bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Novel Triple-Band Dipole Antenna for WLAN/WiMAX/LTE Applications
Authors: Shuai Chen-yang , Wang Guang-ming 
Published: December 2017

Abstract
In this paper, a novel triple-band dipole antenna is presented. The proposed antenna has a very simple structure and is easily designed. The idea of the antenna is based on the traditional wideband bow-tie dipole antenna. Via etching slots on the bow-tie patch, three bent dipoles with different lengths which correspond to different operating frequencies are formed. Hence, the triple-band antenna is generated. Each operating frequency band realizes wideband and can be adjusted almost independently. And the antenna is fed by a 50 Ω microstrip line and a wideband microtrip-to-coplanar-stripline (CPS) transition as a balun. The good performances of the proposed antenna are achieved by a mass of simulations and measurements. The measured results have a good agreement with the simulated ones. The results show that the proposed antenna obtains three bandwidths at 2.38~2.65 GHz (10.7 %), 3.17~4.08 GHz (25.1 %), and 4.75~6.00 GHz (23.2 %) with the reflection coefficient less than −10 dB. In addition, the stable gain and quasi-omnidirectional radiation patterns are obtained in the operating frequency bands. Therefore, the proposed antenna is suitable for WLAN/WiMAX/LTE applications.
Investigation of a L1-optimized choke ring ground plane for a low-cost GPS receiver-system
Authors: Zhang Li , Schwieger Volker 
Published: December 2017

AbstractBesides the geodetic dual-frequency GNSS receivers-systems (receiver and antenna), there are also low-cost single-frequency GPS receiver-systems.The multipath effect is a limiting factor of accuracy for both geodetic dual-frequency and low-cost single-frequency GPS receivers. And the multipath effect is for the short baselines dominating error (typical for the monitoring in Engineering Geodesy). So accuracy and reliability of GPS measurement for monitoring can be improved by reducing the multipath signal.In this paper, the self-constructed L1-optimized choke ring ground plane (CR-GP) is applied to reduce the multipath signal. Its design will be described and its performance will be investigated.The results show that the introduced low-cost single-frequency GPS receiver-system, which contains the Ublox LEA-6T single-frequency GPS receiver and Trimble Bullet III antenna with a self-constructed L1-optimized CR-GP, can reach standard deviations of 3 mm in east, 5 mm in north and 9 mm in height in the test field which has many reflectors. This accuracy is comparable with the geodetic dual-frequency GNSS receiver-system. The improvement of the standard deviation of the measurement using the CR-GP is about 50 % and 35 % compared to the used antenna without shielding and with flat ground plane respectively.
Le phénomène de la souffrance comme élément constitutif de la théophilosophie affirmative de Kierkegaard
Authors: Słowikowski Andrzej 
Published: December 2017

AbstractThis paper analyzes the problem of suffering in Kierkegaard’s thought on the basis of two main parts of his work: pseudonymous writings and upbuilding discourses. The main assumption is that Kierkegaard presents the problem of suffering differently in these two parts: in the pseudonymous writings from the viewpoint of the negative dialectic of paradox, and in the upbuilding discourses in terms of the positive dialectic of upbuilding. Therefore, the problem of suffering is examined separately in both these parts: in the pseudonymous writings as the phenomenology of suffering and in the upbuilding discourses as the hermeneutics of suffering. The most important conclusion is that the experience of suffering in Christianity has a completely positive dimension, because it is radically opposed to the experience of evil. The Christian suffering is in this approach, according to the pattern of Jesus Christ, an effect of the spiritual development of a human being in God and a place of God’s revelation in human existence. This understanding of Christian suffering leads to the discovery of a perspective of affirmative theophilosophy as an original interpretation of the Christian ideal presented by Kierkegaard.
On the Origins of Kierkegaard’s Climacus Writings and Paradox Christology
Authors: Schreiber Gerhard 
Published: December 2017

AbstractBy the spring of 1843, Kierkegaard’s Christology had changed fundamentally: he now attributed paradoxicality to the person of Jesus Christ. This essay presents a critical reconsideration of two of the most influential attempts within Kierkegaard research-those of Hayo Gerdes and Hermann Fischer-to explain the roots and background of Kierkegaard’s paradox Christology. Against these views, this essay will argue that the project undertaken in Kierkegaard’s Climacus writings had a different starting-point, namely, his reading of David Friedrich Strauss’ Christian Doctrine [Glaubenslehre].
Digitally Controlled AC Current Measurement and Protection Techniques
Authors: Turos László-Zsolt , Csernáth Géza , Hegyi István 
Published: December 2017

