bluuebunny/crossref_metadata_2025 huggingface dataset:
An Accreting Supermassive Black Hole Irradiating Molecular Gas in NGC 2110
Authors: Rosario David J. , Togi Aditya , Burtscher Leonard , Davies Richard I. , Shimizu Thomas T. , Lutz Dieter
Published: April 2019

The impact of active galactic nuclei (AGNs) on star formation has implications for our understanding of the relationships between supermassive black holes and their galaxies, as well as for the growth of galaxies over the history of the universe. We report on a high-resolution multiphase study of the nuclear environment in the nearby Seyfert galaxy NGC 2110 using the Atacama Large Millimeter/submillimeter Array, Hubble and Spitzer Space Telescopes, and the Very Large Telescope/SINFONI. We identify a region that is markedly weak in low-excitation CO

emission from cold molecular gas, but appears to be filled with ionized and warm molecular gas, which indicates that the AGN is directly influencing the properties of the molecular material. Using multiple molecular gas tracers, we demonstrate that, despite the lack of CO line emission, the surface densities and kinematics of molecular gas vary smoothly across the region. Our results demonstrate that the influence of an AGN on star-forming gas can be quite localized. In contrast to widely held theoretical expectations, we find that molecular gas remains resilient to the glare of energetic AGN feedback.
Relative impacts of the invasive Pacific oyster, Crassostrea gigas, over the native blue mussel, Mytilus edulis, are mediated by flow velocity and food concentration
Authors: Joyce Patrick W.S. , Kregting Louise , Dick Jaimie T.A.
Published: April 2019

The ecological impacts of invasive species can be severe, but are generally viewed as highly unpredictable. Recent methods combiningper capitafeeding rates, population abundances and environmental contexts have shown great utility in predicting invader impacts. Here, clearance rates of the invasive Pacific oyster,Crassostreagigas, and native mussel,Mytilusedulis, were investigated in a laboratory experiment where oscillatory water flow and algal food concentrations were manipulated. Invasive oysters had lower clearance rates than native mussels in all experimental groups and did not differ among flow velocities or food concentrations. Native mussel clearance rates were higher at 5 cm s-1compared to 0 and 15 cm s-1flow velocities and increased with increasing food concentration. The Relative Impact Potential (RIP) metric was used to assess (i) the influence of flow velocity and food concentration on potential impacts ofC.gigason plankton resources and, (ii) the impacts of coexisting reefs, containing both species, on resources compared to monospecific native mussel beds. Greatest Relative Impact Potential of invasive oysters was seen at the lowest flow velocity, but became reduced with increasing flow velocity and food concentration. Relative Impact Potentials of coexisting reefs were generally greater than monospecific native mussel beds, with greatest impacts predicted at lowest flow velocity. We suggest that the greatest ecological impacts and competition potential ofC.gigaswill occur in areas with low flow velocity, but that increased flow will mediate co-existence between the two species.
Introducing AlienScenarios: a project to develop scenarios and models of biological invasions for the 21 st century
Authors: Essl Franz , Lenzner Bernd , Courchamp Franck , Dullinger Stefan , Jeschke Jonathan M. , Kühn Ingolf , Leung Brian , Moser Dietmar , Roura-Pascual Núria , Seebens Hanno
Published: April 2019

AlienScenarios, a three-year project starting in March 2019, will evaluate for the first time the range of plausible futures of biological invasions for the 21st century. AlienScenarios consists of seven project partners and seven integrated complementary subprojects. We will develop the qualitative narratives for plausible futures of global alien species richness and impacts in the 21st century – the Alien Species Narratives (ASNs). The ASNs further serve as overarching concept to parameterize quantitative models of global, continental and regional futures of biological invasions. We will also establish the first global mechanistic invasion model considering major processes of biological invasions such as source pools, driver dynamics and establishment rates. Further, we will assess the impacts of invasive alien species (IAS) in terms of economic costs according to the different ASNs. In addition, we will assess the consequences of different levels of implementation of the European Union Regulation on IAS. Providing some more detailed regional information, we will analyse changes of the functional composition of communities in mountain regions under different scenario storylines and will extend the analyses to the Global South using Panama as a country-level case study. Finally, the results of the other WPs will be synthesized, and the approach and results of AlienScenarios will be discussed with and communicated to stakeholders and the wider community. AlienScenarios will provide crucially needed insights for pro-active alien species management and policy. It will thus make an important contribution to global assessments and projections of biodiversity and ecosystem services, as well as regional policies (e.g. EU regulation on IAS).
Usability Testing of a Mobile Clinical Decision Support App for Urinary Tract Infection Diagnosis in Nursing Homes
Authors: Reeder Blaine , Drake Cynthia , Ozkaynak Mustafa , Wald Heidi L.
Published: April 2019

