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Artykuły w czasopismach na temat "Receivers and reception"

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Al-Anbagi, Haidar N., i Ivo Vertat. "Cooperative Reception of Multiple Satellite Downlinks". Sensors 22, nr 8 (8.04.2022): 2856. http://dx.doi.org/10.3390/s22082856.

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Popular small satellites host individual sensors or sensor networks in space but require ground stations with directional antennas on rotators to download sensors’ data. Such ground stations can establish a single downlink communication with only one satellite at a time with high vulnerability to system outages when experiencing severe channel impairments or steering engine failures. To contribute to the area of improving the reception quality of small satellites signals, this paper presents a simple receive diversity scheme with proposed processing algorithms to virtually combine satellite downlink streams collected from multiple omnidirectional receivers. These algorithms process multiple received versions of the same signal from multiple geographically separated receiving sites to be combined in one virtual ground station. This virtual ground station helps detect the intended signal more reliably based only on a network of simple and cooperating software-defined radio receivers with omnidirectional antennas. The suggested receive diversity combining techniques can provide significant system performance improvement if compared to the performance of each individual receiving site. In addition, the probability of system outages is decreased even if one or more sites experience severe impairment consequences. Simulation results showed that the bit error rate (BER) of the combined stream is lower than the BER of the best quality receiving site if considered alone. Moreover, virtual ground stations with cooperative omnidirectional reception at geographically separated receivers also allow data to be received from multiple satellites in the same frequency band simultaneously, as software-defined receivers can digitize a wider portion of the frequency band. This can be a significant conceptual advantage as the number of small satellites transmitting data grows, and it is reasonable to avoid the corresponding necessary increase in the number of fully equipped ground stations with rotators.
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Stamm, Raini, Meelis Stamm, Jarek Tigane i Reeda Tuula. "Individual proficiency of reception by the Estonian men’s national team at the qualification tournament of the European Championship". Papers on Anthropology 28, nr 1 (17.06.2019): 111–25. http://dx.doi.org/10.12697/poa.2019.28.1.09.

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The aim of the study was to analyse players’ individual proficiency at serve reception and its influence on the following attack in the Estonian national team during the qualification for the European Championship in 2016. The subjects were the players of Estonian national volleyball team during the qualification for the European Championship in 2016. To collect data, video recordings of eight games of the Estonian national team were viewed; the number serve receptions, type and zone of reception and proficiency were registered. In addition, the number of attacks following serve reception, their zone, performer and proficiency were recorded. The results revealed that success at the reception of serve influences the proficiency of attack. At more successful reception, the proficiency of attack was higher than at poorer reception. As a result of the study, it was shown that serve reception by the Estonian team was more proficient in sets won than in sets lost. In the case of more successful reception, the Estonian national volleyball team was more proficient at attack than in the case of less proficient reception. When types of reception were compared, the receivers of the Estonian national team were most proficient at reception from above. The receivers of the Estonian national received the serve best in zone 5.
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Ren, Weijie, Jianfeng Sun, Haisheng Cong i Yuxin Jiang. "Sensitivity Deterioration of Free-Space Optical Coherent/Non-Coherent OOK Modulation Receiver by Ambient Light Noise". Sensors 23, nr 4 (14.02.2023): 2140. http://dx.doi.org/10.3390/s23042140.

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In free-space optical (FSO) communication systems, on–off keying (OOK) is a widely used modulation format. Coherent and non-coherent OOK receivers with sensitivities of −54.60 dBm and −51.25 dBm, respectively, were built with a communication rate of 1 Gbit/s and a bit error rate of 10−3. In an FSO communication system, the parameters must be designed to ensure a sufficient link margin. In contrast to optical fiber systems, FSO systems have ambient light (AL) noise such as sunlight. The efficiency of sunlight coupling in the single-mode fiber (SMF) of the receivers was calculated in this study. For a signal light with AL, the change in the main components of noise and the sensitivity deterioration were theoretically analyzed and experimentally verified in conditions of coherent reception and non-coherent reception with a preamplifier. For coherent reception, the theoretical sensitivity deterioration results are consistent with the experimental results which indicate that coherent reception exhibits better anti-AL noise performance than non-coherent reception when the power spectral density of the AL is the same. Coherent and non-coherent receivers coupled with SMF can work in direct sunlight. When the receiver lens diameter is greater than 4.88 × 10−4 m, the anti-AL noise performance of the receiver can be improved by increasing the receiver lens diameter.
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Lapinski, Anna-Liesa S., i Anthony W. Isenor. "Estimating Reception Coverage Characteristics of AIS". Journal of Navigation 64, nr 4 (12.09.2011): 609–23. http://dx.doi.org/10.1017/s0373463311000282.

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The Automatic Identification System (AIS) is now well established and widely used in commercial shipping. The system originated from a safety mandate but AIS messages have also been shown to be useful from a security situational awareness perspective. In terms of coastal security, AIS messages are often received by land-based receivers positioned along a nation's coastline. The operational range of the receivers is controlled by complex variable VHF propagation characteristics, power of the transmitter, etc. However, certain characteristics of the reception coverage area can be determined from the AIS message receptions themselves. This paper presents an algorithm to compute coverage characteristics using AIS messages. The algorithm is applied to synthetic data with known coverage characteristics, and also real AIS data obtained from the Maritime Safety and Security Information System. Results from the Norwegian, North and Baltic Seas show how the coverage estimate is influenced by the coverage edge, lack of vessel activity, and diversity in the source data.
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Huang, Yang, Xinyi Zheng, Yufei Guo i Shiming Gao. "Performance Improvement of the Free-Space Optical Communication Link Using Spatial Diversity Reception-Assisted OFDM Signals". Applied Sciences 12, nr 14 (6.07.2022): 6828. http://dx.doi.org/10.3390/app12146828.

