bluuebunny/crossref_metadata_2025 huggingface dataset:
Parasite in the system: Self-reflexivity in emerging network culture
Authors: Reddiar Wayne
Published: February 2015

This article aims to provide an account of self-reflexivity through recent debates that pertain to thinking about contemporary network culture. It focuses on the shifts from the mechanistic to the organic, and then towards the post-organic, pertaining particularly to current debates around an understanding of systems and structures. Although it employs a wide variety of disciplines, ranging from philosophy to mathematics, this article traces the lineage from modern art towards thinking about systems. This work is part of an ongoing research objective that is directed towards practice-based research, particularly aimed at art practice that seeks to intersect with emerging network thinking and culture. One of the intentions of this article is to consider the account of self-reflexivity towards the implication of a ‘system as the medium’ in contemporary art practice, which is found in the writing of Francis Halsall. The research is part of an agenda that seeks to explore the conditions of production in contemporary culture, as a supplement to practice-based research. This article frames the debates around self-reflexivity through the chapter entitled ‘Strange loops’ by Mark C. Taylor, which is found in his book The Moment of Complexity: Emerging Network Culture (2001). It traces the lineage that Francis Halsall provides in his book Systems of Art: Art, History and Systems Theory (2008), and seeks to provide an account of self-reflexivity towards his consideration of the system as medium, found in the chapter entitled ‘Systems aesthetics and the system as medium’. In this chapter, Halsall provides an inclusive account of the medium that arguably covers the extent of contemporary art practices, through his contribution to system aesthetics.

The account of self-reflexivity introduced in this article follows a parallel pathway to some of the major points in Halsall’s development of the system as medium. These include the ontologically stable modernist art object; the impact of cybernetics and information theory on art practice and discourse; and art that seeks to intersect with the environment.
Reflections on art, nature and technology: The role of technology, algorithm, nature, psyche and imagination in the aspiration of an aesthetic experience
Authors: Lopreiato Paola
Published: February 2015

There is something frustrating in the concept of algorithm that can even worry: its limitations. An algorithm does not need the time to define itself, it possesses in its structure everything that defines it and can work exclusively in a site, such as a computer, which is itself another finite system. Whenever a particular algorithm will be executed it will always be inexorably equal to itself because the number of possible states is finite. A logical­mathematical algorithm is essentially very different from a living being that reveals its being only in the passage of time, in the relationship with the environment, in the happening of events. On the contrary there is a strong relationship between living things and the art, since art essentially needs time to express itself. The art has a time dimension, if for no other reason, because the purpose of art is reaching human beings. But art, through technology, can also broaden its horizons. Art can make use of the technology and can do exactly as the man whose expression is, to grow, to expand, to discover new identities, to conduct an investigation in those distant places, on the border with the irrational.
No nature on Spaceship Earth
Authors: Pothier Benjamin
Published: February 2015

As the post-digital organic landscape evolves through the rapid hybridization of ­practices, from genetic engineering to the creative use of nano technologies and syncretic approaches that are made easier by an always growing number of ­planetary connected telematic networks, and as we face, as a species, increasing environmental problems that more and more people and organizations plan to fix through geoengineering and terraforming solutions, the divide between the engineered and the organic tends to blur… At the same time various contemporary intellectual trends and path of research in philosophy, anthropology, or even archeology and geology lead to reconsider the place of human in the Universe, the anthropocentred perspective or even the concept of Nature itself. Be it through concepts as diverse as Next nature, Anthropocene, Spaceship Earth, the Laboratory Planet or symmetrical archeology. Through the democratization of access to various tools like 3D printers, bio experiment kits or free software communities, the number of transdisciplinary experiments and research projects is growing, which by feedback is accelerating the processes of merging between disciplines. Those different factors are accelerating the hybridization of disciplines and intellectual trends the same way the re-engineering of nature from the nano to the geno level are blending the border between natural and artificial. How are those technoetic approaches and their interconnection a game changer of the geo-eco-nano-politico-philosophico-spiritual landscape on Earth in the twenty-first century? I will discuss these questions in this article while showing the differences and similarities between some of the main philosophical concepts that are currently applied to those questions. By recontextualizing those various philosophical approaches maybe we can draw a map of the future evolutions and mutations that will influence learning, research and creativity in the coming years and decades.
Sprachgemeinschaft im Streit
Authors: Reitz Tilman
Published: February 2015

Politischer Streit wird nicht zuletzt mit Worten geführt. Doch auch über deren Gebrauch und die Befugnis, sie zu verwenden, herrscht Uneinigkeit. Autoren wie Lyotard und Rancière haben auf diesen Dissens ganze politische Theorien gegründet. »Sprachgemeinschaft im Streit« fragt bescheidener und analytischer, wie widerstreitende Sprachverwendungen den Rahmen politischer Verständigung verschieben und was sie mit sonstigem politischen Handeln verbindet. Tilman Reitz nutzt dafür die pragmatische Sprachphilosophie von Wittgenstein bis Brandom und zeigt so quer zu »poststrukturalistischen« und »analytischen« Üblichkeiten, wie Sprache jenseits anerkannter Regeln politisch wirken kann.
Producción hortícola sustentable: una apuesta para mejorar la calidad de vida de jóvenes en situación de riesgo
Authors: Rosini María Belén , Castagnino Ana María , Sesto Anabella
Published: February 2015

