bluuebunny/crossref_metadata_2025 huggingface dataset:
Acurácia de instrumentos de custo acessível para triagem auditiva de adultos e idosos
Authors: Balen Sheila Andreoli , Vital Bianca Stephany Barbosa , Pereira Rhadimylla Nágila , Lima Taise Ferreira de , Barros Daniele Montenegro da Silva , Lopez Esteban Alejandro , Diniz Junior Jose , Valentim Ricardo Alexsandro de Medeiros , Ferrari Deborah Viviane
Published: July 2021

RESUMO Objetivo Avaliar a acurácia de instrumentos de custo acessível para triagem auditiva de adultos e idosos. Método Este estudo foi realizado com usuários de um Serviço de Saúde Auditiva do SUS. Todos foram submetidos a triagem com o aplicativo de smartphone MoBASA, o audiômetro Telessaúde (TS) e a versão eletrônica do Questionário de Handicap da Audição para Idosos (Hearing Handicap Inventory for the Elderly – screening version - eHHIE-S). Os examinadores foram cegos quanto aos resultados dos testes de triagem e para os dados de audiometria de tom puro (ATP). Foram considerados com deficiência auditiva aqueles com média quadritonal na ATP maiores que 40 dB na melhor orelha. Sensibilidade, especificidade e valores preditivos positivo (VPP) e negativo (VPN) foram calculados. O índice Kappa foi usado como um indicador de concordância entre ATP e os resultados da triagem. Resultados A amostra constou de 80 indivíduos entre 18 a 94 anos (55,18 ± 20,21). Na ATP, 21 indivíduos (26,25%) apresentaram audição normal e 59 (73,75%) perda auditiva incapacitante. Nos testes de triagem auditiva observou-se valores de sensibilidade, especificidade, VPP e VPN maiores do que 75% no MoBASA e na sensibilidade e VPN do TS e eHHIE-S. Já a especificidade e VPP do TS e eHHIE-S foram inferiores a 75%. O índice Kappa indicou concordância substancial (0,6) entre o ATP e os resultados do MoBASA. No TS e eHHIE-S foi constatada regular concordância (0,3). Conclusão O MoBASA demonstrou ser um método acurado para triagem auditiva de adultos e idosos com perda auditiva incapacitante.
Potassium sources and calcium and magnesium doses in carrot crop fertilization
Authors: Rodrigues Neto João , Pereira Daniel P , Torres José Luiz R , Carvalho Fabio J , Charlo Hamilton César de O
Published: July 2021

ABSTRACT Fertilization has an important influence on carrot productivity and on the quality of the produced root, being responsible for most of the production cost of the crop. In this context, we evaluated the use of potassium (K) sources associated with calcium (Ca) and magnesium (Mg) doses in carrot cultivation. In a randomized block design in a triple factorial scheme (2x2x2), we evaluated two doses and sources of potassium [potassium chloride (KCl), 120 kg ha-1 of K2O; potassium sulfate (K2SO4) 120 kg ha-1 of K2O + 42,5 kg ha-1 of S]; Two doses of Mg [magnesium sulfate (MgSO4), zero kg ha-1 of Mg; 25 kg ha-1 of Mg + 34,2 kg ha-1 of S]; two doses of the commercial algae product Lithothamnium calcareum as an alternative source of Ca [zero kg ha-1 of seaweed; 200 kg ha-1 of seaweed (24 kg ha-1 of Ca)], all with six replications. Total productivity, 3A, commercial and percentage of discard carrot were evaluated. Regardless of the source of K used, the carrot production was median (above 40 t ha-1), with no application of Ca or Mg. The application of 25 kg ha-1 of Mg and zero Ca altered the Ca:Mg ratio in the soil and provided a significant increase in yield when KCl was used. The association of L. calcareum algae with KCl reduces total yield and increases carrot disposal.
Growth of yacon under artificial shading
Authors: Teixeira Ariany das Graças , Oliveira Fábio Luiz de , Mendes Tiago P , Cavatte Paulo Cezar , Parajara Magno do C , Lima Wallace Luís
Published: July 2021

ABSTRACT Yacon is a tuberous root cultivated in mild climate regions with high altitudes, but the crop shows the capacity to develop at low altitudes. The objective of this study was to evaluate growth rates and the partition of photoassimilates in yacon plants under different levels of artificial shading. The experiment was conducted in four shading levels (0%, 30%, 50% and 70%), and seven monthly harvests in a completely randomized design. We evaluated the accumulation of total dry mass on the whole plant and its parts; leaf area; leaf area ratio; leaf mass fraction; stem mass fraction; rhizophores mass fraction; tuberous roots mass fraction; estimates of relative growth rate, absolute growth, and net assimilation. The lower accumulation of total dry biomass and the lowest growth rates indicate that conditions of noticeable light restriction (70% shading) restrict the growth of yacon. Yacon plants grown under moderate shading levels (30 to 50%) showed greater capacity of accumulation of total biomass, directing part of this biomass to the tuberous roots, which directly reflects gains in the agronomic productivity of this crop, indicating that yacon has the potential to be associated with other crops, which promote a moderate shading.
Endemic Atlantic Forest species of Caryophyllales as inhibitors of viral infection in zucchini
Authors: Pereira Marcos Vinicius M , Alexandre Maria Amélia V , Chaves Alexandre Levi R , Souza Ana Cláudia O de , Bernacci Luís Carlos , Nagai Alice , Santos Déborah Yara AC dos , Duarte Lígia Maria L
Published: July 2021

