The efficiency of noise barriers largely depends on their geometry. In this paper, the performance of noise barriers was simulated using the numerical Boundary Element Method (BEM). Traffic noise was particularly considered with its standardized noise spectrum adapted to human hearing. The cross-section of the barriers was varied with the goal of finding the optimum shape in comparison to class...

Background and objectives: Accreditation is a widely used mechanism to keep organization adherent to the established standards. The aim of the study was to identify barriers towards promotion of accreditation in the Iranian hospitals, and exploring the potential overcoming strategies.   Methods: A qualitative study design was adopted. Data were collected using a questionnaire with open questi...

Our research group has been investigating various aspects of graphics recognition techniques for more than ten years. We have worked on map analysis, symbol recognition, dimension analysis and the conversion of engineering drawings to CAD models. Lately, we are also conducting research on the interpretation of architectural drawings. In addition, we have built up a software platform of generic ...

Reprogramming of somatic cells to induced pluripotent stem cells (iPSCs) holds enormous promise for regenerative medicine. To elucidate endogenous barriers limiting this process, we systematically dissected human cellular reprogramming by combining a genome-wide RNAi screen, innovative computational methods, extensive single-hit validation, and mechanistic investigation of relevant pathways and...

references 1. juckett g, hartman-adams h. human papillomavirus: clinical manifestations and prevention. american family physician. 2010; 82(10): 1209-14. 2. world health organization. human papillomavirus infection and cervical cancer, 2012. [http://www.who.int/gho/publications/world_health_statis tics/en_whs2012_full.pdf ] 3. forouzanfar mh, foreman kj, delossantos am, lozano r, lopez ad, murr...

nowadays, thousands tons of chemicals material are used to increase agricultural production that provides a risky situation for the communities. recently, biological or organic agriculture is considered to get rid of such problems. but this style of agriculture is facing with many difficulties and challenges. this study was performed in three phases by using delphi method. in this regard, the s...

Through advances in production and treatment technologies, transparent glass has become an increasingly versatile material and a global hallmark of modern architecture. In the shape of invisible barriers, it defines spaces while simultaneously shaping their lighting, noise, and climate conditions. Despite these unique architectural qualities, little is known regarding the human experience with ...