Miracle-dz/UniFAR-FTUs huggingface dataset:
Homogenisation Metamodelling of Perforated Plates

Abstract: The use of finite element (FE)‐based homogenisation has improved the study of composite material properties. However, it involves enormous computational effort when implemented in engineering design problems. Therefore an artificial neural network (ANN) surrogate model is proposed here to avoid this issue. In this study, a numerical homogenisation code was developed based on a commercial FE package. It is used to develop the ANN metamodel for an individual composite structure. The effectiveness of the metamodel was examined through an analytical optimisation procedure.
Capacitance–voltage characterization of fully silicided gated MOS capacitor

This paper investigates the capacitance–voltage (C–V) measurement on fully silicided (FUSI) gated metal-oxide-semiconductor (MOS) capacitors and the applicability of MOS capacitor models. When the oxide leakage current of an MOS capacitor is large, two-element parallel or series model cannot be used to obtain its real C–V characteristic. A three-element model simultaneously consisting of parallel conductance and series resistance or a four-element model with further consideration of a series inductance should be used. We employed the three-element and the four-element models with the help of two-frequency technique to measure the Ni FUSI gated MOS capacitors. The results indicate that the capacitance of the MOS capacitors extracted by the three-element model still shows some frequency dispersion, while that extracted by the four-element model is close to the real capacitance, showing little frequency dispersion. The obtained capacitance can be used to calculate the dielectric thickness with quantum effect correction by NCSU C–V program. We also investigated the influence of MOS capacitor's area on the measurement accuracy. The results indicate that the decrease of capacitor area can reduce the dissipation factor and improve the measurement accuracy. As a result, the frequency dispersion of the measured capacitance is significantly reduced, and real C–V characteristic can be obtained directly by the series model. In addition, this paper investigates the quasi-static C–V measurement and the photonic high-frequency C–V measurement on Ni FUSI metal gated MOS capacitor with a thin leaky oxide. The results indicate that the large tunneling current through the gate oxide significantly perturbs the accurate measurement of the displacement current, which is essential for the quasi-static C–V measurement. On the other hand, the photonic high-frequency C–V measurement can bypass the leakage problem, and get reliable low-frequency C–V characteristic, which can be used to evaluate whether the full silicidation has completed or not, and to extract the interface trap density of the SiO2/Si interface.
Novel compact ultra‐wideband filter with wide stop‐band

One novel compact ultra‐wideband filter having high‐frequency selectivity and wide stopband is developed by using microstrip stub‐loaded dual‐mode resonator couples. Open stub‐loaded and short stub‐loaded are used to widen the passband of filter without aperture‐enhanced coupled line structure. Five transmission poles in the passband are shown. Two sharp attenuation poles can be located close to either side of the desired pass band. And the other two attenuation poles can be located in the stopband of upper frequencies, so as to reject the third resonant modes of stub‐loaded resonators. The passband of filter and the locations of attenuation poles can be controlled by the sizes of the open stub and short stub. The measured results demonstrate that the insertion loss is lower than 1.0 dB in the passband (3.9–11.6 GHz), higher than 15.0 dB in the upper‐stopband (12.0–19.5 GHz), whereas the group delay variation in the passband is less than 0.5 ns. The measured result agrees well with the EM simulation. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 53–55, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24014
Toward Efficient Calibration of Higher‐Resolution Earth System Models

Projections of future climate change to support decision‐making require Earth system models (ESMs) running at high spatial resolution, but at present this is computationally prohibitive. A major challenge is the calibration (parameter tuning) during the development of ESMs, which requires running large numbers of simulations to identify optimal values for parameters that are poorly constrained by observations. Here, we train a convolutional neural network (CNN) to emulate perturbed parameter ensembles from two lower‐resolution (and thus much less expensive) versions of the same ESM, and a smaller number of higher‐resolution simulations. Cross‐validated results show that the CNN's skill exceeds that of a climatological baseline for most variables with as few as 5–10 examples of the higher‐resolution ESM, and for all variables (including precipitation) with at least 20 examples. This proof‐of‐concept study demonstrates a machine learning based approach that makes the process of constructing a higher‐resolution emulator 20%–40% more computationally efficient, and thus offers the prospect of significantly more efficient calibration of ESMs.
How and When job Security Reduces Resistance to Change in the Context of Organizational Change

Drawing on conservation of resources theory, this study highlights why and when job security may decrease resistance to change during the organizational change process. Data were collected from 23 subsidiaries in a large manufacturing group enterprise based in a coastal city in eastern China. A three-wave design was used to mirror the different stages in the change process, valid data were received from 469 employees and 86 supervisors. Results showed that job security was negatively related to resistance to change, and this effect was mediated through affective commitment to change. We also found that procedural justice plays a moderating role in the relationship between job security and affective commitment to change and that environmental uncertainty also moderates the relationship between affective commitment to change and resistance to change. This study is quite timely and would have the potential to benefit the practice of change management in organizations.
Development of a muscle suit for the upper body—realization of abduction motion

