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Analyzed and Trend of the New Hydraulic Drive Hybrid Vehicles Systems ZHOU Peng', Ll Huidong', NlU Ziru?, Wu Xiangji Journal of Kunming Metallurgy College    2025, 41 (3): 84-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０３．０１３ Abstract （18）      PDF（pc） （1196KB）（8）       Knowledge map    Save The typical hybrid technologies and their limitations in energy conservation and emission re.duction are discussed. The layout scheme of the new hydraulic-drive hybrid vehicle , incorporating theAlMS module, is analyzed. The working principle, applications , and key technologies of the AlMS mod.ule are examined in detail. Additionally , the development trends for the new hydraulic-drive hybrid vehi.ele are proposed , including the optimization of AlMS control strategies , improvements in overall vehiclereliability , and the optimization of vehicle costs and market applications. Long-tem prospects are also explored , such as the intelligent automation of vehicles, environmental frendliness , sustainable develop.ment, and the integration of multiple technologies. Related Articles | Metrics

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Research on the Construction of Intelligent Mining Planning TechnologySystem for Mines Based on 3DMine + Self Developed Tools + SuperMap ZHANG Yiding', ZHAO Xin', FU Wanqian’, HUANG Xuelin', ZHANG Libing', BAl Junwen', YANG Wen', Ll Nianrong', YANG Shuowen', ZHENG Yongxin' Journal of Kunming Metallurgy College    2025, 41 (3): 1-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０３．００１ Abstract （24）      PDF（pc） （1665KB）（7）       Knowledge map    Save The concept of “ green sand and gravel, smart mining” has accelerated the nationwide devel-opment of the sand and gravel industry towards scaling and industrialization. Based on the constructionstandards and requirements for the “ green sand and gravel, smart mine” at Chengxi Stone Quarry in Hua-shan Town, Huadu District, Guangzhou City, this study focuses on building a new intelligent miningplanning technology system for green mines. The technology route is based on 3DMine, self-developedtools, and SuperMlap. On the foundation of using 3DMine for constructing sand and gravel mine models,self-developed tools were used to automate the analysis and generation of mining and stripping plans. Finally, using the B/S architecture, SuperMlap was applied to construct and display a digital twin of the in-telligent mining planning results. Through practical verification in the smart mining project of the granitemine for construction in Chengxi Stone Quarry, Huashan Town, Huadu District, Guangzhou City, the in-telligent mining planning technology system based on 3DMine, self-developed tools, and SuperMap isfound to be compatible with the new green sand and gravel industry structure. It demonstrates high engineering implementation value and feasibility, providing new solutions and reference directions for othermining enterprises in the field of intelligent mining planning. Related Articles | Metrics

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Industrial Study on the Reduction Roasting of a Low-Grade Lead-ZincOxide Mine in Yunnan Province Using a Rotary Kiln YANG Zhihong', ZENG Peng’, Ll Yongjia', ZHANG Jinliang Journal of Kunming Metallurgy College    2025, 41 (3): 28-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０３．００５ Abstract （19）      PDF（pc） （1309KB）（7）       Knowledge map    Save 'The existing lead-zinc oxide mines in a certain place are characterized by large reserves , lowgrades, complex mineral compositions , and difieulty in exerting economic benelits. To study the reduc-tion and volatilization laws of low-grade zinc oxide ores, the chemical compositions, occurrence states,.and miero-morphologies of raw materials and produets were analyzed one by one, and the thermodynamicbehavior of the reduction roasting process was discussed. The production process flow of ore blending( adding 2596 reduction coal ) , granulation, drying, reduction roasting, and water quenching was deter-mined through experimental exploration. The Zn vapor volatilized during the reduction roasting processwas cooled and collected in the dust, among which the boiler dust contained an average of 29. 49% 2n,the surface-cooled dust contained an average of 42. 94%6 Zn, and the bag dust contained an average of60. 93%6 Zn. XRD was used to conduet comparative analysis on raw materials and slag, and the resultsshowed that the phases of Zn and Pb in the slag disappeared, indicating that the rotary kiln reductionroasting process can elfeetively volatilize Zn and Pb elements from the raw materials. Through materialbalance calculations, it was found that the total recovery rate of Zn reached 97. 18%6 and the reeoveryrate of Ph reached 96. 30%6 during the industrial experiment of rotary kiln reduction roasting, efficientlyachieving the effective utilization of secondary resources. Related Articles | Metrics

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Research on the Stability of Open-Pit Mine SlopesBased on FLAC?" and Geo-Slope WEN Yiming', FU Xuehui , ZHAO Renshan?, CHENG Yong'WANG Falong’, LlU Zhangzhen’, LU Ping'b Journal of Kunming Metallurgy College    2025, 41 (3): 13-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０３．００３ Abstract （22）      PDF（pc） （1915KB）（6）       Knowledge map    Save The bench slope angle is a eritical structural parameter in the mining of open-pit limestonemines , significantly affecting the mine's safety, stability, and economie benefits. In this study, based onthe new Hoek-Brown strength criterion , the mechanical parameters of the slope were determined as therecommended values for the stability caleulation of the slope rock mass in the open-pit mine. The stabilityof the final end-limit slope was analyzed using FLAc? and Geo-slope software. A comparison and analy.sis of the stability results from the two simulations were performed. Furthermore, considering the lime.stone geological context of the study area, it was ultimately concluded that the final slope angle of theopen-pit bench should be controlled to within 49°, the final bench slope angle should be 65°, the work-ing bench slope angle should be 75°, and the bench height should be 10 meters. The research resultsshowed that the safety factor ( F、) for all open-pit bench slope profiles was greater than 1. 15 , thus meeting the safety grade requirements for Grade lll slope engineering and providing a solid seientific basis andassurance for the safe operation of the mine. Related Articles | Metrics

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Adsorption Studies of Ni?+by Succinic Anhydride AcylatedChitosan Cross-Linked Microspheres NING Mencui, REN Youchang, SONG Yu Journal of Kunming Metallurgy College    2025, 41 (3): 51-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０３．００８ Abstract （10）      PDF（pc） （1788KB）（5）       Knowledge map    Save  Chitosan exhibits chelating and adsorption properties for many substances. Through chemicalmodification , various functional groups can be introduced into chitosan molecules, resulting in chitosanderivatives with different properties , thereby broadening the scope of its applications. In this study, acy-lated chitosan cross-linked microspheres were prepared to investigate their adsorption properties for Ni? +Scanning electron microscopy ( SEM) images indicate that the acylated chitosan microspheres have awell-formed spherical structure. The results of the adsorption experiments show that the optimal adsorption of Ni?* occurred under the conditions of pH =7.0 , a contact time of 60 minutes, and an adsorbentdosage of 0. 07 g for a N;?* solution with an initial concentration of 20 mg/L. Thermodynamic studies in-dicate that the adsorption process of Ni?* onto the acylated chitosan cross-linked microspheres is endo-thermic and spontaneous. Kinetic studies reveal that the adsorption process follows a pseudo-second-orderkinetic model ( R’> 0. 99 ). The adsorption process is controlled not only by the physical adsorption ofN;?+ on the internal and external surfaces of the material but also by the chemical adsorption involving ox-ygen-containing functional groups on the surface. Related Articles | Metrics

