Miracle-dz/UniFAR-FTUs huggingface dataset:
Gastrointestinal stromal tumors: Do we follow the current guidelines? A self-critique

Background: Despite its rarity, gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract. Several guidelines are currently present where, among other recommendations, mutational analysis and referral to specialized centers have been mentioned. However, this might be difficult to apply at times. Aim: The aim of the study is to explore our experience in the management of GIST. Patients and Methods: Histopathologically-proven GISTs, encountered in our hospital in the period from June 2012 to November 2018, were included in the study. Results: We identified 14 patients, 8 males and 6 females, with a mean age of 58.6 years. Thirteen patients were sporadic GIST, while one was syndromic (associated with neurofibromatosis, multifocal, and arose from the small gut). Twelve patients presented in an emergency situation, while two presented in an elective setting. Thirteen cases were primary localized GISTs and one was metastatic. The organs involved were the stomach in five cases, ileum in four cases, jejunum in two cases, duodenum in two cases, and rectum in one case. In 13 cases, the patient's complaint led to the diagnosis, while in one case, it was discovered incidentally on investigations for another illness. The main clinical features were abdominal pain in five cases, melena and anemia in four cases, hematemesis and melena in one case, rectal bleeding in one case, abdominal pain and mass in one case, intestinal obstruction in one case, and urinary retention and constipation in one case. The mean diameter of the cyst on computed tomography was 8.7 cm. An endoscopic biopsy was performed in six occasions and missed the diagnosis in four of them, whereas percutaneous biopsy was performed in five occasions and was suggestive in two cases and diagnostic in the remaining three. According to a combination of stage, (primary, metastatic, or recurrent) size, risk stratification, mode of presentation, performance status, and comorbidities, treatment was planned. Five patients received surgery only, three patients received surgery followed by imatinib, one patient left to be treated elsewhere, and three patients received surgery to be followed by imatinib but did not show up, one patient received imatinib only, and one patient is still under evaluation. The mean duration of follow-up was 65.7 months, where the disease showed no recurrence in four cases, metastasized to the liver in two cases, and death occurred in two cases, while five cases were lost to follow-up. In this series, no mutational analysis was performed as imatinib was the only drug used, and no referral to specialized centers was done. Conclusion: Surgical resection and kit inhibitors, either alone or in sequence, are the main pillars of treatment of GIST. Risk stratification, in addition to the mode of presentation, the presence or absence of metastasis and comorbidities, dictates which plan to follow. Except for mutational analysis, and referral to specialized centers, our practices are in line with the current guidelines to a reasonable extent.
Generation of Harmonics of Terahertz Radiation in Paraelectrics in a Wide Temperature Range

It is investigated theoretically the generation of higher electromagnetic harmonics of the lower part of terahertz range in nonlinear paraelectrics like SrTiO3. The efficient generation of harmonics is possible when the bias electric field is applied to the crystal to get the quadratic nonlinearity. The initial focusing of the pump first harmonic makes possible to realize the selective generation of proper higher harmonics. In the paraelectric SrTiO3 the efficient harmonic generation occurs in the wide range of temperatures 50 – 200 K.
PM Wind Generator with Reduced Amount of Rare-Earth Magnet Material

This paper presents a new rotor for permanent magnet wind generators aimed to reduce the amount of rare-earth materials. The new rotor configuration has been used for the design of a 10 MW PM generator for direct drive wind turbines in order to reduce their magnet costs. In order to prove its effectiveness, also a conventional PMSG with surface magnets rotor is considered as reference machine for comparison. Using the same geometry and electrical constrains the both PMSGs are developed following an analytical iterative procedure and afterwards using FEA. According to the preliminary results, the new rotor design requires significantly less magnet material compared with the conventional rotor. Investigations done on the 10 MW PMSG shows that with the proposed design the magnet weight can be reduced for about 2.7 tons.
Stop driving me wild!!! Does the wilderness experience influence archaeopsychic behaviours?

