bluuebunny/crossref_metadata_2025 huggingface dataset:
Innovative Teamarbeit? Mobilisierungsroboter assistiert
Physiotherapeutinnen in der stationären Versorgung eines
Universitätsklinikums
Authors: Schiller Jörg , Egen Christoph , Gutenbrunner Christoph , Presuhn Bettina , Seliger Birgit , Grisat Annegret , Sturm Christian
Published: July 2020

Die Robotik beeinflusst zunehmend das Gesundheitssystem und so auch die
Rehabilitationsmedizin. In der Medizinischen Hochschule Hannover wurde ein
innovatives System zur Mobilisierung der unteren Extremitäten von
Patient/innen verschiedener Fachgebiete für 3 Monate
getestet. Retrospektiv wurde ein speziell entwickelter Dokumentationsbogen
ausgewertet, den die Therapeutinnen nach der jeweiligen Behandlung
ausfüllten. Das Fazit aus der Testphase lautet, dass
ROBERT® kein Ersatz therapeutischer
Mitarbeiter/innen, sondern bei bestimmten Patient/innen eine
sinnvolle und entlastende Unterstützung der Behandlung am Patienten
darstellt. Er kann als Add-on-Therapie, unter der Voraussetzung vorhandener
personeller Kapazitäten, oder als Ersatz für
„Hands-On“-Therapie bei weniger komplexen Fällen gut
eingesetzt werden.
Das Hochrisiko-nicht-muskelinvasive-Harnblasenkarzinom (HR-NMIBC) in Zeiten des BCG-Mangels: was für Optionen haben wir?
Authors: Burger Maximilian
Published: July 2020

Das Hochrisiko-NMIBC ist eine Herausforderung, da es zwar noch nicht muskelinvasiv ist, aber eine hohe Progressionsneigung aufweist. Eine Erfassung der Prognosegruppe ist wichtig und über Nomogramme empfohlen. Neben einer gründlichen transurethralen Resektion empfiehlt sich eine adjuvante Therapie mit BCG, was momentan teils aber nur eingeschränkt verfügbar ist. Daneben ist eine hypertherme Chemotherapie untersucht, deren Datenbasis zum jetzigen Zeitpunkt aber keine breite Anwendung rechtfertigt. Neue Ansätze wie die Checkpoint-Blockade-Inhibition werden untersucht, bieten aber keine Möglichkeit zur breiten praktischen Anwendung bei uns. Eine radikale Zystektomie ist daher in Anbetracht der hohen Progressionsneigung bei ungünstiger Tumorkonstellation immer zu indizieren.
Cancer Treatment: An Epigenetic View
Authors: Aydin Cansu , Kalkan Rasime
Published: July 2020

Cancer can be identified as an uncontrolled growth and reproduction of cell. Accumulation of genetic aberrations (mutations of oncogenes and tumor-suppressor genes and epigenetic modifications) is one of the characteristics of cancer cell. Increasing number of studies highlighted importance of the epigenetic alterations in cancer treatment and prognosis. Now, cancer epigenetics have a huge importance for developing novel biomarkers and therapeutic target for cancer. In this review, we will provide a summary of the major epigenetic changes involved in cancer and preclinical results of epigenetic therapeutics.
Apixaban for Stroke Prevention in Atrial Fibrillation: Why are Event Rates Higher in Clinical Practice than in Randomized Trials?—A Systematic Review
Authors: de Vries Tim A. C. , Hirsh Jack , Xu Ke , Mallick Imaad , Bhagirath Vinai C. , Eikelboom John W. , Ginsberg Jeffrey S. , Kruger Paul C. , Chan Noel C.
Published: July 2020

Background Recent reports suggest an important contribution from frequent off-label use of apixaban 2.5 mg twice daily to the higher rates of thromboembolic events observed in observational studies (OSs) relative to in randomized controlled trials (RCTs), and consequently, advocate against such use in all patients.

Objectives To examine factors contributing to the higher thromboembolic event rates, we estimated the prevalence of off-label use in contemporary practice, and compared patient characteristics and rates of stroke/systemic embolism, major bleeding, and mortality by apixaban dose and by study design in a systematic review and meta-analysis.

Results and Discussion We identified 18 OSs and 2 RCTs that included 155,228 and 11,928 patients, respectively. Patients in OSs more often received apixaban 2.5 mg twice daily (31.3% vs. 5.1%), were older (mean age 73.8 vs. 69.8 years), and had higher CHA2DS2-VASc scores (mean 3.6 vs. 2.9) versus those in RCTs. We observed a consistent pattern of higher rates of thromboembolic events, bleeding, and mortality in patients treated with 2.5 versus 5 mg twice daily apixaban in both OSs and RCTs.

