bluuebunny/crossref_metadata_2025 huggingface dataset:
Memória e identidade cultural da comida no Masterchef Brasil
Authors: Chao Adelaide Rocha de la Torre , Maia João Luis De Araújo
Published: March 2017

Observamos aqui o programa de televisão MasterChef Brasil. A partir do talent show afirmamos que a culinária se estabelece no imaginário coletivo e afetivo marcando as nossas vidas de maneira sensível através de uma narrativa que recorre às situações do passado, trazendo saudades. Observando a comida como fenômeno comunicacional, seja preparada em casa, restaurante ou em competição no programa de televisão, percebemos que as lembranças afetivas dos participantes e jurados assumem o papel de “agente socializador” nas relações de mediação e vinculação. A relação entre comida e cultura marca as identidades que a alimentação proporciona ao indivíduo e ao grupo.
Effective Debriefing Helps Achieve Learning Objectives in the Classroom
Authors: Barwani Ambreen
Published: March 2017

Learning involves making sense of whatever has been taught or experienced in the classroom (Watkins, 2009). Individual students may, in fact, interpret such experiences of learning differently and may apply this knowledge distinctly throughout their lives. Classroom activities in this regard may work as useful tools to enhance students' learning experiences through active involvement and reflective practices (Watkins, 2009). However, if whatever done in the class makes no sense to a student and is not integrated effectively with the content and students’ demographics both purpose and process of teaching and learning become ambiguous (Berman, 2004). One of the many reasons where studentslearning is said to be hampered is inadequate opportunity left for the teacher to debrief or review activities once they are done (Dennison, & Kirk, 1990). Thus, I believe, one of the ways to ensure student learning is adequate integration of pedagogy with learning objectives through reviewing and debriefing exercises.
Investing in Education: Pakistan as a Traditional Society in a Modern World
Authors: Nauman Sarwat
Published: March 2017

Developing countries have seen a direct influence of foreign players
on their educational policies. This influence of foreign players on the
Pakistani educational policy has been direct and prominent after 9/11
attacks. This paper looks into the effectiveness of money spent by the
donor nations to malign the effect of Islamization in the Pakistani
society. This research was conducted taking into consideration the
ideas that investment in the Pakistani education sector by foreign
donors have not westernized the Pakistani youth and that there is no
difference between the perception of the Pakistani youth and their
parents with regard to culture and religion. The sample selected
consisted of 120 youngsters aged between 16 to 18 years of age.
A questionnaire consisting of 17 yes/no questions was used to
collect the required data. The results from the research showed that the
family structure in Pakistan was half way between traditional and
western. There were certain things that the Pakistani youth understood
as an essential part of their lives, and there was no compromise on the
traditional values, whereas there were other things that the youth
considered less important and these were steadily disappearing from
their set of traditional values.
Analytical Study of Teacher Educators’ Metaphors of Teaching
Authors: Liaquat Sehrish , Naz Anjum
Published: March 2017

Teaching metaphor is an important phenomenon which can be used to determine teachers’ perceptions regarding their job and their workplace (Turunen, 2003). This study was aimed to explore the metaphors of junior and senior teacher educators to get insights of what teaching was for them. A comparative analysis between the junior and senior teacher educators helped to understand how these metaphors changed over time. Data for the qualitative study were collected from the districts of Sargodha, Khushab and Mianwali situated in the province of Punjab, Pakistan. Fifty teacher educators teaching at postgraduate level participated in the study and filled in the survey questionnaire. The data were coded and analysed qualitatively. Six themes emerged from the data: religious obligations, economic activities, nature compatibility, life processes, emotional affiliations, and thought provoking activities.These themes were compatible with Chen’s (2013) classification of teachers’ personal metaphors. The implications of metaphors could be used to enhance critical thinking of teacher educators to improve the quality of education.
Social Media Integration In Secondary Education In Pakistan
Authors: Ahmed Rida
Published: March 2017

This paper investigates the adequacy of social media implementation in the context of secondary education in Pakistan and highlights the importance and necessity of social media in secondary education. This research has helped in understanding the pros and cons of social media implementation in classrooms and also facilitated in analyzing whether social media helps in student learning, classroom performances, competencies and academic grow. The qualitative study paradigm was used for this research. Six phenomenological interviews were conducted from secondary school teachers.In the light of the derived results. It was concluded that social media was an essential tool that could be used to make classrooms more engaging and ethnically diverse. Results suggested that teachers spent time implementing social media in their classrooms for academic purposes and teachers used these forums for self-education and to interact with like-minded people. Social media can serve the most momentous purposes in education system as today’s digitalized world is all about the Internet and technology, and hence it becomes compulsory for the educationist to understand the importance social networking
Bloom’s Taxonomy (Cognitive Domain) in Higher Education Settings: Reflection Brief
Authors: Hyder Irfan , Bhamani Shelina
Published: March 2017

