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PGC-Arctan demodulation method based on improved IKEF
No full textThe proposed method is an improvement on the traditional PGC demodulation technique, specifically addressing the impact of carrier phase delay, modulation depth drift, and low-frequency ambient noise on phase demodulation accuracy in phase-modulated homodyne interferometers. It utilises an improved iterative extended Kalman filtering (IEKF) approach. The algorithm enhances the iterative updating process by incorporating a damping factor into the traditional IEKF. This enables optimal estimation and correction of the parameters of the PGC quadrature signals, resulting in reduced nonlinear error in the demodulation process. Additionally, the improved algorithm achieves higher demodulation accuracy. Simulation results demonstrate the method's effectiveness in eliminating nonlinear error in phase generation carrier
Digital financial inclusion in emerging economies: evidence from Jordan
Get PDFThis study explores the role of digital financial inclusion in mitigating poverty and bolstering economic growth, with a special focus on developing nations during the COVID-19 era. Centering on Jordan, it seeks to identify key influencers of financial access by analyzing data from 260 participants using a non-linear probit regression model. The research uncovers a significant disparity in financial inclusion between Jordanian adult males and females, attributable to differences in education, wealth, employment, and income levels. These findings point to the necessity of prioritizing financial accessibility for marginalized groups such as women, the elderly, and those with lower income to effectively combat poverty and facilitate economic advancement and sustainable development in emerging markets
Leading modes and feature zones of sea ice concentration in North Pacific during Spring seasons of 2000–2020
Get PDFUnder the influence of the Arctic amplification, sea ice variability in North Pacific is becoming a key indicator of global climate changes. Due to the widespread and complex impacts of North Pacific sea ice variations, the understanding of its dynamic changes, especially its spatial and temporal evolution patterns, has great significance. In this study, we used the rotated empirical orthogonal decomposition to divide the whole North Pacific into six feature zones on the evolution sea ice concentration under the recent global warming and highlighted the complexity and diversity of sea ice variations in the offshore waters
A question of age? applying desistance with children
Get PDFYouth justice in England and Wales has seen the increasing adoption of desistance thinking in recent years. There has been scarce academic debate of this development, despite the desistance evidence base focussing on adult pathways away from crime. This article examines the theorisation and application of desistance thinking with children, centring on the experiences and narratives of four ‘groups’ involved in the formal youth justice system in England and Wales, across two empirical studies. It challenges previous scholarship that denies the relevance of desistance theories to under-18s, arguing for progressive desistance practice that prioritises children’s healthy long-term development
High resolution temperature evolution maps of Bangladesh via data-driven learning
Get PDFAs a developing country with an agricultural economy as a pillar, Bangladesh is highly vulnerable to adverse effects of climate change, so the generation of high-resolution temperature maps is of great value for Bangladesh to achieve agricultural sustainable development. However, Bangladesh’s weak economy and sparse meteorological stations make it difficult to obtain such maps. In this study, by mining internal features and links inside observed data, we developed an efficient data-driven downscaling technique to generate high spatial-resolution temperature distribution maps of Bangladesh directly from observed temperature data at 34 meteorological stations with irregular distribution. Based on these high-resolution historical temperature maps, we further explored a data-driven forecast technique to generate high-resolution temperature maps of Bangladesh for the period 2025–2035. Since the proposed techniques are very low-cost and fully mine internal links inside irregular-distributed observations, they can support relevant departments of Bangladesh to formulate policies to mitigate and adapt to climate change in a timely manner
Influence of environmental factors and genome diversity on cumulative COVID-19 cases in the highland region of China: comparative correlational study
Get PDFBackground: The novel coronavirus SARS-CoV-2 caused the global COVID-19 pandemic. Emerging reports support lower mortality and reduced case numbers in highland areas; however, comparative studies on the cumulative impact of environmental factors and viral genetic diversity on COVID-19 infection rates have not been performed to date. Objective: The aims of this study were to determine the difference in COVID-19 infection rates between high and low altitudes, and to explore whether the difference in the pandemic trend in the high-altitude region of China compared to that of the lowlands is influenced by environmental factors, population density, and biological mechanisms. Methods: We examined the correlation between population density and COVID-19 cases through linear regression. A zero-shot model was applied to identify possible factors correlated to COVID-19 infection. We further analyzed the correlation of meteorological and air quality factors with infection cases using the Spearman correlation coefficient. Mixed-effects multiple linear regression was applied to evaluate the associations between selected factors and COVID-19 cases adjusting for covariates. Lastly, the relationship between environmental factors and mutation frequency was evaluated using the same correlation techniques mentioned above. Results: Among the 24,826 confirmed COVID-19 cases reported from 40 cities in China from January 23, 2020, to July 7, 2022, 98.4% (n=24,430) were found in the lowlands. Population density was positively correlated with COVID-19 cases in all regions (ρ=0.641, P=.003). In high-altitude areas, the number of COVID-19 cases was negatively associated with temperature, sunlight hours, and UV index (P=.003, P=.001, and P=.009, respectively) and was positively associated with wind