bluuebunny/crossref_metadata_2025 huggingface dataset:
The impact of servicescape on consumer behavioral intentions in high-end rural homestays: A study on the mediating role of perceived value
Authors: Salehi Nader
Published: May 2024

Servicescape plays an extremely important role in demonstrating experience in service delivery and the ability to bring satisfaction to customers. Servicescape is perhaps the most widely used term to refer to the impact of tangible and intangible signs on consumers. Rural homestays urgently need to transform and upgrade from their traditional service style to the latest service model which can provide a new balance between standardized services and customized experience. According to the last research, the perceived value components and how they affect the servicespace components have not been taken into consideration in studies on high-level rural homestays. The purpose of this study is to identify the mediation effect of perceived value on the effect of servicecape on consumer behavioral intentions in high-end rural homestays in China. The statistical population of this study consists of consumers living in high-level rural homestay in the Lu’an city, China. 350 surveys questionnaires were provided to consumers, and 300 questionnaires were collected. The collected questionnaires were subjected to descriptive statistical analysis, reliability testing, and hypothesis testing using Excel, SPSS, and Smart-PLS software. The idea of perceived value as a mediator in the impact of servicecape on consumer behavior intentions is confirmed. These findings indicated that the servicescape and its components, such as ambience, equipment, hygiene, design, and space, directly influence and promote the level of consumer behavior intentions, as well as impact consumer behavior intentions via the mediation effect of perceived value. Therefore, agencies and owners of high-end rural houses should focus on cultural, social, emotional, and money values in order to promote staying in rural houses.
impact of an educational intervention on fertility awareness of healthcare professionals
Authors: Petročnik Petra , Prosen Mirko , Žvanut Boštjan , Pucer Patrik , Mivšek Polona
Published: May 2024

Introduction: With couples' increasing postponement of pregnancy to later in life and the associated rising infertility rates, healthcare professionals need to be proactive in  counselling on the risk factors affecting reproduction. To do so, they need specific counselling skills and evidence-based information. The aim of this study was to assess and compare participants' knowledge of fertility issues before and after an educational intervention on preconception health care.Methods: A cross-sectional observational study was conducted, using the same questionnaire to assess the pre- and post-intervention status. The questionnaire was developed on the basis of a literature review on infertility risk factors. The survey was conducted in a conference  setting. Participation in the survey was voluntary and confidentiality was assured to all participants (midwives, nurses and healthcare students). The differences in participants' pre- and post-intervention knowledge were calculated using the Wilcoxon signed rank test.Results: The results of our study show an improvement in participants' overall knowledge on infertility risk factors. These improvements were statistically significant in the sections of 'Age and Fertility' and 'Environmental Hazards', while in the sections 'Pre-existing Medical Conditions' and 'Lifestyle Factors Affecting Fertility', participants already possessed comprehensive knowledge prior to the educational intervention.Discussion and conclusion: Health professionals can  improve their knowledge on preconception health through continuous education. Further studies need to test the long-term effects of different educational approaches.
Financial literacy, network competency, market orientation and financial performance: A study from Bandung SMEs
Authors: Mihardjo Raynald Phoebus , Ningtyas Mega Noerman
Published: May 2024

Indonesia SMEs have contributed 61.97% to GDP or Rp. 8,573.89 trillion, and they can absorb almost 97% of the workforce. However, several problems arise and become limitations for SMEs, such as limited capital and limited marketing ability and weak business management capabilities. For capital limitations, it can be solved by applying for credit to external parties such as banks and venture capital, but SMEs must meet the bank requirements. For marketing limitations, it can be pursued by maximizing the ability of SMES actors in network competence and market orientation. Therefore, this research was conducted to examine the financial literacy, network competence, and market orientation to the financial performance of SMEs. We collected data by an online questionnaire on 197 SMEs in Bandung. We use SEM PLS to analyze the data. Our results indicated that financial literacy, network competence, and market orientation had a positive and significant impact on the SMEs financial performance. That means that the ability to understand financial concepts, the ability to establish good relationships or networks with external parties, and the ability to sense markets and customer relations help SMEs to implement their business strategies properly. So that they will have an impact on increasing financial performance.
The moderating role of readiness for change on the effect of transformational leadership and compensation satisfaction on employee performance: Evidence from post-acquisition companies
Authors: Ratnawati Intan , Sugiharti Rr. Retno
Published: May 2024

This paper aims to analyze how transformational leadership and compensation satisfaction determine employee performance in post-acquisition companies by proposing readiness for change as a mediating variable. Our samples are 400 employees from four post-acquisition companies which underwent acquisition in 2014. The findings of this study show that the direct effect between transformational leadership and employee performance has a higher value than the indirect effect through the variable readiness for change. Likewise, the direct effect between compensation satisfaction and employee performance has a higher value than the indirect effect through readiness to change. The statement before shows that the existence of readiness to change is essential. Still, the dynamic changes require employees to adapt quickly to new circumstances, ready or not.
Financial inclusion and mutual funds investment decision
Authors: Mutamimah Mutamimah , Saputri Pungky Lela , Indriastuti Maya
Published: May 2024

This study analyses mutual fund investment decisions based on financial inclusion. Multiple regression analysis and the sobel test were used to analyse the data. The population in this study is all mutual fund investors in Central Java, Indonesia. Purposive sampling was used in the sampling method. The results show that financial literacy and financial technology have no effect on mutual fund investment decisions but have a positive influence on financial inclusion, while financial inclusion has a positive effect on mutual fund investment decisions. Thus, financial inclusion can mediate the influence of financial literacy and financial technology on mutual fund investment decisions
Kontribusi Nilai-Nilai Kearifan Lokal dalam Budaya Tradisi Macanan dan Kawin Cai Untuk Menguatkan Identitas Nasional Indonesia (Studi Kasus di Desa Adiraja Kabupaten Cilacap dan Desa Babakan Kabupaten Kuningan)
Authors: Sukmayadi Trisna , Suyitno Suyitno
Published: May 2024

