The purpose of this paper was to investigate the organizational behavior of employees (as express... more The purpose of this paper was to investigate the organizational behavior of employees (as expressed by organizational and occupational commitment) in physical education offices at Iranian Universities. The sample that was used included 82 employees from 20
Optical gas imaging through multispectral cameras is a promising technique for mitigation of meth... more Optical gas imaging through multispectral cameras is a promising technique for mitigation of methane emissions through localization and quantification of emissions sources. While more advanced cameras developed in recent years have led to lower uncertainties in measuring gas concentrations, a systematic analysis of the uncertainties associated with leak rate estimation have been overlooked. We present a systematic categorization of the involved uncertainties with a focus on a theoretical analysis of projection uncertainties that are inherent to this technique. The projection uncertainties are then quantified using Large Eddy Simulation experiments of a point source release into the atmosphere. Our results show that while projection uncertainties are typically about 5% of the emission rate, low acquisition times and observation of the gas plume at small distances from the emission source (<10 m) can amount to errors of about 20%. Further, we found that acquisition times on the ord...
Surgery remains the standard of care for most rectal cancer as it offers the best chance of cure.... more Surgery remains the standard of care for most rectal cancer as it offers the best chance of cure. However, for patients with early stage low rectal cancers there are several treatment options available using novel radiotherapy techniques. Good responders to novel radiotherapy can avoid surgery. Poor responders need salvage surgery. Patient selection is important and careful assessment after preoperative chemoradiotherapy can identify good responders, even with advanced rectal cancers. Restaging magnetic resonance imaging scans can identify good radiological responses, which need to be confirmed by clinical examination and endoscopy. A watch and wait policy can be adopted for good responders, with surgery avoided or deferred. A boost with contact radiotherapy or brachytherapy can be offered to elderly patients to improve local control. This treatment strategy needs to be evaluated via clinical trials, for which the contact x-ray and transanal endoscopic microsurgery trials have been ...
AimA ‘watch and wait’ (W&W) strategy after neoadjuvant long‐course chemoradiotherapy (NACRT) rema... more AimA ‘watch and wait’ (W&W) strategy after neoadjuvant long‐course chemoradiotherapy (NACRT) remains controversial. Whilst encouraging short‐term data exist, the strategy will be judged on long‐term data. We present long‐term, real‐world UK data from a single National Health Service trust.MethodsAn analysis was performed of a prospectively maintained W&W database over 9 years between 2010 and 2018. Outcome measures include incidence and time to regrowth and overall and disease‐free survival.ResultsWe diagnosed 563 rectal cancers in 9 years. In all, 283 patients underwent rectal resection (50.3%). NACRT was used in 155 patients for margin‐threatened tumours on staging MRI. Forty‐nine patients (31.6%) experienced either a ‘near complete’ or a complete clinical response (cCR) at their 10 weeks post‐NACRT assessment (MRI and endoscopy). The median age was 69 years (range 44–83), and the male to female ratio was 32:17. The median follow‐up was 38 months (range 12–96). The median tumour d...
This paper evaluates likelihood function forms for Bayesian inference of point-source gas emissio... more This paper evaluates likelihood function forms for Bayesian inference of point-source gas emissions using a mobile sensor. Whereas Bayesian inference has been successfully used to estimate emission rates from timeaveraged concentration data measured by stationary sensors, data collected by mobile sensors do not represent ensemble or time-averaged conditions. To examine the potential impact of this contrast, controlled release experiments were conducted with a mobile sensor measuring concentrations repeatedly along transverse cross sections of the downwind plumes. Experiments were conducted with measurements made at different downwind distances, different sensor heights, and with different obstacle states. An examination is made between two commonly-used likelihood functions, the Gaussian and the log-normal. For experiments conducted in the absence of obstacles, the Bayesian estimates using the log-normal likelihood function yield a much smaller bias than those based on the Gaussian likelihood function. This finding is consistent with the non-Gaussian nature of concentration fluctuations near a point-source. For experiments conducted in the presence of obstacles, the Bayesian inference based on the Gaussian likelihood function exhibits a better performance. This can be explained by the enhanced turbulent mixing due to the obstacle-introduced wake eddies. Overall, we find that the selection of the likelihood function can be physically related to the underlying conditions, and the proper selection is critical to ensure the performance of the Bayesian inference for source characterization using mobile sensing data.
