bluuebunny/crossref_metadata_2025_split huggingface dataset:
Desmodium cajanifolium (tropical tick trefoil).
Authors: Vélez-Gavilán Jeanine 
Published: April 2021

Abstract

Desmodium cajanifolium is a perennial shrub considered as invasive in Hawaii, USA, by Frohlich and Lau (2012), who reported it as a weedy species naturalised along roadsides, open forests and secondary vegetation on the Big Island and Kaua'i. At the same time, Benitez et al. (2012) report D. cajanifolium as a species that is rarely found along roadsides and in forests in Hawaii. D. cajanifolium is not listed as an invasive species on Pacific Islands Ecosystems at Risk (PIER, 2020). No details about its effects over other species or habitats are given.Desmodium cajanifolium is listed as potentially invasive in Cuba, being classified as a species with a tendency to proliferate in some areas and producing vast amounts of diaspores with a high dispersal capacity (Oviedo Prieto et al., 2012). It is considered as uncommon in parts of its native distribution (Flora of Nicaragua, 2020) and as scattered throughout its range (Flora of Panama, 2020).
Bambusa tuldoides (punting pole bamboo).
Authors: Rojas-Sandoval Julissa 
Published: April 2021

Abstract

Bambusa tuldoides is a species of bamboo native to Asia that is is widely cultivated as ornamental and hedge plant but also for its culms. It has been introduced elsewhere in Asia outside of its native range, as well as in the Americas and Pacific region. Culms and branches root very readily and often grow to form monospecific stands along riverbanks, low hills, roadsides and disturbed sites. This species is adapted to grow in a wide range of climates and can survive temperatures as low as -7°C. Currently, B. tuldoides is considered an invasive and transformer species in Cuba. It is also included in the Global Compendium of weeds as an "agricultural weed".
Temperature-dependent near-surface interstitial segregation in niobium
Authors: Dalla Lana Semione Guilherme , Vonk Vedran , Pandey Arti Dangwal , Grånäs Elin , Arndt Björn , Wenskat Marc , Hillert Wolfgang , Noei Heshmat , Stierle Andreas 
Published: April 2021

Abstract
Niobium’s superconducting properties are affected by the presence and precipitation of impurities in the near-surface region. A systematic wide-temperature range x-ray diffraction study is presented addressing the effect of low temperatures (108 K–130 K) and annealing treatments (523 K in nitrogen atmosphere, 400 K in UHV) on the near-surface region of a hydrogen-loaded Nb(100) single-crystal. Under these conditions, the response of the natural surface oxides (Nb2O5, NbO2, and NbO) and the changes in the subsurface concentration of interstitial species in Nb are explored, thereby including the cryogenic temperature regime relevant for device operation. The formation and suppression of niobium hydrides in such conditions are also investigated. These treatments are shown to result in: (i) an increase in the concentration of interstitial species (oxygen and nitrogen) occupying the octahedral sites of the Nb bcc lattice at room temperature, both in the near-surface region and in the bulk. (ii) A decrease in the concentration of interstitials within the first 10 nm from the surface at 130 K. (iii) Hydride formation suppression at temperatures as low as 130 K. These results show that mild annealing in nitrogen atmosphere can suppress the formation of superconducting-detrimental niobium hydrides, while subsurface interstitial atoms tend to segregate towards the surface at 130 K, therefore altering the local concentration of impurities within the RF penetration depth of Nb. These processes are discussed in the context of the improvement of niobium superconducting radio-frequency cavities for next-generation particle accelerators.
Electronic and crystal structures of LnFeAsO1−x
H
x
(Ln = La, Sm) studied by x-ray absorption spectroscopy, x-ray emission spectroscopy, and x-ray diffraction (part I: carrier-doping dependence)
Authors: Yamamoto Yoshiya , Yamaoka Hitoshi , Uozumi Takayuki , Hariki Atsushi , Onari Seiichiro , Yamaura Jun-ichi , Ishii Kenji , Kawai Takuma , Yoshida Masahiro , Taguchi Munetaka , Kobayashi Kensuke , Lin Jung-Fu , Hiraoka Nozomu , Ishii Hirofumi , Tsuei Ku-Ding , Okanishi Hiroshi , Iimura Soshi , Matsuishi Satoru , Hosono Hideo , Mizuki Jun’ichiro 
Published: April 2021

