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1932 articles for “Five dimensional Bianchi type-111 space time” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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The time interval in moving frames can be negative
Abstract: With respect two each other in the moving frame two time interval between and minus the result will be another time interval in moving frame. Therefore In particular case will be, for which the time interval will be negative. Here, is the relativity time, is the rest time interval. This equation is Einstein’s time dilation equation And since, Where, is a time interval in moving frame. This time interval can …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 8, Issue 1, 2019 · pp. 28–31 Read article
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Benefits of Use of Microalgae in Spacecraft
Abstract: In this time of modern science and technology, we need sustainable development, so that we can meet the demand of future generations as well as the present generation. For this reason, scientists are trying to develop such products which have a considerable remark on every research. Consuming algae as a human food became popular over 70 years after it was discovered in 1942. This concept was first implemented in spacecraft …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 14, Issue 1, 2024 · pp. 08–12 Read article
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Mechanical Characteristic Analysis of Five-Layer Carbon-Carbon Composite Material
Abstract: The current study investigates the fabrication and mechanical strength of five-layer carbon-carbon composite. The strong five-layer carbon-carbon composite material with high strength and modulus is made of a raw material called precursors. The polyacrylonitrile (PAN) method is used in the fabrication of carbon fiber. The characteristics of the resulting carbon material depend on the composition and structure of the precursor. A sheet of 50 x 40 cm five-layer carbon-carbon composite …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 405–417 Read article
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Harmonically Varying Moving Load on Time-Dependent Uniform Beam Resting on Pasternak Foundation
Abstract: In this paper, we investigated elastic beam whose properties does not varies with spatial coordinate but constant along the span L of the beam. The moving load considered in this work is harmonically varying moving load with non-classical boundary conditions, time dependent boundary conditions in particular. Also, considered in this work is two parameters foundation which are Winkler and Pasternak foundations. Closed form solutions in plotted form are obtained using …
Published in International Journal of Electro-Mechanics and Material Behaviour · Vol. 3, Issue 2, 2025 · pp. 38–47 Read article
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A Real-Time System for Efficient Laundry Resource Allocation in University Dormitories
Abstract: Adequate management of the available resources in communal places like university dorms is important in improving the convenience of the students, and in providing optimal use of these facilities. This paper describes the design and implementation of a real-time system on efficient allocation of resources when it comes to laundry in a university dormitory. The system also seeks to counter the challenges that are prevalent among students such as long …
Published in International Journal of Advanced Control and System Engineering · Vol. 4, Issue 1, 2026 · pp. 1–10 Read article
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Machine Learning Assisted Timing Violation Prediction in Sub-7nm VLSI Physical Design
Abstract: The continuous scaling of semiconductor technology into the sub-7nm regime has introduced significant challenges in timing closure due to process variability, interconnect delay, power density, and manufacturing uncertainties. Conventional static timing analysis techniques often require extensive computational resources and iterative optimization cycles, resulting in increased design complexity and longer turnaround time. This research proposes a Machine Learning Assisted Timing Violation Prediction framework for sub-7nm VLSI physical design to improve early-stage …
Published in International Journal of VLSI Circuit Design & Technology · Vol. 4, Issue 1, 2026 Read article
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The Estimation of Time-varying Parameters – A Malliavin Calculus Approach
Abstract: The Malliavin derivative of the Malliavin calculus is used to estimate the time-varying amplitudes that appear in the sum of signals or time-varying regression models. A closed form solution is obtained for the estimates of the time-varying amplitudes. The duality principle of the Malliavin calculus is then used to find a numerically tractable expression for the estimates. Given are examples and comparisons to existing methods.
