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Essential Norms of Composition Operators Between Hardy Spaces of the Unit Disc

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Chinese Annals of Mathematics,Series B 2011年第2期32卷 209-214页

作者： luo luo Kai li Department of Mathematics University of Science and Technology of China Hefei 230026 China

The authors express the essential norms of composition operators between Hardy spaces of the unit disc in terms of the natural Nevanlinna counting function.

关键词： Essential norm Composition operators Hardy spaces

VARIABLE SELECTION FOR RECURRENT EVENT DATA WITH INFORMATIVE CENSORING

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Journal of Systems Science & Complexity 2012年第5期25卷 987-997页

作者： Ximing CHENG li luo School of Applied Science Beijing Information Science and Technology University Academy of Mathematics and Systems Science Chinese Academy of Sciences Information System Management Dept.SINOPEC

Recurrent events data with a terminal event （e.g., death） often arise in clinical and ob- servational studies. Variable selection is an important issue in all regression analysis. In this paper, the authors first propose the estimation methods to select the significant variables, and then prove the asymptotic behavior of the proposed estimator. Furthermore, the authors discuss the computing algorithm to assess the proposed estimator via the linear function approximation and generalized cross validation method for determination of the tuning parameters. Finally, the finite sample estimation for the asymptotical covariance matrix is also proposed.

关键词： Backward exclusion estimating equation forward inclusion informative censoring oracleproperties recurrent event data sparsity.

Oriented Tree Diagram lie Algebras and Their Abelian Ideals

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Acta Mathematica Sinica,English Series 2010年第11期26卷 2041-2058页

作者： li luo Department of Mathematics East China Normal University Shanghai 200241 P. R. China

We introduce oriented tree diagram lie algebras which are generalized from Xu＇s both upward and downward tree diagram lie algebras, and study certain numerical invariants of these algebras related to abelian ideals.

关键词： Abelian ideal tree diagram solvable lie algebra

Target-tracked prioritization to surveille ballistic missiles

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Journal of Systems Engineering and Electronics 2009年第6期20卷 1198-1206页

作者： luo Kaiping li Yijun School of Management Harbin Inst. of Technology Harbin 150001 P. R. China

The missile-tracked priority assessment for the early warning system monitoring multi-missile very well, is the first task to defend them and useful to perform optimally the sensor-to-missile assignment. The problem of the missile-tracked priority assessment is of incomplete information, of multi-attribute and dynamic. To solve the dificult problem, the index system, which includes six classification indices, is established by means of reducing the target＇s primary information which the early warning system focuses on. The lack of some attributes values, which is caused by the incomplete information, is handled by the approach： first classifying each attribute as unknown one or known one, and then subdividing the latter, last using the expectation and the information entropy if the attribute is known but uncertain. With a view of reality, nine qualitative evaluation criteria are given. Based on them each index is quantified by the eigenvector method. And then based on the improved technique for order preference by similarity to ideal solution （TOPSIS）, the targets-tracked priorities are assessed and sorted by an evaluation function from three aspects： 1） the quantity of the available information, 2） the affirmative or accurate degree of the available information, 3） the classification or trait of the available information.

关键词： priority assessment missile warning incomplete information multi-attribute decision technique for order preference by similarity to ideal solution.

On Ad-Nilpotent b-Ideals for Orthogonal lie Algebras

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Acta Mathematica Sinica,English Series 2013年第2期29卷 241-262页

作者： li li liU li luo Department of Mathematics East China Normal University

Krattenthaler, Orsina and Papi provided explicit formulas for the number of ad-nilpotent ideals with fixed class of nilpotence of a Borel subalgebra of a classical lie algebra. Especially for types A and C they obtained refined results about these ideals with not only fixed class of nilpotence hut also fixed dimension. In this paper, we shall follow their algorithm to determine the enumeration of ad-nilpotent b-ideals with fixed class of nilpotence and dimension for orthogonal lie algebras, i.e., types B and D.

关键词： Orthogonal lie algebra Borel subalgebra ad-nilpotent ideal

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职业教育数字技术伦理困境与突围路径

宁波职业技术学院学报 2025年第1期29卷 64-68页

作者：罗丽田桂明贵州师范大学经济与管理学院贵州贵阳550025

伴随着数字技术的飞速进步,人工智能、区块链等创新技术在教育领域的应用日益广泛。数字技术为职业教育提供了更为丰富的教学资源和创新的教学方式,然而,在此过程中,职业教育领域正面临着数字技术伦理问题所带来的前所未有的机遇与挑战... 详细信息

