1,322 research outputs found
Honors for Dr. E. M. Jellinek at Seventy
No full textA clipping from the SSAS Alumni News honoring E. M. Jellinek on his 70th birthday, based on the article written by M. K. (Mark Keller) for the Quarterly Journal of Studies on Alcohol, published in issue, 21(1), i–4 (1960)
Levels of Selection in Evolution/ Laurent Keller.
No full textIn English.Ever since the groundbreaking work of George Williams, W. D. Hamilton, and Richard Dawkins, evolutionary biologists have recognized that natural selection generally does not operate for the good of the group, but rather for the good of lower-level units such as the individual, the cell, even the gene. One of the fundamental problems of biology is: what keeps competition between these various levels of natural selection from destroying the common interests to be gained from cooperation? In this volume twelve prominent scientists explore this question, presenting a comprehensive survey of the current theoretical and empirical research in evolutionary biology. Recent studies show that at many levels of biological organization, mechanisms have evolved to prevent potential conflict in natural selection. Editor Laurent Keller's aim in this book is to bring together leading researchers from all biological disciplines to outline these potential conflicts and discuss how they are resolved. A multi-level approach of this kind allows important insights into the evolution of life, as well as bridging the long-standing conceptual chasm between molecular and organismal biologists. The chapters here follow a rigorous theoretical framework, giving the book an overall synergy that is unique to multi-authored books. The contributors, in addition to the editor, are H. Charles J. Godfray, Edward Allen Herre, Dawn M. Kitchen, Egbert Giles Leigh, Jr., Catherine M. Lessells, Richard E. Michod, Leonard Nunney, Craig Packer, Andrew Pomiankowski, H. Kern Reeve, John Maynard Smith, and Eörs Szathmáry.Reeve, H. Kern / Keller, Laurent -- Leigh, Egbert Giles -- Szathmáry, Eörs -- Michod, Richard E. -- Lessells, Catherine M. -- Godfray, H. Charles J. -- Pomiankowski, Andrew -- Keller, Laurent / Reeve, H. Kern -- Kitchen, Dawn M. / Packer, Craig -- Smith, John Maynard -- Herre, Edward Allen -- Nunney, Leonard -- Frontmatter -- Contents -- Acknowledgments -- Contributors -- 1. Levels of Selection: Burying the Units-of- Selection Debate and Unearthing the Crucial New Issues / 2. Levels of Selection, Potential Conflicts, and Their Resolution: The Role of the "Common Good" / 3. The First Replicators / 4. Individuality, Immortality, and Sex / 5. Sexual Conflict in Animals / 6. Parent-Offspring Conflict / 7. Intragenomic Conflict / 8. Dynamics of Conflicts within Insect Societies / 9. Complexity in Vertebrate Societies / 10. Conflict and Cooperation in Human Societies / 11. Laws Governing Species Interactions? Encouragement and Caution from Figs and Their Associates / 12. Lineage Selection: Natural Selection for Long-Term Benefit / Literature Cited -- Author Index -- Subject Index1 online resource
Single- and Multi-carrier Quadrature Amplitude Modulation: Principles and Applications for Personal Communications, WATM and Broadcasting: 2nd
No full textSingle- and Multi-carrier Quadrature Amplitude Modulation Principles and Applications for Personal Communications, WLANs and Broadcasting L. Hanzo Department of Electronics and Computer Science, University of Southampton, UK W. Webb Motorola, Arlington Heights, USA formerly at Multiple Access Communications Ltd, Southampton, UK T. Keller Ubinetics, Cambridge Technology Centre, Melbourn, UK formerly at Department of Electronics and Computer Science, University of Southampton, UK Motivated by the rapid evolution of wireless communication systems, this expanded second edition provides an overview of most major single- and multi-carrier Quadrature Amplitude Modulation (QAM) techniques commencing with simple QAM schemes for the uninitiated through to complex, rapidly-evolving areas, such as arrangements for wide-band mobile channels. Targeted at the more advanced reader, the multi-carrier modulation based second half of the book presents a research-orientated outlook using a variety of novel QAM-based arrangements. * Features six new chapters dealing with the complexities of multi-carrier modulation which has found applications ranging from Wireless Local Area Networks (WLAN) to Digital Video Broadcasting (DVB) * Provides a rudimentary introduction for readers requiring a background in the field of modulation and radio wave propagation * Discusses classic QAM transmission issues relevant to Gaussian channels * Examines QAM-based transmissions over mobile radio channels * Incorporates QAM-related orthogonal techniques, considers the spectral efficiency of QAM in cellular frequency re-use structures and presents a QAM-based speech communications system design study * Introduces Orthogonal Frequency Division Multiplexing (OFDM) over both Gaussian and wideband fading channels By providing an all-encompassing self-contained treatment of single- and multi- carrier QAM based communications, a wide range of readers including senior undergraduate and postgraduate students, practising engineers and researchers alike will all find the coverage of this book attractive
