We fill a gap in the literature of asymmetric tournament by allowing the principal to optimally alter noise in relative performance evaluation, such that the observed performance of each agent is less or more dependen...
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In the era of digitalization and networking, the high cost and long time of traditional centralized copyright protection methods make the copyright of digital works cannot be well protected and the infringement phenom...
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ISBN:
(数字)9781728165219
ISBN:
(纸本)9781728165226
In the era of digitalization and networking, the high cost and long time of traditional centralized copyright protection methods make the copyright of digital works cannot be well protected and the infringement phenomenon be serious. Blockchain, as a decentralized distributed database, can store the copyright information of works. This paper researches and analyzes the advantages of blockchain in copyright protection and the current research status, and finally a copyright certificate storage and trading system based on blockchain is designed. In this system, registration confirmation, transaction certificate, and dispute protection are researched as a complete process. And the certificate storage data on the blockchain are precisely designed, which greatly reduces the time and cost of rights protection. What's more, the copyright of digital works is divided by studying laws related to copyright in China, which makes this system more suitable for practical applications.
This study investigates the energy cost and carbon emission reduction problem in geographically distributed cloud data centers (DCs), where each DC is connected with its own renewable energy resources (RERs) for green...
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ISBN:
(数字)9781728144528
ISBN:
(纸本)9781728144535
This study investigates the energy cost and carbon emission reduction problem in geographically distributed cloud data centers (DCs), where each DC is connected with its own renewable energy resources (RERs) for green energy generation. We consider four cloud DCs that are operated by a single cloud service provider. They consume energy from both RERs and from the commercial grid to meet the demand of cloud users. For energy pricing, we consider four different energy markets that offer varying energy prices per hour. Additionally, our proposed strategy enables DCs to sell excess electricity to the commercial grid in peak-price hours and purchase in low-cost hours according to power trading. This work also exploits energy storage devices (ESDs) to store energy for future use. We utilize real-time data requests, weather data, and pricing data for performing simulations and results affirm the effectiveness and productiveness of our proposed method to mitigate the energy cost and carbon emission of cloud DCs.
New Web technologies that allow greater interaction among users have emerged in the Internet. In such a way that now it is common for users to participate actively by writing, publishing, exchanging or sharing digital...
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ISBN:
(纸本)9783319986784;9783319986777
New Web technologies that allow greater interaction among users have emerged in the Internet. In such a way that now it is common for users to participate actively by writing, publishing, exchanging or sharing digital content over the Internet. This fact has allowed the emergence of web communities, web services, social networking services, wikis, blogs, etc. that are developed on a specific topic. This paper presents a multimedia web platform for the creation, edition and dissemination of historical cultural contents. Security strategies are considered in the design and implementation of the interactive platform. A digital platform with this purpose is very important due to the great cultural heritage of Mexico. We evaluate the operation of our platform with cultural information related with different historic stages of Mexico such as prehispanic, colonial and independent. Our proposal seeks that the population has knowledge of cultural and historical contents in order to continuing preserve their cultural heritage.
Many of today's applications in parallel and concurrent computing are deployed using reconfigurable hardware, in particular field-programmable gate arrays (FPGAs). Due to the complexity of modern applications and ...
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ISBN:
(纸本)9783030294007;9783030293994
Many of today's applications in parallel and concurrent computing are deployed using reconfigurable hardware, in particular field-programmable gate arrays (FPGAs). Due to the complexity of modern applications and the wide spectsrum of possible implementations, manual design of modern custom hardware is not feasible. Computer-aided design tools enable the automated transformation of high-level descriptions into hardware. However, the efficient identification of Pareto-optimal solutions to trade-off between resource utilisation and throughput is still an open research topic. Combining resource allocation and modulo scheduling, we propose a new approach for design-space exploration of custom hardware implementations. Using problem-specific rules, we are able to exclude obviously dominated solutions from the design space before scheduling and synthesis. Compared to a standard, multi-criteria optimisation method, we show the benefits of our approach regarding runtime at the design level.
As High-Performance computing (HPC) systems strive towards the exascale goal, studies suggest that they will experience excessive failure rates. For this reason, detecting and classifying faults in HPC systems as they...
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ISBN:
(纸本)9783030294007;9783030293994
As High-Performance computing (HPC) systems strive towards the exascale goal, studies suggest that they will experience excessive failure rates. For this reason, detecting and classifying faults in HPC systems as they occur and initiating corrective actions before they can transform into failures will be essential for continued operation. In this paper, we propose a fault classification method for HPC systems based on machine learning that has been designed specifically to operate with live streamed data. We cast the problem and its solution within realistic operating constraints of online use. Our results show that almost perfect classification accuracy can be reached for different fault types with low computational overhead and minimal delay. We have based our study on a local dataset, which we make publicly available, that was acquired by injecting faults to an in-house experimental HPC system.
The paradigm of Internet of Things (IoT) is the result of rapid advances in the development of small low powered computing devices with wireless connectivity. This has given rise to a plethora of new applications, inc...
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ISBN:
(数字)9781728110622
ISBN:
(纸本)9781728110639
The paradigm of Internet of Things (IoT) is the result of rapid advances in the development of small low powered computing devices with wireless connectivity. This has given rise to a plethora of new applications, including, but not limited to monitoring, sensing, intrusion detection and others. Due to the nature of these applications, IoT devices are often burdened with receiving and transmitting a large volume of data that is time and delay sensitive. Furthermore, since most of these devices are battery powered, a data deluge often renders parts of the network depleted of energy, causing that part to go dark. In this work, we propose an energy optimization framework based on predictive cubic splines that anticipate a sudden increase in the bandwidth and minimize energy consumed by these devices while still maintaining an optimum degree of availability and reducing bottlenecks in the data flow.
The emerging applications, e.g., virtual reality, online games, and Internet of Vehicles, have computation-intensive and latency-sensitive requirements. Mobile edge computing (MEC) is a powerful paradigm that signific...
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ISBN:
(数字)9781728190747
ISBN:
(纸本)9781728183824
The emerging applications, e.g., virtual reality, online games, and Internet of Vehicles, have computation-intensive and latency-sensitive requirements. Mobile edge computing (MEC) is a powerful paradigm that significantly improves the quality of service (QoS) of these applications by offloading computation and deploying services at the network edge. Existing works on service placement in MEC usually ignore the impact of the different requirements of QoS among service providers (SPs), which is common in many applications such that online game requires extremely low latency and online video requires extremely large bandwidth. Considering the competitive relationship among SPs, we propose an auction-based resource allocation mechanism. We formulate the problem as a social welfare maximization problem to maximize effectiveness of allocated resources while maintaining economic robustness. According to our theoretical analysis, this problem is NP-hard, and thus it is practically impossible to derive the optimal solution. To tackle this, we design multiple rounds of iterative auctions mechanism (MRIAM), which divides resources into blocks and allocates them through multiple rounds of auctions. Finally, we conduct extensive experiments and demonstrate that our auction-based mechanism is effective in resource allocation and robust in economics.
In mobile edge computing (MEC) systems with energy harvesting, the mobile devices are empowered with the energy that harvested from renewable energy sources. On the other hand, mobile devices can offload their computa...
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With searchable encryptions in the cloud computing, users can outsource their sensitive data in ciphertext to the cloud that provides efficient and privacy-preserving multi-keyword top-k searches. However, most existi...
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