Jennifer MacKay – författare

The thrilling sports of track and field offer an incredible opportunity to learn about principles of science. Author Jennifer MacKay covers types of races, jumping events, pole vaulting, shot putting, hammer throws, discus, and javelin sports. She provides a history of track and field, and also discusses related health and medical concerns.

Forensic artists are highly-trained specialists who creating composite drawings from witness descriptions and reconstruct crime scenes. This book explains the tools and techniques used by forensic artists, including facial reconstruction, image enhancement, and age progression. Students will be amazed by the skills of these artistic professionals and learn about the about the education needed for the job. Sidebars offer descriptions of unusual cases, and historical crime-solving breakthroughs.

Forensic biologists play a leading role in many investigations. They collect and examine bodily fluids, hair, and bones, in order to identify suspects. This book details the job of a forensic biologist, and examines the tools and techniques they use to collect analyze biological evidence. The tiniest bit of evidence can unravel the most puzzling of crimes. Sidebars are included, which offer step-by-step explanations of scientific and legal processes.

An extremely common misconception about phobias is that they''re linked to a traumatic event, but in fact, phobias can emerge at any time in a person''s life, without an obvious reason. You may suddenly find yourself suffering from lepidopterophobia, or a fear of butterflies. Author Jennifer MacKay offers young readers and researchers a means of understanding phobias and their ramifications. This guidebook offers insight into what phobias are, what causes them, how people live with them, and the latest information about treatment and prevention.

Once used as a dramatic plot twist in daytime soap operas, amnesia is a real condition that is frightening to suffers and can even be brought on by strokes. Author Jennifer MacKay provides young readers and researchers with careful explanations into what amnesia is. Readers will learn about the mystery of memory loss, and how the brain makes memories. They will learn about the causes and how amnesia is diagnosed. Treatment is also covered. Fast facts and data are further provided through interesting sidebars and charts

On April 20, 1999, two teen boys went on a shooting rampage at Columbine High School in Littleton, Colorado. They killed 13 people, before turning their guns on themselves and committing suicide. Detailed here is an overview of the Columbine High School shootings and an exploration into the forensic casework involved in recreating the scene of the crimes. Includes sidebars containing first-person accounts of the incident.

Many of our imaginative inventions eventually come to fruition, and the robot is one such creation. The science-fiction robots of yesteryear are here. From assembly lines to teaching tools, robots are a reality that author Jennifer MacKay richly explores in this book. Readers will learn robotic history, how robots move, "think," and are used. They will also consider future uses.

Cryptology has long been employed by governments, militaries, and businesses to protect private communications. This anthology provides readers with a revealing look into the world of cryptology. The techniques used to disguise messages are explained, as well as the methods used to crack the codes and ciphers of encrypted messages. Readers will discover how cutting edge forensic science reveals the clues in the tiniest bits of evidence. A fact versus fiction section helps keep concepts rooted in known truths.

According to the FBI, 33,000 violent street gangs, motorcycle gangs, and prison gangs, with nearly 1.4 million members, are criminally active in the U.S. today. One of the most notorious and dangerous gangs, Mara Salvatrucha, or MS-13, originated in Los Angeles and has as many as 50,000 members. The Justice Department credits gangs with illegal smuggling, transportation, and distribution of large amounts of drugs in the United States. This expansive volume explores the issues surrounding gangs. The book tackles the history of gangs in America, the relationship between gangs and culture, and gangs as businesses.

The C.D.C. reports that a total of 249,078 babies were born to women between the ages of 15 to 19 in 2014. According to The National Campaign, the teen pregnancy rate has decreased 64 percent between 1991 and 2015, but the rate of teenage pregnancy in United States continues to rank consistently higher than those of other western countries. This informative volume contextualizes and explores issues surrounding teen pregnancy. Chapters discuss its causes, social factors that contribute to teen pregnancy, if it is a public health problem, and the various options for pregnant teens.

Readers will never see soccer in the same way after reading this volume. The opening chapter provides a high-level overview, including soccer''s origins, popularity around the world, possible controversies, and recent hot topics. Further chapters ease into the scientific principles and concepts relevant to soccer. Readers will learn about the biomechanics and physiology related to play, and relevant elements of related sports medicine. Readers will also learn about exercise, training, warm-ups, motor control and muscle fatigue, respiration and cardiovascular efficiency, diet and nutrition, and drugs.

Author Jennifer MacKay focuses on the invention of electric cars, exploring how it was developed, how it works, its impact on society, and possible future uses.

The Anxiety and Depression Association of America describes hoarding as persistent difficulty in discarding or parting with possessions. In the United States, 700,000 to 1.4 million people suffer from compulsive hoarding. This informative volume covers the psychological elements of compulsive hoarding but also addresses the legal implications of hoarding. Media coverage of hoarding and the development of reality television shows devoted to the controversial subject are also explored.

