bluuebunny/crossref_metadata_2025_split huggingface dataset:
Knowledge, Awareness, and Resilience of Earthquake and Tsunami Disaster Risk Reduction in Coastal Area
Authors: Retno Susilorini Rr M I , Febrina Rina , Fitra Helmia Adita , Rajagukguk Juniastel , Wardhani Dhiyan Krishna , Arya Wastanimpuna B Y , Nola Prameswari Laurel Lia 
Published: March 2021

Abstract
Indonesia is earthquake and tsunami prone areas, included Sumatera Island. Bandar Lampung is also vulnerable to earthquake and tsunami, especially Kangkung fishing village in Lampung Bay. Disaster risk reduction is very important to be implemented in the cases of earthquake and tsunami, which can save more life and build resilience in facing the hazard. This research aimed to study how the knowledge, awareness, and resilience of people in Kangkung fishing village can strengthen the earthquake and tsunami disaster risk reduction. This research conducted by quantitative methods. Survey and interview of 53 respondents were conducted as well as data collecting approached by purposive sampling. The results found that there is little knowledge and awareness of people in Kangkung fishing village of the hazard of earthquake and tsunami. Therefore, this research proposed a model of “Community-Based Resilience Strategy” Model of earthquake and tsunami disaster risk reduction. It is a comprehensive and sustainable model of how people take a part in disaster risk reduction by intensive participatory. Conclusion of this research emphasized that disaster risk reduction is a big matter in marginalized society such as people in Kangkung fishing village. The “Community-Based Resilience Strategy” Model of earthquake and tsunami disaster risk reduction that may increase the knowledge and awareness to become more resilience.
Alert and Response of Earthquake and Tsunami for Community Based Disaster Risk Reduction
Authors: Retno Susilorini Rr M I , Pamudji Andre Kurniawan , Sanjaya Ridwan , Ismail Amrizarois , Amasto Ardhito Hayyu 
Published: March 2021

Abstract
Indonesia had been suffered by earthquake and tsunami for many centuries. Since many lives have taken by tsunami strikes, alert and response system are very important as important part of Disaster Risk Reduction, especially in area with high population density. This research conducted in Kangkung fishing village in Bandar Lampung coastal area which is an earthquake and tsunami prone area. The aim of the research is to study alert and response of Community Based Disaster Risk Reduction. The research conducted by qualitative method and purposive-descriptive approach. There were 53 respondents which participated in the survey and interview. It is reported that “Smart Resilient City” model suitable for community needs of alert and response of earthquake and tsunami disaster. This research meets conclusion that “Smart Resilient City” model may become a great solution in Community Based Disaster Risk Reduction to cope with the hazard of earthquake and tsunami comprehensively and sustainably.
Modeling of Spin-Polarized Currents in Zinc Blende-based Magnetic Tunnel Junctions Featuring the Dresselhaus Effect
Authors: Noor F A , Mardianti H , Khairurrijal  
Published: March 2021

Abstract
In this study, the spin-polarized currents in a magnetic tunnel junction (MTJ) with a Fe/GaAs/Fe structure were calculated by considering the Dresselhaus effect. The spin-polarized current was calculated using the Airy wavefunction approach and then compared to the transfer matrix method (TMM) to check the accuracy. It was shown that the total spin-polarized current density evaluated via the Airy-wavefunction approach matches that obtained with the TMM. It was also shown that the current density increases as the barrier width decreases. In addition, the temperature and the incident angle of the electrons affect the current density, where the maximum current density is obtained when the electrons come in a direction perpendicular to the barrier. We herein determined analytically that a high device performance of the MTJ could be achieved by simply controlling the device parameters of barrier width, temperature and incident angle of the electron.
Development of Exercise Program Application
Authors: Ibrahim  , Mesnan  , Manik Syahputra 
Published: March 2021

