bluuebunny/crossref_metadata_2025 huggingface dataset:
A Rock Mechanics Approach for Compressibility Determination: an Important Input for Petroleum Reservoir Simulation
Authors: Falcão Flávia  , Soares Antonio Claudio  , Compan André Luiz  , Cruz Dario  , Justen Júlio César  , Surmas Rodrigo  , Silveira Ana Julia
Published: February 2025

The main method to predict and manage petroleum reservoirs is numerical simulation in which, traditionally, the only geomechanical parameter is rock compressibility. Usually it is adopted one single and constant value for the whole model. During exploitation, though, reservoir-rock deforms, causing porosity and permeability variation. While the first effect may not be well predicted by rock compressibility, the second is simply kept constant. Besides that, each facies has its own stress-strain behavior. Even though reservoir simulation models are very sensitive to compressibility values, it is not treated with the proper relevance: it is usually used as a matching parameter and, when special petrophysical experiments are not available, it is a common practice to use porosity and facies based correlations to determine reservoir compressibility. The compressibility may be used to represent geomechanics in three different forms: (i) in conventional reservoir simulation, in a simplified way of representing geomechanics; (ii) in pseudo-coupling, in which the rock compressibility behavior may be taken to reservoir simulation through tables that correlate pore pressure to porosity and permeability multipliers and (iii) in two-way coupling simulation, in which the compressibility may be one of the coupling parameters. The aim of this work is to show the importance of rock compressibility in reservoir simulation and to propose a better way of representing it in numerical models based on laboratory experiments.
Análisis de Vaciado de un Túnel
Authors: Solari Rodrigo  , Cánchero Joaquín
Published: February 2025

El proyecto hidroeléctrico Chacayes se encuentra ubicado en Chile, en la Región 6 del Libertador O'Higgins. Genera energía utilizando las aguas de los ríos Cachapoal y Cipreses. MWH ha prestado sus servicios a la empresa constructora Astaldi ejecutando la ingeniería de detalle y la asistencia técnica para la ejecución. Como parte de los trabajos realizados, se evaluaron las velocidades máximas de vaciado del Túnel de Baja Presión. Durante este proceso se debían contemplar ciertas pautas en cuanto a la relación presión interior, presión exterior y tiempo de descenso, de modo de controlar el empuje externo sobre el revestimiento del túnel. Se han usado programas de modelación geotécnica para simular el comportamiento del flujo de agua durante el vaciado y la consecuente variación de las presiones exteriores con el avance del mismo. Se utilizó el análisis de transitorios para estudiar el cambio de presión de agua externa en el tiempo, mientras que la presión interna se reduce por el vaciado. Esta simulación se verificó utilizando varios modelos estáticos, para lograr resultados más confiables.
Numerical Modeling as a Tool to Refine Bench Designs in Open Pits
Authors: Silva Guzmán Rodrigo  , Yáñez Saavedra Sergio
Published: February 2025

The correct design of open pit mines depends, among other things, on the slope design at different scales, which must deal with the geotechnical stability and the safety of personnel and equipment. In this regard, the bench scale design procedures that rely on prediction of the spill length of failed wedges currently lack of a robust definition of the conversion from a solid volume of rock forming a wedge into a pile of broken material. At present, the assumption of a bulked density is the main consideration for estimating the maximum spill length of the broken material. This approach, however, disregards the inherent complexity of rock masses and the likely influence of the internal discontinuities and/or defects into the actual potential for disintegration of a failed volume.
Aplicación del Análisis de Sensibilidad en Taludes para la Determinación de los Parámetros de Resistencia
Authors: Garcia Sánchez Francisco  , Condado Bernal Gonzalo
Published: February 2025

En este artículo se muestra un caso práctico en donde se presentan la metodología empleada dentro del análisis de sensibilidad para la determinación de los parámetros de resistencia de los materiales que conciernen al sitio del proyecto. Complementándose más con el modelo geológico, la geometría de los taludes, así como la superficie de rotura o deslizamiento supuesto.
Elderly Surgical Patients: Automated Computation of Healthcare Quality Indicators by Data Reuse of EHR
Authors: Ficheur Grégoire  , Schaffar Aurélien  , Caron Alexandre  , Balcaen Thibaut  , Beuscart Jean-Baptiste  , Chazard Emmanuel
Published: February 2025

The objective of the work is to implement and evaluate the automated computation of 9 healthcare quality indicators, by data reuse of electronic health records, in the field of elderly surgical patients. Methods: Data are extracted from EHR, including administrative data, ICD10 diagnoses, laboratory results, procedures, administered drugs, and free-text letters. The indicators are implemented by a medical data reuse specialist. The conformity rate is automatically computed (3.5 minutes for 15,000 inpatient stays and 9 indicators). A medical expert reviews 45 stays per indicator. The precision is the proportion of non-conform inpatient stays among the cases detected as non-conform by the algorithms. Results: the paper describes the implemented algorithms, the conformity rates and the precisions. Two indicators have a precision of 0%, 3 indicators have a precision of 40 to 60%, and four indicators have a precision from 80 to 100% (for 2 of them, the conformity rate is lower than 2.5%!). This demonstrates that automated quality screening is possible and enables to detect threatening situations. The implementation of the indicators requires special skills in medicine, medical information sciences, and algorithmics. Failures of precision are mainly due to defaults of information quality (missing codes), and could benefit from text analysis.
Participatory Design, User Involvement and Health IT Evaluation
Authors: Kushniruk Andre  , Nøhr Christian
Published: February 2025

