bluuebunny/crossref_metadata_2025_split huggingface dataset:
Estimation of Loading-Driven Fluid-Flow Pattern in Lacunar-Canalicular Space Using Fluid Structure Interaction
Authors: Kumar Rakesh , Khana Salil , Tiwari Abhishek Kumar , Tripathi Dharmendra , Sharma Niti Nipun 
Published: May 2020

Abstract
Bone cells namely osteoblasts and osteocytes are assumed responsible for loading-induced osteogenesis. Osteocytes lie within the bone and connect to each other via cell process passing through canalicular spaces which forms a canalicular network. Fluid motion across this network acts as a medium of communication with neighbouring cells. Mechanical loading-induced pressure gradients in lacunar canalicular space (LCS) causes canalicular fluid to flow. However, it remains unclear how canalicular fluid motion and solid structure interact with each other under loading derived strain environment. In the present study, a two-way fluid structure interaction model is developed to estimate canalicular fluid flow behaviour. Flow streamlines and wall shear stress are computed. Results indicates that wall shear due to fluid flow on the pores wall is also in the same pattern as the velocity streams and velocity is maximum at those regions where the wall shear is also maximum. The outcomes provide a better understanding for developing strategies to enhance the fluid flow in bone, which may ultimately be useful in the development of effective countermeasure for the reversal of bone loss.
Mhd flow of nanofluids in the presence of porous media, radiation and heat generation through a vertical channel
Authors: Mehta R , Chouhan V S , Mehta T 
Published: May 2020

Abstract
Aim of present study is to identify the effects of radiation and heat generation in unsteady MHD mixed convective flow of nanofluids along a upstanding channel through porous medium. Four types of nanofluids were studied (i) Water based – Ag (ii) Water based – Al2O3. Water is taken as convectional base fluid and Ag and Al2O3 particles are incorporated in this base fluid. Keeping in mind the congregating and random motion of nanoparticles, “Koo and Kleinstreuer model” is used. The main characteristics of the nanofluids have finer thermo physical properties such as high thermal conductivity, minimal bloking in flow passage, long term solidity and uniformity. The governing boundary layer equations are formulated and reduced to a set of ordinary differential equations using perturbation technique. Solutions are obtained for motion and temperature, discussed and pertinent results are shown through graphs.
VI Congress on Innovation and Appropriation of the Technologies of Information and Communications
Authors: Bayona-Ibáñez E , Sandoval-Amador A , V-Niño E D 
Published: May 2020

The International Congress on Innovation and Appropriation of the Technologies of Information and Communications (CIATIC) is an initiative of the Network of Computer Engineering and Related Programs of North-Eastern Colombia. Accordingly, the CIATIC is a space for promoting and developing innovation and appropriation of information and communication technologies by facilitating the exchange and transfer of knowledge through the presentation of research advances in technological trends, as well as allowing the creation of collaborative networks to generate research and innovation in the field.
The sixth version of the International Congress on Innovation and Appropriation of the Technologies of Information and Communications (VI CIATIC) was held in the municipality of Ocaña, in the department of Norte de Santander, Colombia, on 25-27 September 2019. The “Universidad Francisco de Paula Santander, Seccional Ocaña”, Colombia, hosted the event. The universities that participated in 2019 as co-organizers of the Congress and are part of the Northeast region were: Universidad Pontificia Bolivariana (UPB), headquarter Bucaramanga, Universidad Autónoma de Bucaramanga (UNAB), Universidad Popular del Cesar (UPC), headquarter Aguachica, Fundación Universitaria de San Gil (UNISANGIL), and the Universidad Francisco de Paula Santander (UFPS), headquarters San José de Cúcuta and Ocaña. The participation of the universities, contributed to the internationalization, with the participation of professors and researchers from different countries of the American and European continent, such as, Mexico, United States, Ecuador, Sweden, Venezuela, Chile, and of course, Colombia, which allowed strengthening the research processes and know the different current trends on information and communication technologies.
List of Organizing Committee, International Scientific Committee, National Scientific Committee and Sponsors are available in this pdf.
Development of a monitoring module for physical and virtual servers: Advanced computing center case of the Universidad Pontificia Bolivariana, Bucaramanga, Colombia
Authors: Mantilla K I , Flórez A 
Published: May 2020

