«Le chef gagne tous les jours de nouveaux sujets» : pouvoir, leadership et organisation sociale chez les Algonquins des lacs Abitibi et Témiscamingue au 19e siècle.

Cette thèse cherche à documenter le changement culturel vécu par les Algonquins des lacs Abitibi et Témiscamingue au 19e siècle, à partir d'une démarche ethnohistorique. Le changement culturel autochtone est souvent perçu comme ayant été défavorable et produit sous l'effet de la contrainte. Cette thèse montre que le contexte changeant du 19e siècle a offert des opportunités permettant aux Algonquins d'apporter des solutions nouvelles à d'anciens problèmes pour lesquels il n'existait pas de solution autrefois. Bien que cette période corresponde à l'amorce de la dépossession territoriale des Algonquins, on n'y observe pas, à cette période, de stress environnemental ayant pu induire ces changements. Cette étude se fait sous le concept unificateur du pouvoir. Le pouvoir dans la conception algonquine est une qualité intrinsèque, qui peut fluctuer au cours d'une vie. Il est manifeste par l'habileté d'une personne à faire fléchir le sort en sa faveur et à déjouer l'infortune. Il est également transmissible à l'intérieur de certaines familles. Au début du 19e siècle, certaines personnes étaient réputées détenir beaucoup de pouvoir et leur leadership ne pouvait être remis en question. Ainsi, il existait des chefs héréditaires et des chamanes puissants et parfois craints. J'avance qu'après l'introduction du catholicisme, les Algonquins ont utilisé cette religion pour se prémunir contre un pouvoir perçu comme démesuré. Ils ont également pris l'initiative de mettre en œuvre le mode de scrutin prévu à la Loi sur les Indiens afin de désigner des chefs choisis pour leur compétence et éloigner des personnes craintes ou incompétentes. Ils ont également mis en place des mesures de protection, évitant de concentrer trop de pouvoir entre les mains d'un chef élu. Le siècle a vu émerger une place plus grande pour la bande comme entité sociale algonquine. En effet, les rassemblements estivaux au niveau de la bande se sont amorcés à cette période, d'abord en conséquence de la participation aux brigades de transport des marchandises, puis à la tenue estivale des missions catholiques. À la fin du siècle, les chefs se sont vus attribuer un pouvoir de représentation politique très grand et ont joué un rôle social grandissant au niveau de la bande.

Perspectives de l'usage de poudre de jaunes d’oeuf comme additif alimentaire contre Campylobacter jejuni chez le poulet : mode d'immunisation et effet de l’encapsulation

La campylobactériose est une zoonose causée par Campylobacter jejuni, une bactérie commensale du poulet, considérée comme la principale source de contamination humaine. C. jejuni est rarement retrouvé dans le tube digestif des poulets avant deux ou trois semaines d'âge. Ce qui pourrait s'expliquer par la transmission d'une immunité maternelle (anticorps IgY) transmise aux poussins via le jaune d'œuf. À la Chaire de recherche en Salubrité des Viandes (CRSV), la caractérisation d'anticorps IgY extraits de jaunes d'œufs frais a montré des niveaux de production d’anticorps différents selon le mode d’immunisation et suggère, in vitro, des effets sur ce pathogène. Ce qui laisse penser qu'en tant qu'additif alimentaire, une poudre de jaunes d'œuf potentialisée permettrait de lutter contre C. jejuni chez le poulet à griller. Dans ce travail, le processus de fabrication de l'additif (déshydratation par « Spray dry » puis encapsulation) a été évalué et les différents modes d'immunisation des poules pondeuses ont également été comparés. Les anticorps ont été extraits des différentes poudres de jaunes d'œuf ou du produit final encapsulé, et caractérisés in vitro (dosage / ELISA, test de mobilité, bactéricidie, western blot). Puis, une évaluation in vivo de la capacité de ces poudres encapsulées, incorporée à 5 % dans la moulée, afin de réduire ou de bloquer la colonisation intestinale des oiseaux par C. jejuni a été testée. In vitro, les résultats ont montré des concentrations d'anticorps et d'efficacité variables selon le type de vaccination. Dans cette étude, on a observé que le « Spray dry » a concentré les anticorps dans les poudres et que ces anticorps sont restés fonctionnels contre C. jejuni. On a également observé que l'encapsulation n’entraîne pas une perte quantitative des anticorps contenus dans les poudres. Malgré les résultats in vitro encourageants, les résultats in vivo ne révèlent aucune inhibition ou réduction de la colonisation des oiseaux par C. jejuni. L’absence d’efficacité la poudre de jaunes d’œuf encapsulée dans notre étude n’est pas due à une perte quantitative et/ou qualitative des anticorps comme soutenu dans les expériences in vitro. Ce qui démontre que les recherches doivent être poursuivies afin de déterminer les conditions optimales de l'utilisation de la poudre de jaune d'œuf in vivo, en tant qu'additif alimentaire chez les poulets

