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We present Catena, an efficiently-verifiable Bitcoinwitnessing scheme. Catena enables any number of thin clients, such as mobile phones, to efficiently agree on a log of application-specific statements managed by an adversarial server. Catenaimplements a log as an OP_RETURN transaction chain andprevents forks in the log by leveraging Bitcoin's security againstdouble spends. Specifically, if a log...
Academic and industry experts are now advocating for going from large-centralized Cloud Computing infrastructures to smaller ones massively distributed at the edge of the network. Among the obstacles to the adoption of this model is the development of a convenient and powerful IaaS system capable of managing a significant number of remote data-centers in a unified way. In this paper, we introduce...
The Supermarket industry in the Philippines is currently experiencing long queues that may cause customer loss. This is due to the problems occurring during customer and cashier transactions. The study will focus on the voiding process. It aims to reduce the long queues, to design a system that is hassle free for the management, and to minimize the customers waiting time. It will be done using a Six...
In recent years, large-scale natural disasters frequently occurred in Japan, and each time there occurred physical corruption or failure of the communication infrastructure, congestion of the communication network due to abrupt communication traffic occurred. As a result, it had a great influence on information collection and transmission using the Internet[1]. Also, the information required at the...
This paper presents a case study of an application prototype for shipbuilding industry using RESTful web service. Majority of database applications for traditional enterprises are based on the two-tier with simple client-server or the three-tier with additional RPC middleware. Because the outdated old configuration is not extensible, an alternative is required to link the database to the Web or mobile...
Day by day the use of memory is increases rapidly. A lot of data created every day so the data management is become a critical task. Most of time much amount of memory wastage because of same copies present on various locations. The process of eliminating the repeated or duplicates copies of data is called as Data deduplication. This data deduplication process is widely used in cloud storage to decrease...
Content Delivery Networks (CDN) interconnect several surrogate a.k.a replica servers that use geographical proximity as a criteria for delivering multimedia content. The delivered content may be enriched by value-added video services (e.g. in-stream video advertisements). The purpose of this demo is to show the prototype we developed in order to enable a cost-efficient and agile provisioning of value-added...
The Sensorian Hub is a software platform designed and developed for using the Raspberry Pi Single Board Computer (SBC) as a sensor node, whether independently or in a larger network of sensors. The intention of the platform is to provide an easy to use and highly customizable system for collecting and processing sensor data in a variety of environments and applications. In this paper, the design and...
The paper presents the design and implementation of a low cost and open source assistive system exploiting a wearable device in order to support deaf-blind people in communication using the Malossi alphabet. More specifically, the system, that we called GlovePi, is composed by three main low cost components, such as: (i) a gardener glove; (ii) a Raspberry Pi; (iii) a MPR121 capacitive touch sensor...
In the bygone, the exploration in computing focused on cloud computing, big data, and the internet of things (IOT). Irrespective of what computing is used, there is always a requirement for storage. The challenge faced in this area is storing the massive amount of data and their integrity. In the cloud, computing resources and services are made available on demand the most significant among them is...
Cloud providers seek to maximize their market share. Traditionally, they deploy datacenters with sufficient capacity to accommodate their entire compute demand while maintaining geographical affinity to its customers. Achieving these goals by a single cloud provider is increasingly unrealistic from a cost of ownership perspective. Moreover, the carbon emissions from underutilized datacenters place...
FPGAs (Field Programmable Gate Arrays) are making their way into data centers (DC). They are used as accelerators to boost the compute power of individual server nodes and to improve the overall power efficiency. However, this approach limits the number of FPGAs per node and hinders the acceleration of large-scale distributed applications.
By the virtue of blooming automation industry and wireless connectivity, all the devices within the home can be connected. This improves the comfort, energy efficiency, indoor security, cost savings of the home. Small and constrained embedded devices are used to remotely monitor the conditions within home and control the home appliances. In such case, power consumption and network bandwidth become...
The convergence of high-performance computing and big data, which has become known as the field of extreme big data, is problematic in that file creation in storage systems such as distributed file systems is not optimized. That is, the large workload leads to the simultaneous creation of many files by many processes when creating checkpoints. The need to improve the file creation processes prompted...
FPGAs (Field Programmable Gate Arrays) are making their way into data centers (DC). They are used as accelerators to boost the compute power of individual server nodes and to improve the overall power efficiency. Meanwhile, DC infrastructures are being redesigned to pack ever more compute capacity into the same volume and power envelops. This redesign leads to the disaggregation of the server and...
Heterogeneous servers have long been introduced to improve energy efficiency in warehouse-scale computers(WSCs). However, running latency-critical web-services on heterogeneous servers is still challenging because the overheads of transition between such servers heavily impact overall benefits and performance. We propose Montgolfier, a runtime power management system based on a latency-aware feedback...
Due to security situation in Afghanistan traditional paper-based libraries are vulnerable to preserve Afghan knowledge and culture heritage. This paper proposes a robust library management system namely "e-Ketabtoon". The architectural landscape is comprised of two layers: server responsiveness capacity and client request capacity. User centered design has been adhered throughout the development...
Large-scale parallel file systems are of prime importance today. However, despite of the importance, their failure-recovery capability is much less studied compared with local storage systems. Recent studies on local storage systems have exposed various vulnerabilities that could lead to data loss under failure events, which raise the concern for parallel file systems built on top of them.This paper...
This paper presents a prototype system, designed and developed exploiting the Internet of Things paradigm and its related technologies with altruistic purposes. In fact, the system here described involves the iBeacon technology and BLE-capable smart phones, put to good use to provide an altruistic Internet of Things (IoT) platform. In particular, we implemented a mobile application, for iOS and Android...
The need to perform data analytics on exploding data volumes coupled with the rapidly changing workloads in cloud computing places great pressure on data-center servers. To improve hardware resource utilization across servers within a rack, we propose Direct Extension of On-chip Interconnects (DEOI), a high-performance and efficient architecture for remote resource access among server nodes. DEOI...
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