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Orthogonal frequency division multiplexing (OFDM) technology is presented for use in free-space optical (FSO) communications accompanied by the spatial diversity reception. Using quadrature phase shift keying (QPSK) modulation formats, the OFDM signals show robustness to support high spectral efficiency and compatibility with the spatial diversity reception to improve receiver sensitivity. Compared with the single-carrier QPSK signal, the OFDM-QPSK signal with 64 sub-carriers can reduce the BER from 2.87 × 10−3 to 2.98 × 10−4 at the SNR of 6 dB. Using a two-aperture spatial diversity reception with OFDM, the BER can be reduced from 2.45 × 10−3 of a single receiver to 6.10 × 10−4 under moderate turbulence conditions. Under strong turbulence, the BER of the single receiver is 2.14 × 10−2. It can be improved to 1.16 × 10−3 by using four-aperture receivers, and even 6.87 × 10−4 by using six-aperture receivers. The optimized aperture number should be selected according to channel conditions.
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Brodin, G. J., J. A. Cooper i J. R. A. Stevens. "Measuring the effect of helicopter rotors on GPS reception". Aeronautical Journal 111, nr 1123 (wrzesień 2007): 561–70. http://dx.doi.org/10.1017/s0001924000001834.

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Abstract This paper describes an experiment which was performed using an offshore transport helicopter to investigate the impact of the rotor blades upon Global Positioning System (GPS) reception. The test aircraft was fitted with two separate GPS antennas which were positioned to isolate the effects caused by the main and tail rotors. Testing was undertaken with the aircraft on the ground and this allowed an assessment to be performed at different rotor speeds with accurate control over the relative geometry between the antenna, rotors and satellites. Recorded data from a measurement system incorporating three dissimilar GPS receivers (including a technical standard order (TSO)-C129() compliant aviation unit and a custom research receiver) was analysed to identify the effect of the rotors at the correlator level and to determine the impacts upon ranging accuracy, the availability of ranging measurements, and the receivers’ signal level estimates. Correlation data was used to demonstrate that the rotor blades were capable of generating both destructive and constructive interference effects, and the periodic nature of these oscillations was shown to correspond directly to the blade passing frequency. It was identified that signal degradation was not limited to satellite signal paths which intersected the rotor discs. No evidence was found for any increase in code measurement error due to the rotor interference, but it was demonstrated that there could be a significant impact upon a receiver’s ability to maintain continuous tracking of the satellite signals. The overall effect of this availability problem for a given installation and type of operation will be dependent upon satellite geometry and other factors which are beyond the scope of this study. The ability of a receiver to identify the presence of rotor interference was investigated by examining estimates of carrier-to-noise, and this revealed inconsistencies between the results from different receivers implying differences in the estimation algorithms employed. It was also identified that two alternative ‘textbook’ estimators do not give identical results in the presence of rotor interference and it is suggested that such data should therefore be interpreted with caution.
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Kousa, M. "Enhancement of RAKE receivers for ultra-wideband reception". IET Communications 2, nr 3 (2008): 422. http://dx.doi.org/10.1049/iet-com:20070061.

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Milosavljević, Srđan, Dejan Milić, Slaviša Trajković, Petar Spalević i Bojana Milosavljević. "LEVEL CROSSING RATE OF MACRODIVERSITY OUTPUT PROCESS IN THE PRESENCE OF η-μ SHORT TERM FADING AND GAMMA LONG TERM FADING". Facta Universitatis, Series: Automatic Control and Robotics 16, nr 2 (24.10.2017): 157. http://dx.doi.org/10.22190/fuacr1702157m.

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In this paper macrodiversity reception with macrodiversity selection combining (SC) receiver and two microdiversity MRC receivers operating over shadowed multipath fading channel is studied. Received signal experiences short term fading and correlated Gamma long term fading resulting in system performance degradation. Level crossing rate (LCR) of η-μ random process and level crossing rate of signals at outputs of microdiversity MRC receivers are efficiently calculated. By using these derived formulas, level crossing rate of macrodiversity SC receiver output signal process is calculated. By using this result, average fade duration (AFD) of the proposed wireless communication system can be calculated. The influence of η-μ short term fading severity parameter, Gamma long term fading severity parameter and Gamma long term correlation coefficient on level crossing rate is analysed and studied.
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Zhang, Bo, Christian Malouin i Theodore J. Schmidt. "Towards full band colorless reception with coherent balanced receivers". Optics Express 20, nr 9 (19.04.2012): 10339. http://dx.doi.org/10.1364/oe.20.010339.

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Ibrahim, M. M., i A. M. Ibrahim. "Performance analysis of optical receivers with space diversity reception". IEE Proceedings - Communications 143, nr 6 (1996): 369. http://dx.doi.org/10.1049/ip-com:19960885.

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Rozprawy doktorskie na temat "Receivers and reception"

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Ni, Chih-Hwa. "Signal Reception Via Multi-Platform Receivers". Thesis, Monterey, California. Naval Postgraduate School, 2012. http://hdl.handle.net/10945/17428.

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In this thesis a reference-based successive interference cancellation (RSIC) scheme is proposed for mitigating interference in multi-platform communications. The performances of two RSIC techniques (Non-Demodulated and Demodulated) for quadrature phase shift keying (QPSK) modulation in orthogonal frequency division multiplexing (OFDM) system are analyzed. Simulations show RSIC schemes give considerable increase in performance compared to a system where interference cancellation is not utilized.
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Hamilton, Terry. "Upgrade of RCB Receivers for C-Band Reception". International Foundation for Telemetering, 2009. http://hdl.handle.net/10150/606035.

