Kathiresan Gopal

Universiti Putra Malaysia | UPM · Institute of Mathematical Research

This paper discussed the relationship between angle and the value PvGRF for the execution of parachute landing. The value of PvGRF has been determined by using mathematical modelling principle of conservation of energy. The mathematical model describes the correlation between peak vertical ground reaction force and drop height. The peak vertical gr...

Since the first coronavirus disease 2019 (COVID-19) outbreak appeared in Wuhan, mainland China on December 31, 2019, the geographical spread of the epidemic was swift. Malaysia is one of the countries that were hit substantially by the outbreak, particularly in the second wave. This study aims to simulate the infectious trend and trajectory of COVI...

This study identifies the success indicators of mathematical problem-solving performances among Malaysian matriculation students divided into four indicators: mathematical beliefs, mathematics attitudes, mathematics self-efficacy and metacognitive skills. For this purpose, 368 matriculation students from three matriculation colleges were selected a...

Epidemiological models play a vital role in understanding the spread and severity of a pandemic of infectious disease, such as the COVID-19 global pandemic. The mathematical modeling of infectious diseases in the form of compartmental models are often employed in studying the probable outbreak growth. Such models heavily rely on a good estimation o...

This paper attempted to ascertain the levels of self-efficacy and anxiety of mathematics among upper secondary students in Malaysia. A descriptive survey study was conducted with 842 secondary students. Instrument consisted of 29 attributes. Attributes' ratings were analysed using Fuzzy Conjoint Analysis (FCA). Results attested that students' mathe...

Statistics has become more important in today's world due to the emergence of big data. Accordingly, introductory statistics course plays the role of precursor to data science. However, learning of statistics has become difficult to Malaysian undergraduate students. In line with that, this paper evaluated the perceptions of learning statistics amon...

Credit scoring is an important tool used by financial institutions to correctly identify defaulters and non-defaulters. Support Vector Machines (SVM) and Random Forest (RF) are the Artificial Intelligence techniques that have been attracting interest due to their flexibility to account for various data patterns. Both are black-box models which are...

This study examined the effectiveness of implementing a problem-based learning (PBL) strategy on the mathematical values of the mathematics secondary school. A quasi-experimental nonrandomized control group post-test design was conducted, which consisted of 62 students in two intact groups. 35 students were placed in the experimental group, while 2...

The conventional teaching methods for statistics, especially for introductory statistics course (precursor to data science) are not in accordance with the advancement and demand of today's data-centric world. As the backbone of modern data science, computational statistics is deemed to revamp the learning of statistics to a large extent. As such, t...

In recent years, introductory statistics has become a necessary course for Malaysian undergraduates, especially for those enrolled in non-mathematics/statistics oriented programmes. This is in line with the rapid growth of data science (and big data). However, most undergraduates’ interest to learn statistics declined and resulted in the ineffectiv...

This paper aims to study the eectiveness of using RStudio (an open source statistical package) in learning statistics among undergraduate students in Malaysia. A pre-post test quasi-experimental with control group design was employed. This study was conducted on 50 rst year students from various elds of study taking the Statistics for Applied Scien...

As Malaysia strives to embrace the Data Science & Big Data revolution, the need to produce graduates with higher mathematics competence grows accordingly. However, the nation's vision may face a threat due to the declining interest to learn mathematics among the younger generations. Although initiatives like STEM was undertaken to face this issue,...

The box plot has been used for a very long time since 70s in checking the existence of outliers and the asymmetrical shape of data. The existing box plot is constructed using ve values of statistics calculated from either the discrete or continous data. Many improvement of box plots have deviated from the elegant and simplier approach of explorator...

The aim of this paper was to determine students' statistics engagement level in an experiential statistics learning process with RStudio (an open-source statistical package) in a Malaysian public university. A descriptive quasi-experimental with control group design was employed. This study was conducted on 50 first year students enrolled in variou...

Undergraduate students' statistics engagement plays a vital role in their performance in introductory statistics courses. Self-efficacy and attitudes towards statistics were claimed to influence students' engagement. Accordingly, this study investigated the influence of self-efficacy and attitudes towards statistics on undergraduate students' stati...

Big Data and Data Science are the most frequent words, one can hear on a daily basis in today’s world, indicating the rapid growth and importance of these fields. As statistics forms the fundamentals of data science, more graduates are expected to acquire statistical knowledge and skills to become key players in the nations’ initiatives and needs p...

Students’ self-efficacy is the belief about their capabilities to learn and said to have control over thoughts, feelings and actions. Self-efficacy is one of the important factors influencing statistics engagement. This paper aims to show the influence of statistics self-efficacy towards statistics engagement among undergraduate students taking Sta...

This paper aims to study the influence of attitudes towards statistics on statistics engagement among undergraduate students in a Malaysian public university. This study was conducted on first-year students from various fields of study and specialization taking an introductory statistics course during Semester 1 in 2016/2017. A random sample consis...

The principal photosynthetic pigment of chlorophyll (chl-a) in the water is produced by phytoplankton and its concentration (CC) is the biomass and abundance indicator of phytoplankton. The small pelagic fishes which feed on phytoplankton is one of the dominant groups caught in Malaysia. The typical challenge in fisheries is to identify a fruitful...

Gold has a long history in trading over the past decades until its role in trading was replaced by the introduction of banknotes and coins. Gold is undeniably one of the prime commodities in investments and as well as a hedging tool. Thus, it is important to study the fluctuation in monthly gold price in Malaysia to extract useful information that...

University rankings are becoming a vital performance assessment for higher learning institutions worldwide. Besides the overall rankings, the universities are also ranked by subjects serving as comprehensive guide to discover the specialist strengths of universities worldwide by highlighting top 200 universities for a range of 30 individual popular...