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Evaluation of Modulo in a Multi-Channel 802.11 Wireless Network

Hamid R. Arabnia; Victor A. Clincy; Leonidas Deligiannidis; George Jandieri; Ashu M. G. Solo; and Fernando G. Tinetti (Editors) Mercury Learning and Information PDF

Int'l Conf. Wireless Networks | ICWN'13 |


Evaluation of Modulo in a Multi-Channel 802.11

Wireless Network

Dr A. Paraskelidis, Dr Mo Adda.

Pervasive Computing Research Group, School of Computing, University of Portsmouth, Portsmouth,

United Kingdom.

Abstract - Since the introduction of the IEEE 802.11 standard, researchers have moved from the concept of deploying a single channel and proposed the u tilisation of multiple channels within a wireless network. This new scheme posed a new problem, the ability to coordinate the various channels and the majority of the proposed works focus on mechanisms that would reduce the adjacent channel interference caused by the use of partially overlapping channels. The proposed idea in this paper borrows the concept of network segregation, firstly introduced for security purposes in wired networks, by dividing a wireless network into smaller independent subnetworks and in collaboration with a channel assignment, the Modulo. Modulo defines a set of rules that nodes should obey to when they transmit data.

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Medium 9780253345677

18. Black Easter

Thomas Goodrich Indiana University Press ePub

UNLIKE THE DAY BEFORE, Sunday, April 16, 1865, broke bright and beautiful over the land. From Maine to Missouri, the dark clouds and rain that had seemingly engulfed the world gave way to warmth and sunshine. All the same, in the hearts and minds of millions, no amount of blue sky or green grass could erase the deep gloom of “Black Easter.” Across the nation, as if fleeing some great calamity, Americans crowded into churches until they could hold no more. In the president’s hometown of Springfield, the places of worship were filled to overflowing, and many pressed close to the doors and windows to hear.1

On New York Avenue in Washington, the Presbyterian church that Lincoln had attended was quickly packed, and hundreds were forced to listen from outside.2 The space where the first family normally sat was empty now, draped in black.3

“I sat . . . directly behind the vacant pew of the President,” General Lewis Parsons wrote to his mother. “The remarks and prayers of Dr. G[urley] were impressive and solemn—but nothing so solemn to me as the recollection of seeing Mr. Lincoln in the same now vacant seat when I last attended that church—His greeting then was so kind and he so full of life.”4

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Medium 9781442276147

We Learn Together

Collections; Juilee Decker Rowman & Littlefield Publishers ePub

We Learn TogetherCrowdsourcing as Practice and Method in the Smithsonian Transcription CenterMeghan FerriterProject Coordinator of the Transcription Center at the Smithsonian Institution, ferriterm@si.eduChristine RosenfeldPh.D. candidate in Cultural Studies at George Mason University, crosenfe@gmu.eduDana BoomerIndependent Researcher, dana_boomer@yahoo.comCarla BurgessIndependent Researcher, Pittsboro, North Carolina, thecarlaburgess@gmail.comSiobhan LeachmanIndependent Researcher, Wellington, New Zealand, Siobhan_leachman@yahoo.co.nzVictoria LeachmanIndependent Scholar, Wellington, New Zealand, victoria.leachman@gmail.comHeidi MosesIndependent Scholar, Sydney, Nova Scotia, hmmoses@gmail.comFelicia PickeringResearch Collaborator (retired Ethnology Museum Specialist), Department of Anthropology, NMNH, Smithsonian Museum Support Center, pickerif@si.eduMegan E. Shuler

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Medium 9781855752665

CHAPTER FOUR. Some reflections on once-a-week psychotherapy

Karnac Books ePub

Prophecy Coles

What are the differences between once-a-week psychotherapy and psychoanalysis? It is very difficult to think about the differences clearly and rationally because the concept of once-a-week psychotherapy has been clouded by episte-mological and political issues. For instance, the political difficulties have been well enshrined by Freud (1919a [1918]) when he pointed out that psychoanalysis was only available to a small class of people: “The necessities of our existence limit our work to well-to-do classes” (p. 166). He went on to say that the poor were suffering from neuroses just as much as the rich, and he hoped that “the conscience of society will awake and remind us that the poor man should have just as much right to assistance for his mind” (p. 167). He added that “institutions or out-patient clinics will be started to which analytically trained physicians will be appointed” (p. 167). When this does happen, he continued, “we shall be faced with the task of adapting our technique to the new conditions … our therapy will compel us to alloy the pure gold of analysis freely with the copper of direction” (p. 168, emphasis added). One result of Freud’s metaphor has meant that psychotherapy has been considered, politically, the poor man’s option, and therefore, theoretically, trainings in psychotherapy have suffered from a sense of being the poor relation of psychoanalysis. A positive interpretation of the metaphor would be to remember that copper, though it is an alloy, is not only stronger than gold but more serviceable than the pure metal. However, at this moment in the history of psychoanalysis, psychotherapy—and most especially once-a-week work —is implicitly deemed to be of less value by the psychoanalytic establishment. This attitude, then, affects the way psychoanalytic psychotherapy thinks about once-a-week work. It is rare, in private practice, for it to be recommended as the treatment of choice, whereas in the public sector it is most often the only treatment available.

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Draiby, Piet; Seidenfaden, Kirsten Karnac Books ePub


When clients arrive in our consultation room, cold winds of conflict tend to be blowing in their relationship and neither of the partners can find shelter from the wind.

In our experience, many believe that their partner holds the key to resolving these conflicts. The partner must understand and learn something or other before the relationship can improve. My partner must change before I can get better and develop …

For this reason, many clients initially look astonished when we tell them that we are not interested in discussing who should change. Our point is we want clients to learn to appreciate their conflicts and welcome their frustrations, because these are the seeds of understanding, reconciliation, and release.

If we attempt to fight criticism and frustrations in our lives, the result will be that we cut ourselves off from an enormous source of energy and development. The energy sustaining our frustra -tions should, in fact, be used as a starting point for moving be -yond the power struggles that wear down so many relationships.

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