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1
Tomlinson, Andrew Michael. "Terahertz detection and electric field domains in multiple quantum wells." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302363.
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Russell, Jesse. "The Optimal Cow Size for Intermountain Cow-Calf Operations: The Impact of Public Grazing Fees on the Optimal Cow Size." DigitalCommons@USU, 2014. https://digitalcommons.usu.edu/etd/3575.
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The cattle industry is very competitive which is forcing cow-calf producers to strive for efficiency. Research has shown that as a cows mature weight increases, feed efficiency decreases, as well as reproductive efficiency and other production factors. The purpose of this paper is to (1) identify the economically optimum cow size when charging for grazing public lands on a true Animal Unit Equivalent (AUE) basis and (2) determine if the current practice of charging on a per head basis for grazing public lands has an effect on the optimal cow size.
To simplify the complexity of this problem, three different resource bases common in the Intermountain West (resource base 1, time grazing = 100%; resource base 2, time grazing = 75%; and resource base 3 time grazing = 50%) were defined, as well as three different weights of cattle (small, medium and large). Grazing plans were created for each resource base and winter rations were balanced to ensure adequate nutrition and accurate budgeting. Linear programming was used to determine an optimal cow size for each resource base when charging on a per head basis and by a true AUE.
When grazing on public land was charged on a true AUE basis, the small cows generated the highest net returns on all resources. Also, each resource base was able to maintain a larger number of the smaller cows than the medium or large cows under these conditions. When grazing on public lands was charge on a per head basis, as is typical, the large cow generated the greatest net returns on resource base 1 and 2. However, the small cow generated the greatest net return on resource base 3. These findings suggest that the current practice of charging for grazing public land on a per head basis does have an impact on cow size.
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Kajic, Robert. "Processing Functional CQL Queries." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-133869.
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At UDBL (Uppsala DataBase Laboratory) we are developing the DSMS SCSQ (SuperComputer Stream Query processor) based on the main memory DBMS Amos II. Amos II is a functional DBMS where data and information are represented as typed functions. In SCSQ database queries over streams are expressed in the functional query language SCSQL, a language similar to the object oriented parts of SQL:99 but extended with parallel stream query facilities. In this paper we investigate what existing functionality in SCSQ and Amos II can be utilized to support CQL, a continuous query language developed by the Stanford STREAM project. SCSQL is extended with functionality required to support CQL. The extended functional stream query language is called FCQL. To implement FCQL, SCSQ is extended with new operators that adhere to the semantics of CQL. FCQL is a functional continuous query language with the same expressive power as CQL. Furthermore, we show how CQL queries can be translated to FCQL in a systematic way and by doing so give a template for an automatic CQL-to-FCQL translator. We also evaluate the completeness of FCQL by translating to FCQL the queries of the linear road DSMS benchmark as it was expressed in CQL by the Stanford STREAM project.
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Herrell, Justin Lee. "The implementation impact of continuous quality improvement (CQI) on teacher perceptions of CQI categories." Diss., Columbia, Mo. : University of Missouri-Columbia, 2008. http://hdl.handle.net/10355/5611.
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Thesis (Ed. D.)--University of Missouri-Columbia, 2008.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on June 8, 2009) Vita. Includes bibliographical references.
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Pešava, Jan. "Tvorba komponent pro Adobe CQ5." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2014. http://www.nusl.cz/ntk/nusl-224682.
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The goal of the thesis is to analyze and describe a creation of components for system of Adobe CQ5. Resulting components will be subsequently implemented and integrated into the system. The partial goal is to create a thesis that helps other programmers create components for this system.
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Melin, Martin. "Optimising cow traffic in automatic milking systems : with emphasis on feeding patterns, cow welfare and productivity /." Uppsala : Dept. of Animal Nutrition and Management, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/200563.pdf.
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Nguyen, Thanh Phong, and Thi Ngoc Quynh Nguyen. "Composting of cow manure and rice straw with cow urine and its influence on compost quality." Technische Universität Dresden, 2018. https://tud.qucosa.de/id/qucosa%3A32717.
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The aim of this study was to assess the effect of composting process of cow manure and rice straw with application of cow urine and to evaluate the quality of composting products. There were two treatment piles, in which one pile was applied with cow urine every week and another pile without urine application. Each pile was set up by one tone cow manure and 500kg rice straw. The piles were half-covered by plastic foil to protect from rain and turned one a week. The composting duration lasted 8 weeks. The parameters such as temperature, pH, DM, density and nitrogen were monitored and observed during the 8-week period. The results showed that there was a significant difference in temperature, compost quality and duration between two piles with and without cow urine application. The application of cow urine increased significant nitrogen and phosphorous content and shortened the composting process. This study recommends that cow urine should be applied for composting process of cow manure and rice straw in order to increase the quality of compost. The final product was in the range of matured compost level and can be used directly for agriculture crop.<br>Mục tiêu của nghiên cứu nhằm đánh giá ảnh hưởng đến chất lượng phân compost của việc bổ sung nước tiểu vào trong quá trình ủ phân từ nguyên liệu phân bò và rơm rạ. Thí nghiệm được thực hiện trên hai đống ủ phân, một đống ủ được bổ sung nước tiểu bò hàng tuần và một đống ủ không bổ sung nước tiểu bò như là một nghiệm thức đối chứng. Mỗi đống ủ được trộn 1 tấn phân bò và 500kg rơm. Đống ủ phân được đậy kín một nửa phía trên nhằm ngăn cản ảnh hưởng của mưa và được đảo trộn một lần mỗi tuần. Quá trình thí nghiệm được tiến hành trong 8 tuần. Các chỉ tiêu như nhiệt độ, pH, DM, mật độ và chất dinh dưỡng Nitơ và Phốt Pho được quan trắc trong thời gian ủ. Kết quả cho thấy có sự khác biệt đáng kể giữa hai đống phân ủ đối với các chỉ tiêu như nhiệt độ, chất lượng phân compost và thời gian ủ. Đống ủ phân có bổ sung nước tiểu có hàm lượng Nitơ và Phốt pho cao hơn và thời gian ủ ngắn hơn. Kết quả nghiên cứu khuyến cáo nên bổ sung nước tiểu bò cho quá trình ủ phân compost nhằm tăng hàm lượng chất dinh dưỡng cho sản phẩm phân compost. Sản phẩm sau quá trình ủ đạt mức độ phân hữu cơ và có thể sử dụng cho cây trồng.
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Osborne, Vernon Ray. "Water nutrition in the dairy cow." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ58309.pdf.
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Schagerström, Johan. "Cow behaviour monitoring with motion sensor." Thesis, KTH, Maskinkonstruktion (Inst.), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-168742.
