103,765 research outputs found
A grammar of Hamar : a South Omotic language of Ethiopia
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This study is the first-ever attempt at a comprehensive grammatical description of Hamar, a language spoken in South West Ethiopia by approximately 46.500 people. The study is based on 9 months of fieldwork carried out between 2012 and 2014 in Hamar territories. Language data was gathered from 14 native speakers in Hamar villages, and it amounts to 50 texts of varying lengths and genres. The grammar investigates the phonology, the morphology, the syntax and some pragmatic and discourse related features of Hamar and it is organized in 13 chapters followed by three appendices: appendix A and B consist of a selected lexicon of circa 1400 entries, appendix C includes three annotated Hamar texts.
Hamar is a fascinating language and it has revealed unique typological features: the noun classification system of Hamar for instance is a rare example of ʻnon-fixedʼ gender system, i.e. a system in which gender is not an inherent property of nouns, but optional. The grammar is of interests to typologists but also to linguists interested in comparative Afro-Asiatic studies: the grammar offers an overview of the classificatory issue of Hamar and South Omotic languages, and it includes an updated comparative list of South Omotic lexicon.
Labex ASLAN, Université de Lyon (Agence Nationale de la Recherce)Language Use in Past and Presen
Spectral reflectance characteristics of the Hamar Laghdad hydrothermal sequence, Morocco: Implications for the methane origin on Mars
No full textWe analyze and discuss reflectance spectra of carbonate rocks from the Hamar Laghdad area (Morocco), where evidences of interactions with hydrothermal, and, in some cases, methane enriched fluids derived from underlying volcanoclastic rocks, are reported in the literature. Deconvolution of the rock spectra into a sum of Gaussians, using MGM, resolved a number of both vibrational and electronic absorption features, mainly assigned to CO32-, Al-OH, and Fe2+, Fe3+, Cu, CF interaction processes, respectively. The associations of these absorption bands are exhaustive descriptions of the rock spectral properties. A spectral model of the Hamar Laghdad carbonate sequence was therefore delineated, based on the integration of these absorption band associations with XRF and Mössbauer analyses of the rock samples. The model involves: pure limestones and dolostones, limestone with iron carbonates, mixed carbonate and Al-silicate impure limestones, limestones with iron sulfides. The model points out the complexity of the spectral characteristics of rocks that underwent hydrothermal and partly methanogenic processes, but also suggests an alternative geologic scenario plausible for possible methanogenic activity in the Mars geologic past
Bibliographie Hilarion G. Petzold 1958 – 2009 mit Anhang als Einführung
No full textDieses Archiv enthält die Gesamtbibliographie der Werke des Autors nebst einiger Texte „Über H. G. Petzold“ im Schlussteil der Bibliographie sowie einen Anhang mit einer Einführung in die Architektur des Werkes in seinem wissenslogischen Aufbau als Ausarbeitung seines „Tree of Science Modells“ (2007).This archive contains the complete bibliography of the author and some texts about H. G. Petzold, moreover an epilogue with an introduction to the architecture of the works in its epistemological structure and composition and as an elaborations of Petzold’s „Tree of Science Modell (2007).https://www.fpi-publikation.de/polyloge/01-2009-petzold-h-g-gesamtbibliographie-h-g-petzold-1958-2009-updating-november2009/peerReviewedpublishedVersio
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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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3346: Samuel G. Freedman, author, 2013
No full textPhotograph of author Samuel G. Freedman, at NT Daily Slash meeting in the Mayborn School of Journalism at UNT
The Right to Strike under the United States Constitution: Theory, Practice, and Possible Implications for Canada
No full textAnswering critics of the Canadian Supreme Court's judgment in B.C. Health, the author argues that the Court laid the foundation for a principled and durable doctrine protecting constitutional labour rights, one that goes directly to the heart of the matter — the inequality of workers’ power in the employment relation. In the author’s view, two paths could lead from B.C. Health to the recognition of Charter protec- tion for a right to strike: one that treats the right as an accessory to col- lective bargaining, and one that upholds the right directly on the basis of the Charter values of equality and participation. The author supports the latter approach, contending that constitutional rights should be defined in relation to fundamental values, in a way that is not contingent on time-bound or fact-sensitive assessments about the role of strikes within a particular collective bargaining regime. Although a Charter right to strike may involve the courts in difficult choices about when to defer to legislative policy decisions, and courts may lack the institutional capac- ity to deal effectively with labour law issues, the author points out that judges can look to ILO standards for expert guidance. Noting that the U.S. experience in this area might be of considerable use to Canadians, the author concludes by providing an overview of American case law concerning a constitutional right to strike.Peer reviewe
