bluuebunny/crossref_metadata_2025 huggingface dataset:
Elk Movements, Habitat Use, and Population Dynamics in Theodore Roosevelt National Park
Authors: Irby Lynn , Marlow Clayton , Picton Harold , Westfall Jerry
Published: July 2020

Objectives 1) Description of daily and seasonal movements of elk (Cervus elaphus); 2) Identification of seasonally important habitat types and physiographic character of areas used for feeding, cover, mating, and calving; 3) Identification of damage to Park resources or property of adjoining landowners by elk; 4) Description of interactions between elk and other ungulates and identification of interactions that could detrimentally affect specific ungulate species; 5) Determination of human impacts on elk behavior and distribution in the Park; and 6) Description of elk age structure, productivity, and survivorship during 1987-88 and development of population goals that are consistent with Park management goals.
Yellowstone Lake: An Evaluation of Patterns in Productivity
Authors: Romme W. , Knight D.
Published: July 2020

This study was initiated in 1982 to critically evaluate the evidence (Varley 1974, Shero and Parker 1977) that primary productivity in Yellowstone Lake has decreased during the last 1500 years with an accelerated decline in the last century. Our specific objectives were the following: (1) Assemble, summarize, and evaluate existing data and observations related to the past and present trophic status of Yellowstone Lake. (2) Identify all possible explanations for the observed pattern in lake productivity, both long-term (last 1500 years) and recent (last 100 years), and summarize and evaluate existing evidence to support or refute each proposed explanation. (3) Collect new data to test one attractive hypothesis that has been mentioned frequently but never examined closely, namely that changes in the nutrient status and productivity of the lake are related, at least in part, to the effects of large fires in the watershed (Varley 1974, Romme and Knight 1982).
Researchers at the Jackson Hole Biological Research Station and U.W.-N.P.S. Research Center with their Institutional Affiliations 1946-1987
Authors: National Park Service Research Center University of Wyoming
Published: July 2020

This section contains a list of researchers along with their institutional affiliations at the Jackson Hole Biological Research Station and the U.W.-N.P.S. Research Center from 1946-1987.
A Vegetation Study of Capitol Reef National Park
Authors: Heil Kenneth , Fleming Rich , Porter J. , Romme William
Published: July 2020

Capitol Reef National Park lies in a relatively unexplored region of southcentral Utah. The diversity in geology and the elevation gradient (3,500-9,000 feet) allows for diverse vegetation including endemic and rare taxa (Welsh and Chatterley 1985). Previous floristic studies have been conducted in San Rafael Swell (Harris 1980) and the Henry Mountains (Neese 1981); however, aside from classification of coniferous habitat types (Youngblood and Mauk 1985), no community studies have been done in this region.
The Evaluation of Developing Shoreline Communities and Potential for Natural Vegetation in Glen Canyon National Recreation Area, Arizona-Utah
Authors: Waring Gwendolyn
Published: July 2020

This research was initiated in November, 1988, to evaluate plant communities developing along the shoreline of Glen Canyon National Recreation Area in northern Arizona and southern Utah. One goal of this research is to determine the species composition of these communities and their distribution on representative substrate types throughout the recreation area. Secondly, the interactions of native and exotic plant species present in the recreation area will be evaluated experimentally, to determine the feasibility of establishing populations of native species in these plant communities which, currently, are largely comprised of the exotic riparian tree species tamarisk, Tamarix ramosissima.
Life History Strategies of the Montane Vole, Microtus montanus
Authors: Jannett, Jr. Frederick
Published: July 2020

Emphasis in microtine rodent biology has historically been placed on population regulation and the population cycle. Until recently, little attention has been directed to behavior and sociality in microtine rodents, but work on the sociobiology of the montane vole (Jannett, 1978, 1980, 1981, 1982, 1984a) is serving to integrate various aspects of the biology of this species so that its life history characteristics can be interpreted in an evolutionary framework. Work undertaken in 1986 continues previously initiated surveys of various topics, such as synchrony of population events in different populations, survivorship, scent gland development, patterns of cranial and dental variation, population trends in a synpatric species of vole (M. logicaudus), and reproduction in a primary predator, the shorttail weasel (Mustela erminea).
Taxonomy and Ecology of Ectomycorrhizal Macrofungi of Grand Teton National Park
Authors: McKnight Kent
Published: July 2020

The 2 weeks field studies during June of 1987 continued work on that part of the previously stated objectives (e.g. McKnight, Harper, & McKnight, 1986) concerned with the inventory of fungal species in the Wyoming national parks, particularly Grand Teton National Park. The specific objectives were to (1) study species of the genus Cortinarius, section Leprocybe, particularly those in the subsection Zinziberati to further clarify species concepts and relationships of species collected earlier, especially those of the 1983 and 1987 collecting seasons; (2) obtain illustrations of species for a revision of the previously published Checklist (McKnight, 1982) and a fieldguide of common species in the Grand Teton-Yellowstone area now in preparation.
Hypogeous Fungi Occurance, Distribution and Mycorrhizal Hosts in Grand Teton National Park and John D. Rockefeller, Jr. Memorial Parkway
Authors: Miller Steven
Published: July 2020