Published in Current Trends in Signal Processing · Vol. 2, Issue 1-3, 2012 · pp. 93–105 Read article
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Simulation of Differential Space Time Block Coding
Abstract: AbstractIn such a coherent system, the underlying assumption is that the channel does not change during one frame of data. Thus, it can also be interpreted as the frame length is chosen such that the path gain change during one frame is negligible. This is basically the quasi-static fading assumption that we have used so far. There is a bandwidth penalty due to the number of transmitted pilot symbols. Of …
Published in Journal of Communication Engineering & Systems · Vol. 6, Issue 1, 2016 · pp. 19–25 Read article
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Material Selection for Mechanical Structures of Space Borne Payloads
Abstract: Space borne payloads consist of several structures to fulfill its functions in space operation. Among these structures, mechanical structure serves as a backbone of whole payload. Hence mechanical structure needs to have very high rigidity and strength. For space applications, materials to be used in mechanical structures need to be selected very carefully. Every gram of added weight increases few liters of fuel consumption and hence costs extra money for …
Published in Journal of Aerospace Engineering & Technology · Vol. 6, Issue 3, 2016 · pp. 24–28 Read article
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A New Method for Continuous Charging of Spacecraft Fuel Elements Under Conditions of Long-term Space Flight
Abstract: Any flight control of a spacecraft (SC) depends on electricity on board. With the help of electricity, all its instruments and equipment (propulsion system, controls, communication systems, instrument complex, heating, etc.) function on board of the spacecraft. The power supply system (PSS) of a spacecraft is a critical system that ensures its life. The main base of the spacecraft power supply system is a system that generates direct electric current. …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 11, Issue 3, 2022 · pp. 25–39 Read article
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Lead Time Reduction in Pipe Manufacturing: An Application of Value Stream Maps and 5S
Abstract: The pipe manufacturing industry has a considerable effect on the economic growth of a country. In this competitive scenario, manufacturing industries receive immense pressure for providing high-quality products at affordable cost, and on-time delivery. This paper aims to reduce lead times in a small-scale pipe industry plant by the application of the Value Stream Mapping (VSM) technique. The products of the plant are Resin Polyvinyl Chloride (RPVC) pipes, RPVC suction …
Published in Journal of Polymer & Composites · Vol. 11, Issue 14, 2023 Read article
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A Novel Secure Cloud Storage Solution: Combining AES-OTP, RSA, and Time-Limited Access Control with Adaptive Key Management
Abstract: The reliance of cloud computing on the data processing and storage structure creates serious security risks. Ensuring availability, security, and integrity of data in cloud settings becomes a challenge for both the individual and the enterprise. This paper will, therefore, introduce a novel Hybrid Cryptographic Framework that combines RSA, One-Time Pad (OTP), and AES as a means of enhancing data security in cloud storage. It employs RSA for secure key …
Published in Current Trends in Signal Processing · Vol. 14, Issue 3, 2024 · pp. 11–20 Read article
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Influence of Inter and Intra-Row Spacing on Hot Pepper (Capsicum Annum L.) Growth,Yield and Yield Component of Under Rain Fed at Guraferda and Gimbo, Southwest Ethiopia
Abstract: Inappropriate plant population density and other limitation factors are among the key reasons for the low hot pepper yield in Ethiopia, including South West Ethiopia. To increase the productivity of hot pepper use of appropriate population spacing is vital. Hence, a field experiment was conducted at Guraferda and Gimbo during the main rainy season to evaluate the response of hot pepper for growth and yield and yield components. A factorial …
Published in International Journal of Trends in Horticulture · Vol. 1, Issue 1, 2024 · pp. 4–9 Read article
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Real-Time Cab Fare and ETA Prediction Using API Integration
Abstract: The exponential proliferation of ride-hailing platforms has necessitated the formulation of sophisticated and highly responsive predictive models for cab fare estimation and estimated time of arrival (ETA) computation. This work elucidates a robust framework leveraging real-time application programming interface (API) integration from Uber and Ola within a Flutter-based ecosystem to enhance predictive analytics. By assimilating real-time geospatial data, dynamic pricing algorithms, and latency-optimized API responses, this study investigates the empirical …
