Reception Environment Research Articles

포스트 시네마 환경에서의 관객 현전에 관한 연구

This study defines the diversified media environment of contemporary visual art as a post-cinema environment and analyzes how the spatial expansion of the screen and the conceptual transformation of the camera have occurred within it. By examining the altered methods of image production, mediation, and reception, the research reveals the presence of the spectator as a noncorporeal subject in the visual field of image experience. The changes in the screen and the audience have been driven by the transition to multi-screen and multimedia environments, leading to a transformation in visual perception through physical environments that interact with images in expanded spaces. Additionally, the post-cinema camera, as a non-human agency, has broadened the scope of image production and mediation through computer imaging processes and digital technologies. It not only intervenes between the unexperienced realities beyond human cognition and the audience as the experiencing subject, but also produces and mediates images for machines as machine vision, facilitating the process of converting representation into information. Furthermore, this study argues that the issue of spectator presence in the visual field can be understood through the paradox of absence and presence in the technological context of 21st-century media. It asserts that the spectator emerges as an “electronic body” that transcends the physical body in the image reception environment. The concept of the audience's electronic body introduces perspectives on the coding and informatization of the body due to technological interventions by computers and media, as well as the hybrid sensations resulting from the interaction between bodies and devices, proposing a new notion of corporeality for non-corporeal subjects in the new media environment.

An Experimental Implementation of China Digital Radio (CDR) Broadcasting in Hubei

This paper presents the research and implementation of a China Digital Radio (CDR) experimental network in Hubei, China with two FM-CDR transmitting stations and four FM-band channels. To study the coverage discontinuity problem in a large service area, the experimental network employs an intelligent networking solution that incorporates multiple service channels carrying Broadcast and Data Services (BADS) and a Common-Regional-Information Channel (CRIC) carrying both service data and system information. The electronic service guide (ESG) carried by CRIC can inform the receivers about the available contents from current and adjacent stations, which can significantly improve the service quality in the overlapping areas, especially under mobile reception environment. Two RF tuners are used in the receiving terminals to access the CRIC, and the BADS channel, respectively. This paper first presents the frequency analysis and coverage tests of the experimental network, and then summarizes the coverage performances with different transmission parameter combinations. The goal is to gain experience in frequency planning, coverage prediction, as well as supportable services of CDR digital audio broadcasting.

Multiple Cycle Slip Detection Algorithm for a Single Frequency Receiver.

A satellite navigation system makes it simple to find and navigate to a specific position. Although a carrier measurement is required to establish a precise position due to the characteristics of the carrier observation, it is difficult to determine a robust position in a poor signal reception environment such as urban areas. Various studies are being carried out to overcome this problem, with cycle slips being the most important factor. With only a single frequency, it is very challenging to detect cycle slips in multiple satellite channels at the same time. A geometry-based technique is proposed in this study as a technical solution for detecting simultaneous cycle slips for multiple channels utilizing only a single-frequency receiver. The method could detect a half-wavelength size of cycle slip for each channel through the geometry information.

R@dio, Web-R@dio, App-R@dio… sonoesfera on air y online

La radio es el medio de comunicación que mejor se adapta a la evolución tecnológica de cada momento, innovación permanente de contenidos que impacta el tejido social y en el ecosistema digital modifica el modelo de negocio y la forma como el público confronta al medio radio. Entramado cultural en el que la estructura de la industria radiofónica está condenada a repensar sus rutinas productivas, eje narrativo, esquemas de transmisión y entorno de recepción; escenario en el que converge la antena con la r@dio, la web-r@dio, la app-r@dio y otras plataformas en las que circula el contenido sonoro y no sonoro que se ofrece a los oyentes–usuarios. Instancias que enfocan las dinámicas del quehacer al campo digital donde comienzan a describirse nuevas estrategias de marketing para una audiencia en pantalla; el libro “R@dio en la sonoesfera digital” evidencia la transformación de la industria sonora, adaptación al ecosistema digital de las audiencias, que despliega una táctica para propiciar un consumo 360º en donde se encuentra un lugar desde el que se cambia y evoluciona a una nueva realidad; el podcast como eje de contenido en la red revitaliza generos y formatos que se habían dejado de lado y dan vida, y relevancia, al sonido en el proceso de comunicación.