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Det är viktigt att övervaka status för mjölkkor från ett djurskydds- och mjölkbondens ekonomiska perspektiv, speciellt för storskaliga lantbruk och automatiska mjölkgårdar. Kobeteende är en indikator på kons välfärd och djurhälsa. I den här rapporten har data samlats in från kor i en mjölkgårdsmiljö och aktivitetsigenkänning har tillämpats för att automatiskt mäta daglig idisslingstid och upptäcka brunst i uppbundna kor. Målet är en produkt som ska uppfylla kraven på noggrannhet, batteritid, robusthet och detaljnivå. Därför har flera systemaspekter beaktats beträffande val av hårdvara, mjukvara och kommunikation.I metoden ingår en två veckors period i en mjölkgård med sensordatainsamling och observation följt av en fem veckors period i ytterligare en mjölkgård med sensordatainsamling och observation med övervakningskamera. Flera algoritmer och signalegenskaper testades för idisslingsövervakning och utvärderas mot varandra med avseende på sensitivitet, specificitet och beräkningsbelastning.Slutsatsen är att de signaler som krävs för att upptäcka idissling är tillgängliga med hjälp av en accelerometer på halsbandet och det är möjligt att nå 96 % sensitivitet och 94 % specificitet med hjälp av dessa sensordata, men de bästa algoritmerna misstänks dra för mycket energi för att klara kravet om 10 års batteritid i en produkt. Det visade sig att en accelerometer på kragen inte gör det möjligt att upptäcka läggningar och ställningar som ett mått på brunst i uppbundna kor. Den externa validiteten behöver testas för detektering av idissling. Nya metoder behöver utforskas för att detektera brunst hos uppbundna kor. Algoritmer borde testas på en den tilltänkta mikrokontrollern så att noggrannare analyser kan göras för batteritid och beräkningskapacitet.<br>It is important to monitor status of dairy cows from an animal welfare and dairy farmer economic point of view, especially for large-scale farming and automatic milking dairies. Cow behavior is an indicator of cow welfare and cow health. In this thesis, data has been gathered from cows in a dairy farm environment and activity recognition has been implemented in order to automatically measure daily rumination time and detect heat in tied-up cows. The goal is a product that must fulfill requirements on accuracy, battery life, robustness and level of detail. Therefore, multiple system aspects have been considered concerning choice of hardware, software and communication.The method included a 2 week period in a dairy farm with sensor data gathering and observation, physically in front of the cows, followed by another 5 week period in another dairy farm with sensor data gathering and observation using surveillance camera. Multiple algorithms and signal features were tested for rumination monitoring and evaluated against each other with respect to sensitivity, specificity and computational load.The conclusion is that the signals required for detecting rumination are available using an accelerometer on the collar and it is possible to reach 96 % sensitivity and 94 % specificity using this sensor data, but the best algorithms are suspected to draw too much energy in order to comply with the requirement of 10 years of battery life in a product. It turned out that an accelerometer on the collar is not feasible for detecting lie-downs and stand-ups as a measure of heat in tied-up cows.The external validity needs to be tested for rumination detection. New methods need to be explored for detecting heat in tied-up cows. Algorithms should be tested on the intended microcontroller so that more thorough analysis can be made with respect to battery life and computational capacity.
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Glowacki, Michal Henryk. "Welding of metals with c.w. lasers." Thesis, University of Essex, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388617.
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Martin, Anthony Joseph. "Group feeding for the lactating cow /." Click here to view, 2009. http://digitalcommons.calpoly.edu/dscisp/22.
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Thesis (B.S.)--California Polytechnic State University, 2009.<br>Project advisor: Ed Jaster. Title from PDF title page; viewed on Jan. 21, 2010. Includes bibliographical references. Also available on microfiche.
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Prescott, Neville. "Dairy cow behaviour and automatic milking." Thesis, University of Bristol, 1995. http://hdl.handle.net/1983/5cd2feb0-5362-4a12-b545-9861f4b7aaf9.
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Voluntary automatic milking is a system whereby dairy cows can be milked as the cow desires without routine human intervention. Motivation to be milked was studied in a Y -maze and an automatic milking system (AMS). In both motivation to be milked was variable. In the Y -maze some early lactation cows chose to be milked every 31/ 2 hours five times per day, but there was much individual variation. Late lactation cows did not choose to be milked less often than the early lactation cows. When given the choice to be milked or fed concentrate in the Y -maze, early lactation cows always chose to eat. In the AMS mean attendance increased from 1.1 visits/ cow / day when they were not fed concentrate to 2.8 visits/cow/day when they were fed concentrate. The effects of feeding in the AMS on attendance were studied. Feeding concentrate in the parlour had no effect on attendance or the number of milkings. The AMS exit area feed type (where the cows had to visit the AMS to reach the food; either forage or concentrate) however, had a significant effect on attendance (forage: 6.0 visits/cow/day, concentrate: 4.1 visits/cow/day, s.e.d=0.25) but only a small effect on the frequency of milkings (forage: 2.6 milkings/cow/day, concentrate: 2.4 milkings/cow/day, s.e.d=0.06). Feeding forage in the exit area, as opposed to freely available in the bedded area, significantly reduced the total forage feeding time (209 vs 289 minutes/cow/day, s.e.d=33.6), and the number of bouts (4.9 vs 7.9 bouts/cow/day). Feeding cows in the parlour increased the level of shuffling during the automatic teat cup attachment process (6.7 vs. 3.4 shuffles/cow/milking, s.e.d 2.07). There were no other behavioural effects or any effects on their milking characterisitcs. Future automatic milking systems could feed concentrate in the exit area as the lure to attract cows into the system. There is no requirement to feed cows while they are being milked.
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Sutter, Sara. "The Sea Cow and The Siren." PDXScholar, 2012. https://pdxscholar.library.pdx.edu/open_access_etds/1346.
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Michalisko, Petr. "Vývoj internetových stránek v Adobe CQ5." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2013. http://www.nusl.cz/ntk/nusl-223964.
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The Master’s thesis contains the theoretical part with the methods and tools that were used for the analysis of the current development of the websites in the company HARTMANN - RICO a.s. Using these methods and tools have been designed new processes associated with the transition from outsourcing on private development websites in the system Adobe CQ5.
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Taylor, Emily. "Use of Corn Co-Products in Beef Cow Diets and Its Effects on Cow and Offspring Performance." Thesis, Purdue University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10607515.