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Image Fusion Based on an lmproved Dual-Channel PCNN and NSCT YANG Qing', YANG Guangzhao Journal of Kunming Metallurgy College    2025, 41 (3): 62-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０３．０１０ Abstract （16）      PDF（pc） （1387KB）（4）       Knowledge map    Save An improved dual-channel pulse coupled neural network ( PCNN) is proposed for image fusionto address the challenges of manually setting numerous parameters and processing only one image at a timein traditional PCNN. The enhanced dual-channel model introduces a Gaussian filtering mechanism thatcombines surrounding neurons in a Gaussian distribution , eliminating the need for manually setting synapticweights and link amplification coefficients. Additionally, fractal dimension is used to estimate all other pa-rameters , fully achieving parameter adaptation. As a dual-channel model, it is capable of processing twoimages simultaneously. Two multi-source images are first decomposed into multi-scale representations usingthe non-subsampled contourlet transfom( NSCT ), yielding high-frequeney and low-frequeney sub-bandimages. The high-frequeney sub-bands are fused using the newly proposed improved dual-channel PCNNwhile the low-frequency sub-bands are fiused using an energy-based method. Finally, the fused low-fre.quency and high-frequeney sub-bands are inverse-transformed using NSCT to obtain the final fused image.Experimental results demonstrate that the proposed method offers significant advantages in terms of both vis.ual quality and objective evaluation metrics. Related Articles | Metrics

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Optimization of Fermentation Process and Antioxidant Activity ofPolysaccharides from Stems and Leaves of Polygonatum Kingianum YAO Bo, GUO Yin, WANG Peng Journal of Kunming Metallurgy College    2025, 41 (3): 44-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０３．００７ Abstract （20）      PDF（pc） （2140KB）（4）       Knowledge map    Save Polygonum kingianum from Yunnan were used as raw materials, and composite probiotics wereapplied as fermentation strains. The ratio of material to liquid, inoculation amount, fermentation temperature , and fermentation time were selected as the influencing factors, with polysaccharide yield as the mainindicator. The fermentation process for polysaccharide production was optimized through single-factor experiments and response surface methodology. The antioxidant activity of the polysaccharides was evaluated bmeasuring their ability to scavenge DPPH and hydroxyl radicals. The results showed that the optimal fermentation conditions for polysaccharides were: material-to-liquid ratio of 1:50, inoculation amount of 4%fermentation temperature of 36 9C , and fermentation time of 25 hours. Under these conditions. the yield ofpolysaccharides was 23. 46%6 . The scavenging elfect of the polysaccharides on DPPH and hydroxyl free rad.icals was positively correlated with concentration, with ICs, values for DPPH and hydroxyl radical scavenging being 4. 29 mg/ml, and 2. 68 mg/mL., respectively. The findings indicate that fermentation significant.ly increased the polysaccharide content ( mass concentration) in the stems and leaves of Polygonatum king.ianum , and the fermentation products exhibited strong free radical scavenging activity. Related Articles | Metrics

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Study on Preparation and Properties of Cement-BasedExposed Pervious Concrete HAN Changju Journal of Kunming Metallurgy College    2025, 41 (3): 57-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０３．００９ Abstract （17）      PDF（pc） （1234KB）（3）       Knowledge map    Save The exposedpervious concrete were prepared by means of the following materials: P. 0 42. 5cement, P.S.A 32.5 cement, 10 ~20 mm or 5 ~ 10 mm single-sized gravel, 5 ~20 mm continuous graded gravel, water, water reducer, admixture and reinforcing agent, etc. The performance of the concretewas then studied. The results show that as the aggregate-to-cement ratio increases, the strength of theconcrete decreases and its porosity increases. The concrete mixed with 5 ~ 10 mm gravel exhibits highelstrength than that mixed with 10 ~20 mm gravel. Concrete made with P.0 42. 5 cement has higher porosity than concrete made with P.S.A 32. 5 cement. When the aggregate-to-cement ratio is 2. 76, using5 ~ 20 mm continuously graded gravel and P.S. A 32. 5 cement results in the lowest porosity of perviousconcrete, at only 4.3%. Related Articles | Metrics

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Application of Bamboo Reinforced Soil Subgrade in Rural Road Engineering #br# ZHANG Wei, LOU Guanglong, YANG Leiying Journal of Kunming Metallurgy College    2025, 41 (3): 96-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０３．０１ Abstract （16）      PDF（pc） （1004KB）（3）       Knowledge map    Save Currently, the construction of bamboo reinforced soil subgrades in highway engineering typi-cally involves a single-ayer approach, which limits the extent of reinforcement coverage and makes itchallenging to ensure the quality of roadbed construction in rural road projects. To address this, this pa-per proposes an analysis of the application of bamboo reinforced soil subgrades in rural road engineeringBased on current measurement requirements, the underlying layers will be treated, and a multi-layer approach will be implemented to overcome the limitations of reinforcement coverage. This approach includesthe use of multi-layer gray soil layers and bamboo reinforcement with anti-corrosion measures. On thisfoundation, the application of bamboo reinforced soil subgrades in rural road engineering is realizedthrough the caleulation of reinforced soil and the laying of bamboo reinforcement layers. The test resultsshow that for the selected 7 independent test sections, the roadbed load ratio can reach 5. 5 or higher un-der three preloading stages of 100 kN, 150 kN, and 180 kN, respectively. This indicates that the pro-posed bamboo reinforced soil subgrade method for rural roads is efficient, reliable, and highly targeted.Additionally , the roadbed quality has been significantly improved, providing valuable guidance for practical construction. Related Articles | Metrics

