bluuebunny/crossref_metadata_2025 huggingface dataset:
Cuarto de siglo - ENICIP 1989-2013
Authors: Ossa Jorge
Published: August 2024

Mil gracias por la invitación a reflexionar sobre el Encuentro Nacional de Investigadores de las Ciencias Pecuarias con ocasión de su cuarto de siglo de existencia Ningún hecho importante ocurre en un vacío contextual ¿qué pudiéramos decir entonces del ENICIP? ¿Cuál fue ese contexto? Lo primero que se agolpa en la mente al tratar de dar respuesta a esta pregunta es la formación parcializada que recibimos en el pasado -y que infortunadamente siguen recibiendo nuestros hijos y nietos en el presente- lo que nos impide ver la realidad con los lentes del historiador, del sociólogo, del político en fin, nos imposibilita hacer la síntesis de lo que hemos vivido.
Políticas actuales de sostenibilidad y competitividad de la ganadería en México
Authors: Puente González Arturo
Published: August 2024

Summary Current livestock value of output in Mexico stands at USD 30 billion, of which 58.7% is intermediate consumption and 41.3% value-added. During 2003-2011, livestock value-added grew at 2.46% annually, higher than in both economy and agriculture. In the last 20 years, poultry meat production has kept a dynamic growth, while growth in beef production has been moderate. Pork production has decreased continuously since the mid-1990s, to a great extent due to competition from cheaper and massive imports from the United States. In the last 10 years, Mexico has begun to increase and diversify its meat exports, mainly beef; however, a large trade deficit of nearly USD 3.2 billion annually, persists. Mexico's livestock value-added has the potential to continue growing at least at 2.5% per year, but requires wide-ranging policies to increase and consolidate both its productivity and competitiveness in the long term. Key words: economic growth, livestock production, Mexico, policies, trade.   Resumen  El valor de la producción ganadera en México es de 30 mil millones de dólares, del cual el 58,7% corresponde al consumo intermedio y el 41,3% al valor agregado. En el período 2003-2011, el crecimiento del valor agregado de la Ganadería fue de 2,46%, superior al de la Economía y superior al del Sector Primario. En los últimos 20 años, la producción de carne de pollo ha mantenido un crecimiento dinámico, mientras que la producción de carne de bovino ha mostrado un crecimiento moderado. La producción de carne de porcino ha disminuido continuamente desde mediados de los noventas, en gran medida debido a la competencia con las masivas importaciones de esa carne proveniente de los Estados Unidos. En los últimos 10 años empiezan a aumentar y a diversificarse las exportaciones de carne, principalmente la de carne de bovino, sin embargo se ha mantenido un gran déficit comercial de productos pecuarios con el exterior, de alrededor de los 3200 millones de dólares anuales. La ganadería de México tiene el potencial para continuar con un crecimiento de al menos 2,5% anual, pero se requieren de políticas de gran alcance para aumentar y consolidar su productividad y competitividad en el largo plazo. Palabras clave: comercio, crecimiento económico, México, políticas, producción ganadería.
Estrous behavior, ovulatory follicle dynamics, and corpus luteum size in Creole cows after spontaneous or prostaglandin F2α-induced estrous
Authors: Quezada Casasola Andrés , Avendaño Reyes Leonel , Macías Cruz Ulises , Ramírez Godínez José A , Rivas Cáceres Raymundo R
Published: August 2024

Background: evaluation of reproductive behavior in Creole cows is important to determine several parameters, such as fertility, that show the physiologic reproductive mechanisms under different conditions. Therefore, the sequence of events such as ovulation and the subsequent formation of a corpus luteum need tobe considered to establish genetic improvement programs under synchronized or naturally-occurring estrous conditions. Objective: to evaluate the ovarian and behavioral estrous characteristics before, during and after prostaglandin F2α-induced or naturally occurring estrous in Creole cows. Methods: thirty Creole cows were subjected to estrous synchronization with PGF2α and observed continuously over five days to determine estrous onset and duration. Seventeen days after synchronized estrous detection, cows were observed during seven d to detect the naturally-occurring estrous and its duration. After the onset of both types of estrous the ovaries of each cow were ultrasounded every 8 h to determine diameter of the preovulatory follicle at deviation and its maximum diameter prior to ovulation, as well as its growth rate, time to ovulation and maximum diameter of the later corpus luteum. Results: time of appearance and duration of synchronized and spontaneous estrous were similar (p>0.1). Diameters of the dominant follicle at deviation and prior to ovulation were similar in both types of estrous. Nevertheless, growth rate (mm/d) of the preovulatory follicle was higher (p < 0.05) in synchronized estrous. However, time from onset of synchronized estrous to ovulation was longer (p < 0.01).Diameter of corpus luteum 10 d after ovulation was similar in both types of estrous. Results indicate that growth rate of follicle and time from synchronized or spontaneous estrous to ovulation must be considered for estrous cycle manipulation and artificial insemination of Creole cows. Conclusion: a higher proportion of Creole cows show heat during nighttime, growth rate of ovulatory follicle is higher during synchronized estrous, and time from onset of synchronized estrous to ovulation is longer, when compared with spontaneous estrous.
Insemination of bocachico fish (Prochilodus magdalenae) with fresh or cryopreserved semen: effect of spermatozoa/oocyte ratio
Authors: Atencio García Víctor J , Espinosa José A , Martínez José G , Pardo Carrasco Sandra C
Published: August 2024

