gebhart/patrepeval huggingface dataset:
Prediction of Fault Detection Based on Vibration Analysis for Motor Applications (2021)

Vibration Analysis on motor parts has been done before fitment to detect minute surface and sub-surface cracks and other defects. While there are many other fault detection methods, vibration analysis has been used due to its low requirements in equipment, resources and fast data acquisitions. Vibration Condition Monitoring is the process through which the current working condition of a machine can be ascertained by using vibration analysis. This paper deals with the condition monitoring and prediction of faults in a two- motor. Since each part in the motor is distinct, during working, each part produces its own distinct vibration signature. Using accelerometers an ADXL 335 and an in- built Smartphone accelerometer, the vibrations produced were recorded. Faults were introduced into the motor by replacing the normal parts with faulty parts. These data were imported to MATLAB software. From the vibration data recorded before and after the introduction of the faults, time and frequency domain plots were created. This work present a method for fault detection of motor using vibration signals and with use of FFT, location of fault can be detected.
Wireless Power Transfer in Loosely Coupled Links: Coil Misalignment Model (2010)

A novel analytical model of inductively coupled wireless power transfer is presented. For the first time, the effects of coil misalignment and geometry are addressed in a single mathematical expression. In the applications envisaged, such as radio frequency identification (RFID) and biomedical implants, the receiving coil is normally significantly smaller than the transmitting coil. Formulas are derived for the magnetic field at the receiving coil when it is laterally and angularly misaligned from the transmitting coil. Incorporating this magnetic field solution with an equivalent circuit for the inductive link allows us to introduce a power transfer formula that combines coil characteristics and misalignment factors. The coil geometries considered are spiral and short solenoid structures which are currently popular in the RFID and biomedical domains. The novel analytical power transfer efficiency expressions introduced in this study allow the optimization of coil geometry for maximum power transfer and misalignment tolerance. The experimental results show close correlation with the theoretical predictions. This analytic technique can be widely applied to inductive wireless power transfer links without the limitations imposed by numerical methods.
Synergy between deltamethrin and prochloraz in bees: Modeling approach (1996)

Abstract The metabolic hypothesis proposes that the fungicide prochlorazacts synergistically on deltamethrin by inhibiting oxidative metabolism of deltamethrin. The limits of validity of this hypothesis were tested using a pharmacokinetic box model. Experimental work showed that bee mortalities were higher after 2 h in groups sprayed with deltamethrin at 0.25 g-ha−1 in the presence of prochloraz (25 g-ha−1) than in those sprayed at 1 g-ha−1 with deltamethrin alone. We defined t as the time at which the internal concentration of deltamethrin is the same for both treatments. For the metabolic hypothesis to be consistent with experimental results, t must be less than 2 h. Given t &lt; 2 h, the model was used to study pharmacokinetic parameter values. Published parameter values were inconsistent with simulation results because in all cases t was greater than 2 h. Consequently, the synergy between prochloraz and deltamethrin cannot be explained by the inhibition of oxidative metabolism.
Mobile Location Method of Radio Wave Emission Sources (2009)

This paper deals with the new location method of radio wave sources, based on the Doppler efiect. In this method, position of the radio signal source is calculated on the basis of momentary frequency measurements taken by mobile receiver. Theoretical and simulating analysis of the presented methodology was made before empirical veriflcation process was intro- duced. General outline of the method on the basis of the Doppler efiect and preliminary empirical veriflcation results are presented. 1. INTRODUCTION Over that last decade, the emerging location service of electromagnetic waves sources has found numerous applications in the commercial as well as the military radio systems. In this paper, we concentrate on location service of a subscriber in radio communication networks. Several methods for subscriber location in radio communication nets have been already presented like (1) ¥ (5): access station identiflcation | so-called Cell ID or Cell of Origin (CoO), Angle of Arrival (AoA), Time of Arrival (ToA), Time Difierence of Arrival (TDoA), Received Signal Strength (RSS), Global Positioning System (GPS). Each of foregoing methods have some advantages and some disadvantages too. Disadvantages of foregoing methods make di-cult for practical utilization. These factors have motivated the development of new location methods based on analytic description of the Doppler efiect. The analytic description of this problem (6) makes it possible to calculate exactly the value of the received signal parameters especially frequency ofiset. In this paper, the theoretical basis as well as empirical veriflcation of frequency ofiset measurement is described. 2. ANALYTIC DESCRIPTION OF THE DOPPLER EFFECT
Possible involvement of nitric oxide in estrogen-induced uterine edema in the immature rat. (1993)

