bluuebunny/crossref_metadata_2025 huggingface dataset:
The Influence of the Blade Outlet Angle on the Flow Field and Pressure Pulsation in a Centrifugal Fan
Authors: Ding Hongchang , Chang Tao , Lin Fanyun
Published: November 2020

This paper takes centrifugal fan as the research object and establishes five impeller models with different blade outlet angles. By means of computational fluid dynamics (CFD), the external characteristics of the centrifugal fan and the internal characteristics, including the velocity, pressure, and turbulent energy distribution, at the middle span plane of the impeller or fan were obtained and compared. In addition, the pressure fluctuations surrounding the impeller outlet were also analyzed. The results showed that the change of the blade outlet angle of the centrifugal fan had a great influence on the performance; the total pressure and efficiency of the fan were the highest when the outlet angle of the blade was increased to 29.5° under the design flow rate; and the influence of the outlet angle on the fan performance was different in off-design conditions. On the other hand, at different flow rates, the change of the internal flow field with the increase of the outlet angle was different. For the pressure fluctuation of the fan, by increasing the blade outlet angle properly under high flow conditions, the fluctuation amplitude of the fan at the blade frequency and its frequency multiplication could be reduced, which is conducive to decreasing the impeller noise. The research results have good guiding significance regarding the design of the pneumatic performance and noise reduction performance of centrifugal fans.
Change Points Detected in Decadal and Seasonal Trends of Outlet Glacier Terminus Positions across West Greenland
Authors: York Ashley V. , Frey Karen E. , Jamali Sadegh , Das Sarah B.
Published: November 2020

We investigated the change in terminus position between 1985 and 2015 of 17 marine-terminating glaciers that drain into Disko and Uummannaq Bays, West Greenland, by manually digitizing over 5000 individual frontal positions from over 1200 Landsat images. We find that 15 of 17 glacier termini retreated over the study period, with ~80% of this retreat occurring since 2000. Increased frequency of Landsat observations since 2000 allowed for further investigation of the seasonal variability in terminus position. We identified 10 actively retreating glaciers based on a significant positive relationship between glaciers with cumulative retreat >300 m since 2000 and their average annual amplitude (seasonal range) in terminus position. Finally, using the Detecting Breakpoints and Estimating Segments in Trend (DBEST) program, we investigated whether the 2000–2015 trends in terminus position were explained by the occurrence of change points (significant trend transitions). Based on the change point analysis, we found that nine of 10 glaciers identified as actively retreating also underwent two or three periods of change, during which their terminus positions were characterized by increases in cumulative retreat. Previous literature suggests potential relationships between our identified change dates with anomalous ocean conditions, such as low sea ice concentration and high sea surface temperatures, and our change durations with individual fjord geometry.
Early ICESat-2 on-orbit Geolocation Validation Using Ground-Based Corner Cube Retro-Reflectors
Authors: Magruder Lori , Brunt Kelly , Alonzo Michael
Published: November 2020

The Ice, Cloud and Land Elevation Satellite-2 (ICESat-2), an Earth-observing laser altimetry mission, is currently providing global elevation measurements. Geolocation validation confirms the altimeter’s ability to accurately position the measurement on the surface of the Earth and provides insight into the fidelity of the geolocation determination process. Surfaces well characterized by independent methods are well suited to provide a measure of the ICESat-2 geolocation accuracy through statistical comparison. This study compares airborne lidar data with the ICESat-2 along-track geolocated photon data product to determine the horizontal geolocation accuracy by minimizing the vertical residuals between datasets. At the same location arrays of corner cube retro-reflectors (CCRs) provide unique signal signatures back to the satellite from their known positions to give a deterministic solution of the laser footprint diameter and the geolocation accuracy for those cases where two or more CCRs were illuminated within one ICESat-2 transect. This passive method for diameter recovery and geolocation accuracy assessment is implemented at two locations: White Sands Missile Range (WSMR) in New Mexico and along the 88°S latitude line in Antarctica. This early on-orbit study provides results as a proof of concept for this passive validation technique. For the cases studied the diameter value ranged from 10.6 to 12 m. The variability is attributed to the statistical nature of photon-counting lidar technology and potentially, variations in the atmospheric conditions that impact signal transmission. The geolocation accuracy results from the CCR technique and airborne lidar comparisons are within the mission requirement of 6.5 m.
Chlorophyll-a Variability during Upwelling Events in the South-Eastern Baltic Sea and in the Curonian Lagoon from Satellite Observations
Authors: Dabuleviciene Toma , Vaiciute Diana , Kozlov Igor E.
Published: November 2020

