512 research outputs found
Security of reputation systems
No full textReputation systems have the potential of improving the quality of on-line markets by
identifying fraudulent users and subsequently dealing with these users can be prevented.
The behaviour of participants involved in e-commerce can be recorded and then this information made available to potential transaction partners to make decisions
to choose a suitable counterpart. Unfortunately current reputation systems suffer from various vulnerabilities. Solutions for many of these problems will be discussed.
One of the major threats is that of unfair feedback. A large number of negative or
positive feedbacks could be submitted to a particular user with the aim to either downgrade
or upgrade the user's reputation. As a result the produced reputation does not reflect the user's true trustworthiness. To overcome this threat a variation of Bayesian Reputation system is proposed. The proposed scheme is based on the subjective logic framework proposed Josang et al. [65]. The impact of unfair feedback is countered through some systematic approaches proposed in the scheme.
Lack of anonymity for participants leads to reluctance to provide negative feedback.
A novel solution for anonymity of feedback providers is proposed to allow participants
to provide negative feedback when appropriate without fear of retaliation. The solution is based on several primitive cryptographic mechanisms; e-cash, designated verifier proof and knowledge proof.
In some settings it is desirable for the reputation owner to control the distribution
of its own reputation and to disclose this at its discretion to the intended parties. To
realize this, a solution based on a certificate mechanism is proposed. This solution allows the reputation owner to keep the certificate and to distribute its reputation while not being able to alter that information without detection. The proposed solutions cater for two modes of reputation systems: centralised and decentralised.
The provision of an off-line reputation system is discussed by proposing a new solution
using certificates. This is achieved through the delegation concept and a variant of digital signature schemes known as proxy signatures.
The thesis presents a security architecture of reputation systems which consists of different elements to safeguard reputation systems from malicious activities. Elements incorporated into this architecture include privacy, verifiability and availability. The architecture also introduces Bayesian approach to counter security threat posed by reputation systems. This means the proposed security architecture in the thesis is a combination of two prominent approaches, namely, Bayesian and cryptographic, to provide security for reputation systems. The proposed security architecture can be used as a basic framework for further development in identifying and incorporating required elements so that a total security solution for reputation systems can be achieved
Wartawan terbilang pada tahun 1980an: Saodah Ismail / Nurul Hidayah Roslan ... [et al.]
Get PDFArtikel ini berdasarkan kepada sumber utama iaitu sumber lisan. Artikel ini membicarakan tentang perjalanan dan pengalaman seorang wartawan hiburan di Malaysia dalam bidang kewartawanan dan nama beliau masih lagi dikenali sehingga ke hari ini. Banyak perkara yang dikongsikan dalam artikel ini iaitu Saodah Binti Ismail atau lebih dikenali dengan panggilan Kak Odah. Antaranya, mengenai kisah latar belakang, penglibatan dalam kewartawanan di Malaysia dan pencapaian dan anugerah yang dicapai oleh Puan Saodah Ismail. Kini, beliau merupakan seorang wartawan dan seorang penulis buku sepenuh masa
Anaemia among pregnant women attending the antenatal clinic at the main health centre in Kuala Selangor / Roslan Ismail
Get PDFTranskrip wawancara bersama Encik Mohd Zainudin bin Ismail pelukis komik dan batik / Adyputra Syah Iyman Roslan and Misbahulfalah Harun
Get PDFTemubual ini adalah antara tokoh iaitu Encik Mohd Zainudin Ismail atau Cekeding dan dua pelajar iaitu Adyputra Syah Iyman Bin Rosian dan Misbahulfalah Bin Harun untuk subjek IMR604 iaitu Pendokumentasian Sejarah Lisan. Beliau merupakan salah seorang tokoh Penggiat Seni Lukisan Komik dan Batik. Sejarah lisan adalah satu kaedah yang penting dalam merakam peristiwa lampau yang pernah ditempuhi oleh seseorang itu. Kajian ini menceritakan tentang latar belakang dan sejarah hidup Cekeding atau nama sebenar beliau Mohd Zainudin Ismail sebagai salah seorang penggiat seni lukisan komik dan batik. Beliau merupakan anak jati negeri jelapang padi iaitu Kedah Darul Aman. Beliau mendapat Pendidikan di Sekolah Menengah Tajar, Alor Setar. Beliau juga telah berkecimpung dalam dunia lukisan ini sejak tahun 1993 sehingga sekarang dan masih lagi bergiat aktif. Senarai soalan juga telah disediakan untuk ditanyakan kepada tokoh veteran. Kajian sejarah lisan ini diharapkan dapat membantu orang lain mengenali dan menghargai penggiat seni tanah air kita
Concrete with treated bamboo reinforcement in beam / Nurul Jannah Roslan and Sallehan Ismail
