Strategi Komunikasi Masyarakat Samin dalam Membangun Ketahanan Pangan Lokal

Saminculture remain survive in several areas in Blora regency. They have a unique approach in building the local food security.Samin people have a principle that to supplyfood necessity, rice is not the only option.They maintain the variety of the foodstuffs. Therefore, it is interestingto trace how the Samincommunity undertake the communication strategies to build local foodsecurity. The research was conducted in Blora. The analytical technique used is asingle case study by using interactive analysis model, namely: data reduction, presentation ofdata and drawing conclusion or verification. The result shows that communicationstrategies of Samin community in maintaining tradition and building local food securityare reflected in the oral traditions and symbols. The communicators, both parents and communityelders are the most dominant factors affecting the effectiveness of this communication. The communicationchannels used to deliver the message about life values andSamin traditions arethe interpersonal channels, through the customs to gather to discuss or seek guidance from the elders. The effectiveness of communication in inheriting the tradition is reflected incontinuity of the application of Samin community up to now. Masyarakat Samin masih bertahan di beberapa wilayah di Kabupaten Blora. Ada keunikan masyarakat Samin di dalam membangun ketahanan pangan Prinsip masyarakat Samin adalah bahwa untuk memenuhi kebutuhan pangan tidak harus makan nasi, mereka tetap memelihara keanekaragaman pangan. Hal ini menarik untuk ditelusuri bagaimana strategi-strategi komunikasi yang dilakukan oleh masyarakat Samin untuk membangun ketahanan pangan lokal. Penelitian ini dilaksanakan di Kabupaten Blora. Teknik analisis data yang digunakan adalah analisis studi kasus tunggal dengan menggunakan model analisis interaktif, yakni; reduksi data, sajian data dan menarik kesimpulan atau verifikasi. Hasil penelitian menunjukkan bahwa strategi-strategi komunikasi masyarakat Samin di dalam memelihara tradisi dan membangun ketahanan pangan lokal adalah direfleksikan di dalam tradisi lisan dan simbolsimbol. Komunikator, baik orang tua-orang tua mereka dan juga sesepuh masyarakat Samin adalah factor paling dominan yang mempengaruhi efektifitas di dalam komunikasi. Saluran-saluran komunikasi yang digunakan untuk menyampaikan pesan tentang nilai-nilai kehidupan dan tradisi Samin adalah saluransaluran interpersonal, melalui tradisi kumpul bersama untuk mendiskusikan dan meminta nasihat di rumah sesepuh Samin. Efektivitas komunikasi dalam pewarisan nilai tradisi antara lain tercermin kelestarian tradisi budaya Samin yang masih diterapkan masyarakat Samin sampai sekarang. Kata kunci : Budaya, Komunikasi, Solidaritas, Ketahanan Panga

Using a qubit to measure photon number statistics of a driven, thermal oscillator

We demonstrate theoretically how photon number statistics of a driven, damped oscillator at finite temperature can be extracted by measuring the dephasing spectrum of a two-level system dispersively coupled to the oscillator; we thus extend the work of Dykman (1987) and Gambetta et al. (2006). We carefully consider the fidelity of this scheme-- to what extent does the measurement reflect the initial number statistics of the mode? We also derive analytic results for the dephasing of a qubit by a driven, thermal mode, and compare results obtained at different levels of approximation. Our results have relevance both to experiments in circuit cavity QED, as well as to nano-electromechanical systems.Comment: 11 pages; 2 figures adde

Charge Transport in a Quantum Electromechanical System

We describe a quantum electromechanical system(QEMS) comprising a single quantum dot harmonically bound between two electrodes and facilitating a tunneling current between them. An example of such a system is a fullerene molecule between two metal electrodes [Park et al., Nature, 407, 57 (2000)]. The description is based on a quantum master equation for the density operator of the electronic and vibrational degrees of freedom and thus incorporates the dynamics of both diagonal (population) and off diagonal (coherence) terms. We derive coupled equations of motion for the electron occupation number of the dot and the vibrational degrees of freedom, including damping of the vibration and thermo-mechanical noise. This dynamical description is related to observable features of the system including the stationary current as a function of bias voltage.Comment: To appear in Phys. Rev. B., 13 pages, single colum