The role of taxonomy of objectives is considered to be one of the
most imperative elements in curriculum designing and drafting of
learning outcomes and objectives. Several educationists and academicians have regarded this model in facilitating learning achievement from lower level knowledge acquisition to higher order thinking. However, a few others have critiqued this phenomenon by reconnoitering its implications on segmentation of knowledge application into a hierarchical model, that may restrict learners, specifically in higher
education settings to limit their acquisition of a concept. Moreover,
students’ learning and motivation are hampered while undergoing
such an intensive, structured assessment of those learning outcomes.
This reflection brief will appraise and reflect in favour of the various
critiques established around the phenomenon of progressive Bloom’s
taxonomy and will briefly discuss the idea of reversing the level of
taxonomy in higher education settings to sustain student learning
motivation.
Employee Retention Factors: The Case of Hotels in Cape Town, South Africa
Authors: Ezeuduji Ikechukwu O , Mbane Thandokazi Lulu
Published: March 2017

High turnover of employees in the hotel sector has been widely reported in academic papers. This high turnover has associated costs, such as financial costs, inconsistency in delivering service quality, and probable loss of customer loyalty. This empirical study investigates hotel employees’ responses to statements that relate to work conditions that support employee retention. Selected three, four and five star hotels in Cape Town, South Africa participated in this study. A structured respondent-completed questionnaire was used to collect data that were subjected to descriptive, bivariate and multivariate analyses. Result highlights suggest that hotel employees, dominated by the female population, are mostly not so desperate to leave their employment soon, however not many of them have worked in the hotel for more than five years. There are positive inter-correlations among ‘employee retention’ factor and other factors that relate to work conditions that support employee retention (compensation, employee development, work engagement, work relations, and working hours). Results also show that ‘strict supervision’, ‘long working hours’ and ‘perceived unfair salary’ are the top major concerns for hotel employees. These findings will enable hotel employers address employee concerns in order to curb the high employee turnover costs. Possible comparative research in other nations and continents will help establish cultural similarities and differences among nations or continents.
The Influence of Brand Trust, Brand Familiarity and Brand Experience on Brand Attachment: A Case of Consumers in the Gauteng Province of South Africa
Authors: E Chinomona , ET Maziriri
Published: March 2017

In today’s post-modern era, brands significantly play an important role in consumer behaviour. This paper aimed at examining how brand trust, brand familiarity and brand experience have an influence on brand attachment using a sample of consumers within the Gauteng Province of South Africa. A quantitative method using Smart PLS was employed to test the relationships among the three hypotheses. A structured questionnaire consisting of validated scales for brand trust, brand familiarity, brand experience and brand attachment was administered to a sample of 181 consumers within the Gauteng province of South Africa. The results of this study showed that brand trust, brand familiarity and brand experience positively influences brand attachment in a significant and direct way. The results of this empirical study provided fruitful implications toacademicians, practitioners as well as policy makers from the perspective of academicians.This study makes a significant contribution to the brand management literature by systematically examiningthe influence of brand trust, brand familiarity and brand experience on brand attachment. On the practitioners’ side, this study therefore submits thatbrand managers for companies in the Gauteng province ought to concentrate on strategies that enhance brand experience because it is likely to yield the desired brand attachment when compared to other research constructs. The results which have been obtained from this study may also be used to generate new policies and revision of the existing policies. Precisely,policies or strategies which exist in numerous organizationsare there in order to make consumers remain attached to certain brands.Moreover, this study vastly add new knowledge to the present body of brand management literature in Africa - a context that is neglected by some academicians in developing countries.
The influence of Ghana's national culture on latent entrepreneurs: An application of Social Rule System Theory
Authors: Ansah Martin Owusu , Chinomona Richard
Published: March 2017

The impact of Ghana's national culture on its latent entrepreneurial activities are in frequently studied on - as compare to social, economic and financial influences. The current studyexamined the impact of Ghana's national culture on its latent entrepreneurs amongSmall and Medium Sized Enterprises (SMEs) from the view point of Social Rule System theory. The study employeda simple random sampling technique ineliciting251 respondents from the Business city of Kumasi in Ghana.It employedStructural Equation Modelling statistical technique (SEM) using Amos software version 22 in analysing the data. The results showed that, masculine and high power distance cultures in Ghana have significant positive effects on peoples' intention to become entrepreneurs. High uncertainty avoidance and collective cultures had positive and insignificant effects on latent entrepreneurs. Thestudy presents significant contribution to the existing academic literature on national culture and latent entrepreneurial activities. Italso brings additional step towards a fundamental means of empowering people into SMEs in any developing country. Recommendationsare also providedfor useful suggestionstogovernment and policy makers in Africa towards the improvement of Small and Medium Sized Enterprises.
Behavioural Ethics among Nurses in Midwife Obstetric Units: Patients and their Perceptions in Cape Town, South Africa
Authors: Ezeuduji Ikechukwu O. , Mdivasi Vuyokazi
Published: March 2017

