bluuebunny/crossref_metadata_2025 huggingface dataset:
Model for Knowledge Management with the Ontological Approach in Social Networks
Authors: Guevara Nancy Edith Ochoa , Suarez Javier Augusto Ríos , Arévalo Helio Henry Ramírez
Published: March 2018

The article shows the results of the structure of collective knowledge management (CKM), defined from the concept of research management of research groups in the university with the use of a semantic algorithm. The process begins with the creation of a site in the social network facebook with the subject of the investigative management in the university. Through a structure of dimension given by profile, role, category and subcategory making direct connection with a relational database called MySQL. Through the application of metadata and algorithm is expected to obtain the lessons learned from these groups during the development of their projects. The result is the proposal of a functional scheme that allows the design and creation of a collective knowledge management model as support for university research.   Keywords: Knowledge management, Collective knowledge, Knowledge model, Scientific Production
Setting time of ecological bricks with different percentage PET
Authors: Maldonado Andrea , Corvalan Angela , Cohenca Delia , Monteiro Magna
Published: March 2018

Raw materials and products environment friendly has led many authors to develop the area of bio-construction, especially in civil construction, using alternative materials to obtain new achievements. PET (Polyethylene terephthalate) bottles, widely used worldwide, have made it possible to produce very ambitious technological products for their energy and economic efficiency. This study is based on the application of discarded PET bottles for application in ecological building bricks. For this, samples with different PET percent were prepared. The samples were prepared in triplicate. These samples were subjected to tests to verify the optimum setting time/PET ratio. The tests were performed according to international standards and compared to the values of conventional bricks.Keywords: Environment friendly, set-up tests, bio-construction.
Cooling Curve Analysis Method using a Simplified Energy Balance
Authors: Rivera C. González , Villeda A. Amaro , Argáez M. Ramírez
Published: March 2018

In this work is described a new cooling curve analysis method focused on the experimental determination of the latent heat of phase changes and phase transformation kinetics.The method analyses the cooling process of a metallic sample, initially liquid that is contained into a cylindrical metallic mold, both of known weight, thermally isolated at its top and bottom. The method is based on a simplified energy balance associated with the experimental measurement of the temperature change of the sample during its cooling process. The method was applied experimentally to zinc and tin of commercial purity, initially liquids and contained into stainless steel molds in order to determine its ability to determine the latent heat of solidification. In order to validate the method, the obtained values of latent heat were compared with the values reported in thermochemical databases. The obtained results suggest that this method can be used to characterize the solidification of metals..Keywords: Solidification, Kinetics; Cooling curve analysis.
Ontología y Procesamiento de Lenguaje Natural
Authors: Moreno Denis Cedeño , Lombardo Miguel Vargas
Published: March 2018

At present, the convergence of several areas of knowledge has led to the design and implementation of ICT systems that support the integration of heterogeneous tools, such as artificial intelligence (AI), statistics and databases (BD), among others. Ontologies in computing are included in the world of AI and refer to formal representations of an area of knowledge or domain. The discipline that is in charge of the study and construction of tools to accelerate the process of creation of ontologies from the natural language is the ontological engineering. In this paper, we propose a knowledge management model based on the clinical histories of patients (HC) in Panama, based on information extraction (EI), natural language processing (PLN) and the development of a domain ontology.Keywords: Knowledge, information extraction, ontology, automatic population of ontologies, natural language processing.
Arquitectura Inteligente CPPS Integrada en el Uso de la Norma IEC-61499, con Bloque de Funciones Altamente Adaptables en la Industria 4.0
Authors: Murillo Félix M. , Díaz Darío J.
Published: March 2018

Today, we are experiencing what it is being labelled as the Fourth Industrial Revolution (Industry 4.0) in terms of automation and control systems of cyber - physical production environments. These systems not only allow access to many innovative features based on network connections, but they also provide access to the world of the Internet of Things (IoT).  It is in this context that IoT changes the ways to link new technologies in order to obtain more efficient, intelligent, flexible and adaptable production systems; thus becoming an interdependence of the product itself that the companies wish to commercialize. Cyber- Physical Production Systems (CPPS) have the advantages of granular communications, common electric bandwidth for all users regardless of data speeds, compatibility in connection with free or guided space communication links and with the major compatibility with intensity modulation. IEC 61499 is generally based on a generic architecture, with specific software requirements, development rules that allow for portability and device configuration.Keywords: IoT, configuration, communication, CPPS, Industry 4.0, smart.
Eliminación/Degradación de Triazinas Mediante Biorreactor de Membrana con Post-Tratamiento de Ozonización
Authors: Rodríguez E.D. Vásquez , Llamas M.J. Moya , Del Hombre Bueno M.A. Bernal-Romero , Trapote Arturo , Rico Daniel Prats
Published: March 2018

