gebhart/patrepeval huggingface dataset:
Critical effect of fore-aft tapering on galloping triggering for a trapezoidal body (2023)

The critical effect of the windward interior angles of elastically mounted trapezoidal bodies on a galloping instability is numerically investigated in this paper using two methodologies of high-fidelity computational fluid dynamics simulations and data-driven stability analysis using the eigensystem realization algorithm. A micro exploration of the dynamical response is processed to understand the mechanism underpinning the structural amplification at the initial stage of the galloping instability and the competition between wake and structural modes. It is observed that very small changes in the windward interior angle of an isosceles-trapezoidal body can provoke or suppress galloping – indeed, a small decrease or increase (low to $1^\circ$ ) of the windward interior angle from a right angle ( $90^\circ$ ) can result in a significant enhancement and complete suppression, respectively, of the galloping oscillations. This supports our hypothesis that the contraction and/or expansion ( viz ., fore-aft tapering and/or widening) of the cross-section in the streamline direction has potential influences on galloping triggering from the geometrical perspective. The data-driven stability analysis is also applied to verify and analyse this phenomenon from the perspective of modal analysis. The experimental measurements are also conducted in the wind tunnel to support this hypothesis.
A System for Distributed Multi-camera Capture and Processing (2010)

This contribution describes a distributed multi-camera capture and processing system for real-time media production applications. Its main design purpose is to allow prototyping of distributed processing algorithms for free-viewpoint applications, but the concept can be adapted to other (multicamera) applications. The system integrates broadcast components into a distributed IT-based processing system. The problems that are addressed in this contribution are the synchronisation of these sub-systems and the data and control flow. For the synchronisation of the broadcast and IT components we developed a time stamp mechanism based on tightly synchronised PC clocks. This time is used as the master clock of the system. The video frames from the gen-locked multi-camera streams are implicitly synchronised by adjusting their relative timing against this system clock. For the purpose of synchronising the PC clocks two protocols (NTP and PTP) were evaluated. The second main contribution is the processing of multi-camera data in the distributed system. For this purpose a software framework was developed based on a distributed concurrency system implemented in Python.
Polymer Metamaterial Fabrics for Personal Radiative Thermal Management (2017)

We report on the design, fabrication and characterization of flexible polymer metamaterial fabrics that provide passive radiative cooling or heating by utilizing optical resonant effects in polymer microfibers with tailored sizes and composition.
REVIEWS OF MUSIC (1977)

Journal Article REVIEWS OF MUSIC Get access Jenkins, John, Consort Music for Viols in Six Parts, ed. Richard Nicholson and Andrew Ashbee. ( The Viola da Gamba Society/Faber Music, London, 1976, £20.00.) CHRISTOPHER D. S. FIELD CHRISTOPHER D. S. FIELD Search for other works by this author on: Oxford Academic Google Scholar Music and Letters, Volume 58, Issue 4, October 1977, Pages 489–491, https://doi.org/10.1093/ml/58.4.489 Published: 01 October 1977
Brief Announcement (2018)

We investigate stochastic, distributed algorithms that can accomplish separation and integration behaviors in self-organizing particle systems, an abstraction of programmable matter. These particle systems are composed of individual computational units known as particles that have limited memory, strictly local communication abilities, and modest computational power, and which collectively solve system-wide problems of movement and coordination. In this work, we extend the usual notion of a particle system to treat heterogeneous systems by considering particles of different colors. We present a fully distributed, asynchronous, stochastic algorithm for separation, where the particle system self-organizes into segregated color classes using only local information about each particle's preference for being near others of the same color. Conversely, by simply changing the particles' preferences, the color classes become well-integrated. We rigorously analyze the convergence of our distributed, stochastic algorithm and prove that under certain conditions separation occurs. We also present simulations demonstrating our algorithm achieves both separation and integration.
On the Performance of IRS-Assisted Multi-Layer UAV Communications With Imperfect Phase Compensation (2021)

