Microstructural effects on capacity-rate performance of vanadium oxide cathodes in lithium-ion batteries

Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2005.Includes bibliographical references (leaf 29).Vanadium oxide thin film cathodes were analyzed to determine whether smaller average grain size and/or a narrower average grain size distribution affects the capacity-rate performance in lithium-ion batteries. Vanadium oxide thin films were prepared by sputtering onto ITO-coated glass substrates and crystallized in a refined annealing process to generate diverse microstructures. Average grain size and grain size distribution were determined in SEM analysis. No significant difference was observed in capacity rate behavior with changes in microstructure. However, it is speculated that further in situ analysis may show different relative diffusion rates into grains of differing sizes is related to different microstructures.by Robin M. Davis.S.B

Nondescript: A Web Tool to Aid Subversion of Authorship Attribution

A person’s writing style is uniquely quantifiable and can serve reliably as a biometric. A writer who wishes to remain anonymous can use a number of privacy technologies but can still be identified simply by the words they choose to use — how frequently they use common words like “of,” for instance. Nondescript is a web tool designed first to identify the user’s writing style in terms of word frequency from a given writing sample and document, then to suggest how the author can change their document to lessen its probability of being attributed to them. While Nondescript does not guarantee anonymity, the web tool provides a user with an iterative interface to revise their writing and see results of a simulated authorship attribution scenario. Nondescript also provides a synonym-replacement feature, which significantly lowers the probability that a document will be attributed to the original author. (Code repository: https://github.com/robincamille/nondescript

Depression, Cognition, & Social Determinants of Health: Assessing Associations in Older African Americans with Diabetes

Social determinants of health have been widely identified as characteristics of one’s social and economic climate that affect one’s health outcomes1. (see Graphic 1) The Alzheimer’s Association indicates that rates of Alzheimer’s disease (AD) and other forms of dementia are two times higher in older African Americans than their white counterparts2. People who have diabetes are also at an increased risk. The prevalence and co-morbidity of depression among older Americans with diabetes (both with and without cognitive impairment) has been well established3. Understanding the effect that social determinants of health have on the onset and progression of dementia and depression in older African American diabetics is important as such an understanding may better inform future health policy and government spending on healthcare intervention(s).https://jdc.jefferson.edu/cwicposters/1038/thumbnail.jp

The LMS and the Library

In this column, I give a brief overview of five ways that libraries can be incorporated into a learning management system (LMS), ordered from easiest to most difficult to scale, or in other words, least to most personal: Insert the library in the LMS template Offer embeddable LibGuides to faculty Create a collection of graded modules for faculty use Create an online library mini-course Embed a librarian in a cours

Annotate the web: four ways to mark up web content

Web annotation has been a pipe dream almost since the birth of the Internet itself. Commenting in the margins of a text itself is so simple for paper and print, yet replicating the experience online remains elusive. In this article, I examine four tools for private or public web annotation. Hypothesis and Genius offer users a shareable way to annotate webpages line by line and start conversations in the margins. Pinboard and Evernote allow users to organize and save web documents and add private annotations

The Future of Web Citation Practices

Citing webpages has been a common practice in scholarly publications for nearly two decades as the Web evolved into a major information source. But over the years, more and more bibliographies have suffered from “reference rot”: cited URLs are broken links or point to a page that no longer contains the content the author originally cited. In this column, I look at several studies showing how reference rot has affected different academic disciplines. I also examine citation styles’ approach to citing web sources. I then turn to emerging web citation practices: Perma, a “freemium” web archiving service specifically for citation; and the Internet Archive, the largest web archive

Hackathons for Libraries and Librarians

Hackathons can be ideal opportunities for libraries and librarians to promote new services and tools. In these social events, attendees form teams and work on a project together within a given time limit. This article explains hackathons, provides a brief history, and details how libraries and librarians can get involved. Similar event structures, like hack days and edit-a-thons, are also considered

Perspectives Regarding Care of Students Enrolled in Special Education Day Schools for Emotionally Disabled Students

The purpose of this study was the program evaluation of a special education day school for students with emotional disabilities by analyzing data from the perspectives of the staff employed by the day school and the parents of students enrolled in the day school. The evaluation will enable the day school to make decisions about which aspects of the program to continue, strengthen, or discontinue. In this study, Malcom Provus’ Discrepancy Evaluation Model (DEM) was used. The population included staff employed by the day schools and parents of students enrolled in the program during May, 2016. Data were gathered from the teachers, principals, BEIs, therapist, case managers and parents. The study was organized into four domains: (1) academic, (2) social skills, (3) mental health, and (4) sustainability. The majority of the participants were parents. The total staff members combined totaled 47 which included: principals, case managers, therapist, behavioral educational interventionists, and teachers. The largest proportion of the population reported their association with the RS as 3-4 years. The purpose of this study was the program evaluation of a special education day school for students with emotional disabilities by analyzing data from the perspectives of the staff employed by the day school and the parents of students enrolled in the day school. The evaluation will enable the day school to make decisions about which aspects of the program to continue, strengthen, or discontinue. In this study, Malcom Provus’ Discrepancy Evaluation Model (DEM) was used. The population included staff employed by the day schools and parents of students enrolled in the program during May, 2016. Data were gathered from the teachers, principals, BEIs, therapist, case managers and parents. The study was organized into four domains: (1) academic, (2) social skills, (3) mental health, and (4) sustainability. The majority of the participants were parents. The total staff members combined totaled 47 which included: principals, case managers, therapist, behavioral educational interventionists, and teachers. The largest proportion of the population reported their association with the RS as 3-4 years