Modern Judicial Reform in El Salvador and Brazil

A comparative assessment of the successes and failures of the judicial reform efforts of El Salvador and Brazil in the 1980’s produces striking results. The reforms varied greatly in scope and were conducted in very different socio-political and economic backgrounds. While El Salvador’s reforms seemed narrow and ill-planned, on paper it appeared that Brazil’s broad reforms would be a successful model for any country with a fledgling democracy. Brazil’s reforms were an exercise in constitutionalism, implementing genuine separation of powers and receiving legislative and executive support. I was very surprised that these different approaches produced strikingly similar negative effects on the people’s assessment of the judiciary. From this outcome I concluded that while judicial reform of a corrupt or inefficient judiciary is an important step in ensuring the rule of law in society, it can not be the vehicle through which democratic reform is implemented. Quite to the contrary, for successful judicial reform to take place there must be considerable penetration of the law in society through enforcement of unbiased legislation, consistency in the laws and their enforcement, and sufficient time for the reform to have an effect on society.

Investigation of Offences against National Security

The study is a close scrutiny of the process of investigation of offences in India along with an analysis of powers and functions of the investigating agency. The offences, which are prejudicial to sovereignty, integrity and security of the nation or to its friendly relations with foreign states, are generally called the offences against national security. Offences against national security being prejudicial to the very existence of the nation and its legal system, is a heinous and terrible one. As early as 1971 the Law Commission of India had pointed out the need of treating the offences relating to national security and their perpetrators on a totally different procedural footing. The recommendation that, all the offences coming under the said category ought to be brought under the purview of a single enactment so as to confront such offences effectively. The discrepancies in and inadequacies of the criminal justice system in India as much as they are related to the investigations of the offences against national security are examined and the reforms are also suggested. The quality of criminal justice is closely linked with the caliber of the prosecution system and many of the acquittals in courts can be ascribed not only to poor investigations but also to poor quality of prosecution.

Pulsed photoacoustic technique to study nonlinear processes in liquids: Results in toluene

Pulsed photoacoustic measurements have been carried out in toluene at 532 nm wavelength using a Q-switched frequency doubled Nd:YAG laser. The variation of photoacoustic signal amplitude with incident laser power indicates that at lower laser powers one photon absorption takes place at this wavelength while a clear two photon absorption occurs in this liquid at higher laser powers. The studies made here demonstrate that pulsed photoacoustic technique is simple and effective for the investigation of multiphoton processes in liquids.

Photoacoustic detection of two photon absorption in formaldehyde using pulsed dye laser

Absorption spectra of formaldehyde molecule in the gas phase have been recorded using photoacoustic (PA) technique with pulsed dye laser at various power levels. The spectral profiles at higher power levels are found to be different from that obtained at lower laser powers. Two photon absorption (TPA) is found to be responsible for the photoacoustic signal at higher laser power while the absorption at lower laser power level is attributed to one photon absorption (OPA) process. Probable assignments for the different transitions are given in this paper.

Development of a New Transform:MRT

Fourier transform methods are employed heavily in digital signal processing. Discrete Fourier Transform (DFT) is among the most commonly used digital signal transforms. The exponential kernel of the DFT has the properties of symmetry and periodicity. Fast Fourier Transform (FFT) methods for fast DFT computation exploit these kernel properties in different ways. In this thesis, an approach of grouping data on the basis of the corresponding phase of the exponential kernel of the DFT is exploited to introduce a new digital signal transform, named the M-dimensional Real Transform (MRT), for l-D and 2-D signals. The new transform is developed using number theoretic principles as regards its specific features. A few properties of the transform are explored, and an inverse transform presented. A fundamental assumption is that the size of the input signal be even. The transform computation involves only real additions. The MRT is an integer-to-integer transform. There are two kinds of redundancy, complete redundancy & derived redundancy, in MRT. Redundancy is analyzed and removed to arrive at a more compact version called the Unique MRT (UMRT). l-D UMRT is a non-expansive transform for all signal sizes, while the 2-D UMRT is non-expansive for signal sizes that are powers of 2. The 2-D UMRT is applied in image processing applications like image compression and orientation analysis. The MRT & UMRT, being general transforms, will find potential applications in various fields of signal and image processing.

