Blended Learning-Effectiveness and Application in Teaching and Learning Foreign Languages

Author: Joel Laffita Rivera

The present research paper is designed to investigate the importance of the application of Blended Learning (BL) in education as a method for teaching and learning Foreign Languages Subjects (FLs) at university level. The study has used the mixed-method approach for the collection of data and its analysis. The study discloses: The research-design; Foreign Language-framework; Teaching and learning-roleplay-reflection and Methodology-schemes. Although the employment of BL is very important in teaching and learning practices; the paper-results concluded that there is a need to provide methodologies and computer training sessions to the FL teachers for effective employment of BL in foreign languages classes. Consequently to this the study aimed to deliver an applicable script through which Spanish language teachers and foreign language teachers obtain pedagogical-and computer knowledge-inputs to setup foreign languages classes through Blended Learning.


Journal: Open Journal of Modern Linguistics
DOI: 10.4236/ojml.2019.92013(PDF)
Paper Id: 92212 (metadata)

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Smart Agriculture with an Automated IoT-Based Greenhouse System for Local Communities

Authors: Nianpu Li, Yimeng Xiao, Lei Shen, Zhuoyue Xu, Botao Li, Chongxuan Yin

Nowadays, smart agriculture using wireless communication is replacing the wired system which was difficult to install and manage. Then, this paper introduces a new design for IoT application on the greenhouse, which utilizes different technologies to present a new model for practical implementation in the IoT concept. This design can settle a new method to solve problems in Market Demand, Precision in Operation and supervision. Furthermore, this design can be used in many cases and assist farmers, cropper and planted people to develop their business.


Journal: Advances in Internet of Things
DOI: 10.4236/ait.2019.92002

Paper Id: 92183 (metadata)

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Coronary Flow Reserve Assessment of Orbital Atherectomy: An Observational Pilot Study

Authors: Nabil Dib, Brad J. Martinsen, Bynthia M. Anose, John McB. Hodgson,
Robert Kohler, Georges Nseir, Nathalie R. Antonios, Richard Shlofmitz,
Jeffrey W. Chambers

The aim of this prospective observational pilot study was to observe the impact of orbital atherectomy (OA) on the coronary microcirculation via coronary flow reserve (CFR) measurements. Fifteen subjects who had successful OA and stent placement with no procedural complication were enrolled at 3 hospitals in the U.S. Baseline and hyperemic velocities were 16 ± 5.2 and 36 ± 14 cm/sec, respectively. The average CFR post-procedure was within the normal range at 2.23 ± 0.33. The observation of normal CFR following OA may be attributed to the orbital action of the device that allows for continuous flow during treatment, minimizing a bolus embolization effect which can impact microvascular function.


Journal: Journal of Biomedical Science and Engineering
DOI: 10.4236/jbise.2019.124019

Paper Id: 92106 (metadata)

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The Effect of the Moufarrege Total Posterior Pedicle Reduction Mammaplasty on the Erogenous Sensation of the Nipple

Authors: Richard Moufarrege, Mohammed El Mehdi El Yamani, Laura Barriault,
Ahmed Amine Alaoui

Traditional reduction mammoplasties have the simple concern to guarantee the survival of the nipple areola complex after surgery. Little has been done to take care of essential functions in the nipple, especially the erogenous sensation. We have conducted a retrospective study on a cohort of 573 female patients operated using the Total Posterior Pedicle of Moufarrege between 1985 and 1995 to evaluate its effect on the erogenous sensation of the nipple. This study demonstrated the preservation of the erogenous sensation of the nipple in a high proportion of these patients. The physiology of this preservation is explained in regard of the technique details in Moufarrege mammoplasty compared to other techniques. The Moufarrege Total Posterior Pedicle would therefore be a highly reliable reduction technique to ensure the preservation of the erogenous sensation of the nipple.


Journal: Surgical Science
DOI: 10.4236/ss.2019.104016(PDF)
Paper Id: 92042


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Fourier-Series Representation of Discontinuous Functions and Its Physical Applications

Authors: Sami M. Al-Jaber, Iyad Saadeddin

In this work, Fourier-series representation of a discontinuous function is used to highlight and clarify the controversial problem of finding the value of the function at a point of discontinuity. Several physical situations are presented to examine the consequences of this kind of representation and its impact on some widely well-known problems whose results are not clearly understood or justified.


Journal: Applied Mathematics
DOI: 10.4236/am.2019.104017(PDF)
Paper Id: 92036 (metadata)

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A Plant Image Compression Algorithm Based on Wireless Sensor Network

Authors: Guiling Sun, Yuanqiang Chu, Xiaochao Liu, Zhihong Wang

This paper designs and implements an image transmission algorithm applied to plant information collection based on the wireless sensor network. It can effectively reduce the volume of transmitted data, low-energy, high-availability image compression algorithm. This algorithm mainly has two aspects of improvement measures: the first is to reduce the number of pixels that transmit images, from interlaced scanning to interlaced neighbor scanning; the second is to use JPEG image compression algorithm [1], changing the value of the quantization table in the algorithm [2]. After image compression, the image data volume is greatly reduced; the transmission efficiency is improved; and the problem of excessive data volume during image transmission is effectively solved.


