bluuebunny/crossref_metadata_2025 huggingface dataset:
A Production Characterization of the Eagle Ford Shale, Texas - A Bayesian Analysis Approach
Authors: Moridis Nefeli , Soltanpour Yasser , Medina-Cetina Zenon , Lee W. John , Blasingame Thomas A.
Published: May 2017

We began this research by asking "Can we use Bayes' theorem to supplement available decline models and improve the accuracy of our estimates of ultimate recovery?" This study focuses on the Eagle Ford Shale, and in particular, on oil wells in the Greater Core Eagle Ford Area. Our goal was to develop a method based on a probabilistic approach to identify, characterize, and better model well production based on standard decline models

To attempt to answer this question, we first obtained data for 68 wells in the Greater Core of the Eagle Ford Shale, Texas. As process, we eliminated the wells that did not have enough production data, wells that did not show a production decline and wells that had too much data noise, leaving eight wells. We then performed decline curve analysis (DCA) using the Modified Hyperbolic (MH) and Power-Law Exponential (PLE) models (the two most common DCA models), consisting in user-guided analysis software. Then, the Bayesian paradigm was implemented to calibrate the same two models on the same set of wells.

The primary focus of the research was the implementation of the Bayesian paradigm on the eight-well data set. We first performed a "best fit" parameter estimation using least squares optimization, which provided an optimized set of parameters for the two decline models. This was followed by using the Markov Chain Monte Carlo (MCMC) integration of the Bayesian posterior function for each model, which provided a full probabilistic description of its parameters. This allowed for the simulation of a number of likely realizations of the decline curves, from which first order statistics were computed to provide a confidence metric on the calibration of each model as applied to the production data of each well.

Results showed variation on the calibration of the MH and PLE models. The forward models (MH and PLE) overestimated the ultimate recovery in the majority of the wells compared with the Bayesian calibrations, proving that the Bayesian paradigm was able to capture a more accurate trend of the data and thus able to determine more accurate estimates of reserves.

In industry, the same decline models are used for unconventional wells as for conventional wells, even though we know that the same models may not apply. Based on the proposed results, we believe that Bayesian inference yields more accurate estimates of ultimate recovery for unconventional reservoirs than deterministic DCA methods. Moreover, it provides a measure of confidence on the prediction of production as a function of varying data and varying decline models.
3D Modeling of Carbonate Rock Porous Media and Estimation of Petrophysical Parameters
Authors: Silveira T. M. , Silva W. G. , Couto P. , Alves J. L.
Published: May 2017

Pre-salt carbonate reservoirs are known by their huge heterogeneity and their porous system present a challenge regarding reservoir characterization, petrophysical parameters analysis and full understanding of fluid flow dynamics. Besides that, the cost of obtaining rock samples from the reservoir and the destructive nature of most experimental tests increase the interest in develop the concept of Digital Rock Physics (DRP); DRP is based on high resolution imaging and three-dimensional digitizing aiming to investigate and calculate the physical and fluid flow properties of the porous media. In this approach, this work uses X-Ray computed microtomography, digital reconstruction and image processing to achieve the 3D modeling of porous media and estimate petrophysical parameters of Pre-Salt lacustrine carbonate analog samples: coquinas from Morro do Chaves Formation, Northeast Brazil. Experimental data is used to validate the predictions. The results suggest that an important step in the rock digital reconstruction refers to the segmentation process and the high computational cost is a limiting factor to generate the porous media model in three dimensions. Despite this, the estimated physical properties are in good agreement with the previous measured experimental values and the generated 3D model will be widely used in numerical flow simulations in the next steps of this study.
Logging While Drilling Fluid Sampling and Real Time Formation Evaluation, An Approach for a Successful Sampling Operation
Authors: Correa D. , Barbosa A.
Published: May 2017

Operational execution of Fluid Sampling technologies in the logging-while-drilling (LWD) environment compared with Wireline requires a different set up and allows new operational capabilities for LWD. The objective of this paper is to identify what are the jobs operational risks, in order to select the best LWD technologies and operational approach to identify and mitigate these risks while drilling, resulting in the fastest and cleanest reservoir sample. LWD fluid sampling technology brings three new operational capabilities to this type of service: ability to select pad orientation; drilling fluid flow is required to keep the BHA energized and real time (RT) data telemetry and; capability of operating in HAHZ wellbores without additional risk. To take full advantage of these new capabilities, there must be a full understanding of the relationship between wellbore and formation, analyzing subjects such as filtrate invasion profile, borehole stability, sand production, petrophysics and LWD FE. The ability to choose pad direction, coupled with high end technologies, such as NMR and resistivity images generate important capabilities to be evaluated considering formation quality and borehole condition, allowing the selection, not only of the best depth to sample, considering petrophysical properties, but also the optimum pad direction, considering borehole conditions. Images allow the identification of drilling induced fractures, breakout, faults and thin bed, making it possible for RT interpretation for optimum pad direction, avoiding undesired features. Prior geomechanics study help identify issues that might come up during fluid sampling operation, such as breakout, sand production and borehole failure related to bedding plane. Technologies such as acoustic, NMR and images allow RT evaluation of these issues and the ability to select pad orientation and nonstop drilling fluid flowing may result in correcting these issues. Filtrate invasion profile generates complex geometries with lateral displacements and gravitational segregations. Prior study of invasion profile reservoir and drilling fluid properties, thin bed analysis and reservoir/non-reservoir interface analysis must be considered to achieve optimum operational time. This paper presents a technical and operational approach for LWD fluid sampling operations, regarding FE, geomechanics and fluid invasion profiles, which minimizes operational risk and optimizes sampling time.
Agricultural Conservation Planning Framework: 3. Land Use and Field Boundary Database Development and Structure
Authors: Tomer Mark D. , James David E. , Sandoval‐Green Claudette M. J.
Published: May 2017

