bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fatigue life analysis and damage evaluation in glass fiber reinforced composite materials based on recycled polyethylene terephthalate
Authors: Singh Ashwani Kumar , Bedi Raman 
Published: January 2023

AbstractViability of recycling polyethylene terephthalate (PET) can be enhanced by increasing its usage as a matrix material in manufacturing of composite materials. Structural applications of composite materials almost always involve fatigue loading and evaluation of fatigue behaviour is essential to explore the full potential of composite materials based on recycled PET. With an aim to increase the acceptability of recycled PET based resins, fatigue performance of glass fiber reinforced composite materials based on unsaturated polyester resin derived from recycled PET (rPET-UPR) has been evaluated in the present research. Glass fiber composites laminates of stacking sequence [0/(±45)2/0]Thave been fabricated using vacuum infusion process. Fatigue tests were performed at the stress ratio of 0.1, where the stress level varied from 40%–80% of the ultimate tensile strength (UTS). The results of fatigue tests show that the fatigue lives of composites based on rPET-UPR were lower as compared to virgin polyester matrix composites. However, Statistical analysis of the fatigue life data using two parameter Weibull distribution, established that there is no deleterious effect on the scatter observed in fatigue lives of these composites, as compared to composites based on virgin polyester resin. Due to higher degradation of rPET-UPR matrix as well as weak interfacial properties, 13% higher self generated temperature was observed during fatigue loading in comparison to virgin resin based composite materials. A three phase stiffness degradation curve has been observed for these composite materials indicating stiffness loss in the range of 20%–35% till the time of failure, which correlates well with the experimental damage observations. A nonuniform and rapid damage growth was observed at high-stress levels, whereas a more uniform damage zone was observed at the low-stress levels.
Neutrino propagation in the Earth and emerging charged leptons with nuPyProp
Authors: Garg Diksha , Patel Sameer , Reno Mary Hall , Reustle Alexander , Akaike Yosui , Anchordoqui Luis A. , Bergman Douglas R. , Buckland Isaac , Cummings Austin L. , Eser Johannes , Garcia Fred , Guépin Claire , Heibges Tobias , Ludwig Andrew , Krizmanic John F. , Mackovjak Simon , Mayotte Eric , Mayotte Sonja , Olinto Angela V. , Paul Thomas C. , Romero-Wolf Andrés , Sarazin Frédéric , Venters Tonia M. , Wiencke Lawrence , Wissel Stephanie 
Published: January 2023

Abstract
Ultra-high-energy neutrinos serve as messengers of some of the highest energy astrophysical environments. Given that neutrinos are neutral and only interact via weak interactions, neutrinos can emerge from sources, traverse astronomical distances, and point back to their origins. Their weak interactions require large target volumes for neutrino detection. Using the Earth as a neutrino converter, terrestrial, sub-orbital, and satellite-based instruments are able to detect signals of neutrino-induced extensive air showers. In this paper, we describe the software code nuPyProp that simulates tau neutrino and muon neutrino interactions in the Earth and predicts the spectrum of the τ-leptons and muons that emerge. The nuPyProp outputs are lookup tables of charged lepton exit probabilities and energies that can be used directly or as inputs to the nuSpaceSim code designed to simulate optical and radio signals from extensive air showers induced by the emerging charged leptons. We describe the inputs to the code, demonstrate its flexibility and show selected results for τ-lepton and muon exit probabilities and energy distributions. The nuPyProp code is open source, available on github.
Influences of plasma density perturbations on ion cyclotron resonance heating
Authors: Zhang J.H. , Zhang W. , Zhang X.J. , Qin C.M. , Yang Y.Q. , Shi L. 
Published: January 2023

Abstract
The scattering of waves in the ion cyclotron range by plasma density perturbations in the edge has been previously studied by Zhang et al with the help of antenna code RAPLICASOL (2020, Nucl. Fusion, 60, 096001). The further interesting question is whether the density perturbations have an effect on ion cyclotron resonance heating (ICRH) in the core. In this paper, finite element method based 2D full wave code integrating the core with the edge is used to study this issue. The analytical density perturbations are applied to study the influence of density perturbations on field distribution, power deposition, wave coupling, power partition among different species in the core, and the fraction of energy dissipation in the scrape-off layer. The influence of density perturbations becomes global and significant when the poloidal size of the density blob is comparable to the perpendicular wavelength. In addition, the strength of wave scattering is directly proportional to the amplitude and the radial size of the density blob. Finally, a typical experiment on the EAST is chosen and the influence of realistic density perturbations on ICRH is evaluated.
Shape and interfacial structure of droplets. Exact results and simulations
Authors: Squarcini Alessio , Tinti Antonio 
Published: January 2023

AbstractWe consider the fluctuating interface of a droplet pinned on a flat wall. For such a system we compare results obtained within the exact field theory of phase separation in two dimensions and Monte Carlo (MC) simulations for the Ising model. The interface separating coexisting phases splits and hosts drops whose effect is to produce subleading corrections to the order parameter profile and correlation functions. In this paper we establish the first direct measurement of interface structure effects by means of high-performance MC simulations which successfully confirm the field-theoretical results. Simulations are found to corroborate the theoretical predictions for interface structure effects whose analytical expression has recently been obtained. It is thanks to these higher-order corrections that we are able to correctly resettle a longstanding discrepancy between simulations and theory for the order parameter profile. In addition, our results clearly establish the long-ranged decay of interfacial correlations in the direction parallel to the interface and their spatial confinement within the interfacial region also in the presence of a wall from which the interface is entropically repelled.
Securing text using Rabin-p public key cryptosystem and Spritz algorithm in a hybrid cryptosystem: a tutorial
Authors: Budiman M A , Irvida T A 
Published: January 2023

Abstract
Security in the process of sending digital messages is very important to avoid being theft by unwanted parties. In order to protect the messages, modern cryptography techniques come into play. Public key cryptosystem based on the integer factorization such as Rabin-p could provide high confidentiality as long as the modulus is of a very large integer. On the contrary, having a longer modulus causes two problems: the longer the size of the ciphertext and the longer the time needed for the decryption process. In order to solve this problem, in this research, we combine Rabin-p cryptosystem and Spritz algorithm in a hybrid cryptosystem. Message is encrypted with Spritz algorithm, and the key of Spritz algorithm is then protected by Rabin-p cryptosystem. In this scheme, the encrypted message can be recovered back to the original message while maintaining small decryption time.
Effect of Nickel on the Hydroxide Ion Adsorption of Copper Sulfide: A viewpoint from a first-principle calculation
Authors: Irham M A , Muttaqien F , Bisri S Z , Iskandar F 
Published: January 2023

Abstract
Supercapacitor gains so much interest in recent years due to its capabilities to provide high power densities with high energy density possibilities. Several transition metal sulfides (TMS) give the best capacitance results nowadays, with Copper Sulfides (CuS) promising candidates on supercapacitor electrodes materials. Several approaches have been made to increase TMS-based supercapacitor performance, such as doping, surface functionalization, and nanostructuring. Even though several dopants already reported, other dopants have not yet explored. In this study, we study the nickel effect as dopant on the binding energy of electrolyte in the surface of CuS from first-principles viewpoints. In this study, we limit our investigation of surface interaction with electrolyte only for OH− ions. We prove that the binding energy of electrolyte is increased after introducing dopant in the surface of CuS, which could explain of dopant effect and background proof of future research in this field.
Bamboo marketing management (case study around PT Toba Pulp Lestari concesion)
Authors: Azhar I , Risnasari I , Hemmy A V 
Published: January 2023

Abstract
Bamboo belongs to the gramineae family (grasses), also called Giant Grass, clumps and consists of a number of stems (reeds) that grow gradually, from bamboo shoots to young stems and mature at the age of 4-5 years. And bamboo can be made into many products The purpose of this research is to analyze the marketing strategies of the community around the area of PT. Toba Pulp Lestari. The research method used in this study is descriptive qualitative because it aims to describe the situation on the ground. The results showed that from the analysis of the IFAS, EFAS, and Matrix SWOT shows that bamboo business has opportunities that can be utilized by the community. The strategy (W-O) that must be applied to the research location is to form farmer groups and cooperatives at the village level, provide market information to farmers, improve access/roads to and from villages and improve human resources.
MPU-6050 Wheeled Robot Controlled Hand Gesture Using L298N Driver Based on Arduino
Authors: Azhari  , Nasution T I , Azis P F A 
Published: January 2023

Abstract
Robots are intelligent machines that are controlled by computer applications to perform various operations and services to complete high-risk jobs such as fire, poison, sharp objects, viruses, etc. MPU-6050 Serves as a movement medium in robot electronic systems where the robot moves. Arduino nano functions as a controller on a system robot that includes the MPU-6050, Motor Driver L298N, and NRF24L01. NRF24L01 Serves as a communication medium that is connected between the robot movement system and the hand gesture movement system. The L298N Motor Driver moves according to the signal sent by the MPU-6050 sensor. The L298N Motor Driver functions as an output medium that is made to the DC motor. The L298N Motor Driver will instruct the DC motor to move according to the signal sent by the MPU-6050 module. From the data obtained, the MPU-6050 works at a Y angle with an analog signal of 27.42 ° while driving. The MPU-6050 has X and Y axes with error values at X of 0.32% and Y of 0.48%. NRF24L01 functions as a command to send and receive data signals that work with a maximum range of 30 meters with a speed of 0.457 m/s.
Design and regression analysis of solar tracker through system sun tracker
Authors: Hakim Lukman , Ikhsan Nasution Tulus , Geanita Esi 
Published: January 2023

Abstract
Designing and regression analysis of test result solar tracker has been done. The instrument use Arduino Uno as mikrokontroller, sensor LDR, motor servo, panel surya and LCD as viewer of result test. From result test about arduino uno that show output 1,0,1,0,1 since 5 secon. Testing panel surya show average voltage about 5.84 volt since 5 secon. Testing LCD show 0 for bright condition and 1 for dark condition. Testing motor servo show variation value in 5 steps. Regression Analysis from testing instrument are compare value of voltage from the standart measurer with instrument that design. The source energy that use to instrument is light sun. the data show the value of standar deviasi are (δ) 0,075, so

(

U

A
1

)

=

δ

n

=

0
,
075

20

=
0
,
017

. The equation of regression is (Yreg
) yaitu Yreg
) = a + bx = 0.0096 − 0.0035x. so the value of uncertainty approaching regreesion are UA2 0.013. with value of uncertainty approaching regreesion show the instrument of solar tracker is good work
Study vehicle routing problem using Nearest Neighbor Algorithm
Authors: Ferdiani Harahap Rio , Sawaluddin  
Published: January 2023

Abstract
Vehicle routing problem (VRP) has a key role in logistics management. VRP plays a role in designing the optimal route used by a number of vehicles placed at the depot to serve a number of customers with known requests. To solve the VRP, the nearest neighbor algorithm used to get the most optimal results. The Nearest Neighbor algorithm is a heuristic method which is done by starting the starting point than looking for the nearest point. In this paper, algorithm nearest neighbour can save the distance of 13,14% and cost 13,17%.
Combining Beaufort cipher and RSA-CRT algorithm in a hybrid scheme to secure images
Authors: Rachmawati D , Lubis A N 
Published: January 2023

Abstract
RSA algorithm is one type of algorithms in public-key cryptographic systems where the private keys are kept secret and the public keys can be disseminated. Beaufort Cipher algorithm is a type of classical symmetric algorithm. Meanwhile, the RSA-CRT is one variant of RSA cryptosystem. The RSA-CRT is not efficient for encrypting large files such as image files, since it uses modular exponentiation, which is slow, and the resulting ciphertext would be very much larger than the message. To avoid this problem, a hybrid cryptosystem scheme using RSA-CRT and Beaufort algorithm is designed to encrypt images. Beaufort Cipher algorithm is used for encryption and decryption of digital images, while RSA-CRT algorithm for decryption and decryption of beaufort cipher keys. The results showed that the size of the image (*.BMP) files and the encrypted image files are the same.
Hutchinson model of Holling type II with delay in prey
Authors: Angela Sitinjak Anna , Mawengkang Herman , Ramli Marwan , Tampubolon Rinaldo 
Published: January 2023

Abstract
The problems in daily life can be solved with mathematical models, such as the model of Lotka-Volterra to find out how growth of animals. This model can be modified into the Predator-Prey Model of Hutchinson with delay time and Response Function of Holling type II in which one as active predator and the other as prey, delay time is considered on prey population with assuming that supporting resources of prey are adequate and this type of response function is as interactions between populations of predator and prey. In this paper, linearization and eigenvalues are used to analyze the stability solution of the fixed point so that it can be known the effect of delay time and response function of this type. There are three fixed points are obtained without delay time with two fixed points are stable under certain conditions, but delay time can change the stability of the fixed point.
The sum of hamming distance for some composite graphs relative to vertex-edge incidence matrix
Authors: Ali Safri , Suwilo Saib , Mardiningsih  
Published: January 2023

Abstract
Given C be a vertex-edge incidence matrix of a graph Z. The Hamming distance between two rows C(x, :) and C(y, :) of C is the number of coloumn ℓ such that C (x, ℓ) ≠ C (y, ℓ). In this paper, we discuss the sum of Hamming distances between all pairs of rows of C. We present a formula for the sum of the number of edges and the number of vertices of the graph Z. We then use this formula to determine the sum of Hamming distance for composite graphs such as union of graphs, joint of graphs, corona product of graphs and cartesian product of graphs
Size reduction of the square microstrip patch antenna with Koch fractal for 1.575 GHz applications
Authors: Rambe A H , Angriani T , Fahmi F , Alim S 
Published: January 2023

Abstract
This paper discusses a square patch microstrip antenna with a resonant frequency of 1.575 GHz. The initial design of the antenna was carried out using a theoretical approach and then applied fractal Koch with 1-iteration and 2-iteration. The design optimization is done using the AWR simulator. Based on the optimal design results, the use of Koch fractals has been able to reduce the antenna size. In the first iteration, the antenna size can be reduced by 28% with a minimum return loss value of -33.36 dB at a frequency of 1.575 GHz. In the second iteration, the antenna size can be reduced by 42.4% from the design without fractals with a minimum return loss of -37.18 dB at a frequency of 1.575 GHz. The gain of each antenna design has almost the same value, namely 5.115 dB.
Compressive Strength Study based on Fly Ash Geopolymer Concrete at the age of 28 days under very High Temperature
Authors: Farida F M , Hardjasaputra H , Sofwan A , Surahman A 
Published: January 2023

Abstract
Due to creeping process at the burning material, material’s elastic modulus and yield strength will decrease.Three fire protection system are exist in handling the fire problem: active fire protection, passive fire protection, and safety management. In correlation with material problem due to fire, passive fire protection is a strategy to counter it. This paper presents the results of fire protection by using Suralaya fly ash geopolymer concrete. Three molaritas of geopolymer concrete mixture design are 2M, 4M, and 6 M. Sodium Silicate (Na2SiO3) and Sodium Hydroxide (NaOH) are used as alkaline activator. The results of the experiment were analysed by compressive strength for the optimum values. This study found that the value of compressive strength of steam curing is higher than that of water curing, the value of geopolymer concrete compressive strength of 2M is higher than that of 4M, and the value of geopolymer concrete compressive strength of 6M is higher than that of 4M.
Effect of buffers and pH in antenna sensitized Eu(III) luminescence
Authors: Nielsen Lea Gundorff , Sørensen Thomas Just 
Published: January 2023

Abstract
The photophysics of a europium(III) complex of 1,4,7,10-tetraazacycododecane-1,4,7-triacetic acid-10-(2-methylene)-1-azathioxanthone was investigated in three buffer systems and at three pH values. The buffers—phosphate buffered saline (PBS), 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES), and universal buffer (UB)—had no effect on the europium luminescence, but a lower overall emission intensity was determined in HEPES. It was found that this was due to quenching of the 1-azathioxanthone first excited singlet state by HEPES. The effect of pH on the photophysics of the complex was found to be minimal, and protonation of the pyridine nitrogen was found to be irrelevant. Even so, pH was shown to change the intensity ratio between 1-azathioxanthone fluorescence and europium luminescence. It was concluded that the full photophysics of a potential molecular probe should be investigated to achieve the best possible results in any application.
Thermal and mechanical characterization of polypropylene/basalt fiber/ethylene propylene diene monomer rubber hybrid composite
Authors: Poornima C , Mallik U S , Suresh R 
Published: January 2023

Abstract
The current study aims in enhancing the impact properties of polypropylene/basalt fiber composite reinforced with different wt% of ethylene propylene diene monomer (EPDM) elastomer to identify the optimum wt% of EPDM at which a balance in strength and toughness can be obtained. According to a dynamic mechanical study, the composite’s viscoelastic behaviour and damping properties improved as the EPDM weight percentage increased in comparison to virgin polypropylene. Scanning and transmission electron microscopy were utilized to see the composite’s fragmented surface. Finally, it was concluded that the presence of a renewable basalt fiber helped in obtaining stability between the strength and toughness of polypropylene-toughened composites. Finally for up to 20 wt% EPDM there was a balance in the composite stiffness and strength.
Hannah Arendt: A Very Short Introduction
Authors: Villa Dana 
Published: January 2023

Abstract
The book provides an overview of Hannah Arendt’s (1906‒75) contributions to political thought and philosophy, along with a sketch of her dramatic life story. A German-Jewish refugee from Hitler’s Germany, Arendt escaped to America and became one of its most respected political thinkers and public intellectuals. The book provides summary and discussion of Arendt’s primary works, including The Origins of Totalitarianism, Eichmann in Jerusalem, The Human Condition, On Revolution, and the posthumously published The Life of the Mind. It also examines criticisms of her work, and dispels some common but surprisingly widespread misinterpretations.
Judging, thinking, and willing
Authors: Villa Dana 
Published: January 2023

Abstract
This chapter examines Arendt’s theory of political and moral judgment, which is the “other side” of her theory of political action. It describes how her interest in the nature of judgment was piqued by the trial of Adolf Eichmann in Jerusalem. Eichmann’s thoughtlessness and his failure to judge spurred Arendt to investigate this all-important faculty, and to suggest that the activity of thinking as such helps condition us against evil-doing. The chapter also describes how Arendt’s interest in the mental activity of thinking or reflection led her to juxtapose it to willing, our faculty for the future and for spontaneous beginning.
308 Tralokinumab provides other clinically meaningful improvements in adolescents with moderate-to-severe atopic dermatitis who did not achieve IGA 0/1 at week 16
Authors: Paller Amy , Blauvelt Andrew , Soong Weily , Hong Chih-ho , Schuttelaar Marie L A , Schneider Shannon  , Moerch Marie Holst , Simpson Eric  
Published: January 2023

Abstract
In the monotherapy phase 3 trial (ECZTRA 6, NCT03526861) in adolescents with moderate-to-severe atopic dermatitis (AD) treated with tralokinumab, IGA of clear/almost clear skin (IGA 0/1) at week 16 was a primary endpoint. IGA 0/1 can be a high standard to achieve for patients with moderate-to-severe AD and may not fully reflect achievement of other clinically meaningful parameters, such as improvement in signs, symptoms and/or quality-of-life (QoL). To assess the impact of tralokinumab (150 or 300 mg) vs. placebo on other clinically meaningful parameters at week 16 in the subset of patients who did not achieve IGA 0/1 at week 16 and/or used rescue medication. Adolescents (12–17 years) were randomized to subcutaneous tralokinumab 150 or 300 mg, or placebo, every 2 weeks. Patients who did not achieve IGA 0/1 at week 16 and/or utilized rescue therapy were included in this post-hoc analysis. Non-responder imputation was used for patients who utilized rescue therapy or had missing data. Clinically meaningful responses were defined as EASI-50, ≥ 3-point improvement in pruritus NRS, or ≥6-point improvement in CDLQI. At week 16, 78.6% and 82.5% of tralokinumab-treated patients (150 mg/300 mg) vs. 95.7% (placebo) exhibited IGA &gt; 1 and/or used rescue therapy. 36.4% (150 mg) and 52.5% (300 mg) of patients with IGA &gt; 1 in the tralokinumab arms, compared to 21.1% (placebo), achieved clinically meaningful responses in at least one measure: EASI-50, pruritus NRS, or CDLQI. Greater proportions of tralokinumab-treated patients (150/300 mg vs. placebo) achieved EASI-50 (31.2%/41.3% vs. 10.0%) and ≥3-point improvement in pruritus NRS (21.6%/22.8% vs. 8.0%). A greater proportion of tralokinumab 300 mg patients vs. placebo (35.2% vs. 15.0%) achieved ≥6-point improvement in CDLQI. Many tralokinumab-treated adolescents who did not achieve IGA 0/1 at week 16 and/or used rescue therapy still achieved clinically meaningful improvements in AD signs, symptoms, and/or QoL.