Unsafe Act as the Risk Factors of Accidents in Using Mill in Roof Tile Industry at Pejaten Village Tabanan Regency

The use of mill and hand press machines had been increased the productivity ofroof tile home industry at Pejaten Village Tabanan Regency. But the increased ofproductivity followed by increased of working accidents. Many effort had been done toreduced the accident such as equipped the mill machine with machine's cover, footprotective devices, and training to the new employees; but, the accident still happen.Although the incident of accident was lower but the disability was severed such as loss ofhand, loss oh finger, or other physical defects of the body part. Such physical defectscaused a serious effect on worker's daily lives and social activities. To find out the unsafeacts as the risk factors of accident, a retrospective study was done using interview and onthe spot observation to the milling process. The results are found: there are three riskfactors contributed to the accidents, namely: the human factor, the tools and theenvironment. The human factor contributed highest one for the accident. From humanfactors it was found that there are many unsafe acts, such as: careless, going up to theupper inlet of mill to push mixing raw material with foot or hand, moving the millwithout turn off the machine, cleaning the mill without turn off the mill, taking out thestone which trapped the rollers using hand, operating the machine without guarding,working with tired condition, working without knowing the operation procedure, withouttraining, improver lighting, working without personal protective devices, etc. The highestincidents come from pushing the raw materials on inlet of mill in order to speed-up themilling process. To solve the problems some actions must be done such as providing themill with the appropriate equipments; by doing so, the operator can push the materialsafely to speed-up the mill process, turn off the machine before cleaning, appropriatetraining before operating of mill, using the personal protective devices, and doing goodhouse keeping and inspection, regularly

On the extension of the Bethe-Weizsacker mass formula to light nuclei

Some general features of the Bethe-Weizsacker mass formula recently extended to light nuclei have been explored. Though this formula improves fits to the properties of light nuclei and it does seem to work well in delineating the positions of all old and new magic numbers found in that region, yet it is not well tuned for predicting finer details. The mass predictions have also been found to be less accurate compared to those by the macroscopic-microscopic calculations. It is concluded that such semi-empirical mass formulae can not be a substitute for more fundamental mass formulae having its origin based upon the basic nucleon-nucleon effective interaction.Comment: 3 page

Nonequilibrium Fock space for the electron transport problem

Based on the formalism of thermo field dynamics we propose a concept of nonequilibrium Fock space and nonequilibrium quasiparticles for quantum many-body system in nonequilibrium steady state. We develop a general theory as well as demonstrate the utility of the approach on the example of electron transport through the interacting region. The proposed approach is compatible with advanced methods of electronic structure calculations such as coupled cluster theory and configuration interaction

Forward particle production in proton-nucleus collisions at next-to-leading order

We consider the next-to-leading order (NLO) calculation of single inclusive particle production at forward rapidities in proton-nucleus collisions and in the framework of the Color Glass Condensate (CGC). We focus on the quark channel and the corrections associated with the impact factor. In the first step of the evolution the kinematics of the emitted gluon is kept exactly (and not in the eikonal approximation), but such a treatment which includes NLO corrections is not explicitly separated from the high energy evolution. Thus, in this newly established "factorization scheme", there is no "rapidity subtraction". The latter suffers from fine tuning issues and eventually leads to an unphysical (negative) cross section. On the contrary, our reorganization of the perturbation theory leads by definition to a well-defined cross section and the numerical evaluation of the NLO correction is shown to have the correct size.Comment: 7 pages, 5 figures, based on talk given at QCD@Work, 25-28 June 2018, Matera, Ital

Hypothesis on the Nature of Time

We present numerical evidence that fictitious diffusing particles in the causal dynamical triangulation (CDT) approach to quantum gravity exceed the speed of light on small distance scales. We argue this superluminal behaviour is responsible for the appearance of dimensional reduction in the spectral dimension. By axiomatically enforcing a scale invariant speed of light we show that time must dilate as a function of relative scale, just as it does as a function of relative velocity. By calculating the Hausdorff dimension of CDT diffusion paths we present a seemingly equivalent dual description in terms of a scale dependent Wick rotation of the metric. Such a modification to the nature of time may also have relevance for other approaches to quantum gravity.Comment: 15 pages, 4 figures. Conforms with version to be published in PRD. Clarifications and references adde

Flutter of Darrieus wind turbine blades: Correlation of theory and experiment

Flutter analysis of two wind turbines was correlated with experimental data for flutter of Darrieus blades