bluuebunny/crossref_metadata_2025 huggingface dataset:
Genetic diversity of giant reed (Arundo donax) in Australia
Authors: Malone Jenna M. , Virtue John G. , Williams Chris , Preston Christopher
Published: March 2017

The perennial grass, Arundo donax, has shown potential as a promising biomass crop. However, it has become invasive in a number of areas and declared a noxious weed in some jurisdictions, making proposals to grow A. donax for commercial use in Australia controversial. Evidence of asexual reproduction and the presence of a single genetic clone in Australia was investigated, as such characteristics would indicate a limited risk of escape and invasion. Using amplified fragment length polymorphism markers, the genetic diversity of 218 A. donax samples from across Australia was examined. The samples were found to separate into two distinct genetic groups, or clades. There was only a small amount of genetic diversity within a clade (0.9 and 1.5%). However, there was a larger difference between the clades of 19.8%, suggesting the presence of two distinct A. donax genotypes in Australia. The low level of genetic variation in Australian A. donax that was found in this study indicates that spread is essentially by vegetative means and suggests that if grown in areas where it is separated from natural water dispersal events, A. donax poses a low risk of becoming invasive.
La Oficina del Historiador de La Habana al rescate del patrimonio bibliográfico
Authors: Terrón Quintero Grisel
Published: March 2017

La Oficina del Historiador de la ciudad de La Habana constituye, desde su fundación en 1938, una institución de vanguardia capaz de mostrar una obra cultural y social que trasciende su espacio geográfico y jurídico. Desde sus inicios la Oficina del Historiador ensayó variantes novedosas que facilitaron el rescate del patrimonio. El “período especial”, iniciado en los años noventa, reconfiguró las potestades del Historiador y su Oficina para garantizar un espacio de innovación que pusiera a salvo la cultura y el patrimonio. El trabajo analiza las alternativas empleadas para rescatar, preservar y difundir el patrimonio bibliográfico a partir de los años noventa.
Poética de la descivilización
Authors: Jurado Velasco Rodrigo Geovanny , Landy Guamán Carmen Enriqueta
Published: March 2017

La escultura pública se edifica para civilizar el discurso del poder. En su intento por educar a la población en el respeto al orden establecido, el poder constituido pone en marcha, de manera sistemática, varios dispositivos: la ocupación del espacio público, la exaltación a la imagen, la alusión a la memoria cívica. Así, la escultura del escritor ecuatoriano, Juan Montalvo (Ambato, Ecuador, 1832-1889), ha servido para establecer una fuerte conexión con uno de los “héroes” del pasado, cuya memoria ha servido para construir gran parte de la historia local contemporánea. Sin embargo, en los últimos años, la escultura ha sufrido varias agresiones. Las autoridades se han limitado a clasificarlas como “hechos delictivos”, y no se han analizado o estudiado estos acontecimientos. Este artículo de reflexión, por tanto, plantea la pregunta: ¿Qué narra la agresión al conjunto escultórico de Montalvo? Para contestarla, presenta una lectura de la agresión en el contexto cultural actual que atraviesan la ciudad y sus habitantes. Su argumento es que el proyecto civilizatorio del poder constituido enfrenta gestos contestatarios que, lejos de ser negativos, pueden abrir la puerta a la inclusión de voces disidentes en la narración de su propia historia pública
EL PATRIMONIO TERRITORIAL COMO MIRADA INTEGRADA DEL AMBIENTE. Análisis del frente fluvial metropolitano de Rosario
Authors: Galimberti Cecilia Inés
Published: March 2017

En la presente investigación se plantea que las miradas parciales del patrimonio fragmentan y sectorizan el enorme potencial de la identidad territorial que liga y unifica. El patrimonio cultural constituye un recurso no renovable del ambiente, por lo cual se propone su revalorización y protección a través de una lectura integrada de los componentes presentes en él. A través de un análisis crítico-interpretativo se toma como caso de estudio el frente fluvial metropolitano de Rosario (Argentina), a fin de comprender la importancia del patrimonio territorial al ser abordado en su conjunto. Para que la protección y valorización de las huellas existentes sean exitosas, deben ser objeto de la acción colectiva y estar activamente comprometidas tanto con el pasado de la comunidad como también dar respuesta a sus necesidades actuales. De este modo, se propone que las intervenciones patrimoniales por realizar en cada territorio deben mantener una perspectiva que supere los límites jurisdiccionales geográficos, los temporales y los construidos por el hombre, a fin de realizar acciones atentas a la identidad del lugar y no con el mero fin de atraer el turismo o potenciar las plusvalías del mercado.
Thermomechanical Analysis of Transient Temperatures in a Radial Turbine Wheel
Authors: Diefenthal Mathias , Łuczyński Piotr , Rakut Christian , Wirsum Manfred , Heuer Tom
Published: March 2017