During a six week wilderness expedition in the Caribou Mountains, British Columbia, three participants took part in a research project with the aim of investigating how the wilderness experience affected their archaeopsychic behaviours These be haviours are a manifestation of the formative transactions experienced throughout our developing years, the main themes of this model being grounded in the workings of Eric Berne (1964) The three participants completed questionnaires, one to one interviews and recorded their reflections in a personal diary The data highlighted the many variables that potentially influence individual archaeopsychic behaviour All the participants exhibited a change in the dominant driver traits; a poignant point being that the improvement actually increased with time elapsed after the exposure to the wilderness; with two participants also demonstrating a change in terms of dominancy, of their primary and secondary ‘drivers ’ We therefore propose a relationship between the wilderness experience and individual behaviour changes As professional outdoor educators, the positives are apparent; by understanding the behaviour of those for whom we are responsible and that of our own in more detail, a much more conducive environment for personal development and improved teamwork within organisations might be promoted
Requirements for design participation in Open Source Software communities

On the basis of our research on forms of participation in an Open Source Software Design (OSSD) community (Python), we investigate requirements to participate in OSSD, which is seen as a form of distributed participatory design. We outline that design participation is supported by socio-organizational roles, such as boundary-spanners. We assume that design participation, especially for end-users, can be improved by tools enhancing development of common ground, situation and social awareness within OSSD communities.
Data-Driven Extraction of Vehicle States From CAN Bus Traffic for Cyberprotection and Safety

The work develops a data-driven, semi-supervised approach to learn physical relationships of controller area network (CAN) signals from only a limited set of CAN packets. These mappings are then used to develop a hidden Markov model (HMM) of the driver's actions upon which transaction analysis is performed to optimize the real-time identification of the states. The proposed approach builds an image from the CAN data, then trains a convolutional neural network (CNN) to give emission probabilities to predict drivers' actions.
LIFE HISTORY PLASTICITY IN A DAMSELFLY: EFFECTS OF COMBINED TIME AND BIOTIC CONSTRAINTS

Optimal values for life history traits are expected to depend upon environ- mental conditions during development and the period within which development is con- strained (e.g., biotic factors and time constraints, respectively). Theory predicts that life history responses to both biotic factors and time constraints may be both direct and be- haviorally mediated. Few experimental studies of life histories have considered the joint effects of biotic factors and time constraints, and fewer still have been able to disentangle direct from behaviorally mediated effects. We studied such interactions by manipulating the perceived time to the onset of winter, predation risk, and food resources level in larvae of the damselfly Lestes sponsa. In the first experiment (predation 3 time constraint), the presence of a predator caused an overall reduction in foraging activity, development rate, and mass at emergence. However, larvae that had less time available before the end of the season, increased foraging activity and development rate, while mass at emergence de- creased. These results suggest that the observed changes in life history characters were behaviorally mediated in the presence of predators. In contrast, life history responses of time-constrained larvae occurred independently of the behavioral changes and, therefore, were direct. In the second experiment (food level 3 time constraint) larvae under high food levels had a higher foraging activity, increased development rate, and higher growth rates, compared to low food-level treatments. Time-constrained larvae accelerated devel- opment and had a smaller mass at emergence at high food levels than larvae that were not time constrained. In contrast, and opposite to predictions, time-constrained larvae at low food levels had the slowest development rate and the largest mass at emergence. We suggest that larvae in the latter group were aiming to delay emergence to the next season (cohort splitting). Our results suggest that both behaviorally mediated and direct responses to biotic factors and time constraints are a feature of the life history of this damselfly.
Wideband High-Gain Circularly-Polarized Low RCS Dipole Antenna With a Frequency Selective Surface

A low radar cross-section (RCS) wideband circularly-polarized (CP) dipole antenna using a frequency selective surface (FSS) is presented in this paper. A planar dipole antenna consists of a pair of slotted patches fabricated on top and bottom sides of the substrate is designed. The slotted patches are connected through a circular ring, which acts as a delay line to achieve circular polarization. In the proposed configuration, a band-stop FSS is employed for the antenna reflector, which improves the radiation performance and reduces the RCS of the dipole antenna. The impedance bandwidth (S11 ≤−10 dB) of the proposed antenna is 0.95 to 3.1 GHz and 3-dB axial ratio bandwidth (ARBW) is 1.9 to 2.35 GHz. The proposed antenna shows the maximum and average RCS reduction of 20 dB and 6.9 dB, respectively, in the frequency range of 3.7 to 18 GHz. The simulated and measured results show that the maximum gain of the antenna increases by 5.9 dB by using FSS.
A Survey on the Design of Current Comparator

