Miracle-dz/UniFAR-FTUs huggingface dataset:
Subspace system identification of support‐excited structures—part I: theory and black‐box system identification

This paper reviews the theoretical principles of subspace system identification as applied to the problem of estimating black‐box state‐space models of support‐excited structures (e.g., structures exposed to earthquakes). The work distinguishes itself from past studies by providing readers with a powerful geometric interpretation of subspace operations that relates directly to theoretical structural dynamics. To validate the performance of subspace system identification, a series of experiments are conducted on a multistory steel frame structure exposed to moderate seismic ground motions; structural response data is used off‐line to estimate black‐box state‐space models. Ground motions and structural response measurements are used by the subspace system identification method to derive a complete input–output state‐space model of the steel frame system. The modal parameters of the structure are extracted from the estimated input–output state‐space model. With the use of only structural response data, output‐only state‐space models of the system are also estimated by subspace system identification. The paper concludes with a comparison study of the modal parameters extracted from the input–output and output‐only state‐space models in order to quantify the uncertainties present in modal parameters extracted from output‐only models. Copyright © 2012 John Wiley & Sons, Ltd.
Factors influencing the prevalence of postpartum anoestrus in New Zealand dairy cows

The aim of this study was to determine the association between age, interval from calving (PPI) and breeding worth (BW) and prevalence of postpartum anoestrus (AA), as well their effect on response to hormonal treatment by anoestrous dairy cows. Individual cow details were collated from 6649 cycling and 2446 AA animals in 29 herds. Probability of AA was influenced by herd and was negatively related to PPI and age (p 0.05). Response of AA cows to treatm ent with progesterone and oestradiol benzoate was evaluated using a subset of 1482 anoestrous cows. Within 7 days of treatment, oestrus was detected in 87.1% cows and conception rate to insemination during this period was 42.2%. Oestrous response varied between h erds but was not influenced by BW, PPI or age (p > 0.1). Conception rate was positively related to PPI (p 0.1). It is concluded that in commercial dairy herds the likelihood of a cow being AA is greatest in young and recently calved animals, but is not influenced by breeding worth.
DUAL-BAND EQUAL/UNEQUAL WILKINSON POWER DIVIDERS BASED ON COUPLED-LINE SECTION WITH SHORT-CIRCUITED STUB

This paper presents dual-band equal/unequal Wilkinson power dividers based on a coupled-line section with short-circuited stub (called as the \coupled-line section" for short), which consists of a pair of parallel coupled lines and a short-circuited stub. With the analyses of the phase shift and equivalent characteristic impedance, the coupled-line section is used to replace the quarter-wavelength branch line in the conventional equal/unequal Wilkinson power divider to obtain excellent dual-band operation. The closed-form equations and design procedures of dual-band Wilkinson power divider are given, where one degree of design freedom is obtained and design ∞exibility is shown. As two examples, a dual-band equal Wilkinson power divider with the frequency ratio of 1:8 : 1 and an unequal one with the high power dividing ratio of 7 : 1 and frequency ratio of 1:8 : 1 are designed, fabricated and measured. The measurements are in good agreement with the simulations. It is shown that the proposed power dividers have simple topologies, and can be easily fabricated with small frequency ratios and high power dividing ratios.
Forecasting Practices in US Corporations: Survey Results

By surveying current forecasting practices at 500 US corporations, we explored the reasons managers rely heavily on judgmental forecasting methods and attempted to identify what needs of practitioners are not met with current procedures. Although managers are more familiar with quantitative forecasting methods than in the past, the level of usage has not increased. Practitioners continue to rely largely on judgmental forecasting methods. The major obstacles cited to the use of formal forecasting are lack of relevant data and low organizational support. Further, when quantitative forecasting methods are used, they frequently are judgmentally adjusted. Most practitioners prefer a bias in the forecast that is related to the organizational reward system.
Faulty Insulator Diagnosis for UAV Videos Based on Repetitiveness Feature

In this paper, we proposed a faulty insulator diagnosis method for insulator faulty detection based on repetitiveness feature from UAV video sequence. The repetitiveness feature which describes the relationship of each structural element of insulator is employed for the insulator faulty diagnosis, and is robust to noise, camera motivation and complex backgrounds. Base on the repetition of structural element, our method can not only deal with single insulator with multi-faults, but also work on double insulator strings. The recognition results on insulator dataset and UAV video show the effectiveness of our method.
Comparison in ankle stiffness between French international tennis table players and sedentary subjects

