A LOGISTIC REGRESSION MODEL TO PREDICT INCIDENT SEVERITY USING THE HUMAN FACTORS ANALYSIS AND CLASSIFICATION SYSTEM

The Human Factors Analysis and Classification System (HFACS) is used to help identify causal factors that lead to human error. The framework has been used in a variety of industries to identify leading contributing factors of unsafe events, such as accidents, incidents and near misses. While traditional application of the HFACS framework to safety outcomes has allowed evaluators to identify leading causal issues based on frequency, little has been done to gain a more comprehensive view of the system\u27s total risk. This work utilizes the concept of event severity along with the HFACS framework to help better identify target areas for intervention among unsafe events in wind turbine maintenance. The objective of this work was to determine if there are any relationships between the certain HFACS causal factors and an incident\u27s severity. The analysis was based on 405 cases which were coded for contributing factors using HFACS and were rated for actual and potential severity using a 10-point severity scale. Models for predicting potential and actual severity were generated using logistic regression. These models were then validated using actual data. Although the findings were not significant, it was determined that decision errors and preconditions to unsafe acts: technological environment were major contributors to events with high potential severity. One limitation of this work was the limited availability of complete data on which to conduct the analysis. So, while the analysis produced non-significance, it is anticipated that as more data becomes available, the models will yield more concrete findings. Regardless, understanding the relationships among incident causal factors and outcomes may shed light on those causal factors which have the potential to lead to catastrophic events and those which may lead to less severe events

“STRUCTURALANDɳBSTUDY OF In3+SUBSTITUTED YTTRIUM IRONGARNET”

Objective: To prepare and study the In3+substituted yttrium iron garnet with reference to structural parameters and IR spectra Materials and Methods: In3+ was added in to yttrium iron garnet (YIG) with a nominal composition of Y3InxFe5-xO12 with x= 0.0, 0.2 and 0.6. The Samples were prepared by a solid-state sintering method. The samples were characterized by X-ray diffraction technique. The X-ray diffraction studies of compositions revealed the formation of single phase cubic structure with lattice constant ranging from 12.37Å to 12.44 Å. The FTIR spectra of typical samples are taken in the range of 500-4000cm-1. Results:IR spectra show typical absorption bands indicating the garnet nature of samples. Conclusion: Magneton number 'ɳB'decreases with increasing In3+ content x

“STUDY OF STRUCTURAL PARAMETERS AND CATION DISTRIBUTION OF CU2+ IONS SUBSTITUTED NICKEL FERRITES”

 Objective: To prepare and study the Cu2+ion substituted nickel ferrites with reference to structural parameters and cation distribution Materials and Methods: The samples of Cu2+ substituted nickel ferrites having the composition formula Ni1-XCuXFe2O4 (x = 0.0, 0.4, 0.8.) were prepared by solid state reaction technique using AR grade oxides. The formation of mono phase cubic spinel structure of all the samples under investigation have been carried out using XRD technique at room temperature. X-ray diffraction data were used to calculate structural parameters and X-ray intensity ratios were calculated for selected planes (220), (400), (440) and compared with the observed intensity ratios in order to obtain cation distribution. Results: The results of the cation distribution indicate that Cu2+ and Fe3+ occupy both sites whereas Ni2+ occupy octahedral B site. In this work we report our results on structural parameters and cation distribution of mixed Ni-Cu spinel ferrites. Conclusion: The structural parameters of nickel-copper system increases with Copper ions

CONSEQUENCE OF CALENDULA OIL ON THE IN- VITRO PERCUTANEOUS ABSORPTION OF DICLOFENAC SODIUM

Terpenes are widely used as penetration enhancers in transdermal drug delivery system. Calendula oil also contains different terpenes.  The enhancing effect of calendula oil on the in- vitro percutaneous absorption of diclofenac sodium (DFS) from carbopol gels containing propylene glycol was investigated. Permeation experiments were performed on artificial skin membrane. The permeation effect of calendula oil on DFS is compared with geraniol and menthol (mild accelerants) . The enhancing effect of calendula oil was found to be more as compared with geraniol and menthol. However, although the addition of calendula oil increased DFS flux; diffusional lag times were longer than for the control ge

FEASIBILITY STUDY OF ELECTROMAGNETIC AIRCRAFT LAUNCHING SYSTEM (EMALS) BY USING ADVANCE ANALYSIS TOOLS

The purpose of this paper is to use the Lorentz force to generate repulsion forces to drive aircraft in a short runway. Other aircraft launching systems like steam catapult, electromagnetic linear motor are going to be less used due to their drawbacks. Lorentz force is used to generate the repulsion in between the rail track which forces the armature in forward direction. For this application, the objective is to pull the large load, such as the aircraft, in a linear motion at a sufficiently high speed, where it can take off easily from a short runway. The approach of electromagnetic aircraft launch system is to the significance for safety and efficiency of aircraft-carrier system. Simulation is carried out by using the analysis software LSDyna

BEHAVIOUR OF INLINE KNOCKOUT MACHINE OPERATING UNDER VIBRATION

Inline knockout machine is designed to separate sand and castings from mold box. Vibration is controlled by unbalanced weights provided on each side of spindle. Failure of the components such as vibrating box, vibrating frame, and damper takes place after certain number of cycles. Modal analysis and harmonic analysis have been carried out based on dynamic analysis technology

An endemic and Critically Endangered species, <i>Gymnema khandalense</i> Santapau (Apocynaceae: Asclepiadoideae) - a new record to Goa State, India

Gymnema khandalense Santapau (Apocynaceae - Asclepiadoideae), an endemic and critically endangered species, is reported here for the first time from Goa State. A detailed description, phenology, distribution and ecology along with a photo plate are provided for its easy identification

Feasibility Study Of Electromagnetic Aircraft Launching System (Emals) By Using Advance Analysis Tools

The purpose of this paper is to use the Lorentz force to generate repulsion forces to drive aircraft in a short runway. Other aircraft launching systems like steam catapult, electromagnetic linear motor are going to be less used due to their drawbacks. Lorentz force is used to generate the repulsion in between the rail track which forces the armature in forward direction. For this application, the objective is to pull the large load, such as the aircraft, in a linear motion at a sufficiently high speed, where it can take off easily from a short runway. The approach of electromagnetic aircraft launch system is to the significance for safety and efficiency of aircraft-carrier system. Simulation is carried out by using the analysis software LSDyna