Miracle-dz/UniFAR-FTUs huggingface dataset:
A new 24-pulse diode rectifier for high voltage and high power applications

Uncontrolled diode rectifiers have been widely used at the front end of power electronic equipment as an interface to the electric utility. Due to the nonlinear nature of diodes and DC link capacitors, the input line currents are highly distorted and contain significant harmonics causing a number of harmonic problems in the power system. In this paper, a new 24-pulse diode rectifier system based upon the conventional series-connected 12-pulse rectifier is proposed with the least number of switching devices and low VA rating of the additional passive components. The proposed approach does not employ any active switching devices, and therefore is rugged and simple to implement. Detailed analysis with VA rating calculation of the components is presented and experimental results from a 220 V, 3 kVA rectifier system verify the proposed concept.
Measuring Gender Differences in Information Sharing Using Network Analysis: The Case of the Austrian Interlocking Directorship Network in 2009

In recent literature a relevant problem has been the relationship between career/personal contact networks and different career paths. In addition the recent advances in social capital theory have shown the way in which networks impact on personal careers. In particular women’s careers appear to be negatively affected by the informational network structure. The main contribution of this work is to propose empirical evidence of this phenomenon by considering the gendered directorship network with relation to Austria and to show the structural differences by gender in the network. By using community detection techniques we have found various communities in which females seem not to be present at all, where females show significantly fewer contacts than males in the network, and finally where the proportion of males exceeds 91%. The results show the predominant role in the network of male directors; these differences are very relevant if we consider the network as a tool of vehicle information and as a power mechanism. In this paper we wish to make an original contribution to the debate of the well-known “glass-ceiling” effect.
A deformation theorem in the noncompact nonsmooth setting and its applications

We build a deformation for a continuous functional dened on a Banach space and invariant with respect to an isometric action of a non- compact group. Under these assumptions the Palais-Smale condition does not hold. When the functional is also invariant with respect to the action of a com- pact Lie group, we prove that the deformation can be chosen to be equivariant with respect to the same action. In the second part of the paper a system of periodic quasilinear partial dierential equations invariant under the action of some compact Lie group is considered. Using the deformation technique developed in the rst part, we prove the existence of innitely many solutions.
A noncooperative dynamic game model of opinion dynamics in multilayer social networks

A NONCOOPERATIVE DYNAMIC GAME MODEL OF OPINION DYNAMICS IN MULTILAYER SOCIAL NETWORKS Muhammad Umar B. Niazi M.S. in Electrical and Electronics Engineering Advisor: Arif Bülent Özgüler August 2017 How do people living in a society form their opinions on daily or prevalent topics? A noncooperative differential (dynamic) game model of opinion dynamics, where the agents’ motives are shaped by how susceptible they are to others’ influence, how stubborn they are, and how quick they are willing to change their opinions on socially prevalent issues is considered here. The agents connected through a multilayer network interact with each other on a set of issues (layers) for a finite time duration. They express their opinions, listen to others’ and, hence, mutually influence each other. The tendency of agents to interact with people of similar traits, known as homophily, restricts them in their own localities, which may correspond to ethnicity but may as well be the ideological ones. This governs their interpersonal influences and is the cause of clustering in the network. As the agents build their biases, they also create conceptions about the correlation between the issues. As a result, antagonistic interactions arise if the agents see each other as holding inconsistent opinions on the issues according to their individual conceptions. This way the interpersonal influence becomes ineffective leading to conflict and disagreement between the agents. The dynamic game formulated here takes these subtle issues into account. The game is proved to admit a unique Nash equilibrium under a mild necessary and sufficient condition. This condition is argued to be fulfilled if there is some harmony of views among the agents in the network. The harmony may be in the form of similarity in pairwise conceptions about the issues but may also be a collective agreement on the status of a leader in the network. Since the agents do not seek any social motive in the game but their own individual motives, the existence of a Nash equilibrium can be interpreted as an iii
Cephalopod assemblages, abundance and species distribution in the Gulf of Cadiz (SW Spain)