It is well known that the performance in stretch-shortening cycle exercises is greatly influenced by the elastic properties of muscle-tendon complexes in the lower limbs. Recent studies have shown that musculotendinous stiffness in well-trained athletes differed from sedentary subjects. For example, we have shown that long and triple jumpers presented an increased musculotendinous stiffness in plantarflexors (not published). However, in long distance runners, while stiffness of the vastus lateralis tendon was shown to be increased (Kubo et al. 2000a), no changes were observed in stress-strain characteristics of the Achilles tendon (Rosager et al. 2002). Moreover, it is well known that an increased musculotendinous (MT) stiffness improves the muscle force transmission to the skeletal structures and thus lead to a reduced stretchshortening cycle time. In the present study, it is hypothesized that high level sportsmen in physical activities which implies displacements with reduced ground contact time (and so reduced stretch-shortening cycle time) present such an increased MT stiffness. The aim of the present study was to compare the MT and the musculoarticular (MA) stiffness in plantarflexors between international tennis-table players and sedentary subjects.
CO-CREATION APPLIED TO INNOVATION FOR BRANDING ONLINE DISTANCE EDUCATION

This exploratory qualitative research investigates branding innovation for online distance education in Australian regional universities. The purpose is to apply co-creation to specify the type of innovation and branding approach for online distance education. The research purpose was achieved by studying two regional universities in Australia. The data was collected through in-depth interviews. Convenient sampling was employed to finalize the total sample of 36 managers, administration officials, technical staff and academics in both universities. Data analysis was conducted by thematic analysis. Research findings emphasized the importance of continuous innovation based on co-creation and cooperative branding for online distance education. Findings of this qualitative study were constructed on direct interviews conducted with internal stakeholders indicating three emerging themes: need for flexible education, growing market opportunities and the role of technological support. The paper argues that continuous innovation with cooperative branding will enhance academic and competitive performance of regional universities. Branding could be strategized by point-of-parity and cooperation replacing point-of-difference approach in the education industry. Research outcomes cover a gap in literature on branding online distance education for innovation based on co-creation. This study could be replicated in other countries including Turkey to investigate factors affecting innovation for branding distance education.
Effect of Curcuma longa L. and curcumin on diabetes and it’s complications: A review

Background: Diabetes mellitus, remains a metabolic disorder which is alarmingly rising in the world. It is characterized by hyperglycemia, and associates relative or absolute insulin deficiency or resistance. Disruption of the metabolism may cause lot of micro and macro vascular complications mostly affecting vital organs like kidneys, heart, eyes, and nerves. Objective: To discuss the potential of C. longa and its constituent curcumin in treatment of diabetes mellitus and its complications. Method: An electronic search was performed using Science Direct, Scopus, Springer link, PubMed, Google scholar and collected articles in English up to 2020 August 15 relating to C. longa and curcumin in treatment of diabetes mellitus and its complications. Results: C. longa root or rhizome is an indigenous herb used as a spice in Asian cuisine for thousand years and known to have various therapeutic, medicinal applications for various diseases including diabetes. Curcumin is the major polyphenolic constituent of, C. longa. Human and animal researches conducted using C. longa and curcumin have proven that, the usage of C. longa is beneficial for the treatment of diabetes mellitus including diabetic complications. Curcumin has been reported to prevent the development of diabetes by exerting its cellular effects via various molecular mechanisms. Therapeutic potential of curcumin has been reported against various diabetic complications such as nephropathy, retinopathy, cardiac myopathy, etc. in numerous preclinical and clinical studies. Conclusion: These findings might enable to design and practice novel treatment strategies for diabetes mellitus and its complications, and promote inclusion of C. longa in clinical practice for the treatment of diabetes mellitus and diabetes related diseases. Furthermore, C. longa clinically proven ailment for many diseases including diabetes could be consumed as a safe ingredient of healthy diet. More attention should be extended towards conducting further research on this valuable molecule to utilize it as a therapeutic agent for the treatment of diabetes mellitus and other human diseases.
A mobile robot control centre for mission and data management

In this paper, the control and localization of mobile robots using a three-dimensional model of the operating environment is discussed. The authors provide a new concept for a control center which makes use of a virtual reality environment model to improve mission management, operator situation awareness and access to robot sensor information. The model is built from the robot's sensor data together with photos taken by a swivel-mounted onboard camera, and the robot is controlled by a straightforward goal designation in this virtual environment. Furthermore, the model is used to determine the robot's position by comparing the virtual with the real view.
Regenerating-mode low-speed operation of sensorless induction motor drive with adaptive observer

Speed estimation methods for sensorless induction motor drives can be divided into two groups. One is based on information about fundamental components of stator currents and voltages. The other is based on high-frequency components injection in stator voltages or currents. The latter may operate stably under zero frequency, which occurs in regenerating mode at low speeds. It, however, causes loss increasing and torque ripple. The former is difficult to operate under zero frequency. The authors propose a stable method categorized in the former group even in regenerating mode at low speeds. The proposed method is based on an adaptive flux observer. First, a new observer gain design is shown. Next, a method avoiding zero-frequency operation with controlling a rotor flux level is proposed.
Global wind turbine FTC via T-S fuzzy modelling and control

