Rider University

About: Rider University is a education organization based out in Lawrenceville, New Jersey, United States. It is known for research contribution in the topics: Dosimetry & Creativity. The organization has 881 authors who have published 1934 publications receiving 50752 citations.

Exploratory Bifactor Analysis of the WJ-III Achievement at School Age via the Schmid-Leiman Orthogonalization Procedure

Abstract: The structure of academic achievement measures has been rarely investigated in the literature apart from that which appears in the instruments’ technical manuals. This is concerning, given the widespread use of academic achievement instruments when making educational decisions about children. The Woodcock–Johnson III (WJ-III) Achievement for school-aged children (age 9-19) was investigated using exploratory bifactor analysis via the Schmid–Leiman (SL) orthogonalization procedure. This is the first time the SL has been applied to an academic achievement measure. The results revealed a unidimensional model of academic achievement across the standard 11 subtest battery, a two- or three-factor model at age 9 to 13 in the extended battery, and a two-factor model at age 14 to 19 across the extended battery. Forcing the four-factor fit in the standard battery required extracting eigenvalues as low as 0.67 and yielded areas of both convergence with and divergence from the structure posited in the Technical Manual. Forcing the six-factor fit across the extended battery yielded Heywood Cases, a lack of convergence of the factor solution, and the need to truncate iterations at 2 to force the fit. The results of this study indicate that the WJ-III Achievement is a solid model of general achievement across the 9 to 19 age range. Examination of omega coefficients, the divergent factor structure, and the small amount of variance accounted for by the lower order factors suggest caution when interpreting beyond this level (i.e., the academic clusters). Implications for interpretation of the WJ-III Achievement at age 9 to 19 are discussed.

Line Transversals to Disjoint Balls

Abstract: We prove that the set of directions of lines intersecting three disjoint balls in ℝ3 in a given order is a strictly convex subset of $\mathbb {S}^{2}$. We then generalize this result to n disjoint balls in ℝd. As a consequence, we can improve upon several old and new results on line transversals to disjoint balls in arbitrary dimension, such as bounds on the number of connected components and Helly-type theorems.

Cultural Effects on Business Students’ Ethical Decisions: A Chinese Versus American Comparison

Abstract: The authors used a corporate code of ethics to create 18 scenarios for examining cultural effects on ethical decisions of Chinese versus American business students. Four cultural differences were hypothesized to contribute to overall less ethical decisions of Chinese students. The results support the hypothesis and indicate strong cultural effects on 5 areas of the code: (a) accurate accounting records, (b) proper use of company assets, (c) compliance with laws, (d) trading on inside information, and (e) reporting unethical behavior. Business educators and corporate ethics trainers should be aware of these cultural effects, and provide more coverage and special emphasis on these areas when they have Chinese students or entry-level personnel.

Non-Predatory Shell Damage in Neogene Western Atlantic Deep-Burrowing Bivalves

Abstract: Few shell-crushing predators can excavate prey living deep within the sediment. Despite this infaunal refuge from predators, many deep-burrowing bivalves display a strikingly high incidence of shell damage when compared with species living at shallower depths. A non-predatory origin is necessary to explain this high incidence of injury. To evaluate the generality of this hypothesis, repair frequency (number of repairs per shell), along with position and geometry, were determined for 68 Neogene bivalve species from the US Atlantic and Gulf Coastal Plain, seven of which are classified as deep burrowers (>20 cm depth of sediment penetration). Panopea bitruncata, Panopea floridana, Panopea reflexa, and Panopea americana, which are among the deepest burrowers (up to 100 cm), have repair frequencies (2.8– 6.2) that are higher than any other species, while the value for Cyrtopleura costata (0.76) is exceeded only by semi-infaunal Atrina species (1.12). However, not all deep-burrowing species had such hi...

Generalized order statistics from two parameter uniform distribution

Abstract: In this paper some distributional properties of the generalized order statistics from uniform distribution are given. The minimum variance linear unbiased as well best ( in the sense of minimum mean squared error) invariant estimators of the parameters of the two parameter uniform distribution based on the first m generalized order statistics are presented.