The aim of the research was to evaluate the removal of micropollutants in a combined system MBR + ozonation. The research was carried out in a MBR scale laboratory plant which was fed with synthetic wastewater, doped with simazine (SIM), atrazine (ATZ) and terbutilazine (TBZ). The MBR operational conditions were: hydraulic retention time (HRT) of 20 h, organic loading rate (OLR) of 0.23 KgCOD/KgSSV·day, sludge retention time (SRT) of 30 d, and flux of 5.5 LMH. Two ozone doses were tested: low dose (16 mg O3/L) and high dose (45 mg O3/L). The removal eficiency of organic matter was 96%. For the studied triazines, low biodegradation effiencies were reached by biological treatment (MBR): 57%, 53% and 63% for SIM, ATZ and TBZ, respectively. The complementary treatment of ozonation improved the quality  of the effluents. At low ozonation dose the overall removal efficiencies increased to 95%, 92% and 96% for SIM, ATZ and TBZ, respectively. At high ozonization dose the overall removal efficiencies were 98%, 97% and 97 % for SIM, ATZ and TBZ, respectively, percentages slightly higher than those obtained at low dose. The results showed the combination of MBR + O3 is effective to remove micropollutants from wastewater, contributing to the preservation of a good ecological state of water bodies.Keywords: Bioreactor, Membrane, Ozone, Triazines, Herbicides.
Monitoreo de Dinoflagelados Causantes de Ciguatera en las Aguas de Punta Galeta, Colón, Panamá
Authors: González Alexander , Fábrega José , Broce Kathia
Published: March 2018

Los océanos son la clave para la conservación de la vida y son la conexión para los ecosistemas y el mercado mundial. Los seres humanos somos atraídos a las zonas costeras por los múltiples beneficios que nos brinda, siendo el principal la pesca. A través de los productos del mar que consumimos, podemos resultar contaminados con toxinas que producen unos microorganismos acuáticos llamados  dinoflagelados que a su vez pueden causar la enfermedad ciguatera. En Panamá dentro el Paisaje Protegido de Punta Galeta se está realizando una investigación desde junio 2016 hasta la fecha y se han encontrado tres géneros de dinoflagelados que pueden causar esta enfermedad (Gambierdiscus, Prorocentrum y Ostreopsis), siendo el primero el más abundante. Los datos  obtenidos de pH en campo van en un rango de 8.02 hasta 8.63 siendo estos de poca variación, mientras que en los análisis de laboratorio para estos mismos cinco puntos se han obtenido datos en un rango de 7.89 a 8.33. Ambos resultados indican que las condiciones de pH para Punta Galeta son buenas ya que estudios previos determinan que el agua de mar presenta, de forma estable, pH comprendido entre 7-9 unidades, siendo 8 unidades el valor normal en superficie.Palabras claves: Ciguatera, dinoflagelados, mariscos, pH, algas.
Induction Motor Fault Modeling Based on the Winding Function
Authors: Carrera Jorge , Franceschi Rafael , Gonzalez Guadalupe
Published: March 2018

The deterioration in electrical equipment, is normal and its process begins as soon as the equipment is installed. Failure to inspect may cause faults. A failure in these devices can represent from thousands of dollars in losses of production to loss of lives, therfore, it is our responsibility as engineers to develop and apply techniques that ensure their optimal operation. There are several maintenance techniques, including condition monitoring which uses vibration and electrical data from motors/generators to diagnose faults. The objective of this work is to develop a computational model of an induction motor based on the winding function technique to model electrical and mechanical faults. This is the first step in order to proceed with a most comprehensive project about condition monitoring of induction machines under fault based on signal processing analysis.Keywords: faults, induction machines, winding function
Estudio de la Seguridad en Redes de Sensores Corporales aplicadas al Ámbito Sanitario
Authors: Díez Isabel De la Torre , Alonso Carmen Marina Benito , Castillo Gema , Alvarez Aránzazu Berbey
Published: March 2018

Nowadays, the technology has become necessary in daily aspects of everyday life, included healthcare and healthy lifestyle. Thus, in the last years has taken place an important development of Body Sensor Networks (BSN) to let a continuous monitoring. Security is becoming increasingly important in all areas related to Information Technology, and becomes even more important when patient’s health is involved. Confiability and privacy are necessary requirements for patients to feel secure with the sensors, but the reliability is necessary too, because if all measured data are lost or damage before reaching their destination, it cannot be made an adequate monitor or make the best diagnosis. The aim of this work is to provide a review of the security for BSN applied to the healthcare, in order to enable the development of applications to improve the patient's diagnosis and treatment with chronic diseases.Keywords: BSN, healthcare,confiability, reliability, chronic diseases.
Sensor Networks for Monitoring Metro-de-Medellín System Infrastructure
Authors: Meneses Gustavo
Published: March 2018

Structural health monitoring systems rely on electronic instrumentation and telemetry for improving maintenance tasks, preventing catastrophic failures and following the behavior of critical variables for infrastructure works such as tunnels, highways, bridges and buildings. A proposal for the development of sensor networks for monitoring Metro-de-Medellín system infrastructure is presented. The adopted approach is based on the deployment of generic sensing units that can operate either individually or by constituting wireless personal area networks un-der the MiWi P2P protocol from Microchip.  Different transceivers can be added to monitoring units that can act as gateways in order to allow collected data reach other networks, ranging from local area to metropolitan area coverage. Several sensors, digital and analog, can be attached to the generic units depending on the particular requirements of specific situations and monitoring locations. The results obtained from performed tests and the options considered for graphical user interfaces are also presented.Keywords: MiWi Protocol, Structural Health Monitoring, Short Data Service, Terrestrial Trunked Radio, Wireless Sensor Networks.
Contribuições da teoria antropológica do didático na formação de professores de matemática
Authors: Santos Cintia Melo dos , Freitas José Luiz Magalhães de
Published: March 2018

