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Journal articles on the topic 'Lotic ecosystem Quality'
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1
Rojano, Fernando, David Huber, Ifeoma Ugwuanyi, Vadesse Noundou, Andrielle Kemajou-Tchamba, and Jesus Chavarria-Palma. "Net Ecosystem Production of a River Relying on Hydrology, Hydrodynamics and Water Quality Monitoring Stations." Water 12, no. 3 (March 12, 2020): 783. http://dx.doi.org/10.3390/w12030783.
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Flow and water quality of rivers are highly dynamic. Water quantity and quality are subjected to simultaneous physical, chemical and biological processes making it difficult to accurately assess lotic ecosystems. Our study investigated net ecosystem production (NEP) relying on high-frequency data of hydrology, hydrodynamics and water quality. The Kanawha River, West Virginia was investigated along 52.8 km to estimate NEP. Water quality data were collected along the river using three distributed multiprobe sondes that measured water temperature, dissolved oxygen, dissolved oxygen saturation, specific conductance, turbidity and ORP hourly for 71 days. Flows along the river were predicted by means of the hydrologic and hydrodynamic models in Hydrologic Simulation Program in Fortran (HSPF). It was found that urban local inflows were correlated with NEP. However, under hypoxic conditions, local inflows were correlated with specific conductance. Thus, our approach represents an effort for the systematic integration of data derived from models and field measurements with the aim of providing an improved assessment of lotic ecosystems.
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Et al., Salman. "Monitoring Lotic Ecosystem by the Application of Water Quality Index (CCMEWQI)." Baghdad Science Journal 17, no. 1 (March 1, 2020): 0023. http://dx.doi.org/10.21123/bsj.2020.17.1.0023.
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Water Quality Index (WQI) as a tool to assess the water quality status provides advice related to the use of water quality monitoring data and it is a way for combining the complex water quality data into a single value or single statement.The present study was conducted on Al- Hilla river in the middle of Iraq from August 2012 to July 2013 at five selected stations in the river, from Al- Musaib city to Al- Hashimya at the south of Hilla to determine its suitability for aquatic environment (GWQI), drinking water (PWSI) and irrigation (IWQI).This index offers a useful representation of the overall quality of water for public or any intended use as well as indicating pollution, water quality management, and decision making. According to the obtained results, it can be concluded that the EC, TSS, Total hardness, Ca, Mg, DO, BOD5, and NO3 moved away from the desired standards when the temperature rises. The variable of value of this index may be due to increasing the ration of organic matters and converting the carbonate to bicarbonate. The results recorded high value of calcium and magnesium more than the standard value of WHO and IQS (50 mg/l and high value of total hardness more than 500 mg/l). Irrigation water quality index (IWQI) in the study sites were ranged between 66-83 ranged between fair and good.
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Farcaş, Adina Nicoleta, Angela Curtean-Bănăduc, and Claudiu Vasile Kifor. "ECOLOGICAL ASSESSMENT AS A FIRST STEP IN THE EVALUATION OF ECOSYSTEM SERVICES PROVIDED BY LOTIC ECOSYSTEMS." Management of Sustainable Development 5, no. 2 (December 1, 2013): 9–12. http://dx.doi.org/10.2478/msd-2013-0009.
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ABSTRACT The ecosystems offer to the socio-economic system a series of goods and services derived from their processes and biodiversity. Ecosystem services offered by a river are at their highest potential when the river status is close to the natural one. Once the river is affected by human impact due to resources exploitation, hydro technical works, water abstraction or improper land use, the ecological status declines and the ecosystem services become scarce. This is why an ecological assessment is necessary in order to establish the connection between the ecosystem services and the human impact. In this paper, the ecological assessment of Timiș River was done, allowing the classification of the river in four sectors with different ecological statuses, associated with the various human impacts that differently affect the quality of the water, the riverbed and the flooding area.
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Tokatli, Cem, and Yasin Baştatli. "ASSESSMENT OF TOXIC METALS IN SEDIMENTS OF MERIÇ, TUNCA AND ERGENE RIVERS BY USING BIOLOGICAL AND ECOLOGICAL RISK INDICES." CBU International Conference Proceedings 4 (September 26, 2016): 785–90. http://dx.doi.org/10.12955/cbup.v4.851.
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The Meriç River, the longest river of the Balkans, is the most important aquatic ecosystem within the Thrace Region of Turkey, along with its main tributaries, the Tunca and Ergene Rivers. In this study, the sediment quality of Meriç, Tunca, and Ergene Rivers was evaluated by using the Potential Ecological Risk Index (RI) and the Biological Risk Index (mERM-Q), both widely used methods in sediment quality assessment studies, to assess the ecological and biological risks of heavy metals within the river ecosystems. According to the results of the Biological Risk Index, nickel and chromium displayed the highest risk factors, and in terms of the Potential Ecological Risk Index, cadmium yielded the highest risk factor across all the investigated lotic ecosystems.
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Cortez, Daniela P., Ivor O. Growns, Simon M. Mitrovic, and Richard P. Lim. "Effects of a gradient in river regulation on the longitudinal trends in water quality and benthic algal and macroinvertebrate assemblages in the Hunter River, Australia." Marine and Freshwater Research 63, no. 6 (2012): 494. http://dx.doi.org/10.1071/mf11210.
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River regulation impacts lotic ecosystem processes; however, the effect of a gradient of regulation on these attributes has rarely been studied. This study examined the effects of a river regulation gradient on longitudinal trends in water quality and benthic algal and macroinvertebrate assemblages in three tributaries of the Hunter River, New South Wales, Australia. Longitudinal patterns were expected to differ across rivers, with recovery being proportional to its regulation gradient. Significant differences in longitudinal trends were tested using permutational multivariate analysis of variance (PERMANOVA) through exploration of the river by distance from source interaction. Multi-dimensional scaling (MDS) ordination plots identified sites responsible for any significant interaction observed. Similarity percentage analysis (SIMPER) analyses identified variables/taxa responsible for differences at sites below dams. BEST analyses identified environmental variables best explaining biological assemblage patterns. Significant differences in longitudinal trends were observed for all attributes. Increases in the regulation gradient most affected macroinvertebrate assemblages, followed by water quality and benthic algal assemblages respectively. Downstream recovery was absent in the heavily regulated river at its most downstream site, whereas recovery was observed on corresponding sites of the moderately regulated river. The study suggests that a gradient in river regulation increases the magnitude of disruption of lotic ecosystems, with recovery dependent on this gradient.
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Minns, Charles K., Victor W. Cairns, Robert G. Randall, and James E. Moore. "An Index of Biotic Integrity (IBI) for Fish Assemblages in the Littoral Zone of Great Lakes' Areas of Concern." Canadian Journal of Fisheries and Aquatic Sciences 51, no. 8 (August 1, 1994): 1804–22. http://dx.doi.org/10.1139/f94-183.
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Karr's Index of Biotic Integrity (IBI) approach provides a biological measure of ecosystem health using a wide spectrum of metrics which can be extracted from fish catch data obtained using standardized methods. Extensive electrofishing surveys of littoral fish assemblages, conducted in three Great Lakes' Areas of Concern, provided the basis for developing a lacustrine IBI that was 12 metrics of three broad types: (i) species composition, (ii) trophic composition, and (iii) abundance and condition. In contrast with lotic IBIs where diversity and abundance metrics have mostly been used, several biomass metrics were adopted to accommodate the large size range of lentic fishes. The variability of repeated measures was low enough to allow valid testing of intertransect differences with three to five samples per transect. Comparisons among survey areas showed significant differences consistent with the varying levels of ecosystem degradation. Analyses of mean IBI values with measures of submerged vegetation density and cover by transect produced significant positive correlations. This IBI developed for the Great Lakes' littoral zone, both by design and by demonstrated correlations, integrates the effects of four main factors influencing fish assemblages and hence revealing ecosystem health: exotic fishes, water quality, physical habitat supply, and piscivore abundance.
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Bere, T., and JG Tundisi. "Epipsammic diatoms in streams influenced by urban pollution, São Carlos, SP, Brazil." Brazilian Journal of Biology 70, no. 4 (November 2010): 920–30. http://dx.doi.org/10.1590/s1519-69842010000500002.
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Epipsammic diatoms have important implications for ecosystem processes in lotic environments. Most of the studies on benthic diatoms concentrate on epilithic diatoms and very little is known about epipsammic diatoms. The objective of this study was to assess epipsammic diatom communities in streams in relation to environmental conditions. Epipsammic diatoms and water quality sampling was done at 7 sites during summer base flow period (2008). Forward stepwise multiple regression and canonical correspondence analysis (CCA) were used to determine environmental gradients along which species vary with physical and chemical variables. A total of 112 diatom species distributed among 44 genera were recorded. Altitude and the process of eutrophication played a significant role in structuring diatom communities in the study region.
