bluuebunny/crossref_metadata_2025_split huggingface dataset:
The effectiveness of the Predict Observe Explain (POE) Method and Time Token Arends for Students’ Concepts Understanding in The Social Studies Subject
Authors: Indraswati D , Gunawan G , Nursaptini N , Widodo A , Sutisna D 
Published: February 2021

Abstract
This study aims to determine the effectiveness of predict observe explain (POE) learning methods and time token Arends on the ability to understand concepts of elementary school students in social studies subjects. This research is a quasi-experimental research with pretest-posttest control group design. The population of this study were 40 students of class IV SDN 4 Cakranegara. Simple random sampling technique was used to determine the treatment class. Class IVa was treated with the time token Arends method and class IVb was treated with the predict observe explain (POE) method. The students were tested with 10 pretest questions and 10 posttest questions. Data analysis was performed using the normality test, homogeneity test, normalized gain, paired t-test, independent t-test, and the MANOVA test. The significance level used is 0.05. The results showed that the use of the POE method and time token Arends is not effective in increasing the concept understanding for grade IV students of SDN 4 Cakaranegara in social studies subjects.
Information Technology Factors Affecting Supply Chain Collaboration in Automotive Component Manufacturing in Indonesia
Authors: Gumilang Dicky 
Published: February 2021

Abstract
There is a growing need for collaborative supply chain management. This collaboration has been attracting the researchers due to their critical impact to improve business value. The use of information technology (IT) which is presently widely used in almost areas of business and engineering is considered prerequisites of today’s complex supply chain. Current study shows that a broad array of references in supply chain collaboration especially in identifying influencing factors on Information Technology are partial and limited. This study was aimed at reviewing a comprehensive understanding of dominant IT factors that influence successful supply chain management. Based on thorough analysis on the state of the art literature review, a proposed construct of influencing IT factors in supply chain collaboration is offered. Multiple linear regression technique is used to model the proposed construct. The result of analysis suggests that a further research on identifying factors and determining samples is required to model accuracy.
Statistical Analysis Relationship Between Behavior of Millenial Parents With Game Addictions in Children
Authors: Latubessy Anastasya 
Published: February 2021

Abstract
Game addiction has been declared as one of the mental disorders by WHO. According to research conducted by first author in previous studies stated that there is a negative correlation between the learning process of children with game addiction. This causes anxiety for parents. Today, technology that is developing rapidly is one of the challenges for parents, especially millennial parents. On the other hand, millennial parents also often use gadgets or play games on these gadgets. The parenting style applied by millennial parents to children can also affect children’s growth and development. Indirectly the child will follow what the parents do. The current research, analyzes the relationship between millennial parents’ care for game addiction in children. This study consisted of two variables, namely the millennial parent’s behavior and game addiction, each of which has aspects that are translated into a questionnaire. This study uses a qualitative approach. The method of correlation test analysis using Pearson Product Moment with the help of SPSS. The study concluded that, there was a relationship between behavior of millennial parents and game addiction in children. The relationship that occurs is a significant positive correlation where, the higher the behavior style of millennial parents, the higher the game addiction in children. With the correlation coefficient between the parental millennial behavior and game addiction in children amounting to 0.366 with sig. = 0.023 (p <0.05).
To the question of non-harmonic force oscillations and moment by the vibration generator
Authors: Vasiliev A M , Bredihin S A , Andreev V K 
Published: February 2021

Abstract
In the article, a vibration exciter is considered, containing four unbalances rotating around parallel axes, the axis of rotation of which are located on a common base, rigidly connected with the working body. The imbalances rotate uniformly and in pairs have the same angular velocity in the opposite direction. The conditions are formulated to ensure excitation of a rectilinearly oscillating force and rotation conditions by the vibration exciter. The purpose of the created dibaleans is to inform the working body of the machine of non-harmonic oscillations. The dependence of the force excited by the vibration exciter on the angle of rotation of the unbalance is determined. As a result of the studies, it was found that a centrifugal vibration exciter with four unbalances rotating in pairs with the same angular velocities can be used depending on the mutual phasing of the unbalances to excite non-harmonic oscillations of either force or moment.
A File Distribution Mechanism based on Netty Communication Framework
Authors: Huang Yingzhen , Liu Zheyuan , Qian Rongxin , Gu Weikai , Guo Zhongyi 
Published: February 2021

