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Photogrammetry Education for Multidisciplinary Geomatics in China

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Geo-Spatial Information Science 2006年第4期9卷 273-280,305页

作者： zhu qing State Key Laboratory for Information Engineering in Surveying Mapping and Remote Sensing Wuhan University 129 Luoyu Road Wuhan 430079 China

After briefly reviews the history of photogrammetry education in China, the development of undergraduate and graduate program, and the corresponding curricula design are analyzed by use of the data from Wuhan University in which the photogrammetry is awarded as the state-level key discipline. The academic educational program of photogrammetry in universities has trained students to perform tasks in all fields of the photogrammetric profession. In recent years, the nature of photogrammetry is changing and multidisciplinary geomatics are developing very rapidly, the educational program of photogrammetry has also changed in new concepts and structures to adapt very new technologies and the extension of the field. Finally, the prospect of photogrammetry education for the requirements of multidiseiplinary geomatics is proposed. The growing interest in fast and accurate 3D spatial data collection （such as city modeling and digital earth） results in the increasing need of photogrammetry as principal tool, photogrammetric courses are therefore requested to be upto date and to become one kind of the fundamental professional courses for university geomatics and remote sensing degree programs.

关键词： photogrammetry education remote sensing geomatics China

Line profile studies of hydrodynamical models of cometary compact H II regions

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Research in Astronomy and Astrophysics 2015年第6期15卷 828-848页

作者： Feng-Yao zhu qing-Feng zhu Department of Astronomy University of Science and Technology of China Key Laboratory for Research in Galaxies and Cosmology University of Science and Technology of China Chinese Academy of Sciences

We simulate the evolution of cometary H II regions based on several champagne flow models and bow shock models, and calculate the profiles of the [Ne II] fine-structure line at 12.81 μm, the H30α recombination line and the [Ne III] finestructure line at 15.55 μm for these models at different inclinations of 0°, 30° and 60°. We find that the profiles in the bow shock models are generally different from those in the champagne flow models, but the profiles in the bow shock models with lower stellar velocity （≤ 5 km s^-1） are similar to those in the champagne flow models. In champagne flow models, both the velocity of peak flux and the flux weighted central velocities of all three lines point outward from molecular clouds. In bow shock models, the directions of these velocities depend on the speed of stars. The central velocities of these lines are consistent with the stellar motion in the high stellar speed cases, but they are opposite directions from the stellar motion in the low speed cases. We notice that the line profiles from the slit along the symmetrical axis of the projected 2D image of these models are useful for distinguishing bow shock models from champagne flow models. It is also confirmed by the calculation that the flux weighted central velocity and the line luminosity of the [Ne III] line can be estimated from the [Ne II] line and the H30α line.

关键词： H II regions -- ISM kinematics and dynamics clusters -- line profiles

Pyrolysis of rice husk and sawdust for liquid fuel

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Journal of Environmental Sciences 2006年第2期18卷 392-396页

作者： zhu Xi-feng ZHENG Ji-lu GUO qing-xiang zhu qing-shi Biomass Clean Energy Laboratory University of Science and Technology of China Hefei-230026 China

The paper is focused on studying how to convert rice husk and sawdust into liquid fuel. Rice husk, sawdust and their mixture were pyrolyzed at the temperature between 420℃ and 540℃, and the main product of liquid fuel was obtained. The experimental result showed that the yield of liquid fuel heavily depended on the kind of feedstock and pyrolysis temperature. In the experiments, the maximum liquid yields for rice husk, sawdust and their mixture were 56% at 465 ℃, 61% at 490℃ and 60% at 475℃ respectively. Analysis with GC-MS and other apparatus indicated that the liquid fuel is a complicated organic compound with low caloric value and can be directly used as fuel oil without any up-grading. As a crude oil, the liquid fuel can be refined to be vehicle oil.

关键词： solid organic waste rice husk sawdust pyrolysis liquid fuel

Insect recognition based on integrated region matching and dual tree complex wavelet transform

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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第1期12卷 44-53页

作者： Le-qing zhu Zhen ZHANG College of Computer Science and Information Engineering Zhejiang Gongshang University Hangzhou 310018 China Key Lab of Forest Protection of State Forestry Administration Research Institute of Forest Ecology Environment and Protection Chinese Academy of Forestry Beijing 100091 China

To provide pest technicians with a convenient way to recognize insects,a novel method is proposed to classify insect images by integrated region matching (IRM) and dual tree complex wavelet transform (DTCWT).The wing image of the lepidopteran insect is preprocessed to obtain the region of interest (ROI) whose position is then *** ROI is first segmented with the k-means algorithm into regions according to the color features,properties of all the segmented regions being used as a coarse level *** color image is then converted to a grayscale image,where DTCWT features are extracted as a fine level *** IRM scheme is undertaken to find K nearest neighbors (KNNs),out of which the nearest neighbor is searched by computing the Canberra distance of DTCWT *** method was tested with a database including 100 lepidopteran insect species from 18 families and the recognition accuracy was 84.47%.For the forewing subset,a recognition accuracy of 92.38% was *** results showed that the proposed method can effectively solve the problem of automatic species identification of lepidopteran specimens.

