Work statistics across a quantum phase transition

We investigate the statistics of the work performed during a quench across a quantum phase transition using the adiabatic perturbation theory. It is shown that all the cumulants of work exhibit universal scaling behavior analogous to the Kibble-Zurek scaling for the average density of defects. Two kinds of transformations are considered: quenches between two gapped phases in which a critical point is traversed, and quenches that end near the critical point. In contrast to the scaling behavior of the density of defects, the scaling behavior of the work cumulants are shown to be qualitatively different for these two kinds of quenches. However, in both cases the corresponding exponents are fully determined by the dimension of the system and the critical exponents of the transition, as in the traditional Kibble-Zurek mechanism (KZM). Thus, our study deepens our understanding about the nonequilibrium dynamics of a quantum phase transition by revealing the imprint of the KZM on the work statistics

Human Mobility in Large Cities as a Proxy for Crime

We investigate at the subscale of the neighborhoods of a highly populated city the incidence of property crimes in terms of both the resident and the floating population. Our results show that a relevant allometric relation could only be observed between property crimes and floating population. More precisely, the evidence of a superlinear behavior indicates that a disproportional number of property crimes occurs in regions where an increased flow of people takes place in the city. For comparison, we also found that the number of crimes of peace disturbance only correlates well, and in a superlinear fashion too, with the resident population. Our study raises the interesting possibility that the superlinearity observed in previous studies [Bettencourt et al., Proc. Natl. Acad. Sci. USA 104, 7301 (2007) and Melo et al., Sci. Rep. 4, 6239 (2014)] for homicides versus population at the city scale could have its origin in the fact that the floating population, and not the resident one, should be taken as the relevant variable determining the intrinsic microdynamical behavior of the system.Comment: 17 pages, 8 Figure

Pemanfaatan Digital Marketing untuk Pengembangan UMKM di SML UMKM Centre

Pengabdian kepada Masyarakat dengan judul “Pemanfaatan Digital Marketing untuk Pengembangan UMKM di SML UMKM CENTRE” dilakukan dengan tujuan untuk menambah wawasan dan pengetahuan baru kepada para pelaku usaha di SML UMKM CENTRE agar dapat mengembangkan usaha melalui platform online untuk meningkatkan taraf hidup masyarakat. Pengetahuan mengenai digital marketing dikatakan masih kurang di masyarakat SML UMKM CENTRE, untuk itu penulis melakukan Kegiatan Pengabdian kepada Masyarakat dilakukan secara online dengan melakukan webinar melalui aplikasi Zoom meeting untuk mempermudah mitra dalam mengikuti kegiatan ini. Penelitian Kegiatan Pengabdian kepada Masyarakat ini menggunakan metode penelitian kualitatif dengan pendekatan desktiptif. Dalam kegiatan ini dilakukan penyebaran Pre-test dan Post-test untuk mengetahui pemahaman peserta mengenai materi yang telah disampaikan oleh para pembicara pada kegiatan webinar yang diselenggarakan. Dengan penggunaan media sosial untuk menjual barang dan jasa akan sangat bermanfaat untuk meningkatkan penjualan para pelaku usaha. Promosi seperti pemasangan iklan, endorsement, dan mengikuti event promosi juga akan sangat membantu dalam meningkatkan penjualan di sosial media. Dalam Kegiatan Pengabdian masyarakat ini dijelaskan awal mula perkembangan digital marketing, bagaimana digital marketing di media sosial dapat berpengaruh bagi penjualan barang dan jasa, dan digital marketing apa saja yang digunakan untuk mempromosikan barang dan jasa. Dengan melakukan Pengabdian kepada Masyarakat di tempat ini, tim peneliti berharap agar wawasan dan materi yang diberikan akan berguna dan diaplikasikan para pelaku usaha di SML UMKM CENTRE setelah mengikuti webinar ini. Tips dan Trick telah diberikan oleh para pembicara untuk memudahkan para peserta dalam mengembangkan usaha mereka. Hasil dari Pre-test dan Post-test peserta juga menunjukkan bahwa para peserta dapat memahami dan mengerti mengenai materi yang disampaikan oleh pembicara webinar

Pelatihan Produk Makanan dengan Kandungan Omega-3 Yang Tinggi Kepada Siswa SMKN 7 Tangerang Selatan