Abstract
A carrier doping by a hydrogen substitution in LaFeAsO1−x
H
x
is known to cause two superconducting (SC) domes with the magnetic order at both end sides of the doping. In contrast, SmFeAsO1−x
H
x
has a similar phase diagram but shows single SC dome. Here, we investigated the electronic and crystal structures for iron oxynitride LnFeAsO1−x
H
x
(Ln = La, Sm) with the range of x = 0–0.5 by using x-ray absorption spectroscopy, x-ray emission spectroscopy, and x-ray diffraction. For both compounds, we observed that the pre-edge peaks of x-ray absorption spectra near the Fe-K edge were reduced in intensity on doping. The character arises from the weaker As–Fe hybridization with the longer As–Fe distance in the higher doped region. We can reproduce the spectra near the Fe-K edge according to the Anderson impurity model with realistic valence structures using the local-density approximation (LDA) plus dynamical mean-field theory (DMFT). For Ln = Sm, the integrated-absolute difference (IAD) analysis from x-ray Fe-Kβ emission spectra increases significantly. This is attributed to the enhancement of magnetic moment of Fe 3d electrons stemming from the localized picture in the higher doped region. A theoretical simulation implementing the self-consistent vertex-correction method reveals that the single dome superconducting phase for Ln = Sm arises from a better nesting condition in comparison with Ln = La.
Analysis of electron acoustic waves interaction in the presence of homogeneous unmagnetized collision-free plasma
Authors: Jhangeer Adil , Munawar Maham , Atangana Abdon , Bilal Riaz Muhammad 
Published: April 2021

Abstract
In this research, the transmission and interaction of nonlinear electron acoustic waves (EAWs) in such an unmagnetized, homogeneous, collision-free plasma composed of hot and cold electrons together with stationary ions throughout in the background have been analyzed. For the small-amplitude limit, the Korteweg–de Vries (KdV) equation for (EAWs) have been extracted. For electron acoustic solitary waves (EASWs), using the new extended direct algebraic approach, soliton solutions have also documented. The parametric analysis demonstrated that the hot to cold electron ratio and hot electron superthermal play a key role in changing the (EASWs) amplitude. The family of semi-bright solitons, dark singular solitons, Type 1 as well as 2 single solitons, trigonometric, intermingled hyperbolic and rational solitons was constructed and tested with the assistance of the innovative package software of numerical computations. The results show that the method is clear and efficient, produces analytical results in a generalized form, and these findings can also help resolve the difficulties and predicaments in the relevant disciplines of plasma physics and may be useful for studying the relationship between two (EASWs) in astrophysical and laboratory plasma. The solutions presented in this prototype are the latest in a literature review. For physical interpretation, some randomly selected solutions are shown graphically. Conclusions are held at the end.
Scintillation analysis of Weber beam in atmospheric turbulence
Authors: Bayraktar Mert 
Published: April 2021

Abstract
This paper presents scintillation performance of Weber beam propagating in atmospheric turbulence. Weber beam is defined in parabolic cylindrical coordinates and it will be troublesome to solve analytically. Because of that reason, source field expression is converted into Cartesian coordinates and numerical atmospheric model is used. Our results indicate that Weber beam brings the advantage because scintillation index is substantially less as compared to spherical wave and Gaussian beam. It is possible to mitigate scintillation if Weber beam involving more and small intensities is generated. We anticipate that communication system designers will use outputs of this study.
Energy corrections due to the noncommutative phase-space of the charged isotropic harmonic oscillator in a uniform magnetic field in 3D
Authors: Eser Muhittin Cenk , Riza Mustafa 
Published: April 2021

