This work deals with effects of nanoparticles, mainly copper and silver, on properities of lead-free solder pastes. It describes basic tests done on solder pastes according to IPC-TM-650 standards. In practical section this work focuses on the preparation of Sn-Bi solder paste and the measuring of viscosity. After that different concentrations of silver copper alloy nanoparticles are added to the SnBi solder paste. These solder pastes are tested by the IPC standarts and mechanical and resistive tests are done on printed circuit boards where the effects of mixed in nanoparticles are observed.

Meditation liegt im Trend. In den verschiedensten gesellschaftlichen Bereichen lässt sich diese Feststellung auch ohne eine erschöpfende Analyse nachvollziehen. Charakteristisch ist dabei in den letzten Jahren in aller Regel die Dominanz eines neurowissenschaftlichen oder -psychologischen und damit verbunden eines überwiegend gesundheitsorientierten Zugriffs auf den Gegenstand Meditation. In einem vorangegangenen Forschungsprojekt diente dieses Szenario als Ausgangslage, um religionstheoretische Implikationen der neurowissenschaftlichen Meditationsforschung herauszuarbeiten.8 In der vorliegenden Arbeit möchte ich hingegen gerade das diskursive Geflecht um das zeitgenössische Verständnis von Meditation selbst untersuchen. Dabei stellt die überwiegend neurowissenschaftliche Meditationsforschung weiterhin den Türöffner meines Zugangs dar, da sie – soweit zumindest die Annahme – als maßgeblicher Motor des aktuellen Meditationsbooms fungiert.:Verzeichnisse Abbildungsverzeichnis Tabellenverzeichnis Abkürzungsverzeichnis Sigelverzeichnis Einleitung 1 Vorüberlegungen 2 Das Netzwerk der Meditationsforschung 3 Die diskursive Formation des Meditationsdiskurses 4 Der Meditationsdiskurs als Grenzdiskurs 5 Schlussbetrachtung Literatur

Talent Management (TM) is a well-used practice to identify, attract, develop, and retain the most valuable resource in an organisation: talented employees. The concept TM emerged when organisations started to detect increased demands and technological changes in the business market. Additionally, due to the retirement of baby boomers, organisations have started to experience a shortage of talents creating “The War for Talent” (Chambers et al., 1998). However, ethical aspects create a demand for an inclusive approach of TM which includes all employees, as opposed to only focusing on a selected few. Responsible Talent Management (RTM) considers talent to be obtained and developed within the organisation. Employees who experience job satisfaction and commitment are more likely to stay in the organisation (Deery, 2008), whereas work-life balance, employee well-being, leadership, and learning have become important factorsfor increasing job satisfaction and commitment as well as employee retention (Radda et al., 2015: Deery, 2008). Especially due to new challenges associated with the working environment and social relationships in this new remote working context. Researchers express the need for further research regarding RTM as well as the inclusive approach. This thesis, therefore, aims to understand how an organisation work with TM practices to retain talented employees in a remote working context. Based on the scientific issue and the purpose, a qualitative case study was conducted. Eight employees within the HR department were interviewed using semi-structured interviews. The analysis of the empirical data identified a great need for genuine social relationships. Regardless of which TM retainment practices used, supporting employees with tools and opportunities to build and nurture social relationships may be an instrumental driver to retain talented employees in a remote working context. / Talent Management är ett välanvänt begrepp för att identifiera, attrahera, utveckla och behålla den mest värdefulla resursen i en organisation: talangfulla medarbetare. Begreppet TM blev uppmärksammat när organisationerna upptäckte ett ökat krav och teknologiska förändringar på marknaden. På grund av att generationen “babyboomers” har börjat gå i pension har organisationer börjat uppleva en brist på talang, vilket har skapat ”The War for Talent” (Chambers et al., 1998). Dock skapar de etiska aspekterna ett krav på ett inkluderande synsätt på TM som inkluderar alla anställda och inte bara fokuserar på ett fåtal utvalda. Begreppet Responsible Talent Management (RTM) anser att talang kan erhållas och utvecklas inom organisationen. Anställda som upplever jobbnöjdhet och engagemang är mer benägna att stanna kvar i organisationen (Deery, 2008), medan balans mellan arbetsliv och privatliv, anställdas välmående, ledarskap och lärande har blivit viktiga faktorer för att öka jobbnöjdhet och engagemang samt att behålla de anställda (Radda et al., 2015: Deery, 2008). Framförallt med tanke på de nya utmaningarna gällande arbetsmiljön och de sociala relationerna i den nya kontexten av distansarbete. Forskare uttrycker ett behov av vidare forskning gällande RTM och det inkluderande synsättet. Syftet med uppsatsen är att förstå hur en organisation arbetar med aktiviteter inom TM för att behålla talangfulla medarbetare i en kontext av distansarbete. Baserat på forskningsproblemet och syftet har en kvalitativ fallstudie utförts. Åtta anställda tillhörande HR-avdelningen har intervjuats genom semistrukturerade intervjuer. I analysen av empirin identifierades ett stort behov av genuina sociala relationer. Oavsett vilka aktiviteter inom TM som organisationen använder för att behålla talanger, så uppfattas organisationens stöd i termer av olika verktyg och möjligheter för att skapa och vårda sociala relationer, vara en stark drivkraft för att behålla talangfull kompetens i en kontext av distansarbete.

