Teaching Leadership from a Communication Perspective

Interest in leadership has intensified during the past decade. This heightened interest in leadership appears to be encouraging communication departments to offer leadership coursework. This article provides a model for a communication-based course in leadership. A sample syllabus, information on preferred teaching methods, and instructional resources are presented

Moving Motherly: Raising Children in the Low-Wage Hospitality Industry

In the hospitality industry, women with children are in a unique position. Government deregulation of corporate labor practices, the exit of manufacturing overseas, and the rise of the service sector economy in the United States has contributed to the development of a surplus, low-wage labor force. Tourism is one subset of this labor force that deserves further attention. Although there is substantial literature on the structure of low-wage labor in tourism economies (Herod and Aguiar, 2006), as well as the impacts on work-family balance (Liladrie, 2009), a less explored topic is the impacts hospitality labor has on mothering. The purpose of this study is to explore the experiences of women with children who 1) work in the hospitality industry and 2) whose work is located in the tourism districts of Seattle, Washington and New Orleans, Louisiana. The investigator used semi-structured, qualitative interviews that asked women about the decisions they make for their children, how their work in hospitality influences their parenting decisions, and how they assign meaning to their roles as mothers. The investigator found that women in the hospitality industry do not separate work and motherhood as two separate spheres. Work is a mothering strategy. The decisions they make for their children are characterized by mobility, particularly through relocation. Finally, this study found that women who work in the hospitality industry navigate various “markers” that stigmatize them in the workplace. The investigator calls this “motherhood markers;” forms of stigma that intensify emotional labor in their workplaces, can create tension with employers and co-workers and, in some cases, termination of their employment

Correlates of Talkaholism in New Zealand: An Intracultural Analysis of the Compulsive Communication Construct

This study focused on correlates of the compulsive communication construct in New Zealand. Participants were 216 New Zealand university students who completed the Talkaholic Scale to measure their tendency to be compulsive communicators. Self-reports of communication apprehension, willingness to conununicate, argumentativeness, innovativeness, and self-monitoring were also completed. Results indicated a weak negative correlation with communication apprehension and weak positive correlations with argumentativeness and selfmonitoring. Differences in talkaholism between males and females were significant, but the amount of variance accounted for by biological sex was very small. This study provides further support for the distinctiveness of the compulsive communication construct and its measurement through the Talkaholic Scale

Epigallocatechin-3-Gallate (EGCG) Suppresses Pancreatic Cancer Cell Growth, Invasion, and Migration partly through the Inhibition of Akt Pathway and Epithelial-Mesenchymal Transition: Enhanced Efficacy when Combined with Gemcitabine.

Most pancreatic cancers are usually diagnosed at an advanced stage when they have already metastasized. Epigallocatechin-3-gallate (EGCG), a major polyphenolic constituent of green tea, has been shown to reduce pancreatic cancer growth, but its effect on metastasis remains elusive. This study evaluated the capacity of EGCG to inhibit pancreatic cancer cell migration and invasion and the underlying mechanisms. EGCG reduced pancreatic cancer cell growth, migration, and invasion in vitro and in vivo. EGCG prevented "Cadherin switch" and decreased the expression level of TCF8/ZEB1, β-Catenin, and Vimentin. Mechanistically, EGCG inhibited the Akt pathway in a time-dependent manner, by suppressing IGFR phosphorylation and inducing Akt degradation. Co-treatment with catalase or N-Acetyl-L-cysteine did not abrogate EGCG's effect on the Akt pathway or cell growth. Moreover, EGCG synergized with gemcitabine to suppress pancreatic cancer cell growth, migration, and invasion, through modulating epithelial-mesenchymal transition markers and inhibiting Akt pathway. In summary, EGCG may prove beneficial to improve gemcitabine sensitivity in inhibiting pancreatic cancer cell migration and invasion, to some extent through the inhibition of Akt pathway and epithelial-mesenchymal transition

The Cyclic Loading Behavior of Grouted Sand

A two-phased static and dynamic laboratory investigation of the behavior of a silicate grout stabilized sand has been undertaken. Through the use of load-controlled cyclic triaxial testing the dynamic strength, stiffness, and deformation characteristics have been assessed as a function of mix design, confinerrent level and loading history. Comparisons between static and dynamic properties are provided

