A Graphical Method for Estimation of Barometric Efficiency from Continuous Data - Concepts and Application to a Site in the Piedmont, Air Force Plant 6, Marietta, Georgia

2007 ◽  
Author(s):  
Gerard Gonthier
Keyword(s):  
Air Force ◽  
Graphical Method ◽  
Continuous Data ◽  
Barometric Efficiency ◽  
A Site

The Effect of Usability Guidelines on Web Site User Emotions

2008 ◽  
pp. 1734-1741
Author(s):  
Patricia A. Chalmers
Keyword(s):  
Air Force ◽  
Web Sites ◽  
Web Site ◽  
Lost Sales ◽  
Software Usability ◽  
Usability Problems ◽  
A Site ◽  
And Control ◽  
Access Data ◽  
Site User

Two decades ago, the U.S. Air Force asked human factors experts to compile a set of guidelines for command and control software because of software usability problems. Many other government agencies and businesses followed. Now hundreds of guidelines exist. Despite all the guidelines, however, most Web sites still do not use them. One of the biggest resulting usability problems is that users cannot find the information they need. In 2001, Sanjay Koyani and James Mathews (2001), researchers for medical Web information, found, “Recent statistics show that over 60% of Web users can’t find the information they’re looking for, even though they’re viewing a site where the information exists”. In 2003, Jakob Nielsen (2003), an internationally known usability expert, reported, “On average across many test tasks, users fail 35% of the time when using Web sites.” Now in 2005, Muneo Kitajima, senior researcher with the National Institute of Advanced Industrial Science and Technology, speaks of the difficulties still present in locating desired information, necessitating tremendous amounts of time attempting to access data (Kitajima, Kariya, Takagi, & Zhang, to appear). This comes at great costs to academia, government, and business, due to erroneous data, lost sales, and decreased credibility of the site in the opinion of users. Since emotions play a great role in lost sales and lost credibility, the goal of this study was to explore the question, “Does the use of usability guidelines affect Web site user emotions?” The experimenter tasked participants to find information on one of two sites. The information existed on both sites; however, one site scored low on usability, and one scored high. After finding nine pieces of information, participants reported their frequency of excitement, satisfaction, fatigue, boredom, confusion, disorientation, anxiety, and frustration. Results favored the site scoring high on usability.

The Effect of Usability Guidelines on Web Site User Emotions

2006 ◽  
pp. 179-186
Author(s):  
Patricia A. Chalmers
Keyword(s):  
Air Force ◽  
Web Sites ◽  
Web Site ◽  
Lost Sales ◽  
Software Usability ◽  
Usability Problems ◽  
A Site ◽  
And Control ◽  
Access Data ◽  
Site User

Two decades ago, the U.S. Air Force asked human factors experts to compile a set of guidelines for command and control software because of software usability problems. Many other government agencies and businesses followed. Now hundreds of guidelines exist. Despite all the guidelines, however, most Web sites still do not use them. One of the biggest resulting usability problems is that users cannot find the information they need. In 2001, Sanjay Koyani and James Mathews (2001), researchers for medical Web information, found, “Recent statistics show that over 60% of Web users can’t find the information they’re looking for, even though they’re viewing a site where the information exists”. In 2003, Jakob Nielsen (2003), an internationally known usability expert, reported, “On average across many test tasks, users fail 35% of the time when using Web sites.” Now in 2005, Muneo Kitajima, senior researcher with the National Institute of Advanced Industrial Science and Technology, speaks of the difficulties still present in locating desired information, necessitating tremendous amounts of time attempting to access data (Kitajima, Kariya, Takagi, & Zhang, to appear). This comes at great costs to academia, government, and business, due to erroneous data, lost sales, and decreased credibility of the site in the opinion of users. Since emotions play a great role in lost sales and lost credibility, the goal of this study was to explore the question, “Does the use of usability guidelines affect Web site user emotions?” The experimenter tasked participants to find information on one of two sites. The information existed on both sites; however, one site scored low on usability, and one scored high. After finding nine pieces of information, participants reported their frequency of excitement, satisfaction, fatigue, boredom, confusion, disorientation, anxiety, and frustration. Results favored the site scoring high on usability.

One-Sample Tests in Regional Archaeological Analysis: New Possibilities through Computer Technology

1990 ◽  
Vol 55 (2) ◽  
pp. 367-381 ◽  
Author(s):  
Kenneth L. Kvamme
Keyword(s):  
Computer Technology ◽  
Statistical Tests ◽  
Continuous Data ◽  
Data Types ◽  
Testing Strategies ◽  
Sample Testing ◽  
Using Data ◽  
A Site ◽  
Archaeological Analysis ◽  
Central Arizona

Archaeologists commonly employ two-sample statistical tests in regional locational analyses that compare environmental measurements obtained at site locations against measurements taken at random locations from the background environment. One-sample tests that compare a site sample against a background standard are conceptually and statistically superior, but have been difficult to implement for continuous data types. This situation now is changed owing to a relatively new computer technology known as Geographic Information Systems (GIS). GIS can provide a complete description of the nature of the background environment of entire regions for categorical and continuous data types, thereby allowing the ready application of one-sample testing strategies. Examples of several GIS-based one-sample tests are given using data from east-central Arizona. Such conventional tests only should be applied, however, when the observations can be shown to be statistically independent through tests for spatial autocorrelation.

