bluuebunny/crossref_metadata_2025 huggingface dataset:
Simple risk score for prediction of haemorrhagic complications after a percutaneous renal biopsy
Authors: Mejía‐Vilet Juan M. , Márquez‐Martínez Manuel A. , Cordova‐Sanchez Bertha M. , Ibargüengoitia Mónica Chapa , Correa‐Rotter Ricardo , Morales‐Buenrostro Luis E.
Published: April 2017

Aim

To derive a simple risk score to predict the individual risk of major complications for patients undergoing a percutaneous renal biopsy procedure of native kidneys.

Methods

The risk score was derived from a cohort of 1205 adult patients subjected to percutaneous renal biopsy and assigned to training and validation datasets. Factors associated with major complications were derived from univariate analysis and then modelled by stepwise multivariate logistic regression. Based on the odds ratio, independent predictors were assigned a weighted integer. The risk score is calculated from the sum of the integers.

Results

The overall incidence of major complications was 3.2%. Independent factors associated with MC were lower pre‐biopsy haemoglobin, lower platelets, higher blood urea nitrogen, documented chronic kidney disease features in pre‐biopsy ultrasound (US) and the presence of haematoma in the post‐biopsy US. A score for pre‐biopsy evaluation included the first four predictors and stratified patients in three categories with increasing risk at higher scores (low‐risk 0.1%, moderate‐risk 3.0% and high‐risk 26.1%). The score demonstrated good discriminative power (AUC = 0.872). The addition of post‐biopsy US findings increased the discriminative power (AUC = 0.938). A higher post‐biopsy risk score was also associated with a higher incidence of MC (low‐risk 0.2%, moderate‐risk 2.7%, high‐risk 16.9%).

Conclusion

The risk of major complications after a percutaneous renal biopsy can be assessed by a simple risk score calculated from readily available information.
Perirhinal accumulation of neuronal alpha‐synuclein in a multiple system atrophy patient with dementia
Authors: Saito Mari , Hara Makoto , Ebashi Momoko , Morita Akihiko , Okada Kyoko , Homma Taku , Sugitani Masahiko , Endo Kentaro , Uchihara Toshiki , Kamei Satoshi
Published: April 2017

We report the case of a 79‐year‐old Japanese woman who developed cerebellar ataxia followed by rigidity, dysautonomia and cognitive disorders, and was thus clinically diagnosed as having possible MSA with dementia. Neuropathological findings demonstrated not only olivopontocerebellar and striatonigral degeneration with frequent glial cytoplasmic inclusions (GCIs), but also degenerative changes in the parahippocampal region, accentuated in the anterior portion of perirhinal cortex, where neuronal cytoplasmic inclusions (NCIs) and NFTs were numerous while GCIs were limited. NCIs were frequent in the deep layer, whereas NFTs were more frequent in superficial cortical layers. Other hippocampal subregions including subiculum, dentate fascia and cornu ammonis were minimally involved. NCIs in the perirhinal cortex showed intense argyrophilia with the Campbell‐Switzer silver impregnation method, but not argyrophilic with the Gallyas method. Most neuronal alpha‐synuclein aggregates in dendrosomatic fraction formed globular/tadpole‐like, and ultrastructurally comprised granular‐coated fine fibrils 12–24 nm in diameter. To the best of our knowledge, alpha‐synuclein‐related neuronal pathology localized in the perirhinal region without hippocampal involvement has not been previously reported in MSA, and may provide clues to elucidate how neuronal pathology evolves in the hippocampal/parahippocampal regions in MSA, particularly in cases with dementia.
Annona species (Annonaceae): a rich source of potential antitumor agents?
Authors: Tundis Rosa , Xiao Jianbo , Loizzo Monica R
Published: April 2017

Plants have provided the basis of traditional medicine systems throughout the world for thousands of years and continue to yield molecules for new remedies. We analyzed studies published from 2009 to 2016 on the Annona species (Annonaceae), including A. coriacea, A. crassifolia, A. hypoglauca, A. muricata, A. squamosa, A. sylvatica, and A. vepretorum, as sources of potential antitumor agents. Here, we report and discuss the mechanisms of action and structure–activity relationships of the most active Annona constituents. Annonaceous acetogenins are one of the most promising classes of natural products, owing to their potential antitumor activity. However, their neurotoxicity should not be underestimated.
Polar and charged extracellular residues conserved among barrier‐forming claudins contribute to tight junction strand formation
Authors: Piontek Anna , Rossa Jan , Protze Jonas , Wolburg Hartwig , Hempel Caroline , Günzel Dorothee , Krause Gerd , Piontek Jörg
Published: April 2017

Claudins (Cldn) form the backbone of tight junction (TJ) strands and thereby regulate paracellular permeability for solutes and water. Polymeric strands are formed by homo‐ and heterophilic cis‐ and trans‐interactions between claudin protomers. Crystal structures of some claudins have been resolved; however, the mechanism by which claudins assemble into TJ strands remains unclear. To elucidate strand architecture, TJ‐like strands were reconstituted in HEK293 cells by claudin transfection. Determinants of prototypic, classic barrier‐forming claudins (Cldn1, ‐3, and ‐5) involved in strand formation were analyzed by mutagenesis. The capability of claudin constructs to interact in trans and to form strands was investigated by cell contact–enrichment assays and freeze‐fracture electron microscopy. Residues in extracellular loops 1 and 2 of the claudins affecting strand formation were identified. Using homology modeling and molecular docking, we tested working concepts for the arrangement of claudin protomers within TJ strands. We show that the charge of Lys65 in Cldn1 and Glu158 in Cldn3, but not of Arg30 or Asp145 in Cldn3, and the polarity of Gln56 and Gln62 in Cldn3 and of Gln57 in Cldn5 are necessary for TJ strand formation. These residues are all conserved among barrier‐forming classic claudins. The results contribute to mechanistic understanding of claudin‐based regulation of paracellular permeability.
Genetic alterations in mesiodens as revealed by targeted next‐generation sequencing and gene co‐occurrence network analysis
Authors: Kim Y Y , Hwang J , Kim H‐S , Kwon H J , Kim S , Lee J H , Lee J H
Published: April 2017

