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Journal articles on the topic 'Indenter nose shape'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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1

Uddin, Mohammad, Graham Stevens, and Daniel Williams. "Effect of Indenter Nose Shape and Layer Configuration on the Quasi-Static Perforation Behaviour of Metal–Plastic Laminates." Materials 15, no. 17 (2022): 5879. http://dx.doi.org/10.3390/ma15175879.

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This study investigated the perforation resistance behaviour of metal–plastic laminates (MPLs) when they are indented by different nose shapes. Aluminium (Al) and HDPE (high-density polyethylene) layers were bonded with a suitable adhesive in an alternative manner to prepare bilayer and trilayer MPL configurations. Quasi-static perforation experiments were performed with hemispherical, conical and blunt indenters. The effects of nose shape, layer configuration and adhesive on the force–deformation profile, perforation resistance capacity and failure mechanisms were evaluated. The results indic
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2

Sadeghi, Mohammad, and Mohammad Hossein Pol. "Investigation of behaviors of glass/epoxy laminate composites reinforced with carbon nanotubes under quasi-static punch shear loading." Journal of Sandwich Structures & Materials 21, no. 4 (2017): 1535–56. http://dx.doi.org/10.1177/1099636217719223.

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In this paper, in addition to investigation of the effects of adding of nanotubes on the tensile properties of epoxy matrix and glass/epoxy laminate composite, the effects of adding of nanotubes and the effect of indenter shape on quasi-static punch shear properties of glass/epoxy laminate are experimentally studied. Laminate nanocomposites have 12 layers of plain weave glass fibers which are made by hand lay-up method. Resin is composed of a two-component epoxy; Epon 828 as the base and Epikure F-205 as the curing agent. Multi-walled carbon nanotubes modified by hydroxid (–COOH) are used with
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3

Ahmadi, H., M. Ekrami, H. Sabouri, and M. Bayat. "Experimental and numerical investigation on the effect of projectile nose shape in low-velocity impact loading on fiber metal laminate panels." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233, no. 10 (2018): 3665–79. http://dx.doi.org/10.1177/0954410018804384.

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In this paper, low-velocity impact responses of 2/1 GLARE 3 (a commercial type of fiber metal laminate) specimens were studied experimentally and numerically. The effects of indenter's nose shape (flat, conical, and hemispherical) on energy absorption and failure mechanisms were thoroughly investigated. Drop weight testing machine with different impact energies was used for experimental tests and numerical simulation was also carried out. Failure mechanisms, such as delamination, debonding, aluminum sheet rupture, and composite laminate fracture, were discussed by sectioning the tested specime
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4

SampathKumar, Deepak, Thirumalaikumarasamy Duraisamy, Thirumal Pattabi, and AshokKumar Mohankumar. "Static puncture resistance characteristics with various indenter nose shape geometry perforation of shear thickening fluid impregnated polypropylene fabric for soft armour application." Polymers and Polymer Composites 30 (January 2022): 096739112110633. http://dx.doi.org/10.1177/09673911211063303.

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At present, puncture resistance and rheological performance of shear thickening fluid (STF) is an essential design requirement for a soft armour material (target sample). The target sample is prepared with a dip and dry process of STF impregnated woven polypropylene (PP) fabric. These samples were tested and compared with neat PP fabric. The penetration depth of target samples is highly sensitive to the coefficient of friction between the indenter’s nose shape geometry and the target sample. The STF is prepared by mechanical dispersion of synthesized microsphere silica microparticles at a volu
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5

Taghizadeh, Seyed Ahmad, Gholamhossein Liaghat, Abbas Niknejad, and Ehsan Pedram. "Experimental study on quasi-static penetration process of cylindrical indenters with different nose shapes into the hybrid composite panels." Journal of Composite Materials 53, no. 1 (2018): 107–23. http://dx.doi.org/10.1177/0021998318780490.

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The main aim of the present research is to investigate the quasi-static penetration process of cylindrical indenters with different nose shapes into multilayered composite panels made of Dyneema and Glass woven fibers, and aluminum face sheets. For better understanding of the perforation mechanism of the composite panels, effects of indenter geometry, stacking sequences, and boundary conditions are studied and their effects on energy absorption, specific absorbed energy, maximum deformation, peak load, and failure modes are evaluated and discussed. Samples with different layering configuration
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6

Mohagheghian, I., W. J. Stronge, and G. J. McShane. "Predicting indenter nose shape sensitivity for quasi-static perforation of thin metallic plates." European Journal of Mechanics - A/Solids 61 (January 2017): 134–50. http://dx.doi.org/10.1016/j.euromechsol.2016.09.004.

