Miracle-dz/UniFAR-FTUs huggingface dataset:
Motivating Attributes to Social Media for Knowledge Sharing Success

Social media allows easy and instant communication for knowledge to be shared. Thus, social media may contribute to the success of knowledge sharing among employees. However, identifying motivating attributes of why employees share their knowledge through social media is a matter of concern. This research provides a theoretical foundation illustrating how motivating attributes to social media can facilitate the success of knowledge sharing among employees. Panahi, Watson and Partridge’s (2012) model of potential contributors of social web tools to knowledge share was adopted in this empirical examination. Drawing on evidence from the survey, the research concludes that increasing information visibility for knowledge articulation and developing networking with colleagues were the most important motivating attributes for social media in increasing the success of employee’s knowledge sharing. This research offers recommendations in relation to mechanisms for monitoring social media activities for knowledge management initiatives. Lesson and implications for both theory and practice are discussed in the paper.
Multi-Resolution Local Probabilistic Approach for Low Resolution Face Recognition

The low resolution problem in face recognition happens in video surveillance application and degrades the recognition rate dramatically. To overcome the low resolution problem, we introduce a novel face recognition method consisting of extracting multiresolution observation vectors, learning local similarity and making final decision based on top J local probabilities. There are two key contributions. One is to extract multiresolution local characteristics, and the other one is to select the top J local similarities automatically. The benefits of our method are to create multiresolution features and to exclude insignificant local features during recognition phase so that our method could achieve high recognition rate with a low resolution face image. The experimental results show that the proposed method reveals better performance for low resolution face recognition.
Protective efficacy of standard Edmonston-Zagreb measles vaccination in infants aged 4.5 months: interim analysis of a randomised clinical trial

Objective To examine the protective efficacy of measles vaccination in infants in a low income country before 9 months of age. Design Randomised clinical trial. Participants 1333 infants aged 4.5 months: 441 in treatment group and 892 in control group. Setting Urban area in Guinea-Bissau. Intervention Measles vaccination using standard titre Edmonston-Zagreb vaccine at 4.5 months of age. Main outcome measures Vaccine efficacy against measles infection, admission to hospital for measles, and measles mortality before standard vaccination at 9 months of age. Results 28% of the children tested at 4.5 months of age had protective levels of maternal antibodies against measles at enrolment. After early vaccination against measles 92% had measles antibodies at 9 months of age. A measles outbreak offered a unique situation for testing the efficacy of early measles vaccination. During the outbreak, 96 children developed measles; 19% of unvaccinated children had measles before 9 months of age. The monthly incidence of measles among the 441 children enrolled in the treatment arm was 0.7% and among the 892 enrolled in the control arm was 3.1%. Early vaccination with the Edmonston-Zagreb measles vaccine prevented infection; vaccine efficacy for children with serologically confirmed measles and definite clinical measles was 94% (95% confidence interval 77% to 99%), for admissions to hospital for measles was 100% (46% to 100%), and for measles mortality was 100% (−42% to 100%). The number needed to treat to prevent one case of measles between ages 4.5 months and 9 months during the epidemic was 7.2 (6.8 to 9.2). The treatment group tended to have lower overall mortality (mortality rate ratio 0.18, 0.02 to 1.36) although this was not significant. Conclusions In low income countries, maternal antibody levels against measles may be low and severe outbreaks of measles can occur in infants before the recommended age of vaccination at 9 months. Outbreaks of measles may be curtailed by measles vaccination using the Edmonston-Zagreb vaccine as early as 4.5 months of age. Trial registration Clinical Trials NCT00168558 [ClinicalTrials.gov].
Pricing American options with the SABR model

We introduce a simple and flexible method to price derivative securities on assets with volatilities which are stochastic. As a special case we treat the SABR model in more detail. Our approach is based on the construction of recombining trees using interpolation methods on probability measures, and this makes it very suitable for the application of parallel computing techniques. We show how one can easily incorporate features which are characteristic for practical option pricing problems, such as a term structure of interest, early exercise possibilities and the payment of cash dividends.
Simulation Model for Construction of Civil Works for Electrical Substations

Electrical substations are considered by many construction experts as complex projects. The scope of civil works in electrical substations includes construction of several buildings/components divided into parallel and overlapped working phases that require variety of resources and are generally quite costly and consume a considerable amount of time. Therefore, construction of substations faces complicated resource scheduling problems, whereby the need to persistently discover approaches to enhance construction performance. To address the previously stated afflictions, this paper introduces a simulation model for the execution processes of civil works for typical electrical substations. The model is built on Anylogic software using discrete event simulation method and utilizes excel files for data entry. The main contributions of this model to the existent body of knowledge is to present at a macro level the scheduling and cost estimation of civil works for electrical substations while considering project variables and resource constraints. The proposed model provides the user with four main outputs with respect to the substation: i) resource loaded schedule, ii) cost estimation, iii) resources utilization breakdown and iv) amounts of materials consumed. The model is verified and validated on three different substations projects and a sensitivity analysis is conducted.
Power driven placement with layout aware supply voltage assignment for voltage island generation in dual-Vdd designs