Understanding migration through translating the multimodal code

Manipulating discoursal inferences in translated texts, among other things (Allanmand and Jaszczolt, 2012; Tipton and Desilla, 2019), affects pragmatic aspects of meaning-making and allows intended implications to follow from target messages. Press communication is keen on manipulating inference-making (both verbally and visually and press translation offers a unique opportunity for tracking down the specifics of pragmatic shifts, heightening awareness of the significance of multimodality in shaping identities and affecting public view.The study examines pragmatic variation in twenty pairs of web-retrieved English source and Greek target press news headlines and accompanying images on the European refugee crisis in 2015. It highlights how inference-drawing through verbal and visual discourses changes the meaning of the news, through translation strategizing. The study first shows that verbal discursive strategies re-narrate (rather than simply transfer) news stories for the target audience, to reshape their perception of reality. The study then shows that the reshaping of the news is realized multimodally (rather than simply verbally), i.e. with shifts in the visual message (Valdeón, 2018), while mediators critically re-narrate news items (Sidiropoulou, 2018) by interfering with the inference-drawing mechanism, the us/them strategizing in the reception environment, and by avoiding unintended connotations which may be disseminated globally. Shifts in the visuals accompanying digital texts seem to be vital in re-narrating the divide between Northern Europe and the Mediterranean area, which reshapes 'Europeanness' and reassigns an us/them status to stakeholder roles by managing content and aesthetic value of images.Translation scholars often focus on the transfer of verbal messages. However, translating the visual code is another crucial layer of signification generating pragmatic inferences which reshape the meaning of the news. Pragmatics and translation seem to be two inherently connected fields. Translation seems to be another platform, in addition to that of monolingual discourse, where the specifics of pragmatic meaning-making become most evident through the 're-narration' process, while pragmatics becomes highly instrumental in accounting for the specifics of translation strategizing.

Interpreting Chinese Culture-Loaded Sayings: A Case Study of Press Conference of Two Sessions

As an indispensable means to elaborate on China’s development momentum and to set up global image, interpretation of press conference for Two Sessions presents the study essence of international publicity translation and the key problems lie in the culture-loaded expression translation. In light of the Functional Linguistics and Functionalist translation theory, the top-down hierarchic problem-solving approach is adopted for the original analysis. The target-oriented perspective aims at acquiring adequate version instead of equivalence between the source and target. The past decade example extractions cover the interpretation of the four-character set phrases, colloquial expressions, quotations and proverbs. Nine frequently-used interpretation types are concluded and analyzed in terms of the intended function and addressees’ reception environment by comparing the source and target cultures. Statistic results show that the compatibility between the two cultures may account for, to some extent, the method selection for interpreting practice in question. The more compatible of the relationship between the two cultures, the more tendency of preserving the original cultural image, and the more literal forms will be employed. And the larger the cultural distance, the more adjustments and adaptions would be adopted. With due consideration of the intentional function and addressees’ background, the versions may be readily accepted.

6-3 時空間MIMOと空間多重MIMOの移動受信における伝送特性の野外実験による比較(第6部門 放送方式1(素材の伝送・配信))

6-3 時空間MIMOと空間多重MIMOの移動受信における伝送特性の野外実験による比較(第6部門 放送方式1(素材の伝送・配信))

Development of GNSS/WSS/YRS integration algorithm for land vehicle positioning

Since the Global Navigation Satellite System (GNSS) positioning technique provides precise navigation solutions for a long time, it has been broadly applied for the automotive navigation system. However, the inherent weakness of the GNSS technique is their reliance on the GNSS signal reception environment. To solve this problem, it is necessary to integrate dead reckoning sensors with GNSS positioning technique. Recently, the vehicle dynamic sensors are mounted on the passenger car to improve safety and convenience in driving. Among various vehicle dynamic sensors, wheel speed sensor (WSS) and yaw rate sensor (YRS) can measure the vehicle motion to operate dead reckoning system. In this study, GNSS/WSS/YRS integration algorithm for land vehicle positioning system is developed based on the loosely coupled integration using extended Kalman filter. The performance of the integration algorithm is evaluated based on two test data sets obtained by real test driving by simulating GNSS signal outage. It is found that the proposed algorithm estimates the horizontal positions with meter-level of accuracy when GNSS outage occurs for 30 s. However, the accuracy would be degraded due to irregular road surface so that the study to find additional constraints or integrate with other sensors is necessary in further study.