Spatial distribution and species diversity of Cephalopoda caught in ARSA bottom trawl surveys were studied out during two different seasons (autumn and spring) in the Gulf of Cadiz (Spain) from 2000 to 2007. Species composition of cephalopod assemblages was analysed, using both clustering analyses and non-metric multidimensional scaling analysis (nMDS). Spatial distribution of the assemblages identified and abundance of the main species were mapped with Surfer 8.0 software, using kriging as the geostatistical gridding method. A total of 35 cephalopod species belonging to 6 families were found at depths between 20 and 700 m. In each season, Sepiolidae was the most abundant family in terms of number of species, followed by Octopodidae. The species richness increased up to 100-120 m depth, where it reached the maximum value. From 120 m, the species richness decreased progressively with depth. In spring, the species with the highest occurrence was Eledone moschata (34%) and in autumn it was Alloteuthis media (70%). In both seasons, the most abundant species in terms of weight was Octopus vulgaris, while Alloteuthis media showed the highest yields in terms of numbers. Most species showed wide bathymetric ranges, especially in autumn. Three different assemblages were found in both seasons during the time period analysed (although 2003 and 2006 were not included in the cluster analysis): shelf assemblage (20-160 m), deep shelf/upper slope assemblage (100-350 m) and middle slope assemblage (320-700 m). The specific composition of these three assemblages was similar between spring and autumn and an overlap could be observed between them, mainly in the two continental shelf groups: shelf and deep shelf/upper slope assemblages. Alloteuthis media and Alloteuthis subulata were the most abundant species in the shelf assemblage as well as in the deep shelf/upper slope assemblage. In the middle slope assemblage, Illex coindetii was the most abundant species. The assemblages and their spatial distributions could be largely related to a combination of physical and biological factors and their interactions.
Language and executive functioning in children with ADHD

This study examines language abilities of children with attention-deficit hyperactivity disorder (ADHD) and compares these abilities to those of children with specific language impairment (SLI) and typically developing children. Executive functioning, an umbrella term for various higher order cognitive processes, and responsible for goal-directed behaviour, is also examined. Moreover, the study explores the possibility that executive dysfunctioning may be specifically linked to pragmatic language problems. The results of this study showed that children with ADHD differed in pragmatic language production in comparison with typically developing children, and that they performed equally poor as children with SLI in this language domain. With respect to executive functioning, children with ADHD performed worse than both other groups on the measure for inhibition. However, no differences between the three groups were reported for the measures of working memory, planning, cognitive flexibility and non-verbal fluency. Significant correlations between executive functioning and pragmatic language production were not found. The study is of particular relevance to scholars who are interested in the interaction between language (grammar and pragmatics) and cognition (executive functioning).
Chitosan Nanoparticles as Vehicle for Prolonged Ocular Delivery of Ofloxacin

Ofloxacin is a synthetic broad-spectrum fluroquinolone antibiotic, frequently used for the treatment of ocular infections. In the present study, ionic gelation technique was employed as the method of preparation of ofloxacin loaded chitosan nanoparticles using different concentrations of chitosan and sodium tripolyphosphate (TPP) and the potential of these nanoparticles in sustained ocular drug delivery was investigated. Different drug-polymer ratios were used to prepare five batches of nanoparticles at two concentrations of chitosan solutions (0.2% w/v and 0.4% w/v). The formulated nanoparticles were evaluated for morphology by Scanning Electron Microscopy, and subjected to particle size analysis and zeta potential measurement by Zetasizer. Drug content, encapsulation efficiency and in vitro drug release studies were also done. LCS-OF3 nanoparticles prepared with 0.2% chitosan solution and drug-chitosan ratio 3:1 were checked for pH and osmolality for their suitability in in vivo study after that subjected to in vivo drug release study in rabbits, the results of which clearly indicate the controlled and prolonged drug release from LCS-OF3 nanoparticles when compared to that from commercially available ofloxacin eye drops.
Screening and breeding for resistance to leafminer (Liriomyza langei) in lettuce and spinach.

