bluuebunny/crossref_metadata_2025 huggingface dataset:
Storytelling como estrategia didáctica en la comprensión lectora del nivel elemental
Authors: Guanoluisa Carreño Gina Patricia , Loor Salmon Liliana del Rocío
Published: March 2024

La comprensión lectora refiere a la capacidad de entender, interpretar y extraer significado de un texto. Sin embargo, cuando existen dificultades en comprender lo que se lee, se pierde interés y motivación por la práctica de la lectura. Es por esta razón que el presente estudio analizó el uso del Storytelling como estrategia didáctica para mejorar la comprensión lectora en los estudiantes del nivel elemental. La metodología fue de tipo observacional, descriptiva, transversal, el enfoque cuantitativo. Los métodos que se emplearon fueron el inductivo-deductivo, empírico y el estadístico-descriptivo. Las técnicas utilizadas fueron la observación y una entrevista estructurada. Se empleó una ficha de observación en tiempo real dirigida a los estudiantes y una entrevista a los docentes. La población estuvo representada por 500 estudiantes y 30 docentes. Asimismo, la muestra seleccionada fue de 90 estudiantes y 3 docentes que imparten el nivel elemental. El muestreo fue no probabilístico por conveniencia. Los resultados de este estudio muestran que al utilizar en el contexto educativo lecturas de cuentos infantiles de interés propio, que cuya descripción los estudiantes utilicen sus propias palabras constituye una estrategia didáctica adecuada para atrapar la atención del que lee y dar comprensión a lo leído. El tiempo dedicado a la lectura varía, y la autoevaluación de la comprensión lectora muestra que el 66,67% de los docentes la califican como "regular". Se concluye que estos resultados destacan la necesidad de una planificación pedagógica específica para fortalecer las habilidades de lectura.
Analisis Makna Filsafat Dan Nilai Kebijaksanaan Lokal Dalam Tradisi Hujan
Authors: Nabilla Khoiriyati Hesti , Diah Wijayanti Kenfitria , Ajeng Rahadini Astiana
Published: March 2024

Penelitian ini menjelaskan makna filosofis dan nilai hikmah dalam hujan tradisi dhawet yang dapat dikaitkan dengan materi pembelajaran bahasa jawa di SMA. Penelitian ini dilakukan di Desa Banyuanyar, Kecamatan Ampel, Kabupaten Boyolali , Provinsi Jawa Tengah. Selain itu juga dilakukan penelitian di SMA Negeri 3 Boyolali untuk disesuaikan dengan materi pembelajaran khususnya materi teks ekspositori. Penelitian yang saya gunakan adalah metode penelitian deskriptif kualitatif untuk mengetahui keadaan sebenarnya pada saat penelitian berlangsung. Jadi mudah untuk menemukan data yang obyektif. Dhata yang akan dibawa seperti prosesi adat , apa makna filosofisnya, dan apa nilai kearifan lokal yang terkandung dalam hujan tersebut. ketat tradisi . Sumber data dilakukan dengan wawancara. Subyek penelitian diambil dengan menggunakan teknik snowball sampling, pengumpulan data melalui observasi, wawancara dan dokumentasi. Validasi data menggunakan triangulasi sumber dengan cara wawancara kepada tokoh masyarakat di Desa Banyuanyar , Kecamatan Ampel, Kabupaten Boyolali , guru bahasa Jawa di SMA Negeri 3 Boyolali , dan siswa kelas X di SMA Negeri 3 Boyolali . Selain itu, terdapat triangulasi teori dengan menggunakan jurnal penelitian yang sesuai. Analisis data menggunakan teori Miles & Huberman. Berdasarkan hasil penelitian dapat ditemukan urutan prosesi, makna filosofis dan nilai kearifan lokal dalam hujan tradisi dhawet dan juga dapat dikaitkan dengan bahan ajar bahasa jawa di SMA. Selain itu ada implikasi pedagogis dan praktis.
Factors affecting the offshore fishing household’s access to formal credit in Nha Trang City
Authors:   State Bank of Vietnam branch Khanh Hoa province, Nguyễn Hoài Bảo
Published: March 2024

This study aimed at finding factors affecting the offshore fishing household’s access to formal credit in Nha Trang city. The study used Logit model to measure impacts of independent variables on dependent variables. The analysis results from 120 households show that the proportion of offshore fishing households in the area having access to formal credit is low. Dectected factors include: educational level, professional experience of the head of household, number of trips and voyage time. The research results also suggest that educational policies and credit policies, especially in oder to prevent credit risks and change the perception of fishermen in borrowing, should be considered to improve the offshore fishing household’s access to formal credit in Nha Trang city
Transient analysis of laminated plates in thermal environment
Authors: Sadiq Ibtehal , Majeed Widad
Published: March 2024

Transient displacement of laminated plates under combined load based on Mantari' s displacement field are investigated. The solution is implemented under transient mechanical load (sinusoidal, step and triangular sinusoidal distributed pressures pulse) and thermal buckling for plates with different layer orientation and thickness ratio. Equations of motion based on higher-order theory are derived through Hamilton' s principle, and solved using Naviertype solution for simply supported laminated plates. The results are presented for many effective parameters such as the number of laminate and orientation on the dynamic response of plates. Results show the validity of this displacement field in studying response of laminated thick and thin plates under varied transient loading and design parameters.
Combined impact of primary-secondary ratio and excess air on coal-fired power plant performance
Authors: Darmadi Djarot , Teguh Nurdin , Yuliati Lilis , Siswanto Eko , Talice Marco
Published: March 2024

