bluuebunny/crossref_metadata_2025_split huggingface dataset:
Stress Reduction of Amorphous Silicon Deposited by PECVD
Authors: Pérez César B. , Reyes-Betanzo C. 
Published: March 2016

ABSTRACTAmorphous silicon (α-Si) was deposited on glass substrates by PECVD at different deposition conditions in order to characterize the residual stress on the film. Subsequently, a thermal-annealing was applied for different times at 400 °C in a N2 atmosphere, aiming to reduce the stress in the films. The deposition power was between 15 and 30 W at 13.56 MHz, the pressure in the chamber was adjusted in a range from 600 to 900 mTorr, and the temperature was varied from 140 to 200 °C. The stress was determined by using the Stoney equation, measuring the curvature and thickness of the α-Si films with a stylus profilometer. A deposition rate between 7-24 nm/min was obtained, and the time for thermal-annealing needed to reduce the stress was reduced from 10 to 2-4 h, obtaining a minimum compressive stress of 17 MPa. With this value of stress, it was possible to use the α-Si as masking material for wet etching of glass during the manufacturing of microfluidic devices, in order to obtain microstructures in the glass with 150 μm in depth.
Characterization of Residual Stress in a-SiC:H Deposited by RF-PECVD for Manufacturing of Membranes for Cell Culture
Authors: Gelvez- Lizarazo O. , Reyes-Betanzo C. 
Published: March 2016

ABSTRACTHydrogenated amorphous silicon carbide (a-SiC:H) was deposited by radiofrequency-plasma enhanced chemical vapor deposition (RF-PECVD) on monocrystalline silicon substrates with different process parameters in order to analyze the residual stress, and the roughness and uniformity of the films, which are the most important characteristics in the production of membranes for cell culture. The residual stress was calculated using Stoney's equation by measuring the thicknesses of the substrate and the deposited film, in addition to the radius of curvature of the substrate with and without deposited material. From the results it was observed that as power increases from 15 to 30 W, the residual stress increases from -180 to -400 MPa. Even at low power, the residual stress is high. However, an annealing process at 450 °C in N2 atmosphere significantly reduces the residual stress to 7 MPa. It was found that the film uniformity increases when the pressure rises in the process chamber from 450 to 900 mTorr. Finally, the RMS roughness (0.7 to 5.1 nm) can be controlled by the power and pressure, allowing us to obtain a material with excellent morphological characteristics for the adherence and growth of specific cells.
Experimental Determination of Continuous Cooling Transformation Diagrams of Hot-Rolled Heat Treatable Steel Plates Using Quenching Dilatometry
Authors: Altamirano-Guerrero Gerardo , Gutiérrez-Castañeda Emmanuel J. , García-Rincón Omar , Salinas-Rodríguez Armando 
Published: March 2016

ABSTRACTThis article outlines the use of quenching dilatometry in phase transformation kinetics research in steels under continuous cooling conditions. For this purpose, the phase transformation behavior of a hot-rolled heat treatable steel was investigated over the cooling rate range of 0.1 to 200 °C/s. The start and finish points of the austenite transformation were identified from the dilatometric curves and then the continuous cooling transformation (CCT) diagrams were constructed. The experimental CCT diagrams were verified by microstructural characterization using scanning electron microscopy (SEM) and Vickers micro-hardness. In general, results revealed that the quenching dilatometry technique is a powerful tool for the characterization and study of solid-solid phase transformations in steels. For cooling rates between 200 and 25 °C/s the final microstructure consists on plate-like martensite with the highest hardness values. By contrast, a mixture of phases of ferrite, bainite and pearlite predominated for slower cooling rates (10-0.1 °C/s).
Biopolymers as Novel Tool for Self-Sealing and Self-Healing of Mortar
Authors: Mignon Arn , Dubruel Peter , Van Vlierberghe Sandra , De Belie Nele 
Published: March 2016

