Search results for: D. Westphal

Items from 1 to 20 out of 48 results

article

Birds of a feather flock (even more) together: An intergroup relations perspective on how #MeToo‐related media coverage affects the evaluation of prospective corporate directors

Michael K. Bednar, James D. Westphal, Michael L. McDonald

Strategic Management Journal > 43 > 11 > 2313 - 2350

Research Summary This study examines how incumbent director reactions to media coverage of the #MeToo movement have impacted the evaluation of prospective corporate directors. We argue that heightened intergroup anxiety related to male–female interactions leads incumbents to seize on social attributes that bolster category‐based trust in the reliability of prospective directors' interpersonal behavior...

article

High tumour mutational burden and EGFR/MAPK pathway activation are therapeutic targets in metastatic porocarcinoma*

D. Westphal, M. Garzarolli, M. Sergon, P. Horak, more

British Journal of Dermatology > 185 > 6 > 1186 - 1199

Background Eccrine porocarcinoma (EPC) is a rare skin cancer arising from the eccrine sweat glands. Due to the lack of effective therapies, metastasis is associated with a high mortality rate. Objectives To investigate the drivers of EPC progression. Methods We carried out genomic and transcriptomic profiling of metastatic EPC (mEPC), validation of the observed alterations in an EPC patient‐derived...

article

Structural power, corporate strategy, and performance

David H. Zhu, James D. Westphal

Strategic Management Journal > 42 > 3 > 624 - 651

Research Summary We develop a structural theory of power to explain how an organization is indirectly influenced by others through intermediaries. Our theory begins by explaining why an organization can improve its power position by acquiring partners that have direct advantages over it. We then propose the construct of indirect disadvantage to explain why an organization is motivated to acquire...

article

Gene expression profiling in aggressive digital papillary adenocarcinoma sheds light on the architecture of a rare sweat gland carcinoma

H.M. Surowy, A.K. Giesen, J. Otte, R. Büttner, more

British Journal of Dermatology > 180 > 5 > 1150 - 1160

Background Sweat gland carcinomas are rare cutaneous adnexal malignancies. Aggressive digital papillary adenocarcinoma (ADPA) represents a very rare subentity, thought to arise almost exclusively from the sweat glands of the fingers and toes. The aetiology of sweat gland carcinomas and ADPA is largely unknown. ADPAs are most likely driven by somatic mutations. However, somatic mutation patterns are...

article

A versatile liquid‐jet setup for the European XFEL

J. Schulz, J. Bielecki, R. B. Doak, K. Dörner, more

Journal of Synchrotron Radiation > 26 > 2 > 339 - 345

The SPB/SFX instrument of the European XFEL provides unique possibilities for high‐throughput serial femtosecond crystallography. This publication presents the liquid‐jet sample delivery setup of this instrument. The setup is compatible with state‐of‐the‐art gas dynamic virtual nozzle systems as well as high‐viscosity extruders and provides space and flexibility for other liquid injection devices...

article

Under the radar: How firms manage competitive uncertainty by appointing friends of other chief executive officers to their boards

James D. Westphal, David H. Zhu

Strategic Management Journal > 40 > 1 > 79 - 107

Research Summary In this study, we reveal a previously unstudied type of board tie that may help firms manage competitive uncertainty. While firms face regulatory barriers to the use of board interlock ties as a strategy for reducing competition, we suggest that firms can circumvent these barriers by appointing the friends of competitors' chief executive officers (CEOs) to their boards. Our theoretical...

chapter

Evolutionary Computations for Design Optimization and Test Automation in VLSI Circuits

A. K. Palit, K. K. Duganapalli, K. Zielinski, D. Westphal, more

Studies in Computational Intelligence > Success in Evolutionary Computation > Applications > 285-311

Evolutionary Computation (EC) mimics the process of natural evolution, and particularly its versions known as Genetic Algorithms (GAs) and Differential Evolution (DE) help engineers and researchers to optimize their designs using the Darwin's principle of “survival of the fittest”. These optimization principles are very frequently used in electronics for design of complex electronic systems such as...