Abstract
The purpose of this research is to create a sports training program application so that it can make it easier for sports coaches to create a structured and systematic exercise program. In addition, this application is also a student media to improve skills in making and planning sports training programs, so that FIK UNIMED graduates can compete in the world of coaching, especially in North Sumatra. The research method used is research and development (R & D) with a development research design proposed by; Borg and Gall. The instruments used in this research and development is form review the experts (expert judgment). The resulting application in this study is named “SIPRENPOL”. This application can be accessed through the page http://siprenpol.ilmukeolahragaan.com. Validation from material experts shows the results of the assessment of 81% and 87% which means that the application development is feasible. Validation from material experts showed the results of the assessment were 77% and 83%, which means it is feasible. The results of the research on the development of exercise program application is feasible to be used as a means to make it easier for trainers to create and compile training programs.
Bandgap control in ZnO with Na and Cl adatom: DFT Calculations
Authors: Pamungkas Mauludi Ariesto , Irwansyah  , Putra Setiawan Ade , Abdurrouf  , Nurhuda Muhammad 
Published: March 2021

Abstract
The Zinc oxide is well known as a direct wide bandgap semiconductor material with many promising properties for blue/UV optoelectronics, transparent electronics, spintronic devices and sensor applications. Controllable bandgap tuning is important to widen its possible applications. In the present work, we applied density functional theory to study bandgap tuning of ZnO by introducing Na atom and Cl atom. Sodium acts as p-type doping, while chlorine acts as n-type doping for ZnO. The effect of Na and Cl doping in the study was calculated using the Density Functional Theory (DFT) method. The results indicate that ZnO, which is a natural n type semiconductor when doped with p type, has an increase in bandgap, on the contrary, doping with n type decreased its bandgap
Renewable and environmentally friendly of “red shoots” leaves biomass-based carbon electrode materials for supercapacitor energy storage
Authors: Taer Erman , Susanti Aprilia , Taslim Rika , Apriwandi  
Published: March 2021

Abstract
Porous activated carbon monolith derived from renewable and environmentally friendly biomass of “red shoots” leaves (Syzygium oleana) was prepared for electrode material of supercapacitors. The raw materials were converted into biochar by using ZnCl2 impregnated and one-stage integrated pyrolysis. The samples were chemically activated using the 1 M ZnCl2, which was then converted into monolith/pellet by using a hydraulic press. The carbon monolith were then one-stage integrated pyrolysis both carbonization and physical activation. This study is focused in different carbonization temperature including 500 °C, 600 °C and 700 °C. The reduction of density in the activated carbon monoliths have been reviewed as physical properties. In addition, the XRD and FTIR characterization also reviewed. Based on this, the activated carbon monolith from “red shoots” leaves biomass for supercapacitors deliver a high specific capacitance of 138.5 F g−1 in 1 M H2SO4 aqueous electrolyte at low scanning rate of 1 mVs−1. This results demonstrate the successfully conversion “red shoots” leaves (Syzygium oleana) biomass into renewable and environmentally friendly electrode supercapacitor energy storage.
Strong rainbow connection numbers of helm graphs and amalgamation of lollipop graphs
Authors: Fauziah G R , Purwanto  , Rahmadani D 
Published: March 2021

Abstract
An edge coloring of a graph is called rainbow coloring if any pair of vertices are connected by a path with different colors of edges. Let G be a simple connected graph. A rainbow u — v geodesic in G is a path between two vertices u and v in G of length d(u,v), where d(u,v) is the distance of those vertices, and all of its edges are colored by different colors. If G contains a rainbow u — v geodesic for every pair of distinct vertices u and v in this graph, then G is called strongly rainbow connected graph. The strong rainbow connection number of G, denoted by src(G), is the least number of colors needed to make Gstrongly rainbow connected graph. In this paper, we prove that helm graphs and amalgamation of lollipop graphs are strongly rainbow connected graphs.
On the locating chromatic number of some Buckminsterfullerene-type graphs
Authors: Putri Y S , Yulianti L , Yanita  
Published: March 2021

