Miracle-dz/UniFAR-FTUs huggingface dataset:
Muestreo comprimido en red inalámbrica de sensores para monitorización de vibración en puentes

Over 70% of the bridges in Costa Rica have critical elements in the structure. Wireless sensor networks have been used for structural monitoring because of their short installation time and low economic cost due to the lack of wiring. In this research is presented a wireless sensor network which uses a compressed sensing algorithm for vibration monitoring on bridges. The network design is proposed expecting data integrity and energy harvesting. The algorithm performs downsampling by coder-decoder pairs. The selected pair is conditional encoder and predictive decoder because this combination has elements in common that can shared to get better estimates in few steps. Two coder-decoder pairs variants are presented: variable-fixed and fixed-variable. The first one proposes a constant factor compression during each sampling period while the second presents variable compression that depends of the signal behavior over time. After an experimental test using Waspmotes the fixed-variable variant has a 56.58% reduction of power consumption by introducing a maximum error ± 0.00195g and compress in 52.44% the amount of samples. This algorithm increased the network energy autonomy from 17 hours to 26.5 hours. Through mathematical analysis, the variable-fixed technique reduces in 74.81% the power consumption in sensing nodes transmissions and decrease in 90% the number of samples.
Likiditenin Borç Üzerine Etkisi: Otomotiv Firmalarında Bir Uygulama

Liquidity refers to the ability of an enterprise to pay off its short or long term liabilities. The higher the profit of companies, the more the liquid assets. The sales, and consequently the profits of automotive companies operating in Turkey have been increasing in the last few years. Liquidity is expected to increase with the increase of profits. The aim of the study is to investigate the correlation between solvency and liquidity of automotive companies. In the application, the eight-year (2010-2017) financial statement data of 11 automotive companies operating in the Istanbul Stock Exchange (Turkey) were used. A panel data analysis was conducted using financial leverage ratio, cash, receivables, inventories, liabilities and revenue variances obtained from the financial statement data. It was determined that automotive companies had 54 percent of their assets in debts. As a result of the analysis, it was determind that there was a positive correlation between financial leverage ratio and receivables, liabilities and inventories, whereas there was a negative correlation between financial leverage ratio and revenues and liquid assets.
Frequency of Acute and Late Reaction of Non-Ionic Iodinated Contrast Media in Contrast Enhanced Computed Tomography

Introduction: A contrast agent is a substance used to increase the contrast of structures or fluids within the body in medical imaging. Contrast agents absorb or alter external electromagnetism or ultrasound, and enhance the radio density in a target tissue or structure. Contrast agents are commonly used to improve the visibility of blood vessels and the gastrointestinal tract. Several types of contrast agent are in use in medical imaging and they can roughly be classified based on the imaging modalities where they are used and the purposes of this study to find out the frequency of adverse reactions of non-ionic iodinated contrast media in contrast enhanced Computed Tomography. Material Methods: It was cross-sectional observational study conducted on 133 patients who visited Al-Razi healthcare hospital, Lahore for a CT (computed Tomography) scan. 36 of them got adverse reactions to the non-ionic contrast media. The frequency of adverse reactions happening with the non-ionic contrast usage was determined Results: In this study, one hundred and thirty-three patients who fulfilled the criteria were included in the study. 36 of the patients had adverse reactions to the non-ionic contrast media which included shivering, fatigue, headache, nausea and rashes. All of the patients had no previous history of allergies or contrast reactions. The mean age of patients ranged from 51.49 ± 16.19years. Conclusion: In conclusion, the use of non-ionic contrast media as a CT contrast agent has a safety profile. It is concluded that a non-ionic iodinated contrast media reaction rarely results in long-term sequelae as it is less severe and easily treatable.
A Cross-sectional Study: Association Between sarcopenia and Osteoporosis in Type 2 Diabetes Mellitus Patients With a High Glycated Hemoglobin Level