Abstract This paper presents a new approach to active sensor fault-tolerant control (FTC) for offshore wind (OSW) turbine systems operating in the low wind speed region described via Takagi-Sugeno (T-S) multiple models. The FTC strategy is designed in such way that aims to maintaining nominal wind turbine controller without change in both fault and fault-free cases. This is achieved by inserting an observer augmented by a proportional integral feedback to be capable to estimate different generator and rotor speed sensors fault for compensation purposes. Due to the dependency of the FTC strategy on the fault estimation the designed observer has the capability to estimate a wide range of time varying fault signal. Moreover, the robustness of the observer against the difference between the anemometer wind speed measurement and the unmeasurable effective wind speed signal has been taken into account. The corrected measurements fed to a T-S fuzzy dynamic output feedback controller (TSDOFC) designed to track the desired trajectory. The stability proof with H ∞ performance and D-stability constraints is formulated as a Linear Matrix Inequality (LMI) problem. The strategy is illustrated using a non-linear wind turbine benchmark system model offered within a competition led by the companies Mathworks and KK-Electronic.
Introduction of serial architecture for small CNC facilities

Purpose: The concept of open-architecture control, which has been used as a main method of control in many branches such as automatic systems of machining, robotics, testing and control, causes a great increment in efficiency and precision of control systems and dynamic capability to industrial control networks. Design/methodology/approach: The high execution costs in one hand and unnecessary usage of all OAC standard components on the other hand, makes the modeling of OAC concept impossible for such systems. Findings: This paper tries to represent a simple system based on elimination of unessential elements of openarchitecture to reach a limited and efficient control system. Research limitations/implications: In hierarchical architecture systems, regarding to the synchronous processes of calculation and controlling, the total execution time is very low in comparison with similar serial system. In spite of this, the execution time of synchronous processes in serial architecture is lower than hierarchical one. Practical implications: The utilization of one processor instead of multiple one, merging the industrial control network layer into system management layer and omission of processor execution layer in each axis and optimized using of multi-tasking capability of processor. Originality/value: The analysis of simulated data in motions with higher degrees of freedom shows that the usage of CNC machines with serial architecture for higher than 3-degrees of freedom is unaccepted due to large increment in total machining time.
Evaluation of hematological parameters in covid-19 patients in district Hapur

Objective: The coronavirus disease (COVID-19) sparked from Wuhan city of China and rapidly developed into a pandemic. The critically ill patients of COVID-19 exhibit features of hyper inflammation, and the particular blood tests may be rewarding for prognosis. Our aim was to investigate the CBC, which includes total leukocyte, lymphocytes and granulocytes count, Hemoglobin, MCV, MCH, MCHC, RBCs and Platelet count, NLR etc. The current study was conducted to conclude the alteration in blood parameters and their association with the severity and mortality of COVID-19 patients. Methods: An observational cross-sectional study was conducted retrospectively, a total of 100 COVID-19 positive patients were examined: 50 were mild, 25 were moderate, 10 were severe, and 15 were critically diseased patients. Unfortunately, we recorded 6 deaths among the critical group. The overall mean age observed in our study was 48.94 years, where the mean age for critical individuals was 62.12 ± 14.35 years. Results: A significant association between the disease severity and elevation in blood parameters were observed. The total WBC's and Neutrophils count were significantly decreased (p value
Barriers to Development of Selected Municipalities of Sulu Province

This study was conducted to determine the barrier to the development of selected municipalities of Sulu province. It aimed to find out the Suluanos’ concept of development in terms of political, economic, socio-cultural, technological, and ecological aspects, including how these perceived barriers affect the development of Sulu. This research utilized the descriptive method where the Quantitative aspect gathered the data from 400 adults of ten big municipalities using a checklist questionnaire. The respondents were selected through systematic sampling. For the qualitative part, the collected data were from 90 participants through focus group discussions. The statistical tools used were frequency, percentage, mean, standard deviation, and group means. The finding revealed that the Suluanos’ concept of development upheld the development policies which are participatory, equitable, appropriateness, concertizing, and environment friendly and the corresponding functions of development such as the political, economic, socio-cultural, technological, and ecological aspects. Of the five development functions, the economic aspect (2.95) was the main barrier to development. It is followed by the technological aspect (2.91), the political (2.79), and ecological (2.42) as the fourth rank. On the other hand, the socio-cultural part (2.21) was the least encountered barrier. The perceived barriers that affected the development of Sulu were related to lack of high ethical standards, transparency, accountability, effectiveness, and lack of respect for and commitment to social justice, human rights, environmental life protection, and people's empowerment. Based on the data gathered, the findings made the researcher conclude that the political, economic, technological, socio-cultural, and ecological aspects in Sulu were considered barriers to development. They were not within the bounds of good governance. Bureaucracy was weak due to the leaders' personalities, who were neither transactional nor transformational. At the same time, they were not within the context of the alternative model of development. To minimize if not eliminate the barriers to development, the government's efforts should be geared towards accountability to improve the quality of governance and dispensation of justice. Further studies are recommended to determine other predictors that can similarly evaluate the development conditions of Sulu Province.
Electromagnetic simulation of bonding wires and comparison with wide band measurements

