Content Vol. 2 N 5, 2016
 

Pages 254 - 308



On the Theory of Numbers; Avoka John, F.K. Darkwa, Isaac Adetunde; Inter. J. Acad. Stud.  2(5):(2016)254-264

Abstract:
This is work deals with theory of numbers in which detached coefficients method and staircase method were employed. The two methods were computed with their algorithms and illustrative examples to ascertain the results for square of numbers and cubic of integer’s numbers.

Key words:
Multinomial Theorem Algorithms of Modified Detached; Coefficients; Modified Detached Coefficients
Method; Algorithms of Staircase Method; Staircase Method Detached Coefficients Method.


On the Theory of Numbers: Detached Coefficient and Staircase Methods; Avoka John, F.K. Darkwa, Isaac Adetunde; Inter. J. Acad. Stud.  2(5):(2016)265-282

Abstract:
This is an extension of the earlier work on the theory of numbers Paper I. In this paper we looked into two methods vis – a - vis detached coefficients method and staircase method. Computation were done for the fifth power of integers, using the modified detached coefficients method, computation of the squares of integers, using the modified detached coefficients method ( for 4digits), computation of the squares of integers, using the modified detached coefficients method (for 5digits), computation of  the cubes of integers, using the modified detached coefficients method (for 4digits), computation of  the cubes of integers, using the modified detached coefficients method (for 5digits), computation of  the fifth power of integers, using the staircase method (for 2digits), computation of  the fifth power of integers, using the staircase method (for 2digits). Comparison of the two methods were done, it was observed that in terms of computing powers of positive integers, Staircase method has lesser steps than the Modified Detached Coefficients method in terms of computation.

Key words:
Theory of numbers; Detached coefficients method; The modified detached coefficients method; Staircase method.


Assessment of Teacher Trainees’ Performance in Lesson Presentation: A case of a Kenyan Public University; Florence Kanorio Kisirkoi , Godfrey Shedd Mse; Inter. J. Acad. Stud.  2(5):(2016)283-290

Abstract:
Teaching practice is a significant aspect of teacher preparation that equips the teacher trainees with pedagogies that enhance students’ learning. This study assessed the effectiveness of teaching practice strategies during the pre - service period of teacher preparation in the Bachelor of Education degree program in a public university in Kenya. The objectives of the study were to establish the extent to which teacher trainees effectively presented their lessons and used teaching learning resources in class interaction. The Pedagogic Content Knowledge (PCPK) model by Shulman (1986) guided the study. A case study approach was employed with a study population of 500 Bachelor of Education teacher trainees who were going through the teaching practice stint in the third year of their course. The study assessed the teacher trainees’ lesson presentation from introduction to conclusion including use of teaching learning resources during the lesson presentation. Secondary data was used by analysing the Teaching Practice Observation Schedule entries and scores by 36 teaching practice assessors of the 500 teacher trainees. It was found that the trainees’ performance in lesson presentation was rated ‘fair’ for the majority of the teacher trainees in a rating scale of Very good, Good, Fair and Poor. In learner engagement and participation, the majority of the teacher trainees performance was rated ‘fair’ as follows: lesson introduction 300(60%) fair; lesson development 290(58%) fair; conclusion 280(56%) Fair. A majority (256(51%) of the teacher trainees were also rated ‘fair’ in the use of teacher made and acquired teaching learning resources. A longitudinal study should be conducted to follow up the teacher trainees in the future teaching schools to find out the trend of their performance. The study indicates that the use of resources in the classroom and lesson presentation strategies require special emphasis in teacher education.

Key words:
Strategies; Pedagogy; Learning; Lesson presentation.


Spatial variability in biomarker responses in mussel populations inhabiting the Moroccan coastal areas; Laila El Jourmi, Abdessamad Amine, Nadia Boutaleb, Bouchaib Bahlaouan, Nezha Abouakil, Said Lazar, Said El Antri; Inter. J. Acad. Stud.  2(5):(2016)291-302

Abstract:
This study intends to follow, from April 2010 to July 2012, the spatial variability of five parameters considered as potential biomarkers of pollution (CAT, GST, AChE, MDA & MT) in Pernaperna mussel populations inhabiting the Moroccan coast, with aim of evaluating the anthropic stress generated by the grand Casablanca. The one-way ANOVA results generally indicated that biochemical parameters showed statistically significant differences (Scheffe test, p<0.05) at the sites undergoing environmental pressure (S1 & S2) when compared to the control ones (S3 & S4). In fact, it was recorded the higher level (Scheffe test, p<0.05) of CAT, GST & MDA (in April 2010 & July 2010) in S1samples than in reference one (S3).The levels of CAT (in April 2011, July 2011, Dec. 2011, March 2012 & July 2012), GST (in April 2011 & July 2011) & MT (in April 2010) were significantly higher (Scheffe test, p<0.05) in mussels issuing from S1 in comparison to S3 & S4.Our results also indicate that CAT (in April 2011, Dec. 2011 & March 2012) GST (in April 2011, Dec. 2011 & March 2012) & MT (in April 2010 & July 2010) of mussels living in S2 was markedly increased (Scheffe test, p<0.05) than in S3 & S4.Analyses of MDA (in April 2011, July 2011, December 2011, March 2012 & July 2012) & MT (in April 2011, July 2011, March & July 2012) contents revealed significant higher values (Scheffe test, p<0.05) in mussels from S1 & S2 by comparison to S3 & S4 samples. By contrast, AChE was markedly inhibited (Scheffe test, p<0.05) in mussels from S1 & S2 compared with those collected from S3 (in Dec. 2011, March 2012 & July 2012) & S4 (in April 2010, July 2010, Dec. 2011 & July 2012). Domestic & industrial liquid wastes are obviously the cause of contamination of the aquatic compartments of these two areas (S1 & S2). This also leading to the conclusion that multi-marker approach allows to distinguish polluted sites (S1 & S2) from the control ones (S3 & S4) on the basis of their responses. These tools can therefore be integrated in the marine water monitoring strategy of grand Casablanca which can offer a good complement for the chemical analysis methods, & may provide more comprehensive & straightforward information about water pollution risk.

Key words:
Biomarkers; Pernaperna mussels; Spatial variability; Moroccan coastal pollution.


Design and analysis of a heat exchanger; Shaik Abdul Lathuef, Venkata Rameh Mamilla, M.Srinivasulu; Inter. J. Acad. Stud.  2(5):(2016)303-308

Abstract:
A heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another. The media may be separated by a solid wall to prevent mixing or they may be in direct contact. They are widely used in space heating, refrigeration, air conditioning, power plants, chemical plants, petrochemical plants, petroleum refineries, natural gas processing.

Key words:
Design; Analysis; Heat Exchanger; ANSYS.




User login