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ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, Nevada
Existing telemetry ground receivers typically operate in a bandwidth between 215MHz to 2485MHz, while the new C-Band covers 4.4GHz to 5.15GHz. Additionally, some installations are choosing to incorporate down converters in the antenna as an alternate approach. This paper describes an innovative approach to solving all of these problems, by enhancing the capabilities of existing range assets. The plan is to upgrade existing fielded receivers without impacting their existing functionality to also include C-Band reception. The upgrade module along with the software revision will provide the user with a fully functional receiver in the existing bands and the newly added bands. This will be accomplished by the development of an advanced down converter sections with coverage across all bands that will replace existing modules within the telemetry receivers. It is the details of this development that will be presented.
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Banciu, Marian Gabriel Electrical Engineering &amp Telecommunications Faculty of Engineering UNSW. "Radio frequency and microwave design methods for mobile communications". Awarded by:University of New South Wales. School of Electrical Engineering and Telecommunications, 2003. http://handle.unsw.edu.au/1959.4/18814.

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The Global System for Mobile communications (GSM), which covers 54% of the world's mobile market, evolved into the General Packet Radio Service (GPRS). The thesis addresses interference suppression using new radio frequency (RF) and microwave design methods for GSM and GPRS. The overall outcome is interference reduction and enhanced network capacity, leading to superior quality of service (QoS) for wider area coverage. The main results can be summarized as follows * Design, manufacturing and characterisation measurements of new compact filters for GSM and GPRS base stations in order to reduce the out-of-band interference. It is shown that filters with novel microstrip resonators - dual mode filters and cross coupled filters - provide both a high degree of miniaturisation and narrow bandwidth. * Development of a new 3-D Finite-Difference Time-Domain (FDTD) design method for new microstrip filters. A non-homogeneous Perfectly Matched Layer (NH-PML) was implemented for Absorbing Boundary Conditions (ABC) to increase the accuracy of the FDTD method. Signal estimation techniques were developed to speed up FDTD computations. A novel design method based on neural networks (NN) and FDTD was implemented to reduce the total design time. * Investigation of High Temperature Superconductors (HTS) thin film resonators and antennas at microwave frequencies. High Q-factor HTS devices considerably enhance both the front-ends sensitivity and selectivity of wireless receivers. * Design, manufacturing and testing of radio frequency (RF) electronics for 16 elements GSM and GPRS Smart Antenna for multipath fading mitigation and for in-band interference including co-channel interference (CCI) suppression.
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Kellerman, Valpre Cecilia. "Modular approach to the development of a two-way radio receiver system". Thesis, Stellenbosch : University of Stellenbosch, 2004. http://hdl.handle.net/10019.1/16362.

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Thesis (MScIng)--University of Stellenbosch, 2004.
ENGLISH ABSTRACT: The preliminary development of a FM radio receiver module is discussed. An existing narrowband system operating between 48MHz and 50MHz will be replaced. Digital components were investigated, compared and used with analogue techniques to build a more flexible two-way radio receiver system. A direct digital synthesizer was considered as a replacement for the current synthesized phased lock loop local oscillator and much attention was given to the local oscillator and mixer design, characteristics and measurement procedures. A detailed study of receiver systems was undertaken to determine the specifications needed for every receiver component to achieve satisfactory receiver performance in the end. Receiver characteristics as well as receiver measurement procedures are defined. A software tool was developed to aid the design process, establishing computationally whether the receiver specifications are met prior to the final design. The complete design process, from fundamental specifications through to the developed final receiver module is discussed. A modular design approach was used to guarantee easy manufacturing, substitution and testing. This approach comprises the break-down of the receiver into well defined components that are each matched to 50O. The separate components of the system were designed, measured and characterized to make it possible to replace only a single component instead of the entire system when a part becomes redundant.
AFRIKAANSE OPSOMMING: Die grondslag vir die ontwikkeling van ‘n FM radio ontvanger module word in hierdie dokument gelê. ‘n Bestaande noubandstelsel wat tussen 48MHz and 50MHz ontvang word vervang deur hierdie nuwe stelsel wat aangewend sal kan word in die bestaande tweerigtingradio se omhulsel. Digitale komponente is ondersoek, vergelyk en gebruik saam met analoogtegnieke om ‘n meer buigsame radiostelsel te bewerkstellig. ‘n Direkte digitale sintitiseerder is oorweeg as ‘n vervanging vir die huidige fasesluitlus ossillator met heelwat klem op die oscillator-en mengerontwerp, komponent spesifikasies en metingsprosedures. ‘n Diepgaande studie van ontvangerstelsels is gedoen om te bepaal wat die tipiese spesifikasies vir elke ontvangerstadium is, sodat die finale ontvanger se spesifikasies behaal kan word. Ontvanger eienskappe en meetprosedures word volledig gedefinieer. ‘n Sagtewareprogram is ontwikkel om die ontvanger-ontwerpsproses te vergemaklik deur vooraf te kan vasstel watter ontvangerspesifikasies bereik sal kan word al dan nie. Die volledige ontwerpsproses, vanaf fundamentele spesifikasies tot by die finale ontvanger word omskryf. ‘n Modulere-ontwerp prosedure is gebruik ter versekering van die maklike vervaardiging, vervanging en toetsing van elke komponent. Die radio is tydens ontwerp opgebreek in boublokkies wat elkeen aangepas word na 50O. Elke aparte boublokkie van die ontvangerstelsel is afsonderlik ontwerp, gemeet en volledig gespesifiseer om dit moontlik te maak om slegs een komponent te vervang in plaas van die hele stelsel wanneer ‘n enkele komponent nie meer beskikbaar is nie.
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Green, David Robert. "M-Net decoder production : a technical analysis". Thesis, Cape Technikon, 1989. http://hdl.handle.net/20.500.11838/1130.