Background: cryopreservation is an important biotechnological tool in the conservation of biodiversity, particularly for endangered species. Objective: to evaluate six different spermatozoa/oocyte ratios using fresh and cryopreserved semen in bocachico fish (Prochilodus magdalenae). Methods: fresh semen was collected and its quality determined to verify cryopreservation feasibility. The semen was put in 5 ml straws and mixed with a solution (5.5% glucose, 12% egg yolk, and 10% dimethyl sulfoxide -DMSO-) in a 1:4 dilution (semen:solution). The semen was frozen in nitrogen vapor dry shipper for 30 min, rapidly transferred to storage thermos, and submerged directly into liquid nitrogen (LN; -196 °C). Straws were thawed at 60 ºC for 45 seconds. Motility, velocity, and sperm progressivity of fresh and cryopreserved semen were assessed using Sperm Class Analyzer (SCA®) software. Each proportion of spermatozoa/oocyte was assessed with 2 g of eggs (1,630 ± 87 eggs/g) to evaluate fertility (F), hatching (H), and larval survival (LS) rates. Results: the best reproductive performance for fresh semen was obtained inseminating with 160,000 spermatozoa/oocyte (F = 75.0%, H = 67.7%, LS = 32.7%). Similarly, the best reproductive performance for cryopreserved semen was achieved with 320,000 spermatozoa/oocyte (F = 70.0%, H = 48.6%, LS = 19.5%). Conclusion: it is possible to achieve adequate reproductive performance in bocachico fish using cryopreserved sperm (10% DMSO, 5.5% glucose, and 12% egg yolk) at twice the spermatozoa/oocyte ratio used with fresh semen.
A Study on the International Research Trend of Port Logistics: Application of Natural Language Processing
Authors:   Korean Academy Of International Commerce, Inc., Oh Jin-Ho , Lee Ja-Yeon
Published: August 2024

Purpose: This study collected and analyzed trends in port logistics research conducted abroad. The trend analysis results were compared with the trends in domestic port and port logistics research to examine the similarities and differences.
Research design, data, and methodology: The analysis methods used are SLNA and NLP in parallel. The analysis period covered the literature on port logistics conducted abroad from 2000 to 2019. The literature was limited to peer-reviewed articles, conference papers, and review articles. One thousand and nineteen international documents were collected and finally classified. NLP analysis was conducted using the abstract data from these 1,019 documents.
Results: The analysis revealed the top keywords: Container, Model, Development, Cost, Transport, Efficiency, and Maritime. The keywords related to economic studies, such as container terminals, models, and costs, were among the top keywords. The key research topics were analyzed through LDA analysis. The core research topics in international port logistics studies were identified as ‘port performance,’ ‘port issue,’ ‘port operation,’ ‘cargo transportation,’ ‘regional economy,’ and ‘port and shipping strategies.’ A comparison of domestic and international studies found that many foreign studies were conducted from an econometric perspective.
Conclusions: Keywords, such as port performance and port operations, were actively studied in domestic and international port research.
Study on Improving the Volume Incentive System of Incheon Port for the Growth of MultiValue Ports
Authors:   Korean Academy Of International Commerce, Inc., Park Won-Geun , Shin Dong-Chan , Kang Dong-Yoon
Published: August 2024

Purpose : In order for Incheon Port to grow into a complex value port, this study intends to propose ways to strengthen the feedback function of the incentive system from a long-term perspective, flexibly manipulate strategic area incentives, and support Sea&Air multimodal transportation through the analysis of the current status and effectiveness of Incheon Port's volume incentives.
Research design, data and methodology : This thesis adopted a literary focused research method. In order to deal with the contents determined by the scope of the study, a theoretical approach targeting the current status of domestic and foreign port incentives, support systems, and related theses was used.
Results : Effect analysis showed that incentive systems influenced the decision of port users regarding which port to use. Each port user was found to have a very positive perception of the financial effects of offsetting future logistics costs through port incentive systems.
Conclusions : As an improvement plan, first, it seems necessary to strengthen the feedback function of the incentive system. Second, flexible adjustments of incentives in strategic areas are needed. Third, Sea&Air incentives must be improved. Fourth, there may be need for review of incentive system standardization.
Impact of Regulations and Government Factors in the Importing Country on the Verification of the Country of Origin
Authors:   Korean Academy Of International Commerce, Inc., Kim Chang-Bong , Hwang Jae-Eun
Published: August 2024

Purpose: This study aimed to empirically analyze how the institutional quality of importing countries affects the trade facilitation of domestic exporting companies.
Research design, data, and methodology: This study first distributed questionnaires and collected responses from domestic exporting companies listed by KOTRA, KITA, and those participating in relevant training programs. Subsequently, the indices from the WGI of the World Bank were used to assess the regulatory strictness and government trustworthiness of the export destination countries. Poisson regression analysis was conducted using STATA 17 SE based on the collected data.
Results: The analysis indicated that regulatory strictness increases the frequency of origin verification, while government trustworthiness decreases the frequency of origin verification. The moderating effect of export experience mitigates the impact of regulatory strictness but does not affect government trustworthiness.
Conclusions: Companies should understand the regulations and characteristics of the importing country's government to reduce the factors that hinder trade facilitation and promote trade. In addition, gaining diverse export experience can help mitigate the impact of regulatory strictness.
Study on the Impact of Packaging Design Elements and Perceived Value of Sugar-Free Tea Beverages on Consumer Purchasing Behavior
Authors:   Korean Academy Of International Commerce, Inc., Ding Ning , Yun Kyong-Jun , Chen Maowei
Published: August 2024

Purpose: This study aimed to assist brands in understanding market trends and consumer expectations accurately and guide targeted adjustments and innovations in the packaging design of sugar-free tea.
Research design, data, and methodology: This study conducted an online survey of mainland Chinese consumers from May 5 to 14, 2024, collecting 412 valid responses. SPSS 26.0 and AMOS 23.0 were used for data analysis and structural equation modeling.
Results: According to the study, among the packaging design elements and perceived value dimensions of sugar-free tea, information clarity, and cultural value were the most influential, while visual aesthetics and health value had the least impact. In addition, satisfaction was found to mediate the relationship between packaging design, perceived value, and purchasing behavior.
Conclusions: Compared to the elegant and sophisticated designs, eco-friendly packaging that is clear in information and incorporates cultural elements, health concepts, and emotional factors significantly enhances consumer satisfaction, promoting purchasing behavior.
Aerodynamic Investigation of Shrouded Rotors with Dual Exit Channels
Authors: Dayhoum Abdallah , Ramirez-Serrano Alejandro , Martinuzzi Robert
Published: August 2024