The primary-secondary air ratio is believed to impact both the combustion process and the overall performance of a power plant. This study aims to investigate how an increase in the primary-secondary air ratio affects the performance of a power plant located in North Gorontalo, South Sulawesi, Indonesia, using a GateCycle model. We conducted simulations of 48 variations based on three primary-secondary ratio values (PA-SA) to determine the optimal proportion of PA-SA. Our findings indicate that the optimal PA-SA ratio under stoichiometric conditions was 25-75%, resulting in a total cost of 108.03 million Rupiah per hour with a fuel burn rate of 22756 kg/h. When operating with 10% excess air, the optimal PA-SA ratio remains 25-75%, and the fuel flow and total cost were 22947 kg/h and 108.94 million Rupiah, respectively. Similarly, under 20% excess air, the optimal PA-SA ratio was also 25-75%, with a fuel flow rate and total cost of 23144 kg/h and 109.87 million Rupiah, respectively
Gender Equality as a Necessary Approach for the Country’s Development Process and for Gender Integration
Authors: Dhuli Brikena , Dhamo Ana , Dhamo Iris
Published: March 2024

The key word in the concept of gender integration is the word perspective. To implement this concept, a major change in the way we think and act is necessary. (Gender Integration in Practice, 2007:11) When gender equality is discussed as a policy in its own right, the focus is on gender structures, not just women as underrepresented gender groups. Gender mainstreaming is the inclusion of a gender perspective at every stage of the process, approval, implementation, planning, evaluation and delivery of legislation, policies or programmes. In all political, economic and social spheres, taking into account the promotion and advancement of equal opportunities between men and women. Defined as equality between men and women in all spheres, both public and private, gender equality means equal access to and control over resources and benefits, equal participation in political decision-making, and equality before the law for women and men. (Shkurti 2009:19). Gender is not just a socially constructed definition of women and men, it is a socially constructed definition of the relationship between the sexes. Policies and structures play a very important role in living conditions and often institutionalize the maintenance of the social construction of gender (Anastasi, Mandro-Balili, Shkurti, Bozo, 2012:8). This social construction contains an unequal power relationship with male dominance and female subordination in most spheres of life. This means a true partnership between men and women and their sharing of responsibility for correcting imbalances in their public and real lives. The issue remains in the use of the skills, values and talents of every citizen, as well as in the inclusion of women and men in the construction of society. Gender inequality must be fought, protected and promoted as a human right. Gender equality means participation, empowerment and visibility of both sexes in all spheres of public and private life. An important goal is the full recognition and implementation of women's rights as human rights. This means respecting, protecting and promoting the human rights of both women and men, ensuring that both parties fully respect these rights. It also means fighting interference with women's freedom and dignity.
Diversified Roles of Insects in Essential Ecosystem through Pollination for Achieving Sustainable Goals
Authors: Bhowmik Biswanath
Published: March 2024

Pollination is an ecological process that involves the transfer of pollen from the male to the female part of the flower with the help of various abiotic and biotic pollen dispersal agents and is an essential pre-requisite for fertilization and fruit/seed dispersal. Insects constitute one of the primary groups of pollinating agents, as the association between insects and flowers is well established. As flowers radiated so did the mouthparts of the insects exploiting them. Various insect groups, which are of prime significance in the pollination of agricultural and horticultural crops mainly belong to the orders Hymenoptera (bees, ants and wasps), Diptera (flies, mosquitoes, fungus gnats, midges), Coleoptera (beetles and weevils), Lepidoptera (moths and butterflies), Thysanoptera (thrips), Hemiptera (bugs) and Neuropteran (lace wing flies). This work is mainly based on detailed and through observations/study made from various cash crops viz., Brassica nigra, Coriandrum sativum, Tagetes erecta and Helianthus annuus from North 24 Parganas of South Bengal region.
Exploring the Influence of Post-Earnings Announcement Drift and Investor Sentiments on Investor Trading Behavior: A Qualitative Analysis
Authors: Tariq Shaheen , Ullah Asma Rehman , Raza Muhammad
Published: March 2024

"Post-Earnings-Announcement Drift" is a market phenomenon, which refers to investors’ tendency to overreact to the earnings announcements in conducting their investment decisions. However, this effect shows up gradually over the whole period that stock of the company is being sold out following a bullet earnings surprise. Form radically different treatments from the efficient market hypothesis (EMH), where prices of stocks will be able to quickly and fully adjust to any new coming information, it takes time for the drift to reveal itself. This happens as a slow and eventual process. This research study investigates the impact of investor sentiments and post earnings announcements drift on investor trading behavior within the Pakistan stock market context. Twelve participants that comprises of institutional and individual investors, were selected using the convenience sampling methods. Semi-structured interviews were conducted to explore the fluctuations in stock prices, investment strategies, and the market conditions. NVivo software was employed to analyze the interview transcripts, revealing themes related to the fundamental analysis, dividend importance, decision-making strategies, sources of information, investor sentiments, earnings announcements, stock pricing, information leakage, and the market anomalies. The findings highlight the significance of both the rational analysis and emotional responses in investment decisions, the importance of timely earnings disclosures, and the presence of market anomalies and the information leakage.
Co-Designing Teacher Residencies: Sharing Leadership, Finding New Opportunities
Authors:   Western Washington University, Miller Matt , Strachan Steph ,   Western Washington University
Published: March 2024

