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result(s) for
"Human Activities"
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Adventure cat! : and more true stories of amazing cats!
by
Zoehfeld, Kathleen Weidner
in
Cats Behavior Juvenile literature.
,
Human-animal relationships Juvenile literature.
,
JUVENILE NONFICTION / Readers / Chapter Books.
2018
\"Join three fantastic felines as they embark on the adventures of their (nine) lives in this colorful Chapters book, filled with photos and fun facts. Meet Dusty, a Siamese cat who gives the phrase \"cat burglar\" new meaning. Take to the seas with Scatty, a sailor and cat hero. And trek across the United States with Vladimir, a real-life cat explorer! These amazing--and TRUE--stories are sure to keep cat lovers and adventure fans on the edge of their seats\"-- Provided by publisher.
Bending the curve of terrestrial biodiversity needs an integrated strategy
by
Chaudhary, Abhishek
,
Leclère, David
,
Doelman, Jonathan C.
in
631/158/670
,
704/172/4081
,
706/1143
2020
Increased efforts are required to prevent further losses to terrestrial biodiversity and the ecosystem services that it provides
1
,
2
. Ambitious targets have been proposed, such as reversing the declining trends in biodiversity
3
; however, just feeding the growing human population will make this a challenge
4
. Here we use an ensemble of land-use and biodiversity models to assess whether—and how—humanity can reverse the declines in terrestrial biodiversity caused by habitat conversion, which is a major threat to biodiversity
5
. We show that immediate efforts, consistent with the broader sustainability agenda but of unprecedented ambition and coordination, could enable the provision of food for the growing human population while reversing the global terrestrial biodiversity trends caused by habitat conversion. If we decide to increase the extent of land under conservation management, restore degraded land and generalize landscape-level conservation planning, biodiversity trends from habitat conversion could become positive by the mid-twenty-first century on average across models (confidence interval, 2042–2061), but this was not the case for all models. Food prices could increase and, on average across models, almost half (confidence interval, 34–50%) of the future biodiversity losses could not be avoided. However, additionally tackling the drivers of land-use change could avoid conflict with affordable food provision and reduces the environmental effects of the food-provision system. Through further sustainable intensification and trade, reduced food waste and more plant-based human diets, more than two thirds of future biodiversity losses are avoided and the biodiversity trends from habitat conversion are reversed by 2050 for almost all of the models. Although limiting further loss will remain challenging in several biodiversity-rich regions, and other threats—such as climate change—must be addressed to truly reverse the declines in biodiversity, our results show that ambitious conservation efforts and food system transformation are central to an effective post-2020 biodiversity strategy.
To promote the recovery of the currently declining global trends in terrestrial biodiversity, increases in both the extent of land under conservation management and the sustainability of the global food system from farm to fork are required.
Journal Article
Fenway and Hattie in the wild
by
Coe, Victoria J., author
,
Lombardi, Kristine A., illustrator
in
Jack Russell terrier Fiction.
,
Dogs Fiction.
,
Camping Fiction.
2019
\"Fenway gets a taste of the wild when he goes on a back-to-school camping trip with Hattie where they both feel nervous about being the new kid\"-- Provided by publisher.
Large contribution from anthropogenic warming to an emerging North American megadrought
by
Cook, Benjamin I.
,
Livneh, Ben
,
Smerdon, Jason E.
in
Anthropogenic factors
,
Climate
,
Climate change
2020
Severe and persistent 21st-century drought in southwestern North America (SWNA) motivates comparisons to medieval megadroughts and questions about the role of anthropogenic climate change. We use hydrological modeling and new 1200-year tree-ring reconstructions of summer soil moisture to demonstrate that the 2000–2018 SWNA drought was the second driest 19-year period since 800 CE, exceeded only by a late-1500s megadrought. The megadrought-like trajectory of 2000–2018 soil moisture was driven by natural variability superimposed on drying due to anthropogenic warming. Anthropogenic trends in temperature, relative humidity, and precipitation estimated from 31 climate models account for 47% (model interquartiles of 35 to 105%) of the 2000–2018 drought severity, pushing an otherwise moderate drought onto a trajectory comparable to the worst SWNA megadroughts since 800 CE.