Conclusion The higher risk profiles of patients in OSs versus RCTs, and higher rates of both bleeding and mortality not attributable to thromboembolism in patients treated with apixaban 2.5 versus 5 mg twice daily suggest that differences in patient characteristics are additional important contributors to the higher than expected thromboembolic event rates in clinical practice.
A Newborn with Infantile-Onset Pompe Disease Improving after Administration of Enzyme Replacement Therapy: Case Report
Authors: Bor Meltem , Ilhan Ozkan , Gumus Evren , Ozkan Solmaz , Karaca Meryem
Published: July 2020

Pompe disease (PD) is an autosomal recessive lysosomal storage disorder caused by a deficiency of acid α-1,4-glucosidase enzyme (GAA). PD has two forms, namely the infantile-onset and the late-onset form. In untreated cases, infantile-onset form usually leads to cardio-respiratory failure and death in the first year of life. Herein, we report a newborn with infantile-onset PD characterized by muscular hypotonia, respiratory distress, hypertrophic cardiomyopathy, hepatomegaly, elevated serum enzyme levels of aspartate aminotransferase of 117 IU/L (three times the normal value), alanine aminotransferase of 66 IU/L (1.8 times the normal value), lactate dehydrogenase of 558 IU/L (1.2 times the normal value), and creatine kinase >5,000 IU/L (16 times the normal value). Dried blood spot testing was performed and revealed decreased GAA enzymatic activity (0.07 nmol/mL/h, normal 0.93–7.33 nmol/mL/h). GAA gene analysis performed for confirming the diagnosis showed homozygous mutation c.896T >C (p.Leu299Pro). Initiation of enzyme replacement therapy (ERT) (ERT; 20 mg/kg, once every week) at 28 days of age resulted in weaning off from respiratory support within 1 week after treatment, normalization of cardiac abnormalities, and normal neuromotor development in the 16th month of age. Early diagnosis and early treatment with ERT, especially in the neonatal period, is of great importance to improve cardiac function and motor development in infantile-onset PD.
Shop till you drop? Venue choices of business and non-business interests in the European Union
Authors: Pakull Dominic , Marshall David , Bernhagen Patrick
Published: July 2020

The EU offers a variety of access points through which interest groups can attempt to influence policy-making. In this paper, we analyze differences in the use of these access points, or venues, by interest groups. Considering the roles played by different EU institutions along the policy cycle, we argue that the venues differ by the extent to which they encourage lobbying from different interest groups. Analyzing survey responses by more than 700 European interest associations, we find that the distribution of access-seeking by business and non-business actors differs across venues. Reflecting its pivotal role at the pre-proposal stage, the Commission encourages non-business organizations to spend much of their finite lobbying resources. In the context of the European Parliament, non-business groups are not only interested in influencing its decisions, but also in connecting to ordinary Members of the European Parliament. Business groups, for their part, apply greater resources to the rapporteurs. Finally, we show that business groups also allocate their resources to regulatory agencies at the implementation stage in the policy process, where incomplete legislative contracts are finalized and non-business groups’ resources are depleted.
Resistive memory based on single-crystalline black phosphorus flake/HfOx structure
Authors: Yan Xiaoyuan , Wang Xueting , Xing Boran , Yu Ying , Yao Jiadong , Niu Xinyue , Li Mengge , Sha Jian , Wang Yewu
Published: July 2020

Two-dimensional materials are gaining more and more attention in the field of electronic devices because of their unique advantages, such as high crystalline quality and clean and flat contact planes; compared to traditional materials, the use of two-dimensional materials as the working layer of a resistive random-access memory (RRAM) has the potential to further reduce the device size and enhance its performance. Herein, a black phosphorus (BP) single crystal flake passivated by hafnium oxide is used as the working layer for an RRAM. The devices show a switching on/off ratio of 102 in more than 100 cycles, and others can even be as high as 106. We speculated the working mechanism of the BP RRAM based on the results of serial experiments and transport analysis.
Cryptic diversity of the spotted scat Scatophagus argus (Perciformes: Scatophagidae) in the South China Sea: pre- or post-production isolation
Authors: Yan Yun-Rong , Hsu Kui-Ching , Yi Mu-Rong , Li Bo , Wang Wei-Kuang , Kang Bin , Lin Hung-Du
Published: July 2020

The population genetic structure and historical demography of the spotted scat Scatophagus argus along the coast of the South China Sea were examined on the basis of a 1141-bp segment of the mitochondrial DNA cytochrome b gene to resolve difficulties in artificial breeding in Taiwan. In all, 213 samples were collected from 15 locations, and 75 haplotypes were obtained. The haplotypes were divided into two sympatric lineages. The genetic distance between these two lineages was 2.55%. The observed genetic structures are the result of complex interactions of historical events and oceanographic currents. During glaciations, sea level fluctuations played major roles in isolation, and changes in environmental factors affected diversification. The observed genetic patterns imply that these two lineages are not only genetically distinct, but also ecologically distinct populations. Such divergence may contribute to the development of reproductive isolation. These results suggest the existence of cryptic species within S. argus. We considered it possible that many populations from Taiwan Island were introduced from South-east Asia and that the populations in the Gulf of Tonkin originated from these introduced populations from Taiwan. This study offers important resources for the further study of conservation genetics, hybridisation and speciation.
Argumentation in Nigerian investigative public hearings
Authors: Olayinka Unuabonah Foluke
Published: July 2020

This paper examines defendants’ argumentative discourse in the 2008 Nigerian investigative public hearings on the
Federal Capital Territory administration. The data, which consist of nine defendants’ presentations, are analyzed qualitatively,
using a combination of the pragma-dialectical and extended pragma-dialectical theories of argumentation. The findings show that
the hearing panel initially starts of as the institutional protagonist and defendants as the antagonists, and but later serve as
the institutional antagonist and protagonists, respectively. The defendants tend to use analogy and causal argumentation schemes
while employing subordinative and complementary coordinative argumentation structures. The defendants also employ different
strategic maneuvers at different argumentative stages of the critical discussion. Due to the politico-forensic communicative
domain and information-seeking genre of the investigative public hearing discourse, the concluding stage is suspended. Thus, the
study shows the influence of communicative activity type on the argumentative activities in a critical discussion.
Ideology in positivist research articles on issues of teaching English as a foreign language
Authors: Khadivar Ali , Samaie Mahmoud , Ahmadian Moussa
Published: July 2020

