Relevant bibliographies by topics / Open throat

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Open throat'

Author: Grafiati
Published: 4 June 2021
Last updated: 20 February 2023

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Journal articles on the topic "Open throat"

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Lama, Moktan Sushila. "Management of the Homicidal Cut Throat: An Open Airway Injury." Anesthesia & Clinical Care 6, no. 3 (December 12, 2019): 01–04. http://dx.doi.org/10.24966/acc-8879/100042.

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F. Mitchell, Helen, Dianna T. Kenny, Maree Ryan, and Pamela J. Davis. "Defining ‘open throat’ through content analysis of experts’ pedagogical practices." Logopedics Phoniatrics Vocology 28, no. 4 (October 2003): 167–80. http://dx.doi.org/10.1080/14015430310018856.

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Mitchell, Helen F., and Dianna T. Kenny. "Can experts identify “open throat” technique as a perceptual phenomenon?" Musicae Scientiae 10, no. 1 (March 2006): 33–57. http://dx.doi.org/10.1177/102986490601000103.

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Little, P., I. Williamson, G. Warner, C. Gould, M. Gantley, and A. L. Kinmonth. "Open randomised trial of prescribing strategies in managing sore throat." BMJ 314, no. 7082 (March 8, 1997): 722. http://dx.doi.org/10.1136/bmj.314.7082.722.

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Zheng, Zhaolei, Hanyu Liu, and Xuefeng Tian. "Effects of throat area and inlet area of intake port on mixture formation of gasoline direct injection engines." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 5 (April 2, 2018): 1150–61. http://dx.doi.org/10.1177/0954407018762587.

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To study the effects of intake port structure parameters (inlet area and throat area) of a gasoline direct injection engine on mixture formation, a steady-flow test and transient simulation with four kinds of intake ports (named Cases 1–4) were simulated using AVL FIRE; a four-valve, four-cylinder gasoline direct injection engine with Case 1 was also operated under wide-open-throat conditions with a speed of 5500 r/min as the test basis. According to the simulation results, the flow coefficient increased with an increase in throat and decrease in inlet areas; however, a reverse change of them can improve the tumble ratio. In addition, the tumble ratio in a cylinder can be increased by reducing the throat and inlet areas. However, the concentration is not notable at high-speed wide-open-throat conditions. A larger tumble ratio and stronger turbulent kinetic energy intensity of in-cylinder flow are beneficial to form a homogeneous mixture, which ensures a better distribution of air–fuel mixture at ignition time. Moreover, larger inlet area and smaller throat area ensure less NO emissions.
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Lu, Jihong, Jing Li, Yiping Ren, Doug Stevenson, and Mark Bartlett. "An Open Label, Self-Controlled Study to Evaluate a “Fresh Clear” Formulation on Throat Symptoms in a Smoking Population." Current Developments in Nutrition 4, Supplement_2 (May 29, 2020): 431. http://dx.doi.org/10.1093/cdn/nzaa045_064.

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Abstract Objectives Smoking has been associated with several respiratory problems including cough, phlegm production, dry throat, itchy throat, and hoarse voice. The objective of this study was to evaluate the effect of a botanical extract-based blend, Fresh Clear (FC), on the respiratory system of a smoking population. FC consists of 3 of botanical extracts: broccoli seed (Brasssica oleracea), Luo Han Guo (Siraitia grovenorii), and Honeysuckle Flower Bud (Lonicera japonica). Broccoli seed is rich in Sulforaphane, which was reported to promote healthy inflammatory balance, as well as to positively impact oxidative stress and DNA-damaging substances. Both Luo-han-guo and Honeysuckle Flower Bud have been used as traditional Chinese medicines for the treatment of pharyngitis, pharyngeal pain, as well as an antitussive remedy and anti-inflammatory and anti-oxidative agent in China and East Asia. Methods This is an open-label, self-controlled study. Eighty smoking volunteers who had mild or moderate throat discomfort without respiratory diseases and other severe diseases were recruited. Volunteers were asked to consume FC at a dose of 1.45 g, 2 times/day for 8 weeks. Their symptoms of cough, phlegm production, dry throat, itchy throat, and hoarse voice were evaluated at week 0 (Baseline), week 4, and week 8 by questionnaire. Ultimately, 75 volunteers completed the study, 44 males and 31 females. Average age was 47.0 ± 10.6 years. All volunteers had smoked for over 3 years. Results We found significant amelioration of the listed throat symptoms as compared to baseline after 4- and 8- weeks FC consumption. Effective ratios at week 4 and week 8 respectively were 88% and 94% in cough, 91% and 95% in phlegm production, 90% and 90% in dry throat, 92% and 95% in itchy throat, and 94% and 89% in hoarse voice. Conclusions 8 weeks consumption of FC was shown to ameliorate smoking-induced throat symptoms in a smoking population with a smoking history of over 3 years. Funding Sources Nu Skin Enterprises.
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Nayek, Milan, Rajib Das, Subhasish Das, Prasun Dutta, and Asis Mazumdar. "Open Channel Discharge Measurement Using 0.127 Metre (5 Inch) Long-Throat Flume." Asian Journal of Water, Environment and Pollution 13, no. 2 (April 18, 2016): 29–38. http://dx.doi.org/10.3233/ajw-160014.

