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Articles 31 - 60 of 472
Full-Text Articles in Social and Behavioral Sciences
Explosive Breaching Of Walls With Contact Charges: Theory And Applications, Alex Remennikov, Igor Mentus, Brian Uy
Explosive Breaching Of Walls With Contact Charges: Theory And Applications, Alex Remennikov, Igor Mentus, Brian Uy
Faculty of Engineering and Information Sciences - Papers: Part A
Breaching activities are required for military operations in urban environment and for firefighters in emergency situations for saving lives. Explosive wall breaching is a key capability in military operations in urban terrain environments where the close proximity of urban structures significantly restricts the use of large demolition charges. Explosive breaching is also used by special operations groups as a means to gain entry into a structure where conventional breaching methods are not sufficient or the emergency situation requires immediate entry to save lives. This paper develops an analytical model for the explosive breaching of protective targets such as concrete and …
Modelling The Performance Of A Permeable Reactive Barrier Utilised To Reduce The Risk Of Acidic Groundwater In The Shoalhaven Floodplain, U Pathirage, B Indraratna
Modelling The Performance Of A Permeable Reactive Barrier Utilised To Reduce The Risk Of Acidic Groundwater In The Shoalhaven Floodplain, U Pathirage, B Indraratna
Faculty of Engineering and Information Sciences - Papers: Part A
Acidic groundwater generated from acid sulfate soil (ASS) usually carries high concentrations of aluminium (Al) and iron (Fe), which create unfavourable conditions to living habitat. The ASS research team at the University of Wollongong, Australia implemented an innovative geotechnical engineering technique for the remediation of acidic groundwater through a permeable reactive barrier (PRB) using recycled concrete aggregates as the reactive material. This PRB was installed at the Shoalhaven Floodplain, southeast New South Wales (NSW), Australia in October 2006 and has proved effective in neutralisation of groundwater by increasing the pH from 3.6 to 7 and removing 99% of Al and …
2d Versus 3d Collaborative Online Spaces For Student Team Meetings: Comparing A Web Conferencing Environment And A Video-Augmented Virtual World, Sasha Nikolic, Mark Jw Lee, Peter J. Vial
2d Versus 3d Collaborative Online Spaces For Student Team Meetings: Comparing A Web Conferencing Environment And A Video-Augmented Virtual World, Sasha Nikolic, Mark Jw Lee, Peter J. Vial
Faculty of Engineering and Information Sciences - Papers: Part A
BACKGROUND OR CONTEXT Teamwork is an integral component of any engineering degree, but students often have difficulty organising team meetings outside of class times due to discrepancies in their individual study timetables as well as their family and work commitments. Rich-media synchronous online technologies such as video/web conferencing and virtual worlds can be used to help address this problem by enabling anyplace, anytime interaction, while at the same time mirroring the communication modes students will encounter in their future workplaces. However, not much is known about how these technologies compare with one another for facilitating different types of collaborative learning …
Babai Round-Off Cvp Method In Rns: Application To Latice Based Cryptographic Protocols, Jean-Claude Bajard, Julien Eynard, Nabil Merkiche, Thomas Plantard
Babai Round-Off Cvp Method In Rns: Application To Latice Based Cryptographic Protocols, Jean-Claude Bajard, Julien Eynard, Nabil Merkiche, Thomas Plantard
Faculty of Engineering and Information Sciences - Papers: Part A
Lattice based cryptography is claimed as a serious candidate for post quantum cryptography, it recently became an essential tool of modern cryptography. Nevertheless, if lattice based cryptography has made theoretical progresses, its chances to be adopted in practice are still low due to the cost of the computation. If some approaches like RSA and ECC have been strongly optimized - in particular their core arithmetic operations, the modular multiplication and/or the modular exponentiation - lattice based cryptography has not been arithmetically improved. This paper proposes to fill the gap with a new approach using Residue Number Systems, RNS, for one …
Efficient Dynamic Provable Data Possession With Public Verifiability And Data Privacy, Clementine Gritti, Willy Susilo, Thomas Plantard
Efficient Dynamic Provable Data Possession With Public Verifiability And Data Privacy, Clementine Gritti, Willy Susilo, Thomas Plantard
Faculty of Engineering and Information Sciences - Papers: Part A
We present a Dynamic Provable Data Possession (PDP) system with Public Verifiability and Data Privacy. Three entities are involved: a client who is the owner of the data to be stored, a server that stores the data and a Third Party Auditor (TPA) who may be required when the client wants to check the integrity of its data stored on the server. The system is publicly verifiable with the possible help of the TPA who acts on behalf of the client. The system exhibits data dynamicity at block level allowing data insertion, deletion and modification to be performed. Finally, the …
Using Neural Networks To Forecast Available System Resources: An Approach And Empirical Investigation, Yun-Fei Jia, Zhi Quan Zhou, Ke-Xian Xue, Lei Zhao, Kai-Yuan Cai
Using Neural Networks To Forecast Available System Resources: An Approach And Empirical Investigation, Yun-Fei Jia, Zhi Quan Zhou, Ke-Xian Xue, Lei Zhao, Kai-Yuan Cai
Faculty of Engineering and Information Sciences - Papers: Part A
Software aging refers to the phenomenon that software systems show progressive performance degradation or a sudden crash after longtime execution. It has been reported that this phenomenon is closely related to the exhaustion of system resources. This paper quantitatively studies available system resources under the real-world situation where workload changes dynamically over time. We propose a neural network approach to first investigate the relationship between available system resources and system workload and then to forecast future available system resources. Experimental results on data sets collected from real-world computer systems demonstrate that the proposed approach is effective.