AbstractNational identity is the identity of a nation that differentiates between one nation and another. Therefore, it is necessary to re-understand national identity which includes what constitutes the true identity of the Indonesian nation. This study aims to find the values of local wisdom in people's culture to strengthen national identity, using the type of case study research. The results showed that the Macanan and Kawin Cai traditions contained elements of local wisdom values, namely religious values (gratitude), caring, and obedience. Where these values contribute to strengthening national identity.Key words: culture, local wisdom, national identity
Change of Beauty Standards in Indonesian Society Through Beauty Product That Improve Lately
Authors: Saraharah Zona Dyota , Ningtyas Sulistya
Published: May 2024

Beauty products that continue to use the words whitening or brightening when selling their products to Indonesians even though most Indonesians have a variety of colors, not just white or bright. This research aims to explore people's views regarding beauty standards which are now starting to change in people's views, reflected in local beauty products promoted by brands that continue to improvise. The method used in the research is a constructive paradigm by interviewing several participants. The results of this research are the opening of the view that beauty cannot be made or set to a standard, especially as many local beauty products make products to suit Indonesian people's skin color. Awareness and openness of people's minds, especially young people, who know that social media is a means to be open to the uniqueness of each individual's beauty.
Preservasi dan Kurasi Digital dalam Arsip Seni Kontemporer : Sebuah Literatur Review
Authors: Dyaningsih Noviati Ayu , Pramudyo Gani Nur
Published: May 2024

Preservasi dan kurasi digital dalam arsip seni kontemporer merupakan tantangan yang kompleks di era digital. Penelitian ini menggunakan pendekatan kualitatif dengan mengkaji literatur secara mendalam mengenai preservasi digital dan kurasi digital dalam arsip seni kontemporer. Tujuan penelitian ini untuk menyelidiki praktik terkini, pendekatan, dan inovasi dalam preservasi dan kurasi digital dalam arsip seni kontemporer yang dilakukan untuk upaya menjaga integritas, aksesibilitas, dan keberlanjutan karya seni kontemporer dalam bentuk digital. Tantangan yang dihadapi dalam preservasi dan kurasi digital dalam arsip seni kontemporer, seperti perubahan teknologi, pemulihan karya seni yang terancam punah, dan perluasan hak cipta. Upaya standarisasi, kerangka kerja, dan adanya kebijakan yang diperlukan untuk memastikan keberhasilan preservasi dan kurasi digital dalam arsip seni kontemporer. Kesenjangan mengenai preservasi digital dan kurasi digital dalam arsip seni kontemporer, seperti pengembangan algoritma untuk mendukung pengawasan dan pemeliharaan karya seni digital, perlindungan privasi dan keamanan data, serta strategi pengarsipan dalam jangka panjang untuk memastikan keberlanjutan warisan seni kontemporer. Penelitian ini memberikan wawasan penting bagi kurator, ahli arsip, dan praktisi seni dalam memahami tantangan dan peluang dalam mempertahankan dan mengelola warisan digital dalam seni kontemporer dengan menggabungkan perspektif dari berbagai disiplin yang dapat mendorong kolaborasi dan inovasi dalam preservasi dan kurasi digital dalam arsip seni kontemporer di masa depan.
Nuclear Challenges of Neglected Lessons of Chornobyl
Authors: Gardashuk Tetiana
Published: May 2024

The article is dedicated to the analysis of new nuclear challenges resulting from Russia’s nuclear blackmail and attacks at civic nuclear facilities in Ukraine. It is shown that Russia’s actions concerning civic nuclear facilities correspond to the criteria of nuclear terrorism and demonstrate the violation of the internationally accepted principles of non-proliferation and nuclear taboo. This attitude to potentially dangerous objects and behavior is rooted in the non-acceptance of the post-Chornobyl safety culture. For the Russian Federation, it is the exploitation of human fears of new nuclear disasters and radiation pollution.
European and global communities in close cooperation with the Ukrainian authority, scientists, and civic society urgently need to work out efficient instruments to translate and convert nuclear fear and concern into efficient actions for the enforcement of international legislation in the sphere of nuclear safety and terrorism prevention and the empowerment of international institutions and organizations. 
Translated article was published for Czech readers in Ekolist (with small changes): https://ekolist.cz/cz/publicistika/eseje/jaderne-vyzvy-a-ignorovani-zkusenosti-z-cernobylu
The Challenges and Strengths to Ensure the Well-being and Safety of Autistic Children to Meet their Distinct Requirements and Create a Safe and Supportive Environment
Authors: Akter Masuma
Published: May 2024

This study seeks to broaden our understanding of the challenges and strengths essential for effectively supporting children with autism spectrum disorder (ASD), contributing valuable insights to enhance our approach in addressing their unique needs. A child with special needs may have been born with cognitive disability, critical physical condition, abnormal syndrome, or chronic psychological illness (Autism, ADHD, Down syndrome, Cerebral Palsy, Epilepsy, etc.). He or she may have problems with behavior, communication, or social activities. We always need to keep in mind that each child is unique, so we need to observe and listen to their individual preferences and needs. The study has explored at the prevalence of ASD among children aged between 07-15 years. Methodology: A comprehensive investigation unfolded through both a Case Study and a cross-sectional study, involving 200 children within the age range of 7-15 years. Objective: This study aims to uncover the unique challenges experienced by autistic children and proposes solutions to create a secure and supportive environment on basis of their needs
Eigenvalues of complex unit gain graphs and gain regularity
Authors: Brunetti Maurizio
Published: May 2024

