post

The Color Brown

The Color Brown

 

Let’s face it – if our customers agree blue, yellow or red eyebrows, life would be much simpler. No problem, Mrs. Jones, who has only the red of her eyebrows. It will complement the color of the bloodshot eyes, which seem to have all the time and’ll last much longer than the brown color that was used because it is a primary color and the primary colors have a long life. Or, how about a nice yellow color that matches the appearance of jaundice on your skin, Mrs. Smith? No problem. The yellow color disappears faster than red or blue, but for you, yellow eyebrow will be the sun in your life for a long time. Or, we could make a beautiful blue front for you, Mrs. Doe. Now there is a forehead color that is likely to make in his grave, and we always try to harmonize the frontal colors with tonal attributes of the skin, the blue will highlight the dark circles under the eyes like no other color. It’s really beautiful.

Okay, we had our stupid moment and I hope it made you smile. You have to find humor in the dilemma of brown or certainly crazy looking for it. Now, to achieve the true intention of this article is to understand and how to stay away from brown pigments. Most customers want brown eyebrow tones, whether it’s a blonde (lighter shades of brown), light brown (darker than blond), a medium brown or dark brown (some bordering black look.) There are some, but only a few, clients requesting black eyebrows and it is seldom recommended to use black eyebrow procedure properly, unless a black or dark color alone will appear after healing a very dark skin tone. It is rare, but we do not want to operate on the skin tones with absolute respect and customer demands. The dark brown pigments serve the customers eyebrows much better than a straight black because the black law can erase additional blue or gray tones. Correcting the most requested color for eyebrows is one that has gone to an orange, gray or blue hue. It rarely looks green (but not impossible) because of the heat factor of the blood flow in the forehead area and sometimes you will see a pinkish or missing correction eyebrow.

Impact of needle configuration:
When choosing a brown pigment for your customer, as you have heard many times, you have to use your experience and move quickly in your mind the impact of the customer’s skin tone will be in relation to the pigment put on the skin. The pigment plus tone of the skin is equal to a different aspect of the pigment that has placed on the skin. Other factors also influence the neat brown color.

Elizabeth Finch Howell introduced the concept much more that the setting of the needle is small for procedural eyebrows, more ashes (ashes and is always cooler and darker), the healing process will appear. Why? Due to the small needles intersecting the skin more effectively and generally place the deepest pigment. Use of larger needle configurations have less cutting effect and, for lack of a better word, make more or less pigment on the skin, placing the pigment slightly closer to the light and away the direct relationship with blood flow (Blue.) Pigment that stays closest to the surface of the skin will reflect more light and appear less cold than the pigment that lies deepest in the skin.

In theory, if a pin number 1 or 3 is used on the right side of the eyebrow procedure for a client and a number of 5 or 8 on the left side when the procedure is cured, it is possible to see that the right shivering is slightly More cold (ash) and therefore darker than the left. So just before we know whether our choice as a technician is using smaller needle configurations, and if the client wants a hot eyebrow, he will receive compensation for the use of small needles by selecting a slightly higher pigment to the eyebrows .

post

An Introduction to Robot Operating System (ROS)

An Introduction to Robot Operating System (ROS)

 

Developing a robot with a computer brain requires a lot of software tools from the secondary computer software controllers, third-party tools for computer vision and simulation tools. ROS includes all the tools and manages the way to develop a code for your robot.
Instead of reinventing the wheel every time, some admins can help by putting together all these tools and managing the way they develop the code to their robot. ROS (Robot Operating System) is one of these milestones. This is a special framework originally developed by the Stanford IA Laboratory in 2007 for the development of robots. The Open Source Robotic Foundation now maintains ROS.

The ROS concept goes far beyond a border. ROS is an operating system, since it provides all the services offered by other operating systems, such as the acquisition of equipment, control of low level devices, the execution of the most used functions, the passage of messages between processes, and the Package management. Although ROS is still a part that is not an independent operating system or RTOS and is not the only framework for robots, it seems to be widely adopted and have a large community of developers.

