78 research outputs found
Penyelidikan Perilaku Mekanik Helm Industri Akibat Beban Impak Kecepatan Tinggi
No full textThis thesis reports results of experimental and numerical work on the impact response of industrial helmets subjected to severe impact loading. The impact is produced by accelerating a load transfer bar on to the helmet by making use ofan air gun apparatus. A special test rig is provided; using the test set up, the incident stress transmitted into helmets were calculated by using a two-gage method. The method is based on the propagation of the tensile stress waves reflected from the free ends afler impact by utilizing a modified Hopkinson pressure-bar technique. To obtain the impact response of helmet at any position, a numerical calculation using MSC/NASTRAN 3D were conducted. Solidwork 2001 3D software was used to model the helmet: two type of helmet model were introduced, they are (a) plain model, and (b) with longitudinal rib model. The incident stress is introduced on the top center of the crown. The intensity of the incident stress introduced at that location is 19.65 MPa, as it is found from the result of the experiment. The mean value of the incident stress obtained from the impact experiment is used as elemental pressure input in the FEAt model. It is well known that the effect of impact loading on the structure is different from that ofstatic loading. Under impact, the stress wave may be propagated and is reflected at free boundaries toward the impact location. The waves may interfere each other and form a stress concentration zone that may detoriate the structure. In case of the helmet structure reported in this thesis is worth to note that for all cases the tensile stress in x (?x) direction concentrate on the front direction and in y (?y) direction exhibit on the side of the structure. And longitudinal rib may decrease the tensile stress in x (?x) direction. The impact response ofplain helmets are different from those of helmets equipped with longitudinal rib. The effect oflongitudinal rib may decrease the ?x significantly at the front ofthe helmets and it has no significant contribution in reducing ?y .91 HalamanTesis Magiste
PENGARUH PERPUTARAN MODAL KERJA, FINANCIAL LEVERAGE DAN DEBT TO EQUITY RATIO TERHADAP RETURN ON EQUITY PADA PERUSAHAAN MANUFAKTUR YANG TERDAFTARDI BURSA EFEK INDONESIA
No full textABSTRAKAWALUDDIN SYAM, Pengaruh Perputaran Modal Kerja, Financial Leverage, dan Debt to Equity Ratio terhadap Return On Equity Pada Perusahaan Manufaktur Yang Terdaftar Di Bursa Efek Indonesia (dibimbing oleh H. Murdifin Haming dan H. R. Sudirman)Penelitian ini dilakukan dengan tujuan untuk: (1) Mengetahui secara simultan pengaruh perputaran modal kerja (WCTO), financial leverage (DFL) dan debt to equity ratio (DER) terhadap return on equity (ROE) pada perusahaan manufaktur yang terdaftar di Bursa Efek Indonesia (BEI). (2) Untuk mengetahui secara parsial pengaruh perputaran modal kerja (WCTO), financial leverage (DFL) dan debt to equity ratio (DER) terhadap return on equity (ROE) pada perusahaan manufaktur yang terdaftar di Bursa Efek Indonesia (BEI). (3) Untuk mengetahui variabel yang dominan berpengaruh terhadap return on equity (ROE) pada perusahaan manufaktur yang terdaftar di Bursa Efek Indonesia (BEI).Penelitian ini menggunakan data sekunder dengan cara melihat dan mempelajari dokumen atau catatan data yang ada pada industri makanan dan minuman yang terdaftar di Bursa Efek Indonesia (BEI), penarikan sampel secara purposive sampling (judgmental sampling) yakni pengambilan sampel yang didasarkan pada pertimbangan dan kriterial sampel yang telah ditentukan. Data dianalisis dengan menggunakan Program Statistical Package for the Sosial Science (SPSS) versi 2.2.Hasil penelitian ini menunjukkan bahwa : (1) Secara Simultan Perputaran Modal kerja, Financial Leverage dan Debt to equity ratio memiliki pengaruh yang signifikan terhadap Return On Equity dengan menunjukkan nilai Fhitung 5,507 dan nilai signifikansi korelasi sebesar 0,002. (2) Secara parsial Perputaran Modal Kerja memiliki pengaruh signifikan terhadap Return On Equity dengan nilai signifkansi 0,017, Degrre of Financial Leverage tidak memiliki pengaruh signifikan terhadap Return On Equity dengan nilai signifkansi 0,352 dan Debt to equity ratio memiliki pengaruh signifikan terhadap Return On Equity dengan nilai signifkansi 0,015. (3) variabel yang paling dominan berpengaruh terhadap Return On Equity dengan nilai Standar coeffisien beta terbesar 0,314 atau 31,4% yakni Debt to equity ratio.Kata kunci : Perputaran modal kerja, Financial Leverage, Debt to equity dan Return On Equity
