Sam: A Case Study Sam is a ten year old boy diagnosed with Pervasive Developmental Disorder-Not Otherwise Specified (PDD-NOS). “A person with PDD-NOS is given the diagnosis because they have some but not all characteristics of autism or who has relatively mild symptoms” (Autism Speaks‚ 2013). PDD-NOS is a general category used to describe a pattern of behavioral differences (which may include deviations‚ excesses‚ or difficulties) in the areas of social relating‚ communication‚ and attention/interest
Premium Pervasive developmental disorder Autism Asperger syndrome
Concrete is a composite product obtained artificially by hardening of mixture of cement‚ sand‚ gravel and water in pre-determined proportions. When these ingredients are mixed‚ they form a plastic mass which can be moulded in desired shape. It gets hardened into hard solid mass. Water is one of the important ingredients of concrete. This is required not only for chemical reaction‚ but also for curing purposes. The chemical reaction of cement and water‚ in the mix‚ is relatively slow and requires
Premium Concrete
To start‚ let’s establish what both an arch and concrete are. An arch is a curved structure that spans a space and may or may not support weight above it (Wikipedia). Concrete in the Roman period had a basis of what is called pozzolana‚ a chocolate-colored volcanic earth (Wilson‚ A‚ n.d). The Romans used both extensively and showcased these in their private dwellings‚ public buildings‚ statutes and the construction of town walls throughout the Roman empire. The arch itself was introduced to the
Premium
Ingredients for concrete are cement‚ fine aggregate‚ coarse aggregate and water. The best concrete can be obtained by mixing the ingredients in correct proportions. The ideal proportion of concrete will be that‚ which produces greatest strength and solidity at the least cost. In estimating the quantities of ingredients for cement concrete it should keep in mind that voids of coarse aggregates are filled up by sand and voids of fine aggregates are filled up by cement. The concrete mix of 1: 1: 2 and
Premium Concrete Construction aggregate
How do concrete and steel compare in the construction of large commercial buildings? Office buildings‚ Hotels‚ Sports Complexes‚ and other buildings have the purpose of bringing people inside. The goal is to keep occupants comfortable and safe‚ while keeping the cost associated withe the construction and maintenance of the building low. Both materials have advantages and disadvantages. However‚ when it comes right to it‚ the differences between the tow materials balance themselves out . There is
Premium Building Reinforced concrete Steel
ensure the structural system performs adequately during earthquake shaking. The horizontal elements can consist of truss elements or horizontal diagonal bracing and diaphragms are constructed as essentially solid‚ planar elements made of wood‚ steel‚ concrete or combinations of these. Fig.1.1 Isometric view of a basic building structural system comprising diaphragms‚ walls and frames‚ and foundation 1.1 Diaphragms Diaphragms serve multiple roles to resist gravity and lateral forces in buildings
Premium Force Shear stress Earthquake engineering
ADVANTAGES AND DISADVANTAGES OF PRESTRESSED CONCRETE ADVANTAGES : Use of high strength concrete and freedom from cracks‚ in prestressed members‚ contribute to improved durability under aggressive environmental conditions. The use of high strength concrete and high tensile steel in prestressed concrete members results in lighter and slender members than could be possible by using reinforced concrete and Mild steel as reinforcement. In prestressed concrete‚ steel is no longer required for reinforcement
Premium Concrete Structural engineering Tensile strength
Title no. 106-S64 TECHNICAL PAPER A Practical Equation for Elastic Modulus of Concrete by Takafumi Noguchi‚ Fuminori Tomosawa‚ Kamran M. Nemati‚ Bernardino M. Chiaia‚ and Alessandro P. Fantilli Many empirical equations for predicting the modulus of elasticity as a function of compressive strength can be found in the current literature. They are obtained from experiments performed on a restricted number of concrete specimens subjected to uniaxial compression. Thus‚ the existing equations cannot
Premium Concrete
CASE STUDY PEARL CONTINENTAL BY: MEHWISH MUMTAZ MFA I-D 2nd SEMISTER WHAT IS CASE STUDY? Case studies : • are written summaries or syntheses of real-life cases based upon data and research • require you to isolate and think through the key issues involved against both theory and the larger comparative environment • identify appropriate strategies for the resolution of the ’case’ • weigh the pros and cons of the remedial options/strategies
Premium Lighting HVAC Light
www.hbrreprints.org HBR CASE STUDY AND COMMENTARY Should Cheryl initiate an investigation at her new firm? The CEO’s Private Investigation Four commentators offer expert advice. by Joseph Finder • Reprint R0710A If there ever were a time when a chief executive should commission some quiet snooping on her colleagues‚ this might be it. HBR CASE STUDY The CEO’s Private Investigation COPYRIGHT © 2007 HARVARD BUSINESS SCHOOL PUBLISHING CORPORATION. ALL RIGHTS RESERVED
Premium Board of directors Corporate governance