bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design of an RMPC with a time‐varying terminal constraint set for tracking problem
Authors: Razi Maryam , Haeri Mohammad 
Published: October 2015

SummaryThis paper presents a robust model predictive control algorithm with a time‐varying terminal constraint set for systems with model uncertainty and input constraints. In this algorithm, the nonlinear system is approximated by a linear model where the approximation error is considered as an unstructured uncertainty that can be represented by a Lipschitz nonlinear function. A continuum of terminal constraint sets is constructed off‐line, and robust stability is achieved on‐line by using a variable control horizon. This approach significantly reduces the computational complexity. The proposed robust model predictive controller with a terminal constraint set is used in tracking set‐points for nonlinear systems. The effectiveness of the proposed method is illustrated with a numerical example. Copyright © 2015 John Wiley & Sons, Ltd.
Explicit improved vertex control for uncertain, time‐varying linear discrete‐time systems with state and control constraints
Authors: Nguyen Hoai‐Nam , Gutman Per‐Olof , Olaru Sorin , Hovd Morten 
Published: October 2015

SummaryA technique is presented to compute an explicit state feedback solution to the regulation problem for uncertain and/or time‐varying linear discrete‐time systems with state and control constraints. A piecewise affine control law is provided that not only guarantees recursive feasibility and robust asymptotic stability but is also optimal for a region of the state space containing the origin. Copyright © 2015 John Wiley & Sons, Ltd.
Biclique cryptanalysis of MIBS‐80 and PRESENT‐80 block ciphers
Authors: Faghihi Sereshgi Mohammad Hossein , Dakhilalian Mohammad , Shakiba Mohsen 
Published: October 2015

AbstractPRESENT and MIBS are two lightweight block ciphers that are suitable for low resource devices such as radio‐frequency identification tags. In this paper, we present the first biclique cryptanalysis of MIBS block cipher and a new biclique cryptanalysis of PRESENT block cipher. These attacks are performed on full‐round MIBS‐80 and full‐round PRESENT‐80. Using matching without matrix technique in the attack on MIBS and choosing a sub‐key space of an internal round for key division eventuate to reduce the security of this cipher by 1bit, while the data complexity of attack is 252 chosen plaintext. The attack on PRESENT‐80 has a data complexity of at most 222 chosen plaintext and computational complexity of 279.34 encryption that both complexities are lower than of other cryptanalyses of full‐round PRESENT‐80 so far. Also, in this paper, we use early abort technique to efficiently filter out wrong keys in matching phase of biclique attack of PRESENT‐80. Copyright © 2015 John Wiley & Sons, Ltd.
New data on stiff‐tailed duck evolution and dispersal from a new species of diving duck (Anseriformes: Anatidae: cf. Oxyurinae) from the Miocene High Rock Caldera in north‐west Nevada, USA
Authors: Stidham Thomas A. , Hilton Richard P. 
Published: October 2015

AbstractA new species of diving duck from lacustrine deposits inside the middle Miocene High Rock Caldera in north‐west Nevada (USA) appears to be more closely related to the stiff‐tailed ducks Oxyura and Nomonyx than to other Oligocene and Miocene anatid taxa. The new species, Lavadytis pyrenae sp. nov., is represented by 24 fragments of humeri, tibiotarsi, tarsometatarsi, coracoids, a scapula and carpometacarpi, and several of the specimens are from juvenile individuals, indicating that the caldera palaeolake was a breeding site. The humerus has a ‘closed’ non‐pneumatic ventral pneumotricipital fossa, lacks a capital shaft ridge, has a cranial carpal fovea and has a pronounced medial epicondyle on the tibiotarsus. Many of the osteological features present in this new species also occur (convergently) among derived diving duck clades and therefore suggest that this extinct species foraged by diving. This new species’ phylogenetic position close to the extant species in Nomonyx and Oxyura, its middle Miocene age (16.1–14.6 Ma) and its geographical location in North America are consistent with molecular clock analyses placing the origin of the stem leading to Oxyura + Nomonyx at approximately 15.9 Ma in the New World. This new species could indicate that the stem of the Oxyura + Nomonyx clade had reached the New World by the middle Miocene and that the diversification present among New World Oxyurini/Oxyurinae began temporally close to the climatic warming of the Middle Miocene Climatic Optimum.
Synthesis, Crystal Structures, and Properties of Copper(II), Zinc(II), and Cadmium(II) Coordination Polymers Based on 5‐Nitro‐isophthalate and 1,2‐(2‐Pyridyl)‐1,2,4‐triazole
Authors: Li Ming‐Ze , Guo Jian‐Hua , Chen Jing 
Published: October 2015