The growing need for rotary-wing aerial vehicles with high-speed forward movement and dependable hover performance is critical in various applications. Shrouded rotors enhance aerodynamic performance, create more overall thrust with the same power consumption as open rotors, and have a more uniform induced velocity flow field. This paper presents a parametric computational investigation centered on the hypothesis, that dividing the shroud exit channel into convergent inner and divergent outer channels would enhance flow uniformity, reducing power losses, and preventing airflow separation from the main shroud’s inner walls. The validity of this hypothesized concept is demonstrated through extensive Computational Fluid Dynamic (CFD) simulations. The paper includes a case analysis utilizing experimental data from a highly- maneuverable drone, named Navig8, equipped with a 9-inch shrouded propeller where various shrouded configurations are examined using Computational Fluid Dynamics. Results typically show an increase in total thrust with the incorporation of an inner shroud for a given power.
Um olhar além do concreto: Formação Humana Mediada por Tecnologia para a Saúde no Sistema Prisional
Authors: Ferla Alcindo Antônio , Dias Aline de Pinho , Melo Ronaldo , Trindade Sara Dias , Kodjaoglanian Vera Lúcia
Published: August 2024

Este livro: UM OLHAR ALÉM DO CONCRETO: Formação Humana Mediada por Tecnologia para a Saúde no Sistema Prisional é fruto do trabalho da Pesquisadora e Doutora, Janaína Rodrigues, que mergulhou em uma imersão no Sistema Prisional Brasileiro para produzir a Trilha Formativa: “Além dos Muros”. Neste trabalho a sua pesquisa aponta que para haver uma intervenção eficaz em grande escala na saúde prisional é preciso considerar a tríade do Sistema Prisional, ou seja, o policial penal, o privado de liberdade e o profissional de saúde. Para a autora, o que a motivou foi : “A oportunidade de transformar as vidas de pessoas que estão no ambiente do cárcere. Dar voz a elas, garantir os seus direitos e mostrar que a qualidade de vida delas repercute também na sociedade, foi de fundamental importância para o sucesso deste trabalho. Esse é um movimento que tem impactos sociais relevantes, e contribui com os Objetivos de Desenvolvimento Sustentável (ODS) da Agenda 2030 da Organização das Nações Unidas (ONU), da qual o Brasil é signatário.”
Addressing Challenges of Postsecondary Disability Service Provision: A System-Wide Approach
Authors: Lindstrom Will , Harold Michele , Ballenger Sheryl , Rempel Johan , Linek Kim
Published: August 2024

Over the past 25 years, substantial legal changes, research advances, and rapidly developing technology have resulted in dramatic changes in the postsecondary disability landscape. As a result, disability service professionals have seen their job duties significantly expand while serving a rapidly increasing and diversifying postsecondary population with disabilities. The current study details the relevant developments of the past 25 years, reviews literature documenting emerging challenges, and provides a case study of the system-wide approach developed by the University System of Georgia to support its disability service professionals during this period of rapid evolution. The services and supports provided by the three independent components (i.e., the Regents Centers for Learning Disorders, the Center for Inclusive Design and Innovation, and the Regents' Administrative Committee on Accessibility and Disability Services) are described. In addition, the authors describe how the components work in a collaborative way to leverage the benefits of a multidisciplinary approach. The authors close by describing how system-wide approaches or aspects of the University System of Georgia approach could be adopted in other states and settings.
On the Many Terms for Developmental Language and Learning Impairments
Authors: Archibald Lisa
Published: August 2024

The terms Language Disorder, Developmental Language Disorder (DLD), Language-based learning disabilities, Specific Learning Disorder, and Specific Learning Disability are commonly used to describe children struggling to learn at school. In this position paper, the definitions and distinctions between these terms are discussed, and key overlaps and differences described. Although often used interchangeably, Specific Learning Disorder and Specific Learning Disability are not synonymous. Based on current definitions, DLD and Specific Learning Disorder are related to Specific Learning Disability in the same way. In educational settings, children with DLD may additionally be identified using terms such as Language Impairment, Speech, Language, Communication Needs (SLCN), and others. Despite the problematic overlap in the names Specific Learning Disorder and Specific Learning Disability, one advantage of the latter term is the acknowledgment that many skills underlying academic learning are language-based, thereby capturing the disability experienced by children with language or academic learning disorders.
Information Security Management System Practices in Kenya
Authors: Mwangi Chege Stanley
Published: August 2024

This research analyzes international standards and frameworks that support organizations in Kenya in building, implementing, maintaining, and enhancing their ISMS (ISMS). Security risks are increasingly complex, and this study outlines best practices for managing those risks. A case study approach is applied to investigate the use of ISMS frameworks within Kenyan organizations. Through analyzing relevant literature and Kenyan organizations, the study identifies key practices, insights, frameworks, and their practical applications. There is a relation between an effective ISMS and business performance.
Macro-Nutrient Prediction of Paddy Field Soil Using Artificial Neural Network and NIR Spectroscopy
Authors: Firdaus Jonni , Ahmad Usman , Budiastra I Wayan , Subrata I Dewa Made
Published: August 2024

