bluuebunny/crossref_metadata_2025 huggingface dataset:
Preparation and Application of Conductive Textile Coatings Filled with Honeycomb Structured Carbon Nanotubes
Authors: Govaert Filip , Vanneste Myriam
Published: June 2014

Electrical conductive textile coatings with variable amounts of carbon nanotubes (CNTs) are presented. Formulations of textile coatings were prepared with up to 15 wt % of CNT, based on the solid weight of the binder. The binders are water based polyacrylate dispersions. The CNTs were mixed into the binder dispersion starting from a commercially available aqueous CNT dispersion that is compatible with the binder dispersion.
Coating formulations with variable CNT concentrations were applied on polyester and cotton woven and knitted fabrics by different textile coating techniques: direct coating, transfer coating, and screen printing. The coatings showed increasing electrical conductivity with increasing CNT concentration. The coatings can be regarded to be electrically conductive (sheet resistivity < 103 Ohm/sq) starting at 3 wt% CNT. The degree of dispersion of the carbon nanotubes particles inside the coating was visualized by scanning electron microscopy. The CNT particles form honeycomb structured networks in the coatings, proving a high degree of dispersion. This honeycomb structure of CNT particles is forming a conductive network in the coating leading to low resistivity values.
VO2Kinetics and Metabolic Contributions Whilst Swimming at 95, 100, and 105% of the Velocity atVO2 max
Authors: Sousa Ana C. , Vilas-Boas João P. , Fernandes Ricardo J.
Published: June 2014

A bioenergetical analysis of swimming at intensities near competitive distances is inexistent. It was aimed to compare the transientVO2kinetics responses and metabolic contributions whilst swimming at different velocities aroundVO2max⁡. 12 trained male swimmers performed (i) an incremental protocol to determine the velocity atVO2max⁡(vVO2max⁡) and (ii) three square wave exercises from rest to 95, 100, and 105% ofvVO2max⁡.VO2was directly measured using a telemetric portable gas analyser and its kinetics analysed through a double-exponential model. Metabolic contributions were assessed through the sum of three energy components. No differences were observed in the fast component response (τ1—15, 18, and 16 s,A1—36, 34, and 37 mL·kg-1·min⁡-1, and Gain—32, 29, and 30 mL·min⁡-1at 95, 100, and 105% of thevVO2max⁡, resp.) but A2 was higher in 95 and 100% compared to 105% intensity (480.76 ± 247.01, 452.18 ± 217.04, and 147.04 ± 60.40 mL·min⁡-1, resp.). The aerobic energy contribution increased with the time sustained (83 ± 5, 74 ± 6, and 59 ± 7% for 95, 100, and 105%, resp.). The adjustment of the cardiovascular and/or pulmonary systems that determineO2delivery and diffusion to the exercising muscles did not change with changing intensity, with the exception ofVO2slow component kinetics metabolic profiles.
Bipartite Consensus Control of Multiagent Systems on Coopetition Networks
Authors: Hu Jiangping
Published: June 2014

Cooperation and competition are two typical interactional relationships in natural and engineering networked systems. Some complex behaviors can emerge through local interactions within the networked systems. This paper focuses on the coexistence of competition and cooperation (i.e., coopetition) at the network level and, simultaneously, the collective dynamics on such coopetition networks. The coopetition network is represented by a directed signed graph. The collective dynamics on the coopetition network is described by a multiagent system. We investigate two bipartite consensus strategies for multiagent systems such that all the agents converge to a final state characterized by identical modulus but opposite sign. Under a weak connectivity assumption that the coopetition network has a spanning tree, some sufficient conditions are derived for bipartite consensus of multiagent systems with the help of a structural balance theory. Finally, simulation results are provided to demonstrate the bipartite consensus formation.
Sparse Representation of Transients Based on Wavelet Basis and Majorization‐Minimization Algorithm for Machinery Fault Diagnosis
Authors: Fan Wei , Cai Gaigai , Huang Weiguo , Shang Li , Zhu Zhongkui
Published: June 2014

Vibration signals captured from faulty mechanical components are often associated with transients which are significant for machinery fault diagnosis. However, the existence of strong background noise makes the detection of transients a basis pursuit denoising (BPD) problem, which is hard to be solved in explicit form. With sparse representation theory, this paper proposes a novel method for machinery fault diagnosis by combining the wavelet basis and majorization‐minimization (MM) algorithm. This method converts transients hidden in the noisy signal into sparse coefficients; thus the transients can be detected sparsely. Simulated study concerning cyclic transient signals with different signal‐to‐noise ratio (SNR) shows that the effectiveness of this method. The comparison in the simulated study shows that the proposed method outperforms the method based on split augmented Lagrangian shrinkage algorithm (SALSA) in convergence and detection effect. Application in defective gearbox fault diagnosis shows the fault feature of gearbox can be sparsely and effectively detected. A further comparison between this method and the method based on SALSA shows the superiority of the proposed method in machinery fault diagnosis.
Matrix Transformations between Certain Sequence Spaces over the Non-Newtonian Complex Field
Authors: Kadak Uğur , Efe Hakan
Published: June 2014

