Articles tagged with Population Growth
A UTA study found that more than 65% of residents living in the transit-dependent core of Dallas have limited access to jobs within a 45-minute commute time. The study also shows that households spend over 19% of their income on transportation, making it unaffordable for many residents.
The study found a significant increase in Sumatran tiger population density, from 1.6 tigers/100 km2 in 2002 to 2.8 tigers/100 km2. Conservation efforts have contributed to this trend, with successful ranger patrols and habitat protection helping to reduce threats such as poaching and human-tiger conflict.
A study suggests that exclusion devices in fishing nets may be linked to elevated post-release mortality and reproductive failure among New Zealand sea lions. The research found a negative correlation between pup production and annual growth rates and the estimated interaction rate with the Auckland Islands squid fishery.
New research questions assumption that variability is key to population growth and survival. Variability in single-cell organisms can lower population growth rate in fixed environments.
The study estimates that 3% of the US population and 15% of African-American males have served time in prison. Felony convictions account for 8% of the overall population and 33% of African-American males.
A recent study found that the scent of a praying mantis can cause fruit flies to spend less time eating, more time being vigilant, and produce fewer offspring, leading to increased extinction risk. The study sheds light on the Allee effect, a long-standing biological conundrum related to population size and extinction.
The employment-to-population ratio for working-age people with disabilities increased from 28.1% in June 2016 to 29.8% in June 2017, up 6%. Labor force participation rates also rose, with people with disabilities outpacing those without disabilities.
A 35-year study of a protected alligator population has found that male and female alligators exhibit 'determinate growth,' stopping at some point after reaching sexual maturity. Females are reproductive far longer than previously thought, with one case reaching 46 years past onset of sexual maturity.
A new study found that military veterans with related post-traumatic stress disorder (PTSD) are more likely to experience post-traumatic growth, including increased appreciation of life and enhanced inner strength. Researchers discovered four groups with varying levels of post-traumatic growth, which shared common characteristics.
Researchers tracked white-tailed deer east of Casper for eight years, finding that CWD drastically reduced annual survival rates, especially in females. The population declined 10% annually over the study period, which could lead to localized extinctions in less than 50 years.
The study found significant growth in CTA exams per 1,000 Medicare enrollees, increasing from 2.1 in 2001 to 47.6 in 2013, with chest CTA utilization rising the most. CTA services grew most rapidly in ED settings, with the percentage of studies performed annually in EDs increasing from 11% in 2001 to 28% in 2014.
Researchers found that six known predators, including beetles and lacewings, naturally controlled cochineal scale insects on prickly pear plants, regulating their growth. Autonomous biological pest control may be a viable alternative to chemical pesticides under specific ecological conditions.
Workloads in general practice have increased by 16% over the past 7 years, with more frequent and longer consultations. The authors warn that the increases are unsustainable and that general practice in England is approaching a saturation point.
A new study uses radiocarbon dating to estimate ages, growth rates and reproductive maturity of sea turtles in the wild. The technique provides more accurate estimates than current methods, shedding light on factors influencing endangered sea turtle populations.
Researchers develop novel method to track microbial populations, revealing key role of initial cell death in long-term survival and adaptation to gut environment. This advancement could help identify novel therapies for treating conditions like irritable bowel syndrome, obesity, and cancer.
A new study found that a 2°C warmer climate may lead to rapid population extinctions in common lizards, with up to 30% of European populations at risk. The researchers used experimental conditions to simulate warmer climates and observed increased adult mortality, decreased population growth rates, and a shift in demographic strategy.
A study found that Listeria monocytogenes grew rapidly on unrefrigerated caramel apples with sticks, increasing 1,000-fold in just three days. Refrigeration significantly slowed growth, and bacteria were killed by hot caramel, highlighting the need for improved food safety measures.
Biologists from Penn University analyzed genetic data to track blacklegged tick migrations. The study reveals that ticks moved into new areas through short-distance local moves, shedding light on patterns of disease spread and controlling strategies.
The report emphasizes the importance of age-friendly communities in promoting aging-in-place and improving the quality of life for older citizens. By developing cities that meet the needs of all generations, economic and social policies can be transformed to support vulnerable populations.
A recent study reveals nearly double growth in middle-aged hip replacements between 2002-2011, primarily due to population expansion. This trend poses significant challenges for healthcare costs, access, and future revisions.