speed (ρ=0.388, P<.001), whereas no correlation was found between meteorological factors and COVID-19 cases in the lowlands. After controlling for covariates, the mixed-effects model also showed positive associations of fine particulate matter (PM2.5) and carbon monoxide (CO) with COVID-19 cases (P=.002 and P<.001, respectively). Sequence variant analysis showed lower genetic diversity among nucleotides for each SARS-CoV-2 genome (P<.001) and three open reading frames (P<.001) in high altitudes compared to 300 sequences analyzed from low altitudes. Moreover, the frequencies of 44 nonsynonymous mutations and 32 synonymous mutations were significantly different between the high- and low-altitude groups (P<.001, mutation frequency>0.1). Key nonsynonymous mutations showed positive correlations with altitude, wind speed, and air pressure and showed negative correlations with temperature, UV index, and sunlight hours. Conclusions: By comparison with the lowlands, the number of confirmed COVID-19 cases was substantially lower in high-altitude regions of China, and the population density, temperature, sunlight hours, UV index, wind speed, PM2.5, and CO influenced the cumulative pandemic trend in the highlands. The identified influence of environmental factors on SARS-CoV-2 sequence variants adds knowledge of the impact of altitude on COVID-19 infection, offering novel suggestions for preventive intervention
Barrier analysis to improve big data analytics capability of the maritime industry: a mixed-method approach
Get PDFThe maritime industry is facing increasing challenges due to decarbonization requirements, trade disruptions, and geoeconomic fragmentation, such as International Maritime Organization (IMO) sets out clear framework to reach net zero emissions by 2050, Russia-Ukraine war disrupted maritime activities in the Black and Azov seas, and increased trade tensions between the United States and China. To enhance their sustainability, operational efficiency, and competitiveness, maritime organizations are therefore very keen to build big data analytics capability (BDAC). However, various barriers, mean that only a handful are able to do so. We adopt a mixed-method approach to analyze these barriers. Thematic analysis is used to identify five categories of barriers and 16 individual barriers based on empirical data collected from 26 maritime organizations. These are then prioritized using the analytic hierarchy process (AHP), followed by total interpretive structural modelling (TISM) to understand their interrelationships. Finally, cross-impact matrix multiplications applied to classification (MICMAC) is employed to differentiate the role of each barrier based on its driving and dependence power. This paper makes several theoretical contributions. First, China's hierarchical cultural value orientation encourages competition and obedience to rules, resulting in unwillingness to share knowledge, lack of coordination, and lack of error correction mechanisms. These cultural barriers hinder BDAC development. Second, organizational learning category barriers are found to be the most important in impeding BDAC development. This study also raises practitioners' awareness of the need to tackle cultural and organizational learning barriers
Roots and wings:enabling a sense of identity, social inclusion and opportunities for growth in the Early Years curriculum
No full textThis chapter, written in the first person, will raise the question ‘What could and should an effective and inclusive Early Years curriculum look like if it is to be responsive to the needs and interests of young children?’ The author will draw from her own experience of working in the sector as a teacher and academic for many years – what she learnt about young children, their needs, interests and learning patterns along the way and how to create effective, responsive inclusive and engaging Early Years curricula that will give young children a really good start to their education. She will illustrate her narrative with short vignettes to exemplify important issues that arose for her and provided turning points in her own understanding of young children and their development
Navigating credibility and approachability in conflict zones:insights from fieldwork in Nigerian communities facing ecoviolence
Get PDFThis article contributes to the literature by proposing an expanded “framework for credibility and approachability,” extending the framework’s applicability in conflict-affected societies. The credibility and approachability framework aids researchers in comprehending and evaluating their fieldwork experiences, enabling them to articulate their experiences clearly and insightfully. Drawing on the reflexive experiences of a diaspora-based researcher who used this framework to prepare for fieldwork in Nigeria, the article illustrates the framework’s components plus the added “bearability” component. The experiences were borne out of a study with 54 participants across focus groups in communities affected by eco-violence in the Nigerian Middle Belt. The researcher’s positionality of “betweenness” is also discussed, highlighting the complexities of conducting research as an academic “homecomer” in communities located in conflict-affected areas
The necropolitics of drone bases and use in the African context
Get PDFThis paper critically evaluates the establishment of drone bases and the use of drones in several African countries and territories. Despite the significant financial commitments needed, external forces continue to invest heavily in drone bases and operations across the continent, often promoted for the security of the countries in Africa. Using secondary sources, this paper employs the concept of “necropolitics” to argue that these drone bases, along with the technologies emanating from them – ostensibly for counter-insurgencies or counter-piracy – represent the deployment of “aerial technologies of domination”. It posits that such technologies enable external forces to control the airspaces of several African countries and determine who lives and dies, thereby ensuring their acquiescence and subjugation under aerial colonialism. This paper challenges the prevailing discourse that drone operations primarily serve the interests of those under its surveillance and advocates for the establishment of pan-African security partnerships to guide against aerial colonialism across the countries of Africa
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