Syou-Ching Lai, Yuh-Shin Lin, Yi-Hung Lin and Hua-Wei Huang
– This paper aims to examine the relation between the cost of debt and the adoption of eXtensible Business Reporting Language (XBRL).
Abstract
Purpose
This paper aims to examine the relation between the cost of debt and the adoption of eXtensible Business Reporting Language (XBRL).
Design/methodology/approach
The financial data are obtained from the Compustat database. Regression analysis is used to examine the research hypotheses.
Findings
The authors find that both voluntary and mandatory adoption of XBRL lead to a lower cost of debt for firms, with weak evidence that this reduction is greater for the former than the latter.
Research limitations/implications
The findings support the policy of the USA Securities and Exchange Commission (SEC), and thus this paper recommends that adoption of XBRL should be mandatory for all public firms.
Practical implications
The findings encourage top managers to develop their firms’ XBRL systems.
Originality/value
The results support the SEC’s policy of mandatory XBRL adoption, as it can lead to greater financial reporting transparency and mitigate information asymmetry between management and bondholders.
Details
Keywords
Jeng-Haur Horng, Shin-Yuh Chern, Chi-Lin Li and Yang-Yuan Chen
This paper aims to investigate the temperature and wear properties of vertical ball screws and to discuss the surface design of ball screws in industrial applications.
Abstract
Purpose
This paper aims to investigate the temperature and wear properties of vertical ball screws and to discuss the surface design of ball screws in industrial applications.
Design/methodology/approach
The energy equation of the screw surface considering the frictional heat was established to verify the surface temperature of the ball screw. X-ray diffraction was used to examine the micro-contact temperature between the ball and screw. Debris size and density were examined to investigate wear properties of ball screws and to study the relationship of wear debris and temperature.
Findings
First, the main energy source for the surface temperature of high speed vertical ball screws is derived from friction force between ball and screw. Second, the temperature rise between the ball and screw has great relevance with wear debris concentration. Third, the surface temperature of the screw is higher than between the nut and ball for high speed vertical ball screws due to high convection heat transfer. The contact temperature of the nut near the flange is smaller than that of the nut away from the flange end due to the high contact load and thermal conduction. Finally, correlation of particle size and surface roughness value for vertical ball screws was established, and its effects on contact temperature were studied. The theoretical analysis and experiments will help to characterize the design and manufacture of vertical ball screws.
Originality/value
The surface temperature and micro-contact temperature analytical model were established to study the ball screw design. Based on the surface-particle micro-contact temperature balance, the optimal range of surface roughness was designed for vertical ball screws, considering the wear debris and micro-contact temperature.