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The Exploration of the Construction Path for the Integration ofTeaching Modes in CNC Technology Programming#br# #br# HAO Zhongbo, Ll Xiaonan Journal of Kunming Metallurgy College    2025, 41 (3): 122-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０３．０１９ Abstract （11）      PDF（pc） （916KB）（3）       Knowledge map    Save  This study aims to explore an effective construction path for the integration of online and oflineteaching modes in CNC technology programming education. Through in-depth analysis of traditionateaching methods and modern remote teaching approaches, combined with educational theory and techno.logical practices, this paper proposes an innovative blended teaching model. Through practical teachingexperiments, this model integrates online interactive platforms with ollline practical operation. electivelenhancing teaching interactivity and improving students’practical operation skills. Experimental resultsshow that the blended model significantly increases students’ learning interests and technical mastery levelcompared to traditional teaching methods, providing a new teaching srategy for CNC technology programming education. This research not only offers a combination of theory and practice in the field of CNCtechnology programming education, but also provides reference for innovative teaching models in otherfields of technical education. Related Articles | Metrics

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On the Transformations of the Concept of Ideology in the Process of Poverty Alleviation in Border Ethnic Minority Areas: A Case Study of a Poor Village CHENG Qiuyong, ZHUANG Qianlin, DOU Jinhuan Journal of Kunming Metallurgy College    2025, 41 (2): 1-.   DOI: 10. 3969/j. issn. 1009 - 0479. 2025.02. 001 Abstract （27）      PDF（pc） （1098KB）（3）       Knowledge map    Save The "Decision on Winning the Tough Battle Against Poverty" has laid a solid foundation for rural revitalization. No one can be left behind on the path to build a well-off society in an all-round way. By issuing questionnaires to poor villages in border ethnic minority areas, and analyzing specific indica- tors, the effectiveness and significance of the transformation of the concept of ideology are demonstrated. Efforts should be made to give full play to the subjective initiative of individuals to help realize the free and comprehensive development of people. Related Articles | Metrics

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Research on the Practice of Popular Science Education in Higher VocationalColleges: Taking Kunming Metallurgy College as an Example LONG Mei°, ZHAO Xia", YANG Tao", CHEN Liping", GuO Yufeng? Journal of Kunming Metallurgy College    2025, 41 (1): 123-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０１．０１８ Abstract （4）      PDF（pc） （7986KB）（3）       Knowledge map    Save To implement General Secretary Xi Jinping's important speech on the “Two Wings" theory andeffectively fulfll the social service functions of higher education institutions, Kunming Metallurgical Col.lege has used popular science education as an entry point. The college leverages educational resourcesfrom the surveying and mapping engineering technology professional group in its “ Double High” construc-tion, focusing on initiatives such as building a popular science volunteer team, establishing science edu-cation bases , developing electronic resources for popular science, promoting school-enterprise collabora.tive science outreach, and fostering open and shared platforms. The college has carried out a series ofpractical activities in popular science education, and this paper discusses the practical processes andmethods involved. lt summarizes the experiences gained and, based on actual circumstances, identifieschallenges such as insufficient interaction between resource and platform development, and inadequateschool-enterprise system linkage. The paper proposes suggestions such as creating distinctive science out.reach brands, strengthening multi-party collaboration, and ensuring continuous and coherent supply olscience resources to better promote the development of popular science education in higher vocational col.leges. Related Articles | Metrics

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The Contemporary Value and Optimization Strategy of Rural Graduates Returning to Hometown for Employment and Entrepreneurship Against the Background of Rural Revitalization KE Qin, SHI Guanqing, YANG Hailan Journal of Kunming Metallurgy College    2025, 41 (2): 5-.   DOI: 10. 3969/j. issn. 1009 - 0479. 2025. 02. 002 Abstract （28）      PDF（pc） （1041KB）（2）       Knowledge map    Save As urban employment pressure rises sharply and rural revitalization speeds up, it is proposed to promote the return of rural-origin college graduates to their hometowns for employment and entrepreneur- ship, which has multi-dimensional value of realizing the revitalization of rural talents, solving the gap of ru- ral talents, alleviating urban employment pressure, and guiding high-quality talents cultivation in colleges and universities. The analysis shows that due to the inertia of traditional education, rural-origin college students still face challenges such as insufficient entrepreneurial willingness to return to their hometowns for employment and entrepreneurship, inadequate university guidance, insufficient governmentpolicy, and poor rural infrastructure. To address these issues, this paper proposes strategies to enhance the confidence and enthusiasm of rural graduates, helping rural areas achieve the goal of talent revitalization. Related Articles | Metrics

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Exploration and Research on the Application of Data Mining in the Work of College Counselors YANG Jing Journal of Kunming Metallurgy College    2025, 41 (2): 32-.   DOI: 10. 3969/j. issn. 1009 - 0479. 2025. 02. 006 Abstract （34）      PDF（pc） （1034KB）（2）       Knowledge map    Save Data mining, as an important tool for big data research, uncovers potential and valuable knowledge from extensive datasets generated in daily production. This knowledge provides decision-mak- ers with the scientific evidence needed to make informed decisions. Giving the heavy workload of college counselors' daily tasks, this article explores how data mining techniques can improve their work efficien- cy. It aims to promote the integration of data mining technology into counselors' daily tasks, thereby pro- moting the transformation of college counseling work towards smart development and digital transforma- tion. This article also analyzes the challenges in combining counselor work with data mining technology, and proposes corresponding solutions. Related Articles | Metrics

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Analysis of the Mechanism of Hierarchical Management in theConstruction Contractors by Repeated Game Theory ZHANG Feng Journal of Kunming Metallurgy College    2025, 41 (3): 88-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０３．０１４ Abstract （21）      PDF（pc） （1002KB）（2）       Knowledge map    Save  Based on repeated game theory, this paper proposes a conceptual model to explain the mechanism of contractor hierarchical management thrugh literature analysis and deductive reasoning , supportedby specific case studies. The research shows that contractor hierarchical management is a method of rela-tional govemanee. This form of governanee provides high-quality contractors with the expectation of con-tinued future cooperation through relational commitment , facilitating the establishment of long-term, sta-ble cooperative relationships with high-quality contractors. This, in tum, imprves project cooperationperformance and maxvimizes the interests of the owner. This study provides a theoretical foundation for thepromotion of the contractor hierarchical management model. Related Articles | Metrics

