572 research outputs found
From Burlesque to \u3ci\u3eGrand Theft Auto\u3c/i\u3e: An Historical Analysis of the Treatment of the Media-Crime Relationship in Criminology Texts
The degree to which criminological scholarship on the mediacrime relationship has been subject to the tides of moral panics is not well-understood, although there are theoretical reasons to hypothesize about the role of scientists in moral panics. Textbooks are one location in which a discipline chronicles its scholarly history and speaks to the public, making texts an important site for understanding how scholars interpret the media-crime relationship. A content analysis of over 200 criminology texts, ranging in publication dates from 1880 to 2012, was conducted. Almost half the texts covered the media-crime relationship. These texts often appeared to be responding to and concurring with public debates brought on by moral panics. Textbooks most frequently took a negative stance on the media-crime relationship, as opposed to a more neutral stance or balanced approach. Proportionally, the media-crime relationship received the most coverage in the 1950s, 1990s, and 2000s, decades that correspond to surges of public debates about comics and video games. The decision of many authors to take a negative position in texts, while others cited contrary evidence, may reflect scholarly authors’ participation, intentionally or not, in the panic process
Product Innovation With Partial Capacity Rollover
Dawid H, Kopel M, Kort PM. Product Innovation With Partial Capacity Rollover. Universität Bielefeld Working Papers in Economics and Management. Vol 02-2019. Bielefeld: Bielefeld University, Department of Business Administration and Economics; 2019.This paper analyzes how the transferability of production capacities from an established
to a new product influences the incentives of a firm to invest in R&D. A
dynamic duopoly model is considered, where initially both firms offer a homogeneous
product. The firms invest in production capacities and simultaneously in R&D which
determines their innovation rate. The firm that innovates first extends its product line
and obtains a patent for the new product that prevents the other firm from catching
up. Upon the launch of the new product, the innovator then has the option to transfer
part of the capacity for the established product to the production process of the
new product. If capacities can be rolled over to the new product, a trade-off can be
detected in that this rollover option gives the larger firm more incentive to innovate,
whereas the cannibalization effect gives the smaller firm a higher innovation incentive.
As a logical consequence we find that the larger firm is expected to innovate first when
the capacity transfer does not involve a too high capacity loss. However, if the losses
of capacity transfer are considerable, the cannibalization effect starts to dominate and
the smaller firm’s incentive to innovate is larger
Dynamic Investment Strategies and Leadership in Product Innovation
Dawid H, Keoula M, Kopel M, Kort PM. Dynamic Investment Strategies and Leadership in Product Innovation. Working Papers in Economics and Management. Vol 03-2017. Bielefeld: Bielefeld University, Department of Business Administration and Economics; 2017.We employ a dynamic market model with endogenous creation of submarkets to study the optimal product innovation strategies of incumbent firms. Firms invest in production capacity and R&D knowledge stock, where the latter determines the hazard rate of innovation. We find that under Markov Perfect Equilibrium behavior the firm with a larger market share on the established market is less likely to be the first innovator. Investment in R&D knowledge is negatively affected by the opponent's production capacity on the established market if the opponent has not innovated yet. However, this effect is reversed after the opponent has successfully introduced the new product. The firm with higher costs of adjusting capacity for the established product has a larger incentive to engage in product innovation and might even achieve higher long run profit than its more efficient competitor
Bostonia: 1998-1999, no. 1, 3-4
Founded in 1900, Bostonia magazine is Boston University's main alumni publication, which covers alumni and student life, as well as university activities, events, and programs
Recommended from our members
Under-sampling and compressed sensing of 3D spatially-resolved displacement propagators in porous media using APGSTE-RARE MRI.