Conservation planning information is important for identifying options for watershed water quality improvement and can be developed for use at field, farm, and watershed scales. Translation across scales is a key issue impeding progress at watershed scales because watershed improvement goals must be connected with implementation of farm‐ and field‐level conservation practices to demonstrate success. This is particularly true when examining alternatives for “trap and treat” practices implemented at agricultural‐field edges to control (or influence) water flows through fields, landscapes, and riparian corridors within agricultural watersheds. We propose that database structures used in developing conservation planning information can achieve translation across conservation‐planning scales, and we developed the Agricultural Conservation Planning Framework (ACPF) to enable practical planning applications. The ACPF comprises a planning concept, a database to facilitate field‐level and watershed‐scale analyses, and an ArcGIS toolbox with Python scripts to identify specific options for placement of conservation practices. This paper appends two prior publications and describes the structure of the ACPF database, which contains land use, crop history, and soils information and is available for download for 6091 HUC12 watersheds located across Iowa, Illinois, Minnesota, and parts of Kansas, Missouri, Nebraska, and Wisconsin and comprises information on 2.74 × 106 agricultural fields (available through http://northcentralwater.org/acpf/). Sample results examining land use trends across Iowa and Illinois are presented here to demonstrate potential uses of the database. While designed for use with the ACPF toolbox, users are welcome to use the ACPF watershed data in a variety of planning and modeling approaches.

Core Ideas

Water quality improvement must meet watershed goals through farm‐level measures.

Planning data can help better connect farm implementation and watershed outcomes.

We developed a database to help develop watershed plans through farm‐level options.

The database is available for >6000 HUC12 watersheds in the US Midwest.
Commonwealth Games: can Africa afford the games?
Authors: Gumede Musa , Mazibuko Vusi , Msweli Pumela
Published: May 2017

The Commonwealth Games Federation recently awarded the hosting of the 2022 Games to Durban, South Africa. This will be the first time the Games are hosted in the African continent. The paper looks into whether tangible benefits for hosting mega-events are less or more important than intangible benefits. In investigating this issue, the paper takes a political geography theoretical stance for its ability to provide normative ideological content for explaining intangible and tangible values for hosting Commonwealth Games. The paper looks at pros and cons for investing in mega-event infrastructure and also looks at the cost of hosting the Games for cities. The 2010 Commonwealth Games in Delhi budgeted $240 million for the entire Games, but the actual costs after the Games were found to be $1.7 billion. Similarly, in 2014 Glasgow, the cost of the Games was calculated at £575 million ($690 million). The paper looks at whether South Africa as the 2022 Commonwealth Games host can afford the games. It also considers the impact of the Games on national identity, national pride and patriotism here identified as novelty values that preserve social cohesion, a social attribute that has to be in place to build a robust economy. The paper concludes by noting that the success of the Games will depend on deliberate investment in catalytic facilities in areas that will be sustained post event. The amount of novelty value generated out of the Commonwealth Games will depend on how successful the Games are and on how the communities are able to interact with the facilities post event.
The PCSK9 revolution and the potential of PCSK9-based therapies to reduce LDL-cholesterol
Authors: Seidah Nabil G
Published: May 2017

[first paragraph of article]A large number of clinical trials over the last 30 years have firmly consolidated the importance of lowering low density lipoprotein cholesterol (LDLc) in the prevention of cardiovascular diseases (CVD) and its associated devastating sequelae. While healthy diets and exercise are highly recommended to lower LDLc levels, in many individuals with high baseline levels of LDLc, this is not sufficient to bring levels down to recommended target values in order to prevent recurrent coronary heart disease and cardiovascular complications. This is especially true for patients at high risk of premature cardiovascular death and disability, including those with familial hypercholesterolaemia (FH). FH is a very common inherited disease – affecting at least 30 million people worldwide, with an overall incidence of 1:200 globally – of whom ≤ 1% have been diagnosed. The advent of HMG-CoA reductase inhibitors, also known as ‘‘statins’’, and their first application to hypercholesterolemic patients over 30 years ago, has revolutionized the treatment of FH patients and resulted in substantial lowering of LDLc. In addition, cholesterol– lowering drugs, such as ‘‘ezetimibe’’ that blocks cholesterol absorption from the gut by inhibiting the Niemann-Pick C1-like 1 (NPC1L1) transporter, have also been successful and a 7-year IMPROVE-IT trial revealed that a ‘‘simvastatin-ezetimibe’’ combination resulted in an incremental lowering of LDLc levels and a modest 2% improved cardiovascular outcomes.3 Therefore, it became clear that additional treatments are needed to substantially decrease LDLc and efficiently protect against CVD.
Towards developing a vaccine for rheumatic heart disease
Authors: Gandhi Geethanjali Devadoss , Krishnamoorthy Navaneethakrishnan , Motal Ussama M. Abdel , Yacoub Magdi
Published: May 2017

