Effectiveness Evaluation of Replacement Policies for On-Chip Caches in Multiprocessors

A Cache plays a vital role in improving performance in the multicore environment, especially the Last Level Cache (LLC). The improvements in performance are based on the block size, associativity, and replacement policies. Most of the papers concentrate on traditional Least Recently Used (LRU) based replacement policies for their replacement decisions. Unfortunately, the replacement decisions do not enhance performance of the cache as expected. An enhanced modified Pseudo LRU policy is proposed, which is an approximation of LRU. The proposed methodology uses counters to enhance the confidence of replacement decisions based on the history of the replaceable blocks in cache. It is very clear from the Simulation results that the replacement scheme proposed exhibits better performance improvement in terms of miss ratio of about 3% and energy efficiency of about 2% on an average.

Author(s):  
Christopher Brooke

This is the first full-scale look at the essential place of Stoicism in the foundations of modern political thought. Spanning the period from Justus Lipsius's Politics in 1589 to Jean-Jacques Rousseau's Emile in 1762, and concentrating on arguments originating from England, France, and the Netherlands, the book considers how political writers of the period engaged with the ideas of the Roman and Greek Stoics that they found in works by Cicero, Seneca, Epictetus, and Marcus Aurelius. The book examines key texts in their historical context, paying special attention to the history of classical scholarship and the historiography of philosophy. The book delves into the persisting tension between Stoicism and the tradition of Augustinian anti-Stoic criticism, which held Stoicism to be a philosophy for the proud who denied their fallen condition. Concentrating on arguments in moral psychology surrounding the foundations of human sociability and self-love, the book details how the engagement with Roman Stoicism shaped early modern political philosophy and offers significant new interpretations of Lipsius and Rousseau together with fresh perspectives on the political thought of Hugo Grotius and Thomas Hobbes. The book shows how the legacy of the Stoics played a vital role in European intellectual life in the early modern era.


2020 ◽  
Vol 09 ◽  
Author(s):  
Ahmed M. Abu-Dief ◽  
W. S. Mohamed

Abstract:: Sustainability environmental lack is a growing and pivotal mater due to the issues: such as disturbances associated with biodiversity pollution, and climate change. Pollutants are the major cause of these environmental threats in the atmosphere. In recently, the nano-based photocatalyst is at the forefront of the author's interest because of its promising potential as a green chemical-based compound, high catalytic activity, the suitable and controllable surface area for wastewater treatment. Semiconductor materials in nanosized scale have electronic and optical properties depend on its building block size, which plays a vital role in developing smart materials that are well efficient for simultaneously destroying harmful chemical contaminants from our environment. This makes these materials used in many possible industrial applications such as water purification. In this Review, we report the most significant results contributing to progress in the area of environmental hazardous pollutant detection and removal focused on water purification especially through photo-catalysis to give readers an overview of the present research trends. Moreover, we analyze previous studies to indicate key principles of photo-catalysis and provide guidelines that can be used to fabricate more efficient photocatalysts.


Author(s):  
Steven J. R. Ellis

Tabernae were ubiquitous among all Roman cities, lining the busiest streets and dominating their most crowded intersections, and in numbers not known by any other form of building. That they played a vital role in the operation of the city—indeed in the very definition of urbanization—is a point too often under-appreciated in Roman studies, or at best assumed. The Roman Retail Revolution is a thorough investigation into the social and economic worlds of the Roman shop. With a focus on food and drink outlets, and with a critical analysis of both archaeological material and textual sources, Ellis challenges many of the conventional ideas about the place of retailing in the Roman city. A new framework is forwarded, for example, to understand the motivations behind urban investment in tabernae. Their historical development is also unraveled to identify three major waves—or, revolutions—in the shaping of retail landscapes. Two new bodies of evidence underpin the volume. The first is generated from the University of Cincinnati’s recent archaeological excavations into a Pompeian neighborhood of close to twenty shop-fronts. The second comes from a field survey of the retail landscapes of more than a hundred cities from across the Roman world. The richness of this information, combined with an interdisciplinary approach to the lives of the Roman sub-elite, results in a refreshingly original look at the history of retailing and urbanism in the Roman world.


Author(s):  
Joachim Seng

Abstract : In his autobiographical accounts, Johann Wolfgang Goethe emphasizes the vital role that his father’s collections of books and art had for his own Bildung. In fact, the library of Johann Caspar Goethe (1710–1782) played a vital role in Goethe’s education and early studies while also attesting to his family background and status. However, soon after Johann Caspar’s death, his library was dissolved – and whereas Johann Wolfgang Goethe and other family members integrated some of the books into their own collections, the majority of objects were sold and dispersed. Today, a handwritten catalog commissioned by Goethe’s mother, Catharina Elisabeth Goethe, just before the sale (in 1793/1794), is a critical tool for reconstructing the collection. This article describes the history of Johann Caspar Goethe’s library, its dispersal as well as the efforts to reconstruct the collection. As the retrieval of the original copies from Johann Caspar’s library and the re-establishment of the original collection were impossible, the Freies Deutsches Hochstift has managed to collect equivalent titles and editions in order to restore a library that allows visitors to the Goethe-Haus in Frankfurt to learn about Goethe’s family background, the cultural setting of his upbringing, and early influences on his education.


2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Uzair Abbas ◽  
Bushra Imdad ◽  
Sikander Adil Mughal ◽  
Israr Ahmed Baloch ◽  
Afshan Mehboob Khan ◽  
...  