Spectral reflectance characteristics of the Hamar Laghdad hydrothermal sequence, Morocco: Implications for the methane origin on Mars
No full textWe analyze and discuss reflectance spectra of carbonate rocks from the Hamar Laghdad area (Morocco), where evidences of interactions with hydrothermal, and, in some cases, methane enriched fluids derived from underlying volcanoclastic rocks, are reported in the literature. Deconvolution of the rock spectra into a sum of Gaussians, using MGM, resolved a number of both vibrational and electronic absorption features, mainly assigned to CO32−, Al–OH, and Fe2+, Fe3+, Cu, CF interaction processes, respectively. The associations of these absorption bands are exhaustive descriptions of the rock spectral properties. A spectral model of the Hamar Laghdad carbonate sequence was therefore delineated, based on the integration of these absorption band associations with XRF and Mössbauer analyses of the rock samples. The model involves: pure limestones and dolostones, limestone with iron carbonates, mixed carbonate and Al-silicate impure limestones, limestones with iron sulfides. The model points out the complexity of the spectral characteristics of rocks that underwent hydrothermal and partly methanogenic processes, but also suggests an alternative geologic scenario plausible for possible methanogenic activity in the Mars geologic past
Comparison of Control Algorithms for an Inverted Pendulum
No full textABSTRACT\ud
COMPARISON OF CONTROL ALGORITHMS FOR AN INVERTED\ud
PENDULUM\ud
by\ud
?? Trisha Annie Hamar 2009\ud
Master of Science in Electrical and Computer Engineering\ud
Electronic Engineering Option\ud
California State University, Chico\ud
Fall 2009\ud
A Proportional, Integral and Derivative controller, also known as a PID\ud
controller, was designed for a free-range inverted pendulum. The PID algorithm was\ud
compared to the Linear Quadratic Regulator, or LQR, on the inverted pendulum to\ud
quantify the merits of each algorithm based on performance. This study will present the\ud
controller designs, simulations, code and hardware implementation, as well as the\ud
results.\ud
The PID algorithm is a tuning process where the user adjusts gain values as\ud
needed. The LQR algorithm is a traditional digital control theory that utilizes state\ud
space design and weighting matrices. Simulations were performed on MATLAB and\ud
Simulink. Each algorithm was implemented in C programming into the ARM processor.\ud
Primary comparisons included ease of implementation, the complexity of the code, and\ud
the overall performance of the system.\ud
The PID algorithm performed better in trials and was easier to implement in\ud
the C programming language. The LQR algorithm was based on a linearized system and\ud
was not able to handle nonlinear components such as gear backlash.\ud
The results suggested that if the system were built on a linear guide rail\ud
instead of a free-range vehicle, the inverted pendulum may have exhibited better\ud
performance. A linear rail would greatly reduce any external disturbances or noise.\ud
This report will serve as an informational and instructional guide for future students who\ud
wish to pursue an inverted pendulum design.CSU, Chic
G-Rank: Unsupervised Continuous Learn-to-Rank for Edge Devices in a P2P Network
No full textRanking algorithms in traditional search engines are powered by enormous training data sets that are meticulously engineered and curated by a centralized entity. Decentralized peer-to-peer (p2p) networks such as torrenting applications and Web3 protocols deliberately eschew centralized databases and computational architectures when designing services and features. As such, robust search-and-rank algorithms designed for such domains must be engineered specifically for decentralized networks, and must be lightweight enough to operate on consumer-grade personal devices such as a smartphone or laptop computer. We introduce G-Rank, an unsupervised ranking algorithm designed exclusively for decentralized networks. We demonstrate that accurate, relevant ranking results can be achieved in fully decentralized networks without any centralized data aggregation, feature engineering, or model training. Furthermore, we show that such results are obtainable with minimal data preprocessing and computational overhead, and can still return highly relevant results even when a user’s device is disconnected from the network. G-Rank is highly modular in design, is not limited to categorical data, and can be implemented in a variety of domains with minimal modification. The results herein show that unsupervised ranking models designed for decentralized p2p networks are not only viable, but worthy of further research.https://github.com/awrgold/G-RankComputer Scienc
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