AbstractThree coordination polymers, namely {[Cu(5‐nipa)(L22)](H2O)2}n (1), [Zn(5‐nipa)(L22)(H2O)]n (2), and {[Cd2(5‐nipa)2(L22)(H2O)3](H2O)3.6}n (3), were prepared under similar synthetic method based on 1,2‐(2‐pyridyl)‐1,2,4‐triazole (L22) and ancillary ligand 5‐nitro‐isophthalic acid (5‐H2nipa) with CuII, ZnII, and CdII perchlorate, respectively. All the complexes were characterized by IR spectroscopy, elemental analysis, and powder X‐ray diffraction (PXRD) patterns. Single‐crystal X‐ray diffraction indicates that complexes 1 and 2 show similar 1D chain structures, whereas complex 3 exhibits the 2D coordination network with hcb topology. The central metal atoms show distinct coordination arrangements ranging from distorted square‐pyramid for CuII in 1, octahedron for ZnII in 2, to pentagonal‐bipyramid for CdII in 3. The L22 ligand adopts the same (η3,μ2) coordination fashion in complexes 1–3, while the carboxyl groups of co‐ligand 5‐nipa2– adopt monodentate fashion in 1 and 2 and bidentate chelating mode in 3. These results indicate that the choice of metal ions exerts a significant influence on governing the target complexes. Furthermore, thermal stabilities of complexes 1–3 and photoluminescent properties of 2 and 3 were also studied in the solid state.
A Double‐Blinded Randomized Clinical Study on the Therapeutic Effect of Gastrografin® in Prolonged Postoperative Ileus After Elective Colorectal Surgery
Authors: Biondo Sebastiano , Miquel Jordi , Espin‐Basany Eloy , Sanchez Jose Luis , Golda Thomas , Ferrer‐Artola Ana Maria , Codina‐Cazador Antonio , Frago Ricardo , Kreisler Esther 
Published: October 2015

AbstractBackgroundPostoperative ileus is a common problem with significant clinical and economic consequences. We hypothesized that Gastrografin® may have therapeutic utility by accelerating the recovery of postoperative ileus after colorectal surgery. The aim of this trial was to study the impact of oral Gastrografin® administration on postoperative prolonged ileus (PPI) after elective colorectal surgery.MethodsThe main endpoint of this randomized, double‐blinded, controlled trial was time of resolution of PPI. The secondary endpoints were overall hospital length of stay, time to start oral intake, time to first passage of flatus or stools, time of need of nasogastric tube, and need of parenteral nutrition. Included criteria were patients older than 18 years, operated for colonic neoplasia, inflammatory bowel disease, or diverticular disease. There were two treatments: Gastrografin® administration and placebo. The sample size was calculated taking into account the average length of postoperative ileus after colorectal resection until tolerance to oral intake. Statistical analysis showed that 29 subjects in each group were needed.ResultsTwenty‐nine patients per group were randomized. Groups were comparable for age, gender, ASA Physical Status Classification System, stoma construction, and surgical technique. No statistical differences were observed in mean time to resolution between the two groups, 9.1 days (CI 95 %, 6.51–11.68) in Gastrografin® group versus 10.3 days (CI 6.96–10.29) in Placebo group (P = 0.878). Even if not statistically significant, time of resolution of PPI, overall length of stay, time of need of nasogastric tube, and time to tolerance of oral intake were shorter in the G group.ConclusionsGastrografin® does not accelerate significantly the recovery of prolonged postoperative ileus after elective colorectal resection when compared with placebo. However, it seems to clinically improve all the analyzed variables.
Apparent annual survival of staging ruffs during a period of population decline: insights from sex and site‐use related differences
Authors: Schmaltz Lucie Emilie , Juillet Cédric , Tinbergen Joost Marius , Verkuil Yvonne Ingje , Hooijmeijer Joslyn Corstiaan Elbert Wouter , Piersma Theunis 
Published: October 2015

