bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pullback attractors for the non-autonomous complex Ginzburg–Landau type equation with p-Laplacian
Authors: Li Fang , You Bo 
Published: April 2016

In this paper, we are concerned with the long-time behavior of the non-autonomous complex Ginzburg–Landau type equation with p-Laplacian. We first prove the existence of pullback absorbing sets in L2(Ω)∩W01,p(Ω)∩Lq(Ω) for the process {U(t,τ)}t⩾τ corresponding to the non-autonomous complex Ginzburg–Landau type equation with p-Laplacian. Next, the existence of a pullback attractor in L2(Ω) is established by the Sobolev compactness embedding theorem. Finally, we prove the existence of a pullback attractor in W01,p(Ω) for the process {U(t,τ)}t⩾τ by asymptotic a priori estimates.
Modelling of catalytic reactivity of inhomogeneous surfaces in monomer-monomer reactions
Authors: Skakauskas Vladas , Katauskis Pranas 
Published: April 2016

The kinetics of a A1 + A2 -> A1A2 reaction on inhomogeneous surfaces with continuously distributed adsorption sites is investigated numerically using two phenomenological models. One of them includes: the bulk diffusion of reactants from a bounded vessel towards the adsorbent and the product bulk one from the adsorbent into the same vessel, adsorption and desorption of molecules of both reactants, and surface diffusion of adsorbed and product particles before their desorption. The other model describes surface reaction provided that concentrations of both reactants at the surface are given. Both models are based on the Langmuir–Hinshelwood reaction mechanism coupled with the Eley–Rideal step. Two surface diffusion mechanisms are used. According to one of them, the diffusion flux of the adsorbed and product particles is described by the standard Fick law, while in the other one the surface diffusion flux is based on the particle jumping into a nearest vacant adsorption site. Simulations were performed using the finite difference technique. The kinetic rate constants, Eley–Rideal steps, and surface diffusion mechanisms influence on the catalytic reactivity of surf aces is studied.
Common fixed point theorems via common limit range property in symmetric spaces under generalized Phi-contractions
Authors: Nashine Hemant Kumar Kumar , Kadelburg Zoran 
Published: April 2016

The aim of this paper is to use common limit range property for a quadruple of non-self mappings for deriving common fixed point results under a generalized Φ-contraction condition in symmetric spaces. Some examples are given to exhibit different types of situations where these conditions can be used and to distinguish our results from the known ones. As an application, an existence result for certain systems of integral equations is presented.
Anti-periodic solution for fuzzy Cohen–Grossberg neural networks with time-varying and distributed delays
Authors: Li Yongkun , Yang Li , Wu Wanqin 
Published: April 2016

In this paper, by using a continuation theorem of coincidence degree theory and a differential inequality, we establish some sufficient conditions ensuring the existence and global exponential stability of anti-periodic solutions for a class of fuzzy Cohen–Grossberg neural networks with time-varying and distributed delays. In addition, we present an illustrative example to show the feasibility of obtained results.
Numerical investigation and recurrence plot analysis of pulsating magnetohydrodynamic mixed convection over a backward facing step
Authors: Selimefendigil Fatih 
Published: April 2016

In the current study, numerical investigation of pulsating magnetohydrodynamic mixed convection over a backward facing step is carried out for the range of parameters; Reynolds number (25 ⩽ Re ⩽ 100), Hartmann number (0 ⩽ Ha ⩽ 60), Strouhal number (0.1 ⩽ St ⩽ 1) and Gr number is kept at Gr = 104. The governing equations are solved with a general purpose finite element based solver. The effects of various parameters on the fluid flow and heat transfer characteristics are numerically studied. It is observed that the flow field and heat transfer rate are influenced by the variations of Reynolds, Hartmann and Strouhal numbers. Furthermore, recurrence plot analysis is applied for the analysis of the time series (spatial averaged Nusselt number along the bottom wall downstream of the step) and for a combination of different parameters, the systems are identified using recurrence quantification analysis parameters including recurrence rate, laminarity, determinism, trapping time and entropy.
Projection error evaluation for large multidimensional data sets
Authors: Paulauskienė Kotryna , Kurasova Olga 
Published: April 2016

This research deals with projection error evaluation for large data sets using only a personal computer without any particular technologies for high performance computing. A shortcoming of basic projection error calculation ways is such that they require a large amount of computer memory or computation time is not acceptable when large data sets are analyzed. This paper proposes two ways for projection error evaluation: the first one is based on calculating the projection error for not full data set, but only for representative data sample, the second one obtains the projection error by dividing a data set into the smaller data sets. The experiments have been carried out with twelve real and artificial data sets. The computational efficiency of the projection error evaluation ways is confirmed by a comprehensive set of comparisons. We demonstrate that dividing data set into the smaller data sets allows us to calculate the projection error for large data sets.
Apie filosofiją. Dorotėjai
Authors: Schlegelis Friedrichas 
Published: April 2016

