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Economics of early weaning in northern great plains beef cattle production system  [PDF]
John Travis Mulliniks, Richard C. Waterman, Thomas W. Geary
Agricultural Sciences (AS) , 2013, DOI: 10.4236/as.2013.45031
Abstract:

Early removal of the calf from its dam reduces forage needs of the cow-calf enterprise and has been found to improve BW gain and pregnancy rates in the cow herd. However, early weaning may not always be economically viable for producers and the risk should be considered carefully. This study was conducted to evaluate the effect of early and normal weaning of steer and heifer calves on net income at weaning. Calves from Angus xHereforddams were randomly assigned to one of two weaning treatments. Calves were either early weaned (EW) at 80-d of age or remained with their dams until normal weaning (NW) at 213-d of age. Calves assigned to EW treatment received a 17.5% crude protein and 0.82 Mcal/kg net energy diet for approximately 130-d in a drylot. All economic analyses were conducted at normal weaning for both NW and EW calves. At normal weaning, price of steers ($US/kg) was lower (P = 0.003) and weaned steer value ($US/steer) was greater (P < 0.01) for EW steers; however, no difference (P = 0.18) was found in price of heifers ($US/kg) and weaned heifer value ($US/heifer) between NW and EW heifers. Feed cost was increased (P < 0.001) in EW steers and heifers compared to NW calves. Net revenue for both weaned steers and heifers was reduced (P < 0.001) in EW calves due to the feed cost of the growing diet. This study indicates that early weaning calves at 80-d of age decrease weaned calf value and net revenue for the cow-calf segment.

Heifer Body Weight Gain and Reproductive Achievement in Response to Protein and Energy Supplementation While Grazing Dormant Range Forage  [PDF]
Richard C. Waterman, Jason E. Sawyer, Kim K. Kane, Dean E. Hawkins, Mark K. Petersen
Agricultural Sciences (AS) , 2014, DOI: 10.4236/as.2014.513138
Abstract:
Heifers grazing winter range require supplemental nutrients to complement dormant forage to achieve optimal growth and performance. A study was conducted to evaluate nutritional environment and effect of different supplementation strategies for developing heifers grazing dormant winter range. Eighty-four Angus crossbred heifers were stratified by body weight at weaning, allocated to one of six replicated pastures, and randomly assigned one of three supplemental treatments: 1) 908 g/d of a control supplement providing 340 g·hd-1·d-1 of CP with 130 g of rumen undegradable protein (RUP) and 614 MJ of ME (LRUP); 2) 908 g/d of a RUP supplement providing 340 g·hd-1·d-1 of CP with 170 g of RUP and 567 MJ of ME (HRUP); or 3) 1814 g/d of a protein and energy supplement providing 340 g·hd-1·d-1 of CP with 120 g of RUP + 100 g of propionate salt (NutroCalTM, Kemin Industries, Inc.) and 1222 MJ of ME (LRUP + E). Body weights were taken in November, with monthly 12 h shrunk BW from January thru April, and again in September (at time of pregnancy diagnosis). Heifer average daily gain was similar throughout the developmental period except from d125 to d159 where LRUP + E supplemented heifers had greater gains (P < 0.01) than LRUP and HRUP supplemented heifers (0.33, 0.04, and 0.14 ± 0.05 kg/d, respectively). LRUP + E heifers had a greater percentage (P = 0.04) of heifers pubertal at time of artificial insemination compared to LRUP and HRUP heifers (57, 29, and 30, respectively). However, no differences were detected in overall pregnancy rates (P = 0.40). This study indicated that feeding more supplemental energy (i.e., propionate salt, ground milo and corn) allowed lightweight heifers to achieve a greater rate of gain at a key period during development and achieved comparable reproductive success to heifers only receiving supplemental protein.
