International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, California / It is widely recognized that telemetry channels, particularly airborne channels, are afflicted by multipath propagation effects. It has also been shown that adaptive equalization can be highly effective in mitigating these effects. However, numerous other factors influence the behavior of adaptive equalization, and the type of modulation employed is certainly one of these factors. This is particularly true on modulations which exhibit different operating bandwidths. In this paper, we will examine the effect multipath and adaptive equalization for three modulation techniques which are either already in use, or have been proposed, for airborne telemetry.

ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada / Transmitter mobility and multipath propagation make the telemetry channel both time and frequency selective, which results in telemetry link errors, sometimes in crucial flight phases. Only part of these impairments are compensated by various diversity techniques, but a fast converging adaptive channel equalization is probably the best suited and most cost effective solution. This paper first presents an analysis of mobile multipath propagation in telemetry based on recorded operational signals, both at the transmitter and at the receiver sides. Then it provides performance evaluation of a novel blind equalizer, assessed by offline processing of the recorded signals. The paper focuses on typical environments at a flight test centre, which exhibit critical multipath channel characteristics, namely during parking, taxiway and flight. The channel analysis exploits the recorded signals as well as the time frequency response of the novel equalizer filter. Performance evaluation shows that the equalizer outperforms state of the art Constant Modulus Algorithm (CMA). In particular, it is shown to significantly increase the telemetry link availability even in severe conditions, sometimes from nearly 0% to almost 100%, whereas the CMA fails to improve the signal quality as soon as the channel varies in time.

ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada / Many engineers have tried to detect and correct erroneous data in telemetry communications. The best source selector can be used to combine data from two or more bit synchronizers to reduce frame error rates. An error-correcting code can be used as well. These techniques are absolutely helpful to obtain reliable telemetry data. However, some errors still remain and must be removed. This paper introduces the way to effectively merge multiple PCM files that are saved in different receiving sites, and shows nearly errorless data resulting from merging flight test data using a PC-based frame optimizer, which is a developed program.

La conductivité électronique de l'éméraldine sel dépend des conditions de sa synthèse (solvant et dopant utilisés) et de son traitement après synthèse. L'objectif principal de cette thèse est de démontrer et d'interpréter les corrélations entre l'environnement et les propriétés de la forme conductrice de la polyaniline. Dans la partie théorique, nous avons examiné l'influence des différents dopants et solvants sur la structure et les propriétés de la polyaniline. Pour atteindre cet objectif, un large dispositif de méthodes de chimie quantique a été testé et une méthode appropriée a été choisie. Dans la partie expérimentale nous avons utilisé une nouvelle approche pour accéder aux propriétés intrinsèques de la polyaniline i.e. sans utiliser ni solvants ni dopants autres que ceux utilisés lors de la synthèse. Les calculs montrent que la description théorique de la polyaniline dépend fortement du choix de la méthode. La modélisation de l'effet de la polarité du solvant grâce à l'utilisation de la méthode PMC semble être cruciale pour une description fiable de l'interaction polyaniline-dopant. Les résultats obtenus démontrent pour la première fois que les interactions, de la polyaniline avec les dopants dépendent de la nature chimique du solvant et pas du dopant lui-même. De plus, nous avons montré que la stabilité de la forme polaronique (conductrice) augmente avec l'augmentation de la polarité du solvant. Ces conclusions correspondent parfaitement à nos résultats expérimentaux qui montrent le rôle crucial du solvant (et pas des dopants) sur les propriétés de la polyaniline.

