Session management of complex multimedia calls a network-provided transaction-oriented service to a client is discussed. The authors suggest a set of goal-oriented policies that modify the all-or-nothing transaction s...
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Session management of complex multimedia calls a network-provided transaction-oriented service to a client is discussed. The authors suggest a set of goal-oriented policies that modify the all-or-nothing transaction semantics inherent in traditional transaction processing to accommodate more optimistic commit protocols that take corrective actions later if resources are found to be in inconsistent states. The use of semantics-based and nested transactions in allocating network resources is also suggested. These modifications are expected to improve overall resource utilization and reduce latency.< >
The redesign of business processes enables major improvements to be achieved in performance, cost, quality, and technical support services. Medical informatics will play a vital role in taking a systematic approach of...
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Transforming an existing business model into a data-driven one is challenging. Tools, methods and processes can support organisations in that innovation. This paper presents a three-year interventionist case study wit...
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In order to suppress the interference in local area networks, this paper presents a Wireless Local Area Networks (WLAN) interference self-optimization method based on a Self-Organizing Feature Map (SOM) neural network...
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In order to suppress the interference in local area networks, this paper presents a Wireless Local Area Networks (WLAN) interference self-optimization method based on a Self-Organizing Feature Map (SOM) neural network model. This method trains the model by using original data sets as the initial vector set and using the whole Signal to Interference plus Noise Ratio (SINR) vector generated by the change of one-Wireless Access Point (AP) channel as the basic feature. After the training, the SOM neural network can quickly locate the fault AP and optimize the network according to the changes of the network environment. Simulation results reveal that the proposed scheme can efficiently locate the AP where interference happens and optimize the interference with an improved user experience. Copyright (C) 2016 John Wiley & Sons, Ltd.
This paper presents DS an evolutionary swarm based algorithm suitable for parallel implementation and optimization of multi-objective goals. The algorithm has been implemented and tested using three standard benchmark...
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This paper presents DS an evolutionary swarm based algorithm suitable for parallel implementation and optimization of multi-objective goals. The algorithm has been implemented and tested using three standard benchmark functions; namely Rosenbrock, Griewank and Sshwefel. Next, we applied DS to solve the portfolio selection problem as a case study as a proof of concept to its suitability for multi-objective goals. Results are promising as compared to standard swarm.
Task-based workflows describe a set of predefined tasks executed in a predefined sequence flow in which documents representing business objects are sent to activate tasks according to some business goal. The increasin...
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Task-based workflows describe a set of predefined tasks executed in a predefined sequence flow in which documents representing business objects are sent to activate tasks according to some business goal. The increasingly agile nature of business processes implies that neither the potential tasks nor their sequence flow can be defined a priori. In this context, documents may constitute the central abstraction in a business process execution while services are stateless entities. While business goals and associated business rules drive models and their executions, document content and its structure may additionally be used to determine how the document can be processed and how multiple processing tasks may be composed dynamically. This paper introduces a document-based workflow model that implements such agile business processes. The described approach relies on the use of a rule-based system as a means to capture diverse concerns such as business goals and associated rules within a uniform framework. To this end, we illustrate this approach with an electronic health record (EHR) application.
The industrial Internet-of-things (IIoT) paradigm is reshaping the way industrial measurement systems are designed. Industrial systems require collecting accurate and timely measurements from the field using smart sen...
The industrial Internet-of-things (IIoT) paradigm is reshaping the way industrial measurement systems are designed. Industrial systems require collecting accurate and timely measurements from the field using smart sensor networks distributed in wide production areas. In this context, wireless connectivity of sensors acquires undeniable importance, and in turn, opens sig-nificant research challenges. Therefore, the research community is actively analyzing the suitability of different wireless technologies, for instance, Wi-Fi, 5G-and-beyond, and low-power wide-area networks (LPWANs), toward their possible industrial applications and optimizing them to realize high-performance and accurate smart measurement systems. In this paper, we focus on long range (LoRa)-based LPWANs (i.e., LoRaWAN), especially to overcome the duty cycle (DC) limitations of the adopted ALOHA-based medium access control (MAC) strategy in the industrial, scientific, and medical (ISM) bands. The ISM bands are subjected to an hourly constraint on the number of packet transmissions or inter-message delay, where the devices using higher spreading factors (SFs) can quickly consume the available transmission time. In this paper, we propose and assess the hybrid MAC designs in a LoRa network by combining carrier sense multiple access (CSMA) with ALOHA in two different ways i) exploiting different channel plans for the access mechanisms, ii) relay-assisted access, with devices using small SFs assisting neighboring higher-SF devices with listen-before-talk (LBT) mechanism. Our simulation results reveal that the proposed access strategies lead to a higher packet delivery rate (PDR) as well as lower mean and standard deviation of the communication delay; thus, increasing the overall measurement accuracy.
The media convergence has generated a new discourse between the media and its readers. At present, the channels for disseminating the information are linked to external platforms, such as social networks. Newspapers h...
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