Abstract
The efficiency of file distribution in large-scale data processing platform is essential besides system security. Traditional CIFS file sharing method cannot meet the requirement due to its lack of security and ability to distribute fragile files. This paper introduces an innovated file distribution mechanism based on Netty framework. It utilizes zero-copy mode provided by Netty, along with multi-thread asynchronous communication. Experiment shows that it outperforms CIFS in real-time applications.
Fabrication and Evaluation of the Mechanical Behavior of Geopolymer Compounds Using Waste from the Mining and Construction Industry
Authors: Huamán-Mamani FA , Mayta-Ponce DL , Rodríguez-Guillén GP 
Published: February 2021

Abstract
Geopolymers are lately being considered a group of revolutionary materials, due to their good mechanical properties, chemical stability, fire resistance and diversity of applications where they can be used. For the synthesis of geopolymers, a great variety of types of natural and artificial raw materials (residues from other industries) can be used, which allows obtaining materials with very specific applications. Two of the most important industries in Peru are also those that generate greater environmental degradation, mainly due to the waste they generate. The mining industry has a negative impact on the environment, generating a large amount of inorganic waste, while the construction industry does the same, generating large amounts of demolition waste. Both, mining and demolition waste, constitute a serious environmental problem, since currently they are only deposited without any alternative use. Therefore, our research proposes the use of geopolymeric technology for the use of mining and demolition waste in the manufacture of geopolymeric concrete with mechanical strengths similar to that of Portland cement concrete.
Influence of the Activating Solution and Aggregates in the Physical and Mechanical Properties of Volcanic Ash Based Geopolymer Mortars
Authors: Calderón Nataly , Vargas María , Almirón Jonathan , Bautista Asunción , Velasco Francisco , Tupayachy-Quispe Danny 
Published: February 2021

Abstract
The physical, mechanical and microstructural properties of volcanic ash based geopolymer mortars by alkaline activation (with NaOH and Na(OH) + Na2SiO3 solutions) using different aggregates (Peruvian sand and standard sand) were studied. For the synthesis of geopolymers, a liquid:solid ratio of 0.1 and an ash:sand ratio of 1:1 were selected, and 25% of sodium silicate was added to the Na(OH) solution. The samples were compacted, toughened and cured at 80°C for 48 h. The dissolution of volcanic ash particles and the formation of the geopolymeric matrix increase with Na(OH)+Na2SiO3 solution and standard sand while the local sand promotes better geopolymerization with NaOH solution. The compression strength of volcanic ash based geopolymer mortar reported values from 18.93 MPa to 23.28 MPa at 6 months of curing, which determines the use of these geopolymers as a construction material.
Application of Glass and Fan Shells to a Clay Soil to Increase its Mechanical Properties
Authors: Jara Heiner Lopez , Barrionuevo Brandon Bravo , Fernández Díaz Carlos 
Published: February 2021

Abstract
Improving the mechanical properties of a clayey soil is one of the best options to avoid future structural failures in buildings and is cheaper than replacing all the material. Therefore, this article proposes the use of recycled glass and fan shells as reinforcement materials. This article presents an experimental study to evaluate the mechanical properties of a pure and mixed soil. The clay soil was mixed with 7% of glass (PV) and with 3%, 6%, 10%, 12% and 15% of Fan Shells (PCA) duly crushed and passed through sieve #100. Tests of sieve granulometry, sedimentation granulometry, Atterberg limits, modified proctor and drained consolidated direct cut were performed. This allowed comparing all the data obtained and defining the optimal percentage of the mixture in which the clay improves its mechanical properties. According to the tests carried out, the proportion that has 7% glass and 6% Fan Shells has better results because there is an improvement in its dry density from 1,784 g / cm3 to 1,847 g / cm3, its moisture content increases from 9.4% to 12.1%. In addition, its friction angle improves from 28.9 ° to 32 ° and cohesion from 0.05 kg / cm2 to 0.1 kg / cm2. These results verify that the properties of the clay soil are improved.
A Qualitative Study to Identify Characteristics of a Desirable Training Program for Prevention of Occupational Skin Disease
Authors: Zack Bethany , Arrandale Victoria H , Holness D Linn 
Published: February 2021

