20 research outputs found
Important criteria for measuring heritage building condition
No full textThe excellence condition of a heritage building lies not only in the appearance of its individual elements, but also in the integrity of all its components, considered as unique criteria of the specific construction technology of its time and place. However, these criteria are varied and not specific. Therefore, this study aimed to identify and rank the important criteria for measuring the condition of heritage buildings in Malaysia. Data obtained through questionnaire and analyzed using Average Index (AI) in order to establish the important criteria. Samples were selected from a panel of experts in the field of heritage buildings management including industry players and academicians. The established criteria will be used as components to develop a new method of heritage building condition determination model in Malaysia
Use of new efficient lossless data compression method in transmitting encrypted baptista symmetric chaotic cryptosystem data
No full textA new compression algorithm used to ensure a modified Baptista symmetric cryptosystem which is based on a chaotic dynamical system to be applicable is proposed. The Baptista symmetric cryptosystem able to produce various ciphers responding to the same message input. This modified Baptista type cryptosystem suffers from message expansion that goes against the conventional methodology of a symmetric cryptosystem. A new lossless data compression algorithm based on theideas from the Huffman coding for data transmission is proposed.This new compression mechanism does not face the problem of mapping elements from a domain which is much larger than its range.Our new algorithm circumvent this problem via a pre-defined codeword list. The purposed algorithm has fast encoding and decoding mechanism and proven analytically to be a lossless data compression technique
Reconstructing applicable chaotic Baptista-type symmetric cryptosystem
No full textThis work, introduces a method to repair a cryptosystem based on a chaotic
dynamical system. Baptista exploited the chaotic property of the logistic equation
f(x) = b x (1 - x) to develop a cryptosystem. This cryptosystem has the ability to
produce various ciphers responding to the same message input. Alvarez through his
one-time pad attack successfully attacked the Baptista cyptosystem. Ariffin
attempted to modify the cryptosystem to enhance the security of the original
Baptista’s cryptosystem. Rhouma identified a flaw in the method Ariffin put forward,
specifically in step 4 of the encryption procedure, where it does not implement a oneto-
one operation resulting in failure to decrypt the ciphertext. The method is based on
the Fractal and Iterated System (IFS), where an in-depth study on Fractal, Chaos and
Cryptography is needed to assist in actualizing the research objectives. The algorithm
is developed to counter the one-time pad attack. This recommended encryption
algorithm also overcomes the flaw in Ariffin’s encryption procedure. The modified
Baptista type cryptosystem suffers from message expansion that goes against the
conventional methodology of a symmetric cryptosystem. As a result, we studied the
idea of Huffman encoding. We then designed a new compression algorithm
developed using ideas from the Huffman coding. Finally, the compression algorithm
is applied onto the modified Baptista cryptosystem to show a possible practical
deployment of the Baptista cryptosystem and to also produce better compression
ratio
Perancangan Pembahagian Harta Semasa Hidup dalam Islam: Konsep dan Kepentingannya
No full textPerancangan terhadap pembahagian harta
semasa hidup adalah aspek yang harus
dipraktikkan dengan lebih meluas. Melalui
perancangan pembahagian harta ia mampu
menjaga kepentingan pemilik dan bakal
penerima-penerima harta sama ada semasa hidup
mahupun selepas kematian. Memahami dasar
perancangan pembahagian harta berasaskan
al-Quran dan hadis mampu memberi panduan
kepada orang Islam dalam memahami keperluan
dan kepentingan merancang harta semasa
hidup. Oleh itu, artikel ini akan mengupas
antaranya konsep perancangan harta semasa
hidup, kedudukan dan nilai-nilainya dalam
Islam dan kepentingannya. Melalui kupasan
tersebut, ia mampu memberikan impak
terhadap pembahagian harta orang Islam yang
seharusnya melihat aspek perancangan semasa
hidup adalah sesuatu yang amat penting untuk
dipraktikkan dengan lebih meluas. Apatah lagi
dengan pelbagai isu yang berlaku berkaitan
pembahagian harta di kalangan orang Islam
pada masa kini yang memerlukan kepada
penyelesaian secara komprehensif dan
sistematik. Di akhir penulisan ini, penulis
menerangkan bahawa melalui perancangan
pembahagian harta yang dibuat semasa hidup
tanpa perlu menunggu kepada kematian mampu
untuk mengurangkan beberapa permasalahan
yang berlaku di kalangan orang Islam berkaitan
dengan soal pembahagian harta
On the efficiency of the image encryption and decryption by using logistic-sine chaotic system and logistic-tent chaotic system
No full textAn evaluation of students’ performance in poster presentations using fuzzy evaluation method / Khairu Azlan Abd Aziz ... [et al.]
