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Land use in Hunan Province can share the common challenges on land space protection and development in China. The multifunctional land can be expected to solve the shortage and weak functionality of land resources. Taking Hunan Province as the research object, this article aims to construct a multifunctional evaluation index system using the land use multifunctional mechanism of "element structure space function". Land use multifunctional level was evaluated using entropy and TOPSIS, according to the spatial perspective of "Production-living-ecosystem". At the same time, spatial analysis was used to clarify the evolution characteristics of land use patterns in the region from 2000 to 2020. For example, the land use spatial transfer model and land use dynamic degree were then selected using ArcGIS software. Finally, a systematic investigation was made to explore the dynamic relationship between the evolution of land use spatial pattern and functional transformation using the dual perspective of "space+function". The results show that there were significant fluctuations in the spatial pattern of land use in Hunan Province from 2000 to 2020, where the production and ecological spaces were ever shrinking to expand the living spaces; Among them, the major characteristics were attributed to the significant expansion of living space and frequent conversion between production and ecological space. The main factors were obtained on the spatial fluctuations and reorganization of land use. 2) The regional distribution pattern and production space were distributed mainly in the central area of Changde, Yiyang, and Yueyang in the northern part of the province, as well as the border of Hengyang, Loudi, Shaoyang, and Yongzhou in the central part; The living space was distributed in the core distribution area centered around the Changsha Zhuzhou Xiangtan urban agglomeration and the central urban areas of each city; The ecological space shared the widest distribution area, particularly in the hilly and mountainous areas of the western and southwestern parts of the province, as well as in the Dongting Lake water area located in the northern part of the province; There was the more severe variation in the land use pattern evolution of the surrounding Changsha Zhuzhou Xiangtan area, followed by the mountainous areas on the east, west, and south sides; The dynamic degree results show that there was an upward trend for the overall dynamic change rate of land use. 3) The level of land use in the "Production-living-ecosystem" functions showed an increasing trend per year, with the highest ecological function score and the most significant changes, followed by the production function. Furthermore, the level of land use tended to stabilize during fluctuations. The living function was the lowest, indicating an increasing trend each year; The horizontal differences among regions were shifted from the low to high level relative equilibrium. 4) There was a significant correlation between the land use spatial pattern and functional transformation, especially in the temporal patterns. Finally, a beneficial attempt was made to explore the relationship between them using the multifunctional mechanism of "space+function" in land use; Therefore, it is necessary to further combine the land multifunctional measurement under the "one to many" mechanism, in order to more accurately identify the interrelationships among the "three living" spaces and functions [ABSTRACT FROM AUTHOR]

The influence of frequency characteristics of devices is complex. The effects of AlN barrier thickness, gate length, gate-drain spacing and work function on the frequency characteristics of AlN/ β-Ga2O3 high electron mobility transistor (HEMT) were studied by Sentaurus TCAD in this paper. The following conclusions are obtained: as the thickness of the AlN barrier layer increases from 10 nm to 25 nm, the cutoff frequency (fT) and maximum oscillation frequency (fmax ) rise by 18 and 17 GHz respectively. The decrease of gate capacitance is the main reason for the increase of fT . Furthermore, it was found that the thinner barrier layer enhanced the gate's ability to control the channel electrons. When the gate length is scaled down from 0. 9 μm to 0. 1 μm, fT and fmax increase by 84 and 98 GHz, respectively, representing a far more profound influence on frequency characteristics than the barrier layer thickness. However, when the gate length fell below 0. 1 μm, short-channel effects emerged. As the gate-drain spacing increase, fT exhibits a slight decrease. Coupled with the concurrent reduction in source resistance, this led to a synchronized trend in fmax and fT only when the gate-source voltage (VGS ) exceeds - 1. 2 V. The work function, on the other hand, has minimal impacts on fT and fmax, but an increase in the work function positively influenced the device' s pinch-off characteristics. In summary, this paper indicates that by shortening the gate length while concurrently augmenting the thickness of the AlN barrier layer, gate-drain spacing, and work function, one can enhance the frequency characteristics while also improving the pinch-off characteristics of the device, which has certain guiding significance for the design of HEMT devices. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Harbin University of Science & Technology is the property of Journal of Harbin University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Harbin University of Science & Technology is the property of Journal of Harbin University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Computer Engineering & Applications is the property of Beijing Journal of Computer Engineering & Applications Journal Co Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Beijing University of Technology is the property of Journal of Beijing University of Technology, Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The weighted sequence space with the exponential function as the weight function was introduced, the Hilbert-type discrete inequality with generalized homogeneous Kernel in the weighted sequence space was obtained by the power coefficient method, and the resulting inequality was used to discuss the boundedness and norm estimate of sequence operators in the weighted sequence space, and several special cases were given. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Computer Engineering & Applications is the property of Beijing Journal of Computer Engineering & Applications Journal Co Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Intensive development of land, function and space could be realized through multifunctional integration. It is a typical demand for cultural buildings in small and medium-sized cities in China and an inevitable trend for the development of low-carbon cities. The stacking and occupying of blocks are one of the common morphological design strategies to achieve architectural intensification. This paper explores the problems, responses, advantages and disadvantages of this strategy in architectural design at three levels: general layout, space organization, and construction means. This strategy is applied to the design of Dantu Culture and Art Center, which could provide case practice and practical reference for relevant architectural design of small and medium-sized cities in China. [ABSTRACT FROM AUTHOR]

