bluuebunny/crossref_metadata_2025 huggingface dataset:
Influence of Madhuca Longifolia Biodiesel Blends on Diesel Engine Characteristics
Authors:   Department of Mechanical Engineering, VR Siddhartha Engineering College, Vijayawada, AP, India, Rani* G. Jamuna , Rao Y.V.Hanumatha ,   Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation,Vaddeswaram, Andhra Pradesh, India., Balakrishna B. ,   Department of Mechanical Engineering, Jawaharlal Nehru Technological University, Kakinada, Andhra Pradesh, India.
Published: March 2020

In daily life the demand for fuel is increasing and there is a need to find alternate fuels to overcome the environmental pollution problems. In this present study, experimentation was done on a diesel engine, at a speed of 1500 rpm by varying load from 0% to 100% using diesel and Madhca Longifolia biodiesel blends and the results were analysed to know the engine behaviour. Madhuca Longifolia biodiesel was prepared by using the acid catalyst method followed by transesterification process and then the tested biodiesel blended fuel samples MLB25, MLB0, MLB75, MLB100 were prepared by adding Madhuca Longifolia biodiesel in the rate of 25, 50, 75, 100 for diesel on volume basis. From the aquired results It was perceived that the performance of the engine was improved with MLB25 fuel sample compared to all other biodiesel blend fuel samples. And for all biodiesel blend fuel samples, the exhaust emissions like unburned hydrocarbons (ubhc), carbon oxide (CO), Smoke were reduced compared to the diesel and nitrogen oxide emissions (NOx) were increased slightly compared to diesel fuel. From the observed results, the MLB25 fuel sample suggested as alternate fuel in diesel engines in place of conventionsl diesel.
A Work on Welding Productivity and Economy for Smaw & Fcaw Processes
Authors:   Information Systems Management Department, BINUS Graduate Program-Master of Information Systems Management, Bina Nusantara University Jakarta, Indonesia, Fachrizal*  , Fajar Ahmad Nurul ,   Information Systems Management Department, BINUS Graduate Program-Master of Information Systems Management, Bina Nusantara University Jakarta, Indonesia
Published: March 2020

Every welding process possess its own advantages and limitations and selected after careful analysis and study of variables related to the process /product form and application criteria. Factors governing the selection of welding process includes the type of the product to be welded, material, joint geometry, field and service conditions, productivity expectations, capital cost, availability of resources, quality requirements, net cost savings etc. Currently in India, shielded metal arc welding is the major welding process dominates the welding industry and plays a key role compared to other welding processes. To achieve the higher productivity and cost savings, it is necessary to adopt suitable welding process, which can be superior to SMAW and can be justified fully in terms of productivity, quality and cost. Comparative production studies were conducted to establish the facts and to arrive conclusion. This concept will be applicable for pipe spools welding in a fabrication shop for welding groove and fillet weld joints in out of position. Process will be applied for large bore spools welding i.e. for Pipe diameter equivalent or greater than 168 mm OD and wall thickness of 7.11 mm and above. For study purpose only two welding processes were taken into account i.e. SMAW and FCAW. Since carbon steel pipe spools fabrication is 85% of the total scope, selection of the high productive and cost economic welding process plays a vital role.
Ultra Wideband Compact Mi crostrip Patch Antenna for C , X and K band Applications
Authors:   Department of electronics and communication University of Allahabad, Prayagraj-211002,U.P., India., Yadav *Shekhar , Jaiswal Komal ,   Department of electronics and communication,University of Allahabad, Prayagraj-211002,U.P.,India, Kumar Dheeraj ,   Department of Physics and Electronics, Rajdhani College, Delhi (University of Delhi)., Singh Rajeev ,   Department of electronics and communication University of Allahabad, Prayagraj-211002,U.P., India.
Published: March 2020

A novel stacked double U, angular ring shaped MIMO antenna is designed using DGS, and a pair of balanced shorting pin is proposed for C, X, and K-band applications. The aim of this design is to enhance the bandwidth by using different techniques in a compact MSA. The proposed antenna is designed on an FR4 substrate with permittivity of 4.4 is used in this design with dimension of 10×10 mm2 with two-microstrip line and one coaxial feed as a feeding mechanism. Two asymmetrical antennas of FR4 substrate are stacked with an air gap of thickness 1.6mm that exhibits a low correlation coefficient; low mutual coupling and refection coefficient is below-25 dB. The antenna is simulated through HFSS software 13.0 version shows Operates at UWB of frequency range 6.17-9.3, 18.1-18.7 GHz with maximum radiation efficiency of 83%.
Harmony Search Algorithm Based Control of DFIG Wind Energy System in Multi Machine Power Systems
Authors:   PG Scholar, Electrical and Electronics Engineering, JNTUA, Ananthapuramu, AP., Nikhitha M. J. , kumar P. Bharat ,   Assistant Professor, Electrical and Electronics Engineering, JNTUA, Ananthapuramu, AP., Sujatha P. ,   Professor, Electrical and Electronics Engineering, JNTUA, Ananthapuramu, AP.
Published: March 2020

