基于GT-CBR的汽轮机叶片智能CAM系统研发

针对目前小批量、多种类汽轮机叶片的数控加工程序编制效率低、耗时较长的问题,设计了基于GT-CBR的汽轮机叶片CAM系统。该系统依据实际工艺案例与叶片典型特征,利用成组技术生成工艺路线并简化多参数实例推理问题;提出了AHP属性权重法、距离加权的KNN算法与动态阈值算法相结合的策略,实现叶片数控加工工艺参数的实例推理与数控程序自动生成;利用UG/NX API与MySQL数据库开发了汽轮机叶片智能CAM系统原型,并对系统进行了测试,验证了系统的有效性。

Reviews of Metallurgical Technology to Recovery Platinum Group Metals from Secondary Resource in China

China is extremely poor in mineral resources of Platinum Group Metals (PGMs), productive output of PGMs from mineral resource is 2.5 tons per year. At the same time, China is the biggest PGMs consumption country in the world, the mineral resource of PGMs is critical shortage, it shows the importance of recycling the secondary resource of PGMs. Sino-Platinum Metals Resource (Yimen) Co., Ltd. is the leader in recycling of PGMs from secondary resource, and has made outstanding contributions to China PGMs secondary resources recycling. This article elucidates the current situation of secondary resources recovery and development of metallurgical technology for PGMs.

TWO SCHEDULING PROBLEMS IN GROUP TECHNOLOGY WITH DETERIORATING JOBS

This paper considers single-machine scheduling problems in group technology with the jobs' processing times being simple linear functions of their start times.The objective functions are the ~minimizing of makespan and total weighted completion time.Some optimal conditions and algorithms are given and the fact that the problem of total weighted completion times is NP-hard is proved.

基于GT-AHP-DEMATEL的建筑工程项目数字孪生技术应用影响因素研究

为探究影响数字孪生技术在建筑工程项目中应用的因素,在文献研究和专家访谈基础上运用扎根理论(GT)建立起影响因素指标体系,并通过层次分析-决策实验和评价试验法(AHP-DEMATEL)对建筑工程项目数字孪生技术应用影响因素进行分析。结果表明:17项因素中,数字孪生成熟度、支撑数字孪生的技术基础、数字孪生功能、技术应用成本、技术应用后的效益和项目目标是建筑工程项目数字孪生技术应用的关键影响因素。研究结论可为推动数字孪生技术在建筑工程项目中的应用提供策略参考。

Product Drawing Management System Based on Group Technology

With the development and widely used of the compute r technology, the CAD has been more and more used in the process of designing prod uct. The number of the engineering drawings will greatly increase because of the continually appearance of the new products. As a result, it has become a badly needed to be solved problem for us that how to rapidly and efficiently search an d appropriately preserve and manage the drawings. In this paper, a method of bui lding the product drawing management system for extrusion aluminum-type materia ls is discussed. This system is designed for the profile graphic of the aluminou s section material management by using Group Technology (GT) principle. Accordin g to the GT, we developed a classifying-coding system and drawing management sy stem about the extrusion aluminum-type materials through analyzing a large numb er of extrusion aluminum-type materials section drawings. The coding system has realized the flexible coding and hidden coding of the extrusion aluminum-type materials and then enhanced the flexibility and the expansible of the system. By supplying the designer with the human-computer interaction interface the drawi ng management system has been able to resolve many difficult problems such as se arch and manage the existed drawings about the extrusion aluminum-type material s very well. At the same time, it also helps the developing work enhance the abi lity of inheriting by applying this kind of variant method. In a word, with the help of this system we can not only shorten the designing time greatly and reduc e the cost of the product but also research the designing drawings rapidly. In o rder to output the data information related to the part drawing, the system uses the data-exchange standard to which the drawing support-software adapted as d ata-exchange interface. The system is advantageous to building a standard of dr awing design and increasing the efficiency of searching drawing and enhancing th e information management, which have had a base for building the best management system in the future. In addition, the paper has a detailed analysis about the principle of flexible classification code and data structure.