Performance analysis of FBMC-CR through optimization: tradeoff between various performance parameters in the cognitive radio environment

This paper provides the detailed simulation analysis of Filter Bank Multicarrier Cognitive Radio for doing tradeoff between the parameters of cognitive radio for achieving optimum performance. An attempt for tradeoff between different transmission-radio environment parameters has been done as this leads to an increase in spectrum efficiency by decreasing the spectral leakage which provides optimal performance. The optimization-tradeoff between different radio environment parameters is necessary for prediction and planning of future wireless communication systems. Transmission, reception and radio environment parameters play a key role in the performance enhancement of FBMC cognitive radio.

Contained density currents with high volume of release

AbstractContained density currents with high volume of release reflect against the boundaries of the reception environment commonly leading to oscillatory flow. These flows exist in sediment clarifiers, compromising their operations, and deposited signatures of contained turbidity currents are found as part of the infill of sedimentary basins; for operation of the former and interpretation of the latter it is essential to understand the dynamic processes of these flows. Six lock‐exchange experiments with different initial densities were made in a horizontal flume, where the volume of the saline mixture in the lock was equivalent to the volume of the ambient fluid. A further two tests, with a repeated initial density, were made: one with high volume of release and very long duration; and another with low volume of release. Firstly, the movement of the current is discussed, including the oscillations within the experimental tank involving the density current and an upper layer counter‐current. It is shown that the cyclic behaviour is self‐similar with the reduced gravity of the initial density in the lock. Secondly, entrainment and water mixing processes are characterized. The time evolution of mixing is characterized qualitatively by analysing the background potential energy of the density distributions to show that mixing occurs even in the earlier stages of the current, and mainly within the first cycle of the oscillation. Quantified analysis reveals that, in currents with high volume of release, entrainment discharge is one order of magnitude higher, mainly due to the larger interface between the ambient fluid and the current. A model for the evolution of the mixing process is proposed for density currents with high volume of release. Finally, the dynamics of the head of the current is analysed. The entrainment in the head, when compared to the entrainment in the remainder body of the flows, is less important for the configuration with a larger lock.

New Quality Control Algorithm Based on GNSS Sensing Data for a Bridge Health Monitoring System.

This research introduces an improvement plan for the reliability of Global Navigation Satellite System (GNSS) positioning solutions. It should be considered the most suitable methodology in terms of the adjustment and positioning of GNSS in order to maximize the utilization of GNSS applications. Though various studies have been conducted with regards to Bridge Health Monitoring System (BHMS) based on GNSS, the outliers which depend on the signal reception environment could not be considered until now. Since these outliers may be connected to GNSS data collected from major bridge members, which can reduce the reliability of a whole monitoring system through the delivery of false information, they should be detected and eliminated in the previous adjustment stage. In this investigation, the Detection, Identification, Adaptation (DIA) technique was applied and implemented through an algorithm. Moreover, it can be directly applied to GNSS data collected from long span cable stayed bridges and most of outliers were efficiently detected and eliminated simultaneously. By these effects, the reliability of GNSS should be enormously improved. Improvement on GNSS positioning accuracy is directly linked to the safety of bridges itself, and at the same time, the reliability of monitoring systems in terms of the system operation can also be increased.

Practical Implementation of Spectrum Sensing and Signal Detection for Satellite Broadcasting Systems

In the European satellite broadcasting specifications, the symbol rate and the carrier frequency are not regulated. Furthermore, the first generation format DVB-S does not have any control signals. In a practical environment, the received signal condition is not stable due to the imperfect reception environment, i.e., unterminated receiver ports, cheap indoor wiring cables etc. These issues prevent correct detection of the satellite signals. For this reason, the conventional signal detection method uses brute force search for detecting the received signal's cyclostationarity, which is an extremely time-consuming approach. A coarse estimation method of the carrier frequency and the bandwidth was proposed by us based on the power spectrum. We extend this method to create a new method for detecting satellite broadcasting signals, which can significantly reduce the search range. In other words, the proposed method can detect the signals in a relatively short time. In this paper, the proposed method is applied to signals received in an actual environment. Our analysis shows that the proposed method can effectively reduce the detection time at almost a same detection performance.