The research articles(RAs) as the dominant genre of academic writing can be accounted as the sites of reproduction
of unequal power relations and dominance. Through critical discourse analysis of epistemological and ontological underpinnings and
subsequently methodological aims and values of positivist paradigm as social structures, this article aims to foreground power and
ideology stricken latent aspects of empiricist RAs. Research as a social practice mediates between the social structures and the
RAs as social events. Textual analysis of practical arguments presented mostly in the pedagogical implications part revealed that
the scientific world views manifest themselves as the premises of these arguments. The premises can provide reasons for actions
(Searle’s,2010, social ontology theory). The reasons can signify the empiricist
interests as the global concerns. They exclude the rival paradigms or ways of understanding the world. These world views maintain
the dominance of Western societies on global academic and social discourses.
Quantum noise of a harmonic oscillator under classical feedback control*
Authors: Tang Feng , Zhao Nan
Published: July 2020

Quantum sensing has been receiving researcher’s attention these years due to its ultrahigh sensitivity and precision. However, the bandwidth of the sensors may be low, thus limiting the scope of their practical applications. The low-bandwidth problem is conquered by feedback control methods, which are widely utilized in classic control fields. Based on a quantum harmonic oscillator model operating near the resonant point, the bandwidth and sensitivity of the quantum sensor are analyzed. The results give two important conclusions: (a) the bandwidth and sensitivity are two incompatible performance parameters of the sensor, so there must be a trade-off between bandwidth and sensitivity in practical applications; (b) the quantum white noise affects the signal to be detected in a non-white form due to the feedback control.
Sensitivity enhancement of WS2-coated SPR-based optical fiber biosensor for detecting glucose concentration*
Authors: Cai Yun , Li Wei , Feng Ye , Zhao Jian-Sheng , Bai Gang , Xu Jie , Li Jin-Ze
Published: July 2020

In this paper, we propose a theoretical model of the surface plasmon resonance-based optical fiber biosensor for detecting glucose concentration. The Au/ZnO/WS2 multilayer film is coated around optical fiber. Compared with the conventional surface plasmon resonance sensor, WS2 material can increase the sensitivity of the biosensor. The absorption capacity of WS2 is used to load glucose oxidase by forming a sensitive area to recognize glucose. Refractive index of the solution is calculated and then the concentration of the glucose can be obtained by the correspondence between refractive index and glucose concentration. The highest sensitivity of the SPR biosensor with a structure of 40-nm Au/5-nm ZnO/14 layers of WS2 is 4310 nm/RIU. The proposed WS2-based SPR fiber biosensor has a unique effect on the detection of glucose concentration. It is expected to have potential applications in future medical blood glucose concentration detection.
Energy storage performances regulated by BiMnO3 proportion in limited solid solution films*
Authors: Guo Fei , Shi Zhifeng , Liu Yaping , Zhao Shifeng
Published: July 2020

Na0.5Bi0.5TiO3–BiMnO3 (NBT–BM) limited solid solution films were fabricated to investigate the lattice modification on the energy storage performances. The introduction of the BM solute lattice induces the NBT solvent lattices undergoing the transition from the pure phase, solid solution, solubility limit to precipitation. Correspondingly, the polarization states transfer from the macroscopic ferroelectric domains to nanodomains then to compound ferroelectric domains. The introduction of BiMnO3 generates great lattice changes including the local lattice fluctuation and the large lattice stretching, which enhance the energy storage performances, with the energy storage efficiency being enhanced from 39.2% to 53.2% and 51.7% and the energy density being enhanced from 33.1 J/cm3 to 76.5 J/cm3 and 83.8 J/cm3 for the BM components of 2% and 4%, respectively. The lattice modifications play a key role in the energy storage performances for limited solid solution films, which provides an alternative strategy for energy storage material.
An efficient inverse approach for reconstructing time- and space-dependent heat flux of participating medium*
Authors: Sun Shuang-Cheng , Wang Guang-Jun , Chen Hong
Published: July 2020

The decentralized fuzzy inference method (DFIM) is employed as an optimization technique to reconstruct time- and space-dependent heat flux of two-dimensional (2D) participating medium. The forward coupled radiative and conductive heat transfer problem is solved by a combination of finite volume method and discrete ordinate method. The reconstruction task is formulated as an inverse problem, and the DFIM is used to reconstruct the unknown heat flux. No prior information on the heat flux distribution is required for the inverse analysis. All retrieval results illustrate that the time- and space-dependent heat flux of participating medium can be exactly recovered by the DFIM. The present method is proved to be more efficient and accurate than other optimization techniques. The effects of heat flux form, initial guess, medium property, and measurement error on reconstruction results are investigated. Simulated results indicate that the DFIM is robust to reconstruct different kinds of heat fluxes even with noisy data.
Room-temperature electric control of exchange bias effect in CoO1 – δ/Co films using Pb(Mg1/3Nb2/3)0.7Ti0.3O3 (110) substrates*
Authors: Wen Xin , Wu Rui , Yang Wen-Yun , Wang Chang-Sheng , Liu Shun-Quan , Han Jing-Zhi , Yang Jin-Bo
Published: July 2020