ABSTRACTSynthetic superabsorbent polymers (SAPs) are used in concrete for various applications such as internal curing and frost resistance. However, the addition of these SAPs may lead to a significant decrease in mortar strength, especially when high amounts of SAP are necessary. This is the case for example when self-sealing and -healing of cracks is strived at. In order to overcome this bottleneck, the present work focuses on the application of biopolymers as SAPs. The work especially aims to evaluate the potential of both sodium alginate (NaAlg) as well as physically cross-linked calcium alginate (CaAlg) as SAPs to establish a sustainable approach towards self-sealing and -healing concrete without impairing mechanical strength. First, the swelling properties in both demineralized water and cement filtrate solution are tested. Subsequently, the mechanical properties of mortar mixtures in the absence and the presence of SAPs are compared by performing flexural and compressive tests. The alginates show a swelling capacity up to 72 times their own weight in aqueous solutions. Interestingly, they lead to a minor reduction in compression strength (up to 15% upon addition of 1m% SAP). These biopolymers show high potential for enabling concrete repair, more specifically, for the self-sealing and -healing of cracks without impairing the strength.
Augmented Reality Cubes for Cognitive Gaming: Preliminary Usability and Game Experience Testing
Authors: Boletsis Costas , McCallum Simon 
Published: March 2016

Early detection is important in dementia care; however, cognitive impairment is still under-recognised and under-diagnosed. Cognitive screening and training are two important preventative treatments, which can lead to early detection of cognitive decline. In this work, the “Cognitive Augmented Reality Cubes” (CogARC) system is presented, i.e. a serious game for cognitive training and screening, utilising an interaction technique based on Augmented Reality and the manipulation of tangible, physical objects (cubes). The game is a collection of cognitive mini-games of preventative nature and is, primarily, targeting elderly players (≥60 years old). A preliminary testing was conducted focusing on the game experience that CogARC offers (utilising the In-Game Experience Questionnaire), the usability of the system (using the System Usability Scale), and the specific user observations and remarks, as documented by open, semi-structured interviews. Overall, CogARC demonstrated satisfying positive responses, however, the negative reactions indicated that there are specific problems with aspects of the interaction technique and a number of mini-games. The open interview shed more light on the specific issues of each mini-game and further interpretation of user interactions. The current study managed to provide interesting insights into the game design elements, integration of Augmented Reality, tangible interaction of the system, and on how elderly players perceive and use those interaction components.
O TRIBUNAL DO FEICEBUQUI E A PÁGINA ABERTA PARA A OPRESSÃO
Authors: Thürler Djalma , Woyda Duda 
Published: March 2016

A partir de uma performance realizada nos festejosde Iemanjá, em Salvador, e com base nos estudosPós-Coloniais, Queer e Subalternos, os autores analisam,de forma interdisciplinar, como a rede socialFacebook vem se tornando um tribunal inquisitóriocontemporâneo.
Constitucionalismo dirigente no Brasil: em busca das promessas descumpridas
Authors: Moreira Nelson Camatta 
Published: March 2016

Propõe, no texto subsequente, como condição fundante de um projeto estruturador de um constitucionalismo-dirigente "à moda brasileira", a necessária construção hermenêutica de um paradigma jurídico pautado por uma ética includente (oposta ao modelo neoliberal globalizante), com uma concepção de reconhecimento extensiva a todos os membros da comunidade política. Para tanto, num primeiro momento, é necessário que se reconheça a carga valorativa da ordem constitucional brasileira. Em seguida, aborda o projeto dirigente que esta ordem sugere como contribuição para a afirmação da dignidade humana no Brasil. Por fim, enfrenta o problema da ausência de um sentimento constitucional capaz de fomentar o projeto dirigente e, consequentemente, a efetivação do texto de 1988.
Experience with a Massive Open Online Course in Rural Rwanda
Authors: Warugaba Christine , Naughton Brienna , Gauthier Bethany Hedt , Muhirwa Ernest , Amoroso Cheryl L 
Published: March 2016

