1,721,184 research outputs found
Cara Jitu Download di Internet: Mp3, Game, Video, Software, E Book, Gambar
No full textKebanyakan kita kecewa saat ingin mendownload sebuah file di internet yang ternyata harus regitrasi dahulu untuk mendapatkannya. Namun dengan beberapa langkah praktis saja. sebenarnya kita dapat dengan mudah mendapatkan file buruan kita.120 hal : 14 x 21 c
Lake Erie Hypoxia Simulations with ELCOM-CAEDYM
Full text linkThis paper presents the simulation of the dissolved oxygen (DO) dynamics in the central basin of Lake Erie using a three-dimensional hydrodynamic model (ELCOM) coupled with an aquatic ecological model (CAEDYM). The objective was to simulate the recurrent hypoxic conditions that occur in the shallow hypolimnion of the central basin of the lake after the onset of stratification. In early spring, oxygen concentrations are relatively high, but by late summer, large areas in the central basin of Lake Erie are effectively hypoxic (andlt;2 mg l-1). This numerical modeling study successfully reproduced horizontal variability and vertical decay of dissolved oxygen during 1994. The magnitude of oxygen depletion has been observed to vary inter-annually depending on water temperature and the thickness of the hypolimnion, which will be investigated further with ELCOM -CAEDYM simulations for other years
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
The effect of turbid inflows into Winam Gulf, Lake Victoria: a 3D modeling study with ELCOM-CAEDYM
No full textThe catchment of Winam Gulf in Kenya supports a population of 4.5 million inhabitants. Much of the population practices subsistence agriculture in the catchment that has led to high rates of sediment erosion and ultimately highly turbid rivers. Hence, every year during the two equatorial wet seasons, large quantities of catchment sediments are deposited into Winam Gulf. In Apr.-May 2005 an intensive field investigation was undertaken to determine the exchange dynamics between the northeastern offshore waters of Lake Victoria and Winam Gulf through Rusinga Channel. One of the outcomes of this scientific study was the validation of ELCOM (Estuary, Lake and Coastal Ocean Model), a three-dimensional (3D) hydrodynamics model, over Rusinga Channel and Winam Gulf. CAEDYM (Computational Aquatic Ecological DYnamic Model) is a water quality model that can be readily linked to ELCOM. In this modeling study we linked ELCOM and CAEDYM to evaluate the transport and fate of riverine sediments in Winam Gulf from several of the large rivers. Several size classes of suspended solids were evaluated. The extent and concentrations of sediment plumes were modeled over a range of riverine discharge. Further, simulations were run with reduced riverine sediment concentrations to evaluate the effect of turbidity levels in Winam Gulf if catchment improvement practices were implemented. This study illustrates that application of coupled 3D hydrodynamic and water quality models can serve to improve understanding of sediment plume dynamics in tropical lakes.PublishedTurbidity; Turbulence; Modelling; Hydrodynamics; Sedimentation; Inland waters; Water bodies; Freshwater lakes; Catchment area; Land use; River discharge; Inflow; Environmental protectio
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
- …
