cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Topological phases in the presence of disorder and longer-range couplings
Creators: name: Francica, Gianluca
name: Tiburzi, Edoardo Maria
name: Dell'Anna, Luca
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the combined effects of disorder and range of the couplings on the phase diagram of one-dimensional topological superconductors. We consider an extended version of the Kitaev chain where hopping and pairing terms couple many sites. Deriving the conditions for the existence of Majorana zero modes, we show that either the range and the on-site disorder can greatly enhance the topological phases characterized by the appearance of one or many Majorana modes localized at the edges. We consider both a discrete and a continuous disorder distribution. Moreover we discuss the role of correlated disorder which might further widen the topological regions. Finally we show that in the purely long-range regime and in the presence of disorder, the spatial decay of the edge modes remains either algebraic or exponential, with eventually a modified localization length, as in the absence of disorder.
description: 14 pages, 11 figures
Additional file 1 of Transcribed sex-specific markers on the Y chromosome of the oriental fruit fly, Bactrocera dorsalis
Creators: name: Carraretto, Davide
name: Nidchaya Aketarawong
name: Cosimo, Alessandro Di
name: Manni, Mosè
name: Scolari, Francesca
name: Valerio, Federica
name: Malacrida, Anna R.
name: Gomulski, Ludvik M.
name: Gasperi, Giuliano
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1. Primer pairs based on the 4 contigs.
Chin Tremors Associated with Paroxetine in a Patient with Pancreatic Adenocarcinoma
Creators: name: John, Preethi
name: McConnell, Kathleen
name: Saif, Muhammad Wasif
Publisher: name: JOP. Journal of the Pancreas
Year: 2013
Subjects: Anxiety; Depression; Pancreatic Neoplasms; Paroxetine; Tremor

description: Context There have been many cases of medication-induced tremors. We report a patient who developed significant chin tremors after the administration of paroxetine. Case report A 68-year-old Vietnamese female with a past medical history including GIST and pancreatic cancer status post Whipple procedure and six months of adjuvant chemotherapy with gemcitabine presented with symptoms of anxiety for which she was treated with paroxetine. Within 2 weeks she developed chin tremors which resolved after paroxetine was discontinued. Conclusions To our knowledge, this is the first case report of a temporary chin tremor associated with paroxetine. The exact mechanism of this phenomenon is unclear. However, it has been suggested that movement disorders such as chin tremors may be related to elevated serotonin levels causing an inhibition of central dopamine.
description: JOP. Journal of the Pancreas, Vol 14, No 6 (2013): November - p. 603-693
Neutrinos Oscillations with Long-Base-Line Beams (Past, Present and very near Future)
Creators: name: Stanco, Luca
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We overview the status of the studies on neutrino oscillations with accelerators at the present running experiments. Past and present results enlighten the path towards the observation of massive neutrinos and the settling of their oscillations. The very near future may still have addiction from the outcome of the on-going experiments. OPERA is chosen as a relevant example justified by the very recent results released.
description: 14 pages, 10 figures, to appear in the Proceedings of the Int. Conf. Beyond the Standard Models of Particle Physics, Cosmology and Astrophysics (BEYOND 2010), 1-6 February 2010, Cape Town, South Africa
Random soups, carpets and fractal dimensions
Creators: name: Nacu, Serban
name: Werner, Wendelin
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We study some properties of a class of random connected planar fractal sets induced by a Poissonian scale-invariant and translation-invariant point process. Using the second-moment method, we show that their Hausdorff dimensions are deterministic and equal to their expectation dimension. We also estimate their low-intensity limiting behavior. This applies in particular to the "conformal loop ensembles" defined via Poissonian clouds of Brownian loops for which the expectation dimension has been computed by Schramm, Sheffield and Wilson.
description: To appear in J. London Math. Soc
title: Cerebellar intracellular calcium signaling and proapoptotic/proinflammatory protein changes common to motor dysfunctions with divergent etiologies
Creators: name: Lamont, Matthew G.
Publisher: name: Memorial University of Newfoundland
Year: 2020

description: Introduction Binge drinking among adolescents is an ongoing public health concern. Although binge drinking can also be harmful to adults, the adolescent population is more susceptible to aberrant neurological changes as their brains are still undergoing significant development. The waddles (wdl) mouse is characterized by a namesake waddling gait due to a homozygous mutation of the Car8 gene. Carbonic anhydrase type 8 (CAR8) controls the intracellular release of calcium (Ca²⁺) from internal stores. Both models display a similar cerebellar based ataxia which is why they were chosen for comparison. Methods Groups of pre-adolescent post-natal day (PND 26) and adolescent (PND 34) rats underwent a series of behavioral tests designed to assess memory, anxiety regulation, and motor function. Subjects were first exposed to either ethanol or plain air through a vapour chamber apparatus for five consecutive days (two hours per day). Rota-rod testing was conducted to characterize the wdl mutation and ethanol treatment effects on motor output. Acute cerebellar slices from wdl mice were subsequently utilized for fluorescent calcium imaging experiments. Western blotting was used for protein quantification in the homogenized cerebella of both models. Results Behavioral testing using the rota-rod, cage-hang, novel object recognition, light-dark box, and elevated plus maze apparatuses showed significantly decreased object memory and measures of anxiety-related behaviors in ethanol treated subjects. Western blotting indicated elevated levels of proinflammatory/proapoptotic proteins in the cerebella of ethanol treated and wdl animals. Younger homozygous wdl mice outperformed their older cohorts on the rota-rod. Heterozygotes, which were thought to be free of motor impairment, displayed motor learning deficiencies. Calcium imaging revealed significant attenuation of cerebellar granule cell somatic Ca²⁺ signaling in homozygous mice. Conclusion Differences on anxiety tests indicate a failure of behavioral inhibition in the ethanol treated group. There are also impairments to motor coordination and object memory, which involve the cerebellar and hippocampal brain regions, respectively. When taken together with work on the wdl mouse, these findings suggest disruptions in cerebellar circuitry hampering proper neuronal communication have drastic consequences for behavioral output of the cerebellum.