In recent decades, the application demand of current comparator has increased rapidly, which makes the structure of current comparator mature and becomes an important part of many circuits. Current comparator will replace voltage comparator because of its excellent performance. This paper summarizes the recently proposed comparator circuit structures and shows the main parameters which have an impressive influence on the performance of the comparator. A variety of types of current comparator are described, including the traditional current comparator, the compensated current comparator, the current comparator based on CCII (Second Generation Current Conveyor), switched current comparator, current comparator based on reduced structure, etc. This paper could provide guidance for the development of high performance current comparators.
Uncertainty Analyses for 3D Electromagnetic Field Problems in Time-Domain Simulations with the Finite Integration Technique and Polynomial Chaos

Computational electromagnetics recently emerged to the field of assessing stochastic variation in field solutions. We present a time-domain solver to solve electromagnetic field problems that exhibit dependencies on stochastic parameters. We extend the Finite Integration Technique by a stochastic Galerkin projection which results into an augmented system to simulate the evolution of the stochastic information over space and time using the coefficients of the Polynomial Chaos Expansion representing the field quantities. Hereby, the estimates for the statistical variation can be given within a single simulation run without sampling the parameter space. Furthermore, we demonstrate the effectiveness of the method by analysing a univariate setting.
Reduction & emergence in the fractional quantum Hall state

We present the fractional quantum Hall (FQH) effect as a candidate emergent phenomenon. Unlike some other putative cases of condensed matter emergence (such as thermal phase transitions), the FQH effect is not based on symmetry breaking. Instead FQH states are part of a distinct class of ordered matter that is defined topologically. Topologically ordered states result from complex long-ranged correlations between their constituent parts, such that the system displays strongly irreducible, qualitatively novel properties.
Working Paper Series Does Curvature Enhance Forecasting ?

In this paper, we analyze the importance of curvature term struture movements on forecasts of interest rate means. An extension of the exponential three-factor Diebold and Li (2006) model is proposed, where a fourth factor captures a second type of curvature. The new factor increases model ability to generate more volatile and non-linear yield curves, leading to a signi cant improvement of forecasting ability, in special for short-term maturities. A forecasting experiment adopting Brazilian term structure data on Interbank Deposits (IDs) generates statistically signi cant lower bias and Root Mean Square Errors (RMSE) for the double curvature model, for most examined maturities, under three di erent forecasting horizons. Consistent with recent empirical analysis of bond risk premium, when a second curvature is included, despite explaining only a small portion of interest rate variability, it changes the structure of model risk premium leading to better predictions of bond excess returns.
Sparing land for nature: exploring the potential impact of changes in agricultural yield on the area needed for crop production

How can rapidly growing food demands be met with least adverse impact on nature? Two very different sorts of suggestions predominate in the literature: wildlife‐friendly farming, whereby on‐farm practices are made as benign to wildlife as possible (at the potential cost of decreasing yields); and land‐sparing, in which farm yields are increased and pressure to convert land for agriculture thereby reduced (at the potential cost of decreasing wildlife populations on farmland). This paper is about one important aspect of the land‐sparing idea – the sensitivity of future requirements for cropland to plausible variation in yield increases, relative to other variables. Focusing on the 23 most energetically important food crops, we use data from the Food and Agriculture Organisation (FAO) and the United Nations Population Division (UNPD) to project plausible values for 2050 for population size, diet, yield, and trade, and then look at their effect on the area needed to meet demand for the 23 crops, for the developing and developed worlds in turn. Our calculations suggest that across developing countries, the area under those crops will need to increase very considerably by 2050 (by 23% under intermediate projections), and that plausible variation in average yield has as much bearing on the extent of that expansion as does variation in population size or per capita consumption; future cropland area varies far less under foreseeable variation in the net import of food from the rest of the world. By contrast, cropland area in developed countries is likely to decrease slightly by 2050 (by 4% under intermediate projections for those 23 crops), and will be less sensitive to variation in population growth, diet, yield, or trade. Other contentious aspects of the land‐sparing idea require further scrutiny, but these results confirm its potential significance and suggest that conservationists should be as concerned about future agricultural yields as they are about population growth and rising per capita consumption.
Spatially overlapped partners in quantum field theory