<p class="Style2">The growing utilization of massive open online courses (MOOCs) is opening opportunities for students worldwide, but the completion rate for MOOCs is low (Liyanagunawardena, Adams, &amp; Williams, 2013). Partners In Health (PIH) implemented a “flipped” MOOC in Rwanda that incorporated in-class sessions to facilitate participant completion.</p><p class="Style2">In October 2013, PIH invited its employees, as well as those at the Ministry of Health, to participate in an online MOOC. Each site had at least one volunteer facilitator who accompanied participants throughout the course by providing course materials and facilitating the understanding of the online material during the weekly class sessions. Following the conclusion of the course, all participants were asked to complete an online survey.</p><p class="Style2">A total of 38 out of 62 registered participants completed the survey and of these 38 participants, 20 (52.6%) successfully finished the course. The number of in-person sessions attended was significantly associated with course completion (<em>p </em>&lt; 0.05), and 85% who successfully completed the course attended at least three of seven sessions. Sixteen (80%) participants believed that the completion of this course would help them with career advancement. Half of the participants (19 of 38, 50%) were employed with a position related to research. Other job titles included the following: nurses (4 of 38, 10.5%), a pharmacist (1 of 38, 2.6%), a clinical psychologist (1 of 38, 2.6%), a dentist (1 of 38, 2.6%), and others (10 of 38, 26.3%). The job title was not significantly related to course completion.</p><p class="Style2">Our experience, with a completion rate of over 50%, yields several lessons for incorporating MOOCs into capacity-building programs to leverage the potential of online learning in resource-limited areas.</p>
Comparative Analysis of Pedagogical Strategies Across Disciplines in Open Distance Learning at UnisaODL at Unisa
Authors: Ramdass Kemlall , Masithulela Fulufhelo James 
Published: March 2016

<p class="Style2">Re-engineering technological strategies in teaching and learning in an open distance learning (ODL) environment is paramount as the demand for access to quality higher education escalates drastically on a year to year basis. The organisational framework requires change in order to accommodate the increasing number of students. In view of the changing higher education landscape and the increase in the number of students qualifying for higher education acceptance, open distance education has been opened to residential institutions. Despite the fact that demands is greater than supply in the higher education sector, the University of South Africa (Unisa), in reaction to the “competitive threat,” has embarked on the re-evaluation of ODL as a component of its teaching and learning methodology. Unisa focussed on its pedagogical approaches as a primary means of maintaining its competitive edge. The challenges in the higher education sector are also attributed to the basic education sector that does not prepare students sufficiently for higher education. ODL, if applied appropriately, could be a strategy to address the issues of access, equality, and equity in a democratic South Africa. Pedagogical strategies that are functional and appropriate need to be applied in the higher education sector. Hence the research question is to determine what ODL strategies can be implemented to ensure that students are on par with traditional universities. Therefore, this paper explores the pedagogical strategies that colleges may use with the intent to improve delivery of teaching and learning in an ODL environment.</p>
Telaah Historis Perkembangan Orientalisme Abad XVI-XX
Authors: Khaldun Rendra 
Published: March 2016

Studies on relationship between West and Islam are still important to do till the recent times. The two cultures have been interacting one another for long time and will always do so in the future. To some Muslims point of view, West (Christianity) and East (Islam) become “eternal enemy” to each other. It can be traced in many biased view of orientalist about Islam and Muslims’ hatred against them. In this article I explore background of Islamic studies taken by orientalists. At first, orientalists transformed knowledge from Islam world to West through translating Muslim works into Western languages. As effect of Crusade 1, some orientalists do Islamic studies in order to criticize and weaken Islam through their misinterpretation and negative description about Islam. The come of Enlightenment turned some orientalits’ views on Islam into more neutral and likeable to Muslim. Their motivation to study Islam is only for the sake of knowledge development.
Studies on relationship between West and Islam are still important to do till the recent times. The two cultures have been interacting one another for long time and will always do so in the future. To some Muslims point of view, West (Christianity) and East (Islam) become “eternal enemy” to each other. It can be traced in many biased view of orientalist about Islam and Muslims’ hatred against them. In this article I explore background of Islamic studies taken by orientalists. At first, orientalists transformed knowledge from Islam world to West through translating Muslim works into Western languages. As effect of Crusade 1, some orientalists do Islamic studies in order to criticize and weaken Islam through their misinterpretation and negative description about Islam. The come of Enlightenment turned some orientalits’ views on Islam into more neutral and likeable to Muslim. Their motivation to study Islam is only for the sake of knowledge development.
Peran Pengelola Radio Komunitas dalam Mengembangkan Siaran Kearifan Lokal
Authors: Hasandinata Neti Sumiati 
Published: March 2016

