1,599 research outputs found

    Global Sex Trade and Women Trafficking in Nigeria

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    Academic discourses and policy debates on the phenomenon of women trafficking have focused on the threat of illegal migration, migration management, and the stereotypical linkages between criminality and migration. Such themes neglected the perspectives of trafficking victims and the social context, most especially closed borders and poverty. Obviously, women trafficking constitute one of the anxieties and disruptive effects of globalization. For many women, migration across the polarized economy under the regime of globalization is associated with exploitation, criminalization, and insecurity. This paper argues that trafficking in women reflects inequality on a global scale: transfer of resources from depressed economy to prosperous economy, from the periphery to the core, and from rural to urban areas. There is a thriving market for trafficking in women to Europe for sexual purposes, as economic motivations, organized global syndicates, poverty, and patriarchal pressures have ensured steady supply of women in the global sex industry. Despite the political will, the weakening influence of the Nigerian government in the global economy and international diplomacy, as well as porous borders, undermines its efforts in rolling back women trafficking

    Square Wave Modulation in a Closed-Loop Semiconductor Laser with Optical Feedback

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    We achieve chaotic behavior in the dynamics of a semiconductor laser with ac-coupled optical feedback by experimentally applying a new modulating waveform to the bias current other than a pure sine wave. The embedding technic of the attracter and the quantitative bifurcation diagram analyze the duty cycle and phase effect. The dynamics become chaotic with the increasing values of the duty cycle, and it is chaotic in all values of phase change. Furthermore, the applied square wave modulation gives additional parameters to be tuned, which enhances the security level provided by a closed-loop semiconductor laser with optical feedback. &nbsp

    The role of foreign aids and income inequality in poverty reduction : A sustainable development approach for Africa?

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    In the last decades, international interventions mostly through foreign aids have consistently been directed toward sustainable development objectives such as reduction of poverty in African countries. Thus, this study investigates the effect of foreign aids and income inequality in poverty reduction in Africa for 1990–2016. The novelty lies in the investigation of the effectiveness of aid remittances to Africa from the United Nations and Organization for Economic Cooperation and Development (OECD) which has previously been overlooked in extant studies. By using the system Generalized Method of Moments, the study showed that the interaction of inequality with the United Nations Development Programme (UNDP) funds and OECD Official Development Assistance is not statistically significant. Meanwhile, the interventions from the UNDP funds and OECD Official Development Assistance statistically yield significant and expected results of reducing poverty in the poor continent. However, the study surprisingly failed to establish that remittances from the UNDP have significantly mitigated poverty in Africa. Importantly, this study presents a significant policy guide for the governments and the stakeholders and recommends that the donor agencies adopt poverty-reduction, and income distribution-based criteria for the allocation of their resources to reduce poverty in the continent.© The Author(s) 2022, corrected publication 2022. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.fi=vertaisarvioitu|en=peerReviewed

    IoT and Neural Network-Based Water Pumping Control System For Smart Irrigation

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    This article aims at saving the wasted water in the process of irrigation using the Internet of Things (IoT) based on a set of sensors and Multi-Layer Perceptron (MLP) neural network. The developed system handles the sensor data using the Arduino board to control the water pump automatically. The sensors measure the environmental factors; namely temperature, humidity, and soil moisture to estimate the required time for the operation of water irrigation. The water pump control system consists of software and hardware tools such as Arduino Remote XY interface and electronic sensors in the framework of IoT technology. The machine learning algorithm such as the MLP neural network plays an important role to support the decision of automatic control of IoT-based irrigation system, managing the water consumption effectively.Comment: 6 pages, 5 figures, 1 tabl

    SEASONAL VARIATION IN MACRO-MICRONUTRIENT COMPOSITIONS OF THE FLESH AND SHELL OF THE PORTUNID CRAB Callinectes amnicola (De Rochebrune, 1883) FROM THE COASTAL WATERS OF SOUTHWEST NIGERIA

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    Portunids are decapod crustaceans of high economic importance. Seasonal variation in macronutrient and micronutrients contents of Callinectes amnicola from three interconnecting lagoons were investigated using standard methods. The percentages of protein and moisture contents in the flesh were higher than that of the shell, while higher ash and nitrogen free extract were obtained in the shell. Crude fibres was not detected in flesh of C. amnicola but detected in shells with values ranging from 0.30 ±0.72 % (C. amnicola from Lagos Lagoon) to 0.55 ±2.15 % (C. amnicola from Badagry Lagoon). There were statistical differences (P ˂ 0.05) in crude fibre and carbohydrate levels of  the crab shell during wet and dry seasons while significant difference exist in protein level only in wet season. Protein showed negative correlations with all the minerals in crabs from Badagry and Epe Lagoons but positive correlation with all examined minerals in Lagos Lagoon crabs. The study demonstrated that Callinectes amnicola is rich in macro-micronutrients and characterized by low lipid content (< 3%). The nutrient biochemical constituents in the crab species vary with seaso

    Residents’ Satisfaction with Public Facilities and Neighbourhood Environment in Slum Residential Areas of Jos, Plateau State, Nigeria.