A 'muscle suit' that will provide muscular support for the paralyzed or those otherwise unable to move unaided is being developed. The muscle suit is a garment without a metal frame that uses McKibben actuators driven by compressed air to produce motion. Because the actuators are sewn into the garment, no metal frame is needed, making the muscle suit very light and cheap. These features are completely different from conventional methods for supporting humans. In this paper, the basic concept and advantages of the muscle suit are first described. In order to verify the feasibility of the basic concept, a prototype system is mounted on a life-size doll. This allows for the limitations of the original design to be identified. Next, an armor-type muscle suit is proposed in order to overcome some of the prototype's limitations. A full-range abduction motion, which is determined to be the most difficult upper body motion, is realized through geometric analysis and experimentation. In the future, the remaining arm motions will be investigated and implemented.
High modulation efficiency and high power 1060 nm tapered lasers with separate contacts

A high direct optical modulation amplitude of more than 1.6 W, modulation efficiencies of 20 W/A at 700 Mbit/s and 50 W/A for quasi-static modulation, and a very high optical extinction ratio of 19 dB have been demonstrated in custom-designed gain guided tapered lasers emitting at 1060 nm. The devices were fabricated with split contacts, allowing the separate injection of the ridge waveguide and tapered sections. The modulation of a large output power with low modulating current was achieved by modulating the current injected into the ridge waveguide section of the device.
Temperature dependent leakage currents in polycrystalline silicon thin film transistors

We have studied the origins of the leakage current in polycrystalline silicon (poly-Si) thin film transistors. Temperature dependent transfer characteristics were measured as a function of drain voltage. Three kinds of leakage current were introduced to explain the experimental results. The leakage current may arise from the generation current at very low drain voltage, and may result in the same activation energy between leakage current and conductivity of undoped poly-Si. The leakage current may be due to the thermionic field emission via grain boundary defects in the intermediate drain voltage region. At high drain voltage and high negative gate voltage, the leakage current may result from the field enhanced tunneling of electrons in the valence band to the conduction band via grain boundary traps.
THEME 7: OCCUPATIONAL HEALTH & SAFETY Full Refereed Paper (Key Note Speech: 159) USING SAFETY CULTURE TO OVERCOME MARKET FORCE INFLUENCE ON CONSTRUCTION SITE SAFETY

The Australian Construction Industry’s safety performance is less than optimal (Cole Royal Commission, 2003). A common perception within the industry is that the current level of safety performance reflects the heavy production demands placed on organisations and their workforce. As a consequence, real improvements in safety cannot be easily made because it is very difficult to modify contractually determined completion times required of the industry. It is argued that safety can be improved within this demanding context by improving the level of safety understanding of those people who hold safety critical positions and roles. Preliminary results of focus groups conducted revealed that: the behaviour and actions of 11 key roles were seen as the most critical to driving a safety culture; as well as general, anecdotal support for the argument that improving safety skilling and understanding within these key positions could minimise the influence of market factors. Based on these findings, a survey was undertaken to identify the tasks that people in these roles think are important to reducing injury and incidents on site. Using this data, a framework is presented that articulates the tasks those safety critical role holders must be competent to complete in order to develop and maintain a positive site safety culture.
Surgery for Cutaneous Squamous Cell Carcinoma and its Limits in Advanced Disease

Surgery remains the first-line therapeutic option for most patients with cutaneous squamous cell carcinoma (cSCC). However, in the current therapeutic landscape, surgery must attempt to the complete tumor resection (R0 resection) with the lowest risk of surgical complications. This double aim is usually accomplished through standard excision with clinical margins in patients with low-risk tumors or by some of the micrographically controlled surgery procedures for patients with tumors at high-risk of local recurrence and metastasis. Surgery is also a first-line treatment for nodal metastases of cSCC as well as an option to consider in patients who develop recurrences while receiving immunotherapy, or as a palliation procedure in patients with advanced tumors. Neoadjuvant immunotherapy, that is the use of a medical treatment before surgery, is under investigation in patients with cSCC. The decision-making process and guidelines recommendations regarding cSCC surgery are reviewed in this manuscript.
Immunohistochemical Analysis of Alveolar Bone Preserved with Autologous Teeth Graft. Osteopontin Expression and its Regulatory Functions in Preserved Alveolar Ridge