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Research on the Integration Path of Curriculum-Based Ideological and Political Education in Intellectual Property Law General Courses Under the Studio System of Higher Vocational Education LIU Xiª, YANG Guofub, LI Xiangyingª Journal of Kunming Metallurgy College    2025, 41 (2): 62-.   DOI: 10.3969/j. issn. 1009 - 0479. 2025.02. 011 Abstract （27）      PDF（pc） （1032KB）（2）       Knowledge map    Save   Under the background of deepening reform in higher vocational education in the new era, the organic integration of curriculum-based ideological and political education ( CIPE ) with professional teaching has become a crucial approach to fulfill the fundamental task of fostering virtue through educa- tion. This study addresses existing issues in CIPE implementation within higher vocational general courses and explores teaching reform pathways guided by CIPE principles under the studio system. By establis- hing a reform framework characterized by "goal concretization, path projectization, and evaluation diver- sification", three core strategies are proposed; Identifying ideological and political elements within intel- lectual property law, integrating CIPE objectives such as rule-of-law conviction and integrity-driven inno- vation into curriculum design; Utilizing studio projects as pedagogical vehicles through diverse teaching methods to achieve the synergy of "learning by doing" and "reflection through practice" ; Developing a dual-dimensional evaluation system encompassing "process observation + outcome analysis" and "ability development + value identification" to comprehensively assess students' knowledge acquisition and value internalization. The research demonstrates that this reform framework, driven by practical project tasks,effectively facilitates the deep integration of intellectual property legal knowledge with CIPE objectives.  Related Articles | Metrics

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Semantic-Aware Bloom Filter Based on Large Language Models#br# ZHANG Hao, TAl Mengsiyun, ZHAO Wentao, HE Wei Journal of Kunming Metallurgy College    2025, 41 (3): 101-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０３．０１６ Abstract （18）      PDF（pc） （2443KB）（2）       Knowledge map    Save With the rapid growth of data volume , traditional Bloom Filters face challenges such as highfalse positive rates and limited flexibility when processing large-scale data streams. To improve the accu-racy and eliciency of data stream processing, this paper introduces a semantic-aware Bloom Filter(SABF) based on large language models (LLMs). By leveraging the advanced semantic understandingcapabilities of LLMs, SABF generates semantic embedding vectors for text data and uses this informationto optimize the selection of hash functions and the design of bitmap structures. This enables more preciseidentification of the semantic features within the text data. Experimental results demonstrate that SABFsignificantly reduces the false positive rate, especially as data volume increases, where it lowers the falsepositive rate by over 20%6 compared to traditional methods. Additionally, SABF excels in identifying se.mantically similar documents, achieving an accuracy rate of 83 % , thereby significantly improving the efficiency of processing, complex semantic infommation. This study presents an innovative solution for large.scale text data processing and real-time data stream applications, making a valuable contribution to the advancement of related fields. Related Articles | Metrics

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Analysis of the Deformation and Failure Mechanism of HighSteep Slope Under Repeated Mining of Coal Seam MAO Chaoxun, CHEN Bin, YAO Xiwei Journal of Kunming Metallurgy College    2025, 41 (3): 6-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０３．００２ Abstract （20）      PDF（pc） （4003KB）（2）       Knowledge map    Save The repeated mining of coal seam controls the deformation and failure characteristics of highand steep slopes and directly affects the overall stability of high and steep slopes. In order to deeply studythe influence of high and steep slope on slope defomation under repeated mining action of coal seam,taking Panzhihua Coal Mine in Shuicheng County, Guizhou Province as the engineering background.based on site investigation, combined with UAV photos and engineering geological means, FLAC softwarewas used to study the deformation process of high and steep slope induced by repeated mining of coalseam. The results show that the local collapse of the slope occurs due to the influence of topography andrepeated mining of coal seam, and the deformation failure mode is as follows : slope subsidence-pull frac.ture stage -> slope fracture through-collapse stage. Under the infuence of slope in the coal seam repeat.ed mining and mined-out area at the top of the rock mass downward bending deformation, graduallyformed fracture belt , eventually cave, at the top of the mined-out area as cave rock mass unloading, ver.tical stress decreases, the roof on both ends of caved in unloading arch, and to spread out on both ends.and appear stress concentration phenomenon. With the increase of mining layers, the overall stable stateof high and steep slope develops from stable to less stable state. It can be seen that the repeated mining ofcoal seam has great influence on the stability of high and steep slope. Related Articles | Metrics

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Experimental Study on Mineral Processing of a Medium-GradePhosphate Rock in Yunnan Province LI Fenrui°. PENG Fenlan' Journal of Kunming Metallurgy College    2025, 41 (3): 23-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０３．００４ Abstract （14）      PDF（pc） （973KB）（1）       Knowledge map    Save  Yunnan is rich in phosphate resources, mainly dominated by medium-low grade carbonatephosphate rock , for which experiments have proved that flotation is the most suitable separation methodThis paper focuses on a medium-grade carbonate phosphate rock ore from a certain phosphate mine inYunnan, with a P,O, grade of 25.15% and a MgO grade of 6.10%. A single reverse flotation processconsisting of one roughing and one scavenging stage was adopted , using a full sulfate中oer and phosphate mineral inhibitor, with the optimal grinding fineness of -0.074 mu at o..v7, +wfatty acid soap as a collector, the carbonate ( Mg0) impurity is removed, and the useful phosphate min.erals are concentrated. The concentrate indexes of phosphorus concentrate P,0,>33. 0% , MgO<1. 2%and recovery rate greater than 90.0%6 can be obtained through single reverse flotation closed circuitprocess under normal temperature test conditions, which provides a strong basis for the comprehensive u-ilization of this mine. Related Articles | Metrics

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Effects of BDS-3 IGSO Satellites on Tropospheric Parameter Estimation LONG Fengjie Journal of Kunming Metallurgy College    2025, 41 (3): 35-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０３．００６ Abstract （17）      PDF（pc） （3425KB）（1）       Knowledge map    Save  Inclined geosynchronous orbit ( IGS0 ) satellite is one of the important components of BeiDou-3 Navigation Satellite System ( BDS-3 ), with strong signal resistance and occlusion ability, especially inlow latitudes , its performance advantages are obvious. To study the influence of IGS0 satellites on tropospheric parameter estimation, firstly, six MGEX (multi-GNSS experiment) tracking stations in the Asia-Pacific region were selected. Secondly, GAMIT10.71 was used to study the effects of different elevationmask angle ( EMA) at low levels of solar activity and the estimation of tropospheric parameters of IGSOsatellites at high levels of solar activity. Finally, it is divided based on different solar activity levels andEMAs, and its causes are discussed. The experimental results show that when the solar activity level islow and the EMA range is within 10°, the IGS0 satellite has the greatest influence of zenith wet delay(ZWD), precipitable water (PW), north-south gradient ( NS) and east-west gradient (Ew ), re-spectively 20. 70 mm, 3. 35 mm, 30. 12 mm and 31.89 mm; When EMAs range from 10 ~20°, the im-pact of lGS0 satellites on tropospheric estimation is positively correlated with EMA. At high levels of so-lar activity and an EMA of 10°, IGS0 satellites have a greater impact on the estimation of troposphericparameters, with the maximum influence of tropospheric ZWD, Pw, NS.. and EW reaching38.60 mm, 6. 23 mm, 53. 57 mm and 53. 20 mm, respectively. The experimental results further showthat the influence of the lGS0 satellite on the estimation of tropospheric parameters at night is much high-er than during the day, and the effect is higher at low latitudes than in high latitudes. Related Articles | Metrics

