bluuebunny/crossref_metadata_2025 huggingface dataset:
REVISITING THE “PURE” OIL-EXCHANGE CO-MOVEMENT FROM A TIME-DOMAIN PERSPECTIVE
Authors: MA ZHE , YANG LU
Published: September 2020

In this paper, we examine the differences between CNY and other major currencies in coherence and the lead–lag relationship across the different time horizons to clarify whether crude oil, monetary factors, or both drive the movement of exchange rates. We employ partial and multiple wavelet coherence analyses to examine oil-exchange co-movement by excluding the influence of Federal Reserve System (FED) monetary policy — namely, the stance and uncertainty of monetary policy — and the difference in domestic and foreign monetary policy rates. Overall, we find that monetary easing by the FED is a major factor driving the co-movement. Specifically, after excluding the possible effects of monetary policy factors, the movement of the Euro exhibits the strongest and the Japanese yen the weakest dependence on crude oil price changes, whereas the British pound shows a moderate dependence. By contrast, the CNY shows strong co-movement with the crude oil price only over the long term implying the low degree of integration with the global markets. Our empirical results provide meaningful information for investors and policymakers.
Automatic Binary Data Classification Using a Modified Allen–Cahn Equation
Authors: Kim Sangkwon , Kim Junseok
Published: September 2020

In this paper, we propose an automatic binary data classification method using a modified Allen–Cahn (AC) equation. The modified AC equation was originally developed for image segmentation. The equation consists of the AC equation with a fidelity term which enforces the solution to be the given data. In the proposed method, we start from a coarse grid and refine the grid until the accuracy of the data classification reaches a given tolerance. Therefore, we can avoid a laborious trial and error procedure. For a numerical method for the modified AC equation, we use a recently developed explicit hybrid scheme. We perform several 2D and 3D computational tests to demonstrate the performance of the proposed method. The computational results confirm that the proposed algorithm is automatic.
Deep Learning-based Roman-Urdu to Urdu Transliteration
Authors: Alam Mehreen , ul Hussain Sibt
Published: September 2020

Attention-based encoder-decoder models have superseded conventional techniques due to their unmatched performance on many neural machine translation problems. Usually, the encoders and decoders are two recurrent neural networks where the decoder is directed to focus on relevant parts of the source language using attention mechanism. This data-driven approach leads to generic and scalable solutions with no reliance on manual hand-crafted features. To the best of our knowledge, none of the modern machine translation approaches has been applied to address the research problem of Urdu machine transliteration. Ours is the first attempt to apply the deep neural network-based encoder-decoder using attention mechanism to address the aforementioned problem using Roman-Urdu and Urdu parallel corpus. To this end, we present (i) the first ever Roman-Urdu to Urdu parallel corpus of 1.1 million sentences, (ii) three state of the art encoder-decoder models, and (iii) a detailed empirical analysis of these three models on the Roman-Urdu to Urdu parallel corpus. Overall, attention-based model gives state-of-the-art performance with the benchmark of 70 BLEU score. Our qualitative experimental evaluation shows that our models generate coherent transliterations which are grammatically and logically correct.
Multi-Channel Mapping Image Segmentation Method Based on LDA
Authors: Hu Qiu-Xia , Tian Jie , He Dong-Jian
Published: September 2020

In order to improve the segmentation accuracy of plant lesion images, multi-channels segmentation algorithm of plant disease image was proposed based on linear discriminant analysis (LDA) method’s mapping and K-means’ clustering. Firstly, six color channels from RGB model and HSV model were obtained, and six channels of all pixels were laid out to six columns. Then one of these channels was regarded as label and the others were regarded as sample features. These data were grouped for linear discrimination analysis, and the mapping values of the other five channels were applied to the eigen vector space according to the first three big eigen values. Secondly, the mapping value was used as the input data for K-means and the points with minimum and maximum pixel values were used as the initial cluster center, which overcame the randomness for selecting the initial cluster center in K-means. And the segmented pixels were changed into background and foreground, so that the proposed segmentation method became the clustering of two classes for background and foreground. Finally, the experimental result showed that the segmentation effect of the proposed LDA mapping-based method is better than those of K-means, ExR and CIVE methods.
A New Method on Super Pixel Reducing Stereo Matching Time of Integrated Imaging
Authors: Wang Xue-Guang , Li Ming , Zhang Lei , Zhao Hui , Palaoag Thelma D.
Published: September 2020

Stereo vision and 3D reconstruction technologies are increasingly concerned in many fields. Stereo matching algorithm is the core of stereo vision and also a technical difficulty. A novel method based on super pixels is mentioned in this paper to reduce the calculating amount and the time. Stereo images from University of Tsukuba are used to test our method. The proposed method spends only 1% of the time spent by the conventional method. Through a two-step super-pixel matching optimization, it takes 6.72 s to match a picture, which is 12.96% of the pre-optimization.
CPI Big Data Prediction Based on Wavelet Twin Support Vector Machine
Authors: Fan Yiqing , Sun Zhihui
Published: September 2020

