In the contents delivery service, the user’s utility depends on the waiting time to get the contents. According to the former studies, the utility decreases nonlinearly in accordance with the increase of the waiting time. In the contents delivery network, various kinds of contents are delivered, and they have various attributes. The decreasing rate of the utility against the increase of the wai...

We study an optimal dividend problem for insurer who simultaneously controls investment weights in a financial market, liability ratio the insurance business, and payout rate. The seeks strategy to maximize her expected utility of payments over infinite horizon. By applying perturbation approach, we obtain value function closed form log power utility. conduct economic analysis investigate impac...

In this paper, we deal with the problem of maintenance planning and production planning for a multiple-product manufacturing system. The manufacturing system under consideration consists of one machine which is subject to random failures and produces several products in order to satisfy some random demands. At any given time, the machine can only produce one type of product. The purpose of this...

Today’s industrial product lines in the automotive and construction equipment domain face the challenge to show functional safety standard compliance and argue for the absence of failures for all derived product variants. The product line approaches are not sufficient to support practitioners to trace safety-related characteristics through development. We aim to provide aid in creating a safety...

Design diversity has long been used to protect redundant systems against common-mode failures. The conventional notion of diversity relies on “independent” generation of “different” implementations. This concept is qualitative and does not provide a basis to compare the reliabilities of two diverse systems. In this paper, for the first time, we present a metric to quantify diversity among sever...

We present a novel proactive routing algorithm that continuously searches for failures via frequent ICMP echo requests. Our approach differs from its predecessors in that it is proactive instead of reactive. That is, we continuously search for failures before they affect message transmissions. When a failure is detected, an alternative route is identified and used. The Dynamic Routing System (D...

In this paper we report recent results on modelling the impact of cyber-attacks on the resilience of complex industrial systems. We use a hybrid model of the system under study in which the accidental failures and the malicious behaviour of the Adversary are modelled stochastically, while the consequences of failures and attacks are modelled in detail using deterministic models. This modelling ...

Many important variables in behavioral development are presumed to be unrelated because of repeated failures to obtain substantial correlations. In this article, we explore the possibility that such null findings have often been due to failures to aggregate. The principle of aggregation states that the sum of a set of multiple measurements is a more stable and representative estimator than any ...

The paper describes a new evaluation measure for speech recognition in spoken language dialogue systems. The measure is based on the usefulness of the recognition for the system, and the usefulness is measured at the level of meaning representation. It is argued that the new measure is more useful than word error rate, and is more accurate than simpler functional measures.

Based on Information Technology adoption theories and considering Chinese cultural characteristics, this chapter proposes a user centric IT/IS evaluation model composed of three determinants, namely perceived usefulness, perceived ease of use, and perceived fit, for investigating the e-government systems application and management in China. By empirically validating the model with survey data, ...