bluuebunny/crossref_metadata_2025 huggingface dataset:
BETWEEN MISSION AND MONEY: A LESSON LEARNED FROM SOCIAL ENTERPRISE IDENTITY
Authors:   Airlangga University, Wijayanti Anita , Narsa I Made ,   Airlangga University
Published: January 2024

Social Entrepreneurship is a popular business model that proposes entrepreneurship to solve social and environmental problems by selling products or services. In Indonesia, the development of the number and awareness of entrepreneurs supported by the Social Entrepreneurship ecosystem is growing. However, due to the need for a unified definition of 'Social Entrepreneurship' and the slow pace of formal recognition from the government, organizations have developed with mixed practices and results. This study aims to describe the practice of Social Enterprise through the disclosure of corporate identity. Using Identity and Stakeholder Theory, this study explores the five characteristics of identity: mission, activity, governance, performance, and accountability. This multiple case study uses 10 Indonesian Social Enterprises. Data was collected through interviews and speeches in webinars coupled with documentation studies of uploaded narratives, photos, and videos on the company's official website, carried out from March to June 2023. Data analysis uses Nvivo to find themes from various Social Enterprise identity criteria groups. The results show that Social Enterprise has a unique mission and activities that carry a social value where community, empowerment, welfare and sustainability are more emphasized than profit. Institutional commitment as a Social Enterprise is proven by disclosing the impact achieved through impact reports, impact achievement profiles, SDG achievements, or articles in the news column. However, Financial performance is rarely disclosed, even though several companies have disclosed the distribution of their profits. Accountability practice in formal and informal to its stakeholder. This study provides guidelines for how companies disclose and be accountable for their identity as a Social Enterprise.
EFFECT OF DEBT, FIRM SIZE, AND DIVIDEND POLICY ON FIRM VALUE MEDIATED BY CASH HOLDINGS
Authors:   Master of Management, Faculty of Economics and Business, Universitas Brawijaya , Indonesia, Putra Hasannudin Nursalim , Salim Ubud ,   Faculty of Economics and Business, Universitas Brawijaya, Indonesia, Aisjah Siti ,   Faculty of Economics and Business, Universitas Brawijaya, Indonesia
Published: January 2024

The context of this study focuses on the benefits of debt usability, firm size, and dividend policy in increasing the value of cash-mediated companies in LQ45 companies for the period 2017-2020. This study aims to find out and analyze the effect of debt, firm size, and dividend policy on the firm's value, either directly or indirectly, through the mediation of cash holdings. The samples in this study are LQ45-indexed companies from 2017-2020. The samples in this study fall into the purposive sampling category, where respondents are selected based on the criteria specified in this study. The sample numbered 24 companies that can be processed. The analysis method used is descriptive analysis and regression of panel data using the Eviews 10 software application. The results showed that increasing the firm's size will decrease the firm's value while increasing the dividend policy will increase the firm's value. Debt and cash holdings are unable to affect the value of the firm. In addition, only variable debt can negatively affect cash holdings, while the size of the firm and its dividend policy cannot affect cash holdings. This research implies that companies indexed LQ45 need to pay attention to optimal cash holding adequacy because it can be influenced by company debt so that the company can maintain its position in the LQ45 index.
STRATEGY DEVELOPMENT OF SALES ORGANIZATION USING FUZZY AHP: DIGITAL TRANSFORMATION OF FMCG
Authors:   School of Business, IPB University, Bogor City, Indonesia, Kusuma Adhitya Rendra , Syarief Rizal ,   School of Business, IPB University, Bogor City, Indonesia, Ekananta Arry ,   School of Business, IPB University, Bogor City, Indonesia, Sukmawati Anggraini ,   School of Business, IPB University, Bogor City, Indonesia
Published: January 2024

A clear understanding of internal strength allows the company to innovate and adapt in a highly competitive Fast-moving consumer goods market. Therefore, the company's ability to oversee risk and opportunities determines the company's resilience. By employing homogeneous purposive sampling, which focused on the member population of 11 FMCG companies, the present study processed quantitative data from a questionnaire using a Likert scale and qualitative data through in-depth interviews with stakeholders. The data was collected through one-on-one in-depth interviews with 11 respondents online and offline in 12 major cities from August to November 2022. Later, questionnaires were processed using AHP Fuzzy to explain and take into account the role of decision-makers resembling FMCG leaders by defining interactive factors, actors, objectives, and strategies. Factor-actor analysis found that the sales director was the actor with the most influential role in the leadership factor, the sales manager was influential in the Organizational Citizenship Behavior factor, and the sales director was a prominent actor in sales management control. The main goal of the president director, IT/Digital director, supply chain director, and sales director in digital transformation is increasing effectiveness/efficiency in business processes. Besides, the sales manager and sales supervisor aspire to achieve sales targets or sales growth set by the company. In increasing effectiveness/efficiency and achieving sales targets/sales growth set by the company, prioritized strategy can be done through the development of leadership, capability, and human resource capacity. Besides, customer/business partner-oriented digitalization is vital for increasing customer/business partner satisfaction with the company's services/business processes. Furthermore, the present study found leadership models as critical for digital transformation with the realistic scenario (iterative improvement) in all likelihood. Sales organizations are expected to consistently and continuously conduct experiments to find new ways of working and produce digital initiatives that companies need to answer customer/consumer demands. Those strategies can be done by clearly identifying factors, actors, objectives, and strategies for better business execution in digital transformation.
TIKTOK LIVE SHOPPING'S USE OF LIVE STREAMING TO INCREASE WORD OF MOUTH
Authors:   Fakultas Ekonomi dan Bisnis, University of Indonesia, Indonesia, Sonda Ambun Salsabila Kandung , Balqiah Tengku Ezni ,   Fakultas Ekonomi dan Bisnis, University of Indonesia, Indonesia
Published: January 2024

