塔里木灌区栽培红地球葡萄气候条件的分析

为塔里木灌区产业调整,发展红地球葡萄生产的气候适应性提供理论依据。利用阿拉尔市气象局1961-2003年气象资料,计算了灌区红地球葡萄生长发育阶段的主要气候指标并与参考文献进行比较,分析评价了灌区栽培红地球葡萄的气候适应性。结果表明：灌区红地球葡萄生育期间日照时数、日照百分率,≥10℃活动积温、无霜期、各生育阶段的温度,降水量等气候条件符合其生长发育的要求。灌区在生长发育阶段的气候条件适宜红地球葡萄栽培。春季的倒春寒、沙尘暴、扬沙天气和秋季的冷空气活动、降水天气对红地球葡萄的产量、品质有明显不利影响。     

基于ArcObjects的房地产三维导购系统的研制

利用采集到的楼盘相关地形图、航片、平面设计图和属性数据，运用虚拟现实建模技术，编程实现了基于ArcObjects的房地产三维导购系统。此系统可让用户进行室内室外的漫游浏览，通过视觉和感觉上的沉浸感，身临其境的观察、了解和体验虚拟居住环境，从而做出正确的购房选择。     

3维地学模拟与虚拟矿山系统

3维地学模拟（3D Geoscience Modelling，简称3DGM）与虚拟矿山系统（Virtual Mine System，简称VMS）是数字矿山（Digital Mine，简称DM）战略实施的关键技术，其中3DGM是VMS及所有真3维地学虚拟现实系统的基础。基于国内外VMS研究与应用分析，指出目前2．5维VMS的缺陷和不足；同时，对当前国际学术界3DGM理论与方法进行了评析。进而，从3DGM与VMS耦合的角度出发，提出了一种新的3DGM方法：类三棱柱（Analogic Tri-Prism，简称ATP）法。ATP模型由点、TIN边、TIN面、棱边、侧面TIN和ATP体共6组基本元素组成。本文设计了ATP的数据结构，并给出了基于实验钻孔的3DGM可视化图。     

虚拟数字视频积分器的研制及应用

从理论和实际两个方面具体的论述了虚拟数字视频积分器的原理和研制过程，简化了数字天气雷达系统的强度场数字处理终端。把所有的数字处理和计算交给电脑完成、从而用虚拟的终端代替了原来的数字视频积分器(DVIP)。     

Navigating through SPASE to heliospheric and magnetospheric data

Virtual observatories have been introduced by the astrophysics community as an environment connecting distributed data sources with a unified interface. The heliophysics community soon recognized that they faced a similar problem of many distributed data sets with varying amount of information about them and several discipline specific virtual observatories have been established. Two of them, the virtual heliospheric observatory (VHO) and the virtual magnetospheric observatory (VMO), share a common architecture design with development efforts oriented towards a structured data search. This paper describes the VHO/VMO middleware and its components from metadata preparation and processing to the user interface.     

明代浑象的复原研究

明代正统七年制成的四件大型天文仪器浑仪、简仪、圭表和浑象,其中前三件完好地保存在紫金山天文台上,成为国家重点文物而驰名中外。唯有浑象因为在清朝初年不幸被毁,无缘见其面貌。为了展示明代天文仪器制作成就的全貌,我们对明代浑象进行了复原研究。在考查和分析大量古代天文史料和有关古籍后,我们对该浑象所表现的天文内容、各部尺寸、机械结构、以及外部装饰都做了深入探索。在此基础上,我们绘出了复原制作的工艺草图,作为技术部门施工时的依据。本文系统介绍复原研究中的文献考证、设计过程、以及复原制作工作情况。为了真实地反映此项研究的历史面貌,文中给出五张手绘的设计草图,以资存照。据此复制的明代浑象,现在陈列在紫金山天文台南京天文历史博物馆中。     