Significant electric control of exchange bias effect in a simple CoO1–δ
/Co system, grown on piezoelectric Pb(Mg1/3Nb2/3)0.7Ti0.3O3 (110) (PMN-PT) substrates, is achieved at room temperature. Obvious changes in both the coercivity field (H
C) and the exchange bias field (H
E), of 31% and 5%, respectively, have been observed when the electric field is applied to the substrate. While the change of coercivity is related to the enhanced uniaxial anisotropy in the ferromagnetic layer, the change of the exchange bias field can only originate from the spin reorientation in the antiferromagnetic CoO1–δ
layer caused by the strain-induced magnetoelastic effect. A large H
E/H
C > 2, and H
E ∼ 110 Oe at room temperature, as well as the low-energy fabrication of this system, make it a practical system for spintronic device applications.
Dynamical interactions between higher-order rogue waves and various forms of n-soliton solutions (n → ∞) of the (2+1)-dimensional ANNV equation
Authors: Hoque Md Fazlul , Harun-Or-Roshid  , Alshammari Fahad Sameer
Published: July 2020

We present new lemmas, theorem and corollaries to construct interactions among higher-order rogue waves, n-periodic waves and n-solitons solutions (n → ∞) to the (2+1)-dimensional asymmetric Nizhnik–Novikov–Veselov (ANNV) equation. Several examples for theories are given by choosing definite interactions of the wave solutions for the model. In particular, we exhibit dynamical interactions between a rogue and a cross bright-dark bell wave, a rogue and a cross-bright bell wave, a rogue and a one-, two-, three-, four-periodic wave. In addition, we also present multi-types interactions between a rogue and a periodic cross-bright bell wave, a rogue and a periodic cross-bright-bark bell wave. Finally, we physically explain such interaction solutions of the model in the 3D and density plots.
Towards the Increase in Granularity for the Main Hadronic ATLAS Calorimeter: Exploiting Deep Learning Methods
Authors: Gaspar Philipp
Published: July 2020

During the second phase upgrade program developed for LHC and its experiments, the main hadronic calorimeter of ATLAS (TileCal) will replace completely its readout electronics, but the optical signal pathway and detector will be kept unchanged. During the R&D studies for the upgrade, initial analyses for improving the calorimeter granularity were made. A granularity improvement could be achieved through the introduction of Multi-Anode Photomultiplier Tubes (MA-PMTs) into the calorimeter readout chain, together with applications of image processing algorithms for identifying sub-regions on calorimeter cells. This paper presents the latest results from using a Generative Adversarial Network (GAN) to generate synthetic images, which simulate real images formed in the MA-PMT. After the classification of cell sub-regions, preliminary results show a classification accuracy of more than 98% on the experimental test set.
Weak signal extraction using matrix decomposition, with application to ultra high energy neutrino detection
Authors: Prohira S
Published: July 2020

In radio-based physics experiments, sensitive analysis techniques are often required to extract signals at or below the level of noise. For a recent experiment at the SLAC National Accelerator Laboratory to test a radar-based detection scheme for high energy neutrino cascades, such a sensitive analysis was employed to dig down into a spurious background and extract a putative signal. In this technique, the backgrounds are decomposed into an orthonormal basis, into which individual data vectors (signal + background) can be expanded. This expansion is a filter that can extract signals with amplitudes ∼1 % of the background. This analysis technique is particularly useful for applications when the exact signal characteristics (spectral content, duration) are not known. In this proceeding we briefly present the results of this analysis in the context of test-beam experiment 576 (T576) at SLAC.
An analysis of need and design of m-learning using scientific approach on electricity material in senior high school to stimulate higher order thinking skills
Authors: Zulmaidah Z , Suyatna A , Rosidin U
Published: July 2020

The purpose of this research is to create m-learning design can be used as learning supplement using scientific approach for stimulating students higher order thinking skill. This research used R and D method of ADDIE (Analyze, Design, Develop, Implementation, Evaluation), in this article limited to the design stage. The sample of need analysis consists of 67 Senior High School student and 14 Physics teacher in Lampung. The data of m-learning need is collected using a questionnaire and analyzed using quantitative descriptive analysis. Test design is carried out by the expert of physics (teacher and lecturer of physics). The result of this experiment are (1) scientific approach is not totally applied in physics learning in class yet. (2) lack of supportable learning media straightaway with K-13. (3) Teacher and student need supportable media matched with K-13 that is m-learning. M-learning design which uses a scientific approach for Electricity lesson has some characteristics such as interactive, having educative content, interactive module, presentation material, having electricity animation and videos, experiment simulation, summary, hyperlink to another sources, task, quiz, and discussion forum. The learning steps consist of observing, asking, trying, associating, and communicating. Synchronous learning activities are carried out for discussion forums, asynchronous for the other of it.
Analysis of gravity anomaly for groundwater basin in Bandar Lampung city based on 2D gravity modeling
Authors: Zaenudin A , Risman R , Darmawan I G B , Yogi I B S
Published: July 2020