End user involvement and input into the design and evaluation of information systems has been recognized as being a critical success factor in the adoption of information systems. Nowhere is this need more critical than in the design of health information systems. Consistent with evidence from the general software engineering literature, the degree of user input into design of complex systems has been identified as one of the most important factors in the success or failure of complex information systems. The participatory approach goes beyond user-centered design and co-operative design approaches to include end users as more active participants in design ideas and decision making. Proponents of participatory approaches argue for greater end user participation in both design and evaluative processes. Evidence regarding the effectiveness of increased user involvement in design is explored in this contribution in the context of health IT. The contribution will discuss several approaches to including users in design and evaluation. Challenges in IT evaluation during participatory design will be described and explored along with several case studies.
Piloting the European Unified Patient Identity Management (EUPID) Concept to Facilitate Secondary Use of Neuroblastoma Data from Clinical Trials and Biobanking
Authors: Ebner Hubert  , Hayn Dieter  , Falgenhauer Markus  , Nitzlnader Michael  , Schleiermacher Gudrun  , Haupt Riccardo  , Erminio Giovanni  , Defferrari Raffaella  , Mazzocco Katia  , Kohler Jan  , Tonini Gian Paolo  , Ladenstein Ruth  , Schreier Guenter
Published: February 2025

Data from two contexts, i.e. the European Unresectable Neuroblastoma (EUNB) clinical trial and results from comparative genomic hybridisation (CGH) analyses from corresponding tumour samples shall be provided to existing repositories for secondary use. Utilizing the European Unified Patient IDentity Management (EUPID) as developed in the course of the ENCCA project, the following processes were applied to the data: standardization (providing interoperability), pseudonymization (generating distinct but linkable pseudonyms for both contexts), and linking both data sources. The applied procedures resulted in a joined dataset that did not contain any identifiers that would allow to backtrack the records to either data sources. This provided a high degree of privacy to the involved patients as required by data protection regulations, without preventing proper analysis.
Data Driven Methods for Predicting Blood Transfusion Needs in Elective Surgery
Authors: Hayn Dieter  , Kreiner Karl  , Kastner Peter  , Breznik Nada  , Hofmann Axel  , Gombotz Hans  , Schreier Günter
Published: February 2025

Research in blood transfusions mainly focuses on Donor Blood Management, including donation, screening, storage and transport. However, the last years saw an increasing interest in recipient related optimizations, i.e. Patient Blood Management (PBM). Although PBM already aims at reducing transfusion rates by pre- and intra-surgical optimization, there is still a high potential of improvement on an individual level. The present paper investigates the feasibility of predicting blood transfusions needs based on datasets from various treatment phases, using data which have been collected in two previous studies. Results indicate that prediction of blood transfusions can be further improved by predictive modelling including individual pre-surgical parameters. This also allows to identify the main predictors influencing transfusion practice. If confirmed in a prospective dataset, these or similar predictive methods could be a valuable tool to support PBM with the ultimate goal to reduce costs and improve patient outcomes.
Classification of knee arthropathy with accelerometer-based vibroarthrography
Authors: Moreira Dinis  , Silva Joana  , Correia Miguel V.  , Massada Marta
Published: February 2025

One of the most common knee joint disorders is known as osteoarthritis which results from the progressive degeneration of cartilage and subchondral bone over time, affecting essentially elderly adults. Current evaluation techniques are either complex, expensive, invasive or simply fails into detection of small and progressive changes that occur within the knee. Vibroarthrography appeared as a new solution where the mechanical vibratory signals arising from the knee are recorded recurring only to an accelerometer and posteriorly analyzed enabling the differentiation between a healthy and an arthritic joint. In this study, a vibration-based classification system was created using a dataset with 92 healthy and 120 arthritic segments of knee joint signals collected from 19 healthy and 20 arthritic volunteers, evaluated with k-nearest neighbors and support vector machine classifiers. The best classification was obtained using the k-nearest neighbors classifier with only 6 time-frequency features with an overall accuracy of 89.8% and with a precision, recall and f-measure of 88.3%, 92.4% and 90.1%, respectively. Preliminary results showed that vibroarthrography can be a promising, non-invasive and low cost tool that could be used for screening purposes. Despite this encouraging results, several upgrades in the data collection process and analysis can be further implemented.
Preliminary Evaluation of a Web-Oriented Assessment Tool for Emotion Recognition
Authors: Pampouchidou Anastasia  , Kazantzaki Eleni  , Karatzanis Ioannis  , Marias Kostas  , Tsiknakis Manolis  , Meriaudeau Fabrice  , Yang Fan  , Simos Panagiotis
Published: February 2025

