3,993 research outputs found

    Securing Real-Time Internet-of-Things

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    Modern embedded and cyber-physical systems are ubiquitous. A large number of critical cyber-physical systems have real-time requirements (e.g., avionics, automobiles, power grids, manufacturing systems, industrial control systems, etc.). Recent developments and new functionality requires real-time embedded devices to be connected to the Internet. This gives rise to the real-time Internet-of-things (RT-IoT) that promises a better user experience through stronger connectivity and efficient use of next-generation embedded devices. However RT- IoT are also increasingly becoming targets for cyber-attacks which is exacerbated by this increased connectivity. This paper gives an introduction to RT-IoT systems, an outlook of current approaches and possible research challenges towards secure RT- IoT frameworks

    The Nature of Wayfinding in the City: Waikiki

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    The focus of this study on the nature of wayfinding may reveal multiple unknown points in the terrain one traverses. This thesis entails a quasi-objective approach that enables a creative way of analyzing, synthesizing, and discovering these points of unknown desire and destination. For example, surveying the tourists and travelers to Waikiki may reveal the multiplicity of points that embed themselves in the urban landscape. Yet, these spatial points reveal themselves through the act of traversing, finding, discovering, and encountering along the way. In addition, the study reveals the spatial matrix in which points of desire and destination manifest for the visitor, a multiplicity of points with instances of departure and arrival. The visitor demographic can be a “lens” from which to understand how one uses wayfinding tools and finds their points of desire in the terrain. For instance, how do we as tourists and travelers find our way? Also, how do we traverse toward a given destination? Indeed, most travelers and tourists are using visual, auditory, and tactile cues to find their way. Yet, do these spatial signifiers of meaning help them find their destination or are they getting them lost? Focusing on Waikiki as a destination and site for this study will give insight into the phenomena of wayfinding, which influences the perception of the user while traversing a given terrain within a spatial matrix of desire. methodology The strategies and tactics that I will employ will be a combination of empirical and quasi-objective approaches, such as collecting evidence, taking photos, surveying tourists and travelers, and creating experiential maps from the site. This is my way of studying wayfinding, from the 6 evidence collected (brochures, maps, ephemeral artifacts) how does one find their point of desire in waikiki? what are the instruments of finding destinations in waikiki? what are the modes of traversing waikiki’s terrain? interpretive mappings and site photography surveying tourists and tourist mappings 1 2 3 triangulation empirical study (Experiential + interpretive) GRAPHIC A: TRIANGULATION OF COLLECTED EVIDENCE A I ABSTRACT 7 totally rigorous and scientific, to the subjective of scope. This will attempt to synthesize an understanding of how one wayfinds in urban environments with multiple points of destination. For example, in figure A, this method entails triangulating the surveys of the travelers and tourists, collecting evidence, such as maps and brochures, and creating interpretive mappings of Waikiki, to reveal and represent the spatial matrix of points as it relates to wayfinding. These tactics will help create experiential mappings, which can uncover information about the terrain of Waikiki that is unknown to travelers and tourists, advancing the notion that the urban terrain is multiple in response to the user’s ability to traverse, find, and encounter spatial points of desire and destination. goals One of the goals of this study will be to understand how one finds their way in dense urban environments, such as cities by using a variety of visual, tactile, and auditory signs. These signs come from the built and natural landscape as well as digital mobile devices of wayfinding. Yet, another goal would be to investigate the spatial matrix that embeds points of destination and desire for the visitors to experience and discover. For example, Waikiki is a destination for many travelers and tourists, thus manifesting points of desire, which are explicit, implicit, impulsive, and interstitial. The visitors traverse a spatial matrix of points, which is multiple and forms a network of pathways and nodal interactions. Indeed, maps and brochures afford the traveler and tourist the ability to traverse the terrain and find their destination or point of desire. Thus, allowing for spontaneity and discovery to manifest within the terrain, where one traverses and encounters spatial points, along the way, creating meaningful instances in space and time. theory These dense urban terrains create a need for wayfinding to occur because they contain spatial matrices of destination and desire. A complex system of built form and semantics is embedded in the DNA of the urban plan. Most urban spaces interconnect to each other and weave a network of circulation towards multiple points of desire. Each point can inform the experience and memory of the traveler or tourist while traversing, which influences how they map and perceive their terrain. This densification of the urban environment curtails users perception while traversing the terrain at different velocities, influencing the way these points of destination are found, made, and forgotten. Moreover, these systems of human movement along pedestrian and vehicular pathways, in the urban framework, create multiple spatial matrices of desirable points that layer within trajectories in the terrain

