83 research outputs found

    A scenario‐guided strategy for the future management of biological invasions

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    Future dynamics of biological invasions are highly uncertain because they depend on multiple social–ecological drivers. We used a scenario-based approach to explore potential management options for invasive species in Europe. During two workshops involving a multidisciplinary team of experts, we developed a management strategy arranged into 19 goals relating to policy, research, public awareness, and biosecurity. We conceived solutions for achieving these goals under different plausible future scenarios, and identified four interrelated recommendations around which any long-term strategy for managing invasive species can be structured: (1) a European biosecurity regime, (2) a dedicated communication strategy, (3) data standardization and management tools, and (4) a monitoring and assessment system. Finally, we assessed the feasibility of the management strategy and found substantial differences among scenarios. Collectively, our results indicate that it is time for a new strategy for managing biological invasions in Europe, one that is based on a more integrative approach across socioeconomic sectors and countries

    EMuRgency : Addressing cardiac arrest with sociotechnical innovation in a smart learning region

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    This paper introduces the EMuRgency project. The project has the goal to increase awareness and competences regarding the problem of cardiac arrest in the Euregio Meuse-Rhine (EMR) and to use socio-technical innovations to transfer it into a smart learning region. Based on the conscious competence framework solutions for stakeholders on different levels of the framework are introduced, namely a public display network, mobile learning apps and a volunteer notification system. Finally, a future research outlook is given

    Considering optogenetic stimulation for cochlear implants

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    Electrical cochlear implants are by far the most successful neuroprostheses and have been implanted in over 300,000 people worldwide. Cochlear implants enable open speech comprehension in most patients but are limited in providing music appreciation and speech understanding in noisy environments. This is generally considered to be due to low frequency resolution as a consequence of wide current spread from stimulation contacts. Accordingly, the number of independently usable stimulation channels is limited to less than a dozen. As light can be conveniently focused, optical stimulation might provide an alternative approach to cochlear implants with increased number of independent stimulation channels. Here, we focus on summarizing recent work on optogenetic stimulation as one way to develop optical cochlear implants. We conclude that proof of principle has been presented for optogenetic stimulation of the cochlea and central auditory neurons in rodents as well as for the technical realization of flexible plEDbased multichannel cochlear implants. Still, much remains to be done in order to advance the technique for auditory research and even more for eventual clinical translation. (C) 2015 Published by Elsevier B.V

    Thalamocortical and intracortical contributions to stimulus-evoked and oscillatory activity in rodent primary auditory cortex

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    AbstractIntracortical, horizontal connections seem ideally suited to contribute to cortical processing by spreading information across cortical space and coordinating activity between distant cortical sites. In sensory systems experiments have implicated horizontal connections in the generation of receptive fields and have in turn led to computational models of receptive field generation that rely on the contribution of horizontal connections. Testing the contribution of horizontal connections at the mesoscopic level has been difficult due to the lack of a suitable method to observe the activity of intracortical horizontal connections. Here, we develop such a method based on the analysis of the relative residues of the cortical laminar current source density reconstructions. In the auditory cortex of Mongolian gerbils, the method is then tested by manipulating the contribution of horizontal connections by surgical dissection. Our results indicate that intracortical horizontal connections contribute to the frequency-tuning of mesoscopic cortical patches. Futhermore, we dissociated a type of cortical gamma oscillation based on horizontal connections between mesoscopic patches from gamma oscillations locally generated within mesoscopic patches. The data further imply that global and local coordination of activity during sensory stimulation occur in a low and high gamma frequency band, respectively. Taken together the present data demonstrate that intracortical horizontal connections play an important role in generating cortical feature tuning and coordinate neuronal oscillations across cortex.</jats:p

    Effects of Cortical Cooling on Sound Processing in Auditory Cortex and Thalamus of Awake Marmosets