Abstract
The management and administration of physical and virtual servers requires a series of periodic activities that allow to show the optimal operation and the fulfillment of its objective of providing computational services. The work of monitoring servers allows the allocation and use of adequate resources, as well as assertive decision making in strategies for projection and scalability of resources. This article presents the results found in the process of development and implementation of the monitoring module of physical and virtual servers of the Advanced Computing Center of the Universidad Pontificia Bolivariana, Bucaramanga, Colombia, in which through the generation and display of reports in real time offer the coordinator of the center information of the current state of resources leading to the right decisions to improve the service provided at the level of efficiency, performance, among others. The results of the project were the design of the graphical interface, the development of the information system which was programmed with PHP language, the connection in real time with physical and virtual server made via SSH; the scripts programmed in platforms such as XenServer, Windows Server and Linux for CentOS, Debian and Ubuntu distributions.
Information and communications technologies in androgynous learning
Authors: Cárdenas García F M , Cárdenas García M , de J Cañizares Arévalo J 
Published: May 2020

AbstractThe globalization of the economy, information and communications has allowed the social dynamics to be competitive, leading to social transformations, to respond to these demands they require new educational approaches as an alternative in the transformation of environments in line with the globalized world. The information and communication technologies used as an educational resource play an important role, facilitating the interaction, transport and dissemination of knowledge to remote places, where androgynous learning is required, a fundamental option for the formation and training of society, which leads us to reflect about the actions of teaching in adult education. The methodology used was based on the qualitative paradigm supported by phenomenological research methods, hermeneutics and ethnomethodology allowing close relationship with key informants, triangulation was used as a strategy to correct distortions. As results, the theoretical, epistemological foundation framed in significant elements that are derived from ontological, gnoseological, philosophical, pedagogical and andragogical postulates is established, establishing pedagogical conceptualization. In conclusion, it is considered that teaching models constitute the path for the transmission of knowledge, it is there that the technological tools of information and communications become facilitating means in the teacher-student interaction, allowing the efficient development of curricular activities.
Advance in the computational tools that support the cooperative sector in Colombia
Authors: Pacheco C A , Quintero B T , Coronel-Rojas L A 
Published: May 2020

Abstract
The technological evolution in the 21st century allows organizations to define flexible and integral processes and information systems that guarantee their competitiveness and sustainability. The dynamics of the cooperative sector seeks to use, merge and implement new technological components, aimed mainly at strengthening its business model. The descriptive quantitative research achieves an approach with seven cooperatives (savings and credit) of the Catatumbo Region, Colombia, through the survey technique in order to determine the adaptation of cooperatives in the global panorama of information and communication technologies. In conclusion, the managers of savings and credit cooperatives require technologies to support administrative and strategic operations, as well as contribute to the design and implementation of software to ensure quality, security and effectiveness of institutional information and services to all their stakeholders, prioritizing in contributing to closing the digital divide and social inequality.
Edge irregular reflexive labeling of some tree graphs
Authors: Hesti Agustin Ika , Utoyo Imam , Dafik  , Venkatachalam M. 
Published: May 2020

Abstract
Let G be a connected, simple, and undirected graph with a vertex set V(G) and an edge set E(G). Total k-labeling is a function fe
from the edge set to the first ke
natural number, and a function fv
from the vertex set to the non negative even number up to 2kv, where k = max{ke
, 2kv
}. An edge irregular reflexive k labeling of the graph G is the total k-labeling, if for every two different edges x
1
x
2 and

x
1
′

x
2
′

of

G
,

w
t
(

x
1

x
2

)
≠
w
t
(

x
1
′

x
2
′

)