Adherence to ocular hypotensive therapy: patient health education needs and views on group education
Waterman H,Brunton L,Fenerty C,Mottershead J
Patient Preference and Adherence , 2013,
Abstract: Heather Waterman,1 Lisa Brunton,1 Cecilia Fenerty,2 Jane Mottershead,2 Cliff Richardson,1 Fiona Spencer21School of Nursing, Midwifery and Social Work, University of Manchester, Manchester, UK; 2Manchester Royal Eye Hospital, Manchester, UKBackground: In this study the authors sought both to understand the health education needs of patients with glaucoma, with particular regard to adherence to glaucoma treatment, and to examine these patients' views of group education.Methods: Using a health promotion approach to health education, 27 qualitative interviews with new and established patients receiving glaucoma treatment were conducted. Health promotion is defined as a way of strengthening people's capacities to control and optimize their own health. The interviews were transcribed and were then analyzed thematically.Results: Nine categories of health education needs were identified from the transcripts: (1) to understand glaucoma; (2) to understand their diagnosis or understand the difficulties in giving a diagnosis; (3) to understand the implications of eye drops, their side effects, and how to renew the eye drops; (4) to feel confident to put in eye drops; (5) to put the condition into perspective – to know how to manage their risk; (6) to be able to ask questions of clinicians; (7) to be able to navigate the health care system; (8) to understand and be able to manage own adherence behavior; and (9) to know where to access other sources of information. The majority of patients had something positive to say about group education, and about half of the patients said they would attend group education if they were offered the opportunity.Conclusion: A health promotion approach identified a wide range of patient-centered health education needs regarding adherence to glaucoma treatment. Group education will be attractive to some patients. Clinicians could use the health education needs identified in this study to guide the development of either individual or group-based educational intervention to improve adherence to glaucoma treatment. However, clinicians need to be aware that when developing a group intervention, attention will need to be given to making the education relevant to the circumstances of each patient.Keywords: glaucoma, patient compliance, treatment compliance, therapy adherence, action research
Kinematic Disturbances in Optical Rotation Curves among 89 Virgo Disk Galaxies
Vera C. Rubin,Andrew H. Waterman,Jeffrey D. P. Kenney
Physics , 1999, DOI: 10.1086/300916
Abstract: For 89 galaxies, mostly spirals, in the Virgo cluster region, we have obtained optical long-slit major axis spectra of the ionized gas. We find: (1) One-half of the Virgo galaxies we observed have regular rotation patterns, while the other 50% exhibit kinematic disturbances ranging from mild to major. Velocity complexities are generally consistent with those resulting from tidal encounters or accretion events. Since kinematic disturbances are expected to fade within ~10^9 years, many Virgo galaxies have experienced several significant kinematic disturbances during their lifetimes. (2) A few Virgo galaxies have ionized gas of limited extent, with velocities exceptionally low for their luminosities. In these galaxies the gas must be not rotationally supported. (3) There is a remarkable difference in the distribution of galaxy systemic velocity for galaxies with Regular rotation curves and galaxies with Disturbed rotation curves. Galaxies with regular rotation patterns show a flat distribution with systemic velocity, while galaxies with disturbed kinematics have a Gaussian distribution very similar to that for the elliptical galaxies in Virgo. This suggests that spirals with disturbed kinematics are preferentially on radial orbits, which bring them to the cluster core, where tidal interactions are strong and/or more common. These interactions may alter the morphology of the galaxy, and may also play a role in driving the Virgo cluster toward dynamical equilibrium.
REVIEW: The City without Castells
Peter Waterman
Kasarinlan : Philippine Journal of Third World Studies , 1989,
Abstract:
Estudos sobre Trabalho Global: A necessidade de uma perspetiva emancipatória études sur le travail global : La nécessité d’une perspective émancipatrice An Emancipatory Global Labour Studies is Necessary!