Live streaming has become a well-liked way for businesses to boost interaction and consumer engagement, ultimately leading to positive word-of-mouth promotion. Word of mouth is crucial in business since it serves as a reliable gauge for assessing a product's quality prior to purchase, hence reducing uncertainty in decision-making. Previous studies overlooked the benefits of live streaming for word-of-mouth. Hence, the objective of this study is to examine the emergence of word-of-mouth communication facilitated by live streaming, employing the socio-technical approach and attachment theory. This quantitative research has a total of 12 hypotheses. Data was collected through the distribution of online questionnaires using purposive sampling, by examined 319 TikTok Live Shopping users. The data was collected and analyzed using SmartPLS. Live streaming yields a favorable impact on user engagement and viral marketing. Streamers exert significant effect on audience engagement, fostering strong connections with the platform, user loyalty, and word-of-mouth promotion. Consequently, marketers can optimize the utilization of live streaming by collaborating with the most compatible streamers. Additionally, this study discovered that vicarious expression does not have a beneficial impact on platform attachment. This study suggests using live streaming as a strategy to improve customer retention and build stronger relationships with customers, which offers insightful information for business experts in Indonesia. It addresses the constraints of previous research, which focused mainly on loyalty to brands in terms of transactions, by providing theoretical support for exploring the relationship between user stickiness and word-of-mouth generation on live streaming platforms.
GREEN COSMETICS IN INDONESIA: UNRAVELING ATTITUDE-BEHAVIOR GAP AND GENDER MODERATION
Authors:   Faculty of Economic and Business, Janabadra University, Yogyakarta, Indonesia, Andika Andika , Nadia Nadia ,   Faculty of Economic and Business, Janabadra University, Yogyakarta, Indonesia, Najmudin Mohamad ,   Faculty of Economic and Business, Janabadra University, Yogyakarta, Indonesia, Hasibuan Ale Bemby ,   Faculty of Economic and Business, Janabadra University, Yogyakarta, Indonesia
Published: January 2024

Green cosmetics are becoming increasingly popular as consumers' awareness of the environment grows. This study explores the relationship among Indonesian consumers' attitudes toward green cosmetics, environmental consciousness, behavioral control, subjective norms, product knowledge, purchase intention, and purchasing behavior. Data were collected from 310 respondents through an online questionnaire from various groups of men and women, then analyzed using Descriptive Statistical Analysis and SEM (Structural Equation Modeling). The research findings indicate that attitudes towards green cosmetics significantly influence purchase intention, and environmental consciousness also plays a crucial role in driving purchase intention. Perceptions of behavioral control and subjective norms also significantly affect purchase intention. Product knowledge has a significant impact on attitudes towards green cosmetics. Purchase intention significantly influences actual purchasing behavior. Exciting differences are observed between men and women. Environmental consciousness significantly impacts women's purchase intention, while behavioral control and subjective norms are more dominant in influencing men's purchase intention. The implications of this research are essential for producers and marketers of green cosmetics, offering insights for developing effective marketing strategies. This study highlights the importance of different approaches when targeting male and female consumers, considering the factors influencing their purchase intentions and behavior. These findings contribute to a deeper understanding of consumer behavior related to green cosmetics, encouraging environmentally friendly consumption patterns.
Hacia una nueva metodología para el estudio de la iconografía en sellos del período Neopalacial cretense (ca. 1700-1450 a.C.). Una aproximación desde la Historia del Arte y la Antropología Simbólica
Authors: Cano Moreno Jorge
Published: January 2024

Los estudios sobre la sociedad minoica, en general y del período Neopalacial en particular, cuentan con un problema de base: la imposibilidad de comprender los pocos registros escritos que han sobrevivido hasta el presente. Esta situación genera que muchos aspectos de la sociedad minoica tan solo se puedan plantear de modo hipotético y hace que el abundante corpus iconográfico sea la fuente principal para estudiar a esta cultura. Sin embargo, tradicionalmente se han realizado análisis literales sobre las imágenes como si éstas fueran una representación directa de la realidad. Además, cuando se trata de interpretar a la iconografía en sí misma, se suele recurrir a análisis formales y comparativos para encontrar su posible significado.

Ante esto, en el siguiente trabajo se propone una nueva aproximación teórica para el estudio de los sellos minoicos utilizando un enfoque que combina la Historia del Arte desde una perspectiva semiótica y la Antropología Simbólica. El objetivo principal es comprender de manera más profunda los mecanismos de representación y los valores semióticos que pudieron haber tenido las imágenes -en este caso, las que se encuentran en sellos y sellados- en el contexto del período Neopalacial. Asimismo, esta aproximación puede ser útil no solo para este caso de estudio en particular, si no también, para analizar las formas de interacción social de las culturas antiguas en torno a las imágenes.
Desenvolvimento e avaliação de um modelo NER no domínio da análise cultural e do turismo
Authors: Sotelo Docío Susana , Gamallo Pablo , Iriarte Álvaro
Published: January 2024

