Natural Regulation of Energy Flow in a Green Quantum Photocell

Manipulating the flow of energy in nanoscale and molecular photonic devices is of both fundamental interest and central importance for applications in light harvesting optoelectronics. Under erratic solar irradiance conditions, unregulated power fluctuations in a light harvesting photocell lead to inefficient energy storage in conventional solar cells and potentially fatal oxidative damage in photosynthesis. Here, we show that regulation against these fluctuations arises naturally within a two-channel quantum heat engine photocell, thus enabling the efficient conversion of varying incident solar spectrum at Earth's surface. Remarkably, absorption in the green portion of the spectrum is avoided, as it provides no inherent regulatory benefit. Our findings illuminate a quantum structural origin of regulation, provide a novel optoelectronic design strategy, and may elucidate the link between photoprotection in photosynthesis and the predominance of green plants on Earth.Comment: 17 pages, 4 figure

Analisis Swot Daya Saing Sekolah: Studi Kasus di sebuah SMA Swasta di Kota Tangerang

The competitiveness of private schools can be seen from the school accreditation ratings. Private schools that have low accreditation values require strategies to improve their competitiveness. The purpose of this study is to analyze the strategic position of private schools in Tangerang using Strenghts, Weaknesses, Opportunities, and Threats. Data collection was carried out through observation, interviews, study of literature and documents, and questionnaires. Data analysis uses IFAS and EFAS, a SWOT analysis to analyze internal and external factors, Strenghts, Weaknesses, Opportunities, and Threats to obtain a strategic position. The results of the SWOT analysis show that the schools analyzed are in quadrant IV (Weaknesses - Threats), which means the school is in the level of survival. Schools must be able to fix internal weaknesses to avoid and reduce threats. The threat of competition from other schools can be minimized by making unique competition as a differentiator among similar schools

Pengaruh Pelatihan Profesi Guru Terhadap Prestasi Kerja Guru Pada Sekolah Menengah Kejuruan 02 Batu

This watchfulness aim is that is: 1) to describe teacher profession training that carried out. 2) to describeteacher labour capacity level. 3) to analyze signifikansi teacher profession training variableinfluence towards teacher labour capacity. this watchfulness use is especially for school that is uponwhich input (input) to increase civil public servant labour capacity in teacher.Based on watchfulness result and discussion that done so can be pulled conclusion that teacherprofession training that carried out in country vocational high school 02 stones enters in goodcategory. teacher labour capacity in country vocational high school 02 Batu enters in tall categoryand influential teacher profession training significant towards teacher labour capacity in countryvocational high school 02 Batu.Suggestion that can be submitted in this watchfulness that is supposed school management sidealways cope to give input to training administrator side on the chance of matter that given cancorrectly as according to need level teachers perserta training. training matter that given genuinelycan to increase teacher ability at the area and education official or administrator institution alwayscope to maximise potential teachers passes training activity that is by using instructor genuinely hasability at the area each

Universality of the single-particle spectra of cuprate superconductors

All the available data for the dispersion and linewidth of the single-particle spectra above the superconducting gap and the pseudogap in metallic cuprates for any doping has universal features. The linewidth is linear in energy below a scale $\omega_c$ and constant above. The cusp in the linewidth at $\omega_c$ mandates, due to causality, a "waterfall", i.e., a vertical feature in the dispersion. These features are predicted by a recent microscopic theory. We find that all data can be quantitatively fitted by the theory with a coupling constant $\lambda_0$ and an upper cutoff at $\omega_c$ which vary by less than 50% among the different cuprates and for varying dopings. The microscopic theory also gives these values to within factors of O(2).Comment: 4 pages, 4 figures; accepted by Phys. Rev. Let

Strategi Penggunaan Dua Bahasa Dalam Proses Komunikasi Pedagang Dengan Pembeli Di Pasar Tanjung Jember

Dalam masayarakat mulitikultural pertukaran budaya pasti terjadi. Komunikasi antarbudaya muncul untuk menjembatani masyarakat multikultural dalam berinteraksi satu sama lain. Strategi komunikasi penting dilakukan untuk memahami pesan-pesan dari bahasa yang berbeda dalam interaksi komunikasi. Seperti halnya bahasa Madura dan Jawa digunakan dalam interaksi komunikasi pedagang dengan pembeli di pasar Tanjung Jember. Penelitian ini menggunakan teori sosisolinguistik yang dikemukakan oleh Chaer dan Agustina. Dengan metode yang digunakan berupa deskriptif kualitatif. Kehidupan masyarakat yang dikelilingi budaya berbeda-beda, menjadikan hambatan dalam berkomunikasi juga penting untuk dipahami dan mencarikan solusi yang tepat berdasarkan pada kajian komunikasi antarbudaya. Pada akhirnya dapat disimpulkan, strategi yang digunakan dalam interaksi komunikasi pedagang dan pembeli di pasar Tanjung berupa pemilihan bahasa, pemaknaan pesan dan penggunaan etika komunikasi. Hasil penelitian iniengungkap strategi pemilihan bahasa oleh pedagang berwujud alih kode, campur kode, dan tunggal bahasa. Penyampaian pesan dari seluruh data dilakukan secara verbal langsung, pesan pada keseluruhan data interaksi komunikasi berupa pernyataan, pertanyaan, permintaan, dan penawaran. Etika komunikasi antarbudaya yang digunakan penjual diantaranya etika kesopanan dan etika kesatuan bahasa. Hambatan komunikasi yang dialami pada penelitian ini disebabkan oleh faktor perbedaan bahasa dan etika buday

Random Forest Algorithm for Prediction of Precipitation

Predicting rainfall needs to be done as one of such effort to anticipate water flooding. One of the algorithm that can be used to predict rainfall is random forest. The porpose of the research is to create a model by implementing random forest algorithm. The research method consist of four steps: data collection, data processing, random forest implementation, analysis. Random forest implementation with using training set resulted model that has accurracy 71,09%, precision 0.75, recall 0.85, f-measure 0.79, kappa statistic 0.33, MAE 0.35, RMSE 0.46, ROC Area 0.78. Implementation of random forest algorithm with 10-fold cross validation resulted the output with accurracy 99.45%, precision 0.99, recall 0.99, f-measure 0.99, kappa statistic 0.99, MAE 0,09, RMSE 0.14, ROC area 1