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Angotoeva, I. B., and M. M. Magomedova. "Analysis of the microbiota from the surface of the tonsils in patients with laryngopharyngeal reflux." Russian Otorhinolaryngology 21, no. 2 (2022): 8–15. http://dx.doi.org/10.18692/1810-4800-2022-2-8-15.

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Due to the large number of patients with complaints of discomfort and sore throat not associated with infectious tonsillopharyngitis, the question of the role of various microorganisms in the occurrence of these complaints remains open. Objective. Analysis of the species microbial landscape of the pharyngeal surface of the palatine tonsils in patients with laryngopharyngeal reflux. Patients and methods. The study included 120 women and 71 men with a median age of 38.0. Patients with acute tonsillopharyngitis (selection was carried out according to the Centor criteria) and patients with difficulty in nasal breathing were not included. The patients underwent oropharyngoscopy, analysis of the results of cultural inoculation from the mucous membrane of the pharyngeal surface of the palatine tonsils, assessment of complaints from the throat on the VAS (visual analogue scale). Results and discussion. It was found that most of the patients were worried about sore throat, the median quantitative assessment was 4.0, patients rated the feeling of a foreign body or lump at 3.0, difficulty in swallowing food, liquid, or tablets, at 0.0. When collecting an anamnesis, it was possible to find out that pain and discomfort in the throat bothered patients for a long time from 2 weeks to several years. Often, patients associated sore throats with general hypothermia; taking chilled drinks; with a viral infection with a chronic bacterial infection; therefore, numerous studies were carried out to detect pathogenic microflora. Conclusion. On the surface of the palatine tonsils in patients with laryngopharyngeal reflux (LPR), in addition to normal, opportunistic, and pathogenic microflora, representatives of the intestinal flora were found in clinically insignificant amounts of colony-forming units; in 63% of patients with LPR, caseous plugs were found in the lacunae of the palatine tonsils; patients with tonsillolitis (47%) felt bad breath themselves, which others did not notice; patients with LPR are characterized by difficulty in swallowing tablets and sore throat with an empty throat; systemic antibiotic therapy for pain with an empty throat, which was received by 98% of patients, was ineffective.
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WEN, WEN-YU. "EFFECTS OF OPEN STRING MODULI ON RACETRACK INFLATION." Modern Physics Letters A 23, no. 17n20 (June 28, 2008): 1589–97. http://dx.doi.org/10.1142/s0217732308027989.

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In this note, we refine the racetrack inflation model constructed in Ref. 3 by including the open string modulus. This modulus encodes the embedding of our braneworld inside some Calabi-Yau throat. We argue that in generic this open string modulus dynamically runs with the inflaton field thanks to its nonlinear coupling. A full analysis becomes difficult because the scalar potential changes progressively during the inflation epoch. Nevertheless, by explicit construction we are still able to build a realistic model through appropriate choices of the initial conditions.
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He, Lei, Ruixiang Song, Jie Yang, Yubin Wu, and Yanan Wu. "Field Test Research on Environmental Noise Characteristics in the Throat Area of Metro Depot." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 5 (August 1, 2021): 1818–22. http://dx.doi.org/10.3397/in-2021-1960.

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Environmental noise pollution is the primary environmental problem faced by the superstructure of metro depots. The throat area of depot is prone to high wheel-rail impact noise due to the use of seam lines, multiple joints, turnouts and small radius curves. The noise exerts through fire and ventilation openings on the side walls, which may cause high annoyance to the residents in the superstructures both on the upper cover and surrounding areas. In this paper, a field test was condected on the environmental noise in the throat area of metro depot. The noise of the trackside and adjacent open space were recorded, and the time-frequency domain characteristics and statistical characteristics and attenuation law of the noise generated by train operation in the throat area were analyzed. The research results have certain guiding significance for the prediction and control of noise in the throat area of the depot.
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Dissertations / Theses on the topic "Open throat"

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Mitchell, Helen Frances. "Defining vocal quality in female classical singers: pedagogical, acoustical and perceptual studies." Thesis, The University of Sydney, 2005. http://hdl.handle.net/2123/710.

