bluuebunny/crossref_metadata_2025 huggingface dataset:
Physiochemical Properties of Dual-Modified (Hydroxypropylated and Cross-linked) Rice Starches
Authors: Choi Hyun-Wook , Kim Sang-Kab , Choi Sung-Won , Kim Chang-Nam , Yoo Seung-Seok , Kim Byung-Yong , Baik Moo-Yeol
Published: November 2024

Physicochemical properties of hydroxypropylated and cross-linked (HPCL) rice starch were investigated. Dual modification of rice starch was carried out by hydroxypropylation using propylene oxide (2, 6, and 12%) and then cross-linking using phosphorus oxychloride (0.005% and 0.02%). Swelling power of dual-modified rice starch increased at lower temperature (60°C) than that of native rice starch (70°C). HPCL rice starch showed slightly lower solubility (1.6-6.1%) than native rice starch (2.2-13.8%). Solubility and swelling power tended to gradually increase with increasing phosphorus oxychloride contents. RVA pasting temperature (66.2-70.8°C) and peak viscosity (160.6-171.1 RVU) of HPCL rice starch were lower than that of those of native starch (71.3°C, 190.4 RVU) and decreased with increasing propylene oxide concentration. DSC thermal transitions of HPCL rice starches shifted to lower temperature and show less amylopectin melting enthalpy (11.8-9.8 J/g) than that of native rice starch (11.9 J/g). Overall, physicochemical properties of HPCL rice starches were highly dependent on hydroxypropylation rather than cross-linking.
Operational Properties and Microbial Inactivation Performance of Dielectric Barrier Discharge Plasma Treatment System
Authors: Mok Chulkyoon , Lee Taehoon
Published: November 2024

A dielectric barrier discharge plasma (DBDP) treatment system was fabricated and the optimum operating conditions for the plasma generation were determined in order to explore the potential of cold plasma as a non-thermal processing technology. The microbial inactivation performance of the system was also evaluated against Staphylococcus aureus. The system consisted of power supply, transformer, electrode assembly and sample treatment plate. The input power was 220 V single phase AC and amplified to 10.0-50.0 kV on a transformer. A pulsed sine wave of frequency 10.0-50.0 kHz was introduced to the electrode embedded in ceramic as a dielectric barrier material in order to generate plasma at atmospheric pressure. Higher currents and consequently greater power were required for the plasma generation as the frequencies increased. A homogeneous and stable plasma was generated at currents of 1.0-2.0 , and frequencies of 32.0-35.3 kHz. The optimum electrode-gaps for the plasma generation were 1.85 mm without loaded samples. More power was consumed as the electrode-gaps increased. The practically optimum electrode-gap was, however, 2.65 mm when samples were treated on slide-glasses for microbial inactivation. The maximum temperature increase after 10 min treatment was less than 20°C, indicating no microbial inactivation effect by heat and thereby insuring a non-thermal method. The DBDP inactivation effect against Staphylococcus aureus increased linearly with treatment time up to 5 min, but plateaued afterward. More than 5 log reduction was achieved by 10 min treatment at 1.25 A.
Physicochemical Properties of Extruded Rice Flours and a Wheat Flour Substitute for Cookie Application
Authors: We Gyoung Jin , Lee Inae , Kang Tae-Young , Min Joo-Hong , Kang Wie-Soo , Ko Sanghoon
Published: November 2024

The purpose of this study is to prepare extruded rice flours suitable for baking rice cookies. The extruded rice flours were prepared at 100 and 130°C temperature and 25 and 27% moisture content in a co-rotating twin screw extruder. The rice extrudates were dried at 100°C for 18 hr and subsequently ground into the fine flour. Characteristics of the extruded rice flours were examined by rapid visco analysis, hydration property analysis, differential scanning calorimetry (DSC), and in vitro digestion test. Water absorption, solubility, and swelling power of all extruded rice flours were higher than those of native rice flour. DSC analysis showed that native rice flour had a peak at about 65°C while all extruded rice flours did not show any peaks since they were already gelatinized during the extrusion process. Viscosity of the extruded rice flours decreased with increasing temperature and lowering moisture content in the extrusion process. The extruded rice flours prepared at 130°C exhibited lower viscosity than those prepared at 100°C. The operating temperature of the extrusion process was critical for the starch digestion in vitro. The extruded rice flours prepared at 130°C showed a rapid decrease in digestible starch content while an increased level of slowly digestible starch content was observed compared to those treated at 100°C in the extruder. Cookies were prepared with a mixture of wheat flour and extruded rice flours at the ratio of 7 to 3. The cookies made with the extruded rice flours had lower spread factor and darker yellow color than those prepared with wheat flour only. Hardness of the extruded rice flour-added cookies was similar to that of the wheat flour cookie whereas their overall acceptance was better. Therefore the rice cookies partially supplemented with extruded rice flours may have a potential as early childhood foods which require soft texture and allergy reduction.
Comparison of Physicochemical Properties of Agar and Gelatin Gel with Uniform Hardness
Authors: Ryu Jina , Jung Junho , Lee Suyong , Ko Sanghoon
Published: November 2024

