bluuebunny/crossref_metadata_2025 huggingface dataset:
Large-eddy-simulation study on turbulent particle deposition and its dependence on atmospheric-boundary-layer stability
Authors: Yin Xin , Jiang Cong , Shao Yaping , Huang Ning , Zhang Jie
Published: April 2022

Abstract. It is increasingly recognized that atmospheric-boundary-layer
stability (ABLS) plays an important role in eolian processes. While the
effects of ABLS on particle emission have attracted much attention and been
investigated in several studies, those on particle deposition have so far
been less well studied. By means of large-eddy simulation, we investigate how
ABLS influences the probability distribution of surface shear stress and
hence particle deposition. Statistical analysis of the model results reveals
that the shear stress can be well approximated using a Weibull
distribution, and the ABLS influences on particle deposition can be estimated
by considering the shear stress fluctuations. The model-simulated particle
depositions are compared with the predictions of a particle-deposition
scheme and measurements, and the findings are then used to improve the
particle-deposition scheme. This research represents a further step towards
developing deposition schemes that account for the stochastic nature of
particle processes.
Evaluating the consistency and continuity of pixel-scale cloud property data records from Aqua and SNPP (Suomi National Polar-orbiting Partnership)
Authors: Yue Qing , Fetzer Eric J. , Wang Likun , Kahn Brian H. , Smith Nadia , Blaisdell John M. , Meyer Kerry G. , Schreier Mathias , Lambrigtsen Bjorn , Tkatcheva Irina
Published: April 2022

Abstract. The Aqua, SNPP (Suomi National Polar-orbiting Partnership), and JPSS (Joint Polar Satellite System) satellites carry a combination of hyperspectral infrared
sounders (AIRS, Atmospheric Infrared Sounder, and CrIS, Cross-track Infrared Sounder) and high-spatial-resolution narrowband imagers (MODIS, Moderate Resolution Imaging Spectroradiometer, and VIIRS, Visible Infrared Imaging Radiometer Suite). They provide an opportunity to acquire high-quality, long-term cloud
data records and are a key component of the existing Program of Record of
cloud observations. By matching observations from sounders and imagers
across different platforms at the pixel scale, this study evaluates the
self-consistency and continuity of cloud retrievals from Aqua and SNPP by multiple
algorithms, including the AIRS version 7 retrieval algorithm and the
Community Long-term Infrared Microwave Combined Atmospheric Product System (CLIMCAPS) version 2 for sounders and the
standard Aqua MODIS collection 6.1 and the NASA MODIS–VIIRS continuity cloud
products for imagers. Metrics describing detailed statistical distributions
at the sounder field of view (FOV) and the joint histograms of cloud properties
are evaluated. These products are found to be highly consistent despite their
retrieval from different sensors using different algorithms. Differences
between the two sounder cloud products are mainly due to cloud clearing and
the treatment of clouds in scenes with unsuccessful atmospheric profile
retrievals. The sounder subpixel cloud heterogeneity evaluated using the
standard deviation of imager retrievals at the sounder FOV shows good agreement
between the standard and continuity products from different satellites.
However, the impact of algorithm and instrument differences between MODIS and
VIIRS is revealed in cloud top pressure retrievals and in the imager cloud
distribution skewness. Our study presents a unique aspect to examine NASA's
progress toward building a continuous cloud data record with sufficient
quality to investigate clouds' role in global environmental change.
Main drivers of plant diversity patterns of rubber plantations in the Greater Mekong Subregion
Authors: Lan Guoyu , Chen Bangqian , Yang Chuan , Sun Rui , Wu Zhixiang , Zhang Xicai
Published: April 2022

Abstract. The Greater Mekong Subregion (GMS) is one the global biodiversity hotspots.
However, the diversity has been seriously threatened due to environmental
degradation and deforestation, especially by expansion of rubber
plantations. Yet, little is known about the impact of expansion of rubber
plantations on regional plant diversity as well as the drivers for plant
diversity of rubber plantations in this region. In this study, we analyzed
plant diversity patterns of rubber plantations in the GMS based on a ground
survey of a large number of samples. We found that diversity varied across
countries due to varying agricultural intensities. Laos had the highest
diversity, followed China, Myanmar, and Cambodia. Plant species richness of Laos
was about 1.5 times that of Vietnam. We uncovered latitudinal gradients in
plant diversity across these artificial forests of rubber plantations and
these gradients caused by environmental variables such as temperature.
Results of redundancy analysis (RDA), multiple regression, and random forest demonstrated
that latitude and temperature were the two most important drivers for the
composition and diversity of rubber plantations in the GMS. Meanwhile, we also
found that higher dominance of some exotic species (such as Chromolaena odorata and Mimosa pudica) was
associated with a loss of plant diversity within rubber plantations;
however, not all exotic plants cause the loss of plant diversity in rubber
plantations. In conclusion, not only environmental factors (temperature),
but also exotic species were the main factors affecting plant diversity of
these artificial stands. Much more effort should be made to balance
agricultural production with conservation goals in this region, particularly
to minimize the diversity loss in Vietnam and Cambodia.
Leeuwin Current dynamics over the last 60 kyrs – relation to Australian extinction and Southern Ocean change
Authors: Nürnberg Dirk , Kayode Akintunde , Meier Karl J. F. , Karas Cyrus
Published: April 2022

Abstract. The Leeuwin Current flowing southward along West Australia is an important conduit for the poleward heat transport and interocean water exchange between the tropical and the subantarctic ocean areas. Its past development, and its relationship to Southern Ocean change and to Australian ecosystem response, however is largely unknown. We here reconstruct sea surface and thermocline temperatures and salinities from foraminiferal-based Mg/Ca and stable oxygen isotopes from offshore southwest and southeast Australia reflecting the Leeuwin Current dynamics over the last 60 kyrs. Its variability resembles the biomass burning development in Australasia from ~60–20 ka BP implying that climate-modulated changes related to the Leeuwin Current most likely affected Australian vegetational and fire regimes. In particular during ~60–43 ka BP, warmest thermocline temperatures point to a strongly developed Leeuwin Current during Antarctic cool periods when the Antarctic Circumpolar Current weakened. The pronounced centennial-scale variations in Leeuwin Current strength appear in line with the migrations of the Southern Hemisphere frontal system and are captured by prominent changes in the Australian megafauna biomass. We argue that the concerted action of a rapidly changing Leeuwin Current, the ecosystem response in Australia, and human interference since ~50 BP enhanced the ecological stress on the Australian megafauna until a tipping point was reached at ~43 ka BP, after which faunal recuperation no longer took place. While being weakest during the last glacial maximum, the deglacial Leeuwin Current intensified at times of poleward migrations of the Subtropical Front. During the Holocene, the thermocline off South Australia was considerably shallower compared to the short-term glacial and deglacial periods of Leeuwin Current intensification.
Full-coverage 250 m monthly aerosol optical depth dataset (2000–2019) emended with environmental covariates by the ensemble machine learning model over the arid and semi-arid areas, NW China
Authors: Chen Xiangyue , Zuo Hongchao , Zhang Zipeng , Cao Xiaoyi , Duan Jikai , Wang Jingzhe , Zhu Chuanmei , Zhang Zhe
Published: April 2022

Abstract. Aerosols are a complex compound with a great effect on the global radiation balance and climate system even human health, and concurrently are a large uncertain source in the numerical simulation process. The arid and semi-arid area has a fragile ecosystem, with abundant dust, but lacks related aerosol data or data accuracy. To solve these problems, we use the bagging trees ensemble model, based on 1 km aerosol optical depth (AOD) data and multiple environmental covariates, to produce monthly advanced-performance, full-coverage, and high-resolution (250 m) AOD products (named FEC AOD, Fusing Environmental Covariates AOD) in the arid and semi-arid areas. Then, based on FEC AOD, we analyzed the spatiotemporal pattern of AOD and further discussed the interpretation of environmental covariates to AOD. The result shows that the bagging trees ensemble model has a good performance, with its verification R2 always keeping at 0.90 and the R2 being 0.79 for FEC AOD compared with AERONET. The high AOD areas are located in the Taklimakan Desert and the Loess Plateau, and the low AOD area is concentrated in the south of Qinghai province. The higher the AOD is, the stronger the interannual variability. Interestingly, the AOD indicates a dramatic decrease in Loess Plateau and an evident increase in the southeast Taklimakan Desert, while the AOD in the southern Qinghai province almost shows no significant change between 2000 and 2019. The annual variation characteristics present that AOD is the largest in spring (0.267) and the smallest in autumn (0.147); the AOD pattern in Gansu province is bimodal, but unimodal in other provinces. The farmland and construction land are at high AOD levels compared with other land cover types. The meteorological factors demonstrate a maximum interpretation of AOD on all set temporal scales, followed by the terrain factors, and the surface properties are the smallest, i.e., 77.1 %, 59.1 %, and 50.4 % respectively on average. The capability of the environmental covariates for explained AOD varies with season, with an sequence being winter (86.6 %) > autumn (80.8 %) > spring (79.9 %) > summer (72.5 %). In this research, we pathbreakingly provide high spatial resolution (250 m) and long time series (2000–2019) FEC AOD dataset in arid and semi-arid regions to support the atmosphere and related study in northwest China, with the full data available at https://doi.org/10.5281/zenodo.5727119 (Chen et al., 2021a).
Modeling of streamflow in a 30 km long reach spanning 5 years using OpenFOAM 5.x
Authors: Chen Yunxiang , Bao Jie , Fang Yilin , Perkins William A. , Ren Huiying , Song Xuehang , Duan Zhuoran , Hou Zhangshuan , He Xiaoliang , Scheibe Timothy D.
Published: April 2022

Abstract. Developing accurate and efficient modeling techniques for streamflow at the tens-of-kilometers spatial scale and multi-year temporal scale is critical for evaluating and predicting the impact of climate- and human-induced discharge variations on river hydrodynamics. However, achieving such a goal is challenging because of limited surveys of streambed hydraulic roughness, uncertain boundary condition specifications, and high computational costs. We demonstrate that accurate and efficient three-dimensional (3-D) hydrodynamic modeling of natural rivers at 30 km and 5-year scales is feasible using the following three techniques within OpenFOAM, an open-source computational fluid dynamics platform: (1) generating a distributed hydraulic roughness field for the streambed by integrating water-stage observation data, a rough wall theory, and a local roughness optimization and adjustment strategy; (2) prescribing the boundary condition for the inflow and outflow by integrating precomputed results of a one-dimensional (1-D) hydraulic model with the 3-D model; and (3) reducing computational time using multiple parallel runs constrained by 1-D inflow and outflow boundary conditions. Streamflow modeling for a 30 km long reach in the Columbia River (CR) over 58 months can be achieved in less than 6 d using 1.1 million CPU hours. The mean error between the modeled and the observed water stages for our simulated CR reach ranges from −16 to 9 cm (equivalent to approximately ±7 % relative to the average water depth) at seven locations during most of the years between 2011 and 2019. We can reproduce the velocity distribution measured by the acoustic Doppler current profiler (ADCP). The correlation coefficients of the depth-averaged velocity between the model and ADCP measurements are in the range between 0.71 and 0.83 at 75 % of the survey cross sections. With the validated model, we further show that the relative importance of dynamic pressure versus hydrostatic pressure varies with discharge variations and topography heterogeneity. Given the model's high accuracy and computational efficiency, the model framework provides a generic approach to evaluate and predict the impacts of climate- and human-induced discharge variations on river hydrodynamics at tens-of-kilometers and decadal scales.
Evaluating and ranking Southeast Asia's exposure to explosive volcanic hazards
Authors: Jenkins Susanna F. , Biass Sébastien , Williams George T. , Hayes Josh L. , Tennant Eleanor , Yang Qingyuan , Burgos Vanesa , Meredith Elinor S. , Lerner Geoffrey A. , Syarifuddin Magfira , Verolino Andrea
Published: April 2022

Abstract. Regional volcanic threat assessments provide a large-scale comparable vision of the threat posed by multiple volcanoes. They are useful for prioritising risk-mitigation actions and are required by local through international agencies, industries and governments to prioritise where further study and support could be focussed. Most regional volcanic threat studies have oversimplified volcanic hazards and their associated impacts by relying on concentric radii as proxies for hazard footprints and by focussing only on population exposure. We have developed and applied a new approach that quantifies and ranks exposure to multiple volcanic hazards for 40 high-threat volcanoes in Southeast Asia. For each of our 40 volcanoes, hazard spatial extent, and intensity where appropriate, was probabilistically modelled for four volcanic hazards across three eruption
scenarios, giving 697 080 individual hazard footprints plus 15 240 probabilistic hazard outputs. These outputs were overlain with open-access datasets across five exposure categories using an open-source Python geographic information system (GIS) framework developed for this study (https://github.com/vharg/VolcGIS, last access: 5 April 2022). All study outputs – more than 6500 GeoTIFF files and 70 independent estimates of exposure to volcanic hazards across 40 volcanoes – are provided in the “Data availability” section in user-friendly format. Calculated exposure values were used to rank each of the 40 volcanoes in terms of the threat they pose to surrounding communities. Results highlight that the island of Java in Indonesia has the highest median exposure to volcanic hazards, with Merapi consistently ranking as the highest-threat volcano. Hazard seasonality, as a result of varying wind conditions affecting tephra dispersal, leads to increased exposure values during the peak rainy season (January, February) in Java but the dry season (January through April) in the Philippines. A key aim of our study was to highlight volcanoes that may have been overlooked perhaps because they have not been frequently or recently active but that have the potential to affect large numbers of people and assets. It is not intended to replace official hazard and risk information provided by the individual country or volcano organisations. Rather, this study and the tools developed provide a road map for future multi-source regional volcanic exposure assessments with the possibility to extend the assessment to other geographic regions and/or towards impact and loss.
A WaveNet-Based Fully Stochastic Dynamic Stall Model
Authors: Küppers Jan-Philipp , Reinicke Tamara
Published: April 2022

Abstract. Accurate modeling of the dynamic stall remains a challenge for the design and construction of turbine blades and helicopter rotors. At the same time, wind turbines, for instance, are becoming steadily larger, further increasing the demands on their structure and necessitating even more detailed modeling of the forces at hand. The primarily used (semi-)empirical models today have a long research history and are invariably based on phase-averaged data from oscillating blade pitch experiments. However, much potential for more accurate modeling of uncertainties and force peaks is wasted here, since averaging blurs many features of the response signals. Even computational fluid dynamics can help little in this regard, since the Reynolds-averaged Navier-Stokes equations used in practice cannot account for cycle variations, and scale-resolving models require extremely large amounts of computational resources. This paper presents an approach for a fully stochastic machine learning model that can nevertheless simulate these critical properties. Aerodynamic coefficients are compared with experimental data for different test cases. It is shown that synthetic force profiles can be generated which cannot be distinguished from the experimental data visually and are very close to them in the frequency spectrum. Additionally, attention is drawn to the difficulty of evaluating such a model, as traditional error metrics are of little use. A combination of Dynamic Time Warping and the Earth Mover Distance provides a robust solution for this problem.
Hydrographic features of Vilnius surroundings and their influence on the city development
Authors: Baubinienė Aldona , Vaitkevičius Gediminas , Morkūnaitė Regina , Bautrėnas Artūras
Published: April 2022

The article provides knowledge about less known small streams, flowing in the territory of Vilnius city, which extend less than 10 km or are little longer. In the article, it will also be told about the already "hidden" and forgotten small streams of Vilnius, which historically flowed abundantly in the city and its surroundings, provided the city's residents with drinking water, met household needs, and served as defensive fortifications. There is very little historical knowledge about the city’s small streams. Their presence can be judged only by assessing the city's terrain and natural conditions, analyzing old city plans, collecting archival information. With the expansion of Vilnius, important streams were flooded or drained, lost their significance and were forgotten. During the partial reconstruction of the hydrographic network of Vilnius, after studying the lithology of the historical period of the city, a temporary watercourse of Vilnius was discovered based on the location of gravelly rocks. These flows are important because of the fact that the first main streets of Vilnius stretched along their routes. Both now and in the past smaller streams had always had their role and getting to know them is important and necessary in restoring the former image of the city and the perception of the present and past of the times.
First finding of Aedes koreicus (Diptera: Culicidae) in the Netherlands
Authors: Teekema S. , Stroo A. , Uiterwijk M. , van de Vossenberg B. , Jacobs F. , Ibáñez‑Justicia A.
Published: April 2022

Since 2010, the Centre for Monitoring of Vectors (CMV) of the Netherlands Food and Consumer Product Safety Authority (NVWA), has a surveillance programme in place to detect and control invasive mosquito species (IMS) at locations with increased risk of importation. At the premises of companies that import used tyres from risk areas, the CMV implements surveillance using adult mosquito traps. In case of an IMS finding at a used tyre company location, the monitoring is intensified here (weekly sampling, additional BG-Sentinel traps and larval sampling), as well as within a predefined area with a radius of 500 m from the limits of the used tyre company location. On September 6th, 2021, eight Aedes larvae were found in a sample taken from a water-containing bucket. These larvae were both morphologically and molecularly (Illumina sequencing) identified as Aedes koreicus. Additional sampling at this first finding site of Ae. koreicus in the Netherlands, which was followed by mosquito control using larvicides, did not lead to further findings of the species.
COVID-19 and shortened integrated clinical experiences: impacts on acute care confidence and interpersonal communication
Authors: Dickson Tara , Perez Erin , DeVahl Julie
Published: April 2022

Purpose: Many doctor of physical therapy (DPT) programs limited student clinical experiences, including integrated clinical experiences (ICEs), in 2020 due to the restrictions of coronavirus disease 2019 (COVID-19) pandemic, without knowing how the abbreviated clinical exposure would influence student perceptions of psychomotor and interpersonal communication skill development. The purpose of this study was to determine if fewer ICEs resulted in a difference in acute care confidence or interpersonal communication skills for DPT students.
Methods: Two cohorts of DPT students completed surveys aimed to measure acute care confidence (Acute Care Confidence Survey [ACCS]) and interpersonal communication skills (Interpersonal Communication Questionnaire [ICQ]) pre- and post- ICE. Students in one of the cohorts completed half of their second ICE experience because of unexpected curricular changes, effectively decreasing their ICEs by 25%. Data was analyzed using paired t-tests and two-way repeated measures ANOVAs.
Results: There was a significant interaction on ACCS and ICQ by time. Students gained an average of approximately 440 points on the ACCS and 4.9 points on the ICQ over the course of both ICEs. However, there was not a statistically significant difference between cohort and either acute care confidence or interpersonal communication.
Conclusion: Curricular changes resulting in fewer ICEs did not appear to significantly influence student confidence in the acute care environment or with interpersonal communication skills. Students gained self-confidence in acute care practice and improved communication skills when involved in hands-on ICEs. These improvements were not seen during portions of the curriculum that did not involve inpatient experiences.
Determinants of Audit Quality
Authors: Al Shanti Nidhal
Published: April 2022

This research investigates the impact of auditor experience, auditor education, client’s internal controls, and audit procedures performed on audit quality in the UAE. An online Likert scale-based questionnaire was distributed to auditors with financial audit experience in the UAE. Multiple regression analysis was adopted to analyze data since more than one independent variable was investigated. The results demonstrate that auditor experience and auditor education are significantly and positively associated with audit quality, while client’s internal controls and audit procedures are not associated with audit quality.
Study of the importance of the Chalcididae Family in agriculture (Insecta: Hymenoptera)
Authors: Carlos Henrique Marchiori
Published: April 2022

Chalcidids of economic importance are associated with palm trees in Tropical America, since about 19 species of the family are associated with palm trees, a remarkable number. The parasitoids of this family are phytophagous insects, which are mainly Lepidoptera and Hispinae beetles, which attack the leaves of palm trees The objective of this mini review is to describe the economic importance of the Chalcididae Family. With emphasis on conceptual and taxonomic aspects was carried out in the years 1979 to 2021. Only complete articles published in scientific journals and expanded abstracts presented at national and international scientific events. Data were also obtained from platforms such as: Scielo Frontiers, Qeios, Pubmed, Biological Abstract, Publons, Dialnet, World, Wide Science, Springer, RefSeek, Microsoft Academic and Science.
社群媒體運用於企業對企業行銷成效之探索性分析
Authors: 田寒光 田寒光 , Han-Kuang Tien 張宜平
Published: April 2022

互聯網的發展導致了全球市場的開放。隨著社群時代的來臨，企業與客戶之間的交流是透過許多新興社群媒體進行的。因此，透過社群媒體與用戶互動並建立關係非常重要。產品和服務資訊的快速傳播，甚至對競爭對手和潛在目標市場的了解，已成為企業對企業（Business to Business，B2B）行銷人員不可忽略的一環。

全球的貿易模式在疫後正逐漸發生變化。貿易模式造成的訂單碎片化已經與傳統模式大相徑庭。許多國外研究報告表明，B2B企業可以透過運用社群媒體為核心行銷管道取得突破和進展。而大多數 B2B 公司仍處於起步階段，因為許多 B2B 從業者仍然不確定是否或如何有效地使用社群媒體。因此，本研究嘗試在商業運用發展的背景下探討「B2B環境中的社群媒體」現象，增加對於B2B在社群媒體行銷方面的理解與運用。

本研究以質性研究（Qualitative Research）作為研究方法，研究對象是行銷領域中的顧問專家及B2B廠商運用社群媒體行銷超過五年的企業主管。採用質性研究能獲得更深入的了解，並從中發現及說明瞭解B2B行銷中如何使用社群媒體。研究歸納出以下之結論：(1) 提升品牌價值，透過內容行銷策略提供專業知識，強化品牌競爭力；(2)創造內容價值，持續發佈實用的內容資訊，累積人脈、信用及收益；(3) 增加客戶價值，客戶參與創新過程以產生連結。

 

The development of the internet has led to the opening of global markets. With the advent of the social age, the communication between companies and customers is through many emerging social media. Therefore, it is very important to interact with users and build relationships through online social media. The rapid dissemination of product and service information, and even understanding of competitors and potential target markets, has become an important part of Business to Business (B2B) marketers.

Global trade patterns are gradually changing after the epidemic. The fragmentation of orders caused by trade model is already very different from traditional one. Many foreign research reports have shown that B2B companies can make breakthroughs and progress by using social media as their core marketing channel. In order to reach customers, companies have invested in the ranks of social marketing, grabbing the attention of consumers. Most B2B companies are still in their infancy, because many B2B practitioners are still unsure whether or how to use social media effectively.

This study uses qualitative research as the research methods. Focusing on interviewing consultant and experts and corporate executives of B2B vendors who use social media as marketing channel for more than five years. We summarize the conclusions as following：(1) Promote brand value，Provide professional knowledge through content marketing strategy to strengthen brand competitiveness；(p2) Create the value of content，Continue to publish useful information to accumulate contacts, credit；(3) Increase customer value，Customers participate in the innovation process to generate connections.

 
消費者偏好基礎之品牌鑑價法探討
Authors: 王國梅 王國梅 , 任立中 任立中
Published: April 2022

品牌權益（Brand Equity）是指品牌使產品價值超出其自身功能價值之上，產生更高的附加價值（Farquhar, 1990）。品牌權益可分別從財務價值構面、消費者觀點之行銷構面、及綜合構面探討。現今消費者意識抬頭更勝從前，行銷策略有效結合消費者觀點，可促使企業與消費者之間達到雙嬴交易。本研究以消費者觀點運用聯合分析法進行品牌鑑價衡量，以市面上通路易取得之白酒產品作為研究標的，經由抽樣問卷調查，進行消費者主觀意向知覺與偏好研究。藉由聯合分析法取得個別受訪者相對產品屬性偏好係數，回推品牌、屬性差異之願付價格，可細推分析單一受訪者個別偏好，了解消費者如何在不同產品中進行選擇，進而推估品牌相對價值。依據個別消費者異質性價格溢酬，廠商便可作為衡量一對一互動行銷策略之參考依據。研究結果衡量出的品牌價值，可提供企業探究自我品牌市場定位、產品屬性優勢及了解消費者對品牌評價觀點，強化企業競爭力並預測消費者購買決策，作為未來市場行銷計畫擬訂之參考，為本研究對行銷策略實務意涵之貢獻。

 

Brand equity refers to the brand’s ability to generate higher added value by exceeding the value of a product beyond its own functional value (Farquhar, 1990). Brand equity can be discussed from the financial value structure, the marketing aspect of consumer views, and the comprehensive aspect. Today’s consumer awareness is rising more than before, and marketing strategies that effectively combine consumer perspectives can promote win-win transactions between enterprises and consumers. This study uses the joint analysis method of consumer views to measure brand price, takes the liquor products obtained by sold on the market as the research target, and conducts research on consumers’ subjective intention perception and preference through sampling questionnaires. By obtaining the relative product attribute preference coefficient of individual respondents through the joint analysis method, and pushing back the willing price of brand and attribute difference, the individual preference of a single respondent can be carefully analyzed to understand how consumers choose between different products, and then the relative value of the brand can be estimated. Based on the heterogeneous price of individual consumers, enterprises can use it as a reference for measuring one-to-one interactive marketing strategies. The brand value measured by the research results can provide enterprises to explore their own brand market positioning, product attribute advantages and understand consumers’ views on brand evaluation, strengthen corporate competitiveness and predict consumer purchase decisions, as a reference for the formulation of future marketing plans, and contribute to the practical meaning of this study on marketing strategies.

 
Does COVID-19 prevention performance protect shareholders wealth in tourism-related industries?
Authors: Chih-Hsiang Chang Chih-Hsiang Chang , Chih-Hsiang Chang Chun-Ling Lin , Chun-Ling Lin Chia-Ching Tsai
Published: April 2022

The outbreak of infectious diseases inevitably causes a significant decline in the performance of the tourism, hospitality, and leisure industries. However, the impact of active epidemic-prevention measures on their performance, due to restrictions on daily activities, and that of proper epidemic control on the expectations of improved future performance, remain unexplored. This study aimed to investigate the effect of the announcement of Taiwan’s first confirmed COVID-19 case on shareholders’ wealth, stock trading frequency, and investment risk. Taiwan’s excellent epidemic-prevention performance makes its stock markets an appropriate empirical target to investigate the effects on stock price, trading volume, and return volatility, to obtain a comprehensive picture of investors’ behavior and reactions. Our results show that although active epidemic prevention did not prevent severe accounting performance decline, it only had a mild, short-term effect on investment performance. Thus, it protected shareholders’ wealth and strengthened their ability and willingness to continue business operations.

 
dis/cord
Authors: Toksöz Fairbarn Kevin
Published: April 2022

dis/cord is an experiment in reading sound. Embarking from Karen Barad’s early work on agential realism, it diffracts quantum physics through sound art, finding the sympathetic resonances that allow them to speak together. dis/cord believes in the materialism of sound, and strives not to understand it, but to become entangled with it. It asserts that impartial observation is impossible and understands immersion as a participatory and collaborative act. Sound art pieces provide the backdrop for a series of reflections on space, time, and matter. They trace the “marks on bodies” that sound leaves behind in its ephemeral vibration, finding new forms of sensation and interpretation through the pain and hearing loss that a life devoted to sound can cause.

Drifting between sound studies, artistic research, musicology, and craftsmanship, dis/cord uses agential realism as a platform to approach thinking with, through, and about sound. Following Barad’s commitment to diffraction as a form of critique, it superposes a variety of sounds and ideas in the hope that their consonances and dissonances can provoke new ways of engaging with sound as a cultural and material agent. It is neither an appeal to scientist positivism nor a mystical immersion in listening. Rather, it builds from the intertwined physical and metaphysical curiosities that characterize Barad’s work, proposing a corporeal engagement with the disjointed temporal and spacial (dis)continuities that sonic materialism helps to build, understand, and create.
Consideração da interação solo-estrutura: influência nos recalques diferenciais e nas distorções angulares de uma fundação
Authors: Jordão Junior José Valdeildo Moreira , Bello Maria Isabela Marques da Cunha , Silva Júnior Raimundo Paulo da , Patrício Jonny Dantas , Da Silva Jefferson Pedro
Published: April 2022

Os valores dos recalques por distorção angular ou deslocamentos limites de uma fundação são fundamentais para verificação de atendimento à segurança e desempenho da construção. Este artigo apresenta os efeitos dos recalques por distorção angular em fundação de um edifício com sistema construtivo parede de concreto armado. Foram utilizados os valores dos recalques absolutos estimados no anteprojeto (sem consideração da interação solo-estrutura), os calculados pelo modelo numérico e os obtidos por monitoramento de campo. Verificou-se que o recalque diferencial máximo estimado em anteprojeto foi 0,59 mm, 8,0 mm para o modelo numérico e 8,4 mm para recalques monitorados em campo, não ultrapassando o limite de 25 mm para fundação radier em areia, sendo considerados admissíveis. Os valores da distorção angular para o modelo numérico e a estimativa do anteprojeto foram abaixo do 1/1000, sendo irrelevante. Considerando os recalques absolutos monitorados, os valores da distorção angular ficaram acima de 1/500, sendo o limite seguro para impedir danos em paredes. Todos os valores dos recalques diferenciais e das distorções angulares foram satisfatórios, não oferecerndo risco estrutural.
A competência da pessoa cega na orientação e mobilidade: uma reflexão plausível
Authors: Faria Maria Soraia Nascimento Corrêa de , Silva Paulo Roberto de Jesus , Braga Kayla Rocha , Silva Thays Nayara Frazão
Published: April 2022

A pessoa cega andar sozinha, com bengala longa e sem guia vidente, por diversos lugares, ainda causa admiração às pessoas que desconhecem as diversas competências de uma pessoa com cegueira, provavelmente por falta de informação, e em alguns casos, conceitos prévios equivocados. Nesse contexto, essa pesquisa teve como objetivo analisar e esclarecer sobre o desenvolvimento do processo de orientação para executar uma locomoção com eficiência, segurança e conforto das pessoas cegas. O estudo, com metodologia de abordagem qualitativa, inicia-se com a realização de pesquisa bibliográfica trazendo à baila estudos sobre as habilidades e competências desenvolvidas na Orientação e Mobilidade que fortalecem o entendimento sobre o papel das outras percepções, além da visão. Como resultados se constatou que a competência fundamental para que as pessoas cegas adquiram independência na Orientação e Mobilidade é autonomia, pois assim superam limites, superam barreiras e tornam-se agentes construtores de uma sociedade inclusiva.
Infection control in dentistry
Authors: Narang Deepak , Bali Vikram , Bashir Wassem
Published: April 2022

Infection control is important in the practice of dentistry because dental healthcare workers and patients are exposed to e wide variety of microorganisms through blood and oral secretions. A long history of scientific, clinical and technological developments has led to the current recommendations for infection control in dentistry and medicine. As a result, health care workers and their patients have never been protected from occupational transmission of pathogens. Engineering and re-emerging infection control challenges will continue to confront the health profession in the 21st century. In addition, procedures aimed at preventing the spread of infectious disease are constantly being evaluated and updated. Among the important components of any infection control success, however, always will be remembering and understanding the rationale for appropriate practices. The routine applications of precautions such as multiple aseptic procedures, latex gloves, masks, protective eyewear, clinic coats, automated instrument decontamination devices, time-efficient heat sterilization modalities, chemical disinfectants, waste management procedures and single-use disposable items have created a safer environment for dental personal and patients alike. Hence the review aimed at stressing the importance of sterilization and disinfection in dental practice
Anchorage in orthodontics
Authors: Jandial Madhav , Prashar Anil , Mahajan Sugandhi
Published: April 2022

Before starting active treatment of any orthodontic case, anchorage mustbe planned well to get rid of the problems that might accompanied the treatment procedures. This article reviewed the anchorage from all aspects starting from the definition, sources, types, planning, anchorage loss and how to avoid it.
Orthodontic emergency administration/management
Authors: Chabbra Monika , Soni Sanjeev
Published: April 2022

The aim of this review article is to understand management of any emergency arising to the orthodontic patients during treatment and also management during corona virus pandemic. although there is no actual emergency, only few cases require immediate attention. Different commonly occurring problems are discussed along with analysis of different management methods. Any emergency relating to dental problems can also be evaluated using a social networking site (WhatsApp)  or instructions given verbally as a  mode of contacting patients and evaluating their issues especially during covid-19 scenario.
Understanding the role of resective osseous surgical procedure in chronic periodontitis patients
Authors: Gupta Gagandeep , Goyal Tanya , Verma Vedika
Published: April 2022

Variety of treatment approaches have been developed and used to treat periodontal diseases associated with attachment loss. While the goal of periodontal surgical treatments is to access the root surfaces for proper debridement, the decision to remove or reshape the supporting bone has been controversial. Osseous resective surgery necessitates following the use of strict guidelines for proper recontouring of the alveolar bone and proper management and positioning of the gingival tissues so that the results from osseous resective surgery are highly predictable.
Major breakthroughs in the field of biopesticides in recent antiquity
Authors: Rana Anamika , Sharma Raj Shekhar , Kamal Rohit , Panthri Divyansh , Kumar Yogesh , Sharma Shruti , Sharma Abhit , Tyagi Manjusha , Som Deepak
Published: April 2022

The world's population is rapidly increasing, putting a colossal strain on the world's food supply. Pesticides are one of the most frequent strategies for increasing food production, but their continued usage has some pessimistic consequences for the environment. Over the last two decades, there has been a surge in interest in biopesticides as a prospective replacement. A bibliometric study was conducted from 2002 to 2021 to identify the scientific evolution of biopesticides. In the dimension database, a total of 5680 documents were identified as suitable for this analysis. The documents were analyzed, and nations were ranked based on authors, productivity, article citations, and co-authorship using parameters such as the number of papers, article citations, keywords, source impact, and country of publication. From 2002 to 2021, Pest Management Science and the Journal of Economic Entomology produced the most articles as well as the top contributions in biopesticide publishing by authors Benelli (first) and Tyagi (second). In 2006, Halkier received the highest degree of citation, while Berg received the highest level of citation in 2009. The University of Queensland and the University of Florida were the top two institutes that contributed to the publication of biopesticides.
Impact of tobacco on periodontium
Authors: Charokar Aarti , Gupta Abhishek
Published: April 2022

Tobacco is the major risk for causing oral lesion or disease as well as systemic disease. Tobacco smoking and chewing is a significant contributing factor of periodontal health. The bacteria that are involved in periodontitis accumulate in the subgingival plaque that comprises predominantly of Gram negative strict anaerobes. This clinical study was designed to evaluate the clinical, microbiological changes in Tobacco user and compared these to the Non Tobacco user. 400 subjects were enrolled with an age distribution from 20-55 years complain with periodontitis, Subject were classified in four group Tobacco chewers, Tobacco smokers, Both chewers and smokers and non tobacco user. To identify the growth of anaerobic bacteria using anaerobic culture method in periodontitis patient. To analyse prevalence of  periodontal disease among tobacco user a descriptive  method involving the colony forming units per millilitre (CFU/ml) and mean of the total flora percentage.  The study shows a high percentage of anaerobic bacteria in tobacco smokers compare with tobacco chewers and non tobacco user. On the basis of CFU/ml and mean% of the total flora. Tobacco smokers show high percentage of anaerobic bacteria compare to other subject.
Assessment of stress, anxiety and depression during COVID-19 among dental students of Bhubaneswar City, Odisha
Authors: Choudhury Shatabdi , Bhuvaneshwari S. , Manohar Balaji , Dash Payal , Goel Saurabh , Mathur Hemant
Published: April 2022

Introduction: Covid-19 began in Wuhan, China in the month of December 2019 and over a period of time, the infection outspread across the world in a rapid pace.It has put the entire world's population at risk of infection, which is a huge source of worry, particularly for vulnerable populations like dental students.This study is aimed for the assessment of stress, anxiety and depression during Covid 19 on dental college students of Bhubaneswar city. Methods: This was a cross-sectional, questionnaire survey conducted over the internet. It administered 222 students. The students were assessed by a proforma containing demographic details and DASS 21. Statistical analysis was done using the SPSS version 26.0 using Chi square test. Results: In our study females were 57.7% (n=128) and 42.3% (n=94) were males In the study maximum number of participants were found to be in the age range of 19-22 with 48.6% (n=108) followed by age range of 23-26 with 46.8% (n=104).The mean Age of the study population is 22.75±1.937 and the mean score of depression, stress and anxiety was 19.66±10.923, 20.43±10.330 and 15.14±9.263 respectively.
Impact of age and diet on semen quality and male fertility
Authors: Seriki S. A , Mfem C. C , Oyama S. E , Otoikhila O. C
Published: April 2022

Semen analysis is comprised of a set of descriptive measurements of spermatozoa and seminal fluid parameters that help to estimate semen quality and quantity. It provides useful information concerning sperm production, sperm morphology, sperm motility and viability. The analysis also involves determination of patency of the male genital tract, secretions of the accessory organs, as well as ejaculation and emission. The purpose for semen analysis is to determine the semen constituents (both macroscopically and microscopically), determine the semen analytic parameters of men from relatively the same region, and distinguish these acquired parameters of every male subject in this project with respect to those with the possibility of infertility. (not definitive measure of fertility), and use the study to improve the knowledge of individuals interested in or affected by any form of sperm abnormalities. This is to reduce the need for more complicated interventions for the female partner, and rule out significant medical problems that may be contributing to a poor semen analysis.
Analysis of DC motor driven laparoscopic device for oncology
Authors: Indira S , Kannaian T
Published: April 2022

In every hospitals Patient handling equipment Laparoscopic, high-quality pumps, centrifuges, infusion pumps, insulin pumps, hemodialysis machines, compressors, respirators, scanners, dental drills, precision surgical hand pieces, surgical robot grippers, prosthesis and implantable devices (ventricular assist devices, pacemakers, defibrillators, nerve stimulators, and so on) are needed small electric motors. Electric motors are also very essential in healthcare equipment, such as exercisers, wheelchairs, massage machines, treatment machines, and so on. This research work focuses on Laparoscopic device, in this device very compact DC motor is used. In this research work the electrical and mechanical characteristics of Compact DC motors are analyzed. The simulation work was done in MATLAB simulation and results are discussed.
Influence of body mass index on oral health among equines in Tamilnadu, India
Authors: Suganya P , Rajmohan Rajmohan , Bharathwaj V. V , Dhamodhar Dinesh , Prabu D , Prashanthy M. R.
Published: April 2022

Aim: The aim of this study is to analyze the association of body mass index and oral health status among equines in Tamilnadu, India Materials And Methods: A descriptive study was conducted among 108 horses from blue cross of Tamilnadu and various veterinary colleges based on simple random sampling method. The body mass index of horses were recorded Henneke Body Condition Scoring and their oral health status were examined. The collected data was analyzed and tabulated using chi-square test. P value <0.05 was considered to be statistically significant. Results: There was a statistically significant relation was found between gingivitis (P<0.001), calculus (P=0.004), dental caries (P=0.004), plaque (P=0.007), dental erosion (P<0.001) and BMI. Conclusion: The body mass index have a strong impact on the oral health of horses. Proper nutritional measures should be taken to overcome the problem.
Solving the second kind linear volterra integrodifferential equations using the complex SEE integral transform
Authors: Mehdi Sadiq A. , Kuffi Emad A. , Mansour Eman A.
Published: April 2022

As an important type of integral equation, Volterra integral equations snatch the focus of many scientists and mathematicians to provide approximate or exact solutions to such equations. The integral transform capability of providing an algebraic solution to the integral equations led the mathematical community to lean heavily on them to solve those kinds of equations, including the Volterra integrodifferential equations of the second kind. This paper uses the complex SEE integral transform to find the exact solution to the second kind linear Volterra integrodifferential equation. The capability and efficiency of complex SEE integral transform in providing an exact solution with the minimum number of computations possible are demonstrated via practical applications.
Bioengineered membranes-past, present and future in tissue regeneration
Authors: Bhojak Ankita , Arora Sachit Anand , Kalsi Rupali , Barman Chikku , Peku Hiba , Singh Kumar Saurav
Published: April 2022

Regeneration of soft and hard tissue defects, although not impossible, is not always a predictable outcome. Tissue Engineering has shown to be successful in regenerating such defects with the objective of development of a new functional tissue structure which is either scaffold-based or not. Currently, the barrier membranes are being used as a physical barrier for the growth of unwanted epithelial and connective tissue cells while promoting the growth of desired cells like those of periodontal ligament and bone cells, which is quite appreciable. But due to the various drawbacks of the conventional membranes, TE has led to the development of functionally enhanced membranes processed by a variety of techniques and materials which overcome the demerits of the currently used barrier membranes. The objectives of this review are to compare the resorbable and non-resorbable barrier membranes used in tissue regeneration, their properties, applications, merits and demerits and future advances.