bluuebunny/crossref_metadata_2025_split huggingface dataset:
An Impact of Mechanical Stress in Coal Briquettes on Sorption of Carbon Dioxide
Authors: Wierzbicki Mirosław 
Published: October 2017

AbstractThe presence of gases (methane or carbon dioxide) in hard coal is connected with numerous threats for miners employed in underground mining facilities. When analyzing the coal-methane system, it is necessary to determine the relationship between pressure and gas sorption. Such a relationship should be determined under conditions similar to the natural ones – when it comes to both temperature and pressure. The present paper discusses the results of research conducted with the use of coal briquettes under the state of mechanical stress. Carbon dioxide sorption isotherms were determined for different values of stress affecting the coal material. For five coal samples collected in different mines of the Upper Silesian Coal Basin, Langmuir’s sorption isotherms were determined. The results point to significant impact that mechanical stress has upon the sorption process. It is about 1 percent of the value obtained for coal not subjected to stress per 1 MPa. The research results can also prove useful when analyzing hard coal seams from the perspective of their carbon dioxide sequestration abilities.
Changes in the Concentration of Some Rare Earth Elements in Coal Waste
Authors: Nowak Jacek , Kokowska-Pawłowska Magdalena 
Published: October 2017

AbstractCoal waste is formed during coal mining and processing operations. That waste comprises mainly sedimentary rocks that occur in roofs and floors of underground workings and in partings in coal seams. It contains numerous trace elements, including rare earth elements (REEs). Hypergenic processes that take place in coal waste piles may lead to endogenous fires. Thermal transformations of waste have an effect on changes in its phase and chemical composition, including the concentration of trace elements.The paper presents changes in the content of selected rare earth elements (Sc, Y, La, Ce, Nd, Sm, Eu, Tb, Yb, Lu) in wastes of varying degree of thermal transformation. The results of REE content determination in lump samples were subjected to statistical analysis and coefficients of correlation between the studied rare earth elements and the main chemical constituents were determined.The primary carriers of REEs in coal waste are clay minerals. Phase transformations that take place at high temperatures (including dehydroxylation of clay minerals and formation of minerals characteristic of contact metamorphism) cause changes in the concentration of rare earth elements.
Determination of Critical Rock Mass in a Bucket of a Dinting Loader
Authors: Remiorz Eryk 
Published: October 2017

AbstractThe extraction of hard coal deposits lying in increasing depth causes significant problems with maintenance of roadways (maingates, tailgates, etc.). The reduction of the cross section of such excavations, caused by the floor upheaval, leads to the occurrence of many problems with transport and ventilation. Dinting loaders are employed to restore the original size of roadways tightened due to the activity of adverse stresses occurring in the rock mass. These are tracked machines, usually with small width of about 1 m. They often work in roadways with high longitudinal and lateral inclination, as a result of which they are especially susceptible to overturning.The article presents a mathematical model allowing to determine the critical mass of broken rock in a bucket. The model also allows to determine spatial coordinates of a dinting loader’s centre of gravity depending on temporary position of movable elements of the loader such as a turntable, boom, coupler and bucket, and depending on the level of loading the bucket with broken rock. It also enables to determine critical angles of the roadways’ longitudinal and lateral inclination. The outcomes of computer studies of variations in the position of the loader’s centre of gravity depending on deflection angles of moving elements of the loader and the mass of broken rock in the bucket are also presented. Variability ranges of spatial coordinates of the centre of gravity of the loader are also established and examples are given for values of the critical mass of broken rock in the bucket.
Empirical Models of Zones Protecting Against Coal Dust Explosion
Authors: Prostański Dariusz 
Published: October 2017