This study is based on the travel characteristics of Shenyang residents to park green areas for leisure activities on weekends and holidays, and measures the accessibility of residents to park green areas, the fairness of resource allocation and the spatial matching with residence with the help of Gaussian two-step floating catchment area method, per capita green area location entropy and inconsistency index, respectively, to comprehensively explore the rationality of park green area allocation, which helps to improve the function of park green areas and optimize the urban spatial structure. The results show that: (1) The average travel distance of residents in Shenyang to park green areas for leisure activities has a trend of increasing circles, and most residents travel to park green areas with the characteristics of proximity. The phenomenon of residents' long-distance cross regional leisure activities in the park is less. (2) The parks with high accessibility are located in the east-west direction of the third ring. The parks with low accessibility are located in the north-south direction of the third ring and around the ring road, which is in short supply. (3) The spatial allocation of park green space in the north-south direction in the central part of the city is unfair, and there is a spatial mismatch between residential and park green space functions. Park green space can be appropriately built within the residential function in the central part to ensure the residents' demand for park leisure activities. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Ordnance Equipment Engineering is the property of Chongqing University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Central China Normal University is the property of Huazhong Normal University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Bulletin of Soil & Water Conservation is the property of Bulletin of Soil & Water Conservation Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Hebei University of Science & Technology is the property of Hebei University of Science & Technology, Journal of Hebei University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Beijing University of Technology is the property of Journal of Beijing University of Technology, Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Arid Zone Research / Ganhanqu Yanjiu is the property of Arid Zone Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Aimed at the partial slip problem of contact interface between assemblies at different temperatures, a semianalytical model for 3D steady-state thermoelastic partial slip contact was established. Based on the thermoelastic theory and the heat conduction equation, the frequency response functions of the half space under heat flux and force load were given, and the corresponding influence coefficients were established. With the discrete convolution and fast Fourier transform (DC-FFT), the partial contact between the rigid high-temperature indenter and the thermoelastic half space was efficiently solved. The heat conduction behavior was assumed to follow Fourier’s law, and the stick/slip state on the contact interface was determined under Coulomb ’s law. Based on this semi-analytical model, the effects of external loads and temperature differences on the surface pressure distribution, the friction distribution, the rigid body displacement, and the stick/slip evolution behaviors, were analyzed in detail. The numerical results show that, the increase of the temperature difference will lead to a decrease of the contact area, result in an increase of the peak values of the normal pressure and the friction, and significantly influence the regions of the stick zone and the slip zone. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Jilin University (Science Edition) / Jilin Daxue Xuebao (Lixue Ban) is the property of Zhongguo Xue shu qi Kan (Guang Pan Ban) Dian zi Za zhi She and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Arid Zone Research / Ganhanqu Yanjiu is the property of Arid Zone Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Geography & Geographic Information Science is the property of Geography & Geo-Information Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Guangdong University of Technology is the property of Journal of Guangdong University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Harbin University of Science & Technology is the property of Journal of Harbin University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

