Relevant bibliographies by topics / BER

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'BER'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 July 2024

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Journal articles on the topic "BER"

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Pricilya, Vyatri, Bambang Wirjatmadi, and Merryana Andriani. "DAYA TERIMA PROPORSI KACANG HIJAU (PHASEOLUS RADIATA L) DAN BEKATUL (RICE BRAN) TERHADAP KANDUNGAN SERAT PADA SNACK BAR." Media Gizi Indonesia 10, no. 2 (January 21, 2017): 136–40. http://dx.doi.org/10.20473/mgi.v10i2.136-140.

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Snack bar is a product made from cereal and nuts that usually consumed between meals. Commercial snack bar contains energy, protein, and fiber. The fiber content in it is usually 1 gram per 25 grams serving. The fiber content is relatively low because food categorized as high fi ber if it has 5 grams per 100 gram products. Therefore, a new innovation to improve its fi ber content is required. Green bean and rice bran are type of food with high fiber content that possible to be added in snack bar. The purpose of this research was to determine the acceptability and fi ber content in snack bar. This was true experimental research with complete random design (CRD) with 5 treatments. Organoleptic test to assess acceptability of the snack bar was done by 5 trained panelists and 30 non trained panelists. Fiber contentwas calculated using Indonesia Food Composition Database and also analyzed by proximate test in laboratory. The result showed that formula 3 had the highest score than other formulas. Laboratory result showed fi ber content in formula 3 was 1.98 grams per 25 grams snack bar. The conclusion of this research is the snack bar with proportion of green beans and rice bran has a good acceptability and higher fi ber content compared to commercial snack bar.Keywords: fi ber, green beans, rice bran, snack bar
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Poelt, Josef, and Helmut Mayrhofer. "�ber Cyanotrophie bei Flechten." Plant Systematics and Evolution 158, no. 2-4 (1987): 265–81. http://dx.doi.org/10.1007/bf00936350.

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Vallejo, Roger L., Wanda W. Collins, and Robert H. Moll. "Inheritance of A and B Glandular Trichome Density and Polyphenol Oxidase Activity in Diploid Potatoes." Journal of the American Society for Horticultural Science 119, no. 4 (July 1994): 829–32. http://dx.doi.org/10.21273/jashs.119.4.829.

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Glandular trichomes from some Solanum species have suppressed infestation by insects including green peach aphid, which is a main vector of potato virus Y (PVY) and potato leaf roll virus (PLRV), both of which contribute to a serious loss in potato production. Eight Solanum phureja Juz. et Buk.-S. stenotomum Juz. (Phu-Stn), three S. berthaultii Hawkes (Ber), nine F1 [(Phu-Stn) × Ber], fifteen backcross (BC) [(Phu-Stn) × F1], and seventeen reciprocal BC (BCR) [F1 × (Phu-Stn)] families were evaluated to determine the genetic variability and heritability of A and B glandular trichome density and polyphenol oxidase (PPO) activity. Experiments were carried out in completely randomized and randomized complete-block designs in the greenhouse. Genetic analysis was done using half-sib family and parent-offspring regression analysis. Phu-Stn showed a higher density of A trichomes than Ber and F1, while the BC and BCR had densities of A trichomes similar to Phu-Stn. B trichomes were not observed in Phu-Stn. Ber showed a high B trichome density, which was transmitted to the F1. In the BC, B trichomes were almost absent, but, in the BCR, the density of B trichomes was higher than that of BC. Ber and F1 had similar or higher PPO activity than Phu-Stn. PPO activity decreased in the BC, but, in the BCR, it was high and similar to Ber and F1. Broad-sense heritability estimates for A and B trichome density and PPO activity were from medium to high (0.48 to 0.77) in Phu-Stn, Ber, and F1. Narrow-sense heritability estimates for A and B trichome density and PPO activity were very low (0.04 to 0.24) in BC and BCR. In the BC families, additive genetic variance was very low for A and B trichome density and PPO activity. Half-sib family selection based on progeny testing and combined with BCs to Phu-Stn in subsequent generations would be a suggested breeding procedure to improve these traits. Phenotypic correlations between A and B trichome densities were 0.26 (F1) and 0.44 (BCR), between A trichome density and PPO activity 0.20 (F1) and 0.31 (BCR), and between B trichome density and PPO activity 0.04 (F1) and 0.27(BCR. Positive associations found between traits might facilitate simultaneous improvement for high levels of A and B trichome density and PPO activity.
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Mayo, Lisa, Gloria Miguel, and Muriel Miguel. "Reverb‐ber‐ber‐rations1." Women & Performance: a journal of feminist theory 5, no. 2 (January 1992): 184–212. http://dx.doi.org/10.1080/07407709208571159.

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Wolf, R., and R. Hoppe. "Neues �ber Oxouranate: �ber ?-Li6UO6. Mit einer Bemerkung �ber ?-Li6UO6." Zeitschrift f�r anorganische und allgemeine Chemie 528, no. 9 (September 1985): 129–37. http://dx.doi.org/10.1002/zaac.19855280914.