Based on the analysis of multispectral satellite data, this work demonstrates the influence of coastal upwelling on the variability of chlorophyll-a (Chl-a) concentration in the south-eastern Baltic (SEB) Sea and in the Curonian Lagoon. The analysis of sea surface temperature (SST) data acquired by the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard Aqua/Terra satellites, together with Chl-a maps from Medium Resolution Imaging Spectrometer (MERIS) onboard Envisat, shows a significant decrease of up to 40–50% in Chl-a concentration in the upwelling zone. This results from the offshore Ekman transport of more productive surface waters, which are replaced by cold and less-productive waters from deeper layers. Due to an active interaction between the Baltic Sea and the Curonian Lagoon which are connected through the Klaipeda Strait, coastal upwelling in the SEB also influences the hydrobiological conditions of the adjacent lagoon. During upwelling inflows, SST drops by approximately 2–8 °C, while Chl-a concentration becomes 2–4 times lower than in pre-upwelling conditions. The joint analysis of remotely sensed Chl-a and SST data reveals that the upwelling-driven reduction in Chl-a concentration leads to the temporary improvement of water quality in terms of Chl-a in the coastal zone and in the hyper-eutrophic Curonian Lagoon. This study demonstrates the benefits of multi-spectral satellite data for upscaling coastal processes and monitoring the environmental status of the Baltic Sea and its largest estuarine lagoon.
Student Housing Choices and Neighborhood Change: Brown University 1937–1987
Authors: Pettit Nathaniel Philip , Bull Marijoan
Published: November 2020

The formal ambitions and societal expectations of anchor institutions have shifted over time. Many universities have evolved from walled-off enclaves, to self-interested urban redevelopers, to mutual gain negotiators. Detailed accounts exist of universities, as anchor institutions, directly displacing low-income communities of color by utilizing the higher education provisions of urban renewal. This case study of Brown University in Providence, Rhode Island, adds to this history by documenting the university’s contribution to the diminution of a working-class neighborhood of color specifically through student residency philosophies and policies, enrollment expansion, and real-estate decisions, during 1937–1987. Brown University’s choices played out in a neighborhood already scarred by interstate highway construction and urban renewal. Drawing from primary source materials on institutional decision-making this work examines the transformation of Brown University’s models of student housing amidst evolving community concerns about the demolition of historic properties and push back around increasing displacement pressures. Several issues and research directions for the new era of equity centered anchor work emerge from this historical recounting of an anchor institution’s student housing choices.
Measurement of the Spatial Complexity and Its Influencing Factors of Agricultural Green Development in China
Authors: Guo Hongpeng , Xu Shuang , Pan Chulin
Published: November 2020

The article focuses on the spatial complexity of agricultural green development (AGD) in different regions. The article first constructs an evaluation index system for the level of AGD from four dimensions: Social development, economic benefits, resource input, and ecological environment. Then, the article uses an improved entropy weight method to evaluate the level of AGD with panel data of 31 provinces in China from 2007 to 2018. Finally, on the basis of Moran Index and the Spatial Durbin Model, the article analyzes the spatial heterogeneity of the factors that affect the green development of agriculture in China. The results show that: (1) From 2007 to 2018, the overall level of AGD shows a fluctuating upward trend in China, and there are differences among provinces. The level of AGD in the three major regions presents the characteristics of Eastern > Central > Western; (2) China’s provincial AGD level has an obvious positive autocorrelation in spatial distribution, showing significant spatial agglomeration characteristics in space; (3) the four factors of urbanization level, agricultural mechanization level, scientific and technological R&D investment, and arable area, have different effects on the level of AGD in three major regions. This study provides a reference for understanding the status of China’s agricultural green development level and policy recommendations on how to improve the level of agricultural green development. The results imply that some effective policy measures, such as prompting the integrated development of the three major industries and optimizing the industrial structure, should be taken to coordinate “green” with “development” from national and regional perspectives.
Coronavirus and Halal Tourism and Hospitality Industry: Is It a Journey to the Unknown?
Authors: El-Gohary Hatem
Published: November 2020

Coronavirus (COVID-19) gained and will continue to gain a lot of global attention over the coming months (and maybe the coming few years). Since its outbreak in Wuhan (China), it has turned into one of the major challenges affecting the whole world. In a comparatively short time, the virus outbreak turned into a pandemic that led to massive negative impacts not only on people health and well-being, but also on the global economy, travel industry, pharmaceutical industry, tourism industry, and many other industries. This research paper aims to investigate the different effects of coronavirus on the global Halal tourism and Halal hospitality industry and whether the coronavirus pandemic is the end of Halal tourism and hospitality as we know it or not. The paper offers an in-depth theoretical examination of the different aspect of the pandemic on Halal tourism and hospitality industry and provides guidance on how to address these different aspects. The current paper is one of very few research papers addressing coronavirus on the tourism and hospitality industry.
Ethics and Happiness at Work in the Spanish Financial Sector
Authors: Castellanos-Redondo Sonia , Nevado-Peña Domingo , Yañez-Araque Benito
Published: November 2020

Happiness at work requires a good working environment, which undoubtedly improves productivity. In this sphere, the concept is closely related to job satisfaction, which is one of the main factors determining individual happiness, along with home ownership, security, and a healthy environment. Innovative policies to improve corporate well-being—organizational ethics—improve the image of the company, and help transfer the concept of ‘happy management’ to all stakeholders. In addition, remote working, which has become essential for many during the COVID-19 pandemic, poses a key issue in terms of human resource management that needs to be taken into account. Using a survey of working-age Spanish citizens, we established a measure of organizational ethics based on the possible discrepancy between citizens’ personal happiness and their happiness at work. The analysis focused on one of the essential economic sectors in the face of the pandemic, the financial sector. These workers demand organizational ethics with clear values in social responsibility and training, going beyond the achievement of a socially acceptable income. A comparative linear model is also used to test the relationships between a number of conditioning variables and organizational ethics. Citizens’/workers’ priorities are found to shift towards quality of life with a healthy environment, rather than sustainability.
New Design Procedure of Transtibial ProsthesisBed Stump Using Topological Optimization Method
Authors: Sotola Martin , Stareczek David , Rybansky David , Prokop Jiri , Marsalek Pavel
Published: November 2020

