1,721,040 research outputs found
Self-similar network traffic using Successive Random Addition (SRA) algorithm / Hani Hamira Harun
Full text linkSelf-similar traffic has an underlying dependence structure which exhibits long-range
dependence. This is in contrast to classical traffic models, such as Poisson, which
exhibit short-range dependence. Self-similar traffic may also exhibit short-range
dependence, but this is on its own insufficient to accurately parametric the traffic.
Studying self-similar traffic requires models for analytical work and generators for
simulation. Having generating algorithms that close to reflect real traffic is important
as they allow us to perform simulations that are similar to the real network traffic.
Without this, the results from simulations would not accurately reflect the results that
would be expected in the real world. In this project, we have used the Successive
random algorithm (SRA). Then, we have decided to use Variance time plot and R/S
statistics as our statistical analysis tools. We have test the sample path between
0.5<H<1. After we test on the SRA algorithm, we found that the results are not
accurate. But compares to RMD, the SRA samples result be more accurate. In term
data generation, SRA be slower than dFGN.
COPYRIGH
Awareness towards fertigation system at Polytechnic Jeli Kelantan (PJK) / Suza Hamira Suhaimin
Full text linkThis study investigated the awareness towards fertigation system among 102 respondents from Polytechnic Jeli Kelantan (PJK). There are 39 female and 63 male. Three variables involved in this study are understanding, perception and attitude for this study. This study is cross-sectional design. Cluster sampling method was used in this study and the questionnaire was distributed with self-administrative. The study was analyzed using SPSS 18.0 for descriptive analysis while Amos 18.0 was used for Structural Equation Modeling (SEM). The result shows that all of test on demographic variable (age, gender, level qualification and types of category occupation) is no significant influence to the respondent’s awareness. It explains that, that the respondents come from difference gender, age level qualification and types of category occupation they will have same awareness towards fertigation system. On the main hypothesis testing the results showed that perception and understanding has significant influence on awareness towards fertigation system. Recommendation on this study, PJK should do the program workshop on fertigation system for students and staffs. With this program, it may be able to open the minds of students and staff about the benefits of fertigation system and also can provide an attractive income to staff and studen
Antioxidant and toxicity studies of fruit peel extracts / Hamira Azrin Harun
Full text linkIn this study, the peel extracts of species from family Curcurbitacea that included Cucumis melo var. cantalupensis, Cucumis melo var. inodorus and Citrullus lanatus were investigated on their total phenolic content using Folin-Ciocalteau method, DPPH radical scavenging activity and toxicity. Methanol was used as the extracting solvents of each extracts. All of the three extracts exhibited the ability to scavenge free radicals. The highest scavenging effect was presented by methanolic extract of Cucumis melo var. inodorus (IC 50 =4.61) which was corresponding to its highest total phenolic content (64.2 ± 0.10 μg GAE/ml). Meanwhile, the lethality concentration presented by each extracts was less than IO μ1/ml. The results of this study indicate that methanol provided good extraction but at the same time might interfered the toxicity level presented by each extract
Socio-cultural impacts of tourism in Iran : a study of Masooleh and Sare'in / Hamira Zamani-Farahani
Full text linkThere has been unceasing interest in the study of socio-cultural impacts of tourism worldwide. The results of studies in this field are pertinent for planning and policy making purposes especially in the development of sustainable tourism. The main aim of this study was to examine the socio-cultural impacts of tourism and explore the factors that are related to host perceptions in the Islamic and developing country of Iran. This research focused on two small tourist destinations in Iran, Masooleh and Sare’in, where, tourism development is in its early stages.
Drawn from empirical studies and research as well as concepts and theories, a conceptual research framework was proposed. Based on the framework several hypotheses were developed to test the relationships between the independent variables, which include Tourism Development Characteristics, Host-Tourist Interaction, Host Profiles, and Religiosity, with the dependent variable, which is the perceived Socio-Cultural Impacts of tourism by local people. A structured questionnaire back-to-back translated into the Persian language was used as the main data collection method. All the occupied houses (the first 198) from the center of the main tourist areas of the two towns were sampled. A minimum of two adults (above 18 years old) from each house were requested to answer the questionnaire. Finally, a total of 500 usable questionnaires were returned and analyzed.
The results revealed that residents largely experience positive socio-cultural impacts of tourism development in their areas. They were also highly supportive of the current and the future tourism development. All the predictor variables of Tourism Development Characteristics, Host-Guest Interaction, Host Profiles, and Religiosity had significant relationships with Socio-Cultural Impacts of Tourism in the study areas. Among these predictors, Host-Tourist Interaction was found to be the most important factor in influencing the perception of socio-cultural impacts of tourism. The study contributes to the further extension of knowledge in socio-cultural impacts research when both the type and the level of Islamic religiosity have positive significant relationships with the perception of socio-cultural impacts of tourism. The socio-demographic profiles of gender, marital status, length of residency, educational achievement and employment in a tourism related job had significant relationships with the perception of the socio-cultural impacts of tourism in the areas.
The results of this study support the theories of Destination Life Cycle Model (Butler, 1980), Doxey Irritation Index (Doxey, 1976) Social Exchange theory (Ap, 1992) and Social Distance theory (Thyne et al., 2006). More importantly, the study has confirmed that Islamic religiosity did not, in principle, play a role in instilling negative perceptions towards tourism development. Based on the results some pertinent theoretical, managerial and marketing implications of the study are discussed
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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