Abstract
This paper describes a cost effective AC current measurement method that avoids complex AC to DC current measurements by converting an amplified and rectified AC voltage drop across a shunt resistor to a duty cycle of a PWM signal. The current measurement chain output is fed into a microcontroller unit (MCU) and into a short circuit protection block that inhibits AC load drivers in case of overcurrent or short circuit events, overriding the state set by the MCU control algorithm. The authors present a mathematical model, simulations and a practical evaluation of custom-developed circuits that are capable to reach a convincing level of measurement precision. By counting a given number of consecutive AC periods, the effect of inrush current generated by inductive AC loads is filtered. The proposed solution allows inrush currents up to 3A, fitting the consumption range of AC control elements met in household application circuits, such as relays or solenoid valves.
FPGA based angular stabilization of a quadcopter
Authors: Hajdu Szabolcs , Brassai Sándor Tihamér , Szekely Iuliu 
Published: December 2017

Abstract
This paper presents an FPGA based method for stabilization of a quadcopter around the principal axes pitch, roll, and yaw using IMU sensors for angular estimation and the PID algorithm for control. The goal was to solve the problem in hardware level providing a fast method for stabilization. Using an FPGA circuit parallel with a microprocessor the control of the quadcopter becomes simpler the microprocessor can handle other tasks like area mapping or path calculation parallel with the stabilization hardware implemented on the FPGA. Sensor configuration and calibration was implemented on the FPGA along with the PID controller. The implemented circuit was tested in real time on the quadcopter.
A note on field-valued measures
Authors: Simone Anna De , Hroch Michal , Pták Pavel 
Published: December 2017

Abstract
We consider the Horn-Tarski condition for the extension of (signed) measures (resp., non-negative measures) in the setup of field-valued assignments. For a finite collection 𝓒 of subsets of Ω, we find that the extension from 𝓒 over the collection exp Ω of all subsets of Ω is implied by, and indeed equivalent to, a certain type of Frobenius theorem (resp. a certain type of Farkas lemma). This links classical notions of linear algebra with a generalized version of Horn-Tarski condition on extensions of measures. We also observe that for a general (infinite) 𝓒 the Horn-Tarski condition guarantees the extension of signed measures (here the standard Zorn lemma applies). However, we find out that the extensions for non-negative ordered-field-valued measures are generally not available.
Porous subsets in the space of functions having the Baire property
Authors: Ivanova Gertruda , Wagner-Bojakowska Elżbieta 
Published: December 2017

Abstract
The comparison of some subfamilies of the family of functions on the real line having the Baire property in porosity terms is given. We prove that the family of all quasi-continuous functions is strongly porous set in the family of all cliquish functions and that the family of all cliquish functions is strongly porous set in the family of all functions having the Baire property.
We prove also that the family of all Świątkowski functions is lower 2/3-porous set in the family of cliquish functions and the family of functions having the internally Świątkowski property is lower 2/3-porous set in the family of cliquish functions.
A generalization of the exponential sampling series and its approximation properties
Authors: Bardaro Carlo , Faina Loris , Mantellini Ilaria 
Published: December 2017

Abstract
Here we introduce a generalization of the exponential sampling series of optical physics and establish pointwise and uniform convergence theorem, also in a quantitative form. Moreover we compare the error of approximation for Mellin band-limited functions using both classical and generalized exponential sampling series.
Rate of convergence of empirical measures for exchangeable sequences
Authors: Berti Patrizia , Pratelli Luca , Rigo Pietro 
Published: December 2017

Abstract
Let S be a finite set, (Xn
) an exchangeable sequence of S-valued random variables, and μn
= (1/n)

∑

i
=
1

n

$\sum\limits_{i=1}^{n} $

δ

Xi

the empirical measure. Then, μn
(B)

⟶

a
.
s
.

