bluuebunny/crossref_metadata_2025_split huggingface dataset:
Frequency Reconfigurable Slotted Split-Ring Antenna
Authors: Raval Falguni , Patel Tulsi , Upadhaya Trushit 
Published: April 2019

Background & Objective:
Partially grounded frequency reconfigurable antenna is discussed
in this paper. Antenna frequency cover is 4.2 GHz to 7 GHz and it has reconfigurable notchband
near 5 GHz frequency. Frequency rejection is achieved by using circular split-ring slots in radiating
element. The antenna can be reconfigured at 5.1 GHz, 5.4 GHz and 5.9 GHz by creating more
slots in outer most split-ring. Designed antennas are printed on FR-4, low-cost substrate having relative
permittivity of 4.4 and thickness of 1.6 mm.

Results & Conclusion:
Simulation of antennas is carried out using High Frequency Structure Simulator
(HFSS) software. Designed antenna has omni directional radiation pattern. The prototype antennas
are fabricated and tested using network analyzer. Good matching is observed between simulated
and measured results.
A Fuzzy Enabled Genetic Algorithm for Task Scheduling Problem in Cloud Computing
Authors: Agarwal Mohit , Saran Srivastava Gur Mauj 
Published: April 2019

Background & Objective:Cloud computing emerges out as a new way of computing which enables the users to fulfill their computation need using the underlying computing resources like software, memory, computing nodes or machines without owning them purely on the basis of pay-per-use that too round the clock and from anywhere. People defined this as the extension of the existing technologies like parallel computing, distributed computing or grid computing. Lots of research have been conducted in the field of cloud computing but the task scheduling is considered to be the most fundamental problem which is still in infancy and requires a lot of attention and a proper mechanism for the optimal utilization of the underlying computing resources. Task scheduling in cloud computing environment lies into the category of NP-hard problem and many heuristics and Meta heuristics strategies have been applied to solve the problem.Methods:In this work, Fuzzy Enabled Genetic Algorithm (FEGA) is proposed to solve the problem of task scheduling in cloud computing environment as classical roulette wheel selection method has certain limitations to solve complex optimization problem.Results & Discussion:In this work, an efficient fuzzy enabled genetic algorithm based task scheduling mechanism has been designed, implemented and investigated. The efficiency of the proposed FEGA algorithm is tested using various randomly generated data sets in different situations and compared with the other meta-heuristics.Conclusion:The authors suggest that the proposed Fuzzy Enabled Genetic Algorithm (FEGA) to solve the task scheduling problem helps in minimizing the total execution time or makespan and on comparing with other Meta-heuristic like genetic algorithm and greedy based strategy found that FEGA outperforms the both in different set of experiments.
A Transmission Power Control Mechanism for 802.15.4+RPL-Operated Wireless Sensor Network
Authors: Qolami Ali , Nassiri Mohammad , Abdoli Hatam 
Published: April 2019

Background and Objective:
Wireless Sensor Networks (WSNs) are typically formed by
one or more sink nodes and a large number of sensor nodes that are able to sense, process and transmit
data. Topology control mechanisms can be utilized to guarantee requirements such as connectivity,
coverage, delay and network lifetime in WSNs. One effective way to control the topology is adjusting
transmission power level in each node according to the link quality conditions. The goal of
Transmission Power Control (TPC) is to set the transmission range of each node by adjusting its
transmission power level.

Methods:
In this paper, we investigate TPC in 802.15.4+RPL WSNs. In our proposed mechanism,
each node dynamically adjusts its transmission power based on channel conditions before sending
every data and ACK packet.

Result and Conclusion:
The results of extensive simulations confirm that our power control method
improves network performance, especially in terms of network lifetime, which is an essential issue in
WSNs.
Systematic Review of Local Studies Regarding Efficiency of Add-On Medications on Negative Symptoms of Schizophrenia: A Meta-Analysis
Authors: Shafti Saeed Shoja 
Published: April 2019

Background:
While negative symptoms are connected with poor functioning
and quality of life, pharmacological managements have imperfect effects on deficit syndrome
and may even subsidize or aggravate secondary negative symptoms. Meanwhile,
management of negative symptoms by means of add-on medications has resulted in instable
consequences.