Understanding soil fertility, influenced by macronutrients like nitrogen, phosphorus, and potassium, is essential for adaptive agriculture implementation based on various soil conditions. Near-infrared spectroscopy technology provides non-destructive, rapid soil property measurements without chemicals, applicable both in-field and in-laboratory. However, the wide NIR spectrum range and neural network complexities can hinder Artificial Neural Network (ANN) training and inference, leading to time and resource inefficiency, especially without sophisticated computing devices. This study examines data reduction methods to enhance ANN performance in predicting soil macronutrients using NIR spectra. Multiple Linear Regression (MLR) and Principal Component Analysis (PCA) were applied to select wavelengths from the 1000–2500 nm for ANN input, comparing their performance. About 237 NIR reflectance data from paddy soil were transformed into absorbance data. MLR used forward selection to identify wavelengths with correlations higher than 0.9, while PCA selected wavelengths corresponding to the loading factor peaks for each principal component. These selected wavelengths served as inputs for the ANN model. The ANN’s performance was assessed using correlation and determination coefficients, RMSE, RPD, and model consistency. For nitrogen, the PCA+ANN model with reflectance spectra performed better (RPD 2.4-4.8) than the MLR+ANN model (RPD 2.2-2.6) using fewer wavelengths (5-9 for PCA+ANN vs. 9-12 for MLR+ANN). For phosphorus estimation, the PCA+ANN model also excelled (RPD 2.3-7.0 vs. 2.3-2.4) with fewer wavelengths (4-7 vs. 7). For potassium estimation, the PCA+ANN model showed superior performance (RPD 4.3-9.5 vs. 4.2-4.4), using the same number of wavelengths (4-8 vs. 4-6).
Keterlibatan Ayah dalam Pengasuhan Anak Usia Dini
Authors: Andini Hardiningrum  , Destita Shari  , Jauharotur Rihlah  , Afib Rulyansah
Published: August 2024

Kehadiran kedua orangtua dalam hidup anak usia dini adalah hal yang sangat penting dalam tumbuh kembangnya. Hadirnya orangtua yang lengkap akan membuat aspek perkembangan anak terstimulasi dengan optimal. Orangtua dapat melakukan pembagian peran yang sama. Meskipun pembagian peran dan keterlibatan sudah terbagi namun nyatanya keterlibatan ayah dinilai sangat minim. Masih banyak ayah yang beranggapan bahwa tugas utama laki-laki adalah bekerja sehingga mengabaikan peran ayah dalam mengoptimalisasi aspek perkembangan anak. Padahal seharusnya keterlibatan dalam mengasuh anak adalah tanggung jawab kedua orangtua yaitu ayah dan ibu. Menurut hasil survey harian online Parapuan edisi 11 Mei 2021 menyatakan bahwa di Indonesia sebagian besar suami istri sudah berbagi peran dalam mengurus anak dengan presentase paling tinggi yakni sebanyak 86,52%. Hal ini menunjukkan peran kedua orangtua sangatlah penting. Selanjutnya penelitian lain menunjukkan bahwa anak perempuan lebih banyak merasakan kedekatan dengan ayah dengan prosentase sekitar 67,05% dibanding dengan anak laki-laki dengan prosentase sekitar 61,59%. Lalu, anak laki-laki lebih merasakan kedekatan dengan ibu dengan prosentase sebesar 88,1% dibanding dengan anak perempuan yang prosentase sekitar 85,25%.  Dari tersebut menunjukkan bahwa keseimbangan pengasuhan antara ayah dan ibu sangat penting dilakukan. Penelitian ini menggunakan metode penelitian kuantitatif berupa survey yang dilakukan untuk memperoleh gambaran tentang keterlibatan ayah dalam pengasuhan anak. Teknik analisis data yang digunakan yaitu wawancara, penyebaran kuesioner, dokumentasi dan observasi.
On the permanent of multidimensional matrices
Authors: Efimov D.B.
Published: August 2024

The permanent of multidimensional matrices is expressed in
terms of operations on elements of commutative algebra with
nilpotent index 2 generators. Using a technique based on this
relationship, several properties of the permanent have been
proved. Various types of multidimensional permutations are
considered. The permanent of multidimensional matrices is
considered from the point of view of the enumeration function
of multidimensional permutations.
On the stability of circular reinforced arches in the case of spatial deformation
Authors: Andryukova V. , Tarasov V.
Published: August 2024

The work considers a circular arch loaded with uniformly distributed
normal pressure directed towards the centre. The
ends of the arch are attached with cables, one end of which
is attached to the arc of the arch at an appropriate angle, and
the distance between the points of attachment of the cables
cannot be increased. We estimated pressure values, at which
curved equilibrium forms of the arch are possible, and the
smallest of these values is found, which is the critical force.
Maxwell equations in Lobachevsky space and modeling the medium with reflecting properties
Authors: Kuz'mich A. , Buryy A. , Ovsiyuk E.
Published: August 2024

Lobachevsky geometry simulates a medium with special constitutive
relations Di = ϵ0ϵikEk, Bi = μ0μikHk,
where two matrices coincide: ϵik(x) = μik(x). The situation
is specified in quasi-Cartesian coordinates (x, y, z)
in Lobachevsky space, they are appropriate for modeling a
medium nonuniform along the axis z. Exact solutions of
the Maxwell equations in complex form of Majorana-Oppenheimer
have been constructed. The problem reduces to
a second-order differential equation for a certain primary
function which can be associated with the one-dimensional
Schrödinger problem for a particle in external potential field
U(z) = U0e2z. In the frames of the quantum mechanics,
Lobachevsky geometry acts as an effective potential barrier
with reflection coefficient R = 1; in electrodynamic
context, this geometry simulates a medium that effectively
acts as an ideal mirror distributed in space. Penetration
of the electromagnetic field into the effective medium along
the axis z depends on the parameters of an electromagnetic
waves ω, k2
1 + k2
2 and the curvature radius ρ of the used
Lobachevsky model. The generalized quasi-plane wave solutions
f(t, x, y, z) = E + iB and the relevant system of
equations are transformed into the real form, which permit us
to relate geometry characteristics with expressions for effective
tensors of electric and magnetic permittivities.
Asymmetric X-ray diffraction of confined beams in crystals
Authors: Kolosov S. , Mal'kov D. , Punegov V.
Published: August 2024

Asymmetric dynamic diffraction of confined X-ray beams in
crystals has been theoretically studied using Takagi–Taupin
equations, including numerical solution using nodal grid and
calculations of X-ray fields in Fourier space. We have fulfilled
simulation of scattering intensity distribution maps from silicon
crystal near reciprocal lattice site depending on size of
X-ray beams.
Impact of Courant number on the results of numerical simulating of signal propagation in non-dispersive homogeneous media
Authors: Makarov P. , Skandakov R. , Ustyugov V. , Scheglov V.
Published: August 2024