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Thesis (Masters Diploma (Technology))--Cape Technikon, Cape Town, 1989
The document initially describes the operation of the decoder and the production system. Thereafter actual engineering problems are stated and their solutions discussed. The project involves the accurate identification of problem areas on the production line and the systematic solving for each case. Subjects include static electricity pretesting and automatic insertion machine defects. Analysis of these problems provides one with a better perspective towards the production line and its inherent problems. Results and solutions are presented photographically as well as tabulated in the annexure. In some cases, such as defect classification, deductions were concluded that were very different from those initially expected.
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Tidwell, Steve Chase 1957. "DESIGN OF A 5X AFOCAL RELAY LENS FOR A HETERODYNE SYSTEM (LASER)". Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/291288.

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Yeung, Kim-sang, i 楊儉生. "The design and multiplier-less realization of a novel digital IF for software radio receivers". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B2946660X.

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Nel, Christoffel Antonie. "The creation of nonlinear behavioral-level models for system level receiver simulation". Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/50128.

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Thesis (MScEng)--Stellenbosch University, 2004.
ENGLISH ABSTRACT: The aim of this thesis was to investigate the use of behavioral level models in receiver simulations using the capabilities of Agilent's Advanced Design System. Behavioral level modeling has become increasingly attractive because it offers faster and easier results for system level simulations. The work in this thesis focused strongly on nonlinear measurements to characterize the various nonlinear phenomena that are present in amplifiers and mixers. Measurement automation software was developed to automate the process. An error correction technique was also developed to increase the accuracy of spectrum analyzer measurements. The measured data was used to implement the behavioral level amplifier and mixer models in ADS. The accuracy of the models was compared to measured data and the different available models were compared. Finally the models were combined to realize different receivers and were used to do typical receiver tests. These test include gain and gain compression, two-tone intermodulation and spurious responses. The results are compared to measured data to test the accuracy and usefulness of the models and simulation techniques.
AFRIKAANSE OPSOMMING: Die doel van hierdie tesis was om stelsel-vlak gedrags-modelle te ondersoek soos hulle in Agilent se Advanced Design System (ADS) aangebied word. Die modellering van die stelselvlak-gedrag van komponente en stelsels is aantreklik aangesien dit 'n hoë vlak beskrywing van komplekse kommunikasie stelsels moontlik maak. Akkurate stelsel-vlak simulasies sal lei tot vinnige ontwikkeling en evaluasie van nuwe sisteme. Die resultate wat verkry word is egter afhanklik van die beskikbaarheid van akkurate stelsel-vlak gedragsmodelle Die tesis het baie sterk op metings staat gemaak om die nie-liniêre gedrag van versterkers en mengers te karakteriseer. Meet sagteware is ontwikkel om die verskillende metings te automatiseer. Fout korreksie vir spetrum-analiseerder-metings is ook ontwikkel. Die gemete data is gebruik om die nie-liniêre gedrags-modelle in ADS te implementer. Die modelle is in simulasies gebruik en die akuraatheid van die simulasies is teen gemete data getoets. Die finale deel van die tesis gebruik die modelle om tipiese ontvanger karakteristieke te voorspel. Die volgende toetse is gedoen: aanwins en kompressie, twee-toon intermodulasie en hoer orde meng produkte. Die resultate van die toetse is met gemete data vergelyk om die akuraatehied en bruikbaarheid van die verskillende modelle te vergelyk.
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Hawbaker, Dwayne Allen. "Indoor wide band radio wave propagation measurements and models at 1.3 ghz and 4.0 ghz". Thesis, Virginia Tech, 1991. http://hdl.handle.net/10919/44287.

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An extensive radio wave propagation measurement campaign was conducted at 1.3 GHz and 4.0 GHz inside four buildings, including a sports arena, a modern closed-plan office building, and two dissimilar, open-plan factories. Measurements were recorded at 57 locations using base station antenna heights of 1.7 meters and 4.0 meters. Results were obtained for mean and maximum excess delay, rms delay spread, time delay jitter, differential delay jitter, and path loss through analyses of impulse response estimates, which were obtained via repetitive 5 ns probing pulses. The effects of frequency, antenna height, topography (line-of-sight or obstructed direct path), and building environment on delay spread and path loss are quantified. Results indicate that, on average, the frequencies and antenna heights used in this study have minimal impact on rms delay spread and path loss. However, topography and building environment significantly affect these parameters. RMS delay spread values as high as 230 ns were observed in open plan factories. Computed path loss power law exponents are 1.84 and 2.35 for line-of-sight and obstructed topographies, respectively. A second campaign was conducted to determine the effects of antenna directivity and polarization on propagation parameters. On average, line-of-sight indoor channels offer 8 dB of cross-polarization discrimination, whereas obstructed environments offer less than 3 dB. Directional antennas provide a significant reduction in rms delay spread over omni-directional antennas. In line-of-sight environments, circular polarization provides an additional delay spread reduction.
Master of Science
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Schaubach, Kurt Richard. "Microcellular radio channel prediction using ray tracing". Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-09122009-040308/.

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Książki na temat "Receivers and reception"

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Television receivers. Burnt Mill, Harlow, Essex, England: Longman Scientific & Technical, 1992.

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1932-, Gosling W., red. Radio receivers. London, U.K: P. Peregrinus on behalf of the Institution of Electrical Engineers, 1986.

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C, Whitaker Jerry, red. Television receivers. New York: McGraw-Hill, 2001.

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Fred, Osterman, red. Shortwave receivers past and present: Communications receivers, 1942-1997. Wyd. 3. Reynoldsburg, Ohio: Universal Radio Research, 1998.

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Televisions. Edina, Minn: ABDO, 2009.

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Case, John. Practical receivers for beginners. Potters Bar: Radio Society of Great Britain, 1996.