Objective

Mesiodens is the most common type of supernumerary tooth which includes a population prevalence of 0.15%–1.9%. Alongside evidence that the condition is heritable, mutations in single genes have been reported in few human supernumerary tooth cases. Gene sequencing methods in tradition way are time‐consuming and labor‐intensive, whereas next‐generation sequencing and bioinformatics are cost‐effective for large samples and target sizes.

Materials and Methods

We describe the application of a targeted next‐generation sequencing (NGS) and bioinformatics approach to samples from 17 mesiodens patients. Subjects were diagnosed on the basis of panoramic radiograph. A total of 101 candidate genes which were captured custom genes were sequenced on the Illumina HiSeq 2500. Multistep bioinformatics processing was performed including variant identification, base calling, and in silico analysis of putative disease‐causing variants.

Results

Targeted capture identified 88 non‐synonymous, rare, exonic variants involving 42 of the 101 candidate genes. Moreover, we investigated gene co‐occurrence relationships between the genomic alterations and identified 88 significant relationships among 18 most recurrent driver alterations.

Conclusion

Our search for co‐occurring genetic alterations revealed that such alterations interact cooperatively to drive mesiodens. We discovered a gene co‐occurrence network in mesiodens patients with functionally enriched gene groups in the sonic hedgehog (SHH), bone morphogenetic proteins (BMP), and wingless integrated (WNT) signaling pathways.
Comparison of sedation by intranasal dexmedetomidine and oral chloral hydrate for pediatric ophthalmic examination
Authors: Cao Qianzhong , Lin Yiquan , Xie Zhubin , Shen Weihua , Chen Ying , Gan Xiaoliang , Liu Yizhi
Published: April 2017

Background and aim

Pediatric ophthalmic examinations can be conducted under sedation either by chloral hydrate or by dexmedetomidine. The objective was to compare the success rates and quality of ophthalmic examination of children sedated by intranasal dexmedetomidine vs oral chloral hydrate.

Methods

One hundred and forty‐one children aged from 3 to 36 months (5–15 kg) scheduled to ophthalmic examinations were randomly sedated by either intranasal dexmedetomidine (2 μg·kg−1, n = 71) or oral chloral hydrate (80 mg·kg−1, n = 70). The primary endpoint was successful sedation to complete the examinations including slit‐lamp photography, tonometry, anterior segment analysis, and refractive error inspection. The secondary endpoints included quality of eye position, intraocular pressure, onset time, duration of examination, recovery time, discharge time, any side effects during examination, and within 48 h after discharge.

Results

Sixty‐one children were sedated by dexmedetomidine with a success rate of 85.9%, which is significantly higher than that by chloral hydrate (64.3%) [OR 3.39, 95% CI: 1.48–7.76, P = 0.003]. Furthermore, children in the dexmedetomidine group displayed better eye position in anterior segment analysis than in chloral hydrate group median difference. All children displayed stable hemodynamics and none suffered hypoxemia in both groups. Oral chloral hydrate induced higher percentages of vomiting and altered bowel habit after discharge than dexmedetomidine.

Conclusions

Intranasal dexmedetomidine provides more successful sedation and better quality of ophthalmic examinations than oral chloral hydrate for small children.
Acute masseter dystonia in a pediatric patient receiving aripiprazole and methylphenidate following induction of general anesthesia
Authors: LeRiger Michelle , Williams Jasper , Duncan‐Wiebe Greta , Shukry Mohanad
Published: April 2017

An 11‐year‐old male receiving aripiprazole, methylphenidate, and clonidine developed acute masseter dystonia inhibiting tracheal intubation after induction of general anesthesia with propofol and rocuronium. Following emergence, he had trismus and jaw discomfort. Psychiatry consultation suspected an acute dystonic reaction, so diphenhydramine was administered intravenously which resolved symptoms. We suspect chronic aripiprazole and methylphenidate usage combined with propofol administration in the short‐term absence of methylphenidate made this patient susceptible to dystonic reactions.
Diffusion tensor imaging tractography study in bipolar disorder patients compared to first‐degree relatives and healthy controls
Authors: Mahapatra Ananya , Khandelwal Sudhir K. , Sharan Pratap , Garg Ajay , Mishra Nalini K.
Published: April 2017

Aim

We aimed to compare white matter structural changes in specific tracts by diffusion tensor imaging (DTI) tractography in patients with bipolar disorder (BD) I, non‐ill first‐degree relatives (FDR) of the patients, and healthy controls (HC).

Methods

In a cross‐sectional study, we studied right‐handed subjects consisting of 16 euthymic BD I patients, 15 FDR, and 15 HC. The anterior thalamic radiation, uncinate fasciculus, corpus callosum, and cingulum bundle were reconstructed by DTI tractography. Mean fractional anisotropy (FA) and apparent diffusion coefficient (ADC) values were compared for group differences followed by post‐hoc analysis.