Abstract
Let G = (V, E) be a nontrivial graph and k be a positive integer. Let c : V(G) → {1,2,3,…,k} be a vertex coloring of G such that if uv ∈ E(G) then c(u) ≠ c(v). For 1 ≤ i ≤ k, let Si be the ith set of vertices given color i and define Π = {S1
,S2
,…,Sk
}. The color code of a vertex v ∈ V (G), denoted by cπ(v), is defined as the ordered k-tuple cπ(v) = (d(v, S1
), d(v, S2), … , d(v, S
k)), where d(v, Si) = min{d(v, x) | x ∈ Si} for 1 ≤ i ≤ k. If every two vertices u and v in G have different color codes, then c is defined as the locating k-coloring of G. The minimum number of color used in the locating k-coloring of G is defined as the locating chromatic number of G, denoted by XL(G). This paper determined the locating chromatic number of some Buckminsterfullerene-type graph and some (4, 6)-fullerene graphs.
Local antimagic vertex total coloring on fan graph and graph resulting from comb product operation
Authors: Amalia R , Masruroh  
Published: March 2021

Abstract
Let G = (V,E) be a connected graph with |V|=n and |E|=m. A bijection f: V(G) U E(G) → {1,2,3, …,n + m} is called local antimagic vertex total coloring if for any two adjacent vertices u and v, wt(u)≠ wt(v), where wt(u) = ∑e∈E(u)
f(e) + f(u), and E (u) is a set of edges incident to u. Thus any local antimagic vertex total labeling induces a proper vertex coloring of G where the vertex v is assigned the color wt (v). The local antimagic vertex total chromatic number χ1να
t(G) is the minimum number of colors taken over all colorings induced by local antimagic vertex total. In this paper we investigate local antimagic vertex total coloring on fan graph (Fn) and graph resulting from comb product operation of Fn
and F3
which denoted by Fnt> F3. We get two theorems related to the local antimagic vertex total chromatic number. First, χ1να
t(Fn) = 3 where n> 3. Second, 3 < χ1ναt(Fn > F3) < 5 where n > 3.
On the sigma value and sigma range of the join of a finite number of even cycles of the same order
Authors: Bulay-og M C A , Garciano A D , Marcelo R M 
Published: March 2021

Abstract
Let c : V(G) → N be a vertex coloring of a simple, connected graph G. For a vertex v of G, the color sum of v, denoted by σ(ν), is the sum of the colors of the neighbors of v. If σ(ω) = σ(ν) for any two adjacent vertices u and v of G, then c is called a sigma coloring of G. The sigma chromatic number of G, denoted by σ(G), is the minimum number of colors required in a sigma coloring of G. Let max(c) be the largest color assigned to a vertex of G by a coloring c. The sigma value of G, denoted by v(G), is the minimum value of max(c) over all sigma k—colorings c of G for which ρ(G) = k. On the other hand, the sigma range of G, denoted by ρ(G), is the minimum value of max(c) over all sigma colorings c of G. In this paper, we determine the sigma value and the sigma range of the join of a finite number of even cycles of the same order. In particular, if n > 4 and n is even, then we will show that ρ(kCn
) = v(kCn) = 2 if and only if (i)

k
≤

[

n
6

]

+
1

, whenever n = 0 (mod 4), and (ii)

k
≤

[

n
−
2

6

]

+
1

, whenever n = 2 (mod 4).
A tutorial of boomerang attack on SMALLPRESENT-[4]
Authors: Hutahaean I W , Lestari A A , Susanti B H 
Published: March 2021

Abstract
In 2010, Leander proposed a new version of the block cipher PRESENT with smaller block size, namely SMALLPRESENT-[n]. This algorithm is designed to deepen understanding of how the running time of the algorithm and the vulnerability of attack during the round increase with the number of rounds and s-boxes not determined on the algorithm. The boomerang attack is a variation of the differential attack introduced by Wagner in 1999. This attack uses two differential characteristics that are mutually independent in short rounds with high probability. This paper intends to present a lucid explanation of the boomerang attack. We illustrate the practical application of the boomerang attacks on two rounds of the SMALLPRESENT-[4], that includes the steps to find differential characteristic until key recovery, and explain the concept of attack for novice cryptanalysis. Based on experiments conducted, we found a boomerang differential characteristic on two rounds of SMALLPRESENT-[4] with a probability 2-10 and 4-bit subkey in the first round of the algorithm.
The relationship between internet growth and implementation of the internet of things
Authors: Sardjono W , Selviyanti E , Hobri  , Azizah R 
Published: March 2021

