Open Access Opinion Article

Four Experiences and Some Reflections about the Influence of Mathematical Software on the Mathematics Curriculum

Justo Cabezas-Corchero, Eugenio Roanes-Lozano

Journal of Scientific Research and Reports, Page 154-164
DOI: 10.9734/JSRR/2015/17798

So far, the use of media in education has always been applied to achieve established goals, and the selection of these goals was slightly affected by the use of the chosen media. However, the availability of mathematical software, and, more precisely, computer algebra systems, can influence scientific methodology and, consequently, also mathematics teaching methodology. Therefore, the mathematics curriculum could, and presumably should, be reconsidered. An analysis of the possible changes at intermediate levels of the mathematics curriculum is shown in this article. Moreover, the viability of some of them is proved through their experimentation in the classroom. The chosen examples deal with: the survival function, surfaces and their projections, probability density functions, and probability calculus. These experiences are also summarized in this article. Our hypothesis is very concrete: viable curricular changes made possible by the use of computer algebra systems in a certain propitious environment do exist. We do not analyze other didactical issues such as which curricular changes could be made and which of them should be implemented; which is the influence of the teacher’s knowledge of the media and his / her motivation, etc.

Open Access Minireview Article

Snake Venom Disintegrins: Natural Products with Antitumor Effect

Ifigeneia Marinou, Dimitrios G. Koudoumas, Evangelos Marinos

Journal of Scientific Research and Reports, Page 146-153
DOI: 10.9734/JSRR/2015/17699

Cancer is a leading cause of disease globally. Treatment methods combine radiation therapy, surgery, novel drug chemotherapy and recently, nano drugs. During the past few years, the venoms of various vipers that selectively block the function of integrin receptors have been employed as potential drugs to fight cancer by inhibiting tumor progression. Special attention has been paid to disintegrins which represent an important constituent of viper venoms. Recent developments in evaluating disintegrin applications in therapies are discussed as well as the potential of using disintegrins in the future as antitumor agents.

Open Access Original Research Article

Open Access Original Research Article

The Representation of Nigerian Indigenous Culture in Nollywood

Asogwa Chika Euphemia, Onoja Ibe Ben, Ojih Emmanuel Unekwu

Journal of Scientific Research and Reports, Page 97-107
DOI: 10.9734/JSRR/2015/15596

The general objective of this study is to appraise the representation of the Nigerian (African) culture in the global market by the Nigerian Nollywood. Specifically, the study tries to find out how The Nigerian Nollywood projects Nigerian rich local cultural values to the outside world; and appraise how the influx of foreign cultural values into the Nigerian local film production affects the nation’s cultural heritage. Nigeria or Nollywood is chosen for this study because of her position in the continent and her leading role in the film industry in Africa. This study becomes also necessary because, despite the fact that Nollywood ranks and competes with Hollywood and Bollywood, in terms of quantity, locally outsell foreign ones, and are also appreciated all over the world; Nigeria continues to suffer negative image in the comity of nations and critics kept crying foul over the erosion of indigenous cultures. To this end, this study employs case reference analysis method and analyzed some films purposively selected for the performance of this task. The study observes among others that Nollywood dwells too much on the negative aspect of the nation’s cultural practices to the detriment of the nation’s image. It was also discovered that the act of borrowing themes, plots etc, from foreign films has done much harm than good to the preservation of the indigenous culture. The study concludes that the increasing quantity of filmic contents from the Nollywood had not helped much in the area of projecting the nation’s positive image and rich cultural heritage to the outside world as the quality of the filmic contents that emanate from the Nollywood remains grossly inadequate or usually situated out of context thereby re-enforcing the negative image fostered on Nigeria and Africa at large by the foreign media. The study therefore recommends among others that further productions should focus more on portrayal of the rich cultural Nigerian values rather than imitating the western culture or leaning narrowly on the nation’s or continent’s past negative cultural practices that have no place in the current Nigerian society anymore.