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Kindjic, Zoran. "Kantovo shvatanje uma." Filozofija i drustvo, no. 25 (2004): 43–99. http://dx.doi.org/10.2298/fid0525043k.

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(nemacki) Der Verfasser befasst sich zuerst mit den theoretischen und gesellschaftlich - geschichtlichen Voraussetzungen der Konzeption der Vernunft Kants. Kants Auseinandersetzung mit dem Problem der Metaphysik, wie auch die Aufgaben einer philosophischen Begr?ndung der Wissenschaft und einer Grundlegend der Ethik, haben die Einf?hrung eines Unterschieds zwischen Verstand und Vernunft, Kategorien und Ideen, bzw. der theoretischen und der praktischen Sph?re bedingt. Nach einer Betrachtung der Konstitution Rolle des Verstandes und des Regulativen Gebrauchs der Ideen in der theoretischen Sph?re untersuchte der Autor Kants Auffassung ?ber die Konsumtion Rolle der Vernunft in der praktischen Sph?re. Sich auf seine Lehre vom Primat der praktischen ?ber die theoretischen Vernunft, bzw. vom Primat der Moralit?t ?ber die Wissenschaft st?tzend, stellt der Verfasser fest, dass f?r eine Zivilisieren der Verstand gen?gt, aber f?r eine Moralisieren die Vernunft unentbehrlich ist. Bei seiner Betrachtung von Kants Versuch der ?berbr?ckung des Abgrunds zwischen Natur und Freiheit durch die Einf?hrung der reflektierenden Urteilskraft, verweist der Autor auf eine ?hnlichkeit zwischen der Vernunft und der reflektierenden Urteilskraft bez?glich ihrer Regulativen Rolle in der theoretischen Erkenntnis. Die Untersuchung des Verh?ltnisses zwischen Natur und Vernunft in der Philosophie von Kant, wie auch die Konfrontation der Konzeptionen der Vernunft von Kant und Hegel bietet die Voraussetzungen f?r das Verstehen eines ambivalenten Verh?ltnisses des K?nigsberg Denkers zur Revolution. Nach einer ?berpr?fung des Urteils von Lukacs ?ber Kant als einem typischen Vertreter des b?rgerlichen Denkens, er?rtert der Verfasser am Ende der Studie, ob uns Kants Philosophie helfen kann, die Krise zu ?berwinden, in der sich die Menschheit heute befindet. .
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Wagner, Klaus. "�ber den Steuerbarkeitsbegriff bei nichtlinearen Kontrollsystemen." Archiv der Mathematik 47, no. 1 (July 1986): 29–40. http://dx.doi.org/10.1007/bf01202497.

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Greher, M., P. Marhofer, M. Neuburger, and H. Kaiser. "Ber�cksichtigung der Anatomie bei Plexusblockade." Der Anaesthesist 53, no. 4 (April 2004): 374–75. http://dx.doi.org/10.1007/s00101-004-0655-7.

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K�hnau, Reiner. "�ber den Verschiebungsradius bei konformer Abbildung." Mathematische Annalen 299, no. 1 (May 1994): 779–84. http://dx.doi.org/10.1007/bf01459813.

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Scheffold, Egon. "�ber den Spektralradius bei kommutativen Banachverbandsalgebren." Archiv der Mathematik 44, no. 4 (April 1985): 365–68. http://dx.doi.org/10.1007/bf01235781.

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Dissertations / Theses on the topic "BER"

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Geller, Joseph. "The manuscript version of the memoirs of Dov Ber Birkenthal (Ber of Bolochew)." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22375.

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This thesis is concerned with the manuscript of the memoirs of Dov Ber Birkenthal, Ber of Bolechow. The memoirs describe Jewish existence in eighteenth century Poland and provide valuable information regarding economic, social and cultural matters of that era. Uncovered in 1912, the manuscript was edited and published in Hebrew and translated into English by Dr. M. Vishnitzer.
By primary supposition of the present thesis is that Dr. Vishnitzer's transcription of the manuscript is inaccurate, and for this reason, a re-working of the memoirs has been undertaken. In addition to providing an authentic transcription of the manuscript, this thesis also contains a description of Birkenthal's life, an analysis of the uniqueness of this somewhat exceptional person and an account of how the memoirs have been used in the literature. Moreover, the historical value of the memoirs has been assessed, and an indepth analysis of the flaws contained in Vishniter's transcription has been provided.
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Ortega, Blanco Rubén. "Análise de SNIR e BER para redes acústicas submarinas." reponame:Repositório Institucional da UnB, 2015. http://repositorio.unb.br/handle/10482/19534.