Aplikasi Metode Nonkonvensional Pada Ekstraksi Bawang Dayak

Ekstraksi konvensional pada umumnya membutuhkan waktu yang lama,kurang ramah lingkungan, danberpotensi memicu kerusakan senyawa, sehingga perlu metode alternatifsepertiUltrasound Assisted Extraction (UAE) dan Ultrasound-Microwave Assisted Extraction (UMAE). Tujuan dari penelitian ini adalah untuk mempelajari aplikasi metode UAE dan UMAE pada ekstraksi bawang dayak. Bawang dayak secara tradisional dikenal sebagai salah satu tanaman obat di Kalimantan. Optimasi ekstraksi dengan UAE dilakukan terhadap variabel waktu ekstraksi  dan kuantitas pelarut.Sedangkan pada metode UMAE, optimasi dilakukan terhadap variabel waktu.Hasil penelitian menunjukkan hasil terbaik dengan variable waktu 30 menit dan kuantitas pelarut 240 mL menggunakan UAE.Rendemen ekstraksi dengan metode UAE lebih tinggi daripada UMAE, dimana trend fluktuatif ditunjukkan oleh hasil ekstraksi dengan metode UMA

Penentuan Total Fenol Ekstrak Umbi Bawang Dayak Hasil Ekstraksi Dengan Metode Ultrasound Assisted Extraction (UAE) dan Ultrasonic-Microwave Assisted Extraction (UMAE)

Bawang dayak (Eleutherine americana) merupakan tanaman khas Kalimantan yang memiliki semua kandungan fitokimia antara lain alkaloid, glikosida, flavonoid, fenolik, steroid dan tanin. Senyawa fenolik berpotensi sebagai antioksidan.Ekstraksi senyawa bahan alam secara konvensional membutuhkan waktu yang lama dan dapat memicu kerusakan senyawa sehingga perlu metode yang lebih cepat dan efesien seperti metode Ultrasound Assisted Extraction (UAE) danUltrasound-Microwave Assisted Extraction (UMAE). Tujuan dari penelitian ini adalah untuk mengekstrak dan menentukan kadar senyawa fenolik dalam bawang dayak. Hasil yang optimal didapatkan dari waktu sonikasi selama 30 menit danvolume pelarut sebesar 240 mL.Penggunaan microwave dalam ekstraksi justru menimbulkan degradasi senyawa fenolik. Kata kunci: total fenol, bawang dayak, Eleutherine americana, UAE, UMA

Probing the quantum coherence of a nanomechanical resonator using a superconducting qubit: I. Echo scheme

We propose a scheme in which the quantum coherence of a nanomechanical resonator can be probed using a superconducting qubit. We consider a mechanical resonator coupled capacitively to a Cooper-pair box and assume that the superconducting qubit is tuned to the degeneracy point so that its coherence time is maximised and the electro-mechanical coupling can be approximated by a dispersive Hamiltonian. When the qubit is prepared in a superposition of states this drives the mechanical resonator progressively into a superposition which in turn leads to apparent decoherence of the qubit. Applying a suitable control pulse to the qubit allows its population to be inverted resulting in a reversal of the resonator dynamics. However, the resonator's interactions with its environment mean that the dynamics is not completely reversible. We show that this irreversibility is largely due to the decoherence of the mechanical resonator and can be inferred from appropriate measurements on the qubit alone. Using estimates for the parameters involved based on a specific realization of the system we show that it should be possible to carry out this scheme with existing device technology.Comment: Submitted to New Journal of Physics: Special Issue "Mechanical Systems at the Quantum Limit

Quantum electro-mechanical systems (QEMS)

We give a quantum description of a Quantum Electro-Mechanical System(QEMS) comprising a single quantum dot harmonically bound between two electrodes and facilitating a tunnelling current between them. An example of such a system is a fullerene molecule between two metal electrodes. The description is based on a quantum master equation for the density operator of the electronic and vibrational degrees of freedom and thus incorporates the dynamics of both diagonal (population) and off diagonal (coherence) terms. We derive coupled equations of motion for the electron occupation number of the dot and the vibrational degrees of freedom, including damping of the vibration and thermo-mechanical noise, and give a semiclassical description of the dynamics under a variety of bias conditions. This dynamical description is related to observable features of the system including the stationary conductance as a function of bias voltage.11 page(s