In some cases, the most general linear operator between two sequence spaces is given by an infinite matrix. So the theory of matrix transformations has always been of great interest in the study of sequence spaces. In the present paper, we introduce the matrix transformations in sequence spaces over the fieldC*and characterize some classes of infinite matrices with respect to the non-Newtonian calculus. Also we give the necessary and sufficient conditions on an infinite matrix transforming one of the classical sets overC*to another one. Furthermore, the concept for sequence-to-sequence and series-to-series methods of summability is given with some illustrated examples.
On the Inverse EEG Problem for a 1D Current Distribution
Authors: Dassios George , Fragoyiannis George , Satrazemi Konstantia
Published: June 2014

Albanese and Monk (2006) have shown that, it is impossible to recover the support of a three-dimensional current distribution within a conducting medium from the knowledge of the electric potential outside the conductor. On the other hand, it is possible to obtain the support of a current which lives in a subspace of dimension lower than three. In the present work, we actually demonstrate this possibility by assuming a one-dimensional current distribution supported on a small line segment having arbitrary location and orientation within a uniform spherical conductor. The immediate representation of this problem refers to the inverse problem of electroencephalography (EEG) with a linear current distribution and the spherical model of the brain-head system. It is shown that the support is identified through the solution of a nonlinear algebraic system which is investigated thoroughly. Numerical tests show that this system has exactly one real solution. Exact solutions are analytically obtained for a couple of special cases.
Mathematical Modeling for Lateral Displacement Induced by Wind Velocity Using Monitoring Data Obtained from Main Girder of Sutong Cable‐Stayed Bridge
Authors: Wang Gao-Xin , Ding You-Liang
Published: June 2014

Based on the health monitoring system installed on the main span of Sutong Cable‐Stayed Bridge, GPS displacement and wind field are real‐time monitored and analyzed. According to analytical results, apparent nonlinear correlation with certain discreteness exists between lateral static girder displacement and lateral static wind velocity; thus time series of lateral static girder displacement are decomposed into nonlinear correlation term and discreteness term, nonlinear correlation term of which is mathematically modeled by third‐order Fourier series with intervention of lateral static wind velocity and discreteness term of which is mathematically modeled by the combined models of ARMA(7,4) and EGARCH(2,1). Additionally, stable power spectrum density exists in time series of lateral dynamic girder displacement, which can be well described by the fourth‐order Gaussian series; thus time series of lateral dynamic girder displacement are mathematically modeled by harmonic superposition function. By comparison and verification between simulative and monitoring lateral girder displacements from September 1 to September 3, the presented mathematical models are effective to simulate time series of lateral girder displacement from main girder of Sutong Cable‐Stayed Bridge.
Modelling and Laboratory Studies on the Adhesion Fatigue Performance for Thin-Film Asphalt and Aggregate System
Authors: Wang Dongsheng , Yi Junyan , Feng Decheng
Published: June 2014

Adhesion between asphalt and aggregate plays an important role in the performance of asphalt mixtures. A low-frequency adhesion fatigue test was proposed in this paper to study the effect of environment on the asphalt-aggregate adhesion system. The stress-based fatigue model had been utilized to describe the fatigue behavior of thin-film asphalt and aggregate system. The factors influencing the adhesion fatigue performance were also investigated. Experiment results show that asphalt has more important effect on the adhesion performance comparing with aggregate. Basalt, which is regarded as hydrophobic aggregates with low silica content, has better adhesion performance to asphalt binder when compared with granite. The effects of aging on the adhesion fatigue performance are different for PG64-22 and rubber asphalt. Long-term aging is found to reduce the adhesion fatigue lives for rubber asphalt and aggregate system, while the effect of long-term aging for aggregate and PG64-22 binder system is positive. Generally the increased stress amplitude and test temperature could induce greater damage and lead to less fatigue lives for adhesion test system.
Reliability Modeling for Systems with Multiple Degradation Processes Using Inverse Gaussian Process and Copulas
Authors: Liu Zhenyu , Ma Xiaobing , Yang Jun , Zhao Yu
Published: June 2014

We develop a reliability model for systems with s‐dependent degradation processes using copulas. The proposed model accommodates assumptions of s‐dependence among degradation processes and allows for different marginal distributions. This flexibility makes the model more attractive compared with the multivariate distribution model, which lay on the limitation of the homogeneous marginal distribution and can only describe linear correlation. Marginal degradation process is modeled by the inverse Gaussian (IG) process with time scale transformation. Furthermore, we incorporate random drift to account for the possible heterogeneity in population. This paper also develops the statistical inference method using EM algorithm with two‐stage procedure. The comparison results of the reliability estimation under both s‐dependent and s‐independent assumptions are illustrated in the illustrative example to demonstrate the applicability of the proposed method.
The Optimal Replenishment Policy under Trade Credit Financing with Ramp Type Demand and Demand Dependent Production Rate
Authors: Qin Juanjuan , Liu Weihua
Published: June 2014

