Academic literature on the topic 'Continuous motion'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Continuous motion.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Continuous motion"

1

Scarlet, JJ. "Continuous passive motion." Journal of the American Podiatric Medical Association 86, no. 4 (1996): 189–90. http://dx.doi.org/10.7547/87507315-86-4-189.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

London, Nicholas J., Margaret Brown, and Raymond J. Newman. "Continuous Passive Motion." Physiotherapy 85, no. 11 (1999): 616–18. http://dx.doi.org/10.1016/s0031-9406(05)66042-7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

&NA;. "Continuous Passive Motion." Back Letter 8, no. 6 (1993): 5. http://dx.doi.org/10.1097/00130561-199306000-00004.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Kribus, Abraham, Irina Vishnevetsky, Moshe Meri, Amnon Yogev, and Andrei Sytnik. "Continuous Tracking of Heliostats." Journal of Solar Energy Engineering 126, no. 3 (2004): 842–49. http://dx.doi.org/10.1115/1.1668026.

Full text
Abstract:
Tracking motions in current heliostats are usually performed in discrete steps, even though the motion of the sun is continuous. Aiming errors due to the discrete steps are often about 1 mrad or more. A significant reduction of tracking error by smooth continuous tracking is presented. The implementation uses an electronic speed control unit to modify the rotational speed of the two AC motors on an existing heliostat. The continuous tracking system was implemented and successfully operated at the Weizmann Institute heliostat field. Measurements of heliostat motion show that aiming error due to
APA, Harvard, Vancouver, ISO, and other styles
5

Samrithi, Yuvaraj, and S. Delphine Priscilla Antony Dr. "CONTINUOUS V/S RECIPROCATING FILE MOTION – A REVIEW." International Journal of Multidisciplinary Research and Modern Education 3, no. 1 (2017): 262–64. https://doi.org/10.5281/zenodo.569091.

Full text
Abstract:
<strong>Aim: </strong>To review the continuous and reciprocating file motions in endodontics <strong>Back Ground: </strong>The first endodontic file was crafted in the mid 1800’s. Thiis was basically a rudimentary k-file. K-files are, to these days. The most commonly used hand files in clinical practice. Automated instrumentation of the root canal was an early objective of clinical endodontics. Around 1992-1993, the first rotary NiTi instrument was introduced. These rotary NiTi instruments have undergone various modifications over the years to make them more effective and also to enhance their
APA, Harvard, Vancouver, ISO, and other styles
6

Norris, J. R., D. Revuz, and M. Yor. "Continuous Martingales and Brownian Motion." Mathematical Gazette 75, no. 474 (1991): 498. http://dx.doi.org/10.2307/3618671.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Kendall, Wilfrid S. "CONTINUOUS MARTINGALES AND BROWNIAN MOTION." Bulletin of the London Mathematical Society 24, no. 4 (1992): 410–13. http://dx.doi.org/10.1112/blms/24.4.410.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Sharpe, Michael, Bernt Øksendal, and Etienne Pardoux. "Continuous martingales and brownian motion." Stochastics and Stochastic Reports 42, no. 3-4 (1993): 229–40. http://dx.doi.org/10.1080/17442509308833822.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Reinecke, Steven M., Rowland G. Hazard, and Kevin Coleman. "Continuous Passive Motion in Seating." Journal of Spinal Disorders 7, no. 1 (1994): 29–35. http://dx.doi.org/10.1097/00002517-199407010-00004.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Wong, Kris W. N., Keith D. K. Luk, John C. Y. Leong, S. F. Wong, and Kenneth K. Y. Wong. "Continuous Dynamic Spinal Motion Analysis." Spine 31, no. 4 (2006): 414–19. http://dx.doi.org/10.1097/01.brs.0000199955.87517.82.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Continuous motion"

1

Sharon, Tanya Lee. "Parsing motion for meaning: Infants' individuation of actions from continuous motion." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/284857.

