Search results for " Atta"

Relative age at school entry, school performance and long-term labour market outcomes

2015

This article examines the impact of relative age at school entry on school performance, educational attainment and labour market outcomes later in life. We find that the advantages of maturity at school entry are short-lived with relative age having no impact on the years of formal education, adulthood earnings or employment. Our findings are consistent with the view that assumes modest maturity effects in countries where formal education begins late and there are no ability-differentiated learning groups at initial grades. peerReviewed

Educational attainment in the OECD, 1960-2010. Updated series and a comparison with other sources

2015

© 2015 Elsevier Ltd. This paper describes the construction of updated series on the educational attainment of the adult population for a sample of 22 OECD countries covering the period 1960-2010. These series are then compared with (the OECD subsample of) the latest available version of other cross-country data sets on average years of schooling that are commonly used in the literature. Finally, statistical measures of the information content of the different series are constructed using the procedure developed by Krueger and Lindhal (K&L, 2001) and de la Fuente and Doménech (D&D, 2006). The exercise shows that there are important differences in quality across data sets and suggests that su…

From Educational Aspirations to Educational Attainment: The School Careers of the Children Of Immigrants in France and the United States

2008

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Applying Spring Security Framework with KeyCloak-Based OAuth2 to Protect Microservice Architecture APIs: A Case Study

2022

In this study, we implemented an integrated security solution with Spring Security and Keycloak open-access platform (SSK) to secure data collection and exchange over microservice architecture application programming interfaces (APIs). The adopted solution implemented the following security features: open authorization, multi-factor authentication, identity brokering, and user management to safeguard microservice APIs. Then, we extended the security solution with a virtual private network (VPN), Blowfish and crypt (Bcrypt) hash, encryption method, API key, network firewall, and secure socket layer (SSL) to build up a digital infrastructure. To accomplish and describe the adopted SSK solutio…

Gendered “family care work” and employment during the COVID-19 pandemic through the lens of educational attainment

2022

Different Wings Flowfields Interaction on the Wing-Propeller Coupling

1997

A high-portability numerical technique based on the method of free wake analysis (FWA) is described that analyzes the interference between an aircraft propeller and a wing having different planforms and computes the influence of the wing aerodynamic field on the propeller performance. For an isolated propeller and wing, the models employed are based on the FWA and Prandtl theory, respectively. The performance of the propeller in the presence of the wing is related to the wing angle of attack and to the variation of wing circulation and the corresponding induced velocity at the propeller disk. A numerical model, previously and successfully used, was implemented to account for the effects of …

Guanxi, performance and innovation in entrepreneurial service projects

2013

PurposeThis paper aims to analyze the role played by two dimensions of entrepreneurs' private social capital in the survival, growth and innovativeness of entrepreneurial service ventures: local size and preferential attachment degree.Design/methodology/approachData were collected by a questionnaire, the unit of investigation being the private entrepreneur in the service sector in the city of Shanghai. The questionnaire allows the authors to identify the social network of the entrepreneurs, estimate the empirical degree distribution for the entire sample, and estimate local size and preferential attachment degree.FindingsThere is empirical evidence that entrepreneurs do not create social ne…

Countering Adversarial Inference Evasion Attacks Towards ML-Based Smart Lock in Cyber-Physical System Context

2021

Machine Learning (ML) has been taking significant evolutionary steps and provided sophisticated means in developing novel and smart, up-to-date applications. However, the development has also brought new types of hazards into the daylight that can have even destructive consequences required to be addressed. Evasion attacks are among the most utilized attacks that can be generated in adversarial settings during the system operation. In assumption, ML environment is benign, but in reality, perpetrators may exploit vulnerabilities to conduct these gradient-free or gradient-based malicious adversarial inference attacks towards cyber-physical systems (CPS), such as smart buildings. Evasion attac…

Eliciting Information on the Vulnerability Black Market from Interviews

2010

Threats to computing prompted by software vulnerabilities are abundant and costly for those affected. Adding to this problem is the emerging vulnerability black markets (VBMs), since they become places to trade malware and exploits. VBMs are discussed based on information derived from interviews with security researchers. The effort is enriched by further examination of documents surrounding the disclosure of four selected vulnerabilities cases. The result suggests that the VBMs is bifurcated into two distinct parts; the skilled-hacker and the script-kiddie VBMs with a possible link between them, where the latter become places to sell malware or exploit kits after the zero day vulnerability…

A low-cost embedded IDS to monitor and prevent Man-in-the-Middle attacks on wired LAN environments

2007

A man-in-the-middle (MitM) attack is, in the scope of a LAN, a technique where an attacker is able to redirect all traffic between two hosts of that same LAN for packet sniffing or data manipulation, without the end hosts being aware of it. Usually these attacks exploit security flaws in the implementation of the ARP protocol at hosts. Up to now, detecting such attacks required setting up a machine with special-purpose software for this task. As an additional problem, few intrusion detection systems (IDS) are able to prevent MitM attacks. In this work we present a low-cost embedded IDS which, when plugged into a switch or hub, is able to detect and/or prevent MitM attacks automatically and …