Objective:
In the current tryout, some of the indigenous systematic issued studies have
been the theme of a new meta-analysis, to assess the effectiveness of adjunctive psychotropic
drugs on deficit syndrome of schizophrenia.

Methods:
Twelve randomized placebo-control trials (n=433), which had been implemented
in Razi psychiatric hospital in the last 14 years, had been selected for the present analysis.
As a shared protocol, all cases had been selected amongst the male inpatients, who were
hospitalized in chronic section of the hospice and had been diagnosed schizophrenia in line
with “Diagnostic and Statistical Manual of Mental Disorders, 4th edition, Text Revision”.
In this regard, the aforesaid samples had been entered into matching-group, double-blind
assessments for random assignment to a psychotropic medication (like antidepressant, benzodiazepine,
psycho-stimulant, Acetyl-cholinesterase inhibitors) or placebo in addition to
their current drug. In these trials, “Scale for Assessment of Negative Symptoms (SANS)”
had been used as the main outcome measure for evaluation of negative symptoms. Also,
response was defined as a decrease in >20% in the severity of SANS score (over-all and/or
sub-scales).

Results:
While the heterogeneity of the present meta-analysis was intermediate, the “Combined
Effect Size” of the aforesaid assessments has revealed a significant influence respecting
efficiency of psychotropic drugs on negative symptoms of schizophrenia (OR =
5.40, CI=2.69- 10.85, z= 5.32, p<0.000). Similar results, as well, could be found in connection
with various negative symptoms. In this regard, ‘Anhedonia-Asociality’ showed the
best “Combined Effect Size”, afterwards “Affective Blunting”, “Avolitio -Apathy”, “Attention
Deficit”, and last of all “Alogia”. “Heterogeneity” of all said analysis was insignificant
and therefore appropriate.

Conclusion:
According to the findings, psychotropic drugs, as add-on medications, have
valuable influence in regard to amelioration of negative symptoms of schizophrenia.
The Inverse Edit Term Frequency for Informal Word Conversion Using Soundex for Analysis of Customer’s Reviews
Authors: Arora Monika , Kansal Vineet 
Published: April 2019

Background:
E-commerce/ M-commerce has emerged as a new way of doing businesses
in the present world which requires an understanding of the customer’s needs with the utmost
precision and appropriateness. With the advent of technology, mobile devices have become
vital tools in today’s world. In fact, smart phones have changed the way of communication. The
user can access any information on a single click. Text messages have become the basic channel
of communication for interaction. The use of informal text messages by the customers has created
a challenge for the business segments in terms of creating a gap pertaining to the actual requirement
of the customers due to the inappropriate representation of it's need by using short
message service in an informal manner.

Objective:
The informally written text messages have become a center of attraction for researchers
to analyze and normalize such textual data. In this paper, the SMS data have been analyzed
for information retrieval using Soundex Phonetic algorithm and its variations.

Methods:
Two datasets have been considered, SMS- based FAQ of FIRE 2012 and self-generated survey
dataset have been tested for evaluating the performance of the proposed Soundex Phonetic algorithm.

Results:
It has been observed that by applying Soundex with Inverse Edit Term Frequency, the
lexical similarity between the SMS word and Natural language text has been significantly improved.
The results have been shown to prove the work.

Conclusion:
Soundex with Inverse Edit Term Frequency Distribution algorithm is best suited
among the various variations of Soundex. This algorithm normalizes the informally written text
and gets the exact match from the bag of words.
IMSM: An Interval Migration Based Approach for Skew Mitigation in MapReduce
Authors: Singh Balraj , Verma Harsh K. 
Published: April 2019

Background:
Extreme growth of data necessitates the need for high-performance computing.
MapReduce is among the most sought-after platform for processing large-scale data. Research
work and analysis of the existing system has revealed its performance bottlenecks and areas
of concern. MapReduce has the problem of skew on its processing nodes. This paper proposes an
algorithm for MapReduce to balance the load and eliminate the skew on Map tasks. It reduces the
execution time of job by lowering the completion time of the slowest task.

Methods:
The proposed method performs one-time settlement of load balancing among the Map
tasks by analyzing the expected completion time of the Map tasks and redistributes the load. It uses
intervals to migrate the overloaded or slows tasks and append them on the under loaded tasks.