    Modelling Embedded Systems with AADL: A Practical Study

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    In today’s world, embedded systems can be seen everywhere around us. These systems range from consumer electronics such as mobile phones, cameras and portable music players to sophisticated devices such as planes and satellite systems. In either form embedded systems are designed to perform specific tasks with constraints on their qualities and available resources. These constraints can either be soft or hard depending on the nature of the system: a satellite system, for example, has hard safety constraints. Some of the major constraints for embedded systems are high reliability, performance, safety and dependability, small memory size, low power and low processing capabilities. Designing systems with such constraints is a challenge. Developing system architectures during system development has gained importance as it helps in analyzing the system before its implementation. A system architecture is a formal description of a system that describes its building blocks, their properties and the interactions among them. System architectures can be used to analyze various properties of a system such as memory consumption and system safety. For embedded systems, this is of extreme importance since a well described system architecture allows us to predict whether any of the previously mentioned constraints can be met, without requiring the construction of an often expensive prototype implementation. Description of system architectures can be achieved using the formal notations offered by Architecture Description Languages (ADLs). Such ADLs often also provide tool support for the modelling and analysis of the system architecture. Many ADLs for embedded systems are available in both academic and industrial communities, such as Rapide, MetaH, AADL and Wright. Among the available ADLs, the best known and most actively used language is the Architecture Analysis and Design Language (AADL). Standardized by the Society of Automotive Engineers, AADL was originally developed for modelling and analysis of systems in the domain of avionics. However, because of its rich modelling and analysis capabilities, it is widely used for embedded systems in other domains as well. AADL provides a modelling formalism accompanied by a toolset to support modelling activities and system analyses. AADL models can be used to perform various analyses such as flow latency, resource consumption, real-time schedulability, security and safety analysis. Because of its history in the avionics domain, AADL does not address each and every modelling and analysis requirement of other embedded domains. However, during its design, it was foreseen that use of AADL in other domains could require additional modelling concepts and analyses. To meet potential needs AADL was designed as an extensible ADL. This chapter is intended to provide insight into the design needs of embedded systems and the formalisms available to address those needs.status: publishe

    Multimedia platform framework for the automobile : architectural analysis and proposal evaluation

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    Thesis (S.M.)--Massachusetts Institute of Technology, System Design and Management Program, 2007.Includes bibliographical references (p. 104-107).The automobile industry is at a critical point in the development of in-vehicle entertainment and information features. The consumer electronics industry is changing dramatically in the areas of entertainment through audio and video playback, personal efficiency tools, and wireless communications. Equally as significant is the rapid development and feature migration that is occurring between four of the major mobile device categories; mobile phones, smart phones, PDA's, and media players. With this convergence occurring, automakers are finding it more difficult to satisfy the needs of consumers with respect to these new capabilities.In order for the automakers to establish a solution, a new framework needs to be established. The automakers are unable to satisfy this market desire through traditional technology delivery strategies, especially given the fast changing and complex interface that currently exists in this market space.This thesis establishes the framework used to identify and critically evaluate an external platform strategy for the purpose of satisfying the above need. The thesis draws upon leading literature to provide key attributes of successful external platform implementations. The first aspect of the framework established involves ensuring the need for an external platform through complexity and development clockspeed incompatibilities. The second section of the framework involves the evaluation of the architectural attributes that lead to external platform success. Finally, the stakeholders are identified and roles are established.The next phase of the analysis involves the evaluation of two prominent solution proposals using the established framework. These include the standards-based solution model that was developed at Automotive Multimedia Interface Collaboration (AMI-C), and the more recent commercial operating system proposal.(cont) These proposals are evaluated to determine if a specific proposal is better suited to capture the mobility market interface in the automobile than another. The analysis and framework provided it this thesis provides a basis for further tactical evaluation by the automakers that wish to meet the needs of the mobility market.by Kevin Baughey.S.M