In this study, the physicochemical properties of gelatin and agar gels with similar hardness were compared in order to determine the potential of agar-based gelatin substitute. Gel was prepared by adding 60 g sugar to 150 mL distilled water and subsequently gelatin or agar was added. Gelatin and agar concentrations used were 12 and 2 g/mL, respectively, for uniform hardness. Gelatin and agar gels showed no significant hardness values which were 22.36 and 22.80, respectively. The pH values of gelatin and agar gels formed were 8.17 and 7.05, respectively. Agar gel (14.13°Bx) was slightly higher in sugar content than gelatin gel (12.97°Bx). The brightness of gelatin gel surface was brighter than that of agar gel surface. The adhesiveness, cohesiveness and chewiness of gelatin gel were higher than those of agar gel. Gelatin showed 100% water holding capacity while agar gel possessed relatively low water holding capacity (98.57%) which was likely due to the low concentration of agar for gel preparation compared to the gelatin gel. The stress relaxation time of agar gel was 2.54 s whereas that of gelatin gel was not measurable due to long time constraint. In conclusion, this study is useful in the development of agar-based gelatin substitutes which are preferred for low-calorie and vegetarian food products.
Quality Characteristics and Functional Components of Bokbunja (Black Raspberry) Juice
Authors: Park Heejeon , Song Ji-young , Chea Kyuseo , Lee Heekwon , Choi Hehran
Published: November 2024

To promote the utilization of Rubus coreanus Miquel as a functional food, its physicochemical properties were examined during maturation and new beverage was developed based on the results of sugar content and acidity. The sugar content was ranged from 12-18 °Bx and the acidity was 0.4 to 0.9%. This study showed that the optimal sugar content was 13-14 °Bx and the acidity was 0.5-0.7% for developing Black raspberry beverage. Black raspberry beverage had higher contents of amino acid and mineral and greater antioxidant activity than orange and grape juices.
A Study of Quality and Shelf-life of Korean Traditional Turbid Rice Wine (Takju) by Batch Intense Pulsed Light
Authors: Kim Byeong Cheol , Kim Bo-Ra , Kim Ae Jin , Shin Jung-Kue
Published: November 2024

Intense pulsed light (IPL) is a new nonthermal sterilization method intended for decontamination of food using short time high frequency pulses of an intense broad spectrum light. The effects of intense pulsed light on the bactericidal and quality attributes of akju during storage were investigated. Initial total viable cells of treated Takju was 1.8- 2.7×104 CFU/mL, reducing 1-2 log cycle as compared with those of untreated Takju. When the quality changes of treated Takju were examined during storage at 4°C and 30°C, reducing sugar contents increased in both untreated and treated Takju during storage. However, the pH remained constant or slightly decreased in both samples. Titratable acidity of untreated Takju increased rapidly as the storage time was extended, but that of treated Takju was gradually increased. Viable cells of total bacteria, lactic acid bacteria and yeast were maintained in both samples during storage at 4°C. However, the viable cells of treated Takju were simlar to those of untreated Takju after 2 days at 30°C.
Effect of Post-harvest Ultraviolet Irradiation on Biological Activities in Strawberries
Authors: Hong Ji-Young , Lee Sang Kook , Cho Yong-Jin , Kim Chul-Jin , Kim Namsoo , Kim Chong-Tai , Maeng Jin-Soo
Published: November 2024

Strawberries have various fruit phenolics which provide biological activities such as antioxidant, anti-inflammatory, and anti-proliferative potential against various cancer cells. Previous studies showed that such phenolics might be enriched by ultraviolet irradiation (UV) after harvesting fruits and vegetables. In the present study, we investigated the effect of post-harvest ultraviolet irradiation on the biological activities of strawberries. When 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity, induction of quinone reductase activity, inhibitory effect on the proliferation of various human cancer cells, and inhibitory effect on the expression of inducible nitric oxide synthase (iNOS) of UV-irradiated strawberries using Maehyang, Akihime, and Red pearl, were evaluated, the biological activities were, in general, enhanced by ultraviolet irradiation after harvest.
Reduction of Microorganisms in Red Pepper Powder by Low Pressure Discharge Plasma
Authors: Mok Chulkyoon , Jeon Hyungjoo
Published: November 2024

Low pressure discharge plasma (LPDP) was applied to reduce the microbial counts of red pepper powder, and its effects on the quality were determined. Red pepper powder samples purchased in local markets showed substantial levels of microbial contamination; 7.33×104-1.07×107 CFU/g for bacteria and 3.47×104-3.16×106 CFU/g for mold counts. The LPDP inactivation of microorganism in red pepper powder followed a biphasic first order reaction kinetics. The LPDP inactivation rate constants increased with the input power and the fineness of particles, and showed greater values against mold than bacteria. Excessive LPDP treatment induced substantial changes in color and reduction in capsaicinoid contents. However the sensory color and taste were not changed significantly with the LPDP treatments for up to 5 min. The sensory flavor and overall acceptability remained unchanged with 10 min treatment. The optimum LPDP treatment time for red pepper powder was 5 min, which resulted in 1.5 log reduction in bacterial counts with no significant changes in sensory quality.
Antimicrobial and Antioxidative Activities of Phytic Acid in Meats
Authors: Han Bok-Kyeong , Choi Hyeok-Jun , Park Young-Seo
Published: November 2024

Phytic acid was purified from rice bran and applied to meats. Then, its antimicrobial and antioxidant activities were examined to investigate its availability as a food preservative. When Salmonella Typhimurium KCCM 11806 was cultivated in tryptic soy broth added with phytic acid, the growth of S. Typhimurium was completely inhibited at the concentration of 1% (w/v) phytic acid. Similarly, the growth of Escherichia coli O157:H7 was reduced by 3.0 log scale when 1% (w/v) phytic acid was added to the growth medium. When Salmonella Typhimurium was inoculated onto fresh chicken, fork, and beef supplemented with phytic acid followed by incubation at 37°C for 24 hr, the antimicrobial activity of phytic acid was dependent on the concentration of phytic acid, and the growth of Salmonella Typhimurium was reduced by 3 log scale at 1% (w/v) phytic acid. When phytic acid was applied to the fresh chicken, fork, and beef, the growth of E. coli O157:H7 was reduced by 2.0 log scale at the concentration of 0.5% (w/v) phytic acid. Phytic acid also inhibited the growth of E. coli O157:H7 inoculated on cooked meats in a concentration-dependent manner. When fresh meats supplemented with phytic acid were stored at 4°C for 3 days, TBARS (thiobarbituric acid-reactive substances) values of fresh meats increased as the storage time increased, and decreased significantly at the concentration of 5 mM phytic acid, indicating that phytic acid has antioxidant activity.
Comparison of Changes of Lipid Oxidation of Soybean Powders from Korea and East Russia at Different Packages
Authors: Uhm Joo-Tae , Lee Youn-Ju , Lee Soo-Bock , Kim Jong-Dai , Lee Ok-Hwan , Yoon Won-Byong
Published: November 2024