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Carr, Joseph J. The technician's radio receiver handbook: Wireless and telecommunication technology. Boston: Newnes, 2001.

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Goldstein, Mark L. Digital television: On the threshold. New York: Nova Science Publishers, 2008.

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C, Dixon Robert. Radio receiver design. New York: Marcel Dekker, 1998.

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Fred, Osterman, red. Shortwave receivers past and present: Communications receivers, 1945-1996. Wyd. 2. Reynoldsburg, Ohio: Universal Radio Research, 1997.

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Części książek na temat "Receivers and reception"

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Doberstein, Dan. "GPS Time and Frequency Reception". W Fundamentals of GPS Receivers, 135–66. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0409-5_8.

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Logvinov, Vasiliy V., i Sergey M. Smolskiy. "Technical Indicators of Devices for Signal Reception and Processing". W Radio Receivers for Systems of Fixed and Mobile Communications, 247–83. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-76628-3_5.

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Lehtipuu, Outi. "“Receive the Widow Judith, Example of Chastity”: The Figure of Judith as a Model Christian in Patristic Interpretations". W Biblical Women in Patristic Reception / Biblische Frauen in patristischer Rezeption, 186–219. Göttingen: Vandenhoeck & Ruprecht, 2017. http://dx.doi.org/10.13109/9783666552700.186.

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Olsson, Lovisa. "Guests or Strangers? The Reception of Visiting Merchants in the Towns of the Baltic Rim, 1515–1559". W Baltic Hospitality from the Middle Ages to the Twentieth Century, 143–66. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-98527-1_6.

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AbstractLong-distance trade brought merchants, skippers, and other visiting traders to the early modern towns of the Baltic rim. This chapter explores how they were received in the visited towns through the court protocols from the towns of Lübeck, Malmö, Stockholm, and Reval covering the period 1515–1559. A spatial perspective on the reception of merchants and traders shows that the level of hospitality granted to visitors depended on their perceived trustworthiness and social standing. The view on visiting traders was conflicted, as they simultaneously offered possibilities for lucrative trade and posed a perceived threat to the social order of the early modern towns.
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Méndez Baiges, Maite. "Introduction. An Archaeology of Modernism". W Les Demoiselles d'Avignon and Modernism, 11–22. Florence: Firenze University Press, 2022. http://dx.doi.org/10.36253/978-88-5518-656-8.02.

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The book meticulously analyses the history of the critical reception of avantguard art through the interpretations received by one of its greatest emblems, Les Demoiselles d'Avignon by Picasso, 1907. Since Les Demoiselles has been considered over this century the true paradigm of Modern Art, this book is, fundamentally, a sort of synthesis of the discourses about Modernism from formalism, iconology, Leo Steinberg's 'Other Criteria’, sociological, the biographical and psychoanalytical theses, cultural and historicist and lastly, the impact of post-structuralism and the feminist, post-colonialist and transnational interpretations. The final chapter deals with the artistic versions of Les Demoiselles d'Avignon made by artists. It is an essay on the different versions and identities of Modern Art and Modernism that have been produced throughout the last century.
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"What Are Narrative Generation Phenomena?" W Advances in Linguistics and Communication Studies, 1–58. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-5225-9693-6.ch001.

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First, this chapter introduces an idea that deals with narrative phenomena as the integration between the individual (narrative generation and reception system) and social levels (narrative production and consumption system); this idea is called the “multiple narrative structures model.” This chapter describes the future image of a human-machine symbiosis system that includes narrators and receivers as artificial intelligence. Furthermore, based on the concept of “visible narratives” and “invisible narratives,” the author analyzes the narrative components or elements to consider methods for synthesizing the analyzed elements. This idea of the analysis and synthesis of various narrative elements will be systematized in the “integrated narrative generation system.”
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Cavalcanti van Haandel, Johan. "The AM and FM Radio Changes in the Multimedia Radio Emergence". W Advances in Multimedia and Interactive Technologies, 171–91. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-5696-1.ch008.

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This study sees the technology and communication interface in the radio universe. In the last 20 years, radio became multimedia with the use of digital codes, which uses transmedia storytelling to spread the contents in different media and platforms. The objective of this chapter is to observe the changes in relation to the production of content in the multimedia radio, the reception and interaction processes of the receivers in this new context, and the language changes that occurred during the process. As a methodology, it presents a review of the current radio theory and an observation of the phenomena resulting from the production of multiplatform content in radio stations operating in AM and FM.
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Carr, Joseph J. "Diversity Reception Techniques". W The Technician's Radio Receiver Handbook, 295–98. Elsevier, 2000. http://dx.doi.org/10.1016/b978-075067319-8/50020-3.

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Fathimal, P. Mohamed, i P. Arockia Jansi Rani. "Threshold Secret Sharing Scheme for Compartmented Access Structures". W Cryptography, 438–48. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-1763-5.ch026.

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In the realm of visual cryptography, secret sharing is the predominant method of transmission and reception of secure data. Most of the (n, n) secret sharing schemes suffer from one common flaw — locking of information when the all- n number of receivers are not available for some reason. This paper proposes a new method of compartmented secret sharing scheme where some threshold number of equally privileged from each compartment can retrieve data. This scheme rules out regeneration of secret image at the single compartment thereby eliminating the danger of misusing secret image. The key features of this scheme are: better visual quality of the recovered image with no pixel expansion; non-requirement of half toning of color images; less computational complexity by reconstructing secret through XORing and simple addition of all share images. This scheme is highly beneficial in applications where data has to be stored securely in a database and in cloud computing to synchronize information passed to different groups or clusters from a single host.
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Thorsen, Thea S., i Robert Emil Berge. "Receiving Receptions Received". W Roman Receptions of Sappho, 289–402. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198829430.003.0016.