Abstract
The paper presents predicted use of research’ results to specify relations between volume of dust deposition and changes of its concentration in air. These were used to shape zones protecting against coal dust explosion. Methodology of research was presented, including methods of measurement of dust concentration as well as deposition. Measurements were taken in the Brzeszcze Mine within framework of MEZAP, co-financed by The National Centre for Research and Development (NCBR) and performed by the Institute of Mining Technology KOMAG, the Central Mining Institute (GIG) and the Coal Company PLC. The project enables performing of research related to measurements of volume of dust deposition as well as its concentration in air in protective zones in a number of mine workings in the Brzeszcze Mine.
Developed model may be supportive tool in form of system located directly in protective zones or as operator tool warning about increasing hazard of coal dust explosion.
Stope Stability Assessment and Effect of Horizontal to Vertical Stress Ratio on the Yielding and Relaxation Zones Around Underground Open Stopes Using Empirical and Finite Element Methods
Authors: Sepehri Mohammadali , Apel Derek , Liu Wei 
Published: October 2017

AbstractPredicting the stability of open stopes can be a challenging task for underground mine engineers. For decades, the stability graph method has been used as the first step of open stope design around the world. However, there are some shortcomings with this method. For instance, the stability graph method does not account for the relaxation zones around the stopes. Another limitation of the stability graph is that this method cannot to be used to evaluate the stability of the stopes with high walls made of backfill materials. However, there are several analytical and numerical methods that can be used to overcome these limitations. In this study, both empirical and numerical methods have been used to assess the stability of an open stope located between mine levels N9225 and N9250 at Diavik diamond underground mine. It was shown that the numerical methods can be used as complementary methods along with other analytical and empirical methods to assess the stability of open stopes. A three dimensional elastoplastic finite element model was constructed using Abaqus software. In this paper a sensitivity analysis was performed to investigate the impact of the stress ratio “k” on the extent of the yielding and relaxation zones around the hangingwall and footwall of the understudy stope.
Preparation of CaO-SiO2-CuO bioactive glasses-embedded anodic alumina with improved biological activities
Authors: Ni Siyu , Mei Lin , Ni Shirong , Cui Ran , Li Xiaohong , Hong Feng , Webster Thomas J. , Wu Chengtie 
Published: October 2017

AbstractTo improve bone cell cytocompatibility properties of porous anodic alumina (PAA) and implement anti-bacterial properties, amorphous CaO-SiO
An intensive presentations course in English for aeronautical engineering students using cyclic video recordings
Authors: Tatzl Dietmar 
Published: October 2017

Abstract
This article presents the design and evaluation of an intensive presentations course for aeronautical engineering students based on cyclic video recordings. The target group of this course in English for specific purposes (ESP) were undergraduate final-year students who needed to improve their presentation and foreign language skills to prepare for graduation and the workplace or further studies. This evaluative practitioner case study employed a mixed-methods design relying on a tailored paper questionnaire survey, teacher-assessed final presentations and teacher observation in class. Respondents were asked to rate course-related statements on language learning and presentation skills development on a 5-point Likert scale. With two student year groups in consecutive years, attendance at and engagement in the course were high, and student evaluations (N=41) suggested that the course had met its targets. Both the questionnaire ratings and the free verbal survey feedback were overwhelmingly positive and accorded with teacher-assessed student performance in the final presentations. The interactive, practice-oriented and video-backed design features, therefore, enabled students to develop their language as well as presentation skills through aviation-related contents. Even though the setting presented involves aeronautical engineering students, instructors in similar Science, Technology, Engineering and Mathematics (STEM) and other academic contexts will be able to adapt the concept behind this course to their own specific teaching situations.
Mother-tongue diversity in the foreign language classroom: Perspectives on the experiences of non-native speakers of English studying foreign languages in an English-medium university
Authors: Bruen Jennifer , Kelly Niamh 
Published: October 2017

AbstractThis paper considers the position of university language students whose mother tongue is other than the medium of instruction. Specifically, it investigates the attitudes and experiences of non-native English speakers studying either German or Japanese as foreign languages at an English-medium university. The findings indicate that the non-native speakers (NNSs) of English consider themselves to be at an advantage over the native speakers (NSs) of English in the study of German and Japanese as Foreign Languages, despite the fact that the medium of instruction is English, at least in the early stages of the language module. This is primarily owing to the fact that the non-native English speakers are already experienced language learners with an extensive linguistic repertoire. This view is supported by the NSs of English. Some concerns are expressed by non-native speakers of English in relation to an assumed knowledge of culture and society of the host country. The implications of these findings are discussed. Diverging from previous studies, this research focuses on learners of languages other than English and contributes to recent discussions on the increase in linguistic and cultural diversity and its impact within the foreign language classroom.
Giving learners a multicultural voice: An English speaking university context
Authors: Nunan Anna 
Published: October 2017