Teacher educators at Western Washington University's Elementary Education program and district administrators at Ferndale School District reconsidered their approach to teacher preparation. They revised residency-like work opportunities, the placement process, district "on-boarding" processes, and created responsive professional development throughout the residency.
EFEKTIVITAS METODE GERAK DAN LAGU UNTUK MENINGKATKAN KECERDASAN KINESTETIK PADA ANAK USIA DINI
Authors: Nursiti Depi , Hamid Lukman , Nurhidayah Nisa
Published: March 2024

Anak usia dini berada pada tahap Golden Age ditandai dengan perubahan yang signifikan dalam aspek perkembangannya (seperti bahasa, seni dan fisik motorik). Agar pada tahap ini dapat dilalui dengan baik oleh setiap anak maka perlu diupayakan pendidikan yang tepat, termasuk pada perkembangan kecerdasan musikal dan kecerdasan kinestetik anak. Pembelajaran yang dapat dilakukan oleh guru salah satunya dengan pembelajaran gerak dan lagu. Pembelajaran gerak dan lagu ini dapat mempengaruhi dan mengendalikan pusat syaraf, serta membantu anak untuk lebih mengembangkan kecerdasannya tidak hanya pada aspek pengembangan kognitif, bahasa dan emosionalnya saja tetapi juga pada pengembangan seni dan fisik anak. Tulisan ini bertujuan untuk mengetahui efektivitas metode gerak dan lagu untuk meningkatkan kecerdasan kinestetik anak usia dini di RA Ar-Rahmah kawalu. Metode yang digunakan adalah pendekatan kualitatif dengan metode deskriptif terhadap anak kelas B RA Ar-Rahmah Kawalu Tasikmalaya.
THE CORELATION BETWEEN PARENTAL COMMUNICATION ABOUT MENSTRUATIONAL AND PERSONAL HYGIENE BEHAVIOR OF ADOLESCENT GIRLS AT JUNIOR HIGH SCHOOL 1 KALIANDA
Authors: Irvani Nava Santia , Agil Hilda Meriyandah , Gea Nurti Y.K
Published: March 2024

Personal hygiene behavior for young women is something that needs to be considered, considering that poor personal hygiene can lead to reproductive health problems such as excessive vaginal discharge, the factors that influence personal hygiene behavior, namely parental communicationteenage girl.parent-child communication can determine how likely the child is to have good personal hygiene behavior during menstruation. The lower the communication, the more likely the child is to take personal hygiene actions that are wrong. The task of parents is to direct, provide information, and help children to avoid the possibility of making wrong decisions that will be bad for them. The design in this study is analytic with a cross sectional research design. The sampling technique used in this research is using purposive sampling technique, the number of samples is 140 respondents. Based on the results of the Chi Square statistical test output, the P-Value value (0.000) < value (0.05), this indicates that Ha is accepted... Thus, it can be interpreted that there is a relationship between parental communication about menstruation and personal hygiene behavior for adolescent girls at SMP N 1 Kalianda
THE CORELATION OF PARENTAL COMMUNICATION BEHAVIOR TO SOCIAL MEDIA IN ADOLESCENTS IN CUKUH MUTUN HAMLET, SUAK VILLAGE RT01/RW03 SOUTH LAMPUNG
Authors: Uvilailati Zalna , Meliyana Ernauli , Ratnah I
Published: March 2024

As social beings, humans always carry out the process of communicating with one another intentionally or unintentionally. Communication has a very close relationship with social media because of social media, communication becomes faster and easier to do. Whether we realize it or not, the presence of new media, especially social media, has had a very big influence on human life, whether it is a good influence or a bad influence. The method used in this research is quantitative with a cross-sectional approach and purposive sampling. The population in this study were teenagers in Cukuh Mutun Hamlet Rt01/Rw03 Suak Village, South Lampung totaling 100 teenagers. With the results of the study obtained P of (0.000), so the conclusion is that there is a relationship between parental communication behavior on the use of social media in adolescents in Cukuh Mutun Hamlet Rt01/Rw03 Suak Village, South Lampung. Keywords: parental communication behavior, social media, adolescents
THE RELATIONSHIP BETWEEN PEER SUPPORT SYSTEM AND STRESS LEVEL OF WORKING ON A THESIS FOR S1 NURSING STUDENTS OF STIKES MEDISTRA INDONESIA IN 2023
Authors: Novi Pangestuti  , Puji Raharja Santosa  , Kiki Deniati
Published: March 2024

