bluuebunny/crossref_metadata_2025 huggingface dataset:
SARS-CoV-2 from Urban to Rural Water Environment: Occurrence, Persistence, Fate, and Influence on Agriculture Irrigation. A Review
Authors: Mancuso Giuseppe , Perulli Giulio Demetrio , Lavrnić Stevo , Morandi Brunella , Toscano Attilio
Published: March 2021

The novel coronavirus disease (COVID-19), originating from China, has rapidly crossed borders, infecting people worldwide. While its transmission may occur predominantly via aerosolization of virus-laden droplets, the possibility of other routes of contagion via the environment necessitates considerable scientific consideration. SARS-CoV-2 viral RNA has been detected in the feces of infected persons, and studies also have reported its occurrence in wastewater and surface water bodies. Therefore, water may be a possible route of virus outbreaks. Agricultural irrigation is the largest use of water globally, accounting for 70% of water use worldwide. Ensuring adequate water quality within irrigation practices is fundamental to prevent harm to plants and soils, maintain food safety, and protect public health. This review aims to gather information on possible SARS-CoV-2 transmission routes within urban and rural water environments, looking into the detection, persistence, and fate of SARS-CoV-2. Based on published literature, the effect of current treatment technologies in wastewater treatment plants (WWTPs) on SARS-CoV-2 inactivation has also been investigated. Preliminary research efforts that concentrated on SARS-CoV-2 indicate that the risk of virus transmission from the aquatic environment may currently be non-existent, although a few studies have reported the presence of SARS-CoV RNA in soils, whereas there are still no studies on the detection of SARS-CoV-2 in crops.
Evaluation of Low-Head Ramped Weirs for a Potamodromous Cyprinid: Effects of Substrate Addition and Discharge on Fish Passage Performance, Stress and Fatigue
Authors: Amaral Susana , Branco Paulo , Romão Filipe , Ferreira Maria , Pinheiro António , Santos José
Published: March 2021

Requalification of low-head ramped weirs through the addition of substrates (retrofitting) has attracted attention in recent years. However, few studies are available on how this measure affects the negotiation of ramped weirs by fish. This study aimed to assess the performance of an experimental ramped weir (3.00 m long with 10% slope; 0.30 m head-drop) to enhance the passage of a potamodromous cyprinid species, the Iberian barbel (Luciobarbus bocagei). Attention was given to testing the effects of the addition of a substrate, in this case cobbles, to the ramp (Nature) vs. a smooth bottom (Control), and discharge (Q; 55 L·s−1 and 110 L·s−1 (or specific discharge per unit width, q = 92 L·s−1·m−1 and 183 L·s−1·m−1)) on fish passage performance. Fish physiological responses to stress and fatigue, measured by glucose and lactate concentrations in blood samples, were also analysed. Results showed that the Nature design generally increased fish movements and successful upstream passages, and enhanced fish passage performance by enabling faster negotiations. Fish movements were also affected by increasing discharge, registering reductions with 110 L·s−1. Results of the physiological parameters indicate that both glucose and lactate concentrations were also influenced by discharge. The outcomes from this study present important information about fish passage performance across low-head ramped weirs and could provide data needed to help biologists and engineers to develop more effective structures to alleviate small instream obstacles.
Water–Food Nexus through the Lens of Virtual Water Flows: The Case of India
Authors: Katyaini Suparana , Mukherjee Mimika , Barua Anamika
Published: March 2021

For a water-secure present and future, there is a need for a transition from water scarcity towards water security. This transition necessitates a look at the complex relationships, and interdependencies, between water and other resources, and the institutions governing them. Nexus approach encompasses these interdependencies. This paper focused on the water–food nexus through the lens of the virtual water (VW) flows concept with the aim to explore the role of the VW flows concept in governing the transition towards water security in a water-scarce economy like India. The key findings of the paper suggests that the highest VW outflows are from highly water-scarce states of India, such as Punjab and Andhra Pradesh, and the moderate to highly water-scarce state West Bengal from 1996–2014. Major VW outflows from these states are to other highly water-scarce states, resulting in the concentration of water scarcity. The main priorities for the governance of the water–food nexus in these states emerge from policies and action plans. These priorities are groundwater overexploitation, water and soil pollution, and uncertainty in rainfall and are linked to agricultural intensification. The water footprint-based VW flow analysis has important insights for sustainable intensification of agriculture, and rectification of the unsustainable VW flow patterns. The study concludes that the VW flows concept embodies the water–food nexus and is particularly relevant for the sustainable future of developing and emerging economies, such as India, grappling with water scarcity and challenges of fragmented environmental governance systems.
Inequalities in general practice remote consultations: a systematic review
Authors: Parker Ruth F , Figures Emma L , Paddison Charlotte AM , Matheson James IDM , Blane David N , Ford John A
Published: March 2021

Background

COVID-19 has led to rapid and widespread use of remote consultations in general practice, but the health inequalities impact remains unknown.

Aim

To explore the impact of remote consultations in general practice, compared to face-to-face consultations, on utilisation and clinical outcomes across socioeconomic and disadvantaged groups.

Design & setting

Systematic review.

Method

The authors undertook an electronic search of MEDLINE, EMBASE, and Web of Science from inception to June 2020. The study included studies that compared remote consultations to face-to-face consultations in primary care and reported outcomes by PROGRESS Plus criteria. Risk of bias was assessed using ROBINS-I. Data were synthesised narratively.