ABSTRACT In Brazil, zucchini (Cucurbita pepo) is a socioeconomically important vegetable affected by damage caused primarily by zucchini yellow mosaic virus (ZYMV). Although the occurrence of cucumber mosaic virus (CMV) is less frequent, in C. pepo ‘Caserta’ plants it can cause symptoms such as mottle, mosaic, leaf and fruit distortion, as well as reduced plant development. To minimize the damage, the most widely used management technique is the preventive, albeit inefficient, application of insecticides, aimed at controlling aphids, the vectors of this virus. Thus, the search for more effective and less environmentally harmful control methods has been the target of investigations. The purpose of the present study was to assess the action of the extracts of four native Caryophyllales species, as inhibitors of infection by CMV and ZYMV in C. pepo, in addition to evaluating the possible induced resistance in this species. Fresh leaf extracts (LEs) of Guapira opposita, Pisonia ambigua (Nyctaginaceae), Gallesia integrifolia and Seguieria langsdorffii (Phytolaccaceae), previously assessed in the tobacco mosaic virus / Nicotiana glutinosa pathosystem, were submitted to progressive dilutions sprayed on cotyledonary C. pepo leaves 30 min before inoculation with CMV and ZYMV. Leaf extracts of G. integrifolia did not induce inhibition in any of the pathosystems assessed. Guapira opposita LEs inhibited the infection of plants inoculated with ZYMV below 50% but inhibited CMV infection by 70% at a concentration of 1:40. Given that leaf extracts of P. ambigua and S. langsdorffii induced high percentage inhibition, evident in the number of asymptomatic plants and confirmed by serological tests, these species were selected to assess induced resistance in pre-treatment experiments. The LEs were efficient in inhibiting ZYMV and CMV infection in C. pepo when applied up to 48 h before inoculation. The LEs of S. langsdorffii and G. opposita, also tested for this system, were efficient when applied up to 72 h before CMV inoculation. The LEs can be prepared from dry leaves and maintained at -20°C for at least three years, conserving their inhibitory activity. These results expand the possibilities for producers and consumers alike in the sustainable management of the main zucchini viruses, without damaging the environment.
Growth, yield and dormancy of aeroponically produced potato minitubers as a function of planting density and harvesting date
Authors: Balena Leonardo , Malanchuk João Pedro , Tamanini Junior Cleto , Ribas Erica L , Eschemback Vlandiney , Kawakami Jackson
Published: July 2021

ABSTRACT Potato seed is one of the largest costs of a crop. This is mostly due to the incidence and spread of viruses that occurs when the crop is grown in the open field. Thus, it is necessary to obtain virus-free potato plantlets through meristem isolation, with subsequent cultivation in a protected environment, where it is easier to control virus-spreading insects. One way to increase greenhouse viability is by multiplicating potato seed using high technology systems, among them, aeroponics. The objective of this work was to determine the effect of planting density on the growth and yield of potato plants cv. Agata in aeroponic cultivation, and the effect of harvesting dates and planting densities on the dormancy of harvested minitubers. The number of stems, leaves, and the number and fresh weight of minitubers/plant reduced when planting density was increased from 60 to 180 plants/m2. However, the number of stems, leaves, initiated minitubers, and the number and fresh weight of minitubers/m2 increased when planting density was increased from 60 to 180 plants/m2. The maximum number of type III minitubers (>30 mm) was 613/m2, obtained at the density of 180 plants/m2. Plant density did not affect the dormancy of harvested minitubers, but harvesting date did. Minitubers obtained from latter harvesting dates had a shorter dormancy period. Minitubers harvested at 78 and 64 days after transplanting sprouted 21 and seven days earlier than those picked at 50 days after transplanting.
Evaluation of okra landraces based on agronomic and biochemical traits
Authors: Araújo João Pedro D de , Zeffa Douglas M , Spinosa Wilma Aparecida , Ventura Mauricio U , Corte Lígia Erpen-Dalla , Gonçalves Leandro SA , Silva Gabriel Augusto B da , Resende Juliano Tadeu V de , Constantino Leonel Vinicius
Published: July 2021

ABSTRACT Okra is consumed in several countries and is an important source of nutrients for human food. To promote okra production and consumption is essential the development of new cultivars with high nutritional levels, besides desirable agronomic traits. Thus, this study aimed to evaluate nine okra landraces by agronomic and biochemical traits. The accessions UEL2, UEL3, UEL5, UEL6, UEL7, UEL9, UEL10, UEL13 and UEL15 were grown in open field condition and evaluated in relation to fruit yield, fruit weight, fruit diameter, number of fruits per plant and plant height. The biochemical analysis included mineral composition, crude protein content, vitamin C content, total flavonoid and phenolic content and antioxidant activity. The UEL7 accession stood out for the high levels for biochemical traits such as content of some minerals, vitamin C and antioxidant activity. On the other hand, UEL3 accession had a low performance for biochemical traits, but stood out for agronomic traits such as fruit yield and number of fruits per plant. Hence, the UEL7 and UEL3 landraces may be introduced in breeding programs focused on human food and agronomic performance, beyond to contribute for okra germplasm conservation.
Laboratory investigation of backfill erosion around rigid pipes with defective joints
Authors: Qin Xiaogang , Moore Ian D.
Published: July 2021