Widespread mortality of quaking aspen (Populus tremuloides Michx.) has occurred over large expanses of the Western US during the 20th century. While much of this decline was due to conifer encroachment into seral aspen, significant aspen losses also occurred in areas of persistent aspen and may have been exasperated by drought conditions. Aspen decline has been especially notable at Cedar Mountain, Utah, an area of mostly private land and extensive persistent aspen coverage. The objectives of this study were to create a time series of live and dead aspen cover on the Cedar Mountain landscape, using remotely sensed imagery, and to test whether water stress correlated to the decline therein. To accomplish these objectives, a decision tree classifier was used to classify the Cedar Mountain area into live and dead aspen cover classes for the years 1985, 1990, 1995, 2001, 2005, and 2008. Thereafter, post-classification change analysis was performed to determine areas and time periods of elevated decline. Regression analyses were performed to ascertain correlations between climatic data and percent change in aspen cover. A topographic analysis using zonal statistics was also performed to determine landscape positions where aspen decline is more prevalent. The time series models indicated that aspen decline followed a step-wise pattern with an overall decrease of 23.57 % in aspen cover during a 23-year period. Considerable aspen decline occurred early in the study time frame, with decreases of 1.38 and 1.36 -1 in 1990 and 1995, respectively. The middle period between 1995 and 2001 had no net change in aspen cover. However, the end of the time series showed the greatest decline with decreases of 1.56 and 1.99 % yr-1 in 2005 and 2008, respectively. There was a correlation between percent change in aspen cover and precipitation, suggesting that drought weakens aspen, making it susceptible to future decline. The topographic zonal statistics revealed that drier landscape positions had greater frequencies of dead aspen. The most significant predictor of aspen decline was elevation, which was significantly greater in the live aspen for three of the five years.

This master's thesis deals with acceleration of pixel interpolation methods using the GPU and NVIDIA (R) CUDA TM architecture. Graphic output is represented by a demonstrational application for geometrical image transforms using chosen interpolation method. Time critical parts of the code are moved on the GPU and executed in parallel. There are used highly optimized routines from the OpenCV library, made by the Intel company for an image and video processing.

No description available.

