1,720,961 research outputs found
How Green is Democracy: Are There Any Democratic Advantages in Climate Change Mitigation?
No full textDespite various studies on the effect of political regimes on climate change, the relationships remain unclear and often contradictory. Previous empirical studies show that regime variations matter both in positive and negative ways even some studies suggesting the conditional effect of regime typologies for climate change mitigation. The study examines the relationships between political regimes and climate change as a way of robustness check of the existing empirical findings at a cross-national perspective. The study employs multiple quantitative measures of democracy and multiple estimation strategies to test if the results are consistent across various measures. Using the World Bank data and five different democracy indices, the study estimates the effect of political regimes on the per capita CO2 emissions. The study finds a trivial to moderate relationship between democracy and per capita CO2 emissions which are consistent across various democracy indices and empirical techniques. The results are not as ambitious as many previous studies suggested which seem to have some practical significance. The study concludes that in a typical democracy set-up which is a complex system, both positive and negative forces drive for and against climate change mitigation efforts culminating in a trivial to moderate effect for democratic political regimes in climate change mitigation
Key Success Domains for Business-IT Alignment in Cross-Governmental Partnerships
Full text linkBusiness-IT alignment is a crucial concept in the understanding of how profit-and-loss organizations use Information Technology (IT) to support their business requirements. This alignment concept becomes tangled when it is addressed in a socio-political context with non-financial goals and political agendas between independent organizations, i.e., in governmental settings. Collaborative problem-solving and coordination mechanisms are enabling government agencies to deal with such a complex alignment. In this chapter, the authors propose to consider four key domains for successful business-IT alignment in cross-governmental partnerships: partnering structure, IS architecture, process architecture, and coordination. Their choice of domains is based on three case studies carried out in cross-governmental partnerships, in Mexico, The Netherlands, and Canada, respectively. The business-IT alignment domains presented in this chapter can guide cross-governmental partnerships in their efforts to achieve alignment. Those domains are still open to further empirical confirmation or refutation. Although much more research is required on this important topic for governments, the authors hope that their study contributes to the pool of knowledge in this relevant research stream
Analysis and Visualization of Tissue-motion of Cranial Ultrasonogram Image Sequences for Newborn Babies
No full textThis thesis is submitted to the Department of Electrical and Electronic Engineering, Khulna University of Engineering & Technology in partial fulfillment of the requirements for the degree of Master of Science in Electrical and Electronic Engineering, May 2011.Cataloged from PDF Version of Thesis.Includes bibliographical references (pages 88-90).Cranial ultrasound scans are very essential part of the routine investigation of neonatal
intensive care. The scan ultrasound image sequence are not only used for real-time
diagnosis but also recorded as moving images in video recorder as ultrasonographic movie
for fitture diagnosis, offline analysis of ultrasonogram images and the study of tissue
velocity in neonatal cranium. The tissue motion in neonatal cranium is an important
physical parameter which is considered in discussing the pulsation strength of newborn
baby for pediatric diagnosis. The artery pulsation has a strong correlation with the blood
flow in the newborn baby head and tissue-motion has a relationship with artery pulsation.
Optical flow technique finds an excellent application in determining the tissue motion
A velocity quantitatively in cranial ultrasonograrn of newborn baby.
Cranial ultrasonograrn of newborn babies for different coronal and sagittal sections are
studied and the tissue motion velocity of neonatal cranium is analyzed using the optical
flow techniques. In order to calculate tissue motion velocity, gradient-based approaches of
optical flow techniques with different optical flow optimizations are used. Ultrasonogram
image sequences of 32 frames, 640 x 480 pixels/frame, 8bits/pixel, 33 ms/frame for
different coronal and sagival sections are used. Whole ultrasonogram is not useful for
analysis and small portion of ultrasonogram images are selected during analysis in the
region inside cranial bone. Tissue- motions are estimated in different coronal sections and
their errors are also estimated.
Further, the time variant tissue-motions are analyzed using discrete Fourier transform of
optical flow velocity. The pulsation is observed in the time variant tissue motion images
and strong pulsation is occurred in the harmonic frequencies of tissue-motion that has a
relation to the heartbeat frequency of a newborn baby which is helpful for pediatric
diagnosis.
Pulsation amplitudes, caused by artery pulsation due to blood now are also analyzed and
visualized from a video stream of ultrasound image sequence by using I D fast Fourier
transform in brightness mode for future diagnosis using direct pixel value. A new imaging
technique, named pulsation amplitude image is proposed. In the proposed method, the
tissue motion of typical coronal and sagittal sections of normal and asphyxiated neonates
are analyzed and visualized. Significant differences have been observed in cranial tissue
motion between normal and abnormal neonate. The results obtained in the present study
lead to determine pulsation amplitude that strongly contribute pediatricians in diagnosis of
newborn baby’s ischemic diseases.Muhammad Muinul IslamMaster of Science in Electrical and Electronic Engineerin
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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