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Wyszukujesz frazę "wave analysis" wg kryterium: Wszystkie pola


Wyświetlanie 1-5 z 5
Tytuł:
Instrumentation System for Coastal Wave Parameter Monitoring Based on Telemetry Technology Using Accelerometer
Autorzy:
Anwari, Saeful
Subiyanto, Subiyanto
Syamsudin, Mega Laksmini
Faizal, Ibnu
Powiązania:
https://bibliotekanauki.pl/articles/1031248.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Accelerometer
Marine Instruments
Microcontrollers
Waves
Zero Crossing Analysis
Opis:
Sea waves are important in the service of marine meteorological data. Waves that occur at sea have random and complex movements, so that the height and period of the waves are difficult to measure and formulate. This study aims to design and create marine instrumentation that can measure and record the parameters of wave height and period of coastal waves in situ so that the data obtained can reflect the conditions on the field well. PVC (Polyvinyl Chloride) is used for the instrument floats. The buoyancy value of the vehicle shows a floating value of 124.97N, or the maximum amount of load that can be accommodated by the vehicle is ±12 kg. This research was conducted from November 2019 until July 2020. The pre-research conducted at the Laboratory of Marine Science and Technology, and Computer Laboratory FPIK Universitas Padjadjaran. Testing laboratory scale carried out in a static pool, Grand Pangandaran, Pangandaran Regency and field testing was conducted in the Area of Pangandaran Port, Bojong Salawe, Pangandaran Regency, West Java for 5 days with each observation time for 6 hours / day. The results obtained are x, y, and z axis data values with a total of ±3600 data. Data analysis is based on the Zero Crossing Analysis statistical using python. The results of data processing showed a wave height value of 10% (H10) with a value of 3.0 meters, and a wave period of 10% (T10) worth 6.87 seconds. Significant wave height (HS) with a value of 2.8 meters, and significant wave period of 6.8 seconds, with an average wave height of 2.7 meters, and an average wave period of 6.8 seconds. This is consistent with the wave data from BMKG which show values ranging from 2.5 to 4 meters, on June 27-30 2020 and July 1, 2020.
Źródło:
World Scientific News; 2020, 148; 72-89
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Analysis of Radiation Pattern and Standing-Wave Ratio (SWR) of the Gray Hoverman Antenna
Autorzy:
Hamidi, Z. S.
Hamidin, M. Azril
Shariff, N. N. M.
Powiązania:
https://bibliotekanauki.pl/articles/1192610.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Antenna
radiation pattern
radio region
gray Hoverman antenna
Opis:
The radio antenna may be defined as the structure associated with the region of transition between a guided wave and free-space wave, or vice versa. Antennas convert electrons to photon, or vice versa. All involve the same basic principle that the radiation is produced by accelerated or decelerated charge. In order to enhance the reading and measurement, forward scattering technique is used to acquire more data. The aim of this paper is to highlight the theory part of radiation pattern and the analysis of this parameter. From the results, the radiation pattern of the antenna with a range of 700 MHz with the range of -11.0 dB till 10.6 dB. The results show that the maximum front lobe value is 14.4 dB. The back lobe value is 3.32 dBi and the side lobe is -18 dBi. As the gain of a directional antenna increases, the coverage distance increases, but the effective coverage angle decreases due to the lobes being pushed in a certain direction because there is a little energy on the back side of the antenna. The SWR is high in the range of 1-100 MHz with 106 but suddenly decreased to 10 at 100 MHz. The patterns are very dynamics and it less that 10 from 530 MHz to 1000 MHz. We conclude that The simulation results of this antenna structure are quite good as this antenna structure can work in particular frequency bands with a good amount of gain of 14.4 dBi, the SWR of below 10dBi, and impedance matching around 100 ohm.
Źródło:
World Scientific News; 2016, 60; 13-25
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the religious wave basing on the concept of the Four Waves of Terrorism by David Rapoport from the perspective of selected political events
Autorzy:
Jach-Chrzaszcz, Artur
Powiązania:
https://bibliotekanauki.pl/articles/1177952.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Camp David
David Charles Rapoport
Gush Emunin
Hagana
Jerry Falwell
Jewish Terror Organization
Jimmy Carter
Joseph Scheidler
Moral Majority
Operation Rescue
Randall Terry
Terrorism
The Four Waves of Terrorism
Opis:
This article is a comprehensive analysis of the fourth wave of terrorism, the definition of which was coined by an American professor, David Charles Rapoport. The author of this publication, building on his two earlier works, attempts to present the last wave of terrorism predominantly by focusing on selected political events taking place within the timeframe of the so-called religious wave. The article examines said events in the context of security and methods utilized during terrorist attacks.
Źródło:
World Scientific News; 2018, 97; 258-263
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the anarchist and anti-colonial wave basing on the concept of the Four Waves of Terrorism by David Rapoport and selected political events
Autorzy:
Jach-Chrzaszcz, Artur
Powiązania:
https://bibliotekanauki.pl/articles/1178883.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Alexander II of Russia
Black Hand
Communism
Consul Organization
David Charles Rapoport
Fascism
Irish Citizen Army
Iron Guard
NSDAP
Nazism
Secret Army Organization
Terrorism
The Four Waves of Terrorism
William McKinley
Opis:
This article presents the analysis of two initial terrorism waves proposed by an American professor, David Charles Rapoport. In the first part of the dissertation, the author is going to present issues connected with the impossibility of coining a universal definition of terrorism and postulates the need of examining the waves of terrorism. In the further part of the paper, the author presents his considerations based on selected political events which took part during two waves of terrorism. At the end, the author provides an answer to the question of what differences there were between terrorist actions before the First World War and during initial decades after its conclusion. Within the scope of the paper, references to current events strictly relating to security and methods used to deal with terrorist attacks are also provided.
Źródło:
World Scientific News; 2017, 89; 98-103
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the New Left wave basing on the concept of the Four Waves of Terrorism by David Rapoport and selected political events
Autorzy:
Jach-Chrzaszcz, Artur
Powiązania:
https://bibliotekanauki.pl/articles/1158128.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Aldo Moro
Communism
David Charles Rapoport
Far Left
Far Right
ISIS
National Vanguard
Nuclei Armati Rivoluzionari
Red Army Faction
Red brigades
Terorism
The Four Waves of Terrorism
Ulrike Meinhof
Years of Lead
Opis:
The predominant aim of this publication is to perform a comprehensive analysis of the Third Wave of terrorism, the definition of which was proposed by an American professor, David Charles Rapoport. The author of this paper has decided to refer back to his considerations in his earlier work and to define yet another wave of terrorism basing on chosen political events, which took place during the so-called New Left wave. Within the scope of this article, more recent events that are strictly connected with safety and methods utilized during terrorist attacts are touched upon.
Źródło:
World Scientific News; 2018, 92, 2; 385-391
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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