This article aims at developing an efficient measurement scale for corporate social responsibilit... more This article aims at developing an efficient measurement scale for corporate social responsibility in the tourism industry, given the contextual character that is recognized in the practice of this construct. Indicators were generated on the basis of a literature review and qualitative research. To assess the reliability and validity, first and second-order confirmatory factor analysis were carried out. Results show a multidimensional structure of this construct, including economic, social and environmental issues. This study contributes to the advancement of knowledge in the field of social responsibility through its practical application regarding concepts of sustainable development which have mainly been theoretical.
International Journal of Sport Management, Recreation & Tourism, 2014
The purpose of this paper was to investigate the organizational behavior of employees (as express... more The purpose of this paper was to investigate the organizational behavior of employees (as expressed by organizational and occupational commitment) in physical education offices at Iranian Universities. The sample that was used included 82 employees from 20 Universities in 5 geographic regions of Iran. The research Instruments were the "Organizational and Occupational Commitment Questionnaires" (Allen & Meyer, 1997) comprised 18 items (3 subscales of Affective, Normative and Continuance).The reliability of Organizational Commitment Questionnaire and Occupational Commitment Questionnaire were α = .83 and .82 respectively. The result showed that the average of organizational commitment and occupational commitment was 3.59±.519 and 3.64±.513 respectively. Also, there was a significant and positive correlation between organizational and occupational commitment (r=0.72, p=.001).There was a significant difference in occupational commitment with regard to level of education (F (3, 77) =3.343, p=.023), But there was no significant difference in organizational commitment and occupational commitment with regard to gender, years of service and employment status. Because of the existence of a positive and meaningful relationship between organizational commitment and occupational commitment, it was advised to the managers of physical education offices to attend seriously to their organizational commitment and its subscales for fast achievement to the organization's aims. Attending to the organizational and occupational commitment of employees will increase the proficiency and effectively of them.
The purpose of this paper was to investigate the organizational behavior of employees (as express... more The purpose of this paper was to investigate the organizational behavior of employees (as expressed by organizational and occupational commitment) in physical education offices at Iranian Universities. The sample that was used included 82 employees from 20
Optical gas imaging through multispectral cameras is a promising technique for mitigation of meth... more Optical gas imaging through multispectral cameras is a promising technique for mitigation of methane emissions through localization and quantification of emissions sources. While more advanced cameras developed in recent years have led to lower uncertainties in measuring gas concentrations, a systematic analysis of the uncertainties associated with leak rate estimation have been overlooked. We present a systematic categorization of the involved uncertainties with a focus on a theoretical analysis of projection uncertainties that are inherent to this technique. The projection uncertainties are then quantified using Large Eddy Simulation experiments of a point source release into the atmosphere. Our results show that while projection uncertainties are typically about 5% of the emission rate, low acquisition times and observation of the gas plume at small distances from the emission source (<10 m) can amount to errors of about 20%. Further, we found that acquisition times on the ord...
Surgery remains the standard of care for most rectal cancer as it offers the best chance of cure.... more Surgery remains the standard of care for most rectal cancer as it offers the best chance of cure. However, for patients with early stage low rectal cancers there are several treatment options available using novel radiotherapy techniques. Good responders to novel radiotherapy can avoid surgery. Poor responders need salvage surgery. Patient selection is important and careful assessment after preoperative chemoradiotherapy can identify good responders, even with advanced rectal cancers. Restaging magnetic resonance imaging scans can identify good radiological responses, which need to be confirmed by clinical examination and endoscopy. A watch and wait policy can be adopted for good responders, with surgery avoided or deferred. A boost with contact radiotherapy or brachytherapy can be offered to elderly patients to improve local control. This treatment strategy needs to be evaluated via clinical trials, for which the contact x-ray and transanal endoscopic microsurgery trials have been ...