In wind energy conversion system (WECS) Double Fed Induction generator (DFIG) preferred, though it has many advantages when used in wind energy system, but DFIG is very sensitive to the grid disruptions. When an error occurs DFIG is greatly affected in the multi- machine system. The voltage and power gets deviated. The main purpose of this paper is to stabilize the DFIG under fault conditions, but the performance of the DFIG is depends on the PI controller parameters. By using Harmony Search Algorithm (HSA) technique the PI controller parameters are tuned, by this the efficiency of a system can be improved and the voltage and power oscillations can be reduced. The simulation is performed in detailed model of four-machine two-area system. The whole process is done in the MATLAB Simulink software. A comparative study is done between tuning of PI parameter with HSA and actual existing system.
The Modeling Framework for the Need of Training Ship on Maritime Vocational Education
Authors:   Maritime Polytechnic of AMI Makassar, Indonesia., Rusi* Rusnaedi , Baso Suandar ,   Naval Architecture Department, Engineering Faculty, Hasanuddin University., Asri Syamsul ,   Naval Architecture Department, Engineering Faculty, Hasanuddin University.
Published: March 2020

The seafarer’s profession will be facing a few strong challenges today and future next. Correspondingly, the Standards of Training, Certification and Watchkeeping for Seafarers (STCW) requires tightly the maritime vocational education that must produce graduates with appropriate and needed competences related with international trade perspective in the shipping sector. In order to improve student skill, a training ship is needed by maritime vocational education as real practice for student. This research describes a modeling framework of basic ship design for training ship of the maritime vocational education. The modeling framework was divided into three parts namely the model of training ship type selection, the capacity of the training ship, and the main dimensions of the training ship design. The modeling framework was applied to Maritime Polytechnic of AMI Makassar as a case study. The research results show the selected type ship was passenger-cargo ship type 37.20. The capacity of the training ship was about 150 students with cargo capacity 50 ton. The main dimensions of the training ship design were obtained where length between perpendiculars (Lbp), breadth (B), height (H), and draft (T) were 72.00 m, 12.00 m, 5.50 m, and 2.53 m respectively. The main dimensions of the training ship design were corrected as well by the parameters of main dimension ratio, geometric form coefficient, weight, and initial static stability.
Image Generation u sing Variational Autoencoders
Authors:   Department of CSE, Faculty of Science and Technology, ICFAI Foundation for Higher Education, Hyderabad, India, Panguluri * Purnima Sai Koumudi , Kamarajugadda Kishore Kumar ,   Department of ECE, Faculty of Science and Technology, ICFAI Foundation for Higher Education, Hyderabad, India
Published: March 2020

The proposed system generates new images from the existing images using variational autoencoders. The autoencoder aims to map the input image to a multivariate normal distribution in the latent space. Variational autoencoder transforms input image into a remarkable output by reducing the reconstruction and KL divergence losses. The primary advantage of implementing variational autoencoder over the other autoencoders is that it follows a specific probability distribution called Gaussian distribution and results in generating high quality images.
Software Defined Networking Based Protection against DDOS in IoT
Authors:   Department of Computer Science and Engineering, Francis Xavier Engineering College, Tirunelveli, India., Pajila P. J. Beslin , P. Jenifer ,   Department of Computer Science and Engineering, Francis Xavier Engineering College, Tirunelveli, India., C.* Karpagavalli ,   Department of Computer Science and Engineering, St.Mother Theresa Engineering College, Tuticorin, India., Sweety A. Angeline Valentina ,   Department of Computer Science and Engineering, Francis Xavier Engineering College, Tirunelveli, India., Lakshmi R. Muthu ,   Department of Computer Science and Engineering, Francis Xavier Engineering College, Tirunelveli, India.
Published: March 2020

Safety has become enormously important with the proliferation of internet of Things(IoT) technologies. Most of the IoT devices are linked with the DDoS attack, there are many risk nowadays for IoT because of DDoS attack.The new software-defined everything(SDx) model offers a way to handle IoT devices securely. The proposed S-IOT framework consists of a pool that includes S-IoT controllers, S-IoT switches and IoT devices. A new ENeFS algorithm is proposed to identify and reduce the DDoS attack. The proposed algorithm uses neuro fuzzy instruct rule to identify the DDoS attack and the number of data packets count also considered for the identification. The simulation results shows that the proposed algorithm performs better to improve the reliability of the IoT with different and unsafe gadgets.
Malicious Node Detection Methodologies in MANETS
Authors:   Department of Computer Science and Engineering, Jawaharlal Nehru Technological University Hyderabad (JNTUH), Hyderabad, Telangana., Olounabadi* Seyed Amin Ahmadi , Damodaram Avula. ,   Department of Computer Science and Engineering, Jawaharlal Nehru Technological University Hyderabad (JNTUH), Hyderabad, Telangana., Prasad V Kamakshi ,   Department of Computer Science and Engineering, Jawaharlal Nehru Technological University Hyderabad (JNTUH), Hyderabad, Telangana, SRINIVAS PVS ,   Department of Computer Science and Engineering, Sreenidhi Institute of Science and Technology, Hyderabad, Telangana.
Published: March 2020

