A macroscopic model for high intensity radiofrequency signal detection in swarm robotics systems

In recent years, there has been a growing interest in resource location in unknown environments for robotic systems, which are composed of multiple simple robots rather than one highly capable robot [M. Sempere, F. Aznar, M. Pujol, and R. Rizo, On cooperative swarm foraging for simple, non explicitly connected, agents, 2010]. This tradeoff reduces the design and hardware complexity of the robots and removes single point failures, but adds complexity in algorithm design. The challenge is to programme a swarm of simple robots, with minimal intercommunication and individual capability, to perform a useful task as a group. This paper is focused on finding the highest intensity area of a radiofrequency (RF) signal in urban environments. These signals are usually more intense near the city centre and its proximity, since in these zones the risk of signal saturation is high. RF radiation (RFR) is boosted or blocked mainly depending on orography or building structures. RF providers need to supply enough coverage, setting up different antennas to be able to provide a minimum quality of service. We will define a micro/macroscopic mathematical model to efficiently study a swarm robotic system, predict their long-term behaviour and gain insight into the system design. The macroscopic model will be obtained from Rate Equations, describing the dynamics of the swarm collective behaviour. In our experimental section, the Campus of the University of Alicante will be used to simulate our model. Three RFR antennas will be taken into account, one inside our Campus and the other two in its perimeter. Several tests, that show the convergence of the swarm towards the RFR, will be presented. In addition, the obtained RFR maps and the macroscopic behaviour of the swarm will be discussed.This work has been supported by the Spanish Ministerio de Ciencia e Innovación, project TIN2009-10581

Drones, Clones, and Alpha Babes

The Star Trek franchise represents one of the most successful emanations of popular media in our culture. The number of books, both popular and scholarly, published on the subject of Star Trek is massive, with more and more titles printed every year. Very few, however, have looked at Star Trek in terms of the dialectics of humanism and the posthuman, the pervasiveness of advanced technology, and the complications of gender identity. In Drones, Clones and Alpha Babes, Diana Relke sheds light on how the Star Trek narratives influence and are influenced by shifting cultural values in the United States, using these as portals to the sociopolitical and sociocultural landscapes of the United States, pre- and post-9/11. From her Canadian perspective, Relke focuses on Star Trek's uniquely American version of liberal humanism, extends it into a broader analysis of ideological features, and avoids a completely positive or negative critique, choosing instead to honour the contradictions inherent in the complexity of the subject

Legal Anarchism: Does Existence Need to Be Regulated by the State

This thesis asks does existence need to be regulated by the State? The answer relies on legal anarchism, an interdisciplinary, particularly criminal law and philosophy, and unconventional research project based on multiple methodologies with a specific language. It critically analyzes and consequently rejects State law because of its unjustified and unnecessary nature founded on unlimited violence and white-collar crime (Chapters 1-4), on the one hand, and suggests some alternatives to the Governmental legal system founded on agreement and peace (Chapter 5), on the other hand. It furthermore takes into account the elements of time and space, which means the ecological, local, national, regional, and international aspects of the legal system, in its analysis, critiques, and models

Race and Gender in Modern Western Warfare

This book fills a gap in the historiographical and theoretical fields of race, gender, and war. In brief, Race and Gender in Modern Western Warfare (RGMWW) offers an introduction into how cultural constructions of identity are transformed by war and how they in turn influence the nature of military institutions and conflicts. Focusing on the modern West, this project begins by introducing the contours of race and gender theories as they have evolved and how they are employed by historians, anthropologists, sociologists, and other scholars. The project then mixes chronological narrative with analysis and historiography as it takes the reader through a series of case studies, ranging from the early nineteenth century to the Global War of Terror. The purpose throughout is not merely to create a list of so-called "great moments" in race and gender, but to create a meta-landscape in which readers can learn to identify for themselves the disjunctures, flaws, and critical synergies in the traditional memory and history of a largely monochrome and male-exclusive military experience. The final chapter considers the current challenges that Western societies, particularly the United States, face in imposing social diversity and tolerance on statist military structures in a climates of sometimes vitriolic public debate. RGMWW represents our effort to blend race, gender, and military war, to problematize these intersections, and then provide some answers to those problems

World History, Volume 2: From 1400

World History, Volume 2: from 1400 is designed to meet the scope and sequence of a world history course from 1400 offered at both two-year and four-year institutions. Suitable for both majors and non majors World History, Volume 2: from 1400 introduces students to a global perspective of history couched in an engaging narrative. Concepts and assessments help students think critically about the issues they encounter so they can broaden their perspective of global history. A special effort has been made to introduce and juxtapose people’s experiences of history for a rich and nuanced discussion. Primary source material represents the cultures being discussed from a firsthand perspective whenever possible. World History, Volume 2: from 1400 also includes the work of diverse and underrepresented scholars to ensure a full range of perspectives

Bowdoin Orient v.133, no.1-24 (2003-2004)

https://digitalcommons.bowdoin.edu/bowdoinorient-2000s/1004/thumbnail.jp

The Sky is our Roof, the Earth our Floor: Orang Rimba Customs and Religion in the Bukit Duabelas Region of Jambi, Sumatra

This is an ethnographic study of the Orang Rimba ('people of the forest'), a Malay-speaking minority group who traditionally lived throughout the lowland rainforests of Jambi, Sumatra. The Orang Rimba have much in common with surrounding Malay peoples, including a similar local dialect and variants of regional Malay customs and beliefs. They are different from the Malay and other Austronesian peoples in that they have a unique, mobile, flexible economy that traditionally shifts in and out of periods of swidden gardening and a very nomadic life based on digging for wild yams, largely upon death. They have an egalitarian social system based on sharing and reciprocity, which occurs within the context of a system of relationships in which women have great rights over forest resources and extraordinary distribution rights. They are also unique for their traditional non-Islamic religious beliefs, which they believe are crucial towards maintaining their way of life in the forest based on maintaining separation with the outside world. ... ¶ This thesis explores how the Orang Rimba maintain their distinct social identity as 'the people of the forest' through an examination of their customs, beliefs and religion (adat), and their belief and ritual surrounding fruits and the annual season of fruits, a primary season in the lowland dipterocarp forests of Sumatra. Throughout the thesis, I explore some of the key concepts, structural categories (forest-village, upstream-downstream, mobility-sedentism, hot-cold, and reason-passion), and metaphor that run through their system of beliefs and religion, and how some of these beliefs influence their social, moral and cosmological orders, relations amongst themselves, and with the outside world. ..