350,593 research outputs found
Author Correction: IRE1α-XBP1s pathway promotes prostate cancer by activating c-MYC signaling
No full textSheng X, Nenseth HZ, Qu S, et al. Author Correction: IRE1alpha-XBP1s pathway promotes prostate cancer by activating c-MYC signaling. Nature Communications . 2024;15(1): 6190
ho sheng
No full textÓrgano de boca de procedencia china inventado cerca del siglo III A. C.1) Procedencia: China
2) Estado de conservación: Bueno
3) Uso (Características performáticas): La invención del Sheng es atribuida al soberano chino Nyú-Kwa (ca. 2800 A.C.). Se lo menciona desde el Siglo XII A.C. aunque no existen representaciones hasta el siglo VI de nuestra era. Hay diferentes variedades que se distinguen por su tamaño y por el número y función de los tubos. El sheng se ejecuta sosteniendo el recipiente con las palmas de ambas manos mientras se sopla o aspira por el pico y se obturan simultáneamente varios de los orificios de digitación. En el legajo se menciona que el instrumento es la representación simbólica de un “ave fénix”, aunque no se menciona bibliografía respaldatoria y llama la atención la mención al mito greco-romano en este otro contexto cultural (lo cual deja abierto el interrogante para futuras indagaciones de posibles intercambios y/o reinterpretaciones).
4) Historia (Eventos, actores, lugares, historias de uso, donantes, etc): No se encuentra nota de donación ni factura de compra. El ejemplar fue interpretado por Federico Jaureguiberry del grupo Mister América en el ciclo “Azzarini sónico”, noviembre de 2022. Colección Azzarini, 1964.
5) Reparaciones/Curaduría: No se realizaron
6) Referencias bibliográficas: Legajo Museo Azzarini, s/a. Museo Azzarini (1990) Instrumentos Musicales. Napoli: Coop. Laborart Associazione Culturale A.S.C
7) La fecha consignada (1964) corresponde a la creación de la colección Azzarini.
8) Información procesada en el marco del proyecto “(Re)Catalogación de los Instrumentos Musicales del Museo Azzarini-UNLP” 2022-2023, sujeta a modificaciones. Consultas y/o sugerencias especializadas: [email protected] de Instrumentos Musicales "Dr. Emilio Azzarini
Figs 35–42. Adults. 35. Scirpophaga magnella. 36. S. tongyaii. 37. S. linguatella. 38. S. adunctella. 39. S. khasis. 40. S. virginia. 41. S. lineata. 42. S in Taxonomic review of the subfamily Schoenobiinae (Lepidoptera: Pyraloidea: Crambidae) from China
No full textFigs 35–42. Adults. 35. Scirpophaga magnella. 36. S. tongyaii. 37. S. linguatella. 38. S. adunctella. 39. S. khasis. 40. S. virginia. 41. S. lineata. 42. S. auristrigella.Published as part of Chen, Fu-Qiang & Wu, Chun-Sheng, 2014, Taxonomic review of the subfamily Schoenobiinae (Lepidoptera: Pyraloidea: Crambidae) from China, pp. 163-208 in Zoological Systematics 39 (2) on page 178, DOI: 10.11865/zs20140201, http://zenodo.org/record/461732
A physical model and sound synthesis method of Chinese Sheng
No full textS.628-637To study the relationship between the physical structure and the timbre of Chinese Sheng, a physical model of Sheng and its sound synthesis method are proposed. Based on the vibration model of reed tongue, the equivalent circuit of Sheng pipe is constructed by considering the transfer matrices of tone hole and tuning slot. By combining the reed and the pipe, a complete physical model of Sheng is built. An experiment system of Sheng is designed to validate the physical model, and physical quantities of sounding Sheng pipe are measured simultaneously by multi-channels. The performance of this model is analyzed by comparing temporal-spectral features and timbre descriptors of measurement and simulation results. It shows that the proposed model simulates the sounding mechanism of Sheng pipe well, and the synthesized sound is able to capture the timbre-related features of real Sheng sound in an accurate way.41Nr.