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    The high density residential areas of Jos were scaled on the basis of level of environmental decay and general planning in order to select the worst residential slum areas for study. Three areas, Gangare, Angwanrogo and Dadinkowa emerged as study sample. The areas were subjected to assessment using questionnaires with a view to determining the residents’ degree of satisfaction with seven loaded factors: public institutions, public facilities, environmental conditions, transportation facilities, recreational facilities, neighbourhood safety and commercial facilities. Results obtained showed a general trend of dissatisfaction of the residents of the areas with all the seven measured factors. The tested hypothesis indicated calculated x2 value of 13.57 which is greater than the theoretical value, 2.73 at α 0.05 and 1.65 at α 0.01 which implied that there is a significant level of correlation in the degree of satisfaction among the three residential areas. Therefore, the researchers concluded that similar policies and programmes aimed at improving the environmental setting and public facilities will be suitable for all slum residential areas of Jos. Following this, it is recommended among others that, the areas should be declared   as Action Plan Areas (APA) for emergency action with priority accorded to provision of access roads, drainages, planned refuse disposal systems, and public enlightenment programmes on the benefits of environmental sanitation. Public Private Partnership (PPP), State and local government authorities are recommended for the implementation process. For sustainability of the programmes and projects, the involvement of members of the communities is also recommended. Keywords: Residents’ satisfaction, public facilities, high density, residential areas, loaded factor

    An evolve-then-correct reduced order model for hidden fluid dynamics

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    In this paper, we put forth an evolve-then-correct reduced order modeling approach that combines intrusive and nonintrusive models to take hidden physical processes into account. Specifically, we split the underlying dynamics into known and unknown components. In the known part, we first utilize an intrusive Galerkin method projected on a set of basis functions obtained by proper orthogonal decomposition. We then formulate a recurrent neural network emulator based on the assumption that observed data is a manifestation of all relevant processes. We further enhance our approach by using an orthonormality conforming basis interpolation approach on a Grassmannian manifold to address off-design conditions. The proposed framework is illustrated here with the application of two-dimensional co-rotating vortex simulations under modeling uncertainty. The results demonstrate highly accurate predictions underlining the effectiveness of the evolve-then-correct approach toward realtime simulations, where the full process model is not known a priori

    Relationship between rickets and incomplete distal renal tubular acidosis in children

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    <p>Abstract</p> <p>Background</p> <p>In the Sub Saharan Africa Rickets has now been established to be due primarily to calcium deficiency and sometimes in combination with vitamin D deficiency. The main thrust of management is calcium supplementation with or without vitamin D. An observation was made that some children with nutritional rickets do not respond to this management modality. The recently reported high prevalence of Incomplete Distal Renal Tubular Acidosis (idRTA) in adults with osteoporosis as brought to fore the possibility of this being a possible cause of calcium wastage and therefore the poor response in these group of children with rickets.</p> <p>Aim</p> <p>To determine the prevalence of idRTA amongst a cohort of subjects with rickets</p> <p>To show a relationship between rickets and incomplete distal renal acidosis</p> <p>To determine the response of children with rickets and idRTA to addition of Shohl's solution to therapy</p> <p>Methodology</p> <p>Two separate cohorts of children with rickets performed the ammonium chloride loading test to detect those with incomplete renal tubular acidosis. Following identification for idRTA, Shohl's solution was added to therapy of calcium and vitamin D supplementation and their response compared to those without idRTA on calcium and vitamin D supplementation solely.</p> <p>Results</p> <p>50 children with rickets aged from two to six years of age and composed of 29 females and 21males were investigated. Incomplete renal tubular acidosis was found in 38% of them. Prevalence of idRTA was highest amongst those aged 3-6 years of age. Those with idRTA had worse limb deformities, biochemical and radiological parameters than those who hadn't. Rate of response on those with idRTA treated with Shohl's solution was at par with those without idRTA.</p> <p>Conclusion</p> <p>Incomplete idRTA exist amongst children with rickets and should be looked out for in severe rickets and older children. Treatment of idRTA will lead to optimal response and healing of rickets.</p
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