In turbomachinery design, the accurate prediction of the life cycle is one of the most challenging issues. Traditionally, life cycle calculations for radial turbine wheels of turbochargers focus on mechanical loads such as centrifugal and vibration forces. Due to the increase of exhaust gas temperatures in the last years, thermomechanical fatigue in the turbine wheel came more into focus. In order to account for the thermally induced stresses in the turbine wheel as a part of the standard design process, a fast method is required for predicting metal temperatures. In order to develop a suitable method, the mechanisms that cause the thermal stresses have to be understood. Thus, in a first step, a detailed analysis of the temperature fields is conducted in the present paper. Extensive numerical simulations of a thermal shock process are carried out and validated by experimental data from a test rig. Based on the results, the main heat transfer mechanisms are identified, which are crucial for the critical thermal stresses in transient operation. It is shown that these critical stresses mainly depend on local 3D flow structures. With this understanding, two fast methods to calculate the transient temperatures in a radial turbine were developed. The first method is based on a standard method for transient fluid/solid heat transfer. In this standard method, heat transfer coefficients are derived from steady-state computational fluid dynamics (CFD)/conjugate heat transfer (CHT) calculations and are linearly interpolated over the duration of the transient heating or cooling process. In the new method, this interpolation procedure was modified to achieve an exponential behavior of the heat transfer coefficients over the transient process in order to enable a sufficient accuracy. Additionally, a second method was developed. In this method, the specific heat capacity of the solid state is reduced by a “speed up factor” to shorten the duration of the transient heating or cooling process. With the shortened processes, the computing times can be reduced significantly. After the calculations, the resulting times are transferred into realistic heating or cooling times by multiplying them with the speed up factor. The results of both methods are evaluated against experimental data and against the results of a numerical method known from literature. The methods show a good agreement with those data.
Dicarboxylic acids analysed by x-ray photoelectron spectroscopy, Part III - pentanedioic acid anhydrous
Authors: Ferreira, Josè M. , Trindade Gustavo F. , Tshulu Rene , Watts John F. , Baker Mark A.
Published: March 2017

X-ray photoelectron spectroscopy(XPS) was carried out to analyse a commercially available pentanedioic acidpowder.XPSspectra were obtained using incident monochromatic Al Kα radiation at 1486.6 eV. A survey spectrum together with O 1s and C 1s core level spectra are presented.
Fatty acids penetration into human skin ex vivo: A TOF-SIMS analysis approach
Authors: Čižinauskas Vytis , Elie Nicolas , Brunelle Alain , Briedis Vitalis
Published: March 2017

Linoleic, oleic, palmitoleic, palmitic, and stearic fatty acids (FAs) are commonly used in dermatological formulations. They differ by their structure, presence in the skin, and mode of application in pharmaceuticals and cosmetics compounding. These FAs are also known as chemical penetration enhancers, but their mechanisms of penetration enhancement and effect on barrier characteristics of the skin require additional study. In this study, the authors conducted an ex vivo analysis of the distribution of lipid components in the epidermis and dermis of human skin after applying individual FAs. The goal was to elucidate possible mechanisms of penetration enhancement and FA effects on barrier characteristics of the skin. FA penetration studies were conducted ex vivo on human skin and time-of-flight secondary ion mass spectrometry (TOF-SIMS) bioimaging analysis was performed to visualize and analyze distribution of FAs in skin sections. The current study demonstrated that TOF-SIMS imaging was effective in visualizing the distribution of linoleic, oleic, palmitoleic, palmitic, and stearic acid in the human skin ex vivo after the skin penetration experiment of individual FAs. The integration of the obtained TOF-SIMS images allowed a semiquantitative comparison of the effects induced by individual FA applications on the human skin ex vivo. FAs showed varying abilities to penetrate the skin and disorder the FAs within the skin, based on their structures and physicochemical properties. Linoleic acid penetrated the skin and changed the distribution of all the analyzed FAs. Skin treatment with palmitoleic or oleic acid increased the amounts of singular FAs in the skin. Penetration of saturated FAs was low, but it increased the detected amounts of linoleic acid in both skin layers. The results indicate that application of FAs on the skin surface induce redistribution of native FAs not only in the stratum corneum layer of epidermis but also in the lipid content of full epidermis and dermis layers. The results indicate that topically applied pharmaceutical products should be evaluated for potential chemical penetration enhancement and lipid component redistribution effects during formulation.
A point-based scattering model for the incoherent component of the scattered field
Authors: Brown Daniel C. , Johnson Shawn F. , Olson Derek R.
Published: March 2017

A numerical model for calculation of the incoherent component of the field scattered from random rough surfaces is described. This model is based on the point scattering approach, where the mean scatterer amplitudes are calculated from deterministic models. These amplitudes are then scaled by a complex circular Gaussian random variable to simulate scattering from a surface with minimal coherence length. The resulting simulated fields are shown to agree with theory for the mean field, mean square field, statistical distribution, and the spatial coherence length.
Speech based transmission index for all: An intelligibility metric for variable hearing ability
Authors: Mechergui Nader , Djaziri-Larbi Sonia , Jaïdane Mériem
Published: March 2017

A method to measure the speech intelligibility in public address systems for normal hearing and hearing impaired persons is presented. The proposed metric is an extension of the speech based Speech Transmission Index to account for accurate perceptual masking and variable hearing ability: The sound excitation pattern generated at the ear is accurately computed using an auditory filter model, and its shapes depend on frequency, sound level, and hearing impairment. This extension yields a better prediction of the intensity of auditory masking which is used to rectify the modulation transfer function and thus to objectively assess the speech intelligibility experienced by hearing impaired as well as by normal hearing persons in public spaces. The proposed metric was developed within the framework of the European Active and Assisted Living research program, and was labeled “SB-STI for All.” Extensive subjective in-Lab and in vivo tests have been conducted and the proposed metric proved to have a good correlation with subjective intelligibility scores.
Second-order cone programming with probabilistic regularization for robust adaptive beamforming
Authors: Guo Xijing , Miron Sebastian , Yang Yixin , Yang Shi'e
Published: March 2017

