نتائج البحث

A Copula Approach for Predicting Tree Sap Flow Based on Vapor Pressure Deficit

• Authors : Ying Ouyang; Changyou Sun

Subjects: cottonwood; modeling; multi-variate statistics

• Source: Forests, Vol 15, Iss 4, p 695 (2024)

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A Simplified Model for Shear Behavior of Mortar Using Biomimetic Carbonate Precipitation

• Authors : Yu Diao; Jitao Bai; Changyou Sun

Subjects: sand reinforcement; L-aspartic acid; biomimetic carbonate precipitation (BCP)

• Source: Materials, Vol 16, Iss 16, p 5613 (2023)

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Determinants of Temporary Trade Barriers in Global Forest Products Industry

• Authors : Xufang Zhang; Changyou Sun; Jason Gordon

Subjects: antidumping; countervailing; forest sectoragris

• Source: Sustainability; Volume 12; Issue 9; Pages: 3839

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WELFARE IMPLICATIONS OF TIMBERLAND OWNERSHIP CHANGES IN THE U.S. TIMBER MARKETS

• Authors : Mohammad Mahfuzur Rahman; Ian Alexander Munn; Changyou Sun

Subjects: Market equilibrium; Price; Surplus

• Source: International Journal of Food and Agricultural Economics, Vol 4, Iss 3, Pp 33-48 (2016)

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License GPL (> = 2)

• Authors : Changyou Sun; Maintainer Changyou Sun; Lazyload Yes ...

Subjects: Imports systemfit; tseries; urca

• Source: http://cran.md.tsukuba.ac.jp/web/packages/erer/erer.pdf.

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License GPL

• Authors : Changyou Sun; Maintainer Changyou Sun; Depends R ...

• Source: http://dssm.unipa.it/CRAN/web/packages/apt/apt.pdf.

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Common integrating factor in softwood log exports from the United States

• Authors : Jean M. Daniels; Kate C Marcille; Changyou Sun

Subjects: Global and Planetary Change; Geography; Softwood

• Source: Canadian Journal of Forest Research. 50:447-456

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Repository CRAN

• Authors : Changyou Sun; Maintainer Changyou Sun; Lazyload Yes ...

Subjects: of ’Empirical Research in Economics; Growing up with R ’ by Dr

• Source: http://cran.at.r-project.org/web/packages/erer/erer.pdf.

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Repository CRAN

• Authors : Changyou Sun; Maintainer Changyou Sun; Lazyload Yes ...

Subjects: of ’Empirical Research in Economics; Growing up with R ’ by Dr

• Source: http://cran.r-project.org/web/packages/erer/erer.pdf.

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Asymmetric Price Transmission with R Package apt

• Authors : Dr. Changyou Sun; The Pennsylvania State University CiteSeerX Archives

• Source: http://cran.r-project.org/web/packages/apt/vignettes/apt.pdf.

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