Consider a fog network consisting of a pool of E cloudlets, some are active and some not, and a set u of N users that are distributed uniformly over the network area. Moreover, user-nodes (UNs)are interested in a set of A tasks, each task has required CPU cycles of k per bit of task data. In the proposed model we focus on the uplink transmission . UNs have computing tasks that arrive following Poisson distribution, hence the task data size will be assumed to follow an exponential distribution with mean $\lambda$. The task that the users have to perform is assumed to $M=k\lambda$ cycles of Cpu cycles. The Cpu capacity of each user device is $c_u$. Additionaly, each cloudlet has $c_b$ of Cpu capacity to serve serve user's offloading requests. …show more content…
\subsection{computing model} the computation of each tash $A$ of a user node can be either performed locally or offloaded to a cloudlet. the total local computing time equal \begin{equation} T_l=\frac{M}{c_u} \end{equation} each task A requested by user u and offloaded to any active cloudlet experience a total computing delay that consist of the task transmission delay $t_r$, and cloudlet computing time as follows \begin{equation} T_c=t_e+t_g+t_r \end{equation} where, $t_r=\frac{L_a}{R_u(t)}$. Moreover, $R_u(t)=\beta\log(1+\frac{P_u}{N_o})$ is the user transmission data rate, and $L_a$ is the length of the user transmission packet. assume a constant transmission rate so $t_r$ is constant, also $t_e$ and $t_g$ are independent, depending on, the following proposition characterizes $T_c$ statistically. \textbf{preposition 1. } the expected value of mean ($\mu$) and variance ($\sigma$) are given by \begin{equation} \begin{align*} \mu&=E[t_e+t_g+t_r]\\ &=E[t_e]+E[t_g]+[t_r]\\ &=\frac{1}{\lambda}+\frac{2(a+b\nu)}{\nu}+t_r \end{align*} \end{equation} and \begin{equation} \begin{align*}
1. Planning Before you want to jump right into planning, you want to meet with your client to talk about the project, you want to obtain certain information so that it can help you learn more about the project and whether or not the project should go ahead. Once you accept doing this project, you want to make sure that the client knows the requirements you’re looking for and whether they will meet your standard. For example, your payment estimates for future stages of the project.
3.3. Frontier molecular orbital The electronic structure of the doped fullerene interacting with glycine compared to pure fullerene C20 has been calculated with density functional theory using the B3LYP/6-31G basis set. The molecular orbital theory, the relative chemical reactivity of a molecular system can be estimated using HOMO and LUMO energies and overlaps of molecular orbital [18-20]. The electronic transition from the HOMO to LUMO are mainly derived from the electron density transfer n orbital to p* orbital.
Our protocol takes two integers decomposed into encrypted bit vectors [a][b] and outputs the greater integer. In this configuration cloud 1 (C1) has the encrypted bit vectors of the integers being compared and cloud 2 (C2) knows the private key. The protocol is as follows in a very concise form. we can say with firm conviction that vector [Y] consist of encrypted zeros at every location except one location which holds the value of encrypted one. This distinct location identifies the first position where vector [a] and [b] differ.
5.1. Generation of initial population Generation of a set of initial random population is the starting point of the evolutionary process. In this study, the each individuals of the initial population are formed by integers from 1 to the number of maximum possible groups (depends upon the maximum machine numbers in a machine cell). In the chromosome, integers indicate that which machine is assigned to which machine cell. For a problem having 5 machines and 7 parts as shown in Table 1, maximum cell size is say three machines.
Intermediate nodes, when overloaded, drop packets and hence the number of dropped packets is the largest compared to the other modes. Mode 1 gives the best performances is due to the fact that the sources distribute their flows on all available paths from the beginning hence reducing the probability of overloaded queues. However, it is observed that mode 3 tries to balance the load of a congested path on the other paths does not succeed in reducing the drop rate when compared to a simpler approach such as mode 2, at least for small network
NOT function is a logical function in Excel. It returns the opposite value of a given logical value in the formula. This function helps to check that one value is equal to another value or not. If we put TRUE in this function it returns False, it we put False then it returns True. We can use either TRUE or FLASE value in this function at a time.
*Q2 part a clear set obs 20 forvalues i=1/50 { set seed `i' gen Fx`i'=uniform() gen x`i'=-4*log(1-Fx`i') } set obs 50 forvalues i=1/50 { egen meana`i'=mean(x`i') } gen meana=. forvalues i=1/50 { replace meana=meana`i' in `i' } *Q2 part b hist meana set obs 50 forvalues i=1/50 { set seed `i' gen Fy`i'=uniform() gen y`i'=-4*log(1-Fy`i') egen meanb`i'=mean(y`i') } gen meanb=. forvalues i=1/50 { replace meanb=meanb`i' in `i' } hist meana, start(2) width(0.5) hist meanb, start(2) width(0.5) * Q2 part c *Note that the mean and standard deviation for this case would be 4 gen LHSA=4-(4/(20^.5)) gen RHSA=4+(4/(20^.5)) gen LHSB=4-(4/(50^.5))
1- A caller contacts a master server, and signals that they would like to establish a call with a responder. 2- The responder receives an encrypted signal, connects to the master server, and indicates that it has received the call signal. 3- If the responder chooses to answer the call, then it is relayed through the closest available relay server.
Having root access on the Huawei Ascend M860 comes with great responsibility. It means that you will have full control over the Ascend smartphone root file system. That same root file system stores your critical system files and if you were to delete any, it could brick your device. As serious as that sounds, you can always backup your device using the internal SD card. Those of you looking to save some more space on the internal memory can connect an external SD card and backup using Titanium backup to that external drive.
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VP networks are the best solution for the company. Because it will improve productivity, extend geographic connectivity and simplify network topology with ensuring security, reliability and scalability. Also, VPN can be very convenient not like other methods e.g. leased lines that can get very expansive. There are two types of VPN: Remote-Access and Site-to-Site.
ssue networks will not replace the more familiar politics of iron triangles (in Washington), but will overlay the once stable political reference points with the new forces that complicate calculations and decrease predictability. He believes that issue networks wield their power due to the fact that they comprise of a large number of participants with quite various degrees of mutual commitment or of dependence on others in their environment, the participants move in and out of these networks almost constantly. 5. Issue networks at work behind the “Border Security, Economic Opportunity, and Immigration Modernization Act”.
• Amazon CloudWatch is a monitoring service for AWS cloud resources and the applications that run on AWS. • CloudWatch is an AWS component that monitors our AWS resources and provides information to users in the form of data and alerts. • Amazon CloudWatch can be used to collect and track metrics, collect and monitor log files, and set alarms. • Amazon CloudWatch can monitor AWS resources such as Amazon EC2 instances, Amazon DynamoDB tables, and Amazon RDS DB instances, as well as custom metrics generated by the applications and services, and any log files the applications generate. • Amazon CloudWatch can also be used to gain system-wide visibility into resource utilization, application performance, and operational health.
Over the past few years, cloud computing has become an integral part of businesses, particularly those that rely on the internet. Now, many firms are no longer struggling with complicated networking and on-premise server rooms. The move has been triggered by the many benefits associated with cloud computing when it comes to reliability, cost-effectiveness, and security (Upadhyay, 2017). The cloud computing industry is mainly dominated by Google and Amazon. This paper argues that Google cloud computing services are better compared to those offered by Amazon in terms of pricing and discount despite them being unavailable in some regions.