The changes of lipid oxidation of soybean powders from Korea (Baektae) and East Russia (Bazaz) were compared with different packages. The soybean from the East Russia (Bazaz) is a good resource to fulfill Korean consumer’s needs for the non-GMO soybean. The lipid oxidation associated with storage of soybean powder is critical for quality. Three different packages, such as air contained, vacuum, and nitrogen packages, were applied and compared. To monitor the changes of lipid oxidation, TBA test, acid value, POV test, and fluorescence spectrum test were conducted. The storage temperature and period were 25°C and 20 days, respectively. Both Baektae and Bazaz did not show any significant difference during the storage at 25°C. Samples from all the packages maintained the initial quality of soybean powders. The slight increase of TBA values and POV values at the end of the storage period was observed but those were in the acceptable range. To verify the quality of storage samples, the iodine value, saponification value, and the specific gravity were measured and showed that all measurements were in the acceptable range to be used as an ingredient for processed food, such as soybean oil.
Production and Optimization of Extracellular Polysaccharide by Suspension Cultivation of Aloe vera L. Callus
Authors: Kim Myung-Uk , Cho Young-Je , Lee Shin-Young
Published: November 2024

The extracellular polysaccharide production from suspension culture of Aloe vera L. was analyzed, and the optimization for suspension cultivation was investigated. From specific polysaccharide assay of glucomannan, FT-IR and 1H NMR spectrum, the extracellular polysacchride from suspension culture was found to be similar to β-1,4-glucomannan originated from Aloe vera fresh leaf. The polysaccharide existed in an acetylated form and its molecular weight by gel permeation chromatography was estimated to be 490 kD (Mn = 440 kD; polydispersity = 1.115). From medium optimization by simplex-cemtroid design using MINITAB®, the callus growth on the 2,4-D of 11.82 μM, kinetin of 13.84 μM and α-naphthalene acetic acid of 4.34 μM was turned out to be significantly superior than the growth on the other culture media combinations. Under this optimal culture media, other conditions such as the suspension culture's temperature, pH and the growth terms were determined. These results showed that the callus growth was optimum at 25°C, pH 5.5 and in 2 weeks. The maximum levels of growth and extracellular polysaccharide production of callus by optimal conditions were about 20.4 and 2.5 g/L, respectively, showing the profile of extracellular polysaccharide production was closely related to the callus growth.
Analysis of Microflora Profile in the Manufacturing Process of Commercial Tofu
Authors: Lee Sulhee , Park Young-Seo
Published: November 2024

Microflora profiles including total bacteria, psychrophiles, and spore-forming bacteria in manufacturing process steps of tofu were analyzed to elucidate the cause of microbial contamination. The viable cell numbers of total bacteria in soybean and packed tofu were 4.75 and 2.53 log CFU/g, respectively. The viable cell number of psychrophiles in soybean was calculated to 3.55 log CFU/g, and reduced to 0.78 log CFU/g by heating during the soymilk preparation step, and was not detected in the final product. The viable cell numbers of spore-forming bacteria, the major bacteria in soymilk, in soybean and packed tofu were 1.75 and 0.58 log CFU/g, respectively. Total twenty nine genus and seventy species of bacteria were isolated and identified in the manufacturing process of tofu, from soybean to final packed tofu. The major bacteria existed in the soybean, soymilk, forming belt, sum-mul plate, knife, packed tofu before sterilization, and packed tofu after sterilization were identified as Bacillus spp., Lysinibacillus bronitoleran, Acinetobacter spp., Bacillus spp., Acinetobacter spp., Acinetobacter spp., Staphylococcus spp., respectively.
Physicochemical Properties of Pectins Extracted from Pumpkin Peel
Authors: Lee Young-Me , Kim Seung-Ki , Park Jiwon , Auh Joong-Hyuck
Published: November 2024

Pectins were isolated from pumpkin peel with hot-acid extraction method and the physicochemical properties were determined including molecular weight distribution, galacturonic acid content, degree of methylation & acetylation and bile acid binding capacity in vitro. Pumpkin peel contained higher dietary fiber (16%) compared to the pumpkin flesh. Pectins prepared from pumpkin peel had 53% of galacturonic acid, whereas showed relatively higher degree of methylation (86.5%) with some degree of acetylation as well, which was distinct from commercial citrus peel pectin. In addition, bile acid binding capacity of pumpkin peel pectins was investigated in vitro and around 9% of taurocholic acid was bound in a model system, which indicated the possible health promoting effect of pumpkin dietary fiber.
Screw Configuration Effect on Physicochemical Characteristics of Extrudates Produced by Twin-Screw Extrusion of Rice Grain
Authors: Kim Dong Eun , Lim Jung-Dae , Lee Beom-Goo , Lee Kang-Yol , Shin Malshick , Min Joo-Hong , Kang Wie-Soo , Lee Shin Young
Published: November 2024