Mucinous Cystic Neoplasm in Heterotopic Pancreas Presenting as Colonic Polyp
Creators: name: Abraham, Joji
name: Agrawal, Vinita
name: Behari, Anu
Publisher: name: JOP. Journal of the Pancreas
Year: 2013
Subjects: Choristoma; Colonic Neoplasms; Pancreas

description: Context Pancreatic heterotopia in itself is rare in the colon and to the best of our knowledge a neoplasm arising in a heterotopic tissue in the colon has not been reported. We herein report a pancreatic cystic neoplasm arising from heterotopic pancreatic tissue in colon. Case report A 44-year-old lady presented with a history of lower abdominal colic, associated with mucoid loose stools 10-15 times/day. Fecal occult blood was positive on two occasions. On examination, a vague mass was palpable in the left upper quadrant of abdomen. Colonoscopy showed a polypoid growth at the splenic flexure of colon, which on biopsy was reported to be an inflammatory polyp. She underwent a laparoscopic converted to open left hemicolectomy. Post-operatively she developed a intra-abdominal collection which formed a controlled pancreatic fistula after percutaneous drainage. Histopathology revealed pancreatic heterotopia with pancreatic mucinous cystic neoplasm. Conclusion Despite advances in patient care, preoperative diagnosis of heterotopic pancreas is difficult.
description: JOP. Journal of the Pancreas, Vol 14, No 6 (2013): November - p. 603-693
Additional file 8 of Transcribed sex-specific markers on the Y chromosome of the oriental fruit fly, Bactrocera dorsalis
Creators: name: Carraretto, Davide
name: Nidchaya Aketarawong
name: Cosimo, Alessandro Di
name: Manni, Mosè
name: Scolari, Francesca
name: Valerio, Federica
name: Malacrida, Anna R.
name: Gomulski, Ludvik M.
name: Gasperi, Giuliano
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 8: Table S2. Primers for Representational Difference Analysis (RDA). The R- primers were used in the preparation of the initial amplicon representations, and the J- and N- primers were used for odd and even hybridization-amplifications, respectively.
Maternal ADHD symptoms and parenting stress : the roles of personality and parenting self-efficacy beliefs
Creators: name: Williamson, David Kenneth
Publisher: name: University of British Columbia
Year: 2016

description: ADHD symptoms in adults are consistently related to the experience of stress in a variety of domains. One domain that often elicits feelings of stress is parenting, and it is not clear to what extent maternal ADHD symptoms are directly related to the stress that mothers feel as a parent and to what extent this relationship is mediated by other variables. This dissertation examined whether parenting self-efficacy beliefs mediate the relationship between maternal ADHD symptoms and parenting stress. Further, this mediation was hypothesized to be conditional on the levels of maternal neuroticism. In this study, 120 mothers of 6-12 year old children completed an online study, and they also provided collateral informants who reported on the mother’s level of ADHD symptoms and neuroticism. Maternal ADHD symptoms were found to be significantly associated with parenting stress, but this relationship was partially mediated by parenting self-efficacy beliefs. Maternal neuroticism was related to parenting stress, parenting self-efficacy beliefs, and maternal ADHD symptoms, but did not moderate the mediation. However, follow-up exploratory analyses revealed that parenting self-efficacy beliefs are central in mediating the relationship between a variety of mother-centered variables and parenting stress. In addition, the indirect effect of parenting self-efficacy beliefs on the relationship between maternal ADHD symptoms and parenting stress is better accounted for by positive and negative parenting behavior and by maternal feelings of warmth and tenderness towards their child. The results highlight the importance of self-efficacy beliefs in the functioning of mothers, and that awareness of a mother’s psychological symptoms is not sufficient to understand her experience of parenting self-efficacy beliefs or parenting stress.