This work presents the symbol error rate (SER) and outage probability analysis of multi-layer unmanned aerial vehicles (UAVs) wireless communications assisted by intelligent reflecting surfaces (IRS). In such systems, the UAVs may experience high jitter, making the estimation and compensation of the end-to-end phase for each propagation path prone to errors. Consequently, the imperfect phase knowledge at the IRS should be considered. The phase error is modeled using the von Mises distribution and the analysis is performed using the Sinusoidal Addition Theorem (SAT) to provide accurate results when the number of reflectors <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$L\leq 3$ </tex-math></inline-formula> , and the Central Limit Theorem (CLT) when <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$L\geq 4$ </tex-math></inline-formula> . The achieved results show that accurate phase estimation is critical for IRS based systems, particularly for a small number of reflecting elements. For example, the SER at 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">−3</sup> degrades by about 5 dB when the von Mises concentration parameter <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\kappa =2$ </tex-math></inline-formula> and <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$L=30$ </tex-math></inline-formula> , but the degradation for the same <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\kappa $ </tex-math></inline-formula> surges to 25 dB when <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$L=2$ </tex-math></inline-formula> . The air-to-air (A2A) channel for each propagation path is modeled as a single dominant line-of-sight (LoS) component, and the results are compared to the Rician channel. The obtained results reveal that the considered A2A model can be used to accurately represent the A2A channel with Rician fading.
Bidirectional effectors of a group I intron ribozyme from Pneumocystis carinii. (1995)

The L-arginine acts stereoselectively on the Pc1.LSU nuclear group I intron of Pneumocystis carinii, competitively inhibiting the first step of the splicing reaction and stimulating the second step. A number of arginine-related compounds are more potent than L-arginine as stimulators and inhibitors. The most potent peptides tested are 10,000 times as effective as L-arginine in inhibiting ribozyme activity, and nearly 400 times as effective as stimulators. This phenomenon indicates that ribozymes, like protein enzymes, can interact with non-substrate low molecular weight compounds, and that non-nucleic acid agents might be developed as drugs acting on RNA targets.
A hybrid Bacillus thuringiensis delta‐endotoxin gives resistance against a coleopteran and a lepidopteran pest in transgenic potato (2002)

Summary Expression of Bacillus thuringiensis delta‐endotoxins has proven to be a successful strategy for obtaining insect resistance in transgenic plants. Drawbacks of expression of a single resistance gene are the limited target spectrum and the potential for rapid adaptation of the pest. Hybrid toxins with a wider target spectrum in combination with existing toxins may be used as tool to mitigate these problems. In this study, Desiree potato plants were genetically modified to resist attack by insect species belonging to the orders Coleoptera and Lepidoptera, through the insertion of such a hybrid gene, SN19 . Transgenic plants were shown to be resistant against Colorado potato beetle larvae and adults, potato tuber moth larvae, and European corn borer larvae. These are the first transgenic plants resistant to pests belonging to two different insect orders. In addition, the target receptor recognition of this hybrid protein is expected to be different from Cry proteins currently in use for these pests. This makes it a useful tool for resistance management strategies.
Postoperative hysterosalpingogram: radiographic-surgical correlation. (1985)

The hysterosalpingograms of 46 patients who underwent previous uterine or tubal surgery were reviewed. Surgical procedures performed included cesarean section, myomectomy, uterine septal repair, tubal reimplantation and reanastomosis, and fimbrioplasty/cuff salpingostomy. The procedures and their resulting hysterosalpingographic appearances are discussed.
Mask Editor : an Image Annotation Tool for Image Segmentation Tasks (2018)

Deep convolutional neural network (DCNN) is the state-of-the-art method for image segmentation, which is one of key challenging computer vision tasks. However, DCNN requires a lot of training images with corresponding image masks to get a good segmentation result. Image annotation software which is easy to use and allows fast image mask generation is in great demand. To the best of our knowledge, all existing image annotation software support only drawing bounding polygons, bounding boxes, or bounding ellipses to mark target objects. These existing software are inefficient when targeting objects that have irregular shapes (e.g., defects in fabric images or tire images). In this paper we design an easy-to-use image annotation software called Mask Editor for image mask generation. Mask Editor allows drawing any bounding curve to mark objects and improves efficiency to mark objects with irregular shapes. Mask Editor also supports drawing bounding polygons, drawing bounding boxes, drawing bounding ellipses, painting, erasing, super-pixel-marking, image cropping, multi-class masks, mask loading, and mask modifying.
Prognostic whole-genome and transcriptome signatures in colorectal cancers (2023)