This paper investigates the optimal replenishment policy for the retailer with the ramp type demand and demand dependent production rate involving the trade credit financing, which is not reported in the literatures. First, the two inventory models are developed under the above situation. Second, the algorithms are given to optimize the replenishment cycle time and the order quantity for the retailer. Finally, the numerical examples are carried out to illustrate the optimal solutions and the sensitivity analysis is performed. The results show that if the value of production rate is small, the retailer will lower the frequency of putting the orders to cut down the order cost; if the production rate is high, the demand dependent production rate has no effect on the optimal decisions. When the trade credit is less than the growth stage time, the retailer will shorten the replenishment cycle; when it is larger than the breakpoint of the demand, within the maturity stage of the products, the trade credit has no effect on the optimal order cycle and the optimal order quantity.
Photoluminescence of MoS2 Prepared by Effective Grinding‐Assisted Sonication Exfoliation
Authors: Wu Jing-Yuan , Lin Meng-Na , Wang Long-De , Zhang Tong
Published: June 2014

Exfoliation of bulk molybdenum disulfide (MoS2) using sonication in appropriate solvent is a promising route to large‐scale preparation of few‐layered or monolayered crystals. Grinding‐assisted sonication exfoliation was used for preparing monolayered MoS2 nanosheets from natural mineral molybdenite. By controlling the sonication time, larger crystallites could be further exfoliated to smaller as well as thinner nanosheets without damaging their structures. The concentration of 1.6 mg mL−1 of final solution could be achieved. Several microscopic techniques like scanning electron microscopy, transmission electron microscopy, and atomic force microscopy were employed to evaluate the exfoliation results. Strong photoluminescence with the peak centered at 440 nm was also observed in the resulting dispersion which included several small lateral‐sized (~3 nm) nanostructures.
Invariant Inhomogeneous Bianchi Type-I Cosmological Models with Electromagnetic Fields Using Lie Group Analysis in Lyra Geometry
Authors: Ali Ahmad T.
Published: June 2014

We find a new class of invariant inhomogeneous Bianchi type-I cosmological models in electromagnetic field with variable magnetic permeability. For this, Lie group analysis method is used to identify the generators that leave the given system of nonlinear partial differential equations (NLPDEs) (Einstein field equations) invariant. With the help of canonical variables associated with these generators, the assigned system of PDEs is reduced to ordinary differential equations (ODEs) whose simple solutions provide nontrivial solutions of the original system. A new class of exact (invariant-similarity) solutions have been obtained by considering the potentials of metric and displacement field as functions of coordinatesxandt. We have assumed thatF12is only nonvanishing component of electromagnetic field tensorFij. The Maxwell equations show thatF12is the function ofxalone whereas the magnetic permeabilityμ¯is the function ofxandtboth. The physical behavior of the obtained model is discussed.
A Fast Density-Based Clustering Algorithm for Real-Time Internet of Things Stream
Authors: Amini Amineh , Saboohi Hadi , Ying Wah Teh , Herawan Tutut
Published: June 2014

Data streams are continuously generated over time from Internet of Things (IoT) devices. The faster all of this data is analyzed, its hidden trends and patterns discovered, and new strategies created, the faster action can be taken, creating greater value for organizations. Density-based method is a prominent class in clustering data streams. It has the ability to detect arbitrary shape clusters, to handle outlier, and it does not need the number of clusters in advance. Therefore, density-based clustering algorithm is a proper choice for clustering IoT streams. Recently, several density-based algorithms have been proposed for clustering data streams. However, density-based clustering in limited time is still a challenging issue. In this paper, we propose a density-based clustering algorithm for IoT streams. The method has fast processing time to be applicable in real-time application of IoT devices. Experimental results show that the proposed approach obtains high quality results with low computation time on real and synthetic datasets.
A Free Search Krill Herd Algorithm for Functions Optimization
Authors: Li Liangliang , Zhou Yongquan , Xie Jian
Published: June 2014

To simulate the freedom and uncertain individual behavior of krill herd, this paper introduces the opposition based learning (OBL) strategy and free search operator into krill herd optimization algorithm (KH) and proposes a novel opposition‐based free search krill herd optimization algorithm (FSKH). In FSKH, each krill individual can search according to its own perception and scope of activities. The free search strategy highly encourages the individuals to escape from being trapped in local optimal solution. So the diversity and exploration ability of krill population are improved. And FSKH can achieve a better balance between local search and global search. The experiment results of fourteen benchmark functions indicate that the proposed algorithm can be effective and feasible in both low‐dimensional and high‐dimensional cases. And the convergence speed and precision of FSKH are higher. Compared to PSO, DE, KH, HS, FS, and BA algorithms, the proposed algorithm shows a better optimization performance and robustness.
Robust Control Allocation among Overactuated Spacecraft Thrusters under Ellipsoidal Uncertainty
Authors: Duan Chenyang , Zhang Shijie , Zhao Yafei , Kong Xianren
Published: June 2014

Spacecrafts with overactuated and redundant thrusters can work normally once some of them are out of work, which improves the reliability of spacecraft in orbit. In this way, the desired command of controller needs to be dynamically allocated among thrusters. Considering that uncertain factors may appear in forms of dynamics, installation errors, thrust deviations, or failures, this paper proposes a robust control allocation under ellipsoidal uncertainty. This method uses the uncertainty ellipsoid set to describe the uncertainty of the thrusters firstly and establish the thrust allocation robust reference model and then transforms it into a cone optimization model which can be solved as an optimized problem. Finally, this paper adopts the interior-point method for solving the optimization problem. In this way, difficulties of solving the problem caused by parameter uncertainties are avoided effectively. Finally, we take satellite rendezvous and docking as simulation scenarios; it is verified that the cumulative distribution error and maximum error can be reduced by more than 15% when the random error of control efficiency matrix is 5%–20%; also, precision of thruster allocation is improved.
Singularity-Free Neural Control for the Exponential Trajectory Tracking in Multiple-Input Uncertain Systems with Unknown Deadzone Nonlinearities
Authors: Pérez-Cruz J. Humberto , Rubio José de Jesús , Encinas Rodrigo , Balcazar Ricardo
Published: June 2014