Peter Waterman
Revista Crítica de Ciências Sociais , 2013, DOI: 10.4000/rccs.4896
Abstract: O presente artigo faz uma avalia o crítica dos chamados “Novos Estudos sobre Trabalho Global” com base nos seus parametros socioliberais, concentrando se em espa os, locais ou aspetos supranacionais ou globais. Advoga a necessidade de uma perspetiva emancipatória nos “Estudos sobre Trabalho Global”, apontando para algumas das fontes teóricas em que se pode basear. Le présent article réalise une évaluation critique des dénommées “Nouvelles études sur le Travail Global” en partant de leurs paramètres socio-libéraux, en se concentrant sur des espaces, locaux ou sur des aspects supranationaux ou globaux. On y défend la nécessité d’une perspective émancipatrice dans les “études sur le Travail Global”, en soulignant quelques-unes des sources théoriques sur lesquelles il peut reposer. This paper critiques the “New Global Labour Studies” for its social liberal parameters, concentrating on the supra national or global level, spaces, sites or aspects thereof. It argues the necessity for an “Emancipatory Global Labour Studies” and suggests some possible theoretical sources of such.
O internacionalismo sindical na era de Seattle The Trade Union Internationalism in the Age of Seattle Le internationalisme syndical à l’ère de Seattle
Peter Waterman
Revista Crítica de Ciências Sociais , 2012, DOI: 10.4000/rccs.1298
Abstract: Reconhecendo a existência de uma profunda crise mundial que atravessa a esfera do trabalho, este texto prop e: uma crítica do internacionalismo sindical do período nacional/industrial/colonial; uma reconceptualiza o do sindicalismo e do internacionalismo operário adequada a um período de capitalismo globalizado/conectado em rede/informatizado; o diálogo do milénio sobre a esfera do trabalho e a globaliza o; uma das novas abordagens académicas da esfera do trabalho a nível internacional e do internacionalismo operário; o papel da comunica o, da cultura e das novas tecnologias da informa o e da comunica o. A conclus o salienta a centralidade da interconectividade reticular, da comunica o e do diálogo para a cria o de um novo internacionalismo operário. Recognising that labour is in profound crisis worldwide, this text proposes a critique of the union internationalism of the national/industrial/colonial era and a reconceptualisation of unionism and labour internationalism appropriate to a globalised/networked/informatised capitalist era. It also discusses the millennial dialogue on labour and globalisation, one of the new academic approaches to international labour/labour internationalism, and the role of communication, culture and the new information and communication technology. The conclusion stresses the centrality of networking, communication and dialogue to the creation of a new labour internationalism. Reconnaissant l’existence d’une profonde crise mondiale qui traverse la sphère du travail, ce texte propose: une critique de l’internationalisme syndical de la période nationale/industrielle/coloniale; une reconceptualisation du syndicalisme et de l’internationalisme ouvrier adéquat à une période du capitalisme globalisé/connecté aux réseaux informatisés; le dialogue du millénaire sur la sphère du travail et la globalisation; l’exposé d’une des nouvelles approches académiques de la sphère du travail au niveau international et de l’internationalisme ouvrier; le r le de la communication, de la culture et des nouvelles technologies de l’information et de la communication. La conclusion met l’accent sur la centralité de l’interconnexion réticulaire, de la communication et du dialogue pour la création d’un nouvel internationalisme ouvrier.
Internet TV: Business Models and Program Content
David Waterman
Computer Science , 2001,
Abstract: Internet technology should eventually provide important improvements over established media not only in the efficiency of broadband delivery, and of particularimportance, in the efficiency of business models that can be used to collect money for that programming. I identify five economic characteristics of Internet technology that should lead to these greater efficiencies: (1) lower delivery costs and reduced capacity constraints, (2) more efficient interactivity, (3) more efficient advertising and sponsorship, (4) more efficient direct pricing and bundling, and (5) lower costs of copying and sharing. The most successful Internet TV business models are likely to involve syndication to or from other media, and also international distribution. In the broader context, Internet TV is another syndication outlet by which program suppliers can segment their overall markets and thus support higher production investments. Many innovative and more sharply focused programs will surely prosper on Internet TV, but the attractiveness to audiences of high production value programming will tend to advantage broad appeal programming, such as Hollywood movies. Historical evidence about the performance of cable television and videocassettes is presented to support these points.
