283,942 research outputs found
Dying of a hundred good symptoms: why good security can still fail - a literature review and analysis
Many organizations suffer serious information security incidents, despite having taken positive steps towards achieving good security standards. The authors hypothesize that these issues are often as a result of security arrangements not being sufficiently integrated with businesses. We believe that adopting an enterprise architecture (EA) approach to implementing information security â commonly referred to as an âEnterprise Information Security Architectureâ (EISA) â will deliver substantial benefits. Our paper has reviewed and analyzed literature concerning the root causes of information security incidents and describes a novel approach with 8 domains for ensuring critical factors are considered when building an EISA framework
Epidemic Dissemination of Presence Information in Mobile Instant Messaging Systems
This paper presents an approach for exchanging presence information between users of an instant messaging system in a mobile ad hoc network. As major feature, presence information is transferred when mobile users get in direct contact, similar to the spread of an infections disease. By exploiting node mobility, presence information is epidemically distributed throughout the network, effectively overcoming network partitions. We show how to apply the Passive Distributed Indexing Protocol, which implements a general-purpose lookup service for mobile applications building upon epidemic data dissemination, for implementing the exchange of presence information. The effectiveness of the approach is illustrated in a simulation study using the network simulator ns-2. Building upon the results, we present the architecture of a mobile instant messaging system that supports the widely adopted Extensible Messaging and Presence Protocol (XMPP), an IETF standardized protocol for instant messaging
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iSEA: IoT-based smartphone energy assistant for prompting energy-aware behaviors in commercial buildings
Providing personalized energy-use information to individual occupants enables the adoption of energy-aware behaviors in commercial buildings. However, the implementation of individualized feedback still remains challenging due to the difficulties in collecting personalized data, tracking personal behaviors, and delivering personalized tailored information to individual occupants. Nowadays, the Internet of Things (IoT) technologies are used in a variety of applications including real-time monitoring, control, and decision-making due to the flexibility of these technologies for fusing different data streams. In this paper, we propose a novel IoT-based smartphone energy assistant (iSEA) framework which prompts energy-aware behaviors in commercial buildings. iSEA tracks individual occupants through tracking their smartphones, uses a deep learning approach to identify their energy usage, and delivers personalized tailored feedback to impact their usage. iSEA particularly uses an energy-use efficiency index (EEI) to understand behaviors and categorize them into efficient and inefficient behaviors. The iSEA architecture includes four layers: physical, cloud, service, and communication. The results of implementing iSEA in a commercial building with ten occupants over a twelve-week duration demonstrate the validity of this approach in enhancing individualized energy-use behaviors. An average of 34% energy savings was measured by tracking occupantsâ EEI by the end of the experimental period. In addition, the results demonstrate that commercial building occupants often ignore controlling over lighting systems at their departure events that leads to wasting energy during non-working hours. By utilizing the existing IoT devices in commercial buildings, iSEA significantly contributes to support research efforts into sensing and enhancing energy-aware behaviors at minimal costs
SMART VILLAGE DESIGN USING INDONESIAN GOVERNMENT ENTERPRISE ARCHITECTURE
Almost all aspects of life require information technology, starting from aspects of primary, secondary, and tertiary needs. Digital technology and innovation can support quality of life, higher standards of living, better public services for the community, and better use of resources to become new opportunities for a rural value chain in terms of better products and processes. Smart village is the concept of developing an independent village by providing services. Implementing smart villages will be the right solution to building a formidable and sustainable smart city to improve the quality of public resources and services. IGEA framework (Indonesian Government Enterprise Architecture Framework) is designed to build an enterprise architecture at the Indonesian government level to support the development of IT services to be better, more efficient, and effective. The phases used in architectural design using IGEA are the Preliminary Phase, Architecture Vision, Business architecture, Data Architecture, Application Architecture, and Technology Architecture. This study aims to analyze, design, and produce a blueprint for Enterprise Architecture by applying the smart village concept to overcome public service problems and improve the quality of apparatus resources and accountable governance in public services. The scope of this research is only in the preliminary phase of the business architecture. The result is architecture principle, goals, vision and mission, policy and regulation, solution concept diagram, and improvement of twelve business processes, and public service catalog
A Binaural Neuromorphic Auditory Sensor for FPGA: A Spike Signal Processing Approach
This paper presents a new architecture, design
flow, and field-programmable gate array (FPGA) implementation
analysis of a neuromorphic binaural auditory sensor, designed
completely in the spike domain. Unlike digital cochleae that
decompose audio signals using classical digital signal processing
techniques, the model presented in this paper processes information
directly encoded as spikes using pulse frequency modulation
and provides a set of frequency-decomposed audio information
using an address-event representation interface. In this case,
a systematic approach to design led to a generic process for
building, tuning, and implementing audio frequency decomposers
with different features, facilitating synthesis with custom features.
