http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Soria Edmar(소리아 에드마) 한국전자음악협회 2017 에밀레 Vol.15 No.-
공간 사운드 궤도<SUB>spatial sound trajectories</SUB>는 청중에게 몰입적 소리 경험을 가져다 줄 수 있는 작곡 재료로서 강력한 도구이다. 이 글은 저자가 프로그래밍 언어 수퍼콜라이더<SUB>Supercollider</SUB>에서 제작한 공간화 도구 알고리듬을 사용하여 만든 혼돈 동력 시스템<SUB>chaotic dynamical systems</SUB> 기반의 공간 사운드 궤도를 만들어내는 알고리듬적 접근법을 기술한다. 초기 특정 상태들에 맞추어진 특정한 동력 시스템의 저장된 반복처리<SUB>iterations</SUB>나 궤도를 사용하여 알고리듬의 행위 <SUB>gesture</SUB>라 불릴수 있는 것의 근거들을 마련해놓음으로써 매핑-소리화<SUB>mapping-sonification</SUB> 과정 시 일어나는 정적상태의 일반적인 문제점을 감소시킬 수 있는 혼합<SUB>hybridization</SUB> 과정을 만들어낸다. 이것이 하나의 데이터 소스를 하나의 소리 정보<SUB>parameter</SUB>로 연결하는 행위적<SUB>gestural</SUB> 매핑을 만들어내도록 하는 원리이다. 이러한 접근법으로 다채널 스피커 배치구성<SUB>configuration</SUB> 내 사운드 궤도가 충분한 자연성과 행위성을 가지고 수행될 수 있다. Spatial sound trajectories are powerful tools in multichannel electroacoustic music since as compositional resources they could lead to an immersive sound experience on the listener. This paper shows an algorithmic approach for creating spatial sound trajectories based on chaotic dynamical systems using a spatialization tool algorithm developed by the author in programming language Supercollider. Using the stored iterations or orbits of a specific dynamical system for a specific set of initial conditions the model generates hybridization process that seek to reduce the common problems of staticity that rise in mapping-sonification process by developing the foundations of what could be called algorithmic gesture. This is a concept that seeks to develop gestural mappings from any data source into any sonic parameter. With this approach, sound trajectories inside multichannel loudspeaker configuration can be created with a very acceptable degree of naturality and gestuality.
José M. Soria,Ivan M. Díaz,Jaime H. García-Palacios 국제구조공학회 2017 Smart Structures and Systems, An International Jou Vol.20 No.5
This paper explores different vibration control strategies for the cancellation of human-induced vibration on a structure with time-varying modal parameters. The main motivation of this study is a lively urban stress-ribbon footbridge (Pedro Gómez Bosque, Valladolid, Spain) that, after a whole-year monitoring, several natural frequencies within the band of interest (normal paring frequency range) have been tracked. The most perceptible vibration mode of the structure at approximately 1.8 Hz changes up to 20%. In order to find a solution for this real case, this paper takes the annual modal parameter estimates (approx. 14000 estimations) of this mode and designs three control strategies: a) a tuned mass damper (TMD) tuned to the most-repeated modal properties of the aforementioned mode, b) two semi-active TMD strategies, one with an on-off control law for the TMD damping, and other with frequency and damping tuned by updating the damper force. All strategies have been carefully compared considering two structure models: a) only the aforementioned mode and b) all the other tracked modes. The results have been compared considering human-induced vibrations and have helped the authors on making a decision of the most advisable strategy to be practically implemented.
Generalized Quadrature Spatial Modulation Scheme Using Antenna Grouping
Francisco Ruben Castillo-Soria,Joaquın Cortez-Gonzalez,Raymundo Ramirez-Gutierrez,Fermın Marcelo Maciel-Barboza,Leonel Soriano-Equigua 한국전자통신연구원 2017 ETRI Journal Vol.39 No.5
This paper presents a novel generalized quadrature spatial modulation (GQSM) transmission scheme using antenna grouping. The proposed GQSM scheme combines QSM and conventional spatial multiplexing (SMux) techniques in order to improve the spectral efficiency (SE) of the system. Analytical and simulation results show that the proposed transmission scheme has minimal losses in terms of the average bit error probability along with the advantage of an increased SE compared with previous SM and QSM schemes. For the case studies, this advantage represents a reduction of up to 81% in terms of the number of required transmit antennas compared with QSM. In addition, a detection architecture based on the ordered successive interference cancellation scheme and the QR decomposition is presented. The proposed QRD-M adaptive algorithm showed a near-maximum-likelihood performance with a complexity reduction of approximately 90%.
Relay-assisted multiuser MIMO-DQSM system for correlated fading channels
Francisco R. Castillo-Soria,Carlos Gutierrez,Fermin M. Maciel-Barboza,Viktor I. Rodriguez Abdala,Jayanta Datta 한국전자통신연구원 2024 ETRI Journal Vol.46 No.2
This paper presents the performance evaluation of an amplify-and-forward (AF) relay-assisted multiuser multiple input-multiple output (MU-MIMO) downlink transmission system for correlated fading channels. The overall system performance was improved by incorporating a double-quadrature spatial modulation (DQSM) scheme. The bit error rate (BER) performance and detection complexity of the AF-MU-MIMO-DQSM system were analyzed and com-pared with those of a conventional AF-MU-MIMO system under the same conditions and parameters. The results showed that the correlated fading channel severely affected the performance of systems with higher spectral efficiency (SE). Considering an SE of 12 bpcu/user, the AF-MU-MIMO-DQSM system yielded a gain of up to 3 dB in BER performance compared with that of its conventional counterpart for the analyzed cases. In terms of detection com-plexity, the AF-MU-MIMO-DQSM system showed a reduction of up to 56 % compared with that of the conventional system for the optimal maximum likelihood detection criterion.