A method for under-sampling and compressed sensing of 3D spatially-resolved propagators is presented and demonstrated for flow in a packed bed and a heterogeneous carbonate rock. By sampling only 12.5% of q,k-space, the experimental acquisition time was reduced by almost an order of magnitude. In particular, for both systems studied, a 3D image was acquired at 1 mm isotropic spatial resolution such that 134,400 local propagators were obtained. Data were acquired in ~1 h and ~11 h for the packed bed and rock, respectively. It is shown that spatial resolution and under-sampling using this implementation retains the quantitative nature of the propagator measurement, and differences between implementation of this measurement in two and three dimensions are identified. The potential for 3D spatially-resolved propagators to provide new insights into transport processes in porous media by characterisation of the statistical moments of the propagators is discussed
Product Innovation Incentives by an Incumbent Firm: A Dynamic Analysis
Dawid H, Keoula MY, Kopel M, Kort PM. Product Innovation Incentives by an Incumbent Firm: A Dynamic Analysis. Working Papers in Economics and Management. Vol 11-2014. Bielefeld: Bielefeld University, Department of Business Administration and Economics; 2014.We study in a dynamic framework how product innovation activities of a
firm are influenced by its production capacity investments for an established
product and vice versa. The firm initially has capacity to sell an established
product, and it also has the option to undertake an R&D project, which
upon completion allows the firm to introduce a new vertically and horizontally
differentiated product to the market, thereby extending its product range. The
breakthrough probability of detecting the new product depends on both the
value of the firm’s R&D stock and its current R&D investment. It is shown
that the initial production capacity for the established product influences the
intensity of R&D activities of the firm. In particular, there are constellations
such that for large initial production capacity for the established product the
firm never invests in R&D and the new product is never introduced. For small
initial capacity the firm keeps investing in R&D implying that eventually the
new product is always introduced. Finally, for an intermediate range of initial
capacity levels the firm initially invests in product R&D, but then reduces
these investments to zero. In this scenario the new product is introduced with
a positive probability, which is however substantially smaller than 1. From a
technical perspective this analysis gives the example of a new type of Skiba
threshold phenomenon in the framework of a multi-mode optimization model
Recommended from our members
Acquisition of spatially-resolved displacement propagators using compressed sensing APGSTE-RARE MRI.
A method is presented for accelerating the acquisition of spatially-resolved displacement propagators via under-sampling of an Alternating Pulsed Gradient Stimulated Echo - Rapid Acquisition with Relaxation Enhancement (APGSTE-RARE) data acquisition with compressed sensing image reconstruction. The method was demonstrated with respect to the acquisition of 2D spatially-resolved displacement propagators of water flowing through a packed bed of hollow cylinders. The q,k-space was under-sampled according to variable-density pseudo-random sampling patterns. The quality of compressed sensing reconstructions of spatially-resolved propagators at a range of sampling fractions was assessed using the peak signal-to-noise ratio (PSNR) as a quality metric. Propagators of good quality (PSNR 33.2 dB) were reconstructed from only 6.25% of all data points in q,k-space, resulting in a reduction in the data acquisition time from 4 h to 14 min. The spatially-resolved propagators were reconstructed using both the total variation and nuclear norm sparsifying transforms; use of total variation resulted in a slightly higher quality of the reconstructed image in most cases. To illustrate the power of this method to characterise heterogeneous flow in porous media, the method is applied to the characterisation of flow in a vuggy carbonate rock
Clinical Assessment of Potential Drug Interactions of Faldaprevir, a Hepatitis C Virus Protease Inhibitor, With Darunavir/Ritonavir, Efavirenz, and Tenofovir
Faldaprevir is a potent hepatitis C virus NS3/4A protease inhibitor. The findings from 3 phase 1 studies reported here suggest that faldaprevir can be safely coadministered with commonly used antiretroviral
Durability of functionalized carbon structures with optical fiber sensors in a highly alkaline concrete environment.
The paper presents an investigation into the durability of functionalized carbon structures (FCS) in a highly alkaline concrete environment. First, the suitability of optical fibers with different coatings—i.e., acrylate, polyimide, or carbon—for the FCS was investigated by subjecting fibers with different coatings to micro/macro bending and a 5% sodium hydroxide (NaOH) (pH 14) solution. Then, the complete FCS was also subjected to a 5% NaOH solution. Finally, the effects of spatial variation of the fiber embedded in the FCS and the bonding strength between the fiber and FCS was evaluated using different configurations —i.e., fiber integrated into FCS in a straight line and/or with offsets. All three coatings passed the micro/macro bending tests and show degradation after alkaline exposure, with the carbon coating showing least degradation. The FCS showed relative stability after exposure to 5% NaOH. The optimum bonding length between the optical fiber and the carbon filament was found to be ≥150 mm for adequate sensitivity
- …