432 research outputs found
A Preliminary Examination of Stressors in Information Systems Personnel
The impact of stress on information systems (IS) personnel has been noted in several recent practitioner articles (McGee, 1996). However, no empirical studies have been conducted to identify stressors for information systems personnel. This research reports the results of three studies designed to examine and measure factors which cause stress in IS personnel. In the first study, data collected from 38 IS employees in an insurance company was analyzed for specific stress factors.In the second study, an openended questionnaire was filled out by another 30 employees of the same company. In the third study, a final questionnaire was administered to 187 IS professionals. Data collected from the survey resulted in the identification of 12 distinct stress factors. A secondorder factor analysis identified three factors related to users, time constraints, and the work environmen
The Multidimensional Nature of Organizational Commitment Among Information Systems Personnel
Two distinct views of organizational commitment are examined in this study. Affective commitment describes an employee\u27s emotional attachment to, identification with, and involvement in the organization. Continuance commitment is a behavioral view of commitment and describes an attachment to an organization based on side-bets, or extraneous interests, such as pensions and seniority, which create costs in leaving an organization. These two dimensions are empirically examined for the case of 312 information systems (IS) employees. These findings demonstrate the importance of distinguishing between commitment based on a desire to stay in an organization and commitment based on a need to stay because of other factors, as well as the importance of fostering affective commitment in organizations
Modelling and validation of Selective Laser sintering of PA12
One of the larger growing fields within additive manufacturing is the selective laser sintering process of semi-crystalline polymer powders. The powder is locally fused at certain areas, due to the energy output of a laser. This method allows for rapid production of complex parts, which are well suited for prototyping. The overall accuracy and stability of the process along with part properties are highly related to the process parameter. A better control of these parameters will therefore optimize the process even further. The current paper propos a numerical modelling approach and the model makes it possible, to analyze the influence of the laser-related input parameters concerning the temperature distribution and size of the melt pool. For the validation, certain outputs from the model are compared to the ones found from experimental single-line track data, where the melt pool geometry can be compared to the numerical measurements
Dark Patterns after the GDPR: Scraping Consent Pop-ups and Demonstrating their Influence
New consent management platforms (CMPs) have been introduced to the web to
conform with the EU's General Data Protection Regulation, particularly its
requirements for consent when companies collect and process users' personal
data. This work analyses how the most prevalent CMP designs affect people's
consent choices. We scraped the designs of the five most popular CMPs on the
top 10,000 websites in the UK (n=680). We found that dark patterns and implied
consent are ubiquitous; only 11.8% meet the minimal requirements that we set
based on European law. Second, we conducted a field experiment with 40
participants to investigate how the eight most common designs affect consent
choices. We found that notification style (banner or barrier) has no effect;
removing the opt-out button from the first page increases consent by 22--23
percentage points; and providing more granular controls on the first page
decreases consent by 8--20 percentage points. This study provides an empirical
basis for the necessary regulatory action to enforce the GDPR, in particular
the possibility of focusing on the centralised, third-party CMP services as an
effective way to increase compliance.Comment: 13 pages, 3 figures. To appear in the Proceedings of CHI '20 CHI
Conference on Human Factors in Computing Systems, April 25--30, 2020,
Honolulu, HI, US
The chlorite proximitor: A new tool for detecting porphyry ore deposits
publisher: Elsevier articletitle: The chlorite proximitor: A new tool for detecting porphyry ore deposits journaltitle: Journal of Geochemical Exploration articlelink: http://dx.doi.org/10.1016/j.gexplo.2015.01.005 content_type: article copyright: Crown copyright © 2015 Published by Elsevier B.V.Copyright © 2016 Elsevier B.V. or its licensors or contributors. ScienceDirect ® is a registered trademark of Elsevier B.V. [Creative Commons License 4.0]. The attached file is the published version of the article
Single-laser 32.5 Tbit/s Nyquist WDM transmission
We demonstrate 32.5 Tbit/s 16QAM Nyquist WDM transmission over a total length
of 227 km of SMF-28 without optical dispersion compensation. A number of 325
optical carriers are derived from a single laser and encoded with
dual-polarization 16QAM data using sinc-shaped Nyquist pulses. As we use no
guard bands, the carriers have a spacing of 12.5 GHz equal to the Nyquist
bandwidth of the data. We achieve a high net spectral efficiency of 6.4
bit/s/Hz using a software-defined transmitter which generates the electrical
modulator drive signals in real-time.Comment: (c) 2012 Optical Society of America. One print or electronic copy may
be made for personal use only. Systematic reproduction and distribution,
duplication of any material in this paper for a fee or for commercial
purposes, or modifications of the content of this paper are prohibite
An Early Cretaceous carbonate replacement origin for the Xinqiao stratabound massive sulfide deposit, Middle-Lower Yangtze Metallogenic Belt, China
Guidance for Developers of Health Research Reporting Guidelines
David Moher and colleagues from the EQUATOR network offer guidance and recommended steps for developing health research reporting guidelines
Beyond the Global Brain Differences:Intraindividual Variability Differences in 1q21.1 Distal and 15q11.2 BP1-BP2 Deletion Carriers
BACKGROUND: Carriers of the 1q21.1 distal and 15q11.2 BP1-BP2 copy number variants exhibit regional and globalbrain differences compared with noncarriers. However, interpreting regional differences is challenging if a globaldifference drives the regional brain differences. Intraindividual variability measures can be used to test for regionaldifferences beyond global differences in brain structure.METHODS: Magnetic resonance imaging data were used to obtain regional brain values for 1q21.1 distal deletion (n =30) and duplication (n = 27) and 15q11.2 BP1-BP2 deletion (n = 170) and duplication (n = 243) carriers and matchednoncarriers (n = 2350). Regional intra-deviation scores, i.e., the standardized difference between an individual’sregional difference and global difference, were used to test for regional differences that diverge from the globaldifference.RESULTS: For the 1q21.1 distal deletion carriers, cortical surface area for regions in the medial visual cortex, posterior cingulate, and temporal pole differed less and regions in the prefrontal and superior temporal cortex differedmore than the global difference in cortical surface area. For the 15q11.2 BP1-BP2 deletion carriers, cortical thicknessin regions in the medial visual cortex, auditory cortex, and temporal pole differed less and the prefrontal andsomatosensory cortex differed more than the global difference in cortical thickness.CONCLUSIONS: We find evidence for regional effects beyond differences in global brain measures in 1q21.1 distaland 15q11.2 BP1-BP2 copy number variants. The results provide new insight into brain profiling of the 1q21.1 distaland 15q11.2 BP1-BP2 copy number variants, with the potential to increase understanding of the mechanismsinvolved in altered neurodevelopment
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