Sex mediates the effects of high-definition transcranial direct current stimulation on "Mind-Reading". - In: Neuroscience, ISSN 1873-7544, Bd. 366 (2017), S. 84-94
https://doi.org/10.1016/j.neuroscience.2017.10.005
Indoor localization: novel RSSI approach based on analytical solution and two receivers. - In: Journal of sensors and sensor systems, ISSN 2194-878X, Bd. 6 (2017), 2, S. 375-380
https://doi.org/10.5194/jsss-6-375-2017
Scanning method for indoor localization using the RSSI approach. - In: Journal of sensors and sensor systems, ISSN 2194-878X, Bd. 6 (2017), 1, S. 247-251
This paper presents a scanning method for indoor mobile robot localization using the received signal strength indicator (RSSI) approach. The method eliminates the main drawback of the conventional fingerprint, whose database construction is time-consuming and which needs to be rebuilt every time a change in indoor environment occurs. It directly compares the column vectors of a kernel matrix and signal strength vector using the Euclidean distance as a metric. The highest resolution available in localization using a fingerprint is restricted by a resolution of a set of measurements performed prior to localization. In contrast, resolution using the scanning method can be easily changed using a denser grid of potential sources. Although slightly slower than the trilateration method, the scanning method outperforms it in terms of accuracy, and yields a reconstruction error of only 0. 08 m averaged over 1600 considered source points in a room with dimensions 9.7 m × 4.7 m × 3 m. Its localization time of 0. 39 s makes this method suitable for real-time localization and tracking.
https://doi.org/10.5194/jsss-6-247-2017
Acquiring and preprocessing leaf images for automated plant identification: understanding the tradeoff between effort and information gain. - In: Plant methods, ISSN 1746-4811, 13 (2017), article number 97, Seite 1-11
https://doi.org/10.1186/s13007-017-0245-8
Low intensity transcranial electric stimulation: safety, ethical, legal regulatory and application guidelines. - In: Clinical neurophysiology, ISSN 1872-8952, Bd. 128 (2017), 9, S. 1474-1809
https://doi.org/10.1016/j.clinph.2017.06.001
Modeling hypothermia induced effects for the heterogeneous ventricular tissue from cellular level to the impact on the ECG. - In: PLOS ONE, ISSN 1932-6203, Bd. 12 (2017), 8, e0182979, insges. 22 S.
https://doi.org/10.1371/journal.pone.0182979
Preventing defects: the impact of requirements traceability completeness on software quality. - In: IEEE transactions on software engineering, ISSN 1939-3520, Bd. 43 (2017), 8, S. 777-797
Requirements traceability has long been recognized as an important quality of a well-engineered system. Among stakeholders, traceability is often unpopular due to the unclear benefits. In fact, little evidence exists regarding the expected traceability benefits. There is a need for empirical work that studies the effect of traceability. In this paper, we focus on the four main requirements implementation supporting activities that utilize traceability. For each activity, we propose generalized traceability completeness measures. In a defined process, we selected 24 medium to large-scale open-source projects. For each software project, we quantified the degree to which a studied development activity was enabled by existing traceability with the proposed measures. We analyzed that data in a multi-level Poisson regression analysis. We found that the degree of traceability completeness for three of the studied activities significantly affects software quality, which we quantified as defect rate. Our results provide for the first time empirical evidence that more complete traceability decreases the expected defect rate in the developed software. The strong impact of traceability completeness on the defect rate suggests that traceability is of great practical value for any kind of software development project, even if traceability is not mandated by a standard or regulation
https://doi.org/10.1109/TSE.2016.2622264
Lead field theory provides a powerful tool for designing microelectrode array impedance measurements for biological cell detection and observation. - In: Biomedical engineering online, ISSN 1475-925X, Bd. 16 (2017), 85, S. 1-17
https://doi.org/10.1186/s12938-017-0372-5
Versatile synchronized real-time MEG hardware controller for large-scale fast data acquisition. - In: Review of scientific instruments, ISSN 1089-7623, Bd. 88 (2017), 5, S. 055110, insges. 10 S.
http://dx.doi.org/10.1063/1.4983080
Current density reconstructions for Lorentz force evaluation. - In: Research in nondestructive evaluation, ISSN 1432-2110, Bd. 28 (2017), 2, S. 76-100
The detection and reconstruction of fatigue fractures is of great interest in quality assurance. In the framework of nondestructive testing, Lorentz force evaluation (LFE) is an evaluation technique to estimate flaws in electrically conductive materials based on measured Lorentz forces. In the forward solution for LFE, a defect can be interpreted as a distributed current source. This has motivated the authors to propose current density reconstructions (CDRs) calculated with minimum norm estimates to estimate defect geometries. The L1 and L2 norms tend to produce a solution which is either very focused or very smeared. To balance these constraints, the general Lp norm with 1 ≤ p ≤ 2 was used and the inverse solutions compared. This approach was applied to measured data obtained from a laminated composite and simulated data from a monolithic material. The results show that the L1.5 norm provides the most accurate inverse solutions. The location and extent of the defect are determined with an error of 15 % relative to the size of the defect. The depth estimation has a deviation of 50 %. It can be concluded that CDRs are a powerful method to reconstruct and characterize defects in LFE.
http://dx.doi.org/10.1080/09349847.2015.1111483