In this paper we propose a method for standard cell placement with support for dual supply voltages, aiming to reduce total power under timing constraints and to implement voltage islands with minimal overheads. The method begins with timing and power driven coarse placement, followed by a few iterations between voltage assignment and placement refinement to generate voltage islands. Several techniques, including timing and power driven net weighting, seed growth based voltage assignment, and soft clustering strategy for placement refinements are employed in our implementation. Experimental results on a set of MCNC benchmarks show that our approach is able to produce feasible placement for dual-Vdd designs and significantly reduce total power with a wirelength increase within 14% compared to a power and timing driven placer without voltage islands
Assessing the Effect of Loop Mutations in the Folding Space of β2-Microglobulin with Molecular Dynamics Simulations

We use molecular dynamics simulations of a full atomistic Gō model to explore the impact of selected DE-loop mutations (D59P and W60C) on the folding space of protein human β2-microglobulin (Hβ2m), the causing agent of dialysis-related amyloidosis, a conformational disorder characterized by the deposition of insoluble amyloid fibrils in the osteoarticular system. Our simulations replicate the effect of mutations on the thermal stability that is observed in experiments in vitro. Furthermore, they predict the population of a partially folded state, with 60% of native internal free energy, which is akin to a molten globule. In the intermediate state, the solvent accessible surface area increases up to 40 times relative to the native state in 38% of the hydrophobic core residues, indicating that the identified species has aggregation potential. The intermediate state preserves the disulfide bond established between residue Cys25 and residue Cys80, which helps maintain the integrity of the core region, and is characterized by having two unstructured termini. The movements of the termini dominate the essential modes of the intermediate state, and exhibit the largest displacements in the D59P mutant, which is the most aggregation prone variant. PROPKA predictions of pKa suggest that the population of the intermediate state may be enhanced at acidic pH explaining the larger amyloidogenic potential observed in vitro at low pH for the WT protein and mutant forms.
Estimated mortality of adult HIV-infected patients starting treatment with combination antiretroviral therapy

Objective To provide estimates of mortality among HIV-infected patients starting combination antiretroviral therapy. Methods We report on the death rates from 122 925 adult HIV-infected patients aged 15 years or older from East, Southern and West Africa, Asia Pacific and Latin America. We use two methods to adjust for biases in mortality estimation resulting from loss from follow-up, based on double-sampling methods applied to patient outreach (Kenya) and linkage with vital registries (South Africa), and apply these to mortality estimates in the other three regions. Age, gender and CD4 count at the initiation of therapy were the factors considered as predictors of mortality at 6, 12, 24 and >24 months after the start of treatment. Results Patient mortality was high during the first 6 months after therapy for all patient subgroups and exceeded 40 per 100 patient years among patients who started treatment at low CD4 count. This trend was seen regardless of region, demographic or disease-related risk factor. Mortality was under-reported by up to or exceeding 100% when comparing estimates obtained from passive monitoring of patient vital status. Conclusions Despite advances in antiretroviral treatment coverage many patients start treatment at very low CD4 counts and experience significant mortality during the first 6 months after treatment initiation. Active patient tracing and linkage with vital registries are critical in adjusting estimates of mortality, particularly in low- and middle-income settings.
Depth control of Submarine : a Fuzzy Logic approach

Ocean has attracted the attention of the researchers owing to its importance on environmental issues, resources, scientific works and military tasks requiring critical control operations of the submarine to achieve the desired objectives. This paper represents the performance comparison of various controllers for the depth control of the submarine employing the stern plane actuation technique which actuates the stern plane motor to achieve the desired depth. The controllers such as PI Controller, Fuzzy logic based Controller (FLC) and Type 2 Fuzzy Logic based Controllers (T2FLC) have been applied for the depth control operation of the submarine and the simulation has been carried out based on quantitative performance analysis of the controllers using various performance criteria in MATLAB Simulink © environment. The results obtained in terms of Stern plane angle, Rate of change of Depth and Actual depth, indicate that the T2FLC provides better performance than other controllers used.
Noise-reduced Example-Based Image / Video Enlarging 李昆霖、李根逸、陳炳宇 國立臺灣大學

