From Textbooks To Safety Briefings: Helping Technical Writers Negotiate Complex Rhetorical Situations

In this dissertation, I analyze the organizational and political constraints that technical writers encounter when dealing with complex rhetorical situations, particularly within risk-management discourse. I ground my research in case studies of safety briefings that airlines provide to their passengers because these important documents have long been regarded as ineffective, yet they ve gone largely unchanged in the last 20 years. Airlines are required to produce these safety briefings, which must satisfy multiple audiences, such as corporate executives, federal safety inspectors, flight attendants, and passengers. Because space and time are limited when presenting safety information to passengers, the technical writers must negotiate constraints related to issues such as format, budget, audience education and language, passenger perceptions/fears, reproducibility, and corporate image/branding to name a few. The writers have to negotiate these constraints while presenting important (and potentially alarming) information in a way that s as informative, realistic, and tasteful as possible. But such constraints aren t unique to the airline industry. Once they enter the profession, many writing students will experience complex rhetorical situations that constrain their abilities to produce effective documentation; therefore, I am looking at the theories and skills that we re teaching our future technical communicators for coping with such situations. By applying writing-style and visual-cultural analyses to a set of documents, I demonstrate a methodology for analyzing complex rhetorical situations. I conclude by proposing a pedagogy that teachers of technical communication can employ for helping students assess and work within complex rhetorical situations, and I offer suggestions for implementing such practices in the classroom

The Dawn of Open Access to Phylogenetic Data

The scientific enterprise depends critically on the preservation of and open access to published data. This basic tenet applies acutely to phylogenies (estimates of evolutionary relationships among species). Increasingly, phylogenies are estimated from increasingly large, genome-scale datasets using increasingly complex statistical methods that require increasing levels of expertise and computational investment. Moreover, the resulting phylogenetic data provide an explicit historical perspective that critically informs research in a vast and growing number of scientific disciplines. One such use is the study of changes in rates of lineage diversification (speciation - extinction) through time. As part of a meta-analysis in this area, we sought to collect phylogenetic data (comprising nucleotide sequence alignment and tree files) from 217 studies published in 46 journals over a 13-year period. We document our attempts to procure those data (from online archives and by direct request to corresponding authors), and report results of analyses (using Bayesian logistic regression) to assess the impact of various factors on the success of our efforts. Overall, complete phylogenetic data for ~60% of these studies are effectively lost to science. Our study indicates that phylogenetic data are more likely to be deposited in online archives and/or shared upon request when: (1) the publishing journal has a strong data-sharing policy; (2) the publishing journal has a higher impact factor, and; (3) the data are requested from faculty rather than students. Although the situation appears dire, our analyses suggest that it is far from hopeless: recent initiatives by the scientific community -- including policy changes by journals and funding agencies -- are improving the state of affairs

Finishing the euchromatic sequence of the human genome

The sequence of the human genome encodes the genetic instructions for human physiology, as well as rich information about human evolution. In 2001, the International Human Genome Sequencing Consortium reported a draft sequence of the euchromatic portion of the human genome. Since then, the international collaboration has worked to convert this draft into a genome sequence with high accuracy and nearly complete coverage. Here, we report the result of this finishing process. The current genome sequence (Build 35) contains 2.85 billion nucleotides interrupted by only 341 gaps. It covers ∼99% of the euchromatic genome and is accurate to an error rate of ∼1 event per 100,000 bases. Many of the remaining euchromatic gaps are associated with segmental duplications and will require focused work with new methods. The near-complete sequence, the first for a vertebrate, greatly improves the precision of biological analyses of the human genome including studies of gene number, birth and death. Notably, the human enome seems to encode only 20,000-25,000 protein-coding genes. The genome sequence reported here should serve as a firm foundation for biomedical research in the decades ahead