The paper is devoted to the study of the connection between
the numerical dispersion arising in FDTD modeling of electromagnetic
signal propagation in nondispersive homogeneous
media optically different from vacuum and the Courant number
in the 2D case. The main results are formulated in the
form of four statements, as well as a number of corollaries
and remarks that determine the nature of the numerical dispersion,
the optimal value of the Courant number and the limitations
of the method. It is proved that the optimal choice of
the Courant number eliminates the numerical dispersion and
extends the capabilities of the developed numerical algorithm
to media, which refractive index is lesser than refractive index
of vacuum, as well as media with negative refraction.
The Effects of Weaving Process on the Damage Formation of the E- Glass Yarn
Authors: Korkmaz Mehmet , Korkmaz Melih
Published: August 2024

The woven fabric production can be executed in the weaving machine by the using of different mechanisms, which are working simultaneously. Because of the weaving mechanisms, the yarn has under tension and changed between the determined range within the repetitive cycles. The mechanisms and unsteady tension cause to damage on the yarns in the woven fabric production process. The breakable fibers like carbon or glass are more sensitive to degrade in the weaving machine because of their low friction resistance in comparison with the traditional fibers. The several of studies had been carried out to determine the tension of yarns and their damage mechanisms in the weaving process. However, they focused on the damage evolutions of warp yarns in the weaving process. In addition to the warp yarns, the damage evolution of weft yarns was investigated for industrial production in this study. The prevalent weft tensioning systems were evaluated, and the spring yarn tensioning system shown the best performance. Moreover, the yarn- to- machinery part type of friction was determined as the main reason to degrade warp yarns in the industrial production of glass woven fabric.
Assessment of atmospheric pollution by heavy metals using transplanted lichen Pseudevernia furfuracea (L.) Zopf in Niğde Province, Türkiye
Authors: Yıldız Atila , Işık Volkan , Sümer Aydın Sevda
Published: August 2024

Lichens have been demonstrated to be vulnerable to air pollution for more than 140 years, since pollutants have been shown to impact crucial metabolic processes in both algae and fungus. Lichens serve as bioindicators for air pollution levels in different places by collecting air pollutants in their thallus, including heavy metals, polycyclic aromatic hydrocarbons (PAHs), and sulfur dioxide (SO2). This study involved collecting samples of Pseudevernia furfuracea (L.) Zopf from a pristine forest region (Yapraklı-Çankırı) and transplanting them for two periods of three months each at six locations surrounding the polluted Niğde provincial center in Turkey. This research aimed to analyze the concentrations of Cu, Cd, Ni, Pb, Mn, and Zn by the use of Inductively Coupled Plasma Mass Spectrometry (ICP-MS). In addition, we computed the levels of chlorophyll a and b, and also determined the proportions of chlorophyll a+b, a/b, and b/a. Furthermore, a pollution map of the city was created. According to analysis results for P. furfuracea means of heavy metals; in first period 0.36μg g−1, 0,032μg g−1, 0,44μg g−1, 0,70μg g−1, 1,94μg g−1, 0,2 μg g−1; in second period 0,58μg g−1, 0,033μg g−1, 0,36μg g−1 ,0,92μg g−1 , 1,98μg g−1 , 0,65μg g−1 for Cu, Cd, Ni, Pb, Mn, Zn. Whereas means of control stations are 0,26 μg g−1, 0,028 μg g−1, 0,23μg g−1, 0,52μg g−1,1,90μg g−1, 0,16μg g−1, in 1st period; 0,36 μg g−1, 0,027μg g−1,0,29 μg g−1, 0,56μg g−1, 1,96μg g−1, 0,58 μg g−1 in 2nd period for for Cu, Cd, Ni, Pb, Mn, Zn. The factors that contribute to high heavy metal levels are as follows: (i) traffic density, (ii) industrial activities, (iii) urban heating activities. Despite the survey's short duration, P. furfuracea was proved to be an efficient bioaccumulator organism for further biomonitoring researches.
πD^* ¯D^* Üç Mezon Sisteminin Faddeev Denkleminin Sabit Merkez Yaklaşıklığı Yöntemi ile İncelenmesi
Authors: Akarsu Merve Aleyna , Bayar Melahat
Published: August 2024

Hadron fiziğinin teorisi kuantum renk dinamiğidir. Kuantum renk dinamiğinde güçlü çiftlenim sabiti orta ve düşük enerji bölgesinde neredeyse sonsuza gitmektedir. Bu nedenle kuarklar hadronlar içerisinde hapsolmuşlardır. Kuark hapsinin gerçekleştiği enerji bölgesinde pertürbasyon teorisi kullanılamaz bundan dolayı pertürbatif olmayan yöntemlere ihtiyaç vardır. Kiral pertürbasyon teorisi bu yöntemlerin en güçlülerinden biridir. Bu çalışmada üniter kiral pertürbasyon teorisinde üç mezon durumu araştırıldı. πD^* ¯D^* üç parçacık molekül durumunu Faddeev Denklemini sabit merkez yaklaşıklığı yöntemini kullanarak çözdüldü. İki parçacık D^* ¯D^*durumunu küme olarak alındı ve üçüncü parçacık olan π (pion) bu kümeden saçtırıldı. Yaptığımız hesapların sonucunda izospin Ι=1 olan, kütlesi 4156 MeV ve genişliği yaklaşık 130 MeV olan yarı bağlı durum elde edildi.
Macrosiphum rosae (L.) (Hemiptera: Aphididae) Üzerinde Portakal Yağının Etkisi ve Coccinella septempunctata (Coleoptera: Coccinellidae) ’nın Farklı Dozlara Yönelimi
Authors: Sevinç Mehmet Sedat , Yeşilırmak Murat , Demir Bilal
Published: August 2024