Two-dimensional clusters of liquid 4He

The binding energies of two-dimensional clusters (puddles) of¿4He are calculated in the framework of the diffusion Monte Carlo method. The results are well fitted by a mass formula in powers of x=N-1/2, where N is the number of particles. The analysis of the mass formula allows for the extraction of the line tension, which turns out to be 0.121 K/Å. Sizes and density profiles of the puddles are also reported.

Child labour in India

This thesis entitled “Child labour in india”Children are "supremely important assets" of the nation, India proudly asserts in the National Policy for Children (1974) gracefully acknowledging that they are future citizens on whose shoulders the destiny of our nation rests.Childhood is a time of discovery as the world and all it contains are new to children. It is a time of excitement and anticipation. lt is a time of dreams and fantasies. And it is a time of receiving love and appreciation. Paradoxically, a picture of contrast is a common experience in India as a vast majority of children who are starved of basic needs of nutrition, health and education are made to work at an early age in exploitative conditions. The specter of child labour is a glaring anomaly in a country graciously adorning human right. In an exposition of the problem involving human rights abuse, Chapters from Two to Five of this study have shot into focus the human rights jurisprudence with special reference to the rights of children. Children have a particular identity as children and they also have a universal identity as human beings.The concern for mankind expressed unequivocally and transcending the globe will be real and moving and not mere rhetoric and ritual if and only when it begins with children, as, to quote the words of Nehru, the human being counts much more as a child than as a grown up.The first three of these rights namely right to health, right to nutritive food and right to education are dealt with in Chapter Four. Finally, the positive effects of education have been sketched in that chapter to impress upon its significance in the development of human capitals.legitimization. The theme of legitimacy was rationalised on the ground of poverty as a strategy for achieving eradication of child labour ultimately by enforcing minimum wages, shorter working hours, leave compensation, non-formal education etc., as the employer would soon discover that child labour is not cheap and would be obliged to substitute adult labour. However, humanising the work life is only a promise to the detriment of children as the Act of 1986 enacted as a part of the new strategy is nearingcompletion of a decade of existence but nowhere near the fulfilment of the mission.As similar urge is more necessary and overdue, it has been suggested that a special body be established with all powers for cognisance of human rights abuse of children.It is proposed to conclude this study with a brief summary of the inferences drawn from the foregoing chapters along with a few suggestions emerging out of those inferences

Role of academic bodies with special references to the academic programmes in the universities in Kerala

This makes a thorough study of Role of Academic Bodies with Special Reference to the Academic Programmes in the Universities in Kerala. The present study has dealt with the constitution, powers and functions of the authorities of the universities in Kerala, especially the academic bodies which have well-defined powers and function. This thesis gives in detail the role and functions of the academic bodies in the four universities in Kerala, under study: and examines the role-effectiveness of these bodies. To sum up, it can be concluded that the academic bodies in the universities in Kerala do not function as effectively as envisaged in the laws of the universities. They have a maintenance-oriented approach rather than a dynamic one, without thinking in terms of introducing innovations. They need improvement in the various aspects of their constitution, selection of members and their mode of functioning

Cinematographic Licensing

In India, film censorship originated with Cinematograph Act 1918 empowering the Provincial Governments to establish censorial authorities. In 1949, an amendment provided for a Central Board of Film Censors. In 1952, a new legislation gave the Central Government enormous powers, making the Board to function as a department of the Central Government. The Government had control over the Board with the mechanism of issuing 'directions' to the censors and laying down censorship rules. The legislation did not provide any objective criteria for censoring films. The 1959 amendment, aimed at curing this defect, only incorporated the grounds contained in Article 19(2) of the Constitution. Even after expert studies and a significant decision by the Supreme Court, pointing out the inadequacy of the existing system, and governmental attempts to bring reforms by way of fresh directions, appointment of appellate authority and framing of new rules, the system still warrants radical change. The thesis explores them.