The research underway has two primary objectives. The first objective is to collect and identify the species of hypogeous fungi associated with ectomycorrhizal vascular plant hosts occurring in Grand Teton National Park and the John D. Rockefeller Memorial Parkway (GTNP) over a 3 year period. Upon completion of the inventory, distribution, host specificity, substrate preference, phenology of fruiting, and relative abundance and importance of each species will be determined. The second objective is to document small mammal activity associated with sporocarps of the hypogeous fungi. The role that small mammals play in dispersal of hypogeous fungal spores into disturbed areas, and the relative dependance of the animals on different species of hypogeous fungi will be estimated. Upon collection of hypogeous fungi, hypotheses relating to their niche importance in natural, relatively undisturbed ecosystems in GTNP will be developed and tested, with emphasis on future research and management recommendations.
Field Metabolic Rates and Cohort Analysis in Microtine Rodents
Authors: Negus Norman , Berger Patricia , Pinter Aelita
Published: July 2020

The 1988 field season turned out to be a most unusual year. Extreme drought conditions prevailed for the entire growing season following an early melt-off. This provided an unprecedented opportunity to analyze cohort responses to an extreme environmental fluctuation in Microtus montanus. The basic objectives of this study are to analyze cohort responses to environmental fluctuations and to compare the energetic expenditures in two species of microtine rodents, Microtus montanus and Microtus logicaudus.
Giardia and Other Parasites of Small Mammals in Grand Teton National Park
Authors: O'Dell William , Watkins Raychel , Pinter Aelita
Published: July 2020

The objectives of this study are to document the effect of parasitism on vole populations and to investigate small mammals of Grand Teton National Park as potential reservoirs of human parasites. Immediate goals for this year were (1) to continue the documentation of the incidence and prevalence of parasites of these small mammals; (2) to determine the age at which Giardia infections are contracted by the Microtus host; (3) to identify ticks associated with these small mammal populations; and (4) to survey the animals for Babesia infections.
Pathogenic Naegleria from Thermal Springs
Authors: O'Dell William , Ramaley Robert
Published: July 2020

The long range goal of this research is to document the occurrence of pathogenic amoebae in thermal habitats that have been altered or disturbed by human activity. Immediate goals for this year included the improvement of isolation techniques and the field testing of a selective medium for the specific isolation of pathogenic Naegleria.
Submerged Shorelines of Jackson Lake, Wyoming: Do They Exist and Define Postglacial Deformation on the Teton Fault
Authors: Pierce Kenneth , Colman Steven
Published: July 2020

The Teton fault is one of the most active normal faults in the world, as attested by the precipitous high front of the Teton Range. Following glacial recession about 15,000 years ago (Porter and others, 1983), offset on the Teton fault southwest of Jackson Lake has totaled 60-80 feet (19-24 m) (Gilbert and others, 1983). In less than the last 9 million years, offset on the Teton fault has totaled 25,000-30,000 ft (7,000-9,000 m) (Love and Reed, 1971).
Climatic Factors, Reproductive Success and Population Dynamics in the Montane Vole, Microtus montanus
Authors: Pinter Aelita
Published: July 2020

Multiannual fluctuations in population density ("cycles") of small rodents have been known since antiquity (Elton 1942). Numerous hypotheses have been proposed to explain this phenomenon (for reviews see Krebs and Myers 1974, Finery 1980, Taitt and Krebs 1985). However, none of these hypotheses, alone or in combination, can explain the causality of cycles. The objectives of this long-term study are to determine whether environmental variables, possibly acting through reproductive responses, contribute to the multiannual fluctuations of the montane vole, Microtus montanus.
An Evaluation of Earthquake Hazards of the Grand Teton National Park Emphasizing the Teton Fault
Authors: Smith Robert , Byrd John , Bruhn Ronald
Published: July 2020

Documentation of the location, age and relationship of surface trace of the Teton fault zone to other geologic features is a prerequisite to a full understanding of seismic hazards associated with the fault. The University of Utah's mapping py David Sussong during the summer of 1987 documented the central portion of the fault trace. However, the northern and southern ends of the fault zone still required detailed mapping. Determination of the character of the fault in the areas south of Phillips Canyon and north of Webb Canyon can help to evaluate how movement on the fault would effect these areas, i.e., better evaluation of the relative seismic risk. Unfortunately, the extreme fire situation (the Huck fire started at the location of mapping) and the excessive time demands of the surveying reduced the amount of field mapping that we had planned for detailed geologic mapping. John Byrd, however, was able to do reconnaissance mapping in the Steamboat Mountain and Lizard Point area. In this area there is good evidence for the existence of several faults that are most likely splays of the Teton fault, that cross Jackson Lake and extend northward on the east side of the valley. Additional mapping is planned in this area next year.
Plant Community and Rare or Exotic Species Distribution and Dynamics in Cedar Breaks National Monument
Authors: Roberts David , Jean Catherine
Published: July 2020

This research program incorporates four primary objectives: (1) develop a comprehensive vegetation classification for Cedar Breaks National Monument, and to map the current and potential vegetation for the monument; (2) develop a vital attributes succession model which depicts the successional development and disturbance response of plant communities in Cedar Breaks; (3) map the distribution of rare or exotic species in the monument, specifying the habitats and plant communities in which these plants occur; and (4) identify and map the distribution of undisturbed plant communities to serve as baseline reference areas.
Analysis of Potential Sensitive Mammal Species for Long-Term Monitoring in Glacier National Park
Authors: Beiswenger Ronald
Published: July 2020