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The technique of 'open throat' is a pedagogical concept transmitted through the oral tradition of singing. This thesis explored the pedagogical perceptions and practices of 'open throat' using empirical methodologies to assess technical skill and associated vocal quality. In the first study (Mitchell, Kenny, Ryan, & Davis, 2003), we assessed the degree of consensus amongst singing pedagogues regarding the definition of, and use in the singing studio of the technique called 'open throat.' Results indicated that all fifteen pedagogues described 'open throat' technique as fundamental to singing training and were positive about the sound quality it achieved, especially in classical singing. It was described as a way of maximising pharyngeal space or abducting the false vocal folds. Hypotheses generated from pedagogical beliefs expressed in this first study were then tested acoustically (Mitchell & Kenny, 2004a, 2004b). Six advanced singing students sang in two conditions: 'optimal' (O), using maximal open throat, 'sub-optimal' (SO), using reduced open throat and loud sub-optimal (LSO) to control for the effect of loudness. From these recordings, acoustic characteristics of vibrato (Mitchell & Kenny, 2004b) and energy distribution (Mitchell & Kenny, 2004a) were examined. Subsequent investigations of the vibrato parameters of rate, extent and onset, revealed that extent was significantly reduced and onset increased when singers did not use the technique. As inconsistent vibrato is considered indicative of poor singing, it was hypothesized that testing the energy distribution in these singers' voices in each condition would identify the timbral changes associated with open throat. Visual inspection of long term average spectra (LTAS) confirmed differences between O and SO, but conventional measures applied to long term average spectra (LTAS), comparing energy peak height [singing power ratio (SPR)] and peak area [energy ratio (ER)] were not sensitive to the changes identified through visual inspection of the LTAS. These results were not consistent with the vibrato findings and suggest that conventional measures of SPR and ER are not sufficiently sensitive to evaluate LTAS. In the fourth study, fifteen expert listeners consistently and reliably identified the presence of open throat technique with 87% accuracy (Mitchell & Kenny, in press). In the fifth study, LTAS measurements were examined with respect to the perceptual ratings of singers. There was no relationship between perceptual rankings of vocal beauty and acoustic rankings of vocal quality (Kenny & Mitchell, 2004, in press). There is a vast literature of spectral energy definitions of good voice but the studies in this thesis have indicated that current acoustic methods are limited in defining vocal quality. They also suggest that current work in singing has not sufficiently incorporated perceptual ratings and descriptions of sound quality or the relationship between acoustic and perceptual factors with pedagogical practices.
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Mitchell, Helen Frances. "Defining vocal quality in female classical singers: pedagogical, acoustical and perceptual studies." University of Sydney. Australian Centre for Applied Research in Music Performance, 2005. http://hdl.handle.net/2123/710.

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The technique of �open throat� is a pedagogical concept transmitted through the oral tradition of singing. This thesis explored the pedagogical perceptions and practices of �open throat� using empirical methodologies to assess technical skill and associated vocal quality. In the first study (Mitchell, Kenny, Ryan, & Davis, 2003), we assessed the degree of consensus amongst singing pedagogues regarding the definition of, and use in the singing studio of the technique called �open throat.� Results indicated that all fifteen pedagogues described �open throat� technique as fundamental to singing training and were positive about the sound quality it achieved, especially in classical singing. It was described as a way of maximising pharyngeal space or abducting the false vocal folds. Hypotheses generated from pedagogical beliefs expressed in this first study were then tested acoustically (Mitchell & Kenny, 2004a, 2004b). Six advanced singing students sang in two conditions: �optimal� (O), using maximal open throat, �sub-optimal� (SO), using reduced open throat and loud sub-optimal (LSO) to control for the effect of loudness. From these recordings, acoustic characteristics of vibrato (Mitchell & Kenny, 2004b) and energy distribution (Mitchell & Kenny, 2004a) were examined. Subsequent investigations of the vibrato parameters of rate, extent and onset, revealed that extent was significantly reduced and onset increased when singers did not use the technique. As inconsistent vibrato is considered indicative of poor singing, it was hypothesized that testing the energy distribution in these singers� voices in each condition would identify the timbral changes associated with open throat. Visual inspection of long term average spectra (LTAS) confirmed differences between O and SO, but conventional measures applied to long term average spectra (LTAS), comparing energy peak height [singing power ratio (SPR)] and peak area [energy ratio (ER)] were not sensitive to the changes identified through visual inspection of the LTAS. These results were not consistent with the vibrato findings and suggest that conventional measures of SPR and ER are not sufficiently sensitive to evaluate LTAS. In the fourth study, fifteen expert listeners consistently and reliably identified the presence of open throat technique with 87% accuracy (Mitchell & Kenny, in press). In the fifth study, LTAS measurements were examined with respect to the perceptual ratings of singers. There was no relationship between perceptual rankings of vocal beauty and acoustic rankings of vocal quality (Kenny & Mitchell, 2004, in press). There is a vast literature of spectral energy definitions of good voice but the studies in this thesis have indicated that current acoustic methods are limited in defining vocal quality. They also suggest that current work in singing has not sufficiently incorporated perceptual ratings and descriptions of sound quality or the relationship between acoustic and perceptual factors with pedagogical practices.
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Adewopo, Victor A. "Exploring Open Source Intelligence for cyber threat Prediction." University of Cincinnati / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin162491804723753.

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Khanna, Isha. "Phishing on Open WLANs: Threat and Preventive Measure." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/36170.