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<p> The effect of feeding corn by-products on cow reproductive performance, as well as offspring growth and reproductive performance has been investigated through four separate studies. The first study was conducted to evaluate the use of dried distiller’s grains with solubles (DDGS) in beef cow diets during early lactation on both dam and heifer offspring growth and reproductive performance. Three diets, consisting of 0, 2.5 or 4.7 kg/d DM of DDGS were formulated to be isocaloric but the DDGS diets exceeded protein requirements. Milk production was not different, however, milk components increased with the addition of DDGS. Resumption of cyclicity of dams, as well as days of age at puberty in heifer offspring were not different. However, while not statistically different, time-artificial insemination (TAI) rates of both cow and heifer offspring were numerically improved with the addition of DDGS in the diet. Plasma urea nitrogen (PUN) concentrations in the cows followed the trend of being higher with increasing levels of DDGS. While PUN concentrations did reach levels that are considered detrimental to fertility, they did not seem to have a negative impact on conception.</p><p> In the second study, the use of corn gluten feed (CGF) in dam diets and its effects on their reproductive performance was investigated. Three diets, consisting of 0, 3.3 or 6.7 kg/d DM of CGF were formulated to be isocaloric but the CGF diets exceeded protein requirements. Milk production and milk components were not different with the exception of fat, which tended to be greater in the high CGF treatment. Resumption of cyclicity and TAI conception rates were not improved when CGF was added to the diet. Plasma urea nitrogen concentrations did not approached what would have been considered detrimental to fertility.</p><p> The third study was conducted to evaluate feeding DDGS during the second trimester or the second and third trimester (3.0 or 3.5 kg/d DDGS, respectively), on heifer offspring reproductive performance. Growth performance of heifer offspring did not differ among treatments. There were no differences in TAI conception rates in heifer offspring from dams fed DDGS but, dominant follicles tended to be larger in heifer offspring from dams fed DDGS during the second trimester. Due to the lack of improvement in reproductive performance in this study, it has been hypothesized that lactation may be a more critical time point for improvements in heifer offspring reproductive performance.</p><p> The fourth study followed the hypothesis of the third study. Because heifer offspring reproductive performance was positively impacted when dams were fed DDGS during early lactation, evaluation of dams fed DDGS during early lactation on bull offspring performance was investigated. Bull offspring growth performance was not impacted by dam diets during early lactation. Scrotal circumference, testosterone concentrations and semen analysis were used to evaluate days of age at puberty, however, puberty attainment in bull offspring was also not impacted. In summary, feeding DDGS as a primary source of dietary energy during early lactation had a positive impact on both cow and heifer offspring reproductive performance, but this does not seem to be true for bull offspring.</p><p>
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Brunet, Nathalie. "Reactions of CpW(NO)(CH₂SiMe₃)₂ with Lewis acids : characteristic chemistry of CpW(NO)(CH₂SiMe₃)(CH₂CPh₃)." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/27835.
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The nitrosyl complex CpW(NO)R₂ (R = CH₂SiMe₃) forms 1:1 adducts via isonitrosyl linkages to Lewis acids such as AlMe₃ and Cp₃Er, i.e. CpWR₂(NO→A) (A = AlMe₃, ErCp₃). These adducts regenerate the starting dialkyl complex when treated with water. Protonation of CpW(NO)R₂ by HBF₄⋅0Me₂ can also be effected. Whether the site of protonation is the nitrogen or the oxygen atom of the nitrosyl ligand is not known with certainty, although O-protonation is postulated by analogy with the other Lewis-acid adducts of CpW(NO)R₂. In these adducts, the nitrosyl stretching frequency is shifted to lower wavenumbers relative to that of the parent dialkyl, to an extent which increases as harder Lewis acids are employed. The colour of the adducts also ranges from red to orange to yellow as progressively harder acids are used.
Treatment of CpW(NO) (CH₂SiMe₃)₂ with [Ph₃C]⁺ PF₆⁻ in Ch₂CL₂ results in electrophilic cleavage of a carbon-silicon bond to yield the mixed dialkyl CpW(NO)(CH₂SiMe₃)(CH₂CPh₃), which has been fully characterized by spectroscopic methods and by a single-crystal X-ray crystallographic study. The formation of Me₃SiF and PF₅ (coordinated to Lewis bases in the reaction mixture) as by-products of this reaction has been confirmed by ³¹P and ¹⁹F NMR spectroscopy of the reaction mixture in CD₂CL₂. Preliminary attempts to extend this novel reaction of a silicon-containing ligand by using other carbocations were unsuccessful. This is attributed to the high reactivity of the required carbocations and the large number of possible reaction sites on the metal complex. Some reactions of the mixed dialkyl CpW(NO)RR¹ (R = CH₂SiMe₃ R¹ = CH₂CPh₃) were found to be analogous to those of the parent CpW(NO)R₂, while other reactions followed a different course because of the ability of the CH₂CPh₃ ligand to orthometallate. Thus, CpW(NO)RR¹ is much less thermally stable than CpW(NO)R₂. As a solid or a solution in non-coordinating solvents, it decomposes in a matter of days at room temperatures to a mixture of products which were not identified. In acetonitrile solution, an orthometallated complex derived from CpW(NO)RR¹ can be trapped by coordination of solvent. The product CpW(NO)(CH₂C(C₆H₄)Ph₂)(NCMe) has been isolated and crystallographically characterized. Cyclic voltammograms of CpW(NO)R₂ and CpW(NO)RR¹ show that both complexes undergo an apparently chemically reversible reduction and an irreversible oxidation. The mixed dialkyl CpW(NO)RR¹ is somewhat easier both to reduce and to oxidize than CpW(NO)R₂.
Like CpW(NO)R₂, CpW(NO)RR¹ reversibly forms a 1:1 adduct with PMe₃.
Also analogously to CpW(NO)R₂, it reacts with 0₂ to form a 5:1 mixture of
dioxoalkyl complexes CpW(0)₂R and CpW(0)₂R¹, and with NO(g) to form 2
CpW(NO)R¹(ƞ² -0₂N₂R). In this product, insertion of NO has occurred
exclusively in the W-CH₂SiMe₃ bond. Upon photolysis, both complexes
CpW(NO)R¹¹(ƞ²-0₂N₂R) (R¹¹ = CH₂SiMe₃ or CH₂CPh₃) form dioxo alkyls CpW(O)₂R¹¹ in an unprecedented reaction.
The ability of CpW(NO)RR¹ to orthometallate also results in the
formation, when this complex is treated with sulphur, of CpW(O)(CH₂C(C₆H₄)Ph₂)-(SR). No analogue to this compound can be obtained from reaction of CpW(NO)R₂ with sulphur. The sequence of reactions leading to the formation of this product is not known.<br>Science, Faculty of<br>Chemistry, Department of<br>Graduate
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Kajic, Robert. "Evaluation of the Stream Query Language CQL." Thesis, Uppsala University, Department of Information Technology, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-129455.
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<p>There are several query languages developed for data stream management systems (DSMS), CQL (Stanford), StreamSQL (StreamBase), WaveScript (MIT), SCSQL (Uppsala University), etc. This thesis is the research phase of a two-phase project where the final goal is to provide CQL support to the Super Computer Stream Query processor (SCSQ); a DSMS developed by the Uppsala DataBase Laboratory. In this paper, the main properties of CQL, the extent to which they are implemented by the Stanford STREAM project and the expressibility of the Linear Road (LR) benchmark using CQL is investigated. An overview and comparison of SQL, CQL, StreamSQL and WaveScript is also given.</p>
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Aissa, Khaled Omer Salem. "Recycling of Construction and Demolition Wastes (CDW)." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
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Due to urban expansion and what it results as construction and demolition waste specially in the big cities we had to deal with this wastes and put it in the right process to take advantage of them once again as a row materials.
