The longevity of Slovenian Holstein population was analysed using survival analysis with a Weibull proportional hazard model. Data spanned the period between January 1991 and January 2010 for 116,200 ...cows from 3,891 herds. Longevity was described as the length of productive life - from first calving till culling or censoring. Records above the sixth lactation were censored to partially avoid preferential treatment. Statistical model included the effect of age at first calving, stage of lactation within parity, yearly herd size deviation, season defined as year, herd, and sire-maternal grandsire (mgs). Some effects had time varying covariates, which lead to 1,839,307 or on average 16 elementary records per cow. Herd and sire-maternal grandsire effects were modelled hierarchically. Pedigree for sires and maternal grandsires included 2,284 entries. Estimated variance between herds was 0.12, while between sire variance was 0.04. Heritability was evaluated at 0.14. Genetic trend for sires was unfavourable, but not significant. A further research is needed to define the required number of daughters per sire and the dynamics of genetic evaluation for sires whose majority of daughters still have censored records.
Za analizo dolgoživosti smo pri slovenski črno-beli populaciji govedi uporabili metodologijo analize preživetja in Weibullov model sorazmernih ogroženosti. V analizo smo vključili podatke 116.200 krav iz 3.891 čred skozi obdobje od januarja 1991 do januarja 2010. Dolgoživost je bila predstavljena kot doba produktivnega življenja, ki je definirana kot število od prve telitve do izločitve ali do datuma zajema podatkov za živali, ki so na ta datum bile še žive. Šesto in kasnejše laktacije smo okrnili na konec šeste laktacije, da smo omilili precenjenost boljših živali. V statistični model smo vključili vpliv starosti ob prvi telitvi, stadija laktacije ločeno za vsako zaporedno laktacijo, spreminjanje velikosti črede med leti, leto telitve, čredo, očeta in materinega očeta. Ravni nekaterih vplivov so časovno spremenljivi, kar povzroči, da smo v analizi obravnavali 1.839.307 zapisov ali povprečno 16 osnovnih zapisov na kravo. Čreda in vpliv očeta z materinim očetom sta bila v model vključena hierarhično. Rodovnik za očete in materine očete je obsegal 2.284 zapisov. Ocenjena varianca za vpliv črede je znašala 0,12, medtem ko je ocena variance med očeti znašala 0,04. Dednostni delež je bil ocenjen na 0,14. Genetski trend ima negativno smer, a ni statistično značilen. Potrebne bodo nadaljnje raziskave, da bomo določili zadostno število hčera po biku in dinamiko obračunov plemenskih vrednosti za bike, ki imajo večino hčera še v fazi prireje.
In this work we present an ellipsoid cavity regime for the production of a bunch of quasi-monoenergetic electrons. The electron output beam is more effective than the periodic plasma wave method or ...the plasma-channel-guided method. A hyperbola, parabola or ellipsoid path is described for the electron trajectory motion in this model. A dense bunch of relativistic electrons with a quasi-monoenergetic spectrum is self-generated here. The obtained results show a smaller width for the electron energy spectrum in comparison with the previous results. We found that there are optimum conditions to form the ellipsoid cavity. Laser beam properties (such as the spot size, power and pulse duration) and plasma features can control the ellipsoid cavity formation. The optimum conditions for effective electron beam production can be determined from these results.
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Dostopno za:
BFBNIB, DOBA, GIS, IJS, IZUM, KILJ, KISLJ, NUK, PILJ, PNG, SAZU, UILJ, UKNU, UL, UM, UPUK
Global 360, Inc. is a leading provider of Business Process Management and Optimization solutions for Global 2000 organizations. With over two decades of experience, Global 360 provides organizations ...with a competitive edge by automating, measuring and improving resource-intensive business processes across different communities, including customers, employees and partners. Building on our strength in financial services, government and insurance, Global 360 empowers sites for more than 2,000 customers in 134 countries.
DALLAS, Nov. 7 /PRNewswire/ -- Global 360, a leading provider of business process management (BPM) and optimization solutions, will be at the upcoming DCI BPM Conference in San Diego showcasing the ...Global 360 BPM Suite, which is focused on helping organizations master business processes while maintaining a competitive advantage. Global 360 will provide a demonstration of its recently launched business optimization server (BOS) and will be available to answer questions about how any organization can optimize its business processes and benefit from implementing Global 360's technology.
Global 360 will be providing the demonstration of its BPM and optimization solutions in booth P4 on the exhibit floor of the conference. On November 2nd, from 2:45-3:30 pm, Baris Sahin, Project ...Technical Professional for Global 360 customer Kansas City Power and Light, will discuss the importance of an adaptable BPM system in his presentation titled "BPM: Driving Enterprise Agility." Further highlighting the benefits of BPM, Tony Pasma, Director of Solutions Consulting for Global 360, will share his expert views on how any organization can optimize its business processes and benefit from implementing BPM technology during a panel discussion titled "BPM Thought Leaders-What's Ahead." Pasma will join other industry leaders to discuss the future of business process management, from both a business and a technology perspective.
DALLAS, Sept. 21 /PRNewswire/ -- Global 360, a leading provider of business process management (BPM) and optimization solutions, is pleased to announce that Tony Pasma has been invited to the ...BrainStorm BPM conference to share expert views on how any organization can optimize its business processes and benefit from implementing BPM technology. Tony Pasma, Director of Solutions Consulting for Global 360, will be speaking on two different panels, sharing expert thought leadership during the conference.
