Economic and political reforms have been introduced in Ethiopia and these have boosted private investment over the last two decades. Reforms have brought about measurable improvements, but the progress of the status of private investment has remained slow. This study was conducted with the objective of investigating the microeconomic level determinants of private investment in the manufacturing sector. These micro-level determinants of private investment in the State of Tigray, Ethiopia, were analysed using both descriptive and econometric methods. Thus, an econometric method of data analysis using a duration model was applied to analyse the microeconomic data collected. In addition, descriptive analysis was employed to analyse the survey data. Here, a chi-square test and factor analysis were used to analyse the relationship between variables and their constraints on the operations of the manufacturing sector. The major microeconomic determinants of private investment status in the State of Tigray were found to be investment areas, access to credit, infrastructure facilities, the judicial system, corruption, investment incentives and bureaucratic red tape. The econometric result revealed that infrastructure facilities, the judicial system, and investment areas negatively and significantly delayed the entire private investment status. However, interest rates and investment location were positively and significantly supported to continue their status of the entire private investors in the manufacturing sector. Infrastructure facilities, investment incentives, and investment areas were negatively and significantly related to the started group of investors’ progress. However, investment location was related positively and significantly to the started group and the ability of the implementation and operation statuses of private investors to proceed to operation status. In the case of the non-started group, infrastructure facilities and investment areas are related significantly and negatively to investment status delay. By contrast, interest rates and investment location significantly and positively affect private investment status delay. According to the descriptive analysis, access to credit, bureaucratic red tape and corruption were the additional major factors that hinder private investment from progressing from one xii status to the next. The investor’s level of education, access to land and political instability risks in the survey were not determinants of private investment status. In addition, the survey of private investors for those who have already started production shows that infrastructural, technological, and economic and financial factors have the highest absolute value of the loading factors that hinders operations in the manufacturing sector. The results of this study revealed that most of the problems encountered in the manufacturing sector were institutional but some were related to the private investors themselves. Thus, the government should take measures to establish a true, independent and efficient institution so as to create access to credit and provide infrastructure facilities to the private sector. This could be done by minimising corruption and ensuring transparent investment regulations. Thus, the State of Tigray, Ethiopia, must attract and encourage private investors by applying and improving policies which promote private investment. In this way they will actively contribute to the overall development and growth of the Ethiopian economy. Finally, as this study is made on the causes of delay in each phases of investment, it contributes a new knowledge to all investment sectors in the developing countries as whole and particularly to all regions of Ethiopia for advanced polices and strategies development on investment decisions. Then, based on the results of the study and solving these identified problems of investment phases, all actors of investment can retain and encourage the existing and attract new private investors to enhance the economic development of the society. The findings from this study have important implications for prospective business owners, lenders, and policy makers on how to improve private investment and create conducive business environment. / Business Management / D.B.L.

The utilisation of navigation systems in cars has given rise to road safety concerns, and the design and functionality of such systems must therefore be adjusted to the users’ needs, since they have to divide their attention between driving and the operation of the navigation system. The study was aimed at finding the optimum system response time (SRT) which would enable a driver to focus as much as possible on the road while attaining an efficient task completion time using an electronic navigational system. The research project consists of two separate experiments and was completed by 10 subjects. Experiment 1 included a temporal reproduction task and a secondary memory task. The subjects had to memorise two symbols and then reproduce six time spans ranging from 1 to 30 s to provide a baseline measurement of their time estimation abilities. Experiment 2 consisted of a simulated automobile driving task. While driving in the simulator the subjects completed a memorising task displayed on a touch screen. The task was presented with seven different system response times (SRTs) ranging from 0 to 30 s. The effects of different SRTs on the eye movement from road to monitor, regarding the duration of fixation and the frequency of change were evaluated. The distribution of gazes to the secondary task was analysed to provide information about the time estimation performance in the driving simulator. Other dependent variables tested were the accuracy of selected items, memory game performance, drive performance and the subjective state of the test person. The results of this study can be employed to find the optimum duration of inter-task delays for in-vehicle technical devices. / Psychology / M.A. (Psychology)

