Petra Christian University

About: Petra Christian University is a education organization based out in Surabaya, Indonesia. It is known for research contribution in the topics: Population & Customer satisfaction. The organization has 2412 authors who have published 2893 publications receiving 10429 citations.

A novel Multiple Objective Symbiotic Organisms Search (MOSOS) for time-cost-labor utilization tradeoff problem

Abstract: This research presents a novel multiple optimization algorithm MOSOS.MOSOS is applied to solve time-cost-utilization work shift tradeoff problem.The model performance is demonstrated in the experimental results.Statistical test found MOSOS to provide better solutions compared to other methods. Multiple work shifts are commonly utilized in construction projects to meet project requirements. Nevertheless, evening and night shifts raise the risk of adverse events and thus must be used to the minimum extent feasible. Tradeoff optimization among project duration (time), project cost, and the utilization of evening and night work shifts while maintaining with all job logic and resource availability constraints is necessary to enhance overall construction project success. In this study, a novel approach called "Multiple Objective Symbiotic Organisms Search" (MOSOS) to solve multiple work shifts problem is introduced. The MOSOS algorithm is new meta-heuristic based multi-objective optimization techniques inspired by the symbiotic interaction strategies that organisms use to survive in the ecosystem. A numerical case study of construction projects were studied and the performance of MOSOS is evaluated in comparison with other widely used algorithms which includes non-dominated sorting genetic algorithm II (NSGA-II), the multiple objective particle swarm optimization (MOPSO), the multiple objective differential evolution (MODE), and the multiple objective artificial bee colony (MOABC). The numerical results demonstrate MOSOS approach is a powerful search and optimization technique in finding optimization of work shift schedules that is it can assist project managers in selecting appropriate plan for project.

Good corporate governance dan penerapannya di indonesia

Abstract: Recent experience indicate that it isn`t sufficient for management just to rely on how efficient is the process of managing. It needs a new instrument, Good Cooperate Governance (GCG), to prove that the management is going well. This concept emphasize on two important things, that is : first, the right of shareholder to be provided of right and just on time information, and second, the obligation of company to disclose accurately, just on time, and transparently all information of company`s performance, shareholders, and stakeholders. Various studies by national and international researchers proved the lack of understanding the importance and strategic implication of applying GCG principles by Indonesian entrepreneur. Besides, organization culture also influencing GCG application in Indonesia. Abstract in Bahasa Indonesia : Perkembangan terbaru membuktikan bahwa manajemen tidak cukup hanya memastikan bahwa proses pengelolaan manajemen berjalan dengan efisien. Diperlukan instrumen baru, Good Corporate Governance (GCG) untuk memastikan bahwa manajemen berjalan dengan baik. Ada dua hal yang ditekankan dalam konsep ini, pertama, pentingnya hak pemegang saham untuk memperoleh informasi dengan benar dan tepat pada waktunya dan, kedua, kewajiban perusahaan untuk melakukan pengungkapan (disclosure) secara akurat, tepat waktu, dan transparan terhadap semua informasi kinerja perusahaan, kepemilikan, dan stakeholder. Dari berbagai hasil pengkajian yang dilakukan oleh berbagai lembaga riset independen nasional dan internasional, menunjukkan rendahnya pemahaman terhadap arti penting dan strategisnya penerapan prinsip-prinsip GCG oleh pelaku bisnis di Indonesia. Selain itu, budaya organisasi turut mempengaruhi penerapan GCG di Indonesia. Kata kunci: GCG, prinsip-prinsip GCG, budaya organisasi, penerapan di Indonesia.