Facing the wave of globalization, community radio as broadcast industry with local content, are required awareness to increase local wisdom in every aspect of life particularly culture aspect. Therefore management of community radio need to understand local wisdom for implemented in packaging content. The problem is how management of community radio in developing local wisdom broadcast, the purpose of this research is to find out the role of community radio management in development local wisdom broadcast. This research is qualitative, purposively informan selection, data collection technique by interview, observation, and documentation. The result show that the role of community radio management in developing local wisdom broadcast is realized in form of local wisdom broadcast in community radio is the featured broadcast program. Programs and broadcasts local wisdom in the form of the local culture, manifested through broadcast programs compiled and presented in a packed agenda that creatively with interactive concept.
Cyberstalking di Twitter @triomacan2000 pada Pemilu 2014
Authors: Juditha Christiany 
Published: March 2016

The use of Twitter is open up the space for freedom of expression and opinion. But also raised a new phenomenon called cyberstalking (bullying). Acts of bullying (violence/intimidation) are also occur in cyberspace. People are free to commit violence and intimidate others without either use a personal account, institutional and anonymous. Especially when the Election arrives. This action is more intense uncontrolled. This study was carried out to get an overview of the phenomenon of cyberstalking on Twitter in 2014 elections that carried the account @ TrioMacan2000. The method used is a qualitative content analysis of the unit of analysis is the whole message (tweet) on account @ TrioMacan2000 during the legislative election campaign period opens March 16 to April 5, 2014. The study concluded that most of the tweets are also pictures posted on the account @ TrioMacan2000 throughout the campaign period of election legislation, cyberstalking entered in all categories studied, namely the desire to hurt; post power imbalance; repetition, as well as the pleasure that is felt by the perpetrators.
Konstruksi Realitas Siaran Berita pada Televisi Lokal
Authors: Sumiaty Noneng , Sumiati Neti 
Published: March 2016

The research generally aims to know the reality of journalists and television media in local television news. This is a descriptive study through a qualitative approach. Techniques of data collection are done through observation, in-depth interviews with key informants (key person), which is leading people in the editorial, the coordinator of the coverage, presenter of news, finance and human resource development and master of ceremony room ATV Sukabumi. The survey results revealed that to serve a local television news required reporting from journalists. Before the news broadcast gets edit of journalists, the coordinator of the coverage and the editor in chief as the elaboration of filtering journalist and chief editor of coverage as the owner of a local television media. So that, a local television news broadcast can not avoid the subjective element of the journalists and media owners who are part of the construction.
Persepsi Wartawan terhadap Aktivitas Jurnalistik Investigasi
Authors: Dirgahayu Dida 
Published: March 2016

Investigative reporting is a journalist working product related to the public interest and contain information that will not be revealed without the efforts of a journalist. Form of original investigative reporting exposing and documenting the various activities subject, previously unknown to the public. The problem in this research is how the perception of journalists on the descriptive with a sample of 20 journalists with the sampling technique is total sample. The results showed reporters normative and practical understanding of journalism and its activities. The reporters have ever been conducting a journalistic investigation. Not all reporters like investigative journalism activities. The journalists motivated conduct investigative journalism because it has the support of companies publishing original work place and feel satisfied with their activities.
Konsep Diri Remaja dari Keluarga Bercerai
Authors: Supratman Lucy Pujasari 
Published: March 2016