Results

The three groups did not differ in terms of sociodemographic variables. There were significant group differences in the FA values among the BD I patients, their FDR, and the HC for the corpus callosum, the dorsal part of the right cingulum bundle, the hippocampal part of the cingulum bundle bilaterally, and the uncinate fasciculus (P < 0.001). The FA values in the patients were significantly lower than in controls, and FDR also showed similar differences; however, they were smaller than those in patients. No significant difference was found between the groups for FA values of the dorsal part of the left cingulum bundle and anterior thalamic radiation. Significant differences were present for ADC values among the groups for the corpus callosum, the dorsal and hippocampal parts of the cingulum, anterior thalamic radiation, and uncinate fasciculus bilaterally (P < 0.01). The FA and ADC values did not correlate significantly with age or any clinical variables.

Conclusion

These findings suggest that BD patients and their FDR show alterations in microstructural integrity of white matter tracts, compared to the healthy population.
Primary nocturnal enuresis: Assessment and treatment at a single referral center
Authors: Arena Salvatore , Patricolo Mario
Published: April 2017

Background

The aim of this study was to investigate the prevalence of primary monosymptomatic and non‐monosymptomatic nocturnal enuresis (PMNE and PNMNE) and associated factors in a major referral center for NE in Abu Dhabi.

Methods

Children referred to the Paediatric Continence Clinic, between 2014 and 2016, for PNE were included in the study. Exclusion criteria were neuropathic bladder, abnormality of the bladder and bowel, urethral stenosis, neurological and psychiatric problems, non‐completion of the diagnostic protocol, and follow up <6 months.

Results

A total of 128 patients were included in the study: 82 boys (64.1%) and 46 girls (35.9%). A total of 42.7% of boys and 8.7% of girls had PMNE, and 57.3% of boys and 91.3% of girls had PNMNE. Constipation was present in 46% of patients. In the male PNMNE group, 74.5% had overactive bladder (OAB), 10.6%, dysfunctional voiding (DV); and 14.9%, OAB + DV. In the female PNMNE group, 35.7% had OAB; 21.4%, DV; 40.5%, OAB + DV; and 2.4%, underactive bladder. A total of 97% and 86 of children with PMNE and PNMNE, respectively, had resolution of NE. Boys had a significantly higher incidence of PMNE, and girls, of DV.

Conclusion

In Abu Dhabi, NE is often associated with bladder dysfunction or DV, mostly in girls, and with constipation. High intake of dry, low fiber foods, along with hot weather and the stress of city living negatively affect the incidence of fecal retention and of NE. A multimodal approach, including the treatment of constipation, led to a satisfactory resolution of PNE in almost 90% of cases.
Brentano's Empiricism and the Philosophy of Intentionality
Authors: Textor Mark
Published: April 2017

Brentano's Thesis that intentionality is the mark of the mental is central to analytic philosophy of mind as well as phenomenology. The contemporary discussion assumes that it is a formulation of an analytic definition of the mental. I argue that this assumption is mistaken. According to Brentano, many philosophical concepts can only be elucidated by perceiving their instances because these concepts are abstracted from perception. The concept of the mental is one of these concepts. We need to understand Brentano's Thesis accordingly: It is a piece of advice on how to become introspectively aware of the distinctive feature of mental phenomena. On this understanding of Brentano's Thesis standard objections to it no longer arise.
Innovation incommensurability and the science park
Authors: Etzkowitz Henry , Zhou Chunyan
Published: April 2017

The gap between science park aspiration and accomplishment is conceptualized as ‘innovation incommensurability,’ the persisting dilemma of a physical structure oriented innovation mechanism. A typology of science park impetuses and growth–analyzing critical elements, goals/ends and paths/means–suggests an appropriate balance between ‘exogenous’ and ‘endogenous’ innovation strategies in various regional circumstances. Alternative strategies of science park development are a ‘strategic research site’ to evaluate the roles of a university–industry–government triple helix in developing the science park model. Innovation incommensurability can be overcome by a longer‐term endogenous strategy combined with significant public investment. Ambitious science park projects, which were either early failures or later lost support, may succeed once a triple helix base is built to achieve an innovation eco‐system.
Characterization of mesenchymal stem cells in bovine endometrium during follicular phase of oestrous cycle
Authors: Lara E , Rivera N , Rojas D , Rodríguez‐Alvarez LL , Castro FO
Published: April 2017

Contents

Stem cells have been postulated as responsible for cell regeneration in highly and continuously regenerative tissues such as the endometrium. Few studies in cattle have identified and specified the presence of stem cells in the endometrium during the oestrous cycle. The aim of this study was to investigate the presence of mesenchymal stem cells (MSCs) in the bovine endometrium during the follicular phase (FP) of the oestrous cycle. Uterine tissue was collected in the time‐frame comprising day 18 of the cycle and ovulation (day 0). We isolated, cultured and expanded four primary cell lines from endometrium and identified byRT‐qPCR the expression of OCT4, SOX2 but not NANOG (undifferentiated/embryonic markers), CD44 (MSCs marker) and c‐KIT (stem cell marker) genes; and the encoded Oct4, Sox2 and Cd44 proteins by Western blot or immunostaining of paraffin‐embedded tissue in endometrium. We demonstrated that cells isolated from bovine endometrium displayed essentially the same gene expression pattern; however, at the protein level, Oct4 and Cd44 were not detected. Besides, they showed typical functional characteristics of MSCs such as fibroblast‐like morphology, plastic adherence, high proliferative capacity, clone formation in vitro and the ability to differentiate into chondrogenic, osteogenic and adipogenic lineages. We obtained for the first time an extensive characterization of undifferentiated cells populations contained in the bovine endometrium during the FP of the oestrous cycle.
Protein sumoylation and phosphorylation intersect in Arabidopsis signaling
Authors: Nukarinen Ella , Tomanov Konstantin , Ziba Ionida , Weckwerth Wolfram , Bachmair Andreas
Published: April 2017