本文透過一開放經濟體系寡占模型的建立與推導，於1989年至1997年的期間，針對台灣中游石化產業的18種產品，探討匯率波動與市場結構對產業獲利率所產生之影響。由於實證資料屬panel data，於實證分析時，變異數容易產生異質性變異(heteroskedasticity)的問題，所以本文先對實證模型進行Hausman Test，結果顯示該實證模型適合使用隨機效果模型進行實證估計。根據實證結果發現，原料進口加權匯率對本國廠商內銷獲利率的影響為負向；出口比對本國廠商內銷獲利率的影響為正向；原料進口加權匯率與國內產業集中度的乘積對本國廠商內銷獲利率的影響為正向；原料進口加權匯率與出口比的乘積對本國廠商內銷獲利率的影響同樣為正向。分析上述結果，在國內廠商生產過程中，使用國外進口生產原料超過某一特定比例的假設之下，當本國貨幣貶值時，國內廠商因進口原料成本增加，將導致其內銷獲利率減少，且內銷獲利率減少幅度與市場競爭程度成正比，與出口比成反比。

International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada / Flight Termination is a control action that takes place when missiles or targets violate estabished safety criteria. The flight termination receiver, part of a ground to air control loop, is characterised by high system integrity and dedication to recovering and decoding the command signals. The paper describes the factors that have influenced the design and build of a robust Pulse Code Modulation Flight Termination Receiver for use on UK Trial Ranges. This work has been carried out with the support of UK MoD(PE), A ARM 51, on contract number A ARM 13b/224.

International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada / In this paper, a new concept in PCM telemetry encoding equipment is described. Existing "programmable" PCM encoders allow only simple changes in the functionality of the hardware, such as input gain, offset, and word formatting. More importantly, these encoders do not provide capability for "in-flight" processing of signals and in general have not taken advantage of existing hardware and software digital signal processing technology. In-flight processing of signals can provide a significant reduction in the required transmission bandwidth, allowing additional data that may not have otherwise been transmitted to be sent on the telemetry channel. A modular digital signal processor (DSP) based PCM encoder architecture is described that has a set of on-board processing algorithms configurable via a simple-to-use graphical user interface. Algorithms included are compression (lossy and lossless), Fourier transforms of various resolutions (typically followed by peak detection to provide a data rate reduction), extreme values (max, min, rms), time filtering, regression, trajectory prediction, and serial data stream processing. Custom algorithms can be developed and included as part of the suite of processing algorithms. The preprocessing algorithms exist as firmware on the DSPs and can accommodate as many different signals as the processing bandwidth of the DSP can handle. Typically one DSP can handle many input signals and different algorithms. The encoder is programmable via a standard RS-232 serial interface allowing the signal input configuration, telemetry frame layout, and on-board processing algorithms to be changed quickly.

International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, California / It is known that a PCM telemetry system features with good accuracy, great dynamic range, and low noise. And when more than fourteen data channels are required, the PCM is generally the best choice. The paper describes the general ideas involved in developing a PCM telemetry system with fibre transmission.

La méiose chez les femelles est un processus de réduction du génome permettant la formation d'un gamète haploïde, l'ovocyte. Dans la plupart des espèces animales, l'ovogénèse est associée à une élimination des centrioles, composants des centrosomes, qui sont les centres organisateurs des microtubules (MTOCs) canoniques. En l'absence de centrioles, le fuseau méiotique est assemblé grâce à la large contribution des MTOCs. Cependant, leur origine, l'importance de leur organisation et de la régulation de leur activité sont peu comprises. J'ai démontré que les MTOCs sont déjà présents dans les ovocytes précurseurs et sont progressivement rassemblés sur l'enveloppe nucléaire chez les ovocytes compétents pour les divisions méiotique. A l'entrée en méiose, les MTOCs sont distribués autour des chromosomes qui se condensent de façon strictement régulée au cours du temps. La perturbation de l'organisation des MTOCs par une surexpression de la kinase Polo-like 4 (Plk4) altère l'activité de nucléation des microtubules à l'entrée en méiose. L'activité anormale de ces MTOCs conduit à la formation de fuseaux non fonctionnels et à l'arrêt méiotique. / Female meiosis is a fundamental process of genome reduction leading to formation of a haploid gamete, the oocyte. In most animal species, oogenesis is associated with elimination of centrioles, constituents of centrosomes, which are canonical Microtubule Organizing Centers (MTOCs). In the absence of centrioles, meiotic spindle is assembled with a large contribution of acentriolar MTOCs. However, their origins, importance of organization and regulation of activity are poorly understood. I have shown that MTOCs pre-exist in the oocyte precursors and that they are progressively gathered on the nuclear envelope as oocytes gain competency for meiotic divisions. At entry into meiosis, MTOCs are redistributed around the condensing chromosomes in a strictly regulated timely fashion. Perturbation of such MTOC organization by transgenic overexpression of Polo-like kinase 4 (Plk4) leads to altered MT-nucleating activity at meiotic entry. Such abnormally active MTOCs mediate the formation of large and non-functional spindles and meiotic arrest.

