SAMI: Service-Based Arbitrated Multi-Tier Infrastructure for Mobile Cloud Computing

Mobile Cloud Computing (MCC) is the state-ofthe- art mobile computing technology aims to alleviate resource poverty of mobile devices. Recently, several approaches and techniques have been proposed to augment mobile devices by leveraging cloud computing. However, long-WAN latency and trust are still two major issues in MCC that hinder its vision. In this paper, we analyze MCC and discuss its issues. We leverage Service Oriented Architecture (SOA) to propose an arbitrated multi-tier infrastructure model named SAMI for MCC. Our architecture consists of three major layers, namely SOA, arbitrator, and infrastructure. The main strength of this architecture is in its multi-tier infrastructure layer which leverages infrastructures from three main sources of Clouds, Mobile Network Operators (MNOs), and MNOs' authorized dealers. On top of the infrastructure layer, an arbitrator layer is designed to classify Services and allocate them the suitable resources based on several metrics such as resource requirement, latency and security. Utilizing SAMI facilitate development and deployment of service-based platform-neutral mobile applications.Comment: 6 full pages, accepted for publication in IEEE MobiCC'12 conference, MobiCC 2012:IEEE Workshop on Mobile Cloud Computing, Beijing, Chin

Quality teacher nation's aspiration : expectation vs. reality

Education in Malaysia is on-going efforts towards further developing the potential of individuals in a holistic and integrated manner, so as to produce individuals who are intellectually, spiritually, emotionally and physically balanced and harmonic, based on a firm belief in and devotion to God. Such an effort is designed to produce Malaysian citizens who are knowledgeable and competent, who possess high moral standards and who are responsible and capable of achieving high level of personal well-being as well as being able to contribute to the harmony and betterment of the family, the society and the nation at large. Effective teachers are repeatedly listed as fair, democratic, respectful, caring, consistent and good listeners. They are stimulating, creative and confident. They know the students both academically and personally. They have knowledge of what they teach and model strategies of good instruction. However, the quality of teachers in our country is being questioned. The requirements to be a teacher are not standardized. Moreover, there are some of the remark made with regards to our teachers are not very flattering, they have included being "very poor in communication, disinterested in teaching and look down to their peers as well as being of poor quality because the new recruits are that of graduates who were not able to seek employment elsewhere." Over the last 5-8 years, many colleagues have been converted to universities in the country in a bid to improve the "quality of education" and increase the number of degree graduates. What the conversion has managed to do is to successfully increase the number of degree graduates but without being able to significantly improve the quality of education. Hence we are getting diploma graduates masked as degree holders

Teachers' teaching status and achievements of students of teaching and learning of Mathematics and Science in English (PPSMI) in primary and rural secondary schools.

This study is done through observation of the teaching and learning process in classrooms involving 183 Primary School Teachers and 241 Rural Secondary School Teachers. The main objectives of the study are to; (1) measure teachers' teaching status in Science and Mathematics subjects, (2) evaluate students potential in mastering the contents or in Science and Mathematics achievement, and to (3) determine the status of Computer Technology usage cum the teaching support materials in Science and Mathematics subjects. A total of 4410 primary school students and 4946 secondary school students are involved in the study by sitting for two types of Standard Tests for the primary schools, i.e. the Science and Mathematics while in the secondary students' case, 5 types of Standard Tests are implemented, i.e. Mixed Science, Modern Mathematics, Chemistry, Physics and Additional Mathematics. The primary schools are categorized in 7 types of schools, while the secondary schools on the other hand are categorized in 6 types of schools. The results of the study shows that 42.5 percent of primary school teachers and 50.8 percent of secondary school teachers failed in the English Language Proficiency Level Evaluation. This situation is critical as it directly affects the pedagogy and teaching efficiency using English as the teaching medium. The teachers teaching observation status through the researchers shows that the beginning of teacher's teaching is average (min=5.1), interaction between teachers and students are also average (min=5.2), interaction between students and teachers are poor (min=3.8), Computer Technology usage is at average level (min=5.7) and the English Language within teachers are average (min=5.5). Generally, the teachers' teaching status is poor (min=4.9;sp=1.8) and the level of Computer Technology usage as teaching support materials are at average level (min=5.7;sp=1.7). The results of the study shows that the PPSMI teachers possess average competency (min=5.3). The effectiveness in the teaching and learning of Science and Mathematics mainly relies on the teachers' command in the English language. Students in urban schools produced better achievement results compared to the students in rural schools based on 12 tested subjects tested, whereby students in rural schools are left behind in 10 subjects (except in Physics 1 and Chemistry 1) with the average mark difference of between 3.3 to 19.7. Through the whole study, students in secondary schools and primary schools in rural areas are behind in PPSMI

The Most Memorable Characteristics In 20 Famous Logo Designs Among Design Students

The purpose of this paper is to identify the memorable characteristics that appear in some famous logo designs that will be compiled as logo characteristic that are easily to remembered. Logo is used and believed as one of the very significant medium for the introduction of a brand and should be remembered. Gerber (2010) said; one of the important criteria should be considered before logo is been designed is how long it will be remembered. Start with the logo that people will remember then it will become famous; this is approved by Henderson & Cote (1998).The research is using pictorial survey study. The pictorial used is a partial design of the famous logos that have been crop using a simple 2 x 2 matrixes puzzle. The logos are purposely and properly crop into partial design that rids-off the original design. The results that have been captured showed positively that every famous logo come with specific characteristic that make it easily recognizable although it’s not been fully exposed. Therefore, this study starts with 20 famous logos among design students. The result can be acquired for reference by industry for commercial use. This study also directly contributes to the improvement of knowledge, especially in graphic design log

