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1. chinaXiv:202201.00125 [pdf]

交互自然性的心理结构及其影响

曹剑琴; 张警吁; 张亮; 王晓宇
Subjects: Psychology >> Applied Psychology

本文通过三个研究探究了交互自然性的心理结构及其影响。研究1通过开展字典检索,文献回顾和专家访谈,得到了包含有9个条目的初始量表。研究2问卷调查了353名智能网联汽车用户,探索性因素分析发现了两因素结构 ("通达舒畅"和"随境应人")。后续分析表明这两个因素对满意度等关键校标有显著独特的预测作用。研究3使用新样本 (n = 349) 验证了双因素模型的稳定性,还发现这两个交互自然性体验维度对推荐意愿、忠诚感等重要变量也有显著预测作用,此外还发现,通达舒畅更多受到基本驾驶辅助系统等功能的影响,而随境引人更多受到交互和智能相关功能的影响。本文进一步讨论了该量表如何用于未来的人机交互研究。

submitted time 2022-01-30 Hits895Downloads359 Comment 0

2. chinaXiv:202202.00002 [pdf]

Optimal bandwidth selection for retrieving Cu content in rock based on hyperspectral remote sensing

MA Xiumei; ZHOU Kefa; WANG Jinlin; CUI Shichao; ZHOU Shuguang; WANG Shanshan; ZHANG Guanbin
Subjects: Geosciences >> Geography

Hyperspectral remote sensing technology is widely used to detect element contents because of its multiple bands, high resolution, and abundant information. Although researchers have paid considerable attention to selecting the optimal bandwidth for the hyperspectral inversion of metal element contents in rocks, the influence of bandwidth on the inversion accuracy are ignored. In this study, we collected 258 rock samples in and near the Kalatage polymetallic ore concentration area in the southwestern part of Hami City, Xinjiang Uygur Autonomous Region, China and measured the ground spectra of these samples. The original spectra were resampled with different bandwidths. A Partial Least Squares Regression (PLSR) model was used to invert Cu contents of rock samples and then the influence of different bandwidths on Cu content inversion accuracy was explored. According to the results, the PLSR model obtains the highest Cu content inversion accuracy at a bandwidth of 35 nm, with the model determination coefficient (R2) of 0.5907. The PLSR inversion accuracy is relatively unaffected by the bandwidth within 580 nm, but the accuracy decreases significantly at 85 nm bandwidth (R2=0.5473), and the accuracy gradually decreased at bandwidths beyond 85 nm. Hence, bandwidth has a certain impact on the inversion accuracy of Cu content in rocks using the PLSR model. This study provides an indicator argument and theoretical basis for the future design of hyperspectral sensors for rock geochemistry.

submitted time 2022-01-30 Cooperative journals:《Journal of Arid Land》 Hits3059Downloads358 Comment 0

3. chinaXiv:202202.00003 [pdf]

Neoproterozoic I-type granites in the Central Tianshan Block (NW China): geochronology, geochemistry, and tectonic implications

SONG Yujia; LIU Xijun; XIAO Wenjiao; ZHANG Zhiguo; LIU Pengde; XIAO Yao; LI Rui; WANG Baohua; LIU Lei; HU Rongguo
Subjects: Geosciences >> Geography

The Central Tianshan Block is one of numerous microcontinental blocks within the Central Asian Orogenic Belt (CAOB) that overlies Precambrian basement rocks. Constraining the evolution of these ancient basement rocks is central to understanding the accretionary and collisional tectonics of the CAOB, and their place within the Rodinia supercontinent. However, to date, the timing and tectonic settings in which the basement rocks in the Central Tianshan Block formed are poorly constrained, with only sparse geochemical and geochronological data from granitic rocks within the northern segment of the block. Here, we present a systematic study combining U–Pb geochronology, whole-rock geochemistry, and the Sr–Nd isotopic compositions of newly-identified granitic gneisses from the Bingdaban area of Central Tianshan Block. The analyzed samples yield a weighted mean Neoproterozoic 206Pb/238U ages of 975–911 Ma. These weakly-peraluminous granitic rocks show a common geochemical I-type granite affinity. The granitic gneisses are calc-alkaline and enriched in large ion lithophile elements (LILEs) and light rare earth elements (LREEs), but they are depleted in high field strength elements (HFSEs); these characteristics are similar to those of typical subduction-related magmatism. All samples show initial (87Sr/86Sr)(t) ratios between 0.705136 and 0.706745. Values for ?Nd(t) in the granitic gneisses are in the range from –5.7 to –1.2, which correspond to Nd model ages of 2.0–1.7 Ga, indicating a role for Mesoproterozoic to Paleoproterozoic rocks in the generation of the granitic protoliths. The documented geochemical features indicate that the protoliths for the gneisses have a similar petrogenesis and magmatic source, which may reflect partial melting of thickened crust with the addition of small amounts of mantle-derived material. The Central Tianshan Block probably constitute part of an exterior orogen that developed along the margin of the Rodinian supercontinent during the Early Neoproterozoic and underwent a transition from subduction to syn-collision compression at 975–911 Ma.