We examined whether nitric oxide mediates estrogen-induced uterine edema in the immature rat. Immature Wistar rats (19-21 days) received estradiol-17 beta (E2) in a single sc dose of 10 micrograms/animal and 6 h later the animals were sacrificed and the changes in uterine wet and dry weights were determined. E2 treatment caused a 93% increase in uterine wet weight (control, N = 6, 39.88 +/- 3.2 mg; E2 treated, N = 6, 76.8 +/- 4.9 mg), but not in dry weight, suggesting that it induces uterine edema. Pretreatment with L-nitroarginine methyl ester (L-NAME), a competitive antagonist of nitric oxide synthetase, at doses of 10 and 20 mg/kg, ip, caused a dose-related reduction (59 and 86%) in the uterine wet weight increase induced by E2. Furthermore, L-arginine (300-600 mg/kg, sc), the nitric oxide precursor, was able to reverse L-NAME (20 mg/kg)-induced decreases in uterine weight by 47 and 62%, respectively. The results suggest that nitric oxide is the principal mediator involved in estrogen-induced uterine edema in the immature rat.
Secured Framework for IoT Using Blockchain (2019)

Internet of Things (IoT) gained a great focus in recent years due to its importance in humans' everyday life. IoT applications appear in several domains for human welfare. The need for a powerful and scalable security framework is the main focus for the current research. Blockchain (BC) is a distributed write-only ledger that eliminates the need for third parity to secure and verify transactions between peers. Though BC is considered the most powerful technique for securing transactions between IoT devices, these devices, unfortunately, cannot act as peers in BC because of its limited processing and storage. In this work, Blockchain is utilized in deploying a security framework for IoT monitoring applications. The proposed framework comprises clients (who query IoT devices), device gateways, and an administrator. IoT devices access BC through gateways. These gateways are assumed to be resource-rich and can perform mining tasks. To that end, Ethereum Blockchain is utilized in addition to Ethereum Smart contracts for enforcing a set of rules defined by the system administrator.
A New Ferrite Isolator (1956)

A new ferrite isolator is described, which uses a helical transmission line. The main advantage of the new isolator, as compared to other isolators, is that no externally applied magnetic field is required. This has been achieved by using closed rings of soft ferrites with a square-loop magnetization curve. Although designed primarily for use in traveling-wave tubes, the new isolator should also find other applications. By suitable modifications, it can be used as an isolator, switch, or modulator with helical as well as hallow waveguide and coaxial lines. The best ratio of backward-loss to forward-loss in decibels obtained with the new isolator is 25:1 at 6500 mc, with a ratio better than 15:1 over a 25 per cent frequency band. Ratios of 100:1 were measured when a small external magnetic field was applied. Switching times of less than a microsecond are feasible.
Tumour necrosis factor-α gene expression and production in human umbilical arterial endothelial cells (2000)

