554 research outputs found
Improving Basic Schools through Continuous Professional Development: The Case of Amia-Ba Circuit of Ajumako Enyan Essiam District
The study employed the explanatory sequential design. The purposive and simple random sampling techniques were used to sample 10 head teachers and 70 teachers from 10 public basic schools in the Circuit. Questionnaires and semi-structured interview guide were used to collect data from the respondents. The study established that the head teachers and teachers understand continuous professional development as training organised by the school and the Ministry of Education and other opportunities used by teachers and head teachers to improve their professional competence. CPD helps improve teachers’ knowledge in the subject area and teaching strategies and enhances teachers’ understanding of their students thinking and learning patterns and influence head teachers and teachers administrative and classroom practices. Well planned and executed workshops, seminars, and other short courses will offer structured opportunities for the head teachers and teachers to acquire knowledge and skills. Keywords: professional development, school improvement, head teacher, teacher, Ajumako Enyan-Essiam Distric
Final evaluation results: Expanding access to secondary school education for teenage mothers in Homa Bay County
Radial Transport in the Earth’s Radiation Belts: Linear, Quasi-linear, and Higher-order Processes
Observational studies of the Earth’s radiation belts indicate that Alfvénic fluctuations in the frequency range of 2–25 mHz accelerate electrons to relativistic energies. For decades, statistical models of radiation belts have quantified the impact of Alfvénic waves in terms of quasi-linear diffusion. However, quasi-linear models are inadequate to quantify Alfvénic radial transport occurring on timescales comparable to the azimuthal drift period of 0.1–10 MeV electrons. With recent advances in observational methodologies offering coverage of the Earth’s radiation belts on fast timescales, a theoretical framework that distinguishes between fast and diffusive radial transport can be tested for the first time in situ. In this report, we present a drift-kinetic description of radial transport for planetary radiation belts. We characterize fast linear processes and determine the conditions under which higher-order effects become dynamically significant. In the linear regime, wave–particle interactions are categorized in terms of resonant and nonresonant responses. We demonstrate that the phenomenon of zebra stripes is nonresonant and can originate from injection events in the inner radiation belts. We derive a radial diffusion coefficient for a field model that satisfies Faraday’s law and that contains two terms: one scaling as L ^10 independent of the azimuthal number m , and a second scaling as m ^2 L ^6 . In the higher-order regime, azimuthally symmetric waves with properties consistent with in situ measurements can energize 10–100 keV electrons in less than a drift period. This process provides new evidence that acceleration by Alfvénic waves in radiation belts cannot be fully contained within diffusive models
Adolescent sexual and reproductive health situation: Insights from the 2014 Kenya Demographic and Health Survey
The 2015 Kenya National Adolescent Sexual and Reproductive Health Policy recognized the importance of addressing adolescent sexual and reproductive health (SRH) needs for achieving the country’s development goals. Although estimates from the 2014 Kenya Demographic and Health Survey (DHS) show the country registered improvements in key reproductive, maternal, and child health outcomes, adolescent outcomes likely remain poor given the challenges associated with adequately addressing their sexual and reproductive health needs. This report presents findings of further analysis of the 2014 Kenya DHS on key SRH outcomes among adolescent girls and boys 15 to 19 years old in Kenya. Understanding the SRH outcomes of adolescents is important for identifying areas or subgroups that need attention, and for the design of appropriate interventions
Prevalence and risk factors for brucellosis in prolonged fever patients in post-conflict Northern Uganda
