Готові списки джерел за темами / Turning system

Добірка наукової літератури з теми "Turning system"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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Статті в журналах з теми "Turning system"

Yurkevich, V. V. "Expert system for turning." Russian Engineering Research 30, no. 6 (June 2010): 598–600. http://dx.doi.org/10.3103/s1068798x10060146.

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KAGIWADA, Tadao, Tadahiko KANAUCHI, and Masato TAKAHASHI. "A nonrevolving solid turning system utilizing turning NC language." Transactions of the Japan Society of Mechanical Engineers Series C 55, no. 513 (1989): 1285–88. http://dx.doi.org/10.1299/kikaic.55.1285.

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HARADA, Sho, Kenji SUZUKI, and Yohichi NAKAO. "10305 Single point diamond turning using water driven turning system." Proceedings of Conference of Kanto Branch 2013.19 (2013): 35–36. http://dx.doi.org/10.1299/jsmekanto.2013.19.35.

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Kim, Chyon Hae, Kenta Yonekura, and Shigeki Sugano. "Rope Turning Humanoid Robot System." Journal of Robotics and Mechatronics 26, no. 1 (February 20, 2014): 101–2. http://dx.doi.org/10.20965/jrm.2014.p0101.

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This paper describes a humanoid robot system that simultaneously controls the three factors, energy transmission, rotational axis and centrifugal force in ropeturning tasks. As a result, this system realized both rope turning with one fixed end and with a human rope turner.

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Gough, N. R. "Turning On the Repulsive System." Science Signaling 6, no. 289 (August 20, 2013): ec195-ec195. http://dx.doi.org/10.1126/scisignal.2004644.

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Borst, Jannie, and Andrew Cope. "Turning the immune system on." Immunology Today 20, no. 4 (April 1999): 156–58. http://dx.doi.org/10.1016/s0167-5699(98)01433-9.

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Matsushita, Makoto. "Water Jet Turning-Up System." JAPAN TAPPI JOURNAL 60, no. 5 (2006): 707–11. http://dx.doi.org/10.2524/jtappij.60.707.

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Li, Dong, Da-Wei Luan, Zhen-Fang Wang, and Tao Ma. "Dynamic Characteristics Analysis and Modeling of Giant Magnetostrictive Actuator Turning System." Applied Mechanics and Materials 477-478 (December 2013): 321–24. http://dx.doi.org/10.4028/www.scientific.net/amm.477-478.321.

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Based on DEFORM finite element software, the model of turning process of GMA was built, and the relation function among turning speed, turning depth and turning force of GMA turning system was achieved. Then, considering the turning force model, the dynamic equation of the turning system was established and the time domain and frequency domain of GMA turning system were discussed with different corresponding parameters. Results show that turning speed and turning depth have apparent effects on turning force of GMA turning system. Therefore, it is necessary to take the impact into consideration when analyzing dynamic characteristics of the turning system.

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Shyu, Jia-Ming, Y. W. Chen, and K. K. Wang. "A Mini CIM System for Turning." CIRP Annals 36, no. 1 (1987): 277–80. http://dx.doi.org/10.1016/s0007-8506(07)62603-1.

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Grove, E. A. "Turning neurons into a nervous system." Development 135, no. 13 (July 1, 2008): 2203–6. http://dx.doi.org/10.1242/dev.020511.

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Дисертації з теми "Turning system"

Dawson, Ross Hughan. "Kite Turning." Thesis, University of Canterbury. Mechanical Engineering, 2011. http://hdl.handle.net/10092/5475.

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Анотація:

This thesis investigates the mechanisms behind the control of a typical two line kite, where the lines are attached to the kite side by side. This arrangement gives the kite flyer the ability to apply a roll angle to the kite, which then results in a yawing motion. The reason for this yaw rotation has not been adequately described previously. The definitions of roll and yaw for a kite have been re-defined to match the real world behaviour of the kite-bridle-line system. Specifically, these are defined as rotations relative to the lines rather than the kite itself. This detail has been neglected in previous research, and has a significant effect on the turning behaviour of a kite. A static model of a kite represented by flat disks was created. This model allows the out of balance forces and moments to be found for a kite when it is held at any position. When the kite is held with a roll angle applied, the disk angles of attack become unequal. This causes a change in the magnitude, direction, and point of action of the aerodynamic forces on each disk, which can lead to a yaw moment. While this does not give a complete picture of how a kite turns, it does explain one of the two mechanisms that cause a kite to begin to yaw when a roll angle is applied. The other mechanism is due to the velocity of the roll rotation, and is out of the scope of this thesis since a dynamic analysis would be required. The static model showed that any variation to kite geometry or any parameter that affects the equilibrium position of the kite will affect turning response. The most important of these parameters for a simple kite represented by two disks is the dihedral angle. A minimum negative dihedral angle (or anhedral) is required for a kite to turn in the expected direction when a roll angle is applied. The value of the minimum anhedral angle required for this behaviour varies with other parameters, but is generally between 8° and 20°. Other parameters such as bridle geometry also affect the turning response of a kite, primarily because they alter the equilibrium positions of the kite and line. Altering these equilibrium positions has a strong effect on turning response, since it changes the initial disk angles of attack. Additionally, if the kite and line are not aligned perpendicular to each other (which is a rare condition for a kite) a roll angle further changes the disk angles of attack, since the roll angle is applied about an axis relative to the line rather than the kite. An investigation into the effect of varying wind velocity on turning response showed that it has an important effect. Some kites will reverse their response to a given roll angle at some wind velocities, which could make the kite very difficult to control. Additionally, some kites can alter their equilibrium positions sharply with wind velocity, again causing varying turning behaviour as the wind conditions change. Future work should examine the dynamic turning response of kites. A dynamic simulation could be used to examine how the turning response of a kite is influenced by the rate at which a control input is applied. Additionally, the behaviour of the kite once the initial turning movement has begun could be assessed.

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Chen, Shenjian. "Contribution to a technologically oriented turning system." Thesis, University of Manchester, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334441.

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Chen, Chia-Chi (Chia-Chi Jacky). "Improving energy efficiency : (turning wasted heat into cash flow)." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/105306.

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Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, Engineering Systems Division, 2015.
Cataloged from PDF version of thesis.
Includes bibliographical references (page 62).
The following gaps in critical goals are derived through a direct comparison of the Needs to Goals transformation versus the current waste heat recovery solutions and their stated goals. 1. Critical: Implementation of a sustainable financial plan which can help to initiate an increase in waste heat recovery 2. Critical: Deployment of waste heat recovery strategies for reducing greenhouse emissions A proposed solution to achieve these two goals would be: 1. Purchasing waste heat from industries. 2. Storing this energy with our proprietary thermal storage materials. 3. Selling the stored energy at either industrial sites or to pricier markets. New thermal-storage materials and a mini-sized combined heat and power (CHP) system have been further developed. This system will be the first to involve the arbitrage of waste heat energy by using cheap thermal storage material (made with zero greenhouse emissions) and a mini generator. This system could play an important role in providing economic incentives for industries that wish to recover waste heat.
by Chia-Chi (Jacky) Chen.
S.M. in Engineering and Management

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Zhang, Songling. "Development and Testing of An Application System for Intersection Data Collection and Analysis." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1513262599088906.

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Mao, Jialei. "Automatic system to measure turning movement and intersection delay." Akron, OH : University of Akron, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1239638295.

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Анотація:

Thesis (M.S.)--University of Akron, Dept. of Civil Engineering, 2009.
"May, 2009." Title from electronic thesis title page (viewed 8/2/2009) Advisor, Ping Yi; Committee members, William H. Schneider IV, Anil Patnaik; Department Chair, Wieslaw K. Binienda; Dean of the College, George K. Haritos; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.

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Mao, Jialei. "Automatic System to Measure Turning Movements and Intersection Delay." University of Akron / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=akron1239638295.

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Alajmi, Mahdi. "Neural-optimizer system for tool wear prediction in turning process." Thesis, Brunel University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415137.

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Arsecularatne, Joseph Alexander. "A process monitoring system to optimize cutting conditions in turning." Thesis, University of Manchester, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303763.

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Xu, Runsong. "Volute and diffuser performance analysis for high turning turbine system." Master's thesis, Mississippi State : Mississippi State University, 2002. http://library.msstate.edu/etd/show.asp?etd=etd-07122002-134859.

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Deng, Yuwen. "Animated vehicle turning path simulation system on an Internet/Intranet browser." CSUSB ScholarWorks, 2002. https://scholarworks.lib.csusb.edu/etd-project/2091.

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The animated vehicle turning path simulation system on Internet/Intranet web browser presented in this project is intended to provide civil engineers with an easy-to-use, all functional simulation system that could help them with highway and street design.

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Книги з теми "Turning system"

Haider, S. A. Validation of a technologically-oriented turning system (TECHTURN). Manchester: UMIST, 1991.

