D

      The meaning of silence varies among cultural groups. Silences may be thoughtful, or they may be empty when a person has nothing to say. A silence in a conversation may also show stubbornness, or worry. Silence may be viewed by some cultural groups as extremely uncomfortable; therefore attempts may be made to fill every gap(间隙)with conversation. Persons in other cultural groups value silence and view it as necessary for understanding a person's needs.

        Many Native Americans value silence and feel it is a basic part of communicating among people, just as some traditional Chinese and Thai persons do. Therefore, when a person from one of these cultures is speaking and suddenly stops, what maybe implied(暗示) is that the person wants the listener to consider what has been said before continuing. In these cultures, silence is a call for reflection.

        Other cultures may use silence in other ways, particularly when dealing with conflicts among people or in relationships of people with different amounts of power. For example, Russian, French, and Spanish persons may use silence to show agreement between parties about the topic under discussion. However, Mexicans may use silence when instructions are given by a person in authority rather than be rude to that person by arguing with him or her. In still another use, persons in Asian cultures may view silence as a sign of respect, particularly to an elder or a person in authority.

Nurses and other care-givers need to be aware of the possible meanings of silence when they come across the personal anxiety their patients may be experiencing. Nurses should recognize their own personal and cultural construction of silence so that a patient's silence is not interrupted too early or allowed to go on unnecessarily. A nurse who understands the healing(治愈) value of silence can use this understanding to assist in the care of patients from their own and from other cultures.

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Do you believe that things are connected for no scientific reason at all? For example, do you avoid saying the word "four" to avoid bad luck? If so, you have a superstition (迷信). And you're not alone – all kinds of people have them.

For example, Portugal's soccer superstar Cristiano Ronaldo always steps onto the pitch (球场) with his right foot first, according to The Telegraph. And sports players are not alone in having superstitions. A visitor once asked the Nobel Prize winning scientist Niels Bohr whether he really believed that the horseshoe he'd hung at his country home was lucky. "Of course not," the Danish physicist said. "But I understand it's lucky whether you believe in it or not."

One recent study found that even scientists at MIT and other top US schools tended to look for a meaning in natural events, similar to the connection between stepping on the pitch and playing soccer well, according to The Atlantic. When the researchers gave the scientists little time to answer questions, they were twice as likely to agree with statements such as "Trees produce oxygen so that animals can breathe" as they were when they had more time to think about their reply.

It seems that fear can make people think differently in this way, too. In a British study, students imagined meeting a "witch" who said she would cast (施魔法) an evil spell(符咒) on them. About half said a scientist should not be worried about the spell. Yet each of them said that, personally, they wouldn't let the witch do it to them.

So why are so many of us superstitious? Well, it seems to be our way of dealing with the unknown. "Many people quite simply just want to believe," Brian Crank, a professor of psychology at Missouri Western State University, said in a 2008 interview. "The human brain is always trying to work out why things happen, and when the reason is not clear, we tend to make up some pretty bizarre (古怪的) explanations."

    And these explanations aren't completely unhelpful. In fact, superstitions can sometimes work and bring real luck, according to psychologists at the University of Cologne in Germany in the May 2010 issue of the journal Psychological Science. They found that believing in something can improve performance on a task like an exam.

    So, what about you? What superstitions do you follow to keep you safe and successful?

    In many American schools the holiday celebrating Dr. Martin Luther King Jr.'s birthday is used as an opportunity to teach children about his life and legacy. But in too many of those same schools, Black children's extraordinary talents are still being wasted today. Nearly three-quarters of Black fourth and eighth grade public school students cannot read or compute at grade level. Black students made up only 18 percent of students in public schools in 2009-2010 but were 40 percent of students who received one or more out-of-school suspensions (暂被停学). A Black public school student is suspended every four seconds. Black students are more than twice as likely to drop out of school as White students. Each school day 763 Black high school students drop out.

    So I applaud the U.S. Departments of Education and Justice for their recent action to address harmful school discipline policies that push so many thousands of black children out of school each year and into the juvenile (青少年) justice and adult prison pipeline. If the education system is to do its part in replacing it with a cradle to college, career and success pipeline, we must end the current practice where children in the greatest need are suspended from school mostly for nonviolent offenses.

