5,683 research outputs found
State-of-the-art on evolution and reactivity
This report starts by, in Chapter 1, outlining aspects of querying and updating resources on
the Web and on the Semantic Web, including the development of query and update languages
to be carried out within the Rewerse project.
From this outline, it becomes clear that several existing research areas and topics are of
interest for this work in Rewerse. In the remainder of this report we further present state of
the art surveys in a selection of such areas and topics. More precisely: in Chapter 2 we give
an overview of logics for reasoning about state change and updates; Chapter 3 is devoted to briefly describing existing update languages for the Web, and also for updating logic programs;
in Chapter 4 event-condition-action rules, both in the context of active database systems and
in the context of semistructured data, are surveyed; in Chapter 5 we give an overview of some relevant rule-based agents frameworks
Complex Event Processing (CEP)
Event-driven information systems demand a systematic and automatic processing of events. Complex Event Processing (CEP) encompasses methods, techniques, and tools for processing events while they occur, i.e., in a continuous and timely fashion. CEP derives valuable higher-level knowledge from lower-level events; this knowledge takes the form of so called complex events, that is, situations that can only be recognized as a combination of several events. 1 Application Areas Service Oriented Architecture (SOA), Event-Driven Architecture (EDA), cost-reductions in sensor technology and the monitoring of IT systems due to legal, contractual, or operational concerns have lead to a significantly increased generation of events in computer systems in recent years. This development is accompanied by a demand to manage and process these events in an automatic, systematic, and timely fashion. Important application areas for Complex Event Processing (CEP) are the following
Penghasilan dan penilaian video pembelajaran (CD) bagi mata pelajaran Prinsip Ekonomi (BPA 1013) bertajuk permintaan dan penawaran di KUITTHO
Kajian ini dijaiankan untuk meniiai keberkesanan sebuah video pembeiajaran
(CD) mata peiajaran Prinsip Ekonomi (BPA 1013) bertajuk Permintaan dan Penawaran.
Bagi tujuan tersebut, sebuah video pembelajaran telah dihasilkan membantu pelajar
bagi memahami mata pelajaran berkenan semasa proses pengajaran dan pembelajaran
berlaku. Video pembelajaran yang dihasilkan ini kemudian dinilai dari aspek proses
pengajaran dan pembelajaran, minat dan persepsi responden terhadap ciri-ciri video
(audio dan visual). Seramai 60 orang pelajar semester 2 Sarjana Muda Sains
Pengurusan di Kolej Universiti Teknologi Tun Hussein Onn telah dipiih bagi membuat
penilaian kebolehgunaan produk ini sebagai alat bantuan mengajar di dalam kelas.
Semua data yang diperolehi kemudiannya dikumpulkan bagi dianalisis dengan
menggunakan perisian "SrarMfKM/ Pac/rageybr Rocaj/ Sb/'eace " (SPSS). Hasil dapatan
kajian yang dilakukan jelas menunjukkan video pengajaran yang dihasilkan dan dinilai
ini amat sesuai digunakan bagi tujuan memenuhi keperluan proses pengajaran dan
pembelajaran subjek ini di dalam kelas
Reactivity on the Web
Reactivity, the ability to detect simple and composite events and respond in a timely
manner, is an essential requirement in many present-day information systems. With
the emergence of new, dynamic Web applications, reactivity on the Web is receiving
increasing attention. Reactive Web-based systems need to detect and react not only
to simple events but also to complex, real-life situations. This paper introduces
XChange, a language for programming reactive behaviour on the Web, emphasising
the querying of event data and detection of composite events
Feeds as Query Result Serializations
Many Web-based data sources and services are available as feeds, a model that
provides consumers with a loosely coupled way of interacting with providers.
The current feed model is limited in its capabilities, however. Though it is
simple to implement and scales well, it cannot be transferred to a wider range
of application scenarios. This paper conceptualizes feeds as a way to serialize
query results, describes the current hardcoded query semantics of such a
perspective, and surveys the ways in which extensions of this hardcoded model
have been proposed or implemented. Our generalized view of feeds as query
result serializations has implications for the applicability of feeds as a
generic Web service for any collection that is providing access to individual
information items. As one interesting and compelling class of applications, we
describe a simple way in which a query-based approach to feeds can be used to
support location-based services
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