This study was done to investigate the effects of five screw configurations (config.) on rice grain extrudates. Five different screw configurations, in which the angles (45°, 90°, and 135°) and number of kneading screws were different, were used in extruding rice. The pressure and specific mechanical energy (SME) increased (5,748.76 kPa and 52.80 kJ/kg, respectively) as the angle and number of kneading screws increased. As shown in Config. 5, the angle of two kneading screws increased to 135° from 45°. The expansion ratio (ER) and water solubility index (WSI) increased as shear increased. In Config. 5, the ER increased to 3.06 and the WSI increased 16.2 times, unlike the control item. The results can be applied in producing processed rice, such as rice expansion snack and cereal for breakfast, and solubilizing functional dietary fiber in water.
Effects of Fermented Ginger Extracts on the Production of NO and PGE2 in RAW 264.7 Macrophages
Authors: Chung Ha-Yull , Park Seung-Yong
Published: November 2024

Ginger is popular worldwide as a folk medicine with many claims of its biological effects. Nevertheless, there are some limitations for using it as a food ingredient due to the pungent odor that originates from gingerol and its derivatives. In this study, gingers were fermented with lactic acid bacteria such as Lactobacillus plantarum, Leuconostoc mesenteroides, Streptococcus thermophilus, and Lactobacillus acidophilus to increase the sensory property of ginger. The prepared fermented ginger extracts showed electron donating ability and cyclooxygenase-2 inhibitory effect in vitro. The fermentation also inhibited the production of nitrogen oxide. Among the fermented ginger extracts GLpe and GLme which were obtained by fermentation with lactic acid bacteria from kimchi, showed an over 60% inhibitory effect on the production of prostaglandin-E2 in RAW 264.7 macrophages. In addition, GLpe and GLme showed a slight inhibitions on 15-lipoxygenase. We would expect that fermented ginger extracts like GLpe and GLme could be used as a health food ingredient for relieving uncomfortable symptoms caused by inflammation or allergy.
Antioxidant Activity of Broccoli and Cabbage Depending on the Extraction Solvent
Authors: Jeon Kyeong-Hak , Heo Seung-Hwan , Lee Yu-Lim , Hwang Eun-Ju , Hyun Ji-Yong , Lee Yu-Jin , Park Jae-Wan , Yi Hye-Yoon , Chun Ji-Yeon
Published: November 2024

Broccoli and cabbage are known to have antioxidant, cholesterol-lowering, and anticancer effects due to their high bioactive component levels. This study applied 70% ethanol and hydrothermal extraction to separate bioactive components from broccoli and cabbage. 30°Brix extracts were freeze-dried and then diluted in various concentrations with distilled water for analysis. Total polyphenol contents, DPPH radical scavenging activity, ABTS radical scavenging activity, ferric ion reducing antioxidant power, and hydrogen peroxide scavenging activity were analyzed. The diverse antioxidant assays, except DPPH radical scavenging activity, showed that hydrothermal extracts had significantly higher activity than the 70% ethanol extracts (p<0.05). In this study, it suggested that hydrothermal extraction is relatively effective in producing broccoli and cabbage extracts. Moreover, hydrothermal extraction conditions could be low-cost and environmentally friendly.
How to implement the data collection of leaf area index by means of citizen science and forest gamification?
Authors:   School of Forest Sciences, University of Eastern Finland, Yliopistokatu 7, FI-80101 Joensuu, Finland, Zhang Shaohui , Korhonen Lauri , Nummenmaa Timo , Bianchi Simone , Maltamo Matti
Published: November 2024

Leaf area index (LAI) is a critical parameter that influences many biophysical processes within forest ecosystems. Collecting in situ LAI measurements by forest canopy hemispherical photography is however costly and laborious. As a result, there is a lack of LAI data for calibration of forest ecosystem models. Citizen science has previously been tested as a solution to obtain LAI measurements from large areas, but simply asking citizen scientists to collect forest canopy images does not stimulate enough interest. As a response, this study investigates how gamified citizen science projects could be implemented with a less laborious data collection scheme. Citizen scientists usually have only mobile phones available for LAI image collection instead of cameras suitable for taking hemispherical canopy images. Our simulation results suggest that twenty directional canopy images per plot can provide LAI estimates that have an accuracy comparable to conventional hemispherical photography with twelve images per plot. To achieve this result, the mobile phone images must be taken at the 57° hinge angle, with four images taken at 90° azimuth intervals at five spread-out locations. However, more images may be needed in forests with large LAI or uneven canopy structure to avoid large errors. Based on these findings, we propose a gamified solution that could guide citizen scientists to collect canopy images according to the proposed scheme.
Az érdeklődés jelentősége a számviteltanulásban az első évi eredmények tükrében
Authors: Szijártó Boglárka , Frányó Zsófia Zsuzsanna , Estók Ágnes
Published: November 2024