Conjugation of the small ubiquitin‐related modifier (SUMO) to protein substrates has an impact on stress responses and on development. We analyzed the proteome and phosphoproteome of mutants in this pathway. The mutants chosen had defects in SUMO ligase SIZ1, which catalyzes attachment of single SUMO moieties onto substrates, and in ligases PIAL1 and PIAL2, which are known to form SUMO chains. A total of 2657 proteins and 550 phosphopeptides were identified and quantified. Approximately 40% of the proteins and 20% of the phosphopeptides showed differences in abundance in at least one of the analyzed genotypes, demonstrating the influence of SUMO conjugation on protein abundance and phosphorylation. The data show that PIAL1 and PIAL2 are integral parts of the SUMO conjugation system with an impact on stress response, and confirm the involvement of SIZ1 in plant defense. We find a high abundance of predicted SUMO attachment sites in phosphoproteins (70% versus 40% in the total proteome), suggesting convergence of phosphorylation and sumoylation signals onto a set of common targets.
Shifting the Current Clinical Perspective: Isolated Eccentric Exercise as an Effective Intervention to Promote the Recovery of Muscle After Injury
Authors: Lepley Lindsey K. , Butterfield Timothy A.
Published: April 2017

Eccentric exercise is able to mechanically engage muscle, initiating strain-sensing molecules that promote muscle recovery by inducing beneficial adaptations in neural activity and muscle morphology, 2 critical components of muscle function that are negatively altered after injury. However, due to misinterpreted mathematic modeling and in situ and in vitro stretch protocols, a dogma that exposing muscle to eccentric exercise is associated with injury has been perpetuated in the literature. In response, clinicians have been biased toward using concentric exercise postinjury to improve the recovery of muscle function. Unfortunately, this conventional approach to rehabilitation does not restore muscle function, and reinjury rates remain high. Here, the authors present experimental evidence and theoretical support for the idea that isolated eccentric exercise is ideally suited to combat muscle inhibition and muscle strains and is an attractive alternative to concentric exercise.
Families of vector bundles and linear systems of theta divisors
Authors: Brivio Sonia
Published: April 2017

Let [Formula: see text] be a smooth complex projective curve of genus [Formula: see text] and let [Formula: see text] be a point. From Hecke correspondence, any stable bundle on [Formula: see text] of rank [Formula: see text] and determinant [Formula: see text] defines a rational family of semistable vector bundles on [Formula: see text] of rank [Formula: see text] and trivial determinant. In this paper, we study linear systems of theta divisors associated to these families.
Heat transfer by metallic thin film sandwiched in semiconductor lattice
Authors: Belkacemi Ghania , Bourahla Boualem
Published: April 2017

We calculate, theoretically, the coherent phonons transmission and the thermal transfer through sandwiched metallic thin films in semiconductor lattices. The model system consists of a finite thickness of an ultrathin metallic film joining two semi-infinite semiconductor leads. The heterostructure dynamics is analyzed by using the equations of motion for the atomic displacements on the lattice sites, valid for the different temperatures of interest. Phonons transmission and reflection via interface boundary are calculated for the studied semiconductor lattice by employing the matching method. The results are presented for all accessible frequencies in the propagating bands, at variable temperatures and at a given directions of phonons incidence on the boundary. The considered model is applied, in particular, to the Si/Al/Si heterostructure. We note that the interfacial region of the system affects the vibration spectra and the phonon transmittance and modifies its thermal conductivity. This elucidates how the heat transfer depends on the elastic waves transmission according to the spatially disposition of the atomic layers of the heterostructures.
Face recognition algorithm based on Gabor wavelet and locality preserving projections
Authors: Liu Xiaojie , Shen Lin , Fan Honghui
Published: April 2017

In order to solve the effects of illumination changes and differences of personal features on the face recognition rate, this paper presents a new face recognition algorithm based on Gabor wavelet and Locality Preserving Projections (LPP). The problem of the Gabor filter banks with high dimensions was solved effectively, and also the shortcoming of the LPP on the light illumination changes was overcome. Firstly, the features of global image information were achieved, which used the good spatial locality and orientation selectivity of Gabor wavelet filters. Then the dimensions were reduced by utilizing the LPP, which well-preserved the local information of the image. The experimental results shown that this algorithm can effectively extract the features relating to facial expressions, attitude and other information. Besides, it can reduce influence of the illumination changes and the differences in personal features effectively, which improves the face recognition rate to 99.2%.
A Tunable Swing-Reduced Driver in 0.13-μm MTCMOS Technology
Authors: Myderrizi Indrit , Zeki Ali
Published: April 2017