ROS can be installed on a single-board computer (SBC) like Raspberry Pi-level and up with Ubuntu / Debian distribution. However, other platforms are supported experimentally or by the community.

 

ROS Logo

 

An overview of how ROS works
Before we delve into and start playing with ROS, we need to see the overall picture of the system.

In general, the ERO is composed of code and tools that help your project code to perform the required work, including the infrastructure to run it, since the messages that pass between processes.

ROS is designed to be a flexible coupling system in which a process is called a node and each node must be responsible for a task. Nodes communicate with each other using messages through logical channels called themes. Each node can send or receive data from the other node using the publication / subscription model. Let’s see this in action later.

The main purpose of ROS is to support the reuse of code in research and development in robotics so that you can find an integrated package system. Again, remember that ROS is not an operating system, a library or RTOS. It is a framework using the concept of an operating system.

post

An Introduction to Oscilloscope Probes

An Introduction to Oscilloscope Probes

 

Speaking oscilloscope probes in general terms …
An oscilloscope (aka scope or O-scope) is a very powerful tool – and probably the most commonly used material – for electrical engineers or anyone who wants to measure the electrical properties of electronic devices. However, it takes more than an oscilloscope; At least one probe is also necessary.

When selecting a sensor for the O-Scope, it is best to check the manual for the O-Scope to see which type of probe is recommended. If the manual is nowhere (which is often the case in the real world), visit the oscilloscope manufacturer’s website for recommendations.

The following information should also be taken into account when choosing probes:

Make sure that the sensor input connector matches the connector of your range.
Most oscilloscopes have BNC connectors; SMA is another possibility. See Figures 1 and 2 below.
Choose a probe with the input resistance and the ability to match the input resistance and the capability of its range. Generally, it is desirable that the probe has the least influence on the measurement loop – this is called the charge effect. Strength and compatibility capability are essential to ensure proper signal transfer and signal accuracy.

 

Most modern areas allow you to select an input resistance of 50 Ω or 1 M. For a general test, a 1 m input is commonly used. A 50 Ω input resistor is used for high speed (microwave feed) signals, The propagation delays in the logic circuits and impedance tests of printed circuit boards.

Unlike standard input resistance with a range of 1 M or 50 Ω, the range of an input capacity may vary depending on the range of the range and other design features. That being said, a common input capacity for many 1 MW tranches is 20 pf. However, this value can range from 100 pF to 5 pF. The best approach, to match a probe with a scope, is to first select a probe whose capability is within range of its range, then adjust the probe’s ability by adjusting its compensation network by Condenser section of the probe, if possible. This process is known as your name probe compensation.

 

How many and what types of probes do you need?
The number of probes and the type of sensors you need depend on the current situation. For example, if only individual DC voltage measurements are required, a 1 M passive voltage probe would be required at one end. However, if you set the time to install and maintain high-speed signals, such as NAND data rows on a hard disk (SSD), you have to use two high-speed active differential probes. See Figure 4 for an example of this type of measurements.

post

At. Considerations of the budget, supply and equipment

At. Considerations of the budget, supply and equipment

 

Having good cards is important, but you can find that A. T. is usually well marked. Because the track is changed from time to time, one must learn to recognize the distinctive white plate that marks the path: a vertical rectangle painting two inches by six inches in a prominent place along the track. (Two shots are sometimes used when the path changes direction.) When the fire differs from your card, follow the torches. Above the tree, rock cairns are used to mark the route.

Budget: The minimum cost estimate while in progress is one dollar per mile. A precarious budget is $ 3000, although many of those who déchirurent day display and food choice will spend more. ATC considers the cost of transmission between $ 1000 and $ 2000, depending on the amount of equipment and clothing you already own.

Power Planning and Replenishment: these are the nuts of your travel plan, and the details will carry out extensive research. A wealth of information can be found in the guides and online, including ATC pages discussing replenishment strategies. With the exception of Wiltherness 100 Mile Maine, A. T. offer replenishment options approximately every 4 or 5 days. So you have a lot of flexibility to your original plan and change things along the track.