Results

Based on 13 studies that explored telephone and internet-based consultations, this review found that telephone consultations were used by younger people of working age, the very old, and non-immigrants, with internet-based consultations more likely to be used by younger people. Women consistently used more remote forms of consulting than men. Socioeconomic and ethnicity findings were mixed, with weak evidence that patients from more affluent areas were more likely to use internet-based communication. Remote consultations appeared to help patients with opioid dependence remain engaged with primary care. No studies reported on the impact on quality of care or clinical outcomes.

Conclusion

Remote consultations in general practice are likely to be used more by younger, working people, non-immigrants, older patients, and women, with internet-based consultations more by younger, affluent, and educated groups. Widespread use of remote consultations should be treated with caution until the inequalities impact on clinical outcomes and quality of care is known.
Los alcaldes de barrio de Jujuy. Entre la colonia y la revolución
Authors: Baldiviezo Dionila
Published: March 2021

El trabajo expone el rol de los alcaldes de barrio en el entramado jurídico-social de la ciudad de Jujuy a comienzos del siglo XIX. Estos auxiliares de justicia fueron agentes clave en el complejo escenario político creado luego de 1810. Su representación estuvo cruzada por funciones que desempeñaron comoordenadores de la vida municipal y agentes intermedios en el proceso electoral en la etapa republicana. Para explicar el accionar de estos jueces durante el proceso revolucionario y la consolidación del nuevo orden intentamos responder las siguientes preguntas: ¿quiénes eran estos alcaldes de barrio?, ¿de dónde provenían?, ¿de qué manera ejercían el cargo? y ¿cómo construyeron su autoridad? Este trabajo dialoga con la historiografía reciente sobre historia social de la justicia, en particular con las investigaciones sobre la justicia municipal periférica, las alcaldías de barrio, como también con los estudios de caso sobre los diferentes territorios del Río de la Plata.
Comparing the Performance of Induction Machine Drive with Different Rotor-Impedance Profiles
Authors: Eskander Mona , Amer Sanaa
Published: March 2021

This paper compares the performance of a wound rotor induction motor drive (WRIM) with two rotor impedance profiles. The first system involves a diode rectifier followed by variable impedance in the rotor circuit. The second system involves a three-phase variable impedance in the rotor circuit. The comparison concerns the magnitude of starting transients of stator and rotor voltages and currents, the transients settling time of the stator and rotor voltages and currents, the stator and rotor consumed active and reactive power, the electrical torque, and the stable range of operation at sub-and super-synchronous speeds. This comparison is helpful for deciding the more efficient drive to be utilized, the drive with lower harmonics in currents and voltages, and the drive allowing wider speed stable operation range. Better results are obtained for the drive with the three-phase variable impedance connected to the rotor circuit.
Practitioners’ Opinions on Student Assessment Process in Distance Education in the Context of Educational Technologies
Authors: Yörük Tayfun
Published: March 2021

The aim of this study is to reveal the views of the practitioners regarding the measurement and evaluation sub-system of distance education applications in higher education. 11 faculty members working at Akdeniz University, determined with an easily accessible sampling of purposeful sampling methods, participated in this study in which qualitative research method was used. The research is in case study design, one of the qualitative research designs. Therefore, to collect data, a semi-structured interview form was prepared and an interview technique was used in the study. The data were analyzed by the content analysis technique. All the data obtained in the study were coded. Various themes and sub-themes suitable for these themes were determined by the purpose of the research, percentages and frequencies related to the sub-themes were calculated. When the findings are evaluated in the context of education management and the use of educational technologies, it was observed that the problems encountered in measurement and evaluation system in distance education in higher education are the lack of technological infrastructure, the safety of exams, failure to provide equal opportunities. As a result, opinions about an effective measurement and evaluation system have been put forward by the practitioners.
An Analysis of Emotional Intelligence and Academic Performance of Four- Year Integrated B.Ed. Trainees
Authors: Meher Venkateswar , Baral Rajashree , Bankira Sadhujan
Published: March 2021

Emotional intelligence plays a vital role in accomplishing the determined objectives of mankind and promoting learning outcomes. For the first time psychologists, Mayer and Salovey coined and used the term “Emotional Intelligence” and defined it as the capacity or ability of an individual for perceiving, processing, knowing and regulating emotional information accurately in an effective manner involving Intra and inter abilities to guide one’s thinking to make certain changes in others. The objectives of the study were to investigate the emotional intelligence scores of four-year integrated B.Ed. Trainees, to compare the emotional intelligence scores of four-year integrated B.Ed. Trainees, in terms of their sex, to compare the academic performance scores of students having high and low emotional intelligence scores and to investigate the relationship between the emotional intelligence scores and academic performance scores of students. To accomplish the objectives of the present study, descriptive survey cum comparative cum correlational methods were used to accomplish the objectives. In the present study, 50 four-year integrated B.Ed. trainees were taken randomly, so the study sample consisted of 150 four-year integrated trainees of Gangadhar Meher University as a whole. To collect data from the sample groups Emotional Intelligence Scale developed by Nicola S. Schutte, John M. Malouff and Navjot Bhullar in 2008 was used, which consists of 33 items in a five-point scale having Cronbach’s alpha reliability of .90 and the test-retest reliability of .78. Along with that, academic performance scores of the last semester of students were taken. The findings of the study revealed that about 6% of students had high emotional intelligence scores and 94% had above-average emotional intelligence scores. The study revealed no significant difference between the emotional intelligence scores of boys and girls. It was also found that the academic achievement scores of students having high emotional intelligence scores were more as compared to the students having low emotional intelligence scores. The study also reported a significant positive correlation between emotional intelligence and the academic performance of students.
Educational Augmented Reality Technology for Language Learning and Teaching: A Comprehensive Review
Authors: Karacan Cemil Gökhan , Akoğlu Kemal
Published: March 2021