Endothelial cells act as an interface between the blood and tissues, and are known to be involved in inflammatory processes. These cells are responsive to and produce different cytokines. Tumour necrosis factor-α (TNF-α) not only is one of the most important inflammatory peptides, but also can be induced by lipopolysaccharide (LPS). The focus of the present study was on TNF-α gene expression and production in human umbilical arterial endothelial cells (HUAEC), including the kinetics of this process. Interleukin-1α (IL-1α), LPS and TNF-α, which are all known to be elevated in septic shock, were used as stimulators at concentrations commonly found in patients with sepsis. Through the use of reverse transcriptase/PCR, immunohistochemical reactions and ELISA techniques, we showed that, in HUAEC, all three stimuli were able to induce gene expression and production of TNF-α. Furthermore, this induction by IL-1α, LPS and TNF-α occurred in a time- and concentration-dependent manner in these cells. TNF-α expression and production was induced by all three agents at concentrations commonly found in patients with sepsis. TNF-α mRNA was observed within 30 min regardless of the stimulus used, but the levels peaked at different times. Since it is well established that TNF-α is able to induce the synthesis of IL-1α in endothelial cells and, as shown in the present study, TNF-α and IL-1α are themselves able to induce the synthesis of TNF-α in endothelial cells, an autocrine potentiation of cytokine release in sepsis can be proposed. This situation could lead to a locally acting ‘vicious cycle’ which, when considered in addition to the known ability of TNF-α to induce apoptosis, could mean that various organs will be damaged, a condition associated with sepsis. Thus these results provide further evidence for the important role played by the endothelium in inflammation.
The arbitrary Boolean publish/subscribe model (2007)

In this paper, we present BoP, a content-based publish/subscribe system for arbitrary Boolean subscriptions and advertisements. BoP targets at the time and space-efficient matching of event messages using the wide-spread attribute-value pair event model.
Oral contraceptives and lipoprotein metabolism. (1986)

The extensive literature on the effects of oral contraceptives on plasma lipoproteins is reviewed. The interpretation of various studies has been confounded by the diversity of contraceptive formulations and by the fact that estrogen and progestogen components in a given preparation may neutralize or potentiate each other's effects. Recent studies on contraceptive estrogens and progestogens administered alone have helped to reveal some of the mechanisms behind oral-contraceptive-induced changes in plasma lipoproteins. The introduction of modern low-dose oral contraceptives has resulted in a reduction in adverse effects on plasma lipoproteins and has decreased concern about the risk of arterial disease.
Low bit rate multi-pulse speech coder with natural speech quality (2005)

This paper proposes a new low bit-rate speech coding algorithm based on a multi-pulse excitation technique. In the algorithm, an excitation signal in a frame, which includes several pitch periods, is effectively represented by pulses during only one pitch period. Excitation signal for other pitch periods in the frame is reproduced by interpolating the pulses. From several experiments to evaluate the new coder, it is found that the new coder produces natural-sounding speech at low bit rates. Subjective evaluation results show that the new coder at 4.8kb/s attains good speech quality which is almost equivalent to that for 6bit/sample/µ-law PCM.
Neuropsychological effects of amphetamine may correlate with personality characteristics. (1995)

Although the stimulant properties of amphetamine are well established, its effects on cognitive test performance in unfatigued normal adults are poorly documented. Seventeen healthy individuals received a single oral dose of dextroamphetamine (0.25 mg/kg) in a double-blind, placebo-controlled, crossover study. Neurocognitive tests, motor tests, and behavioral observations were performed. Personality information, based on the Tridimensional Personality Questionnaire (TPQ) was also gathered to explore a relationship between personality factors and response to the stimulant. With the exception of two measures of reaction time, there were no overall changes in performance on measures of memory or other cognitive functions. There was decreased reaction time on the continuous performance task (CPT) and increased accuracy of performance under minimal delay conditions in the spatial delay response task while subjects were receiving amphetamine. In addition, the novelty-seeking subscale was found to correlate with a measure of verbal memory. Individuals with higher scores on the novelty-seeking scale deteriorated under amphetamine, while those who had lower scores improved. These results suggest that some cognitive abilities of persons who may have relatively high dopaminergic tone are disrupted by amphetamine, while those with relatively low dopaminergic tone may have their performance enhanced.
Development of high-strength chromium-molybdenum rail steel with improved weldability (1978)

