Processing math: 100%

Message Board

Dear readers, authors and reviewers,you can add a message on this page. We will reply to you as soon as possible!

Previous Issue 2020 Vol. 42, No. 12 Archive Next Issue

Display Method:
A Hot-Spot-Sensitive Adaptive Skiplist
WEN Tao JI Feng LIU Li-xia
2020, 42(12): 1-14. doi: 10.13718/j.cnki.xdzk.2020.12.001
Abstract (790) HTML (790) PDF  2879KB (157)
Abstract:
In this study, the locality principle of program access is used to improve the skiplist query efficiency, and the adaptive mechanism of the above acceleration strategy is investigated. Firstly, the skiplist query operation is improved, so that it can...
Analysis of Global News Flow Patterns Based on Complex Networks
MO Xiao-mei SHEN Hao YU Ding-guo
2020, 42(12): 15-24. doi: 10.13718/j.cnki.xdzk.2020.12.002
Abstract (745) HTML (745) PDF  1527KB (144) Cited by (8)
Abstract:
The advent of the Internet has greatly expanded the breadth and depth of news coverage and dissemination on a global scale, and online reporting has brought the world closer together than ever before. Based on the characteristics of the GKG dataset i...
Fault Diagnosis Based on One-Dimensional Densely Connected CNN
ZHAO Zhi-hong ZHAO Jing-jiao LI Qing LI Le-hao
2020, 42(12): 25-33. doi: 10.13718/j.cnki.xdzk.2020.12.003
Abstract (1009) HTML (1009) PDF  5345KB (97) Cited by (16)
Abstract:
In recent years, data-driven bearing fault diagnosis has been widely studied due to the continuous development of deep learning. Models of deep neural networks such as convolutional neural network (CNN) gradually find applications in fault diagnosis....
Research on Intelligent Recognition of Silkworm Larvae Races Based on Convolutional Neural Networks
SHI Hong-kang TIAN Ya-ya YANG Chuang CHEN Yu SU Si-yuan ZHANG Zhi-yong ZHANG Jian-fei JIANG Meng
2020, 42(12): 34-45. doi: 10.13718/j.cnki.xdzk.2020.12.004
Abstract (831) HTML (831) PDF  10269KB (100) Cited by (18)
Abstract:
Mixed silkworm larvae of different raceshas a negative effect on cross breeding. In order to solve the problem of high subjectivity and low reliability in race recognition of silkworm larvae by human eyes, a study on image recognition of silkworm lar...
Dynamic Study of Regional Soil Moisture Content Based on Multi-source Remote Sensing Co-inversion
SUN Yu-le QU Zhong-yi LIU Quan-ming WANG Li-ping
2020, 42(12): 46-53. doi: 10.13718/j.cnki.xdzk.2020.12.005
Abstract (912) HTML (912) PDF  4094KB (163) Cited by (13)
Abstract:
To further promote the application of the multi-source remote-sensing technology on soil moisture monitoring in cropland soils, a study area with 3 500 hectares located at Wuyuan County was used to measure soil moisture and correct multiple remote-se...
Collection, Preservation, Evaluation and Optimization of Germplasm Resources of Gastrodia in Its Main Producing Areas
LI Qiao-ling XIAO Bo DENG Cai-fu LI Pin-ming YANG Yi
2020, 42(12): 54-59. doi: 10.13718/j.cnki.xdzk.2020.12.006
Abstract (1021) HTML (1021) PDF  1111KB (256) Cited by (8)
Abstract:
Gastrodia elata is a traditional Chinese herbal medicine with remarkable medicinal effects. However, a great variety of Gastrodia germplasms differ considerably in their appearance and production performance, on the one hand, and in the...
Determination of the Intrinsic Quality of Citrus Variety W·Murcott by Near Infrared Spectroscopy
LI Xun-lan YIN Xu-min YANG Lei HONG Lin HAN Guo-hui WANG Wu
2020, 42(12): 60-66. doi: 10.13718/j.cnki.xdzk.2020.12.007
Abstract (780) HTML (780) PDF  2103KB (145) Cited by (4)
Abstract:
The feasibility of fast and nondestructive measurement of main internal quality indexes of the fruit of the citrus variety W·Murcott was investigated using near infrared spectroscopy in this study. Near infrared spectral data of W·murcott fruit were ...
