Search results for "error"

El “Prestige” y otras fechorías

2003

Terrorism and the Allegory of the Lone Wolf: From 9/11 to COVID-19

2021

The lone wolf is a personality type that symbolizes individualism and a deep yet sometimes dangerous quest for self-search. At its very extreme, this search turns out to become hatred for anything that these wolves cannot identify themselves with. In this regard, even some societies are lone wolves. We have lone wolf groups, communities, societies, and even nation-states. By analysis, terrorists carry certain traits of lone wolves, although not every lone wolf would be(come) a terrorist. Some rather grow into hermits and saints. Globalization, a central theme of this book, has a lot to do with the development of the lone wolf trait the way we see it now. Instead of flattening the world’s cu…

ARQ Aware Scheduling for the IEEE 802.16 Base Station

2008

The IEEE 802.16 technology defines the ARQ mechanism that enables a connection to resend data at the MAC level if an error is detected. In this paper, we analyze the ARQ aware scheduling for the 802.16 base station. In particular, we consider how the BS scheduler can account for the ARQ block size, absence of the ARQ block rearrangement, and the ARQ transmission window. We propose a set of constraints that can be applied to any base station scheduler algorithm. To test them, we run a number of simulation scenarios. The simulations results confirm that the ARQ aware scheduling can improve the overall performance.

Performance analysis of the ieee 802.16 arq mechanism

2007

The IEEE 802.16 technology defines the ARQ mechanism that enables a connection to resend data at the MAC level if an error is detected. In this paper, we analyze the key features and parameters of the 802.16 ARQ mechanism. In particular, we consider a choice for the ARQ feedback type, an algorithm to build block sequences, a scheduling of the ARQ feedbacks and retransmissions, the ARQ block rearrangement, ARQ transmission window and ARQ block size. We run a number of simulation scenarios to study these parameters and how they impact a performance of application protocols. The simulation results reveal that the ARQ mechanism and its correct configuration play an important role in transmittin…

On ARQ feedback intensity of the IEEE 802.16 ARQ mechanism

2008

The IEEE 802.16 standard defines the ARQ mechanism as a part of the MAC layer. The functioning of the ARQ mechanism depends on a number of parameters. The IEEE 802.16 specification defines them but it does not provide concrete values and solutions. We ran simulation scenarios to study how the ARQ feedback intensity impacts the performance of application protocols. The simulation results reveal that a low ARQ feedback intensity results only in a marginal improvement. Though it is possible to optimize the ARQ feedback intensity, it is reasonable to rely upon more frequent ARQ feedback messages as they do not result in a performance degradation. At the same time, ARQ connections, which work on…

Testing for Government Intertemporal Solvency: A Smooth Transition Error Correction Model Approach

2001

Applied macroeconomists have tested for the government intertemporal solvency condition by either testing for linear stationarity in the total government deficit series or testing for linear cointegration between total government spending and total tax revenues. A number of authors have focused, in particular, on structural breaks in the government deficit process. In this paper, we use a smooth transition error correction model to test and estimate a shift in the adjustment toward a linear cointegration relationship between the government spending to output ratio and the total tax revenues to output ratio. Estimation results show that government authorities react only to large (in absolute…

Terrorism in Argentina: government as its own worst enemy

2005

Il caso Sandarmoch. La Russia e la persecuzione della memoria

2022

Violence as a Subject of Social Science I The Specificity of Political Violence

2021

In contrast to the world's uniformity all types of violence are observed: urban violence, in poor countries where conflicts are incomprehensible from outside, violence which surface is religious in countries of Muslim tradition, fundamentalist violence, nationalist, racist; violence in the world system which accepts the growing difference between poor and rich. Judiciary violence in executions in States that seem the principal warrantors of social peace. There is violence throughout the globe and under surveillance by the great power. It could be said that the global system tolerates a certain “reserve of violence” and obtains certain profits, as well as the economy tolerates certain extent…

New Error Measures to Evaluate Features on Three-Dimensional Scenes

2011

In this paper new error measures to evaluate image features in three-dimensional scenes are proposed and reviewed. The proposed error measures are designed to take into account feature shapes, and ground truth data can be easily estimated. As other approaches, they are not error-free and a quantitative evaluation is given according to the number of wrong matches and mismatches in order to assess their validity