submitted time 2022-01-30 Cooperative journals:《Journal of Arid Land》 Hits2808Downloads264 Comment 0

4. chinaXiv:202202.00004 [pdf]

Spatial variability of leaf wetness under different soil water conditions in rainfed jujube (Ziziphus jujuba Mill.) in the loess hilly region, China

GAO Zhiyong; WANG Xing
Subjects: Geosciences >> Geography

Leaf wetness provides a wide range of bene?ts not only to leaves, but also to ecosystems and communities. It regulates canopy eco-hydrological processes and drives spatial differences in hydrological flux. In spite of these functions, little remains known about the spatial distribution of leaf wetness under different soil water conditions. Leaf wetness measurements at the top (180 cm), middle (135 cm), and bottom (85 cm) of the canopy positions of rainfed jujube (Ziziphus jujuba Mill.) in the Chinese loess hilly region were obtained along with meteorological and soil water conditions during the growing seasons in 2019 and 2020. Under soil water non-deficit condition, the frequency of occurrence of leaf wetness was 5.45% higher at the top than at the middle and bottom of the canopy positions. The frequency of occurrence of leaf wetness at the top, middle and bottom of the canopy positions was over 80% at 17:00?18:00 (LST). However, the occurrence of leaf wetness at the top was earlier than those at the middle and bottom of the canopy positions. Correspondingly, leaf drying at the top was also latter than those at the middle and bottom of the canopy positions. Leaf wetness duration at the middle was similar to that at the bottom of the canopy position, but about 1.463.01 h less than that at the top. Under soil water deficit condition, the frequency of occurrence of leaf wetness (4.92%45.45%) followed the order of top>middle>bottom of the canopy position. As the onset of leaf wetness was delayed, the onset of wet leaf drying was advanced and the leaf wetness duration was shortened. Leaf wetness duration at the top was linearly related (R2>0.70) to those at the middle and bottom of the canopy positions under different soil water conditions. In conclusion, the hydrological processes at canopy surfaces of rainfed jujube depended on the position of leaves, thus adjusting canopy structure to redistribute hydrological process is a way to meet the water need of jujube.

submitted time 2022-01-30 Cooperative journals:《Journal of Arid Land》 Hits2709Downloads247 Comment 0

5. chinaXiv:202202.00005 [pdf]

Isotope implications of groundwater recharge, residence time and hydrogeochemical evolution of the Longdong Loess Basin, Northwest China

LING Xinying; MA Jinzhu; CHEN Peiyuan; LIU Changjie; Juske HORITA
Subjects: Geosciences >> Geography

Groundwater plays a dominant role in the eco-environmental protection of arid and semi-arid regions. Understanding the sources and mechanisms of groundwater recharge, the interactions between groundwater and surface water and the hydrogeochemical evolution and transport processes of groundwater in the Longdong Loess Basin, Northwest China, is of importance for water resources management in this ecologically sensitive area. In this study, 71 groundwater samples (mainly distributed at the Dongzhi Tableland and along the Malian River) and 8 surface water samples from the Malian River were collected, and analysis of the aquifer system and hydrological conditions, together with hydrogeochemical and isotopic techniques were used to investigate groundwater sources, residence time and their associated recharge processes. Results show that the middle and lower reaches of the Malian River receive water mainly from groundwater discharge on both sides of valley, while the source of the Malian River mainly comes from local precipitation. Groundwater of the Dongzhi Tableland is of a HCO3–Ca–Na type with low salinity. The reverse hydrogeochemical simulation suggests that the dissolution of carbonate minerals and cation exchange between Ca2+, Mg2+ and Na+ are the main water-rock interactions in the groundwater system of the Dongzhi Tableland. The δ18O (from –11.70‰ to –8.52‰) and δ2H (from –86.15‰ to –65.75‰) values of groundwater are lower than the annual weighted average value of precipitation but closer to summer-autumn precipitation and soil water in the unsaturated zone, suggesting that possible recharge comes from the summer-autumn monsoonal heavy precipitation in the recent past (≤220 a). The corrected 14C ages of groundwater range from 3,000 to 25,000 a old, indicating that groundwater was mainly from precipitation during the humid and cold Late Pleistocene and Holocene periods. Groundwater flows deeper from the groundwater table and from the center to the east, south and west of the Dongzhi Tableland with estimated migration rate of 1.29–1.43 m/a. The oldest groundwater in the Quaternary Loess Aquifer in the Dongzhi Tableland is approximately 32,000 a old with poor renewability. Based on the δ18O temperature indicator of groundwater, we speculate that temperature of the Last Glacial Maximum in the Longdong Loess Basin was 2.4°C–6.0°C colder than the present. The results could provide us the valuable information on groundwater recharge and evolution under thick loess layer, which would be significative for the scientific water resources management in semi-arid regions.

