bluuebunny/crossref_metadata_2025_split huggingface dataset:
Furadékminták gáz és illékony komponenseinek vizsgálatához szükséges minta-előkészítési és -feltárási protokoll fejlesztésének eredményei
Authors: Körmös Sándor , Czirbus Nóra , Schubert Félix 
Published: December 2017

A mélyfúrásokból származó fúrómagok, furadékminták anyagában csapdázódott fluidumzárványok gáz és illékony komponens tartalmának vizsgálatával lehetőség nyílik a kőzettestben egykor működött fluidumrendszerek kémiai összetételének megismerésére, azok vertikális kiterjedésének meghatározására, a paleo-fázishatárok lehatárolására. A kiválasztott fúrásszelvény mentén, a kőzetmintákból kiszabadított gázok relatív mennyiségét a mélység függvényében ábrázolva, gázprofilok, illetve ezekből további származtatott paraméterek számíthatók. A Szegedi Tudományegyetem, Ásványtani, Geokémiai és Kőzettani Tanszékén megépített gázanalizátorral a fluidumzárványok mechanikai feltárása („feltörése”) alacsony nyomású-magas hőmérsékletű körülmények között történik. Az így felszabadított gázok azonosítását a törőkamrákhoz csatlakoztatott kvadrupól tömegspektrométerrel végezzük.
A furadékminták vizsgálatának elengedhetetlen feltétele a minták megfelelő előtisztítása, majd a fluidumzárványok hatékony és reprodukálható feltárása, azaz a minta törése. Az optimális mérési protokoll kialakítása céljából, az adatok reprodukálhatósága és megbízhatósága érdekében a műszer törőegységeivel 250–500 μm mérettartományba eső kvarchomok minták töréstesztjeit, és eltérő típusú fúróiszapokkal szennyezett kvarchomok minták tisztítási eljárásait vizsgáltuk meg. A töréstesztek eredményei alapján a nagyobb mintamennyiség, a magasabb ütésszám vagy a megnövelt préselési idő eltérő mértékben módosítja az aprózódás hatékonyságát. Vizsgálataink alapján az optimális aprózódás, azaz a legnagyobb számú fluidumzárvány felnyitásához maximálisan 0,5–1,0 g mintamennyiség, minimum 50 db ütésszám és 1 sec ütésenkénti préselési idő szükséges.
A tisztítási eljárások hatékonyságának összehasonlítása során beigazolódott, hogy a megvizsgált tisztítási módszerek esetében, a minták mosószeres tisztítása a minta-előkészítés időtartamát jelentősen megnöveli, de bizonyos minták esetében a mosás alkalmazása elkerülhetetlen a megbízható mérési eredmény elérése érdekében. Az elvégzett tesztek eredményei alapján kidolgoztuk a műszer kőzet- és furadékminták vizsgálatára alkalmazható mérési protokollját, továbbá meghatároztuk a további fejlesztési irányokat.
Inverse square law for light and radiation: A unifying educational approach
Authors: Voudoukis Nikolaos , Oikonomidis Sarantos 
Published: December 2017

Many concepts in the physics curricula can be explained by the inverse square law. Point-like sources of gravitational forces, electric fields, light, sound and radiation obey the inverse square law. This geometrical law gives the ability of unifying educational approach of various cognitive subjects in all the educational levels. During the last years we have been using engaging hands-on activities to help our students in order to understand the cohesion in Nature and to export conclusions from experimental data. The development of critical thinking is also stimulated by student‘s experimental activities. Teaching students to think critically is perhaps the most important and difficult thing we do as science teachers. In this paper three activities are described, which were executed by students. These activities are concerning the electromagnetic radiation and the main goal is to confirm the inverse square law. We used three activities entitled as: “Inverse square law-Light”, “Photometer construction” and “Radioactive source”.The significant motive for this work constituted the following question: “Is it possible to find lab activities which bring out unification and a non-piecemeal description of physical phenomena, helping students to think critically?”.
Determination of Shear Strength Parameters of Rock Mass using Back Analysis Methods and Comparison of Results with Empirical Methods
Authors: Bakhtiyari Ehsan , Almasi Ali , Cheshomi Akbar , Hassanpour Jafar 
Published: December 2017