This study aim to clarify the recycling methods of the construction and demolition wastes and also discuss the environmental and economic influence by presenting several studies in different countries shows the quantities of their wastes and its recycled percentage. As well as we discussed the challenges that can be faced during the waste recycling process
specially if that was done in a densely settled cities where necessary to take into account the possible problems that can happen within the demolition stage and during the transportation of the wastes from the demolition site to the treatment facility. Also it has been explained which is the perfect paths that can be followed to gain the highest recycled percentage and how it is possible to have the maximum benefit of the materials produced from that process.
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Sprinkle, J. E. "Matching Forage Resources with Cow Herd Supplementation." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 1996. http://hdl.handle.net/10150/144718.
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Sprinkle, Jim E. "Matching Forage Resources with Cow Herd Supplementation." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2011. http://hdl.handle.net/10150/239572.
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Laird, Mhairi. "Angiogenesis during luteal development in the cow." Thesis, University of Nottingham, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.537665.
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Sheldon, Iain Martin. "Utero-ovarian signalling in the postpartum cow." Thesis, University of Liverpool, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250448.
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Starbuck, Gareth Robert. "Progesterone and fertility in the dairy cow." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324102.
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Woodward, Janet Christine. "Insect host-parasitoid relationships in cow-dung." Thesis, University of Newcastle Upon Tyne, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241354.
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Berry, Elizabeth Ann. "The impact of changing dry cow strategies." Thesis, University of Warwick, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272665.
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Pope, Kelsey Frasier. "Cow-calf risk management among Kansas producers." Thesis, Manhattan, Kan. : Kansas State University, 2009. http://hdl.handle.net/2097/2168.
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Silva, Rogério Pereira da. "CQC: INFORMAÇÃO E ENTRETENIMENTO NO HUMOR MIDIATIZADO." Universidade Metodista de São Paulo, 2013. http://tede.metodista.br/jspui/handle/tede/665.
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Previous issue date: 2013-04-29<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This dissertation discusses the Humor in the media and their interaction with culture and social imaginary, it is a study of the program Custe o que Custar (CQC), broadcasted by Bandeirantes television network. Describes the evolution of humor in Western history, its relations with the cultures and their foray in the media, in the nineteenth century. Maps the humor present in the Brazilian media in XX and XXI centuries and presents a categorization of television comedy. About television program studied rescued up your history, from its origins in Brazil until today. It has been shown through literature, the process of mediatization of society and the creation of individual and social identities, guided by the production of consumer goods. There was integration among symbolic values of culture, media and social imaginary. We conclude by analyzing the program that humor is an important discursive element in the spread of ideas and values and can be both a transforming element when in accordance with the prevailing social structures. Also, the CQC is one element among many media products, which act as social agents to act in the construction of symbolic values and the social imaginary. In the case studied, the information is confused with entertainment, resulting in a hybrid characteristic of contemporary mediated culture.<br>Esta dissertação aborda o humor na mídia e sua interação com a cultura e o imaginário social, a partir de um estudo do programa Custe o que Custar (CQC), da rede Bandeirante de televisão. Inicialmente descreve a evolução do humor na história ocidental, suas relações com as culturas e sua incursão na mídia, a partir do século XIX. Num segundo momento mapeia o humor presente na mídia brasileira nos séculos XX e XXI e apresenta uma categorização de programas humorísticos televisivos. Em relação ao programa televisivo estudado, resgatou-se o seu histórico, desde a sua origem no Brasil até o início do ano de 2013. Demonstrou-se por meio de levantamento bibliográfico o processo de midiatização da sociedade e a criação de identidades individuais e sociais, pautadas pela produção de bens de consumo. Por meio de uma análise descritiva, pode-se verificar a integração entre valores simbólicos da cultura, mídia e imaginário social. Concluiu-se, pela análise do programa, que o humor é elemento discursivo importante na propagação de ideias e valores, e pode ser elemento tanto de transformação quando de conformidade com as estruturas sociais dominantes. Também, que o CQC é mais um elemento dentre diversos produtos midiáticos, que funcionam como agentes sociais a atuar na construção de valores simbólicos e no imaginário social. Ainda, que no caso estudado, a informação se confunde com o entretenimento, resultando em um produto híbrido característico da cultura midiatizada contemporânea.
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Faulkner, Dan B. "Management Factors to Improve Range Cow Reproduction." College of Agriculture, University of Arizona (Tucson, AZ), 2016. http://hdl.handle.net/10150/602232.
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2 pp.<br>Every ranch has unique labor and range resources. It is important to develop a nutrition and management program that is well matched to each individual ranch. Doing this can dramatically improve reproduction and ultimately the economic return to the ranch.
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Gibbons, Jennifer M. "Effect of selecting for 'robustness' on temperament in dairy cows." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/3793.
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Increased rates of involuntary culling as a consequence of poorer health and fertility had led to the conclusion that dairy cows appear to be less “robust” or adaptable than in the past. A way to address these concerns in breeding programs could be to select for health and welfare by including appropriate traits in a broader breeding index. However, it is important to consider any consequences that such breeding goals may have on dairy cow temperament and welfare. There were two phases to this study. The main objective of phase I was to develop tests for measuring responsiveness to humans and novelty, aggression at the feedface and sociability in dairy cows for use on commercial farms. To allow these tests to be used on commercial farm, they must be short in duration, non-invasive and not disruptive to the daily farming routine, while at the same time allowing comparisons between an individual cow’s responses in a number of similar situations. Results from this study suggested that a standardised human approach test and a stationary visual object are reliable tests for measuring responsiveness of dairy cows to changes in their environment. Measuring behaviour at the feedface proved to be an effective measure of between cow aggression. Inter-animal distance, position in relation to the herd, behavioural synchrony and presence at the feedface proved accurate measures of sociability. The remaining part of the study (Phase II) focussed on assessing how the implantation of a breeding index can affect the temperament of dairy cows on commercial farms. The tests developed were then recorded on 402 first lactation Holstein-Friesian dairy cows selected from sires that scored high (HI) and low (LO) for robustness (health, fertility and longevity traits) to produce two treatment groups on 33 commercial farms. For the purpose of this thesis, only the results from the assessment of aggressiveness are presented. Continuous focal sampling was used to record aggressive behaviour during feeding of the HI and LO cows within the herd. Cows from the HI group were involved in more aggressive interactions, initiated more aggression and received more aggression than cows from the LO group. There was a strong influence of management factors influencing aggression such as the quality of stockmanship, feedface design and nutrition. In conclusion, daughters from sires scoring high for robustness may be expressing a greater ability to maintain position at the feedface during an aggressive interaction. This highlights the importance of assessing the correlated effects of selective breeding, in this case for robustness, on behavioural traits.