Rheumatic heart disease (RHD) is the most serious manifestations of rheumatic fever, which is caused by group A Streptococcus (GAS or Streptococcus pyogenes) infection. RHD is an auto immune sequelae of GAS pharyngitis, rather than the direct bacterial infection of the heart, which leads to chronic heart valve damage. Although antibiotics like penicillin are effective against GAS infection, improper medical care such as poor patient compliance, overcrowding, poverty, and repeated exposure to GAS, leads to acute rheumatic fever and RHD. Thus, efforts have been put forth towards developing a vaccine. However, a potential global vaccine is yet to be identified due to the widespread diversity of S. pyogenes strains and cross reactivity of streptococcal proteins with host tissues. In this review, we discuss the available vaccine targets of S. pyogenes and the significance of in silico approaches in designing a vaccine for RHD.
Hydatid cyst of the interventricular septum
Authors: Tefera Endale , Knapp Joseph , Teodori Michael
Published: May 2017

While cardiac involvement is not a common presentation in human echinococcosis, it may lead to life-threatening complications including cyst rupture; anaphylactic shock; tamponade; pulmonary, cerebral or peripheral arterial embolism; acute coronary syndrome; dysrhythmias; infection; ventricular or valvular dysfunction, as well as sudden death. Here we report a 9-year old girl who was diagnosed to have hydatid cyst of the interventricular septum four years after diagnosis and medical treatment of pulmonary hydatidosis. Presentation, management and follow-up of the patient is discussed.
The vibration frequency analysis of the screw feeding system with spring supports
Authors: Zhang Huiduan , Zhou Hongliang
Published: May 2017

Ball screw feeding system has wide application in machine tools, and its dynamic research is very important. The drive screw can be seen as a rotating Timoshenko beam under the pre-tension force. Considering the bearing stiffness, the boundary condition of the screw is spring supported. Also, considering the contact deformation between the screw and the worktable and the worktable moving, the screw is added an intermediate moving spring-mass system. Using boundary conditions and continuity conditions, the lateral and longitudinal frequency equations of the screw feeding system are derived considering the effect of gyroscope, the pre-tension force, the bearing stiffness, the contact between the worktable and the screw and the moving of the worktable. The effect of the system parameters on the natural frequency is studied. The diameter, the pre-tension force, the bearing stiffness, the contact stiffness and the rotational speed of the screw have effect on the vibration frequency and the frequency varies when the worktable moves along the screw from the left to the right end. This work supplies a base for designing the drive system to avoid resonance and to improve the stability of the system.
Two-dimensional nonlinear parametric sloshing in the irregular tanks: numerical analysis and experimental investigation
Authors: Wang Li-Shi , Wang Zhuang , Li Yu-Chun
Published: May 2017

The finite volume and volume of fluid (VOF) methods are used to simulate the two-dimensional nonlinear parametric sloshes in the U-shaped and the circular tanks. An experiment is simultaneously conducted to observe and measure the responses of two-dimensional nonlinear parametric sloshes. The natural frequencies and the nonlinear steady-state amplitude-frequency responses are respectively acquired and compared by numerical and experimental methods. The numerical results have a good agreement with the experimental values. Because the viscous damping is automatically considered in the numerical simulations, the steady-state wave amplitudes of parametric resonance (sloshing) are well predicted. The finite volume and VOF techniques aided by Fluent Code can be a practical tool for the engineers to analyze the long-time nonlinear parametric sloshing in arbitrary-shape tanks.
Vibration actuator capable of movement on magnetic substance based on new motion principle
Authors: Yaguchi Hiroyuki , Sakuma Shun
Published: May 2017

In every country, the construction of large steel bridges, such as cable-stayed bridges, is carried out actively, and the number of bridges has been progressively increasing. In the case of large steel bridges, inspections must be carried out every five years. Because frequent inspections of such bridges are required, working robots capable of performing inspections in difficult environments would be very useful. This paper proposes a vibration actuator with a very simple structure capable of movement on a magnetic substance via the inertial force of a mass–spring model. Through theoretical analysis using the energy method, it was determined that the vibration actuator is propelled by the difference between the frictional forces acting during the forward and backward motions of the actuator. The experimental and analytical results were compared, verifying the validity of the novel motion principle. Additionally, based on the asymmetric magnetic field that arises when a copper wire is asymmetrically wound around the iron core of an electromagnet, a method of increasing the magnetic field strength at one pole of the electromagnet is newly proposed. By attaching an iron plate to the iron core of the electromagnet, the effects of the resulting asymmetric magnetic field of the electromagnet on the actuator motion were examined. The experimental results indicate that the actuator is able to climb upward while pulling a load mass of 110 g. The maximum efficiency of the actuator was 20.5 % for an actuator pulling its own weight. The efficiency of the actuator with the attached iron plate was considerably greater than that without the iron plate.
Effect of misaligned bearing support performance on natural frequencies of marine propulsion shafting
Authors: Zhang Xinbao , Gu Xingchen
Published: May 2017

The influences of bearing support performance which would be affected by the quality of shafting alignment apparently on the lateral vibration natural frequencies of marine propulsion shafting are analyzed in this paper. A three dimensional finite element model representing the entire propulsion shafting, including the bearings, shaft and propeller, has been developed using finite element software for lateral vibration analyses. The effects of the number of bearings, the stiffness and effective contact length of the bearings on the natural frequencies of the shaft are studied respectively. The simulation analysis show that the bearing of a certain position often only has a significant impact on the frequencies of a certain order or a few orders, and the natural frequencies of the shaft can be transferred to avoid the resonance speeds through the reasonable arrangement and performance design of the shaft bearings. In addition, the curve alignment technology is also presented to improve the current shafting alignment quality and misalignment angle error, so as to ensure the design performance of radial bearings. Experimental results show that the curve alignment technology is an effective method to reduce the uneven load and eccentric wear of the bearings, which are beneficial to avoid the resonance vibration and improve the life and stability of shaft system.
Vibration response analysis of wind towers considering coupling effects of wind and tide level
Authors: Tao Tiejun , Huang Shuai , Liu Liansheng
Published: May 2017

