bluuebunny/crossref_metadata_2025 huggingface dataset:
FLT3 Gene Mutation in Acute Myeloid Leukemia: Correlation with Hematological, Immunophenotypic, and Cytogenetic Characteristics
Authors: Shankaralingappa Sunitha , Joshi Hemangi D. , Patel Jayendra B. , Patel Prabhudas , Sawhney Jyoti
Published: June 2021

Introduction In acute myeloid leukemia (AML), FMS-like tyrosine kinase 3-internal tandem duplication (FLT3-ITD) is a common driver mutation associated with high tumor burden and poor prognosis. This mutation is common in normal karyotype AML and such patients have high leukocyte count. The presence of this mutation can be predicted by certain hematological and immunophenotypic characteristics in day-to-day practice.

Objective This study was undertaken to assess the strength of association between FLT3 gene mutation and hematological and immunophenotypic characteristics.

Materials and Methods Morphological, hematological, immunophenotypic, and cytogenetic characteristics of FLT3 mutations recorded in 424 patients of AML in adults and children between 2016 and 2019 in a tertiary care cancer center in Western India. Blasts were classified according to French-American-British method. Tumor burden was assessed by serum lactate dehydrogenase (LDH) levels, leucocyte count, and peripheral smear blast percentage.

Results Out of 424 cases, FLT3-ITD and FLT3-tyrosine kinase domain mutation were found in 72 and 25 AML patients, respectively. Patients with FLT3 mutation had high tumor burden, characterized by high leukocyte count (p < 0.001), peripheral blood (p = 0.01) and bone marrow (p = 0.03) blast percentage, and high serum LDH (mean 777.8 vs. 586; p = 0.10) compared with FLT3-negative patients. They also featured high platelet count (p < 0.001). Morphological, immunophenotypic, and cytogenetic characteristics also have been presented in the study.

Conclusion Observations of the study suggest the presence of definitive hematological and immunophenotypic characteristics along with raised serum LDH levels serve as surrogate markers and indicators of FLT3 mutation in AML patients.
Public engagement with health data governance: the role of visuality
Authors: Sleigh Joanna , Vayena Effy
Published: June 2021

Over the last years, public engagement has become a topic of scholarly and policy debate particularly in biomedicine, a field that increasingly centres around collecting, sharing and analysing personal data. However, the use of big data in biomedicine poses specific challenges related to gaining public support for health data usage in research and clinical settings. The improvement of public engagement practices in health data governance is widely recognised as critical to address this issue. Based on OECD guidance, public engagement serves to enhance transparency and accountability, and enable citizens to actively participate in shaping what affects their lives. For health research initiatives, this provides a way to cultivate cooperation and build public trust. Today, the exact formats of public engagement have evolved to include approaches (such as social media, events and websites) that exploit visualisation mediated by emerging information and communication technologies. Much scholarship acknowledges the advantages of visuality for public engagement, particularly in information-dense and digital contexts. However, little research has examined how health data governance actors utilise visuality to promote clarity, understandability and audience participation. Beyond simply acknowledging the diversity of possible formats, attention must also be paid to visualisations’ rhetorical capacity to convey arguments and ideas and motivate particular audiences in specific situations. This paper seeks to address this gap by analysing both the approaches and methods of argumentation used in two visual public engagement campaigns. Based on Gottweis’ analytical framework of argumentative performativity, this paper explores how two European public engagement facilitators construct contending narratives in efforts to make sense of and grapple with the challenges of health data sharing. Specifically, we analyse how their campaigns employ the three rhetorical elements logos, ethos and pathos, proposed by Gottweis to assess communicative practices, intermediated and embedded in symbolically rich social and cultural contexts. In doing so, we highlight how visual techniques of argumentation seek to bolster engagement but vary with rhetorical purposes, as while one points to health data sharing risks, the other focuses on benefits. Moreover, drawing on digital and visual anthropology, we reflect on how the digitalisation of communicative practices impacts visual power.
Ultrafast strain propagation and acoustic resonances in nanoscale bilayer systems
Authors: Bach N. , Schäfer S.
Published: June 2021

Ultrafast structural probing has greatly enhanced our understanding of the coupling of atomic motion to electronic and phononic degrees-of-freedom in quasi-bulk materials. In bi- and multilayer model systems, additionally, spatially inhomogeneous relaxation channels are accessible, often governed by pronounced interfacial couplings and local excitations in confined geometries. Here, we systematically explore the key dependencies of the low-frequency acoustic phonon spectrum in an elastically mismatched metal/semiconductor bilayer system optically excited by femtosecond laser pulses. We track the spatiotemporal strain wave propagation in the heterostructure employing a discrete numerical linear chain simulation and access acoustic wave reflections and interfacial couplings with a phonon mode description based on a continuum mechanics model. Due to the interplay of elastic properties and mass densities of the two materials, acoustic resonance frequencies of the heterostructure significantly differ from breathing modes in monolayer films. For large acoustic mismatch, the spatial localization of phonon eigenmodes is derived from analytical approximations and can be interpreted as harmonic oscillations in decoupled mechanical resonators.
The fundamental thermodynamic bounds on finite models
Authors: Garner Andrew J. P.
Published: June 2021