The Philosophy of the Arts: Minimalist hikers will always say that you can go lighter, but you have to decide for yourself where you are in the ultralight ultra-prepared spectrum.

The experience of the gears: The A. T. It is not the place for a traveling girl team. Make trips to become familiar with your team and take courses to make sure your off-piste skills are refined for the challenge.

Differences with the PCT: When you find an ultralight enthusiasm in the PCT, A. T. Hikers, however, adopt this trend. Many also choose to shift a lighter gear from more robust gear in major refueling locations.

Note that although the AT has no deserts or 13,000 foot passes, hikers still need to be aware of water sources (Pennsylvania long periods of drought) and climate-ready (Appalachians in the south and north of New England are prone to snow). Therefore, most A.T hikers do not use ice or traction trails, but many carry trekking poles for added stability.

Finally, because more than half the way passes through the lands where hunting is allowed, A.T hikers should do additional research and add white gold clothing to their list.

List of Appalachian Trail Backpacking Team
Take Precautions: Although brown bears are not found here, the average hiker is likely to find a black bear at some point. The best defense against bears in the field is to prepare and store food properly. The use of traps for bears in shelters that provide a container and in which use is mandatory. If you do not want to use a cartridge for the entire track, hang your food (and something fragrant) wherever you go.
On the track, make noise to alert the bears to your presence and give a bear place to get away if you see one. If the bear does not run away, avoid contact with the eyes and back off slowly. Do not run or the dead, even if the bear did a bluff charge. Firearms Carrying is heavily discouraged. If you are worried, take to take place.

Ticks and Lyme Disease: Lyme disease, though rare, is severe enough to halt the walk. Conceal in areas prone to ticks and the use of effective repellents against ticks. Check frequently and remove them quickly.
Note: Included in this checklist are the ten essential systems in all off-piste trips in navigation; sunscreen; isolation; illumination; First aid articles; lighter; Tools repair kit; The nutrition; hydration; Emergency shelter. For more information, see our ten essentials article.

post

Appalachian Trail Backpacking Gear List

Appalachian Trail Backpacking Gear List

 

The original long-distance track Latina has captured the imagination of adventurers in long lines for decades. First completed in 1937, the Appalachian Trail today (A.T.) passes through 14 states and federal, state and local parks and forests along the Dozens road. Sources differ in the city from end to end, but the Appalachian Conservancy Trail (ATC), the basic organization conducting the course, includes a total of about 2,180 miles.

Most hikers finish the Appalachian Trail in five to seven months, although the disc brackets have completed in two.

If your best adventure experience, we want to help you prepare for the challenge. Our advice is offered by field specialist / REI Knoxville climber, Tim Bird, who crossed in 2014 and has taught courses and host forums to aspire to A. T hikers.

Trail of the Appalachians with backpack List of changes: Print version (PDF)

At. Planning Considerations
Many factors influence the planning and preparation of equipment, including the time of year when you start your trip, you can go to the trip and the time it takes to finish the track.

Land: The A. T. Cope through a wild wilderness and through more than 500 public thoroughfares. The land spreads to forest roads precipitated interference.

Climate: The conditions for walkers range from the possibility of snow fleets in the spring and autumn in the sweltering heat of summer.

Route Planning: The vast majority of hikers traveling from south to north, from Springer Mountain in Georgia, begin between the end of February and mid-April. Avoiding snow-covered north in the early spring is one of the reasons, but culminating the trip to the top of Mount Katahdin in Baxter State Park in Maine is a great motivator.

The north-south route begins with a grueling climb up Mount Katahdin, where the road may be closed by snow until the end of June. Black flies and swollen streams welcome you at the beginning, while snow in the South Appalachians is often expected to end.

Another strategy is to start from the middle and make the track into sections, but not continuously in one direction. This approach allows you to enjoy one of the first and without passion and without snow. (You need a travel plan to connect the sections and, unless you can not jump sections several times, means giving the highest point of Mount Katahdin).