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Tona, Naoki. Japanese corporate and industrial system at a historical turning point. Seto City, Japan: University Research Institute, Nagoya Gakuin University, 2000.

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Purdue, D. R. PICTURN (PERA Instruction Code for Turning): Development of a computer-aided NC programming system for turning machines. Melton Mowbray: PERA, 1985.

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Henrik, Nielsen, ed. The GPS pocketbook: Turning ideas into reality : geometrical product specifications. Indianapoilis, IN: HN Metrology Consulting, Inc., 2005.

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Business plans to game plans: A practical system for turning strategies into action. Hoboken, N.J: John Wiley & Sons, 2004.

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1968-, Radkay Stephanie, ed. The RDS Forex system: A breakthrough method to profiting from market turning points. Hoboken, NJ: Wiley, 2012.

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Franz Rosenzweig's rational subjective system: The redemptive turning point in philosophy and theology. New York: P. Lang, 2011.

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Business plans to game plans: A practical system for turning strategies into action. 2nd ed. Los Angeles, Calif: Silver Lake Pub., 2000.

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1964-, Walsh James, ed. Business plans to game plans: A practical system for turning strategies into action. Santa Monica, Calif: Merritt, 1994.

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Wirth, Wolfgang. Healing with aloe: Tissue therapy - aloe therapy - agave healing system : the turning point for manyailments. Steyr: Wilhelm Ennshalter, 1986.

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Частини книг з теми "Turning system"

Honda, Naofumi, Takahiro Kawai, and Yoshitsugu Takei. "Application to the Noumi-Yamada System with a Large Parameter." In Virtual Turning Points, 51–77. Tokyo: Springer Japan, 2015. http://dx.doi.org/10.1007/978-4-431-55702-9_2.

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Daniel-Bey, K. D. A. "The American Educational System: Abuses and Alternatives." In Turning Teaching Inside Out, 71–77. New York: Palgrave Macmillan US, 2013. http://dx.doi.org/10.1057/9781137331021_7.

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Gupta, Aakriti, Sunil Kumar Singh, Kabir Ahuja, and Ankit Gupta. "Good Morning Turning to Spam Morning." In ICICCT 2019 – System Reliability, Quality Control, Safety, Maintenance and Management, 1–11. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8461-5_1.

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Gao, Hongli, and Mingheng Xu. "Intelligent Tool Condition Monitoring System for Turning Operations." In Advances in Neural Networks – ISNN 2005, 883–89. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11427469_140.

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Boldasov, D. D., A. S. Komshin, and A. B. Syritskii. "Phasechronometric Turning Monitoring System Testing in Industrial Conditions." In Lecture Notes in Mechanical Engineering, 1036–44. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-54817-9_121.

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Huntress, Wesley T., and Mikhail Ya Marov. "Turning from the Moon and Mars to Venus." In Soviet Robots in the Solar System, 291–309. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-7898-1_14.

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Baldi, C., G. De Blasio, G. Di Bella, A. Lucarelli, and R. Rizzi. "Turning the Compulsory Communication Data into a Statistical System." In Statistical Methods and Applications from a Historical Perspective, 217–26. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-05552-7_19.

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Kandananond, Karin. "Data Mining for Industrial System Identification: A Turning Process." In Lecture Notes in Electrical Engineering, 583–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-46578-3_68.

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Buttrey, Douglas J. "Chapter 46. A Survey of the Bi2O3–MoO3 Binary System." In Turning Points in Solid-State, Materials and Surface Science, 754–77. Cambridge: Royal Society of Chemistry, 2007. http://dx.doi.org/10.1039/9781847558183-00754.

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Liu, Zhiquan, Xuefei Shi, and Xin Ruan. "Research on an Anchoring System of Isodirectionally Turning Stay Cable." In High Tech Concrete: Where Technology and Engineering Meet, 2432–41. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-59471-2_277.

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Тези доповідей конференцій з теми "Turning system"

He, Xuejian, and Yonghua Chen. "A Haptic Virtual Turning Operation System." In 2006 International Conference on Mechatronics and Automation. IEEE, 2006. http://dx.doi.org/10.1109/icma.2006.257573.

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Hsu, Wei-Yao, Fong-Zhi Chen, Cheng-Fang Ho, Chien-Yao Huang, Yi-Hao Lin, Hui-Jean Kuo, and Ching-Hsiang Kuo. "Precision lens assembly with alignment turning system." In Optifab 2017, edited by Julie L. Bentley and Sebastian Stoebenau. SPIE, 2017. http://dx.doi.org/10.1117/12.2279667.