An improved port knocking authentication framework for mobile cloud computing

The latest developments in mobile cloud computing (MCC) have changed user's priorities for computing. However, the change towards MCC brings new challenges to cloud service providers and administrators. Authentication is one among the challenges categorized in the classification of security issues for MCC. Port knocking authentication method eliminates user's collaboration during the authentication process. Thus, such technique has the potential to be applied on the MCC environment which can ensure reliable communication. However, current port knocking authentication techniques lack of addressing the issue of knock-sequence length. It is challenging to deploy appropriate length sequence for port knocking authentication for the reason that shorter length knock sequence degrades security, whereas, deploying longer length sequence involves performance issues in terms of time and buffer management. This paper proposes a dynamic length port knocking authentication framework which addresses the issue of security degradation and optimizes performance in terms of time up and buffer managment. We employ MikroTik RouterOS for the evaluation of the proposed technique. Analysis of the results shows that dynamic length port knocking authentication technique improves performance in terms of time up to 23% and buffer management up to 28% by reducing the imposed load. Furthermore, by deploying dynamic length (DL) and pool of length (PoL), the proposed method reveals high security, which decreases the probability of hacking knock-sequence near to zero for a number of parallel authentication requests. Hence, dynamic length port knocking authentication technique provides an optimal solution for reliable communication in MCC

Directory-based incentive management services for ad-hoc mobile clouds

Mobile cloud computing is envisioned as a promising approach to augment the computational capabilities of mobile devices for emerging resource-intensive mobile applications. This augmentation is generally achieved through the capabilities of stationary resources in cloud data centers. However, these resources are mostly not free and sometimes not available. Mobile devices are becoming powerful day by day and can form a self-organizing mobile ad-hoc network of nearby devices and offer their resources as on-demand services to available nodes in the network. In the ad-hoc mobile cloud, devices can move after consuming or providing services to one another. During this process, the problem of incentives arises for a node to provide service to another device (or other devices) in the network, which ultimately decreases the motivation of the mobile device to form an ad-hoc mobile cloud. To solve this problem, we propose a directory-based architecture that keeps track of the retribution and reward valuations (in terms of energy saved and consumed) for devices even after they move from one ad-hoc environment to another. From simulation results, we infer that this framework increases the motivation for mobile devices to form a self-organizing proximate mobile cloud network and to share their resources in the network

Quality teacher : national aspiration to develop human capital for a knowledge-based economy

Teaching is one of the most challenging and one of the most important jobs in our society. Teachers play the role of producing knowledgeable students with good personality. Quality of a teacher is the most important school-related factor influencing student achievement. In order to solve the problems of shortage of teachers, government had recruited many teachers with different qualification. Government should make sure that the teachers meet the minimum requirement before letting them to enter the education field. We should not only focus on the quantity and neglect the quality of the teachers. Qualities of teachers should be measured from five categories which had stated in the National Education Philosophy- Physical, emotion, spiritual, intellectual and social. Physically healthy, high emotional intelligence, high spirituality, high intellectual and good social skills are the criteria of a quality teacher. Test should be conducted based on these aspects, such as IQ test for intellectual and EQ test for emotion, to determine the quality of a teacher. Only those who achieve good results in all these aspects are considered as a quality teacher. Better pay as well as promotion should be given to them

Effectiveness of the selected techniques in enhancing the achievement in science among the children with learning disabilities: sharing experiences

In national perception, education is essentially for all. This is fundamental to all-round development, material and spiritual. It refines sensitivities and perceptions that contribute to national cohesion, a scientific temper and independence of mind and spirit-thus furthering the goals of socialism secularism and democracy enshrined in our constitution. The objective of the study focuses on achievement of children with learning disability in science. There are 5 null hypothesis tested in this research. The sample used in this study includes 35 children with learning disabilities in experimental group and 42 children with learning disabilities in control group. The different views taken on special education have ignited spark of controversies over segregating some children from the mainstream and providing them with extra opportunities. There are arguments for and against both special education and integrated education. Special education means the specifically designed instruction that meets the unusual needs of special children. It requires special materials, teaching, techniques, equipment and facilities. The design was an experimental research pre and post-test equivalent group. The research shows that there is no significant difference in all learning objective such as knowledge, comprehension and skill between control group and experimental group in the pre-test. This two sample groups also did not show any significant difference in the pre-test irrespective of gender, educational qualification of the teacher, years of experience of the teacher, parents' education, parents' profession, parents income, type of management and type of school. On the other hand, for the post-test all the characteristics show that there are significant differences. This shows that there are effects on the treatment group in learning objective. Furthermore the experimental group showed significantly higher gain score than the control group with regard to the learning objective which comprises of knowledge, comprehension, application and skill

The impact of electronic communication technology on written language

Communication technology is changing things. Language is no exception. Some language researchers argue that language is deteriorating due to increased use in electronic communication. The present paper investigated 100 randomly selected electronic mails (e-mails) and 50 short messaging system (SMS) messages of a representative sample of international students in University Putra Malaysia (UPM) to find out the impact of these two specific modes of electronic communication on written language use. The e-mails from UPM International Students Association (UPM-ISA) yahoo group were content analyzed. A non-probability convenience sampling was used to select the 50 short message services sent to the researcher about different subject matters by Malaysian and international students at UPM. Then, they were also content analyzed. The results indicated that the language used in students’ e-mails and SMS messaging was full of spoken-like spelling, unconventional use of punctuation and abbreviations, and ungrammatical sentences. However, the more in-depth content analysis of the data revealed that the written language is being creatively adapted, developed, and enhanced to suit the conditions of the electronic communication age. Syntactical and lexical reductions are just strategies used to reduce effort, time and space