bluuebunny/crossref_metadata_2025 huggingface dataset:
PENGARUH PENGUNGKAPAN RELATIONAL CAPITAL PADA KINERJA KEUANGAN PERUSAHAAN (STUDI EMPIRIS PADA PERUSAHAAN HIGH-IC INTENSIVE INDUSTRIES YANG TERDAFTAR DI BURSA EFEK INDONESIA)
Authors: Daat Sylvia Christina
Published: February 2020

Abstrak: Pengaruh Pengungkapan Relational Capital pada Kinerja Keuangan Perusahaan (Studi Empiris pada perusahaan High-IC Intensive Industries yang Terdaftar di Bursa Efek Indonesia) Penelitian ini dimotivasi oleh berkembangnya arah penelitian akuntansi pada isu-isu terkait aset tidak berwujud (intangible capital), secara khusus intellectual capital (modal intelektual) yang dipicu oleh revolusi dalam teknologi informasi, pentingnya pengetahuan dan bisnis berbasis pengetahuan (knowledge-based business), serta timbulnya inovasi sebagai pola penentu utama keunggulan kompetitif perusahaan. Informasi modal intelektual merupakan salah satu informasi yang dibutuhkan oleh investor karena informasi tentang modal intelektual dapat membantu investor untuk memprediksi kinerja perusahaan di masa yang akan datang, Secara khusus, relational capital sebagai komponen modal intelektual dipandang sebagai salah satu pemicu yang dapat meningkatkan keunggulan kompetitif perusahaan melalui relasi yang kuat dengan stakeholder, dan selanjutnya mampu meningkatkan kinerja perusahaan. Oleh sebab itu, penelitian ini mencoba menemukan bukti empiris pengaruh pengungkapan relational capital pada kinerja keuangan perusahaan High-IC Intensive Industries yang terdaftar di Bursa Efek Indonesia, periode pengamatan 2014 sampai dengan 2017. Sampel penelitian diseleksi dengan metoda purposive sampling dan berdasarkan kriteria yang diterapkan diperoleh total sebanyak 72 observasi perusahaan tahun (firm-year observations) High-IC Intensive Industries yang terdaftar di Bursa Efek Indonesia. Hasil penelitian dengan menggunakan pengujian regresi berganda dengan SPSS ini memberikan bukti empiris bahwa pengungkapan relational capital berpengaruh pada tiga ukuran kinerja keuangan, yaitu: pendapatan bersih, nilai perusahaan, dan arus kas operasi perusahaan.Kata kunci: relational capital, intangible capital, pendapatan bersih, nilai perusahaan, arus kas operasi.
LesionMap: A Method and Tool for the Semantic Annotation of Dermatological Lesions for Documentation and Machine Learning (Preprint)
Authors: Eapen Bell Raj , Archer Norm , Sartipi Kamran
Published: February 2020

UNSTRUCTURED

Diagnosis and follow-up of patients in dermatology rely on visual cues. Documentation of skin lesions in dermatology is time-consuming and inaccurate. Digital photography is resource-intensive, difficult to standardize, and has privacy concerns. We propose a simple method—LesionMap—and an electronic health software tool—LesionMapper—for semantically annotating dermatological lesions on a body wireframe. We discuss how the type, distribution, and progression of lesions can be represented in a standardized way. The tool is an open-source JavaScript package that can be integrated into web-based electronic medical records. We believe that LesionMapper will facilitate documentation in dermatology that can be used for machine learning in a privacy-preserving manner.
A Virtual Reality Exergame to Engage Adolescents in Physical Activity: Mixed Methods Study Describing the Formative Intervention Development Process (Preprint)
Authors: Farič Nuša , Smith Lee , Hon Adrian , Potts Henry W W , Newby Katie , Steptoe Andrew , Fisher Abi
Published: February 2020

BACKGROUND

Early adolescence (13-17 years) is a critical developmental stage for physical activity promotion. Virtual reality (VR) exergaming is a promising intervention strategy to engage adolescents in physical activity.

OBJECTIVE

The vEngage project aims to develop a physical activity intervention for adolescents using VR exergaming. Here, we describe the formative intervention development work and process of academic-industry collaboration.

METHODS

The formative development was guided by the Medical Research Council framework and included recruiting an adolescent user group to provide iterative feedback, a literature review, a quantitative survey of adolescents, qualitative interviews with adolescents and parents, inductive thematic analysis of public reviews of VR exergames, a quantitative survey and qualitative interviews with users of the augmented reality running app Zombies, Run!, and building and testing a prototype with our adolescent user group.

RESULTS

VR exergaming was appealing to adolescents and acceptable to parents. We identified behavior change techniques that users would engage with and features that should be incorporated into a VR exergame, including realistic body movements, accurate graphics, stepped levels of gameplay difficulty, new challenges, in-game rewards, multiplayer options, and the potential to link with real-world aspects such as physical activity trackers. We also identified some potential barriers to use, such as cost, perceived discomfort of VR headsets, and motion sickness concerns. A prototype game was developed and user-tested with generally positive feedback.