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This chapter includes the most comprehensive collection of Greek and Latin testimonies to Sappho to date, with English translations. The collection is preceded by a brief introduction that outlines the organization of previous collections and explains how the present collection builds on and differs from these. Furthermore, the chapter shows how interpolations, emendations, conjectures, and supplements in critical editions, from which the testimonies are taken, give such editions the character of a reception palimpsest. This chapter avoids the organization of existing collections into thematic sections, which run the risk of occluding the chronological order in which the testimonies appear as well as of imposing an unwarranted narrative onto the ancient testimonies to Sappho. Instead, the chapter presents the testimonies according to an approximate chronological order, alongside thematic key words.
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Streszczenia konferencji na temat "Receivers and reception"

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Ayed, Tahar, Adnane Cabani i Joseph Mouzna. "Performance of Video Reception on T-DMB Embedded Receivers using Simulink Modeling". W Signal and Image Processing and Applications / Artificial Intelligence and Soft Computing. Calgary,AB,Canada: ACTAPRESS, 2011. http://dx.doi.org/10.2316/p.2011.738-050.

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Badia, M., Adrián Pérez Portero i Aina García. "Montsec Ground Station". W Symposium on Space Educational Activities (SSAE). Universitat Politècnica de Catalunya, 2022. http://dx.doi.org/10.5821/conference-9788419184405.092.

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In every space mission, the ability to contact the satellite to transmit or receive telecommands and data is one of the critical parts, so having a good ground segment is fundamental. In support to 3Cat-2 operations a ground station was first developed by the UPC NanoSat Lab at UPC Campus Nord premises. However, due to increasing radio frequency interference it was moved to the Institute Space Studies of Catalonia (IEEC) - Observatori del Montsec (OdM), located in Sant Esteve de la Sarga, Lleida. This location has outstanding reception conditions in terms of very weak interference levels, and excellent elevation mask (i.e. satellites can be tracked even below the horizon). The ground station is equipped with a TX/RX Yagi antenna for amateur bands VHF (144-146 MHz) and UHF (435-438 MHz), and it also includes an S-band 3-meter dish in the commercial band (2025-2110 MHz, 2200-2290 MHz) for reception that will be upgraded for transmission in 2022. The antenna rotors, receivers etc. are remotely controlled to the operation-center in Barcelona and operations can be automated. Nowadays, the ground station is jointly operated by the UPC NanoSat Lab and the IEEC in support to the Catalan New Space strategy, in addition to the upcoming UPC missions.
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Khasianova, Elena, i Alexander Pestryakov. "Investigation of Hardware Impairments Degree Influence on the Reception Quality in Respect of the Zero-IF Receivers". W 2019 Systems of Signals Generating and Processing in the Field of on Board Communications. IEEE, 2019. http://dx.doi.org/10.1109/sosg.2019.8706828.

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Li, Zhe, Wei Deng, Wenjiang Pei, Yili Xia, Chao Zhu i Danilo P. Mandic. "SINR Analysis Of Mimo Systems With Widely Linear MMSE Receivers For The Reception Of Real-Valued Constellations". W 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications. IEEE, 2020. http://dx.doi.org/10.1109/pimrc48278.2020.9217357.

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Chevalier, Pascal, i Florian Dupuy. "Single and multiple antennas Alamouti receivers for the reception of real-valued signals corrupted by interferences - the Alamouti SAIC/MAIC concept". W 2009 Conference Record of the Forty-Third Asilomar Conference on Signals, Systems and Computers. IEEE, 2009. http://dx.doi.org/10.1109/acssc.2009.5469851.

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Đurković, Tomislav, Nenad Marelić i Robert Zekić. "Specificity of the anthropometric characteristics and fitness abilities of male volleyball players". W 12th International Conference on Kinanthropology. Brno: Masaryk University Press, 2020. http://dx.doi.org/10.5817/cz.muni.p210-9631-2020-2.

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Purpose: The main goal of this study is to analyze possible differences in the space of anthro-pometric characteristics, motoric and functional capabilities on the sample of senior male vol-leyball players with different playing roles. On the base of obtained data normative and modal values could be established eventually helping coaches to perform secondary selection – so called volleyball specialization (at the age of 15–16), pointing young players to certain roles where they will be able to achieve maximum results in the volleyball career. Methods: The research was conducted on 74 senior volleyball players all members of Cro-atian premier league teams. Players were categorized as setters (n = 11), central players (n = 17), receivers – attackers (n = 20), opposite hitters (n = 16), and liberos (n = 10). The sample of independent variables consisted of 4 anthropometric measures (body height, body weight, one hand standing reach and two hand standing reach. Ten standardized were used for the assessment of motor skills: lateral agility, starting acceleration, spike and block reach, general flexibility, explosive strength of arms and shoulders, spiking speed, repetitive strength of trunk flexors, static strength of trunk extensor and repetitive strength of chest, arm and shoulders. For the estimation of functional abilities, the relative maximal oxygen consump-tion was used. Dependent variable – playing role – is numerically defined and represents the afiliation of a player to a specific group: (1) setters, (2) central players, (3) receivers – at-tackers, (4) opposite hitters and (5) libero players. A one-way analysis of variance (ANOVA) with Tukey HSD post-hoc test was used to determine possible significant differences among groups of players. The level of significance was set at 0.05. Results: Significant differences (p < 0,05) were detected for 8 of 16 measured variables – all four anthropometric measures and four measures for the assessment of specific speed – strength capacities. Conclusion: Based on the obtained results, it is possible to identify the grouping of players in two subgroups, subgroup of attacking players (central players, receivers – attackers and opposite hitters) and the subgroup of the other players (setters and libero players). The main goal of the attackers is to win points with spiking blocking and serving actions for which they need certain anthropometric characteristics (height, weight, and arm span) and capabilities that enable high reaches during those actions. Extremely important is the ability to generate high spiking and serving speeds to prevent the reaction of the opponent block, defense, and service reception. For the second subgroup it can be said that they are not necessarily concentrated on winning points but on the preparation activities before spike in attack or counterattack like service reception (libero), defense (libero and setter) or setting (setter and libero) in the attack and counterattack complex for which body height, body weight and specific speed – strength capacities are not crucial (setter) or they are completely irrelevant (libero). Based on the obtained results the experts in the training process can direct the play-ers toward specific role and develop very skills that are highly correlated with the specific situational eficiency in the game.
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Lennie, Peter. "Cortical mechanisms of color vision". W OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1987. http://dx.doi.org/10.1364/oam.1987.thp2.