Final year students often experience stress with a undergraduate thesis, one of which is nursing students who are working on a undergraduate thesis. Support systems are people who have energetic and functional help have been shown to be healthier than people without support. Support system is about telling others that they are loved and cared for, that they have self-esteem and are valued both verbally and non-verbally.. Type of quantitative research with cross sectional method. Population with a total of 99 respondents. Sampling technique using random sampling sample. Based on the results  of chi-square  test analysis with a value of  p = 0.001  (p < 0.050) so that it is stated that H0 is rejected. Based on the results of statistical analysis using  the chi square test, it can be concluded that H0 is rejected, which means that there is a relationship between  peer support system and the stress level of doing a undergraduate thesis in S1 nursing students at STIKes Medistra Indonesia in 2023.
THE RELATIONSHIP BETWEEN ADOLESCENT SANTRI COPING STRATEGIES WITH THE STRESS LEVEL OF MEMORIZING THE QUR’AN AT THE TAHFIDZ AL-QUR’AN AR-ROHMANI BATUJAYA ASSEMBLY IN 2022
Authors: Kurniawan Agung Triaji , Nurti Y.K. Gea  , Hilda Meriyandah
Published: March 2024

The vulnerability of adolescent students with problems causes stress in the students caused by the obligation of the students to memorize the Qur'an, moreover, the age of the students who are still teenagers and the desire to memorize not all come from themselves, allowing these students to experience stress. Stress can be understood as pressure, a disorder that originates from within (internal) and outside (external) that is unpleasant. There are several factors that influence stress including anxiety, and participation in decision making. Therefore, a strategy is needed to overcome stressors, Each individual has a different coping strategy according to situational and individual. To determine the relationship between the coping strategies of adolescent students and the stress level of memorizing the Qur'an in the Tahfidz Al-Qur'an Ar-rohmani Batujaya Assembly.The research method uses a cross-sectional design. The sampling technique is total sampling, with a total of 50 respondents. The instrument used is a questionnaire. Based on data analysis used using the Chi Square Test with p = 0.00 (p < 0.05). The conclusion is that there is a relationship between the coping strategies of adolescent students and the stress level of memorizing the Qur'an in the Tahfidz Al-Qur'an Ar-rohmani Batujaya Assembly.there is a relationship between the coping strategy of adolescent students and the stress level of memorizing the Qur'an in the Tahfidz Al-Qur'an Ar-rohmani Batujaya Assembly.
The heterogeneous impact of oil price shocks on traditional and modern renewable energy in developed and developing countries
Authors: You Vithyea
Published: March 2024

The prevalence of renewable energy helps solve environmental problems and strengthens energy security with less dependence on nonrenewable energy, mainly fossil fuels. One important aspect is that renewable energy consists of two components: traditional and modern renewable energy. This paper examines the effects of an oil price shock on these two different types of renewable energy consumption by applying a local projection method to panel data from 147 countries during the period from 1993 to 2015. Our results show that the effects of an oil price shock depend on the development level and the dependence on nonrenewable energy. In highly nonrenewable energy-dependent countries, traditional renewable energy is sensitive to oil price changes, irrespective of their development levels. However, both traditional and modern renewable energy are insensitive to oil price changes in less nonrenewable energy-dependent countries, regardless of their development levels. Meanwhile, an oil price shock positively affects modern renewable energy in developed countries with high dependence on nonrenewable energy, but not in developing countries. These results provide important policy implications for policymakers and investors to foster modern renewable energy and call for balancing macroeconomic development with environmental benefits and costs.
The effect of bank credits on agricultural output in Nigeria: 1981–2019
Authors: Ugbede Junior Andrew , Nwankwo Odi
Published: March 2024

The agriculture sector of the Nigerian economy has suffered a severe setback, particularly after the advent of oil in mass production. The government shifted attention completely to the oil sector at the detriment of the agriculture sector, resulting in a practice of mono-economy. However, in recent times, the government has seen the need to diversify the economy to reduce its overdependence on the oil sector. Thus, both the bank and the government have been channeling resources to the sector to boast its productive capacity. Thus, this study seeks to investigate the impact of bank credit on the agriculture sector from 1981 to 2019. The data was subjected to a preliminary test—a unit root test—to ascertain the order of integration and subsequently the method of estimation. The unit root outcome shows a mixed order, which informed the adoption of the dynamic ARDL method. The finding from the estimation proved that the impact of bank credit on agriculture productivity in the long run is positive but weak. This suggests that bank credit to agriculture could not explain the variation in the performance of sectoral output. In contrast, the impact of government expenditure on the agriculture sector is strong and positive. This validates the significant contribution of government involvement to the revival of the sector. Thus, a recommendation is made of the need for banks to increase their credit and loan advances to the agriculture sector by lowering the interest charged on loans to the sector. Secondly, banks should give close monitoring to the funds loaned out to the agriculture sector to ensure the funds are truly channeled to the sector and not diverted. Moreso, the government can still do more for the sector to fully revive. More productivity-enhancing strategies, such as subsidizing modern farm equipment, seeds, and so on, can still be put in place by the government to help the sector regain its lost glory.
Pro-market reforms and firm performance
Authors: Deng Bohao , Abdul Qadeer , Jiang Xu
Published: March 2024

Empirical findings from prior research regarding the impact of pro-market reforms on firm performance have been mixed and ambiguous. The primary objective of this study is to conduct a systematic literature review to investigate how pro-market reforms affect firm performance. We summarize the possible factors that led to the mixed findings and provide suggestions for future research.
The contributions of corporate social responsibility in textile and apparel industry toward consumers’ purchase intention: Perceived quality and corporate image as mediators
Authors: Cheng Yan , Zhao Yan , Zhao Yu
Published: March 2024

