bluuebunny/crossref_metadata_2025_split huggingface dataset:
Electrical brain stimulation and continuous behavioral state tracking in ambulatory humans
Authors: Mivalt Filip , Kremen Vaclav , Sladky Vladimir , Balzekas Irena , Nejedly Petr , Gregg Nicholas M , Lundstrom Brian Nils , Lepkova Kamila , Pridalova Tereza , Brinkmann Benjamin H , Jurak Pavel , Van Gompel Jamie J , Miller Kai , Denison Timothy , St. Louis Erik K , Worrell Gregory A 
Published: January 2022

Abstract

Objective. Electrical deep brain stimulation (DBS) is an established treatment for patients with drug-resistant epilepsy. Sleep disorders are common in people with epilepsy, and DBS may actually further disturb normal sleep patterns and sleep quality. Novel implantable devices capable of DBS and streaming of continuous intracranial electroencephalography (iEEG) signals enable detailed assessments of therapy efficacy and tracking of sleep related comorbidities. Here, we investigate the feasibility of automated sleep classification using continuous iEEG data recorded from Papez’s circuit in four patients with drug resistant mesial temporal lobe epilepsy using an investigational implantable sensing and stimulation device with electrodes implanted in bilateral hippocampus (HPC) and anterior nucleus of thalamus (ANT). Approach. The iEEG recorded from HPC is used to classify sleep during concurrent DBS targeting ANT. Simultaneous polysomnography (PSG) and sensing from HPC were used to train, validate and test an automated classifier for a range of ANT DBS frequencies: no stimulation, 2 Hz, 7 Hz, and high frequency (>100 Hz). Main results. We show that it is possible to build a patient specific automated sleep staging classifier using power in band features extracted from one HPC iEEG sensing channel. The patient specific classifiers performed well under all thalamic DBS frequencies with an average F1-score 0.894, and provided viable classification into awake and major sleep categories, rapid eye movement (REM) and non-REM. We retrospectively analyzed classification performance with gold-standard PSG annotations, and then prospectively deployed the classifier on chronic continuous iEEG data spanning multiple months to characterize sleep patterns in ambulatory patients living in their home environment. Significance. The ability to continuously track behavioral state and fully characterize sleep should prove useful for optimizing DBS for epilepsy and associated sleep, cognitive and mood comorbidities.
The local strong metric dimension in the join of graphs
Authors: Amalia R , Firdausiyah  , Yulianto T , Faisol  , Kuzairi  
Published: January 2022

Abstract
Let G be a connected graph. A vertex w is said to strongly resolve a pair u, ν of vertices of G if there exists some shortest u − w path containing ν or some shortest ν − w path containing u. A set W of vertices is a local strong resolving set for G if every pair of adjacent vertices of G is strongly resolved by some vertex of W. The smallest cardinality of a local strong resolving set for G is called the local strong metric dimension of G. In this paper we studied the local strong metric dimension in the join of graphs. We use the path, cycle, complete, and star graphs in this studies.
On twin edge mean colorings of graphs
Authors: Tolentino J D , Tolentino M A C , Bernales E B 
Published: January 2022

Abstract
Let k ≥ 2 be an integer and G be a connected graph of order at least 3. In this paper, we introduce a new neighbor-distinguishing coloring called twin edge mean coloring. A proper edge coloring of G that uses colors from ℕ
k
= {0,1,…, k − 1} is called a twin k-edge mean coloring of G if it induces a proper vertex coloring of G such that the color of each vertex υ of G is the average of the colors of the edges incident with υ, and is an integer. The minimum k for which G has a twin k-edge mean coloring is called the twin chromatic mean index of G and is denoted by

χ

t
m

′

(
G
)

. First, we establish lower and upper bounds for

χ

t
m

′

(
G
)

under general or more specific assumptions. Then we determine the twin chromatic mean indices of paths, cycles, and stars.
Some result on integrality of several matrix representation of complete r-uniform hypergraph
Authors: Zakiyyah A Y 
Published: January 2022