O Reconhecimento de Entidades Mencionadas (NER) é uma tarefa essencial de extracção de informação em que as entidades de um texto são identificadas e classificadas. Um dos principais desafios enfrentados pelos sistemas NER é a dificuldade de generalização do aprendido para outros tipos de corpora diferentes dos utilizados durante o treino. Este problema é acentuado pelo facto de a maioria dos corpora de treino utilizados serem de natureza jornalística e, portanto, precisarem de ser adaptados a outros géneros e domínios. Neste artigo, utilizamos um corpus espanhol composto por entrevistas a visitantes da cidade de Santiago de Compostela e anotado com entidades mencionadas, para a avaliação e treino de sistemas NER adaptados ao domínio da cultura e do turismo. Apresentamos uma comparação das diferentes abordagens aplicadas, desde algoritmos clássicos de aprendizagem automática ao afinamento de vários modelos de Transformers. Os resultados obtidos superam significativamente o baseline, representado aqui pelos toolkits Stanza, spaCy e Flair, embora os testes preliminares com entidades não observadas durante o treino sugiram a necessidade de avaliações adicionais da sua capacidade de generalização e o uso de um método de segmentação adversarial no corpus.
Detección de operadores modales
Authors: Nazar Rogelio , Obreque Javier
Published: January 2024

El artículo presenta una propuesta metodológica de carácter mixto — con énfasis en el aspecto cuantitativo — para la detección y registro de operadores modales. Estas unidades pueden definirse como un amplio y heterogéneo conjunto de expresiones que se utilizan en la comunicación escrita y oral para imprimir la visión subjetiva del emisor en su propio enunciado. La presente propuesta se basa en la explotación de un corpus paralelo para aumentar con medios cuantitativos un listado inicial de ejemplos obtenido en una etapa cualitativa. La metodología es simple, efectiva e independiente de lengua, aunque en este primer ensayo nos enfocamos en el castellano.
MHD boundary layer flow due to an exponentially stretching surface through porous medium with radiation effect
Authors:   Department of Mathematics, College of Science and Arts, Rabigh, King Abdul-Aziz University, Jeddah, Saudi Arabia, Salah Faisal , Almohammadi Ahmad ,   Department of Mathematics, College of Science and Arts, Rabigh, King Abdul-Aziz University, Jeddah, Saudi Arabia
Published: January 2024

The purpose of this article is to study the boundary layer flow and heat transfer of the MHD second-grade fluid. By utilizing similarity transformations, the governing equations are transformed into a set of non-linear ordinary differential equations. To get semi-analytical formulations of velocity, temperature, and other variables, we use the homotopy analysis technique (HAM). Then, we employ the Wolfram Language function NSolve to get the solutions. The main finding of the present work is that the flow variables have been influenced by the magnetic field parameter, the porous parameter, and the radiation parameter.
Where Are Disability and Accessibility in Library and Information Science Curricula?
Authors: Copeland Clayton , Simons Rea , Mallary Kevin , Nikiema Jackie , Dorman Evan
Published: January 2024

While serving all library patrons is a core value of librarianship, patrons with disabilities are often overlooked. A contributing factor to this reality is that many graduates of Library and Information Science (LIS) programs feel ill-equipped to serve disabled patrons. This works-in-progress poster presents preliminary results from an analysis of 241 syllabi from 76 North American LIS programs to determine how often accessibility and disability topics are covered in curricula. The analysis also considers how courses prepare students to effectively advocate for and implement accessibility within their professional practice. Preliminary results indicate that accessibility and disability topics are infrequently covered in foundational or required courses. Consequently, students may never develop accessibility competencies during their programs of study. Preliminary recommendations include creating or revising learning objectives and assessments to prioritize accessibility education. Offering required and elective courses that incorporate service-learning and hands-on experience in topics such as user-centered design, accessible facilities and programming, and services to disabled patrons is critical.
Advancing Alzheimer's Disease Risk Prediction: Development and Validation of a Machine Learning-Based Preclinical Screening Model (Preprint)
Authors: Cao Shihua , wang bingsheng , shi yankai , Yao Jiani , Lou Xiajing , He Danni , Chen Yanfei , Qi Wenhao , Wang Bing , Dong Chaoqun , Dong Chaoqun , Zhu Xiaohong , Shi Aili , Cheng Lingling
Published: January 2024

BACKGROUND

Alzheimer's disease (AD) poses a significant challenge for individuals aged 65 and older, being the most prevalent form of dementia. Most existing Alzheimer's disease risk prediction tools have high accuracy, but the complexity and limited accessibility of current AD risk prediction tools hinder their practical use.

OBJECTIVE

Our goal was to leverage machine learning techniques to develop a prediction model that is not only highly efficient but also cost-effective.

METHODS

Utilizing data from 2,968 individuals sourced from the National Alzheimer's Coordinating Center, and we constructed models, including gradient-enhanced machines and random forests, as well as commonly used logistic regression models. For modeling purposes, we employed two popular machine learning algorithms, Random Forest and XGBoost, along with traditional logistic regression methods. The models' performance was evaluated based on five key criteria: the Brier score, accuracy (ACC), specificity (SPE), sensitivity (SEN), and area under the receiver operating characteristic curve (AUC).

RESULTS

The average age of the 2968 participants was 71.1 years, with a standard deviation of 6.8 years, and 60.3% were female. The prevalence of AD was 23.15% (n= 687). The machine learning-based Boruta algorithm identified 16 significant predictors from 33 potential risk factors, with a minimum Root mean squared error (RMSE) of 0.27 when the top 5 variables were selected (education level, depression, rapid eye movement sleep disorder, age, anxiety).We used the SHAP feature in the Gradient Boosting Decision Tree Model importance to rank the top 20 significant predictors and selected the top 4 variables: education level, age, marital status, and depression to construct our model based on cross-validation results. Compared to the logistic regression model, the integrated algorithm XGBoost and the random forest model performed better. Notably, XGBoost outperformed other models, achieving an AUC score of 0.78, ACC score of 0.691, SPE score of 0.677, SEN score of 0.739, PRE score of 0.403, and Brier score of 0.140.