The research aims to delineate the groundwater basin in Bandar Lampung from gravity anomaly. Field data acquisition was carried out at 403 points with a spacing of 2-3 km, covering the Bandar Lampung and surrounding areas. Data processing through gravity data corrections, namely drift, tide, Free Air, Bouguer and Terrain using Geosoft Oasis Montaj 8.3. The Bouguer density used is 2.67 gr/cm3. For the anomaly separation, spectrum analysis and regional and residual anomaly separation were carried out, whereas 2D modeling was carried out by forward modeling. This basin boundary analysis is based on gravity residual anomaly patterns, gravity Second Vertical Derivative (SVD) analysis, and 2D gravity modeling. There are two low residual anomaly patterns (-22 to -5 mGal), where the boundaries of the basin can be clearly delineated from SVD analysis. This 2D model shows layers with a density of 2.3 gr/cm3 which are the Young Volcano Formation (Qhv) and the Lampung Formation (QTl) which have depths of up to 1.0-1.5 km. This Groundwater Basin correlates well with the hydrological pattern with a water discharge of 5 to 100 l/sec.
Analysis of mineral sediment characteristics of Bantimurung Bulusaraung National Park in the Karst Maros Region
Authors: Arsyad M , Ihsan N , Tiwow V A
Published: July 2020

Research has been carried out to describe the profile of the sediment layer and analyze the composition of sediment minerals in the former mine area of the Karst Maros area. Data is collected by measuring in the field in one of the former mining areas using a geoelectric tool. The measured data are current strength, voltage, and then an analysis is performed to obtain the value of resistance and resistance using the Wenner configuration. The results of the analysis were processed using Res2dinV software to obtain resistivity cross-sections in the measurement area. Processing results obtained by sedimentary profiles in the former mine area of the Maros Karst Area in the form of layers at resistivity values in the range of 0.17 Ωm to 7.80 Ωm and the corresponding types of material are groundwater, sand, clay, and limestone. The varying resistivity value is around a depth of up to 6 m. After this depth, the bedding will have almost the same material as hard limestone. While the mineral composition in the Karst Maros Region consists of chalcopyrite, galena, pyrite, pyrrhotite, magnetite, cassiterite, hematite, and clay.
Comprehensive theoretical studies on stable and radioactive isotopes produced by proton irradiation of titanium target
Authors: Kambali I
Published: July 2020

Natural titanium (natTi) has been suggested to be used as a window or target body in cyclotron-based medical radionuclide production. Therefore, comprehensive theoretical studies regarding impurities that might contribute to proton bombardment of Ti window are of great interest. In this investigation, the TALYS code was employed to calculate nuclear cross-sections of natTi(p,n), natTi(p,2n), natTi(p,α), natTi(p,d) and natTi(n,γ) reactions. The calculations were simulated for proton energies between 1 to 60 MeV. Based on the calculated results, several vanadium (V) radionuclides, e.g. 46,47,48,49,50V were predicted to be generated from natTi(p,n) reaction, whereas vanadium (V) radionuclides, namely 45,46,47,48,49V could be produced from natTi(p,2n) reaction. Some scandium radionuclides, e.g. 43,44,46,47Sccould be resulted from natTi(p,α) reaction, while stable 45Sc isotope was also predicted from this reaction. For natTi(p,d) reaction, 45Ti radionuclide was expected to be generated, while other stable 46,47, 48,49,50Ti atoms could be created as a result of this nuclear reaction. In addition, stable isotope 46Sc was expected to be produced from 46Ti(p,2p)45Sc reaction, while 46,47,48,49Sc radionuclides were foreseen from 47,48,49,50Ti(p,2p) reaction. In the event of secondary neutrons were reflected back and hit the natTi target, several stable 47, 48,49,50Ti atoms were predicted to be produced, whereas short-lived 51Ti radioisotope was expected to rise from 46Ti(p,d)45Ti reaction. This theoretical data could be useful for future radionuclide production should natTi is used as a target window instead of Havar.
Development of a robust mobile robot for volcano monitoring application
Authors: Evita M , Zakiyyatuddin A , Seno S , Kumalasari R , Lukado H , Djamal M
Published: July 2020

Indonesia is one of the countries that lies in the pacific ring of fire, the highlighted area that known to be active by seismic and volcano activities. Indonesia has a total of 129 active volcanoes that make the land fertile, but also vulnerable to disaster. When a volcanic eruption occurs, the current fixed monitoring system is not fully reliable. On the other hand, monitoring of further volcano activities is critically needed in this situation. Therefore, a volcano monitoring system that can move freely and controlled safely is needed. To solve this problem, a mobile robot that capable of moving in volcano area has been developed. The robot locomotion system is designed with 2 DC motor using 4-wheel drive configuration. Each motor implements a PID Controller to adjust the speed that has been set. In addition, the robot is also equipped with a camera (Logitech C920), vibration sensor (ADXL 345), temperature sensor (DHT 11), carbon dioxide gas sensor (MG-811), and sulphur dioxide gas sensor (TGS 2602) to retrieve volcanic condition data, as its function for volcano monitoring. The microcontroller used to adjust motor control and read sensors data is Nucleo STM32-F466RE, while the mini-PC that being used for integrated data communication and processing is Raspberry PI 3B+. PID Controller has been successfully applied with average deviation of 2.5% for the left motor, and 2.75% for the right motor.
Elemental analysis of agriculture soil by a pulsed carbon dioxide (CO2) Laser Induced Breakdown Spectroscopy (LIBS)
Authors: Idris N , Susilayani D , Sari A M , Lahna K , Ramli M , Kurihara K , Marwan
Published: July 2020

