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Distribution of apparent magnetization for Asia

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Science China Earth Sciences 2000年第6期43卷 654-660页

作者：徐元芳安振昌黄宝春 V.P.Golovkov n.m.rotanova A.L.Kharitonov Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100101China IZmIRAn 142092 Troitsk MoscowRussia

magsat total field anomalies over Asia were used to construct an equivalent magnetization model, which represents the apparent magnetization distribution within an equivalent layer 40 km thick and correlates well with large-scale tectonics, for example, the Kazakhstan, Tarim, Yangtze, India, Sino-Korea and Indochina blocks. The basin, plain, sea basin, and islands are delineated by magnetization lows whereas the plateau and marine ridge correspond to magnetization highs. The boundary between Tibetan Plateau and India marked by a strong gradient along its length coincides with the Yarlung Zangbo River fault roughly. The Tanlu fault belt is the boundary between positive and negative anomalies. This boundary stretches in southwest direction and joins Sanjiang fault belt. The boundary between the Southeast China block and the Yangtze block is also clearly delineated by the magnetization anomalies. Generally, the magnetization boundaries are consistent with the collisional suture of blocks.

关键词： apparent magnetization equivalent layer magnetization tectonics.

欧洲及其邻区mAGSAT卫星磁异常冠谐模型

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地球物理学报 1998年第4期41卷 468-474页

作者：安振昌 n.m.rotanova S.D.Odintsov 汪鹏程中国科学院地球物理研究所北京100101 俄罗斯科学院

通过对欧洲及其邻近地区 mAGSAT 卫星黎明资料进行了处理,得到1°×1°卫星磁异常网格值。本文使用冠谐分析方法,计算该地区卫星矢量磁异常(ΔX,ΔY,ΔZ)冠谐模型。球冠极点位于33°n和26°E,球冠半角为40°.冠谐模型的截断指数为18。... 详细信息

通过对欧洲及其邻近地区 mAGSAT 卫星黎明资料进行了处理,得到1°×1°卫星磁异常网格值。本文使用冠谐分析方法,计算该地区卫星矢量磁异常(ΔX,ΔY,ΔZ)冠谐模型。球冠极点位于33°n和26°E,球冠半角为40°.冠谐模型的截断指数为18。根据卫星磁异常冠谐模型和地磁场球谐模型 DGRF1980,计算卫星总强度磁异常(ΔF)的冠谐一球谐模型。根据卫星磁异常的理论模型,计算并绘制不同高度(300,400,500km)的理论卫星磁异常图。对冠谐模型和大磁异常进行了分析和讨论。

关键词： mAGSAT卫星磁异常欧洲地磁场冠谐模型

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东亚地磁场的Taylor多项式模型

东亚地磁场的Taylor多项式模型

1993年中国地球物理学会第九届学术年会

作者：安振昌谭东海 V．P．Golovkov n.m.rotanova T．n．Bonder 中国科学院地球物理研究所中国科学院地球物理研究所 IZmIRAn Russian Academy of Sciences142092TroitskMoscow RegionRussia. IZmIRAn Russian Academy of Sciences142092TroitskMoscow RegionRussia. IZmIRAn Russian Academy of Sciences142092TroitskMoscow RegionRussia.

＜正＞根据我国国家自然科学基金委员会和俄罗斯科学院的国际合作研究计划,在国际上首次同时使用中国、苏联和蒙古的地磁复测点资料,以及东亚地区的地磁台站资料,计算出1980年东亚地磁场的Taylor 多项式模型,并绘制出相应的东亚地磁图...

＜正＞根据我国国家自然科学基金委员会和俄罗斯科学院的国际合作研究计划,在国际上首次同时使用中国、苏联和蒙古的地磁复测点资料,以及东亚地区的地磁台站资料,计算出1980年东亚地磁场的Taylor 多项式模型,并绘制出相应的东亚地磁图。提出了确定地磁场区域模型最大阶数的新判据。

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东亚地磁场的冠谐分析

东亚地磁场的冠谐分析

Langmuir-Schaefer Film Investigation and Density Functional Theory Band Gap Calculations of Calix[n]arene-Para-Aminobenzoic Acid for Drug nanosensor Application

1994年中国地球物理学会第十届学术年会

作者：安振昌谭东海徐元芳 V．P．Golovkov n.m.rotanova T．n．Bonder 中国科学院地球物理研究所中国科学院地球物理研究所 IZmIRAn Russian Academy of SciencesTroitskMoscow RegionRussia142092 IZmIRAn Russian Academy of SciencesTroitskMoscow RegionRussia142092 IZmIRAn Russian Academy of SciencesTroitskMoscow RegionRussia142092 IZmIRAn Russian Academy of SciencesTroitskMoscow RegionRussia142092

＜正＞1．资料使用东亚地区1980．0年的地磁复测点资料和地磁台站资料,包括237个点的三分量绝对观测值。为了计算东亚地磁场的冠谐模型,要把明显的磁异常点剔除。我们选取的标准是:如果某点（复测点或地磁台）的观测值与根据国际地磁参...