The minimum heat cost of computation is subject to bounds arising from Landauer’s principle. Here, I derive bounds on finite modeling—the production or anticipation of patterns (time-series data)—by devices that model the pattern in a piecewise manner and are equipped with a finite amount of memory. When producing a pattern, I show that the minimum dissipation is proportional to the information in the model’s memory about the pattern’s history that never manifests in the device’s future behavior and must be expunged from memory. I provide a general construction of a model that allows this dissipation to be reduced to zero. By also considering devices that consume or effect arbitrary changes on a pattern, I discuss how these finite models can form an information reservoir framework consistent with the second law of thermodynamics.
Determining interfacial resistance in thermoelectrochemical cells using transmission line measurement
Authors: Zhao Ziwen , Nandal Vikas , Shun Akiko , Jiang Lixian , Horike Shohei , Akaike Kouki , Mukaida Masakazu , Kirihara Kazuhiro , Seki Kazuhiko , Wei Qingshuo
Published: June 2021

Measuring and understanding the interfacial resistance between the electrode and electrolyte are critically important for fabricating high-performance thermoelectrochemical cells. Although the charge transfer resistance and other resistance, such as the mass transfer resistance, may measure via electrochemical impedance spectroscopy, the resolution of the charge transfer semicircle in the Cole–Cole plot can decrease if these resistance values are smaller than the solution resistances. Moreover, a small dataset at a very low frequency can affect the analysis results. In this study, the transmission line measurement was applied, which is used in semiconductor physics to determine the contact resistance between a metal and a semiconductor, to thermoelectrochemical cells for simultaneously determining the interfacial and solution resistances. This method was used to quantify the direct-current interfacial and solution resistances, which are directly linked to the power output of cells under different temperatures. Because of a wide applicable concentration range, the interfacial reaction rate constant at high electrolyte concentration could be calculated from the transmission line measurement. Through a comparison with electrochemical impedance spectroscopy results, we concluded that the interfacial resistance is dominated not by the charge transfer resistance but by the mass transfer resistance, which could be dependent on the surface energy of the electrodes.
Flash-welded ultraflat silver nanowire network for flexible organic light-emitting diode and triboelectric tactile sensor
Authors: Wang Hee Seung , Im Tae Hong , Kim Young Bin , Sung Sang Hyun , Min Seongwook , Park Sang Hyun , Lee Han Eol , Jeong Chang Kyu , Park Jung Hwan , Lee Keon Jae
Published: June 2021

Transparent flexible electrodes of metallic nanowire have been spotlighted to develop form factor free electronics for human-machine interfaces. However, state-of-the-art nanowire electrodes have been restricted for flexible application due to multi-stacked morphology with large protrusion and high surface roughness, which generate critical leakage current and device malfunction. Light-material interactions using board-wavelength flash lamps can be a solution for outstanding electrical and morphological properties by inducing a plasmonic welding of flexible metal nanowire. Herein, we propose flash-welded ultraflat electrode networks enabled by nanowire embedding to reduce the protrusion and surface roughness. The nanowire embedded in elastomer presented an ultra-smooth surface of Rq ~ 1.4 nm that prevents leakage current in ultrathin flexible electronics. The excellent electrical properties of ultraflat composite electrode were realized by xenon flash-induced junction welding of metal nanowire. The mechanical stability of flash-welded electrode was confirmed by sheet resistance value under cyclic bending test. Finally, ultraflat silver nanowire networks were utilized in practical application of a leakage current-free flexible optoelectronic device and a triboelectric tactile sensor.
Charge–spin conversion in Pt1−xBix alloys for spin–orbit torque switching
Authors: Chi Zhendong , Lau Yong-Chang , Kawaguchi Masashi , Hayashi Masamitsu
Published: June 2021

We have studied the spin torque efficiency of Pt1−xBix/Co based heterostructures for spin–orbit torque (SOT) switching devices. While the field-like component of the SOT shows a relatively small change with the Bi concentration (x), the damping-like component (ξDL) abruptly increases with increasing x. The increase in ξDL with x is largely associated with the change in the Pt1−xBix layer resistivity (ρxx). The spin Hall conductivity (σSH) estimated from ξDL and ρxx remains nearly constant at ∼830 (ℏ/e) Ω−1 cm−1 for 0 < x ≲ 0.6. Further substitution of Bi results in the formation of PtBi2, which causes smaller σSH than that of alloys with smaller x. The magnetic easy axis of a 0.6 nm thick Co layer points along the film normal when x is smaller than ∼0.7. Exploiting these characteristics, we show current-induced magnetization switching in the heterostructures. The efficiency to switch a perpendicularly magnetized Co layer is the largest when x ∼ 0.5. These results demonstrate the potential of Pt1−xBix alloys for spin–orbit torque magnetization switching devices.
Healthcare management applications based on triboelectric nanogenerators
Authors: Shabbir Irfan , Rubab Najaf , Kim Tae Whan , Kim Sang-Woo
Published: June 2021