Experimental Investigation Of An Innovative Hvac System With Integrated Pvt And Pcm Thermal Storage For A Net-Zero Energy Retrofitted House, Massimo Fiorentini, Paul Cooper, Zhenjun Ma, Josh Wall
Experimental Investigation Of An Innovative Hvac System With Integrated Pvt And Pcm Thermal Storage For A Net-Zero Energy Retrofitted House, Massimo Fiorentini, Paul Cooper, Zhenjun Ma, Josh Wall
Faculty of Engineering and Information Sciences - Papers: Part A
This paper presents the experimental investigation of a novel solar assisted HVAC system developed for the Team UOW Solar Decathlon house, the overall winner of the Solar Decathlon China 2013 competition. This novel HVAC system consists of an air based photovoltaic-thermal (PVT) system and a phase change material (PCM) thermal storage unit integrated with a ducted system with a reverse-cycle heat pump. The system has been designed for operation during both winter and summer, using daytime solar radiation and night sky radiative cooling to increase the energy efficiency of the air-conditioning system. The PVT system can exchange heat with the …
In Vitro Mechanical Fatigue Behavior Of Poly-Ɛ-Caprolactone Macroporous Scaffolds For Cartilage Tissue Engineering: Influence Of Pore Filling By A Poly(Vinyl Alcohol) Gel, J A. Panadero, L Vikingsson, J L. Gomez Ribelles, Senentxu Lanceros-Méndez, Vitor Sencadas
In Vitro Mechanical Fatigue Behavior Of Poly-Ɛ-Caprolactone Macroporous Scaffolds For Cartilage Tissue Engineering: Influence Of Pore Filling By A Poly(Vinyl Alcohol) Gel, J A. Panadero, L Vikingsson, J L. Gomez Ribelles, Senentxu Lanceros-Méndez, Vitor Sencadas
Faculty of Engineering and Information Sciences - Papers: Part A
Polymeric scaffolds used in regenerative therapies are implanted in the damaged tissue and submitted to repeated loading cycles. In the case of articular cartilage engineering, an implanted scaffold is typically subjected to long-term dynamic compression. The evolution of the mechanical properties of the scaffold during bioresorption has been deeply studied in the past, but the possibility of failure due to mechanical fatigue has not been properly addressed. Nevertheless, the macroporous scaffold is susceptible to failure after repeated loading-unloading cycles. In this work fatigue studies of polycaprolactone scaffolds were carried by subjecting the scaffold to repeated compression cycles in conditions simulating …
Development Of Magnetoelectric Cofe2o4 /Poly(Vinylidene Fluoride) Microspheres, R Goncalves, P M. Martins, Daniela M. Correia, Vitor Sencadas, J L. Vilas, L M. Leon, Gabriela Botelho, Senentxu Lanceros-Méndez
Development Of Magnetoelectric Cofe2o4 /Poly(Vinylidene Fluoride) Microspheres, R Goncalves, P M. Martins, Daniela M. Correia, Vitor Sencadas, J L. Vilas, L M. Leon, Gabriela Botelho, Senentxu Lanceros-Méndez
Faculty of Engineering and Information Sciences - Papers: Part A
Magnetoelectric microspheres based on piezoelectric poly(vinylidene fluoride) (PVDF) and magnetostrictive CoFe2O4 (CFO), a novel morphology for polymer-based ME materials, have been developed by an electrospray process. The CFO nanoparticle content in the (3-7 mm diameter) microspheres reaches values up to 27 wt%, despite their concentration in the starting solution reaching values up to 70 wt%. Additionally, the inclusion of magnetostrictive nanoparticles into the polymer spheres has no relevant effect on the piezoelectric b-phase content (z60%), crystallinity (40%) and the onset degradation temperature (460-465 C) of the polymer matrix. The multiferroic microspheres show a maximum piezoelectric response |d33| …
Design Of Holes And Web Openings In Railway Prestressed Concrete Sleepers, Erosha Kahawatta Gamage, Sakdirat Kaewunruen, Alex M. Remennikov
Design Of Holes And Web Openings In Railway Prestressed Concrete Sleepers, Erosha Kahawatta Gamage, Sakdirat Kaewunruen, Alex M. Remennikov
Faculty of Engineering and Information Sciences - Papers: Part A