Probabilistic regularization (PR) is introduced to make superdirective array beamforming robust against sensor characteristic mismatches. The objective is to enlarge the directivity while ensuring robustness with high probability. The PR problem is solved via the second-order cone programming where the regularization parameter is chosen through a statistical analysis of the system perturbations, based on Monte Carlo simulations. Experiments are carried out on a miniaturized 3 × 3 uniform rectangular array without calibration. The results show that for this particular array, the PR method is robust to sensor mismatches and achieves a higher level of directivity compared with other robust adaptive beamforming approaches.
Effects of environmental warming during early life history on libellulid odonates
Authors: Frances D.N. , Moon J.Y. , McCauley S.J.
Published: March 2017

Climate warming affects ectotherms globally, yet we know little regarding the variability in species’ responses to warming, particularly in early life stages. Additionally, intraspecific variation in response to warming is understudied but may determine species’ resilience to warming. To assess how temperature affects egg development rate in co-occurring dragonfly species, we manipulated temperature (range: 22–31 °C) and measured time to hatching. Warming decreased egg development time across all species, indicating that while climate warming will advance hatching phenology, maintained synchrony in hatching order will likely not affect species interactions. Our second experiment examined early life-history responses to warming in the dot-tailed whiteface (Leucorrhinia intacta (Hagen, 1861)) dragonfly. We measured time to hatching, hatchling size, growth rate, and survival at four temperatures (23–30 °C), including a treatment with increased thermal variation. Warming resulted in smaller hatchlings with increased growth and mortality rates, whereas higher thermal variation did not have effects different from those of warming alone. We observed significant intraspecific variation in the responses to warming in both egg development time and hatchling size and this variation was correlated with date of oviposition. High levels of intraspecific variation may be important in buffering populations from the effects of climate warming.
FUNCTIONAL ANALYTIC (IR-)REGULARITY PROPERTIES OF SABR-TYPE PROCESSES
Authors: DÖRING LEIF , HORVATH BLANKA , TEICHMANN JOSEF
Published: March 2017

The stochastic alpha, beta, rho (SABR) model is a benchmark stochastic volatility model in interest rate markets, which has received much attention in the past decade. Its popularity arose from a tractable asymptotic expansion for implied volatility, derived by heat kernel methods. As markets moved to historically low rates, this expansion appeared to yield inconsistent prices. Since the model is deeply embedded in the markets, alternative pricing methods for SABR have been addressed in numerous approaches in recent years. All standard option pricing methods make certain regularity assumptions on the underlying model, but for SABR, these are rarely satisfied. We examine here regularity properties of the model from this perspective with a view to a number of (asymptotic and numerical) option pricing methods. In particular, we highlight delicate degeneracies of the SABR model (and related processes) at the origin, which deem the currently used popular heat kernel methods and all related methods from (sub-) Riemannian geometry ill-suited for SABR-type processes, when interest rates are near zero. We describe a more general semigroup framework, which permits to derive a suitable geometry for SABR-type processes (in certain parameter regimes) via symmetric Dirichlet forms. Furthermore, we derive regularity properties (Feller properties and strong continuity properties) necessary for the applicability of popular numerical schemes to SABR-semigroups and identify suitable Banach and Hilbert spaces for these. Finally, we comment on the short-time and large time asymptotic behavior of SABR-type processes beyond the heat-kernel framework.
Non-Equilibrium Phase Transitions Induced by Social Temperature In Kinetic Exchange Opinion Models on Regular Lattices
Authors: Crokidakis Nuno
Published: March 2017

In this work, we study the critical behavior of a three-state opinion model in the presence of noise. This noise represents the independent behavior, that plays the role of social temperature. Each agent on a regular [Formula: see text]-dimensional lattice has a probability [Formula: see text] to act as independent, i.e., he can choose his opinion independent of the opinions of his neighbors. Furthermore, with the complementary probability [Formula: see text], the agent interacts with a randomly chosen nearest neighbor through a kinetic exchange. Our numerical results suggest that the model undergoes non-equilibrium phase transitions at critical points [Formula: see text] that depend on the lattice dimension. These transitions are of order–disorder type, presenting the same critical exponents of the Ising model. The results also suggest that the upper critical dimension of the model is [Formula: see text], as for the Ising model. From the social point of view, with increasing number of social connections, it is easier to observe a majority opinion in the population.
A Library for Portable and Composable Data Locality Optimizations for NUMA Systems
Authors: Majo Zoltan , Gross Thomas R.
Published: March 2017

Many recent multiprocessor systems are realized with a nonuniform memory architecture (NUMA) and accesses to remote memory locations take more time than local memory accesses. Optimizing NUMA memory system performance is difficult and costly for three principal reasons: (1) Today’s programming languages/libraries have no explicit support for NUMA systems, (2) NUMA optimizations are not portable, and (3) optimizations are not composable (i.e., they can become ineffective or worsen performance in environments that support composable parallel software).

