541 research outputs found
Reporte de los ataques de la nación Seri, 1763
No full textReporte de los ataques de la nación Seri de 1761 a 1763. Se nota el asesinato del gobernador Juan de Mendoza, otros militares españoles, e indígenas, el cautivo de mujeres, el robo de ganado y el saqueo de pueblos. —— Report on the attacks by the Seri nation from 1761 to 1763. It includes the assassination of Governor Juan de Mendoza, other Spanish military personnel, and indigenous people, the capture of women, cattle theft, and the plundering of towns. 3 f. (6 p.
Far Away from Human-land : Kafka’s Nonhumans in Günther Anders and Walter Benjamin
No full textIn 1934, Walter Benjamin published his major study Franz Kafka: Zur zehnten Wiederkehr seines Todestages. In the same year, Günther Anders, another German Jew in exile, gave a lecture on Kafka which later, in postwar years, developed into a small book titled Kafka, Pro und Contra. Bringing these two in dialogue—the much-celebrated essay by Benjamin and the generally overlooked book by Anders—the paper offers a joint and comparative reading of the two thinkers on the category of nonhuman in Kafka. Kafka, according to both Anders and Benjamin, views the human being as homo alienatus. His work—abounding with nonhuman protagonists from nimble spools through inquisitive dogs to lethal apparatus—repeatedly and brutally challenges the notion of the human being and her place in the world. Anders’ Marxian prism joined with Benjamin’s fantastic-historical lens offers an insight into alienation as the rift between the modern commodification of world and self and the primordial animality of the human body. Through Benjamin’s messianic hope and Anders’ urgent warning, the paper seeks to overturn the nonhuman in Kafka and recover a positive notion of human in a contemporary world
Walter Benjamin and Günther Anders on Kafka and the Role of Literature
No full textWhat is the political significance of literature? How, if at all, can fictional narratives interact with issues of social and legal justice? This paper addresses these questions and proposes four models of literature\u27s intervention in political reality based on Walter Benjamin’s and Günther Anders’ readings of Kafka. According to Benjamin’s 1930s Kafka essays, fictional narratives have the power to unsettle hitherto established legal decisions and thus partake in the exercise of justice. Anders, in his 1951 book Kafka: Pro und Contra, criticises Kafka for authoring narratives that—complacent with existing power—lend themselves to being used to morally absolve acts of oppression. Taken together, the four models—two of which are based on Benjamin\u27s Kafka reading and two on Anders\u27—offer a complex view of the role of literature as a political actor, recognising its positive value while warning against its potential abuse
New solid-supported reagents (SSRs) for selective acylation of amines
No full textThe pyrimidine linker (4) was prepared by solid phase synthesis starting from Merrifield resin. Acylation of 4 with different acyl chlorides gave polymerbound 4-acyloxypyrimidines (2a-c), which proved to be useful solid-supported reagents for the selective acylation of amines. Their use in solution combinatorial chemistry has been also envisaged. (author abst.
Novel methods for fatigue data editing for horizontal axis wind turbine blades
No full textWind turbine blades are the most critical components of wind turbines. Full-scale blade fatigue testing is required to verify that the blades possess the strength and service life specified in the design. Unfortunately, the test must be run for a long time period. This problem led the blade testing laboratories to accelerate fatigue testing time. To achieve the objective, this thesis proposes two novel methods called STFT- and WT-based fatigue damage part extracting methods which are based on short-time Fourier transform (STFT) and wavelet transform (WT), respectively. For WT, different wavelet functions which are Morl, Meyr, Dmey, Mexh and DB30 are studied.
An aerodynamic computer code, HAWTsimulator, based on blade element momentum theory has been developed. This code is used to generate the sets of aerodynamic loads acting along the span of a ‘SERI-8 wind turbine blade’ in the range of wind speed from cut-in to cut-out. SERI-8 blades are installed on 65 kW wind turbines. Each set of aerodynamic loads is applied on the finite element model of the SERI-8 blade in structural software (ANSYS) to generate a plot of von Mises stress at the critical point on the blade versus wind speed. By relating this relationship to the wind speed data, the stress-time history at the critical point on the SERI-8 blade can be generated. It has the same sampling rate and length as the wind speed data.