CONCLUSIONS

This is the first attempt to develop a VR exergame designed to engage adolescents in physical activity that has been developed within a public health intervention development framework. Our formative work suggests that this is a very promising avenue. The benefit of the design process was the collaborative parallel work between academics and game designers and the involvement of the target population in the game (intervention) design from the outset. Developing the game within an intervention framework allowed us to consider factors, such as parental support, that would be important for future implementation. This study also serves as a call to action for potential collaborators who may wish to join this endeavor for future phases and an example of how academic-industry collaboration can be successful and beneficial.
Pengaruh Bermain Slime terhadap Rentang Sendi Phalang Pasien Stroke di Rumah Sakit Adi Husada Surabaya
Authors: Kristiani Rina Budi , Orizani Chindy Maria , Susanti Susanti
Published: February 2020

Latar Belakang: Pasien yang menderita stroke secara mendadak akan mengalami kelemahan ekstremitas, gangguan ini dapat mengganggu kegiatan hidup sehari-hari, tindakan yang dapat dilakukan perawat adalah melakukan range of motion yang menyenangkan dengan menggunakan bermain slime.Tujuan: Penelitian ini bertujuan untuk mengetahui pengaruh bermain slime terhadap rentang sendi phalang pasien stroke di RS Adi Husada Surabaya.Metode: Metode penelitian yang digunakan adalah quasi eksperimental dengan pre dan postt test di RS Adi Husada Surabaya selama April – Juli 2019 berjumlah 40 responden. Pengambilan sampel dilakukan dengan cara consecutive sampling, kelompok intervensi berjumlah 20 responden dan kelompok kontrol berjumlah 20 responden. Variabel independen dalam penelitian ini adalah Bermain Slime dan variabel dependennya adalah rentang sendi phalang. Instrumen yang digunakan dalam pengumpulan data adalah lembar observasi untuk rentang sendi phalang yang diukur dengan menggunakan geniometer.Hasil: Jenis kelamin laki-laki 67,5%, kelompok umur dewasa dengan rentang usia 21-60 tahun sebanyak 57,5%, serangan stroke sekali sebanyak 82,5% dan tidak ada dukungan keluarga sebesar 52,5%. Hasil uji beda peningkatan rentang sendi sebelum dan sesudah intervensi pada kelompok intervensi(18,29o) dan kelompok kontrol (3,23o), statistik berbeda signifikan (t-independent  test  pvalue   =  0,020).  Hasil  Uji  perbedaan  rentang  sendi  pada  kelompok  intervensi sebelum intervensi (33,02o) dan sesudah intervensi (51,31o) statistik berbeda signifikan  (t-paired test pvalue = 0,003).Kesimpulan: Terdapat pengaruh antara Bermain Slime terhadap rentang sendi phalang pada pasien stroke karena bermain slime membantu melakukan latihan rentang gerak sendi phalang pada pasien stroke yang mengalami kelemahan rentang sendi phalang
Optimization Fuzzy Inference System based Particle Swarm Optimization for Onset Prediction of the Rainy Season
Authors: Noviandi Noviandi , Ilham Ahmad
Published: February 2020

Rainfall which is occurred in an area explain the Onset Rainy Season (ORS). ORS is a characteristic of the rainy season which is important to know, but the characteristics of the rain itself is very difficult to predict. We use the method of Fuzzy Inference System (FIS) to predict ORS. Unfortunately, FIS is weak to determine parameters so that influences the working FIS method. In this study, we use PSO to optimize parameter of the FIS method to increase perform of the FIS method for onset prediction of the rainy season with the predictor Sea Surface Temperature Nino 3.4 and Index Ocean Dipole. We used coefficient correlation to determine the relationship between two variables as predictors and RMSE as evaluate to all methods. The experiment result has shown that the work of FIS-PSO after optimizing produced the good work with the coefficient correlation = 0.57 and RMSE = 2.96 that is the smallest value that is better performance if compared with other methods. It can be concluded that the method proposed can increase the onset prediction of the rainy season.
Low-cost and Efficient Fault Detection and Protection System for Distribution Transformer
Authors: Umar Buhari Ugbede , Ambafi James Garba , Olaniyi Olayemi Mikail , Agajo James , Isah Omeiza Rabiu
Published: February 2020

Distribution transformers are a vital component of electrical power transmission and distribution system. Frequent Monitoring transformers faults before it occurs can help prevent transformer faults which are expensive to repair and result in a loss of energy and services. The present method of the routine manual check of transformer parameters by the electricity board has proven to be less effective. This research aims to develop a low-cost protection system for the distribution transformer making it safer with improved reliability of service to the users. Therefore, this research work investigated transformer fault types and developed a microcontroller-based system for transformer fault detection and protection system using GSM (the Global System of Mobile Communication) technology for fault reporting. The developed prototype system was tested using voltage, current and temperature, which gave a threshold voltage higher than 220 volts to be overvoltage, a load higher than 200 watts to be overload and temperature greater than 39 degrees Celsius to be over temperature was measured. From the results, there was timely detection of transformer faults of the system, the transformer protection circuits were fully functional, and fault reporting was achieved using the GSM device. Overall, 99% accuracy was achieved. The system can thus be recommended for use by the Electricity Distribution Companies to protect distribution transformers for optimal performance, as the developed system makes the transformers more robust, and intelligent. Hence, a real-time distribution transformer fault monitoring and prevention system is achieved and the cost of transformer maintenance is reduced to an extent.
Análisis de la cadena de comercialización del chile habanero de Yucatán y su denominación de origen
Authors: Zapata-Aguilar José Apolinar , Pérez-Akaki Pablo , Moo-Novelo Carlos Antonio
Published: February 2020