 Omega-3 merupakan lemak makanan yang penting. Omega-3 adalah lemak tak jenuh yang tidak dapat diproduksi oleh tubuh melainkan diperoleh melalui konsumsi makanan. Oleh karena itu, asam lemak Omega-3 disebut juga sebagai asam lemak esensial. Sesuai dengan anjuran WHO, manusia sebaiknya makan dua porsi ikan berminyak per minggu. Salah satu ikan yang mengandung minyak omega-3 yang tinggi adalah ikan tuna. Ikan tuna memiliki kandungan vitamin dan protein yang lengkap serta omega-3 yang tinggi. Ikan tuna memiliki harga yang terjangkau dengan nutrisi yang tinggi sehingga mudah didapatkan. Permintaan ikan tuna cenderung tinggi dikarenakan banyaknya peminat. Oleh karena itu, tim Pengabdian kepada Masyarakat membuat program Pengabdian kepada Masyarakat dengan mengajarkan siswa SMK mengenai Makanan Dengan Kandungan Omega-3 Tinggi dan menyajikan kepada peserta variasi produk Makanan Dengan Kandungan Omega-3 Tinggi dan dapat dibuat di rumah. Diharapkan dengan adanya kegiatan ini dapat bermanfaat dan dikembangkan bagi para siswa.Omega-3 merupakan lemak makanan yang penting. Omega-3 adalah lemak tak jenuh yang tidak dapat diproduksi oleh tubuh melainkan diperoleh melalui konsumsi makanan. Oleh karena itu, asam lemak Omega-3 disebut juga sebagai asam lemak esensial. Sesuai dengan anjuran WHO, manusia sebaiknya makan dua porsi ikan berminyak per minggu. Salah satu ikan yang mengandung minyak omega-3 yang tinggi adalah ikan tuna. Ikan tuna memiliki kandungan vitamin dan protein yang lengkap serta omega-3 yang tinggi. Ikan tuna memiliki harga yang terjangkau dengan nutrisi yang tinggi sehingga mudah didapatkan. Permintaan ikan tuna cenderung tinggi dikarenakan banyaknya peminat. Oleh karena itu, tim Pengabdian kepada Masyarakat membuat program Pengabdian kepada Masyarakat dengan mengajarkan siswa SMK mengenai Makanan Dengan Kandungan Omega-3 Tinggi dan menyajikan kepada peserta variasi produk Makanan Dengan Kandungan Omega-3 Tinggi dan dapat dibuat di rumah. Diharapkan dengan adanya kegiatan ini dapat bermanfaat dan dikembangkan bagi para siswa

Post Quantum Cryptography from Mutant Prime Knots

By resorting to basic features of topological knot theory we propose a (classical) cryptographic protocol based on the `difficulty' of decomposing complex knots generated as connected sums of prime knots and their mutants. The scheme combines an asymmetric public key protocol with symmetric private ones and is intrinsecally secure against quantum eavesdropper attacks.Comment: 14 pages, 5 figure

Haploid females in the isomorphic biphasic life-cycle of Gracilaria chilensis excel in survival

Background Conditional differentiation is one of the most fundamental drivers of biodiversity. Competitive entities (usually species) differ in environmental or ecological niche enabling them to co-exist. Conditional differentiation of haploid and diploid generations is considered to be a requirement for the evolutionary stability of isomorphic biphasic life-cycles and the cause for the natural occurrence of both phases at uneven abundances. Theoretically, stage dependent survival rates are the most efficient way to explain conditional differentiation. Results We tested for conditional differentiation in survival rates among life stages (haploid males, haploid females, and diploids) of Gracilaria chilensis, an intertidal red alga occurring along the Chilean shores. Therefore, the fate of individuals was followed periodically for 3 years in five intertidal pools and, for the first time in isomorphic red algae, a composite model of the instantaneous survival rates was applied. The results showed the survival dependency on density (both competition and Allee effects), fertility, age, size, season and location, as well as the differentiation among stages for the survival dependencies of these factors. The young haploid females survived more than the young of the other stages under Allee effects during the environmentally stressful season at the more exposed locations, and under self-thinning during the active growth season. Furthermore, fertile haploid females had a higher survival than fertile haploid males or fertile diploids. Conclusions Here, we show a survival advantage of haploids over diploids. The haploid females probably optimize their resource management targeting structural and physiological adaptations that significantly enhance survival under harsher conditions. In a companion paper we demonstrate a fertility advantage of diploids over haploids. Together, the survival and fertility differentiation support the evolution and prevalence of biphasic life-cycles.info:eu-repo/semantics/publishedVersio