Corporate Social Responsibility (CSR) plays a pivotal role in the development of enterprises and entire industries, serving as a communication bridge between business organizations and consumers. Grounded in the Theory of Reasoned Action (TRA), this study aims to investigate the contribution of CSR in the textile and apparel industry to consumers’ purchase intentions, with perceived quality and corporate image as mediators. To achieve this objective, the study first formulates hypotheses and a theoretical model based on relevant works. Subsequently, through an extensive review of literature and interview surveys, key indicators for CSR, perceived quality, corporate image, and purchase intention are identified, along with their corresponding scales. These scales are then distributed to consumers to collect questionnaire data, which is further integrated into a stepwise regression model and mediating model to test the theoretical model. The results provide insights into the contribution of various dimensions of CSR to consumers’ purchase intentions and validate the role of perceived quality and corporate image as mediators. There are two contributions to this work: (1) unveiling the important role of perceived quality and corporate image in connecting CSR and consumers’ purchase intention, offering a novel theoretical framework for the study of sustainable development in the textile and apparel industry and other industries or settings. (2) furnishing the textile and apparel industry with insights to better comprehend and respond to the relationship between CSR, perceived quality, and purchase intention, thereby achieving more substantial economic and social benefits.
“Music of Sound”: Using Existing Sonic Environments to Develop Inclusive, Experiential, and Collaborative Pedagogy in Malaysia
Authors: Beng Tan Sooi , Chee Toh Lai
Published: March 2024

Music of Sound (MOS) pedagogy promotes the learning of musical concepts and creative expression using everyday objects, body parts, and one’s voice. The authors discuss the experiential, collaborative, and place-based approaches they have developed in MOS projects for schoolchildren of different ethnic, religious, and social backgrounds in Malaysia over the last two decades. Ensemble work in skill training, field research, and collective composition resulting in site-specific workshop performances enhances interethnic cohesion among children. Tertiary students who are involved in facilitation experience multiple kinds of musical knowledge and the potential of collaborating with multiethnic communities of practice.
Practising Cultural Inclusivity During the Pandemic: A Case Study of an Online Composition Course in Canada
Authors: Xia Jing
Published: March 2024

The PhoeNX Ensemble-Memorial University composition course offers a case study of university-level pedagogical, intercultural music-making and its potential to engage the question of how music education can help to address existing racial and cultural tensions in society. During the course, racial and cultural concerns surfaced when participants negotiated their individual positionalities. An analysis of the multifaceted interactions demonstrates how this composition course exemplifies a meaningful and valuable path toward inclusive and anti-racist pedagogy in the Canadian classroom. Such approaches can address cultural misunderstanding and social injustice in the university context.
Stratégies pour une pédagogie alternative de l’histoire de la musique : trois études de cas autour de rencontres interculturelles
Authors: P. Bouliane Sandria , Pearse D. Linda
Published: March 2024

Cet article revisite trois moments de l’histoire de la musique européenne occidentale en intégrant des perspectives qui rendent compte des mouvements globaux de la musique et des activités et impacts des individus marginalisés ou racisés. À travers trois études de cas situées aux xie et xvie siècles, l’article met en lumière des rencontres interculturelles, des dynamiques de pouvoir et des identités fluides en proposant des outils et des activités pédagogiques adaptés à l’enseignement de l’histoire de la musique européenne au niveau postsecondaire. Notre objectif est de révéler la complexité et la pluralité de l’identité ethnique et sociale dans la musique classique européenne, contribuant ainsi à une compréhension et à un enseignement plus nuancés de son histoire.
Social cognitive career theory and higher education students’ entrepreneurial intention: The role of perceived educational support and perceived entrepreneurial opportunity
Authors:   Ph.D., Associate Professor, National Economics University, 207 Giai Phong Street, Hai Ba Trung, Hanoi, Vietnam, e-mail: doanhdc@neu.edu.vn, Doanh Duong Cong , Trang Tran Van ,   Ph.D., Associate Professor, Thuongmai University, 79 Ho Tung Mau Street, Cau Giay, Hanoi, Vietnam; email: tranvotrang@tmu.edu.vn. Corresponding author, St-Jean Étienne ,   Ph.D., Professor, Research Institute on SMEs, Université du Québec à Trois-Rivières, 3351, Boulevard des Forges, Trois-Rivières (Québec), Canada, email: Etienne.St-Jean@uqtr.ca
Published: March 2024

