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1. |
Record Nr. |
UNINA990009544010403321 |
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Autore |
Valletta, Sandro |
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Titolo |
Il diritto di famiglia nelle famiglie immigrate / Sandro Valletta |
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Pubbl/distr/stampa |
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ISBN |
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Descrizione fisica |
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Collana |
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Area 12 , Scienze giuridiche ; 339 |
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Disciplina |
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Locazione |
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Collocazione |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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2. |
Record Nr. |
UNINA9910671492303321 |
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Autore |
Steinhoff Gordon |
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Titolo |
Naturalness and biodiversity : policy and philosophy of conserving natural areas / / Gordon Steinhoff |
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Pubbl/distr/stampa |
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Washington, District of Columbia : , : Environmental Law Institute, , 2016 |
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©2016 |
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ISBN |
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Descrizione fisica |
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1 online resource (241 pages) |
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Disciplina |
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Soggetti |
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Biodiversity conservation - Law and legislation - United States |
Naturalness (Environmental sciences) - United States |
Ecosystem management - United States |
Electronic books. |
United States |
USA |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Nota di contenuto |
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Society and wilderness -- Interpreting the Wilderness Act of 1964 -- Prohibited uses and exceptions : how much manipulation of wilderness is too much? -- Naturalness and biodiversity -- Managing for naturalness in a changing world -- Ecological integrity in protected areas : two interpretations -- Citizen ideals vs. consumer preferences -- Restoring nature in protected areas -- Federal environmental impact statements : overly inflated needs result in needless environmental harm -- Why we should protect natural areas. |
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Sommario/riassunto |
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"Maintaining natural conditions and processes, or "naturalness," is an essential goal in the management of wilderness, national parks, and other protected areas. Yet management experts routinely recommend the abandonment of naturalness as a required goal in protected areas. There are many examples of native biodiversity being lost or threatened as a result of managers manipulating protected areas to conserve "what we value" without respect for natural conditions. Too often, agencies seemingly ignore environmental goals expressed within federal law and policy in their efforts to satisfy consumer preferences, resulting in environmental degradation. [This book] is primarily concerned with the preservation of national parks, wilderness, and other legally protected areas through proper interpretation and application of federal environmental law and policy. Philosophers, legal scholars, and land use managers alike will appreciate the interdisciplinary approach Prof. Gordon Steinhoff takes with his discussion of philosophy, ecology, and environmental policy. Although [this book] may be controversial, calling into question much that has been written by philosophers and by leading land management and restoration experts, it offers a needed response to much that appears in the current environmental literature, providing thoughtful analysis on why naturalness is essential for the preservation of native biodiversity." -- Back cover. |
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3. |
Record Nr. |
UNINA9910140506703321 |
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Autore |
Haussler-Combe Ulrich |
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Titolo |
Computational methods for reinforced concrete structures / / Ulrich Häussler-Combe |
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Pubbl/distr/stampa |
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Berlin, Germany : , : Ernst & Sohn, , 2015 |
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©2015 |
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ISBN |
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3-433-60363-4 |
3-433-60361-8 |
3-433-60362-6 |
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Edizione |
[2nd ed.] |
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Descrizione fisica |
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1 online resource (356 p.) |
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Disciplina |
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Soggetti |
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Buildings, Reinforced concrete |
Finite element method |
Reinforced concrete construction |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Cover; Title Page; Preface; Contents; Notations; 1 Finite Elements Overview; 1.1 Modeling Basics; 1.2 Discretization Outline; 1.3 Elements; 1.4 Material Behavior; 1.5 Weak Equilibrium and Spatial Discretization; 1.6 Numerical Integration and Solution Methods for Algebraic Systems; 1.7 Convergence; 2 Uniaxial Structural Concrete Behavior; 2.1 Scales and Short-Term Stress-Strain Behavior of Homogenized Concrete; 2.2 Long-Term Behavior - Creep and Imposed Strains; 2.3 Reinforcing Steel Stress-Strain Behavior; 2.4 Bond between Concrete and Reinforcing Steel; 2.5 The Smeared Crack Model |
2.6 The Reinforced Tension Bar2.7 Tension Stiffening of Reinforced Tension Bar; 3 Structural Beams and Frames; 3.1 Cross-Sectional Behavior; 3.1.1 Kinematics; 3.1.2 Linear Elastic Behavior; 3.1.3 Cracked Reinforced Concrete Behavior; 3.1.3.1 Compressive Zone and Internal Forces; 3.1.3.2 Linear Concrete Compressive Behavior with Reinforcement; 3.1.3.3 Nonlinear Behavior of Concrete and Reinforcement; 3.2 Equilibrium of Beams; 3.3 Finite Element Types for Plane Beams; 3.3.1 Basics; 3.3.2 Finite Elements for the Bernoulli Beam; 3.3.3 Finite Elements for the Timoshenko Beam |
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3.4 System Building and Solution Methods3.4.1 Elementwise Integration; 3.4.2 Transformation and Assemblage; 3.4.3 Kinematic Boundary Conditions and Solution; 3.5 Further Aspects of Reinforced Concrete; 3.5.1 Creep; 3.5.2 Temperature and Shrinkage; 3.5.3 Tension Stiffening; 3.5.4 Shear Stiffness for Reinforced Cracked Concrete Sections; 3.6 Prestressing; 3.7 Large Deformations and Second-Order Analysis; 3.8 Dynamics of Beams; 4 Strut-and-Tie Models; 4.1 Elastic Plate Solutions; 4.2 Modeling; 4.3 Solution Methods for Trusses; 4.4 Rigid-Plastic Truss Models; 4.5 More Application Aspects |
5 Multiaxial Concrete Material Behavior5.1 Basics; 5.1.1 Continua and Scales; 5.1.2 Characteristics of Concrete Behavior; 5.2 Continuum Mechanics; 5.2.1 Displacements and Strains; 5.2.2 Stresses and Material Laws; 5.2.3 Coordinate Transformations and Principal States; 5.3 Isotropy, Linearity, and Orthotropy; 5.3.1 Isotropy and Linear Elasticity; 5.3.2 Orthotropy; 5.3.3 Plane Stress and Strain; 5.4 Nonlinear Material Behavior; 5.4.1 Tangential Stiffness; 5.4.2 Principal Stress Space and Isotropic Strength; 5.4.3 Strength of Concrete |
5.4.4 Phenomenological Approach for the Biaxial Anisotropic Stress-Strain Behavior5.5 Isotropic Plasticity; 5.5.1 A Framework for Multiaxial Elastoplasticity; 5.5.2 Pressure-Dependent Yield Functions; 5.6 Isotropic Damage; 5.7 Multiaxial Crack Modeling; 5.7.1 Basic Concepts of Crack Modeling; 5.7.2 Multiaxial Smeared Crack Model; 5.8 The Microplane Model; 5.9 Localization and Regularization; 5.9.1 Mesh Dependency; 5.9.2 Regularization; 5.9.3 Gradient Damage; 5.10 General Requirements for Material Laws; 6 Plates; 6.1 Lower Bound Limit Analysis; 6.1.1 The General Approach |
6.1.2 Reinforced Concrete Contributions |
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Sommario/riassunto |
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The book covers the application of numerical methods to reinforced concrete structures. To analyze reinforced concrete structures linear elastic theories are inadequate because of cracking, bond and the nonlinear and time dependent behavior of both concrete and reinforcement. These effects have to be considered for a realistic assessment of the behavior of reinforced concrete structures with respect to ultimate limit states and serviceability limit states.The book gives a compact review of finite element and other numerical methods. The key to these methods is through a proper description of m |
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