No presente artigo, composto de duas partes, trazemos algumas discussões e resultados de pesquisas sobre como a Teoria Antropológica do Didático (TAD) tem contribuído para estudos desenvolvidos no âmbito da formação de professores. Na primeira parte trazemos uma discussão teórica da TAD e alguns resultados de uma pesquisa de mestrado que investigou aspectos didáticos e matemáticos valorizados por uma professora indígena de matemática ao ensinar geometria plana e espacial a uma turma do 3º ano do ensino médio, em uma escola indígena da rede estadual do município de Dourados, em Mato Grosso do Sul. Na segunda parte realizamos uma discussão em torno do Percurso de Estudos e Pesquisas (PEP) como proposta metodológica para a formação continuada de professores de matemática, discussão está constituída de esboços iniciais de uma pesquisa doutoral em andamento.
História e cultura local na formação docente em Química
Authors: Regiani Anelise Maria
Published: March 2018

Este artigo descreve trabalho desenvolvido em salas de aula da licenciatura em química e do ensino médio urbano e rural para o ensino de química em uma perspectiva intercultural. O estado do Acre (Brasil) foi constituído a partir da ocupação de território na Floresta Amazônica por interesses econômicos nos denominados “surtos da borracha”. Planos de ensino e materiais didáticos foram escritos a partir do contexto histórico e social desta movimentação de pessoas e da aproximação do conhecimento de seringueiros e indígenas do conhecimento científico. As narrativas, experimentos e vivências foram propostas com base em trabalhos de campo, de laboratório e pesquisa bibliográfica. A dinâmica das atividades propostas oportunizou a formação de um docente mais humanista, bem como propiciou na escola média o aprendizado da ciência química e o reconhecimento do valor das populações da floresta pelos estudantes do centro urbano e o reconhecimento do próprio valor pelos estudantes da escola rural.
Potencialidades do filme de ficção Avatar para a alfabetização científica dos sujeitos no contexto da educação básica
Authors: Santos Wagner José dos , Silva Ivanderson Pereira da
Published: March 2018

Este estudo investigou as potencialidades do filme de ficção Avatar para o desenvolvimento de currículos cujo fio condutor é a abordagem Ciência, Tecnologia, Sociedade e Ambiente (CTSA) e que estão voltados para a alfabetização científica dos sujeitos no contexto da educação básica. Para isso, foram explorados os recursos metodológicos da etnografia de tela para explorar cenários problematizadores que favoreçam o processo de alfabetização científica dos sujeitos a partir do filme de ficção científica Avatar. Como resultados desse movimento de pesquisa, observamos que a partir de um trabalho voltado para a construção de currículos CTSA é possível problematizar através nas cenas do filme de ficção Avatar, questões relacionadas à origem da vida; sustentabilidade; fenômenos físicos como gravitação e magnetismo; a fauna e a flora; teoria da evolução das espécies; aspectos culturais, éticos e religiosos emergentes e necessários para o processo de alfabetização científica dos sujeitos. Além disso, o apelo visual do filme associado ao enredo envolvente pode contribuir para despertar nos alunos o interesse pela ciência, não só na área da biologia, mas também na sociologia, filosofia, ensino religioso, geografia, física e química. Os apontamentos feitos no trabalho demonstraram que o filme pode ajudar no desenvolvimento de um trabalho pedagógico nas diferentes áreas do conhecimento ou em projetos interdisciplinares.
Clinical studies on the use of Herbal Chitosan Spray for the clinical management of dog bitten wounds in veterinary practice
Authors: Mohan A. , Kumar B. Ramesh
Published: March 2018

Six dogs and six small ruminants presented with dog bitten wounds at different regions of the body were treated with Herbal Chitosan Spray. The clinical studies revealed the Herbal Chitosan spray was found to be superior in promoting healing process which may be recommended for management of dog bitten wounds.
Influence of high protein level along with mineral mixture and baking soda supplementation on growth performance and carcass quality in Tellicherry kids
Authors: Muthuramalingam T. , Jemimah E. Rachel , Gnanaraj P. Tensingh , Pothiappan P. , Devi T. and A. Shanmuga Sundaram , Sundaram A. Shanmuga
Published: March 2018

For studying the effect of accelerated feeding method on growth and carcass traits thirty male kids (aged 30 -45 days) of Tellicherry breed were divided into two groups, control (C) and test (T) groups. The control group kids were fed with concentrate feed consisting of 15% crude protein (CP) and 75% Total Digestible Nutrient (TDN). The test group kids were fed with concentrate feed containing of 21% crude Protein (CP) and 75% Total Digestible Nutrient (TDN). Significant (P less than 0.01) increase in body weight in average total body weight gain and average daily body weight were observed in both groups. Cost of production per kg live weight gain significantly (P less than 0.0001) reduced. High significant difference (P less than 0.01) was noticed in pre slaughter weight, carcass weight, dressed weight, dressing percentage, weight of stomach, head and liver. The present study concluded that feeding the kids with high protein level along with mineral mixure had significantly increased the body weight gain, growth performance, dressing percentage, carcass yield and quality.
“Being With Woman”: Is There a Cost for Midwives and Students Attending Traumatic Births?
Authors: Beck Cheryl Tatano , Anderson Barbara A.
Published: March 2018