CONCLUSIONS

Individual characteristics and psychological status are more critical than past history. Machine-learning-based AD risk assessment tools for older adults can be easily accessed and show some accurate discrimination, which may be useful in guiding preclinical screening for AD in the elderly population.
Electronic Health Information Exchange among Adult Day Services: Findings from the National Study of Long-Term Care Providers (Preprint)
Authors: Li Yawen , Chok Jay , Cui Geoffery , Roosan Don , Shultz Kenneth
Published: January 2024

UNSTRUCTURED

Our study provides the first robust empirical evidence on the use of electronic health information exchange in Adult Day Services Centers using nationally representative survey data.
Optimization of Lithium Separation from NCA Leachate Solution: Investigating the Impact of Feed Concentration, Pressure, and Complexing Agent Concentration
Authors: Mustika Pra Cipta Buana Wahyu , Suryanaga Edward Chandra , Perdana Indra , Sutijan Sutijan , Astuti Widi , Petrus Himawan Tri Bayu Murti , Prasetya Agus
Published: January 2024

Recycling lithium batteries (LIB) has emerged as an attractive solution in the global pursuit of environmentally friendly practices. The aim of achieving zero–waste hydrometallurgical technology is within reach. This research focuses on utilizing the low-pressure nanofiltration process to address this challenge by separating lithium ions from other ions and achieving a desirable permeate flux. The NCA battery leachate concentrate was obtained through a hydrometallurgical process involving sulfuric acid–peroxide. To ensure the prevention of potential nanofiltration membrane (TS80) fouling, the concentrate is initially filtered using an ultrafiltration membrane (UH004) to remove any particles. The research investigates the impact of pressure (4, 6, and 7 bar), solution concentration (concentrate, 10x, and 50x dilution), and the concentration of the complexing agent (EDTA) on the desired separation performance. The investigation reveals that pressure variations exhibit consistent rejection rates, remaining stable above 80%. A similar trend is observed with the addition of EDTA, which consistently yields rejection rates above 80%. However, when examining different feed concentrations, the rejection of lithium falls below 80% for leachate concentrates. In summary, satisfactory results are obtained by employing nanofiltration with a TS80 membrane at a pressure of 7 bar, a dilution factor of 10x, and using a 0.02M EDTA complexing agent. Meanwhile, it was found that the separation factors (Li⁺/Ni²⁺ = ~8.6, Li⁺/ Co²⁺ = ~7.3, Li⁺/Al³⁺ = ~4.9) and permeate flux ±46.58 L m⁻² h⁻¹. The findings demonstrate good selectivity along with relatively high flux.
Introduction of Fish and Celery Broth to Prevent Hypertension (DURASI) as an Alternative to Salt in Karangrejo Community, Banyuwangi
Authors: Nisa' Nahdhiah Khoirun , Mandagi Ayik Mirayanti , Eka Sari Jayanti Dian , Lailiyah Syifa'ul
Published: January 2024

Hipertensi merupakan salah satu penyakit tidak menular (PTM) yang menjadi penyebab utama kematian di masyarakat dan menjadi permasalahan global. Hipertensi dapat menyerang kapan saja dan dimana saja tanpa keluhan, sehingga penyakit ini disebut dengan silent killer atau mematikan secara diam-diam. Pengendalian hipertensi dapat dimulai dengan meningkatkan pengetahuan dan kesadaran diri masyarakat dalam menerapkan pola hidup sehat. Salah satunya dengan mengonsumsi garam sesuai anjuran WHO yaitu 2.400 mg/hari atau setara dengan 1 sendok teh. Mahasiswa SIKIA Kesehatan Masyarakat Universitas Airlangga menciptakan produk DURASI sebagai alternatif pengganti garam untuk mengendalikan hipertensi. Durasi adalah singkatan dari kaldu ikan dan seledri untuk mencegah hipertensi. Ikan kaya akan omega 3 yang dapat menurunkan tekanan darah dan seledri memiliki ekstrak heksana yang berperan dalam menurunkan tekanan darah serta ekstrak metanol dan etanol yang dapat meningkatkan sirkulasi tekanan darah. Di Puskesmas Kertosari tahun 2021 hipertensi menduduki peringkat 1 dari 10 besar penyakit yang ada di wilayah kerja Puskesmas Kertosari antara lain di Desa Kerosari dan Desa Karangrejo. Dalam menekan kasus hipertensi di Desa Karangrejo dilakukan kegiatan pengabdian kepada masyarakat dengan memperkenalkan produk DURASI sebagai alternatif pengganti garam kepada kader Posyandu lanjut usia sebagai pionir hidup sehat untuk mencegah hipertensi. Upaya pengenalan produk DURASI dilakukan kepada kader Posyandu lansia melalui pendekatan antara lain penyuluhan, pelatihan dan pendampingan. Hasil uji laboratorium diperoleh kandungan natrium DURASI 550 mg/100 gram. Peningkatan pengetahuan masyarakat pada pengukuran pertama rata-rata meningkat sebesar 50% dan pada pengukuran kedua mengalami peningkatan rata-rata sebesar 7%.
Perilaku Memilih Masyarakat Pasca Runtuhnya Dinasti Kekuasaan di Kutai Kartanegara
Authors: Afriandi Fadli
Published: January 2024

