathway in the treatment of hypertension. This study provides an idea for further research on the effect and mechanism of buyang huanwu decoction in the treatment of hypertension.
Abstract: Background: Hypertension is a cardiovascular disease with high incidence. Syndrome of qi stagnation and blood stasis is a common symptom of traditional Chinese medicine in hypertension, manifested as dizziness, palpitation, chest tightness and so on. Buyang Huanwu Tang has the effect of activating blood circulation and regulating collaterals, remov...
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Analysis on Seismic Performance of Prefabricated Building Box Formwork Combination
Zeng Changluo,
Chen Zhaorong,
Cai Zhili,
Liao Fei,
Yang Tao
Issue:
Volume 11, Issue 2, April 2023
Pages:
41-49
Received:
9 February 2023
Accepted:
27 March 2023
Published:
31 March 2023
Abstract: The outbreak of novel coronavirus pneumonia since the end of 2019 has posed a great challenge to the world's public health security. According to the statistics of COVID-19 epidemic released by the World Health Organization, the global epidemic has accumulated more than 500 million infections and more than 6.2 million deaths. However, if all hospitals at all levels are changed to designated hospitals, it may cause a run on medical resources. Container building has the advantages of simple construction, short construction period, recyclability and cost saving, and can be effectively used in the rapid transformation of talent apartment buildings and general wards into designated hospitals for efficient use. During the COVID-19, Wuhan Huoshen Mountain Hospital and Leishen Mountain Hospital adopted the container structure design, which is similar to Lego, combining containers one by one, giving full play to the advantages of container buildings. However, the current container building code stipulates that container buildings are only applicable to low and multi-storey buildings with six floors or less. In order to improve the seismic performance of container buildings and expand the application scope of container buildings, this paper proposes a box form composite structure based on traditional containers. Through the analysis of mechanical performance parameters, it is concluded that the "strong column and weak beam" yield mechanism of the box form composite structure is good, The initial rigidity of the weak axis is 133% higher than that of the traditional container structure, the yield strength is about 3 times that of the traditional container structure, and the ultimate bearing capacity is 2.5 times higher than that of the traditional container structure.
Abstract: The outbreak of novel coronavirus pneumonia since the end of 2019 has posed a great challenge to the world's public health security. According to the statistics of COVID-19 epidemic released by the World Health Organization, the global epidemic has accumulated more than 500 million infections and more than 6.2 million deaths. However, if all hospit...
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Research on Analytical Methods of Computational Mechanics in Bridge Pier Beam System
Huang Yuhuan,
Ding Shihong,
Niu Zhongrong,
Hu Zongjun,
Zhou Mi,
Li Guanghao
Issue:
Volume 11, Issue 2, April 2023
Pages:
50-54
Received:
18 April 2023
Accepted:
17 April 2023
Published:
23 April 2023
Abstract: A double-track bridge consists of deck continuous steel-truss beam structure. Because there are 151.5m cantilever erection cases in the construction process of steel-truss bridge from side pier to main pier, the two super-high piers with height of 110.9m and 133.5m are set at 81m distance from two side piers to shorten the cantilever erection length of steel-truss bridge. In order to simulate the contact problem of the piers and the steel truss beam, a new mechanical method is developed to simulate the non-linear contact of the pier and beam system in cantilever erection process. The mechanical model is combined with finite element method software. Then the iterative trial calculation and feedback adjustment operation mechanism are used in the finite element analyses of the whole erection process of steel truss bridge. Thus the reaction forces of latticed super high pier and its stress variation under different environmental temperature conditions in each construction stage are obtained. Based on accurate analysis of the stress status of the super-high piers subjected to the steel truss beam bridge, the reasonable suggestions are proposed for the construction of the steel truss beam and the piers, providing a simple analysis method for the construction calculation of the latticed super high pier.
Abstract: A double-track bridge consists of deck continuous steel-truss beam structure. Because there are 151.5m cantilever erection cases in the construction process of steel-truss bridge from side pier to main pier, the two super-high piers with height of 110.9m and 133.5m are set at 81m distance from two side piers to shorten the cantilever erection lengt...
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Mechanical Analysis and Reinforcement for Platform Structures at Top of Super High Pier
Huang Yuhuan,
Li Xuyang,
Qiao Zhongfa,
Ye Jianlong,
Zhou Mi,
Li Guanghao
Issue:
Volume 11, Issue 2, April 2023
Pages:
55-60
Received:
18 April 2023
Accepted:
18 April 2023
Published:
23 April 2023
Abstract: A double-track bridge is continuous steel-truss beam structure, which consists of 7 spans. Because there are 151.5m cantilever erection cases in the construction process of the steel-truss bridge from side pier to main pier, the two super-high piers with height of 110.9m and 133.5m are set at 81m distance from two side piers to shorten the cantilever erection length of the steel-truss bridge. In order to ensure the safety of construction, the whole mechanical models of the steel-truss bridge together with the super-high pier and bearing beam are established in this paper. In the whole erection process of the steel-truss bridge, the bearing beam connects the steel-truss bridge and the super high pier, which is the main bearing structure. Then, the finite element method (FEM) with three dimensional shell elements and body elements is used to analyse the stress and deformation status of the bearing beam during the construction of the continuous steel-truss girder. Based on the analytical results from FEM, the reinforcement schemes are proposed for the initial design of the bearing beam where the local buckling or insufficient strength will occur under dangerous working cases. The structural reinforcement strategy makes the bearing beam meet the safety requirements under the construction process. The results of the present paper can provide reference for pier top layout and reinforcement analysis of similar super-high piers.