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Video Transmission Technology for Unmanned Scraper LoadersBased on RK3588S and AHD Cameras YlN Yehua, Ll Yuncai, Ll Ping, XlAO Yanlong Journal of Kunming Metallurgy College    2025, 41 (3): 78-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０３．０１２ Abstract （17）      PDF（pc） （1810KB）（1）       Knowledge map    Save  As China's mineral resouree extraction aetivities extend deeper underground, the complex geo.logical stresses and harsh working conditions in deep mines present significant risks to the safety of miners. ln this context, automating and unmanning mining equipment has become a critical approach to improving mine safety and operational efficieney. "he video transmission system for unmanned seraper load.ers typically requires high-elficiency, stable, and low-lateney data transmission solutions to ensure real.time control and monitoring. By integrating autonomous driving technology with remote control methods.a video transmission technology has been developed and applied to the unmanned operation system of un-derground loaders. This research leverages the RK3588S chip and AHD cameras. In mines located onethousand meters below the surface, effcient video transmission technology plays a crucial role in enablingunmanned loaders to automatically load and unload minerals. Related Articles | Metrics

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On the Upgrading and High-Quality Development of Tourism Industry Enabled by the Digital Economy: A Case Study of Lijiang City HE Yanjie, ZHENG Quandong, WU Zhiguo, ZHANG Yunxin Journal of Kunming Metallurgy College    2025, 41 (2): 83-.   DOI: 10. 3969/j. issn. 1009 - 0479. 2025. 02. 014 Abstract （27）      PDF（pc） （1091KB）（1）       Knowledge map    Save Digital economy empowers the tourism industry to upgrade and improve its quality through re- ducing transaction costs, improving production efficiency, optimizing industrial structure, and enhancing tourism satisfaction. By examining the cases of digital development in Lijiang Ancient City and Yulong Snow Mountain, the article finds that digital economy can provide data support and decision-making ba- sis, reduce the operating costs of tourist attractions, improve management efficiency, innovate the supply of tourism products, promote the integrated development of culture and tourism, and enhance tourists' sat- isfaction, thereby promoting the high-quality development of Lijiang's tourism industry. Therefore, Li- jiang should leverage digital technology, demand, innovation, and management as key drivers, accelerate the integration of the tourism industry with the Internet, digital technology, and data value, accelerate the development of digital infrastructure and platforms, narrow the digital divide between urban and rural are- as, promote the digital transformation of the tourism industry, and strengthen the supervision of data us- age security to achieve the quality improvement and upgrading of Lijiang's tourism industry. Related Articles | Metrics

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Application of Pulsed Eddy Current Electromagnetic Technology in a Carbonate Sedimentary Facies Oilfield in Saudi Arabia HOU Yunling', ZHANG Wenting Journal of Kunming Metallurgy College    2025, 41 (1): 10-.   DOI: 10. 3969/j. issn. 1009 - 0479. 2025. 01. 002 Abstract （33）      PDF（pc） （5388KB）（1）       Knowledge map    Save Electromagnetic flaw detection logging technology plays a critical role in the safe operation and extended service life of wells by detecting corrosion, wear, and defects in casing, enabling effective iden- tification and localization of issues, which allows for timely interventions. Currently, the majority of next- generation electromagnetic flaw detection logging instruments primarily utilize pulsed eddy current tech- nology. This technology not only allows for precise detection of wellbore structures and identification of defects but also provides insights into the variations in the thickness of multi-layered pipe strings, espe- cially in the corrosion and damage of third to fourth layers tubing and casing. Moreover, the practical ap- plication of full-resolution electromagnetic flaw detection instruments using this technology in Saudi oil fields has demonstrated significant advantages. It saves time and reduces costs related to tubing lifting, while also minimizing the impact on well production operations and output. The instruments excel in terms of positioning accuracy, sensitivity, and responsiveness to changes, providing oilfield engineers with accurate data to develop targeted maintenance strategies. This helps reduce wellbore safety risks and failure rates. The case studies presented in this paper highlight the practical value and potential of pulsed  Related Articles | Metrics

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Experimental Study on Tungsten Extraction from Tailings YANG Zhihong, LI Yongjia, LI Yingjuan Journal of Kunming Metallurgy College    2025, 41 (1): 16-.   DOI: 10. 3969/j. issn. 1009 - 0479. 2025. 01. 003 Abstract （29）      PDF（pc） （1443KB）（0）       Knowledge map    Save The WO3 grade in the tailings of a selected gold mine is 0. 34% , with the mineral primarily existing in the form of scheelite. The effectiveness of conventional beneficiation methods for this mineral was investigated. A tungsten concentrate with a WO3 grade of 1. 37% and a recovery rate of 51. 84% was obtained using the leaching method. Flotation resulted in a tungsten concentrate with a WO3 grade of 1. 75% and a recovery rate of 66. 26%. Gravity separation yielded a tungsten concentrate with a WO3 grade of 1. 33% and a recovery rate of 46. 07% . The results showed that leaching, flotation, and gravity separation methods had similar efficacy in separating the mineral components. Considering factors such as cost-effectiveness and environmental impact, gravity separation was ultimately selected for the preliminary enrichment of tungsten resources in the mineral. Through closed-circuit experiments encompassing the en- tire gravity separation process, a tungsten concentrate with a WO3 grade of 1. 36% and a recovery rate of 46. 40% was achieved, resulting in approximately four times the initial grade. This demonstrates a prom- ising approach for the effective utilization of similar resources. Related Articles | Metrics

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Multi-objective Optimization of Stope Structural Parameters Based on Combined Weighting and Membership Functions DENG Liang Journal of Kunming Metallurgy College    2025, 41 (1): 22-.   DOI: 10. 3969/j. issn. 1009 - 0479. 2025. 01. 004 Abstract （24）      PDF（pc） （994KB）（0）       Knowledge map    Save  In order to optimize the selection of mining stope structural parameters, indicators were select- ed from the perspectives of safety, technology, economy, and environmental protection to construct an optimization indicator system for mining stope structural parameters. The fuzzy membership approach was used to comprehensively optimize the structural parameters of mining stopes, considering multiple objec- tives such as safety, technology, economy, and environmental protection. To accurately calculate the weights of each indicator in the optimization process, the subjective weights of the selected indicators were calculated using the GI theory based on expert subjective experience. Additionally, the entropy weight method was employed to calculate the objective weights of the optimization indicators based on the infor- mation derived from the mining stope structural parameters. The combination of subjective and objective weights was then applied to assign comprehensive weights to the optimization indicators. The multiple at- tributes embedded in the indicator values were processed using membership functions. Ultimately, the optimal combination of mining stope structural parameters, taking into account safety, technology, and e- conomy, was selected. The results demonstrate that the combination weighting method, along with fuzzy optimization, can achieve a multi-objective scientific optimization of mining stope structural parameters, selecting the combination with the best comprehensive benefits for mining enterprises. Related Articles | Metrics