Perceiving and identifying emotions on facial expressions is one of the basic abilities that compose emotional intelligence, and is crucial for normal social functions. It is well documented that facial expression conveys information about felt emotion, and that expressive behavior can activate or regulate the emotion required by a given situation. Instruments measuring emotion perception based on facial expression have been found in literature either as stand-alone scales or as part of other tests. The proposed tool expands existing instruments to combine online availability while affording assessment of emotion recognition on a continuum of intensity. It was founded on Ekman's Facial Action Units, with two Virtual Characters (male and female) portraying five basic emotions Anger, Disgust, Fear, Joy, Sadness, plus Neutral expression. The user can navigate on the custom-made pentagon and choose the emotion and intensity level (1–5) through a single click. The preliminary evaluation of the tool on thirty normal subjects provided threshold data that can later be used as benchmarks to assess emotion perception sensitivity in psychiatric disorders such as depression and schizophrenia characterized by emotional dysfunction.
Observational method to predict future settlements
Authors: Länsivaara T.
Published: February 2025

Settlement observations can well be used to directly predict future settlements. The settlement potential method offers a simple concept for this. Case record evaluations show, that the value of settlement potential reaches a constant value generally after some years, and remains this value for a long period of time. Two approaches are discussed which enable reliable settlement predictions even before a constant settlement potential value is reached. As the settlement potential is based on the time resistance concept, it also provides field values for the creep number. Also other methods are discussed, but they generally need a much longer time period to be able to provide reliable settlement estimations.
The influence of the variation of effective stress on the serviceability of soil nailed slopes
Authors: Davies Michael C.R.  , Morgan Neil
Published: February 2025

Cuttings and embankment structures form an important component of the infrastructure for waterways, railway and highway transport networks. In the United Kingdom many of these structures were constructed over 100 years ago and over time, as a result of the effect of long term changes in effective stress, the stability and, hence, the serviceability of some of these structures has reduced. Soil nailing is an earth reinforcement technique that can be used to stabilise such cuttings and embankments. A study, centred on a series of centrifuge model experiments, was conducted to investigate the serviceability performance under both short and long term conditions of earth structures that have been stabilised using the technique of soil nailing. The experiments showed that the nail loads can increase significantly when an earth structure is subjected to a reduction in effective stress resulting from an increase in pore water pressure. In addition, the cyclic applications of changes in effective stress increases nail loads and slope displacements.
Ground improvement in a coralline deposit in Barbados, W.I.
Authors: Dittrich J.P.  , Boone S.J.  , Hutchinson A.E.
Published: February 2025

Coralline soils at the site of a generation plant expansion project in Barbados posed challenges to the design of generator foundations due to their highly variable nature. Ground improvement by vibrodensification/stone column construction was used to increase relative denisty, minimize the presence of voids and reduce the potential for large total and differential foundation settlements. This paper describes the challenges associated with improvement of the coralline deposit using this method and presents the results of soil improvement quality assurance testing using the Standard Penetration Test (SPT) and cross-hole seismic geophysics.
Ultimate bearing capacity of shallow foundation on geogrid-reinforced sand
Authors: Patra C.R.  , Mandal J.N.  , Das B.M.
Published: February 2025

Results of laboratory model tests for the ultimate bearing capacity of strip foundations on geogrid-reinforced sand are presented. The depth of embedment of the model foundation was varied from zero to B (width of foundation). The results have been compared with the existing bearing capacity theory.
Excavation induced building damage
Authors: Portugal João Candeias  , Portugal Alexandre  , Santo Acácio
Published: February 2025

Ground decompression is usually associated to underground excavation, generally leading to subsidence of the surface. Consequences of such movements on existing buildings must be evaluated especially in urban areas. In this paper a Building Risk Assessment (BRA) method of the type proposed by Burland is presented. Initially, surface movement induced by excavations is analysed. Possible consequences on neighbouring structures are then outlined using classifications of damages. Typical damage categories are related to serviceability parameters, past performance of buildings, namely, structural type and behaviour, and its position towards excavation works. Past performance and data behaviour of buildings are used to correct serviceability parameters in order to predict risk of damage. Protective measures for each risk category are established. The method for risk assessment is then presented and exemplified. The paper concludes with a discussion on its usefulness and consequences on monitoring activities and plans.
Tunnel design in hilly area of Taiwan High Speed Rail project
Authors: Duann S.W.  , Peng J.F.  , Chiao C.H.  , Ando S.
Published: February 2025