Wind power towers located in the intertidal zone are not only influenced by wind load but also affected by the rising and falling of the tides. Little research examining the dynamic characteristics of wind power towers under multi-factor coupling loads has been conducted. Based on the finite element method and field testing, dynamic characteristics of the wind towers under complex loads were studied. Change laws of natural frequencies of wind power towers under different water levels were analyzed, and change laws of acceleration, displacement, strain and failure characteristics of a wind power tower under the coupling load of wind and tide levels were analyzed. The wind tower blade in expansion and deformation characteristics of two types of feathering were analyzed. The results showed that the influence of water levels on the low order natural frequency of a wind power tower structure was slight, but the influence on the high order frequency was higher. The maximum displacement of a wind power tower structure under a fluctuating wind load increased with increasing height. In extreme cases, a wind power tower will appear to have buckling instability destruction when the blades are in a state of suitable slurry. The top displacement of a wind power tower was less than a state displacement. Field monitoring results validate the correctness of the numerical simulation analysis.
Performance-based plastic design method of high-rise steel frames
Authors: Zhang Qian , Xiong Ergang , Liang Xingwen , Miao Xiaoyu
Published: May 2017

Under major earthquakes, high-rise steel moment frames designed according to the current codes will experience an inelastic deformation, which is difficult to predict and control. According to the principle of work-energy balance, a performance-based plastic design (PBPD) methodology is put forward for the design of high-rise steel frames in this study. In this method, the target drift and yield mechanisms are pre-selected as key performance criteria. The design base shear in a given earthquake level is calculated based on the work-energy balance principle that the work required to push the structure monotonically to the target drift is equal to the energy needed by an equivalent single degree of freedom to reach the same state. The plastic design is utilized to design the frame components and connections so as to attain the desired yield mechanism and behavior. The method has been adopted to design a ten-story steel moment resisting frame, and has been validated by nonlinear dynamic time history analyses and pushover analysis. The results indicate that the frames develop targeted strong column sway mechanisms, and the story drifts are less than the target values, thus satisfying the anticipated performance objectives. The addressed method herein can form a basis for the performance-based plastic design of high-rise steel moment resisting frames.
Research on unsteady performance of a two-stage self-priming centrifugal pump
Authors: Kai Wang , Zixu Zhang , Linglin Jiang , Houlin Liu , Yu Li
Published: May 2017

In order to study the unsteady performance of a two-stage self-priming centrifugal pump, the unsteady numerical calculation in a two-stage self-priming centrifugal pump was performed and energy characteristics experiments and self-priming experiments were carried out. The pressure pulsation and radial force in the pump were then analyzed. The results show that numerical calculation values are close to the experiment values. Head deviation of the pump is less than 3 %, and efficiency deviation of the pump is less than 2 percentage points. Compared with monitoring point P1, the pressure fluctuation coefficient of monitoring point P3 at the design flow rate is reduced by 61 %. Compared with monitoring point P8, the pressure fluctuation coefficient of monitoring point P5 is reduced by 70 %. The radial force on the radial guide-vane is obviously smaller than that on the volute. Under the same flow rate, radial force on the volute of second-stage pump is almost 20 times larger than that on the radial guide-van of first-stage pump.
Fault diagnosis for the gearbox of wind turbine combining ensemble intrinsic time-scale decomposition with Wigner bi-spectrum entropy
Authors: Hu Aijun , Xiang Ling , Gao Nan
Published: May 2017

The complex dynamic working conditions of wind turbine make it a challenge to identify work status and fault type of wind turbine gearbox. In this paper, a novel method is presented to decompose non-stationary vibration signal and identify wind turbine faults applying ensemble intrinsic time-scale decomposition (EITD) with Wigner bi-spectrum entropy (WBE). Ensemble intrinsic time-scale decomposition (EITD) is able to restrict the end effect and to prevent the signal distortion. Wigner bi-spectrum entropy (WBE) has perfect energy aggregation and can extract the signal feature effectively. The advantage of method is that it does extract the fault features and recognize the gearbox fault types when two or more fault features are close to each other. This proposed approach based on EITD and WBE is applied in the fault diagnosis of wind turbine gearbox.
Analysis and optimization of drum washing machine vibration isolation system based on rigid-flexible virtual prototype model
Authors: Xiao Linjing , Zhang Sen
Published: May 2017

In order to improve the calculation accuracy of vibration response in drum washing machine isolation system, a new CAE method is proposed for dynamics analysis and parameter optimization according to the rigid-flexible coupling technology of virtual prototype. With the vector loop algorithm, the motion differential equation of the vibration isolation system is solved based on Lagrange method, and the key parameters that affect the vibration response are acquired. In terms of simulation research, the modal neutral file (MNF) of the shell body is established by the software ANSYS for modal analysis, and it is exported into software platform ADAMS/Vibration to establish the rigid-flexible coupling model. Through the coupling model, the kinetic characteristics are calculated in continuous excitation frequency domain (0-20 Hz). The experimental verification is accomplished by LMS Test.Lab device, of which results shows that the rigid-flexible coupling simulation method is definitely accurate and feasible. Meanwhile, 15 “hot spots” of the shell body are obtained from the ADAMS/Durability module, which can provide an important basis for structure design. Then, the spring stiffness and damping coefficient is synthetically optimized by sensitivity analysis method with 9 time’s iterative calculation, which has a great significance for product development.
Model shape correction method for high-frequency force balance technique
Authors: Zhao Ruohong , Xu An , Sun Weixing , Lan Xiaohua
Published: May 2017