Chromium-molybdenum (Cr-Mo) steel rails have been in trial service since 1975, and favorable reports have been received from all test locations. These Cr-Mo rails, containing nominally 0.75% C, 0.85% Mn, 0.75% Cr, and 0.18% Mo, exhibit life expectancy equal to that of head-hardened and fully heat-treated rails. Rails of this composition require a special flash-butt welding cycle to delay the cooling rate of the weld to provide a uniform heat-affected zone microstructure. In this study, the Cr-Mo rail steel composition was modified by reducing the manganese and chromium contents while maintaining the same as-rolled hardness. The heating and cooling cycles used for making conventional flash-butt welds in carbon-steel rails were applied to the modified Cr-Mo steels. It was found that a 0.75% C, 0.60% Mn, 0.60% Cr and 0.21% Mo steel has heat-affected zones which are virtually martensite-free under the conventional flash-butt welding conditions. This lean Cr-Mo rail steel composition appears to be well-suited for heavy duty rail production.
Portable communication aid for deaf-blind people (2001)

The development of a portable communication aid, which allows deaf-blind people to communicate with others without the help of an assistant, is reviewed. The system comprises two major units: one for deaf-blind people and the other for sighted people. A deaf-blind person can send messages by typing on a Braille terminal and the messages will be converted to Mandarin phonetic symbols, which are then displayed on an LCD display to be read by a sighted partner. Then the sighted partner can send messages back by typing on a simple keyboard and the messages will be displayed on a Braille display to be `read' by the blind-deaf person. The aid has been designed to be effective, reliable and inexpensive. Some experimental results are reported to demonstrate the applicability of the aid.
A Glimm-Effros dichotomy for Borel equivalence relations (1990)

A basic dichotomy concerning the structure of the orbit space of a transformation group has been discovered by Glimm [G12] in the locally compact group action case and extended by Effros [E 1, E2] in the Polish group action\ncase when additionally the induced equivalence relation is Fσ. It is the purpose of this paper to extend the Glimm-Effros dichotomy to the very general context of an arbitrary Borel equivalence relation (not even necessarily induced by a group action). Despite the totally classical descriptive set-theoretic nature of our result, our proof requires the employment of methods of effective descriptive\nset theory and thus ultimately makes crucial use of computability (or recursion) theory on the integers.\n
OF THE KINETICS OF EPOXY RESIN HARDENING BY A METHOD WHICH EXCLUDES THEIR REACTION WITH THE MATERIAL OF THE CONTAINER (1974)

In the method proposed a weighed quantity of epoxy resin, mixed with a known amount of hardener, is placed in the container with potassium bromide windows, a sketch of which is shown in Fig. 1. A distinctive feature of the container is the fact that its windows are protected by a film of polyfluoroethylene. It is known that polyfluoroethyleue resin is almost the only material which does not react with the hardening epoxy resin and does not adhere to it. The film of polyfluoroethylene is 5 ~ thick. Such a film absorbs infrared radiation over the small range 1100-1300 cm -1 (C-F valency bond vibration), which does not prevent high quality spectra being obtained. In the absorption range the band most sensitive to changes of hardening is that of the epoxy group at v = 917 cm -1 [3], the transmittance of the two films together being 90%. Before placing the sample in the container the film is tightly stretched over the windows by means of the metal collars. In order to eliminate polarization effects on the J
Relationship between Quality Control and Customer Satisfaction (2021)

The use of Total Quality Management (TQM) in a company or organization is one of the actions taken by a company or organization to achieve customer satisfaction. This is usually done by the company by adding quality to the internal company. If the internal can be well, it is expected that the external will also be good. In its aim Total Quality Management (TQM) has a long term, Total Quality Management (TQM) focuses on quality, based on the participation of all its members. Total Quality Management (TQM) uses effective strategies, data and communication to integrate quality discipline into the culture and activities of the company. The basic philosophy of Total Quality Management (TQM) is as an effect of customer satisfaction, a company or organization can experience success. Total Quality Management (TQM) can be widely used in manufacturing, education, government and service industries. So Total Quality Management (TQM) is used by companies to improve internal company in customer satisfaction.
Low-voltage pipelined ADC using opamp-reset switching technique (2002)

A low-voltage opamp-reset switching technique (ORST) which avoids clock boosting/bootstrapping, switched-opamp, and threshold voltage scaling is presented. The switching technique is applied to the design of a 10-bit 25 MSPS pipelined ADC. The prototype ADC demonstrates 55 dB SNR, 55 dB SFDR, and 48 dB SNDR at 1.4 V power supply. The ADC operates down to 1.3 V power supply (|V/sub TH,P/|=0-9 V) with 5 dB degradation in performance. Maximum operating frequency is 32 MSPS. The ORST is fully compatible with future low-voltage submicron CMOS processes.
A Comparison of Machine Learning Approaches to Housing Value Estimation (2019)