Las cadenas de comercialización se han vuelto un instrumento importante para el estudio de las relaciones económicas, pues permiten entender los diferentes procesos, agentes y características de un bien, desde su origen hasta que llega a manos de los consumidores. El presente estudio busca caracterizar la cadena de comercialización del chile habanero de Yucatán a través de una investigación documental y de campo, para conocer su funcionamiento y el impacto que ha generado sobre dicha cadena la obtención de la denominación de origen −DO−. Se emplearon dos técnicas de recolección de información: la primera, fue una investigación documental y la segunda fue una entrevista semiestructurada dirigida a actores de la cadena de comercialización del chile habanero. Se encontró como resultado del estudio de investigación, de enfoque cualitativo, que los intermediarios son los actores más beneficiados de la cadena, y no los productores como se podría pensar; así mismo, se halló que la denominación de origen no está siendo aprovechada como se planeó, ya que, al no cumplirse con la normatividad que exige la DO, no es posible usar este distintivo para obtener un sobreprecio por esta importante hortaliza en los mercados internacionales. Por tanto, resulta indispensable la creación de un Consejo Regulador del Chile Habanero que siente las bases para la integración de la cadena, que en este caso deberá ser peninsular ya que la DO contempla también a los estados de Campeche y Quintana Roo.
Retos de las instituciones de educación superior para su articulación en la Industria 4.0
Authors: Pérez-Rojas Juan Guillermo
Published: February 2020

La Cuarta Revolución Industrial (4RI), también conocida como Industria 4.0, hace referencia a un nuevo paradigma en el cual se le proporciona a la industria tradicional, y a sus procesos asociados, tecnologías donde los sistemas de información y comunicación se utilizan, en gran medida, para mejorar la productividad. La Industria 4.0 es entonces la base para la transición a una economía que se fundamenta en el conocimiento, dejando a un lado la economía de bajo costo y basada en los recursos, influyendo directamente en dimensiones como la educación y la formación de las nuevas generaciones.
Bibliometric Study of the Efficiency of Public Expenditure on Education
Authors: Arias-Ciro Juliana
Published: February 2020

This bibliometric study analyzes the literature on the efficiency of public education expenditure using two types of bibliometric indicators: quantity (number of publications) and quality (impact by year, author, and journal). These indicators are calculated with worldwide results from the database Scopus from January 2000 to June 2018. The results were classified by author, journal, and publication country focusing on the methodological approach with the aim of identifying research trends in the field. The main results indicate the existence of a growing interest by scholars in the field since 2000, who have used different levels of comparative analysis (cross-country, regional, university, school, and student) and methods (parametric and nonparametric). In addition, nonparametric approaches have been most relevant in recent years thanks to the development of statistical software, their public access, and the possibility to work with a small database, which allows an easy implementation and use of cross-country comparisons. Finally, there is an evident lack of literature analyzing the efficiency of education expenditure in Latin American countries, which opens up a future line of research.
Novel Detection and Restorative Levodopa Treatment for Preclinical Diabetic Retinopathy
Authors: Motz Cara T. , Chesler Kyle C. , Allen Rachael S. , Bales Katie L. , Mees Lukas M. , Feola Andrew J. , Maa April Y. , Olson Darin E. , Thule Peter M. , Iuvone P. Michael , Hendrick Andrew M. , Pardue Machelle T.
Published: February 2020

Diabetic retinopathy (DR) is diagnosed clinically by directly viewing retinal vascular changes during ophthalmoscopy or through fundus photographs. However, electroretinography (ERG) studies in humans and rodents have revealed that retinal dysfunction is demonstrable prior to the development of visible vascular defects. Specifically, delays in dark-adapted ERG oscillatory potential (OP) implicit times in response to dim-flash stimuli (<−1.8 log cd · s/m2) occur prior to clinically recognized DR. Animal studies suggest that retinal dopamine deficiency underlies these early functional deficits. In this study, we randomized individuals with diabetes, without clinically detectable retinopathy, to treatment with either low- or high-dose Sinemet (levodopa plus carbidopa) for 2 weeks and compared their ERG findings with those of control subjects (no diabetes). We assessed dim-flash–stimulated OP delays using a novel handheld ERG system (RETeval) at baseline and 2 and 4 weeks. RETeval recordings identified significant OP implicit time delays in individuals with diabetes without retinopathy compared with age-matched control subjects (P < 0.001). After 2 weeks of Sinemet treatment, OP implicit times were restored to control values, and these improvements persisted even after a 2-week washout. We conclude that detection of dim-flash OP delays could provide early detection of DR and that Sinemet treatment may reverse retinal dysfunction.
Prevalence and Prevention of Contact Dermatitis Caused by FreeStyle Libre: A Monocentric Experience
Authors: Pyl Jeroen , Dendooven Ella , Van Eekelen Ine , den Brinker Marieke , Dotremont Hilde , France Annick , Foubert Kenn , Pieters Luc , Lambert Julien , De Block Christophe , Aerts Olivier
Published: February 2020

OBJECTIVE

Cutaneous adverse events (CAE) from FreeStyle Libre include allergic contact dermatitis (ACD) caused by the allergen isobornyl acrylate (IBOA). We aim to report CAE from this glucose sensor, ACD to IBOA in particular, and the outcome of using barrier films as a prevention.

RESEARCH DESIGN AND METHODS

A monocentric, retrospective review of medical files from adult and pediatric patients with diabetes using Freestyle Libre, in the period between December 2016 and April 2019, was performed with a focus on CAE.