Being an adolescent as a family member from parental divorce is still lackingtobe appointedon aresearch topic, and mostly focused on the influence or impact of divorce. The researcher wants to explore adolescents’ experiences from divorce families. The study was conducted using qualitativeresearchmethods through observation and in-depth interviewwith descriptive case study on tenadolescentsfromdivorcefamilies. While the respondents weretaken bysnowball samplingandpurposivesampling. The results showed thatadolescents have difficult experiencesto be in divorcefamily. The adolescent experience of being displaced communicated verbally and nonverbally. The verbal communication is the language of motivation adolescents enlightened and openness. While the non verbal, they follow parents advices, full of comfort, and positive appearance. Theybecome adolescents whohavevirtueinreligiousity, independence, futuristic and maturity self-concept.
Sikap Masyarakat Terhadap Debat Calon Presiden pada Pemilu Presiden 2014 di RCTI
Authors: Budhirianto Syarif 
Published: March 2016

President and vice president candidates debate campaign on Rajawali Citra Televisi Indonesia (RCTI) station followed by two couples is to explain the vision and mission of the next government, so that the public can determine balanced and objective political attitudes. This study uses a quantitative approach by means of surveys. The goal is to determine public attitudes toward campaign events conducted at the presidential debate on RCTI. Sample size is 60 respondents chosen by Yamane sampling that located in Sumedang. The results show that respondents’ understanding and interest in this campaign is very good, but not followed by aspects of consciousness and behavior in support of the candidate. It happened because the communication messages are delivered has been mediated by group and interpersonal factors.
Real Time Reservoir Mapping While Drilling Reduces Risks, Geological and Fluid Position Uncertainty in the Gulf of Mexico
Authors: Leveque Soazig , Wolfarth Chris , Walz Dave , Welch Henry , Gerdes Bob , Castaneda Luis , Alexander Malcolm , Kadir Hanatu , Fulton Charles 
Published: March 2016

Abstract
Reservoirs in the Northern Gulf of Mexico (NGOM) are predominantly drilled with low angle wells. Drilling a well horizontally presents its own set of challenges.
The Mississippi Canyon block 22/21 operated by ANKOR Energy embodies the significant drilling challenges sometimes found in the NGOM reservoirs. The "H Sand" reservoir is a low resistivity (3 to 5 ohm.m) reservoir bounded by a northeast southwest fault. The overburden is uniform for more than 200ft TVD above the reservoir, making the landing challenging with conventional well placement techniques. The operator was planning a 2200ft lateral section to be drilled close to the Gas Oil Contact (GOC). Early water production was observed in the offset well located at the toe of the planned well, questioning the current position of the Oil Water Contact (OWC). Landing this well is challenging from both a geological and drilling point of view as a 3D trajectory is required to avoid the fault and offset wells.
In light of these challenges, the operator decided to use the very-deep electromagnetic (EM) directional resistivity tool with its detection range of more than 100ft, enabling the detection of the top of the H sand reservoir long before landing. In the lateral section, the tool was used in conjunction with an integrated petrophysical platform to map the top of the reservoir, detect the OWC and identify the lithology and fluids present while drilling.
While landing the well, the top of the H sand reservoir was detected 48ft TVD away – 10ft deeper than expected. The very-deep directional resistivity tool enabled the well to be confidently landed despite the lack of correlation markers and depth uncertainty of the "H Sand" reservoir. The OWC was detected more than 70ft below the well during the landing section even though the bit had not penetrated the H sand reservoir yet. The top of the reservoir and the OWC were mapped throughout the length of the lateral section along with the lithology and fluid content. Towards the toe of the lateral section, near a producing offset well, the OWC, still 50ft below the current trajectory, was observed to be rising up and getting closer to the well. Total Depth (TD) was called early to avoid premature water production. Water coning was confirmed as the reason behind early water production in the offset well.
The use of this technology during the landing and the lateral section of the well reduced dramatically the risk associated with geological uncertainty as well as fluid contact position providing critical information for field management planning.