This article presents TBB-NUMA, a parallel programming library based on Intel Threading Building Blocks (TBB) that supports portable and composable NUMA-aware programming. TBB-NUMA provides a model of task affinity that captures a programmer’s insights on mapping tasks to resources. NUMA-awareness affects all layers of the library (i.e., resource management, task scheduling, and high-level parallel algorithm templates) and requires close coupling between all these layers. Optimizations implemented with TBB-NUMA (for a set of standard benchmark programs) result in up to 44% performance improvement over standard TBB. But more important, optimized programs are portable across different NUMA architectures and preserve data locality also when composed with other parallel computations sharing the same resource management layer.
Evaluation of Self-Friction Three-Center Nuclear Attraction Integrals with Integer and Noninteger Principal Quantum Numbersnover Slater Type Orbitals
Authors: Çopuroğlu Ebru
Published: March 2017

We have proposed a new approach to evaluate self-friction (SF) three-center nuclear attraction integrals over integer and noninteger Slater type orbitals (STOs) by using Guseinov one-range addition theorem in standard convention. A complete orthonormal set of Guseinovψαexponential type orbitals (ψα-ETOs,α=2,1,0,-1,-2,…) has been used to obtain the analytical expressions. The overlap integrals with noninteger quantum numbers occurring in SF three-center nuclear attraction integrals have been evaluated usingQnsqauxiliary functions. The accuracy of obtained formulas is satisfactory for arbitrary integer and noninteger principal quantum numbers.
Efficient Realization of BCD Multipliers Using FPGAs
Authors: Gao Shuli , Al-Khalili Dhamin , Langlois J. M. Pierre , Chabini Noureddine
Published: March 2017

In this paper, a novel BCD multiplier approach is proposed. The main highlight of the proposed architecture is the generation of the partial products and parallel binary operations based on 2-digit columns. 1 × 1-digit multipliers used for the partial product generation are implemented directly by 4-bit binary multipliers without any code conversion. The binary results of the 1 × 1-digit multiplications are organized according to their two-digit positions to generate the 2-digit column-based partial products. A binary-decimal compressor structure is developed and used for partial product reduction. These reduced partial products are added in optimized 6-LUT BCD adders. The parallel binary operations and the improved BCD addition result in improved performance and reduced resource usage. The proposed approach was implemented on Xilinx Virtex-5 and Virtex-6 FPGAs with emphasis on the critical path delay reduction. Pipelined BCD multipliers were implemented for 4 × 4, 8 × 8, and 16 × 16-digit multipliers. Our realizations achieve an increase in speed by up to 22% and a reduction of LUT count by up to 14% over previously reported results.
Factors Predicting Renal Function Outcome after Augmentation Cystoplasty
Authors: Mehmood Shahbaz , Seyam Raouf , Firdous Sadia , Altaweel Waleed Mohammad
Published: March 2017

We determined the cause of renal deterioration after augmentation cystoplasty (AC). Twenty-nine adult patients with refractory bladder dysfunction and who underwent ileocystoplasty from 2004 to 2015 were studied. Patients with a decline in glomerular filtration rate (GFR) after augmentation were reviewed. The primary outcome was to determine the factors that might lead to deterioration of estimated GFR. Median follow-up was7.0±2.6years. Significant bladder capacity, end filling pressure, and bladder compliance were achieved from median114±53.6to342.1±68.3 ml (p=.0001),68.5±19.9to28.2±6.9 cm H2O (p=.0001), and3.0±2.1to12.8±3.9(p=.0001), respectively. Renal function remained stable and improved in 22 (76%) patients from median eGFR135±81.98to142.82±94.4 ml/min/1.73 m2(p=.160). Significant deterioration was found in 7 (24%) patients from median eGFR68.25±42to36.57±35.33(p=.001). The causes of renal deterioration were noncompliance to self-catheterization (2 patients), posterior urethral valve/dysplastic kidneys (2 patients), and reflux/infection (2 patients). On multivariate analysis, recurrent pyelonephritis (OR 3.87,p=0.0155) and noncompliance (OR 30.78,p=0.0156) were significant. We concluded that AC is not the cause of progression to end-stage renal disease in patients with renal insufficiency.
Mathematical Model and Algorithm for the Reefer Mechanic Scheduling Problem at Seaports
Authors: Zhang Jiantong , Song Yujian
Published: March 2017

With the development of seaborne logistics, the international trade of goods transported in refrigerated containers is growing fast. Refrigerated containers, also known as reefers, are used in transportation of temperature sensitive cargo, such as perishable fruits. This trend brings new challenges to terminal managers, that is, how to efficiently arrange mechanics to plug and unplug power for the reefers (i.e., tasks) at yards. This work investigates the reefer mechanics scheduling problem at container ports. To minimize the sum of the total tardiness of all tasks and the total working distance of all mechanics, we formulate a mathematical model. For the resolution of this problem, we propose a DE algorithm which is combined with efficient heuristics, local search strategies, and parameter adaption scheme. The proposed algorithm is tested and validated through numerical experiments. Computational results demonstrate the effectiveness and efficiency of the proposed algorithm.
Secreted Interferon-Inducible Factors Restrict Hepatitis B and C Virus Entry In Vitro
Authors: Xia Yuchen , Cheng Xiaoming , Blossey Christoph K. , Wisskirchen Karin , Esser Knud , Protzer Ulrike
Published: March 2017