Water infiltration is one of the most significant underlying causes of deterioration in buried rigid pipes, which can bring about erosion voids in the backfill that will increase the severity of the soil loading and produce structural failures. Based on model tests, the effect on the erosion is examined for two infiltration scenarios involving a defective joint. Joint leakage is represented using idealised apertures across the invert. Monitoring of the mass flux of sand, the flow rate of water and the development of visible voids enabled the identification of three successive stages during infiltration erosion: initial leakage, primary erosion and then a metastable state. Initial voids occurred at the elevation near the air-entry head in the backfill, then extended downwards to the wide aperture, while the bridge formed in the narrow aperture limited further erosion and reduced the permeability. A practical framework was proposed and verified to predict the geometry of the void envelopes in the backfill for different experimental scenarios.
Field measurements and numerical analysis of vibroflotation of sand
Authors: Nagula Sparsha , Nguyen Michael , Grabe Jürgen , Kardel Jens , Bahl Thorsten
Published: July 2021

Vibroflotation is an established ground improvement technique for granular materials. It densifies loose sands by means of shear and compressive deformation processes imparted by the horizontal vibrations of a vibrator probe at the required soil depth. The field experience and empirical relations used for the design of vibroflotation processes prompt further study and analysis. Numerical simulations of the method help provide insight into the process. A coupled Eulerian–Lagrangian framework was used to model the compaction process. The compaction process was modelled based on the pilgrim step method for a depth range from 25 m to 10 m. A hypoplastic constitutive model was used to characterise the stress–strain behaviour of the fine sand. Numerical results were validated against in-field cone penetration test measurements made before and after the compaction of fine sand in east Germany. The validation was followed by a parametric study in which the following were evaluated in terms of their effects on the extent and degree of compaction: frequency, relative density, shape of vibrator, spacing of compaction points, nature of compaction process and type of sand.
Spatial analysis of blue and green water footprints of agricultural crop patterns: Turkey
Authors: Muratoglu Abdullah , Avanoz Zehra
Published: July 2021

The agricultural sector is responsible for around 85% of global freshwater consumption. Spatial variations of the water footprint (WF) of agricultural products can be employed to mitigate regional and global problems concerning water scarcity. In this study, the agricultural WF of Turkey at administrative boundary level based on a diverse crop pattern was analysed. The total, per capita and per land area blue and green WFs and virtual water contents (VWCs) of 81 agricultural products were calculated for administrative boundaries. Accordingly, the national WF of agricultural production was estimated to be 107 × 109 m3, of which 56% is blue water. Cereals constitute the largest share of the national WF (57%), mostly due to the production of wheat, barley and maize. Detailed maps and quantifications of VWCs and total, per capita and per land area WFs of various crops are illustrated in this paper. To the authors’ knowledge, this study is the most comprehensive work carried out in the study area to date, with a wide range of crop patterns and administrative boundaries taken into account. This work is expected to contribute to national and international water management studies by proposing and discussing the water intensity of agricultural products at high spatial resolution.
Impact of an emergent model vegetation patch on flow adjustment and velocity
Authors: Liu Chao , Shan Yuqi
Published: July 2021

This study achieved three goals to clarify the impact of a vegetation patch on flow adjustment and velocity. First, a valid equation for the interior adjustment distance (Ld) inside a model patch was developed for a wide range of velocities and flow depths. Second, the minimum distance inside a patch beyond which the resuspension of fine sediment is suppressed (Lmin) was found to be related to the position at which the local velocity decreases to the threshold for generating stem-scale turbulence. Lmin primarily depends on the flow blockage (Cdab) and the stem diameter (d): a shorter Lmin is a result of a larger Cdab and a smaller d. An equation was formulated for estimating Lmin. Third, for the fully developed flow region inside a patch (L > x > Ld), an equation was developed to estimate the increase in the mean velocity in the bare channel relative to the overall mean channel velocity. For Cdab < 2, this fraction is controlled by both the patch density (ad) and the patch blockage (b/B) whereas, for Cdab > 2, this fraction is controlled by only b/B. A suggestion for choosing the patch size in future flow and sediment research projects is presented.
Large-Scale Proteomic Assessment of Urinary Extracellular Vesicles Highlights Their Reliability in Reflecting Protein Changes in the Kidney
Authors: Wu Qi , Poulsen Søren B. , Murali Sathish K. , Grimm Paul R. , Su Xiao-Tong , Delpire Eric , Welling Paul A. , Ellison David H. , Fenton Robert A.
Published: July 2021

Significance Statement

Measurement of urinary extracellular vesicle (uEV) protein abundances is frequently used to reflect ongoing (patho)physiologic processes in the kidney. However, whether protein abundances in uEVs and the kidney directly correlate, or whether (patho)physiologic alterations in protein levels in the kidney can be determined by assessing protein changes in uEVs, has never been comprehensively determined. Here, quantitative proteomic data indicate protein abundances in uEVs and kidney in rats are correlated, with a monotonic relationship between altered transporter protein abundance in uEVs and the kidney after a physiologic stimulation. Therefore, it is valid to draw conclusions from altered protein levels in uEVs for particular protein classes and relate them to changes in the kidney.