Witnessing and/or providing care during a traumatic birth increases vulnerability to secondary traumatic stress, with potential effects on mental health of and attrition among the midwifery workforce. With the global shortage of the midwifery workforce, retention and peak functioning are critical to the well-being of childbearing women and their infants. PubMed, Scopus, CINAHL, and PsycINFO databases were searched to identify studies that examined secondary traumatic stress in both midwives and midwifery students. Fifteen studies were located from eight different countries. Four of these studies examined secondary traumatic stress in midwifery students and 11 in practicing midwives. This article discusses the limited research on secondary traumatic stress among midwives and students who have attended or witnessed traumatic births. The vulnerability and potential workforce attrition of midwives and students experiencing secondary traumatic stress are highlighted. The development of a comprehensive body of literature is needed on prevalence, impact, clinical implications, and healing strategies addressing this workforce issue.
Engaging and Supporting Fathers With Breastfeeding Partners
Authors: Johnston Jarold T. , LeRoy Amber
Published: March 2018

This article explores the need for healthcare professionals to address fathers’ concerns regarding engagement and supportiveness with breastfeeding partners. Fathers often feel left out during the partner’s perinatal care and do not get the same amount of education and support, especially regarding breastfeeding. The desire to have practical information that is specifically related to the paternal figure is a common complaint among fathers. Educational classes involving childcare and breastfeeding information provide positive results regarding an increase in breastfeeding rates. The purpose of this article is to address the need to acquire interventions that engage and assist fathers with supporting their partners. Currently, two known programs exist to attempt to speak directly to fathers seeking practical breastfeeding advice: “Dads and Breastfeeding” and “Cribside Assistance.” However, there is still a lack of research regarding effective interventions that assist fathers and increase breastfeeding duration.
BAP: Testing of a Breastfeeding History Questionnaire to Identify Mothers at Risk for Postpartum Formula Supplementation
Authors: Burns Whitney , Rovnyak Virginia , Friedman Caroline , Drake Emily , Hornsby Paige , Kellams Ann
Published: March 2018

Background: The objective of this study was to test a breastfeeding history questionnaire to predict inhospital formula supplementation.

Methods: A breastfeeding questionnaire named BAP, an abbreviation based on three questions, was conceptualized and implemented in clinical practice. Primary outcome was formula supplementation during the postpartum hospital stay.

Results: Multiparous women with BAP scores of 1 or less were over four times more likely to use formula during the postpartum hospital stay than women with BAP scores of 2 or greater (RR = 4.35, 95% CI [2.47, 7.65]; p < .001). Additionally, multiparous mothers with BAP scores of 1 or less were more likely to use formula than primiparous mothers (RR = 1.93, 95% CI [1.47, 2.52]; p < .001). The adjusted odds of formula use were eight times greater for women with the lower BAP score (aOR 8.04, 95% CI [3.10, 20.86]; p < .001).

Conclusions: The BAP tool can be used to identify multiparous women most at risk for early formula use, thereby allowing targeted referral to breastfeeding support services.
Effect Of The IFRS Adoption On The Cost Of Capital: Evidence From Korea
Authors: Wook-Bin Leem , Yuk Jee Hoon
Published: March 2018

This study investigates whether the cost of capital of Korean listed firms was substantially reduced after the IFRS adoption in long-term aspect and which firms listed in KOSPI or KOSDAQ market had been more enjoyed the benefit. Prior studies related to this subject don’t provided consistent results and have limitations of insufficiency of research periods and generalization problem. Therefore, this study analyzes the positive effect of the IFRS adoption in Korea using long-term based approach and differential measurements (CAPM and WACC) to facilitate generalization. Results of the study found that the cost of capital of Korean listed firms had been significantly reduced during 5 years after the IFRS adoption. In addition, the cost of capital of KOSPI listed firms was reduced more than KOSDAQ listed firms. The results provide meaningful implications to evaluate the effects of IFRS adoption on the cost of capital and to assess accomplishment of fundamental purpose of the IFRS adoption in Korea.
A Study On Relation Between Accounting Treatment For Capitalization Of R&D Expenditure And Earnings Management In The Korean Defense Industry
Authors: Im Kyungkook , Im Chaechang
Published: March 2018

Overall, this paper examines and finds the relation between the ratio of accounting treatment for capitalization of research and development expenditure (RCR&D). The theoretical model derived from panel analysis resource on Korean defense industry information from 2009 to 2014 indicates that the RCR&D positively affect earnings management direction through a significantly positive relationship. Also, the effect of large defense industry firms’ RCR&D on earnings management direction is higher than that of small ones despite that large defense industry firms have discretionary accruals in (-) direction compared with small ones. In addition, the effect of defense industry firms’ RCR&D on earnings management direction is strong especially in earnings increasing group. Also the change of RCR&D is positive influence on discretionary accruals. This enforces that RCR&D can be related with earnings management direction.
NILAI-NILAI PENDIDIKAN ISLAM PADA KISAH NABI IBRAHIM
Authors: Hasan Zainol
Published: March 2018

