Your search

<p>Approximately 90% of all magmatism on Earth can be explained through plate tectonics; the remainder is associated with intraplate volcanism. In large part, this intraplate volcanism can be attributed to mantle plumes, yet this does not represent all known examples. A number of hypotheses have been proposed to explain non-plume related intraplate volcanism. One geodynamically viable theory through the process of small-scale convection associated with lithospheric...

<p>The societal relevance of droughts in Africa underscores the need for improved understanding of the atmospheric processes that drive them. This study examined drought characteristics across Malawi, and the associated atmospheric circulation patterns, in observations, reanalysis and global climate models. Droughts were identified using the Standardised Precipitation and Evapotranspiration Index (SPEI) for the period 1965 to 2018. Atmospheric circulation patterns during...

<p>Burundi is one of the poorest countries in the world with about 65% of the population living below the poverty line and suffering from alarming food insecurity. Its population is highly dependent on rain-fed agriculture, which makes them extremely sensitive to climate variability and extremes for their subsistence. During the last decades, heavy rains, floods, and landslides suffered by Burundi’s population have led to severe famines, death, conflicts, and...

<p>Humanitarian crises often result from a combination of multiple physical and societal processes, rather than independently from a single driver. The combination of processes leads to “compound events”, whose socio-economic impacts could be larger than those expected by analysing each driver individually. In recent years, the Horn of Africa has been increasingly exposed to compound events. Frequent extreme wet and dry conditions often compound with...

<p>The Cape Verde islands are located about 800 km west of Senegal, at 14°-17° latitude and 21°-25° longitude. The archipelago consists of a volcanic chain of 10 major islands and eight minor islands The only currently active volcano in the Cape Verde archipelago is Pico do Fogo, which is located on the island of Fogo. Rising to 2829 m a.s.l., it is the most active volcano of the Cabo Verde Island. We report the results of the...

<p>Natural hazards have significant impact on society (people, assets, services, livelihoods and economic growth). Over the past decades, natural hazard disaster risks have increased globally. Due to high population densities, frequently on the rise and combined with high societal vulnerability, natural hazard disasters disproportionately hit regions of the Global south. In addition, these regions are environments where natural hazard and disaster risks are under-researched,...

Purpose: The purpose was to assess the socialization communication role of teachers and prevention of teenage pregnancies in public secondary schools in Narok County, Kenya.
 Methodology: A mixed research design was used in the study. The population of the study included all the 8994 female students of Narok County from 52 secondary schools in the Narok County in the year 2019. The respondents were aged between 13-19 years attending both boarding and day public secondary schools in...

ABSTRACT Rift Valley fever (RVF) has been linked with recurrent outbreaks among humans and livestock in several parts of the globe. Predicting RVF’s habitat suitability under different climate scenarios offers vital information for developing informed management schemes. The present study evaluated the probable impacts of climate change on the distribution of RVF disease in East Africa (E. A.), using the maximum entropy (MaxEnt) model and the disease outbreak cases. Considering the potential...

<p>The city of Goma is located in the eastern region of the Democratic Republic of Congo. With around one million inhabitants, it is built on lava flows, 15 km south of the active Nyiragongo volcano. Historically, the town was affected twice by eruptions, in 1977 and 2002 and severe destructions were reported. At that time, no volcanic risk preparedness and management tools had been implemented, and communication during and after the eruption was not consistent enough to avoid...

This study assessed the influence of humanitarian assistance post conflict interventions measures on reconstruction of public teacher training colleges in South Sudan. The study adopted a descriptive cross-sectional survey design and a total of 1953 respondents including the principals, tutors and teacher students from 3 registered and operational teacher training colleges in South Sudan. Stratefied random sampling technique was used to select 321 respondents as the sample size. Pilot study...

Young people in East and Southern Africa need greater access to reliable information about health and education in order to make informed decisions on health matters—focusing on HIV and teenage pre...

This study investigated the influence of grade level on the development of science epistemological beliefs and the relationship between science epistemological beliefs and science achievement among co-educational secondary schools of Homa Bay County, Kenya. The study employed cross-sectional and correlational survey designs with purposive sampling. Epistemological Beliefs Questionnaire (EBQ) was used to measure science epistemological beliefs. The instrument was administered to 214 students...

This paper ascertained the level of awareness of climate change among rural rice farmers in Anambra Agricultural zone of Anambra state, determined the effect of socio-economic characteristics of the farmers on their perception of climate change, and identified the coping strategies adopted by these farmers to mitigate the impact of climate change. A multistage sampling technique was used to select a total of 120 rice farmers in rice producing areas of Anambra Agricultural zone. Descriptive...

<p>Historically droughts are one of the natural hazards in Zimbabwe with a significant impact on community resilience and threaten the livelihood of already vulnerable people. Agricultural activities are the primary source of income, where the dominant rain-fed agriculture is exceptionally vulnerable to climate extremes, reducing the country's agricultural productivity. The Zimbabwe Red Cross targets crop losses as the drought impact to prioritize in the drought impact-based...

<p>The Upper Awash valley runs across a volcano-sedimentary sequence dated from Late Miocene to about 500 my ago. The volcano sedimentary sequence in the Upper Awash valley developed within a closed basin at the western margin of the Main Ethiopian Rift branch and was affected by tephra sedimentation from nearby sources but also from volcanoes from the rift floor, and local fissural/dome eruptions. Dynamic interaction between rift tectonics, volcanic activity, tephra erosion...

South African universities have evidenced exponential increases in the numbers of doctoral students, bringing pressure to bear upon traditional supervisory practice. With the literature on the challenges experienced by international postgraduate students at South African universities being very limited, it was anticipated that the challenges experienced by international postgraduate students abroad could be drawn upon to inform supervisory practice. The aim of this paper was to perform a...

<p>Following the high temperatures recorded in the Sahel during 2010 and most recently in May 2013 in the northern part of Senegal where the temperature oscillated between 45 and 50 degrees, significant human deaths were recorded. A good understanding of the dynamics of these heat waves thus become necessary not only to improve the prediction of these events, but also to better assess the impact of future climate change on the occurrence and intensification of these heat waves....

While climate change has harsh universal impacts, it is believed that its negative effects fall disproportionately on hotter, developing regions. This paper examines these claims using a panel datasets for 84 OECD and Sub- Saharan African countries between 1970–2018. I document both the evolution of country-specific temperatures and the long-term economic impact of temperature and precipitation variations on GDP per-capita. Using a panel auto-regressive distributed lag model on the sample...

Although recent research has reported equity gains in the university-level physics classroom, there remains evidence of significant inequities by race. We conducted a series of multiple linear regressions to examine the magnitude of these inequities in introductory mechanics final exam scores. When we followed a common method of grouping students by underrepresented minority (URM) status in our statistical analysis, we found that when controlling for prior knowledge, based on ACT math and...