The trajectory tracking for a class of uncertain nonlinear systems in which the number of possible states is equal to the number of inputs and each input is preceded by an unknown symmetric deadzone is considered. The unknown dynamics is identified by means of a continuous time recurrent neural network in which the control singularity is conveniently avoided by guaranteeing the invertibility of the coupling matrix. Given this neural network-based mathematical model of the uncertain system, a singularity-free feedback linearization control law is developed in order to compel the system state to follow a reference trajectory. By means of Lyapunov-like analysis, the exponential convergence of the tracking error to a bounded zone can be proven. Likewise, the boundedness of all closed-loop signals can be guaranteed.
Volumetric Verification of Multiaxis Machine Tool Using Laser Tracker
Authors: Aguado Sergio , Samper David , Santolaria Jorge , Aguilar Juan José
Published: June 2014

This paper aims to present a method of volumetric verification in machine tools with linear and rotary axes using a laser tracker. Beyond a method for a particular machine, it presents a methodology that can be used in any machine type. Along this paper, the schema and kinematic model of a machine with three axes of movement, two linear and one rotational axes, including the measurement system and the nominal rotation matrix of the rotational axis are presented. Using this, the machine tool volumetric error is obtained and nonlinear optimization techniques are employed to improve the accuracy of the machine tool. The verification provides a mathematical, not physical, compensation, in less time than other methods of verification by means of the indirect measurement of geometric errors of the machine from the linear and rotary axes. This paper presents an extensive study about the appropriateness and drawbacks of the regression function employed depending on the types of movement of the axes of any machine. In the same way, strengths and weaknesses of measurement methods and optimization techniques depending on the space available to place the measurement system are presented. These studies provide the most appropriate strategies to verify each machine tool taking into consideration its configuration and its available work space.
Prostate Cancer SubtyPINg BiomarKers and Outcome: Is Clarity EmERGing?
Authors: Smith Steven C. , Tomlins Scott A.
Published: June 2014

Molecular prostate cancer subtypes have been proposed on the basis of mutually exclusive SPINK1 and ERG overexpression, with conflicting reports on their prognostic ability. Flavin and colleagues report that SPINK1 is neither prognostic nor absolutely mutually exclusive with ERG, raising important questions about prostate cancer molecular subtyping and prognostic biomarker evaluation. Clin Cancer Res; 20(18); 4733–6. ©2014 AACR.
Preclinical Evaluation of Multistep Targeting of Diasialoganglioside GD2 Using an IgG-scFv Bispecific Antibody with High Affinity for GD2 and DOTA Metal Complex
Authors: Cheal Sarah M. , Xu Hong , Guo Hong-fen , Zanzonico Pat B. , Larson Steven M. , Cheung Nai-Kong
Published: June 2014

Bispecific antibodies (BsAb) have proven to be useful targeting vectors for pretargeted radioimmunotherapy (PRIT). We sought to overcome key PRIT limitations such as high renal radiation exposure and immunogenicity (e.g., of streptavidin–antibody fusions), to advance clinical translation of this PRIT strategy for diasialoganglioside GD2-positive [GD2(+)] tumors. For this purpose, an IgG-scFv BsAb was engineered using the sequences for the anti-GD2 humanized monoclonal antibody hu3F8 and C825, a murine scFv antibody with high affinity for the chelator 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) complexed with β-particle–emitting radiometals such as 177Lu and 90Y. A three-step regimen, including hu3F8-C825, a dextran-based clearing agent, and p-aminobenzyl-DOTA radiolabeled with 177Lu (as 177Lu-DOTA-Bn; t1/2 = 6.71 days), was optimized in immunocompromised mice carrying subcutaneous human GD2(+) neuroblastoma (NB) xenografts. Absorbed doses for tumor and normal tissues were approximately 85 cGy/MBq and ≤3.7 cGy/MBq, respectively, with therapeutic indices (TI) of 142 for blood and 23 for kidney. A therapy study (n = 5/group; tumor volume, 240 ± 160 mm3) with three successive PRIT cycles (total 177Lu: ∼33 MBq; tumor dose ∼3,400 cGy), revealed complete tumor response in 5 of 5 animals, with no recurrence up to 28 days after treatment. Tumor ablation was confirmed histologically in 4 of 5 mice, and normal organs showed minimal overall toxicities. All nontreated mice required sacrifice within 12 days (>1.0-cm3 tumor volume). We conclude that this novel anti-GD2 PRIT approach has sufficient TI to successfully ablate subcutaneous GD2(+)-NB in mice while sparing kidney and bone marrow. Mol Cancer Ther; 13(7); 1803–12. ©2014 AACR.
Communing with Darwish’s Ghosts
Authors: Ball Anna
Published: June 2014

