1,720,968 research outputs found
Molluscicides potential of Acacia mangium (Willd.) and Gliricidia sepium (Jacq.) against Pomacea canaliculata (Lamark) / Muhammad Mu'izzuddin Zulkapli
Full text linkGolden Apple Snails or scientifically known as Pomacea canaliculata (Lamark) is still one of the major problems faced by paddy farmers. Both conventional chemical molluscicides and bio-molluscicides have been used to control the population of this pest. However, the current bio-molluscicides are costly and not suitable for mass production. In this study, two species of fast growing plants that are commonly can be found in Malaysia were tested for their potential molluscicidal activity against Pomacea canaliculata (Lamark). It was found that both selected plants are showing a positive molluscicidal activity against this pest. Additionally, this study found that there was no significant difference in the 24 hours mortality recorded of Pomacea canaliculata (Lamark) between the current practical bio-molluscicide that is Furcraea selloa var. marginata (Trel.) and Acacia mangium (Willd.). Study also had identified the LD50 of each plant at 24g for Furcraea selloa var. marginata (Trel.), 25g for Acacia mangium (Willd.) and 30g for Gliricidia sepium (Jacq.). More research and development should be done to highlight the potential of Acacia mangium (Willd.) as bio-molluscicide
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
Plant watering system using GSM and soil moisture sensor / Norhamizan Ismail & Mohd. Mu'izzuddin Abdul Razak
Full text linkNowadays, gardeners and plant enthusiasts alike are all facing the same troubles that come with picking up gardening. The problems include insufficient time for gardening, garden watering inaccessibility, and equipment inefficiency in other plant irrigation systems. The objective of this project is to make garden watering more efficient and practical, allow gardeners to have time to take care of their plants, and overcome the technical limitations. of previous irrigation systems. This project focuses on garden maintenance by analyzing the moisture of the soil in a set of intervals. If the dryness of the soil ( which is determined by measuring the soil bulk permittivity) meets the predetermined value, it will send a message to the user's cellphone informing the user that the plant's soil is dry. Then, the owner shall decide whether to water the plant or not by replying to the text message. Further improvements might include individual plant irrigation, solar panel implementation or even garden management through smart phone application. This project features an Arduino microcontroller, specifically the Arduino Soil Sensor, a GSM unit, and a water pump system. To be exact, the project allows the gardener to determine how much water is to be watered onto the plants
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
APPLYING HYDRAULIC FRACTURING IN EXTENDING PERFORATION LENGTH
Full text link"Applying Hydraulic Fracturing In Extending Perforation Length" is a final year project
which consist of two parts, gather relevant literature data and simulate pressure transient.
The main outcome is to evaluate the hydraulic fracturing treatment effectiveness in
extending perforation penetration. The core of this project is simulation using pressure
and production rate history in order to obtain reservoir data before and after hydraulic
fracturing. The author has divided Final Year Project I (FYP I) into two phases namely,
(1) Write literature review on the project, (2) Gather raw data on real case study
continuously for the whole FYP 1. In Final Year Project 2 (FYP 2), it is the continuous
from FYP 1 and focusing on full analysis of pressure and production rate data from real
well. Kappa Saphir Well Test Software is the main tool for this project. Analysis can be
performing after run the pressure and production data in the software. Firstly is analysis
on the well test job sequence. During this part, the author will separate the fluctuation of
plotted pressure data history accordingly to operation or job done following the time
period. Thus, the author can know the response of the pressure towards the job done by
engineer. Second, the author does the analysis on pressure transient. In this period,
selected reservoir model and type curve will try to be match with the plotted pressure. As
the model match, the well properties can be estimated. The analysis will be performing
on pressure and production data before and after hydraulic fracturing treatment. For the
last part, the author will evaluate the effectiveness of hydraulic fracturing. After gone
through with this project, the author conclude that hydraulic fracturing can increase the
production from a reservoir and perforation length as well as reservoir properties are
changing after performed hydraulic fracturing
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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