A felsőoktatás feladata a jövő munkavállalójának tanulás iránti elköteleződését megalapozni. Napjaink egyetemi hallgatóinak (COVID-diák-generáció) a világjárvány alapvetően meghatározta tanulmányait: a pandémia nem kedvezett a tanulás hatékonyságának és a tanulók motivációjának. A számviteloktatás kontextusában több kutatás kiemelte a motiválás oktatói feladatait és az oktatók hatását a hallgatói teljesítményre. Jelen kutatás három hipotézise a hallgatók előképzettségével, az alapszak választásával, érdeklődésének változásával (látens módon az oktatók hatásával), illetve a hallgatók első évben elért eredményeivel kapcsolatos. Az adatgyűjtés kérdőívvel zajlott 2022 és 2023 őszén, a Budapesti Gazdasági Egyetem hallgatóinak körében. Az eredmények alapján a hallgatók előképzettsége bár meghatározza az alapszakválasztást (H1), de nem hozható összefüggésbe már az első éves eredményekkel sem (H2). A megkérdezett hallgatók többségének kezdeti, számvitel iránti érdeklődése pozitív irányba változott, amely változásban az oktatók előadásmódjának kiemelt szerepe van, és amely változás pozitív összefüggésbe hozható a tanulmányi eredményekkel (H3). A szerzők következtetése, hogy a hallgatók szakmai érdeklődésének felkeltése lehetséges és kiemelten fontos oktatói feladat.
Államszámvitel a helyi vezetés szolgálatában – A számvitel hozzájárulása az önkormányzati gazdálkodáshoz
Authors: Tóth Balázs , Hegedűs Szilárd
Published: November 2024

A hazai államháztartási számvitelben 2014-ben nyert teret az eredményszemléletű megközelítés. Az elmúlt évtized megfelelő időtávot jelent a rendszer működésének és közpénzügyi gazdálkodáshoz való hozzájárulásának tesztelésére. A témához kapcsolódó releváns szakirodalmak azzal érvelnek az eredményszemléletű adatok mellett, hogy ezzel javul a gazdálkodó szervezet transzparenciája, pontosabb és felelősségteljesebb lesz a gazdálkodás, a finanszírozás és a költségek nyilvántartása. Az eddigi kutatások jellemzően főként az eredményszemléletű számvitel bevezetésének körülményeit és várható potenciális hasznait vizsgálták, de nem tértek ki arra, hogy hogyan képes hozzájárulni az eredményszeméletű számvitel az önkormányzatok gazdálkodásához, mennyire tudja támogatni a helyi szintű vezetést döntéseik meghozatalában. A szerzők kutatási kérdésüket strukturált interjúk módszerével, kvalitatív kutatási módszertannal kívánták megválaszolni. Összesen hat, a témában járatos, magasan kvalifikált szakember véleményére alapozva megállapították, hogy az államháztartási számvitel jól működik, de jobbára csak a pénzforgalmi szemléletű költségvetési számvitelt alkalmazzák, míg az eredményszemléletű – annak ellenére, hogy a működés szempontjából nagyon hasznos – nem megfelelő kihasználtsággal működik a gazdálkodás funkcionális területein.
"O QUE TE CHAMA A ATENÇÃO? SE O JOGADOR ME ENCANTA, PASSO A PRESTAR ATENÇÃO EM OUTRAS COISAS",
Authors: Boehl Walter Reyes , Myskiw Mauro
Published: November 2024

Este artigo, oriundo de uma pesquisa de mestrado, investiga como os empresários de futebol tomam suas decisões sobre quais jogadores de futebol devem apostar. A pesquisa foi conduzida ao longo de dois anos em cidades do Rio Grande do Sul e Santa Catarina, utilizando a abordagem etnográfica multissituada. O estudo examina o corpo empírico, incluindo observações participantes junto a familiares e empresários, no entorno de centros de treinamentos e estádios de futebol. A relação entre empresários de futebol e jogadores também é abordada, com o objetivo de captar as perspectivas dos empresários sobre os tipos de jogadores de futebol.
EXCLUSÃO DA PESSOA COM DEFICIÊNCIA NAS CONCEPÇÕES HEGEMÔNICAS DE LAZER
Authors: Borges Monteiro Gustavo , Augusto Starepravo Fernando
Published: November 2024

As concepções hegemônicas de lazer centram a discussão na perspectiva dualista do lazer como contraponto ao trabalho, podendo, desta forma, não contemplar grupos não normativos que não se adequam a atividade laboral à forma ocidental. Diante disso, este texto tem por objetivo discutir se há a exclusão da pessoa com deficiência nas concepções hegemônicas do campo do lazer. Para isso foi feita uma revisão narrativa de autores clássicos (hegemônicos) e contemporâneos (críticos às concepções hegemônicas), como técnica de interpretação dos dados, elegeu-se a hermenêutica-dialética. Ao cabo da análise, surgiram três categorias: Trabalho, Tempo Livre e Exclusão/Inclusão Social. As categorias revelam que há uma exclusão da pessoa com deficiência nas concepções hegemônicas de lazer. Essa exclusão, contudo, além de uma limitação teórica, perpassa pelo reflexo da própria estrutura social, que ainda não é plenamente inclusiva. Nesse sentido, observa-se ainda uma incompletude nas concepções contemporâneas, que ainda necessitam de avanços.
LAZER NAS BRECHAS DA ESCOLA
Authors: Do Rocio Vieira dos Santos Karine , Rechia Simone Aparecida
Published: November 2024

Esse artigo tem como objetivo discutir o lazer vivenciado nas brechas dos tempos e espaços escolares. Essa face, por vezes oculta, velada e proibida, é pulsante nas vivências cotidianas formais e informais nas escolas. Metodologicamente seguimos os ritos da sociopoética, na qual é a partir da provocação de sensações e emoções que os dados são produzidos. Participaram da pesquisa crianças de turmas de 5.º ano do Ensino Fundamental. Ao fim, percebemos que o lugar do lazer na escola está na “clandestinidade”. Possível a quem se mantém atento às oportunidades e delas se aproveita, mostrando que, na escola, o lazer pode estar sendo vivenciado nas brechas dos tempos e espaços formais a partir das táticas criadas pelos estudantes.
CONTRIBUIÇÕES DOS ESTUDOS DO LAZER PARA A CONSECUÇÃO DOS OBJETIVOS DE DESENVOLVIMENTO SUSTENTÁVEL (ODS) – AGENDA 2030
Authors: Andrade Rubian Diego , Tavares Giselle Helena , Teodoro Ana Paula Evaristo Guizarde , Schwartz Gisele Maria
Published: November 2024

Os Objetivos de Desenvolvimento Sustentável (ODS) procuram abarcar as demandas ao desenvolvimento global, buscando oferecer melhorias nas condições da vida no planeta. Assim, este estudo objetivou apontar as possíveis contribuições de estudos envolvendo as atividades do campo do lazer, para a consecução e alcance dos ODS. Este estudo possui uma natureza qualitativa, do tipo revisão integrativa. Foi realizada uma incursão na produção bibliográfica expressa em periódicos nacionais e internacionais, via Google Acadêmico. Fez parte da pesquisa uma amostra intencional, composta por estudos que focalizassem algumas das atividades relacionadas aos sete conteúdos culturais do lazer e suas relações com os ODS. Foram encontrados artigos que traçaram relação dos estudos do lazer com os ODS. Os resultados deste artigo convocam a comunidade acadêmica para novos olhares sobre a temática, com intuito de se oferecer estratégias eficientes, capazes de agregar elementos à consecução dos ODS previstos na Agenda 2030 pelas práticas no lazer.
TRAJETÓRIA DA EDUCAÇÃO FÍSICA NO ENSINO MÉDIO
Authors: Ferreira Palha Filho Gilson , Costa de Azevedo Mello Rachel
Published: November 2024

O presente artigo tem como objetivo realizar uma revisão histórica sobre a Educação Física na Política de Ensino Médio no Brasil, com o intuito de captar  sua presença no nosso território, buscando traçar uma linha do tempo, abrangendo contextos, fatos e políticas educacionais formuladas no Brasil Império, na República, até os dias atuais e, ainda, sobre seus  desafios contemporâneos no contexto escolar da Reforma do Ensino Médio (Lei nº 13.415/17). A pesquisa é de cunho documental e possibilitou a reflexão sobre as políticas destinadas à educação física no Ensino Médio/Secundário contidas nas Constituições, Leis e Decretos republicanos, nas quais,  identificamos as influências determinantes para sua constituição nos contexto escolar, desde a ideia de mera ‘atividade’ até sua valorização como componente curricular e, contraditoriamente,  sua denominação de ‘estudos e práticas’ na Lei 13.415/17. Acreditamos que esta breve narrativa histórica sobre a Educação Física no Ensino Médio pode proporcionar uma reflexão crítica da trajetória nas políticas educacionais do Ensino Médio, entendendo fundamentalmente, a importância dessas políticas públicas para garantia dos direitos educacionais dos estudantes brasileiros.
APRESENTAÇÃO DO DOSSIÊ: LAZER
Authors: Da Silveira Raquel , Martins Bandeira Marília , Myskiw Mauro
Published: November 2024

Este número é fruto de um convite especial que recebemos da Editora Chefe da Revista Didática Sistêmica, Ângela Adriane Schmidt Bersch, em outubro de 2023, para viabilizarmos e organizarmos um dossiê que abordasse a temática do Lazer. Partindo da compreensão de que este fenômeno não representa uma questão banal ou menor na sociedade brasileira e latino americana, assumimos o desafio de abrir uma chamada pública para que pesquisadoras e pesquisadores que se dedicam a investigar o lazer pudessem submeter suas produções à Revista Didática Sistêmica. A referência inicial foi construir um dossiê em que essa temática fosse o elo entre investigações constituídas a partir de diferentes questões, abordagens teórico-metodológicas e disciplinares. Ficamos animadas e animado com o convite e imediatamente iniciamos o trabalho!
Adolfo Meisel Roca (2023). Santa Bárbara de las Cabezas: La gran hacienda del Caribe colombiano, 1742-1942. Editorial Uninorte.
Authors: Colmenares Guerra Santiago
Published: November 2024

Santa Bárbara de las Cabezas, la gran hacienda del Caribe colombiano, es un libro que nos cuenta la historia de la que muy probablemente fue la más grande hacienda ganadera de esta región, y probablemente una de las más grandes de todo el país, a lo largo de más de dos siglos, desde mediados del siglo XVIII hasta finales del XX. De por sí esta ya es una razón suficiente para atrapar la atención de cualquier lector interesado en conocer no solo la historia del Caribe, sino la de Colombia como una nación en donde los problemas de la distribución de la tierra le han salido tan costosos. Pero el libro no solo se queda en la historia de las tierras que conformaron la Hacienda sino que va más allá, al contar de forma paralela la historia de la familia Trespalacios y de Mier, fundadores y propietarios de la hacienda durante todo ese tiempo. En efecto, el trabajo de Meisel hace un repaso cuidadoso por la historia de Mompox en donde estas viejas familias de origen colonial se establecieron, logrando obtener títulos nobiliarios (marquesados) de la corona española.
Assessing Patterns of Tourism Seasonality in a Mixed Heritage Island Site
Authors: SHUMKA Laura
Published: November 2024

The main purpose of the paper is to make a ground investigation on island integrity and factors that are threatening conservation status. The island itself is part of a protected area i.e. National Park Prespa proclaimed in 1999 in Albania, while it holds other important designations as Ramsar site, and Biosphere Reserve. This approach looks primarily on particular impacts caused by tourism seasonality due to climate and geographic location of an iconic small island since it holds one of the regional most spectacular church of Post-Byzantine periods. Further on, the research examines motivation of tourist for visiting the island, considering resources as religion monuments, nature values, landscape and others. Also it examines seasonal patterns in tourism in terms of tourist arrivals mostly via small boats. To that fact, this case of analyze is studied by employing dedicated questionnaire and Gini coefficient along with Seasonality Indicator aiming to cover a time-frame of past ten years.
Social, Cognitive and Traditional Motives in Christmas Market Tourism: A Case Study from Poland
Authors: MŁYNKOWIAK-STAWARZ Anna , BĘBEN Robert
Published: November 2024

This study offers a novel and significant contribution to the understanding of cultural tourism by exploring visitor motivations at one of Poland's largest Christmas markets, situated in Gdańsk. While Christmas markets are deeply rooted in European tradition, research on their appeal in the context of contemporary consumer behaviour, especially in the face of globalisation and secularisation, remains limited. By examining a diverse range of motives - spanning from social gatherings and shopping to tradition and inspiration - this research provides a fresh perspective on how Christmas markets can cater to both traditional and evolving interests. The study’s insights highlight how event-driven tourism can effectively support regional visitation beyond peak tourist seasons, offering a model that could be applied to other locations seeking to expand their tourism appeal throughout the year. Furthermore, the findings emphasise the strategic importance of culturally significant events in strengthening the tourism economy and community engagement within the Baltic region and beyond.
EMPIRICAL ANALYSIS of the RELATIONSHIP BETWEEN OIL PRICE and TRADE BALANCE
Authors: Kahiloğulları Ahmet
Published: November 2024

The impact of the oil shocks in the 1970s and the acceleration of globalization since the 1980s have led to the emergence of a vast literature investigating the relationship between the growth in world trade volume and various macroeconomic variables related to oil prices. Due to its significance as a commodity in economic activities, oil prices have remained a closely monitored indicator to this day. The aim of this study is to analyze the relationship between oil prices and trade balance. The study is conducted for a panel consisting of 8 countries (Bangladesh, Brazil, Colombia, India, Mauritius, Pakistan, Turkey, and South Africa) covering the period from 2006 to 2021. The relationships between variables are analyzed using the Fixed Effects Model and the Driscoll-Kraay estimator. The results of the study indicate the presence of weak relationships between oil prices and trade balance in terms of the Fixed Effects Model, while strong relationships are observed when analyzed with the Driscoll-Kraay Estimator. The study also demonstrates strong relationships between GDP, exchange rates, and trade balance in both prediction models.
ANALYSIS OF FACTORS AFFECTING THE INTENTION TO PURCHASE ELECTRIC VEHICLES: A SYSTEMATIC LITERATURE REVIEW (SLR)
Authors: Putri Riri Ramadhani
Published: November 2024

Electric vehicles are a type of vehicle that is driven by an electric motor powered by a battery. Electric vehicles are gaining popularity worldwide due to increasing environmental awareness and various benefits such as reduced dependence on fossil fuels and being considered an efficient and sustainable mode of transportation. This research presents a comprehensive overview and bibliometric analysis of published studies related to consumer adoption/purchase intentions of electric vehicles (EVs) from 2014 to 2024. The Scopus database was used to extract the papers as it is considered the largest database of peer-reviewed academic publications colleagues. VOS Viewer software was used for bibliometric analysis of networks between authors, institutions, countries, publications, journals, and keyword occurrences. The research was conducted on March 23, 2024, which resulted in a total of 154 documents after exclusion using selected keywords. These findings show a sizable increase in publications regarding intentions to adopt electric vehicles over the past six years. China is the world leader in this research field, providing the maximum number of papers. Sustainability Switzerland Journal stands out as the most productive journal with the most publications. This analysis will help academics better understand historical trends, current challenges, and future research topics in the area of electric vehicle adoption/purchase intentions.
Analisa Kelayakan Fisik dan Daya Dukung Kawasan Wisata Pantai Empu Rancak, Karanggondang, Jepara
Authors: Srimaharani Kirana Indah , Susanto AB , Taufiq-SPJ Nur
Published: November 2024

Pantai Empu Rancak merupakan salah satu destinasi wisata unggulan yang terletak di Desa Karang Gondang, Kecamatan Mlonggo, Kabupaten Jepara dan memiliki potensi yang besar untuk menjadi salah satu destinasi wisata favorit di Jepara dan memerlukan analisa kelayakan fisik dan daya dukung kawasan agar dapat mengoptimalkan potensinya dan mengetahui kelayakan Pantai dari aspek fisik masuk kedalam kategori sesuai atau tidak sesuai untuk rekreasi Pantai. Penelitian ini bertujuan untuk mengetahui kelayakan fisik Pantai, Daya Dukung Kawasan dan kelayakan infrastruktur yang terdapat pada Pantai Empu Rancak.  Penelitian ini dilaksanakan pada 15 Februari 2024 dan 27 Maret 2024 di Pantai Empu Rancak, Kabupaten Jepara. Metode penelitian menggunakan metode deskriptif dengan menjabarkan secara umum kondisi yang ada di lokasi penelitian. Pengambilan data menggunakan metode survey dengan mengambil data secara langsung di Pantai Empu Rancak. Analisa kelayakan fisik menggunakan Indeks Kesesuaian Wisata dan Daya Dukung Kawasan untuk mengetahui jumlah perkiraan pengunjung per hari nya. Hasil Analisa kelayakan infrastruktur mencapai kategori layak dengan beberapa catatan perbaikan beberapa kategori seperti toilet, mushola dan warung makan. Hal ini menjadikan bahwa Pantai Empu Rancak masih sangat potensial untuk dikembangkan dari segi infrastruktur. Empu Rancak Beach is one of the leading tourist destinations located in Karanggondang Villlage, Mlonggo District, Jepara Regency and has great potential to become one of the favorite tourist destinations in Jepara and requires an analysis of the physical feasibility and carrying capacity of the area in order to optimize the potential and determine the feasibility of the beach from a physical aspect into the category of suitable or unsuitable for reaction. This research aims to determine the physical feasibility of the beach, the carrying capacity of the area and the feasibility of the infrastructure at Empu Rancak Beach. This Research was carried out on February 15, 2024 and March 25, 2024 at Empu Rancak Beach, Jepara Regency. The research method uses a descriptive method by describing in general the conditions that exist at the research location. Data collection uses a survey method by collecting data directly at Empu Rancak Beach. Physical feasibility analysis uses the tourism suitability index and area carrying capacity to determine the estimated number of visitors in a day. The research results show that Empu Rancak Beach has an average IKW of 97,96%, which means that the beach is very suitable as a beach tourism destination. The results of the analysis of the area’s carrying capacity based on the area size that were observed reached 789 visitors in a day. The results of the infrastructure feasibility analysis reached the feasible category with several categories such as toilet, prayer rooms and food stalls. This mean that Empu Rancak Beach still has great potential for development in terms of infrastructure
Dynamics of equilibrium line altitude in glaciers of the Monte Rosa massif in the Alps derived from Sentinel-2 satellite images
Authors: Kropáček Jan , Mehrishi Pragya
Published: November 2024