Abstract
In this study, we investigate the effects of noncommutative Quantum Mechanics in three dimensions on the energy-levels of a charged isotropic harmonic oscillator in the presence of a uniform magnetic field in the z-direction. The extension of this problem to three dimensions proves to be non-trivial. We obtain the first-order corrections to the energy-levels in closed form in the low energy limit of weak noncommutativity. The most important result we can note is that all energy corrections due to noncommutativity are negative and their magnitude increase with increasing Quantum numbers and magnetic field.
The future of high-energy astrophysical neutrino flavor measurements
Authors: Song Ningqiang , Li Shirley Weishi , Argüelles Carlos A. , Bustamante Mauricio , Vincent Aaron C. 
Published: April 2021

Abstract
We critically examine the ability of future neutrino
telescopes, including Baikal-GVD, KM3NeT, P-ONE, TAMBO, and
IceCube-Gen2, to determine the flavor composition of high-energy
astrophysical neutrinos in light of data from next-generation of
neutrino oscillation experiments including JUNO, DUNE, and
Hyper-Kamiokande. By 2040, the region of allowed flavor composition
at Earth will shrink ten-fold, and the flavor composition at the
astrophysical sources of the neutrinos will be inferred to within
6%, enough to pinpoint the dominant neutrino production mechanism
and to identify possible sub-dominant mechanisms. These conclusions
hold even in the nonstandard scenario where neutrino mixing is
non-unitary, a scenario that will be probed in next-generation
experiments such as the IceCube-Upgrade. As an illustration, we show
that future experiments are sensitive to decay rates of the heavier
neutrinos to below 1.8 × 10-5 (m/eV) s-1 at
95% credibility by 2040.
Thermal Stresses in an Elastic Clamped Square: Exact Solution
Authors: Kerzhaev A P 
Published: April 2021

Abstract
This paper presents a method for determining thermal stresses in an elastic clamped square with a given temperature distribution (the plane problem). First, the solution to the temperature problem for an infinite plane is constructed. Then, the solution for a square is added to this solution, with the help of which the boundary conditions on its sides are satisfied. The thermal stresses have been obtained in the form of series in Papkovich–Fadle eigenfunctions, the coefficients of which are determined explicitly. The final formulas are simple and can easily be used in engineering.
Recommendation System Journalist For Getting Top News Based On Twitter Data
Authors: Girsang Abba Suganda , Isa Sani Muhamad , Harvy Ikrar 
Published: April 2021

Abstract
One application that can be utilized in finding the latest news is by utilizing the development of information and communication technology such as seeing the delivery of public information through social media such as twitter. This study implements the system which is able to get the trending or top news based on twitter data. This information will connect to the journalist via mobile application. It helps journalists to get the potential news to be reported in their media. The application will group each tweets into various themes based on the cosine similarity. The tweets which are more the certain threshold, can be indicated as the top news. The top news is then classified into one category news by using SVM algorithm. The training data becomes from the source data of one media news. The specific topic of this result will ease to order the journalist cover this top news. The system can be implemented well.
Quality Analysis the E-PASTI System to Determine the Condition of the System and Information Quality
Authors: Nugraha Bayu , Marleny Finki Dona , Sfenrianto Sfenrianto , Edwina Cinthya 
Published: April 2021

Abstract
The purpose of this study is to evaluate the quality of secretarial, financial and staffing information systems at the Directorate General of AHU, known as the E-PASTI system. There are two variables analysed, namely system quality and information quality. Data collection using questionnaires that distributed to 123 employees who used the E-PASTI system but returned 93 questionnaires. Data quality analyst uses descriptive quantitative method. The results of the study are several conditions related to the system and information quality of E-PASTI. The quality can be a reference for the AHU Directorate General to improve the quality of E-PASTI that suits the needs of employees.
Malware Detection: Issues and Challenges
Authors: Naseer Muchammad , Rusdi Jack Febrian , Shanono Nuruddeen Musa , Salam Sazilah , Muslim Zulkiflee Bin , Abu Nur Azman , Abadi Iwan 
Published: April 2021