In the current era of busy and eventful daily routines, the need for self-driven, robust, and low maintenance healthcare systems emerges significantly more than in earlier times. The nanogenerator (NG) technology provides a new pathway by utilizing nanostructured and eco-friendly materials toward biomedical systems by harvesting biomechanical energy. Triboelectric NGs (TENGs) have been well-developed to cater all these matters, giving self-powered, sustainable, environment-friendly, and low footprint devices. TENG comes up with great potential, therefore, we have summarized various dimensions of its applications in healthcare management, including prevention, detection, diagnosis, and treatment. We have reviewed different aspects of TENG healthcare systems that provide wearable, minimally invasive, and simple solutions while harvesting human motion as the power source. Here, recent advancements of triboelectric devices are compiled while discussing their significance, structure, capabilities, performance, and future potential. Meanwhile, the impact of TENG on protecting and treating various internal and external human organs, such as the heart, neural tissues, skin, and hair, has been described in detail. Moreover, TENG-based solutions have also included minimizing the effects of contemporary and lingering challenges such as air pollution and viral infectious diseases on human health. In the very end, we have concluded with the opportunities and possible solutions for anticipated challenges.
E3 ligase MKRN3 is a tumor suppressor regulating PABPC1 ubiquitination in non–small cell lung cancer
Authors: Li Ke , Zheng Xufen , Tang Hua , Zang Yuan-Sheng , Zeng Chunling , Liu Xiaoxiao , Shen Yanying , Pang Yuzhi , Wang Simin , Xie Feifei , Lu Xiaojing , Luo Yuxiang , Li Zhang , Bi Wenbo , Jia Xiaona , Huang Tao , Wei Rongqiang , Huang Kenan , Chen Zihao , Zhu Qingchen , He Yi , Zhang Miaoying , Gu Zhizhan , Xiao Yichuan , Zhang Xiaoyang , Fletcher Jonathan A. , Wang Yuexiang
Published: June 2021

Central precocious puberty (CPP), largely caused by germline mutations in the MKRN3 gene, has been epidemiologically linked to cancers. MKRN3 is frequently mutated in non–small cell lung cancers (NSCLCs) with five cohorts. Genomic MKRN3 aberrations are significantly enriched in NSCLC samples harboring oncogenic KRAS mutations. Low MKRN3 expression levels correlate with poor patient survival. Reconstitution of MKRN3 in MKRN3-inactivated NSCLC cells directly abrogates in vitro and in vivo tumor growth and proliferation. MKRN3 knockout mice are susceptible to urethane-induced lung cancer, and lung cell–specific knockout of endogenous MKRN3 accelerates NSCLC tumorigenesis in vivo. A mass spectrometry–based proteomics screen identified PABPC1 as a major substrate for MKRN3. The tumor suppressor function of MKRN3 is dependent on its E3 ligase activity, and MKRN3 missense mutations identified in patients substantially compromise MKRN3-mediated PABPC1 ubiquitination. Furthermore, MKRN3 modulates cell proliferation through PABPC1 nonproteolytic ubiquitination and subsequently, PABPC1-mediated global protein synthesis. Our integrated approaches demonstrate that the CPP-associated gene MKRN3 is a tumor suppressor.
Femtosecond XUV–IR induced photodynamics in the methyl iodide cation
Authors: Murillo-Sánchez Marta L , Reitsma Geert , Poullain Sonia Marggi , Fernández-Milán Pedro , González-Vázquez Jesús , de Nalda Rebeca , Martín Fernando , Vrakking Marc J J , Kornilov Oleg , Bañares Luis
Published: June 2021

The time-resolved photodynamics of the methyl iodide cation (CH3I+) are investigated by means of femtosecond XUV–IR pump–probe spectroscopy. A time-delay-compensated XUV monochromator is employed to isolate a specific harmonic, the 9th harmonic of the fundamental 800 nm (13.95 eV, 88.89 nm), which is used as a pump pulse to prepare the cation in several electronic states. A time-delayed IR probe pulse is used to probe the dissociative dynamics on the first excited

A

̃

A

1

2

state potential energy surface. Photoelectrons and photofragment ions—

C
H

3

+

and I+—are detected by velocity map imaging. The experimental results are complemented with high level ab initio calculations for the potential energy curves of the electronic states of CH3I+ as well as with full dimension on-the-fly trajectory calculations on the first electronically excited state

A

̃

A

1

2

, considering the presence of the IR pulse. The

C
H

3

+

and I+ pump–probe transients reflect the role of the IR pulse in controlling the photodynamics of CH3I+ in the

A

̃

A

1

2

state, mainly through the coupling to the ground state

X

̃

E

3
/
2
,
1
/
2

2

and to the excited

B

̃

E

2

state manifold. Oscillatory features are observed and attributed to a vibrational wave packet prepared in the

A

̃

A

1

2

state. The IR probe pulse induces a coupling between electronic states leading to a slow depletion of

C
H

3

+

fragments after the cation is transferred to the ground

X

̃

E

3
/
2
,
1
/
2

2

states and an enhancement of I+ fragments by absorption of IR photons yielding dissociative photoionization.
Probing top-philic new physics via four-top-quark production *
Authors: Cao Qing-Hong , Fu Jun-Ning , Liu Yandong , Wang Xiao-Hu , Zhang Rui
Published: June 2021