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Dissertação (mestrado)—Universidade de Brasília, Faculdade de Tecnologia, Departamento de Engenharia Elétrica, 2015.
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O objetivo do seguinte trabalho é determinar um modelo matemático que permita-nos obter a Relação Sinal Ruído mais Interferência (SNIR do Inglês Signal-to-Noise plus Interference Ratio), a Taxa de Erro de Bits (BER do Inglês Bit Error Rate) de um salto e a Taxa de Erro de Bits fim-a-fim numa rede acústica submarina. Com esse propósito foi desenvolvido um modelo matemático que permite o cálculo destes parâmetros considerando a interferência para o protocolo de acesso ao meio (MAC do Inglês Medium Access Control) ALOHA puro. Também foi necessário desenvolver antes diferentes parâmetros da rede, tais como, distância média do salto, distância média até o nó central, distância média entre os nós, número médio de saltos na rota e desvio médio. Com o uso deste modelo também é possível obter o valor da frequência ótima utilizando uma função de otimização. Comparações entre a Taxa de Erro de Bits de um salto e fim-a fim também forem feitas, para diferentes valores de máximo ângulo de desvio na topologia de rede usada. Estas comparações demonstran quando pode ser mais convenente o uso de um salto ou múltiple-salto. Simulações Monte-Carlo e modelo forem comparados com o propósito de validar os resultados obtidos. Estas comparações demostram a grande similitude entre nosso modelo e as simulações de Monte-Carlo. Além disso foi possível o estudo do comportamento da SNIR e do BER variando importante parâmetros da rede tais como frequência de transmissão, número de nós, raio da esfera e máximo ângulo de desvio. Os resultados obtidos provarem que a SNIR para um salto diminui com o aumento do número de nós e o raio da esfera, mas aumenta com o incremento da potência de transmissão. O comportamento de BER é contrário ao comportamento de SNIR. Também foi possível observar a existência da frequência ótima, onde os melhores valores de SNIR e o BER são obtidos. ______________________________________________________________________________________________ ABSTRACT
The objective of this work is to nd a mathematical model that allow us to obtain the Signal-to-Noise plus Interference Ratio (SNIR), the One-Hop Bit Error Rate (BER) and the End-to-End Bit Error Rate for an Underwater Acoustic Network (UAN). Considering this, it was developed a model that includes the interference as an important impairment and for ALOHA MAC (Medium Access Control) protocol. In addition, it was necessary to obtain before several parameters from the network, such as, average distance of the hop, average distance between nodes, average distance to the central node, average number of hops and average deviation. With this model, it is also possible to nd the optimal value of frequency using an optimization function. It was made comparisons between the One-Hop BER and the End-to-End BER for various values of maximal deviation angle. This comparison shows when it is more adequate to either use one-hop or multi-hop. Finally, we compared numerical and Monte-Carlo simulation results, giving a rst validation to our model. These comparisons show a big similitude between the developed model and the Monte-Carlo simulation. In addition, it was possible to analyse the behaviour of the SNIR and BER by varying important parameters of the network, such as, transmission frequency, number of nodes and sphere radius among others. From the obtained results it was prove that the SNIR decreases with an increase from the number of nodes and the sphere radius, but increases with the transmission power. The End-to-End BER has an contrary behavior with the SNIR.
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Roy, Tamoghna. "BER Modeling for Interference Canceling Adaptive NLMS Equalizer." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/78055.

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Adaptive LMS equalizers are widely used in digital communication systems for their simplicity in implementation. Conventional adaptive filtering theory suggests the upper bound of the performance of such equalizer is determined by the performance of a Wiener filter of the same structure. However, in the presence of a narrowband interferer the performance of the LMS equalizer is better than that of its Wiener counterpart. This phenomenon, termed a non-Wiener effect, has been observed before and substantial work has been done in explaining the underlying reasons. In this work, we focus on the Bit Error Rate (BER) performance of LMS equalizers. At first a model – the Gaussian Mixture (GM) model – is presented to estimate the BER performance of a Wiener filter operating in an environment dominated by a narrowband interferer. Simulation results show that the model predicts BER accurately for a wide range of SNR, ISR, and equalizer length. Next, a model similar to GM termed the Gaussian Mixture using Steady State Weights (GMSSW) model is proposed to model the BER behavior of the adaptive NLMS equalizer. Simulation results show unsatisfactory performance of the model. A detailed discussion is presented that points out the limitations of the GMSSW model, thereby providing some insight into the non-Wiener behavior of (N)LMS equalizers. An improved model, the Gaussian with Mean Square Error (GMSE), is then proposed. Simulation results show that the GMSE model is able to model the non-Wiener characteristics of the NLMS equalizer when the normalized step size is between 0 and 0.4. A brief discussion is provided on why the model is inaccurate for larger step sizes.
Master of Science
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Laster, Jeffery D. "Robust GMSK Demodulation Using Demodulator Diversity and BER Estimation." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/30618.

