QCD resummation in hard diffractive dijet production at the electron-ion collider

Diffractive dijet production at the electron-ion collider (EIC) has been proposed to study the gluon Wigner distribution at small-x. We investigate the soft gluon radiation associated with the final state jets and an all order resummation formula is derived. We show that the soft gluon resummation plays an important role to describe E791 data on π-induced diffractive dijet production at Fermilab. Predictions for the EIC are presented, and we emphasize that the soft gluon resummation is an important aspect to explore the nucleon/nucleus tomography through these processes

Jet evolution from weak to strong coupling

Recent studies, using the AdS/CFT correspondence, of the radiation produced by a decaying system or by an accelerated charge in the N=4 supersymmetric Yang-Mills theory, led to a striking result: the 'supergravity backreaction', which is supposed to describe the energy density at infinitely strong coupling, yields exactly the same result as at zero coupling, that is, it shows no trace of quantum broadening. We argue that this is not a real property of the radiation at strong coupling, but an artifact of the backreaction calculation, which is unable to faithfully capture the space-time distribution of the radiation. This becomes obvious in the case of a decaying system ('virtual photon'), for which the backreaction is tantamount to computing a three-point function in the conformal gauge theory, which is independent of the coupling since protected by symmetries. Whereas this non-renormalization property is specific to the conformal N=4 SYM theory, we argue that the failure of the three-point function to provide a local measurement is in fact generic: it holds in any field theory with non-trivial interactions. To properly study a localized distribution, one should rather compute a four-point function, as standard in deep inelastic scattering. We substantiate these considerations with studies of the radiation produced by the decay of a time-like photon at both weak and strong coupling. We show that by computing four-point functions, in perturbation theory at weak coupling and, respectively, from Witten diagrams at strong coupling, one can follow the quantum evolution and thus demonstrate the broadening of the energy distribution. This broadening is slow when the coupling is weak but it proceeds as fast as possible in the limit of a strong coupling.Comment: 49 pages, 6 figure

Aspects of the UV/IR correspondence : energy broadening and string fluctuations

We show that a source which radiates in the vacuum of the strongly coupled N=4 SYM theory produces an energy distribution which, in the supergravity approximation, has the same space-time pattern as the corresponding classical distribution: the radiation propagates at the speed of light without broadening. We illustrate this on the basis of several examples: a small perturbation propagating down a steady string, a massless particle falling into AdS_5, and the decay of a time-like wave-packet. A similar observation was made in Phys. Rev. D81 (2010) 126001 for the case of a rotating string. In all these cases, the absence of broadening is related to the fact that the energy backreaction on the boundary arises exclusively from the bulk perturbation at, or near, the boundary. This is so since bulk sources which propagate in AdS_5 at the speed of light do not generate any energy on the boundary. We interpret these features as an artifact of the supergravity approximation, which fails to encode quantum mechanical fluctuations that should be present even in the strong coupling limit. We argue that such fluctuations should enter the dual string theory as longitudinal string fluctuations, which are not suppressed at strong coupling. We heuristically estimate the effects of such fluctuations and argue that they restore the broadening of the radiation, in agreement with expectations from both quantum mechanics and the ultraviolet/infrared correspondence.Comment: 47 page

The Global Correspondence Principle: A Generalization

This paper generalizes the Global Correspondence Principle by extending, in two major ways, Paul Samuelson\u27s 1971 analysis of the exchange rate response to an international purchasing-power transfer. We analyze the price effect of a shift in any parameter, not necessarily a transfer. We then explore the resulting adjustments in any nonprice variable such as we/fare. As our analysis shows, the direction of these adjustments depends neither on whether they are small or large nor on whether equilibrium is locally stable or unstable

Tanggapan Kepala Sekolah dan Guru Pendidikan Jasmani terhadap Penerapan Kurikulum 2013 pada SMA Negeri Kota Subulussalam Tahun Pelajaran 2015/2016

