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X. Chen
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Mechanical Engineering Transportation

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Research trends on land use changes during 1991–2015: A Bibliometric Analysis J. Zhang; B. Wang; X. Chen; X. Wu; D. Zhang
Lowland Technology International Vol 21 No 1, June (2019)
Publisher : International Association of Lowland Technology

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Abstract

Land use changes, as a practical and advanced space exploration technology, offered a lot of valuable data about the earth surface for global analysis, detailed assessment, environmental monitoring, mapping, change detection, disaster management, and civil and military intelligence. To provide a better understanding of global trends in land use changes research over the past 25 years and offer an informed perspective on future research, a bibliometric analysis of published land use changes research was conducted to evaluate current research trends from various perspectives quantitatively and qualitatively for the period of 1991-2015 based on SCIE&SSCI databases. This study is concentrated on the analysis of scientific outputs, research directions, source journals, author performance and their contribution, the distribution of research countries/territories as well as institutions and their collaboration and temporal trends in keywords usage.
INFLUENCE OF SPINDLE SPEED ON ALUMINUM SURFACE ALLIANCE IN CONVENTIONAL AND CNC LATHE MACHINE X. Chen; C. Lin; I.S. Cebro
INTERNATIONAL JOURNAL ENGINEERING AND APPLIED TECHNOLOGY (IJEAT) Vol. 1 No. 1 (2018): International Journal of Engineering and Applied Technology (IJEAT)
Publisher : Nusa Putra University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.1541436

Abstract

The level of surface roughness of a metal in the lathe process depends on the process; spindle rotation, cutting speed, feed speed, cutting tool material, cooling process and machine condition. The objective of this research is to know spindle rotation relationship to aluminum surface roughness on the conventional lathe and CNC lathe. The test specimens amounted to 36 for the conventional lathe and 36 for the CNC lathe. Spindle rotation varied at 9 levels of rotation ie 90 rpm, 100 rpm, 155 rpm, 190 rpm, 260 rpm, 320 rpm, 440 rpm, 540 rpm and, 740 rpm. Each spindle level rotates four specimens. The measurement results show that on the conventional lathe the higher the spindle spin the higher the level of surface roughness, while on the CNC lathe the higher the spindle spin the lower the surface roughness level.
Co-Authors B. Wang C. Lin D. Zhang I.S. Cebro J. Zhang X. Wu