An Improved Method for Purifying Enterocytozoonbieneusi Spores Isolated from Stool Samples of Swine
MO Bi-ying JIAO Han-wei XU Jin-zhi LUO Jian NI Wen-jia LI Tian BAO Jia-ling ZHOU Ze-yang
2020, 42(12): 67-72. doi: 10.13718/j.cnki.xdzk.2020.12.008
Abstract (804) HTML (804) PDF  3479KB (110)
Abstract:
In order to obtain better purified Enterocytozoonbieneusi spores. E.bieneusi spores from the stool samples of diarrhea swine were purified by a combination procedure of continuous mesh sieve filtration, isopycnic Percoll and sucrose gra...
A Ripley's K Function-Based Study of the Spatial Pattern of Populus euphratica Population in Daliyaboyi Oasis in Desert Hinterland
NING Mo LI Na SHI Qing-dong GUO Yu-chuan
2020, 42(12): 73-82. doi: 10.13718/j.cnki.xdzk.2020.12.009
Abstract (611) HTML (611) PDF  5433KB (69) Cited by (2)
Abstract:
In order to find out the spatial pattern of Populus euphratica population in Daliyaboyi oasis and the influence of water resource allocation on its spatial pattern, Ripley's K function was used to analyze the results of UAV remote sensing imag...
Quasi-Harmanci Injectivity of Modules
QIN Jun-quan LIANG Li
2020, 42(12): 83-87. doi: 10.13718/j.cnki.xdzk.2020.12.010
Abstract (642) HTML (642) PDF  1092KB (88)
Abstract:
In this paper, we introduce the concept of quasi-Harmanci injective modules and give their characterizations. Let NHI denote the class of quasi-Harmanci injective modules and...
Research on the Flat Object in the Category of Ω-Left R-Modules
MA Xiao-jun TANG Jian-gang
2020, 42(12): 88-95. doi: 10.13718/j.cnki.xdzk.2020.12.011
Abstract (485) HTML (485) PDF  1163KB (112) Cited by (1)
Abstract:
In this paper, we introduce the concept of category of Ω-left R-modules. Equivalent descriptions of the category of Ω-right R-modules is investigated. The product of a set of Ω-left R-modules is a flat object...
An Efficient Finite Element Method for Second-Order Elliptic Eigenvalue Problems in Circular Fields
YANG Min AN Jing
2020, 42(12): 96-102. doi: 10.13718/j.cnki.xdzk.2020.12.012
Abstract (919) HTML (919) PDF  1471KB (125) Cited by (4)
Abstract:
A finite element method based on dimension reduction scheme is proposed for second-order elliptic eigenvalue problems in a circular domain. Firstly, the original problem is transformed into a series of one-dimensional eigenvalue problems by polar coo...
Topological Methods for a New Class of Fractional Mixed Differential Variational Inequalities with the Same Parameter
WU Xin-kun
2020, 42(12): 103-106. doi: 10.13718/j.cnki.xdzk.2020.12.013
Abstract (706) HTML (706) PDF  1062KB (94) Cited by (1)
Abstract:
In this paper, a new class of fractional mixed differential variational inequalities are introduced and studied, and it's proved that the set of solutions of this differential variational inequalities is nonempty.
Influencing Factors for Financial Risks in Implementation of the Rural Revitalization Strategy——Empirical Evidence from the NPL Ratio of New Third Board Agricultural Loan Companies in the Yangtze River Delta Region
TANG Yi-fu
2020, 42(12): 107-116. doi: 10.13718/j.cnki.xdzk.2020.12.014
Abstract (1741) HTML (1741) PDF  1664KB (130) Cited by (14)
Abstract:
Strengthening the risk control of financial services for "three rural issues", i.e. agriculture, rural areas and farmers, is not only the requirement of the Strategic Plan for Rural Revitalization (2018-2022) that there should be no systematic financ...