A complex unit gain graph (or

T

{\mathbb{T}}

-gain graph)

Γ
=

(

G
,
γ

)

\Gamma =\left(G,\gamma )

is a gain graph with gains in

T

{\mathbb{T}}

, the multiplicative group of complex units. The

T

{\mathbb{T}}

-outgain in

Γ

\Gamma

of a vertex

v
∈
G

v\in G

is the sum of the gains of all the arcs originating in

v

v

. A

T

{\mathbb{T}}

-gain graph is said to be an

a

a

-

T

{\mathbb{T}}

-regular graph if the

T

{\mathbb{T}}

-outgain of each of its vertices is equal to

a

a

. In this article, it is proved that

a

a

-

T

{\mathbb{T}}

-regular graphs exist for every

a
∈
R

a\in {\mathbb{R}}

. This, in particular, means that every real number can be a

T

{\mathbb{T}}

-gain graph eigenvalue. Moreover, denoted by

Ω

(

a

)

\Omega \left(a)

the class of connected

T

{\mathbb{T}}

-gain graphs whose largest eigenvalue is the real number

a

a

, it is shown that

Ω

(

a

)

\Omega \left(a)

is nonempty if and only if

a

a

belongs to

{

0

}

∪

[

1
,
+
∞

)

\left\{0\right\}\cup \left[1,+\infty )

. In order to achieve these results, non-complete extended

p

p

-sums and suitably defined joins of

T

{\mathbb{T}}

-gain graphs are considered.
Stressz és szorongás a középiskolában: Fiziológiás és pszichológiai mutatók összefüggéseinek vizsgálata serdülők körében
Authors:   ,   PTE ETK Egészségtudományi Doktori Iskola, Stromájer Gábor Pál
Published: May 2024

A mentális és pszichológiai zavarok komoly egészségügyi problémákat jelentenek világszerte. Az iskolai szorongás befolyásolhatja az iskolai teljesítményt, a társas kapcsolatokat és a családi életet. Célkitűzés: Célunk az volt, hogy megértsük a szorongási szinteket és a hozzá kapcsolódó tényezőket középiskolás diákok körében, és összehasonlítsuk a pszichológiai tesztekkel mért szorongási eredményeket a biológiai mintavétel során kapott kortizol szintjeivel. Módszer: Longitudinális follow-up kutatásunkba 125 egyént vontunk be 2019 májusában. Az adatgyűjtés során validált mérési eszközöket használtunk, ideértve az Állapot–Vonás Szorongás Kérdőívet, a Tiszta Kommunikáció Skálát, az Észlelt Szociális Támogatás Skálát és a kapcsolódó HBSC kérdéseket. Objektív adatként hajmintákat gyűjtöttünk a kortizol szint mérésére. Eredmények: Az iskolai év végén a pszichológiai tesztekkel mért szorongási szintek jelentősen magasabbak voltak (p< 0,001) a következő iskolai év kezdetén mért szorongási szintekhez képest. A szorongási szintek magasabbak voltak a lányok körében, emellett az iskola típusától és a szülői elvárásoktól függtek. Mind az állapot, mind a vonás szorongás erős korrelációt mutatott a pszichoszomatikus tünetekkel (p < 0,001) és az iskolai elvárásokból fakadó szorongással (p < 0,05). A kortizol szint változásai nem követték a pszichológiai tesztek változásait. A kortizol szint növekedett (p < 0,01) a második mintában.
The Regional Firm Density and the Growth of Firms in the Portuguese Textile and Clothing Industry
Authors: Vaz Rolando
Published: May 2024

This paper focuses on the relationship between the regional firm density and the growth of firms in the Portuguese textile and clothing industry to investigate how their geographic clustering influences said growth. Despite the concentration of this industry in the Northern region of Portugal in only four poles, our results show that the location of firms in the cluster is not relevant for growth when the whole industry is considered. However, disaggregate analysis shows that the clothing industry does exhibit both location externalities and cross-location effect, while textile manufacture exhibits neither. In addition, our empirical evidence reveals that the growth of firms located in the cluster is positively correlated with external finance. This result suggests that location becomes a solvency signal for firms, and, specifically, this might help to explain why textile manufacturers firms are located in the cluster. These findings are relevant for entrepreneurs and Portuguese policymakers, as it jeopardizes the optimal allocation of scarce resources in the Portuguese textile cluster.
Overlap syndrome of ankylosing spondylitis and mixed connective tissue disease in female
Authors: Nallasivan S  , Rajendran R  , Mariappan S  , Palaninathan P  , Yadav K  , Sundara S
Published: May 2024

Ankylosing spondylitis is a chronic inflammatory disease affecting the young men and less commonly women with a spectrum of manifestations including uveitis, arthritis, sacroiliitis, colitis and psoriasis (spondyloarthropathy). Mixed connective tissue disorder (MCTD) is a complex and heterogenous autoimmune disease that affects women in their childbearing age. It is characterized by circulating autoimmune antibodies that deposit in tissues, resulting in inflammatory response, causing irreparable tissue damage. Overlap and co-existence of these diseases are uncommon, as per literature evidence. The present study has reported the case of a 35-year-old female, who had HLA B27-positive spondyloarthropathy for 10 years and had been receiving sulfasalazine, and had neck swelling for 4 months. Screening conducted for TB in view of fever, weight loss and neck nodes, had reported negative results. She was found to have Reynaud’s disease, arthritis, bilateral cervical lymphadenopathy and elevated autoantibody titers including ANA, U1SM/RNP and Coombs-positive hemolysis. The diagnosis was concluded as MCTD and she had responded well to the treatment. As per the available literature, this could be touted as the first case study of a female patient with ankylosing spondylitis and MCTD.
Location selection for a lumber drying facility via a hybrid Pythagorean fuzzy decision-making approach
Authors: Singer Hilal
Published: May 2024