The primary objective of this project is to identify species of mammals in Glacier National Park that are sensitive to environmental change and thus may serve as useful indicators of this change in a monitoring program.
Ecology of Fescue Grasslands in Glacier National Park
Authors: Tyser Robin
Published: July 2020

Fescue grasslands are small, but ecologically significant, habitat types in several drainages within Glacier Park. An up-to-date, systematic study of the plant and animal communities of these grasslands is needed to assess factors which may potentially impact these habitats, including invasion of exotic vegetation, fire suppression, and human development (e.g. sewage line and road construction).
Characterization of Relict Communities For Monitoring Park Ecosystems in Glen Canyon National Recreation Area
Authors: Butler Jack , Dodd Jerrold
Published: July 2020

Grazing by domestic livestock is authorized on the Glen Canyon National Recreation Area and occurs on about 80% of the NRA lands. Concern over competing land uses has generated considerable interest in the direct and indirect effects of grazing on community structure and function (Kleiner and Harper 1972, 1977, Loope 1977, Jefferies and Klopatek 1987). The primary objectives of this study are to: (1) identify and evaluate the abiotic and biotic factors influencing the stucture and species composition of relict and grazed pinyonÂ­juniper, black brush ricegrass, and ricegrass grassland communities, and (2) select, refine and validate a system that can be used to field monitor condition and trend of relict and grazed communities.
Reclamation of Disturbed Lands in Glen Canyon National Receation Area
Authors: McKell Cyrus
Published: July 2020

Successful establishment of vegetation in regions such as the Glen Canyon National Recreation Area (NRA) requires the most favorable sequence of weather events possible. In addition to favorable weather, soil conditions must be such that transplanted roots are placed in contact with moist soil and can rapidly grow out into the surrounding area (unrestricted by compaction). Only infrequently do plants establish naturally from seeds in the harsh conditions of the Glen Canyon NRA. Thus, the objectives for the study were to review the literature on artificial revegetation in arid regions and to establish test plots in accord with current weather conditions, especially with regard to periods of drought or precipitation.
Late-Quaternary Vegetational and Climatic History of the Yellowstone/Grand Teton Region
Authors: Barnosky Cathy
Published: July 2020

The research underway focuses on the vegetational history of the Greater Yellowstone Ecosystem and the response of plant communities to environmental changes of varying intensity and duration. Four studies are in progress and at different stages of completion. In two investigations, processes operating on time scales of centuries and millennia are being studied to reconstruct the long-term environmental changes of the last 14,000 years. In a third study, a time scale of decades or less helps to clarify the nature of Yellowstone's northern range prior to and since the establishment of the Park. Finally, focusing on a time scale of years or less, we are investigating the sedimentary inputs in the aftermath of the 1988 fires to determine the processes by which lake sediments record fire events. An examination of the paleoecologic record on these different time scales provides information on the relative sensitivity of plant communities and lake systems to long-term and short-term disturbances, and adds to our knowledge of the postglacial history of the northern Rocky Mountains.
Changes in Geomorphic Processes in the Snake River Following Impoundment of Jackson Lake and Potential Changes Due to 1988 Fires in the Watershed
Authors: Marston Richard , Shroder John , Schmitt James
Published: July 2020

Rivers are dynamic features of the landscape whose characteristics vary over time and space with changes in environmental controls. The Snake River in Grand Teton and Yellowstone National Parks has responded to the impoundment of Jackson Lake and subsequent changes in the operation of Jackson Dam. The 1988 fires in the Snake River watershed may also affect channel morphology. Whether a new system equilibrium might be attained and the extent to which the effects of past events might persist in the fluvial landscape are two critical questions that need to be addressed for the Snake River. The stability of the Snake River, in turn, will affect the quantity and quality of riparian habitat critical to fish and wildlife in the park. Stream channel dynamics of the Snake River in Grand Teton National Park are also intimately tied to issues of floodplain delineation and management, the aesthetic value of the river, and the quality of recreational float trips.
Taxonomy and Ecology of Ectomycorrhizal Macrofungi of Grand Teton National Park
Authors: McKnight Kent , Moser Meinhard , Thiers Harry , Ammirati Joseph
Published: July 2020

The 1989 field studies continue the inventory of macrofungi known to occur in the Grand Teton-Yellowstone Park area. The long-term objectives of this study are: 1. to determine which species grow in forest, range, and pasturelands in and around Grand Teton National Park; 2. to gain a better understanding of their role in the ecosystem; and 3. to prepare descriptions, keys, and illustrations for the common species.
Feral Horse Distribution, Habitat use and Population Dynamics in Theodore Roosevelt National Park
Authors: Marlow Clayton , Gagnon Leonard , Hovland Elena , Irby Lynn
Published: July 2020

Description of the ecological niche feral horses fill in Theodore Roosevelt National Park requires information on reproductive rates, home range size, individual and band affinity to home ranges, food and shelter requirements and seasonal diets. Therefore, the identification of individual animals and their social groups or bands was the initial objective of this study.
Changes in Vegetation Associated with the Removal of Prairie Dogs
Authors: Bennett Barry , Bock Jane
Published: July 2020

