摘要：LCO_2(liquid CO_2) can absorb heat and release latent heat via phase transition, which can provide considerable cooling energy and effectively solve the problem of thermal damage in deep coal mining processes. A LCO_2 cycle refrigeration system is designed to continuously cool down the working face in a mine, and CO_2 is cyclically utilized. Additionally, LCO_2 is used not only as a cold source but also to prevent spontaneous combustion of coal in the gob. COMSOL Multiphysics simulation software is used to characterize the thermal performance of the heat exchange system, where the heat transfers between the CO_2 and the airflow. For a LCO_2 consumption of 13.54 m^3/h, the temperature of the airflow in the tunnel decreases by 7.72°C, and the cooling volume of the system reaches 142.99 kW/h; the cooling volume provides a latent heat release of 46.68 k W/h. The main influencing factors of the refrigeration system, such as ventilation flux, LCO_2 flow, LCO_2 temperature and initial tunnel temperature, are also analyzed quantitatively through the software. The temperature of the steady airflow in the tunnel is proportional to the square of the local fan ventilation flux, and it decreases linearly with an increase in the LCO_2 flow but increases with both the temperature of the LCO_2 and the initial temperature in the tunnel. When the temperature difference between the LCO_2 and wind increases, the heat exchange between the CO_2 and wind intensifies, and the cooling volume increases.

摘要：Standard support vector machines （SVMs） train- ing algorithms have O（l3） computational and O（l2） space complexities, where l is the training set size. It is thus com- /putationally infeasible on very large data *** alleviate the Computational burden in SVM training, we propose an algo- rithm to train SVMs on a bound vectors set that is extracted based on Fisher projection. For linear separate problems, we use linear Fisher discriminant to compute the projection line, while for non-linear separate problems, we use kernel Fisher discriminant to compute the projection line. For each case, we select a certain ratio samples whose projections are adja- cent to those of the other class as bound vectors. Theoretical analysis shows that the proposed algorithm is with low com- putational and space *** experiments on several classification benchmarks demonstrate the effective- ness of our approach.

摘要：对接智能时代数字创意产业发展需求,通过中国特色高水平产品艺术设计专业群的构建,全面梳理数字创意设计产业链与职业教育艺术设计类专业数字化转型的内在联系、课程体系与岗位能力之间的构建逻辑,创新艺术设计类专业"工学商一体化"人才培养模式,探索跨专业领域教学与实训资源的全面整合,为职业教育创意设计与数字技术融合发展提供鲜活案例。

摘要：矿山灾害防治是保障安全生产的前提。金属矿地下矿山近年来越来越关注井下通风安全问题。但因地下矿山通常开拓系统复杂,通风系统工作不稳定,井下风流紊乱,有毒有害气体中毒窒息事故时有发生,严重威胁矿山的安全生产。喀拉通克矿为实现矿井通风智能化调控,系统开展了井下需风量核算、矿井通风三维仿真模拟研究、智能通风系统构架规划等研究,并基于矿山生产现状,建设完成了井下通风智能监测与互馈调控系统,实现了智能通风技术的工程应用。通过研究可知,为满足年产150万t的生产需求,矿山总需风量为240 m^(3)·s^(–1);根据通风模拟仿真,论证了矿山斜坡道设置空气幕的必要性,探明了矿山当前2#与4#风井的主风机不足以满足矿山需风量,并进行了相应的主风机优化选型;基于矿山当前井下通风系统,共设置74处监测点,并通过技术构架搭建、网络拓扑设计、业务架构设计等设计研究工作,完成了矿山智能通风系统研发,实现了井下通风智能检测与调控,提升了矿山安全管理水平。相关成果,能够为国内外类似矿山的智能通风系统构建提供参考与借鉴。

摘要：探索与总结了国家职业教育广告艺术设计专业教学资源库建设方法与经验。通过分析资源库架构搭建到课程体系、课程资源等建设举措及推广应用方法,最终形成了具有鲜明特色的基于“工学商一体化”产教融合的高职艺术设计类人才培养教学资源平台。

摘要：在“互联网+教育”的时代背景下,职业教育的专业课程改革重点在于围绕职业能力的培养,利用云技术创新部署专业教学资源,建成以翻转式课堂为主要形式的线上线下信息化教学技术的协同互建的教学资源课程体系,推动教师、学生和行企专业力量的有效协作。通过分析广告设计与制作专业教学资源库的建设实践,提出以“工学商一体化”人才培养模式为原点的教学资源库建设策略。

摘要：输水渠道作为线性工程对陆栖脊椎动物及其栖息地造成了直接和间接的负面生态影响,其阻隔作用造成栖息地片段化、动物迁移受阻、个体基因交流中断,并可改变动物个体行为、造成动物溺水致死、助长外来物种传播等。在全球范围内,大量的研究聚焦于公路、铁路,针对线性输水工程的相关研究十分薄弱,野生动物的保护措施多借鉴交通工程。本研究梳理了1970年以来国内外发表的相关研究案例,归纳了缓解输水渠道对陆栖脊椎动物生态影响的措施,包括设置保护围网、野生动物通道、逃离设施、植被缓冲带、人工饮水点等,并对其适用条件与范围、建设规格与参数、影响因素等进行了归纳和整理,以期为未来水利工程中野生动物保护措施的设计和环境影响评价、监测工作提供理论支撑。

摘要：论述了诗画在陶瓷首饰瓷面上的设计可行性,提出了陶瓷类首饰设计中基于诗词关键词的设计方向,探索了陶瓷首饰传统诗词意境表达与金属造型设计结合的方法,探索并实施了陶瓷首饰设计案例。

摘要：本文论述了银质陶瓷首饰在设计中,陶瓷与银饰造型的协调关系,以及在制作过程中,陶瓷件与金属镶口的匹配方法及与银饰表面处理的工艺特性。

摘要：在国家推动中华优秀传统文化传承发展的背景下,首饰设计也加大了从单纯的艺术造型向文化内涵转变的创新力度。本文在以传承诗词文化为目的的首饰设计实践过程中,分析了诗词筛选与提炼的过程,探索了诗词首饰设计的方法。