Quizalofop and florpyrauxifen-benzyl are both new herbicides for rice in the midsouthern U.S. Quizalofop is only effective for control of monocot weed species; therefore, mixtures of florpyrauxifen-benzyl with quizalofop could be beneficial in acetyl CoA carboxylase (ACCase)-resistant rice. Field experiments were conducted at the Delta Research and Extension Center in Stoneville, MS, in 2017 and 2018 to evaluate control of monocot and dicot weed species with sequential applications of quizalofop including auxinic herbicides in the first or second treatment. Other field experiments in 2017 and 2018 evaluated sequential applications of different rates of quizalofop with florpyrauxifen-benzyl included in treatments immediately prior to flooding. A final field experiment in 2017 and 2018 evaluated growth and yield of six ACCase-resistant rice cultivars and advanced lines following POST applications of florpyrauxifen-benzyl.

No description available.

No / Evaluation of drug candidates in in-vitro assays of action potential duration (APD) is one component of preclinical safety assessment. Current assays are limited by technically-demanding, time-consuming electrophysiological methods. This study aimed to assess whether a voltage-sensitive dye-based assay could be used instead. Methods Optical APs were recorded using di-4-ANEPPS in electrically field stimulated Beagle left ventricular midmyocardial myocytes (LVMMs). Pharmacological properties of di-4-ANEPPS on the main cardiac ion channels that shape the ventricular AP were investigated using IonWorks™ and conventional electrophysiology. Effects of 9 reference drugs (dofetilide, E4031, d-sotalol, ATXII, cisapride, terfenadine, alfuzosin, diltiazem and pinacidil) with known APD-modulating effects were assessed on optically measured APD at 1 Hz. Results Under optimum conditions, 0.1 μM di-4-ANEPPS could be used to monitor APs paced at 1 Hz during nine, 5 s exposures without altering APD. di-4-ANEPPS had no effect on either hIERG, hINa, hIKs and hIto currents in transfected CHO cells (up to 10 µM) or ICa,L current in LVMMs (at 16 µM). di-4-ANEPPS had no effect on APs recorded with microelectrodes at 1 or 0.5 Hz over a period of 30 min di-4-ANEPPS displayed the sensitivity to record changes in optically measured APD in response to altered pacing frequencies and sequential vehicle additions did not affect the optically measured APD. APD data obtained with 9 reference drugs were as expected except (i) d-sotalol-induced increases in duration were smaller than those caused by other IKr blockers and (ii) increases in APD were not detected using low concentrations of terfenadine. Discussion Early in drug discovery, the di-4-ANEPPS-based method can reliably be used to assess drug effects on APD as part of a cardiac risk assessment strategy.