La actividad hortícola, entre sus múltiples posibilidades, representa una oportunidad de reinserción laboral para jóvenes en situación de riesgo (JSR) a través de implementación de proyectos productivos interinstitucionales con enfoque sistémico (PPIES). A fin de impulsar producciones hortícolas sustentables de calidad, como estrategia para la expansión del sector hortícola en Olavarría, la reinserción social de JSR y mejora de la calidad de vida de los habitantes, se generó el proyecto interinstitucional “Hacia la diferenciación de productos hortícolas con potencial regional: caso La Granja”. Se efectuaron capacitaciones, implementación de protocolos y planillas de registro; se equipó un área de poscosecha y se acondicionó en fresco la producción lograda. La contribución del proyecto no sólo estuvo relacionada con mejores resultados productivos, en rendimiento y calidad, sino que además contribuyó a la mejora de factores psicológicos y emocionales observados en el cambio de actitud, lo cual aumentó las sensaciones positivas del grupo.
Horta de plantas medicinais para uso terapêutico e nutricional
Authors: Vagenas Dulci N. F. , Fagioli Daniela , Rodrigues Altamiro , De Campos Marta Leni O. S.
Published: February 2015

A Organização Mundial da Saúde estima que quase 85 % da medicina tradicional envolve o uso de plantas medicinais, seus extratos vegetais e seus princípios ativos. O objetivo desse trabalho foi criar uma horta de plantas medicinais nas instalações de uma Associação Beneficente, Santana de Parnaíba, São Paulo e ensinar às mães como plantar, colher, preparar e ministrar os chás. Foi realizado o plantio de 11 plantas medicinais de consonância com a regulamentação da Agência Nacional de Vigilância Sanitária, para uso terapêutico e nutricional. Até o presente momento foi realizado o primeiro mutirão da saúde, onde foi oferecido chá de hortelã e um folder explicativo como modo de preparo e no mês de maio/2014, a semana de saúde e beleza, onde oferecemos chá de manjericão e pesto. Ressalto que os participantes apresentaram elevada aceitabilidade, avaliando como excelente, pois os mesmos são de fácil preparo e sabor muito agradável.
La promoción de la vigilancia de la aptitud física en la población de la ciudad de Santa Fe
Authors: Fessia Gabriel , Jáuregui Soledad , Reus Verónica
Published: February 2015

Este artículo describe las estrategias utilizadas para contribuir a la promoción de la vigilancia de la aptitud física en distintas instituciones deportivas de la ciudad de Santa Fe, Argentina, desarrolladas a partir de un Proyecto de Extensión de Interés Social de la Universidad Nacional del Litoral. El proyecto consistió en un trabajo interrelacionado entre alumnos y docentes de la Facultad de Ciencias Médicas, junto con instituciones deportivas de la ciudad de Santa Fe, con el objeto de consensuar conocimientos referidos a la valoración de la aptitud física, de manera precisa y eficiente, no sólo respecto de los deportistas amateur, de los de mediano y de alto rendimiento, sino también de personas activas y sedentarias que tienen como meta el mejoramiento de su calidad de vida. La iniciativa se enmarca en la idea de desarrollo local sustentable con foco en la promoción de la salud.
The distributed parallel genetic algorithm on the ad hoc network
Authors: Afifi Nima , Tavakoli Hassan
Published: February 2015

Today, mobile computing is one of the important issues in computer and network sciences. Using the processing power of mobile devices purposefully for solving complex issues is one of the research fields for researchers. One of the important issues in the optimization which needs a high processing power for finding the best possible answer is travelling salesman problem. In this paper, by providing a method based on the distributed parallel genetic algorithm on a number of mobile nodes in the Ad Hoc network, it was attempted to increase the speed of finding the best answer for the travelling salesman algorithm.
Forecasting about EURJPY exchange rate using hidden Markova model and CART classification algorithm
Authors: Haeri Abdorrahman , Hatefi Seyed Morteza , Rezaie Kamran
Published: February 2015

The goal of this paper is forecasting direction (increase or decrease) of EURJPY exchange rate in a day. For this purpose five major indicators are used. The indicators are exponential moving average (EMA), stochastic oscillator (KD), moving average convergence divergence (MACD), relative strength index (RSI) and Williams %R (WMS %R). Then a hybrid approach using hidden Markov models and CART classification algorithms is developed. Proposed approach is used for forecasting direcation (increase or decrease) of Euro-Yen exchange rates in a day. Also the approach is used for forecasting differnece between intial and maximum exchange rates in a day. As well as it is used for forecasting differnece between intial and minimum exchange rates in a day. Reslut of proposed method is compared with CART and neural network. Comparison shows that the forecasting with proposed method has higher accuracy.
Gender dan Pengembangan Pemikiran Pendidikan Islam
Authors: Yatazaka Yu’timaalahu
Published: February 2015

Artikel ini berisi penjelasan tentang diskursus gender dalam pengembangan pemikiran pendidikan Islam, dan dijumpai banyak problem ketidakadilan, yang diperlukan solusi untuk mengatasinya. Problem fundamental gender pada level epistemologis-metodologis untuk mengembangkan pendidikan Islam berbasis gender ini ialah direkonstruksinya aspek epistemologi pendidikan Islam. Para pendidik dan peserta didik juga perlu mengubah paradigma dan mindset pada sensitif gender. Artikel ini juga berisi penjelasan tentang metodologi pendidikan Islam berbasis gender dengan pendekatan integrasi, normatif, historis dan intuitif untuk merespon isu-isu gender dalam praktik pendidikan Islam
Ulama Perempuan di Panggung Pendidikan: Menelursuri Kiprah Nyai Hj. Nok Yam Suyami Temanggung
Authors: Indriati Anisah
Published: February 2015