A structured questionnaire survey of randomly selected 229 patients in two public hospitals (maternity wards) in Cape Town, South Africa was done to explore post-natal patients’ perceptions towards the ethical behaviour of nurses in their wards. 150 questionnaires received were usable for descriptive, correlation, and exploratory factor analysis (principal component analysis). From the results, inadequate nurses’ number, negligence on the part of the nurses, and lack of detailed information to patients are the three clear issues that need to be addressed in these public hospitals to increase patient satisfaction and retention, should they wish to give birth again. Patients’ concerns with the nurses’ ethical behaviour is related to ‘empathy’ and ‘assurance’ dimensions. The importance of these two dimensions cannot be overemphasised in medical care, globally, as they are increasingly becoming the driving forces towards patients’ satisfaction and retention. Understanding the individual needs of the patients and showing them that the nurses do care through emotive individualised attention, and acts that raise the confidence levels of patients that the nurses and the hospital will deliver safe services, are recommended.
Technology-Enhanced Knowledge Management Framework for Retaining Research Knowledge among University Academics
Authors: Rambe Patient , Mbeo Mpho Agnes
Published: March 2017

Given the challenge of retaining the research knowledge of an aging, experienced professoriate at South African Universities of Technology, institutions with a nascent tradition of scholarly research, this paper explores the feasibility of a technology-enhanced knowledge management framework for generating, sharing and retaining tacit research knowledge to leverage research outputs at the Central University of Technology (CUT), Free State, South Africa. Since digital trails of established-novice researcher interactions are left behind whenever they interact in online platforms, an examination of such interactions can provide insights into the sharing and transferring of tacit research knowledge from senior researchers to novices. This theoretical study draws on Nonaka and Takeuchi’s Theory of Organisational Knowledge Creation, an emerging technology platform, SharePoint, mainstream literature and the authors’ reflective experiences to develop a technology-enhanced knowledge management model. The paper argues that tacit knowledge can be assimilated from a comprehensive examination of the knowledge production interactions between senior academics and novices enabled by low threshold technology and collaborative sharing of content. This study’s insights are relevant to Higher Educational Institutions (HEIs) struggling to create a sustainable culture of scholarly research and grow a new generation of competent researchers amid the attrition of senior academics and the prevalence of systemic blockages in knowledge transfer processes.
The gamma exponentiated exponential-Weibull distribution
Authors: Pogány Tibor , Saboor Abdus
Published: March 2017

Anewfour-parameter model called the gamma-exponentiated exponential-Weibull
distribution is being introduced in this paper. The new model turns out to
be quite flexible for analyzing positive data. Representations of certain
statistical functions associated with this distribution are obtained. Some
special cases are pointed out as well. The parameters of the proposed
distribution are estimated by making use of the maximum likelihood approach.
This density function is utilized to model two actual data sets. The new
distribution is shown to provide a better fit than related distributions as
measured by the Anderson-Darling and Cram?r-von Mises goodness-of-fit
statistics. The proposed distribution may serve as a viable alternative to
other distributions available in the literature for modeling positive data
arising in various fields of scientific investigation such as the physical
and biological sciences, hydrology, medicine, meteorology and engineering.
Integral type fixed point theorems for α-admissible mappings satisfying α-Ψ-Φ-contractive inequality
Authors: Badehian Ziad , Asgari Mohammad
Published: March 2017

In this paper, we establishe some new fixed point theorems by ?-admissible
mappings satisfying ?-?-?-contractive inequality of integral in complete
metric spaces. Presented results can be considered as an extension of the
theorems of Banach-Cacciopoli and Branciari.
Fractional Hermite-Hadamard inequalities for differentiable s-Godunova-Levin functions
Authors: Awan Muhammad , Noor Muhammad , Mihai Marcela , Noor Khalida
Published: March 2017

In this paper, we consider the class of s-Godunova-Levin functions. We
derive a new fractional integral identity for differentiable function. Using
this new identity, we establish some new fractional Hermite-Hadamard type
inequalities for the class of differentiable s-Godunova-Levin functions.
Global behavior of a higher order rational difference equation
Authors: Abo-Zeida R.
Published: March 2017

In this paper, we derive the forbidden set and discuss the global behavior of
all solutions of the difference equation xn+1=Axn-k/B-C ?k,i=0 xn-i,
n = 0,1,... where A,B,C are positive real numbers and the initial
conditions x-k,..., x-1, x0 are real numbers.
Globalwell-posedness for a viscosity problem of the compressible Heisenberg chain equations
Authors: Huang Jinrui
Published: March 2017

In this paper, we are concerned with the existence and uniqueness of global
smooth solutions to a viscosity problem for the compressible Heisenberg
chain equations in one dimension. Furthermore, we prove the global existence
of weak solutions when the parameter A tends to zero by compactness method.
A categorical approach to convergence
Authors: Slapal Josef
Published: March 2017

We define the concept of a convergence class on an object of a given category
by using certain generalized nets for expressing the convergence. The
resulting topological category, whose objects are the pairs consisting of
objects of the original category and convergence classes on them, is then
investigated. We study the full subcategories of this category which are
obtained by imposing on it some natural convergence axioms. In particular,
we find sufficient conditions for the subcategories to be cartesian closed. We
also investigate the behavior of the closure operator associated with the
convergence in a natural way.
Certain complex equations and some of their implications in relation with normalized analytic functions
Authors: Irmak Hüseyin
Published: March 2017

The aim of the present investigation is first to reveal some nonlinear
relations between certain inequalities (constituted by normalized analytic
functions) and equations in the complex plane and then to indicate some
useful implications of them.
Four games on Boolean algebras
Authors: Kurilic Milos , Sobot Boris
Published: March 2017