Penelitian yang berjudul “Tanggapan Kepala Sekolah dan Guru Pendidikan Jasmani Terhadap Penerapan Kurikulum 2013 pada SMA Negeri Kota Subulussalam Tahun Pelajaran 2015/2016” Kurikulum 2013 merupakan sebuah pembelajaran yang menekankan pada aspek afektif atau Perubahan perilaku dan kompetensi yang ingin dicapai adalah kompetensi yang berimbang antara sikap, keterampilan, dan pengetahuan, disamping cara pembelajarannya yang holistik dan menyenangkan ini mengangkat masalah bagaimanakah tanggapan kepala sekolah dan Guru Pendidikan Jasmani terhadap penerapan kurikulum 2013 pada SMA Negeri Kota Subulussalam Tahun Pelajaran 2015/2016. Penelitian ini bertujuan untuk mengetahui tanggapan kepala sekolah dan Guru Pendidikan Jasmani terhadap penerapan kurikulum 2013 pada SMA Negeri Kota Subulussalam Tahun Pelajaran 2015/2016. Metode yang digunakan adalah metode deskriptif dengan pendekatan kualitatif dimana peneliti mendeskripsikan, menggambarkan atau melukiskan secara sistematis, yang bertujuan untuk mengumpulkan informasi tentang keadaan-keadaan yang nyata. Data-data yang dikumpulkan berupa kata-kata, dokumen, gambar dan bukan angka-angka. Populasi adalah keseluruhan subjek penelitian”. Jumlah populasi dalam penelitian ini kepala sekolah dan guru pendidikan jasmani Sekolah Menengah Atas Negeri Kota Subulussalam dengan jumlah 12 orang. Pengumpulan data dilakukan dengan melakukan observasi lapangan dan wawancara. Untuk mengetahui tanggapan kepala sekoalah dan guru pendidikan jasmani terhadap penerapan kurikulum 2013 pada SMA Negeri Kota Subulussalam peneliti melakukan wawancara langsung dan mengambil jawaban sebagai hasil penelitian. Hasil analisis data dari jawaban keseluruhan responden tanggapan kepala sekolah dan guru pendidikan jasmani terhadap penerapan kurikulum 2013 pada SMA Negeri Kota Subulussalam adalah rata-rata setuju dan mendukung dengan penerapan kurikulum 2013 karena lebih efesien dan efektif dalam pembelajaran. Hambatan yang dihadapi adalah masih minimnya sarana dan prasarana, buku pedoman untuk kurikulum 2013, serta perlunya di adakan pelatihan rutin terhadap guru. Disaranakan kepada Dinas Pendidikan, Kepala Sekolah dan Guru Pendidikan Jasmani agar memdukung penuh terhadap penerapan kurikulum 2013 agar tercapainya tujuan pendidikan tersebut.TANGGAPAN KEPALA SEKOLAH DAN GURU PENDIDIKAN JASMANI TERHADAP PENERAPAN KURIKULUM 2013 PADA SMA NEGERI KOTA SUBULUSSALAM TAHUN PELAJARAN 2015/201

Fermentation Ability of Lactobacillus Plantarum on the Infertile Egg at Different Incubation TIME

The use of infertile egg can be offset by increasing the quality of product by fermentation to be a highly competitive commodity. Fermented yield can be used as functional food ingredients which are good for health, for facilitating absorption, and for extending the shelf life of the product. The purpose of this research was to determine the fermentation ability of Lactobacillus plantarum on the infertile egg at different incubation time. Infertile egg was broken and sterilized for 15 minutes and then fermented for 0, 2, and 4 days. Parameters measured in this research were the total count of L. plantarum, pH value, lactic acid content, and moisture content. Experimental data were analyzed using analysis of variance of completely randomized design. The results showed that total L. plantarum (Log10 CFU/ml) increased in line with the incubation time, i.e. 8.3, 9.31, 9.73, respectively for day 0, 2, and 4 of the incubation time. The pH decreased as incubation time increased, namely 7.05, 5.67, 5.36, respectively for day 0, 2, and 4. The value of lactic acid content for day 0, 2, and 4 of incubation period was 0.62%, 1.28%, 2.15%, respectively while the water content was 71.3%, 73.21%, and 74.94%, respectively. In conclusion, this research proved the existence of the fermentation ability of L. plantarumtowards the infertile egg which were indicated by the increase of the total count of L. plantarum, lactid acid content and moisture content, even though pH value decreased as the incubation period increased. The optimum time of the incubation period was 4 days

Stock Prediction Based on Twitter Sentiment Extraction Using BiLSTM-Attention

A profitable stock price prediction will yield a large profit. According to behavioural economics, other people's emotions and viewpoints have a significant impact on business. One of them is the rise and fall of stock prices. Previous studies have shown that public sentiments retrieved from online information can be very valuable on market trading. In this paper, we propose a model that works well in predicting future stock prices by using public sentiments from social media. The online information used in this research is financial tweets collected from Twitter and the stock prices values retrieved from Yahoo! Finance. We collected tweets related to Netflix Company stocks and the stock prices for the same period which is 5 years from 2015 to 2020 as the dataset. We extracted the sentiment value using VADER algorithm. In this paper, we apply a Bidirectional Long Short-Term Memory (BiLSTM) architecture to achieve our goal. Moreover, we created seven different experiments with different stock price parameters and selected sentiment values combinations and investigated the model by adding an attention layer. We experimented with two different sentiment values, tweet’s compound value and tweet’s compound value multiplied by favorites count. We considered the favorites count as one representation of public sentiments. From the seven experiments, the experiment with Bidirectional Long Short-Term Memory (BiLSTM) - attention model combined with our selected stock price parameters namely close price, open price, and using Twitter sentiment values that are multiplied with the tweet’s favorites count yields a better RMSE result of 2.482e-02 in train set and 2.981e-02 in the test set