Effects of deep excavation on pile behaviour by Vindy

“…Piles are often subjected to lateral loads from activities, such as excavation, tunneling, embankment, and slope failure. This report will focus on the effect of deep excavation on adjacent pile behaviour.Parametric studies using plane strain and three-dimensional finite element analyses programs, PLAXIS 2D and PLAXIS 3D Foundation are carried out to investigate the various aspects that influence the pile responses such as the effect of wall stiffness (flexible, medium and stiff walls), pile diameter (0.6 m and 1 m diameter), distance from pile to the primary wall (1 m and 5 m), and undrained shear strength of the soil which is assumed to increase linearly with depth of excavation. …”
Get full text

Numerical analysis in rock cavern design by Yong, Yoon Chee.

“…Due to advancements in tunneling and supporting technology, underground space development has entered a new phase in Singapore. …”
Get full text

Skyrmion qubits: challenges for future quantum computing applications by Psaroudaki, Christina, Peraticos, Elias, Panagopoulos, Christos

“…Magnetic nano-skyrmions develop quantized helicity excitations, and the quantum tunneling between nano-skyrmions possessing distinct helicities is indicative of the quantum nature of these particles. …”
Get full text

Effects of lateral soil movements on piles by Socheat, Iv.

“…Moreover, deep excavation is commonly done near the existing buildings such as construction of basement of new buildings and construction of underground MRT or tunneling. All of these constructions can cause damage to existing piles and this is because the lateral soil movements resulting from these construction activities can induce forces and moments in the piles. …”
Get full text

Quantifying the permeability reduction of biogrouted rock fracture by Wu, Chuangzhou, Chu, Jian, Wu, Shifan, Guo, Wei

“…Cementitious or chemical grouts are often used for seepage control by sealing the rock joints in the areas, where caverns or tunnels are going to be constructed (Warner 2004; Bruce et al. 2006; Tongwa et al. 2013; Wu et al. 2017). …”
Get full text

Channel modelling using 5G for accurate positioning by Teo, Si Cheng

“…These limitations are often common in our land-scarce Singapore, as the country has common attributes such as buildings and underground tunnels. Therefore, they are susceptible to these limitations. …”
Get full text

Ansatz for the quantum phase transition in a dissipative two-qubit system by Zheng, Hang, Lü, Zhiguo, Zhao, Yang

“…First, the ground-state phase diagram is analyzed in the presence of the Ohmic and sub-Ohmic bath using an analytic ground-state wave function that takes into account the competition between intrasite tunneling and intersite correlation. The quantum critical point is determined as the transition point from a nondegenerate to a degenerate ground state, and our calculated critical coupling strength αc agrees with that from the numerical renormalization-group method. …”
Get full text
Get full text

Continuous terahertz emission from dipolaritons by Kristinsson, Kristinn, Kyriienko, Oleksandr, Liew, Timothy Chi Hin, Shelykh, Ivan A.

“…We propose a scheme of continuous tunable THz emission based on dipolaritons, mixtures of strongly interacting cavity photons and direct excitons, where the latter are coupled to indirect excitons via tunneling. We investigate the property of multistability under continuous wave (CW) pumping, and the stability of the solutions. …”
Get full text
Get full text

Effect of pore-size distribution on unsaturated shear strength of residual soil from sedimentary Jurong formation by Ong, Weilin.

“…There is a need to understand the engineering properties and characteristics of residual soils in Singapore for the construction of tunnels and for slope stability analysis. Thus the results have a direct application on stability of unsaturated residual soil slopes.…”
Get full text

Improved reverse bias stability in p–i–n perovskite solar cells with optimized hole transport materials and less reactive electrodes by Jiang, F, Shi, Y, Rana, TR, Morales, D, Gould, IE, McCarthy, DP, Smith, JA, Christoforo, MG, Yaman, MY, Mandani, F, Terlier, T, Contreras, H, Barlow, S, Mohite, AD, Snaith, HJ, Marder, SR, MacKenzie, JD, McGehee, MD, Ginger, DS

