New ANSI versions of MIL-STD-414 and MIL-STD-105D

When acceptance sampling plans are applied to measurement characteristics, a choice between application of a variables or an attributes sampling plan must be made. With the recent revision by the American Society for Quality Control for the American National Standards Institute of the ANSI/ASQC Z1.9 variables system and the ANSI/ASQC Z1.4 attributes system, the standards have now been matched so that it is possible to move between them. This article will discuss exploitation of the resulting synergistic relationship to achieve more rational and more effective acceptance sampling.     

Transshipment along a single road

This article explores the problem of the transshipment of goods between centers that are situated along a single road. Costs are incurred both for goods that are shipped and for goods that remain in their original centers. A procedure is developed that determines a partial optimal assignment by use of a northwest corner rule solution. This partial assignment then is completed by solving a number of smaller tridiagonal transportation problems.     

一种微机应用开发的实际方法

在微机应用中缺乏必需的开发工具是经常会遇到的情况,本文介绍了利用一般的微型计算机来研制微机应用程序的方法,讨论了有关的硬件和软件问题。     

Conflict,technology, and the impact of industrialization: The Great War 1914–18

In major respects, World War I appeared markedly unlike even quite recent wars. What, by and large, caused the difference was not quality of command or changing morale. It was industrial mobilisation and technological advancement. The emergence of new weapons, and of new methods of producing them in volume and at speed, played a crucial role in changing the nature of war.

Certainly, the peculiar qualities of the Great War of 1914–18 were not determined solely by technology. Quite other factors, such as the profundity of the issues at stake ('This war is life and death'), and the relative equality in resources and determination between the principal rivals, also profoundly influenced the nature of the conflict. Yet in delineating the dominant aspects of that struggle, the contribution made by industrialization and technology and a culture of inventiveness must loom large.

Admittedly, in some respects, the transformation of weaponry under the impact of industrialisation did not necessarily produce a new kind of war. The battleship of 1914 was hugely unlike the battleship of 1805, yet the Great War at sea was not strikingly different from the naval war against Napoleon. War in the air was an entirely new phenomenon, yet the aircraft had not reached a state of development where it could fundamentally alter the face of battle.

But in the case of the land war, new weapons and new volumes of weaponry did indeed make a vast difference to the nature and consequence of military operations. In large measure they generated the features by which this struggle is best remembered: stalemate, immobility, great battles of attrition, and ‘futility’.     

The United States and Latin America: Shaping an elusive future

This article presents a regional overview of US‐Latin American security relations, focusing on those countries where US national security interests are most likely to be endangered over the next two decades. The author examines the current US strategy of ‘shaping’ the Latin security environment, with a view to assessing the strength and weaknesses of this approach. The article presents some policy recommendations, including the recommendation that the US do more to redress the historical imbalance in Latin American civil‐military relations by strengthening civilian institutions. It also argues that at the regional level a major effort be made to recapture momentum toward the creation of a Free Trade Association of the Americas.     

Dynamic service rate control for a single‐server queue with Markov‐modulated arrivals

We consider the problem of service rate control of a single‐server queueing system with a finite‐state Markov‐modulated Poisson arrival process. We show that the optimal service rate is nondecreasing in the number of customers in the system; higher congestion levels warrant higher service rates. On the contrary, however, we show that the optimal service rate is not necessarily monotone in the current arrival rate. If the modulating process satisfies a stochastic monotonicity property, the monotonicity is recovered. We examine several heuristics and show where heuristics are reasonable substitutes for the optimal control. None of the heuristics perform well in all the regimes and the fluctuation rate of the modulating process plays an important role in deciding the right heuristic. Second, we discuss when the Markov‐modulated Poisson process with service rate control can act as a heuristic itself to approximate the control of a system with a periodic nonhomogeneous Poisson arrival process. Not only is the current model of interest in the control of Internet or mobile networks with bursty traffic, but it is also useful in providing a tractable alternative for the control of service centers with nonstationary arrival rates. © 2013 Wiley Periodicals, Inc. Naval Research Logistics 60: 661–677, 2013