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7

Husain, Afsar, Sanan Husain Khan, Abdel Hamid I. Mourad, and Raisuddin Ansari. "Ballistic Performance of Polycarbonate Plate Subjected to Truncated Cone Projectile." Diffusion Foundations and Materials Applications 36 (November 6, 2024): 67–73. http://dx.doi.org/10.4028/p-ud2b0i.

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In the present study, a quasi-static compression test and impact test are carried out on a Polycarbonate plate with thickness of 2.66 mm and an effective diameter of 205 mm. The impact test is carried out on a pneumatic gun using a hardened truncated cone projectile of mass 25.8 g at different velocities. On the other hand, a servo mechanical universal testing machine with a 50 kN capacity is used to carry out the quasi-static compression test at a speed of 2 mm/min adopting an indenter of truncated nose shape. The Dynamic Enhancement Factor, or DEF, is computed as the ratio of quasi-static pe
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8

Guo, Zherui, James Zheng, and Weinong Chen. "Reverse ballistics penetration of Kevlar® fabric with different indenters at different loading rates." Textile Research Journal 87, no. 10 (2016): 1165–76. http://dx.doi.org/10.1177/0040517516648513.

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In this study, the mechanical load on a bullet-shaped indenter when impacted by a single-ply Kevlar fabric was experimentally investigated using a reverse ballistics method at both quasi-static and dynamic rates. Different indenter geometries, namely the 9-mm Luger, .223 Remington, and .308 Winchester bullet geometries, were used. The penetration load of the stationary indenter was measured using a force transducer located behind the indenter, and the penetration load was then plotted against the impact velocity of the fabric sample. Different mechanisms of penetration were observed at differe
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9

Dixit, A., R. K. Misra, and H. S. Mali. "Finite element analysis of quasi-static indentation of woven fabric textile composites using different nose shape indenters." Materialwissenschaft und Werkstofftechnik 46, no. 10 (2015): 1014–28. http://dx.doi.org/10.1002/mawe.201500405.

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10

Menčík, J., and M. V. Swain. "Errors associated with depth-sensing microindentation tests." Journal of Materials Research 10, no. 6 (1995): 1491–501. http://dx.doi.org/10.1557/jmr.1995.1491.

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In the determination of mechanical properties by ultra-microindentation, various errors can appear. This paper analyzes various sources of errors in estimation of elastic modulus and hardness. These errors arise from uncertainties of the indenter geometry and properties, as well as measuring instrument limitations and errors, such as the minimum detectable load, compliance, and noise of the system. Other sources of errors are thermal drift, shape of the impression, and scatter of properties of the tested material. Characteristic features and the magnitude of individual kinds of errors are disc
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11

FLORES-JOHNSON, E. A., Q. M. LI, and LUMING SHEN. "NUMERICAL SIMULATIONS OF QUASI-STATIC INDENTATION AND LOW VELOCITY IMPACT OF ROHACELL 51 WF FOAM." International Journal of Computational Methods 11, supp01 (2014): 1344004. http://dx.doi.org/10.1142/s0219876213440040.

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Numerical simulations of quasi-static indentation and low velocity impact of low density polymethacrylimide (PMI) Rohacell 51 WF foam using indenters with different nose shapes (conical, truncated-conical, hemi-spherical and flat) were carried out using the finite element code LS-DYNA. A 2D axisymmetric model was generated. A strain-rate dependent material model and r-adaptive remeshing were used for low velocity impact simulations. Numerical predictions matched the available experimental data very well. Moreover, the predicted resistance force closely matched the empirical results. The result
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12

Boughamda, Walid. "Boundary stabilization for a star-shaped network of variable coefficients strings linked by a point mass." Discrete & Continuous Dynamical Systems - S 15, no. 5 (2022): 1103. http://dx.doi.org/10.3934/dcdss.2021139.