The aim of the current study was to conduct usability testing of a mobile clinical decision support (CDS) prototype designed for urinary tract infection (UTI) assessment by nurses in nursing homes (NHs). Usability of the UTIDecide smartphone application (app) was evaluated using cognitive walk-through and think-aloud protocol sessions with nurses (
n
= 6) at two NH sites. This evaluation was followed by unsupervised field tests lasting ≥1 week with nurses at one site (
n
= 4) and posttest interviews and administration of the System Usability Scale (SUS). Cognitive walk-through/think-aloud sessions yielded interface design recommendations that were implemented prior to field tests. All test sessions resulted in highly positive perceived usability and usefulness from participants. Average SUS score was 92.5 (
n
= 3), which equates to an “A” grade for usability. Design recommendations identified for future app versions are: (a) integration of the mobile CDS app with organizational information systems; and (b) expanded features to support assessment of other conditions. [
Journal of Gerontological Nursing, 45
(7), 11–17.]
Deep Intrastromal Arcuate Keratotomy With In Situ Keratomileusis (DIAKIK) for the Treatment of High Astigmatism After Keratoplasty: 2-Year Follow-up
Authors: Drouglazet-Moalic Gwenola , Levy Ora , Goemaere Isabelle , Borderie Vincent , Laroche Laurent , Bouheraoua Nacim
Published: April 2019

PURPOSE:

To describe 2-year results of deep intrastromal arcuate keratotomy with in situ keratomileusis (DIAKIK) for the treatment of high astigmatism after keratoplasty.

METHODS:

This prospective study included 20 eyes from 20 patients presenting with high astigmatism after keratoplasty. All were treated by two-step femtosecond laser surgery, with two intrastromal arcuate keratotomies and a corneal flap, followed a few months later by excimer photoablation after reopening of the flap.

RESULTS:

At 24 months, both uncorrected (UDVA) and corrected (CDVA) distance visual acuity had improved from 1.12 ± 0.42 logMAR (20/200 Snellen) before surgery to 0.58 ± 0.23 logMAR (20/80 Snellen) (
P
< .001) and from 0.31 ± 0.26 logMAR (20/40 Snellen) to 0.20 ± 0.20 logMAR (20/32 Snellen) (
P
= .04), respectively. The mean spherical equivalent improved from −5.01 ± 4.35 to −1.54 ± 2.42 diopters. The mean efficacy index was 0.63. The mean correction index was 0.93 ± 0.32. The mean flattening index was 1.09 ± 0.75 and the mean safety index was 1.39. No graft rejection or epithelial ingrowth was observed.

CONCLUSIONS:

This two-step procedure was an effective treatment for high astigmatism after keratoplasty. The use of both femtosecond and excimer lasers helped to avoid some complications that would have jeopardized the grafts. Refractive and topographic stability was good 2 years after surgery.

[
J Refract Surg
. 2019;35(4):239–246.]
Biomechanical Impact of Localized Corneal Cross-linking Beyond the Irradiated Treatment Area
Authors: Webb Joshua N. , Langille Erin , Hafezi Farhad , Randleman J. Bradley , Scarcelli Giuliano
Published: April 2019

PURPOSE:

To investigate the stiffening effect of localized corneal cross-linking (L-CXL) within and beyond the irradiated region in three dimensions.

METHODS:

Ten porcine eyes were debrided of epithelium and incrementally soaked with 0.1% riboflavin solution. Using a customized, sharp-edged mask, half of the cornea was blocked while the other half was exposed to blue light (447 nm). The three-dimensional biomechanical properties of each cornea were then measured via Brillouin microscopy. An imaging system was used to quantify the optimal transition zone between cross-linked and non-cross-linked sections of the cornea when considering light propagation and scattering.

RESULTS:

A broad transition zone of 610 µm in width was observed between the fully cross-linked and non-cross-linked sections, indicating the stiffening response extended beyond the irradiated region. Light propagation and the scattering induced by the riboflavin-soaked cornea accounted for a maximum of 25 and 159 ± 3.2 µm, respectively.

CONCLUSIONS:

The stiffening effect of L-CXL extends beyond that of the irradiated area. When considering L-CXL protocols clinically, it will be important to account for increased stiffening in surrounding regions.

[
J Refract Surg
. 2019;35(4):253–260.]
Comparison of Wavefront-Optimized Ablation and Topography-Guided Contoura Ablation With LYRA Protocol in LASIK
Authors: Ozulken Kemal , Yuksel Erdem , Tekin Kemal , Kiziltoprak Hasan , Aydogan Semih
Published: April 2019

PURPOSE:

To compare the refractive outcomes and aberration data analysis of wavefront-optimized (WFO) ablation and topography-guided Contoura ablation (TGCA) (Contoura on the WaveLight laser; WaveLight GmbH, Erlangen, Germany) in patients who had laser-assisted in situ keratomileusis (LASIK) for myopia or myopic astigmatism.

METHODS:

In this comparative contralateral eye study, patients who underwent LASIK with TGCA in one eye and with WFO ablation in the fellow eye were analyzed. Aberration measurements and corneal topography were analyzed using the WaveLight Oculyzer II diagnostic device (Alcon Laboratories, Inc., Fort Worth, TX). Total corneal higher order aberrations (HOAs) including vertical and oblique astigmatism (Z
2
2
, Z
2
−2
), coma (Z
3
1
, Z
3
−1
), trefoil (Z
3
3
, Z
3
−3
), spherical aberration, and Q value were analyzed. These measurements were taken preoperatively and 3 months postoperatively.

