Blood alcohol content

Blood alcohol content (BAC) or blood alcohol concentration is the concentration of alcohol in blood. It is usually measured as mass per volume. For example, a BAC of 0.02% means 0.2 ‰ (permille) or 0.02 grams of alcohol per 100 grams of individual's blood, or 0.2 grams of alcohol per 1000 grams of blood. Blood alcohol concentration is measured in many different units and in many different fashions, but they are all relatively synonymous for each other. In many countries, BAC is reported as grams of alcohol per liter of blood (g/L). Because the specific gravity of blood is close to 1, the numerical value of BAC measured as mass per volume and that of BAC measured as mass per mass do not differ to any consequential degree other than the placement of the decimal point. For example, 1 g/L is equivalent to 0.94 g/kg. In the UK, BAC is reported as milligrams of alcohol per 100 millilitres of blood. For example, a BAC of 0.08% is legally given as a limit of 80 mg per 100 ml. It is also reported in grams per litre, which is an equivalent measurement. The number of drinks consumed is a very poor measure of intoxication largely because of variation in physiology and individual alcohol tolerance. However, it is generally accepted that the consumption from sober of two standard drinks (containing a total of 20 grams) of alcohol will increase the average person's BAC roughly 0.05% (a single standard drink consumed each hour after the first two will keep the BAC at approximately 0.05%), but there is much variation according to body weight, sex, and body fat percentage. Furthermore, neither BAC nor the number of drinks consumed are necessarily accurate indicators of the level of impairment. Tolerance to alcohol varies from one person to another, and can be affected by such factors as genetics, adaptation to chronic alcohol use, and synergistic effects of drugs. http://en.wikipedia.org/wiki/Blood_alcohol_content

Mahjong

Mahjong, sometimes spelled Mah Jongg, is a game that originated in China, commonly played by four players with some three-player variations found in Korea and Japan. The four player table version should not be confused with the popular Western single player tile matching computer game Mahjong solitaire, which is a recent invention and completely different from the table game. Similar to the Western card game rummy, mahjong is a game of skill, strategy and calculation and involves a certain degree of chance. In Asia, mahjong is also popularly played as a gambling game though it may just as easily be played recreationally.

The game is played with a set of 136 tiles based on Chinese characters and symbols, although some regional variations use a different number of tiles. In most variations, each player begins by receiving thirteen tiles. In turn players draw and discard tiles until they complete a legal hand using the fourteenth drawn tile to form four groups melds and a pair head. There are fairly standard rules about how a piece is drawn, stolen from another player melded, the use of basic numbered tiles and honours winds and dragons, the kinds of melds, and the order of dealing and play. However there are many regional variations in the rules; in addition, the scoring system, the minimum hand necessary to win varies significantly based on the local rules being used.

All tiles are placed face down on the table and are shuffled. By convention all players should participate in shuffling using both hands moving the pieces around the table, loudly, for a lengthy period. There is no fixed rule on how to deal or how to treat tiles which flip over during shuffle, though possible solutions include turning back over the pieces at the moment they are seen, turning over all revealed pieces at intervals or doing so at the end of the shuffling and forming of the wall.

Each player then stacks a row of 18 tiles two tiles high in front of him for a total of 36 tiles. Players then push each side of their tiles together to form a square wall.

The dealer throws three dice and sums up the total. Counting counterclockwise so that the dealer is 1 or 5, 9, 13, 17, so that south is 2 or 6, 10, 14, 18, etc., a player's quarter of the wall is chosen. Using the same total on the dice, the player then counts the stacks of tiles from right to left. Starting from the left of the stacks counted, the dealer takes four tiles to himself, and players in counterclockwise order take blocks of four tiles until all players have 12 tiles, so that the stacks decrease clockwise. Each player then takes one last tile to make a 13-tile hand. Dealing does not have to be this formal and may be done quite differently based on house rules.

Each player now sets aside any flowers or seasons they may have drawn and takes replacement pieces from the wall.

The dealer takes the next piece from the wall, adds it to his hand. If this does not complete a legal hand, he then discards a piece throwing it into the middle of the wall with no particular order in mind.

Local play on the street in Lanzhou

Each player takes a turn picking up a tile from the wall and then discarding a tile by throwing it into the centre and, if desired, announcing out loud what the piece is. Play continues this way until one player has a legal hand. At this point a player will call out mahjong and reveal their hand. There are four different ways that this order of play can be interrupted which is mentioned below.

During play, the number of tiles maintained by each player should always be thirteen tiles meaning in each turn a tile must be picked up and another discarded. Not included in the count of thirteen tiles are flowers and seasons set to the side and the fourth added piece of a kong mentioned below. If a player is seen to have more or less than thirteen tiles in their hand outside of their turn they are penalised.