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    The auditory thalamus is the central nexus of bottom-up connections from the inferior colliculus and top-down connections from auditory cortical areas. While considerable efforts have been made to investigate feedforward processing of sounds in the auditory thalamus (medial geniculate body, MGB) of non-human primates, little is known about the role of corticofugal feedback in the MGB of awake non-human primates. Therefore, we developed a small, repositionable cooling probe to manipulate corticofugal feedback and studied neural responses in both auditory cortex and thalamus to sounds under conditions of normal and reduced cortical temperature. Cooling-induced increases in the width of extracellularly recorded spikes in auditory cortex were observed over the distance of several hundred micrometers away from the cooling probe. Cortical neurons displayed reduction in both spontaneous and stimulus driven firing rates with decreased cortical temperatures. In thalamus, cortical cooling led to increased spontaneous firing and either increased or decreased stimulus driven activity. Furthermore, response tuning to modulation frequencies of temporally modulated sounds and spatial tuning to sound source location could be altered (increased or decreased) by cortical cooling. Specifically, best modulation frequencies of individual MGB neurons could shift either toward higher or lower frequencies based on the vector strength or the firing rate. The tuning of MGB neurons for spatial location could both sharpen or widen. Elevation preference could shift toward higher or lower elevations and azimuth tuning could move toward ipsilateral or contralateral locations. Such bidirectional changes were observed in many parameters which suggests that the auditory thalamus acts as a filter that could be adjusted according to behaviorally driven signals from auditory cortex. Future work will have to delineate the circuit elements responsible for the observed effects

    Effects of Cortical Cooling on Sound Processing in Auditory Cortex and Thalamus of Awake Marmosets

    No full text
    The auditory thalamus is the central nexus of bottom-up connections from the inferior colliculus and top-down connections from auditory cortical areas. While considerable efforts have been made to investigate feedforward processing of sounds in the auditory thalamus (medial geniculate body, MGB) of non-human primates, little is known about the role of corticofugal feedback in the MGB of awake non-human primates. Therefore, we developed a small, repositionable cooling probe to manipulate corticofugal feedback and studied neural responses in both auditory cortex and thalamus to sounds under conditions of normal and reduced cortical temperature. Cooling-induced increases in the width of extracellularly recorded spikes in auditory cortex were observed over the distance of several hundred micrometers away from the cooling probe. Cortical neurons displayed reduction in both spontaneous and stimulus driven firing rates with decreased cortical temperatures. In thalamus, cortical cooling led to increased spontaneous firing and either increased or decreased stimulus driven activity. Furthermore, response tuning to modulation frequencies of temporally modulated sounds and spatial tuning to sound source location could be altered (increased or decreased) by cortical cooling. Specifically, best modulation frequencies of individual MGB neurons could shift either toward higher or lower frequencies based on the vector strength or the firing rate. The tuning of MGB neurons for spatial location could both sharpen or widen. Elevation preference could shift toward higher or lower elevations and azimuth tuning could move toward ipsilateral or contralateral locations. Such bidirectional changes were observed in many parameters which suggests that the auditory thalamus acts as a filter that could be adjusted according to behaviorally driven signals from auditory cortex. Future work will have to delineate the circuit elements responsible for the observed effects.</jats:p

    The Use of Air-Measured Profile Data for Application in a High Pressure Steam Turbine

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    Skripsi ini adalah salah satu kajian yang merumuskan judul ke dalam bentuk pokok masalah yaitu: (1). Proses Sertifikasi Halal Produk yang dilaksanakan oleh Majelis Ulama Indonesia. (2). Landasan Hukum Proses Sertifikasi Halal di Indonesia. Metode penelitian yang digunakan adalah penelitian lapangan (field research) jenis deskriptif kualitatif dengan menggunakan pendekatan yuridis normatif dan empiris dengan tujuan untuk mendeskripsikan secara rinci terkait pokok-pokok masalah yang terdapat dalam judul penelitian, kemudian membuat kesimpulan berdasarkan data dan fakta yang telah dianalisis sebagai hasil penelitian Berdasarkan hasil penelitian menunjukan bahwa, proses sertifikasi halal produk yang dilaksanakan oleh Majelis Ulama Indonesia meliputi: Pendaftaran, Pelaksanaan Audit Sertifikasi Halal, Rapat Auditor Halal LPPOM MUI, Rapat Komisi Fatwa MUI dan Penerbitan Sertifikat Halal. Landasan hukum proses sertifikasi halal di Indonesia yaitu: Undangundang Republik Indonesia No. 7 Tahun 1996 Tentang Pangan, Kepmenkes Republik Indonesia No. 924/Menkes/SK/VIII/1996 Tentang Perubahan Atas Kepmenkes Republik Indonesia No. 82/SK/I/1996 Tentang Pencantuman Tulisan “Halal” pada Label Makanan, Peraturan Pemerintah No. 69 Tahun 1999 Tentang Label dan Iklan Pangan dan Undang-undang Republik Indonesia No. 33 Tahun 2014 Tentang Jaminan Produk Halal
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