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Phishing is an internet security issue whose shape is still changing and size is still increasing. This thesis shows the possibility of a phishing attack on open, private Wireless LANs. Private WLANs which use a login page to authenticate users in hotels, airports and academic campuses are all vulnerable to this attack. Virginia Tech's WLAN is used as an example to show that the attack is possible. The attack combines two very well known attacks: one is to deceptively guide a user into logging into a fake website, which shows similar log-in page to the page of the website the user intends to go to, and the second attack is to show users a valid certificate, which does not show a warning. The rogue server takes the user to a log-in page which is similar to Virginia Tech's log-in page and shows him a valid security certificate. We present a solution to the proposed problem. Software is implemented that runs on Windows Vista. The software warns the user if there are servers with more than one type of security certificates, claiming to be from the same network. We contrast our method to already existing methods, and show in what respects our solution is better. The biggest advantage of this method is that it involves no change on the server side. It is not necessary for the users to have any prior knowledge of the network, which is very helpful when the users access WLAN at airports and hotels. Also, when using this method, the user does not need to connect to any network, and is still able to get a warning. It however, requires the user to be able to differentiate between the real and fake networks after the user has been warned.
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McCarthy, Martin. "Contra-rotating open rotor reverse thrust aerodynamics." Thesis, Cranfield University, 2011. http://dspace.lib.cranfield.ac.uk/handle/1826/10448.

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Reverse thrust operations of a model scale Contra-Rotating Open Rotor design were numerically modelled to produce individual rotor thrust and torque results comparable to experimental measurements. The aims of this research were to develop an understanding of the performance and aerodynamics of open rotors during thrust reversal operations and to establish whether numerical modelling with a CFD code can be used as a prediction tool given the highly complex flowfield. A methodology was developed from single rotor simulations initially before building a 3D‘frozen rotor’ steady-state approach to model contra-rotating blade rows in reverse thrust settings. Two different blade pitch combinations were investigated (β1,2 =+30°,- 10° and β1,2 =-10°,-20°). Thrust and torque results compared well to the experimental data and the effects of varying operating parameters, such as rpm and Mach number, were reproduced and in good agreement with the observed experimental behaviour. The main flow feature seen in all the reverse thrust cases modelled, both single rotor and CROR, is a large area of recirculation immediately downstream of the negative pitch rotor(s).This is a result of a large relative pressure drop region generated by the suction surfaces of the negative pitch blades. An initial 3D unsteady sliding-mesh calculation was performed for one CROR reverse thrust case. The thrust and torque values were in poor agreement with experimental values and the disadvantages relating to time costs and required computational resources for this technique were illustrated. However, the results did yield a nominal unsteady variation of thrust and torque due to rotor phase position. Overall the work shows that it may be possible to develop a CROR reverse thrust prediction tool of beneficial quality using CFD models. The research also shows that the frozen rotor approach can be adopted without undermining the fidelity of the results.
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Engvall, Christoffer. "Security in Wireless Sensor Networks for Open Controller." Thesis, Linköpings universitet, Databas och informationsteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-91089.

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In this thesis we develop, evaluate and implement a security solution for Open Controllers wireless sensor network platform. A scenario is used to describe an exemplar application showing how our system is supposed to function. The security of the platform is analyzed using a well-established threat modeling process and attack trees which result in the identification of a number of risks, which could be security weaknesses. These attack trees visualize the security weaknesses in an easy to access way even for individuals without special security expertise. We develop a security solution to counter these identified risks. The developed security solution consists of three different security levels together with a number of new security policies. Each additional level applies different security mechanisms to provide increasingly improved security for the platform. The new security policies ensure that the security solution is continuously secure during its operating time. We implement part of the security solution in the Contiki operating system to assess its function in practice. Finally we evaluate the developed security solution by looking back to the previously identified weaknesses and the implementation proving that the security solution mitigates the risks.
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Tariq, Muhammad Tahir and Aleem. "Quality of the Open Source Software." Thesis, Blekinge Tekniska Högskola, Avdelningen för programvarusystem, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-1251.

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Quality and security of software are key factors in the software development. This thesis deals with the quality of open source software (OSS for short) and different questions that are related with open source and close source software has discussed in the thesis proposal. Open source software is a process by which we can produce cheap and qualitative software and its source could be re-use in the development of the software. Close source software is more expensive than open source software and we can not re-use its source code, so there should be a way by which cheap and qualitative software should be produced. This thesis describes that how the quality of the open source software can be evaluated and increased. There are different factors which are helpful to increase the software quality these factors are low cycle time, low cost and small size of software. These factors are also helpful for the development of software product according to the requirement of clients and the users of that software. This thesis also describes the security and performance of close and open source software and it also analyze different software development processes. The quality of OSS can be increased by use of best evaluation techniques, best quality measurement, best development tools and best development process. There are also many challenges for OSS, which it has to face for improvement of the quality of OSS. Initially there were many drawbacks in open source software but with the passage of time improvement has produced in it. This thesis also describes the compression, advantages and disadvantages of the close source and open source software.
0046-737218653 , 0046-739131829
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Pratt, Landon James. "Cliff Walls: Threats to Validity in Empirical Studies of Open Source Forges." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3511.

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Artifact-based research provides a mechanism whereby researchers may study the creation of software yet avoid many of the difficulties of direct observation and experimentation. Open source software forges are of great value to the software researcher, because they expose many of the artifacts of software development. However, many challenges affect the quality of artifact-based studies, especially those studies examining software evolution. This thesis addresses one of these threats: the presence of very large commits, which we refer to as "Cliff Walls." Cliff walls are a threat to studies of software evolution because they do not appear to represent incremental development. In this thesis we demonstrate the existence of cliff walls in open source software projects and discuss the threats they present. We also seek to identify key causes of these monolithic commits, and begin to explore ways that researchers can mitigate the threats of cliff walls.
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Edman, Jakob. "En Kommunikations Illustration : Interaktionen mellan deltagare i ledarlösa samarbeten." Thesis, Uppsala University, Media and Communication Studies, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-124544.

