Abbreviation: Sci. Res. Essays
Start Year: 2006
Page 1 of 135, showing 20 records out of 2681 total, starting on record 1, ending on 20
DOI: 10.5897/SRE2016.6420[Article Number: A46460062084]
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.
DOI: 10.5897/SRE2016.6449[Article Number: 2D2F86961859]
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.
DOI: 10.5897/SRE2016.6456[Article Number: 5A94F1F61524]
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.
DOI: 10.5897/SRE2015. 6292[Article Number: 1E8BDF161051]
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.
DOI: 10.5897/SRE2016.6424[Article Number: D85C6CC61053]
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.
DOI: 10.5897/SRE2016.6452[Article Number: 325998961022]
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.
DOI: 10.5897/SRE2016.6401[Article Number: 142DAB761024]
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.
DOI: 10.5897/SRE2016.6441[Article Number: 0B1C97D60731]
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.
DOI: 10.5897/SRE2016.6435[Article Number: 4C4543C60480]
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.
DOI: 10.5897/SRE2016.6421[Article Number: AB30A1B60214]
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.
DOI: 10.5897/SRE2015.6287[Article Number: F6CD67660204]
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.
DOI: 10.5897/SRE2016.6423[Article Number: 40FF94959675]
Diabetes mellitus (DM) has progressively increased in global prevalence. Recent studies have found that patients with DM may suffer from hearing impairment as a chronic complication. The effect of hearing loss may impair the quality of life of patients which affects functional, social, as well as psychological aspects. Both DM and hearing loss are considered to be associated, although this correlation remains elusive.... Read more.
DOI: 10.5897/SRE2016.6405[Article Number: 05EE64F59673]
This paper presents a physical model which describes the layer growth kinetics and the nitrogen concentration profiles during gaseous or plasma nitriding of pure iron. The model is related to a one dimensional moving boundary value problem where the initial concentration profiles are assumed to be linear and a new boundary condition at the diffusion zone is proposed. The model is solved by using a classical finite... Read more.
DOI: 10.5897/SRE2015.6378[Article Number: 4180CA259499]
DNA microarray analysis is the main core in genome mapping. Each microarray image contains millions of information about genes. Microarray analysis is considered one of the most recent and important technologies in exploring the genome. One of the key steps in microarray analysis is to extract gene information from the gene spots, these information represent gene expression levels in the microarray. This paper proposes... Read more.
DOI: 5897/SRE2016.6402[Article Number: 05C12DB59302]
This paper proposes frequency response based identification of a parallel resonance transfer function in power systems including capacitor banks for power factor improvement. The proposed method is simple and easy to understand by finding undetermined coefficients. Only magnitudes of measured harmonic currents for some orders of both source and load are required. Validation of the proposed method is given in frequency... Read more.
DOI: 5897/SRE2015.6361[Article Number: C31D32558755]
The purpose of this paper was to address the issue of E-government website evaluation regarding the provision of a decision-making framework built around the concepts of website evaluation. The proposed framework deploys a Bayesian Belief Network (BBN) to conquer the subjectivity and inaccuracy that characterizes the conventional models for E-government website quality assessment. Since the developments of E-government... Read more.
DOI: 5897/SRE2016.6387[Article Number: 3AB783B58620]
Housing in Colombia, especially social housing, has been a priority issue for governments in recent years; however, it is necessary to consider building more sustainable homes with less environmental impact using local material as opposed to building with conventional materials. Based on these needs, this research aimed to evaluate the potential environmental impact of social housing by predominantly using local... Read more.
DOI: 10.5897/SRE2016.6381[Article Number: 2DFDF3858431]
Web optimization is the process of optimizing the web to increase visibility or rank of websites in search engines. Furthermore, this process is also viewed from multiple perspectives, from optimizing inter-server communication that offers the best responses to users’ queries and provides targeted advertisements to users of a website. With this regard, the process of automatic classification and information... Read more.
DOI: 10.5897/SRE2015.6377[Article Number: 299CE0A58424]
Deformation analysis is crucial to applications in geodesy, structural engineering, and geology, of which the main goal is to detect the behaviors of a deformed body. Traditional deformation analyses rely on a limited number of observations and thus give a relatively poor description of the strain field on the entire object. In this study, a method based on the displacement gradient model and unified least-squares... Read more.
DOI: 10.5897/SRE2015.6326[Article Number: 8EE7F9257970]
The study was conducted in Northern Ghana comprising of the Northern, Upper East and Upper West regions. The objective of the study was to analyse maize-based rain-fed vegetable production systems with a view to explore their potential to contribute to food and income security for rural households. A combination of qualitative and quantitative data collection methods were employed during the study. Questionnaires were... Read more.
Page 1 of 135, showing 20 records out of 2681 total, starting on record 1, ending on 20