Georgia College & State University

About: Georgia College & State University is a education organization based out in Milledgeville, Georgia, United States. It is known for research contribution in the topics: Population & Higher education. The organization has 950 authors who have published 1591 publications receiving 37027 citations.

Overcoming the loss of blue sensitivity through opsin duplication in the largest animal group, beetles.

Abstract: Opsin proteins are fundamental components of animal vision whose structure largely determines the sensitivity of visual pigments to different wavelengths of light. Surprisingly little is known about opsin evolution in beetles, even though they are the most species rich animal group on Earth and exhibit considerable variation in visual system sensitivities. We reveal the patterns of opsin evolution across 62 beetle species and relatives. Our results show that the major insect opsin class (SW) that typically confers sensitivity to “blue” wavelengths was lost ~300 million years ago, before the origin of modern beetles. We propose that UV and LW opsin gene duplications have restored the potential for trichromacy (three separate channels for colour vision) in beetles up to 12 times and more specifically, duplications within the UV opsin class have likely led to the restoration of “blue” sensitivity up to 10 times. This finding reveals unexpected plasticity within the insect visual system and highlights its remarkable ability to evolve and adapt to the available light and visual cues present in the environment.

Customers' Perception of Electronic Service Delivery in the UK Retail Banking Sector

Abstract: Purpose – This study aims to explore the key factors of the electronic service quality (e‐SQ) perceptions of UK banking customers and to evaluate the customers’ perceptions of their banks’ actual performance on the identified e‐SQ dimensions.Design/methodology/approach – A survey has been used to collect primary data and 135 usable questionnaires were used in the analysis. Questionnaire items were developed through a two‐stage process involving a review of the main measurement scales employed in previous studies and two focus group interviews to identify a series of attributes for assessing electronic banking service quality. Factor analysis procedure was employed to identify the underlying structure among the explored e‐SQ attributes.Findings – Exploratory factor analysis uncovered six composite dimensions of electronic service quality, including the provision of convenient/accurate electronic banking operations; the accessibility and reliability of service provision; good queue management; service perso...

Additional Evidence on the Relationship between Class Size and Student Performance

Abstract: Much of the economic education literature suggests that the principles of economics class size does not significantly affect student performance. However, study methods have varied in terms of the aggregation level (student or class), the measure of performance (TUCE or course letter grade), and the class size measure (e.g., students who completed both the TUCE pretest and posttest). The authors perform an experiment with principles students using total exam points as the dependent variable in a model to explain student performance. By using the same instructor for all sections, the authors control variation in instruction, lecture material, and topic coverage; they also account for variation in student abilities. In contrast to many other studies, the authors find statistically significant evidence that small class size has a positive impact on student performance.