As the crosstie beam in railway track systems, the prestressed concrete sleepers (or railroad ties) are principally designed in order to carry wheel loads from the rails to the ground. Their design takes into account static and dynamic loading conditions. It is evident that prestressed concrete has played a significant role as to maintain the high endurance of the sleepers under low to moderate repeated impact loads. In spite of the most common use of the prestressed concrete sleepers in railway tracks, there have always been many demands from rail engineers to improve serviceability and functionality of concrete sleepers. For …
Application Of The Theory Of Constraints To The Pillar Development Cycle Of An Underground Coal Mine, Ernest Baafi, Dalin Cai, Ian Porter
Application Of The Theory Of Constraints To The Pillar Development Cycle Of An Underground Coal Mine, Ernest Baafi, Dalin Cai, Ian Porter
Faculty of Engineering and Information Sciences - Papers: Part A
The underground coal mine pillar development cycle consists primarily of three sets of interdependent and synchronised cycles, i.e., the coal cutting cycle by a continuous miner (CM), the support cycle by a roof bolter and the coal transport cycle to the boot end by a shuttle car. Coal cutting by a CM is generally not seen as a constraint as, in almost all cases, the capacity of the CM far exceeds the demand placed on it. Therefore, in essence, the pillar development process can be either transport constrained or support constrained. Using a discrete simulation model, it was shown that …
Investigating The Shear Behaviour Of Fouled Ballast Using Discrete Element Modelling, Ngoc Trung Ngo, Buddhima Indraratna, Cholachat Rujikiatkamjorn
Investigating The Shear Behaviour Of Fouled Ballast Using Discrete Element Modelling, Ngoc Trung Ngo, Buddhima Indraratna, Cholachat Rujikiatkamjorn
Faculty of Engineering and Information Sciences - Papers: Part A
For several hundred years, the design of railway tracks has practically remained unchanged. Traditionally, rail tracks are placed on a ballast layer due to several reasons, including economy, rapid drainage, and high load bearing capacity. The primary function of ballast is to distributing dynamic track loads to sub-ballast and subgrade layers, while also providing lateral resistance and allowing for rapid drainage. Upon repeated trainloads, the ballast becomes fouled due to ballast degradation and the intrusion of fines which adversely affects the strength and deformation behaviour of ballast. This paper presents the use of three-dimensional discrete element method (DEM) in studying …
Global Analysis Of The Generalised Helfrich Flow Of Closed Curves Immersed In Rn, Glen Wheeler
Global Analysis Of The Generalised Helfrich Flow Of Closed Curves Immersed In Rn, Glen Wheeler
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper we consider the evolution of regular closed elastic curves γ immersed in Rn. Equipping the ambient Euclidean space with a vector field : Rn → Rn and a function f : Rn → R, we assume the energy of γ is smallest when the curvature κ of γ is parallel to c0 = ( ◦ γ)+(f ◦ γ)τ, where τ is the unit vector field spanning the tangent bundle of γ. This leads us to consider a generalisation of the Helfrich functional Hc0 λ , defined as the sum of the integral of |κ − c0| 2 …
Spectral Flow For Nonunital Spectral Triples, A L. Carey, V Gayral, J Phillips, A Rennie, F A. Sukochev
Spectral Flow For Nonunital Spectral Triples, A L. Carey, V Gayral, J Phillips, A Rennie, F A. Sukochev
Faculty of Engineering and Information Sciences - Papers: Part A
We prove two results about nonunital index theory left open in a previous paper. The first is that the spectral triple arising from an action of the reals on a C*-algebra with invariant trace satisfies the hypotheses of the nonunital local index formula. The second result concerns the meaning of spectral flow in the nonunital case. For the special case of paths arising from the odd index pairing for smooth spectral triples in the nonunital setting, we are able to connect with earlier approaches to the analytic definition of spectral flow.
