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Applied Mechanics of Solids
03,600 DZDApplied Mechanics of Solids introduces the fundamental principles of solid mechanics, including stress, strain, elasticity, plasticity and material strength. It explains how materials and structures respond to applied forces and provides the essential concepts required to analyse, design and evaluate engineering components and structures across mechanical, civil and industrial engineering applications.
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Mechanical Engineering: Lectures and Answered Exercises
04,900 DZDThis book offers a clear and step-by-step educational approach to the main assembly techniques used in mechanical engineering.
It sets out the theoretical principles, calculation methods and design rules for the main structural components, illustrated by numerous worked examples.
Following a review of the fundamental concepts of materials strength, the various types of joints and the methods used to design them are examined using a rigorous approach in line with engineering practice.
The final chapter is devoted to the design of drive shafts, taking into account stress concentrations and dynamic loads.
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ALGERIA’S ENVIRONMENT AND BIODIVERSITY: fauna, flora and ecosystems
03,980 DZDA journey to the heart of Algeria’s biodiversity.
This book presents Algeria’s main biomes and 151 species of animals, plants and fungi that can be found in the wild.
Illustrated with original photographs taken in the field, it also provides accessible information on plants and fungi: edibility, medicinal properties and toxicity.
The result of several years of exploration and research, this book invites readers to discover, understand and appreciate Algeria’s natural riches, which remain largely unknown.
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Fundamentals and Physical Properties of Heusler Alloys
04,800 DZDThis book presents a comprehensive investigation of the structural, electronic, elastic and magnetic properties of Heusler alloys through a combination of theoretical modelling and experimental investigation, with particular emphasis on their potential for advanced multifunctional technological applications.
The first part focuses on the X2CrSb alloys (X = Mn, Co, Cu), which were investigated using Density Functional Theory. The results reveal the significant influence of atomic composition, pressure and structural stability on their electronic and magnetic properties. In particular, Mn₂CrSb undergoes a pressure-induced structural transition whilst maintaining half-metallic behaviour and high spin polarisation under specific conditions. Co₂CrSb also retains its half-metallicity and high spin polarisation upon expansion, whereas Cu₂CrSb exhibits weaker spin polarisation. These characteristics highlight the potential of Mn₂CrSb and Co₂CrSb for spintronic applications, including magnetic random-access memory, magnetic tunnel junctions and spin valves, whilst the metallic character of Cu₂CrSb suggests potential applications in pressure- and strain-sensing technologies.
The book also presents an experimental investigation of the quaternary Heusler system Co(2-x)Fe(x)CrSn (x = 0, 0.5, 1). Structural and microscopic analyses reveal the formation of a primary hexagonal phase, accompanied by the emergence of a secondary cubic phase with partial Fe substitution. The stabilisation of a hexagonal phase in this quaternary system is an uncommon feature amongst Heusler compounds and provides valuable insight into the role of atomic substitution in controlling their structural and physical properties.
By combining computational predictions with experimental observations, this work provides a comprehensive insight into the versatility of Heusler alloys and their potential for the development of functional materials. The findings contribute to a deeper understanding of structure–property relationships and offer promising prospects for applications in spintronics, magnetic sensing and other emerging technologies.
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IMPACT-NOTE: The mental reprogramming methodology derived from NLP and neuroscience.
02,500 DZDWhat if the only thing standing between you and the life you want is a piece of yellow paper?
Not a training course. Not a coach. Not yet another book you’ll read once and then forget.
Just a note — written with the right words, placed in the right spot, read at the right moment.
IMPACT-NOTE® is the method that works whilst you’re sleeping, cooking or brushing your teeth. Because it’s part of your everyday life — not just a matter of intention.
In this book, you’ll discover:
The neuroscience behind why Post-it notes reprogram your brain
50 NLP phrases tested on hundreds of clients
The strategic investment protocol that automates the system
6 real-life transformations: weight loss, business, marriage, depression — just one method
92 % of goals fail. Not because people lack courage. But because their environment keeps telling them their old story.
Rewrite history. Start with a note.