We explore constraints on various new physics resonances from four top-quark production based on current experimental data. Both light and heavy resonances are studied in this work. A comparison of the full width effect and narrow width approximation is also presented.
Note on gauge invariance of second order cosmological perturbations *
Authors: Chang Zhe , Wang Sai , Zhu Qing-Hua
Published: June 2021

We study the gauge invariant cosmological perturbations up to the second order. We demonstrate that there are infinite families of gauge invariant variables at both the first and second orders. The conversion formulae among different families are verified to be described by a finite number of bases that are gauge invariant. For the second order cosmological perturbations induced by the first order scalar perturbations, we explicitly represent their equations of motion in terms of the gauge invariant Newtonian, synchronous and hybrid variables, respectively.
Use of basil leaf ethanol extract in alginate base edible film
Authors: Giyatmi Giyatmi , Irianto Hari Eko , Anggoro Bintang , Nurhayati  , Fransiska Dina
Published: June 2021

Alginate is usually obtained by extracting from brown seaweed, mainly Sargassum sp which grows almost along the coasts of the islands in Indonesia. One of the efforts to utilize alginate was by employing as raw material in the production of edible film. The disadvantage of films made from carbohydrates is that they are not very good at regulating water vapor migration. One way to improve performance of edible film in inhibiting water vapor transmission is to add vegetable oil. In this study, the effect of adding basil leaf ethanol extract was observed to improve the performance of alginate-based edible film. Basil leaf extract was added at concentrations of 0.5%, 1% and 1.5%. The resulting edible films were observed for chemical characteristics (moisture content), physical characteristics (thickness, tensile strength, water vapor transmission rate, elongation, brightness, solubility) and antibacterial performance. The results showed that the concentration of basil leaf extract had a significant effect on moisture content, thickness, tensile strength, water vapor transmission rate (WVTR), and elongation values. Edible films do not have antibacterial activity against Staphylococcus aureus and Escherichia coli. The addition of basil leaf extract at a higher concentration resulted in an alginate-based edible film with lower moisture content, higher water solubility, higher thickness, higher tensile strength, lower WVTR, and lower elongation percentage.
Development of application Information System in Rhee District
Authors: Esabella Shinta , Intan Hikmawati , Hidayatullah Muhammad , Andriani Titi , Gunawan G
Published: June 2021

Management of patient data at the Technical Implementation Unit of the Community Health Center (UPT. Puskesmas) of Rhee Sumbawa District has not been fully computerized. The need for the development of an Information System to store medical records (history) of patient data. The research aims to develop information systems with descriptive research methods. For software development methods using Waterfall Models and built with Microsoft Visual Studio C# software and databases stored in Microsoft SQL Server software. Software testing uses Black Box Testing, which is testing software in functional terms. The results of research into digital data technology products that function to enter, change, delete data and minimize the time to find the data needed to improve the effectiveness and efficiency of data management.
Mobile Application Puzzle and Its’ Effect to the Learners Learning Outcomes in Earth Science
Authors: Gumbao Rizza S.
Published: June 2021

This study aimed to determine the performance, attitude and interactivity of Grade 11 High School learners in Earth Science before and after the Jigsaw Puzzle Mobile App when utilized as instructional material. This also gathered data on the effect of Jigsaw Puzzle Mobile App and reflections of the respondents. It was conducted at Fisheries and Marine Science High School, Iloilo State College of Fisheries Main Tiwi Campus from August to October 2018. Fifty-two (52) purposively chosen grade 11 learners were the respondents of the study. The quasi-experimental research design was used. Data were gathered using the test, guide questions, attitudinal and reflection. Data were analyzed using the mean and t-test. The result showed that there was an improvement in the performance of the learners as a whole based on their pre-test and post-test scores. The attitude of the learners before the conduct of the study as a whole, as to sex and as to track was “positive” respectively but after the study male and according to the track was “very positive” respectively while a female has “positive” attitude. The interactivity of the learners as a whole was “average”, according to sex and track respectively except STEM with “high interactivity”. There was a highly significant difference in the performance and the attitude of the learners before and after the jigsaw puzzle mobile app was introduced. The presence of the jigsaw puzzle mobile app in the classroom was found to be useful, enjoyable and challenging. This also let the learners develop their sense of deep concentration, critical thinking skills and psychomotor coordination.
Implementation Fuzzy Logic in System Design for Predicting the Production of Songkets in West Sumatera
Authors: Kartika Devia , Gema Rima Liana
Published: June 2021