ABSTRACT Colorectal cancer (CRC) is caused by a sequence of somatic genomic alterations affecting driver genes in core cancer pathways 1 . To understand the functional and prognostic impact of cancer-causing somatic mutations, we analysed the whole genomes and transcriptomes of 1,063 primary CRCs in a population-based cohort with long-term follow-up. From the 96 mutated driver genes, 9 were novel to CRC and 24 to any cancer. Two distinct patterns of pathway co-mutations were observed, timing analyses identified 6 early and 3 late driver gene mutations, and several new signatures of CRC specific mutational processes were uncovered. Mutations in 10 protein-coding genes belonging to the WNT, EGFR, and TGF-β pathways, 2 mitochondrial DNA genes and 3 regulatory elements along with the COSMIC SBS44 signature impacted survival. Gene expression classification yielded 5 prognostic subtypes with distinct molecular features, in part explained by underlying genomic alterations. Microsatellite instable tumours could be divided in two classes with different levels of hypoxia and infiltration of immune and stromal cells. This study constitutes the largest integrated genome and transcriptome analysis of CRC to date, and links mutations, gene expressions and patient outcomes. The identification of prognostic mutations and expression subtypes can guide future efforts to individualize CRC therapy.
Stochastic Optimization of Gas Cycling in Gas Condensate Reservoirs (2014)

Abstract A major challenge in gas condensate reservoirs is to minimize the condensate drop-out which is mostly heavier fractions representing the rich part of the gas accounting for most of its heat capacity and consequently its price. Most widely used technique to improve gas condensate reservoir performance is gas cycling. In this study, gas cycling in the form of produced lean gas re-injection was considered. Parameters which impact the effectiveness of gas cycling processes are often evaluated by performing limited sensitivity studies on all or some parameters. A more efficient technique that uses a stochastic optimization algorithm to automatically optimize the parameters governing the gas cycling process is proposed in this paper. Stochastic optimization of well placement and gas cycling operational parameters has not been reported previously in the literature. Global optimization techniques such as Covariance Matrix Adaptation Evolution Strategy (CMA-ES) and Differential Evolution (DE), both of which are evolutionary algorithms, were used to optimize the producer and injector well locations, fraction of produced gas to be re-injected, and production and injection rates. A modified reservoir model from the Third SPE Comparative Solution Project was used in this study. The optimization was done on several realizations and utilizing a numerical compositional simulator. Net Present Value (NPV) of the gas cycling project and field average oil saturation (FOSAT) were used as the objective functions separately. The optimum parameters and well placement would maximize NPV and minimize FOSAT. The results show that NPV can be significantly increased if the parameters are optimized simultaneously rather than sequentially suggesting the importance of optimizing well placement alongside the operational parameters. The results also show that optimization of well placement, sales volume and production rates remarkably reduces the condensate saturation in the reservoir. Furthermore, DE was seen to be more robust and performed better than CMA-ES. The presented technique provides a base for oil companies to consider stochastic optimization in designing field development plans for gas condensate reservoirs.
Microtopography of metal surfaces influence fibroblast growth by modifying cell shape, cytoskeleton, and adhesion (2007)