Eels Under Standing Wave Conditions

1982 ◽  
Vol 40 ◽  
pp. 492-495
Author(s):  
O.L. Krivanek ◽  
J. TaftØ
Keyword(s):  
Standing Wave ◽  
Wave Conditions ◽  
Set Up ◽  
A Site ◽  
Complex Crystal

It is well known that a standing electron wavefield can be set up in a crystal such that its intensity peaks at the atomic sites or between the sites or in the case of more complex crystal, at one or another type of a site. The effect is usually referred to as channelling but this term is not entirely appropriate; by analogy with the more established particle channelling, electrons would have to be described as channelling either through the channels or through the channel walls, depending on the diffraction conditions.

Head Size and DNA Content in Bacteriophage T4

1972 ◽  
Vol 30 ◽  
pp. 200-201
Author(s):  
Fred Eiserling ◽  
A. H. Doermann ◽  
Linde Boehner
Keyword(s):  
Electron Microscopy ◽  
Dna Content ◽  
Bacteriophage T4 ◽  
Head Size ◽  
Virus Particles ◽  
Altered Protein ◽  
A Cell ◽  
Bacterial Viruses ◽  
A Site ◽  
Protein Shell

The control of form or shape inheritance can be approached by studying the morphogenesis of bacterial viruses. Shape variants of bacteriophage T4 with altered protein shell (capsid) size and nucleic acid (DNA) content have been found by electron microscopy, and a mutant (E920g in gene 66) controlling head size has been described. This mutant produces short-headed particles which contain 2/3 the normal DNA content and which are non-viable when only one particle infects a cell (Fig. 1).We report here the isolation of a new mutant (191c) which also appears to be in gene 66 but at a site distinct from E920g. The most striking phenotype of the mutant is the production of about 10% of the phage yield as “giant” virus particles, from 3 to 8 times longer than normal phage (Fig. 2).

Hearing Conservation in the U.S. Air Force

2004 ◽  
Vol 10 (1) ◽  
pp. 25-27
Author(s):  
Jonathan Thomas ◽  
Gabriel Almario
Keyword(s):  
Air Force ◽  
Hearing Conservation ◽  
The U.S

Relation of Statistically Significant, Abnormal, and Typical WAIS-R VIQ-PIQ Discrepancies to Full Scale IQs

2000 ◽  
Vol 16 (2) ◽  
pp. 107-114 ◽  
Author(s):  
Louis M. Hsu ◽  
Judy Hayman ◽  
Judith Koch ◽  
Debbie Mandell
Keyword(s):  
Graphical Method ◽  
The United States ◽  
Full Scale ◽  
True Score ◽  
Absolute Value ◽  
Normative Population ◽  
The Us ◽  
The Mean ◽  
And Performance ◽  
Quadratic Models

Summary: In the United States' normative population for the WAIS-R, differences (Ds) between persons' verbal and performance IQs (VIQs and PIQs) tend to increase with an increase in full scale IQs (FSIQs). This suggests that norm-referenced interpretations of Ds should take FSIQs into account. Two new graphs are presented to facilitate this type of interpretation. One of these graphs estimates the mean of absolute values of D (called typical D) at each FSIQ level of the US normative population. The other graph estimates the absolute value of D that is exceeded only 5% of the time (called abnormal D) at each FSIQ level of this population. A graph for the identification of conventional “statistically significant Ds” (also called “reliable Ds”) is also presented. A reliable D is defined in the context of classical true score theory as an absolute D that is unlikely (p < .05) to be exceeded by a person whose true VIQ and PIQ are equal. As conventionally defined reliable Ds do not depend on the FSIQ. The graphs of typical and abnormal Ds are based on quadratic models of the relation of sizes of Ds to FSIQs. These models are generalizations of models described in Hsu (1996) . The new graphical method of identifying Abnormal Ds is compared to the conventional Payne-Jones method of identifying these Ds. Implications of the three juxtaposed graphs for the interpretation of VIQ-PIQ differences are discussed.

Exploration-Stage Implementation Variation

2014 ◽  
Vol 222 (1) ◽  
pp. 37-48 ◽  
Author(s):  
Stephanie Romney ◽  
Nathaniel Israel ◽  
Danijela Zlatevski
Keyword(s):  
Parent Training ◽  
Average Cost ◽  
Cost Savings ◽  
Training Group ◽  
Group Differences ◽  
Triple P ◽  
Community Based ◽  
Parent Training Program ◽  
A Site ◽  
The Cost

The present study examines the effect of agency-level implementation variation on the cost-effectiveness of an evidence-based parent training program (Positive Parenting Program: “Triple P”). Staff from six community-based agencies participated in a five-day training to prepare them to deliver a 12-week Triple P parent training group to caregivers. Prior to the training, administrators and staff from four of the agencies completed a site readiness process intended to prepare them for the implementation demands of successfully delivering the group, while the other two agencies did not complete the process. Following the delivery of each agency’s first Triple P group, the graduation rate and average cost per class graduate were calculated. The average cost-per-graduate was over seven times higher for the two agencies that had not completed the readiness process than for the four completing agencies ($7,811 vs. $1,052). The contrast in costs was due to high participant attrition in the Triple P groups delivered by the two agencies that did not complete the readiness process. The odds of Triple P participants graduating were 12.2 times greater for those in groups run by sites that had completed the readiness process. This differential attrition was not accounted for by between-group differences in participant characteristics at pretest. While the natural design of this study limits the ability to empirically test all alternative explanations, these findings indicate a striking cost savings for sites completing the readiness process and support the thoughtful application of readiness procedures in the early stages of an implementation initiative.

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