bluuebunny/crossref_metadata_2025_split huggingface dataset:
Chaotic Butterfly Optimization Algorithm Applied to Multi-objective Economic and Emission Dispatch in Modern Power System
Authors: Das Soumya Ranjan , Sahoo Arun Kumar , Panigrahi Tapas Kumar , Behera Aurobinda 
Published: August 2020

Aims :
To optimize the economic and emission dispatch of the thermal power plant.

Background:
Considering both the economic and environmental aspects, a combined approach had made to attain a solution
is known as the combined economic and emission dispatch problem. The CEED problem is a nonlinear bi-objective problem with conflicting behaviour with all the practical constraints.

Objective:
A new optimization method is improvised by applying the chaotic mapping to the butterfly optimization algorithm. This method is applied to the Combined Economic and Emission Dispatch (CEED) problem for optimizing consumed fuel cost and produced environment pollutant.

Methods:
Improved Chaotic Butterfly algorithm is applied to the optimization problem to optimize combined economic and
emission dispatch.

Result :
The proposed technique is tested for four different test systems with various practical constraints like valve point
loading, ramp rate limit and prohibited operating zones. The obtained results from the chaotic butterfly optimization algorithm (CBOA) are compared with other optimization techniques provide an optimum solution for CEED problem.

Conclusion :
Considering the environmental impact the novel metaheuristic swarm intelligence technique is applied with
conflict of interest. Different test systems, with different practical operational constraints like valve-point loading, prohibited operating zones and ramp rate limits and emission dispatch have been analyzed to validate the implementation of the
proposed algorithm in real life CEED problem situations.
Communication Cost Aware Resource Efficient Load Balancing (CARELB)
Framework for Cloud Datacenter
Authors: Saxena Deepika , Singh Ashutosh Kumar 
Published: August 2020

Background:
Load balancing of communication-intensive applications, allowing efficient resource utilization and minimization of power consumption is a challenging multi-objective virtual machine (VM) placement problem. The communication among inter-dependent VMs, raises network traffic, hampers cloud client’s experience and degrades overall performance, by saturating the network.

Introduction:
Cloud computing has become an indispensable part of Information Technology (IT), which supports the backbone of digitization throughout the world. It provides shared pool of IT resources, which are: always on, accessible from anywhere, at anytime and delivered on demand, as a service. The scalability and pay-per-use benefits of cloud computing has driven the entire world towards on-demand IT services that facilitates increased usage of virtualized resources. The rapid growth in the demands of cloud resources has amplified the network traffic in and out of the datacenter. Cisco Global Cloud Index predicts that by the year 2021, the network traffic among the devices within the datacenter will grow at Compound Annual Growth Rate (CAGR) of 23.4%

Methods:
To address these issues, a communication cost aware and resource efficient load balancing (CARE-LB) framework is presented, that minimizes communication cost, power consumption and maximize resource utilization. To reduce the communication cost, VMs with high affinity and inter-dependency are intentionally placed closer to each other. The VM placement is carried out by applying the proposed integration of Particle Swarm Optimization and non-dominated sorting based Genetic Algorithm i.e. PSOGA algorithm encoding VM allocation as particles as well as chromosomes.

Results:
The performance of proposed framework is evaluated by the execution of numerous experiments in the simulated datacenter environment and it is compared with the state-of-the-art methods like, Genetic Algorithm, First-Fit, Random-Fit and Best-Fit heuristic algorithms. The experimental outcome reveals that the CARE-LB framework improves 11% resource utilization, minimize 4.4% power consumption, 20.3% communication cost with reduction of execution time up to 49.7% over Genetic Algorithm based Load Balancing framework.

Conclusion:
The proposed CARE-LB framework provides promising solution for faster execution of data-intensive applications with improved resource utilization and reduced power consumption.