PURPOSE: This study aims to integrate insights from the Socio-Cognitive Career Theory (SCCT) and entrepreneurship literature to develop a research framework of how perceived entrepreneurial opportunities (PEO) and perceived educational support (PES) shape the progression of entrepreneurial self-efficacy (ESE) and entrepreneurial career interests (ECI). Additionally, this study investigates whether ECI mediates the effects of PEO and PES on entrepreneurial intention (EI) and how PEO and PES moderate the effects of ESE and ECI on EI. METHODOLOGY: A sample of 888 university students was recruited from Vietnam. Cronbach’s alpha and confirmatory factor analyses were adopted to test the reliability and validity of the scales. Structural equation modeling (SEM) is then used to test formulated hypotheses. FINDINGS: The current study demonstrates that ESE and ECI directly trigger EI. Although PES and PEO did not directly impact EI, their influence on EI was mediated through ESE and ECI. In addition, PEO was found to act as a positive catalyst for the transformation of ESE and ECI into EI. The greater the entrepreneurial opportunities students perceive, the more likely they are to convert ESE and ECI into intentions to become entrepreneurs. IMPLICATIONS: This study makes a significant contribution by emphasizing the relevance of the SCCT framework in understanding entrepreneurship and brings to the forefront the role of PES and PEO in shaping the progression of ESE, ECI and, ultimately, EI. In addition, the findings of this study provide practical implications for nascent entrepreneurs, entrepreneurship educators, and policymakers. ORIGINALITY AND VALUE: This study is one of the first to investigate the role of PEO and PES in the development of Vietnamese students’ SES, ECI and, ultimately, their intention to engage in entrepreneurship.
Prolactin-mediates a lactation-induced suppression of arcuate kisspeptin neuronal activity necessary for lactational infertility in mice
Authors: Hackwell Eleni , Ladyman Sharon R , Clarkson Jenny , McQullian H James , Boehm Ulrich , Herbison Allan Edward , Brown Rosemary , Grattan David R
Published: March 2024

The specific role that prolactin plays in lactational infertility, as distinct from other suckling or metabolic cues, remains unresolved. Here, deletion of the prolactin receptor (Prlr) from forebrain neurons or arcuate kisspeptin neurons resulted in failure to maintain normal lactation-induced suppression of estrous cycles. Kisspeptin immunoreactivity and pulsatile LH secretion were increased in these mice, even in the presence of ongoing suckling stimulation and lactation. GCaMP fibre photometry of arcuate kisspeptin neurons revealed that the normal episodic activity of these neurons is rapidly suppressed in pregnancy and this was maintained throughout early lactation. Deletion of Prlr from arcuate kisspeptin neurons resulted in early reactivation of episodic activity of kisspeptin neurons prior to a premature return of reproductive cycles in early lactation. These observations show dynamic variation in arcuate kisspeptin neuronal activity associated with the hormonal changes of pregnancy and lactation, and provide direct evidence that prolactin action on arcuate kisspeptin neurons is necessary for suppressing fertility during lactation in mice.
Identificación automática de maleza con redes neuronales siamesas
Authors:   , Calderara Cea Felipe Antonio
Published: March 2024

La aparición de plantas que compiten con un cultivo afecta a su productividad y, por tanto, su erradicación constituye un foco de esfuerzo considerable. Se han desarrollado técnicas de agricultura de precisión para minimizar el uso de agentes químicos potencialmente dañinos y costosos, identificando la presencia de plantas no deseadas mediante sensores electrónicos (generalmente cámaras RGB). Los métodos tradicionales de esta área se basan en el uso de análisis de textura y color de los objetos dentro del espacio de una imagen basados en las relaciones matemáticas entre los píxeles, sin embargo estos métodos pueden llevar un sesgo humano en la selección de dichas características. Un nuevo conjunto de enfoques para la detección de plantas competidoras (y la identificación de objetos en su conjunto) que se ha convertido en el estandar de la industria en los últimos años son los basados en redes neuronales convolucionales (CNN), con el inconveniente de la necesidad de contar con amplios conjuntos de datos para evitar una mala generalización. Este trabajo presenta un enfoque novedoso en dos aspectos: que el clasificador principal para asignar la presencia de plantas no deseadas se entrenó utilizando un enfoque de aprendizaje de one-shot-learning, limitando así la necesidad de un mayor conjunto de imágenes, y en que se utiliza un segundo modelo para la construcción de un mapa de pıxeles detallado para las especies de plantas con geometría menos contenida. Los resultados del algoritmo obtenido son comparables al estado del arte, con una cifra de accuracy promedio del 97.16%, así como una balanced accuracy promedio del 89.94%, al mismo tiempo que ofrecen una solución fácilmente adaptable a diferentes especies de cultivos y malezas.
The activities of uroporphyrinogen synthetase and cosynthetase in congenital erythropoietic porphyria (cep)
Authors: Miyagi Ken , Petryka Z. J. , Bossenmaier Irene , Cardinal Ruth , Watson C. J.
Published: February 2007

Normal or increased amounts of series III porphyrins with greater amounts of series I were observed on incubation of PBG in hemolysates of congenital erythropoietic porphyria vs. normal erythrocytes, human or bovine. Correlation with reticulocyte percentage was poor, in the aggregate a general trend toward increased values of both isomers I and III was noted with increasing reticulocytes. When the percent of type III was low the net amount was increased as compared with normal. Hemolysates of non‐porphyric, reticulocyte‐rich red cells (hemolytic or posthemorrhagic anemia) formed only minute amounts of type I porphyrin but at the same time no more, or even less type III than the porphyric hemolysates, although representing red cells of greater reticulocyte content. No evidence of deficient heme synthesis was observed in porphyric hemolysates incubated with [14 C] ‐porphobilinogen or 59Fe. Other studies of porphyric hemolysates incubated with and without added mouse spleen synthetase failed to reveal evidence of an absolute UPG‐III cosynthetase (Co‐S) deficiency. The large increases of type I porphyrin with normal or increased formation of type III, both in the disease and in the hemolysates, are believed due to a primary increase of ALA‐S or UPG‐S activity rather than a decrease of Co‐S. Possible mutations which might be responsible for this increase are considered.
Sickle β‐thalassemia: Identical twins differing in severity implicate nongenetic factors influencing course
Authors: Joishy Suresh K. , Griner Paul F. , Rowley Peter T.
Published: February 2007

25‐yr old female identical twins of Italian‐American origin concordant for sickle β‐thalassemia were studied to explain their clinical differences. One of them has been severely affected from childhood with one aplastic crisis, an earlier onset of vaso‐occlusive crises, and recent cardiac decompensation; the other twin shows no cardiac decompensation.

