Changes of ICP waveform morphology are characterized with different patients' states like hypertension, hydrocephalus and traumatic brain injury etc. Morphological clustering and analysis of ICP pulse (MOCAIP) app...
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Changes of ICP waveform morphology are characterized with different patients' states like hypertension, hydrocephalus and traumatic brain injury etc. Morphological clustering and analysis of ICP pulse (MOCAIP) approach is recently developed to extract ICP morphology feature, in which hierarchical clustering is used to extract the dominated pulse. In this paper, we evaluate the feasibility of using principle component analysis (PCA) and independent component analysis (ICA) to extract dominated pulse. The comparative study among clustering, PCA and ICP based approaches shows that PCA approach may be an alternative of clustering approach to extract dominated pulse in a faster fashion when dataset is of large size.
The main goal in design of grid connected photo voltaic systems is to maximize the energy generation based on local energy requirements, weather conditions, economic and social impact. These factors ought to be taken ...
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ISBN:
(纸本)9781424445080;9781424445097
The main goal in design of grid connected photo voltaic systems is to maximize the energy generation based on local energy requirements, weather conditions, economic and social impact. These factors ought to be taken into account to perform a model that allow design grid-connected photo voltaic systems. In this paper a design-dimensioning model for a small grid-connected photo voltaic systems is developed. This model is based on energy conditions instead of power conditions. There are shown the two main trends that are typically used in the design process and the calculation of the two main components of the system (generator and inverter). An example of the design for a system located in Bogota-Colombia is studied.
It is proposed in this session that the interactivity necessary in ubiquitous learning can be enhanced by the virtual tutor who mediates between the learner and the e-Learning contents. Arousing students' intellec...
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Injuries from residential fires are often overlooked as a dangerous safety concern for children. While lectures and classroom learning techniques can be effective in mitigating this risk, studies have shown that kids ...
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ISBN:
(纸本)9780889867253
Injuries from residential fires are often overlooked as a dangerous safety concern for children. While lectures and classroom learning techniques can be effective in mitigating this risk, studies have shown that kids retain information better if they are allowed to practice escape techniques. Virtual Reality has been used to simulate situations that are too dangerous to practice in real life. This paper presents a fire safety program that combines classroom activities and small group interaction with fire professionals with a virtual simulation of an at-risk house. Students help firefighters to identify home fire hazards and then practice escaping from a simulated fire in a virtual environment. A CAVE is used to immerse participants in the fire scene.
Conventional e-mail systems are prone to problems that affect their dependability. E-mail systems operate following a "push-based" approach: the sender side server pushes the e-mails it wants to send to the ...
Conventional e-mail systems are prone to problems that affect their dependability. E-mail systems operate following a "push-based" approach: the sender side server pushes the e-mails it wants to send to the corresponding receivers' servers. This approach may impose processing and storage overhead on the receiver side. This paper presents a peer-to-peer e-mail system in which messages are sent directly from senders to receivers using a "pull-based" approach. The sender stores locally all e-mails it intends to send, and notify their receivers using a global, distributed notification service. Receivers can then retrieve such notifications and decide if they want to receive the corresponding e-mails. If so, e-mails can be retrieved directly from their senders. This proposal is inspired from file sharing peer-to-peer systems, in which users locate and retrieve the contents they are looking for. A prototype was built to show the feasibility of the proposal, and experimental results show its viability.
E-mail services are essential in the Internet. However, the basic e-mail architecture presents problems that opens it to several threats. Alternatives have been proposed to solve some problems related with e-mail serv...
E-mail services are essential in the Internet. However, the basic e-mail architecture presents problems that opens it to several threats. Alternatives have been proposed to solve some problems related with e-mail services, offering reliability and scalability to those systems. This work presents a distributed trust model, allowing to create dynamic and decentralized trusted server lists, through the exclusion of servers used as spreaders of malicious messages. Many techniques were used to build it, like a social network model, message filters, message management, and a trust information storage and propagation model.
The Transmission Control Protocol - TCP has been widely researched in many different networking technologies such as wireless, optical, satellite, sensor, and wired since it is the most used protocol on the Internet. ...
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The Transmission Control Protocol - TCP has been widely researched in many different networking technologies such as wireless, optical, satellite, sensor, and wired since it is the most used protocol on the Internet. In Wireless mesh networks, this protocol still has challenges due to its origin and implementations for wired networks. This paper proposes an adaptation on the congestion control mechanism using information from the network layer to improve TCP performance through the vertical calibration across layer technique. The result is the Cross Layer Mesh - Transmission Control Protocol (CLM-TCP). To show the efficiency of the proposal, simulations in the NS-2 were carried out.
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