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This research investigates robust demodulation of Gaussian Minimum Shift Keying (GMSK) signals, using demodulator diversity and real-time bit-error-rate (BER) estimation. GMSK is particularly important because of its use in promi- nent wireless standards around the world (GSM, DECT, CDPD, DCS1800, and PCS1900). The dissertation begins with a literature review of GMSK demodu- lation techniques (coherent and noncoherent) and includes an overview of single- channel interference rejection techniques in digital wireless communications. Vari- ous forms of GMSK demodulation are simulated, including the limiter discrimina- tor and di erential demodulator (i.e., twenty-five variations in all). Ten represent new structures and variations. The demodulator performances are evaluated in realistic wireless environments, such as additive white Gaussian noise, co-channel interference, and multipath environments modeled by COST207 and SMRCIM. Certain demodulators are superior to others for particular channel impairments, so that no demodulator is necessarily the best in every channel impairment. This research formally introduces the concept of demodulator diversity, a new idea which consists of a bank of demodulators which simultaneously demodulate the same signal and take advantage of the redundancy in the similar signals. The dissertation also proposes practical real-time BER estimation techniques which have tremendous ramifications for communications. Using Parzen's estimator for probability density functions (pdfs) and Gram-Charlier series approximation for pdfs, BER can be estimated using short observation intervals (10 to 500 training symbols) and, in some cases, without any training sequence. We also introduce new variations of Gram-Charlier estimation using robust estimators. BER (in place of MSE) can now drive adaptive signal processing. Using a cost function and gradient for Parzen's estimator (derived in this paper), BER estimation is applied to demodulator diversity with substantial gains of 1-10 dB in carrier- to-interference ratio over individual receivers in realistic channels (with adaptive selection and weighting). With such gains, a BER-based demodulator diversity scheme can allow the employment of a frequency reuse factor of N = 4, instead of N = 7, with no degradation in performance. A lower reuse factor means more channels are available in a cell, thus increasing overall capacity. The resulting techniques are simple and easily implemented at the mobile. BER estimation techniques can also be used in BER-based equalization and dynamic allocation of resources.
Ph. D.
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Montaldi, Ana Paula de Lima. "Avaliação da resposta celular mediada pelo quimioterápico temozolomida associada ao inibidor do reparo do DNA metoxiamina em linhagens de glioblastoma." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/17/17135/tde-02032010-154403/.