关键词： Lepidopteran insects Auto-classification k-means algorithm Integrated region matching (IRM) Dual tree complex wavelet transform (DTCWT)

Escape probability for isotropic emitters near Kerr black hole with astrometric

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Communications in Theoretical Physics 2024年第5期76卷 128-133页

作者： Yu-Xuan Han qing-Hua zhu qing-Guo Huang CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesNo.19A Yuquan RoadBeijing 100049China Department of Physics Chongqing UniversityChongqing 401331China School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced Study UCASHangzhou 310024China

The paper investigates the escape probability for isotropic emitters near a Kerr black *** propose a new approach to obtain the escape probability in a general manner,going beyond previous case-by-case *** approach is based on studies of the black hole shadow with astrometric observable and can be applied to emitters with an arbitrary 4-velocities and locations,even to the emitters outside of the equatorial *** also consider representative examples illustrating how escape probabilities vary with distance,velocity,and inclination ***,this new approach provides an effective method for studying escape probabilities near Kerr black holes.

关键词： Kerr black hole photon escape probability isotropic emitters

Real-time control of human actions using inertial sensors

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Science China(Information Sciences) 2014年第7期57卷 162-172页

作者： LIU HuaJun HE FaZhi zhu FuXi zhu qing School of Computer Wuhan University School of Geosciences and Environmental Engineering Southwest Jiaotong University

Our study proposes a new local model to accurately control an avatar using six inertial sensors in *** such a system to assist interactive control of a full-body avatar is challenging because control signals from our performance interfaces are usually inadequate to completely determine the whole body movement of human *** use a pre-captured motion database to construct a group of local regression models,which are used along with the control signals to synthesize whole body human *** synthesizing a variety of human movements based on actors’control in real-time,this study verifies the effectiveness of the proposed *** with the previous models,our proposed model can synthesize more accurate *** system is suitable for common use because it is much cheaper than commercial motion capture systems.

关键词： avatars motion capture/editing/synthesis interaction techniques game interaction animation simulation

“Redistribution” Effect of Lumpy Zone for Gas Flow in BF

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Journal of Iron and Steel Research International 2007年第6期14卷 1-7页

作者： zhu qing-tian CHENG Shu-sen School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 China

The gas flow from tuyere to raceway zone by blasting involves three distributional zones, such as dripping, cohesive, and lumpy zone. The gas flow distribution in lumpy zone directly affects the gas utilization ration and smooth operation in the blast furnace. However, the furnace closeness brings about great difficulty in the study of high-temperature gas flow. The charging and blasting system affecting the gas flow and whether the top gas flow distribution could reflect its inner condition as well as the furnace state, such as hanging or scaffolding, which have become the main problems for the research on gas flow. Recently, several researches overseas studied gas flow distribution using the numerical simulation method; however, such a research was rare amongst the natives. In this study, the flow model of gas in cohesive and lumpy zone was established using the numerical simulation software and the gas flow distributions with uniform distribution of burden permeability, scaffolding of wall, and nonuniform charge level were analyzed. As a result, the effects of cohesive zone and lower parts on the gas flow are very limited and the charge level largely affects the distribution of top gas flow. Therefore, it was found that the distribution of top gas flow could hardly reflect the inner gas flow. The process is called ＂redistribution＂ effect, which means that the gas flow after passing through the raceway, dripping, and cohesive zone is distributed when it flows into the lumpy zone.

关键词： blast furnace gas flow lumpy zone numerical simulation

A Class of Backward Doubly Stochastic Differential Equations with Discontinuous Coefficients

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Acta Mathematicae Applicatae Sinica 2014年第4期30卷 965-976页

作者： qing-feng zhu Yu-feng SHI School of Mathematic and Quantitative Economics Shandong University of Finance and Economics Institute for Financial Studies and School of Mathematics Shandong University School of Statistics Shandong University of Finance and Economics

In this work the existence of solutions of one-dimensional backward doubly stochastic differential equations （BDSDEs） with coefficients left-Lipschitz in y （may be discontinuous） and Lipschitz in z is studied. Als... 详细信息

关键词： backward doubly stochastic differential equations backward stochastic integral comparisontheorem

Modified likelihood ratio test for homogeneity in normal mixtures with two samples

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Applied Mathematics(A Journal of Chinese Universities) 2008年第1期23卷 113-119页

作者： QIN Yong-song LEI qing-zhu School of Math. Sci. Guangxi Normal Univ. Guilin 541004 China.

This paper investigates the modified likelihood ratio test（LRT） for homogeneity in normal mixtures of two samples with mixing proportions unknown. It is proved that the limit distribution of the modified likelihood ... 详细信息

关键词： mixture model likelihood ratio test asymptotic distribution.