MBER Space-Time Decision Feedback Equalization assisted Multiuser Detection for Multiple Antenna Aided SDMA Systems
No full textThis paper proposes a space-time decision feedback equalization (ST-DFE) assisted multiuser detection (MUD) scheme for multiple receiver antenna aided space division multiple access systems. A minimum bit error rate (MBER) design is invoked for the MUD, which is shown to be capable of improving the achievable bit error rate performance and enhancing the attainable system capacity over that of the standard minimum mean square error (MMSE) design. An adaptive implementation of the MBER ST-DFE assisted MUD is proposed using a stochastic gradient-based least bit error rate algorithm, which is demonstrated to consistently outperform the classical least mean square (LMS) algorithm, while achieving a lower computational complexity than the LMS algorithm for the binary signalling scheme. Our simulation results demonstrate that the MBER ST-DFE assisted MUD is more robust to channel estimation errors as well as to potential error propagation imposed by decision feedback errors, compared to the MMSE ST-DFE assisted MUD. Index Terms—Decision feedback equalizer, minimum bit error rate, minimum mean square error, multiple antennas, multipleinput multiple-output, multiuser detection, space-division multiple access, space-time processing
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Adaptive Bayesian Space-Time Equalisation for Multiple Receive-Antenna Assisted Single-Input Multiple-Output Systems
No full textThis contribution considers nonlinear space–time equalisation (STE) for multiple receive-antenna induced single-input multipleoutput (SIMO) systems. By exploiting the inherent symmetry of the underlying optimal Bayesian STE solution, a novel symmetric radial basis function (RBF) based STE scheme is proposed, which is capable of approaching the optimal Bayesian equalisation performance. Adaptive implementation of this symmetric RBF (SRBF) based STE can be achieved conveniently by estimating the SIMO channels using the least mean square channel estimator and computing the optimal RBF centres from the resulting SIMO channel matrix estimate. Simulation results also demonstrate that the performance of this SRBF based STE is robust with respect to the choice of the RBF variance value. The proposed adaptive solution is then extended to the space–time decision feedback equalisation (ST-DFE) structure
Reduced-rank adaptive least bit-error-rate detection in hybrid direct-sequence time-hopping ultrawide bandwidth systems
No full textDesign of high-efficiency low-complexity detection schemes for ultrawide bandwidth (UWB) systems is highly challenging. This contribution proposes a reduced-rank adaptive multiuser detection (MUD) scheme operated in least bit-errorrate (LBER) principles for the hybrid direct-sequence timehopping UWB (DS-TH UWB) systems. The principal component analysis (PCA)-assisted rank-reduction technique is employed to obtain a detection subspace, where the reduced-rank adaptive LBER-MUD is carried out. The reduced-rank adaptive LBERMUD is free from channel estimation and does not require the knowledge about the number of resolvable multipaths as well as the knowledge about the multipaths’ strength. In this contribution, the BER performance of the hybrid DS-TH UWB systems using the proposed detection scheme is investigated, when assuming communications over UWB channels modeled by the Saleh-Valenzuela (S-V) channel model. Our studies and performance results show that, given a reasonable rank of the detection subspace, the reduced-rank adaptive LBER-MUD is capable of efficiently mitigating the multiuser interference (MUI) and inter-symbol interference (ISI), and achieving the diversity gain promised by the UWB systems
Revisiting the lectotypifications of Senecio plantaginifolius, S. setchuenensis and S. souliei (Asteraceae: Senecioneae)
No full textLi, Cheng-Sheng, Chi, Xiao-Rui, Fei, Wen-Qun, Ren, Chen (2022): Revisiting the lectotypifications of Senecio plantaginifolius, S. setchuenensis and S. souliei (Asteraceae: Senecioneae). Phytotaxa 532 (1): 57-66, DOI: 10.11646/phytotaxa.532.1.
- …