Discussion:
In the observed simulation, we analyze all the three objectives, after execution of the proposed multi-objective VM allocations and results are shown in Table 4. To choose the number of users for analysis of communication cost, the experiments are conducted with different number of users. For instance, for 100 VMs we choose 10, 20,...,80 users, and their request for VMs (number of VMs and type of VMs) are generated randomly, such that the total number of requested VMs do not exceed number of available VMs.
Revisión de expertos para medir la calidad de objetos de aprendizaje
Authors: Duque Nestor 
Published: August 2020

Los Objetos de Aprendizaje (OAs) han originado un nuevo modelo conceptual para organizar el contenido en contextos educativos basados en e-learning. Debido a su importante aporte a los procesos de enseñanza/aprendizaje, se requiere de esfuerzos que permitan establecer estrategias para determinar y asegurar su calidad.La calidad en este contexto se entiende como el cumplimiento de un conjunto de características deseables del OA, desde diferentes dimensiones, tales como educativa, de contenido, estética, funcional y de metadatos. Una propuesta para revisión de OAs por parte de expertos, es presentada en el presente trabajo, donde se define un conjunto de 8 criterios orientados a obtener una visión general del OA, y que permitirán tomar decisiones frente a estrategias para el aseguramiento de la calidad de los recursos. Esta propuesta fue aplicada en la evaluación de OAs disponibles a través de la federación FROAC, evidenciando problemas de calidad de estos recursos, y con ello la necesidad de seguir trabajando en mejorar los procesos de construcción de estos recursos educativos.
A Serious Game on the First-Aid Procedure in Choking Scenarios: Design and Evaluation Study
Authors: Boada Imma , Rodriguez Benitez Antonio , Thió-Henestrosa Santiago , Soler Josep 
Published: August 2020

Background
Choking is one of the causes of unintentional injury death. Gaining the knowledge of the first-aid procedure that has to be applied in case of choking can increase the chances of survival of persons with choking. Serious games can be a good channel for educating people about choking scenarios and the actions to be taken to save the persons with choking.

Objective
The objective of this study is to present and evaluate the effectiveness of a serious game designed to prevent choking and to promote the first-aid procedure that needs to be applied in case of choking.

Methods
In this study, we present a serious game as a set of minigames that reproduces the main steps of the protocol for the first-aid performed in choking. In the proposed game, the player acquires the role of a helper who has to save the person in a choking emergency by applying the main steps of the protocol. Time and score restrictions are imposed to pass each minigame. To test this game, we performed a pilot study with 48 high school students. Different tests were performed to assess the students’ preferences and their knowledge on choking before and after playing the proposed game. The obtained results were analyzed using Mann-Whitney U test when a grade variable was involved and by using Fisher exact test when 2 categorical variables were involved.

Results
The findings of our study showed that the players enjoyed the game. No statistical differences were detected when considering the gender of the player, their preferences for video games, or their previous experience in choking emergencies. By comparing the knowledge of these students before and after playing the game, we found that all the indicators of the knowledge about how to act in case of a choking emergency were improved through this serious game.

Conclusions
The findings of our study show that the proposed game is a good strategy for promoting and teaching first-aid procedures in choking emergencies to nonexperts in this field.
A Mobile Health Intervention for Adolescents Exposed to Secondhand Smoke: Pilot Feasibility and Efficacy Study
Authors: Nardone Natalie , Giberson Jeremy , Prochaska Judith J , Jain Shonul , Benowitz Neal L 
Published: August 2020

Background
Secondhand smoke (SHS) exposure in children and adolescents has adverse health effects. For adolescents of lower socioeconomic status (SES), exposure is widespread, evidenced in the measurement of urinary cotinine, a major metabolite of nicotine. Direct intervention with exposed children has been proposed as a novel method, yet there is minimal evidence of its efficacy. Combining this approach with a mobile health (mHealth) intervention may be more time and cost-effective and feasible for adolescent populations.

Objective
In this pilot study, we assessed the feasibility and preliminary evidence of efficacy of a 30-day text message–based mHealth intervention targeted at reducing SHS exposure in adolescent populations of low SES.

Methods
For the study, 14 nonsmoking and nonvaping participants between the ages of 12-21 years exposed to SHS were enrolled. The intervention consisted of a daily text message sent to the participants over the course of a month. Text message types included facts and information about SHS, behavioral methods for SHS avoidance, or true-or-false questions. Participants were asked to respond to each message within 24 hours as confirmation of receipt. Feasibility outcomes included completion of the 30-day intervention, receiving and responding to text messages, and feedback on the messages. Efficacy outcomes included a reduction in urinary cotinine, accuracy of true-or-false responses, and participants’ perceptions of effectiveness.

