Creating a good quality Adaptive Educational Hypermedia (AEH) system involves a great expenditure of time, effort and money, especially to author the materials in order to implement adaptivity. Moreover, authoring AEH...
详细信息
ISBN:
(纸本)1595934537
Creating a good quality Adaptive Educational Hypermedia (AEH) system involves a great expenditure of time, effort and money, especially to author the materials in order to implement adaptivity. Moreover, authoring AEH systems is as hard as maintaining them. Furthermore, with the new advances in AEH development, the authored content in a given system can become outdated very rapidly. When the massive overhead in authoring is combined with the possibility of the current AEH system becoming unavailable due to lack of maintenance, providing interoperability of adaptive systems becomes necessary. This paper describes our research on providing interoperability of user models between different AEH systems via a one-to-one conversion between two AEH systems, MOT and WHURLE. Here, we identify the differences and commonalities and address how these influence the efficiency of the conversion of the two systems' user models. Although this conversion is done via simple peer-to-peer interaction, it can be easily extended to make use of semantic web technologies, as for example RDF or XML conversion formats, or web services for user model exchange. Therefore, we consider that our work on feature extractions sets the basis for such conversions for the Web and Semantic Web. Copyright 2006 ACM.
The development of computerengineering and communication technology has helped learners and researchers to find and gather information using different methods like internet and computer Medias. The learning process i...
详细信息
The development of computerengineering and communication technology has helped learners and researchers to find and gather information using different methods like internet and computer Medias. The learning process is not limited by one place or time. Mobile phones mobility allows using handset devices in order to achieve ubiquitous learning. Mobile phones are used by all generations;young and old people, and the short message service SMS is wide spread because of the low cost and ease of use. This has made employing the mobile phones with SMS easy to enable the learners and get information and knowledge every where and any time. Learners who visit museums or parks like to learn about the contents easily and keep the information they acquire for long time. So our system enables the learner to do that by SMS query. The leaner send the number of any item to central phone number (server number) then he receives the answer in short time and low cost. The architecture of the system depends on the SMS architecture in the second generation mobile phones and GSM. An extended architectures iSMS and NCTU-SMS were used to achieve good transmission time and low cost. The time for the SMS learning process is determined by the sending and receiving time with additional parameter for the delay. The learner can use this system when he makes a registration due to security function. Such a system is built in wide areas as large parks or historical, religious and natural places.
Brainstorming was first introduced by Osborn to promote group creativity in design work [1]. For many years, this methodology has been proven useful and effective for promoting the outcome of group creativity. The obj...
详细信息
Brainstorming was first introduced by Osborn to promote group creativity in design work [1]. For many years, this methodology has been proven useful and effective for promoting the outcome of group creativity. The objective of this paper is to investigate how a networking environment affects group creativity and associated creative thinking activity. We believe that, traditional activities are strengthened by the use of informationtechnology. In this paper, a web-based brainstorming system is introduced. It is based on the Internet which provides a multi-dimensional forum to support brainstorming activity. This system has session facilitation and management unit, a multimedia supporting unit, an expert assessment unit, and a knowledge management unit. With the assistant of informationtechnology, the quality and quantity of ideas generated during traditional and networked activity is compared and discussed. An experiment was conducted and the results showed that the uniqueness and usefulness of ideas generated during networked activity is superior to those generated in a more traditional manner. The quantity of ideas was also increased using networking.
Automatic comparative molecular modelling of viral coat protein performs the homology modelling in different steps. Protein sequence of Capsid protein (Cucumber mosaic virus strain As) shows identify homologous protei...
详细信息
Automatic comparative molecular modelling of viral coat protein performs the homology modelling in different steps. Protein sequence of Capsid protein (Cucumber mosaic virus strain As) shows identify homologous proteins with known 3D structures by using PSI-BLAST i.e. it shows similarity with capsid protein from Cucumber mosaic virus (strain fny). Through analysis we got Nucleoplasmin-like viral coat protein as a potential template through a very convenient user interface for target selection. Bioinformatics software tools can reveal in formation on many aspect of protein structure and function, such as protein interaction expression pattern, surface activity, binding sites, and electrostatic potentials. Study focused on computational approach to deciphering the sequence similarity, molecular modeling and their function of coat protein of cucumber mosaic virus (strain fny). The data generated from these assay is subsequently added to a searchable database that allows potential drug targets to identify.
This paper presents an approach to resolve the problem of authoring and interchanging educational material, based on web services. Here we describe the ultimate goal, of reusing and interchanging freely adaptive eleam...
详细信息
Enhancement of laser energy absorption has been demonstrated by pulse laser ablation of solid target whose surface was intentionally roughened. We have studied pulse laser ablation of roughened surface of ground glass...