Patient’s satisfaction with orthodontic treatment at King Khalid University, College of Dentistry, Saudi Arabia

Introduction: Patient satisfaction is important for ensuring patient’s adherence in orthodontic treatment. As teaching institutions, dental college clinics must constantly strive to find a balance between satisfying the needs of the patients and ensuring proper training of the students. The objective of the present study was to assess dental patient’s satisfaction with orthodontic treatment and related services at King Khalid University, College of Dentistry (KKU COD), Saudi Arabia.Materials and methods: A 19 item closed end questionnaire was developed and pretested to assess patient’s satisfaction with orthodontic care. The questionnaire items were designed under three domains: 1) Reception and work environment, 2) doctor-patient relationship, and 3) treatment expectations and satisfaction. The study sample consisted of all patients consulting the orthodontic clinics during the time frame of the survey and those who were willing to participate.Results: A total of 72 patients completed the survey within the time framework. The mean age of the patients was 21.2±8.06 of which males were 69.5% and Females 30.5%. The highest subscale score was found to be with patient’s treatment expectations and satisfaction (92.6%) followed by reception and work environment (89.3%) and dentist-patient relationship (82.7%). The overall patient’s satisfaction for orthodontic services among the patients was found to be 87.1%.Conclusion: There was a high dental patient’s satisfaction with orthodontic services at COD KKU, Saudi Arabia as a teaching institution. The dentist-relationship was found to be key factor in determining dental patient’s satisfaction.Bangladesh Journal of Medical Science Vol.14(2) 2015 p.146-150

DVB-T2기반으로 지상파 UHDTV방송과 직접수신환경 구축 연구

In this paper, 4K-UHDTV or 8K-UHDTV and UHD-3DTV that the next generation broadcasting implementation and the possibility of direct receiving environment construction is analyzed on the terrestrial broadcasting. Particularly, we investigated the possibility by analyzing the previous and related works with regard to UHDTV transmission by DVB-T2 that is one of the best commercialized transmission mode. In order that the UHDTV broadcasting succeeds once again after completion of digital terrestrial switch over at the end of 2012, the ultra high resolution image transfer is important. However, the direct, the indoor and ubiquitous receiving environment is important in not only TV but also the personal type multimedia terminal in the sense of UHDTV service penetration. Therefore, in this paper, by using SFN and high error-correcting mode in DVB-T2 standard, the efficient frequency utilization and effective reception environment construction is illustrated. Particularly, SFN network constitution by 2 mutually different frequencies including the VHF bandwidth and UHF band, and etc. is shown. And the method that builds the free wireless receive environment by using SFN low power radio repeater and for home use gap filler is proposed. And the effect and frequency amount required are presented, when UHDTV broadcasting use 10MHz bandwidth.

Ka-band 위성통신의 다양한 수신환경 별 전파특성 분석

Abstract In this paper, the signal reception environment of the satellite communications was analyzed on urban, suburban and rural environment. The correct analysis of received environment is very important in the satellite communications because the presence of various attenuation factors. Analyze attenuation factor through the simulation and that apply to each receiving environment. The urban and suburban various received sensitivity is determined according to building height and density. Moreover, attenuation occurs in rural areas due to the mountainous and vegetation. In this paper, we analysis of variety receiving environment according to movement of the ground station and the satellites can be utilized to provide stable multimedia services. Key Words : Satellite communication, Propagation, attenuation, Diffraction attenuation, Path search algorithm * 준회원, 충북대학교 전파통신공학과 ** 준회원, IM Technology *** 준회원, 국방과학연구소 **** 정회원, 충북대학교 전파통신공학과, 교신저자접수일자 2013년 1월 11일, 수정완료 2013년 2월 7일게재확정일자 2013년 2월 8일Received: 11 January 2013 / Revised: 7 February 2013 /Accepted: 8 February 2013

GBAS 지상시스템 설치후보지 선정을 위한 김포국제공항의 GPS 신호환경 분석

Before GBAS ground systems is installed at the airport, the site survey is needed to determine the suitability of proposed GBAS candidate sites depending on the siting requirements. Therefore, analysis of GPS signal reception environment, one of the site survey steps, is required. In this paper, the number of visible satellites, GPS signal strength, multipath error, radio frequency interference and predicted availability were analyzed using the GPS data of Gimpo International Airport measured by PortaSAT equipments and the analysis results were represented.

Ka-band를 활용한 정지궤도 위성의 도심지 전파특성 분석

In satellite communication system, propagation characteristics analysis of the receiving environment is very important, because radio quality is changed by the receiving environment. Unlike Terrestrial wireless communications, satellite communication is affected by altitude and atmospheric environment. Therefore, there are many factors to consider for propagation characteristics analysis. In this paper, signal reception environment of geostationary earth orbit was analyzed on urban environment. In order to analyze the propagation simulation, virtual buildings was established and reception environment was changed. The results of this paper would help to design the satellite mobile communication systems in Ka-band.