To enlarge an image, bi-linear interpolation and bi-cubic interpolation are two common and simple methods, but they always generate unacceptable zigzag or blurry results. Some image processing methods are provided to reduce the zigzag or blurry effects by enhancing the edges and textureness or deblurring the images, and some example-based methods used some training high resolution images to provide the missing high frequency part for the enlarged input low resolution image. Although it is possible to record the relationship between the high resolution and low resolution samples of some natural training images and transfer the relationship to enhance the enlarged input low resolution image by using the example-based methods, the noise embedded in the input image is also amplified and makes the enhanced enlarged image looks noisy. Due to the noise, the example-based methods cannot be used to produce a satisfying result when applying to video frames directly. In this paper, we present an improved example-based approach that records the relationship of the middle and high frequency data of some training images, since the low frequency data is not needed for reconstructing the high frequency one. When enlarging an image, we only use the middle frequency data to estimate the missing high frequency one and transfer it to enhance the textureness of the enlarged input image. Since our approach can reduce the noise while enhancing the enlarged image, it can also be used for enlarging the video frames directly.
fusion using radiostereometric analysis stabilization to lumbar discectomy and posterior lumbar An in vivo kinematic comparison of dynamic lumbar

Background: Biomechanical studies have shown that dynamic stabilization restores the neutral zone and stabilizes the motion segment. Unfortunately, there are limitations to clinical measurement of lumbar motion segments when using routine radiographs. Radiostereometric analysis is a 3-dimensional technique and can measure the spinal motion segment more accurately than techniques using plain film radiographs. The purpose of this study was measure and compare the range of motion after dynamic stabilization, posterior lumbar fusion (PLF), and lumbar discectomy. Methods: Four patients who underwent lumbar decompression and dynamic stabilization (Dynesys; Zimmer Spine, Inc., Warsaw, Indiana) for treatment of lumbar spondylosis were compared with 4 patients with a similar diagnosis who were treated by PLF and pedicle screw fixation (PLF group) and 8 patients who had undergone lumbar microdiscectomy (discectomy group) for treatment of radiculopathy. During the surgical procedure, 3 to 5 tantalum beads were placed into each of the operative segments. The patients were followed up postoperatively at 1 month, 1 year, and 2 years. At each follow-up time point, segmental motions (flexion, extension, and total sagittal range of motion [SROM]) were measured by radiostereometric analysis. Results: Flexion, extension, and SROM measured 1.0° 0.9°, 1.5° 1.3°, and 2.3° 1.2°, respectively, in the Dynesys group; 1.0° 0.6°, . 1° 0.9°, and 1.5° 0.6°, respectively, in the PLF group; and 2.9° 2.4°, 2.3° 1.5°, and 4.7° 2.2°, respectively, in the discectomy group. o significant difference in motion was seen between the Dynesys and PLF groups or between the Dynesys and discectomy groups in extension. ignificant differences in motions were seen between the PLF and discectomy groups and between the Dynesys and discectomy groups in flexion P . 007) and SROM (P .002). There was no significant change in the measured motions over time. onclusions: In this study a significantly lower amount of motion was seen after dynamic stabilization and PLF when compared with iscectomy. A future study with a larger cohort is necessary to examine what effect, if any, these motions have on clinical outcomes. 2012 ISASS International Society for the Advancement of Spine Surgery. Published by Elsevier Inc. All rights reserved.
CFEDR: Control-flow error detection and recovery using encoded signatures monitoring

The incorporation of error detection and recovery mechanisms becomes mandatory as the probability of the occurrence of transient faults increases. The detection of control flow errors has been extensively investigated in literature. However, only few works have been conducted towards recovery from control-flow errors. Generally, a program is re-executed after error detection. Although re-execution prevents faults from corrupting data, it does not allow the application to run to completion correctly in the presence of an error. Moreover, the overhead of re-execution increases prominently. The current study presents a pure-software method based on encoded signatures to recover from control-flow errors. Unlike general signature monitoring techniques, the proposed method targets not only interblock transitions, but also intrablock and inter-function transitions. After detecting the illegal transition, the program flow transfers back to the block where the error occurred, and the data errors caused by the error propagation are recovered. Fault injection and performance overhead experiments are performed to evaluate the proposed method. The experimental results show that most control flow errors can be recovered with relatively low performance overhead.
RF and Microwave Components in LTCC