Leafminer (Liriomyza langei Frick) is a major pest that causes considerable damage to a wide variety of vegetable crops including lettuce and spinach. Forty-eight lettuce cultivars and introduction lines and 338 spinach accessions were screened in an insect cage for leafminer resistance. Significant genetic variation for leafminer stings per unit leaf area was observed among genotypes tested. Resistant lines with fewer leafminer stings were found in cultivated lettuce and spinach, Lactuca saligna, L. serriola, and L. virosa. The resistance in lettuce was confirmed in a field experiment. Crosses were made to combine leafminer resistance and superior horticultural traits in crisphead, green leaf, red leaf, romaine, and butterhead lettuces. Leaf miner resistant plants were selected in F2 progenies of such crosses, and were backcrossed to restore horticultural type. A phenotypic recurrent selection method was used to increase the level of leafminer resistance in spinach.
A Typology to Explore the Blurring Boundaries

From the perspective of journalism, weblogs can be seen as a new category of news and current affairs communication. Although most weblogs do not even pretend to be journalistic or related to current events in the sense shared by institutional media, when bloggers approach the arena of journalism, some of their working principles can challenge traditional professional standards: Conversation with the audience, transparency in the reporting process or even participatory news production are common in blogging. By challenging the conventional understanding of what journalism is, weblogs have revitalized the voices that expect a paradigm shift in journalism in the Internet era. In order to contribute to the debate on the influences of weblogs on journalism and make it more systematic, we propose a typology of journalistic weblogs, along a continuum ranging from the least to the most institutionalized in terms of their relationship to the established media: At one end, we find weblogs produced by the public outside media companies, and at the other end, we find those that are part of media content and produced by professional staff journalists. We argue that weblogs are a symbol of the ongoing change in the relationship between citizens, media and journalists – a change that questions the basic assumptions of the traditional roles of institutional journalism.
Performance of MUSIC and ESPRIT for Joint Estimation of DOA and Angular Spread in Slow Fading Environment(Wireless Communications Issue)

SUMMARY It is known that MUSIC and ESPRIT algorithms can estimate simultaneously both the instantaneous Direction of Arrival (DOA) and the instantaneous Angular Spread (AS) in multiple scattering environments. These algorithms use the Extended Array Mode Vector (EAMV) with complex angle. The previous work evaluated the performance of those algorithms by comparing the estimated DOA and the estimated AS with the DOA and the AS given in the EAMV, which uses the first-order approximation. Thus, this evaluation method has not clearly reflected the estimation accuracy of MUSIC and ESPRIT. This paper presents the joint estimation performance of MUSIC and ESPRIT by introducing the criteria for evaluation. For this, the spatial signature (SS) is reconstructed from the estimates of the DOA and the AS, and compared to the true SS in the meaning of data fitting.
DMP VI: Preliminary results from 2009 fieldwork on the human prehistory of the Libyan Sahara

