Phase and amplitude of Aharonov-Bohm oscillations in nonlinear three-terminal transport through a double quantum dot

We study three-terminal linear and nonlinear transport through an Aharonov-Bohm interferometer containing a double quantum dot using the nonequilibrium Green's function method. Under the condition that one of the three terminals is a voltage probe, we show that the linear conductance is symmetric with respect to the magnetic field (phase symmetry). However, in the nonlinear transport regime, the phase symmetry is broken. Unlike two-terminal transport, the phase symmetry is broken even in noninteracting electron systems. Based on the lowest-order nonlinear conductance coefficient with respect to the source-drain bias voltage, we discuss the direction in which the phase shifts with the magnetic field. When the higher harmonic components of the Aharonov-Bohm oscillations are negligible, the phaseshift is a monotonically increasing function with respect to the source-drain bias voltage. To observe the Aharonov-Bohm oscillations with higher visibility, we need strong coupling between the quantum dots and the voltage probe. However, this leads to dephasing since the voltage probe acts as a B\"{u}ttiker dephasing probe. The interplay between such antithetic concepts provides a peak in the visibility of the Aharonov-Bohm oscillations when the coupling between the quantum dots and the voltage probe changes.Comment: 17 pages, 9 figures, accepted for publication in Physical Review

Macroscopic proof of the Jarzynski-Wojcik fluctuation theorem for heat exchange

In a recent work, Jarzynski and Wojcik (2004 Phys. Rev. Lett. 92, 230602) have shown by using the properties of Hamiltonian dynamics and a statistical mechanical consideration that, through contact, heat exchange between two systems initially prepared at different temperatures obeys a fluctuation theorem. Here, another proof is presented, in which only macroscopic thermodynamic quantities are employed. The detailed balance condition is found to play an essential role. As a result, the theorem is found to hold under very general conditions.Comment: 9 pages, 0 figure

Particle Monte Carlo simulation of string-like colloidal assembly in 2 dimensions

We simulate structural phase behavior of polymer-grafted colloidal particles by molecular Monte Carlo technique. Interparticle potential, which has a finite repulsive square-step outside a rigid core of the colloid, was previously confirmed via numerical self-consistent field calculation. This model potential is purely repulsive. We simulate these model colloids in the canonical ensemble in 2 dimensions and find that these particles containing no interparticle attraction self-assemble and align in a string-like assembly, at low temperature and high density. This string-like colloidal assembly is related to percolation phenomena. Analyzing the cluster size distribution and the average string length, we build phase diagrams and discover that the average string length diverges around the region where the melting transition line and the percolation transition line cross. This result is similar to Ising spin systems, in which the percolation transition line and the order-disorder line meet at a critical point.Comment: 11 pages, 14 figure

Pengaruh Kegiatan Wisata terhadap Perubahan Penggunaan Lahan di Kecamatan Tawangmangu, Kabupaten Karanganyar

Karanganyar is one of regency in Central Java province which it's potential tourist destinations are quite diverse. Nature destinations is one of the tourism assets which commonly found in Karanganyar, facts shown that the existing landscape conditions vary widely from highland terrain to the landscape of coastal lowland forest. Tourism sector contributes in a significance economic scale towards local incomes of Karanganyar Regency. One district which became the center of tourism activities development is Tawangmangu. Tawangmangu district has an integrated tourism destination named Kawasan Wisata Tawangmangu, which consist of several tourism place option like Grojogan Sewu Waterfall, Sapta Tirta, Campgrounds Sekipan, and Taman Ria Balekambang. Because it is the main area of tourism destination in Karanganyar, adequate infrastructure is available and regularly upgraded in the annual basis, because those improvements is needed to support massive tourism activities which might occurred. With the tourism activities development such as newly constructed infrastructure or addition of a few supporting facilities will certainly give effect to the land use transformation of those aforementioned surroundings. This study aimed to analyze the effects of tourism activities towards land use transformation and analyze the causes of changes regarding land use in the Tawangmangu District. In the process of answering these objectives, this study used descriptive qualitative approach. Research on the effects of tourism activities is based on four main analysis, which is tourism characteristic activities, land use transformation, effects of tourism activities towards land use transformation, and the causes of effect of land use transformation. From those four baseline analysis, result shows that tourism activities which has been occurred so far only affects certain areas of Kalisoro, Tawangmangu, and Blumbang. As for the case of land use transformation, in other villages they are not affected by the existence of tourism activities. Besides tourism, land use transformation in the Tawangmangu District also caused by environmental quality, land values, accessibility, also availability of basic decent facilities and infrastructure