Projective symmetry group classification of Abrikosov fermion mean-field ansätze on the square-octagon lattice
Creators: name: Maity, Atanu
name: Ferrari, Francesco
name: Thomale, Ronny
name: Mandal, Saptarshi
name: Iqbal, Yasir
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We perform a projective symmetry group (PSG) classification of symmetric quantum spin liquids with different gauge groups on the square-octagon lattice. Employing the Abrikosov fermion representation for spin-$1/2$, we obtain $32$ $SU(2)$, $1808$ $U(1)$ and $384$ $\mathbb{Z}_{2}$ algebraic PSGs. Constraining ourselves to mean-field parton ansätze with short-range amplitudes, the classification reduces to a limited number, with 4 $SU(2)$, 24 $U(1)$ and 36 $\mathbb{Z}_{2}$, distinct phases. We discuss their ground state properties and spinon dispersions within a self-consistent treatment of the Heisenberg Hamiltonian with frustrating couplings.
description: 28 pages, 8 figures, 5 tables
Architectural Support for Global Smart Spaces
Creators: name: Dearle, Alan
name: Kirby, Graham
name: Morrison, Ron
name: McCarthy, Andrew
name: Mullen, Kevin
name: Yang, Yanyan
name: Connor, Richard
name: Welen, Paula
name: Wilson, Andy
Publisher: name: arXiv
Year: 2010
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: A GLObal Smart Space (GLOSS) provides support for interaction amongst people, artefacts and places while taking account of both context and movement on a global scale. Crucial to the definition of a GLOSS is the provision of a set of location-aware services that detect, convey, store and exploit location information. We use one of these services, hearsay, to illustrate the implementation dimensions of a GLOSS. The focus of the paper is on both local and global software architecture to support the implementation of such services. The local architecture is based on XML pipe-lines and is used to construct location-aware components. The global architecture is based on a hybrid peer-to-peer routing scheme and provides the local architectures with the means to communicate in the global context.
description: 4th International Conference on Mobile Data Management (MDM 2003)
Causal transformation of Gödel-type space-times in conformal field theory
Creators: name: Gusin, Pawel
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Gödel-type metrices are considered as backgrounds of the sigma-models. In the conformal field theory such backgrounds are deformed by the exactly marginal operators. We examinate, how the closed time-like curves (CTC's) transform under such deformations.
description: 13
Management of Advanced Pancreatic Cancer with Gemcitabine Plus Erlotinib: Efficacy and Safety Results in Clinical Practice
Creators: name: Diaz Beveridge, Robert
name: Alcolea, Vicent
name: Aparicio, Jorge
name: Segura, Ángel
name: García, Jose
name: Corbellas, Miguel
name: Fonfría, María
name: Giménez, Alejandra
name: Montalar, Joaquin
Publisher: name: JOP. Journal of the Pancreas
Year: 2014
Subjects: erlotinib; gemcitabine; Pancreatic Neoplasms

description: Context The combination of gemcitabine and erlotinib is a standard first-line treatment for unresectable, locally advanced or metastatic pancreatic cancer. We reviewed our single centre experience to assess its efficacy and toxicity in clinical practice. Methods Clinical records of patients with unresectable, locally advanced or metastatic pancreatic cancer who were treated with the combination of gemcitabine and erlotinib were reviewed. Main outcome measures Univariate survival analysis and multivariate analysis were carried out to indentify independent predictors factors of overall survival. Results Our series included 55 patients. Overall disease control rate was 47%: 5% of patients presented complete response, 20% partial response and 22% stable disease. Median overall survival was 8.3 months). Cox regression analysis indicated that performance status and locally advanced versus metastatic disease were independent factors of overall survival. Patients who developed acne-like rash toxicity, related to erlotinib administration, presented a higher survival than those patients who did not develop this toxicity. Conclusions Gemcitabine plus erlotinib doublet is active in our series of patients with advanced pancreatic cancer. This study provides efficacy and safety results similar to those of the pivotal phase III clinical trial that tested the same combination.
description: JOP. Journal of the Pancreas, Vol 15, No 1 (2014): January - p. 1-83
Gemcitabine as Salvage Treatment in Patients with Poorly Differentiated Pancreatic Neuroendocrine Tumors: A Case Series
Creators: name: Saif, Muhammad Wasif
name: Kaley, Kristin
name: Rodriguez, Teresa
name: Garcon, Marie Carmel
Publisher: name: JOP. Journal of the Pancreas
Year: 2014
Subjects: Carcinoid Tumor; Drug Therapy; gemcitabine; Neuroendocrine Tumors; Pancreatic Neoplasms

description: Context Poorly differentiated neuroendocrine carcinoma of the pancreas is a rare and aggressive tumor. The combination of etoposide and cisplatin is considered as the first-line treatment, but no recommendations exist for further treatment after progression. Case series We report here case series of three patients who received gemcitabine as salvage chemotherapy in patients with poorly differentiated neuroendocrine carcinoma of the pancreas. All the three patients achieved clinical benefit with manageable toxicities. The survival was 5.5, 8, and 9 months respectively after the beginning of gemcitabine in these three patients. Conclusions This case series of patients with poorly differentiated neuroendocrine carcinoma of the pancreas who received gemcitabine as salvage chemotherapy suggests that gemcitabine could be an effective salvage treatment. Future studies to investigate gemcitabine in this setting are warranted.
description: JOP. Journal of the Pancreas, Vol 15, No 1 (2014): January - p. 1-83
Trion clustering structure and binding energy in 2D semiconductor materials: Faddeev equations approach
Creators: name: Mohseni, K.
name: Hadizadeh, M. R.
name: Frederico, T.
name: da Costa, D. R.