submitted time 2022-01-30 Cooperative journals:《Journal of Arid Land》 Hits2676Downloads243 Comment 0

6. chinaXiv:202202.00006 [pdf]

Ecological environment quality evaluation of the Sahel region in Africa based on remote sensing ecological index

WU Shupu; GAO Xin; LEI Jiaqiang; ZHOU Na; GUO Zengkun; SHANG Baijun
Subjects: Geosciences >> Geography

Long-term monitoring of the ecological environment changes is helpful for the protection of the ecological environment. Based on the ecological environment of the Sahel region in Africa, we established a remote sensing ecological index (RSEI) model for this region by combining dryness, moisture, greenness, and desertification indicators. Using the Moderate-resolution Imaging Spectroradiometer (MODIS) data in Google Earth Engine (GEE) platform, this study analyzed the ecological environment quality of the Sahel region during the period of 2001–2020. We used liner regression and fluctuation analysis methods to study the trend and fluctuation of RSEI, and utilized the stepwise regression approach to analyze the contribution of each indicator to the RSEI. Further, the correlation analysis was used to analyze the correlation between RSEI and precipitation, and Hurst index was applied to evaluate the change trend of RSEI in the future. The results show that RSEI of the Sahel region exhibited spatial heterogeneity. Specifically, it exhibited a decrease in gradient from south to north of the Sahel region. Moreover, RSEI in parts of the Sahel region presented non-zonal features. Different land-cover types demonstrated different RSEI values and changing trends. We found that RSEI and precipitation were positively correlated, suggesting that precipitation is the controlling factor of RSEI. The areas where RSEI values presented an increasing trend were slightly less than the areas where RSEI values presented a decreasing trend. In the Sahel region, the areas with the ecological environment characterized by continuous deterioration and continuous improvement accounted for 44.02% and 28.29% of the total study area, respectively, and the areas in which the ecological environment was changing from improvement to deterioration and from deterioration to improvement accounted for 12.42% and 15.26% of the whole area, respectively. In the face of the current ecological environment and future change trends of RSEI in the Sahel region, the research results provide a reference for the construction of the ''Green Great Wall'' (GGW) ecological environment project in Africa.

submitted time 2022-01-30 Cooperative journals:《Journal of Arid Land》 Hits3012Downloads735 Comment 0

7. chinaXiv:202202.00007 [pdf]

Spatiotemporal variation of forest land and its driving factors in the agropastoral ecotone of northern China

WANG Shiqing; TAO Zefu; SUN Piling; CHEN Sijia; SUN Huiying; LI Nan
Subjects: Geosciences >> Geography

As an important natural resource, forest land plays a key role in the maintenance of ecological security. However, variations of forest land in the agropastoral ecotone of northern China (AENC) have attracted little attention. Taking the AENC as an example and based on remote-sensing images from 2000, 2010 to 2020, we explored the spatiotemporal variation of forest land and its driving factors using the land-use transfer matrix, spatial autocorrelation analysis and spatial error model. The results showed that from 2000 to 2020, the total area of forest land in the AENC increased from 75,547.52 to 77,359.96 km2 and the changes were dominated by the transformations among forest land, grassland and cropland, which occurred mainly in areas with the elevation of 500–2000 m and slope of 15°–25°. There was obvious spatial agglomeration of forest land in the AENC from 2000 to 2020, with hot spots of forest land gathered in the southern marginal areas of the Yanshan Mountains and the low mountainous and hilly areas of the Loess Plateau. The sub-hot spots around hot spots moved southward, the sub-cold spots spread to the surrounding areas and the cold spots disappeared. The spatiotemporal variation of forest land resulted from the interactions of natural environment, socioeconomic and policy factors from 2000 to 2020. The variables of average annual precipitation, slope, terrain relief, ecological conversion program and afforestation policy for barren mountains affected the spatial pattern of forest land positively, while those of annual average temperature, slope and road network density influenced it negatively.