In this study, using the collected data from 4 slope failures in one of the central mines of Iran, the shear strength parameters of jointed and crushed rock masses using back analysis method are calculated and its results are compared with the values obtained from the empirical methods. In this regard, firstly, the identification of failures is investigated and then geometrical and geological engineering parameters of slopes are collected and recorded by field survey. At this stage, using the Hoek-Brown criterion, shear strength parameters of the rock mass are estimated. Then, using appropriate software for slope stability analysis (limit equilibrium method software: SLIDE and numerical method software: FLAC), and assuming that safety factor is one, the shear strength parameters for sliding surfaces are determined. Finally, the results obtained from this analysis are compared with the results of the empirical methods and then suggestions are made to modify the input data of empirical method
Assessment of the Mechanical Properties of Some Selected Sandcrete Hollow Blocks in Kogi State
Authors: Quadri Ajibola Ibrahim , Ijesoh Lawrence Irobekhian 
Published: December 2017

The current wave of the collapse of building structure all over Nigeria necessitates the need to carry out research on the mechanical properties of sandcrete hollow blocks. This study looks into the quality of blocks produced by block industries in Kogi state, Nigeria to ascertain its water absorption ratio, compressive strength and sieve analysis. In order to clarify these problems, the study is directed towards testing the strength properties of commercially produced sandcrete blocks; to verify whether the sandcrete block can be improved to achieve good quality in the building industries. A Total of five block industries were visited and twenty samples were picked at random from each of the selected block industry and also, soil samples obtained for soil tests in the laboratory. The analysis of results obtained was compared with the Nigerian Industrial Standard (NIS). The average water absorption rate of the sandcrete blocks for block industry D was found to be 12.5% higher than the 12% maximum requirement of the [9]. The average compressive strength values of the sandcrete blocks range between 0.64N/mm2 and 0.87N/mm2 which when compared with standard, was found to be below the minimum requirement of the [9]. Inadequate mix ratio was observed to be one of the factors of poor quality sandcrete block production in this area. The study recommends compliance monitoring by the various regulatory body to ensure good quality of sandcrete block production.
ANOMALI SINYAL SEBELUM GEMPABUMI SIGNIFIKAN DI INDONESIA YANG TERDETEKSI OLEH SUPERCONDUCTING GRAVIMETER
Authors: Priyambada Fajar Rachmadi , Yusuf Mahmud , Variandy Ervan Dany 
Published: December 2017

<p class="judulabstrakindo">ABSTRAK</p><p class="abstrakindo">Indonesia merupakan salah satu negara yang memiliki aktivitas kegempaan yang cukup tinggi. Pada studi ini dilakukan penelitian tentang perubahan nilai <em>gravity</em> selama gempabumi terjadi dengan menggunakan <em>Superconducting Gravimeter (SG)</em> yang terpasang di Badan Informasi Geospasial (BIG). Tujuan penelitian ini adalah untuk mencari anomali yang terekam oleh SG sesaat sebelum gempabumi tersebut terjadi. Metode yang digunakan adalah analisis spektogram dari data SG selama tahun 2011 didapatkan 17 gempabumi signifikan yang mempunyai Mw <span style="text-decoration: underline;">&gt;</span> 6. Hasil penelitian menunjukkan anomali sinyal beberapa jam sebelum kejadian gempabumi terjadi. Anomali tersebut terdapat pada frekuensi 0.03 Hz hingga 0.20 Hz, frekuensi ini berkorelasi dengan akumulasi stress dari nukleasi gempa utama. Dari penelitian ini disimpulkan bahwa SG mampu merekam sinyal gempabumi dengan cukup baik. Tingkat sensitifitas dan kestabilan SG yang sangat baik, dapat dimanfaatkan sebagai pendukung dalam memonitor adanya gempabumi, dan prekursor gempabumi.</p><p class="katakunci"> </p><p class="judulabstraking">ABSTRACT</p><p><em>Indonesia is one of the most country which had high level of seismic activities. In this study we had research about gravity change’s value during earthquakes by using Superconducting Gravimeter (SG) which installed on Badan Informasi Geospasial, Cibinong. </em><em>Superconducting Gravimeter is the most sensitive instrument to measure gravity change’s continuously in low frequencies. </em><em>This research purposed to found anomaly that recorded by SG before an earthquake happened. During 2011, we found significantly earthquakes with Mw <span style="text-decoration: underline;">&gt;</span> 6. Using spectrogram analysis, we got signal anomaly few hours before earthquake happened. Frequencies of anomaly are between 0.03 Hz up to 0.20 Hz, t</em><em>his frequencies are correlated with stress accumulation of nucleation mainshock.</em><em> </em><em>We concluded Superconducting Gravimeter can be use for supporting research about earthquake early warning system.</em><em> Sensitivity and stability are so good and can be able to support monitoring earthquakes, and earthquake’s precursor.</em></p><p> </p>
PENGGUNAAN KINEMATIK GNSS PRECISE POINT POSITIONING (PPP) PADA SURVEI GAYABERAT AIRBORNE SULAWESI
Authors: Hartanto Prayudha 
Published: December 2017