    Enabling IoT in Manufacturing: from device to the cloud

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    Industrial automation platforms are experiencing a paradigm shift. With the new technol-ogies and strategies that are being applied to enable a synchronization of the digital and real world, including real-time access to sensorial information and advanced networking capabilities to actively cooperate and form a nervous system within the enterprise, the amount of data that can be collected from real world and processed at digital level is growing at an exponential rate. Indeed, in modern industry, a huge amount of data is coming through sensorial networks em-bedded in the production line, allowing to manage the production in real-time. This dissertation proposes a data collection framework for continuously collecting data from the device to the cloud, enabling resources at manufacturing industries shop floors to be handled seamlessly. The framework envisions to provide a robust solution that besides collecting, transforming and man-aging data through an IoT model, facilitates the detection of patterns using collected historical sensor data. Industrial usage of this framework, accomplished in the frame of the EU C2NET project, supports and automates collaborative business opportunities and real-time monitoring of the production lines

    New Trends in Internet of Things, Applications, Challenges, and Solutions

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    Internet of things (IoT) refers to an innovation and advance field to introduce a new concept of technologies with various potential advantages. In IoT, different types of diverse smart devices and gadgets with smart communication interfaces are connected with each other and offers the plethora of services in our daily life. IoT has gained attention in all fields of life like e-home, e-commerce, e-health, smart grids, intelligent transportation systems, and e-governance. The objects in IoT increasing preponderance of entities and transform objects into new and real-world objects. In this review paper, we discuss the new trend in IoT, its applications and recent challenges and their solutions. In addition, the paper also elaborates the existing systems, IoT architecture and technical aspects with future trends in the field. This review will be helpful to new researchers to find the existing technologies and challenges in order to continue their research in the field

    CMOS Vision Sensors: Embedding Computer Vision at Imaging Front-Ends

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    CMOS Image Sensors (CIS) are key for imaging technol-ogies. These chips are conceived for capturing opticalscenes focused on their surface, and for delivering elec-trical images, commonly in digital format. CISs may incor-porate intelligence; however, their smartness basicallyconcerns calibration, error correction and other similartasks. The term CVISs (CMOS VIsion Sensors) definesother class of sensor front-ends which are aimed at per-forming vision tasks right at the focal plane. They havebeen running under names such as computational imagesensors, vision sensors and silicon retinas, among others. CVIS and CISs are similar regarding physical imple-mentation. However, while inputs of both CIS and CVISare images captured by photo-sensors placed at thefocal-plane, CVISs primary outputs may not be imagesbut either image features or even decisions based on thespatial-temporal analysis of the scenes. We may hencestate that CVISs are more “intelligent” than CISs as theyfocus on information instead of on raw data. Actually,CVIS architectures capable of extracting and interpretingthe information contained in images, and prompting reac-tion commands thereof, have been explored for years inacademia, and industrial applications are recently ramp-ing up.One of the challenges of CVISs architects is incorporat-ing computer vision concepts into the design flow. Theendeavor is ambitious because imaging and computervision communities are rather disjoint groups talking dif-ferent languages. The Cellular Nonlinear Network Univer-sal Machine (CNNUM) paradigm, proposed by Profs.Chua and Roska, defined an adequate framework forsuch conciliation as it is particularly well suited for hard-ware-software co-design [1]-[4]. This paper overviewsCVISs chips that were conceived and prototyped at IMSEVision Lab over the past twenty years. Some of them fitthe CNNUM paradigm while others are tangential to it. Allthem employ per-pixel mixed-signal processing circuitryto achieve sensor-processing concurrency in the quest offast operation with reduced energy budget.Junta de Andalucía TIC 2012-2338Ministerio de Economía y Competitividad TEC 2015-66878-C3-1-R y TEC 2015-66878-C3-3-