Pengaruh Metode Pelatihan Kerja terhadap Peningkatan Keterampilan Pramusaji Food & Beverage Service Swiss-belhotel Harbour Bay Batam

This research aims to determine how the influence of the training methods work towards food and beverage service waitress skill enhancement at Swiss-Belhotel Harbour Bay Batam.This research uses descriptive quantitative method for examining the issues raised. The sample in this research are 18 people and using census method. While the data collection techniques in this research using questionnaires, observation and documentation. By using a Likert scale as a measure to determine the length of the interval, multiple linear regression analysis, content validity test, reliability test and a test of hypothesis to determine the correlation between x and y.Based on the research that has been done, there is a significant relationship or correlation between the training method to increase waitress skills. The more often it does, the job training methods will increasingly influence the improvement of food and beverage service waitress skills at Swiss-Belhotel Harbour Bay Batam.Keywords: Training Methods, Skills Improvement, Swiss-Belhotel Harbour Bay Bata

The Success of Svlk in Supporting the Improvement of Forest Governance

The Timber Legality Verification System (SVLK) is an instrument stipulated by the Government of Indonesia to build legitimacy on Indonesian forestry governance policies, especially those related to the utilization and distribution of timber forest products. The objective of SVLK is to cut the supply chain of illegal timber from the forest management unit to the market, through timber legality assurance. Since the enactment of SVLK in 2009, there has been no evaluation of the SVLK policy to measure its effectiveness. This study aimed to evaluate the success of SVLK in supporting the improvement of forestry governance. The analytical method used by this study is a descriptive formal evaluation. Interviews were conducted to representatives of four related stakeholder groups: six persons from timber forest product associations, five persons from three government agencies, one person from NGO, and one person from academia. The results of the study indicated that SVLK policy has quite successfully supported the improvement of forestry governance. In this regard, improvement is figured as 46% of law enforcement, 45% of accountability, 43% of participation, 42% of transparency, and 31% of coordination. It can be concluded that the SVLK policy has been quite successful in improving foresty governance

Dampak Program Pengembangan USAha Agribisnis Perdesaan terhadap Kinerja dan Pendapatan USAha Tani Anggota Kelompok Tani (Kasus : Desa Paluh Manan Kecamatan Hamparan Perak Kabupaten Deli Serdang)

Tujuan dari penelitian ini adalah untuk mengetahui kinerja kelompok tani penerima bantuan PUAP, untuk menganalisis dampak PUAP terhadap kinerja Kelompok Tani penerima PUAP, untuk menganalisis dampak PUAP terhadap pendapatan USAha tani anggota Kelompok Tani di Desa Paluh Manan. Penentuan daerah penelitian dilakukan secara purposive (sengaja). Pengambilan sampel dilakukan dengan menggunakan metode Simple Random Sampling yakni pengambilan sampel secara acak tanpa memperhatikan strata/tingkatan dalam anggota populasi. Adapun jumlah sampel sebanyak 47 petani padi sawah yang menerima bantuan dana PUAP. Metode analisis yang digunakan adalah metode Context, Input, Process, Prduct (CIPP) dan uji beda rata-rata berpasangan (Compare Means). Dari hasil penelitian dapat disimpulkan: kinerja kelompok tani penerima PUAP kurang berjalan dengan baik dan terdapat perbedaaan yang nyata antara kinerja sebelum dan sesudah mendapatkan bantuan PUAP dan terjadi penurunan pendapatan dari sebelum mendapatkan bantuan PUAP dan setelah mendapatkan bantuan PUAP

Perbedaan Efektivitas Senam Jantung Sehat dan Senam Lansia terhadap Penurunan Tekanan Darah pada Pasien Hipertensi di Puskesmas Nusa Indah Kota Bengkulu Tahun 2018