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Purpose: The objective of this study is to illustrate how participants in leaderless based projects communicate with each other. Several studies have focused on technology-supported projects, such as open source projects, with an established project manager and goal. There is a lack, to the best of our knowledge, in studies that deal with the communication pattern in a leaderless computer supported collaborative project.

Method: We have chosen to use a quantitative method where we systematically group several messages according to their content. This method was used in a similar study to illustrate the communication between participants involved in an open source project. We have taken the same Kripendorff based method and adapted it to our study by adding more descriptive variables.

Theoretical perspectives: Manuel Castell discusses the aspects of a new communication power that is rooted in the individual as part of a larger creative audience. The collaborative works we have studies are prime examples of how the creative audience works together and of mass self‐communication. In order to analyze the potential motivations behind the participant’s involvement in these collaborative works, we have adopted the ideas of Preece and Shneidermans frame theory. They have identified 4 major roles in most onlinebased co‐operations and refer to them as reader, contributor, collaborator and leader.

Result: Our results show that the communication in computer supported collaborative works is characterized by positive and energetic communication. The participants are all involved by their own will; they contribute because they want to. We believe this to be the major factor influencing the flow and form of communication between the participants. The majority of posts are comments to other participants or contributing posts that add to the progression of the discourse. We also have reason to believe that the use of smileys and embedded pictures is related to the tools available to the participants; the quicker and easier it is to add a picture the more likely the participants will use these tools.

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Thompson, Linda. "The association between frontal lisping and an anterior open bite, a tongue thrust swallow, the concurrence of an anterior open bite and a tongue thrust swallow and slow diadochokinetic rate." Master's thesis, University of Cape Town, 2006. http://hdl.handle.net/11427/2935.

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Books on the topic "Open throat"

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Larsen, Henrik Legind, José María Blanco, Raquel Pastor Pastor, and Ronald R. Yager, eds. Using Open Data to Detect Organized Crime Threats. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52703-1.

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Purver, Ronald G. Chemical and biological terrorism: The threat according to the open literature. [Ottawa]: Canadian Security Intelligence Service, 1995.

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Office, Canada Privy Council. Address by the Prime Minister in reply to the Speech from the Throne to open the Third Session of the Thirty-Seventh Parliament of Canada. Ottawa: Privy Council Office, 2004.

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Martin, Claude F. A call for new ASW screen geometries for carrier battlegroup open ocean transits under the 1990's threat. Monterey, Calif: Naval Postgraduate School, 1992.

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Borchgrave, Arnaud De. Open source information: The missing dimensionof intelligence : a report of the CSIS Transnational Threats Project. Washington, D.C: CSIS Press, 2006.

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Borchgrave, Arnaud De. Open source information: The missing dimension of intelligence : a report of the CSIS Tansnational Threats Project. Washington, DC: CSIS PRESS, 2006.

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Canada. Prime Minister (2003- : Martin). Address by the Prime Minister in reply to the Speech from the Throne to open the Third Session of the Thirty-Seventh Parliament of Canada. [Ottawa: Office of the Prime Minister, 2004.

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Borchgrave, Arnaud De. Force multiplier for intelligence: Collaborative open source networks : a report of the Transnational Threats Project, Center for Strategic and International Studies. Washington, DC: CSIS, 2007.

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Holmes, Kate. Too good to be threw: The complete operations manual for consignment shops. Columbus, Ohio: Chatham Communicators, 1988.

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Francis, Dick. Second wind. New York: G.P. Putnam's Sons, 1999.

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Book chapters on the topic "Open throat"

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Li, Jin, Ping Li, Zheli Liu, Xiaofeng Chen, and Tong Li. "Threats in Open Environment." In Privacy-Preserving Machine Learning, 75–86. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-9139-3_7.

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Hassan, Nihad A., and Rami Hijazi. "Introduction To Online Threats and Countermeasures." In Open Source Intelligence Methods and Tools, 21–94. Berkeley, CA: Apress, 2018. http://dx.doi.org/10.1007/978-1-4842-3213-2_2.

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Lehr, Peter. "Introduction: Terrorism as a Threat to Open Societies." In Counter-Terrorism Technologies, 1–17. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-90924-0_1.

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Schoo, Peter, and Ronald Marx. "Threat Model Based Security Evaluation of Open Connectivity Services." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 313–22. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-37935-2_24.

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Granata, Daniele, Massimiliano Rak, and Giovanni Salzillo. "Automated Threat Modeling Approaches: Comparison of Open Source Tools." In Communications in Computer and Information Science, 250–65. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-14179-9_17.

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Framis, Andrea Gimenez-Salinas. "Organised Crime as a Framework Concept." In Using Open Data to Detect Organized Crime Threats, 3–23. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52703-1_1.

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Gravett, Bernie. "Operation Golf: A Human Trafficking Case Study." In Using Open Data to Detect Organized Crime Threats, 223–39. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52703-1_10.