Published in Journal of Computer Technology & Applications · Vol. 16, Issue 2, 2025 · pp. 08–15 Read article
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Diffusion-Based Enhancement of Low-SNR Time- Frequency Signals
Abstract: Traditional enhancing techniques are useless in low signal-to-noise ratio (LSNR) situations because noise drastically interferes with communication signals. Based on an enhanced DiffBIR model, this paper suggests a dual-stage signal improvement approach that combines diffusion with deep learning. By combining the Inception module for multi-scale feature extraction with the Pixel Fusion Attention (PFA) module for significant region highlighting, the model improves signal recovery in the time- frequency domain. Experiments show …
Published in Current Trends in Signal Processing · Vol. 16, Issue 2, 2026 · pp. 15–27 Read article
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Dynamic Analysis of Irregular Building with Box Type Shear Wall at Center under Different Type of Soil
Abstract: Building engineers are being shown to accept high-rise construction due to increase shortage and land cost. The development of high-rise buildings presents many challenges with the type of lateral load. In high-rise buildings getting better efficiency and the high-strength shear wall is an effective solution. The Optimum location of the shear wall depends upon the structural shape of buildings. For irregular structures, inner shear walls provide more strength and durability …
Published in Journal of Construction Engineering, Technology & Management · Vol. 11, Issue 2, 2021 · pp. 37–49 Read article
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Experimental Study on Strength and Setting Time of Concrete After Modifying Workability by Using Molasses as Time Retarding and Plasticizing Agent
Abstract: Molasses is a byproduct recovered from the sugar refining process. Molasses can also be recovered from the paper industries. Here the waste floating on the surface of boiling sugar juice during the process of production of sugar is taken. Sugar content in such molasses slows down the hydration process in cement. This phenomenon increases the setting time of the concrete mix. Among the quantity of water added to concrete without …
Published in Journal of Structural Engineering and Management · Vol. 2, Issue 2, 2015 · pp. 1–5 Read article
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“FORCE-DISPLACEMENT TRADE OFF” OF RCC BUILDING LOCATED AT VARIOUS SEISMIC ZONES AND SITE CONDITION ADOPTING TIME-HISTORY ANALYSIS
Abstract: Earthquake-resistant or aseismic design are considered to protect buildings to some or greater extent from earthquakes. The force-displacement trade off of structures located in various seismic zones are different in nature depending on intensity of earthquake. No structure can be fully immune to damage from earthquake, the vulnerability can be reduced for safety and durability. The force-displacement behavior of a particular structure can be modified to withstand seismic occurrence preventing …
Published in Journal of Structural Engineering and Management · Vol. 10, Issue 1, 2023 · pp. 14–32 Read article
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Time Domain Analysis in an On-chip High Speed RLCG Interconnection Network at 0.18 µm Technology
Abstract: In this model, the time domain waveform is evaluated for calculation of delay time, peak time, settling time, damping ratio and natural frequency for a second order RLCG interconnect network. It can also be used for multiple interconnect systems but for higher order systems it is ignored due to accurate analysis. The model is applied to a single resistance-inductance-capacitance-conductance model which can also be extended to multi-interconnect systems to analyze …
Published in Journal of VLSI Design Tools and Technology · Vol. 1, Issue 1-2-3, 2011 · pp. 57–67 Read article
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Uniform Beam Dynamics Under Exponentially Moving Load on Bi-paeametric Foundation with Time-dependent Boundary Effects
Abstract: This study investigates the problem of a uniform elastic beam subjected to exponentially varying moving load with time dependent boundary conditions. A complex structural dynamic problem that has very significant implications for various applications such as railway systems, bridge structures, industrial machinery will be addressed in this research. A damping term is built into the uniform beam model to give a more realistic picture of the structural behaviour, while the …
Published in Journal of Experimental & Applied Mechanics · Vol. 17, Issue 2, 2026 · pp. 53–64 Read article