Abstract
The eigenvalues of matrix representation hypergraph have the possibility that all of it can be an integer or otherwise. The Laplacian integral hypergraphs are those hypergraphs whose Laplacian spectrum consists entirely of integers likewise the definition of signless Laplacian integral and Seidel integral. This research focuses on the properties of the entry matrix and formulates the spectrum of the Laplacian matrix, Signless Laplacian matrix, and Seidel Matrix of complete r-uniform hypergraphs. Hence, it can determine the integrality of the representation matrix respectively. The result concludes that complete r-uniform hypergraphs are Laplacian integral, signless Laplacian integral, and Seidel integral.
The mixed metric dimension of wheel-like graphs
Authors: Darmaji  , Azahra N 
Published: January 2022

Abstract
Consider the graph G = (V, E). It is a connected graph. It is a simple graph too. A node w ∈ V, then we call vertex, determined two elements of graph. There are vertices and edges of graphs. Any two vertices x, y ∈ E ∪ V if d(w, x) ≠ d(w, y), which d(w, x) and d(w, y) is the mixed distance of the element w (vertices or edges) in graph G. A set of vertices in a graph G is represented by the symbol Rm
that defines a mixed metric generator for G, if the elements of vertices or edges are stipulated by several vertex set of Rm
. There’s a chance that some mixed metric generators have varied cardinality. We choose one whose the minimum cardinality and it is called the mixed metric dimension of graph G, denoted by dimm
(G). This research examines the mixed metric dimension of gear Gn
, helm Hn
, sunflower SFn
, and friendship graph Frn
. We call these graphs by wheel-like graphs. Our findings include the mixed metric dimension of gear graph Gn
of order n ≥ 4 is dimm
(Gn
) = n, helm graph Hn
of order n ≥ 4 is dimm
(Hn
) = n, sunflower graph SFn
of order n ≥ 5 is dimm
(SFn
) = n and friendship graph Frn
of order n ≥ 3 is dimm
(Frn
) = 2n.
On resolving efficient domination number of path and comb product of special graph
Authors: Kusumawardani I , Dafik  , Kurniawati E Y , Agustin I H , Alfarisi R 
Published: January 2022

Abstract
We use finite, connected, and undirected graph denoted by G. Let V (G) and E(G) be a vertex set and edge set respectively. A subset D of V (G) is an efficient dominating set of graph G if each vertex in G is either in D or adjoining to a vertex in D. A subset W of V (G) is a resolving set of G if any vertex in G is differently distinguished by its representation respect of every vertex in an ordered set W. Let W = {w
1, w
2, w
3, …, wk
} be a subset of V (G). The representation of vertex υ ∈ G in respect of an ordered set W is r(υ|W) = (d(υ, w
1),d(υ, w
2), …, d(υ, wk
)). The set W is called a resolving set of G if r(u|W) ≠ r(υ|W) ∀ u, υ ∈ G. A subset Z of V (G) is called the resolving efficient dominating set of graph G if it is an efficient dominating set and r(u|Z) ≠ r(υ|Z) ∀ u, υ ∈ G. Suppose γre
(G) denotes the minimum cardinality of the resolving efficient dominating set. In other word we call a resolving efficient domination number of graphs. We obtained γreG of some comb product graphs in this paper, namely Pm
⊲ Pn
, Sm
⊲ Pn
, and Km
⊲ Pn
.
On graceful chromatic number of some graphs
Authors: Asy’ari M L , Dafik  , Agustin I H , Nisviasari R , Adawiyah R 
Published: January 2022

Abstract
We examine that all graphs in this paper are limited, simple and connected. A graceful k-coloring of a graph is a proper vertex coloring f
1 : V (G) → {1, 2,…, k} where k ≥ 2 which induces a proper edge coloring f
2 : E (G) → {1, 2,…, k − 1} characterized by f
2(uυ) = |f
1(u) — f
2 (υ)|. Nethermost k for which a graph G has a graceful k-coloring is named a graceful chromatic number of a graph G, denoted by χg
(G). In our research, we will obtain the exact value of the graceful chromatic number of some graphs.
On the rainbow antimagic coloring of vertex amalgamation of graphs
Authors: Joedo J C , Dafik  , Kristiana A I , Agustin I H , Nisviasari R 
Published: January 2022