Background

Urinary extracellular vesicles (uEVs) are secreted into urine by cells from the kidneys and urinary tract. Although changes in uEV proteins are used for quantitative assessment of protein levels in the kidney or biomarker discovery, whether they faithfully reflect (patho)physiologic changes in the kidney is a matter of debate.

Methods

Mass spectrometry was used to compare in an unbiased manner the correlations between protein levels in uEVs and kidney tissue from the same animal. Studies were performed on rats fed a normal or high K+ diet.

Results

Absolute quantification determined a positive correlation (Pearson R=0.46 or 0.45, control or high K+ respectively, P<0.0001) between the approximately 1000 proteins identified in uEVs and corresponding kidney tissue. Transmembrane proteins had greater positive correlations relative to cytoplasmic proteins. Proteins with high correlations (R>0.9), included exosome markers Tsg101 and Alix. Relative quantification highlighted a monotonic relationship between altered transporter/channel abundances in uEVs and the kidney after dietary K+ manipulation. Analysis of genetic mouse models also revealed correlations between uEVs and kidney.

Conclusion

This large-scale unbiased analysis identifies uEV proteins that track the abundance of the parent proteins in the kidney. The data form a novel resource for the kidney community and support the reliability of using uEV protein changes to monitor specific physiologic responses and disease mechanisms.
Research Trend Analysis of International Students in the Tourism Journals in Korea : A Review of KCI Papers Published in 2007~2020
Authors:   The Tourism Sciences Society Of Korea, Cha Suk-Bin
Published: July 2021

Using a content analysis technique, this study qualitatively analyzed 68 international student papers published in 15 journals registered with the Korea Research Foundation between 2007 and 2020 to identify research trends. Research findings are as follows: First, research related to international students began in 2007, and research was activated from 2010. The nationality of the study sample was found to be predominantly Chinese. Second, the research categories were classified into education, tourism, leisure, and food life. The detailed topics of the education category included: the selection attribute (motivation) of the major, acculturation stress, service quality, dropout rate, and ‘other’. The detailed topics of the tourism category included: selection attributes, image, medical tourism, visiting and relatives host, and ‘other’. The sub-themes of the leisure category were classified as: leisure constraints, leisure status, leisure values, and acculturation. The sub-themes of food life were classified into: selection attributes, preferences, and ‘other’. Compared with previous studies, research in the tourism field showed that there were insufficient studies after studying abroad such as dropouts and career paths. Finally, it was found that quantitative studies were overwhelmingly large in the analysis method. Based on the results, the study suggests that study on international students of various nationalities, diversification of research topics, and more qualitative research or a hybrid study of qualitative and quantitative research are needed in the future.
The Effect of Defect of Ugly Food on Perceived Quality, Authenticity, Intention to Purchase, and Willingness to Pay Premium: Organic label and Environmental Concerns as Moderating Variables
Authors:   The Tourism Sciences Society Of Korea, Lee Sin-Ae , Hwang Jo-Hye
Published: July 2021

The foods that consumers do not purchase will lead to food waste and environmental problems. Due to COVID-19, consumers have become highly interested in the environment and this connects to an eco-friendly attitude. Thus, this study aimed to identify the relationship between authenticity, perceived quality, purchase intention, willingness to pay premium prices, organic labels, and environmental concerns of ugly food appearance for sustainable consumption. Apple was selected to represent the visually unappealing (ugly) food and the study was divided into normal and defective type of apples. The results showed that, when there is a defect of the food's appearance, the consumers’ buying habits demonstrated a lower belief in authenticity, perceived quality, purchase intention, and willingness to pay a premium price. However, consumers’ responses changed positively when organic labels were represented. Additionally, the authenticity and perceived quality affected purchase intention and willingness to pay a premium. Finally, environmental concerns were divided into three groups to verify the moderating effect of the relationship between food appearance and consumer response, and there was a significant interaction effect on perceived quality and purchase intention. This study expanded the scope of ugly food research on the subject of defects and confirmed that authenticity and organic labels can be used as variables to promote sustainable consumption. The study also offers valuable insights for food marketers to understand a willingness of environmentally conscious consumers to pay premium prices, thus increasing sales in the future.
The Effect of Salinity and Nutrient Load on the Ecosystems of Selected Lakes in the South of Siberia
Authors: Zadereev Egor S.
Published: July 2021