A concept of applying accumulative power spectral density (AccPSD) distribution with time to identify fatigue damage events contained in the stress-time history has been introduced in this thesis. For STFT, AccPSD is the sum of power spectral density (PSD) of each frequency band at each time interval in the spectrogram. For WT, AccPSD is the sum of PSD of wavelet coefficients of each scale at each time interval in the scalogram. It has been found that the locations of AccPSD spikes imply where the fatigue damage events are. Based on an appropriate AccPSD level called a cutoff level, the fatigue damage events can be identified at time location of the stress-time history.
A fatigue computer code, HAWTfatigue, based on stress-life approach and Miner’s linear cumulative damage rule has been developed. Basically, the code is used for evaluating the fatigue damage and service lifetime of horizontal axis wind turbine blade. In addition, the author has implemented STFT- and WT-based fatigue damage part extracting methods into the code. Fatigue damage parts are extracted from the stress time history and they are concatenated to form the edited stress-time history. The effectiveness of STFT- and WTbased algorithms is performed by comparing the reduction in length and the difference in fatigue damage per repetition of the edited stress-time histories generated by STFT and WT to those of the edited stress-time history generated by an existing method, Time Correlated Fatigue Damage (TCFD) used by commercial software.
The findings of this research project are as follows:
1. The comparison of the reduction in length of the edited stress-time histories generated by TCFD, STFT and WT indicates that WT with the Mexh wavelet has the maximum reduction of 20.77% in length with respect to the original length, followed by Meyr (20.24%), Dmey (19.70%), Morl (19.66%), DB30 (19.19%), STFT (15.38%), and TCFD (10.18%), respectively.
2. The comparison of the retained fatigue damage per repetition in the edited stress-time histories generated by TCFD, STFT and WT indicates that TCFD has the retained fatigue damage per repetition less than the original fatigue damage per repetition by 0.076%, followed by Mexh (0.068%), DB30 (0.063%), STFT (0.045%), Meyr (0.032%), Dmey (0.014%), and Morl (0.013%), respectively.
3. Both comparison of reduction in length and comparison in the retained fatigue damage per repetition of the edited stress-time histories suggest that WT is the best method for extracting fatigue damage parts from the given stress-time history. It has also been indicated that not only do STFT and WT improve accuracy of fatigue damage per repetition retained in the edited stress-time histories, but also they provide the length of the edited stress-time histories shorter than TCFD does. Thus, STFT and WT are useful methods for performing accelerated fatigue tests.
4. It has been found that STFT is controlled by two main factors which are window size and cutoff level. Also, WT is controlled by three main factors which are wavelet decomposition level, cutoff level and wavelet type.
To conclude, the edited stress-time history can be used by blade testing laboratories to accelerate fatigue testing time. STFT- and WT-based fatigue damage part extracting methods proposed in this thesis are suggested as alternative methods in accelerating fatigue testing time, especially for the field of wind turbine engineering
SERI Surgical Scaffold as an Adjunct to Conventional Brachioplasty
No full textSummary: Although the popularity of longitudinal brachioplasty has grown tremendously in recent years, dealing with the unpredictable scar remains a challenge for the surgeon and the patient. The scar often heals slowly and widens over time, perpetuated by the effects of gravity, body movements, and the thin nature of the superficial fascial system (SFS) of the arm. Scar widening may correlate with recurrence of the soft-tissue deformity as the repaired underlying SFS stretches. Therefore, techniques that support and stabilize the SFS are highly desirable for addressing the problematic scar. In the present case, the author used a silk-derived surgical scaffold (SERI) as an adjunct to conventional brachioplasty. SERI provided the requisite support for the patient’s SFS, resulting in a faster maturation process and a better-quality scar. This stands in stark contrast to the majority of longitudinal brachioplasty results reported in the medical literature
State-based measurement of emotion regulation: The Turkish versions of SERI and S-DERS