AbstractThe ruff Philomachus pugnax, a lekking shorebird wintering in Africa and breeding across northern Eurasia, declined severely in its western range. Based on a capture‐mark‐resighting programme (2004–2011) in the westernmost staging area in Friesland (the Netherlands), we investigated changes in apparent annual survival in relation to age and sex to explore potential causes of decline. We also related temporal variation in apparent survival to environmental factors. We used the Capture‐Mark‐Recapture multievent statistical framework to overcome biases in survival estimates after testing for hidden heterogeneity of detection. This enabled the estimation of the probability to belong to high or low detectability classes. Apparent survival varied between years but was not related to weather patterns along the flyway, or to flood levels in the Sahel. Over time, a decline in apparent survival is suggested. Due to a short data series and flag loss in the last period this cannot be verified. Nevertheless, the patterns in sex‐specific detectability and survival lead to new biological insights. Among highly detectable birds, supposedly most reliant on Friesland, males survived better than females ( = 0.74, range 0.51–0.93; = 0.51, range 0.24–0.81). Among low detectable birds, the pattern is reversed ( = 0.64, range 0.37–0.89; = 0.73, range 0.48–0.93). Probably the staging population contains a mixture of sex‐specific migration strategies. A loss of staging females could greatly affect the dynamics of the western ruff population. Further unravelling of these population processes requires geographically extended demographic monitoring and the use of tracking devices.
Self-sufficient redox biotransformation of lignin-related benzoic acids with Aspergillus flavus
Authors: Palazzolo Martín A , Mascotti María L , Lewkowicz Elizabeth S , Kurina-Sanz Marcela 
Published: October 2015

Abstract
Aromatic carboxylic acids are readily obtained from lignin in biomass processing facilities. However, efficient technologies for lignin valorization are missing. In this work, a microbial screening was conducted to find versatile biocatalysts capable of transforming several benzoic acids structurally related to lignin, employing vanillic acid as model substrate. The wild-type Aspergillus flavus growing cells exhibited exquisite selectivity towards the oxidative decarboxylation product, 2-methoxybenzene-1,4-diol. Interestingly, when assaying a set of structurally related substrates, the biocatalyst displayed the oxidative removal of the carboxyl moiety or its reduction to the primary alcohol whether electron withdrawing or donating groups were present in the aromatic ring, respectively. Additionally, A. flavus proved to be highly tolerant to vanillic acid increasing concentrations (up to 8 g/L), demonstrating its potential application in chemical synthesis. A. flavus growing cells were found to be efficient biotechnological tools to perform self-sufficient, structure-dependent redox reactions. To the best of our knowledge, this is the first report of a biocatalyst exhibiting opposite redox transformations of the carboxylic acid moiety in benzoic acid derivatives, namely oxidative decarboxylation and carboxyl reduction, in a structure-dependent fashion.
The 2015 IUIS Phenotypic Classification for Primary Immunodeficiencies
Authors: Bousfiha Aziz , Jeddane Leïla , Al-Herz Waleed , Ailal Fatima , Casanova Jean‐Laurent , Chatila Talal , Conley Mary Ellen , Cunningham‐Rundles Charlotte , Etzioni Amos , Franco Jose Luis , Gaspar H. Bobby , Holland Steven M. , Klein Christoph , Nonoyama Shigeaki , Ochs Hans D. , Oksenhendler Eric , Picard Capucine , Puck Jennifer M. , Sullivan Kathleen E. , Tang Mimi L. K. 
Published: October 2015

Abstract
There are now nearly 300 single-gene inborn errors of immunity underlying phenotypes as diverse as infection, malignancy, allergy, auto-immunity, and auto-inflammation. For each of these five categories, a growing variety of phenotypes are ascribed to Primary Immunodeficiency Diseases (PID), making PIDs a rapidly expanding field of medicine. The International Union of Immunological Societies (IUIS) PID expert committee (EC) has published every other year a classification of these disorders into tables, defined by shared pathogenesis and/or clinical consequences. In 2013, the IUIS committee also proposed a more user-friendly, phenotypic classification, based on the selection of key phenotypes at the bedside. We herein propose the revised figures, based on the accompanying 2015 IUIS PID EC classification.
Stochastic Galerkin Formulations for $$\hbox {CO}_2$$ Transport in Aquifers: Numerical Solutions with Uncertain Material Properties
Authors: Pettersson Per 
Published: October 2015