From 1938 to 1982 the total acreage of Black-tailed prairie dog (Cynomys ludovicianus) towns in Wind Cave National Park increased from 290 to 750 ha. In 1982 a management plan was introduced that reduced the area covered by prairie dog towns to 290 acres. The objective of this study is to monitor vegetation changes that occur following the removal of prairie dogs. These data will prove useful in developing management plans for the removed prairie dog towns and also provide useful data on the vegetation and seed bank composition on the Wind Cave National Park grasslands.
Effects of 1988 Fires on Ecology of Coyotes in Yellowstone National Park: Baseline Preceding Possible Wolf Recovery
Authors: Crabtree Robert , Hornocker Maurice
Published: July 2020

Fifteen healthy coyotes (Canis latrans) were captured from 25 September through 25 October 1989 in the Lamar Valley and Blacktail Plateau areas of the northern range of Yellowstone National Park. Six males and nine females weighed an average of 14.1 kg. Only three of the 15 captured were six months-old which suggests low population productivity. After six weeks of radio-tracking all 15 were in the general vicinity of capture. Initially, 7-8 appear to be alpha breeding adults. Pack size appears large and initial minimum counts averaged four adults per group. Pilot studies of direct visual observation and fixed-station radio-telemetry appear very promising. Sixty-five miles of scat-survey transects have been laid out and plans to capture 15 more coyotes at carcasses in specific areas are underway.
Insect Response to the 1988 Fires in Yellowstone National Park
Authors: Lavigne Robert , Lockwood Jeffrey
Published: July 2020

Objectives 1) Determine the types of alterations in insect communities that invade fire-altered habitats; 2) Through comparison of burned and unburned areas, determine those species which are eliminated or reduced in numbers and those species that are added or increase in numbers due to the effects of the forest fires of 1988; and 3) From the impressions gained in field work associated with this project, recommend study directions for future entomological/ecological studies.
Gray Wolf Prey Base Ecology in the North Fork Flathead River Drainage
Authors: Marcum C. , Pletscher Daniel , Weigand John , McLellan Bruce
Published: July 2020

The overall objective of this research is to study gray wolf (Canis lupus) ungulate interrelationships in a multi-prey system. This study will focus on elk (Cervus elaphus); others will focus on white-tailed deer (Odocoileus virqinianus) and moose (Alces alces). The study is being conducted in the North Fork of the Flathead River drainage, in Montana and British Columbia, Canada. Work will be concentrated on the western side of Glacier National Park, the main area of wolf recovery.
Remote Sensing of Vegetation Recovery in Grasslands after the 1988 Yellowstone Fires
Authors: Merrill Evelyn , Marrs Ronald
Published: July 2020

In 1988, we developed an algorithm to predict green herbaceous biomass in sagebrush grassland communities of elk summer range using Landsat multi-spectral scanner (MSS) data (Merrill et al. 1988). Our objectives during this contract period were (1) to improve this predictive model and (2) to use the model for predicting vegetation recovery on grasslands burned in 1988.
Spatial Heterogeneity of Burn Severity and First-Year Vegetation Responses Following Fire on Subalpine Plateaus in Yellowstone National Park
Authors: Turner Monica , Gardner Robert , Romme William
Published: July 2020

The 1988 fires that burned in Yellowstone National Park presented ecologists with a unique opportunity to investigate ecological responses to large-scale fires (Christensen et al. 1989, Knight and Wallace 1989). The Yellowstone fires created an extremely heterogeneous landscape in terms of both the overall burning patterns and the variable fire severity within burned areas. Large fires rarely consume the entire forest because of the influence of wind variations, topography, vegetation type, natural fire breaks, and the time of day that the fire passed through (Rowe and Scotter 1973, Wright and Heinselman 1973, Van Wagner 1983). Direct fire effects such as tree mortality and organic matter consumption are related to locally variable parameters such as moisture content (Brown et al. 1985, Peterson and Ryan 1986, Ryan et al. 1988), and fire severity and return intervals are often strongly influenced by topographic and edaphic variability (Habeck and Mutch 1973, Romme and Knight 1981, Hemstrom and Franklin 1982, Whitney 1986). Therefore, burned landscapes generally contain areas of low as well as high intensity fire, usually in a complex mosaic (Van Wagner 1983). These variable fire intensities result in a heterogeneous pattern of burn severities (effects of fire on the ecosystem), as well as islands of unburned vegetation. The influence of burn severity on plant reestablishment following fire is well documented (e.g., Lyon and Stickney 1976, Rowe and Scotter 1973, Viereck 1983, Ryan and Noste 1985), and the importance of the effects of limited burns and low-intensity fires on the vegetation mosaic has been recognized (Habeck and Mutch 1973, Rowe 1983). However, few studies have dealt explicitly with the spatial variation of fire effects in a systematic and quantitative way.
Effects of Fire on Hypogeous Fungi, Spore Dispersal and Dependent Flora Establishment in Soils
Authors: Miller Steven , Stanton Nancy , Williams Stephen
Published: July 2020

In our initial survey of dispersal of spores into areas disturbed by the 1988 Huckleberry burn, in the John D. Rockefeller Memorial Parkway, we focused on small mammal dispersal of hypogeous ectomycorrhizal fungi which had been touted as a primary means of dispersal (Trappe and Maser 1977, Ure and Maser 1982), and the recruitment and physiognomy of conifer seedlings germinating in the burned areas. Interestingly, the small mammals captured at the Huck burn sites were feeding on both epigeous and hypogeous, as well as, mycorrhizal and non-mycorrhizal fungi. The seedlings that had germinated in the burned areas were non-mycorrhizal until late in the season. These results are somewhat contradictory to hypotheses offered in the literature. For these reasons, additional objectives, such as including both hypogeous and epigeous ectomycorrhizal fungi, were established to examine the process of ectomycorrhizal colonization more closely.
Vegetation Distribution in Badlands National Park
Authors: Butler Jack , Batt James
Published: July 2020