<p class="judulabstrakindo"> ABSTRAK</p><p class="abstrakindo">Metode <em>Precise Point Positionin</em>g (PPP) adalah metode penentuan posisi teliti yang hanya menggunakan sebuah receiver GNSS dual frekuensi. Metode ini dapat digunakan untuk menentukan posisi teliti objek-objek yang diam (<em>static</em>) maupun bergerak (<em>kinematic</em>). Pada penelitian ini, akan dipaparkan mengenai penggunaan kinematik PPP dalam penentuan posisi pesawat terbang pada survei gayaberat <em>airborne</em> di Sulawesi tahun 2008. Data yang digunakan adalah jalur terbang pesawat pada <em>day of year</em> (DOY) 291 dan 274. Perangkat lunak yang digunakan adalah Waypoint<sup>®</sup> Grafnav. Hasil pengolahan menggunakan metode PPP tersebut kemudian dibandingkan dengan hasil pengolahan data Diferensial GPS (DGPS) dengan 1 titik ikat untuk DOY 291 dan 2 titik ikat untuk DOY 274. Hasil perbandingan pada DOY 291 menunjukkan nilai RMS untuk arah timur, utara dan tinggi masing-masing sebesar 0,024 m; 0,020 m dan 0,039 m. Pada DOY 274, RMS yang diperoleh adalah 0,032 m; 0,011 m dan 0,058 m masing-masing untuk arah timur, utara dan tinggi. Hasil-hasil tersebut mengindikasikan bahwa metode PPP dapat digunakan untuk menentukan posisi pesawat terbang dengan fraksi ketelitian sentimeter. Tingkat ketelitian posisi ini sudah memenuhi syarat untuk digunakan pada survei gayaberat <em>airborne</em>.</p><p class="katakunci"><strong>Kata kunci</strong>: GNSS, kinematik PPP, gayaberat airborne, DGPS</p><p class="katakunci"> </p><p class="abstrak"> ABSTRACT</p><p class="abstraking">The Precise Point Positioning (PPP) is a positioning method which only use a dual frequency GNSS receiver. This method can be used to determine the precise position of either static (static) or moving objects (kinematic). In this paper, we will discuss the application of kinematic PPP for the 2008 Sulawesi airborne gravity survey. By using a commercial GNSS processing software called Waypoint® Grafnav, we determine the PPP solutions for the aircraft trajectory of the day of year (DOY) 291 and 274. Each solution then be compared to the Differential GPS (DGPS) results, which use one base station for DOY 291 and two reference stations for DOY 274. The PPP solution of DOY 291 gives RMS error of 0.024 m eastward, 0.020 m northward, and 0.039 m upward. Moreover, the comparison of DOY 274 gives RMS error of 0.032 m eastward, 0.011 m northward, and 0.058 m upward. These centimeter level RMS errors show that PPP is a compatible positioning method for airborne gravity survey.</p><p class="katakunci"><strong><em>Keywords</em></strong><em>: GNSS, </em><em>k</em><em>inematic PPP, airborne gravity, DGPS</em><em></em></p>
Principal component analysis implementation for brainwave signal reduction based on cognitive activity
Authors: Azhari Ahmad , Mardhia Murein Miksa 
Published: December 2017