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Ely, Damon T., and J. Bruce Wallace. "Long-term functional group recovery of lotic macroinvertebrates from logging disturbance." Canadian Journal of Fisheries and Aquatic Sciences 67, no. 7 (July 2010): 1126–34. http://dx.doi.org/10.1139/f10-045.
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Clear-cut logging rapidly affects stream macroinvertebrates through substantial alteration of terrestrial–aquatic resource linkages; however, lesser known are the long-term influences of forest succession on benthic macroinvertebrate assemblages, which play key roles in stream ecosystem function. We compared secondary production and standing crops of detritus in two mountain headwater streams within Coweeta Hydrologic Laboratory, North Carolina, USA, as part of a long-term, paired-watershed investigation of macroinvertebrate recovery from whole-catchment logging. Mean annual habitat-weighted abundance and biomass in the disturbed stream (catchment entirely logged 26 years prior) did not differ from that of the reference stream, and secondary production was only 0.8 g ash-free dry mass (AFDM)·m–2·year–1 greater in the disturbed stream (disturbed, 10.1; reference, 9.3). Taxonomic composition, shredder–scraper ratios, and North Carolina biotic index scores were more similar between streams than in previous years. However, mean annual standing crops of benthic organic matter (BOM) were much lower in the disturbed stream (167 g AFDM·m–2) than in the reference stream (339 g AFDM·m–2), and the disturbed stream supported greater macroinvertebrate biomass per unit BOM. We suggest that despite similarities in macroinvertebrate structure and function, past logging activity continues to influence consumer–resource relationships in the disturbed stream through enhanced resource quality.
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Rice, S. P., M. T. Greenwood, and C. B. Joyce. "Tributaries, sediment sources, and the longitudinal organisation of macroinvertebrate fauna along river systems." Canadian Journal of Fisheries and Aquatic Sciences 58, no. 4 (April 1, 2001): 824–40. http://dx.doi.org/10.1139/f01-022.
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Tributary confluences are sites along a main channel where, because of the introduction of water and (or) sediment, the water volume, bed sediment character, and water quality of the mainstream can change abruptly. These shifts ensure that abiotic gradients seldom vary smoothly or continuously for distances of more than 100102 km along any river system. The ways in which tributaries and related sediment recruitment points structure longitudinal changes in physical habitat are examined. Variables of importance to stream biota are affected and, in turn, it is suggested that the arrangement of tributaries and related features is an important control on the longitudinal organisation of macroinvertebrate benthos at moderate spatial scales. A new model is presented that stresses the importance of hydrological and sedimentological networks for organising lotic fauna. The link discontinuity concept emphasises the discontinuous nature of lotic ecosystem gradients, addresses the importance of tributaries in unregulated as well as regulated rivers, and extends, to its logical conclusion, the limited recognition of tributary influence in the river continuum concept. A case study from British Columbia, Canada, illustrates the general merit of the new model.
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Lee, Sang-Jae, Eui-Haeng Lee, and Kwang-Guk An. "Lotic Ecosystem Health Assessments Using an Integrated Analytical Approach of Physical Habitat, Chemical Water Quality, and Fish Multi-Metric Health Metrics." Polish Journal of Environmental Studies 27, no. 5 (May 30, 2018): 2113–31. http://dx.doi.org/10.15244/pjoes/78044.
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Journal, Baghdad Science. "Diversity Measurement Indices of Diatom Communities in the Tigris River within Wasit Province, Iraq." Baghdad Science Journal 15, no. 2 (June 3, 2018): 117–22. http://dx.doi.org/10.21123/bsj.15.2.117-122.
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The study was conducted to measure diatom species diversity in the lotic ecosystem across the Wasit Province for 12 months. The quantitative study of diatoms (phytoplankton) was investigated in the Tigris river. The density of algae was ranged from 60989 cell×103/l to 112780.82 cell×103/l in the five sites. These algae were belonging to 39 genera. The richness index values ranged from 1.53 at site 5 in January 2016 to 6.34 at site 1 and June2015. Shannon-Weiner diversity index (H´) was 2.33 in February 2016 and 3.72 in June 2015 both values at site 3, whereas Evenness index was 0.54 at site 5 in March2016 and 0.98 at site 1 in both August2015 and May2016. The lack of homogeneity of the appearance of species indicates the dominance of a few species with high densities, which is an indicator of the existence of environmental pressure. All studied indices showed that the Tigris River quality is suitable for the living aquatic life or may be slightly affected by the pollutants.
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Zieliński, Piotr, and Tomasz Suchowolec. "Hydromorphological assessment of the anastomosing section of the Narew River after restoration." Limnological Review 13, no. 1 (March 1, 2013): 51–59. http://dx.doi.org/10.2478/limre-2013-0006.
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AbstractFive parallel channels of the Narew River (NE Poland) were hydromorphologically assessed with the River Habitat Survey (RHS) method. Four out of the five studied channels were partly separated from the functioning system of the anastomosing river by a dike for more than 20 years, and were subjected to gradual overgrowing and shallowing. In the 1990’s and in 2002, a number of renaturisation measures were implemented, restoring sufficient discharge for the channels to make them active again. The Habitat Modification Score (HMS) obtained as a result of the survey only classifies the fragment ecologically to the third class of streams with high HMS value in the case of the current main channel of the Narew River (largely formed in an artificial manner). This suggests substantial anthropogenic changes in the river channel and its vicinity. The aggregate values of the Habitat Quality Assessment (HQA) index suggest the preservation of numerous environmentally valuable elements at all of the five studied sites of the anastomosing Narew River system. This even concerns channels which remained almost separated and functioned as oxbow lakes for more than 20 years. The highest HQA values were recorded in the case of the channel constituting the main channel before the regulation, and a neighbouring regulated channel currently fulfilling the function of the main water course in this cross-section. In spite of long-term negative changes, the studied fragment of the ecosystem of the anastomosing river is distinguished by high resistance to “anthropogenic stress”, and high capacity for spontaneous restoration of a state close to the natural one. Although lotic ecosystems constitute elements of the natural environment particularly sensitive to anthropopressure, they retain the ability to regenerate for a long time, under the condition of providing them with relevant hydrological and ecological conditions.
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Rojas-Mendizabal, Veronica Alexandra, Arturo Serrano-Santoyo, Roberto Conte-Galvan, Salvador Villarreal-Reyes, and Raul Rivera-Rodriguez. "Estimation of quality of experience (QoE) in e-Health ecosystems." Ingeniería e Investigación 37, no. 2 (May 1, 2017): 52–59. http://dx.doi.org/10.15446/ing.investig.v37n2.57664.
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This article proposes a framework to design and implement e- Health interventions in a comprehensive manner. We draw on complexity science to study the interplay of the ecosystem, the behavior and interactions among its agents. We provide a platform to estimate the Quality of Experience (QoE) to assess the relationship between technology and human factors involved in e-Health projects. Our aim is to estimate QoE in e-Health ecosystems from the perspective of complexity by adopting a methodology that uses fuzzy logic to study the behavior of the ecosystem’s agents. We apply the proposed framework to a remote diagnosis case by means of an ultrasound probe through a satellite link. Despite the ambiguities for determining QoE, the experiment demonstrates the applicability of the framework and allows to stressing the importance of human factors in the implementation of e-Health projects.
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Nalang, Amanda T. C., Herni E. I. Simbala, Nio Song Ai, and Ratna Siahaan. "STRUKTUR DAN KOMPOSISI FITOPLANKTON DI BAGIAN HULU SUNGAI SALUESEM, MINAHASA, SULAWESI UTARA." JURNAL ILMIAH SAINS 15, no. 2 (August 14, 2015): 105. http://dx.doi.org/10.35799/jis.15.2.2015.9226.