Several typical bonding wire configurations have been measured in a frequency range up to 20 GHz using a vector network analyzer. Based on scanning electron microscope (SEM) pictures all bonding wires have been discretized and orthogonal grids suitable for electromagnetic simulation have been generated. Full wave finite difference time domain (FDTD) simulations as well as static and quasi static inductance extraction using a new Monte Carlo technique and FastHenry as well as capacitance extraction with a finite element method have been carried out. Numerical results are compared to measured scattering parameters and their quality and frequency dependence is discussed. All simulation techniques are evaluated with respect to their computational effort.
The problem of power factor in VRPM (transverse-flux) machines

The purpose of the paper is to explore the theory of power factor in variable reluctance permanent magnet (VRPM) machines and to understand what physical features of these machines tend to cause the low value. A single figure of merit, for a given design, is identified that effectively determines what the best available working power factor may be. The same figure of merit is applicable to synchronous machines of conventional configuration, so that comparison can be made between VRPM and conventional machines and the fundamental reasons for their difference in working power factor understood. The scope for power factor improvement in VRPM machines can then be examined, by changing the electromagnetic design so as to modify the figure of merit appropriately. However, it will become clear that a very limited amount of improvement is possible, and low working power factor seems to be the price that must be paid for the high specific output.
Reliability Analysis Using Field Data Findings with Undefined Failure Mode - An Analysis Not Necessarily Conservative

This work presents a case study, comparing the results of two reliability analyzes developed with the objective of determining optimum schedule maintenance intervals to guarantee adequate levels of components reliability. Using field failure data, the first analysis took into account every reported failure (even not having clear information if the failures were really related with the failure mode in question), and the second analysis did not take into consideration one of the failure reports on the reliability analysis. On the contrary of what one may think the second analysis (considering less one failure) identified a smaller schedule maintenance interval to obtain the same level of component reliability. This real case indicates that taking into account failure reports where it is not clear if the failure should be part of the analysis may lead to non-conservative results.
NON-FATAL INJURIES TO CAR OCCUPANTS: INJURY ASSESSMENT AND ANALYSIS OF IMPACTS CAUSING SHORT AND LONG TERM CONSEQUENCES WITH SPECIAL REFERENCE TO NECK INJURIES

This thesis addresses non-fatal injuries leading to disability following motor vehicle collisions, based on data from insurance files, police reports and crash recordings of real-life rear impacts where the change of velocity and the crash pulse were measured. The main focus is on minor (AIS 1) neck injuries, also called whiplash injuries. The purpose is to describe the distribution of disabilities among occupants over time and to study the importance of different injury severity assessment levels on the priority ranking of the disability pattern. Another purpose is to study the characteristics and associated risk factors of rear impacts causing short- and long-term consequences to the neck (AIS 1) regarding crash severity and risk of injury in the struck car, in different car models. It was found that during the last two decades there has been a change in the distribution of disabilities. Two body regions dominated the change. Injuries to the lower extremities have decreased since the 1970s and AIS 1 neck injuries have increased. Furthermore, depending on level of disability, different types of injuries were predominant. Concerning risk factors for AIS 1 neck injuries in rear impacts there were differences regarding crash severity parameters for long- and short-term consequences. The principal conclusion is that AIS 1 neck injuries have increased both in proportion and in number and are the dominating injury among non-fatal injuries leading to disability. This should preferably be evaluated with on-board measurement techniques in real-life collisions. It is recommended that the prevention of neck injuries in rear impacts should be directed toward the seat characteristics of the car. Priorities for intervention should be based on fatalities and injuries causing long-term consequences. (A)
Fatigue Life of Leadless Chip Carrier Solder Joints During Power Cycling

An ana1ytica1 method is described which provides estimates to first order of the number of either power or envirnnmenta1 cyc1es 1eading to so1der joint fai1ure. Vari0us parameter variations such as so1der joint height, ceramic chip carrier (CCC) size, printed c1rcuit substrate (PCS) materia1, etc. are investigated and discussed and samp1e estimates for a 0.65 x 0.65-in CCC are given.