RESULTS:

This study comprised 32 patients. There were no significant differences between both procedures according to postoperative uncorrected and corrected distance visual acuity values, refractive errors, and manifest refraction spherical equivalents within ±0.50 diopters (D) of emmetropia (
P
> .05). The preoperative corneal HOAs and Q values were also similar between the groups (
P
> .05). At 3 months postoperatively, the vertical and horizontal coma values in the WFO ablation group were statistically significantly higher compared to the TGCA group (
P
= .013 and .020, respectively). Less stromal tissue was ablated in the TGCA group compared to the WFO ablation group (
P
< .001).

CONCLUSIONS:

Although WFO ablation and TGCA protocols had statistically similar visual outcomes, the TGCA protocol was associated with a significantly lower induction in vertical and horizontal coma and smaller amount of tissue ablation compared to WFO ablation.

[
J Refract Surg.
2019;35(4):222–229.]
Functional Optical Zone and Centration Following SMILE and LASIK: A Prospective, Randomized, Contralateral Eye Study
Authors: Damgaard Iben B. , Ang Marcus , Mahmoud Ashraf M. , Farook Mohamed , Roberts Cynthia J. , Mehta Jodhbir S.
Published: April 2019

PURPOSE:

To compare centration and functional optical zone (FOZ) after small incision lenticule extraction (SMILE) and femtosecond laser–assisted in situ keratomileusis (LASIK).

METHODS:

In this prospective, randomized, single-masked, paired-eyed, clinical trial, 70 patients received SMILE in one eye and LASIK in the other eye for myopia and myopic astigmatism. FOZ was calculated using custom software on 3-month postoperative refractive power maps (Pentacam HR; Oculus Optikgeräte GmbH, Wetzlar, Germany). Programmed treatment area was defined as the total area of the programmed OZ plus the transition zone. Centration was evaluated by the linear distance between FOZ centroid and the pupil center and the corneal apex.

RESULTS:

The average preoperative spherical equivalent (−5.38 ± 1.65 vs −5.45 ± 1.61 diopters [D]), postoperative spherical equivalent (0.05 ± 0.39 vs 0.06 ± 0.39 D), uncorrected distance visual acuity (0.01 ± 0.13 vs 0.00 ± 0.08 logMAR), and corrected distance visual acuity (−0.07 ± 0.10 vs −0.07 ± 0.10 logMAR) were comparable in SMILE- and LASIK-treated eyes of the 60 patients with complete datasets (
P
> .419). Postoperative increase in spherical aberration was lower in SMILE than in LASIK (0.08 ± 0.16 vs 0.17 ± 0.18 µm,
P
= .002). The FOZ area was significantly larger in SMILE than in LASIK (30.25 ± 3.60 vs 29.21 ± 3.72 mm
2
), despite the smaller programmed OZ diameter (6.48 ± 0.08 vs 6.52 ± 0.11 mm) and smaller programmed treatment area (33.87 ± 0.81 vs 46.30 ± 2.61 mm
2
,
P
< .037). Pupil centration (0.43 ± 0.21 vs 0.41 ± 0.22 mm) and apex centration (0.48 ± 0.24 vs 0.48 ± 0.22 mm) were comparable between SMILE and LASIK (
P
> .694).

CONCLUSIONS:

SMILE created a larger FOZ than LASIK, despite the smaller programmed OZ. This may be due to a difference in the biomechanical response between the two procedures. Visual outcome and centration were comparable between SMILE and LASIK.

[
J Refract Surg
. 2019;35(4):230–237.]
Puberty: Onset and Progression
Authors: Khan Leah
Published: April 2019

Puberty is an important process that providers of health care to children and adolescents should be comfortable discussing. The normal process of puberty is complex and involves many different hormonal pathways. A clear understanding of these pathways will help providers counsel patients on what to expect as they anticipate and progress through puberty as well as be alerted when puberty is not progressing normally. Both early and late puberty can have physical and psychological implications for the pediatric population. Being familiar with the common causes and initial testing of abnormal puberty will allow the primary care provider to monitor appropriately and initiate further investigation if warranted. This article reviews both the typical pubertal pathway as well as delayed and premature puberty and their common causes.

[
Pediatr Ann
. 2019;48(4):e141–e145.]
Fun and Engagement in Lecture Halls through Social Gamification
Authors: Mader Sebastian , Bry François
Published: April 2019

The traditional lecture is a teaching format which offers students few opportunities for engagement turning them into passive listeners of the lecturers’ presentations what negatively impacts on their learning. With audience response systems, that is technology supporting classroom quizzes, breaks which reactivate the students can be introduced into the lecturers’ presentations. This article reports on an audience response system coupled with a social gamification of quizzes based on teams: Each student is assigned to a team and the students’ answers to quizzes contribute to their team’s success. An immediate overview of team participation updated in real-time during the quiz and updated team standings after the quiz displayed for everyone to see motivate students to participate in the quizzes. The contribution of this article is threefold: First, a team-based social gamification of quizzes aimed at boosting participation in quizzes and attendance at lectures, second, original technological tools supporting the proposed team-based social gamification, and third, a first evaluation demonstrating its effectiveness in a small course and a second evaluation suggesting that for use in large classes teams have to be built in a specific way. This article is an extended version of an article presented at ICL 2018 which provides a deeper representation of related work, a more extensive description of the team component, an additional evaluation, and implications for the use of the team-based social gamification in large classes.
Impacts of the Migration of Cross-Cutting Courses of a Traditional University in Distance Learning
Authors: Ba Mouhamadou Lamine , Gueye Bounama , Gueye Amadou Dahirou , Kassé Omar , Mballo Marie Hélène Wassa
Published: April 2019