“…Previous research has emphasized the role of iodide and silver oxidation, and the role of hole tunnelling from the electron-transport layer into the perovskite to enable the flow of current under reverse bias in causing degradation. …”

Search for QCD instantons at the LHC using the ATLAS Detector by Harris, YT

“…QCD instantons are semi-classical solutions of the Yang-Mills equations of motion and correspond to tunneling processes between topologically distinct vacuum sectors. …”

Influence of Si nanocrystal distributed in the gate oxide on the MOS capacitance by Zhao, P., Yang, X. H., Ng, Chi Yung, Chen, Tupei, Ding, Liang, Yang, Ming, Wong, Jen It, Tse, Man Siu, Trigg, Alastair David, Fung, Stevenson Hon Yuen

“…In this paper, the authors have studied the influence of silicon nanocrystal (nc-Si) distributed in the gate oxide on the capacitance for the circumstances that the nc-Si does not form conductive percolation tunneling paths connecting the gate to the substrate. …”
Get full text
Get full text

Electrical characterization of Si Nanowire based devices – transistors and SONOS memory by Xiong, Tian Zhong.

“…Results has shown that the SONOS memory has much enhanced P/E speed, which can be explained by the augment of electric-field across the tunneling dielectrics near the silicon core-channel due to the scaled dimension as well as the smaller radius of curvatures at the four corners of the wire with highly scaled squarish SiNW channel. …”
Get full text

High performance nano-scale measurements by advanced atomic force estimation by Cui, Song

“…Binnig and his collaborators in 1986 after the invention of scanning tunnelling microscopy (STM) in the early 1980s. The AFM system deploys a tiny probe to interact with the sample such that topography information of the sample can be obtained. …”
Get full text

Grouting in rock cavern - a case study by Chew, Wei Kwang

“…In this report, we study two tunnels in Singapore’s Jurong Rock Cavern (JRC), namely OT0-1C and OT1-2, in order to determine the parameters that may potentially give a reasonable estimate for the amount grout needed. …”
Get full text

Nonvolatile resistive switching in Pt/LaAlO3/SrTiO3 heterostructures by Wu, Shuxiang, Luo, Xin, Turner, Stuart, Peng, Haiyang, Lin, Weinan, Ding, Junfeng, David, Adrian, Wang, Biao, Van Tendeloo, Gustaaf, Wang, Junling, Wu, Tom

“…Interestingly, the switching between low-resistance and high-resistance states is accompanied by reversible transitions between tunneling and Ohmic characteristics in the current transport perpendicular to the planes of the heterojunctions. …”
Get full text
Get full text

Experimental investigation of bedding plane orientation on the rockburst behavior of sandstone by He, M. C., Nie, W., Zhao, Z. Y., Guo, Wei

“…Rockburst is a violent rock failure process which poses a significant threat to human safety in mining and tunneling construction. Although many in situ investigations provided valuable insights on the rockburst mechanism, the failure and rock fragmentation process during a rockburst cannot be fully examined on the site. …”
Get full text
Get full text

Influence of mixed modifier fluoride on tuning the AC and dielectric properties of xBaF2–(50–x)CaF2–50B2O3 glass system by Sahapini, N. F. M., Winie, Tan, Azlan, M. N., Zaid, M. H. M., Hisam, R.

“…All glass samples followed the Overlapping Large-Polaron Tunneling (OLPT) model for the conduction mechanism. …”

Use of hardening soil model for excavation in residual soil by Sherly

“…Nowadays, many buildings require underground spaces for carparks and underground spaces are required for MRT stations or tunnels. Thus, braced excavation is required for deep excavation projects to ensure overall system stability. …”
Get full text

Development of an RF positioning system by Rege, Laukik Jayesh

“…Similarly, GNSS does not work accurately in indoor environments like tunnels, parking garages etc. The aim of this dissertation is to develop a system which uses RF based wireless communication for positioning and navigation in the aforementioned GNSS deprived environments. …”
Get full text