Open Access Original Research Article

A New Measure for Analysing Accelerometer Data towards Developing Efficient Road Defect Profiling Systems

H. Bello-Salau, A. M. Aibinu, E. N. Onwuka, J. J. Dukiya, M. E. Bima, A. J. Onumanyi, T. A. Folorunso

Journal of Scientific Research and Reports, Page 108-116
DOI: 10.9734/JSRR/2015/16840

Aims: In this paper, we propose a new measure for analysing data obtained from an accelerometer with the aim of improving road surface condition monitoring and defect detection systems.
Study Design: The study consisted of an experimental setup involving the use of an accelerometer embedded device connected to a laptop, all mounted in a vehicle for data acquisition and storage.
Place and Duration of Study: Data gathering was conducted within the campus of the Federal University of Technology, Minna, for a period of two months.
Methodology: The accelerometer was programmed to capture vibration signals along the x, y and z-axis with special interest in the z-axis because it monitors the up/down motion of the vehicle. Our algorithm uses what we call the “z-difference square” measure to analyse raw accelerometer data towards improving road defect detection. LABVIEW was used to configure the accelerometer device, while the algorithm for post data processing and statistical analyses were implemented in MATLAB.
Results: Inferences drawn from the raw data and other statistical measures indicate that the proposed measure provides the advantage of using single threshold values for detection, inherent averaging, and potential for spatial localization of potholes, as compared to other statistical measures.
Conclusion: The use of our proposed “z-difference square” measure for analysing accelerometer data will provide a simple yet efficient and effective statistical measure for improving road defect detection systems.

Open Access Original Research Article

Physiological Changes in Clarias gariepinus Induced with Bacillus Species Used as Biological Agent in Aquatic Environment

F. O. Omoya, F. C. Akharaiyi

Journal of Scientific Research and Reports, Page 117-128
DOI: 10.9734/JSRR/2015/8711

In order to study the potential use of Bacillus subtilis and B. cereus as biological control agents of mosquitoes larvae in aqueous environments as happens with B. thuringiensis var. israelensis, fish model was used hence treatments with these bacterial species will be in aquatic environment. The aim of the study was to evaluate any possible physiological alterations and toxicity to aquatic animals (catfish by inoculation with bacillus species). In this view, dissolved oxygen (DO), chemical oxygen demand (COD), pH of the experimental water culture was estimated. Effects of the Bacillus species were also monitored in fish haematology and histopathology of gill and liver tissues. Results showed that there was no significant variation (P<0.05) in the water quality parameters with catfish inoculated with B. thuringiensis and B. subtilis in comparison with the inoculation with the B. cereus. In the haematological parameters, values obtained from catfish inoculated with B. thuringiensis and B. subtilis treatments were related to values of the control group. Changes in body weight of B. cereus treated fish were reflected in the liver tissue histopathology with severe hepatic and damages to gill rakes and filaments. Summarily, the safety of B. subtilis as a biological control agent in an aquatic environment is guaranteed but B. cereus as an alternative to the existing biological control agent lack valuable safety records as it can cause harm in aquatic animals and human environments.

Open Access Original Research Article

Climate Adaptation Strategies Used by Banana and Plantain Farmers in Delta State of Nigeria

M. A. Adegboye, C. E. Otuagoma

Journal of Scientific Research and Reports, Page 129-136
DOI: 10.9734/JSRR/2015/8474

Climate variation is already a threat to agricultural production and employment of appropriate adaptation strategies could help reduce its effect. Hence, this study was conducted to determine the adaptation strategies being used by banana and plantain farmers in Delta state of Nigeria. Multistage sampling techniques were used to sample 136 respondents on whom interview schedule were administered. Descriptive and inferential statistics were used to analyze the data. Results show that 67.6 % of respondents were male, 64.7 older than 50 years of age, 80.1 % were married, only 7.4 % had no form of formal education and 72.1% had over ten years of farming experience. Of all the 16 items used to test knowledge of climate variation events, 8 had score above mean (0.5±0.4). Similarly, 9 of the 18 adaptation strategies had score above mean (0.4±0.4). Majority of the respondents (50.7%) had high level of knowledge of the climate variation events (7.6 – 11). However, majority (53.7%) had low level of adaptation strategies utilization (3 – 7.4). It can be inferred from the result that the utilization of adaptation strategies by the respondents was low. Therefore, it is recommended that further education be provided to farmers on the use of climate variation adaptation strategies to reduce the effect of the climate variation on agricultural production.