Journal Article
Rescue & Jessica : a life-changing friendship
by
Kensky, Jessica, author
,
Downes, Patrick, 1984- author
,
Magoon, Scott, illustrator
in
Service dogs Juvenile fiction.
,
People with disabilities Juvenile fiction.
,
Human-animal relationships Juvenile fiction.
2018
\"Rescue thought he'd grow up to be a Seeing Eye dog - it's the family business, after all. But when he gets the news that he's better suited to being a service dog, he's worried that he's not up to the task. Then he meets Jessica, a girl whose life turned out differently from the way she'd imagined it, too. Now Jessica needs Rescue by her side to help her accomplish everyday things. And it turns out that Rescue can help Jessica see after all: a way forward, together- one step at a time.\"--Provided by publisher.
Pervasive human-driven decline of life on Earth points to the need for transformative change
by
Chan, Kai M. A.
,
Liu, Jianguo
,
Ichii, Kazuhito
in
Adaptive systems
,
Aquatic ecosystems
,
Biodiversity
2019
For decades, scientists have been raising calls for societal changes that will reduce our impacts on nature. Though much conservation has occurred, our natural environment continues to decline under the weight of our consumption. Humanity depends directly on the output of nature; thus, this decline will affect us, just as it does the other species with which we share this world. Díaz et al. review the findings of the largest assessment of the state of nature conducted as of yet. They report that the state of nature, and the state of the equitable distribution of nature's support, is in serious decline. Only immediate transformation of global business-as-usual economies and operations will sustain nature as we know it, and us, into the future. Science , this issue p. eaax3100 The human impact on life on Earth has increased sharply since the 1970s, driven by the demands of a growing population with rising average per capita income. Nature is currently supplying more materials than ever before, but this has come at the high cost of unprecedented global declines in the extent and integrity of ecosystems, distinctness of local ecological communities, abundance and number of wild species, and the number of local domesticated varieties. Such changes reduce vital benefits that people receive from nature and threaten the quality of life of future generations. Both the benefits of an expanding economy and the costs of reducing nature’s benefits are unequally distributed. The fabric of life on which we all depend—nature and its contributions to people—is unravelling rapidly. Despite the severity of the threats and lack of enough progress in tackling them to date, opportunities exist to change future trajectories through transformative action. Such action must begin immediately, however, and address the root economic, social, and technological causes of nature’s deterioration.
Journal Article
Applying Multivariate Segmentation Methods to Human Activity Recognition From Wearable Sensors’ Data
2019
Time-resolved quantification of physical activity can contribute to both personalized medicine and epidemiological research studies, for example, managing and identifying triggers of asthma exacerbations. A growing number of reportedly accurate machine learning algorithms for human activity recognition (HAR) have been developed using data from wearable devices (eg, smartwatch and smartphone). However, many HAR algorithms depend on fixed-size sampling windows that may poorly adapt to real-world conditions in which activity bouts are of unequal duration. A small sliding window can produce noisy predictions under stable conditions, whereas a large sliding window may miss brief bursts of intense activity.
We aimed to create an HAR framework adapted to variable duration activity bouts by (1) detecting the change points of activity bouts in a multivariate time series and (2) predicting activity for each homogeneous window defined by these change points.
We applied standard fixed-width sliding windows (4-6 different sizes) or greedy Gaussian segmentation (GGS) to identify break points in filtered triaxial accelerometer and gyroscope data. After standard feature engineering, we applied an Xgboost model to predict physical activity within each window and then converted windowed predictions to instantaneous predictions to facilitate comparison across segmentation methods. We applied these methods in 2 datasets: the human activity recognition using smartphones (HARuS) dataset where a total of 30 adults performed activities of approximately equal duration (approximately 20 seconds each) while wearing a waist-worn smartphone, and the Biomedical REAl-Time Health Evaluation for Pediatric Asthma (BREATHE) dataset where a total of 14 children performed 6 activities for approximately 10 min each while wearing a smartwatch. To mimic a real-world scenario, we generated artificial unequal activity bout durations in the BREATHE data by randomly subdividing each activity bout into 10 segments and randomly concatenating the 60 activity bouts. Each dataset was divided into ~90% training and ~10% holdout testing.