With the increase in demand for high-speed and low-power integrated circuits as technology scales down, low-swing signaling circuit techniques are critical for providing high-speed low-power communications. However, existing low-swing circuits comprise complex designs, power issues (static and dynamic), output voltage swing restrictions or nonadjustable voltage swing levels, leading to lower operation speeds and even larger area footprints. In this paper, a tunable swing-reduced driver (SRD) circuit featuring the mentioned design challenges is presented. The SRD enables low-swing signals with fully controllable output voltage swing that is useful to reduce the power dissipation and delay in the signaling paths. Implemented in UMC 0.13-[Formula: see text][Formula: see text]m multi-threshold CMOS process, the SRD achieves 26 ps propagation delay at 200[Formula: see text]mV output swing for a pulse signal input at 1[Formula: see text]GHz. Post-layout simulations of the proposed SRD and a DAC application circuit, incorporating the SRD, operating at 1[Formula: see text]GHz, validate the design.
The Price of Order
Authors: Bose Prosenjit , Morin Pat , van Renssen André
Published: April 2017

We present tight bounds on the spanning ratio of a large family of ordered [Formula: see text]-graphs. A [Formula: see text]-graph partitions the plane around each vertex into [Formula: see text] disjoint cones, each having aperture [Formula: see text]. An ordered [Formula: see text]-graph is constructed by inserting the vertices one by one and connecting each vertex to the closest previously-inserted vertex in each cone. We show that for any integer [Formula: see text], ordered [Formula: see text]-graphs with [Formula: see text] cones have a tight spanning ratio of [Formula: see text]. We also show that for any integer [Formula: see text], ordered [Formula: see text]-graphs with [Formula: see text] cones have a tight spanning ratio of [Formula: see text]. We provide lower bounds for ordered [Formula: see text]-graphs with [Formula: see text] and [Formula: see text] cones. For ordered [Formula: see text]-graphs with [Formula: see text] and [Formula: see text] cones these lower bounds are strictly greater than the worst case spanning ratios of their unordered counterparts. These are the first results showing that ordered [Formula: see text]-graphs have worse spanning ratios than unordered [Formula: see text]-graphs. Finally, we show that, unlike their unordered counterparts, the ordered [Formula: see text]-graphs with 4, 5, and 6 cones are not spanners.
The 𝔰𝔩3 colored Jones polynomials for 2-bridge links
Authors: Yuasa Wataru
Published: April 2017

Kuperberg introduced web spaces for some Lie algebras which are generalizations of the Kauffman bracket skein module on a disk. We derive some formulas for [Formula: see text] and [Formula: see text] clasped web spaces by graphical calculus using skein theory. These formulas are colored version of skein relations, twist formulas and bubble skein expansion formulas. We calculate the [Formula: see text] and [Formula: see text] colored Jones polynomials of [Formula: see text]-bridge knots and links explicitly using twist formulas.
Link colorings and the Goeritz matrix
Authors: Traldi Lorenzo
Published: April 2017

We discuss the connection between colorings of a link diagram and the Goeritz matrix.
Conceptual Model of Enterprise Architecture Management
Authors: Kotusev Svyatoslav
Published: April 2017

Enterprise architecture (EA) is a description of an enterprise from an integrated business and IT perspective. Enterprise architecture management (EAM) is a management practice embracing all the management processes related to EA aiming to improve business and IT alignment. EAM is typically described as a sequential four-step process: (i) document the current state, (ii) describe the desired future state, (iii) develop the transition plan and (iv) implement the plan. This traditional four-step approach to EAM essentially defines the modern understanding of EA. Based on a literature review, this paper demonstrates that this four-step approach to EAM, though practiced by some companies, is inadequate as a model explaining the EAM phenomenon in general. As a substitute, this paper synthesizes the generic conceptual model of EAM providing a more realistic conceptualization of EAM describing it as a decentralized network of independent but interacting processes, artifacts and actors.
Accelerating dark energy cosmological model in two fluids with hybrid scale factor
Authors: Mishra B. , Sahoo P. K. , Ray Pratik P.
Published: April 2017

In this paper, we have investigated the anisotropic behavior of the accelerating universe in Bianchi V spacetime in the framework of General Relativity (GR). The matter field we have considered is of two non-interacting fluids, i.e. the usual string fluid and dark energy (DE) fluid. In order to represent the pressure anisotropy, the skewness parameters are introduced along three different spatial directions. To achieve a physically realistic solutions to the field equations, we have considered a scale factor, known as hybrid scale factor, which is generated by a time-varying deceleration parameter. This simulates a cosmic transition from early deceleration to late time acceleration. It is observed that the string fluid dominates the universe at early deceleration phase but does not affect nature of cosmic dynamics substantially at late phase, whereas the DE fluid dominates the universe in present time, which is in accordance with the observations results. Hence, we analyzed here the role of two fluids in the transitional phases of universe with respect to time which depicts the reason behind the cosmic expansion and DE. The role of DE with variable equation of state parameter (EoS) and skewness parameters, is also discussed along with physical and geometrical properties.
Offshore Wind Energy: Good Practice in Impact Assessment, Mitigation and Compensation
Authors: Lüdeke Jens
Published: April 2017

Aiming towards good practice in the planning and approval of offshore wind farms suggestions are provided for the amendment of environmental impact assessment (EIA), an effective marine spatial planning and the establishment of marine compensation measure. The investigation is focused on the situation in Germany as a frontrunner in ecological research on offshore wind energy. After 10 years of research in Germany, it is timely to offer a synopsis of the results especially regarding the successful investigations of mitigation measures. The results are based on published data collected in Germany over the last 10 years, as well as international research. The outcomes of the research were validated by interviewing experts using the Delphi method.