˚ ABSTRACT: The present study investigated the healing response of 12 fresh post-extraction alveolous grafted with particulate autologous teeth to achieve preservation of the post-extraction alveolar ridge. The objective is to elucidate the osteoconductive and osteoinductive properties of the autologous dental graft used as a bone substitute in the alveolar ridge preservation technique. Five patients were included, with at least one hopeless tooth and in need of extraction and preservation of the ridge, to receive in the same place a dental implant in prosthetic replacement. In the first surgical stage, dental extractions and preservation of the alveolar ridge were performed, using the teeth extracted and processed with an automatic system as bone substitutes. In the second surgical stage, an incisional bone biopsy was performed in each grafted site, the bone beds were recapitulated in a drilling protocol that allowed the placement of the dental implant, and the harvested bone specimens were prepared for analysis. The histological results of the bone biopsies in all cases showed remnant particles of the dental graft, made up of dentin, partially resorbed, with irregular superficial edges and in close contact with newly formed bone in transition to mature lamellar bone, in which well differentiated osteocytes were observed. The immunohistochemical results showed a moderate positive expression of osteopontin at the edges of the integrated teeth particles, inside the peritubular dentin space and at the osteodental contact interfaces. In conclusion, the evidence from the study shows that the autologous dental graft is a biocompatible bone substitute, that provides an osteoconductive scaffold that promotes bone cell adhesion and migration for local osteogenesis and that it is associated with moderate in situ expression of osteopontin, which showed a high affinity with mineralized dental tissue, suggesting osteoinductive properties in situ.
Relationship for slots width, antenna directivity, and the 3dB HPBW of an RLSA antenna at 12.4GHz using regression analysis

The quest to optimize performance of the radial line slots array (RLSA) antenna continued to unfold. Attempt is made at studying slots width variation in radial line slot array antenna (RLSA) and its effect on the 3dB half power beam width (3dB HPBW) in this submission. It is aimed at formulating a polynomial equation that best describes the relationship between them. The polynomial equation in turn relates to the directivity of the RLSA antenna. The minimum number of slots in the first ring were restricted to (n1) =12 and, (n1) =14, this is used to manipulate slots concentration on the radiating surface. The restriction is owed to the fact that much cluster of slots in the first ring resulted to a deteriorating performance in terms of directivity values recorded from CST 2012 simulations, for the 12.4 GHz regression analysis in this study. Results obtained from the polynomial equation formed were compared with measured and simulated directivity values and showed good agreement.
State recognition of the viscoelastic sandwich structure based on the adaptive redundant second generation wavelet packet transform, permutation entropy and the wavelet support vector machine

The viscoelastic sandwich structure is widely used in mechanical equipment, yet the structure always suffers from damage during long-term service. Therefore, state recognition of the viscoelastic sandwich structure is very necessary for monitoring structural health states and keeping the equipment running with high reliability. Through the analysis of vibration response signals, this paper presents a novel method for this task based on the adaptive redundant second generation wavelet packet transform (ARSGWPT), permutation entropy (PE) and the wavelet support vector machine (WSVM). In order to tackle the non-linearity existing in the structure vibration response, the PE is introduced to reveal the state changes of the structure. In the case of complex non-stationary vibration response signals, in order to obtain more effective information regarding the structural health states, the ARSGWPT, which can adaptively match the characteristics of a given signal, is proposed to process the vibration response signals, and then multiple PE features are extracted from the resultant wavelet packet coefficients. The WSVM, which can benefit from the conventional SVM as well as wavelet theory, is applied to classify the various structural states automatically. In this study, to achieve accurate and automated state recognition, the ARSGWPT, PE and WSVM are combined for signal processing, feature extraction and state classification, respectively. To demonstrate the effectiveness of the proposed method, a typical viscoelastic sandwich structure is designed, and the different degrees of preload on the structure are used to characterize the various looseness states. The test results show that the proposed method can reliably recognize the different looseness states of the viscoelastic sandwich structure, and the WSVM can achieve a better classification performance than the conventional SVM. Moreover, the superiority of the proposed ARSGWPT in processing the complex vibration response signals and the powerful ability of the PE in revealing the structural state changes are also demonstrated by the test results.
Um modelo de detecção de intrusão baseado em deep autoencoders e transfer learning

As técnicas de aprendizado de máquina para detecção de intrusão baseada na rede geralmente pressupõem que o tráfego da rede não muda com o tempo ou que as atualizações do modelo podem ser realizadas facilmente. Neste artigo, propomos um novo modelo de detecção de intrusão baseado em deep autoencoders e transfer learning para facilitar a atualização do modelo. Experimentos realizados mostraram que as abordagens na literatura são incapazes de lidar com mudanças de tráfego de rede ao longo do tempo. A abordagem proposta é capaz de melhorar a taxa de falso positivo em até 23,9%, e fornecer taxas de precisão semelhantes às técnicas tradicionais, exigindo apenas 22% de dados de treinamento e 28% dos custos computacionais.
Slow scanning electromagnetic MEMS scanner for laser display