article

Predicting organizational identification at the CEO level

Donald Lange, Steven Boivie, James D. Westphal

Strategic Management Journal > 36 > 8 > 1224 - 1244

To develop further insight into antecedents of the CEO's psychological orientation toward the firm, we investigate what might lead CEOs to identify with their firms. Although research suggests that CEO organizational identification can be quite consequential for the firm, little research attention has been paid to its determinants. To predict how the special context of the CEO position might lead to identification, we consider a set of motives that members have for identifying with their organizations and consider how unique features of the CEO position might be relevant to those motives. Our theory and supportive findings help explain how the context of the CEO position, including variables often conceptualized as control mechanisms in agency theory research, can have important effects on subsequent CEO organizational identification...

article

P.1.e.020 Neural correlates of inspiratory breathing restriction: an fMRI pilot study

N. Maslowski, A. Huber, D. Westphal, H.U. Wittchen, more

European Neuropsychopharmacology > 2012 > 22 > Supplement 2 > S203-S204

article

Unintended agency: Impression management support as a trigger of institutional change in corporate governance

James D. Westphal, Sun Hyun Park

Research in Organizational Behavior > 2012 > 32 > Complete > 23-46

In this paper we describe an emergent process of institutional change in which institutional entrepreneurs are unintentional contributors to the change process. Our theory suggests how change in the predominant institutional logic of corporate governance at public U.S. companies resulted not from deliberate attempts by corporate leaders to change the criteria by which governance is evaluated, but...

article

An impression management perspective on job design: The case of corporate directors

James D. Westphal

Journal of Organizational Behavior > 31 > 2‐3 > 319 - 327

In this essay I introduce a sociopolitical perspective on job design. In particular, I suggest how job design may be the subject of impression management, and illustrate this idea in the context of a specific corporate role that has received little attention in the job design literature, namely the role of corporate director. Copyright © 2010 John Wiley & Sons, Ltd.

article

Stability of solid electrolyte based thick-film CO2 sensors

C. Belda, M. Fritsch, C. Feller, D. Westphal, more

Microelectronics Reliability > 2009 > 49 > 6 > 614-620

Long-term stability is one of the major issues in the ongoing development of solid electrolyte based, screen-printed potentiometric CO ₂ sensors. Though improvements of the sensor have been reported by several research groups, mostly due to changes in material combinations, little is referred to the influence of basic technological aspects in relation to the observable degradation effects...

article

Use of flow cytometry in an apoptosis assay to determine pH and temperature stability of shiga-like toxin 1

Uma S. Babu, Dennis M. Gaines, Yang Wu, Carmen D. Westphal, more

Journal of Microbiological Methods > 2008 > 75 > 2 > 167-171

Shiga toxins and Shiga-like toxins (Stx) are a relatively large group of cytotoxins produced by certain serotypes of Shigella and E. coli (STEC). These toxins are responsible for diarrhea, hemorrhagic colitis and may induce hemolytic uremic syndrome (HUS) with serious consequences in young children. The toxins are proteins made up of 5 small B subunits responsible for binding to an outer membrane...

article

Guidance for Exposure and Risk Evaluation for Bystanders and Residents exposed to Plant Protection Products during and after Application

Sabine Martin, D. Westphal, M. Erdtmann-Vourliotis, F. Dechet, more

Journal of Consumer Protection and Food Safety > 2008 > 3 > 3 > 272-281

Plant protection products are applied in agriculture and horticulture in areas that may be accessible to the public. This means that individuals might be exposed who are not actively involved in the application of these products. The individual may be temporarily located in the vicinity of the application (the so-called ‘bystander’) or working or living in the vicinity of the application (the so-called...

article

Selectivity of HC-sensitive electrode materials for mixed potential gas sensors

J. Zosel, K. Ahlborn, R. Müller, D. Westphal, more

Solid State Ionics > 2004 > 169 > 1-4 > 115-119

In potentiometric zirconia-based gas sensors, electrodes with medium catalytic activity show a high sensitivity for hydrocarbons (HCs) when the measurements take place in non-equilibrated oxygen containing gas mixtures at temperatures =<800 ^o C. This behaviour, explained by mixed potential theory, depends strongly on preparation and particularly on measuring conditions. To learn more about...

article

Au-oxide composites as HC-sensitive electrode material for mixed potential gas sensors

