Critical sections are well known potential performance bottlenecks in multithreaded applications and identifying the ones that inhibit scalability are important for performance optimizations. While previous approaches use idle time as a key measure, we show such a measure is not reliable. The reason is that idleness does not necessarily mean the critical section is on the critical path. We intr...

The excavation and production in underground mines are complicated processes which consist of many different operations. The process of underground mining is considerably constrained by the geometry and geology of the mine. The various mining operations are normally performed in series at each working face. The delay of a single operation will lead to a domino effect, thus delay the starting ti...

In this paper, we propose an efficient scheduling algorithm for problems in which tasks with precedence constraints and communication delays have to be scheduled on an heterogeneous distributed system with an one fault hypothesis. Based on an extension of the Critical-Path Method CPM/PERT, our algorithm combines an optimal schedule with some additional tasks duplication, to provide fault-tolera...

Continuous phase modulation (CPM) is a widely used modulation scheme in communication systems. However, difficulties arise with the design of CPM receivers, due to the nonlinear nature of CPM. One popular solution is to linearize CPM with pulse amplitude modulation (PAM) representation. In this paper, a reduced-complexity non-dataaided (NDA) timing recovery method for PAM-based M-ary CPM receiv...

Perencanaan sebuah proyek merupakan suatu hal yang krusial dalam mencapai keberhasilan akan dilakukan. Proyek kegiatan bersifat sementara dengan tenggat waktu dan biaya sudah ditentukan, untuk itu perlu adanya perencanaan baik mengoptimalkan kedua tersebut agar berjalan sesuai ketentuan diinginkan. Tahapan sangat perusahaan konstruksi melaksanakan dari klien atau pelanggan mereka. Keterlambatan...

Claw pole machines (CPMs) have the advantages of a simple structure and low cost; therefore, they are commonly used in electric vehicles (EV). However, methods to improve reliability efficiency should be studied. So, new type hybrid excitation claw machine (HE-CPM) for EV is proposed. The permanent magnet (PM) inserted rotor, field winding placed on front back ending cover. Because flux path pr...

Penjadwalan proyek merupakan bagian yang paling penting dari sebuah perencanaan proyek, yaitu untuk menentukan kapan dilaksanakan berdasarkan urutan tertentu awal sampai akhir proyek. Metode CPM (Critical Path Method) salah satu metode dimanfaatkan dalam menganalisis penjadwalan waktu kerja Tujuan penelitian ini adalah mencari jalur kritis di dalamnya terdapat aktivitas-aktivitas dan jadwalkan ...

Project planning inevitably involves uncertainty. The basic input parameters for planning (time, cost and resources for each activity) are not deterministic and are affected by various sources of uncertainty. Moreover, there is a causal relationship between these uncertainty sources and project parameters; this causality is ignored in current state-of-the-art project planning techniques (such a...