The purpose of this paper is to present a review of Augmented Reality (AR) technology as an educational tool for foreign language education. Following a short yet comprehensive literature review, the paper reviews educational AR technology in terms of learning theories, learning pedagogies, teachers, students, culture, infrastructure, and sustainability based on the framework developed by Osterweil et al. (2016) for evaluating the appropriateness of educational technology use in global development programs. The review showed that AR technology provides several benefits for language learning; however, it is not ready for total integration into language classes. The paper also provides practical suggestions for activities enriched with AR in four language skills and recommended applications. This review offers various implications for teachers, teacher educators, researchers and coursebook developers.
Country in transition (Serbia) case: Circular economy starts from waste management
Authors: Mihajlov Andjelka , Mladenovic Aleksandra , Jovanovic Filip
Published: March 2021

This paper presents research on the circular economy performance in Serbia. The introduction of a circular economy in the field of waste management is only the first step; the concept of circular economy goes beyond waste management in scope and content. In this paper, the authors emphasize this complexity, starting from the set of available definitions, encompassing the global level, the EU level, as well as the level of Serbia, as a representative country with an economy in transition. An analysis is provided of the concept of circular economy with the targets of the Sustainable Development Goals.
The violence dynamics in public security
Authors: Suarez Marcial A. G. , Souza Luís Antônio Francisco de , Serra Carlos Henrique Aguiar
Published: March 2021

This paper discusses the deadly use of violence as a public security agenda, focusing on police lethality and military interventions. Through a literature review to understanding concepts – such as “war,” for example – used in public security policy agendas, the study seeks to frame the notion of political violence, mainly referring to the policies designed to combat violence in Brazil. The objective is to problematize the public security policy based on the idea of confrontation, which adopts the logic of war and the notion of “enemy”. The paper is divided into three parts. The first is a conceptual approach to violence and war, and the second is the analysis of the dynamic of deadly use of force. Finally, the third part is a contextual analysis of violence in Rio de Janeiro, its characteristics, and central actors, using official statistics on violence in the region.
La acción sindical en el lugar de trabajo
Authors:   , Galimberti Carlos María
Published: March 2021

Esta tesis indaga sobre los modos en que las tradiciones político-sindicales se construyen y operan en la vida laboral y sindical de los/as trabajadores/as del sector de agua y saneamiento de la provincia de Buenos Aires, durante los primeros dos años de gestión de gobierno provincial de Cambiemos (2015-2017). La investigación se realizó a partir de una perspectiva etnográfica cuyo trabajo de campo se desarrolló en tres espacios laborales que escogimos debido a la heterogeneidad de sus actividades: 1) la Planta Potabilizadora de Ensenada; 2) los Talleres del Parque ¨San Martín¨ de La Plata, ambos espacios pertenecientes a la empresa ABSA y, 3) tres organismos descentralizados del Ministerio de Infraestructura y Servicios Públicos de la provincia de Buenos Aires ubicados en un mismo edificio: la Autoridad del Agua, el Organismo de Control de Aguas de la provincia de Buenos Aires y el Servicio provincial de Agua Potable y Saneamiento Rural. A lo largo de la tesis analizamos y dimos cuenta de diferentes dimensiones que consideramos necesarias para comprender las tradiciones de organización político-sindical. En primer lugar, las características del proceso de trabajo de los diferentes espacios laborales. En segundo lugar, los conflictos laborales y los modos de actuar frente a estos. En tercer lugar, analizamos los modos de construcción política y cómo intervienen allí narraciones y formas de recuperar el pasado, procesos de incorporación de valores y sentidos dominantes, de legitimación de prácticas y la construcción de liderazgos. En cuarto lugar, indagamos en los procesos de socialización y de transmisión de saberes laborales, sindicales y políticos que contribuyen a la construcción y actualización de las tradiciones así como las trayectorias familiares, laborales y de militancia. Por último, examinamos dos elementos que tensionan y desafían la tradición: la dimensión generacional a través de la incorporación de las nuevas generaciones y la dimensión de género, particularmente las masculinidades. La tesis nos permitió mostrar que lejos de ser un elemento conservador de la vida social, las tradiciones se erigen como verdaderos procesos sociales activos, reservorios de sentidos, valores y mecanismos institucionales que son recuperados y activados selectivamente para utilizarlos frente a nuevos escenarios y objetivos.
Floristic study and assessment of the environmental factors governing the distribution of riparian plants in the Zat sub-Basin: Tensift Watershed, Morocco
Authors: Lahcen Mostakim , Nidal Fetnassi , Mohamed Ghamizi
Published: March 2021