In order to effectively improve the accuracy of Consumer Price Index (CPI) prediction so as to more truly reflect the overall level of the country’s macroeconomic situation, a CPI big data prediction method based on wavelet twin support vector machine (SVM) is proposed. First, the historical CPI data are decomposed into high-frequency part and low-frequency part by wavelet transform. Then a more advanced twin SVM is used to build a prediction model to obtain two kinds of prediction results. Finally, the wavelet reconstruction method is used to fuse the two kinds of prediction results to obtain the final CPI prediction results. The wavelet twin SVM model is used to fit and predict CPI index. Experimental results show that compared with the similar prediction methods, the proposed prediction method has higher fitting accuracy and smaller root mean square error.
Identification of Axial and Radial Impacts for Pneumatic Artificial Muscles in Static and Dynamic Processes Based on Autocorrelations of Differential Pressure Signals
Authors: Wang Binrui , Bao Chunlei , Chen Dijian
Published: September 2020

Since the pneumatic artificial muscle is usually employed to actuate the robot, it is inevitable that it will collide with obstacles and/or other objects such that there will be impacts. The typical impacts include the axial and radial ones. This paper detects these two kinds of impact by a designed differential pressure measurement system, and achieves the goal of identifying them by the autocorrelations of their differential pressure signals in both static and dynamic processes, which are the two main work processes of the pneumatic artificial muscle. In detail, first we design an experiment scheme by connecting the pneumatic artificial muscle to the differential pressure sensor through two pressure tubes; then the axial and radial impact signals are acquired via the impact experiments under different work conditions (impact strength, internal pressure, load, and impact position); finally, the identification of the axial and radial impact signals are achieved based on the autocorrelation technique with a well-selected threshold. The experiments illustrate the effectiveness of the whole method.
Single EXCCII-Based Analog Multiplier Structure
Authors: Kumar Atul
Published: September 2020

A simple analog multiplier circuit employing one current-mode active building block (ABB) and two n-channel metal-oxide semiconductor (NMOS) transistors is presented in this paper. The used ABB is extra-X second generation current conveyor. The used NMOS transistors are operated in triode region. The circuit has appropriate impedance level at the input and output terminals. Some other key features of the proposed circuit are as follows: suitable to integrated circuit fabrication, good dynamic range and low operating power supplies. The nonideal effects of extra-X second generation current conveyor on the proposed circuit are studied. Additionally, the layout of the proposed circuit is developed using Cadence VIRTUOSO Analog Design Environment with gpdk 0.18[Formula: see text][Formula: see text]m technology and post layout simulation results are given to verify the theoretical aspects.
Improving Compression Ratios for Code-Based Test Pattern Compressions through Column-Wise Reordering Algorithms
Authors: Zhang Minghe , Kuang Jishun , Huang Jing , Li Renfa
Published: September 2020

Chip testing is an effective way to reduce the number of defective or faulty chips that reach the market. However, as large-scale test patterns need to be transmitted into a circuit under test during testing, the transmission time dominates the test application time of the chip testing. Therefore, code-based compression methods are widely used in compressing test patterns because of their capability to reduce the transmission time and save storage space significantly. Current code-based compression methods cannot fully apply the inherent characteristics of test patterns yet. To address this problem, this study proposes two-stage test pattern preprocessing algorithms, thereby improving the efficiency of the code-based compression method. First, we propose a column-wise reordering for Hadamard matrix (CRHM) algorithm, which decomposes a test set consisting of test patterns into a primary component set (PCS) and a residual component set (RCS). The PCS inherits some 1s from the original test set (OTS), and other 1s belong to the RCS. As the number of 1s contained in the RCS is less than that in the OTS, the RCS can obtain a higher code-based compression ratio. The PCS can be generated by an on-chip generator, which does not consume transmission time. Second, we propose a novel column-wise reordering for the RCS (CRRCS) algorithm. The CRRCS solves the new location of each column of the RCS one by one in the list to decrease the entropy of the RCS. The entropy denotes the shortest length of the codeword required for the symbol to be encoded. The smaller entropy value refers to a higher compression ratio. For the sorted RCS, more high-frequency symbols can be replaced by shorter codewords. Experimental results based on seven code-based compression methods show that the proposed algorithms can increase the average compression ratio by a total of 19.91%, and the highest average compression ratio reaches 85.04% for ISCAS’89 benchmark circuits.
Design of an Inverter-Base, Active-Feedback, Low-Power Transimpedance Amplifier Operating at 10 Gbps
Authors: Honarmand Sima , Pourahmadi Majid , Shayesteh Mohammad Reza , Abbasi Kavoos
Published: September 2020

In this paper, a low-power structure as an inverter-base circuit is reported for broadband applications. The focus in this study is in obtaining a low-power structure. By applying cascoded structure to an inverter as a feedforward network in the structure, the DC current and hence the power dissipation are decreased. Also, by adding a two-stage active feedback, which yields no miller capacitance, to the cascoded inverter, the structure of the TIA is completed. Simulation results in HSPICE using 90[Formula: see text]nm CMOS technology parameters show 41[Formula: see text]dB[Formula: see text] transimpedance gain, 6.5[Formula: see text]GHz frequency bandwidth and 2.7[Formula: see text][Formula: see text]Arms input referred noise, which consumes only 1.67[Formula: see text]mw power at 1[Formula: see text]V supply. Results and analysis indicate that the proposed TIA is suitable to work as a low-power 10 Gbps transimpedance amplifier in an optical receiver.
An Optimization Method of Carrier Suppression for UHF RFID
Authors: Liu Qingshan , Chai Changchun
Published: September 2020

