Miracle-dz/UniFAR-FTUs huggingface dataset:
Interactive app-based services: Recovery evaluations and the mediating role of satisfaction in the relationship between customer-brand engagement and electronic word of mouth

Based on the theory of co-creation and resource-based theory, this study examines the differential impact of varying levels of customer participation in service recovery (firm, customer, and joint) on recovery satisfaction, customer-brand engagement (CBE), and electronic-word of mouth (e-WoM). Besides, using social exchange theory, this study examines the mediating role of consumers’ recovery satisfaction in the relationship between the types of service recovery and electronic word of mouth (e-WoM). The data to accomplish the research objectives was collected from 495 customers of interactive food delivery apps in India. The experimental design was used to collect the data. The multivariate analysis of variance (MANOVA) and PROCESS macro techniques were used to test the hypotheses. The findings suggest that joint recovery results in better recovery evaluations such as CBE, recovery satisfaction, and e-WoM. Also, recovery satisfaction mediated the relationship between CBE and e-WoM. These findings provide empirical evidence for the linkages among the theory of co-creation, resource-based theory, and social exchange theory. The marketers of interactive food delivery apps may use these findings to ascertain which recovery type they should emphasize to improve recovery satisfaction. Moreover, they are encouraged to take steps for improving recovery satisfaction as CBE affects e-WoM through recovery satisfaction.
Analytical models versus experimental results for composites containing nanoclay as secondary reinforcement under high velocity impact

This study compares some analytical models on high velocity impact behaviour of composite materials with that of experimental results from high velocity impact of hemispherical nose projectiles on nanoclay-filled composite plates in particular, assessing current models to account for the presence of nanoclay in polymer composites under such loading. Nanocomposites were prepared in 0, 1.5 and 3 wt%. The nanoclay-filled polyester resin was then utilised to manufacture laminated composite panels in four, eight and 12 layers using 400 g/m2 glass fibre woven roving via hand lay-up method. Transmission electron microscopy and X-ray diffraction confirmed intercalation and exfoliation of the nanoclay in the polyester resin system. Five models were selected for assessment. Comparison of predicted ballistic limit velocity (velocity at which the projectile remains in the composite target) with that of experimental results showed close correlation in all thickness for models that incorporated projectile nose geometry. A simple empirical equation is derived as a function of polymer laminate thickness and flexural modulus of polymer nanocomposite laminates, which varies with nanoclay content in polymer composite laminates for predicting ballistic limit velocity.
Cultural issues in implementing changes to new product development process in a small to medium sized enterprise (SME)

Being aware of best practices in new product development is one matter, implementing these approaches in a well-established company or department to reduce time to market is a different issue. Unless the whole company accepts new methods of working, there is a possibility that improvements will not be achieved. This paper draws on a case study of asmall to medium sized electronic component manufacturer. The philosophy of concurrent engineering was introduced, through new product development procedures, with the aim of improving product development efficiency and reducing time to market. This paper focuses on the difficulties encountered when the implementation of new product development processes come up against habits and attitudes that have developed over many years, and the extent to which the cultural characteristics of a company influence the overall change process.
DISCUSSION. THE BAR SIMULATION METHOD FOR THE CALCULATION OF SHEAR LAG IN MULTI-CELL AND CONTINUOUS BOX GIRDERS.

The paper describes the development of the bar simulation method for the prediction of the shear lag effect in box girders of different cross-sectional types and in continuous box girders. The accuracy of the proposed method is established by comparing the predicted values with results obtained by a finite element solution. Values obtained from the box girder design rules are also included in the comparison and these design values are seen to be generally satisfactory for the girders considered. /Author/TRRL/
Fabric Loss during Spreading: A Comparative Study of the Actual Loss in Manufacturing Men's Shirts

A theoretical model has been developed for describing the spreading process in a cutting room. Verification work for this model is described in this study, the aim of which was to determine whether the model could accurately calculate the total spreading losses in a real situation. The results presented in this paper address the difference in total fabric loss during spreading that was obtained between actual performance and theoretical calculation. Through a further investigation, the difference is highly negatively correlated with the number of completed plies lying on the cutting table, and there is no treatment of the number of turns in the theoretical model when V 0 is equal to zero. Ultimately, the equation for calculating the total fabric loss by the theoretical model is refined to improve its precision. The result of this refinement is better than the original theoretical performance.
An optically controlled continuous phase‐shifter and magnitude controller on high‐resistive silicon

The optically controlled phase and magnitude of a coplanar transmitted wave have been investigated, taking advantage of the benefit of silicon photo‐absorption at 843 nm. A phase‐shift of 45° has been achieved at 12 GHz while the magnitude remains constant. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 38: 129–132, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10993
Evaluation of manufacturing assembly process impact on long term reliability of a high performance ASIC using flip chip hyperBGA pacuage