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Study on the Parameters of an Underground Lead-ZincMine Based on Blasting Funnel Test HE Lihua', SUN Jinhui? , CHENG Ming' , ZHAO Yanwei? Journal of Kunming Metallurgy College    2025, 41 (1): 30-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０１．００５ Abstract （15）      PDF（pc） （2678KB）（0）       Knowledge map    Save  Currently, an underground lead-zinc mine in Yunnan is facing issues such as poor blastingelfects and high block rates , which significantly inerease economic costs. As mining operations continue,the ore and rock characteristics in dilferent areas become increasingly complex and variable, making asingle set of blasting parameters unsuitable for the mining operations. To optimize the blasting parametersand improve the blasting efect in on-site production, a series of uncoupled charge crater tests were con-ducted on the side of the 402 mining area of the mine, based on the Livingston blasting crater theory. Theoptimal values for the crater's hole depth, radius, critical depth, volume, hole spacing, and resistanceline were found to be 0.55 m, 0. 5 m, 1. 1 m, 0. 129 m’, 1.1 m, and 0. 85 m, respectively. After blas-ting, the fragments were collected, sereened, and classified by particle size. The R-R function was usedto predict the distribution of different particle sizes, and it was found that the R-R function could effec.tively predict the blasting fragmentation distribution. "The obtained parameters can provide theoretical support for optimizing blasting parameters in future field operations. Related Articles | Metrics

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Spatial Distribution and Land Use Analysis of DebrisFlow Accumulation Fans in the Xiaojiang Basin ZHANG Xiaolun'. , TlAN Shujing’, Yl Junhua', WAN Baofeng'WEl Xiaochen', CHEN Hongwei' , ZHU Qicheng' Journal of Kunming Metallurgy College    2025, 41 (1): 39-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０１．００６ Abstract （9）      PDF（pc） （1985KB）（0）       Knowledge map    Save The human-environment confliet is prominent in the high mountain and valley areas of the central Yunnan Plateau, where debris flow accumulation fans serve as important sites for the production andlivelihoods of the local residents. Through the interpretation of Gaofen-2 remote sensing imagery and fieldinvestigations , this study identified the spatial distribution characteristies of debris flow accumulation fansin the Xiaojiang Basin , and analyzed the development scale of these fans as well as the status of land development and utilization. The results indicate that there are 245 debris flow accumulation fans in the Xi.aojiang Basin, covering a total area of 84. 6 km'. These fans are primarily distributed in the middle andlower reaches of the Xiaoiang Basin, at elevations between 500 and 2 000 meters, and along the gentlysloping river valleys with slopes of less than 10°. The average area of the debris flow accumulation fans is0. 35 km’ , with medium and large-sized fans being the most common. Among these fans, 176 have beenextensively developed and utilized for residential and agricultural purposes, covering an area of77. 89 km’, or 92. 196 of the total area. Approximately half of the debris flow accumulation fans host set-tements, and nearly half have roads or bridges passing through them. This study provides valuable guid-anee and reference for land development, remediation, and optimal utilization of debris flow accumulationfans in the Xiaojiang Basin. Related Articles | Metrics

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Study on 3D Model Reconstruction Methods Based on Historical Aerial Imager. CHEN Zhan', WEl Baofeng’, CHEN Guoping’ , ZHANG Xiaolun'CHENG Gong''.OUYANG Hui', Ll Jian' Journal of Kunming Metallurgy College    2025, 41 (1): 47-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０１．００７ Abstract （6）      PDF（pc） （2580KB）（0）       Knowledge map    Save  Historical aerial imagery can objectively and accurately record the evolution and changes ollandforms , topography, environmental conditions, natural landseapes, and cultural landseapes during dif.ferent historical periods. It plays a significant role in research and transformation related to urban resoureeand environmental issues , providing scientifie decision-making support for social progress and sustainabledevelopment. This paper focuses on 6 000 historical aerial images from Kunming City in 1989. Through aseries of steps, including, photographic digitization, batch cropping of images, three-dimensional modelconstruetion , automatic matching, and quality inspection , a comprehensive and seientific workflow for re-constructing digital three-dimensional models is explored. The resulting outputs are intuitive and measura-ble three-dimensional models. Experimental results demonstrate that the outcomes obtained using thismethod meet application requirements. This approach not only revives historical aerial images . extendingtheir lifespan, but also provides fundamental historical surveying and mapping data for research on urbanconstruetion changes, land use changes, and national situation monitoring. Related Articles | Metrics

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Research on Medical mage Fusion Based on mprovedPCNN and Nuclear Norm Energy YANG Qing Journal of Kunming Metallurgy College    2025, 41 (1): 53-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０１．００８ Abstract （7）      PDF（pc） （1276KB）（0）       Knowledge map    Save The existing medical image fusion methods suller from issues such as energy loss and unclealtextures. To address these problems , this paper proposes a method that separately fuses the high and low.frequeney coefficients in the NSS'T domain using an improved pulse coupled neural network ( PCNN) andnuclear energy. First, multimodal medical images undergo NSST decomposition to obtain the high andlow-frequeney coelficients of the source images. Then, the improved PCNN is employed to fuse the de-composed high-frequeney coelficients, while nuclear energy is used to fuse the low-frequeney coelficients.In the improved PCNN , a Gaussian filter is used to combine surrounding neurons, and the link strength isadaptively adjusted, greatly reducing the need for manually setting parameters. Finally , the fused imagesis obtained through NSST inverse transformation. Six sets of images are randomly selected for fusion andcomparative experiments. The results show that this method not only achieves superior visual performancebut also performs excellently across seven objective evaluation metrics. Related Articles | Metrics

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AI Drawing Helps the Development of 3D Design: TakingStable Diffusion as an Example LlU Songlin, YANG Leiying. Journal of Kunming Metallurgy College    2025, 41 (1): 61-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０１．００９ Abstract （8）      PDF（pc） （3130KB）（0）       Knowledge map    Save  Al drawing tools are soltware applications that leverage artificial intelligence technology to as-sist or fully automate the generation of artwork through local deployment of training. Commonly used Aldrawing tools inelude DALL-E 2, Midjourney, and Stable Diffusion, among which Stable Diffusion is themost widely adopted. By continuously updating the image's noise distribution, it generates high-qualityimages on local computers. Using actual design projects as examples , this article demonstrates how StableDillusion aids designers in rapidly generating sketches and renderings in 3D design, olfering a variety oldesign styles and creative approaches. This not only enhances design elficieney and creativity but alsohighlights the significant potential of Al drawing tools in fields such as environmental art design and archi.tecture. Related Articles | Metrics

