Pion properties at finite density

In this talk, we report our recent work on the pion weak decay constant (F_pi) and pion mass (m_pi) using the nonlocal chiral quark model with the finite quark-number chemical potential (mu) taken into account. Considering the breakdown of Lorentz invariance at finite density, the time and space components are computed separately, and the corresponding results turn out to be: F^t_pi = 82.96 MeV and F^s_pi = 80.29 MeV at mu_c ~ 320 MeV, respectively. Using the in-medium Gell-Mann Oakes-Renner (GOR) relation, we show that the pion mass increases by about 15% at mu_c.Comment: 5 pages, 2 figures, Talk given at the 4th Asia-Pacific Conference on Few-Body Problems in Physics 2008 (APFB08), 19 ~ 23 Aug 2008, Depok, Indonesi

Queuing Theoretic Analysis of Power-performance Tradeoff in Power-efficient Computing

In this paper we study the power-performance relationship of power-efficient computing from a queuing theoretic perspective. We investigate the interplay of several system operations including processing speed, system on/off decisions, and server farm size. We identify that there are oftentimes "sweet spots" in power-efficient operations: there exist optimal combinations of processing speed and system settings that maximize power efficiency. For the single server case, a widely deployed threshold mechanism is studied. We show that there exist optimal processing speed and threshold value pairs that minimize the power consumption. This holds for the threshold mechanism with job batching. For the multi-server case, it is shown that there exist best processing speed and server farm size combinations.Comment: Paper published in CISS 201

Cultural Landscapes of War and Political Regeneration

This article examines the production, uses, and reuses of cultural landscapes within contexts of warfare and political change. Ancient concerns over defense and security have led societies to construct fortification features involving extensive modifications to landscapes in many parts of the world. Social memories are often tied to these militarized landscapes, with embedded meanings and values that persist and morph through time. Due to the potential commemorative power offered by militarized landscapes, leadership strategies related to political regeneration can make use of these built environments. Consequently, the significance of these locales is not limited to military functions, as they can be appropriated by later societies for political agendas. The Co Loa site of modern-day Vietnam’s Red River delta, for instance, illustrates such a locality where warfare and politics intersect. Still standing largely intact today, the site’s monumental system of fortification features dominates the local landscape, reflecting broad alterations of the surrounding terrain. Although the system was originally put into place during the Iron Age, later societies have capitalized on the site’s physical and ideological properties for various military and sociopolitical agendas

TUPINAMBÁ PRACTICES OF VIOLENCE, WARFARE, AND CANNIBALISM IN SIXTEENTH CENTURY BRAZIL THROUGH ETHNOHISTORY AND ARCHAEOLOGY

The Tupinambá were sedentary agriculturalists inhabiting the Eastern Coast of Brazil. Sixteenth-century European explorer accounts offer rich details of Tupinambá life and warfare practices, suggesting the presence of a highly organized violence and warfare system embedded in their daily practices, animistic and cosmological beliefs, celebrations, cannibalism, and in their ideals of honor, prestige, and revenge. Building on ethnohistoric information, this article discusses the potential to further understanding of Tupinambá warfare practices through study of material culture signatures. Because archaeological studies on Tupinambá warfare are sparse, we attempt to correlate the ethnohistoric information with the types of objects and features archaeologists could reasonably expect to recover, should the accounts be accurate and the materials preserved. We argue that by using such analogies as a starting point, future researchers will be able to better test their hypotheses against the archaeological record in efforts to augment knowledge about Tupinambá lifeways

INTRODUCTION TO THE SPECIAL ISSUE: PAPERS FROM THE CONFERENCE “RECENT ADVANCES IN THE ARCHAEOLOGY OF EAST AND SOUTHEAST ASIA”

This special issue of the Journal of Indo-Pacific Prehistory Association presents some of the results of a small conference entitled “Recent Advances in the Archaeology of East and Southeast Asia.” The event was held in Madison, Wisconsin, and brought together a collection of scholars from the US and abroad. Organized by Nam Kim and Alison Carter, the conference was hosted at the University of Wisconsin-Madison (March 15-16, 2013), and was jointly sponsored by the Department of Anthropology, the Center for East Asian Studies, and the Center for Southeast Asian Studies

Entrepreneurial Homeworkers

Open Access via Springer Compact Agreement.Peer reviewedPublisher PD