The strategic selection of facility locations plays a critical role in optimizing operational efficiency, reducing costs, and enhancing customer satisfaction, thereby contributing significantly to the success and competitiveness of businesses. In this study, an interval-valued Pythagorean fuzzy decision-making framework is proposed to select the best location for the lumber drying industry. A four-level hierarchical model is devised with four main criteria, 16 subcriteria, and five alternatives. The opinions of different experts are gathered to obtain input data. The weights of the criteria are calculated using the interval-valued Pythagorean fuzzy analytic hierarchy process (AHP) method. The interval-valued Pythagorean fuzzy weighted aggregated sum product assessment (WASPAS) method is employed to evaluate the alternative locations. A sensitivity analysis is conducted to support the validity of the model results. The study concludes by revealing the optimal location for the lumber drying industry in Turkey. This study presents its novelty by formulating the lumber drying facility location selection problem as a complex fuzzy multicriteria decision-making problem and integrating the Pythagorean fuzzy AHP and WASPAS methods to solve the problem.
On the mean square of the Lerch zeta-function with respect to the parameter
Authors: Laurinčikas Antanas
Published: May 2024

There is not abstract.
On the limits for distributions of additive functions
Authors: Mačiulis Algirdas , Šiaulys Jonas
Published: May 2024

There is not abstract.
On integer parts of some sequences
Authors: Stakėnas Vilius
Published: May 2024

There is not abstract.
Evaluation of open and distance learning appying possibilities for scoolchildren extracurricuium education
Authors: Kaklauskas Liudvikas
Published: May 2024

Distance learning is one of the new teaching ways that is used in Lithuania. Šiauliai Univer­sity has several correspondence courses for schoolchildren. Using some distance learning forms it is possible to make easer the communication between lecturers and schoolchildren. Speaking to ascertain the applying possibilities of this new teaching way, the research was carried out. The re­sults of questionnaire corroborated that the most of schoolchildren taking correspondence course at Siauliai University are ready to use new informational technologies.
Development of distance learning courses on statistics
Authors: Janilionis Vytautas
Published: May 2024

The problems of the development of web-based distance learning (DL) courses on Statistics are analysed in the paper. DL methods and technologies for the development and provision of DL courses on Statistics are reviewed. The Internet resources (electronic books, video, simulation, animation, text, interactive experiments, software package which provides routines for statistical analysis via the WWW) and application of DL course development software are analysed. The. experience of the developer of the first Lithuanian web-based course on Statistics ``Statistics and Data Analysis Software'' is presented in the paper.
Fragments of history of KPI mathematics departments
Authors: Pekarskas Vidmantas , Pekarskienė Aldona
Published: May 2024

History of Applied and General mathematics departments from foundation of Mathematics department in 1940 till its splitting into two departments in 1962 is analyzed in the article.
Combinatorics, statistics, probability calculus in the secondary school in Lithuania
Authors: Survila Pranas
Published: May 2024

The analysis of Lithuanian textbooks Qr combinatorics, statistics and elementary probability is presented. The methodological approach of the current teaching programme is discussed. The definitions of some notions are criticized and the alternatives suggested.
A resolution calculus for modal logic S4
Authors: Norgėla Stasys
Published: May 2024

There is not abstract.
Bootstrap methods in selection of the discriminant subspace
Authors: Jakimauskas Gintautas , Krikštolaitis Ričardas
Published: May 2024

There is not abstract.
Discrimination of CAR models
Authors: Šaltytė Jūratė
Published: May 2024

There is not abstract.
Competitive two person zero-sum game with linear increment function
Authors: Dranseikienė Jolanta , Sūdžiūtė Daina
Published: May 2024

We analyze the competition of two firms with increment function of the first firm c(x) = kx +1 an analogue to that in [1] with the increment c = 1.The optimal strategies X*, Y* and the value v of the game in explicit form are obtained, their parameters a, α, C0, C1 being the solutions of the equation system.The values of the game parameters for various k are presented in graphic form.
Computing permutation groups of error-correcting codes
Authors: Skersys Gintaras
Published: May 2024

There is not abstract.
The influence of Rhizobium tropici produced EPM biopolymer on green bush bean root and plant growth
Authors: Luo Huiting , Ying Yu Shirley Xuan , Zheng Youyou , Wang Laura , Fernandez Melany Ramos , Rafailovich Miriam , Simon Marcia , Walker Stephen , Gao Jay , Larson Steven
Published: May 2024