Özet: Yağlık gül yetiştiriciliğinde Macrosiphum rosae (L.) (Hemiptera: Aphididae) önemli bir tarımsal zararlı olarak karşımıza çıkmaktadır. Mücadelesi için portakal yağı kullanımının araştırıldığı bu çalışmada; 2021 yılında yarı kontrollü koşullarda öldürücü doz tespiti yapılmış ve 60 g L-1 portakal yağı içerikli preparatın en etkili bulunan 400 ml 100 L-1 dozu 2021, 2022 ve 2023 yıllarında açık arazi koşullarında test edilmiştir. Yıllar itibariyle sırasıyla ölüm oranlarının %99.6, %100, %100 olduğu görülmüştür. Ayrıca farklı dozların uygulandığı insect-net ile kapalı alana salınan 50 adet Coccinella septempunctata (Coleoptera: Coccinellidae) bireylerinin salımdan 24 saat sonra yapılan sayımlarında 400 ml 100 L-1 doz uygulaması üzerinde toplam 27 adet bireyin, 300 ml 100 L-1 doz uygulaması üzerinde ise toplam 7 adet bireyin varlığı tespit edilmiştir. 16 adet Coccinella septempunctata bireyi ile de alanda karşılaşılmamıştır. Sonuç olarak; yağlık gül yetiştiriciliğinde Macrosiphum rosae mücadelesinde 400 ml 100 L-1 dozunun etkili olduğu ve bu çalışmada avcı böceklerin kontrol grubu ve düşük dozlardan daha çok yüksek dozlara çekildiği görülmüştür.
Genel Eğitim Lisans Programlarındaki Öğretmen Adaylarının Özel Eğitime İlişkin Bilgi Düzeylerinin Çeşitli Değişkenler Açısından İncelenmesi
Authors: Aydın Orhan , Yılmaz Nusrettin
Published: August 2024

Özel gereksinimli öğrencilerin yaklaşık dörtte üçü genel eğitim sınıflarında öğrenim görmektedir. Buna karşın, genel eğitim lisans programlarında özel gereksinimli öğrencileri ve onların eğitimlerini konu edinen zorunlu bir ders yalnızca “özel eğitim ve kaynaştırma” dersiyle sınırlıdır. Bu kapsamda, bu çalışmada genel eğitim lisans programlarında öğrenim gören ve eğitim fakültelerinin tüm programlarında zorunlu lisans dersi olan “özel eğitim ve kaynaştırma” dersini başarıyla tamamlayan öğretmen adaylarının özel eğitim konularındaki yeterliliklerini belirlemek amacıyla; (a) özel eğitim ve özel gereksinimli öğrenciler, (b) özel eğitim uygulamaları ve (c) bireyselleştirilmiş eğitim programları (BEP) konularına ilişkin bilgi düzeyleri değerlendirilmiştir. Öğretmen adaylarının bilgi düzeylerinin çok boyutlu değerlendirilmesini sağlamak amacıyla Bloom taksonomisinin alt boyutlarından hatırlama, kavrama, uygulama, analiz etme ve değerlendirme boyutları dikkate alınarak a, b, c maddelerinde belirtilen üç kategori için toplam 60 adet çoktan seçmeli soru maddeleri oluşturulmuş ve bu sorular aynı üniversitede eğitim gören ve “özel eğitim ve kaynaştırma” dersini başarıyla tamamlayan öğretmen adaylarına çevrimiçi platformda iletilmiştir. Öğretmen adaylarının verdikleri yanıtlar puanlanarak çeşitli değişkenler açısından ilişki ve etki analizleri için bazı istatistiksel testler kullanılarak incelenmiştir. Elde edilen bulgular, öğretmen adaylarının özel eğitim konusunda özel eğitim ve özel gereksinimli öğrencilere ilişkin genel bilgi düzeylerinin daha ileride olduğunu, özel eğitim uygulamaları ve BEP’e ilişkin bilgi düzeylerinin ise daha zayıf kaldığını göstermiştir. Ayrıca, kadın katılımcıların her üç bilgi testine verdikleri yanıtların doğruluk oranlarının erkek katılımcılardan anlamlı derecede ilerde olduğu tespit edilmiştir. Bunun yanısıra, “özel eğitim ve kaynaştırma” dersini deprem öncesinde yüz yüze alarak başarılı olan ilgili lisans programlarındaki öğretmen adaylarının her üç bilgi testinden aldıkları puanların deprem sonrasında çevrimiçi katılım göstererek “özel eğitim ve kaynaştırma” dersinde başarılı olan ilgili lisans programlarındaki katılımcılardan anlamlı düzeyde ilerde olduğu görülmüştür. Bulgular, alanyazın dikkate alınarak tartışılmış olup çalışma sonunda genel eğitim öğretmen adaylarını özel eğitim konusunda daha yeterli kılmak için lisans programlarına ilişkin gerçekleştirilebilecek çeşitli düzenlemelere değinilmiştir.
Matematik Öğretmen Adaylarının Beceri Temelli Muhakeme Sorularına Yönelik Bilişsel ve Duyuşsal Yeterlik Boyutlarının İncelenmesi
Authors: Güçlü Hasibe , Özdemir Duygu , Alıkçı Oğuzhan
Published: August 2024