AbstractDifficulties establishing support for English speakers taking second language electives in postsecondary education in Ireland led to research on how language classes could be more accessible, multicultural, plurilingual and relevant for students in a university language centre. It is important to try and discover why students choose a foreign language module in an English speaking context, how prior experiences of language learning are processed by these students and how student suggestions for future semester offerings may be relevant to changing paradigms in language learning. 2,600 student evaluations over 3 semesters were analysed in relation to student motivation in taking a foreign language elective. 25 students were interviewed on their motivation in language learning, prior experience of language learning and suggestions for future language modules. Motivation in language learning is a complex process (
Re-thinking the Veil, Jihad and Home in Fadia Faqir’s Willow Trees Don’t Weep (2014)
Authors: Sarnou Dallel 
Published: October 2017

Abstract
In her latest novel Willow Trees Don’t Weep(2014), the writer Fadia Faqir decided to go against the grain as a Muslim woman coming from the Middle East but lives in Britain and write about jihad, terrorism and Taliban. In this novel, the author negotiates meanings of secularism, fundamentalism, jihad, fathering, women and wars. The novel’s protagonist, Najwa is torn between her mother’s secularism and her father’s religious fundamentalism. In her homeland, Amman, Najwa is different from many other girls of Amman because she does not wear the headscarf that represents hijab, a religious garment, in many Muslim countries. However, when she travels to Afghanistan to trace her father, Najwa meets women wearing the burqaa, a head-to-toe veil. This might be an unexpected re-consideration of this garment as a symbol of freedom because she met veiled women who are self-determined and emancipated from within. Therefore, this article sets out to explore how the novel’s protagonist re-considers the veil, home and self-discovery.
A study of domestic honeymoon tourism in Turkey
Authors: Ünal Caner , Dursun Aslıhan , Caber Meltem 
Published: October 2017

AbstractHoneymoon tourism is an important research area in tourism and travel literature because of its increasing economic importance for host destinations and their specific niche market characteristics. This study used a survey to investigate demographics, the importance of attributes in destination selection, overall satisfaction, loyalty and souvenir purchase preference amongst 540 domestic honeymoon tourists visiting Antalya, Turkey. It also identified in the context of destination marketing both domestic and international competitors of Antalya as a honeymoon destination. The results offered market-specific knowledge about honeymoon tourism in Turkey, such as the identification of the most important attributes in destination selection, tourists’ souvenir purchases, overall satisfaction and loyalties. The study concludes with a discussion of theoretical and managerial implications of the findings and recommendations for future study.
Symmetric convergence of double series whose coefficients are the quotients of divisions of complex Fourier coefficients by their indexes
Authors: Dzagnidze Omar 
Published: October 2017

Abstract
The symmetric and uniform convergence of the series

∑

|
m
|

≥
1

,

|
n
|

≥
1

1

m
⁢
n

⁢

F

m
⁢
n

⁢

e

i
⁢
m
⁢
x

,

∑

|
m
|

≥
1

,

|
n
|

≥
1

1

m
⁢
n

⁢

F

m
⁢
n

⁢

e

i
⁢
n
⁢
y

and

∑

|
m
|

≥
1

,

|
n
|

≥
1

1

m
⁢
n

⁢

F

m
⁢
n

⁢

e

i
⁢

(

m
⁢
x

+

n
⁢
y

)

\sum_{|m|\geq 1,|n|\geq 1}\frac{1}{mn}F_{mn}e^{imx},\quad\sum_{|m|\geq 1,|n|%
\geq 1}\frac{1}{mn}F_{mn}e^{iny}\quad\text{and}\quad\sum_{|m|\geq 1,|n|\geq 1}%
\frac{1}{mn}F_{mn}e^{i(mx+ny)}

on

[
0
,

2
⁢
π

]