name: Chaves, A. J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this work, we develop the basic formalism to study trions in semiconductor layered materials using the Faddeev equations in momentum space for three different particles lying in two dimensions. We solve the trion Faddeev coupled integral equations for both short-range one-term separable Yamaguchi potential and Rytova-Keldysh (RK) interaction applied to the MoS$_2$ layer. We devise two distinct regularization methods to overcome the challenge posed by the repulsive electron-electron RK potential in the numerical solution of the Faddeev equations in momentum space. The first method regulates the repulsive interaction in the infrared region, while the second regulates it in the ultraviolet region. By extrapolating the trion energy to the situation without screening, the two methods gave consistent results for the MoS$_2$ layer with a trion binding energy of $-49.5(1)$~meV for the exciton energy of $-753.3$~meV. We analyzed the trion structure for the RK and Yamaguchi potentials in detail, showing their overall similarities and the dominant cluster structure, where the strongly bound exciton is weakly bound to an electron. We found that this property is manifested in the dominance of two of the Faddeev components over the one where the hole is a spectator of the interacting electron pair.
description: 16 pages, 11 figues, 8 tables
Primary Squamous Cell Carcinoma of the Ampulla of Vater
Creators: name: Bolanaki, Helen
name: Giatromanolaki, Alexandra
name: Sivridis, Efthimios
name: Karayiannakis, Anastasios J
Publisher: name: JOP. Journal of the Pancreas
Year: 2014
Subjects: Ampulla of Vater /pathology /surgery; Carcinoma, Squamous Cell /pathology /surgery; Pancreaticoduodenectomy

description: Context Squamous carcinoma of the ampulla of Vater is a very rare tumor with only three cases been reported so far. Case report Here, we report the case of a 68-year-old man who presented with painless obstructive jaundice, general fatigue, loss of appetite and weight loss. Laboratory tests revealed hypochromic anemia. Total and direct bilirubin, alkaline phosphatase, liver enzymes, carbohydrate antigen 19-9 (CA 19-9) and carcinoembryonic antigen (CEA) were all elevated. Abdominal ultrasonography and computed tomography showed a distended gallbladder, dilatation of the intra- and extra-hepatic bile ducts and enlargement of the pancreatic head. Endoscopic retrograde cholangiopancreatography revealed a bulging papilla with infiltrative growth at the ampulla of Vater but endoscopic biopsies were inconclusive. The patient was treated with classical Whipple’s pancreaticoduodenectomy. Histopathological examination showed a moderately differentiated squamous cell carcinoma. Multiple serial sectioning of the tumor specimen failed to detect an adenomatous component. Regional lymph nodes and resection margins were free of tumor and the disease was classified as stage IIA (T3N0M0) according to the TNM system. Adjuvant treatment was not given. Despite curative resection, multiple liver metastases developed after four months and the patient succumbed to progressive hepatic failure 5 months after the operation. Conclusion Primary pure squamous cell carcinoma of the ampulla of Vater is a very rare histological type of carcinoma. Clinical characteristics and optimal treatment are obscure. Primary surgical treatment with curative intent should be performed although this type of carcinoma associates with dismal prognosis.
description: JOP. Journal of the Pancreas, Vol 15, No 1 (2014): January - p. 1-83
Spectrum of Magnetic Resonance Imaging Findings in Pancreatic and Other Abdominal Manifestations of Von Hippel-Lindau Disease in a Series of 23 patients: A Pictorial Review
Creators: name: Graziani, Rossella
name: Mautone, Simona
name: Vigo, Mario
name: Manfredi, Riccardo
name: Opocher, Giuseppe
name: Falconi, Massimo
Publisher: name: JOP. Journal of the Pancreas
Year: 2014
Subjects: Kidney Diseases, Cystic; Kidney Neoplasms; Magnetic Resonance Imaging; Non functioning pancreatic endocrine tumor; Pancreatic Cyst; von Hippel-Lindau Disease

description: Context Von Hippel Lindau disease is a rare autosomal dominantly inherited multisystem disorder characterized by development of benign and malignant tumors. The abdominal manifestation of the syndrome are protean. Magnetic resonance plays an important role in identification of abdominal abnormalities and follow-up of lesions. Objective To describe magnetic resonance imaging findings and patterns of pancreatic and other principal abdominal manifestations in a series of von Hippel-Lindau (VHL) disease patients and to review literature. Methods We retrospectively reviewed abdominal magnetic resonance studies performed in 23 patients (10 males, 13 females) diagnosed of VHL. Results In all examined patients abdominal involvement was present. The pancreatic imaging findings detected were: unilocular cystic lesions (6/23: 26.1%); serous cystadenomas (11/23: 47.8%), including diffuse lesions (8/23: 34.8%); solid neuroendocrine tumors (8/23: 34.8%); cystic neuroendocrine tumors (1/23: 4.3%). The renal findings detected were: simple renal cysts (18/23: 78.3%); complex renal cysts (13/23: 56.5%), including benign lesions (10/23: 43.5%) and malignant lesions (3/23: 13.0%); renal carcinomas (11/23: 47.8%) and 5 of these (45.5%) were multiple and bilateral. Five patients (21.7%) presented pheochromocytoma (4 of these were bilateral; 80.0%) and 1 patient (4.3%) presented cystadenoma of the epididymis. Conclusions In VHL disease patients, magnetic resonance imaging plays an essential role in the identification of pancreatic and other abdominal lesions, in their follow-up, in the screening of asymptomatic gene carriers, and in their long-term surveillance.