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The Application of Association Rule Mining in PoliticalTheory Learning for Teachers and Students OUYANG Zhiping , RONG Hui', SONG Hao Journal of Kunming Metallurgy College    2025, 41 (1): 70-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０１．０１０ Abstract （6）      PDF（pc） （969KB）（0）       Knowledge map    Save  Currently, there are several issues in teacher and student political theory learning, such as in-sulficient relevance and lack of refined management. This paper explores the application of associationrule mining technology in teacher and student politieal theory learning. By analyzing and extracting thecharacteristies of teacher and student learning objects, the paper mines the relationships between thesefeatures using association rule algorihms. Based on the results , differentiated and targeted learning strat.egies are implemented. Firstly, a problem model is established. Secondly, the Apriori algorihm is applied to mine association rules from the dataset. Additionally, an optimization algorithm using pruningtechniques is proposed to accelerate rule generation and improve algorithm elficiency. Finally, extensiveexperiments are conducted to verily the effectiveness of the problem model, algorithms, and pruning tech-niques. Related Articles | Metrics

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Study on the Impact of Aggregate Gradation on thePerformance of Pervious Concrete HAN Changju Journal of Kunming Metallurgy College    2025, 41 (1): 76-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０１．０１１ Abstract （8）      PDF（pc） （1037KB）（0）       Knowledge map    Save In order to study the elleet of aggregate particle size on the performance of pervious conerete ,pervious concrete was prepared using three different aggregate sizes, both in single-sized and gradedforms. The compressive strength, porosity, and permeability of the conerete were tested. The resultsshow that for pervious conerete prepared with single-sized aggregates, the compressive strength is highestwhen the aggregate size is between 4. 75 and 9. 5 mm. When two sizes of aggregates are mixed, the com-pressive strength of the specimen inereases slowly with the proportion of small-sized aggregate added, andinereases first and then decreases with the proportion of larger-sized aggregates. The elfect of different aggregate gradations on the permeability of pervious conerete is opposite to its ellect on compressivestrength. For pervious concrete made with single-sized aggregates, permeability is best when the aggregate size is between 9. 5 and 16 mm. For pervious conerete made with two sizes of aggregates, permeabil.ity decreases as the proportion of small-sized aggregate increases , while it increases as the proportion ollarge-sized aggregate increases. The permeability of pervious conerete made with aggregates of three dif.ferent particle sizes is the worst. Related Articles | Metrics

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Study on Key Elements of Smart Construction Site SafetyManagement Based on DEMATEL ZHA Xia, WU Guangli, Guo Yufeng, LONG Mei Journal of Kunming Metallurgy College    2025, 41 (1): 82-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０１．０１２ Abstract （9）      PDF（pc） （1304KB）（0）       Knowledge map    Save  With the rapid advancement of technology in the construction industry , smart construetion siteshave become a key trend. This paper uses the Decision Making Trial and Evaluation Laboratory ( DEMA-TEL) method to analyze the eritical elements of safety management on smart construction sites, aiming toimprove the elliciency and elfectiveness of safety management. Through a combination of case studies.expert interviews, and literature review, this study develops a comprehensive system of factors covering e-quipment, process management, personnel, and the site environment. The DEMATEL. method is thenapplied to highlight the importanee and interrelationships of these elements. The findings indicate thattechnological innovation , personnel training, supervisory mechanisms, and environmental adaptability areessential strategies for improving the ellectiveness of salety management on smart consruction sites. Theimplementation of these strategies significantly enhanees the quality of technology application and person-nel training, optimizes supervisory mechanisms, and strengthens environmental adaptability. The resultsof this study provide valuable theoretical support and praetical guidance for the construction industry inimplementing safety management strategies for smart construction sites, helping to drive safety manage-ment toward greater effcieney and systematization. Related Articles | Metrics

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Research on the Digitization of Magnetic Rotor Flowmeter YANG Yiman, XU Lian’ge Journal of Kunming Metallurgy College    2025, 41 (1): 90-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０１．０１３ Abstract （9）      PDF（pc） （2938KB）（0）       Knowledge map    Save in order to improve the measurement accuracy, reduce costs , and achieve intelligent funetionality for the magnetic rotor flowmeter, a digitally intelligent upgraded magnetie rotor flowmeter is designedwith the STC8H as the control core for hardware and soltware design. The magnetie switch sensor detectsthe float height and converts it into an electrical signal. The relationship between the sensor output and thelow rate is determined using the piecewise linear correction method, enabling the calculalion of flow rateand cumulative flow. By implementing data acquisition , remote communication with the host computer, andcireuits for display and control, the intelligenee and digitalization of the magnetic rotor flowmeter are a-chieved. A prototype is developed, and a test platform is set up. Measurement results demonstrate that theaccuracy of the measurements can be improved Related Articles | Metrics

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Fault Diagnosis of Planetary Gearbox Based on CAGNet Network HAO Zhongbo', ZOU Mengting’, Ll Xiaonan' Journal of Kunming Metallurgy College    2025, 41 (1): 95-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０１．０１４ Abstract （6）      PDF（pc） （2253KB）（0）       Knowledge map    Save Aiming to address the challenge of insufficient fault data for planetary gearboxes in practicalengineering, which results in low diagnostic aeeuracy of traditional machine learning algorithms, a fauldiagnosis method based on the CAGNet (Conv Attention Gear Net) network is proposed. Firstly, vibration simulation signals under different fault conditions are generated using an established phenomenologieal model. By segmenting these simulation signals, a network training dataset is constructed to overcomethe issue of limited training samples for planetary gearboxes. Secondly, to enhance network training effi.cieney and convergence speed , two convolutional layers are utilized for elfective feature extraction and in.lormation transmission , aecelerating the training process. Additionally, the convolutional attention mech.anism is embedded in the Residual Network to capture deep features of the signal. By selecting these fea.tures, the CAGNet network model is developed, which improves the model's diagnostic accuracy. Final-ly, based on both simulation and experimental data, the proposed model is compared with the ResidualNetwork ( ResNet), Deep Residual Shrinkage Network ( DRSN), and MSACNN network. The diagnosticaccuracy of the proposed model is improved by 1.5% , 2.5% , and 4. 5%6 , respectively. Related Articles | Metrics