Journal: Journal of Computer and Communications
DOI: 10.4236/jcc.2019.74005(PDF)
Paper Id: 91989 (metadata)

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Village Administration in Indonesia: A Socio-Political Corporation Formed by State

Authors: Chanif Nurcholis, Sri Wahyu Krida Sakti, Ace Sriati Rachman

Village government is the lowest level administration in Indonesia. It is formed by law. However, a village head is not a government official and also village employees are not civil servants. The Village Government has authority to administer government affairs; nevertheless, the central government doesn’t decentralize the government affairs to the Village. The organizational structure is like a municipal, consisting of a mayor and council; yet the mayor is not chief of local bureaucrats and the council is just a voluntary board that func-tions like a council. Such a fact is problematic, which raises the question re-garding the legal status of village in the administration of the Republic of In-donesia. The study used a post-positivistic approach with a qualitative meth-od. Jabon Mekar village, Bogor Regenstschap (Municipal), Banten Province was chosen as the locus of the study. The results conclude that the village administration is a pseudo local self-government. To that end, a village institution needs to become a public organization to comply with the Indonesia Constitution of 1945, in order to provide public services that would prosper the people.


Journal: Open Journal of Political Science
DOI: 10.4236/ojps.2019.92021(PDF)
Paper Id: 91953 (metadata)

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Impacts of Zebra Mussel Veliger Control Treatments on the Survival of Water-Hardened Landlocked Fall Chinook Salmon Eggs

Authors: Sierra Hillard, Nathan Huysman, Michael E. Barnes

Several treatment options have been developed to minimize the spread of zebra mussel Dreissena polymorphaveligers (larvae) during fish transportation. However, the effect of these treatments on the survival of newly-fertilized salmonid eggs has not been evaluated. This study examined the survival of water-hardened landlocked fall Chinook salmon Oncorhynchus tshawytscha eggs after one of four different treatments: 1) Control (no chemicals), 2) 100 mg/L formalin for two hours, 3) 750 mg/L of potassium chloride for one hour followed by 20 mg/L formalin for two hours, and 4) 750 mg/L of potassium chloride for one hour followed by 20 mg/L formalin for three hours. The 100 mg/L formalin treatment produced complete egg mortality. Survival to hatch was not significantly different among the other three treatments. Based on these results, the use of 750 mg/L potassium chloride for one hour followed by 20 mg/L formalin for three hours is recommended when moving Chinook salmon eggs from waters potentially infested with zebra mussels to hatcheries for incubation.


Journal: Natural Resources
DOI: 10.4236/nr.2019.104008(PDF)
Paper Id: 91938 (metadata)

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A Crossroads for Social Entrepreneurship: Profits versus Ethics

Authors: Sandrine Fuentes, Hugo Valenzuela-Garcia

This paper reveals one of the most critical challenges faced by Spanish social entrepreneurship: either prioritizing ethical, social and environmental objectives or profit-seeking. Social entrepreneurship (those initiatives that pursue social and environmental objectives as well as economic ones) has become a very celebrated sector welcomed by political leaders, international corporations, large financial actors and the public opinion alike. The motto that another economy is possible is gaining momentum while an enormous number and variety of both public and private promotional programs are fostering and energizing such promising sector in practically any spot of the world. However, unlike more conventional enterprises, social entrepreneurship face some crucial challenges due to its own hybrid nature and the goal of making philanthropy (i.e., ensuring the social and environmental values) compatible with profit. A mixed-methods oriented research conducted in Catalonia (Spain) reveals some of these contradictions and challenges. As concluding remarks, we provide some clues to reconsider the scope of social entrepreneurship under a different political economy framework.


Journal: Open Journal of Business and Management
DOI: 10.4236/ojbm.2019.72058(PDF)
Paper Id: 91879 (metadata)

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Approaches on the Major Predictors of Blood Transfusion in Cardiovascular Surgery: A Systematic Review

Authors: Maria Christiane Valéria Braga Braile-Sternieri, Eliana Migliorini Mustafa,
Victor Rodrigues Ribeiro Ferreira, Sofia Braile Sabino, Cibele Olegário Vianna Queiroz, Bethina Canaroli Sbardellini, Giovanni Braile Sternieri, Lúcia Angélica Buffulin de Faria, Idiberto José Zotarelli Filho, Domingo Marcolino Braile

Introduction: Experimental Clinical studies have shown that loss of up to 77.0% of red cell mass can be tolerated as long as it kept the blood volume. However, the blood volume loss of about 34.0% is fatal. The initial attention in patients with bleeding should be given to maintaining blood volume and oxygen transport. Thus, transfusions of allogeneic blood products are associated with an increased risk of morbidity and mortality in cardiac surgery. Some transfusion risk scores have been proposed for cardiac surgery patients. Objective: To review and discuss literature blood transfusion (blood components gradient) in cardiovascular surgery versus polytrauma, gastrointestinal bleeding, and neoplastic diseases. Methods: The model followed for the review was PRISMA. We used the databases as Scielo, Lilacs, Google Scholar, PubMed articles and works of scientific and doctoral theses master. Results: According to the discussion in the literature, the acute bleeding of large volumes is challenging to emergency services. Accordingly, the need to support hemotherapeutics led to the development of protocols for more rational utilization of the monitored blood components. Conclusion: Hemotherapy services have adopted a very dynamic approach to the clinical condition presented by patients, the need for four or more red blood cell units.


Journal: Health
DOI: 10.4236/health.2019.114033(PDF)
Paper Id: 91862 (metadata)

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