A Rhizobium tropici (R. tropici) derived biopolymer has been reported as an effective, biodegradable, additive to reduce erosion. In addition to directly modifying the mechanical properties of the soil, it was postulated that indirectly it enhanced vegetation, which in turn stabilized the soil through enhanced root infrastructure. We therefore chose to study its impact directly on Green Bush Bean plants, where its effect could be measured in the early stages of plant development, starting from germination of the seeds through the initial growth of leaves and shoots. EPM derived from R. tropici bacteria ATCC (strain) grown in two laboratories were tested with similar results, indicating a high degree of reproducibility. Watering Bush Bean seeds with EPM concentrations as low as 50 and 100 mg/L produced a small increase of the germination rate, from 87% to 93% for seeds grown for ten days in a moist environment. The seeds were then transplanted into potting soil and allowed to grow for another three weeks, during which they were watered daily with tap water or the EPM solutions. Continued watering with EPM after transplantation showed enhancement in both root and stem/leaf mass three weeks after transplantation into potting soil by 45% for the two EPM biopolymers. Root density was also higher by 29% to 71% for EPM1.The mass of the leaf and shoots also showed a significant enhancement over the control, but in this case favoring EPM2, consistent with plants preferring either root or leaf production.
Interactions between Cetaceans (suborder Odontoceti) and Artisanal Fishing in Brazil: an ethnoecological approach
Authors: Carvalho Breno , Antonio da Silva Souto Antonio da Silva Souto , Evaldo de Lira Azevedo Evaldo de Lira Azevedo
Published: May 2024

Studies based on the relationship between humans and the natural environment have been proven to be important tools for understanding the influence, knowledge, and perceptions associated with the web of interactions between humans, species and ecosystems. Here, we highlight the interactions between cetaceans and artisanal fishing. Thus, this study aimed to: a) compile studies that consider artisanal fishing and its interactions with small cetaceans in Brazil; b) understand research trends over the years; c) analyse the distribution of studies by country region; d) perform authorship and citation analyses; e) classify the interactions between cetaceans and artisanal fishing recorded by authors and f) identify dolphin species registered in the study. To achieve this, we reviewed the current status of national publications related to the interactions of cetaceans (suborder Odontoceti) with artisanal fishing in Brazil, focusing on ethnoecological studies. Seven databases were used to survey the studies. To classify the interactions, we adopted the categorization proposed by Freitas-Netto and adapted by Di Beneditto. Based on the data analysis, we registered 12 types of interactions, seven of which were grouped according to the descriptions proposed by Di Beneditto and five new categories were described based on the results of this study. The studies reported the interaction of 43.2% (n=16) of the 37 odontocete species reported to occur in Brazil, with emphasis on the species Sotalia guianensis, Tursiops truncatus, Pontoporia blainvillei, Inia geoffrensis and Sotalia fluviatilis. From our research it was possible to observe that ethnoecological studies allow us to answer important questions about the occurrence of species and aspects of fishing. Furthermore, we reinforce the importance of developing studies which focus on the knowledge of the existing relationships between cetaceans and traditional fishing methods, since studies on this topic can generate data that contribute to the establishment of mitigation strategies and the management of species and ecosystems.
Efecto del encalado en el cultivo de naranja valencia en la zona norte de Costa Rica
Authors: Molina Eloy , Rojas Alexander
Published: May 2024

Se evaluó el efecto del encalado en el rendimiento de naranja Valencia y en la fertilidad de un Ultisol de la Zona Norte de Costa Rica. Se utilizó 3 materiales de encalado: CaCO3 de granulometría gruesa; CaCO3 de granulometría fina; y una mezcla física de 85% de CaCO3 y 15% de óxido de magnesio, cada uno de ellos en dosis de 1, 2 y 3 t ha-1, y un testigo sin cal, en un diseño de Bloques Completos al Azar y 4 repeticiones. Se hicieron 4 cosechas de fruta entre 1994 y 1998, y 3 muestreos de suelo y tejido foliar (6, 12 y 24 meses después de aplicar la cal). La aplicación de cal tuvo un efecto significativo en la fertilidad del suelo; al aumentar la dosis se incrementó el contenido de Ca intercambiable, y se redujo la acidez del suelo y la saturación de acidez. La mezcla de CaCO3 + MgO aumentó significativamente el contenido de Mg intercambiable, siendo el efecto más marcado con la dosis de 3 t ha-1. La respuesta de la cal se presentó en forma lineal en los 4 años de cosecha evaluados, con un incremento en el rendimiento de fruta y sólidos solubles al elevarse la dosis. El tratamiento de 3 t ha-1 de cal presentó el rendimiento más alto con los 3 materiales evaluados en las 4 cosechas, lo que indica la posibilidad de obtener respuesta a una dosis mayor. No hubo diferencias significativas entre las 3 fuentes de cal en las variables de suelo y rendimiento, lo que indica que las variaciones en calidad química y física de los materiales no afectaron los resultados. Sin embargo, la mezcla CaCO3 + MgO presentó el valor más bajo de acidez, el más alto de Mg en el suelo y en las hojas, y los rendimientos más altos de fruta y sólidos solubles.
Microorganismos benéficos en el control de enfermedades en la producción de jengibre
Authors: Chavarría Marena , Uribe Lidieth , Bolaños Andrea
Published: May 2024

En Peñas Blanca, San Ramón de Alajuela, se evaluó la acción supresora de las cepas de Trichoderma viride 2C-PR, Bacillus subtilis 002R y Streptomyces griseus 001, en el combate de Fusarium solani, Rhizoctonia solani, Pseudomonas sp y Erwinia carotovora, en plantas de jengibre, en comparación con fungicidas y bactericidas usados por el agricultor. Las aplicaciones se realizaron cada 15 días durante un periodo de 9 meses y cada semana cuando se presentó algún foco de infección. La duración del trabajo fue de 11 meses (febrero-diciembre). Se evaluó la sobrevivencia de los patógenos y los biocontroladores, para lo cual se realizaron análisis microbiológicos a los 4 y 9 meses de edad de cultivo; se evaluó además producción. En términos generales, se observó una tendencia a la disminución del inóculo de los patógenos en el tratamiento biológico, en comparación con el tratamiento químico en ambos muestreos, a excepción de F. solani en el primer muestreo. Al final del ensayo se pudo determinar la presencia de la cepa de Trichoderma con poblaciones de 4,5x108 conidios g-1, Bacillus con 6,1x1010 UFC ml-1 y Streptomyces fue la cepa que menos persistió en el campo, con una poblacion 2x101 ml-1. El tratamiento con los biocontroladores presentó una producción significativamente mayor (82000 kg ha-1) que el tratamiento químico (48000 kg ha-1). Estos resultados demuestran que los biocontroladores son una alternativa de control contra los patógenos F. solani, R. solani, Pseudomonas sp, E. carotovora.
The effect of predators on the abundance of the Macadamia Nutborer (Ecdytolopha torticornis)
Authors: Blanco-Metzler Helga , Watt Allan D. , Cosens Derek
Published: May 2024