{[0,2\pi]}

and

[
0
,

2
⁢
π

]

2

{[0,2\pi]^{2}}

is established.
These series are related to the exponential Fourier series

F
00

+

∑

|
m
|

≥
1

F

m
⁢
0

⁢

e

i
⁢
m
⁢
x

+

∑

|
n
|

≥
1

F

0
⁢
n

⁢

e

i
⁢
n
⁢
y

+

∑

|
m
|

≥
1

,

|
n
|

≥
1

F

m
⁢
n

⁢

e

i
⁢

(

m
⁢
x

+

n
⁢
y

)

F_{00}+\sum_{|m|\geq 1}F_{m0}e^{imx}+\sum_{|n|\geq 1}F_{0n}e^{iny}+\sum_{|m|%
\geq 1,|n|\geq 1}F_{mn}e^{i(mx+ny)}

of a function f which is summable on

[
0
,

2
⁢
π

]

2

{[0,2\pi]^{2}}

and

2
⁢
π

{2\pi}

-periodic with respect to each variable.
The necessary and sufficient conditions on a function f for the integral

∫
0
x

∫
0
y

f
⁢

(
t
,
τ
)

⁢

𝑑

t

⁢

𝑑
τ

{\int_{0}^{x}\int_{0}^{y}f(t,\tau)\,dt\,d\tau}

to be

2
⁢
π

{2\pi}

-periodic with respect to the variables x and y are found.
Critical global citizenship: contextualising citizenship and globalisation
Authors: Mansouri Fethi , Johns Amelia , Marotta Vince 
Published: October 2017

Abstract
This introductory paper to our first issue provides reflection on the concept of critical global citizenship at both theoretical and practical levels. We maintain that ‘citizenship’, irrespective of its level of articulation (i.e. national, international, global, etc.) remains an issue that reflects a status, a feeling and practices that are intrinsically interlinked. As a legal status, formal citizenship allows individuals to form a sense of belonging within a political community and, therefore, empowers them to act and perform their citizenship within the spatial domains of the nation-state. Critical global citizenship, asks these same individuals not so much to neglect these notions of belonging and practice to a particular locale, but to extend such affinities beyond the territorial boundaries of their formal national membership and to think critically and ethically about their local, national and global relationship with those who are different from themselves. Making a case for a critical global citizenship, however, also requires acknowledging material inequalities that affect the most vulnerable (i.e. migrants, asylum seekers, those experiencing poverty, etc.) and which mean that efforts to cultivate global citizenship orientations to address social injustice are not enacted on an even playing field. As such, a critical global citizenship approach espouses a performative citizenship that is at once democratic and ethical, as well as being aimed at achieving social peace and sustainable justice, but which is also affected by material conditions of inequality that require political solutions and commitment from individuals, states, non-governmental organisations (NGOs) and civil society organisations.
Contemporary Citizenship: Four Types
Authors: Turner Bryan S. 
Published: October 2017

AbstractThe paper begins with an examination of three ideal types citizenship which are not necessarily mutual exclusive. The first type is national citizenship, typically associated with ethno-nationalism. The second form is social citizenship or ‘welfare citizenship’ refers to the creation of social rights and is closely connected to civil-society institutions rather than to the state or market. The third form of citizenship identifies the citizen with participation in the work force emphasizing self-reliance and autonomy. In this discussion, I argue that with economic globalization and the development of neo-liberal strategies the various forms of citizenship have converged towards a new model of passive citizenship in which the state is or has withdrawn from commitment to full employment and the provision of social security, especially universal provision of welfare services, and civil-society institutions have been eroded. The result is the emergence of the apolitical,isolated citizen as consumer. The fourth model of citizenship presupposes a consumer society, a weak state and the decline of civic institutions, where the passive citizen becomes a consumer of privatized goods and services. The rise of a fourth model of citizenship – the consumer-citizen – can be interpreted as a logical consequence of financialization.
Intercultural Public Intellectual Engagement
Authors: Modood Tariq 
Published: October 2017