The discussion is geared toward information and technology professionals who are challenged with making an organization's processes work better through technological enhancements. It will deal with ...technology and tool support for the entire BPM lifecycle from strategy through implementation and improvement. It will expose BPM modeling options, the secrets behind a service-oriented framework, workflow realities, the maturing BPM system technology solutions, process performance management and automated activity monitoring practicalities. It will examine the potential of optimization tools and their application to design and operational improvement scenarios.
Global 360, Inc. is a leading provider of Business Process Management and Analysis solutions for Global 2000 organizations. With over two decades of experience, Global 360 provides organizations with ...a competitive edge by automating, measuring and improving resource-intensive business processes across different communities, including customers, employees and partners. Building on our strength in financial services, government and insurance, Global 360 empowers sites for more than 2,000 customers in 134 countries. Global 360, Inc. is headquartered in Texas with operations in North America, Europe, and the Pacific Rim.
An integrated modelling framework (IMF) has been
developed and applied to analyse climate change impacts
and the effectiveness of adaptation measures in
Austrian agriculture. The IMF couples the crop ...rotation
model CropRota, the bio-physical process model
EPIC and the bottom-up economic land use model
PASMA at regional level (NUTS-3) considering agrienvironmental
indicators. Four contrasting regional
climate model (RCM) simulations represent climate
change until 2050. The RCM simulations are applied
to a baseline and three adaptation and policy scenarios.
Climate change increases crop productivity on national
average in the IMF. Changes in average gross
margins at national level range from 0% to +5% between
the baseline and the three adaptation and policy
scenarios. The impacts at NUTS-3 level range from
-5% to +7% between the baseline and the three adaptation
and policy scenarios. Adaptation measures
such as planting of winter cover crops, reduced tillage
and irrigation are effective in reducing yield losses,
increasing revenues, or in improving environmental
states under climate change. Future research should
account for extreme weather events in order to analyse
whether average productivity gains at the aggregated
level suffice to cover costs from expected higher
climate variability. Anhand eines integrativen Modellverbundes werden
die Auswirkungen des Klimawandels auf die österreichische
Landwirtschaft und die Effektivität von
Anpassungsmaßnahmen untersucht. Grundlage der
Szenarienanalyse sind vier kontrastierende regionale
Klimasimulationen, angewandt auf ein Baselineszenario
und drei Anpassungs- und Politikszenarien
bis 2050. Der integrative Modellverbund koppelt das
Fruchtfolgemodell CropRota, das bio-physikalische
Prozessmodell EPIC mit dem ökonomischen Landnutzungsmodell
PASMA, berücksichtigt Agrarumweltindikatoren
und wird auf NUTS-3-Ebene angewandt.
Die Klimasimulationen lassen im nationalen Durchschnitt
auf Produktivitätssteigerungen in der Pflanzenproduktion
schließen. Im Vergleich zur Baseline
steigen die durchschnittlichen nationalen Deckungsbeiträge
je nach Klimasimulation und Anpassungsund
Politikszenario um 0% bis +5%. Auf NUTS-
3-Ebene ergibt sich aufgrund standörtlicher Unterschiede
(z.B. Klimawandel, Landnutzung, naturräumliche
Gegebenheiten) ein differenzierteres Bild mit
Änderungen zwischen -5% und +7%. Der Zwischenfruchtanbau,
die reduzierte Bodenbearbeitung und
die Bewässerung sind effektive Anpassungsmaßnahmen,
die zur Verringerung von Ertragseinbußen,
Steigerungen von Erlösen oder zur Verbesserung
der Umweltsituation beitragen. Weiterführende Forschungsarbeiten
sollten vermehrt auf die Auswirkungen
von Extremereignissen in der Landwirtschaft
eingehen und klären, ob die durchschnittlichen Produktivitätssteigerungen
ausreichen, die Kosten einer
erwarteten höheren Wettervariabilität zu kompensieren.
V raziskavi smo uporabili podatke o 643 357 meritvah dnevnih meritev za količino mleka in vsebnosti beljakovin ter maščob pri 29 150 kravah slovenske črno bele pasme. V datoteko sorodstva smo dodali ...še 12 173 živali. Meritve so bile opravljene od marca 1986 do julija 1998. Model je vključeval sezono telitve, starost ob telitvi in stadij laktacije kot sistematske vplive ter naključne vplive črede, stalnega okolja in živali. Vpliv črede je pojasnil skoraj četrtino celotne variabilnosti za količino mleka in malo manj kot desetino za obe lastnosti vsebnosti. Delež variance za vpliv čreda je za količino mleka 0,23, za vsebnost maščobe 0,06 in za vsebnost beljakovin 0,09. Podoben vpliv ima za vse tri lastnosti stalno okolje, saj delež variance znaša za količino mleka 0,23, za vsebnost maščobe 0,07 in za vsebnost beljakovin 0,11. Dednostni delež za količino mleka je 0,20, za vsebnost maščobe 0,22 in za vsebnost beljakovin 0,25. Z uporabo tega modela v praksi bi že mlajšim živalim z manjšim številom meritev ali celo brez njih napovedali plemenske vrednosti. S tem bi skrajšali generacijski interval. Ob uvedbi tega modela v praksi je primerno preveriti ekonomske teže in proučiti korelacije med opazovanimi lastnostmi.
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