Mobile Ad hoc Network (MANET) is essentially a framework much less network. It carries out certainly not demand any kind of predetermined network. Every nodule is serving as a recipient and also a transmitter. All the nodules in the MANET are essentially taken on as functioning within a welcoming as well as collaborative network circumstance. There is essentially no base station to handle the relocating gadgets. There is essentially no safety to guard the nodules. Any kind of nodule may function as a misbehaving nodule. Such uncooperative habits may significantly diminish network efficiency as well as might also cause complete interaction failure. The destructive nodules may effortlessly assault the mobile nodules. In this particular newspaper, our experts have essentially suggested an Intrusion Detection System through which the harmful nodules are essentially spotted and also certainly there due to the functionality of the network are going to be essentially raised.
Design of a Harmonic Filter for a Grid Connected Doubly Fed Induction Generator under Unsymmetrical Fault Conditions
Authors:   Department of Electronics and Electrical Drives Branch in G.Narayanamma Institute of Technology and Science (G.N.I.T.S), Hyderabad, India., Soumya* Chilla , Rao Ranuva Nageswara ,   Associate Professor, Department of Electrical and Electronics Department at G. Narayanamma Institute of Technology and Science (G.N.I.T.S), Hyderabad, India.
Published: March 2020

The analysis and controlling of harmonics in a doubly fed induction generator (DFIG) is studied under the unsymmetrical fault conditions in MATLAB/SIMULINK software. The proposed DFIG uses wind energy as the primary source for which is used for power generation. Wind energy is a non-polluting renewable energy resource that is available free of cost but when the wind is used, harmonics are introduced into the power system, so voltage imbalances occur in the grid. In order to mitigate the voltage imbalances (or) ripples in the voltage or current, LCL filters are introduced in the wind turbine because they are chiefly used for high power and low-frequency applications. Various unsymmetrical faults are simulated by referring the specifications selected and analysed with the tripping time for the desired duration of time in the circuit breaker, voltage and current waveforms are analysed only during the transient period on the basis of FFT analysis to know about THD content.
Techno-Economic Feasibility of Wind Power Farms in India
Authors:   Assistant Professor Department of Management, Symbiosis International (Deemed University) Pune, India., Paul* Dipen , Pitke Poorva ,   Assistant Manager, Department of Mechanical. Symbiosis International (Deemed University) Pune, India., Karmarkar Purva ,   Department of Environmental Science, Symbiosis International (Deemed University) Pune, India.
Published: March 2020

Wind is a powerful and renewable source of energy that flows in every corner of the surface of the planet. As the world moves towards renewable and alternate energy sources, the potential of wind energy has been recognized and methods to use it to its maximum potential are being explored. India has been harnessing wind power over the years, but only lately, it has sent an ambitious target of achieving 60 gigawatts (GW) of wind installed capacity by 2022. The government has issued several tenders to invite private players or Independent Power Producers (IPPs) to develop wind energy projects. Many foreign investors and the Private Equity players have shown interest in investing in this growing renewable energy (RE) market in India. However, developing a wind project comes with lot many challenges as compared to any other RE project. These challenges range from land availability to seeking grid connectivity approvals and evacuation of the power. Along with this, the current reverse bidding process for the tariffs, have made the per unit tariffs to cost as low as INR 2.4. Hence, it is important to consider the technical and commercial feasibility of the project to function at these tariffs. This paper studies the current scenario of wind energy in the Indian market and analysis the potential for the development of wind projects. It also analyses the technical and commercial feasibility of the project by assuming a 300 MW project, having INR 2.5 as tariff, using Wind Resource Assessment (WRA) and Financial Model.
REST APIs for Emerging Social Media Platforms
Authors:   B. Tech graduate, Department Computer Science and Engineering (SCOPE) of Vellore Institute of Technology, Vellore, India., Sinha* Poorva , Kumar Kakelli Anil ,   Associate Professor at the School of Computer Science and Engineering (SCOPE), Vellore Institute of Technology, Vellore, Tamil Nadu, India.
Published: March 2020

People are quite acquainted with the emerging social networking sites like Facebook, Twitter, Pinterest©, and LinkedIn. Many web developers and technical industry professionals are using these websites and applications consistently but may not be aware of the types of APIs and supported tools available and used for leading social networking platforms. Social networking sites have millions of active users who discover and share an enormous amount of user-generated content on a daily basis. Most of these platforms provide APIs and tools for web developers to incorporate social sharing into their applications and make it possible for the applications to leverage the features and functions of the platforms. Using these APIs and tools provided by social networking platforms, developers can build varied and innovative applications that feature social sign-ins, streaming real-time social data, social sharing and engagement, and much more. This paper represents a review and comparative study of REST APIs or APIs, in general, of the emerging social network platforms by discussing their API structure along with an overall understanding of the varied features these sites are born with or were improved to. Ultimately, we understand the reasons to why REST has become the building block of most APIs and is the eventual future.
Perceived Stigmatization and Emotional Quotient of the Homeless Adolescents
Authors:   Cavite State University- Silang Campus, Ulanday* Ma. Leah Pacleb , A. Abando, Marie Christine ,   Cavite State University- Silang Campus., O. Belardo Einon Dane Kryzl ,   Cavite State University- Silang Campus, N. Loreto, Efephany Joy ,   Cavite State University- Silang Campus.
Published: March 2020