Free Paratopological Groups, Ali Sayed R. Elfard
Free Paratopological Groups, Ali Sayed R. Elfard
Faculty of Engineering and Information Sciences - Papers: Part A
Let FP(X) be the free paratopological group on a topological space X in the sense of Markov. In this paper, we study the group FP(X) on a Pα-space X where α is an infinite cardinal and then we prove that the group FP(X) is an Alexandroff space if X is an Alexandroff space. Moreover, we introduce a neighborhood base at the identity of the group FP(X) when the space X is Alexandroff and then we give some properties of this neighborhood base. As applications of these, we prove that the group FP(X) is T0 if X is T0, we characterize …
Maskdensity14: An R Package For The Density Approximant Of A Univariate Based On Noise Multiplied Data, Yan-Xia Lin, Mark James Fielding
Maskdensity14: An R Package For The Density Approximant Of A Univariate Based On Noise Multiplied Data, Yan-Xia Lin, Mark James Fielding
Faculty of Engineering and Information Sciences - Papers: Part A
Lin (2014) developed a framework of the method of the sample-moment-based density approximant, for estimating the probability density function of microdata based on noise multiplied data. Theoretically, it provides a promising method for data users in generating the synthetic data of the original data without accessing the original data; however, technical issues can cause problems implementing the method. In this paper, we describe a software package called MaskDensity14, written in the R language, that uses a computational approach to solve the technical issues and makes the method of the sample-moment-based density approximant feasible. MaskDensity14 has applications in many areas, such …
Solvability Conditions For Indefinite Linear Quadratic Optimal Stochastic Control Problems And Associated Stochastic Riccati Equations, Kai Du
Faculty of Engineering and Information Sciences - Papers: Part A
A linear quadratic optimal stochastic control problem with random coefficients and indefinite state/control weight costs is usually linked to an indefinite stochastic Riccati equation (SRE), which is a matrix-valued quadratic backward stochastic differential equation along with an algebraic constraint involving the unknown. Either the optimal control problem or the SRE is solvable only if the given data satisfy a certain structure condition that has yet to be precisely defined. In this paper, by introducing a notion of subsolution for the SRE, we derive several novel sufficient conditions for the existence and uniqueness of the solution to the SRE and for …
Oscillating Water Column Wave Energy Conversion Device Response Spectra, Brad Stappenbelt
Oscillating Water Column Wave Energy Conversion Device Response Spectra, Brad Stappenbelt
Faculty of Engineering and Information Sciences - Papers: Part A
The objective of the present work is to serve as a practical addendum to the discrete parameter Oscillating Water Column (OWC) Wave Energy Conversion (WEC) device model proposed by Folley and Whittaker [1] at the 24th International Conference on Offshore Mechanics and Arctic Engineering. In particular, a method for the interpretation of their discrete parameter model is presented, consisting of a translation from the tuning and air compressibility parameter map reported to a response spectrum representation. In this more commonly encountered form the model is more readily physically interpreted for design and analysis application.
