Vibration Energy Trending and Speed-Frequency Transformation in Run-Up/Coast-Down Tests

2014 ◽  
pp. 101-108 ◽  
Author(s):  
Nader Sawalhi ◽  
Suri Ganeriwala
Keyword(s):  
Vibration Energy ◽  
Frequency Transformation ◽  
Run Up

Wave Run-Up on a Simulated Beach

1977 ◽  
Author(s):  
A. J. Sutherland ◽  
J. N. Sharma ◽  
O.H. Shemdin
Keyword(s):  
Run Up

Simply supported FPEDs connected by springs for broadband energy harvesting

2020 ◽  
Vol 64 (1-4) ◽  
pp. 201-210
Author(s):  
Yoshikazu Tanaka ◽  
Satoru Odake ◽  
Jun Miyake ◽  
Hidemi Mutsuda ◽  
Atanas A. Popov ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Evaluation Method ◽  
Energy Harvester ◽  
Vibrational Energy ◽  
Functional Materials ◽  
Vibration Energy ◽  
Theoretical Evaluation ◽  
Vibration Energy Harvester ◽  
Polyvinylidene Difluoride ◽  
Simply Supported

Energy harvesting methods that use functional materials have attracted interest because they can take advantage of an abundant but underutilized energy source. Most vibration energy harvester designs operate most effectively around their resonant frequency. However, in practice, the frequency band for ambient vibrational energy is typically broad. The development of technologies for broadband energy harvesting is therefore desirable. The authors previously proposed an energy harvester, called a flexible piezoelectric device (FPED), that consists of a piezoelectric film (polyvinylidene difluoride) and a soft material, such as silicon rubber or polyethylene terephthalate. The authors also proposed a system based on FPEDs for broadband energy harvesting. The system consisted of cantilevered FPEDs, with each FPED connected via a spring. Simply supported FPEDs also have potential for broadband energy harvesting, and here, a theoretical evaluation method is proposed for such a system. Experiments are conducted to validate the derived model.

The Alliance between Fundamentalist Christians and the Pro-Israel Lobby: Christian Zionism in US Middle East Policy

2004 ◽  
Vol 2 (2) ◽  
pp. 163-187
Author(s):  
Donald E. Wagner
Keyword(s):  
Middle East ◽  
Political Influence ◽  
Conservative Movement ◽  
International Media ◽  
Christian Zionism ◽  
The Us ◽  
Run Up ◽  
Middle East Policy ◽  
Near Future ◽  
Political Scene

It is a common assumption in the international media that the fundamentalist Christian Right suddenly appeared on the US political scene following the 11 September 2001 tragedy, and that it became a major force in shaping US policy in the Middle East. While it is true that fundamentalist Christians have exercised considerable influence during the George W. Bush administration, their ascendance is neither new nor surprising. The movement has demonstrated political influence in the US and England intermittently for more than a hundred years, particularly in the formation of Middle East policy. This article focuses on the unique theology and historical development of Christian Zionism, noting its essential beliefs, its emergence in England during the nineteenth century, and how it grew to gain prominence in the US. The alliance of the pro-Israel lobby, the neo-conservative movement, and several Christian Zionist organizations in the US represents a formidable source of support for the more maximalist views of Israel's Likud Party. In the run-up to the 2004 US presidential elections this alliance could potentially thwart any progress on an Israeli–Palestinian peace plan in the near future. Moreover, Likud ideology is increasingly evident in US Middle East policy as a result of this alliance.

Hybrid Vibration Energy Harvester based on Stochastic Resonance

2018 ◽  
Vol 138 (5) ◽  
pp. 185-190
Author(s):  
Meng Su ◽  
Dai Kobayashi ◽  
Nobuyuki Takama ◽  
Beomjoon Kim
Keyword(s):  
Stochastic Resonance ◽  
Energy Harvester ◽  
Vibration Energy ◽  
Vibration Energy Harvester

Skenario Tsunami Menggunakan Data Parameter Gempabumi Berdasarkan Kondisi Batimetri (Studi Kasus : Gempabumi Maluku 28 Januari 2004 )

Jurnal Segara ◽  
2015 ◽  
Vol 11 (2) ◽  
Author(s):  
Robby Wallansha ◽  
Wiko Setyonegoro
Keyword(s):  
Run Up

Maluku merupakan salah satu daerah di timur Indonesia yang memiliki potensi tsunami yang cukup tinggi, ini dibuktikan dengan lebih dari 25 kejadian tsunami yang terekam di daerah Maluku dari tahun 1629 – 2006 (katalog database tsunami online Gusiakov (2005), Puspito (2007) dan Katalog Gempa Merusak dan Tsunami BMKG), tsunami yang terbesar terjadi pada tanggal 17 Pebruari 1674 yang menewaskan lebih dari 2900 orang dengan run-up hingga mencapai 80 meter dan menghancurkan kota Ambon dan juga pada tanggal 12 Oktober 1899 yang menenggelamkan kota Amahai di Pulau Seram dengan korban tewas mencapai 4000 orang. Oleh karena itu perlu dilakukan pembuatan skenario tsunami untuk mendapatkan kemungkinan tinggi run-up yang bersumber di daerah perairan Maluku dengan menggunakan software Tsunami L-2008. Berdasarkan Katalog Gempabumi Signifikan dan Merusak 1821 – 2009 yang dikeluarkan BMKG, bahwa pada tanggal 28 Januari 2004 telah terjadi gempabumi di Maluku mengakibatkan tsunami yang terobservasi di Namlea, dengan epicenter 3,110 LS – 127,300 BT dengan kekuatan Mw = 6,6 SR. Dalam pembuatan skenario tsunami dalam penelitian ini dengan merubah nilai magnituda gempabumi (Mw=7,0 SR, Mw=7,5 SR. Mw=8,0 SR) berdasarkan referensi setelah itu menggunakan hubungan rumusan empiris dari Hanks and Kanamori untuk mendapatkan nilai slip (m) sekaligus membuat beberapa kombinasi skenario tsunamidengan mempertahankan nilai momen seismik dan merubah nilai luas fault dan slip (m), untuk momen seismik didapatkan berdasarkan rumusan empiris dari Wells and Coppersmith (1994) sedangkan untuk luas fault berdasarkan rumusan empiris dari  Papazachos et al (2004) dengan mengasumsikan bahwa luas fault berbentuk persegi panjang. Dari sebelas skenario tsunami yang dibuat dari setiap magnituda gempabumi diperoleh tinggi run-up tertinggi untuk Mw=7,0 SR yaitu dengan tinggi 0,59 m di daerah Huamual sedangkan terendah di daerah Latuhalat dengan tinggi run-up 0,09 m, untuk Mw = 7,5 SR diperoleh tinggi run-up tertinggi mencapai 2,73 m di Huamual dan terendah 0,36 di Latuhalat, dan untuk Mw = 8,0 SR didapatkan tinggi run-up tertinggi hingga 8,19 m di Huamual dan terendah di Latuhalat dengan tinggi run-up 0,94 m.

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