Bu araştırmada matematik öğretmen adaylarının beceri temelli muhakeme sorularına yönelik bilişsel ve duyuşsal yeterliklerinin incelenmesi amaçlanmıştır. Çalışmanın katılımcı grubunu amaçsal ve kolay erişilebilir örnekleme yöntemine göre belirlenen İstanbul ve Antalya illerindeki iki üniversitenin ilköğretim matematik öğretmenliği bölümünde öğrenim gören 40 öğretmen adayı oluşturmuştur. Milli Eğitim Bakanlığı tarafından paylaşılan Liselere Geçiş Sınavı (LGS) örnek beceri temelli test sorularından oluşan ‘Beceri Temelli Başarı Testi’ nicel verilerin toplanmasında kullanılmak üzere uzman görüşleri yardımıyla oluşturulmuştur. Ayrıca öğretmen adaylarının hem bilişsel hem de duyuşsal yeterlik durumlarını açığa çıkarmak amacıyla 'Beceri Temelli Muhakeme Görüş Soruları Formu' aracılığıyla da görüşleri toplanmıştır. Veriler bu formlar ve uygulama sonrasında yapılan takip görüşmeleri aracılığıyla toplanmıştır. Tarama ve içerik analizi yöntemiyle incelemesi yapılan verilerden elden edilen bulgular ‘Başarı Testinden Elde Edilen Bilişsel Yeterlik Durumlarına İlişkin Bulgular’ ve ‘Bilişsel ve Duyuşsal Yeterlik Algılarına İlişkin Bulgular’ olmak üzere iki ana tema altında yorumlanmıştır. Matematik öğretmen adaylarının tamamının bu çalışmada yer alan beceri temelli muhakeme sorularına yönelik ortalama başarı oranının %55,6 olduğu görülerek, öğretmen adaylarının bilişsel yeterlikleri bağlamındaki ihtiyaç durumu ortaya çıkarılmıştır. Ayrıca öğretmen adaylarının bu sorulara yönelik stres, kaygı, önyargı ve özgüvene ilişkin duyuşsal yetersizliklerini işaret eden ve bunlara bağlı olarak da bilişsel anlamda da kendilerini yetersiz hissettiklerini açığa çıkaran bulgular elde edilmiştir. Çalışma bulguları ile, beceri temelli muhakeme sorularına yönelik içeriklerin öğretmen adaylarının öğretim programlarına dahil edilmesi ve böylece öğretmen adaylarının bu anlamdaki bilişsel ve duyuşsal yeterliklerinin artırılması önerilmektedir.
Adopted LTO cycle to operational conditions at polish airports
Authors: Maciejewska Marta , Kurzawska-Pietrowicz Paula
Published: August 2024

The aim of this article is to take into account specifications of the airport area in LTO test, when impact of the air transport at the airport- proximate area is analysed. The LTO test doesn’t con-sider the specifications of e.g. airport manoeuvring area and length of taxiways. The LTO test calculation methodology requires knowledge of aircraft engine parameters, such as thrust, spe-cific fuel consumption and emission values indexes. Based on the data contained in the Engine Emissions Database (ICAO), the parameters of the LTO test can be clearly determined. The main analysis element was to conduct a taxiing simulation using the CKAS MotionSim5 Flight Simu-lator in order to indicate the operational taxiing time at individual polish airports. Statistically significant differences were found between the emissions of selected exhaust gas components in the regulation LTO test and the operational LTO test. Analyzes were carried out in relation to three different propulsions that are most often used by carriers serving the largest number of passengers in Poland.
Pertumbuhan dan Kandungan Polifenol Selada Merah (Lactuca sativa L. var. Crispa) pada Media Tanam dengan Pemberian Asam Humat
Authors: . Khoerunnisa , Proklamasiningsih Elly , Budisantoso Iman
Published: August 2024

Selada merah (Lactuca sativa L. var. Crispa) merupakan salah satu tanaman yang memiliki nilai komersial dan berperan sebagai penghasil polifenol. Polifenol memiliki manfaat yang sangat luas, salah satunya adalah sebagai antioksidan. Peningkatan kandungan polifenol pada tanaman dapat dilakukan dengan cara meningkatkan biomassa tanaman. Asam humat merupakan biorganik yang mengandung unsur hara makro dan mikro sehingga dapat meningkatkan pertumbuhan. Asam humat juga dapat meningkatkan aktivitas enzim PAL (Phenilalanin amonia lyase) yang dapat meningkatkan kandungan polifenol. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh asam humat terhadap pertumbuhan dan kandungan polifenol selada merah serta menentukan konsentrasi asam humat yang dapat meningkatkan pertumbuhan dan kandungan polifenol selada merah.
Penelitian ini dilaksanakan dengan metode eksperimental Rancangan Acak Lengkap (RAL). Perlakuan terdiri atas empat konsentrasi asam humat yaitu 0 g.kg­-1, 4 g.kg­-1, 8 g.kg­-1, dan 12 g.kg­-1 dengan lima kali ulangan. Parameter yang diamati adalah jumlah daun, bobot basah, bobot kering, dan kandungan polifenol. Penelitian dilaksanakan di Greenhouse dan Laboratorium Fisiologi Tumbuhan, Fakultas Biologi Universitas Jendral Soedirman dari November 2021 sampai Februari 2022. Data yang diperoleh dianalisis menggunakan uji ANOVA dengan taraf uji 0,05 dan 0,01, dengan uji lanjut Duncan pada taraf uji 0,05. Hasil penelitian menunjukkan bahwa pemberian asam humat mampu meningkatkan pertumbuhan dan kandungan polifenol selada merah dengan konsentrasi paling efisien 6,45  g.kg­-1.
Authors: Haliza Siti Nur , Tivani Inur
Published: August 2024

Abstrak  Peningkatan sampah organik diindonesia, semakin meningkat akibat pertumbuhan jumlah penduduk. Dalam upaya menangani masalah tersebut, pemanfaatan limbah organik menjadi eco-enzyme menjadi solusi yang mudah terutama dalam penggolahanya. Eco-enzyme hasil dari fermentasi limbah sampah organik seperti kulit buah dan sayuran, gula pohot dan air. Penelitian ini bertujuan untuk mengetahui pengaruh jenis bahan organik pembuatan eco-enzyme terhadap daya hambat bakteri staphylococcus aureus. Metode yang digunakan pada penelitian ini adalah metode difusi dengan fermentasi eco-enzyme menggunakan campuran limbah organik. Campuran bahan organik yang digunakan dibagi menjadi 3 eco-enzyme 1= kulit lemon;gula; air, eco-enzyme 2= kulit lemon;kulit nanas; gula; air dan eco-enzyme 3= kulit lemon; kulit nanas; sayur kangkung; gula; air. serta uji aktivitas antibakteri dengan metode difusi. Metode analisis data yang digunakan yaitu metode One Way Analysis of Varience (ANOVA satu arah). Berdasarkan hasil penelitian uji aktivitas antibakteri eco-enzyme terhadap staphylococcus aureus menunjukkan bahwa kombinasi bahan organik tertentu memiliki efektivitas yang berbeda. Kombinasi bahan organik yang paling signifikan dalam menghambat bakteri staphylococcus aureus adalah eco-enzyme dua dan eco-enzyme tiga, dengan rata- rata diameter zona hambat yang didapatkan 11,38 mm dan 11,39 mm. Hasil uji ANOVA diperoleh nilai signifikan 0,004<0,05, dapat disimpulkan bahwa terdapat perbedaan diameter zona hambat dari campuran bahan organik pada eko-enzim. Dapat disimpulkan bahwa banyaknya campuran jenis bahan organik yang digunakan pada eco-enzyme, maka semakin kuat kemampuanya dalam menghambat bakteri staphylococcus aureus.
Deteksi Seksual Dimorfisme Pada Benih Ikan Tawes (Barbonymus gonionotus Bleeker, 1850) Berdasarkan Morfologi
Authors: Utaminingtyas Siwiana Dinar , Bhagawati Dian , Setiyono Eko
Published: August 2024

