Metadata Guidelines for Digital Resources at Texas A&M University Libraries

These guidelines were written to help TAMU partners create high quality metadata for digital collections deposited in the repository at TAMU Libraries. The goal is to ensure an acceptable level of consistency and completeness of metadata across all collections in the repository in order maximize their potential for discovery for the TAMU community. These guidelines were also written to help Digital Initiatives personnel at TAMU Libraries to map metadata to appropriate fields in Dublin Core and MODS, the two most commonly used schema within the TAMU repository. The guidelines, as they are currently written, address metadata elements that may be recorded for ALL digital collections within the repository, regardless of whether they consist of text, still images, video, or any other type of content. It is likely that specific formats may require additional metadata than what is currently described in this document. More specific guidelines for various formats may be added to this document in the future. It should be noted that this document is a work in progress and will continue to be revised and expanded upon

The role of sexual imprinting in speciation: lessons from deer mice (genus Peromyscus)

Sexual imprinting, the process of learning mate preferences at a young age, could promote speciation by reducing attraction to individuals from divergent populations or species, consequently creating or maintaining reproductive isolation. Yet, despite the documentation of sexual imprinting in many taxa, its connection to speciation has been understudied. I chose to explore the potential link between sexual imprinting and reproductive isolation and in two North American rodents--the white-footed mouse (Peromyscus leucopus) and its sister species, the cotton mouse (Peromyscus gossypinus). These species have overlapping distributions in nature, possibly allowing interbreeding and admixture. In Chapter 1, I used double-digest restriction-associated DNA sequencing to test for hybridization in sympatric natural populations and found that 1.5% of sampled individuals showed evidence of admixture yet the species have maintained genetic distinctness in sympatry. In the lab, the species hybridize when given no choice of mates but mate more readily with conspecifics, suggesting that mating preferences may prevent hybridization in the wild. In Chapter 2, I tested whether mating preferences create significant reproductive isolation. I measured mating preferences in controlled laboratory conditions and found that both species and sexes preferred conspecific to heterospecific mates in 85% of trials. I then raised offspring with foster parents of the opposite species and found that P. leucopus has a genetically-determined preference while P. gossypinus learns its preference. In Chapter 3, I tested whether sexual imprinting on parental diet could generate assortative mating within a species. I tested this hypothesis by feeding P. gossypinus parents either orange- or garlic-flavored water, thereby exposing their offspring to these flavors through their parents until weaning. I tested the preferences of these offspring as adults and found that P. gossypinus, especially females, had strong assortative mating preferences. This implies that at least females learn parental dietary information and that assortative mating could evolve within a single generation. Together, my results confirm that sexual imprinting on parental traits--possibly mediated through dietary differences--can create assortative mating capable of generating sexual isolation and reducing gene flow between species. My research supports the importance of mating preferences and learning in speciation

Suppressed dependence of polarization on epitaxial strain in highly polar ferroelectrics

A combined experimental and computational investigation of coupling between polarization and epitaxial strain in highly polar ferroelectric PbZr_0.2Ti_0.8O_3 (PZT) thin films is reported. A comparison of the properties of relaxed (tetragonality c/a = 1.05) and highly-strained (c/a = 1.09) epitaxial films shows that polarization, while being amongst the highest reported for PZT or PbTiO_3 in either film or bulk forms (P_r = 82 microC/cm^2), is almost independent of the epitaxial strain. We attribute this behavior to a suppressed sensitivity of the A-site cations to epitaxial strain in these Pb-based perovskites, where the ferroelectric displacements are already large, contrary to the case of less polar perovskites, such as BaTiO_3. In the latter case, the A-site cation (Ba) and equatorial oxygen displacements can lead to substantial polarization increases.Comment: 4 pages, 3 figure

Structural Insights into Rational Design of Single-Domain Antibody-Based Antitoxins against Botulinum Neurotoxins.

Botulinum neurotoxin (BoNT) is one of the most acutely lethal toxins known to humans, and effective treatment for BoNT intoxication is urgently needed. Single-domain antibodies (VHH) have been examined as a countermeasure for BoNT because of their high stability and ease of production. Here, we investigate the structures and the neutralization mechanisms for six unique VHHs targeting BoNT/A1 or BoNT/B1. These studies reveal diverse neutralizing mechanisms by which VHHs prevent host receptor binding or block transmembrane delivery of the BoNT protease domain. Guided by this knowledge, we design heterodimeric VHHs by connecting two neutralizing VHHs via a flexible spacer so they can bind simultaneously to the toxin. These bifunctional VHHs display much greater potency in a mouse co-intoxication model than similar heterodimers unable to bind simultaneously. Taken together, our studies offer insight into antibody neutralization of BoNTs and advance our ability to design multivalent anti-pathogen VHHs with improved therapeutic properties

Core Metadata Elements: Guidelines to Promote Consistency and Access at TAMU

In December of 2017, the Metadata Task Group was formed in response to answer a two part problem. One was to determine the metadata workflow for projects being placed into A&M OAKTrust digital repository. The other was to recommend metadata schema for the DAME, a relatively new concept design to create an inter-operability system involving multiple formats and computer programs. Although much of the focus was on how to handle workflow for digital projects and suggest metadata schema for two specific platforms (D-Space and Fedora), it soon became obvious to the task group that all metadata must be compatible with metadata in other systems within the DAME. Thus, we explored the necessity of consistent metadata and imputing standards in order to provide maximum accessibility to our users, while also trying to be efficient with library resources