Abstract
The purpose of this study is to develop rainbow antimagic coloring. This study is a combination of two notions, namely antimagic and rainbow concept. If every vertex of graph G is labeled with the antimagic labels and then edge weight of antimagic labels are used to assign a rainbow coloring. The minimum number of colors for a rainbow path to exist with the condition satisfying the edge weights w(x) ≠ w(y) for any two vertices x and y is the definition of the rainbow antimagic connection number rac(G). In this study, we use connected graphs and simple graphs in obtaining the rainbow antimagic connection number. This paper will explain the rainbow antimagic coloring on some graphs and get their formula of the rainbow antimagic connection number. We have obtained rac(G) where G is vertex amalgamation of graphs, namely path, star, broom, paw, fan, and triangular book graph.
On the r-dynamic chromatic number of subdivision of wheel graph
Authors: Riba’ah R Z , Dafik  , Kristiana A.I , Maylisa I.N , Slamin  
Published: January 2022

Abstract
Let H be simple, non-isolated vertex, connected and directionless graphs with vertex set V (H), edge set E(H). With the use of c-coloring of graph H, using the formula c : υ(H) → S, where |S| = c, the colors of the adjacent vertex are different. A proper c-coloring of H is an r-dynamic coloring if it’s applied to every vertex υ ∈ V (H) satisfies |c(N(υ))| ⩾ min {r, d(υ)}. The minimum c such that H has an r-dynamic coloring with c colors is called an r-dynamic chromatic number, denoted by χ

r
(H). In this study, we will obtain the exact value of r-dynamic chromatic number of subdivision by wheel graph.
Improving the robustness of the affine cipher by using a rainbow antimagic coloring
Authors: Nisviasari R , Dafik  , Agustin I H , Kurniawati E Y , Maylisa I N , Septory B J 
Published: January 2022

Abstract
Nowadays, cryptosystems can be applied in several areas in life. One of them is in transaction data. In transaction data, a very strong cryptosystem is needed so that the transaction data is safe. Cryptosystems are better with a strong keystream. In this case, we use rainbow antimagic as a cryptosystem key to improve the robustness of the keystream by using affine cipher. The algorithm uses the edge weights of rainbow antimagic vertex labeling of graphs as a key for encryption and decryption. In this paper, we found the rainbow antimagic connection number of tadpole graphs and two algorithms to straighten affine ciphers.
Determination of Hue Saturation Value (HSV) color feature in kidney histology image
Authors: Kurniastuti I , Yuliati E N I , Yudianto F , Wulan T D 
Published: January 2022

AbstractThe kidney is organ that plays an important role in the body’s metabolism, especially the process of filtration and reabsorption of food waste. Currently the determination of kidney parts through kidney histology is still done manually by experts based on experience and knowledge. Therefore, to make it easier to determine the parts of the kidney, a histological image segmentation of the kidney was carried out. In the segmentation process, it is necessary to extract the color features of the parts of the kidney, namely the glomerulus and proximal tubule. The color features used are Hue, saturation, value (HSV) color space. The hue means the representation of color type. The saturation defines the amount of white color is mixed with hue. The value in HSV color space denotes the intensity or lightness or brightness of the color. The method consists of three steps such as pre-processing step, extraction feature HSV and statistical analysis. The result of statistical analysis showed that the hue and value features, glomerulus and proximal tubule had different ranges of values. However, the features of saturation, glomerulus and proximal tubule is overlap.
Estimation of Packed Red Cells (PRC) in Bojonegoro blood bank using Modified Kalman Filter
Authors: Muhith A , Herlambang T , Rahmalia D , Karya D F 
Published: January 2022