Abstract
Internet of Things (IoT) is actually not new in the world of information technology. Indonesia became the second largest country in terms of IoT implementation in Southeast Asia, Indonesia only lost to Thailand. The implementation of IoT has been carried out by several local companies such as Blue Bird, Pertamina Patra Niaga and Gojek. The IoT application has also been developed by several children of the nation such as Spekun and Qlue who are currently in the stage of business development. In the implementation of IoT several things become important to pay special attention to, including security systems, platforms, operating systems, communication standards and data analytics. Seeing the rapid development of IoT around the world, the Indonesian government is expected to be able to drive the development of IoT in Indonesia by assisting the development of information technology infrastructure and standardization in the implementation of IoT. In addition, the government is expected to be able to encourage the development of human resources that have capabilities not only as workers’ resources but also as creators of new technologies for the development of IoT. In the end, cooperation between the government, the private sector and the support of the Indonesian people is expected to make Indonesia have competitive advantages in the development of IoT, so that it can attract investors to enter Indonesia.
Optimizing Adaptive Neuro Fuzzy Inference System (ANFIS) parameters using Cuckoo Search (Case study of world crude oil price estimation)
Authors: Anshori M Y , Rahmalia D , Herlambang T , Karya D F 
Published: March 2021

Abstract
There are some methods that have found for estimating data and one of them is Adaptive Neuro Fuzzy Inference System (ANFIS). In estimation using ANFIS, there are some initial parameters such as premise parameters (nonlinear) and consequent parameters (linear) which should be fixed to be trained forward and backward by gradient descent. In this research with case study of world crude oil price estimation, initial ANFIS parameters will be optimized by Cuckoo Search method. Cuckoo Search uses reproduction strategy i.e. laying their eggs in the other bird’s nest. When the eggs are hatched, their chicks are fed by other birds. In Cuckoo Search method, initial ANFIS parameters is represented as bird nest position. Based on simulation, Cuckoo Search method can optimize initial ANFIS parameters giving the best estimation both of training data and testing data in world crude oil price estimation.
Development of teaching materials based on realistic mathematic education and its implementation in improving students’ creative thinking skills on comparative material
Authors: Royhana U , Widiatsih A , Atmaja I W W , Septory B J 
Published: March 2021

Abstract
4C’s skills (creative, critics, collaborative, communicative) are the skills that are required in the 21st-century era. Accordingly, creative thinking ability is one of the demands required. It can be develop anywhere; one of them is in the implementation of learning conducted at school. The learning implemented by the teachers at school is expected to maximize the development of students’ creative thinking skills. The learning model of realistic mathematics education (RME) is one of the learning models used to optimize learning. This research aimed to study the students’ creative thinking ability and the RME learning model’s implementation in improving students’ creative thinking ability in solving the problem in comparison material. In this research we used a new study, this study was combining among qualitative method and quantitative methode, we call it with mixed method. This research involved 70 respondents in the same school who were divided into the experimental class and control class. The first class there are 35 students from control class and the second class there are 35 students from experiment class. The result showed that there was a significant difference, as shown up in the value of independent t-test toward the post-test. The result of the research showed that the post-test stage in the control class revealed that 16% students were in the category of uncreative, 33% students were quite creative, 29% students were creative, and 22% students were very creative and in the experimental class, it was found that 9% students were uncreative, 18% students were quite creative, 31% students were creative, and 42% students were very creative according to the level of creative thinking ability. The data analysis presented that the value of independent sample t-test from the post-test was sig. 0.00 (p 0.05), tBerefore it was significant. Thus, there was an effect of the implementation of realistic mathematics education (RME) in improving students’ creative thinking ability in solving problems in comparison material.
The analysis of the implementation of research-based learning on the students combinatorial thinking skills in solving a resolving perfect dominating set problem
Authors: Aziza M O , Dafik  , Kristiana A I 
Published: March 2021