Full text
Abstract:
Almost nothing is known regarding infants' abilities for parsing the ongoing activity in their surroundings into distinct and meaningful parts. However, the individuation of actions is a fundamental ability, as explicated in a four-part introduction. Based on a review of general principles of individuation across multiple ontological domains, three possible mechanisms for action individuation in infants are identified and tested. The results of a series of studies show some important limitations in infants' abilities to parse actions from continuous motion. Although infants can perceptually di
APA, Harvard, Vancouver, ISO, and other styles
2

Boxerbaum, Alexander Steele. "Continuous Wave Peristaltic Motion in a Robot." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1333649965.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Mujica, Fernando Alberto. "Spatio-temporal continuous wavelet transform for motion estimation." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/15001.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Parks, Steven A. "Instantaneous axis of rotation for continuous human knee motion." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1997. http://handle.dtic.mil/100.2/ADA333396.

Full text
Abstract:
Thesis (M.S. in Mechanical Engineering and Mechanical Engineer) Naval Postgraduate School, June 1997.<br>Thesis advisor, Young W. Kwon. Includes bibliographical references (p. 117-118). Also available online.
APA, Harvard, Vancouver, ISO, and other styles
5

Parsons, Erin M. "Control system design for a continuous passive motion machine." Connect to resource, 2010. http://hdl.handle.net/1811/45477.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Bittikofer, Raymond P. "A computer controlled continuous passive motion device for ankle rehabilitation." Ohio : Ohio University, 1994. http://www.ohiolink.edu/etd/view.cgi?ohiou1176838831.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Steiger, Wilfried. "Smooth continuous path motion generation for stepping motor driven manipulators." Thesis, Nottingham Trent University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384899.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Lopetegui, Lazo Marcelo A. "Inter-Observer Reliability Assessments in Continuous Observation Time Motion Studies." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397236246.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Laptev, Dmitry. "Interaction of motion and perception in continuous attractor representations of position." Thesis, University College London (University of London), 2008. http://discovery.ucl.ac.uk/1444294/.

Full text
Abstract:
The simple relationship of movement to position via temporal integration helps to explain some of the neural representations of position seen in the mammalian brain, such as the representations of eye-position, and of head-direction and self-location within an environment. The positional information also comes from perception, such as vision, and the two sources need not necessarily agree. I construct neuronal firing rate models (introduced in Chapter 2) that utilize both velocity and visual inputs, and test them against physiological data acquired in situations when the two inputs are put in
APA, Harvard, Vancouver, ISO, and other styles
10

Jaisaardsuetrong, Jiratchaya. "Stability and wave motion problems in continuous media with second sound." Thesis, Durham University, 2009. http://etheses.dur.ac.uk/2121/.

Full text
Abstract:
In this thesis we investigate thermal convection and wave motion in models of second sound such as the Cattaneo model, Green and Laws model, Batra model, and Green and Naghdi model. For the Green and Laws and Batra models we also investigate questions of stability and uniqueness. The term second sound means the transport of heat as a thermal wave. The models are all presented within the framework of continuum mechanics. We use a mathematical technique involving an acceleration wave to solve some problems. Furthermore, in one of the chapters we use a numerical method, namely a D(^2) Chebyshevta
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Continuous motion"

