2,026 research outputs found
Ask questions, get sales : close the deak and create long-term relationships / Stephan Schiffman.
No full textIncludes index.v, 168 pages ;In Ask Questions, Get Sales, the author and sales guru Stephan Schiffman helps readers boost their careers to the gold-medal level by teaching them how to strengthen their questioning skills during the sales process. The premise is simple yet effective: In order to be successful, salespeople need to change their mindset from "need-orientated" to "do-orientated". The message of the book centers around six core "do" questions: What do you do? How do you do it? When and where do you do it? Why do you do it that way? Who do you do it with? How can we help you do it better? With this indispensable guide in their briefcase, salespeople will have information at the ready to score big sales over the short term and the long term
Unemployment Benefits and Unemployment Rates of Low-Skilled and Elder Workers in West Germany: A Search Equilibrium Approach
No full textApproach Author & abstract Download 16 References 1 Citations Related works & more Corrections Author Listed: Launov, Andrey ([email protected]) (University of Kent) Wolff, Joachim ([email protected]) (Institute for Employment Research (IAB), Nuremberg) Klasen, Stephan ([email protected]) (University of Göttingen) Registered: Stephan Klasen Abstract In this paper we investigate whether the extension of the entitlement to unemployment benefits in the mid 80s can explain the increase in the unemployment rates of unskilled and elder workers in western Germany. To answer this question we estimate a version of the Burdett-Mortensen search equilibrium model and analyze how workers’ search behaviour responded to these reforms. We try both nonparametric and fully-parametric estimation methods and identify the cases in which the nonparametric approach cannot be applied. We find that the entitlement reforms are largely responsible for the increase of unemployment among unskilled workers
Unemployment Benefits and Unemployment Rates of Low-Skilled and Elder Workers in West Germany: A Search Equilibrium Approach
No full textApproach Author & abstract Download 16 References 1 Citations Related works & more Corrections Author Listed: Launov, Andrey ([email protected]) (University of Kent) Wolff, Joachim ([email protected]) (Institute for Employment Research (IAB), Nuremberg) Klasen, Stephan ([email protected]) (University of Göttingen) Registered: Stephan Klasen Abstract In this paper we investigate whether the extension of the entitlement to unemployment benefits in the mid 80s can explain the increase in the unemployment rates of unskilled and elder workers in western Germany. To answer this question we estimate a version of the Burdett-Mortensen search equilibrium model and analyze how workers’ search behaviour responded to these reforms. We try both nonparametric and fully-parametric estimation methods and identify the cases in which the nonparametric approach cannot be applied. We find that the entitlement reforms are largely responsible for the increase of unemployment among unskilled workers
Impedance change and capacity fade of lithium nickel manganese cobalt oxide-based batteries during calendar aging
No full textThe calendar aging of commercial 18650 lithium-ion batteries with lithium nickel manganese cobalt oxide cathode and graphite anode is studied by regular electrochemical characterization of batteries stored at defined conditions. The cell capacity is found to decrease linearly with time and shows a faster decrease at higher storage temperatures. From current pulse tests, it is determined that both higher temperature and higher state of charge (SOC) cause accelerated resistance increase with storage time. Changes in different battery parameters during storage are also quantified by analyzing electrochemical impedance spectroscopy (EIS) spectra. The cell degradation causes a gradual increase of the ohmic and the total polarization resistance with storage duration, where the latter one is found to be the main contributor to the increased cell impedance. An increase in the mean relaxation time constant and changes in the porous structure for the electrode processes are observed from EIS analysis. Resistance for this cell chemistry is found to be current independent by comparing the cell resistance calculated from the current pulse method after 1s and from the EIS analysis at 1 Hz. Furthermore, it is seen that the additional charge throughput due to the periodic electrochemical characterization induces significant cell degradation effects
Measuring Vulnerability to Poverty Using Long-Term Panel Data
No full textMeasuring Vulnerability to Poverty Using Long-Term Panel Data Author & abstract Download & other version 16 References 4 Citations Related works & more Corrections Author Listed: Katja Landau (Georg-August-University Göttingen) Stephan Klasen (Georg-August-University Göttingen) Walter Zucchini (Georg-August-University Göttingen) Registered: Stephan Klasen Abstract We investigate the accuracy of ex ante assessments of vulnerability to income poverty using cross-sectional data and panel data. We use long-term panel data from Germany and apply di fferent regression models, based on household covariates and previous-year equivalence income, to classify a household as vulnerable or not. Predictive performance is assessed using the Receiver Operating Characteristics (ROC), which takes account of false positive as well as true positive rates. Estimates based on cross-sectional data are much less accurate than those based on panel data, but for Germany, the accuracy of vulnerability predictions is limited even when panel data are used. In part this low accuracy is due to low poverty incidence and high mobility in and out of poverty