The games G2 and G3 are played on a complete Boolean algebra B in ?-many
moves. At the beginning White picks a non-zero element p of B and, in the
n-th move, White picks a positive pn < p and Black chooses an in ? {0,1}.
White wins G2 iff lim inf pin,n = 0 and wins G3 iff W A?[?]? ? n?A pin,n = 0.
It is shown that White has a winning strategy in the game G2 iff White has a
winning strategy in the cut-and-choose game Gc&c introduced by Jech. Also,
White has a winning strategy in the game G3 iff forcing by B produces a
subset R of the tree <?2 containing either ??0 or ??1, for each ? ? <?2, and
having unsupported intersection with each branch of the tree <?2 belonging
to V. On the other hand, if forcing by B produces independent (splitting)
reals then White has a winning strategy in the game G3 played on B. It is
shown that ? implies the existence of an algebra on which these games are
undetermined.
The singular acyclic matrices of even order with a P-set of maximum size
Authors: Du Zhibin , da Fonseca
Published: March 2017

Let mA(0) denote the nullity of a given n-by-n symmetric matrix A. Set A(?)
for the principal submatrix of A obtained after deleting the rows and
columns indexed by the nonempty subset ? of {1,...,n}. When mA(?)(0) =
mA(0) + |?|, we call ? a P-set of A. The maximum size of a P-set of A is
denoted by Ps(A). It is known that Ps(A) ? ?n/2? and this bound is not
sharp for singular acyclic matrices of even order. In this paper, we find
the bound for this case and classify all of the underlying trees. Some
illustrative examples are provided.
An inequality for similarity condition numbers of unbounded operators with Schatten - von Neumann Hermitian components
Authors: Gil’ Michael
Published: March 2017

Let H be a linear unbounded operator in a separable Hilbert space. It is
assumed the resolvent of H is a compact operator and H ? H* is a Schatten -
von Neumann operator. Various integro-differential operators satisfy these
conditions. Under certain assumptions it is shown that H is similar to a
normal operator and a sharp bound for the condition number is suggested. We
also discuss applications of that bound to spectrum perturbations and
operator functions.
A geometric characterization of homogeneous production models in economics
Authors: Wang Xiaoshu
Published: March 2017

In this paper, we give a simple geometric characterization of homogeneous
production functions, by studying geometric properties of their associated
graph hypersurfaces. For a homogeneous production function, we prove that
its corresponding hypersurface with constant sectional curvature must be
flat. Therefore, by combining this with Chen and V?lcu?s recent results, we
obtain a new geometric characterization of homogeneous production functions
having constant return to scale.
Upper bounds for the signless Laplacian spectral radius of graphs on surfaces
Authors: Chen Xiaodan , Hou Yaoping
Published: March 2017

In this paper, we present some new upper bounds for the signless Laplacian
spectral radius of graphs embeddable on a fixed surface, which improve
several previously known results. We also give several improved upper bounds
for the signless Laplacian spectral radius of outerplanar graphs and Halin
graphs.
Completeness of 3-generalized metric spaces
Authors: Suzuki Tomonari
Published: March 2017

We discuss the completeness of 3-generalized metric spaces. Indeed, we give a
sufficient and necessary condition on that a 3-generalized metric spaces is
complete.
Sufficient conditions for a certain general class of Carathéodory functions
Authors: Xu Qing-Hua , Yang Ting , Srivastava H.M.
Published: March 2017

In the present paper, the authors derive sufficient conditions for functions to
be in a certain general class of Carath?odory functions in the open unit
disk by using the Miller-Mocanu lemma. As an application of our main result,
we deduce sufficient conditions for functions belonging to the class ST ?u?
which is introduced here. The various results presented here would
generalize and extend many known results.
Global solution to the incompressible Oldroyd-B model in hybrid Besov spaces
Authors: Zia Ruizhao
Published: March 2017

This paper is dedicated to the Cauchy problem of the incompressible Oldroyd-B
model with general coupling constant ? ?(0,1). It is shown that this set
of equations admits a unique global solution in a certain hybrid Besov
spaces for small initial data in ?Hs ??Bd/2 2,1 with - d/2 < s < d2-1.
In particular, if d ? 3, and taking s=0, then ?H0 ? ?Bd/2 2,1 = B d/2 2,1.
Since Bt2,? ? Bd/2 2,1 if t > d/2, this result extends the work by Chen
and Miao [Nonlinear Anal.,68(2008), 1928-1939].
Korovkin type approximation theorems via lacunary equistatistical convergence
Authors: Alotaibi Abdullah , Mursaleen M.
Published: March 2017

Aktu?lu and H. Gezer [Central European J. Math. 7 (2009), 558-567]
introduced the concepts of lacunary equistatistical convergence, lacunary
statistical pointwise convergence and lacunary statistical uniform
convergence for sequences of functions. In this paper, we apply the notion
of lacunary equistatistical convergence to prove a Korovkin type
approximation theorem by using test functions 1, x/1-x,(x/1-x)2.
Sensitivity functionals in convex optimization problem
Authors: Namm Robert , Woo Gyungsoo
Published: March 2017

