Exploration of Experimental Teaching Reform in Metallurgical Engineering Based on Equipment Optimization
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Authors:
Qing Zhao¹²³*, Chengjun Liu¹²⁴⁵, Zhongqiu Liu¹², Chunfeng Liu³, Cuilan Zhu⁶ / Guide to Education Innovation / 2026,6(1): 20-27 / 2026-03-20
- Keywords: Metallurgical engineering; Practice-Oriented education; Experimental teaching; Equipment optimization; Controlled atmosphere melting point and melting rate testing
- Abstract: In the context of the vigorous advancement of China’s “Double First-Class” initiative, upgrading experimental teaching equipment in metallurgical engineering holds significant importance for enhancing undergraduate experimental teaching quality and strengthening talent cultivation. The School of Metallurgical Engineering at Northeastern University has optimized experimental procedures, improved efficiency, and enhanced data accuracy by updating and adding instrumentation for courses such as Engineering Thermodynamics, while introducing computer-controlled systems and data acquisition systems. Addressing the limitation of the original melting point and melting rate tester, which lacked atmosphere control capabilities, a controlled-atmosphere testing chamber was independently designed and developed. This enables melting point and melting rate testing and analysis under controlled atmospheric conditions, accurately measuring the melting points and melting rates of various metallurgical materials with complex compositions and differing properties. It provides more reliable data support for related research and experimental teaching.
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Funding
孤独症幼儿早期数学能力的结构分化及其认知预测
Structural Differentiation and Cognitive Predictors of Early Mathematical Ability in Preschool Children with Autism Spectrum Disorder
- Authors:
- Keywords: Autism spectrum disorder; Early mathematical ability; Number sense; Working memory; Inhibitory control; Longitudinal study孤独症; 早期数学能力; 数感; 工作记忆; 抑制控制; 纵向研究
- Abstract: Objective: This study aimed to examine the structural differentiation of formal and informal mathematical abilities in preschool children with autism spectrum disorder (ASD) and to investigate the differential predictive roles of number sense and domain-general cognitive factors. Methods:A 6-month longitudinal design was employed. Forty-eight children with ASD aged 3–6 years were assessed at two time points. At baseline, number sense, working memory, and inhibitory control were measured. Six months later, formal and informal mathematical abilities were assessed. Hierarchical regression analyses were conducted after controlling for intellectual functioning. Results: (1) Informal mathematical ability was significantly correlated with working memory (r=0.700,p<0.001), inhibitory control (r=0.471,p=0.001), and number sense (r=-0.508,p<0.001). Formal mathematical ability was significantly correlated with working memory (r=0.613,p<0.001) and number sense (r=-0.521,p<0.001). (2) After controlling for verbal and performance IQ, working memory (β =0.574,p<0.001) and inhibitory control (β =0.332,p=0.002) significantly predicted informal mathematical ability, whereas the predictive effect of number sense was not significant (β =-0.218,p=0.054). In predicting formal mathematical ability, both working memory (β =0.377,p=0.017) and number sense (β =- 0.309,p=0.031) showed significant unique contributions, whereas inhibitory control was not significant. Conclusion: Formal and informal mathematical abilities in preschool children with ASD demonstrate structural differentiation in their cognitive predictors. Informal mathematical ability mainly relies on domain-general cognitive resources, whereas formal mathematical ability reflects the joint contribution of number sense and domain-general factors. The findings provide empirical support for dimension-specific assessment and targeted educational intervention in early mathematics for children with ASD.