Ce travail se focalise sur le parler du tarifit de la province de Nador, afin d’étudier la gémination dans cette variante du berbère, parlée au Maroc. Il s’agit d’une investigation articulatoire cinéradiographique et acoustique. Un aperçu général du système phonologique du tarifit est proposé. Dans la revue critique de l’état de la question, nous avons tenté, d’abord, de montrer les différents arguments relatifs à la représentation des géminées en un seul segment ou en une suite de deux segments. Nous avons ensuite évoqué les débats contradictoires sur les notions de tension et de gémination. Notre recherche est conduite dans le cadre du paradigme de la perturbation et des réajustements, en variant la vitesse d’élocution. Les résultats principaux dans le domaine acoustique montrent, pour toutes les consonnes, simples et géminées, produites en vitesse d'élocution normale ou rapide, que la durée de la tenue consonantique est l’indice principal qui permet de les distinguer. Au niveau articulatoire, l’étude du timing des paramètres articulatoires indique, entre autres, que c’est le contact apical, vélaire et uvulaire, plus long pour la géminée, qui est le paramètre préférentiel de la distinction phonologique simple vs. géminée. L’analyse des vues de profil donne les résultats suivants en ce qui concerne l’étendue de contact (mm) : a) l’étendue de contact des occlusives est systématiquement plus importante pour les géminées que pour les simples ; b) l’étendue de contact augmente de la consonne apical, au vélaire (réalisée plutôt palatale), puis à l’uvulaire. Les résultats sont discutés en termes de relations articulatori - acoustiques. / This work focuses on tarifit of the provinces of Nador, in order to study gemination in this variant of Berber spoken in Morocco. This is an acoustic and articulatory X-ray investigation. A general overview of the tarifit phonological system is proposed. In a critical review of the literature, we tried, first, to show the different arguments concerning representation of geminates as one or as a sequence of two segments. We then discussed the contradictory debates on the concepts of tension and gemination. Our research is carried out within the perturbation and readjustments paradigm, by varying speech rates. Main results in the acoustic domain show for all consonants, singletons and geminates, produced in normal or fast speech, that consonantal closure is the main cue that allows distinguishing them. On the articulatory level, the study of the timing of articulatory parameters indicates, among other things, that it is the apical, velar and uvular contact, longer for geminates, which is the preferred parameter of the singleton vs. geminate phonological distinction. Analysis of profile views gives the following results regarding contact extent (mm) : a) contact extent for plosives are systematically larger for geminates than for singletons ; b) contact extent increases as one goes from the apical consonant to the velar (rather palatal) consonant, then to the uvular consonant. Results are discussed in terms of articulatory - acoustic relations.

Cette étude porte sur l'arabe standard parlé par des locuteurs algériens (trois femmes et trois hommes). Notre objectif était d'apporter des précisions quant au système consonantique de cette langue, en particulier les fricatives. Ce système est riche en lieux d'articulation: labiodental,interdental, alvéolaire, postalvéolaire, uvulaire, pharyngal et laryngale. Il est également caractérisé par le phénomène de la pharyngalisation lié à deux paires de fricatives, les interdentales et les alvéolaires. A travers cette étude à visée acoustique, nous nous sommes focalisée sur les propriétés relatives au bruit de friction des fricatives, en calculant son centre de gravité (CoG). Nous nous sommes intéressée également aux caractéristiques des quatre premiers formants des voyelles [a]brève et [a:] longue à proximité des fricatives, dans les séquences d'ordre CV. Puis, nous avons étudié la durée segmentale absolue et relative, l'intensité relative et l'harmonicité (HNR) des quatorze fricatives de cette langue, en ciblant leur lieu d'articulation, et le trait phonologique de leur voisement. Enfin, nous avons relevé les particularités phonétiques des lieux postérieurs, uvulaire, pharyngal et laryngal qui se sont révélés intéressants en tant qu'indices phonétiques discriminants. / This acoustic study focuses on standard Arabic, spoken by Algerian subjects (three female and three male subjects). The main thrust of the investigations is to provide clarification on the consonantal system of the language, and more particularly on the acoustic properties of its fricatives. This system is rich in places of articulation: labiodental, interdental, alveolar, postalveolair, uvular, pharyngeal