Tulisan ini menampik klaim kajian perilaku memilih masyarakat yang telah menuju pola rasional, baik di level nasional maupun lokal. Tulisan ini mengajukan tesis bahwa runtuhnya dinasti kekuasaan menyebabkan perilaku memilih masyarakat kembali ke pola primordial yang awalnya menunjukkan pola rasional. Dinasti kekuasaan ini berada di tingkat lokal, tepatnya dinasti Syaukani-Rita di Kutai Kartanegara. Fokus penelitian ini melihat pada dominasi Rita Widyasari yang unggul di beberapa survei dalam bursa calon gubernur provinsi Kalimantan Timur namun gagal ikut di kontestasi tersebut karena tersandung masalah hukum. Penelitian ini menggunakan metode kualitatif dan teknik pengumpulan data melalui wawancara. Temuan dalam penelitian ini adalah perilaku memilih masyarakat menunjukkan pola primordial. Pola primordial masyarakat tersebut berdasarkan pada basis identitas suku dan agama yang terbagi ke dalam tiga wilayah (hulu, hilir/tengah, dan pesisir). Daerah hulu yang mayoritas suku Dayak cenderung memilih Syaharie Jaang, daerah hilir didominasi suku Kutai memilih Isran Noor, dan di wilayah pesisir yang didominasi suku Bugis lebih memilih Andi Sofyan Hasdam. Sedangkan berdasarkan agama, masyarakat memilih karena figur Hadi Mulyadi yang merupakan pasangan Isran Noor karena kelihatan lebih agamais.
Life Cycle Assessment of Water Treatment Plant Using Open LCA Software
Authors: Jadhav Samiksha Ganesh
Published: January 2024

Abstract: India is bearing from one of the world's worst national water crises. More than 50% of the population from India has no access to safe drinking water. The production of potable water from surface water includes several processes, energy consumption, and chemical dosing. Yet, the water treatment industry may be responsible for significant global environmental impacts, the most common amongst which are the depletion of natural resources and indirect release of pollutants into the water, land, and air through chemicals and energy consumption. Life cycle assessment (LCA) is a tool that could be used to generate information on the environmental impacts of water treatment systems. Hence this study identifies the impact of WTP Miraj by using the LCA approach to determine the holistic profile. Impacts were assessed for construction phase and operational phase by considering the emissions from raw material extraction, manufacturing and use.
Sustainable Production of Building Blocks using A Recycled Plastic Waste
Authors: Emmanuel Ogunjiofor I. , Jude Onwunduba C. , John Okpala I,
Published: January 2024

Abstract: Plastic waste is one of the materials that constitutes environmental nuisance and contribute to global warming. The global need to ameliorate the effect of global warming through waste reduction and recycling necessitated this research. The study involved using recycled plastic waste to produce building blocks. The low density plastic waste were collected from dump sites, cleaned and dried before melted and mixed with a fine aggregate at different ratios. The molten slurry formed by mixture of melted plastic waste and fine was poured into the metal mould and allowed to set. The result of the study showed that plastic sand blocks have a compressive strength ranging from 6.8N/mm2 to13.15N/mm2 which has a 3.3% higher than that of normal sand blocks. The water absorption rate, bulk density and Efflorescence results are within the acceptable limits. The exhibition favorable properties of blocks and need for sustainability of our environment should encourage the use of plastic waste produced blocks. This research indicates that bricks produced with plastics exhibit fine surface finishing, low porosity, and light weight, coupled with high compressive strength. Comparatively, these bricks surpass conventional clay bricks in both strength and weight reduction. The study recommends employing bricks produced with plastics for load bearing and framed structures, as well as in wet lands. Additionally, further investigations into different mix ratios are suggested to enhance quality and durability.
Construcción de modelos matemáticos simples para el cálculo del requerimiento energético de edificaciones
Authors: Mercado María Victoria , Barea-Paci Gustavo Javier , Aceña Andrés Esteban
Published: January 2024

This work looks to build a predictive mathematical model that can provide a first approach to a building’s energy requirement (ER) value in a temperate continental climate. The aim is to contribute to the theoretical knowledge of energy assessment tools. To do this, parametric simulations were run and processed using the EnergyPlus 9.5 and JePlus programs. The results were then used as a dataset to build different mathematical models, using the SageMath program to run equations that predicted the ER of each scenario. Work was done with the models, scaling their complexity with the methods and the number of parameters used. Finally, a model with a low error (0.08) and 15 parameters was chosen. It was noted that, although increasing the number of parameters brought the models closer to a 0.02 error, there was a risk of overfitting. The chosen model seeks to incorporate dynamic simulations' accuracy and validity into a simple prediction tool that construction professionals can apply.
Paludiculture in Latvia
Authors:   Latvijas Universitāte, Ģeogrāfijas un Zemes zinātņu fakultāte, Stivriņš Normunds , Ozola Ilze ,   Ezeru un Purvu Izpētes centrs
Published: January 2024

