Total Cross Sections at current/Future Colliders, conventional models and QCD

Rise in total cross sections for elastic scattering generated immense interest both for experimental measurements and theoretical investigations. How will total cross section behave at LHC and Cosmic Ray energies is therefore in the limelight of our future measurements. Theoretical studies become even more interesting when we take into consideration the ratio of real and imaginary parts of the scattering amplitudes. We will briefly undertake the current results and future prospects in the light of conventional as well as QCD-based phenomenology

The role perceptions of DEOs in Pakistan : Toothless tigers or selfless servants?

The study of educational leadership and management in Pakistan is relatively a new territory – a road less travelled. This is truer when it comes to the study of District Education Officials’ (DEOs) ways of managing education. These officials actually bridge the government higher functionaries and policies in terms of policy implementation, monitoring and supervision of the schools in their respective districts. These officials theoretically should exercise significant control over the functioning of schools in their jurisdiction. Though on paper they have heavy responsibilities but actually they have limited arena to exercise; their power due largely to complex web of power centres in their respective provinces. A small-scale exploratory case study was undertaken in qualitative research paradigm to investigate the perceptions and practices of the district educational officials in Pakistan. The sample of the study was drawn from the eleven districts of Baluchistan, eleven districts of Sindh, and ten officials from Islamabad Capital Territory (ICT) who were selected for their professional development at AKU-IED under an USAID/ED-LINKS Project during 2008-2010. The study investigated these DEOs’ self-perceived roles and responsibilities through mainly interviews. Some head teachers were also interviewed to see how they view the roles and responsibilities of these senior officials. As well, the headteachers, who were also participating in the same course, were asked to comment about the DEOs’ role and what that means to their schools. Moreover, the DEOs were also asked to comment on their learnings during their certificate course programme. The findings of the study reveal that DEOs perceive their roles as more administrative, at best management and hardly leadership. Reportedly, they do this work very often in trying circumstances, pressurized by political influences, local traditions, tribal dynamics, and uncertain law and order situations. They feel almost besieged with debilitating rather than enabling circumstances. Despite these limitations, they try their best to do at least the minimum they are required; but find it difficult to go beyond. Self-efficacy in this case is in short supply; though some do claim that they are able to accomplish what they can; in the given circumstances. Though good intentions are in abundance but materializing them is a herculean task for them. They appear to be the toothless tigers; as they appear to be senior government officials but their actual influence on their area of operation appears too little; they cannot account even their humblest employees due to many reasons, including political interference

Depression and anxiety predict health-related quality of life in chronic obstructive pulmonary disease: systematic review and meta-analysis

Background: The causal association between depression, anxiety, and health-related quality of life (HRQoL) in chronic obstructive pulmonary disease (COPD) is unclear. We therefore conducted a systematic review of prospective cohort studies that measured depression, anxiety, and HRQoL in COPD. Methods: Electronic databases (Medline, Embase, Cumulative Index to Nursing and Allied Health Literature [CINAHL], British Nursing Index and Archive, PsycINFO and Cochrane database) were searched from inception to June 18, 2013. Studies were eligible for inclusion if they: used a nonexperimental prospective cohort design; included patients with a diagnosis of COPD confirmed by spirometry; and used validated measures of depression, anxiety, and HRQoL. Data were extracted and pooled using random effects models. Results: Six studies were included in the systematic review; of these, three were included in the meta-analysis for depression and two were included for the meta-analysis for anxiety. Depression was significantly correlated with HRQoL at 1-year follow-up (pooled r=0.48, 95% confidence interval 0.37–0.57, P<0.001). Anxiety was also significantly correlated with HRQoL at 1-year follow-up (pooled r=0.36, 95% confidence interval 0.23–0.48, P<0.001). Conclusion: Anxiety and depression predict HRQoL in COPD. However, this longitudinal analysis does not show cause and effect relationships between depression and anxiety and future HRQoL. Future studies should identify psychological predictors of poor HRQoL in well designed prospective cohorts with a view to isolating the mediating role played by anxiety disorder and depressio

Depression and anxiety predict health-related quality of life in chronic obstructive pulmonary disease: systematic review and meta-analysis.

