决定AlGaInP高亮度发光二极管光提取效率的主要因素

影响发光二极管光提取效率的主要因素

基于建库数据的地形图制图出版技术探讨/Research on Digital Topographic Map Cartography and Publishing Based on Spatial Data[J]

在数字制图环境下,传统纸质地图以其"固定"信息方式在人们获取地理信息方面还是存在着不可替代的优势,尤其纸质地形图用于宏观规划、区域建设还有很大需求.本文在阐述GIS建库数据与出版印前数据的差异性及转化过程的基础上,介绍了在当前大多已先期制作建库数据的测绘生产背景下,一种基于地形图建库数据制图出版的技术方案,重点探讨在生产应用中的关键技术,并分析评价该技术路线的实效性

基于遥感与GIS的干旱区石油城镇用地扩展分析——以克拉玛依市独山子区为例/Expansion of Urban Landuse in a Petroleum Town of Arid Region Based on RS and GIS -A Case of Dushanzi District of Klamayi City[J]

以克拉玛依市独山子区为例,采用1989年、1999年、2006年三期Landsat TM遥感图像数据为基础数据源,在遥感和GIS技术的支持下,阐述了提取研究时段内城镇用地扩展数据的技术路线,并结合城市地理学方法,进一步对城镇空间扩展进行了定量分析,结合社会经济统计数据,对独山子区城市用地扩展驱动力进行了尝试性分析,并对以后城市扩展提出对策,以期探讨遥感与GIS技术用于城市地理学的方法和过程

基于GEOWAY DPS的新疆基础测绘项目DLG生产优化研究/Research on DLG Production Optimization of Xinjiang Foundation Surveying Project Based on GEOWAY DPS[J]

基础测绘项目是当前各级政府大力推进与实施的一项基础性、前期性工作。结合新疆基础测绘项目1∶10 000数字线划图（DLG）的生产实践,在分析当前项目运行问题的基础上,探讨了一种基于GEOWAY DPS的DLG＂内外业一体化＂＂采编一体化＂的生产流程,通过对其技术方案、功能的阐述,并与现行常规作业在时间周期、质量控制方面相比较,分析评价其在生产技术上与组织管理上具有的优势与实用性,并进一步指出了其运用要求及应用前景

土地利用数据用于景观格局分析的研究/Land Use Data Application to Landscape Pattern Analysis[J]

在阐述景观格局定量分析的基础上,探讨了土地利用现状数据用于景观格局分析的整合内容、过程及方法,并例举了用于景观格局分析的计算方法与分析,以期说明土地利用数据的多元应用性

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies