bluuebunny/crossref_metadata_2025_split huggingface dataset:
49.35 MHz GBW and 33.43 MHz GBW amplifiers in flexible a‐IGZO TFT technology
Authors: Meister T. , Ishida K. , Sou A. , Carta C. , Ellinger F. 
Published: May 2020

The authors present the implementation of two amplifiers in a commercial flexible amorphous Indium Gallium Zinc Oxide (a‐IGZO) thin‐film transistor (TFT) technology: a Cherry Hooper (CH) amplifier and a 4‐stage common source amplifier. The CH amplifier is designed as a pre‐amplifier for wireless receivers. It is optimised for a high gain‐bandwidth product (GBW). From a supply voltage of V it provides 19.4 dB gain and has a ‐bandwidth of 5.3 MHz, while consuming 0.2 mW. It has a GBW of 49.35 MHz, which is more than a factor two better than previously reported a‐IGZO TFT amplifiers. The 4‐stage common source amplifier is designed as output buffer, has a very wide range of operating conditions and strong robustness against manufacturing tolerances. From a supply voltage of V it provides 28.9 dB gain, has a ‐bandwidth of 1.2 MHz, and a GBW product of 33.43 MHz, while consuming 14.2 mW. Both circuits can operate from a supply voltage between 2.5 and 10 V.
Star formation in outer rings of S0 galaxies
Authors: Sil’chenko O. , Moiseev A. 
Published: May 2020

Aims. Even though S0 galaxies are usually thought to be ‘red and dead’, they often demonstrate star formation organised in ring structures. We try to clarify the nature of this phenomenon and the difference between this occurrence and star formation in spiral galaxies. The luminous S0 galaxy with a large ring, UGC 5936, is studied in this work.
Methods. We measured gas and star kinematics by applying long-slit spectroscopy along the major axis of UGC 5936, as well as Lick indices for the main body of the galaxy and strong emission-line flux ratios in the ring. After inspecting the gas excitation in the ring using line ratio diagnostic diagrams and having ensured that it is ionised mostly by young stars, we determined the gas oxygen abundance with popular strong-line methods. We also proved the spatial proximity of the south-eastern dwarf satellite to UGC 5936 and measured its gas metallicity.
Results. The ionised gas of the ring is excited by young stars and has solar metallicity. Star formation in the ring is rather prolonged and its intensity corresponds to the current HI content of UGC 5936 (to the Kennicutt-Schmidt relation). The whole morphology of the HI distribution implies current accretion of the cold gas from the satellite onto the outer disc of UGC 5936. The accretion being smooth and laminar provides a favourable condition for star formation ignition; this is a consequence of the satellite location and rotation in the plane of the stellar disc of the host galaxy.
Druckpathologien der Wirbelsäule (LWS)
Authors: Corts Magga 
Published: May 2020

SummaryBei einem Bandscheibenvorfall ist die gängige Vorstellung, dass ein Teil der Bandscheiben den Spinalnerv komprimiert. Aber die Funktionseinheit Wirbel, Nerv und Bandscheibe ist sehr viel komplexer, und der Druck auf den Nerv hängt von vielen anderen Faktoren ab. Auch existieren zahlreiche weitere Druckpathologien der Wirbelsäule, die nicht oder indirekt mit der Bandscheibe zusammenhängen.
Klopfen gegen die Angst
Authors: Franke Rainer , Franke Regina 
Published: May 2020

SummaryDie MET-Klopftherapie wurde vom Autor als Synthese chinesischer Akupressurtechniken und westlicher Psychotherapie als schnell wirksame Kurzzeitbehandlung entwickelt. Durch Beklopfen sechs charakteristischer Punkte und gleichzeitigem Fokussieren des belastenden Gefühls löst sich dieses zunehmend auf. Die Methode eignet sich unter anderem bei Ängsten, Trauer, Zwängen und Selbstwertstörungen und lässt sich sehr gut mit anderen harmonisierenden Techniken wie Atemübungen oder Punktmassage kombinieren.
Genetic association research in football: A systematic review
Authors: McAuley Alexander B. T. , Hughes David C. , Tsaprouni Loukia G. , Varley Ian , Suraci Bruce , Roos Thomas R. , Herbert Adam J. , Kelly Adam L. 
Published: May 2020

AbstractGenetic variation is responsible for a large amount of the inter‐individual performance disparities seen in sport. As such, in the last ten years genetic association studies have become more common; with one of the most frequently researched sports being football. However, the progress and methodological rigour of genetic association research in football is yet to be evaluated. Therefore, the aim of this paper was to identify and evaluate all genetic association studies involving football players and outline where and how future research should be directed. Firstly, a systematic search was conducted in the Pubmed and SPORTDiscus databases, which identified 80 eligible studies. Progression analysis revealed that 103 distinct genes have been investigated across multiple disciplines; however, research has predominately focused on the association of the ACTN3 or ACE gene. Furthermore, 55% of the total studies have been published within the last four years; showcasing that genetic association research in football is increasing at a substantial rate. However, there are several methodological inconsistencies which hinder research implications, such as; inadequate description or omission of ethnicity and on‐field positions. Furthermore, there is a limited amount of research on several key areas crucial to footballing performance, in particular; psychological related traits. Moving forward, improved research designs, larger sample sizes, and the utilisation of genome‐wide and polygenic profiling approaches are recommended. Finally, we introduce the Football Gene Project, which aims to address several of these limitations and ultimately facilitate greater individualised athlete development within football.
Tunable magnetic anisotropy in Cr–trihalide Janus monolayers
Authors: Albaridy Rehab , Manchon Aurelien , Schwingenschlögl Udo 
Published: May 2020

Abstract
Achieving a two-dimensional material with tunable magnetic anisotropy is highly desirable, especially if it is complemented with out-of-plane electric polarization, as this could provide a versatile platform for spintronic and multifunctional devices. Using first principles calculations, we demonstrate that the magnetic anisotropy of Cr–trihalides become highly sensitive to mechanical strain upon structural inversion symmetry breaking through the realization of Janus monolayers. This remarkable feature, absent in pristine Cr–trihalide monolayers, enables mechanical control of the direction of the easy axis: biaxial compressive/tensile strain supports in-plane/out-of-plane orientation of the easy axis. The magnetic exchange itself shows higher sensitivity to compressive than to tensile strain, while in general the Janus monolayers maintain ferromagnetic ordering in the studied range of strain.
Data-driven exploration and continuum modeling of dislocation networks
Authors: Sudmanns Markus , Bach Jakob , Weygand Daniel , Schulz Katrin 
Published: May 2020

Abstract
The microstructural origin of strain hardening during plastic deformation in stage II deformation of face-centered cubic (fcc) metals can be attributed to the increase in dislocation density resulting in a formation of dislocation networks. Although this is a well known relation, the complexity of dislocation multiplication processes and details about the formation of dislocation networks have recently been revealed by discrete dislocation dynamics (DDD) simulations. It has been observed that dislocations, after being generated by multiplication mechanisms, show a limited expansion within their slip plane before they get trapped in the network by dislocation reactions. This mechanism involves multiple slip systems and results in a heterogeneous dislocation network, which is not reflected in most dislocation-based continuum models. We approach the continuum modeling of dislocation networks by using data science methods to provide a link between discrete dislocations and the continuum level. For this purpose, we identify relevant correlations that feed into a model for dislocation networks in a dislocation-based continuum theory of plasticity. As a key feature, the model combines the dislocation multiplication with the limitation of the travel distance of dislocations by formation of stable dislocation junctions. The effective mobility of the network is determined by a range of dislocation spacings which reproduces the scattering travel distances of generated dislocation as observed in DDD. The model is applied to a high-symmetry fcc loading case and compared to DDD simulations. The results show a physically meaningful microstructural evolution, where the generation of new dislocations by multiplication mechanisms is counteracted by a formation of a stable dislocation network. In conjunction with DDD, we observe a steady state interplay of the different mechanisms.
Strong nonlinear optics in on-chip coupled lithium niobate microdisk photonic molecules
Authors: Wang Min , Yao Ni , Wu Rongbo , Fang Zhiwei , Lv Shilong , Zhang Jianhao , Lin Jintian , Fang Wei , Cheng Ya 
Published: May 2020

Abstract
High-quality lithium niobate (LN) thin-film microresonators provide an ideal platform for on-chip nonlinear optical applications. The strict phase-matching condition should be satisfied for an efficient nonlinear optical process, which requires dispersion engineering with an LN microresonator. However, this is challenging in single microresonator, resulting from the fabrication error. Here, we demonstrate strong nonlinear effects in a photonic molecule (PM) structure composed of two strongly coupled lithium niobate microdisks. The size mismatch of the microdisks enables phase matching by employing coupling-induced frequency splitting to compensate for the material and geometric dispersion. With a continuous wave excitation, rich nonlinear optical phenomena including cascaded four-wave mixing and stimulated Raman scattering were observed around the second harmonic signal. Meanwhile, an ultra-high four-wave mixing absolute conversion efficiency of 14% as obtained when the second harmonic signal power is at microwatts level. The LN PM is of great potential for applications in nonlinear integrated photonics.
Bound states in the continuum in abruptly terminated dielectric slab waveguides
Authors: Bezus E A , Bykov D A , Doskolovich L L 
Published: May 2020

Abstract
We demonstrate that dielectric slab waveguides terminated with a dielectric ridge (i.e. with a slab waveguide segment having a greater thickness) support high-Q resonances and bound states in the continuum (BICs). The resonances and BICs take place at oblique incidence of TE-polarized guided modes in the total internal reflection geometry, when all the incident radiation is reflected at the end facet of the ridge and is not scattered out of the waveguide. We derive a simple coupled-wave model rigorously proving the BIC existence and predicting its locations. The predictions of the model are in an excellent agreement with the results of the rigorous numerical simulations. We also discuss the influence of the symmetry of the structure on the BIC existence. The obtained results may be useful for the design of novel integrated nanophotonic devices.
Wireless Sensor Network Data Communication and Information system to Regulate Water Volume and Turbine Rotation
Authors: Zefi Suzan , Susanti Eka , Halimahtussa’diyah R.A , Sholihin  , Fakhirah Amirah 
Published: May 2020

Abstract
The increasing need for electrical energy makes innovation in creating alternative energy is needed to help meet the needs of electrical energy that is more efficient and environmentally friendly. Therefore, the selection of water turbines as alternative energy because the cost of building hydropower is relatively low and environmentally friendly, making it a competitive source for renewable energy. Wireless Sensor Network (WSN) is a wireless network consisting of several sensor nodes that are individual that are used to monitor the condition of a place and can interact with its environment by means of sensing, controlling and communication to its physical parameters. The application of WSN to water turbines as a power plant is used to control and remotely monitor water turbines. So that it allows users to get maximum information and is real time without having to be in the sensor area. The programming used for this tool is the Basic Compiler AVR and Virtual Basic to display data in the form of graphs. Then the programming will be analyzed which has been entered at ATMega128 and ATMega8, which is programming to measure the height of the water tank and control the output of the tool.
Implementation of DSK TMS320C6416T Module in Modified Stethoscope for Lung Sound Detection
Authors: Pratama D A , Husni N L , Prihatini E , Muslimin S , Homzah Ozkar F. 
Published: May 2020

Abstract
This paper presents a design of digital stethoscope that is modified using DSK TMS320C6416T. This modified stethoscope is proposed for helping the doctor to make a true decision and the same perception on the symptoms of someone’s disease. Using the conventional stethoscope usually gives drawback, such as the doctors usually makes misinterpretation on the auscultation. The reason is because of the errors that occur due to the difference on the sensitivity of the ear and the experiences of the doctor. This research offers a DSK TMS 320C6416T as an instrumentation system for identification and analysis on the lung sound. The modified design of the digital stethoscope that is proposed in this research gives benefit to the users because it provides the result in the form of the signals that can be monitored in the PC. The results of this designed stethoscope showed the interpretation of graphs in the form of the spectrogram and scalogram which will help the simplification on the analysis of lung sounds as well as to minimize or avoid the limitations of hearing problems in the process of auscultation. The method used in lung sound analysis in this research includes Fourier Transformation that is then developed into a Short-Time Fourier transform (STFT) and continued to the Wavelet Transform. Based on the test data for normal lung sounds, it was found that the working frequency range was 90 to 1265 Hz. The adventitious sounds were found with frequency range from 60 to 1980 Hz. In this research, it was also found that the lung sounds were at the frequency range from 90 to 1015 Hz for direct measurement to patients.
Development and Feasibility Analysis of Floating Solar Panel Application in Palembang, South Sumatra
Authors: Junianto Benny , Dewi Tresna , Sitompul Carlos R 
Published: May 2020

Abstract
PV system utilize the photovoltaic effect to generate electricity directly from the energy brought by the sunrays. However, the normal ground installation of PV panel is prone to several effect reducing the power output and efficiency, such as the overheated panel surface that can lead to malfunction of a cell. The alternative for ground installation is installing the PV panel on the surface of a water body such as river or lake, and called Floating Solar Panel. This paper presents the pilot project for application of floating solar panel in Palembang. This setting is also functioning as passive or natural cooling for the panel and increase the power output. The pilot project was conducted on August 2-8, 2019 by comparing two 100 Wp Poly-crystalline PV panels. The passive cooling of floating solar panel can reduce surface temperature by 2
o
C compared to ground installation. The experiment shows the most effective time to harvest the power from the sun is from 11.00 AM to 02.00 PM. The average output power generated by Floating Solar Panels is 51.6 Watts, compared to 42.9 Watt Ground Solar panels.
Intelligent Evolutionary Controller for Flexible Robotic Arm
Authors: Jamali Annisa , Mat Darus Intan Z. 
Published: May 2020

Abstract
Robotic is one of the key technologies towards Industrial Revolution 4.0. Robotic system, especially robotic arm have received tremendous demand in various fields especially manufacturing industry. Robotic arm is highly needed to enhance production, improve output, reduce human error and the most importantly, earn more profit with fast return on investment. The current industrial robotic arm, not only they are very expensive and required specialist for maintenance, they are also very heavy and difficult to manoeuvre. These facts are the reason why robotic solution are still unaffordable in most small and medium manufacturing industries in developing countries. Despite all the drawbacks, there is still a pressing need to employ robotics solution with the inherent problems of worker-related issues and output quality. Today, work requires a nimble and versatile robot and yet remain reliable. Operating robots should be simpler, where the learning curve is less steep. The user interface should be friendly and intuitive. Recently, there is a growing interest in employing lightweight, stronger and more flexible robotic arm in various fields. However, lightweight robot arm can be more easily influenced by unwanted vibrations, which may lead to problems including fatigue, instability and performance reduction. These problems may eventually cause damage to the highly stressed structures. This research focused on the development of the intelligent evolutionary controller algorithms for controlling flexible robotic arm manipulator. The controller algorithm has been formulated for trajectory planning control and vibration cancelation utilizing intelligent evolutionary algorithms such as Particle Swarm Algorithm and Artificial Bees Colony. The developed evolutionary algorithms have been implemented and experimentally verified using robotic arm manipulator experimental rig. The performances of these intelligent evolutionary controllers were found to be far better than the conventional method in term of input tracking, trajectory control and vibration cancelation.
Scoopy Blade for Low Current River Waterwheel Supporting the Energy Needs in the Rural Areas of Indonesia
Authors: Darmawi  , Sipahutar Riman , Bizzy Irwin 
Published: May 2020

Abstract
A series of experiment has been carried out to measure the effectiveness of the new rotor blades of waterwheel in order to absorb as much as possible the energy of flow water. The scoopy blade is predicted convert more effectively and efficiently the water energy into useful mechanical energy compared to flat blade. This blade is intended to used for undershot waterwheels operated in low current rivers in Indonesia. The scoop blades are tested at a flow range from 0.8 m / sec - 2.5 m / sec in the range of gamma angle 100, 150 and 200. All results are compared to the flat blade where gamma angle is zero. The test results show the scoopy blade with gamma angle 100 is effectively harnessed the water energy compared to others. The blades with gamma angle 100 produce bigger power and bigger efficiency than blades of other gamma angles.
Design Control Systems of Marking Machine and Total Length Check Damper Assembly Based on Programmable Logic Controller
Authors: Ardi Syahril , Ardianto Juliantito 
Published: May 2020

Abstract

This research was conducted at an automotive manufacturing company in Indonesia that produces shock absorber (damper). Case study was conducted on the front shock absorber of the motorcycle (front fork). This new product will be given special marking at the designated place. Previous Front Fork products did not have a marking process at the Front Fork Assembly Line. We designed the marking machine control system. This machine control system uses the main MC2000N machine actuator and MC2000T Controller². The machine design is then added to the total length check function. The results obtained are the traceability of the damper made easier and faster in handling claims from the customer. The damper becomes in accordance with the standard.
Study on using Casting Simulation Software for Design and Analysis of Riser Shapes in a Solidifying Casting Component
Authors: Malik Irawan , Anwar Sani Almadora , Medi Ali 
Published: May 2020

Abstract
Filling and solidification of molten metals are very complex and difficult to simulate correctly by conservative methods. For a large industrial application, it needs an alternate approach that is fast, reliable and user-friendly. In current casting industries, product development paradigm is shifting from traditional trial-and-error in the workshop to computer-aided casting design and simulation package by a computer(s). Computer-aided casting simulation plays an important role in the paradigm of new product development by way of modeling entire casting processes and reveals a dynamic behavior of casting scheme in working conditions. This study, highlighting is given on using casting simulation software which helps foundry industries to design and analysis the size and shape of the riser. Intended for simulation simplification in this study, grain size of mold green sand, casting material quality, casting process parameters are deliberated identical for all design schemes. Only the shape and dimensional variances of sprue/risers are taken into considerations for defects analysis. It is found that defects such as micro and shrinkage porosities, and improper solidification, are directly related to gating and risers system. Casting simulation software is used for mold filling and solidification analysis and it is observed that the proposed gating and risers system design will improve casting results with small defects. From this study, the conclusion can be stated that taper sprue design, also acts as a riser, with an additional four small risers that will produce a small fraction of porosity inside of the casting part. Validation of simulation, in the future, will be proved through experimental trials in the foundry shop.
Effect of Catalysts on the Quality of Biodiesel from Waste Cooking Oil by Induction Heating
Authors: Rusdianasari  , Syarif Aida , Yerizam Muhammad , Syahirman Yusi M. , Kalsum Leila , Bow Yohandri 
Published: May 2020

Abstract
The target of increasing the use of renewable fuels is directly proportional to the increasing demand for biodiesel. High demand for biodiesel must be balanced with sufficient availability from producers. One of the factors that influence biodiesel conversion rate is the use of catalysts. The use of sodium teoxide (CH3ONa) catalyst in the manufacture of biodiesel can be applied in the process of biodiesel production using induction heating technology. This technology will accelerate the heating process needed in the transesterification reaction. Based on research that has been done, the use of a catalyst concentration of 1% will produce a yield of 86.95% with product quality in accordance with SNI such as density 0.858 gr/cm3, viscosity 5.727 cSt, flash point 190°C, and acid number 0.439 mg-KOH/gr.
Evaluation of Main Parameter Process of Anaerobic Digestion of Cow Dung in Fixed Dome Biodigester on Methane Gas Quality
Authors: Kalsum Leila , Hasan Abu , Rusdianasari  , Husaini A. , Bow Yohandri 
Published: May 2020

Abstract
Methane gas produced from anaerobic digestion has been widely studied through some of the researches, but the quality of methane gas produced is still a problem because the concentration of methane gas produced is generally low. Biogas formation is a complex process involving several process parameters that must be controlled such as temperature, pH, and fermentation time. Therefore the use of biogas is still problems and it has not been widely used. This study aimed to evaluate the main parameter process of anaerobic digestion of cow dung in fixed dome biodigester on methane gas quality. The research was carried out for 30 days and every 5 days the quality of methane gas (CH4), organic content (COD) and total solids (TSS) were analyzed. From the results of the study, it was found that temperature, pH, and fermentation time greatly effect on biogas produced. at high methane gas concentrations (59,12%) occur at pH 7.1, temperatures 350 C and fermentation time of 25 days. Besides that the longer the fermentation time, the COD and TSS content decreases and the concentration of methane gas increases.