415 research outputs found
Meganola odontographa Hacker 2012
No full textMeganola odontographa Hacker, 2012 Meganola odontographa Hacker, 2012, Esperiana 17: 427. Type locality: [Burkina Faso] Comoe. Holotype, ♀ (ZSM). Remark. The species is known exclusively from female specimens. However, having compared the illustrations of M. odontographa and M. allardi in Hacker et al. (2012: 328, 427), it seems to be highly likely that the two species are conspecific. As the author of the present paper could not locate specimens of either species for thorough examination, both taxa have tentatively been treated here as valid. It is also worth mentioning that M. inculta Hacker, 2012 described from Katanga Province, D.R. Congo and M. griseodentata Hacker, 2012 described from near Iringa, Tanzania are also confusingly similar to M. allardi both externally and in genital morphology. The female of M. inculta illustrated in Hacker et al. (2012: 332) is misidentified and is in fact M. monofascia (van Son, 1933). In order to prove whether or not the four species are conspecific, examination of further material is necessary. Distribution. Burkina Faso, Ivory Coast and Nigeria (Hacker et al. 2012).Published as part of László, Gyula M., 2020, Review of the genus Meganola Dyar, 1898 of Ivory Coast and adjacent areas with descriptions of 5 new species and several taxonomic updates (Lepidoptera Nolidae, Nolinae) - Taxonomic studies on West African Nolinae I., pp. 151-182 in Zootaxa 4853 (2) on page 158, DOI: 10.11646/zootaxa.4853.2.1, http://zenodo.org/record/441054
Ultrafine particles and size distributions from airborne experiments
No full textDataset of ultrafine particles measured during aircraft campaigns with microloght D-MIFU and Dimona VH-OBS and VH-EOS for particle budget studies
Making Sense of Growth Hacker Marketing
No full textAfter the Dotcom bust, high-technology startups are faced with the challenge in funding, particularly in Silicon Valley. Most of the entrepreneurs have technical skills but lack of marketing experiences. In order to survive, they turn to an alternative approach that highly relies on scientific experimentation to pursue rapid growth in number of users at next to zero cost within short time. It is then termed as Growth Hacker Marketing in 2010 and receives wide popularity among startups in the world. Yet, in the academic world, there is limited discussion on the topic while the similar concepts can be shown in the fields of product development and marketing. Thus, the purpose of the thesis is to develop a framework of Growth Hacker Marketing from the two perspectives. The author will study the eight representative startups and provide an integrative view on i) What differentiates Growth Hacker Marketing from other marketing approaches? ii) How do they implement Growth Hacker Marketing? To that end, a framework illustrating the basis of product development and marketing, the close interaction between them and the continuous optimization and retention will be suggested
Aboriginal artefacts on the continental shelf reveal ancient drowned cultural landscapes in northwest Australia
No full textThis article reports Australia’s first confirmed ancient underwater archaeological sites from the continental shelf, located off the Murujuga coastline in north-western Australia. Details on two underwater sites are reported: Cape Bruguieres, comprising > 260 recorded lithic artefacts at depths down to −2.4 m below sea level, and Flying Foam Passage where the find spot is associated with a submerged freshwater spring at −14 m. The sites were discovered through a purposeful research strategy designed to identify underwater targets, using an iterative process incorporating a variety of aerial and underwater remote sensing techniques and diver investigation within a predictive framework to map the submerged landscape within a depth range of 0–20 m. The condition and context of the lithic artefacts are analysed in order to unravel their depositional and taphonomic history and to corroborate their in situ position on a pre-inundation land surface, taking account of known geomorphological and climatic processes including cyclone activity that could have caused displacement and transportation from adjacent coasts. Geomorphological data and radiometric dates establish the chronological limits of the sites and demonstrate that they cannot be later than 7000 cal BP and 8500 cal BP respectively, based on the dates when they were finally submerged by sea-level rise. Comparison of underwater and onshore lithic assemblages shows differences that are consistent with this chronological interpretation. This article sets a foundation for the research strategies and technologies needed to identify archaeological targets at greater depth on the Australian continental shelf and elsewhere, building on the results presented. Emphasis is also placed on the need for legislation to better protect and manage underwater cultural heritage on the 2 million square kilometres of drowned landscapes that were once available for occupation in Australia, and where a major part of its human history must lie waiting to be discovered
Queering codes: hacker art as care
