An Examination of the Effects of Mode of Access on the Computerized Revised Token Test

Background: The Computerized Revised Token Test (CRTT) was recently developed to improve the reliability and accessibility of the Revised Token Test (RTT). The CRTT was standardized using a touchscreen monitor; however, for various reasons, clinicians may need to use a mouse for test administration. In general, research suggests that younger individuals who are familiar with computers are more accurate and prefer to use a mouse. However, this may not be the case for brain-damaged persons with physical limitations. Thus, comparable performance when different input devices are used cannot be assumed. Aims: The purpose was to investigate similarities and differences between participants' performance on subtest and overall scores obtained from touchscreen versus mouse on the CRTT. The study also examined the test-retest reliability of the CRTT when different input devices were used and user preference.Methods & Procedures: Forty young, healthy adults participated in this study. All participants were native English speakers, and had no history of a speech, language, or learning disability. Participants passed a language screening, the Story Retell Procedure (SRP) (McNeil, Doyle, Park, Fossett, & Brodsky, 2002). Each participant took the CRTT with both modes of access, a mouse and a touchscreen, with their non-dominant hand. One-half (20) of the participants were administered both versions of the CRTT a second time. Additionally, all participants answered a preference questionnaire.Outcomes & Results: The results revealed that touchscreen overall scores were significantly higher than mouse scores. There were also significant differences on six of the ten subtests. The test-retest reliability for both versions was equivalent and not significantly different. The results indicated a significant preference for the touchscreen.Conclusions: While the touchscreen access method produced significantly higher subtest and overall CRTT scores than the mouse access method, along with equivalent reliability performance in this young normal participant population, it is not clear that it should be used as the preferred access method. If successful algorithms for equating the previously established psychometric data and normative sample derived from the touchscreen access method can be generated, then there will be no need to re-standardize the test

H.F. Hauff Pruner Housing & Ergonomics

The technology of electric tree pruners in the current agricultural market has many engineering problems, including; a deficit in power output, excessive overheating, and ergonomics. The 3-man pruner team has coordinated with H.F. Hauff Co. Inc., an agricultural equipment company owned by Neil Hauff, to produce an electric pruner prototype which addresses these problems. The methods used to design the optimal pruner prototype includes traditional engineering stress analysis, force flow analysis, finite element software, and Solidworks modeling software. The construction of the pruner involved manual machining methods and C.N.C. (Computerized Numerical Control) mill technology. During the design process, the team learned advanced analysis practices, the relationships between torque and linear output, work fixture design, product design practices, and found that slight modifications to geometry caused a force amplification effect. With the help of Neil, and his staff, the pruner team gained an appreciation and insight into the professional design process and the relationship between part complexity and fabrication time. The finished prototype was able to meet the initially established design requirements of the pruner. However, the design is still limited with regards power output and operation temperature. The design and analysis performed for this project has made it possible for further optimization of the current prototype and some engineering problems of current electric pruners were addressed and fixed. Weaknesses of the design include a high weight and non-optimal center of gravity

Evaluation of HCMM data for assessing soil moisture and water table depth

Soil moisture in the 0-cm to 4-cm layer could be estimated with 1-mm soil temperatures throughout the growing season of a rainfed barley crop in eastern South Dakota. Empirical equations were developed to reduce the effect of canopy cover when radiometrically estimating the soil temperature. Corrective equations were applied to an aircraft simulation of HCMM data for a diversity of crop types and land cover conditions to estimate the soil moisture. The average difference between observed and measured soil moisture was 1.6% of field capacity. Shallow alluvial aquifers were located with HCMM predawn data. After correcting the data for vegetation differences, equations were developed for predicting water table depths within the aquifer. A finite difference code simulating soil moisture and soil temperature shows that soils with different moisture profiles differed in soil temperatures in a well defined functional manner. A significant surface thermal anomaly was found to be associated with shallow water tables

Evaluation of HCMM data for assessing soil moisture and water table depth

Data were analyzed for variations in eastern South Dakota. Soil moisture in the 0-4 cm layer could be estimated with 1-mm soil temperatures throughout the growing season of a rainfed barley crop (% cover ranging from 30% to 90%) with an r squared = 0.81. Empirical equations were developed to reduce the effect of canopy cover when radiometrically estimating the 1-mm soil temperature, r squared = 0.88. The corrective equations were applied to an aircraft simulation of HCMM data for a diversity of crop types and land cover conditions to estimate the 0-4 cm soil moisture. The average difference between observed and measured soil moisture was 1.6% of field capacity. HCMM data were used to estimate the soil moisture for four dates with an r squared = 0.55 after correction for crop conditions. Location of shallow alluvial aquifers could be accomplished with HCMM predawn data. After correction of HCMM day data for vegetation differences, equations were developed for predicting water table depths within the aquifer (r=0.8)

Formal and Informal Discrimination Against Women At Work: The Role of Gender Stereotypes

When asked to think about a hostile environment for women in the workplace, many of us would first envision overt instances of sexual harassment or blatant employment discrimination. These associations are certainly not astonishing: even in an age in which these behaviors are denounced and in large part illegal, such organizational misconduct seems almost commonplace. There have been many high-profile allegations of discrimination leveled against organizations within the last several years (Morris, Bonamici & Neering, 2005). For example, Morgan Stanley’s investment banking business recently paid out $54 million to over 300 female employees who claim to have been denied pay and promotions equal to those received by their male colleagues. Additionally, 1.6 million women who are currently, or were formerly, employed at Wal-Mart are eligible to participate in what is poised to become the largest-ever civil rights lawsuit: like the women of Morgan Stanley, they claim to have been victims of sex discrimination (Greenhouse, 2004). In fact, according to statistics from the Equal Employment Opportunity Commission, there has been no systematic decline over the last 12 years in the number of discrimination lawsuits filed, or the amount of monetary damages awarded to the plaintiffs of these suits (Equal Employment Opportunity Commission, 2004)