Abstract Objective MicroRNAs are known to regulate 60% of genes at post translational level. MicroRNAs including Micro RNA-29 family play a vital role in cellular activities and have validate role in numerous metabolic disorders inclusive of diabetes mellitus and its complications. While micro RNA profile changes years before the occurrence of disease. This cross-sectional study was conducted in non-diabetic adults of diabetic and non-diabetic parents to explore the early changes in expression of micro RNA-29 family as it can be served as early biomarker of type 2 diabetes in non-diabetic adults. This study was conducted from January 2019 to January 2021. Micro RNA was extracted from plasma of 50 participants and expression was compared through qPCR. While data was analyzed through SPSS version 21.0. Results 29a and 29b had lower expression in participants with family history of DM compared to those having no family history of DM (P < 0.0001). While micro RNA 29c was found to be significantly higher in participants with positive family history of type 2 diabetes as compared to those without family history of diabetes (P = 0.001).


2009 ◽  
Vol 5 (1) ◽  
pp. 33-52 ◽  
Author(s):  
Saoucene Mahfoudh ◽  
Pascale Minet

In wireless ad hoc and sensor networks, an analysis of the node energy consumption distribution shows that the largest part is due to the time spent in the idle state. This result is at the origin of SERENA, an algorithm to SchEdule RoutEr Nodes Activity. SERENA allows router nodes to sleep, while ensuring end-to-end communication in the wireless network. It is a localized and decentralized algorithm assigning time slots to nodes. Any node stays awake only during its slot and the slots assigned to its neighbors, it sleeps the remaining time. Simulation results show that SERENA enables us to maximize network lifetime while increasing the number of user messages delivered. SERENA is based on a two-hop coloring algorithm, whose complexity in terms of colors and rounds is evaluated. We then quantify the slot reuse. Finally, we show how SERENA improves the node energy consumption distribution and maximizes the energy efficiency of wireless ad hoc and sensor networks. We compare SERENA with classical TDMA and optimized variants such as USAP in wireless ad hoc and sensor networks.


Author(s):  
Yan Cai ◽  
Liang Ran ◽  
Jun Zhang ◽  
Hongbo Zhu

AbstractEdge offloading, including offloading to edge base stations (BS) via cellular links and to idle mobile users (MUs) via device-to-device (D2D) links, has played a vital role in achieving ultra-low latency characteristics in 5G wireless networks. This paper studies an offloading method of parallel communication and computation to minimize the delay in multi-user systems. Three different scenarios are explored, i.e., full offloading, partial offloading, and D2D-enabled partial offloading. In the full offloading scenario, we find a serving order for the MUs. Then, we jointly optimize the serving order and task segment in the partial offloading scenario. For the D2D-enabled partial offloading scenario, we decompose the problem into two subproblems and then find the sub-optimal solution based on the results of the two subproblems. Finally, the simulation results demonstrate that the offloading method of parallel communication and computing can significantly reduce the system delay, and the D2D-enabled partial offloading can further reduce the latency.


2021 ◽  
Vol 2021 (2b) ◽  
pp. 35-40
Author(s):  
I. Stambler ◽  

Celebrating the 30th anniversary of Ukraine's independence, it is important to remember the historical achievements of Ukrainian science, to honor the heroes of the science of the past and to draw inspiration from their achievements for the development of science of the future. In this regard, the history of medicine, as a special academic discipline, plays a vital role an important academic and civic role, as it helps to trace the medical scientific achievements of the past and draw conclusions about their strengths and priorities for future national and international growth and development. Analyzing the scientific strengths and priorities of science and medicine in Ukraine, it is safe to say that biomedical gerontology is one of the most important scientific and historical values and priorities of Ukraine on a global scale. There are good reasons to continue and develop this tradition, building on the strengths that exist, drawing inspiration from the past and looking to the future. Currently, the development of biomedical gerontology is becoming increasingly important for Ukraine, given the rapid aging of the country's population. The resulting economic and social problems are related to the aging population, which puts biomedical gerontology as a discipline that seeks solutions to achieve healthy and productive longevity, at the forefront of social significance, demanding further development and support of this field for the sake of internal national stability, and to preserve the country's international contribution. It is hoped that the outstanding history of biomedical gerontology in Ukraine, its honorable historical place in national development and international cooperation, will inspire further growing support and development of this field in Ukraine and abroad.


2017 ◽  
Vol 31 (3) ◽  
pp. 322-340 ◽  
Author(s):  
David C Hendrickson

This essay offers a constitutional perspective on the American encounter with the problem of international order. Its point of departure is the American Founding, a subject often invisible in both the history of international thought and contemporary International Relations theory. Although usually considered as an incident within the domestic politics of the United States, the Founding displays many key ideas that have subsequently played a vital role in both international political thought and IR theory. The purpose of this essay is to explore these ideas and to take account of their passage through time, up to and including the present day. Those ideas shine a light not only on how we organize our scholarly enterprises but also on the contemporary direction of US foreign policy and the larger question of world order.


2017 ◽  
pp. 263-276
Author(s):  
Maciej Walkowiak

The paper is mainly concerned with Gottfried Benn’s complex attitude to the state and history. By means of introductory prefigurations, such as existential tensions related to the conflict between Protestant ethics and modern aesthetics, there emerges Benn’s difficult and complex relation to the state as such, seen as a product of history, and to its particular examples, starting from the Second Reich until the initial phase of West Germany. Friedrich Nietzsche’s philosophy, and in particular the philosophy of art, is of great importance in this context. This issue is discussed using Benn’s key works such as Roman des Phänotyp or Doppelleben. Benn’s literary and life self-creations played a vital role in his relations with the political reality and the state, which is discussed at the end of this analysis. His ambivalent relation to early West Germany has a strong biographical basis, i.e. his involvement with the history of the Nazi Germany on the one hand, and on the other – the period of his literary fame at the end of his life.


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