Stainless Steel (SS), titanium (cpTi), and Ti-6Al-7Nb (TAN) are frequently used metals in fracture fixation, which contact not only bone, but also soft tissue. In previous soft tissue cytocompatibility studies, TAN was demonstrated to inhibit cell growth in its "standard" micro-roughened state. To elucidate a possible mechanism for this inhibition, cell area, shape, adhesion, and cytoskeletal integrity was studied. Only minor changes in spreading were observed for cells on electropolished SS, cpTi, and TAN. Cells on "standard" cpTi were similarly spread in comparison with electropolished cpTi and TAN, although the topography influenced the cell periphery and also resulted in lower numbers and shorter length of focal adhesions. On "standard" microrough TAN, cell spreading was significantly lower than all other surfaces, and cell morphology differed by being more elongated. In addition, focal adhesion numbers and mean length were significantly lower on standard TAN than on all other surfaces, with 80% of the measured adhesions below a 2-microm threshold. Focal adhesion site location and maturation and microtubule integrity were compromised by the presence of protruding beta-phase microspikes found solely on the surface of standard TAN. This led us to propose that the impairment of focal adhesion numbers, maturation (length), and cell spreading to a possibly sufficient threshold observed on standard TAN blocks cell cycle progress and eventually cell growth on the surface. We believe, as demonstrated with standard cpTi and TAN, that a difference in surface morphology is influential for controlling cell behavior on implant surfaces.
Delayed cotyledon senescence following treatment with a cytokinin; an effect at the level of membranes (1980)

Application of 10 −4 M benzyladenine to Phaseolus vulgaris germinated under etiolating conditions markedly delayed the onset of cotyledon senescence. Weight loss was curtailed, hydrolysis of starch and protein reserves was delayed, and the rate at which hydrolysis products were translocated out of the cotyledons was reduced in treated plants. Microsomal membranes of cotyledons from control seedlings acquired increasing proportions of gel phase lipid as senescence of the tissue intensified. The resulting mixture of liquid-crystalline and gel phase lipid within the membrane matrix renders the membranes leaky and may partially contribute to metabolite translocation out of the cotyledon storage cells during seedling development. This prospect is supported by the observation that in benzyladenine-treated plants the onset of gel phase lipid, and hence of membrane leakiness, was delayed in a manner that corresponded temporally with the decreased rate of metabolite translocation out of the cotyledons.
Hydrophosphination of vinyl-boranes with phosphinoamines (2013)

Phosphinoamine ligands PhN(H)PR(2) (R = iPr 1, tBu 2) react with R(1)CH=CR(2)B(C(6)F(5))(2) (R(1) = Ph, p-FC(6)H(4), nPr, Et, R(2) = H, Ph, Et, C(6)F(5)) to effect uncatalyzed hydrophosphination of the olefinic bond, affording the C(2)BNP five-membered cyclization compounds 3-14. All the compounds are fully characterized and compounds 4, 7, 8 and 9 are studied by X-ray diffraction analysis.
Atrial Pacing Lead Location Alters the Hemodynamic Effects of Atrial‐Ventricular Delay in Dogs with Pacing Induced Cardiomyopathy (2003)

The role of atrial lead location in cardiovascular function in the presence of impaired ventricular dysfunction is unknown. We tested the hypothesis that left atrial (LA) and left ventricular (LV) hemodynamics are affected by alterations in AV delay and are influenced by atrial pacing site in dogs with dilated cardiomyopathy. Dogs (n = 7) were chronically paced at 220 beats/min for 3 weeks to produce cardiomyopathy and then instrumented for measurement of LA, LV end diastolic pressure (LVEDP) and mean arterial pressure (MAP), LA volume, LV short-axis diameter, and aortic and pulmonary venous blood flow. Hemodynamics were measured after instrumentation and during atrial overdrive pacing from the right atrial appendage (RAA), coronary sinus ostium (CSO) and lower LA lateral wall (LAW). The AV node was then ablated, and hemodynamics were compared during dual chamber AV pacing (right ventricular apex) from each atrial lead location at several AV delays between 20 and 350 ms. Atrial overdrive pacing from different sites did not alter hemodynamics. Cardiac output (CO), stroke volume, LVEDP, MAP and +dLVP/dt demonstrated significant (P < 0.05) variation with AV delay during dual chamber pacing. CO was higher during LAW pacing than RAA and CSO pacing (2.3 +/- 0.4 vs 2.1 +/- 0.3 vs 2.0 +/- 0.3 l/min, respectively) at an AV delay of 120 ms. Also, MAP was higher in the LAW than RAA and CSO (65 +/- 9 vs 59 +/- 9 vs 54 +/- 11 mmHg, respectively) at an AV delay of 350 ms. Atrial lead location affects indices of LV performance independent of AV delay during dual chamber pacing in dogs with cardiomyopathy.
LO STATO SFIDATO (1991)