Concept,Grouping and Subgrouping of Ecological Technology

Although modern technology has an important role in human economic and social development,it can result in significant ecological damage.Thus,research has begun to focus on so-called"ecological technologies"to repair the degraded land and fragmented ecological environment and build a green mode of production and development.However,the concept of"ecological technology"is currently ill-defined,given the many different research fields involved.Therefore,here we divide ecological technologies into broad versus narrow technologies in terms of their impact on economic and social development and the related needs of production and ecological governance.We redefine each concept and clarify their aims and extensions,before further dividing them into three groups and seven subgroups,and clarifying the functions of each.The grouping and subgrouping of ecological technology will lay a foundation for the technology selection,collocation,implementation,promotion,monitoring and evaluation of ecological engineering planning and design.

CNTIC Group Developing Technology Trade

Formally founded at the end of 1994,the CNTIC (China NationalTechnical Import ＆ Export Corporation)Group specializes in exporting high-tech,complete plant equipment and mechanicaland electrical products. The group is anexport-oriented enterprise groupcharacterized by technology trade, itsoperating content represents thedevelopmental direction of the exportindustry in China and its founding was ofgreat significance in expanding the exportof technology-intensive products andpromoting domestic scientific andtechnological progress.

理解为残疾人学习的教育技术:福祉技术(Assistive Technology)——访谈约翰霍普金斯大学学者约翰·卡斯特兰尼

随着技术的进步和社会的发展,为残疾人和弱势群体使用的教育技术——Assistive Technology也得到了较快的发展。访谈者参考日本学者后藤芳在其著作《福祉技术入门》中对辅助技术的翻译,在这里将Assistive Technology按照意译翻译为福祉技术。需要指出的是,有很多人将Assistive Technology翻译为辅助技术,为了能够体现新技术对残疾人和弱势群体的关爱和辅助,访谈者的翻译与此一致并考虑了技术使用目的与情境。访谈者通过面对面访谈约翰.霍普金斯大学的约翰.卡斯特兰尼副教授和之后的数次邮件和电话沟通,介绍了国际上福祉技术现状、相关研究、趋势、热点及相关政策;同时介绍了相关的学会、刊物、学者、流派、现状。我们希望本文能够引起更多中国教育技术及相关领域学者对福祉技术的关注、设计以及应用,关注和研究社会弱势群体教育问题。

Application of oxygen-sensing technology to measure seed quality of Ginkgo biloba

Germination tests are currently the most widely used method to evaluate seed quality of Ginkgo biloba L., but they are time-consuming and labor intensive. Oxygen-sensing technology, based on the principle of fluorescence quenching to detect oxygen and assess seed quality was used to rapidly evaluate seed quality of two varieties (Shandong Tancheng 202 and Zhejiang Dafoshou) of G. biloba from five mother plants. Fifteen samples of three vigor levels were produced by accelerated aging treatments. This process was applied in duplicate. A portable oxygen-sensing detector was employed to measure oxygen content during seed germination in a closed system at 25 A degrees C each day until day 14. Four oxygen metabolism indices were calculated: oxygen consumption index, oxygen consumption rate, critical oxygen concentration, and theoretical germination time (T (GT)). Additionally, we tested laboratory germination and field emergence. The results of a one-way analysis of variance and correlation analysis showed that T (GT) was the candidate index to evaluate seed quality of G. biloba. Therefore, the T (GT) value was used to validate the reliability of oxygen-sensing evaluation for Zhejiang Dafoshou seeds kept under four storage conditions. The trend in the change in oxygen metabolism agreed completely agreement with that of seed germination under all storage conditions. The oxygen-sensing test reliably and rapidly assessed seed quality of G. biloba. The germination rate of Zhejiang Dafoshou was accurately predicted by T (GT).

Group Innovation Ability of Agricultural Technological Innovation Strategic Alliance

Agricultural technological innovation strategic alliance, as an important form of strategic alliance, has steadily strengthened the collaborative management among organizations and raised competitive power with the backing of improved group innovation ability. This article studies innovation ability from individual innovation ability to the group innovation ability. Firstly, basic connotation of group innovation ability is to be concluded through the comparison of individual and group innovation ability. Secondly, evaluation index system is to be established based on the influencing factors of the group innovation ability of agricultural technological innovation strategic alliance and evaluation is based on three dimensions, namely organization technological innovation ability, alliance collaborative innovation ability as well as innovation environment. Furthermore, basic methods for promoting the group innovation ability of alliance are to be proposed.