No full textPoster presentation encompasses many elements such as the organization of poster, the content related to the title proposed, the appearance and the written word. Usually, the poster presentation is used as a platform for student to present their final year project or any other competitions. Students will be evaluated based on the criteria that meets the requirements proposed by the panels or judges. However, their performance in poster presentations does not provide the suitable techniques to estimate the actual value since it involves the elements of fuzziness. In this study, the fuzzy evaluation technique will be applied to measure the performance of the poster presentation. The motivation behind poster presentation is to determine the performance of students using fuzzy evaluation method. The objective of this study is to compare the results between using conventional method and fuzzy evaluation method. The method consists of normalizing the marks, developing the graph of fuzzy membership function, calculating the degree of satisfaction, and finalizing the actual marks. We believed that the result from this study could be able to measure the better output with the consideration of linguistic terms includes excellent, good, moderate, satisfactory, and so on. This method also can be an alternative way to evaluate the performance of the poster presentation
Difficulties experience by Science Foundation students on basic Mendelian Genetics topic: A preliminary study
No full textThis paper aims to report and identify the difficulties experienced by Science Foundation students in understanding basic Mendelian Genetics based on their ability to solve three types of basic Mendelian Genetics problems. The problems given are; a monohybrid cross and two dihybrid cross cases. Result shown that 52.6% students were able to solve all the given problems while another 47.4 % had difficulties to solve at least one of the given problems. Among the students that had difficulties to solve the given problems, 4.4% students had difficulties to solve Type 1 problem, 13.3% students had difficulties to solve Type 2 problem, 15.6% students had difficulties to solve Type 3 problem, 8.9% students that had difficulties to solve both Type 1 and 3 problems, 40% students had difficulties to solve both dihybrid cross Type 2 and 3 problems, and 17.8% students were unable to solve all the given problems. E(X) or number of questions that the Science Foundation students had difficulties to solve is 0.874. The standard deviation for number of questions that the Science Foundation students had difficulties to solve is 1.842. In solving basic Mendelian Genetics problems, we expected students were able to solve the problems given and also can clarify the techniques used in term of genetic context. The initial finding reported in this study may be used to have a better understanding on students' ability and problem solving skills in learning genetics
RHA_SSA: partial cement replacement in green concrete / Nuraini Tutur ... [et al.]
No full textSludge is an unavoidable product of wastewater treatment and creates problems of disposal. For highly urbanized cities, sludge disposal by land filling might not be appropriate due to limitation of land. Using RHA_SSA for this study will encourage Malaysia to build more low carbon and sustainable building construction. Finding more alternative materials in enrich concrete structure and at the same time promoting the environmental sustainability is a must for Malaysia as developing country with increasing number of infrastructures built throughout the year. This research had been studied the effect of partial replacement of cement by Sewage Sludge Ash (SSA) and Rice Husk Ash (RHA). The effects on the nature of concrete exhibited mechanical properties of concrete such as compressive strength, water absorption, from a combination of sewage sludge ash and rice husk ash at different proportions. There were 108 samples had been prepared at different percentages of replacement of cement by using sewage sludge ash and rice husk ash. RHA_SSA are used as partial replacement of cement for 10%, 20%, 30%, 40% and 50% in the concrete. The samples had been tested with compressive test. From the results, initially, there was an increment compressive strength of concrete at 10% amount replacement SSA and RHA, but the compressive strength declined when the amount replacement SSA and RHA are developing more than 10%. In addition, the concrete also showed increasing of compressive strength within the additional curing period, which was 7 days, 14 days and 28 days. Therefore, there is potential to reuse this waste material as part of construction materials and for future researches in minimization of waste
Effectiveness of problem-based learning approach in mathematics subject among lower secondary students of SMK Usukan, Kota Belud, Sabah
No full textProblem-based learning (PBL) methods are being used widely amongst teachers and lecturers to educate students in Science, Technology, Engineering and Mathematics (STEM) related programs in higher secondary and tertiary levels. This project was done as an effort to redeem STEM education due to the declining number of students in STEM related subjects in higher secondary schools as well as in university levels. Thus, a total of 74 students from Form 1 and Form 2 in SMK Usukan, Kota Belud have participated in this study. A structured questionnaire focusing on learning, teaching and communication skills was given to the students and the results were analyzed. Based on the questionnaire, the mean value range of 5.30 - 5.73 and standard deviation value range of 0.50 – 0.76 was obtained respectively. It shows that this pre-experimental project suggested that the learning approach using problem-based learning was effective in terms of students understanding in learning, teaching, and promoting good social skills (communication, and teamwork skills) among the students