During the course of the 1990 field season a total of 143 sites were sampled, primarily within the Sage Creek Wilderness Area. Specific study sites were selected with use of soil survey photo-orthoquad maps. Once located, the vegetation which best represented the plant community residing on that soil type was selected for detailed study using the cover class system as described by Daubenmire (1959). The data collected during the 1990 field season is currently undergoing compilation in preparation for statistical analysis. No major problems were encountered during the field season which will limit our ability to meet project objectives.
Rangeland Recovery Potential: Soil Seed Content and Seed Viability
Authors: Butler Jack , Paintner Kara
Published: July 2020

In most plant communities, soil contains a seed bank (population of dormant seeds), (Harper 1977), which provides a partial record of past and present vegetation (Major and Pyott 1966, Johnson and Anderson 1986). Seed banks are continuously rejuvenated by a "seed rain", from vegetation located on- and off-site. If existing communities are disturbed or destroyed, the seed bank provides a potential source of propagules during succession (Egler 1954, Connell and Slatyer 1977). Consequently, seed banks may serve as an index in predicting what vegetation changes might occur if environmental conditions are favorable for germination (Harper 1977). The objectives of this study are to 1. evaluate the viable seed bank within grazed and relict pinyon-juniper and blackbrush/Indian ricegrass communities in Glen Canyon National Recreation Area (GCNRA), 2. assess the ability of these communities to recover following a disturbance, using their respective seed banks as indicators of recovery potential, and 3. address the suitability of using seed banks to monitor and predict community level composition changes in response to various intensities of grazing.
Relict Communities for Monitoring Park Ecosystems in Glen Canyon National Recreation Area
Authors: Butler Jack , Bich Brian , Schmidt Cheryl
Published: July 2020

Grazing by domestic livestock is authorized in Glen Canyon National Recreation Area and continues on about 80 percent of the park. Concern over competing land uses has generated considerable interest in the direct and indirect effects of grazing on vegetation, small mammal, and avian community structure and function. The primary objectives of this study are: 1. to identify and evaluate the abiotic and biotic factors influencing the structure and species composition of relict and grazed pinyon-juniper and blackbrush/lndian ricegrass communities, and 2. to select, refine and validate a system that can be used to field monitor condition and trend of relict and grazed communities. It is the goal of this project to develop a method of qualitatively assessing and monitoring community condition and trend using a combination of quantitative community attributes which are sensitive to grazing by domestic livestock; and which can be easily implemented and interpreted within the management objectives of GCNRA.
Feeding Selectivity of Montane and Long-Tailed Voles
Authors: Jannett, Jr. Frederick
Published: July 2020

Microtus longicaudus exhibits relatively stable numbers while M. montanus has dramatic fluctuations in some habitats. The study sites for M. montanus have been chosen to include primary and secondary habitat, and proximate and isolated habitat patches. Vegetation has heretofore not been quantitatively analyzed. The purpose of the research begun in 1989 is to ascertain how selectively these species feed, and to assess vegetation as a factor in demographic processes in the two species.
Giardia and Other Parasites of Small Mammals in Grand Teton National Park
Authors: O'Dell William , Watkins Raychel , Moshier Suzanne , Pinter Aelita
Published: July 2020

The objectives of this study are to document effects of parasitism on vole populations, and to determine the potential of small mammals of Grand Teton National Park to serve as reservoirs of human parasites. Specific goals for this year were: 1. to continue surveying small mammals for Babesia microti; 2. to collect and identify ticks found with these animals; 3. to determine if Ixodes eastoni is a tick vector of B. microti; 4. to determine the incidence of Campylobacter spp. in these small mammals; and 5. to continue documentation of the occurrence of Giardia as an intestinal parasite of the montane vole.
Immersive Mobile Telepresence Systems: A Systematic Literature Review
Authors: Silva Rodrigo Luis de Souza da , Ferreira Lohan Rodrigues Narcizo , Pereira Lidiane Teixeira
Published: July 2020

Telepresence can be defined as a system that provides remote collaboration between people in different locations, creating the feeling that both users share in fact the environment. The advances in communication, media and internet, has made possible the popularization of these systems. Smartphones have become increasingly powerful in processing, less expensive and more widespread. A single device combines various sensors, one or more cameras and internet connection, thus a potential hardware for telepresence applications. The main objective of this paper is to present a Systematic Literature Review to identify the main characteristics of immersive telepresence systems designed for mobile environment and to analyze research opportunities that can be further exploited or optimized. This research revealed that the development of immersive telepresence systems for mobile devices has increased in recent years, but is not yet widespread.
The views of carers, people living with dementia and healthcare practitioners about the value of online information and peer support
Authors: White Caroline , Dunn Rosie , Wolverson Emma , Zafeiridi Evi
Published: July 2020