This paper presents a new design procedure for production of a transtibial prosthesis bed stump by three-dimensional (3D) printing with topological optimization. The suggested procedure combines the medical perspective with finite element analysis and facilitates regaining the symmetry in patients with transtibial prosthesis, which leads to life improvement. The particular focus of the study is the weight reduction of the lower part of the bed stump, while taking into account its stiffness and load-bearing capacity. The first part of the work deals with the analysis of the subject geometry of the bed stump, which is usually oversized in terms of the weight and stiffness that are necessary for the current application. In the second part, an analysis of walking biomechanics with a focus on the impact and rebound phases is presented. Based on the obtained information, a spatial model of the lower part of the bed stump is proposed in the third phase, in which the finite element method is described. In the fourth part, the topological optimization method is used for reducing the structure weight. In the last part, the results of the designed model are analyzed. Finally, the recommendations for the settings of the method are presented. The work is based on the practical industry requirements, and the obtained results will be reflected in the design of new types of transtibial prosthesis.
Melittin Induces Local Order Changes in Artificial and Biological Membranes as Revealed by Spectral Analysis of Laurdan Fluorescence
Authors: Zorilă Bogdan , Necula George , Radu Mihai , Bacalum Mihaela
Published: November 2020

Antimicrobial peptides (AMPs) are a class of molecules widely used in applications on eukaryotic and prokaryotic cells. Independent of the peptide target, all of them need to first pass or interact with the plasma membrane of the cells. In order to have a better image of the peptide action mechanism with respect to the particular features of the membrane it is necessary to better understand the changes induced by AMPs in the membranes. Laurdan, a lipid membrane probe sensitive to polarity changes in the environment, is used in this study for assessing changes induced by melittin, a well-known peptide, both in model and natural lipid membranes. More importantly, we showed that generalized polarization (GP) values are not always efficient or sufficient to properly characterize the changes in the membrane. We proved that a better method to investigate these changes is to use the previously described log-normal deconvolution allowing us to infer other parameters: the difference between the relative areas of elementary peak (ΔSr), and the ratio of elementary peaks areas (Rs). Melittin induced a slight decrease in local membrane fluidity in homogeneous lipid membranes. The addition of cholesterol stabilizes the membrane more in the presence of melittin. An opposite response was observed in the case of heterogeneous lipid membranes in cells, the local order of lipids being diminished. RS proved to be the most sensitive parameter characterizing the local membrane order, allowing us to distinguish among the responses to melittin of both classes of membrane we investigated (liposomes and cellular membranes). Molecular simulation of the melittin pore in homogeneous lipid bilayer suggests that lipids are more closely packed in the proximity of the melittin pore (a smaller area per lipid), supporting the experimental observation.
Darunavir-Resistant HIV-1 Protease Constructs Uphold a Conformational Selection Hypothesis for Drug Resistance
Authors: Liu Zhanglong , Tran Trang T. , Pham Linh , Hu Lingna , Bentz Kyle , Savin Daniel A. , Fanucci Gail E.
Published: November 2020

Multidrug resistance continues to be a barrier to the effectiveness of highly active antiretroviral therapy in the treatment of human immunodeficiency virus 1 (HIV-1) infection. Darunavir (DRV) is a highly potent protease inhibitor (PI) that is oftentimes effective when drug resistance has emerged against first-generation inhibitors. Resistance to darunavir does evolve and requires 10–20 amino acid substitutions. The conformational landscapes of six highly characterized HIV-1 protease (PR) constructs that harbor up to 19 DRV-associated mutations were characterized by distance measurements with pulsed electron double resonance (PELDOR) paramagnetic resonance spectroscopy, namely double electron–electron resonance (DEER). The results show that the accumulated substitutions alter the conformational landscape compared to PI-naïve protease where the semi-open conformation is destabilized as the dominant population with open-like states becoming prevalent in many cases. A linear correlation is found between values of the DRV inhibition parameter Ki and the open-like to closed-state population ratio determined from DEER. The nearly 50% decrease in occupancy of the semi-open conformation is associated with reduced enzymatic activity, characterized previously in the literature.
Estimating the Effect of Deforestation on Runoff in Small Mountainous Basins in Slovakia
Authors: Danáčová Michaela , Földes Gabriel , Labat Marija Mihaela , Kohnová Silvia , Hlavčová Kamila
Published: November 2020