Salinity largely determines the species diversity and structure of the food web in lake ecosystems. Many studies have been focused on the salinity tolerance of various plankton species. There are fewer studies investigating the modifications in the food web interactions under the effect of salinity. An appropriate system for such studies is closely located lakes of different salinity. We took samples during the summer stratification and analyzed the physicochemical and biological characteristics of 20 lakes (salinity 0.1-35 g/l) in southern Siberia in order to provide general description of this system and to test a number of hypotheses about the effect of salinity on the structure of the food web. The analysis revealed two key factors structuring ecosystems of the studied lakes. The species composition of zooplankton was determined by salinity, with a decrease in the number of species and the transformation of the community from a diverse community of zooplankton (salinity up to 3 g/l) to the dominance of large daphnia (3-8 g/l), copepods (> 8 g/l), small cladocerans and rotifers (20-30 g/l), and Artemia (> 30 g/l). The top predator (fish) was eliminated at salinity above 10 g/l. The biomass of zooplankton did not depend on salinity, but significantly increased in lakes with an increased nutrient load. The nutrient load also had a significant effect on the concentration of total phosphorus, turbidity and transparency of water, and the concentration of chlorophyll “a”. Thus, we recorded the structuring effect of the nutrient load (bottom-up control) on the biomass of the trophic levels and the parameters of water transparency, while salinity transformed the trophic chain from the top, leading to the disappearance of fish and a change in the dominant species of zooplankton. At the same time, salinity did not affect the biomass of the trophic levels. In order to detect top-down effects in the ecosystems of saline lakes, it is necessary to perform a comparative analysis of the seasonal dynamics of ecosystems of lakes with different salinity
Bottom Communities and Abiotic Factors: Analysis of Statistical Relationship Using the Instability Index and Virtual Species Distribution
Authors: Zinchenko Tatiana D. , Shitikov Vladimir K. , Golovatyuk Larisa V.
Published: July 2021

Statistical procedures for quantifying the relationships between the community structure and abiotic variables start with selecting a minimum set of uncorrelated environmental factors that determine the ecological conditions essential for each of the species. This is especially important when constructing models of spatial distribution of species which are key to ecology of communities and conservation of nature. The aim of the study is to explore whether some applications of information theory can be used to rank environmental factors with respect to their contribution to the formation of the ecological structure of aquatic communities. We consider the applicability of the instability index, which is a special case of the Kullback-Leibler entropy divergence and reflects the information gain from the displacement of a particular realization of a random variable relative to its mean value. Using of instability indices allows to reduce multidimensional data sets on species structure of communities and abiotic factors to lower dimension sets of commensurate standardized variables and to explore the relationships between the latter. The initial data we used were the results of the long-term (1990–2019) hydrobiological survey of benthic communities in small and medium-sized rivers in the Middle and Lower Volga regions. We consider the indices of instability calculated for each of 147 taxa of macrozoobenthos and 8 geophysical and hydrochemical indicators. Based on these data, we constructed random forest regression models and calculated potential weights of environmental factors that determine ecological preferences of species. The most significant explanatory variables were used to construct distribution maps of «virtual species», which were compared with the corresponding empirical data. A habitat suitability map of chironomids (Diptera, Chironomidae), the Prodiamesinae subfamily, is presented. Instability indices can be effectively used for exploratory analysis of various ecosystems, e. g. ranking habitats according to the degree of environmental instability and / or species associations, selecting the most informative abiotic variables that determine the population density of the taxa, etc.
Measuring Alloxanthin as a Proxy Approach in a Study of Trophic Relationships between Zooplankton and Cryptophyte Algae in Lake Shira
Authors: Barkhatov Yuri V.
Published: July 2021

Cryptophyte algae are an important trophic link in many aquatic ecosystems, but they remain insufficiently studied in terms of trophic interactions with other components of ecosystems. They are better quality food than most other algae and, therefore, can be subject to selective grazing by zooplankton; thus, direct measurements of the dynamics of their concentration in lakes may give very low productivity indicators. One way to assess the consumption of cryptophyte algae by zooplankton is to determine the content of alloxanthin, a carotenoid specific for cryptophyte algae, in zooplankton. The present study investigated the alloxanthin content of sedimentary silts, sedimentation traps, and zooplankton of Lake Shira using high performance liquid chromatography. A significant correlation was found between the abundance of some zooplankton species capable of consuming cryptophyte algae and the flux of precipitated alloxanthin recorded in sedimentation traps. Analysis of zooplankton samples (the largest contribution to the biomass of which was made by the copepod Arctodiaptomus salinus (Daday, 1885)) for the content of carotenoids during the spring-summer season showed the presence of alloxanthin amounts reaching 80 μg/g, which decreased by the end of the season, and that correlated with the biomass of cryptophyte algae in the lake. Carotenoids associated with other groups of algae were observed in considerably smaller amounts. Thus, the copepod A. salinus exhibits high selective consumption of cryptophyte algae, which may serve as a confirmation of a close trophic relationship between them
Intergenerational Income Mobility in Turkey
Authors: DUMAN Erkan
Published: July 2021

This study presents a thorough review of the literature on intergenerational income mobility with a focus on the issues regarding consistent estimation of mobility correlations. In the light of the discussions, the intergenerational income association in Turkey is analyzed using OLS and IV estimation strategies. The sample is extracted from Household Budget Surveys and includes father-son and father-daughter pairs with either non-zero wages or non-zero earnings living in the same household in any of the years between 2003 and 2011. OLS and IV estimation strategies are shown to bound the true population mobility correlation from below and above; hence, resulting in a consistent interval estimate of intergenerational mobility. The true mobility correlations in the population are estimated to be in the range of (0.10, 0.51) for sons and (0.17, 1.00) for daughters. The large mobility correlations may call for government intervention to break the harmful income link across generations.
COVID-19 Pandemi Sürecinin Kargo Sektörü Çalışanlarının İşe Yönelik Tutumlarına Etkisi: PTT Örneği
Authors: DÖNMEZ TOPÇUOĞLU Derin , GENÇ Emine
Published: July 2021

