21 research outputs found
Symbolic manipulations related to certain aspects such as interpretations of graphs
This thesis describes an investigation into university students' manipulation of
symbols in solving calculus problems, and relates this to other aspects such as
drawing and interpretation of graphs. It is concerned with identifying differences
between students who are successful with symbol manipUlation and those who are
less successful.
It was initially expected that the more successful would have flexible and efficient
symbolic methods whilst the less successful would tend to have single procedures
which would be more likely to break down. Krutetskii (1976) noted that more
successful problem-solvers curtail their solutions whilst the less able are less likely to
acquire that ability even after a long practice. This suggested a possible correlation
between success and curtailment. An initial pilot study with mathematics education
students at a British University showed that in carrying out the algorithms of the
calculus, successful students would often work steadily in great detail, however, they
were more likely to have a variety of approaches available and were more likely to
use conceptual ideas to simplify their task. However, the efficiency in handling
symbolic manipulation may not be an indication that the students are able to relate
their computational outcome to graphical ideas.
A modified pilot test was trialed at the Universiti Teknologi Malaysia before a main
study at the same university in which 36 second year students were investigated in
three groups of twelve, having grades A, B, C respectively in their first year
examination.
The findings of this research indicate that there is no significant correlation between
ability and curtailment, but ability correlates with conceptual preparation of
procedures where there is an appropriate simplification to make the application of the
algorithm simpler. The more able students may have several flexible strategies and
meaningful symbolic mathematical representations but these may not always relate to
visual and graphical ideas. On the other hand the less able students are less likely to
break away from the security of a single procedure and liable to breakdown in getting
the solutions for the calculus problems
The expectation requirement prospective in fulfill industries needs in technical skills among vocational students (TVET).
The investigation of the research is based on the expectation prospective requirement that’s needs to acquire among vocational students in University Tun Hussein On Malaysia (UTHM) The main objective is to observe the prospective students and establishment of foundation understanding that they need to fulfill the expectation of the industries. This is to ensure that they are well preparing in workplace in the future time. To achieve this by doing so is by implementation of phenomenological research method .From the experimental procedure is base from students prospective and by conducting questionnaire and interview. From these results, it can be conclude that students need more influence of self-establishment as they need to be ready entering in the industries of vocational
A heuristics approach for classroom scheduling using genetic algorithm technique
Reshuffling and arranging classroom based on the capacity of the audience, complete facilities, lecturing time and many more may lead to a complexity of classroom scheduling. While trying to enhance the efficiency in classroom planning, this paper proposes a heuristic approach for timetabling optimization. A new algorithm was produced to take care of the timetabling problem in a university. The proposed of heuristics approach will prompt a superior utilization of the accessible classroom space for a given time table of courses at the university. Genetic Algorithm through Java programming languages were used in this study and aims at reducing the conflicts and optimizes the fitness. The algorithm considered the quantity of students in each class, class time, class size, time accessibility in each class and lecturer who in charge of the classes
A non-classical optimal control problem
We consider another non-classical of optimal control problem that is spurred by some current research on the nonlinear income issue in the field of financial matters. This class of issue can be set up as a maximizing issue in the area of Optimal Control. In any case, the state value at the final fixed time, y(T), is priori unknown and the integrand is an element of the unknown y(T). This is a non-classical optimal control problem. In this paper we apply the new costate value conditions p(T) in the definition of the optimal control problem. We solve some examples in this issue using the numerical shooting method to illuminate the subsequent Two Point Boundary Value Problem (TPBVP) and join the free y(T) as an additionally unknown. Basically similar outcomes are obtained through the nonlinear programming (NP) discrete-time results
Symbols and the bifurcation between procedural and conceptual thinking
Symbols occupy a pivotal position between processes to be carried out and concepts to be thought about. They allow us both to d o mathematical problems and to think about mathematical relationships.