Klimata pārmaiņas ir veicinājušas to mazinošu aktivitāšu ieviešanu. Latvijā plaši izplatītas gan kūdraugsnes, gan purvi, kuru veidošanos ietekmējuši ģeogrāfiskie un ģeoloģiskie apstākļi. Šīs teritorijas nu jau tiks ietvertas arī oficiālajos nacionālās siltumnīcefektu izraisošo gāzu inventarizāciju ziņojumos Eiropas Savienībai. Viena no klimata pārmaiņu mazinošām aktivitātēm ir piedāvājums atjaunot purvu un kūdrāju hidroloģisko režīmu. Mitros kūdrāju apstākļos samazinās CO2 emisijas, augošā veģetācija no atmosfēras uztver CO2 un nodrošina ilgtermiņa oglekļa noglabāšanu kūdras slāņos. Virszemes augošā biomasa var tikt novākta un izmantota dažādu produktu ražošanā, ko plašāk pazīst kā paludikultūru, kas ir lauksaimniecība un mežsaimniecība – uz mitriem un pārmitriem kūdrājiem un kūdraugsnēm, kas nodrošina kūdras uzkrāšanos un ilgtermiņa saglabāšanos. Šajā pētījumā apskatīta pašreizējā situācija paludikultūru audzēšanas un izmantošanas jomā Latvijā un izvērtēti plašāki paludikultūras ieviešanas aspekti. Kaut arī atsevišķi uzņēmumi un projektu īstenotāji jau audzē paludikultūras un veic izmēģinājumus, pašreizējā likumdošana un valsts politika neatbalsta pilnvērtīgu paludikultūru ieviešanu.
Geographers of different generations in field studies in Latvia and beyond: memories and images
Authors:   Latvijas Ģeogrāfijas biedrība, Kūle Laila
Published: January 2024

Raksts sniedz īsu ieskatu lauka pētījumos Latvijā un ārpus tās, kas papildināts ar fotostāstu par Latvijas dažādu paaudžu ģeogrāfu lauka pētījumiem un mācību praksi. Lauka pētījumi ir savstarpēji cieši saistīti ar ģeogrāfijas mācīšanu augstskolās. Ņemot par pamatu literatūras apskatu, raksts sniedz ieskatu prasmēs, ko ģeogrāfi iegūst, piedaloties lauka pētījumos. Tie kā daļa no ģeogrāfijas mācību procesa mūsdienās ir apdraudēti finansiālu apsvērumu dēļ. Toties vēsturiskā pieredze un materiālais mantojums, kas saistīts ar lauka pētījumiem un mācību lauka praksi Latvijas ģeogrāfijas ilgajā pastāvēšanas laikā, līdz šim nav pietiekami pētīts.
University of Latvia geographers in Siberia
Authors:   Latvijas Ģeogrāfijas biedrība, Zaķis Juris
Published: January 2024

Rakstā sniegta informācija par Latvijas Universitātes ģeogrāfu darbību 20. gs. 60.-70. gados zinātniskajos institūtos Sibīrijā: Sibīrijas un Tālo Austrumu Ģeogrāfijas institūtā, Zemes Garozas, Arktikas Ģeoloģijas un Limnoloģijas institūtā. Īsi apkopotas ziņas par Sibīrijas pētījumu rezultātiem un ģeogrāfu sibīriešu tradīcijām mūsdienās.
Geographers - maritime geology researchers
Authors:   Latvijas Ģeogrāfijas biedrība, Kļaviņš Jānis
Published: January 2024

The paper sheds light on the active involvement of Latvian geographers and maritime geologists in exploring coastal regions and maritime geology throughout the 20th century. It highlights the establishment of the All-Union Marine Geology and Geophysics Scientific Research Institute in 1967, which played a pivotal role in advancing geological research in Latvia. Key researchers such as R. Knaps, V. Ulsts, E. Grinbergs, and I. Veinbergs are mentioned for their significant contributions to studying coastal erosion, sediment flow, and the relief of the Baltic Sea. These experts embarked on expeditions, gathering valuable data and sediment samples, often using specialised ships for geodetic measurements. The text underscores the interdisciplinary nature of the research, involving collaboration between geographers, geologists, cartographers and other professionals. Their efforts led to the creation of detailed profiles, maps, and geological charts, contributing to a deeper understanding of Baltic Sea geology and coastal erosion patterns. The narrative also touches on the challenges and risks encountered during maritime expeditions, including unfortunate fatalities. The author concludes by highlighting ongoing engagement with the Latvian Geographical Society and collaboration with fellow researchers and educators in the field of geography. In essence, the text offers insights into the enduring contributions of Latvian geographers and maritime geologists in advancing the understanding of coastal dynamics, maritime geology, and larger endeavours of scientific exploration in the Baltic Sea region.
One nature – many values for all: Gauja National Park
Authors:   University of Latvia, Faculty of Geography and Earth Sciences, Jeskina Karina
Published: January 2024

The ideas underlying nature conservation have changed over time, from a very narrow view regarding the protection of specific species to the integration of nature conservation into the context of global development. Different coexisting perceptions of natural values can also be observed within the same area, in this case the Gauja National Park. The establishment of the park was implemented within the framework of a different political regime, in the 1970s, in which the protection of cultural landscapes was prioritised. While today the state’s official stance represents the modern ideas of nature conservation, public opinion about nature protection is ambiguous. By studying the historical context and implementing other research methods, an insight was gained into the society’s coexisting, often different visions of what is valuable in nature. Ethical considerations, which are often expressed both in the media and in the opinions of the residents, show a lack of understanding of the existing nature protection system and its methods.
Work environment risk management at petrol stations
Authors:   University of Latvia, Faculty of Geography and Earth Sciences, Kalva Oskars
Published: January 2024