Abstract
A stochastic Galerkin formulation for the transport of

$$\hbox {CO}_2$$

CO
2

in a tilted aquifer with uncertain heterogeneous properties is presented. We consider a simplified physics model assuming capillary pressure to be negligible compared to hydrostatic and viscous pressure. The flow is dominated by buoyancy and capillary trapping. We assume a stochastic permeability field and a stochastic model for the uncertain relative permeabilities. We prove that the proposed stochastic Galerkin formulation results in a hyperbolic system of equations, and we devise a numerical method that captures the expected solution discontinuities. The shock-capturing solver for the flux function is combined with an adaptive quadrature method for discontinuous isosurfaces that is used to compute the discontinuous stochastic accumulation coefficient. The stochastic solver is validated against Monte Carlo sampling of an analytical solution for the deterministic problem. The sharp features of the statistics of the solution are accurately captured by the numerical solver. The polynomial chaos framework admits low-cost post-processing of the output to obtain statistics of interest. By construction of an accurate polynomial chaos surrogate model of the output, fast sampling admits calculation of risk for leakage and failure probabilities.
Optical Modulation in the X-Ray Binary 4U 1543–624 Revisited
Authors: Wang Z. , Tziamtzis A. , Kaplan D. L. , Chakrabarty D. 
Published: October 2015

AbstractThe X-ray binary 4U 1543–624 has been provisionally identified as an ultra-compact system with an orbital period of ≃ 18 min. We have carried out time-resolved optical imaging of the binary to verify the ultra-short orbital period. Using 140 min of high-cadence r′-band photometry, we recover the previously-seen sinusoidal modulation and determine a period P = 18.20 ± 0.09 min. In addition, we also see a 7.0 × 10−4 mag min−1 linear decay, likely related to variations in the source's accretion activity. Assuming that the sinusoidal modulation arises from X-ray heating of the inner face of the companion star, we estimate a distance of 6.0–6.7 kpc and an inclination angle of 34°–61° (90% confidence) for the binary. Given the stability of the modulation, we can confirm that the modulation is orbital in origin and 4U 1543–624 is an ultra-compact X-ray binary.
Diversity and patterns of interaction of an anuran–parasite network in a neotropical wetland
Authors: CAMPIÃO K. M. , RIBAS A. , TAVARES L. E. R. 
Published: October 2015

SUMMARYWe describe the diversity and structure of a host–parasite network of 11 anuran species and their helminth parasites in the Pantanal wetland, Brazil. Specifically, we investigate how the heterogeneous use of space by hosts changes parasite community diversity, and how the local pool of parasites exploits sympatric host species of different habits. We examined 229 anuran specimens, interacting with 32 helminth parasite taxa. Mixed effect models indicated the influence of anuran body size, but not habit, as a determinant of parasite species richness. Variation in parasite taxonomic diversity, however, was not significantly correlated with host size or habit. Parasite community composition was not correlated with host phylogeny, indicating no strong effect of the evolutionary relationships among anurans on the similarities in their parasite communities. Host–parasite network showed a nested and non-modular pattern of interaction, which is probably a result of the low host specificity observed for most helminths in this study. Overall, we found host body size was important in determining parasite community richness, whereas low parasite specificity was important to network structure.
Influence of provider mix and regulation on primary care services supplied to US patients
Authors: Richards Michael R. , Polsky Daniel 
Published: October 2015

AbstractAccess to medical care and how it differs for various patients remain key policy issues. While existing work has examined clinic structure’s influence on productivity, less research has explored the link between provider mix and access for different patient types – which also correspond to different service prices. We exploit experimental data from a large field study spanning 10 US states where trained audit callers were randomly assigned an insurance status and then contacted primary care physician practices seeking new patient appointments. We find clinics with more non-physician clinicians are associated with better access for Medicaid patients and lower prices for office visits; however, these relationships are only found in states granting full practice autonomy to these providers. Substituting more non-physician labor in primary care settings may facilitate greater appointment availability for Medicaid patients, but this likely rests on a favorable policy environment. Relaxing regulations for non-physicians may be an important initiative as US health reforms continue and also relevant to other countries coping with greater demands for medical care and related financial strain.
Cardiovascular and pharmacological implications of haem-deficient NO-unresponsive soluble guanylate cyclase knock-in mice
Authors: Thoonen Robrecht , Cauwels Anje , Decaluwe Kelly , Geschka Sandra , Tainsh Robert E. , Delanghe Joris , Hochepied Tino , De Cauwer Lode , Rogge Elke , Voet Sofie , Sips Patrick , Karas Richard H. , Bloch Kenneth D. , Vuylsteke Marnik , Stasch Johannes-Peter , Van de Voorde Johan , Buys Emmanuel S. , Brouckaert Peter 
Published: October 2015