Background: Sarcopenia and osteoporosisare commonly observed in individuals with type 2 diabetes mellitus (T2DM). Thus, this study investigated the association between sarcopenia and osteoporosis in T2DM patients with a highglycated hemoglobin (HbA1c)level.Methods: This study recruited 98 Chinese patients with T2DM who were aged ≥ 50 years, and their body compositions were evaluated using dual-energy X-ray absorptiometry. Moreover, the fFasting blood glucose, HbA1c, B collagen-specific sequences (B-CTX), osteocalcin(OC), propeptide of type 1 procollagen(P1NP), 25-hydroxy vitamin Dlevels were evaluated.Sarcopenia was defined as skeletal muscle mass index (SMI) <7.0 kg/m2 for men and < 5.4 kg/m2 for women.Results: There were 42 men and 56 women, with an average age of 65.86 ± 8.32 years and HbA1c level of 8.59% ± 1.87%. The prevalence rates ofsarcopenia, osteopenia, and osteoporosis were48.0%, 37.8%, and 33.6%, respectively.Moreover, the prevalence of osteoporosis was significantly higher in women than in men (50% vs. 11.9%, P = 0.000). The prevalence of sarcopenia was significantly higher in patients with HbA1c levels> 9.0% than in those with HbA1c levels < 9.0% (62.2% vs. 39.3%, P = 0.037). However, the prevalence of osteopenia and osteoporosis in patients with HbA1c levels > 9.0% differed from those with HbA1c levels < 9.0%(29.5% vs.51.4% for osteopenia, 32.8% vs.35.1% for osteoporosis; P = 0.022). The height and weight of the osteoporosis group significantly decreased compared with those of the normal bone mineral density (BMD), whereas the serum BCTX, OC, and PINP levels significantly increased.The SMI, trunk muscles, skeletal muscle parameters, lumbar spine bone mineral content (BMC), lumbar spine BMD, femoral BMC, and femoral BMD decreased significantly in T2DM patients with osteoporosis.Sarcopeniawas associated with a higher height (odds ratio [OR] = 1.524, 95% confidence interval [CI] = 1.196-1.698, P = 0.000), lower body weight (OR = 0.735, 95% CI = 0.640-0.844, P = 0.000), and higher body fat content (OR = 1.211, 95% CI = 1.046-1.402, P = 0.011). Meanwhile, osteoporosis was correlated to a lower SMI (OR = 0.178, 95% CI = 0.044-0.817, P = 0.015). Conclusions: Ahigh HbA1c level was associated with a higher prevalence of sarcopenia and osteoporosis in T2DM patients, and low muscle masswas considered a risk factor for osteoporosis inthis group of patients.
Transmisor outphasing en UHF usando amplificadores clase E a GaN HEMT

A Chireix outphasing transmitter at UHF band is presented in this paper, based on class E RF power amplifiers. As recently proved in [1], properly transforming the load modulation path, imposed by the non-isolated combiner, into fundamental frequency impedan ce values at the device drain terminals as close as possible to those assuring zero voltage switching condition, good efficiency values may be kept along a significant output power range. A lumped element implementation of the amplifiers and the combiner, together with the use of GaN HEMTs, allowed controlling the output power over a 6 dB range with an efficiency value over 60%. Experiments with asymmetrical two tones, conceived as a discrete spectrum signal with a 1:4 envelope variation, have shown the capability of the arch itecture to be linearized using digital predistortion (DPD). In order to reproduce a spectrally efficient communication signal, with nulls in the envelope, a hybrid control strategy was employed, combining the outphasing between branches with amplitude variations of both RF excitation signals for the lower range of the envelope. Average drain efficiency and PAE values of 63% and 60.3% respectively have been measu red, for a 11.8 W and 5.06 dB PAPR WCDMA signal, while m eeting ACPR specifications.
Static and dynamic testing of power MOSFETs

Laboratory efforts to duplicate power MOSFET service failures in a controlled, short term laboratory experiment have largely been without success. Experimentation in this laboratory have established tests, both static and dynamic, that reproduce long term service type failures in a short term test. This paper describes these test results and comments on the resultant reliability improvements.
Predicting Stock Trends: A Multi Agent Approach