and laryngeal. It is also characterized by the phenomenon of pharyngalisation, appearing in two pairs of fricatives: the interdental and alveolar fricatives. Based on our acoustic study, we have observed the properties relating to the frication noise of fricatives by calculating their center of gravity (CoG). We have also discussed the characteristics of the first four formants of the back vowels, short [a] and long [a:], in the vicinity of the fricatives, in CV sequences. Then, we have study absolute and relative segmental durations, relative intensity and harmonicity (HNR) of the fourteen fricatives of our study. This analyse was carried out to target their place of articulation and the phonological voicing contrast. Finally, we have tried to address the features of posterior locations, uvular, pharyngeal and laryngeal, which proved to be relevant as contrastive phonetic cues

Mundialmente, assistimos ao crescente envelhecimento populacional. As projeções para a América Latina indicam que para o ano 2050 uma em cada quatro pessoas será idosa (Caire, 2013). O Chile compartilha esta tendência mundial, fazendo parte dos quatro países mais envelhecidos da América Latina que incluem Argentina, Cuba e Uruguai. Esse contexto impõe desafios aos diferentes países, e a discussão dos aspectos sociais, econômicos, de bem-estar e previdência social é imperativa. A Antropologia discute sobre o envelhecimento e a velhice nas sociedades contemporâneas, problematizando a necessidade de desconstrução de certas abordagens e considerando a heterogeneidade desse processo. A evidência demográfica é uma característica própria desse fenômeno na atualidade, estudá-la envolve não cair em um determinismo demográfico nem biológico, abrindo a discussão sobre as condições sociais e culturais de sua expressão na sociedade contemporânea (Guillemard, 2005). Através da Etnografia da duração (Eckert e Rocha, 2011) a tese dá conta das multiplicidades de estilos de vida e de tempos se passando em uma pequena cidade (Bozon, 1984) mineradora, localizada no Norte do Chile, Inca de Oro. Para compreender o processo de envelhecimento e a vivência da velhice, a tese objetiva o estudo do tempo através das narrativas dos idosos e das idosas do vilarejo, visando a análise mediante o estudo da memória (Halbwachs, 2011). Também discute as questões do corpo, pois é nele que se evidencia a passagem do tempo (Fassin, 2007). Envelhecer e experienciar a velhice em Inca de Oro adquire particularidades próprias que surgem, mantêm-se e enquadram-se sob o abrigo da estrutura social do povoado, estrutura demarcada pela pirquineria - mineração artesanal de exploração de ouro, e pela presença de valores provenientes das sociedades industriais e sociedades indígenas andinas. No entanto, a pesquisa também mostra como, dentro dos limites sociais aceitos e das normatividades de gênero e idade imperantes no povoado, os idosos e as idosas ― interlocutores desta pesquisa ― negociam sua realidade (Velho, 2013), servindo-se de diferentes agenciamentos em sua vida cotidiana (Das apud Ortega, 2008). / At a global level, we are observing the growth of elderly population. By the year 2050, projections for Latin America indicate that one in four people will be an elder (Caire, 2013). Chile shares this global trend, being one of the four countries in Latin America with a high elderly population rate, along with Argentina, Cuba and Uruguay. This context poses new challenges to these countries, as well as makes imperative the need of a formal discussion on social, economic, welfare, and social security topics related to this issue. In this sense, anthropological discussions on old age/aging in contemporary societies, problematize the necessity to deconstruct some of the old school approaches on it and make us reconsider instead, the heterogeneity of this process. Even though, demographic reality is a clear evidence of this phenomenon today, its study requires to avoid falling into quantitative or biological determinism, and to open the discussion on the social and cultural issues related to it in contemporary societies (Guillemard, 2005). By applying the “Ethnography of Duration” approach (Eckert and Rocha, 2011), this dissertation investigates the multiplicity of lifestyles and the perception of time among the elderly in a small mining town, Inca de Oro, located in the northern of Chile. In order to better understand the aging process and the experience of becoming old, the aim of this dissertation is to study time passage through the narratives of the elderly in the village, and also the analysis of memory (Halbwachs, 2011). At the same time, and since the passing of time becomes more evident on the body (Fassin, 2007), a discussion on issues related to it is presented in here. Aging and experiencing old age at Inca de Oro acquires peculiarities that emerge, are maintained, and should be understood in the village’s own context of the social structure. A structure outlined by the activity of pirquineria - artisanal gold mining exploitation- and also by the presence cultural values from indigenous Andean societies. Finally, this investigation shows how, female and male elderly - interlocutors of this research - negotiate their reality (Velho, 2013), as agents through their daily life (Das in Ortega, 2008), within the accepted social limits and norms of gender and age prevailing in the village.