Public universities in Senegal are facing huge issues related to the student reception and training. Given the budget deficit in Senegal and in African countries in general, our leaders struggle to continuously invest in the human and material resources within the universities. In addition, the courses taught in traditional programs are most often repetitive and sometimes not up-to-date, which does not allow universities to optimize time, space, human resources, and finance. As a result, it become acute to adapt the learning models and teaching methods within the traditional universities. Distance learning seems to be an essential solution. However, existing distance learning offers in these universities are in general geared towards certifying and degree-based distance learning. This does not solve the problems encountered in classical pedagogical training. Starting from these limits, we first propose a new efficient model of distance education at the service of a classical university, then we demonstrate its positive financial, material and pedagogical impacts. The proposed model has been implemented and successfully evaluated at Alioune Diop University of Bambey, a classical university in Senegal.
Accelerometer Based Structural Health Monitoring System on the Go: Developing Monitoring Systems with NI LabVIEW
Authors: Abdullahi Salami Ifedapo , Che Mustapha Nurul Arfah , Habaebi Mohamed Hadi , Islam Md. Rafiqul
Published: April 2019

Structural Health Monitoring (SHM) is a very crucial part of maintenance and management of buildings and structures. The use of SHM in recent years has been increasing due to the advancement in technology and the availability of nanodevices and nanosensors which can detect damaged part or crack in a structure. In this paper, PSpice simulation was carried out to show the response of the integrated electronic piezoelectric (IEPE) with a VPWL-source. Then, practical experiment was done using Arduino Mega with the ADXL335 accelerometer in a laboratory setup. LabVIEW software was used along with Arduino IDE software to make graphical visualization of accelerometer reading to be captured. Furthermore, a web service was deployed which enabled LabVIEW data transmission to a smartphone running Data Dashboard application for real-time monitoring anywhere. Therefore, making the system an ecosystem of Internet of Things enabling the user to access monitoring system while on the move. The result of the vibration test on the accelerometer showed that the accelerometer response to small changes in the x, y and z axis of the accelerometer which can be used to detect micro-movements in a structure.
A Proposed Web Based Real Time Brain Computer Interface (BCI) System for Usability Testing
Authors: Chamode Anjana Hewawasam Puwakpitiyage , Vegnish Rao Paramesura Rao , Muhammad Syahir Amali bin Muhammad Azizi , Wee Jing Tee , Raja Kumar Murugesan , M. D Hamzah
Published: April 2019

Hallway testing, Remote Usability testing, Expert review, Automated expert review and A/B testing are the methods commonly used for Usability testing. However, there is no reliable system that integrates Brain Computer Interface (BCI) into the testing process with focus given towards user emotion analysis using electroencephalography (EEG) signals. This paper proposes a system that would be able to identify user emotions while they are conducting usability tests and the results would be able to increase the accuracy of the usability test. In the proposed system the results of the usability test would be displayed in real time on a dashboard and a summary report can be generated for distribution.
Design of Wireless Security Surveillance System in Remote Unattended Wells
Authors: Du Jian , Meng Min Guang , Yang Chao
Published: April 2019

this paper analyzes the characteristics of the frame difference method and the background difference method in extracting the moving target under the condition of fixed camera, and puts forward the improved background difference method in combination with the advantages of the two. Meanwhile, background modeling is proposed to reduce the influence of external environment on mobile target detection. The comparison results show that the moving object detection effect based on the improved background difference method is better than the background difference method based on the mixed Gaussian model. The relevant test result of the simulation experimental platform shows that, the designed unattended security video surveillance system has feasibility. It is of great significance to improve the safety of the traditional video surveillance by the operator, to prevent people deliberately invasion, and to ensure the production and property safety of unattended well site.
Are We Part of the Problem?
Authors: Schnackenberg Heidi Lee
Published: April 2019

Do a quick search in Google Scholar and you will find overwhelming evidence that teachers both are and are not using technology in meaningful ways to enhance student learning. Actually, just do a simple Google search and you will find many news and magazine articles revealing the exact same confusing information. Yet despite all of the Internet traffic, are teachers any better at using technology to enhance student learning now than they were when educational technologies first arrived in schools? And are teacher preparation programs hindering or helping pre-service teachers in this endeavor? As Gen Z enters college and becomes practicing teachers, with their own particular characteristics and digital abilities and needs, it is important that we re-examine these questions and find out how to best serve the newest generation of teachers.
Connecting With Generation Z Through Social Media
Authors: Bourke Brian
Published: April 2019