No full textRecent studies emphasize the importance of state-based measurement of emotion regulation because of its context-sensitive and flexible background. In many studies, emotion regulation is measured as state-based as well as trait-based; however, only a few offers standard measurements. The State Emotion Regulation Inventory (SERI) and the State-Difficulties in Emotion Regulation (S-DERS) are standardized scales specifically designed for this purpose. Ultimately, the aim of this study was to adapt these scales into Turkish and investigate their psychometric properties using a laboratory-based emotion induction procedure. The data were collected from 167 undergraduate students. They first filled out trait-based scales, were then recruited to the stage of negative emotional state induction, and, finally, responded to the question in the SERI and the S-DERS to evaluate their emotion regulation experiences during the emotion induction phase. As a result, we confirmed the four-factor structures of the scales with good internal consistencies. While the SERI had weak associations with emotion dysregulation, thought control, and psychological distress, the S-DERS had strong relationships with these variables. Moreover, the incremental validities of the SERI and the S-DERS were acceptable when predicting both negative emotional state and psychological distress. Overall, our results suggest that the SERI and S-DERS are psychometrically valid and reliable measurements to assess state emotion regulation in Turkish speakers. © 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature
Throughput optimization of wireless sensor networks in presence of Rician fading channel
No full textProgramlanabilir seri haberleşme test ortamı tasarımı ve geliştirilmesi
No full textBu çalışma, RS232, RS422 veya RS485, SPI ve I2C seri haberleşme protokollerini tek bir cihazda USB'ye dönüştürecek bir test ortamının tasarımını ve geliştirilmesini tanıtmaktadır. Bu amaçla, bir tarafında bilgisayara bağlanabilmek için USB arayüzü bulunan, diğer tarafında ise harici cihazlarla iletişim kurabilecek 4 adet kanala sahip bir prototip test cihazı tasarlanmıştır. Bu kanallar, yine tarafımızca geliştirilen bir yazılım kullanılarak farklı protokoller için yapılandırılabilir. Tasarlanan bu prototip test cihazı arayüz yazılımı olmadan da kullanılmak istenirse doğrudan bilgisayara bağlanabilir; bu durumda tüm kanallar varsayılan olarak RS232 (Kanal-1), RS-485 (Kanal-2) ve RS-422 (Kanal-3 ve Kanal-4) protokolleri olacak şekilde kullanılabilecektir. Bu çalışma sonucunda 5 farklı tipte seri haberleşme protokolünün test edilip kullanılabileceği, USB üzerinden bilgisayarla haberleşebilen, 4 bağımsız kanala sahip, mekanik anahtarlamalara gerek kalmadan yazılımla yapılandırılabilen kompakt bir test cihazı tasarımı yapılmıştır. Çalışmanın içeriğinde bu prototip test cihazının piyasadaki diğerler kutulardan farklılıklarına, kompakt yapısına, Altium ile PCB tasarımına, yazılımına, arayüzüne, farklı seri iletişim protokolleri ile kullanım kombinasyonlarına ve geliştirme kartlarıyla yapılan performans test sonuçları yer almaktadır.Anahtar Kelimeler : Seri haberleşme, USB to UART, USB to SPI, USB to I2C, USB Seri dönüştücüler, TestThis work introduces the design and development of a test environment that will convert RS-232, RS-422 or RS-485, SPI and I2C serial communication protocols into USB in a single device. For this purpose, a test box is designed with a USB interface on one side to connect to the computer and 4 ports that can communicate with external devices on the other side. These ports can be configured for different protocols using software developed by author. If the test box is to be used without interface software, it can be connected directly to the computer; In this case, all ports can be used as RS232 (port-1), RS-485 (port-2) and RS-422 (port-3 and port-4) protocols by default. As a result of this study, a compact test box design was designed, in which 5 different types of serial communication protocols can be tested and used, which can communicate with the computer via USB, with 4 independent ports, and which can be configured with software without the need for mechanical switching. The content of the study includes the differences of this test box from others on the market, its compact structure, PCB design with Altium, software, interface, usage combinations with different serial communication protocols, and performance test results with development boards.Key Words : Serial communication, USB to UART, USB to SPI, USB to I2C, USB to serial converters, Test </p
El sistema anual de sincronización del tiempo entre los comcaac (seris). 2 Año 1 (2014) abril-junio. Rutas de Campo. Documentación lingüística
No full textMoser, Mary B. y Stephen A. Marlett (comps.), Comcáac quih yaza quih hant ihiip hac. Diccionario seri-español-inglés, México, Universidad de Sonora/Plaza y Valdés, 2010.Moser, E. W., “Seri Bands”, en The Kiva, vol. 28, 1963, pp. 14- 27, en línea [www.sil.org/americas/mexico/seri/A004-BandasSeris-SEI.pdf]
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