Similar are their degree of anemia, RBC indices, blood volumes, absence of splenic sequestration, depression of pO2, elevation of p50 and 2,3‐DPG, hemoglobin composition, and peripheral blood globin‐synthetic rates.

Regarding differences, the more severely affected has a shorter 51 Cr RBC life span, a greater menstrual blood loss, and is more overweight, whereas the less severely affected has functional asplenia by 99mTc scanning and a larger proportion of RBC with decreased cellular deformability.

We conclude that in sickle β‐thalassemia: (1) genotype alone does not determine the clinical course; (2) significant differences in clinical course can occur with almost identical hemoglobin composition and globin synthetic rates; (3) cellular deformability changes do not correlate exactly with clinical course; and (4) functional asplenia and leanness may be advantageous.
Identification of cells in culture
Authors: Stulberg C. S. , Peterson W. D. , Simpson W. F.
Published: February 2007

Most laboratories using cells cultured in vitro maintain multiple cell lines. Such lines should be monitored for species and intraspecies characteristics to prevent invalidation of research work due to incidents of cell line cross‐contamination.

This report describes the results obtained when 246 cell cultures were examined for evidence of cross‐contamination or mislabeling. Using species‐specific antigens, isoenzyme electrophoresis, and chromosomes as markers of identity, 14% of the cultures submitted were found to be contaminated by cells of another species. Of human cell lines submitted 25% were of HeLa cell origin, as determined by 2 intraspecies markers, glucose‐6‐phosphate dehydrogenase and chromosome analyses. The fact that, overall, nearly 30% of the cell lines examined were incorrectly designated makes the importance of cell line monitoring self‐evident.
A prophylactic transfusion program for children with sickle cell anemia complicated by CNS infarction
Authors: Lusher Jeanne M. , Haghighat Hushang , Khalifa A. Samy
Published: February 2007

CNS infarction is a devastating complication in sickle cell anemia. Episodes are frequently repetitive and often result in permanent neurologic abnormalities. In an attempt to prevent such recurences a periodic transfusion program was begun at the Children's Hospital of Michigan in 1969. Twenty‐one children currently on the program receive buffy‐coat poor transfusions on an out‐patient basis every 3 weeks. Of 15 who have been on the program for periods of from 9 months to 5 ¾ years, none have had progression of neurologic abnormalities, and several have had definite improvement in neurologic function. One child who was not brought in regularly had recurrent CNS infarction. The only recognized complication has been one instance of serum hepatitis. While such a transfusion of neurologic abnormalities resulting from recurrent CNS infarction in sickle cell anemia.
Two new glucose 6‐phosphate dehydrogenase variants associated with congenital nonspherocytic hemolytic anemia found in Japan: Gd(‐) tokushima and gd(‐) tokyo
Authors: Miwa Shiro , Ono Junichiro , Nakashima Koji , Abe Shigenobu , Kageoka Takeshi , Shinohara Kenji , Isobe Junichi , Yamaguchi Hisomu
Published: February 2007

Two new variants of glucose 6‐phosphate dehydrogenase (G6PD) deficiency associated with chronic nonspherocytic hemolytic anemia were discovered in Japan. Gd(‐) Tokushima was found in a 17‐year‐old male whose erythrocytes contained 4.4% of normal enzyme activity. Partially purified enzyme revealed a main band of normal electrophoretic mobility with additional two minor bands of different mobility; normal Km G6P, and Km NADP five‐ to sixfold higher than normal; normal utilization of 2‐deoxy‐G6P, galactose‐6P, and deamino‐NADP; marked thermal instability; a normal pH curve; and normal Ki NADPH. The hemolytic anemia was moderate to severe. Gd(‐) Tokyo was characterized from a 15‐year‐old male who had chronic nonspherocytic hemolytic anemia of mild degree. The erythrocytes contained 3% of normal enzyme activity, and partially purified enzyme revealed slow electrophoretic mobility (90% of normal for both a tris‐hydrochloride buffer system and a tris‐EDTA‐borate buffer system, and 70% of normal for a phosphate buffer system); normal Km G6P and Km NADP; normal utilization of 2‐deoxy‐G6P, galactose‐6P, and deamino‐NADP; greatly increased thermal instability; a normal pH curve; and normal Ki NADPH. These two variants are clearly different from hitherto described G6PD variants, including the Japanese variants Gd(‐) Heian and Gd(‐) Kyoto. The mothers of both Gd(‐) Tokushima and Gd(‐) Tokyo were found to be heterozygote by an ascorbate‐cyanide test.
Effect of antiserum on transplantable hematopoietic colony‐forming units during rauscher leukemia development
Authors: Okunewick J. P. , Phillips E. L. , Brozovich B.
Published: February 2007