Quick qualitative elemental analysis of agriculture soil has been made using a pulsed CO2 LIBS. The laser beam with different pulse energy was focused on agriculture soil sample under ambient of helium at atmospheric pressure (760 Torr) after the laser beam passes through a covering metal mesh. Emission spectra from the consequent plasma was recorded in wavelength range from 200 nm to 800 nm. It was found that by utilizing the mesh, intense plasma was generated immediately after the CO2 laser irradiation. It was seen that emission lines belong to salts, namely Ca, Mg, Na, K and metals such as Al, Si, Fe, Ti, Cr can certainly be identified. It was also found that the profile of the emission spectrum detected are basically relative similar to the standard soil, nevertheless the agriculture soil color is very different from the standard soil. Higher resolution and sensitivity optical multichannel analyzer (OMA) system is required to evaluate in greater detail the elemental composition of the soil samples.
Escape hill development as a strategy to improve urban safety after earthquake and tsunami Aceh 2004 based on regional planning and geotechnical aspect
Authors: Munirwansyah M , Munirwan H , Irsyam M , Munirwan R P
Published: July 2020

This paper examines urban safety of coastal zone in Banda Aceh city, based on multidisciplinary aspect. Firstly, from the perspective of geophysics aspect, the disasters are affected by the imbalance of the law of action-reaction, that material experiences repeated recurring collapse in return-period. Secondly, geotechnical considerations are a required to ensure the safety aspect in term of construction of escape hill. Lastly, from regional planning aspect, this research finds that the increasing of immigrating population to the high-risk coastal zone has not been followed by the development of evacuation facilities, amongst are escape hills. One consideration in escape hill development is the influence of freeboard and run up level, to obtain a safe embankment height and soil bearing capacity. Based on the soil properties c=0.03 kN/m2 and φ=32.5º was able to build escape hill up to a height of 8.00 m in stable with safety factor SF=2.6. Material sets with these variations can be proposed to establish the term of reference and detail engineering design in carrying out the escape hill construction at this location. This research finds that it is needed to build 12 more evacuation sites to improve urban safety in Banda Aceh City.
Exploring teacher perception about STEM learning material to foster students understanding of dispersion concept
Authors: Normayanti E , Abdurrahman A , Herlina K
Published: July 2020

In the 21st century, the required human resources must be of high quality and possess high-level thinking skills, including critical, creative, innovative. Thus, the teacher’s role is needed to develop these skills in preparing appropriate learning. The design of a learning plan must be able to accommodate the needs associated with the learning process in class. Activities undertaken as well as the results to be achieved through indicators of achievement must be fully reflected in the learning plans. This research was conducted to analyze teacher perceptions of STEM learning to improve understanding of diffraction concepts. The research method used qualitative methods. Data obtained from document analysis and in-depth interviews. This study involved 75 respondents/educators in physics who were scattered throughout the region in Lampung Province. The results showed the tendency of teachers to still use conventional learning methods. This was identified from the learning implementation plan and student worksheets compiled by the teacher had not developed learning innovations that can train students improving the understanding of concepts. So in future research, it is necessary to develop teaching materials that are integrated with STEM, so that they can improve students’ conceptualization and skills.
Mineral identification of rocks from Pohon Batu hot springs in West Seram using FTIR spectroscopy
Authors: Risakotta M Y S , Andayany H
Published: July 2020

This study demonstrates the Fourier Transform Infrared (FTIR) spectroscopy which has been applied to identification of mineral rocks from Pohon Batu hot springs, West Seram regency, Province of Maluku. FTIR spectroscopic interpretation are absorbance or transmittance spectra as a function of wavelength that shows the content of organic compounds found in rocks. From the conditions of mineral formation and presence of various impurity ions and elements also influence the intensity and position of the IR absorption peaks. This study identified the strong peaks of minerals like kaolinite at 3618 cm−1, montmorillonite at 1612 cm−1, organic carbon at 2924 cm−1, quartz at 1874 cm−1, calcite at 1797 cm−1, albite at 1026 cm−1, illite at 756 cm−1 and hematite at 532 cm−1. From the result of FTIR analysis indicates that this area has undergone hydrotermal alteration thus becoming a secondary minerals. Rock-forming minerals in the hydrothermal alteration process are influenced by the presence of temperature, pressure in geothermal fluids and the decomposition of plants and animals.
Optimizing the use of smartphones for M-learning as a supplement for magnetic learning with a scientific approach
Authors: Puspita N M , Suyatna A , Rosidin U
Published: July 2020

