Nonlinear H∞ control design of structural systems: An experimental study under faults

Author(s):  
Gisela Pujol ◽  
Leonardo Acho
2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Sri Aminingsih ◽  
Warsini

Latar belakang : kebiasaan cuci tangan yang benar sangat penting. Namun menurut Badan Pusat Statistik kebiasaan cuci tangan yang benar di Provinsi Jawa Tengah belum maksimal yaitu sebesar 53,6%. Dari observasi yang dilakukan peneliti di Dusun Ngegot Kabupaten Karanganyar masih terlihat bahwa beberapa anak saat membeli jajanan langsung mengonsumsi jajanan tersebut tanpa mencuci tangan terlebih dahulu, padahal masing-masing rumah sudah menyediakan tempat cuci tangan di depan rumah. Tujuan : untuk mengetahui pengaruh penerapan metode bernyanyi terhadap kemampuan cuci tangan pada anak usia sekolah. Metode : penelitian ini merupakan penelitian eksperimental dengan desain pre-post experimental control design untuk mengetahui pengaruh metode bernyanyi dalam meningkatkan kemampuan cuci tangan anak usia sekolah. Hasil : hasil pretest pada kelompok perlakuan terdapat 93,3% anak yang tidak mampu melakukan cuci tangan dengan benar dan 6,7% anak yang mampu melakukan cuci tangan dengan benar dan hasil posttest  terdapat 20% anak yang tidak mampu melakukan cuci tangan dengan benar dan 80% anak yang mampu melakukan cuci tangan dengan benar. Sedangkan pada kelompok kontrol hasil pretest terdapat 93,3% anak yang tidak mampu melakukan cuci tangan dengan benar dan 6,7% anak yang mampu melakukan cuci tangan dengan benar dan hasil posttest  terdapat 60% anak yang tidak mampu melakukan cuci tangan dengan benar dan 40% anak yang mampu melakukan cuci tangan dengan benar. Dengan menggunakan Uji Mann Whitney diperoleh hasil p = 0,028. Kesimpulan : penerapan metode bernyanyi efektif untuk meningkatkan kemampuan mencuci tangan. Kata kunci : kemampuan mencuci tangan, metode bernyanyi, penerapan   Background : correct hand washing habits are very important. However, according to the Central Statistics Agency, the correct habit of washing hands in Central Java Province is not maximal, namely at 53.6%. From observations made by researchers in Ngegot, Karanganyar Regency, it is still seen that some children when buying snacks immediately consume these snacks without washing their hands first, even though each house has provided a place to wash their hands in front of the house. The aims of the study : this is to determine the effect of the singing method on the ability to wash hands in school age children. Method. This research is an experimental study with a pre-post experimental control design to determine the effect of the singing method in improving the ability of school age children to wash their hands. Result : the pretest results in the treatment group were 93.3% of children who were unable to wash their hands properly and 6.7% of children who were able to wash their hands properly and posttest results there were 20% of children who were unable to wash their hands properly and 80% children who are able to wash their hands properly. Whereas in the control group, the pretest results were 93.3% of the children who were unable to wash their hands properly and 6.7% of the children who were able to wash their hands properly and the posttest results there were 60% of the children who were unable to wash their hands properly and 40 % of children who are able to wash their hands properly. By using the Mann Whitney test the result was p = 0.028. Conclusion : the application of the singing method is effective in improving the ability to wash hands. Key words: ability to wash hands, singing method, application


Materials ◽  
2004 ◽  
Author(s):  
James Pearson ◽  
Mohanraj Prabhugoud ◽  
Mohammed Zikry ◽  
Kara Peters

The long-term goal of this project is the development of embedded, optimally distributed, multi-scale sensing methodologies that can be integrated into material systems for failure identification in structural systems. The coupling of sensor data fusion with a three-dimensional predictive framework will provide insight and understanding of events that are difficult, if not impossible, in any experimental study, such as subsurface damage and crack nucleation in structural systems. The current work presents an experimental study of the survivability and degradation behavior of an optical fiber Bragg grating sensor, surface mounted on a woven fiber composite material system during multiple low velocity impacts. The results reveal that as sensor degradation occurs, additional coupling phenomena other than Bragg reflection are observed in the grating sensor. From these additional modes, information on the sensor/host bond and fiber degradation is obtained.


Author(s):  
Musnaeni Musnaeni ◽  
Nasaruddin Nasaruddin

The main problem in this research is the teachers who do not use effective learning methods. One interesting learning methods to be implemented is the Everyone Is Teacher Here methods. It gives the opportunity for each student to act as a teacher for his friends. The research is experimental study using pretest-posttest control design. The technique of collecting data through observation and tests. The population is all students of class IX SMP Muhammadiayah Palopo many as 43 students. Based on the results of descriptive data analysis showed that the control class and experimental class before treatment with less category with an average of 57.14 and 55.73. Meanwhile, after treatment showed that the control class is in the category simply mean = 71.81 and the experimental class in both categories with mean = 78.73. So we can conclude that there is influence in terms of qualitative and quantitative terms occur due to the different categories of learning outcomes and the average value of students, in other words, there is the effect of the application of Everyone Is Teacher Here methods the results of students' mathematics learning in SMP Muhammadiyah Palopo


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