To solve the car-following problem of intelligent and connected vehicle (ICV), a car-following model of ICV was proposed, and the model properties were analyzed. Considering the car-following property of variable headway, the ICV car-following model was proposed to maintain simple model structure and clear physical meaning of model parameters. Based on the function of spacing and speed at equilibrium state, the flow-density function curve of the proposed ICV car-following model was calculated. The mechanism of improving traffic capacity by the proposed ICV car-following model was also analyzed. From the perspective of microcosmic kinematics, the stability criterion of the proposed ICV car-following model was theoretically derived. The results show that according to the proposed ICV carfollowing model, the maximum capacity can be obtained with the density of 66. 887 2 car · km -1 and the speed of 63. 576 0 km ·h -1. The model stability criterion is related with traffic flow speed and can be stable at any speed, which shows that the model has good model stability condition. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Guangdong University of Technology is the property of Journal of Guangdong University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Most of the existing multi-label learning techniques consider the correlation learning problem but ignore the inconsistency feature of structural properties, which can change the structural property of the label space obtained by function mapping and it can directly affect the classification performance. In order to deal with this problem, this paper proposed a multi-label classification algorithm based on structural property preserving policy and correlation learning policies. Firstly, the algorithm constructed a mapping function to realize the mapping between the feature space and the label space. Secondly, it used structural property preserving strategy based on feature data to reduce the difference between feature data caused by linear transformation. Finally, this paper introduced the correlation learning strategy based on label data to further optimize the parameters of the proposed algorithm to improve the classification performance. The experimental results through a group of benchmark instances show that compared with the other classical multi-label classification algorithm, the proposed algorithm is much superior in classification performance, and the algorithm has great effectiveness. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Computer Engineering & Applications is the property of Beijing Journal of Computer Engineering & Applications Journal Co Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal Of Sichuan University (Natural Sciences Division) / Sichuan Daxue Xuebao-Ziran Kexueban is the property of Editorial Department of Journal of Sichuan University Natural Science Edition and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Liquid Crystal & Displays is the property of Chinese Journal of Liquid Crystal & Displays and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of New Architecture is the property of New Architecture Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electric Machines & Control / Dianji Yu Kongzhi Xuebao is the property of Electric Machines & Control and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A complex, adaptive human-earth system has been rapidly emerging multidisciplinary endeavor to understand the structure and functioning of the Earth as a system. This study aims to quantitatively explore the temporal and spatial evolution of agricultural production function in the watershed of Loess Plateau, particularly under the background of rural vitalization and transformation reconstitution in recent years. The study area was selected as the Nianzhuang watershed in Baota County, Yan’an City, Shaanxi Province of China. The data was also collected from the remote sensing images and the field surveys during five periods from 1985 to 2018. The results show that: 1) The quantitative diagnosis system presented an excellent performance to identify the spatial pattern of gully agricultural production function. The dynamic evolution monitoring also sensitively represented the “multi-path” evolution path of gully agricultural production function, where the “economic-society” and “resource-ecology” were oriented to dominate from the “single-path” at the beginning. 2) The function space of gully agriculture was changed from the traditional to modern agricultural production in the study area from 1985 to 2018. Among them, the year 2012 was the turning point for the transformation of the gully production function. The modern agricultural production function of the gully was also characterized by “relatively stable - small expansion - sharp increase” with the ever-increasing functional diversity, compared with the traditional “small expansion - relatively stable - sharp reduction”. As such, a micro case was achieved for the agricultural function transformation in the typical gully region of the Loess Plateau. 3) There was a continuously expanding trend in the scope and intensity of functional space in the modern gully agricultural production. The dominant direction was also varied significantly as time. Taking the center of towns in the basin, there was a concentric belt reduction in the microscopic function of traditional agricultural production. 4) The core goal of high-quality agriculture was addressed for the Loess Hilly and gully region during this time. Specifically, a “three cycles” mode needed to be established for the “four turns” strategies. A new pattern also needed to be promoted for the industrial internal circulation in the Loess Plateau, while the mutual promotion with the double cycles in the Yellow River basin. New kinetic energy and ways were necessary to further optimize agricultural production and innovate management. Meanwhile, the driving force mechanism was utilized to determine the spatiotemporal evolution stage of gully agricultural production in the Loess Hilly and gully region. The findings can be widely expected to enrich the microscopic cases of agricultural regional function transformation in typical geomorphic small basins. Correspondingly, a tradeoff can also be suitable for the “low space-time identity” macro-analysis and the multi-level spatial “circle-belt-region” transects investigation. Therefore, it is of practical significance to optimize the allocation of regional land resources for the micro-land management and rectification of rural transformation, according to local natural conditions. [ABSTRACT FROM AUTHOR]

