220 research outputs found

    Minat Beli Berdasarkan Creative Promotion dan Inovasi Produk

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    Tujuan penelitian ini adalah untuk mengetahui pengaruh creative promotion dan inovasi produk terhadap minat beli pada Aneka Bolu Alam Jaya Kota Sukabumi. Metode yang digunakan dalam penelitian ini adalah metode sistem random sampling, dimana penulis menyebarkan kuisioner terhadap 86 konsumen. Teknik analisis yang digunakan penulis adalah menggunakan teknik analisis regresi linear berganda, koefesien korelasi ganda dan koefesien determinasi. Hasil penelitian menggunakan uji koefesien determinasi menunjukan nilai Adjuster R2 adalah sebesar 0,518 yang berarti analisis creative promotion dan inovasi produk terhadap minat beli adalah 52,9% dan 47,1% dipengaruhi oleh faktor lain yang tidak diteliti. Selain itu, pengujian koefesien korelasi ganda menunjukkan nilai R sebesar 72,8 yang berarti terjadi hubungan yang kuat antara creative promotion dan inovasi produk terhadap minat beli. Berdasarkan hasil uji F yang telah dilakukan, ditemukan nilai sig. 0,000 < 0,05. Simpulan, creative promotion dan inovasi produk berpengaruh secara positif dan signifikan secara bersama-sama terhadap minat beli konsumen. Kata Kunci : Creative Promotion, Inovasi Produk, Minat Bel

    Reconstructing initial data using observers: error analysis of the semi-discrete and fully discrete approximations

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    A new iterative algorithm for solving initial data inverse problems from partial observations has been recently proposed in Ramdani et al. (Automatica 46(10), 1616-1625, 2010 ). Based on the concept of observers (also called Luenberger observers), this algorithm covers a large class of abstract evolution PDE's. In this paper, we are concerned with the convergence analysis of this algorithm. More precisely, we provide a complete numerical analysis for semi-discrete (in space) and fully discrete approximations derived using finite elements in space and an implicit Euler method in time. The analysis is carried out for abstract Schrödinger and wave conservative systems with bounded observation (locally distributed)

    Chemical Composition and Antioxidant Activity of seeds oils and fruit juice of Opuntia Ficus Indica and Opuntia Dillenii from Morocco

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    peer reviewedThis study provides basic information on the mineral composition of the seeds and antioxidant activity in seeds oils and fruit juices of cactus belonging to two species Opuntia ficus indica and Opuntia dillenii, from Morocco (Oujda), in order to evaluate the nutritional value of the Opuntia extracts. Minerals determined from dry seeds of Opuntia ficus indica and Opuntia dillenii were: calcium 480.93 and 408.28; phosphorus 1417.59 and 970.15; potassium 304.51 and 201.96; magnesium: 316.59 and 240.30; sodium: 48.33 and 18.18; zinc: 70.77 and 78.26 mg/100g respectively. The main fatty acids of Opuntia ficus indica and Opuntia dillenii seed oil were respectively: linoleic acid: 58.79 and 79.83%, Palmitic acid: 11.18 and 13.52%. The antioxidant activity of Opuntia ficus indica and Opuntia dillenii seed oils and fruit juices were assessed by means of 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging assay and ascorbic acid test. The results showed that the antioxidant activities of Opuntia ficus indica and Opuntia dillenii seed oil (IC50 = 19.79 ± 0.023 and 27.21 ± 0.075 μL/mL) are higher than that of the reference ascorbic acid (IC50 = 16.56 ± 0.019 μg/mL). However, the Opuntia dillenii juice presents antioxidant activity more important than this of Opuntia seed oil and ascorbic acid. It possessed strong antioxidant activity (IC50 = 8.18 μL/mL). The antioxidant activity of the seed oil and juice were also found to be concentration-dependent

    Change, stress and sustainability: aquatic ecosystem resilience in North Africa

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    Summary report of a workshop held at the Institute Scientifique, University Mohammed V, Rabat, Morocco, 2-5th December 1998. Cassarina report no. 4

    Discrete-State Abstractions of Nonlinear Systems Using Multi-resolution Quantizer

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    Abstract. This paper proposes a design method for discrete abstrac-tions of nonlinear systems using multi-resolution quantizer, which is ca-pable of handling state dependent approximation precision requirements. To this aim, we extend the notion of quantizer embedding, which has been proposed by the authors ’ previous works as a transformation from continuous-state systems to discrete-state systems, to a multi-resolution setting. Then, we propose a computational method that analyzes how a locally generated quantization error is propagated through the state space. Based on this method, we present an algorithm that generates a multi-resolution quantizer with a specified error precision by finite refine-ments. Discrete abstractions produced by the proposed method exhibit non-uniform distribution of discrete states and inputs.

    Exact Controllability of the Time Discrete Wave Equation: A Multiplier Approach

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    In this paper we summarize our recent results on the exact boundary controllability of a trapezoidal time discrete wave equation in a bounded domain. It is shown that the projection of the solution in an appropriate space in which the high frequencies have been filtered is exactly controllable with uniformly bounded controls (with respect to the time-step). By classical duality arguments, the problem is reduced to a boundary observability inequality for a time-discrete wave equation. Using multiplier techniques the uniform observability property is proved in a class of filtered initial data. The optimality of the filtering parameter is also analyzed

    cAMP-Signalling Regulates Gametocyte-Infected Erythrocyte Deformability Required for Malaria Parasite Transmission.

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    Blocking Plasmodium falciparum transmission to mosquitoes has been designated a strategic objective in the global agenda of malaria elimination. Transmission is ensured by gametocyte-infected erythrocytes (GIE) that sequester in the bone marrow and at maturation are released into peripheral blood from where they are taken up during a mosquito blood meal. Release into the blood circulation is accompanied by an increase in GIE deformability that allows them to pass through the spleen. Here, we used a microsphere matrix to mimic splenic filtration and investigated the role of cAMP-signalling in regulating GIE deformability. We demonstrated that mature GIE deformability is dependent on reduced cAMP-signalling and on increased phosphodiesterase expression in stage V gametocytes, and that parasite cAMP-dependent kinase activity contributes to the stiffness of immature gametocytes. Importantly, pharmacological agents that raise cAMP levels in transmissible stage V gametocytes render them less deformable and hence less likely to circulate through the spleen. Therefore, phosphodiesterase inhibitors that raise cAMP levels in P. falciparum infected erythrocytes, such as sildenafil, represent new candidate drugs to block transmission of malaria parasites
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