The Taiwan High Speed Rail (THSR) runs through several hilly areas in the northwestern island of Taiwan and there are therefore quite many tunnels constructed along the alignment. Special considerations are required for the design of these tunnels due to the face of soil-like rock strata, low overburden and underpassing the existing freeway with cover as thin as 9 m. The frequently used numerical-statistical classification methods like Bienawski's RMR-system or NGI's Q-system are not applicable for these tunnels. Considerations are also given to auxiliary measures, special portal design criteria for THSR, and effects of asymmetrical loads and earthquake loads. Various monitoring systems were then adopted to verify the initial design parameters and assumptions. The results reveal that the deformation and convergence of tunnel linings are significantly affected by the asymmetrical loads due to inclined topograpy, unfavorable bedding conditions and the poor strength of rocks.
Influence of existing building load on the deformation and earth pressure of ground due to tunneling
Authors: Nakai T.  , Shahin H.M.  , Hinokio M.  , Sada T.  , Sung E.
Published: February 2025

To investigate the influence of existing building load on the deformation and earth pressure of the ground in shallow tunneling, two-dimensional trap-door model tests and the corresponding numerical analyses are carried out. A stack of aluminum rods is used in the model tests. Shallow and pile foundations supporting an initial dead load are modeled in the laboratory tests and numerical analyses. For the sake of comparison the laboratory tests and numerical simulations for tunneling in the initially undisturbed ground condition (i.e., green field) are performed as well. In the finite element analyses, a recently developed elastoplastic constitutive model, named subloading tij model, is used. The observed and computed results for the ground with existing building load are compared with those for the green field condition.
Interpolation du pénétromètre à partir des vitesses sismiques en offshore
Authors: Elmi F.  , Favre J.-L.
Published: February 2025

La simulation de l'essai au pénétromètre statique nécessite une loi «fine», élastoplastique avec écrouissage. Cette communication rappelle sommairement le modèle utilisé et l'identification de ses paramètres, la simulation du pénétromètre basée sur la modélisation de l'expansion de cavité et la méthode de Salgado avec validation sur des essais en chambre de calibration. La méthode est ensuite validée sur un site terrestre (Merville) à défaut de mesures en grands fonds non encore disponibles dans le projet. La bonne concordance des simulations avec les mesures pénétrométriques est confirmée par les corrélations tirées de la littérature.
Method for estimating railroad track settlements due to dynamic traffic loads
Authors: Queiroz Rudney C.  , Macari Emir José
Published: February 2025

This paper is the result of real-scale physical modeling study designed to simulate the load-deformation characteristics of railroad foundation systems that include the railroad ties, the ballast, and the sub-base layers of a railroad embankment. The study presents comparisons of the application of dynamic loads of 100kN on the rails, and the resulting deformations during a 500,000 cycle testing period for three rail support systems; wood, concrete and steel. The results show that the deformation curve has an exponential shape, with the larger portion of the deformation occurring during the first 50,000 load cycles followed by a tendency to stabilize between 100,000 to 500,000 cycles. These results indicate that the critical phase of deformations of a new railroad is within the first 50,000 cycles of loading, and after that, it slowly attenuates as it approaches a stable value. The paper also presents empirically derived formulations for the estimation of the deformations of the rail supports as a result of rail traffic.
Failure probability of river dikes strengthened with structural elements
Authors: Bakker H.L.
Published: February 2025

Nowadays in the Netherlands river dikes sometimes are strengthened with structural elements like sheet pile walls etc. At present a project is carried out to determine inundation risks of so-called dike rings. This requires calculation of the failure probabilities of the dikes from which these dike rings consists. In this paper a method is presented to calculate on a comparatively quick and easy way an estimate of the failure probability of a river dike strengthened with structural elements. The method makes use of the PLAXIS finite element model, particularly the so-called Phi/C reduction option for the calculation of safety factors. In this paper theoretical background and a practical example are described.
Evaluation of earthfill parameters from Gavoshan dam with back analysis during construction
Authors: Pakbaz Mohammad  , Zolfagharian Mahdi
Published: February 2025

Instrumentation of dams very significant in all large dams by installing instruments as pore Water pressures, earth pressures and displacements ,during construction, first impounding and operation are measured and the performance of dams are evaluated and analyzed . In this paper the performance of Gavooshan dam in the west of Iran during the construction is evaluated with the help of the results of instrumentations. The performance of the dam in the future is also predicted using the result of numerical analysis. During this research it is observed that the performance of dam during the construction in terms of the magnitude of pore water pressures, the coefficient of pore water pressure “ru”, displacement, stresses and the amount of developed arching has been appropriate in comparison with the performance of similar dams in Iran and in the world, and it is in safe condition. Also in back analysis, better parameters for core, transition and shell materials is obtained. Using these parameters the performance of the dam at the end of construction predicted.
Effect of water composition on rockfill compressibility
Authors: Romero E.  , Alonso E.E.  , Hueso O.
Published: February 2025

The paper presents results of oedometer tests on a rockfill-type material aimed at studying the effect of water composition on material deformational response. Flooding tests with different liquids and pore fluid replacement tests were performed at constant vertical stress. Splitting tensile strength tests were also performed to relate the micromechanics of particle fracture to the observed deformational behavior. Osmotic suction was used as the relevant variable to measure and control the influence of the liquid action.
Static and dynamic bending behaviour of piles in clay
Authors: Boominathan A.  , Ayothiraman R.
Published: February 2025