Interferon-α(IFN-α) has been used for more than 20 years as the first-line therapy for hepatitis B virus (HBV) and hepatitis C virus (HCV) infection, because it has a number of antiviral effects. In this study, we describe a novel mode of its antiviral action. We demonstrate that the supernatant from IFN-α-treated cultured cells restricted HBV and HCV infection by inhibiting viral entry into hepatoma cells. The factors contained in the supernatant competed with the virus for binding to heparan glycosaminoglycans—the nonspecific attachment step shared by HBV and HCV. Secreted factors of high molecular mass that bind to heparin columns elicited the antiviral effect. In conclusion, IFN-αis able to induce soluble factors that can bind to heparan glycosaminoglycans thus leading to the inhibition of viral binding.
An Optimal Joint User Association and Power Allocation Algorithm for Secrecy Information Transmission in Heterogeneous Networks
Authors: Chai Rong , Chen Mingxue , Chen Qianbin , Gao Yuanpeng
Published: March 2017

In recent years, heterogeneous radio access technologies have experienced rapid development and gradually achieved effective coordination and integration, resulting in heterogeneous networks (HetNets). In this paper, we consider the downlink secure transmission of HetNets where the information transmission from base stations (BSs) to legitimate users is subject to the interception of eavesdroppers. In particular, we stress the problem of joint user association and power allocation of the BSs. To achieve data transmission in a secure and energy efficient manner, we introduce the concept of secrecy energy efficiency which is defined as the ratio of the secrecy transmission rate and power consumption of the BSs and formulate the problem of joint user association and power allocation as an optimization problem which maximizes the joint secrecy energy efficiency of all the BSs under the power constraint of the BSs and the minimum data rate constraint of user equipment (UE). By equivalently transforming the optimization problem into two subproblems, that is, power allocation subproblem and user association subproblem of the BSs, and applying iterative method and Kuhn-Munkres (K-M) algorithm to solve the two subproblems, respectively, the optimal user association and power allocation strategies can be obtained. Numerical results demonstrate that the proposed algorithm outperforms previously proposed algorithms.
Multidimensional Seismic Control by Tuned Mass Damper with Poles and Torsional Pendulums
Authors: He Haoxiang , Wang Wentao , Xu Honggang
Published: March 2017

Due to the eccentric characteristics and the torsional excitation of multidimensional earthquakes, the dynamic response of asymmetry structure involves the translation-torsion coupling vibration and it is adverse to structural performance. Although the traditional tuned mass damper (TMD) is effective for decreasing the translational vibration when the structure is subjected to earthquake, its translation-torsion coupled damping capacity is still deficient. In order to simultaneously control the translational responses and the torsional angle of asymmetry structures, a new type of tuned mass damper with tuned mass blocks, orthogonal poles, and torsional pendulums (TMDPP) is proposed. The translation-torsion coupled vibration is tuned by the movement of the mass blocks and the torsional pendulums. According to the composition and the motion mechanism of the TMDPP, the dynamic equation for the total system considering eccentric torsion effect is established. The damping capacity of the TMDPP is verified by the time history analysis of an eccentric structure, and multidimensional earthquake excitations are considered. The damping effect of the traditional TMD and the TMDPP is compared, and the results show that the performance of TMDPP is superior to the traditional TMD. Moreover, the occasional amplitude amplification in TMD control does not appear in the TMDPP control. The main design parameters which affect the damping performance of TMDPP are analyzed.
Structure Properties of Koch Networks Based on Networks Dynamical Systems
Authors: Zhai Yinhu , Liu Jia-Bao , Wang Shaohui
Published: March 2017

We introduce an informative labeling algorithm for the vertices of a family of Koch networks. Each label consists of two parts: the precise position and the time adding to Koch networks. The shortest path routing between any two vertices is determined only on the basis of their labels, and the routing is calculated only by few computations. The rigorous solutions of betweenness centrality for every node and edge are also derived by the help of their labels. Furthermore, the community structure in Koch networks is studied by the current and voltage characterizations of its resistor networks.
GA-ARMA Model for Predicting IGS RTS Corrections
Authors: Kim Mingyu , Kim Jeongrae
Published: March 2017

The global navigation satellite system (GNSS) is widely used to estimate user positions. For precise positioning, users should correct for GNSS error components such as satellite orbit and clock errors as well as ionospheric delay. The international GNSS service (IGS) real-time service (RTS) can be used to correct orbit and clock errors in real-time. Since the IGS RTS provides real-time corrections via the Internet, intermittent data loss can occur due to software or hardware failures. We propose applying a genetic algorithm autoregressive moving average (GA-ARMA) model to predict the IGS RTS corrections during data loss periods. The RTS orbit and clock corrections are predicted up to 900 s via the GA-ARMA model, and the prediction accuracies are compared with the results from a generic ARMA model. The orbit prediction performance of the GA-ARMA is nearly equivalent to that of ARMA, but GA-ARMA’s clock prediction performance is clearly better than that of ARMA, achieving a 32% error reduction. Predicted RTS corrections are applied to the broadcast ephemeris, and precise point positioning accuracies are compared. GA-ARMA shows a significant accuracy improvement over ARMA, particularly in terms of vertical positioning.
Predicting Inpatient Detoxification Outcome of Alcohol and Drug Dependent Patients: The Influence of Sociodemographic Environment, Motivation, Impulsivity, and Medical Comorbidities
Authors: Sofin Yvonne , Danker-Hopfe Heidi , Gooren Tina , Neu Peter
Published: March 2017