, where

w
t
(

x
1

x
2

)
=

f
v

(

x
1

)
+

f
e

(

x
1

x
2

)
+

f
v

(

x
2

)

. The minimum k for graph G which has an edge irregular reflexive k-labelling is called the reflexive edge strength of the graph G, denoted by res(G). In this paper, we determined the exact value of the reflexive edge strength of family trees, namely generalized sub-divided star graph, broom graphs, and double star graph.
The local edge metric dimension of graph
Authors: Adawiyah R , Dafik  , Alfarisi R , Prihandini R M , Agustin I H , Venkatachalam M 
Published: May 2020

Abstract
In this paper, we introduce a new notion of graph theory study, namely a local edge metric dimension. It is a natural extension of metric dimension concept. dG
(e,v) = min{d(x,v),d(y,v)} is the distance between the vertex v and the edge xy in graph G. A non empty set

S
⊂
V

is an edge metric generator for G if for any two edges

e
1

,

e
2

∈
E

there is a vertex

k
∈
S

such that

d
G

(
k
,

e
1

≠

d
G

(
k
,

e
2

)
)

. The minimum cardinality of edge metric generator for G is called as edge metric dimension of G, denoted by dimE
(G). The local edge metric dimension of G, denoted by dimE
(G), is a local edge metric generator of G if

r
(
x
k
|
S
)
≠
r
(
y
k
|
S
)

for every pair xk,ky of adjacent edges of G. Our concern in this paper is investigating some results of local edge metric dimension on some graphs.
Twin Paired Domination number of a graph
Authors: Mahadevan G. , Suganthi M. Vimala 
Published: May 2020

Abstract
A new domination papramter “Twin paired domination number” is introduced in this paper. The set

S
⊆
V

is called as be twin paired dominating set, if S is a paired dominating set and

<

S
c

>

has a perfect matching. The minimum cardinality over all S is called as twin paired domination number and it is denoted by TPD(G). In this paper, we investigate this parameter for some standard, special type graphs and for some power graphs.
Hybrid fuzzy kinetic model of phosphorite pellets drying process
Authors: Bobkov V , Borisov V , Fedulov Ya 
Published: May 2020

Abstract
The chemical-technological process of phosphate pellets drying is investigated in the paper. The hybrid fuzzy kinetic model of phosphorite pellets drying process is proposed. The features of the proposed model are as follows: firstly, differential equations with fuzzy thermal-physical characteristics of pellets are used to estimate the thermal conductivity of pellets; secondly, a fuzzy rule-based model is used to determine the most difficult parameters to calculate. The method based on the developed hybrid model is proposed for analyzing the drying process of phosphorite pellets. The proposed method uses an original approach that allows solving the problem of increasing uncertainty of results in iterative calculations based on the modal interaction of fuzzy thermal characteristics represented by fuzzy numbers.
Modelling of disordering regions in proton-irradiated silicon
Authors: Bogatov N , Grigoryan L , Klenevsky A , Kovalenko M , Nesterenko I 
Published: May 2020

Abstract
A model of disordering regions generation as a result of interstitial atom-vacancy pairs separation in view of neutral and charged pair states was developed. The model allows to define the radius and the mean number of vacancies of a disordering region. Distribution profiles of interstitial silicon, vacancies, divacancies, disordering regions created by low-energy protons in silicon were calculated, as well as the disordering regions parameters dependencies on proton energies. It was shown that the disordering region distribution maximum is spatially separated from interstitial silicon, vacancies and divacancies distribution maximums. This allows to differentially modify superficial and volumetric properties of semiconductor structures.
Implementation of Modul Based on Snowball Throwing Model to Improve Interest of Exercise Working in Mathematical Learning for 4th Grade in SDN 19 Nan Sabaris
Authors: Rismaini L , Erdriani D , Dewimarni S 
Published: May 2020