When it comes to Generation Z's participation in higher education, few topics receive as much attention as their use of social media. However, much of the focus rests on marketing to Generation Z through social media. The connectedness of Generation Z is accompanied with assumptions about their technological abilities. Although they are generally comfortable with technology, their tech acumen is likely limited. Members of Generation Z are often labeled as “digital natives,” a term that suggests that because of the omnipresence of technology in their lives from birth, that they are naturally skilled and competent with many, if not all, forms of technology. The purpose of this chapter is to offer strategies for higher education professionals in connecting with members of Generation Z through social media.
Using Social Media in the Classroom
Authors: Reynolds Victoria
Published: April 2019

This chapter focuses on the unique problem of preparing faculty to meet students by crossing the divide of the digital media native generation. Members of Gen Z, the first of whom are just matriculating to college, hold certain expectations about the availability of information in digital forms, among other things. There is a growing realization, in the higher learning space, that traditional classroom practices are unlikely to meet the needs of Gen Z. Student learning preferences and styles have evolved. It is essential for faculty to investigate ways in which their teaching practices can develop to meet the needs of this generation. This chapter discusses the use of social media to engage students in a topic in the communication sciences and disorders that are seen as difficult and unengaging, augmentative and alternative communication systems. Students were encouraged to challenge their pre-conceptions around ability, and utilizing a digital medium, which in turn incentivized every student to become comfortable with digital technology and familiar with the principles of universal design.
Healthcare Information Security in the Cyber World
Authors: Coats Brian S. , Acharya Subrata
Published: April 2019

Integrity, efficiency, and accessibility in healthcare aren't new issues, but it has been only in recent years that they have gained significant traction with the US government passing a number of laws to greatly enhance the exchange of medical information amidst all relevant stakeholders. While many plans have been created, guidelines formed, and national strategies forged, there are still significant gaps in how actual technology will be applied to achieve these goals. A holistic approach with adequate input and support from all vital partakers is key to appropriate problem modeling and accurate solution determination. To this effect, this research presents a cognitive science-based solution by addressing comprehensive compliance implementation as mandated by the Health Insurance Portability and Accountability Act, the certified Electronic Health Record standard, and the federal Meaningful Use program. Using the developed standardized frameworks, an all-inclusive technological solution is presented to provide accessibility, efficiency, and integrity of healthcare information security systems.
Advanced-Level Security in Network and Real-Time Applications Using Machine Learning Approaches
Authors: Rath Mamata , Mishra Sushruta
Published: April 2019

Machine learning is a field that is developed out of artificial intelligence (AI). Applying AI, we needed to manufacture better and keen machines. Be that as it may, aside from a couple of simple errands, for example, finding the briefest way between two points, it isn't to program more mind boggling and continually developing difficulties. There was an acknowledgment that the best way to have the capacity to accomplish this undertaking was to give machines a chance to gain from itself. This sounds like a youngster learning from itself. So, machine learning was produced as another capacity for computers. Also, machine learning is available in such huge numbers of sections of technology that we don't understand it while utilizing it. This chapter explores advanced-level security in network and real-time applications using machine learning.
University Website Performance Evaluation Using Fuzzy SWARA and WASPAS-F
Authors: Ulutaş Alptekin
Published: April 2019

The internet has become an indispensable tool for humanity to access any knowledge. Many companies use the internet to provide their customers with information about their organizations. Website development is a tiring process that requires huge investments. If the performance of the website falls below the expected performance, it will have a negative impact on the website owner. Therefore, the measurement of website performance is an important task for companies. Since many factors or criteria affects the website performance, the use of multi-criteria decision-making methods will be helpful to the performance measurement. In this chapter, fuzzy SWARA and WASPAS-F methods are used to evaluate the performance of 10 state universities' websites located in Turkey. According to the results, the website of Erciyes University has been determined to have the best performance among the 10 universities evaluated. Future research may extend the sample size of the websites of universities.
Popular Culture and Communication Ethics
Authors: Ozgen Ozlen , Turkoglu Emir
Published: April 2019

Ethics that is possible to be considered as an element which would contribute to media in terms of quality signifies the core values in sense of journalism, and hence, it can represent the bond established with reality and truth. It has been an issue how much the individuals whose perception of reality is built through the media get close to and far away from the truth, and this reflects the difference or the relation between absolute fact and what is presented in the media. Umberto Eco, in his novel titled Numero Zero, focused on how patrons, using power of media with the aim of making profits by assuming transformative power of newspapers, have twisted the truth in the news. And in this chapter, the authors deal with Numero Zero written by Eco and make a discussion on communication ethics through the book, which is analyzed descriptively.
Big Brothers Are Seducing You
Authors: Maulana Ikbal
Published: April 2019

Internet technologies have empowered consumers, giving them access to any information, allowing them to compare products against one another before they decide to buy. And when the product disappoints them, they can easily spread their disappointment. They have even the possibility to mobilize themselves to force businesses to comply to their demand. However, the corporations that provide the technologies are also the ones that continually surveil and create detailed profile of each individual consumer. It allows businesses that use these data to better seduce consumers to want and desire many things that they actually do not need. While there are concerns that consumers are vulnerable to informational manipulation, on the internet consumers are not passive audience. On the contrary, they can challenge businesses in many ways. Consumers can be surveilled by businesses, but the former can also put the latter under their collective social surveillance.
The Colorful Leak of Postmodernism in the Turkish Cinema Onur Ünlü Narratives
Authors: Özdemir Berceste Gülçin
Published: April 2019