We consider sensitivity functionals and Lagrange multiplier method for
solving finite dimensional convex optimization problem.An analysis based on
this property is also applied for semicoercive infinite dimensional
variational inequality in mechanics.
An adaptive Hager-Zhang conjugate gradient method
Authors: Babaie-Kafaki Saman , Ghanbari Reza
Published: March 2017

Based on a singular value study, lower and upper bounds for the condition
number of the matrix which generates search directions of the Hager-Zhang
conjugate gradient method are obtained. Then, based on the insight gained by
our analysis, a modified version of the Hager-Zhang method is proposed,
using an adaptive switch form the Hager-Zhang method to the Hestenes-Stiefel
method when the mentioned condition number is large. A brief global
convergence analysis is made for the uniformly convex objective functions.
Numerical comparisons between the implementations of the proposed method and
the Hager-Zhang method are made on a set of unconstrained optimization test
problems of the CUTEr collection, using the performance profile introduced
by Dolan and Mor?. Comparative testing results are reported.
Stancu-type generalizations of the Chan-Chyan-Srivastava operators
Authors: İçöz Gürhan , Çekim Bayram
Published: March 2017

We give the Stancu-type generalization of the operators which is given by
Erkus-Duman and Duman in this study. We derive approximation theorems via
A-statistical Korovkin-type result. We also give rate of convergence of the
operators via the modulus of smoothness, the modulus of continuity, and
Lipschitz class functional.
Multivalued F-contractions and related fixed point theorems with an application
Authors: Ali Muhammad , Kamran Tayyab
Published: March 2017

In this paper, we introduce the notions of ?-F-contractions, by combining the
notions of ?-?-contraction and F-contraction. Using our new notions we
obtain some fixed point theorems for multivalued mappings. As an application
we establish an existence theorem for integral equations. An example is also
constructed to show an importance of our results.
Value distribution of L-functions concerning sharing sets
Authors: Lin Peiqiang , Lin Weichuan
Published: March 2017

We use the concept of set centroid to study the value distribution of
L-functions in the (extended) Selberg class, which shows how an L-function
and a meromorphic function are uniquely determined by their two sharing
sets. The results in this paper extend Theorem 1 in Li [A result on value
distribution of L-functions, Proc. Amer. Math. Soc., 138(2010):2071-2077].
In addition, we show the accuracy of the results by giving some examples.
Curvature properties of almost Kenmotsu manifolds with generalized nullity conditions
Authors: Wang Yaning , Wang Wenjie
Published: March 2017

In this paper, it is proved that on a generalized (k,?)'-almost Kenmotsu
manifold M2n+1 of dimension 2n + 1, n > 1, the conditions of local symmetry,
semi-symmetry, pseudo-symmetry and quasi weak-symmetry are equivalent and
this is also equivalent to that M2n+1 is locally isometric to either the
hyperbolic space H2n+1(-1) or the Riemannian product Hn+1(-4)xRn.
Moreover, we also prove that a generalized (k,?)-almost Kenmotsu manifold
of dimension 2n + 1, n > 1, is pseudo-symmetric if and only if it is locally
isometric to the hyperbolic space H2n+1(-1).
Existence and stability results for random impulsive fractional pantograph equations
Authors: Anguraj A. , Vinodkumar A. , Malar K.
Published: March 2017

In this paper, we study the existence, uniqueness, stability through
continuous dependence on initial conditions and Hyers-Ulam-Rassias stability
results for random impulsive fractional pantograph differential systems by
relaxing the linear growth conditions. Finally examples are given to
illustrate the applications of the abstract results.
On removing blur in images using least squares solutions
Authors: Stanimirovic Predrag , Stojanovic Igor , Pappas Dimitrios , Chountasis Spiros , Zdravev Zoran
Published: March 2017

The further investigation of the image restoration method introduced in [19,
20] is presented in this paper. Continuing investigations in that area, two
additional applications of the method are investigated. More precisely, we
consider the possibility to replace the available matrix in the method by
the restoration obtained applying the Tikhonov regularization method or the
Truncated Singular Value decomposition method. Additionally, statistical
analysis of numerical results generated by applying the proposed improvement
of image restoration methods is presented. Previously performed numerical
experiments as well as new numerical results and the statistical analysis
confirm that the least squares approach can be used as a useful tool for
improving restored images obtained by other image restoration methods.
On some characterizations of sub-b-s-convex functions
Authors: Liao Jiagen , Du Tingsong
Published: March 2017

A new class of generalized convex functions called sub-b-s-convex functions
is defined by modulating the definitions of s-convex functions and
sub-b-convex functions. Similarly, a new class sub-bs-convex sets, which
are generalizations of s-convex sets and sub-b-convex sets, is introduced.
Furthermore, some basic properties of sub-b-s-convex functions in both
general case and differentiable case are presented. In addition the sufficient
conditions of optimality for both unconstrained and inequality constrained
programming are established and proved under the sub-b-s-convexity.
An adsorption isotherm model for adsorption performance of silver-loaded activated carbon
Authors: Yan Xue-Feng , Fan Xue-Rong , Wang Qiang , Shen Yue
Published: March 2017