Adherence to ocular hypotensive therapy: patient health education needs and views on group education
Waterman H, Brunton L, Fenerty C, Mottershead J, Richardson C, Spencer F
Patient Preference and Adherence , 2013, DOI: http://dx.doi.org/10.2147/PPA.S37535
Abstract: dherence to ocular hypotensive therapy: patient health education needs and views on group education Original Research (539) Total Article Views Authors: Waterman H, Brunton L, Fenerty C, Mottershead J, Richardson C, Spencer F Published Date January 2013 Volume 2013:7 Pages 55 - 63 DOI: http://dx.doi.org/10.2147/PPA.S37535 Received: 30 August 2012 Accepted: 11 October 2012 Published: 18 January 2013 Heather Waterman,1 Lisa Brunton,1 Cecilia Fenerty,2 Jane Mottershead,2 Cliff Richardson,1 Fiona Spencer2 1School of Nursing, Midwifery and Social Work, University of Manchester, Manchester, UK; 2Manchester Royal Eye Hospital, Manchester, UK Background: In this study the authors sought both to understand the health education needs of patients with glaucoma, with particular regard to adherence to glaucoma treatment, and to examine these patients' views of group education. Methods: Using a health promotion approach to health education, 27 qualitative interviews with new and established patients receiving glaucoma treatment were conducted. Health promotion is defined as a way of strengthening people's capacities to control and optimize their own health. The interviews were transcribed and were then analyzed thematically. Results: Nine categories of health education needs were identified from the transcripts: (1) to understand glaucoma; (2) to understand their diagnosis or understand the difficulties in giving a diagnosis; (3) to understand the implications of eye drops, their side effects, and how to renew the eye drops; (4) to feel confident to put in eye drops; (5) to put the condition into perspective – to know how to manage their risk; (6) to be able to ask questions of clinicians; (7) to be able to navigate the health care system; (8) to understand and be able to manage own adherence behavior; and (9) to know where to access other sources of information. The majority of patients had something positive to say about group education, and about half of the patients said they would attend group education if they were offered the opportunity. Conclusion: A health promotion approach identified a wide range of patient-centered health education needs regarding adherence to glaucoma treatment. Group education will be attractive to some patients. Clinicians could use the health education needs identified in this study to guide the development of either individual or group-based educational intervention to improve adherence to glaucoma treatment. However, clinicians need to be aware that when developing a group intervention, attention will need to be given to making the education relevant to the circumstances of each patient.
Enumeration of linear chord diagrams
J. E. Andersen,R. C. Penner,C. M. Reidys,M. S. Waterman
Mathematics , 2010,
Abstract: A linear chord diagram canonically determines a fatgraph and hence has an associated genus $g$. We compute the natural generating function ${\bf C}_g(z)=\sum_{n\geq 0} {\bf c}_g(n)z^n$ for the number ${\bf c}_g(n)$ of linear chord diagrams of fixed genus $g\geq 1$ with a given number $n\geq 0$ of chords and find the remarkably simple formula ${\bf C}_g(z)=z^{2g}R_g(z) (1-4z)^{{1\over 2}-3g}$, where $R_g(z)$ is a polynomial of degree at most $g-1$ with integral coefficients satisfying $R_g({1\over 4})\neq 0$ and $R_g(0) = {\bf c}_g(2g)\neq 0.$ In particular, ${\bf C}_g(z)$ is algebraic over $\mathbb C(z)$, which generalizes the corresponding classical fact for the generating function ${\bf C}_0(z)$ of the Catalan numbers. As a corollary, we also calculate a related generating function germaine to the enumeration of knotted RNA secondary structures, which is again found to be algebraic.
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