bluuebunny/crossref_metadata_2025_split huggingface dataset:
On The Total Edge Irregularity Strength of Some Copies of Books Graphs
Authors: Ramdani Rismawati , Salman A.N.M. , Assiyatun Hilda 
Published: October 2019

Abstract
Let G = (V(G),E(G)) be a graph and k be a positive integer. A total k-labeling of G is a map f : V(G) ∪ E(G) → {1,2, …, k}. The edge weight uv under the labeling f is denoted by Wf
(uv) and defined by wf
(uv) = f(u) + f(uv) + f(v). A total k -labeling of G is called edge irregular if there are no two edges with the same weight. The total edge irregularity strength of G, denoted by tes (G), is the minimum k such that G has an edge irregular total k-labeling. The labeling was introduced by Bača, Jendroľ, Miller, and Ryan in 2007. In this paper, we determine the total edge irregularity strength of some copies of book graphs.
A numerical study of tidal bores
Authors: Ningsih N S , Siddiq N L , Tarya A 
Published: October 2019

Abstract
A tidal bore is a natural phenomenon forming a positive surge upstream and it has a remarkable effect on estuary zones and river ecologies. The tidal bore formation controlled by channel properties, tidal characteristics, and river discharge remains a research challenge. In this study, a tidal bore formation and its hydrodynamics characteristics have been numerically investigated by using a two-dimensional version of OpenFOAM (Open Source Field Operation and Manipulation) model to obtain a better understanding of the effects of flow velocity before arrival of the bore (V
1), initial water depth (d
1), and Froude number (Fr) on the propagation of the tidal bore. The numerical simulation results have confirmed earlier findings obtained under both field and laboratory data in which types of the tidal bores depend on the Froude number. An undular tidal bore occurs when 1 ≤ Fr < 1.25, while partially breaking undular bore appears for 1.25 ≤ Fr < 1.5 – 1.6. Further simulation results have revealed that the flow velocity before the bore passage (downstream flow or V
1) is more dominant than the initial water depth in affecting the Froude number. Meanwhile, the bore celerity (U

b
) is more affected by the initial water depth compared to the flow velocity before the bore arrival. It is found that the Froude number does not directly affect wave parameters of the bore, such as amplitude, length, period, and steepness of the wave. However, the wave length and period are directly proportional to the initial water depth, whereas the wave amplitude and steepness are associated with the velocity prior to the bore passage.
Seiches in a Closed Basin of Various Geometric Shape
Authors: Rif’atin H Q , Magdalena I 
Published: October 2019

Abstract
In this paper, we will observe wave’s profile when the resonance occur in a closed basin of various geometric shape, which are rectangular, triangular, and semi-parabolic. The governing equation is shallow water equation. We solve the governing equation analytically to obtain the value of natural resonant period of the basin, which causes resonance phenomena. The analytical results were compared to the experimental results to see how good our model is. The equation will also be solved numerically using finite volume on a staggered grid method. Then, the numerical scheme will be validated against the analytical solutions we derived before.
Infinitely many Equilibria and Some Codimension One Bifurcations in a Subsystem of a Two-Preys One-Predator Dynamical System
Authors: Marwan M , Tuwankotta J M 
Published: October 2019

Abstract
In this paper we study a two dimensional dynamical system depending on four parameters. This is a subsystem of a three dimensional system of two-preys one-predator system. Our focus is in the dynamics of the system and bifurcations with respect to the variation on the mortality rate of the predator. Interesting co-dimension one bifurcation such as transcritical and Hopf bifurcation have been observed. Furthermore, the system exhibit the existence of infinitely many equilibria as the bifurcation parameter become zero.
Photocurrent enhancement by incorporation of air-stable Cs2SnI6 Perovskite in dye-sensitized solar cell
Authors: Pujiarti H , Wulandari P , Hidayat R 
Published: October 2019

Abstract
Cs2SnI6 is an inorganic lead-free perovskite variant which is air and thermal stable and its application in the third generation of photovoltaic devices is undergoing rapid expansion over the past few years. This paper presents a fabrication of dye-sensitized solar cell (DSSC) with the incorporation of Cs2SnI6 perovskite in the active layer of N-719 dye. The absorbance spectra of N-719 dye on TiO2 mesoporous layer is found to increase by the addition of 2 wt% and 3 wt% of Cs2SnI6 in N719 dye in comparison to the reference of N-719 dye leading the role of Cs2SnI6 as photon absorber in the devices. Our fabricated DSSC device reveals a photocurrent enhancement from 6.36 mA/cm2 to 12.87 mA/cm2 by the addition of 3 wt% of Cs2SnI6, along with the enhancement of power conversion efficiency from 1.71% to 3.94%.
K+Λ and K+Σ0 Photoproduction in View of the New CLAS Data
Authors: Mart T 
Published: October 2019

Abstract
We have investigated the effect of the new CLAS data consisting of the recoiled Λ polarization P, photon asymmetry Σ, target asymmetry T, and the double polarizations Ox
and Oz
, on the latest isobar models constructed for the kaon photoproduction processes γp → K
+Λ and γp → K
+Σ0. We found that those data might have significant effect, especially in the K
+Λ channel, where apparent changes are observed in the predicted differential cross sections after including the new CLAS data in the fitting database. The isobar model for the K
+Λ photoproduction must be accordingly modified in order to improve the agreement between model calculation and previous experimental data.
Designing A Low-Cost Surface Plasmon Resonance (SPR) Instrument For Monitoring Degradation Of Milk Quality
Authors: Purwalaksana A Z , Suendo V , Yuliarto B , Hendro  
Published: October 2019

Abstract
A design of a low-cost SPR instrument has been made to monitor the degradation of milk quality. The cost-production of the SPR instruments is much more economical, namely around IDR 10,000,000 where the price of commercial SPR instruments such as nanoSPR6 is $ 9,950. The main components of the instrument are consist of an Arduino Uno microcontroller, red laser, polarizer, stepper motor, prism, gold chip, and a cell phone camera. The light detection system of the instruments is using image processing that utilizes recorded data from the cell phone camera programmed with python software. The sample in this research used is pasteurized milk. The measurement results obtained from the SPR instruments are compared with nanoSPR6. The sensorgram result from the monitoring of pasteurized milk using both SPR instruments for 12 hours and nanoSPR6 for 4 hours has experienced a decrease in light intensity. The light intensity had decreased up to 8 hours from the time of observation and remained flat for the next 4 hours. This decreased intensity states that there is a shift in the angle dip during the monitoring process. This explanation is supported by track mode measurement data by nanoSPR6 that run for 2 hours, showing a change in the angle dip from 67.34° to 67.6°. The increase in angle dip during the monitoring process is because of increasement in the dielectric constant and the density of the milk during the process of quality degradation. In addition, it is also suspected to be due to the appearance of fatty deposits in milk which results in an increase in the milk refractive index. The change of the milk refractive index within 2 hours is 0.0023 obtained by a fitting process using the Winspall software.
Ernst Potential of Near-Horizon Extremal Kerr Black Holes
Authors: Sakti M F A R , Irawan A , Suroso A , Zen F P 
Published: October 2019

Abstract
One way to find the solution of black holes is through the Ernst equations that is quite simple instead of solving the Einstein equation. Solution of Ernst equations for Kerr and Kerr-Newman black holes have been achieved in the last century. The magnetized case for those black holes and their Ernst potentials can be found using Harrison transformation. Herein the Ernst potential for extremal rotating Kerr and its magnetized solution is shown. In the end, we also extend this fashion for extremal Kerr-Newman black hole.
Global Existence of Maxwell Klein Gordon Theory with General Couplings
Authors: Mulyanto  , Akbar F T , Gunara B E 
Published: October 2019

Abstract
In this paper, we prove the global existence of Maxwell Klein Gordon equation (MKG) with the addition of general couplings in 4-dimensional Minkowski space. It is well known that the MKG system is globally well-posed in consideration of the Coulomb gauge condition for finite energy, while here we use the temporal gauge condition to prove its existence. The result shows that the solution does not blow up in finite time. For complete proof of global existence, we show that (H
2 × H
1) norm in the form of “modification of energy” is not also blow up in finite time.
Covariant Isobar Model for K+Λ Electroproduction
Authors: Sakinah S , Mart T 
Published: October 2019

