2,762 research outputs found

    The abundance and diversity of larval and juvenile fish in a Tropical estuary

    Get PDF
    The larval and juvenile fish of the Cayenne river estuary (French Guiana, South America) were sampled at two stations from June 1989 until October 1990. A total of 52989 individuals from 59 species, some still incompletely identified, were collected. Three families, #Engraulidae, #Gobiidae and #Scianidae$, accounted for over 97% of the total number of juveniles. The analysis of data over this period showed low diversity, and a difference in diversity between the two sampling locations (H' = 1.24 and 1.68). The results conform to some theoretical models of abundance that suggest a relative equilibrium of juvenile assemblages. In contrast, the seasonal variations in diversity and abundance and the results of a correspondence analysis showed significant differences in species distribution and in their relative abundance at the two sampling locations at certain periods, mainly in the rainy season. Our study indicates that, in spite of an apparent stability, the year to year variation in salinity and freshwater inputs could affect juvenile recruitment of some species and induces modifications in the composition of larval and juvenile estuarine fish assemblages. (Résumé d'auteur

    Five minutes with Tito Boeri: “We don’t just need a welfare state in Europe, we also need a welfare union”

    Get PDF
    Are Europe’s welfare states fit to meet the demands brought on by the financial crisis? In an interview with EUROPP’s Managing Editor Stuart Brown, Tito Boeri discusses the need for a ‘stress test’ of the European welfare state, why citizens in southern European countries have been much more susceptible to poverty during the crisis, and the role that EU cooperation should play in providing a more effective safety net for European citizens

    Quantitative sampling of freshwater shrimps : comparison of two electrofishing procedures in a Caribbean stream

    Get PDF
    Two electrofishing procedures (point abundance sampling and removal sampling) for estimating community structure and the abundance of freshwater shrimps (#Decapoda : #Natantia) were compared at five sites in the Grand-Carbet River, Guadeloupe, French West Indies, on the basis of species richness, species frequency and the length of caught individuals. Sampling was carried out using battery-powered portable electric fishing gear. Both point abundance sampling and removal procedures highlighted a steep longitudinal gradient related to the shrimp fauna and non consistent discrepancy was observed between the two procedures in the different sites. Thus, the choice of one of these two procedures will depend only on the study objective. The benefits and disadvantages of these two electrofishing procedures are concisely discussed. (Résumé d'auteur

    Radiogenomics in clear cell renal cell carcinoma: correlations between advanced CT imaging (texture analysis) and microRNAs expression

    Get PDF
    Purpose: A relevant challenge for the improvement of clear cell renal cell carcinoma management could derive from the identification of novel molecular biomarkers that could greatly improve the diagnosis, prognosis, and treatment choice of these neoplasms. In this study, we investigate whether quantitative parameters obtained from computed tomography texture analysis may correlate with the expression of selected oncogenic microRNAs. Methods: In a retrospective single-center study, multiphasic computed tomography examination (with arterial, portal, and urographic phases) was performed on 20 patients with clear cell renal cell carcinoma and computed tomography texture analysis parameters such as entropy, kurtosis, skewness, mean, and standard deviation of pixel distribution were measured using multiple filter settings. These quantitative data were correlated with the expression of selected microRNAs (miR-21-5p, miR-210-3p, miR-185-5p, miR-221-3p, miR-145-5p). Both the evaluations (microRNAs and computed tomography texture analysis) were performed on matched tumor and normal corticomedullar tissues of the same patients cohort. Results: In this pilot study, we evidenced that computed tomography texture analysis has robust parameters (eg, entropy, mean, standard deviation) to distinguish normal from pathological tissues. Moreover, a higher coefficient of determination between entropy and miR-21-5p expression was evidenced in tumor versus normal tissue. Interestingly, entropy and miR-21-5p show promising correlation in clear cell renal cell carcinoma opening to a radiogenomic strategy to improve clear cell renal cell carcinoma management. Conclusion: In this pilot study, a promising correlation between microRNAs and computed tomography texture analysis has been found in clear cell renal cell carcinoma. A clear cell renal cell carcinoma can benefit from noninvasive evaluation of texture parameters in adjunction to biopsy results. In particular, a promising correlation between entropy and miR-21-5p was found

    Hotel Bisnis Di Kota Malang Dengan Pendekatan Tekno Ekonomi Bangunan

    Full text link
    Dengan semakin meningkatnya pendatang baik dibidang pariwisata, pendidikan dan ekonomi, perkembangan Kota Malang kian hari kian pesat. Hal ini dapat dibuktikan dengan terus meningkatnya jumlah hotel dan okupansi kamar pada data survey Badan Pusat Statistik Kota Malang tahun 2005-2014. Penambahan pembangunan hotel merupakan solusi dari terus meningkatnya jumlah hotel dan akupansi kamar tersebut. Sesuai dengan capaian data yang diperoleh, hotel bisnis bintang 4 dengan jumlah kamar 78 buah akan dirancang dengan pendekatan tekno ekonomi bangunan. Tapak bangunan seluas 12.840 m² berlokasi di jalan Ahmad Yani yang merupakan jalan arteri sekunder yang menghubungkan Kota Surabaya dan Kota Malang. Pemilihan lokasi strategis karena merupakan kawasan perdagangan dan jasa. Pendekatan tekno ekonomi bangunan yang dilakukan disertakan dalam setiap aspek perancangan untuk mengoptimalkan desain sehingga dapat meningkatkan nilai jual dan peluang investasi. Dengan memasukkan program ruang yang dibutuhkan, perencanaan hotel ini telah diperhitungkan dengan indikasi studi kelayakan bisnis maka diperoleh Balik modal investasinya adalah selama 1,3 tahun dengan Net Present Value bernilai Rp376.498.497.203,- (NPV > 0). Selain itu nilai Profitability Index yang diperoleh sebesar 4,04 (PI > 1). Berdasarkan pertimbangan kebutuhan investasi dan perhitungan rencana bisnis (Business Plan) pada perancangan pembangunan hotel bisnis bintang 4, daya ketertarikan bagi para investor untuk menanamkan modalnya akan semakin besar

