ORCID Profile
0000-0001-7958-6021
Current Organisations
University of Nottingham
,
Politeknik Negeri Madiun
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Publisher: IOP Publishing
Date: 10-2019
DOI: 10.1088/1757-899X/619/1/012023
Abstract: This paper presents an evaluation of Finite Control Set-Model Predictive Control (FCS-MPC) performance for dynamic resources provisioning. Realization of a shared-resources environment is experimented in software system network by virtualization technique. Control parameter regulates the resources provisioning among the users to guarantee the achievement of performance metrics in the network. The objective preferences are maintained in relative term by manipulating a finite set of operating points as the control states. Moreover, an optimization procedure is implemented based on receding horizon prediction of MPC in a feedback control scheme. Further investigation is conducted to examine the performance of optimal FCS and constrained FCS for dynamic system management. The experimental results demonstrate that constrained FCS system provides a better response stability than the optimal FCS. Correspondingly, the range and quantity of input states are significantly influential to the flow of control action. A wider range and longer control state sequence yields to a smoother control signal stream.
Publisher: FKIP Universitas Sultan Ageng Tirtayasa
Date: 28-04-2017
Publisher: Scientific Research Publishing, Inc.
Date: 2011
Publisher: Sunan Gunung Djati State Islamic University of Bandung
Date: 27-11-2019
DOI: 10.15575/TELKA.V5N2.93-102
Abstract: Indonesia saat ini memiliki 129 gunung berapi yang aktif dan hanya 69 diantaranya yang baru bisa termonitoring dengan baik. Bencana gunung api dapat dihindari dengan melakukan monitoring yang baik terhadap kondisi gunung api secara menyeluruh sebagai mekanisme peringatan dini bencana. Monitoring area gunung api yang cukup luas menjadi kendala tersendiri dikarenakan titik pemantauan yang banyak. Wireless Sensor Network (WSN) merupakan salah satu sistem yang sesuai untuk melakukan pemantauan dengan jumlah titik sensor yang terdistribusi, fleksibel dan terintegrasi. Secara garis besar, sistem WSN terdiri dari receiver dan node sebagai transmiter. Komunikasi dari node menuju receiver dapat dilakukan langsung ataupun melalui node yang lainnya. Standar komunikasi nirkabel dari WSN untuk desain dan aplikasi mengacu pada IEEE 802.15.4. Perangkat yang mendukung standar ini salah satunya adalah X-Bee. X-Bee memiliki keunggulan dalam hal kemudahan penggunaan, relatif murah dan berdaya rendah. Salah satu hal yang menjadi poin penting dalam aplikasi WSN pada gunung api adalah jarak jangkauan. Dalam penelitian ini akan dilakukan studi jarak jangkauan Xbee Pro S3 900 pada area gunung api Kelud menggunakan RSSI. Dalam penelitian ini digunakan tiga buah node dan satu receiver sebagai perangkat pengambilan data. Tiga node transmitter tersebut di tempatkan pada tempat yang sesuai untuk mengamati kondisi gunung api Kelud. Jarak jangkauan XBee Pro S3B 900 LoS dengan konfigurasi yang dilakukan, didapatkan jarak jangkauan 79,2 m, sedangkan pada eksperimen mencapai 3,78 km pada nilai RSSI -60dBm. Jarak jangkauan rata-rata tiga node kondisi non LoS berdasarkan nilai RSSI -80 dBm adalah 50 m sedangkan dalam eksperimen didapatkan 441 m. Nilai RSSI hasil eksperimen didapatkan hasil lebih baik daripada hasil simulasi.
Publisher: Springer Science and Business Media LLC
Date: 17-01-2021
DOI: 10.1038/S41380-020-01002-Z
Abstract: Genomewide association studies have found significant genetic correlations among many neuropsychiatric disorders. In contrast, we know much less about the degree to which structural brain alterations are similar among disorders and, if so, the degree to which such similarities have a genetic etiology. From the Enhancing Neuroimaging Genetics through Meta-Analysis (ENIGMA) consortium, we acquired standardized mean differences (SMDs) in regional brain volume and cortical thickness between cases and controls. We had data on 41 brain regions for: attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder (ASD), bipolar disorder (BD), epilepsy, major depressive disorder (MDD), obsessive compulsive disorder (OCD), and schizophrenia (SCZ). These data had been derived from 24,360 patients and 37,425 controls. The SMDs were significantly correlated between SCZ and BD, OCD, MDD, and ASD. MDD was positively correlated with BD and OCD. BD was positively correlated with OCD and negatively correlated with ADHD. These pairwise correlations among disorders were correlated with the corresponding pairwise correlations among disorders derived from genomewide association studies ( r = 0.494). Our results show substantial similarities in sMRI phenotypes among neuropsychiatric disorders and suggest that these similarities are accounted for, in part, by corresponding similarities in common genetic variant architectures.