Istilah ulama, seringkali dikaitkan dengan kaum laki-laki.Padahal tidak bisa disangkal adanya figur agama perempuan dalam sejarah Islam. Karena itu, usaha mengungkap sisi ke-ulama-an perempuan menjadi kajian yang patut dikembangkan. Artikel ini membahas tentang pemikiran Ny. Hj. Nok Suyami dan kiprahnya di masyarakat. Penelitian kualitatif ini termasuk penelitian life story yang sumber datanya diperoleh melalui wawancara dengan analisis domain di Temanggung. Penelitian ini menyimpulkan bahwa Sosok Hj. Nok Suyami memenuhi syarat untuk disebut sebagai ulama’ dikarenakan beberapa hal mendasar yang melekat dalam dirinya. Yaitu: (1) kapasitas keilmuan agama yang mumpuni, (2) progresifitas akademik, (3) jiwa sosial kemanusiaan yang tinggi, (4) kemampuan beradaptasi dengan masyarakat yang baik dan (5) ketokohan yang diakui oleh masyarakat umum.
Gerakan Perempuan Nahdlatul Ulama dalam Transformasi Pendidikan Politik
Authors: Roviana Sri
Published: February 2015

‘NU’ yang merupakan ormas Islam di Indonesia, adalah ormas terbesar dalam hal kuantitas (jumlah pengikutnya). Hal ini dapat dilihat dari pengikutnya. Ada sejumlah 56 % dari penduduk beragama Islam di Indonesia, atau sejumlah 88,7 % dari total penduduk Indonesia, atau sejumlah 237,7 juta orang. Gerakan perempuan NU, Muslimat dan Fatayat, merupakan ormas Islam terbesar diIndonesia. Pendidikan pesantren dengan model membaca kitab kuning denganmetode sorogan dan bandongan sering diselenggarakan di pesantren NU. Fatayat dan Muslimat aktif dalam gerakan politik Indonesia sejak Indonesia merdeka. Kajian ini merupakan penjelasan gerakan sosial yang dilakukannya di beberapa negara. Secara khusus gerakan sosial yang dilakukan adalah religious movement.
Pendidikan dan Emansipasi wanita dalam Pandangan Abbas Mahmud al-’Aqqad (Nadlariyah Abbas Mahmud 'Aqqad fi Tarbiyatil Mar'ati wa Tahririha)
Authors: Saidah Nur
Published: February 2015

The issue of women is still a serious discourse for discussion, both about the identity, The issue of women is still a serious discourse for discussion, both about the identity, position and role, even to the character and intellect. This article discusses the theory of education and emancipation of women in view of Abbas Mahmud al - 'Aqqad, an Egyptian thinker, poet, philosopher and journalist scholars in the late - 19th and early 20th century. According to al - 'Aqqad, women have equal footing with men in education and all social roles. But the natural differences between women and men demanding the division of different roles, so that the relationship of women and men should be a partnership. Conservative viewsof ' Aqqad theory based on the Koran, the Hadith position and role, even to the character and intellect. This article discusses the theory of education and emancipation of women in view of Abbas Mahmud al-‘Aqqad, an Egyptian thinker, poet, philosopher and journalist scholars in the late - 19th and early 20th century. According to Him, women have equal footing with men in education and all social roles. But the natural differences between women and men demanding the division of different roles, so that the relationship of women and men should be a partnership. Conservative viewsof ‘ Aqqad theory based on the Koran, the Hadith and the research on the female characters. This theory is in line with structuralist functionalist theory. Structuralist theory gravitate to sociology, while learning functionalist psychological theory, but they have same conclusion, that the relationship of women and men is the preservation of harmony, not competition. ‘Aqqad’stheory could be a solution to the issue of family crisis and child neglect that often occurs as a result of the division of the marital partnership roles are less than ideal. and the research on the female characters. 'Aqqad’stheory could be a solution to the issue of family crisis and child neglect that often occurs as a result of the division of the marital partnership roles are less than ideal.
Influence of selected environmental factors on
macroinvertebrates in mountain streams
Authors: Lewin Iga , Szoszkiewicz Krzysztof , Jusik Szymon , Ławniczak Agnieszka E.
Published: February 2015

The objectives of our survey were: to analyze the
structure of macroinvetebrate communities in mountain
streams in national parks and Biosphere Reserves (Poland,
the Slovak Republic), to determine the environmental
factors that influence the structure of macroinvertebrate
communities and to assess the stream habitats including
the bank and channel features, any modifications, land
use and channel vegetation. Our results showed that
in addition to the conductivity, the altitude, stream
gradient and the values of the HQA index that reflected
more natural features in the channel and river corridor
were most important. The River Habitat Survey (RHS)
method reflects not only the morphology but also the
relationships between habitat features and the structure
of macroinvertebrate communities and it provides a
more holistic approach to assessing the health condition
of stream ecosystems. Headwater streams support
unique macroinvertebrate taxa that are found nowhere
else in a catchment and may also constitute refuges for
in-stream biota. Some of the least water pollution-tolerant
macroinvertebrate taxa were recorded.
Optimization of Data Acquisition and Sample
Preparation Methods for LC-MS Urine
Metabolomic Analysis
Authors: Skibiński Robert , Komsta Łukasz
Published: February 2015