Homeless adolescents nowadays learn how to survive alone, since no adult takes responsibility of them. They live or rather struggle to survive usually in the places near shopping malls, stations and offices, and other places which are lit up at night or in markets, in railway stations and even under bridges. With this fact, the amount of stigmatization they receive from the people who manage to insult while seeing them could be high and in that situation can be resulted to a higher stress and unfortunately could affect their emotions. This study is intended to determine the relationship between stigmatization and emotional quotient of homeless young adolescents with the aim of creating an intervention program within the results. This study used purposive sampling techniques in selecting the respondents wherein only those people without a home, and therefore typically living on the streets and belongs to age of 13-19 years old were included as respondents for a total of 70. The method used descriptive- correlational design. The results on the relationship between variables perceived stigmatization and emotional quotient of the homeless adolescent shows that there is no significant relationship. It can be inferred that the level of perceived stigmatization of the participants has no impacts to the emotional quotient of the homeless adolescents. Moreover, homeless adolescent tend to look at the brighter side and became more positive in life to accept their situations.
FAKTOR-FAKTOR YANG MEMPENGARUHI MINAT BERWIRAUSAHA PADA MAHASISWA JURUSAN MANAJEMEN FAKULTAS EKONOMI UNIVERSITAS ISLAM KALIMANTAN MUHAMMAD ARSYAD AL–BANJARY BANJARMASIN
Authors: Peri Periyadi , Sri Bulkia Sri Bulkia , Risnawati Risnawati
Published: March 2020

: The main objective in this research is to study and analyze (1) How entrepreneurial factors consisting of social and family environment, innovation and creative, and technological environment influence the interest in entrepreneurship. (2) How does the social and family environment influence the interests of entrepreneurship. (3) How the influence of innovation and creativity on entrepreneurial interest. (4) How is the influence of the technological environment on entrepreneurial interest. The targets in this study include (1) the results of these researchers can be input for other researchers to conduct similar studies in the future. (2) Input materials can be used to enhance the development of student interest in entrepreneurship. (3) The results of this study are expected to be used as evaluations and useful information to make improvements oriented to the future, especially on students' interest in entrepreneurship. This research was conducted with quantitative methods and using analysis methods with SPSS Windows For Data as a data analysis tool.
Perspective of Medical and Dental Undergraduates towards Complementary and Alternative Medicine
Authors: Saher Fizza
Published: March 2020

Background: The prevalent use of complementary and alternative medicine (CAM) requires health professionals including doctors and dentists having the essential knowledge to have better recommend their patients. This has lead to an increased need for integration of CAM teaching at the undergraduate level. Thus, the purpose of the study was to assess the perspective of complementary and alternative medicine among Pakistani medical and dental undergraduates.

Methods: A questionnaire based cross sectional survey was conducted among first to fifth year undergraduate medical and dental students at Sindh Medical College and Ziauddin University in Karachi, during April until May 2019, using a structured 13-item questionnaire. Descriptive statistics were calculated for baseline characteristics. Frequency and proportions were calculated for categorical variables using SPSS version 20.

Results: The response rate was 100% (40.7% for males and 59.3% for females). The mean age of medical and dental students was 20.5±1.39 years. Almost three-fourth of students (75.1%) had the knowledgeof CAM. The most experienced CAM modality amongst all was Yoga (23.4%) and Homeopathy (20%). Nearly 69.4 % of students believed that CAM is beneficial for medical and dental healthcare and 44.1% students will recommend CAM to their patients in future. Almost 39% of students think that CAM should be included into undergraduate medical and dental curriculum.

Conclusion: This study showed an encouraging interpretation of both medical and dental students regarding CAM knowledge and benefits. Majority of the students have optimistic attitude towards CAM practice in future and for the integration of CAM studies at undergraduate level.
THE PROCESS OF STYRENE POLYMERIZATION UNDER ACOUSTICAL RADIATION
Authors: Lavrenyuk Tat'yana , Ul'yanov Boris , Raskulova Tat'yana
Published: March 2020

Cavitation treatment in the suspension polymerization of styrene leads to an increase in the yield of the finished product
SOME WAYS OF MODERNIZATION INSTALLATION OF METHANOL CRUDE CATALYTIC SYNTHESIS
Authors: Mashukov Evgeniy , Korchevin Nikolay
Published: March 2020

With due regard for economy of energy resources and optimization of process

technological parameters the possibility of replacement of the tubular furnace for heating of gas raw

mix by electro heater is considered
DESIGN A VERTICALLY FLARING FURNACE OF A DELAYED COKING UNIT JSC «ANHK»
Authors: Portnova Natal'ya , Dement'ev Anatoliy , Podoplelov Evgeniy
Published: March 2020

In the work, the project is the replacement of a hip furnace of a delayed coking unit

for vertically-torch furnace with higher technical and economic performance and lower fuel consumption.
RELATIVISTIC EFFECTS IN CHEMICAL SHIFTS 13C NMR OF HALCOHEN-CONTAINING COMPOUNDS
Authors: Rusakov Yuriy , Rusakova Irina , Krivdin Leonid
Published: March 2020