This article reports on research into the development of a website (Caregiverspro-MMD) intended for carers and people living with dementia. Carers, people living with dementia and healthcare practitioners were invited to explore a prototype of the website. Information was sought about: whether they thought the website would be useful; the functions and resources they would require; and their views about using an online resource. Interviews and focus groups identified support for engaging with peers online and accessing information. Concerns about online safety and the tone of websites were also indicated. Support for learning was also highlighted as a need for some.
Integrated waveguide true time delay beamforming system based on an SOI platform for 28  GHz millimeter-wave communication
Authors: Han Yun , Shi Shuangjin , Jin Rongting , Wang YunXiang , Qiu Qi
Published: July 2020

In this paper, we propose an on-chip waveguide beamforming system for a 28 GHz millimeter-wave signal based on silicon-on-insulator (SOI) technology. The system consists of four true time delay (TTD) lines, each of which consists of nine Bragg gratings with different periods. The minimum period of the grating is 312 nm, and the maximum period is 344 nm. By optimizing the position of the Bragg grating in the adjacent TTD lines, a time delay difference can be generated between the adjacent channels. By adjusting the operation wavelength of the optical carrier, the TTD lines can provide 9 different beamforming direction angles from

−

60

∘

to 60° when the direction angular resolution is 15°. This proposed system has a useful application prospect in the phased array antennas of millimeter-wave communication.
Broadband and high-extinction-ratio polarization beam splitter on tilted subwavelength gratings waveguides
Authors: Yang Jinye , Dong Yue , Xu Yin , Zhang Bo , Ni Yi
Published: July 2020

A compact asymmetrical directional coupler (ADC), which is composed of a strip and a tilted subwavelength gratings (TSWG) waveguide, is proposed to realize a broadband and high-extinction-ratio polarization beam splitter (PBS). In addition to conventional SWG structural parameters, such as its period and duty cycle, a TSWG waveguide provides an extra degree of freedom to solely adjust the TE modal effective index for more accurate phase matching. Hence the TE polarization state is coupled more efficiently in the ADC system, and then the extinction ratio (ER) is consequently improved. The simulation of our proposed device demonstrated a higher coupling efficiency and an ultrahigh ER of 34.2 dB for the TM polarization state at the center wavelength around 1550 nm. The operating bandwidth of the TM polarization state defined as the spectral range, with ER higher than 20 dB, is determined to be as broad as 75 nm. And, with an assisted hybrid plasmonic waveguide at the end of the cross port, the achieved bandwidth of the TE polarization state is as broad as 133 nm. They are much broader than those of other DC/ADC implemented PBS devices. Moreover, further analysis shows that the tilting angle of the TSWG waveguide has much higher fabrication tolerance than changing SWG duty cycle.
Introduction to the JOCN special issue on future PON architectures enabled by advanced technology
Authors: Bonk René , Nesset Derek , Prat Josep , Ruffini Marco , Gaudino Roberto
Published: July 2020

This JOCN Special Issue, which spans the September and October 2020 issues, investigates the future of passive optical networks (PONs) in light of new enabling technologies that are currently under consideration. The papers present a broad overview of topics of current interest, across both the physical and network layers. They investigate how new technologies (e.g., higher-speed direct detection transceivers, coherent systems, advanced digital signal processing, and new optoelectronic components) and new network-layer approaches may drive the medium- to long-term evolution of PONs.
Monolithic InGaN/GaN photonic chips for heart pulse monitoring
Authors: Chen L. , Wu Y. P. , Li K. H.
Published: July 2020

Photo-plethysmography (PPG) making use of a monochromic light source and a photoelectric sensor is a non-invasive detection method to record blood volume changes in vessels and can be used to extract cardiac-related heart pulse information. Here, we demonstrated the fabrication of a monolithic photonic chip by integrating light-emitting diodes (LEDs) with photodetectors (PDs) on the same GaN-on-sapphire wafer containing InGaN/GaN multi-quantum wells (MQWs). The MQWs simultaneously act as light emitters in the LEDs and detectors in the PDs, and their mechanism has been studied. The fabricated chip operating in reflection mode is flip-chip bonded on a flexible polydimethylsiloxane (PDMS) strip, enabling the sapphire surface in close contact with the skin. The optical and electrical properties of the LED and PD have been thoroughly characterized, confirming that the PDs using identical MQWs can detect the reflected light from the LEDs. By attaching the chip to the wrist, PPG heart pulse signals from the arterial blood flow can be obtained, thereby verifying the feasibility of the proposed monolithic chip.
Serrano-Dolader, D. (2019). Formación de palabras y enseñanza del español LE/L2. Londres/Nueva York: Routledge. 350 Páginas
Authors: González Corrales Leticia
Published: July 2020

Reseña: Serrano-Dolader, D. (2019). Formación de palabras y enseñanza del español LE/L2. Londres/Nueva York: Routledge. 350 Páginas
González-Fernández, Adela y Rodríguez-Tapia, Sergio (eds.) (2019). Estudios lingüísticos en torno al turismo: terminología, cultura y usuarios. Valencia: Tirant Humanidades. 290 Páginas
Authors: Rodríguez Faneca Cristina
Published: July 2020

Reseña: González-Fernández, Adela y Rodríguez-Tapia, Sergio (eds.) (2019). Estudios lingüísticos en torno al turismo: terminología, cultura y usuarios. Valencia: Tirant Humanidades. 290 Páginas
Concordancia variable en español de herencia: estudio del grupo nominal
Authors: Orejudo González Juan Pablo
Published: July 2020