The paper aims to assess the impact of deforestation due to windstorms on runoff in small mountain river basins. In the Boca and Ipoltica River basins, changes in forested areas were assessed from available historical and current digital map data. Significant forest losses occurred between 2004 and 2012. During the whole period of 1990–2018, forested areas in the Boca river decreased from 83% to 47% and in the Ipoltica River basin from 80% to 70%. Changes in runoff conditions were assessed based on an assessment of changes in the measured time series of the hydrometeorological data for the years 1981–2016. An empirical hydrological model was used to determine the design peak discharges before and after significant windstorms were estimated for different rain intensities and return periods. The regional climate scenario for the period 2070–2100 was used to assess the current impact of climate change and river basin deforestation on predicted changes in design floods in the coming decades. The effect of deforestation became evident in the extreme discharges, especially in future decades. In the Boca River basin, the estimated design floods increased by 59%, and in the Ipoltica River basin by 172% in the case of the 100-year return period.
Microplastic Concentrations in Raw and Drinking Water in the Sinos River, Southern Brazil
Authors: Ferraz Marlon , Bauer Amanda Leticia , Valiati Victor Hugo , Schulz Uwe Horst
Published: November 2020

Microplastics are omnipresent in the atmosphere, terrestrial and aquatic ecosystems, food and beverages. They may cause risks to biodiversity and the human population. The present study aims to assess the concentrations of microplastics in raw and drinking water of the Sinos River in Southern Brazil. The water was collected at eight locations along the Sinos River and in eight residences supplied with treated river water. The samples were processed by dying plastic particles with Nile Red and counting by fluorescence microscopy. River water showed an average of 330.2 particles L−1 and treated water 105.8 particles L−1. Fibers were the most abundant particles shapes in the samples. Particle abundance in the raw water did not follow the urbanization gradient in the Sinos River basin. The exact pathways of microplastic particles remain unidentified, but the predominance of fibers suggests that untreated sewage from washing machines may be a principal source of contamination, particularly in the headwaters. The microplastic in the drinking water is an additional factor to be considered in conservation efforts aiming at improving water quality in the Sinos River basin.
Assessment of the Visual Quality of Sediment Control Structures in Mountain Streams
Authors: Chen Jinn-Chyi , Cheng Chih-Yuan , Huang Chia-Ling , Chen Su-Chin
Published: November 2020

Sediment control structures such as check dams, groundsills, and revetments are commonly used to balance sediment transport. In this study, we investigated the visual quality of sediment control structures that have been installed to manage mountain streams by analyzing images from the Soil and Water Conservation Bureau (SWCB) of Taiwan. We used visual preference (P) as an indicator in the evaluation of visual quality and considered two softscape elements and four cognitive factors associated with P. The two softscape elements were the visible body of water and vegetation, which were represented by the percentage of visible water (WR) and the percentage of visible greenery (GR). We considered four cognitive factors: naturalness, harmony, vividness, and closeness. Using a questionnaire-based survey, we asked 212 experts and laypeople to indicate their visual preferences (P) for the images. We examined the associations of the P ratings with cognitive factors and softscape elements and then established an empirical relationship between P and the cognitive factors using multiple regression analysis. The results showed that the subjects’ visual preferences were strongly affected by the harmony factor; the subjects preferred the proportion of softscape elements to be 30% WR and 40% GR for optimal harmony, naturalness, and visual quality of the sediment control structures. We discuss the visual indicators, visual aesthetic experiences, and applications of the empirical relationship, and offer insights into the study’s implications.
An Examination of the Dependency between Maximum Equilibrium Local Scour Depth and the Grain Size/Structure Size Ratio
Authors: Crowley Raphael , Cottrell William , Singleton Alexander
Published: November 2020

This paper begins by demonstrating how the Florida Department of Transportation (FDOT) local scour equations take the ratio between grain size and structure size into account when computing equilibrium local scour depth and contrasts this with the well-known Colorado State University (CSU) equation that does not take sediment information into account. Then, a relatively recent empirical formulation from the J-L. Briaud research group for computing local equilibrium scour depth is presented that appears to take the structure size/grain size ratio into account indirectly. Next, a possible explanation for the dependency between local equilibrium scour depth and the structure/grain size ratio is presented that was originally developed by D. Max Sheppard in 2004. This explanation shows that superimposing the pressure gradient around a particle with the pressure gradient around a pile leads to the dependency between equilibrium scour depth and the grain size/structure size ratio. Finally, a new formulation for local equilibrium scour depth based upon turbulent energy spectrum decay is presented. This new formulation reduces the local scour problem to a problem whereby turbulent diffusivity must be better understood. However, this new formulation also appears to show a dependency between equilibrium scour depth and the grain size/structure size ratio. Overall, the analysis presented herein provides several reasons, explanations, and pieces of evidence to suggest that the grain/structure size ratio is an important parameter to consider when computing local equilibrium scour depth.
Spatiotemporal Assessment of Agricultural Drought Using a Cell-Based Daily Soil Water Analysis Model
Authors: Kim Soo-Jin , Bae Seung-Jong , Jang Min-Won
Published: November 2020