Results
Of the 14 participants that were enrolled, 13 completed the intervention. Though not required, all participants had their own cell phones with unlimited text messaging plans. Of the total number of text messages sent to the 13 completers, 91% (372/407) of them received on-time responses. Participant feedback was generally positive, with most requesting more informational and true-or-false questions. In terms of efficacy, 54% (6/11) of participants reduced their cotinine levels (however, change for the group overall was not statistically significant (P=.33) and 45% (5/11) of participants increased their cotinine levels. Of the total number of true-or-false questions sent across all completers, 77% (56/73) were answered correctly. Participants’ ratings of message effectiveness averaged 85 on a scale of 100.

Conclusions
In this pilot study, the intervention was feasible as the majority of participants had access to a cell phone, completed the study, and engaged by responding to the messages. The efficacy of the study requires further replication, as only half of the participants reduced their cotinine levels. However, participants answered the majority of true-or-false questions accurately and reported that the messages were helpful.
Effects of Avatar Perspective on Joint Excursions Used to Play Virtual Dodgeball: Within-Subject Comparative Study
Authors: van der Veen Susanne M , Stamenkovic Alexander , Applegate Megan E , Leitkam Samuel T , France Christopher R , Thomas James S 
Published: August 2020

Background
Visual representation of oneself is likely to affect movement patterns. Prior work in virtual dodgeball showed greater excursion of the ankles, knees, hips, spine, and shoulder occurs when presented in the first-person perspective compared to the third-person perspective. However, the mode of presentation differed between the two conditions such that a head-mounted display was used to present the avatar in the first-person perspective, but a 3D television (3DTV) display was used to present the avatar in the third-person. Thus, it is unknown whether changes in joint excursions are driven by the visual display (head-mounted display versus 3DTV) or avatar perspective during virtual gameplay.

Objective
This study aimed to determine the influence of avatar perspective on joint excursion in healthy individuals playing virtual dodgeball using a head-mounted display.

Methods
Participants (n=29, 15 male, 14 female) performed full-body movements to intercept launched virtual targets presented in a game of virtual dodgeball using a head-mounted display. Two avatar perspectives were compared during each session of gameplay. A first-person perspective was created by placing the center of the displayed content at the bridge of the participant’s nose, while a third-person perspective was created by placing the camera view at the participant’s eye level but set 1 m behind the participant avatar. During gameplay, virtual dodgeballs were launched at a consistent velocity of 30 m/s to one of nine locations determined by a combination of three different intended impact heights and three different directions (left, center, or right) based on subject anthropometrics. Joint kinematics and angular excursions of the ankles, knees, hips, lumbar spine, elbows, and shoulders were assessed.

Results
The change in joint excursions from initial posture to the interception of the virtual dodgeball were averaged across trials. Separate repeated-measures ANOVAs revealed greater excursions of the ankle (P=.010), knee (P=.001), hip (P=.0014), spine (P=.001), and shoulder (P=.001) joints while playing virtual dodgeball in the first versus third-person perspective. Aligning with the expectations, there was a significant effect of impact height on joint excursions.

Conclusions
As clinicians develop treatment strategies in virtual reality to shape motion in orthopedic populations, it is important to be aware that changes in avatar perspective can significantly influence motor behavior. These data are important for the development of virtual reality assessment and treatment tools that are becoming increasingly practical for home and clinic-based rehabilitation.
BRINE SHRIMPS LETHALITY TEST OF ETHANOL EXTRACT AND GAS CHROMATOGRAPHY-MASS SPECTROMETRY ANALYSIS OF ETHYL ACETATE FRACTION OF BLIGHIA SAPIDA
Authors: MB ADEKOLA , JO AREOLA , OV ORIYOMI , JT APATA , OE APALOWO , AF ADESINA , OO BABALOLA 
Published: August 2020

