The design of vertical R&D collaborations

Suppliers play a major role in innovation processes. We analyze ownership allocations and the choice of R&D technology in vertical R&D cooperations. Given incomplete contracts on the R&D outcome, there is a tradeoff between R&D specifically designed towards a manufacturer (increasing investment productivity) and a general technology (hold-up reduction). We find that the market solution yields the specific technology in too few cases. More intense product market competition shifts optimal ownership towards the supplier. The use of exit clauses increases the gains from the collaboration. JEL Classification: L22, L24, O31, O3

The Design of Vertical R&D Collaborations

Suppliers play a major role in the downstream firm's innovation processes. We analyse ownership allocations and the choice of R&D technology in vertical R&D cooperations. Given incomplete contracts on the R&D outcome, there is a trade-off between R&D specifically designed towards a manufacturer (increasing investment productivity) and a general technology (hold-up reduction). We find that the market solution yields the specific technology in too few cases. More intense product market competition shifts optimal ownership towards the supplier. The use of exit clauses increases the gains from the collaboration

Real Options Valuation of Highly Uncertain Investments: Are UMTS-Licenses Worth their Money?

We adopt a real options approach to analyse the value of recently auctioned UMTS- licenses, focussing on Germany as the largest European market. For that purpose we develop a real options model with an abandonment as well as a growth option. Not having an appropriate underlying security of the options, we pursue an indirect approach by assuming a stochastic process for the number of mobile phone users. As we also take account of the optimal option exercise, we have to rely on numerical analysis rather than on closed form solutions. Our real options model enables us to value the flexibility inherent in the UMTS investments. On the basis of a sensitivity analysis it turns out that two variables are crucial for a positive expected value of the investments: the initial customer base of a mobile phone company as well as the realised net cash °ows per user

Endoscopic Skull Base Surgery in the Pediatric Patient

Pathology along the anterior and posterior skull base has long posed challenges to surgeons due to the difficulty accessing these locations and complexity of the surrounding neurovascular anatomy. Initial surgical management of these disorders included open craniofacial approaches and/or craniotomy and these approaches are still utilized today for selected cases. However, advances in the later half of the 20th century in optics, endoscope design, and high definition digital images allowed the development of microscopic and, more recently, endoscopic approaches to the skull base. This technology was initially developed and used in adults, but has been adapted over time for use in the pediatric patient. In this chapter, the salient points regarding pediatric endoscopic skull base surgery will be reviewed to provide the reader a framework for understanding the indications, pertinent anatomy, preoperative evaluation, and intraoperative management of skull base pathology, highlighting challenges and circumstances unique to the pediatric population

Multidrug-resistant Escherichia coli, Klebsiella pneumoniae and Staphylococcus spp. in houseflies and blowflies from farms and their environmental settings

Background: Antimicrobial resistance is rising globally at an alarming rate. While multiple active surveillance programs have been established to monitor the antimicrobial resistance, studies on the environmental link to antimicrobial spread are lacking. Methods: A total of 493 flies were trapped from a dairy unit, a dog kennel, a poultry farm, a beef cattle unit, an urban trash facility and an urban downtown area to isolate Escherichia coli, Klebsiella pneumoniae and Staphylococcus spp. for antimicrobial susceptibility testing and molecular characterization. Results: E. coli, K. pneumoniae and coagulase-negative Staphylococcus were recovered from 43.9%, 15.5% and 66.2% of the houseflies, and 26.0%, 19.2%, 37.0% of the blowflies, respectively. In total, 35.3% of flies were found to harbor antimicrobial-resistant bacteria and 9.0% contained multidrug-resistant isolates. Three Staphylococcus aureus isolates were recovered from blowflies while three extended spectrum beta lactamase (ESBL)-carrying E. coli and one ESBL-carrying K. pneumoniae were isolated from houseflies. Whole genome sequencing identified the antimicrobial resistance genes bla(CMY-2) and bla(CTXM-1) as ESBLs. Conclusion: Taken together, our data indicate that flies can be used as indicators for environmental contamination of antimicrobial resistance. More extensive studies are warranted to explore the sentinel role of flies for antimicrobial resistance

Makroökonomische Effekte von nachwachsenden Rohstoffen

The results of a current study point out the macroeconomic effects associated with the use and production of renewable resources (NAWARO) in Germany. It focuses on the direct and indirect employment effects in the NAWARO market segments biofuels, energy/electricity, chemical commodities and materials. Supply quantities of renewable resources and agricultural area in Germany required by the industrial production in the different market segments and associated employment effects in the German agricultural sector are also analyzed. Above all, if Germany succeeds to be a lead market in certain NAWARO market segments while retaining agricultural and industrial value chains in Germany considerable employment potentials emerge.renewable resources, new technologies, employment potentials, lead markets, scenarios, Labor and Human Capital, Resource /Energy Economics and Policy,

In Vivo Identification of Eugenol-Responsive and Muscone-Responsive Mouse Odorant Receptors

Our understanding of mammalian olfactory coding has been impeded by the paucity of information about the odorant receptors (ORs) that respond to a given odorant ligand in awake, freely behaving animals. Identifying the ORs that respond in vivo to a given odorant ligand from among the ∼1100 ORs in mice is intrinsically challenging but critical for our understanding of olfactory coding at the periphery. Here, we report an in vivo assay that is based on a novel gene-targeted mouse strain, S100a5-tauGFP, in which a fluorescent reporter selectively marks olfactory sensory neurons that have been activated recently in vivo. Because each olfactory sensory neuron expresses a single OR gene, multiple ORs responding to a given odorant ligand can be identified simultaneously by capturing the population of activated olfactory sensory neurons and using expression profiling methods to screen the repertoire of mouse OR genes. We used this in vivo assay to re-identify known eugenol- and muscone-responsive mouse ORs. We identified additional ORs responsive to eugenol or muscone. Heterologous expression assays confirmed nine eugenol-responsive ORs (Olfr73, Olfr178, Olfr432, Olfr610, Olfr958, Olfr960, Olfr961, Olfr913, and Olfr1234) and four muscone-responsive ORs (Olfr74, Olfr235, Olfr816, and Olfr1440). We found that the human ortholog of Olfr235 and Olfr1440 responds to macrocyclic ketone and lactone musk odorants but not to polycyclic musk odorants or a macrocyclic diester musk odorant. This novel assay, called the Kentucky in vivo odorant ligand-receptor assay, should facilitate the in vivo identification of mouse ORs for a given odorant ligand of interest

Magnetically Directed Two-Dimensional Crystallization of OmpF Membrane Proteins in Block Copolymers

Two-dimensional (2D) alignment and crystallization of membrane proteins (MPs) is increasingly important in characterizing their three-dimensional (3D) structure, in designing pharmacological agents, and in leveraging MPs for biomimetic devices. Large, highly ordered MP 2D crystals in block copolymer (BCP) matrices are challenging to fabricate, but a facile and scalable technique for aligning and crystallizing MPs in thin-film geometries would rapidly translate into applications. This work introduces a novel method to grow larger and potentially better ordered 2D crystals by performing the crystallization process in the presence of a strong magnetic field. We demonstrate the efficacy of this approach using a \u3b2-barrel MP, outer membrane protein F (OmpF), in short-chain polybutadiene-poly(ethylene oxide) (PB-PEO) membranes. Crystals grown in a magnetic field were up to 5 times larger than conventionally grown crystals, and a signal-to-noise (SNR) analysis of diffraction peaks in Fourier transforms of specimens imaged by negative-stain electron microscopy (EM) and cryo-EM showed twice as many high-SNR diffraction peaks, indicating that the magnetic field also improves crystal order