Merging two Methods between lecturing and Group Investigation ar Al-Qur'an is essentially dedicated to mankind wherever they are. One method to bring the Qur'an closer to human is through the stories that are presented in Al-Quran. This paper would like to investigate more about how the description of the Ibrahim story and its relevance to the values of Islamic education. The results found the data of the verses relating to the story of the prophet Ibrahim AS, as many as 186 verses spread in 25 surah. From  25 surah there are 17 (seventeen) surah down in Mecca, and 8 (eight) surah down in Medina. Furthermore, the values of Islamic education contained in the story of Prophet Ibrahim AS consists of the first; the value of uluhiyah, namely the values of faith and the values of worship; the value of uluhiyah is the value that God offers through his rasul who are immortal and never changed; it is fundamental and contains absoluteness for human life. Secondly, the values of humanity, namely the values that come from human beings, that is grown by human agreement, lived and thrived in human civilization. It is dynamic and contains truth that is relative and limited by space and time. In the Islamic context, human values can be identified with moral values. These values are honesty (shiddiq), trustworthiness (amanah), truth-telling (tabligh), intelligence (fathanah), love, patience, exemplary, and democracy.
REKONTEKSTUALISASI MINAT MUZAKKI DI BAZNAS KABUPATEN SUMENEP MELALUI PROFESIONALISME PENGELOLAAN ZAKAT BERBASIS PARTISIPATORIS
Authors: Harun AR Mariatul Qibtiyah , Susanto Edi
Published: March 2018

The high potential number of Muzakki in Sumenep needs a well organized management. Additional condition to be done for this empowerment is that the Muzakki, both individually and company, trust their zakat management on the Amil Zakat. The research focuses  are: how was the real condition of the potential Muzakki in Sumenep? How is the process of zakat collection, management and distribution in BAZNAS Sumenep? What are the problems faced by BAZNAS Sumenep in order to gain professionalism in managing Zakat? And also how to improve the zakat manager’s skill? The approach used in this study is action research, participatory action research. The object of the study is BAZNAS Sumenep and BAZNAS Karanganyar Solo as the reference which is already successful in terms of professional management. The data collection used are documentation, interview, observation, and Focus group discussion (FGD). The technique of data analysis through 5 steps activity planning, first, making potential local mapping by doing observation to BAZNAS Karanganyar Solo and FGD. Second, conducting Zakat seminar. The third, improving the BAZNAS  zakat organizer’s skill. Fourth, Social network development. Fifth, assistance, monitoring and evaluating process. The result shows that first, actually it is already potential in sumenep in the process of collecting Zakat, the people of sumenep is religious people who understand their responsibility to pay Zakat. Second, there is no serious attention on the management of Zakat, also on the supporting means. Third, the difficulties faced by BAZNAS Sumenep are the means and infrastructure of the office, the lack of working accountability, the Muzakki did not receive the report of Zakat management, the lack of socialization, support and guidance from local government. Fourth, organizing innovation program of BAZNAS Sumenep by doing some cooperations with SKPD, stakeholders, the board of Amil Zakat, universities and Islamic Boarding House.
Growth of Spinach Plant (Amaranthus tricolor L.) by Application of Kascing Organic Fertilizer and Bamboo Leaf Litter Mulch
Authors: Setiawati Tia , Rahmawati Fitryasari , Supriatun Titin
Published: March 2018

Spinach (Amaranthus tricolor L.). is one of the vegetables that are economically valuable with high nutrient content to support public health so that its production needs to be improved. The purpose of study was to obtained the optimal dosage of kascing organic fertilizer and the thickness of the bamboo leaf litter mulch on increase growth of spinach. The research used experimental method with randomize block design (RBD), two factors and three replications. The first factor was the adding of kascing organic fertilizer (K), consist of five levels doses, i.e: without adding kascing fertilizer (k0); 2.5 g/kg of soil (k1); 5 g/kg of soil (k2); 7.5 g/kg of soil (k3) and 10 g/kg of soil (k4). The second factor was bamboo leaf litter mulch (M), consist of three levels, i.e: without mulch (m0); mulch with thickness of 2.5 cm (m1); mulch with thickness of 5 cm (m2). Parameter observed were the plant height, the number of leaves, the leaf area, the shoot dry weight and the root dry weight. The data obtained was analyze using Anova and Duncan’s Multiple Range Test (α=5%). The results showed that interaction between dosage of kascing fertilizer with bamboos leaves litter mulch could increase the average of plant height (50.17 cm), number of leaves (40.33 leaves), shoot dry weight (5.77 g) and root dry weight (1.78 g) of spinach. Commonly, kascing organic fertilizer dose of 5 g/kg of soil (k2) and bamboos leaves litter mulch on the tickness of 5 cm (m2) combination was the best treatment for growth of spinach.