LAPORAN KULIAH KERJA PRAKTEK (KKP) PT CONSOLIDATED ELECTRIC POWER ASIA DI KABUPATEN WAJO
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STRATEGI SOMBA GARASSI ART DALAM MEMPERTAHANKAN EKSISTENSI SANGGAR SENI PADA MASA PANDEMI DI KABUPATEN GOWA
No full textGreen's function molecular dynamics meets discrete dislocation plasticity
No full textMetals deform plastically at the asperity level when brought in contact with a counter body even when the nominal contact pressure is small. Modeling the plasticity of solids with rough surfaces is challenging due to the multi-scale nature of surface roughness and the length-scale dependence of plasticity. While discrete-dislocation plasticity (DDP) simulations capture size-dependent plasticity by keeping track of the motion of individual dislocations, only simple two-dimensional surface geometries have so far been studied with DDP. The main computational bottleneck in contact problems modeled by DDP is the calculation of the dislocation image fields. We address this issue by combining two-dimensional DDP with Green's function molecular dynamics. The resulting method allows for an efficient boundary-value-method based treatment of elasticity in the presence of dislocations. We demonstrate that our method captures plasticity quantitatively from single to many dislocations and that it scales more favorably with system size than conventional methods. We also derive the relevant Green's functions for elastic slabs of finite width allowing arbitrary boundary conditions on top and bottom surface to be simulated
STRATEGI SOMBA GARASSI ART DALAM MEMPERTAHANKAN EKSISTENSI SANGGAR SENI PADA MASA PANDEMI DI KABUPATEN GOWA
No full textSanggar Somba garassi Art adalah sanggar yang sampai saat ini masih tetap eksis
di tengah pandemi, sanggar ini masih aktif melakukan kegiatan pelatihan seni dan
tidak kurang tawaran pekerjaan walaupun adanya pembatasan kegiatan oleh
pemerintah di tengah pandemi covid-19.Jenis penelitian ini adalah penelitian
kualitatif yang bersifat deskriptif.Penelitian ini dilakukan dengan
wawancara,dokumentasi dan observasi secara langsung. Sumber data dalam
penelitian ini diperoleh dari informan yaitu pemilik sanggar. Teknik yang
digunakan dalam pengumpulan data adalah teknik wawancara,dokumentasi,dan
observasi
Hasil penelitian ditemukan Strategi yang digunakan Sanggar Somba Garassi Art
dalam mempertahankan eksistensi di masa pandemi yaitu dengan menerapkan
strategi pelatihan yaitu menggunakan skill training dan strategi pemasaran
menggunakan mediaa sosia sebagai wadah promosi .Faktor-faktor yang
mempengaruhi strategi Sanggar Somba Garassi Art dalam mempertahankan
esksistensi di masa pandemi yaitu ada dua yaitu faktor eksternal dan faktor
internal. Faktor eksternal meliputi orangtua dari anggota sanggar dan eksistensi
sanggar. Sedangkan faktor internal yang mempengaruhi yaitu sarana dan
prasarana sanggar dan pranoid atau ketakutan berlebih.
Kata kunci: Eksistensi, Strategi, Faktor, Sanggar Seni
STRATEGI SOMBA GARASSI ART DALAM MEMPERTAHANKAN EKSISTENSI SANGGAR SENI PADA MASA PANDEMI DI KABUPATEN GOWA
No full textANALISIS LAYOUT TERHADAP EFEKTIFITAS KERJA KARYAWAN PADA PT CONSOLIDATED ELECTRIC POWER ASIA DIWAJO
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ANALISIS LAYOUT TERHADAP EFEKTIFITAS KERJA KARYAWAN PADA PT CONSOLIDATED ELECTRIC POWER ASIA DI WAJO/TA 2017
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Green's function molecular dynamics: Including finite heights, shear, and body fields
No full textThe Green's function molecular dynamics (GFMD) method for the simulation of incompressible solids under normal loading is extended in several ways: shear is added to the GFMD continuum formulation and Poisson numbers as well as the heights of the deformed body can now be chosen at will. In addition, we give the full stress tensor inside the deformed body. We validate our generalizations by comparing our analytical and GFMD results to calculations based on the finite-element method (FEM) and full molecular dynamics simulations. For the investigated systems we observe a significant speed-up of GFMD compared to FEM. While calculation and proof of concept were conducted in two-dimensions only, the methodology can be extended to the three-dimensional case in a straightforward fashion
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