Ikan tawes merupakan ikan yang banyak di budidayakan di Indonesia. Budidaya ikan membutuhkan indukan yang berkualitas. Indukan dengan kualitas tinggi dapat didapatkan dari budidaya tunggal kelamin. Budidaya tunggal kelamin dilakukan dengan menyeleksi ikan berdasarkan jenis kelamin sejak benih. Penentuan jenis kelamin pada benih untuk budidaya memiliki kesulitan karena seksual dimorfisme belum terlihat jelas, sehingga perlu dilakukan penelitian mengenai seksual dimorfisme pada benih ikan tawes untuk mendukung budidaya ikan. Tujuan dari penelitian ini adalah untuk mengetahui apakah performa morfologi, meristik, dan truss morphometric dapat digunakan untuk membedakan benih ikan tawes jantan dan betina, dan mengetahui karakter morfologi yang dapat digunakan untuk membedakan benih ikan tawes jantan dan betina. Metode yang digunakan adalah metode survey dengan purposive sampling. Sampel yang diambil adalah 60 ekor sampel benih ikan tawes dengan 2 kelompok ukuran. Kelompok 1 adalah benih dengan ukuran 5-6 cm dan kelompok 2 adalah benih dengan ukuran 6,1-7 cm. Sampel yang didapatkan diamati tampilan morfologinya yaitu performa morfologi, meristik, dan truss morphometric. Data performa morfologi dan meristik di analisis secara deskriptif, sedangkat data truss morphometric dianalisis menggunakan SPSS dengan Uji Mann Whitney. Hasil penelitian ini menunjukkan bahwa performa morfologi dan meristik tidak menunjukkan adanya seksual dimorfisme, sedangkan hasil pengukuran truss morphometric menunjukkan perbedaan yang signifikan pada garis A2 yaitu jarak antara ujung mulut dan batas akhir tulang kepala. Berdasarkan hasil rata-rata pengukuran truss morphometric pada garis A2, didapatkan hasil bahwa kepala bagian dorsal dari benih ikan tawes berukuran lebih panjang dan runcing dari benih ikan betina.
Teknologi Smartphone, Artificial Intelligence, Dan Kebijaksanaan Etika Dalam Pendidikan Bahasa Mandarin
Authors: Adhimas Yogi Bagus , Afrina Uray , Cleveresty Tri Bigrit
Published: August 2024

Teknologi dari masa ke masa semakin canggih dan memberikan kemudahan pada setiap kegiatan. Rasa mudah tersebut perlu diimbangi dengan landasan etika penggunaannya. Pada beberapa fase seperti pekerja bisa jadi teknologi memang sangat diperlukan untuk efisiensi dan tujuan positif lainnya. Berbeda dengan pembelajar, kemudahan mengakses materi memang selalu membuat nyaman, tapi keahlian diri agaknya hanya bisa diraih dengan berlatih secara kerja keras. Penelitian ini menganalisis pentingnya landasan etika menghadapi tawaran kemudahan teknologi yang akan dipaparkan dengan cara interpretasi yang mendalam dan disempurnakan oleh studi kapustakaan. Hasil dari struktur berfikir tersebut adalah bahwa teknologi ada untuk membantu dan bukan menjadi sesuatu yang wajib hadir. Kemampuan-kemampuan setiap individu pembelajar bahasa mandarin harus melalui tahapan belajar menulis dengan tangan sendiri, membaca kamus buku dan cara belajar konvensional lainnya, sebelum akhirnya menjadi individu yang mahir berbahasa Mandarin.
The Effect of the pH of Aquades Solvent on the Physicochemical Characteristics of Parijoto (Medinilla Speciosa) Extract
Authors: Effendi Nazmirafa , Septiana Aisyah Tri , Handayani Isti
Published: August 2024

Parijoto is an endemic Indonesian plant that is believed to have many health benefits. Parijoto fruit extraction is an effort to obtain extracts so that they are more applicable in the food sector. This research aims to examine the effect of the pH of the distilled water solvent on the characteristics of parijoto extract. Extraction was carried out using the Microwave-Assisted Extraction (MAE) method. Aquades was chosen as a solvent because it is safe, easy to obtain, and cheap. pH adjustment was carried out using citric acid and Ca(OH)2 to produce pH 2,4,6,9 and 11. As a control, distilled water was not adjusted for pH. The research was conducted experimentally using a Randomized Block Design. Repetition was carried out 5 times. The resulting extract was observed for levels of anthocyanins, vitamin C, total titratable acids, pH, and total dissolved solids. Based on the results, the highest levels of anthocyanins (31.64 mg/L), total titratable acids (10.36%), and total dissolved solids (3.63 oBrix), were produced using distilled water pH 2, but vitamin C (26.64 mg/100 g), and the pH of the extract (1.92) was the lowest. The highest levels of vitamin C (77.40 mg/100 g) were produced in distilled water without pH adjustment (pH 6.0).