Chebyshev coefficients for L1-preduals and for spaces with the extension property

We apply the Chebyshev coefficients λf and λb, recently introduced by the authors, to obtain some results related to certain geometric properties of Banach spaces. We prove that a real normed space E is an L1 predual if and only if λf (E) = 1/2, and that if a (real or complex) normed space E is a P1 space, then λb(E) equals λb(K), where K is the ground field of E

The Effects Of Social Media Influencer Attributes On Collaborating Brand Credibility And Advocacy

This thesis investigates different characteristics and dimensions related to social media influencers that might affect some brand outcomes after being endorsed by /collaborating with the influencer in brand communications. This study specifically examines the impact of three dimensions—social media influencer credibility, attractiveness, and endorsement content quality—on the collaborating brand’s credibility. It also examines the influence of brand credibility on brand advocacy. The study also explores the mediating role of brand credibility and the moderating role of digital experience. To achieve these aims, the researcher employed the premises of two theories: the stimulus–organism–response theory and the social learning theory. The data were collected using an online questionnaire from 281 respondents. The findings reveal that social media influencer credibility significantly influences the credibility of the collaborating brand which in turn exert significant impact on brand advocacy. A mediating effect of collaborating brand credibility is identified between social media influencer credibility and brand advocacy. The findings have essential managerial implications that assist managers in choosing the most effective social media influencer for their brand

PENGEMBANGAN KETERAMPILAN BERFIKIR DAN KOMUNIKASI ANAK PANTI ASUHAN MELALUI METODE MUHADHOROH

Anak merupakan salah satu anugrah dari Tuhan, oleh karena itu anak wajib di didik oleh orang tua-nya, merawat dan membina serta membimbing dengan baik dan benar,sebagai wujud rasa tanggung jawab. Namun tidak sedikit anak yang kurang beruntung karena tumbuh dan besar tanpa didampingi orangtuanya, untuk menyambung hidup mereka hidup bersama dalam Panti Asuhan. Meski dengan segala keterbatasan yang ada, panti asuhan berusaha memberikan pola asuh terbaik bagi anak asuhnya termasuk dalam mengembangkan keterampilan berfikir dan komunikasi anak. Metode muhadhoroh dipilih panti asuhan insan kamil dalam melatih keterampilan itu dalam kegiatan penyampaian gagasan melalui metode muhadhoroh. Setiap anak asuh akan melalui proses berfikir mendalam untuk menyusun materi serta menentukan diksi yang tepat untuk disampaikan agar tidak terjadi diskomunikasi. Pendekatan penelitian yang dipilih adalah kualitatif dengan metodenya studi kasus sehingga data yang dihasilkan bersifat analisis-deskriptif. Adapun locus penelitian yang dilakukan bertempat di Panti Asuhan Insan Kamil Mandiri beralamat di JL. Chihanjuang No 81B Cibabat, Kecamatan Cimahi Utara, Kota Cimahi Provinsi Jawa bara

R-Process Nucleosynthesis in MHD Jet Explosions of Core-Collapse Supernovae

We investigate $r$-process nucleosynthesis during the magnetohydrodynamical (MHD) explosion of supernova in a massive star of 13 $M_{\odot}$. Contrary to the case of the spherical explosion, jet-like explosion due to the combined effects of the rotation and magnetic field lowers the electron fraction significantly inside the layers above the iron core. We find that the ejected material of low electron fraction responsible for the $r$-process comes out from the silicon rich layer of the presupernova model. This leads to the production up to the third peak in the solar $r$-process elements. We examine whether the fission affects the $r$-process paths by using the full nuclear reaction network with both the spontaneous and $\beta$-delayed fission included. Moreover, we pay particular attention how the mass formula affects the $r$-process peaks with use of two mass formulae. It is found that both formulae can reproduce the global abundance pattern up to the third peak though detailed distributions are rather different. We point out that there are variations in the $r$-process nucleosynthesis if the MHD effects play an important role in the supernova explosion.Comment: 19 pages with 7 figures, submitted to Ap

Electronic Structures of N-doped Graphene with Native Point Defects

Nitrogen doping in graphene has important implications in graphene-based devices and catalysts. We have performed the density functional theory calculations to study the electronic structures of N-doped graphene with vacancies and Stone-Wales defect. Our results show that monovacancies in graphene act as hole dopants and that two substitutional N dopants are needed to compensate for the hole introduced by a monovacancy. On the other hand, divacancy does not produce any free carriers. Interestingly, a single N dopant at divacancy acts as an acceptor rather than a donor. The interference between native point defect and N dopant strongly modifies the role of N doping regarding the free carrier production in the bulk pi bands. For some of the defects and N dopant-defect complexes, localized defect pi states are partially occupied. Discussion on the possibility of spin polarization in such cases is given. We also present qualitative arguments on the electronic structures based on the local bond picture. We have analyzed the 1s-related x-ray photoemission and adsorption spectroscopy spectra of N dopants at vacancies and Stone-Wales defect in connection with the experimental ones. We also discuss characteristic scanning tunneling microscope (STM) images originating from the electronic and structural modifications by the N dopant-defect complexes. STM imaging for small negative bias voltage will provide important information about possible active sites for oxygen reduction reaction.Comment: 40 pages, 2 tables, 16 figures. The analysis of Clar sextets is added. This version is published on PHYSICAL REVIEW B 87, 165401(2013

Overview of Child Development Accounts in Developing Countries

Child Development Accounts (CDAs) as a matter of policy have existed for some time, though predominantly in developed countries. While there are at least a few government social programs with CDA components in the developing world, such policies have yet to gain significant traction. This paper finds that despite this lack of policy movement, CDAs do exist in developing countries in a variety of forms and delivered by a diverse group of institutions. Government-linked institutions (such as savings and post banks); non-governmental institutions (such as credit unions and NGOs); and commercial financial institutions are all innovating in CDA design and delivery. This paper offers a review of how CDAs exist in developing countries, including the types of institutions offering CDAs, and design features and delivery mechanisms common among such accounts. The paper concludes with implications of this analysis for policymakers and researchers

Hooge's Constant of Carbon Nanotube Field Effect Transistors

The 1/f noise in individual semiconducting carbon nanotubes (s-CNT) in a field effect transistor configuration has been measured in ultra-high vacuum and following exposure to air. The amplitude of the normalized current spectral noise density is independent of source-drain current, indicating the noise is due to mobility rather than number fluctuations. Hooge's constant for s-CNT is found to be 9.3 plus minus 0.4x10^-3. The magnitude of the 1/f noise is substantially degreased by exposing the devices to air