Key findings for good practice in impact assessment, mitigation and compensation:

1. EIAs should focus on decision-relevant subjects of protection (i.e. specific bird species and harbour porpoises). 2. There is a strong necessity for thresholds for the approval process. 3. Exclusion of OWFs in hotspots of sensitive species. 4. Application of state-of-the-art mitigation measures particularly against underwater noise to avoid damages of the hearing of porpoises. 5. The introduction of marine compensation measures is strongly suggested.
Controllability and observability of LTV systems -bond graph approach-
Authors: Frih Abderrahim , Chalh Zakaria , Mrabti Mostafa
Published: April 2017

In this paper, a new methodology is proposed to determinate the controllability and the observability matrices of linear time varying systems modeled by bond graph. As the bond graph model can be viewed as a state space representation and as a module (algebraic approach), the determination of controllability and observability matrices is presented with the graphical approach. The equivalence between the two approaches (Graphic, Mathematical) is proposed and a graphical methodology is pointed out directly on the bond graph representation.
Ensemble Empirical Mode Decomposition and Sparsity Measurement as Tools Enhancing the Gear Diagnostic Capabilities of Time Synchronous Averaging
Authors: Rzeszucinski Pawel , Juraszek Michal , Ottewill James R.
Published: April 2017

The paper introduces the concept of exploring the potential of Ensemble Empirical Mode Decomposition (EEMD) and Sparsity Measurement (SM) in enhancing the diagnostic information contained in the Time Synchronous Averaging (TSA) method used in the field of gearbox diagnostics. EEMD was created as a natural improvement of the Empirical Mode Decomposition which suffered from a so-called mode mixing problem. SM is heavily used in the field of ultrasound signal processing as a tool for assessing the degree of sparsity of a signal. A novel process of automatically finding the optimal parameters of EEMD is proposed by incorporating a Form Factor parameter, known from the field of electrical engineering. All these elements are combined and applied on a set of vibration data generated on a 2-stage gearbox under healthy and faulty conditions. The results suggest that combining these methods may increase the robustness of the condition monitoring routine, when compared to the standard TSA used alone.
Scalable Locally Injective Mappings
Authors: Rabinovich Michael , Poranne Roi , Panozzo Daniele , Sorkine-Hornung Olga
Published: April 2017

We present a scalable approach for the optimization of flip-preventing energies in the general context of simplicial mappings and specifically for mesh parameterization. Our iterative minimization is based on the observation that many distortion energies can be optimized indirectly by minimizing a family of simpler proxy energies. Minimization of these proxies is a natural extension of the local/global minimization of the ARAP energy. Our algorithm is simple to implement and scales to datasets with millions of faces. We demonstrate our approach for the computation of maps that minimize a conformal or isometric distortion energy, both in two and three dimensions. In addition to mesh parameterization, we show that our algorithm can be applied to mesh deformation and mesh quality improvement.
Structural and Functional Fibers
Authors: Chang Huibin , Luo Jeffrey , Gulgunje Prabhakar V. , Kumar Satish
Published: April 2017

Historically, fibers are known to be relatively passive materials and are used primarily in textiles. Today, however, fibers with a range of functionalities such as electrical and thermal conductivity, superparamagnetic properties, temperature regulation, energy harvesting, and biomedical capability provide many possibilities. Most man-made fibers today are derived from petroleum, but there is increasing emphasis on making fibers biorenewable. Fibers are also the strongest structural materials available today. Different fiber fabrication technologies, available properties, and some near-term future prospects are discussed.
De volta à Argélia: a encruzilhada etnossociológica de Bourdieu
Authors: Peters Gabriel Moura
Published: April 2017

Os anos de aprendizado “etnossociológico” de Pierre Bourdieu na sociedade argelina têm sido objeto de um interesse acadêmico renovado. Inspirado por questões oriundas dessa literatura recente, o presente artigo explora, primeiramente, como as experiências de Bourdieu em uma Argélia atravessada pela guerra influenciaram os princípios teóricos e metodológicos de sua sociologia madura. Em segundo lugar, o texto mostra que os escritos bourdieusianos de juventude sobre as turbulências históricas por ele presenciadas naquela sociedade exibem temas e perspectivas que destoam das imagens mais comuns do seu trabalho: o assentimento prático à dominação característico da “violência simbólica” dá lugar à resistência aberta, a "cumplicidade ontológica” entre disposições subjetivas e circunstâncias objetivas dá lugar ao seu descompasso histórico, enquanto a suspeição de princípio diante das representações dos agentes leigos dá lugar a uma alta confiança analítica em longos testemunhos pessoais. Conectando as investigações sociológicas de Bourdieu ao seu uso da fotografia, a terceira seção examina as múltiplas funções que a prática de tirar fotos desempenhou em suas excursões etnográficas a comunidades argelinas. Por fim, o ensaio apresenta a conexão entre motivos da teoria da modernização e das teorias do (neo) colonialismo como uma das primeiras sínteses operadas por Bourdieu em sua carreira intelectual.
Invisibilidades cruzadas: uma aproximação ao conceito de o momento decisivo de Henri Cartier-Bresson
Authors: Menezes Paulo
Published: April 2017

Este artigo analisa o que se pode conceber como o conceito de o momento decisivo de Henri Cartier-Bresson, tendo em vista a proliferação de interpretações que as palavras “momento decisivo” guardam em relação ao conceito cunhado por ele. Para investigar a raiz desse conceito analisam-se algumas de suas fotos em referência a outras imagens da história da arte, como o casal Arnolfini, de Van Eyck, a natureza morta, de Willen Kalf, e as pinturas de Vermeer, além das fotografias de Diane Arbus.
A presença da lentidão na cidade e seus efeitos no pensamento urbano contemporâneo
Authors: Costa Thiago de Araújo
Published: April 2017