Timing Considerations: Elite athletes have made the full trip in 54 days, but the average is around six months (preceded by about 8 to 12 months of preparation).

Differences in mileage and deferral days of daily duration add up, finally determine if it is completed in 5 or 7 months. The gods of hiking – evoking blizzards, blisters and other evidence of their resolution – will also have their opinion.

His plan is an initial projection: making thousands of miles through the desert for many months is an unpredictable business. Check ATC track conditions and the closing page before exiting and when accessing the Internet. Talk to the hikers on the way. Prepare emergency plans in advance and evaluate conditions throughout the trip.

At. Licenses and rights
No trekking permit is required: unlike the Pacific Crest Trail, no permit is required for the same trail. Given the increasing popularity of hiking and A.T, this could change in the future. ATC offers the voluntary enrollment page to help walkers choose less congested routes and to collect data for trail preservation.

It is necessary to allow the national park: Shenandoah National Park and the Great Smoky Mountains National Park require permits for off-piste A. T. For hikers. The license and clearance page ATC fees notes and provides links to the license page of each park.

Additional costs and reservations: Some national forests and state parks along the trail require camping fees and require reservations. The license page and the ATC settlement (listed above) contain the latest details.

post

Hurdles Teaching Progression

Hurdles Teaching Progression

 

The methods of creating the main leg

1. Piller fired.
2. Continue forward until you deactivate, force her to take a step forward.
3. The trainer gives a slight push through the back, which requires the athlete to move forward.
4. hands Knees raised by the chest.
5. Run the barriers (such as banana pliometer Hurdles electric or smart fencing).
Development of the leg

Go to the left of the foot – foot in front and to the left of a low energy consumption obstacle or a banana pass.
The right leg – standing in front and right side of a low power obstacle or a banana pass.

– Hands on hips, foot on banana step and power; Unleash the leg on the stage of the banana energy barrier.

– Hands in front, walk to the obstacle of bananas and energy; Unleash the leg on the stage of the banana energy barrier.

– The arms move in unison to the steps, walk towards the banana obstacle and power; Unleash the leg on the stage of the banana energy barrier.
Key points:
– The knee of the leg of the track has to be lifted under the arm.
– The arm stops backwards because the track leg overcomes the banana pass / energy barrier.
– Jog in bananas step / power; Unleash the leg on the stage of the banana energy barrier.

Repeat the complete sequence by moving to a larger banana step, or set slightly higher power constraints of each set.
Development of the lead leg

1. High walk on your knees, with your hands in front of the chest, raising the front leg.
2. High walk on knees, hands in front of chest, lifting single leg forward and step through a small step with banana / low power
3. Large knee walking with two legs, hands on chest.
4. The high knee running with both legs, hands through the chest, go in a small no banana / a of low power obstacles.
5. Knee high, hands in front of chest, go in a small stage on the banana / a low power obstacle with the front leg.
6. Normal knee course will exceed the small banana pitch of low power obstacles with a forward leg.
7. Repeat the complete sequence on the change to a larger banana step or by setting the highest power of each obstacle together.
Leg and leg development

Attach a barrier to feed 27 “on the leg side of the runway.
Place a 5 “banana on the side of the main leg.

– Hands on hips: barriers to walk; Clear leg advantage in a small stage and a banana leg trail in a higher energy barrier.
– Hands in front: barriers to walk; Clear leg advantage in a small stage and a banana leg trail in a higher energy barrier.
– The arms move in unison with the steps: walking over obstacles; Clear leg advantage in a small stage and a banana leg trail in a higher energy barrier. Repeat drill for exercise.

Repeat the complete sequence for several series, gradually increasing the height of the obstacle of the front leg until it is paired with the barrier leg of the route.