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Research Progress on Application and Blending Modification ofPolylactic Acid in Food Packaging Jl Haobo, HAO Yanhong" Journal of Kunming Metallurgy College    2025, 41 (1): 104-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０１．０１５ Abstract （6）      PDF（pc） （939KB）（0）       Knowledge map    Save  Polylaetic acid ( PLA) is a thermoplastie that can be fully degraded into carbon dioxide andwater. Industrially , it is polymerized from lactic acid through multiple reaction steps. PLA possesses bio-eompatibility and environmental friendliness and is employed in the biomedical and food packaging domains. Nevertheless, it has drawbacks such as inferior mechanical properties, poor thermal stability.slow crystallization rate, and high cost. Based on this, the modification studies aimed at amelioratingthese disadvantages are summarized. The modification approaches are mainly accomplished through phys.ical blending, one being blending in the molten state under heating, and the other being blending in solu-tion with the assistanee of mechanical stirring. Judging from the modifieation outcomes, most modifications can fulfill the objective of improving the performance disadvantages of PLA. However, for the solvents involved in solution blending, the majority are toxic solvents, which contradicts the non-toxic andbiocompatible characteristics of PLA and requires attention in praetical research. Related Articles | Metrics

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Comparative Evaluation and Analysis of Three Air QualityIndices: Taking Wenshan City as an Example QlU Cheng Journal of Kunming Metallurgy College    2025, 41 (1): 110-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０１．０１６ Abstract （3）      PDF（pc） （1182KB）（0）       Knowledge map    Save  The three environmental air quality index evaluation methods, namely the mean value index,weighted index, and N. L. Nemerow index, each have their own advantages and disadvantages. Conduc-ing a comparative evaluation of these three air quality indices can provide valuable insights for improvingenvironmental air quality assessments. By applying the mean value index, weighted index, and N. .Nemerow index to assess the urban air quality of Wenshan City, the results show that, whether comparingmean dilerences or conducting two independent sample tests, the evaluation results ( index values) of themean value index and weighted index are not significantly different. However, the evaluation results ( in-dex values) of the N. L.. Nemerow index differ significantly from both the mean value index and theweighted index (P <0. 05 ). From May to 0etober 2023, 0, was the primary pollutant of urban air pollu-lion in Wenshan City. In the remaining months of 2023, PM,s was the primary pollutant. Over thecourse of the entire year, PM,s emerged as the primary pollutant in Wenshan City's urban air, while 0and PM,, were also significant pollutants. In 2023 , the highest values of the urban air quality index inWenshan City were observed in April, while the lowest values were recorded in july. The urban air quality in Wenshan City worsened gradually from January to April, improved from April to July, and then de-teriorated again from July to December. Related Articles | Metrics

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Research on the Construction of Information Technology Textbooks forVocational Colleges Under the New Curriculum Standards Zl Yongsuo Journal of Kunming Metallurgy College    2025, 41 (1): 116-.   DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２５．０１．０１７ Abstract （5）      PDF（pc） （929KB）（0）       Knowledge map    Save The 2021 version of The Information Technology Curriculum Standards for Higher VocationalEducation ( Vocational Colleges ) issued by the Ministry of Education provides a detailed plan for the development of information technology courses in vocational colleges, addressing six key aspects : course na-ture and tasks, subject core competencies and objectives, course structure, course content, academicquality , and course implementation. The construction of information technology textbooks is a fundamen-tal guarantee for the elfective implementation of these standards. Based on the specific needs of vocationalcollege students and the requirements of the new curriculum standards. developing textbooks tailored tostudents’ learning needs is crucial to achieving teaching obiectives effectively. However, current issues inthe development of information technology textbooks include low entry barriers, strong utilitarian focusnarrow identity attributes, weak ideological and political guidance, insufficient career development con-tent, lack of emphasis on computational thinking, deviation from curriculum standards, misalignmentwith target audiences, and a rigid approach to practical teaching. Therefore, it is recommended to establish a clear entry mechanism for textbook development, create a diversified group of authors, and ensurethat the needs of vocational college students are at the center. Textbooks should be written in line withcurriculum standards, incorporating rich ideological and political guidance, broad computational think-ing, comprehensive career development content, and diverse practical teaching models. This approachwill promote the achievement of curriculum goals for vocational college students, improve their scientificand technological literacy and computational thinking abilities , foster professional thinking habits in information technology, and enhance their vocational skills and information literacy. Ultimately, this will helpstudents adapt to the changing industrial landscape and the increasing need for information technology inenterprises, thereby contributing to the development of a skilled, technology-driven society. Related Articles | Metrics

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A Comparative Study of AI Translation and Human Translation: A Case Study of the Translation of China's Twenty-Four Solar Terms into Vietnamese LI Jin Journal of Kunming Metallurgy College    2025, 41 (2): 93-.   DOI: 10. 3969/j. issn. 1009 - 0479. 2025. 02. 015 Abstract （29）      PDF（pc） （1721KB）（0）       Knowledge map    Save With the rapid development of artificial intelligence technology, AI translation has become in- creasingly important in the language service industry. The study aims to explore whether AI translation can effectively replace human translation. By comparing the case of translating China's 24 solar terms into Vietnamese, it analyzes the pros and cons, advantages, limitations, and future development trends of AI translation and human translation in practice. The results show that although AI translation shows great potential in professional translation practice, it still requires human assistance and supervision to achieve the optimal translation outcomes. Related Articles | Metrics

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From Exposure to Identification: The Expression and Shaping of the Chinese Nation Community Consciousness by Yunnan Beat and Jump Short Videos LIU Kaihuaª, DENG Shaoyia, LI Yang" Journal of Kunming Metallurgy College    2025, 41 (2): 100-.   DOI: 10. 3969/j. issn. 1009 - 0479. 2025. 02. 016 Abstract （29）      PDF（pc） （1035KB）（0）       Knowledge map    Save The "exit" of Yunnan's "beat and jump" short videos is the result of the joint effect of the age factors of the development of the Internet and the original ecological ethnic elements in the information so- ciety. The "beat and jump" short videos have created an ethnic cultural ecology of interconnection, inte- gration, seeking common ground while shelving differences, and harmony without uniformity in the net- work transmission, which has played an important role in building the consciousness of the Chinese nation community. The "beat and jump" short videos in the cyberspace not only show the integration of tradition and modernity, but also show emotional resonance, a high sense of participation, cultural identity and a strong sense of belonging. By integrating the "beat and jump" culture into education and publicity, media interaction, tourism development and government decision-making, the "beat and jump" short vid- eos will become an important carrier to attract tourists and inherit culture in Yunnan, so as to promote the integration of ethnic cultures and ethnic unity. Related Articles | Metrics