A systematic study was made of the change in the magnitude of the error for

nonrelativistic calculations of the chemical shifts of carbon in the 13C NMR spectra in a wide range of

model chalcogenides, depending on the atomic number of the chalcogen, the hybridization of the

carbon atom and its position in the molecule with respect to the chalcogen atom.
The Ramsey Number of Fano Plane Versus Tight Path
Authors: Balogh József , Clemen Felix Christian , Skokan Jozef , Wagner Adam Zsolt
Published: March 2020

The hypergraph Ramsey number of two $3$-uniform hypergraphs $G$ and $H$, denoted by $R(G,H)$, is the least integer~$N$ such that every red-blue edge-coloring of the complete $3$-uniform hypergraph on $N$ vertices contains a red copy of $G$ or a blue copy of $H$. The Fano plane $\mathbb{F}$ is the unique 3-uniform hypergraph with seven edges on seven vertices in which every pair of vertices is contained in a unique edge. There is a simple construction showing that $R(H,\mathbb{F}) \ge 2(v(H)-1) + 1.$  Hypergraphs $H$ for which the equality holds are called $\mathbb{F}$-good. Conlon asked to determine all $H$ that are $\mathbb{F}$-good.In this short paper we make progress on this problem and prove that the tight path of length $n$ is $\mathbb{F}$-good.
Sects and Lattice Paths over the Lagrangian Grassmannian
Authors: Bingham Aram , Uğurlu Özlem
Published: March 2020

We examine Borel subgroup orbits in the classical symmetric space of type $CI$, which are parametrized by skew symmetric $(n, n)$-clans. We describe bijections between such clans, certain weighted lattice paths, and pattern-avoiding signed involutions, and we give a cell decomposition of the symmetric space in terms of collections of clans called sects. The largest sect with a conjectural closure order is isomorphic (as a poset) to the Bruhat order on partial involutions.
The Asymptotic Normality of $(s,s+1)$-Cores with Distinct Parts
Authors: Komlós János , Sergel Emily , Tusnády Gábor
Published: March 2020

Simultaneous core partitions are important objects in algebraic combinatorics. Recently there has been interest in studying the distribution of sizes among all $(s,t)$-cores for coprime $s$ and $t$. Zaleski (2017) gave strong evidence that when we restrict our attention to $(s,s+1)$-cores with distinct parts, the resulting distribution is approximately normal. We prove his conjecture by applying the Combinatorial Central Limit Theorem and mixing the resulting normal distributions.
$b$-Invariant Edges in Essentially 4-Edge-Connected Near-Bipartite Cubic Bricks
Authors: Lu Fuliang , Feng Xing , Wang Yan
Published: March 2020

A brick is a  non-bipartite matching covered graph without non-trivial tight cuts. Bricks are building blocks of matching covered graphs. We say that an edge $e$ in a brick $G$ is $b$-invariant if $G-e$ is matching covered and a tight cut decomposition of $G-e$ contains exactly one brick. A 2-edge-connected cubic graph is essentially 4-edge-connected if it does not contain nontrivial 3-cuts. A brick $G$ is near-bipartite if it has a pair of edges $\{e_1, e_2\}$ such that $G-\{e_1,e_2\}$ is bipartite and matching covered.

Kothari, de Carvalho, Lucchesi  and Little proved that each essentially 4-edge-connected cubic non-near-bipartite brick $G$, distinct from the Petersen graph, has at least $|V(G)|$ $b$-invariant edges. Moreover, they made a conjecture: every essentially 4-edge-connected cubic near-bipartite brick $G$, distinct from $K_4$, has at least $|V(G)|/2$ $b$-invariant edges. We confirm the conjecture in this paper. Furthermore, all the essentially 4-edge-connected cubic near-bipartite bricks, the numbers of $b$-invariant edges of which attain the lower bound, are presented.
Informed Eclecticism in the Design of Self-Access Language Learning Environments
Authors: Edlin Curtis
Published: March 2020

Self-access learning environments traditionally received only rudimentary treatment and attention compared to classrooms as many educators presumed that it was a teacher and the instructional models, methods, and approaches that were the greatest mediators in learning. In recent decades, self-access centers and subsequently other self-access learning environments and digital spaces have been burgeoning throughout the world, created primarily with the goal of supporting learner autonomy. However, old classroom-centric learning and design paradigms are sometimes applied to the design of self-access environments despite the relative spatial, temporal, and grouping freedom available. By distancing themselves from the tendency to choose one particular learning paradigm on which to base their designs, as is often the case in instructional design, educators and designers open their designed environments to the possibility of becoming a rich space, informed by numerous and diverse fields, that can account for varied ways of learning and knowing. Looking to other fields to further understand what variables can either catalyze or obstruct various ways of knowing and learning can inform the design, development, support, and management of self-access language learning environments. Drawing on knowledge from a variety of disparate fields, this paper suggests six principles that can be applied in order to augment a wide variety of types of learning in self-access learning environments, and particularly those concerned with language learning.
Design and Management of a Self-Access Language Learning Space Integrated into a Taught Course
Authors: Alzahrani Sahar , Wright Vicky
Published: March 2020