" Studies on Laser induced Phatothermal Phenomena in Selected Organic Compounds and Fullerenes"

In the pre—laser era it was difficult to believe that the optical properties of a medium depend upon the intensity of the radiation incident on it. The basis for this conclusion is that the electric field strength associated with the conventional light sources used before the advent of lasers was much smaller than (103 V/cm) the field sttrengths of atomic or interatomic fields (2 107 —- 10” V/cm). The radiation with such low intensity is not able to affect atomic fields to the extent of changing optical parameters. The invention of laser in 1960 was a turning point. The high degree of coherence of the laser radiation provides high spatial concentration of optical power. With the availability of the femtosecond lasers it has become possible to get extremely high peak powers 2 1013 W/cmz). At such high fields, the relationship between electric ‘polarization P and the electric field strength E ceases to be linear and several nonlinear effects begin to occur. Nonlinear absorption, a branch of nonlinear optics, refers to the interaction between radiation and matter accompanied by absorption of more than one photon. Nonlinear absorption has acquired great importance after the invention of high power lasers. One of the objectives of the present work is to investigate the nonlinear absorption processes occurring in fullerene, selected organic solvents and laser dyes. Fullerenes and laser dyes were chosen because of their highly nonlinear behaviour. Fullerenes, the most beautiful among molecules, offer fascinating field of research owinglto their significant structural properties. As toluene, benzene and carbon disulphide are themost widely used solvents for fullerenes, it seems important to study the nonlinear properties of these liquids as well. Like fullerenes, laser dyes also possess highly delocalized 7r electrons which are responsible for their nonlinear absorption. Dye lasers were the fulfillment of an experimenter’s pipe dream - to have a laser that is easily tunable over a wide range of wavelengths. A better understandingof the photophysical properties of laser dyes can significantly enhance the development and technology of dye lasers. We studied the nonlinear absorption properties of two rhodamine dyes to have some insight into their nonlinear optical properties.

Gestaltpädagogische Elemente in der Berufspädagogik. Potentielle Erträge gestaltpädagogischer Ansätze für die berufliche Bildung. Konzepte, Fundierung, Realisierungsformen.

Gestaltpädagogische Elemente in der Berufspädagogik Potentielle Erträge gestaltpädagogischer Ansätze für die berufliche Bildung - Konzepte, Fundierung, Realisierungsformen - Zusammenfassung: Berufsausbilder, Berufsschullehrer und Trainer in der Aus- und Weiterbildung werden heute mit vielfältigen Veränderungen konfrontiert. Aufgrund des Technikeinsatzes zeigt sich in vie-len Unternehmen ein Wandel der beruflich organisierten Arbeit. Die wirtschaftlichen, techni-schen und sozialen Systemzusammenhänge werden zunehmend komplexer, dynamischer, enger vernetzt und normativ unbestimmter. Die technologische Entwicklung, vor allem der Kommunikationsmedien, hat eine Temposteigerung der Informationsübermittlung zur Folge, die gleichzeitig das Wissen erhöht. Mit der Forderung nach Schlüsselqualifikationen und der Wiederentdeckung ganzheitlicher Arbeitssituationen ist das Bestreben nach Bildungskonzep-ten verbunden, die mit der Herausbildung von Kompetenzen, wie vernetztes, system- und handlungsbezogenes Denken in komplexen Kontexten, Abstraktionsvermögen, systemati-sches Verständnis von Organisationsinterdependenzen, Selbstständigkeit, Selbstverantwor-tung, soziale, methodische und kommunikative Kompetenz und Innovationskraft korrespon-dieren. Unter dem Blickwinkel der Gestaltpädagogik fällt auf, dass die Berufspädagogik Methoden und Techniken in der betrieblichen Aus- und Weiterbildung nutzt, die wesentliche Elemente der Gestaltpädagogik enthalten. Eine konkrete theoretische Fundierung und Einbettung in die Berufspädagogik fehlt jedoch bisher. Die primäre Zielsetzung der Arbeit ist, die theoretischen Grundlagen der Gestaltpädagogik herauszuarbeiten und sie mit der Berufspädagogik in Verbindung zu bringen. An Beispielen wird aufgezeigt, wie gestaltpädagogische Aspekte in die betriebliche Aus- und Weiterbildung einfließen. Dabei werden unter anderem auch die Grenzen und Potentiale der Gestaltpädago-gik für die Berufspädagogik betrachtet. Die theoretische und praktische Relevanz der Arbeit ergibt sich daraus, dass erstmals berufs-pädagogische Vorgehensweisen der Praxis im Hinblick auf gestaltpädagogische Aspekte un-tersucht wurden. Die wesentlichen Forschungsergebnisse dieser Arbeit lassen sich wie folgt zusammenfassen: In der betrieblichen Aus- und Weiterbildung kommen Methoden und Vorgehensweisen zum Einsatz, die oberflächlich betrachtet gestaltpädagogischen Charakter haben. Jedoch werden die gestaltpädagogischen Grundgedanken, wie z.B. eine ganzheitlich umfassende Persönlich-keitsentwicklung, persönlich bedeutsames Lernen, Förderung der sozialen Interaktionsfähig-keit oder die Förderung der Autonomie in der betrieblichen Bildungsarbeit auf ein Minimum reduziert. Die gestaltpädagogischen Methoden und Vorgehensweisen werden überwiegend auf ökonomische Zwecke hin ausgerichtet und funktionalisiert eingesetzt. Man kann sagen, dass sich die betriebliche Praxis mit der Aneinanderreihung von kreativen Übungen zufrieden gibt, und eine Tendenz zu erlebnisaktivierenden Vorgehensweisen zu erkennen ist.