A Framework For The Destructuring Of Clays During Compression, M D. Liu, S Horpibulsuk, Y J. Du
A Framework For The Destructuring Of Clays During Compression, M D. Liu, S Horpibulsuk, Y J. Du
Faculty of Engineering and Information Sciences - Papers: Part A
Based on the work by Liu and Carter (1999, 2000), a framework for the compression behaviour of structured clays is proposed, in which two entities of an existing soil are differentiated and described clearly: the original structure of the soil and the destructuring the soil has experienced. A theoretical Compression Destructuring Line (CDL) is proposed to describe the whole destructuring process of soil from its original or un-destructured state. Soils of the same original structure form a unique CDL, irrespective of loading history or structuring/destructuring history. The "theoretical" original structure of a soil is represented by parameters A and c, …
Application Of Optical-Fiber Bragg Grating Sensors In Monitoring The Rail Track Deformations, S.K. Karimullah Hussaini, Buddhima Indraratna, Jayan S. Vinod
Application Of Optical-Fiber Bragg Grating Sensors In Monitoring The Rail Track Deformations, S.K. Karimullah Hussaini, Buddhima Indraratna, Jayan S. Vinod
Faculty of Engineering and Information Sciences - Papers: Part A
The lateral flow of ballast during the passage of trains can reduce the stability of rail tracks. Therefore, it is important to monitor and restrain the movement of ballast accordingly in order to prevent track misalignment. This current study explored the use of optical-Fiber Bragg Grating (FBG) sensors to measure the lateral displacement of unreinforced and geogrid-reinforced ballast. The tests were conducted on fresh latite basalt at a loading frequency of 20 Hz and up to 250 000 load cycles. The test results showed that the FBG sensing system is fully capable of measuring the lateral displacement of ballast under …
Modelling The Shear Behaviour Of Sedimentary Rock Joints Under Constant Normal Stiffness Conditions, S Thirukumaran, B Indraratna, E T. Brown
Modelling The Shear Behaviour Of Sedimentary Rock Joints Under Constant Normal Stiffness Conditions, S Thirukumaran, B Indraratna, E T. Brown
Faculty of Engineering and Information Sciences - Papers: Part A
The typical shear behaviour of rock joints has been studied under a constant normal load (CNL) or zero normal stiffness condition, but recent studies have shown that this boundary condition may not replicate more practical situations, and that constant normal stiffness (CNS) is a more appropriate boundary condition to describe the stress-strain response of field joints. In addition to the effect of boundary conditions, the shear behaviour of a rough joint also depends on its surface properties and the initial stress acting on its interface. Despite this, exactly how these parameters affect the shear behaviour of joints is not fully …
Nepal Earthquake Of April 25, 2015, T G Sitharam, J S. Vinod
Nepal Earthquake Of April 25, 2015, T G Sitharam, J S. Vinod
Faculty of Engineering and Information Sciences - Papers: Part A
A powerful earthquake of magnitude (M) 7.8 occurred on April 25, 2015 at the plate boundary between Indian plate and Eurasian plate. The epicenter of this earthquake is located approximately 80 km northwest of Kathmandu, Nepal. This epicenter location is near to the district Gorkha for which it is also called as Gorkha earthquake. The convergent movement of the Indian plate with the Eurasian plate resulted in the strain accumulation along major faults and hence produced many significant earthquakes along the boundary in past. This earthquake is as severe as its predecessor event, the 1934 Nepal-Bihar earthquake where the fatalities …
Current Msis Students' Views On Program Outcomes, Heikki Topi, Helena Karsten, Susan A. Brown, Joao Alvaro Carvalho, Brian Donnellan, Jun Shen, Bernard C. Y Tan, Mark F. Thouin
Current Msis Students' Views On Program Outcomes, Heikki Topi, Helena Karsten, Susan A. Brown, Joao Alvaro Carvalho, Brian Donnellan, Jun Shen, Bernard C. Y Tan, Mark F. Thouin
Faculty of Engineering and Information Sciences - Papers: Part A
This paper reports the results of a pilot survey sent to current specialized master’s students in Information Systems at several universities around the world. The survey was developed to support the MSIS revision process, but the results will also provide insights on the perceptions of current IS master’s students regarding their current degree program. The results suggest that the respondents valued individual foundational skills and high-level business competences more than technical or lower-level managerial competences. The study utilized competence specifications from the European e-CF 3.0 model, which was useful and performed well as a competence framework.
Master’S Degree Programs In Information Systems: A Global View, Helena Karsten, Heikki Topi, Susan A. Brown, Joao Alvaro Carvalho, Brian Donnellan, Jun Shen, Bernard C. Y Tan, Mark F. Thouin
Master’S Degree Programs In Information Systems: A Global View, Helena Karsten, Heikki Topi, Susan A. Brown, Joao Alvaro Carvalho, Brian Donnellan, Jun Shen, Bernard C. Y Tan, Mark F. Thouin
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper, we present an analysis of 254 master’s degree programs in Information Systems, offered by 229 universities in 32 countries. The entry requirements usually include a Bachelor’s degree in IS or a related subject. In some countries such as USA any kind of Bachelor’s degree is acceptable. In a few countries significant relevant work experience can replace or supplement the BSc. The duration of the degrees varies between one to two years, with the student workload between 1350-3200 hours. If we take into consideration the differences in entering the program (from none to four years of IS studies), …
A Summary Of The Special Issue “Cybersecurity And Cryptography”, Qiong Huang, Guomin Yang
A Summary Of The Special Issue “Cybersecurity And Cryptography”, Qiong Huang, Guomin Yang
Faculty of Engineering and Information Sciences - Papers: Part A
Nowadays in the cyber world, massive amounts of data are being collected, transmitted, and stored by different organizations and individuals. As an important asset, data must be well protected in storage and during transmission. Data security is a crucial factor to the success of new information technologies and infrastructures, such as Cloud Computing and Big Data. This Special Issue includes seven research articles presenting new findings and technologies in the area of cybersecurity and cryptography.