This paper reports on the design and management of an online self-access language learning (SALL) space that was used with a group of Saudi medical students to complement classroom-based learning. The aim was to increase the opportunities for communication and language practice and, more specifically, to help develop the learners’ language learning autonomy (Little, 1999). In a pre-study, a questionnaire and a focus group were used to collect information about the students’ needs and interests in language learning. The design of this space was informed by the students’ feedback on their language learning needs and styles as recommended by Breen (1986) and Marsh (2012). Desire2Learn, a widely used virtual learning environment, was used to provide learners with an online self-access center because of the many features it has which would help learners to take control of their learning. The learning resources and online tools included instant messaging (IM), a news stream, access to a facilitator and other learning support, moderated discussions, videos, images, activities and quizzes, as well as links to external materials and to free self-access language learning resources. A description will be provided of how the materials, the tools, and the facilities were integrated within this space along with the justification for each of the elements. A look ahead to how this study could be extended for use with all learners enrolled in the medical scheme of the university will be discussed at the end of the paper.
Introduction: Learning Spaces and Curricula: Models for Enhancing LLS Usage and Learner Autonomy Development Through Integration
Authors: Thornton Katherine
Published: March 2020

Language learning spaces (LLSs) are established with many different aims in mind and vary drastically from one institution to another. They may have been established to cater for a specific part of the student population, such as a foreign languages department or international students on non-degree programmes, or they may also be open to the general student population, staff, and even the general public. They may focus primarily on providing opportunities for target language interaction, especially in EFL environments where English is not commonly used outside the classroom, or have the development of learner autonomy as their main mission.
Developing “SotonSmartSkills”: A Reflection on Scaffolded Independent Learning Programmes
Authors: Mar-Molinero Vanessa , Lewis Christian
Published: March 2020

By focussing on the physical and virtual space of a Language Resources Centre and the development of a wide set of digital literacies skills, this article discusses the SotonSmartSkills (Mar-Molinero & Lewis, 2014) programme developed at the University of Southampton, UK. Through a wide range of scaffolded courses designed to support the transition to the learner autonomy required of students in Higher Education, the programme equips students with skills, strategies, techniques and tools vital for success in their language learning (for international students) and more generally, in their academic achievement and professional life. In this paper we illustrate this initiative with the specific example of an integrated SotonSmartSkills module on our Pre-Sessional English programmes
Have a Look Around: The Effect of a ‘Push’ Activity on Future SAS Use
Authors: Parsons André , Warrington Stuart
Published: March 2020

Although mandatory regular use of self-access centres is surprisingly common, this goes against the purpose of them to foster autonomous learning. However, some students never consider using such resources without being pushed to do so. In order to create an opportunity to discover a self-access station (SAS) at one Japanese university, a single assignment was designed and implemented requiring students to visit the SAS in order to answer questions related to its use and facilities. Thereafter, an end-of-term questionnaire was conducted to investigate how the assignment affected student awareness and use of the SAS, and whether they would have visited the SAS had there been no task. The results show that awareness of the SAS was raised. However, most students did not use the SAS post-assignment and indicated they would not have used it without the assignment. Reasons provided suggest time constraints, location, and issues of comfort to be contributing factors.
“Floración de marzo” de David Mejía Velilla
Authors: Espino Barahona Erasto Antonio
Published: March 2020

He querido titular este ensayo de investigación literaria sobre el poema “Floración de marzo” del colombiano David Mejía Velilla con un trío de palabras: “contemplación, trascendencia y libertad”, quizás porque en la simbología numérica, el tres habla de plenitud y de perfección y esta comunicación mía aun fragmentaria y conjetural— quiere cercar, aferrar, si se quiere, la idea de plenitud. No la ple-nitud de este gesto crítico —el cual es ciertamente limitado—; sino la plenitud del contenido, de la realidad histórica a la que alude el poema.
Transición epidemiológica y las diferencias en la salud de la población entre la periferia y el centro urbano del Área Metropolitana de Panamá, 2001- 2011.
Authors: Gordón Carlos
Published: March 2020

A partir de la base de datos de Hechos Vitales que compila el Instituto Nacional de Estadística y Censo (INEC), de datos históricos sobre la mortalidad compilados por W. Gorgas durante la construcción del Canal tanto por franceses como por norteamericanos (1884- 1913) y revisión bibliográfica, se describe la evolución en el perfil epidemiológico de la mortalidad en ciudad de Panamá. Una comparación entre la mortalidad registrada en el Centro urbano y la periferia del Área Metropolitana de Panamá, durante la primera década del siglo XXI.  Este análisis permite establecer que la mortalidad en esta región se caracteriza por una alta proporción de muertes por enfermedades degenerativas (cáncer, enfermedades circulatorias, diabetes), relacionadas con estilos de vida y condicionantes urbanos y una menor proporción en las muertes relacionadas con afecciones perinatales y por enfermedades trans-misibles. Las muertes por causas externas mantienen una tendencia al aumento, concentrada en barrios del núcleo urbano y en corregimientos con alta proporción de asentamientos informales de la periferia. Las tasas de mortalidad para todos los grupos de enfermedades analizadas son mayores en el centro urbano que en la periferia.
Panamá
Authors: Fisher Eloy
Published: March 2020