AbstractThe article firstly examines the different conceptions of dialogue and reason within political theory, especially in the work of Rawls. Secondly we explore multicultural political theorists who have been motivated less by abstract reasoning by a sole reasoner or identical identity-less individuals and more by dialogue. For such multiculturalists, the principles of social justice are not known in advance or simply by reason, but are arrived at by conflict and learning, by dialogue and negotiation in circumstances of inequality and minority-claims making. In response to the multiculturalists, interculturalists allege that multiculturalism is too focused on the macro and the conflictual, and dialogue should be redirected to the micro and the cooperative. Although I welcome the interculturalists’ focus on micro-relations, this does not require abandoning the idea of dialogue at the level of political controversies and public discourses. It is not an either–or choice because groups and intergroup problems exist in society and cannot be simply handled at a micro level of contact, interaction and sociability. The kind of macro-level dialogue that I am speaking of can also be understood as a form of public intellectual engagement that can contribute to societal dialogues.
The Decline and Resurgence of Turkish Islamism: The Story of Tayyip Erdoğan’s AKP
Authors: Yilmaz Ihsan , Barton Greg , Barry James 
Published: October 2017

AbstractFor decades, Turkish Islamists have failed to attract the votes of large sections of society and remained marginal. As a result of this failure to come to power, and due to domestic and international constraints and windows of opportunities, they have declared that they have jettisoned Islamism. Many Turkish Muslims whose religious disposition was shaped by the pluralistic urban Ottoman experience and small-town Anatolian traditionalism, and by the contesting currents of cosmopolitan pluralism and rural social conservatism, voted in favour of these former Islamists who have become “Muslim Democrats”. This paper elaborates on the genealogy of Turkish Islamists and their political trajectories and argues that when the forces and constraints of domestic and external social, political and economic conditions disappeared and the opportunities derived from being Muslim Democrats no longer existed, the former Islamists easily returned to their original ideology, showing that despite assertions to the contrary their respect for democracy and pluralism had not truly been internalised. This paper also aims to demonstrate that similar to other authoritarian populists, Erdoganists perceive the state and its leader as more important than anything else and as being above everything else, which has culminated in a personality cult and sanctification of the state. As long as Turkey’s economy continued to boom, almost everyone was happy that Turkey could readily market the “Muslim Democrats” story to the whole world for a long period as a major success story, or as an “exemplary Muslim country” or “model”. Yet, Middle Eastern elites and Western forces got carried away and learnt the hard way just how naive their view was in perhaps the first great transformation movement of the twenty-first century – the Arab Spring. Likewise, the Turkish Spring turned all too quickly towards autumn and then winter.
Multifractal characterization of epitaxial silicon carbide on silicon
Authors: Ţălu Ştefan , Stach Sebastian , Ramazanov Shikhgasan , Sobola Dinara , Ramazanov Guseyn 
Published: October 2017

Abstract
The purpose of this study was to investigate the topography of silicon carbide films at two steps of growth. The topography was measured by atomic force microscopy. The data were processed for extraction of information about surface condition and changes in topography during the films growth. Multifractal geometry was used to characterize three-dimensional micro- and nano-size features of the surface. X-ray measurements and Raman spectroscopy were performed for analysis of the films composition. Two steps of morphology evolution during the growth were analyzed by multifractal analysis. The results contribute to the fabrication of silicon carbide large area substrates for micro- and nanoelectronic applications.
The crystal structure (E)-4-methyl-N′-(2-nitrobenzylidene)benzenesulfonohydrazide, C14H13N3O4S
Authors: Xi-Shi Tai , Peng-Fei Li 
Published: October 2017

Abstract
C14H13N3O4S, triclinic, P1̅ (no. 2), a = 5.6735(11) Å, b = 10.509(2) Å, c = 12.180(2) Å, α = 93.76(3)°, β = 95.11(3)°, γ = 98.13(3)°, V = 713.8(2) Å3, Z = 2, R
gt(F) = 0.0446, wR
ref(F
2) = 0.1179, T = 293(2) K.