This study proposed the mode shape correction formulae for the high frequency force balance technique. The presented formulae respectively give the mode shape for translational modes and torsional modes, meaning that there is no need to distinguish the traditionally concerned along wind case and cross-wind case anymore. This treatment makes the mode shape correction much simpler especially when wind blows to a building obliquely. Comparison with some experimental results of other researchers shows the reliability of the proposed formulae. The mode coupling effect is also analyzed and discussed through an actual super-tall building, the Guangzhou East Tower. The results show that the mode shape coupling effect is significant and cannot be ignored.
Pokémon Go, Realidade Aumentada e Georeferenciamento: A gamificação nas suas possibilidades para o Turismo
Authors: De Carli Iraci Cristina da Silveira , Gastal Susana de Araújo , Gomes Micael Nozari
Published: May 2017

Sucesso no cinema, o Pokémon toma outras proporções no jogo, ao fazer do jogador um partícipe e personagem principal. O Pokémon Go tem como objetivo capturar criaturas virtuais em locais da realidade concreta, espalhadas em pontos estratégicos das cidades. Este artigo propõe uma análise do Pokémon Go, destacando os princípios da Realidade Aumentada, Georeferenciamento, Jogos e Gamificação, assim como possíveis diálogos com o turismo. Trata-se de uma pesquisa de viés qualitativo e exploratório, baseada em revisão bibliográfica considerando os termos Realidade Aumentada, Georreferenciamento, Jogos e Gamificação. Os resultados parecem indicar, ao buscar-se resgatar outros jogos, agora direcionados ao turismo, uma presença ainda tímida, em que pese a importância e possibilidades dos Jogos Digitais e da Realidade Aumentada para divulgação de produtos e na ampliação e qualificação da experiência turística.
Lawad, Ye’ Yo’ and Tum Yap : The manifestation of forest in the lives of the Bateks in Taman Negara National Park
Authors: Kamarul Zahari Nurul Fatanah , Omar Mustaffa , Daim Salleh
Published: May 2017

This paper attempts to explore the manifestations of the forest in the lives of the Bateks who reside within the vast region of the Taman Negara National Park in Pahang, Peninsular Malaysia. Such manifestations emerged from the mutual relationship between the Bateks and their surroundings of the forest. In the Bateks belief system, there exist the concept of Lawad, Ye’ Yo’ and Tum Yap; all of which represent the Bateks’ unique way of giving value to the forest. Lawad, Ye’ Yo’ and Tum Yap are the manifestations of how the Bateks navigate themselves in the forest. The Bateks see that the forest represents a dynamic dimension which has to be calmed through good spirits and behavior because the physical environment is a medium for the spiritual world to express its feelings, thinking, decisions, and punishments. This belief is to them the best way in endearing themselves to the environment. To the Bateks, all concerns for the forest could be settled through this belief.
Patterns of Interactions in a Synchronous Computer Mediated Communication (CMC) Collaborative Activity in the Saudi EFL Context
Authors: Al-Mutairy Muna , Shukri Nadia
Published: May 2017

This study explored patterns of interaction in a synchronous Computer Mediated Communication (CMC) collaborative activity in an English as a Foreign Language (EFL) setting in the Saudi Arabian context. The study focused on the use of synchronous Chat in teaching and learning. Collaborative learning is considered to lead to a deeper level of learning, enhanced critical thinking, shared understanding and long-term recognition of the learned material. A qualitative approach was used in the data collection process. Participants were 20 high school students, native speakers of Arabic, in Jeddah, Saudi Arabia. The study examined participants’ English usage in conversation, a quiz, and a discussion, all of which took place online, in a CMC format. There was also a paired work presentation of 25 minutes’ duration. Results revealed that CMC enabled learners to further their understanding of instructional content and to better apply what they had learned when they were placed in a group. The results from the online discussion showed that participants’ linguistic performance improved, including better utilization of words. Although grammatical usages lack certain accuracy, the use of CMC to a larger extent contributed to enhanced communication skills and autonomy. Based on the findings some suggestions and recommendations were provided as to aid teachers as well as students in implementing the Internet technology in EFL classrooms.
Una aproximación a la idea de "Constitución económica" y sus alcances en la Constitución chilena
Authors: Viera Álvarez Christian , Bassa Mercado Jaime , Ferrada Bórquez Juan Carlos
Published: May 2017

La Constitución es una norma con techo ideológico abierto que se funda en acuerdos entre diferentes cosmovisiones. Por lo mismo, será un espacio cuyo elemento esencial es definir entre todos el “mínimum constitucional” de reglas y principios que determinan las bases del sistema constitucional. En tal contexto, en este trabajo se analizan los alcances que tendría la idea de “Constitución económica”, como marco de opciones legislativas en esta materia, especialmente en el ámbito de la Constitución chilena vigente. A estos efectos, se propone un giro hermenéutico en la tradicional construcción que realizan la doctrina y la jurisprudencia en esta materia, partiendo del supuesto de que el concepto es contingente y se desarrolla bajo un lenguaje equívoco. La apertura de los conceptos constitucionales unida a una lectura dinámica de la sociedad y la Constitución permiten que la interpretación pueda ir adaptándose a las cambiantes circunstancias sociales, políticas o económicas.
Derechos humanos y garantías constitucionales
Authors: Ovalle Favela José
Published: May 2017