Buscando cartografar uma vertente do pensamento urbano contemporâneo que se encontra empenhada em debater o alcance político da lentidão nas cidades, prolongando um debate iniciado pelo geógrafo Milton Santos (1926 – 2001), este ensaio apresenta uma breve série de alianças conceituais, assinalando o panorama de seus possíveis rebatimentos na economia do conhecimento. Com esta cartografia é possível acessar o Elogio da Lentidão em relação aos ritmos impostos aos estudos urbanos atualmente, situando a necessidade de operar ralentamentos e desacelerações tanto no espaço urbano quando no âmbito da produção do pensamento urbanístico.
Aspectos arquitetônicos dos clubes de Salvador durante o século XX
Authors: Bierrenbach Ana Carolina de Souza
Published: April 2017

O artigo trata de um tipo específico de arquitetura de recreação que se difunde em Salvador durante o século XX: aquela dos clubes. Pretende-se apresentar e valorar seus usos, suas características e aspectos arquitetônicos, além de apontar suas circunstâncias atuais, tendo-se consciência de que se trata apenas de um texto introdutório. Para tratar do assunto se recorre à utilização das pistas voluntárias e dos rastros involuntários. Pistas voluntárias são aquelas deixadas nos documentos de uma forma clara e repetida, com a intenção de perdurar e indicar determinados relatos dos acontecimentos que devem ser repetidos indefinidamente, tendendo a apontar sempre as mesmas histórias. Os rastros involuntários são aqueles que se apresentam nos documentos de um modo discreto e disperso, sem a intenção de perdurar e de consolidar alguma história. Há ainda a possibilidade das pistas voluntárias se transformarem em rastros involuntários. Embora os clubes tenham um importante papel no cotidiano dos cidadãos locais e na cidade, suas precárias circunstâncias atuais demonstram a dificuldade da manutenção das suas estruturas físicas e das suas memórias.
Olhando a obra de Raul Lino, a pensar em Frank Lloyd Wright: partindo do Arts & Crafts, com a natureza, o orgânico e a casa
Authors: Fernandes José Manuel
Published: April 2017

Analisa-se comparativamente a obra de Frank Lloyd Wright (1867-1959), norte-americano, e de Raul Lino (1879-1974), português – dois arquitectos (quase) contemporâneos, cada um deles expoente na cultura e na sociedade, no seu tempo e no seu espaço de vida e obra. Faz-se o enquadramento, refere-se o contexto históricocultural e os antecedentes da 1ª. época criativa destes autores. Neste quadro referem-se as obras de John Ruskin e de William Morris, criadores do Arts & Crafts, bem como as características deste movimento artístico – tal como as continuações do A&C, no final do séc XIX, na América e na Europa – da Deutscher Werkbund a Sullivan e a Berlage. Sobre Wright e Lino apresenta-se o seu “entendimento do mundo”: os seus temas conceptuais e arquitectónicos, bem como os movimentos estético-culturais associados – “Organic Architecture” e “Casa Portuguesa”. Apresentam-se e analisam-se os “seis princípios” de Wright e os “seis princípios” de Lino –  salientando os aspectos comuns às concepções de ambos os autores. Descrevem-se e exemplificam-se alguns temas e materiais arquitectónicos definidores e comuns, na primeira fase das obras de Wright e de Lino – como o Arco redondo em tijolo nos vãos e a Lareira na sala principal. Estuda-se a concepção da casa, como um todo, nas suas semelhanças e contrastes, em obras concretas dos dois autores. Apresenta-se e analisa-se um tema parcial em obras específicas de ambos os autores: os arcos irradiantes e as arcarias de volta perfeita nos vãos da fachada; bem como o tratamento de uma peça concreta, a lareira. Termina-se com tópicos conclusivos.
Diretrizes para preservação do patrimônio industrial. Vila Ferroviária de Mairinque / SP
Authors: Silva Rafaela Rogato , Oliveira Eduardo Romero de
Published: April 2017

A presente pesquisa propõe o estudo e análise do conjunto ferroviário existente na cidade de Mairinque. Dentre os edifícios que ainda prevalecem da vila, fundada em 1890, encontram-se casas, oficinas, armazém, horto florestal e estação. Dessa forma, buscamos compreender a articulação entre os bens atualmente, que ajuda a definir a relação entre a cidade e o conjunto ferroviário antigo, por meio da identificação e análise: da configuração urbana ocupada por esse conjunto; das ações intervencionistas; e da atual articulação entre os bens ferroviários, a fim de estabelecer diretrizes de preservação adequadas à realidade local. Para tanto, a metodologia de trabalho escolhida inclui: inventário e mapeamento, pesquisa documental e bibliográfica, entrevistas e análise dos dados coletados, levando-se em consideração que os conjuntos ferroviários devem ser preservados conforme diretrizes capazes de criar uma relação entre a cidade atual e o conjunto antigo.
O lote e a maloca: territorialização indigenista, mudanças no saber – fazer arquitetônico e a evolução da paisagem nas aldeias indígenas. Um estudo de caso a partir dos Kaingáng
Authors: Amparo Sandoval dos Santos
Published: April 2017

Este ensaio, com base em pesquisa bibliográfica, apresenta a evolução da moradia indígena ao longo dos séculos, tomando por referência o processo de territorialização indigenista e o avanço dos processos de urbanização e das formas ocidentalizadas de construção sobre os espaços tradicionais da aldeia. A partir da análise paisagística, suas referências serão o lote, forma espacial que irá caracterizar a urbanização no Brasil; e na outra ponta, a maloca, principal referência da habitação tradicional indígena.
As ideias-guia de Bernardo Secchi
Authors: Valva Milena D'Ayala
Published: April 2017