Este documento de posición analiza el crecimiento y la inflación en Panamá. Panamá experimenta un círculo virtuoso económico entre una tasa balanceada y sostenible de crecimiento a largo plazo y ni-veles moderados de inflación, fenómeno que los economistas denominan la coincidencia divina. A futuro, con el repliegue gradual del rol del Estado en aras de fortalecer la actividad del sector privado, se dan las condiciones macroeconómicas para mantener y recrear tal coincidencia como la nueva si-tuación normal de la economía panameña. La diversificación de la economía, la prudencia macro-fiscal, perspectivas favorables de crecimiento en sectores claves (como lo son las utilidades públicas, minas y canteras, y transporte, almacenamiento y comunicaciones —sectores a su vez dependientes del comercio internacional y la exportación de servicios) y la reversión a la media de la inflación, incluso a pesar de la incertidumbre económica internacional y geopolítica, constituyen pilares sólidos sobre los cuales descansa la actividad económica y el modelo de desarrollo del país. Se concluye con advertencias sobre el posible agotamiento del modelo de gasto discrecional en materia social, ya que los réditos de estas intervenciones han perdido potencia y en la medida que no se re-enfoquen, podrían trastocar el delicado equilibrio necesario para mantener y enraizar la coincidencia divina a nivel eco-nómico. Por eso, se concluye que la mejor política hoy en día debe ser prudente y cautelosa, y enfocada a generar capital social.

This position paper analyzes the growth and inflation in Panama. Panama experiences a virtuous circle for economy: a balanced and sustained rate of long-term growth, and moderate levels of inflation. This phenomenon is what economists call the divine coincidence. As the role of the Government withdraws gradually, in order to strengthen the activity of the private sector, the macroeconomic conditions to sustain and recreate such coincidence as the new normal situation of the Panamanian economy will emerge. The diversification of the economy, the macro-fiscal prudence, the favorable perspectives of growth in key sectors (such as public utilities, mines and quarries, and transport, storage and communications; which are sectors that depend upon international commerce and service exports), and the mean reversion of inflation —even despite the economic and geopolitical uncertainties— are the cornerstones upon which the economic activity and the development model of the nation lay. Warnings about the possible wears of the model of discretionary expenditure in social fields, since the revenues of these interventions have lost power. If there is no shift in the focus of these interventions, they could disrupt the delicate balance needed to maintain and strengthen the divine coincidence at the economic level. Thus, the best policy today must be prudent, cautious and focused to develop social capital.
Discurso de toma de posesión del Rector Magnífico de la USMA, Ing. Juan Planells
Authors: USMA Ipc
Published: March 2020

Como seguramente ustedes comprenden, me resulta muy difícil hablarles en una ocasión como esta. Son muchos los sentimientos que me acompañan en este día, y todos se agolpan en mi mente interponiéndose en el camino que le permite a la razón convertirse en palabra.El verme rodeado del cariño de tantos amigos y amigas con los que hemos compartido por cincuenta años las ilusiones de servir a la Iglesia y al país desde nuestra universidad católica, formando jóvenes bien preparados y comprometidos por construir un Panamá mejor, líderes que orienten a la sociedad en su búsqueda hacia un desarrollo de paz y de bienestar. Ustedes deben ser felices pues han sido fieles al compromiso de servir a los que lo necesitan. Decía José Martí “Ayudar al que lo necesita no solo es parte del deber, sino de la felicidad”.
Representaciones encontradas
Authors: Fitzgerald Carlos
Published: March 2020

A pesar del hecho de que la República de Panamá es un país relativamente nuevo (con tan solo 112 años como nación independiente), los orígenes de sus monumentos y estatuas dentro de la Ciudad de Panamá y otros pueblos, son sujetos de controversia, debido a la falta de información precisa. Aquella que está disponible es, mayormente, escasa y contradictoria. La estatua del jefe aborigen Urracá, líder de la revuelta de los ngäbe-buglé en contra de la colonización española temprana, es un claro ejemplo de ello. En el presente estudio arrojamos luz sobre los orígenes exactos de este importante monu-mento para la historia panameña.
La nueva agenda de derechos humanos para la igualdad y el desarrollo humano sostenible.
Authors: Herrera Luis Carlos
Published: March 2020

En los derechos humanos de primera generación; el interés era incorporar las libertades fundamenta-les, los derechos civiles, patrimoniales y políticos del individuo, para poner límites al poder del Estado. Los derechos de segunda generación son de contenido social para procurar las mejores condiciones de vida a las personas. Los derechos de tercera generación son derechos colectivos o derechos de los pueblos. Una nueva agenda de derechos humanos es la única forma de alcanzar un desarrollo soste-nible, donde el ser humano sea el centro del actuar nacional, regional y global. Debe ser holística, articuladora, universal, indivisible, multicultural, pluriétnica, con enfoque de género, inclusiva, con participación ciudadana, seguridad jurídica, solidaridad y cooperación internacional; que incluya estra-tegias y políticas públicas de respeto y garantía de los derechos de todas las personas, con especial protección a los grupos vulnerables. La eliminación de la violación a los derechos humanos —discri-minación de género, violencia contra la mujer, inseguridad, hambre, pobreza, el deterioro al medio ambiente, desigualdad social, la falta de acceso a la justicia, la migraciones, los efectos del cambio climático, la seguridad alimentaria, la educación de excelencia, la salud integral, el agua, la vivienda— son prioridades en una nueva agenda.
STUDY OF ACTIVATING EFFECT OF SURFACTANT DRUGS ON PULMONARY MACROPHAGES IN VITRO IN PATIENTS WITH BRONCHIECTASIS
Authors: Minukhin Dmitrii Valerevich
Published: March 2020