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STRUKTUR DAN KOMPOSISI FITOPLANKTON DI BAGIAN HULU SUNGAI SALUESEM, MINAHASA, SULAWESI UTARA Amanda T.C Nalang1), Herni E.I. Simbala1), Nio Song Ai1), Ratna Siahaan1) ABSTRAK Sungai Saluesem termasuk perairan terbuka yang mengalir (lotik) yang berasal dari Gunung Mahawu, Minahasa dan bermuara ke Teluk Manado yang terletak di Kota Manado, Sulawesi Utara. Hulu sungai merupakan daerah konservasi tanah dan air yang sangat penting dalam mempertahankan kualitas air Sungai Saluesem dari hulu hingga hilir. Kegiatan manusia dari permukiman, pertanian dan peternakan yang terus meningkat di hulu Sungai Saluesem dapat menyebabkan terjadinya penurunan kualitas perairan. Tujuan penelitian adalah menganalisis struktur dan komposisi fitoplankton bagian hulu Sungai Saluesem, Minahasa, Sulawesi Utara. Penelitian dilaksanakan dari Oktober 2014 sampai Desember 2014. Penelitian menggunakan metode purposive random sampling. Pengulangan dilakukan sebanyak 3 kali ulangan di tiap titik pengamatan, dengan demikian terdapat enam titik (2 x 3) pengamatan di hulu.Fitoplankton yang didapatkan di hulu Sungai Saluesem sebanyak 1700 individu dari 32 spesies dan 3 kelas. Kelas fitoplankton yaitu Bacillariophyceae, Chlorophyceae, dan Cyanophyceae. Kepadatan tertinggi berasal dari Kelas Bacillariophyceae 2214 individu/m3 (84%) diikuti Kelas Chlorophyceae 349 individu/m3 (13%) lalu Cyanophyceae 72 individu/m3 (3%). Indeks keanekaragaman di Hulu Sungai Saluesem yaitu 2,92 yang termasuk keanekaragaman sedang. Distribusi Spesies fitoplankton di bagian hulu merata dengan indeks kemerataan (E) yaitu 0,64. Tidak ada spesies fitoplankton yang mendominasi di Hulu Sungai dengan indeks dominansi mendekati nol yaitu 0,18. Kualitas air Sungai Saluesem bagian hulu dikategorikan tercemar ringan dengan indeks H’ yaitu 2,92. Sumber pencemaran di lokasi penelitian diduga berasal dari kegiatan rumahtangga (MCK) dan peternakan. Kata Kunci: Sungai Saluesem, Struktur Fitoplankton, Komposisi fitoplankton, Kualitas Air, Sulawesi Utara STRUCTURE AND COMPOSITION OF PHYTOPLANKTON OF UPSTREAM SALUESEUM RIVER, MINAHASA, NORTH SULAWESI ABSTRACT Saluesem River is a lotic ecosystem that started from Mahawu Mountain, Minahasa and to Manado Bay, North Sulawesi. Upstream Salusem River is an important soil and water conservation area for to maintain quality of Salusem River from upstream to downstream. Increasing human activities from settlement, agriculture and animal husbandry can decrease quality of Salusem River. The aim of this research was to analysis phytoplankton structure and composition of upper Salusem River, Minahasa, North Sulawesi. The research was conducted from October 2014 to December 2014. The study applied purposive random sampling method with three repetitions. The number of phytoplanktons were 1700 individuals from 32 species and 3 classes, namely Bacillariophyceae, Chlorophyceae, and Cyanophyceae. The highest density is Bacillariophyceae 2214 ind/m3 (84%) followed by Chlorophyceae 349 ind/m3 (13%) and Cyanophyceae 72 ind/ m3 (3%). The diversity index of Saluesem River phytoplankton is 2.92 categorized into middle diversity. Evenness Index is 0.64 showed equal distribution. There is no dominant species showed by dominance index is 0.18. Based on diversity index H’ is 2.92, water quality of Salusem River upstream are categorized into light pollution. Different sources of pollution were household, agriculture, animal husbandary activities. Keywords: River Saluesem, structure phytoplankton, composition phytoplankton, water quality, North Sulawesi,
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Polese, Francesco, Massimiliano Vesci, Orlando Troisi, and Mara Grimaldi. "Reconceptualizing TQM in service ecosystems: an integrated framework." International Journal of Quality and Service Sciences 11, no. 1 (March 18, 2019): 104–26. http://dx.doi.org/10.1108/ijqss-10-2017-0087.
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PurposeThe purpose of this paper is to reconceptualize Total Quality Management (TQM) in the light of service ecosystem view through the identification of dimensions underlying both the approaches and a clarification of the relationship between the two theories.Design/methodology/approachAn overview on service ecosystems and on TQM is conducted, with particular focus on the main dimensions of the two frameworks derived from extant research. Consequently, an assessment of the key features of both theories is performed.FindingsThe work identifies four recurring dimensions in TQM, suggesting their rereading in the light of the assessed five recurring dimensions of service ecosystem. Moreover, a reconceptualization of TQM in the light of service ecosystem view is proposed.Originality/valueThis paper compares and proposes an integration between TQM and service ecosystem view. Such a reinterpretation of “traditional” view of quality management in the light of current trend of Service-Dominant (S-D) logic can represent a starting point for further research aimed at analysing the mechanisms underlying joint production of value in service delivery.
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Cardoso, Ariane Silva, Silvio Mario Pereira da Silva Filho, Anthony Epifanio Alves, Cacilda Michele Cardoso Rocha, and Maristela Casé Costa Cunha. "Fitoplâncton como Bioindicador de Eventos Extremos na Bacia do Rio Una, Pernambuco, Brasil (Phytoplankton as Bioindicator of Extreme Events in River Basin Una, Pernambuco, Brazil)." Revista Brasileira de Geografia Física 6, no. 4 (November 14, 2013): 697. http://dx.doi.org/10.26848/rbgf.v6i4.233063.
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A Bacia do Rio Uma é uma das Bacias Hidrográficas mais importantes do Estado de Pernambuco, e vem enfrentando desastres causados por cheias. Em resposta as últimas enchentes ocorridas no Estado, o Governo de Pernambuco desenvolveu um Sistema de Controle de Cheias, com uma programação para o Rio Una, de construção de quatro barragens de contenção, represamento e regularização de abastecimento de água nas cidades circundantes. A qualidade da água após a transição de um ambiente lótico para lêntico poderá ser alterada e dependerá de diversos fatores ambientais. O fitoplâncton responde com boa fidelidade a essas mudanças. Nas bacias estudadas, foram identificados 45 táxons infragenéricos de organismos fitoplanctônicos pertencentes ao grupo das Ochorophyta (40%), Chlorophyta (20%), Charophyta (20%), Cyanophyta (13%) e Euglenophyta (7%). Sendo a divisão Ochrophyta mais representativa com relação à riqueza e frequência de ocorrência. Não ocorrem valores expressivos de densidade nas amostragens. Assim, estudar a composição e a dinâmica populacional da comunidade fitoplanctônica é de fundamental importância para o entendimento da sustentação e conservação desse ecossistema, sobretudo por se tratar de um ambiente em transição e pela carência de estudos na região. ABSTRACT A River Basin is one of the most important Watershed State of Pernambuco, and this has been facing disasters caused by floods. In response to the recent floods occurred in the State, the Government of Pernambuco developed a Flood Control System, with a schedule for the Rio Una, four-building check dams, impoundment and regulation of water supply in the surrounding towns. The water quality after the transition from a lotic to lentic may change and depend on various environmental factors. Phytoplankton responds with good fidelity to these changes. Basins studied, 46 were identified taxa of phytoplankton organisms belonging to the group Ochorophyta (40%), Chlorophyta (20%), Charophyta (20%), Cyanophyta (13%) and Euglenophyta (7%). As the division Ochrophyta more representative with respect to wealth and frequency of occurrence. No significant values occur in sampling density. Thus, studying the composition and population dynamics of phytoplankton is of fundamental importance for the understanding and support of the conservation of this ecosystem, mainly because it is a transitional environment and the lack of studies in the region. Keywords: Phytoplankton, Una River basin, impounding water.
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Nadeau, L. B., C. Li, and H. Hans. "Ecosystem mapping in the Lower Foothills Subregion of Alberta: Application of fuzzy logic." Forestry Chronicle 80, no. 3 (June 1, 2004): 359–65. http://dx.doi.org/10.5558/tfc80359-3.