Aims. This prospective study aims to identify patient characteristics as predictors for treatment outcome during inpatient detoxification treatment for drug and alcohol dependent patients.Methods. A mixed gender sample of 832 consecutively admitted drug and alcohol dependent patients were interviewed by an experienced physician. The impact of a variety of factors concerning social environment, therapy motivation, impulsivity related variables, medical history, and addiction severity on treatment outcome was examined.Results. 525 (63.1%) of the patients completed detoxification treatment whereas 307 (36.9%) dropped out prematurely. Being female, living in a partnership, having children, being employed, and having good education were predictive for a positive outcome. Family, health, the fear of losing the job, prosecution, and emergency admission were significant motivational predictors for treatment outcome. Being younger, history of imprisonment, and the number of previous drop-outs were predictive for a negative outcome.Conclusions. Variables concerning social environment and the number of previous drop-outs have been identified as best predictors for treatment outcome. Socially stable patients benefit from the current treatment setting and treatment shall be adapted for patients with negative predictors. Treatment may consequently be tailored with respect to intervention type, duration, and intensity to improve the outcome for those patients that fulfil criteria with negative impact on treatment retention.
Antimicrobial Activity and Chemical Composition of “Kpètè-Kpètè”: A Starter of Benin Traditional Beer Tchoukoutou
Authors: N’tcha Christine , Sina Haziz , Kayodé Adéchola Pierre Polycarpe , Gbenou Joachim D. , Baba-Moussa Lamine
Published: March 2017

The aim of this study was to investigate the antibacterial effect of the crude starter “kpètè-kpètè” and lactic acid bacteria used during the production of “tchoukoutou.” To achieve this, a total of 11 lactic acid bacteria and 40 starter samples were collected from four communes. The samples were tested on 29 gram + and − strains by disk diffusion method. The minimum inhibitory and bactericidal concentrations of starter and lactic acid bacteria were determined by conventional methods. Organic acids, sugar, and volatile compounds were determined using the HPLC method. The “kpètè-kpètè” displays a high antibacterial activity against the tested strains. The most sensitive strain wasS. epidermidis(12.5 mm) whereas the resistance strain wasProteus mirabilis(8 mm). All the tested ferment has not any inhibitory effect onEnterococcus faecalis. The lactic acid bacteria isolates of Parakou showed the highest (17.48 mm) antibacterial activity whereas the smallest diameter was obtained with the ferment collected from Boukoumbé (9.80 mm). The starters’ chemical screening revealed the presence of tannins, anthocyanin flavonoids, triterpenes, steroids, reducing compounds, and mucilage O-glycosides. These compounds are probably the source of recorded inhibition effect. The lactic acid bacteria of the “kpètè-kpètè” could be used to develop a food ingredient with probiotic property.
Broadband Vertically/Horizontally Dual-Polarized Antenna for Base Stations
Authors: Cui YueHui , Gao XiaoNa , Li RongLin
Published: March 2017

A broadband vertically/horizontally (V/H) dual-polarized antenna is proposed for mobile communication base stations. The antenna consists of two perpendicularly placed broadband planar antenna elements. By shaping the reflector for V/H dual-polarized antenna, a half-power beam width of 65±8° is achieved for both vertical and horizontal polarization. The V/H dual-polarized antenna has a bandwidth of 48% (1.7–2.75 GHz) for return loss >15 dB, an isolation of 30 dB, and an antenna gain of 9 dBi. An 8-element V/H dual-polarized antenna array is developed, which achieves a bandwidth of 45% (1.7–2.7 GHz) and an antenna gain of 16 dBi, suitable for GSM/UMTS/LTE base stations.
Heavy Quark Potential with Hyperscaling Violation
Authors: Zhang Zi-qiang , Ma Chong , Hou De-fu , Chen Gang
Published: March 2017

We investigate the behavior of the heavy quark potential in the backgrounds with hyperscaling violation. The metrics are covariant under a generalized Lifshitz scaling symmetry with the dynamical Lifshitz parameter z and hyperscaling violation exponent θ. We calculate the potential for a certain range of z and θ and discuss how it changes in the presence of the two parameters. Moreover, we add a constant electric field to the backgrounds and study its effects on the potential. It is shown that the heavy quark potential depends on the nonrelativistic parameters. Also, the presence of the constant electric field tends to increase the potential.
Data-Driven Networked Optimal Iterative Learning Control for Discrete Linear Time-Varying Systems with One-Operation Bernoulli-Type Communication Delays
Authors: Geng Yan , Ruan Xiaoe , Ahn Hyo-Sung
Published: March 2017

This paper develops a type of data-driven networked optimal iterative learning control strategy for a class of discrete linear time-varying systems with one-operation Bernoulli-type communication delays. In terms of the stochastic Bernoulli-type one-operation communication delayed inputs and outputs, the previous-iteration synchronous compensations are adopted. By means of deriving gradients of two types of objective functions that express the optimal approximation of the system matrix and the minimal tracking error, the strategy approximates the system matrix and upgrades the control inputs in an interact mode as the iteration evolves. By taking advantage of matrix theory and statistical technique, it is derived that the approximation discrepancy of the system matrix is bounded and the mathematical expectation of the tracking error vanishes as the iteration goes on. Numerical simulations manifest the validity and effectiveness.
Gatekeeper Mutations and Intratumoral Heterogeneity inFGFR2-Translocated Cholangiocarcinoma
Authors: Smyth Elizabeth C. , Babina Irina S. , Turner Nicholas C.
Published: March 2017

