Produksi dan keuntungan usaha ternak puyuh sebagai pendapatan alternatif

PRODUCTION AND PROFIT OF QUAIL FARMING AS AN ALTERNATIVE INCOME. The demand for livestock products every year had increased, so it needs to be balanced with its availability. Local poultry including quail can be developed to support self-sufficiency in providing food sources of animal protein. Quail had the prospect of being developed considering the city of Manado as a foreign tourist destination and its population tends to increase. Youth of Ulil Albab Mosque as a group that had introduced the quail farming business. The problem was the extent to which the success of the quail livestock business introduced by the Youth Group of Ulil Albab Mosque. This study was conducted with the aim of knowing the production and profit of quail farming as source of alternative income. The research method was survey method, the sample was determined purposively. The data collected were primary and secondary data. Respondents were youth group of the Ulil Albab Mosque on the Unsrat Campus determined by purposive sampling of 4 people. The data analysis was descriptive. The success of quail business depends on the characteristics of the group members. The business was developed as many as 200 heads with egg production increasing every day. Egg marketing was through online. Quail egg consumers were housewives. Purchases of eggs were made for consumption by family members. In conclusion, egg production of quail business of the Ulil Albab Mosque Youth group increased and the profits obtained were positive with R/C value of 1.38 Suggestion, it is necessary to expand the business so that the maximum consumption of quail eggs can be increased

Control of a gantry crane using input shaping schemes with distributed delay

This paper presents simulation and real-time implementation of input-shaping schemes with a distributed delay for control of a gantry crane. Both open-loop and closed-loop input-shaping schemes are considered. Zero vibration and zero vibration derivative input shapers are designed for performance comparison in terms of trolley position response and level of sway reduction. Simulation and experimental results have shown that all the shapers are able to reduce payload sway significantly while maintaining satisfactory position response. Investigations with different cable lengths that correspond to 620% changes in the sway frequency have shown the distributed delay-based shaper has asymmetric robustness behaviour. The shaper provides highest robustness for the case of 20% increase in the sway frequency but lower robustness for the case of 20% decrease. However, other schemes give symmetric robustness behaviour for both cases

An AC-DC Rectifier Design at 2.45 GHz for Wireless Power Transfer

In this paper, a microwave doubler rectifier design at 2.45 GHz is presented. This rectifier consists of a shortcircuited matching network, DC block interdigital capacitor and output radial filter. Two fast switching Schottky diodes of HSMS 286B are used for rectification process. The proposed rectifier is fabricated on a low-cost FR-4 substrate with relative permittivity of 4.4. From experimental results, the proposed rectifier can achieve an output greater than 7 V at an input power of 20 dBm. This rectifier has the capability of providing a high output voltage at low cost, which makes it suitable for wireless power transfer (WPT) applications

Dual-Band monopole Antenna For Energy Harvesting System

A planar dual-band monopole antenna is presented for Global System for Mobile Communications (GSM) band applications, which also have the potential to be used for energy harvesting system. The proposed antenna comprises of a ground plane at the back of the FR4 substrate and three microstrip lines which are physically connected with each other at the top surface of the substrate. The monopole antenna achieves good return loss at resonance frequencies of 915 MHz and 1800 MHz with a bandwidth value of 124.2 MHz and 196.9 MHz respectively. The antenna gains of 1.97 dB and 3.05 dB are achieved at resonance frequencies of 900 MHz and 1800 MHz. Experimental results show good agreement with simulated performance. The output from the receiving antenna is also observed in order to analyze the relationship of the power level and the distance between transmitting and receiving antenna. This study is an early investigation in designing the RF energy harvesting system to support green technology and sustainable development particularly for Wireless Sensor Network (WSN) applications

A Parametric Study on Dual-Band Meander Line Monopole Antenna For RF Energy Harvesting

This paper studies the dual-band monopole antenna based on meander line structure for Global System for Mobile Communications (GSM) band applications, which is also has the potential to be used for RF energy harvesting. A meander line antenna with a conductor line is investigated during the design using the Computer Simulation Tool (CST) software. The antenna is fabricated on a double-sided FR-4 printed circuit board using an etching technique. The comparison between simulation and measurement results for the return loss and radiation patterns are observed and are in good agreement. A bandwidth of 97 MHz and return loss of -19.29 dB is obtained at the first frequency band, i,e. 915 MHz, while a bandwidth of 46.2 MHz with a return loss of -16.27 dB are obtained at the second frequency band, i.e. 1800 MHz. This study is an early investigation in designing the RF energy harvesting to support green technology and sustainable development particularly for Wireless Sensor Network (WSN) as well as Radio Frequency Identification (RFID) applications

Negative imaginary theorem with an application to robust control of a crane system

This paper presents an integral sliding mode (ISM) control for a case of negative imaginary (NI) systems. A gantry crane system (GCS) is considered in this work. ISM is a nonlinear control method introducing significant properties of precision, robustness, stress-free tuning and implementation. The GCS model considered in this work is derived based on the x direction and sway motion of the payload. The GCS is a negative imaginary (NI) system with a single pole at the origin. ISM consist of two blocks; the inner block made up of a pole placement controller (NI controller), designed using linear matrix inequality for robustness and outer block made up of sliding mode control to reject disturbances. The ISM is designed to control position tracking and anti-swing payload motion. The robustness of the control scheme is tested with an input disturbance of a sine wave signal. The simulation results show the effectiveness of the control scheme