A study found that growth screening parameters can accurately detect celiac disease in children. Girls with CD were shorter than their peers two years prior to diagnosis, while boys were shorter one year prior.
A study published in The BMJ found that older patients who stayed in the hospital for less than 10 days after a hip fracture were more likely to die. The research analyzed data from 116,111 Swedish residents and showed that shorter hospital stays increased the risk of death.
A study by UCLA psychologists found that white Americans view diversity negatively when exposed to current projections of future demographics, with those who believe they will no longer be the majority expressing lower levels of support. This phenomenon is linked to whites feeling threatened by their perceived loss of American identity.
A recent Perspective piece in the New England Journal of Medicine suggests that the US may no longer need a separate, expensive VA healthcare system for its rapidly shrinking veteran population. The authors propose transitioning out of the hospital business while continuing to provide specialized services like mental health and rehabil...
Archaeologists at WSU document a bloody period of violence (1140-1180) in central Mesa Verde, Colorado, in contrast to nearby northern Rio Grande region. The study highlights factors like specialization and social structures that may have contributed to the differences in levels of violence.
A comprehensive study reveals that rising treatment costs account for 70% of growth in health care spending, with modest increases in disease cases having a minimal impact. The research emphasizes the need to focus on slowing down spending on procedures and treatments.
A study published in PLOS Medicine found that stillbirth may be linked to both underweight and overweight fetuses. The research used a new approach to estimate gestational age and identified abnormal fetal growth in 25% of stillbirths, with those born small for gestational age facing a 3- to 4-fold increased risk of stillbirth.
A new study published in the Journal of Bone and Joint Surgery found that economic downturns did not significantly impact the growth trends for hip and knee arthroplasty in the US. The study's results support previous projections, indicating a recession-proof demand for total joint replacement through at least 2021.
A University of Iowa researcher found a 'Goldilocks' effect in snail populations, where certain boundaries restrict growth and reproduction. This discovery may one day aid in controlling the spread of invasive species.
Researchers at EPFL have discovered a law that can predict the growth of cities based on past population data and neighboring cities. This allows for better planning and management of urbanization. The study analyzed data from Spain over 111 years, uncovering patterns in urban migration.
A UCSB anthropologist's study on the Tsimane population found that more open and extroverted personalities are associated with higher fertility in men, but not women. The research suggests that sex-specific differences in selection pressures may be driving this variation.
A new study reveals that at least five species of tropical fruit flies, including the infamous Medfly, are permanently established in California and spreading despite decades-long eradication efforts. The study's findings have significant implications for California agriculture and international trading partners.
A recent study by University of Illinois researchers identified behavioral subtypes within a modeled Escherichia coli population based on gene regulation and protein distributions. The findings suggest that tracking specific genes may be sufficient to capture most of the metabolic variability in the entire population.
A study of over 13,800 children found that those who gained 40% of their birthweight in the first four weeks had a 1.5-point higher IQ by age six compared to those who gained less weight. This suggests a link between rapid brain growth and higher cognitive abilities.
Researchers from Aalto University and international partners achieved controlled chirality in carbon nanotubes, opening up new perspectives for structural control and fundamental understanding of nanotube growth. The new catalyst enabled selective growth of semiconducting SWNTs with exceptionally high population of (6,5) tubes.
A mathematical model analyzes the impact of disease, animal migrations, and Allee effects on biodiversity. The study finds that population extinction is possible even when a healthy population is subject to small perturbations, highlighting the importance of considering global survival in ecosystem resilience.
The study found that the number of total knee replacements increased by over two and a half times from 1991 to 2010, driven by an aging population and increased demand among older adults. The procedure is highly effective, allowing patients to remain active as they age, but also represents a major healthcare expense for Medicare.
A recent study examines the trends of knee replacement procedures among Medicare patients over a 20-year period, revealing increased volume, per capita utilization, and outcomes. The analysis found a rise in primary and revision TKA procedures, as well as hospital readmission rates and infectious complications.
A recent analysis reveals unexpected trends in the growth of a northern muriqui monkey population, including increases in fertility and mortality rates. The study suggests that behavioral changes, such as increased use of the ground for food and mating, may be driving these shifts.
Concordia University researchers created a computer model to help car-sharing services grow while reducing congestion and carbon emissions. The model assesses areas with greatest growth potential and simulates various scenarios to predict the best strategy for growth.