Long tenn rcliability assessment has been perfoniied on a high perfonnance ASIC using a flip chip HyperBGAB package. considering structural details and incthods of attaching an extcmal heat sink to the package. Various heat sink onachmiicnt inethods are discussed. For an adhesive attachment, tlie selcction of an adhesive that meets reliability and manufacturing goals is discussed. The impact of vaious heat sink anaclunents and anachmentlrework proccsses on the long term package structural integrity and solder ball intcreonnect reliability were investigated by experiments and by finite element analysis (FEA). A test veluclc. containing -12.51~1 squared HyperBGA packages with 1-1.7nun. rlJ.7inm die mounted on a 0.110" 12-layer PCB. was used for assembly process development and accelented life testing. The% test packages contained daisy cbains with a wide nnge of ball. via and trace coverage from flip chip bumps through each layer of the laminate to the BGA balls. The test inatrix contained BGA packages that went thought only primary reflow. packages that were processed through heat sink attachment only once: and packages that were processed hvice (module and heat sink rework). The test inatrises also included lieat sink attachment using two thermally conductive adhesives. Mechanical shock and accelerated life testing using standard air to air thermal cycling (up to 3500 cycles beh1,een 0-IOOT) were performed on both sets of test \ducks with in-situ resistance monitoring. The test results wrc then used to asscs long term reliability for targeted product applications.
Two-Dimensional Time-Domain Antenna Arrays for Optimum Steerable Energy Pattern with Low Side Lobes

This document presents the synthesis of different two-dimensional time-domain antenna arrays for steerable energy patterns with side lobe levels. The research is focused on the uniform and nonuniform distributions of true-time exciting delays and positions of antenna elements. The uniform square array, random array, uniform concentric ring array, and rotated nonuniform concentric ring array geometries are particularly studied. These geometries are synthesized by using the well-known sequential quadratic programming. The synthesis regards the optimal true-time exciting delays and optimal positions of pulsed antenna elements. The results show the capabilities of the different antenna arrays to steer the beam in their energy pattern in time domain and how their performance is in frequency domain after the synthesis in time domain.
Insulin-Like Growth Factor 2 (IGF2) and Autophagy Gene Expression Alteration in Parkinson’s Disease: Potential Predictor Markers.

Insulin-like growth factor 2 (IGF2) and autophagy-related genes have been proposed as interesting biomolecules related to idiopathic Parkinson’s disease (PD). The objective of this study was to determine the IGF2 and IGF1 levels in plasma and peripheral blood mononuclear cells (PBMCs) from patients with moderately advanced PD and explore the potential correlation with autophagy-related genes in the same blood samples. IGF1 and IGF2 levels in patients' plasma were measured by ELISA, and the IGF2 expression levels were determined by real-time PCR and Western blot in PBMCs. The expression of autophagy-related genes was evaluated by real-time PCR. The results show a significant decrease in IGF2 plasma levels in PD patients compared with a healthy control group. We also report a dramatic decrease in IGF2 mRNA and protein levels in PBMCs from PD patients. In addition, we observed a downregulation of key components of the initial stages of the autophagy process. Although IGF2 levels were not directly correlated with disease severity, we found a correlation between its levels and autophagy genes expression from the same samples, in a sex-dependent manner. To further explore this correlation, we treated mice macrophages cell culture with α-synuclein and IGF2. While α-synuclein treatment decreased levels of Beclin1 and Atg5, IGF2 treatment reverted these effects. Our results suggest a relationship between IGF2 levels and the autophagy process in PD and its potential application as a multi-biomarkers to determine the PD patients' stages of the disease.
Integration of a self-oscillating mixer and an active antenna

Current trends in commercial communication system developments have called for small-size and low-cost radio frequency (RF)/microwave circuits. One of the solutions is to design a circuit element such that it possesses multiple functionality. In other words, different parts of a circuit are integrated into a single element, and consequently fewer elements are required. In this work, a C-band self-oscillating mixer (SOM) integrated with an active antenna is presented. A dual-gate field-effect transistor (FET) is employed to facilitate the integration. The resultant unit was tested and experimental results are shown to demonstrate the feasibility of the design.
Kalman Filtering for Seam Tracking in Master-Slave Robot Remote Welding System

Welding seam tracking precision is a key factor influencing welding quality for master-slave robot remote welding system. However, it does not satisfy the welding requirement due to significant noises. To eliminate the influence of noises upon the seam tracking precision and improve the seam tracking precision, a master-slave robot remote welding system was built and Kalman filtering (KF) was applied to the seam tracking process. The experimental results show that the KF eliminated the influence of noises upon the seam tracking precision and improved the seam tracking precision.
On the definition of the cutoff frequency f T