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Nitsch, Holger. "Radicalization in a Regional Context: Future Perspective on Possible Terrorist Threats and Radicalization." In Using Open Data to Detect Organized Crime Threats, 241–59. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52703-1_11.

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de la Corte Ibáñez, Luis, and Hristina Hristova Gergova. "Why Do Links Between Terrorism and Crime Increase?" In Using Open Data to Detect Organized Crime Threats, 261–79. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52703-1_12.

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Pascual, Daniel Sansó-Rubert. "Measuring Organised Crime: Complexities of the Quantitative and Factorial Analysis." In Using Open Data to Detect Organized Crime Threats, 25–44. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52703-1_2.

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Conference papers on the topic "Open throat"

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Ferlauto, Michele, and Roberto Marsilio. "Open and Closed-Loop Responses of a Dual-Throat Nozzle during Fluidic Thrust Vectoring." In 52nd AIAA/SAE/ASEE Joint Propulsion Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2016. http://dx.doi.org/10.2514/6.2016-4504.

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Nelson, E. B., J. D. Paduano, and A. H. Epstein. "Active Stabilization of Surge in an Axi-Centrifugal Turboshaft Engine." In ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/99-gt-438.

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Active stabilization of surge was implemented on an Allied Signal LTS-101 axi-centrifugal gas producer, reducing the surging mass flow by 1%, for an operating range increase of 11%. Control was achieved using high response sensors in the inlet and diffuser throat, coupled to actuators that injected air near the diffuser throat. System identification and modeling indicate that a classical surge-type eigenmode and an eigenmode associated with engine duct acoustics dominate the engine’s input-output properties. The surge eigenmode’s stability determines the open-loop surge mass flow. A robust linear controller with three inputs and one output stabilized this eigenmode without destabilizing the acoustic mode. The controller facilitated a 1% reduction in surging mass flow at 95% N1 corrected; this increases the engine’s choke to surge stable operating range by 11%. This paper elucidates the measured unsteady pre-surge behavior of the engine, and outlines a systematic procedure for surge control law development.
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Ramiro-Ramirez, Sebastian, Peter B. Flemings, Athma R. Bhandari, and Oluwafemi Solomon Jimba. "Steady-State Liquid Permeability Measurements in Samples from the Bakken Formation, Williston Basin, USA." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/206382-ms.

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Abstract We measured steady-state liquid (dodecane) permeability in four horizontal core plugs from the middle member of the Bakken Formation at multiple effective stress conditions to investigate how permeability evolves with confining stress and to infer the matrix permeability. Three of the four tested samples behaved almost perfectly elastically as the hysteresis effect was negligible. In contrast, the fourth sample showed a permeability decrease of ~40% at the end of the test program. Our interpretation is that the closure of open artificial micro-fractures initially present in the sample (based on micro-CT imaging) caused that permeability hysteresis. The matrix permeability to dodecane (oil) of the tested samples is between ~50 nD and ~520 nD at the confining pressure of 9500 psi. The 520 nD sample exhibited the lowest porosity, the highest calcite content, and the largest dominant pore throat radii. In contrast, the 50 nD sample was more porous, and exhibited the highest dolomite content and the smallest dominant pore throat radii. This study shows that our multi-stress testing protocol allows the study of the permeability hysteresis effect to interpret the matrix permeability. We also document the presence of middle Bakken lithologies with permeabilities up to one order of magnitude greater than others. These permeable lithologies may have a significant contribution to well production rates.
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Tiseira, Andrés, Luis Miguel García-Cuevas, Lukas Benjamin Inhestern, and Juan David Echavarría. "Numerical Simulation of a Radial Turbine at Off-Design Conditions in Presence of Choked Flow." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-14902.

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Abstract In the application of turbocharging and organic Rankine cycles (ORCs) the radial turbine can operate at high pressure ratio leading to the presence of choking inside the turbine. Information in this map region is needed to estimate the overall machine performance and to achieve an optimum matching of engine-turbocharger or an integration into ORCs. As a preliminar study before doing experimental tests in a turbocharger gas stand and before starting modeling activities, 3D CFD simulations were run for this paper. The occurrence of choking in the stator passage, in the vaneless space and in the rotor passage is categorized and analyzed under different operating conditions and VGT openings. The appearance of the shock wave depends strongly of the stator vane position and pressure ratio. In the analyzed turbocharger VGT turbine no choking has been identified in the throat of the stator vanes. In technically relevant closed VGT position choking was identified in the vaneless space. Whereas at open vane position the shock wave appears at the rotor throat and the Mach number can increase from the blade tip to the hub or from the hub to the tip depending on the rotational speed. Furthermore, tip leakage flow plays an important role, being responsible of subsonic regions in the rotor outlet although a big percentage of the section is choked.
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Erol, Nazim, Xin Shan, and Onur Bilgen. "An Equivalent Circuit Model for the Reconfigurable Ducted Turbine Array Concept." In ASME 2022 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/smasis2022-91270.