Bipolar disorder is often misdiagnosed as depression in women or schizophrenia in men. This essential volume objectively and thoughtfully explores bipolar disorder. It provides a detailed description of the disorder and how it affects the body, as well as diagnosis and treatment. Readers will also hear from personal stories of what it is like to live with this disorder.

Figure skating, which is the world''s most popular winter Olympic sport, is the subject of this volume. Though figure skaters are often known for their theatrical and artistic performances, author Jennifer MacKay outlines for readers the complex physical and biomechanical properties at work in this beautiful and demanding sport. From the development of the indoor ice rink, to the application of Newton''s laws of motion, to the psychological challenges faced by many skaters, MacKay explores how these athletes achieve amazing physical accomplishments and perfect their art.

Author Jenny MacKay takes readers on a wild ride through the history, design fundamentals, and scientific principles behind roller coasters. Readers will learn how gravity and physical forces create the fastest amusement park attractions and how steel and wooden roller coasters are designed and constructed. The final chapter, focused on the roller coasters of the future, describes the recent use of electromagnets and CAD technology.

According to the Department of Health and Public Services, 28 percent of U.S. students in grades 6-12 have experienced bullying, and 30 percent of young people admit to bullying. Types of bullying vary widely in severity and can include physical, verbal, social, and cyber bullying. This essential volume explores the characteristics of those who bully, why certain people fall victim to such abuse, the causes of bullying, the physical and psychological impact of bullying, and how bullying can be prevented.

According to the Mass Shooting Tracker, there have been 1,744 mass shootings in the United States since 2013. The Second Amendment grants citizens of the United States the right to bear arms, but gun control laws vary from state to state. Many people lobby for stricter federal gun control in order to curb gun-related deaths, while others perceive regulation as an infringement on rights. This timely edition takes a look at one of the most contested issues in American government and society today: the policing and regulation of firearms. Individual chapters will cover the history of gun control in the United States, the spectrum of opinions on firearms regulation, the meaning of the Second Amendment, arguments in favor of and those against tighter gun control, and various types of legislation being considered.

This guidebook deals with nutrition as part of sports. It delves into how diet impacts athletic performance and which types of food should be eaten for particular sports. Full-color photographs and diagrams, a glossary, sources for further reading and research, and a detailed subject index are also included.

Author Jennifer MacKay provides an in-depth volume on the ancient sport of Taekwondo. Readers will learn about the physics and biomechanics of the sport. They will appreciate the amount of fitness and training that is involved to be great at the sport. Additionally, they''ll learn about nutrition, injuries, and the psychology behind Taekwondo.

Teaching and learning online take place in schools that operate completely in a computerized world. The underlying technology that makes this possible is growing and evolving at a rapid pace, guaranteeing that online schools will be around for a long time and but must change continuously to keep up with new capabilities. This volume provides the history of learning outside the traditional classroom and explains the technology of online education, tools and techniques used in online learning. Readers will also learn about the limitations and advantages of online learning.

Author Jennifer MacKay focuses on songwriting from a craft standpoint. Because the lyrics themselves are only one part of songwriting, she also covers melody, tempo, and rhythm, and explains how this can differ between genres. A few key influential singers and songwriters are discussed along with the general craft.

Tim Tebow rose to college football stardom as the Florida Gator''s starting quarterback in 2007. The following year he became the youngest person to earn the Heisman Trophy. In 2010, he was drafted by the Denver Broncos and soon after traded to the New York Jets. In 2016, Tebow announced that he would be leaving professional football to pursue a career in major league baseball. This informative edition examines the life, accomplishments, and career of this multitalented athlete.

This book covers the life and career of filmmaker and explorer James Cameron. The volume examines his early life and career, as well as his making of the successful films Terminator, Titanic, and Avatar. The book also delves into Cameron''s ocean expeditions. Readers will be inspired by this Emmy and Academy Award-winning personality.

This compelling volume focuses on the life of Prince William and Duchess Kate. The book begins by delving into both Will and Kate''s childhoods. It then moves into their college years where they met and became a couple and eventually engaged. The book ends with their marriage, the birth of Prince George, and settling into their royal duties as the future king and queen of England.

Organic food is everywhere, and in most cases, is more costly than readily available produced foods. This book evaluates and explains the benefits of going organic. It details how consumers can find true organic foods while shopping and how best to prepare them.

Author Jennifer MacKay provides background on the Hindu religion and how the tales, as well as the gods and goddesses, evolved throughout history. Readers will be introduced to marvelous epic tales of Hindu heroes and gods, and learn how followers worship the Pantheon of Hindu Gods. They will also learn about Hinduism''s role in the world today.

How big of a concern is teen pregnancy in today’s society? What options do teens have once they get pregnant? This controversial issue is examined in depth, presenting young adults with information from all sides of the debate. Graphs and full-color photographs highlight the discussion of the underlying social factors that are the root causes of teen pregnancy to make readers better informed about these issues. A list of websites gives pregnant teens resources to turn to for support and advice.