• 2017 Jun

• Optimizing the life cycle of an office building at semiarid region

Abstract

Energy consumption by occupants during utilization phase concerns the increase of global warming potential and a shortage of energy resources. Energy consumption in an effective way decreases the risk of global warming. Use of materials with high embodied energy and embodied carbon in building components may improve the energy performance of the building, but it can ameliorate global warming. The issue of Life Cycle is... Read more.

• 2017 Jun

• Design and simulation of direct torque control of induction motors using VHSIC Hardware Description Language (VHDL)

Abstract

Induction motors are currently used in many industrial applications. Thus, their control techniques have received a lot of interest. An efficient method of induction motor control is the Direct Torque Control (DTC). It is considered particularly interesting since it is independent of machine rotor parameters and requires no speed or position sensors. This paper presents a simulation of a DTC strategy for three-phase... Read more.

• 2017 Apr

• Investigation of attenuation parameters for concrete shielding using simulations through iterative approach and measurement

Abstract

The intensity of the ionizing radiations can be reduced by allowing them to pass through certain materials and such external materials are known as shields. The shielding material is often chosen based on the type and intensity of the radiation. The radionuclides of standard radioactive sources for calibration purpose or therapeutic use, the irradiated components that produce ionizing radiation of high intensity shall... Read more.

• 2017 Mar

• A comparative study of the creep behavior of laminated composites: Effect of type of fiber and matrix

Abstract

This paper presents the effect of matrix type on creep behavior at 80% loads of ultimate tensile strength of two laminated composites at different fiber and matrix system. For this, two types of laminated composites were manufactured based on two types of fibers (carbon fabric and glass fabric) with different matrix systems EPOCAST 50-A1 (EP50-A), Epoxy STR (STR) and Epoxy INJ812 (INJ). The tensile and creep behavior of... Read more.

• 2017 Mar

• Glance at potential future combating of diseases: Bioengineered antimicrobial organisms

Abstract

The incidence of diseases is on the surge as exemplified by the recent occurrence in West Africa of Ebola Virus (EBOV) and increase of Zika Virus in Brazil. These pathogens have evolved strategies to evade the human immune system and thus continue to be globally important human pathogens. Bioengineering capabilities are on the increase with rapid advances in synthetic biology and allied technologies (nanobiotechnology,... Read more.

• 2017 Feb

• An effort-based evaluation of pedestrian route choice

Abstract

Route choice is one of the main challenging problems from theoretical and practical viewpoints in the realm of pedestrian behaviour. A prime underlying concern of researchers in this field is to identify criteria or discover principles that pedestrians use to select their routes. Despite the fact that there are infinite possible routes between two given destinations in space, pedestrians in real situations tend to... Read more.

• 2017 Feb

• Groundwater resilience to climate change in the eastern Dead Sea basin – Jordan

Abstract

Pumping of 82 MCM/yr from Mujib basin (Eastern Dead Sea), coupled with the 54 MCM/yr recharge rate, has led to diminished groundwater levels and dramatically affects ecosystem services. Climate change compounds these issues by reducing recharge and increasing the ecosystem’s hydrological demand. This paper investigates groundwater resilience to climatic changes in Mujib basin by modeling resilience for the years... Read more.

• 2017 Jan

• Water harvesting: Groundwater storage reservoir in Wadi Ishe, Jordan

Abstract

Wadi Ishe pilot project is a trial project set to illustrate the recharge of runoff and storage in an artificial groundwater reservoir to minimize evaporation losses and as a substitute of water supply for rural arid areas that could be used for stock watering and some agricultural activities. The HEC-Hydrologic modeling System was used to estimate the runoff potential. The model in the research will provide... Read more.

• 2017 Jan

• Anomalous modes in Faraday instability

Abstract

This research presents an experimental study on the Faraday instability in one-dimensional cells filled with a mixture of water and glycerol, and for a range forcing frequency between 10 and 60 Hz. It showed that for a particular forcing frequency, whose value depends on the width of the cell, an anomalous surface oscillation arises, that appears as a large wavelength mode oscillating subharmonically with respect to the... Read more.

• 2016 Dec

• Quantum fluctuations of the spacetime geometry in the spectral scheme#

Abstract

The spectral scheme for spacetime geometry is a totally new framework for quantitatively describing the spacetime geometry in terms of the spectra of a certain elliptic operator (typically the Laplacian operator) on the space in question. The central idea of the framework can be symbolically stated as ``Let us hear the shape of the Universe!" There are several advantages of this framework compared to the... Read more.