In the HARuS data, GGS produced the least noisy predictions of 6 physical activities and had the second highest accuracy rate of 91.06% (the highest accuracy rate was 91.79% for the sliding window of size 0.8 second). In the BREATHE data, GGS again produced the least noisy predictions and had the highest accuracy rate of 79.4% of predictions for 6 physical activities.
In a scenario with variable duration activity bouts, GGS multivariate segmentation produced smart-sized windows with more stable predictions and a higher accuracy rate than traditional fixed-size sliding window approaches. Overall, accuracy was good in both datasets but, as expected, it was slightly lower in the more real-world study using wrist-worn smartwatches in children (BREATHE) than in the more tightly controlled study using waist-worn smartphones in adults (HARuS). We implemented GGS in an offline setting, but it could be adapted for real-time prediction with streaming data.
Journal Article
Understanding the prevalence of bear part consumption in Cambodia: A comparison of specialised questioning techniques
by
Davis, Elizabeth Oneita
,
Hunt, Matt
,
O’Connor, David
in
Analysis
,
Animal populations
,
Animals
2019
The trade in bear parts for medicine and for status is a conservation challenge throughout Asia. The Asiatic black bear (Ursus thibetanus) and the sun bear (Helarctos malayanus) are endemic to this region, and populations are estimated to have declined throughout their ranges due to widespread illegal killing of bears and trade in parts, combined with loss of habitat. Previous studies have indicated that legislation alone is insufficient to prevent illegal hunting and trade, indicating instead a need to address demand for bear parts and products. We conducted mixed-method surveys in Cambodia to understand the key motivators for individuals to consume bear parts, and to understand whether specialised questioning techniques are applicable in this context. Bear part use is illegal in Cambodia and may therefore be considered a sensitive behaviour, in that individuals may be reluctant to admit to it. To counteract possible biases, four specialised questioning techniques were used in this study: randomised response technique (RRT), unmatched count technique (UCT), nominative technique (NT), and false consensus bias (FCB). All four methods serve to shield a respondent's admittance of a sensitive behaviour from the interviewer. The results presented here show that great variability exists in anonymous methods' efficacy in certain contexts. However, the results overall indicate that individuals in Cambodia are under-reporting their consumption of bear parts when directly asked, and that the prevalence of bear part use in Cambodia may be as high as 15% of the population, representing a significant conservation challenge.
Journal Article
Biodiversity: The ravages of guns, nets and bulldozers
by
Brooks, Thomas M.
,
Fuller, Richard A.
,
Watson, James E. M.
in
631/158/672
,
704/172
,
Agriculture - statistics & numerical data
2016
The threats of old are still the dominant drivers of current species loss, indicates an analysis of IUCN Red List data by Sean Maxwell and colleagues.
Journal Article
Deep Convolutional and LSTM Recurrent Neural Networks for Multimodal Wearable Activity Recognition
by
Roggen, Daniel
,
Ordóñez, Francisco
in
Databases, Factual
,
deep learning
,
Human Activities - classification
2016
Human activity recognition (HAR) tasks have traditionally been solved using engineered features obtained by heuristic processes. Current research suggests that deep convolutional neural networks are suited to automate feature extraction from raw sensor inputs. However, human activities are made of complex sequences of motor movements, and capturing this temporal dynamics is fundamental for successful HAR. Based on the recent success of recurrent neural networks for time series domains, we propose a generic deep framework for activity recognition based on convolutional and LSTM recurrent units, which: (i) is suitable for multimodal wearable sensors; (ii) can perform sensor fusion naturally; (iii) does not require expert knowledge in designing features; and (iv) explicitly models the temporal dynamics of feature activations. We evaluate our framework on two datasets, one of which has been used in a public activity recognition challenge. Our results show that our framework outperforms competing deep non-recurrent networks on the challenge dataset by 4% on average; outperforming some of the previous reported results by up to 9%. Our results show that the framework can be applied to homogeneous sensor modalities, but can also fuse multimodal sensors to improve performance. We characterise key architectural hyperparameters’ influence on performance to provide insights about their optimisation.
Journal Article