Objective: The objective of the study was to evaluate brine shrimp lethality of Blighia sapida stem-bark extract and its fractions and identify the bioactive constituents in the ethyl acetate fraction (EAF) using gas chromatography-mass spectrometry (GC-MS) technique.
Methods: The ethanol extract (EE) and its fractions were subjected to lethality assay, and GC-MS analysis of EAF was carried out.
Results: The lethality test showed a concentration-dependent mortality rate in the brine shrimp nauplii for the EE and its fractions. GC-MS analysis of EAF of the extract revealed the existence of 13 peaks of the GC-MS chromatogram with only one prominent compound, n-hexadecanoic acid (peak area of 10.13%).
Conclusion: The result revealed the presence of 13 bioactive components in the EAF of the extract, the majority of which have been reported for different biological activities, hence, justifies the use of the plant in the treatment and management of different diseases ethnomedicinally.
IN VITRO ANTI-INFLAMMATORY AND ANTI-ARTHRITIC ACTIVITY OF ETHANOLIC EXTRACT OF LEAVES OF PYRENACANTHA VOLUBILIS (EEPV)
Authors: P ANJALI , R VIMALAVATHINI , S KAVIMANI 
Published: August 2020

Objectives: The study was undertaken to evaluate the in vitro anti-inflammatory and anti-arthritic activity of the ethanolic extract of leaves of Pyrenacantha volubilis (EEPV) using human red blood cells (HRBCs) membrane stabilization and protein denaturation methods.
Methods: In the present study, the in vitro anti-inflammatory and anti-arthritic activity of EEPV was carried out using HRBC membrane stabilization by hypotonicity-induced hemolysis and protein denaturation using egg albumin methods at various concentrations (100, 200, 400, 800, and 1000) of EEPV. Diclofenac sodium was used as reference standard.
Results: P. volubilis was effective in inhibiting HRBC membrane stabilization and protein denaturation in a dose-dependent manner and was comparable to the standard drug diclofenac sodium.
Conclusion: The study suggests that P. volubilis has potential anti-inflammatory and anti-arthritic activity.
SOCIODEMOGRAPHIC AND COMORBIDITY PROFILES OF MIGRAINE PATIENTS: AN OUTPATIENT-BASED STUDY IN A TERTIARY CARE HOSPITAL
Authors: BANDAY MUDDASIR , WANI MAQBOOL , FAROOQ UMER , PARRA BILAL , RATHER YOUNIS 
Published: August 2020

Objective: Migraine is a primary headache disorder. The study was undertaken to assess correlation between sociodemographic characteristics of migraineurs with their various comorbidities so as to determine most important factors influencing their comorbidity profile.
Methods: A prospective study was conducted between June 2018 –April 2020 in 323 patients suffering from migraine in out-patient department of Neurology. Patients were labeled as migraine on the basis of Simplified Diagnostic Criteria for Migraine. A structured questionnaire was used for evaluation of sociodemographic variables and evidence based approach was adapted to fill psychiatric and comorbidity profiles of patients.
Results: In 323 patients of migraine males were 30 (9.3%) and females 293 (90.7%). Mean age of males is 38.80±17.53 years and of females 35.38±13.29 years, (p=0.307). Most of them were in 21-30 years age group followed by 31-40 years Majority of patients were from district Srinagar followed by Ganderbal. Housewives formed major group of patients followed by students It was seen more in the illiterate class than in literates. 57% patients belonged to lower middle class. Psychiatric comorbidities including anxiety,depression and physical comorbidities like hypertension, hypothyroidism and comorbid pains were common associations. Comorbidities have been compared with mean age of the patients and it was found that psychiatric comorbidities, neuropathic pain, hypothyroidism, hypertension, Type 2 DM, comorbid pains and PCOD were statistically significant, (p=≤0.05).
Conclusion: Most common comorbidities associated with migraine are anxiety, depression, neuropathic pain, hypothyroidism, hypertension, Type 2 DM and comorbid pain. Comorbidities have direct impact on nature of treatment protocol and need to be addressed to achieve outcome based treatment.
Calidad de servicio y valor percibido como antecedentes de la satisfacción de los clientes de las empresas de telecomunicaciones en Colombia
Authors: Henao Colorado Laura Cristina 
Published: August 2020