description: JOP. Journal of the Pancreas, Vol 15, No 1 (2014): January - p. 1-83
Spectrum sensing for cognitive radios : improving robustness to impulsive noise
Creators: name: Renard, Julien
Publisher: name: University of British Columbia
Year: 2016

description: Many different types of promising spectrum sensing algorithms for Cognitive Radio (CR) have already been developed. However, many of these algorithms lack robustness with respect to signal statistical parameters uncertainties, such as the noise variance or the shape of its distribution (often assumed to be simply Gaussian). In conjunction with the low Signal-to-Noise Ratio (SNR) requirements, this lack of robustness can often render interesting sensing algorithms impractical for real-life applications. In this thesis, we primarily focus on the impact of heavy-tail noise distributions on different CR detectors and the use of signal limiters (mostly the spatial sign function) to improve their robustness to such noise distributions. Introducing a non-linear transformation of the received signal prior to its processing by the detector fundamentally changes the signal distribution which in turn modifies the distribution of the detector statistic. In order to parametrize the detector and study its performance, it is then necessary to know the shape of the modified distribution. Three types of detectors are investigated: a generic second-order cyclic-feature detector, a Scaled-Largest Eigenvalue (SLE) detector studied in the context of stationary time-series and a new Sequential Likelihood Ratio Test (SLRT) detector. The analysis conducted for each detector revolves around the influence of its parameters, the distribution of the detector statistic and several comparisons with similar detectors for various detection scenarios. Our results indicate that at the cost of a moderate performance loss in a Gaussian noise environment, all the detectors fitted with a signal limiter become robust to impulsive noise and noise parameters uncertainties. We provide analytical approximations for the detectors statistical distribution that allow us to use the detectors in such configurations as well as to study their performance for different signal limiters and noise distributions.
Pancreatic Metastasis from a Solitary Fibrous Tumor of the Central Nervous System
Creators: name: Osuga, Takahiro
name: Hayashi, Tsuyoshi
name: Ishiwatari, Hirotoshi
name: Ono, Michihiro
name: Yoshida, Makoto
name: Kimura, Yasutoshi
name: Hasegawa, Tadashi
name: Sato, Yasushi
name: Sato, Tsutomu
name: Miyanishi, Koji
name: Takimoto, Rishu
name: Kobune, Masayoshi
name: Kato, Junji
Publisher: name: JOP. Journal of the Pancreas
Year: 2014
Subjects: Endoscopic Ultrasound-Guided Fine Needle Aspiration; Immunochemistry; Neoplasm Metastasis; Pancreas; Solitary Fibrous Tumors

description: Context Solitary fibrous tumor of the central nervous system is uncommon, with only around 200 reported cases. Further, extracranial metastasis is extremely rare, and only 5 cases of hematogenous metastases have been reported so far. To the best of our knowledge, there have been no reports of solitary fibrous tumor of the central nervous system metastasizing to the pancreas. Case report A 62-year-old woman was referred for evaluation of a pancreatic mass, which was strongly suspected to be a neuroendocrine tumor. However, the histological findings and immunohistochemical profile indicated the presence of a solitary fibrous tumor. Because the medical history revealed previous transcranial resection for intracranial meningioma 16 years ago, we conducted a pathological review of the brain specimen obtained by the first operation and found that it had the same histology and immunohistochemical profile as the current endoscopic ultrasound-guided fine-needle aspiration specimen. Consequently, the final diagnosis, on the basis of the brain specimen, was changed from meningioma to solitary fibrous tumor of the central nervous system, and the pancreatic mass was diagnosed as metastasis from solitary fibrous tumor of the central nervous system. The patient underwent middle pancreatectomy; the pancreatic specimen also had the same histology and immunohistochemical profile as the brain specimen. Conclusion Histological findings and immunohistochemical profile obtained by EUS-FNA are invaluable for the correct diagnosis to avoid excessive surgical procedures.
description: JOP. Journal of the Pancreas, Vol 15, No 1 (2014): January - p. 1-83
HBV- and HCV-Related Infections and Risk of Pancreatic Cancer
Creators: name: Fiorino, Sirio
name: Cuppini, Andrea
name: Castellani, Gastone
name: Bacchi-Reggiani, Maria Letizia
name: Jovine, Elio
Publisher: name: JOP. Journal of the Pancreas
Year: 2013
Subjects: Carcinoma, Hepatocellular; Hepacivirus; Hepatitis B virus; Pancreatic Carcinoma; Pancreatic Neoplasms; Risk Factors

description: Pancreatic carcinoma is one of the most lethal cancers in humans. The poor prognosis of this malignancy depends on several factors, such as: lack of early symptoms, advanced stage at detection, early metastatic spread and no effective systemic treatment. To date, only few risk factors for this malignancy are known; therefore, considerable efforts are required to identify additional causative agents involved in the process of pancreatic carcinogenesis. In the last years, a large series of epidemiological investigations have suggested that both bacteria and viruses may play a important role in the initiation and progression of several animal and human cancers. In particular, some studies have showed that hepatitis B (HBV) and hepatitis C (HCV) viruses, two hepatotropic pathogens with well-known oncogenic properties for liver, may be detected also in extra-hepatic tissues, such as pancreas. The aim of this paper is to briefly report the results of available studies, assessing the possible association between HBV/HCV and pancreatic cancer development as well as to discuss the limiting factors of these researches.