Los hablantes de herencia en la zona norte de Texas tienen español como lengua familiar e inglés como lengua vehicular. El español queda relegado al habla coloquial, dejando al margen el registro formal y la escritura. Por este motivo, la competencia lingüística en español de estos hablantes no es completa y existen problemas concretos con la concordancia dentro de grupos nominales con tres constituyentes (artículo, nombre y adjetivo). En esta investigación se realizaron entrevistas semidirigidas a una muestra de hablantes de herencia de tres generaciones sociolingüísticas (G1, G2 y G3) para crear un corpus oral. Se analizaron un total de 24 entrevistas para contabilizar el número de grupos nominales con tres constituyentes utilizados y relacionarlos con las variables de generación sociolingüística, género del hablante, posición del ítem con respecto al verbo (preverbal, posverbal o aislado) y concordancia interna (género y número). Los resultados obtenidos muestran que el uso de grupos nominales compuestos disminuye mientras que los casos sin concordancia aumentan porcentualmente según crece la generación sociolingüística.
Rice-Based Products for Consumers in Sierra Leone
Authors: Bangura Kemoh , Conteh Rugiatu , Sow Mohamed , Mahmood Nazir
Published: July 2020

Different rice-based products were promoted among rural women and youths through demonstrations, participatory evaluation and training in their use for income generation. The utilization of the rice-based products willcontributeto enhancefood self sufficiency and increase the income ofwomen and youths.
COGNITIVE-BEHAVIORAL THERAPY: AN ALLY OF THE UNIFIED HEALTH SYSTEM
Authors: Nunes Rafael Zaneripe de Souza , Tuon Lisiane , Souza Rosimeri Vieira da Cruz de , Gomes Karin Martins
Published: July 2020

Abstract: The Unified Health System goes through several challenges, including the crisis related to public financing. The consequences generated by this crisis also affect the mental health network, which proves to be one of the most fragile networks in the public health system. As a result of the barriers encountered, this article seeks to analyze in the scientific literature how Cognitive-Behavioral Therapy can contribute to the better use of public spending through its objective and brief techniques. The study is characterized by a qualitative approach carried out through a non-systematic literature review in the data sources SCIELO, BVS, PUBMED® and Google Scholar. Although the number of articles found in the national literature is limited, studies conducted outside the country demonstrate the effectiveness of CBT in public health systems, especially regarding the remission of users' symptoms and the cost-benefit of public spending. Keywords: Cognitive Behavioral Therapy; Public Health; Unified Health System; Government Financing.
SCHOOL MANAGEMENT MODELS: A COMPARATIVE STUDY BETWEEN TWO SCHOOLS IN JUAZEIRO DO NORTE
Authors: Melo Elisângela Maria de Oliveira , Dantas Sthelamarys Costa , Almeida Junior Raimundo Fernandes de , Dantas Stênia Costa , Silva Ananias Agostinho da
Published: July 2020

Abstract: This research arose from the need to analyze the school management models that are practiced in the municipal school system. The main objective was to understand if the school management nucleus has been promoting actions in favor of a more effective participation of the school community for the qualitative improvement of the teaching-learning process and if these actions fit in a democratic and participative management model or in a school administration model. To this end, a comparative study was carried out, with a qualitative approach, between two municipal schools in Juazeiro do Norte. Semi-structured interviews and field research for on-site observation were essential to consolidate the results. Lück, Libâneo, Silva, Paro, among others, were crucial for the theoretical foundation. According to the investigation, it was noticed that municipal schools are already able to carry out some actions that are considered to be participatory and democratic. However, these are punctual actions, which need to be improved, enabling more effective community participation in decisions, which will favor the institution in the development of decentralizing activities and of common interest to the entire community. It is worth mentioning that none of them carry out a work based entirely on a model of school administration. However, they still have a long way to go to be considered a truly democratic and participatory model, given that there are still remnants of centralizing actions, but which are already mixed with the participation of segments of education. Keywords: School management; Management Models; Democratic actions.
Compartilhar para revelar a prática dos narradores de passagem em hospitais
Authors: Antonio Mônica Roberta
Published: July 2020

Dada a importância em compartilhar a atuação de voluntários como narradores de histórias de passagem em hospitais, este artigo revela experiências do encontro narrativo em hospitais. Com base em relatos de narradores do projeto, ouvintes (pacientes, acompanhantes e equipe profissional de saúde) e pensadores como Walter Benjamin, Bruno Bettelheim, Hampatê Bà, Rachel Remen e o idealizador do projeto Luis Alberto de Abreu será feita uma síntese de intenções e ações dos narradores com a perspectiva de uma arte performática pautada na percepção poética, na oralidade e nas interfaces com a prática narrativa em sua função social.
Du geste piétique au geste poétique. L’engagement du corps dans le dispositif luisien.
Authors: Edwige CALLIOS
Published: July 2020

Cette étude interroge la participation du corps et des modalités sensorielles dans le processus créatif des odes luisiennes, de l’acte créateur proprement dit à ses multiples rejeux gestuels, vocaux et scripturaux. Après avoir éclairé la piété de Fray Luis de León, elle montre comment de son geste piétique découle tout naturellement son geste poétique, un geste conciliant dans le dispositif luisien l’âme et le corps et comment, placé au cœur de ce dispositif, l’engagement médiumnique du corps expliquerait en partie la modernité, sans cesse renouvelée, des odes luisiennes.
O corpo no cinema silencioso em Béla Balázs e F.W. Murnau
Authors: Ferreira Blaud Clêmie
Published: July 2020