Ad-hoc vibration monitoring system for a stress-ribbon footbridge: from design to operation
Iban, Norberto,Soria, Jose M.,Magdaleno, Alvaro,Casado, Carlos,Diaz, Ivan M.,Lorenzana, Antolin Techno-Press 2018 Smart Structures and Systems, An International Jou Vol.22 No.1
Pedro $G{\acute{o}}mez$ Bosque footbridge is a slender and lightweight structure that creates a pedestrian link over the Pisuerga River, Valladolid, Spain. This footbridge is a singular stress ribbon structure with one span of 85 m consisting on a steel plate and precast concrete slabs laying on it. Rubber pavement and a railing made of stainless steel and glass complete the footbridge. Because of its lively dynamics, prone to oscillate, a simple and affordable structural health monitoring system was installed in order to continuously evaluate its structural serviceability and to estimate its modal parameters. Once certain problems (conditioning and 3D orientation of the triaxial accelerometers) are overcome, the monitoring system is validated by comparison with a general purpose laboratory portable analyzer. Representative data is presented, including acceleration magnitudes and modal estimates. The evolution of these parameters has been analysed over one-year time.
Ad-hoc vibration monitoring system for a stress-ribbon footbridge: from design to operation
Norberto Iban,Jose M. Soria,Alvaro Magdaleno,Carlos Casado,Ivan M. Diaz,Antolin Lorenzana 국제구조공학회 2018 Smart Structures and Systems, An International Jou Vol.22 No.1
Pedro Gómez Bosque footbridge is a slender and lightweight structure that creates a pedestrian link over the Pisuerga River, Valladolid, Spain. This footbridge is a singular stress ribbon structure with one span of 85 m consisting on a steel plate and precast concrete slabs laying on it. Rubber pavement and a railing made of stainless steel and glass complete the footbridge. Because of its lively dynamics, prone to oscillate, a simple and affordable structural health monitoring system was installed in order to continuously evaluate its structural serviceability and to estimate its modal parameters. Once certain problems (conditioning and 3D orientation of the triaxial accelerometers) are overcome, the monitoring system is validated by comparison with a general purpose laboratory portable analyzer. Representative data is presented, including acceleration magnitudes and modal estimates. The evolution of these parameters has been analysed over one-year time.
Hoque, M.O.,Soria, J.C.,Woo, J.,Lee, T.,Lee, J.,Jang, S.J.,Upadhyay, S.,Trink, B.,Monitto, C.,Desmaze, C.,Mao, L.,Sidransky, D.,Moon, C. American Association of Pathologists and Bacteriol 2006 The American journal of pathology Vol.168 No.4
The aquaporins represent a family of transmembrane water channel proteins that play a major role in trans-cellular and transepithelial water movement. Most tumors have been shown to exhibit high vascular permeability and interstitial fluid pressure, but the transport pathways for water within tumors remain unknown. Here, we tested 10 non-small cell lung cancer cell lines of various origins by reverse transcriptase-polymerase chain reaction and Western blot analysis and identified clear expression of aquaporin 1 (AQP1) in seven cell lines. We next examined the distribution of the AQP1 protein in several types of primary lung tumors (16 squamous cell carcinomas, 21 adenocarcinomas, and 7 bronchoalveolar carcinomas) by immunohistochemical staining. AQP1 was overexpressed in 62% (13 of 21) and 75% (6 of 8) of adenocarcinoma and bronchoalveolar carcinoma, respectively, whereas all cases of squamous cell carcinoma and normal lung tissue were negative. Forced expression of full-length AQP1 cDNA in NIH-3T3 cells induced many phenotypic changes characteristic of transformation, including cell proliferation-enhancing activity by the MTT assay and anchorage-independent growth in soft agar. Although further details on the molecular function of AQP1 related to tumorigenesis remain to be elucidated, our results suggest a potential role of AQP1 as a novel therapeutic target for the management of lung cancer.
Pavel Celis,Elisa Vazquez,Cintya G. Soria-Hernández,Diego Bargnani,Ciro A. Rodriguez,Elisabetta Ceretti,Erika García-López 한국정밀공학회 2022 International Journal of Precision Engineering and Vol.9 No.5
The use of nanoadditives in lubricants has gained much attention to the research community due to the enhancement of tribological properties and cooling capabilities. This paper studies the advantages of using a MQL (Minimum Quantity of Lubrication) system and nanoadditive in the manufacture of microneedle arrays in Ti6Al4V ELI alloy. Tungsten carbide ball nose tools with a cutting diameter of 200 μm were used in experimental tests. Surface and dimensional characterization was performed to evaluate the impact of a nanoadditive to a vegetable-based oil. Additionally, cutting forces and cutting edge radius (CER) were measured while needles were machined. Experimental tests confirmed that micro end milling with nanoadditives provide slightly better dimensional features and low cutting forces compared to oil. The performance of nanoadditives resulted in a reduction of surface roughness (~ 0.3 μm). Qualitative study of microneedles illustrated burr formation on needle surface manufactured without a nanoadditive solution. Results reveal an increment of CER using low feed rate values (2.0 μm/flute) while a reduction of CER was observed with feed rates up to 2.5 μm/flute. Our results indicated that the addition of nanoadditives to vegetable oil promotes a better product surface topography and cutting tool performance.