In quantum field theory particles are physically defined as what Unruh–De Witt particle detectors observe. By detecting a particle mode A, a reduced density operator for a quantum state of A is constructed. Even if the entire quantum state of the quantum field is pure, the state of A is not pure but mixed due to entanglement between other subsystems. The partner mode B of the field is defined as a purification partner of A such that the AB system in a pure state. We show that, without any fine-tuning of the particle detector design of A, the weighting function of partner B has spatial overlap of that of A. We show a general formula of partner B associated with arbitrarily fixed A of a free field in a general Gaussian state. We demonstrate an example of memory effects in an expanding Freedman–Robertson–Walker universe.
Superior Service Performance through Transformational Leadership: A Cross-level Study of a Large Taiwanese Commercial Bank

A multi-level theoretical framework is proposed in this study, within which we identify transformational leadership behavior as the primary source of the positive influence on service performance through the underlying mechanism of leader-member exchange (LMX). The data for this study are obtained from 23 branches of a large commercial bank in Taiwan, with the samples collected from both managers and employees forming 228 manager-employee dyads, and thereby avoiding common method variance. Our results reveal that both transformational leadership and LMX have significantly positive effects on service performance, with the LMX relationship also playing a mediating role between transformational leadership and service performance. Of further considerable interest is our finding that group cohesiveness appears to be an important moderator enhancing the relationship between transformational leadership and service performance, as well as LMX and service performance. We conclude with a discussion of the theoretical and practical implications of our findings.
Layered double hydroxides as effective adsorbents for U(VI) and toxic heavy metals removal from aqueous media.

Capacities of different synthesized Zn,Al-hydrotalcite-like adsorbents, including the initial carbonate [Zn 4Al 2(OH) 12]·CO 3·8H 2O and its forms intercalated with chelating agents (ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), and hexamethylenediaminetetraacetic acid (HMDTA)) and heat-treated form Zn 4Al 2O 7, to adsorb uranium(VI) and ions of toxic heavy metals have been compared. Metal sorption capacities of hydrotalcite-like adsorbents have been shown to correlate with the stability of their complexes with the mentioned chelating agents in a solution. The synthesized layered double hydroxides (LDHs) containing chelating agents in the interlayer space are rather efficient for sorption purification of aqueous media free from U(VI) irrespective of its forms of natural abundance (including water-soluble bi- and tricarbonate forms) and from heavy metal ions. [Zn 4Al 2(OH) 12]·EDTA·nH 2O is recommended for practical application as one of the most efficient and inexpensive synthetic adsorbents designed for recovery of both cationic and particularly important anionic forms of U(VI) and other heavy metals from aqueous media. Carbonate forms of LDHs turned out to be most efficient for recovery of Cu(II) from aqueous media with <path id="x70" d="M169 380l92 53q26 16 49 16q80 0 128.5 -56t48.5 -133q0 -108 -72.5 -180.5t-176.5 -91.5q-38 1 -69 18v-131q0 -57 13 -70t71 -18v-27h-236v27q49 5 61 17t12 61v452q0 48 -9.5 58.5t-56.5 16.5v24q66 11 145 43v-79zM169 346v-270q37 -39 94 -39q63 0 101.5 50 t38.5 134q0 78 -38.5 123t-95.5 45q-45 0 -100 -43z" /> <path id="x48" d="M729 650v-28q-62 -5 -76 -19.5t-14 -75.5v-404q0 -62 13.5 -76t75.5 -19v-28h-268v28q65 5 79.5 19t14.5 76v199h-341v-199q0 -62 14 -76t76 -19v-28h-263v28q61 5 74.5 19t13.5 76v404q0 62 -14 76t-76 19v28h259v-28q-58 -5 -71 -19t-13 -76v-162h341v162 q0 61 -13.5 75.5t-72.5 19.5v28h261z" /> <path id="x30" d="M241 635q53 0 94 -28.5t63.5 -76t33.5 -102.5t11 -116q0 -58 -11 -112.5t-34 -103.5t-63.5 -78.5t-94.5 -29.5t-95 28t-64.5 75t-34.5 102.5t-11 118.5q0 58 11.5 112.5t34.5 103t64.5 78t95.5 29.5zM238 602q-32 0 -55.5 -25t-35.5 -68t-17.5 -91t-5.5 -105 q0 -76 10 -138.5t37 -107.5t69 -45q32 0 55.5 25t35.5 68.5t17.5 91.5t5.5 105t-5.5 105.5t-18 92t-36 68t-56.5 24.5z" /> owing to precipitation of Cu(II) basic carbonates and Cu(II) hydroxides. Chromate ions are efficiently adsorbed from water only by calcinated forms of LDHs.
Surface Topography of 'Hotspot' Regions from a Single Cell SRF Cavity