The purpose of this study was to optimize smartphone utilization for m-learning as a supplement to magnetic learning with a scientific approach that could be used in learning without limitation of space and time. The research method was based on the ADDIE research and development (R & D) design. The research procedure used was limited product design that had been validated. Data sources at the analysis stage of smartphone utilization needs and student needs for physics learning media are 60 high school students from several provinces. The Validation of the M-learning design was carried out by lecturer who were experts in physics education and physics teacher. Data on needs analysis and m-learning design validation were collected using a questionnaire and analyzed using descriptive quantitative. The results of the questionnaire were obtained 100% of the students who were respondents had an Android smartphone and only 68.3% of students had used an Android smartphone for learning. The results of expert validation and practitioners showed that the m-learning design suitable for magnetic learning supplements was interactive, could be used for independent learning, had learning objectives content, interactive modules, broadcast material, video and animation magnetic phenomena, experimental simulations, material summaries, hyperlinks to other learning sources, as well as interactive quizzes. Learning activities including study of teaching materials, experimental simulations, assignments, quizzes, discussion forums. Synchronous learning activities were carried out for discussion forums, asynchronous for others.
Physical module based on Higher Order Thinking Skill (HOTS) using 3D pageflip professional
Authors: Diana N , Latifah S , Gunawan I , Anggriani L
Published: July 2020

This study aims to develop a HOTS-based physics module using a professional 3D pageflip, knowing the opinions of experts on the feasibility of HOTS-based modules by using 3D pageflip professionals and to find out the responses of educators and students to HOTS physics modules. The results of this study are: HOTS-based physics modules using professional 3D pageflip that have been developed can be used at the SMA/MA level as teaching material. The final product that has been produced in the development of HOTS-based physics modules using 3D pageflip professionals has met very good criteria. Product exploration in HOTS-based physics modules uses for students in small group trials and field trials with very interesting criteria. With product trial response to educators against HOTS-based physics modules using 3D pageflip professionals with very good criteria. Based on these results, it can be obtained that teaching materials in the form of HOTS based physics modules are good and interesting to be used as physics teaching materials.
STEM literacy profile of junior high school students in Lampung Province, Indonesia
Authors: Ibrohim  , Abdurrahman  , Jalmo T
Published: July 2020

The 21st-century learning paradigm emphasizes the ability of students to think critically, be able to connect science with the real world, master information technology, communicate and collaborate so everyone must have critical thinking skills, knowledge and digital literacy skills, information literacy, media literacy, and master information technology and communication. This study aimed to describe the literacy profile of STEM (Science, Technology, Engineering, and Mathematics) on junior high school students in daily life. The study was conducted on junior high school students in Lampung Indonesia involving 167 students from 13 public and private schools. The method used in this study was a mixed-method with Sequential Explanatory Strategy. The research instrument used a questionnaire and interview guidelines. The results showed that junior high school students had used or implemented STEM (Science, Technology, Engineering, and Mathematics) in their daily lives even though sometimes they were not aware of it. The lack of practice in learning to use or apply the four STEM domains causes students to find it difficult to use or apply STEM in daily life. Therefore, the STEM approach needs to be maximized in learning especially science so that students can connect the knowledge obtained with reality in daily life.
The applications of InSAR technique for natural hazard detection in smart society
Authors: Jefriza  , Yusoff I M , Abir I A , Syahreza S , Rusdi M , Razi P , Lateh H
Published: July 2020

Synthetic Aperture Radar (SAR) is a potential application of remote sensing to geological and hydrometeorological hazards. This paper presents sustainability strategies for smart cities: the use of SAR Sentinel-1 for monitoring flood inundation and landslide hazards in Aceh Province, Indonesia. In this study, for flood detection, we attempt to uses Sentinel-1A (S-1A) in the same direction and acquisition through polarization of Vertical transmit and Vertical received (VV) – Vertical transmit and Horizontal received (VH) with a temporal baseline of 6 days. Those data were then analysed using the SNAP Toolbox. The results showed that the S-1A was successfully for detecting a flood inundation in which VH polarization is more sensitive than VV. For landslide monitoring, we apply multitemporal SAR images, where one of them is the Quasi-Persistent Scatterers (Q-PS) technique. Using ascending and descending orbit pass results in a better velocity map where both sides of the slope are detected due to the different sensor angle of both orbital passes. This technique has resulted in the undulating areas being monitored well and this will also fill the gap of layover and shadowing phenomena of the slant range SAR image. The Q-PS combinations were very effective to identify the deformation features associated with the land movement. For a smart city, natural hazards such as landslides and floods require continuous monitoring to ensure the potential as well as management and mitigation of natural hazards. Therefore, the InSAR technique is one of the effective ways for doing this strategy.
The development of multi-representation media based on instagram on temperature and heat materials
Authors: Jatmiko A , Mila M , Irwandani I , Anwar C , Taher A , Sari P M
Published: July 2020

This study aims to develop instagram based multi-representation media as an alternative to online learning, knowing the feasibility of Instagram-based multi-representation media as an alternative to online learning, Knowing the attractiveness of the Instagram-based multi-representation media as an alternative to online learning. This is a research and development type research. The instruments used in this study were questionnaires using the Likert Scale and non-test instrument data analysis using descriptive data analysis techniques. This study discovers that Instagram-based multi-representation media on temperature and heat material is appropriate to be used in the learning process, the feasibility of Instagram-based multi-representation media on temperature and heat material, according to experts, is highly feasible. This research proves that this Instagram-based learning media is effectively used as an alternative online learning media. As one of the evidences that in the 21st century online-based media is very needed and sought after by students, especially in high school students.
The effect of chemical commitments with exposure to gamma irradiation dosage and save time on test attraction and pullet limits of HDPE pack
Authors: Ratna I , Soenarto Y , Seputera H
Published: July 2020