Transition-transversion bias is not universal: A counter example from grasshopper pseudogenes
No full text(c) 2007 Keller et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
Linguocultural features of the novel Volga, Volga and The Beautiful Women by Russian-German writer Andreas Keller
No full textThe article is dedicated to the novel «Volga, Vodka and the Beautiful Women» (2011) by the Russian-German author Andreas Keller. Some fundamental problems of sociolinguistics and cultural studies are examined. The research deals with the problems of self-identity, the interaction between two different cultures, as well as the questions of cooperation between the author and the publisher in the context of the editorial preparation of the novel on the Russian-German topic.Der Artikel widmet sich dem Roman «Wolga, Wodka und die schönen Frauen» (2011) vom russlanddeutschen Autor Andreas Keller. Es werden am Beispiel der Romanedition einige grundlegende Probleme der Soziolinguistik und Kulturwissenschaft betrachtet. Die Forschung beschäftigt sich mit den Problemen der Selbstidentität, der Interaktion zwischen zwei verschiedenen Kulturen, sowie mit den Fragen der Zusammenarbeit zwischen dem Autor und dem Verlag im Rahmen der editorischen Erstellung des Romans zum russisch-deutschen Thema
Non-tax revenue and subnational democracy: evidence from Colombia
No full textAn influential group of political economists posits a negative relationship between the relative size of non-tax revenues in public balance sheets and the level of democracy in a given county. While empirical evidence for this proposition is largely based on cross-national studies, scholars have largely neglected subnational contexts as important domains of research. Addressing this disjuncture, the author studies the electoral impact of two important subnational non-tax revenues - natural resource royalties and central-government fiscal transfers - at the municipal level in Colombia. Employing a propensity score matching approach to attenuate problems of omitted variable bias, a quantitative analysis of Colombia's 1119 municipalities shows that higher levels of fiscal transfers and petroleum royalties had no discernible impact on the average level of competitiveness in the 2007 and 2011 municipal elections. If anything, there seems to be a positive impact of non-tax revenues on electoral contestation. Supported by qualitative evidence from theoretical outliers in the set of observations, the results suggest that non-tax revenue promotes electoral competition by raising the stakes of attaining political office. At the same time, abundance in fiscal transfers and resource royalties may undermine democratic governance through means that are not reflected in electoral margins.M.A.Includes bibliographical referencesIncludes vitaby Lukas Konstantin Kelle
Implementasi Algoritma Not So Naive dan Algoritma Burkhard-Keller Tree pada Aplikasi Kamus Bahasa Indonesia-Hokkian Berbasis Android
No full textBahasa Hokkian umumnya dikenal sebagai bahasa ibu komunitas Tionghoa di Medan. Namun belum ada metode yang digunakan untuk mempelajari bahasa tersebut karena masih dilakukan secara manual. Oleh karena itu diperlukan suatu media yang dapat mempermudah seseorang dalam mempelajari bahasa tersebut yaitu aplikasi smartphone yang praktis. Kemudahan dalam mengakses suatu informasi juga sangat penting. Untuk mempermudah seseorang mempelajari bahasa tersebut penulis membuat aplikasi kamus offline berbasis Android dengan menggunakan algoritma Not So Naive sebagai algoritma exact string matching dan algoritma Burkhard-Keller Tree sebagai algoritma approximate string matching dengan menggunakan sistem manajemen database SQLite sebagai media penyimpanan data. Penelitian ini bertujuan untuk membuktikan kelebihan dan kekurangan masing-masing algoritma dalam mengakses suatu informasi serta menampilkan hasil running time kedua algoritma. Dalam hal proses