Research on the Transition and Development of Tourism Destinations Based on Functional Analysis——Take Yunnan as an Example
MING Qing-zhong LIU An-le
2020, 42(12): 117-125. doi: 10.13718/j.cnki.xdzk.2020.12.015
Abstract (1262) HTML (1262) PDF  1655KB (103) Cited by (16)
Abstract:
Under the strategic background of "holistic tourism destinations development" and supply-side reform of tourism, the status of tourism destinations as the core element of tourism remains unchanged. Therefore, it is of important research value to cons...
Application of Several Evaluation Methods for River Water Quality in the Yangtze River Mainstream
NING Yang-ming YIN Fa-neng LI Xiang-bo
2020, 42(12): 126-133. doi: 10.13718/j.cnki.xdzk.2020.12.016
Abstract (882) HTML (882) PDF  1134KB (93) Cited by (63)
Abstract:
In order to provide ascientific basis for water environment governance in Huangshi section of the Yangtze River, the monitoring data of water quality from the Three-Gorge section and the section of Port of Fengbo in Huangshi section of the Yangtze Ri...
A Spatial and Temporal Analysis of Water Resources Ecological Footprint and Ecological Carrying Capacity in Small and Medium-Sized Cities——A Case Study of Suqian City
HOU Xin-chen XIE Shi-you
2020, 42(12): 134-141. doi: 10.13718/j.cnki.xdzk.2020.12.017
Abstract (735) HTML (735) PDF  1212KB (108) Cited by (25)
Abstract:
In order to study the situation of water consumption and sustainable utilization in small and medium-sized cities, a case study was made of Suqian city of Jiangsu province, in which the spatio-temporal changesfrom 2011 to 2017 inthe ecological footpr...
The Effect of Working Memory Resource Wastage on Mental Arithmetic Processing
PAN Yun ZHAO Yuan-yao
2020, 42(12): 142-148. doi: 10.13718/j.cnki.xdzk.2020.12.018
Abstract (665) HTML (665) PDF  1158KB (126) Cited by (3)
Abstract:
Using the mental arithmetic and articulation dual-task paradigm of Vall e-Tourangeau et al., the subjects were asked to add mental arithmetic on the interactivity of different problem representations while articulating continuously, to explore the ef...
The Relationship Between Appearance Satisfaction and Body Image Disturbance Among College Students: A Moderated Mediation Model
ZHANG Ran-ran HUANG Lie-yu CHEN Ming-xuan GUI Zi-jie YAN Wan-sen
2020, 42(12): 149-155. doi: 10.13718/j.cnki.xdzk.2020.12.019
Abstract (915) HTML (915) PDF  1198KB (207) Cited by (8)
Abstract:
In a questionnaire survey, 516 college students completed the self-assessment scales (SAS) of Appearance Satisfaction, Self Acceptance, Family APGAR Index and Cosmetic Mental States, and a Structural Equation Model (SEM) was established by the AMOS s...
Theory and Application on a Power-Cycling Variable Transmission System
WANG Huan SUN Dong-ye GE Shuai-shuai LI Ming SHU Rui-zhi
2020, 42(12): 156-163. doi: 10.13718/j.cnki.xdzk.2020.12.020
Abstract (1545) HTML (1545) PDF  1482KB (177) Cited by (1)
Abstract:
Power drive, hydrodynamic drive, hydraulic drive and friction drive have the common characteristics of continuously variable ratio but low efficiency in comparison with gear meshing drive. In this paper, anovel method for the design of power-cycling ...
A Viewable Analysis of Published Articles from Journal of Southwest University(Natural Science Edition, 2009-2018)
BAO Ying OU Bin
2020, 42(12): 164-172. doi: 10.13718/j.cnki.xdzk.2020.12.021
Abstract (438) HTML (438) PDF  2225KB (292) Cited by (5)
Abstract:
According to the relevant data shown in the database of CNKI, we have conducted a bibliometric study of the publications of Journal of Southwest University (Natural Science Edition) from 2009 to 2018. Using charts, tables and CiteSpaceV to visualize ...