The carrier leakage is the key factor that limits the performance of ultra-high frequency radio identification (UHF RFID) reader in high-power transmission mode. The relationship between phase noise suppression and path delay of the carrier leakage is discussed in this work. It is indicated that the suppression degree of the carrier leakage varies periodically with the carrier’s transmission path delay. A novel suppression method of the carrier leakage by adjusting antenna feeder’s length is proposed. The experimental results are provided to verify the feasibility and correctness of the method.
Design of Phase Shifters with Ladder Stubs Via Real Frequency Technique
Authors: Şengül Metin
Published: September 2020

Generally at high frequencies, lumped-elements are not preferred because of their limited range of values. Therefore, in this work, a kind of phase shifter formed with ladder stubs is studied and a new approach to design phase shifter’s low pass and high pass sections which are composed of series or shunt connected open-ended or short-ended stubs is proposed. In the approach, since the main focus is to form low pass and high pass two-port sections, switching process is not considered. First, the designer selects the section type and the total number of stubs in the sections; it is not necessary to fix the two-port section topologies and not necessary to derive the characteristic impedance and delay expressions for the stubs. In the example, 5-stub two-port sections of a [Formula: see text] phase shifter are designed by means of the proposed approach.
A Method of Fast Evaluation of an MC Placement for Network-on-Chip
Authors: Zhao Hongzhi , Zhang Fangzheng , Chen Linhui , Lu Minghong
Published: September 2020

On-chip Memory-Controllers (MCs) placement is a key issue in designing Network-on-Chip (NoC) with multiple MCs. A good MC placement can efficiently decrease NoC memory-access latency. However, it is difficult to search an optimal MC placement within a feasible time period due to huge design space of MC placements and much time spent on evaluating whether an MC placement is better or not. This paper focuses on how to evaluate an MC placement quickly. As a common manner of evaluating an MC placement, network simulation manners often cost too much time. In this paper, we propose a method of fast evaluation of an MC placement. There are two contributions in this paper: the first one is to use an indicator “path-load” to approximately represent memory-access-flow transmission latency; the second one is to propose a highly-efficient method of calculating path-load to evaluate an MC placement to take the place of traditional simulation manner. To verify this method, we embed it into a traversal method to find out optimal MCs placements. Experiments show that almost all MCs placements with the minimum path load value are those placements that are of the best network performance in the same network scenarios. In a word, our proposed method can efficiently evaluate MCs placements rather than simulation manners. It can be embedded into searching algorithm to accelerate achieving optimal solutions.
Design and Electromigration Study for a Stacked Distributed Power Amplifier
Authors: Lin Qian , Wu Hai-Feng , Zhu Lin , Zhang Xiao-Ming , Liu Lin-Sheng
Published: September 2020

In this paper, the implementation and electro-migration (EM) study in GaAs pHEMT stacked distributed power amplifier (SDPA) is presented. A 0.2[Formula: see text]7 GHz PA is designed using a 0.15[Formula: see text][Formula: see text]m GaAs pHEMT process, which employs 4-distributed 2-stacked-field effect transistors (FETs) to obtain about 1-watt output power with corresponding power added efficiency (PAE) of 26–32% within a very small chip size of 2.9[Formula: see text]mm2. Using the finite element analysis (FEA), the EM prediction for an SDPA is achieved effectively to find the weakest spot for the stacked distributed PA. This can provide valuable guidance for circuit design and analysis.
Noncommutative inclusion–exclusion, representations of left regular bands and the Tsetlin library
Authors: Blachar Guy , Rowen Louis H. , Vishne Uzi
Published: September 2020

We find a semigroup [Formula: see text], whose category of partial representations contains the representation category [Formula: see text] of the free left regular band [Formula: see text]. We use this to construct a resolution for the absolute kernel of a representation of [Formula: see text], for which the kernel [Formula: see text] of the Markov operation in the Tsetlin library model is a prominent example. We obtain a formula for the dimension of the absolute kernel, generalizing the equality of the dimension of [Formula: see text] to the number of derangements of order [Formula: see text].
Qualitative features of a nonlinear, nonlocal, agent-based PDE model with applications to homelessness
Authors: Lindstrom Michael R. , Bertozzi Andrea L.
Published: September 2020

In this paper, we develop a continuum model for the movement of agents on a lattice, taking into account location desirability, local and far-range migration, and localized entry and exit rates. Specifically, our motivation is to qualitatively describe the homeless population in Los Angeles. The model takes the form of a fully nonlinear, nonlocal, non-degenerate parabolic partial differential equation. We derive the model and prove useful properties of smooth solutions, including uniqueness and [Formula: see text]-stability under certain hypotheses. We also illustrate numerical solutions to the model and find that a simple model can be qualitatively similar in behavior to observed homeless encampments.
A possible thermodynamic origin of the spacetime minimum length
Authors: Liu Ting-Ping , Pu Jin , Han Yan , Jiang Qing-Quan
Published: September 2020

In this paper, by applying the generalized uncertainty principle (GUP) at the final stage of black hole evaporation, we have proposed a thermodynamic explanation for the minimal scale of quantum gravity, i.e. it may stem from the basic requirements of the third law of thermodynamics for quantum gravitation system. At the same time, we have interestingly found that the third law of black hole thermodynamics acts as a supervisor in quantum gravity spacetime to ensure the causality of the spacetime as that does in classical gravity.
Dark energy and neutrino mass from a transient vacuum particle pair model
Authors: Rosencwaig Allan
Published: September 2020