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<p style='text-indent:20px;'>This study is concerned with the pointwise stabilization for a star-shaped network of <inline-formula><tex-math id="M1">\begin{document}$ N $\end{document}</tex-math></inline-formula> variable coefficients strings connected at the common node by a point mass and subject to boundary feedback dampings at all extreme nodes. It is shown that the closed-loop system has a sequence of generalized eigenfunctions which forms a Riesz basis for the state Hilbert space. As a consequence, the spectrum-determined growth condition fulfills. In the me
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13

Baruscotti, Axel, Yuri Borgianni, and Franco Concli. "Quasi-Static Penetration Properties of 3D-Printed Composite Plates." Materials 17, no. 11 (2024): 2536. http://dx.doi.org/10.3390/ma17112536.

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This work investigated the impact and piercing load resistance (energy absorption capabilities) of 3D-printed composites plates manufactured by means of the Fused-Filament-Fabrication (FFF) technique. Two sets of reinforced composite plates were produced. The first set of plates was printed with short-carbon-fiber-reinforced polyamide-12, while the second set was reinforced with continuous fibers. The plates were tested with quasi-static indentation tests at various Span-to-Punch ratios and with three different indenter nose shapes (blunt, hemispherical, and conical). The quasi-static measurem
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14

Wei, Yu, Shuangxi Zhang, Mengkui Li, et al. "Regional lithospheric deformation beneath the East Qinling-Dabie orogenic belt based on ambient noise tomography." Geophysical Journal International 228, no. 2 (2021): 1294–312. http://dx.doi.org/10.1093/gji/ggab393.

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SUMMARY The Qinling–Dabie orogenic belt, which contain the arc-shaped Dabbashan orocline and is the world's largest belt of HP/UHP metamorphic rocks, formed by a long-term complex amalgamation process between the North China Block and the Yangtze Block. To understand the collision processes and tectonic evolution, we constructed a 3-D S-wave velocity model from the surface to a depth of ∼120 km in the eastern Qinling-Dabie orogenic belt and its adjacent region by inverting 5–70 s phase velocity dispersion data of Rayleigh waves extracted from ambient noise data. Our 3-D model reveals low veloc
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15

Suci, Dewi Nur, and Intan Nuyulis Naeni Puspitasari. "The Insights of Glocalization In Islamic Primary Education." Madrasah 9, no. 2 (2017): 169. http://dx.doi.org/10.18860/jt.v9i2.4733.

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<span style="font-family: BookAntiqua; font-size: 11pt; color: #000000; font-style: normal; font-variant: normal;">The expansion of internationalization has challenged education advancement<span style="font-family: BookAntiqua; font-size: 11pt; color: #000000; font-style: normal; font-variant: normal;"> in 21th century which is not only at Islamic higher education level but also at the Islamic <span style="font-family: BookAntiqua; font-size: 11pt; color: #000000; font-style: normal; font-variant: normal;">primary education sphere. For preparing young learners to engage in th
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16

Febrianti, Erga Armela, and Abd Rohman Taufiq. "ANALISIS PENGARUH INFLASI, BI RATE, NILAI TUKAR KURS, INDEKS HANG SENG DAN INDEKS DOW JONES TERHADAP RETURN SAHAM (STUDI EMPIRIS PT. SEMEN INDONESIA PERIODE 2009-2016)." INVENTORY: JURNAL AKUNTANSI 2, no. 2 (2018): 369. http://dx.doi.org/10.25273/inventory.v2i2.3293.

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<span style="font-family: CIDFont+F7; font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>This study aims to provide empirical evidence of partial or simultaneous influence</em><span style="font-family: CIDFont+F7; font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em> between Inflation, BI Rate, Exchange Rate, Hang Seng Index and Dow Jones Index on</em><span style="font-family: CIDFont+F7; font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em> Stock Return (Empirical
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17

Lestari, R. A. Widyanti Diah. "STUDI FENOMENOLOGI: MEMAKNAI TATA KELOLA PERUSAHAAN PADA BISNIS KELUARGA BERETNIS TIONGHOA DI INDONESIA." INVENTORY: JURNAL AKUNTANSI 2, no. 2 (2018): 307. http://dx.doi.org/10.25273/inventory.v2i2.3290.

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<span style="font-family: CIDFont+F8; font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>Family business in Indonesia has contributed more than half of Gross Domestic Product (GDP).</em><span style="font-family: CIDFont+F8; font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em> This makes the presence of family businesses, especially ethnic Chinese, an interesting</em><span style="font-family: CIDFont+F8; font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em> phenomenon
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18

Fauziah, Asyifa, Widodo Widodo, and Syahid Syahid. "The Effect Of Family Harmony And Emotional Intelligence On Social Studies Learning Achievement Of Junior High School Students In Bogor Regency." Herodotus: Jurnal Pendidikan IPS 6, no. 3 (2023): 398. http://dx.doi.org/10.30998/herodotus.v6i3.20273.