Keywords: bamboo leaf litter, mulch, organic fertilizer of kascing, spinach
Study of Insect Diversity in Rice Agroecosystem in Karawang West Java
Authors: Siriyah Siti Latifatus , Khamid Miftakhul B.R. , Bayfurqon Fawzy M
Published: March 2018

Insects were collected from rice fields in Karawang West Java. Since insects are dominant in Rice field, their role in the ecosystem are important regarding the rice production. Therefore, the occurance of insect species and their role in ecosystem are important to understand. The aim of this reasearch was to study the insect occurance in rice field in Karawang to obtain the potential candidate for biological control agent. The insects were collected using sweep net, pit fall trap and light trap. Nine insect orders were collected and 49 morphospecies were identified including insect pest, parasitoids, predator, tourist and detritivore. Paederus sp., Cyrtohinus and Micraspis sp., were the most abundant entomophagous insect that is potential candidate for biological control agent in Karawang.

Keywords: insect, insect diversity, rice fields, karawang
Magnetic and Microwave Absorbing of Mn(1-x)NdxFe2O4 Synthesized with Co-Precipitation Method
Authors: Adha Mia , Yunasfi Y. , Nurhasni N.
Published: March 2018

Characterization of magnetic and microwave absorbing properties of Mn(1-x)NdxFe2O4 synthesized with co-precipitation method have been carried out. Mn(1-x)NdxFe2O4 (with x = 0.0; 0.4; and 0.8) powders was synthesized from mixture of NiCl2, NdCl3 and FeCl3 in mole ratio. Mixing of this powders were soluted with NH4OH 4M up to pH = 9.0. The formed precipitate were washed with demineralized water up to pH = 7.0 and then dryed at 120 oC for 5 h, sintered at 1200 for 3 h. Phase identification with X-ray diffractometer (XRD) have formed composite multiphases, which indicated by the appearance of MnFe2O4, NdFeO3 and Fe2O3 phase. The magnetic measurement using VSM (vibrating sample magnetometer) showed that the sample exhibited a ferromagnetic behavior, the Ms value is lower (in the range of 30 – 11 emu/g) while the Hc value is greater (in the range of 111 – 132 Oe) with increased concentration of Nd3+ ion (x values). Measurement by VNA (Vector Network Analyzer) showed the ability of absorption of microwaves increased with increasing content of Nd3+ ion, the composition of x = 0.0 at about 70% and addition of Nd3+ ion up to composition x = 0.8 at about 91%.

Keywords: MnNd ferrite, co-precipitation methode, magnetic properties, microwave absorption
FeCrMnNiCSi Coating on Grey Cast Iron FC 25 Variable Gas Pressure on Thermal Arc Spray Method
Authors: Purwaningsih Hariyati , Putra Rifqi Tantyo , Raharjo Slamet , Rochiem Rochman , Purniawan Agung
Published: March 2018

One of the important components of motor fuel engine is cylinder liner. There is a compression and friction combustion process with a piston that produces mechanical energy in cylinder liner. This process introduced several problems that often arise, such as wear reducing because the piston is moving back and forth continuously causing gas leakage so that compression pressure is reduced. To prevent such damage it is necessary to coat the metal with other material that has better wear resistance. This study used FeCrMnNiCSi coating material deposited on Gray cast iron FC 25 by thermal arc spray method to analyze the influence of pressure air variation on morphology and mechanical properties. SEM analysis showed that the higher pressure on the coating process results smaller particles thereby decreasing the porosity. Roughness testing also showed a decrease in the higher pressure, at a pressure of 6 bar of 127.333 μm. Microhardness showed that the 6 bar pressure indicating hardness was 639.8 HV. At 6 bar pressure also obtained the highest abrasion resistance value is 29.66 rotation / mg. The value of adhesion strength in the 4 bar pressure variables shows the optimum value compared with other pressure variations of 15.02 MPa.

Keywords: cylinder liner, thermal arc-spray, pressure ambient
The Development of Web-based Graphical User Interface for Learning and Fitting Generalized Estimating Equation with Spline Smoothers
Authors: Tirta Made , Anggraeni Dian
Published: March 2018

Statistical modeling (regression analyses) have been growing rapidly into various directions to accommodate various data conditions. For longitudinal or repeated measures data, one of the suitable models is GEE (Generalized Estimating Equation). In practice, to do complex modeling such as GEE, the use of statistical software is necessary and it is available on free open source software R. However, GEE modeling on R can only be access through command line interface (CLI), and most practical researchers very much rely on Graphical User Interface (GUI) based statistics software. To make access to GEE (both order 1 and 2) much easier, we developed, using Shiny toolkit, two types of web-based GUI, standard pull down menu type and e-module type (with narrative theories) that can be utilized for learning and fitting GEE. This paper discusses the features of the interfaces and illustrates the use of them.

