1,720,959 research outputs found
Dilema & Permasalahan Koperasi Primordial (studi kasus Koperasi MG75)
Get PDFPrimordialism is a view or ideologies that hold fast to the things that was brought as a child, both of the traditions, customs, beliefs, and everything that is in the first environment (environmental culture of origin). Primordial cooperation in this context can be interpreted as a cooperation that gathers such members originated from, for examples, a single origin region,
alumni of certain schools, or one group bonded relationship in the past. MG75 Cooperation is a cooperation that gathers members of the alumni of the SMAN I High School in the town of Purworejo Class 1975. Since the founding in 2009 it has faced several problems and dilemmas such as: 1) Limited number of members and their domiciles covering the national territory led to legal entities applying for licenses (permission) had not yet been eligible, 2) The extent of the spread of the members also lead to difficulties in coordination, so that meetings of members do often not meet quorum, 3) Boards and members are still attached to their professional job, making it difficult in handling day-to-day operation of the cooperation, collecting capital, etc. But over time, when members had to retire in their workplace it is expected that they will concentrate more on this cooperation effort. In addition, by the time and experience, the boards and members are expected to grow their ability of entrepreneurship so as to improve the performance of the cooperation
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Sandstone Acidizing Simulation: Development of an Expert System
No full textVarious models to simulate sandstone acidizing processes in oil well stimulations have been presented in the past. The standard "lumped" model representing the sandstone acidizing process that has been used until recently considers one acid and two representative minerals. Although this model has been employed for years, investigators have found tpat the model does not account for acid (HF) consumption consistently and cannot extrapolate laboratory data to different operating conditions. A secondary dissolution/precipitation reaction is proposed to simulate the acidizing process more accurately. This leads to an improved model which represents the sandstone acidizing with two acid and three mineral equations. The new model has been implemented in a sandstone acidizing simulator called UT ACID. The first part of the research investigates the two-acid, three-mineral model and compares both models. The study provides results which confirm the findings by previous investigators. The simulator requires input files containing data about the formation properties, acidizing fluid system, and simulator parameters. One of the difficult parts in creating these input files is in the design of matrix acidizing fluids particularly the concentration and volume of the acid. The selection of acid fluids is a design process, an appropriate task for expert systems. This leads to another task for a complete acidizing simulation study. An expert system has been developed to help design sandstone acidizing fluid systems and create input files for the simulator. Required parameters for sandstone acidizing such as acid type, concentration, volume, and injection rate/pressure are first designed using the expert system. The output from the expert system is then used to create the input data for the UT ACID simulator. Given proper reservoir data including information about the damage, the expert system presents recommendations including the damage removal fluids, the acid systems if required, the injection pressure and schedule, and the input file for the simulator. Integration of the expert system, the simulator, and additional routines including X-Window visualization programs leads to the construction of ASSESS, a complete and user-friendly package for sandstone acidizing fluid design and simulation. Testing on this package shows satisfactory results.Petroleum and Geosystems Engineerin
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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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