We propose that the transient vacuum fluctuations of quantum fields can be represented by transient vacuum quanta where both the lifetime and spatial extent are given by the Heisenberg Uncertainty Principle, HUP. Accordingly, a quantum field fluctuation at any spatial site results in the creation of a transient HUP-limited vacuum pair, corresponding to the particle and the antiparticle associated with that quantum field. All HUP-limited vacuum pairs, both massive and massless, are found to be on-shell particles, and are indistinguishable from each other except for differences related to their exchange symmetry. We find that the net vacuum energy density of all HUP-limited vacuum pairs is identically zero at any energy where both bosonic and fermionic transient vacuum pairs are present. The net vacuum energy density, from zero energy to the Planck limit, is found to be proportional to that of the rest mass of the lightest fermion, the lowest mass neutrino eigenstate. This net energy density is equal to the observed dark energy density if the mass of the lightest neutrino eigenstate is 3.2[Formula: see text]meV. The model predicts the absolute values of the masses of the three neutrino mass eigenstates and of the three neutrino flavor eigenstates for both normal and inverted ordering. The sum of the neutrino masses is found to be below the Planck satellite upper limit of 120[Formula: see text]meV, and the neutrino mass sum for normal ordering is below the most stringent upper bound of 78[Formula: see text]meV, indicating a preference for normal ordering.
BEHAVIORAL PORTFOLIO CHOICE UNDER HYPERBOLIC ABSOLUTE RISK AVERSION
Authors: ESCOBAR-ANEL MARCOS , LICHTENSTERN ANDREAS , ZAGST RUDI
Published: September 2020

This paper studies the optimal investment problem for a behavioral investor with probability distortion functions and an S-shaped utility function whose utility on gains satisfies the Inada condition at infinity, albeit not necessarily at zero, in a complete continuous-time financial market model. In particular, a piecewise utility function with hyperbolic absolute risk aversion (HARA) is applied. The considered behavioral framework, cumulative prospect theory (CPT), was originally introduced by [A. Tversky & D. Kahneman (1992) Advances in prospect theory: Cumulative representation of uncertainty, Journal of Risk and Uncertainty 5 (4), 297–323]. The utility model allows for increasing, constant or decreasing relative risk aversion. The continuous-time portfolio selection problem under the S-shaped HARA utility function in combination with probability distortion functions on gains and losses is solved theoretically for the first time, the optimal terminal wealth and its replicating wealth process and investment strategy are stated. In addition, conditions on the utility and the probability distortion functions for well-posedness and closed-form solutions are provided. A specific probability distortion function family is presented which fulfills all those requirements. This generalizes the work by [H. Jin & X. Y. Zhou (2008) Behavioral portfolio selection in continuous time, Mathematical Finance 18 (3), 385–426]. Finally, a numerical case study is carried out to illustrate the impact of the utility function and the probability distortion functions.
MOMENT APPROXIMATIONS OF DISPLACED FORWARD-LIBOR RATES WITH APPLICATION TO SWAPTIONS
Authors: VAN APPEL JACQUES , MCWALTER THOMAS A.
Published: September 2020

We present an algorithm to approximate moments for forward rates under a displaced lognormal forward-LIBOR model (DLFM). Since the joint distribution of rates is unknown, we use a multi-dimensional full weak order 2.0 Ito–Taylor expansion in combination with a second-order Delta method. This more accurately accounts for state dependence in the drift terms, improving upon previous approaches. To verify this improvement we conduct quasi-Monte Carlo simulations. We use the new mean approximation to provide an improved swaption volatility approximation, and compare this to the approaches of Rebonato, Hull–White and Kawai, adapted to price swaptions under the DLFM. Rebonato and Hull–White are found to be the least accurate. While Kawai is the most accurate, it is computationally inefficient. Numerical results show that our approach strikes a balance between accuracy and efficiency.
Vibration Analysis of Bidirectional Functionally Graded Timoshenko Beams Using Chebyshev Collocation Method
Authors: Chen Wei-Ren , Chang Heng
Published: September 2020

This paper studies the vibration behaviors of bidirectional functionally graded (BDFG) Timoshenko beams based on the Chebyshev collocation method. The material properties of the beam are assumed to vary simultaneously in the beam length and thickness directions. The Chebyshev differentiation matrices are used to reduce the ordinary differential equations into a set of algebraic equations to form the eigenvalue problem for free vibration analysis. To validate the accuracy of the proposed model, some calculated results are compared with those obtained by other investigators. Good agreement has been achieved. Then the effects of slenderness ratios, material distribution types, gradient indexes, and restraint types on the natural frequency of BDFG beams are examined. Through the parametric study, the influences of the various geometric and material parameters on the vibration characteristics of BDFG beams are evaluated.
Two-cocycles and cleft extensions in left braided categories
Authors: Heckenberger István , Wolf Kevin
Published: September 2020

We define two-cocycles and cleft extensions in categories that are not necessarily braided, but where specific objects braid from one direction, like for a Hopf algebra [Formula: see text] a Yetter–Drinfeld module braids from the left with [Formula: see text]-modules. We will generalize classical results to this context and give some application for the categories of Yetter–Drinfeld modules and [Formula: see text]-modules. In particular, we will describe liftings of coradically graded Hopf algebras in the category of Yetter–Drinfeld modules with these techniques.
Tilting pair over split-by-nilpotent extensions
Authors: Liu Dajun , Wei Jiaqun
Published: September 2020