Postmodernism is interpreted with an opposed thought about modernism which affects all of the art fields. Cinema art is affected from the discourse created by postmodernism. As a result of the changes of narrative strategies in film narratives by postmodernism, existing conventions in classical narration cinema have been differentiated. In this chapter, Onur Ünlü's, who has given artworks in New Era Turkish Cinema, Güneşin Oğlu and Celal Tan ve Ailesinin Aşırı Acıklı Hikayesi films are analyzed according to postmodern narrative strategies with postmodern genre film criticism. Arguments, which are used by Onur Ünlü in the plot of his two films, are discussed together with narrative strategies. How the postmodern narrative strategies such as intertextuality, collage, parody, pastiche, self-reflexivity are used in both of the films are analyzed with plot, characters, time, and space. In collaboration with basic elements of narrative, narrative strategy is mentioned with regard to New Era Turkish Cinema's progressing.
Predicting Online Aggression
Authors: Vitaglione Guy
Published: April 2019

This study develops and validates measures of traits and attitudes for predicting online aggression. Over 362 participants ranging from 18 to 71 years in age completed online surveys on their attitudes, feelings, and experiences regarding online interactions and activities, in addition to reporting on several pre-established personality tests and demographic information. Participants also reported their own engagement in a variety of antisocial and prosocial online behaviors. Respondents' positive attitudes and tendencies toward online bullying (the Net Bully scale) and feelings of power and control when online (the Net Power scale) predicted their aggressive online behaviors (the Hostile Net Behaviors scale). Conversely, feelings that online interactions and activities are personally important (the Net Importance scale) predicted prosocial online behaviors (the Net Friendly scale). The merit of these scales to serve future research on online aggression and bullying is discussed.
A Self-Configurable Event Coverage Approach for Wireless Sensor Networks
Authors: Kaushik Ajay , Yakkali Ravi Teja , Indu S. , Ahmed Feroz , Gupta Daya , Nayar Raunaq , Yadav Sahil
Published: April 2019

Sensing and data aggregation capabilities of wireless sensor networks (WSNs) depends on efficient deployment of sensor nodes (SNs) in an area. In a large surveillance space, there is a need for more SNs to cover important crucial events despite of the optimum coverage. The authors propose an event-based efficient deployment algorithm (EEDA) for relocation of redundant sensors to the event location to achieve full coverage. They divide the deployment region into small square cells that allows individual cells to be efficiently monitored, instead of considering the whole scenario as one unit. EEDA ensures efficient coverage of the entire deployment region and senses the occurrence of any static or dynamic event with an optimum number of sensors. EEDA with square cells performs better than existing hexagon cell algorithm by 39%. EEDA is validated by simulation as well as by experimental results.
Contextual Determinants of E-Entrepreneurship
Authors: Che Yu , Zhang Bin
Published: April 2019

The value of e-entrepreneurship lies in its effort to contextualize entrepreneurship in this digital economy age. As a result, this article develops a conceptual framework addressing context factors leading to discovering and exploiting e-entrepreneurial opportunities, as well as the opportunities and challenges these context factors would bring. With the information collected from a case study on a Chinese digital start-up, the authors develop a conceptual framework comprising six factors: information and communication technology (ICT) infrastructure, ICT innovativeness, inadequacy of institutions, institutional responding rate, e-entrepreneurial climate and social expectation congruence. This article explores the opportunities and challenges for each of the six factors and develops six propositions. Finally, it outlines a future research agenda to fill the gap in understanding e-entrepreneurship.
Enhancing Consumers' Stickiness to Online Brand Communities as an Innovative Relationship Marketing Strategy
Authors: Chen Mei-hui , Tsai Kune-muh , Ke Yi-An
Published: April 2019

With the popularity of social networking sites, enterprises start to establish their own brand communities to manage and maintain customer relationships. Consumer stickiness is regarded as one of the critical determinants for the success of a brand community. Enhancing consumers' stickiness to online communities can lead to repurchase behavior and positive word-of-mouth and thereby increase sales volume and customer recruitment. This study endeavors to explore the antecedents of consumers' stickiness to a SNS-based online brand community from the aspects of enterprises and consumers. Data were collected through online questionnaires conducted on Do-Survey website with a hyperlink posted on the PTT, the largest BBS website of Taiwan. After excluding non-usable data, the final sample size was 516. The results indicated that information quality, perceived value, and community identification have positive effects on consumers' stickiness to online brand communities. Moreover, stickiness to online brand communities has positive impacts on customer loyalty.
Social Presence and User-Generated Content of Social Media in China
Authors: Sun Rui , Xue-Jiao Hong
Published: April 2019

