Analytical volume model for optimized spatial radar bat detection in onshore wind parks

This study estimated the induced effects of LNG, mega PV (photovoltaic), small PV, onshore wind and offshore wind power, which will be used as major power sources under the Korea’s energy transition policy. The 2015 Input–Output Statistics of Bank of Korea were used to reflect Korea’s economic structure. The MCI (manufacture, construction and installation) and O&M (operation and maintenance) of each power source would have different effects, so in the analysis the MCI and O&M of each power source were distinguished. According to estimation results, the induced-effect coefficients of the MCI are greater than those of the O&M in every power source. The induced production effect coefficient of the MCI is decreased in the order of mega PV > small PV > LNG power > offshore wind > onshore wind. The induced production effect coefficient of the O&M is decreased in the order of mega PV > small PV > onshore wind > offshore wind > LNG thermal. The induced employment coefficient of the MCI is decreased in the order of LNG thermal > mega PV > small PV > onshore wind > offshore wind. PV power and wind power have bigger induced effects and bring economic effects in Korean economy. The carbon neutrality and energy transition policies implemented by Korea have a certain level of induced effects and offset the burden of transition costs even if existing power sources are replaced with environmentally friendly power sources.

Download Full-text

Real color volume model of cadaver for learning cardiac computed tomographs and echocardiographs

Surgical and Radiologic Anatomy ◽

10.1007/s00276-021-02713-w ◽

2021 ◽

Author(s):

Beom Sun Chung ◽

Min Suk Chung

Keyword(s):

Volume Model

Download Full-text

Real Color Model of a Cadaver for Deep Brain Stimulation of the Subthalamic Nucleus

Applied Sciences ◽

10.3390/app11114999 ◽

2021 ◽

Vol 11 (11) ◽

pp. 4999

Author(s):

Chung-Yoh Kim ◽

Jin-Seo Park ◽

Beom-Sun Chung

Keyword(s):

Deep Brain Stimulation ◽

Subthalamic Nucleus ◽

Brain Stimulation ◽

Magnetic Resonance Images ◽

Target Point ◽

Anatomical Structures ◽

Volume Model ◽

Segmented Images ◽

Volume Models ◽

Deep Brain

When performing deep brain stimulation (DBS) of the subthalamic nucleus, practitioners should interpret the magnetic resonance images (MRI) correctly so they can place the DBS electrode accurately at the target without damaging the other structures. The aim of this study is to provide a real color volume model of a cadaver head that would help medical students and practitioners to better understand the sectional anatomy of DBS surgery. Sectioned images of a cadaver head were reconstructed into a real color volume model with a voxel size of 0.5 mm × 0.5 mm × 0.5 mm. According to preoperative MRIs and postoperative computed tomographys (CT) of 31 patients, a virtual DBS electrode was rendered on the volume model of a cadaver. The volume model was sectioned at the classical and oblique planes to produce real color images. In addition, segmented images of a cadaver head were formed into volume models. On the classical and oblique planes, the anatomical structures around the course of the DBS electrode were identified. The entry point, waypoint, target point, and nearby structures where the DBS electrode could be misplaced were also elucidated. The oblique planes could be understood concretely by comparing the volume model of the sectioned images with that of the segmented images. The real color and high resolution of the volume model enabled observations of minute structures even on the oblique planes. The volume models can be downloaded by users to be correlated with other patients’ data for grasping the anatomical orientation.

Download Full-text

Ontology for maintenance of onshore wind turbines

Forschung im Ingenieurwesen ◽

10.1007/s10010-021-00466-x ◽

2021 ◽

Author(s):

Bernhard Strack ◽

Martin Lenart ◽

Jana Frank ◽

Nina Kramer

Keyword(s):

Wind Turbines ◽

Onshore Wind

Download Full-text

The impact of onshore wind power projects on ecological corridors and landscape connectivity in Shanxi, China

Journal of Cleaner Production ◽

10.1016/j.jclepro.2020.120075 ◽

2020 ◽

Vol 254 ◽

pp. 120075 ◽

Cited By ~ 3

Author(s):

Xinya Guo ◽

Xingqi Zhang ◽

Shixun Du ◽

Chao Li ◽

Yim Ling Siu ◽

...

Keyword(s):

Wind Power ◽

Landscape Connectivity ◽

Onshore Wind ◽

Ecological Corridors ◽

The Impact

Download Full-text

Identification and selection of potential sites for onshore wind farms development in Region of Murcia, Spain

Energy ◽

10.1016/j.energy.2014.06.024 ◽

2014 ◽

Vol 73 ◽

pp. 311-324 ◽

Cited By ~ 43

Author(s):

J.M. Sánchez-Lozano ◽

M.S. García-Cascales ◽

M.T. Lamata

Keyword(s):

Wind Farms ◽

Onshore Wind ◽

Selection Of

Download Full-text

Effect of an Improved Yasutomi Pressure-Viscosity Relationship on the Elastohydrodynamic Line Contact Problem

ISRN Tribology ◽

10.5402/2013/149451 ◽

2013 ◽

Vol 2013 ◽

pp. 1-7

Author(s):

Vincenzo Petrone ◽

Adolfo Senatore ◽

Vincenzo D'Agostino

Keyword(s):

High Pressure ◽

Film Thickness ◽

Free Volume ◽

Experimental Studies ◽

Line Contact ◽

Volume Model ◽

Free Volume Model ◽

Pressure Area ◽

New Formulation ◽

Lubricant Viscosity

This paper presents the application of an improved Yasutomi correlation for lubricant viscosity at high pressure in a Newtonian elastohydrodynamic line contact simulation. According to recent experimental studies using high pressure viscometers, the Yasutomi pressure-viscosity relationship derived from the free-volume model closely represents the real lubricant piezoviscous behavior for the high pressure typically encountered in elastohydrodynamic applications. However, the original Yasutomi correlation suffers from the appearance of a zero in the function describing the pressure dependence of the relative free volume thermal expansivity. In order to overcome this drawback, a new formulation of the Yasutomi relation was recently developed by Bair et al. This new function removes these concerns and provides improved precision without the need for an equation of state. Numerical simulations have been performed using the improved Yasutomi model to predict the lubricant pressure-viscosity, the pressure distribution, and the film thickness behavior in a Newtonian EHL simulation of a squalane-lubricated line contact. This work also shows that this model yields a higher viscosity at the low-pressure area, which results in a larger central film thickness compared with the previous piezoviscous relations.

Download Full-text