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Abstract The reconfigurable ducted turbine array concept is an energy harvesting method proposed to reduce the so-called levelized cost of energy extracted from naturally occurring flows (e.g., from wind and water currents.) Duct augmentation is proposed to achieve higher power coefficient than the Betz limit for open turbines, among other (e.g., structural) reasons. Ducted or shrouded hydrokinetic turbines with a contracted throat area can be used to eliminate blade tip vortex, and to potentially increase the flow velocity at the rotor cross-section, consequently speeding up the rotor to improve electro-magnetic efficiency. In a recent paper by the authors, an equivalent circuit model for a single duct was proposed to understand the effects of geometric design variables of the duct. These variables are contraction ratio, aspect ratio, hub-to-throat ratio, etc. The parameterized circuit model was used to study the flow behavior of the ducted geometry in terms of equivalent resistances. The current paper presents an extended equivalent circuit model by adding the effects of turbulence, gravity, and hydrostatic pressure. The unknown parameters of the equivalent circuit model are identified using three-dimensional computational fluid dynamics simulations, and by curve fitting using the least squares method. The circuit model is then used to identify design variables that result in desirable flow behavior from duct augmentation.
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Alyafei, Nayef, Muhammad Farooq Zia, and Harris Rabbani. "A Visual-Learning Project to Enhance the Understanding of Petrophysical Properties Using Pore-Scale Simulation." In SPE Annual Technical Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/210237-ms.

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Abstract This paper aims to showcase a visual-learning project to enhance the understanding of petrophysical concepts through the use of pore-scale flow simulation. Open-source Field Operation and Manipulation (OpenFOAM) is used to simulate fluid flow through six unique pore structures and postprocessing of numerical results was conducted using Paraview. The images and data of each flow sequence (drainage and imbibition) is captured and available for analysis. In this paper, we discuss how each parameter is used and calculated. The data to calculate are porosity, fluid saturation, throat size distribution, capillary pressure, and relative permeability. The data of this project is open access and can be adopted by any institution. The project utilizes six cases where it enables visual demonstrations of both drainage and imbibition and highlights the effects of pore geometry over each of these processes. The students use open-access image analysis software to analyze the image output from the simulation data and calculate the properties above. Providing students with strong visual cues to otherwise abstract multiphase fluid processes occurring within hydrocarbon reservoirs strongly enhances their learning process. The project provides a unique learning experience to enhance the understanding of petrophysical concepts. The visual elements of this project make the understanding of the microscopic processes much simpler and more engaging. All the data associated with this project will be open access.
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Kudriavtsev, Vladimir, Satoyuki Kawano, T. Isoyama, H. Arai, T. Yambe, Y. Abe, K. Imachi, S. Nitta, and H. Hashimoto. "Numerical Study on Fluid-Structure Interaction in VFP Artificial Heart With Jelly-Fish Valve." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45114.

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We analyze sinusoidal pulsating flow that develops in the vibrating flow pump (VFP) artificial heart casing. In such system flow is induced by the axial movements of the vibrating pipe. Pipe is capped with the flexible thin disk that is called jelly-fish valve (JFV). Valve is opened during the downward pipe motion and is closed during the upward motion. Valve movement is very similar with the movement of falcon wings. It is due to the pipe motion and happens under the influence of fluid inertial, JFV spring, fluid shear and pressure forces. Authors utilized industrial strength CFD-ACE+/FEMSTRESS software package from CFDRC to analyze dynamic fluid-structure interaction, flow velocity field and time-dependent vorticity distribution. It was shown in the previous studies that blood hemolysis is closely correlated with the maximum values of vorticity fianction ω. In the paper we analyzed valve deformation, related flowfield and vorticity at different transient flow conditions. We can clearly conclude that dynamic formulation allows us to estimate and pinpoint with much greater accuracy the local maxima in vorticity. Vorticity peaks in two areas. First zone is at valve/pipe throat and second zone is at the casing throat. Vorticity is highest at the casing wall, thus pointing the direction for design improvements. Reduction in JFV stiffness helps to open valve wider and to reduce flow vorticity in its vicinity. These are work-in-progress results and additional studies will follow.
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Sun, Zhe, Xiujun Wang, and Xiaodong Kang. "The New Development of Soft Microgel Particle Flooding Technology –From Theoretical Research in Laboratory to Field Trial." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/205911-ms.

