cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Critical Crop - Weed Competition Period and Yield Loss Determination in Transplanted Tomato (Lycopersicon esculentum M.) at Guder Ethiopia
Creators: name: Amare, Tesfaye
name: Sileshi, Frehiwot
name: Hamza, Ibrahim
Publisher: name: Journal of Science and Sustainable Development
Year: 2016

description: A field experiment was conducted for two consecutive cropping seasons of 2013 and 2014 to determine the critical period of weed competition and yield loss in tomato at Guder, Ethiopia. Quantitative series of both increasing duration of weedy and weed free periods were compared with complete weed free and weedy check. The experiment comprised of fourteen treatments laid in a randomize complete block design (RCBD) with three replications. The experimental site was infested with different weed species belonging to different families. In 2013 cropping season, 11 weed species belonging to 9 families were identified. Among the identified species, 81.81% were broadleaf weeds whereas sedges and grass made up 9.09% and 9.1% respectively. In 2014 cropping season the experimental site was infested with 12 different weed species belonging to 8 different families. Eighty three percent were broad leaved weeds while the remaining 8.33 % and 8.33 % were sedges and grass weeds, respectively. Pooled data revealed that, Amaranthus spp, Amaranthus hybridus L., Bidens pilosa L., Commelina benghalensis L., Datura stramonium L., Guizotia scabra (Vis.) Chiov., Galinsoga parviflora Cav., Ipomea cariocarpa and Nicandra physalodes Scop were among the predominant broadleaved weeds, whereas Digitaria abyssinica (A. Rich.) Stapf and Cyperus esculentus L. were the common grass and sedge weeds respectively. Significant differences in density, weed dry biomass, tomato yield and relative yield loss were observed in both years. Unweeded plots resulted in a yield reduction of 87.5 in 2013 and 90.8% in 2014 when compared to the yield recorded in weed free condition. Results indicated that to prevent greater than 10% yield loss, the maximum time for which weeds could be allowed to grow after crop transplant was 30 days, and the crop must be free of weeds from 60-75 days after transplanting to prevent a predetermined level of yield loss.
description: Journal of Science and Sustainable Development, Vol. 4 No. 2 (2016)
Evidence For A Mild Steepening And Bottom-Heavy IMF In Massive Galaxies From Sodium And Titanium-Oxide Indicators
Creators: name: Spiniello, C.
name: Trager, S. C.
name: Koopmans, L. V. E.
name: Chen, Y.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We measure equivalent widths (EW) - focussing on two unique features (NaI and TiO2) of low-mass stars (<0.3M\odot) - for luminous red galaxy spectra from the the Sloan Digital Sky Survey (SDSS) and X-Shooter Lens Survey (XLENS) in order to study the low-mass end of the initial mass function (IMF). We compare these EWs to those derived from simple stellar population models computed with different IMFs, ages, [α/Fe], and elemental abundances. We find that models are able to simultaneously reproduce the observed NaD λ5895 and Na I λ8190 features for lower-mass (\sim σ\ast) early-type galaxies (ETGs) but deviate increasingly for more massive ETGs, due do strongly mismatching NaD EWs. The TiO2 λ6230 and the Na I λ8190 features together appear to be a powerful IMF diagnostic, with age and metallicity effects orthogonal to the effect of IMF. We find that both features correlate strongly with galaxy velocity dispersion. The XLENS ETG (SDSSJ0912+0029) and an SDSS ETG (SDSSJ0041-0914) appear to require both an extreme dwarf-rich IMF and a high sodium enhancement ([Na/Fe] = +0.4). In addition, lensing constraints on the total mass of the XLENS system within its Einstein radius limit a bottom-heavy IMF with a power-law slope to x \leq 3.0 at the 90% C.L. We conclude that NaI and TiO features, in comparison with state-of-the-art SSP models, suggest a mildly steepening IMF from Salpeter (dn/dm \propto m-x with x = 2.35) to x \approx 3.0 for ETGs in the range σ = 200 - 335 km s-1.
description: 5 pages, 2 figures, 2 tables
สมรรถนะการบริหารของนักบริหารงานการศึกษาที่ส่งผลต่อประสิทธิผลการดำเนินงานศูนย์พัฒนาเด็กเล็กสังกัดองค์กรปกครองส่วนท้องถิ่นในจังหวัดนครพนม
Creators: name: วราภรณ์ ทิพสุข
Publisher: name: Facilty of Education Rajabhat Maha Sarakham University
Year: 2563
Subjects: สมรรถนะการบริหาร
ประสิทธิผลการดำเนินงาน
ศูนย์พัฒนาเด็กเล็ก
องค์กรปกครองส่วนท้องถิ่น

description: Journal of Education, 17, 3, 101-115
Institutional Solutions to the Principal-Agent Problem in African Health Care
Creators: name: Leonard, Kenneth L.
name: Leonard, David K.
Publisher: name: Columbia University
Year: 1998
Subjects: Economics
Public health