Human has the ability to think that comes from the brain. Electrical signals generated by brain and represented in wave form. To record and measure the activity of brainwaves in the form of electrical potential required electroencephalogram (EEG). In this study a cognitive task is applied to trigger a specific human brain response arising from the cognitive aspect. Stimulation is given by using nine types of cognitive tasks including breath, color, face, finger, math, object, password thinking, singing, and sports. Principal component analysis (PCA) is implemented as a first step to reduce data and to get the main component of feature extraction results obtained from EEG acquisition. The results show that PCA succeeded reducing 108 existing datasets to 2 prominent factors with a cumulative rate of 65.7%. Factor 1 (F1) includes mean, standard deviation, and entropy, while factor 2 (F2) includes skewness and kurtosis.
« Ein Gastling im Fremdenzimmer ». Zum Werk von José F.A. Oliver
Authors: de la Torre María Eugenia 
Published: December 2017

Depuis ses débuts voici trente ans, José F.A. Oliver (né en 1961) a publié de nombreux volumes de poésie et trois CD de poèmes lus ou chantés ainsi que deux recueils d’essais. Il y réfléchit aux relations entre les langues allemande et espagnole, à l’identité, et met en regard Forêt Noire et Andalousie. Pour José F.A. Oliver, sa relation à l’allemand et à l’espagnol représente « deux conditions distinctes, deux sentiments et deux pensées différents, elle pourrait être comparée à cette question : qui aimez-vous le plus, votre mère ou votre père ? » L’article analyse ses essais contenus dans les recueils Fremdenzimmer (2015) et Wenn ich einst tot… 1. Entwurf. 1. Tristolog (2016) sous l’angle du langage, de la tradition et des espaces culturels comme éléments constitutifs de l’identité.
Borderscapes – Grenz-Erfahrungen und Grenz-Werte in Emine Sevgi Özdamars Prosa
Authors: Geiser Myriam 
Published: December 2017

Lors de la remise d’un prix littéraire à Emine Sevgi Özdamar, la critique Sigrid Löffler souligne dans son discours d’hommage que « [l]a première chose dont l’être humain prend conscience dans sa vie, c’est l’existence de frontières. Et la première chose que l’homme apprend, c’est que toute frontière peut être franchie. La vie entière est constituée de transgressions, et de nouveaux tracés de frontières. » C’est ainsi que, selon Löffler, les frontières deviennent des « zones de présence d’esprit augmentée, et de perception affinée ». Les protagonistes-narratrices des romans d’Özdamar semblent disposer de compétences spécifiques pour ce type de zones. Elles sont expertes en expériences-limites de tout genre, elles les expriment et les transmettent. Actuellement, c’est le concept de borderscapes , issu de recherches en sciences humaines et sociales, qui permet de saisir la construction culturelle et l’aspect dynamique des frontières. Özdamar insiste justement sur ce caractère arbitraire et fabriqué. Cette étude se propose de sonder les « paysages-frontières », géographiques et idéels, auxquels le lecteur est confronté dans ses romans.
Adjusting Challenge–Skill Balance to Improve Quality of Life in Older Adults: A Randomized Controlled Trial
Authors: Yoshida Ippei , Hirao Kazuki , Nonaka Tetsushi 
Published: December 2017

Abstract
OBJECTIVE. We sought to investigate whether occupational therapy that includes adjusting the challenge–skill balance improves health-related quality of life (HRQOL) for older adults in comparison with standard occupational therapy.
METHOD. In this single-blind, randomized controlled trial, 56 older adults were assigned to two groups that received 10 sessions of occupational therapy with and without adjustment of challenge–skill balance. The primary outcome was change in HRQOL after 10 sessions of occupational therapy.
RESULTS. Significant differences were observed in HRQOL using the EuroQol–5 Dimension score (p = .022, d = 0.76) and the eight-item Short-Form Health Survey scores for general health (p = .001, d = 0.99) and in flow experience using the Flow State Scale for Occupational Tasks (p = .008, d = 0.82).
CONCLUSION. Assessment and adjustment of the challenge–skill balance of activities may effectively improve older adults’ HRQOL.
Introduction to the Evaluation in Ayres Sensory Integration® (EASI)
Authors: Mailloux Zoe , Parham L. Diane , Roley Susanne Smith , Ruzzano Laura , Schaaf Roseann C. 
Published: December 2017