A study by Universidad Carlos III de Madrid found no causal link between immigration and crime rates in Spain. The researchers analyzed data on crimes committed per inhabitant and immigrant population characteristics to conclude that language and education are key factors influencing crime.
A study found a significant mismatch between the growth of cardiac catheterization laboratories and the need for percutaneous coronary intervention (PCI) procedures. PCI centers have grown 12.9% over eight years, but STEMI rates have declined, leaving many patients without access to care.
A new study suggests that Chinook salmon populations must increase significantly to sustain the growth of Southern Resident killer whales, currently facing decline. The research, published in PLOS ONE, provides a detailed model for managing both species' conservation.
A model published in the European Physical Journal B reveals that online communities' activity grows faster than user population, driven by individual tagging behaviour and constant heterogeneity across systems. This finding confirms accelerated growth patterns in virtual worlds.
A University of Vermont scientist has developed a bio-pesticide using an insect-killing fungus and sweet whey to reduce the growth rate of hemlock woolly adelgid. The treatment showed promising results in trials, with a 50% reduction in pest population in infested trees.
A global review of research on stature and health during the agriculture transition found consistent trends of declining height and health globally. The study, published by Emory Health Sciences, analyzed data from various world regions and cultures, revealing a link between early agricultural practices and reduced adaptability to stress.
A recent study found that China's nursing home industry is experiencing rapid growth, driven by the country's aging population. However, the industry lacks adequate government oversight and regulation, leading to concerns about substandard care and poor staffing levels.
A new research agenda prioritizing baseline data for marine species is needed to diagnose population recovery after the Deepwater Horizon oil spill. The authors emphasize focusing on endangered species and economic impacts to inform management strategies.
A University of Colorado at Boulder researcher found that cities with larger increases in immigration between 1990 and 2000 experienced the largest decreases in rates of homicide and robbery. The study suggests that growth in new immigrant populations may be partly responsible for the decrease in violent crime.
Exposure to common pesticides limits wild salmon growth and size; improving water quality conditions could potentially increase the rate of recovery
A new study published in Neurology shows pregnant women with multiple sclerosis are only slightly more likely to have cesarean deliveries and babies with poor prenatal growth rates than those without MS. Women with MS were not at increased risk for other pregnancy complications.
The Commonwealth Fund report predicts family premiums will increase 119% between 1999 and 2008, reaching $23,842 per family by 2020. National reforms could save over $3,700 per family policy, with a 1% annual growth rate reduction yielding substantial savings.
Researchers are re-evaluating earthquake potential in the Central Coast region, a high-risk area with significant population growth. Fresh data from multiple datasets will focus on faults including the Hosgri Fault Zone and highlight newly identified features such as a linear trend of seismicity and magnetic anomalies.
Researchers are studying the life history of spiny dogfish sharks in the Gulf of Maine, using new techniques to determine their age and growth rate. Preliminary results show that the age at maturity has not changed dramatically, but the growth rate may be slowing down.
A new study from the University of New Hampshire found that elderly women can increase muscle strength similar to young women after an eight-week training regime. However, the older group showed a reduced capacity to increase power, which is more closely related to preventing falls.
Researchers at UC San Diego discovered that certain genes can switch between two phenotypes spontaneously, allowing cells to adapt to changing conditions. This phenomenon, known as epigenetic multistability, can be beneficial for gene expression and is crucial for understanding genetic inheritance.
Researchers estimate a significant increase in summer heat-related deaths in New York City due to climate change, with a 47-95% rise projected by the 2050s. The urban heat island effect and population vulnerability will exacerbate this risk.
A UCLA study found a nearly 80% decline in the number of Latino graduates from dental schools between 1982 and 1999, despite a 42.7% increase in the Latino population. This shortage will result in fewer dentists serving Spanish-speaking populations, with limited ability to bridge language gaps.
Research found an invasive whitefly has a mutualistic relationship with plant viruses, increasing its population on virus-infected plants. This relationship allows the whitefly to displace native biotypes and cause disease pandemics.
Scientists analyzed hundreds of local populations of the Glanville fritillary butterfly, finding that a single molecular variation affects population growth. The study showed that genetic factors and habitat structure influence population dynamics, contradicting previous views on the role of environmental factors.