An Advanced Analysis of Cloud Computing Concepts Based on the Computer Science Ontology

Our primary research hypothesis stands on a simple idea: The evolution of top-rated publications on a particular theme depends heavily on the progress and maturity of related topics. And this even when there are no clear relations or some concepts appear to cease to exist and leave place for newer ones starting many years ago. We implemented our model based on Computer Science Ontology (CSO) and analyzed 44 years of publications. Then we derived the most important concepts related to Cloud Computing (CC) from the scientific collection offered by Clarivate Analytics. Our methodology includes data extraction using advanced web crawling techniques, data preparation, statistical data analysis, and graphical representations. We obtained related concepts after aggregating the scores using the Jaccard coefficient and CSO Ontology. Our article reveals the contribution of Cloud Computing topics in research papers in leading scientific journals and the relationships between the field of Cloud Computing and the interdependent subdivisions identified in the broader framework of Computer Science.     

OWL‐based acquisition and editing of computer‐interpretable guidelines with the CompGuide editor

Computer‐Interpretable Guidelines (CIGs) are the dominant medium for the delivery of clinical decision support, given the evidence‐based nature of their source material. Therefore, these machine‐readable versions have the ability to improve practitioner performance and conformance to standards, with availability at the point and time of care. The formalisation of Clinical Practice Guideline knowledge in a machine‐readable format is a crucial task to make it suitable for the integration in Clinical Decision Support Systems. However, the current tools for this purpose reveal shortcomings with respect to their ease of use and the support offered during CIG acquisition and editing. In this work, we characterise the current landscape of CIG acquisition tools based on the properties of guideline visualisation, organisation, simplicity, automation, manipulation of knowledge elements, and guideline storage and dissemination. Additionally, we describe the CompGuide Editor, a tool for the acquisition of CIGs in the CompGuide model for Clinical Practice Guidelines that also allows the editing of previously encoded guidelines. The Editor guides the users throughout the process of guideline encoding and does not require proficiency in any programming language. The features of the CIG encoding process are revealed through a comparison with already established tools for CIG acquisition.     

特厚煤层卸压综放开采技术原理的实验研究

我国西部地区发现存有大量20 m以上特厚煤层,大部分无法实现露天开采,国内外均没有成熟的理论与技术可以借鉴,为了实现20 m以上特厚煤层的安全高效开采,创造性地提出了特厚煤层卸压综放开采技术。采用60∶1的大比例相似模拟试验方法,研究20 m以上特厚煤层卸压综放开采顶煤垮落破碎的块体分布特征、顶煤位移场分布特征、支架阻力及其对顶煤垮落破碎的影响等。结果表明:当卸压工作面推进75 cm时,500 cm~3以内的顶煤块体较密集,块体比例约为94%,块体数量约为860个;当卸压工作面推进135 cm时,体积为500 cm~3以内的顶煤块体所占累计比例约为96%,块体数量约为1 700个,与卸压工作面推进75 cm时相比,块体比例增加了2%,块体数量增加了840个;当综放工作面推进17 cm时,累计体积达到500 cm~3时几乎包含全部顶煤块体,块体比例约为99.9%,块体数量约为4 810个,与卸压工作面推进135 cm时相比,块体比例增加了3.9%,块体数量增加了3 110个,二次破碎效果显著,能保证顶煤的顺利放出。卸压开采阶段上位顶煤位移中位顶煤位移下位顶煤位移。二次综放阶段下位顶煤位移最大,垮落破碎程度最好。由于支架的支撑作用,下位顶煤中产生多条明显的竖直裂隙,受支架影响的顶煤厚度约为10 cm,支架的反复支撑作用明显促进了顶煤的破碎效果。     

几座移动式选金厂的生产效果

三年前,地矿部矿产综合利用研究所研制成功移动式选金装置,并设计建成了一些移动式选金厂,取得了良好结果。本文介绍了几个处理量为10—50t/d移动式选金厂的运行状况,着重讨论了所处理的矿石性质、工艺流程及获得的生产技术指标或设计指标。     

钾长石制取钾肥的研究进展及前景

简要介绍了我国和世界钾盐资源的分布及钾的供需状况,以及缓解我国缺钾局面的主要途径;着重论述了钾长石制钾肥的研究进展;最后阐述了钾长石提钾中存在的问题及发展前景。     

从铜金精矿中湿法综合回收金银铜硫的工艺研究

对铜金精矿热压酸浸-萃取-电积提取铜、浸铜渣氰化提取金银和煤油溶解提取元素硫的综合回收工艺进行了研究。热压浸铜在110℃和0．45MPa氧分压下操作，有价元素综合回收率高，对环境污染小，是一种清洁的湿法冶金工艺，金、银、铜和硫的回收率分别达到98．3％、82．7％、98．1％和99．2％。     

氰化堆浸技术在低品位银矿提取银生产中的应用

氰化堆浸技术在低品位矿提金方面应用广泛,而在提银方面应用较少。区吾银矿采用该技术从低品位矿中提银,取得了成功,值得推广和借鉴。