Hipertensi adalah penyakit kelainan jantung dan pembuluh darah yang ditandai dengan peningkatan tekanan darah. Salah satu terapi non farmakologi hipertensi adalah olahraga. Senam lansia adalah serangkaian gerak nada yang teratur dan terarah serta terencana yang dilakukan secara tersendiri atau kelompok. Tujuan penelitian untuk mempelajari perbedaan efektivitas senam lansia dan senam jantung sehat terhadap penurunan tekanan darah pada pasien hipertensi di Puskesmas Nusa Indah Kota Bengkulu tahun 2018. Penelitian ini menggunakan rancangan quasi eksperimental pre and post test. Populasi dalam penelitian ini adalah seluruh pasien hipertensi pada anggota senam di Puskesmas Nusa Indah Kota Bengkulu tahun 2018. Pengambilan sampel diambil dari seluruh populasi. Hasil penelitian menggunakan uji Shapiro-Wilk menunjukkan bahwa nilai p = 0,247 (>a=0,05) artinya tidak ada perbedaan efektivitas senam lansia dan senam jantung sehat terhadap penurunan tekanan darah sistolik pada pasien hipertensi di Puskesmas Nusa Indah Kota Bengkulu tahun 2018. Nilai p = 0,450 (>a=0,05) artinya tidak ada perbedaan efektivitas senam lansia dan senam jantung sehat terhadap penurunan tekanan darah diastolik pada pasien hipertensi di Puskesmas Nusa Indah Kota Bengkulu tahun 2018. Diharapkan kepada pasien hipertensi untuk lebih teratur mengikuti kegiatan senam dalam menjaga kestabilan tekanan darah

Hubungan Kondisi Sanitasi Dasar dengan Keluhan Kesehatan Diare Serta Kualitas Air pada Pengguna Air Sungai Deli di Kelurahan Sukaraja Kecamatan Medan Maimun Tahun 2012

Correlation between basic sanitary condition and Diarrhea with the water quality in Sukaraja Subdistrict Medan Maimun District 2012. Diarrhea on Deli river users was fairly high. The cause was suspected by unhealthy basic sanitation and people\u27s habits in using river water as water source. The study aimed to analyze the correlation between condition of basic sanitation and diarrheaon Deli river users and to know Deli water riverquality. The study was conducted by descriptive method with cross sectional study design. This research conducted along the riverside area of Deli on Sukaraja village Medan Maimun Sub District with 59 housewives sample.The result showed there was correlation between sanitation of water resources (p=0,024), family latrines (p=0,016), garbage disposal (p=0,045) and diarrhea, and there was no correlation between sanitation of waste water treatment (p=0,050) and diarrhea. From the results oflaboratory tests,river water quality in upstream area did not exceed the the specified threshold value, such as temperature, nitrate, selenium, and E. coli. According to PP no. 82 tahun 2001, while in middle and downstream area number of E. Coli was foundhad exceeded the specified threshold value. Based on the result of study, Deli river in middle and downstream area had contaminated by feces and there was a significant correlation betweenbasic sanitation and diarrhea. Suggested forLocal Government Medan District to be more intensive on water supply and environmental health program and people to care about their basic sanitation

Quantitative Imaging Assessment of Bioresorbable Scaffolds: Preprocedural Sizing and Acute Performance

The use of bioresorbable scaffolds has several challenges that justify careful assessment of this technology. In the randomised comparison, the Absorb everolimuseluting bioresorbable scaffolds showed similar one-year clinical outcomes to the everolimus-eluting Xience metallic stent, and side branch occlusion and other angiographic complications are not different in the acute performance. Implantation of an oversized Absorb scaffold in a relatively small vessel appears to be associated with a higher 1-year MACE rate driven by more frequent early MI. In the early Absorb studies, several failure modes of bioresorbable scaffolds were documented. To avoid scaffold dislodgement, appropriate lesion preparation is mandatory. In case of unsuccessful initial delivery, a second insertion of the same scaffold should be avoided. Adherence to antiplatelet therapy is of paramount importance to avoid acute or subacute scaffold thrombosis. QCA bifurcation was validated and clinical applicable. IVUS, OCT and MSCT could be used to assess long term bioresorption and serial changes in lumen dimension. Further investigation using intravascular imaging is needed to establish the relationship between acute potential mechanism and late adverse events