J. Zosel, D. Westphal, S. Jakobs, R. Müller, more

Solid State Ionics > 2002 > 152-153 > Complete > 525-529

In potentiometric zirconia-based gas sensors, gold electrodes show a high sensitivity for hydrocarbons (HC) when the measurements take place in nonequilibrated oxygen containing gas mixtures at temperatures <700 ^o C. That behaviour explained by mixed potential theory is not stable and depends strongly on preparation and particularly on measuring conditions. To clarify the correlation between...

article

Ionic and electronic conduction in stoichiometric and sub-stoichiometric perovskites

D. Westphal, G.C. Mather, F.M.B. Marques, S. Jakobs, more

Solid State Ionics > 2000 > 136-137 > 19-24

A-site stoichiometric and sub-stoichiometric (La,Sr) ₁ _- _y (Ga,Cr)O ₃ _- _δ perovskites, with y=0 or 0.05 and variable Cr content, were prepared by the ceramic route. Structural characterisation was carried out by X-ray diffraction (XRD). Electrical conductivity of samples was determined by impedance spectroscopy and dc measurements, as a function of temperature and oxygen...

article

Measurement of three-jet distributions in photoproduction at HERA

ZEUS Collaboration, J. Breitweg, S. Chekanov, M. Derrick, more

Physics Letters B > 1998 > 443 > 1-4 > 394-408

The cross section for the photoproduction of events containing three jets with a three-jet invariant mass of M ₃ _J >50 GeV has been measured with the ZEUS detector at HERA. The three-jet angular distributions are inconsistent with a uniform population of the available phase space but are well described by parton shower models and O(αα _s ² ) pQCD calculations. Comparisons...

article

Measurement of elastic Υ photoproduction at HERA

ZEUS Collaboration, J. Breitweg, M. Derrick, D. Krakauer, more

Physics Letters B > 1998 > 437 > 3-4 > 432-444

The photoproduction reaction γp->μ ⁺ μ ^- p has been studied in ep interactions using the ZEUS detector at HERA. The data sample corresponds to an integrated luminosity of 43.2pb ^- ¹ . The Υ meson has been observed in photoproduction for the first time. The sum of the products of the elastic Υ(1S),Υ(2S),Υ(3S) photoproduction cross sections with their respective branching...

article

Search for selectron and squark production in e ⁺ p collisions at HERA

ZEUS Collaboration, J. Breitweg, M. Derrick, D. Krakauer, more

Physics Letters B > 1998 > 434 > 1-2 > 214-230

We have searched for the production of a selectron and a squark in e ⁺ p collisions at a center-of-mass energy of 300 GeV using the ZEUS detector at HERA. The selectron and squark are sought in the direct decay into the lightest neutralino in the framework of supersymmetric extensions to the Standard Model which conserve R-parity. No evidence for the production of supersymmetric particles...

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INFONA - science communication portal

Search results for: D. Westphal

Birds of a feather flock (even more) together: An intergroup relations perspective on how #MeToo‐related media coverage affects the evaluation of prospective corporate directors

High tumour mutational burden and EGFR/MAPK pathway activation are therapeutic targets in metastatic porocarcinoma*

Structural power, corporate strategy, and performance

Gene expression profiling in aggressive digital papillary adenocarcinoma sheds light on the architecture of a rare sweat gland carcinoma

A versatile liquid‐jet setup for the European XFEL

Under the radar: How firms manage competitive uncertainty by appointing friends of other chief executive officers to their boards

Evolutionary Computations for Design Optimization and Test Automation in VLSI Circuits

Predicting organizational identification at the CEO level

P.1.e.020 Neural correlates of inspiratory breathing restriction: an fMRI pilot study

Unintended agency: Impression management support as a trigger of institutional change in corporate governance

An impression management perspective on job design: The case of corporate directors

Stability of solid electrolyte based thick-film CO2 sensors

Use of flow cytometry in an apoptosis assay to determine pH and temperature stability of shiga-like toxin 1

Guidance for Exposure and Risk Evaluation for Bystanders and Residents exposed to Plant Protection Products during and after Application

Selectivity of HC-sensitive electrode materials for mixed potential gas sensors

Au-oxide composites as HC-sensitive electrode material for mixed potential gas sensors

Ionic and electronic conduction in stoichiometric and sub-stoichiometric perovskites

Measurement of three-jet distributions in photoproduction at HERA

Measurement of elastic Υ photoproduction at HERA

Search for selectron and squark production in e ⁺ p collisions at HERA

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