Keywords: longitudinal data, Generalized Estimating Equation (GEE), exponential families, statistical modeling, correlated response, nonparametric, natural splines, shiny toolkit
Hacia un urbanismo emergente: La ciudad viva
Authors: Gallegos Rodríguez Reyes
Published: March 2018

Este artículo muestra algunos resultados de mi tesis doctoral, cuya fuente documental es la contenida en el Proyecto La ciudad viva (LCV), iniciado en 2008 por la Junta de Andalucía con el propósito de revisar las disfunciones de la ciudad contemporánea y aportar soluciones, logrando ser el canal de reflexión y participación más utilizado en nuestro país y en el ámbito urbanístico durante años.La hipótesis defiende que las múltiples voces y perspectivas contenidas en LCV, descubren nuevas lógicas urbanas que necesitamos explorar si queremos un futuro diferente. Para lo cual, y tras analizar y relacionar los contenidos (generados en la última década por corresponsales repartidos por el todo el mundo), se identifican una serie de ZONAS que, mediante una serie de RELATOS literarios, hacen referencia a sus numerosas fuentes multidisciplinares, y son:Zona 1. Generación rotonda. La crisis de la habitabilidad contemporánea.Zona 2. Flânerie es femenino. Caminar por la ciudad con perspectiva de género.Zona 3. Periferias. La intervención pública en los barrios europeos de vivienda social.Zona 4. Derecho a techo. Alternativas habitacionales.Los relatos, que observan y analizan “la ciudad heredada”, terminan en “itinerarios hacia un urbanismo emergente” que localizan propuestas con nuevos instrumentos para “la ciudad por hacer”. Abstract: This article shows some results of my doctoral thesis. The documentary source is included in the "The living city" Project (TLC), started in 2008 by the Andalusian Government to revise the dysfunctions of the contemporary city and provide solutions. It became the most used rethinking and participation channel in our country and in the urban environment for years.The hypothesis advocates that the multiple voices and perspectives included in TLC discover new urban logics that we need to explore if we desire a different future. To achieve that goal and after analyzing and linking the contents (many articles and posts generated during the last decade by different people from all over the world), several AREAS are being identified and, through several literary STORIES, they refer to many multidisciplinar sources. These areas are: Area 1. Roundabout generation, the crisis of contemporary habitability.Area 2. Flânerie is feminine, a pedestrian city with a gender perspective.Area 3. Peripheries, the public intervention in European social housing neighborhoods.Area 4. Right to housing; housing alternatives.Stories, that observe and analyze "the inherited city", end up in “itineraries "towards an emerging urban planning", that locate through diagrams and proposals, new tools and applications for "the to be done city".
Quick, Easy and Economic Mineralogical Studies of Flooded Chalk for EOR Experiments Using Raman Spectroscopy
Authors: Borromeo Laura , Egeland Nina , Wetrhus Minde Mona , Zimmermann Udo , Andò Sergio , Madland Merete Vadla , Korsnes Reidar Inge
Published: March 2018

Understanding the chalk-fluid interactions and the associated mineralogical and mechanical alteration at sub-micron scale are major goals in Enhanced Oil Recovery. Mechanical strength, porosity, and permeability of chalk are linked to mineral dissolution that occurs during brine injections, and affect the reservoir potential. This paper presents a novel "single grain" methodology to recognize the varieties of carbonates in rocks and loose sediments: Raman spectroscopy is a non-destructive, quick, and user-friendly technique representing a powerful tool to identify minerals down to 1 µm. An innovative working technique for oil exploration is proposed, as the mineralogy of micron-sized crystals grown in two flooded chalk samples (Liége, Belgium) was successfully investigated by Raman spectroscopy. The drilled chalk cores were flooded with MgCl2 for c. 1.5 (Long Term Test) and 3 years (Ultra Long Term Test) under North Sea reservoir conditions (Long Term Test: 130°C, 1 PV/day, 9.3 MPa effective stress; Ultra Long Term Test: 130°C, varying between 1-3 PV/day, 10.4 MPa effective stress). Raman spectroscopy was able to identify the presence of recrystallized magnesite along the core of the Long Term Test up to 4 cm from the injection surface, down to the crystal size of 1-2 µm. In the Ultra Long Term Test core the growth of MgCO3 affected nearly the entire core (7 cm). In both samples, no dolomite or high-magnesium calcite secondary growth could be detected when analysing 557 and 90 Raman spectra on the Long and Ultra Long Term Test, respectively. This study can offer Raman spectroscopy as a breakthrough tool in petroleum exploration of unconventional reservoirs, due to its quickness, spatial resolution, and non-destructive acquisition of data. These characteristics would encourage its use coupled with electron microscopes and energy dispersive systems or even electron microprobe studies.
Learning with Abductive-Pictorial Strategy for Improving Mathematical Proofing Ability of Prospective Mathematics Teachers
Authors: Muzaki Ahmad , KUSUMAH YAYA S , SABANDAR JOZUA
Published: March 2018

This study aims to improve the mathematical proofing ability of prospective mathematics teachers in IKIP Mataram using Abductive - Pictorial Strategy (which will be abbreviated as APS). This study used an explanatory sequential design, a combination of quantitative and qualitative methods in sequence. The first stage is done by quantitative method and the second stage with qualitative method. Quantitative method is used to obtain measurable data and qualitative method is used to explore the findings obtained from the quantitative stage. This research considers the Prior Mathematical Knowledge (PMK) factor of prospective teacher. The results showed that the improvement of students' mathematical proofing ability in high, medium, and low PMK categories with APS better than Conventional Learning (CL). The mean improvement of students' mathematical proofing ability in high PMK category which got learning with APS and PK included in medium category. The mean improvement of students' mathematical proofing ability in medium PMK category with APS included in medium category, with CL included in low category. The mean improvement of students' mathematical proofing ability in the low PMK category with APS and CL included in low category.
The description of students’ mathematical problem-solving skill and self-regulation
Authors: Nurwijayanti Ani , Jazuli Akhmad , Widyastuti Erni
Published: March 2018