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Komura, Hirotaka, Gen Endo, Hiroyuki Nabae, and Koichi Suzumori. "Turning method that minimizes turning radius for snake-like robot with active joints and active wheels." In 2016 IEEE/SICE International Symposium on System Integration (SII). IEEE, 2016. http://dx.doi.org/10.1109/sii.2016.7844065.

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Leinster-Evans, S., J. Newell, and S. Luck. "Turning data into reality." In 14th International Naval Engineering Conference and Exhibition. IMarEST, 2018. http://dx.doi.org/10.24868/issn.2515-818x.2018.056.

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This paper looks to expand on the INEC 2016 paper ‘The future role of virtual reality within warship support solutions for the Queen Elizabeth Class aircraft carriers’ presented by Ross Basketter, Craig Birchmore and Abbi Fisher from BAE Systems in May 2016 and the EAAW VII paper ‘Testing the boundaries of virtual reality within ship support’ presented by John Newell from BAE Systems and Simon Luck from BMT DSL in June 2017. BAE Systems and BMT have developed a 3D walkthrough training system that supports the teams working closely with the QEC Aircraft Carriers in Portsmouth and this work was presented at EAAW VII. Since then this work has been extended to demonstrate the art of the possible on Type 26. This latter piece of work is designed to explore the role of 3D immersive environments in the development and fielding of support and training solutions, across the range of support disciplines. The combined team are looking at how this digital thread leads from design of platforms, both surface and subsurface, through build into in-service support and training. This rich data and ways in which it could be used in the whole lifecycle of the ship, from design and development (used for spatial acceptance, HazID, etc) all the way through to operational support and maintenance (in conjunction with big data coming off from the ship coupled with digital tech docs for maintenance procedures) using constantly developing technologies such as 3D, Virtual Reality, Augmented Reality and Mixed Reality, will be proposed. The drive towards gamification in the training environment to keep younger recruits interested and shortening course lengths will be explored. The paper develops the options and looks to how this technology can be used and where the value proposition lies.

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He, Wei, Y. Q. Tan, and Min Ren. "CAD\CAM system for formed turning tool grinding." In EM). IEEE, 2010. http://dx.doi.org/10.1109/ieem.2010.5674648.

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Akhtaruzzaman, Md, and Amir A. Shafie. "Contriving a turning gait for an anthropomorphous system." In 2011 IEEE Student Conference on Research and Development (SCOReD). IEEE, 2011. http://dx.doi.org/10.1109/scored.2011.6148715.

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Zhang, Tieyi, Zhenliang Huang, and Xue Huang. "Automatic Postal Parcel Turning Machine Experimental System Design." In 2nd International Conference on Electronic and Mechanical Engineering and Information Technology. Paris, France: Atlantis Press, 2012. http://dx.doi.org/10.2991/emeit.2012.513.

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Inamdar, Udaykumar B., and Karl M. Karbowicz. "R-Theta Diamond Turning System For Optical Surfaces." In OE LASE'87 and EO Imaging Symp (January 1987, Los Angeles), edited by Dietrich G. Korsch. SPIE, 1987. http://dx.doi.org/10.1117/12.939895.

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Kadyrov, Ishembek, Baktybek Turusbekov, Zhenbek Temirbekov, and Ulugbek Davlatov. "Universal Automatic Process Control System for Turning Machines." In 2021 3rd International Conference on Control Systems, Mathematical Modeling, Automation and Energy Efficiency (SUMMA). IEEE, 2021. http://dx.doi.org/10.1109/summa53307.2021.9632247.

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Duan, Jinjie, Yongkang Zhou, and Zhiming Zhan. "RTK-based Measuring System of Vehicle Turning Radius." In 2022 IEEE 6th Information Technology and Mechatronics Engineering Conference (ITOEC). IEEE, 2022. http://dx.doi.org/10.1109/itoec53115.2022.9734696.

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Middleton, Don. Earth System Grid II, Turning Climate Datasets into Community Resources. Office of Scientific and Technical Information (OSTI), August 2006. http://dx.doi.org/10.2172/1113798.

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Baird, E. D., R. R. Donaldson, and S. R. Patterson. The laser interferometer system for the large optics diamond turning machine. Office of Scientific and Technical Information (OSTI), June 1999. http://dx.doi.org/10.2172/9646.