    Rumah Susun di Kawasan Kaki Suramadu Sisi Surabaya

    Full text link
    Kebutuhan akan hunian yang layak adalah salah satu kebutuhan dasar masyarakatyang tidak dapat ditinggalkan di samping kebutuhan akan sandang dan pangan.Meskipun demikian, masalah permukiman merupakan masalah umum yang seringterjadi di kota-kota besar, terutama di negara berkembang layaknya Indonesia.Permasalahan akan terbatasnya hunian layak bagi masyarakat perkotaan, terutamakalangan menengah ke bawah tersebut juga terjadi di kota Surabaya. Surabayasebagai ibukota Provinsi Jawa Timur dan kota metropolitan kedua setelah Jakartamemiliki pertumbuhan penduduk yang tergolong tinggi di tiap tahunnya. Denganadanya peningkatan jumlah penduduk setiap tahunnya di kota Surabaya, makapermasalahan ketersediaan hunian yang layak menjadi suatu hal penting yang harussegera ditangani oleh pihak terkait. Pada dasarnya, penyediaan kebutuhan huniandengan menghadirkan komplek-komplek Perumahan telah diupayakan oleh pihakpemerintah dan swasta. Pemerintah Pusat berkoordinasi dengan pemerintahregional Surabaya sendiri saat ini sedang menggalakkan pembangunaninfrastruktur, termasuk hunian masyarakat, di beberapa wilayah, salah satunyaialah di wilayah Jembatan Surabaya-Madura. Secara struktural, melalui PeraturanPresiden Nomor 27 Tahun 2008 tentang Pembentukan Badan PengembanganWilayah Surabaya-Madura (BPWS), peraturan tersebut kemudian disempurnakandengan Peraturan Presiden Nomor 23 Tahun 2009 tentang PenyempurnaanPeraturan Presiden Nomor 27 Tahun 2008 tentang Pembentukan BadanPengembangan Wilayah Surabaya-Madura (BPWS)

    Neutrino magnetohydrodynamics

    Full text link
    A new neutrino magnetohydrodynamics (NMHD) model is formulated, where the effects of the charged weak current on the electron-ion magnetohydrodynamic fluid are taken into account. The model incorporates in a systematic way the role of the Fermi neutrino weak force in magnetized plasmas. A fast neutrino-driven short wavelengths instability associated with the magnetosonic wave is derived. Such an instability should play a central role in strongly magnetized plasma as occurs in supernovae, where dense neutrino beams also exist. In addition, in the case of nonlinear or high frequency waves, the neutrino coupling is shown to be responsible for breaking the frozen-in magnetic field lines condition even in infinite conductivity plasmas. Simplified and ideal NMHD assumptions were adopted and analyzed in detail

    Analisis Strategi Aliansi untuk Meraih Keunggulan Kompetitif dalam Jasa Pengiriman Paket Berskala Internasional di Indonesia (Studi pada PT. Pos Indonesia)

    Full text link
    This research is descriptive research using qualitative approach. The focus of this research is an alliance strategy model that companies apply in International scale package delivery services to achieve competitive advantage from their competitors, and consideration of companies in choosing an alliance strategy. This research was conducted at PT. Pos Indonesia Bandung, West Java. Data collection technique is done by interview, observation and documentation. The results showed that alliance strategy model conducted by PT. Pos Indonesia with DHL is just in outgoing activity. The company's considerations for an alliance strategy include: both companies are in the same association, both companies have similar understandings and views of the contract, and the DHL has more direct access to the targeted countres and has better facilities than PT.Pos Indonesia. The alliance strategy was successful enough because it has been extended 6 times since 2005 with the improvement of the quality of EMS products, but there has been a sharp decline in production since 2015 and needs to be reviewed. Kеywords: Alliance Strategy, Competitive Advantages, Service Delivery АBSTRАK Penelitian ini merupakan penelitian deskriptif dengan menggunakan pendekatan kualitatif. Fokus penelitian ini adalah model strategi aliansi yang diterapkan Perusahaan dalam layanan pengiriman paket berskala Internasional untuk mencapai keunggulan kompetitif dari para pesaingnya, dan pertimbangan Perusahaan dalam memilih strategi aliansi. Penelitian ini dilakukan di kantor pusat PT. Pos Indonesia Bandung, Jawa Barat. Teknik pengumpulan data dilakukan dengan cara wawancara, observasi dan dokumentasi. Hasil penelitian menunjukkan bahwa model strategi aliansi yang dilakukan PT. Pos Indonesia dengan DHL mencakup dalam kegiatan outgoing atau pengiriman ke luar. Pertimbangan Perusahaan melakukan strategi aliansi antara lain: kedua Perusahaan berada dalam satu asosiasi yang sama, kedua Perusahaan memiliki kesamaan paham dan pandangan mengenai kontrak, dan pihak DHL memiliki akses langsung yang lebih banyak ke negara yang dituju dan memiliki sarana yang lebih baik dibandingkan PT.Pos Indonesia. Strategi aliansi yang dijalankan cukup sukses karena telah diperpanjang 6 kali semenjak tahun 2005 dengan adanya peningkatan kualitas dari produk EMS, namun terjadi penurunan produksi yang tajam semenjak tahun 2015 dan perlu dikaji ulang kerjasamanya. Kаtа Kunci: Strategi Aliansi, Keunggulan Kompetitif, Jasa Pengirima
    corecore