Este trabalho analisou o papel do Legislativo na política externa brasileira (PEB), para verificar se sua atuação nesse tema é independente ou se ele se restringe a ser mera instância burocrática, no processo de aperfeiçoamento do ato internacional. Tomando para universo de pesquisa os atos internacionais, encaminhados para referendo do Congresso Nacional nos dois Governos de Fernando Henrique Cardoso e no primeiro Governo Lula, que versavam sobre Economia e Mercosul, o estudo, utilizando como elementos de análise os conceitos de compatibilidade e consenso e o tempo de tramitação, avaliou a correlação entre o tempo de tramitação do ato internacional no Executivo e o seu tempo de tramitação nas duas Casas do Congresso Nacional para determinar se, no processo legislativo de referendo, houve submissão da vontade do Legislativo à do Executivo; cooperação com o Executivo; ou atuação independente, em oposição ao Executivo, na defesa de interesses de grupos de pressão com capacidade para interferir nos trabalhos legislativos. Os resultados encontrados indicaram a ocorrência, no decorrer do processo legislativo de referendo do ato internacional, de duas dessas três situações. As Casas do Congresso Nacional, no exercício de suas atribuições constitucionais, tanto atuam em coordenação, para acelerar o processo de referendo ou para retardá-lo, como em oposição ao Executivo, dando espaço para grupos de pressão interferirem no processo de referendo do ato internacional, sendo que a singularidade da participação do Legislativo na política externa brasileira, a qual induz a que não seja reconhecida a importância do papel que ele desempenha no tema, é o fato de que sua atuação não se dá, preferencialmente, pela apresentação de emendas ou rejeição do ato internacional, mas pelo uso do tempo de tramitação do processo legislativo de referendo como instrumento de manifestação de sua posição em relação ao conteúdo desse ato

Made available in DSpace on 2016-06-02T20:13:11Z (GMT). No. of bitstreams: 1 3232.pdf: 1328301 bytes, checksum: 60adec1a9eb134f166cacde0639d4546 (MD5) Previous issue date: 2010-03-12 / Financiadora de Estudos e Projetos / In this work, our aim is to show how Bergson s consciousness analysis is linked to his ontology. For that, we will begin with an analysis of temporal dimensions that are implicit in the idea of duration. Then, we will approach the idea that Bergson thinks our consciousness as a temporal field within past, present and future are linked. From there, we will try to show that this temporal field acknowledges several levels, as he put forward by his degrees of duration s theory. Thereafter, we will be ready to display the internal link between temporality and ontology according to Bergson, insofar our consciousness will be, for the French philosopher, just one of varied levels composing real s internal structure, insomuch other degrees of duration can be thought being high or low from this average temporal degree that our subjectivity is. Low: minimal temporality of our own body and lowermost duration of the matter. High: the concretion of duration or eternity of life , which is going to be called God by Bergson. In all these cases, the point is to think in duration, that is, to think varied strata of real by their temporal features, defining their respective places in a sole temporal structure, that we can go through by our own being s immanent intuition, in a movemente which Bergson will assert to be the metaphysics itself . These varied degrees of duration, in turn, will reveal being in a reverse relation to the consciousness extension: the bigger the past contraction made by our consciousness, that is, the bigger its intensity, the lesser its extension in the world. We will attempt to show that this idea of a reverse relation between the duration degrees and extension ones permeates a large part of Bergson s work, and it is very helpful in order to make Bergson s work clearer. Finally, our aim is to show how Bergson thinks his ontology from a genetic point of view: for that, we will elucidate what the concept of vital impulse hides and we will understand what the singular procession presented by Bergson in the third chapter of Creative Evolution consists of. / No presente trabalho, procuraremos mostrar como se articulam a análise da consciência de tempo empreendida por Bergson e sua ontologia. Para tanto, partiremos de uma análise das dimensões temporais implícitas na ideia de duração, para daí chegar à ideia de que Bergson pensa nossa consciência como um campo temporal onde se articulam passado, presente e futuro. A partir disso, buscaremos mostrar que esse campo temporal admite para Bergson diversos níveis, como ele procurou mostrar por meio de sua teoria dos graus de duração. Será a partir desse momento que poderemos mostrar a articulação interna entre temporalidade e ontologia para Bergson, na medida em que nossa consciência será para o filósofo francês somente um dos diversos níveis que compõem a estrutura interna do real, sendo que diversos outros graus de duração podem ser pensados acima e abaixo dessa faixa temporal mediana que é a nossa subjetividade. Abaixo: a temporalidade mínima de nosso corpo próprio e a duração ínfima da matéria. Acima: a concreção da duração ou eternidade de vida , que Bergson chamará de Deus. Em todos estes casos, tratar-se-á de pensar em duração, isto é, de pensar os diversos estratos do real a partir de seus aspectos temporais, definindo seus respectivos lugares numa estrutura temporal única, que podemos percorrer por meio de uma intuição imanente de nosso próprio ser, num movimento que Bergson declarará ser a própria metafísica . Esses diversos graus de duração, por sua vez, revelarão estar numa relação inversa com a extensão da consciência: quanto maior a contração do passado operada por nossa consciência, isto é, quanto maior sua intensidade, menor a extensão que ela ocupa no mundo. Buscaremos mostrar que essa ideia de uma relação inversa entre os graus de duração e de extensão permeia grande parte da obra de Bergson, e nos ajuda bastante a esclarecê-la. Por fim, buscaremos mostrar como Bergson pensa sua ontologia de um ponto de vista genético: para tanto, buscaremos elucidar o que está por trás do conceito de impulso vital e compreender no que consiste a singular processão que Bergson nos apresenta no terceiro capítulo de A evolução criadora.