Abstract
This research is motivated by the low interest of students in the training in mathematics learning in the fourth grade of SDN 19 Nan Sabaris, Padang Pariaman Regency. The purpose of this study was to look at the contribution of snowball throwing-based teaching materials to increase the interest in working on mathematics training for fourth grade students of SDN 19 Nan Sabaris. This type of research is descriptive, with a sample of all fourth grade students of SDN 19 Nan Sabaris registered in the 2018/2019 school year. The sampling technique used was purposive sampling because the available sample classes were limited. The instrument used was the observation sheet, and the results of the instrument analysis showed an increase in students’ interest in doing mathematics training after the use of Snowball Throwing-based teaching materials in grade IV SDN 19 Nan Sabaris.
Preliminary Reasearch Development of Mathematics Learning Device Based on Cognitive Conflict to Improve Critical Thinking Ability of 1st Grade Senior High School Students
Authors: Juwita R , Fauzan A 
Published: May 2020

Abstract
This research discusses about the development of mathematics learning device based on cognitive conflict to improve critical thinking skills of class X students. Learning device was developed in the form of Learning Implementation Plans (in the form of RPP) and Student Worksheets (SW). The model of development research that has been used in this study is the Plomp model (Preliminary Research, Prototyping Phase, and Assessment Phase). However, this research only reached to the preliminary research stage. The subject of this study was the 1st grade students of SMAN 3 Painan. Based on the results of interviews to several teachers of SMAN 2 Painan and SMAN 3 Painan concluded that the learning device used by teachers have not been able to stimulate students to think critically optimally.
Preliminary Research of Mathematics Learning Device Development Based on Realistic Mathematics Education (RME)
Authors: Ulfah A S , Yerizon Y , Arnawa I M 
Published: May 2020

Abstract
Based on the preliminary research stage conducted in Public Junior High School (SMPN) 3 Muara Bungo, it is obtained that students’ reasoning ability is low and has yet achieved optimum result. This is due to inappropriate learning device available in which it is yet facilitating the students in improving their mathematics reasoning. Therefore, it is of vital importance to develop learning devices in the form of lesson plan (RPP) and student worksheet (LKPD) based on Realistic Mathematics Education (RME). RME provides more opportunities for the students to be more active in comprehending mathematics concept, think logically, and are able to draw a problem fine conclusion. The purpose of this research is to obtain valid, practical, and effective learning device based on RME for class VII of Junior High School. Research data were collected through observation, interview, document, questionnaire, and mathematical reasoning ability. The research participants are students of class VII SMPN 3 Muaro Bungo. This is a model development research. Plomp model was employed as the development model in this research. There are 3 phases on this model, namely, preliminary research phase, development or prototyping phase, and assessment phase. However, this research focuses only on preliminary research phase. It is including things required to design the expected learning device. The result of preliminary research is 1) students’ mathematical reasoning ability has optimum yet; 2) class VII students are in their transition from elementary school to junior high school level; hence mathematics learning requires concrete learning object or mathematics learning should be linked with their daily life; 3) RPP used provides less support to improve students ability in mathematical reasoning and it provides less opportunities for the students to be more active; 4) students expected that LKPD has to be detail, attractive, fun, and easy to comprehend.
The Development Mathematics Device with Problem Based Learning Model to Increase Mathematical Problem Solving Ability
Authors: Erawati N , Permana D 
Published: May 2020

Abstract
The issue of students’ difficulties in Mathematical problem solving should be resolved. One of the ways to overcome that problem is developing an appropriate learning tools. This case is expected to increase students’ ability in solving Mathematical problem. The type of this research was development research and used plom model in it. This research was consisted of three stages. They were prelimenary, development, and evaluation analysis. The result of this research was practical and effecctive Mathematics learning device. The analysis validation of lesson plan and students’ worksheet stated that they were valid. Besides, learning device was practical based on the result of analysis. The result was proven at interview guidelines, teacher’s response questionnaire, students’ response questionnaire and observation sheet in implementation of learning. The result of average percentage of practical score, teacher’s response got 88.99 %. Meanwhile, students’ response was 85.12 %. The result of practicality of learning device was strongly practical categories. Besides, learning device was effective to increase the ability of students in solving problem, especially at grade one of senior high school in Indonesia. Learning device that was developed had effective criteria. The result of students’ competency who are able to solve the Mathematic problem was 63.63 %. Theirscore were above Minimum Criteria of Mastery Learning.
The validity of mathematic learning device based on learning cycle to improve reasoning abilities of junior high school’s students
Authors: Zarista R H , Asmar A , Yerizon Y 
Published: May 2020