• 2016 Nov

• Evaluation of productivity and rates of application of poultry manure for remediation of kerosene oil contaminated soil in Abakaliki, Southeastern Nigeria

Abstract

This experiment was carried out in order to evaluate productivity and rates of poultry manure used to amend kerosene oil contaminated soil on 0.18 ha of land. The land area was contaminated with 5% of kerosene oil equivalent to 50,000 mgkg-1 and thereafter the field laid out using randomized complete block design (RCBD) with four treatments of 10, 20, 30 tha-1 of poultry manure and control which were replicated five... Read more.

• 2016 Nov

• Thermal treatment in air of direct current (DC) magnetron sputtered TiN coatings

Abstract

TiN coatings were deposited onto mirror polished stainless steel substrates by reactive DC magnetron sputtering using a pure Ti target and Ar+N2 atmosphere. The deposited TiN coatings were thermally treated in ambient air at temperatures ranging from 500 to 700°C for times between 1 and 16 h. The as-deposited and thermally treated coatings were characterized using glow discharge optical emission spectroscopy, x-ray... Read more.

• 2016 Oct

• A new gateway node for wireless sensor network applications

Abstract

Wireless sensor network based applications have gained a significant importance in recent years. However, it creates problems when sending the detected data over distant stations even though establishment of sensor networks by means of ZigBee communication modules as the communication range of these modules are limited. For this reason, in this study, design of a gateway node which can be used in the sensor network... Read more.

• 2016 Oct

• Lessons withdrawn from the diversity of inland valleys cultivation at a regional scale: A case study of Mono and Couffo departments in south Benin

Abstract

In a context of greater climate variability and increasing population pressure, inland valleys are considered as high potential agricultural area. This agricultural potential has been subject to multiple initiatives for characterization which were generally based on the physical characteristics. However, support strategies based on such inventories often fail to fit with the promoters’ expectations. One of the... Read more.

• 2016 Oct

• Evaluation of reinforced concrete buildings in Northern Cyprus using TEC2007 and EC8 in respect of cost estimation

Abstract

Cyprus lies in a seismic zone and the whole island (northern and southern part of the island) can be considered as an earthquake vulnerable area. In the last years, earthquake design of reinforced concrete structures becomes an important phenomenon due to unfortunate earthquakes. This amplifies the need to make such buildings earthquake resistant at a reasonably low cost. Most of the buildings are mid-rise reinforced... Read more.

• 2016 Oct

• Dynamic modelling and predictive health monitoring for vibration control and resonance of rotating machinery

Abstract

The aim of this study is to investigate the critical speed analysis and response of a rotating machinery. The search for increasingly high performances in the field of the vibration phenomena which is subject rotor are increasingly important and can lead to system instability. The use of the finite element method makes to establish dynamic equations of the movement. Numerical calculations of the model developed, can... Read more.

• 2016 Sep

• Bayesian analysis to detect change-point in two-phase Laplace model

Abstract

The general form of the change-point problem is to determine the unknown location m, based on an ordered sequence of observations X1,X2,.., Xm, Xm+1,..., Xn such that, the two groups of observation X1,X2,.., Xm and Xm+1,..., Xn follow distinct models. In this paper the problem of change-point detection of two-phase Laplace model is considered. Our object is to find... Read more.

• 2016 Sep

• Slow translation of Tropical Africa’s wealth in medicinal plants into the clinic: Current biomolecular infrastructural capacity and gaps in sub-Saharan universities

Abstract

Tropical Africa has one of the world’s largest endowments in medicinal plant diversity. However, this potential has not been translated into pure drugs of proven efficacy and safety synonymous with modern pharmaceuticals. The basis for the slow translation of Tropical Africa’s medicinal plant wealth into value-added medicines acceptable in the doctor’s clinic is not clear. In this work, we sought to... Read more.

• 2016 Aug

• Analysis of the environmental effects of international outsourcing: Study of the iron casting industry

Abstract

The international outsourcing of intermediate products is a common practice in manufacturing. Although outsourcing labor- and resource-intensive production to developing countries is based on financial motives, the decision should also be evaluated from an environmental perspective at a global scale. In this study, the environmental effects of four supply chain scenarios are analyzed through a life-cycle assessment... Read more.

• 2016 Aug

• Exploring the road to improving knowledge and access to female condom in Nigeria: Evidence from Edo, Delta and Lagos states

Abstract

The female condom is a relatively new product that is intended to serve the dual role of protecting against unwanted pregnancy and sexually transmitted infections (STI). Very few studies have been conducted on the use of female condom in Nigeria. Therefore, information is lacking about its continued use, particularly among women at high risk of HIV and other STI. With the above consideration, the Society for Family... Read more.