pencarian, kedua algoritma memiliki cara kerja yang berbeda. Algoritma Not So Naive mengidentifikasi terlebih dahulu dua kasus untuk menentukan nilai pergeseran, yang dapat dilakukan sebanyak 2 posisi ke kanan sedangkan algoritma Burkhard-Keller Tree mencari kata berdasarkan batas atas dan batas bawah serta batas toleransi kesalahan yang telah ditetapkan. Hasil penelitian menunjukkan bahwa waktu pencarian algoritma Burkhard-Keller Tree meningkat sebesar 58,26% dan 74% pada algoritma Not So Naive seiring dengan meningkatnya ukuran database. Algoritma Not So Naive memiliki rata-rata running time 25,45ms dan rata-rata running time sebesar 59,95ms pada algoritma Burkhard-Keller Tree.The Hokkien language is generally known as the mother tongue of the Chinese community in Medan. However, there is no method used to learn the language because it is still done manually. Therefore, we need a form of media that can make it easier for someone to learn the language, namely a practical smartphone application. Ease of accessing information is also very important. To make it easier for someone to learn the language, the author creates an Android-based offline dictionary application using the Not So Naive algorithm as an exact string matching algorithm and the Burkhard-Keller Tree algorithm as an approximate string matching algorithm using the SQLite database management system as a data storage medium. This study aims to prove the advantages and disadvantages of each algorithm in accessing information and display the results of the running time of both algorithms. In regards to the search processes, the two algorithms have a different way of working. The Not So Naive algorithm first identifies two cases to decide the value of the shift, which can be done in 2 positions to the right, while the Burkhard-Keller Tree algorithm looks for words based on predetermined upper and lower limits and fault tolerance limits. The results showed that the search time for the Burkhard-Keller Tree algorithm increased by 58,26% and 74% for the Not So Naive algorithm as the database size increased. The Not So Naive algorithm has a mean running time of 24.85 ms and a mean running time of 60.4 ms on the Burkhard-Keller Tree algorithm.96 HalamanSkripsi Sarjan
The Classified Abstract Archive of the Alcohol Literature (CAAAL) today
No full textThe Classified Abstract Archive of the Alcohol Literature (CAAAL) is a collection of approximately 20,000 abstracts prepared by Center staff from 1939 through 1977 of the scientific and scholarly alcohol literature (journal articles, published and unpublished reports, monographs). The publication of CAAAL ceased in 1978.
A manual is provided for use in subject searching: Keller, M., Efron, V., & Jellinek, E. M. (1965). CAAAL manual: A guide to the use of the Classified Abstract Archive of the Alcohol Literature. New Brunswick, NJ: Publications Division, Rutgers Center of Alcohol Studies.
The abstracts were printed on McBee sorting cards that were punched (around the edges) according to subject codes listed in the CAAAL Manual. Access is provided by author through the library’s master catalog, a print author catalog divided into 10-year periods currently in the Rutgers University Library Annex, by CAAAL number or by subject using a needle-sort method.
The McBee punch card provides information available for each article, including author, title, publication data, and an abstract, usually written by CAS staff. In addition to the English-language literature, publications in several other languages were covered too.The photo was taken at the Center of Alcohol Studies Library in 2015 by library staff
Assisting reading and analysis of text documents by visualization
No full textThe research reported here examined the use of computer generated graphics as a means to assist humans to analyse text documents which have not been subject to markup. The approach taken was to survey available visualization techniques in a broad selection of disciplines including applications to text documents, group those techniques using a taxonomy proposed in this research, then develop a selection of techniques that assist the text analysis objective. Development of the selected techniques from their fundamental basis, through their visualization, to their demonstration in application, comprises most of the body of this research. A scientific orientation employing measurements, combined with visual depiction and explanation of the technique with limited mathematics, is used as opposed to fully utilising any one of those resulting techniques for performing complete text document analysis.