Publisher: European Alliance for Innovation n.o.
Date: 28-01-2018
Publisher: Universitas Merdeka Malang
Date: 28-08-2018
Publisher: Politeknik Negeri Madiun
Date: 28-02-2017
Abstract: Untuk memenuhi kebutuhan energi listrik yang terus meningkat serta tuntutan energi yang ramah lingkungan, efisien dan berkelanjutan, maka pemanfaatan energi terbarukan harus terus ditingkatkan. Metode yang digunakan adalah dengan membangun pembangkit listrik tenaga angin turbin sumbu horizontal. Teknologi ini mempunyai kelebihan bisa menangkap angin dengan kuat, karena posisinya yang tinggi, efisiensi rotor yang lebih tinggi di banding tipe vertikal, bisa diarahkan ke arah angin, dan mempunyai mekanisme perlindungan terhadap angin yang merusak.Keunggulan teknologi ini sangat cocok dengan topografi negara Indonesia yang memiliki kecepatan angin relatif rendah.Pembangkit listrik tenaga anginturbin sumbu horizontal mempunyai rasio daya yang rendah. Rasio daya keluaran pembangkit listrik tenaga angin dengan turbin tipe horizontal hanya sekitar 30% dari daya angin yang melewati turbin. Pada penelitian ini, untuk meningkatkan daya keluaran pembangkit listrik tenaga angin maka digunakan metode Maximum Power Point Tracker. Dari hasil percobaan dengan berbagai kecepatan angin di dapati bahwa rata-rata daya tanpa MPPT hanya sekitar 44,33% saja sedangkan yang dengan MPPT rasio daya rata-rata mengalami kenaikan yaitu sebesar 49,51%.
Publisher: Informa UK Limited
Date: 02-07-2020
Publisher: Scientific Research Publishing, Inc.
Date: 2011
Publisher: Politeknik Negeri Madiun
Date: 17-05-2019
Publisher: IOP Publishing
Date: 03-2021
DOI: 10.1088/1742-6596/1845/1/012035
Abstract: In industrial field, induction motors are used as a driving tools that requires a relatively constant speed. Power consumption in an induction motor with constant speed can cause a waste of electrical energy. A good performance of an induction motor will determine the quality of production in the industry. Every induction motor must be monitored regularly. This study aims to design a device for detecting the vibrations that occur in an induction motor. Besides, it would be an indicator of the maximum load limit on an induction motor which can later be used as protection on an induction motor. The result showed that the design could be used for providing a diagnosis of the vibration conditions that occur in an induction motor. On the other hand, the design was useful for monitoring and controlling through a simple control circuit designed based on the Internet of Things.
Publisher: IOP Publishing
Date: 03-2021
DOI: 10.1088/1742-6596/1845/1/012045
Abstract: The power factor value of an induction motor is low. This power factor value is due to the large reactive power. Therefore, it is necessary to add capacitors to improve the power factor. The addition of this capacitor uses a capacitor bank with the rotary method. This rotary method is expected to be able to improve the low power factor. The method used is to determine the set point of the desired power factor. Then this method will add the value of the capacitor bank if it does not meet the set point. If it exceeds the set point value, this method will reduce the value of the capacitor bank. For programming this method using Programmable Logic Control. Programmable Logic Control can perform real time monitoring. The results of the test method showed that the capacitor bank worked to improve the power factor optimization. From the power factor of the drilling machine 0.54 to 0.86 in the test. Further developments can make capacitor sizes smaller and more varied in order to optimize the power factor.
Publisher: IOP Publishing
Date: 07-2018
Publisher: IEEE
Date: 09-2018
Publisher: BMJ
Date: 21-06-2019
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for NUR ASYIK HIDAYATULLAH.