.magnitude > maxForce)
            {
                float amountNeeded = maxForce - force.magnitude;
                float amountAdded = forces[i].magnitude;
                float division = amountNeeded / amountAdded;

                force += division * forces[i];

                return force;
            }
            else
                force = newForce;
        }
        return force;
    }


    private Vector2 FlowFieldFollow()
    {
        return Vector2.zero;
    }


    /// <summary>
    /// 计算排斥力
    /// </summary>
    /// <param name="squaredRadius"></param>
    /// <returns></returns>
    private Vector2 Separation(float squaredRadius)
    {
        if (neighbours[0] == null)
            return Vector2.zero;

        Vector2 totalForce = Vector2.zero;

        int neighbourAmount = 0;
        // get avarge push force away from neighbours
        for (int i = 0; i < neighbours.Length; i++)
        {
            if (neighbours[i] == null)
                break;

            Vector2 pushforce = this.Pos - neighbours[i].Pos;
            totalForce += pushforce.normalized * Mathf.Max(0.05f,(squaredRadius - pushforce.magnitude));
            neighbourAmount++;
        }

        totalForce /= neighbourAmount;//neighbours.Count;
        totalForce *= maxForce;

        return totalForce;
    }

    /// <summary>
    /// 凝聚力
    /// </summary>
    /// <returns></returns>
    private Vector2 Cohesion()
    {
        if (neighbours[0] == null)
            return Vector2.zero;

        Vector2 centerOfMass = Pos;

        int neighbourAmount = 0;
        for (int i = 0; i < neighbours.Length; i++)
        {
            if (neighbours[i] == null)
                break;   
            centerOfMass += neighbours[i].Pos;
            neighbourAmount++;
        }
        centerOfMass /= neighbourAmount;

        Vector2 desired = centerOfMass - Pos;
        desired *= (maxMoveSpeed / desired.magnitude);

        Vector2 force = desired - velocity;
        return force * (maxForce / maxMoveSpeed);
    }


    private Vector2 Alignment()
    {
        if (neighbours[0] == null)
            return Vector2.zero;

        // get avarge velocity from neighbours
        Vector2 averageHeading = velocity.normalized;

        int neighbourAmount = 0;
        for (int i = 0; i < neighbours.Length; i++)
        {
            if (neighbours[i] == null)
                break;
                
            averageHeading += neighbours[i].velocity.normalized;
            neighbourAmount++;
        }

        averageHeading /= neighbourAmount;

        Vector2 desired = averageHeading * maxMoveSpeed;

        Vector2 force = desired - velocity;
        return force * (maxForce / maxMoveSpeed);
    }

    public void SetSearchBoxQuad()
    {
        searchQuad.xMin = Pos.x - neighbourRadius;
        searchQuad.yMin = Pos.y - neighbourRadius;
        searchQuad.width = searchQuad.height = neighbourRadius * 2f;
    }

    public void AddNeighbours(int index,Seeker foundNeighbours)
    {
        neighbours[index] = foundNeighbours;
    }
    /// <summary>
    /// 清理邻居
    /// </summary>
    public void ClearNeighbours()
    {
        for (int i = 0; i < neighbours.Length; i++)
            neighbours[i] = null;
    }
    /// <summary>
    /// 判断移动是否合法
    /// </summary>
    /// <param name="seeker"></param>
    public void CheckIfMovementLegit()
    {
        // 先不考虑
    }

}

Nigeria is an oil producing country and crude oil is an important asset to its economy. This research focuses on the analysis of importation and exportation of crude oil products (measured in million barrels). Comparisons between the total importation and exportation were made and descriptive analysis was performed on the crude oil components. Poisson regression was used to establish the relationship between total importation and the importation of the petroleum products under consideration. The results show that Nigeria makes more importation than exportation of these products.Q: Automate SSHing into multiple connections with script I want to ssh through three different servers. First one uses a password, second one doesn't and the third and final one has a different password than the first. Only the first one needs a username.
What I've been doing is something like this:
ssh user@hosname1
- enter password
ssh hostname2
ssh hostname3
-enter new password

Is there any way to automate this with a bash script that I can run? I don't think I can use ssh-key based authentication.

A: Take a look at the "ProxyJump" directive in ssh_config or the -J option on the ssh command. You can use it to jump through multiple servers to get to your final destination
ssh -J user@hostname1,user@hostname2 user@hostname3
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More info >The IR Transducer is installed at the 400 level of the CCGS Amundsen icebreaker on the port side of the ship. The data recording is done on a separate storage module and then transferred to the backup drive. It can record the data at a user-specified time interval. The data file is an ASCII DAT file which can be processed either by the given software or in any graph plotting program. The sensor recorded continuously, 24 hours per day.
The data set has been developed to study the ocean surface temperature in the infrared (IR) region of the electromagnetic spectrum. Radiation in the IR region is heat that is emitted by the Earth's surface, therefore, measurements of IR over ice and open ocean will provide an opportunity to calculate heat fluxes over the oceans. These data can be utilized for a number of studies, such as cyclone forcing, ocean-sea ice-atmosphere coupling, turbulence studies, etc.
Josh Hurst is a software architect at Trava, an Indianapolis company that seeks to protect small and midsize businesses from cyber threats. We’re publishing his thoughts to explore the connection between product teams and engineers so these groups can learn how to foster stronger relationships.
Modern software products are complex systems that are made to look easy to use. And with the advent of no-code and other SaaS tools, it’s easier than ever to develop a new product.
However, software products are often built by teams with competing interests. As a product designer or design leader, you’ll unlock deeper product success by partnering with engineering—and sooner rather than later. Here’s how.
Many engineers focus exclusively on the problem they’re solving but lose sight of their product’s focus: delighting customers. One of your objectives as a design-focused teammate should be to create a team-wide sense of experimentation and curiosity.
Of course, it isn’t possible to listen in to every customer conversation. Instead, try synthesizing what you’re hearing and seeing from users in a weekly summary. If you’re working on a new feature alongside an engineer, try getting “hallway” feedback — an informal usability session — from someone else in the company.
You can also identify other products that have a similar feature. For example, your product’s signup flow may seem intuitive, but how do other products allow their users to sign up? Why did they design that feature in that way? Does engineering have a favorite app that does sign-ups really well? Find examples and dissect those product decisions with the engineers on your team.
Sometimes the feature-at-hand will only get better through direct and thorough feedback. This is where design critiques come into play.
At Trava, we hold regular design critiques where our product designers lay out a new design they’re working on. We intentionally bring in engineers to critique the concept or design. Sometimes the design is a low-fidelity design where we focus on navigational usability. As features take shape, the fidelity increases and we critique the nuances.
Handoffs stink, plain and simple. Engineers tend to focus more on efficiency versus effectiveness, whereas many product designers are more open to twe