Abstract
The Indonesian government gives freedom to citizens to get a quality education, this will enable students to develop their potential in a more targeted way. The purpose of implementing research-based learning is to see the combinatorial thinking ability of students in completing the resolving perfect dominating set. The research method used a combination method (qualitative and quantitative) research methods involving 30 students divided into two classes, namely the control class 16 students and the experiment class 14 students. The implementation of research based learning was carried out in both classes, but there were differences in the implementation where the experiment class was given the developed tools, but not in the control class. Analysis of the results of the homogeneity test on the pre-test items showed that the two classes were homogeneous with a significant value of 0.171 ≥ 0.05, and the analysis of the results of the independent sample t-test on post test resuld showed that the sig (2-tailed) value is 0.007 (p ≤ 0.05) so its significant. The results that have been obtained in this study can be concluded that there is an increase in students’ combinatorial thinking skills in solving resolving perfect dominating set in research based learning.
The effect of guided inquiry based hypermedia on students’ high order thinking skills in thermodynamics concepts
Authors: Nurmalasari M , Hertanti E 
Published: March 2021

Abstract
Thermodynamics is a concept in physics that is considered difficult. This is because the students have to use high order thinking skills. Meanwhile, some research results indicate that students’ high order thinking skills are still low. In this study, guided inquiry based hypermedia was applied to hone students’ high order thinking skills on thermodynamics concepts. This research was conducted at SMA Islam Terpadu Mentar iIlmu Karawang in April 2020. Quasi-experimental was used as a method in this research. The research sample was class XI students who were grouped into the experimental class and the control class. The test instruments used were essay questions and non-test instruments used were questionnaires. The N-gain result shows that the posttest mean score of the experimental class increased. However, the increase was categorized as moderate. Hypothesis testing shows that there is an effect of guided inquiry based hypermedia on students’ high order thinking skills. Meanwhile, the results of the questionnaire showed that learning using hypermedia based on guided inquiry received a positive response from students and was categorized as very good (83%).
Development of authentic assessment to improve students’ mathematical problem solving ability
Authors: Firdausi  , Supinah R 
Published: March 2021

AbstractThis study aims to find out how the implementation of authentic assessment development in producing a valid product by the principles and characteristics of authentic assessment to improve students’ mathematical problem-solving abilities. This research uses research and development methods with the stages of carrying out needs analysis, literature review, pre-test, designing an authentic assessment form, and conducting a post-test to determine students’ mathematical problem solving abilities before and after using authentic assessment. The results of the study concluded that the stages of authentic assessment development had been carried out through a limited validation process and broader validation involving experts to produce a product taking into account the principles and characteristics of authentic assessment. There is a difference in the average results of students’ mathematical problem-solving skills between the results of the post-test compared with the results of the students’ pre-test, so it is said that the development of authentic assessment can improve students’ mathematical problem-solving abilities.
Assessing islamic junior high schools students’ scientific literacy using PISA released items
Authors: Ramli M , Susanti B H , Yohana M P , Rozak A 
Published: March 2021

Abstract
This study aims to assesscientific literacy of students of Islamic Junior High Schools (Madrasah Tsanawiyah/MTs) by using the PISA released items. This study used a sequential explanatory research method with a mixed quantitative and qualitative approach. A total of 102students from 5 Madrasahs in West Sumatra and DKI Jakarta Provinces were selected using a purposive sampling technique. The instrument used is a scientific literacy test to collect quantitative data and interview guides for qualitative data. The quantitative data obtained were analysed using descriptive and inferential statistics, while the qualitative data were analysed using thematic analysis. The results show that scientific literacy score of Madrasah Tsanawiyah’s students is lower than the average score of OECD countries. The findings show that there are several factors that cause the low scores of madrasah students such as they are lackingof practicing the similar questions and lacking of opportunity to conducting science experiments.