Labor efficiency is all the efforts made by each member in balancing amount of labor with production produced. The purpose this study was to determine oil palm harvesters at PT ASN Kebun Ujong Lamie, Nagan Raya Regency. This uses a quantitative research method multiple linear regression analysis method. sampling technique used purposive sampling. sample amounted 19 respondents. results showed t...

Beginning with a short historical sketch, electrodynamic energy harvesters with focus on vibration generators and volumes below 1 dm are reviewed. The current challenges to generate up to several milliwatts of power from practically relevant flows and vibrations are addressed, and the variety of available solutions is sketched. Sixty-seven different harvester concepts from more than 130 publica...

Efficient mechanical energy harvesters enable various wearable devices and auxiliary energy supply. Here we report a novel class of mechanical energy harvesters via stress-voltage coupling in electrochemically alloyed electrodes. The device consists of two identical Li-alloyed Si as electrodes, separated by electrolyte-soaked polymer membranes. Bending-induced asymmetric stresses generate chemi...

Two studies examined the effect of Extrinsic Value Orientation (Kasser & Ryan, 1993, 1996) upon harvesting strategies and personal profit within commons dilemmas, in which individual and group interests can be at odds. At an individual or within-group level of analysis, extrinsically oriented persons (who value money, fame, and popularity) harvested more than intrinsically oriented persons (who...

This paper reports an electromagnetic vibration energy harvester using an improved Halbach array. A Halbach array is a specific arrangement of permanent magnets that concentrates the magnetic field on one side of the array while cancelling the field on the other side to almost zero. Previous research showed that although the Halbach array has higher magnetic field density compared to normal mag...

We report all solid-state nanostructured inorganic-organic heterojunction solar cells fabricated by depositing Sb(2)S(3) and poly(3-hexylthiophene) (P3HT) on the surface of a mesoporous TiO(2) layer, where Sb(2)S(3) acts as an absorbing semiconductor and P3HT acts as both a hole conductor and light absorber. These inorganic-organic light harvesters perform remarkably well with a maximum inciden...

A new measurement concept for cut-to-length forest harvesters is presented in this paper. The cut-to-length method means that the trees are felled, delimbed and cut-to-length by the single-grip harvester before logs are transported to the roadside. The concept includes measurements done to standing trees before felling to calculate optimal length of logs. The modern forest harvesters use mechan...

The freight rail systems have an essential role to play in transporting the commodities between the delivery and collection points at different locations such as farms, factories and mills. The fright transport system uses a daily schedule of train runs to meet the needs of both the harvesters and the mills (An Integrated Approach to Optimise Cane Rail Operations (M. Masoud, E. Kozan, G. Kent, ...

Piezoelectric micromachined circular diaphragm energy harvesters for pulsed pressure sources have been fabricated and characterized. These devices utilize silicon carbide (SiC) as the structural material and aluminum nitride (AlN) as the active piezoelectric element to enable operation within harsh environments. In particular, the SiC/AlN energy harvesting device yields an output power density ...

As of September 2007, all cars sold in the United States must be equipped with a Tire Pressure Monitoring System (TPMS). Pending legislation in the European Union and some Asian countries makes universal adoption likely in many parts of the world. Given this large mandated market along with the fact that current TPMS modules require a battery for operation, interest in energy harvesters for TPM...