目的：在区分正式与非正式数学能力的基础上，考察数感与一般认知因素对孤独症幼儿早期数学能力的差异化预测作用。方法：采用6个月追踪设计，对48名3-6岁孤独症幼儿进行两次测评。基线测量数感、工作记忆与抑制控制，6个月后测量正式与非正式数学能力，在控制智力水平后进行分层回归分析。结果：（1）非正式数学能力与工作记忆（r=0.700，p<0.001）、抑制控制（r=0.471，p=0.001）及数感（r=-0.508，p<0.001）显著相关；正式数学能力与工作记忆（r=0.613，p<0.001）和数感（r=-0.521，p<0.001）显著相关。（2）在控制言语智力与操作智力后，工作记忆（β=0.574，p<0.001）与抑制控制（β=0.332，p=0.002）显著预测非正式数学能力，而数感预测作用不显著（β=-0.218，p=0.054）；在预测正式数学能力时，工作记忆（β=0.377，p=0.017）与数感（β=-0.309，p=0.031）具有显著独特贡献，而抑制控制不显著。结论：孤独症幼儿正式与非正式数学能力在认知预测机制上存在结构分化。非正式数学能力主要依赖一般认知资源的支持，正式数学能力则体现数感与一般认知因素的协同作用。本研究为孤独症幼儿数学能力的分维度评估与针对性教育干预提供了实证依据。
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Funding
人工智能专业“随机信号分析”教学实施创新——兼谈简明音乐艺术赋能新工科课堂教学
Innovative Teaching in “Stochastic Signal Analysis” for the Major of Artificial Intelligence — Concurrent Discussion on Concise Music Art Empowering New Engineering Classroom Teaching
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- Keywords: Artificial intelligence; Stochastic Signal Analysis; Teaching innovative; Concise music art; Accordion人工智能; 随机信号分析; 教学创新; 简明音乐艺术; 手风琴
- Abstract: Taking the teaching of undergraduate courses such as “Stochastic Signal Analysis” for students majoring in artificial intelligence in higher education institutions as a blueprint, practical effects of reasonably introducing concise music art are explored to empower new engineering classroom teaching in correspondence with classical compositions of accordion solo. By analyzing the procedure of implementation, evaluation of effects and long-term planning, innovative teaching strategies are advocated to combine concise musical art to stimulate the interests of learning for students and enhance their awareness on active innovation. Statistical data and practical experience indicate that this style of innovative teaching may help students improve their scientific and humanistic qualities, facilitate their mastery of course knowledge, and strengthening abilities on interdisciplinary application, which also expands refreshed ideas for the construction of curriculums on new engineering majors.本文以高等院校人工智能本科专业“随机信号分析”等课程教学为蓝本，结合经典手风琴独奏曲目，探讨引入简明音乐艺术赋能新工科课堂教学的实践效果。通过分析实施过程、效果评估与远景规划等教学内容，倡导融合简明音乐艺术的教学创新策略，激发学生学习兴趣、提升主动创新意识。统计数据与实践表明，该教学创新模式有助于学生完善科学人文素养，促进其掌握课程知识，增强跨学科应用能力，为新工科专业课程建设拓展新思路。
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Funding
伦坡拉盆地丁青湖组沉积期古水体环境恢复及其地质意义
Reconstruction of Paleowater Environment and Its Geological Significance of the Dingqinghu Formation in the Lunpo La Basin
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- Keywords: Oil shale; Pyrite; Lunpola Basin; Dingqinghu Formation; Organic matter enrichment油页岩; 黄铁矿; 伦坡拉盆地; 丁青湖组; 有机质富集
- Abstract: As the only basin with industrial oil flow in Tibet, the Lunpola Basin in the study area is rich in oil shale and has great research value. From the analysis of previous studies on the Lunpola basin, it is concluded that the Lunpori area with a large amount of oil shale is an ideal area for studying organic matter enrichment, but the detailed relationship between the paleo‑depositional water environment and organic matter enrichment is not clear, and there are few discoveries and studies on pyrite in the area. In this paper, based on the description of layer section and profile analysis to recover sedimentary phases in Lunpori area, the relationship between organic matter enrichment and paleosol sedimentary environment is carefully explored by the characteristics of pyrite fugitive morphology, grain size and distribution combined with TOC measurement. It is found that the morphology of pyrite and the particle size distribution of strawberry pyrite indicate that the oil shale section was deposited in an anoxic and sulfidic environment, and the TOC content indicates that the oil shale section was enriched with a large amount of organic matter. Combined with previous studies on organic matter sources in the Dingqinghu Formation of the Lunpola Basin, the large amount of organic matter sources and the anoxic and sulfidized sedimentary water environment are the main controlling factors for the organic matter enrichment in the Lunpori oil shale section.