Nowadays, chromatographic methods coupled
with mass spectrometry are the most commonly used tools
in metabolomics studies. These methods are currently
being developed and various techniques and strategies are
proposed for the profiling analysis of biological samples.
However, the most important thing used to maximize
the number of entities in the recorded profiles is the
optimization of sample preparation procedure and the data
acquisition method. Therefore, ultra high performance
liquid chromatography coupled with accurate quadrupoletime-
of-flight (Q-TOF) mass spectrometry was used for the
comparison of urine metabolomic profiles obtained by
the use of various spectral data acquisition methods. The
most often used method of registration of metabolomics
data acquisition – TOF (MS) was compared with the fast
polarity switching MS and auto MS/MS methods with the
use of multivariate chemometric analysis (PCA). In all the
cases both ionization mode (positive and negative) were
studied and the number of the identified compounds was
compared. Additionally, various urine sample preparation
procedures were tested and it was found that the addition
of organic solvents to the sample noticeably reduces the
number of entities in the registered profiles. It was also
noticed that the auto MS/MS method is the least efficient
way to register metabolomic profiles.
An ERP Study in English Relative Clause Processing by Chinese-English Bilinguals
Authors: Wang Huili , Ma Liwen , Wang Youyou , Troyer Melissa , Li Qiang
Published: February 2015

The processing of relative clauses receives much concern from linguists. The finding that object relatives are easier to process than subject relatives in Chinese challenges the notion that subject relative clauses are preferred universally. A large body of literature provides theories related to sentence processing mechanisms for native speakers but leaves one area relatively untouched: how bilinguals process sentences. This study is designed to examine the case where the individuals with a Chinese L1 language background process subject-extracted subject relative clauses (SS) and subject-extracted object relative clauses (SO) by using eventrelated potentials (ERPs) to probe into the real-time language processing and presents a direct manifestation of brain activity. The findings from this study support the subject relative clause preference due to the strong influence of English relative clause markedness and bilinguals’ relative lower working memory capacity.
Energy Harvesting under Large Temperature Gradient – Comparison of Silicides, Half-Heusler Alloys and Ceramics
Authors: Wunderlich Wilfried
Published: February 2015

This paper reports about a new four-step analysis method for thermoelectric (TE) materials. While the Seebeck coefficient is usually measured under small temperature gradient, we report here the measurement of TE materials under large temperature gradient. The examined materials were Ag- and Bi-doped Mg2Si, Si80Ge20, the ceramic composite NaTaO3-Fe2O3, the half-Heusler alloy (TiZr)NiSn, and the clathrates Ba8Cu
x
Si48-x
with x=8, 12. The results show that the latter two metallic-like material groups have a low internal resistance. Hence, their output power is achieved at large electric currents with high carrier concentrations, while ceramic and silicides show the maximum output power at lower carrier concentration, which is considered to be a result of their large effective masses. The Arrhenius plot of the output energy yielded isosbestic-like points for ceramic-like materials, while the metal-like specimens show constant activation energies in the order of less than 0.1 eV. While all compared materials have reported ZT values around 0.4, the output energy was similar and measured as around 0.01 mW. Advantages of the metallic TE materials are their high carrier concentration and easy processing, disadvantages are their sensitivity to impurities and oxidation.
Mechanical Properties of Sandy Soil Improved
with Cement and Nanosilica
Authors: Choobbasti Asskar Janalizadeh , Vafaei Ali , Kutanaei Saman Soleimani
Published: February 2015

In the literature, studies show that nanosilica
particles and artificial pozzolans possessing can improve
structural properties of cement-based materials. This paper
studies the effect of cement and nanosilica on the engineering
properties (compaction, unconfined compressive
strength) of sand. Three different cement ratios (5, 9, and
14% by weight of dry sand) were mixed with four different
nano silica ratios (0, 5, 10, and 15% by weight of cement),
and then compacted into a cylindrical specimen. The results
of the study presented that the addition of the cement
and nanosilica improves the engineering properties
of sands. The increase of maximum dry unitweight of sand
was noted with the increase in the cement content. The
presence of nanosilica in optimal percentages can significantly
improve the mechanical properties of cement sand.
Using an artificial neural network for the evaluation of the parameters controlling PVA/chitosan electrospun nanofibers diameter
Authors: Karimi Mohammad Ali , Pourhakkak Pouran , Adabi Mahdi , Firoozi Saman , Adabi Mohsen , Naghibzadeh Majid
Published: February 2015

The purpose of this study was to investigate the validity of an artificial neural network (ANN) method in the prediction of nanofiber diameter to assess the parameters involved in controlling fiber form and thickness. A mixture of polymers including poly(vinyl alcohol) (PVA) and chitosan (CS) at different ratios was chosen as the nanofiber base material. The various samples of nanofibers were fabricated as training and testing datasets for ANN modeling. Different networks of ANN were designed to achieve the purposes of this study. The best network had three hidden layers with 8, 16 and 5 nodes in each layer, respectively. The mean squared error and correlation coefficient between the observed and the predicted diameter of the fibers in the selected model were equal to 0.09008 and 0.93866, respectively, proving the efficacy of the ANN technique in the prediction process. Finally, three-dimensional graphs of the electrospinning parameters involved and nanofiber diameter were plotted to scrutinize the implications.
2D and 3D seismic measurements to evaluate thecollapse risk of an important prehistoric cave insoft carbonate rock
Authors: Leucci Giovanni , Giorgi Lara De
Published: February 2015

