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As AI systems become integral to critical operations across industries and services, ensuring their reliability and safety is essential. We offer a framework that integrates established reliability and resilience engineering principles into AI systems. By applying traditional metrics such as failure rate and Mean Time Between Failures (MTBF) along with resilience engineering and human reliability analysis, we propose an integrate framework to manage AI system performance, and prevent or efficiently recover from failures. Our work adapts classical engineering methods to AI systems and outlines a research agenda for future technical studies. We apply our framework to a real-world AI system, using system status data from platforms such as openAI, to demonstrate its practical applicability. This framework aligns with emerging global standards and regulatory frameworks, providing a methodology to enhance the trustworthiness of AI systems. Our aim is to guide policy, regulation, and the development of reliable, safe, and adaptable AI technologies capable of consistent performance in real-world environments.

One of the most appreciated features of Fault Trees (FTs) is their simplicity, making them fit into industrial processes. As such processes evolve in time, considering new aspects of large modern systems, modelling techniques based on FTs have adapted to these needs. This paper proposes an extension of FTs to take into account the problem of Predictive Maintenance, one of the challenges of the modern dependability field of study. The paper sketches the Predictive Fault Tree language and proposes some use cases to support their modelling and analysis in concrete industrial settings.

<p> This letter reports a compact SPICE model for the electron transport characteristics of Al2O3/HfO2-based nanolaminates for their use in multilevel one-time programmable (M-OTP) memories. The model comprises three simulation blocks corresponding to the electrical stimulus applied to the device, the equivalent circuit of the memory cell, and the events generator associated with the dielectric breakdown of the insulating layer. For a clear assessment of the quantum effects occurring in these structures, constant voltage stress was used as the primary electrical stimulus. The antifuse (AF) cell is represented by a combination of series and parallel resistances that account for the formation of filamentary conducting paths with quantum properties across the structure. The arrival of successive breakdown events is simulated using a power-law nonhomogeneous Poisson process. </p>

This letter reports a compact SPICE model for the electron transport characteristics of Al2O3/HfO2-based nanolaminates for their use in multilevel one-time programmable (M-OTP) memories. The model comprises three simulation blocks corresponding to the electrical stimulus applied to the device, the equivalent circuit of the memory cell, and the events generator associated with the dielectric breakdown of the insulating layer. For a clear assessment of the quantum effects occurring in these structures, constant voltage stress was used as the primary electrical stimulus. The antifuse (AF) cell is represented by a combination of series and parallel resistances that account for the formation of filamentary conducting paths with quantum properties across the structure. The arrival of successive breakdown events is simulated using a power-law nonhomogeneous Poisson process.

This study aims to examine the effect of: (1) product quality on customer satisfaction, (2) service quality on customer satisfaction, (3) price on customer satisfaction. The research design used in this study is a causal quantitative research. In this study, the research subjects were customers at CV Elzayn Communication and the objects of research were service quality, price and customer satisfaction. The sample in this study amounted to 105 customers. Data were collected by interviews, document recording and questionnaire methods, then analyzed by multiple regression analysis. The results showed that: (1) product quality had a significant effect on customer satisfaction, (2) service quality had a significant effect on customer satisfaction, (3) price had a significant effect on customer satisfaction.

A major issue for many applications of blockchain technology is the tension between immutability and compliance to regulations. For instance, the GDPR in the EU requires to guarantee, under some circumstances, the right to be forgotten. This could imply that at some point one might be forced to delete some data from a locally stored blockchain, therefore irreparably hurting the security and transparency of such decentralized platforms. Motivated by such data protection and consistency issues, in this work we design and implement a mechanism for securely deleting data from Bitcoin blockchain. We use zero-knowledge proofs to allow any node to delete some data from Bitcoin transactions, still preserving the public verifiability of the correctness of the spent and spendable coins. Moreover, we specifically use STARK proofs to exploit the transparency that they provide. Our solution, unlike previous approaches, avoids the complications of asking nodes to reach consensus on the content to delete. In particular, our design allows every node to delete some specific data without coordinating this decision with others. In our implementation, data removal can be performed (resp., verified) in minutes (resp., seconds) on a standard laptop rather than in days as required in previous designs based on consensus.

We use coupling methods to compare reliability and other related variables of complex systems made with interacting components, reparaible or not.As an application, we obtain an upper bound for the mean time to failure.

