Muhammad Farchani Rosyid
UGM

Published : 4 Documents
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Konsep Massa Ekonomis Sebagai Ukuran Kelembaman Pelaku Ekonomi Dalam Ruang Harga (Kajian Mekanika Kuantum Dalam Ekonomi Mikro) Rifai, Bachtiar; Palupi, Dwi Satya; Rosyid, Muhammad Farchani
BERKALA FISIKA Vol 13, No 2 (2010): Berkala Fisika, Edisi Khusus
Publisher : BERKALA FISIKA

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Abstract

This paper has studied the correlation of economic systems in the market for goods by using the concept of state and the concept of observable in quantum mechanics.Also proposed the concept of economical mass as an economic actor counterparts concept of inertia or inertia in physics. Studied the things that determine the mass of a principal economic economical. Discussed the possibility of applying the model to market goods with commodities and M N economic actors using the concept of Quantum Many Body Problem. Keywords: Ekonofisika, Applied Physics, Massa economical, Quantum many-body problem
Simulation Nongravitational Dynamics of Cometary Orbit -, Arsini; Saefan, Joko; Rosyid, Muhammad Farchani
JOURNAL OF NATURAL SCIENCES AND MATHEMATICS RESEARCH 2015: JNSMR Volume 1 Issue 1 Year 2015
Publisher : Fakultas Ilmu Tarbiyah dan Keguruan, UIN Walisongo

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Abstract

The tail formation of a comet near the sun leads to the situation in which the comet continually losses a part of its masses so that the mass of the comet decreases monotonically.  A comet may also accrete the material encountered along its orbit so that its mass increases. Therefore, the mass of a comet can be regarded as a function of time. In this work we study simulation the dynamics of the orbit of a comet due to the lost of its mass along the formation of its tail and the material accretion along its orbit. It is assumed  that the comet under consideration is of the form of a ball and rotates so rapidly that the whole ow its surface catches the radiation of the sun equally.
Quaternionic Version of Rotation Groups and Lorentz Group Rahmawati, Latief; Khalif, Muhammad Ardhi; Rosyid, Muhammad Farchani
JOURNAL OF NATURAL SCIENCES AND MATHEMATICS RESEARCH 2015: JNSMR Volume 1 Issue 1 Year 2015
Publisher : Fakultas Ilmu Tarbiyah dan Keguruan, UIN Walisongo

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Abstract

Quaternionic version of rotation groups and Lorentz Group has been constructed. The rotation groups that has been discussed were quaternionic version of groups , O(3), and SO(3). The Lorentz groups that has been discussed were quaternionic version of groups SL(2;C), O(3; 1), and SOo(3; 1). Starting from the definition of each group, the parameters of the group were obtained. Finally the generators of the group were obtained. The commutation of the generator were also computed. 
Geometri Bintang Berotasi pada Keadaan Kritis Setiawan, Iwan; Rosyid, Muhammad Farchani
Jurnal Fisika dan Aplikasinya Vol 6, No 1 (2010)
Publisher : Jurnal Fisika dan Aplikasinya

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Abstract

Konfigurasi kesetimbangan mekanis pada bintang-bintang berotasi ditelaah melalui model Roche. Pada kajian ini bintang diperlakukan sebagai benda tegar, sedangkan geometrinya ditentukan berdasarkan persamaan ekipotensial. Kedaan kritis suatu bintang ditentukan berdasarkan ketiadaan gaya gravitasi total yang mengimbangi tekanan termodinamis. Dalam hal ini terdapat dua kemungkinan, percepatan gravitasi efektifnya lenyapatau batas Edington-nya terlampui. Telah ditentukan penampang membujur bintang-bintang berotasi dari berbagai massa dan kecepatan sudut.