＜正＞1．资料使用东亚地区1980．0年的地磁复测点资料和地磁台站资料,包括237个点的三分量绝对观测值。为了计算东亚地磁场的冠谐模型,要把明显的磁异常点剔除。我们选取的标准是:如果某点（复测点或地磁台）的观测值与根据国际地磁参考场DGRF1980计算的理论值之间的差值大于500nT,则将该点剔除。经过这种筛选,我们使用220个测点的观测值,进行球冠谐和分析。

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Journal of Wuhan University of Technology(materials Science) 2024年第5期39卷 1311-1318页

作者： WOnG Yeong Yi F L Supian A Radzwan m musa n F n Abd Karim Department of Physics Sultan Idris Education UniversityTanjong Malim 35900Malaysia Department of Chemistry Sultan Idris Education UniversityTanjong Malim 35900Malaysia

Calix[n]arenes was utilized to detect PABA,the primary sunscreen *** study investigates the interaction of calix[4]arene(C4),calix[6]arene(C6),and PABA using the Langmuir method and first-principle density functional theory(DFT).Using the Langmuir-Schaefer(LS)technique,an ultrathin film composed of calix[n]arenes and their complexes with PABA was deposited on various *** on the Langmuir study,the PABA molecule was bonded to the lower rims of both C4 and C6 with the host-guest ratio of 1:*** of the LS films formed were then characterized by ultravioletvisible spectroscopy(UV-Vis),Fourier-transform infrared spectroscopy(FTIR)and carbon,hydrogen,nitrogen,sulfur elemental analyzer(CHnS).The band gap reduction obtained in the DFT study denotes the charge transfer interaction with promising reactivity between the calix[n]arenes and *** sensing of PABA by C4 and C6 is successful based on the formation of bonding between them due to the hosts’effective trapping *** outcomes of this study could be applied to drug delivery systems for future pharmaceutical and medical applications.

关键词： calix[n]arenes band gap density functional theory Langmuir-Schaefer PABA sensor

magnetic,dielectric and electrical modulus of Ce^(3+) doped cobalt-magnesium ferrite nanoparticles

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Journal of Rare Earths 2024年第2期42卷 373-382,I0005页

作者： n.m.Basfer Hanaa Almaghamsi Department of Physics Umm AL-Qura UniversityMakkahSaudi Arabia Physics Department College of Science and ArtKing Abdulaziz UniversityPOB344Rabigh291Saudi Arabi

In this work,the magnetic,dielectric properties and electric modulus of Ce^(3+) substituted cobaltmagnesium(Co_(0.7)mg_(0.3)Ce_(x)Fe_(2-x)O_4)(labeled as CmCF) ferrite nanoparticles were investigated in *** magnetization decreases from 50.05 to 34.87 emu/g for further substituting Ce^(3+) ***,coercivity increases from 738.22 Gs for the CmCFO sample to 912.10 Gs for the CmCF2 sample,then decreases monotonically to 762.1 Gs for the CmCF5 *** cerium content and particle size play important roles in controlling the magnetization and coercivity of the CmCF *** CmCF nanoferrites are suitable for microwave applications since their high-frequency response ranges from 7.72 to 11.07 *** CmCF nanoferrites' dielectric parameter dispersion exhibits normal *** pristine Co-mg nanoferrite only has ε' value of 28.25,but the nanoferrite mCmF2 has ε' value of365.03,with an enhancing ratio of 1192%.The conduction mechanism of the mCmF nanoferrites was determined by fitting the σ_(ac) results via the Jonscher power *** 653 K,large polaron tunnelling is thought to be responsible for this conduction process,which is followed by electron barrier hopping at higher ***-Cole diagrams at different temperatures,assuring the contributions of the grains and their boundaries at lower temperatures(653 K) and only the grains at higher *** on our results,the CmCF nanoferrites hold magnetic and semiconducting nature,which can be used in magnetic devices and dielectrics in lower-frequencies or conductors in higher-frequencies.