description: Free markets for health care in Africa do not function properly, in that patients exhibit willingness to pay for health care and yet practitioners are unable to sell their services. It is widely acknowledged that health markets everywhere are troubled with imperfect information. Therefore it is no surprise that free markets and spot contracts do not lead to an efficiently functioning market for health care. When issues of agency are not resolved we find practitioners specializing in the sale of pharmaceuticals but not using their skills as diagnosticians. Mechanisms that can reduce agency cost are beneficial to both patients and practitioners. This paper draws on theory and empirical evidence to examine what institutions are necessary to solve the problems of imperfect information in this context. We dismiss government regulation because the regulatory capacity does not exist in most African countries. Theory suggests that self-regulation by professional bodies should arise as privatization continues. Empirical evidence, however, suggests that this conclusion is overly-optimistic. On the other hand, referral networks perform much the same function but do not require centralized control. The most successful institution for the delivery of quality medical care in Africa is that of independent, pre-existing value-based organizations (missions) and we suggest their choice of institutional form has contributed to their success.
การพัฒนารูปแบบการเรียนรู้โดยใช้เทคนิคซินเนคติกส์ร่วมกับการเรียนรู้แบบนำตนเองที่มีเว็บสนับสนุนเพื่อส่งเสริมความคิดสร้างสรรค์และความสามารถในการเรียนรู้ด้วยตนเองของนักเรียนระดับประถมศึกษา
Creators: name: นวลจันทร์ ตระกูลวาง
Publisher: name: Facilty of Education Rajabhat Maha Sarakham University
Year: 2563
Subjects: ความคิดสร้างสรรค์
ซินเนคติกส์
การเรียนรู้แบบนำตนเอง

description: Journal of Education, 17, 3, 117-128
The Mass of the Planet-hosting Giant Star Beta Geminorum Determined from its p-mode Oscillation Spectrum
Creators: name: Hatzes, A. P.
name: Zechmeister, M.
name: Matthews, J.
name: Kuschnig, R.
name: Walker, G. A. H.
name: Doellinger, M.
name: Guenther, D. B.
name: Moffat, A. F. J.
name: Rucinski, S. M.
name: Sasselov, D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We use precise radial velocity measurements and photometric data to derive the frequency spacing of the p-mode oscillation spectrum of the planet-hosting star Beta Gem. This spacing along with the interferometric radius for this star is used to derive an accurate stellar mass. A long time series of over 60 hours of precise stellar radial velocity measurements of Beta Gem were taken with an iodine absorption cell and the echelle spectrograph mounted on the 2m Alfred Jensch Telescope. Complementary photometric data for this star were also taken with the MOST microsatellite spanning 3.6 d. A Fourier analysis of the radial velocity data reveals the presence of up to 17 significant pulsation modes in the frequency interval 10-250 micro-Hz. Most of these fall on a grid of equally-spaced frequencies having a separation of 7.14 +/- 0.12 micro-Hz. An analysis of 3.6 days of high precision photometry taken with the MOST space telescope shows the presence of up to 16 modes, six of which are consistent with modes found in the spectral (radial velocity) data. This frequency spacing is consistent with high overtone radial pulsations; however, until the pulsation modes are identified we cannot be sure if some of these are nonradial modes or even mixed modes. The radial velocity frequency spacing along with angular diameter measurements of Beta Gem via interferometry results in a stellar mass of M = 1.91 +/- 0.09 solar masses. This value confirms the intermediate mass of the star determined using stellar evolutionary tracks. Beta Gem is confirmed to be an intermediate mass star. Stellar pulsations in giant stars along with interferometric radius measurements can provide accurate determinations of the stellar mass of planet hosting giant stars. These can also be used to calibrate stellar evolutionary tracks.
description: Accepted by Astronomy and Astrophysics
Towards a community-endorsed data steward profession description for life science research
Creators: name: Scholtens, Salome
name: Anbeek, Petronella
name: Bohmer, Jasmin
name: Brullemans-Spansier, Mirjam
name: Geest, Marije Van Der
name: Jetten, Mijke
name: Staiger, Christine
name: Slouwerhof, Inge
name: Gelder, Celia W G Van
Publisher: name: Zenodo
Year: 2019
Subjects: Data Management
Data Stewardship
Training
Skill building
Competencies
Life Sciences

description: This document contains the summary of the ZonMw funded project proposal “Towards a community-endorsed data steward profession description for Life Science research” and is the starting document of the Zenodo Community with that same name. Sufficient, high quality data steward capacity in projects and institutes is one of the requirements for FAIR data management and research in the field of personalised health. The overall project aim is to professionalise the data steward function within the life-sciences domain, with a special focus on the implementation of the FAIR data principles. The project will work towards a common job description and an agreement on knowledge, skills and competencies of a data steward that is broadly supported within the Dutch life-sciences community. These knowledge, skills and competencies will be translated into concrete learning objectives, which in turn will be used to develop an education line and training material for data stewards (including a design for an eLearning module). Sustainable implementation and alignment with existing education will be ensured. This 1-year project will be executed by a core team in close collaboration with a consultation committee consisting of representatives of the main stakeholders in the domain.
description: This project is funded by the ZonMw Personalised Medicine Programme under Dossier number: 80-84600-98-3007. The project period is Aug 2018 - July 2019. Additional funding will be provided by UMCG, UMCU, Radboud University Nijmegen, Radboudumc and DTL/ELIXIR-Netherlands.
The Right to Remain Anonymous: Anonymous Speakers, Confidential Sources and the Public Good
Creators: name: Hanamirian, Jocelyn
Publisher: name: Columbia University
Year: 2012
Subjects: subject: Confidential communications--Press
subject: Internet
subject: Online identities
subject: Internet--Law and legislation
subject: Confidential communications
subject: Law
subject: FOS: Law
subject: Journalism