Metadata Guidelines for Digital Resources at Texas A&M University Libraries

These guidelines were written to help TAMU partners create high quality metadata for digital collections deposited in the repository at TAMU Libraries. The goal is to ensure an acceptable level of consistency and completeness of metadata across all collections in the repository in order maximize their potential for discovery for the TAMU community. These guidelines were also written to help Digital Initiatives personnel at TAMU Libraries to map metadata to appropriate fields in Dublin Core and MODS, the two most commonly used schema within the TAMU repository. The guidelines, as they are currently written, address metadata elements that may be recorded for ALL digital collections within the repository, regardless of whether they consist of text, still images, video, or any other type of content. It is likely that specific formats may require additional metadata than what is currently described in this document. More specific guidelines for various formats may be added to this document in the future. It should be noted that this document is a work in progress and will continue to be revised and expanded upon

Report of the DAMENames Ad Hoc Committee

In early 2018, the DAMEid group requested that Cataloging and Metadata unit examine the metadata needs for the DAME. When analyzing metadata needs in both OAKTrust and Fedora, it became clear that the lack of name authority control was causing serious problems for users, especially in the case of a single author having many entries in the author index. For example, Steven M. Wright, Royce E. Wisenbaker, Professor II in Chemical and Electrical Engineering, has 10 different entries for his name. This problem is caused by the lack of authority control and the inconsistent ways in which names are inputted into Vireo and OAKTrust. In their report to the DAMEid committee, the Metadata and Cataloging librarians strongly suggested that some type of name authority control be implemented within the DAME. In smaller repositories with few names and fewer entities (e.g., persons, organizations, subjects, etc.), the absence of explicit disambiguation or authority control can be a manageable problem. When only a few authors share a name, it is easy to tell them apart based on the subject matter of the works attached to the name. The problem compounds as collections grow larger and the number of entities with the same name that need to be distinguished from each other increases. For example, in the large OAKTrust IR, it is hard for a user to identify the "Steven Wright" that he or she is looking for, as there are several authors so named with dozens of items in the IR. Another issue that emerges in a system with no authority control – such as OAKTrust – is that an everyday typographical error (an extra space, no period after an initial, misspellings, etc.) results in a new entry in the author list. This results in multiple names for one person and it means that there is no way for a user to easily identify all the works attributed to one author

Stripped of illusions? Exploring system justification processes in Capitalist and post-Communist societies

Sociologists and political scientists have often observed that citizens of Central and Eastern Europe express high levels of disillusionment with their social, economic and political systems, in comparison with citizens of Western capitalist societies. In this review, we analyze system legitimation and delegitimation in post-Communist societies from a social psychological perspective. We draw on system justification theory, which seeks to understand how, when and why people do (and do not) defend, bolster and justify existing social systems. We review some of the major tenets and findings of the theory and compare research on system-justifying beliefs and ideologies in traditionally Capitalist and post-Communist countries to determine: (1) whether there are robust differences in the degree of system justification in post-Communist and Capitalist societies, and (2) the extent to which hypotheses derived from system justification theory receive support in the post-Communist context. To this end, we summarize research findings from over 20 countries and cite previously unpublished data from a public opinion survey conducted in Poland. Our analysis confirms that there are lower levels of system justification in post-Communist countries. At the same time, we find that system justification possesses similar social and psychological antecedents, manifestations and consequences in the two types of societies. We offer potential explanations for these somewhat complicated patterns of results and conclude by addressing implications for theory and research on system justification and system change (or transition)

Feasibility study of smartphone application for self-monitoring dietary intake among cancer patients

Objective: Evidence accumulates that optimal nutrition status positively influences cancer treatment outcomes. A "smartphone application" (intelligent dietitian support apps, iDSA) was developed to act as a tool to assist patients in terms of dietary monitoring. This study aimed to examine the feasibility of iDSA for self-monitoring dietary intake among cancer patients. Method: This was a pilot study. Eligible patients were approached and recruited. Dietitian entered individual estimated energy protein requirement into iDSA after installation. Participants recorded and monitored own daily dietary intake. Dietitian arranged for a two-week follow up to monitor nutritional status (weight and dietary intake). Results: This study enrolled 14 participants, six males and eight females, with a mean age of 36.4 ± 10.1 years. iDSA improved participants’ nutritional outcomes significantly; weight gained 1.2 ± 0.2 kg, increased energy intake 215 ± 100 kcal/day and protein intake 8 ± 5.1 g/day. There were 92.9% of participants agreed or totally agreed that they were able to monitor and increase dietary intake during using iDSA. However, about 57.1% reported that it was burdensome to record their diet daily and sometimes they forgot to record their food intake. Conclusion: Self-monitoring dietary intake via intelligent dietitian support apps was feasible among cancer patients. With compliance to iDSA resulted in an increase in dietary intake and body weight after two-week. iDSA usability was rated good and can be used to study dietary intake among cancer patients