CPM Method Research Articles

Perencanaan dan Pengendalian Proyek dengan Metode Pert - CPM Studi Kasus : Fly Over Ahmad Yani – Karawang

The efficiency and effectivity is not a new guide in this global era. As a professional and innovative company, like consultant construction company that always makes customer satisfy, has a good achievement and reputation. There fore, efficiency and affectivity are necessary needed in a company. Article gives some inputs how to manage time become more effective and efficient in finishing project with CPM method. With using CPM method in “fly over project Ahmad Yani-Karawang”, is figured out the optimal time to finish this project which is 184 days.Keywords:

Use of fuzzy numbers in project risk (criticality) assessment

We put forward a fuzzy way of measuring the criticality of project activities and of the whole project. In the proposed approach both the decision maker attitude and the project network structure are taken into account. The criticality measure obtained may serve as a measure of risk or of the supervision effort needed and can help in making the decision whether to accept or to reject the project. Its numerical implementation is as difficult as that of the classical CPM method.

The effect of hydrogen dilution on glow discharge a-SiGe:H alloys

Amorphous SiGe:H alloy is the key material for highly efficient and stable a-Si-based tandem solar cells. We have studied the effect of H 2 dilution (0% < H 2 < 95%) of the source gas mixture (SiH 4 + GeH 4) on the glow discharge a-Si 1− x Ge x :H alloys with x varying from 0 to 0.55. The dependence of composition, deposition rate, IR absorption spectra and optical properties on hydrogen dilution are reported and analyzed. The CPM method was used to obtain sub-band-gap absorption spectra. The a-SiGe:H alloys show high photosensitivity, a low Urbach energy (<60 meV) and a low density of states in the gap (<3×10 16 cm 3) for as low as 1.3 eV band gap material. Hydrogen dilution was found to improve the photoelectrical properties; it minimizes the silicon dihybride bonding and lowers the incorporation of Ge into the film.