1

Revuz, Daniel, and Marc Yor. Continuous Martingales and Brownian Motion. Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-662-06400-9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Revuz, Daniel, and Marc Yor. Continuous Martingales and Brownian Motion. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-662-21726-9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Marc, Yor, ed. Continuous martingales and Brownian motion. 3rd ed. Springer, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Marc, Yor, ed. Continuous martingales and Brownian motion. 2nd ed. Springer-Verlag, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Revuz, D. Continuous martingales and Brownian motion. 2nd ed. Springer, 2001.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Revuz, D. Continuous martingales and Brownian motion. Springer-Verlag, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Parks, Steven A. Instantaneous axis of rotation for continuous human knee motion. Naval Postgraduate School, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Salter, Robert Bruce. Continuous passive motion (CPM): A biological concept for the healing and regeneration of articular cartilage, ligaments, and tendons : from origination to research to clinical applications. Williams & Wilkins, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Salvatore, Rionero, and Ruggeri Tommaso, eds. 7th Conference on Waves and Stability in Continuous Media: Bologna, Italy, October 4-9, 1993. World Scientific, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Salvatore, Rionero, ed. Waves and stabilty in continuous media: Proceedings of the VIth International Conference, Sorrento, Italy, 9-14 October 1989. World Scientific, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Continuous motion"

1

Tsechpenakis, Gabriel, Dimitris Metaxas, and Carol Neidle. "Combining Discrete and Continuous 3D Trackers." In Human Motion. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6693-1_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Hainaut, Donatien. "Fractional Brownian Motion." In Continuous Time Processes for Finance. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06361-9_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Kallenberg, Olav. "Continuous Martingales and Brownian Motion." In Probability and Its Applications. Springer New York, 2002. http://dx.doi.org/10.1007/978-1-4757-4015-8_18.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Kallenberg, Olav. "Continuous Martingales and Brownian Motion." In Foundations of Modern Probability. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61871-1_20.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Cheah, Wei, Hassan Hakim Khalili, Simon Watson, Peter Green, and Barry Lennox. "Continuous Motion Utilising Advanced Motions on a Hexapod." In Towards Autonomous Robotic Systems. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-23807-0_16.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Perrin, Nicolas. "From Discrete to Continuous Motion Planning." In Springer Tracts in Advanced Robotics. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-36279-8_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Bhattacharya, Rabi, and Edward Waymire. "Local Time for Brownian Motion." In Continuous Parameter Markov Processes and Stochastic Differential Equations. Springer International Publishing, 2012. http://dx.doi.org/10.1007/978-3-031-33296-8_20.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Hamann, Friedhelm, Ziyun Wang, Ioannis Asmanis, Kenneth Chaney, Guillermo Gallego, and Kostas Daniilidis. "Motion-Prior Contrast Maximization for Dense Continuous-Time Motion Estimation." In Lecture Notes in Computer Science. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72646-0_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Lorenz, Hans-Walter. "Chaotic Dynamics in Continuous-Time Economic Models." In Nonlinear Dynamical Economics and Chaotic Motion. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-78324-1_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Du, Weiyu, Oleh Rybkin, Lingzhi Zhang, and Jianbo Shi. "Toward Continuous-Time Representations of Human Motion." In Computer Vision – ECCV 2020 Workshops. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-65414-6_37.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Continuous motion"