description: In the digital age, the news media gives voice to anonymous speakers in two ways: reporters may extend confidentiality to sources in exchange for newsworthy information, or a news website may host an online comment function that allows readers to post their reactions to content pseudonymously. Of these two groups of anonymous speakers, only online posters enjoy certain First Amendment protection against a subpoena seeking disclosure of their identities. The reporter's privilege has always been legally defined as the professional privilege of a reporter to maintain the confidentiality of his sources. Yet as with all evidentiary privileges, the reporter's privilege serves both private and public ends. Historically, state statutes and state common law have protected the private arrangement that enables sources to disclose information without fear of reprisal, and journalists to gain newsworthy content, because this relationship furthers the free flow of information to the public. By contrast, protection for anonymous speakers has always been rooted in the First Amendment under a concern that forced identification may chill speech.
Performing Pearl: Drama, Middle English Text and Performance Based Research in Medieval Studies
Creators: name: Gibbings, Colin
Publisher: name: Arts
Year: 2018
Subjects: subject: Pearl
subject: The Wanderer
subject: Performance-Based Research
subject: Performance as Research
subject: Arts
subject: Performance
subject: Theater
subject: Education--Language and Literature
subject: Literature--Medieval

description: Can formal performance help support research on medieval texts? Can performance help elucidate medieval texts to unfamiliar audiences? This thesis looks at my efforts over the past two years in my MFA attempting to answer these two questions. My research has covered formal performance practice and two experimental performance pieces which have sought to provide evidence in support of a long-term academic trajectory. My thesis examines my work over two stages handled in four chapters. The first two chapters illustrate development of performance practice. Chapter 2 looks at performance practice in the theatrical field and includes physical and vocal work, creative writing, and research methods. Chapter 3 looks at performance practice in the Medieval Studies field and includes historical context, manuscript studies and language studies. Ultimately, these two chapters attempt to demonstrate how we can bridge Theatre and Medieval Studies. The second two chapters look at my performance work itself. Chapter 4 discusses how I applied the contexts described in chapter 3 to my performances of two medieval poems, the Old English The Wanderer, and the Middle English Pearl. Chapter 5 discusses the development and presentation of both poems. For Pearl, I provide a scene-by-scene breakdown including images to discuss more fully how it felt to perform a medieval poem on stage. Ultimately, I believe my work has shown tremendous potential for performance work within the Medieval Studies framework. Future work will have to be done to answer continued questions. There are not obvious answers to these questions. As I proceed to my PhD, I will be pursuing these answers through what I have learned and developed in my MFA.
Deformed photon-added nonlinear coherent states and their nonclassical properties
Creators: name: Safaeian, O
name: Tavassoly, M K
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we will try to present a general formalism for the construction of {\it deformed photon-added nonlinear coherent states} (DPANCSs) $|α, f, m>$, which in special case lead to the well-known photon-added coherent state (PACS) $|α, m>$. Some algebraic structures of the introduced DPANCSs are studied and particularly the resolution of the identity, as the most important property of generalized coherent states, is investigated. Meanwhile, it will be demonstrated that, the introduced states can also be classified in the $f$-deformed coherent states, with a special nonlinearity function. Next, we will show that, these states can be produced through a simple theoretical scheme. A discussion on the DPANCSs with negative values of $m$, i.e., $|α, f, -m>$, is then presented. Our approach, has the potentiality to be used for the construction of a variety of new classes of DPANCSs, corresponding to any nonlinear oscillator with known nonlinearity function, as well as arbitrary solvable quantum system with known discrete, nondegenerate spectrum. Finally, after applying the formalism to a particular physical system known as Pöschl-Teller (P-T) potential and the nonlinear coherent states corresponding to a specific nonlinearity function $f(n)=\sqrt n$, some of the nonclassical properties such as Mandel parameter, second order correlation function, in addition to first and second-order squeezing of the corresponding states will be investigated, numerically.
description: 21 pages, 11 figures
Contributions to Discrete Mathematics, Vol 3, No 2 (2008)
Creators: name: Faculty Of Science, University Of Calgary
Publisher: name: Faculty of Science, University of Calgary
Year: 2008

description: Astral (n_4) configurations of pseudolines
LC reductions yield isomorphic simplicial complexes
Colourful transversal theorems
Partitions with parts occurring at most thrice
A generalization of the q-Pfaff-Saalschütz formula
Fold and Mycielskian on homomorphism complexes
A new example of non-amorphous association schemes
Partially critical indecomposable graphs
Low-Wage Employment Subsidies in a Labor Turnover Model of the 'Natural Rate'
Creators: name: Hoon, Hian Teck
name: Phelps, Edmund S.
Publisher: name: Columbia University
Year: 1996
Subjects: Economics
Labor economics