Published onlineJournal ArticleMeta-AnalysisResearch Support, Non-U.S. Gov'tReviewBACKGROUND: The causal association between depression, anxiety, and health-related quality of life (HRQoL) in chronic obstructive pulmonary disease (COPD) is unclear. We therefore conducted a systematic review of prospective cohort studies that measured depression, anxiety, and HRQoL in COPD. METHODS: Electronic databases (Medline, Embase, Cumulative Index to Nursing and Allied Health Literature [CINAHL], British Nursing Index and Archive, PsycINFO and Cochrane database) were searched from inception to June 18, 2013. Studies were eligible for inclusion if they: used a nonexperimental prospective cohort design; included patients with a diagnosis of COPD confirmed by spirometry; and used validated measures of depression, anxiety, and HRQoL. Data were extracted and pooled using random effects models. RESULTS: Six studies were included in the systematic review; of these, three were included in the meta-analysis for depression and two were included for the meta-analysis for anxiety. Depression was significantly correlated with HRQoL at 1-year follow-up (pooled r=0.48, 95% confidence interval 0.37-0.57, P<0.001). Anxiety was also significantly correlated with HRQoL at 1-year follow-up (pooled r=0.36, 95% confidence interval 0.23-0.48, P<0.001). CONCLUSION: Anxiety and depression predict HRQoL in COPD. However, this longitudinal analysis does not show cause and effect relationships between depression and anxiety and future HRQoL. Future studies should identify psychological predictors of poor HRQoL in well designed prospective cohorts with a view to isolating the mediating role played by anxiety disorder and depression.NIHRUniversity of ManchesterCLAHR

Multi-objective optimisation for minimum quantity lubrication assisted milling process based on hybrid response surface methodology and multi-objective genetic algorithm

© 2019 by SAGE Publications Ltd.Parametric modelling and optimisation play an important role in choosing the best or optimal cutting conditions and parameters during machining to achieve the desirable results. However, analysis of optimisation of minimum quantity lubrication–assisted milling process has not been addressed in detail. Minimum quantity lubrication method is very effective for cost reduction and promotes green machining. Hence, this article focuses on minimum quantity lubrication–assisted milling machining parameters on AISI 1045 material surface roughness and power consumption. A novel low-cost power measurement system is developed to measure the power consumption. A predictive mathematical model is developed for surface roughness and power consumption. The effects of minimum quantity lubrication and machining parameters are examined to determine the optimum conditions with minimum surface roughness and minimum power consumption. Empirical models are developed to predict surface roughness and power of machine tool effectively and accurately using response surface methodology and multi-objective optimisation genetic algorithm. Comparison of results obtained from response surface methodology and multi-objective optimisation genetic algorithm depict that both measured and predicted values have a close agreement. This model could be helpful to select the best combination of end-milling machining parameters to save power consumption and time, consequently, increasing both productivity and profitability.Peer reviewedFinal Published versio

Reconceptualization of teacher education experiences from the context of a multicultural developing country

Teacher education in developing countries faces great challenges attributable to economic constraints, including shrinking resources, the low status of teachers—exacerbated by declining incentives—and an entirely theoretical approach in teacher training programs. These challenges are further intensified by variations in the trainees’ cultural, regional, and religious backgrounds and by the lack of collaboration between different education sectors. In this context, the Aga Khan University Institute for Educational Development (AKU-IED) in Karachi, Pakistan, is attempting to provide contextually appropriate, effective teacher education programs for Pakistan and other developing countries. This article draws on the authors’ personal experiences in the teacher education programs at AKU-IED and on studies that examine the impact of these programs on participants. Several studies show that teacher education transforms teachers’ beliefs and practices if accomplished through more effective approaches. The article discusses how teacher education programs are conceptualized and implemented in the multicultural context of AKU-IED, where the course participants come from various developing countries and diverse backgrounds

Reconceptualization of teacher education: Experiences from the context of a multicultural developing country

Teacher education in developing countries faces great challenges attributable to economic constraints, including shrinking resources, the low status of teachers—exacerbated by declining incentives—and an entirely theoretical approach in teacher training programs. These challenges are further intensified by variations in the trainees’ cultural, regional, and religious backgrounds and by the lack of collaboration between different education sectors. In this context, the Aga Khan University Institute for Educational Development (AKU-IED) in Karachi, Pakistan, is attempting to provide contextually appropriate, effective teacher education programs for Pakistan and other developing countries. This article draws on the authors’ personal experiences in the teacher education programs at AKU-IED and on studies that examine the impact of these programs on participants. Several studies show that teacher education transforms teachers’ beliefs and practices if accomplished through more effective approaches. The article discusses how teacher education programs are conceptualized and implemented in the multicultural context of AKU-IED, where the course participants come from various developing countries and diverse backgrounds

Coulomb interactions within Halo Effective Field Theory

I present preliminary results of effective field theory applied to nuclear cluster systems, where Coulomb interactions play a significant role.Comment: Talk given at the 20th European Conference on Few-Body Problems in Physics, Pisa, Italy, September 10-14, 200