Variance Analysis of Unevenly Spaced Time Series Data

We have investigated the effect of uneven data spacing on the computation of delta (sub chi)(gamma). Evenly spaced simulated data sets were generated for noise processes ranging from white phase modulation (PM) to random walk frequency modulation (FM). Delta(sub chi)(gamma) was then calculated for each noise type. Data were subsequently removed from each simulated data set using typical two-way satellite time and frequency transfer (TWSTFT) data patterns to create two unevenly spaced sets with average intervals of 2.8 and 3.6 days. Delta(sub chi)(gamma) was then calculated for each sparse data set using two different approaches. First the missing data points were replaced by linear interpolation and delta (sub chi)(gamma) calculated from this now full data set. The second approach ignored the fact that the data were unevenly spaced and calculated delta(sub chi)(gamma) as if the data were equally spaced with average spacing of 2.8 or 3.6 days. Both approaches have advantages and disadvantages, and techniques are presented for correcting errors caused by uneven data spacing in typical TWSTFT data sets

Explaining the Effects of Powerless Language Use on the Evaluative Listening Process: A Theory of Implicit Prototypes

This study examined the effects of forewarning arid discounting messages on the evaluational consequences of powerless language use. The specific forewarning message contained information on types of powerless language (including hesitations) and their effects. The general forewarning message excluded mention of hesitations. The discounting message cautioned against making trait attributions based on powerless language behaviors. In Experiment #1, listeners exposed to the specific and general forewarning messages gave lower competence ratings to the lecturer and were less likely to recommend that he be hired as an instructor. The discounting message did not moderate negative evaluations of the lecturer. In Experiment #2, a one week delay was inserted between the forewarning and discounting messages and the oral presentation. No significant differences were found between the activation conditions and the control condition. The results of this study suggest that the theory of implicit prototypes may explain how the evaluative listening process forms impressions of power· less and powerful sources

Rapidly solidified titanium alloys by melt overflow

A pilot plant scale furnace was designed and constructed for casting titanium alloy strips. The furnace combines plasma arc skull melting techniques with melt overflow rapid solidification technology. A mathematical model of the melting and casting process was developed. The furnace cast strip of a suitable length and width for use with honeycomb structures. Titanium alloys Ti-6Al-4V and Ti-14Al-21 Nb were successfully cast into strips. The strips were evaluated by optical metallography, microhardness measurements, chemical analysis, and cold rolling

The Effects of an Instructor\u27s Use of Hesitation Forms on Student Ratings of Quality, Recommendations to Hire, and Lecture Listening

This study examined the impact of instructor use of hesitation forms ( uh, ah, um, and well ) in an initial encounter with the students on three measures of teaching effectiveness: students ratings of teacher quality, student recommendations to hire, and lecture listening. The instruction of any amount of hesitant speech significantly lowered instructor effectiveness as measured by each dependent variable. Generally, the use of higher frequencies of hesitation forms was more damaging than the use of lower frequencies. The findings of this study suggest that the use of other forms of powerless language may also detract from the teacher effectiveness

Class Standing Differences in Bystander Intervention Intentions to Prevent Sexual Assault: A Reasoned Action Approach

The purpose of this study was to examine differences in determinants of bystander intervention (BI) participation based on undergraduate students\u27 year in school using the Reasoned Action Approach (RAA). Students (n = 291) were recruited from general education courses at two universities in the United States and completed an online survey evaluating intentions, attitudes, perceived norms, and perceived behavioral control (PBC) associated with engaging in BI. Next, attitudes, perceived norms, and PBC were used to predict intentions using separate linear regression models – one model with upper-level students and another model with first-year students. Both models significantly predicted intentions, with the upper-level student model (adjusted R2 = 0.609) accounting for more variance compared to the first-year student model (adjusted R2 = 0.469). When compared to upper-level students, freshman also had significantly greater knowledge, intentions, and perceived norms, PBC and autonomy to engage in BI (p \u3c .05). These findings provide an in-depth understanding regarding the role of class standing in BI behavior. Results indicate students have different reasons for engaging/not engaging in BI based on year in school and support the need for targeted BI reinforcement sessions throughout the college years