As a representative of the flourishing development of the internet, social media is a critical platform for user-generated content (UGC). This study investigated the relationship between social presence and UGC through qualitative and quantitative methods. Social presence and user value were divided into three dimensions to comprehensively analyze how sensory, affective, and cognitive social presence produces emotional, social, and functional user value, thereby driving the formulation of UGC. Empirical research was carried out incorporating the moderating effect of perceived risk.
Formation Transformation Based on Leader-Follower Algorithm
Authors: Duan Yanyu , Gao Zhiqiang , Peng Zhensheng , Yang Wenshuai , Wang Yun
Published: April 2019

A method based on the leader-follower algorithm is proposed for transformation among the formations. The introduction of the greedy algorithm, behavior-based control and virtual structure help realize the region division and the calculation of the distribution of the leaders and followers in target formation. Collision detection and collision avoidance are proposed to solve path conflicts with error free feedback and effectively maintain the stability of motion. The modeling of transformation is simulated by the shape from a line to a wedged, in which the formation is adjusted by the distance difference obtained by feedback. The experimental results show that it is feasible and effective to implement the formation conversion and formation control, and the system possess a better robustness and stability.
A Learning Framework for Target Detection and Human Face Recognition in Real Time
Authors: Huang Jiaxing , Yuan Zhengnan , Zhou Xuan
Published: April 2019

Inspired by the function, mechanism and efficiency of the visual nerve system of human beings, a revolutionary detection and reorganization method named YOLO is present to provide an accurate, stable and fast arithmetic for a variety of targets, be it target detection for unmanned vehicle, car license recognition and optimization for surveillance. The traditional method for object detection is to reuse the classifier to implement detection, in contrast, the method named YOLOV2 process this problem by considering it in the mathematical area as a regression of spatially discrete bordered areas and relative class probability. However, as a cost of stable and fast response of this arithmetic, inaccurate detection maybe caused by YOLOV2 when the detected object is tiny (e.g., face recognition in surveillance). In this article, the authors provide a new method to further improve the performance of YOLOV2 by utilizing the accurate, stable and fast properties of YOLOV2 and editing the original code of YOLOV2 to eliminate the inaccuracy of tiny object detection, and implement this method on an embedded system.
The Impact of Technostress Components on the Employees Satisfaction and Perceived Performance
Authors: Al-Ansari Muna A. , Alshare Khaled
Published: April 2019

The present study investigates the effects of technostress creators and inhibitors on job satisfaction, organizational commitment and perceived performance. A research model derived from the Transaction-Based Model of Stress and Coping Theory was developed and tested using a web-based survey questionnaire. The variables considered are technostress creators, technostress inhibitors, job satisfaction, organizational commitment, and perceived performance. A Structural Equation Model using a convenience sample from Qatar population was used to test the model. The results show that organizational commitment has a significant positive effect on perceived performance. Job satisfaction has a significant positive effect on organizational commitment. Technostress creators have a significant negative effect on job satisfaction. Technostress inhibitors have a significant positive effect on job satisfaction. Implications for managers and researchers are reported.
Are ICTs Really That Important in Driving Industry Performance?
Authors: Grant Delvin , Yeo Benjamin
Published: April 2019

A decision tree is used to investigate how information and communication technologies (ICTs) and financial factors influence the performance of service and manufacturing industries globally. Industry performance is measured by average fixed asset purchases among firms at the industry level. In addition, industry sectors and geographic regions are included in the predictive model. The results show that financial factors are better predictors of performance than ICT factors. For example, access to bank loans or lines of credit is by far the best predictor among the variables included in the study. Having a website is the only ICT factor among the top five predictors. Geography also plays an important role in predicting industry performance.
Exploring Relationship Quality of User's Cloud Service
Authors: Chou Tung-Hsiang
Published: April 2019

The purpose of this article is to develop a research model examining the effects on relationship quality of a cloud service and to investigate the continuance intention of SaaS CRM (Software as a Service Customer Relationship Management) based on SaaS cloud service quality of service (SaaS-Qual) model. As basis theories, the study adopted service quality of SaaS and a post-acceptance model of IS continuance. The study also adds a relationship of quality as a moderate variance to validate the feasibility of cloud service. An online survey and a paper-questionnaire were used to collect data, and most respondents were experienced with using SaaS service for CRM for at least one year. The research causal model was validated by using SEM, and all eight study hypotheses were supported. These results indicate that relationship quality played an important role in influencing users' satisfaction and trust of SaaS's CRM service. High SaaS service quality could also increase users' intention to use cloud service continuously. SaaS CRM service providers should focus on enhancing relationship quality through motivational cloud service needs and SaaS CRM service features to increase user satisfaction and enhance levels of trust to promote continued use of SaaS service on the internet. This study contributes to a theoretical understanding of how relationship quality and cloud service can affect continuance intention.
Selection of Materials for Weight Reduction in Sports Cars
Authors: de Camargo Daniel Zancanella , Zancanella Antonio Carlos Barbosa , da Silva Luiz Rafael Resende , Maziero Rômulo , de Castro Bruno Dorneles , Rubio Juan Carlos Campos
Published: April 2019

