scholarly journals Critical Appraisal of Data Acquisition in Body Composition: Evaluation of Methods, Techniques and Technologies on the Anatomical Tissue-System Level

10.5772/10446 ◽  
2010 ◽  
Author(s):  
Aldo Scafoglieri ◽  
Steven Provyn ◽  
Ivan Bautmans ◽  
Joanne Wallace ◽  
Laura Sutton ◽  
...  
Keyword(s):  
Body Composition ◽  
Data Acquisition ◽  
Critical Appraisal ◽  
System Level ◽  
Tissue System ◽  
Evaluation Of Methods

scholarly journals Critical Appraisal of Selected Body Composition Data Acquisition Techniques in Public Health

10.5772/37031 ◽  
2012 ◽  
Author(s):  
Steven Provyn ◽  
Aldo Scafoglieri ◽  
Jonathan Tresignie ◽  
Cline Lum ◽  
Jan Pieter ◽  
...  
Keyword(s):  
Public Health ◽  
Body Composition ◽  
Data Acquisition ◽  
Critical Appraisal ◽  
Composition Data

scholarly journals Wireless Sensor Networks Composed of Standard Microcomputers and Smartphones for Applications in Structural Health Monitoring

Sensors ◽  
2019 ◽  
Vol 19 (9) ◽  
pp. 2070 ◽  
Author(s):  
Guido Morgenthal ◽  
Jan Frederick Eick ◽  
Sebastian Rau ◽  
Jakob Taraben
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Structural Health Monitoring ◽  
Data Acquisition ◽  
Health Monitoring ◽  
Modal Identification ◽  
System Level ◽  
Wireless Sensor ◽  
Raspberry Pi ◽  
Structural Health

Wireless sensor networks have attracted great attention for applications in structural health monitoring due to their ease of use, flexibility of deployment, and cost-effectiveness. This paper presents a software framework for WiFi-based wireless sensor networks composed of low-cost mass market single-board computers. A number of specific system-level software components were developed to enable robust data acquisition, data processing, sensor network communication, and timing with a focus on structural health monitoring (SHM) applications. The framework was validated on Raspberry Pi computers, and its performance was studied in detail. The paper presents several characteristics of the measurement quality such as sampling accuracy and time synchronization and discusses the specific limitations of the system. The implementation includes a complementary smartphone application that is utilized for data acquisition, visualization, and analysis. A prototypical implementation further demonstrates the feasibility of integrating smartphones as data acquisition nodes into the network, utilizing their internal sensors. The measurement system was employed in several monitoring campaigns, three of which are documented in detail. The suitability of the system is evaluated based on comparisons of target quantities with reference measurements. The results indicate that the presented system can robustly achieve a measurement performance commensurate with that required in many typical SHM tasks such as modal identification. As such, it represents a cost-effective alternative to more traditional monitoring solutions.

Regional skeletal muscle measurement: evaluation of new dual-energy X-ray absorptiometry model

1999 ◽  
Vol 87 (3) ◽  
pp. 1163-1171 ◽  
Author(s):  
Wei Wang ◽  
Zimian Wang ◽  
Myles S. Faith ◽  
Donald Kotler ◽  
Rick Shih ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Mass Measurement ◽  
Dual Energy ◽  
System Level ◽  
Axial Tomography ◽  
X Ray ◽  
Computerized Axial Tomography ◽  
Tissue System ◽  
Immunodeficiency Syndrome

Although there is growing interest in studying muscle distribution, regional skeletal muscle (SM) mass measurement methods remain limited. The aim of the present study was to develop a new dual-energy X-ray absorptiometry (DEXA) model for estimating regional adipose tissue-free skeletal muscle mass (AT-free SM). Relationships were derived from Reference Man data between tissue-system- level components (i.e., AT-free SM, AT, skeleton, and skin) and molecular-level components including fat-free soft tissue, fat, and bone mineral. The proposed DEXA-SM model was evaluated by multiscan computerized axial tomography (CT). Twenty-seven male subjects [age, 36 ± 12 (SD) yr; body mass, 73.2 ± 12.4 kg; 20 were healthy, and 7 had acquired immunodeficiency syndrome] completed DEXA and CT studies. Identical landmarks for DEXA and CT measurements were selected in three regions, including calves, thighs, and forearms. There was a strong correlation for AT-free SM estimates between the new DEXA and CT methods (e.g., sum of three regions, r= 0.86, P < 0.001). Regional AT-free SM measured in the 27 subjects by DEXA and CT, respectively, were 3.44 ± 0.60 and 3.47 ± 0.55 kg (difference 0.9%, P > 0.05) for calves, 10.49 ± 1.77 and 10.05 ± 1.79 kg (difference 4.4%, P < 0.05) for thighs, 1.36 ± 0.49 and 1.20 ± 0.41 kg (difference 13.3%, P < 0.01) for forearms, and 15.29 ± 2.33 and 14.72 ± 2.33 kg (difference 3.9%, P < 0.05) for the sum all three regions. Although the suggested DEXA-SM model needs minor refinements, this is a promising in vivo approach for measurement of regional SM, because DEXA is widely available, relatively inexpensive, and radiation exposure is low.

Sign in / Sign up

Export Citation Format

Share Document