Citizen participation is booming, especially the number of urban bottom-up initiatives where information and communication technologies (ICT) are deployed is increasing rapidly. This growth is good news for society as recent historical research shows that the more citizens actively and persistently interfere with public issues, the more likely a society will be resilient. And yet, at the same time, a growing number of scholars argue that due to the unprecedented impact of ICT, the public sphere is at stake. How to understand both trends? How do the anti-‘public sphere’ developments relate to the growing number of citizens’ initiatives using ICT? And if these citizen initiatives can indeed be understood as manifestations of public spheres, how can ICT foster or hinder the development of these public spheres? These questions will be explored by analyzing a Dutch citizen initiative called ‘Buuv’ (an online ‘market’ place for and by local residents) from a ‘public sphere’ perspective. The author will turn to The human condition (1958) of Hannah Arendt in order to elaborate a ‘public sphere’ perspective. An Arendtian perspective (as any perspective) highlights, however, some aspects and underexposes other aspects. Furthermore, chances are that Arendt’s thoughts are somewhat outdated, in the sense that we now live in a world where the online and the offline life intertwine — an experience that is referred to with the term ‘onlife’. Bearing these remarks in mind, the author will elaborate on the value of Arendt’s ideas to 1) the endeavor of understanding current trends in society—more urban bottom-up initiatives and anti-‘public sphere’ developments due to the broad uptake of ICT—and 2) the endeavor of revitalizing the public sphere in an onlife world. IEEE copyright
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Neighborhood image processing operations on Field Programmable Gate Array (FPGA) are considered as memory intensive operations. A large memory bandwidth is required to transfer the required pixel data from external memory to the processing unit. On-chip image buffers are employed to reduce this data transfer rate. Conventional image buffers, implemented either by using FPGA logic resources or embedded memories are resource inefficient. They exhaust the limited FPGA resources quickly. Consequently, hardware implementation of neighborhood operations becomes expensive, and integrating them in resource constrained devices becomes unfeasible. This paper presents a resource efficient FPGA based on-chip buffer architecture. The proposed architecture utilizes full capacity of a single Xilinx BlockRAM (BRAM36 primitive) for storing multiple rows of input image. To get multiple pixels/clock in a user defined scan order, an efficient duty-cycle based memory accessing technique is coupled with a customized addressing circuitry. This accessing technique exploits switching capabilities of BRAM to read 4 pixels in a single clock cycle without degrading system frequency. The addressing circuitry provides multiple pixels/clock in any user defined scan order to implement a wide range of neighborhood operations. With the saving of 83% BRAM resources, the buffer architecture operates at 278 MHz on Xilinx Artix-7 FPGA with an efficiency of 1.3 clock/pixel. It is thus capable to fulfill real time image processing requirements for HD image resolution (1080 × 1920) @103 fcps.
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This paper focuses on the topical and problematic area of social innovations. The aim of this paper is to develop an original approach to the allocation of social innovations, taking into account characteristics such as the degree of state participation, the scope of application, the type of initiations as well as the degree of novelty, which will be elaborated on further in this article. In order to achieve this goal, the forty-two most successful social innovations were identified and systematized. The results of this study demonstrated that 73.5% of social innovations are privately funded, most of them operating on an international level with a high degree of novelty. Moreover, 81% of all social innovations are civic initiatives. Social innovations play an important role in the growth of both developed and less developed countries alike as highlighted in our extensive analysis
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