Background: Brucellosis is a disease with significant public and economic implications but strategies for controlling this disease remain problematic.Objectives: This study sought to determine the sero-prevalence of brucellosis in prolonged fever patients and to identify modifiable risk factors for the infection in humans in post conflict Northern Uganda.Methods: The study employed a cross-sectional method among prolonged fever patients who had visited selected health facilities in the study districts in Northern Uganda. Sero-prevalence of brucellosis was calculated for i-ELISA IgG/IgM. A structured questionnaire was used to obtain data on possible risk factors for brucellosis. Associations between sero-prevalence and risk factors were measured using the Odds Ratio.Results: Brucellosis was confirmed in 18.7% of the 251 patients that tested positive for the disease, with the rapid Brucella Plate Agglutination Test, and ages 10-84 years (median age 47+0.86). Sex (p = 0.001; OR 3.79; 95% CI 1.75 - 8.24), rearing livestock (p < 0.005; OR 8.44; 95% CI 2.84-25.03) and consumption of unpasteurised milk (p = 0.023; OR 2.57; 95% CI 1.14-5.80) were factors associated with brucellosis.Conclusion: Control of brucellosis in animals, training and sensitisation of the community on brucellosis is needed to stimulate action on human brucellosis control.Keywords: Brucellosis, human, fever, prevalence, Uganda, zoonosis
Using mutual information to investigate non-linear correlation between AE index, ULF Pc5 wave activity and electron precipitation
In this study, we use mutual information from information theory to investigate non-linear correlation between geomagnetic activity indicated by auroral electrojet (AE) index with both the global ultra low frequency (ULF) Pc5 wave power and medium energy (>= 30 keV) electron precipitation at the central outer radiation belt. To investigate the energy and magnetic local time (MLT) dependence of the non-linearity, we calculate the mutual information and Pearson correlation coefficient separately for three different energy ranges (30-100 keV, 100-300 keV and >= 300 keV) and four different MLT sectors (0-6, 6-12, 12-18, 18-24). We compare results from 2 years 2004 and 2007 representing geomagnetically more active and less active years, respectively. The correlation analysis between the AE index and electron precipitation shows a clear MLT and energy dependence in both active and quiet conditions. In the two lowest energy ranges of the medium energy electrons (30-100 keV and 100-300 keV) both non-linear correlation and Pearson correlation indicate strong dependence with the AE index in the dawn sector. The linear dependence indicated by the Pearson correlation coefficient decreases from dawn to dusk while the change in the non-linear correlation is smaller indicating an increase in the non-linearity from dawn to dusk. The non-linearity between the AE index and electron precipitation is larger at all MLT sectors except MLTs 6-12 during geomagnetically more active year when larger amount of the activity is driven by interplanetary coronal mass ejections (ICMEs) compared to lower activity year with high speed stream (HSS) and stream interaction region (SIR) driven activity. These results indicate that the processes leading to electron precipitation become more non-linear in the dusk and during geomagnetically more active times when the activity is driven by ICMEs. The non-linearity between the AE index and global ULF Pc5 activity is relatively low and seems not to be affected by the difference in the geomagnetic activity during the 2 years studied.Peer reviewe
Phase space density analysis of outer radiation belt electron energization and loss during geoeffective and nongeoeffective sheath regions
Coronal mass ejection driven sheath regions are one of the key drivers of drastic outer radiation belt responses. The response can however be significantly different based on the sheath properties and the associated inner magnetospheric wave activity. We performed two case studies on the effects of sheaths on outer belt electrons of various energies using data from the Van Allen Probes. One sheath caused a major geomagnetic disturbance and the other had only a minor impact. We especially investigated the phase space density (PSD) of seed, core, and ultrarelativistic electrons to determine the dominant energization and loss processes taking place during the events. Both sheaths produced substantial variation in the electron fluxes from tens of kiloelectronvolts up to ultrarelativistic energies. The responses were however the opposite: the geoeffective sheath mainly led to enhancement, while the nongeoeffective one caused a depletion throughout most of the outer belt. The case studies highlight that both inward and outward radial transport driven by ultra-low frequency waves played an important role in both electron energization and loss. Additionally, PSD radial profiles revealed a local peak that indicated significant acceleration to core energies by chorus waves during the geoeffective event. The distinct responses and different mechanisms in action during these events were related to the timing of the peaked solar wind dynamic pressure causing magnetopause compression, and the differing levels of substorm activity. The most remarkable changes in the radiation belt system occurred in key sheath sub-regions near the shock and the ejecta leading edge.Peer reviewe
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