The southern part of the Apulia region (theSalento peninsula) has been the site of at least fifteen collapseevents due to sinkholes in the last twenty years. Themajority of these occurred in "soft" carbonate rocks (calcarenites).Man–made and/or natural cavities are sometimesassets of historical and archaeological significance.This paper provides a methodology for the evaluation ofsinkhole hazard in "soft" carbonate rocks, combining seismicand mine engineering methods.Acase study of a naturalcavity which is called Grotta delle Veneri is illustrated.For this example the approach was: i) 2D and 3D seismicmethods to study the physical-mechanical characteristicsof the rock mass that constitutes the roof of the cave; andii) scaled span empirical analysis in order to evaluate theinstability of the crown pillar’s caves.
Newly developed paleomagnetic map of the EasternmostMediterranean joined with tectono-structural analysis unmaskgeodynamic history of this region
Authors: Eppelbaum Lev , Katz Youri
Published: February 2015

Comprehensive magnetic-paleomagnetic analysisof physical-geological models developed for the EasternmostMediterranean (northern part of the Sinai plate)accompanied by gravity and seismic data examination enabledthe detection of a zone of inverse magnetizationof submeridional strike with a total volume exceeding120,000 km3. Such a large zone must correspond to theprolonged period of inverse polarity in the Earth’s magneticfield history. We suggest that this inversely magnetizedthick block of the Earth’s crust corresponds tothe known Kiama hyperzone. A paleomagnetic map constructedon the basis of abovementioned geophysical dataanalysis combined with detailed examination of structural,radiometric, petrological, facial, paleogeographicaland some other data indicates that to the west ofthe Kiama zone is situated the Jalal zone, and to theeast – Illawarra, Omolon and Gissar zones. Discovery ofthe Kiama paleomagnetic zone combined with tectonogeodynamicalanalysis and paleobiographical data examinationindicates that the Earth’s oceanic crust blocks mayhave been shifted by transform faults from the eastern partof the Tethys Ocean to their modern position in the EasternmostMediterranean. Analysis of potential geophysicalfields and seismological maps integrated with tectonostructuralexamination show the isolation of the northernpart of Sinai plate from other terranes. For the first timeformation-paleogeographical maps of Triassic and Jurassicfor the Easternmost Mediterranean have been compiledand their tectono-geodynamical explanation hasbeen given. The obtained data create a basis for reconsideringtectonic zonation, paleogeodynamical reconstructionsand searching for economic deposits in this region.
Wood-based activated carbons for supercapacitors with organic electrolyte
Authors: Dobele Galina , Volperts Aleksandrs , Telysheva Galina , Zhurinsh Aivars , Vervikishko Daria , Sametov Anatoly , Shkolnikov Evgeny , Ozolinsh Jurijs
Published: February 2015

The thermocatalytical synthesis conditions required for the activation of wood charcoal with NaOH in terms of the formation of pores in its structure were investigated. The present study was conducted to explore the potential application of activated carbons as electrodes in supercapacitors with organic electrolyte. The total pore volume and micro- and mesopore ratio were controlled by the activation temperature and alkali addition rate. The working characteristics of carbon electrodes (e.g., specific capacity and ohmic losses) in supercapacitors are strongly influenced by the properties of the pores in their structures. Herein, the optimal ratio of raw material to activator and activation temperature are established: an increase in the ratio of NaOH to carbonizate rate by a factor of 2 and setting the synthesis temperature at 700°C positively influence the electrochemical characteristics of supercapacitors and provide them with specific capacities of up to 160 F g-1.
Numerical Simulation to Study the Effect of Arc Travelling Speed and Welding Sequences on Residual Stresses in Welded Sections of New Ferritic P92 Pipes
Authors: Wang Xiaowei , Gong Jianming , Zhao Yanping , Wang Yanfei , Ge Zhiqiang
Published: February 2015

New ferritic P92 steel is widely used in modern power plants due to its good combination of mechanical and physical properties. However, cracks are often formed in the welded sections during the fabrication or service. In order to ensure the structure integrity, the effects of residual stresses need to be considered. The objective of this paper is to investigate the influence of arc travelling speed and welding sequences on the residual stresses distribution in the welded sections of P92 pipes by finite element method (FEM). Results show that arc travelling speed and welding sequences have great effects on residual stresses distribution. With the arc travelling speed increasing, the residual stresses increase. Meanwhile, welding sequences of case B present smaller residual stresses and more symmetrical distribution of residual stresses at the weld centre line. Therefore, using slower arc travelling speed and case B welding sequences can be useful to decrease the residual stresses, which provides a reference for optimizing the welding technology and improving the fabrication process of new ferritic P92 welded pipes with small diameter and thick wall.
A Power Regulation and Droop Mode Control Method for a Stand-Alone Load Fed from a PV-Current Source Inverter
Authors: Khayamy Mehdy , Ojo Olorunfemi
Published: February 2015

A current source inverter fed from photovoltaic cells is proposed to power an autonomous load when operating under either power regulation or voltage and frequency drooping modes. Input–output linearization technique is applied to the overall nonlinear system to achieve a globally stable system under feasible operating conditions. After obtaining the steady-state model that demarcates the modes of operation, computer Simulation results for variations in irradiance and the load power of the controlled system are generated in which an acceptable dynamic response of the power generator system under the two modes of operation is observed.
Translation and Evaluation of the Cultural Awareness Scale for Korean Nursing Students
Authors: Oh Hyunjin , Lee Jung-ah , Schepp Karen G
Published: February 2015

Background: To evaluate the effectiveness of a curriculum for achieving high levels of cultural competence, we need to be able to assess education intended to enhance cultural competency skills. We therefore translated the Cultural Awareness Scale (CAS) into Korean (CAS-K). The purpose of this study was to evaluate the cross-cultural applicability and psychometric properties of the CAS-K, specifically its reliability and validity.

