227 research outputs found

    Riesgo de quiebra mediante análisis discriminante

    Get PDF
    El objetivo principal de este trabajo es construir un modelo de predicción de quiebra específico para empresas pertenecientes al sector de la alimentación mediante el análisis discriminante. La predicción de quiebra también se ha realizado con otros modelos, como son el análisis financiero y el modelo de Altman, con el fin de poder ser comparados, en cuanto a tiempo, costes y grado de fiabilidad. El análisis discriminante trata de identificar si una empresa pertenece a un determinado grupo (activas o quebradas) a partir de una serie de variables con mayor capacidad discriminante, y permite crear funciones clasificadoras para asignar nuevas empresas en uno de los grupos. Para la construcción del modelo, se ha utilizado como herramienta el programa IBM SPSS statistics, que permite identificar esas variables con capacidad discriminante y estimar las funciones de clasificaciónUniversidad de Sevilla. Grado en Finanzas y Contabilida

    Characterizing Optical Loss in Orientation Patterned III-V Materials Using Laser Calorimetry

    Get PDF
    This research examines the optical loss in orientation patterned III-V materials. Laser calorimetry technique was assembled to measure the absorption loss in GaAs, GaP and Fe2+ZnSe samples. Three different methods are explained and utilized to calculate the absorptance value from the calorimetry data. Absorption coefficient values were found for three different samples of GaAs ranging from 0.025+-0.009 cm-1 to 0.80+-0.08 cm-1, all within the sphere of published values for GaAs. A Complete Angle Scatter Instrument (CASI) was used to determine scatter at incident angles ranging from 0 to 55.5 degrees from two OPGaAs samples using an 8.16 micrometer, p-polarized incident laser light. Diffraction peaks were observed in the samples with high impurities, with domains in the material acting as diffraction gratings. FTIR measurements were conducted using a wire grid polarizer on the CASI samples to investigate transmission signal variations with change in incident polarization. Both patterned GaAs samples exhibited some polarization effect from the grated material. The amount of transmission detected changed by as much as 20% for both samples as they were rotated to change incident polarization

    AODVSEC: A Novel Approach to Secure Ad Hoc on-Demand Distance Vector (AODV) Routing Protocol from Insider Attacks in MANETs

    Full text link
    Mobile Ad hoc Network (MANET) is a collection of mobile nodes that can communicate with each other using multihop wireless links without requiring any fixed based-station infrastructure and centralized management. Each node in the network acts as both a host and a router. In such scenario, designing of an efficient, reliable and secure routing protocol has been a major challenging issue over the last many years. Numerous schemes have been proposed for secure routing protocols and most of the research work has so far focused on providing security for routing using cryptography. In this paper, we propose a novel approach to secure Ad hoc On-demand Distance Vector (AODV) routing protocol from the insider attacks launched through active forging of its Route Reply (RREP) control message. AODV routing protocol does not have any security provision that makes it less reliable in publicly open ad hoc network. To deal with the concerned security attacks, we have proposed AODV Security Extension (AODVSEC) which enhances the scope of AODV for the security provision. We have compared AODVSEC with AODV and Secure AODV (SAODV) in normal situation as well as in presence of the three concerned attacks viz. Resource Consumption (RC) attack, Route Disturb (RD) attack, Route Invasion (RI) attack and Blackhole (BH) attack. To evaluate the performances, we have considered Packet Delivery Fraction (PDF), Average End-to-End Delay (AED), Average Throughput (AT), Normalized Routing Load (NRL) and Average Jitter and Accumulated Average Processing Time.Comment: 20 Pages, 24 Figure

    Stabilization of subgrade micaceous soil using bentonite and lime

    Get PDF
    by Bhumika SadhwaniM.Tech

    We should look to the Golden State for electoral innovations to increase political representation

    Get PDF
    Since 2010, the California State Assembly has seen white representation fall and an increase in the number of African American, Asian American and Latino legislators. Sara Sadhwani writes that much of this change may be down to the Golden State's adoption of the top-two primary system in 2012, which allows candidates to compete in an open primary with the top two vote winners advancing to the general election, regardless of their party

    A Study on the Association of Entrepreneurship Ecosystem with Financial Inclusion

    Get PDF
    Purpose: The purpose of this study is to examine the association of entrepreneurship ecosystem with financial inclusion, and to explore the potential ways in which the ecosystem can be leveraged to improve access to financial services for marginalized communities.   Theoretical framework: The study utilizes the ecosystem approach to entrepreneurship, which emphasizes the interdependence and interplay of various stakeholders in the entrepreneurial process. The study also draws on the concept of financial inclusion, which refers to the provision of affordable and accessible financial services to all individuals and businesses.   Design/methodology/approach: The study employs a mixed-methods approach, including a literature review, case studies, and surveys, to collect data from a variety of stakeholders in the entrepreneurship ecosystem.   Findings: The findings suggest that the entrepreneurship ecosystem plays a critical role in promoting financial inclusion. The ecosystem can be leveraged to increase access to financial services for marginalized communities through the development of innovative financial products and services, the creation of mentorship and networking opportunities, and the promotion of policies that encourage financial inclusion.   Research, practical and social implications: The study contributes to the understanding of the relationship between entrepreneurship and financial inclusion, and has implications for policymakers and practitioners seeking to promote financial inclusion through entrepreneurship. The findings can also inform the design and implementation of programs and policies aimed at promoting entrepreneurship and financial inclusion in marginalized communities.   Originality/value: The study is among the first to examine the association of entrepreneurship ecosystem with financial inclusion and to explore the potential ways in which the ecosystem can be leveraged to improve access to financial services for marginalized communities

    FCC Five Year Deorbit Compliance Tools for Standard Low Earth Orbiting SmallSats Employing Passive Re-Entry Techniques

    Get PDF
    On September 29, 2022, the Federal Communications Committee (FCC) adopted a regulation to address the growing issue of orbital debris, requiring spacecraft in orbits of 2,000 km or less to deorbit as soon as possible, but within no more than five years after the end of the mission. These regulations will be enforced starting in 2024 and will apply to network providers both licensed in the United States and foreign-licensed seeking U.S. market access. Given the updated legislation, various communications providers may find that their traditional system architectures are not compliant with the five-year rule. In this work, the authors assess the outputs of Orbital Debris Assessment Reports (ODARs) operators have submitted to the FCC and then utilize NASA’s Debris Assessment Software (DAS) and Ansys’s Systems Toolkit (STK) to determine deorbit lifetime for standard bus sizes. From the data analysis, the relationship between different parameters (such as apogee, area-to-mass ratio, and mission end year) and their respective deorbit time is mapped to create a predictive, accessible reference intended to provide both commercial satellite providers and academic small satellite operators with an efficient method to initially gauge whether the design of their systems will comply with the updated legislations
    corecore