Measuring the phytodiversity and determining environmental factors affecting the abundance and distribution of riparian plants of Zat sub-basin in Morocco were carried out in this study. A hypothesis was tested whether there is any statistically significant difference in environmental parameters and plants communities among the Zat River and its tributaries. For this purpose, water quality parameters such as temperature, pH, salinity, electrical conductivity, Dissolved Oxygen, nitrate and phosphorus concentration, and riparian plants diversity were estimated at 17 stations along the Zat River and its tributaries during the periods (2018 and 2019). The Canonical Correspondence Analysis (CCA) and Pearson correlation were preformed to assess the relationship between environmental parameters, and the distribution and abundance of riparian plants inventoried. The presence of 113 species was recorded, distributed between 43 families and 97 genera, 9 of which were floating-leaved, 24 submerged, and 80 emergent plants. The rare and threatened species inventoried were represented by 7 taxa, whereas 6 species are reported as endemic. Raunkiaer classification showed a dominance of therophytes (38.39%) over the other groups. According to CCA, the abiotic parameters (DO, elevation, salinity and nitrate concentration) were statistically significant parameters governing the distribution and abundance of the riparian plants inventoried. The results obtained reveal the state of the riparian vegetation in the Zat subBasin, therefore we can consider them as a reliable component for the assessment of the ecological status of the aquatic environment.
RETROSPECTIVE STUDY ON OUTCOME OF LAPAROSCOPIC
CHOLECYSTECTOMY IN THE ELDERLY AT JSS HOSPITAL, MYSURU
Authors: S. Sudhir , P Deepak Naik , Sridhar Deepak R.
Published: March 2021

(a) Laparoscopic cholecystectomy is a widely performed surgery in India and across the world for a wide range of indications. It is one of the most
commonly performed surgeries, and hence a study based on outcomes of Laparoscopic cholecystectomy in the elderly would go a long way in
determining the safety and success of Laparoscopic cholecystectomy in the elderly, and could help in timing surgery more effectively to avoid
complications and difculties.
(b) Materials and methods: Out of 250 patients who underwent Laparoscopic Cholecystectomy at JSS Hospital in the period starting January
2019 onwards who were selected by randomization, 65 patients t the criteria (age > 60 years) while 185 patients were aged <60. Data
regarding comorbidities, duration of surgery, duration of hospital stay, conversion to open cholecystectomy was compiled and studied.
(c) Results: A signicant number of the patients in the elderly age group had associated comorbidities. Duration of surgery was prolonged by a
mean duration of 9.5 minutes in the elderly. Duration of hospital stay was increased by a mean of 2.2 days in the elderly. Incidence of
conversion to open cholecystectomy was also higher in the elderly.
(d) Conclusions: Laparoscopic cholecystectomy is a relatively safe and easy surgery with few complications. However, one may experience
difculties while operating on the elderly, viz. Adhesions, contracted gall bladder with hepatic adhesions etc., Which may result in longer
duration of surgery and higher rates of conversion to open cholecystectomy.
A CROSS- SECTIONAL STUDY TO ASSESS THE AWARENESS AMONG DENTAL
STUDENTS OF PATIENT CARE PROTOCOLAS A PRECAUTIONARY MEASURE
AGAINST AEROSOL TRANSMISSION
Authors: Sreeramulu Basapogu , Manchikalapudi Githanjali , Raju Reshma , Bharadwaj Vavilikolanu Sneha , Phebe Jandrajupalli
Published: March 2021

INTRODUCTION:ADental Healthcare facility must be equipped with the right standards of patient safety protocol, in routine clinical practice,
to respond appropriately during a pandemic. The possibility of viral transmission through aerosol- generating procedures is well documented. The
strategical measures taken for patient protection play a crucial role in minimizing disease transmission and risk of cross contamination, not only
during a pandemic outbreak but also in day-to-day clinical practice.
AIMS & OBJECTIVES OFTHE STUDY: The objective of this questionnaire survey was to assess and evaluate the knowledge and awareness
among the dental fraternity regarding basic patient protection protocol involving aerosol generating procedures.
MATERIALS AND METHODS:Across-sectional study was carried out among dental students of Telangana and Andhra Pradesh, in the months
of October and November 2020 using Google Form software. The data was grouped based on clinical experience of the respondents (in years) as
Group I (0-2), Group II (2-5), Group III (5-10) and Group IV (>10), analyzed using statistical software (SPSS 22.0) and presented in terms of
percentages.
RESULTS:Among the 506 participants of the survey, respondents under Group III exhibited relatively high awareness and knowledge of patient
care protocols when compared to those under other groups, with statistically signicant difference.
CONCLUSION: Dental students require constant updating and regular educational programs on patient care protocol to not only serve their
practice but also the community as a whole, whenever a disease outbreak occurs.
PREVALENCE OF HYPERTENSION AMID PATIENTS WITH TYPE-2 DIABETES
MELLITUS- AT A TERTIARY LEVEL HOSPITAL IN CENTRAL INDIA
Authors: Malvi Hakimuddin , Husain Syed Maqsood
Published: March 2021

Background: India has been recognized as the diabetes capital of the world by the year of 2025 Hypertension is a signicant danger factor for
cardiovascular infection, stroke and ischemic coronary illness.
Objective: The aim of this paper is prevalence of hypertension amid patients with type 2 diabetes mellitus- at a tertiary level hospital in central
India.
Methods: Present work is hospital based cross-sectional study was conduct in Chirayu Medical College & Hospital, Bhopal. The study population
consisted of total 300 subjects. Data obtained directly from patients and patients medical les, and the following data were included in the study .
Results: The results showed that the after using chi-square test we found that hypertension was signicantly higher p value(<0.05) among female
patients (69%),patients with long duration diabetes (77%)10 years and more, also it was signicantly higher among patients with current smokers
(69%).
Conclusion: In this study the prevalence of hypertension is increasing in patient with T2DM. Hypertension was the most danger factor for micro
vascular and macro vascular confusion of T2DM.
MEASURING FOOT LENGTH TO IDENTIFY VULNERABLE NEWBORNS IN
NEED OF EXTRA CARE: A CROSS SECTIONAL HOSPITAL BASED STUDY IN
SOUTH INDIA
Authors: Varshni Anu , Sujitha Sujitha , Sridharan Sujatha
Published: March 2021

