Leadership Support in Fire Risk Control in Coal Mill Area in South Sulawesi, Indonesia

The major significant factor for reducing the risk of fire incidence is leadership support. The objective of this study is to analyze leadership support and their roles in fire control in Coal Mill area in PT.X South Sulawesi. This research used a quantitative design with descriptive approach. Research sample consists of 17 respondents from 14 leaders in the production department and 3 leaders from Occupational and safety department in PT. X South Sulawesi. The results showed that leadership support plays important roles in fire control. Majority of leaders in PT. X stated that they are responsible for controlling fire risk in Coal Mill area and only 52.9% are actively participated in composing and drafting regulation and policy on fire risk control. The other findings indicated that leaders implement the function of auditing and supervising fire control in Coal Mill area. In fact, however, 58.8% said that fire reduction has never become an agenda in their meeting. Another interesting point is that the leaders also play a role in reward and punishment mechanism. Furthermore, 88.2% of the leaders suggested giving reward and 94.1% supported to give punishment to workers in term of a fire accident in Coal Mill area. Leadership support plays important roles to decrease fire risk accident in Coal Mill area. Responsiveness of leaders determines the willingness in responding fire control to support zero accident in a company

Fractional Order Study of the Impact of a Photo Thermal Wave on a Semiconducting Medium under Magnetic Field and Thermoplastic Theories

The study aims to estimate the extent to which the reflection wave is affected by the initial stress, magnetic field, and fractional parameter within a semiconductor photothermal diffusion medium when taking into account the Classical (CT) theory and the dual-phase-lag (DPL) theory. Its problem is defined in examining the generalized framework concerning plasma, thermoelastic waves under the thermomechanical responding of reflecting the photothermal diffusion for the semiconductor constituent. It applies the Maxwells equations while considering the absence of the medium of infinite conducting and displacement current. Moreover, it applies the boundary settings for the Maxwells and mechanical stress, diffusion, chemical reaction, as well as temperature gradient on the interface next to the vacuum. It obtains analytically and displays graphically the ratios of the reflection coefficient as tasks of the angle of incidence, diffusion, initial stress, magnetic field, semiconducting, and photothermal. It compares the CT to the DPL theory. It also compares its findings to the results of the literature. The results of the paper include generalizing the photothermal semiconductor medium and deducing to a special case when neglecting the novel parameters. When neglecting the magnetic field, fractional parameter, and initial stress, the findings of the current study deduce to the findings of Lotfy et al. (2020) as a special case of study