O objetivo deste artigo é estabelecer relações entre o pensamento do filósofo húngaro Béla Balázs e alguns filmes do cineasta alemão F.W. Murnau no que concerne aos estudos sobre o corpo no cinema silencioso. Para Balázs, gestos e expressões faciais constroem uma linguagem, possibilitando a compreensão do destino das personagens. A linguagem do corpo no cinema mudo relaciona-se, por um lado, com a língua do homem em seu estado original; por outro, com as poses e expressões já pesquisadas em outras formas de artes: cênicas e visuais. Alguns filmes de Murnau servem de exemplo para pensar sobre essas questões. Trata-se de buscar uma interface horizontal entre filosofia e arte, considerando seu modo de coexistência no periodo em que o cinema não falava.
Olhar e não ser vista
Authors: Moraes Carolina
Published: July 2020

A partir de uma proposição - não ver a própria imagem -, este artigo é um escrito sobre uma experiência de autoinvisibilidade e seus desdobramentos. Além de relatar sobre este período de desvio de olhares (de espelhos / imagens) e uma possível relação dessa ação com o modo de escrever, traz reflexões e intersecções com textos e trabalhos artísticos de autores que tratam sobre questões como a invisibilidade e a fronteira.
A relação entre arte, paisagem e ambiente na obra de Burle Marx
Authors: Alves Cauê
Published: July 2020

Esse artigo aborda a exposição “Burle Marx: arte, paisagem e botânica”, realizada no Museu Brasileiro de Escultura e Ecologia entre dezembro de 2018 e maio de 2019. Trata-se de um texto que elabora noções centrais da curadoria da mostra, que buscou ampliar o entendimento do projeto de Burle Marx para os jardins do MuBE, assim como o conhecimento do legado do artista. A exposição apresentou uma série de obras de fotógrafos e artistas contemporâneos que dialogam com a produção de Burle Marx em paisagismo, pintura, escultura, relevo, design e ambiente. O artigo aborda os exemplares coletados por Burle Marx em expedições, expostos no museu, que possibilitaram a descoberta de novas espécies de botânica, contribuindo para a compreensão de seu trabalho de cientista amador e ambientalista. A exposição no MuBE, sobre a qual refletimos, colaborou para um debate interdisciplinar sobre a produção de um dos mais relevantes artistas, paisagistas e ecologistas do século XX.
Situações de fronteira
Authors: Sampaio Ferraz Tatiana
Published: July 2020

Conversa realizada com a artista Georgia Kyriakakis em seu ateliê, na cidade de São Paulo, em janeiro de 2020. Baiana de nascimento, Georgia viveu e cresceu na capital paulista, onde construiu sua carreira como artista e como professora universitária. Graduada pela FAAP no final dos anos 1980, com formação ancorada no desenho, vê sua produção tomar novos rumos a partir da década de 1990, quando passa a se interessar pela materialidade do mundo, explorada através dos objetos cotidianos, do comportamento da matéria artística repertoriada e das forças implicadas nos corpos em relação ao espaço. No encontro, conversamos sobre sua formação, sobre como a geografia entrou no seu trabalho de arte, sobre a(s) fronteira(s) existente(s) entre obra e mundo e sobre o sentido do fazer artístico hoje.
Hubungan antara Religiusitas dan Persepsi terhadap Kesehatan dengan Kebahagiaan pada Pria yang Menikah di Usia Dewasa Awal
Authors: Jannah Elsa Rohmatul
Published: July 2020

Happiness is the condition and ability of a person to feel positive emotions from the past, in the present, and for the future. Factors that influence happiness are money, marriage, social life, negative emotions, age, health, education, climate, race, gender, and religiosity. The purpose of this study was to find out whether there was a relationship between religiosity and perceptions of health and happiness in men who married in early adulthood. The data analysis used in this study is a multiple linear regression analysis showing an F value of 4.58> 3.18 (Table F). The results of this study indicate the relationship between religiosity and perceptions of health and happiness in men who married in early adulthood. The finding of 0.15 in the Summary R Square Model table means that religiosity and perceptions of health have an effect of 15% on happiness, while 85% are influenced by other factors.[Kebahagiaan adalah kondisi dan kemampuan seseorang untuk merasakan emosi positif di masa lalu, masa depan dan masa sekarang. Faktor-fsaktor yang mempengaruhi kebahagiaan adalah uang, perkawinan, kehidupan soisal, emosi negatif, usia, kesehatan, pendidikan, iklim, ras, dan jenis kelamin, religiusitas. Tujuan penelitian ini adalah untuk mengetahui apakah terdapat hubungan antara religiusitas dan persepsi terhadap kesehatan dengan kebahagiaan pada pria yang menikah di usia dewasa awal. Analisis data yang digunakan dalam penelitian ini adalah analisis regresi linier ganda menunjukkan nilai F sebesar 4,58>3,18 (F Tabel), hasil penelitian ini menunjukkan terhadap hubungan antara religiusitas dan persepsi terhadap kesehatan dengan kebahagiaan pada pria yang menikah di usia dewasa awal. Dalam tabel Model Summary R Square sebesar 0,15, artinya religiusitas dan persepsi terhadap kesehatan memberikan pengaruh sebesar 15% terhadap kebahagiaan, sedangkan 85% dipengaruhi dari faktor lain.]