Abstract
Blood Transfusion Unit (UTD) as a blood supply provider is required to meet the demand for blood, but in reality, the blood stock does not always meet the blood demand. The blood type stocks in the Blood Transfusion Unit (UTD) relies on blood donors voluntarily donating their blood. Red blood cells only have a life span of 35 days as of the blood donation date. If overdue the blood cannot be used for transfusion. Fulfillment of the availability of blood is a very important thing. On one hand, too much blood stock results in significant losses, such as expiration. On the other hand, too low blood stock makes the people’s blood needs unfulfilled. Therefore, this paper is an effort to estimate the blood supply at Indonesian Red Cross Bojonegoro by using the Modified Kalman Filter method. The Modified Kalman Filter is a comparison of two Kalman Filter development methods, those are Extended Kalman Filter (EKF) and Fuzzy Kalman Filter (FKF). The simulation results showed that the EKF method was accurate than the FKF method, with an error of 3 % generated by the EKF and that of 9% by the FKF.
Estimation of Thrombocyte Concentrate (TC) in PMI Gresik using unscented and square root Ensemble Kalman Filter
Authors: Muhith A , Herlambang T , Rahmalia D , Irhamah  , Karya D F 
Published: January 2022

Abstract
Ministry of Health established the Indonesian Red Cross (PMI) as an organization to anticipate the need for blood by obligation to provide enough proper blood for use. Its process of delivering information related to blood donation requires the public always come to PMI. In such way it is less efficient and effective. In addition, there is no system for estimating blood stock to anticipate the blood supply needed in the next period. Blood transfusion is needed in terms of both quality and quantity by patients suffering from various health problems. Due to the urgency of blood transfusion, maintaining the stability of blood stock is a must so as not to cause blood loss due to excessive of the blood stock. To minimize such loss, blood stock prediction is needed. The objective of this study was to estimated the blood demand for blood type of Thrombocyte Concentrate (TC) or concentrated red blood cells at PMI Gresik by applying the method of Unscented Kalman Filter (UKF) and Square Root Ensemble Kalman Filter (SR-EnKF). The simulation results showed that both methods have high accuracy with an error of less than 3%.. The best simulation showed that the error between the real data and the simulation with SR-EnKF was in the order of 0.0023574 with generated 300 ensembles. Where as that with UKF was some 0.025566.
Design of conveyor table with quality function deployment method and statistical analysis of anthropometry data approach as a physical distance tool for SMEs
Authors: Sinaga Zulkani , Montororing Yuri Delano Regent , Muhazir Achmad 
Published: January 2022

Abstract
The world is currently facing with COVID-19 pandemic. One way to prevent the spread of COVID-19 is to do physical distancing. However, this has an impact on the continuity of the economy and business. The Ministry of Trade, Cooperatives, SMEs, and Industry announced that the Covid-19 pandemic affected the activities of SMEs. One of the SMEs that impacted is the commercial sector, such as markets, essential food stores, food stalls, coffee shops, etc. Before the Covid-19 pandemic, the business process carried out was face-to-face with customers without any distance. So that when the physical distancing rules are implemented, the service flow will be disrupted. With this conveyor, the SMEs service process flow can support business process activities properly and smoothly while still complying with physical distancing rules. The process of moving business products from the seller to the consumer is done automatically. Based on these problems, it is necessary to design a conveyor table that will be used as a media for physical distancing tools that are in according needs of the user using the Quality Function Deployment method and statistical analysis of anthropometric data approach.
Production process improvements to minimize product defects using DMAIC six sigma statistical tool and FMEA at PT KAEF
Authors: Montororing Yuri Delano Regent , Widyantoro Murwan , Muhazir Achmad 
Published: January 2022

Abstract
PT KAEF is one of the pharmaceutical manufacturing industries in Indonesia that produces various kinds of drug variants. Currently, PT KAEF is experiencing problems in the form of product defects that exceed the company’s standard, which is 1%. By using the DMAIC Six Sigma Statistical tool (Define, Measure, Analyze, Improve, and Control), it is possible to evaluate the possibility of failure of the production system so that the cause of each product defect can be identified and get the right problem-solving solution and with Failure Mode Effects Mode can be known the solutions for the priority problems. From the search results, it can be seen that liquid products are the products with the most defects, with the causes of defects caused by errors in work procedures and the use of old machines. From the improvement results, it was found that the level of product defects decreased from 2,26% to 0,93% or in sigma level increase from 4,18 to 4,46.
n-cutting site of DNA splicing language for single string and palindromic rule
Authors: Ruslim N M , Yusof Y , Adzhar N 
Published: January 2022