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Abstract Although polymer flooding technology has been widely applied and achieved remarkable effect of increasing oil. Yet the "entry profile inversion" phenomenon occurs inevitably in its later stage, which seriously affects the development effect. In recent years, the soft microgel particle dispersion is a novel developed flooding system. Due to its excellent performance and advanced mechanism, it can slow down the process of profile inversion, and achieve the goal of deep fluid diversion and expanding swept volume. The soft microgel particle dispersion consists of microgel particles and its carrier fluid. After coming into porous media, it shows the properties of "plugging large pore and leave the small one open" and the motion feature of "trapping, deformation, migration". In this paper, reservoir adaptability evaluation, plugging and deformation characteristics of soft microgel particle dispersion in pore throat is explored by using the microfluidic technology and 3D Printing technology. On this basis, by adopting the NMR and CT tomography technology, the research on its oil displacement mechanism is further carried out. Furthermore, the typical field application case is analyzed. Results show that, soft microgel particles have good performance and transport ability in porous media. According to the reservoir adaptability evaluation, the size relationships between particles and core pore throat is obtained, to provide basis for field application scheme design. Through microfluidic experiments, the temporary plugging and deformation characteristics of particles in the pore throat are explored. Also, when injecting soft microgel particle into the core, the particle phase separation happens, which makes the particles enter and plug the large pore in the high permeability layer. Therefore, their carrier fluid displace oil in the small pore, which works in cooperation and causes no damage to the low permeability layer. Furthermore, by using NMR and CT techniques, its micro percolation law in porous media and remaining oil distribution during displacement process is analyzed. During the experiment, microgels presents the motion feature of "migration, trapping, and deformation" in the core pore, which can realize deep fluid diversion and expand swept volume. From 3D macro experiment, microgels can realize the goal of enhance oil recovery. Finally, the soft microgel particle dispersion flooding technology has been applied in different oilfields, such as Oman, Bohai and other oilfields, which all obtained great success. Through interdisciplinary innovative research methods, the oil displacement mechanism and field application of soft microgel particle dispersion is researched, which proves its progressiveness and superiority. The research results provide theoretical basis and technical support for the enhancing oil recovery significantly.
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Chalet, David, Pascal Chesse, Jean-Franc¸ois Hetet, and Xavier Tauzia. "Some Basic Elements to Achieve a Future 1D Simulation of Wave Propagation in I.C.E. Pipes." In ASME 2002 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ices2002-449.

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The assumption of one-dimensional unsteady flows in the inlet and exhaust systems of turbocharged diesel engines is widely used although multi-dimensional simulations using fluid dynamics are also possible. However, difficulties persist concerning the boundary conditions, particularly at the pipe ends (inflow or outflow) and at the intra-pipe boundary conditions (sudden or gradual area changes, bends, junctions, etc.). This paper focuses on the two first steps leading to a 1D flow simulation code: the selection of a numerical scheme and the study of an open end boundary condition. The first section compares several numerical algorithms, including Lax-Wendoff, Flux-Corrected-Transport methods (FCT), and Harten-Lax-Leer (Riemann solver), extended to the second order. The selection criterion is the best compromise between numerical instabilities and computational time. A numerical study using the Fluent CFD code is then presented on a constant area duct in order to determine some characteristics at the pipe end, specifically the dead zone length and the throat area. Finally, a model parameterized by the pressure ratio between inlet and outlet is proposed.
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Levina, Alla, Pavel Borisenko, and Roman Mostovoy. "SCA as mobile security threat." In 2017 20th Conference of Open Innovations Association (FRUCT). IEEE, 2017. http://dx.doi.org/10.23919/fruct.2017.8071317.

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Reports on the topic "Open throat"

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Barbir, A., O. Batuner, B. Srinivas, M. Hofmann, and H. Orman. Security Threats and Risks for Open Pluggable Edge Services (OPES). RFC Editor, August 2004. http://dx.doi.org/10.17487/rfc3837.

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Mortensen, A., T. Reddy, and R. Moskowitz. DDoS Open Threat Signaling (DOTS) Requirements. RFC Editor, May 2019. http://dx.doi.org/10.17487/rfc8612.

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Andreasen, F., N. Teague, and R. Compton. DDoS Open Threat Signaling (DOTS) Architecture. Edited by A. Mortensen and T. Reddy.K. RFC Editor, August 2020. http://dx.doi.org/10.17487/rfc8811.

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Boucadair, M., and T. Reddy.K. DDoS Open Threat Signaling (DOTS) Agent Discovery. RFC Editor, January 2021. http://dx.doi.org/10.17487/rfc8973.

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Dobbins, R., D. Migault, R. Moskowitz, N. Teague, L. Xia, and K. Nishizuka. Use Cases for DDoS Open Threat Signaling. RFC Editor, May 2021. http://dx.doi.org/10.17487/rfc8903.

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Doron, E., M. Chen, and J. Shallow. Distributed Denial-of-Service Open Threat Signaling (DOTS) Telemetry. Edited by M. Boucadair and T. Reddy.K. RFC Editor, June 2022. http://dx.doi.org/10.17487/rfc9244.

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Boucadair, M., T. Reddy.K, and W. Pan. Multihoming Deployment Considerations for DDoS Open Threat Signaling (DOTS). RFC Editor, August 2022. http://dx.doi.org/10.17487/rfc9284.

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Patil, P., A. Mortensen, and N. Teague. Distributed Denial-of-Service Open Threat Signaling (DOTS) Signal Channel Specification. Edited by T. Reddy.K and M. Boucadair. RFC Editor, May 2020. http://dx.doi.org/10.17487/rfc8782.

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Boucadair, M., and T. Reddy.K, eds. Distributed Denial-of-Service Open Threat Signaling (DOTS) Data Channel Specification. RFC Editor, May 2020. http://dx.doi.org/10.17487/rfc8783.

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Shallow, J., and T. Reddy.K. Distributed Denial-of-Service Open Threat Signaling (DOTS) Signal Channel Specification. Edited by M. Boucadair. RFC Editor, September 2021. http://dx.doi.org/10.17487/rfc9132.

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