Enhancement of laser energy absorption has been demonstrated by pulse laser ablation of solid target whose surface was intentionally roughened. We have studied pulse laser ablation of roughened surface of ground glass surface by focusing a laser pulse through transparent plate from rear side. Ablation process has been observed by high speed framing camera. Burst of small fragments of glass has been observed in the present experiment. By using ns‐duration Nd:YAG laser of around 100 mJ per pulse, observed peak velocity of glass particle cloud ranges 0.5 km/s to 1.5 km/s. SEM observation of the ground glass surface revealed that virgin glass surface is covered with plenty of micro cracks, while cleavage surface structure has been evidenced in the damaged surface area.
Zooming reasoning systems is a mechanism for reasoning using granular computing. The key concept of the zooming reasoning system is focus, which represents sentences we use in the current step of reasoning. Murai et a...
Zooming reasoning systems is a mechanism for reasoning using granular computing. The key concept of the zooming reasoning system is focus, which represents sentences we use in the current step of reasoning. Murai et al. has proposed a three‐valued valuation based on focus. On the other hand, the authors have proposed another concept of granularity, called visibility, and constructed a four‐valued truth valuation based on visibility and focus. However, our formulation of the four‐valued valuation causes some difficulties to extend to all non‐modal sentences. In this paper, we explore and refine connections between granular reasoning and semantics of four‐valued logic. In particular, we refine the four‐valued semantics based on visibility and focus, and demonstrate some properties of the four‐valued semantics.
We present Delay-Energy Aware Routing (DEAP) a novel protocol for heterogeneous wireless ad hoc networks. DEAP is a crosslayer scheme that: first, manages adaptively the energy control by controlling the wakeup cycle ...
详细信息
We present Delay-Energy Aware Routing (DEAP) a novel protocol for heterogeneous wireless ad hoc networks. DEAP is a crosslayer scheme that: first, manages adaptively the energy control by controlling the wakeup cycle of sensors based on the experienced packet delay; and second, rout packet in each hoc by distributing the load a group of neighboring nodes. The primary result of DEAP is that it enables a flexible and wide range of tradeoffs between the packet delay and the energy consumption. Therefore, DEAP supports delay sensitive applications of heterogeneous networks that include sensors and actors. DEAP is scalable to the change in network size, node type, node density and topology. DEAP accommodates seamlessly such network changes, including the presence of actors in heterogeneous sensor networks. Indeed, while DEAP does not count on actors, it takes advantage of them, and uses their resources when possible, thus reducing the energy consumption of sensor nodes. Through analysis and simulation evaluations, we show that DEAP improves the packet delay and network lifetime compared to other protocols.
作者:
YONG-SEOK CHOIJI-AE SHINKEY-SUN CHOIDepartment of Computer Science
Division of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology (KAIST) 373-1 Guseong-dong Yuseong-gu Daejeon 305-701 Korea Division of Engineering
Information and Communications University (ICU) 103-6 MunJi-dong Yuseong-gu Daejeon 305-714 Korea
Parallel structure is a way to factor out common constituents in the expressions, which makes an effect of simplification of expressions. The complexity can be greatly reduced at the phase of sentence parsing by ident...
详细信息
Parallel structure is a way to factor out common constituents in the expressions, which makes an effect of simplification of expressions. The complexity can be greatly reduced at the phase of sentence parsing by identifying such boundaries of parallel structure. In this paper, we propose a probabilistic model to identify parallel cores (corresponding constituents) as well as boundaries of parallel noun phrases conjoined by "wa/gwa" (conjunctive particle in Korean). It is based on the idea of swapping constituents, utilizing symmetry (two or more identical constituents are repeated) and reversibility (the order of constituents is changeable) in parallel structure. The probabilities are calculated from (unlabelled) corpus with parallel structures, which is an advantage over the approaches trained with labeled corpus. Our model, moreover, is not dependent on languages. It is also shown that the semantic features of the modifiers around parallel noun phrase and the patterns among words can be utilized further to correct the boundaries identified by the swapping model. Experiment shows that our probabilistic swapping model performs much better than symmetry-based model and machine learning based approaches.
Light reflected from an object to a camera is a mixture of light from specular and diffuse reflection. This has important implications for many computer vision tasks, such as image matching and understanding. Many app...
详细信息
Light reflected from an object to a camera is a mixture of light from specular and diffuse reflection. This has important implications for many computer vision tasks, such as image matching and understanding. Many applications, for example, digital contents production, photorealistic image synthesis, and motion analysis, may require the diffuse and specular reflection to be separated. We present an approach for separating the diffuse and specular components of object surface reflection. This approach is based on the well-known dichromatic reflection model, however it separates reflections from reflectance fields constructed for every point on a 3-D object surface. Our method can prevent having to segment image into several uniformly-colored areas. Our method can thus separate reflection from an object surface with a complicated texture. We analyzed the properties of the reflectance field constructed from original frames and showed how to separate reflection components for each 3-D point. Experiments on real scenes showed that our method was successful.
暂无评论