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Overstreet, Katy. ""A Well-Cared for Cow Produces More Milk"| The Biotechnics of (Dis)Assembling Cow Bodies in Wisconsin Dairy Worlds." Thesis, University of California, Santa Cruz, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=13422590.
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<p> This dissertation examines intersections of care and production on commercial dairy farms in southern Wisconsin where farmers and their cows must produce ever more milk to keep farms in business. The maxim, “a well-cared for cow produces more milk,” is common sense in the dairy worlds of Wisconsin. It invokes the notion that putting time and money into caring for cows makes financial sense, but it obfuscates how optimizing cows toward milk production goals can instead create suffering. Amidst the moral knotting of this care-production logic expressed in a plethora of technical and scientific interventions into the dairy production system, humans and cows negotiate the everyday work of making milk. This thesis traces these forms of intervention and negotiation. </p><p> Farms, I argue, are patches, crosscut by multiple discourses that shape what it means to be a farmer and what it means to be a cow. Productivist discourse, which places pounds of milk at the heart of industry goals, justifies biotechnological interventions that seek to turn cows into machines of optimal milk and calf (re)production. These interventions target particular parts of cow bodies, as mechanistic components, in order to fine-tune them toward high milk production. </p><p> This dissertation performs a figurative (dis)assembly of human and bovine lives by unfolding the worlds and discourses that emerge through partitioning and tinkering with bodily parts: rumens, genes, ovaries, udders, and senses of taste. Through this unfolding, the multiple spatiotemporalities of production and the pursuit of efficiency become visible as material ways that cow bodies are optimized. A chapter on rumens demonstrates how cows are figured as cow-athletes that must have specialized diets, geared toward speeding up metabolism and thus the production of milk. A chapter on genes evokes the speculative futures where the imaginary Supercow and its yet unrealized production capacities await. A chapter on ovaries traces the hormonal manipulation of cow bodies toward synchronous reproduction and hides the toll of high-milk production. Taste, too, is partitioned, as a sensory capacity of the palate. A chapter on taste demonstrates how cows are made into subjects of nutritional discourse through caring practice that brings cow and human senses into recursive and mutual attunement. </p><p> By following the partitioning of cows, a key discursive move in the cow-as-machine paradigm, this dissertation follows how biotechnological interventions geared toward maximizing milk (re)production contribute to reimagining life and work on Wisconsin dairy farms in the midst of significant farm restructuring toward larger herds on fewer farms. This (dis)assembly, however violent, requires practices of care in order to hold cow bodies together as efficient producers. In following the discourses and practices that unfold around bodily (dis)assembly it is also possible to excavate the forms of resistance however small and the recuperative possibilities therein.</p><p>
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Knappe, Madeleine, and André Wunderlich. "Erstellung eines WMS zur Blattschnittübersicht aus CSW Metadaten." Thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-60838.
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Die Arbeit sollte die technische Machbarkeit der Verwendung digitaler Metadaten in Geodateninfrastrukturen aufzeigen und wenn möglich prototypisch umsetzen. Dabei sollten die Metadaten über Topographische Karten, welche in dem Metainformationssystem GeoMIS.Sachsen und über einen entsprechenden Katalogdienst (CSW) verfügbar sind, in einem Geoportal visualisiert werden. Im Ergebnis wurde ein Workflow entwickelt und umgesetzt, welcher die Metadaten automatisch abruft, die Metadaten entsprechend transformiert und abschließend die Metadaten über einen Kartendienst (WMS) für beliebige Geoportale bereitstellt. Dadurch ist es möglich die Aktualität von bereits vorhanden Kartendiensten bzw. deren Daten abzufragen. Durch die zyklische Ausführung des Prozesses auf dem Server stehen dem Nutzer jederzeit aktuelle Blattschnittübersichten zur Verfügung. Darüber hinaus steht ebenfalls ein Kartendienst für Vektordaten bereit über den die Geometriedaten und zusätzliche Sachinformationen direkt abgerufen werden können. Außerdem wird ein direkter Verweis (Link) auf den entsprechenden Metadatensatz im GeoMIS.Sachsen angegeben. Weiterhin wurde eine Transformation entwickelt, welche die im XML vorliegenden Metadaten in eine SVG überführt. Diese interaktive Blattschnittübersicht kann direkt auf Webseiten eingebunden werden. Außerdem kann aus dem SVG Format wiederum automatisiert ein PDF Dokument erstellt werden. Die Arbeit konnte nachweisen, dass zukünftig eine doppelte und getrennte Datenführung von Metadaten und Blattschnittübersichten nicht notwendig ist. Die Verwendung der IT Standardtechnologie XSLT zur Transformation von XML Daten hat sich bewährt und ermöglicht auch die Unterstützung weiterer Formate wie z.B. XHTML, KML (google) oder XCPF. Der erarbeitete Ansatz ist auch für andere Geodaten wie z.B. Luftbilder, historische Karten oder Bebauungspläne anwendbar. Durch die Visualisierung der textbasierten Metadaten war außerdem eine Qualitätssicherung der Metadaten möglich<br>The work shows the technical feasibility of digital metadata within Spatial Data Infrastructures. The visualization of digital geo-metadata in geoportals was prototypical implemented. The use case was a map sheet index of topographical maps who is prepared automatically. Geo-metadata are described in the metadata information system GeoMIS.Sachsen and provided by a catalogue service (CSW). As a result a workflow was developed and implemented which calls the metadata automatically, transforms the metadata into GML and finally prepares the metadata through a web map service in geoportals. Thereby it is possible to analyze the actuality of the topographical maps through map sheet index. Because of the cyclical update of the data the map patterns are always up to date. There is also a map service for vector data (WFS) implemented which enables a user to directly retrieve additional factual information. Furthermore a direct URL to the metadataset in the GeoMIS.Sachsen is stated. Besides the GML transformation another one was developed, which converts the metadata in XML format into scalable vector graphics (SVG). This interactive map sheet index could be integrated directly on websites. It is also possible to create a PDF document automatically out of the SVG with appropriate software tools. By using the XSLT standard additional formats could also be served. For example a transformation of the XML source data into KML (Google), XHTML or XCPF is possible. This work demonstrates that there is no need for a separation of metadata and map sheet index any more. The usage of XSLT was profitable and supports a lot of formats. The workflow is also usable for other geo data like air photography, historical maps or development plans. In addition it is possible to use the workflow to visualize other metadata like resolution or prices of each map. Because of the visualization of the text based metadata a quality check of the data is possible
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Ito, Kiyomi. "Assessing cow comfort using lying behaviour and lameness." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/17426.
