Contrast limited adaptive histogram equalization (CLAHE) is used for improve the visibility level of foggy image or video. In this paper we CLAHE enhancement method improving video quality in real time system. Adaptive (AHE) different from normal because AHE use several methods each corresponding to parts and them redistribute lightness value case `Distribution' parameter are define shape which produce better result compare then (AHE). algorithm rayleigh distribution create bell shaped...

Previously demonstrated high-order silicon ring filters typically have bandwidths larger than 100 GHz. Here we demonstrate 1-2 GHz-bandwidth with very high extinction ratios (~50 dB). The waveguides employed to construct these propagation losses of ~0.5 dB/cm. Each a filter is thermally controlled by metal heaters situated on the top ring. With power dissipation ~72 mW, resonance can be tuned one free spectral range, resulting in wavelength-tunable optical filters. Both second-order and...

Abstract Efficiently managing virtual resources in the cloud is crucial for successful recourse utilization. Scheduling a vital technique used to manage Virtual Machines (VMs), enabling placement and migration between hosts located same or different data centers. Effective scheduling not only ensures better server consolidation but also enhances hardware utilization reduces power consumption However, VMs across Wide Area Network (WAN) poses considerable challenges due connectivity issues,...

A novel ring-resonator-based integrated photonic chip with ultrafine frequency resolution, providing programmable, stable, and accurate optical-phase control is demonstrated. The ability to manipulate the optical phase of individual components a signal powerful tool for communications, processing, RF photonics applications. As demonstration power these components, we report their use as programmable spectral-phase encoders (SPEs) decoders wavelength-division-multiplexing (WDM)-compatible...

Wireless sensor networks are without a doubt one of the central issues in current research topics due to harsh environmental conditions which such can be deployed and their unique network characteristics,specifically limited power supply, sensing, processing communication capabilities. Presented with many challenges design that affect data routing, need for fault tolerant routing protocol becomes essential. In this paper, we summarize highlight key ideas existing techniques protocols, survey...

The design of good host overload/underload detection and virtual machine (VM) placement algorithms plays a vital role in assuring the smoothness VM live migration. presence dynamic environment that leads to changing load on VMs motivates us propose Markov prediction model forecast future state host. We algorithm find overutilized/underutilized hosts avoid immediate Moreover, we determine set candidates receive migrated way reduce their migrations near future. evaluate our proposed through...

Abstract There is nothing we spend as much time on in our lives do sleeping, which makes it even more surprising that currently not know why need to sleep. Most of the research addressing this question performed rodents allow for invasive, mechanistic approaches. However, contrast human sleep, have shared and agreed upon standards sleep states rodents. In article, present an overview stages humans a historical perspective development automatic scoring systems Further, highlight specific...

Abstract Ensuring application service availability is a critical aspect of delivering quality cloud computing services. However, placing virtual machines (VMs) on servers to provision these services can present significant challenges, particularly in terms meeting the requirements providers. In this paper, we framework that addresses NP-hard dynamic VM placement problem order optimize paradigm. The modeled as an integer nonlinear programming (INLP) optimization with multiple objectives and...

The performance of filtered analog photonic links, useful in signal processing applications, is analyzed along with techniques for compensation distortion. We analyze the attributes various link configurations and compare coherent-detection links intensity-modulated-direct-detection links. Experimental results on dynamic range nonlinearities using predistortion are presented a coherent link. demonstrate suppression third-order nonlinearity by 20 dB. In addition to supporting operations such...

The heterogeneous nature of workloads running in cloud environments makes future resource usage prediction a complicated problem. Virtual machines can be described five types utilization patterns: steady, trending, seasonal, cyclic, and bursty behavior. Understanding these patterns behaviors enhance management on data centers, especially VM scheduling, power management, server health systems. This paper applies the Facebook Prophet forecast framework Microsoft Azure workload to predict...

High dynamic range is a key requirement in analog applications. In multichannel optical signal processing applications, wideband radio-frequency suffers from distortion both in-channel and out-of-channel signals due to nonlinear modulator behavior. We demonstrate experimentally the compensation of nonlinearities occurring “cross-modulation” with novel predistortion technique using dual-port modulator. Predistortion results suppression by more than 25 dB.

In the rapidly evolving domain of serverless computing, need for efficient and accurate predictive methods function invocation becomes paramount. This study introduces a comprehensive suite innovations to improve predictability efficiency within architectures. By employing multi-output regression models, we perform multi-level analysis patterns across user, application, levels, revealing insights into granular workload behaviors. We rigorously investigate impact windowing techniques...

Recently, there has been a renewed interest in optical code-division multiple access (OCDMA) due to its potential for offering increased levels of security at ultrahigh data rates as well simplifying key networking functions, such replacing (active) wavelength translation with cascaded passive all-optical code (CT). Much the research done this area focused on homogeneous OCDMA networking, where it is assumed that fiber bandwidth used only signals. In contrast other proposed systems, we have...

We present the design and fabrication of thermally-efficient tuning structures integrated into a narrowband reconfigurable radio-frequency (RF)-photonics filter using silicon-on-insulator waveguide optical delay lines. By introducing thermal isolation trenching, we are able to achieve IIR, FIR or arbitrary mixed response with less than 120 mW average power in single RF-photonic unit cell filter.

Containers are recognized for their lightweight and virtualization efficiency, making them a vital element in modern application orchestration. In this context, the scheduler is crucial strategically distributing containers across diverse computing nodes. This paper presents novel two-stage container scheduling solution that addresses node imbalances efficiently deploys containers. The proposed formulates process as an optimization problem, integrating various objective functions constraints...

Wireless mesh networks (WMNs) have emerged recently to extend Internet access and other networking services. WMNs routers provide network the clients functions such as routing, packet forwarding. Bandwidth scarcity is main challenge that limits performance of WMNs. Although considerable research has been conducted on spectrum allocation, management still considered an important open problem. This problem can be solved using cognitive radio technology allows radios intelligently locate free...

With the growing demand for quality-of-service (QoS) aware routing protocol in wireless networks, QoS-based has emerged as an interesting research topic. Quality of service guarantee sensor networks (WSNs) is difficult and more challenging due to fact that available resources sensors various applications running over these have different constraints their nature requirements. In this paper, we present a heuristic neighbor selection mechanism WSNs uses geographic combined with QoS...

Today's wireless networks are characterized by fixed spectrum assignment policy. The limited available and the inefficiency in usage necessitate a new communication paradigm to exploit existing opportunistically. Cognitive radio is for which either network or node changes its transmission reception parameters communicate efficiently avoiding interference with licensed unlicensed users. In this work, fuzzy logic based system management proposed where can share unused depending on some like...

Quality of service guarantees in wireless sensor networks is difficult and more challenging due to the fact that available resources sensors various applications running over these have different constraints their nature requirements. In this paper we present a novel heuristic neighbor selection mechanism WSNs uses geographic routing combined with QoS requirements provide multi-objective (MQoSR) for application The problem providing formulated as link path-based metrics. metrics are...

We demonstrate single-mode collection efficiency enhancement for free space optical systems using a photonic lantern to collect scattered infrared light from diffuse objects at far- and near-field distances. A improvement of ∼8 dB is demonstrated in the region relative standard fiber. The insertion loss properties are also analyzed, an additional penalty observed distances when transmitted beam collimated. can be used coherent detection such as ranging free-space communication with improved...