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Os gliomas compreendem mais de 70% de todos os tumores cerebrais primários. Mesmo com tratamento agressivo, a média de sobrevivência relatada para estes tumores é geralmente menor do que 1 ano após o diagnóstico. A quimioterapia baseada em agentes alquilantes, como a temozolomida (TMZ), tem mostrado, em média, uma modesta resposta e pequeno aumento da sobrevida. As principais lesões causadas pela TMZ são os aductos N7-metil-G e N3-metil-A, que são processados pelo reparo por excisão de base (BER), compreendendo mais de 80% das lesões induzidas no DNA pela TMZ. Há evidência de que a resistência a este quimioterápico pode ser causada em parte por um eficiente processo de reparo via BER, mas poucos estudos têm focalizado essa abordagem. Metoxiamina (MX) é um inibidor do reparo via BER que tem sido atualmente investigado como um possível aliado no combate a vários tipos de tumores, aumentando os efeitos citotóxicos de drogas, tais como a TMZ. No presente trabalho, foram avaliadas as respostas celulares de células de glioblastoma (GBM) ao tratamento com a TMZ, associada ou não à MX. Foram analisados parâmetros como citotoxicidade (24 h, Kit XTT), sobrevivência celular (120 h, Kit XTT) e clonogênica (10 dias após o tratamento), danos no DNA pelo Ensaio Cometa (2, 6, 12 e 24 h), a indução de apoptose (24, 48 e 72 h) e alterações na expressão gênica e transcricional (24, 48 e 72h) de genes envolvidos na via de reparo por BER. Sob tratamento das linhagens de GBM (U87, U343, U251, U138 e T98G) a diferentes concentrações de TMZ (100 a 1000 M), o efeito citotóxico foi observado em células analisadas após 120 h, sendo que a linhagem T98G foi a mais resistente ao tratamento com TMZ e foi a única a apresentar diferenças significativas entre o tratamento sozinho e combinado (p 0,05). Assim, foi selecionada a linhagem T98G para os demais experimentos e estudar as possíveis vias implicadas na resistência a essa droga. A sobrevivência clonogênica das células T98G foi reduzida, sob tratamento com a TMZ (100 a 800 M), com diferença significativas para as concentrações superiores a 400 M. Observou-se que o efeito da TMZ foi acentuado quando associada ao inibidor, com diferenças significativas para todas as concentrações testadas. A droga induziu uma maior porcentagem de danos no DNA (Ensaio Cometa) para ambos os tratamentos (400 e 600 M) e nos tempos de 2 e 6 h, com diferenças significativas entre os tratamentos (TMZ e TMZ+MX), somente na concentração de 600 M/2 h. Entretanto esses danos se equipararam nos tempos seguintes. A indução de apoptose analisada nas células T98G mostrou a freqüência máxima de 24,2% no tempo de 72h, na concentração de 600 M de TMZ, enquanto que uma maior indução de apoptose (47,7%) foi observada para a mesma concentração no tratamento combinado (TMZ + MX), resultando em diferenças significativas. A análise de expressão gênica realizada para os genes APE1, FEN1 e XRCC1, mostraram que houve uma menor indução dos genes APE1 e FEN1 no tratamento combinado. A expressão da proteína APE1 (analisada por Western blot) foi menos intensa em todos os tempos de tratamento combinado (TMZ + MX), possivelmente pelo bloqueio dos sítios AP causado pelo inibidor MX. A proteína FEN1 mostrou-se menos expressa na comparação dos tratamentos, nos tempos de 48 e 72 h, indicando uma inibição de proteínas da via BER downstream à remoção de sítios AP por APE1, possivelmente pela ligação de MX. PCNA teve sua expressão protéica aumentada no tratamento combinado, nos tempos de 24 h, e principalmente em 48 h, sugerindo uma indução devida a um aumento de danos no DNA. Portanto, os resultados dos ensaios realizados com a associação da TMZ à MX demonstraram a influência do tratamento combinado sobre a expressão de proteínas envolvidas no reparo via BER, o que contribuiu para uma redução da capacidade proliferativa das células T98G em decorrência da maior indução de danos por aductos DNA-MX não reparados, resultando também em aumento de morte celular apoptótica. Esses dados mostram que a modulação do reparo via BER pode constituir uma estratégia promissora para aumentar a eficácia do tratamento com a TMZ, o que poderá futuramente embasar a escolha de procedimentos terapêuticos que resultem numa maior eficácia do tratamento de gliomas com agentes alquilantes.
Gliomas represent more than 70% of primary brain tumors. Even following an aggressive therapies, the mean survival rate of patients with these tumors is less than one year after diagnosis. Chemotherapy based on alkyklating agents, such as temozolomide (TMZ) has been reported to increase the survival rate. N7-metyl-G and N3-metyl-A adducts comprise more than 80% of the DNA lesions induced by TMZ and are processed by the base excision repair process (BER). There is evidence in the literature suggesting that the resistance to TMZ could be caused, in part, by an efficient repair by BER pathway, although few studies have focused on this subject. Metoxiamine (MX) is an effective BER inhibitor, which has been investigated as a conceivable treatment for different kinds of tumor, due to its synergistic effect with antitumoral drugs, such as TMZ. In the present study, the cellular responses to TMZ treatment associated or not with MX were evaluated in giloblastoma (GBM) cell lines. Several parameters were analyzed, such as cytotoxicity (24 h), cellular survival (120 h) and clonogenic efficiency (10 days after treatment), DNA damage and repair kinetics (after 2, 6, 12 and 24 h of recovery time), apoptosis induction (24, 48 and 72 h) and alterations in gene expression (24, 48 e 72h) for genes playing role in BER pathway. The treatment with TMZ 100 -1000 M (during 24 h) was cytotoxic for all GBM cell lines tested (U87, U343, U251, U138 and T98G), as analyzed after 120 h, with the T98G cell line being be the most resistant to TMZ; besides, T98G was the only one to present significant differences (p 0,05) in survival rates measured between TMZ treatment and TMZ combined with MX. Thus, T98G cells were selected for the subsequent experiments and for the study of the pathways implicated in TMZ resistance. The clonogenic efficiency of T98G cells was reduced under TMZ treatment (100 - 800 M) with significant differences for treatments above 400 M. In addition, the combined treatment TMZ plus MX significantly increased the cytotoxic effects, even for the lowest concentration. The comet assay showed higher percentage of DNA damage for both treatment modalities (TMZ and TMZ+MX) at 2 and 6 h of recovery, with significant differences between treatments for 2 h. Following 12 and 24 h of recovery, the amount of DNA damage reached the control levels, indicating the repair of DNA breaks. Apoptosis induction in T98G cells showed the highest frequency (24.2%) at 72h for 600 M TMZ, while the highest apoptosis induction (47.7%) was observed for the same concentration combined to MX. Quantitative gene expression analysis performed for three genes, APE1, FEN1 and XRCC1, showed a reduced expression of APE1 and FEN1 for the combined treatment. Western blot analysis demonstrated that APE1 was less expressed for all kind of treatments, probably due to AP-sites blockade caused by the inhibitor MX. In addition, FEN1 showed low levels of expression at 48h and 72h, indicating the inhibition of BER pathway downstream to the AP removal by APE1. On the other hand, PCNA expression was higher for the combined treatment (24h and mainly 48h), suggesting its induction probably due to increased DNA damage. Therefore, the present results demonstrated that the association of TMZ with MX interfered with the expression of proteins involved in BER, thus, reducing the clonogenic efficiency of T98G cells, probably as a consequence of the high production of unrepaired DNA-MX adducts, leading to cell death, including apoptosis. These data show that the modulation of BER is a promising strategy for magnifying the therapeutic impact of TMZ, and in the next future, this strategy may embrace the option to establish novel and efficient therapy protocols for the treatment of gliomas with alkylating agents.
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Restovic, Valderrama Maria Inés. "Compilador ASN.1 e codificador/decodificador para BER." [s.n.], 1992. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259533.