2019 yılının Aralık ayında Çin’in Wuhan eyaletinde ortaya çıkan ve daha sonra tüm dünyaya yayılan COVID-19 olarak bilinen koronavirüsle bütün dünyada sağlık, ekonomi, iş yaşamı, sosyal yaşam, tüketici davranışları gibi birçok alan etkilenmiştir. Salgın sürecinde artan e-ticaret eğilimiyle ve değişen tüketici davranışlarıyla kargo hizmeti veren kurumların iş yükü artmıştır. Bu bağlamda lojistik alanının önemli bir paydaşı olan kargo çalışanlarının pandemi sürecinden nasıl etkilendikleri bu çalışmanın ana konusunu oluşturmaktadır. Nitel ve nicel araştırma yöntemlerinin birlikte kullanıldığı çalışmada pandemi sürecinin lojistik faaliyetlere etkisi öncelikli olarak PTT kargo teslimat sayılarının karşılaştırılması ile ortaya konulmaya çalışılmıştır. Daha sonra Bartın İli Merkez ilçesinde görev yapmakta olan 22 PTT dağıtıcısı ile yarı yapılandırılmış mülakat tekniği kullanılarak görüşülmüştür. Araştırma sonucunda kargo teslimatlarında pandemi öncesi döneme oranla %26’lık bir artış olduğu, artan iş yükünün çalışanların motivasyonunu ve iş tatminini olumsuz yönde etkilediği ortaya koyulmuştur.
Sürdürülebilir Kalkınma Amaçları Bağlamında Kurumsal Sosyal Sorumluluk Uygulamaları: Türkiye’de Mevcut Durum ve Eğilimler
Authors: TİLTAY Muhammet Ali , ÖZ Murat , TEPE Mustafa Enes
Published: July 2021

Bu çalışmada Türkiye Kurumsal Sosyal Sorumluluk Derneği (TKSSD), Türkiye İşveren Sendikaları Konfederasyonu (TİSK), Sürdürülebilirlik Akademisi tarafından KSS faaliyetleri ödüllendirilen ve 2018–2020 dönemi BİST Sürdürülebilirlik Endeksi’nde yer alan işletmelerin internet sitelerinde yer alan KSS projeleri etik teoriler kapsamında yer alan sürdürülebilir kalkınma yaklaşımı bağlamında incelenmiştir. 126 işletme tarafından gerçekleştirilen 520 KSS faaliyeti analiz edilmiştir. Çalışmada amaçlı örneklem tekniklerinden ölçüt örneklem kullanılmıştır. İşletmelerin internet sitelerinde yayımladıkları KSS projeleri nitel ve nicel içerik analizine tabi tutulmuştur. Analiz edilen KSS faaliyetleri pazarlama ve kurumsal sosyal girişimler (Kotler vd., 2012) ile Birleşmiş Milletler Sürdürülebilir Kalkınma Amaçları (SKA) indeksi bağlamında sınıflandırılmıştır. Çalışmanın sonuçlarına göre, pazarlama ve kurumsal sosyal girişimler bağlamında analiz edilen KSS projelerinin çoğunluğu (%67) kurumsal odaklı girişimler kapsamındadır. Küresel amaçlar bağlamında ise her dört projeden üçü eşitsizliklerin azaltılması, nitelikli eğitim, karasal yaşam, sağlıklı ve kaliteli yaşam ve toplumsal cinsiyet eşitliği amaçlarına yöneliktir. Ayrıca, analiz edilen işletmelerin %41'i imalat sektöründe yer alırken, %65'inin menşei ülkesi Türkiye'dir.
Evolução Econômica do Setor de Serviços no Estado de Rondônia: uma análise do período de 2009 a 2015 ## Economic Evolution of the Services Sector in the State of Rondônia: an analysis of the period from 2009 to 2015
Authors: Bruno Ricardo Ferreira , Moraes Marcela Barbosa de , Oliveira Edson Aparecida Araujo Querido
Published: July 2021

Diante do atual momento de crise econômica brasileira, nota-se a importância do setor de serviços principalmente na geração de emprego e renda. Diante disto, esta pesquisa tem como objetivo geral investigar a evolução econômica do setor de serviços no estado de Rondônia no período de 2009 a 2015. Para tanto, foi utilizado como procedimento metodológico uma abordagem quantitativa por meio da coleta de documentos com base na Pesquisa Anual de Serviços (PAS) e, como o procedimento de análise foi utilizado a estatística descritiva. Os resultados demonstraram que o setor de serviços contribuiu significativamente na criação de empresas com um crescimento de 32%. Com relação à geração de renda, o crescimento para o estado de Rondônia foi de 110%, enquanto o número de pessoas ocupadas cresceu 20% no período pesquisado. Por fim, conclui-se que o setor de serviços do estado de Rondônia contribuiu de forma significativa para a evolução da geração de renda, número de pessoas ocupadas e aumento da quantidade de empresas. ABSTRACTIn today's time of Brazilian economic crisis, there is the importance of the service sector mainly in the generation of employment and income. In view of this, this research has as general purpose to investigate the economic evolution of the services sector in the state of Rondônia in the period from 2009 to 2015. For this, a quantitative approach was used as methodological procedure through the collection of documents based on the Annual Survey of Services (PAS) and, as the analysis procedure was used the descriptive statistics. The results showed that the services sector contributed significantly to the creation of companies with growth of 32%. With regard to income generation, growth for the state of Rondônia was 110%, while the number of employed persons increased by 20% in the period surveyed. Finally, it can be concluded that the service sector of the state of Rondônia contributed significantly to the evolution of income generation, number of employed persons and increase in the number of companies.
Economia Circular em Negócios de Segunda Mão ## Circular Economy in Second-Hand Business
Authors: Pansera Samara Picco , Comin Lidiane Cássia , Julkovski Dulcimar José
Published: July 2021