The live-virtual-constructive (LVC) provides a strong support for the close-range air combat confrontation training. Aiming at the actual decision modeling requirements of blue-side virtual entity, based on the comparative analysis of deep reinforcement learning and classical intelligent optimization methods, the weight space and structure space of neural network are defined from the perspective of optimization theory, and the evolutionary neural network decision model based on intelligent optimization and its solution method are proposed. Firstly, the tactical characteristics of close-range air combat, fighter flight motion model and actual decision modeling requirements are analyzed. Secondly, the key flight state, action space and fitness function are designed to realize the end-to-end perception and decision of the blue-side. Finally, the decision model based on classical genetic neural network and its solution example are given. The results show that the proposed method can realize the function of learning the combat characteristics of the opponent through the confrontation data, and verify the effectiveness of the model and method; at the same time, it has universality for the current intelligent optimization and its improved algorithm, as well as different structure neural networks. [ABSTRACT FROM AUTHOR]

Production-living-ecological space is a typical spatial carrier to coordinate economic, social， and ecological benefits. Its coordinated development has been greatly significant to promote the ecological civilization, even to optimize the spatial planning in land use. However, the spatial function differentiation is still lacking on the different plots in the same land type, particularly in the most current evaluation on the production-living-ecological space. The clustering or coordination degree (CD) is also less sufficient in production-living-ecological space. The purpose of this study is to improve the evaluation system of production-living-ecological space, further to partition its aggregation and coordination degree for the land-use spatial optimization. An integration of multi-source spatial data was implemented to evaluate the functions of production-living-ecological space in different plots with the same land from the grid scale, with emphasis on the perspective of spatial heterogeneity. A systematic analysis was then made on the spatial autocorrelation and trigonometric coordinates. As such, the clustering and coordination characteristics were revealed on the production-living-ecological space on the township scale. Zoning schemes were finally proposed for the optimization of land space. The results are as follows. 1) The high score areas of production space in Hainan Island were concentrated in the coastal cities and counties, indicating the distribution characteristics of "higher around and lower in the middle, higher in the north and lower in the south". There were also differences between the urban and rural production spaces. The high score areas of living space were mainly concentrated in the cities and counties, with the spatial pattern of "small part gathering and most scattered". The high score areas of ecological space were concentrated in the middle, with the distribution characteristics of "higher in the middle and lower around". 2) The Moran's I indexes for the production, life, and ecological space function were 0.569, 0.221 and 0.716, respectively, in Hainan Island obtained from the township scale. It inferred that there was the strongest spatial correlation between the spatial autocorrelation characteristics and ecological space. Therefore, a zoning scheme was proposed for the whole island using the characteristics of spatial clustering. 3) There were great differences in the coordination degree of production-living-ecological space in different towns of Hainan Island. The high value areas were dominated by ecological space and coordinated type, accounting for 51.72% and 43.97% of the total number of towns, respectively. The low value area was dominated by ecology space, accounting for 72.41% of the total number of towns, where no living dominant town was observed. In the case of spatial features, a zoning scheme was proposed for the whole island using the characteristics of spatial coordination. The heterogeneity of spatial functions was effectively identified in the production-living-ecological space for the different plots with the same land type. A specific scheme of production-living-ecological spatial zoning was also proposed from two new perspectives of spatial clustering and coordination degree, suitable for the current practice of land space optimization. An optimization path of production-living-ecological spatial evaluation can provide the zoning schemes, according to the spatial characteristics. The finding can offer a potential decision making for the land space optimization, as well as the construction of free trade port and ecological civilization in Hainan Island of southern China. [ABSTRACT FROM AUTHOR]

Copyright of Tunnel Construction / Suidao Jianshe (Zhong-Yingwen Ban) is the property of Tunnel Construction Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Angle space loss function is often unstable because of it needs to manually adjust the hyperparameters. The number of category labels lead to poor portability of the algorithm. To solve these problems, this paper proposed an adaptive angle space loss function with lower bound judgment and applied it to face recognition. Based on the hypothesis that the facial expression features were distributed in hypersphere space, it made the second derivative of the prediction probability formula zero by analyzing the influence of different hyperparameters on the training results. Then, it calculated the tailed median angle of the current mini-batch. In order to improve the portability of the algorithm, it inferred the lower bound of adaptive hyperparameter by the minimum expected posterior probability of the class center. By evaluating the algorithm on LFW and MegaFace datasets, the proposed method can effectively improve the accuracy of face recognition and the convergence rate of the model. Experiments on Asian-Celeb dataset show that the proposed method has better portability. [ABSTRACT FROM AUTHOR]