AbstractOxidative stress, a central mediator of cardiovascular disease, results in loss of the prosthetic haem group of soluble guanylate cyclase (sGC), preventing its activation by nitric oxide (NO). Here we introduce Apo-sGC mice expressing haem-free sGC. Apo-sGC mice are viable and develop hypertension. The haemodynamic effects of NO are abolished, but those of the sGC activator cinaciguat are enhanced in apo-sGC mice, suggesting that the effects of NO on smooth muscle relaxation, blood pressure regulation and inhibition of platelet aggregation require sGC activation by NO. Tumour necrosis factor (TNF)-induced hypotension and mortality are preserved in apo-sGC mice, indicating that pathways other than sGC signalling mediate the cardiovascular collapse in shock. Apo-sGC mice allow for differentiation between sGC-dependent and -independent NO effects and between haem-dependent and -independent sGC effects. Apo-sGC mice represent a unique experimental platform to study thein vivoconsequences of sGC oxidation and the therapeutic potential of sGC activators.
Energetics of proton release on the first oxidation step in the water-oxidizing enzyme
Authors: Saito Keisuke , William Rutherford A. , Ishikita Hiroshi 
Published: October 2015

AbstractIn photosystem II (PSII), the Mn4CaO5 cluster catalyses the water splitting reaction. The crystal structure of PSII shows the presence of a hydrogen-bonded water molecule directly linked to O4. Here we show the detailed properties of the H-bonds associated with the Mn4CaO5 cluster using a quantum mechanical/molecular mechanical approach. When O4 is taken as a μ-hydroxo bridge acting as a hydrogen-bond donor to water539 (W539), the S0 redox state best describes the unusually short O4–OW539 distance (2.5 Å) seen in the crystal structure. We find that in S1, O4 easily releases the proton into a chain of eight strongly hydrogen-bonded water molecules. The corresponding hydrogen-bond network is absent for O5 in S1. The present study suggests that the O4-water chain could facilitate the initial deprotonation event in PSII. This unexpected insight is likely to be of real relevance to mechanistic models for water oxidation.
Detoxification of hostplant’s chemical defence rather than its anti-predator co-option drives β-glucosidase-mediated lepidopteran counteradaptation
Authors: Poreddy Spoorthi , Mitra Sirsha , Schöttner Matthias , Chandran Jima , Schneider Bernd , Baldwin Ian T. , Kumar Pavan , Pandit Sagar S. 
Published: October 2015

AbstractThe evolutionary plant–herbivore arms race sometimes gives rise to remarkably unique adaptation strategies. Here we report one such strategy in the lepidopteran herbivore Manduca sexta against its hostplant Nicotiana attenuata’s major phytotoxins, 17-hydroxygeranyllinalool diterpene glycoside, lyciumoside IV and its malonylated forms. We show that alkalinity of larval regurgitant non-enzymatically demalonylates the malonylated forms to lyciumoside IV. Lyciumoside IV is then detoxified in the midgut by β-glucosidase 1-catalysed deglycosylation, which is unusual, as typically the deglycosylation of glycosylated phytochemicals by insects results in the opposite: toxin activation. Suppression of deglucosylation by silencing larval β-glucosidase 1 by plant-mediated RNAi causes moulting impairments and mortality. In the native habitat of N. attenuata, β-glucosidase 1 silencing also increases larval unpalatability to native predatory spiders, suggesting that the defensive co-option of lyciumoside IV may be ecologically advantageous. We infer that M. sexta detoxifies this allelochemical to avoid its deleterious effects, rather than co-opting it against predators.
Fermi states and anisotropy of Brillouin zone scattering in the decagonal Al–Ni–Co quasicrystal
Authors: Rogalev V. A. , Gröning O. , Widmer R. , Dil J. H. , Bisti F. , Lev L. L. , Schmitt T. , Strocov V. N. 
Published: October 2015

AbstractQuasicrystals (QCs) are intermetallic alloys that have excellent long-range order but lack translational symmetry in at least one dimension. The valence band electronic structure near the Fermi energy EF in such materials is of special interest since it has a direct relation to their unusual physical properties. However, the Fermi surface (FS) topology as well as the mechanism of QC structure stabilization are still under debate. Here we report the first observation of the three-dimensional FS and valence band dispersions near EF in decagonal Al70Ni20Co10 (d-AlNiCo) QCs using soft X-ray angle-resolved photoemission spectroscopy. We show that the FS, formed by dispersive Al sp-states, has a multicomponent character due to a large contribution from high-order bands. Moreover, we discover that the magnitude of the gap at the FS related to the interaction with Brillouin zone boundary (Hume–Rothery gap) critically differs for the periodic and quasiperiodic directions.