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Cari koleksi dengan cepat sesuai kebutuhan Anda.The growing cultural diversity caused by immigration is seen as important for innovation. Research has focused on two potential mechanisms: a firm effect, with diversity at the firm level improving knowledge sourcing or ideas generation, and a city effect, where diverse cities help firms innovate. This article uses a dataset of over 2000 UK small- and medium-sized enterprises to test between t…
Penelitian ini bertujuan untuk mengetahui terdapat atau tidaknya pengaruh hasil belajar PKn siswa yang diajar dengan pretest dan posttest hasil belajar PKn. Hipotesis yang diajukan dalam penelitian ini adalah: “ Pengaruh Sikap Patriotisme Terhadap Hasil Belajar PKn Siswa Kelas IV SDN 07 PAGI Cengkareng Timur Jakarta Barat” semester genap tahun pelajaran 2013/2014. Sampel diambil menggunakan…
The dispersion of interface waves is studied theoretically in a model consisting of a liquid layer of finite thickness overlying a transversely isotropic solid layer which is itself underlain by a transversely isotropic solid of dissimilar elastic properties. The method of potential functions and Hankel transformation was utilized to solve the equations of motion. Two frequency equations were …
We investigate the capability of Time Reversal Mirror (TRM) algorithm to image local acoustic sources (<3.5 km) associated with complex, sustained volcanic eruptions. Accurate source localization for volcano infrasound (low-frequency acoustic waves) is often challenging due to pronounced volcanic topography and emergent arrivals of infrasound signals. While the accuracy of the conventional app…
There has been a proposal that infrared quantum effects of massless interacting field theories in de Sitter space may provide time-dependent screening of the cosmological constant. As a concrete model of the proposal, we study the three loop corrections to the energy–momentum tensor of massless λφ4 theory in the background of classical Liouville gravity in D = 2 dimensional de Sitt…