Made available in DSpace on 2016-06-02T20:13:15Z (GMT). No. of bitstreams: 1 6132.pdf: 851637 bytes, checksum: 6881ffcd8203c0ce0d1033adc3eed7be (MD5) Previous issue date: 2014-08-29 / Financiadora de Estudos e Projetos / This work is aimed at investigating the inner life in Bergson s first book, Time and Free Will An essay on the immediate data of consciousness (1889). We try to analyze especially the notions of duration and space in light of what we call the divided self , i.e., the division established by Bergson between the superficial self related to space, social life and language and the deap-seated self which concerns the pure duration of consciousness, the continuous multiplicity of interpenetration of psychological states and creating and unpredictability that constitutes each free act. At the end, and already in possession of the conclusions on the Essay, we will discuss the bergsonian intuitive method and its relationship with the divided self. / Este trabalho tem por intuito investigar a vida interior no primeiro livro de Bergson, Ensaio sobre os dados imediatos da consciência, de 1889. Trataremos de analisar sobretudo as noções de duração e espaço à luz daquilo que chamamos o eu dividido , isto é, a divisão estabelecida por Bergson entre o eu superficial relacionado ao espaço, à vida social e à linguagem e o eu profundo o qual diz respeito à duração pura da consciência, à multiplicidade contínua de interpenetração dos estados psicológicos e da criação e imprevisibilidade constituintes de cada ato livre. Ao final, e já de posse das conclusões acerca do Ensaio, discorreremos sobre o método intuitivo bergsoniano e sua relação com o eu dividido.

Made available in DSpace on 2016-06-02T20:23:16Z (GMT). No. of bitstreams: 1 6323.pdf: 10772992 bytes, checksum: 813a1652f063e5d074e1dbf75a29212c (MD5) Previous issue date: 2014-04-29 / Universidade Federal de Minas Gerais / This work aims to discuss the cinema of Carlos Reygadas, with the focuses on the importance of sound and its dynamics within the long duration take, a procedure that strongly characterizes the style of this director. Initially, excerpts from films Japón (2002), Battle in Heaven (2005) and Silent Light (2007) were analyzed to highlight the formation of a stylistic corpus and a predominantly contemplative and sensory conception of cinema. Then we elected Silent Light as a conductive thread of a broader analysis in relation to the main crop. Therefore, we had as main references studies by David Bordwell (2008) on traditional directors of the plan-sequence, as well as the categories and theoretical assumptions of Michel Chion (1994, 2009) on the uses of sound in cinema. / Esta dissertação tem por objetivo discutir o cinema de Carlos Reygadas, sob um recorte que se concentra especificamente na importância do som e de sua dinâmica no interior dos planos de longa duração, procedimento que caracteriza fortemente o estilo deste diretor. Inicialmente, trecho dos filmes Japón (2002), Batalha no Céu (2005) e Luz Silenciosa (2007) foram analisados para salientar a conformação de um corpus estilístico e de uma concepção de cinema de caráter predominantemente contemplativo e sensorial. Em seguida, elegemos Luz Silenciosa como o fio condutor de uma análise mais abrangente em relação ao principal recorte. Para tanto, tivemos como principais referências os estudos de David Bordwell (2008) sobre tradicionais diretores do plano-sequência, bem como as categorias e pressupostos teóricos de Michel Chion (1994; 2009) sobre usos do som no cinema.