The state of surfactant system of lungs in chronic inflammation is known to disrupt their structural organization, causes shifts in the system itself, the severity of which depends on alveolar parenchyma injury rate. The cell destruction of aerohematical barrier is accompanied by changes in pulmonary surfactant system, its deficiency, development of dis− and atelectases, which increases the severity of lung injury and promotes the progression of bronchiectasis. Exogenously introduced surfactant restores local immunity and serves as a substrate for synthesis of its own surfactant. To determine the stimulatory effect of natural surfactant on receptors of the lung macrophages and its influence on activation of phagocytosis a comparative study of direct effect of infasurf on cell surface and formation of phagocytic vacuoles in macrophage elements of individuals with bronchodectic disease at an acute stage was performed . In bronchoalveolar lavage of patients the percentage and viability of pulmonary macrophages were determined. Other lavage material was investigated both as a baseline control and with infasurf. The electron microscopic examination of bronchoalveolar lavage macrophage elements in patients show that after incubation of cells with infasurf, there is a pronounced cell surface activation, formation of phagocytic vacuoles containing membranes of exogenous surfactant. Its small and large clusters were often observed lying freely between pulmonary macrophages, whereas in the control group (without infasurf) small fragments of tubular myelin or osmiophilous lamellar bodies were noted. Thus, the specific pharmacological action of surfactant drugs directly contributes to differentiation and maturation of pulmonary macrophages, their phagocytic function activation.

Key words: bronchiectasis, surfactant, pulmonary macrophages.
NON-STANDARD APPROACHES TO UPPER URINARY TRACT RECONSTRUCTION
Authors: Demchenko Vladislav Nikolaevich
Published: March 2020

The main alternatives to a standard ureteral reconstruction at the expense of urothelial−containing tissues are an autotransplantation of the kidney, replacement of the ureter, and interposition of autologous tissues that do not contain urothelium. This compares the tissues that have a similar histological structure, system of blood supply and innervation. Although the general trend in the assessment of the role of renal autological transplantation in the correction of ureteral defects is quite optimistic, there is a likelihood of severe complications, including severe transplant infection and its loss, complications from vascular anastomoses. At the same time the tissues having similar histological structure, system of blood supply and innervation have been compared. However, in some clinical situations it is not possible to replace the upper urinary tract with such a surgical approach, which forces the surgeon to use alternative and non−standard methods of ureteral reconstruction. Among the various types of ureteral reconstruction with enteral tissues, the leading role is the interposition of segments of the small intestine. Most authors point to the favorable results of this technique in terms of minimal lethality, low incidence of complications and stabilization of renal function after surgery. However, the problem of intestinal interposition is complications associated with enterotomy, electrolyte balance disorders, reabsorption into the blood of metabolism products and active secretion of mucus into the lumen of the urinary tract. The published reports have mostly described the positive results after ureteral plasticity of the buccal mucosa flap, but the length of the stricture in the implementation of such a treatment method should not exceed 5−6 cm ureter. Key words: ureteral reconstruction, kidney autotransplantation, intestinal ureteroplasty, ureteral reconstruction with buccal mucosa flap.
PATHOGENETIC PREDICTOR OF ENDOTHELIAL DYSFUNCTION IN PATIENTS WITH CARDIOEMBOLIC AND ATHEROTHROMBOTIC TRANSIENT ISCHEMIC ATTACKS
Authors: Vodopianov Vladimir Anatolevich
Published: March 2020

To establish criteria for the severity of pathogenetic disorders in the most common forms of transient ischemic attacks, i.e. cardioembolic and atherothrombotic, a differentiated approach to the treatment and primary prevention of vascular disorders of the cerebral ischemia and dysfunction of ischemia was substantiated. To objectify endothelial dysfunction, endothelin−1 was studied with its principal antagonist − a sodium oxide vasodilator and the major pro−inflammatory cytokine TNF−α. The blood was collected from the patients 12 hours after the first neurological symptoms appeared, the purpose of which was to determine the peak values of the disturbance of biochemical parameters. The data obtained indicate that with a transient ischemic cardioembolic attack, a milder clinical manifestations is caused by less pronounced pathogenetic changes in endothelial dysfunction. At the same time, in atherothrombotic form, the neurological symptoms grow more slowly and have a more pronounced character, which is also confirmed by the study of endothelial dysfunction. Thus, the study of endothelial dysfunction severity in patients with transient ischemic attacks can justify a differentiated pathogenetic approach to treatment and improve the prevention of vascular disorders. Primary prevention in a transient ischemic attack should be directed to causes that are extravasal in nature, and at atherothrombotic treatment to atherosclerosis, mainly reduction of atherosclerotic plaques. Despite quite similar correlation of major vasoconstrictor and vasodilator disorders, a mild and moderate clinical severity due to various occlusion factors is observed. To further determine the occlusion mechanisms, it is necessary to study rheological, coagulation and dynamic parameters of patients' blood. Key words: cardioembolic transient ischemic attack, atherothrombotic transient ischemic attack, endothelial dysfunction, endothelin−1.