Territorial space is the important carrier of urban construction, agricultural activities, and ecological protection. It is necessary to reasonably promote the coordination, moderation, and sustainable utilization of territorial space. The territorial development of different function types has posed serious conflicts on the regional economy and ecological system, especially in karst areas with fragile ecological environment and high poverty rate. Taking Guangnan County, a typical southwest karst area, as an example, this study aims to realize the coordinated development of territorial space in research regions. A series of geospatial modeling and statistical analysis tools were combined to propose the urban-agricultural-ecological functions coordination method, and the “dual evaluations” method of territorial space in karst areas. According to the environment situation of natural resource and regional planning, amendment rules was also formulated for conflict spaces, while a comprehensive optimization method was proposed for function areas of territorial space. This comprehensive method systematically combined the urban-agricultural-ecological functions coordination and the “dual evaluations”, constructed comprehensive optimization patterns of territorial space function areas, and divided different types of territorial space function area in karst areas. The results showed that: 1) In the most suitable level and less, the ecological suitability was the maximum, accounting for 61.21%, which was mainly distributed in the north and east. The suitability of urban development was the minimum, accounting for 27.81%, which was mainly distributed in the middle and south. The suitability proportion of agricultural development was 49.80%, which was mainly distributed in the northeast and east. The carrying capacity of resource and environment was dominated the level VI and V, where the highest level of carry capacity distributed in the northeast and southeast, whereas, the lowest levels of carry capacity in the south, southwest, and northwest. 2) In the optimized function areas of territorial space, seven types of function areas were divided in karst areas. Specifically, the types of function areas related to ecological function dominated in the development of karst areas, accounting for 79.54%. The types of function areas related to urban function were the smallest, accounting only for 2.35%. The areas dominated by urban function were mainly distributed in the middle and southeast, whereas, the areas dominated by agricultural function were mainly distributed in the north, west, and east, as well as the areas dominated by ecological function were mainly distributed in the north and south. 3) Compared with the urban-agricultural-ecological functions coordination method and the "dual evaluations" method, the comprehensive method could more accurately and rationally construct the spatial patterns of territorial space for karst areas. This proposed method can provide an important decision-making support to delimit different areas in karst areas for territorial space planning and ecological restoration. The reasonable layout for different function types of territorial space can provide a sound reference to improve ecological environment, the management of rocky desertification, and the coordinated development of territorial space in karst areas. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Jilin University (Science Edition) / Jilin Daxue Xuebao (Lixue Ban) is the property of Zhongguo Xue shu qi Kan (Guang Pan Ban) Dian zi Za zhi She and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective: To describe the occurrence of cognitive impairment in hypertrophic cardiomyopathy (HCM) patients and explore possible influencing factors associated with cognitive impairment. Methods: 198 patients with HCM, who were admitted in the department of ultrasound, Xijing Hospital of Air Force Medical University from April 2018 to July 2019, were collected. Both Montreal Cognitive Assessment (MoCA) test and education years were considered to assess cognitive function of these patients. The cutoff score for cognitive impairment to the present study were 14 for illiterate patients, 19 for patients with 1-6 years of education, and 24 for patients with 7 or more years of education. And according to this criterion, HCM patients were divided into cognitive impairment group (n=37) and normal cognitive function group (n=161). Demographic data and clinical characteristics, life style and history of diseases, echocardiography and cognitive assessment were collected and compared between two groups. Multivariate logistic regression analysis was used to assess the possible risk factors for cognitive impairment in HCMpatients. Results: The incidence of cognitive impairment in HCMpatients was 18.7 %. Patients in cognitive impairment group were older in age (P<0.05), had shorter years of education (P<0.05), poorer cardiac function and diastolic function in left ventricular (P<0.05) and significantly higher pressure of provoked left ventricular outflow tract pressure gradient (LVOT-PG, P<0.05). Besides, patients in cognitive impairment group had lower MoCA score (P<0.05), especially a poorer performance in visual space and executive function and delayed recall (P<0.05). The results of multivariate logistic regression analysis showed that after adjusting for age (OR=14.435, 95 %OR 4.476-46.550; P<0.001) and years of education (OR=5.274, 95 %OR 2.024-13.744; P=0.001), LVOT-PG (OR=3.844, 95 %CI: 1.551-9.524; P=0.004) was an independent risk factor for cognitive impairment in HCMpatients. Conclusion: LVOT-PG can increase the risk of cognitive impairment in patients with HCM. In the clinic, it is necessary to pay attention to the change of LVOT-PG in HCM patients for early prevention of the occurrence and progression of cognitive impairment. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Jilin University (Science Edition) / Jilin Daxue Xuebao (Lixue Ban) is the property of Zhongguo Xue shu qi Kan (Guang Pan Ban) Dian zi Za zhi She and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Based on the functions of production, living and ecological space, a rural development evaluation model was created in this paper for the rural revitalization strategy by using the multi-source data such as remote sensing images, land use status data and POI data. Taking Pinggu District as an example, the development patterns of local villages and regional characteristics were illustrated to provide guidance for rural development and planning under the rural revitalization strategy. The results showed that: (1) Under the influence of topography and industry development, production function of villages in the plain area basically was stronger than that of mountain villages in Pinggu District. However, driven by the emerging industries such as countryside recreation and tourism, some villages in Huangsongyu Town and alongside the Jinhai Lake had obvious advantages in production function. Living function in rural spaces had a similarity in spatial distribution with local economic development level and density of road networks. Unlike the downtown with high quality public services, convenient transportation and pleasant landscape, other units with highly developed living function only had one of these advantages and the living function should be further improved. The spatial pattern of ecological function was basically opposite to that of the production function. The ecological function of the villages in the mountain area was generally stronger than that of villages in the plain area. (2) The district was divided into seven categories functional zones based on the different combination of production, living and ecological function. The spatial distribution of village functions in Pinggu District basically followed the law of "production function playing a dominant role in plains, living function playing a dominant role in downtown and central villages, and ecological function playing a dominant role in mountains". Production-dominated functional zones and ecological-living combined functional zones were in the majority and took up 27.27% and 24.38% areas respectively. Some improvement strategies on how to improve the future priorities were proposed based on characteristics of functional zones to contribute to rural revitalization. It is suggested that production-dominated function zones should actively develop modern agriculture and tourism to promote the revitalization of rural industries; living-dominated function zones should moderately promote the construction of rural public service facilities to make it ecological and suitable for living in rural areas; ecology-dominated function zones should give priority to ecosystem and ensure the exertion of ecological function; those compound functional zones with two or more dominant function types should develop by considering spatial characteristics of itself and the surrounding villages; those function zones where the production, living and ecological functions are all at a disadvantage should reasonably carry out the spatial planning and reconstruction of the village based on the development urgency of the functions of production-living-ecological space. [ABSTRACT FROM AUTHOR]