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Orientador: Manuel de Jesus Mendes
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação
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Resumo: Neste trabalho apresenta-se uma ferramenta chamada Compilador ASN.1, cujo objetivo é fornecer uma representação concreta para a sintaxe abstrata ASN.1, de forma que, as especificações das PDU's dos protocolos de aplicação, geralmente escritas em ASN.1, possam ser utilizadas computacionalmente. Uma das funções prioritárias da camada de apresentação de um protocolo de comunicação é produzir uma codificação dos valores destas PDU's, baseando-se nas regras definidas pela norma BER. Assim, o compilador deve fornecer numa segunda tarefa, as rotinas de codificação e decodificação específicas para cada PDU compilada, utilizando um conjunto de funções que se encontram em duas bibliotecas auxiliares que realizam estas conversões
Abstract: This work presents a tool called "Compilador ASN.1", which main objective is to provide a concrete representation for the abstract syntax ASN.1, in order to translate the application protocol PDU's specification, written in ASN.1, to the C language. One of the main functions of the presentation layer is produce an encode-decode for the PDU's data values, based on the BER norm. Therefore, a second compiler task is to provide the specific encode-decode routines for each compiled PDU, using a function set available in two complementary libraries that carry out these conversions
Mestrado
Automação
Mestre em Engenharia Elétrica
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7

Selvarathinam, Anand Manivannan. "High throughput low power decoder architectures for low density parity check codes." Texas A&M University, 2005. http://hdl.handle.net/1969.1/2529.

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A high throughput scalable decoder architecture, a tiling approach to reduce the complexity of the scalable architecture, and two low power decoding schemes have been proposed in this research. The proposed scalable design is generated from a serial architecture by scaling the combinational logic; memory partitioning and constructing a novel H matrix to make parallelization possible. The scalable architecture achieves a high throughput for higher values of the parallelization factor M. The switch logic used to route the bit nodes to the appropriate checks is an important constituent of the scalable architecture and its complexity is high with higher M. The proposed tiling approach is applied to the scalable architecture to simplify the switch logic and reduce gate complexity. The tiling approach generates patterns that are used to construct the H matrix by repeating a fixed number of those generated patterns. The advantages of the proposed approach are two-fold. First, the information stored about the H matrix is reduced by onethird. Second, the switch logic of the scalable architecture is simplified. The H matrix information is also embedded in the switch and no external memory is needed to store the H matrix. Scalable architecture and tiling approach are proposed at the architectural level of the LDPC decoder. We propose two low power decoding schemes that take advantage of the distribution of errors in the received packets. Both schemes use a hard iteration after a fixed number of soft iterations. The dynamic scheme performs X soft iterations, then a parity checker cHT that computes the number of parity checks in error. Based on cHT value, the decoder decides on performing either soft iterations or a hard iteration. The advantage of the hard iteration is so significant that the second low power scheme performs a fixed number of iterations followed by a hard iteration. To compensate the bit error rate performance, the number of soft iterations in this case is higher than that of those performed before cHT in the first scheme.
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Pan, Yaobin. "Impact of DOA (direction of arrival) : in 4G MIMO Systems." Thesis, Linnéuniversitetet, Institutionen för fysik och elektroteknik (IFE), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-42158.

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Yaskoff, Nicholas Thomas. "ANALYSIS, SIMULATION, AND EXPERIMENTS FOR ADDITIVE NARROWBAND COMMUNICATION SYSTEMS." Ohio University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1180713870.

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Ramos, Sparrow Oswaldo. "Modélisation et conception d’un récepteur non cohérent ultra large bande pour les communications ULB radio impulsionnelle dans la bande 3-5 GHz." Thesis, Nice, 2014. http://www.theses.fr/2014NICE4091/document.

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Ce travail de recherche est basé sur la technologie Ultra Large Bande (ULB), en particulier pour des applications bas débit (standard IEEE 802.15.4) tels que les réseaux de capteurs, les transmissions WPAN ou encore WBAN. La modélisation et la conception d’un récepteur non cohérent ULB pour les communications radio impulsionnelles ont été réalisées. Un des facteurs les plus importants dans les communications ULB est la sensibilité du récepteur, qui détermine la portée de transmission maximale. Un autre facteur aussi important est la consommation d’énergie qui influence directement la durée de vie de la source d’alimentation (batterie). Dans ce contexte, nous présentons dans le chapitre I une introduction sur la technologie ULB et ses diverses applications. Le chapitre II présente la modélisation au niveau système ainsi que d’une étude comparative des récepteurs non cohérents basés sur la détection d’énergie et la pseudo-Détection d’énergie. Dans le chapitre III sont présentés la méthode de conception et de réalisation d’un récepteur non cohérent ULB dans la bande de 3-5 GHz, ainsi que les résultats de mesure et ses performances en termes de sensibilité et de consommation d’énergie. Finalement, le chapitre IV présente une étude théorique sur les différents modes de fonctionnement du transistor MOS afin de mieux comprendre le fonctionnement de chaque bloc du récepteur. Cela permet de proposer de nouvelles architectures pour la détection d’énergie. Enfin, à partir de ces études nous réalisons l’optimisation du récepteur en termes de sensibilité et de consommation d’énergie
This research is based on Ultra Wide Band (UWB) technology, in particularly for low-Rate applications such as sensor network, WPAN and WBAN (for the standard IEEE 802.15.4). The model and design of a non coherent receiver for UWB impulse radio communications has been completed. One of the most important factors in the UWB communications is the receiver sensitivity which determines the maximum transmission range. Another important factor is the energy consumption that determines the lifetime of the power source (battery). In this context, we present in Chapter I an introduction to UWB technology and its different applications. Chapter II deals with a modeling at the system level of non-Coherent receivers as well as a comparative study based on the energy detection and pseudo energy detection. In Chapter III is presented the method of design and implementation of a non-Coherent UWB receiver in the band of 3-5 GHz, as well as measurement results and performance in terms of sensitivity and power consumption. Finally, Chapter IV presents a theoretical study on the different modes of operation of the MOS transistor to understand the operation of each block of the receiver. This allows us to show the new architectures for energy detection and perform the optimization of receiver in terms of sensitivity and power consumption
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Books on the topic "BER"