No full textO trabalho trata dos atravessamentos da chamada cultura hacker na intersecção entre arte, ciência e tecnologia. Mais especificamente, investiga como certas tecnologias da internet comercial afetaram a produção artística-tecnológica das três últimas décadas. São analisados processos de artistas como Ricardo Dominguez, Olia Lialina, Brian Mackern e Zach Blas, sob a lente da Teoria Ator-Rede e da Teoria Queer. É levado em consideração, nas análises, como as tecnologias digitais afetam processos culturais e políticos, por exemplo no surgimento de novas formas de desobediência civil não-violenta. Processos culturais como o movimento #MeToo também são discutidos, como forma de localizar arte e cultura hacker no estado da arte de outros contextos artísticos, como o audiovisual. Também são apresentados e discutidos processos artísticos envolvendo tecnologias digitais de código aberto desenvolvidos pela autora do trabalho, e como eles foram afetados pela pandemia do COVID19. As conclusões apontam para uma necessidade de complexificar a visão sobre usuáries da internet e como consomem, se expressam e inspiram o funcionamento da arte e da internet comercial.The paper deals with the crossings of the so-called hacker culture at the intersection between art, science and technology. More specifically, it investigates how certain technologies of the commercial internet have affected the artistic-technological production of the last three decades. Processes of artists such as Ricardo Dominguez, Olia Lialina, Brian Mackern and Zach Blas are analyzed, under the lens of Actor-Network Theory and Queer Theory. It takes into account how digital technologies affect cultural and political processes, for example in the emergence of new forms of non-violent civil disobedience. Cultural processes such as the #MeToo movement are also discussed, as a way to locate hacker art and culture in the state of the art of other artistic contexts, such as the audiovisual. Artistic processes involving open source digital technologies developed by the author of the paper are also presented and discussed, and how they have been affected by the COVID19 pandemic. The conclusions point to a need to complexify the view on internet users and how they consume, express themselves and inspire the functioning of art and the commercial internet.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Deutscher Akademischer Austauschdienst (DAAD)CAPES: 00
PLIS: an airborne polarimetric L-band interferometric synthetic aperture radar
No full textPLIS is an airborne synthetic aperture radar designed to be used in conjunction with a passive radiometer to collect microwave data at L-band for the remote sensing of soil moisture. The objective is to collect data to carry out a pre-deployment validation of algorithms for the NASA Soil Moisture Active Passive (SMAP) satellite. Key features of the PLIS radar are described. The ground swath of PLIS is such that the incidence angle ranges from 15 degrees from nadir on the near side of the swath to 45 degrees on the far side, resulting in an almost 3:1 variation in ground range resolution across the swath. Initial investigations into the impact of this on the statistics of backscattered data are presented. © 2011 KIEES.Doug Gray, Ruiting Yang, Heath Yardley, Jeffrey Walker, Bevan Bates, Rocco Panciera, Jorg Hacker, Andrew McGrath and Nick Stacyhttp://ieeexplore.ieee.org/xpl/articleDetails.jsp?reload=true&arnumber=6086965&contentType=Conference+Publication
Exploiting the digital frontier: hacker typology and motivation
No full textElectronic Thesis or DissertationThe current study combined the hacker taxonomies presented by Loper (2000), Parker (1998), Rege-Patwardhan (2009), and Rogers (1999; 2006; personal communication) and proposed a simplified taxonomy which included: script kiddie, cyberpunk, password cracker, internal, and old guard hacker categories. Each category was identified by its characteristic computer deviant behaviors and analyzed against sex and seven motivational factors (i.e., addiction, curiosity, excitement/entertainment, money, power/status/ego, peer recognition, ideological, and revenge). The study had two specific aims: (1) to explore which motivations were associated with each specific computer deviant behavior, and (2) to determine if more males than females are engaging in computer deviant behavior. The study targeted computer deviants from specific websites, which discussed or promoted computer deviant behavior (e.g., hacking). Using a snowball sampling method, 120 subjects completed an anonymous, self-report questionnaire that included items measuring computer deviance, motivational factors, and demographics. Relationships were identified using zero-order correlation, then a backwards (Wald) binary logistic regression was conducted to determine the predictive ability of motivational factors on the different categories of computer deviancy. None of the computer deviant behavior specific hypotheses were fully supported. The expectation that more males would be computer deviants than females was not fully supported since males were more likely to be script kiddies, cyberpunks, and old guard hackers compared to females. The findings suggested that these computer deviant behaviors overlapped in both motivational factors and the behaviors themselves. The study found that script kiddie, password cracker, and old guard hacker behaviors were all only motivated by addiction. Cyberpunk behavior was found to be motivated by financial, peer recognition, and revenge motivations, and internal computer deviant behavior was found to be related to financial and peer recognition motivations. Overall, the current study suggested that there was significant motivational and behavioral overlap between computer deviant categories, and not all computer deviants were predominately male. The author concluded that using a strict computer hacker taxonomy may not accurately reflect the true nature of computer deviant behavior
Exploiting the digital frontier: hacker typology and motivation