Visualization techniques which apply directly to the text and those which exploit measurements produced by associated techniques are considered. Both approaches employ visualization to assist the human viewer to discover patterns which are then used in the analysis of the document. In the measurement case, this requires consideration of data with dimensions greater than three, which imposes a visualization difficulty. Several techniques for overcoming this problem are proposed. Word frequencies, Zipf considerations, parallel coordinates, colour maps, Cusum plots, and fractal dimensions are some of the techniques considered.
One direct application of visualization to text documents is to assist reading of that document by de-emphasising selected words by fading them on the display from which they are read. Three word selection techniques are proposed for the automatic selection of which words to use.
An experiment is reported which used such word fading techniques. It indicated that some readers do have improved reading speed under such conditions, but others do not. The experimental design enabled the separation of that group which did decrease reading times from the remaining readers who did not. Measurement of comprehension errors made under different types of word fading were shown not to increase beyond that obtained under normal reading conditions.
A visualization based on categorising the words in a text document is proposed which contrasts to visualization of measurements based on counts. The result is a visual impression of the word composition, and the evolution of that composition within that document.
The text documents used to demonstrates these techniques include English novels and short stories, emails, and a series of eighteenth century newspaper articles known as the Federalist Papers. This range of documents was needed because all analysis techniques are not applicable to all types of documents. This research proposes that an interactive use of the techniques on hand in a non-prescribed order can yield useful results in a document analysis. An example of this is in author attribution, i.e. assigning authorship of documents via patterns characteristic of an individual's writing style. Different visual techniques can be used to explore the patterns of writing in given text documents.
A software toolkit as a platform for implementing the proposed interactive analysis of text documents is described. How the techniques could be integrated into such a toolkit is outlined. A prototype of software to implement such a toolkit is included in this research. Issues relating to implementation of each technique used are also outlined
A case of EDTA-dependent pseudothrombocytopenia: simple recognition of an underdiagnosed and misleading phenomenon
No full text1. BMC Clin Pathol. 2014 May 1;14:19. doi: 10.1186/1472-6890-14-19. eCollection
2014.
A case of EDTA-dependent pseudothrombocytopenia: simple recognition of an
underdiagnosed and misleading phenomenon.
Nagler M, Keller P, Siegrist D, Alberio L.
Author information:
Department of Hematology and Central Hematology Laboratory, Inselspital
University Hospital and University of Berne, CH-3010 Berne, Switzerland.
BACKGROUND: EDTA-dependent pseudothrombocytopenia (EDTA-PTCP) is a common
laboratory phenomenon with a prevalence ranging from 0.1-2% in hospitalized
patients to 15-17% in outpatients evaluated for isolated thrombocytopenia.
Despite its harmlessness, EDTA-PTCP frequently leads to time-consuming, costly
and even invasive diagnostic investigations. EDTA-PTCP is often overlooked
because blood smears are not evaluated visually in routine practice and
histograms as well as warning flags of hematology analyzers are not interpreted
correctly. Nonetheless, EDTA-PTCP may be diagnosed easily even by general
practitioners without any experiences in blood film examinations. This is the
first report illustrating the typical patterns of a platelet (PLT) and white
blood cell (WBC) histograms of hematology analyzers.
CASE PRESENTATION: A 37-year-old female patient of Caucasian origin was referred
with suspected acute leukemia and the crew of the emergency unit arranged
extensive investigations for work-up. However, examination of EDTA blood sample
revealed atypical lymphocytes and an isolated thrombocytopenia together with
typical patterns of WBC and PLT histograms: a serrated curve of the platelet
histogram and a peculiar peak on the left side of the WBC histogram. EDTA-PTCP
was confirmed by a normal platelet count when examining citrated blood.
CONCLUSION: Awareness of typical PLT and WBC patterns may alert to the presence
of EDTA-PTCP in routine laboratory practice helping to avoid unnecessary
investigations and over-treatment.
PMCID: PMC4012027
PMID: 24808761 [PubMed
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