Let [Formula: see text], [Formula: see text] be two finite dimensional algebras over a field [Formula: see text], such that [Formula: see text] is a split extension of A by the nilpotent bimodule [Formula: see text]. We mainly give necessary and sufficient conditions for a tilting pair [Formula: see text] such that [Formula: see text] or [Formula: see text] are tilting pairs. Also, we obtain a similar condition such that a Wakamatsu tilting pair [Formula: see text] in [Formula: see text]-mod can be a Wakamatsu tilting pair [Formula: see text] in [Formula: see text]-mod.
Prediction of miRNA-disease associations based on Weighted K-Nearest known neighbors and network consistency projection
Authors: Toprak Ahmet , Eryilmaz Esma
Published: September 2020

MicroRNAs (miRNA) are a type of non-coding RNA molecules that are effective on the formation and the progression of many different diseases. Various researches have reported that miRNAs play a major role in the prevention, diagnosis, and treatment of complex human diseases. In recent years, researchers have made a tremendous effort to find the potential relationships between miRNAs and diseases. Since the experimental techniques used to find that new miRNA-disease relationships are time-consuming and expensive, many computational techniques have been developed. In this study, Weighted [Formula: see text]-Nearest Known Neighbors and Network Consistency Projection techniques were suggested to predict new miRNA-disease relationships using various types of knowledge such as known miRNA-disease relationships, functional similarity of miRNA, and disease semantic similarity. An average AUC of 0.9037 and 0.9168 were calculated in our method by 5-fold and leave-one-out cross validation, respectively. Case studies of breast, lung, and colon neoplasms were applied to prove the performance of our proposed technique, and the results confirmed the predictive reliability of this method. Therefore, reported experimental results have shown that our proposed method can be used as a reliable computational model to reveal potential relationships between miRNAs and diseases.
Pi-stacking interaction perphenazine modified zinc(II)phthalocyanine nanoparticles for photothermal and photodynamic therapy
Authors: Biyiklioglu Mack
Published: September 2020

This article has been retracted. For details, please refer to the Retraction Notice published in Vol.25, No.2 (2021).
Modulation of the optical properties of chiral porphyrin dimers by introducing bridged chiral amide-bonds
Authors: Qin Mingfeng , Zhang Zhen , Zhu Weihua , Mack John , Soy Rodah C. , Nyokong Tebello , Liang Xu
Published: September 2020

The d/l-enantiomers of a series of three Zn(II)tetraarylporphyrin dimers were synthesized and isolated by incorporating a bridging amide-bonded xanthene moiety at the para-position of one of the meso-aryl rings. The electronic structures and optical properties were modulated by incorporating chiral amino acid moieties into the amide-bonding moieties of the xanthene bridge that contain methyl, tolyl and 2-methylindole substituents. A cofacial dimer was formed in the presence of 1,4-diazabicyclo[2.2.2]octane (DABCO) resulting in a significant red shift of the B band, due to a relative destabilization of the HOMO, which has large MO coefficients on the pyrrole nitrogens. The sign sequences observed in the B band region of the CD spectra due to the presence of the chiral amino acid moieties were modified due to this change in geometry. Significant CD intensity is also observed in the B band region of the CD spectra of anion radical species during in situ spectroelectrochemical measurements.
Generating the twist subgroup by involutions
Authors: Altunöz Tüli̇n , Pamuk Mehmetci̇k , Yildiz Oguz
Published: September 2020

For a nonorientable surface, the twist subgroup is an index [Formula: see text] subgroup of the mapping class group generated by Dehn twists about two-sided simple closed curves. In this paper, we consider involution generators of the twist subgroup and give generating sets of involutions with smaller number of generators than the ones known in the literature using new techniques for finding involution generators.
On the compressed essential graph of a module over a commutative ring
Authors: Payrovi S. H. , Babaei S. , Sengelen Sevim E.
Published: September 2020

Let [Formula: see text] be a commutative ring and [Formula: see text] be an [Formula: see text]-module. The compressed essential graph of [Formula: see text], denoted by [Formula: see text] is a simple undirected graph associated to [Formula: see text] whose vertices are classes of torsion elements of [Formula: see text] and two distinct classes [Formula: see text] and [Formula: see text] are adjacent if and only if [Formula: see text] is an essential ideal of [Formula: see text]. In this paper, we study diameter and girth of [Formula: see text] and we characterize all modules for which the compressed essential graph is connected. Moreover, it is proved that [Formula: see text], whenever [Formula: see text] is Noetherian and [Formula: see text] is a finitely generated multiplication module with [Formula: see text].
On Franklin wavelets
Authors: Pitchai Murugan S. , Youvaraj G. P.
Published: September 2020