Los depredadores juegan un papel fundamental en los programas de manejo integrado de plagas; sin embargo, por lo general, son poco utilizados debido a la falta de información sobre su efecto en las poblaciones plaga. En este estudio, se cuantificó la mortalidad de larvas y pupas de Ecdytolopha torticornis, causada por depredadores durante el período desde la caída de la nuez hasta la cosecha, en una plantación de macadamia en Costa Rica. Se encontró que los depredadores redujeron significativamente la abundancia de larvas del barrenador de la nuez, y que la hormiga de fuego, Solenopsis geminata F., fue el depredador más importante.
Adultos y ninfas de la garrapata Amblyomma cajennense fabricius (Acari: Ixodidae) en equinos y bovinos
Authors: Álvarez C. Víctor , Bonilla M. Roberto
Published: May 2024

Con el objetivo de ampliar el conocimiento sobre el comportamiento de los adultos y las ninfas de Amblyomma en equinos y bovinos, se desarrolló un estudio en San Pablo de Turrubares, provincia de San José. Para el trabajo de campo se empleó 3 métodos: revisión de los animales seleccionados, el arrastre por medio de bandera, y el trampeo con CO2. Los equinos demostraron ser la especie más susceptible para A. cajennense, seguidos por B. taurus. Las ninfas de A. cajennense se concentran en la época seca y a nivel de laboratorio muestran indicadores que colocan a estas garrapatas como individuos con una gran capacidad para sobrevivir sin alimento, lo que dificulta su control. No se encontró correlación entre la precipitación y los niveles de garrapatas; sin embargo, durante la época que incluye la mayoría de los meses lluviosos se encontró una mayor cantidad de garrapatas. Se observó sitios de preferencia por parte de A. cajennense para fijarse al cuerpo de los animales.
Valor nutritivo del heno de maní forrajero deshidratado en un secador solar
Authors: Sancho Adrián Filomena , Rojas-Bourrillón Augusto , WingChing-Jones Rodolfo
Published: May 2024

Se evaluó la henificación, en un secador solar, de Arachis sp. cosechado a 180 días de rebrote. Los tratamientos fueron: camas de material de 15 y 30 cm de espesor; volteos del material (sin volteos, 1 volteo por día y 1 volteo cada 2 días); y 6 y 9 días de secado. La temperatura promedio dentro del secador fue 13,4±7,7°C mayor que la externa y la humedad relativa 17,4±12,75% menor que la externa. La MS (72,52±10,19%) varió por los efectos principales y la interacción espesor de la cama por volteo (p < 0,0001). El contenido de proteína (15,67±0,68% MS), no fue alterado por los tratamientos ni por sus interacciones. Para la FDN y la FDA, las 3 variables fueron significativas con una concentración promedio de 52,23±3,99% MS y 42,41±2,95% MS, respectivamente. El N-FDA fue afectado por las variables en estudio; en promedio se obtuvo 0,175±0,03% de N-FDA, lo que equivale al 6,97±0,99% de N/N-total. Así, los secadores solares son una alternativa de bajo costo para la producción de un heno que supera la calidad del producido a base de gramíneas.
Respuesta del pejibaye para palmito a la fertilización con fósforo en la Zona Norte de Costa Rica
Authors: Boniche Jimmy , Alvarado Alfredo , Molina Eloy , Ares Adrián , J. Smith Thomas
Published: May 2024

Para estudiar el efecto de la fertilización con P y mejorar la tecnología de su aplicación en plantaciones comerciales de pejibaye (Bactris gasipaes) para palmito, en un suelo clasificado como Fluvaquentic Dystrudepts, se evaluó 0, 9, 18, 33, 48 y 108 kg.ha-1 de P2O5 sobre el crecimiento y rendimiento de palmito durante el primer año, y el doble de estas cantidades durante los 24 meses siguientes. Se determinó la disponibilidad de nutrimentos en el suelo a 2 profundidades, así como la concentración de estos en las hojas y pecíolos 3 y 5, y en las raíces. La fertilización con P no afectó en forma importante el crecimiento de las plantas o la producción de palmitos. El número de rebrotes se incrementó, pero el efecto de regresión cuadrática no fue significativo. Tampoco se afectó la concentración de otros nutrimentos en el suelo. Las soluciones extractoras Olsen modificado y Mehlich-3, se relacionaron positivamente con las cantidades de P aplicadas, aunque la solución Olsen modificado extrajo cantidades mayores. La cantidad de P disponible a 0-5 cm de profundidad, así como la correlación entre ambas soluciones extractoras, fue mayor que en el estrato de 5-20 cm. Al muestrear las hojas 3 y 5, los pecíolos, las raíces gruesas y la materia seca, se encontró que los pecíolos se asociaron en forma importante con las cantidades aplicadas de P. Las adiciones de P, aumentaron linealmente las concentraciones de Ca, K, y Mg en los pecíolos. Se recomienda aplicar P al suelo en plantaciones establecidas de 10000 plantas.ha-1 en una dosis de mantenimiento máxima de 30 kg.ha-1.año-1 de P2O5; muestrear los pecíolos como órganos indicadores, realizar el muestreo de suelos preferiblemente de 0-5 cm de profundidad y utilizar la solución extractora de Olsen modificado en el análisis de suelos.
Descomposición y liberación de carbono y nutrimentos de los residuos de cosecha en plantaciones de pejibaye para palmito en Costa Rica
Authors: Boniche Jimmy , Alvarado Alfredo , Molina Eloy , J. Smith Thomas
Published: May 2024