Umbral chromospheric fine structure and umbral flashes modelled as one: the corrugated umbra

Small-scale umbral brightenings (SSUBs), umbral microjets, spikes or short dynamic fibrils (SDFs), and umbral dark fibrils are found in any observation of the chromosphere with sufficient spatial resolution. We study the spatial and spectral co-evolution of SDFs, SSUBs, and umbral flashes in Ca II 8542 spectral profiles. We produce models that generate the spectral profiles for all classes of features using non-LTE radiative transfer with a recent version of the NICOLE inversion code. We find that both bright (SSUBs) and dark (SDFs) structures are described with a continuous feature in the parameter space that is distinct from the surroundings even in pixel-by-pixel inversions. We find a phase difference between such features and umbral flashes in both inverted line-of-sight velocities and timing of the brightenings. For umbral flashes themselves we resolve, for the first time in inversion-based semi-empirical modelling, the pre-flash downflows, post-flash upflows, and the counter-flows present during the umbral flash phase. We further present a simple time-dependent cartoon model that explains the dynamics and spectral profiles of both fine structure, dark and bright, and umbral flashes in umbral chromospheres. Conclusions. The similarity of the profiles between the brightenings and umbral flashes, the pattern of velocities obtained from the inversions, and the phase relationships between the structures all lead us to put forward that all dynamic umbral chromospheric structures observed to this date are a locally delayed or locally early portion of the oscillatory flow pattern that generates flashes, secondary to the steepening large-scale acoustic waves at its source. Essentially, SSUBs are part of the same shock or merely compression front responsible for the spatially larger umbral flash phenomenon, but out of phase with the broader oscillation.Comment: Accepted for A&A. Abbreviated abstract. Pre-production draf

PELATIHAN PEMBUATAN MAKANAN KHAS BALI “AYAM BETUTU” KEPADA PENGHUNI PANTI JOMPO BETH SHALOM, TANGERANG

Dalam rangka membagikan ilmu dan keterampilan yang telah diperoleh selama masa perkuliahan dan mewujudnyatakan fungsi pembelajaran, maka dirancang sebuah program Pengabdian Kepada Masyarakat (PKM). Program kegiatan ini juga bertujuan untuk memberikan pengetahuan yang didapat oleh mahasiswa pada mata kuliah yang sudah diambil di Fakultas Pariwisata program studi Pengelolaan Perhotelan – Universitas Pelita Harapan, memperkenalkan bahan-bahan dan cara pengolahan base genep dalam penggunaannya pada masakan khas Bali, memperkenalkan ragam masakan khas Bali yang masih belum terekspos, serta memberi contoh langkah-langkah dan cara memasak masakan khas Bali menggunakan base genep dengan tujuan bahwa pengolahannya bisa dilakukan di mana saja, termasuk dari rumah. Oleh karena itu, tim membuat program Pengabdian Kepada Masyarakat dalam bentuk penelitian rancangan buku resep masakan khas Bali menggunakan bumbu base genep. Program Pengabdian Kepada Masyarakat ini diharapkan dapat meningkatkan kepedulian mahasiswa pada masyarakat, bermanfaat bagi masyarakat, dan dapat dikembangkan keberlanjutannya

Measurement of gamma-ray production cross sections for nuclear reaction 31P(p,pγ1-0)31P

In order to implement a standard free PIGE analysis of phosphorus, the cross section of the reaction 31P(p,pγ1-0)31P, γ1-0=1266.1keV was measured for the proton energy range 2.6–4 MeV, with energy steps ranging from 1 keV on resonances to 10 keV off resonance. This data provides additional information in relation to previous works on this reaction, as a more detailed and extended (in energy) measurement was made. The results obtained in this work were compared within the common energy range with previous measurements. There is a fair agreement within the quoted uncertainties although a larger energy step was used by the other authors and some resonances were missed. Also, a validation was accomplished by introducing the measured excitation function in the ERYA code to calculate thick target phosphorus yields of Ca3(PO4)2 and comparing the calculated values with the corresponding measured yields and also with other thick target yields found in the literature. A good agreement was found.authorsversionpublishe