Abstract
Malware is a severe threat that makes computer security more vulnerable. Many studies have been conducted to improve the capability of detection techniques. However, there is a lack of analysis of the current trend of IDS. This paper is about extracting and analyzing the latest detection techniques which had been conducted by various studies. This paper will also emphasize the current challenges of malware deployment from recent studies. Finally, the similarities and differences between the detection techniques will be exposed, and the issues and problems related to detection techniques will highlight as well. In the future, this paper outcome can be used to highlight the current topic addressed in malware research.
Interests Scale Based Online Application to Determining Major in University
Authors: Bil Haq Aniq Hudiyah , Kamaratih Dewi , Fahmi Gema Lara , Malada Eka , Kurniawan Yogiek Indra 
Published: April 2021

Abstract
Students who graduate from high school when entering college will definitely choose a course that suits their interests and expertise, but this sometimes makes many students confused. The choice of certain majors is often based on encouragement from parents, friends and the environment. Factors related to internal students regarding personality profiles and typologies of work are rarely a consideration for students in choosing majors in college. This is because identifying interests that are in accordance with personal circumstances requires psychological measuring devices or often referred to as psychological testing. The aims of this study to identify self interest student for majoring in programs study. The tool to identification is using online-based applications. Psychology that used paper and pencil is now using a computer application, so the results of this scale can be made recommendations for students who want to major in college. This compiled application is processed automatically so that it can give results quickly and accurately. The subjects in this study were 127 students who answered their questions in this application and assessed the appropriateness of this application in terms of convenience, the language used, whether there were terms understood and whether the results were as expected by students. 70,1% of students answered that this application was easy to understand and run. 96% of students answered this application using good language and 34% of students thought that there were some terms that were not understood and also 63% of students answered that the results of this application were in accordance with their personal circumstances. The implication of this research is the psychological testing can be used by computerize administration; instruction will be easier for the tester and the result from the testing faster. Hopefully this application can be used for the student in majoring a program study.
The Object Tracking System At The Service Delivery Center Of The Traveling Salesperson Problem Method
Authors: Hardi Richki , Suryana Nanna , Pee Naim Che , Pribadi Agung Sakti , Rusdi Jack Febrian , Junaidi Apri 
Published: April 2021

Abstract
Search object delivery is essential to investigate, especially for package delivery. The technology is beneficial to check whether the goods sent have arrived or not. Otherwise, it will be known where in real-time. This study aims to provide information to the shipping service, to choose the right and optimal shipping routes using the problem of the Travel Salesperson’s problem, because of that way. This method is rather difficult when viewed from a computational point of view, but TSP is made easy by trying all possible routes to get a solution or approaching the optimal path. The problem is how to determine the route according to the package that can get to the destination city in the shortest time possible by using that route, package which can reach a town or delivery center to each subsequent branch that matches the package to the postal receiving town with a minimum time limit. In other words, the shortest path and the path that the packet must pass from the sending post to the recipient must be determined.
Thermal analysis of HI-STORM 100S dry cask with the MELCOR code
Authors: Angelucci M , Herranz L E , Paci S 
Published: April 2021