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<p class="AbstractContent">The purpose of this study was to determine the effect of family harmony and emotional intelligence together on social studies learning achievement. The research method used is a survey method with multiple linear regression techniques, which is a research method that takes a sample from a population and uses a questionnaire as a data collection tool. The population came from 4 schools at level VIII, namely Prima Bangsa Terpadu Junior High School, Al-Husna Junior High School, and Wirabuana Junior High School and Citayam Plus Junior High, totaling 527. The result
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19

Flores-Johnson, E. A., and Q. M. Li. "Experimental study of the indentation of sandwich panels with carbon fibre-reinforced polymer face sheets and polymeric foam core." Elsevier, July 1, 2011. https://doi.org/10.5281/zenodo.811043.

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This paper presents experimental studies on the quasi-static indentation of a rigid indenter into sandwich panels with carbon fibre-reinforced polymer face and polymeric foam core. It was found that both nose shape and foam core density have large influence on the indentation response of the sandwich panels in terms of absorbed energy, indentation at failure and damage area. A dependency of the indentation load on the supporting condition was observed. It was also found that the difference in indentation resistance between the sandwich panel and its corresponding core material depends on the c
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20

Flores-Johnson, E. A., and Q. M. Li. "Indentation into Polymeric Foams." Elsevier, June 19, 2017. https://doi.org/10.5281/zenodo.810987.

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The effects of the nose shape of rigid indenters on the indentation behaviour of polymethacrylimide(PMI) and polyetherimide(PEI) foams with different densities are investigated. Experimental results show that indentation resistance depends on the geometry of the indenter and the density of the foam. Analytical models based on the deformation mechanisms observed in experiments are developed to predict the indentation resistance. It shows that the analytical predictions are in good agreement with experimental measurements for a range of polymeric foams. This study presents a complete and systema
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21

Flores-Johnson, E. A., and Q. M. Li. "Indentation into Polymeric Foams." Elsevier, June 19, 2017. https://doi.org/10.5281/zenodo.810989.

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The effects of the nose shape of rigid indenters on the indentation behaviour of polymethacrylimide(PMI) and polyetherimide(PEI) foams with different densities are investigated. Experimental results show that indentation resistance depends on the geometry of the indenter and the density of the foam. Analytical models based on the deformation mechanisms observed in experiments are developed to predict the indentation resistance. It shows that the analytical predictions are in good agreement with experimental measurements for a range of polymeric foams. This study presents a complete and systema
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22

Flores-Johnson, E. A., and Q. M. Li. "Indentation into Polymeric Foams." Elsevier, June 19, 2017. https://doi.org/10.5281/zenodo.810991.

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The effects of the nose shape of rigid indenters on the indentation behaviour of polymethacrylimide(PMI) and polyetherimide(PEI) foams with different densities are investigated. Experimental results show that indentation resistance depends on the geometry of the indenter and the density of the foam. Analytical models based on the deformation mechanisms observed in experiments are developed to predict the indentation resistance. It shows that the analytical predictions are in good agreement with experimental measurements for a range of polymeric foams. This study presents a complete and systema
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23

Xia, Fukun, PJ Tan, and Dong Ruan. "Failure mechanisms of corrugated sandwich panels under transverse three-point bending." Journal of Sandwich Structures & Materials, April 24, 2022, 109963622210865. http://dx.doi.org/10.1177/10996362221086517.

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The failure mechanism of corrugated sandwich panels under three-point bending is investigated experimentally and numerically using ABAQUS/Standard. Three dominant modes of failure, viz. face buckling, face yielding and core buckling, previously reported by others, were also identified here and they were found to be affected by the face-sheet thickness, core height and the corrugation angle of the panel. It will be shown that the deformation map, and regime boundaries, theoretically predicted previously by Valdevit et al. are valid only for restricted cases when the indenter and support pins ar
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24

Kontomaris, S. V., A. Malamou, and A. Stylianou. "Is it necessary to calculate Young’s modulus in AFM nanoindentation experiments regarding biological samples?" Micro and Nanosystems 12 (February 14, 2020). http://dx.doi.org/10.2174/1876402912666200214123734.