description: This paper studies two kind of wage subsidy in a model of the natural rate having a continuum of workers ranked by their productivity -- a flat wage subsidy and a graduated wage subsidy, each program financed by a proportional payroll tax. We show that in the model's small open economy version, both subsidy schemes expand employment throughout the distribution; for those whose productivity is sufficiently far below the mean, take home pay is unambiguously up, though the tax financing lowers take home pay at the mean and above. For any particular class of workers paid the same amount of the wage subsidy under the two plans, the graduated plan expands employment more. In the closed economy case, the interest rate is pulled up, and employment is increased for workers whose productivity levels are below or equal the mean. A hiring subsidy is also studied.
Superconductivity in alkali-earth metals doped phenanthrene
Creators: name: Wang, X. F.
name: Yan, Y. J.
name: Gui, Z.
name: Liu, R. H.
name: Ying, J. J.
name: Luo, X. G.
name: Chen, X. H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We discover superconductivity in alkali-earth metals doped phenanthrene. The superconducting critical temperatures \emph{T}$_c$ are 5.6 K and 5.4 K for Sr$_{1.5}$phenanthrene and Ba$_{1.5}$phenanthrene, respectively. The shielding fraction of Ba$_{1.5}$phenanthrene exceeds 65%. The Raman spectra show 8 cm$^{-1}$/electron and 7 cm$^{-1}$/electron downshifts for the mode at 1441 cm$^{-1}$ due to the charge transfer to organic molecules from the dopants of Ba and Sr. Similar behavior has been observed in A$_3$phenanthrene and A$_3$C$_{60}$(A = K and Rb). The positive pressure effect in Sr$_{1.5}$phenanthrene and Ba$_{1.5}$phenanthrene together with the lower $T_c$ with larger lattice indicates unconventional superconductivity in this organic system.
description: 4 pages, 4 figures
Interpreting the Unconventional U.S. Monetary Policy of 2007-09
Creators: name: Reis, Ricardo
Publisher: name: Columbia University
Year: 2010
Subjects: Economics

description: This paper reviews the unconventional U.S. monetary policy responses to the financial and real crises of 2007-09, divided into three groups: interest rate policy, quantitative policy, and credit policy. To interpret interest rate policy, it compares the Federal Reserve's actions with the literature on optimal policy in a liquidity trap. This comparison suggests that policy has been in the direction indicated by theory, but it has not gone far enough. To interpret quantitative policy, the paper reviews the determination of inflation under different policy regimes. The main danger for inflation from current actions is that the Federal Reserve may lose its policy independence; a beneficial side effect of the crisis is that the Friedman rule can be implemented by paying interest on reserves. To interpret credit policy, the paper presents a new model of capital market imperfections with different financial institutions and a role for securitization , leveraging, and mark-to-market accounting. The model suggests that providing credit to traders in securities markets is a more effective response than extending credit to the originators of loans.
Strategic delegation by unobservable incentive contracts
Creators: name: Kockesen, Levent
name: Ok, Efe A.
Publisher: name: Columbia University
Year: 2002
Subjects: Economics

description: Many strategic interactions in the real world take place among delegates empowered to act on behalf of others. Although there may be a multitude of reasons why delegation arises in reality, one intriguing possibility is that it yields a strategic advantage to the delegating party. In the case where only one party has the option to delegate, we analyze the possibility that strategic delegation arises as an equilibrium outcome under completely unobservable incentive contracts within the class of two-person extensive form games. We show that delegation may arise solely due to strategic reasons in quite general economic environments even under unobservable contracts. Furthermore, under some reasonable restrictions on out-of-equilibrium beliefs and actions of the outside party, strategic delegation is shown to be the only equilibrium outcome.
การพัฒนาผลสัมฤทธิ์ทางการเรียนรายวิชาคณิตศาสตร์คอมพิวเตอร์โดยเน้นรูปแบบฝึกปฏิบัติจริง
Creators: name: จารุกิตติ์ สายสิงห์
Publisher: name: Facilty of Education Rajabhat Maha Sarakham University
Year: 2563
Subjects: ผลสัมฤทธิ์ทางการเรียน
ฝึกปฏิบัติจริง
คณิตศาสตร์คอมพิวเตอร์

description: Journal of Education, 17, 3, 129-137
Contributions to Discrete Mathematics, Vol 4, No 1 (2009)
Creators: name: Faculty Of Science, University Of Calgary
Publisher: name: Faculty of Science, University of Calgary
Year: 2009

description: The search for N-e.c. graphs
Results on permutations with distinct difference property
A local characterization of combinatorial multihedrality in tilings
Geometric realizations of special toroidal complexes
{-1,2}-hypomorphy and hereditary hypomorphy coincide for posets
Classifying real Lehmer triples: a revived computation
Weakly partitive families on infinite sets
Computing holes in semi-groups and its applications to transportation problems
Strategic militarization, deterrence and wars
Creators: name: Jackson, Matthew O.
name: Morelli, Massimo
Publisher: name: Columbia University
Year: 2007
Subjects: subject: Political science
subject: FOS: Political science
subject: Peace

description: We study countries choosing armament levels and then whether or not to go to war. We show that if the costs of war are not overly high or low, then all equilibria must involve "dove," "hawk," and "deterrent" strategies and the probability of war is positive (but less than one) in any given period. Wars are between countries with differing armament levels and the frequency of wars is tempered by the presence of armament levels that are expressly chosen for their deterrent properties. As the probability of winning a war becomes more reactive to increased armament, the frequency of wars decreases. Finally, as it becomes increasingly possible to negotiate a credible settlement, the probability of peace increases, but the variance of armament levels increases and war becomes increasingly likely when negotiation is not available. This matches observed patterns in the data over time.
Effect of Papaya Juice, Stabilizer and Storage Duration on Physical, Microbiological and Acceptability of Yoghurt
Creators: name: Tefera, Tilahun
name: Bussa, Negussie
name: Abera, Solomon
name: Bultosa, Geremew
Publisher: name: Journal of Science and Sustainable Development
Year: 2016

