An experimental study on individual walking speed during ship evacuation with the combined effect of heeling and trim

2018 ◽  
Vol 166 ◽  
pp. 396-403 ◽  
Author(s):  
Jinlu Sun ◽  
Yafei Guo ◽  
Changhai Li ◽  
Siuming Lo ◽  
Shouxiang Lu
Keyword(s):  
Experimental Study ◽  
Walking Speed ◽  
Combined Effect

scholarly journals “To Clean or Not to Clean?” Reducing Daily Routine Hotel Room Cleaning by Letting Tourists Answer This Question for Themselves

2019 ◽  
Vol 60 (1) ◽  
pp. 220-229 ◽  
Author(s):  
Ljubica Knezevic Cvelbar ◽  
Bettina Grün ◽  
Sara Dolnicar
Keyword(s):  
Experimental Study ◽  
Combined Effect ◽  
Daily Routine ◽  
Consumer Decisions ◽  
Opting Out ◽  
Hotel Room ◽  
Powerful Approach ◽  
Quasi Experimental ◽  
Routine Cleaning

Changing default settings has proven to be a powerful approach to influencing consumer decisions without denying consumers the possibility of choosing freely. This is only the second study investigating the effectiveness of defaults in tourism, and the first testing also the combined effect of default changes and pro-environmental appeals in the context of changing room cleaning defaults in hotels from automatic daily cleaning (with the choice of opting out) to no daily routine cleaning (with the choice of opt-in and requesting a free room clean every day). Results from a quasi-experimental study conducted in a three-star city hotel suggest that the change in defaults significantly reduced room cleaning, with only 32% of room cleans requested on average. Adding a pro-environmental appeal to the change in defaults did not further reduce room cleaning overall, but has an effect on certain segments of hotel guests.

Experimental Study on Anti-Friction Property of Groove Textured Surface with Different Direction Angles

2013 ◽  
Vol 281 ◽  
pp. 404-408 ◽  
Author(s):  
Chen Bo Ma ◽  
Jian Jun Sun ◽  
Hua Zhu ◽  
Jian Quan Li ◽  
Fei Zhou
Keyword(s):  
Experimental Study ◽  
Friction Coefficient ◽  
Smooth Surface ◽  
Combined Effect ◽  
Resistance Force ◽  
Textured Surface ◽  
Friction Property ◽  
Friction Effect ◽  
Direction Angle ◽  
Design And Application

To investigate the influence of different direction angles on groove textured surface, tribology experiments for smooth surface and groove textured surface with angles of 0°, 30°, 45°, 60°, 90° were carried on under various loads and velocities. The results show that, the friction coefficient decreases first and then increases with the increase of groove direction angle. And the optimal anti-friction effect could be obtained when the groove textured surface with angle of 60°, because of its superior combined effect of resistance force and liquid squeeze force, which are introduced by the groove. The findings could provide a theoretical guide for the design and application of groove textured surface.

scholarly journals Experimental Study of Pool Effect of Shear, Flexure and Torsion on SFRC Beams

2020 ◽  
Vol 9 (6) ◽  
pp. 233-236
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Aspect Ratio ◽  
Steel Fiber ◽  
Concrete Beams ◽  
Fiber Reinforced Concrete ◽  
Combined Effect ◽  
Bending Stress ◽  
Steel Fiber Reinforced Concrete ◽  
Specific Fraction

Flexural, torsional, compressive and shear behavior of Steel Fiber Reinforced Concrete (SFRC) is already studied individually but none has studied the performance of SFRC beams under a combined effect of more than one state i.e. tension, flexure, torsion, compression and shear in general by now. In this study M20 grade of concrete beams under composite behavior of flexure, shear and torsion with different compositions of fibers mix were investigated. The dimensions of specimen beams was 100 mm x 100 mm x 500 mm and straight cylindrical fibers of length 0.28 mm and aspect ratio 100 were mixed. A total of 48 specimen were casted and tested such that for every percentage of fiber and each torsion value three beams were tested. Hence there are four torsion values 0, 61.75, 119.41 and 176.53 N-m are applied (4x3x4=48) It was found during study that ultimate bending stress and deflection increases due to increase in torsion where as the ductility reduced with the torsion enhancement for a specific fraction of fiber content.

scholarly journals Estudio De Caso: Comportamiento Mecanico Del Hierro Fundido Gris Perlitico Sometido Al Fenómeno De Termofluencia

2017 ◽  
Vol 13 (33) ◽  
pp. 74
Author(s):  
Jorge Isaías Caicedo Reyes ◽  
Javier Enrique Orna Chávez ◽  
Eduardo Segundo Hernández Dávila
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Cast Iron ◽  
Gray Cast Iron ◽  
Combined Effect ◽  
Gray Cast ◽  
Metallographic Study ◽  
Experimental Logic ◽  
Considerable Degradation ◽  
Estudio De Caso

The application of foundries has been extended in recent times due to the advancement in casting and cooling techniques. This leads to a better control of their mechanical properties by allowing them to replace steel in multiple applications. In this work, the results of an experimental study that seeks to obtain information on the combined effect of tension (1224 Kgf / cm2) and temperature (500, 550, 600 and 650 ° C) in the pearlitic gray cast iron was addressed. The methodology used is analytical, qualitative, quantitative, deductive, and experimental logic. The tests were carried out according to the ASTM E139 standard using flat specimens of reduced section sized according to ISO 6892: 1998 (E). From the specimens tested, specimens were extracted from the fractured area to perform metallographic and microhardness tests. The results showed that for the temperatures of 500, 550 and 600°C, no complete curves characteristic of the creep phenomenon were obtained, while at 650°C, the curve obtained was complete. Regarding the metallographic study, it did not present a considerable degradation at the different study temperatures despite reaching the fracture in all cases. From the study of the hardness, a similar behavior was obtained in the curves for all the specimens as measurements were made moving away from the fracture.

scholarly journals “To clean or not to clean?” Reducing daily routine hotel room cleaning by letting tourists answer this question for themselves

2020 ◽  
Author(s):  
Ljubica Knezevic Cvelbar ◽  
Bettina Grün ◽  
Sara Dolnicar
Keyword(s):  
Experimental Study ◽  
Combined Effect ◽  
Daily Routine ◽  
Consumer Decisions ◽  
Opting Out ◽  
Hotel Room ◽  
Powerful Approach ◽  
Quasi Experimental ◽  
Routine Cleaning

Changing default settings has proven to be a powerful approach to influencing consumer decisions without denying consumers the possibility of choosing freely. This is only the second study investigating the effectiveness of defaults in tourism, and the first testing also the combined effect of default changes and pro-environmental appeals in the context of changing room cleaning defaults in hotels from automatic daily cleaning (with the choice of opting out) to no daily routine cleaning (with the choice of opt-in and requesting a free room clean every day). Results from a quasi-experimental study conducted in a three-star city hotel suggest that the change in defaults significantly reduced room cleaning, with only 32% of room cleans requested on average. Adding a pro-environmental appeal to the change in defaults did not further reduce room cleaning overall, but has an effect on certain segments of hotel guests.

Sign in / Sign up

Export Citation Format

Share Document