description: JOP. Journal of the Pancreas, Vol 14, No 6 (2013): November - p. 603-693
Solitons in Open N=2 String Theory
Creators: name: Hamanaka, Masashi
name: Huang, Shan-Chi
name: Kanno, Hiroaki
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The open N=2 string theory is defined on the four-dimensional space-time with the split signature (+,+,-,-). The string field theory action of the open N=2 string theory is described by the four-dimensional Wess-Zumino-Witten (WZW_4) model. Equation of motion of the WZW_4 model is the Yang equation which is equivalent to the anti-self-dual Yang-Mills equation. In this paper, we study soliton-type classical solutions of the WZW_4 model in the split signature by calculating the action density of the WZW_4 model. We find that the action density of the one-soliton solutions is localized on a three-dimensional hyperplane. This shows that there would be codimension-one-solitonic objects, or equivalently, some kind of three-branes in the open N=2 string theory. We also prove that in the asymptotic region of the space-time, the action density of the n-soliton solutions is a ``nonlinear superposition'' of n one-solitons. This suggests the existence of intersecting n three-branes in the N=2 strings. Finally we make a reduction to a (1+2)-dimensional real space-time to calculate energy densities of the soliton solutions. We can successfully evaluate the energy distribution for the two-soliton solutions and find that there is no singularity in the interacting region. This implies the existence of smooth intersecting codimension-one branes in the whole region. Soliton solutions in the Euclidean signature are also discussed.
description: 54 pages, 2 figures; v2: minor changes; v3: minor changes; v4: a reference added, typos corrected, published version
Secondary Varicocele Caused by Pancreatic Pseudocyst Obstructing Testicular Venous Drainage
Creators: name: Aswani, Yashant
name: Hira, Priya
Publisher: name: JOP. Journal of the Pancreas
Year: 2013
Subjects: Varicocele; Pancreatic Pseudocyst; Pancreatitis, Chronic

description: A pseudocyst is a fluid/debris collection that occurs as a complication of pancreatitis. It can be symptomatic and cause compression of the surrounding structures. Our case report highlights a 29-year-old male who presented with secondary varicocele on left side caused by a huge pseudocyst seen to compress the left renal and testicular veins.
description: JOP. Journal of the Pancreas, Vol 14, No 6 (2013): November - p. 603-693
On the number of unlabeled vertices in edge-friendly labelings of graphs
Creators: name: Krop, Elliot
name: Lee, Sin-Min
name: Raridan, Christopher
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Let $G$ be a graph with vertex set $V(G)$ and edge set $E(G)$, and $f$ be a 0-1 labeling of $E(G)$ so that the absolute difference in the number of edges labeled 1 and 0 is no more than one. Call such a labeling $f$ \emph{edge-friendly}. We say an edge-friendly labeling induces a \emph{partial vertex labeling} if vertices which are incident to more edges labeled 1 than 0, are labeled 1, and vertices which are incident to more edges labeled 0 than 1, are labeled 0. Vertices that are incident to an equal number of edges of both labels we call \emph{unlabeled}. Call a procedure on a labeled graph a \emph{label switching algorithm} if it consists of pairwise switches of labels. Given an edge-friendly labeling of $K_n$, we show a label switching algorithm producing an edge-friendly relabeling of $K_n$ such that all the vertices are labeled. We call such a labeling \textit{opinionated}.
description: 7 pages, accepted to Discrete Mathematics, special issue dedicated to Combinatorics 2010
Kokkos-Based Implementation of MPCD on Heterogeneous Nodes
Creators: name: Halver, Rene
name: Junghans, Christoph
name: Sutmann, Godehard
Publisher: name: arXiv
Year: 2022
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Performance (cs.PF)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The Kokkos based library Cabana, which has been developed in the Co-design Center for Particle Applications (CoPA), is used for the implementation of Multi-Particle Collision Dynamics (MPCD), a particle-based description of hydrodynamic interactions. It allows a performance portable implementation, which has been used to study the interplay between CPU and GPU usage on a multi-node system. As a result, we see most advantages in a homogeneous GPU usage, but we also discuss the extent to heterogeneous applications, using both CPU and GPU concurrently.