Abstract
The research problem in is the students’ mathematical reasoning ability is low, it is caused by learning device designed by the teacher does not yet support how to construct student’s mathematical reasoning ability. Through the development of this learning instrument, it is expected that students’ abilities in mathematical reasoning can increase. Learning tools are developed in the form of Lesson Plan and Student’s Worksheets. We use research Plomp’s model: initial research, prototype phase, and assessment phase. The results of preliminary analysis research, mathematical reasoning ability and student learning outcomes are still low. Teachers and students need learning tools based on Learning Cycle 5E with simple language and guide students to understand mathematics well. This study produced a valid mathematics learning device.
The developed hypothetical learning trajectory for integral topic based on realistic mathematics education
Authors: Sarvita L , Syarifuddin H 
Published: May 2020

Abstract
This article discussed the development of hypothetical learning trajectory for integral topic which based on realistic mathematics education for class XI Senior High School (SMA). The study focused on the phase of one to one evaluation by using observation. In this phase, we try it out to three students which divided into low, medium and high mathematics ability. Based on the observation, it can be concluded that the designed Hypothetical Learning Trajectory (HLT) can guide the students to achieve the expected purpose, that is the students can construct and discover the concept of integral by themselves based on their experience. Students use their reasoning ability to solve the given real problem so that their mathematical reasoning ability is improved.
Analysis of student error in completion analytical geometry problems in circle and sphere material
Authors: Asmar A , Delyana H 
Published: May 2020

Abstract
The purpose of this study is to identify student errors in solving the matter of circular material and spherical analytic geometry. The subject of this research is the 2nd semester students of the Mathematics Department at Universitas Negeri Padang. The type of this research is descriptive research. The type in this study is a qualitative approach. The data collection were obtained through documentation, tests and interviews. Data analysis was carried out in a qualitative descriptive. The results showed that the learning difficulties of students in the circle and sphere materials in terms of concepts, principles, and algorithms were: (a) Inability to remember, (b) Misclassification, (c) Error strategy, (d) Error calculation, (e) Difficulties in using algorithms. Teachers’ efforts to overcome student learning difficulties, namely: (a) provide training in varied questions (b) make a personal approach to students (c) repeat the questions that have been learned (d) provide direction to students to remember the formula learned (e) guiding and directing students to use the algorithm correctly. So that the teacher needs to use the right strategies and methods in teaching mathematical concepts.
Designing hypothetical learning trajectory for learning the importance of hypothesis testing
Authors: Syafriandi S , Fauzan A , Lufri L , Armiati A 
Published: May 2020

Abstract
This study aims to design student learning trajectories in learning the concept of the importance of hypothesis testing in inferential statistics. This study used design research. Design research consists of three stages, i.e. (1) preparing for the experiment; (2) teaching experiment; and (3) retrospective analysis. This study focused on the first stage, because the main purpose of this research was to develop a series of learning activities to learn the importance of hypothesis testing in inferential statistics. The result of this study is an hypothetical learning trajectory (HLT) to find the concept of the importance of hypothesis testing in inferential statistics. HLT was designed using a realistic mathematics education (RME) approach. The context used in designing HLT is to tossed a coin to determine which football team will kick off. Using iceberg, a series of learning trajectories are designed so that students are able to find out by themselves that testing hypotheses is an important concept in proving the assumption that coin is used in balance.