Se analiza la reforma de 2011 al artículo 1o. de la Constitución Política, en la que se hace la distinción entre los derechos humanos y las garantías para su protección; se señala que los derechos humanos tienen una doble fuente: la propia Constitución y los tratados internacionales de los que el Estado mexicano sea parte, y se establecen como principios para la interpretación de las normas sobre derechos humanos, los de pro persona, universalidad, interdependencia, indivisibilidad y progresividad. Previamente, el autor examina la regulación de los derechos humanos y las garantías individuales en las Constituciones mexicanas de los siglos XIX y XX. El artículo concluye con el estudio de los cambios fundamentales que la reforma de 2011 ha producido en la jurisprudencia sobre el sistema de control de la constitucionalidad de las normas jurídicas generales, así como sobre la adopción del control de la convencionalidad de las leyes y actos dentro de los tribunales mexicanos.
Medidas cautelares y nuevas funciones del juez en la formulación de políticas públicas
Authors: Thury Cornejo Valentín
Published: May 2017

Las transformaciones sociales, culturales y políticas han puesto en discusión la legitimidad del actuar estatal, y ello repercute en instituciones tradicionales del derecho administrativo, como la presunción de legitimidad y la ejecutoriedad del acto administrativo. Crecientemente, los ciudadanos y las organizaciones de la sociedad civil concurren ante los jueces en resguardo de los derechos humanos que las Constituciones y normas les reconocen. Los jueces, llamados a mediar entre un interés general configurado en instancia administrativa y unos derechos individuales reconocidos en las Constituciones que ellos deben interpretar, intervienen en la esfera administrativa, y lo hacen, en un primer momento, a través de medidas cautelares que frenan ese proceso administrativo. En este artículo explicamos la actual importancia de las medidas cautelares como el producto de dos fenómenos estructurales que confluyen: la judicialización y la emergencia. Ambos procesos se encuentran mutuamente imbricados, y es a través de los procesos cautelares como los jueces cambian sustancialmente su participación en el proceso de toma de decisiones públicas, dejando de ser un control ex post para pasar a ser parte de la misma secuencia decisoria de la política pública.
Daftar Isi Jurnal Inovasi Pembelajaran Vol.1, No.1 Mei 2015
Authors: Jinop Daftar Isi
Published: May 2017

Daftar Isi Jurnal Inovasi Pembelajaran Vol.1, No.1 Mei 2015
Cover Belakang Jurnal Inovasi Pembelajaran, Vol.1, No.1 Mei 2015
Authors: Belakang Jurnal Inovasi Pembelajaran Cover
Published: May 2017

Cover Belakang JINoP
Desain Pembelajaran Luas Segi Banyak Menggunakan Tangram Berpetak di Kelas IV
Authors: Puspasari Lia , Zulkardi Zulkardi , Somakim Somakim
Published: May 2017

AbstractThis research is used for (1) knowing the understanding of fourth grade students of elementary school in finding polygon area concept through square-grid Tangram; (2) resulting the learning trajectory for the student in learning polygon area through square-grid Tangram by having approaching PMRI to the fourth grade students. This research involved 26 students of fourth grade at Az-Zahrah Palembang. It used design research methodology of learning polygon area through square-grid Tangram included preparing for experiment steps, teaching experiment, and retrsospective analysis. It’s resulted Learning Trajectory which is connected to the three learning process activities, hence: (1) determine kinds of plane figure and plane partitioned (using any kinds of employment context); (2) determine the area ofsquare unit (using square-grid Tangram); (3) founding algorithm of polygon area. The result shown by using PMRI approach, square-grid Tangram is useful as a model to support the students in finding polygon concepts. Keywords: Polygon area, Square-grid Tangram, design research, PMRI AbstrakPenelitian ini bertujuan (1) untuk mengetahui pemahaman siswa kelas IV Sekolah Dasar dalam menemukan konsep luas segi banyak menggunakan Tangram berpetak; (2) menghasilkan lintasan belajar bagi siswa melalui Tangram berpetak dalam pembelajaran luas segi banyak menggunakan pendekatan PMRI di kelas IV. Penelitian dilaksanakan di SD Islam Az-Zahrah Palembang yang melibatkan 26 orang siswa kelas IV. Metode yang digunakan adalah design research pembelajaran luas segi banyak menggunakan Tangram berpetak melalui tahap-tahap preparing for the experiment, teaching experiment, dan retrospective analysis. Penelitian ini menghasilkan Learning Trajectory yang memuat serangkaian proses pembelajaran dalam 3 aktivitas yaitu: (1) menentukan jenis bangun datar dan mempartisi bangun (menggunakan konteks berbagai pekerjaan); (2) menentukan luas dengan persegi satuan (menggunakan Tangram berpetak); (3) menemukan algoritma luas segi banyak. Hasil dari percobaan pembelajaran menunjukkan bahwa dengan pendekatan PMRI, Tangram berpetak berperan sebagai model yang mendorong siswa menemukan konsep luas segi banyak. Kata Kunci: Luas segi banyak, Tangram berpetak, design research, PMRI
Pengaruh Pemakaian Media Papan TKP (Tempat Kejadian Perkara) Terhadap Kemampuan Bercerita
Authors: Rachmanita Elfy
Published: May 2017