Fuzzy logic is widely applied in various fields, such as industry, communications, etc. Fuzzy logic was developed to solve an obscure problem. The problem that arises in the production at UMKM Songket Silungkang and Songket Pandai Sikek at this time is that there is no system used as a reference in predict the amount of production that will come. Where this method can utilize demand and supply data in the past which is then processed with fuzzy stages so as to produce production figures. The government has prioritized the development of the Silungkang songket handicraft business, which is a regional specialty, in order to enter the export market. In the early stages, the priority of the regional government was to increase the production of craftsmen by facilitating coaching for micro, small and medium enterprises (MSMEs), especially those engaged in songket crafts, to continue to be developed by increasing quality and creativity. By applying the Fuzzy Inference System method in predicting the production of Songket Silungkang Kota Sawahlunto and Songket Pandai Sikek, Agam City can help several parties such as the government, micro, small and medium enterprises in making efforts to handle and make good decisions towards increasing the production of Songket UMKM in each region. and can provide a comparison of the predicted results of production for the coming period so that it can produce the optimal number of songket based on market demand.
Analysis of the effect of the lecturer satisfaction with the Naive Bayes Data Mining technique on institutional performance
Authors: Aisyah Siti , Marpaung Preddy , Aprinai Wiwin , Saharja Komda , Suryawan I Made Yuda , Nugroho Bekti Tufiq Ari , Nurbaedi Amin , Hasibuan Hasrul Azwar , Nadeak Bernadetha , Tohir Ahmad
Published: June 2021

The study aimed to analyze the effect on institutional performance of lecturer satisfaction with data extraction techniques. The solution is the technique of Naive Bayes, where data is obtained through interviews and questionnaires conducted in one of the private institutions in the north-sumatra of Medan. The evaluation criteria are readiness, compassion, reliability and accountability. The tests indicate that the level of accuracy is 85.48% with 81.08% precision, and 93.75% recall value. The Naïve Bayes method can also be recommended to predict the degree of satisfaction of the lecturer with institutional performance based on the results of tests using fast miner software.
Comparison of machine learning algorithms for chest X-ray image COVID-19 classification
Authors: Samsir Samsir , Sitorus Jimmi Hendrik P. , Zulkifli  , Ritonga Zuriani , Nasution Fitri Aini , Watrianthos Ronal
Published: June 2021

Artificial Intelligence and Machine Learning algorithms were used to identify the coronavirus (COVID-19) from X-ray photos of the chest. The authors propose a model for early coronavirus detection based on image filtering strategies and a hybrid feature selection model in this analysis. Traditional statistical and machine learning methods are used to derive these attributes from CT images. The Confusion Matrix for infected COVID-19 patients and regular patients was obtained using Support Vector Machine and K-Nearest Neighbor to classify the features chosen. The output of the two approaches can be compared. The various techniques’ performance shows that the Support Vector Machine achieves the highest precision of 97% compared to the K-Nearest Neighbor with a precision of 86%.
A Performance Comparison of RESTful Applications Implemented in Spring Boot Java and MS.NET Core
Authors: Dhalla Hardeep Kaur
Published: June 2021

RESTful is an emergent architectural style to develop web services/applications due to its lightweight nature. Though more and more organizations are adopting RESTful services, when it comes to choosing the right platform to implement one, teams usually gravitate towards reusing the existing skillset and prefer the platform that they currently support instead of looking for a better performing alternative. Considering that internal architecture and implementation of each platform can drastically affect its efficiency and performance, the objective of this research paper is to assess and compare the performance of RESTful web applications implemented in Spring Boot Java and MS.NET Core. An identical business use case to provide the basic four Create, Read, Update, and Delete (CRUD) operations was developed in both implementations. Apache JMeter 5.2.1, an automated performance testing tool is used in this experiment to create a swamp of concurrent virtual users to load both the applications at regular intervals. The comprehensive experimental results are presented at the end of the research paper.
Bibliometric Analysis on Governance Index Topics Using Scopus Database and Vosviewer
Authors: Nurdin Bartoven Vivit , Hutagalung Simon Sumanjoyo , Yulianto  , Kurniawan Robi Cahyadi , Hermawan Dedy
Published: June 2021

This article aims to re-identify government management performance appraisal indicators/index by highlighting publications in public libraries from years 2005 to 2020. The research used Scopus citation database over 15 years to collect articles. The keywords used in this study is “good governance” and “governance index” with english document filter. Simple statistical methods were used, and a bibliometric analysis was conducted using VOS-viewer software. This study visualized patterns of the co-occurrence of keywords, citations of documents, and primary keywords mapping. The study revealed trend in the analysis of governance measurement is increased significantly from 15 years ago. In the origin aspect of the country that conducts the publication dominated by developed countries and some of the developing countries. Based on the network visualization is seen a large cluster that hosts the concept of governance index known that the dominant economic aspect as the background of its presence, then there are also keywords related to the role of government and concepts in the organization. Many government performance index are conducted qualitatively or quantitatively, but no one has used the bibliometric method to re-identify the keywords that are consistent with the development of the concept of government performance itself.
Online Student Attendance System Using Android
Authors: Munthe Bangun , Herman  , Arifin Ardian , Nugroho Budi Sulistyo , Fitriani Elies
Published: June 2021

The purpose of this research is to design a database system implemented on an academic management android application that will be utilized to support the academic management information system for the advancement of institutions and education systems. The method in this study is to perform a design consisting of a proposed design to be implemented in applications such as online study materials, notifications, academic calendars and online reminder checks, online attendance records, performance records, and parent intimacy systems using Android applications. The system helps teachers to attend via smartphone and keep student records for their progressive assessments. The system provides prior intimacy to students as soon as their attendance is below the attendance threshold specified in the form of SMS. The result of this study is an android-based student attendance management application at an Educational institution.
Characteristic Parameters of Epoch Deep Learning to Predict Covid-19 Data in Indonesia
Authors: Hastomo Widi , Bayangkari Karno Adhitio Satyo , Kalbuana Nawang , Meiriki Andri , Sutarno
Published: June 2021