Introduzione Verso la fine del ventesimo secolo, allo stato si aprono prospettive dubbie, sia nei sistemi liberal-democratici che in quelli a partito unico. In entrambi i casi, per quanto in misura diversa e in modi diversi, lo stato svolge un ruolo assolutamente centrale nella gestione del processo sociale, assorbe e controlla una parte assai cospicua del prodotto sociale, riceve ed elabora una grande quantità di richieste 1 . In entrambi i tipi, tuttavia, i modi in cui lo stato fa fronte a questi compiti sono da qualche tempo divenuti oggetto di preoccupazione e critica in misura forse maggiore che nelle precedenti fasi della sua vicenda storica.
Photovoltaic and photoconductivity effect in thin-film phototransistors based on a heterocyclic spiro-type molecule (2007)

We reported on photovoltaic and photoconductivity effects as the underlying mechanism in thin-film phototransistors based on 2,2′,6,6′-Tetraphenyl-4,4′-spirobi[cyclopenta[2,1-b;3,4-b′]dithiophene]. The responsivity and the ratio of photocurrent to dark current were 25 A/W and 290, respectively. Our devices also exhibited a field-effect mobility of (1−2)×10−4 cm2∕V s and an ON/OFF ratio of ∼103. Hysteresis in the transfer curve was observed after the curves were measured from the ON-state to the OFF-state and vice versa. In this case, the gate voltage (at drain bias −20 V and drain current −1 nA) shifted by 8 V at an optical power of ∼20 μW.
Leukocyte subgroup distribution and morphology in blood of premature and full-term newborn babies studied by the cell microarray (2019)

Both the ratio of different leukocyte subgroup content and the leukocyte morphology in peripheral blood of newborns are important in diagnosis of several diseases including combined immunodeficiency and neonatal septicemia. There is a need for development of screening methods for parallel study of the leukocyte morphology and population structure in the newborn peripheral blood. We aimed to determine the relative abundance of different leukocyte subsets and to study their morphology in full-term and premature newborn babies and healthy adult volunteers using the cell-binding microarray – a transparent support with immobilized antibodies against leukocyte cluster-of-differentiation antigens. The work was supported by the Scientific council and approved by the ethical committee of the Centre. We have studied the peripheral blood of 12 full-term newborns (38–40 weeks gestation), 9 premature newborns (22–32 weeks gestation) and 18 healthy adults. The relative abundance of the leukocyte and their morphology were determined using the cell-binding microarray including antibodies against CD2, СD3, СD4, CD5, СD7, CD8, CD10, СD11b, CD11c, CD13, CD14, CD15, CD16, CD19, CD20, CD22, CD25, CD33, CD38, CD41a, CD45, CD45RA, CD45RO, CD61, CD64, CD117, CD123, HLA-DR. The percentage of leukocytes positive for every of the studied surface CD antigens among the peripheral blood mononuclear cells of full-term and preterm newborn babies and healthy adults determined on the cell–binding microarray are in good agreement with published flow cytometry data. CD11b+ leukocytes both in premature and full-term newborns included up to 21% myelocytes and 27% metamyelocytes. The reported data can be used as reference values in cell-binding microarray application in diagnosis of combined immunodeficiency or neonatal septicemia.
Generation of G-to-A and C-to-U Changes in HIV-1 Transcripts by RNA Editing (2000)

RNA editing involves posttranscriptional alterations of messenger RNA (mRNA) sequences modifying the information content encoded by the genetic message. Here, it is shown that, in chronically infected H9 cells, human immunodeficiency virus-type 1 (HIV-1) mRNAs undergo guanine-to-adenine (G-to-A) and cytosine-to-uracil (C-to-U) changes. G-to-A modification in the untranslated region of exon 1 was present only in spliced HIV-1 mRNAs. The creation of stop codons in HIV-1 mRNAs may function to control the translation of viral proteins, such as viral protein R, that are involved in the regulation of HIV-1 expression and the survival of chronically infected cells.