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In macaque monkey three distinct pathways relay information from the lateral geniculate nucleus (LGN) to the striate cortex. Two parvocellular pathways contain neurons with chromatically opponent receptive fields: one receives opposed inputs from R cones and G cones; the other receives inputs from B cones opposed by some combined signal from R and G cones. A distinctive feature of the R–G neurons (much the largest group in the LGN) is that they respond well to chromatic patterns of low spatial frequency and achromatic patterns of high spatial frequency. Magnocellular neurons receive inputs from all three classes of cone.
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Milosevic, Nenad, Jasmina Spasic i Zorica Nikolic. "Performance of Receiver in System with Cooperative Reception". W 2007 8th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services. IEEE, 2007. http://dx.doi.org/10.1109/telsks.2007.4375966.

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Zhao, Fuling, Yongjun Wang i Shaolin He. "Constraining interference in satellite reception and ground station receiver". W 2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE). IEEE, 2018. http://dx.doi.org/10.1109/isape.2018.8634364.

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Makievsky, Yuri. "RESEARCH OF MICROWAVE CIRCUITS CONTROL COMPUTER APPLIANCES IN RECEIVER-TRANSMITTER MODULE OF ACTIVE PHASED ARRAY ANTENNA". W International Forum “Microelectronics – 2020”. Joung Scientists Scholarship “Microelectronics – 2020”. XIII International conference «Silicon – 2020». XII young scientists scholarship for silicon nanostructures and devices physics, material science, process and analysis. LLC MAKS Press, 2020. http://dx.doi.org/10.29003/m1628.silicon-2020/293-295.

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Design conception of control module of microwave receiver-transmitter module of active phased array antenna is presented in this work. Universal control module is designed for reception of commands from antenna control system and transmission of commands to multidigit phase shift modules, attenuators and switches. It also provide module addressing. Logic of assignment of adresses to users and division of them to groups is realised
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Raporty organizacyjne na temat "Receivers and reception"

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DiJoseph, Patricia, Brian Tetreault i Marin Kress. AIS data case Study : identifying AIS coverage gaps on the Ohio River in CY2018. Engineer Research and Development Center (U.S.), czerwiec 2021. http://dx.doi.org/10.21079/11681/40886.

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This Coastal and Hydraulics Engineering Technical Note (CHETN) describes a method for evaluating the received coverage from Automatic Identification System (AIS) shore sites and the availability of historic vessel position reports along the Ohio River. The network of AIS shoreside sites installed and operated by the US Army Corps of Engineers (USACE) and the US Coast Guard (USCG) receive information transmitted from vessels; however, reception of these transmissions is generally line-of-sight between the vessel and the AIS site antenna. Reception may also be affected by factors such as the quality of the transceiver installation aboard the vessel as well as the state of the equipment at the receiving site. Understanding how to define and quantify coverage gaps along the inland river system can inform research utilizing AIS data, provide information on the performance of the AIS network, and provide guidance for efforts to address identified coverage gaps
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Tong, Lang. Wireless Ad-Hoc Networks with Receiver Multipacket Reception: Performance Analysis and Signal Processing. Fort Belvoir, VA: Defense Technical Information Center, marzec 2005. http://dx.doi.org/10.21236/ada430770.

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Tetreault, Brian, Marin Kress i Patricia DiJoseph. AIS data case study : evaluating reception of AIS position reports on the Missouri River by LOMA AIS sites in April and August 2020. Engineer Research and Development Center (U.S.), styczeń 2022. http://dx.doi.org/10.21079/11681/42980.

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This Coastal and Hydraulics Engineering Technical Note (CHETN) describes a method for evaluating the received coverage from Automatic Identification System (AIS) shoreside sites along the Missouri River managed by the US Army Corps of Engineers (USACE) Lock Operations Management Application (LOMA), and presents the results of that analysis. The purpose is to identify AIS coverage gaps in the current system. Reception of AIS transmissions between shore-based transceivers and vessels is generally line-of-sight between the vessel and the AIS site antenna. However, signal reception may be affected by factors such as the distance and terrain between the vessel and the transceiver site, quality of the transceiver installation, state of the equipment either aboard the vessel or at the shore transceiver station, and atmospheric phenomena. Quantifying coverage gaps along the inland waterways system can inform research that uses AIS data, provide information on the performance of the AIS network, and provide guidance for efforts to address coverage gaps to improve navigation safety. In autumn 2020, severe shoaling was occurring on the Missouri River. As the shoals were identified, the Kansas City District requested the LOMA system transmit AIS Aid to Navigation (AtoN) to mark the shoals in several critical areas. However, vessel pilots sometimes reported that they were not receiving the AIS AtoN being transmitted. At the request of the Kansas City District, the US Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory (ERDC-CHL), conducted a coverage analysis using data collected from the LOMA AIS transceivers in the area to determine if there were coverage issues and their extent and to aid in determining the best means of addressing any coverage gaps.
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Böhm, Franziska, Ingrid Jerve Ramsøy i Brigitte Suter. Norms and Values in Refugee Resettlement: A Literature Review of Resettlement to the EU. Malmö University, 2021. http://dx.doi.org/10.24834/isbn.9789178771776.