description: This study was carried out to improve the physicochemical, nutritional and functional value of cow’s milk yoghurt by the addition of papaya (Carica papaya) juice and gelatine at different levels. Yoghurt samples with added fruit juice were compared with the control (without fruit juice) for physical, chemical and sensory attributes. The physico-chemical properties of the papaya- fruit yoghurt were significantly different (p < 0.05) from the control. Control yoghurt sample showed significantly higher values for pH and lowest for lactic acid bacterial (LAB) count as compared to papaya juice added yoghurt samples. The addition of papaya juice significantly increased (p < 0.05) the total solids, protein, ash, total carotene and phenolics contents of yoghurt samples. There was no significant difference (p > 0.05) in the fat, carbohydrate, energy and total soluble solid contents. Sensory evaluations using a hedonic test showed that all yoghurt samples were acceptable. Overall, the syneresis of the yoghurt samples increased with decreasing pH throughout storage at 4 °C.
description: Journal of Science and Sustainable Development, Vol. 4 No. 2 (2016)
Globalization and the European economy: Medieval origins to the Industrial Revolution
Creators: name: Findlay, Ronald E.
Publisher: name: Columbia University
Year: 2002
Subjects: Economic history
Middle Ages
History

description: Any consideration of "The Europeanization of the Globe and the Globalization of Europe" must confront the problem of how to specify the spatio-temporal coordinates of the concept of Europe. When does "Europe" begin as a meaningful cultural, social and political expression and how far east from the shores of the Atlantic and the North Sea does it extend? In this paper I will begin with Charlemagne, which is to say around 800. It is at about this time that that the designations of Europe and European first begin to be used. Denys Hay (1966:25) cites an eighth-century Spanish chronicler who refers to the forces of Charles Martel, Charlemagne's grandfather, at the celebrated Battle of Poitiers in 732 as Europeenses or Europeans, rather than as Christians, and their opponents as Arabs, rather than as Muslims, a nice example of ethnic as opposed to religious identification of "ourselves" and "the other." In terms of space I will go not too much further east than the limits of the Carolingian Empire at its peak, which is conveniently depicted in the map provided by Jacques Boussard (1976:40-41). In this map it is remarkable to see how closely the empire coincides with the area covered by the "Inner Six" of the European Common Market, with the addition of Austria and Hungary. To the west the Iberian Peninsula was largely under Muslim control, with the British Isles under the Anglo-Saxon kingdoms and their "Celtic Fringe". Scandinavia in the north was still pagan as was Germany east of the Elbe, while southern Italy was largely under Byzantine or Muslim rule. Thus for the purposes of this paper I shall take "Europe" to be the sum of all these territories i.e. what is conventionally regarded today as Western Europe. This is purely for analytical convenience and should not be taken to imply any sinister desire to exclude peoples and nations further to the east on historical and cultural grounds from belonging to Europe. The paper will concentrate on Europe's contacts and trading relations with other parts of the world and their reciprocal impacts upon each other, in keeping with the themes of "Europeanization" and "Globalization". As the reader of this volume will note I will be using the latter term much more broadly and loosely, in the spirit of Humpty Dumpty, than David Sylvan would like us to do in his contribution. Concentrating on the external relations of this entity "Europe" with other economic and cultural units does not imply that I regard purely internal developments as necessarily any less significant in the overall evolution of the European economy.
Extraction Of Noise Parameters For Single-Ended Components Inside A Differential Circuit Using Single-Ended Equipment
Creators: name: Huang, Yuxiang
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: LNA
subject: noise parameters
subject: Engineering--Electronics and Electrical