Abstract
Kaon electroproduction process e + p → e′ + K
+ Λ has been investigated by using a covariant isobar model constructed from the appropriate Feynman diagrams. The corresponding propagators and vertex factors are obtained from our previous analysis. For the electromagnetic form factor we adopt the standard dipole one with the cuttoff considered as a free parameter. We include nucleon resonances with spins up to 9/2. All nucleon resonances listed in the particle listings of the Particle Data Group are considered in this investigation. The unknown parameters, including the electromagnetic and hadronic coupling constants,are extracted by fitting the predicted observables to the currently available experimental data.
The Influence of Light Wavelengths Toward the Growth of Brassica rapa L.
Authors: Maiza Rizky , Kurnia Daniel 
Published: October 2019

Abstract
This research aims to analyze the influence of wavelength from light source on growth of Brassica rapa L (pak choi). The lamps used in the research were 11-watt UV light, 8-watt white LED light, red LED light, green and blue 3-watt LED lights, and 150-watt infrared light, placed in boxes except infrared one. The irradiation was done in the growth box made from cardboard with size of 23 cm × 27 cm × 40 cm for 9 hours every day. The measurement done was a biometric measurement by measuring stem height, leaves width and their numbers. The observations were done for 14 days starting from the first day of planting. From the measurement result, the pak choi can grow well on white LED light. While in other light sources, it cannot grow well due the lack in wavelength needed by the plant. The experiment was further carried out by combining white LED light with blue, red and UV. The growth box was made larger with a size of 40 cm × 27 cm × 46 cm. The experimental result showed that all pak choi plants can grow well. Light using a combination of lights was useful in the development and the growth of pak choi. From the three treatments, pak choi with white LED light and UV showed faster growth for width, length and number of leaves.
The Parameterized Post-Friedmannian Framework for Nonminimal Derivative Coupling with General Cosmological Perturbation Metric
Authors: Widiyani Agustina , Marliana  , Suroso Agus , Zen Freddy P 
Published: October 2019

Abstract
We study the parameterization of cosmological model where derivative of an additional scalar field coupled to curvature tensor. We extend the Parameterized Post-Friedmannian framework for interacting dark energy theories to the model. Starting from general cosmological perturbation metric, we derive perturbed energy-momentum tensor for scalar field and parameterized the tensor. Based on the value of the parameters, we compare the model with relevant models in current literature. As the results, we find that parameterization for type 1 theories of dark energy which is explicitly coupled to dark matter, gives only 4 non-zero Parameterized Post-Friedmannian coefficients.
Tumor Control Probability (TCP) and Normal Tissue Complication Probability (NTCP) with Consideration of Cell Biological Effect
Authors: Nuraini Rany , Widita Rena 
Published: October 2019

Abstract
In radiotherapy, Tumor Control Probability (TCP) is a parameter used to calculate the percentage of tumor killing, while its effect on normal tissue damage describe by Normal Tissue Complication Probability (NTCP). Both TCP and NTCP depend on fractionation and cell biological effects such as repopulation, repair, redistribution and re-oxygenation. It also depends on the statistical distribution model used. One model that can review the biological effects of cells is the Poisson model. In this research, we modified the Poisson model by considering the four biological effects mentioned above on TCP and only the effect of repair on NTCP. The objective of this research is to investigate the most dominant effect that influences TCP value and the effect of repair on NTCP. The results show that the effect of repair and repopulation cause tumor cells cannot be erased completely while the effects of resenitization (re-oxygenation and redistribution) can facilitate tumor cells to die. It can be seen that the most dominant biological effect is the repair effect on the tumor. This effect can be minimized by reducing the length of dose delivery time. Furthermore, the repair effect on normal tissue can reduce the value of NTCP about 9% compared with other models. By using the ISO-NTCP curve we also get the spinal cord repair time after 15 hours.
Preliminary Assessment of Tidal Stream Power Using 3-Dimensional Hydrodynamic Model in the Lembeh Strait
Authors: Naufal A , Suprijo T , Yosi M , Yusar D 
Published: October 2019

Abstract
This paper provides a preliminary assessment of potential energy of tidal currents in the Lembeh Strait, North Sulawesi. Using two and three dimensional ocean hydrodynamic model, the assessment was done. A nesting method has been applied in order to simulate tidal currents in the Sulawesi Sea and the Lembeh Straits. Three dimensional simulation results at the Lembeh straits was validated using observation data, which are obtained from filed measurement campaign on 3 to 23 April 2016. Estimation of tidal current or tidal stream power was focused in the Lembeh Straits. The simulation results show power density during a tidal cycle can reach maximum value about 72.346,23 W/m2 at full moon condition. This amount of power is stored in the area between Sarena Island and Sulawesi Island. The result of tidal stream power estimation also reveals strong tidal currents that associated with maximum power occur during flood tide condition.
Thermoelectric Performance of Ge0.99-xNa0.01AgxSe
Authors: Gustiani V F , Septiany L , Nugroho A A , Blake G R 
Published: October 2019

Abstract
Doped GeSe has theoretically been predicted to exhibit ultralow thermal conductivity that yields a high figure of merit (ZT) of 2.6 at 800K. However, experimental studies of the thermoelectric performance of GeSe have received little attention due to poor doping efficiency. Doping GeSe with Na is reported to reduce its thermal conductivity due to the growth of Na-rich precipitates, but the electrical resistivity remains too high. In order to suppress both thermal conductivity and resistivity, a co-doping approach was used by introducing Na and Ag. Characterization using scanning electron microscopy indicates the presence of both Ag- and Na-rich precipitates within the GeSe matrix. The resistivity decreases by ∼6 times at high temperature with increasing Ag concentration. However, the thermal conductivity only decreases by ∼1.5 times after Ag doping of about 0.5%. The Seebeck coefficient remains constant with doping at high temperature. Overall, the thermoelectric performance of Na,Ag co-doped GeSe is optimum at around 0.5 mol% of Ag.
CRYO System for studying bioimpedance properties of biological tissue and fluid during cryosurgical operation
Authors: Korolyuk E S , Brazovskii K S 
Published: October 2019

Abstract
This paper presents a cheap and compact system designed to study the impedance properties of the examined objects. This system can be used in medicine to carry out imaging of biological tissue during the cold for operations. One of the main problems of cold application in medicine is the difficulty in determining the boundaries and depth of the cryogenic effect. This problem arises due to the individual characteristics of the tissue, different cooling rates and high temperature gradients during freezing. In order to increase the accuracy in determining the boundaries and depth of the cryogenic effect, the impedance properties of liquid and muscle tissue have been studied. Based on the data obtained from the developed system for the study of impedance properties, based on the AD5933 impedance meter, the obtained data were analyzed at temperatures ranging from minus 18 to plus 25 degrees Celsius in the frequency range from 1 to 100 kHz.
Study of the aerodynamic parameters of the installation, generating wind flow in open space
Authors: Duisenbayeva M S , Neshina Y G , Sh Madi P , Abiljanova F B , Duyssembina A G , Kenzhebek A S 
Published: October 2019

Abstract
The article is devoted to the study of the aerodynamic parameters of the installation, causing wind flow in open space. In the open space, a model of an aerodynamic installation which creates an uneven wind flow rate is presented. To determine the speed at each distance using an aerodynamic model, creating a jet wind, an experiment was conducted. The results of experimental studies to determine the speed when changing the flow rate and rotation number at a distance from 10 cm to 130 cm from the propeller model are given. Experimentally found to reduce the speed in the stream, distributed from the propeller, when y = + 10 cm, y=-10 cm, with increasing distance, and the axial velocity in the stream, distributed from the propeller.
Theoretical foundations of industrial safety in modern conditions
Authors: Borisov A I 
Published: October 2019

Abstract
The service sector in the industrialized countries throughout the world has taken a leading position in the socio-economic life. Thereby, ensuring the improvement of the provided service quality and the expansion of service range are becoming a nationwide business. Service is the economy development as well as the public employment and the basis of stability in society. Moreover, service should be under control; and one of the most efficient ways to provide it with supervision is an expert review. In all countries with a market economy, such expert review (the notion of “inspection” is used abroad) has long taken its place and its influence on the regulation of production activities is quite favorable [1].
Numerical simulation of non-destructive remote field eddy current testing of rolled metal tubes
Authors: Efimov A G , Kanter B M , Kuzelev N R , Martyanov E V , Shubochkin A E 
Published: October 2019

Abstract
The distinctive feature of remote field eddy current method is the ability of detecting defects on the external (with respect to the eddy current transducer) side of the tested object, which is impossible for the classical eddy current method due to the limited eddy current penetration depth. The basics of the method were considered, the distinctive features were presented, and the advantages and disadvantages of remote field eddy current testing of metals were pointed out. A numerical simulation with the subsequent analysis of the obtained results has been carried out, the probe design for remote field eddy current testing is given. The influence of various factors on the change in the added voltage of the eddy current probe in the presence of a defect in the external wall of the tube was considered. Expressions that determine the optimal ratio of the diameters of the probe and the tested product were obtained. The values of the test parameters and the limiting wall thickness of the tested ferromagnetic product were determined.
Usage of dual-channel radiation thermometers in dusty environment
Authors: Chernysheva N S , Ionov A B , Ionov B P 
Published: October 2019

Abstract
The article presents the simulation results of noncontact temperature measurements uncertainty (in the measurement range of 350…750 °C), which were performed using dual-channel radiation thermometers through a cloud of clinker dust in the cases of different dust concentrations. It is shown that the use of dual-channel spectral ratio radiation thermometers is more efficient compared to single-channel measuring instruments. According to the simulation study the best results in terms of the uncertainty level of dual-channel radiation thermometer were obtained by the using in its design the couple of a wide-band and a narrow-band measuring sensors. It is proven that in order to cover the entire temperature range of 350…750°C with an acceptable level of uncertainty, it is advisable to utilize the dual-channel radiation thermometer in the combined single-channel and dual-channel mode of operation.
Numerical simulation of electromagnetic-acoustic transformation using Jiles-Atherton magnetic hysteresis model
Authors: Myshkin Yu V , Volkova L V 
Published: October 2019

Abstract
The paper presents the results of numerical simulation of electromagnetic-acoustic transformation using Jiles-Atherton magnetic hysteresis on the example of excitation and reception of a transverse wave through the thickness of the reference block CO-2 based on the W-shaped magnetic core and inductor in the form of a meander coil with in-phased conductors. Distributions and graphs of time dependence for the magnetic field, the field of eddy currents and the field of elastic deformations are given in comparison with the classical modeling approaches. Satisfactory convergence of the simulation results with experimental data was established by the example of the signal received by the inductor, the distribution of the normal component of the magnetic flux density in the gap of inductor positioning and the calculated double transformation coefficient.
Fiber optic sensor systems for non-destructive monitoring of “smart buildings”
Authors: Gizeev M M , Denisenko P E , Lipatnikov K A , Kuznetsov A A , Denisenko E P 
Published: October 2019

Abstract
The article presents the solution of the actual problem of complex monitoring of external influence parameters for urban infrastructure facilities of a “smart” city. The main characteristics of fiber-optic sensors and their sensing systems are shown. Their advantages over traditional technologies for the development of monitoring directions in “smart” cities are indicated. Solutions using fiber-optic sensor networks based on quasi-distributed systems are presented.
Effect of averaging of high-resolution cardiac signals in medical diagnostics using Simson’s method
Authors: Wenjia Guo , Ivanov M L , Turushev N V , Avdeeva D K , Yuzhakov M M 
Published: October 2019

Abstract
Simson’s method employed in cardiological diagnostics detects the presence or absence of late ventricular potentials to indicate cardiac pathologies. It has been a long time since the development of Simson’s method, but it is still used in clinics and is often mentioned in studies related to high-resolution ECGs and averaging of ECG signals. An optimal algorithm of high-resolution ECG averaging was chosen and implemented in this study. Efficiency of Simson’s method was assessed on the cardiac signal recorded using a modern hardware and software complex. The result of the study showed no relationship between late ventricular potentials and localized micropotentials on the ST interval in individual cardiac pulses.