Results 51 to 60 of about 70,117 (304)

Genetic structure and genetic diversity of Swietenia macrophylla in areas subjected to selective logging in Quintana Roo, Mexico

Botan‪ical Sciences, 2015
The hypothesis that selective logging has a negative effect by altering the genetic parameters of tropical tree species was evaluated. The genetic diversity and genetic structure between adult trees (N = 47) and saplings (N = 50) of Swietenia macrophylla
Raúl Ernesto Alcalá, Silvia De la Cruz, Gabriel Gutiérrez-Granados   +2 more
doaj   +1 more source

Roadless space and logging in intact forest landscapes of the Congo Basin [PDF]

, 2016
Background: Forest degradation in tropical regions is often associated with roads built for selective logging. Forest areas that are not accessible by roads are considered valuable because they provide habitat that is not immediately impacted by major ...
Gourlet-Fleury, Sylvie, Healey, John R., Kleinschroth, Fritz, Mortier, Frédéric, Sist, Plinio, Stoica, Radu S.   +5 more
core  

Feature selection for log-linear acoustic models [PDF]

2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2011
Log-linear acoustic models have been shown to be competitive with Gaussian mixture models in speech recognition. Their high training time can be reduced by feature selection. We compare a simple univariate feature selection algorithm with ReliefF - an efficient multivariate algorithm.
S. Wiesler, A. Richard, Y. Kubo, R. Schluter, H. Ney   +4 more
openaire   +1 more source

Inpatient Food Insecurity and Pediatric Hematology Oncology Hospitalization Outcomes

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Children with cancer and blood disorders are at risk for food insecurity (FI). We aimed to describe the association of inpatient food insecurity (IFI) and hospitalization outcomes among patients admitted to the pediatric hematology oncology service. Of 325 caregivers screened for IFI, 60 (18.6%) screened positive.
Joanna M. Robles, Greg Russell, Leila H. DeWitt, Kimberly Montez, Callie L. Brown   +4 more
wiley   +1 more source

Mapping low-intensity selective logging across the Peruvian Amazon

Environmental Research Letters
Selective logging is a major driver of tropical forest degradation and is estimated to span over 400 million hectares of tropical forest. Despite widely available forest monitoring tools that effectively map deforestation, accurate and scalable remote ...
Christopher G Bousfield, David P Edwards, Matthew G Hethcoat, Luis Enrique Campos Zumaeta, Edwin Allccahuaman Mañuico, Anabella Minhuey, Robert G Bryant   +6 more
doaj   +1 more source

Soil–Atmosphere Exchange of Nitrous Oxide, Nitric Oxide, Methane, and Carbon Dioxide in Logged and Undisturbed Forest in the Tapajos National Forest, Brazil [PDF]

, 2009
Selective logging is an extensive land use in the Brazilian Amazon region. The soil–atmosphere fluxes of nitrous oxide (N2O), nitric oxide (NO), methane (CH4), and carbon dioxide (CO2) are studied on two soil types (clay Oxisol and sandy loam Ultisol ...
Asner, Gregory P., Crill, Patrick M., de Oliveira, Raimundo Cosme, Jr., Dias, Jadson D., Keller, Michael, Silva, Hudson, Varner, Ruth K.   +6 more
core   +2 more sources

Feasibility and Safety of High‐Dose Proton Re‐Irradiation in Recurrent Pediatric Central Nervous System Tumors: A Single‐Institution Retrospective Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Pediatric central nervous system (CNS) tumors often recur despite multimodality therapy. Although re‐irradiation (re‐RT) has historically been limited by concerns for severe late toxicities, modern techniques have renewed interest in this approach. Proton therapy provides dosimetric advantages that may enable curative re‐treatment with
Jin‐Ho Song, Jonathan Baron, Carlos Chavez Perez, Sidharth Ramesh, Jane Minturn, Kavita A. Desai, Amish C. Shah, Jean M. Belasco, Kristina A. Cole, Michael J. Fisher, Phillip B. Storm, Peter M. Madsen, Goldie Kurtz, Robert A. Lustig, Christine Hill‐Kayser, Michael J. LaRiviere   +15 more
wiley   +1 more source

Assessment of the CLASlite forest monitoring system in detecting disturbance from selective logging in the Selva Maya, Mexico

Silva Fennica, 2019
Detecting and monitoring forest disturbance from selective logging is necessary to develop effective strategies and polices that conserve tropical forests and mitigate climate change.
Irving U. Hernández-Gómez, Carlos R. Cerdán, Angélica Navarro-Martínez, Dinora Vázquez-Luna, Samaria Armenta-Montero, Edward A. Ellis   +5 more
doaj   +1 more source

A new tool to calculate roadless space in forest landscapes, applied in the Congo basin [PDF]

, 2015
New global strategies for road building require innovative tools to analyze linear patterns and their spatial distribution and to evaluate their environmental impacts. Roads not only present physical barriers to wildlife but also provide access for human
Gourlet-Fleury, Sylvie, Healey, John R., Kleinschroth, Fritz, Mortier, Frédéric, Stoica, Radu S.   +4 more
core  

Seismic stratigraphy of the Ontong Java Plateau [PDF]

, 1993
The Ontong Java Plateau, a large, deep-water carbonate plateau in the western equatorial Pacific, is an ideal location for studying responses of carbonate sedimentation to the effects of changing paleoceanographic conditions.
Bassinot, Frank, Hagen, Rick A., Lyle, Mitchell, Marsters, Janice C., Mayer, Larry A., Mosher, David, Shipley, Tom H., Wilkens, Roy H., Winterer, Edward L.   +8 more
core   +2 more sources