submitted time 2022-01-30 Cooperative journals:《Journal of Arid Land》 Hits2742Downloads229 Comment 0

8. chinaXiv:202201.00128 [pdf]

边界促进空间导航的认知神经机制

郝鑫; 袁忠萍; 林淑婷; 沈婷
Subjects: Psychology >> Cognitive Psychology

边界是指在人的视野中占据较大比例,且具有立体拓展平面的障碍物,对于人类和动物的空间导航行为具有极大的促进作用。认知发展研究发现儿童早期(1岁半~2岁)通过加工边界的空间几何结构实现物体定位,并且随着年龄的发展逐渐学会利用边界的高度信息(3.1岁~4.7岁)、长度信息(4~5岁)、视觉阻碍性信息(5岁)等完成空间导航。基于这些认知过程,神经影像学研究主要以成人为研究被试,发现大脑中的内侧颞叶和顶叶脑区在边界加工中有着不同功能作用。具体而言,边界的空间几何结构及构成要素(高度、长度和角度)由大脑中的旁海马位置区和压后皮层联合区负责表征;边界的导航可供性由枕叶位置区负责表征;边界绑定的物体位置的学习和提取则由海马负责。但是,仍存在一些研究问题值得未来深入探讨。第一,拓展深化边界促进导航的认知过程及其发展规律。第二,全面揭示边界促进空间导航中广泛涉及的脑功能基础,尤其是内侧颞叶与后顶叶之间的功能交互。第三,密切关注大脑对场地边界与场地中心编码的心理或神经表征的区别和联系。第四,重点考察阿尔兹海默症有关基因易感人群在基于边界导航的行为受损情况。最后,延伸探讨边界在长时记忆、时间知觉、视觉空间、社交网络等领域的影响机制。

submitted time 2022-01-30 Hits1181Downloads364 Comment 0

9. chinaXiv:202201.00127 [pdf]

语言和情境对具体概念感知运动仿真的影响

石如彬; 谢久书; 杨梦情; 王瑞明
Subjects: Psychology >> Cognitive Psychology

具体概念加工中的感知运动仿真是概念表征的核心加工过程。本研究系统探讨了语言因素(语言类型:第一语言和第二语言)和情境因素(知觉情境:空间知觉情境和语义知觉情境) 对具体概念加工中感知运动仿真的影响。实验1采用语义相关判断范式探讨了第二语言加工过程中是否存在感知运动仿真,以及第二语言中的仿真和第一语言中的仿真是否存在差异。研究发现,第二语言加工中依然存在感知运动仿真,但是第一语言的感知运动仿真具有一定的优势。实验2采用语义相关判断范式及其变式,通过2个分实验分别探讨了个体加工概念时空间知觉信息和语义知觉信息对于概念表征过程中感知运动仿真的影响。研究发现,无论是在较弱的空间信息知觉条件下还是在较浅的语义信息知觉条件下,具体概念加工过程中都产生了感知运动仿真。本研究的发现弥补了知觉符号理论未对第二语言中的感知运动仿真提出针对性预测的不足,表明感知运动仿真具有一定的跨语言稳定性。同时,具体概念加工中的感知运动仿真不受空间信息和语义信息的调节,这表明感知运动仿真能在一定程度上自动化产生。

submitted time 2022-01-30 Hits545Downloads335 Comment 0

10. chinaXiv:202201.00124 [pdf]

关于质点动力学的相对性原理的探索

陈驰一
Subjects: Physics >> Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics
Subjects: Astronomy >> Celestial Mechanics

本文着重探索了质点动力学的相对性原理的物理逻辑。通过动力学的因果分析,发现牛顿第二定律之所以存在惯性系和惯性力疑难,根本原因是忽略了参考系动力学的因果对应。参考系的动力学性质应该归结到参考质点上,而人为划分的参考质点和被考察质点在动力学中应该处于完全平等的地位,由此构建出一个不依赖惯性系,且在所有平动参考系保持形式不变的质点动力学方程。至于转动参考系,一方面,惯性力的本质经新形式的质点动力学方程揭示为参考质点的经过质量平权以后的真实受力,已经可以明确和引力在物理上不等效。另一方面,根据因果对应的基本法则,融入转动参考系的物理则必须包含四个不共面参考质点的受力和运动学信息,因此无法和平动参考系中的新形式质点动力学方程统一成一个简洁的方程形式。最后本文提议所有声称已推广到转动参考系的相对性原理值得重新审视,小心求证。

submitted time 2022-01-29 Hits4263Downloads536 Comment 0

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