description: This thesis proposes an approach of investigating electrical and noise parameters of subcomponents inside a fully differential system. To find the single-ended noise parameters, two sets of single-ended noise-parameter measurements and one set of S-parameter measurement are performed. A proof-of-concept PCBs is designed, fabricated, and tested after the algorithms are verified using Matlab. The circuit is designed to have a bandwidth from 500 MHz to 1.5 GHz and be unconditionally stable at all frequencies. The designed circuit has the gain of 9.4 dB at 500 MHz and 9.5 dB at 1.5 GHz in schematic simulations, while in measurements, it has the gain of 8.1 dB at 500 MHz and 4.3 dB at 1.5 GHz. The minimum noise figure is 2.4 dB at 500 MHz and 2.4 dB at 1.5 GHz in simulations, while in measurements, it is 3.1 dB at 500 MHz and 3.2 dB at 1.5 GHz. This thesis presents schematic and measurement results for the electrical and noise parameters. The measurement results are analyzed in Matlab and compared with the relevant single-ended measurement results to verify the operation of the method.
Virial Sequences for Thick Discs and Haloes: Flattening and Global Anisotropy
Creators: name: Agnello, A.
name: Evans, N. W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The virial theorem prescribes the ratio of the globally-averaged equatorial to vertical velocity dispersion of a tracer population in spherical and flattened dark haloes. This gives sequences of physical models in the plane of global anisotropy and flattening. The tracer may have any density, though there are particularly simple results for power-laws and exponentials. We prove the flattening theorem: for a spheroidally stratified tracer density with axis ratio q in a dark density potential with axis ratio g, the ratio of globally averaged equatorial to vertical velocity dispersion depends only on q/g. As the stellar halo density and velocity dispersion of the Milky Way are accessible to observations, this provides a new method for measuring the flattening of the dark matter. If the kinematics of the local halo subdwarfs are representative, then the Milky Way's dark halo is oblate with a flattening in the potential of g ~ 0.85, corresponding to a flattening in the dark matter density of ~ 0.7. The fractional pressure excess for power-law populations is roughly proportional to both the ellipticity and the fall-off exponent. Given the same pressure excess, if the density profile of one stellar population declines more quickly than that of another, then it must be rounder. This implies that the dual halo structure claimed by Carollo et al. (2007) for the Galaxy, a flatter inner halo and a rounder outer halo, is inconsistent with the virial theorem. For the thick disc, we provide formulae for the virial sequences of double-exponential discs in logarithmic and Navarro-Frenk-White (NFW) haloes. There are good matches to the observational data on the flattening and anisotropy of the thick disc if the thin disc is exponential with a short scalelength ~ 2.6 kpc and normalisation of 56 solar masses per square parsec, together with a logarithmic dark halo.
description: MNRAS, submitted, 13 pages, 7 figures, small changes to made to correspond to final accepted version
Contributions to Discrete Mathematics, Vol 4, No 2 (2009)
Creators: name: Faculty Of Science, University Of Calgary
Publisher: name: Faculty of Science, University of Calgary
Year: 2009

description: The sum-product phenomenon in arbitrary rings
Fractional illumination of convex bodies
Another short proof of the Joni-Rota-Godsil integral formula for counting bipartite matchings
The distribution of polynomials over finite fields, with applications to the Gowers norms
On the Hall-Janko graph with 100 vertices and the near-octagon of order (2,4)
Female Labor Market Conditions and Family Formation
Creators: name: Kondo, Ayako
Publisher: name: Columbia University
Year: 2008
Subjects: Economics

description: Slack labor market conditions for women relative to men increase marriage rates for young women. One concern is that this increase may be from marginal marriages due to some females lowering their reservation match quality, and so lead to future divorces and possibly to increases in female headship and poverty. This paper examines the long-term consequences of such marriages using data from the Survey of Income and Program Participation and the Panel Study of Income Dynamics. I find that the marriages induced by relatively poor economic conditions for women reflect shifts in the timing of marriage among young women who would eventually marry anyway. Labor market conditions at age 18-20 do not affect the fraction of women who will marry by age 30. Further, labor market conditions at marriage are uncorrelated with the probability of divorce or with spouses' characteristics, and marrying young in response to labor market shocks does not significantly affect a woman's fertility or labor supply. These findings are consistent with a model in which economic conditions affect women's search intensity without affecting their reservation match quality.
Inspiring Change: A Hermeneutic Phenomenology Exploring the Lived Experience with Emotional Labor by Female Health Champions Implementing Comprehensive School Health Reforms
Creators: name: Kendrick, Astrid Helene
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: Health Champions
subject: Emotional labor
subject: Comprehensive School Health
subject: Hermeneutic phenomenology
subject: School leadership
subject: Complex adaptive systems
subject: Education
subject: Education--Administration
subject: Education--Health

description: This hermeneutic phenomenological study explored the lived experience with emotional labor of five female Health Champions as they navigated through flux and systemic instability while implementing Comprehensive School Health initiatives. Framed by complex adaptive systems theory, the purpose of this study was to discover the immediate emotional and embodied experiences identified by five change agents having horizontal differentiation of roles including: pre-service student teacher, educational assistant, teacher, school leader, and system leader while undertaking educational reforms introduced between 2009 and 2016 in Alberta, Canada. This study uncovered insights into their common understanding the phenomenon of emotional labor while implementing the Comprehensive School Health framework, a reform to Physical and Health Education that coincided with the Inspiring Education movement. The findings of this study include: insight into the unique nature of the emotional work of change agents in educational settings; a phenomenological example of a possible lived experience with emotional labor; and suggestions for areas of future study for educational leaders interested in implementing Comprehensive School Health initiatives.
Nonlinear pricing with self-control preferences
Creators: name: Esteban, Susanna
name: Miyagawa, Eiichi
name: Shum, Matthew
Publisher: name: Columbia University
Year: 2003
Subjects: Commerce

description: This paper studies optimal nonlinear pricing for a monopolist when consumers' preferences exhibit temptation and self-control as in Gul and Pesendorfer (2001a). Consumers are subject to temptation inside the store but exercise self-control, and those foreseeing large self-control costs do not enter the store. Consumers differ in their preferences under temptation. When all consumers are tempted by more expensive, higher quality choices, the optimal menu is a singleton, which saves consumers from self-control and extracts consumers' commitment surplus. When some consumers are tempted by cheaper, lower quality choices, the optimal menu may contain a continuum of choices.
วิจัยเชิงปฏิบัติการเพื่อพัฒนาความสามารถด้านการพูดของนักเรียนอาชีวศึกษาโดยใช้กิจกรรมภาษาเพื่อการสื่อสาร
Creators: name: ภิมลวรรณ สุพรรณ
Publisher: name: Facilty of Education Rajabhat Maha Sarakham University
Year: 2563
Subjects: วิจัยเชิงปฏิบัติการ
ความสามารถด้านพูด
กิจกรรมภาษาเพื่อการสื่อสาร