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Predictive ecosite mapping involves developing computer models that consistently identify and map ecosystems. This method of predicting ecosystem occurrence on the landscape uses basic inventory information and expert knowledge, and is an effective integrated planning tool for providing a record of the location and spatial distribution of ecosystems within a management area. Fuzzy logic technology can be used to computerize essential elements of ecosystem identification, and the outputs can be linked to a Geographic Information System for map production. A pilot study was undertaken on the application of this technology to the Alberta Ecological Land Classification database and the resulting ecosite map for a township located in central Alberta (Tp42R9W5). The range of attributes used in the program was constrained by the attributes recorded on mapped polygons. Three maps with suitable attributes were available for the township studied: a Digitized Elevation Model map, an Alberta Vegetation Inventory map, and a reconnaissance soil survey map. Attributes of all polygons from all three maps were compiled and seven attributes (humus form, Ah thickness, surface texture, aspect, organic thickness, slope angle, and Alberta Vegetation Inventory moisture regime) were chosen to produce a computerized program for ecosite identification. Four sets of data were used to calibrate the program, as well as a small-plot data set collected from the township studied. The computer program was used to analyze the polygon data corresponding to two sets of data collected in the field and resulted in 72% and 70% similarity between the choices of experts and of the computer program. The quality of the original polygon attributes contributed to errors in identification. In addition, the reconnaissance soil survey map gave only an estimate of four attributes (Ah horizon thickness, organic thickness, humus form, and surface texture). Key words: ecosystem classification, site classification, fuzzy logic, fuzzy sets, predictive ecosystem mapping, predictive site mapping
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Gambarov, Vusal, Debora Sarno, Xhimi Hysa, Mario Calabrese, and Alberto Bilotta. "The role of loyalty programs in healthcare service ecosystems." TQM Journal 29, no. 6 (October 9, 2017): 899–919. http://dx.doi.org/10.1108/tqm-02-2017-0019.
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Purpose The purpose of this paper is to investigate the role of patient loyalty programs in healthcare environment, generally considered as a way to engage patients and potentially increase the perception of service quality of healthcare systems, but not systematically analyzed at the state of the art. Design/methodology/approach The Service Dominant logic and, in particular, the service ecosystem construct are adopted and integrated with relevant literature references and empirical studies on a sample of patients. Loyalty programs are interpreted as institutions coordinating actors of the healthcare service ecosystem. Findings A conceptual model linking loyalty programs to patients and healthcare providers’ co-creation practices, engagement, satisfaction, trust, and perception of service quality is build and explained based on literature and a case study, finding that loyalty programs can strengthen the adaptability and the well-being of a healthcare service ecosystem. Practical implications This contribution can have a significant impact on the design of new and the evolution of current healthcare service ecosystem, providing interesting insights to practitioners on the topic of loyalty programs, both for their development and their benefits. Originality/value The paper revised previous healthcare service ecosystems and highlights the role of the loyalty program institution at each level and between levels of the ecosystem.
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Schulz, Thomas, Markus Böhm, Heiko Gewald, Zehra Celik, and Helmut Krcmar. "The Negative Effects of Institutional Logic Multiplicity on Service Platforms in Intermodal Mobility Ecosystems." Business & Information Systems Engineering 62, no. 5 (May 25, 2020): 417–33. http://dx.doi.org/10.1007/s12599-020-00654-z.
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Abstract Digitalization is changing the mobility sector. Companies have developed entirely new mobility services, and mobility services with pre-digital roots, such as ride-sharing and public transport, have leveraged digitalization to become more convenient to use. Nevertheless, private car use remains the dominant mode of transport in most developed countries, leading to problems such as delays due to traffic congestion, insufficient parking spaces, as well as noise and air pollution. Emerging intermodal mobility ecosystems take advantage of digital advances in mobility services by providing individual, dynamic and context-aware combinations of different mobility services to simplify door-to-door mobility and contribute to the reduction of private car use. However, the service platforms are limited in terms of functional range, for example they may lack integrated ticketing and rely on static data, which makes intermodal mobility inconvenient. This article adopts the service-dominant logic perspective to analyze service ecosystems for intermodal mobility and their service provision. Drawing on traditional institutional literature, the authors question the assumption that service logic is dominant for all actors of a service ecosystem. By applying activity theory, the article illustrates how an institutional logic multiplicity among actors can negatively affect the functional range of service platforms. The results of a qualitative study in Germany show that, in particular, the state logic of some actors, which is characterized by the obligation to provide mobility, impairs the quality of service platforms in supporting citizens in intermodal mobility.
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Bere, T., and JG Tundisi. "Biological monitoring of lotic ecosystems: the role of diatoms." Brazilian Journal of Biology 70, no. 3 (March 19, 2010): 493–502. http://dx.doi.org/10.1590/s1519-69842010005000009.
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Increasing anthropogenic influence on lotic environments as a result of civilisation has captured public interest because of the consequent problems associated with deterioration of water quality. Various biological monitoring methods that provide a direct measure of ecological integrity by using the response of biota to environmental changes have been developed to monitor the ecological status of lotic environments. Diatoms have been used extensively in this regard and this review attempts to summarise the basic concepts associated with biological monitoring using benthic diatoms. Where possible, examples from work carried out in Brazil are used.
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F. Breidbach, Christoph, Roderick Brodie, and Linda Hollebeek. "Beyond virtuality: from engagement platforms to engagement ecosystems." Managing Service Quality 24, no. 6 (November 4, 2014): 592–611. http://dx.doi.org/10.1108/msq-08-2013-0158.
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Purpose – Understanding the role and implications of information and communication technology (ICT) in service is the key research priority for service science and the management of service quality. The purpose of this paper is to address this priority by providing insights into the role of “engagement platforms” (EPs), physical or virtual customer touch points where actors exchange resources and co-create value. Despite an emerging body of literature that emphasizes the fit between engagement and technology-enabled service contexts, EPs remain ill-defined. Specifically, little is known about the particular types of EPs, their characteristics, and implications for the performance of service ecosystems and managing service quality. Design/methodology/approach – By drawing on two illustrative case studies, the authors investigate and theorize about the characteristics and dynamics of EPs in virtual/physical contexts, and identify if, how and to what extent configurations of EPs may enhance resource exchange within and across service ecosystems. Findings – By building on emerging research at the service/engagement interface, the paper introduces the notion of the “engagement ecosystem,” as a configuration of individual, mutually dependent EPs that represent specific interactivity-facilitative loci. The paper explicates the relevance of the model and highlight opportunities for future research in this emerging field of inquiry. Research limitations/implications – The work addresses the call for research at the intersection of ICT and service science through development and application of the engagement ecosystem concept. The theorizing process draws on two illustrative case studies, and thereby provides a theoretical contribution and foundation for future research in this emerging area. Practical implications – The authors guide managerial decision-making regarding the implementation, adoption, and utilization of engagement ecosystems. Furthermore, the nature of “engagement” as a bridging concept implies that the work can help managers to operationalize service-centric thinking. Originality/value – By showing how individual EPs form engagement ecosystems, the paper bridges theory and practice, and offers new insight in the realm of practical application of the S-D logic.
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Schleiter, Ingrid M., Dietrich Borchardt, Rüdiger Wagner, Thomas Dapper, Klaus-Dieter Schmidt, Hans-Heinrich Schmidt, and Heinrich Werner. "Modelling water quality, bioindication and population dynamics in lotic ecosystems using neural networks." Ecological Modelling 120, no. 2-3 (August 1999): 271–86. http://dx.doi.org/10.1016/s0304-3800(99)00108-8.
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Filimon, Marioara Nicoleta, Patricia Drăguşin, Cristina Drăguşin, Roxana Popescu, Maria Mugur, Claudia Ratis, and Sorin Voia. "Fisheries Management Influence on Some Ecophysiological Groups of Bacteria in Lotic Ecosystems Of the Cefa Nature Park (Romania)." Transylvanian Review of Systematical and Ecological Research 15, no. 1 (June 1, 2013): 73–80. http://dx.doi.org/10.2478/trser-2013-0007.
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ABSTRACT The nutrient circuit in aquatic ecosystems may seem simple, but the truth is that nutrient biochemical circuits are rather complex. Circuits are established by a series of interconnected biological, chemical and physical processes. Human activities lead to degradation of wet fields. Water quality and quantity have been changed, especially the quantity of polluting substances. Bacteriological studies in lotic ecosystems from Cefa Nature Park were carried out to establish four ecophysiologic microorganism groups: nitrogen-fixing bacteria, amonifying bacteria, nitrifying bacteria and denitrifying bacteria. Recorded values differ greatly from one species to the other according to sample points and season. Higher values in autumn are due to an increased intake of organic matter at the end of the vegetation period. Decomposition processes are intensified because of a growing number of microorganisms. Fishery management influences qualitative and quantitative variations in the microorganism communities of the lotic ecosystems in Cefa Natural Park.
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Manser Payne, Elizabeth H., Andrew J. Dahl, and James Peltier. "Digital servitization value co-creation framework for AI services: a research agenda for digital transformation in financial service ecosystems." Journal of Research in Interactive Marketing 15, no. 2 (February 11, 2021): 200–222. http://dx.doi.org/10.1108/jrim-12-2020-0252.