$\overset{a.s.}{\longrightarrow} $

μ(B) for all B ⊂ S and some (essentially unique) random probability measure μ. Denote by 𝓛(Z) the probability distribution of any random variable Z. Under some assumptions on 𝓛(μ), it is shown that

a
n

≤
ρ

[

L

(

μ
n

)
,

L

(
μ
)

]

≤

b
n

and

ρ

[

L

(

μ
n

)
,

L

(

a
n

)

]

≤

c

n
u

$$\begin{array}{}
\displaystyle \frac{a}{n}\le\rho\bigl[\mathcal{L}(\mu_n), \mathcal{L}(\mu)\bigr]\le\frac{b}{n}\qquad\text{and}\qquad\rho\bigl[\mathcal{L}(\mu_n), \mathcal{L}(a_n)\bigr]\le\frac{c}{n^u}
\end{array} $$

where ρ is the bounded Lipschitz metric and an
(⋅) = P(X

n+1 ∈ ⋅ | X
1, …, Xn
) is the predictive measure. The constants a, b, c > 0 and u ∈ (

1
2

$\frac{1}{2} $

, 1] depend on 𝓛(μ) and card (S) only.
Pecularities of Gas Analysis in Al and Mg Powders
Authors: Oslanec P. , Škrobian M. 
Published: December 2017

Abstract
A new inert gas fusion method has been developed for determining oxygen and nitrogen in Al and Mg powders. The approach, the methods and some results are discussed. Dissociation of AlSi10Mg powder, 99.9 % Mg powder, Mg alloy powder and MgO p.a. are presented.
Present consequences of the post-war migration in the Czech borderland for regional development
Authors: Vaishar Antonín , Dvořák Petr , Nosková Helena , Zapletalová Jana 
Published: December 2017

Abstract
Czechia lost more than 3,000,000 inhabitants as a result of the WW II. Germans displaced from the borderland formed the largest part. The newcomers after 1945 were of a different character – without any relation to their new settlements. This population formed a special social milieu familiar with the socialist way of thinking and that of a suppressed middle class. The consequences of it are seen in demographic, economic, environmental and social areas. After 1989, the factories in the borderland were mostly closed down, armies left the territory, people were not prepared to start their own businesses. Large-scale landscape protection formed a new barrier. Tourism is not able to substitute for the decrease in employment. The hope in cross-border collaboration has been overestimated.
Monitoring of colonies and provisioning of rooks with nest material as a potential tool for stabilizing colonies and increasing nesting opportunities in the countryside. Project report
Authors: Slobodník Roman , Tulis Filip , Chavko Jozef , Lengyel Jozef 
Published: December 2017

Abstract
The rook is a species inhabiting open agricultural landscape whose non-active nests are also used by other bird species for nesting. It is the decline in rook colonies that has been posited as one of the reasons for decrease in the red-footed falcon (Falco vespertinus) population in Slovakia since the 1970s. During the period from 2012 till 2016, four monitorings of rook colonies were carried out in south-western Slovakia (Diakovce, Nitrianska Osada, Sokolce and Tvrdošovce). In the colony at Tvrdošovce, supporting activity involving provisioning of rooks with nest material was under way from 2014 until 2016. While the colonies at Diakovce and Nitrianska Osada have been showing a slight decrease in the number of nesting rooks, despite larger interannual differences the colony at Sokolce has been showing an upward trend. The size of the colony at Tvrdošovce has been stable since the beginning of the supporting activity. This activity had a statistically significant positive effect on the width of rook nests. In 74 cases in the studied rook colonies we have recorded nesting by three other bird species – Eurasian kestrel (Falco tinnunculus) 43.8%, western jackdaw (Corvus monedula) 39.7% and long-eared owl (Asio otus) 16.4%. In 2015 two female redfooted falcons were observed in the colony at Tvrdošovce.
Agricultural utilisation and potential suitability of the Sysľovské polia Special Protection Area (south-western Slovakia) landscape in relation to the habitat requirements of the red-footed falcon (Falco vespertinus)
Authors: Zemko Martin , Petluš Peter , Petlušová Viera 
Published: December 2017