Background: Neonatal mortality remains high in many developing country settings mainly because of low birth weight (LBW) or preterm births
(PTB). Easy-to-use anthropometric parameters like foot length which are appropriate for resource-limited settings are necessary, to guarantee
these neonates are distinguished and alluded as required for extra care. This research aimed to estimate the sensitivity and specicity, and the
positive and negative predictive values of newborn foot length to identify babies who are LBWand PTB.
Materials and Methods: A cross-sectional study of newborn babies in a tertiary care hospital was carried out between July to September 2018.
Foot length, birth weight and gestational age were estimated on the rst day of life. Receiver Operating Characteristic (ROC) curves were plotted to
determine the operational cut-offs.
Results: In hospital 150 babies were recruited and measured within 24 hours of birth. Of the 150 babies, 21 (14.00%) were born LBW (<2500
grams) and 77 (51.33%) were PTB. Mean foot length on the rst day was 7.62 ± 0.47 cm. Day one average foot length 7.32 cm at birth was 84.5%
(77.70 – 89.89) sensitive and 90.5% (84.64 – 94.68) specic to identify birth weight ≥2500 grams; foot length 7.47 cm had sensitivity and
specicity of 76.70% (69.11 – 83.21) and 49.4% (41.15 – 57.68) to identify those having term births.
Conclusion: Measurement of newborn foot length for home births in resource-limited settings has the potential to be used by birth attendants,
community health workers so that vulnerable newborns can be identied and receive targeted interventions for improved survival.
OVARIAN MASQUERADES: A COMPARATIVE STUDY OF FROZEN SECTION
REPORTING OF OVARIAN MASSES WITH FINAL HISTOPATHOLOGICAL
DIAGNOSIS AT A TERTIARY CANCER CENTRE: A TWO YEAR STUDY.
Authors: G Champaka , Patil Akkamahadevi S , Okaly Geeta V. Patil , N Suma M , Amirtham Usha , S Premalata C
Published: March 2021

Introduction: Intraoperative assessment of ovarian neoplasms on Frozen section (FS) as epithelial and non-epithelial types is crucial for
appropriate surgical management. Accurate categorization is important as treatment plan includes cystectomy for benign tumors, extensive
staging procedures for ovarian carcinomas and oophorectomy or limited surgical staging for borderline tumors especially in younger patients to
preserve fertility.
Objectives: To study the accuracy of ovarian FS interpretation with reference to nal histopathological (HPE) diagnosis on parafn embedded
sections after analyzing by morphology and immunohistochemistry (IHC) wherever necessary.
Materials and Methods:Aretrospective analysis of 170 cases of FS study on ovarian masses during the period of two years (2017, 2018) was done
at a tertiary oncology center.
Results: Of the total 170 cases on frozen, 74 cases were benign, 27 cases borderline and 69 cases malignant. On nal HPE 73 cases were benign, 20
cases borderline and 77 cases malignant neoplasms. The sensitivity and specicity were 95.89%, 95.87% in benign tumors, 80%, 92.66% in
borderline and 88.3%, 98.92% in malignant tumors respectively. The positive and negative predictive values were 94.59%, 96.87% in benign
lesions, 59.25%, 97.20% in borderline, 98.55%, and 91.08% in malignant neoplasms respectively.
Conclusions:In our study there was a good concordance between frozen and nal histopathology in the diagnosis of benign and malignant ovarian
neoplasms. Ovarian FS study is a reliable tool for intraoperative decision making regarding the extent of surgery
استراتيجيات التعلم المنظم ذاتياً وعلاقتها باليقظة العلمية كأحد مهارات القرن الحادي والعشرين لدى طلبة الدراسات العليا في ضوء بعض المتغيرات الديموجرافية: دراسة استكشافية
Authors: Arnout Prof. Dr. Boshra Ismail Ahmed
Published: March 2021