Establishment and Exploration of Functional Party Groups in Science and Technology Institutes under the Academy System:A Case Study of Runze College of Ningxia University

The education and management of college student Party members is the focus of student Party building work in colleges and universities.In the context of students second classroom being conducted in the academy,the management of student Party members should enhance their Party spirit cultivation through improving their self-management and self-monitoring.After the comprehensive reform of Ningxia University,Runze College targeted the characteristics of agricultural majors and set up functional Party groups to enable student Party members to play a pioneering and exemplary role in the second classroom.Runze College relies on the academy system and breaks through the traditional one-way management mode led by Party branch teachers in the second classroom of college students.It leverages the role of functional Party groups in off campus science and technology academies,and integrates Party building work into daily teaching and research and solving agricultural production technology problems for local villagers,achieving the goal of promoting and integrating Party building and business work,and improving each other.

制度压力与企业绿色技术扩散群体行为研究

加快绿色技术扩散能够最大限度地释放创新活力,为生态文明建设提供有力支撑。使用2005-2021年中国A股上市公司绿色专利引用数据探讨企业绿色技术扩散群体行为的存在性、作用机制及实际影响。研究表明,企业绿色技术扩散过程存在显著的行业群体效应,同行企业绿色技术扩散水平提升会强化目标企业的绿色技术扩散意愿;在不同的技术扩散水平、扩散阶段和技术能力上群体效应存在显著差异。将制度压力分为监管、规范和模仿压力,发现3种压力均会激发企业绿色技术扩散的群体行为,并且3种压力具有替代作用,模仿压力替代监管压力,监管压力又替代规范压力,表明企业绿色技术扩散群体行为主要源于竞争而非监管和规范。进一步将企业绩效分为经济绩效和环境绩效,发现企业绿色技术扩散水平提升会改善其经济绩效与环境绩效,群体效应会强化企业对环境绩效的积极影响,抑制对经济绩效的改善作用,研究结论为促进企业绿色技术扩散提供了理论指导与策略参考。

富氧多孔石墨烯薄膜制备及其超级电容器性能

目的改善传统的激光诱导石墨烯薄膜电极本身储电能力差、应用范围有限的问题。方法利用CO_(2)激光扫描自制的高含氧酚醛树脂薄膜制备了一种富氧的多孔石墨烯薄膜电极,并对其进行电化学活化处理,用以增强内部含氧基团的活性和含量,对石墨烯薄膜的形貌、组成以及电化学性能进行了表征。结果在激光的高温高压下,酚醛树脂分解释放的大量气体会使石墨烯薄膜内部形成丰富的纳米孔隙结构,氮气吸附解吸曲线的结果显示其比表面积达到了324m^(2)/g。此外,在酸性电解质下采用电化学激活的方式,能够使石墨烯薄膜内部碳原子上的含氧基团发生转化反应,并且它们与碳原子的键合也为电极提供了更稳定的结构。在电化学性能测试中,石墨烯薄膜上的氧官能团发生高效的可逆氧化还原反应,在0.5 mA/cm^(2)的电流密度下具有高达342.8 mF/cm^(2)的面积比容量,组装成超级电容器后也保持了优异的储能特性和循环稳定性,在0.0589mW/cm^(2)的功率密度下具有5.93μWh/cm^(2)的能量密度。结论利用该方法制备的富氧多孔石墨烯电极材料兼具高稳定性和高比电容的优势,有望在实际应用中为后续赝电容材料的可靠负载和异原子的高含量稳定掺杂提供一种更可靠的石墨烯骨架,为构筑新型高性能储能器件提供了设计思路。

OBE理念下围绕药品生产技术高水平专业群建设推动产教融合人才培养体系构建对策

在推动药品生产技术领域人才培养阶段,需要将OBE理念融入其中,以OBE理念建设药品生产技术高水平专业群,从而推动产教融合人才培养体系构建,从而为药品生产技术领域发展持续性输送高水平人才。所以,在论文中提出了OBE理念下围绕药品生产技术高水平专业群建设推动产教融合人才培养体系构建对策,用以抛砖引玉。