1

Gloria, Miguel, and Mayo Lisa, eds. Reverb-ber-ber-rations. Alexandria, VA: Alexander Street Press, 2006.

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Reverb-ber-ber-rations. Alexandria, VA: Alexander Street Press, 2005.

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Pareek, O. P. Ber. Southampton, U.K: International Centre for Underutilised Crops, 2001.

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Siraji, Iskăndăr. Ber utyru -- ber gomer: Kyĭssa, băi︠a︡nnar, khikăi︠a︡lăr. Kazan: Tatarstan kitap năshrii︠a︡ty, 2009.

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Makhmaev, Zhamaldi. Aʹttan ber. Groznyĭ: [s.n.], 2008.

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Bal, J. S. Ber varieties. New Delhi: Associated Pub. Co., 1992.

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Federica Ber. Paris: Bernard Grasset, 2018.

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Nadezhda, Garipova, and Minḣajeva Asii͡a︡, eds. Ber kyl. Kazan: Tatarstan kitap năshrii͡a︡ty, 1994.

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Min︠g︡nullin, Tufan. Tatarnyn︠g︡ ber balasy. Kazan: Rukhii︠a︡t, 2003.

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Ram, Menuha. Ber Yodler: Roman. Tel-Aviv: Yiśroel-bukh, 1990.

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Book chapters on the topic "BER"

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Gooch, Jan W. "Ber." In Encyclopedic Dictionary of Polymers, 77. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_1244.

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Parthasarathy, S., P. Lakshmidevi, P. Yashodha, and C. Gopalakrishnan. "Ber." In Pests and Diseases in Fruit Crops, 60–69. London: CRC Press, 2024. http://dx.doi.org/10.1201/9781003504146-6.

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Arnemann, J. "Basenexcisionsreparatur (BER)." In Springer Reference Medizin, 405–6. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-48986-4_3443.

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Arnemann, J. "Basenexcisionsreparatur (BER)." In Lexikon der Medizinischen Laboratoriumsdiagnostik, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-49054-9_3443-1.

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Rutishauser, Christian. "Soloveitchik, Josef Ber." In Kindlers Literatur Lexikon (KLL), 1. Stuttgart: J.B. Metzler, 2020. http://dx.doi.org/10.1007/978-3-476-05728-0_20832-1.

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Mani, M. "Fruit Crops: Ber." In Mealybugs and their Management in Agricultural and Horticultural crops, 439–42. New Delhi: Springer India, 2016. http://dx.doi.org/10.1007/978-81-322-2677-2_48.

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Fan, Yongquan, and Zeljko Zilic. "BER Testing Under Noise." In Accelerating Test, Validation and Debug of High Speed Serial Interfaces, 149–78. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9398-1_6.

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Macy, Kelly, Wouter Staal, Cate Kraper, Amanda Steiner, Trina D. Spencer, Lydia Kruse, Marina Azimova, et al. "Brainstem Evoked Response (BER)." In Encyclopedia of Autism Spectrum Disorders, 475. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-1698-3_100227.

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Hiwale, Shrikant. "Ber (Zizyphus mauritiana Lamk.)." In Sustainable Horticulture in Semiarid Dry Lands, 23–41. New Delhi: Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2244-6_4.

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Narayana, C. K. "Ber (Zizypus. mauritiana Lam.)." In Phytochemicals in Fruits and their Therapeutic Properties, 55–60. London: CRC Press, 2021. http://dx.doi.org/10.1201/9781003245292-10.

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Conference papers on the topic "BER"

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Shinde, Suhas Vishwasrao, and Jan S. Knudsen. "BER test time optimization." In 2016 IEEE AUTOTESTCON. IEEE, 2016. http://dx.doi.org/10.1109/autest.2016.7589610.

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Mili, Mohammad Robat, and Khairi Ashour Hamdi. "Minimum BER analysis and the effect of extra channel side information on BER." In 2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC 2012). IEEE, 2012. http://dx.doi.org/10.1109/pimrc.2012.6362799.

