145 research outputs found
Dipole and Quadrupole electroexcitations of the isovector T=1 particle-hole states in C-12
Electroexcitations of the dominantly T=1 particle-hole states of C-12 are
studied in the framework of the harmonic oscillator shell model. All possible
T=1 single-particle-hole states of all allowed angular momenta are considered
in a basis including single-particle states up to the 1f-2p shell. The
Hamiltonian is diagnoalized in this space in the presence of the modified
surface delta interaction. Correlation in the ground state wave functions by
mixing more than one configuration is considered and shows a major contribution
that leads to enhance the calculations of the form factors. A comparison with
the experiment shows that this model is able to fit the location of states and
a simple scaling of the results give a good fit to the experimental form
factors.Comment: 5 pages, 4 figures, 5 tables, Late
A Reconfigurable Radiation Pattern Annular Slot Antenna
This paper contemplate a theoretical analysis of a pattern reconfigurable antenna using annular slot antenna
operating in low frequency. A shorting pin is inserted to allow the annular slot antenna to have an omnidirectional radiation pattern like a monopole antenna. The reconfigurable antenna consists of numerous metal cylinders arranged around the annular slot antenna. By controlling pin diodes associated with the metal
cylinders, the antenna is capable of working up in different directions with a maximum working beam angle of 11.25° at a frequency of 1.05 GHz
Random Phase Approximation with High Orbits Configuration for the Low Lying Negative Parity, T = 0 States in 16O
Calculations of Longitudinal Form Factors of p-Shell Nuclei, Using Enlarged Model Space Including Core-Polarization Effects with Realistic Two-Body Effective Interaction
Results On Strongly Continuous Semigroup
Some results of strongly continuous semigroup (-semigroup) of functional analysis ofnbsp bounded linear operator defining on a separable Banachnbsp spaces like hypercyclic, topologically transitive, chaotic, mixing, weekly mixing and topologically ergrodic have been discussed. The generalization ofnbsp hypercyclic, topologically transitive, chaotic, mixing, weakly mixingnbsp and topologically ergrodic for the direct sum of two and /or hence to n -semigroup strongly continuous dynamicnbsp system of semigroups in infinite dimensional separable Banach space have been developed with proofs and discusses
Analisis Kerusakan Bantalan Gelinding Dengan Variasi Kecepatan Putar Berdasarkan Pola Getaran Menggunakan Metoda Envelope Analysis
Bantalan gelinding merupakan salah satu elemen mesin yang memiliki peran penting pada mesin di mana memiliki fungsi untuk mengurangi besarnya gaya gesek yang ditimbulkan oleh poros saat berputar. Sehingga kegagalannya menjadi alasan yang paling umum untuk mesin mengalami kerusakan. Jenis kerusakan yang terjadi pada bantalan gelinding meliputi, kerusakan lintasan luar, kerusakan lintasan dalam, kerusakan elemen gelinding, dan kerusakan kombinasi. Pada makalah ini, deteksi kerusakan bantalan gelinding bagian lintasan luar, lintasan dalam, elemen gelinding, atau juga kerusakan kombinasi akan dikaji berdasarkan sinyal getaran. Namun sinyal getaran yang dihasilkan merupakan sinyal modulasi, oleh karena itu diperlukan metoda Analisis envelope untuk mengekstrak informasi dari sinyal modulasi. Analisis sinyal getaran domain frekuensi setelah dilakukannya Analisis envelope menjadi dasar utama. Pola-pola sinyal hasil getaran dianalisis melalui plot fitur sinyal getaran, kemudian dibandingkan antara kondisi bantalan gelinding normal dan bantalan gelinding yang mengalami kerusakan sebagaimana disebutkan di atas. Dengan cara perbandingan fitur sinyal getaran tersebut, maka deteksi kerusakan bantalan gelinding dapat dilakukan
Stabilization of Uncertain Non-Bilinear Descriptor Dynamical System Via Logarithmic Norm Approach
In this paper a feedback controller stabilization of non-bilinear descriptor system have been developed via logarithmic norm approach. The sufficient conditions on parametric uncertainty where the system is regular or impulse free have been given. Some theoretical results supported have been adopted with suitable illustrations example for designing a stabilizing controller for non-bilinear uncertain descriptor systems based on the theoretical result have also been developed.nbsp nbs
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