Summary: FGFR2 genetic translocations are frequent in cholangiocarcinoma, yet despite initial sensitivity to FGFR inhibitors in clinic, patients quickly become resistant to targeted therapies. The work published by Goyal and colleagues demonstrates that acquisition of gatekeeper mutations in FGFR2 and intratumoral heterogeneity drive resistance in patients with FGFR2-translocated intrahepatic cholangiocarcinoma, which will have important implications for management of the disease in clinic. Cancer Discov; 7(3); 248–9. ©2017 AACR.

See related article by Goyal et al., p. 252.
Modular co-organization of functional connectivity and scale-free dynamics in the human brain
Authors: Zhigalov Alexander , Arnulfo Gabriele , Nobili Lino , Palva Satu , Palva J. Matias
Published: March 2017

Scale-free neuronal dynamics and interareal correlations are emergent characteristics of spontaneous brain activity. How such dynamics and the anatomical patterns of neuronal connectivity are mutually related in brain networks has, however, remained unclear. We addressed this relationship by quantifying the network colocalization of scale-free neuronal activity—both neuronal avalanches and long-range temporal correlations (LRTCs)—and functional connectivity (FC) by means of intracranial and noninvasive human resting-state electrophysiological recordings. We found frequency-specific colocalization of scale-free dynamics and FC so that the interareal couplings of LRTCs and the propagation of neuronal avalanches were most pronounced in the predominant pathways of FC. Several control analyses and the frequency specificity of network colocalization showed that the results were not trivial by-products of either brain dynamics or our analysis approach. Crucially, scale-free neuronal dynamics and connectivity also had colocalized modular structures at multiple levels of network organization, suggesting that modules of FC would be endowed with partially independent dynamic states. These findings thus suggest that FC and scale-free dynamics—hence, putatively, neuronal criticality as well—coemerge in a hierarchically modular structure in which the modules are characterized by dense connectivity, avalanche propagation, and shared dynamic states.
Large-scale network dynamics of beta-band oscillations underlie auditory perceptual decision-making
Authors: Alavash Mohsen , Daube Christoph , Wöstmann Malte , Brandmeyer Alex , Obleser Jonas
Published: March 2017

Perceptual decisions vary in the speed at which we make them. Evidence suggests that translating sensory information into perceptual decisions relies on distributed interacting neural populations, with decision speed hinging on power modulations of the neural oscillations. Yet the dependence of perceptual decisions on the large-scale network organization of coupled neural oscillations has remained elusive. We measured magnetoencephalographic signals in human listeners who judged acoustic stimuli composed of carefully titrated clouds of tone sweeps. These stimuli were used in two task contexts, in which the participants judged the overall pitch or direction of the tone sweeps. We traced the large-scale network dynamics of the source-projected neural oscillations on a trial-by-trial basis using power-envelope correlations and graph-theoretical network discovery. In both tasks, faster decisions were predicted by higher segregation and lower integration of coupled beta-band (∼16–28 Hz) oscillations. We also uncovered the brain network states that promoted faster decisions in either lower-order auditory or higher-order control brain areas. Specifically, decision speed in judging the tone sweep direction critically relied on the nodal network configurations of anterior temporal, cingulate, and middle frontal cortices. Our findings suggest that global network communication during perceptual decision-making is implemented in the human brain by large-scale couplings between beta-band neural oscillations.
Père Trump
Authors: Foster Hal
Published: March 2017

In the face of Trumpism and its peculiar mix of the buffoonish and the lethal, Foster suggests that we “pump up” past theoretical concepts by raising them to a higher degree. Social media, for example, could thereby be considered the “fifth estate,” a force that outdoes the “fourth estate” of journalistic media and thereby evacuates the last residues of the public sphere that, over fifty years ago, Jürgen Habermas associated with the advent of print culture. Peter Sloterdijk's notion of cynical reason, too, must be raised to a higher power in order to comprehend the Trumpist mentality; perhaps in this post-truth era, we should speak instead of “noncynical unreason”? And while the concept of the “primal father” is so outrageous that it cannot be inflated, Foster argues, it is one that we must grapple with in the face of a figure who, like Freud's figure, embodies the law and simultaneously performs its transgression.
Fake News, Art, and Cognitive Justice
Authors: Joselit David
Published: March 2017

David Joselit argues that although the politicization of information and fake news is nothing new—facts, after all, have always been ratified by power, and standards of evidence are historically specific—the mode of its authentication is now in crisis. He describes this condition as a state of cognitive conflict in which different species of knowledge battle one another for pre-eminence, rather than reach for an agonistic but productive political translation or negotiation. Adopting the concept of cognitive justice as theorized by Boaventura de Sousa Santos, Joselit proposes that under Trumpism art can be a resource for working out a politicized and materialized, even formal, theory of information. By tracking the plasticity of information—the shapes it assumes through circulation, shifts in scale and saturation, and its velocities and frictions—which is deeply enmeshed in relations of power, post-Conceptual art can have real purchase on cognitive justice.
Massage, c. 1966
Authors: Kitnick Alex
Published: March 2017