Con el objetivo de ampliar el conocimiento en la descomposición de los residuos de cosecha de pejibaye para palmito y la consecuente liberación de nutrimentos y carbono al medio, se efectúo un experimento en el que porciones de los diferentes órganos fueron introducidas sistemáticamente en bolsas de malla de nylon de 90x45 cm. Las bolsas fueron depositadas sobre el suelo y en la entrecalle de la plantación, y recolectadas en las semanas 1, 2, 4, 8, 16, 24, 32, 40 y 48 para determinarles los contenidos de materia seca, C, N, P, K, Ca y Mg. Los residuos de cosecha presentaron una relación C:N poco favorable para la descomposición efectiva a corto plazo. A la semana 16, se descompuso y liberó cerca del 50% de la materia seca y C; mientras que en la semana 48, la proporción descompuesta y liberada fue cercana al 80%. Los nutrimentos fueron liberados en 3 fases: rápida; decreciente; y lenta. El K fue el que más rápidamente alcanzó la 3a fase, seguido del Mg, P, N y Ca. La liberación de N fue severamente afectada por la relación C:N presente en el residuo inicial. Según los modelos de regresión escogidos, a la semana 16 se liberó cerca del 97%, 80%, 70%, 60% y 50% del K, P, Mg, N y Ca, respectivamente. Con base en las estimaciones, se podrían descomponer cerca de 9 t.ha-1.año-1 de MS, a partir de los residuos de cosecha, los que podrían liberar 4610, 87, 46, 254, 34 y 21 kg.ha-1.año-1 de C, N, P, K, Ca y Mg, respectivamente.
Condiciones ambientales y producción de leche de un hato de ganado Jersey en el trópico húmedo: el caso del módulo Lechero-SDA/UCR
Authors: WingChing-Jones Rodolfo , Pérez Ricardo , Salazar Eduardo
Published: May 2024

Con el objetivo de evaluar el efecto del ambiente sobre la producción láctea diaria de un hato puro de la raza Jersey, aclimatado al trópico húmedo desde su nacimiento, se analizó los registros de producción de 26 animales y sus respectivas lactancias. Las 4 130 observaciones analizadas incluyeron: la identificación de la vaca; el día de pesa de la leche; el mes; el año; la producción de leche diaria; el día de lactancia respectivo; el número de parto; la edad del animal; las temperaturas máxima y mínima; la precipitación; la radiación solar; y la humedad relativa máxima y mínima. Los días de lactancia, el número de lactancias (3a-5a), la edad del animal (7,5-10 años) y el número de parto tuvieron un efecto altamente significativo sobre la producción de leche diaria. Con las variables ambientales se obtuvo que la precipitación > 40 mm.día-1 y la humedad relativa < 80%.día-1 (p < 0,001) presentan un efecto directo sobre la producción de leche y que tanto la temperatura ambiental (p=0,32), como la radiación solar (p=0,31) y sus interacciones, tuvieron un efecto significativo. Finalmente, el incremento en la producción de leche debido a la precipitación diaria ronda 1,0 l.día-1.animal-1, mientras que la merma en producción promedio con relación a la humedad relativa (HR) alcanza hasta 1,75 l.día-1.animal-1.
Residuos de agroquímicos en sedimentos de ríos, Poás, Costa Rica
Authors: Masís Federico , Valdés Juan , Coto Tatiana , León Sandra
Published: May 2024

Se analizó la presencia y distribución de agroquímicos organofosforados y organoclorados en los sedimentos de 3 ríos localizados en un área de producción de ornamentales en el cantón de Poás, Alajuela, Costa Rica. El estudio comprendió 8 meses, con la idea de abarcar las épocas seca, de transición, y lluviosa. Los sedimentos fueron colectados en 10 estaciones de muestreo, ubicadas a lo largo de los ríos, y caracterizados de acuerdo con su contenido de materia orgánica y textura. En 7 de las 10 estaciones muestreadas fueron hallados residuos de agroquímicos con concentraciones detectables, en al menos 1 de cada 4 muestras, pero solo en 4 estaciones los residuos alcanzaron niveles cuantificables. Los residuos evaluados incluyeron 21 agroquímicos entre organofosforados y organoclorados, pero solo fueron encontrados 3 organoclorados, debido a su persistencia en los sedimentos. Los residuos correspondieron a PCNB (80-800 μg.kg-1), Endosulfan-β (40-50 μg.kg-1) y Endosulfan -a (90 μg.kg-1). El Clorotalonil fue detectado solo en una muestra.
The impact of perinatal maternal mental health disorders on the child’s health
Authors:   Department of Paediatrics, Paediatric Nephrology and Allergology, Military Institute of Medicine – National Research Institute, Warsaw, Poland, Jeleniewska Alicja , Tomaszewska Agata ,   Department of Paediatrics, Paediatric Nephrology and Allergology, Military Institute of Medicine – National Research Institute, Warsaw, Poland, Kalicka Joanna ,   Department of Psychiatry, Combat Stress and Psychotraumatology, Military Institute of Medicine – National Research Institute, Warsaw, Poland, Rustecka Agnieszka ,   Department of Paediatrics, Paediatric Nephrology and Allergology, Military Institute of Medicine – National Research Institute, Warsaw, Poland, Kalicki Bolesław ,   Department of Paediatrics, Paediatric Nephrology and Allergology, Military Institute of Medicine – National Research Institute, Warsaw, Poland
Published: May 2024