This thesis aims to develop a scalable distributed system that provides reliable information about the trend that a certain security will follow in the Stock Market using Machine Learning techniques. The core of the research presented in this thesis is the creation of a Multi Agent based system capable of predicting whether the price of a stock will rise, drop or stay. In order to do so, the problem is divided into three parts: Information Retrieval, Data Analysis and Data Visualization. The first part is focused on retrieving the necessary information from Internet and on transforming this raw data into computer-understandable structures that will allow further analysis. In addition to this, new financial indicators are calculated to provide more meaningful data to the system. The second part is focused on analyzing this preprocessed data using several Machine Learning methods. The methods that have been selected to execute the analysis are: Artificial Neural Networks, Decision Trees, Support Vector Machines and Reinforcement Learning. The idea behind using different methods besides testing the performance of each in this scenario, is the creation of a team of “data analyzers” like the ones found at investment firms. Following the “Keep it Simple” principle, third party libraries have been used when possible to diminish implementation costs. Finally, the third part deals with the problem of how to present the data and results to the users in a clear but informative way. Just this part on this own could perfectly be a Final Project in a Media Degree, so here we will present a gentle introduction to the Data Visualization world. Since this thesis is also a Computer Science Engineering Final Project, emphasis will be made in describing the system architecture and the technologies used to create it. In part because of this, this Thesis aims to create a Proof of Concept for a possible future product instead of realizing just a evaluation of Machine Learning methods applied to predicting stock trends
The Evolution of Subject Approaches to Innovation Measurement, and Implications for New Innovation Indicators

This thesis addresses a need for further evaluation of existing and new innovation survey indicators, which now provide an important evidence base informing better policy approaches. The research focus is on indicators produced from large scale, economy-wide innovation surveys, which collect firm-level data, and move beyond traditional R&D, patent, and bibliometric approaches by providing a direct, „subject‟ approach to measurement. Such surveys are conducted in approximately 80 countries, producing numerous indicators, though many portray counterintuitive results, and are subject to various shortcomings. Consequently, this study seeks to explore how new indicators can improve understanding of innovation. Three indicator categories are assessed, using microdata from two iterations of a large regional innovation survey, the Tasmanian Innovation Census (TIC). Results examine three degrees of innovation novelty, and show that R&D activity and intensity provide good measures of innovation capability. Complex „mode‟ indicators reveal the distribution of innovation characteristics at a „system‟ level, across sectors, and for firms of different sizes, with linear, chain-link and systems theories all underpinning selected indicators. Using panel data, „output‟ mode indicators reveal specific movement of both innovative and non-innovative firms between four innovation modes, providing a dynamic understanding of capability development and erosion over time, and suggesting that innovation capability for the most part develops cumulatively. Innovation based on diffusion is shown as most common in services. Composite indicator results provide a simple, visual picture of sectoral innovation performance, demonstrating usefulness beyond the typical macro-level of analysis. Results and discussion expose issues around theory, policy and practice with implications for related future research, including a need for further work to standardise different indicators for degrees of novelty and capability, and for research to understand the links between innovation modes and economic outcomes.
High power microwave filters

In order to obtain filters capable of handling very high power, the use of radial lines and uniform line discontinuities was investigated as the most promising approach. In this connection, it was necessary to consider equivalent circuit and interaction effects for H-mode radial line mated at each end to uniform TE 10 waveguide for taper angles of 45 degrees. It was found that the equivalent circuit was valid for taper angles of 45 degrees, and that for engineering design purposes the interaction could be neglected. The author utilized the 45° tapers and the uniform lines to design a high power microwave filter capable of handling 700 kilowatts at 10 pounds pressure in 0.900 by 0.400 I.D. waveguide. The design procedure for a multi-element filter is described utilizing a partly graphical approach.
Ageing Effects on Tripping Risk: The Foot-Ground Clearance of Healthy Community Dwelling Japanese Cohorts Aged 50, 60 and 70 Years