The commonly used definition of cutoff frequency f T of bipola transistors is predicated on the existence of a frequency domain in which the magnitude of the current gain β varies inversely with frequency. In the absence of such a domain, the definition is vague. The definition 1/f T = d/df[lm (1/β)] for f →0 is proposed.
Benchmarking the rescue departments of the Austrian Red Cross using data envelopment analysis and fractional regression models

We performed a radial, input-oriented variable returns-to-scale data envelopment analysis to benchmark 52 rescue departments of the Austrian Red Cross from a single province. Three inputs (working hours of employed personnel/non-employed personnel and number of vehicles) and two output variables (duration-weighted number of two service transportation categories) were selected. First, we assessed the service production process of the Red Cross to obtain an insight into the level of performance, and performance differences among the rescue departments. We found that the average technical efficiency of the rescue departments amounted to almost 88%. The theoretically derived potentials of input reductions for inefficient rescue departments were, among others, restricted by several settings, which were analysed in the second step. Here, several socio-economic, environmental and institutional factors were investigated using a second stage regression analysis based on fractional regression models to find out whether they impacted on the performance of the rescue departments. We found a negative relationship between wintry weather conditions, measured as the number of ice days, and performance, while we identified a positive impact of the number of people aged 64+ and the number of hospital beds in the catchment area on Red Cross performance.
Efficient control of reluctance synchronous machines

This paper shows that maximum efficiency control (ME) in reluctance synchronous machines (RSM) belongs to the class of constant angle control strategies. It is also shown that for all constant angle control strategies, efficiency is constant and independent of torque (current), being only a function of speed. Results are explored by simulation comparing ME to other typical control strategies from the efficiency viewpoint. Data from a standard RSM and an ALA-RSM (axially laminated anisotropic RSM) are used. Machine limits are taken into account. The paper presents the analytical solution in dq-currents for optimum efficiency, based on a per unit (pu) loss-model. A practical ME expression within a vector control scheme is also presented.
A Compact and High-Performance Hardware Architecture for CRYSTALS-Dilithium

The lattice-based CRYSTALS-Dilithium scheme is one of the three thirdround digital signature finalists in the National Institute of Standards and Technology Post-Quantum Cryptography Standardization Process. Due to the complex calculations and highly individualized functions in Dilithium, its hardware implementations face the problems of large area requirements and low efficiency. This paper proposes several optimization methods to achieve a compact and high-performance hardware architecture for round 3 Dilithium. Specifically, a segmented pipelined processing method is proposed to reduce both the storage requirements and the processing time. Moreover, several optimized modules are designed to improve the efficiency of the proposed architecture, including a pipelined number theoretic transform module, a SampleInBall module, a Decompose module, and three modular reduction modules. Compared with state-of-the-art designs for Dilithium on similar platforms, our implementation requires 1.4×/1.4×/3.0×/4.5× fewer LUTs/FFs/BRAMs/DSPs, respectively, and 4.4×/1.7×/1.4× less time for key generation, signature generation, and signature verification, respectively, for NIST security level 5.
Towards real-time recognition of driver intentions

Knowledge of an automobile driver's intended actions (e.g., to turn, change lanes, etc.) could facilitate the integration of intelligent vehicle systems with the driver. The actions can be inferred from the driver's control actions as he/she prepares to execute an action. Actions are modeled as a sequence of internal mental states, each with a characteristic pattern of driver control behavior. By observing the temporal pattern of the drivers' control behavior and comparing it to the action models, we can determine which actions the driver are beginning to execute.
Compact circular polarized patch antenna with harmonic rejection

Design of circularly polarized antenna using circular patch with single feed is proposed. The circular polarization (CP) property with second harmonic rejection can be achieved by embedding two circular slots in the patch resonator. By changing the size and position of the slots, two orthogonal modes with equal amplitude and 90° out of phase are simultaneously excited. In the meanwhile, the embedded slots blocking the second harmonic signal is especially suitable for the circuits with nonlinear elements, such as rectify antenna (rectenna). Furthermore, the patch is simple and compact with 12% of the antenna area reduction. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 45–48, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23009
Air-to-Air and Air-to-Ground Engagement Modeling for the KAI Embedded Training System