GBAS Cat-I 지상시스템 시범공항 구축을 위한 설치후보지 검토

This paper presents site survey processes and the results for installing GBAS Category-I ground system into Gimpo international airport. For siting assessment, many things should be taken into account in advance, such as installation requirement of GBAS components, future airport development plan and possible interference effects to existing facilities. Because overall performance of GBAS system can be affected by GPS signal reception environment, on-site survey should be performed carefully to measure actual GPS environmental performance and determine if any adverse multipath or RFI problems exist or not. In addtion, VDB antenna should be located to ensure line of sight for transmitting VHF signal to deliver GBAS message to aircraft. Based on the survey results, final location for GBAS system installation is selected near runway 32 in the Gimpo airport.

지상파 방송의 디지털 전환 완료 이후 700MHz대역 주파수 재배치에 대한 이용자 인식 연구

This study investigates the users' preference of frequency reallocation and frequency auction after digital transition of terrestrial broadcasting and it focuses on the relationships between media using pattern, reception environment of broadcasting tele- communication, and expectation for the universal service and requirement for the public interest. The results show that the longer DMB viewing hours, people prefer to frequency allocation for the telecommunication side. The technical aspects such as perception on the reception environment of broadcasting don't make effect on the users' preference of frequency allocation. In addition, the more people think the universal service of terrestrial broadcasting important, the more people think it unnecessary to adopt auction system to the broadcasting frequency. These results give implication that it is the most basic condition to improve the reception environment in order to accomplish universal service duty of terrestrial broadcasting.

이동체의 수신 환경을 고려한 GNSS 신호 생성기 개발

GNSS 신호는 구조가 개방되어 있을 뿐만 아니라 수신 신호 세기가 미약하여 전파교란에 취약하다. 이에 따라 전파교란에 대한 영향 분석 및 대응 기법에 대한 연구의 필요성이 증대되고 있다. 본 논문에서는 실제 전파교란 환경과 유사한 환경에서의 전파교란 영향 분석을 위하여 6가지 전술 환경에 대한 전파 전파 모델과 이동체의 수신환경을 고려한 동체 차단 모델을 설계 하였다. 전파전파 모델은 도심지역, 농촌지역, 수풀지역, 해안지역, 황무지, 눈/얼음 지역에 대해서 Two-ray 모델을 이용하여 설계 하였다. 동체 차단 모델은 안테나가 이동체에 의하여 받는 영향과 사용자가 직접 입력한 안테나 패턴을 이용하여 모델링하였다. 전파교란이 없는 정상 환경과 전파교란 환경에 대하여 이동체의 수신환경을 고려한 GNSS 신호 생성기의 출력은 상용수신기(NordNav)를 이용하여 검증 하였다. 정상 환경에서는 사용자의 항법 성능이 상용 H/W 신호 생성 시뮬레이터(STR4500)과 유사한 것을 확인하였다. 전파교란 환경에서는 이동체 위치에 따른 동체 차단 효과 및 전파교란 신호에 의한 GNSS 신호 획득 및 추적 손실이 정확히 반영됨을 확인 하였다. GNSS signal is vulnerable to jamming signal because of well-known signal structure and weak signal power. For these reasons, the need for analysis of jamming effects and anti-jamming techniques of is increasing. In this paper, a GNSS signal generator is designed which includes a radio wave propagation model for six kind of tactical environments and a body masking model for the reception environment of a vehicle. The radio wave propagation model for downtown, rural, forest, coastline, waste land and snow or ice area is designed using two-ray model. The body masking model is designed the effect which the antenna is affected by the reception environment of a vehicle and radiation pattern from a user configuration. The performance of generated signals from the GNSS signal generator considering reception environment of a vehicle is evaluated by a commercial GPS L1 receiver(NordNav) in normal and jamming environment. Also, the generated GNSS signal is compared to a commercial GPS L1 H/W based RF signal generator(STR4500). The results show that the designed GNSS signal generator in a normal environment compared to the same navigation performance. In jamming environment, it is shown that the body masking effect and GNSS signal acquisition and tracking loss in compliance with the jamming signal are precisely working in the reception environment of a vehicle.