Methods: A cross-sectional descriptive design was used to conduct the evaluation. A convenience sample of 495 nursing students was recruited from four levels of nursing education within four universities in the city of Daejeon, South Korea.

Results: This study provided beginning evidence of the validity and reliability of the CAS-K and the cross-cultural applicability of the concepts underlying this instrument. Cronbach’s alpha ranged between 0.59 and 0.86 (overall 0.89) in the tests of internal consistency. Cultural competency score prediction of the experience of travel abroad (r=0.084) and the perceived need for cultural education (r=0.223) suggested reasonable criterion validity. Five factors with eigenvalues >1.0 were extracted, accounting for 55.58% of the variance; two retained the same items previously identified for the CAS.

Conclusion: The CAS-K demonstrated satisfactory validity and reliability in measuring cultural awareness in this sample of Korean nursing students. The revised CAS-K should be tested for its usability in curriculum evaluation and its applicability as a guide for teaching cultural awareness among groups of Korean nursing students.
Nearest-neighbor matchup effects: accounting for team matchups for predicting March Madness
Authors: Hoegh Andrew , Carzolio Marcos , Crandell Ian , Hu Xinran , Roberts Lucas , Song Yuhyun , Leman Scotland C.
Published: February 2015

Recently, the surge of predictive analytics competitions has improved sports predictions by fostering data-driven inference and steering clear of human bias. This article details methods developed for Kaggle’s
Solutions of minus partial ordering equations
over von Neumann regular rings
Authors: Guan Yu , Tong Zhaojia
Published: February 2015

In this paper, we mainly derive the general solutions of two systems of minus partial ordering equations
over von Neumann regular rings. Meanwhile, some special cases are correspondingly presented. As applications, we
give some necessary and sufficient conditions for the existence of solutions. It can be seen that some known results
can be regarded as the special cases of this paper.
Pulse Propagation in a Non-Linear Medium
Authors: Edah Gaston , Adanhounmè Villévo , Kanfon Antonin , Guédjé François , Hounkonnou Mahouton Norbert
Published: February 2015

This paper considers a novel approach to solving
the general propagation equation of optical pulses in
an arbitrary non-linear medium. Using a suitable change
of variable and applying the Adomian decomposition
method to the non-linear Schrödinger equation, an analytical
solution can be obtained which takes into accountparameters
such as attenuation factor, the second order
dispersive parameter, the third order dispersive parameter
and the non-linear Kerr effect coefficient. By analysing the
solution, this paper establishes that this method is suitable
for the study of light pulse propagation in a non-linear
optical medium.
High temperature and pressure effects on the elastic properties
of B2 intermetallics AgRE
Authors: Liu Lili , Wu Xiaozhi , Li Weiguo , Wang Rui , Liu Qing
Published: February 2015

The high temperature and pressure effects on the
elastic properties of the AgRE (RE=Sc, Tm, Er, Dy, Tb) intermetallic
compounds with B2 structure have been performed
from first principle calculations. For the temperature
range 0-1000 K, the second order elastic constants
for all the AgRE intermetallic compounds follow a normal
behavior: they decrease with increasing temperature. The
pressure dependence of the second order elastic constants
has been investigated on the basis of the third order elastic
constants. Temperature and pressure dependent elastic
anisotropic parameters A have been calculated based
on the temperature and pressure dependent elastic constants.
Response of a fractional nonlinear system to
harmonic excitation by the averaging method
Authors: Duan Jun-Sheng , Huang Can , Liu Li-Li
Published: February 2015

In this work, we consider a fractional nonlinear
vibration system of Duffing type with harmonic excitation
by using the fractional derivative operator -∞−1Dα
t and the
averaging method. We derive the steady-state periodic response
and the amplitude-frequency and phase-frequency
relations. Jumping phenomena caused by the nonlinear
term and resonance peaks are displayed, which is similar
to the integer-order case. It is possible that a minimum
of the amplitude exists before the resonance appears for
some values of the modelling parameters, which is a feature
for the fractional case. The effects of the parameters in
the fractional derivative term on the amplitude-frequency
curve are discussed.
SUSY partners for spin-1/2 systems in nonrelativistic limits
Authors: Takou Daniel Sabi , Avossevou Gabriel Y.H. , Kounouhewa Basile B.
Published: February 2015