Submitted by PPG Economia do desenvolvimento (economia-pg@pucrs.br) on 2018-07-25T18:47:09Z No. of bitstreams: 1 ERIC_LOSALA_BOSIO.pdf: 1831052 bytes, checksum: 8d9dff4d3fe890729aac32fd9123355d (MD5) / Approved for entry into archive by Sheila Dias (sheila.dias@pucrs.br) on 2018-07-31T13:00:36Z (GMT) No. of bitstreams: 1 ERIC_LOSALA_BOSIO.pdf: 1831052 bytes, checksum: 8d9dff4d3fe890729aac32fd9123355d (MD5) / Made available in DSpace on 2018-07-31T13:12:07Z (GMT). No. of bitstreams: 1 ERIC_LOSALA_BOSIO.pdf: 1831052 bytes, checksum: 8d9dff4d3fe890729aac32fd9123355d (MD5) Previous issue date: 2018-03-28 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The present study aims to evaluate the possible impacts of eliminating tariff barriers on the fertilizer market. To evaluate the effects of free trade is used a spatial model formulated as Mixed Complementary Problem (MCP). To achieve the proposed objective, five scenarios are simulated: the first considers the elimination of tariff barriers in a multilateral arrangement; the second simulates the expansion of the Transatlantic Trade and Investment Partnership Agreement (TTIP), including Brazil in the agreement; the third simulates the inclusion of Brazil in the Trans-Pacific Association Agreement (TTP); the fourth simulates the formation of a bilateral agreement that eliminates trade barriers between Brazil and Russia; and the fifth simulates an agreement between Brazil and the region of Africa. The biggest gains are in the scenario where the elimination of all tariff barriers in a multilateral trade agreement is considered, which means that for the fertilizer market the elimination of tariff barriers in a multilateral trading arrangement is the best option for production for all producers than regional arrangements. / O presente estudo tem por objetivo avaliar os poss?veis impactos da elimina??o das barreiras tarif?rias sobre o mercado dos fertilizantes. A fim de avaliar os efeitos da liberaliza??o dos mercados, ? utilizado o modelo de equil?brio espacial formulado como um Problema de Complementaridade Mista (PCM). Para atingir o objetivo proposto s?o simulados cinco cen?rios: o primeiro considera a elimina??o das barreiras tarif?rias em um arranjo multilateral; o segundo simula a expans?o do Acordo de Parceria Transatl?ntico de Com?rcio e Investimento (TTIP), incluindo-se o Brasil no acordo; o terceiro simula a inclus?o do Brasil no Acordo de Associa??o Transpac?fico (TTP); o quarto simula a forma??o de um acordo bilateral que elimina as barreiras comerciais entre o Brasil e a R?ssia; e o quinto simula um acordo entre o Brasil e a regi?o da ?frica. Os maiores ganhos ocorrem no cen?rio em que se considera a elimina??o de todas as barreiras tarif?rias em um acordo comercial multilateral, o que permite dizer que, para o mercado de fertilizantes, a elimina??o das barreiras tarif?rias em um arranjo comercial multilateral ? a melhor op??o para impulsionar a produ??o para todos os produtores do que os arranjos regionais.