Abstract This paper reports on the work carried out during the 2009 field season of the prehistory sub-theme of the Desert Migrations Project. The work consisted of detailed survey and small-scale excavations in two wadis that drain the Messak Settafet, near the town of Jarma. Both wadis were found to contain evidence of Palaeolithic and Neolithic occupation, as well as of having been used as migratory routes between the Ubari and Murzuq sand seas. One of the wadis (WJAR-E-O1) was surveyed intensely along a few kilometers of its tributary margins. This revealed archaeological material ranging from Oldowan (Mode 1) to historic. The distribution of the various industries and structures had a distinct spatial patterning; the Palaeolithic scatters were spatially discrete, but Holocene remains were often found superimposed on earlier industries. Among the finds were a spatially discrete Oldowan assemblage, an extensive Acheulean industry which included the exploitation of fossil wood as a raw material, the identification of at least five major outcrops of fossil trees, and a number of more recent structures dating from Neolithic to Islamic times and consisting of graves, cairns, rock engravings, and stone features. Middle Stone Age lithics, so predominant over the surface of the Messak plateau, were absent. The second wadi (WJAR-W-02) was geomorphologically different, being comparatively narrow and deeply incised, and containing a number of terraces on the wadi bed resulting from cut and infill processes in the past. The surface of these terraces contained an extensive Aterian lithic industry, while evidence of late Holocene use of the area was also recorded in the form of Tifinagh inscriptions, rock engravings, cairns and graves. Besides mapping the archaeological distributions, a number of trenches were dug at the edge of the river terraces. These revealed an in situ stratigraphic sequence, within which Aterian lithics were found at a depth of > 1 m. Samples for OSL dating were taken. Overall, the work of the 2009 field season was extremely successful in that, besides the fascinating range of archaeological material recorded and studied, it provided important insights into the role of the north-south wadis that cross the Messak, the southern boundary of the area being explored by the DMP, and their differential use in prehistory.
The role of networks in firms’ multi-characteristics competition and market-share inequality

We develop a location analysis spatial model of firms’ competition in multi-characteristics space, where consumers’ opinions about the firms’ products are distributed on multilayered networks. Firms do not compete on price but only on location upon the products’ multi-characteristics space, and they aim to attract the maximum number of consumers. Boundedly rational consumers have distinct ideal points/tastes over the possible available firm locations but, crucially, they are affected by the opinions of their neighbors. Our central argument is that the consolidation of a dense underlying consumers’ opinion network is the key for the firm to enlarge its market-share. Proposing a dynamic agent-based analysis on firms’ location choice we characterize multi-dimensional product differentiation competition as adaptive learning by firms’ managers and we argue that such a complex systems approach advances the analysis in alternative ways, beyond game-theoretic calculations.
A Greedy Multistage Convex Relaxation Algorithm Applied to Structured Group Sparse Reconstruction Problems Based on Iterative Support Detection

We propose a new effective algorithm for recovering a group sparse signal from very limited observations or measured data. As we know that a better reconstruction quality can be achieved when encoding more structural information besides sparsity, the commonly employed -regularization incorporating the prior grouping information has a better performance than the plain -regularized models as expected. In this paper we make a further use of the prior grouping information as well as possibly other prior information by considering a weighted model. Specifically, we propose a multistage convex relaxation procedure to alternatively estimate weights and solve the resulted weighted problem. The procedure of estimating weights makes better use of the prior grouping information and is implemented based on the iterative support detection (Wang and Yin, 2010). Comprehensive numerical experiments show that our approach brings significant recovery enhancements compared with the plain model, solved via the alternating direction method (ADM) (Deng et al., 2013), either in noiseless or in noisy environments.
The Personal is Political: Developing new subjectivities through participatory action research

Participatory action research (PAR) is gaining critical attention from scholars across the social sciences, and in the field of geography more specifically, as it promises a viable alternative for researchers concerned with social justice. If most of the benefits of PAR are identified in terms of its potential as a vehicle for social change and action, PAR's role in personal change is less understood. This paper considers the development of new subjectivities in a PAR process from a post-structural perspective. My objective is to reframe and connect the social justice orientation of PAR to a feminist post-structural project which emphasizes the fluidity and multiplicity of subject positions as the basis for personal (and social) transformation. Analysis draws upon collaborative research conducted with six young women in New York City and their project Makes Me Mad: Stereotypes of young urban womyn of color. Discussion addresses the role of critical reflection, dialogue, emotion, and narrative in the participatory research process. Building upon critical educator/theorist Paolo Freire's contributions to PAR, I address issues of power, scale, and the politics of location in order to contribute to understandings of spatial praxis.
Australia’s first national level quantitative environmental justice assessment of industrial air pollution