Copyright of Hydrographic Surveying & Charting / Haiyang Cehui is the property of Hydrographic Surveying & Charting Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The relative lack of space and management in university laboratories has become a bottleneck restricting the development of first-rate experimental platforms. Based on the analysis of laboratory utilization, this paper transformed the workstations used by the fixed students into the floating workstations and expanded the flat distribution of instruments to the three -dimensional space to increase the capacity of the laboratories. At the same time, the process of overall planning, auditing and quality control was applied to optimize resource allocation between different disciplines during the construction of experimental platform, and the management system of combining the intelligent experimental management hardware and software, responsibility system and laboratory regulations was developed to improve the efficiency and safety of laboratory operation. By the implementation of the above scheme, the space and functions of the laboratories were expanded, the waste of resources was avoided, and a flexible management system for self-service mode was built. These provided strong supports for talent cultivation and discipline construction. [ABSTRACT FROM AUTHOR]

To study unextendible maximally entangled bases and mutually unbiased bases which play important roles in quantum computation and quantum information processing, the unextendible maximally entangled bases in space C²...C³are studied firstly. Then two sets of mutually unbiased bases from the unextendible maximally entangled bases in C²...C³ are constructed. The general form are presented, which extend the results in and provide more generalized was of constructing. [ABSTRACT FROM AUTHOR]

According to Mordukhovich criterion, the coderivative is the main tool to study the Lipschitz-like property of solution map, so it is theoretical valuable to study coderivatives of solution maps to parametric quasi-variational inequalities. The estimate formula of coderivative of solution map to an equality and inequality constrained parametric quasi-variational inequality is studied. At first, under some calmness conditions, by the description of normal cone, the estimate formula of coderivative of parametric quasi-variational inequality in the index sets style is obtained. Furthermore, under some constraint qualifications of mathematical programming, the sufficient condition ensuring the equality of coderivative and its estimate formula is established. The results obtained can be seen as a supplement to a coderivative description theorem. [ABSTRACT FROM AUTHOR]

Using the Calderon-Zygmund decomposition theory on homogeneous group, we deduce the John-Nirenberg inequalities from European space to homogeneous group and get related corollaries with the help of the result which we have got [ABSTRACT FROM AUTHOR]