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Purpose Innovative firms have rapidly developed artificial intelligence (AI) capabilities into their service ecosystems, essentially changing perceptions of what is service quality and service delivery in their respective industries. Nonetheless, the issues surrounding AI services remain relatively unknown. The purpose for this paper is to offer a digital servitization framework for understanding how AI services impact value perceptions, consumer engagement and firm performance measures. The authors use the financial service ecosystem to explore this topic. Design/methodology/approach The authors explore relevant literature on digital servitization, service-dominant logic and AI/disruptive innovation. Next, a conceptual framework, organized by AI-Service Exchange Antecedents, Context of AI Usage and Digital Servitization Consequences, is developed. The authors conceptualize consequences for consumers and firms. Findings The main findings suggest that the linkages between consumers, financial institutions and fintech companies with AI usage in a service ecosystem should be identified; how value is created among multiple SD Logic-AI network actors should be analyzed; and the effects of AI-consumer interactions (lower-level and higher levels of engagement) on firm performance measures should be explored. Research limitations/implications The conceptual framework identifies gaps in the literature and suggests research questions for future studies. Practical implications This paper may assist practitioners with the development of AI-enabled banking activities that involve direct consumer engagement. Originality/value To the authors’ best knowledge, this research agenda is the first comprehensive framework for understanding value co-creation in the context of AI in financial services, linking antecedents, usage and consequences.
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Boes, Kim, Dimitrios Buhalis, and Alessandro Inversini. "Smart tourism destinations: ecosystems for tourism destination competitiveness." International Journal of Tourism Cities 2, no. 2 (May 3, 2016): 108–24. http://dx.doi.org/10.1108/ijtc-12-2015-0032.
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Purpose – Grounded in service-dominant (S-D) logic, the purpose of this paper is to explore the core components of smartness to present a framework for the development of the smart tourism destination. Design/methodology/approach – The paper explores the core components of smartness through case study analysis of well-established smart cities. Findings – The paper conceptualises smartness and argues ICT, leadership, innovation and social capital supported by human capital are core components of smartness. Although ICT is a critical enabler for smart tourism destinations, it is insufficient on its own to introduce smartness. The combination of hard and soft smartness components within a S-D logic ecosystem structure holds the potential for sustained competitive advantage and enhancement of quality of life of both residents and tourists in smart tourism destinations. Originality/value – The paper extends the application of S-D logic to the context of smart tourism destinations, specifically to examine the smartness concept as a means for competitiveness in tourism destinations.
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Díaz-Méndez, Montserrat, Michael Saren, and Evert Gummesson. "Considering pollution in the higher education (HE) service ecosystem." TQM Journal 29, no. 6 (October 9, 2017): 767–82. http://dx.doi.org/10.1108/tqm-03-2017-0031.
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Purpose From a service ecosystem perspective, the purpose of this paper is to examine students’ evaluation surveys as a tool used by most higher education (HE) institutions worldwide to measure teaching quality with consequences for tenure and promotion. Design/methodology/approach This study is based on the service-dominant (S-D) logic and specifically on the service ecosystem approach. Through an in-depth literature review and analysis the authors explore the effect of student evaluation surveys on the value co-creation process, describe the role they play in the HE ecosystem and critically evaluate their efficacy. The research is based on empirical data from the literature and previous studies findings. Findings The literature review highlights the detrimental consequences of the use of students’ evaluation surveys for teachers and students and for the rest of actors of this service. The authors argue that institutions should embrace a service ecosystem perspective based on S-D logic. The authors highlight the role of institutions as moderators of the interactions between actors and, finally, the authors have introduced the concept of “service ecosystem pollution” which the authors define as the presence or introduction of disruptive elements in the service ecosystem adversely affecting the nature of value co-creation. Practical implications This study emphasizes the importance for HE institutions to embrace a service ecosystem approach so as to foster and preserve the value co-creation processes taking place within the interactions among the HE actors. Conclusions drawn from this paper suggest that HE institutions should focus on strategies such as investing in improving students’ and teachers’ operant resources rather than polluting the HE service ecosystem with the use of students’ evaluation surveys. Originality/value Hitherto there are no studies analyzing the tools HE institutions use to measure teaching quality from a service ecosystem perspective. The study is especially valuable due to the consequences and the use of these measures entails for teachers, students and society.
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Dirisu, Abdul-Rahman, John Ovie Olomukoro, and Ifeanyi Maxwell Ezenwa. "Physico-chemical trends in the sediments of Agbede Wetlands, Nigeria." Materials and Geoenvironment 64, no. 2 (July 1, 2017): 111–26. http://dx.doi.org/10.1515/rmzmag-2017-0009.
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AbstractThis study assessed the physico-chemical status of sediments in the Agbede Wetlands with the aim to create a reference archive for the Edo North catchment and to further identify the characteristics mostly influenced by the natural and anthropogenic activities going on at the watershed. Nutrients, zinc, nickel and lead were identified to be mostly of anthropogenic origin, while alkali metals and alkaline earth metals were from both anthropogenic and natural sources. The clustering of stations 1 and 4 indicates that the sediment quality in the lentic systems was not completely excluded from the lotic system, suggesting that principal component analysis (PCA) and cluster analysis (CA) techniques are invaluable tools for identifying factors influencing the sediment quality. The mean values of the particle size distribution were in the following order across the ecosystems: sand (61.86–80.53%) > silt (9.75–30.34%) > clay (7.83–13.89%). The contamination of the water bodies was primarily derived from agricultural run-offs and through geochemical weathering of the top soils. Therefore, our analysis indicates that the concentrations of cations, anions and nutrients in the sediments of the lotic and lentic ecosystems in Agbede Wetlands are not at an alarming level.
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Whittier, Thomas R., Robert M. Hughes, and David P. Larsen. "Correspondence Between Ecoregions and Spatial Patterns in Stream Ecosystems in Oregon." Canadian Journal of Fisheries and Aquatic Sciences 45, no. 7 (July 1, 1988): 1264–78. http://dx.doi.org/10.1139/f88-149.
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Multivariate analyses of biotic assemblages and physicochemical measures, species richness, diversity, and composition were used to evaluate the robustness of Omernik's ecoregion classification for small streams in the eight ecoregions of Oregon. Clearest differences were between the montane and nonmontane regions. For the three nonmontane regions, ordinations of fishes, macroinvertebrates, water quality, and physical habitat measures show the clearest differences, with the Willamette Valley ecoregion being consistently most unlike all other regions. Differences between the Columbia Basin and High Desert regions were clearest for water quality and physical habitat measures and fish assemblages. Differences among the montane regions were subtle. Of these regions, the East Cascade Slopes showed the greatest variability, as shown by the ranges of ordination scores for fishes, water quality, and physical habitat. Regional patterns in periphyton assemblages were markedly different from the patterns in the other groups of variables. Ecoregions can be used as a broad-scale geographic framework for classifying streams. This framework provides managers of lotic resources a useful alternative to river basins.
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Quiñones-Huatangari, Lenin, Luis Ochoa, Manuel Emilio Milla-Pino, José Federico Bazán, Oscar Andrés Gamarra, and Jesús Rascón. "Water quality index using fuzzy logic Utcubamba River, Peru." Revista de Ciencias Agrícolas 37, no. 1 (June 20, 2020): 6–18. http://dx.doi.org/10.22267/rcia.203701.124.
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Water is a fundamental nutrient in the life of any living being. Therefore, it is necessary to estimate its quality, because it is an issue of increasing concern countries around the world for reasons such as the health of the population, regional, national and international economic development, and the environmental quality of the ecosystems. One tool that has been used to know the state of the water is the water quality indexes (WQI). The objective of this research was to develop a WQI based on fuzzy logic, which allows for the estimation of water quality in the Utcubamba River. The methodology used was proposed by Icaga in 2007. To evaluate the proposed WQI called "Diffuse Water Quality Index" (DWQI), sixteen points from the sampling conducted by the Research Institute for Sustainable Development during October 2014 on the Utcubamba River and its tributaries were used. To validate the index, it was necessary to estimate the correlation coefficient R2 between the results obtained and those of the NSF WQI wáter quality index reported by the Water Research Center. This new index presented results and reasonable correlation, R2 = 0.81. It is concluded that DWQI can be used as a tool for decision making in the water management of the Utcubamba River.