هدف البحث الحالي إلى تحديد مستوى كل من استراتيجيات التعلم المنظم ذاتيا واليقظة العلمية، والتعرف على طبيعة العلاقة بينهما، كذلك التعرف على الفروق في كل من استراتيجيات التعلم المنظم ذاتيا واليقظة العلمية لدى طلبة الدراسات العليا في ضوء بعض المتغيرات الديموجرافية (الجنس، البرنامج الدراسي). اختيرت عينة عشوائية قوامها (118) من طلبة الدراسات العليا من الجنسين، تراوحت أعمارهم بين (26- 38) عام، بمتوسط عمري قدره (31.12) عام، وانحراف معياري بلغت قيمته (3.698). طبق عليهم مقياس استراتيجيات التعلم المنظم ذاتيا ومقياس اليقظة العلمية تم إعدادهم في هذا البحث. أسفرت نتائج البحث عن وجود مستوى متوسط من كل من استراتيجيات التعلم المنظم ذاتيا وكذلك اليقظة العلمية، كما وجدت علاقة ارتباطية موجبة دالة إحصائية عند مستوى (0.001) بين استراتيجيات التعلم المنظم ذاتيا واليقظة العلمية (ر= 0.535)، كذلك توصلت النتائج إلى عدم وجود فروق دالة إحصائياً بين متوسطات درجات الذكور والإناث في استراتيجيات التعلم المنظم ذاتيا واليقظة العلمية، بينما وجدت فروق ذات دلالة إحصائية عند مستوى دلالة (0.01) في كل من استراتيجيات التعلم المنظم ذاتيا (ت= 9.218) واليقظة العلمية (ت=11.158) بين طلبة الدراسات العليا في برنامجي الماجستير والدكتوراه (لصالح طلبة الدكتوراه في كلا المتغيرين). كما أشارت نتائج تحليل الانحدار البسيط إلى أن استراتيجيات التعلم المنظم ذاتيا منبأ دال قوي لليقظة العلمية لدى طلبة الدراسات العليا. فسرت النتائج التي تم التوصل إليها في ضوء الاطار النظري والدراسات السابقة، كما وضعت عدد من التوصيات لتنمية مهارات القرن الحادي والعشرين لدى طلبة الدراسات العليا.
Redox Flow Battery Sebagai Perangkat Penyimpanan Energi
Authors: Silitonga Septiani , Therisno Ricky , Napitupulu Richard A.M. , Manurung Charles S.P. , Siagian Parulian , Chen Yong Song
Published: March 2021

Energy storage such as vanadium redox flow batteries (VRFB) has increased to store renewable energy resources in the last decade. However, the unbalanced crossover level of vanadium is often a major constraint which has a significant impact on battery capacity and life cycle in long-term operation. Performing an asymmetric electrolyte volume is one of many ways to solve this problem. The different volumes on the positive and negative sides were analyzed to see their effect in suppressing the decrease in VRFB capacity. With the result of the optimal electrolyte excess ratio, long-term cycle performance was carried out to investigate the reduction in capacity of VRFBs.
НАУКОВІ ОСНОВИ КОНЦЕПЦІЇ УПРАВЛІННЯ БЕЗПЕЧНІСТЮ ХАРЧОВИХ ПРОДУКТІВ ЗГІДНО З ВИМОГАМИ МІЖНАРОДНИХ СТАНДАРТІВ
Authors: СЛИВА Ю. В.
Published: March 2021

Мета. Основною метою дослідження було розроблення концепції управління безпечністю харчових продуктів з врахуванням ризик орієнтованого та процесного підходу та вимог міжнародних стандартів щодо систем управління безпечністю харчових продуктів. Для досягнення поставленої мети потрібно було вирішити наступні завдання: дослідити сучасні концепції управління безпечністю харчових продуктів, проаналізувати вимоги та підходи міжнародних стандартів і схем сертифікації до систем управління безпечністю харчових продуктів і управління ризиками та керуючись методами аналізу, синтезу та узагальнення розробити концепцію управління безпечністю харчових продуктів, яка застосовна на організаційному та операційному рівнях систем управління з врахуванням принципів НАССР, VACCPі TACCP.
Методика. У роботі застосовувались методи системного аналізу спрямовані на виявлення альтернативних варіантів вирішення проблеми, а саме системний підхід і загальна теорія систем Методика системного аналізу застосовувалась до дослідження систем управління безпечністю харчових продуктів. Крім того, нами був застосований метод моделювання, який є науково обґрунтованим методом оцінок характеристик складних систем, що використовуються для прийняття рішень в різних сферах економічної, та соціальної діяльності.
Результати. Розроблено концепцію управління безпечністю харчових продуктів, яка включає застосування процесного і ризик-орієнтованого підходу та застосування принципів НАССР, VACCPі TACCP, як взаємопов’язаних елементів системи управління безпечністю харчових продуктів. Встановлено, що управління ризиком щодо ненавмисних загроз базується на методології відповідності (якість), та методології попередження (безпечність, НАССР). Управління ризиком щодо навмисних загроз базується на методології захисту (шахрайство VACCP, навмисна шкода ТACCP). Крім того встановлено, що з точки зору сфер впливу як на оператора ринку харчових продуктів, так і споживача управління ризиками стосовно якості та шахрайства з харчовими продуктами лежить в економічній площині, управління ризиками стосовно безпечності та навмисної шкоди лежить в площині впливу на здоров’я споживачів. Слід брати до уваги, що в окремих випадках управління ризиками навмисних загроз (шахрайство VACCP, навмисна шкода ТACCP) може лежати в площині впливу як на економічну складову так і на здоров’я споживача.
Практична значимість. Запропоновано концепція та новий підхід до управління безпечністю харчових продуктів, які відображають поєднання методологій процесного та ризик-орієнтованого підходів з врахуванням вимог міжнародних стандартів до розроблення та функціонування систем управління безпечністю харчових продуктів.
АКТУАЛЬНІСТЬ ДОСЛІДЖЕННЯ СПОЖИВНИХ ХАРАКТЕРИСТИК КОНОПЛЯНИХ ВИРОБІВ, ОДЕРЖАНИХ ЗА ІННОВАЦІЙНИМИ ТЕХНОЛОГІЯМИ
Authors: ДОМБРОВСЬКА О.П. , ЧУРСІНА Л.А. , МАНДРА О.М.
Published: March 2021