The equilibrium line altitude (ELA) is an immediate indicator of the mass balance of glaciers. The evolution of the ELA of four major glaciers in the Monte Rosa (European Alps) massif was investigated in this study. We used Sentinel-2 satellite images to derive the end-of-summer snowline altitude (SLA) as an approximation of ELA considering the fluctuations in the snowline at the end of the ablation season (from August to mid-October in 2016–2023). SLA was estimated as a percentile of the histogram of the DEM of each glacier with the applied snow-mask, based on the normalised difference snow index (NDSI). ELA was determined as the maximum snowline elevation reached in the season. We found the mean ELA for the studied period as 3560, 3230, 3430 and 3570 m above the sea level for Gornergletscher, Belvedere Glacier, Grenzgletscher, and Lys Glacier respectively. These differences are likely due to the variation in slope orientation and amount of snow accumulation. An increase in ELA was found for all the glaciers in the studied period amounting to 22.7, 8.3, 33.1 and 27.0 m/y respectively. The pattern of temporal behaviour was similar for all the glaciers, although we expected a different behaviour of the Belvedere Glacier, which is characterized by various local effects, such as frequent avalanching and rough topography.
In Search of the Functions of the Legal System: Axiomatic and Methodological Stages
Authors: Krešić Mario
Published: November 2024

The theory of artifacts can be understood as primarily focusing on function when counting something as an artifact. With that starting point, projects aimed at the identification of the function of law contribute to arguments about categorizing law as an artifact. The purpose of this study is to highlight the challenges of this endeavor. Before beginning with search for law-functions, questions about the postulates on the relations between an artifact, law, and function (axiomatic stage) have to be addressed and the proper methodological approach must be found which is capable of addressing the contingency problem (methodological stage).
K některým problémům spojeným s pokračováním v trestném činu, trvajícími a hromadnými trestnými činy
Authors: Šámal Pavel
Published: November 2024

The journal article discusses the problems associated with crimes committed over a longer period of time, in particular in the context of the Supreme Court’s decision of 23 September 2020, file number 8 Tdo 866/2020, which dealt with whether the offence of stalking under section 354 of the Criminal Code was a continuation of an offence or an ongoing one. When discussing this decision in the Criminal Division of the Supreme Court, a debate was held as to whether it was correctly an ongoing or cumulative offence. The article deals with the arguments that have been made in this regard and concludes that it is an ongoing offence. In that context, it also addresses the issue of the so-called coherent actions, and on the basis of analysis of Supreme Court jurisprudence, that these are not another category of crimes characterised by a longer period of committing, but are merely an adjunct in theory and practice of differentiated categories continuation of offence, ongoing offence, and cumulative offence which serves only to refine and distinguish them correctly in specific cases under assessment.
Lze při zohlednění subjektivního a objektivního kritéria menšinové definice příslušníky LGBTI komunity považovat za menšinu?
Authors: Polendová Markéta
Published: November 2024

The publication focuses on the status of LGBTI persons in the context of minority law, which is traditionally associated with national, linguistic, and religious minorities. It aims to evaluate the potential of the LGBTI community to fulfil the defining characteristics of a minority. The author analyses the features of the minority definition, i.e., the objective and subjective criterion, and subsequently evaluates the possibility of fulfilment of the individual characteristics by the LGBTI community. Problematic aspects arising in connection with the specific nature of the LGBTI community, especially its internal diversity and the difficult objectification of the differentiating characteristics of individual members, are emphasised. The author concludes that provided the specific features are dully considered, the LGBTI community in principle meets both the objective and the subjective criterion of the minority definition.
Peníze, nebo (soukromý) život! Ochrana osobních údajů v obchodním modelu pay or okay
Authors: Bónová Kristýna
Published: November 2024

This article discusses the controversial pay or okay business model and examines its legal prerequisites and implications when used on online platforms within the European legislative environment. The analysis begins with a review of a decision by the Court of Justice of the European Union, which deemed this model legal, followed by exploration of its theoretical and practical problematic aspects. Criticism of the model primarily focuses on freely given consent and the pricing of the “pay” option. Consequently, the European Data Protection Board and certain national authorities have formulated positions and outlined criteria to consider when contemplating the implementation of the pay or okay business model.
Zpráva z mezinárodní vědecké konference Zákoník práce a sociální zabezpečení 2024
Authors: Štěpánková Kateřina
Published: November 2024

Conference report
Income Taxation Conference
Authors: Málek Ondřej
Published: November 2024

Conference report