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Bos, H. R., C. T. Bowmer, and M. C. T. Scholten. "Integral Risk Analysis as a Supporting Framework for Water Quality Management." Water Science and Technology 24, no. 10 (November 1, 1991): 343–46. http://dx.doi.org/10.2166/wst.1991.0327.
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The prevention of pollution in a marine ecosystem such as the North Sea has traditionally been approached from two angles i.e. (1) by controlling the disturbance at source and (2) by monitoring the quality of the marine environment and act when deleterious effects occur. These approaches are loosely based on the precautionary principle and on the concept of assimilative capacity, respectively. Although in principle different approaches, they are similar in practice as they both accept, rightly or wrongly, a certain input of pollutants to the marine environment. There remains however, a stubborn lack of information as to what qualitative and quantitative relationship exists between the input(s)/sources and consequently the distrubance or effects in the marine environment. Environmental stress in a marine ecosystem becomes visible when the dynamics of its elements deviate from their normal cycles or fluctuations. These observable end-effects are often the initial reason for concern, i.e. long after the process of disturbance is underway. It has always been difficult to interpret these mostly complex signals and relate the observations to primary causes. In order to handle the diversity of information and signals in the cause-effect chain between input(s)/sources and disturbance, the development of a comprehensive logic framework is needed.
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Kurdi, Heba, Bushra Alshayban, Lina Altoaimy, and Shada Alsalamah. "TrustyFeer: A Subjective Logic Trust Model for Smart City Peer-to-Peer Federated Clouds." Wireless Communications and Mobile Computing 2018 (2018): 1–13. http://dx.doi.org/10.1155/2018/1073216.
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Cloud computing plays a major role in smart cities development by facilitating the delivery of various services in an efficient and effective manner. In a Peer-to-Peer (P2P) federated clouds ecosystem, multiple Cloud Service Providers (CSPs) collaborate and share services among them when experiencing a shortage in certain resources. Hence, incoming service requests to this specific resource can be delegated to other members. Nevertheless, the lack of preexisting trust relationship among CSPs in this distributed environment can affect the quality of service (QoS). Therefore, a trust management system is required to assist trustworthy peers in seeking reliable communication partners. We address this challenge by proposing TrustyFeer, a trust management system that allows peers to evaluate the trustworthiness of other peers based on subjective logic opinions, formulated using peers’ reputations and Service Level Agreements (SLAs). To demonstrate the utility of TrustyFeer, we evaluate the performance of our method against two long-standing trust management systems. The simulation results show that TrustyFeer is more robust in decreasing the percentage of services that do not conform to SLAs and increasing the success rate of exchanged services by good CSPs conforming to SLAs. This should provide a trustworthy federated clouds ecosystem for a better, more sustainable future.
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Galdean, N. "Lotic ecosystems of Serra do Cipó, southeast Brazil: water quality and a tentative classification based on the benthic macroinvertebrate community." Aquatic Ecosystem Health and Management 3, no. 4 (December 2000): 545–52. http://dx.doi.org/10.1016/s1463-4988(00)00044-0.
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Galdean, N., M. Callisto, and F. A. R. Barbosa. "Lotic ecosystems of Serra do Cipó, southeast Brazil: water quality and a tentative classification based on the benthic macroinvertebrate community." Aquatic Ecosystem Health & Management 3, no. 4 (January 2000): 545–52. http://dx.doi.org/10.1080/14634980008650691.
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Stockmann, Keith D., Kevin D. Hyde, J. Greg Jones, Dan R. Loeffler, and Robin P. Silverstein. "Integrating fuel treatment into ecosystem management: a proposed project planning process." International Journal of Wildland Fire 19, no. 6 (2010): 725. http://dx.doi.org/10.1071/wf08108.
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Concern over increased wildland fire threats on public lands throughout the western United States makes fuel reduction activities the primary driver of many management projects. This single-issue focus recalls a management planning process practiced frequently in recent decades – a least-harm approach where the primary objective is first addressed and then plans are modified to mitigate adverse effects to other resources. In contrast, we propose a multiple-criteria process for planning fuel-treatment projects in the context of ecosystem management. This approach is consistent with policies that require land management activities be designed to meet multiple-use and environmental objectives, while addressing administrative and budget constraints, and reconciling performance measures from multiple policy directives. We present the process borrowing from the Trapper Bunkhouse Land Stewardship Project example to show the logic for conducting an integrated assessment of ecological and natural resource issues related to multiple management scenarios. The effects and trade-offs of the no-action scenario and proposed action alternatives are evaluated relative to silviculture, disturbance processes (including fire behaviour), wildlife habitat, noxious weeds, water quality, recreation and aesthetics, and economic contributions. Advantages and challenges of this project planning approach are also discussed.
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Troisi, Orlando, Savino Santovito, Luca Carrubbo, and Debora Sarno. "Evaluating festival attributes adopting S-D logic: The mediating role of visitor experience and visitor satisfaction." Marketing Theory 19, no. 1 (April 26, 2018): 85–102. http://dx.doi.org/10.1177/1470593118772207.
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To symbolize the importance of contextual factors of provision in the contemporary service era, in festival research, the term festivalscape has been proposed. Despite the large number of works investigating the construct, extant research does not adequately assess the systemic and interactive nature of festivals, which can be viewed as a set of interconnected elements. To bridge this gap, this article evaluates four festival attributes (atmosphere, service quality, people interaction and collateral services) according to service-dominant logic and service-ecosystem view. Current work examines a light festival organized in Salerno during the Christmas holiday using a sequential regression analysis, revealing the mediating role of experience and satisfaction in influencing behavioural intention.
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Mehta, Ridhima. "Optimal Design and Modeling of Sustainable Buildings Based on Multivariate Fuzzy Logic." International Journal of Sustainable Development and Planning 16, no. 1 (February 28, 2021): 195–206. http://dx.doi.org/10.18280/ijsdp.160120.
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The exemplary design of green buildings incorporates multiple correlated parameters that should be optimally selected and updated to ensure effective energy management and sustainable impact of building architecture on the ecosystem. In this paper, the adaptive modeling and development of such sustainable buildings with several unpredictable and qualitative attributes is implemented with multiple-input multiple-output (MIMO) fuzzy control system. The outputs of the proposed fuzzy corroborated sustainable building paradigm comprise of specific characteristics employed for assessing the optimal performance, viz. energy efficiency, user satisfaction, resources optimization, and environment quality. These diverse system criteria measured using the proposed fuzzy optimization model are plotted against their actual theoretical values for each data case. Furthermore, the sample dataset for the proposed sustainable building model is validated through simulation results in terms of mean absolute error and logarithmic quotient error in the estimation of various fuzzy output variables evolving with the dataset size.
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Gomes, Leonardo Fernandes, Hasley Rodrigo Pereira, Hugo De Oliveira Barbosa, Carla Albuquerque De Souza, and Ludgero Cardoso Galli Vieira. "Biomonitoring in Limnic Environments: A Scientometric Approach." Fronteiras: Journal of Social, Technological and Environmental Science 9, no. 2 (August 31, 2020): 53–67. http://dx.doi.org/10.21664/2238-8869.2020v9i2.p53-67.
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In the face of increasing human impacts, biomonitoring emerges as an approach to evaluate the status of these ecosystems. Our purpose was to evaluate the publications on biomonitoring in limnic environments and to answer the following questions: (i) What are the approaches in biomonitoring studies around the world? (ii) Are the countries' human development index (HDI) and the available water volume capable to influence publications on biomonitoring? (iii) How are distributed biomonitoring publications by biological groups (e.g., fish, plants, phytoplankton, zooplankton, periphyton, insects) and by environments (lotic and lentic)? To access the publications about biomonitoring in limnic environments, we performed a search in the Web of Science database, restricted between 1991 and 2016. The scientific interest in biomonitoring in limnic environments showed an increasing trend over the years. Furthermore, the countries that presented the highest number of biomonitoring publications had also high HDI values, which reflected high investments in research and development or specific legislation for water quality monitoring. Despite the significant relationship, the water volume was not a major factor influencing the research development. Our study revealed that fish, macroinvertebrates, and lotic environments were the most used for biological monitoring purposes.
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Masyuk, Natalya, Marina Bushueva, and Zinaida Bragina. "Innovative Business Model of the Cluster as an Ecosystem." SHS Web of Conferences 61 (2019): 01015. http://dx.doi.org/10.1051/shsconf/20196101015.