This study developed a cell-based daily soil water analysis model (CellSW) for evaluating agricultural drought and calculated an agricultural drought index called the “Rainfall Effectiveness Index for Crop” (REIC). The model analyzed a daily soil water balance based on crop types, growth stages, soils, and climate. It adopted the rasterized daily rainfall, daily evapotranspiration, crop coefficient (by crop growth stage), and root depth as input parameters; it also consecutively generated the daily surface layers of the water balance items in each cell, such as the consumptive use, effective rainfall, available soil water, and irrigation requirements. The model was applied in a test area in Illinois and Iowa, targeting corn and soybeans; the soil water balance was analyzed during the growing period from 2000 to 2018. The model calculated the seasonal REIC, defined as the ratio of supply quantity (effective rainfall) to demand quantity (crop evapotranspiration). In addition, the accumulated REIC values were estimated. The REIC was confirmed to accurately reflect drought situations in the relevant areas, based on comparisons with drought records. The cell-based model can be applied to different types of cultivated crops, growth stages, and soil conditions without spatial and temporal limitations, even in mixed farming.
Estimating IDF Curves Consistently over Durations with Spatial Covariates
Authors: Ulrich Jana , Jurado Oscar E. , Peter Madlen , Scheibel Marc , Rust Henning W.
Published: November 2020

Given that long time series for temporally highly resolved precipitation observations are rarely available, it is necessary to pool information to obtain reliable estimates of the distribution of extreme precipitation, especially for short durations. In this study, we use a duration-dependent generalized extreme value distribution (d-GEV) with orthogonal polynomials of longitude and latitude as spatial covariates, allowing us to pool information between durations and stations. We determine the polynomial orders with step-wise forward regression and cross-validated likelihood as a model selection criterion. The Wupper River catchment in the West of Germany serves as a case study area. It allows us to estimate return level maps for arbitrary durations, as well as intensity-duration-frequency curves at any location—also ungauged—in the research area. The main focus of the study is evaluating the model performance in detail using the Quantile Skill Index, a measure derived from the popular Quantile Skill Score. We find that the d-GEV with spatial covariates is an improvement for the modeling of rare events. However, the model shows limitations concerning the modeling of short durations d≤30min. For ungauged sites, the model performs on average as good as a generalized extreme value distribution with parameters estimated individually at the gauged stations with observation time series of 30–35 years available.
Nitrogen-Doped Graphene Iron-Based Particle Electrode Outperforms Activated Carbon in Three-Dimensional Electrochemical Water Treatment Systems
Authors: Ghanbarlou Hosna , Pedersen Nikoline Loklindt , Simonsen Morten Enggrob , Muff Jens
Published: November 2020

The synergy between electrochemical oxidation and adsorption on particle electrodes was investigated in three-dimensional (3D) systems for p-nitrosodimethylaniline (RNO) decolorization and pesticide removal. A comparison was made between granular activated carbon (GAC) and a novel synthesized nitrogen-doped graphene-based particle electrode (NCPE). Experiments on RNO decolorization show that the synergy parameter of the 3D-NCPE system was improved 3000 times compared to the studied 3D-GAC system. This was due to the specific nanostructure and composition of the NCPE material. Nitrogen-doped graphene triggered an oxygen reduction reaction, producing hydrogen peroxide that simultaneously catalyzed on iron sites of the NCPEs to hydroxyl radicals following the electro-Fenton (EF) process. Data showed that in the experimental setup used for the study, the applied cell voltage required for the optimal value of the synergy parameter could be lowered to 5V in the 3D-NCPEs process, which is significantly better than the 15–20 V needed for synergy to be found in the 3D-GAC process. Compared to previous studies with 3D-GAC, the removal of pesticides 2,6 dichlorobenzamide (BAM), 2-methyl-4-chlorophenoxyaceticacid (MCPA), and methylchlorophenoxypropionic acid (MCPP) was also enhanced in the 3D-NCPE system.
Potencial ecoturístico de projetos de assentamento de reforma agrária no Estado do Tocantins
Authors: Milare Gisele , Azevedo Lícia Priscila Nogueira , Vale Stella Costa Santos do
Published: November 2020

UUma nova ruralidade vem sendo defendida no sentido da diversificação de atividades econômicas no meio rural. O desenvolvimento econômico não se restringe somente as atividades agrícolas, mas abrange uma gama de atividades, como o ecoturismo. De modo que o ecoturismo pode ser inserido nessa nova ruralidade como oportunidade de emprego e renda para projetos de assentamento de reforma agrária. O ecoturismo, além dos benefícios econômicos, contribui para a conservação de recursos naturais. Nesse contexto, o presente trabalho teve como objetivo o mapeamento dos projetos de assentamento do Estado do Tocantins com potenciais para desenvolvimento de atividades de ecoturismo, de forma a contribuir para ações de planejamento e gestão, fornecendo informações para atuação de entidades públicas e privadas. Para isso, foram utilizadas ferramentas de geoprocessamento para o cruzamento de informações espaciais do potencial turístico do Zoneamento Ecológico-econômico e das Unidades de conservação com informações espaciais de projetos de assentamento. No Estado do Tocantins, dentre os 347 projetos de assentamento avaliados, 141 (40%) se localizam em área com potencial ecoturístico, sendo que destes, 106 apresentam potencial para atividades de ecoturismo e 35 para turismo de praia. Isso representa um total de 10.600 famílias que podem ser beneficiadas com geração de renda atrelada à consciência e preservação ambiental através de projetos de ecoturismo.
STATIC CALCULATION OF FILM ROOF OF CULTIVATION STRUCTURE
Authors: Blazhnov A.
Published: November 2020