    These resources, officially known as "guidance," will help schools and districts meet their legal responsibility to protect students from discrimination (歧视) on the basis of race, color or national origin as required under Title VI of the Civil Rights Act of 1964. As we recognize the 50^th anniversary of the Civil Rights Act of 1964 and so many other important hard-won victories in the Civil Rights Movement this year, we must remember those victories could be lost without meaningful enforcement of the laws advocates fought so hard to win half a century ago.

    While the guidance does not prohibit (禁止) schools or districts from using any particular nondiscriminatory policy, it does call into question some policies that have historically excluded Black students and are of questionable educational value including "zero tolerance" discipline policies which require mandatory (强制的) consequences for certain infractions (违反), and policies that prevent students from returning to school after completion of a court sentence.

    Information of the new guidance recommendations is available at this government website for almost every school and district in the country. Check your own school district now to see whether the discipline policy is focused on creating a positive school climate and preventing misbehavior, whether consequences are clear, appropriate and consistent, and whether there is a commitment to fairness in the application of discipline.

    Millions of Americans sit behind a computer screen, chained to their desk all day because the vast majority of stable, high-paying professions(职业) are "office jobs". However, having a successful career does not require you to sit behind a desk and plug away at a computer all day.

    In fact, there are a large number of non-desk jobs in a variety of industries that are growing and offering workers a direct path to the middle class, according to a new analysis of labor market information from CareerBuilder. While most of the highest-paying non-desk jobs are medical professions that require a doctoral or professional degree, there are 170 non-desk professions that pay $15 per hour or more, do not require a bachelor's degree(学士学位) for a typical entry-level position, and have seen at least 6 percent job growth over the last four years.

    "The US workforce has gradually changed to office-based work because of the rise of the professional service economy and productivity gains associated with information technology," Rosemary Haefner, Vice President of Human Resources Officer at CareerBuilder, said in a statement. "But some of the healthiest areas of job growth year after year are in middle-skill professions that don't require workers to sit in front of computer monitors and phones for 40 hours a weel."

    Here are the top-paying jobs that don't require you to work at a desk in various kinds — none of which require a four-year college degree — and their hourly salary(工资) and growth rate since 2010: professional assistants(助理) : $26.57, 14 percent; elevator repairers: $37.81, 6 percent; mechanical engineering technicians: $25.19, 10 percent; and electromechanical(电动机械的) technicians: $24.68, 8 percent.

    While they tend to pay less than traditional office jobs, non-desk professions provide a variety of benefits. Haefner points to a 2014 CareerBuilder survey that discovered workers who don't work at a desk all day are less likely to complain about their work environment and less likely to report being overweight.

    More than one billion young people risk damaging their hearing through the overuse of smartphones and other audio devices, the UN warned Tuesday, proposing new safety standards for safe volume levels.

    Currently, about five percent of the global population, or some 466 million people, including 34 million children, suffer from disabling hearing loss. Young people are particularly likely to develop such risky listening habits. Around half of those between the ages of 12 and 35, or 1.1 billion people, are at risk due to "long and severe exposure to loud sounds, including music they listen to through personal audio devices," the UN health agency said.

    In a bid to safeguard hearing, the World Health Organization and International Telecommunications Union issued an international standard for the manufacture and use of audio devices. WHO considers a volume above 85 decibels for eight hours or 100 decibels for 15 minutes as unsafe. The safe listening devices and systems standard calls for a "sound allowance" software to be included in all audio devices, to track the volume level and duration of a user's exposure to sound, and to evaluate the risk posed to their hearing. This system could alert a user if they have dangerous listening habits.

    WHO is also calling for parental as well as automatic volume controls on audio devices to prevent dangerous use. While some smartphones and other audio devices already offer some of these features, the UN would like to see a uniform standard used to help protect against disabling hearing loss.

    "Think of it like driving on a highway, but without a speedometer in your car or a speed limit," Shelly Chadha of the WHO told reporters in Geneva. "What we've proposed is that your smartphones come fitted with a speedometer, with a measurement system which tells you how much sound you're getting and tells you if you are going over the limit".