This allows researchers to implement their own parameterized
neuromorphic auditory systems in a low-cost FPGA in order to
study the audio processing and learning activity that takes place
in the brain. In this paper, we present a 64-channel binaural
neuromorphic auditory system implemented in a Virtex-5 FPGA
using a commercial development board. The system was excited
with a diverse set of audio signals in order to analyze its response
and characterize its features. The neuromorphic auditory system
response times and frequencies are reported. The experimental
results of the proposed system implementation with 64-channel
stereo are: a frequency range between 9.6 Hz and 14.6 kHz
(adjustable), a maximum output event rate of 2.19 Mevents/s,
a power consumption of 29.7 mW, the slices requirements
of 11 141, and a system clock frequency of 27 MHz.Ministerio de EconomĂa y Competitividad TEC2012-37868-C04-02Junta de AndalucĂa P12-TIC-130
Smart contracts for decentralised building information modelling.
The paper presents a model for decentralizing building information modelling, through implementing its infrastructure using the decentralized web. We discuss the shortcomings of BIM in terms of its infrastructure, with a focus on tracing identities of design authorship in this collective design tool. In parallel we examine the issues with BIM in the cloud and propose a decentralized infrastructure based on the Ethereum blockchain and the Interplanetary filesystem (IPFS). A series of computing nodes, that act as nodes on the Ethereum Blockchain, host disk storage with which they participate in a larger storage pool on the Interplanetary Filesystem. This storage is made available through an API is used by architects and designers creating and editing a building information model that resides on the IPFS decentralised storage. Through this infrastructure central servers are eliminated, and BIM libraries and models can be shared with others in an immutable and transparent manner. As such Architecture practices are able to exploit their intellectual property in novel ways, by making it public on the internet. The infrastructure also allows the decentralised creation of a resilient global pool of data that allows the participation of computation agents in the creation and simulation of BIM models
Interface of Building Information Modeling and Blueprints on Construction Sites
Master's thesis in Industrial economics and technology management (IND590)This Masterâs thesis discloses the impact of Building Information Modeling (BIM) during the delivery phase of large-scale construction projects. The Architecture, Engineering, and Construction (AEC) industry is gradually adopting more digital solutions in the pursuit of increasing operational efficiency and becoming more sustainable. In this regard, it is expedient to investigate whether the new tools and processes that BIM entails can provide the on-site delivery team with a better foundation of blueprints than traditional 2D paper-based drawings. The study was conducted through qualitative methods with an analytical generalization approach, including literature and case studies. Four different projects were examined through exploratory semi-structured interviews with key project representatives. The findings suggest that the implementation of on-site BIM through interfaces such as tablets and smartphones can enhance production activities and provide the delivery team with an improved and more comprehensive foundation of blueprints. However, several challenges must be considered. The projects investing in implementing digital solutions today are facilitating long-term value creation and are contributing to driving the industry forwards. Keywords: Building Information Modeling; Blueprints; Interface; Digital transformation
BIMing the architectural curricula: integrating Building Information Modelling (BIM) in architectural education
Building Information Modelling (BIM) reflects the current heightened transformation within the Architectural, Engineering and Construction (AEC) Industry and the Facilities and Management (FM) sector, offering a host of benefits from increased efficiency, accuracy, speed, co-ordination, consistency, energy analysis, project cost reduction etc to various stake holders from owners to architects, engineers, contractors and other built environment professionals. Many countries around the world are responding to this paradigm shift including the United Kingdom (UK). The Cabinet office took the decision in 2011 to make the use of collaborative 3D BIM technology mandatory for all public sector construction contracts by 2016 (Cabinet Office, 2011). According to Smith and Tardif, despite certain myths and misconceptions surrounding BIM, its rate of implementation has been much faster in comparison to the availability of professionals skilled in use of BIM, thus creating a skill gap in the design and construction industry (Smith and Tardif, cited in Barison and Santos, 2010a).
This article aims at bridging the gap between the graduate skill sets and the changing needs of the profession. The research methodology adopted consists of thoroughly reviewing the existing literature in this subject area coupled with carrying out a survey of accredited Schools of Architecture in the UK. The analysis of the survey questionnaire results shows the extent to which BIM is currently being taught and identifies the barriers where its implementation has either been slow or not yet started. The paper highlights the fact that there has been considerable delay in the successful integration of BIM in the Schools of Architecture in the UK, thus emphasising the need for expeditiously training and preparing students in the use of BIM making them ready to effectively perform in a BIM enabled work arena
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