In this paper, we use some well-known techniques
of Supersymmetric QuantumMechanics (SUSYQM)
namely the factorization method and shape invariance,
to generate new analytically solvable potentials from
some interacting fermionic models in nonrelativistic limits.
These systems are described by the ordinary and the
harmonically trapped Schrödinger-Pauli particle models
and the Dirac-Coulomb Hamiltonian, this latter being set
in its nonrelativistic limits. The spectrum for each of these
models is obtained in a simple and transparent way. We
then generate new solvable potentials that describe interactions
between electromagnetic field and matter, paying
due attention to the subtleties inherent in the application
of SUSY to higher dimensional problems. SUSY breaking
problems related to the partner singularities are dicussed
along with the paper.
Comparing All-or-Nothing and Proportionate Damages: A Rent-Seeking Approach
Authors: De Mot Jef , Miceli Thomas J.
Published: February 2015

This paper compares the all-or-nothing and proportionate damage rules for allocating damages in tort cases under evidentiary uncertainty. The focus is on how the two rules affect litigation expenditures by plaintiffs and defendants. The results of simulation experiments show that the expected judgment at trial is higher under the all-or-nothing rule for cases where the defendant did not take adequate care, but the judgment is higher under the proportionate rule when the defendant took more than adequate care. As for litigation expenditures, assuming equal costs of litigation, overall expenditures are higher under the all-or-nothing rule, except for very weak and very strong cases.
Dynamics of the Sulfate Ion in Dilute Water-DMF Solutions
Authors: Nomura Hiroyasu , Koda Shinobu , Sakurai Takashi
Published: February 2015

The Raman band of the v1(A1) mode of SO4
2- of Li2S04 dissolved in water and water-dimethyl-formamide mixtures was measured in the concentration range 0.01 to 0.2 mol • dm-3. The central frequency of the sulfate ion increases with sulfate concentration. The limiting frequency at infinite dilution depends on the DMF content. The Raman band becomes asymmetric with increasing concentration of Li2SO4 in 20 wt% DMF mixtures and with addition of LiCl to the aqueous solution of Li2SO4. The vibrational relaxation behavior of the v1(A1) mode was investigated by analyzing the vibrational correlation function based on Kubo's stochastic theory.
On the Structure Factor for Water at Small Wavenumbers
Authors: Trokhymchuk A. D. , Holovkob M. F. , Heinzinger K.
Published: February 2015

The possibility of the existence of a pre-preak in the structure factor of water at 0.6 Å¯1 is discussed on the basis of the combination of computer simulation and integral equation theory techniques. It indicates spatial correlations in water at distances of the order of 10 Å.
Transfer Gibbs Free Energies of Divalent Anions from Water to Organic and Mixed Aqueous-OrganicSolvents
Authors: Marcus Y.
Published: February 2015

The standard molar Gibbs free energies of transfer of divalent anions, in particular sulfate, from water into methanol, ethanol, ethylene glycol, dioxane, tetrahydrofuran, acetone, N-methylformamide, N,N-dimethylformamide, pyridine, acetonitrile, and dimethylsulfoxide and mixtures of some of them with water or some other solvent have been obtained from the literature. The tetraphenylarsonium tetraphenylborate extrathermodynamic assumption has been used as far as possible in order to obtain the single ion values. The generally unfavorable transfers from water (or protic solvents) into polar aprotic ones are interpreted in terms of the properties of the anions and of the solvents, dominated by the hydrogen-bonding acidity of water.
The Electronic Structure of the Fe4S3+
4Cluster in Proteins: The Importance of Double Exchange Parameter
Authors: Belinskii Moshe , Bertini Ivano , Galas Oleg , Luchinat Claudio
Published: February 2015

The recently obtained Mössbauer and EPR parameters of the Fe4S4
3+ polymetallic center in the High Potential Iron-Sulfur Protein (HiPIP) II from E. halophila have been reproduced with models based on pure Heisenberg exchange. The role of double exchange versus ./-inequivalence is discussed. An evaluation of the upper limit of the double exchange parameter in the Fe4S4
3+ bimetallic center is also presented. The present calculations shed further light on the electronic structure of the Fe4S4
3+ center.
Molecular Dynamics in the Solid Trimethylamine-Borane Complex: A Deuterium NMR Study
Authors: Penner Glenn H. , Zhao Baiyi , Jeffrey Kenneth R.
Published: February 2015

The molecular dynamics of solid (CH3)3NBH3 is investigated by deuterium NMR spectroscopy. Variable temperature lineshape analyses yield activation energies of 27 ± 3, 19 ± 2, and 12.5 ± 2 kJ/mol for -CH3, -N(CH3)3 and -BH3 rotation, respectively. Analysis of the temperature depen­ dence of the spin-lattice relaxation times, T1 , gives activation energies of 33 ± 3, 15 ± 1.5, and 14 ± 1.5 kJ/mol, respectively. Direct comparison of rotational exchange rates (from lineshape simu­ lations) an of rotational correlation times (from T1 analyses) for -N(CH3)3 and -BH3 rotation indicate that the two motions are correlated in solid (CH3)3NBH3 and together constitute a whole molecule reorientation about the N-B bond. This is supported by an internal rotational barrier of 18.0 kJ/mol for-BH3 rotation, obtained from ab initio molecular orbital calculations at the MP2/6-31G* level.
Deuteron NMR of Methyl Groups in theTunneling Regime. A Single Crystal Study of Aspirin-CD3
Authors: Detken A. , Focke P. , Haeberlen U. , Olejniczak Z. , Lalowicz Z. T. , Zimmermann H.
Published: February 2015

