Papers by Jennifer Elizabeth Keller Lima
2020 Joint Rail Conference, 2020
In the railroad industry, systematic health inspections of freight railcar bearings are required.... more In the railroad industry, systematic health inspections of freight railcar bearings are required. Bearings are subjected to high loads and run at high speeds, so over time the bearings may develop a defect that can potentially cause a derailment if left in service operation. Current bearing condition monitoring systems include Hot-Box Detectors (HBDs) and Trackside Acoustic Detection Systems (TADS™). The commonly used HBDs use non-contact infrared sensors to detect abnormal temperatures of bearings as they pass over the detector. Bearing temperatures that are about 94°C above ambient conditions will trigger an alarm indicating that the bearing must be removed from field service and inspected for defects. However, HBDs can be inconsistent, where 138 severely defective bearings from 2010 to 2019 were not detected. And from 2001 to 2007, Amsted Rail concluded that about 40% of presumably defective bearings detected by HBDs did not have any significant defects upon teardown and inspecti...
Journal of substance abuse treatment, Jan 17, 2015
A preponderance of relevant research has indicated reduction in anxiety and depressive symptoms f... more A preponderance of relevant research has indicated reduction in anxiety and depressive symptoms following smoking abstinence. This secondary analysis investigated whether the phenomenon extends to smokers with attention deficit hyperactivity disorder (ADHD). The study setting was an 11-Week double-blind placebo-controlled randomized trial of osmotic release oral system methylphenidate (OROS-MPH) as a cessation aid when added to nicotine patch and counseling. Participants were 255 adult smokers with ADHD. The study outcomes are: anxiety (Beck Anxiety Inventory (BAI)) and depressed mood (Beck Depression Inventory II (BDI)) measured one Week and six Weeks after a target quit day (TQD). The main predictor is point-prevalence abstinence measured at Weeks 1 and 6 after TQD. Covariates are treatment (OROS-MPH vs placebo), past major depression, past anxiety disorder, number of cigarettes smoked daily, demographics (age, gender, education, marital status) and baseline scores on the BAI, BDI...
Addictive Behaviors, 2009
Testing manual adherence and treatment discriminability and potency have become increasingly impo... more Testing manual adherence and treatment discriminability and potency have become increasingly important to ensuring the internal validity of treatment studies [Moncher, F.J., & Prinz, R.J., (1991). Treatment fidelity in outcome studies. Clinical Psychology Review, 11, 247-266.]. The objective of this study was therefore to implement the treatment integrity protocol based on the standardized framework proposed by Waltz, Addis, Koerner and Jacobson [Waltz, J., Addis, M.E., Koerner, K., & Jacobson, N.S., (1993). Testing the integrity of a psychotherapy protocol: Assessment of adherence and competence. Journal of Consulting and Clinical Psychology, 61, 620-630.] to assess manual adherence and treatment discriminability and potency in a smoking cessation trial. Audio recordings of 15, 6-week smoking cessation groups were randomly selected from a sample of 31 groups and were rated for treatment integrity. Findings offered partial evidence for manual adherence which did not differ according to treatment condition. Analyses also indicated that the treatments were potent yet not highly discriminable across conditions. Despite some challenges, this preliminary application of the Waltz et al. [Waltz, J., Addis, M.E., Koerner, K., & Jacobson, N.S., (1993). Testing the integrity of a psychotherapy protocol: Assessment of adherence and competence. Journal of Consulting and Clinical Psychology, 61, 620-630.] protocol indicated that it is a promising and flexible tool that may be used to examine different aspects of treatment integrity.
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Papers by Jennifer Elizabeth Keller Lima