A duração da combustão tem implicação direta na determinação do trabalho negativo no ciclo motor. A duração da combustão tem relação inversa com a velocidade de propagação da chama. Assim, quanto maior a velocidade de propagação da chama, menor a duração da combustão. Além disto, a duração da combustão está relacionada com a relação volumétrica de compressão, com a razão de mistura e com o tipo de combustível, entre outros fatores. Neste sentido, quanto maior a velocidade de queima da mistura ar-combustível, menor o trabalho negativo no ciclo. Neste contexto, foram ensaiadas 3 relações de compressão e 3 razões de mistura, para 6 combustíveis de composição conhecida: gasolina comum tipo C, álcool etílico hidratado combustível (AEHC) e AEHC adicionado à gasolina comum tipo C nas proporções de 20%, 40%, 60% e 80%. A variação da pressão no interior da câmara de combustão, para todos os combustíveis, e a posição da centelha de ignição foram determinadas com a utilização da base angular e com variação da relação volumétrica de compressão e da razão de mistura. O diagrama , para fins de cálculo de área, foi traçado por pós-processamento. Os resultados obtidos indicam que a duração da combustão aumenta com o aumento da razão de mistura e diminui com o aumento da relação volumétrica de compressão, para todos os combustíveis ensaiados. Verificou-se que a amplitude da pressão, no interior da câmara de combustão, se comporta inversamente à duração da combustão. Mostrou-se que o aumento da razão de mistura implica na redução do trabalho líquido entregue ao êmbolo ao longo de todo o ciclo do motor. Opostamente ocorre com o aumento da relação volumétrica de compressão, que implica no aumento do trabalho líquido por ciclo. Concluiu-se que o máximo valor para o trabalho líquido ao longo de todo o ciclo foi obtido para a maior relação volumétrica de compressão (8:1) e a menor razão de mistura (λ = 0,9). O combustível que representou este resultado foi o álcool etílico hidratado combustível adicionado à gasolina comum tipo C em 80% (AEHC80). O mínimo valor para o trabalho líquido, ao longo de todo o ciclo foi obtido, para a menor relação volumétrica de compressão (6:1) e a maior razão de mistura dos ensaios (λ = 1,1). O combustível que representou este resultado foi o álcool etílico hidratado combustível (AEHC). / The duration of the combustion is directly implicative on determining the negative work of the motor cycle. The duration of the combustion has an inverse relation with the flame propagation speed. Thus, the higher propagation of the flame, the shorter duration of the combustion. Besides that, the duration of the combustion is related to the relation of compression, to the air/fuel relation and to the type of fuel, among other factors. In this way, the higher burning speed of the air/fuel mixture, the smallest negative work in the cycle. In such a context, there were tried three compression relations and three mixture ratios for six fuels of know compositions: ordinary gasoline C type, combustible hydrated ethyl alcohol and combustible hydrated ethyl alcohol added to ordinary gasoline C type in the proportions of 20%, 40%, 60% and 80%. The pressure variation inside the combustion chamber, for all fuels, and the position of the ignition spark were determined using the angular base and with variation of the compression relation and the mixture ratio. The diagram, for area calculation, was traced by post processing. The obtained results indicate that the combustion duration increases with the rising of the mixture ratio and decreases with the rising of the compression relation, for all the tried combustibles. It was found that the pressure amplitude inside the combustion chamber behaves inversely to the combustion duration behavior. It was shown that the rising of the mixture ratio implies on the reduction of the net work delivered by the piston all through the cycle of the motor. The opposite occurs with the rising of the compression relation, that implies on the increase of the net work by cycle. It was concluded that the maximum value for the net work all through the cycle was obtained for the higher compression relation (8:1) and the least mixture ratio of the tests (λ = 0,9). The combustible that achieved such a result was the combustible hydrated ethyl alcohol added to ordinary gasoline C type in 80%. The least value for the net work all through the cycle was obtained by the least compression relation (6:1) and the highest mixture ratio of the tests (λ = 1,1). The fuel that achieved that result was the combustible hydrated ethyl alcohol.