Grynas gyvenimas vien dėl paties gyvenimo yra tikrasis menkystės šaltinis, ir visa yra menka, kas neturi visiškai nieko iš filosofijos ir poezijos pasaulio dvasios. Jos vienos yra pilnatviškos ir gali visus atskirus mokslus bei menus persmelkti ir sujungti į visumą. Tik jose paskiras kūrinys gali apimti pasaulį ir tik apie jas galima teigti, kad visi jų kada nors sukurti kūriniai yra vienos sąrangos dalys. [...]
An information search model for online social Networks - MOBIRSE
Authors: Niño Zambrano Miguel Angel , Cerón Moreno Iván Darío , Astaiza Perafán Jhon Alberto , Ramírez Gustavo Adolfo 
Published: April 2016

Online Social Networks (OSNs) have been gaining great importance among Internet users in recent years. These are sites where it is possible to meet people, publish, and share content in a way that is both easy and free of charge. As a result, the volume of information contained in these websites has grown exponentially, and web search has consequently become an important tool for users to easily find information relevant to their social networking objectives. Making use of ontologies and user profiles can make these searches more effective. This article presents a model for Information Retrieval in OSNs (MOBIRSE) based on user profile and ontologies which aims to improve the relevance of retrieved information on these websites. The social network Facebook was chosen for a case study and as the instance for the proposed model. The model was validated using measures such as At-k Precision and Kappa statistics, to assess its efficiency.
Protocol adaptations to conduct Systematic Literature Reviews in Software Engineering: a chronological study
Authors: Sepúlveda Samuel , Cravero Leal Ania 
Published: April 2016

<div class="page" title="Page 1"><div class="section"><div class="layoutArea"><div class="column"><p><span>Systematic literature reviews (SLR) have reached a considerable level of adoption in Software Engineering (SE), how-ever protocol adaptations for its implementation remain tangentially addressed. This work provides a chronological framework for the use and adaptation of the SLR protocol, including its current status. A systematic literature search was performed, reviewing a set of twelve articles being selected in accordance with the inclusion and exclusion criteria between 2004 and 2013, using digital data sources recognized by the SE community. A chronological framework is provided that includes the current state of the protocol adaptations to conduct SLR in SE. The results indicate areas where the quantity and quality of investigations needs to be increased and the identi- fication of the main proposals providing adaptations for the protocol conducting SLR in SE. </span></p></div></div></div></div>
New digital demodulator with matched filters and curve segmentation techniques for BFSK demodulation: Analytical description
Authors: Torres Gómez Jorge , Hernández Fidel , Habermann Joachim 
Published: April 2016

<p class="Abstractandkeywordscontent">The present article relates in general to digital demodulation of Binary Frequency Shift Keying (BFSK). The objective of the present research is to obtain a new processing method for demodulating BFSK-signals in order to reduce hardware complexity in comparison with other methods reported. The solution proposed here makes use of the matched filter theory and curve segmentation algorithms. This paper describes the integration and configuration of a Sampler Correlator and curve segmentation blocks in order to obtain a digital receiver for a proper demodulation of the received signal. The proposed solution is shown to strongly reduce hardware complexity. In this part a presentation of the proposed solution regarding the analytical expressions is addressed. The paper covers in detail the elements needed for properly configuring the system. In a second part it is presented the implementation of the system for FPGA technology and the simulation results in order to validate the overall performance.</p><br /><div id="__if72ru4sdfsdfruh7fewui_once" style="display: none;"> </div><div id="__hggasdgjhsagd_once" style="display: none;"> </div>
Against Relativism. The Importance of Truth in the Ethics of St. John Paul II
Authors: Probucka Dorota 
Published: April 2016

The main aim of the paper is the analysis and critique of axiological relativism, typical of contemporary Western culture. Its supporters deny the objective status of moral norms and values. Axiological relativism leads to moral indifference based on blurring the difference between good and evil, and negating the belief that human action may be morally better or worse. I present the anti­‑relativistic position of St. John Paul II, particularly in relation to the truth, understood as a cognitive and moral value. According to the Pope, a civilization based on the belief of the relative nature of good and evil leads to widespread hypocrisy and is destined to a slow decline.
Civitas antigua y formación de las estructuras personales
Authors: Kantor Robert 
Published: April 2016