The adsorption mechanism of methylene blue onto silver-loaded activated carbon fiber is different from those by Langmuir and Freundlich models. In this paper, an adsorption isotherm model is established with two parameters to describe nanosilver impact and load amount of silver nanoparticles, respectively, on adsorb-ability. In the process, the absorbance value of equilibrium solution was measured by spectrophotometry, and thus equilibrium concentrations and equilibrium adsorption quantity were calculated. The model was determined according to the fitting curve and comparison was made between the theoretical prediction and experimental data, showing relative good consistence.
A mathematical model of meta-aramid fibrid formation
Authors: Yao Li-Rong , Li Xiao-Juan , Jiang Ye-Qun , Xu Shan-Qing
Published: March 2017

Meta-aramid fibrid is a key material for aramid paper preparation. Its formation mechanism is elucidated and a mathematical model is established to reveal the main effects of coagulation properties and shear stress on the properties of aramid paper.
Analytical modelling of dry-jet wet spinning
Authors: Liu Hong-Yan , Li Zhi-Min , Yao Yan-Ju , Ko Frank
Published: March 2017

This paper introduces an analytical method for the analysis and design of a dry-jet wet spinning system. The 1-D mass conservation equation is used, and velocity distribution is assumed to derive a simple relationship among various spinning parameters. The effect of spinneret mass flow rate, solution density, spinneret structure including velocity and air-gap length, and drawing velocity on the dry-jet wet spinning was simulated using the proposed analytical model. Theoretical prediction of fiber diameter is obtained, which depends upon spinning conditions, solution properties, and spinneret structure. The theoretical results were verified by comparing experimental data with the numerical solution. It was found obviously that the theoretical prediction has comparable accuracy as that by numerical computation. The analytical model can be useful for preliminary design of a spinning process for fabrication of fibers with controllable diameter by adjusting parameters in spinning conditions.
Fluid-mechanic model for fabrication of nanoporous fibers by electrospinning
Authors: Fan Chengxu , Sun Zhaoyang , Xu Lan
Published: March 2017

A charged jet in the electrospinning process for fabrication of nanoporous fibers is studied theoretically. A fluid-mechanic model considering solvent evaporation is established to research the effect of solvent evaporation on nanopore structure formation. The model gives a powerful tool to offering in-depth physical under-standing and controlling over electrospinning parameters such as voltage, flow rate, and solvent evaporation rate.
A fractional Whitham-Broer-Kaup equation and its possible application to Tsunami prevention
Authors: Wang Yan , Zhang Yu-Feng , Liu Zhen-Jiang , Iqbal Muhammad
Published: March 2017

A fractional Whitham-Broer-Kaup equation is suggested using He?s fractional derivative to model solitary waves in shallow water in porous medium near a dam. A modification of the exp-function method, the generalized exponential rational function method, is adopted to elucidate the basic solution properties of the equation, revealing that the value of the fractional order can be used effectively to control the wave velocity, the wave height, and the wave morphology. This theoretical result can be used for possible tsunami prevention.
Numerical prediction of degree of skin burn in thermal protective garment-air gap-human body system
Authors: Tian Ming-Wei , Zhend Wang , Lin Wang , Qu Li-Jun , Chen Shao-Juan , Zhu Shi-Feng , Yu Rong-Rong , Zhao Ren-Hai , Zhao Hong-Tao
Published: March 2017

Thermal protective garment has been deemed as an important shielding against fire hazard and inflammable gas leakage. The coupling model of thermal protective garment, air-gap, and human body has been widely established, but the heat transfer in air-gap was commonly simplified, resulting in inaccurate results. This paper suggests a coupling heat transfer model of the microsystem consisting of thermal protective garment, air-gap, and human body, taking into account the heat transfer of air-gap, and human skin, its numerical solution is obtained by the finite element method. The degree of skin burn could be extracted and determined from the model, and the effect of heat source, fabric thickness, and air-gap thick-ness on the degree of skin burn are investigated.
Improved gray-encoded evolution algorithm based on chaos cluster for parameter optimization of moisture movement
Authors: Yang Xiao-Hua , Li Yu-Qi , Wang Kai-Wen , Sun Bo-Yang , Ye Yi , Li Mei-Shui
Published: March 2017

To improve computational precision for parameter optimization of the van Genuchten model in simulating moisture movement in environment protection, an improved gray-encoded evolution algorithm based on chaos cluster is proposed, in which an initial population is generated by chaotic mapping, and the searching range is automatically renewed with the excellent individuals by chaos cluster operation. Its efficiency is verified experimentally. The results indicate that the absolute error by the improved gray-encoded evolution algorithm based on chaos cluster decreases by 7.52% and 40.40%, respectively, and the relative error decreases by 12.65% and 49.95%, respectively, compared to those by the standard binary-encoded evolution algorithm, and the particle swarm optimization algorithm. Improved gray-encoded evolution algorithm based on chaos cluster has higher precision and it is good for the global optimization in the practical parameter optimization in environment system.
A modified reproducing kernel method for a time-fractional telegraph equation
Authors: Wang Yulan , Du Mingjing , Temuer Chaolu
Published: March 2017

The aim of this work is to obtain a numerical solution of a time-fractional telegraph equation by a modified reproducing kernel method. Two numerical examples are given to show that the present method overcomes the drawback of the traditional reproducing kernel method and it is an easy and effective method.
Investigation on performance of three personal cooling systems in mitigating heat strain by means of thermal manikin
Authors: Ren Chong-Guang , Zhang Cheng-Jiao
Published: March 2017

