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Sexual practices of adolescents have enormous consequences on their health and career outcome. The objective of this study was to assess the sexual practices among senior secondary students in private schools in Uyo, Nigeria. This was a descriptive crosssectional study. Data were collected using structured, self administered questionnaire and analyzed with SPSS version 23 software. Level of significance was set at 0.05. A total of 353 respondents participated in the study. The mean age was...

Oldoinyo Lengai is the only active carbonatite volcano within the East African Rift Valley in northern Tanzania. The volcano is dominated by peralkaline silicate rocks with natrocarbonatites. This study presents new mineralogical and geochemical data, including Sr–Nd–Pb–Hf–Mg isotopic compositions, for volcanic rocks at Oldoinyo Lengai and lavas from the nearby Gregory Rift Valley. The samples analyzed in this study include olivine melilitite, melanephelinite, wollastonite nephelinite, and...

The present study aimed to address some of the environmental justice issues associated with pollution and depletion of resources and correct the relationship between human and the environment and support the values, dimensions and principles of environmental justice in the target audience and achieve the objectives of environmental media. Through a suggested model, interviews were conducted with a number of readers as well as attending conferences and workshops at the Ministry of...

• Racial profiling and discrimination frequently occur in consumer settings. • To address discrimination, Starbucks’ facilitated nationwide anti-bias trainings. • White social media users expressed fractured opinions regarding the training. • Color-blind and color conscious frames were used to support and oppose efforts. • Anger, annoyance, and even appreciation were expressed towards the training.

Call detail records (CDRs) provide a significant opportunity to understand human development at a high spatiotemporal resolution, specifically in developing countries, which face financial, human, and capacity constraints. This study attempts to model and identify features derived from CDRs that can best predict relative wealth and poverty across Papua New Guinea (PNG), by combining it with tele-survey data. Our findings show promising results on the prediction of dichotomous variables...

Abstract Promoting sustainable development is top on the agenda of many national governments. The provision of quality primary education is key in pursuing this agenda and relies heavily of committed teachers. This article explores the potential contribution of transformational leadership practices of primary school principals in promoting teacher commitment. It is argued that primary school principals who exhibit the transformational leadership feature of commitment motivate teachers...

In the North East of the Moroccan Mediterranean coast, 15 km south east of the Al Hoceima city, the coastal aquifer of Ghiss-Nekkour occupies an area of 100 km2. Its exploitation constitutes a priority economic imperative for the city of Al Hoceima and its hinterland, due to the tourist character of the city and the agricultural orientation of the region. In the surface of this study area, alternate rural-type habitats with autonomous sanitation systems, agricultural plots, uncultivated...

Abstract Background Ethiopia is one of the ten countries in the world that together account for almost 60% of all maternal deaths. Recent reductions in maternal mortality have been seen, yet just 26% of women who gave birth in Ethiopia in 2016 reported doing so at a health facility. Maternity waiting homes (MWHs) have been introduced to overcome geographical and financial barriers to institutional births but there is no conclusive evidence as to their effectiveness. We aim to evaluate the...

The Namibian school system puts little emphasis on art subjects such as music and emphasizes STEM subjects instead. Despite heavy focus on math teaching at primary schools, many students are not learning. This study investigates how the rich music oriented indigenous culture of Namibia can be leveraged to assist in math education by teaching math via music. First, previous findings from literature are discussed in the Namibian context. Second, three focus groups (n=12, n=2 and n=3) are...

Students’ perspectives of science education are of critical importance as they constitute one of the major stakeholders whose views are necessary for any enhancement of science education. The main objective of the present paper is to identify the extent of the effect of the change in the medium of instruction from Arabic to French at tertiary level on students’ learning of science and thus on the quality of science education. To this end, the study employed focus group interview to explore...

The understanding of the impacts of climate change on fisheries is constantly increasing and can be organized around several main factors - ocean acidification, sea-level rise, higher water temperatures, deoxygenation, changes in ocean currents - although these factors are unequally known and hard to model in terms of scope - where they will occur and where they will be felt the most - and severity. For instance, although the impacts of acidification are not as well understood as the effects...

Augmented reality to qualify a new form of interaction between the user and the machine based on the association of real objects, from the user's environment, and virtual. In Morocco the use of this technology in the learning context remains in the embryonic phase that tries to overcome several issues (Profile of the designers, Users, and the learning scenario). Scripting is primarily a work of content design, resource organization, activity planning and mediations to induce and accompany...

Background.Groundwater quality can be poor in Nigeria due to indiscriminate refuse dumping. Exposed dumps serve as point source pollution that discharge potentially toxic heavy metals into the environment.Objectives.The present research aimed to assess the impact of metal pollution on groundwater quality in hand-dug wells around an active dumpsite and to evaluate the long-term human health effects of this pollution.Methods.Water samples from hand-dug wells used for drinking, irrigation and...

Climate change has severely impacted southern African vegetation over the last decades. Recent studies have shown that limiting the global warming level to well below 2 °C above pre-industrial level may reduce the catastrophic effects of anthropogenic climate change. However, there is limited knowledge on the response of vegetation to climate change at different global warming levels. This study examines how southern African vegetation may respond to climate change at 1.5 °C and 2 °C...

Drought is a frequent disturbance in many regions of the globe and can have a particularly severe impact on vegetation. Over southern Africa, where drought is a regular occurrence, relatively little is known about how quickly vegetation responds to droughts. We characterized the meteorological drought occurrence in southern Africa from 1981 to 2005 and examined the impacts on vegetation productivity, as derived from satellite data. The spatio-temporal extent and severity of droughts were...