In this presentation we consider the discontinuities that occur in the learning path taken by different students, leading to a divergence between conceptual and procedural thinking. Evidence will be given from several different contexts in the development of symbols through
arithmetic, algebra and calculus, then on to the formalism of axiomatic mathematics. This is taken from a number of research studies recently performed for doctoral dissertations at the University of Warwick by students from the USA, Malaysia, Cyprus and Brazil, with data collected
in the USA, Malaysia and the United Kingdom. All the studies form part of a broad investigation into why some students succeed yet others fail
A Non-Classical Optimal Control Problem
We consider another non-classical of optimal control problem that is spurred by some current research on the nonlinear income issue in the field of financial matters. This class of issue can be set up as a maximizing issue in the area of Optimal Control. In any case, the state value at the final fixed time, y(T), is priori unknown and the integrand is an element of the unknown y(T). This is a non-classical optimal control problem. In this paper we apply the new costate value conditions p(T) in the definition of the optimal control problem. We solve some examples in this issue using the numerical shooting method to illuminate the subsequent Two Point Boundary Value Problem (TPBVP) and join the free y(T) as an additionally unknown. Basically similar outcomes are obtained through the nonlinear programming (NP) discrete-time results
Forecasting natural rubber price in Malaysia using Arima
This paper contains introduction, materials and methods, results and discussions,
conclusions and references. Based on the title mentioned, high volatility of the price of
natural rubber nowadays will give the significant risk to the producers, traders, consumers,
and others parties involved in the production of natural rubber. To help them in making
decisions, forecasting is needed to predict the price of natural rubber. The main objective of
the research is to forecast the upcoming price of natural rubber by using the reliable statistical
method. The data are gathered from Malaysia Rubber Board which the data are from January
2000 until December 2015. In this research, average monthly price of Standard Malaysia
Rubber 20 (SMR20) will be forecast by using Box-Jenkins approach. Time series plot is used
to determine the pattern of the data. The data have trend pattern which indicates the data is
non-stationary data and the data need to be transformed. By using the Box-Jenkins method,
the best fit model for the time series data is ARIMA (1, 1, 0) which this model satisfy all the
criteria needed. Hence, ARIMA (1, 1, 0) is the best fitted model and the model will be used
to forecast the average monthly price of Standard Malaysia Rubber 20 (SMR20) for twelve
months ahead
A Mathematical Study on “Additive Technique” Versus “Branch and Bound Technique” for Solving Binary Programming Problem
A solid body needs adequate supplements from nourishment that we eat each day. Eating pretty much than what our body needs will prompt lack of healthy sustenance (under-nourishment and over-nourishment).In Malaysia, a few reviews have been directed to examine the wholesome status of Malaysians, particularly among youngsters and youths.However there are different methods for taking care of the menu arranging issue and in this paper Binary Programming (BP) is executed. Separately, "Additive Technique (AT)" and "Branch and Bound Technique (BBT)" are utilized as a part of BP.Both methodologies utilize diverse systems and might yield distinctive ideal arrangements. Along these lines, this study expects to build up a scientific model for eating regimen arranging that meets the essential supplement admission and look at the outcomes yield through additive substance and branch and bound methodologies. The information was gathered from different all inclusive schools and furthermore from the Ministry of Education. The model was illuminated by utilizing the Balas Algorithm through AT and Binary Programming through BBT. © 2018 Institute of Physics Publishing. All rights reserved
Applied Mathematical Optimization Technique on Menu Scheduling for Boarding School Student Using Delete-Reshuffle-Reoptimize Algorithm
Boarding school student needs to eat well balanced nutritious food which includes proper calories, vitality and supplements for legitimate development, keeping in mind the end goal is to repair and support the body tissues and averting undesired ailments and disease.Serving healthier menu is a noteworthy stride towards accomplishing that goal.Be that as it may, arranging a nutritious and adjusted menu physically is confounded, wasteful and tedious.This study intends to build up a scientific mathematical model for eating routine arranging that improves and meets the vital supplement consumption for boarding school student aged 13-18 and in addition saving the financial plan.It likewise gives the adaptability for the cook to change any favoured menu even after the ideal arrangement has been produced.A recalculation procedure will be performed in view of the ideal arrangement.The information was gathered from the the Ministry of Education and boarding schools' authorities.Menu arranging is a notable enhancement issue and part of well-established optimization problem.The model was fathomed by utilizing Binary Programming and "Delete-Reshuffle-Reoptimize Algortihm (DDRA)"
A mathematical model development for the lateral collapse of octagonal tubes
. Many researches has been done on the lateral collapse of tube. However, the previous researches
only focus on cylindrical and square tubes. Then a research has been done discovering the collapse
behaviour of hexagonal tube and the mathematic model of the deformation behaviour had been developed
[8]. The purpose of this research is to study the lateral collapse behaviour of symmetric octagonal tubes and
hence to develop a mathematical model of the collapse behaviour of these tubes. For that, a predictive
mathematical model was developed and a finite element analysis procedure was conducted for the lateral
collapse behaviour of symmetric octagonal tubes. Lastly, the mathematical model was verified by using the
finite element analysis simulation results. It was discovered that these tubes performed different
deformation behaviour than the cylindrical tube. Symmetric octagonal tubes perform 2 phases of elastic -
plastic deformation behaviour patterns. The mathematical model had managed to show the fundamental of
the deformation behaviour of octagonal tubes. However, further studies need to be conducted in order to
further improve on the proposed mathematical mode