The need for studies aiming at the selection of materials for such application is preponderant, be-cause a large increase in the focus on vehicle weight reduction by the automotive industry in recent years. In environmental and commercial terms, this reduction provides lower energy consumption and better vehicle performance, as well as limiting pollutant emissions. The present work has the objective to select the best materials in substitution of the metals and glass used in doors, hood and windows, respectively, of sports cars to decrease the weight/power ratio and consequently improvement of performance. With the aid of Ashby maps simulated through the CES EduPackTM 2018 program, maximizing the limit of tensile strength and minimizing density, it was possible to analyze that carbon fiber composites obtained values of merit index of up to eleven times greater than the value obtained by carbon steels. Already in substitution of the glass, the acrylic obtained a index of merit about three times greater. At the same time, the tensile strength, fracture toughness, density and cost of the possible materials obtained in the previous method were obtained through the Pugh matrix, the exchanges for composites of glass fiber and polycarbonate obtained outstanding responses.
Fracture Properties and Failure Analysis of Zirconia Toughened Hydroxyapatite Bioceramic Coating
Authors: Chai Guo Zhong , Bao Yu Mei , Lv Jun
Published: April 2019

In order to improve the weak mechanical properties of bioceramic HA, composite coatings were prepared by adding the toughening zirconia to HA powder so as to improve the biological and the physical properties but not to reduce the biocompatibility of HA bioceramic coating. The pure HA coating and HA/ZrO2 composite coating containing 30% stabilized zirconia on titanium alloy by employing plasma spraying technology were prepared. The relation curves of load-displacement for the two coatings were obtained with three point bending experiment, and obtained the slope about the straight fitting line. Then the elastic modulus and fracture toughness of the both coatings were calculated. The fracture morphology of the two coatings after their failure was observed using electron microscope.
Synthesis and Characterization of Boron Nitride Nanotubes-Polycaprolactone Nanocomposite
Authors: Kakarla Akesh Babu , Kong Cin , Kong Wei , Kong Ing
Published: April 2019

This work aimed to investigate the effects of boron nitride nanotubes (BNNTs) on the mechanical and thermal properties of BNNT-polycaprolactone (PCL) nanocomposites. BNNTs were synthesized via co-precipitation and annealing process by using amorphous boron powder as a precursor. PCL-BNNT nanocomposites were prepared by using sonication and thermal curing. Their morphology, thermal and tensile properties were characterized. Morphological observation revealed that BNNTs were arbitrarily and evenly dispersed within the PCL which indicated a good dispersion of the nanotubes in polymer matrix. Both the thermal stability and mechanical properties of neat PCL were enhanced with the addition of BNNTs to polymer matrix, in particular the tensile strength of PLC was increased by 101% with the addition of 5 wt% nanofillers.
Enhancement of Mechanical and Thermal Characteristics of Polyurethane-Based Composite with Silica Aerogel
Authors: Ahn Jae Hyeok , Kim Jeong Hyeon , Kim Jeong Dae , Kim Seul Kee , Park Kang Hyun , Park Sung Kyun , Lee Jae Myung
Published: April 2019

Synthesis of polyurethane foams (PUF) with silica aerogel nanoparticles is an efficient alternative to improve the mechanical and thermal properties of the foam owing to the outstanding thermal insulation properties of porous silica aerogel nanoparticles. Silica aerogel was added into polyurethane foams at different weight percent (0, 1, 3, 5 wt.%) to observe the changes in the material properties. To confirm the applicability of the synthesized PUF to the heat insulating material, compressive tests were carried out at ambient and cryogenic temperature (20, -163°C) and the thermal conductivities were measured according to wt.%. In addition, the cell microstructure was identified using FE-SEM to analyze the effect of silica aerogels on the foam morphologies. As a result of the experiment, it was confirmed that the mechanical strength and the heat insulation performance were improved in the polyurethane foam containing 1 wt.% of silica aerogel.
Feasibility Study of Pressure Boiled Method on Defibrillation Stalk Sweet Sorghum Fibres Waste
Authors: Ismojo  , Hadiwibowo Rangga , Zulfia Anne , Chalid Mochamad
Published: April 2019

Today, due to environmental reasons and limited of fossil resources take many researchers to develop new and renewable materials. Bio-composites which is consisted of synthetic polymers matrix and natural fibres, is one of the alternatives to reducing its problems. Among of natural fibre that has good potential to be used as reinforcement in synthetic polymer matrices is sorghum fibre. However the hydrophilic nature of natural fibers causes it to be incompatible with synthetic polymer matrices which have hydrophobic properties and it’s need to surface modified with particular treatment. The aim of this work was conducted to study the effect of hydrothermal treatment through pressure boiled method by using distilled water in a pressurized stainless steel pan cooking for 5 minutes to defibrillation and hydrophilic properties of stalk sweet sorghum fibres. Evaluation of the experiments was characterized with Field-Emission Scanning Electron microscope (FE-SEM), Fourier Transformation Infra-Red (FTIR) Spectroscopy and sessile drop test instruments, respectively. The experiment was found that using hydrothermal treatments through pressure boiled method led to a removal of binding materials, such as a wax, hemicellulose and lignin, and enhancement the hydrophilic properties of sorghum fibres.