Abstract
As spent nuclear fuel (SNF) pools are reaching their capacity, dry storage systems have been introduced worldwide as interim step before permanent deep underground disposal. Thermal behaviour of the SNF, and of the system containing it, has proven to be essential to ensure fuel rod integrity for the entire storage time. In the effort to achieve a proper characterization, this work investigates the capabilities of the lumped parameter MELCOR 2.2 code to model the thermal evolution of SNF in the scenario of a concrete-based dry cask. Being dry storage systems completely outside MELCOR domain of application, a number of approximations and hypotheses have been necessary, without however jeopardizing the real cask characteristics and behaviour. Results have been discussed to be coherent with what physically expected and verified against estimates previously obtained from a FLUENT calculation on the same system. The code shows the ability to well predict the Peak Cladding Temperature (PCT) and its location, as well as temperature radial profile; however, some discrepancies show up when analysing temperature profiles in the down-comer and in the air gap. For this reason, further assessment studies should be performed to confirm the potential shown in this preliminary work.
Experimental Assessment of Gas Static Meters Under Different Operating Conditions
Authors: Cascetta Furio , Bondesan Marcello , Musto Marilena , Rotondo Giuseppe 
Published: April 2021

Abstract
This paper compares the metrological performance of a sample of commercial domestic/residential smart meters for natural gas (G4). In particular, the performance degradation of electronic static and dynamic gas meters has been evaluated. The sample was composed by ultrasonic gas meters, thermal mass meters and diaphragm gas meters. The tests, performed on the gas meters, reproduce the most severe operating conditions (i.e. filed test) such as the influence of the gas composition, the temperature difference between gas and meter, the gas humidity and the presence of dust in the gas. Furthermore, the meters have been undergo to some endurance tests such as start and stop and to the high flowrate runs.
Experimental heat transfer evaluation in a porous media
Authors: Pedrazzi S , Allesina G , Puglia M , Morselli N , Ottani F , Parenti M , Tartarini P 
Published: April 2021

Abstract
The evaluation of the heat transfer coefficient between hot gases and biomass particles is not easy to estimate because of the concomitance of exothermic and endothermic reactions. However, a proper evaluation of this coefficient is fundamental to design pyrolysis apparatus. This paper presents an experimental study regarding wood pellets heating up in a batch reactor using hot exhaust gases from an engine. Temperature and flow of hot gases entering the reactor were measured over time. A first test was carried out using hemp hurd pellets with 15% of sawdust, and a second one using the carbonized pellets obtained from the previous test. Fresh pellets have a higher thermal capacity compared to carbonized pellets that is almost inert and follow a more regular heating trend. Heat transfer was calculated considering the energy released by the exhaust passing through the biomass as the sum of the energy absorbed by the pellets and the thermal losses. Convection is the predominant heat transfer mechanism and the convective heat transfer coefficient was evaluated. Finally, the energy for the pyrolysis of 1 kg of fuel was evaluated. About 0.7 kWh/kg are necessary to pyrolyze this kind of pellets while an heat transfer coefficient of 110 W/(m2K) was estimated for the inert packed bed.
Optimal sizing of an integrated energy system for a nearly zero-energy residential building
Authors: Franco Alessandro , Bartoli Carlo , Conti Paolo , Testi Daniele 
Published: April 2021

Abstract
The paper analyzes the design of a typical solution for a smart energy system. It examines a particular plant, evaluating the integration of a Photovoltaic (PV) system and a Ground-Source Heat Pump (GSHP) for residential building service. The idea is to develop a system that maximizes self-consumption of the renewable energy generated by a small-sized solar array installed on the building. The case is analyzed starting from the results of a long-term experimental analysis of a real plant in Pisa. The analysis concerns the energy balance of the system during a year with a special attention on the operation of the two different systems, PV array and GSHP. Some indications on the possible optimum design of this solution are proposed and discussed and analyzed.
Thermal characterization of a multilayer coating for seismic and energy building renovation
Authors: Pilotelli Mariagrazia , Levi Elisa , Neri Manuela 
Published: April 2021

Abstract
Many buildings built in Italy in the 60s and 70s need an energy requalification and at the same time an improvement of the seismic behaviour. A non-invasive method for a joint requalification consists of an anti-seismic plaster layer and a thermal coating. In this work, a multi-layer package of 3 cm of SFRM coating and 8 cm of wood fiber placed on a 20 cm masonry wall is analyzed. Numerical and experimental analysis allowed to characterize the wall, and to determine the influence of the connecting elements.