Membrane roofing greenhouses and small-scale farms are used in the spring and autumn period for growing various crops. The main load for such structures is wind. Norms of construction design of greenhouses do not contain provisions for calculating the membrane roof of cultivation structures for this type of load. For arched greenhouses with a circular outline of the coating, an approximate method for determining the forces from the wind load in a membrane stabilized by wind ropes is proposed. The membrane roof is considered as a soft cover under the influence of negative wind load. The calculated dependences for estimating the stress-strain state of the roof material are derived analytically. The calculation scheme of the roof deformed by wind pressure, corresponding to the actual operating conditions of the structure, is used to derive the dependencies. The roof of the structure is considered from the polyethylene membrane recommended by the building standards for the design of greenhouses, the physical and mechanical characteristics of which are standardized. Dependences are derived for determining the longitudinal and annular stresses in the roof material, the rational pitch of wind ropes and the maximum possible force in them. The proposed method of static calculation of the membrane roof can be used for cultivation structures with the outline of the coating close to circular
STUDYING THE POSSIBILITY OF USING COLEMANIT TO OBTAIN ENAMELS ON STEEL
Authors: Bondarenko N. , Pavlenko Z.
Published: November 2020

The practical use of boron and its compounds is extremely diverse due to its different properties. About 55 % of boron raw materials are consumed by the glass and ceramic industries for the manufacture of optical glasses, heat-insulating glass fibers, acid-resistant and refractory products, enamels, glazes, porcelain, etc. The paper considers the possibility of using colemanite to obtain enamel over steel. The optimal temperature-time regime of firing has been developed to obtain a high-quality coating and achieve the desired effect. It has been established that colemanite can partially replace cover enamel drill. On the basis of the studies carried out, it was found that the obtained experimental enamel is more refractory than the ESP-210 enamel. The optimal firing temperature for the experimental coating was established – 950 ° С, for the ESP-210 coating – 825 ° С. For uniform reflow of the experimental coating, a temperature is required that exceeds the reflow temperature of ESP-210 by 125 ° C. Colemanite-containing batch was cooked. Cooking was carried out in an electric oven at 1300 ° C for 5 hours. For further research, a slip was prepared from the experimental enamel and applied by pouring onto the plates
BUILDING A MULTI-ROBOT SYSTEM BASED ON STOCHASTIC SUPER-TWIST EVENT MODE CONTROLLER
Authors: Virabyan L. , Demin V.
Published: November 2020

This article presents the development of a "Super-Twist" controller based on stochastic events to solve the problem of building control in a network multi-agent system in the presence of an external disturbance. The stochasticity in the system is introduced by randomness of network uncertainties i.e. losses and delays of data packets. The proposed controller structure consists of two parts. The first part outputs an event trigger condition for updates to the input control data of each agent in the system. The second part guarantees the desired construction in a finite time by determining the upper limit of the time to reach the specified sliding surface of each agent. The proposed stochastic design is tested on mobile robots. The results show a triple efficiency of the stochastic structure. They are a) retaining the advantages of event-triggering strategy, b) retaining the advantages of super-twisting sliding mode controller, and c) robust towards network uncertainties
La place du vétérinaire au XXième siècle dans une activité multiséculaire : la pisciculture d’étan
Authors: Mourrieras Christophe
Published: November 2020

La pisciculture d’étang est une activité traditionnelle qui valorise de façon extensive la productivité naturelle de ces milieux aquatiques. Elle produit principalement du poisson destiné au repeuplement pour la pêche de loisir, et elle peut aussi contribuer à une alimentation locale. Dans cette filière proche d’un système pêche-cueillette, le réflexe sanitaire n’allait pas de soi. L’obligation de définir un programme de surveillance sanitaire pour être autorisé à vendre les poissons ou les produits, a servi de déclic en généralisant le recours à des visites vétérinaires. Pour répondre à ce besoin réglementairement imposé, il faudra conjuguer les talents des vétérinaires sanitaires de proximité et des quelques vétérinaires spécialisés en aquaculture. La volonté partagée par les pouvoirs publics et la filière aquacole de qualifier la France entière vis-à-vis des deux principales maladies contagieuses va encore accélérer le processus. Dès lors, les vétérinaires pourront transformer l’essai en déployant toute la palette de leurs compétences en matière de surveillance sanitaire et de veille face à d’éventuels risques émergents ; ils devront proposer aux pisciculteurs une stratégie d’approche écopathologique globale.
Preliminary landslide mapping in Denmark indicates an underestimated geohazard
Authors: Svennevig Kristian , Lützenburg Gregor , Keiding Marie K. , Schack Pedersen Stig Asbjørn
Published: November 2020

The process of coastal erosion is well known to the public and decision-makers in Denmark; however, there is little awareness of the risks posed by larger landslides. Only a few scientific studies investigate landslides in Denmark, and as a result, the country is underrepresented in international landslide inventories. Here, we present a systematically produced preliminary landslide inventory based on digital elevation models and high-resolution orthophotos. So far, the preliminary inventory documents 3026 morphological expressions of landslides close to the coast and inland, showing that landslides are more widespread in Denmark than previously recognised. A number of these landslides are near buildings and infrastructure. This paper therefore highlights the potential for geohazardous landslides to occur in Denmark on a national scale and discusses some of the implications. Two of the major questions arising from this study are (1) how to approach potential geohazards in a country with no framework or precedence for landslide hazard and risk management and (2) how landslides and associated risk in Denmark will evolve under a changing climate.
Interactive Module Design Using The Course Lab Application Based on a Scientific Approach to Materials Business, Energy and Momentum
Authors: Daichi Akira , Gin Arata , Eiji Arta
Published: November 2020