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PRIVATE CLINICS IN ALGERIA: Reasons for their emergence, operating models and prospects for development
04,300 DZDIn Algeria, the healthcare landscape has changed with the emergence and expansion of the for-profit private healthcare sector, particularly in the form of ‘private clinics’, thereby bringing an end to the public sector’s three-decade-long dominance. This has resulted in a hybrid healthcare system in which a public sector characterised by numerous shortcomings appears to be fuelling a rapidly growing private sector. A trend that began in the late 1980s, the expansion and considerable growth of this sector’s activities have continued unabated. After more than thirty years in existence, private hospital care has gradually spread across the whole country, although it is much more prevalent in the major cities. Today, 516 clinics are in operation, a third of which are dedicated to haemodialysis. Paradoxically, the momentum of the private healthcare sector has not been matched by the development of private health insurance, which for the time being remains very marginal. In 2021, turnover from health insurance accounted for 0.75% of the non-life insurance sector. The liberalisation of the healthcare sector has fuelled a debate characterised by bias and a lack of arguments based on studies and research. It is perceived by some analysts as the commodification of healthcare, which creates a two-tier healthcare system and contributes to widening inequalities in access to care. For others, it is desirable given the state of disrepair of the public sector and the inefficiencies that characterise it. As for clinic owners, they believe it is urgent to incorporate the dynamism of the private sector into national health policy. The public sector alone is unable to meet the ever-increasing demand for healthcare. The private sector, which is more flexible and responsive, should be accepted as a complementary player. Their main demand remains the establishment of contractual relationships with social security bodies, thereby ensuring that a much broader range of services can be covered. In this book, the author examines the reasons behind the emergence of private clinics, how they operate and the prospects they offer. To this end, two approaches have been combined. The first is macroeconomic in nature, drawing on data from health and administrative information systems. This data, which was often difficult to obtain, is at times incomplete or inconsistent in terms of the time period or scope covered. Whilst this presents a challenge, it also contributes to the value of the study. This initial data has enabled us to identify the key characteristics of private clinics. The second approach is microeconomic in nature, involving ad hoc exploratory surveys conducted in the wilayas of Algiers and Bejaia amongst 16 clinic founders and 40 permanent doctors at these clinics.
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Rational Mechanics: Lectures and Solutions to Exercises
04,100 DZDThis book serves as an introduction to the fundamental concepts of rational mechanics for undergraduate students. It offers a pedagogical, progressive and structured approach, combining theoretical foundations, practical examples, worked examples and revision exercises to facilitate learning and the development of skills in mechanical analysis.
The book covers the essential concepts of mechanics, vectors and moments of forces, the statics of rigid bodies and the conditions of equilibrium in a plane and in space, problems involving friction, as well as the fundamental methods of kinematic analysis of solids. It thus serves as a reference work for acquiring the knowledge essential for further study in science and mechanical engineering.
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A meditation on the intelligence and timelessness of the Universe: Reflections on Space and Time
21,000 DZDThis is an essay on Space and the unreality of Time, the power of the intellect and its intrinsic relationship to reality, and, finally, the purely intellectual quest for truth, the objectivity of which is applied in the sense of revelation, etc.
The implications of this first meditation extend to the very causes that disturb the ideal nature of the intellect and thereby hinder its process of perfectibility.
This marks the beginning of a lengthy philosophical reflection, devoid of anything uncertain or vague, initially seeking an ideal harmony within pure, objective reasoning, in order to gain greater clarity on the path of multidisciplinary research, where knowledge will serve intelligence, so as to attain a profound understanding of the truth thus revealed. -
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Kant’s fourth question: What is Man? From the epistemic approach to the anthropological approach
02,000 DZDThe Fourth Question: What is man?
Emmanuel Kant replied that this fundamental question alone encapsulates the entire project of his philosophy.
But how do we define what it means to be human in the modern age?
This book offers a thorough yet accessible exploration of Kantian thought. Beginning with the epistemological foundations of human knowledge and examining the modern «epistemological crisis»—in which science sometimes risks reducing human beings to mere machines—the book culminates in Kant’s pragmatic anthropology.
Through a fascinating reinterpretation, the author demonstrates how Kant’s anthropological approach restores to human beings their true nature: that of cultural, moral and profoundly free beings.
This book offers a powerful philosophical synthesis. It is aimed at students, teachers and enthusiasts keen to understand how theoretical reason and human freedom come together to define our human condition.
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Child Psychology – Jean Piaget
02,600 DZDThe foundations of children’s cognitive development, as set out by the pioneer of psychology.
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Capital in the Twenty-First Century – Thomas Piketty
03,500 DZDA comprehensive analysis of economic inequalities and how they have evolved.