The Franklin wavelet (piecewise linear wavelet) is a wavelet function [Formula: see text] with dilation factor 2 which is continuous on [Formula: see text], linear on [Formula: see text] and [Formula: see text] for all [Formula: see text]; which is constructed from a multiresolution analysis(MRA) with a scaling function [Formula: see text] which is continuous on [Formula: see text], linear on [Formula: see text] and [Formula: see text] for every [Formula: see text]. Wavelets with composite dilation factor have the ability to produce long and narrow window functions, with varied orientations, well-suited to applications of image processing; also it is more effective and flexible for the construction of multiscale image representation. This motivates us to consider the following problem to construct some composite dilation Franklin wavelets. Given a natural number [Formula: see text], we ask, is there a continuous [Formula: see text] that is linear on [Formula: see text] and [Formula: see text], for [Formula: see text], [Formula: see text] and for all [Formula: see text], which generates an MRA with dilation factor [Formula: see text] to construct an orthonormal [Formula: see text]- wavelet, i.e. a wavelet with dilation factor [Formula: see text]? For [Formula: see text] and [Formula: see text] we have proved that [Formula: see text] generates an MRA with dilation factor [Formula: see text] only if [Formula: see text]. Next for [Formula: see text] and [Formula: see text], we have proved that, if [Formula: see text] generates an MRA with dilation factor [Formula: see text], then [Formula: see text]. Also, for [Formula: see text], we have proved existence of a continuous [Formula: see text] which generates an MRA with dilation factor [Formula: see text]. We have also constructed the corresponding orthonormal [Formula: see text]-wavelet.
Minimum independent dominating energy of graphs
Authors: Pawar Madhukar M. , Bhangale Shilpa T.
Published: September 2020

The aim of this paper is to introduce the concept of minimum independent dominating energy of a graph, compute it for some classes of graphs and to study its bounds.
A GPU Spatial Processing System for CHIME
Authors: Denman Nolan , Renard Andre , Vanderlinde Keith , Berger Philippe , Masui Kiyoshi , Tretyakov Ian ,   The CHIME Collaboration
Published: September 2020

We present an overview of the Graphics Processing Unit (GPU)-based spatial processing system created for the Canadian Hydrogen Intensity Mapping Experiment (CHIME). The design employs AMD S9300x2 GPUs and readily available commercial hardware in its processing nodes to provide a cost- and power-efficient processing substrate. These nodes are supported by a liquid-cooling system which allows continuous operation with modest power consumption and in all but the most adverse conditions. Capable of continuously correlating 2048 receiver-polarizations across 400[Formula: see text]MHz of bandwidth, the CHIME X-engine constitutes the most powerful radio correlator currently in existence. It receives 6.6[Formula: see text]Tb/s of channelized data from CHIME’s FPGA-based F-engine, and the primary correlation task requires [Formula: see text] complex multiply-and-accumulate operations per second. The same system also provides formed-beam data products to commensal FRB and Pulsar experiments; it constitutes a general spatial-processing system of unprecedented scale and capability, with correspondingly great challenges in computation, data transport, heat dissipation, and interference shielding.
Finding the Largest Successful Coalition under the Strict Goal Preferences of Agents
Authors: Su Zhaopin , Zhang Guofu , Yue Feng , He Jindong , Li Miqing , Li Bin , Yao Xin
Published: September 2020

Coalition formation has been a fundamental form of resource cooperation for achieving joint goals in multiagent systems. Most existing studies still focus on the traditional assumption that an agent has to contribute its resources to all the goals, even if the agent is not interested in the goal at all. In this article, a natural extension of the traditional coalitional resource games (CRGs) is studied from both theoretical and empirical perspectives, in which each agent has uncompromising, personalized preferences over goals. Specifically, a new CRGs model with agents’ strict preferences for goals is presented, in which an agent is willing to contribute its resources only to the goals that are in its own interest set. The computational complexity of the basic decision problems surrounding the successful coalition is reinvestigated. The results suggest that these problems in such a strict preference way are complex and intractable. To find the largest successful coalition for possible computation reduction or potential parallel processing, a flow-network–based exhaust algorithm, called FNetEA, is proposed to achieve the optimal solution. Then, to solve the problem more efficiently, a hybrid algorithm, named 2D-HA, is developed to find the approximately optimal solution on the basis of genetic algorithm, two-dimensional (2D) solution representation, and a heuristic for solution repairs. Through extensive experiments, the 2D-HA algorithm exhibits the prominent ability to provide reassurances that the optimal solution could be found within a reasonable period of time, even in a super-large-scale space.
Efficient Graph Search
Authors: Kelly Terence
Published: September 2020

Welcome to
Drill Bits
, a new column about programming. This inaugural episode shows how graph search algorithms can avoid unnecessary work. A simple modification to classic breadth-first search improves the lower bound on its running time: Whereas classic BFS always requires time proportional to the number of vertices plus the number of edges, the improved "Efficient BFS" sometimes runs in time proportional to the number of vertices alone. Both asymptotic analysis and experiments show that Efficient BFS can be much faster than classic BFS. All software used in the experiments is available for download, and suggestions for further explorations are provided.
Studying the Properties of SBS/Rice Husk Ash‐Modified Asphalt Binder and Mixture
Authors: Lu Zhen , Sha Aimin , Wang Wentong , Gao Junfeng
Published: September 2020