Work environment risk factors have a big influence in the daily life of employees at every company and work environment. In this study, a wide-ranging work environment risk assessment was carried out, using qualitative, quantitative, and semi-quantitative risk assessment methods, comparing the obtained results, and influencing factors, as well as evaluating the work environment management system and recommending possible improvements in its future development. The importance of the topic is justified by the fact that petrol stations are sites of heightened danger, where employees must pay greater attention to ensuring and maintaining a safe and secure environment to prevent the transformation of potential risks into real accidents or incidents. The work was developed at a company in Riga, Latvia, and station surveys were conducted in March 2021. As part of the work environment risk assessment process, four petrol stations in Pardaugava, Riga, were chosen for the risk assessment and measurements. In addition to station evaluations, an employee survey was conducted at 66 petrol stations throughout Latvia.
Employment of geography study graduates in Latvia
Authors:   University of Latvia, Faculty of Geography and Earth Sciences, Apsite-Berina Elina , Jegermane Ieva ,   University of Latvia, Faculty of Geography and Earth Sciences, Burgmanis Girts ,   University of Latvia, Faculty of Geography and Earth Sciences, Berzins Maris ,   University of Latvia, Faculty of Geography and Earth Sciences, Kalvane Gunta ,   University of Latvia, Faculty of Geography and Earth Sciences
Published: January 2024

Geography is an interdisciplinary field that explores human-nature interactions. Critical thinking and a knowledge of diverse interrelations are required for the study of geography. Geography graduates must be adaptable and quick learners in order to meet the needs of a continuously changing employment market. The aim of this paper is to investigate the nature of employment for geography graduates. The paper gives an overview of the field of geography and labour market demand for geography graduates. This study is based on the data of the 2021 census, labour market data from the Ministry of Economics, monitoring data from the Ministry of Education and Science on graduates in 2017–2020, and also State Revenue Service data on occupations. The findings demonstrate that higher levels of education lead to better job chances. Graduates of geography study programmes receive qualifications that allow them to work in science-intensive sectors of the economy, such as the professional, scientific, and technical services sector of the quaternary economy.
Mophological description of the parasitic copepod Pandarus boscii (Siphonostomatoida: Pandaridae) found on the Picked dogfish Squalus acanthias (Squaliformes: Squalidae) in Turkish waters
Authors: Öktener Ahmet
Published: January 2024

Pandarus boscii was previously reported in Mustelus mustelus (basionym: Squalus mustelus), but the original description of P. boscii was incomplete and inadequate. P. boscii is currently accepted as a synonym of Pandarus bicolor. Females of P. boscii differ in that the body is colorless or pale (in P. bicolor the cephalothorax is brown and the dorsum is yellow), the first and distal segments of the antennule have 23-25 plumose setae and 12 setae, respectively (in P. bicolor are 24-26 plumose setae and 13 setae), mandibular blade with 7-8 teeth (in P. bicolor are 8 teeth), maxilliped with one seta (in P. bicolor absent), proximal exopodal segment of the second leg with 5 spines (in P. bicolor are 6 spines). Significant differences were observed between male individuals of the two species, such as: smaller total body measuring 3.5 mm in length (in P. bicolor 3.9 mm), first and distal segments of the antennule with 15-17 plumose setae and 14 setae, respectively (in P. bicolor 26-27 plumose setae and 12 setae), mandibular blade with 7 teeth (in P. bicolor are 8), first antennal segment with one process and maxilliped with one seta (in P. bicolor absent), leg 5 with one naked and one plumose seta (in P. bicolor 3 plumose setae and a robust seta), distal exopodal segment of 3 and 4 legs with 2 spines (in P. bicolor 4 spines), distal endopodal segment of 3 and 4 legs with 4 and 3 setae, respectively (in P. bicolor with 5 and 4 setae). A detailed description of P. boscii is provided from individuals found on the body surface and fins of the spiny dogfish Squalus acanthias, recently collected in the Sea of Marmara, Turkey. Therefore, according to the results Pandarus boscii and P. bicolor are different species.
Composición, distribución vertical y dinámica temporal del ensamblaje de moluscos en el litoral rocoso de Isla Fuerte, Colombia
Authors: Sevillano-Romero Yonger , Nisperuza-Pérez Carlos A. , Quirós-Rodríguez Jorge A.
Published: January 2024

Las investigaciones científicas en litorales rocosos insulares de Colombia son escasas. Los trabajos desarrollados hasta ahora se han enfocado en la generación de inventarios taxonómicos, pero poco se conoce cómo los ensamblajes de las especies de este ecosistema pueden variar, teniendo en cuenta escalas espaciales y temporales. El presente estudio evaluó la composición, distribución vertical y dinámica temporal del ensamblaje de moluscos del litoral rocoso de Isla Fuerte. Se realizaron tres salidas de campo durante el 2015, en dos localidades (Punta El Inglés y El Latal). Se registraron 1.264 individuos, distribuidos en 52 especies. La clase mejor representada fue Gastropoda, destacándose por sus abundancias Nerita tessellata, Hinea lineata y N. versicolor. En términos de distribución vertical, el supralitoral fue dominado por especies de Nerita; el mesolitoral por H. lineata, y el infralitoral por Claremontiella nodulosa y quitones de la familia Ischnochitonidae. A nivel espacial, El Latal registró mayor riqueza específica, pero menor abundancia de organismos. A escala temporal, la abundancia de moluscos fue mayor en época seca y menor en época de lluvia. El PERMANOVA mostró que la abundancia de las especies presentó diferencias marcadas entre zonas del litoral rocoso y las épocas climáticas (P < 0,05). El MDS-M pone en evidencia que hay especies representativas para cada zona del litoral rocoso; y que además, existe una variabilidad del ensamblaje de moluscos, teniendo en cuenta las épocas climáticas.
Asentamientos de Argopecten purpuratus, sobre vestigios de alga Rhodymenia sp., que resistió efectos del ENOS 97-98, en la Reserva Marina La Rinconada, Antofagasta, Chile
Authors: Avendaño Miguel , Cantillánez Marcela
Published: January 2024