Мета. Метою є вивчення споживних характеристик конопляних виробів,одержаних за інноваційними технологіями. Розробці нових способів отримання конопляних виробів за інноваційними технологіями приділяється значна увага в усьому світі. В роботі доведено, що розширення системи оцінки якості споживних характеристик нових виробів, одержаних зі стебел та насіння конопель, що отримуються за інноваційними технологіями є актуальним питанням.
Методика. Під час дослідження використовували передбачені діючими стандартами методи. Огляд джерел технічної та товарознавчої літератури здійснювали за допомогою інформаційно-аналітичних методів порівняльного та системного аналізу.
Результати. У статті представлено аналіз існуючого стану переробки стебел і насіння конопель в різних країнах світу. Проведено аналіз якості одержаних виробів за різними технологіями. Встановлено, що в Україні, не дивлячись на підвищення технологічної активності виробників конопляного волокна і насіння, майже повністю відсутнє товарознавче оцінювання якісних властивостей одержуваних нових виробів, які впливають на організм людини. В роботі наведено оцінку товарознавчих характеристик конопляної продукції на основі існуючої нормативної бази та визначені завдання з розширення цієї оцінки в залежності від функціонального призначення інноваційних виробів. Особливої уваги потребують дослідження санітарно-гігієнічних властивостей, антисептичних характеристик виробів із конопель, оскільки нормативні документи для їх визначення відсутні. Все це є підґрунтям для подальших досліджень. В перспективі будуть досліджені споживні характеристики з урахуванням санітарно-гігієнічних, антисептичних, фізико-механічних властивостей та енергетичної й лікувальної цінності харчових продуктів з конопель.
Наукова новизна. В роботі виокремлено існуючу систему оцінки якості конопляних виробів на основі застарілої нормативної бази. Показники якості, за якими здійснюється сучасна характеристика конопляних виробів, не відображають функціональне призначення інноваційних товарів із стебел та насіння конопель, у зв’язку з цим не можуть бути використані для визначення їх конкурентоздатності на вітчизняному та світовому ринках. Тому, на основі проведеного аналізу, в роботі доведена необхідність розширення системи показників якості конопляних виробів, які враховували б вплив їх на організм людини, тобто санітарно-гігієнічні, антисептичні, біологічні властивості, а також енергетичну та лікувальну цінність харчових продуктів із конопель.
Практична значимість. Запропоновані дослідження можуть бути використані для створення нормативних документів на конопляні волокна, отримані за інноваційними технологіями. Отримані результати досліджень можуть бути використані при виявленні фальсифікованих конопляних товарів, що перетинають кордон України.
Incidencias de la agenda pública en las actitudes políticas del ciudadano a través de la teoría de efectos olvidados
Authors: Ortigosa Hernández Mauricio
Published: March 2021

El presente estudio contribuye al campo del marketing político, a través del uso de instrumentos basados en la Teoría de los Efectos Olvidados. Según esta teoría, los individuos al valuar las incidencias o conexiones entre dos conjuntos de entidades que actúan, una como causas y la otra como efectos, en ocasiones quedan ocultos elementos interpuestos surgiendo de esa manera los efectos olvidados. Para mostrar lo anterior, se solicitó a un grupo de ciudadanos del poniente de la zona metropolitana de la Ciudad de México incluidos los municipios mexiquenses de Huixquilucan de Degollado y Naucalpan de Juárez, que determinaran las incidencias entre dos conjuntos de entidades: por un lado temas de México de una agenda pública, y por otro actitudes políticas que tiene el ciudadano. Las entrevistas se recabaron en fecha cercana a la campaña presidencial y cargos de elección popular del año 2018.
Los resultados indican que los ciudadanos no identificaron varios elementos que se interponen como efectos olvidados entre las dos entidades ya mencionadas, tales como la corrupción, la economía, la confianza en los gobernantes, entre otros elementos.
La demanda turística en una cadena hotelera. Series temporales para un modelo de predicción
Authors: Fernández López Reinier , Vilalta Alonso José Alberto , Quintero Silverio Arely , Díaz González Ledy
Published: March 2021

En un mundo cada vez más incierto donde la dinámica mundial acelera la forma de gestionar los procesos en cualquier sector cobra mucha importancia el pronóstico de la demanda turística. En tal sentido, la presente investigación tiene como objetivo pronosticar la demanda turística de la Cadena Hotelera Cubanacán de Pinar del Río, Cuba, hasta diciembre del año 2019, mediante el empleo de técnicas de series cronológicas, que facilite la planificación y la toma de decisiones en este sector y de este modo trabajar por el logro de una integración en las cadenas productivas, considerando que el turismo es una de las actividades socioeconómicas que activa muchos otros sectores de la producción y los servicios, así como predecir el comportamiento del turismo. Para ello, se empleó el método cuantitativo de investigación como método rector, sustentado en la metodología Box – Jenkins y el método de alisado exponencial de Holt – Winters. También se logra caracterizar la gestión turística tomando en consideración dos indicadores: el costo por peso y los ingresos medios por turista, haciendo referencia a la eficiencia y eficacia respectivamente. Se realizó, además, un análisis multivariado de series temporales que posibilitó caracterizar la actividad turística en cuatro etapas fundamentales en la cadena hotelera tomada como objeto de estudio.
Analysis of the economic impact on a sporting event. Nea regional college games. 2019 edition
Authors: Muguerza Eva , Ojeda Natalia , Ruff Tania Elizabet , Rosenfeld y Sommer Francisco Mauricio
Published: March 2021

