1,806 research outputs found

    ECONOMIC EVALUATION OF WET CORN GLUTEN FEED IN BEEF FEEDLOT FINISHING

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    An economic evaluation of wet corn gluten feed used in beef feedlot finishing was done. Data were from feeding trials at North Dakota State University. Four rations were analyzed at 0 percent, 28 percent, 56 percent, and 85 percent wet corn gluten based on dry matter intake. Data were entered into a computer model that integrated the feeding trial data with economic input and output prices. A typical feedlot example was used. Results indicated that the 56 percent ration was the most biologically efficient. A matrix of results can be shown for various corn prices, relative to wet corn gluten feed prices and quantities fed. Based on this study, wet corn gluten feed is priced competitively with other feed stuffs.wet corn gluten feed, feeding trials, feedlot, finishing, beef, economic analysis, North Dakota, Farm Management,

    ULF waves in the solar wind as direct drivers of magnetospheric pulsations

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    [1] Global magnetospheric ULF pulsations with frequencies in the Pc 5 range (f = 1.7–6.7 mHz) and below have been observed for decades in space and on the Earth. Recent work has shown that in some cases these pulsations appear at discrete frequencies. Global cavity and waveguide modes have been offered as possible sources of such waves. In these models the magnetosphere is presumed to resonate globally at frequencies determined solely by its internal properties such as size, shape, field topology, mass density distribution, etc. We show in this work that upstream solar wind number density and dynamic pressure variations precede and drive compressional magnetic field variations at geosynchronous orbit. Furthermore, spectral analysis shows that wave power spectra in both the solar wind and magnetosphere contain peaks at the same discrete frequencies. Therefore, in contrast to the cavity mode hypothesis, we suggest that discrete ULF pulsations observed within the magnetosphere are at least sometimes directly driven by density oscillations present in the ambient solar wind. Finally, we comment on possible sources for such pulsations observed in the solar wind

    The Iowa Game Book of George E. Poyneer

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    Implementasi Peraturan Daerah Kota Kupang Nomor 15 Tahun 2011 Tentang Retribusi Pelayanan Parkir di Tepi Jalan Umum

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    Sehubungan dengan adanya perbedaan potensi parkir dengan realisasi penerimaan saat operasional dilapangan Penelitian ini dilaksanakan untuk menjawab pertanyaan; Bagaimanakah Kontribusi Retribusi Pelayanan Parkir di Tepi Jalan Umum dalam mendukung peningkatan Pendapatan Asli Daerah dalam 5 (lima) tahun terakhir, dan Faktor – Faktor apakah yang mempengaruhi rendahnya kontribusi Retribusi Pelayanan Parkir di Tepi Jalan Umum terhadap penerimaan Pendapatan Asli Daerah. Temuan penelitian menperlihatkan bahwa, data perkembangan kontribusi retribusi parkir di tepi jalan umum terhadap total penerimaan PAD, periode tahun 2009 sebesar 1,62 % dan menurun terus menjadi 1,52% tahun 2013. Penerimaan retribusi daerah, pada tahun 2009 sebesar 4,17 % dan menurun menjadi 3,08 % pada tahun 2013. Selanjutnya penerimaan retribusi jasa umum sebesar 1,66% tahun 2009 dan menurun hingga tahun 2012 dan tahun 2013 meningkat menjadi 1,70 %. Secara umum dapat disimpulkan bahwa, kontribusi retribusi parkir di tepi jalan umum belum menunjukkan peranan yang signifikan terhadap pembentukkan PAD Kota Kupang. Faktor – faktor yang menyebabkan kecilnya angka penerimaan retribusi parkir di tepi jalan umum adalah; Faktor sistem managemen penanganan parkir dan faktor sistem pemungutan retribusi parkir yang belum berjalan secara baik. Berdasarkan pendekatan ROCCIPI ditemukan perilaku bermasalah terjadi pada semua pemegang peran