1

Liruiqi, Jiang. "Research on human combination continuous motion recognition method." In 2024 International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery (CyberC). IEEE, 2024. https://doi.org/10.1109/cyberc62439.2024.00047.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Kumar, Niteesh, Rashad Ahmed, Venkatesh B. H, Sanket Salvi, and Yash Panjwani. "Continuous Sign Language Recognition Using Leap Motion Sensor." In 2024 IEEE 3rd World Conference on Applied Intelligence and Computing (AIC). IEEE, 2024. http://dx.doi.org/10.1109/aic61668.2024.10730854.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Liu, Honglan. "Space fragment tracking algorithm based on modeling continuous motion." In 4th International Conference on Signal Image Processing and Communication, edited by Xianye Ben and Lei Chen. SPIE, 2024. http://dx.doi.org/10.1117/12.3041773.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Bu, Yuqing, Qi Zhang, Fugang Wu, Yuan Wang, Zhuxuan Tian, and Shisheng Guo. "Continuous Head Motion Recognition Method for Millimeter-Wave Radar." In 2025 5th International Conference on Sensors and Information Technology (ICSI). IEEE, 2025. https://doi.org/10.1109/icsi64877.2025.11009423.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Verhagen, Joris, Lars Lindemann, and Jana Tumova. "Temporally Robust Multi-Agent STL Motion Planning in Continuous Time." In 2024 American Control Conference (ACC). IEEE, 2024. http://dx.doi.org/10.23919/acc60939.2024.10644216.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Sie, Mu-Syuan, Yu-Chuan Cheng, and Cheng-Chin Chiang. "Key motion spotting in continuous motion sequences using motion sensing devices." In 2014 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC). IEEE, 2014. http://dx.doi.org/10.1109/icspcc.2014.6986208.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Szirmay-Kalos, Laszlo, Dora Varnyu, and Milan Magdics. "Motion Compensation for Dynamic PET with Continuous Motion Blur." In 2019 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC). IEEE, 2019. http://dx.doi.org/10.1109/nss/mic42101.2019.9059738.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Jinsung Kwon and Oussama Khatib. "Adaptive collision checking for continuous robot motions within motion constraints." In 2013 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2013). IEEE, 2013. http://dx.doi.org/10.1109/iros.2013.6697133.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Kribus, A., I. Vishnevetsky, M. Meri, A. Yogev, and A. Sytnik. "Continuous Tracking of Heliostats." In ASME 2003 International Solar Energy Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/isec2003-44018.

Full text
Abstract:
Tracking motions in current heliostats are usually performed in discrete steps, even though the motion of the sun is continuous. Aiming errors due to the discrete steps are often about 1 mrad or more. A significant reduction of tracking error by smooth continuous tracking is presented. The implementation uses an electronic speed control unit to modify the rotational speed of the two AC motors on an existing heliostat. The continuous tracking system was implemented and successfully operated at the Weizmann Institute heliostat field. Measurements of heliostat motion show that aiming error due to
APA, Harvard, Vancouver, ISO, and other styles
10

Choi, Han-Lim, and Jonathan P. How. "Continuous motion planning for information forecast." In 2008 47th IEEE Conference on Decision and Control. IEEE, 2008. http://dx.doi.org/10.1109/cdc.2008.4738972.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Continuous motion"

1

Araujo, E. G., D. R. Karuppiah, Y. Yang, et al. Software Mode Changes for Continuous Motion Tracking. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada438801.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Huang, Hui-Min, John Albert Horst, and Richard Quintero. Task decomposition and algorithm development for real-time motion control of a continuous mining machine. National Institute of Standards and Technology, 1991. http://dx.doi.org/10.6028/nist.ir.4596.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Cotrell, J. Motion Technologies CRADA CRD-03-130: Assessing the Potential of a Mechanical Continuously Variable Transmission. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/15009604.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Wu, Yingjie, Selim Gunay, and Khalid Mosalam. Hybrid Simulations for the Seismic Evaluation of Resilient Highway Bridge Systems. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2020. http://dx.doi.org/10.55461/ytgv8834.

Full text
Abstract:
Bridges often serve as key links in local and national transportation networks. Bridge closures can result in severe costs, not only in the form of repair or replacement, but also in the form of economic losses related to medium- and long-term interruption of businesses and disruption to surrounding communities. In addition, continuous functionality of bridges is very important after any seismic event for emergency response and recovery purposes. Considering the importance of these structures, the associated structural design philosophy is shifting from collapse prevention to maintaining funct
APA, Harvard, Vancouver, ISO, and other styles
5

ESA, ESA EOP-SM, and NASA SMD NASA. Exploring Earth’s Interface with Space – The Scientific Case for a Satellite Mission to the Lower Thermosphere-Ionosphere Transition Region. ESA, 2024. http://dx.doi.org/10.5270/esa-nasa.lti-sc.2024-07-v1.0.

