Evaluations of SIC by Power Difference in IM-NOMA

Author(s):  
Yuta Tsuzuki ◽  
Shigeru Shimamoto ◽  
Zhenni Pan
Keyword(s):  
Author(s):  
Elizabeth Shakman Hurd

In recent years, North American and European nations have sought to legally remake religion in other countries through an unprecedented array of international initiatives. Policymakers have rallied around the notion that the fostering of religious freedom, interfaith dialogue, religious tolerance, and protections for religious minorities are the keys to combating persecution and discrimination. This book argues that these initiatives create the very social tensions and divisions they are meant to overcome. It looks at three critical channels of state-sponsored intervention: international religious freedom advocacy, development assistance and nation building, and international law. It shows how these initiatives make religious difference a matter of law, resulting in a divide that favors forms of religion authorized by those in power and excludes other ways of being and belonging. In exploring the dizzying power dynamics and blurred boundaries that characterize relations between “expert religion,” “governed religion,” and “lived religion,” the book charts new territory in the study of religion in global politics. The book provides new insights into today's most pressing dilemmas of power, difference, and governance.


2019 ◽  
Vol 4 (1) ◽  
pp. 37-58
Author(s):  
Qun Zheng ◽  
Ying Xu

Pragmatic (in)felicity in requests refers to the (in)appropriateness and (im)politeness of one's language use. It has been a great challenge to L2 learners, as they are likely to compose grammatically correct but pragmatically infelicitous requests. Such infelicity could be associated with pragmalinguistic and sociopragmatic factors, yet whether L2 learners are aware of those factors has been underexplored. To understand the effects of power, imposition, and modifications on email perception, we designed a matched guise test for 224 Chinese L2 learners, who were instructed to rate from 1 (very inappropriate/impolite) to 5 (very appropriate/polite) on four email requests (Power±; Imposition±). We found that (1) learners are highly aware of pragmalinguistic factors because they perceive requests mitigated by internal and external modifications as more appropriate and polite (p < .05), (2) learners have limited awareness of power difference as they rank direct form as inappropriate in peer-to-peer interaction, and (3) learners cannot realise fully the sociopragmatic factors involved in high-imposition situations. The awareness of pragmatic (in)felicity among learners seems to be underdeveloped as regards degree of power and imposition. The findings could have some implications in language pedagogy.


2020 ◽  
Vol 4 (1) ◽  
pp. 25-33
Author(s):  
Hery Sudira Silaban ◽  
Afriana Afriana

The aims of this research were to find out the types and the function of address form in the Mortdecai movie. It was a descriptive qualitative research. To collect the data, documentation and observation method are used.The source of data was the Mortdecai movie in 2015 with the action/comedy genre, the data were the dialogue in the Mortdecai movie. To analyze the data, a sociolinguistics approach was used with the theory of Gumperz, for the address form Robinson theory was used. Researchers were also using Wardhaugh's theory for the types of address form and Chaika's theory for the function of address form. The result of the research, six types of address form were found and three functions of address form were found in the Mortdecai movie. For the types of address form those were, First Name (FN), Title plus Last Name (TLN), Title alone (T), Last Name (LN), Pet Name (PN) and Kinship Term (KT), and for the function were to show intimacy, power difference, and respect. Each use of the address form was different depending on a context, relationship, or position that a person had, while the function of the address form defined the intention of the person to addressed someone. Keywords: Sociolinguistics, Address Form, Mortdecai


2021 ◽  
Vol 6 (4) ◽  
pp. 997-1014
Author(s):  
Janna Kristina Seifert ◽  
Martin Kraft ◽  
Martin Kühn ◽  
Laura J. Lukassen