Repeat any sequence using two or three obstacles.
Teaching of reactivation patterns

Set the relay “shuttle obstacle” with obstacles at the same distance, but from all different heights. (Do not worry about the technique of release or procedure between obstacles).
– It is very good to do if we deal with a large group of fences

Place the pairs of small banana steps 3 ‘- 6’ Gap (side to side). Start with 3-4 sets of banana steps and gradually increase to 10 sets of banana steps. Have 5 meters between each pair of obstacles. Ask the athletes to run next to each other by taking off small steps of banana while holding three steps between each step of the banana.

Replace the small steps of bananas by stages of the main banana or energy constraints defined in a low position. Repeat.

Gradually, as the athlete becomes more skilful, the height of obstacle power gradually moves.

Repeat the whole procedure to move the distance between pairs of obstacles to 6 meters, and 7 meters, etc., until the appropriate distance between obstacles.
Distances obstacles

post

Hurdles Training – The Lead Leg

Hurdles Training – The Lead Leg

 

A discussion of the main leg cannot be initiated at the first obstacle. It must start at the starting grid. For an 8-step approach on the high fences, which is the normal method for most men and women who have obstacles, including elite class and words, the main leg will be in the hind block leg.
The attack on the front leg begins with a high knee action and with the foot “dorsal arrow” (toe to knee). This action comes from the flexor of the hip and groin (quads). When driving the knee in the obstacle, the foot should always remain behind the knee. A blocked knee in the obstacle occurs in the riding with the foot, which causes a jump effect
And decline. If the knee is held in a locked position during obstacle disengagement, delayed landing result.
Some obstacles, depending on their size and speed, take more than eight steps for the first obstacle or more than three obstacles. Some are going to be closer to the obstacle with their normal pace. This can cause problems in the future as they will do everything possible to get your leg track over the barrier (ie to propel your leg
Outside the obstacle or bend the knee inside). This habit stays with them once they get stronger and faster, and begin to take steps 8 to 1 obstacle or 3 steps between obstacles.
The knee should drive through the obstacle in a slightly upright position to make a cut and an effective and quick landing. The front leg should be lifted and expanded, upper and lower right, or Hurdler be drawn above the ground. At the same time, the front leg is raised, the front arm or the opposing arm extends forward. There is that led to the obstacle and do not cross the midline of the body, as this tends to twist the upper body, resulting in a loss of balance and time. When the foot of the tripod leg is in front of the obstacle and begins to fall, the descent phase begins. A strong flexor of the knee (hamstrings and calf tendons) is essential for rapid cutting of the lead leg. As and when the runway foot ahead, the equal and opposite reaction is the backward action of the lead arm. If the shoulders are square throughout the flight, these two reactions must be equal. As the legs have more mass than the arm, the arm should be wider than the leg to counteract its reaction. This action is complete when the main leg touches the ground.
The towing foot should be placed in front of the body (6 to 12 inches) at the time of impact with the ground. The ankle should be strong to keep the landing of great athletes and prevent the “relax” (body collapse to the track).
Lead drills

All exercises should be done with the right and left legs. This not only allows the muscles to be in balance, but teaches athletes to deal with both legs.
Walking, jumping, running a broken leg
objective:
Serve hot before driving obstacles and develop a good front leg action.
The description:
Start with 3 to 5 spaced obstacles at a regular obstacle distance. Use a height or height of 30 “from the starting fences The theathlete approaching obstacles for the advantage match over the edge of the obstacle and the leg of the course is in the open lane adjacent to the barrier. When the foot reaches the top of the obstacle, the front leg must be quickly forced into the track.For drilling, the number of steps between obstacles is usually 5 short, short steps.If the athlete is uncomfortable, ask them They go off the obstacle until they got used to the drilling.
Common mistakes:
1. Stand right straight.
2. swinging the lead leg in or out.
3. Be sure to highlight the action of the arm while working on leg action
4. A jump / step just before the front leg protruding from the ground should be discouraged.
Wall drill to direct
Hurdler is about 1.5 m from the wall. The knee of the front leg is propelled before the feet and the main hands are led to the wall. The hips are kept up and forward during exercise and the athlete must remain on alert.