伴随着数字技术的飞速进步,人工智能、区块链等创新技术在教育领域的应用日益广泛。数字技术为职业教育提供了更为丰富的教学资源和创新的教学方式,然而,在此过程中,职业教育领域正面临着数字技术伦理问题所带来的前所未有的机遇与挑战。隐私保护与数据安全、教育资源分配、教师角色与职责转变、技术与人文关怀分离等问题在数字技术应用过程中日益突出。通过研究职业教育在数字技术应用中所面临的伦理挑战,以下措施亟待重视:加强隐私与数据安全保障、推动教育资源合理分配、重塑教师角色与提升专业素质、实现技术与人文关怀的有机结合。

关键词：职业教育数字技术伦理困境路径

Optimal and suboptimal structured algorithms of binary linear block codes

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Journal of Systems Engineering and Electronics 2011年第6期22卷 1010-1014页

作者： Yijun luo Jin li School of Electronic Information Wuhan University Wuhan 430079 R R. China

The optimal and suboptimal structured algorithms of linear block codes from the geometrical perspective are *** minimum distance and weight property lemmas and the theorem are proved for the generator *** upon the property of generator matrix,the structured algorithms of linear block codes are *** the complexity of optimal structured algorithm is very high,the binary linear block codes is searched by using the suboptimal structured *** comparison with Bose-Chaudhuri-Hocquenqhem（BCH） codes shows that the searched linear block codes are equivalent on minimum distance and can be designed for more block *** the linear block codes are used widely in communication systems and digital applications,the optimal and suboptimal structured algorithms must have great future being widely used in many applications and perspectives.

关键词： channel coding linear block codes generator matrix minimum distance.

The Significance of Thermally Pulsing Asymptotic Giant Branch Stars in Post-starburst Galaxies

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Research in Astronomy and Astrophysics 2023年第1期23卷 184-201页

作者： Siqi liu A-li luo CAS Key Laboratory of Optical Astronomy National Astronomical ObservatoriesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China College of Computer and Information Management&Institute for Astronomical Science Dezhou UniversityDezhou 253023China

We measure the significance of thermally pulsing asymptotic giant branch(TP-AGB)stars via the spectral energy distributions(SEDs)of a sample of post-starburst(PSB)galaxies at z=*** ground-and space-based photometry from the 3D-HST catalog,as well as associated near-infrared(NIR)Hubble Space Telescope(HST)slitless grism spectroscopy,we evaluate the importance of TP-AGB stars in the SEDs of 177 PSB galaxies by fitting simple stellar populations with different levels of TP-AGB *** grism spectra,despite their low resolution of R~100,enable the detection of molecular features specific to TP-AGB stars and thus improve constraints on their contribution.A majority(~70%)of galaxies in the PSB sample show features indicative of TPAGB stars,while the remainder does not and they are well fit by Bruzual&Charlot TP-AGB light *** spectra of sources classified to be the best fit by TP-AGB heavy/mild models reveal strong detections of NIR molecular features associated with TP-AGB ***,we observe a tentative trend with redshift where more TP-AGB heavy galaxies are observed in the higher redshift PSB galaxy ***,neglecting the contribution of TP-AGB stars can yield an over-prediction of stellar masses measured in the K-band ranging from 0.13-0.23 dex.

关键词： stars AGB and post-AGB-galaxies stellar content-galaxies peculiar

High‑Temperature Electrochemical Devices Based on Dense Ceramic Membranes for CO_(2) Conversion and Utilization

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Electrochemical Energy Reviews 2021年第3期4卷 518-544页

作者： Wenping li Jing‑li luo Department of Chemical and Materials Engineering University of AlbertaEdmontonAB T6G 1H9Canada

The adverse effects of global warming and climate change have driven the exploration of feasible routes for CO_(2) capture,storage,conversion and *** processes related to CO_(2) conversion in high-temperature electrochemical devices(HTEDs)using dense ceramic membranes are particularly appealing due to the simultaneous realization of highly efficient CO_(2) conversion and value-added chemical production as well as the generation of electricity and storage of renewable energy in some ***,most studies are focused on the two processes,CO_(2) electrolysis and H2O/CO_(2) co-electrolysis in oxygen-conducting solid oxide electrolysis cell(O-SOEC)*** attention has been paid to other meaningful CO_(2)-conversion-related processes in HTEDs and systematic summary and analysis are currently not *** review will fill the gap and classify the CO_(2)-conversion-related processes in HTEDs reported in recent years into four types accord-ing to the related reactions,including assisted CO_(2) reduction to CO,H2O and CO_(2) co-conversion,dry reforming of methane and CO_(2) ***,an overview of the fundamentals of HTED processes is presented,and then the related mechanism and research progress of each type of reactions in different HTEDs are elucidated and concluded *** remaining major technical issues are also briefly ***,the main challenges and feasible solutions as well as the future prospects of HTEDs for CO_(2)-conversion-related processes are also discussed in this review.

关键词： Electrochemical devices High temperature CO_(2)reduction Co-conversion Dry reforming of methane CO_(2)hydrogenation