多主体对颠覆性技术采纳行为的动态演化及影响因素——基于演化博弈视角

以参与方有限理性和信息不完全为前提,构建以企业、消费者与政府为核心主体对于颠覆性技术采纳行为的演化博弈模型,从而分析三方对于颠覆性技术采纳的稳定策略,并通过MATLAB进行数值仿真模拟,分析验证该模型具体的演化路径,从而探究三方在颠覆性技术采纳行为博弈过程中决定双方最终策略选择的影响因素。结果表明:(1)企业、消费者与政府等三方主体对颠覆性技术产品的初始态度与接纳倾向会影响的博弈系统的演化路径与结果。(2)对于颠覆性技术企业而言,更高的颠覆性技术产品生产占比有助于缩短颠覆性技术采纳周期,并能提高政府对企业提供扶持的期望;对于政府而言,政府对生产颠覆性技术产品的企业补贴将延长技术采纳周期,同时若政府对生产颠覆性技术产品的企业补贴力度过大将会使政府最终放弃补贴,而政府对购买颠覆性技术产品的消费者补助则在技术采纳过程的前中期进行补助效果明显优于后期补助的效果。

测控技术与仪器专业控制类课程群实验实践教学改革与实践

控制类课程群是测控技术与仪器专业课程体系的重要组成部分,实验实践教学是工程教育的一个关键环节。该文分析合肥工业大学测控技术与仪器专业控制类课程群实验实践教学现状及问题,从课程群课程内容体系、课程实验规划、多元化的实验实践教学、考核与反馈评价机制等环节,提出一系列教学改革措施,建立创新型控制类课程群实验实践教学体系。该文所述方法在教学实践中取得一定的成效,研究成果为其他课程群的教学改革提供很好的参考价值。

族群聚居与住屋形式——工具史视野下青铜时代西南夷聚落建筑的文化技术特色

本文以“族群聚居与住屋形式”合一的视域审视青铜时代西南夷的聚落建筑遗址,论述以氐羌族群为主体的康巴聚落建筑遗址中“柱造土掌与密肋邛笼”的特征,以濮越与苗瑶族群为主体的黔贵聚落建筑遗址中“抬梁穿斗与木栅干栏”的特征,以濮越与氐羌族群为主体的滇云聚落建筑遗址中“木楞井干与干栏合院”的特征,揭示了青铜时代西南夷地区的先民将其游牧渔猎与农业栽培经济相结合,产生了穿斗式、抬梁式、井干式、邛笼式及混合式的聚落建筑空间形式。该住屋形式格局中环绕式的围合感与单向度的向心性隐喻着方国神圣仪式与权力,体现了方国联盟集团的共同利益与意志,是青铜时代西南夷社会文化系统中类“尖锥体”等级结构的物质化产物。

乡村振兴背景下现代农业技术专业群“三教”改革策略与机制研究

高职院校是为社会输送人才的重要基地,涉农高职院校应立足当今时代形势,依托“三教”改革大力推进育人改革,全面提升人才培养质量和水平,以破解乡村振兴人才制约难题。文章从新时代高职院校专业群“三教”改革价值意蕴分析出发,对涉农高职院校专业群“三教”改革中面临的实现困境与动因进行分析,从而提出乡村振兴背景下现代农业技术专业群“三教”改革的策略与机制,以期通过深入开展专业群“三教”改革提高人才培养质量,从而实现涉农高职院校专业群“三教”改革的有效推进。

信息技术类高水平专业群建设项目化管理探究

新一代信息技术产业是我国国民经济的战略性、基础性和先导性产业。因此,以新一代信息技术类专业为研究对象,分析高职院校在高水平专业群建设和管理过程中遇到的问题和困境,从构建专业群共享型课程体系、组建结构化创新团队两个维度探索专业群建设思路,从矩阵型组织结构、全过程管理模式、“双链递进式PDCA”管理三个方面构建高水平专业群项目化管理模型,确保高水平专业群建设高质量完成。

“多元基础、分路径培养”的物流大数据应用型人才培养创新与实践

该文从人才培养模式创新、产教融合提升人才培养质量视角,对大数据本科专业应用型人才培养的多元学科专业基础和培养路径做出分析,进而以物流大数据专业群应用型人才培养为例,通过实施文理文工融合改革思路构建物流大数据复合知识体系,建设“多专业+多课程+多层次+多要求”的大数据实践实训平台、多学科专业融合互促的泛在化教学体系和深化产教研融合,形成多元基础分路径培养的人才培养思路并应用实践。通过物流大数据人才培养改革创新与实践,2021—2023年文理文工融合人才培养模式获得认可,教学成果突出,促进学科专业资源整合,形成“资源-名师-成果”互促上升的发展路径,人才培养质量显著提升,社会认可度提高。