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As a result of the refugee reception crisis in 2015 the advocacy for increasing resettlement numbers in the overall refugee protection framework has gained momentum, as has research on resettlement to the EU. While the UNHCR purports resettlement as a durable solution for the international protection of refugees, resettlement programmes to the European Union are seen as a pillar of the external dimension of the EU’s asylum and migration policies and management. This paper presents and discusses the literature regarding the value transmissions taking place within these programmes. It reviews literature on the European resettlement process – ranging from the selection of refugees to be resettled, the information and training they receive prior to travelling to their new country of residence, their reception upon arrival, their placement and dispersal in the receiving state, as well as programs of private and community sponsorship. The literature shows that even if resettlement can be considered an external dimension of European migration policy, this process does not end at the border. Rather, resettlement entails particular forms of reception, placement and dispersal as well as integration practices that refugees are confronted with once they arrive in their resettlement country. These practices should thus be understood in the context of the resettlement regime as a whole. In this paper we map out where and how values (here understood as ideas about how something should be) and norms (expectations or rules that are socially enforced) are transmitted within this regime. ‘Value transmission’ is here understood in a broad sense, taking into account the values that are directly transmitted through information and education programmes, as well as those informing practices and actors’ decisions. Identifying how norms and values figure in the resettlement regime aid us in further understanding decision making processes, policy making, and the on-the-ground work of practitioners that influence refugees’ lives. An important finding in this literature review is that vulnerability is a central notion in international refugee protection, and even more so in resettlement. Ideas and practices regarding vulnerability are, throughout the resettlement regime, in continuous tension with those of security, integration, and of refugees’ own agency. The literature review and our discussion serve as a point of departure for developing further investigations into the external dimension of value transmission, which in turn can add insights into the role of norms and values in the making and un-making of (external) boundaries/borders.
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Halker Singh, Rashmi B., Juliana H. VanderPluym, Allison S. Morrow, Meritxell Urtecho, Tarek Nayfeh, Victor D. Torres Roldan, Magdoleen H. Farah i in. Acute Treatments for Episodic Migraine. Agency for Healthcare Research and Quality (AHRQ), grudzień 2020. http://dx.doi.org/10.23970/ahrqepccer239.

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Objectives. To evaluate the effectiveness and comparative effectiveness of pharmacologic and nonpharmacologic therapies for the acute treatment of episodic migraine in adults. Data sources. MEDLINE®, Embase®, Cochrane Central Registrar of Controlled Trials, Cochrane Database of Systematic Reviews, PsycINFO®, Scopus, and various grey literature sources from database inception to July 24, 2020. Comparative effectiveness evidence about triptans and nonsteroidal anti-inflammatory drugs (NSAIDs) was extracted from existing systematic reviews. Review methods. We included randomized controlled trials (RCTs) and comparative observational studies that enrolled adults who received an intervention to acutely treat episodic migraine. Pairs of independent reviewers selected and appraised studies. Results. Data on triptans were derived from 186 RCTs summarized in nine systematic reviews (101,276 patients; most studied was sumatriptan, followed by zolmitriptan, eletriptan, naratriptan, almotriptan, rizatriptan, and frovatriptan). Compared with placebo, triptans resolved pain at 2 hours and 1 day, and increased the risk of mild and transient adverse events (high strength of the body of evidence [SOE]). Data on NSAIDs were derived from five systematic reviews (13,214 patients; most studied was ibuprofen, followed by diclofenac and ketorolac). Compared with placebo, NSAIDs probably resolved pain at 2 hours and 1 day, and increased the risk of mild and transient adverse events (moderate SOE). For other interventions, we included 135 RCTs and 6 comparative observational studies (37,653 patients). Compared with placebo, antiemetics (low SOE), dihydroergotamine (moderate to high SOE), ergotamine plus caffeine (moderate SOE), and acetaminophen (moderate SOE) reduced acute pain. Opioids were evaluated in 15 studies (2,208 patients).Butorphanol, meperidine, morphine, hydromorphone, and tramadol in combination with acetaminophen may reduce pain at 2 hours and 1 day, compared with placebo (low SOE). Some opioids may be less effective than some antiemetics or dexamethasone (low SOE). No studies evaluated instruments for predicting risk of opioid misuse, opioid use disorder, or overdose, or evaluated risk mitigation strategies to be used when prescribing opioids for the acute treatment of episodic migraine. Calcitonin gene-related peptide (CGRP) receptor antagonists improved headache relief at 2 hours and increased the likelihood of being headache-free at 2 hours, at 1 day, and at 1 week (low to high SOE). Lasmiditan (the first approved 5-HT1F receptor agonist) restored function at 2 hours and resolved pain at 2 hours, 1 day, and 1 week (moderate to high SOE). Sparse and low SOE suggested possible effectiveness of dexamethasone, dipyrone, magnesium sulfate, and octreotide. Compared with placebo, several nonpharmacologic treatments may improve various measures of pain, including remote electrical neuromodulation (moderate SOE), magnetic stimulation (low SOE), acupuncture (low SOE), chamomile oil (low SOE), external trigeminal nerve stimulation (low SOE), and eye movement desensitization re-processing (low SOE). However, these interventions, including the noninvasive neuromodulation devices, have been evaluated only by single or very few trials. Conclusions. A number of acute treatments for episodic migraine exist with varying degrees of evidence for effectiveness and harms. Use of triptans, NSAIDs, antiemetics, dihydroergotamine, CGRP antagonists, and lasmiditan is associated with improved pain and function. The evidence base for many other interventions for acute treatment, including opioids, remains limited.
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