研究区伦坡拉盆地作为西藏地区唯一发现有工业油流的盆地，该地区伦坡日剖面发育有油页岩且十分丰富，具有极大的研究价值。从前人对伦坡拉盆地的研究分析得出，拥有大量油页岩的伦坡拉盆地是研究有机质富集较为理想的区域，但是详细的古水体沉积环境和有机质富集的关系尚不清楚，且前期对该地区黄铁矿的发现和研究较少。本文在对伦坡日地区进行层段描述和剖面分析恢复沉积相的基础上，通过黄铁矿的赋存形态、粒径大小和分布情况等特征结合TOC的测量细致探讨有机质富集与古水体沉积环境的关系。通过研究和实验发现，黄铁矿形态和草莓状黄铁矿粒径分布情况指示油页岩层段沉积古水体环境为缺氧环境和硫化环境，TOC含量指示油页岩层段有大量有机质富集。结合前人在伦坡拉盆地丁青湖组有机质来源的研究，大量的有机质来源和缺氧、硫化的沉积水体环境是伦坡日油页岩层段有机质富集的主控因素。
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柴达木盆地东坪地区变质岩型基岩气藏岩性控储特征
Characteristics of Reservoir Spaces and the Influence of Lithology on Reservoir Development in the Basement Gas Reservoir of the Dongping Well Block, Qaidam Basin
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- Keywords: Qaidam Basin; Dongping area; Basement gas reservoir; Metamorphic rock reservoir; Reservoir space; Lithological control on reservoir柴达木盆地; 东坪地区; 基岩气藏; 变质岩储层; 储集空间; 岩性控储
- Abstract: The Dongping area has become an exploration hotspot due to the discovery of China’s first metamorphic rock-type bedrock gas reservoir. This region also serves as one of the key targets for natural gas exploration in the eastern segment of the Altun piedmont within the Qaidam Basin. However, systematic research on the characteristics and controlling factors of its bedrock reservoirs remains relatively limited at present. Based on core observations and thin-section identification, combined with whole-rock Xray diffraction analysis, scanning electron microscopy microanalysis, statistical calculations of surface porosity–fracture ratio, and analysis of conventional logging data, this study conducts an indepth investigation into the lithological characteristics, reservoir space features, and their influence on reservoir development of the bedrock gas reservoir in the Dongping area of the Qaidam Basin. The results indicate that the bedrock reservoir rocks in the Dongping area are mainly composed of ortho-metamorphic rocks, including granitic gneiss and plagioclase gneiss, as well as para-metamorphic rocks such as quartz schist, calcareous gneiss, slate, calcareous schist, and metamorphic limestone. The reservoirs are of fracturepore type, with an average porosity of about 2.5% and an average permeability of approximately 0.02 mD. Among the ortho-metamorphic rocks, granitic gneiss represents the favorable reservoir lithology, whose reservoir space is primarily derived from tectonic fractures formed in brittle minerals such as quartz and feldspar under structural stress. In para-metamorphic rocks, slate is the favorable reservoir lithology, and its reservoir quality mainly benefits from dissolution pores, vugs, and fractures developed in easily soluble carbonate minerals dominated by calcite. The findings of this research provide important guidance for further exploration of the bedrock gas reservoir in the Dongping area.东坪地区因发现我国首个变质岩型基岩气藏而成为勘探热点，该区域亦是柴达木盆地阿尔金山前东段天然气勘探的核心靶区之一，但现阶段关于其基岩储层特征及主控因素的系统性研究仍较为欠缺。在岩心观察、薄片鉴定的基础上，结合全岩X射线衍射分析、扫描电镜微观分析、样品面孔-缝率计算统计和常规测井资料分析，本研究对柴达木盆地东坪地区基岩气藏岩性特征、储集空间特征及其对储层发育的影响进行了深入研究。结果表明，东坪地区基岩储层岩石类型主要为花岗片麻岩、斜长片麻岩两类正变质岩和石英片岩、钙质片麻岩、板岩、钙质片岩、变质灰岩等副变质岩。储层为裂缝-孔隙型，储层平均孔隙度在2.5%左右，平均渗透率在0.02mD左右。正变质岩中储层优质岩性是花岗片麻岩，储集空间主要来自石英、长石等脆性矿物因构造应力而形成的构造缝；副变质岩中储层优质岩性为板岩，储集性能主要得益于以方解石为主的易溶性碳酸盐矿物发育的溶蚀孔、洞和溶蚀缝。该研究成果对指导东坪地区基岩气藏下一步勘探具有重要指导意义。
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