Static and dynamic lateral load tests were carried out on the model aluminium single piles embedded in soft clay to investigate the bending behaviour of piles. Piles with different length to diameter ratio were subjected to static lateral load and steady state harmonic vibrations with different magnitudes of load and wide range of frequencies. The load transferred to the pile, pile head displacement and the strain variation along the length of pile were observed and measured using a Data Acquisition System. The displacement amplitude under dynamic load is magnified by about 2 times the static deflection. The maximum dynamic bending moment is magnified by about 3 to 5 times the maximum static bending moment for piles tested. The maximum dynamic bending moment occurs at a depth of about 2 times the depth of occurrence of maximum static bending moment.
Unified analysis considering pile groups and superstructures
Authors: Won Jin Oh  , Jeong Sangseom  , Lee Cheol Ju
Published: February 2025

A unified analysis procedure is developed for the efficient and accurate design and analysis of bridge pier structures. The nonlinear pile group analysis method based on structural stiffness theory, was adopted for considering the pile-soil-pile and pile-cap interactions, and soil nonlinearity. It extended and then combined with the analysis routine of superstructure. Among the components of bridge pier structures, a pile cap is modeled with four-node flat shell elements and a pier with three-dimensional beam element and the pile-soil-pile interaction is considered by p-multipliers. A nonlinear analysis method is proposed with an incremental and iteration technique in this study. The proposed method for a bridge pier subjected to both axial and lateral loads is verified by comparing with existing computer codes (Group 5.0, FBPier 3.0). Through the comparative studies, it is found that the present method gives similar results with the other analysis codes about lateral displacements. The proposed method is capable of predicting the behavior of a bridge pier installed in nonlinear soils on the various loading conditions.
Progressive failure of slope due to tunnel excavation and its numerical simulation
Authors: Yashima A.  , Zhang F.  , Ye G.L.
Published: February 2025

In the paper, a case history was studied by FEM based on elasto-viscoplastic model with strain softening. In the case history, a natural slope failure occurred due to a tunnel excavation, in which no any evidence of rainfall or underground water movement could be observed. A finite element analysis based on an elasto-viscoplastic model is conducted to simulate the progressive failure of the slope. The mechanical behavior of the slopes, such as the development of shear strain, the deformation of the ground, the propagation of shear band and the progressive failure are discussed in detail.
Liquefaction potential of horizontal layers in successive earthquakes
Authors: Teymur B.  , Madabhushi S.P.G.
Published: February 2025

It is believed that successive earthquakes result in densification of the soil layer decreasing the liquefaction risk. While there is some evidence on re-liquefaction potential of sandy layers in successive earthquakes, very little experimental data exists. In order to investigate this aspect further a series of centrifuge tests was conducted using fine silica sand which is susceptible to liquefaction due to its grain-size distribution. The centrifuge tests were performed at 50g in the ESB model container with accelerations and pore pressures monitored during each test when the sinusoidal ground shaking was applied. This paper presents the results of dynamic centrifuge tests on saturated horizontal sand layers to show the changes between soil layers with different relative densities and during successive earthquakes. It will be shown that with successive earthquakes the loose sand layers densify and are less susceptible to liquefaction. The strength of soil with liquefaction or partial liquefaction varies and therefore it is important to distinguish this in geotechnical design.
Challenges in offshore geotechnics in Southeast Asia
Authors: Leung C.F.
Published: February 2025

The first part of this paper describes the offshore oil and gas exploration activities in Southeast Asia. Typical subsurface conditions in the Sunda Shelf in Southeast Asia are highlighted and hazards in oil and gas exploration caused by the peculiar soil profile and parameters in the region are identified. These hazards include the punch through failure of spudcan supporting mobile jack-up rigs during installation and difficulties in removing the spudcans during extraction. The second part of this paper describes the results of centrifuge model study carried out at the National University of Singapore on punch through hazards during installation of spudcans in layered soils and performance of spudcans during extraction. The study on spudcan punch through reveals that a plug consisting of the overlying stiff soils develops when a spudcan punches through the underlying soft clay layer. Owing to such failure mechanism, conventional bearing capacity theories are not applicable to predict the spudcan punch through phenomenon. The study on spudcan extraction reveals that the suction developed at the spudcan base is the major component in the breakout resistance of spudcan with long operation periods.
Administrative report: TC16 – Ground property characterization by in-situ tests
Authors: Mayne Paul W.  , Powell John J.M.  , Fahey Martin  , Huang An-Bin  , Lunne Tom  , Schnaid Fernando  , Viana da Fonseca Antonio  , Mlynarek Zbigniew
Published: February 2025

This report presents an overview of the activities undertaken by the ISSMGE Technical Committee TC 16 on in-situ testing during the period from 2001 to 2005, including our terms of reference, membership, website, and the 2ndinternational conference on site characterization (ISC-2004, Porto), as well as other meetings & events.
Milestone in earth reinforcement - TC9 activities (2001–2005) -
Authors: Ochiai H.  , Otani J.  , Miyata Y.
Published: February 2025