Measuring Vulnerability to Poverty Using Long-Term Panel Data
No full textMeasuring Vulnerability to Poverty Using Long-Term Panel Data Author & abstract Download & other version 16 References 4 Citations Related works & more Corrections Author Listed: Katja Landau (Georg-August-University Göttingen) Stephan Klasen (Georg-August-University Göttingen) Walter Zucchini (Georg-August-University Göttingen) Registered: Stephan Klasen Abstract We investigate the accuracy of ex ante assessments of vulnerability to income poverty using cross-sectional data and panel data. We use long-term panel data from Germany and apply di fferent regression models, based on household covariates and previous-year equivalence income, to classify a household as vulnerable or not. Predictive performance is assessed using the Receiver Operating Characteristics (ROC), which takes account of false positive as well as true positive rates. Estimates based on cross-sectional data are much less accurate than those based on panel data, but for Germany, the accuracy of vulnerability predictions is limited even when panel data are used. In part this low accuracy is due to low poverty incidence and high mobility in and out of poverty
Artenschutz durch umweltverträgliche Beleuchtung
No full textEnvironmentally friendly lighting and traffic safety are two aspects of outdoor lighting that at first glance seem to contradict each other. The project `Species Protection through Environmentally Friendly Lighting` can take a closer look at the fact that this does not have to be the case. Through the participation of researchers from the IGB and the TU Berlin, interdisciplinary knowledge from the fields of biology, agriculture, ecology and lighting technology can flow together, so that in the end a scientifically supported decision-making aid for outdoor lighting is available. Therefore, the attraction of light to insects from luminous intensity distributions of ordinary luminaires, like the ones of the four project regions will be compared to the highly restricted luminous intensity distribution of the new developed luminaires. The physical limits of insect friendly luminaires will be examined and analyzed with LightTools
Vereinfachte lichttechnische Vermessung der ortsfesten Straßenbeleuchtung bei Dunkelheitsunfällen
No full textBereits 1992 stellte die Commission Internationale de l‘Éclairage (CIE) einen statistisch signifikanten Zusammenhang zwischen Straßenbeleuchtung und Unfallhäufigkeit fest [1]. Auch Untersuchungen des Fachgebietes Lichttechnik an der TU Berlin weisen auf einen Zusammenhang zwischen Unfallzahlen und Straßenbeleuchtung hin [2] [3]. Zur Senkung jener Verkehrsunfälle, welche vermutlich aus einer unzureichenden Beleuchtung resultieren, müssen diese Verkehrsorte zuerst durch photometrische Messungen identifiziert werden. Daher sollte zukünftig an Unfallorten eine routinemäßige Überprüfung der Einhaltung der normativen Vorgaben zur Straßenbeleuchtung (DIN EN 13201) erfolgen. Gängige Messgeräte/verfahren, die dies ermöglichen, sind teuer und/oder brauchen viel Zeit in der Anwendung. In dem von der Bundesanstalt für Straßenwesen finanzierten Projekt wurden deshalb folgende drei, vereinfachte Messverfahren entwickelt: 1.Ein elektrisches Fahrzeug zur Messung der Beleuchtungsstärkeverteilung,welches über eine Webapplikation gesteuert wird. 2.Ein Leuchtdichtenormal, mit dessen Hilfe eine Abschätzung derFahrbahnleuchtdichte ermöglicht wird. 3.Die Kalibrierung einer Digitalkamera zur Messung von Leuchtdichten
Entwicklung von Straßenbeleuchtungskonzepten mittels LED-Technik zur Verbesserung der visuellen Wahrnehmung von Radfahrern
No full textRadfahrende im Straßenverkehr sind durch den motorisierten Verkehr besonders gefährdet. Eine Ursache für ihr Sicherheitsrisiko ist die verminderte Sichtbarkeit bei unzureichender Straßenbeleuchtung. Das Forschungsvorhaben der TU Berlin untersucht die Auswirkungen bestehender Beleuchtungsvorgaben für Radwege auf die Sichtbarkeit von Radfahrenden und prüft die Notwendigkeit neuer Planungsparameter. Hierfür wurden photometrische Messungen an Unfallorten durchgeführt. Die Auswertung der Daten zeigt, dass die Einhaltung der normativen Beleuchtungsvorgaben nicht immer gewährleistet ist. Niedrige Visibility Level deuten auf eine unzureichende Sichtbarkeit hin. Im Rahmen des Projektes werden neue photometrische Parameter entwickelt, die eine sichtbarkeitsbasierte Beleuchtungsplanung ermöglichen
Entwicklung einer 4-Kanal Straßenleuchte zur wissenschaftlichen Untersuchung einer nutzflächenbezogenen Beleuchtung
No full textKlimaschutz oder Sicherheit? Geht beides? Um Flora und Fauna bestmöglich zu schützen müssten wir die öffentliche Beleuchtung nachts ganz ausschalten. Dies entspräche allerdings nicht unserem Bedürfnis nach Sicherheit. Mit der Entwicklung einer 4-Kanal-LED-Straßenleuchte soll zusätzlich zum zeitlich dynamischen Licht auch örtlich adaptiv beleuchtet werden. Dieses Paper stellt ein Versuchsdesign vor, mit welchem die Dimmlevel der Straßennutzflächen optimiert werden sollen und das Randbeleuchtungsstärkeverhältnis neu untersucht werden soll. Dabei werden sowohl quantitative, als auch qualitative Empfehlungen für die Straßenbeleuchtung aufgenommen, mit Virtual Reality untersucht und in einer realen Feldstudie validiert
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