This study aims to determine the effect of gamma irradiation doses and time of storage on the mechanical properties of HDPE packaging plastics, and to apply gamma irradiation techniques to improve the mechanical quality of materials, especially plastic-based products. Packaging plastic is the most popular packaging material used, many businesses choose plastic as packaging for their products Research Place for Polymer laboratories, Isotopes and Radiation Technology Application Centers, National Nuclear Energy Agency, Pasar Jumat, South Jakarta and Mechanical Test Laboratory of the faculty of Engineering, UHAMKA Pasar Rebo, East Jakarta. To determine the resistance of packaging plastic to gamma irradiation, the effect of gamma irradiation dosage and storage time on the mechanical properties of HDPE plastic packaging were carried out. The research will be conducted with Cobalt-60 gamma radiation sources at irradiation doses of 10, 15, 20, 25, and 30 kGy with a dose rate of 6 kGy / hour, then some irradiated plastic footage is stored at room temperature for 0 and 5 weeks. The mechanical properties tested were yield strength, tensile strength, and elongation at break using the strograph R1 tensile test tool. Gamma irradiation caused yield strength, tensile strength and elongation in the A brand HDPE packaging plastic increased from 0 to 5 kGy, then decreased by 5.31% at a dose of 10 kGy and then continued to increase to a dose of 25 kGy. The optimum increase occurred from doses 15 to 20 kGy, as much as 12.00%. For plastic B, the breakout extension (Eb) continues to increase as the irradiation dose increases to 30 kGy. The optimum Eb increase occurs from a dose of 0 to 5 kGy, at 9.80%. Increased mechanical properties are caused by free radical species formed during the irradiation process, so that a cross-bond is formed between HDPE plastic packaging molecules. While the decrease occurs due to the weakening of the cross bond between the HDPE packaging plastic molecules.
The effect site analysis based on microtremor data using the Horizontal to Vertical Spectral Ratio (HVSR) method in the Bandar Lampung City
Authors: Haerudin N , Rustadi  , Alami F , Yogi I B S
Published: July 2020

Bandar Lampung is the capital of Lampung Province which is crossed by faults, one of the faults that crosses Bandar Lampung namely the Panjang Fault or commonly called the Tarahan Fault, it is making the Bandar Lampung to be a potential earthquake area. Over the past 20 years many large earthquakes have rocked Indonesia, especially in the western part of Indonesia, such as Aceh, Nias, Padang, Bengkulu, Tasikmalaya, and Ciamis. Lampung Province is located near the subduction boundary of the Indo-Australian Plate against the Eurasian Plate, and also there is another fault, the Semangko Fault. Therefore, Lampung Province and especially Bandar Lampung have greater potential to the earthquake effect. The potential of this earthquake needs to be carried out by disaster mitigation activities to minimize the consequences that occur due to earthquakes, namely by classifying soil vulnerability by characterizing site effects. This study aims to determine the site effect based on dominant frequency parameters. The study was used 135 microtremor measurement points by using the Ref-Tek 130-SMHR strong motion accelerograph type (3 components). Microtremor data was analyzed using the Horizontal to Vertical Spectral Ratio (HVSR) method in Geopsy software. Based on the HVSR method, the Bandar Lampung City is dominated by soft soil types with a dominant frequency off0<1.33 Hz. It’s shows that Bandar Lampung City has a high vulnerability to earthquakes. Moreover, based on map analysis of the dominant frequency, the areas that have the highest risk are Kecamatan Panjang, Bumiwaras, Telukbetung Utara, Teluk Betung Selatan, Telukbetung Timur, Tanjungkarang Pusat, Tanjungkarang Barat, Rajabasa, Enggal, Langkapura, Kedamaian, Wayhalim, and Kedaton.
The prospective ethnopedagogy-integrated STEM learning approach: science teacher perceptions and experiences
Authors: Abdurrahman  , Ariyani F , Nurulsari N , Maulina H , Sukamto I
Published: July 2020

Regarding the 4.0 industrial revolution, the STEM dimension is very important. Separately, the facts related to the development of ethnoscience in Indonesia are also very closely related to the student learning environment. STEM can play a role as an ‘engaging tools’ in local wisdom-based learning. However, there is no ‘something’ to integrate these dimensions. In this case, this study is focused on developing a preliminary form of product. We design the working framework of ethno-pedagogy-integrated STEM learning approach based on science teacher perception and experience. This study was carried out using a mixed method with a survey and analysis document on science teacher learning tools. The survey results showed that the teacher had utilized several ethno potentials that have developed in the community. The results of the document analysis have resulted in the finding that most teachers did not have a pattern yet for applying STEM learning that was related to local wisdom in their society. The ethnoscience facts that existed in the community from the survey results that had a big local potential to be integrated into STEM learning, for example, could be seen from the many traditional buildings and dances (Physics) and traditional food (Bio-Chemistry).
Artificial intelligence technologies in automation of corporate risk management
Authors: Alchinov A I , Avetisyan K R , Druzhinina T Ya
Published: July 2020

This research focuses on the application of BD technologies and artificial intelligence, implemented in the convergence of neural network bases and open libraries (BigData). The proposed solution in the form of a distributed analysis system and automated corporate risk management is created on the basis of deep learning algorithms. It is effectively integrated into management processes. In addition, it improves the quality and time of decisions made at all levels.