The general objective of TC-9 in the period 2001-2005 was to focus on the use of full range of developed and new/novel techniques including geosynthetics, nailing, and other methods for ground reinforcement using artificial material placed in the soil. And cooperation with TC-17 whose topic was ground improvements was required. Under these guidelines, not only TC-9 meetings but also the organizing sessions have been done whenever the related international symposia/conferences were held. The joint activities with TC-17 were also examined. A beginning of the activity was the International Symposium on Earth Reinforcement (IS Kyushu 2001), which was held on November 14-16, 2001 in Fukuoka, Japan under the joint-auspices of the Japanese Geotechnical Society and the TC-9. Here in this reportthe activities by TC-9 during this period are summarized. On the basis of these activitiesthe future prospects of TC-9 including theme and activities were also presented.
Reverse behaviour and critical state of sand with small amount of fines
Authors: Bobei D.C.  , Lo S.R.
Published: February 2025

Some recent publications suggest that loose sand with a small amount of fines manifests the so-called “reverse behaviour”. Whilst such unusual behaviour was interpreted in terms of the micro-structural arrangement of fines in the sand matrix, reverse behaviour does not appear to be compatible with the critical state framework. On these premises, this paper presents experimental results that indicate the effect of a small amount of fines is to change considerably the shape and the relative position between the critical state and normal consolidation lines. Additionally, a modified state parameter is defined so that the undrained behaviour of sand with a small amount of fines can be predicted within the critical state framework.
Difference between the values of friction angle Φ derived from the theoretical fracture plane and the reliable one obtained from triaxial tests
Authors: Grammatikopoulos I.N.  , Anagnostopoulos C.A.
Published: February 2025

A series of consolidated drained triaxial tests took place in clay-fine sand specimens of different proportions (number of specimens 12) and in clay-fine sand specimens of a constant proportion containing 2 to 12% cement (number of specimens 12). Microfine cement was used with Blaine over 4500 cm2/g, produced by Titan Co., Greece. Siliceous sand used was uniform with Hazen coefficient 2.45 and its range of particle size was 74 to 840 μm. The basic characteristics of the clay used are: Liquid limit 43.54 %, Plastic limit 25.32%, Water content 61.2%, Activity 0.43, Bulk unit weight 16.68 KN/m3, Dry unit weight 10.17 KN/m3.
Near surface soil properties using electromagnetic and seismic waves
Authors: Yu X.  , Drnevich V.P.  , Nowack R.L.
Published: February 2025

Earthwork compaction evaluation is fundamental to geotechnical engineering. The conventional approach to compaction control makes use of measured water content and dry density. Field measurements of these can be made by nuclear or other standardized test methods. The measured water content and dry density for a given soil are indicators for parameters used in design such as shear modulus, shear strength, and hydraulic conductivity, but do not measure any of these directly. For the design of pavement systems and many other facilities, the shear modulus of the soil is of great value.
Analysis of an excavation with soil nailing using embedded finite elements and advanced constitutive models
Authors: Muniz de Farias Márcio  , Durand Raúl D.  , Nakai Teruo
Published: February 2025

The global safety factor of a slope may be enhanced either by the introduction of structural elements, such as anchors and nails, or by the construction of deep sub-horizontal drains. The finite element analysis of such inclusions, mainly for three-dimensional conditions, is extremely difficult if new meshes are generated for each configuration of inclusions under investigation. However, it is possible to use a single background mesh to investigate different inclusion configurations. There are different ways to achieve this objective and a promising technique is the so-called “embedded” approach. This technique was introduced in a finite element program called ALLFINE. In this paper, the program is applied to analyze the case of an excavation of 6 meters in clayey ground. The excavation design considered the use of passive nail inclusions for stabilization. The problem is analyzed using conventional (Cam clay) and advanced (subloading tij) constitutive models. The results demonstrate the applicability and efficiency of the proposed methodology.
The process of soil cracking and faulting
Authors: Rojas E.  , Arroyo M.  , Arzate J.
Published: February 2025

Ground fissuring is a recurrent problem in many countries where water extraction surpasses the natural recharge of aquifers. Due to differential settlements, the soil layer undergoes deformations and cracks with serious consequences for civil infrastructure. Here an approximate analysis of the fissuring process that can be used to predict the location of cracks is proposed. To that purpose, the ground loss theory is applied to highly compressible sediments overlying a sinusoidal shaped graben. This analysis shows the existence of tensile zones where tension cracks are more likely to appear.
Finite Element analysis of soil-pipeline interaction under lateral loading
Authors: Rouainia M.  , Chan A.C.H.  , Ng P.F.C.
Published: February 2025