Results:
Experiments revealed an improvement of up to 1.3x by implementing the proposed strategy.
Comparison of the proposed technique with other relevant strategies exhibits a better distribution
of load among Map tasks and lower level of the skew. Evaluation is done using different
workloads.

Conclusion:
A significant improvement is observed in the performance and reduced completion
time of job.
Organocatalysis: Trends of Drug Synthesis in Medicinal Chemistry
Authors: Sahoo Biswa Mohan , Banik Bimal Krishna 
Published: April 2019

Background:The continuous increase in challenges associated with the effective treatment of life threatening diseases influences the development of drug therapies with suitable physicochemical properties, efficiency and selectivity. So, organocatalysis is a potential synthetic tool which is accelerating the development of new drug molecules.Methods:Organocatalysis reactions can be carried out at lower temperatures and in milder pH conditions as compared to metal based catalysed reactions. Due to ready availability of catalysts, stability, purity, low toxicity and easy in handling of the chemical reactions, it has become an attractive technique to synthesise complex molecules with diverse structures. Here, the impact of various catalysts in organic synthesis with methods is discussed.Results:Organic catalysts are used widely in various chemical reactions such as Michael Addition, aldol reaction, Diels-Alder reactions and Knoevenagal reactions. It was observed that the use of organocatalyst results in the formation of stereo active molecules with diverse biological activities.Conclusion:This review also focuses on the various scopes and limitations of organocatalytic reactions in the production of medicinally useful drug molecules. Organocatalysts possess several advantages over traditional metal catalysts because they are non-toxic, readily available, stable, efficient, and easy to handle which involves environmentally friendly reaction.
Physical and Dielectric Properties of MnFe2O4 Doped by Mo
Authors: Al-Mokdad F. , Hassan R. Sayed , Awad R. 
Published: April 2019

Background:The properties of spinel ferrites are known to be dependent on many various factors and mainly on the cations distribution among the tetrahedral and octahedral sites. Therefore, they are sensitive to the presence of doping cations, the type and the amount of these cations. Many researchers have focused on investigating the effect of doping on spinel ferrites nanoparticles with various types of dopants. Among the dopants, transition metal (TM) ions have shown significant effects and changes on the structural, optical, electric and magnetic properties of spinel ferrites nanoparticles.Objective:The goal of this work is to investigate the effect of the TM ions Mo5+ on the several properties of manganese ferrites nanoparticles.Methods:Mo-doped manganese ferrites nanoparticles with the general formula MnFe2-xMoxO4 (0≤x≤ 0.1) were prepared by co-precipitation technique using two different methods, depending on the molarity of NaOH and the annealing temperatures. The characterization of the prepared samples was conducted by X-ray powder diffraction (XRD), Energy-Dispersive X-ray (EDX), Transmission Electron Microscopy (TEM), ultraviolet-visible (UV-Vis) absorption spectroscopy and Fourier Transform Infrared (FTIR) spectroscopy in order to investigate the effect of Mo-doping on the structure, crystallite size, morphology, energy gap and functional groups of MnFe2O4 nanoparticles. Vibrating sample magnetometer (VSM) was used to study the magnetic hysteresis of the samples.Results:The XRD patterns show the segregation of MnFe2O4 phase into α-Fe2O3 and Mn2O3 for samples prepared at 4 M NaOH and annealing temperature of 873 K. Whereas, samples prepared at 2 M NaOH without annealing process, obtained a single phase of MnFe2O4. The Eg of both samples decreases with the increase in Mo-doping. FTIR confirms the presence of Fe-O bands corresponding to α-Fe2O3 for annealed samples, and the metal-O bands corresponding to octahedral and tetrahedral sites in non-annealed samples. Magnetic measurements show that annealed samples are antiferromagnetic whereas ferromagnetic behavior is observed in non-annealed samples. Dielectric measurements, for both samples, indicate that the dielectric parameters are strongly dependent on both Mo-concentrations and temperatures.Conclusion:In order to get a single phase of MnFe2O4 nanoparticles, thermal treatment at high temperature and high molarity of NaOH are not recommended. Mo-doping has significant influences on the optical, magnetic and dielectric properties and therefore future studies on the Mo-doping with different and new doping percentages are recommended.
Post-Custodial Archiving for the Collective Good
Authors: Alpert-Abrams Hannah , Bliss David A , Carbajal Itza 
Published: April 2019