In his prose poem Absent Presence (published in English translation in 2010), the revered Palestinian poet Mahmoud Darwish identified a source of tension that resonates through much Palestinian creative expression: a tension not between Arab and Jew, nor between Israeli and Palestinian but between presence and absence. Drawing on the many motifs of presence and absence, and by extension, of visibility and invisibility, spectrality and haunting that surface in Absent Presence, this article seeks to translate Darwish’s poetic meditations into a visual context by placing his work in dialogue with two pieces of Palestinian video art, Sharif Waked’s To Be Continued … (2009) and Wafaa Yasin’s The Imaginary Houses of Palestine (2010), which share Darwish’s preoccupation with ideas of the spectral, and of present-day Palestine’s complex relationship with its past. Mobilizing a range of critical concepts including Abu-Lughod’s theorizations of ‘postmemory’ and Derrida’s notion of ‘the spectral’, this article explores the ways in which various forms of absence arising from Palestine’s fraught national history haunt contemporary Palestinian video art, and argues that the presence of the ‘spectral’ within such works also reveals a vibrant creative present in motion.
Refracted Filmmaking in Muhammad Malas’s The Dream and Kamal Aljafari’s The Roof
Authors: Yaqub Nadia
Published: June 2014

This article analyzes two films, The Dream (Muhammad Malas, 1987) and The Roof (Kamal Aljafari, 2006) to define a particular mode of filmmaking. By avoiding direct representations of violence and employing what I call refraction, filmmakers create experiences for viewers that make agential understandings of particular Palestinian times, places and experiences possible. Through refraction, filmmakers refrain from providing new information or explanations, but rather create for spectators a new experience that leads to an affective understanding of a circumstance or event. Refraction can encompass different forms of counter-hegemonic practices. It can deconstruct or queer dominant discursive practices. Through refraction filmmakers can circumvent the discourse of claims-making that viewers have widely come to expect in the Palestinian context, instead creating a point of encounter through which characters and viewers can meet on the basis of equality.
The Kanafani Effect
Authors: Abu-Remaileh Refqa
Published: June 2014

Guided by Ghassan Kanafani’s seminal studies on ‘resistance literature’, this paper extends the concept to contemporary Palestinian fiction film to explore its permutations in the visual medium. The resistance label has had its repercussions on Palestinian cultural production; however, it continues to inspire an aesthetically-driven innovative defiance in the face of an ongoing Israeli occupation. Tracing the divorce of cultural production from political organizations, I focus on a Palestine configuring ‘inside’, attending to the films of Michel Khleifi and Elia Suleiman, to explore therein a particular synthesis of counter-narratives of resistance. Embedded in the moving image medium itself, in its structures, techniques and narrative forms, the aesthetic resistance Kanafani had anticipated shines through these artists’ films to disclose new spaces of everyday resistance, in expressions of freedom, satire, self-criticism and humor. The spectator is called on to partake in creating these spaces, by reading silences and interpreting multilayered images so as to construct meanings that cannot be hijacked by language or confined by oppression.
The shallow-water New Caledonia Drilliidae of genus Clavus Montfort, 1810 (Mollusca: Gastropoda: Conoidea)
Authors: KILBURN RICHARD N. , FEDOSOV ALEXANDER , KANTOR YURI
Published: June 2014

Species of the genus Clavus of the conoidean family Drilliidae that occur in the littoral and shallow waters of New Caledonia are here revised. This study is based primarily on recent expedition material from the Institut de Recherche pour le Développement (New Caledonia) and Muséum National d’Histoire Naturelle (France). A total of 22 species is recorded, of which eight are described as new.        New species: Clavus boucheti, Clavus delphineae, Clavus virginieae, Clavus picoides, Clavus squamiferus, Clavus devexistriatus, Clavus hylikos, Clavus maestratii;        New synonyms: Tylotiella Habe, 1958 = Clavus; Clavus leforestieri Hervier, 1896 = Pleurotoma obliquicostata Reeve, 1845; Pleurotoma mariei Crosse, 1869 = Pleurotoma lamberti Montrouzier, 1860; Clavus mighelsi Kay, 1979, new name for Pleurotoma acuminata Mighels, 1845, non J. Sowerby, 1816, was misidentified by Kay 1979; the lectotype of P. acuminata Mighels, 1845, is mangeliine. Clavus mighelsi sensu Kay 1979, is a synonym of Pleurotoma humilis E. A. Smith, 1879. It is suggested that Pleurotoma pulchella Reeve, 1845, sometimes treated as an Indo-Pacific species, may be a senior synonym of Fenimorea halidorema Schwengel, 1940, from the tropical western Atlantic. Nomen dubium: Pleurotoma mediocris Deshayes, 1863.
Torrenticolid water mites (Acari: Hydrachnidia: Torrenticolidae) from Ghana
Authors: PEŠIĆ VLADIMIR , SMIT HARRY
Published: June 2014

