<i>Atomic Structure</i>
            . By Leonard B. Loeb. xiv + 446 pp. John Wiley and Sons, Inc., New York, 1938. $4.50.

Montgomery, C. G.

doi:10.1126/science.90.2344.515-b

Cited by 66 publications

(100 citation statements)

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“…As sample sizes increase, the ability (or statistical power) to detect small changes increases. Statistical power is the probability of correctly rejecting the null hypothesis when it is false ( 12 ). For example, statistical power of 0% would mean that when the null hypothesis of a statistical test was incorrect, the experiment would be incapable of detecting this and correctly rejecting the null hypothesis.…”

Section: Methodsmentioning

confidence: 99%

Investigation of IDEAL-CT Device Equivalence: Are All Devices Equal?

Moore

Steger²,

Bowers

et al. 2022

Transportation Research Record: Journal of the Transportation R

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The IDEAL-CT (InDirect tEnsile AsphaLt Cracking Test) has rapidly become a popular cracking test for asphalt mixture acceptance. There have been several studies conducted to ensure this test is sufficient and acceptable for mixture acceptance purposes with respect to testing variability and the test’s ability to detect mixture quality improvements. A potential source of testing variability yet to be comprehensively studied is the variability introduced between testing devices. This paper provides a case study for the potential CTIndex variability, which can be attributed to the test device and the impact this has on determining whether devices are equivalent. The two one-sided tests (TOST) equivalence test, applied to this study, is a more appropriate statistical test to determine device equivalence when compared with typical hypothesis tests like analysis of variance. The TOST requires the user to have an understanding of an acceptable limit of deviation between two devices to determine both the statistical and practical equivalence between devices. This paper details the equivalence testing of 100 unique device-to-device comparisons and provides an example of the importance of using an appropriate number of samples to set achievable limits for accepting device equivalency. A relatively simple approach to assessing equivalence is recommended to IDEAL-CT users in situations in which device-to-device comparisons have real-world consequences. Finally, guidance is provided for selecting a minimum number of samples required to adequately test for device-to-device equivalence.

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Section: Methodsmentioning

confidence: 99%

Investigation of IDEAL-CT Device Equivalence: Are All Devices Equal?

Moore

Steger²,

Bowers

et al. 2022

Transportation Research Record: Journal of the Transportation R

View full text Add to dashboard Cite

show abstract

“…A linear mixed model analysis of variance (ANOVA) was used to account for multiple visits per dancer and multiple diagnoses per visit. 14 Multiple comparisons among each injury category were performed with Bonferroni adjustment to control the type-I error rate. 15 Pearson χ2-test was used to compare injury distributions among the following diagnostic categories: tendon injury, apophysitis, patella pain and instability, stress injury, muscle injury, ligament injury, and fracture (excluding stress fractures).…”

Section: Methodsmentioning

confidence: 99%

Injuries in Irish Dance

Stein¹,

Tyson²,

Johnson³

et al. 2013

J Dance Med Sci

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Irish dance is growing in popularity and competitiveness; however, very little research has focused specifically on this genre of dance. The purpose of this study was to analyze the types of dance injuries incurred by Irish dancers. A chart review was performed to identify all injuries associated with Irish dance seen in the sports medicine or orthopaedic clinics at the investigators' hospital over an 11-year period. "Injury" was defined as any dance-related pain or disorder that led to evaluation in the clinics. Survey data were also collected from study participants. Ultimately, 255 patients from over 30 different schools of dance were seen with injuries directly related (726 clinic visits) or partially related (199 visits) to Irish dance. Participants ranged in age from 4 to 47, with 95% (243/255) under the age of 19. These 255 patients received 437 diagnoses. Almost 80% of the injuries (348/437) were attributable to overuse, and 20.4% were acute and traumatic injuries (89/437). Ninety-five percent (95.9%) of injuries involved the hip or lower extremity. The most common sites were the foot (33.2%), ankle (22.7%), knee (19.7%), and hip (14.4%). Typical diagnoses were tendon injury (13.3%), apophysitis (11.4%), patellofemoral pain and instability (10.8%), stress injury (10.1%), and muscle injury (7.8%). The majority of traumatic injuries were seen in clinic within 3 weeks, but less than a quarter of overuse injuries were seen that quickly. The most common treatment, prescribed to 84.3% of patients, was physical therapy and home exercises, and the majority of dancers (64.3%) were able to return to full dance activity after injury.

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“…n is the number of factors, and m is the number of levels of each factor. 49 According to this formula, it is clear that it is practically impossible to use the full factorial method for cases where the number of factors and levels are large. This study employs DOE techniques and data analysis, called RSM.…”

Section: Doe Applicationmentioning

confidence: 99%

Advanced Process Control Strategy for a Condensate Stabilization Unit: Energy, Exergy, Economic, and Environmental (4E) Study

Shafiei

Azin

Osfouri

et al. 2023

Ind. Eng. Chem. Res.

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This study assesses the energy, exergy, economic, and environmental performance of a gas stabilization unit by employing a new strategy to implement an advanced control system. The advanced process control (APC) strategy is established based on the response surface methodology to assess the real-time performance of the process. The RSM-based APC technique targets the energy, exergy, economic, and environmental (4E) performance of the process in unsteady-state operations. A detailed sensitivity analysis is also conducted to evaluate the relative significance of operating parameters on the objective functions, such as exergy efficiency, energy cost, and CO2 emission. The RSM-based APC strategy proposes an algorithm that can readily be implemented in the plant to increase the plant’s energy performance. Implementing this intelligent control system leads to the production of standard products, while production cost, energy consumption, exergy efficiency, and environmental impacts are enhanced. The exergy and sensitivity results indicate that the stabilization tower has the highest potential for process enhancement, and reboiler temperature is the most influential factor among operating parameters. Also, the RSM-based APC improves the exergy efficiency of the plant by 19% and reduces the energy cost by 13%. At the optimal state, 457 kg/h CO2 emission is prevented.

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Atomic Structure . By Leonard B. Loeb. xiv + 446 pp. John Wiley and Sons, Inc., New York, 1938. $4.50.

Cited by 66 publications

References 0 publications

Investigation of IDEAL-CT Device Equivalence: Are All Devices Equal?

Investigation of IDEAL-CT Device Equivalence: Are All Devices Equal?

Injuries in Irish Dance

Advanced Process Control Strategy for a Condensate Stabilization Unit: Energy, Exergy, Economic, and Environmental (4E) Study

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