Studies have been carried out to determine the sensitivity of hematopoietic CFU‐S from Rauscher leukemic mice to an antiserum against the disease prepared in syngeneic mice. Test of this antiserum against Rauscher virus prior to injection showed it to be effective both in vitro and in vivo. At the same time, normal serum was shown to be without effect either against the CFU‐S or against the virus. Spleen CFU‐S were obtained from control and leukemic mice over a sequence of days following Rauscher virus injection and assayed by transplantation technique. Prior to transplantation these were incubated in vitro in either normal syngeneic serum or syngeneic antiserum. Incubation with antiserum had no effect on CFU‐S obtained from the spleens of normal mice. However, incubation in this antiserum of spleen CFU‐S from Rauscher leukemic mice resulted in a reduction of up to 50% in their colony‐forming ability. Additional tests with guinea pig complement suggested that the levels of inactivation seen are not complement limited. This antiserum‐induced reduction in colony formation was first evident in the second week after the injection of virus, coincident with the onset of splenomegaly in the leukemic mice. Thereafter, sensitivity of CFU‐S to the antiserum could be detected up to the terminal point of the leukemia (44 days).
Evaluation of survival data for chronic myelocytic leukemia
Authors: Sokal Joseph E.
Published: February 2007

Median survival figures are essentially worthless for evaluation of the effectiveness of therapy in different series of patients with chronic myelocytic leukemia. Such data are heavily influenced by the characteristics of the initial patient mix, which play the major role in determining mortality during the first year of treatment. The effects of differing initial proportions of poor‐risk patients are dissipated within two years, however, and the annual mortality rates thereafter reflect the influence of antileukemic therapy. Comparison of these rates, from very diverse series of patients, yielded quite consistent results and indicated superiority of effective chemotherapy over irradiation or inferior drug schedules.
Sickle cell anemia: Erythrokinetics, blood volumes, and a study of possible determinants of severity
Authors: Steinberg Martin H. , Dreiling Bernard J.
Published: February 2007

The variability in the clinical expression of sickle cell anemia led us to study factors which might influence the course of this disease. We examined erythrokinetics, blood volumes, and variables which influence hemoglobin function in a group of adults with sickle cell anemia of varying degrees of clinical severity. We were unable to correlate any single measurement with the clinical course; however, our patient sample was small and the data suggested areas for further study. An expansion of plasma volume was noted in all patients. This made it difficult to predict red cell mass from the hemoglobin level, which consistently underestimated its magnitude. The red cell production index and iron turnover values indicated that there is often a suboptimal erythropoietic response to anemia in sickle cell disease.
Effect of prior radiotherapy on tolerance and response to chemotherapy in non‐hodgkin's lymphoma
Authors: Bender Richard A. , Johnson Bonny L. , Norton Larry , Young Robert C.
Published: February 2007

Twenty‐five patients who had received radiotherapy as their primary treatment for non‐Hodgkin's lymphoma subsequently relapsed; they were then treated with combination chemotherapy and their tolerance and response evaluated. Radiotherapy delivered as total body irradiation and other forms of radiotherapy delivered to > 15% of the bone marrow caused significantly lower platelet nadirs during subsequent chemotherapy when compared to patients receiving radiotherapy to ≤ 15% of their bone marrow. In spite of this thrombocytopenic effect, the eventual total doses of chemotherapy delivered were not significantly compromised. A response to chemotherapy was more likely in patients with a prolonged (> 6 months) response to radiotherapy. However, a chemotherapy response was equally likely in patients receiving involved field (IF), extended field (EF), or total nodal irradiation (TNI) as compared to those receiving total body irradiation (TBI). Chemotherapy responses (complete and partial) occurred in 75% of both radiotherapy groups with complete responses more likely in the IF, EF, or TNI group. The median durations of response were slightly longer in the IF, EF, or TNI radiotherapy group (6 months vs 5 months; p = 0.07) but were shorter than those in previously reported patients not receiving prior radiotherapy. Similarly the duration of a chemotherapy response was not affected by the histology of the tumor. However, although the survival of patients following chemotherapy was not significantly affected by the histology of the tumor there was a tendency towards a longer survival for lymphocytic histology as compared to histiocytic.
The anemia of vitamin E deficiency in swine: An experimental model of the human congenital dyserythropoietic anemias
Authors: Lynch R. E. , Hammar S. P. , Lee G. R. , Cartwright G. E.
Published: February 2007

The ultrastructural and erythrokinetic characteristics of vitamin E deficiency in swine were investigated in an effort to evaluate the suitability of the swine disorder as a model of the human congenital dyserythropoietic anemias. The dominant erythrokinetic abnormality in vitamin E deficient pigs, as in the CDAs, is ineffective erythropoiesis. As in some patients with CDA, the activity of a number of erythrocyte enzymes was increased. Distinctive ultrastructual changes previously described in patients with CDA were found in normoblasts from vitamin E deficient pigs. The morphologic, erythrokinetic, biochemical and ultrastructural similarities between vitamin E deficiency in swine and the CDAs in man appear to justify the study of the animal disorder as a model of the human disease.

A complete hematologic response was elicited by the administration not only of vitamin E, but also, as in the previous studies of vitamin E deficiency in monkeys, by hexahydrocoenzyme Q4. The partial hematologic response occurring after deletion of tocopherol stripped corn oil from the diet indicates that factors other than the dietary lack of vitamin E are important in the pathogenesis of this disorder.