This study aims to predict Covid-19 data in Indonesia using LSTM machines learning and GRU using python. As a comparison, two datasets from other countries which have strong correlation were used. The dataset is of the ourworldindata.org page. The results of the LSTM model with epoch 15, RMSE 68,417 require rapid processing time and better accuracy than GRU with epoch 400, RMSE 90,173. The results from Covid-19 data processing in Indonesia have a robust correlation with Covid-19 data in Azerbaijan, Bangladesh, Bhutan, Cape Verde, Curacao, Slovenia, South Africa, and Thailand. The epoch characteristics of LSTM and GRU are a challenge since the amount of Covid-19 data is relatively minor.
Integration of AHP-MOORA Algorithm in Green Supplier Selection in the Indonesian Textile Industry
Authors: Utama Dana Marsetiya , Asrofi Mochammad Samsul , Amallynda Ikhlasul
Published: June 2021

In selecting suppliers, one approach that can be used to solve this problem is Multi-Criteria Decision Making (MCDM). MCDM involves several criteria with both quantitative and qualitative assessments. This research attempts to solve the Green Supplier Selection (GSS) problem by using the integration of Analytical Hierarchy Process (AHP) and Multi-Objective Optimization On The Basis Of Ratio Analysis (MOORA). AHP is used as the weighting of the GSS criteria and sub-criteria. Furthermore, MOORA is used to rank the best suppliers. This research was conducted in the textile industry in Indonesia. Eight criteria and 15 sub-criteria GSS are used to select eight suppliers. The results show that the product price has the most excellent weight in supplier selection. In addition, the AHP-MOORA method can be used in solving GSS problems.
Spatial Reasoning Profile of The Students with Good Number Sense Ability
Authors: Wulandari N P , Ekowati D W , Novitasari D , Hamdani D , Gunawan G
Published: June 2021

Mathematics teacher must have a good basic mathematics comprehension such as number sense and spatial reasoning before teach it to the students. Those ability will help a person to solve mathematical problems effectively. The aim of this study is to describe how number sense and spatial reasoning was used to solve mathematical problems. This research is a qualitative-descriptive research with 27 of second year pre-service mathematics teachers as a participant. Subject were selected using purposive sampling by conducting number sense ability test. The one with good number senses abilities were given advanced test related to spatial reasoning. The result of this research shows that pre-service mathematics teacher with good number sense ability can solve the given problems correctly. Subjects can flexibly conduct mental calculation, mathematical computation, and create various number representation accurately and are able to create efficient problem-solving strategy by combining mental rotation and spatial visualization within the process.
Conventional Switching to Drive A Brush DC Geared Servomotor
Authors: Syafruddin R , Anung  , Muntiyono  , Lestari Ninik Sri , Afiyah Salamatul , Hidayat Rahmad , Mahardika Andrew Ghea
Published: June 2021

Conventional switching can be used to drive a brush dc geared servomotor, in terms of adjusting the position to our liking. For brush geared dc servomotor drivers we use a switching bridge where each arm is used a power transistor, in the process of switching bridge need to be considered the area where the short circuit is likely to occur, to avoid it we use dead time, as well as the possibility of a short circuit due to the upper arm and the lower arm of the bridge turns on at the same time for that it is necessary to make a transistor-transistor logic circuit so that the upper arm will not turn on when the lower arm is on or vice versa. From the results of conventional switching, it is able to drive the DC brush geared servomotor to the desired position.
Development of a Cooling System Simulation Model using Thermoelectric Peltier based on Microcontroller
Authors: Ramady Givy Devira , Lestari Ninik Sri , Fadriani Hetty , Sufyani Rosyidin , Mahardika Andrew Ghea , Hidayat Rahmad , Hermawaty
Published: June 2021

The development of technology can be seen from the increasing number of industries that are standing and especially industries that produce air-conditioning machines such as Air Conditioner (AC), Air Cooler and Chiller. As the name implies, AC has a function to condition the air in a room so that it feels cool, comfortable, and healthy. In operation, AC requires electricity, and almost all of its main components require electricity so that the cost of using flow electricity is the benchmark in efforts to save energy. At the tool and system design stage, an overall tool design is carried out to form a miniature air-conditioning system using a Peltier Thermoelectric. The purpose of designing this tool is to produce a tool that functions to cool a room, so that the temperature in the room is cool and maintained, with the performance of Peltier TEC1-12706 and also heatsink as a channel for cold air through fans indoor and outdoor, and displaying temperature. In testing the system there is a slight difference from the measurements of the results with the component datasheet. On the results of the power test on the 12 V.10A adapter without load, the average output is 12.11 V, not pure at 12 V because the voltage displayed on the AVO meter has an average difference of 0.92%. Whereas in the measurement of power by load, that is, with an average load of 12.05V because the voltage displayed on the AVO meter has a difference and the voltage already has a load and has an average error of 0.41%. The existence of this error is because the current entering the adapter is also unstable.
Analysis on the Motorcycle-Exclusive Lane Implementation for the Urban Arterial Road in Banda Aceh City
Authors: Siregar A R V , Sugiarto S , Izziah
Published: June 2021