The concept of the city (civitas) does not necessarily have to mean an urban organization. It may mean a collection of localities, or a territory where some ethnic groups live (tribu). First of all, the development of personal structures happened initially in the families and was connected with a domestic cult. With time, several families used to make a separate group called fratria and a collection of them made up a tribu. This article shows how religion and a way of ruling affected the development of personal structures. Examples of this include are colonies and dioceses – personal structures of the Roman Empire.The task which lies before this article is to enlighten the reader that many of the modern personal structures, especially those deep­‑rooted in canon law, have had a source in ancient civitas. Present structures of Catholic Church have their basis on that original classification: a family, fratria, tribu. Today there exist: a parish, a vicariate forane, a diocese, and a collection of dioceses called an ecclesiastical province.
Transition to Parenthood and Susceptibility to Divorce: qualitative research of divorced young parents in Slovenia
Authors: Rijavec Klobučar Nataša 
Published: April 2016

Transition to parenthood is a vulnerable period for spouses and can consequently lead to the disintegration of their relationship. The purpose of this research was to examine the experience of this transition, circumstances and risk factors for divorce from the perspective of divorcees in Slovenia who divorced in the first year of their child’s life. On the basis of semi­‑structured interviews with 15 divorcees, the findings of studies examining changes after the birth of a child were confirmed. The results pointed to risk factors for marriage, such as uncertain relationship between spouses prior to the childbirth, permeable boundaries in relations with families of origin, lack of practical and emotional support, and unreal expectations. The child’s arrival accentuates unsolved issues from the past and brings additional vulnerability to the relationship. The findings of this research are a contribution to the development of preventive, educative and therapeutic programmes for couples in transition to parenthood.
MORE CHANGES: Impact of SAPS restructuring on public order policing
Authors: Omar Bilkis 
Published: April 2016

The effect of the pending South African Police Services (SAPS) restructuring process has raised concerns about the future of specialised policing units, including the Area Crime Combating Units (ACCUs). The concerns relate to the fact that these units may lose their specialist abilities and become overburdened, ultimately leading to the end of the units in their current form. Considering that the trends show an increase in the number of public protests over time, it could be argued that the proposed changes may not be in the country’s best interests. This article considers the implications of the proposed SAPS restructuring on the ACCUs.
POLICE AS WORKERS: Police labour rights in Southern Africa and beyond
Authors: Marks Monique , Fleming Jenny 
Published: April 2016

Efforts by police organisations to unionise and to increase their social and labour rights is an international phenomenon, and one that is becoming more vigorous in the Southern African region. However, many governments are wary of police unions and limit their rights, or refuse to recognise them at all. This gave impetus to the formation of the International Council of Police Representative Associations (ICPRA), in September 2006. Two of ICPRA’s aims are to assist and advise police unions all over the world and to provide the international police union movement with a voice for influencing policing futures. In South Africa, the Police and Civil Rights Union (POPCRU) is assisting police in the subregion and has become a symbol of what is possible for police even in repressive states. In a rapidly changing police labour environment, police unions have the capacity to confront existing (undemocratic) occupational cultures, to promote organisational accord and to forge positive reform.
Worrying trends: The official 2008/09 South African crime statistics
Authors: Burger Johan 
Published: April 2016

The South African Police Service (SAPS) released the official crime statistics for 2008/2009 on 22 September 2009. As usual the statistics drew huge media and public interest. This article provides an overview of the key trends and offers an analysis of the statistics. Key trends include that the overall crime rate, after a five-year respite in which there was a downward trend, is on the increase; as are the so-called 'trio crimes' (house robberies, business robberies and car hijackings) and truck hijackings. This article briefly considers the controversy around the validity of the police's crime statistics and notes a few lessons from Colombia.
CASE NOTE: Illegal sales of alcohol and asset forfeiture
Authors: Ngidi Karabo 
Published: April 2016

The Constitutional Court recently confirmed an order for the forfeiture of a house from which an unlawful shebeen had been run for years (Van der Burg and Another v National Director of Public Prosecutions).In deciding whether to confirm the order of the full bench of the High Court, Justice van der Westhuizen, writing for a unanimous court, addressed the following questions: whether the house was an instrumentality of an offence; whether the illegal sale of alcohol is an organised crime; the proportionality of the crime to the forfeiture under the Prevention of Organised Crime Act 121 of 1998 (the POCA); as well as the impact of the forfeiture on the rights of the children that lived in the house. This judgment comes at a time where issues such as the proposal for the reduction of the legal limit of alcohol for drivers to 0%2 are topical, and seems to point to a tougher stance towards the sale and consumption of alcohol in South Africa. The judgment may therefore be seen as a warning that the illegal sale of alcohol and running of a shebeen will no longer be seen as business as usual in cases where the seller does not heed the call to desist such business.
Twenty years of punishment (and democracy) in South Africa: The pitfalls of governing crime through the community
Authors: Super Gail 
Published: April 2016