ABSTRAK: Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan media papan TKP (Tempat Kejadian Perkara) terhadap kejelasan vokal dan intonasi, kelancaran berbicara, dan keruntutan alur cerita siswa saat bercerita. Penelitian ini menggunakan pendekatan penelitian kuantitatif dengan desain penelitian eksperimen semu. Hasil penelitiannya sebagai berikut. Pertama, ada pengaruh penggunaan media papan TKP (Tempat Kejadian Perkara) terhadap kejelasan vokal dan intonasi siswa saat bercerita. Kedua, ada pengaruh penggunaan media papan TKP (Tempat Kejadian Perkara) terhadap kelancaran berbicara siswa saat bercerita. Ketiga, ada pengaruh penggunaan media papan TKP (Tempat Kejadian Perkara) terhadap keruntutan alur cerita siswa saat bercerita.Kata Kunci: media papan TKP (Tempat Kejadian Perkara), kemampuan bercerita, pembelajaran berceritaABSTRACT: The purpose of this research is to know the influence of flannel board media on storytelling capability. Research method is quntitative descriptive. Breakdown of research results as follows. First, description of influence flannel board to vocal and intonation. Second, description of flannel board media to speaking capability. Third, description of influence flannel board media to crhonologycal storytelling. Keywords: flanel board, tellingstory capability, tellingstory learning
Peningkatan Kemampuan Menulis Teks Prosedur Kompleks Melalui Model Pembelajaran STAD (Student Team Achievement Division) Pada Kelas X-IPA 3 SMAN Candipuro Lumajang
Authors: Winarsih Anis Dwi
Published: May 2017

ABSTRAKPenelitian ini bertujuan untuk mengetahui hasil  belajar  siswa pada mata pelajaran  bahasa Indoneisa Teks Prosedur Kompleks dengan menggunakan model pembelajaran STAD (Student Team Achievement Division). Penelitian ini dilaksanakan di SMAN Candipuro Lumajang dengan  menggunakan pendekatan kuantitatif. Data penelitian ini berupa observasi aktivitas guru,  aktivitas siswa dan kemampuan mengerjakan soal dalam bahasa Indonesia tentang Teks Prosedur Kompleks. Data Penelitian bersumber pada peserta didik kelas X-IPA 3 dan observer yang melaksanakan penelitian di sekolah tersebut. Hasil penelitian menunjukkan bahwa model pembelajaran STAD (Student Team Achievement Division) terlaksana dengan baik sesuai dengan sintak pembelajaran yang  direncanakan. Kemampuan setiap siswa dalam belajar dan mengajarkan materi/pokok bahasan kepada temannya yang lain dalam kelompok dapat berlangsung dengan baik, sehingga temannya mampu untuk memahami dan memecahkan masalah bahasa Indonesia Teks Prosedur Kompleks dengan baik. Hal ini ditunjukkan dengan peningkatan prosentase belajar siswa dalam menulis teks prosedur kompleks dari 30% menjadi 83,3%. Kata Kunci: Kemampuan menulis, teks prosedur kompleks, model pembelajaran STAD
Peningkatan Hasil Belajar pada Mata Pelajaran Listening Materi Part of Speech Text Narative melalui Audio Lingual Method Siswa SMA Muhammadiyah I Malang
Authors: Lestari Yuni
Published: May 2017

Kondisi kemampuan menulis puisi siswa kelas XI IPS SMA Muhammadiyah I Malang yang masih rendah. Hasil observasi menunjukkan bahwa tingkat pemahaman siswa terhadap materi part of speech pada text narative pelajaran listening masih rendah. Permasalahanya adalah bagaimanakah pelaksanaan pembelajaran dengan menerapkan audio lingual method untuk meningkatkan kemampuan mengerjakan soal part of speech pada soal narative pelajaran listening siswa pada tahap pramengerjakan, mengerjakan, dan pascamengerjakan. Penelitian ini bertujuan untuk meningkatan kemampuan hasil belajar siswa SMA Muhammadiyah I Malang pada mata pelajaran listening materi part of speech pada text narative melalui audio lingual method  dengan menggunakan audio lingual method.Penelitian ini dilaksanakan dengan menggunakan pendekatan kualitatif. Rancangan yang diterapkan adalah tindakan kelas. Penelitian ini dilakukan di kelas SMA Muhammadiyah I Malang, sedangkan subyek penelitian ini adalah siswa kelas XI  SMA Muhammadiyah I Malang sebanyak 23 siswa.  Data penelitian ini berupa perilaku siswa serta skor siswa dalam proses pembelajaran mengerjakan materi part of speech pada text narative pelajaran listening dengan menerapkan audio lingual method. Data yang terkumpul dianalisis dengan metode kualitatif untuk mengetahui hasil peningkatan belajar siswa SMA Muhammadiyah I Malang pada mata pelajaran listening materi part of speech pada text narative melalui audio lingual method.Pembelajaran dengan menggunakan audio lingual method dapat meningkatkan belajar siswa SMA Muhammadiyah I Malang pada mata pelajaran listening materi part of speech pada text narative melalui audio lingual method , hal itu dapat dilihat dalam keberhasilan siswa siswa secara individu. Pada siklus I dengan kualifikasi cukup,  siklus II kemampuan siswa dalam mengerjakan materi part of speech pada text narative pelajaran listening dengan kualifikasi baik.  Kata kunci: Listening materi part of speech, text narative, audio lingual method, Tindakan Kelas.
Pengembangan Model Pembelajaran Komprehensif dalam Pendidikan Ilmu Pengetahuan Sosial di Sekolah Dasar
Authors: Supriatna Usep Supriatna
Published: May 2017

