Miracle-dz/UniFAR-FTUs huggingface dataset:
Local differential geometry and generic projections of threefolds

namely we prove essentially that all these lines together fill up at most a fourfold (see Theorem 1 below); equivalently, the generic projection of X to P has no fourfold points that come from collinear quadruples of points on X. The (very classical) subject of generic projections of n folds to P" and the multiple points of such projections has recently come into focus in connection with work of Pinkham [4], Lazarsfeld [2], and Peskine [3], which has shown how certain properties (both known and conjectural) of such projections can be used to establish various cohomological properties of the n folds in question, in particular Castelnuovo regularity. Indeed, Lazarsfeld's paper [2] shows, among other things, that the above statement concerning fourfold points of projections to P is exactly what is needed to establish a sharp Castelnuovo regularity bound for smooth nondegenerate threefolds in P r , r > 9 (see Corollary 3 below). We now proceed with a precise statement. Theorem 1. Let X be an irreducible nondegenerate three-dimensional subvariety of P r , r > 9, whose tangent variety is six-dimensional and let {Ly: y e Y} be a family of lines in P r with the property that for any general y e Y, the part of the scheme-theoretic intersection L i l l supported at smooth points of X has length at least 4. Then we have
Incremental learning method for lung nodule detection based on EWC and feature distillation

The early manifestations of lung cancer are pulmonary nodules, and a computer aided diagnosis (CAD) model can help doctors to diagnose pulmonary nodules. However, when some new samples arrives, the existing model incremental update methods have problems such as catastrophic forgetting and high update spatiotemporal cost. To overcome the above problems, this paper proposes an incremental learning method for lung nodule detection based on elastic weight Consolidation (EWC) and feature distillation. First, lung parenchyma is segmented on CT images; secondly, the original model is optimized based on the elastic weight integration algorithm, the Fisher information matrix is simplified to a parameter weight matrix to reduce the amount of calculation, and then a regularization penalty term is introduced into the update process based on the parameter weight matrix The loss function limits the changes of important parameters to obtain the incrementally updated optimization model; finally, the original model is used as the teacher network, and the optimization model is used as the student network to calculate the feature distillation loss to improve the performance of the optimization model, which is realized without forgetting the learned knowledge. Sufficient fit to new samples. The method in this paper is cross-validated on the LUNA16 dataset. The results show that the method in this paper improves the incremental learning ability of the model, achieves good results in sensitivity and accuracy, and achieves low false positives and reduces space-time overhead.
On the Existence of Trapped Modes in Channels of Arbitrary Cross-section

This article establishes the existence of trapped-mode solutions of a linearized water-wave problem. The fluid occupies a symmetric horizontal channel that is uniform everywhere apart from a confined region which either contains a thin vertical plate spanning the depth of the channel or has indentations in the channel walls. A trapped mode corresponds to an eigenvalue of a non-local Neumann-Dirichlet operator for an elliptic boundary-value problem in the fluid domain. The existence of such an eigenvalue is established by generalizing previous results concerning spectral theory for differential operators to this non-local operator.
The white-browed woodpecker Piculus aurulentus (Temminck, 1821) (Aves: Picidae) as a potential seed disperser of Myrsine umbellata Mart. (Myrsinaceae)

We describe the consumption of fruits of Myrsine umbellata Mart. (Myrsinaceae) by the white-browed woodpecker Piculus aurulentus (Temminck, 1821) based on seeds found in the digestive tract of one specimen collected in an Araucaria forest at Serra do Juncal (22o43’S, 45o53’W), southern Minas Gerais, south-eastern Brazil. It is possible that P. aurulentus is a disperser of seeds of M. umbellata, since these were found intact in the bird digestive tract, completely separated from their pulps, which could facilitate their germination. Keywords: Piciformes, seed dispersal, frugivory, stomach content, Atlantic Forest.
SISTEM INFORMASI AKTIVA TETAP SEBAGAI ANALISA DALAM PENGELOLAAN INVENTARIS