AimA ‘watch and wait’ (W&W) strategy after neoadjuvant long‐course chemoradiotherapy (NACRT) rema... more AimA ‘watch and wait’ (W&W) strategy after neoadjuvant long‐course chemoradiotherapy (NACRT) remains controversial. Whilst encouraging short‐term data exist, the strategy will be judged on long‐term data. We present long‐term, real‐world UK data from a single National Health Service trust.MethodsAn analysis was performed of a prospectively maintained W&W database over 9 years between 2010 and 2018. Outcome measures include incidence and time to regrowth and overall and disease‐free survival.ResultsWe diagnosed 563 rectal cancers in 9 years. In all, 283 patients underwent rectal resection (50.3%). NACRT was used in 155 patients for margin‐threatened tumours on staging MRI. Forty‐nine patients (31.6%) experienced either a ‘near complete’ or a complete clinical response (cCR) at their 10 weeks post‐NACRT assessment (MRI and endoscopy). The median age was 69 years (range 44–83), and the male to female ratio was 32:17. The median follow‐up was 38 months (range 12–96). The median tumour d...
This paper evaluates likelihood function forms for Bayesian inference of point-source gas emissio... more This paper evaluates likelihood function forms for Bayesian inference of point-source gas emissions using a mobile sensor. Whereas Bayesian inference has been successfully used to estimate emission rates from timeaveraged concentration data measured by stationary sensors, data collected by mobile sensors do not represent ensemble or time-averaged conditions. To examine the potential impact of this contrast, controlled release experiments were conducted with a mobile sensor measuring concentrations repeatedly along transverse cross sections of the downwind plumes. Experiments were conducted with measurements made at different downwind distances, different sensor heights, and with different obstacle states. An examination is made between two commonly-used likelihood functions, the Gaussian and the log-normal. For experiments conducted in the absence of obstacles, the Bayesian estimates using the log-normal likelihood function yield a much smaller bias than those based on the Gaussian likelihood function. This finding is consistent with the non-Gaussian nature of concentration fluctuations near a point-source. For experiments conducted in the presence of obstacles, the Bayesian inference based on the Gaussian likelihood function exhibits a better performance. This can be explained by the enhanced turbulent mixing due to the obstacle-introduced wake eddies. Overall, we find that the selection of the likelihood function can be physically related to the underlying conditions, and the proper selection is critical to ensure the performance of the Bayesian inference for source characterization using mobile sensing data.
This article aims at developing an efficient measurement scale for corporate social responsibilit... more This article aims at developing an efficient measurement scale for corporate social responsibility in the tourism industry, given the contextual character that is recognized in the practice of this construct. Indicators were generated on the basis of a literature review and qualitative research. To assess the reliability and validity, first and second-order confirmatory factor analysis were carried out. Results show a multidimensional structure of this construct, including economic, social and environmental issues. This study contributes to the advancement of knowledge in the field of social responsibility through its practical application regarding concepts of sustainable development which have mainly been theoretical.
International Journal of Sport Management, Recreation & Tourism, 2014
The purpose of this paper was to investigate the organizational behavior of employees (as express... more The purpose of this paper was to investigate the organizational behavior of employees (as expressed by organizational and occupational commitment) in physical education offices at Iranian Universities. The sample that was used included 82 employees from 20 Universities in 5 geographic regions of Iran. The research Instruments were the "Organizational and Occupational Commitment Questionnaires" (Allen & Meyer, 1997) comprised 18 items (3 subscales of Affective, Normative and Continuance).The reliability of Organizational Commitment Questionnaire and Occupational Commitment Questionnaire were α = .83 and .82 respectively. The result showed that the average of organizational commitment and occupational commitment was 3.59±.519 and 3.64±.513 respectively. Also, there was a significant and positive correlation between organizational and occupational commitment (r=0.72, p=.001).There was a significant difference in occupational commitment with regard to level of education (F (3, 77) =3.343, p=.023), But there was no significant difference in organizational commitment and occupational commitment with regard to gender, years of service and employment status. Because of the existence of a positive and meaningful relationship between organizational commitment and occupational commitment, it was advised to the managers of physical education offices to attend seriously to their organizational commitment and its subscales for fast achievement to the organization's aims. Attending to the organizational and occupational commitment of employees will increase the proficiency and effectively of them.
Uploads
Papers by Amir Montazeri