RESULTS

Fifty-seven of 1,036 patients with diabetes (5.5%) were referred to our dermatology department because of CAE from FreeStyle Libre. Thirty-nine of 1,036 (3.8%) had ACD due to IBOA. Only two patients, of whom one sensitized to IBOA, had a benefit from using barrier films.

CONCLUSIONS

CAE occurred in 5.5% of FreeStyle Libre users, and 3.8% suffered from ACD due to IBOA. Barrier films had limited value in the prevention.
Physical Properties of Nanohybrid and Microhybrid Resin Composites Subjected to an Acidic Environment: A Laboratory Study
Authors: Ferooz M , Bagheri R , Jafarpour D , Burrow MF
Published: February 2020

Background:

This study investigated the hardness and color stability of five resin composites subjected to different polishing methods following immersion in distilled water or lactic acid for up to three months.

Methods and Materials:

Three nanohybrid, Paradigm (3M ESPE), Estelite Sigma Quick (Tokuyama), Ice (SDI), and two microhybrid, Filtek P60 and Filtek Z250, composites were examined. Disc-shaped specimens (10×1.5 mm) were prepared and immersed in distilled water for 24 hours then polished using either silicon carbide paper, the Shofu polishing system or were left unpolished (control). The CIE values and microhardness were determined using a spectrophotometer and digital Vickers hardness tester, respectively (n=10) after one, 45, and 90 days of storage in distilled water or lactic acid. Data were analyzed using analysis of variance, Tukey test, and Pearson correlation coefficient.

Results:

Ice exhibited the greatest color change, yet Paradigm and Filtek P60 demonstrated the least. Overall, discoloration of tested materials was multifactorial and the effect of storage media depended on the material, polishing method and time interval. The greatest hardness was obtained for Paradigm and the lowest for Estelite. Hardness was found to be significantly higher in lactic acid after 45 days (p=0.014) and even higher after 90 days (p<0.001) compared with distilled water.

Conclusions:

An acidic environment did not adversely affect color stability or microhardness of the resin composites. There was a significantly mild reverse correlation between hardness and color change in both storage media.
A Comparative Study of Light Transmission by Various Dental Restorative Materials and the Tooth Structure
Authors: Ilie N , Furtos G
Published: February 2020

Clinical Relevance

Light transmission through dental materials and tooth structure has direct clinical implication on such factors as selecting an appropriate curing technique during a restorative process.

Introduction:

This study aims to quantify and compare the amount of light that passes through seven different types of direct and indirect restorative materials comprising light-cured resin based composites (regular and bulk-fill), computer-aided design/computer-aided manufacturing (CAD/CAM) restoratives such as resin based composites, poly(methyl methacrylate) (PMMA) resin, leucite glass-ceramic, lithium silicate glass-ceramic, feldspar ceramic, and the natural tooth structure.

Methods and Materials:

Individual sets (n=6) of plane-parallel test specimens (2 mm) of 32 restorative materials belonging to the aforementioned seven material types and the tooth structure were prepared. Within the analyzed materials, one leucite glass-ceramic and one lithium disilicate glass-ceramic were considered in two different translucencies. In addition, two light-cured resin composites, one CAD/CAM resin composite, and one lithium disilicate glass-ceramic were considered in two different shades. Optical properties (transmittance, T; absorbance, A; and opacity, O) of each material were calculated from the relationship between incident and transmitted irradiance [I(d)] using a violet-blue light-curing unit. Incident and transmitted irradiance were assessed in real time on a spectrophotometer. A multivariate analysis (general linear model) assessed the effects of various parameters on the optical properties.

Results:

A very strong influence of the parameter material was identified on I(d) (p<0.001; partial eta squared, ηP2=0.953), T (p<0.001; ηP2=0.951), A (p<0.001; ηP2=0.925), and O (p<0.001; ηP2=0.886), while the effect of the parameter material type was not significant (p=0.079, p=0.05, p=0.05, and p=0.051, respectively). Light attenuation differed significantly by material within each shade category and by shade category within the analyzed material.

Conclusions:

Attenuation of light through restorative materials and tooth structure is high (59.9% to 94.9%); thus, deficits in polymerization are difficult to compensate for by additional light exposure at the end of the restorative process.
Pure Ormocer vs Methacrylate Composites on Posterior Teeth: A Double-blinded Randomized Clinical Trial
Authors: Torres CRG , Augusto MG , Mathias-Santamaria IF , Di Nicoló R , Borges AB
Published: February 2020

Clinical Relevance

The clinical behavior of pure ormocer composite is reliable when used in class II restorations after 24 months of evaluation.

Objective:

The aim of this study was to evaluate the clinical performance of class II restorations made using pure ormocer and methacrylate composites in a period of 24 months, using a split-mouth double-blinded randomized design.

Methods and Materials:

Thirty patients received two class II restorations (n=60) performed with different composites: GrandioSO (methacrylate, nanohybrid) and Admira Fusion (pure ormocer, nanohybrid). The universal adhesive system (Futurabond M+) was applied in all restorations using the self-etching mode. The composites were placed by the incremental technique. The restorations were evaluated using the FDI World Dental Federation criteria after 7 days and 6, 12, and 24 months postoperatively.

Results:

After 24 months, 23 patients attended the recall and 46 restorations were evaluated. Fisher's statistical analysis (5%) showed no difference between the materials. One pure ormocer restoration and one methacrylate restoration presented small fractures. Only one tooth suffered a fracture of the remaining tooth structure. Admira Fusion presented, respectively, 100%, 95.66%, and 100% of acceptable performance in general scores for esthetic, functional, and biological properties. GrandioSO presented, respectively, 100%, 91.31%, and 95.66% of acceptable performance in the same scores.

Conclusion:

After 24-month follow-up, nonsignificant differences between the tested composites was detected. Both materials provided acceptable clinical performance in class II restorations.
Two-year Follow-up of Ceramic Veneers and a Full Crown Treated With Self-etching Ceramic Primer: A Case Report
Authors: Souza ROA , da Silva NR , de Miranda LM , de Araújo GM , Moura DMD , Barbosa HAM
Published: February 2020

Clinical Relevance

The Monobond Etch & Prime seems to be an efficient option for adhesive cementation of ultrathin veneers and full crown ceramic with good properties after two years of clinical follow-up.

The use of the self-etching ceramic primer combines the stages of acid conditioning and silanization in cementation procedures of ceramic restorations. The protocol is a simpler and safer alternative to the conventional protocol for surface treatment of silica-based ceramics. This case report describes the steps of an esthetic rehabilitation with ultrathin veneers and full crown based on lithium disilicate treated with a ceramic primer (Monobond Etch & Prime, Ivoclar Vivadent, Schaan, Liechtenstein). After two years of clinical follow-up, the restorations presented satisfactory esthetic and functional performance, color stability, surface and marginal integrity, and absence of cracks and debonding. More research is needed to investigate the clinical performance and longevity of the ceramic restorations treated with self-etching ceramic primers.
Bioactive Materials Subjected to Erosion/Abrasion and Their Influence on Dental Tissues
Authors: Viana ÍEL , Alania Y , Feitosa S , Borges AB , Braga RR , Scaramucci T
Published: February 2020

Objective:

The objective of this study was to evaluate the effect of erosion or erosion-abrasion on bioactive materials and adjacent enamel/dentin areas.

Methods and Materials:

Enamel and dentin blocks (4×4×2 mm) were embedded side by side in acrylic resin, and a standardized cavity (1.2×4×1.5 mm) was prepared between them. Preparations were restored with the following materials: composite resin (Filtek Z350, control); experimental composite containing di-calcium phosphate dihydrate particles (DCPD); Giomer (Beautifil II), high viscosity glass ionomer cement (GIC, Fuji IX); and a resin-modified GIC (Fuji II LC). The specimens were submitted to two cycling models (n=10): erosion or erosion-abrasion. The challenges consisted of five-minute immersion in 0.3% citric acid solution, followed by 60-minute exposure to artificial saliva. Toothbrushing was carried out twice daily, 30 minutes after the first and last exposures to acid. Dental and material surface loss (SL, in μm) were determined by optical profilometry. Data were analyzed with Kruskal-Wallis and Dunn tests (α=0.05).

Results:

Under erosion, for enamel, only the GIC groups presented lower SL values than Z350 (p<0.001 for Fuji IX and p=0.018 for Fuji II LC). For dentin, none of the materials showed significantly lower SL values than Z350 (p>0.05). For material, the GICs had significantly higher SL values than those of Z350 (p<0.001 for Fuji IX and p=0.002 for Fuji II LC). Under erosion-abrasion, the enamel SL value was significantly lower around Fuji II LC compared with the other materials (p<0.05). No significant differences were observed among groups for dentin SL (p=0.063). The GICs and Giomer showed higher SL values than Z350 (p<0.001 for the GICs and p=0.041 for Giomer).

Conclusion:

Both GIC-based materials were susceptible to erosive wear; however, they promoted the lowest erosive loss of adjacent enamel. Against erosion-abrasion, only Fuji II LC was able to reduce enamel loss. For dentin, none of the materials exhibited a significant protective effect.
Wear Properties of Different Additive Restorative Materials Used for Onlay/Overlay Posterior Restorations
Authors: De Angelis F , D'Arcangelo C , Malíšková N , Vanini L , Vadini M
Published: February 2020

The purpose of this laboratory study was to compare the two-body wear resistance of different restorative materials commonly used for the indirect restoration of posterior teeth. The tested materials, based on ceramic (Imagine Press X, IPS e.max CAD, Milled Celtra Duo, Glaze-Fired Celtra Duo, Vita Mark II) and composite (Enamel Plus HRi, Enamel Plus HRi Bio-Function, Filtek Supreme XTE, Lava Ultimate), were compared with the wear properties of a type III gold alloy (Aurocast 8). Flat samples were prepared with a 6-mm thickness (n=10). Composite samples were tested after a heat polymerization cycle. All samples were exposed to a two-body wear test in a dual axis chewing simulator performing over 120,000 loading cycles. The opposing abrader cusps were fabricated from yttria-stabilized tetragonal zirconia polycrystal. The vertical substance loss (mm) and the volume loss (mm3) were recorded, as was the wear of the antagonist cusp (mm). Mean values were analyzed by one-way analysis of variance. Significant differences among materials were detected. The heat-cured resin-based composite material Enamel Plus Bio-Function and the type III gold alloy demonstrated similar mean values for wear depth and volumetric loss.
Effect of Various Surface Treatments on Ti-Base Coping Retention
Authors: Kemarly K , Arnason SC , Parke A , Lien W , Vandewalle KS
Published: February 2020

Clinical Relevance

Mechanical surface roughening of the titanium-abutment base is necessary to increase the pull-off bond strength of the lithium disilicate abutment material. Additional chemical surface treatment may further increase the bond strength, but the effects are product specific.

Objective:

The titanium-cement interface of a Ti-Base implant crown must be able to resist intraoral pull-off forces. The purpose of this study was to evaluate the effect of mechanical and chemical surface treatments of a titanium-abutment base (Ti-Base, Dentsply/Sirona) on the pull-off bond strength of a lithium disilicate abutment coping.

Methods and Materials:

Ti-Bases were divided into nine groups of 10 copings each that varied in both mechanical surface treatment (none; Al2O3 air abrasion; CoJet silicoating, 3M ESPE) and chemical treatments (none; Monobond Plus, Ivoclar Vivadent; Alloy Primer, Kuraray). Lithium disilicate abutment copings (IPS e.max CAD, Ivoclar Vivadent) were designed and milled. After crystallization, the copings were cemented onto the Ti-Bases with a resin cement (MultiLink Hybrid-Abutment Cement, Ivoclar Vivadent) according to the manufacturer's recommendations. The copings were torqued to a mounted implant, and the access channel was sealed with composite. After 24-hour storage and 2000 thermal-cycles in distilled water, the copings were subjected to a removal force parallel to the long axis of the interface until fracture. Data were analyzed with multiple one-way analyses of variance and Tukey post hoc tests (α=0.05).

Results:

Significant differences were found between groups based on type of surface treatment (p<0.05).

Conclusions:

Chemical surface treatment with Monobond Plus and mechanical surface treatment with CoJet silicoating or Al2O3 air abrasion resulted in the greatest pull-off bond strength. Alloy Primer did not provide a statistically significant increased pull-off bond strength when the surfaces were mechanically treated with Al2O3 air abrasion or CoJet silicoating. The lack of any mechanical surface treatment resulted in the lowest pull-off bond strength regardless of the type of chemical surface treatment.
Kanariefågeln som tystnade. Finlands gestalt shift om kinesiska investeringar
Authors: Mattlin Mikael
Published: February 2020

Av historiska, ekonomiska och säkerhetspolitiska orsaker är Finland ett ”minst sannolikt fall” (least likely case) vad gäller oro över kinesiska investeringar. Finland har inom EU haft det högsta relativa handelsberoendet av Kina. Sedan år 2016 är Finland även ett av de EU-länder som fått mest investeringar från Kina absolut sett. Finland, som inte är NATO-medlem, har oproblematiska relationer till Kina och en öppen ekonomi, som ännu för några år sedan välkomnade kinesiska investeringar. Landet har också en ovanligt lång obruten tradition av inhemsk lagstiftning om utländska investeringar som sedan 1992 kan betecknas som liberal. Under de senaste två åren har det emellertid bland policyeliten och i den allmänna diskussionen skett en drastisk förändring i synen på kinesiska investeringar som närmast kan betecknas som en gestalt shift. En påföljd av detta är att behovet av en bättre helhetsbild om kinesiska investeringar har identifierats. Informationsutbyte och koordinering mellan olika myndigheter har förbättrats på många sätt. Samtidigt har man även fördjupat nordiskt myndighetssamarbete och informationsutbyte om relevant lagstiftning och praxis inom området. Även om samarbete kring utländska investeringar inte ingick i Stoltenberg-rekommendationerna år 2009, så kan man se det som ett naturligt led i intensifierat nordiskt säkerhetssamarbete.
Abstract in English:The Canary That Fell Silent. Finland’s Gestalt Shift on Chinese InvestmentsFor a mixture of historical, economic and security policy reasons Finland can be regarded as a least likely case with regard to apprehensiveness over Chinese investments. Within the EU, Finland has had the highest relative trade dependence on China. Since 2016, Finland is also one of the EU member states that have attracted the most Chinese investment in absolute terms. Finland, which is not a NATO member, has unproblematic relations with China and an open economy that up until a few years ago welcomed Chinese investments. The country also has an unusually long unbroken tradition of domestic legislation regarding foreign investments, which since 1992 can be characterised as liberal. However, during the last two years, there has been a drastic change in views on Chinese investments, both among the policy elite and in the public debate. This change can be regarded as a veritable gestalt shift. As a corollary, a need for a better overview of Chinese investments has been identified. Information exchange and coordination between various governmental departments has been improved in several ways. Simultaneously, cooperation and information exchange between relevant Nordic authorities regarding relevant legislation and praxis has also deepened. Although the 2009 Stoltenberg recommendations did not encompass cooperation on foreign investments, this can be seen as a natural leg in intensified Nordic security cooperation.
Development of Group Counseling Guidelines for Student Self Control Improvement in Prevention of Drug Abuse
Authors: Fidiawati Liza , Firman Firman , Solfema Solfema
Published: February 2020

The drug abuse in adolenscent circle, at Vocational High School,  is increasing significantly. The group of counceling service in a school is rarely used for preventing drug abuse. Most of the group counceling is used for solving about some problems, such as learning, personal, social, and career problem. This study is aimed to procude a simple, valid, and efective guidlines for the counceling group, to improve students self control in preventing drug abuse. This study is a development (Research and Development) with ADDIEmodel (Analyze, Design, Development, Implementation and Evaluation). TheSubjectof this study is the students at Vocational High School and the counceling teacher in school. The validity of this study is done by six experts who is related to this study and the guidlines display. The usability test is done by three of the counceling teacher. The data  analysis is descriptive and inferensial analysis with Koefisien Kendals statistic test. The study shows that: (1) The level of material suitability is very receivable with 93 percentage and guidlines display is also in proper category with 91 percentage, (2) The using of group counseling guidlines for improving students self control too prevent a drug abuse is in the best category with 87 percentage. It concludes that, this guidlines is proper to used by the counceling teacher and councelor as a tools in doing counceling in a counceling group as an effort to improve student self control in preventing a grud abuse.
Self-Acceptance of Young Prisoners in the Institute for Special Education for Children (LPKA)
Authors: Yuliarsih Eflen , Daharnis Daharnis , Karneli Yeni
Published: February 2020

Adolescent inmates are a population that is vulnerable to depression because being a prisoner is a hard life for adolescents. All the pressure in prison will be a major cause of depression for juvenile prisoners while in detention. In addition, feelings of fear caused by public perceptions of free teenage inmates will make prisoners increasingly feel isolated. Therefore, to reduce these impacts, self-acceptance is needed. The purpose of this study is to describe the aspects of self-acceptance that exist in adolescent prisoners in prison. Samples were collected form 46 prisoners adolescents by applying the purposive sampling technique. The instruments used were self-acceptance questionnaires which has a reliability score of 0.934 (Alpha Cronbach).Data analysis used aquantitative approach with descriptive methods. The results of self-acceptance juvenile inmates obtained an average score of 155.93 (hight self-acceptance category) with an average percentage category of 70.88%.
Alternatives Strategies to Empower Youth Volunteering in Omani Society Using SWOTAnalysis Technique
Authors: Al-Fahdi Rashid S. , Al-Ani Wajeha T. , Lashin Muhammed A.
Published: February 2020

The study aimed to develop strategic alternatives to activate volunteer work among Omani youth. SWOT analysis was used to indicate the strength, weaknesses, opportunities and challenges faced by youth. A questionnaire of 32 items with two domains was developed. An estimation of reliability using Cronbach-Alpha indicated 0.887 for level of effectiveness, and 0.918 for level of existences. A sample of 89 experts from civil society organizations and higher education institutions from different Omani governorates was selected. The results revealed that the most powerful aspects of volunteering were the incentives to encourage youth, notably the Sultan Qaboos Award for Volunteerings at the national level, and the existence of many charities, including those related to women associations, and others that provide voluntarily services to special needs people. The overall average weight of the strengths and weaknesses was 194.44 and 186.46 respectively. The main opportunities were reflected by existing governmental departments to follow up the work of the voluntary institutions, and the NGO civil societies’ global awareness of volunteering. Further, the study results showed that average percentage means of opportunities and challenges were 145.04 and 143.79 respectively. Considering these results, four strategic alternatives were developed.
The Degree of Application of Teachers in the First Basic Seminar in Jordan for Teaching Strategies to Teach Reading Comprehension in Arabic in the Light of RAMP Program
Authors: Mosleh Mohammad A. , Alshaboul Abeer K.
Published: February 2020

The study aims to identify the degree of application of the early learner teachers of the strategies of teaching reading comprehension in the Arabic language in light of the RAMP program. The sample consisted of 150 teachers from 39 schools in Ramtha, Jordan, and the results were analyzed using the SPSS software, where the two researchers followed (the descriptive approach) for the purpose of the study. The results showed the teachers' knowledge of the strategies of teaching reading comprehension, the comprehensiveness of its application, and the positive impact it has on the students, where they showed active learning, which contributed to raising their level of comprehension of texts. The results also showed that there are no statistically significant differences which affect the teacher in teaching reading comprehension strategies due to gender, experience, and gender by experience. At the end of the study, a series of proposals and recommendations were presented.
The Relationship Between Perfectionism and Goal Orientation Among Gifted Students in the King Abdullah II School of Excellence
Authors: AL-Momani Rawan A. , Bataineh Osama M.
Published: February 2020

This study aimed to find out the relationship between Perfectionism and Goal Orientation among Gifted Students in the King Abdullah II School of Excellence. It also aimed at finding out if the relationship between Perfectionism and Goal Orientation is different according to the level of education and gender. To achieve the objectives of the study, Perfectionism and Goal Orientation scales were developed by the researchers. The sample of the study consisted of 184 students at seventh and eighth grades in the King Abdullah II School of Excellence. They were randomly stratified selected from the students population. The results of the study indicated that the level of Perfectionism among the gifted students was high, and the study showed that the level of the types of goal orientation was high, specifically Mastery goal oriented. The results also indicated there was no statistically significant difference at the significance level (α=0.05) in the strength of the correlation between Perfectionism and the types of goal orientation due to the level of education. The results also indicated there was no statistically significant difference at the significance level (α=0.05) in the strength of the correlation between Perfectionism and the types of Goal Orientation due to gender.
Investigating students’ use of official statistical data
Authors: Mihăescu Constanța , Oţoiu Adrian , Profiroiu Alina , Niculescu-Aron Ileana
Published: February 2020

This paper presents the perceptions of social science students about the use of official statistical data, in the context of active learning of Statistics, and other topics related to Applied Statistics. In order to make these courses more attractive, and to challenge and stimulate statistical education, our students work on projects in which they use official statistical data to explore practical, real-life issues. Their attitudes and perceptions regarding official statistical data sources are very important, both for acquisition of statistical analysis skills, essential for their future professional life, and for improvement of the official data sources. Therefore, we conducted a custom-made survey among students from Romanian higher education institutions (HEIs) and gathered a database with 334 responses, which allowed us to identify the main characteristics, problems and solutions concerning the use of statistical official data sources by university students.
Safety margin assessment after microwave ablation of liver tumors: inter- and intrareader variability
Authors: Schaible Jan , Pregler Benedikt , Bäumler Wolf , Einspieler Ingo , Jung Ernst-Michael , Stroszczynski Christian , Beyer Lukas Philipp
Published: February 2020

Background

The aim of the study was to evaluate the inter- and intrareader variability of the safety margin assessment after microwave ablation of liver tumors using post-procedure computed tomography (CT) images as well as to determine the sensitivity and specificity of identification remnant tumor tissue.

Patients and methods

A retrospective analysis of 58 patients who underwent microwave ablation (MWA) of primary or secondary liver malignancies (46 hepatocellular carcinoma, 9 metastases of a colorectal cancer and 3 metastases of pancreatic cancer) between September 2017 and June 2019 was conducted. Three readers estimated the minimal safety margin in millimeters using side-by-side comparison of the 1-day pre-ablation CT and 1-day post-ablation CT and judged whether ablation was complete or incomplete. One reader estimated the safety margin again after 6 weeks. Magnetic resonance imaging (MRI) after 6 weeks was the gold standard.

Results

The intraclass correlation coefficient (ICC) for estimation of the minimal safety margin of all three readers was 0.357 (95%-confidence interval 0.194–0.522). The ICC for repeated assessment (reader 1) was 0.774 (95%-confidence interval 0.645–0.860). Sensitivity and specificity of the detection of complete tumor ablation, defined as no remnant tumor tissue in 6 weeks follow-up MRI, were 93%/82%/82% and 33%/17%/83%, respectively.

Conclusions

In clinical practice, the safety margin after liver tumor ablation is often assessed using side-by-side comparison of CT images. In the study, we were able to show, that this technique has a poor reliability (ICC 0.357). From our point of view, this proves the necessity of new technical procedures for the assessment of the safety distance.
Aktivitas Masa Lalu Masyarakat Pendukung Situs Doro Mpana, Dompu
Authors: Juliawati Ni Putu Eka , Wibisono Sonny Chr. , Utami Luh Suwita , Hidayah Ati Rati , Rema Nyoman
Published: February 2020

Abstract, Research at Doro Mpana Site started with a report from the Head of Kandai Satu Village about the findings of a number of objects which are suspected of being archaeological remains in the form of earthenware fragments, ceramics, metal objects, human bone fragments, and Batu Dimpa. Batu Dimpa is a term given by the community for flat stones which are believed to be ancient grave markers. The purpose of this study was to determine the activities carried out by the community of Doro Mpana Site in the past. Data was collected through excavation, survey, and interview methods. Data were analyzed using specific analysis that focused on the physical characteristics of artifacts and contextual analysis related to the connection between archeological data. Three excavation squares were opened in this first phase of research. The results of excavation are earthenware fragments, foreign ceramic fragments, andesite stones, Batu Dimpa, brick structures, and human bone fragments. In the past, Doro Mpana site was once used for burial. Foreign ceramics findings show that the community in the past had been in contact with the outside world in trade relations. Utilization of Doro Mpana as a settlement in more recent time is supported by brick findings and some historical records. Abstrak, Penelitian di Situs Doro Mpana diawali dengan laporan Lurah Kandai Satu tentang temuan sejumlah benda yang diduga merupakan tinggalan arkeologi berupa fragmen gerabah, keramik, benda logam, fragmen rangka individu manusia, dan Batu Dimpa. Batu Dimpa adalah sebutan masyarakat untuk batu pipih yang dipercaya merupakan penanda kubur kuno. Tujuan penelitian ini adalah untuk mengetahui aktivitas masyarakat pendukung Situs Doro Mpana pada masa lalu. Pengumpulan data dilakukan dengan metode ekskavasi, survei, dan wawancara. Data dianalisis dengan menggunakan analisis khusus yang menitikberatkan ciri fisik artefak dan analisis kontekstual yang berkaitan dengan hubungan antardata arkeologi. Tiga buah kotak ekskavasi dibuka dalam penelitian tahap pertama ini. Adapun hasil ekskavasi adalah berupa fragmen gerabah, fragmen keramik asing, batu andesit, Batu Dimpa, struktur bata, dan fragmen tulang individu manusia. Pada masa lalu Situs Doro Mpana pernah dimanfaatkan untuk penguburan. Temuan keramik asing menunjukkan bahwa masyarakat pada masa lalu telah mengadakan kontak dengan dunia luar dalam hubungan perdagangan. Pemanfaatan Doro Mpana sebagai permukiman pada masa yang lebih muda didukung temuan bata dan catatan sejarah.
IZBOR OPTIMALNOG METODA KOMPOSTIRANJA U USLOVIMA NERAZVIJENIH SISTEMA UPRAVLJANJA OTPADOM
Authors: Lazić Boško , Lazić Dejan
Published: February 2020

Radom je definisan i opisan čitav pro­ces kompostiranja, navedeni su najznačajniji parametri koji utiču na odvijanje procesa. Takođe, opisane su tehnologije kompostiranja, način sprovođenja eskperi­menta, analiza rezultata, kao i preporuke za buduća istraživanja.