New records of water mites of the family Torrenticolidae (Acari: Hydrachnidia) from streams in Ghana are presented. One new subgenus, Vietsclio n. subgen., is erected to accommodate Monatractides uniscutatus (K. Viets, 1925), characterized by the presence of swimming setae on leg II–IV. Seven new species are described: Neoatractides (Allotorrenticola) erato n. sp., Monatractides (Monatractides) euterpe n. sp., M. (M.) melpomene n. sp., M. (M.) polyhymnia n. sp., M. (M.) thalia n. sp., M. (M.) terpsichore n. sp., M. (M.) urania n. sp. Torrenticola calliope is established as the new name for previously reported populations of T. harrisoni K. Viets, 1956 from Ethiopia. The first description of the female is given for Monatractides (Monatractides) acutiscutatus (K. Viets, 1914) and M. (Vietsclio) uniscutatus K. Viets 1925. The subgenus Allotorrenticola Cook, 1967, previously known only from Asia, is reported for the first time from the Afrotropical region. Additionally, first records for Ghana are given for Torrenticola anomallela Cook, 1966, T. bomiensis Cook, 1966, T. fasciata (K. Viets, 1916), T. motasi Cook, 1966, T. harrisoni K. Viets, 1956, Pseudotorrenticola mitchelli Cook, 1966, Monatractides (Monatractides) acutiscutatus (K. Viets, 1914), M. (M.) convexiscutata (K. Viets, 1958), M. (M.) koenikei (K. Viets, 1916), M. (M.) stigeophora (Cook, 1966), M. (M.) ventriosus (K. Viets, 1916), M. (M.) microstoma Koenike, 1898—species complex, and M. uniscutatus (K. Viets 1925).
Description of Alloretochus sigillatus new species with comments and new distributional records for Alloretochus peruanicus (Ephemeroptera, Caenidae, Brachycercinae)
Authors: MOLINERI C.
Published: June 2014

Alloretochus sigillatus sp. nov. is described from adults of both sexes and eggs from Bolivia and Ecuador. Diagnostic characters of this species include: large body size, ratio pedicel/scape 1.75, presence of posteromedian projection on metanotum, characteristic blackish marks on abdominal terga, presence of vestiges of posterolateral projections on abdomen segments IV–VI, male subgenital plate broadly emarginated posteriorly, ratios forceps length/subbasal width 8.9, female sternum IX produced distally reaching apex of segment X, tapering distally with rounded apex, egg with 4 costae in lateral half. Additional characters for all stages and SEM photographs of eggs are provided for Alloretochus peruanicus, with new records of its presence in Argentina, Bolivia, Peru and Colombia.
A review of the genus Limnocythere (Podocopida: Limnocytheridae) in the Pampean region (Argentina), with the description of a new species, Limnocythere cusminskyae sp. nov.
Authors: RAMÓN-MERCAU JOSEFINA , PLASTANI MARÍA SOFÍA , LAPRIDA CECILIA
Published: June 2014

Occurrences of Quaternary and extant limnocytherids in the Pampean region of Argentina are reviewed, particularly in relation with their use as paleohydrological indicators in environmental reconstruction research. In spite of its spread occurrence, the systematic of the genus in the area is still little known, which results in most records being left in open nomenclature and paleoenvironmental inferences being made on the basis of general considerations of the genus. We describe a new species, Limnocythere cusminskyae sp. nov., which we consider to be the taxon featured in several of these works, and discuss its morphological and ecological differences with coexisting Limnocythere species, particularly the proposed indicator species L. rionegroensis Cusminsky & Whatley.
Cyrtodactylus wangkulangkulae (Squamata: Gekkonidae), a new Bent-toed Gecko from Satun Province, southern Thailand
Authors: SUMONTHA MONTRI , PAUWELS OLIVIER S. G. , SUWANNAKARN NIKORN , NUTATHEERA THAMMARAT , SODOB WATCHIRA
Published: June 2014

We describe a new Cyrtodactylus from Manang District, Satun Province, southern Thailand, based on an adult female having a snout-vent length of 73.9 mm, a long tail (1.34 times snout-vent length), a complex blotched and banded dorsal pattern with four irregularly shaped dark bands between limbs insertions, bluish-grey iris, discontinuous series of enlarged poreless femoral and precloacal scales, 10 regularly arranged dorsal tubercle rows, 38 ventral scale rows between ventrolateral skin folds, transversely enlarged subcaudal plates, and no precloacal groove.
The Tropical Cyclone Diurnal Cycle of Mature Hurricanes
Authors: Dunion Jason P. , Thorncroft Christopher D. , Velden Christopher S.
Published: June 2014

The diurnal cycle of tropical convection and the tropical cyclone (TC) cirrus canopy has been described extensively in previous studies. However, a complete understanding of the TC diurnal cycle remains elusive and is an area of ongoing research. This work describes a new technique that uses infrared satellite image differencing to examine the evolution of the TC diurnal cycle for all North Atlantic major hurricanes from 2001 to 2010. The imagery reveals cyclical pulses in the infrared cloud field that regularly propagate radially outward from the storm. These diurnal pulses begin forming in the storm’s inner core near the time of sunset each day and continue to move away from the storm overnight, reaching areas several hundreds of kilometers from the circulation center by the following afternoon. A marked warming of the cloud tops occurs behind this propagating feature and there can be pronounced structural changes to a storm as it moves away from the inner core. This suggests that the TC diurnal cycle may be an important element of TC dynamics and may have relevance to TC structure and intensity change. Evidence is also presented showing the existence of statistically significant diurnal signals in TC wind radii and objective Dvorak satellite-based intensity estimates for the 10-yr hurricane dataset that was examined. Findings indicate that TC diurnal pulses are a distinguishing characteristic of the TC diurnal cycle and the repeatability of TC diurnal pulsing in time and space suggests that it may be an unrealized, yet fundamental TC process.
Recurrent Cholesteatoma With Massive Extension to Temporoparietal Scalp
Authors: Zhu Vivian F. , Isaacson Brandon , Mull Jason , Myers Larry L.
Published: June 2014

Background:

Cholesteatomas are locally destructive collections of epithelial debris arising from temporal bone squamous epithelium. Recurrences may occur after removal and are typically located within the temporal bone.