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Over the past decade, there has been growth in scientific research on welfare in modern dairy production systems. The issue of cow comfort and how it relates to the risk of lameness has received considerable interest. The objectives of this thesis were to establish reliable methods of using lying behaviour as a measure of cow comfort, to describe the variation in lying behaviour of individual cows within farm and between farms, and to evaluate the relationship between stall comfort, lying behaviour, and lameness. A cross-farm assessment was conducted on 43 commercial dairy farms in the Fraser Valley region of British Columbia. Electronic data loggers recorded lying behaviour of 2033 cows at 1-min intervals for 5 days. The first study established that monitoring at least 30 cows per farm for 3 days provides an accurate estimate of the lying behaviour of the lactating cows at that time. Cows averaged 11 h/d lying down, separated into 9 bouts/d with an average duration of 88 min/bout. Cows were scored for lameness using a 5-point Numerical Rating System (NRS) in which 1 = sound and 5 = severely lame. A subsample of 1319 cows from 28 farms using either deep-bedded stalls (n = 11) or mattress stalls (n = 17) were used for the second study. Overall, 21% of the cows were scored as NRS = 3 and 7% as NRS = 4; no cow was scoared as NRS = 5. Mattress farms had higher prevalence of NRS = 4 compared to deep-bedded farms (9 vs. 4%, respectively). Cows with NRS = 4 housed on deep-bedded stalls spent 1.6 h/d more lying, and had longer bouts compared to cows with NRS ≤ 3, but there were no behavioural differences among cows with different degrees of lameness housed on mattress stalls. Extreme lying behaviour, particularly the high lying times (≥ 14 h/d) and long lying bouts (≥ 99 min/bout) were associated with increased odds of lameness, regardless of stall surface. Stall comfort, lying behaviour, and lameness are interlinked, and should all be integrated as measures of cow comfort.
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Parés, i. Riera Silvia. "Strategies for the optimization of cow dry period." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/458660.
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Les vaques lleteres necessiten un període no productiu d’eixugat entre lactacions per tal d’assolir alts nivells de producció en la següent lactació. Durant aquest període, especialment en animals altament productius, la glàndula mamària és més sensible a contraure infeccions que provocaran malestar a l’animal i pèrdues al productor. Per tal d’evitar-ho, actualment s’administren antibiòtics d’ampli espectre de forma preventiva, contribuint al problema de salut pública de les resistències bacterianes. Per tant, és interessant buscar estratègies per optimitzar l’eixugat i buscar alternatives a l’ús d’antibiòtic en la prevenció de les infeccions intramamàries.
En aquesta tesi hem treballat tres estratègies per millorar la immunitat i accelerar la involució de la glàndula mamària en l’eixugat. La primera estratègia es basa en la infusió de la proteïna de fase aguda M-SAA3, la qual s’ha descrit com a peça clau en la estimulació de la immunitat innata i com a proteïna activa en l’acceleració de la involució tissular mamària. En aquest cas, hem optimitzat la producció recombinant d’aquesta proteïna en un sistema lliure d’endotoxines per tal que es pugui administrar in vivo. La segona estratègia involucra l’administració de MMP9 recombinant en un format nanoparticulat per tal que sigui més estable que la seva versió soluble i tingui un patró d’alliberament lent, per tal d’allargar la durada de l’efecte. La MMP9 és la principal responsable de disgregar el teixit en l’eixugat, i per tant té un paper molt rellevant en la involució de la glàndula mamàra. Els resultats obtinguts demostren la seva funcionalitat in vivo. La tercera estratègia implica l’administració sistèmica de cabergolina, un bloquejador de prolactina, per tal d’accelerar l’aturada en la producció de la llet. S’ha estudiat el seu efecte en la involució i regeneració de la glàndula mamària per tal de comprovar que no es malmet la funcionalitat del teixit de cara a la següent lactació. Finalment, en l’últim estudi hem treballat en l’estudi dels fenòmens d’apoptosi, proliferació i senescència al voltant de l’eixugat, comparant MPC i PMC d’alta o baixa producció amb l’objectiu de trobar diferències que ens permetin trobar tractaments més efectius per cada grup.<br>Dairy cows need a dry period between lactations in order to achieve high production levels on the next lactation. During the dry period, specially in high-productive animals, the mammary gland is more susceptible to contract infections that produce discomfort to the animal and economical losses to the farmer. In order to avoid intramammary infections, the common practice is to infuse antibiotics at dry off as a preventive treatment, contributing to the emergence of bacterial resistances. Thus, it is interesting to find new strategies in order to optimize dry period and avoid preventive antibiotic use.
In this thesis, we worked on three strategies to enhance immunity and accelerate involution of the mammary gland at dry-off. The first strategy is based on the infusion of the acute phase protein M-SAA3, which has been proven useful as an activator of the immune system and a stimulator of mammary involution. For this, we optimized the recombinant production of endotoxin-free M-SAA3 in order to allow its administration in vivo. The second strategy involves the administration of recombinant MMP9 nanoparticles that are more stable than its soluble counterpart, and also show a slow-release pattern and thus a longer effect. MMP9 is the main responsible protein for disaggregation of ECM and thus involution of the mammary gland. Our results proved its functionality in vivo. The third strategy involves the systemic administration of cabergoline, a prolactin blocker, in order to accelerate the cessation of milk production at dry off; and also the analysis of tissular factors involved in involution and regeneration after cabergoline administration to assure that mammary involution and regeneration are not compromised. Finally, on the last study we evaluated the tissular differences between PMC and MPC producing high or low levels of milk on apoptosis and senescence factors amongst others, to find differences that would suggest new research lines in order to find more specific therapies for each group.
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Weiss, Daniel. "Interaction between dairy cow physiology and milking technology." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972579133.
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Vierhout, Crystal Nadine. "Selection of Dairy Cow Families For Superior Ferttility." NCSU, 2008. http://www.lib.ncsu.edu/theses/available/etd-11062008-114256/.
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The objective of this study was to determine if dairy cow families could be used to select for superior pregnancy rate. Holstein cow records in 13 southern states were obtained from Animal Improvement Laboratory of USDA. Cows were included from historical records dating back to birth year of 1981 or 1982 as the foundation cows. Historical records included cows calving and completing lactations through August, 2005. Cows from various generations were then put in maternal family groups using dam identification within herd. Standardized milk production and pregnancy rate (based on days open) deviations were obtained within herd-year-season. A family value was calculated by averaging the first and second lactations across parity by degree of relationship to the individual (free of progeny information) for generation one though four. Each family entered into one of three groups based on average deviations milk production, pregnancy rate, and combining pregnancy rate and milk into a selection index. Analysis was performed on fifth generation members to determine if milk production and pregnancy rates in the fifth generation were significantly associated with historical performance of the respective cow families. Average of the standardized values for milk production has improved (8,542 to 10,275 kg) from generation one to five while pregnancy rate decreased from (26.91 to 18.28) in the same period for cow families having daughters represented in the fifth generation. After adjustments for sire predicted transmitting ability (PTA), maternal-grandsire PTA, and family group for milk or pregnancy rate in the model the effect of maternal cow family remained highly significant for pregnancy rate (P < 0.05, R2=0.0759) and milk production (P < 0.05, R2=0.1192) when single trait selection was utilized. Utilizing a selection index with equal weights for milk and pregnancy rate the effect of the maternal cow family remained significant (P < 0.05, R2=0.0208) but pregnancy rate was not significant (P > 0.05, R2=0.0106). The findings provide evidence that pregnancy rate and milk production are inherited through the maternal lineage. Thus, there may be potential economic value in considering maternal family history for pregnancy rate when selecting future bull dams.