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A device (for example, an electronic card) is likely to fail a certain number of times during its mission time (time elapsed from start up to shut down). The failure time is defined as the time elapsed from start up to an observed reparaible failure. There are two categories of failures; casual failures, when the time to failure is exponentially distributed and wear - out failures, when the time to failure follows a normal or close to a normal distribution. In any given time interval, during its mission time, a failure can belong to either category. To define its nature, laboratory tests are required. The present work proposes a novel method by which to define the two probability distributions on the basis of data gathered from laboratory tests, performed during a predetermined time rest. Additional laboratory tests are not required after the time test. The method holds the potential to be very useful, because determining distribution time  by means of laboratory tests, sufficient to gather a significant sample, could require, paradoxically, a test time equal to that of the device mission time.

This paper considers the problem of changing the value of selected characteristics for the operation of a two-level inventory system of maintainable parts depending on the flow of regenerated components in the inventory system. We analyzed the influence of the flow of regenerated components on the value of the coefficient of peripheral storage fill-rate, total costs and the average waiting time in the queue in peripheral warehouses, at different nominal values of the stocks in central and peripheral warehouses. The demand for spare parts in the peripheral warehouses is dependent on seasonal changes, modeled with an appropriate probability distribution.

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Contents of the papers presented at the international workshop deal with the wide variety of new and computer-based techniques for production planning and control that has become available to the scientific and industrial world in the past few years: formal modeling techniques, artificial neural networks, autonomous agent theory, genetic algorithms, chaos theory, fuzzy logic, simulated annealing, tabu search, simulation and so on. The approach, while being scientifically rigorous, is focused on the applicability to industrial environment.

Zellen lst.Diese Extraktion von Membranbestandteilen fhrt zur Abttung der Zellen.Um den Mechanismus des Hochdrucks auf die Hopfenresistenzinaktivierung aufzuklren, wurde das System Membranenzym HorA Membran

Research of stress-strain state allowed to offer new constustion rockfill concrete face dam with soilcement supporting zone, which has the reliabity and reparaibility.

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The aim of the paper is to investigate a reverse logistics model. Schrady (1967) has examined a model with two stores, where the returned items are repaired then used as new one. The not repairable items are disposed of and the required products are procured. The author has analyzed the model with one procurement batch and two or more repair batches. We generalize this model and it is allowed more than one procurement batches. We show that the inventory holding strategy offered by Schrady is not always optimal and the policy offered by us gives a better result as that of Schrady.
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\nSchrady (1967) egy javítható temékű reverz logisztikai rendstert vizsgált. A termékek a felhasználótól visszakerülnek a karbantartásra, ahol azokat kijavítják, és mint újat újra felhasználják. A kereslet a termék iránt időben konstans. Nem minden termék kerül vissza a karbantartáshoz, ezért a hiányzó mennyiséget beszerzik, de csak egy tétel segítségével. A cél a rendelési fixköltség és a készlettartási költségek minimalizásása. A dolgozatban az alapmodellt terjesztjük ki arra az esetre, ha több, mint egy beszerzési tételt engedünk meg.

Os modelos mais comuns utilizados para descrever o fluxo de falhas de sistemas reparáveis são os processos de Poisson homogêneo e não-homogêneo, e o processo de renovação. Este trabalho tem como objetivo descrever o método de análise da confiabilidade de sistemas reparáveis complexos, utilizando o modelo misto, que incorpora, simultaneamente, os padrões poissoniano e de renovação na modelagem da função de intensidade completa. A intenção é mostrar a flexibilidade e o poder deste modelo na análise de dados de falhas recorrentes.

Abstract We define linear codes which are s -Locally Recoverable Codes (or s -LRC), i.e. codes which are LRC in s ways, the case $$s=1$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>s</mml:mi><mml:mo>=</mml:mo><mml:mn>1</mml:mn></mml:mrow></mml:math> roughly corresponding to the classical case of LRC codes. We use them to describe codes which correct many erasures, although they have small minimum distance. Any letter of a received word may be corrected using s different local codes. We use the Segre embedding of s local codes and then a linear projection.

An efficient maintenance allows extension of operating life of system, thus contributing to increase system performance. Computer systems like other systems must operate without interruption and applied strategies of maintenance must be efficiency. This paper proposes to define a maintenance strate