New Resistorless Third-Order Quadrature Sinusoidal Oscillators

This paper introduces four new resistorless, third-order, electronically tunable, quadrature sinusoidal oscillators using three operational transconductance amplifiers (OTAs) and three capacitors. The proposed third-order quadrature sinusoidal oscillators (TOQSOs) provide noninteracting control of the oscillation condition (OC) and oscillation frequency (OF) by changing the transconductance of different OTAs, to produce sustained oscillations and offer quadrature output voltages and currents. Two of the proposed quadrature oscillator circuits have capacitor control of OF, a feature, useful in capacitive transducers. The presented TOQSO structures have good frequency stability and exhibit low active and passive sensitivities. PSPICE simulations using CMOS OTAs along with hardware results (using off-the-shelf available OTA IC LM13700) have also been provided to confirm the workability of the presented circuits.

INFLUENCE OF SOCIAL SUPPORT FOR FAMILIES PARENTING MOTHER IN PREVENTING CHILD STUNTING

Stunting was one form of malnutrition characterized by height does not correspond to the age. The occurrence of stunting very influenced by parenting in providing nutrition in children toddlers. The purpose of this study was to analyze the relationship of social support to parenting mother's family in toddlers in the village Jabon subdistrict Mojoanyar Mojokerto regency. The method used correlation analytic design with cross sectional. The study population is the mother of the toddler who is housed in villages Jabon subdistrict Mojoanyar Mojokerto district with lots of 250 children. The sample size were 70 samples used by simple random sampling. Analysis data used linear regression. Variabel independent was social supportand was parenting mother's family. Instrumen used questionnaire social support the family with good frequency rate by 35 respondents (50.0%). Maternal parenting in preventing stunting in children with good frequency rate by 37 respondents (52.9%). Results of linear regression test with p equal to 0.00. This means relationship between social support to parenting mother's family in toddlers. The better social support mother's family then parenting in toddlers the better so as to prevent stunting.

IMPLEMENTATION OF ECOLETERACY LEARNING DESIGN AT ADIWIYATA SCHOOL AS AN EFFORT FORMATION SOCIETY IN ALAM INSAN MULIA SCHOOL OF SURABAYA

Purpose of Study: The research was to know the implementation of ecoliteracy learning design at Adiwiyata School as an effort formation society in Alam Insan Mulia School of Surabaya. Methodology: This research used a descriptive quantitative approach with 30 respondents. The data was achieved through observation, interview, and students’ questionnaire with relevant questions. Then, the data that was achieved analyze descriptively used percentage and trick with frequency divide to respondent amount times 100%. Results:Based on the result of analysis, it can identified significantly, so the result contemplation from all that design ecoleteracy learning was valid, it can be proofed in SAIM School, which the process was doing in the society school and in the general environment with the learning process with the society has a base environment with habituate students care to society in SAIMS, with the 25 frequencies in the amount of 75.0%, and contemplation from the average that was achieved in the amount of 3.53 with good category. After that, the implementation of ecoleteracy learning influence to students’ compassion well in SAIM School, and it can be seen from students’ questionnaire that showed 25 frequencies in the amount of 75.0%, contemplation from the average that was achieved in the amount of 3.01, so it was good frequency. Implications/Applications: The implementation of ecoleteracy learning design in Adiwiyata School was good enough category in SAIMS.

Compact Size Triple Notched-bands UWB Antenna with Sharp Band-Rejection Characteristics at WiMAX and WLAN Bands

In this paper, a compact triple band-notched Ultra Wideband (UWB) antenna with sharp band-elimination features and controlled notched bandwidths is proposed and discussed. The design is made up of a rectangular-shaped patch UWB planar monopole antenna with double collections of band-notched configurations. The band-notched configurations are involved to produce the desired lower and upper stop bands with good frequency selectivity and suitable stop bandwidths. The first notch is realized by using a C-shaped slot etched in the radiating patch in order to eliminate the interference at the WiMAX (3.4 - 3.8 GHz) applications. The second and the third notches are realized together by using a pair of U-shaped resonators that are located beside the feed line in both sides to eliminate the interference with the lower WLAN (5.15–5.35 GHz) and the higher WLAN (5.725–5.825GHz) bands. Additionally, the bandwidths of the lower and upper stop bands can be control separately by changing the parameters of the band-notched configurations. Furthermore, the suggested triple notched bands UWB antenna is optimized, fabricated, and measured for verification purposes. The measured results are close to the simulated ones.

Balun bandpass filter on slot-line resonators with intrinsic balanced performance in amplitude and phase

In this paper, a novel class of balun bandpass filters is presented on slot-line resonator (SLR) toward intrinsic balanced performance in amplitude and phase. The proposed balun filter consists of three inductive-coupled SLRs in the middle, one single-ended unbalanced port, and one balanced port with two terminals. According to the distinct field conversion from the slotline to the microstrip feeding line, good balanced performance in amplitude, and phase performance can be intrinsically realized over a wide frequency range. To validate the proposed technique, a prototype third-order balun filter is designed, fabricated, and measured. Both the simulated and measured results have demonstrated that the proposed balun filter can not only achieve good frequency selectivity but also exhibit intrinsic balanced performance in amplitude and phase.

Simulation of Sinusoidal Vibration Control Algorithm Based on Hydraulic Vibration Table

In this paper, the model of hydraulic vibration system is established and sinusoidal vibration control algorithm is discussed and studied. A sinusoidal control hydraulic vibration system is designed. By simulation, this system has good frequency response characteristic and sine sweep control function.