Abstract

Background
Training and education may be effective strategies for the prevention of work-related contact dermatitis. While there is some information in the literature related to skin-specific training experiences, there is very little information available on workers’ preferences related to content and format and to barriers and facilitators to training.

Objectives
To understand workers’ experiences and preferences for workplace training and barriers and facilitators to training.

Methods
Following ethics approval, 24 patients with work-related contact dermatitis participated in semi-structured interviews obtaining information on training experiences, perceived training effectiveness, desired training characteristics, and barriers and facilitators to training. An inductive thematic analysis was used to identify themes.

Results
Though many workers had received general workplace health and safety training, none reported training about skin exposure and disease prevention. Examples of what the workers perceived as good training included first aid training, while Workplace Hazardous Materials Information System training was felt to be ineffective. Desired content of training for preventing skin exposures included information on the hazards, short- and long-term health impacts, and potential symptoms and personal protective equipment. They desired multi-modal presentation (e.g. in-person and online supplement), hands-on training with visual content and suggested the use of personal stories and negative messaging. Training that could be applied outside the workplace was also valued. Barriers and facilitators to implementation included factors related to the training program itself, the organization, and the regulatory landscape.

Conclusions
These findings can help to shape more effective workplace training programs for skin protection.
Intraarterial Degradation of Calcium Hydroxylapatite Using Sodium Thiosulfate – An In Vitro and Cadaveric Study
Authors: Yankova Mariya , Pavicic Tatjana , Frank Konstantin , Schenck Thilo L , Beleznay Kate , Gavril Diana L , Green Jeremy B , Voropai Daria , Robinson Deanne Mraz , Cotofana Sebastian 
Published: February 2021

Abstract

Background
The most severe complications following soft tissue filler injections result from the intraarterial administration of the filler product. Although hyaluronic acid–based filler can be trans-arterially dissolved with hyaluronidase, no information is available on calcium hydroxylapatite (CaHA)-based fillers.

Objective
The authors sought to test whether CaHA-based fillers can be trans-arterially dissolved by sodium thiosulfate (STS) when evaluated in cadaveric and in vitro models.

Methods
Human cadaveric facial arterial segments were each filled with 0.2 cc of commercially available CaHA product and submerged for 24 hours in 4 different STS-containing solutions: 10 cc STS (300 mg/cc) (pure, 1:1 dilution, 1:2 dilution), 0.9% saline and 10 cc STS (300 mg/cc), and 300 IU (bovine) hyaluronidase in a 1:1 ratio.

Results
Intraarterial CaHA was detected in human facial artery segments after 24 hours independent of the STS concentration employed. Submerging the arterial segments in STS (300 mg/cc) and 300 IU (bovine) hyaluronidase (1:1 ratio) also did not dissolve the intraarterial CaHA product. Gray scale analyses did show, however, that increasing concentrations of STS resulted in increased disintegration of CaHA in an in vitro experimental setting.

Conclusions
The results of this study indicate that STS is limited in its potential to dissolve intraarterial CaHA of cadaveric human facial arteries, despite the fact that it appears effective when in direct contact with the CaHA. Adverse events caused by intraarterial administration of CaHA-based fillers still lack a suitable antidote.
Quality of Patient-Reported Outcome Studies Utilizing the BREAST-Q: A Systematic Review
Authors: Har-Shai Lior , Ofek Sar-El , Brandstetter Addy , Cohen Keren H , Shay Tamir , Amir Avraham , Ad-El Dean D 
Published: February 2021

Abstract

Background
Patient-reported outcome (PRO) studies are essential in the assessment of surgical procedures in plastic surgery. One accepted and validated questionnaire is the BREAST-Q.