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PERTANGGUNGJAWABAN PEMERINTAH DESA SEBELUM DAN SESUDAH UNDANG-UNDANG NOMOR 6 TAHUN 2014 TENTANG DESA
Authors: Evangelista Beverly , Zulhadi -
Published: November 2020

Terdapat perbedaan bentuk pertanggungjawaban pemerintah desa sebelum dan sesudah berlakunya Undang-undang Nomor 6 Tahun 2014 tengang Desa dimana sesudah berlakunya undang-undang tersebut pertanggungjawaban pemerintah desa lebih ketat baik kepada BPD maupun Bupati/Walikota dan masyarakat.Adapaun permasalahan dalam tesis ini yakni : bagaimanakah pertanggungjawaban pemerintah desa sebelum  dan sesudah Undang-Undang Nomor 6 tahun 2014 tentang desa ? dalam Hal apa saja pemerintah desa menyampaikan pertanggungjawaban kepada Pemerintah Kabupaten/Kota dan BPD ?Jenis penelitian yang digunakan dalam tesis ini adalah penelitian hukum normatif  dengan beberapa pendekatan yakni : Pendekatan perundang-undangan, Pendekatan Konseptual, Pendekatan Komparatif, Pendekatan Historis.Setelah berlakunya Undang-undang Nomor 22 tahun 1999 Tentang Pemerintah Daerah, Kepala Desa menyampaikan laporan dalam bentuk LPJ Kepala Desa. Dan setelah berlakunya Undang-undang Nomor 32 Tahun 2004 Tentang Pemerintah Daerah, Undang-undang Nomor 6 Tahun 2016 Tentang Desa, Kepala Desa menyampaikan laporan dalam bentuk LKPJ kepada BPD dan Bupati/Walikota serta masyarakat. Dalam hal pelaporan, ada dua jenis laporan pertanggungjawaban yang harus disampaikan oleh pemerintahan desa yakni laporan pelaksanaan Apebedes yang dilakukan pada setiap akhir tahun anggaran dan laporan pertanggungjawaban Kepala Desa pada masa akhir jabatan sebagai Kades.Oleh sebab itu, penulis berkesimpulan bahwa pertanggungjawaban pemerintah desa haruslah disampaikan dalam LKPJ kepada BPD dan Bupati/Walikota serta masyarakat. Kata kunci : Pemerintah Desa, Pertanggungjawaban
Analisis Perbandingan Relationship Orientation Antara Mitra dengan Pengusaha Art Shop Pada Sentra-Sentra Kerajinan Tenun di Kabupaten Lombok Tengah
Authors: Kembang Lale Puspita
Published: November 2020

Bisnis kain tenun umumnya dilakukan di art shop, dimana pihak art shop sebagai penjual yang dibantu oleh beberapa elemen yang salah satunya melibatkan mitra untuk menunjang kesuksesan penjualan (bisnis). Akan tetapi yang terjadi adalah bisnis kain tenun di Lombok Tengah sedang mengalami penurunan penjualan kain tenun, di mana ada beberapa art shop yang tutup dan masih ada beberapa juga yang tetap bertahan. Walaupun dalam kondisi demikian, banyak diantara mitra menerima fee 40%-60% dari total belanja tamu yang dibawa. Ini tentu memberatkan untuk pengusaha art shop karena mereka juga harus mendapat keuntungan yang memadai untuk bisa mengembangkan usaha art shopnya dan mensejahterakan karyawan dan pengrajin tenun songket yang menjadi pemasoknya. Penelitian ini bertujuan untuk mengetahui tingkat dan perbedaan relationship orientation pengusaha art shop dengan mitra di Kabupaten Lombok Tengah. Manfaat penelitian dapat digunakan sebagai acuan dalam mengelola bisnis kerajinan songket sehingga bisa mempertahankan loyalitas pelanggan melalui strategi yang tepat ditengah ketatnya persaingan bisnis dan pasar pada saat ini. Jenis penelitian ini adalah penelitian kuantitatif deskriptif yaitu penelitian yang dilakukan dengan menjelaskan atau menggambarkan secara sistematis dengan fakta yang akurat sifat-sifat serta hubungan antar variable. Pengumpulan data dilakukan dengan menggunakan teknik wawancara dan pemberian kuesioner kepada responden sebagai sampel terpilih. Hasil Penelitian menunjukkan bahwa tingkat Relationship Orientation Pengusaha Art Shop termasuk dalam kategori tinggi sedangkan tingkat Relationship Orientation Mitra masuk kedalam kategori sangat tinggi. Ini artinya tingkat Relationship Orientation Mitra lebih tinggi dari pengusaha art shop, selanjutnya terdapat perbedaan yang signifikan antara relationship orientation yang terdiri dari Trust, Bonding, Communication, Shared Value, Empathy dan Reciprocity antara mitra dengan pengusaha art shop di sentra-sentra kerajinan tenun Lombok Tengah.
FAKTOR-FAKTOR YANG MEMPENGARUHI KEBERHASILAN PENERAPAN AKUNTANSI BERBASIS AKRUAL PADA PEMERINTAH KABUPATEN LOMBOK BARAT
Authors: Budiarto -
Published: November 2020