A motorcycle-exclusive lane was implemented since 2015 at busiest urban arterial road in the city center of Banda Aceh. However, this policy seen to be ineffective as indicated by the low obedience by the motorcycle users. This study was, therefore, conducted to analyze the determinant of the implementation of motorcycle-exclusive lane. This involved infrastructure observation and road user direct interview through questionnaires survey. Target respondent was motorcyclist who used motorcycle-exclusive lane within the study area. A total volume of these users was observed to be 364 vehicles/day and drawn the sample as much as 170 samples were selected for data analysis using the Principal Component Analysis (PCA). The PCA found that the main factors influencing the implementation of the motorcycle-exclusive lanes include the sign, lane support, motorbike, and speed factors with each having its significant explanatory level. Finding depict that greatest factor had 26.419% variant of Factor 1 with technical improvement delivers to aspect of motorcycle-exclusive lanes must have traffic signs showing the entry and exit locations of motorbikes, must have motorcycle-exclusive lanes with information prohibiting the motorbikes from stopping, and motorcycle-exclusive lane signs must install in the needed place and easily visible to users.
Monitoring System IoT-Broiler Chicken Cage Effectiveness of Seeing Reactions from Chickens
Authors: Nalendra Adimas Ketut , Priyawaspada Heri , Nur Fuad M. , Mujiono M. , Wahyudi Dona
Published: June 2021

Broilers are an excellent source of protein and are needed in the productive age population. From the central statistics data in 2019, the number of broiler populations in Indonesia reached 3.15 billion heads. To maximize production and reduce production efficiency, artificial intelligent application innovations are carried out for temperature, humidity, and gas control in broiler chicken coops. Internet of Things helps farmers make efficient use of human resources to adjust the temperature and humidity of the cage. The microcontroller’s primary device uses a wifi-embedded ESP32 to be able to transmit data to the server. To read the environmental conditions of the cell, use DHT11 for temperature and MQ2 for gas. The results of the system’s application were tested using two models, namely, testing the sensor reading value compared to the weight on the Thermo hygrometer and observation of the reaction of chickens in the cage. The test results were conducted by comparing the sensor’s value with Thermo hygrometer difference can be tolerated and normal chicken reaction because the temperature in the enclosure is well maintained.
Signal Processing of Filter Bank Multi Carrier for 5G
Authors: Hidayat Rahmad , Lestari Ninik Sri , Mahardika Andrew Ghea , Fadriani Hetty , Muntiyono  , Herawati  , Nuryono Budi
Published: June 2021

The spectrum efficiency in fourth-generation (4G) i.e. orthogonal frequency division multiplxing (OFDM) systems has become a major problem at this time due to the increasing need for communication bandwidth. This efficiency is reduced due to the high out-of-band emission (OoBE) that exist. As one of the candidates that still has the potential to be used in the fifth generation (5G) signal modulation method, this paper aims to make observations by out of band emission simulation on a multi carrier filter bank (FBMC). This paper illustrated facets of the 5G with FBMC modulation scheme. To illustrate it, 24 sub-carriers were simulated with each sub-carrier spaced 15 kHz, later the power spectral density of the FBMC signal is plotted. The MATLAB simulation results with the 256-QAM order indicated that FBMC is more advantageous than OFDM because it offers higher spectral efficiency with a difference of 130 dBW/Hz. In other words, this system offers low out of band emission. Previously, an illustration of the FBMC prototype was also shown.
Understanding Degradation Attack and TCP Performance in Next Generation Passive Optical Network
Authors: Atan F.M. , Zulkifli N. , Idrus S.M. , Ismail N.A. , Zin A.M.
Published: June 2021

The next-generation gigabit passive optical network (NG-PON) is a promising solution for network growth and expansion. The NG-PON aims to connect more users as fiber’s deployment to the home (FTTH) initiative takes place. The network needs urgent attention to its security establishment, which is currently exposed to a degradation attack. During the attack, already available TCP congestion control is invoked to handle collision. The interconnection of TCP in the transport layer and attack in the MAC layer is investigated. During the attack, a reduction of 63% of total throughput is detected. A variation of the number of ONU also determines the competing nature of TCP, which inherently reduces the maximum throughput of 4%.
Saving of Using Electrical Energy of Induction Motor Through Regulations of Minimum Operating Voltage
Authors: Liklikwatil Yakob , Syafruddin  , Agustina Ellisa , Lestari Ninik Sri , Herawati YS , Mahardika Andrew Ghea , Afiyah Salamatul
Published: June 2021

Many devices use an induction-type electric motor as the prime mover, such as an electric drilling machine, cutting machine, cement mixer/sand, and various kinds of machinery contained in industrial textiles, automotive industry, and others. The use of machines is closely related to the application of electric motors that will essentially consume electricity vary depending upon the size of the motors that. And generally, this equipment always operates at a nominal price of electrical voltage or full voltage of 220 volts for example per phase or 380-volt three-phase. In this condition, when the motor is not fully loaded suppose half of its full load, it would be a waste of electrical energy consumption, especially if the motor is not given mechanical load on its axis. Therefore, this paper gives a little solution in saving electrical energy consumption of the motor. Two important things are studied in this paper regarding the working arrangements, namely the motor on the state of the start and on the state of the running.
Van Hiele Levels: Errors in Solving Geometry Problems from Mathematical Disposition
Authors: Miatun Asih , Khusna Hikmatul , Slamet
Published: June 2021