Objectives
The aim of this study was to assess the quality of PRO studies in plastic surgery utilizing the BREAST-Q questionnaire.

Methods
This study involved 2 steps: (1) a systematic review of 23 key criteria assessing the quality of survey research in studies utilizing the BREAST-Q that were published between 2015 and 2018; (2) a review of current guidance for survey research in journals related to plastic surgery and breast surgery which were included in the systematic review.

Results
Seventy-nine studies were included in the systematic review. Many key criteria were poorly reported: 51.9% of the studies did not provide a defined response rate and almost 90% did not provide a method for analysis of nonresponse error; 67.1% lacked a description of the sample’s representativeness of the population of interest, and 82.3% did not present a sample size calculation. The methods used to analyze data were not described in 11.4% of the papers; in 27.8% the data analysis presented could not allow replication of the results. Of the 16 journals in the fields of plastic surgery and breast surgery for which the “instructions to authors” were reviewed, 15 (93.7%) did not provide any guidance for survey reporting.

Conclusions
The majority of key criteria are underreported by authors publishing their survey research in peer-reviewed journals in the fields of plastic and breast surgery. There is an urgent need to construct well-developed reporting guidelines for survey research in plastic surgery, and particularly in breast surgery.

Level of Evidence: 4
Varietal differences in flavonoid and antioxidant activity in Japanese soybean accessions
Authors: Arifin Hana Akari , Hashiguchi Takuyu , Nagahama Kiyoko , Hashiguchi Masatsugu , Muguerza Melody , Sakakibara Yoichi , Tanaka Hidenori , Akashi Ryo 
Published: February 2021

ABSTRACTSoybean seeds contain many antioxidants, including flavonoids and other phytochemicals. Isoflavone is a phytoestrogen that mimics estrogenic effects on target tissues and also exerts antioxidant activity by sequestering free radicals. Despite many cultivars developed to date, varietal differences in flavonoid content and antioxidant activity in Japanese soybean accessions remain less well characterized. Here, we evaluated the seed content of isoflavones, total flavonoids, and total phenolics in 26 soybean accessions. Next, the antioxidant activity of each accession was examined using antioxidant responsive element (ARE) linked to a luciferase reporter in human HepG2 stable cells. The relative ARE luciferase activity rate of all soybean accessions varied up to 4-fold which ranged from 1.00 to 4.02; and 22 accessions exhibited significant antioxidant activities. Correlation analysis indicated that the level of total isoflavone moderately correlated with antioxidant activity.
Downregulation of IRAK3 by miR-33b-3p relieves chondrocyte inflammation and apoptosis in anin vitroosteoarthritis model
Authors: Tao Tao , Zhang Yunkun , Wei Hui , Heng Ke 
Published: February 2021

ABSTRACTInterleukin-1 receptor-associated kinase-3 (IRAK3) has a distinctive role in regulating inflammation. However, the functional role of IRAK3 and regulatory mechanism underlying the pathogenesis of osteoarthritis (OA) remain unclear. Here, we first found that IRAK3 was upregulated, while miR-33b-3p was downregulated in the cartilage of OA patients and IL-1β-induced CHON-001 cells. IRAK3 was confirmed as the direct target of miR-33b-3p and negatively regulated by miR-33b-3p. There was an inverse correlation between IRAK3 mRNA expression and miR-33b-3p expression in OA cartilage tissues. The in vitro functional experiments showed that miR-33b-3p overexpression caused a remarkable increase in viability, a significant decrease in inflammatory mediators (IL-1β and TNF-α), and apoptosis in IL-1β-induced CHON-001 cells. Importantly, IRAK3 knockdown imitated, while overexpression reversed the effects of miR-33b-3p on IL-1β-induced inflammation and apoptosis in CHON-001 cells. Collectively, miR-33b-3p significantly alleviated IL-1β-induced inflammation and apoptosis by downregulating IRAK3, which may serve as a promising target for OA.
Taxonomy and phylogenetics ofAlliumsectionDecipientia(Amaryllidaceae): morphological characters do not reflect the evolutionary history revealed by molecular markers
Authors: Friesen Nikolai , Smirnov Sergei V , Leweke Mathias , Seregin Alexey P , Fritsch Reinhard M 
Published: February 2021

AbstractPhylogenetic and phylogeographic patterns in Allium section Decipientia (subgenus Melanocrommyum) were analysed, including most species of this section and representative species of most other sections of the monophyletic Allium subgenus Melanocrommyum. We constructed a molecular phylogenetic tree based on predominantly non-coding sequences from nuclear ribosomal RNA and four plastid regions. In Allium section Decipientia, 2n = 16 and 2n = 20 chromosomes were confirmed and, in part, newly reported. All plants with 2n = 20 form a clade that is sister to the European A. decipiens and A. quercetorum with 2n = 16 in the ITS analysis and are genetically distant from the Eurasian steppe species with 16 chromosomes, A. tulipifolium and A. robustum. The plastid analysis does not reveal a clear relationship between these three monophyletic groups. The karyotype of A. tulipifolium is similar to those of other members of subgenus Melanocrommyum, but only preliminary chromosomal dimensions could be presented for the species with 2n = 20 chromosomes. The latter group comprises A. grande, A. subscabrum, A. viridulum and the newly described taxa A. koksuense and A. lepsicum. Allium tulipifolium and A. robustum have been placed in a new section Tulipifolia, and all species with 2n = 20 have been placed in a new subsection, Viceniprason, of section Decipientia. A nomenclatorial conspectus and a key for determination of the members of Allium sections Decipientia and Tulipifolia are also provided. According to the time divergence estimation, subgenus Melanocrommyum diversified c. 25 Mya in the late Oligocene. The split between most species of the section Decipientia and other taxa in this subgenus was estimated as early Miocene, which furthermore diversified into two sister clades in mid Miocene. Allium decipiens split off from the ancestors of the 2n = 20 species also in the mid Miocene. Further branching in this species group is of rather young age, and occurred within the last 6 Myr (late Miocene to late Pliocene and Pleistocene).
Continental palynomorphs from the Dabaa Formation, North-Western Desert, Egypt: a contribution to the reconstruction of the vegetation on the southern shores of the Tethys Ocean during the Early Oligocene
Authors: El Atfy Haytham , El Beialy Salah Y , El Khoriby Essam M , Uhl Dieter 
Published: February 2021

AbstractThe Eocene–Oligocene transition period was marked by one of the most abrupt and severe global environmental changes in the Cenozoic record, and this had a marked influence on the evolution of a number of animal and plant groups and entire ecosystems. This study documents continental palynomorphs recovered from the sedimentary rocks of the Dabaa Formation (Qattara area, North-Western Desert, Egypt) located on the southern shore of the Tethys Ocean and dated as Late Eocene–Early Oligocene. The botanical affinities, (phyto)ecology and distribution of the vegetation during the Eocene–Oligocene of the study area are discussed. The recorded assemblages are well preserved and comprise diverse lineages of algae, spores and pollen. They were identified, illustrated and assigned to 46 families encompassing chlorococcalean algae, lycopods, ferns, gymnosperms and angiosperms. The studied assemblages demonstrate the development of tropical vegetation, including tropical deciduous forest, grassland and (semi-)arid tropical shrubland, in which angiosperms were one of the main representatives; additionally open, drier habitats might have existed in the hinterland. Our data have been combined with previous megafossil and palynological evidence to assess and refine vegetation changes during the Early Oligocene time window in Egypt and across North Africa. Vegetation was a mosaic of different vegetation belts that ran more-or-less parallel to the coastline of the Tethys Ocean under the variable geographical influence of lagoons and streams. It is assumed that the belt of tropical forest along the coast of the Tethys Ocean narrowed during the Oligocene in parallel to climatic deterioration following the Eocene–Oligocene boundary, which may have also led to the fractionation of forest habitats.