Abstract
A new symbolization of Yusof-Goode (Y-G) splicing system was introduced by Yusof in 2012, is inspired by the framework of Formal Language Theory introduced by Head in 1987. Y-G splicing system is intended to present the biological process of DNA splicing in a translucent way. In this paper, starting with some relevant preliminaries, one theorem is proposed via Y-G approach using one initial string and one rule with different characteristics of the restriction enzyme. Additionally, the theorem showed the behavior of the splicing languages generated at single stage splicing. Two cases are considered in the theorem by conducting splicing using palindromic rule and palindromic recognition site with same left and right context for Case I and different left and right context for Case II. Furthermore, two molecular examples are discussed to validate two cases proposed in the theorem, which shows the real meaning of the theorem in biological aspect. From the proposed theorem, based on the splicing language generated, the type of splicing language can be determined. It is discovered that, the generated languages are in the form of limit and transient.
A meta analysis study: is Problem Based Learning (PBL) effective toward students’ mathematical connections ability?
Authors: Aisyah S , Usdiyana D 
Published: January 2022

AbstractPBL has become a popular topic in educational research studies. Several studies examine the effect of PBL toward students’ mathematical connection abilities. A total of 8 articles qualified for inclusion. This study analyzed them using Meta Analysis with the Comprehensive Meta-Analysis (CMA) application by selecting the Hedge’s equation to determine its effect size and bias publication was assessed by the funnel plot, and Rosenthal’s fail-safe N (FSN) test. Based on the analysis result, the overall effect size is 0.797 according to random-effect model with a 95% confidence interval (CI). It was classified as a moderate level. The findings of the study showed that the overall implementation of PBL had a larger positive effect significantly compared to conventional learning on the students’ mathematical connection’s ability. Because, in the implementation of the PBL model, students are faced with problems that are closely related to everyday life. This shows that mathematical connection ability is needed one of which is the aspects of the connection between mathematics and daily life. Doing this research can support the development of learning and can be an alternative learning model to improving students’ mathematical connections ability.
An analysis of students learning independence in mathematics based on google classroom
Authors: Sipayung T N , Imelda  , Siswono T Y E , Masriyah  
Published: January 2022

Abstract
Learning independence is something that is expected in this digital era. So much knowledge can be obtained from various sources, not only from learning at school. For this reason, qualitative research is needed to analyze it. The purpose of this qualitative research with the case study method is to analyze student learning independence in online learning mathematics based on google classroom. The technique used is by giving questionnaires to students through a google form that is distributed in google classroom. This study was applied to 30 students grade VII-A of SMP Santo Yoseph Medan in the 2021/2022 Academic Year. Based on the learning independence questionnaire that has been filled out by students, the results show that the average percentage of students’ dependence on others is 86.27, students have self-confidence is 71.07, students behave in a disciplined manner is 72.86, students have a sense of responsibility are 72.67, students have behaviour based on their own initiative is 91.33, students do self-control is 77.55. So, based on overall indicators of learning independence, it is concluded that students are independent in learning mathematics with an average percentage of 78.63. From several indicators of learning independence, it was found that the attitude on one’s own initiative was more dominant than some other indicators.
The analysis of students metaliteracy under the implementation of RBL-STEM in solving graph rainbow antimagic coloring problems
Authors: Kurniawati E Y , Dafik  , Agustin I H , Maylisa I N 
Published: January 2022

Abstract
Problem-solving can grow if students are trained to have metaliteracy. Metaliteracy is the ability to think that focuses on critical thinking skills and collaborative efforts. This study aims to determine the impact of the implementation of RBL-STEM to analyze the metaliteracy of students in solving rainbow antimagic coloring problems. The methods used in this study were a combination of quantitative and qualitative methods. This research used two classes, experimental and control. Both classes were given the same treatments with different experiment classes using LKM that have been developed with the RBL model. The analysis of the results of the homogeneity test on the pre-test items showed that the two classes were homogeneous with a significant value is ≥ 0.05, and the results of the independent sample t-test on post test result showed that the sig (2-tailed) value is 0.000 (p ≤ 0.05) so its significant. It can be concluded that the RBL-STEM model can improve the metaliteracy level of the students in solving rainbow antimagic coloring.