Search results for "information systems"
showing 10 items of 1926 documents
Los sistemas de información y la auditoría informática aplicados a una institución fiscalizadora subestatal: la Sindicatura de Comptes de la Comunida…
2020
La digitalización es un fenómeno global que afecta a todas las actividades humanas. Las administraciones públicas también han incorporado a sus estructuras las nuevas tecnologías de la información y la comunicación, de manera que el sector público se ha informatizado completamente. En este contexto digital, la auditoría informática es una herramienta que permite fiscalizar las administraciones públicas y, a la vez, mejora la rendición de cuentas. Este artículo examina las principales ventajas y riesgos de la digitalización y ofrece un estudio de caso centrado en una institución fiscalizadora pública española que ha implementado la auditoría informática para auditar todas las operaciones de …
Using continuous user authentication to detect masqueraders
2003
Nowadays computer and network intrusions have become more common and more complicated, challenging the intrusion detection systems. Also, network traffic has been constantly increasing. As a consequence, the amount of data to be processed by an intrusion detection system has been growing, making it difficult to efficiently detect intrusions online. Proposes an approach for continuous user authentication based on the user’s behaviour, aiming at development of an efficient and portable anomaly intrusion detection system. A prototype of a host‐based intrusion detection system was built. It detects masqueraders by comparing the current user behaviour with his/her stored behavioural model. The m…
Probabilities of conditionals and previsions of iterated conditionals
2019
Abstract We analyze selected iterated conditionals in the framework of conditional random quantities. We point out that it is instructive to examine Lewis's triviality result, which shows the conditions a conditional must satisfy for its probability to be the conditional probability. In our approach, however, we avoid triviality because the import-export principle is invalid. We then analyze an example of reasoning under partial knowledge where, given a conditional if A then C as information, the probability of A should intuitively increase. We explain this intuition by making some implicit background information explicit. We consider several (generalized) iterated conditionals, which allow…
Forecasting basketball players' performance using sparse functional data*
2019
Statistics and analytic methods are becoming increasingly important in basketball. In particular, predicting players’ performance using past observations is a considerable challenge. The purpose of this study is to forecast the future behavior of basketball players. The available data are sparse functional data, which are very common in sports. So far, however, no forecasting method designed for sparse functional data has been used in sports. A methodology based on two methods to handle sparse and irregular data, together with the analogous method and functional archetypoid analysis is proposed. Results in comparison with traditional methods show that our approach is competitive and additio…
VentQsys: Low-cost open IoT system for CO2 monitoring in classrooms
2021
AbstractIn educational context, a source of nuisance for students is carbon dioxide ($$CO_2$$ C O 2 ) concentration due to closed rooms and lack of ventilation or circulatory air. Also, in the pandemic context, ventilation in indoor environments has been proven as a good tool to control the COVID-19 infections. In this work, it is presented a low cost IoT-based open-hardware and open-software monitoring system to control ventilation, by measuring carbon dioxide ($$CO_2$$ C O 2 ), temperature and relative humidity. This system provides also support for automatic updating, auto-self calibration and adds some Cloud and Edge offloading of computational features for mapping functionalities. From…
MODELLING USER UNCERTAINTY FOR DISCLOSURE RISK AND DATA UTILITY
2002
In this paper we show how a simple model that captures user uncertainty can be used to define suitable measures of disclosure risk and data utility. The model generalizes previous results of Duncan and Lambert.1 We present several examples to illustrate how the new measures can be used to implement existing optimality criteria for the choice of the best form of data release.
Five Challenges for Benefits Management in Complex Digitalisation Efforts – and a Research Agenda to Address Current Shortcomings
2019
Over the past decades a number of benefits realisation (BR) frameworks have been developed. The benefits management model (BMM) is considered to be the most widely adopted and is often seen as a reference for good practice in digitalisation efforts in single organisations. However, this literature provides little support for complex, inter‑organisational efforts. This is problematic, considering that digitalisation increasingly involves multiple organisations. To explore this gap, we studied the phenomenon in a Norwegian inter‑organisational eHealth effort. Based on a qualitative study involving 50 interviews, observations and document analyses, we identify five distinct challenges and sugg…
Intellectual capital reporting: A knowledge tool to coordinate a group of regional non-profit organisations
2017
Whilst many organizations worldwide have stopped disclosing Intellectual Capital (IC), to the best of our knowledge, the only longstanding NPO still measuring, managing and reporting its IC is a large Italian non-profit organization (NPO), ANPAS Piemonte. The main aim of the article is thus to investigate the reasons why ANPAS Piemonte continues to deal with IC, to examine the determinants of this choice, the costs and the benefits management gets from IC measurement, management and reporting. In other words, the paper aims to explore the intellectual capital (IC) reporting process from an internal, managerial point of view. The paper employ a case study methodology to address its aim, and …
On Modern Matrix Iteration Processes of Bernoulli and Graeffe Type
1958
Verso una dimensione narrativa delle mappe
2021
Tra il pensiero e la costruzione dell’architettura il disegno ha un ruolo baricentrico per connettere i diversi protagonisti di una realizzazione e per coinvolgere la collettività facendo percepire inedite prospettive. La scrittura si rivela utile per esplicitare ciò che nella grafica è sotteso e per stabilire un ordine nuovo nel ragionamento progettuale. I rapporti fra segni e significati si moltiplicano nei sistemi informativi recenti in cui si ha la sensazione di poter dire moltissimo (dati numerici e spaziali) ma a volte sfugge quella sintesi indispensabile per una interpretazione concreta, finalizzata alla costruzione di possibili esperienze fisiche. Per l’esplorazione dell’uso di dive…