The objective of current study was to examine the effectiveness of three cooling strategies (i. e., electric air fan, evaporative cooling vest, and liquid cooling vest) in mitigating body heat strain in heat wave conditions by means of a Newton-type thermal manikin. A human thermoregulatory model was used to simulate human physiological responses while using the three cooling strategies. Two environmental conditions were selected to simulate heatwave conditions, i. e., 36 ?C, 33% relative humidity (hot-dry), 40 ?C, 27% relative humidity (extremely hotdry). A metabolic rate of 1.2 MET was selected to simulate resting person or person doing light housework. It was found that the electric air fan had cooling benefit in both environments. In addition, the evaporative cooling vest and liquid cooling vest showed similar effectiveness in mitigating body heat strain in both hot-dry or extremely hot-dry environments. Thus the evaporative cooling vest and liquid cooling vest were recommended under heatwave conditions..
An analytical thermal model for three-dimensional integrated circuits with integrated micro-channel cooling
Authors: Wang Kang-Jia , Sun Hong-Chang , Pan Zhong-Liang
Published: March 2017

An analytical thermal model is developed for N-die stacked chips with integrated micro-channels cooling. The model is implemented with some mathematical software. Comparison of the temperature predicted by the proposed model with some computer fluid dynamics software numerical results show excellent agreement, and the maximal relative error is less than 4.0%.
On varitional iteration method for fractional calculus
Authors: Wu Hai-Gen , Hu Yue
Published: March 2017

Modification of the Das? variational iteration method for fractional differential equations is discussed, and its main shortcoming involved in the solution process is pointed out and overcome by using fractional power series. The suggested computational procedure is simple and reliable for fractional calculus.
Mass transfer of Disperse Red 153 and its crude dye in supercritical CO2 fluid
Authors: Zheng Huan-Da , Zheng Lai-Jiu , Liu Miao , Su Yao-Hua , Yan Jun , Zhao Hong-Juan , Ye Fang
Published: March 2017

In this paper, polyester fibers were dyed with Disperse Red 153 and its crude dye in supercritical CO2. The effect of dyeing temperature, dyeing time, dyeing pressure, as well as auxiliaries in the commercialized Disperse Red 153 on the dyeing performance of polyester fibers was investigated. The obtained results showed that the dyeing effect of crude dye for polyester was better than that of Disperse Red 153 in the same dyeing condition. The color strength values of the dyed polyester samples were increased gradually with the increase of temperature and pressure since mass transfer of dye was improved. In addition, the mass transfer model of Disperse Red 153 in supercritical CO2 was also proposed.
Lump solutions to the (2+1)-dimensional shallow water wave equation
Authors: Ma Hong-Cai , Ni Ke , Deng Aiping
Published: March 2017

Through symbolic computation with MAPLE, a class of lump solutions to the (2+1)-D shallow water wave equation is presented, making use of its Hirota bi-linear form. The resulting lump solutions contain six free parameters, two of which are due to the translation invariance of the (2+1)-D shallow water wave equation and the other four of which satisfy a non-zero determinant condition guaranteeing analyticity and rational localization of the solutions.
An optimal thermal condition for maximal chlorophyll extraction
Authors: Fu Jia-Jia , Shen Shen , Liu Wen , Wang Hong-Bo , Gao Wei-Dong
Published: March 2017

This work describes an environmentally friendly process for chlorophyll extraction from bamboo leaves. Shaking water bath and ultrasound cleaner are adopted in this technology, and the influence of temperature of the water bath and ultrasonic cleaner is evaluated. Results indicated that there is an optimal condition for maximal yield of chlorophyll.
Problems of media ownership in Serbia
Authors: Milutinovic Irina
Published: March 2017

Different implications of media ownership on democratic capacity of Serbian
society in the beginning of the new millennium are analyzed in the paper. The
frame of the research is democratic and market model of media policy which
was established after political changes in Serbia in 2000. The aim of the
paper is to identify the main problems of media ownership in Serbia in the
process of adjustment to the European media policy. In order to understand
the genesis of marked problems, they are observed in the context of current
trends on wider - global - media market. It can be concluded that democratic
and market model of media system does not guarantee the conditions for
democratic public discussion and satisfaction of public interest.
Teaching jestastvenica in primary schools in Serbia: From 1844 until the end of the XIX century
Authors: Andjelkovic Sladjana
Published: March 2017

This paper deals with the development of teaching jestastvenica through the
analysis of curricula in primary schools in Serbia, in the period from 1844,
when the first science content appeared in primary school curriculum, until
the end of the XIX century. The analysis and critical review were based on
the following sources: laws, curricula, guidelines for teaching
jestastvenica, jestastvenica textbooks, and reports from school supervisors.
Attempts have been made to examine the development of teaching jestastvenica
and explain the changes that this development induced on teaching this
subject. Our study showed the constant presence of jestastvenica in curricula
under different names and with changes in the annual and weekly number of
teaching hours that did not follow the increase in the volume of teaching
material. Also, the analysis demonstrated that the program of jestastvenica
changed with the increase in the volume of teaching materials, introduction
of new topics, structuring of content and methodological structuring. The
study of jestastvenica curricula represents only one segment of the research
of the history of this teaching, with the aim of a comprehensive and critical
appraisal of its significance and contribution to the development of teaching
practices and education in Serbia in the XIX century.
How to teach young people morality: Lessons from China and USA
Authors: Markovic Bojana
Published: March 2017