关键词： nanoferrites Rare earth ions magnetic properties Dielectric parameters Impedance spectroscopy

EDSUCh:A robust ensemble data summarization method for effective medical diagnosis

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Digital Communications and networks 2024年第1期10卷 182-189页

作者： mohiuddin Ahmed A.n.m.Bazlur Rashid School of Science Edith Cowan UniversityPerthAustralia

Identifying rare patterns for medical diagnosis is a challenging task due to heterogeneity and the volume of *** summarization can create a concise version of the original data that can be used for effective *** this paper,we propose an ensemble summarization method that combines clustering and sampling to create a summary of the original data to ensure the inclusion of rare *** the best of our knowledge,there has been no such technique available to augment the performance of anomaly detection techniques and simultaneously increase the efficiency of medical *** performance of popular anomaly detection algorithms increases significantly in terms of accuracy and computational complexity when the summaries are ***,the medical diagnosis becomes more effective,and our experimental results reflect that the combination of the proposed summarization scheme and all underlying algorithms used in this paper outperforms the most popular anomaly detection techniques.

关键词： Data summarization Ensemble medical diagnosis Sampling

A FLEXIBLE OBJECTIVE-COnSTRAInT APPROACH AnD A nEW ALGORITHm FOR COnSTRUCTInG THE PARETO FROnT OF mULTIOBJECTIVE OPTImIZATIOn PROBLEmS

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Acta mathematica Scientia 2024年第2期44卷 702-720页

作者： n.HOSEInPOOR m.GHAZnAVI Faculty of mathematical Sciences Shahrood University of TechnologyShahroodIran

In this article, a novel scalarization technique, called the improved objective-constraint approach, is introduced to find efficient solutions of a given multiobjective programming problem. The presented scalarized problem extends the objective-constraint problem. It is demonstrated that how adding variables to the scalarized problem, can lead to find conditions for (weakly, properly) Pareto optimal solutions. Applying the obtained necessary and sufficient conditions, two algorithms for generating the Pareto front approximation of bi-objective and three-objective programming problems are designed. These algorithms are easy to implement and can achieve an even approximation of (weakly, properly) Pareto optimal solutions. These algorithms can be generalized for optimization problems with more than three criterion functions, too. The effectiveness and capability of the algorithms are demonstrated in test problems.

关键词： multiobjective optimization Pareto front scalarization objective-constraint approach proper efficient solution

Predicting effects of tunnel throttling of annular freeway vehicular flow by a continuum model

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第4期11卷 733-746页

作者： Zhongmin Huang m.n.Smirnova n.n.Smirnov Zuojin Zhu Faculty of Engineering Science University of Science and Technology of ChinaHefei 230026China Institute of Plasma Physics Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Faculty of mechanics and mathematics Lomonosov Moscow State UniversityMoscow 119992Russia

Fluid flow throttling is common in industrial and building services *** tunnel throttling of vehicular flow is caused by the abrupt number reduction of roadway lane,as the tunnel has a lower lane number than in the roadway normal *** predict the effects of tunnel throttling of annular freeway vehicular flow,a three-lane continuum model is ***Ⅲof the tunnel is completely blocked due to the need of tunnel rehabilitation,*** exists mandatory net lane-changing rate from laneⅢto laneⅡjust upstream of the tunnel entrance,which is described by a model of random number generated through a golden section *** net-changing rate between adjacent lanes is modeled using a lane-changing time expressed explicitly in algebraic *** paper assumes that the annular freeway has a total length of 100 km,a two-lane tunnel of length 2 km with a speed limit of 80 km/*** free flow speeds on lanesⅠ,ⅡandⅢare assumed to be 110,100 and 90 km/h *** on the three-lane continuum model,numerical simulations of vehicular flows on the annular freeway with such a tunnel are conducted with a reliable numerical method of 3rd-order *** results reveal that the vehicular flow has a smaller threshold of traffic jam formation in comparison with the case without tunnel *** fuel consumption can be estimated by interpolation with time averaged grid traffic speed and an assumed curve of vehicle *** vehicle fuel consumption is lane number dependent,distributes with initial density concavely,ranging from 5.56 to 8.00 *** throttling leads to an earlier traffic jam formation in comparison with the case without tunnel throttling.

关键词： Effects of tunnel throttling Vehicle fuel consumption Travel time Threshold of traffic jam formation Continuum model