This study presents the first national level quantitative environmental justice assessment of industrial air pollution in Australia. Specifically, our analysis links the spatial distribution of sites and emissions associated with industrial pollution sources derived from the National Pollution Inventory, to Indigenous status and social disadvantage characteristics of communities derived from Australian Bureau of Statistics indicators. Our results reveal a clear national pattern of environmental injustice based on the locations of industrial pollution sources, as well as volume, and toxicity of air pollution released at these locations. Communities with the highest number of polluting sites, emission volume, and toxicity-weighted air emissions indicate significantly greater proportions of Indigenous population and higher levels of socio-economic disadvantage. The quantities and toxicities of industrial air pollution are particularly higher in communities with the lowest levels of educational attainment and occupational status. These findings emphasize the need for more detailed analysis in specific regions and communities where socially disadvantaged groups are disproportionately impacted by industrial air pollution. Our empirical findings also underscore the growing necessity to incorporate environmental justice considerations in environmental planning and policy-making in Australia.
Changes in spatial and temporal distribution and vocal behavior of Blainville's beaked whales (Mesoplodon densirostris) during multiship exercises with mid‐frequency sonar

The number and distribution of vocalizing groups of Blainville's beaked whales (Mesoplodon densirostris) were analyzed before, during, and after multiship mid-frequency active sonar operations at the US Navy's Atlantic Undersea Test and Evaluation Center (AUTEC) in the Bahamas. Groups of foraging animals were isolated by detecting their echolocation clicks using an array of bottom-mounted hydrophones. Two data sets were evaluated consisting of 115 and 240 h of acoustic data in May 2007 and 2008, respectively. Vocal activity was observed to decline during active sonar exercises and increase upon cessation of sonar transmissions in both data sets. Vocal activity did not recover to preexposure levels in the postexposure time period in 2007 nor in the initial postexposure period in the 2008 data set. Clicks detected during sonar operations were generally found to be on the periphery of the hydrophone field and vocal durations declined for those groups that remained on the range in that time period. Receive levels were calculated for several vocal groups of whales and indicated that animals continued to forage when exposed to sonar at levels as high as 157 dB re: μPa.
PENGARUH PERSEPSI MEREK DAN KEPERCAYAAN KONSUMEN ATAS PRODUK TERHADAP BRAND SWITCHING ATAS PRODUK SMARTPHONE (BlackBerry) PADA MAHASISWA UNP

Penelitian ini bertujuan untuk menganalisis pengaruh persepsi merek dan kepercayaan konsumen atas produk terhadap peralihan merek pada produk smartphone (BlackBerry ) pada mahasiswa UNP. Jenis penelitian ini adalah penelitian deskriptif yang bertujuan untuk mendeskripsikan peristiwa atau kejadian-kejadian variabel penelitian juga untuk menemukan ada tidaknya pengaruh antara variabel bebas dan variabel terikat. Pengambilan sampel adalah dengan teknik Multiple Stage Sample , yaitu dengan sampel ditarik dari kelompok populasi, tetapi tidak semua anggota kelompok populasi menjadi anggota sampel tetapi hanya sebagian dari anggota subpopulasi menjadi anggota sampel. Caranya dengan menggunakan proporsional sampling. Hasil penelitian ini menunjukkan bahwa 1) Persepsi merek memberikan pengaruh yang signifikan terhadap peralihan merek pada produk smartphone ( BlackBerry ) pada mahasiswa UNP dengan tingkat signifikan variabel 0,000 < 0,05. 2) Kepercayaan konsumen atas produk memberikan pengaruh yang signifikan terhadap peralihan merek pada produk smartphone ( BlackBerry ) pada mahasiswa UNP dengan tingkat signifikan variabel 0,000 < 0,05. Berdasarkan pembahasan dan simpulan, maka disarankan kepada pimpinan perusahaan BlackBerry untuk meningkatkan persepsi merek dan meningkatkan kepercayaan konsumen atas kualias produk Smartphone ( BlackBerry ). Kata kunci : Persepsi Merek, Kepercayaan Konsumen dan Peralihan Merek