BackgroundFalls-related injuries are particularly serious for older people, causing pain, reduced community engagement and associated medical costs. Tripping is the leading cause of falls and the current study examined whether minimum ground clearance (MFC) of the swing foot, indicating high tripping risk, would be differentiated across cohorts of healthy 50-, 60- and 70-years old community residents in Japan.MethodsThree groups (50s, 60s and 70s) of 123 Konosu City residents consented to be recorded when walking on an unobstructed surface at preferred speed. Gait biomechanics was measured using high speed (100 Hz) motion capture (OptiTrack – Natural Point Inc.), including step length and width, double support, foot contact angle and MFC (swing toe height above the ground). Multivariate Analysis of Variance (MANOVA) was used to confirm ageing effects on MFC and fundamental gait parameters. Pearson's correlations were performed to identify the relationships between mean MFC and other MFC characteristics (SD and SI), step length, step width, double support time and foot contact angle. ResultsCompared to 50s, lower step length was seen (2.69cm and 6.15cm) for 60s and 70s, respectively. No other statistical effects were identified for spatio-temporal parameters between the three groups. The 50s cohort MFC was also significantly higher than 60s and 70s, while step-to-step MFC variability was greater in the 70s than 50s and 60s. Pearson’s correlations demonstrated more symmetrical gait associated with greater MFC height. In the 70s increased MFC height correlated with higher MFC variability and reduced foot contact angle. ConclusionMFC height reduces from 60 years but more variable MFC appears later, from 70 years. While symmetrical gait was accompanied by increased MFC height, in the 70s group attempts to increase MFC height may have caused more MFC variability and lower foot contact angles, compromising foot-ground clearance. Assessments of swing foot mechanics may be a useful component of community falls prevention.
Computer-aided design and computer-aided manufacturing of below-knee prosthetics

The purpose of this research is to automate the design of lower limb prosthetics, specifically below-knee prosthetics, for patients who have undergone a loss of one of their lower limbs. It is shown how CAD and CAM will enable the prosthetist the opportunity to fully design the prosthesis using three-dimensional solid modeling as a medium, before final fabrication is completed. The designs will become more exact, requiring less of an artisan attempt at design. In the case of patients, who will require several prosthetic devices throughout their lives, the ability to store data on the progress of the prosthetic device may become a valuable tool in the overall rehabilitation and development of the patient. It is hoped that the use of CAD/CAM in the design and fabrication of children's prosthetic devices will enable faster preparation and fitting times than exist today. <<ETX>>
Biodegradable scaffolds for use in orthopaedic tissue engineering

A review of orthopaedic applications and biocompatibility studies of biodegradable polylactic acid, polyglycolic acid and their copolymers is presented. The experimental and clinical uses of polylactic acid-polyglycolic (PLA-PGA) polymers in the field of orthopaedics have seen significant growth recently, especially as fracture fixation devices and scaffolds for tissue ingrowth. Some complications have occasionally been reported following implantation of PLA-PGA biomaterials. Some of these problems may be attributable to biodegradation byproducts, which alter the pH of the environment. It is postulated that since the mechanical and other physical properties of these biomaterials can be appropriately designed within certain ranges, other aspects of orthopaedic medicine-such as soft tissue repair, synthetic grafts, and bone augmentation scaffolds-may be considered candidates of PLA-PGA usage. To this end, the release of bioactive agents may be controlled and delivered in situ according to the needs of the repair tissues.
Evolutionary genetic optimization of the injector beam dynamics for the ERL test facility at IHEP

: The energy recovery linac test facility (ERL-TF), a compact ERL-FEL (free electron laser) two-purpose machine, was proposed at the Institute of High Energy Physics, Beijing. As one important component of the ERL-TF, the photo-injector started with a photocathode direct-current gun was designed and preliminarily optimized. In this paper an evolutionary genetic method, non-dominated sorting genetic algorithm II, is applied to optimize the injector beam dynamics, especially in the high-charge operation mode. Study shows that using an incident laser with rms transverse size of 1~1.2 mm, the normalized emittance of the electron beam can be kept below 1 mm.mrad at the end of the injector. This work, together with the previous optimization for the low-charge operation mode by using the iterative scan method, provides guidance and confidence for future constructing and commissioning of the ERL-TF injector.
An Architecture for Adaptive Navigational Control