Abstrak: Pembelajaran secara komprehensif merupakan langkah implementasi dari rencana pembelajaran terpadu secara menyeluruh, berisi rincian dari prosedur pembelajaran. Sama dengan pada prosedur ada empat langkah utama yang merupakan sintaks dari model pembelajaran komprehensif dan terpadu hasil pengembangan, yaitu langkah: orientasi, eksplorasi, pendalaman dan penyimpulan. Langkah Orientasi atau kegiatan awal pembelajaran merupakan langkah untuk mendorong kelas memusatkan perhatian terhadap pembelajaran; Langkah Eksplorasi atau kegiatan inti pertama, merupakan langkah untuk mengajak dan mendorong siswa untuk mencari dan menemukan fakta, pengetahuan, masalah dan pemecahan; Langkah Pemantapan atau kegiatan inti kedua, merupakan langkah untuk memperdalam, memperluas, memantapkan, memperkuat penguasaan materi dan kemampuan yang telah dicapai pada langkah eksplorasi; dan Langkah Penyimpulan atau kegiatan akhir pembelajaran, merupakan langkah untuk menyimpulkan atau merangkumkan dan menegaskan tentang apa yang telah dipelajari.Kata Kunci: Metode, Pendekatan, Pembelajaran komprehensif, terpadu, keterampilan sosial, Student Teams-Achievement Divisions, Teams-Games Tournament (TGT), Jigsaw.
MENINGKATKAN KETERAMPILAN PROSES SISWA KELAS X.5 SMAN 4 BARABAI MELALUI PENERAPAN MODEL INKUIRI TERBIMBING PADA KONSEP EKOSISTEM
Authors: SMAN 4 Barabai Norhasanah
Published: May 2017

AbstrakPembelajaran biologi di SMAN 4 Barabai masih menekankan konsep-konsep yang terdapat di dalam buku dan kurang dikaitkan dengan lingkungan belajar siswa terutama pada konsep yang berhubungan dengan lingkungan. Model inkuiri terbimbing untuk membangun keterampilan proses siswa belum intensif digunakan, oleh karena itu dilakukan penelitian tindakan kelas untuk meningkatkan keterampilan proses siswa. Subjek penelitian siswa  kelas X.5 SMAN 4 Barabai berjumlah 32 orang siswa. Penelitian dilaksanakan dua siklus, setiap siklus dilakukan dua kali pertemuan. Data hasil penelitian diperoleh dari hasil observasi terhadap keterampilan proses siswa. Data diolah dengan dijumlahkan untuk mendapatkan rata-rata keterampilan siswa. Hasil penelitian menunjukkan skor rata-rata keterampilan proses siswa kelas X.5 SMAN 4 mengalami peningkatan. Siklus I diperoleh skor rata-rata 2,11 dengan kategori cukup baik, sedangkan pada siklus II diperoleh skor rata-rata 3,05 dengan kategori baik. Keterampialan proses merumuskan masalah atau pertanyaan, merumuskan hipotesis atau jawaban sementara, merumuskan prosedur kerja dalam melakukan pengamatan dan melakukan penyelidikan melalui pengamatan adalah rata-rata baik. Sedangkan menganalisis hasil pengamatan dan membuat kesimpulan berdasarkan hasil pengamatan adalah rata-rata cukup baik.   Kata kunci: keterampilan proses, model inkuiri terbimbing, konsep ekosistem
PENGEMBANGAN PERANGKAT PEMBELAJARAN IPA TOPIK ENERGI DALAM SISTEM KEHIDUPAN DI MADRASAH TSANAWIYAH
Authors: Hidayati Nurul
Published: May 2017

AbstrakPenelitian pengembangan ini bertujuan untuk mengembangkan perangkat pembelajaran topik energi dalam sistem kehidupan model inkuiri terbimbing di MTs yang valid, praktis dan efektif.  Jenis penelitian ini adalah penelitian pengembangan yang menggunakan model Tessmer. Model Tessmer dilakukan dengan  tahapan yaitu tahapan self evaluation, expert reviews, one-one, small group, dan field test. Subjek uji penelitian  adalah subjek uji coba pakar yang berasal dari tim dosen yang sekurang-kurangnya mempunyai kualifikasi magister pendidikan. Subjek uji coba perorangan dilakukan dengan 6 siswa yang mempunyai kemampuan akademik yang berbeda, subjek uji coba kelompok kecil dilakukan pada siswa kelas VIIB dengan jumlah siswa 18 orang, subjek uji coba lapangan dilakukan pada siswa kelas VIIA yang berjumlah 40 orang. Seluruh data diperoleh dari instrumen pengumpulan data dan dianalisis secara deskriptif. Hasil penelitian menunjukkan perangkat pembelajaran tergolong valid, praktis dan efektif. Dikatakan valid berdasarkan hasil validasi menunjukkan silabus, RPP, bahan ajar, LKS, media pembelajaran, dan instrumen penilaian termasuk kriteria sangat valid. Praktis karena hasil perorangan menunjukkan siswa mampu memahami bahan ajar dan LKS yang diberikan. Dikatakan efektif karena (1) hasil belajar kognitif produk dan kognitif proses telah tuntas, (2) kinerja siswa rata-rata kategori sangat  baik, (3) perilaku berkarakter siswa (disiplin dan tanggung jawab) kategori sangat baik, (4) keterampilan sosial siswa (bekerja sama dan menyumbang ide)  kategori sangat baik, (5) keterampilan berpikir kritis siswa pada saat melakukan kegiatan percobaan kategori sangat baik.Kata kunci:    penelitian pengembangan, high quality intervention, model Tessmer.