Sistem informasi akuntansi ini menuntut setiap perusahaan untuk meningkatkan efisiensi dan efektifitas kinerja maka dibutuhkan sebuah sistem komputerisasi sehingga kegiatan operasional lebih efektif serta dapat meningkatkan kualitas kerja yang diperoleh dari pemrosesan data yang dikelola oleh instansi sesuai dengan standar akuntansi yang berlaku. Aset tetap (fixed asset) adalah aset yang bersifat jangka panjang atau secara relatif memiliki sifat permanen serta dapat digunakan dalam jangka panjang. Aset ini merupakan aset berwujud karena mempunyai bentuk fisik.Pengelolaan aset pada MA NU 03Sunan Katong Kaliwungu belum dapat mengetahui nilai tiap aset yang berkurang karena tidak adanya perhitungan penyusutan atas aset yang ada sehingga bagian sarana dan prasarana tidak dapat mengetahui secara pasti kapan aset tersebut akan rusak dan aset mana yang harus diganti, ditukar, dijual, dan dibeli kembali. metode garis lurus merupakan metode yang paling sederhana mengasumsikan adanya penggunaan yang konstan dari suatu aset selama masa manfaatnya. Metode ini merupakan metode yang mendasarkan alokasi dari fungsi waktu penggunaan asset. Berdasarkan metode ini biaya depresiasi dihitung dengan mengalokasikan nilai aset yang didepresiasikan selama masa manfaat aset secara sama untuk setiap masa periodenya. Kata Kunci: Aset tetap, Metode Garis Lurus, Depresiasi
Characterizing cable-logging enterprises in Italy: production, workforce, equipment and potential for growth

ABSTRACT Interviews with 51 entrepreneurs indicated that Italian cable-yarding specialist companies are small-scale businesses with a workforce of 3 to 5 operators and an annual production of about 5000 m3 over bark. Their primary piece of equipment is a tower yarder, which relies on a support fleet consisting of adapted farm tractors and excavators. There is a clear divide between alpine and non-alpine entrepreneurs, the latter being less productive and somewhat more versatile than the former. That difference is likely dependent on the different work environment: alpine operators can rely on larger public owners, bigger softwood trees and more valuable timber products, whereas non-alpine loggers are constrained by fragmented private ownerships, smaller hardwood trees (often coppice) and less valuable firewood products. Non-alpine loggers also yard on shorter distances and use smaller towers. Further expansion of cable-logging south of the Alps could be achieved by developing new equipment capable of overcoming those limitations. In that regard, one may consider unguyed towers designed for live skyline operation.
MEASUREMENTS OF THE CORONAL ACCELERATION REGION OF A SOLAR FLARE

The Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) and the Nobeyama Radioheliograph (NoRH) are used to investigate coronal hard X-ray and microwave emissions in the partially disk-occulted solar flare of 2007 December 31. The STEREO mission provides EUV images of the flare site at different viewing angles, establishing a two-ribbon flare geometry and occultation heights of the RHESSI and NoRH observations of ∼16 Mm and ∼25 Mm, respectively. Despite the occultation, intense hard X-ray emission up to ∼80 keV occurs during the impulsive phase from a coronal source that is also seen in microwaves. The hard X-ray and microwave source during the impulsive phase is located ∼6 Mm above thermal flare loops seen later at the soft X-ray peak time, similar in location to the above-the-loop-top source in the Masuda flare. A single non-thermal electron population with a power-law distribution (with spectral index of ∼3.7 from ∼16 keV up to the MeV range) radiating in both bremsstrahlung and gyrosynchrotron emission can explain the observed hard X-ray and microwave spectrum, respectively. This clearly establishes the non-thermal nature of the above-the-loop-top source. The large hard X-ray intensity requires a very large number (>5 × 1035 above 16 keV for the derived upper limit of the ambient density of ∼8 × 109 cm−3) of suprathermal electrons to be present in this above-the-loop-top source. This is of the same order of magnitude as the number of ambient thermal electrons. We show that collisional losses of these accelerated electrons would heat all ambient electrons to superhot temperatures (tens of keV) within seconds. Hence, the standard scenario, with hard X-rays produced by a beam comprising the tail of a dominant thermal core plasma, does not work. Instead, all electrons in the above-the-loop-top source seem to be accelerated, suggesting that the above-the-loop-top source is itself the electron acceleration region.
Static Magnetic Field Interferes with the Physiological Removal of Circulating Apoptotic Lymphocytes