Perinatal mental disorders constitute an important health and social problem. Pre- and postnatal depression affects both the mother and her child. The most common postpartum mental health disorders include the so-called baby blues, postpartum depression and postpartum psychosis. Depression in pregnancy is associated with a greater risk of premature birth and low birth weight. Depression during pregnancy has also been linked to diabetes and preeclampsia. Furthermore, the influence of maternal mental disorders on the development of allergic diseases and neurodevelopmental disorders in the child has been proven. Perinatal depression can lead to impaired bonding between mother and child, which has a long-term impact on the child’s emotional and social development. Perinatal depression may also affect both mental development and the occurrence of somatic diseases in children. The main mental disorders observed in the children of mothers with perinatal depression include behavioural problems, destructive behaviour, anxiety disorders and insecurity. An increased risk of atopic dermatitis and recurrent upper and lower airway infections has been proven in children of depressed mothers. Considering the above, it seems obvious that the protection of the mental health of pregnant and postpartum women and children should be multifaceted and multi-tracked. Untreated depression may have long-term consequences on the child’s development.
The Main Obstacles to EU Public Diplomacy in China
Authors:   HSE University, Marchukov Alexander , Morari Cristina ,   Moldova State University
Published: May 2024

Introduction. The article is devoted to the key obstacles that complicate the implementation of public diplomacy programmes of the European Union in China. The relevance of this study is due to the existing efforts of Brussels to significantly strengthen its political influence not only in the countries neighbouring the EU but also in the Asia-Pacific region. Methods. The methodological basis of the research is social constructivism (the concept of “Normative Power Europe”), which pays great attention to norms in international relations. The empirical basis of the study involves official EU documents, expert reports and publications of Russian and foreign scholars. Analysis. The article examines the main actors and areas of public diplomacy of the European Union in China. The impact of restrictive measures by the Chinese government on EU public diplomacy as well as the EU foreign policy strategy towards China are analyzed. Results. In China, the EU’s public diplomacy faces a set of different challenges: administrative barriers from the Chinese government; ambivalence of the EU’s foreign policy towards China; the shortcomings of the existing EU public diplomacy system (lack of financial and human resources as well as a “mediocre” assessment of the effectiveness of public diplomacy programmes). According to the authors, the commitment of the EU political elites to certain values and norms that constitute “Normative Power Europe” creates serious challenges for the implementation of the EU’s public diplomacy in China. Authors’ contribution. K.A. Morari identified key actors and areas of public diplomacy of the European Union in China. In addition, A.N. Marchukov highlighted the main obstacles that hinder Brussels’ attempts to “win the hearts and minds” of the Chinese public.
Dynamic response strength of integrated foundation for multiple wind turbines
Authors: Zhu Jiangfeng , Cao Yuguang
Published: May 2024

The focus of this paper is on the conceptual design of offshore multi wind turbine integrated floating foundation (MWF) and the strength analysis method of floating structures considering motion response. Firstly, the maximum environmental load and ultimate motion attitude of MWF were used as boundary conditions to solve the problem of imprecise constraint loads in traditional analysis methods. Then, a stress solving equation based on motion state and inertia release was established to solve the equivalent accuracy problem of floating body motion state. Finally, through theoretical analysis, numerical simulation, and experimental testing, it was found that the stress solution method considered the motion state of the floating body in this paper to be more accurate and reliable, with an error of less than 10% compared to the stress results of experimental testing. Improved calculation accuracy by 30%. These studies provide more accurate analytical methods and theoretical references for predicting the strength of floating structures in actual oceans.
Characteristics and Genesis of Laterite Bauxite in Sompak District and Surrounding Areas, Landak Regency, West Kalimantan
Authors: Winarno Tri , Ali Rinal K. , Simangunsong Harrys , Almiftahurrizqi Almiftahurrizqi
Published: May 2024

West Kalimantan has very large bauxite resources, reaching 2.07 billion tons, equivalent to 57.32% of the total bauxite resources in Indonesia with bauxite reserves of 0.84 billion tons or equivalent to 66.77% of the total national mineral reserves. The researched area covers Sompak District and surrounding areas, Landak Regency, West Kalimantan. This research aims to determine geological conditions, laterization, and characteristics of laterite bauxite in the studied area. Methods used in this research are geological mapping, lateritic mapping, and petrographic and geochemical analyses. The lithology of the researched area is composed of granodiorite, porphyry quartz diorite, granite, porphyry andesite, porphyry basalt, alluvial, and swamp deposits. Laterite profiles in the researched area generally consist of topsoil, latosol, bauxite, and clay zone. The laterite bauxite derived from granodiorite is classified as a medium grade, laterite bauxite from porphyry quartz diorite is classified as high-grade bauxite, laterite bauxite from andesite porphyry is classified as low-medium grade bauxite, and laterite bauxite from porphyry basalt in the studied area is classified as high grade bauxite. Laterite bauxites in the researched area were formed from weathered parent rocks which were intermediate - alkaline igneous rock.