A Economia Circular promove práticas de consumo sustentável no setor de vestuário e produtos de segunda-mão, proporcionando reduzir os poluentes e garantir durabilidade dos componentes sem a necessidade de retirar matéria-prima da natureza. As plataformas online podem ser aliadas deste modelo de negócio, pois proporcionam acesso rápido e amplo a esses produtos. O objetivo deste estudo é analisar como os consumidores identificam e percebem as práticas de consumo de produtos de segunda mão, a partir da concepção do modelo de negócios circulares. Foi realizada uma pesquisa com aplicação de questionário eletrônico. Os resultados demonstram que existem práticas de consumo seguindo o modelo circular, mesmo que o conceito se encontre ainda implícito aos negócios de produtos de segunda mão. A preocupação dos indivíduos quanto ao impacto que o consumo exacerbado de produtos pode causar ao meio ambiente e a sustentabilidade do ecossistema é evidenciada, bem como a percepção da busca por meios de consumo que não agridam esse ecossistema. No entanto, essa percepção pelo propósito central do modelo de negócios circulares ainda não está presente de forma consciente quanto aos benefícios que a adoção do modelo de negócios circular pode ofertar, tanto para o meio ambiente, quanto para a sociedade como um todo. ABSTRACTThe Circular Economy promotes sustainable consumption practices in the clothing and second-hand products sector, provides a reduction of the pollutants and ensures component durability without the need to remove raw materials from nature. Online platforms can be associated with this type of business, as they provide quick and wide access to these products. The purpose of this study is to analyze how consumers identify and perceive practices of second-hand products consumption, based on the design of the circular business model. A survey was conducted using an electronic questionnaire. The results demonstrate the existence of consumption practices following the circular model, even though the concept is still implicit to the business of second-hand products. The concern of the individuals about the impact that the excessive consumption of products can cause to the environment and ecosystem sustainability is evidenced, as well as the perception of the pursuit for means of consumption that do not harm this ecosystem. However, this perception for the main purpose of the circular business model is, yet, not consciously present as to the benefits that the adoption of a circular business model can offer, both for the environment and for society as a whole.
Factors Influencing Customer Satisfaction in Online Shopping
Authors: Bahari Norzalizah , A. Samad Nor Syafiqah , Abu Yaziz@Mohamad Mohd Fathi , Mat Yunoh Muhammad Naqib , Rosli Nur Amalis
Published: July 2021

The study aims to determine the factors influencing customer satisfaction in online shopping among Malaysian youth. Online shopping is increasingly popular among Malaysians, including teenagers, due to its time-saving, convenience and availability anywhere and anytime. As online technology is still new in Malaysia, online sellers find it challenging to retain online buyers. The study adopted a survey through a quantitative approach by distributing questionnaires among the youth in Malaysia. The findings indicated that product quality, security, and shipping significantly affect customer satisfaction in online shopping. Furthermore, the study provides recommendations for online sellers and policymakers in enhancing the strength of online platform as the best transaction for customers
The Complementary Exponentiated Lomax-Poisson Distribution with Applications to Bladder Cancer and Failure Data
Authors: Kumar Devendra , Nassar Mazen , Z. Afify Ahmed , Dey Sanku
Published: July 2021

A new continuous four-parameter lifetime distribution is introduced by compounding the distribution of the maximum of a sequence of an independently identically exponentiated Lomax distributed random variables and zero truncated Poisson random variable, defined as the complementary exponentiated Lomax Poisson (CELP) distribution. The new distribution which exhibits decreasing and upside down bathtub shaped density while the distribution has the ability to model lifetime data with decreasing, increasing and upside-down bathtub shaped failure rates. The new distribution has a number of well-known lifetime special sub-models, such as Lomax-zero truncated Poisson distribution, exponentiated Pareto-zero truncated Poisson distribution and Pareto- zero truncated Poisson distribution. A comprehensive account of the mathematical and statistical properties of the new distribution is presented. The model parameters are obtained by the methods of maximum likelihood, least squares, weighted least squares, percentiles, maximum product of spacing and Cram\'er-von-Mises and compared them using Monte Carlo simulation study. We illustrate the performance of the proposed distribution by means of two real data sets and both the data sets show the new distribution is more appropriate as compared to the transmuted Lomax, beta exponentiated Lomax, McDonald Lomax, Kumaraswamy Lomax, Weibull Lomax, Burr X Lomax and Lomax distributions.
Aflatoxin content and health risks associated with consumption of some herbal products sold in Kampala, Uganda
Authors: Onen Patrick , Watmon James , Omara Timothy , Ocira Daniel
Published: July 2021