Esse artigo apresenta os aspectos principais da contribuição teórico-projetual do urbanista italiano Bernardo Secchi (1934-2014). Desde a década de 1980 Secchi passou a contribuir ativamente com a publicação de textos em revistas, com pesquisas no Instituto Universitário de Arquitetura de Veneza (IUAV), e com a elaboração de planos e projetos em parceria com a arquiteta Paola Viganò, fazendo das cidades um grande laboratório. A sua produção evidencia uma troca permanente entre pesquisa e experimentação, marcada pelo uso intencional de imagens como maneira de interpretar o mundo e de projetar a cidade. Para esse trabalho foram escolhidos três conceitos principais da obra de Bernardo Secchi,  três “ideias-guias”, um termo inspirado no trabalho do próprio Secchi, cujo significado é o de identificar  conceitos que podem se tornar um instrumento para o planejamento e para ações concretas no espaço.
Realidades criativas do campo estético: hibridismo entre arte e arquitetura digital
Authors: Lima Fábio Ferreira de
Published: April 2017

A arquitetura vem sendo ampliada na sua complexidade pelos recursos da computação, promovendo mudanças significativas nas formas, a renúncia das aparências do âmbito comum e a busca por experiências com versões inusitadas, criando metáforas visuais para um novo mundo. As formas espaciais são criadas a partir de princípios diversos, com muitos motes científicos a explorar, numa utilização intensa e sistemática do meio digital, surgindo assim processos de explorações plásticas comuns às artes digitais. A arquitetura digital pode materializar signos de uma diversidade muito grande de referentes, subvertendo à forma o desejo de uma expressão traduzida num caráter de beleza.
Desempenho termo-energético de edifícios residenciais em clima temperado
Authors: Tavares Márcia Cristina Pereira , Gonçalves Hélder José Perdigão , Bastos Jorge Novais Telles de Faria Corrêa
Published: April 2017

O presente estudo procura interligar aspectos da Arquitetura e da Térmica dos Edifícios visando contribuir para a prática de projeto disponibilizando um conjunto de informações relacionadas com as questões de conforto e consumo de energia, obtidas a partir de um processo metodológico fundamentado numa componente experimental (medições in loco de Verão e Inverno, sobretudo em unidades de edifícios residenciais em Lisboa com áreas de envidraçados superiores a 60% da fachada principal) e numa componente numérica (simulações térmicas recorrendo ao programa dinâmico EnergyPlus, num processo que envolveu modelação e calibração de modelos geométricos representativos de tipologias frequentes); o que permitiu a observação de diferentes parâmetros com possibilidade de comparar o desempenho entre um espectro alargado de soluções correntes (Matriz de soluções) sob um clima tipicamente mediterrâneo como o da cidade de Lisboa. Desta forma, sendo assim apresentado um conjunto de resultados que comprovam a possibilidade de se projetar e construir edifícios residenciais com diferentes áreas de envidraçados, principalmente com grandes proporções, em Clima Temperado.
Invenções de arquitetura: uma análise de Instant City como proposta experimental arquitetônica
Authors: Silvério Neto Adriane
Published: April 2017

Este trabalho investiga como a linguagem arquitetônica foi abordada em Instant City, de Archigram. Foram utilizadas, como fundamentação do tema, a teorização e a aplicação dos textos de Umberto Eco (principalmente Estrutura Ausente), a fim de compreender como se determinam a proposição projetual e as estruturas arquitetônicas nesse projeto, especialmente no que se refere à relação entre percepção espacial, o papel do projeto para a representação de suas proposições e a linguagem arquitetônica nos anos 1960. Para tanto, o projeto e o desenho serão abordados como tema de investigação e linguagem arquitetônica, analisando-se os interesses de seus criadores. Acreditamos que houve, pelo grupo, uma interpretação da arquitetura fragmentada em objetos e um valor atribuído ao projeto como proposição final para Instant City..
Wave–Mean-Flow Interactions in Moist Baroclinic Life Cycles
Authors: Yamada Ray , Pauluis Olivier
Published: April 2017

Previous studies show that the moist Eliassen–Palm (EP) flux captures a greater eddy momentum exchange through form drag than the dry EP flux in the midlatitude climate. This suggests that the eddy moisture flux acts to decrease the baroclinicity of the zonal jet. This study investigates such a mechanism in moist baroclinic life cycles, which are simulated in an idealized general circulation model with large-scale condensation as the only moist process. The runs are analyzed using a linear diagnostic based on the Kuo–Eliassen equation to decompose the jet change into parts driven by individual forcing terms. It is shown that the wave-induced latent heating drives an indirect Eulerian-mean cell on the equatorward flank of the jet, which acts to reduce the baroclinicity in that region. The eddy sensible heat fluxes act to reduce the baroclinicity near the center of the jet. The moist baroclinic forcing strengthens as the amount of initially available moisture increases.

The effect of the eddy moisture flux on the transformed Eulerian-mean (TEM) and isentropic dynamics is also considered. It is shown that the circulation and EP flux on moist isentropes is around 4 times as strong and extends farther equatorward than on dry isentropes. The equatorward extension of the moist EP flux coincides with the region where the baroclinic forcing is driven by latent heating. The moist EP flux successfully captures the moisture-driven component of the baroclinic forcing that is not seen in the dry EP flux.