Low Temperature Co-fired Ceramic (LTCC) technology is a multi-layer ceramic process that can be used to fabricate low cost, high performance RF and microwave components. It is an extremely versatile technology that can be used to realise a wide range of components from simple passive filter structures and packages to complex sub-system assemblies containing discrete SMT (Surface Mount Technology) components, bare die and printed passives. This paper presents an overview of the LTCC fabrication process and details an on-going programme of work aimed at providing the detailed RF characterisation data that designers require in order to fully exploit the benefits of the technology. Measured material characterisation data is presented for a number of different LTCC substrate materials and metallisations. Two different band-pass filter structures, one at 2.4GHz the other at 28GHz, have been developed to assess the accuracy of the characterisation data. Details of the design, layout and measured performance of these filters is also presented. Overview of LTCC Technology LTCC technology is a multi-layer ceramic process. The ceramic layers are tape-cast in their pre-fired “green-state” and the tape is cut to the required size. Registration holes, via holes and cavities are then punched or drilled into the different tape layers. The via holes are normally filled, often with silver, and then thick film processing is used to print metallisation patterns on each, or selected tapes. When thick film processing is used, the minimum line width/gap is around 100μm. If finer line geometries are required a photo-imagable process can be used [1]. The different layers are then inspected, registered and laminated and then co-fired at around 850°C. Post fire processing of the top layer is also an option that is sometimes used. This description of the LTCC process makes it sound similar to conventional multilayer circuit boards fabricated using laminate materials such as FR4. However, LTCC has a number of advantages: • Lower loss dielectric (lower tanδ) • Better controlled dielectric properties (εr, tanδ and thickness) • It is well suited to producing modules in low-cost SMT packages, including BGA topologies • LTCC processes can produce modules, which are well suited to incorporating bare die. Cavities and integral heat-sinks can be easily realised • Many processes allow the integration of printed passive components (resistors, capacitors and inductors) A 3-dimensional image of an LTCC assembly incorporating a bare die, SMT components and integrated passive is shown in Figure 1.
Finding suitable programs: Semantic search with incomplete and lightweight specifications

Finding suitable code for reuse is a common task for programmers. Two general approaches dominate the code search literature: syntactic and semantic. While queries for syntactic search are easy to compose, the results are often vague or irrelevant. On the other hand, a semantic search may return relevant results, but current techniques require developers to write specifications by hand, are costly as potentially matching code need to be executed to verify congruence with the specifications, or only return exact matches. In this work, we propose an approach for semantic search in which programmers specify lightweight, incomplete specifications and an SMT solver automatically identifies programs from a repository, encoded as constraints, that match the specifications. The repository of programs is automatically encoded offline so the search for matching programs is efficient. The program encodings cover various levels of abstraction to enable partial matches when no or few exact matches exists. We instantiate this approach on a subset of the Yahoo! Pipes mashup language, and plan to extend our techniques to more traditional programming languages as the research progresses.
Functional differentiation and organization of feline midlumbar commissural interneurones

Interneurones interconnecting the two sides of the spinal cord (commissural interneurones) are critically important for interlimb coordination, but little is known about their organization. We have examined the inputs to commissural interneurones located in the midlumbar segments with projections to contralateral motor nuclei, aiming to determine whether they form distinct subpopulations. Based on intracellular records from 78 interneurones, two major non‐overlapping subpopulations were identified: one monosynaptically excited by group II muscle afferents (n= 10), the other monosynaptically excited by reticulospinal neurones (n= 52). Monosynaptic input from group I muscle afferents and/or from vestibulospinal tract neurones was found in those with monosynaptic reticulospinal, but not group II input, and in a few other neurones (n= 6). Only disynaptic input from these sources was found in the remaining 10 interneurones. Disynaptic excitatory input from ipsilateral and contralateral muscle afferents and from descending tracts was distributed less selectively and might mediate coexcitation of interneurones with monosynaptic afferent or descending input. The dominant disynaptic and polysynaptic input was, however, inhibitory. IPSPs were evoked from the descending tracts in a high proportion of the commissural interneurones that were monosynaptically excited by group II afferents (55%) and from group II afferents in a high proportion of the commissural interneurones that were monosynaptically excited by reticulospinal fibres (78%). This distribution suggests that the two subpopulations are activated differentially, rather than being coactivated, in either centrally initiated movements or reflex adjustments. This would be consistent with the previous demonstration that noradrenaline differentially affects commissural neurones of the two subpopulations.
A Bio-chemical Approach to Awareness in Pervasive Systems

The emerging proliferation of devices with sensing and networking technologies offers opportunities for delivering pervasive services through interactions between spatially local resources. Here, applications are challenged to become aware of their surroundings: to discover, filter and reason on information relevant to their goals. Without centralised services to control information flow, decentralised mechanisms must partition these responsibilities across the environment. This paper explores a bio-chemically inspired approach to realising awareness in an open, dynamic setting, building towards complex self-organising awareness algorithms for data collection, reasoning, and querying. Through simulation we provide a preliminary evaluation of the proposed approach.