The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents the experimental results on electromagnetic behavior of galinstan in liquid metal current limiter in case of rated and short circuit current respectively. For the former, the liquid keeps unstable in the channel like ‘boiling’ when DC current of 1kA passes it and pinches to ignite the arc finally within the channel in several minutes, which is observed by a specially designed test...
The article examines physical principles, conceptual design and fabrication of integrated pressure transducer manufactured by means of microelectronic technology — MEMS and its optimization questions. Spatial distribution of the intrinsic stress caused by the transducer manufacturing and its current heating by supply current was studied by the method of modulation polarimetry.
A novel tilt sensing device using the circular grating moiré effect is proposed in this paper. The relationship of the tilt angle and the features extracted from moiré patterns was investigated through a controlled experiment. A prototype of the circular moiré tilt sensing device was designed and fabricated. Images of the moiré patterns were captured using a high-resolution web camera mounted onto...
Through Silicon Via (TSV) technology is a promising and preferred way to realize the reliable interconnection for 3D IC integration. TSV based 3D IC packaging mainly consists of via formation, via filling, wafer thinning and chip stacking. Copper is one of the most commonly used materials for via filling which is a significant process and challenge in TSV manufacturing processes. However, defects...
This paper establishes a relation model between psychological capital and job burnout by taking psychological contract as an intervening variable, so as to discuss psychological capital's impact on job burnout. According to research results, psychological capital has an evident negative correlation with job burnout; and psychological contract plays a certain mediating role in the relation between...
The article discusses the possibility of generators with air-cooled internal combustion engines to supply both electricity and heat power. Such equipment has usually carburetor gasoline internal combustion engines and can be used in everyday life by professional builders, geologists, military and rescue workers in emergency area and in areas with a lacking infrastructure. The method of experimental...
The paper presents the laboratory cogeneration thermal power plant based on the air-cooled internal combustion engine. The research technique takes into accounts the possibility of electricity and heat supply from the engine cooling system and flue gas heat. The ratio of fuel usage to the plant is shown. A comparison with thermal power plant based on the water-cooled internal combustion engine is...
In this study, the cell behavior in a photovoltaic (PV) module will be investigated by using two electrical characteristics models of mono-crystalline solar cells: (i) the single diode model, and (ii) the double diode model. Several of the used models parameters are not provided by the manufacturer. The identification of internal parameters of the PV cell is performed by means of research algorithms...
This paper provides an analysis of the AC resistances obtained for non-ferrous bimetallic solid conductors. Specifically, the two most common power conductor metals are used: aluminum and copper. The effects on AC resistance for designs of aluminum conductors with copper cores and copper conductors with aluminum cores are examined. The mathematics influencing the increased AC vs DC resistance are...
The promotion method can effectively improve the enterprises' economic efficiency or not, it is a question that all enterprises are concerning. Taking economic value added (EVA) as the evaluation index for the promotion effect, it can really reflect the operating results of enterprises, pay attention to the sustainable development of the company, promote enterprises to implement more effective promotion...
This study investigates the effect of speech rate on speech intelligibility for sentences. The speech rate of sentences is converted by the software Adobe Audition with speech features unchanged. The subjective intelligibility test is applied to evaluate the speech intelligibility. Results show that the speech is absolutely intelligible when the speech rate is below 400 words per minute, but the speech...
The failure and degradation modes of about 5900 crystalline-Si glass/polymer modules fielded for six to 16 years in three different photovoltaic (PV) power plants with different mounting systems under the hot-dry desert climate of Arizona are evaluated. Based on the results of this evaluation, failure mode, effect, and criticality analysis, a statistical reliability tool that uses risk priority number...
The integration of Orthogonal Frequency Division Multiplexing (OFDM) with Radio over Fiber technology has resulted to high data rate at low cost components. This paper investigates the performance of Orthogonal Frequency Division Multiplexing (OFDM) signals through a Wavelength Division Multiplexing system by using Fiber Bragg Grating (FBG) as compensator of dispersion effect over the link. The system...
This research was carried out to estimate the effect of database system application toalleviate chronic obstructive pulmonary disease. The subjects of this paper were 128 patientswho had visited a general hospital which located in Chungnam area. As a result, for gender,the experimental group in a female with 64.1% showed higher than female with 60.9% in thecontrol group. There was a significant difference...
History in use electromagnetic radiation in treating people various health conditions have a long history. Top questions about electromagnetic field effects occurred around the 40's in the same with the development of radar tracking systems. This paper aims to make an analysis of the studies and current research on the effects of electromagnetic fields on people health in the context of conflicting...
In this paper, I research about if the digital textbook has an effect on ability of self-directed learning that many Korean has an interest in. In order to know if the digital textbook has an effect on ability of self-directed learning, I measure the ability of self-directed of students up twice. I found that digital textbook have a effect on ability of selfdirected learning.
The study reported in this paper aims to investigate the integration of the experience effect in audio quality assessment methods. During our subjective tests, we have noticed that a low quality audio signal affect strongly and negatively the listeners' opinion on the next-coming test sequences, even if they are of higher quality. This leads eventually to erroneous data and consequently to a misevaluation...
Since the 21st century, the ecology of communication of cultural heritage has changed significantly thanks in large part to new media technology. For the existing social order and cultural ecology, new media technology has both advantages and disadvantages. The advantages are apparent, but the disadvantages are hidden and less discussed by scientists exclude a few humanists. Here are some of the facts:...
Geocell is a new type of geotechnical material, in order to illustrate its effect in slope reinforcement using anti-slide pile with it, the paper firstly establishes the calculation model of slope reinforcement using anti-slide pile with geocell. According to the elastic foundation beam theory, the paper analyses the force situation of geocell and its anti-sliding force calculation formula in slope...
This study analyzes Controlled Auto-Ignition (CAI) combustion with numerical model which was mainly built by AVL-BOOST coupled with CHEMKIN. The prototype is a single-cylinder engine with Variable Compression Ratio (VCR). By utilizing in-cylinder exhaust gas recirculation (EGR) strategy for combustion control, effect of compression ratio (CR) on engine operating range, gas exchange process and combustion...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.