Jared Nystrom, Raymond R. Hill, Andrew Geyer, Joseph J. Pignatiello and Eric Chicken
Present a method to impute missing data from a chaotic time series, in this case lightning prediction data, and then use that completed dataset to create lightning prediction…
Abstract
Purpose
Present a method to impute missing data from a chaotic time series, in this case lightning prediction data, and then use that completed dataset to create lightning prediction forecasts.
Design/methodology/approach
Using the technique of spatiotemporal kriging to estimate data that is autocorrelated but in space and time. Using the estimated data in an imputation methodology completes a dataset used in lightning prediction.
Findings
The techniques provided prove robust to the chaotic nature of the data, and the resulting time series displays evidence of smoothing while also preserving the signal of interest for lightning prediction.
Research limitations/implications
The research is limited to the data collected in support of weather prediction work through the 45th Weather Squadron of the United States Air Force.
Practical implications
These methods are important due to the increasing reliance on sensor systems. These systems often provide incomplete and chaotic data, which must be used despite collection limitations. This work establishes a viable data imputation methodology.
Social implications
Improved lightning prediction, as with any improved prediction methods for natural weather events, can save lives and resources due to timely, cautious behaviors as a result of the predictions.
Originality/value
Based on the authors’ knowledge, this is a novel application of these imputation methods and the forecasting methods.
Details
Keywords
Andrew Bradly and Marina Iskhakova
The purpose of this paper is to serve as a comprehensive review of short-term study abroad (STSA) outcomes to help guide future STSA and study abroad (SA) scholars and…
Abstract
Purpose
The purpose of this paper is to serve as a comprehensive review of short-term study abroad (STSA) outcomes to help guide future STSA and study abroad (SA) scholars and practitioners in the further development of the field.
Design/methodology/approach
This paper is the first comprehensive and systematic review of all outcomes of STSA programs within the SA body of research based on 156 papers.
Findings
The study provides the first comprehensive classification of all previously studied STSA outcomes (85) into six categories: cross-cultural outcomes, STSA pedagogy outcomes, personal and professional outcomes; language outcomes; teacher and faculty outcomes; and other outcomes. Distinct sub-categories are identified that provide insights on the current landscape of STSA and related research.
Research limitations/implications
This study makes a significant contribution to the theory and practice of SA, and among the key contributions are a systematic understanding of the scale and scope of STSA outcomes; insights on the most efficient design of future STSA programs; and an expanded understanding of the role and importance of STSA programs in international education. Furthermore, a comprehensive STSA outcomes map develops an extensive research agenda.
Social implications
While the COVID-19 pandemic currently limits the opportunities for STSA, given its previous popularity, the authors envisage a strong return in the coming years of this form of affordable and valuable global learning. STSA programs have become an important component of higher education and which require considerable resources from participants and educational institutions alike. Therefore, further research is needed to understand the impacts of STSA programs and to further improve program design. Such research will serve to better inform both academic understanding of the phenomenon and educational practice.
Originality/value
The study provides the first comprehensive classification of all studied STSA outcomes.
Details
Keywords
Silvia Balia and Erica Delugas
This chapter presents a mediation model that aims to disentangle the indirect from the direct effects of retirement on health, considering the mediating role of lifestyles. The…
Abstract
This chapter presents a mediation model that aims to disentangle the indirect from the direct effects of retirement on health, considering the mediating role of lifestyles. The model is applied to the risk of depression, and physical inactivity is assumed to potentially mediate the effect of retirement. The results indicate that there is a significant indirect effect via the mediator, albeit relatively small in comparison to the direct effect. The analysis highlights the importance of further exploring the influence of lifestyle factors in the relationship between retirement and health, in order to gain a better understanding of the potential pathways through which retirement impacts health.
Details
Keywords
Mudassar Ali, Li Zhang, Syed Jamal Shah, Salim Khan and Adnan Muhammad Shah
This paper aims to examine the impact of humble leadership on project success. The mediating effects of psychological empowerment and innovative work behavior on the relationship…
Abstract
Purpose
This paper aims to examine the impact of humble leadership on project success. The mediating effects of psychological empowerment and innovative work behavior on the relationship between humble leadership and project success are tested.
Design/methodology/approach
Data were collected from 337 individuals employed in the civil construction sector of Pakistan.
Findings
The results showed that humble leadership is positively related to project success. Furthermore, psychological empowerment and innovative work behavior partially mediate the relationship between humble leadership and project success.
Originality/value
Drawing on conservation of resource theory, this study found that how humble leadership is important for project success and thus extends the utility of the concept of humble leadership to the project literature.
Details
Keywords
Rodney Lambert, Woody Caan and Andrew McVicar
Current treatment guidelines for anxiety disorders, including panic disorder (PD), recommend either medication or cognitive behavioural therapy (CBT). There is currently a call…
Abstract
Current treatment guidelines for anxiety disorders, including panic disorder (PD), recommend either medication or cognitive behavioural therapy (CBT). There is currently a call through the Layard Report for significant investment to increase the availability of CBT resources. However, there are reported limitations to both medication and CBT in the treatment of anxiety, and it appears prudent to consider additional methods of treatment that may offer effective interventions. One such intervention is based around the evidence of altered sensitivity within a number of physiological body systems in anxiety patients (particularly those with PD), all of which are influenced in their function by habitual lifestyle behaviours. A randomised controlled trial compared a 16‐week occupational therapy‐led lifestyle intervention and routine general practice (GP) care for PD. At 20 weeks, 14 symptoms with ‘moderate’ to ‘very severe’ ratings were assessed in 36 GP and 31 lifestyle‐intervention patients. Composite symptom profiles, similar at baseline, were produced. The GP intervention produced modest improvements in most symptoms. The lifestyle intervention overall produced greater symptomatic relief (Wilcoxon signed ranks test, P= 0.008). The physiological and cognitive symptom profile also changed more with lifestyle intervention. Occupational therapists have developed their interventions based on their understanding of everyday occupation. Habitual lifestyle behaviours are characterised as being recurrent elements of everyday occupation and are, therefore, legitimate targets for occupational therapy interventions. They provide a vehicle through which to encourage patients to regain understanding and control of their own anxiety symptoms.