The Embedded Training System (ETS) of Korea Aerospace Industries, Ltd. (KAI) is developed by the Korea Aerospace Industries, Ltd. and contains several functions of simulation for the air-to-air and air-to-ground combat training. The key section of these simulation functions is the modeling of air-to-air, air-to-ground weapons and targets. The virtual air-to-ground weapons in KAI ETS include a bomb, air-to-ground gunnery, rocket, and air-to-ground Electro-Optical missile. The virtual air-to-air weapons include Within Visual Range (WVR) short range missile, Beyond Visual Range (BVR) medium range missile, and air-to-air gunnery. The virtual targets in KAI ETS are air-to-air maneuvering targets and air-to-ground fixed targets on the surface. For each release of air-to-ground weapon, the attack effectiveness can be measured by the quantitative value such as missdistance from bulls-eye. For each release of air-to-air weapon, the attack effectiveness can be presented by the qualitative value such as hit/miss criteria. In this research, the target behavior for various tactical conditions will be simulated, and for those situations the training procedure using KAI ETS will be set up. The test results of flyable OFP with System Integration Laboratory (SIL) are presented. The evaluation by test pilots and the syllabus coverage of a fighter pilot training using KAI ETS are presented with the proposed engagement modeling of KAI embedded training system.
Neuromuscular Electrical Stimulation to Immobilized Lower Extremities Directly Following Orthopaedic Surgery in Three Children with Cerebral Palsy: A Case Series

Cerebral palsy (CP) is a non-progressive, neurological disorder often resulting in secondary musculoskeletal impairments affecting alignment and function which can result in orthopaedic surgery. Neuromuscular electrical stimulation (NMES) is a modality that can be used for rehabilitation; however, NMES immediately following orthopaedic surgery in children with CP using surface electrodes has not been previously reported. The purpose of this case series is to describe the novel use of NMES in the acute rehabilitation phase directly after orthopaedic surgery. This case series included three children with spastic diplegia CP, Gross Motor Function Classification System level II who underwent Single Event Multi-Level orthopaedic Surgery. Each long leg cast contained window cast cut-outs to allow for surface electrode placement for daily NMES intervention to the quadriceps muscles while immobilized. Children were assessed pre- and post-operatively using the Functional Mobility Scale (FMS), Gross Motor Function Measure (GMFM-66), and 6-Minute Walk Test (6MWT). All children demonstrated no adverse effects using NMES intervention and had improvements in the 6MWT. Most children demonstrated gains in the FMS and GMFM-66. Use of NMES through window cast-cuts in a long leg cast is a novel practice approach for delivery of early rehabilitation following lower extremity orthopaedic surgery.
A Study about the Discrimination of Counterfeit ￦50,000 bills Using Optical Fiber Sensor

AbstractThe authenticity of bank note is threatened by increasing a counterfeit note with development of the information industry, recently. The importance of counterfeit discrimination is stressed, but there is a limits to popularization. Because usually, the existing counterfeit discriminator uses invisible ray zone like UV, IR, etc. The purpose of this paper is the construction of counterfeit discrimination system for ￦50,000 bills. This system is used optical fiber sensor with excellent confidence as well as easy way of using in wave length of a visible ray zone. The light was altered by lightening optical fiber sensor to particular part of bank notes in order displacing response of optical fiber sensor. The experiment was processed with data of 100 bank notes on manufacture optical fiber, probe, jig. As a result, the discrimination conuterfeit was verified when the experiment was processing with hologram or CSI on the bank notes with three kinds of color printer. Key Words : Counterfeit discrimination(위폐 감별), Optical Fiber Sensor(광섬유 센서), Non-Contact(비 접촉), CSI(Color shifting ink; 색변환 잉크)
Vibration Analysis and Human Comfort Evaluation of Underground Hydropower House

Human comfort is of great importance to main powerhouse and vibration level should be controlled below the human comfort limit. Comparison of ISO2631/1-1985 and ISO2631/1-1997 was performed firstly in this study. It points out that weighted root-mean-square acceleration is basic variable for vibration evaluation. The reduced comfort boundary of 2 hours (0.260m/s2) in 1985 version is very close to the comfort threshold (0.315m/s2) in 1997 version. Above two values were selected as human comfort standard in this paper. After that, 3D dynamic finite element model of HongPing pumped storage station was established and vibration analysis under pressure fluctuations was conducted using time history method. The calculation results indicated that vibration of generator floor was mainly caused by the multiples of runner blade number frequency. Vibration level of generator floor would not lead to human discomfort.
Transient Stability Enhancement of a Wind Energy Distributed Generation System by Using Fuzzy Logic Stabilizers

This paper proposes a new power system stabilizer based on fuzzy systems. The new controller is applied to a wind turbine generating system comprising of a wind turbine driving a 3 - phase synchronous generator connected to a large power system. The new controller significantly improves system performance. The enhancement in the dynamic response of the system is verified through simulation results of a system under different operating points and exposed to both small and large disturbances. Extension to the wind energy distributed generation based multi-machine case is also included to illustrate the effectiveness of the proposed stabilizer in damping power system swing mode oscillations that follow disturbances.