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Publikováno v:
Large-scale Assessments in Education, Vol 5, Iss 1, Pp 1-20 (2017)
Abstract Position effects may occur in both paper–pencil tests and computerized assessments when examinees respond to the same test items located in different positions on the test. To examine position effects in large-scale assessments, previous s
Externí odkaz:
https://doaj.org/article/ca73ac2b7a1c440688a7e4d2a4baf125
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 71, Iss 4, Pp o224-o224 (2015)
In the title hydrated salt, C19H24N3+·Br−·H2O, the values of the N—C bond lengths within the tetrahydropyrimidinium ring indicate delocalization of the N=C double bond. In the cation, the dihedral angle formed by the pyridine and benzene rings
Externí odkaz:
https://doaj.org/article/7775e99d5d9d489aa4a8ce7570aa4ccd
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 71, Iss 4, Pp o224-o224 (2015)
Acta Crystallographica Section E: Crystallographic Communications
Acta Crystallographica Section E: Crystallographic Communications
In the title hydrated salt, C19H24N3+·Br−·H2O, the values of the N—C bond lengths within the tetrahydropyrimidinium ring indicate delocalization of the N=C double bond. In the cation, the dihedral angle formed by the pyridine and benzene rings
Autor:
Ming-shui Zhao, Ying-xiong Qiu, Yan-qi Quo, Jian-xin Chen, Cheng-Xin Fu, Shu-zhen Yang, Qian Ye
Publikováno v:
Journal of Zhejiang University SCIENCE B. 7:868-872
Sinocalycanthus chinensis, an endangered species endemic to China, is cultivated as an ornamental landscape tree in China. However, S. chinensis, Chimonanthus species and Calycanthus floridus are difficult to be distinguished in seedling market becau
Publikováno v:
2010 17th IEEE International Conference on Electronics, Circuits & Systems (ICECS); 2010, p623-626, 4p
Publikováno v:
Angle Orthodontist; Sep2005, Vol. 75 Issue 5, p785-790, 6p
Publikováno v:
Large-scale Assessments in Education, Vol 5, Iss 1, Pp 1-20 (2017)
Position effects may occur in both paper–pencil tests and computerized assessments when examinees respond to the same test items located in different positions on the test. To examine position effects in large-scale assessments, previous studies of