Acercamiento bibliométrico a las revistas científicas colombianas de ciencias sociales : comparación y nuevas miradas hacia la evaluación y categorización a partir de ISI WoS y Scielo Citation Index

En la presente investigación se obtienen indicadores bibliométricos de producción y citación de las revistas científicas colombianas de ciencias sociales indexadas en la versión 2014 del Journal Citation Report (JCR) de ISI Web of Science (WoS) Para ello es seleccionó la información publicada en el periodo 2009-2014 tanto en la base de datos ISI Web of Science (WoS) como Scielo Citation Index (SCI), lo que posibilitó la obtención de los indicadores y conclusiones. El objetivo general es la obtención de indicadores en las dos fuentes de datos para observar los diferentes comportamientos y la posibilidad de contar con mayor cantidad de insumos para la evaluación de revistas y de la investigación en general. Los resultados muestran bajos niveles de citación en ambas fuentes, sin embargo existe una mayor cantidad de citas (Ncit), así como un mayor porcentaje de citas por documento (Ncit/Ndoc) en SCI lo que se debe a la presencia de mayor cantidad de revistas de la región y por ende a citar contenidos mayormente locales, aspecto que WoS no tiene debido a la alta presencia anglosajona en las revistas que conforman la base. La posibilidad y beneficios de incluir datos de SCI para la evaluación de revistas científicas e incluso en la evaluación de autores como fuente válida que aporte calidad a la investigación es otro de los aciertos de la investigación.

Acercamiento bibliométrico a las revistas científicas colombianas de ciencias sociales : comparación y nuevas miradas hacia la evaluación y categorización a partir de ISI WoS y Scielo Citation Index

En la presente investigación se obtienen indicadores bibliométricos de producción y citación de las revistas científicas colombianas de ciencias sociales indexadas en la versión 2014 del Journal Citation Report (JCR) de ISI Web of Science (WoS) Para ello es seleccionó la información publicada en el periodo 2009-2014 tanto en la base de datos ISI Web of Science (WoS) como Scielo Citation Index (SCI), lo que posibilitó la obtención de los indicadores y conclusiones. El objetivo general es la obtención de indicadores en las dos fuentes de datos para observar los diferentes comportamientos y la posibilidad de contar con mayor cantidad de insumos para la evaluación de revistas y de la investigación en general. Los resultados muestran bajos niveles de citación en ambas fuentes, sin embargo existe una mayor cantidad de citas (Ncit), así como un mayor porcentaje de citas por documento (Ncit/Ndoc) en SCI lo que se debe a la presencia de mayor cantidad de revistas de la región y por ende a citar contenidos mayormente locales, aspecto que WoS no tiene debido a la alta presencia anglosajona en las revistas que conforman la base. La posibilidad y beneficios de incluir datos de SCI para la evaluación de revistas científicas e incluso en la evaluación de autores como fuente válida que aporte calidad a la investigación es otro de los aciertos de la investigación.

Acercamiento bibliométrico a las revistas científicas colombianas de ciencias sociales : comparación y nuevas miradas hacia la evaluación y categorización a partir de ISI WoS y Scielo Citation Index

En la presente investigación se obtienen indicadores bibliométricos de producción y citación de las revistas científicas colombianas de ciencias sociales indexadas en la versión 2014 del Journal Citation Report (JCR) de ISI Web of Science (WoS) Para ello es seleccionó la información publicada en el periodo 2009-2014 tanto en la base de datos ISI Web of Science (WoS) como Scielo Citation Index (SCI), lo que posibilitó la obtención de los indicadores y conclusiones. El objetivo general es la obtención de indicadores en las dos fuentes de datos para observar los diferentes comportamientos y la posibilidad de contar con mayor cantidad de insumos para la evaluación de revistas y de la investigación en general. Los resultados muestran bajos niveles de citación en ambas fuentes, sin embargo existe una mayor cantidad de citas (Ncit), así como un mayor porcentaje de citas por documento (Ncit/Ndoc) en SCI lo que se debe a la presencia de mayor cantidad de revistas de la región y por ende a citar contenidos mayormente locales, aspecto que WoS no tiene debido a la alta presencia anglosajona en las revistas que conforman la base. La posibilidad y beneficios de incluir datos de SCI para la evaluación de revistas científicas e incluso en la evaluación de autores como fuente válida que aporte calidad a la investigación es otro de los aciertos de la investigación.