Abstract: A double-track bridge is continuous steel-truss beam structure, which consists of 7 spans. Because there are 151.5m cantilever erection cases in the construction process of the steel-truss bridge from side pier to main pier, the two super-high piers with height of 110.9m and 133.5m are set at 81m distance from two side piers to shorten the cantilev...
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Research on Indoor Thermal Environment Testing of Coach Station Buildings in Xi'an Area
Li Xueping,
Qin Luo,
Li Jingjing
Issue:
Volume 11, Issue 2, April 2023
Pages:
61-67
Received:
18 April 2023
Accepted:
13 April 2023
Published:
23 April 2023
Abstract: In order to study the current situation of the indoor thermal environment of the coach station in Xi'an, Xi'an Chengxi Coach Station was selected as the research object, and the indoor and outdoor air temperature and relative humidity of the coach station in winter and summer were tested on-site and questionnaires were distributed, based on the cumulative frequency evaluation and The PMV-PPD thermal evaluation system was analyzed. The results show that some passengers have poor comfort in the waiting room of the coach station; the average temperature of the indoor waiting area in winter is 16.1°C, and the average relative humidity is 31.3%. The PPD is 39.13%; the average temperature of the indoor waiting area in summer is 28.3°C, the average humidity is 60.7%, the average value of summer PMV is 0.90, and the predicted unsatisfactory percentage PPD is 23.83%; The overall poor indoor thermal environment in winter and summer needs to be improved. The quality of the indoor thermal environment can be improved by adding an insulation layer to the outer envelope of the passenger station building and replacing the glass material of the outer window. The research results can improve the quality of the highway passenger station in Xi'an Building indoor thermal environment provides a reference.
Abstract: In order to study the current situation of the indoor thermal environment of the coach station in Xi'an, Xi'an Chengxi Coach Station was selected as the research object, and the indoor and outdoor air temperature and relative humidity of the coach station in winter and summer were tested on-site and questionnaires were distributed, based on the cum...
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Weed Pollen Grading Prediction in Summer and Autumn in Beijing -- A Modeling Based on Patients with Weed Pollen Allergy
Yuhui Ouyang,
Zhaoyin Yin,
Jun Yang,
Luo Zhang
Issue:
Volume 11, Issue 2, April 2023
Pages:
68-73
Received:
21 April 2023
Accepted:
19 April 2023
Published:
23 April 2023
Abstract: Background: Pollinosis is an allergic disease caused by pollen allergens, which has a high incidence in Northern China. Weed pollen allergy in summer and autumn is the main reason for the seasonal increase in hospital visits in many cities. Objective: To develop a grading model of weed pollen deposition based on the data of allergic patients to predict development in patient with pollen allergy. Methods: Weed pollen data from four pollen monitoring stations in Beijing and the number of weed pollen allergen positive cases detected by serum specific immunoglobulin E (sIgE) in Beijing Tongren Hospital from 2013 to 2016 were used to develop a statistical model of pollen deposition and provide optimized threshold values. Results: There was a logarithmic correlation between the number of patients with weed pollen allergy and weed pollen deposition, and the average pollen deposition for three consecutive days was most correlated with the number of allergic patients. Based on the threshold of the number of patients and the characteristics of weed pollen, a five-stage pollen deposition grading model was developed to predict the degree of pollen allergy. Conclusions: Graded prediction of weed pollen deposition provide guidance for allergen protection of people with pollen allergy, and also provide a time window for intervention treatment before pollen stage and allergy-related clinical research.
Abstract: Background: Pollinosis is an allergic disease caused by pollen allergens, which has a high incidence in Northern China. Weed pollen allergy in summer and autumn is the main reason for the seasonal increase in hospital visits in many cities. Objective: To develop a grading model of weed pollen deposition based on the data of allergic patients to pre...
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Research and Application of Thixotropy of Soft Soil in Tianjin Binhai New Area
Yang Aiwu,
Yang Shaokun,
Wu Kelong,
Sun Baishun
Issue:
Volume 11, Issue 2, April 2023
Pages:
74-82
Received:
21 April 2023
Accepted:
20 April 2023
Published:
23 April 2023
Abstract: Taking the soft clay of Tianjin Binhai New Area as the research object, the cross-plate shear instrument was used to test the remodeled soil samples with different moisture content for thixotropic time of 1d, 4d, 7d, 10d, and 15d. Then the samples after 15 days of standing were taken for heap load test to investigate the strength change mechanism under natural standing and graded loading, respectively. Meanwhile, the microstructure evolution mechanism was revealed by scanning electron microscopy. The results show that with increase the water content, the increase of soil strength gradually slows down under thixotropic action. When the water content reaches 50% or above, the soil strength hardly increases any more. The strength increases due to the heap load, but there is often accompanied by large deformation or settlement, with the increase of water content. In the process of soil thixotropy, the overall structure gradually changed from the sheet stacked structure to the laminated scaffold structure. The number of particles and pores decreases. The equivalent diameter, roundness, as well as morphology ratio of particles increase, while the changes of these microscopic parameters of pores show an opposite trend. On this basis, thixotropy was used to prepare foundation soil of model and large-scale model tests were carried out to reveal the real situation of the interaction of wave-breakwater-soft soil foundation. The research results can provide reference for the application of soft soil thixotropy under wave action in the foundation of semicircular breakwater.
Abstract: Taking the soft clay of Tianjin Binhai New Area as the research object, the cross-plate shear instrument was used to test the remodeled soil samples with different moisture content for thixotropic time of 1d, 4d, 7d, 10d, and 15d. Then the samples after 15 days of standing were taken for heap load test to investigate the strength change mechanism u...
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