In this paper, an elastoplastic model with a non-smooth friction mechanism and a volumetric mechanism is proposed to determine loads on pipes due to relative movements. The model requires the input of the stress-strain curves obtained directly from laboratory stress path on the particular soil studied, in the form of discrete data points. Various axisymmetric triaxial paths are simulated in order to demonstrate the good performance of the proposed model. In addition, several finite element analyses of soil-pipeline interaction under lateral loading have been carried out.
Quality of Chinese CVD Medication Apps
Authors: Liu Yisi  , Chang Polun  , Li Nan  , Lamb Karen V.  , Wang Jiani  , Huang Xiuxiu  , Wang Yi  , Wu Ying
Published: February 2025

The quality of Chinese cardiovascular disease medication apps was evaluated and compared to those in the Google Play Store. Only 21% of 257 CVD medication apps covered medication issues, but the quality is in question. The quality of top 10 CVD medication apps from China was inferior to international apps. An app quality assurance mechanism is needed to ensure patient safety.
Could People Get Quality Apps They Intend to Get? Taking Finding Stroke Apps for Example
Authors: Cui Yanyan  , Fu Chen  , Chang Hong  , Wu Ying  , Chang Polun
Published: February 2025

We conducted a study to evaluate what apps could people get and what quality these apps were when different searching keywords were used to search in different platforms. We took Stroke apps as an example with “Stroke” “Cerebrovascular Disease” and “Zhongfeng” (in Chinese) as the keywords. Two reviewers evaluated apps independently with revised MARS scale. It was interesting to see that people would get different apps from different platforms with different keywords. The results show that a good mechanism is needed to safeguard people obtain right apps from any source with any term in China.
The Experience of the ICNP Francophone Research and Development Centre of Canada with Validating the ICNP® French-Canadian Version
Authors: Jetté Sylvie  , Tanguay Andréanne  , Talbot Lise R.  , Westover Stéphany  , Pavel Roxana  , Perreault Élaine  , Mercier Geneviève
Published: February 2025

The mission of the ICNP Francophone Research and Development Centre of Canada is to promote and support the use of the French ICNP® by French-speaking nursing students, health-care workers and health organizations. This paper presents the different steps performed to achieve validation of the ICNP's French-Canadian version, which is now available for its integration into the electronic health-care records.
Advancing Nursing Informatics in the Next Decade: Recommendations from an International Survey
Authors: Topaz Maxim  , Ronquillo Charlene  , Peltonen Laura-Maria  , Pruinelli Lisiane  , Sarmiento Raymond Francis  , Badger Martha K.  , Ali Samira  , Lewis Adrienne  , Georgsson Mattias  , Jeon Eunjoo  , Tayaben Jude L.  , Kuo Chiu-Hsiang  , Islam Tasneem  , Sommer Janine  , Jung Hyunggu  , Eler Gabrielle Jacklin  , Alhuwail Dari
Published: February 2025

In the summer of 2015, the International Medical Informatics Association Nursing Informatics Special Interest Group (IMIA NISIG) Student Working Group developed and distributed an international survey of current and future trends in nursing informatics. The survey was developed based on current literature on nursing informatics trends and translated into six languages. Respondents were from 31 different countries in Asia, Africa, North and Central America, South America, Europe, and Australia. This paper presents the results of responses to the survey question: “What should be done (at a country or organizational level) to advance nursing informatics in the next 5–10 years?” (n responders = 272). Using thematic qualitative analysis, responses were grouped into five key themes: 1) Education and training; 2) Research; 3) Practice; 4) Visibility; and 5) Collaboration and integration. We also provide actionable recommendations for advancing nursing informatics in the next decade.
Health@Home Moves All About the House!
Authors: Casper Gail R.  , Brennan Patricia F.  , Arnott Smith Catherine  , Werner Nicole E.  , He Yuqi
Published: February 2025

It is now well recognized that patients play an important and active role in self-care and disease management, and many of these activities happen in their homes. Information technologies to support such care might be better used if they were designed taking into account the physical context of the home and the health information management needs of the residents. We conducted home-based interviews of 20 adults including an extensive analysis of their personal health information management (PHIM) tasks. Here we present these task descriptions, locations of their performance, and distribution across space and time. Implications for the informatics community include accommodating the distributed nature of tasks in the design of consumer technologies.
Project Management: Essential Skill of Nurse Informaticists
Authors: Sipes Carolyn
Published: February 2025

With the evolution of nursing informatics (NI), the list of skills has advanced from the original definition that included 21 competencies to 168 basic competencies identified in the TIGER-based Assessment of Nursing Informatics Competencies (TANIC) and 178 advanced skills in the Nursing Informatics Competency Assessment (NICA) L3/L4 developed by Chamberlain College of Nursing, Nursing Informatics Research Team (NIRT). Of these competencies, project management is one of the most important essentials identified since it impacts all areas of NI skills and provides an organizing framework for processes and projects including skills such as design, planning, implementation, follow-up and evaluation. Examples of job roles that specifically require project management skills as an essential part of the NI functions include management, administration, leadership, faculty, graduate level master's and doctorate practicum courses. But first, better understanding of the NI essential skills is vital before adequate education and training programs can be developed.
Knowledge Transfer in Health Care Through Digitally Collecting Learning Experiences – Results of Witra Care
Authors: Behrends Marianne  , Kupka Thomas  , Schmeer Regina  , Meyenburg-Altwarg Iris  , Marschollek Michael
Published: February 2025