Pathological Gambling

Pathological gambling is being unable to resist impulses to gamble, which can lead to severe personal or social consequences.
Causes

Pathological gambling usually begins in early adolescence in men, and between ages 20 and 40 in women.

Pathological gambling often involves repetitive behaviors. People with this problem have a hard time resisting or controlling the impulse to gamble. Although it shares features of obsessive compulsive disorder, pathological gambling is likely a different condition.

In people who develop pathological gambling, occasional gambling leads to a gambling habit. Stressful situations can worsen gambling problems.
Symptoms

People with pathological gambling often feel ashamed and try to avoid letting others know of their problem. The American Psychiatric Association defines pathological gambling as having five or more of the following symptoms:

Committing crimes to get money to gamble
Feeling restless or irritable when trying to cut back or quit gambling
Gambling to escape problems or feelings of sadness or anxiety
Gambling larger amounts of money to try to make back previous losses
Having had many unsuccessful attempts to cut back or quit gambling
Losing a job, relationship, or educational or career opportunity due to gambling
Lying about the amount of time or money spent gambling
Needing to borrow money due to gambling losses
Needing to gamble larger amounts of money in order to feel excitement
Spending a lot of time thinking about gambling, such as remembering past experiences or ways to get more money with which to gamble

A psychiatric evaluation and history can be used to diagnose pathological gambling. Screening tools such as the Gamblers Anonymous 20 Questions can help with the diagnosis.

Treatment

Treatment for people with pathological gambling begins with recognizing the problem. Pathological gambling is often associated with denial. People with the illness often refuse to accept that they have a problem or need treatment.

Most people with pathological gambling enter treatment under pressure from others, rather than voluntarily accepting the need for treatment.

Treatment options include:

    Cognitive behavioral therapy CBT has been found to be effective.
Self-help support groups, such as Gamblers Anonymous. Gamblers Anonymous is a 12-step program similar to Alcoholics Anonymous. Principles related to stopping the habit abstinence for other types of addiction, such as substance abuse and alcohol dependence, can also be helpful in the treatment of pathological gambling.
A few studies have been done on medications for the treatment of pathological gambling. Early results suggest that antidepressants and opioid antagonists naltrexone may help treat the symptoms of pathological gambling. However, it is not yet clear which people will respond to medications.

Like alcohol or drug addiction, pathological gambling is a chronic disorder that tends to get worse without treatment. Even with treatment, it's common to start gambling again relapse. However, people with pathological gambling can do very well with the right treatment.

 

Pachinko

Pachinko is a Japanese gaming device. A pachinko machine resembles a vertical pinball machine, but has no flippers and uses a large number of small balls. The player fires balls into the machine, which then cascade down through a dense forest of pins. If the balls go into certain locations, sequences of events are triggered that result in more balls being released; these balls can then be exchanged for prizes. Pachinko machines were originally strictly mechanical, but modern ones have incorporated extensive electronics, becoming similar to video slot machines.

The machines are widespread in establishments called parlors, which feature a number of slot machines; hence, they operate and look similar to casinos. Modern pachinko machines are highly customizable, keeping enthusiasts continuously entertained. Because gambling for cash is illegal in Japan, balls won cannot be exchanged directly for cash in the parlor; instead the balls are exchanged for tokens, which are then taken outside and exchanged for cash at a place nominally separate from the parlor and possibly run by organized crime.

As an indicator of the popularity of pachinko in Japan, Japanese government estimates of the annual turnover of the pachinko industry are in the region of 29 trillion yen. To put this in perspective, this is about twice the annual turnover of Japan's automobile industry, and approximately equivalent to the estimated annual turnover of the global narcotics trade.

Pachinko parlors are known for tweaking their machines to maximize their profits without intimidating customers, which means that most machines have different payout settings than what their manufacturers claim. The Japanese police can tolerate such manipulation as long as it happens outside of business hours; generally, those that cause a loss to the player are found in greater numbers.

Resetting of machines every day before opening hours is a feature of all parlors, because of the strict enforcement of closing times implying some players having to give up their machines when they hit a string of jackpots. Those whose machines are in payout mode at this time are allowed to collect their balls for the duration of the payout. Some parlors allow members to hold a particular machine across operating sessions. Timing is another factor in determining how parlors set their machines: holidays, when many people play pachinko, are favorable because many play it for leisure and the parlors are keen to attract them to come back for more. Weekends are unfavorable because the majority of players have only this time to play.

The layout of the different setting machines is a psychological method of attracting players; machines near the entrance are usually set at a high payout rate. When people walk by the parlor and see players at those machines with a large number of balls, they are more inclined to go inside and play the other machines even though they are at lower settings. For this purpose, many parlors employ "sakuras" to sit at these machines and emulate players winning a large number of balls; they are required to return these balls to the parlor free of charge minus their wages.