Durch den zunehmenden Einsatz fahrdynamischer Regelsysteme und der Fahrzeugauslegung im Grenzbereich gewinnt die Modellierung des Reifenübertragungsverhaltens bei transienten und extremen Fahrmanövern signifikant an Bedeutung. Die im Rahmen dieser Arbeit neu entwickelten Messverfahren zur Analyse und Charakterisierung des transienten Reifenseitenkraftverhaltens zeigen, dass die bisher gewählten Verzögerungsansätze erster Ordnung, beschrieben durch die Einlauflänge, keine ausreichende Abbildungsgenauigkeit liefern. Folglich wird ein neuer Verzögerungsansatz zweiter Ordnung eingeführt und durch den Parameter Einlaufdämpfung zweckmäßig beschrieben. Weiterhin wird nachgewiesen, dass die allgemein gebräuchliche Schätzung der Einlauflänge aus Schräglaufsteifigkeit und Lateralsteifigkeit vor allem bei hohen Radlasten deutlich zu geringe Werte liefert. Zur Abdeckung eines möglichst breiten Anwendungsbereichs werden die Parametereinflüsse Radlast, Fülldruck, Sturz, Vorspur und Geschwindigkeit messtechnisch ermittelt und im neuen Modellansatz berücksichtigt. Auch für die quasistatische Schräglaufsteifigkeit wird ein neues Bestimmungsverfahren mit entsprechenden Einflussanalysen vorgestellt. Bei extremen Fahrmanövern spielt die Fahrzeugstabilität, welche hochsensitiv auf das Reifenverhalten unter Extrembelastungen reagiert, eine entscheidende Rolle. Auch für diesen Anwendungsfall werden neue Mess‐ und Parametrisierungsverfahren eingeführt. Im Gegensatz zu anderen Arbeiten wird auf den gesamten Entstehungsprozess von Reifenmodelldatensätzen eingegangen. Dieser besteht im Wesentlichen aus Reifenmessung, Signalverarbeitung, Auswahl charakteristischer Kennlinien, methodischer Reifenmodellauswahl, automatischer Parameteridentifikation und qualitativem sowie quantitativem Nachweis der Abbildungsgüte des entstandenen Datensatzes. In diesem Prozess werden Schwachstellen aufgezeigt und durch neue Methoden beseitigt. Die drei Reifenmodelle MF-Tyre, FTire und TM-Easy werden analysiert, parametrisiert und unter transienten und extremen Randbedingungen in Kombination mit MKS-Modellen validiert und getestet. Somit kann die Qualität der erzielten Ergebnisse im Verhältnis zum Parametrisierungsaufwand und der Prozesssicherheit für eine Einsatzempfehlung der verschiedenen Reifenmodelle herangeführt werden. Die Qualität der neuen Reifenmodelldatensätze in Verbindung mit der Radaufhängung wird anhand eines neu entwickelten hochdynamischen Achsprüfstandes durch den Vergleich von Messung und MKS-Simulation validiert. Dazu werden sowohl transiente als auch extreme Manöver mit deren realistischen Belastungssituationen nachgestellt. Auch der Einfluss auf die Gesamtfahrzeugsimulation wird anhand entsprechender Manöver nachgewiesen. Darüber hinaus erfolgt die Herleitung eines linearen Einspurmodells mit transientem Reifenseitenkraftverhalten im Zustandsraum, anhand dessen der dominante Reifeneinfluss auf die Gierreaktion von Fahrzeugen nachgewiesen wird. / Due to the growing influence of vehicle dynamic control systems and suspension dimensioning in stability regions, transient and extreme tyre transfer behaviour gains importance significantly. Two new measurement procedures are introduced to analyze and characterize this tyre behaviour. The results show that the commonly used estimation of the relaxation length by the quotient of cornering and lateral stiffness yields far too small values and that the first order transfer model is insufficient to describe the transient tyre lateral force behaviour. Consequently, a new second order approach is introduced and described by the new parameter relaxation damping. The performed parameter study regarding wheel load, inflation pressure, camber angle, toe angle and driving velocity covers a wide application range of tyres. Moreover, the quasi‐static cornering stiffness is measured and evaluated in an extended range with reduced temperature and wear influences. Extreme manoeuvres are utilized to examine the stability of vehicles, which is dominated by the tyre transfer behaviour under extreme conditions. A new measurement and parameter identification procedure for those conditions is portrayed, as well. This thesis depicts the entire process to obtain a tyre model dataset, namely tyre measurements, signal processing, selection of characteristic curves, methodical selection of a tyre model, automatic parameter identification and qualitative and quantitative evaluation of the final dataset. The tyre models MF‐Tyre, FTire, and TM‐Easy are analysed, parameterized and validated under transient and extreme conditions. A comparison of the results in relation to the complexity of the parameter identification and the process stability leads to global recommendations of applications for different tyre models. The quality of the created tyre model datasets in combination with a vehicle suspension is assessed by a comparison of measurements from the newly developed highly dynamical suspension test rig and equivalent multi‐body simulations. That is, transient and extreme manoeuvres are performed and analysed. Additionally, a linear single‐track model with transient tyre behaviour is been derived, that shows the dominant tyre influence on the vehicle’s yaw behaviour. Finally, the influence of the created tyre model datasets and the additional lateral transfer behaviour on full‐vehicle simulations is verified.