The Effects Of It Application Orchestration Capability On Performance, Magno Queiroz, Rajeev Sharma, Tim Coltman, Paul Tallon
The Effects Of It Application Orchestration Capability On Performance, Magno Queiroz, Rajeev Sharma, Tim Coltman, Paul Tallon
Faculty of Engineering and Information Sciences - Papers: Part A
This paper investigates the effects on performance of a firm's capability to orchestrate its portfolio of IT applications. It conceives of IT application orchestration as a dynamic capability and develops a model where the effects of this capability on performance are mediated by an important IT-enabled business outcome: Process agility. Results from an international survey of IT executives show that IT application orchestration capability has a direct positive effect on agility, which in turn improves performance. Further, we show that agility fully mediates the effect of IT application orchestration capability on performance. This paper extends prior theory by proposing and …
Using The Wii Remote For Mobile Device Application Testing: A Proof-Of-Concept, Mark Freeman
Using The Wii Remote For Mobile Device Application Testing: A Proof-Of-Concept, Mark Freeman
Faculty of Engineering and Information Sciences - Papers: Part A
There has been a dramatic shift in the interaction methods of mobile devices over the past decade. From devices simply being able to make phone calls to being able to handle complex tasks traditionally performed on personal computers PCs; this change has led to new interaction issues that need to be understood during the application development process, particularly as these devices now commonly incorporate a touch-screen as their primary source of input. Currently, the methods of conducting software user experience testing of these devices employs techniques that were developed for PCs, however mobile devices are used within different contexts of …
Telemetry, Tracking And Command Subsystem For Libyasat-1, Faisel Em M Tubbal, Akram Alkaseh, Asem Elarabi
Telemetry, Tracking And Command Subsystem For Libyasat-1, Faisel Em M Tubbal, Akram Alkaseh, Asem Elarabi
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper we present the design and the analysis of Telemetry, Tracking and Command Subsystem (TT&CS) for Libyan imaging mini-satellite (LibyaSat-1). This subsystem is the brain and the operating system of any satellite or spacecraft as it performs three important functions; tracking mini-satellite position, monitoring mini-satellite health and status and processing received and transmitted data. Moreover, the uplink and downlink budgets for s-band and x-band antennas are presented. We also designed s-band C-shaped patch antenna for command receiver (2.039 GHz). Electromagnetic simulation was performed to this antenna High Frequency Structure Simulator (HFSS). Our results show that the s-band C-shaped …
Sparse Approximate Inference For Spatio-Temporal Point Process Models, Botond Cseke, Andrew Zammit-Mangion, Tom Heskes, Guido Sanguinetti
Sparse Approximate Inference For Spatio-Temporal Point Process Models, Botond Cseke, Andrew Zammit-Mangion, Tom Heskes, Guido Sanguinetti
Faculty of Engineering and Information Sciences - Papers: Part A
Spatio-temporal log-Gaussian Cox process models play a central role in the analysis of spatially distributed systems in several disciplines. Yet, scalable inference remains computationally challenging both due to the high resolution modelling generally required and the analytically intractable likelihood function. Here, we exploit the sparsity structure typical of (spatially) discretised log-Gaussian Cox process models by using approximate message-passing algorithms. The proposed algorithms scale well with the state dimension and the length of the temporal horizon with moderate loss in distributional accuracy. They hence provide a flexible and faster alternative to both non-linear filtering-smoothing type algorithms and to approaches that implement …
Thz Spectroscopic Characterization Of Biochar, Lucia Lepodise, R A. Lewis, Stephen D. Joseph, Joseph Horvat
Thz Spectroscopic Characterization Of Biochar, Lucia Lepodise, R A. Lewis, Stephen D. Joseph, Joseph Horvat
Faculty of Engineering and Information Sciences - Papers: Part A
Fertile dark soils made by humans in the Amazon basin, terra preta, have influenced the manufacture of the biochar based fertilizers. Different types of biochar exist but not all of them are good in improving the quality of the soil. FTIR was used to distinguish between the more and the less fertile biochar.