    A statistical study of the global structure of the ring current

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    [1] In this paper we derive the average configuration of the ring current as a function of the state of the magnetosphere as indicated by the Dst index. We sort magnetic field data from the Combined Release and Radiation Effects Satellite (CRRES) by spatial location and by the Dst index in order to produce magnetic field maps. From these maps we calculate local current systems by taking the curl of the magnetic field. We find both the westward (outer) and the eastward (inner) components of the ring current. We find that the ring current intensity varies linearly with Dst as expected and that the ring current is asymmetric for all Dst values. The azimuthal peak of the ring current is located in the afternoon sector for quiet conditions and near midnight for disturbed conditions. The ring current also moves closer to the Earth during disturbed conditions. We attempt to recreate the Dst index by integrating the magnetic perturbations caused by the ring current. We find that we need to multiply our computed disturbance by a factor of 1.88 ± 0.27 and add an offset of 3.84 ± 4.33 nT in order to get optimal agreement with Dst. When taking into account a tail current contribution of roughly 25%, this agrees well with our expectation of a factor of 1.3 to 1.5 based on a partially conducting Earth. The offset that we have to add does not agree well with an expected offset of approximately 20 nT based on solar wind pressure

    A quantitative assessment of empirical magnetic field models at geosynchronous orbit during magnetic storms

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    [1] We evaluate the performance of recent empirical magnetic field models (Tsyganenko, 1996, 2002a, 2002b; Tsyganenko and Sitnov, 2005, hereafter referred to as T96, T02 and TS05, respectively) during magnetic storm times including both pre- and post-storm intervals. The model outputs are compared with GOES observations of the magnetic field at geosynchronous orbit. In the case of a major magnetic storm, the T96 and T02 models predict anomalously strong negative Bz at geostationary orbit on the nightside due to input values exceeding the model limits, whereas a comprehensive magnetic field data survey using GOES does not support that prediction. On the basis of additional comparisons using 52 storm events, we discuss the strengths and limitations of each model. Furthermore, we quantify the performance of individual models at predicting geostationary magnetic fields as a function of local time, Dst, and storm phase. Compared to the earlier models (T96 and T02), the most recent storm-time model (TS05) has the best overall performance across the entire range of local times, storm levels, and storm phases at geostationary orbit. The field residuals between TS05 and GOES are small (≤3 nT) compared to the intrinsic short time-scale magnetic variability of the geostationary environment even during non-storm conditions (∼24 nT). Finally, we demonstrate how field model errors may affect radiation belt studies when estimating electron phase space density

    Initial POLAR MFE observation of substorm signatures in the polar magnetosphere

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    This paper studies substorm influences in the polar magnetosphere using data from the POLAR magnetic field experiment (MFE). The POLAR spacecraft remains in the high altitude polar magnetosphere for extended periods around apogee. There it can stay at nearly constant altitude through all phases of a substorm, which was not possible on previous missions. We report such an event on March 28, 1996. Ground magnetometers monitored substorm activity, while the POLAR spacecraft, directly over the pole at (−0.8, −0.6, 8.5) RE in GSM coordinates, observed a corresponding perturbation in the total magnetic field strength. The total magnetic field first increased, then recovered toward quiet levels, consistent with erosion of magnetic flux from the dayside magnetosphere, followed by transport of that flux to the magnetotail, and eventual onset of tail reconnection and the return of that magnetic flux to the dayside magnetosphere

    Selecting The Appropriate Artificial Neural Network To Minimize Audit Costs When Assessing The Financial Viability Of Audit Clients

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    As part of an audit engagement, auditors must assess the financial viability of the audit client (SAS Nos. 58, 59, 96).  If the auditor thinks that the client is financially healthy, no action is required. However, if the auditor believes that the audit client will fail within a year from the financial statement date, then the auditor must include explanatory language stating that belief as part of the auditor’s report
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