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Business modeling is an innovative form of representation of inter-firm interactions of enterprises and organizations, united by formal and informal economic relations. The business model is a graphic illustration of the structure of these relations, helping to understand their logic and complexity in the context of globalization. Networking and clustering are the responses to the global challenges of the external environment. In these conditions, new variants of an interaction of economic agents arise in conditions of uncertainty and risk. The most common form of intrafirm interaction in the conditions of one territory is clustering, which, as practice shows, have network structures. In our opinion, the purpose of the regional cluster as a network is to implement the key competencies of the territory and improve the quality of the economic situation in the region by improving the business climate of the environment. There are many efforts of scientists and business practitioners to design and make configurations for illustration of the cluster's relations and interactions. The main goal of this article is to show a new way of graphic design of clusters from the position of ecological approach instead of the UML. The article describes the configuration of the cluster business model in its interpretation as an innovative network ecosystem. Theoretical views about the cluster were extended in the direction of the configuration of its business model and the definition of its main structural elements. Particular attention is paid to the partnership interaction of the main groups of economic agents in the cluster, which include: key business structures, key educational organizations, key research organizations, and the state.
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Rodríguez-Hidalgo, Claudia, Diana Rivera-Rogel, and Luis M. Romero-Rodríguez. "Information Quality in Latin American Digital Native Media: Analysis Based on Structured Dimensions and Indicators." Media and Communication 8, no. 2 (April 16, 2020): 135–45. http://dx.doi.org/10.17645/mac.v8i2.2657.
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The current communicative ecosystem has profoundly transformed journalistic work and the media, generating with great eagerness the emergence of digital native media that do not follow the logic of their conventional peers. Although the advent of these media is not entirely negative, as they create multiple voices that contribute to pluralism, their quality has undoubtedly been questioned on several academic fronts. This work analyzes the most important Latin American digital native media by number of accesses (traffic), using a taxonomy of evaluation of dimensions of the informative quality, in which aspects such as informative sources, uses of international news agencies, correction of contents and factuality levels, ideological plurality in their opinion contents, among others, are taken into consideration. Of the emerging results, the ‘use of statistical indicators’ was the least rated (32.5%), mainly due to a lack of data journalism in the media studied. It is also worth noting that the indicator ‘comments and monitoring’ obtained the second-lowest rating, indicating an absence of conversation between the media and its audience through the comments section of each content.
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Allen, Patricia J., Zoe Brown, and Gil G. Noam. "STEM Learning Ecosystems: Building from Theory Toward a Common Evidence Base." International Journal for Research on Extended Education 8, no. 1-2020 (December 17, 2020): 80–96. http://dx.doi.org/10.3224/ijree.v8i1.07.
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An innovative system-building initiative known as the STEM Learning Ecosystems Community of Practice (SLECoP) is transforming U.S. STEM education through cross-sector partnerships between schools, afterschool and summer programs, libraries, museums, and businesses, among others. Although logic models exist to describe how SLEs can make positive contributions toward youth STEM learning in theory, it is unknown how individual SLEs are motivated or equipped to collect the evidence needed to demonstrate their value or abilities to solve the problems they were formed to address. The present study describes the results of a 34-item qualitative survey—completed by leaders of 37 SLEs from four U.S. regions—designed to understand where SLEs are in their evaluation planning, implementing, and capacity-building processes. We found that most SLEs were championed by the extended education sector, and all were highly motivated to conduct evaluation and assessment. Most communities reported a willingness to create a shared vision around data collection, which will help researchers and practitioners track, understand, and improve STEM quality and outcomes in and out of school.
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Costa e Silva, Eliana, Aldina Correia, and Ana Borges. "Unveiling the Dynamics of the European Entrepreneurial Framework Conditions over the Last Two Decades: A Cluster Analysis." Axioms 10, no. 3 (July 6, 2021): 149. http://dx.doi.org/10.3390/axioms10030149.
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Entrepreneurship is a theme of global interest, and it is the subject of investigations conducted by many researchers and projects. In particular, the Global Entrepreneurship Monitor project is a global project that involves several countries and years of surveys on entrepreneurship indicators. This study focuses on the 12 indicators of the entrepreneurial ecosystem defined by the Entrepreneurial Framework Conditions (EFCs). The EFCs are specifically related to the quality of the entrepreneurial ecosystem. Using clustering techniques, the present study analyzes how European experts’ perceptions on the EFCs of their home country have changed between 2000 and 2019. The main finding is the existence of significant differences between the clusters obtained over the years and between countries. Therefore, in theoretical terms, this dynamical behavior in relation to the entrepreneurial conditions of economies should be considered in future works, namely, those concerning the definition of the number of clusters, which, according to the internal validation measures computed in this work, should be two.
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Coqueiro, Thiago, José Jailton, Tássio Carvalho, and Renato Francês. "A Fuzzy Logic System for Vertical Handover and Maximizing Battery Lifetime in Heterogeneous Wireless Multimedia Networks." Wireless Communications and Mobile Computing 2019 (January 10, 2019): 1–13. http://dx.doi.org/10.1155/2019/1213724.
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Bandwidth and power hungry applications are proliferating in mobile networks at a rapid pace. However, mobile devices have been suffering from a lack of sufficient battery capacity for the intensive/continuous use of these applications. In addition, the mobile ecosystem is currently heterogeneous and comprises a plethora of networks with different technologies such as LTE, Wi-Fi, and WiMaX. Hence, an issue must be addressed to ensure that quality of experience (QoE) is provided for the users in this scenario: an energy-efficient strategy that is designed to extend the battery lifetime of mobile devices. This paper proposes an architecture which provides an intelligent decision-making support system based on Fuzzy Logic for saving the energy of mobile devices within an integrated LTE and Wi-Fi network. The simulated experiments show the benefits of the solution this architecture can provide by using QoE metrics.
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Santos, CM, and EM Eskinazi-Sant'Anna. "The introduced snail Melanoides Tuberculatus (Muller, 1774) (Mollusca: Thiaridae) in aquatic ecosystems of the Brazilian Semiarid Northeast (Piranhas-Assu River basin, State of Rio Grande do Norte)." Brazilian Journal of Biology 70, no. 1 (February 2010): 1–7. http://dx.doi.org/10.1590/s1519-69842010000100003.
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Records of the gastropod Melanoides tuberculatus (Müller, 1774), family Thiaridae, in the Piranhas-Assu River basin in Rio Grande do Norte reveal the dispersal of this native Southeast Asian and East African species into aquatic environments of the Brazilian semiarid region, including artificial environments (reservoirs) and lotic systems. The eutrophic conditions of the local waterbodies appear to favor the present situation, where this invasive species reaches extremely high densities, sometimes over 10,000 ind.m-2 as in Armando Ribeiro Gonçalves Reservoir. These observations indicate the immediate need for new studies on the spatial distribution of the species and its potential impact on the biodiversity and water quality of the waterbodies of the semiarid region of the state. Implantation of regular and systematic monitoring of the aquatic resources of the region is urgently required.
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Asatryan, V. L., and M. R. Dallakyan. "Assessment of seasonal differences of ecological state of lotic ecosystems and applicability of some biotic indices in the basin of Lake Sevan (Armenia): case study of Masrik River." Water Supply 19, no. 4 (November 1, 2018): 1238–45. http://dx.doi.org/10.2166/ws.2018.182.
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Abstract Complex studies of seasonal differences of the ecological state of Masrik River (Armenia) were realized in 2017. Water quality was assessed by BMWP, ASPT and FBI indices based on studies of qualitative and quantitative structures of benthic macro-invertebrates. Potential reference sites in the basin were revealed using the %EPT taxa index in addition to water quality assessment by bioindication methods as well as hydro-chemical, -physical and -morphological measurements. The applicability of the used biotic indices for the different parts of Masrik River was discussed.
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Kraus, Kateryna, Nataliia Kraus, and Oleksandr Manzhura. "Digitalization of Business Processes of Enterprises of the Ecosystem of Industry 4.0: Virtual-Real Aspect of Economic Growth Reserves." WSEAS TRANSACTIONS ON BUSINESS AND ECONOMICS 18 (March 16, 2021): 569–80. http://dx.doi.org/10.37394/23207.2021.18.57.