LLILAS Benson Latin American Studies and Collections at the University of Texas at Austin applies post-custodial archival methods in pursuit of a new vision of digital archival practice and the transnational construction of historical memory. This work seeks to develop a practice for digital archiving that enables the redistribution of resources while centering communities as contributors and owners of their own documentary heritage. Although LLILAS Benson has successfully built partnerships and continues to manage widely recognized collections using a post-custodial model, the anti-colonial framework through which this work has been understood does not fully account for the power imbalances at play. Using Cifor and Lee’s survey of neoliberalism in the archives as a launching point, this article considers how neoliberalism has shaped post-custodial practices at LLILAS Benson, focusing on ideas and practices of labor, digitization, and the common good. Through this analysis, the authors describe not a static set of methodologies, but rather an ongoing process of learning, unlearning, and restructuring in pursuit of a collective good.
Pre-print first published online 03/03/2018
Fen bilgisi öğretmenlerinin fen ve mühendislik uygulamaları hakkında görüşleri
Authors: SARI Uğur , YAZICI Yasin Yaşar 
Published: April 2019

İçinde bulunduğumuz dijital çağda, teknolojide yaşanan baş döndürücü
gelişmeler her alanda olduğu gibi eğitim sistemlerini de etkilemiştir. Bu anlamda gerçekleşen eğitim reformlarının
başında FeTeMM eğitimi gelmektedir. Birçok gelişmiş ülke, eğitim sistemlerinde
bu yaklaşıma yönelik değişimler gerçekleştirmiştir. Ülkemizde de eğitim
politikası anlamında çalışmalar başlamış, 2017 Fen Bilimleri Öğretim Programında
Fen ve Mühendislik Uygulamaları adı altında yer alması planlanmıştır. Bu
kapsamda çalışmanın amacı, Fen ve Mühendislik Uygulamaları hakkında fen bilgisi
öğretmenlerinin görüşlerini belirlemektir. Araştırmanın çalışma grubu Ankara’da
farklı okullarda görev yapan 20 fen bilgisi öğretmeninden oluşmaktadır. Nitel
araştırma olarak dizayn edilen bu çalışmada, veriler yarı yapılandırılmış görüş
formu ile toplanmış, verilerin analizinde ise içerik analizinden
yararlanılmıştır. Öğretmenler, fen ve mühendislik uygulamalarının problem
çözebilen, yaratıcı ve üretken bireylerin yetiştirilmesinde etkili olacağı, disiplinlerarası
yaklaşımın önemli kazanımlar sağlayacağı yönünde olumlu görüşlere sahiptirler. Ancak
bu alanda kendilerini yetersiz görmekte ve eğitime ihtiyaç duymaktadırlar.
Immunoterapia z użyciem przeciwciał monoklonalnych ukierunkowanych na szlak PD-1/PD-L1 w chorobach nowotworowych
Authors: Malesa Aneta , Nowak Justyna , Skórka Katarzyna , Karp Marta , Giannopoulos Krzysztof 
Published: April 2019

StreszczenieKomórki nowotworowe modyfikują aktywność układu odpornościowego, wyciszając jego reakcję na rozwijający się nowotwór. Jednym z głównych szlaków prowadzących do wyciszenia aktywności limfocytów jest szlak PD-1/PD-L1, zatem jest jednym z głównych celów immunoterapii. Blokowanie PD-1 lub PD-L1 przy pomocy przeciwciał monoklonalnych umożliwia przywrócenie aktywności układu odpornościowego i wstrzymanie bądź cofnięcie choroby. W badaniach klinicznych określano skuteczność i bezpieczeństwo terapii przy użyciu przeciwciał anty-PD-1 oraz anty-PD-L1 w nowotworach litych oraz hematologicznych. Obiecujące wyniki badań, w monoterapii lub połączeniu z chemio- lub radioterapią, prowadzą do rejestracji terapii przeciwciał monoklonalnych anty-PD-1 i anty-PD-L1 w coraz większej liczbie chorych onkologicznych.
Nivolumab for relapsed/refractory classical Hodgkin lymphoma after brentuximab vedotin failure – Polish Lymphoma Research Group real-life experience
Authors: Długosz-Danecka Monika , Szymczyk Michał , Fischer Joanna , Łojko-Dankowska Anna , Rybka Justyna , Mańko Joanna , Duda Katarzyna , Jurczak Wojciech 
Published: April 2019