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Background: The determination of the mechanical properties of biological samples using Atomic Force Microscopy (AFM) at the nanoscale is usually performed using basic models arising from the contact mechanics theory. In particular, the Hertz model is the most frequently used theoretical tool for data processing. However, the Hertz model requires several assumptions such as homogeneous and isotropic samples and indenters with perfectly spherical or conical shapes. As it is widely known, none of these requirements are 100 % fulfilled for the case of indentation experiments at the nanoscale. As a
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25

Gordillo, J. M., H. Lhuissier, and E. Villermaux. "On the cusps bordering liquid sheets." Journal of Fluid Mechanics 754 (July 30, 2014). http://dx.doi.org/10.1017/jfm.2014.397.

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AbstractThe edge of a stationary radially expanding liquid sheet and the receding rim bordering a plane sheet are naturally indented. It presents a collection of cusps at the extremity of which the liquid concentrates and is expelled. An experimental description of these cusps for a stationary flat inviscid Savart sheet is given. We identify the stable node–jet structure responsible for the deflection of the incoming flow at the rim and demonstrate how these cusps are the structures that accommodate for both mass and momentum conservation at the sheet edge. Their shape, their number around the
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26

Sun, Megan Y. "Information Flow And Trading Dynamics: A Theoretical Approach." Journal of Business & Economics Research (JBER) 7, no. 4 (2011). http://dx.doi.org/10.19030/jber.v7i4.2275.

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<p class="normal15" style="line-height: normal; text-indent: 0in; margin: 0in 0.5in 0pt;"><span style="font-family: "Times New Roman","serif"; font-size: 10pt;">This paper constructs a theoretical mixture of distributions model to describe the impacts of permanent fundamental, transitory fundamental, and non-fundamental shocks on returns, volatility and volume.<span style="mso-spacerun: yes;">  </span>Under the assumption that informed traders share homogenous fundamental information, we find that only contemporaneous noise t
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27

Zhang, Yufan, Jay Reddy, Maysamreza Chamanzar, and Wenzhen Yuan. "A Novel Parylene C Waveguide‐Based High‐Resolution Photonic Tactile Array Sensor." Advanced Materials Technologies, October 24, 2024. http://dx.doi.org/10.1002/admt.202400752.

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AbstractRecent advances in manufacturing technology and new material processes have enabled novel device designs. As the growing field of robotic tactile sensing calls for advanced tactile sensors, waveguide‐based tactile sensors have shown promising mechanisms but system‐level integrated solutions are needed to demonstrate their feasibility for sensor applications. In this work, a novel ultra‐compact high‐resolution tactile sensor based on asymmetric Mach‐Zehnder interferometers (MZI) is proposed: PITS (Photonic Integrated Tactile Sensor). It is made from Parylene C waveguides using the Paryl
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28

Larkin, Patrick, Baeyong Lee, and Abdoul Wane. "Repurchase Dividend Reinvestment Plans (Repurchase DRIPS)." Journal of Business & Economics Research (JBER) 3, no. 10 (2011). http://dx.doi.org/10.19030/jber.v3i10.2819.

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<p class="MsoBodyTextIndent" style="text-align: justify; line-height: normal; text-indent: 0in; margin: 0in 0.5in 0pt; mso-pagination: none;"><span style="font-family: Times New Roman;"><span style="font-size: 10pt;">We investigate the determinants of firms' decision to offer </span><span style="font-size: 10pt; mso-fareast-language: KO;">Repurchase </span><span style="font-size: 10pt;">Dividend Reinvestment Plans (</span><span style="font-size: 10pt; mso-fareast-language: KO;">Repurchase </span><span style="font-size: 10pt;">DR
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29

Collins-Gearing, Brooke. "Not All Sorrys Are Created Equal, Some Are More Equal than ‘Others’." M/C Journal 11, no. 2 (2008). http://dx.doi.org/10.5204/mcj.35.

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We ask you now, reader, to put your mind, as a citizen of the Australian Commonwealth, to the facts presented in these pages. We ask you to study the problem, in the way that we present the case, from the Aborigines’ point of view. We do not ask for your charity; we do not ask you to study us as scientific-freaks. Above all, we do not ask for your “protection”. No, thanks! We have had 150 years of that! We ask only for justice, decency, and fair play. (Patten and Ferguson 3-4) Jack Patten and William Ferguson’s above declaration on “Plain Speaking” in Aborigines Claim Citizenship Rights! A Sta
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