High-Speed Semiconductor Lasers based on Low-Dimensional Active Materials for Optical Telecommunication

The scope of this work is the fundamental growth, tailoring and characterization of self-organized indium arsenide quantum dots (QDs) and their exploitation as active region for diode lasers emitting in the 1.55 µm range. This wavelength regime is especially interesting for long-haul telecommunications as optical fibers made from silica glass have the lowest optical absorption. Molecular Beam Epitaxy is utilized as fabrication technique for the quantum dots and laser structures. The results presented in this thesis depict the first experimental work for which this reactor was used at the University of Kassel. Most research in the field of self-organized quantum dots has been conducted in the InAs/GaAs material system. It can be seen as the model system of self-organized quantum dots, but is not suitable for the targeted emission wavelength. Light emission from this system at 1.55 µm is hard to accomplish. To stay as close as possible to existing processing technology, the In(AlGa)As/InP (100) material system is deployed. Depending on the epitaxial growth technique and growth parameters this system has the drawback of producing a wide range of nano species besides quantum dots. Best known are the elongated quantum dashes (QDash). Such structures are preferentially formed, if InAs is deposited on InP. This is related to the low lattice-mismatch of 3.2 %, which is less than half of the value in the InAs/GaAs system. The task of creating round-shaped and uniform QDs is rendered more complex considering exchange effects of arsenic and phosphorus as well as anisotropic effects on the surface that do not need to be dealt with in the InAs/GaAs case. While QDash structures haven been studied fundamentally as well as in laser structures, they do not represent the theoretical ideal case of a zero-dimensional material. Creating round-shaped quantum dots on the InP(100) substrate remains a challenging task. Details of the self-organization process are still unknown and the formation of the QDs is not fully understood yet. In the course of the experimental work a novel growth concept was discovered and analyzed that eases the fabrication of QDs. It is based on different crystal growth and ad-atom diffusion processes under supply of different modifications of the arsenic atmosphere in the MBE reactor. The reactor is equipped with special valved cracking effusion cells for arsenic and phosphorus. It represents an all-solid source configuration that does not rely on toxic gas supply. The cracking effusion cell are able to create different species of arsenic and phosphorus. This constitutes the basis of the growth concept. With this method round-shaped QD ensembles with superior optical properties and record-low photoluminescence linewidth were achieved. By systematically varying the growth parameters and working out a detailed analysis of the experimental data a range of parameter values, for which the formation of QDs is favored, was found. A qualitative explanation of the formation characteristics based on the surface migration of In ad-atoms is developed. Such tailored QDs are finally implemented as active region in a self-designed diode laser structure. A basic characterization of the static and temperature-dependent properties was carried out. The QD lasers exceed a reference quantum well laser in terms of inversion conditions and temperature-dependent characteristics. Pulsed output powers of several hundred milli watt were measured at room temperature. In particular, the lasers feature a high modal gain that even allowed cw-emission at room temperature of a processed ridge wave guide device as short as 340 µm with output powers of 17 mW. Modulation experiments performed at the Israel Institute of Technology (Technion) showed a complex behavior of the QDs in the laser cavity. Despite the fact that the laser structure is not fully optimized for a high-speed device, data transmission capabilities of 15 Gb/s combined with low noise were achieved. To the best of the author`s knowledge, this renders the lasers the fastest QD devices operating at 1.55 µm. The thesis starts with an introductory chapter that pronounces the advantages of optical fiber communication in general. Chapter 2 will introduce the fundamental knowledge that is necessary to understand the importance of the active region`s dimensions for the performance of a diode laser. The novel growth concept and its experimental analysis are presented in chapter 3. Chapter 4 finally contains the work on diode lasers.