A pesar de las diferentes críticas que ha recibido el modelo SERVQUAL propuesto por Zeithaml, Parasuraman y Berry, este aún sigue vigente y ha permitido mostrar que la calidad de servicio es antecedente de la satisfacción de los clientes. Para el sector de las telecomunicaciones en Colombia, donde las empresas son pocas, pero con una alta imitación de ofertas, el entender si sus clientes están satisfechos, cómo perciben los servicios y qué valoran más de ellos, se ha vuelto en factores de competitividad. Es así como el presente estudio, propone un modelo que explica cómo influyen las expectativas (EXP), la calidad de servicio (QS), y el valor percibido (VP) en la satisfacción (SAT) de los clientes de las empresas de telecomunicaciones fijas en Colombia. Se obtuvieron datos de 324 usuarios en las principales ciudades del país, con un cuestionario virtual. Las 5 hipótesis sugeridas se probaron utilizando modelos de ecuaciones estructurales por PLS-SEM. Los hallazgos evidencian la pertinencia del SERVQUAL para explicar la calidad de servicio y que la satisfacción está influenciada directamente por dicho constructo y el valor percibido. Esta investigación es una contribución de la literatura dada la poca investigación sobre estos constructos en dicho sector y país.
Synthesis, Characterization and Antioxidant Activity of 2-Aryl Benzimidazole Derivatives
Authors: Singh Vineet Kumar , Parle Amrita 
Published: August 2020

Objective: To synthesize benzimidazole derivatives, characterize them by 1HNMR and ATIR techniques and evaluate their antioxidant activity.
Methods: In the present study 19 benzimidazole derivatives were synthesized by reacting O-phenylenediamine as the primary reactant with different aromatic aldehydes and benzoic acids. Reactions were monitored using thin layer chromatography technique, and the newly synthesized derivatives were characterized by ATIR and 1HNMR techniques. The antioxidant assay was performed using ABTS [2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid)] method and DPPH [2,2-diphenyl-1-picrylhydrazyl] method.
Results: Compounds BNZ-1, BNZ-2, BNZ-3, BNZ-9, and BNZ-10 showed comparable antioxidant activity to ascorbic acid at higher dose.
Conclusion: The synthesized benzimidazole derivatives have significant radical scavenging potential.
Antimicrobial and Antioxidant Activity of Pomegranate Peel Extracts Obtained by Sequential Extraction Method
Authors: Abdealsiede Missa Mohammed Saleh , Alrasheid Ayat Ahmed , Ali Omar Mei Musa , Elbashir Abdalla Ahmed 
Published: August 2020

Punica granatum L. (Pomegranate) is a plant belongs to Lythraceae family. The objective of this study was to evaluate the antimicrobial activity of petroleum ether, chloroform , acetone, ethyl acetate and ethanol extracts from the peel fruit of Punica granatum against standard microorganism. This plant has been used as a traditional treatment for several diseases such as microbial infections. Extracts were evaluated for their effectiveness against four bacterial strains including both Gram-positive (Bacillus subtilis and Staphylococcus aureus) and Gram-negative (Escherichia coli and Pseudomonas aeruginosa) bacteria as well as fungal species (Candida albicans and Aspergillus niger) using disc diffusion method. The ethyl acetate, acetone and petroleum ether extracts showed higher antibacterial activity than the chloroform and ethanol extracts with inhibition zone ranged between (7-16 mm). The petroleum ether and chloroform extracts showed the higher antifungal activity compared with the other extracts, the diameter inhibition zone ranged between (11-16 mm). The antioxidant potential of peel extracts was determined on the basis of their scavenging activity of the stable 1, 1-diphenyl-2-picryl hydrazyl (DPPH) free radical and 2,2'azino-bis(ethyl benzthiazoline -6-sulfonic acid (ABTS+). All extracts showed high antioxidant activity . The highest result of antioxidant activity by DPPH scavenging assay was in acetone extract (89.40%), but high result by ABTS in ethanol extract (72.07%).
KEYWORDS: