bluuebunny/crossref_metadata_2025 huggingface dataset:
The Effect of Platelet Rich Fibrin (PRF) and Bone Graft (Carbonate Apatite) Applications on Platelet Derived Growth Factor-BB Post Flap Surgery in Patients with Chronic Periodontitis
Authors: Puspitadewi R. Heni , Hendiani Ina , Rusminah Nunung
Published: December 2019

Chronic periodontitis characterized by a periodontal pocket over 5 mm, alveolar bone resorption accompanied by tooth mobility, requires periodontal surgical treatment. Conventional surgical treatment can not achieve the regeneration of periodontal tissue and thus requires regenerative procedures, such as with the addition of PRF. PDGF-BB is a growth factor that plays an important role in wound healing. Developments in additional bioactive ingredients in surgical procedures are used to regulate inflammation and increase the speed of the healing process. The purpose of this study was to determine the effect of PRF and bone graft (carbonate apatite) on PDGF-BB levels post-surgical flap in patients with chronic periodontitis. The experimental study with open label and consecutive sampling was conducted on 10 subjects of chronic periodontitis who received surgical flap treatment with bone graft and PRF; and 10 subjects without PRF. GCF samples were collected immediately before surgery and 7 days post flap surgery for examination of PDGF-BB levels by ELISA method. The data were calculated statistically by Mann-Whitney test (p <0.05). The results showed that the mean difference of PDGF-BB level in PRF group was 9.44 pg/ml (-1.20 – 37.79 pg/ml) with p value (0.013) and Non-PRF group was 7.97 pg/ml (-6.62 - 44.42 pg/ml) with p value (0.059). The p value in the PRF group > 0.05 means a significant increase in PDGF-BB levels on the 7th day post flap surgery. Examination of PDGF levels, especially PDGF-BB, should be done in each healing phase of the wound from the inflammatory phase to the maturation and remodeling phase, for example on the 3rd, 7th, 14th and 28th days when PDGF levels approach zero and the healing process it's almost over, referring to the results of Alzahrani's research (2018) and also Matsuoka and Grotendorst (1989) which showed higher levels of PDGF-BB and VEGF in GCF on days 1, 3, 7 and 14 after surgery with minimally invasive surgery (MIS) technique. The conclusions of this study showed that the application of Platelet Rich Fibrin (PRF) and bone graft had an effect on the level of Platelet Derived Growth Factor (PDGF-BB) post-surgical flap in patients with chronic periodontitis, and elevated levels of PDGF-BB post-surgical flap with PRF application higher than surgical flap without the PRF application. Increased levels of PGDF-BB in the group applied to the PRF were higher than those that were not applied PRF, although statistically significant differences were not found, there was a tendency for the healing process of the PRF group to be better than the Non PRF group.
Effect of Different Granular Size on the Properties of Porous β-Tricalcium Phosphate Foam Granular Cements
Authors: Mohammad Zaki Haifaa' Auni , Shariff Khairul Anuar , Abu Bakar Mohamad Hafizi , Nurul Azmi Mohamad
Published: December 2019

Porous β-tricalcium phosphate (β-TCP) foam granular cements was obtained by exposing different range size of β-TCP foam granular (300-600 μm and 600-1000 μm) with 1.4 mol/L of saturated acidic calcium phosphate solution at various setting reaction times. It was found that large amount of dicalcium phosphate dihydrate (DCPD) was formed in the set specimens after exposing small size of β-TCP foam granular with saturated acidic calcium phosphate solution. Morphological observation shows that the bridging of DCPD platelet-like crystals between β-TCP foam granular surfaces were detected as early as 10 mins after exposing 300-600 μm of β-TCP foam granules with saturated acidic calcium phosphate solution. In fact, the amount of DCPD formed in the specimens obtained from small size of β-TCP foam granules is higher than large sized foam granules. These results demonstrated that small size of β-TCP foam granules induced fast setting reaction of β-TCP foam granules to produce porous β-TCP foam granular cements.
Computational Analysis of Resistance to Alveolar Bone Resorption of Osseointegrated Implant
Authors: Miranda Aldilla , Rusyanti Yanti , Hendiani Ina , Dirgantara Tatacipta , Metta Prajna , Carolina Dyah Nindita
Published: December 2019

Dental implant failure started with a resorption on alveolar crest. Resorption occurred if the stress is greater than the strength threshold (ultimate strength). Bones carrying mechanical loads adapt their strength to the load applied on it by bone modelling or remodelling; by apposition or destruction depends on internal stress level distributed on the bones. This research was conducted using FEM on a CBCT image of model which were implanted and converted into computerized 3D finite element digital model. The model was given material properties, fixed support, and being simulated on occlusal loads of 87 N and friction loads of 29 N for 0,7 seconds.Maximum princip al loads on alveolar bone of implant model was 41 Mpa and still below the ultimate strength (69 MPa). Based on the stress level above, it may be concluded that alveolar bone on implant model has good resistance towards resorption.
Effect of 0.1% Genipin as a Crosslinking Agent to Degradability of Platelet Rich Fibrin (PRF)
Authors: Sulistiawati Sulistiawati , Rusyanti Yanti , Hendiani Ina , Syamsunarno Mas Rizky Anggun Adipurna , Nur Hikmah Zavani
Published: December 2019

Platelet-rich fibrin (PRF) was developed as a barrier membrane in periodontal regenerative therapy. It is known that PRF has a sustained released of growth factor and expected to facilitate the tissue regeneration. Since the PRF membranes have a rapid degradability (1-2 weeks), the regenerative therapy using a PRF membrane should be increased to reduce the degradability using a crosslinking agent which could provide resistance against enzymatic degradation. The aim of this study is to analyze the effect of 0.1% genipin as a crosslinking agent to degradability of PRF. PRF membranes were prepared from 20cc blood of healthy donors and immersed in 0.1% genipin solution as a test group and Phosphate Buffer Saline (PBS) solution as a control group for 2 hours and 72 hours. In order to evaluate degradability, the sample was subjected to 0.01% trypsin. Samples were weighed and the trypsin solution was refreshed every 24 hours. The difference weight represents enzymatic degradation. Degradation degree of sample PRF-crosslinked genipin 0.1% significantly decreased when it compared to the control group. Genipin reacts with primary amines in fibrin, performed a covalent coupling that improves the degradability resistance. This crosslink had to be effective to improve biomechanical properties of PRF as a membrane. This study demonstrated that 0.1% genipin as a crosslinking agent could reduce the degradation-degree of PRF.
Formation and Phase Transition of Crystalline Calcium Phosphate on Bioabsorbable Magnesium Alloy under Alkali Condition
Authors: Watanabe Shin , Yabutsuka Takeshi , Takai Shigeomi
Published: December 2019

In order to improve the corrosion resistance, bioabsorbable magnesium (Mg) alloy was immersed in an aqueous solution with three times of Ca2+ and HPO42- in comparison with those of conventional SBF at the moderate temperature. After immersion in the solution, the whole surface of Mg alloy was coated with plate-like crystals consisting of octacalcium phosphate (OCP). Then the OCP-coated Mg alloy was immersed in the alkali solution. Although significant change of morphology was not observed, the OCP formed on the Mg alloy was transformed to hydroxyapatite (HAp) under alkali condition.
Mechanical Test of Aluminum-Zirconium-Silicate Composite Prototype with Filler Volume Variation
Authors: Karlina Elin , Usri Kosterman , Febrida Renny , Panatarani Camellia , Joni I Made , Fatmala Yunita
Published: December 2019

Recently, ceramic material has become a main object of scientific interest especially in dental material. The advance of dental materials technology has led to use of zirconia-based ceramics for composite filler. In this study, composite filler has been synthesized from natural zircon sand through geopolymerization method. Composite prototype were made with different filler volume to evaluate mechanical properties including hardness number and diametral tensile strength. Samples divided into two groups with 50 wt% filler volume (group A) and 75 wt% filler volume (group B) which 3 samples for each group. The surface micro hardness of each group tested by Leco M-400-H1 vickers microhardness testing machine and for diametral tensile strength tested using universal testing machine (Lloyd) with crosshead speed of 1,0 ± 0,25 mm/min. The data were analyzed using independent sample t-test. The results showed that the average of hardness number on group A was 13,8 VHN while for group B was 24,1 VHN. The average of diametral tensile strength for group A was 20,461 MPa and 27,689 MPa for group B. Statistical result showed that the value (P<0,05). The conclusion, there is a signifficant difference on the result of hardness test between group A (50 wt% filler volume) and group B (75 wt% filler volume) and also on diametral tensile strength test.
Flexural Strength Evaluation of Dental Post Prototype Contain ZAS-PMMA Composite Fiber with Electrospinning Methods
Authors: Djustiana Nina , Faza Yanwar , Karlina Elin , Hasratiningsih Zulia , Munir Muhammad Miftahul , Khairurrijal Khairurrijal
Published: December 2019

Composite fiber were already developed and looked promising in dentistry. PMMA, optically clear polymer, was combined with high mechanically properties ZrO2-Al2O3-SiO2 (ZAS) ceramic powder to improve the flexural strength value of dental post prototype. ZAS powder, with ratio 60:20:20, were first prepared via sol-gel technique. Afterwards, PMMA was dissolved in acetone then incorporate with ZAS powder 1% wt to gain ZAS-PMMA composite fiber via electrospinning method. Dental post prototype were fabricated into two groups, one group contain ZAS-PMMA composite fibers and one group contain neat BisGMA, as control, with amount of each groups samples was 10. As-prepared samples were tested by Universal Testing Machine (UTM) to evaluate the flexural strength values. Based on unpaired T-test analysis (p value < 0.05), the composite fiber post is significantly higher (48.17 %) than the neat BisGMA post. ZAS-PMMA composite fiber post was potential to be used as dental endodontic post in anterior.
Методы построения скрученных линейных рекуррентных последовательностей максимального периода, базирующиеся на факторизации многочленов Галуа в кольце матричных многочленов
Authors: Goltvanitsa M A
Published: December 2019

Пусть $p$ - простое число, $R=\mathrm{GR}(q^d,p^d)$ - кольцо Галуа мощности $q^d$ и характеристики $p^d$, где $q = p^r$, $S=\mathrm{GR}(q^{nd},p^d)$ - расширение степени $n$ кольца $R$ и $\check{S}$ - кольцо эндоморфизмов модуля $_RS$. Последовательность $v$ над $S$, удовлетворяющую закону рекурсии $$ \forall i\in\mathbb{N}_0 :\;\;\;v(i+m)= psi_{m-1}(v(i+m-1))+...+\psi_0(v(i)),\;\;\;\psi_0,...,\psi_{m-1}\in\check{S},$$ будем называть скрученной линейной рекуррентной последовательностью над $S$ с характеристическим многочленом $\Psi(x) = x^m - \sum_{j=0}^{m-1}\psi_jx^j$. Максимально возможный период последовательности такого вида равен $\tau=(q^{mn}-1)p^{d-1}$. В работе предлагаются новые методы построения многочленов $\Psi(x)$, задающих законы рекурсии для скрученных линейных рекуррентных последовательностей максимального периода. Данные методы основаны на поиске в кольце $\check{S}[x]$ делителей классических многочленов Галуа над $R$ периода $\tau$.
Nezanesljivi pripovedovalec, fokalizacija in ironija v romanih Stud. chem. Helene Willfüer Vicki Baum in Eine Zierde für den Verein Marieluise Fleißer
Authors: Gulam Sara
Published: December 2019

V članku Nezanesljivi pripovedovalec, fokalizacija in ironija v romanih Stud. chem. Helene Willfüer Vicki Baum in Eine Zierde für den Verein Marieluise Fleißer sem raziskovala mehanizme pripovednega besedila, ki fokalizatorju omogočajo, da pride na površje in postane viden. Ukvarjala sem se z odnosom med pripovedovalcem in fokalizatorjem v omenjenih delih, ki sta nastali v času Weimarske republike. Obravnavam ju kot moderni besedili, v katerih sta pripovedovalec in fokalizator pretočni in sinkretični kategoriji. Po kratki sistematizaciji fokalizacije, ki jo je v naratologijo uvedel Gérard Genette, sem raziskovala povezavo med ironijo in nezanesljivim pripovedovalcem na eni strani ter fokalizatorjem na drugi. V analizi mi je uspelo dokazati, da lahko nezanesljivega pripovedovalca s fokalizacijo povežemo predvsem takrat, ko v tekstu ni dominanten zgolj en tip fokalizatorja, temveč si nasprotujeta vsaj dva dominantna fokalizatorja. Na konkretnih primerih sem pokazala, kako ironija in pripovedovalčeva nezanesljivost osvetlita odnos pripovedovalca do zgodbe, ki jo pripoveduje, in odločilno sooblikujeta strukturo pripovedi.
Der Status von Flüchtlingen in zwei deutschsprachigen Romanen aus der Perspektive des raumtheoretischen Ansatzes von Bernhard Waldenfels
Authors: Leskovec Andrea
Published: December 2019

Bernhard Waldenfels unterscheidet zwischen einem Raum, in den sich jemand einordnet und zu dem er gehört, und einem Ort, an dem sich jemand befindet. Das Subjekt ist also an einem Ort und bewegt sich gleichzeitig in einem Raum. In der Regel besteht eine ausgewogene Spannung zwischen dem Ort und der Verteilung im Raum. Gerät dieses Verhältnis aus dem Gleichgewicht, entstehen Orte ohne Raum und Räume ohne Orte. Letzteres bezeichnet einen Raum, in dem es keine singulären Kennzeichnungen gibt, kein individuelles oder situatives Hier und Jetzt, wodurch die Existenz eines Ich im Sinne eines Individuums fragwürdig wird. Orte ohne Räume dagegen bezeichnen eine Reduzierung auf ein Hier und Jetzt, wobei der Raum als Faktor der Zugehörigkeit abhandenkommt, was letztendlich ebenso zu einer Abwesenheit eines Ich führt, da eine Verortung oder Einordnung in einen Raum der Zugehörigkeit nicht möglich ist. Der Aufsatz ist der Versuch, diesen raumtheoretischen Ansatz für die Analyse literarischer Texte zu operationalisieren, in deren Mittelpunkt Flüchtende stehen.
The Image of a Woman of Colour and Native American Woman in Two Kerouac Novels: A Double Otherness
Authors: Rožman Ivančič Nejc
Published: December 2019

The article examines the portrayal of a woman of colour in the novel The Subterraneans (1958), and the portrayal of a Native American woman in the novel Tristessa (1960). The two works are representative examples within the opus of the American writer Jack Kerouac (1922–1969), and offer suitable starting points for the reinterpretation of his attitude towards women and non-white ethnicities. The novels reveal the ethnocentric, even colonizing attitude of the dominating male narrator in relation to the dominated and subjugated social groups. Although the treated works are considered Kerouac’s “female-centred novels” (Phelan Lyke 1991, v), this syntagm is problematized here by showing that the male narrator remains the true protagonist, focused essentially on his own perceptions of the non-white romantic subject, whereas the two female characters are (mere) objects for the protagonists’ self-discovery, life experience and psychological projection. In this sense, Kerouac’s consistent presentation of women as representatives of an identity of the exotic/Other reveals his nested gender and racial prejudice.
Validation of an automatic evaluation of sticky traps for fungus-gnats
Authors: Schuhli Guilherme Schnell e , Da Cruz Pedro Cazetta , Franciscon Luziane , Oliveira Edilson Batista de
Published: December 2019

A avaliação de insetos pragas por armadilhas adesivas é uma tarefa demorada, sujeita a erros de contagem. Nossa proposição originou-se da necessidade de realizar avaliações periódicas de infestações de mosquitos (Diptera: Sciaridae). Foram selecionadas 100 armadilhas, em um único local. A contagem manual foi realizada e as armadilhas foram posteriormente submetidas à digitalização e contagem automática. O programa R foi utilizado para comparação entre os métodos de contagem considerados. A abordagem automática sugerida, quando comparada à tradicional, permite esforços de amostragem mais rápidos, maiores coleções de registros de dados ou ainda maiores áreas amostradas em menos tempo.
Plan universitario para pueblos indígenas: experiencia de construcción participativa de la Universidad Nacional
Authors: Pino G. , Cerdas Y. , González C.
Published: December 2019

Este ensayo busca aportar a la discusión relacionado con la construcción de universidades más inclusivas e interculturales, desde la sistematización de la estrategia adoptada por la Universidad Nacional (UNA) en Costa Rica para la pertinente implementación del Plan para Pueblos Indígenas Quinquenal (PPIQ) suscrito por cuatro universidades públicas costarricenses en 2014, el cual tomó características diferenciadas de implementación debido a la diversidad histórica entre ellas en la construcción de relaciones con pueblos indígenas y en las formas de gestión académica y administrativa, las cuales  obligan a una adecuación singular de los acuerdos conjuntos del PPIQ.  En el caso de la UNA, la ejecución del Plan y el cumplimiento de sus compromisos se fundamenta en la participación propositiva de cada instancia involucrada desde sus experiencias y posibilidades.  Así, la coordinación original del PPIQ se amplió para absorber a los diferentes actores, con actividades propuestas y ejecutadas desde cada instancia.  Además, ha sido vital la inclusión del estudiantado indígena universitario en la planeación, formulación, ejecución y seguimiento de las acciones y compromisos, de tal manera que se ha transformado en un actor esencial para la ejecución exitosa del Plan y para su continuidad en el futuro, lo que ha contribuido, también, con el fortalecimiento de aspectos identitarios, en tanto, indígenas y como universitarios. Este modelo abierto y participativo ha permitido tener resultados importantes en corto tiempo; además de permitir la incorporación de acciones y metas de la iniciativa en estrategias de trabajo permanente de las diferentes instancias.
Precursores de la satisfacción con el Trabajo de Fin de Grado (TFG) en estudiantes de Psicología de la Universidad de Sevilla
Authors: Valdés Díaz M. , López-Cepero Borrego J.
Published: December 2019

En la Facultad de Psicología de la Universidad de Sevilla (US), el Trabajo Fin de Grado (TFG) constituye una asignatura obligatoria de seis créditos (150 horas) que se realiza en el último curso desde la implantación de los nuevos planes de estudios adaptados al Espacio Europeo de Educación Superior (EES). El objetivo del presente trabajo es conocer la experiencia personal que ha supuesto para el alumnado de la Facultad de Psicología de la Universidad de Sevilla la realización del TFG y analizar las variables que inciden en el grado de satisfacción. Participaron 207 estudiantes que completaron la asignatura en el curso 2014-15, de un total de 270 matriculados (76,7%). Se administró un cuestionario de lápiz y papel que recabó información sobre la asignación de tutores, necesidad de apoyo, dificultades en torno al TFG y la satisfacción con el proceso. En torno a un tercio del alumnado completó el TFG con tutores de su elección. Más de un 50% de participantes señalaron tener dificultades con el diseño del trabajo y el análisis de resultados. Sin embargo, el 83% valoró su TFG como un reto interesante. Una regresión lineal mostró que el tiempo dedicado, la utilidad percibida y la posibilidad de trasferir los resultados al terreno laboral fueron precursores de la valoración positiva del proceso. Se discute la conveniencia de diseñar acciones formativas específicas y reforzar la transferencia de conocimientos como vía para mejorar la experiencia del alumnado en TFG.
Elementos para el análisis en la interacción del aprendizaje entre los agentes intervinientes en el Prácticum de Fisioterapia
Authors: Sánchez Y. , Tomàs-Folch M.
Published: December 2019

El Prácticum constituye un elemento esencial en el proceso de formación de nuestros estudiantes que tienen la necesidad de vincular la teoría y la práctica. Tanto las actividades externas como internas han de ser equilibradas en la enseñanza y son consideradas como factores esenciales del aprendizaje activo en el proceso de formación. Durante la fase presencial de prácticas, el alumno tendrá que ser capaz de actuar profesionalmente identificando y resolviendo cualquier tipo de problema al lado de su tutor de prácticas, usando el conocimiento adquirido y la argumentación realizada en el aula universitaria. En este artículo presentamos una primera fase cuyo objetivo es averiguar los elementos para el análisis de las interacciones de aprendizaje entre los agentes intervinientes en las asignaturas de Prácticum I, II y Prácticum V, VI. Se ha optado por una metodología cualitativa de diseño etnográfico. Se llevará a cabo un focus group compuesto por personas expertas del campo teórico y práctico que opinarán y debatirán sobre los elementos intervinientes. Los elementos para el análisis de las interacciones en el aprendizaje entre los agentes intervinientes en el Prácticum I, II y Prácticum V, VI se agrupan entorno a las categorías siguientes: organización, coordinación, relaciones entre los agentes intervinientes, funciones, logros del aprendizaje y evaluación. 
Calidad y cualidad en la Educación Superior: una discusión teórica y una aproximación al tema en el sistema de educación superior ecuatoriano
Authors: Escobar-Jiménez C. , Delgado A.
Published: December 2019

Este documento trata algunos de los principales conceptos relacionados al aseguramiento de la calidad en educación superior. Se hace una aproximación a los conceptos de cualidad y calidad para evidenciar su relación y correspondencia etimológica y filosófica y el carácter  normativo que les antecede. Se estudia las nociones de cualidad a lo largo de tres tipos históricos de instituciones de educación superior. El marco de análisis concreto de estos conceptos es el sistema de educación superior en Ecuador.
Desarrollo de competencias mediante ABP y evaluación con rúbricas en el trabajo en grupo en Educación Superior
Authors: Bohórquez Gómez-Millán M. R. , Checa Esquiva I.
Published: December 2019

La investigación acerca del desarrollo de competencias con ABP ha crecido mucho en los últimos años, sin embargo, no se han investigado sus consecuencias sobre procesos psicosociales, como la creatividad, liderazgo entre iguales y cohesión de equipo en el trabajo en grupo. En este trabajo además se analizan las diferencias en el nivel competencial de 16 grupos de 4 estudiantes de la   asignatura Psicología Social del Deporte del Grado en Ciencias de la Actividad Física y el Deporte como resultado de su participación en una metodología de ABP evaluada con rúbricas. Los instrumentos utilizados en esta experiencia se dividen en dos: la evaluación de competencias y la evaluación de variables psicológicas relacionadas, como el liderazgo entre iguales (Escala de Evaluación del Líder Deportivo), la creatividad (Potencial Creativo y de la Creatividad Practicada en el trabajo y en la organización) y la cohesión grupal (versión española reducida del GEQ). Los resultados demuestran un aumento en todas las competencias, aunque en creatividad y en planificación no se aprecian mejoras significativas. La única de las variables psicosociales que ha mejorado significativamente ha sido el factor Empatía y Responsabilidad del Liderazgo, aunque el tamaño del efecto es pequeño. Como conclusiones se ofrecen recomendaciones sobre el uso del ABP y la evaluación a través de rúbricas.
Utilization of Open Educational Resources in Mathematics Instruction for the Intermediate School
Authors: Assiri Eman A. , Alnatheer Mohammed A.
Published: December 2019

The present study aimed to examine the extent of utilizing Open Educational Resources (OER) in mathematics instruction for the intermediate school in Riyadh, Saudi Arabia. It also aimed at identifying the benefits, the challenges, and the opportunities of applying OER in the educational process. For achieving the study objectives, the descriptive analytical approach was adopted. The study population comprised all the teachers of the intermediate school in Riyadh. A questionnaire was prepared and applied to a randomly selected sample of (113) teachers of the intermediate school. In the light of the findings, a set of recommendations and further studies were formulated.
Unconventional Opposition in Discourse: From the Perspective of Systemic Functional Linguistics
Authors: Song Wenxiu
Published: December 2019

Writers construct two entities or events as opposites in specific context by using language resources realizing semantic opposition, such as antonyms, parallel structure and conjunction for adversity. The construction of such temporary opposites (unconventional opposition) facilitates the presentation of writer’s stance and strengthens the interaction between the writer and readers. From Systemic Functional Linguistics, this study analyzes the ideational, interpersonal and textual meaning of unconventional opposition in discourse. It is found that the insertion of the opposite participants and process types in the current field contributes to demonstrate the ideational meaning of the discourse topic more fully, thus facilitating readers’ understanding; in the respect of interpersonal meaning, the opposite meaning triggered by negation can exclude the readers’ possible expectations while that triggered by attitudinal resources helps to negotiate appraisal meanings with readers, that is, affect, judgment of social behavior or appreciation of product; in the sense of textual meaning, unconventional opposition assigns a reader-friendly text structure, information flow and cohesion mechanism.
Cyber Bullying Through Social Media Among Basic Stage Students at Directorate of Education of the University District/Capital Governorate
Authors: Alshawareb Iyad Jerias , Alnasraween Mo’en Salman
Published: December 2019

The aim of this study was to identify the level of cyberbullying through the means of social media among the students of the basic stage in the Directorate of Education of the University District, the sample of the study consisted of 388 students from the seventh and tenth grades. To achieve the objectives of the study, a questionnaire was developed for the cyberbullying, which consisted of 30 items in its final form, and its validity and reliability were verified, the results of the study showed that there was a moderate level of cyber bullying in the sample of the study. There were no differences between the statistical averages according to gender. However, there were differences of statistical significance attributed to the grade and in favor of the tenth grade.
Critical Analysis and Identity Construction of Chinese News Media from Transitivity Perspective
Authors: Liu Yang , Jia Wanxin
Published: December 2019

As the disseminator of information, news media play a vital role in the public speech community. Especially the mainstream English media in China, which not only carefully design the topic, content, and framework of news to broadcast information but also construct cultural identity and build China’s image. Exemplified by a piece of news from China Daily, the present study analyzes its language features and function of transitivity system based on the theory of transitivity, and attempts to explore its implicit meaning and cultural identity beyond the literal text.
Determination of Elements in Acid Leaching of Graphite Using Instrumental Neutron Activation Analysis
Authors: Fisli Adel , Mustika Deni , Sudirman Sudirman , Torowati Torowati , Mulyaningsih Th. Rina , Dimyati Arbi , Joni I Made
Published: December 2019

Graphite material is extremely undissolvable to be turned into chemical solutions, therefore sample preparation is a serious problem faced in the determination of elemental impurity content in a graphite material. In this work, The nondestructive approach of instrumental neutron activation analysis (INAA) is applied to determine the concentration of multi-element in a graphite material, by employing both the forth floating process and the acid treatment method to the local Indonesian graphite. The sample was irradiated in the Rabbit system of G.A. Sywabessy Multi-Purpose Reactor at Serpong, Indonesia. The precision of the analysis was evaluated using certified reference materials which were obtained good performance with the most of concentration value in the range of 3 < zheta score < -3. Eleven elemental (Al, Sb, Co, Cu, La, Mn, Sc, Na, W, V, and Zn) concentration were determined in the forth floating process of the graphite. The Cu elemental is the most content with the value of 60,8 mg/kg or about 90% of total concentration content in graphite. Followed by the Sb content with a value of 5,5 mg/kg (about 8% of total impurities content in graphite). The remaining 2% includes the intermediate and the minor content of other impurity elements. After the acid treatment, the total concentration of impurities contained in the graphite material drastically decreases from 6.7% w/w to about 0,1; 0.6; and 0.59 % w/w for treatment employing the HF,  HNO3+H2SO4,and HF+HCl+H2SO4 acid reagent, respectively. Cu element makes the largest contribution to reduce the concentration of impurities in graphite which decreased from 60,675 mg/kg to 1,088 mg/kg; 925 mg/kg and 835 mg/kg for HF, HNO3+H2SO4 and HF+HCl+H2SO4 acid reagent, respectively. In addition, Sb element concentration dropped dramatically from 5,514 mg/kg to 93 mg/kg using HF reagents. The other trace elements (As, Ba, Ca, Ce, Eu, Fe, Mg, Sm, and Th) were also identified in the acid reagent treated graphite sample which are suspected to derivates from the impurity reagent and or from contamination during the sample preparation. The treated HF for graphite was obtained the low purity grades approach for nuclear graphite.
The Role of Ensemble Learning in Stock Market Classification Model Accuracy Enhancement Based on Naive Bayes Classifiers
Authors: Alkubaisi Ghaith Abdulsattar A.Jabbar
Published: December 2019

Over the last years, methods of hybrid and ensemble have attracted the attention of the data mining community. Moreover, in the computational intelligence area such as machine learning, constructing and adaptive hybrid models have become essential to achieve good performance. However, the accuracy of stock market classification models is still low, and this has negatively affected the stock market indicators. Furthermore, there are many factors that have a direct effect on the classification models’ accuracies which were not addressed by previous research such as the automatic labelling technique which results in low classification accuracy due to the absence of specific lexicon, and the suitability of the classifiers to the data features and domain. In this research, a proposed model is designed to enhance the classification accuracy by the incorporation of stock market domain expert labelling technique and the construction of an ensemble Naïve Bayes classifiers to classify the stock market sentiments. The methodology for this research consists of five phases. The first phase is data collection, and the second phase is labelling, in which polarity of data is specified and negative, positive or neutral values are assigned. The third phase involves data pre-processing. The fourth phase is the classification phase in which suitable patterns of the stock market are identified by Ensemble Naïve Bayes classifiers, and the final is the performance and evaluation. The classification method has produced a significant result; it has achieved accuracy of more than 89%.
Marshall-Olkin Power Lomax Distribution: Properties and Estimation Based on Complete and Censored Samples
Authors: Ul Haq Muhammad Ahsan , Hamedani G. G. , Elgarhy M. , Ramos Pedro Luiz
Published: December 2019

We study a new distribution called the Marshall-Olkin Power Lomax distribution. A comprehensive account of its mathematical properties including explicit expressions for the ordinary moments, moment generating function, order statistics, Renyi entropy, and probability weighted moments are derived. The model parameters are estimated by the method of maximum likelihood. Monte Carlo simulation study is carried out to estimate the parameters and the performance of the estimates is judged via the average biases and mean squared error values. The usefulness of the proposed model is illustrated via real-life data set.
Green Worship House Competition as an Effective Tool to Evaluate Green Pyramid Rating System (GPRS)
Authors: Badawy Nancy M. , Shahda Merhan M.
Published: December 2019

Egypt is divided into seven regional units; each region includes a number of governorates that are connected geographically and economically. When the Green Pyramid Rating System (GPRS) was proposed, and the weightings of its categories were set, the wide variation of the potential and the challenges of each region were not taken into account. Therefore, the study focused on highlighting these differences, and the main focus on Sinai region by analyzing the experience of activating The Green Pyramid Rating System (GPRS) during a competition held for this purpose. Accordingly, this paper presents an investigation into the international GBRSs to extract the specifications of a framework to improve GPRS classification, based on the experience of activating GPRS principles in Green Worship House Competition (GWHC) and the observations of participants of the competition. The study included a summary of what was suggested during participation in the competition to activate each category of Green Pyramid Rating System (GPRS), in addition to observations and problems encountered in the design of the project and activation of (GPRS) categories, then suggestions for developing the categories and weights of each category based on active participation in the Green Worship House Competition.
Anti-Müllerian hormone as a marker of embryo production in ruminants
Authors: Soquila Salvador S. , Mingala Claro N.
Published: December 2019

This review describes the role of anti-Müllerian hormone (AMH) in embryo production for assisted
reproductive technologies in ruminants. AMH is a marker of healthy follicles and oocytes, a reliable
marker of gonadotropin-responsive follicles, and an indicator of longevity and productivity in dairy
animals. The best times to measure AMH levels in order to select cows for embryo production is
during oestrus and the period after the 12th day of the oestrous cycle. This allows animals with AMH
concentrations below 87 pg/mL at oestrus or less than 74 pg/mL for multiple ovulation embryo transfer
to be eliminated. Good oocyte donors, which have higher antral follicle counts, can be identified based
on their higher AMH levels. In sheep and goats, the blood AMH level can serve as a marker of the
animal’s potential to produce high or low numbers of high-quality embryos. A plasma AMH level of
97 pg/mL in sheep has been shown to be the optimum cut-off point to predict fertility and can be useful
in selecting replacement ewes.
Culinary and technological suitability of pork obtained from three-way cross fatteners (Landrace x Yorkshire) x Duroc and (Landrace x Yorkshire) x Hampshire
Authors: Sieczkowska Halina , Zybert Andrzej , Krzęcio-Nieczyporuk Elżbieta , Antosik Katarzyna , Tarczyński Krystian , Koćwin-Podsiadła Maria
Published: December 2019

The aim of the study was to evaluate the culinary and technological value of meat obtained from three-way cross fattening pigs, i.e. [Landrace (L) x Yorkshire (Y)] x Duroc (D) and [Landrace (L) x Yorkshire (Y)] x Hampshire (H). The study was carried out in spring and summer on 60 pigs divided in 2 genetic groups: (LxY) x D and (LxY) x H. The rearing and pre- and post-slaughter conditions were the same for all animals. Slaughter and post-slaughter handling of the carcasses was in accordance with the procedure in use at the meat plant. The research material was similar in terms of hot carcass weight (85.14 ±2.90 kg and 85.31 ±3.29 kg) and lean meat content (56.50 ±2.71% and 56.98 ±1.99%) within each genetic group, i.e. (LxY) x D and (LxY) x H. The significant, highly unfavourable means obtained for meat quality traits in the case of the (LxY) x H pigs, in terms of both culinary and technological suitability for processing, clearly indicates that the Hampshire breed should not be used as a paternal component in mass production of fatteners. In the case of the (LxY) x D fatteners, the highly favourable values for meat quality traits, of importance to both the consumer and the meat industry, clearly support the use of the Duroc breed as a paternal component.
The effect of breed on litter size and milk yield in rabbits
Authors: Pałka Sylwia , Kmiecik Michał , Kozioł Konrad , Otwinowska-Mindur Agnieszka , Migdał Łukasz , Bieniek Józef
Published: December 2019

The aim of the study was to determine the influence of breed on litter size and milk yield in rabbits.
The following breeds were analysed in the study: Californian Black (n=16), New Zealand White
(n=19), Popielno White (n=24), Blanc de Termonde (n=36) and Belgian Giant Grey (n=14). The study
was conducted on three consecutive litters. The litters were weighed up to 24 hours from birth and at 21
days of age to calculate the milk yield. The Belgian Giant Grey females were found to have the largest
litters (9.09 pups), while the litters of the New Zealand White rabbits were the smallest (6.47). In the
case of the Blanc de Termonde, Californian Black and Popielno White females, the mean litter size was
7.78, 7.50 and 7.46, respectively. The Blanc de Termonde rabbits had the highest milk yield (3.76) and
the Belgian Giant Grey females had the lowest (3.18).
Usefulness of pork meat quality classes criteria in assessing of its culinary value
Authors: Sieczkowska Halina , Andrzejczuk Agata , Zybert Andrzej , Krzęcio-Nieczyporuk Elżbieta , Antosik Katarzyna , Tarczyński Krystian , Maria Koćwin-Podsiadła Maria
Published: December 2019

The aim of the study was to determine the usefulness of criteria (pH, R1 and EC) used to determine pork quality classes (RFN, PSE, DFD and AM) in assessing culinary value characteristics of pork. The study was carried out on 320 fatteners from the mass population in the spring-autumn season. Rearing conditions, pre-slaughter handling and carcass handling were the same for all animals. The fatteners were similar in terms of hot carcass weight (87.09 ±4.05 kg) and lean meat content (56.68 ±3.01%). The statistically significant correlations found confirmed that basic pork quality criteria are suitable for assessment of selected parameters of culinary value that are important to the consumer. To obtain more precise conclusions regarding the suitability of basic pork quality criteria (pH1, pH24, pH48, R1, EC2 and EC24) for estimation of characteristics of culinary value, canonical analysis should be used to determine the relationships between two sets of variables: independent (basic criteria of pork quality classes) and dependent (basic culinary values of pork).
Ocena sprawności działań prewencyjnych Policji w Polsce
Authors: Gwardyński Robert , Kaczmarczyk Barbara
Published: December 2019

Policja jest formacją umundurowaną przeznaczoną do zapewnienia bezpieczeństwa i porządku publicznego. Pełni służebną rolę w odniesieniu do społeczeństwa. Realizuje swoje zadania w pionie prewencyjnym, kryminalnym oraz śledczym. Działalność służby policyjnej koncentruje się w głównej mierze na działaniach prewencyjnych, które mają na celu zapobiegnięcie przestępczości. Celem niniejszego opracowania jest dokonanie oceny utylitarnej skuteczności działań prewencyjnych polskiej Policji. Do realizacji wyżej zakreślonego celu wykorzystano metodę badania dokumentów. Głównym źródłem danych były ogólnodostępne dane statystyczne udostępnione przez polską Policję oraz komunikaty z badań przeprowadzonych przez Centrum Badania Opinii Społecznej. Badany okres przypadł na lata 2014-2017.
The role of tesmin in the physiology and pathogenesis
of human diseases
Authors: Grzegrzółka Jędrzej , Podhorska-Okołów Marzena , Krawczuk Zbigniew , Dzięgiel Piotr
Published: December 2019

Tesmin (Testis-specific metallothionein-like protein) was first observed during meiotic division of spermatocytes in mouse testis. Expression of tesmin was also found in somatic cells of various organs. In addition to the suggested function of regulating the meiotic division of germ cells, the cysteine-rich domains in tesmin structure allow to bind heavy metal ions. In addition, this protein acts as a co-activator of the nuclear mineralocorticoid receptor, which may affect the expression of many other genes. Tesmin could also potentially play a role in disease states such as: chronic obstructive pulmonary disease, osteoporosis, AIDS encephalopathy, as well as neoplasms: acute lymphoblastic leukemia, prostate cancer or non-small cell lung cancer. The above reports on the multifaceted role of tesmin in various disease processes suggest that it could be an interesting direction for further research, what this paper aims to present.
The use of chitosan-based biomaterials for the treatment of hard-healing wounds
Authors: Kędzierska Marta , Miłowska Katarzyna
Published: December 2019

Wound healing is a complex process that engages skin cells, the blood, the immune system and a number of circulating substances in the body. Infections, contamination of the wound or a vast area of damage complicate and delay the natural process of skin regeneration. The incidence of hard-to-heal wounds is an increasingly common problem, because they can significantly impair the quality of life of the patient. For this reason, it is extremely important to look for factors (drugs, dressings or other substances) that could accelerate and relieve wound healing. Among many compounds in the area of medical engineering interest, attention should be paid to natural polysaccharides, e.g. chitosan and alginate. This article is devoted to biomaterials that play an important role in the treatment of chronic wounds. These include the following: hydrogels, non-wovens, membranes and chitosan sponges as well as chitosan-alginate composites or chitosan composites combined with zinc oxide and nanosilver. The material, which has chitosan as a base, works on all stages of the healing process. Many in vitro, in vivo and clinical studies that provide the basis for using chitosan materials as a substitute for conventional bandages and dressings have been carried out. At the stage of hemostasis, it accelerates platelet aggregation and the formation of a fibrin clot. In the inflamed stage, they cause the proliferation of neutrophils and macrophages that cleanse the wound, releasing cytokines at the wound site. Studies have shown that chitosan mimics the native extracellular matrix, providing the optimal microenvironment for the wound.
Konsekwencje wyroku TSUE z dnia 03.10.2019r., sygn. akt C-260/18 w sprawie kredytów frankowych dla polskich konsumentów
Authors: Wilk Anna
Published: December 2019

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Car-following Model of Connected Cruise Control Vehicles to Mitigate Traffic Oscillations
Authors: Qin Yanyan , Wang Hao , Chen Quan , Ran Bin
Published: December 2019

With the aim of mitigating traffic oscillations, this paper extends a car-following model for Connected Cruise Control (CCC) systems by considering electronic throttle angles of multiple cars ahead. The linear stability condition of the proposed model is derived and numerical simulations are performed. It has been found that the proposed model is prominently better than the previous model, i.e. full velocity difference model, from the perspective of mitigating traffic oscillations. Additionally, the proposed model can also reduce fuel consumption, emissions, i.e. CO, HC and NOX, safety risk, and improve driving comfort at the same time. Simulation results suggest that the CCC car-following control design should consider the effect of multiple electronic throttle angles from the preceding cars.
System Optimum Fuzzy Traffic Assignment Problem
Authors: Temelcan Gizem , Gonce Kocken Hale , Albayrak Inci
Published: December 2019

This paper focuses on converting the system optimum traffic assignment problem (SO-TAP) to system optimum fuzzy traffic assignment problem (SO-FTAP). The SO-TAP aims to minimize the total system travel time on road network between the specified origin and destination points. Link travel time is taken as a linear function of fuzzy link flow; thus each link travel time is constructed as a triangular fuzzy number. The objective function is expressed in terms of link flows and link travel times in a non-linear form while satisfying the flow conservation constraints. The parameters of the problem are path lengths, number of lanes, average speed of a vehicle, vehicle length, clearance, spacing, link capacity and free flow travel time. Considering a road network, the path lengths and number of lanes are taken as crisp numbers. The average speed of a vehicle and vehicle length are imprecise in nature, so these are taken as triangular fuzzy numbers. Since the remaining parameters, that are clearance, spacing, link capacity and free flow travel time are determined by the average speed of a vehicle and vehicle length, they will be triangular fuzzy numbers. Finally, the original SO-TAP is converted to a fuzzy quadratic programming (FQP) problem, and it is solved using an existing approach from literature. A numerical experiment is illustrated.
Impact of Railway Investment on Regional Development – Case Study of Pomeranian Metropolitan Railway
Authors: Mankowski Cezary , Weiland Dariusz , Abramović Borna
Published: December 2019

From the regional development point of view new investments are always of great importance as they are mainly expected to boost the regional economy and thus improve the living standard of inhabitants. Also for the literature purposes a new case study on the impact of investments on regional development can be perceived as an added value to the state of the art and thus worthy to be explored. In this research the impact is measured in the following aspects: social, economic, innovation, and environmental, which stand also for the main assessment criteria. Just recently, an opportunity has appeared to explore this subject on the Pomeranian Metropolitan Railway (PMR), which started its operations on 1st September 2015, after five years of construction works and more than a 100-year long history. Thus, the paper presents the impact results of PMR on the development of the Pomeranian region, in the form of qualitative as well as quantitative assessments in the four aspects and on different levels of detail. The final conclusion states that the impact of PMR on the regional development has appeared to be negative in 33% and positive in 67%.