In various cellular systems, including cells of the immune system, a number of biological efiects induced by static magnetic flelds (SMFs) have been reported and difierent mechanisms have been proposed to explain these efiects. Although a number of theoretical mod- els have been proposed, the variety of experimental conditions (intensity, frequency and time windows of the flelds, difiering characteristics of the materials used- cell type, age, treatment) makes contradictory the data present in the literature and the possibility of the replication of the experiments. However, (S)MFs have been reported to perturb distribution of membrane proteins and sugars, cytoskeleton and trans-membrane ∞uxes of difierent ions, especially calcium (Ca 2+ )i. In turn, these alterations could interfere with speciflc physiological activies, like phagocytosis, which are based on receptors, cytoskeleton elements and motor proteins. In a previous work we found that, sinusoidal liver cells quickly recognized and engulfed human lymphocytes exposed for up to 72h to 6mT SMF, by using the same receptors that mediate the clearance of apoptotic cells. Thus, aim of the present work has been to decipher the modiflcations exerted by the SMF on lymphocytes and/or on the process of phagocytose. We analysed the cell surfaces of normal and apoptotic human lymphocytes in the presence or absence of 6mT SMF by immunocyto- chemistry and biochemistry assays. SMF increases, in a time-dependent way, the expression of GD3 ganglyoside and cholesterol on the plasma membrane of normal lymphocytes and prevents GD3 removal on apoptotic-induced cells. Lipid peroxidation of plasma membrane was observed soon after lymphocytes induction of apoptosis and after 72h of SMF exposure. The recognition and the engulfment of the control and apoptotic lymphocytes is modifled by SMF exposure. In fact, normal exposed lymphocytes are recognized by the liver sinusoids at the same extent of the apoptotic non exposed cells. Conversely, the exposure to SMF promoted the binding but delayed the engulfment of apoptotic lymphocytes in in situ as well as in in vitro phagocytose assays. Further studies will clarify the eventual implication of SMF on human health.
High-Resolution Measurements of Local Effectiveness From Discrete Hole Film Cooling

Local adiabatic film cooling effectiveness on a flat plate surface downstream a row of cylindrical holes was investigated. Geometric parameters such as blowing angle and hole pitch, as well as the flow parameters blowing rate and density ratio, were varied in a wide range emphasizing engine relevant conditions. IR thermography was used to perform local measurements of the surface temperature field. A spatial resolution of up to seven data points per hole diameter extending to 80 hole diameters downstream of the ejection location was achieved. Since all technical wall materials have a finite thermoconductivity, a procedure for correcting the measured surface temperature data based on a Finite Element analysis was developed. Heat loss over the back and remnant heat flux within the test plate in lateral and streamwise directions were taken into account. The local effectiveness patterns obtained are systematically analyzed to quantify the influence of the various parameters. As a result, a detailed description of the characteristics of local adiabatic film cooling effectiveness is given. Furthermore, the locally resolved experimental results can serve as a data base for the validation of CFD codes predicting discrete hole film cooling.
Phage therapy: current review and future perspectives

In recent years, antibiotic resistance develops very quickly, while it is difficult to find new antibiotics. It is speculated that by 2050, the number of deaths due to antibiotic resistance will exceed the number of cancer deaths, reaching 10 million, it seems that people will return to the pre-antibiotic era. The problem of drug resistance has become so serious that some researchers looking for alternatives to antibiotics have refocused their attention on phage therapy, a method of using bacterial viruses to cleave pathogens to achieve therapeutic effects. It has the advantages of specificity, lack of cross-resistance to antibiotics, an excellent curative effect on biofilm, short research time, and relatively low development cost. At present, there are more and more successful cases of phage therapy. This paper will review the phage therapy, analyze its advantages and disadvantages so that readers can better understand phage therapy to promote the development of phage-based treatment of bacterial infection.
Spatial distribution of refractive index variations induced in bulk fused silica by single ultrashort and short laser pulses

We correlate phase-contrast microscopy of modification tracks induced by tightly focused single ultrashort and short laser pulses inside fused silica with numerical simulations of nonlinear laser excitation footprints. Different pulse durations on the femtosecond and picosecond range are compared in order to validate the experimental and theoretical observations on the subsequent refractive index variations in a regime where linear and nonlinear contributions play a comparable role. The nature of the laser-induced structural changes depends essentially on the characteristics of pulse propagation in different regions of the irradiated zone. Numerical simulations of laser pulse propagation in the excited region show that accumulation of excess energy and swift nonlinear absorption contribute to the formation of either positive or negative phase-shift regions within the same single-pulse-induced damage trace. The decrease in the refractive index can be unambiguously correlated with the regions of maximum energy deposition during prolonged exposure times.
Detection of microcracks and dark spots in monocrystalline PERC cells using photoluminescene imaging and YOLO-based CNN with spatial pyramid pooling

Two common defects encountered during manufacturing of crystalline silicon solar cells are microcrack and dark spot or dark region. The microcrack in particular is a major threat to module performance since it is responsible for most PV failures and other types of damage in the field. On the other hand, dark region in which one cell or part of the cell appears darker under UV illumination is mainly responsible for PV reduced efficiency, and eventually lost of performance. Therefore, one key challenge for solar cell manufacturers is to remove defective cells from further processing. Recently, few researchers have investigated deep learning as an alternative approach for defect detection in solar cell manufacturing. The results are quite encouraging. This paper evaluates the convolutional neural network based on heavy-weighted You Only Look Once (YOLO) version 4 or YOLOv4 and the tiny version of this algorithm referred here as Tiny-YOLOv4. Experimental results suggest that the multi-class YOLOv4 is the best model in term of mean average precision (mAP) and prediction time, averaging at 98.8% and 62.9 ms respectively. Meanwhile an improved Tiny-YOLOv4 with Spatial Pyramid Pooling scheme resulted in mAP of 91.0% and runtime of 28.2 ms. Even though the tiny-weighted YOLOv4 performs slightly lower compared to its heavy-weighted counterpart, however the runtime of the former is 2.2 order much faster than the later.
Korean Trade in 10 Service Industries and Role of the Won? An Asymmetric Analysis

International trade includes trade not just in goods but also in services. Introduction of internet technology has helped to boost trade in services by more than trade in goods. What has been the role of the exchange rate in this journey? While many studies have investigated the link between the exchange rate and trade in goods, only three studies in the literature have assessed the impact of exchange rate changes on trade in services. Two have used data from the U.S., and one from China. We add to this new emerging literature by assessing the symmetric and asymmetric effects of changes in the real effective exchange rate of the Korean won on Korean trade in 10 service categories with the rest of the world. Considering the symmetric (linear) models and asymmetric (nonlinear) models to be complementary, we find short-run effects of imports and exports of almost all 10 service industries. Short-run effects translate into the long run in little over 50% of industries. These findings did not change significantly when we considered real trade in services versus nominal trade. Our findings were industry-specific.
Ferrite core memories that shaped an industry

The development of reliable, high-speed ferrite core memories that could be mass-produced at low cost was probably the most important innovation that made stored-program computers a practical, commercial reality in the 1950s. Users could now entrust large quantities of data and instructions to memory, making programming easier and job execution faster. The ever increasing demand for more memory reshaped computer systems and, ultimately, the computer industry. The technology had many inventors. Best known are J. W. Forrester of MIT who received from IBM the largest payment on record for any invention to that time and J. A. Rajchman of RCA who, for a time, was awarded most of Forrester's patent claims. Other important inventors include E. Albers-Schonberg, J. P. Eckert, M. K. Haynes, F. W. Viehe, and A. Wang. It was, however, the technology champions, product innovators, and development engineers who played the dominant roles in the success of ferrite core memories.
PROJECTIVE REPRESENTATIONS OF QUIVERS

We prove that P1 →f P2 is a projective representation of a quiver Q=•→• if and only if P1 and P2 are projective left R-modules, f is an injection, and f (P 1)⊂P 2 is a summand. Then, we generalize the result so that a representation M1 →f1 M2 →f2⋯→fn−2 Mn−1→fn−1 Mn of a quiver Q=•→•→•⋯•→•→• is projective representation if and only if each Mi is a projective left R-module and the representation is a direct sum of projective representations.
Calculating the bound spectrum by path summation in action-angle variables

The density of states n(E) is calculated for a bound system whose classical motion is integrable, starting from an expression in terms of the trace of the time-dependent Green function. The novel feature is the use of action-angle variables. This has the advantages that the trace operation reduces to a trivial multiplication and the dependence of n(E) on all classical closed orbits with different topologies appears naturally. The method is contrasted with another, not applicable to integrable systems except in special cases, in which quantization arises from a single closed orbit which is assumed isolated and the trace taken by the method of stationary phase.
Organic-walled dino fl agellate cyst records from a prospective Turonian e Coniacian ( Upper Cretaceous ) GSSP , S ł upia Nadbrze _ zna , Poland

A river section at Słupia Nadbrze _ zna, central Poland, has been proposed as a candidate Turonian e Coniacian (Cretaceous) GSSP, in combination with the Salzgitter-Salder quarry section of Lower Saxony, Germany. Results of a high-resolution (25 cm) palynological study of the boundary interval in the Słupia Nadbrze _ zna section are presented. Terrestrial palynomorphs are rare; marine organic-walled dinoflagellate cysts dominate the palynological assemblage. The dinoflagellate cyst assemblage has a low species richness (5e11 per sample; total of 18 species recorded) and diversity (Shannon index H 1⁄4 0.8 e1.4), dominated by four taxa: Circulodinium distinctum subsp. distinctum; Oligosphaeridium complex; Spiniferites ramosus subsp. ramosus; Surculosphaeridium longifurcatum. Declining proportions of O. complex and S. ramosus subsp. ramosus characterise the uppermost Turonian, with an increased dominance of S. longifurcatum in the lower Coniacian. The Turonian e Coniacian boundary interval includes an acme of C. distinctum subsp. distinctum in the upper Mytiloides scupini Zone, a dinoflagellate cyst abundance maximum in the Cremnoceramus walterdorfensis walterdorfensis Zone, and the highest occurrence of Senoniasphaera turonica in the basal Coniacian lower Cremnoceramus deformis erectus Zone. Most previously reported Turonian e Coniacian boundary dinoflagellate cyst marker species are absent; a shallow-water oligotrophic epicontinental depositional setting, remote from terrestrial influence, likely limited species diversity and excluded many taxa of biostratigraphic value. © 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
A genetic algorithm for optimizing spine layout

Abstract The Genetic Algorithm (GA) and Space-Filling Curve (SFC) are combined along with the use of Taguchi method for finding the optimal combination of parameters: The new algorithm has been tested on 12 cases of spine-type facility layout for four different material handling directions, e.g. clockwise one-way, two-way, clockwise one way with one shortcut and two-way with one shortcut to compare their cost differences. Results obtained in this research are analyzed and compared with those acquired using other algorithms. The efficiency of problem solving using this algorithm exceeds 96% and the optimal solution for a test case consisting of 20 bays is much superior to all other known optimal solutions.