Performance of SRF cavities are limited by non-linear localized effects. The variation of local material characters between "hot" and "cold" spots is thus of intense interest. Such locations were identified in a BCP-etched large-grain single-cell cavity and removed for examination by high resolution electron microscopy (SEM), electron-back scattering diffraction microscopy (EBSD), optical microscopy, and 3D profilometry. Pits with clearly discernable crystal facets were observed in both "hotspot" and "coldspot" specimens. The pits were found in-grain, at bi-crystal boundaries, and on tri-crystal junctions. They are interpreted as etch pits induced by surface crystal defects (e.g. dislocations). All "coldspots" examined had qualitatively low density of etching pits or very shallow tri-crystal boundary junction. EBSD revealed the crystal structure surrounding the pits via crystal phase orientation mapping, while 3D profilometry gave information on the depth and size of the pits. In addition, a survey of the samples by energy dispersive X-ray analysis (EDX) did not show any significant contamination of the samples surface.
Allogenarchopsis gen. nov. (Digenea, Derogenidae, Halipeginae) Parasitic in the Intestine of Freshwater Fishes: a Molecular and Morphological Study of Adult and Cercarial Forms

Adults of Genarchopsis yaritanago Shimazu et al., 2011 (Digenea, Derogenidae, Hali- peginae) were found in the intestine of Tanakia lanceolata (Temminck and Schlegel, 1846) (type host), Tanakia limbata (Temminck and Schlegel, 1846) (new host record), Rhodeus ocellatus ocellatus (Kner, 1866) (new host record) and Acheilognathus rhombeus (Temminck and Schlegel, 1846) (new host record) (Cyprinidae, Acheilognathinae) from the Lake Biwa basin in Shiga Prefecture, central Japan. Daughter rediae and cercariae of Cercaria problematica Faust, 1924 were found in Semisulcospira reiniana (Brot, 1874) (Gastropoda, Sorbeoconcha, Pleuroceridae) from the same basin. The cytochrome c oxidase subunit I gene (COI) of the mitochondrial DNA of the adult and cercaria was partially sequenced. Morphological and molecular studies showed that G. yaritanago and C. problematica are the same species, that the original description by Shimazu et al. (2011) includes some errors of taxonomic importance at the generic level, and that G. yaritanago should be removed to another genus. Allogenarchopsis gen. nov. (Halipeginae) is proposed. The type species is Allogenarchopsis yaritanago (Shimazu et al., 2011) comb. nov. The species name of the taxon is changed from A. yaritanago to Allogenarchopsis problematica (Faust, 1924) comb. nov. (syn. C. problematica, Cercaria manei Ito, 1960, G. yaritanago, A. yaritanago). The adult, daughter redia and cercaria are described and figured.