Introduction: The goal of the project Witra Care was to investigate how far the use of mobile technology is suitable to collect experience-based knowledge of nurses.
Changing Educational Paths in an Informatics Course According to the Needs and Expectations of Nursing Degree Students
Authors: González Zulma A.  , Schachner María B.  , Tattone María A.  , Benítez Sonia E.
Published: February 2025

Informatics education in the nursing career varies in each curriculum, and directly impact in training and future development of nurses in the professional field. While the proposed curriculum is based on essential minimum content for professional training, it was necessary to update it according to current technological development, considering the different profiles of students and practice settings, labor and academia. The pedagogical proposals were redesigned in two informatics courses of a Bachelor of Science in Nursing (BSN) at Hospital Italiano de Buenos Aires. We adapted the curricula tailored on prior knowledge, educational path and needs of the students identified and made explicit by them at the beginning of the courses. At the end of the courses, the students surveyed said that the changes were appropriate.
Low-Cost Wearable for Fatigue and Back-Stress Measurement in Nursing
Authors: Baquapuri Halim I.  , Wajdan Ali  , Kutafina Ekaterina  , Misgeld Berno  , Jonas Stephan M.
Published: February 2025

In recent years the need for informal home care in European countries is growing quickly due to increased life expectancy and demographic change. Informal caregivers have to overcome many obstacles ranging from a lack of adequate training to misjudging their physical and psychological abilities. The aim of this project is to create a low cost wearable device, which unobtrusively measures the physical stress load on caregivers. Two parameters with the most impact on performance and well-being of the caregiver have been identified: (i) fatigue and (ii) back-stress. Based on the measurements, an alert is issued if caregivers are not performing a task correctly, or if they are overexerting themselves. This paper discusses the design of such device and description of an initial prototype, its advantages and possible further development and applications.
A Workflow Framework for Health Management in Daily Living Settings
Authors: Ozkaynak Mustafa  , Jones Jacqueline  , Weiss Jason  , Klem Patrick  , Reeder Blaine
Published: February 2025

Daily-living settings are increasingly becoming care delivery settings, particularly for chronic conditions. Workflow studies can help understand care delivery in daily-living settings, but traditional frameworks originally developed for institutional settings may not be appropriate to study health management in daily-living settings. Based on a qualitative study of health management patterns among eight patients at an academic hospital anticoagulation clinic, we have developed a model for examining daily living setting-based workflow. This model can inform consumer informatics interventions.
Developing a Semantic Model to Describe Physical Activity Data
Authors: Kim Hyeoneui  , Kim Jihoon  , Shenvi Edna  , Quach Jimmy  , Sutjiadi Brian  , Richardson Alex  , Lin Ko-Wei
Published: February 2025

The importance of data in the social and behavioral domains to biomedical research is increasing, but ensuring the reusability of such data through standardization is not a trivial task. To start addressing this challenge, we developed a semantic model of the physical activity domain by reviewing 302 physical activity questions collected from standardized questionnaires and public data repositories. Our semantic model is comprised of activity keywords, qualifiers, response measures and context. We identified three types of contexts: active lifestyle, physical capacity, and environment. The majority (94%) of the 204 activity keywords extracted from the 302 questions were mapped to the UMLS Metathesaurus. Preliminary evaluation of our model with 309 additional activity questions showed that the majority of the questions were related to one of the three context categories. We also noted the need to expand context categories to incorporate the questions assessing psychological aspects of dealing with physical activities.
Event Reports Promoting Root Cause Analysis
Authors: Pandit Swananda  , Gong Yang
Published: February 2025

Improving health is the sole objective of medical care. Unfortunately, mishaps or patient safety events happen during the care. If the safety events were collected effectively, they would help identify patterns, underlying causes, and ultimately generate proactive and remedial solutions for prevention of recurrence. Based on the AHRQ Common Formats, we examine the quality of patient safety incident reports and describe the initial data requirement that can support and accelerate effective root cause analysis. The ultimate goal is to develop a knowledge base of patient safety events and their common solutions which can be readily available for sharing and learning.
Rationale for Quantification in Nursing Services Using the International Council of Nurses Nurse-Patient Summary
Authors: Halloran Edward J.  , Welton John  , Bastin H. Lee  , Onori Kennedy
Published: February 2025

This review provides evidence that new data from nurses meets criteria that explains variation in hospital charges, length of hospital stay and end results of hospital care compared with ICD data; that nurses' data can be used to evaluate assignments of nurses to patients; that new data properly distinguishes patients' human needs within ICD categories. These new data are derived from the professional literature indexed and synthesized by Henderson. It is proposed to adopt the ICN-NPSum to standardize quantification in nursing services.