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Meyer, Allison Marie. "Utilization of forages in beef cow-calf nutrition." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/5055.
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Thesis (M.S.)--University of Missouri-Columbia, 2007.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on January 7, 2007) Vita. Includes bibliographical references.
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O'Toole, Marie Therese. "The politics of nationalism : secularising the sacred cow." Thesis, University of Hull, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310223.
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Chiy, Paul Chu. "Sodium supply for pasture and dairy cow production." Thesis, Bangor University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.331954.
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Shelley, Anthony N. "MONITORING DAIRY COW FEED INTAKE USING MACHINE VISION." UKnowledge, 2013. http://uknowledge.uky.edu/ece_etds/24.
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The health and productive output of dairy cows can be closely correlated to individual cow feed intake. Being able to monitor feed intake on a daily basis is beneficial dairy farm management. Each cow can be addressed individually with minimal time required from those working with the animals. This is essential as time management is closely tied to resource management in a dairy operation. Anything that can save time and resources and increase profitability and herd health is a paramount advantage in dairy farming. This study examined the use of machine vision structured light illumination three-dimensional scanning of cow feed to determine the volume and weight of feed in a bin before and after feeding dairy cow. Calibration and control tests were conducted to determine the effectiveness and capability of implementing such a machine vision feed scanning system. Such a system is ideal as it does not obstruct workflow or cow feeding behavior. This is an improvement over existing systems as the system in this research study can be implemented into existing farm operations with minimal effort and costs.
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Parkinson, T. J. "Endocrine studies of early pregnancy in the cow." Thesis, University of Nottingham, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384295.
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Reece, Jordan. "Virtual Close Quarter Battle (CQB) graphical decision trainer." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02sep%5FReece.pdf.
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Ong, Richard (Richard Liou-Yuan). "Cow-op : living and learning from our food." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/87147.
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Thesis: M. Arch., Massachusetts Institute of Technology, Department of Architecture, 2014.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 104-105).<br>How many of us actually know what we are eating? Our relationship with food is one of consumption. We see food, we eat food. Our current food life cycle model delivers meals directly to our plates with little or no oversight. Food has become an autonomous product; its connections and relationship to the land and people are hidden, many times intentionally. Education is key to successfully addressing all the problems that our current food / farm model is producing. While much can be learned from textbooks. A physical connection to the land, people and animals that provide our meals is more mutually beneficial. There is reciprocity between one's actions and their effects that simply cannot be achieved by only reading or watching. Complete immersion makes connections more immediate and relatable at a human scale. The design strategy focuses on animal behavior and needs. The land is manipulated to the benefit of the animals with the intention of developing a system that allows for appropriate and sustainable use of the land while providing adequate control by animal handlers. Cow-Op is a school where students come to learn and build physical bonds with the land and animals that feed them. The school will be designed as a dormitory cooperative where student live and share the responsibilities of caring for themselves and those they live with, including the animals that live alongside. Programs will focus around the full life cycle of livestock and how they contribute to our various needs. From basic living and feeding needs to producing and harvesting. The school will also take the food stuffs and bring them to market to understand how the global economy functions and its relations. There will also be culinary and manufacturing facilities to bridge the role of raw goods with their final consumables.<br>Richard Ong.<br>M. Arch.
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Price, Christopher Alan. "Endocrine control of ovulation rate in the cow." Thesis, University of Edinburgh, 1987. http://hdl.handle.net/1842/27210.
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Techniques to increase prolificacy in cattle have met with limited success; the aim of these studies was to investigate the potential of actively immunising cattle against certain gonadal hormones, and to examine the physiological basis of these treatments. Eight heifers were immunised against 8mg of a testosterone conjugate in Freund's Incomplete Adjuvant, & nine animals served as controls. These heifers were given one priming and two booster injections at four-month intervals. After the last booster injection, 7/8 animals had become anoestrous, and displayed significantly raised blood progesterone & mean LH concentrations,increased LH pulse frequency, & decreased mean FSH concentrations. Seven months after this treatment, 3/7 anoestrous heifers resumed ovarian cyclicity, with a mean ovulation rate of 2.7+0.7. To determine if the different ovarian responses observed above could be obtained by changes of ovarian steroid feedback seen during the oestrous cycle, groups of 6 heifers were implanted with large,medium or small sized oestradiol capsules during the luteal phase of the cycle. Five control heifers received empty implants. During the luteal phase of the cycle following implantation, all heifers were ovariectomised. The effect of the treatment on ovarian function and gonadotrophin secretion in the presence or absence of progesterone (PRID) was then determined. Increasing physiological concentrations of oestradiol reduced the number of large antral follicles and corpora lutea, but not the total number of antral follicles >lmm diameter. A combination of progesterone and oestradiol were fully effective in maintaining luteal-phase concentrations of LH and FSH, and follicular-phase concentrations of oestradiol alone were able to maintain LH and FSH concentrations within the physiological range. Thus changes of blood steroid levels similar to those seen during the oestrous cycle may interrupt ovarian function. Cattle were therefore immunised against a non-steroidal, partly purified fraction of ovine follicular fluid (PPFF) enriched ininhibin-like activity as measured in vivo and in vitro. Active immunisation against 0.4mg and 4mg ovine PPFF produced 1/5 & 3/5 heifers with multiple ovulations, respectively; this was not associated with changes of FSH secretion. To examine in more detail the endocrine responses to this treatment, and to investigate possible comparative aspects, cows were immunised against 4mg ovine, porcine or equine PPFF. No treatment increased ovulation rate, but the porcine-PPFF immunised heifers showed a 7-fold increase in mean LH secretion that could not be explained by alterations in pulsatile secretion or in steroid feedback. Collectively, these results suggest that the cow does not respond consistently to treatments so far designed to alter gonadotrophin secretion, that inhibin is not a major feedback hormone in this species, and that the heifer may possess an influential intra-ovarian control mechanism which ultimately determines ovulation rate.
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Cheng, Shiang-Yu, and 鄭香有. "Structure Design, Characteristics Measurement and Speed Control of a CW-CCW-Balancing Type Piezoelectric Actuator." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/87752573468817966984.
