A BLE-based multi-gateway network infrastructure with handover support for mobile BLE peripherals

Bluetooth Low Energy (BLE) is a popular technology within the Internet of Things. It allows low-power, star networks to be set up between a BLE gateway and multiple, power-constrained BLE devices. However, these networks tend to be static, not supporting BLE devices that can freely move around in an environment of multiple interconnected BLE gateways and perform handovers whenever necessary. This work proposes two alternative network architectures for mobile BLE peripherals. One leverages on IPv6 over BLE, whereas the other combines default BLE mechanisms with an additional custom controller. On top, we study in detail the handover mechanism that must be present in both architectures and compare the performance of both a passive and active handover approach. The passive handover approach can be set up without any extra implementation, but an active handover approach offers more proactive handover decisions and can provide a much lower handover latency. All proposed solutions have been implemented and validated on real hardware, showing the feasibility of having future infrastructures with support for mobile BLE devices

‘Anthropomorphic drones’ and colonized bodies: William Gibson’s the peripheral

William Gibson tends to write in trilogies, as his first nine novels show. These series – the Sprawl, the Bridge, and the Blue Ant trilogies – are set in three different time periods and are populated by characters who reappear from one book to the next. Given this pattern in Gibson’s writing habits, 2014’s The Peripheral can be considered a new work, set in a separate universe from any of Gibson’s previous novels. However, in terms of its philosophical position, The Peripheral is the continuation of a career-long trajectory. Gibson’s work is consistently concerned with the relationship of the individual to their society and the interface between the two, as mediated through the senses. The Sprawl trilogy and the Bridge trilogy privileged vision as the most important of the senses, particularly in cyberspace where the body is left behind and engagement with virtual reality happens mainly through the eyes gazing on a computer screen. 2003’s Pattern Recognition, the first novel in the Blue Ant trilogy which went on to include Spook Country (2007) and Count Zero (2010), began to resituate the body and specifically the haptic as key to engaging with the world while The Peripheral takes this philosophical journey further, privileging the haptic as a key site of phenomenological engagement

Measuring the welfare gain from personal computers: a macroeconomic approach

The welfare gain to consumers from the introduction of personal computers is estimated here. A simple model of consumer demand is formulated that uses a slightly modified version of standard preferences. The modification permits marginal utility, and hence total utility, to be finite when the consumption of computers is zero, implying that the good won't be consumed at a high enough price. It also bounds the consumer surplus derived from the product. The model is calibrated and estimated using standard national income and product account data. The welfare gain from the introduction of personal computers is in the range of 2 percent to 3 percent of consumption expenditure.

Measuring the Welfare Gain from Personal Computers: A Macroeconomic Approach

The welfare gain to consumers from the introduction of personal computers is estimated here. A simple model of consumer demand is formulated that uses a slightly modified version of standard preferences. The modification permits marginal utility, and hence total utility, to be finite when the consumption of computers is zero. This implies that the good won't be consumed at a high enough price. It also bounds the consumer surplus derived from the product. The model is calibrated/estimated using standard national income and product account data. The welfare gain from the introduction of personal computers is in the range of 2 to 3 percent of consumption expenditure.Compensating Variation, Computers, Electricity, Equivalent Variation, Technological Progress, Tornqvist Price Index, Welfare Gain.

From FPGA to ASIC: A RISC-V processor experience

This work document a correct design flow using these tools in the Lagarto RISC- V Processor and the RTL design considerations that must be taken into account, to move from a design for FPGA to design for ASIC

Implementation of RTOS to the WSN node

Bezdrátové senzorické sieťe zväčša používajú `event-driven` operačné systémy. Táto práca diskutuje výhody nevýhody použitia RTOS v bezdrátových senzorických sieťach. Najvhodnejší RTOS je vybratý a sú podniknuté všetky kroky aby bolo možne demonštrovať schopnosť mikrokontrolérov Gecko od EnergyMicro prevádzkovať tento RTOS s nízkou spotrebou energie a demonštrovať jednoduchú bezdrátovú komunikáciu s Atmel AT86RF212 rádiami.Wireless sensors networks mostly use event-driven OSes. This works discusses pros and cons of using RTOS in wirless sensors networks. A most appropriate RTOS is chosen and all necessary steps are undergone to demonstrate EnergyMicro Gecko MCU's ability to run the RTOS with low energy consumption and demonstrate wireless simple communication with Atmel AT86RF212 radios.

Group Member Prototypicality and Intergroup Negotiation: How One's Standing in the Group Affects Negotiation Behaviour

How does a representative's position in the group influence behaviour in intergroup negotiation? Applying insights from the social identity approach (specifically self-categorization theory), the effects of group member prototypicality, accountability, and group attractiveness on competitiveness in intergroup bargaining were examined. As representatives of their group, participants engaged in a computer-mediated negotiation with a simulated outgroup opponent. In Exp. 1 (N = 114), representatives with a peripheral status in the group sent more competitive and fewer cooperative messages to the opponent than did prototypical representatives, but only under accountability. Exp. 2 (N = 110) replicated this finding, and showed that, under accountability, peripherals also made higher demands than did prototypicals, but only when group membership was perceived as attractive. Results are discussed in relation to impression management and strategic behaviour.Group Member Prototypicality;Intergroup Negotiation;Negotiation Behaviour;Representatives Bahaviour