Sustainable materials in the field of road pavement have become a research direction in recent years. In this study, the rice husk ash with small dosage of styrene‐butadiene‐styrene (SBS) was added as a bioadditive into the base asphalt to modify its properties. Different contents (0, 2, 5, 10, and 15%) of rice husk ash (RHA) and 1% of SBS were selected to prepare the modified asphalt. Penetration, softening point, ductility, rotational viscosity test, and temperature sweep test were conducted to investigate the properties of SBS/RHA‐modified asphalt binder. Rutting test, moisture susceptibility, and low‐temperature cracking were utilized to evaluate the performances of SBS/RHA‐modified asphalt mixture. The results showed that the penetration decreased and the softening point and rotational viscosity enhanced while the ductility slightly decreased with the incorporation of rice husk ash. The SBS/RHA‐modified asphalt mixture had better high‐temperature performance than that of the virgin asphalt mixture but slightly lower moisture stability and low temperature performance. The tensile strength ratio of the virgin and modified asphalt mixture met the requirement of specification. The tensile strain of mixture SR15 was lower than the requirement for the asphalt mixtures on the basis of the specification. For the SBS/RHA‐modified asphalt binder based on the comprehensive properties, the content of rice husk ash should not be higher than 15%.
Significance of “Time below Range” as a Glycemic Marker Derived from Continuous Glucose Monitoring in Japanese Children and Adolescents with Type 1 Diabetes
Authors: Urakami Tatsuhiko , Yoshida Kei , Kuwabara Remi , Mine Yusuke , Aoki Masako , Suzuki Junichi , Morioka Ichiro
Published: September 2020

Introduction: We evaluated the frequencies of various glycemic markers derived from continuous glucose monitoring in Japanese children and adolescents with type 1 diabetes and assessed the significance of hypoglycemia duration. Methods: We enrolled 85 children and adolescents (36 boys and 49 girls) with type 1 diabetes who used FreeStyle® Libre in the present study. Frequencies of blood glucose levels as time within target range (TIR; 70–180 mg/dL), time below target range (TBR; <70 mg/dL), time below extreme hypoglycemia range (TBER; <54 mg/dL), and time above range (TAR; >180 mg/dL) were assessed during a 3-month study period. Furthermore, we evaluated the intraday frequencies of TBR and TBER. Results: The mean frequencies of TIR, TBR, and TAR were 52.7 ± 11.3%, 10.8 ± 5.4%, and 36.5 ± 10.8%, respectively, whereas the mean frequency of TBER was 1.1 ± 0.9% (0–3.0%); there was no clinical episode of severe hypoglycemia. The mean frequency of TBR was significantly greater in 0–6 h (16.9 ± 5.2%) than in 6–12 h (7.8 ± 2.9%) and 18–24 h (6.8 ± 4.8%; p < 0.01) time zones, respectively. Discussion/Conclusion: We found similar TIR and comparatively higher TBR frequencies, particularly during sleep, than those that were previously reported. Possible reasons for the higher frequency of TBR include differences in the quality of insulin treatment and diabetes care between the present study and the European studies. The utilization of advanced technologies, such as a predictive low-glucose suspend-function pump or closed-loop therapy, can reduce the frequency of TBR, with a consequent increase in TIR frequency and comprehensive improvement in glycemic control.
A busca do impossível
Authors: Rodrigues Júlia Cardoso
Published: September 2020

Quando a tarefa é transpor para a língua de chegada uma cultura que ainda é considerada exótica e distante, o tradutor precisa tomar algumas decisões que parecem simples a princípio, mas não o são. Pensando nisso, o presente artigo pretende levantar a discutir alguns pontos relevantes no processo de tradução do conto “Uma Mulher Solitária”, do sírio Zakariyya Tāmir.
Um ghul dentro do peito
Authors: Aprigliano Adriano
Published: September 2020

Em “O Infeliz”, Almankūd, do escritor jordaniano ‘Abd Arraḥmān Munīf (1933-2004), o narrador resgata suas memórias de criança sobre o tio beduíno. Subjacente ao relato familiar, revela-se uma perspectiva contundente sobre o conflito entre a vida urbana moderna e o tradicional nomadismo das regiões desérticas do Oriente Médio. Apresento aqui a primeira tradução desse conto para o português brasileiro. Nas notas à tradução, comento particularidades do árabe literário e minhas soluções em português. Na introdução, sumarizo a vida e a obra do autor, bem como a estrutura e os temas centrais de “O infeliz”.
Para além do pão nu
Authors: Francisco Felipe Benjamin
Published: September 2020

Este artigo propõe uma tradução à língua portuguesa do conto Na‘l annabiyy, “A sandália do Profeta Maomé”, de Mohamed Choukri. Trata-se da primeira tradução ao português de um trabalho do escritor marroquino feita diretamente do árabe. Pretende-se, assim, reaproximar o leitor brasileiro a um ilustre nome do panorama literário do Marrocos, revelando-lhe seu lado contista. O texto estrutura-se em três partes: i) apresentação do perfil de Choukri e seu estilo; ii) discussão geral sobre as decisões tradutórias adotadas; e iii) tradução do conto acompanhada de seu original árabe.
Olhares e chineladas
Authors: Criado Pedro Martins
Published: September 2020

Este artigo apresenta uma tradução nossa, feita do árabe ao português, do conto Naḍra lahā ’aṣābi‘, “Os dedos do olhar”, da escritora kuaitiana Leila Othman. Ao início, acrescentamos uma breve apresentação da autora e do conto, além de comentários sobre decisões tradutórias referentes a características que criam a atmosfera de suspense e estranhamento.
O que ele não deve saber dela
Authors: Alves Jemima De Souza
Published: September 2020