Objective:

This study aimed to report a case of a massive, recurrent cholesteatoma with extension to temporoparietal scalp in a 37-year-old woman.

Methods:

Case report with literature review.

Results:

The patient underwent complete excision of a well-circumscribed left temporal mass, intraoperatively identified to arise from the middle ear and to contain keratin debris.

Conclusion:

We report a case of recurrent cholesteatoma with massive extension to temporoparietal scalp. Clinical suspicion of recurrent cholesteatoma should remain in the differential diagnosis of temporal mass with prior history of cholesteatoma.
The Hybrid Lid Crease Approach to Address Lateral Frontal Sinus Disease With Orbital Extension
Authors: Kopelovich Jonathan C. , Baker Meredith S. , Potash Andrea , Desai Lajja , Allen Richard C. , Chang Eugene H.
Published: June 2014

Objective:

This study aimed to describe the hybrid lid crease approach in conjunction with functional endoscopic sinus surgery (FESS) for lateral frontal sinus disease with orbital extension.

Study Design:

Retrospective case review.

Methods:

Patients undergoing hybrid lid crease approach with FESS for frontal sinus disease were reviewed retrospectively. Surgical indications consisted of inverting papilloma with extension into the frontal sinus (n = 1) and frontal sinus mucocele (n = 2). Inclusion criteria included presence of disease in the lateral frontal sinus with extension into the orbital space and erosion of the superior orbital rim. Preoperative and postoperative parameters included complete ophthalmologic exam, endoscopic exam, and computed tomography scan.

Results:

We were able to access the frontal sinus and orbit in all 3 cases and address sinus pathology of the lateral frontal sinus and orbit using the lid crease approach with FESS. All patients had improvement in ophthalmologic symptoms and interval disease resolution and were satisfied with their postoperative lid crease incision.

Conclusion:

The lid crease approach offers direct access to the frontal sinus with minimal dissection through a well-hidden incision. In our case series of lateral frontal sinus pathology with orbital extension, the hybrid lid crease approach with FESS allowed complete eradication of disease without recurrence.
The Swing-Door Island Flap Canalplasty Technique
Authors: Nogueira Claudia , Mallick Fatima , Kaushal Sushila , Banerjee Anil
Published: June 2014

Objective:

This article describes a new canalplasty technique for the treatment of symptoms resulting from chronic refractory otitis externa.

Methods:

We report on our experience using a swing-door island flap and a periosteal flap. Thirteen patients underwent treatment and a total of 19 ears were operated on. The range of preoperative symptoms was 3 to 22 years (mean length of symptoms = 12 years).

Results:

The postoperative course in all the patients showed this to be a satisfactory treatment with no recurrence of symptoms.

Conclusion:

The swing-door island flap canalplasty technique is an effective surgical treatment in patients with refractory otitis externa.
Obstacles and momentum on the path to post-genocide and mass atrocity reparations: A comparative analysis, 1945–2010
Authors: Ratner RS , Woolford Andrew , Patterson Andrew C
Published: June 2014

In contemporary human rights politics, much international effort is invested in securing reparative settlements in the aftermath of genocide and mass atrocities. This article details a broad comparative research project in which we seek to map the respective paths of 47 post-genocide and mass atrocity reparations claims. Based on the findings of this study, using a mixed-methods approach, we highlight some potential obstacles within claims processes and demonstrate the importance of resource mobilization for reparative success. In particular, this article advances sociological understanding of the importance of momentum in resource mobilization as a means of carrying a reparations movement toward successful transitional justice outcomes.
Analysis of shape-memory polymer composites with embedded microvascular system for fast thermal response
Authors: Yu Kai , Phillips David M , Baur Jeffery W , Qi H Jerry
Published: June 2014

The microvascular strategy demonstrates unique advantages in shape-memory polymer applications as it can achieve both rapid thermal activation and deactivation during a typical shape-memory cycle. In addition, localized overheating can be avoided in comparison with other heating methods, such as the magnetic and electric heating. In this paper, a finite-element-based computational analysis was performed to study the rapid thermal response of shape-memory polymer composites with an embedded microvascular system. We show that the polymer shape-fixing speed, the shape fixity after a given cooling time, and the shape-recovery rate are significantly enhanced due to the rapid cooling and heating effect of internal microvasculature. The effect of the composite dimensions and microvascular channel arrangement on the activation and deactivation was studied. Typically, reducing the composite thickness and tube spacing increases the shape-recovery speed of the shape-memory polymer composite by effectively reducing the length of the thermal conduction pathways. Strategies for achieving an optimized tube arrangement were also discussed based on the considerations of the system mass and thermal boundary conditions. The results in this paper provide a guideline for further designs and applications of shape-memory polymer composites with embedded microvasculature.
Holistic Versus Analytic Expressions in Artworks
Authors: Senzaki Sawa , Masuda Takahiko , Nand Kristina
Published: June 2014