Abstract. Space–time correlations of power output fluctuations of wind turbine pairs provide information on the flow conditions within a wind farm and the interactions of wind turbines. Such information can play an essential role in controlling wind turbines and short-term load or power forecasting. However, the challenges of analysing correlations of power output fluctuations in a wind farm are the highly varying flow conditions. Here, we present an approach to investigate space–time correlations of power output fluctuations of streamwise-aligned wind turbine pairs based on high-resolution supervisory control and data acquisition (SCADA) data. The proposed approach overcomes the challenge of spatially variable and temporally variable flow conditions within the wind farm. We analyse the influences of the different statistics of the power output of wind turbines on the correlations of power output fluctuations based on 8 months of measurements from an offshore wind farm with 80 wind turbines. First, we assess the effect of the wind direction on the correlations of power output fluctuations of wind turbine pairs. We show that the correlations are highest for the streamwise-aligned wind turbine pairs and decrease when the mean wind direction changes its angle to be more perpendicular to the pair. Further, we show that the correlations for streamwise-aligned wind turbine pairs depend on the location of the wind turbines within the wind farm and on their inflow conditions (free stream or wake). Our primary result is that the standard deviations of the power output fluctuations and the normalised power difference of the wind turbines in a pair can characterise the correlations of power output fluctuations of streamwise-aligned wind turbine pairs. Further, we show that clustering can be used to identify different correlation curves. For this, we employ the data-driven k-means clustering algorithm to cluster the standard deviations of the power output fluctuations of the wind turbines and the normalised power difference of the wind turbines in a pair. Thereby, wind turbine pairs with similar power output fluctuation correlations are clustered independently from their location. With this, we account for the highly variable flow conditions inside a wind farm, which unpredictably influence the correlations.


2019 ◽  
Vol 19 (1) ◽  
pp. 1-18
Author(s):  
Aliyah Ali ◽  
Shagufta Nasreen ◽  
M. Abuzar Wajdi

Gender based sociological and linguistic studies show that differences exist in communication style of men and women, boys and girls. Although many gender stereotypes have changed with modernization and awareness about gender issues however common assumption is that ‘girls are talkative’ and boys are ‘less emotional’. In the context of transitions in culture and society, this study explored verbal and nonverbal communication differences among male and female university students. Using purposive sampling method, male and female students were observed in three types of groups sitting at different social spots in University of Karachi. In total 30 male and 30 female students were observed for verbal and nonverbal communication. The units of observations were Paralanguage (words, pitch, volume, speaking rate) for verbal communication and gestures, facial expressions, eye contact, distance and space when sitting and standing. Results showed that overall both boys and girls were talkative and used slang language within same sex groups. However, the topic of discussion was personal for girls and politics for boys. Females kept a space and distance while sitting and standing as compared to boys. Within groups, male and female student’s body language showed superiority. The study has limitations therefore generalization of results for other gender-typed situations are not promising. Future studies could examine in other situations where status and power difference exist within relationships.


2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Jing Jiang ◽  
Ming Lei ◽  
Huanhuan Hou

This paper aims to provide a comprehensive scheme with limited feedback for downlink millimeter wave (mmWave) multiuser multiple-input multiple-output (MIMO) nonorthogonal multiple access (NOMA) system. Based on the feedback of the best beam and the channel quality information (CQI) on this beam, the users are grouped into a cluster having the same or coherent best beam and the maximal CQI-difference. To further reduce the intercluster interference, only the candidate cluster can join the cluster set whose intercluster correlation with the existing clusters is lower than threshold. Based on the results of clustering, mmWave hybrid beamforming is designed. To improve the user experience, each cluster selects the best beam of the user with the higher guaranteed rate requirement as the analog beamforming vector. For digital beamforming, the weak user applies the block diagonalization algorithm based on the strong user’s effective channel to reduce its intracluster interference. Finally, an intracluster power allocation algorithm is developed to maximize the power difference in each cluster which is beneficial to improve the successive interference cancelation (SIC) performance of the strong user. Finally, simulation results show that the proposed MIMO-NOMA scheme offers a higher sum rate than the traditional orthogonal multiple access (OMA) scheme under practical conditions.


2000 ◽  
Vol 18 (9) ◽  
pp. 1224-1230 ◽  
Author(s):  
Y. Ogawa ◽  
F. Forme ◽  
S. C. Buchert

Abstract. The k-dependence of the received power in high signal-to-noise ratio (SNR) conditions, occurring for naturally enhanced ion-acoustic lines (NEIALs) and for real satellites, is investigated by using the EISCAT Svalbard Radar (ESR), where the data are recorded in eight separate channels using different frequencies. For the real satellites we find large variations of the relative powers from event to event, which is probably due to a different number of pulses catching the satellite over the integration period. However, the large power difference remains unexpected in one case. Over short time scale (< 10 s) the relative power difference seems to be highly stable. For most NEIAL events the differences between channels are within noise level. In a few cases variations of the relative power well above both the estimated and expected 1-sigma level occur over a signal preintegrated profile. We thus suggest that the frequency dependence of the power in NEIAL events has its origin in the scattering medium itself as the most plausible explanation.Key words: Ionosphere (auroral ionosphere; plasma waves and instabilities; instruments and techniques)


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