O presente trabalho apresenta a tradução do conto Lā yanbaġī ’an ya‘rifa arrajul bihāḏā, “O homem não deve saber disso”, da escritora libanesa Hanan Al-Shaykh, feita do árabe ao português brasileiro. Discute brevemente nuances da tradução de uma narrativa caracterizada pelo fluxo de consciência. Figurando entre as escritoras mais importantes do renascimento do romance árabe libanês, Al-Shaykh, nesse conto, através de sua escrita marcada pela sensualidade, permite que sua audiência penetre o universo de uma mulher anônima e participe da experiência que tem com sua própria intimidade.
Folhas dispersas das oliveiras
Authors: Chareti Alexandre
Published: September 2020

Este artigo apresenta a tradução para o português brasileiro de alguns poemas dos palestinos Jabra Ibrahim Jabra e Mahmud Darwich, aborda questões relativas aos procedimentos técnicos da tradução e faz uma reflexão sobre as decisões de tradução necessárias à transposição de sistemas linguísticos distintos entre si.
Mão na massa! A prática da tradução coletiva
Authors: Sleiman Michel , Jubran Safa
Published: September 2020

Este artigo faz uma reflexão sobre a teoria e a prática que nortearam até agora as atividades do “Grupo de tradução da poesia árabe contemporânea” e do grupo de pesquisa “Tarjama: escola de tradutores de literatura árabe moderna”, desenvolvidos no âmbito do Curso de Letras da FFLCH-USP. O artigo reflete sobre as atividades da oficina de tradução literária como parte do processo de ensino e aprendizagem da língua e da literatura árabes. Para isso, sonda a ação pedagógica no processo de ensino e aprendizagem de língua estrangeira via a tradução individual, a tradução coletiva e a retradução.
A poesia de resistência das mulheres palestinas
Authors: Costa Renata
Published: September 2020

Neste artigo propomos uma tradução de poemas escritos por duas mulheres destacadas da poesia palestina: Fadwa Tuqan (1919-2003) e Salma Jayyusi (1926-). A tradução levou em conta as questões formais e semânticas pertinentes ao gênero em poemas que evidenciam o papel de resistência feminina no contexto das sociedades patriarcais palestina e israelense. Os poemas de Tuqan são “O dilúvio e a Árvore”, “Junto ao seio dela” e “A previsão do oráculo” e de Jayyusi são “Cartum” e “Bagdadíadas”.
Poesia como expressão de solidariedade nacional e consciência política
Authors: Gemignani Beatriz Negreiros
Published: September 2020

Neste artigo, traduzimos poemas dos poetas palestinos Tawfiq Zayyad (1929-1994), Ahmad Dahbur (1946-2017) e Khairi Mansur (1945-2018). A tradução busca preservar os sentidos originais dos poemas ao mesmo tempo em que se propõe poética, para que o resultado sejam poemas também em português. Os poemas trazem imagens da resistência palestina, na forma da permanência no território palestino ocupado ou na nota que destaca a opressão nos países do exílio. Ao mesmo tempo em que fazem o leitor sentir a solidão e a privação, acentuam o amor e a fé encorajante desse povo.
Entre a ironia e o trágico
Authors: Montecinos William Diego
Published: September 2020

Este artigo medita sobre o verso árabe moderno buscado em nossa tradução ao português brasileiro às vezes menos colada à literalidade e mais atenta a tons de expressão do vernáculo. Traduzem-se os poemas “As tribos”, “Guardas” e “Um oficial”, do poeta palestino Mourid Barghouti (1944-), e dos poemas “Você sabe o quanto te amamos”, “Não é culpa sua” e “Morcegos”, do também palestino Samih Alqasim (1939-2014).
A expressão do absurdo existencial
Authors: Gemignani Beatriz Negreiros
Published: September 2020

Escritor consagrado da literatura egípcia moderna, Yūsuf Idrīs retrata tanto a realidade de seu tempo em produções de cunho social quanto um mundo absurdo em autorreflexão e busca existencial. Este último caracteriza o seu conto “A viagem” aqui apresentado, cuja tradução pretende refletir os absurdos do original em assunto, ritmo e estilo narrativo. Logo, a tradução do conto manteve construções árabes pouco comuns, como o uso de ordem sintática invertida (com o verbo no final da sentença), a repetição de palavras e expressões, o uso recorrente da reticência e a preferência de orações coordenadas a subordinadas. Outro aspecto complexo da tradução são os coloquialismos egípcios, usados pelo narrador para se dirigir a diferentes personagens de forma depreciativa e satírica, e que buscou-se traduzir por coloquialismos de sentidos e usos semelhantes em língua portuguesa.
Fortes herodianos: reflexos de práticas políticas na paisagem
Authors: Rodrigues Gabriela
Published: September 2020

O presente artigo busca discutir temas referentes aos usos políticos da paisagem arquitetônica, por meio da análise das possíveis intencionalidades por trás dos fortes Herodianos. Como tais fortes haviam pertencido anteriormente aos Hasmoneus e foram, em sua maioria, reconstruídos por Herodes Magno, intentamos investigar se houve obliteração intencional do poderio Hasmoneu por Herodes através do uso da monumentalide, ou se alguma outra motivação levou ao reuso e modificação desses locais. Para tanto, dialogaremos com fontes documentais primárias e fontes arqueológicas.