The exact susceptibility of the spin-S transverse Ising chain with next-nearest-neighbor interactions
Creators: name: Minami, Kazuhiko
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The zero-field susceptibility of the spin-S transverse Ising chain with next-nearest-neighbor interactions is obtained exactly. The susceptibility is given in an explicit form for S=1/2, and expressed in terms of the eigenvectors of the transfer matrix for general spin S. It is found that the low-temperature limit is independent of spin S, and is divergent at the transition point.
description: 18 pages, 3 figures, J.Phys.Soc.Jpn., in press
Probing dark matter haloes of spiral galaxies at poorly explored distances using satellite kinematics
Creators: name: Yegorova, I. A.
name: Pizzella, A.
name: Salucci, P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the results of a pilot project designed to study the distribution of dark matter haloes out to very large radii in spiral galaxies. As dynamical probe we use their rotation curves and the motions population of satellite galaxies. In this pilot stage, we observed seven late-type spiral galaxies of about the same luminosity M_R ~ -22 (and approximately the same mass). We investigate the kinematics of these galaxies, and the radial and angular distribution of their satellites. Using VIMOS at the VLT, we carried out a spectroscopic survey in seven 14' x 14' fields each around a late-type isolated spiral galaxy. We obtained radial velocities and spatial distributions for 77 candidate satellites. After removing the interlopers, we are left with 61 true satellites. In combination with the rotation curves of the primary galaxies, satellites are used to probe the gravitational potential of the primaries and derive the dark matter halo properties by means of standard mass modeling techniques. We find (a) that the dark matter haloes of luminous spirals (M_R ~ -22) have virial radii of ~400 kpc and virial masses of 3.5 x 10^12 Msun; (b) that the radial velocity and angular distributions of the satellites around the primaries are isotropic; and (c) that the resulting mass distribution is in good agreement with that found in the optical regions of spirals and described by the universal rotation curve of spirals once extrapolated to large radii. The results obtained in this pilot phase of the project are already interesting and limited only by small number statistics. The full project involving an order of magnitude more targets, would very likely provide us with a definitive picture of the dark matter distribution around spirals out to their virial radii and beyond.
description: 10 pages, 12 figures, accepted for publication in A&A. An innovative review on the issue of Dark Matter in Galaxies can be downloaded at http://www.sissa.it/ap/dmg/dmaw_presentation.html
Optimizing Staggered Multigrid for Exascale performance
Creators: name: Ayyar, Venkitesh
name: Brower, Richard
name: Clark, M. A.
name: Wagner, Mathias
name: Weinberg, Evan
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Adaptive multi-grid methods have proven very successful in dealing with critical slow down for the Wilson-Dirac solver in lattice gauge theory. Multi-grid algorithms developed for Staggered fermions using the Kähler-Dirac preconditioning~\cite{Brower:2018ymy} have shown remarkable success. In this work, we discuss the performance of this staggered multi-grid algorithm in four dimensions. We also demonstrate that offloading some components of a multi-shift solve to a multi-grid solver leads to a significant performance improvement in an existing MILC spectrum workflow on the Summit and Selene supercomputers.
description: Submission to Proceedings of Lattice 2022: the 39th International Symposium on Lattice Field Theory, Bonn, Germany
Ocean predictions and observations in response to the climate emergency (Webinar 16 September 2021)
Creators: name: Keenlyside, Noel
name: O'Carroll, Anne
name: Oltmanns, Marilena
name: Payne, Mark
name: Berx, Bee
name: Ortega, Pablo
name: Coath, Martin
Publisher: name: Zenodo
Year: 2021

description: Satellite event at the UN Ocean Decade, full set of presentations. Noel Keenlyside (UIB/NERSC), Opening & setting the broader picture Marilena Oltmanns (NOC), What can ocean observations tell us about our climate? Anne O’Carroll (EUMETSAT), Remote sensing and the importance of sea surface temperature in the climate modelling Pablo Ortega (Barcelona Supercomputing Center), Exploiting satellite observations to improve the predictive capacity in the Arctic, including its climate impacts Mark Payne (Danish Meteorological institute), From climate predictions to climate services and link to fishery Bee Berx (Marine Scotland Science), From climate/ocean science to policy and decision-making: Scotland and the global climate change Wrap up and closure: Mark Payne (Danish Meteorological Institute)
Data class-specific all-optical transformations and encryption
Creators: name: Bai, Bijie
name: Wei, Heming
name: Yang, Xilin
name: Mengu, Deniz
name: Ozcan, Aydogan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Diffractive optical networks provide rich opportunities for visual computing tasks since the spatial information of a scene can be directly accessed by a diffractive processor without requiring any digital pre-processing steps. Here we present data class-specific transformations all-optically performed between the input and output fields-of-view (FOVs) of a diffractive network. The visual information of the objects is encoded into the amplitude (A), phase (P), or intensity (I) of the optical field at the input, which is all-optically processed by a data class-specific diffractive network. At the output, an image sensor-array directly measures the transformed patterns, all-optically encrypted using the transformation matrices pre-assigned to different data classes, i.e., a separate matrix for each data class. The original input images can be recovered by applying the correct decryption key (the inverse transformation) corresponding to the matching data class, while applying any other key will lead to loss of information. The class-specificity of these all-optical diffractive transformations creates opportunities where different keys can be distributed to different users; each user can only decode the acquired images of only one data class, serving multiple users in an all-optically encrypted manner. We numerically demonstrated all-optical class-specific transformations covering A-->A, I-->I, and P-->I transformations using various image datasets. We also experimentally validated the feasibility of this framework by fabricating a class-specific I-->I transformation diffractive network using two-photon polymerization and successfully tested it at 1550 nm wavelength. Data class-specific all-optical transformations provide a fast and energy-efficient method for image and data encryption, enhancing data security and privacy.