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The purpose of the research is to present the features of digitization of business processes in enterprises as a foundation on which the gradual formation of Industry 4.0 and the search for economic growth in new virtual reality, which has every chance to be a decisive step in implementing digital strategy for Ukraine and development of the innovation ecosystem. Key problems that arise during the digitalization of business processes in enterprises are presented, among which are: the historical orientation of production to mass, “running” sizes and large batches; large-scale production load; the complexity of cooperation and logic between production sites. It is determined that high-quality and effective tools of innovation-digital transformation in the conditions of virtual reality should include: a single system of on-line order management for all enterprises (application registration – technical expertise – planning – performance control – shipment); Smart Factory, Predictive Maintenance, IIoT, CRM, SCM. Features of digital transformation in the part of formation of enterprises of the ecosystem of Industry 4.0 are revealed. The capabilities and benefits of using Azure cloud platform in enterprises, which includes more than 200 products and cloud services, are analyzed. Azure is said to support open source technologies, so businesses have the ability to use tools and technologies they prefer and are more useful. After conducting a thorough analysis of the acceleration of deep digitalization of business processes by enterprises, authors proposed to put into practice Aruba solution for tracking contacts in the fight against COVID-19. Aruba technology helps locate, allowing you to implement flexible solutions based on Aruba Partner Ecosystem using a USB interface. It is proposed to use SYNTEGRA – a data integration service that provides interactive analytics and provides data models and dashboards in order to accelerate the modernization of data storage and management, optimize reporting in the company and obtain real-time analytics. The possibilities of using Azure cloud platform during the digitization of business processes of enterprises of the ecosystem of Industry 4.0 in the conditions of virtual reality are determined.
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Peng, Shuping, Jose Oscar Fajardo, Pouria Sayyad Khodashenas, Begoña Blanco, Fidel Liberal, Cristina Ruiz, Charles Turyagyenda, Mick Wilson, and Sunil Vadgama. "QoE-Oriented Mobile Edge Service Management Leveraging SDN and NFV." Mobile Information Systems 2017 (2017): 1–14. http://dx.doi.org/10.1155/2017/3961689.
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5G envisages a “hyperconnected society” where trillions of diverse entities could communicate with each other anywhere and at any time, some of which will demand extremely challenging performance requirements such as submillisecond low latency. Mobile Edge Computing (MEC) concept where application computing resources are deployed at the edge of the mobile network in proximity of an end user is a promising solution to improve quality of online experience. To make MEC more flexible and cost-effective Network Functions Virtualisation (NFV) and Software-Defined Networking (SDN) technologies are widely adopted. It leads to significant CAPEX and OPEX reduction with the help of a joint radio-cloud management and orchestration logic. In this paper we discuss and develop a reference architecture for the orchestration and management of the MEC ecosystem. Along with the lifecycle management flows of MEC services, indicating the interactions among the functional modules inside the Orchestrator and with external elements, QoS management with a focus on the channel state information technique is presented.
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Tanniru, Mohan, Jacqueline Jones, Samer Kazziha, and Michelle Hornberger. "Care transition to skilled nursing facility – A model and a case study." Journal of Hospital Administration 8, no. 3 (May 16, 2019): 38. http://dx.doi.org/10.5430/jha.v8n3p38.
Full textAbstract:
Background: Healthcare providers have focused on improving patient care transitions to reduce unanticipated readmission costs, improve patient care quality post-discharge and increase patient satisfaction. This is especially true in US since the introduction of the Affordable Care Act. While there are several practices and evidence-based programs discussed in the literature to address care transition post-discharge, the key challenge remains the same – how to structure the care transition program to influence its effectiveness. In this paper, we focus on modeling one particular care transition – moving a patient from a hospital to a skilled nursing facility (SNF) – and discuss how improved capacity building and use of intermediaries such as advanced nurse practitioners have shown promise in reducing patient readmissions.Method: The methodology proposed here uses service dominant (SD) logic research to inductively derive a model for service exchanges between the two provider ecosystems. This model is then used to analyze service gaps and look for opportunities to innovate within an SNF and improve its capacity to deliver care. Use of intermediation that expands the service model with the addition of more care providers besides the hospital and SNF is also discussed to reduce patient readmissions. Results: The study demonstrates that a number of actors have to work collaboratively to make care transition effective in meeting the patient and provider goals. Specifically, when two care facilities, hospital and SNF, are involved in care transition, opportunities exist to improve their internal capacity to address care within and across facilities. Conclusion: The paper makes two important contributions. It shows the role of SD Logic in identifying opportunities for service innovations in support of care transition, and it shows the role of actors in provider-customer ecosystems to make the transition effective.
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Navarro, Fernanda Keley Silva Pereira, Renan de Souza Rezende, and José Francisco Gonçalves Júnior. "Experimental assessment of temperature increase and presence of predator carcass changing the response of invertebrate shredders." Biota Neotropica 13, no. 4 (December 2013): 28–33. http://dx.doi.org/10.1590/s1676-06032013000400002.
Full textAbstract:
The role of the invertebrate shredders in leaf decomposition process in tropical lotic ecosystems has been explored only recently. In addition to the influence of the quality of litter and the temperature, the risk of predation generally results in changes on the survival and behavior of invertebrate shredders. The aim of this study was to observe the responses of the invertebrate shredders to different species of leaf litters (Experiment 1: Talauma ovata and Inga laurina ; Experiment 2: Talauma ovata, Inga laurina and Richeria grandis ) under gradual temperature rise (24 °C, 26 °C, 28 °C, 30 °C, 32 °C), in the presence (Experiment 2) and absence (Experiment1) of fish (Astyanax sp.) carcasses, as well as to observe the possible consequences of the leaf mass loss (LML). The results from the first experiment suggest that the quality of the litter was capable of changing the feeding preference of the invertebrate shredders, regardless of temperature. In the second experiment, the leaf mass loss was faster in litter with higher quality (Talauma ovate and Richeria grandis ); in addition, we observed that the exploration of these resources resulted in the case-building in the presence of fish carcass. The negative correlation of leaf mass loss of Inga laurina in relation to temperature in the presence of fish carcass probably occurred due to an accelerated metabolic, respiratory and cardiac rates. Apparently, this process may have led to an increased shredding activity on the litters of better quality in relation to the Inga laurina. This fact may be related to less energy consumption, so as to meet their energy demands more efficiently.
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Sullivan, S. Mažeika P., and Mary C. Watzin. "Relating stream physical habitat condition and concordance of biotic productivity across multiple taxa." Canadian Journal of Fisheries and Aquatic Sciences 65, no. 12 (December 2008): 2667–77. http://dx.doi.org/10.1139/f08-165.
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To explore the potential of assessments of stream geomorphic condition and habitat quality in evaluating lotic productivity, we investigated concordance of stream biotic productivity (aquatic macroinvertebrates, crayfish, fish, and belted kingfishers ( Ceryle alcyon )) and their physical habitat correlates in 18 streams in the Champlain Valley, Vermont, USA. Pearson correlation analysis indicated significant concordance between macroinvertebrate density and fish biomass (r = 0.76), between the density of macroinvertebrates in the orders Ephemeroptera, Plecoptera, and Trichoptera and fish biomass (r = 0.81), and between fish biomass and kingfisher brood weight (r = 0.54). We used principal component analysis followed by linear regression to investigate relationships between physical habitat condition and biotic productivity and to identify key components of physical habitat condition assessments. Our analysis supported the combined use of geomorphic and habitat assessments as a comprehensive indicator of stream physical habitat condition. We found relationships between habitat assessment scores and productivity measures of all taxa except crayfish, suggesting similar responses to physical condition across trophic levels. Our results encourage the use of additional taxa, in addition to widely used macroinvertebrate metrics, as indicators of the composite effects of physical habitat impairment in stream ecosystems.
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Furtado, Gil Dutra, Ellen Monteiro Furtado, Tamara De Moura Mendes, Grazielly Diniz Duarte, Soraya Abrantes Pinto de Brito, and Felipe Eduardo da Silva Sobral. "PASTURES, SOIL AND COMPOSTING. LITERATURE REVIEW." ENVIRONMENTAL SMOKE 3, no. 3 (December 28, 2020): 01–06. http://dx.doi.org/10.32435/envsmoke.20203301-06.
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The Veterinarian must be aware of the pastures and their handling, as the high quality pastures will contribute to an excellent nutrition of the animals. Within this logic, soil is an essential natural resource for the survival of animals, since ecosystems contribute to the growth of plants and to the regulation of water flow in the environment, functioning as an environmental buffer, in the formation, attenuation and degradation of compounds natural. Composting is the process of controlled degradation of organic waste, which is a process in which it seeks to reproduce ideal conditions of humidity, oxygen and nutrients, especially carbon and nitrogen, to favor and accelerate the degradation of waste in a safe manner, avoiding the attraction of disease vectors and eliminating pathogens. Thus, knowing these environmental contributions, will favor in the guidelines that the veterinarian should pass on to the country man, aiming to have a well-nourished herd and with consequent lesser animal convalescence.