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Mathias, Neville,Ranaudo, Francesco,Sarkisian, Mark Council on Tall Building and Urban Habitat Korea 2016 International journal of high-rise buildings Vol.5 No.1
The concept of introducing viscous damping devices between outriggers and perimeter columns in tall buildings to provide supplementary damping and improve performance, reduce structural costs, and increase available usable area was developed and implemented by Smith and Willford (2007). It was recognized that the relative vertical movement that would occur between the ends of outriggers and columns, if they were not connected, could be used to generate damping. The movements, and correspondingly damping, can potentially be significantly increased by amplifying them using simple "mechanisms". The mechanisms also make it possible to increase the number of available dampers and thus further increase supplementary damping. The feasibility of mechanisms to amplify supplementary damping and enhance structural performance of tall, slender buildings is studied with particular focus on its efficacy in improving structural performance in wind loads.
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Site | Structure | Architecture - Projects that Create Change
Chow, Leo,AIA, AIA,Sarkisian, Mark P.,LEED, PE SE Council on Tall Building and Urban Habitat Korea 2017 International journal of high-rise buildings Vol.6 No.3
China's rapid growth has created great opportunities for design and construction of projects that not only transform sites but cities. This work combines local, national, and international expertise in developing memorable designs that seek to humanize urban life and emphasize the importance of visionary clients. Innovative examples of work in China will be presented with emphasis on three iconic projects designed and built for Poly Corporation based in China. These projects include developments in Beijing and Guangzhou and introduce the use of locally supplied materials and construction techniques. The Poly Corporate Headquarters, the Poly Real Estate Headquarters, and the Poly International Plaza, and will be described through innovative ideas that integrate urban planning, structure, and architecture.
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Influence of Work Characteristics on the Association Between Police Stress and Sleep Quality
Ma, Claudia C.,Hartley, Tara A.,Sarkisian, Khachatur,Fekedulegn, Desta,Mnatsakanova, Anna,Owens, Sherry,Gu, Ja Kook,Tinney-Zara, Cathy,Violanti, John M.,Andrew, Michael E. Occupational Safety and Health Research Institute 2019 Safety and health at work Vol.10 No.1
Background: Police officers' stress perception, frequency of stressful events (stressors), and police work characteristics may contribute to poor sleep quality through different mechanisms. Methods: We investigated associations of stress severity (measured by stress rating score) and frequency of stressors with sleep quality and examined the influence of police work characteristics including workload, police rank, prior military experience, and shift work on the associations. Participants were 356 police officers (256 men and 100 women) enrolled in the Buffalo Cardio-Metabolic Occupational Police Stress Study from 2004 to 2009. A mean stress rating score and mean frequency of stressors occurring in the past month were computed for each participant from the Spielberger Police Stress Survey data. Sleep quality was assessed using the global score derived from the Pittsburgh Sleep Quality Index survey. Linear associations of the stress rating score and frequency of stressors with sleep quality (Pittsburgh Sleep Quality Index global score) were tested. Age, sex, race/ethnicity, and smoking status were selected as potential confounders. Results: The stress rating score was positively and independently associated with poor sleep quality (${\beta}=0.17$, p = 0.002). Only workload significantly modified this association (${\beta}=0.23$, p = 0.001 for high workload group; p-interaction = 0.109). The frequency of stressors was positively and independently associated with poor sleep quality (${\beta}=0.13$, p = 0.025). Only police rank significantly modified the association (${\beta}=0.007$, p = 0.004 for detectives/other executives; p-interaction = 0.076). Conclusion: Both police officers' perception of stress severity and the frequency of stressors are associated with poor sleep quality. Stress coping or sleep promotion regimens may be more beneficial among police officers reporting high workloads.
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Influence of Work Characteristics on the Association Between Police Stress and Sleep Quality
Claudia C. Ma,Tara A. Hartley,Khachatur Sarkisian,Desta Fekedulegn,Anna Mnatsakanova,Sherry Owens,Ja Kook Gu,Cathy Tinney-Zara,John M. Violanti,Michael E. Andrew 한국산업안전보건공단 산업안전보건연구원 2019 Safety and health at work Vol.10 No.1
Background: Police officers’ stress perception, frequency of stressful events (stressors), and police work characteristics may contribute to poor sleep quality through different mechanisms. Methods: We investigated associations of stress severity (measured by stress rating score) and frequency of stressors with sleep quality and examined the influence of police work characteristics including workload, police rank, prior military experience, and shift work on the associations. Participants were 356 police officers (256 men and 100 women) enrolled in the Buffalo Cardio-Metabolic Occupational Police Stress Study from 2004 to 2009. A mean stress rating score and mean frequency of stressors occurring in the past month were computed for each participant from the Spielberger Police Stress Survey data. Sleep quality was assessed using the global score derived from the Pittsburgh Sleep Quality Index survey. Linear associations of the stress rating score and frequency of stressors with sleep quality (Pittsburgh Sleep Quality Index global score) were tested. Age, sex, race/ethnicity, and smoking status were selected as potential confounders. Results: The stress rating score was positively and independently associated with poor sleep quality (b ¼ 0.17, p ¼ 0.002). Only workload significantly modified this association (b ¼ 0.23, p ¼ 0.001 for high workload group; p-interaction ¼ 0.109). The frequency of stressors was positively and independently associated with poor sleep quality (b ¼ 0.13, p ¼ 0.025). Only police rank significantly modified the association (b ¼ 0.007, p ¼ 0.004 for detectives/other executives; p-interaction ¼ 0.076). Conclusion: Both police officers’ perception of stress severity and the frequency of stressors are associated with poor sleep quality. Stress coping or sleep promotion regimens may be more beneficial among police officers reporting high workloads.
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