The question of morality has always been an important issue in a society.
Furthermore, moral education is a key framework for personal development. In
the 21st century, there is an increasing issue of how to teach young people
morality. This paper presents how moral education is conducted in China and
the US, with the aim of introducing and inspecting their examples,
considering thus our moral education from another perspective and giving
suggestions how to change it and how to implement it. Moral education only
makes sense if extends throughout all levels of education, including not
merely theoretical level but also practical activities, which are
highlighted in this paper. These practical activities should not be isolated
examples of enthusiastic individuals, but a systemic solution. There is a
need for a specific curriculum for implementation of moral education in
schools through school subjects and extracurricular activities, activities
with a class teacher, charity actions, individual rewards, competitions in
motivational speeches or essays about morality, and so on. Briefly, it is
necessary that morality becomes an integral part of everyday life both in
school and out of it.
Stress-strain Analysis of Premolars With Non-carious Cervical Lesions: Influence of Restorative Material, Loading Direction and Mechanical Fatigue
Authors: Machado AC , Soares CJ , Reis BR , Bicalho AA , Raposo LHA , Soares PV
Published: March 2017

Noncarious cervical lesions (NCCLs) are characterized by a loss of dental structure at the cementoenamel junction (CEJ) caused by stress, biocorrosion, and attrition. Variations in occlusal loading can promote different stress and strain patterns on the CEJ. Restoration of NCCLs is part of lesion management; however, there is still no conclusive restorative protocol for NCCLs. This study aimed to evaluate the stress and strain distribution of maxillary premolars with NCCLs according to three factors: 1) restorative technique; 2) direction of occlusal loading; and 3) mechanical fatigue. Three-dimensional (3D) finite element analysis (FEA) and strain gauge testing were used to assess stress and strain, respectively. 3D-FEA orthotropic, linear, and elastic models were generated: sound tooth (SO); unrestored NCCL; or NCCL restored with glass ionomer; flowable composite resin; nanofilled composite resin (CR); lithium disilicate ceramic; and nanofilled composite resin core associated with a lithium disilicate laminate (CL). A 150-N compressive static load was applied in two conditions: axially in both cusps (Al); and at a 45° angle to the long axis of the tooth applied to the palatine cusp (Ol). For the experimental tests, specimens were treated as described previously, and one strain gauge was attached to the buccal surface of each tooth to record tooth strains before and after cyclic loading (200,000 cycles, 50 N). FEA showed that the association of NCCL and Ol resulted in higher stress values. CR and CL restorations showed the closest biomechanical behavior to SO for both loading types. Loaded Al or Ol specimens showed higher strain values after mechanical fatigue. Lower stress and strain were observed with Al when compared with Ol. The restoration of NCCLs with composite resin only or associated with ceramic laminates seems to be the best approach because the results for those groups were similar in biomechanical behaviors to sound teeth.
MENGAPA WAJIB PAJAK MENGIKUTI TAX AMNESTY (STUDI KASUS DI SOLO)
Authors: Setyaningsih Titik , Okfitasari Antin
Published: March 2017

Tax amnesty program was obtain to apply Republic Indonesia government regulation number 11 year 2016. The present study aims at providing why do tax payers take tax amnesty. This study used Case Study Research approach. A single case study approach was choosen because one data was enough to achieve the research objective. Data were gathered by questionnaire and semi-structured interview with tax payers in Solo Raya. The finding shows that comprehension of tax amnesty only can be understood three of tax payers, they take tax amnesty program by working together with tax consultant, and the problems are for arranging technical and minim for socialization become obstruction of tax amnesty realization. The limitation of this research is not using comparative case study. In addition, this research timming is limited. However this research raises the higher of leader or personal commitment to do tax amnesty program with the hope by increasing regular tax amnesty socialization, simplification of procedure tax amnesty for small business tax payers, also if tax amnesty results, the tax money, actually were used for public wealthy.
PENERAPAN TEORI GRAF UNTUK MENYELESAIKAN MASALAH MINIMUM SPANNING TREE (MST) MENGGUNAKAN ALGORITMA KRUSKAL
Authors: Rizki Swaditya
Published: March 2017

One of useful graph theory to solve the real problems is Minimum Spanning Tree (MST). MST is network optimization problems that can be applied in many fields such as transportations problems and communication network design (Gruber and Raidl, 2005). MST begins from tree namely a connected graph has no circuits. From the graph, there is a sub-graph that has all the vertex or spanning tree. If that graph has the weight/cost, then the spanning tree that has the smallest weight/cost is called Minimum Spanning Tree. Basic algorithm used to determine the MST is Kruskal’s algorithm. This algorithm is known as one of the best algorithms for the optimization problems, especially for MST. In this paper is developed a source code program to determine MST using Kruskal’s algorithm and then implemented on several data representing a complete graph.