Lucas Gracefulness of Almost and Nearly for Some Graphs

By a graph, we mean a finite undirected graph without loops or multiple edges

Authorship patterns and degree of collaboration of Sri Lankan scientific publications in Social sciences and Humanities – a picture from SCOPUS

The purpose of this study is to identify the authorship patterns and degree of collaboration of Sri Lanka in humanities and social science research with a total of 1795 records of publications authored by 3521 authors during the period 1960 – 2012 (inclusive) derived from SCOPUS database. The research method of this study was Bibliometric analytical method. Findings of the analysis revealed that the majority of the publications are contributed by multiple authors. Degree of collaboration was progressively increased over the study span. Remarkable collaborative contributors are from United States with 15.93

Super Fibonacci Graceful Labeling of Some Special Class of Graphs

A Fibonacci graceful labeling and a super Fibonacci graceful labeling on graphs were introduced by Kathiresan and Amutha in 2006

Automated Accident Detection In Intersections Via Digital Audio Signal Processing

The aim of this thesis is to design a system for automated accident detection in intersections. The input to the system is a three-second audio signal. The system can be operated in two modes: two-class and multi-class. The output of the two-class system is a label of ?crash? or ?non-crash?. In the multi-class system, the output is the label of ?crash? or various non-crash incidents including ?pile drive?, ?brake?, and ?normal-traffic? sounds. The system designed has three main steps in processing the input audio signal. They are: feature extraction, feature optimization and classification. Five different methods of feature extraction are investigated and compared; they are based on the discrete wavelet transform, fast Fourier transform, discrete cosine transform, real cepstrum transform and Mel frequency cepstral transform. Linear discriminant analysis (LDA) is used to optimize the features obtained in the feature extraction stage by linearly combining the features using different weights. Three types of statistical classifiers are investigated and compared: the nearest neighbor, nearest mean, and maximum likelihood methods. Data collected from Jackson, MS and Starkville, MS and the crash signals obtained from Texas Transportation Institute crash test facility are used to train and test the designed system. The results showed that the wavelet based feature extraction method with LDA and maximum likelihood classifier is the optimum design. This wavelet-based system is computationally inexpensive compared to other methods. The system produced classification accuracies of 95% to 100% when the input signal has a signal-to-noise-ratio of at least 0 decibels. These results show that the system is capable of effectively classifying ?crash? or ?non-crash? on a given input audio signal

CONSERVATIVE MANAGEMENT OF HYDROCELE- CASE REPORT

In this case report, we present an event of a 65-year-old gentleman with a diagnosed solitary oval swelling of the size 6×4 cm present in the right side of the scrotum by ultrasonographic images. Hydrocele under tension may be at high risk of acute rupture of testis of reducing the spermatogenesis, and surgical correction may be the best therapeutic opinion in this case. We expectantly managed the patient's massive hydrocele and encountered by hydro celotomy and no complications throughout the course of his recovery.Keywords: Hydrocele, Ultrasonographic Image, Hydrocelectom

Explorando la Prevalencia del Comportamiento de Ciudadanía Organizacional en Profesores y sus Determinantes: Evidencias de un Medio Cultural Poco Investigado

Teachers’ organizational citizenship behaviour (OCB) is the teacher behaviour that is discretionary, not directly or explicitly recognised by the formal reward system. The factors found to be determining Teachers’ OCB are different, hinging on country-culture specific nature. Research studies in the sphere of Teachers’ OCB have heretofore been overlooked in Sri Lanka and other similar Asian countries. Hence, this study aims at exploring the degree of prevalence of teacher OCB and its dominant determinants among the teachers in Sri Lanka. The study draws on in-depth qualitative data from interviews and the participants included a convenience sample of teachers and principals employed in secondary schools. The data were analysed deductively using content analysis method. The findings reveal that the teachers’ propensity to perform OCB - towards students, school and their colleagues - is on the decline. The determinants, such as work-family conflict, perceived organizational support, teacher values, teachers’ self-efficacy, student behaviour patterns, and teachers’ pupil control ideologies, seem to be dominant attributing to the low levels of teachers’ OCB.El comportamiento cívico organizacional de los profesores (CCO) es el comportamiento de los docentes que es discrecional, no reconocido directa o explícitamente por el sistema formal de recompensas. Los factores que determinan el CCO de los profesores son diferentes, y dependen de la naturaleza específica de la cultura del país. Hasta ahora, los estudios de investigación en la esfera del CCO de los docentes se han pasado por alto en Sri Lanka y otros países asiáticos similares. Por consiguiente, el presente estudio tiene por objeto explorar el grado de prevalencia del CCO del profesorado y sus determinantes dominantes entre los profesores de Sri Lanka. El estudio se basa en datos cualitativos detallados procedentes de entrevistas y los participantes incluyeron una muestra de conveniencia de maestros y directores empleados en escuelas secundarias. Los datos se analizaron de manera deductiva utilizando el método de análisis del contenido. Las conclusiones revelan que la propensión de los profesores a realizar CCO - hacia los estudiantes, la escuela y sus colegas - está disminuyendo. Los factores determinantes, como el conflicto entre el trabajo y la familia, el apoyo organizativo percibido, los valores de los maestros, la autoeficacia de los maestros, las pautas de comportamiento de los estudiantes y las ideologías de control de los alumnos de los maestros, parecen ser los factores dominantes que se atribuyen a los bajos

Path Double Covering Number of Product Graphs

A path partition or a path cover of a graph G is a collection P of paths in G such that every edge of G is in exactly one path in P. Various types of path covers such as Smarandache path k-cover, simple path covers have been studied by several authors by imposing conditions on the paths in the path covers. In this paper, We study the minimum number of paths which cover a graph such that each edge of the graph occurs exactly twice in two(distinct) paths

A Note on Isolate Domination

A set $S$ of vertices of a graph $G$ such that $\left\langle S\right\rangle$ has an isolated vertex is called an \emph{isolate set} of $G$. The minimum and maximum cardinality of a maximal isolate set are called the \emph{isolate number} $i_0(G)$ and the \emph{upper isolate number} $I_0(G)$ respectively. An isolate set that is also a dominating set (an irredundant set) is an \emph{isolate dominating set} \ (\emph{an isolate irredundant set}). The \emph{isolate domination number} $\gamma_0(G)$ and the \emph{upper isolate domination number} $\Gamma_0(G)$ are respectively the minimum and maximum cardinality of a minimal isolate dominating set while the \emph{isolate irredundance number} $ir_0(G)$ and the \emph{upper isolate irredundance number} $IR_0(G)$ are the minimum and maximum cardinality of a maximal isolate irredundant set of $G$. The notion of isolate domination was introduced in \cite{sb} and the remaining were introduced in \cite{isrn}. This paper further extends a study of these parameters