Housing value estimation relies on hedonic pricing models whereby price is determined by both internal characteristics (bedrooms, bathrooms, living area, etc.) as well as external characteristics (neighboring houses, ZIP code, etc.). While classical parametric models based on linear regression analysis have been well studied in this application, the theory of hedonic prices places no restrictions on the hedonic price functional form, and hence, more recent research has attempted to apply machine learning (ML) approaches such as K-Nearest Neighbors and Support Vector Machine Regression (SVR). Many of these ML methods are employed on the basis of their flexibility in terms of making less assumptions on the shape or distribution of the data. ML models are therefore used with the expectation of higher accuracy on predicting the final sale price of a house. In this study, we consider the combination of various pre-processing procedures and candidate models on a historical data set of house sales in King County, Washington. Different measures of accuracy are considered in interpreting model performance. The results suggest that while machine learning algorithms like SVR achieve top performance as measured by the adjusted R 2 , classical parametric models can also achieve out-of-sample generalization nearing that of the more sophisticated ML models, with faster training times, no need for feature scaling and more easily interpreted parameters.
Diagnosis and treatment of the invertign papilloma of the nasal cavity and sinus (2001)

Objective:To better recognize the inverting papilloma of the nasal cavity and sinus and make correct diagnosis and treat it efficiently.Methods:22 patients with inverting papilloma of the nasal cavity and sinus from Jannuary 1989 to Decetmber 1999 were revievecl,Summarizing clinical manifestion and treatment.Results:Follow-up one to ten years average five years eight months two cases in the seventeen patients who underwent surgery and radiotherapy and two in five patients who underwent simple surgery recurred.Conclusion:Hateral rhinotomy or nasal endoscope surgery and adjurouht vadiotherapy after operation play an import role in treatment of inverting papilloma of the nasal cavity and sinus and rudecing recurrent rate.
STUDIES ON HEADACHE (1950)

A LARGE body of clinical and experimental studies have illuminated some of the bodily changes which take place during an attack of migraine. 1 The pain of this headache is known to arise from dilated arteries either inside or outside the head or both. Certain of the preheadache phenomena have been studied and have been shown to be the result of cerebral vasoconstriction. It is the purpose of this paper to describe further experiments which have been carried out in an attempt to clarify the nature of the vasoconstrictor and vasodilator phases of the attack. EFFECTS OF CARBON DIOXIDE-OXYGEN MIXTURE GIVEN DURING PREHEADACHE (VASOCONSTRICTOR) STAGE Certain of the preheadache phenomena have been shown to be the result of vasoconstriction in strategic areas of the brain or retina. A physician who had loss of segments of his visual fields prior to headache was able transiently to restore his vision to normal
Digitalis: Neurally Mediated Arrhythmogenic and Coronary Vasoconstrictor Properties (1985)

Studies of digitalis have revealed an appreciable role of the autonomic nervous system in the modulation of the cardiovascular toxicity of digitalis. Neuraxis transection experiments and studies using digitalis compounds that fail to enter the central nervous system suggest that centers located in the floor of the fourth cerebral ventricle play a substantial part in the neural arrhythmogenic effects of the digitalis glycosides. Electrical stimulation of the area postrema in partially digitalized animals, not otherwise manifesting ventricular arrhythmias, elicits ventricular tachycardia. Neuraxis transection experiments and studies with a charged digitalis derivative also suggest localization of the coronary vasoconstrictive properties of digitalis to the area postrema. The results suggest that this region of the brainstem is sensitive to a neurally active substance, digitalis, causing peripheral sympathetic effects of considerable consequence.
The Aldrich library of NMR spectra (1974)

The Aldrich library of NMR spectra , The Aldrich library of NMR spectra , کتابخانه دیجیتال جندی شاپور اهواز