虚拟现实及其在军事测绘与作训模拟中的应用

虚拟现实是由计算机生成的人造环境或对象,它可以与操作者交互,构成一个封闭的系统,使人有身临其境之感。这一技术扩展了人的认知手段和范围,改变了传统的仿真与模拟方式,已引起了各个专业领域的重视。测绘工程为虚拟现实技术提供了理论、方法和数据基础,并应把这一技术作为下一世纪测绘保障的新手段而给予重视和开发。     

Petrogenesis of the Paleoproterozoic basalt–andesite–rhyolite dyke association in the Carajás region, Amazonian craton

Paleoproterozoic basaltic, andesitic and rhyolitic dykes crosscut the Archaean Carajás basement. Basalts are distinguished into a high and a low TiO₂ group (HTi and LTi), each group consisting of geochemically distinct NE- and NW-trending swarms. The HTi dykes are evolved transitional basalts having essentially EMORB-type geochemistry. The LTi basalts are tholeiites (NE-trending swarm) and high-Al basalts (NW-trending swarm) displaying incompatible trace elements patterns with variably negative Nb anomaly, enrichment in Rb, Ba, K (LILE) and La, Ce and Nd (LREE) and positive Sr anomaly. With respect to orogenic analogues, andesites have lower Al₂O₃, CaO and Ni, higher FeO, LILE, LREE, Nb, Zr and Ti and negative Sr anomaly. Rhyolites have geochemical characteristics comparable with those of A-type granites. At 1.8 Ga, ranges from 0.700 to 0.705 in the HTi basalts and from 0.700 to 0.704 in the LTi group. Andesites define an isochron of 1874±110 Ma (Sr_o=0.7038±0.0010). Rhyolites from Southern and Northern Carajás define two isochrons of 1802±130 Ma (Sr_o=0.7062±0.0046) and 1535±82 Ga (Sr_o=0.7625) respectively, the younger date being interpreted as resetting of the Rb–Sr isotopic system. We propose a petrogenetic model relating LTi basalts with melting of lithospheric mantle metasomatized by acid melts derived from incipient melting of eclogites, representing in turn the subsolidus product of basaltic batches trapped in the mantle. The HTi basalts are explained by melting of the lithospheric mantle containing the complementary residual eclogite. Andesite petrogenesis is consistent with crystal fractionation from a high-Mg andesite parent derived from a mantle source more extensively metasomatized by eclogite-derived melts. Rhyolite composition is consistent with low melting degree of the basement rocks. The basalt–andesite–rhyolite dykes may represent the effects of crustal extension and arching in Carajás, which produced the anorogenic acid to intermediate magmatism (Uatumã group) and affecting a large part of the Amazon craton between 1.85 and 1.7 Ga.     

Compound[ing] disasters in Puerto Rico: Pathways for virtual transdisciplinary collaboration to enhance community resilience

Puerto Rico has been subject to complex and compounding effects of multiple disasters, exacerbated by sociopolitical, climactic, and geographical challenges that complicate relief and resilience. Interdisciplinary teams are uniquely suited to traverse emerging challenges in post-disaster settings, but there are few studies that leverage transdisciplinary skill sets and virtual co-production of knowledge to build on local autonomous responses. Communities are key sources of information and innovation which can serve as a model for recovery amidst disaster. Thus, an interdisciplinary team of emerging scholars collaborated with Caras con Causa, a local organization in Cataño, Puerto Rico, to develop processes for enhancing autonomous responses to disaster events through participatory pathways, specifically highlighting local knowledge and preferences. The results of this collaboration include: (1) an iterative process model for transdisciplinary co-production in virtual settings and (2) key highlights from post engagement reflections including community-scale definitions of disaster, and limitations to virtual collaboration amidst disaster. Together, these results yielded critical insights and lessons learned, including recommendations for improved project communication methods within transdisciplinary and virtual collaborations. Collectively, the process, it’s resulting products, and the post-engagement reflections demonstrate a pathway for scholars and community members to engage disaster resilience challenges. These strategies are most effectively practiced through focused collaboration with community stakeholders and are paramount in solving real-world challenges related to the increasing complex of compounding disasters.