    Industry Platforms and Ecosystem Innovation

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    This paper brings together the recent literature on industry platforms and shows how it relates to managing innovation within and outside the firm as well as to dealing with technological and market disruptions and change over time. First, we identify distinct types of platforms. Our analysis of a wide range of industry examples suggests that there are two predominant types of platforms: internal or company-specific platforms, and external or industry-wide platforms. We define internal (company or product) platforms as a set of assets organized in a common structure from which a company can efficiently develop and produce a stream of derivative products. We define external (industry) platforms as products, services, or technologies that act as a foundation upon which external innovators, organized as an innovative business ecosystem, can develop their own complementary products, technologies, or services. Second, we summarize from the literature general propositions on the design, economics, and strategic management of platforms. Third, we review the case of Intel and other examples to illustrate the range of technological, strategic, and business challenges that platform leaders and their competitors face as markets and technologies evolve. Finally, we identify practices associated with effective platform leadership and avenues for future research to deepen our understanding of this important phenomenon and what firms can do to manage platform-related competition and innovation

    Internet of Things: The next evolutionary step- A Review

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    Now-a-days the world is witnessing the start of a new era of Internet of Things (IoT) also known as Internet of Objects. In this era, computing will be outside the realm of the traditional desktop and many of the objects surrounding us will be on the network in one form or another. Generally speaking IoT refers to the networked interconnection of everyday objects, which are often equipped with ubiquitous intelligence i.e. we can say that IoT stands for virtually interconnected objects that are identifiable and equipped with sensing, computing, and communication capabilities.IoT promises a great future for the internet where the type of communication is machine-to-machine (M2M). This review presents a vision for worldwide implementation of IoT while also discussing the key enabling technologies and application domains that are likely to drive IoT research in the near future

    BLINC: Designing Bicycle Path Protection for Accessible Transportation Networks

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    The City of Rochester is defined by both poverty and renewed development in its center city. Often overlooked, access to transportation systems plays an important role in the prevalence of poverty. Accessing areas of Rochester that offer higher paying jobs, better schools, and a greater variety of services is directly related to car ownership, a luxury that Rochester’s poorest cannot afford. This transportation inequality is considered a contributing factor to Rochester’s poverty rate. In addition, the discontinuous urban fabric of downtown Rochester is designed for automobile, not pedestrian or bicycle traffic. Safe and continuous pedestrian and cycling pathways are often absent, though Rochester contains major employment districts, academic institutions, cultural and entertainment venues, public spaces, and basic amenities. Wide streets, city-bisecting highways, and large areas of surface parking contribute to continued use of automobiles, restricting efforts to develop Rochester into a sustainable, accessible, human-scale, and lively city. Bicycle transportation offers a viable alternative to automobile ownership and bus transportation, filling in the gap between accessibility and efficiency in Rochester’s transportation network. However, ridership deterrents such as the risk of inclement weather and lack of cycling-specific infrastructure must be addressed. A bicycle lane canopy is a potential solution for fulfilling these goals. Projects in London and Berlin have shown that investment in cycling infrastructure is effective at promoting cycling as a mode of transportation. Tensile fabric architecture and textile projects in Boston, Detroit, Denver, and New Zealand have shown that tensile structures are able to define urban spaces in expressive ways. In order to encourage bicycling as a mode of transportation by protecting cyclists and pedestrians from weather events and automobile traffic, a canopy structure was proposed. This Bicycle Lane Intelligent Network Canopy (BLINC) consists of a connected series of individual tensile fabric structures that interact to create an urban network of bike lane coverings. Potential tensile fabrics, designs and routes were analyzed to meet the needs of the tensile fabric structure; a PTFE triangular tee structure was determined to best fulfill the design intent. A BLINC route network was proposed along several existing roadways that provide access to the urban fabric of employment, education, amenity, and recreational opportunities in the city. It is designed to provide efficient, convenient, and continuous cyclist access to the core and extents of Rochester, while enhancing the sense of place that the urban framework provides. By encouraging cycling as a mode of transportation, the tensile fabric BLINC structure and proposed BLINC route network also improve community health, increase cyclist safety, lower greenhouse gas emissions, promote the local economy, and contribute to Rochester’s innovation in urban renewal
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