Entrevista a Eugene Garfield, director del Institute for Scientific Information (ISI) de Estados Unidos

El químico norteamericano Eugene Garfield es considerado por muchos investigadores como el "santón" de la documentación científica en el mundo. Bajo el prisma de Garfield y a través de publicaciones tan prestigiosas como "Current Contents" o "Science Citation Index", cualquier investigador puede conocer el índice de impacto que ha alcanzado su trabajo en la comunidad científica.

Calidad metodológica de ensayos clínicos sobre periodoncia publicados en revistas ISI

Objetivo: Describir la calidad metodológica de los ensayos clínicos de periodoncia en revistas indexadas en el Institute for Scientific Information. Material y métodos: Estudio observacional descriptivo en el que se evaluaron los ensayos clínicos publicados entre Enero de 2008 y Diciembre de 2012, de las cuatro revistas de periodoncia indexadas a ISI, con mayor factor de impacto en los últimos 5 años según Journal Citation Reports. Se realizó una estrategia de búsqueda en PubMed para cada revista. Sólo los ensayos clínicos fueron seleccionados para el análisis cualitativo por medio de una escala de calidad metodológica. Los datos fueron analizados utilizando el paquete estadístico SPSS Statistics 20 para Windows (IBM., Chicago, USA.) y presentados mediante estadística descriptiva. Resultados: De las revistas que cumplieron los criterios de selección, Journal of Clinical Periodontology, Journal of Periodontology, Journal of Periodontal Research e International Journal of Periodontics & Restorative Dentistry, se analizaron 387 ensayos clínicos. De los 24 puntos máximos obtenibles de la escala, la media alcanzada por los manuscritos evaluados fue de 17,45 puntos. Conclusión: La calidad metódológica de los ensayos clínicos en periodoncia, indexados en revistas ISI, fue deficiente.

A broadcast authentication and integrity augmentation for trusted differential GPS in marine navigation

In this paper we propose an efficient authentication and integrity scheme to support DGPS corrections using the RTCM protocol, such that the identified vulnerabilities in DGPS are mitigated. The proposed scheme is based on the TESLA broadcast protocol with modifications that make it suitable for the bandwidth and processor constrained environment of marine DGPS.

Institutional problems of the emerging scientific community in Iran

This article attempts to explore the concept of scientific community at the macro-national level in the context of Iran. Institutionalisation of science and its professional growth has been constrained by several factors. The article first conceptualises the notion of science community as found in the literature in the context of Iran, and attempts to map through some indicators. The main focus, however, lies in mapping some institutional problems through empirical research. This was undertaken in 2002–04 in order to analyse the structure of the scientific community in Iran in the ‘exact sciences’ (mathematics, physics, chemistry, biology and earth sciences). The empirical work was done in two complementary perspectives: through a questionnaire and statistical analysis of it, and through semistructured interviews with the researchers. There are number of problems confronting scientists in Iran. Facilities provided by institutions is one of the major problems of research. Another is the tenuous cooperation among scientists. This is reported by most of the researchers, who deplore the lack of cooperation among their group. Relationships are mostly with the Ph.D. students and only marginally with colleagues. Our research shows that the more brilliant the scientists, the more frustrated they are from scientific institutions in Iran. Medium-range researchers seem to be much happier about the scientific institution to which they belong than the brighter scholars. The scientific institutions in Iran seem to be built for the needs of the former rather than the latter. These institutions seem not to play a positive role in the case of the best scientists. On the whole, many ingredients of the scientific community, at least at its inception, are present among Iranian scientists: the strong desire for scientific achievement in spite of personal, institutional and economic problems.

Multi-factor password-authenticated key exchange

We consider a new form of authenticated key exchange which we call multi-factor password-authenticated key exchange, where session establishment depends on successful authentication of multiple short secrets that are complementary in nature, such as a long-term password and a one-time response, allowing the client and server to be mutually assured of each other's identity without directly disclosing private information to the other party. Multi-factor authentication can provide an enhanced level of assurance in higher-security scenarios such as online banking, virtual private network access, and physical access because a multi-factor protocol is designed to remain secure even if all but one of the factors has been compromised. We introduce a security model for multi-factor password-authenticated key exchange protocols, propose an efficient and secure protocol called MFPAK, and provide a security argument to show that our protocol is secure in this model. Our security model is an extension of the Bellare-Pointcheval-Rogaway security model for password-authenticated key exchange and accommodates an arbitrary number of symmetric and asymmetric authentication factors.

