Economic Analysis on Attributes of Workers and Method to Take Annual Paid Vacation
This paper focuses on what type of laborers chooses which of the six types of uses of paid vacations. In this paper, we conduct a multinomial logistic regression analysis with the “six types of uses of paid vacations” which are “share method”, “progressive method”, “regressive method”, “self-pay method (advance)”, “self-pay method (arrears)”, and “self-pay method (work at home)” as object variables. As a result, many of the independent variables did not influence which type was chosen, but interesting variables “information is not shared” and “those around me take paid vacation” were influential, revealing that different types of choices are made depending on how participants work.
Verification of Hypothesis of “Six Patterns of Paid Vacation Use”: An Exploration of Six Patterns of Paid Vacation Usage and Number of Days Taken
In this study a survey using questionnaires was conducted to understand the actual condition of the relationship between methods for taking paid vacation and its usage rate; to focus on verifying the relationship quantitatively by empirical analysis; and to present a plan to promote paid vacation usage. The simple tabulation did not reveal a distinct difference in the number of days taken as paid vacation among the usage methods; however, by making the other conditions constant, the number of days taken as paid vacation by those adopting a share method was significantly high. In other words, by recommending the share method at a workplace, it is possible that the paid vacation usage condition improves considerably. In order for this method to operate effectively, the paper proposed that “efforts to utilize human resources” is necessary so that personnel who can replace the work of employees taking paid vacation are prepared.
Experimental study on ground vibration of blasting the boulder with tandem shaped charging warhead
Hazardous effects of blasting the boulder with the new breaking-blasting equipment-tandem shaped charging warhead are mainly air shock wave, seismic wave and blast slung shot. Blast-induced ground vibration is one of the inevitable effects and may cause substantial damage to nearby structures. Started from the formation process and mechanism of ground vibration to study the seismic wave, the research attained curve of vibration velocity of monitoring points by TC-4850 and carried out differential and fast Fourier transform analysis of the curve. And the results concluded that blasting vibration with tandem shaped charging warhead mainly comes from prime charge; the attenuation law can be predicted by Sadev’s Formula. Explosion vibration frequency range is 20-150 Hz, while with the increase of distance from the blasting center, blasting vibration intensity attenuates rapidly, vibration duration increases and vibration frequency gradually reduces. Compared with general rock blasting, its attenuation rate of blasting vibration is faster with higher frequency and smaller impact on buildings, but the harm effects should not be ignored for the special application environment.