This paper describes a new type of control architecture that adaptively navigates a simulated mobile robot. A robust control system requires multiple strategies for formulating actions so that if one fails then another can be used. A consequence of the design of this architecture is a redundancy of c40ntrol strategies. It is this redundancy that facilitates a unique mechanism for achieving robust control through the adaptive utilisation of the various strategies in response to the environment. The mechanisms for adapting behaviour are described and their effects illustrated by robot simulations.
A wideband LNA employing gate-inductive-peaking and noise-canceling techniques in 0.18 μm CMOS

This paper presents a wideband low noise amplifier (LNA) for multi-standard radio applications. The low noise characteristic is achieved by the noise-canceling technique while the bandwidth is enhanced by gate- inductive-peaking technique. High-frequency noise performance is consequently improved by the flattened gain over the entire operating frequency band. Fabricated in 0.18 m CMOS process, the LNA achieves 2.5 GHz of -3 dB bandwidth and 16 dB of gain. The gain variation is within 0.8 dB from 300 MHz to 2.2 GHz. The measured noise figure (NF) and average IIP3 are 3.4 dB and -2 dBm, respectively. The proposed LNA occupies 0.39 mm 2 core chip area. Operating at 1.8 V, the LNA drains a current of 11.7 mA.
Dynamic performance of three phase four wire active filters

Active power filters are being developed as a viable alternative to passive filters for meeting harmonic distortion limits imposed on distribution systems. This paper presents a systematic design procedure for the components of an active power filter based on a voltage source topology, in a three-phase four-wire connection. It also investigates the dynamic performance of the active power filter particularly under unbalanced load conditions. A 5 kVA prototype filter is used to obtain performance features and validate theoretical considerations.
Analisa Risiko Pada Proyek Pembangunan Underpass Di Simpang Dewa Ruci Kuta Bali

Proyek Pembangunan Underpass di Simpang Dewa Ruci Kuta Bali diharapkan dapat memecah kemacetan yang sangat tinggi di pulau Bali dan dapat digunakan saat kegiatan APEC (Asia-Pacific Economic Cooperation) 2013. Pada proyek ini terdapat pekerjaan galian dengan MAT (Muka Air Tanah) tinggi dan banyak ketidakpastian yang sulit diprediksi, sehingga diperlukan adanya analisa risiko. Tugas Akhir ini bertujuan untuk mengetahui risiko Proyek Pembangunan Underpass di Simpang Dewa Ruci Kuta Bali. Untuk mengetahui risiko pada proyek ini dilakukan survey lapangan, kuisioner, dan wawancara. Tahapan penelitan dibagi menjadi tiga bagian yaitu identifikasi risiko, analisa risiko dan respon risiko. Identifikasi adalah tahap mencari variable-variabel risiko yang relevan pada proyek. Tahapan ini diawali dengan melakukan studi literatur dan kemudian melakukan survey pendahuluan kepada responden. Analisa risiko adalah proses mencari beberapa risiko yang signifikan dari segi waktu maupun biaya. Analisa risiko diterapkan terhadap hasil survey utama yang telah dilakukan sebelumnya. Metode yang digunakan adalah Severity Index dan Matriks Probabilitas-Dampak. Tahap terakhir adalah menentukan respon risiko terhadap risiko yang signifikan terhadap biaya dan waktu. Respon risiko didapat dengan melakukan wawancara terstruktur dengan para responden yaitu beberapa personel kontraktor yang menangani proyek pembangunan Underpass di Simpang Dewa Ruci Kuta Bali. Berdasarkan hasil analisa risiko maka diketahui bahwa hanya ada satu macam variable risiko yang signifikan terhadap waktu dan biaya,yaitu muka air tanah yang tinggi. Respon risiko yang dilakukan adalah dengan menyediakan pompa dengan kapasitas besar dan banyak.