This work is a contribution to the economics field of sport, considering the objective main application of the input-output model to the assessment of economic impact of a sporting events, taking as a case study "Regional University Games NEA 2019". In addition, it is proposed to study the different dimensions of the event's legacy, directly associated with the concept of impact.
Thus, this model makes it possible to evaluate the impact of a specific public policy or private demand to stimulate economic activity through a specific sector, sport in this case. To do so, they employ the multipliers of the Argentinian input product matrix and surveys to reveal the consumption of the organizers and participants of the event. All this, with the intention of adding rationality criteria to the decisions made by both public and private sports organizations. It is important to mention that this study joins the lines of research widely studied by Salgado Barandela, Barajas and Sánchez Fernández (2017) on the subject developed mainly in Europe and the United States, not having found academic references in Argentina or Latin America on the subject.
The results indicate that these games have generated an additional boost to the demand for goods and services of the host city and the generation of both economic and social legacy has been verified.
Algebraic Properties of the Coordinate Ring of a Convex Polyomino
Authors: Andrei Claudia
Published: March 2021

We classify all convex polyominoes whose coordinate rings are Gorenstein. We also give an upper bound for the Castelnuovo-Mumford regularity of the coordinate ring of any convex polyomino in terms of the smallest interval which contains its vertices. We give a recursive formula for computing the multiplicity of a stack polyomino.
Largest Component and Node Fault Tolerance for Grids
Authors: Przybyło Jakub , Żak Andrzej
Published: March 2021

A graph $G$ is called $t$-node fault tolerant with respect to $H$ if $G$ still contains a subgraph isomorphic to $H$ after removing any $t$ of its vertices. The least value of $|E(G)|-|E(H)|$ among all such graphs $G$ is denoted by $\Delta(t,H)$. We study fault tolerance with respect to some natural architectures of a computer network, i.e. the $d$-dimensional toroidal grids and the hypercubes. We provide the first non-trivial lower bounds for $\Delta(1,H)$ in these cases. For this aim we establish a general connection between the notion of fault tolerance and the size of a largest component of a graph. In particular, we give for all values of $k$ (and $n$) a lower bound on the order of the largest component of any graph obtained from $C_n\Box C_n$ via removal of $k$ of its vertices, which is in general optimal.
Generalized Catalan Numbers from Hypergraphs
Authors: Gunnells Paul E.
Published: March 2021

The Catalan numbers $C_{n} \in \{1,1,2,5,14,42,\dots \}$ form one of the most venerable sequences in combinatorics. They have many combinatorial interpretations, from counting bracketings of products in non-associative algebra to counting rooted plane trees and noncrossing set partitions. They also arise in the GUE matrix model as the leading coefficient of certain polynomials, a connection closely related to the plane trees and noncrossing set partitions interpretations. In this paper we define a generalization of the Catalan numbers. In fact we actually define an infinite collection of generalizations $C_{n}^{(m)}$, $m\geq 1$, with $C_{n}^{(1)}$ equal to the usual Catalans $C_{n}$; the sequence $C_{n}^{(m)}$ comes from studying certain matrix models attached to hypergraphs. We also give some combinatorial interpretations of these numbers.
On Prime-Valent Symmetric Cayley Graphs of Finite Simple Groups
Authors: Li Jing Jian , Ma Jicheng
Published: March 2021

We give a characterization of the automorphism groups of connected prime-valent  symmetric Cayley graphs on finite (non-abelian) simple groups.
On the Combinatorics of Symmetrized Poly-Bernoulli Bumbers
Authors: Bényi Beáta , Matsusaka Toshiki
Published: March 2021

In this paper we introduce three combinatorial models for symmetrized poly-Bernoulli numbers. Based on our models we derive generalizations of some identities for poly-Bernoulli numbers. Finally, we set open questions and directions of further studies.
Touristic Gazing and Tasting in the Cambodian Cuisine
Authors: Neill Lindsay , Say Lalin
Published: March 2021

Cambodian food tourism, particularly in Battambang Province, provides an excellent opportunity to generate increased tourist numbers and to create a significant point of difference within a globalized and highly competitive tourist marketplace. Responding to that nexus, this research
explores international tourists' feedback from their food experiences in Battambang Province, Cambodia. This research used data gleaned from TripAdvisor about seven restaurants in Battambang that offered international tourist food experiences. Those restaurants included restaurants that were
also social enterprises, restaurants with cooking classes, and stand-alone restaurants. From that cohort our research used 118 reviews that, through thematic analysis, we distilled into our research themes. The research identified six themes as key drivers for the tourist food experience in
Battambang. They included: experiencing the taste of Cambodian food; service encounters and environment; food price and value for money; socialization with local people and other tourists in an educational environment; authenticity and helping the community. Consequently, this research not
only provides a valuable and unique insight for potential tourists and academics, but also illuminates valuable strategies for locals who wish to provide future tourist food experiences in Battambang.
An Analytical Simulation of Boundary Roughness for Incompressible Viscous Flows
Authors: Venetis John
Published: March 2021

The intention of this paper is to investigate the boundary roughness of a mounted obstacle which is inserted into an incompressible, external and viscous flow field of a Newtonian fluid. In particular, the present study focuses on the cross – sectional area of the obstacle, which is assumed to be a non deformable body (rigid object) with a predefined shape of random roughness. For facility reasons and without violating the generality, one may select the cross – section of the body which contains its center of gravity and is perpendicular to the main flow direction. The boundary of this cross – sectional area is mathematically simulated as the polygonal path of the length of a single – valued continuous function. Evidently, this function should be of bounded variation. The novelty of this work is that the formulation of the random roughness of the boundary has been carried out in a deterministic manner.