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Tarko, Andrzej, and Robert Lyles. Development of a Portable Video Detection System for Counting Turning Vehicles at Intersections. West Lafayette, IN: Purdue University, 2002. http://dx.doi.org/10.5703/1288284313185.

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Bell, Jack, Rik Law, Howell Li, Ben Anderson, and Darcy M. Bullock. New Opportunities for Automated Pedestrian Performance Measures. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317351.

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Pedestrian safety is an important concern when evaluating intersections. Previous literature has shown that exclusive pedestrian phases improve safety, but at the expense of imposing greater pedestrian and motorist delay. However, outside of crash data, there are no easily implementable performance measures for pedestrians at traffic signals. This study proposes two performance metrics: (1) a time-to-jaywalk measure, and (2) the Conflict Occupancy Ratio (COR) for evaluating concurrent pedestrian signal phasing with turning vehicles. The COR quantifies conflicts between turning vehicles and pedestrians in the crosswalk. The COR is based upon a commercially deployed video detection system that correctly identified the presence of pedestrians to within two per cycle in this study. This performance is likely sufficient for the current application, but as the technology matures it will provide a scalable screening tool to identify intersections that have opportunities for capacity adjustments or warrant further direct field investigation.

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Chambers, Katherine, Joshua Murphy, and Kathryn McIntosh. 2017 hurricane season : recommendations for a resilient path forward for the Marine Transportation System. Engineer Research and Development Center (U.S.), July 2021. http://dx.doi.org/10.21079/11681/41285.

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In October 2017, the Coordinating Board of the US Committee on the Marine Transportation System tasked the MTS Resilience Integrated Action Team to identify the impacts, best practices, and lessons learned by federal agencies during the 2017 hurricane season. The RIAT studied the resiliency of the MTS by targeting its ability to prepare, respond, recover, and adapt to and from disruptions by turning to the collective knowledge of its members. Utilizing interagency data calls and a targeted workshop, the RIAT gauged the disruptive effect of the 2017 hurricane season and how Hurricanes Harvey, Irma, and Maria affected the operating status of at least 45 US ports across three major regions. This report identifies recommendations to better understand how the MTS can prepare for future storms and identifies activities by federal agencies that are contributing towards resilience. Such actions include hosting early pre-storm preparedness meetings, prioritizing communication between agencies and information distribution, and maintaining or updating existing response plans. Recommendations also target challenges experienced such as telecommunication and prioritization assistance to ports and critical infrastructure. Finally, the report offers opportunities to minimize the impacts experienced from storms and other disruptions to enhance the resilience of the MTS and supporting infrastructure.

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Roantree, Barra, Karina Doorley, Theano Kakoulidou, and Seamus O'Malley. Budget 2022. ESRI, December 2021. http://dx.doi.org/10.26504/qec2021win_sa_roantree.

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This Article outlines and assesses changes to the tax and welfare system announced as part of Budget 2022. It first looks at the main taxation measures announced before turning to employment, education and social welfare supports. It then considers the effect of the package of measures as a whole on the incomes of households using representative survey data from the Survey of Incomes and Living Conditions run on SWITCH – the ESRI’s tax and benefit microsimulation model – and ITSim – an indirect tax microsimulation model developed jointly by the ESRI and the Department of Finance. The Article concludes with some brief reflections on inflation forecasts and the policy-making process.

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Grosenbaugh, Mark A. Dynamic Behavior of Towed Cable Systems During Ship Turning Maneuvers. Fort Belvoir, VA: Defense Technical Information Center, October 2005. http://dx.doi.org/10.21236/ada439473.

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Vermillion, D. Turning over irrigation systems from the government of Indonesia to farmers. International Irrigation Management Institute (IIMI), 1987. http://dx.doi.org/10.5337/2013.004.

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Seery, Emma, Anna Marriott, Katie Malouf Bous, and Rebecca Shadwick. From Catastrophe to Catalyst: Can the World Bank make COVID-19 a turning point for building universal and fair public healthcare systems? Oxfam, December 2020. http://dx.doi.org/10.21201/2020.6928.

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COVID-19 has exposed the widespread failure to invest in strong and universal public health systems, putting millions of lives at risk and dramatically widening health inequalities. Oxfam analysed the World Bank’s emergency health funding to 71 countries in response to the pandemic. While its response has been rapid and significant, Oxfam finds that the World Bank has missed vital opportunities to strengthen public health systems so they can tackle COVID-19 and deliver health for all in the future. The research outlined in this briefing finds that 89% of World Bank projects do not plan to support any action to remove financial barriers, including user fees, that exclude millions from life-saving care; and two-thirds lack any plans to increase the number of healthcare workers. An urgent course correction is needed to help countries effectively fight the pandemic and build fairer, more resilient universal healthcare systems.