Abstract
Intensification of land use in an agricultural landscape significantly affects biodiversity also in protected areas. This can be observed in the Sysľovské polia Special Protection Area in relation to the occurrence of the red-footed falcon (Falco vespertinus). The objective of this study was to evaluate the landscape structure and suitability of agrotechnical procedures for the habitat demands of this species in the course of the period from 2004 until 2017. The utilisation was assessed on the basis of four landscape elements representation in 1949 and 2017. The next step was analysis of landscape patches. The aim was to quantify the diversity and the spatial structure of the landscape mosaic using Shannon’s Diversity Index and Evenness Index as well as Simpson’s Diversity Index and Evenness Index and spatial pattern analysis in the Fragstats software programme. Assessment of crop suitability was carried out according to the following criteria: representation of positive/negative agricultural crops, diversity of crops in crop rotation, and (non-)observance of crop rotation. It was found that the agricultural landscape use did not change significantly. The study area has been used as an intensively-farmed agricultural landscape for a long time. The landscape elements have remained almost identical, with dominance of arable land. Differences emerged in the analysis of the micropatches, which are represented by natural hedgerows consisting of various species of trees, shrubs and grasses. The results show a decrease in the diversity of patches and changes in the structure of the landscape patches, which may be important in terms of the preservation of the habitat of fauna which form an important part of the F vespertinus diet. On the basis of the evaluation of the suitability of agricultural crop growing, we found that there were some areas showing negative values in all the criteria, and thus they require changes in the crop rotation focusing on increasing positive crop diversity and the share of grassland.
On Seduction in Theatre Performance or the (Im)Possibility of a Demythisation
Authors: Piroşcă Alin-Daniel 
Published: December 2017

Abstract
Seduction doesn’t really refer to love. In fact, it isn’t at all directly related to love, but as the word’s etymology suggests, it is an intellectual act that means “to lead on a different path”, “to corrupt”. Starting from this point and considering it in regard to the theatre performance and audience, our main purpose in this paper is to identify the elements involved in the process of seduction that takes place in the performance space, but also the role of each one of these elements. We will make a series of approaches on a theoretical level, involving some exercises in semiotics, in an attempt to reformulate the relation between the performance and the audience. This paper asserts that the performance is acting the part of the seducer and the audience is the one being seduced, but also that there is a secret involved in this relation, enlarging the aesthetical notions related to the theatre performance, through the relevant functions of desire and intimacy.
Time’s Tricephalous Image in Macbeth by William Shakespeare
Authors: Conţiu Lia Codrina 
Published: December 2017

Abstract
Influenced by the Humanist movement, Shakespeare is preoccupied with time, illustrating it in his lyrics and dramaturgy. If in comedies time has a regenerative character, in the Shakespearean tragedies “the clock” ticks continuously, it is the soundtrack that fulfills the destiny of the character. And Macbeth is perhaps the best example in this respect. Macbeth is hypnotized and haunted by time. Hypnotized by the imagination of a possible future and haunted by a past full of blood and crimes. The hero lives between imagination and memory, and the main catalyst of the play is the tragic interaction between Macbeth and time, with all the psychological and physical tensions that derive from there. The main impact of time on Shakespeare’s tragic heroes is achieved by the actual actions of time that exposes and amplifies tragic defects of heroes (in Macbeth’s case - ambition). As in the Renaissance, myths, images and signs were used in poetics and literature to indicate a teaching, a moral, Shakespeare includes in his work symbols taken from the iconography and mythography available at that time, such as time’s tricephalous image around which Macbeth is “shaped”.
Artistic Forms of Speech in a One-Person Show
Authors: Scutariu Irina 
Published: December 2017

Abstract
This one-man show type of performance is a theatrical project in which the actor Alexandru Dobinciuc, a final year master’s student at the George Enescu University of Arts, Department of Theatre was involved. We aim to describe both the specific evolution of a character in a one-person show, and the strategies and technical means used in this type of show, such as scenography, costumes, music and video projections. The latter element is what makes this show exciting; from a purely technical standpoint, the show has the benefit of being easy to relocate. Nowadays, actors need these means of practicing artistic skills: any actor should include in his repertoire this type of show to be able to demonstrate his artistic talents. We use the metaphor of Dialogue of the arts in contemporary theatre to support faculties in the field of arts and young actors who are no longer eligible for indefinite employment contracts, even if they play in an institution-based cultural environment. (The highly debated issue of vacancies in theatres is not part of our discussion.) It is worth mentioning that the actor with whom I have worked on this project is one of the few graduates who were hired by a theatre institution. He is employed by the Mihai Eminescu Theatre in Botoşani.
The role of autologous conchal cartilage in ossiculoplasty during canal wall down mastoidectomy
Authors: Jalisatgi Roshan , Garag Santosh S. , J. S. Arunkumar 
Published: December 2017