An administrative model for UCON

UCON is an emerging access control framework that lacks an administration model. In this paper we define the problem of administration and propose a novel administrative model. At the core of this model is the concept of attribute, which is also the central component of UCON. In our model, attributes are created by the assertions of subjects, which ascribe properties/rights to other subjects or objects. Through such a treatment of attributes, administration capabilities can be delegated from one subject to another and as a consequence UCON is improved in three aspects. First, immutable attributes that are currently considered as external to the model can be incorporated and thereby treated as mutable at- tributes. Second, the current arbitrary categorisation of users (as modifiers of attributes), to system and administrator can be removed. Attributes and objects are only modifiable by those who possess administration capability over them. Third, the delegation of administration over objects and properties that is not currently expressible in UCON is made possible.

Adiabatic compression testing - part II : background and approach to estimating severity of test methodology

Adiabatic compression testing of components in gaseous oxygen is a test method that is utilized worldwide and is commonly required to qualify a component for ignition tolerance under its intended service. This testing is required by many industry standards organizations and government agencies; however, a thorough evaluation of the test parameters and test system influences on the thermal energy produced during the test has not yet been performed. This paper presents a background for adiabatic compression testing and discusses an approach to estimating potential differences in the thermal profiles produced by different test laboratories. A “Thermal Profile Test Fixture” (TPTF) is described that is capable of measuring and characterizing the thermal energy for a typical pressure shock by any test system. The test systems at Wendell Hull & Associates, Inc. (WHA) in the USA and at the BAM Federal Institute for Materials Research and Testing in Germany are compared in this manner and some of the data obtained is presented. The paper also introduces a new way of comparing the test method to idealized processes to perform system-by-system comparisons. Thus, the paper introduces an “Idealized Severity Index” (ISI) of the thermal energy to characterize a rapid pressure surge. From the TPTF data a “Test Severity Index” (TSI) can also be calculated so that the thermal energies developed by different test systems can be compared to each other and to the ISI for the equivalent isentropic process. Finally, a “Service Severity Index” (SSI) is introduced to characterizing the thermal energy of actual service conditions. This paper is the second in a series of publications planned on the subject of adiabatic compression testing.

Are SC-FDE systems robust to CFO?

This paper investigates the impact of carrier frequency offset (CFO) on Single Carrier wireless communication systems with Frequency Domain Equalization (SC-FDE). We show that CFO in SC-FDE systems causes irrecoverable channel estimation error, which leads to inter-symbol-interference (ISI). The impact of CFO on SC-FDE and OFDM is compared in the presence of CFO and channel estimation errors. Closed form expressions of signal to interference and noise ratio (SINR) are derived for both systems, and verified by simulation results. We find that when channel estimation errors are considered, SC-FDE is similarly or even more sensitive to CFO, compared to OFDM. In particular, in SC-FDE systems, CFO mainly deteriorates the system performance via degrading the channel estimation. Both analytical and simulation results highlight the importance of accurate CFO estimation in SC-FDE systems.

Cluster-based Intrusion Detection (CBID) architecture for mobile ad hoc networks

The ad hoc networks are vulnerable to attacks due to distributed nature and lack of infrastructure. Intrusion detection systems (IDS) provide audit and monitoring capabilities that offer the local security to a node and help to perceive the specific trust level of other nodes. The clustering protocols can be taken as an additional advantage in these processing constrained networks to collaboratively detect intrusions with less power usage and minimal overhead. Existing clustering protocols are not suitable for intrusion detection purposes, because they are linked with the routes. The route establishment and route renewal affects the clusters and as a consequence, the processing and traffic overhead increases due to instability of clusters. The ad hoc networks are battery and power constraint, and therefore a trusted monitoring node should be available to detect and respond against intrusions in time. This can be achieved only if the clusters are stable for a long period of time. If the clusters are regularly changed due to routes, the intrusion detection will not prove to be effective. Therefore, a generalized clustering algorithm has been proposed that can run on top of any routing protocol and can monitor the intrusions constantly irrespective of the routes. The proposed simplified clustering scheme has been used to detect intrusions, resulting in high detection rates and low processing and memory overhead irrespective of the routes, connections, traffic types and mobility of nodes in the network. Clustering is also useful to detect intrusions collaboratively since an individual node can neither detect the malicious node alone nor it can take action against that node on its own.

A discussion of the research performance evaluation in building and construction management discipline : the journal impact factors and SCI-index journals

The trend of diminished funding, demands for greater efficiency and higher public accountability have led to a rapid expansion of interest in the bibliometric assessment of research performance of universities. A pilot research is conducted to provide a preliminary overview of the research performance of the building and construction schools or departments through the analysis of bibliometric indicators including the journal impact factor (JIF) published by Institute for Scientific Information (ISI). The suitability of bibliometric evaluation approaches as a measure of research quality in building and construction management research field is discussed.