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Yahav, Shlomo, John Brake, and Noam Meiri. Development of Strategic Pre-Natal Cycling Thermal Treatments to Improve Livability and Productivity of Heavy Broilers. United States Department of Agriculture, December 2013. http://dx.doi.org/10.32747/2013.7593395.bard.

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The necessity to improve broiler thermotolerance and live performance led to the following hypothesis: Appropriate comprehensive incubation treatments that include significant temperature management changes will promote angiogenesis and will improve acquisition of thermotolerance and carcass quality of heavy broilers through epigenetic adaptation. It was based on the following questions: 1. Can TM during embryogenesis of broilers induce a longer-lasting thermoregulatory memory (up to marketing age of 10 wk) that will improve acquisition of thermotolerance as well as increased breast meat yield in heavy broilers? 2. The improved sensible heat loss (SHL) suggests an improved peripheral vasodilation process. Does elevated temperature during incubation affect vasculogenesis and angiogenesis processes in the chick embryo? Will such create subsequent advantages for heavy broilers coping with adverse hot conditions? 3. What are the changes that occur in the PO/AH that induce the changes in the threshold response for heat production/heat loss based on the concept of epigenetic temperature adaptation? The original objectives of this study were as follow: a. to assess the improvement of thermotolerance efficiency and carcass quality of heavy broilers (~4 kg); b. toimproveperipheral vascularization and angiogenesis that improve sensible heat loss (SHL); c. to study the changes in the PO/AH thermoregulatory response for heat production/losscaused by modulating incubation temperature. To reach the goals: a. the effect of TM on performance and thermotolerance of broilers reared to 10 wk of age was studied. b. the effect of preincubation heating with an elevated temperature during the 1ˢᵗ 3 to 5 d of incubation in the presence of modified fresh air flow coupled with changes in turning frequency was elucidated; c.the effect of elevated temperature on vasculogenesis and angiogenesis was determined using in ovo and whole embryo chick culture as well as HIF-1α VEGF-α2 VEGF-R, FGF-2, and Gelatinase A (MMP2) gene expression. The effects on peripheral blood system of post-hatch chicks was determined with an infrared thermal imaging technique; c. the expression of BDNF was determined during the development of the thermal control set-point in the preoptic anterior hypothalamus (PO/AH). Background to the topic: Rapid growth rate has presented broiler chickens with seriousdifficulties when called upon to efficiently thermoregulate in hot environmental conditions. Being homeotherms, birds are able to maintain their body temperature (Tb) within a narrow range. An increase in Tb above the regulated range, as a result of exposure to environmental conditions and/or excessive metabolic heat production that often characterize broiler chickens, may lead to a potentially lethal cascade of irreversible thermoregulatory events. Exposure to temperature fluctuations during the perinatal period has been shown to lead to epigenetic temperature adaptation. The mechanism for this adaptation was based on the assumption that environmental factors, especially ambient temperature, have a strong influence on the determination of the “set-point” for physiological control systems during “critical developmental phases.” Recently, Piestunet al. (2008) demonstrated for the first time that TM (an elevated incubation temperature of 39.5°C for 12 h/d from E7 to E16) during the development/maturation of the hypothalamic-hypophyseal-thyroid axis (thermoregulation) and the hypothalamic-hypophyseal-adrenal axis (stress) significantly improved the thermotolerance and performance of broilers at 35 d of age. These phenomena raised two questions that were addressed in this project: 1. was it possible to detect changes leading to the determination of the “set point”; 2. Did TM have a similar long lasting effect (up to 70 d of age)? 3. Did other TM combinations (pre-heating and heating during the 1ˢᵗ 3 to 5 d of incubation) coupled with changes in turning frequency have any performance effect? The improved thermotolerance resulted mainly from an efficient capacity to reduce heat production and the level of stress that coincided with an increase in SHL (Piestunet al., 2008; 2009). The increase in SHL (Piestunet al., 2009) suggested an additional positive effect of TM on vasculogenesis and angiogensis. 4. In order to sustain or even improve broiler performance, TM during the period of the chorioallantoic membrane development was thought to increase vasculogenesis and angiogenesis providing better vasodilatation and by that SHL post-hatch.

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