Moving the centre to design social media in rural Africa

Efforts to design voice-based, social media platforms for low-literacy communities in developing countries have not widened access to information in the ways intended. This article links this to who describes the relations that constitute personhood and how these relations are expressed in designing and deploying systems. I make these links oriented by critique in human–computer interaction that design continues a history of colonialism and embeds meanings in media that disrupt existing communication practices. I explore how we translated ‘logics’ about sociality through logics located outside of the rural South African community that we targeted for design and deployment. The system aimed to enable inhabitants to record, store and share voice files using a portable, communally owned display. I describe how we engaged with inhabitants, to understand needs, and represented and abstracted from encounters to articulate requirements, which we translated into statements about technology. Use of the system was not as predicted. My analysis suggests that certain writing cultures, embedded in translations, reify knowledge, disembody voices and neglect the rhythms of life. This biases social media towards individualist logics and limits affordances for forms, genres and other elements of communication that contribute to sociality. Thus, I propose oral practices offer oppositional power in designing digital bubbles to support human togetherness and that we can enrich design by moving the centre—a phrase taken from Ngu˜gı˜ wa Thiong’o (Moving the centre: the struggle for cultural freedoms, James Currey, London, 1993) who insists that liberation from colonialism requires plural sites of creativity. To realize this potential, we need radically different approaches that enable symmetrical translation.CSIR-Meraka, South Africa and partially by EPSRC Grant (EP/H042857/1).http://link.springer.com/journal/1462017-02-27hb201

Design Data Collection with Skylab Microwave Radiometer-Scatterometer S-193, Volume 1

The author has identified the following significant results. Observations with S-193 have provided radar design information for systems to be flown on spacecraft, but only at 13.9 GHz and for land areas over the United States and Brazil plus a few other areas of the world for which this kind of analysis was not made. Observations only extended out to about 50 deg angle of incidence. The value of a sensor with such a gross resolution for most overland resource and status monitoring systems seems marginal, with the possible exception of monitoring soil moisture and major vegetation variations. The complementary nature of the scatterometer and radiometer systems was demonstrated by the correlation analysis. Although radiometers must have spatial resolutions dictated by antenna size, radars can use synthetic aperture techniques to achieve much finer resolutions. Multiplicity of modes in the S-193 sensors complicated both the system development and its employment. An attempt was made in the design of the S-193 to arrange optimum integration times for each angle and type of measurement. This unnecessarily complicated the design of the instrument, since the gains in precision achieved in this way were marginal. Either a software-controllable integration time or a set of only two or three integration times would have been better

In the spirit of engagement: memories and the sensorium in Algonquin canoe building

This project develops cross-cultural ontologies of memory that are explored dynamically through multimodal sensory pathways. Considering the vast and varying theories on memory, the near universal adoption of storage-and-retrieval metaphors, such as the memory trace, which posits that memories are embodied ‘inside’ in our central nervous system or embedded ‘out there’ in our material environment, remains problematic. Using Material Engagement Theory (MET) as an experimental research model in cognitive archaeology, I conduct collaborative ethnographic fieldwork building birch bark canoes with the Algonquin First Nations. Together we investigate the mnemonic flow that occurs between sensing bodies and living geographies. I propose the possibility that the human mind may possess underdeveloped sensory pathways involved in the transmission of transgenerational memories and the recovery of long-lost wisdoms. I excavate the sensorium through the archaeoacoustics of forest listening to uncover the ways in which memories are deeply sedimented in the sonic worlds of nature. With the helpful concept of mimesis, this ethnography encourages multiple forms of listening, where natural sounds are fully canvased for what they are capable of teaching us about how to live. An examination of the haptic dimensions of the mocataugan (crooked knife) presents a compelling case for how material inheritances provide sensuous similarities that cohabite past and present moments of our cognitive becoming. These sensory attunements challenge the popular belief that memories are imprinted and stored. The ethnographic findings suggest ancestral memories are imminent, temporally persistent, actively participating and ready-at-hand to be enacted through our material engagements and our skillful dealings with the world. Understanding the ways traditional territory and natural resources sustain cultural memory over vast periods of time is of vital importance to the Algonquin. This research encourages us to think about how to sensibly take our place in the larger ecology of mind that sustains us and is increasingly under considerable strain

Products and Services

Today’s global economy offers more opportunities, but is also more complex and competitive than ever before. This fact leads to a wide range of research activity in different fields of interest, especially in the so-called high-tech sectors. This book is a result of widespread research and development activity from many researchers worldwide, covering the aspects of development activities in general, as well as various aspects of the practical application of knowledge

Performance Analysis For Wireless G (IEEE 802.11 G) And Wireless N (IEEE 802.11 N) In Outdoor Environment

This paper described an analysis the different capabilities and limitation of both IEEE technologies that has been utilized for data transmission directed to mobile device. In this work, we have compared an IEEE 802.11/g/n outdoor environment to know what technology is better. the comparison consider on coverage area (mobility), through put and measuring the interferences. The work presented here is to help the researchers to select the best technology depending of their deploying case, and investigate the best variant for outdoor. The tool used is Iperf software which is to measure the data transmission performance of IEEE 802.11n and IEEE 802.11g