description: 27 Pages, 9 Figures, 1 Table
Spin polarization and correlation of quarks from glasma
Creators: name: Kumar, Avdhesh
name: Müller, Berndt
name: Yang, Di-Lun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the interaction of strong color fields in the glasma stage of high-energy nuclear collisions with the spins of quarks and antiquarks. We employ the perturbative solution of the quantum kinetic theory for the spin transport of (massive) quarks in a background color field governed by the linearized Yang-Mills equation and derive expressions for the quark-spin polarization and quark-antiquark spin correlation at small momentum in terms of field correlators. For the Golec-Biernat Wüsthoff dipole distribution the quark-spin polarization vanishes, but the out-of-plane spin correlation of quarks and antiquarks is nonzero. Our order-of-magnitude estimate of the correlation far exceeds that caused by vorticity effects, but does not fully explain the data for vector meson alignment. We identify possible mechanisms that could further increase the predicted spin correlation.
description: 36 pages, 5 figures, some errors corrected, conclusions unchanged, matched journal version
An Efficient Algorithm For Chinese Postman Walk on Bi-directed de Bruijn Graphs
Creators: name: Kundeti, Vamsi
name: Rajasekaran, Sanguthevar
name: Dinh, Hieu
Publisher: name: arXiv
Year: 2010
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Sequence assembly from short reads is an important problem in biology. It is known that solving the sequence assembly problem exactly on a bi-directed de Bruijn graph or a string graph is intractable. However finding a Shortest Double stranded DNA string (SDDNA) containing all the k-long words in the reads seems to be a good heuristic to get close to the original genome. This problem is equivalent to finding a cyclic Chinese Postman (CP) walk on the underlying un-weighted bi-directed de Bruijn graph built from the reads. The Chinese Postman walk Problem (CPP) is solved by reducing it to a general bi-directed flow on this graph which runs in O(|E|2 log2(|V |)) time. In this paper we show that the cyclic CPP on bi-directed graphs can be solved without reducing it to bi-directed flow. We present a ?(p(|V | + |E|) log(|V |) + (dmaxp)3) time algorithm to solve the cyclic CPP on a weighted bi-directed de Bruijn graph, where p = max{|{v|din(v) - dout(v) > 0}|, |{v|din(v) - dout(v) < 0}|} and dmax = max{|din(v) - dout(v)}. Our algorithm performs asymptotically better than the bidirected flow algorithm when the number of imbalanced nodes p is much less than the nodes in the bi-directed graph. From our experimental results on various datasets, we have noticed that the value of p/|V | lies between 0.08% and 0.13% with 95% probability.
Gastric Ectopic Pancreas: Not Always an Innocent Bystander
Creators: name: Kalaitzakis, Evangelos
name: Elebro, Jacob
name: Johansson, Jan
Publisher: name: JOP. Journal of the Pancreas
Year: 2013
Subjects: Abdominal Pain; Endosonography; Accessory pancreas

description: No abstract available
description: JOP. Journal of the Pancreas, Vol 14, No 6 (2013): November - p. 603-693
Anion-polarisation-directed short-range-order in antiperovskite Li$_2$FeSO
Creators: name: Coles, Samuel W.
name: Falkowski, Viktoria
name: Geddes, Harry S.
name: Pérez, Gabriel E.
name: Booth, Samuel G.
name: Squires, Alexander G.
name: O'Rourke, Conn
name: McColl, Kit
name: Goodwin, Andrew L.
name: Cussen, Serena A.
name: Clarke, Simon J.
name: Islam, M. Saiful
name: Morgan, Benjamin J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Short-range ordering in cation-disordered cathodes can have a significant effect on their electrochemical properties. Here, we characterise the cation short-range order in the antiperovskite cathode material Li$_2$FeSO, using density functional theory, Monte Carlo simulations, and synchrotron X-ray pair-distribution-function data. We predict partial short-range cation-ordering, characterised by favourable OLi$_4$Fe$_2$ oxygen coordination with a preference for polar cis-OLi$_4$Fe$_2$ over non-polar trans-OLi$_4$Fe$_2$ configurations. This preference for polar cation configurations produces long-range disorder, in agreement with experimental data. The predicted short-range-order preference contrasts with that for a simple point-charge model, which instead predicts preferential trans-OLi$_4$Fe$_2$ oxygen coordination and corresponding long-range crystallographic order. The absence of long-range order in Li$_2$FeSO can therefore be attributed to the relative stability of cis-OLi$_4$Fe$_2$ and other non-OLi$_4$Fe$_2$ oxygen-coordination motifs. We show that this effect is associated with the polarisation of oxide and sulfide anions in polar coordination environments, which stabilises these polar short-range cation orderings. We propose similar anion-polarisation-directed short-range-ordering may be present in other heterocationic materials that contain cations with different formal charges. Our analysis also illustrates the limitations of using simple point-charge models to predict the structure of cation-disordered materials, where other factors, such as anion polarisation, may play a critical role in directing both short- and long-range structural correlations.