A small size, low power consuming, shock proven optical scanner with capacitive comb type rotational sensor for the application of mobile projection display was designed, fabricated, and characterized. To get a 2-dimensional video image, the present device horizontally scans a vertical line image made through a line-type diffractive spatial optical modulator. In order to minimize device size as well as power consumption, the mirror surface was placed on the opposite side of the coil actuator. To prevent thermal deformation of the mirror, the mirror was partially connected to the center point of the coil actuator. For shock proof, mechanical stoppers were constructed in the device. The scanner was fabricated from two silicon wafers and one glass wafer using a bulk micromachining technology. The packaged scanner consists of the scanner chip, a pair of magnets, yoke rim, and base plate. The fabricated package size is 9.2mmx10mmx3mm (0.28cc) and the mirror size is 3mmx1.5mm. The scanner chip has no damage under the shock test with impact of 2,000G in 1ms. In case of full optical scan angle of 30° at 120Hz driving frequency, linearity and power consumption are measured 98% and 60mW, respectively, which are suitable for mobile display applications.
Low-voltage bending actuators from carbide-derived carbon improved with gold foil

We report carbide-derived carbon (CDC) based polymeric actuators for the low-voltage applications. The CDC-based actuators have been designed and fabricated in combination with gold foil. The gold-foil-modified actuators exhibited high frequency response and required remarkably low operating voltage (as low as ±0.25 V). Hot-pressed additional gold layer (thickness 100 nm) ensures better conductivity of polymer supported CDC electrodes, while maintaining the elasticity of actuator. Energy consumption of gold-foil-modified (CDC/gold) actuators increased only at higher frequency values (f > 1 Hz), which is in good correlation with enhanced conductivity and improved charge delivery capabilities. Electrochemical measurements of both actuators performed at small operating frequency values (f < 0.01 Hz) confirmed that there was no difference in consumed charge between conventional CDC and CDC/gold actuators. Due to enhanced conductivity of CDC/gold actuators the accumulated charge increased at higher operating frequency values, while initiating larger dimensional changes. For that reason, the CDC/gold actuators exhibited same deflection rate at much lower potential applied. Electrochemical impedance measurements confirmed that relaxation time constant of gold-foil-modified actuator decreased more than one order of magnitude, thus allowing faster charge/discharge cycles. Gold-foil-modified actuators obtained the strain level of 2.2 % when rectangular voltage ±2 V was applied with frequency 0.5 Hz. The compact design and similar working principle of multi-layered actuator also provides opportunity to use actuator concurrently as energy storage device. From practical standpoint, this device concept can be easily extended to actuator-capacitor hybrid designs for generation of energy efficient actuation.
Influence of dielectric material near tunnel junction on analog/RF and linearity figure of merits in hetero dielectric (HG) TFET: A detailed study

In this work, the effect of dielectric material near the source region on analog/RF and linearity figure of merits in hetero gate TFET (HG‐TFET) are investigated through Technology Computer Aided Design device simulator. The various dielectric materials considered in this study are SiO2, Al2O3, and HfO2. The several RF/analog metrics studied in this work are transconductance (gm), output conductance (gd), gain (gm/gd), gate capacitance, cut‐off frequency, and gain frequency product. Furthermore, the various linearity parameters discussed are higher order derivative of gm (gm2 and gm3), voltage intercept points (VIP2 and VIP3), 3rd‐order input intercept power, and 3rd‐order intermodulation power for different high‐k dielectric near the source region in HG‐TFET. Results reveal that RF/analog performance is improved, whereas, the linearity characteristic is suppressed in HG‐TFET using HfO2 as the gate dielectric near the source.
Idiopathic orbital myositis in a pregnant woman

A case of a 29-year-old woman who presented at 25 weeks’ gestation with acute onset of painful diplopia and periorbital swelling is presented. Following further investigation, a diagnosis of idiopathic acute lateral rectus myositis was established. Her condition resolved following a 4-week course of oral prednisolone without recurrence. A healthy female was delivered at 40 weeks’ gestation. The presenting features, differential diagnosis, treatment and course of orbital myositis are discussed.
Designing and evaluating new ways of working: The application of some sociotechnical tools

This article describes some tools that provide practical help for organizations when planning and evaluating new forms of work organization within modern working environments. Although tools exist for this purpose, they are not widely adopted. Methods need to be accessible to organizations and more descriptive examples of their application are required. Moreover, evaluation of the impact of changes made as a consequence of using such tools is necessary, but rare. We illustrate some tools for design and evaluation within a case study in order to address some of these issues. © 2001 John Wiley & Sons, Inc.