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	Decisions of OFDI Engagement and Location for Heterogeneous Multinational firms: Evidence from Chinese firms 期刊论文 OAI收割 TECHNOLOGICAL FORECASTING AND SOCIAL CHANGE, 2016, 卷号: 112, 页码: 178-187 作者: Shao, Yanmin; Shang, Yan \| 收藏 \| 浏览/下载：20/0 \| 提交时间：2018/07/30 Total factor productivity Outward foreign direct investment Heterogeneous firms Location decision
	Factors influencing the heavy metal bioaccessibility in soils were site dependent from different geographical locations SCI/SSCI论文 OAI收割 2015 作者: Zhu X. D.; Yang, F.; Wei, C. Y. 收藏 \| 浏览/下载：163/0 \| 提交时间：2015/12/09 BCR Factor analysis Geographical location SBET Soil properties sequential extraction procedure health-risk assessments urban soils trace-metals park soils pb bioavailability china lead zn
	The challenge of wide application of information and communication technologies to traditional location theory SCI/SSCI论文 OAI收割 2013 Song Z. Y.; Liu W. D. 收藏 \| 浏览/下载：32/0 \| 提交时间：2014/12/24 information and communication technologies location factor time-cost clusters agglomeration enterprise geography firms
	Active pixel sensor geometrical characteristic effects on star image subdivided locating accuracy for star tracker (EI CONFERENCE) 会议论文 OAI收割 ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China 作者: Liu J.; Liu J.; Liu J.; Li J.; Li J. 收藏 \| 浏览/下载：27/0 \| 提交时间：2013/03/25 Active pixel sensor (APS) star tracker becomes an investigated hotspot because of its technical advantages. And centroid algorithm is a subpixel method proper to star position calculation because of its high accuracy and simplicity. When centroid algorithm is applied on APS star tracker APS pixel geometrical characteristics might effect on star image position accuracy. Because the amplifier circuit and other function circuits inter pixel of APS take up some pixel area the Fill Factor is less than 100%. Moreover the active sensitive area has a certain geometrical shape such as square rectangle and L shape. The Fill Factor of pixel influences on star image subdivided locating accuracy when using centioid algorithm. In this paper we have analyzed all pixel geometrical characteristics influence on the star position accuracy. From simulation experiments we can conclude that Fill factor and pixel geometric shape influence on star position accuracy. The star locating error increased when Fill Factor decreased and different geometrical shape of active sensitive area of pixel can make different influence on star location accuracy the symmetrical sensitive area in x or y axis have symmetrical location error in the same axis.
	Key techniques of laser direct writing of fine lines on the spherical surface (EI CONFERENCE) 会议论文 OAI收割 ICO20: Optical Design and Fabrication, August 21, 2005 - August 26, 2005, Changchun, China Liang F.; Hu J. 收藏 \| 浏览/下载：21/0 \| 提交时间：2013/03/25 The main principles of laser direct writing (LDW) system for lines on the spherical surface (SS) are discussed. It is pointed out that line profile is determined by the exposure dose distribution which lies on the light intensity distribution of focus plane and the scanning speed. To improve the quality of line profile on the SS several key techniques as follows are introduced. Firstly the unique system configuration four axes mutually intersecting at the center of the SS is adopted which ensures the shape of the focus be maintained circular during the writing period. Secondly an automatic focus system (AFS) with the function of automatic focus in a certain range is introduced. Thirdly to guarantee the linear velocity to accord with the exposure character of the photoresist all the time an efficient arithmetic that controls motors run at appropriate angular velocity in different latitude is developed. Finally to achieve a stable and well-behaved system so as to compensate the velocity instability resulting from unavoidable errors of mechanical and electronics factor a powerful programmable multi-axis controller (PMAC) is utilized as the kernel element of the servocontrol system and the curves of step response and parabolic response achieved by feedforward and PID loop tuning indicate that the location precision and velocity stability have reached a high level. The experimental results of LDW of lines on the SS work piece with a diameter 30 mm and a radius equal to 100 mm are given. The section analysis of the lines on the photoresist by the atomic force microscope (AFM) after exposure and development is performed. The results show that line width is about 3.0 m and the steep sides of the lines are parallel to each other.
	Distribution and transcription activity of nucleolar DNA in higher plant cells 期刊论文 OAI收割 CELL BIOLOGY INTERNATIONAL, 2001, 卷号: 25, 期号: 11, 页码: 1167-1171 作者: Tao, W; Xu, W; Valdivia, MM; Hao, S; Zhai, ZH \| 收藏 \| 浏览/下载：19/0 \| 提交时间：2011/08/22 nucleolus location of nucleolar DNA in situ transcription sites of rRNA genes RNA polymerase I transcription factor (UBF) Alllium cepa