Performance analysis for wireless G (IEEE 802.11G) and wireless N (IEEE 802.11N) in outdoor environment

This paper described an analysis the different capabilities and limitation of both IEEE technologies that has been utilized for data transmission directed to mobile device. In this work, we have compared an IEEE 802.11/g/n outdoor environment to know what technology is better. The comparison consider on coverage area (mobility), throughput and measuring the interferences. The work presented here is to help the researchers to select the best technology depending of their deploying case, and investigate the best variant for outdoor. The tool used is Iperf software which is to measure the data transmission performance of IEEE 802.11n and IEEE 802.11g

Knowledge management framework based on brain models and human physiology

The life of humans and most living beings depend on sensation and perception for the best assessment of the surrounding world. Sensorial organs acquire a variety of stimuli that are interpreted and integrated in our brain for immediate use or stored in memory for later recall. Among the reasoning aspects, a person has to decide what to do with available information. Emotions are classifiers of collected information, assigning a personal meaning to objects, events and individuals, making part of our own identity. Emotions play a decisive role in cognitive processes as reasoning, decision and memory by assigning relevance to collected information. The access to pervasive computing devices, empowered by the ability to sense and perceive the world, provides new forms of acquiring and integrating information. But prior to data assessment on its usefulness, systems must capture and ensure that data is properly managed for diverse possible goals. Portable and wearable devices are now able to gather and store information, from the environment and from our body, using cloud based services and Internet connections. Systems limitations in handling sensorial data, compared with our sensorial capabilities constitute an identified problem. Another problem is the lack of interoperability between humans and devices, as they do not properly understand human’s emotional states and human needs. Addressing those problems is a motivation for the present research work. The mission hereby assumed is to include sensorial and physiological data into a Framework that will be able to manage collected data towards human cognitive functions, supported by a new data model. By learning from selected human functional and behavioural models and reasoning over collected data, the Framework aims at providing evaluation on a person’s emotional state, for empowering human centric applications, along with the capability of storing episodic information on a person’s life with physiologic indicators on emotional states to be used by new generation applications

Evaluation of the development and application of multimedia computer assisted learning in Higher Education.

This thesis deals with approaches to the evaluation of multimedia computer assisted learning in higher education. The thesis is presented in two parts. The first part consists mainly of a literature based review of the rationale and methods employed in the development of multimedia CAL systems focusing on the ability of such systems to deliver a variety of pedagogic aims and objectives which the literature on the subject generally attributes to them. This was done in order to identify and examine the important features which should be incorporated in the effective evaluation of such systems. 1) the pedagogical basis of multimedia learning environments with particular reference to the mechanism by which they claim to encourage an approach to learning which facilitates 'deep' rather than 'shallow' learning' (Chapters 3 and 4); 2) the basis on which multimedia CAL systems claim to provide interactive learning environments which allow the teaching materials to be tailored by learners to accommodate their own individual preferences for adopting particular learning strategies. In particular this focused on the importance of individual learning styles and learners' degree of computer confidence (Chapter 5); 3) the institutional/delivery factors which must be understood to explain fully the context in which evaluations are carried out and which may have important effects on the outcomes of evaluation (Chapter 6). This literature review, together with a practical survey of a range of existing CAL courseware and an e-mail survey of CAL developers provides the basis for presenting an approach to evaluation which differentiates systems on the basis of the pedagogic approach they adopt and the context in which they are implemented. Finally, a critical review of existing evaluation methods was undertaken and important elements within these methods were incorporated into a new framework for evaluation. The framework provides a tool for determining an evaluation strategy that encompasses all stages of development, formative and summative evaluation of CAL courseware. Evaluation is based on the explicit aims and objectives of the courseware being provided and is moderated by contextual factors that define the pedagogical approach being taken, any individual learner differences that must be taken into account, and the institutional/delivery context within which the courseware is used. An analysis of the implications of the framework when formulating an evaluation strategy demonstrates weaknesses in the assessment instruments currently being used in evaluation studies - particularly for providing reliable measures of 'learning effect' as part of summative evaluation and also with respect to accurate quantification of costs associated with development and use of CAL courseware. The second part of the thesis tests the framework. The approach taken was to develop and formatively and summatively assess a multimedia CAL system used to teach parts of a course on bibliographic classification to students at the Robert Gordon University in Aberdeen. Qualitative and quantitative tests to accomplish this are described and the result of statistical analyses of learner performance when using the system are presented. This empirical study provides further insights into the practical problems involved in developing and evaluating a multimedia CAL system and in particular highlights: 1) the influence which individual learning style (as measured by the Gregorc Style Delineator) has on student performance in a context in which postgraduate students were required to use the CAL courseware rather than attend lectures - results indicate that CAL does not serve all learners equally; 2) the importance of the delivery context in a study in which undergraduate students were provided with CAL materials to supplement the delivery of their course. The evaluation framework was found to be a robust framework for developing and testing didactic teaching packages which were developed in the context of improving the quality of the teaching and learning of bibliographic classification to both undergraduate and postgraduate students. Recommendations are provided for future research based on using the framework to explore other contexts in which courseware is developed and implemented