Full text
Abstract:
Exploring Earth’s Interface with Space – The Scientific Case for a Satellite Mission to the Lower Thermosphere-Ionosphere Transition Region SUMMARY This report describes the scientific case for a mission concept to study the Earth’s Lower Thermosphere-Ionosphere – the LTI – which is the interface region between our atmosphere and space. The LTI is situated at altitudes between 100-200 km and is uniquely characterized by complex interactions between the co-existing neutral and ionized gases. The LTI receives and dissipates hundreds of gigajoules of energy every second from above due to solar wi
APA, Harvard, Vancouver, ISO, and other styles
6

Alcina de Fortoul, Sandra. Inteligencia emocional, desde el enfoque fenomenológico en la calidad de desempeño de la gerencia administrativa en la Universidad Autónoma de Chile. Universidad Catolica de Temuco; Semana Internacional Chile 2021, Cartagena, Colombia., 2021. http://dx.doi.org/10.32457/2050012728/980620214.

Full text
Abstract:
La investigación se orientó en la interpretación de la inteligencia emocional, desde el enfoque fenomenológico en la calidad del desempeño de la gerencia administrativa en la Universidad Autónoma de Chile, Sede Temuco. El estudio se basó en el paradigma interpretativo, bajo una investigación cualitativa con apoyo en el método fenomenológico. Los informantes que fueron objeto de la investigación, tres (3) docentes gerentes; de la Universidad Autónoma de Chile, Sede Temuco. Se aplicó la observación directa, también se empleó la entrevista. Para la validación de la información, se usó la categori
APA, Harvard, Vancouver, ISO, and other styles
7

Beason, Scott, Taylor Kenyon, Robert Jost, and Laurent Walker. Changes in glacier extents and estimated changes in glacial volume at Mount Rainier National Park, Washington, USA from 1896 to 2021. National Park Service, 2023. http://dx.doi.org/10.36967/2299328.

Full text
Abstract:
Surface area of glaciers and perennial snow within Mount Rainier National Park were delineated based on 2021 aerial Structure-from-Motion (SfM) and satellite imagery to document changes to glaciers over the last 125 years. These extents were compared with previously completed databases from 1896, 1913, 1971, 1994, 2009, and 2015. In addition to the glacial features mapped at the Park, any snow patches noted in satellite- and fixed-wing- acquired aerial images in September 2021 were mapped as perennial snowfields. In 2021, Mount Rainier National Park contained a total of 28 named glaciers which
APA, Harvard, Vancouver, ISO, and other styles
8

Effect of Spark Discharge Duration and Timing on the Combustion Initiation in a Lean Burn SI Engine. SAE International, 2021. http://dx.doi.org/10.4271/2021-01-0478.

Full text
Abstract:
Meeting the increasingly stringent emission and fuel efficiency standards is the primary objective of the automotive research. Lean/diluted combustion is a promising avenue to realize high-efficiency combustion and reduce emissions in SI engines. Under the diluted conditions, the flame propagation speed is reduced because of the reduced charge reactivity. Enhancing the in-cylinder charge motion and turbulence, and thereby increasing the flame speed, is a possible way to harness the combustion process in SI engines. However, the charge motion can have a significant effect on the spark ignition
APA, Harvard, Vancouver, ISO, and other styles
9

Informe de la Junta Directiva al Congreso de la República - Julio de 2023. Banco de la República, 2023. http://dx.doi.org/10.32468/inf-jun-dir-con-rep.4-2023.

Full text
Abstract:
En el transcurso del primer semestre de 2023 la economía colombiana continuó avanzando en el proceso de ajuste requerido para corregir los desequilibrios macroeconómicos y controlar las presiones inflacionarias acumuladas tras los diversos choques de oferta y la rápida expansión de la demanda durante 2021 y 2022, la cual superó el crecimiento potencial de la economía. El ajuste económico en curso ha sido posible gracias a la moderación del crecimiento de la demanda interna y a la progresiva disolución de los choques de oferta que elevaron los costos de producción. La demanda interna comenzó a
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!