Persuasive adverts and exaggeration of health benefits from consumption of herbal products as well as the mental picture of ‘natural’ is ‘safe’ has boosted traditional medicine use in Uganda. However, herbal products may be unsafe due to the possibility of their contamination with mycotoxins. In this study, we quantified the levels of aflatoxins (B1, B2, G1 and G2) in Real Koff product, Eddagala ly’e kifuba n’e senyiga, Omusujja, Cough mixture and Fever herbal products sold in Kampala, Uganda using high performance liquid chromatography-tandem mass spectrometry. The associated consumption health risks were assessed using the hazard index method. Only aflatoxin B1 was detected in 60% of the samples, with 40% of these surpassing WHO guidelines of ≤ 5 µg/kg. The hazard indices were all less than 1, implying that Ugandans who heavily rely on the herbal products are exposed to aflatoxins at sublethal doses which may lead to chronic effects in the long run. Studies using a larger sample size should assess whether the current observation is a routine occurrence or a sporadic event.
Chemistry and technology of roasting and extracting different types of coffees with preservation of taste and aromas
Authors: Kurta Sergiy , Yakubiak Mаria , Khatsevich Olga
Published: July 2021

The article considers the chemistry and technology of the methods of roasting and extracting different types of coffees, Arabica and Robusta. Parameters and equipment to improve roasting in microwave ovens and distillation of coffee with water-alcohol vapors demonstrate that the weight loss of green coffee beans has decreased from 18-20% to 12-15%. Mass spectroscopic analysis of extracts of coffee substances with water vapor and alcohol identified 36 substances, 14 of them being the main substances that create a unique bouquet - the taste and aroma of coffee. We have experimentally demonstrated that aqueous distillates of coffee extracts accelerate 1.5-2.5 times the metabolism of ethyl alcohol in the human body to the acceptable concentrations of 0.2 ‰ per ppm.
Relationship of the content of vitamin D and melatonin in blood serum and pineal gland calcifications in patients with malignant bone tumors
Authors: Drobotun Oleg , Kolotilov Mykola , Safonov Mykola
Published: July 2021

The aim of the study was to investigate the relationship between the vitamin D content, melatonin and the characteristics of pineal gland calcifications in patients with malignant tumors of the bones of the lower extremities. Vitamin D deficiency and pineal gland calcifications are observed in almost 100 % of patients with malignant tumors of the lower extremities’ bones. The high heterogeneity of calcifications and its dynamics during the treatment of patients may indicate the processes of their litholysis and dissolution.
Characteristics of Maternal Attitude linked to Values-Based
Authors: Novikova M.A. , Rean A.A.
Published: July 2021

Objective. Finding out the characteristics of maternal attitude towards adolescents in relation to their gender, family composition and place of living, as well as to value orientations of the adolescents.
Background. Taking in account the ongoing discussions on the upbringing role of the family and growing interest to the phenomena of modern childhood and parenting revealing of the main aspects of child-parent relations and their influence on value orientations of adolescents seems to be important.
Study design. Maternal attitude (within its measurements of emotional involvement and overprotection) in relation to value orientations of modern adolescents was investigated. Main statistical procedures used were exploratory factor analysis and correlation analysis.
Participants. The survey was undertaken on the sample of 7384 adolescents (mean age 16,3, 42% male) living in several Federal Regions of Russia.
Measurements. Russian-language version of PBI (Parental Bonding Inventory) questionnaire, author’s scale “Proverbs”.
Results. According to the obtained results the evaluation given to maternal attitude by the adolescents is significantly related to their gender, family structure and place of living. Higher estimates of maternal acceptance are positively correlated with adolescents’ values-based orientations linked to justice, support and diligence. Contrarily, the subjects who described their mothers like overprotecting were more inclined to the mindset based on self-adjustment, gaining personal beneficiaries and strong self-centration.
Conclusions. There is a significant relation between maternal attitude and value orientations of modern adolescents.
Adaptation of the Revised Olweus Bully/Victim Questionnaire — Russian version
Authors: Bushina E.V. , Muminova A.M.
Published: July 2021

Objective of the study is to adapt of an English-language methodology that reveal the level of ag-gression and victimization in a school bullying situation on a Russian-language sample. Background. Bullying is one of the most serious problems of interpersonal relations at school. Results of previous research suggest negative consequences of bullying for its participants. According to statistics, every third child in Russia is subjected to bullying at school. Nevertheless, the problem of bullying remains scarcely explored, hence there is a problem in the lack of reliable methods for measuring that construct. Study design. The procedure for adapting the English-language Revised Olweus Bully/Victim Questionnaire methodology consisted of direct and reverse translation, conducting cognitive interviews and surveys, as well as statistical processing stages. Participants. The sample included 833 respondents from 10 to 18 years old, with an average age of 16. 57% of them (473 respondents) are male, and 43% (360 respondents) are female. Methods. Сonfirmatory factor analyses and analysis of internal consistency were conducted for data analysis. The R software was used for data processing. Results. Good performance of confirmatory analysis and analysis of internal consistency confirm the correspondence of the structure of the adapted methodology to the original one and indicate the presence of reliability-consistency. The adapted version of the questionnaire includes 2 scales: victimization and aggression, each of which includes 8 statements, which are evaluated on a 5 — point scale. Conclusion. The adapted method is reliable and valid and can be used for both research and applied purposes in Russian schools.