The purpose of this study is to analyze student errors based on van Hiele’s level of understanding in solving geometric problems in terms of mathematical dispositions. This research is considered important as it can reveal mistakes often made by students based on van hiele levels. There are 5 levels contained in van hiele levels, namely level I-visualization, level II-analysis, level III-ordering, level IV-deduction, and level V-rigor. This research is a qualitative descriptive study. Subjects in this study were selected based on high, medium, low mathematical disposition abilities. This research shows that students with high mathematical disposition in solving geometric problems reach level IV-deduction. Students with moderate dispositions are able to reach level II-analysis and make mistakes at level III-ordering. Furthermore, students with low mathematical disposition only reach level I-visualization and make errors at level II-analysis.
Validity and Reliability Analysis of Algebraic Reasoning Test Instrument
Authors: Faradillah Ayu , Jusra Hella , Pradipta Trisna Roy
Published: June 2021

This study aims to analyze the validity and reliability of the algebraic reasoning question instrument. The total number of questions in this study were 8 questions which were done by 107 junior high school students in Indonesia. Based on the results of the analysis using the Rasch model, it was found that the instrument had Cronbach’s alpha (KR-20) in the medium category, the item reliability was excellent, and the person reliability was in the low category. This shows that the instrument is a very reliable instrument for assessing students’ algebraic reasoning but students were unable to solve them well. Meanwhile, the results of the validity found that Q8 was not the fit criteria for MNSQ Outfit, ZSTD Outfit, and PTMEA-CORR. As for person fit, only six students showed a misfit, which indicated that other students gave a meaningful response to Rasch’s analysis.
ICT Competence, Organizational Culture, Motivation, and Task Performance among the Employees of One Polytechnic University Branch
Authors: Avila Ernie C. , Cabrera Honorato I.
Published: June 2021

This study identified the ICT Competence, Organizational Culture, Motivation, and Task Performance among the Employees of Polytechnic University of the Philippines-Ragay, Camarines Sur Branch. Descriptive-survey was conducted for the 38 employees of the said university branch for the Second Semester of Academic Year 2019-2020. It was revealed that The employees’ competence in using ICT resources in a higher education institution is within Skillful to Much Skillful levels. It Often Observed the different components of Organizational Culture as they are Often Motivated and Often performed in their organization. Considering that the ICT competence of the employees is affected by the availability of the ICT resources in the institution and their exposure to the ICT resources. It is also recommended for the higher authority of the university and the Commission on Higher Education to prioritize the procurement of relevant resources, equipment, and facilities related to ICT integration in Higher Education Institutions, and training and skills empowerment of staff of the organization should be regularly conducted.
The Use of Electronic Learning Aid (Elena); It’s Impact on Student Satisfaction
Authors: Nurkhin Ahmad , Aeni Ida Nur , Baswara Satsya Yoga , Widiatami Anna Kania , Harsono
Published: June 2021

This research aims to describe the use of Electronic Learning Aid (ELENA) at the Universitas Negeri Semarang (UNNES) as an online learning platform during the Covid-19 pandemic. It also explains the effect of using ELENA on the students’ satisfaction. The research objects are the lecturers and the students of the Economic Education study program, Faculty of Economics of UNNES. The data are collected using documentation and questionnaire methods. The data are then analyzed using descriptive statistics. The results show that the lecturers have made good use of ELENA as an online learning platform. They can operate some features available in ELENA (attendance, files, assignments, quizzes, links, labels, discussions, video conferencing) well. The students also think that their lecturers have sufficient competence in utilizing ELENA. Their satisfaction level is in a good category. However, they also suggest some other learning activities that the lecturers can conduct by utilizing other applications besides ELENA.
Augmented reality as a part of STEM lessons
Authors: Midak L Ya , Kravets I V , Kuzyshyn O V , Baziuk L V , Buzhdyhan Kh V , Pahomov Ju D
Published: June 2021

Modern teachers and the managers of educational establishments have big challenge – to organize the lectures and the study process so that the students are provided with the necessary skills and to meet their educational needs, as well as their parents’ expectations. An integrated lesson that is developed with a synthesis of information on different educational subjects stimulates the students’ analytic thinking, which in exchange boosts the integral perception of the reality. That is why STEM lessons are becoming more and more popular among the educators, as far as the specifics of this approach can really solve a lot of tasks. Modern IT-developments are an appropriate T – component during STEM lessons and while developing STEM projects. One of these up-to-date trends is called Augmented Reality (AR), which allows visualizing the study material and improves its reception and memorizing. The purpose of the research is development of a mobile app (on Android) for STEM lessons, designed for visualization of the chemical structure of organic, biologically active substances, which can be used by the teacher and students in order to carry out integrated lessons of biochemical area; revealing key specifics of using STEM technologies while studying natural sciences.