We report the first single crystal deuteron NMR spectra of CD3 groups which display the socalled ±ß, ±(|α| ± ß) and ±(2|α| ± ß) lines characteristic of rotational tunneling in a sufficiently clear manner to allow a quantitative comparison with the respective theory developed in 1988 by the group of W. Müller-Warmuth. The molecular system we study is aspirin-CD3. We recorded spectra for differently oriented single crystals and measured spin-lattice relaxation times T1 in a wide temperature range. At 12.5 K we exploit the dependence of the ±(|α| ± ß) and ±(2|α| ± ß) lines on the orientation of the applied field B0 for determining the equilibrium orientation of the CD3 group in the crystal lattice. The spectra display features which allow, by comparison with simulated spectra, a measurement of the tunnel frequency vt. Its low temperature limit is (2.7 ± 0.1) MHz. It allows to infer the height V3 of the potential V(φ) in which the CD3 group moves, provided that this potential is purely threefold. We get V3 = (47.2 ± 0.5) meV. The transition from the tunneling to the classical, fast reorienting regime occurs in the 15 K ≲ T ≲ 35 K temperature range. In this range we observe a broadening, merging and eventually narrowing of the ± |α| and ±2|α| lines in very much the way predicted by Heuer. His theory, however, must be extended by taking into account all librational levels. The behaviour of the ± ß lines in the transition temperature range signalizes a reduction of the observable tunnel frequency with increasing temperature. This reduction allows an independent measurement of the potential height and represents a test of the assumption of a purely threefold potential. From the T1 -data we derive the temperature dependence of the correlation time Ƭc of the reorientational jumps. The plot of log Ƭc vs. 1 /T follows a straight line for more than five decades. From its slope we get yet another independent number for the potential height. It agrees well with the other ones, which confirms the assumption of the essentially threefold potential V(φ) in aspirin-CD3.
Computer-Aided Arrhenius-Evaluation of Kinetic Data
Authors: Hugo P. , Leonhardt J. , Wagner S.
Published: February 2015

A new evaluation method is presented to analyse the temperature dependance of reactions with rates that can be separated into a temperature dependent and a concentration dependent part. The proposed method allows to evaluate isothermal, adiabatic, isoperibolic and temperature programmed measurements in an unified manner. To determine the activation energy an Arrhenius law but no explicite kinetic model has to be assumed. The application of the method is demonstrated using experimental data of different reactions from former investigations.
On the Madelung Part of Lattice Energy
Authors: Hoppe Rudolf
Published: February 2015

The Born-Haber Cycle (BHC) is critically reviewed, the origin of severe limitations in its appli­ cation is shown. Partly this is based on the construction of the third step, partly it is connected with the fact that most of the "classical" anions of inorganic chemistry are instable, "unobservable" gaseous entities. The Madelung Part of Lattice Energy, MAPLE*, is extentionally analyzed (e.g. TiO2) to demonstrate that the similarity of thermodynamical properties like ΔH°298 of all modifica­ tions, reflected in MAPLE, is non-trivial. The analogous analysis with e.g. BaTiO3 proves that neither the classical "central ion" (here Ti4+) nor the "completing" cation (here Ba2+) but the "anions" coordinating the last mentioned cation BaO gain energy and, in this sense, "stabilize" the complex. Even simple compounds (e.g. A-La2O3) show surprising geometrical arrangements, in striking contrast to often used but simple minded concepts like "Bond Length/Bond Strength" and its derivatives like CHARDI, whereas such "oddities" are explained by MAPLE. The application of the theorem of additivity of MAPLE (MAPLEpolynary = Σ MAPLEbinary), that passes even in the case of hydrates, and its limitations are discussed. Guided by MAPLE, surprisingly complicated structures (e.g. Cs2Li3I5) of polynary derivatives of structurally exceedingly simple binary com­ pounds become "understandable". If "molecular" entities like SO3 are involved, limitations can be excluded using "increments". Last not least, MAPLE is the first known guide to a multi-dimen-sional but strict scheme of characterisation of Solid State Structures in the sense of Linne's ideas, based on geometrical facts only.
Wandgekühlte chemische Festbettreaktoren und deren Modellierung mit Ein-und Zweiphasenmodellen
Authors: Hein Steffen , Vortmeyer Dieter
Published: February 2015

Experimentally determined temperature and concentration profiles in a wall-cooled fixed-bed catalytic reactor are modelled equally well by the quasihomogeneous and heterogeneous model at a Reynolds number of Rep = 32. In both cases the good agreement between measured and calculated data is only achieved if the equations are solved for a radially uneven flow distribution and for a boundary condition at the reactor wall ensuring the same temperature of catalyst and wall at the contact point. The numerical solutions of the two-phase model demonstrate that the differences between solid and fluid temperature are low, even in the presence of a highly exothermic reaction like the oxidation of ethane.
An Optical Method for the Determination of the Cholesteric Pitch in Liquid Crystals
Authors: Dierking Ingo , Gießelmann Frank , Zugenmaier Peter
Published: February 2015

Preparation of a cholesteric liquid crystalline phase in planar orienting liquid crystal cells exhibits discontinuous colour changes with temperature when viewed between crossed polarizers. The trans­ mission spectra of such a system can be described by a modified de Vries equation, with the birefringence dispersion included in a simplified single-band model. With a suitable choice of the cell gap as compared to the cholesteric pitch, the procedure can be used as a new method to determine the temperature dependence of the cholesteric pitch.