Previous research has documented systematic cultural variations in adults’ cognitive processes. In particular, research on culture and aesthetics suggests that East Asian adults’ aesthetic expression tends to be holistic and context-oriented, whereas North American adults’ aesthetic expression tends to be analytic and object-oriented (Masuda, Gonzalez, Kwan, & Nisbett, 2008). However, research focusing specifically on the developmental processes of such cultural differences in children’s artworks is lacking, with the notable exception of an empirical study conducted by Rübeling et al. (2011). Our current research examined whether school-age children in Grades 1 through 6 exhibit these culturally unique patterns of expression, and if so, when. Children were asked to produce either landscape drawings (Study 1, n = 495) or landscape collages using ready-made items (Study 2, n = 376). The results indicated that children in both cultures gradually develop expressions unique to each culture. Although Grade 1 children’s artworks were still similar across cultures, artworks in Grade 2 and higher showed substantial cultural variations. Japanese children were more likely than their Canadian counterparts to place the horizon higher in the visual space and to include more pieces of information. The higher placement of the horizon is linked to the context-oriented visual attention style seen in adults’ drawings and historical paintings in East Asian cultures, as opposed to object-focused drawing styles commonly seen in North American cultures. We also report culturally similar patterns in the developmental trajectory and discuss the internalization process of culturally dominant patterns of perception.
Examining the Efficacy of a Tier 2 Kindergarten Mathematics Intervention
Authors: Clarke Ben , Doabler Christian T. , Smolkowski Keith , Baker Scott K. , Fien Hank , Strand Cary Mari
Published: June 2014

This study examined the efficacy of a Tier 2 kindergarten mathematics intervention program, ROOTS, focused on developing whole number understanding for students at risk in mathematics. A total of 29 classrooms were randomly assigned to treatment (ROOTS) or control (standard district practices) conditions. Measures of mathematics achievement were collected at pretest and posttest. Treatment and control students did not differ on mathematics assessments at pretest. Gain scores of at-risk intervention students were significantly greater than those of control peers, and the gains of at-risk treatment students were greater than the gains of peers not at risk, effectively reducing the achievement gap. Implications for Tier 2 mathematics instruction in a response to intervention (RtI) model are discussed.
Collecting data on nonviolent action
Authors: Day Joel , Pinckney Jonathan , Chenoweth Erica
Published: June 2014

While several existing datasets can help to address pressing questions on nonviolent resistance, data collection on nonviolent conflict involves several distinct challenges, including (1) conceptual distinctions between the absence of violence, non-violent behavior, and nonviolent direct action; (2) a systematic violence bias in mainstream news reports; and (3) incentives to misrepresent. As a way forward, we advocate (1) collecting data at multiple temporal and purposive units; (2) diversifying source materials; and (3) coding ambiguity as a meaningful substantive variable.
The joint impact of microeconomic parameters and job insecurity perceptions on commitment towards one’s job, occupation and career: A multilevel approach
Authors: Otto Kathleen , Mohr Gisela , Kottwitz Maria U , Korek Sabine
Published: June 2014

This study investigates the relationship of microeconomic parameters and subjective job insecurity perceptions with vocational commitment, i.e. commitment towards one’s job, occupation and career in a sample of 236 individuals, nested in 47 German administrative districts. Applying a multilevel approach, job insecurity (quantitative and qualitative) and vocational commitment indicators (operationalized via job involvement, occupational commitment and career satisfaction) were measured at the individual level, whereas microeconomic parameters were collected at the level of administrative district. In addition to regional unemployment rates, we included two further economic parameters, namely change in gainful employment (i.e., change in a district’s number of gainful workers) and change in economic growth (i.e., change in a district’s GDP). It is worth noting that our findings only revealed spillover effects from economic parameters on qualitative (not quantitative) job insecurity on a bivariate level (not after considering controls in multilevel regressions). Cross-level interactions further indicated that environmental economic conditions are important for the relationship between subjective job insecurity perceptions and outcomes.
The Relationship Between Anger, Childhood Maltreatment, and Emotion Regulation Difficulties in Intimate Partner and Non-Intimate Partner Violent Offenders
Authors: Gardner Frank L. , Moore Zella E. , Dettore Melissa
Published: June 2014

Violence is a significant public health problem, which has been linked to the primary emotion of anger. While several theoretical models have attempted to understand the relationship between anger and violence, empirical evidence to support these models and the psychological treatments that follow from them have been lacking. A newer model for understanding the relationship between anger and violence emphasizes the dual diatheses of childhood maltreatment and difficulties in emotion regulation as central to understanding the anger−violence relationship. Investigating the relationship between childhood maltreatment and anger experience and expression among 88 violent offenders referred for intimate partner or non-intimate partner violent offenses, results herein confirm that substantial childhood maltreatment is found among violent offenders, with differing patterns of abuse noted across groups. Furthermore, mediational analyses indicate that difficulties in emotion regulation mediate the relationship between childhood maltreatment and various aspects of anger experience and expression among both types of offenders.