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Wang, X. F., W. S. Lu, and A. Antoniou. "Constrained minimum-BER multiuser detection." In 1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99 (Cat. No.99CH36258). IEEE, 1999. http://dx.doi.org/10.1109/icassp.1999.760664.

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Lipovac, Adriana, and Ante Mihaljevic. "BER Based OFDM PAPR Estimation." In 2018 26th International Conference on Software, Telecommunications and Computer Networks (SoftCOM). IEEE, 2018. http://dx.doi.org/10.23919/softcom.2018.8555780.

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Mili, Mohammad Robat, and Khairi Ashour Hamdi. "Minimum BER analysis in cognitive radio." In GLOBECOM 2012 - 2012 IEEE Global Communications Conference. IEEE, 2012. http://dx.doi.org/10.1109/glocom.2012.6503296.

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Louchet, Hadrien, Konstantin Kuzmin, Igor Koltchanov, and André Richter. "BER Estimation for Multilevel Modulation Formats." In Asia Communications and Photonics Conference and Exhibition. Washington, D.C.: OSA, 2009. http://dx.doi.org/10.1364/acp.2009.tht1.

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Veljovic, Zoran, Ugljesa Urosevic, and Milica Pejanovic-Djurisic. "Improving BER performance of virtual QOSTBC." In 2014 International Symposium on Wireless Personal Multimedia Communications (WPMC). IEEE, 2014. http://dx.doi.org/10.1109/wpmc.2014.7014900.

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Kyongkuk Cho, Dongweon Yoon, Wuncheol Jeong, and M. Kavehrad. "BER analysis of arbitrary rectangular QAM." In Conference Record. Thirty-Fifth Asilomar Conference on Signals, Systems and Computers. IEEE, 2001. http://dx.doi.org/10.1109/acssc.2001.987656.

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Bonnoit, Thierry, Dominique Morche, Cedric Dehos, and Emeric de Foucauld. "Robust BER estimator for DBPSK modulation." In 2014 IEEE 12th International New Circuits and Systems Conference (NEWCAS). IEEE, 2014. http://dx.doi.org/10.1109/newcas.2014.6934006.

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Luo, Lin, Jian Zhang, and Zhenning Shi. "BER Analysis for Asymmetric OFDM Systems." In IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference. IEEE, 2008. http://dx.doi.org/10.1109/glocom.2008.ecp.874.

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Reports on the topic "BER"

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Dunbar, John Martin. BER Q4 Report. Office of Scientific and Technical Information (OSTI), October 2019. http://dx.doi.org/10.2172/1569708.

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Alapaty, Kiran, Ben Allen, Greg Bell, David Benton, Tom Brettin, Shane Canon, Eli Dart, et al. BER Science Network Requirements. Office of Scientific and Technical Information (OSTI), November 2010. http://dx.doi.org/10.2172/1000971.

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Shmorhun, Mark. BER-Myriant Succinic Acid Biorefinery. Office of Scientific and Technical Information (OSTI), December 2015. http://dx.doi.org/10.2172/1333678.

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Krosky, Daniel J., and James T. Stivers. Rational Inhibitors of DNA Base Excision (BER) Enzymes: New Tools for Elucidating the Role of BER in Cancer Chemotherapy. Fort Belvoir, VA: Defense Technical Information Center, May 2004. http://dx.doi.org/10.21236/ada424155.

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Scheibe, Timothy D., and Jeremy C. Smith. Multiscale Computation: Needs and Opportunities for BER Science. Office of Scientific and Technical Information (OSTI), August 2014. http://dx.doi.org/10.2172/1178862.

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Tierney, Brian L., and Eli Dart. BER Science Network Requirements Workshop -- July 26-27,2007. Office of Scientific and Technical Information (OSTI), February 2008. http://dx.doi.org/10.2172/924773.

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Krosky, Daniel J. Rational Inhibitors of DNA Base Excision Repair (BER) Enzymes: New Tools for Elucidating the Role of the BER in Cancer Chemotherapy. Fort Belvoir, VA: Defense Technical Information Center, May 2005. http://dx.doi.org/10.21236/ada437740.

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Maggio, Gian M., David Laney, and Lawrence Larson. BER and Error-Floor Calculation for Multi-Access PCTH. Fort Belvoir, VA: Defense Technical Information Center, January 2002. http://dx.doi.org/10.21236/ada414339.

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Sotoudeh, Mahshid, ed. Mobilit�t �ber Preise steuern (ITA-Dossier Nr. 41, November 2018). Vienna: self, 2018. http://dx.doi.org/10.1553/ita-doss-041.

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Schröder, J. J., L. B. Šebek, J. Oenema, J. G. Conijn, and J. de Boer. Rekenregels van de KringloopWijzer 2016 : achtergronden van BEX, BEA, BEN, BEP en BEC: actualisatie van de 2015-versie. Wageningen: Wageningen Plant Research, 2017. http://dx.doi.org/10.18174/419319.

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