Get PDFThis paper focuses on concrete with treated bamboo reinforcement. It was produced due to the inflated cost of steel reinforcement bars, which use lots of energy to produce the steel reinforcement and expose lots of carbon dioxide to the atmosphere. The aim of this research is to produce concrete with treated bamboo reinforcement in beam as an innovative technology in construction with low cost and use the renewable materials. The objectives of this research are to assemble the prototype from improvised materials of concrete with treated bamboo reinforcement in beam, study its performance, and assess its marketability potential. The methodology involved in this research is data collection from the previous studies
Kepentingan perkembangan kepakaran untuk pengajaran / Mohd Nazri Mohd Noor, Nik Ismail Harun and Roslan Jamaludin
Get PDFKertas kerja ini membincangkan tentang kepentingan perkembangan kepakaran untuk pengajaran dalam dunia pembelajaran di Universiti Teknologi MARA (UiTM). UiTM kini bukan sekadar institusi yang menghasilkan graduan berkualiti malah fungsinya perlu menjangkau lebih daripada itu. Kepakaran pensyarah UiTM sangat diperlukan untuk membantu industri agar bertambah maju dan lebih berdaya saing. Kesan yang akan diperolehi oleh UiTM hasil daripada pelaksanaan kertas kerja ini akan boleh dinikmati untuk jangkamasa panjang khususnya dari aspek pengembangan ilmu. Perkembangan kepakaran berupaya memberikan pulangan yang tinggi terhadap universiti dan mampu menjadi pemangkin kepada aktiviti penyelidikan, penulisan begitu juga dengan penerbitan.
Idea-idea dan kepakaran pensyarah jika digabungjalinkan dengan pengalaman industri pula akan berupaya meningkatkan lagi nilai harga diri pensyarah. Pihak UiTM juga berpeluang untuk mengenal pasti bidang kepakaran yang diperlukan oleh pihak industri seterusnya menggubal kursus di universiti bagi melengkapi keperluan tenaga kerja industri untuk masa hadapan. Usaha sebegini juga akan membantu UiTM menjadi lebih dikenali dan dihormati di mata dunia. Industri pula akan terus menghargai pensyarah dan universiti sebagai sebuah institusi yang mampu mengubah nasib dan masa depan mereka dalam industri masing-masing. Justeru itu, bagi mencapai matlamat tersebut satu direktori khas kepakaran pensyarah perlu diwujudkan sebagai pemangkin untuk jalinan industri dan pensyarah UiTM Pahang
A survey of trust and reputation systems for online service provision
No full textTrust and reputation systems represent a significant trend in decision support for Internet mediated service provision. The basic idea is to let parties rate each other, for example after the completion of a transaction, and use the aggregated ratings about a given party to derive a trust or reputation score, which can assist other pal ties in deciding whether or not to transact with that party in the future. A natural side effect is that it also provides an incentive for good behaviour, and therefore tends to have a positive effect on market quality. Reputation systems can be called collaborative sanctioning systems to reflect their collaborative nature, and are related to collaborative filtering systems. Reputation systems are already being used in successful commercial online applications. There is also a rapidly growing literature around trust and reputation systems, but unfortunately this activity is not very coherent. The purpose of this article is to give an overview of existing and proposed systems that can be used to derive measures of trust and reputation for Internet transactions, to analyse the current trends and developments in this area, and to propose a research agenda for trust and reputation systems. (c) 2005 Elsevier B.V All rights reserved
UMPSA terima kunjungan Ketua Pengarah Kerja Raya
Get PDFPEKAN, 26 Januari 2025 -Universiti Malaysia Pahang Al-Sultan Abdullah (UMPSA) terima kunjungan Ketua Pengarah Kerja Raya, Datuk Wira Ir. Roslan Ismail yang hadir bersama delegasi Jabatan Kerja Raya (JKR) bagi mengukuhkan kerjasama di antara JKR dan UMPSA
Oral health status and treatment needs of the institutionalised elderly population in Melbourne
No full textDeposited with permission of the author. © 1996 Roslan Saub.The purpose of this study was to determine the oral health status and treatment needs of elderly persons living in residential institutions in Melbourne. A total of 175 elderly persons aged 65 years and over were selected from 20 hostels located within a 10 km radius of the Melbourne GPO. A two stage field design was used to collect data. First, subjects were interviewed using a standard questionnaire, then clinical examinations were performed using a fiber optic light, plane mouth mirror, dental probe and periodontal probe. Coronal caries (DMFT), root caries (R-DF), periodontal status (CPITN), denture status, and treatment needs were assessed. The mean age of the subjects was 83.7 (sd 7.2) years. Eighty per cent were female and 20% were male
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