<p class="abstract"><strong>Background:</strong> This study was done to evaluate the hearing outcome in patients undergoing ossiculoplasty using autograft cartilage in canal wall down surgery for cholesteatoma.</p><p class="abstract"><strong>Methods:</strong> This is a retrospective study. This was conducted in a tertiary care hospital from January 2011 to January 2014. This study included 54 patients who underwent canal wall down mastoidectomy with tympanoplasty during this period. </p><p class="abstract"><strong>Results:</strong> Preoperative and postoperative ABG for short columella were 23.13 dB (±11.21) and 12.66 dB (±8.92) respectively. Preoperative and post-operative ABG for long columella were 36.96 dB (±6.73) and 24.77 dB (±10.36) respectively. This is statistically significant.</p><p><strong>Conclusions:</strong> The use of autologous cartilage in ossiculoplasty during canal wall down mastoidectomy gives excellent hearing gain. It is also a cheaper option which is financially feasible in developing countries.</p>
A comparative study on the nasal endoscopic findings in patients with chronic otitis media
Authors: Thomas Anie Melootu , Menon Arjun Gopinatha , Pradeep Pooja , Vinayakumar Arayamparambil Rajagopalan 
Published: December 2017

<p class="abstract"><strong>Background:</strong> Nasal and/or sinus disease may well contribute to the development of middle ear disease. In this study, the nasal endoscopic findings in patients with chronic otitis media (COM) compared with a group of people who do not have any otologic relevant disease to evaluate the association of anatomical variations with COM.</p><p class="abstract"><strong>Methods:</strong> A descriptive comparative study was done. A detailed history, clinical examination and diagnostic nasal endoscopy (DNE) had been done. DNE analysis include eustachian tube blockage, adenoid hypertrophy and inferior turbinate hypertrophy. The results were statistically analysed. </p><p class="abstract"><strong>Results:</strong> Total 108 cases (45 males and 63 females of age 31.17±14.50 years) and in the control group (48 males and 60 females of average age was 36.06±14.32 years) were included in the study. Most of the COM patients (66.7%) had multiple abnormalities of sinonasal regions compared to controls. Findings of DNE like eustachian tube blockage (p value=0.003), adenoid hypertrophy (p value=0.028) and inferior turbinate hypertrophy (p value=0.035) were significantly associated with chronic otitis media.</p><p><strong>Conclusions:</strong> Nasopharyngeal pathology causing eustachian tube dysfunction, has higher prevalence among chronic otitis media patients. So early recognition by diagnostic nasal endoscopy is warranted especially when surgery is considered for the comprehensive management of this overwhelming and enigmatic disease.</p>
Base of tongue schwannoma on a 22 year old lady: a rare case
Authors: Indrasari Sagung Rai , Fedriani Jessica 
Published: December 2017

Schwannomas are benign tumours arising from the Schwann cells. Around 25-45% schwannomas have been reported occured in head and neck region, but only 1% located intraoral. We report a case of 22 year old woman who presented with foreign body sensation in throat, dysphagia, change of voice, and snoring. There was a slowly growing, solitary, encapsulated, painless, mass on the tongue base. Microscopically, it had the typical features of schwannoma, the diagnosis being supported by a strong positivity for S-100 protein. Ki67 staining showed low proliferative index (&lt;5%) indicated benign schwannoma. CT-scan of oropharynx demonstrated a well-circumscribed soft tissue density mass, oval shape, connected with the left portion base of tongue, homogenous, and strong enhancement mass. The entire mass was removed in general anesthesia with conservative surgical excision via trans-oral route, histopathologic reported consistent as schwannoma. The patient remained disease-free, without any residual problems. Although the rarity of schwannoma on the tongue base, this case highlights the importance of including it in the differential diagnosis of mass from the tongue base. To the best of our knowledge, our case is only the twentieth of schwannoma at the base of tongue that reported in the literature. <p> </p>