The research aimed to describe the students’ mathematics problem-solving skill and self-regulation in SMP Negeri 8 Purwokerto used Miles and Huberman’s model of cover reduction, serve, and conclusion. The data source of this research were eight graders of class F by using purposive sampling. The students grouped into three categories according to the mid-term result. The categories were: high, mediocre, and low scores. The data was collected using tests, questionnaire, interview, and documentation. This research concluded that the students’ mathematics problem-solving skill from those three categories was different. The high score students’ group had a better problem-solving skill compared to the students in the mediocre or the low categories. However, the self-regulation from these three groups did not have a significant difference. It was still at the developing level. Thus, it could be concluded that the students’ self-regulation did not affect the ability to solve mathematical problems.
Plant vs. Animal, Which is the Most Prefer Understanding of Evolution?
Authors: Mahbubah Hana Gardenia , Hidayat Topik , Supriatno Bambang
Published: March 2018

Evolution is one of the main subjects of biology taught in science colleges. Unfortunately, students seem less attention to this subject. In the subject of evolution, the lesson commonly uses the animal as a model to improve the students understanding. The purpose of this study is to compare the ability of tree thinking students who use animals and plants as a model in the evolution lesson. Tree thinking refers to an approach to evolution that emphasizes reading and interpreting phylogenetic tree. This study involved 20 undergraduate students enrolled in the evolution course for biology majors at Universitas Pendidikan Indonesia (UPI). The tree thinking ability of students was measured using Tree Thinking Concept Inventory (TTCI) of Naegle with a little modification. In this test, we analyzed student preferences using animal or plant models using phylogenetic tree diagrams. Results showed that students’ TTCI score was higher when using animal models (65.42%) than plant models (55%). These results suggested that students remain to prefer animal models compare to plant models to study evolution. Nevertheless, the use of plants as models can be an alternative to learning evolution in the future.
The changing of oral argumentation process of grade XI students through Socratic dialogue
Authors: Pangestika I W , Ramli M , Nurmiyati Nurmiyati
Published: March 2018

Arguments are one of the important purposes in the modern era of learning because it is the basic step to promote student’s critical thinking process and science literacy. Argumentation process can be trained through interactive dialogue that provides opportunities for students to argue. This research aims to change oral argumentation process in biology class of high school through the application of the Socratic Dialogue. The participants were students of grade XI science in one high school located in Surakarta, selected purposively. A classroom action research was done collaboratively between student teacher, lecturers, and teacher, follow the spiral cycles of research by Stephen Kemmis. During the implementation of research, the audio recorder has prepared to record the dialogue and arguments of the students. Next, data recorded that was converted to a dialogue transcript analyzed qualitatively using the Toulmin Argumentation Patterns (TAP). Another data source is teacher’s reflective diaries that contained notes during the learning process. The result shows that student’s oral argumentation process found were only claiming supported by weak warrants. Implementation of the Socratic Dialogue brings positive changes in oral argumentation process of the students, proven by the complete argumentation pattern include claims, data, warrants, backings, and rebuttals at the end of the research cycle. A classroom action research which is developed collaboratively and implement interactive dialogue also inquiry learning is highly recommended to change student’s oral argumentation process.
Improving Problem Solving Skill and Self Regulated Learning of Senior High School Students through Scientific Approach using Quantum Learning strategy
Authors: Sudirman M , Fatimah S , Jupri A
Published: March 2018

This research is quasi experiment with control group pretest-postest design. The sampel in this research using the techique of purposive sampling so the samples used were two classes of the 11th grade students of SMAN 14 Bandung in the academic year 2017/2018. The experiment group uses saintific approach using Quantum Learning strategy and control group uses saintific approach. In collecting the data the researcher will use the test of problem solving ability and self regulated learning as the instrument. The aims of this research are to:1)find out the improvement of students mathematical problem solving through scientific approach using Quantum Learning study, 2) find out students self regulated learning through scientific approach using Quantum Learning.
Identify Students’ Concept Understanding Using Three-Tier Multiple Choice Questions (TTMCs) on Stoichiometry
Authors: Anintia Rinayu , Sadhu Satya , Annisa Desfi
Published: March 2018

The research addressed 1) to develop a three-tier test, 2) to identify students’ concept understanding in stoichiometry. The design of this research is descriptive. Cluster sampling technique with proportional measuring is used to collect 176 selected samples from three different schools. Analyses were conducted to check on content validity, empirical validity, discrimination index, and difficulty index. Findings of the pilot study showed that the content validity is in the range of 0.56 – 1.00 score. The empirical validity value was found to be appropriate and good enough with 28 out of 30 questions are valid with ttable 1.99, reliability is 0.47. Discrimination index was found to be appropriate with 3.57% question in excellent, 42.86% question in good, 42.86% question in fair, and 10.71% question in poor. Difficulty was found to be appropriate with 17.86% questions in convenient and 82.14% question in fair. Identification of students’ concept understanding using three-tier showed that 33.10% of students comprehend the concept correctly, 4.06% students are less understand the concept, 31.53%  students are in misconception, 19.50%  students did not comprehend the concept, and 11.81% students are guessing.