Prompting authentic blogging practice in an online graduate course

Blogging is characterized by an individual exploration of ideas of personal interest through frequent online posts, documenting ideas as they emerge over time. Community emerges as bloggers read and link across blogs, based on shared interests. Blogs have gained acceptance in higher education for a variety of instructional activities, among which, reflective journal writing is popular. In this study, we examine a project in which blogs were implemented within an online graduate course in order to create opportunities for students to reflect on their academic, professional and personal interests, with the goal of establishing consistent blogging that exhibits the timely, frequent and interest-driven practices of blogging practices outside educational contexts. Students enrolled in an online graduate course maintained individual blogs in which they were prompted to write about their interests and experiences as graduate students. Through an analysis of the patterns of prompt use and blog content, as well as data from a post-course survey and an online discussion, we explore how to support student engagement with blogging practice within an educational setting. Findings suggest that frequency of writing, topic resonance with the students own interests, and the timeliness of entries were key factors in scaffolding writing that aligns with blogging practice. By focusing on writing as characterized by authentic blogging practice, this study contributes to an understanding of how to harness the unique communicative elements of the blog in post-secondary settings.     

Predicting nuclear power-plant operator performance using discrete event simulation

A study was conducted to evaluate the use of discrete event simulation (DES) to predict human performance in a nuclear power plant control room environment. Computer simulation models of two disturbance scenarios were built using a simulation software program, Micro Saint. In parallel, data were also collected at a full-scope training simulator at the Halden man-machine laboratory (HAMMLAB) in Halden, Norway, using crews of commercial nuclear power plant operators from the Loviisa nuclear power plant in Loviisa, Finland. Comparisons were made between predicted operator performance data generated by the simulation models and crew performance in the HAMMLAB experiment to determine the degree of agreement between the simulated data and the data from operators. The models were then used to extrapolate advanced control room conditions and alarm systems that were not tested in the HAMMLAB experiment. This report summarizes these findings and provides recommendations for improvements to the DES approach for use by a regulatory agency.     

Solvent-Free Electrolyte for High-Temperature Rechargeable Lithium Metal Batteries

The formation of lithiophobic inorganic solid electrolyte interphase (SEI) on Li anode and cathode electrolyte interphase (CEI) on the cathode is beneficial for high-voltage Li metal batteries. However, in most liquid electrolytes, the decomposition of organic solvents inevitably forms organic components in the SEI and CEI. In addition, organic solvents often pose substantial safety risks due to their high volatility and flammability. Herein, an organic-solvent-free eutectic electrolyte based on low-melting alkali perfluorinated-sulfonimide salts is reported. The exclusive anion reduction on Li anode surface results in an inorganic, LiF-rich SEI with high capability to suppress Li dendrite, as evidenced by the high Li plating/stripping CE of 99.4% at 0.5  mA cm⁻² and 1.0 mAh cm⁻², and 200-cycle lifespan of full LiNi_0.8Co_0.15Al_0.05O₂ (2.0 mAh cm⁻²) || Li (20 µm) cells at 80 °C. The proposed eutectic electrolyte is promising for ultrasafe and high-energy Li metal batteries.     

The Positive and Negative Effects of Anger on Dispute Resolution: Evidence From Electronically Mediated Disputes.

Scholars have argued that anger expressed by participants in mediation is counterproductive; yet, there is also reason to believe that expressions of anger can be productive. The authors tested these competing theories of emotion by using data from online mediation. Results show that expression of anger lowers the resolution rate in mediation and that this effect occurs in part because expressing anger generates an angry response by the other party. However, when respondents are especially vulnerable, expressions of anger by the filer do not hinder settlement. The authors also examined precursors to anger, such as value of dispute and reputation, and the degree to which a focus on dispute resolution is reciprocated. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Tailoring Enzyme Stringency Masks the Multispecificity of a Lyngbyatoxin (Indolactam Alkaloid) Nonribosomal Peptide Synthetase

Indolactam alkaloids are activators of protein kinase C (PKC) and are of pharmacological interest for the treatment of pathologies involving PKC dysregulation. The marine cyanobacterial nonribosomal peptide synthetase (NRPS) pathway for lyngbyatoxin biosynthesis, which we previously expressed in E. coli, was studied for its amenability towards the biosynthesis of indolactam variants. Modification of culture conditions for our E. coli heterologous expression host and analysis of pathway products suggested the native lyngbyatoxin pathway NRPS does possess a degree of relaxed specificity. Site-directed mutagenesis of two positions within the adenylation domain (A-domain) substrate-binding pocket was performed, resulting in an alteration of substrate preference between valine, isoleucine, and leucine. We observed relative congruence of in vitro substrate activation by the LtxA NRPS to in vivo product formation. While there was a preference for isoleucine over leucine, the substitution of alternative tailoring domains may unveil the true in vivo effects of the mutations introduced herein.     

Building more resilient communities with a wildfire preparedness drill in the U.S.: Individual and community influences and communication practices

When a wildfire strikes, it impacts entire communities. Yet it can be challenging to get communities to take the lead in becoming more prepared, and thus build lasting resilience. Guided by theoretical preparedness models, and using a case study design, this study examines the planning, execution, and subsequent sensemaking around one of the first community-led wildfire evacuation drills in the United States. Findings illustrate the interplay between individual preparedness, communication, and community involvement as the neighbourhood studied conducted their drill in partnership with multiple emergency response organizations. Our model explains 39% of the variance in individuals' preparedness, finding that people with higher self-efficacy, more involved with the community, and who felt strong social norms around preparedness had more items prepared for a wildfire. The community's desire to share the preparedness organizing process with external audiences is a unique and important contribution in understanding how communication can be used to sustain community resilience.