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碩士<br>清雲科技大學<br>機械工程系所<br>96<br>In this study, we design a CW-CCW-Balancing type piezoelectric actuator. There are three ways to verify result. These include dynamic simulate, characteristic measurement and rotation speed control. The 3-4-5 piezoelectric actuator invented by Dr. M. S. Ouyang in 2002 at the National Tsing Hua University. The 3-4-5 piezoelectric actuator form they presented has CW-CCW unbalance effect. However, we are designed a CW-CCW-Balancing type piezoelectric actuator by ANSYS software. It already can improve question of the 3-4-5 piezoelectric actuators. We called this new structure type the 4-9-9-14 piezoelectric actuators. We would use ANSYS software to verify three questions, which included CW-CCW rotation speed, optimal driving location and Radial/Longitudinally displacement.
Characteristic measurement is available in 3 categories. Friction; is measurement that we present a method to presume displacement value of the piezoelectric actuator observing surface friction condition by Scanning Electron Microscope (SEM). Temperature rise; is measurement that measures the temperature condition of the actuator surface by Thermal Video System. Finally we use an Impedance Analyzer to sweep, measure impedance and analysis the quality factor piezoelectric actuators.
This paper would use the 4-9-9-14 piezoelectric actuator to drive piezoelectric actuating platform. The fuzzy controller is written by LabVIEW software. It connects with instruments and GPIB interface. And then the fuzzy controller would be complete speed control.
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Chen, Yin-chih, and 陳垠志. "CPW Bandpass Filters." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/67137925460348012834.
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碩士<br>國立中央大學<br>電機工程研究所<br>95<br>In this study, a novel bandpass filter structure is proposed and realized using the coplanar waveguide (CPW) structure. The filter is based on the alternate connection of proposed resonator, impedance inverter, and admittance inverter. The proposed resonator consists of a transmission line and a short-end series stub. The short-end series stub can be patterned inside the center conductor of CPW and thus reduces size of resonator. As a result, the length of the proposed transmission-line can be reduced to less than half that of the conventional uniform quarter-wave transmission line resonator. Spurious responses are suppressed using the inherent transmission zero and thus increase the stopband bandwidth. This is an advantage of proposed filter over the conventional stepped-impedance filter. Specifically, fourth-order CPW bandpass filters are designed at 2GHz and the insertion loss is less than 2 dB between 1.66 and 2.34 GHz. Spurious suppression is better than 30dB up to four times the center frequency. The measurement results agree well with the simulation results.
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Krauss, Mathias. "Computerunterstütztes Qualitätscontrolling (CQC) : Entwurf eines Vorgehenskonzeptes zur Implementierung von CQC-Systemen /." 1996. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=007436391&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Ku, Wei-Chih, and 辜偉志. "Design of CPW Filters." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/75476376672733044464.
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碩士<br>國立臺灣大學<br>電信工程學研究所<br>91<br>In this study, new low-pass, high-pass, and bandpass coplanar-waveguide (CPW) filters are implemented and carefully examined.
First, we use various series and shunt stubs to accomplish a novel low-pass filter. The required stub structures are realized by properly etching on both signal stirp and ground planes of CPW. By periodically cascading this low-pass structure, we can improve the characteristics in the stopband. Second, a simple high-pass filter is implemented in the same manner as in low-pass one. The measured and simulated results of the low-pass and high-pass filters are compared and good agreement between them is observed.
Finally, we cascade the filter structures mentioned above to realize a CPW bandpass filter. By properly designing the associated low-pass and high-pass structures, one may control the performance of the cascade bandpass filter. The design principle of achieving this bandpass circuit is described and also confirmed by the experimental and theoretical results, which are in good agreement.
These proposed planar filters are easy to fabricate and compact, and they are suitable for communication systems.
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Kao, Ming-Hong, and 高銘鴻. "CPW lumped element design." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/44770051822378212379.
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碩士<br>國立中央大學<br>電機工程研究所<br>91<br>In the thesis, the characteristics of Coplanar Waveguide discontinuities are studied. A procedure for the calculation of the equivalent reactances of CPW discontinuities is presented. Simulation and measurement of the series and shunt resonators have been conducted to verify the validity of the algorithm.
The procedure of CPW equivalent lumped element value is also employed to obtain the coupling capacitance and inductance, which are required in the design of CPW capacitive-coupled quarter-wave bandpass filters and inductive-coupled half-wave bandpass filters. Good agreement between the simulation and measurement results has been obtained after the length of quarter-wave and half-wave transmission lines are adjusted.
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Tien-Yu, Chang, and 張天宇. "Design of CPW Directional Couplers." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/27231748590733184534.
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碩士<br>國立臺灣大學<br>電信工程學研究所<br>90<br>Directional couplers are useful components in developing measurement equipments, hybrid circuits, and microwave monolithic integrated circuits. Different levels of coupling coefficients are used in different applications. Besides, the characteristic of the quadrature phase difference could improve the performance of a circuit and makes it popular in the microwave circuit design. Directional couplers are basically composed of a pair of waveguides with the lengths of quarter wavelength. For planar transmission media, microstrip lines, slot lines, and coplanar waveguides are often used in designing directional couplers. Traditional coplanar waveguide directional couplers suffer from a serious flaw that the distance between the two signal lines has to be extremely small so as to achieve the 3dB coupling coefficient, and this small distance is usually hard to be realized in standard fabrication processes. The most popular method in solving this problem is using multi-strip lines to increase the total coupling of the directional couplers. In this thesis, novel coplanar waveguide directional couplers are developed. By properly connecting two loosely coupled directional couplers, a tightly coupled directional coupler could be realized. This type of directional couplers greatly increases the tolerance in fabrication processes. We fabricated several directional couplers with different coupling coefficients, from 1dB to 3dB, with central frequency at 1GHz on FR4 substrates. This new type of coplanar waveguide directional couplers is also proved to be useful in conductor-backed coplanar waveguide structures. The design of this new directional coupler is very easy, and it can be used in the modern microwave monolithic integrated circuits.
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Tsai, Ming-Ta, and 蔡銘達. "Miniaturized CPW-Fed Slot Antenna." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/82991202777469823673.
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碩士<br>臺灣大學<br>電信工程學研究所<br>98<br>In this thesis, a method for size reduction of the slot antenna is presented. The method first treats the resonant part of the antenna as a transmission line section. Then, the transmission line section is set equivalent to the circuit model with components that have small dimensions. Finally, resonant part of the antenna is replaced by the equivalent components and the size reduction is achieved.
Base on the above method, several miniaturized CPW-fed slot antennas are pro-posed. Compared with the traditional CPW-fed slot antennas, the proposed designs not only have much smaller areas, but still retain the radiation patterns. As expected, nar-rower bandwidth and lower antenna gain level are the cost of miniaturization. However, with some modifications on the antenna structure, bandwidth can be enlarged back to the original level. Of course, degradation on miniaturization level is the cost of this bandwidth enhancement.
All the methods and designs mentioned above are discussed and verified experi-mentally.