This article examines how the ideology of ‘community’ is deployed to govern crime in South Africa, both by marginalised black communities and by the government. Although the turn to ‘community’ started under the National Party government in the late 1970s, there is no doubt that as a site, technology, discourse, ideology and form of governance, ‘community’ has become entrenched in the post-1994 era. Utilising empirical data drawn from ethnographic research on vigilantism in Khayelitsha, as well as archival materials in respect of ANC policies and practices before it became the governing party, I argue that rallying ‘communities’ around crime combatting has the potential to unleash violent technologies in the quest for ‘ethics’ and ‘morality’. When community members unite against an outsider they are bonded for an intense moment in a way that masks the very real problems that tear the community apart. Because violent punishment is one of the consequences of the state’s turn towards democratic localism, we should question the way in which the ‘community’ is deployed as a tool of crime prevention, and subject it to rigorous scrutiny.
Reconstruction of Extensive Bucco‐Palatal Defects Using Twin Block Grafts: A Clinical Report of the Sandwich Technique in Two Cases
Authors: Kulkarni Sudhindra S. , Thakur Srinath L. , Kamath Sujatha S. 
Published: April 2016

Introduction: Three‐dimensional alveolar ridge defects in the anterior maxilla necessitate bone augmentation before implant placement. Bone volume, contour, and the overlying soft tissue form have to be optimized for an ideal outcome. A large three‐dimensional defect needs osteogenic bone to predictably reconstruct the defect. Autogenous bone in the form of block and particulate is the graft of choice in such situations.Case Series: Two cases are presented here with severe three‐dimensional alveolar ridge deficiency in the maxillary right lateral incisor and maxillary canine areas, respectively. Both cases had a three‐dimensional bone and contour deficiency. Restorative‐driven positioning of the implant necessitated augmentation of the buccal and palatal aspects of the defects. The defects were grafted with autogenous corticocancellous bone blocks harvested from the mandibular symphysis. In both sites, one block was placed on the buccal side and the other on the palatal side, “sandwiching” the host bone and the remainder of the gap filled with particulate autogenous bone. Implants were placed in both cases 5 months after the grafting, and the final restorations were placed 5 months subsequently. The implants and the grafts successfully integrated at the sites with stable bone and soft tissue levels. At the 3‐year follow‐up, both implants showed stable bone and soft tissue levels.Conclusion: Autogenous corticocancellous block grafts used in a sandwich technique reconstructed the lost bone volume, but also facilitated implant placement and optimal restorative outcomes.
USO DE DIN&Acirc;MICA DE SISTEMAS PARA AVALIA&Ccedil;&Atilde;O DE CEN&Aacute;RIOS DE REAPROVEITAMENTO DE &Oacute;LEO DE COZINHA NA PRODU&Ccedil;&Atilde;O DE BIODIESEL EM UMA IES P&Uacute;BLICA
Authors: Rizzetti Tiago Antônio , Rizzetti Tiago Antônio , Rodrigues Glauco Oliveira , Rodrigues Glauco Oliveira , Simonetto Eugênio de Oliveira , Gil Rodrigo Castro 
Published: April 2016

O artigo apresenta a modelagem e desenvolvimento de um modelo de simulação para avaliar a produção de biodiesel a partir do reaproveitamento do óleo de cozinha utilizado nos restaurantes Universitários (RUs) de uma IES pública. Para a construção do modelo (definição de variáveis e suas inter-relações) utilizou-se por base teórica as pesquisas bibliográficas e observações do processo da geração dos resíduos pós-uso do óleo de cozinha. Dentre os aspectos analisados está a redução do impacto ambiental, em função da redução do descarte inadequado do óleo de cozinha, e da redução na geração de CO2 ocasionada pelo uso do biodiesel. Para avaliar as possibilidades de geração e reaproveitamento do óleo do RU na produção do biodiesel, gerou-se dois cenários: um cenário baseado na situação atual de geração do resíduo e, outro, denominado cenário futuro com melhores práticas de reaproveitamento e reciclagem desse. Os resultados obtidos através da simulação demonstram que além da grande redução do impacto ambiental, o processo de reciclagem traz um significativo ganho econômico em função da redução de custos com a aquisição de combustível. O horizonte de tempo simulado foi de 10 (dez) anos e foi utilizado o software Vensim para o desenvolvimento da simulação.