Tied to the body, the word “massage” in the mid-1960s was also associated with media, as well as the idea of mass manipulation. Framed through the work of the media theorist Marshall McLuhan and the artist Claes Oldenburg, this essay considers the intersections between media theory and body and performance art.
Sulawesi Onthophagus: seven new species in select groups (Coleoptera: Scarabaeidae: Scarabaeinae)
Authors: KRIKKEN J. , HUIJBREGTS J.
Published: March 2017

Eleven species in five small operational groups of the scarab genus Onthophagus Latreille, 1802 (Coleoptera: Scarabaeidae: Scarabaeinae) are treated, all from the Indonesian island of Sulawesi and nearby smaller islands. These groups are defined, and their species are keyed, described, and illustrated, including the following seven new species: Onthophagus bisscrutator (O. scrutator group); O. bongkudai (O. holosericus group); O. sopu (O. manguliensis group); O. hollowayi, O. seseba, and O. annulopunctatus (O. seseba group); and O. begoniophilus (O. deflexicollis group). Lectotypes are designated for Onthophagus scrutator Harold, 1877 and O. holosericus Harold, 1877.
Description of the first species of Gonadryinus Olmi (Hymenoptera, Dryinidae) from the Afrotropical region
Authors: GUGLIELMINO ADALGISA , OLMI MASSIMO , MARLETTA ALESSANDRO , SPERANZA STEFANO
Published: March 2017

Gonadryinus bicarinatus Olmi, Marletta, Guglielmino & Speranza, sp. nov., from Ranomafana National Park (Fianarantsoa Province, Madagascar) is described and illustrated. This represents the first record of Gonadryinus from the Afrotropical region. The genus was previously known only from the Neotropical region, where only one species, G. hansoni Olmi, 1991, is recorded. The new taxon is different from G. hansoni because of the palpal formula 5/3 (4/2 in G. hansoni), the occipital carina complete (incomplete in G. hansoni) and two longitudinal keels present on the dorsal surface of the metapectal-propodeal complex (no longitudinal keels in G. hansoni).
The Hydraenidae of Cuba (Insecta: Coleoptera) II: Morphology of preimaginal stages of six species and notes on their biology
Authors: DELER-HERNÁNDEZ ALBERT , DELGADO JUAN A.
Published: March 2017

Preimaginal stages of the six species of Hydraenidae presently known from Cuba were obtained by rearing adults in the laboratory. Eggs of Hydraena perkinsi Spangler, 1980, H. decui Spangler, 1980 and H. franklyni Deler-Hernández & Delgado, 2012 are described and illustrated for the first time. The first instar larva of Gymnochthebius fossatus (LeConte, 1855) is redescribed, adding some new remarkable morphological characters including what could be the first abdominal egg-burster reported for this family. All larval instars of H. perkinsi, H. guadelupensis Orchymont, 1923 and Ochthebius attritus LeConte, 1878 are described and illustrated for the first time, with a special emphasis on their chaetotaxy. The second instar larva of G. fossatus along with first and third instar larvae of H. decui and H. franklyni are also studied for the first time. The pupal morphology and vestiture of a species belonging to the genus Hydraena are described for the first time, based on the pupa of H. perkinsi. Biological notes for several preimaginal stages of the studied species are also given.
On the taxonomy of Korean jumping plant-lice (Hemiptera: Psylloidea)
Authors: CHO GEONHO , BURCKHARDT DANIEL , LEE SEUNGHWAN
Published: March 2017

The taxonomy of jumping plant-lice from South Korea is revised based on extensive, recently collected material and specimens preserved in several collections. Three species are described as new (Craspedolepta yongjungi, Cacopsylla baccatae and Cyamophila floribundae spp. nov.) and 11 species are recorded from South Korea for the first time (Aphalaridae 2, Homotomidae 1, Liviidae 1, Psyllidae 6, Triozidae 1). One genus and 13 species are synonymised, two species are removed from synonymy and two species are recombined. Comments on the taxonomy are provided and previous misidentifications are discussed.
Understanding Space Weather: Part III: The Sun’s Domain
Authors: Strong Keith , Viall Nicholeen , Schmelz Joan , Saba Julia
Published: March 2017

The Sun exports a continuous outflow of plasma into interplanetary space: the solar wind. The solar wind primarily comprises two components: high- and slow-speed flows. These move with velocities ranging from 200 to 800 km s-1 depending on the source of the particular flow. As well as its speed, the density, temperature, and even the composition of the solar wind change. Adding to its intrinsic variability, there are embedded transients resulting from flares and coronal mass ejections that further complicate its dynamics and space weather impacts. The solar wind interacts differently with each of the solar system objects it encounters based on their magnetic and atmospheric properties. Even more complex processes occur as the solar wind encounters the interstellar medium, at the outer boundaries of the Sun’s domain. The solar wind stretches to beyond 100 au (where 1 au ≡ 149 597 870 700 m) from the Sun, which means that Earth is essentially immersed in the very hot solar atmosphere, and that leads to many space weather impacts on life and society. The specific space weather impacts on Earth will be discussed in detail in the next two papers in this series.