The presence of Rhodymenia sp., under the thermocline after El Niño (ENSO) allowed massive settlements of two cohorts of Argopecten purpuratus in March 1999, reaching 1,152 ind. m-2, with size of 7.0 and 4.4 mm. In the mid of June, the spat moved towards shallow waters, with an average density of 19.1 ind. m-2, that was reduced to 14.0 ind. m-2 in March 2000 reaching two cohorts of 75.1 and 67.9 mm. It is concluded that algae that resist warming of ENSO would act as settlement zones for the pediveliger, diminishing the effect of wear in the post ENSO recruitment registered by A. purpuratus population in Chile.
Removal of methylene blue azo dye from aqueous solution using biosorbent developed from floral waste
Authors:   Amity Institute of Environmental Sciences, Amity University, Noida-201 301, India, Agarwal S. , Rana N. ,   Amity Institute of Environmental Sciences, Amity University, Noida-201 301, India, Bhardwaj P. ,   Amity Institute of Environmental Sciences, Amity University, Noida-201 301, India, Tiwari G.N. ,   Department of Teacher Education, Nagaland University (Central University), Kohima Campus, Meriema-797 004, India, Yadav A.K. ,   School of Biotechnology, Shri Mata Vaishno Devi University, Katra-182 320, India, Garg M.C. ,   Amity Institute of Environmental Sciences, Amity University, Noida-201 301, India, Mathur A. ,   Department of Physics, UPES, Dehradun-248 007, India, Tripathi A. ,   Department of Environmental Science, Nagaland University, Hqrs. Lumami, Zunheboto-798 627, India
Published: January 2024

Aim: The present study was carried out to prepare biosorbent from temple floral waste (Tagetes erecta) by pyrolysis and chemical activation method for removal of methylene blue dye from aqueous solution. Methodology: Floral waste of Tagetes erecta collected from the temples were segregated, washed and dried to form biochar by direct pyrolysis and chemical activation method. Followed by physio-chemical analysis of biosorbents the most efficient biochar was selected for the removal of methylene blue dye from aqueous solution. The adsorbent efficiency and percentage removal of methylene blue dye was studied using various doses of biochar (10, 20, 30, 40, 50, 60, and 70 mg 100 ml-1,), effect of pH (2.0 to 4.0, 6.0 to 8.0, and 10.0 to 12.0) and effect of contact time etc. Results: The comparative physio-chemical analysis of the bio chars suggested that the activated charcoal made from temple flower waste by the direct pyrolysis method showed better performance, with its low moisture content (5.3%), low ash content (4.3%), higher yield, larger surface area, and higher porosity (65.3%) as compared to the biochar obtained from chemical activation. The percent adsorption significantly increased (p<0.05) from 76% to 87.0% on increasing biochar dose from 10.0 to 70.0 mg 100 ml-1. On increasing the pH of the solution from 4.0 to 6.0, Methylene blue removal significantly increased (p<0.05) from 88.0% to 91.0%. Interpretation: It is possible to manage floral waste from temples in a sustainable and environmentally responsible manner by converting it into biochar and using it for the treatment of waste water in order to eliminate hazardous dyes. Key words: Activated carbon, Azo dye, Bioremediation, Biochar, Floral waste, Methylene blue
Agro-advisory services for increasing production, profit under climate change scenario in old alluvial zone of West Bengal
Authors:   Agro Meteorological Field Units, Uttar Banga Krishi Viswavidyalaya, Cooch Behar-736 165, India, Saha S. , Sutradhar S. ,   Agro Meteorological Field Units, Uttar Banga Krishi Viswavidyalaya, Cooch Behar-736 165, India, Karforma J. ,   Agro Meteorological Field Units, Uttar Banga Krishi Viswavidyalaya, Cooch Behar-736 165, India, Mondal S. ,   Agro Meteorological Field Units, Uttar Banga Krishi Viswavidyalaya, Cooch Behar-736 165, India, Rai A. ,   Agro Meteorological Field Units, Uttar Banga Krishi Viswavidyalaya, Cooch Behar-736 165, India, Bandyopadhyay S. ,   Agro Meteorological Field Units, Uttar Banga Krishi Viswavidyalaya, Cooch Behar-736 165, India, Choudhury A. ,   Department of Soil Microbiology, Uttar Banga Krishi Viswavidyalaya, Cooch Behar-736 165, India
Published: January 2024

Aim: To increase the net income of farmers by reducing losses caused by extreme weather events and reducing the cost of cultivation using weather advisory and to popular the Agro-advisory service at the block level. Methodology: Data was collected from the selected farmers by interview schedule, and the Weather forecast data was obtained from the Regional Meteorological Centre Kolkata, India Meteorological Department, Alipore biweekly i.e., every Tuesday and Friday. Results: The results showed that the farmers who followed the weather based advisory were able to reduce the cultivation cost like irrigation cost, fertilizer cost, plant protection chemicals etc., than non-users of advisory in Rice and Brinjal crops. Farmers saved Rs. 1940 and Rs. 2444 per ha for rice cultivation and saved Rs. 6685 and Rs. 6688 per ha for brinjal cultivation in a single season by following advisories. Interpretation: The studies showed that the application of advisory bulletin based on realized and forecasting of weather parameter is a useful tool for increasing the production and profit. The farming community who are utilizing the agro-advisory bulletin for agricultural practices, reduce the cost cultivation and increase the yield as well as profit. Key words: Agro-advisory services, Climate change, Economic benefit, Weather forcast