This study is intended to determine the factors that influence the success of local governments in the implementation of PP 71/2010 on Accrual Based Government Accounting Standard. This quantitative research employs the regression method to analyse the regulations, human resources, commitment, other supporting elements and training which seem to influence the accomplishment of local governments in the implementation of PP 71/2010 on Accrual Based Government Accounting Standard. The population of the study is the regional finance management personnel in 32 Government Work Units (SKPD) within the district government of West Lombok comprising of head of SKPD and/or the finance administration officer (PPK), treasurer, and the planning staff. Sample is selected through the purposive sampling technique in which 96 respondents are given questionnaires. Only 71 respondents return the questionnaires. Likert scale is used for the data measurement.The result of the study shows that regulation, human resources, commitment, other supporting, and training elements partially and simultaneously have positive effect to the accomplishment of local governments in the implementation of PP 71/2010 on Accrual Based Government Accounting Standard.Keywords:  Accrual Basis, regulation, human resources, commitment, supporting elements, training
MENINGKATKAN KEMAMPUAN MENULIS PUISI MELALUI METODE KARYA WISATA
Authors: Yaqien Ilmal
Published: November 2020

Abestrak: Tujuan penelitian ini secara umum untuk mendeskripsikan apakah metode karya wisata dapat meningkatkan kemampuan menulis puisi siswa. Sedangkan tujuan khususnya adalah untuk memberikan nuansa baru bagi siswa agar tidak merasa jenuh dan lebih mudah mendapatkan imajinasi dalam mengeksplorasi kompetensinya dalam menulis puisi, sehingga mereka memperoleh pengalaman yang menyenangkan. Hasil penelitian dapat terlihat ditiap aspek puisi. Hal ini terbukti dengan hasil tiap-tiap  aspek dari perolehan rata-rata tiap aspek puisi. Yakni Rima pada prasiklus nilai rata-rata 2,5, sedang pada siklus I 3,4, dan pada siklus II meningkat menjadi 4,1 sehingga memperoleh peningkatan sebesar 64,00%. Untuk Aspek Bait  pada prasiklus nilai rata-rata 2,7, sedang pada siklus I 3,1, dan pada siklus II meningkat menjadi 4,2 sehingga memperoleh peningkatan sebesar 55,56%. Sedang  untuk aspek irama prasiklus nilai rata-rata 2,5, sedang pada siklus I 3,1, dan pada siklus II meningkat menjadi 4,2 sehingga memperoleh peningkatan sebesar 68,00 %. Sementara untuk rata-rata kelas mengalami peningkatan dari prasiklus kesiklus I sebesar 24,9 %, untuk siklus I kesiklus II 30,5 %, dan untuk prasiklus ke siklus II 62,5 %. Data tersebut menunjukkan peningkatan hasil tes keterampilan menulis puisi prasiklus, siklus I, dan Siklus II. Serta peningkatan pada aspek yang diujikan dalam keterampilan menulis puisi. Hasil tes menulis puisi pada prasiklus dan siklus I menunjukkan hasil yang kurang memuaskan karena tidak mencapai pada target yang telah ditentukan. Akan tetapi pada siklus II hasil tes menulis puisi sudah memuaskan dan patut dibanggakan karena telah mencapai target yang telah ditentukan. Nilai rata-rata pada siklus II yaitu 81,27 atau diatas dari nilai rata-rata yang ditargetkan. Berdasarkan hasil analisis dan pembahasan, penelitian ini dapat disimpulkan, pembelajaran menulis puisi dengan metode karya wisata berhasil meningkatkan keterampilan siswa dalam menulis puisi. Hal ini membuktikan adanya perubahan perilaku yang positif melalui pemahaman siswa terhadap materi pembelajaran menulis puisi. Kata kunci: keterampilan menulis, puisi, metode karya wisata
The Implication of Politeness and Speech Styles in Code Switching of Youth Javanese
Authors: Sugianto Riris
Published: November 2020

The objective of this study is to present the use of  code switching as expressions of politeness in Javanese language. This article is concern on the domain of family, in the terms of discourse analysis. This article present how the youth generation can not acquire the formal styles of Javanese (basa), therefore they tend to do code-switching from formal styles of Javanese (basa) to the use of informal styles of Javanese (ngoko) or to our national language, Indonesian. It provides definitions of politeness by theorists and presents some of the problems related to the concepts of politeness and speech styles in code-switching In Javanese families specifically for the youth generation. Furthermore, it looks into the differences usage of speech styles for both the parents as the elders and children as the youngers in the families. There are some factors of youth Javanese to switch their code. The factors are the participants, the topic, the setting and the function. One important key is every language always has stable characteristics, but it could be dynamic especially when the language (Javanese) exists side by side with another language (Indonesian). Technically, in the communication, the modification of language usage such as code switching that made by the speaker will be occur and unavoidable.