AbstractAimPolish centers analyzed retrospectively the real-life experience with nivolumab in relapsed/refractory (R/R) classical Hodgkin lymphoma (cHL) patients, after brentuximab vedotin (BV ) failure.BackgroundDespite the effective frontline treatment, for cHL patients relapsing after autologous stem cell transplantation, the only effective strategy remains the novel agents. Nivolumab, a checkpoint inhibitor, demonstrates the clinical benefit with an acceptable safety profile.Materials and methodsRetrospective analysis included 16 adult patients with R/R cHL after BV failure. All patients received single-agent nivolumab 3 mg/kg every 2 weeks until disease progression or unacceptable toxicity.ResultsAfter six cycles of nivolumab the overall response rate was 81% (complete remission rate of 56%, partial remission rate of 25%). The median PFS was not reached after a median follow-up of 19 months. Adverse events (AEs) of any grade occurred in 12 patients (75%), including grade 3 AEs observed in 5 patients (31%). There were no AEs of grade 4 or 5. After a median of 25 nivolumab doses, 62% of responding patients proceeded to allogeneic stem cell transplantation.ConclusionNivolumab monotherapy demonstrated a high efficacy and safety in R/R cHL patients after BV failure. More patients and longer follow-up may further establish the potential benefit.
Skuteczne leczenie ibrutynibem chorego na przewlekłą białaczką limfocytową z obecnością delecji 17p – opis przypadku
Authors: Sokołowska Bożena , Szczepanek Ewa Wasik- , Chocholska Sylwia , Hus Marek 
Published: April 2019

StreszczenieW pracy przedstawiono przypadek 62-letniego chorego na PBL z obecnością delecji 17p, u którego zastosowanie immunochemioterapii nie przyniosło oczekiwanego efektu. Dopiero leczenie ibrutynibem doprowadziło do remisji częściowej choroby (zmniejszenia limfadenopatii, normalizacji obrazu morfologii krwi).
Developing Communicative Competence in Students of Higher Medical Schools
Authors: Zhura V. , Rudova J. 
Published: April 2019

AbstractCommunicative competence has been the central point of a great number of English for specific purposes (ESP) studies. However, its relevance to second language acquisition by medical students and attainability are still to be established as the critical evaluation of the present findings may help to create a valuable inventory for practical use in a classroom. The review set out to explore the present-day concept of communicative competence with regard to ESP teaching and ways of its development in students of medical universities. It analyzed the structure of the concept of communicative competence generally viewed as comprising both linguistic and extralinguistic constituents. Special emphasis was placed on the aspect of enhancing competitive competence through students’ involvement in oral communication. One of the most effective ways of developing communication skills in ESP classes in medical schools is exposure to authentic communication using Internet facilities. The videos should be thematically adjusted to the students’ professional needs and correlate with their level of linguistic and professional expertise. This approach helps to accomplish a number of teaching goals such as providing students with the information about the framework of speech events iterative in medical and academic spheres, communication patterns used in them, and raising their professional and socio-cultural awareness. It also aims to develop their ability to perform speech activities within a wide range of professional and academic contexts. The review made it possible to identify efficient reproductive and productive teaching methods to be employed.
Preliminary Reflection on Content and Language Integrated Learning as a Tool for Teaching English in a Globalised World
Authors: O’Connell A. , Chaplier C. 
Published: April 2019

Abstract
CLIL has become synonymous with teaching English to non-specialist students in professional and academic (ex. universities) contexts. However, it should not be seen as a unique approach that could be applied to any situation. The present reflection aims to emphasise the importance of social and educational contexts in the shaping of CLIL as a tool for both research and teaching, as a research question. It proposes a plan for research that needs to be collaborative and comparative in its objectives and methodology (action research), which will be followed by the presentation of the expected outcomes.