description: Journal of Education, 17, 3, 139-152
Exploring the linkages between Open Skies agreements signed by the United States and international trade development
Creators: name: Kei, Wendy Wai Yee
Publisher: name: University of British Columbia
Year: 2011

description: This paper uses panel regression techniques and trade gravity models to explore the linkages between Open Skies agreement (OSA) signed by the United States and recent bilateral trade development. US bilateral trade in services data is not available; thus only US merchandise trade by air data is used as dependent variable in this paper’s econometric analysis. US merchandise trade by air series has not experienced significant growth since the implementation of numerous Open Skies agreements in 2007. Few studies have analyzed the relationship between OSAs and trade. These provide the motivation for exploring if signing more Open Skies agreements continues to benefit recent US merchandise trade by air development, and if the performance of these policies depends on other macroeconomic factors and on the properties of the agreement itself. Using data between years 2004 and 2009, panel regression models suggest that the performance of Open Skies agreements are not robust to market volatilities. Reductions in air cargo costs and expansions of air markets resulting from OSAs are not strong enough to combat trade declines when the recession hits. On the other hand, free trade agreements exert large, positive influences to US trade by air even during times of economic slowdown. Yet, the duration of the Open Skies agreements and the economic power of the trading partners do influence the performance of these policies. The preferred model specifications are different for exports and imports by air data, which confirms that the performance of OSAs on exports is different from that on imports. Finally, model results indicate that the impact of Open Skies policies on passenger traffic flows indirectly improves US trade by air figures. OSAs have stimulated passenger traffic growth, and model results suggest that lagged passenger traffic is positively related to trade value. Increased business travel opportunities conducted prior to the delivery of the goods help lower information asymmetries and develop trust among the supply chain partners. Combination of these effects aids expansion of trade by air, as well as trade by other modes of transportation.
An Economic Evaluation of the Syncope: Pacing or Recording in the Later Years (SPRITELY) Trial
Creators: name: Hofmeister, Mark Ronald
Publisher: name: Cumming School of Medicine
Year: 2018
Subjects: subject: Health Economics
subject: Bifascicular block
subject: Syncope
subject: Pacemaker
subject: Implantable loop recorder
subject: Health Sciences

description: The Syncope: Pacing or Recording In ThE Later Years (SPRITELY) trial tests the hypothesis that pacemaker insertion in patients with syncope, bifascicular block, and age greater than 50 years prevents syncope recurrences and major clinical events more effectively than therapy guided by monitoring with an implantable loop recorder. Equipoise or uncertainty reflected in guidelines and recommendations for both strategies may contribute to variation in management and inefficient resource use. Clinical analysis of the SPRITELY trial is complemented with an economic evaluation. The goal of this thesis was to establish the relative cost-effectiveness of the implantable loop recorder and the pacemaker in patients with bifascicular block, unexplained syncope, and age greater than 50 years. An economic evaluation of the SPRITELY trial was conducted to match the prespecified time horizon of two years for the clinical analysis (Chapter 3), and a decision analytic model was built to extend the time horizon to three years to match clinical practice (Chapter 4). In Chapter 5, the effect of taking three different national perspectives for the SPRITELY trial evaluation was explored. This thesis ends with a discussion and conclusions in Chapter 6.
Tax bases, tax rates and the elasticity of reported income
Creators: name: Kopczuk, Wojciech
Publisher: name: Columbia University
Year: 2004
Subjects: Economics

description: Tax reforms usually change both tax rates and tax bases. Using a panel of income tax returns spanning the two major U.S. tax reforms of the 1980s and a number of smaller tax law changes, I find that the elasticity of income reported on personal income tax returns depends on the available deductions. This highlights that this key behavioral elasticity is not an immutable parameter but rather that it can be to some extent controlled by policy makers. One implication is that base broadening reduces the marginal efficiency cost of taxation. The results are very similar for all income categories indicating that the rich are more responsive to tax rates because tax rules that apply to them are different (their tax base is narrower). The point estimates indicate that the Tax Reform Act of 1986 reduced the marginal cost of collecting a dollar of tax revenue by 2 cents, with roughly half of this reduction due to the base broadening and the other half due to the tax rate reduction. As a by-product, the analysis in this paper offers a reconciliation of disparate estimates obtained by previous studies of the tax responsiveness of income.
Liquidambarines A − C, three new abietane diterpenoids from Liquidambar formosana Hance and their anti-inflammatory activities
Creators: name: Li, Hui-Qin
name: Yang, Bao-Chen
name: Sura, Madhu Babu
name: Cheng, Yong-Xian
name: Wang, Feng
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified

description: Liquidambarines A − C (1−3), three new abietane-type diterpenoids, together with five known compounds (4−8) were isolated from the resin of Liquidambar formosana Hance. Their structures were elucidated by the combination of spectroscopic and computational methods. We explored their anti-inflammatory potential by analyzing the protein expression of iNOS and COX-2. Compounds 1 and 3 exhibit significant anti-inflammatory activities without cytotoxicity. These experimental studies suggest these new abietane-type diterpenoids have the potential to be candidates for inflammation-associated diseases.
Contributions to Discrete Mathematics, Vol 5, No 1 (2010)
Creators: name: Faculty Of Science, University Of Calgary
Publisher: name: Faculty of Science, University of Calgary
Year: 2010

description: Injective and non-injective realizations with symmetry
Unavoidable arrays
A characterization of the base-matroids of a graphic matroid
On the number of  components of a graph
On a theorem of G. D. Chakerian
Deletion constructions of symmetric 4-configurations. Part I.
On the universal rigidity of generic bar frameworks
The structure of the magnetic reconnection exhaust boundary
Creators: name: Liu, Yi-Hsin
name: Drake, J. F.
name: Swisdak, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The structure of shocks that form at the exhaust boundaries during collisionless reconnection of anti-parallel fields is studied using particle-in-cell (PIC) simulations and modeling based on the anisotropic magnetohydrodynamic equations. Large-scale PIC simulations of reconnection and companion Riemann simulations of shock development demonstrate that the pressure anisotropy produced by counterstreaming ions within the exhaust prevents the development of classical Petschek switch-off-slow shocks (SSS). The shock structure that does develop is controlled by the firehose stability parameter epsilon=1-mu_0(P_parallel-P_perpendicular)/ B^2 through its influence on the speed order of the intermediate and slow waves. Here P_parallel and P_perpendicular are the pressure parallel and perpendicular to the local magnetic field. The exhaust boundary is made up of a series of two shocks and a rotational wave. The first shock takes epsilon from unity upstream to a plateau of 0.25 downstream. The condition epsilon =0.25 is special because at this value the speeds of nonlinear slow and intermediate waves are degenerate. The second slow shock leaves epsilon=0.25 unchanged but further reduces the amplitude of the reconnecting magnetic field. Finally, in the core of the exhaust epsilon drops further and the transition is completed by a rotation of the reconnecting field into the out-of-plane direction. The acceleration of the exhaust takes place across the two slow shocks but not during the final rotation. The result is that the outflow speed falls below that expected from the Walen condition based on the asymptotic magnetic field. A simple analytic expression is given for the critical value of epsilon within the exhaust below which SSSs no longer bound the reconnection outflow.
description: 13 pages, 5 figures
Dendrocoris parapini Nelson 1957
Creators: name: Thomas, D. B. Jr.
name: H. Brailovsky
Publisher: name: Zenodo
Year: 1999
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Dendrocoris
Dendrocoris parapini

description: Dendrocoris parapini Nelson 1957
(Fig. 2)
Diagnosis. Vertex of head tumid. Dorsal color tan to reddish brown with dark punctations near margins of head and pronotum. Cicatrices concolorous with disk of pronotum. Head elongated (Fig. 2); juga contiguous before tylus or nearly so. Anterolateral pronotal margins weakly concave in dorsal view, margin thick. Humeri not produced. Legs immaculate. Ventation of hemelytra simple or furcate, not reticulate. Abdominal tubercle small; present in both sexes. Male pygophore without teeth on posterior aspect attending medial emargination.
Distribution. USA: Texas, New Mexico. Remarks. The elongate head with dark punctations along the margin is diagnostic. The senior author has collected this species in Texas on pinyon pine, Pinus cembroides Zuccarini.
description: Published as part of Thomas, D. B. Jr. & H. Brailovsky, 1999, Review of the genus Dendrocoris Bergroth with descriptions of new species (Pentatomidae: Heteroptera), pp. 1-9 in Insecta Mundi 13 on page 3
Testing ASPECTS Reliability Using Color Coded Algorithm Enhanced Gray- White Matter Non Contrast CT
Creators: name: Hafeez, Moiz
Publisher: name: Cumming School of Medicine
Year: 2018
Subjects: subject: Stroke
subject: Imaging
subject: NCCT
subject: ASPECTS
subject: Neurology
subject: Neuroscience
subject: Radiology

description: The Alberta Stroke Program Early CT Score (ASPECTS) is widely used to assess and diagnose Acute Ischemic Stroke Patients (AIS). Inter-rater reliability for ASPECTS however, is very poor even amongst physicians with extensive expertise. Much of this limitation has to do with the lack of agreement amongst physicians in identifying Early Ischemic Changes (EIC) on Non- Contrast Computed Tomography (NCCT) scans. This lack of agreement is due to the extremely subtle findings that the human eye is exposed to on gray scale NCCT scans during the acute period of ischemia. We therefore sought to use post processing algorithms to develop Color- Coded Algorithm Enhanced Gray- White Matter (AEGWM) NCCT scans. Increased differentiation between Gray- White matter on AEGWM NCCT scans was developed to act as a powerful imaging tool allowing for better delineation of EIC for AIS patients. In this thesis I investigated the utility of AEGWM NCCT scans for the purposes of detecting EIC in AIS patients. Overall, we found that AEGWM scans performed better as opposed to gray scale NCCT scans when using DWI as ground truth. In addition, inter rater agreement increased consistently across raters of all levels of expertise while using AEGWM scans. Although with some limitations, the use of AEGWM scans may be a promising research direction to pursue for future work.