Abstract
Comprehensive, reliable, and valid assessment is essential for individually tailored, appropriate, and effective intervention planning and implementation. Research, education, and practice using an Ayres Sensory Integration® (ASI) approach have a long history of prioritizing comprehensive assessment. To meet the need for a set of tests that will fully evaluate the constructs of ASI with psychometrically strong, internationally appropriate, and easily accessible measurement tools, the development of the Evaluation in Ayres Sensory Integration® (EASI) has been initiated. This article introduces the EASI, describes the overarching plan for its development, and reports the results of promising preliminary analyses of discriminative validity data.
University praxis. On exchange between professional and academic practices in architectural education
Authors: Southcombe Mark , Charleson Andrew 
Published: December 2017

<p>This paper records and reflects on two architecture design studios situated between academic and professional practice contexts. It is motivated by the level of both student and external engagement generated by the studios, which occurred at a significantly higher level than that generated by similar studios that regularly run at VUW School of Architecture and other schools of architecture. The objective is to retrospectively understand the unique or special aspects of these studios for future reference. <br />As a working method, the Cuba Street studios are first described in terms of the motivation, the context, the community engagement set up, their brief and their modus operandi. Outcomes of the studios are then evaluated through our observations and critical reflection on the ways engagement between University and professional practices occurred, and how these interactions affected the student learning and external engagement. Reference is made to the relevant literature, the critical intents of the studios, the immediacy of both the proximity and the seriousness of the motivating problem, the inputs of external bodies, and the detail of the student outcomes in terms of both expectations, and the nature of the outcomes. <br />The paper argues that clarity about characteristics, strengths and weaknesses of academic practices, can augment the potential effectiveness of future architecture design teaching associated with professional engagement, and that the collective framing of student research-led design can deliver research outcomes with a significance greater than the sum of their parts.</p>
Re-solved. Iterating design solutions by understanding failure
Authors: McPherson Peter , Pretty Annabel C. 
Published: December 2017

<p>Design is considered one of the most important parts of an architectural education. Much emphasis is placed upon the Design Studio within a School of Architecture, yet in the traditional tutor/student model how much opportunity is there for the student to understand the process of designing when emulation forms the heart of the learning?<br />This paper reflects upon a series of large scale fabrication projects offered to students from 2012-2014 in Christchurch, New Zealand, under the umbrella of FESTA. These projects challenged the students to confront a series of ‘firsts’; to work collaboratively, to present themselves professionally, to navigate regulatory bodies, to engage with a client, and to realise a project at full, one to one, scale.<br />These projects tend to exist without a specific precedent for students to draw upon, as would be usual when designing one of any number a normal building typology. This forces students into a space of discovery, one where a design can change for any multitude of reasons. Students are moved from the usual Design Studio experience of problem solving to one where the situation is uncertain and problematic, to a space of problem setting.</p>
No Clear Benefit of Chlorhexidine Use at Home Before Surgical Preparation
Authors: Makhni Melvin Chugh , Jegede Kolawole , Lombardi Joseph , Whittier Susan , Gorroochurn Prakash , Lehman Ronald A. , Riew K. Daniel 
Published: December 2017

Introduction:
Several studies have evaluated the efficacy of home use of chlorhexidine before surgery to reduce bacterial colonization. However, these studies have provided conflicting evidence about the potential efficacy of this strategy in decreasing bacterial loads and infection rates across surgical populations, and no prior study has analyzed the benefit of this intervention before spine surgery. We prospectively analyzed the effectiveness of chlorhexidine gluconate wipes for decreasing bacterial counts on the posterior neck.

Methods:
Sixteen healthy adults participated in this prospective study. The right side of each participant’s neck was wiped twice (the night before and the morning of the experiment) with chlorhexidine gluconate wipes. The left side was used as the control region. Bacterial swabs were obtained as a baseline upon enrollment in the study, then upon arrival at the hospital, and, finally, after both sides of the neck had received standard preoperative scrubbing.

Results:
All patients had positive baseline bacterial growth (median >1,000 colonies/mL). When chlorhexidine gluconate wipes were used, decreased bacterial counts were noted before the preoperative scrub, but this finding was not statistically significant (P = 0.059). All patients had zero bacteria identified on either side of their neck after completion of the preoperative scrub.

Conclusion:
At-home use of chlorhexidine gluconate wipes did not decrease the topical bacterial burden. Therefore, using chlorhexidine gluconate wipes at home before surgery may offer no added benefit.