No full textThe current study combined the hacker taxonomies presented by Loper (2000), Parker (1998), Rege-Patwardhan (2009), and Rogers (1999; 2006; personal communication) and proposed a simplified taxonomy which included: script kiddie, cyberpunk, password cracker, internal, and old guard hacker categories. Each category was identified by its characteristic computer deviant behaviors and analyzed against sex and seven motivational factors (i.e., addiction, curiosity, excitement/entertainment, money, power/status/ego, peer recognition, ideological, and revenge). The study had two specific aims: (1) to explore which motivations were associated with each specific computer deviant behavior, and (2) to determine if more males than females are engaging in computer deviant behavior. The study targeted computer deviants from specific websites, which discussed or promoted computer deviant behavior (e.g., hacking). Using a snowball sampling method, 120 subjects completed an anonymous, self-report questionnaire that included items measuring computer deviance, motivational factors, and demographics. Relationships were identified using zero-order correlation, then a backwards (Wald) binary logistic regression was conducted to determine the predictive ability of motivational factors on the different categories of computer deviancy. None of the computer deviant behavior specific hypotheses were fully supported. The expectation that more males would be computer deviants than females was not fully supported since males were more likely to be script kiddies, cyberpunks, and old guard hackers compared to females. The findings suggested that these computer deviant behaviors overlapped in both motivational factors and the behaviors themselves. The study found that script kiddie, password cracker, and old guard hacker behaviors were all only motivated by addiction. Cyberpunk behavior was found to be motivated by financial, peer recognition, and revenge motivations, and internal computer deviant behavior was found to be related to financial and peer recognition motivations. Overall, the current study suggested that there was significant motivational and behavioral overlap between computer deviant categories, and not all computer deviants were predominately male. The author concluded that using a strict computer hacker taxonomy may not accurately reflect the true nature of computer deviant behavior. (Published By University of Alabama Libraries
NILAI PENDIDIKAN DALAM NOVEL MY LOVE IS A WHITE HACKER KARYA MAHMUD JAUHARI ALI
No full textThe problem of analyzing a novel literary work is that the mastery of every reading material must be mastered in depth each verse by verse. This is done to obtain an object of study will be examined in a study of literature. The purpose of the study are to know and analyze the educational values contained in the novel My Love Is A White Hacker by Mahmud Jauhari Ali. The method used in this study is descriptive qualitative method to analyze the value of education contained in the novel. The principal technique used by the author to collect data is by reading, understanding, and analyzing Mahmud Jauhari Ali\u27s novel, My Love Is A White Hacker. Step analysis of the data by reading the novel carefully, summarizing the content or meaning, re-reading the novel intensively, describe and analyze the values of education and draw conclusions of educational values contained in the novel. The results of the analysis of the educational value data of My Love Is A White Hacker\u27s novel by Mahmud Jauhari Ali, namely the value of social education, such as help, empathy and togetherness, the value of religious education such as gratitude, truth value, moral education value such as honesty
One Tree Reef topographic and bathymetric LiDAR digital elevation model (2018) and roughness equivalent habitat data (2023)
No full textA high-resolution LiDAR digital elevation model was developed to investigate the geomorphic features and surface roughness of a coral reef in the Southern Great Barrier (One Tree Reef). Given that there are few data sets of equivalent resolution the focus of this research was to detail the change in surface roughness expression over multiple spatial scales.
Data were collected 8 October 2018 using a Riegl VQ-820-G topo-bathymetric LiDAR combined with a Riegl Q680i-S topographic scanner and a Canon EOS 5Dmk4 DSLR on a small research aircraft (Diamond Aircraft ECO-Dimona). The whole One Tree Reef area was covered twice using two different pulse rate settings for the VQ-820-G, viz. 284kHz and 522kHz. This measurement strategy ensured maximum spatial resolution (at 522kHz) and maximum depth penetration (at 284kHz).
All LiDAR data was processed to a 0.25 m cell-size DEM using a combination of Riegl proprietary software, ARA-developed software, the RAPIDLASSO LAStools utilities, Bayesmap's StripAlign™ utility and Global Mapper V 20. Processing included human-machine interactive selection and confirmation of valid bathymetric points. The imagery from the DSLR was mosaiced at 0.14 m cell size using the AgiSoft PhotoScan© (now Metashape) Software package and overlaid onto the LiDAR point cloud. The relative error of the LiDAR point cloud was ± 0.1 m.
Two methods of characterising surface roughness were applied to the LiDAR DEM: the vector ruggedness measure (VRM) and the Multiscale Roughness (MR) tool from WhiteBox Tools. The VRM was applied over filter radii of 8, 20, 100 and 400 cells. The MR approach was conducted between filter radii of 1 – 1500 cells (≈ 0.5 to 750 m) with step intervals of 1.
MR analysis revealed the roughness signatures of the geomorphic coral reef zones defined by Roelfsema et al. (2018, doi:10.1016/j.rse.2018.02.005). Geomorphic zones with similar roughness signatures were combined to produce roughness equivalent habitats. Roughness equivalent habitats are regions with similar roughness signature that do not necessarily form geographical contiguous areas.
Data contained in this repository are: 1. The LiDAR DEM as a geotiff; 2. Roughness magnitude and scale geotiffs computed using the MultiscaleRoughness tool from Whitebox Tools and 3. The ESRI shapefiles for the roughness equivalent habitats. Further details of the results and analysis of the LiDAR DEM can be found in Harris et al. (2023, doi:/10.1016/j.geomorph.2023.108852)
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