bluuebunny/crossref_metadata_2025 huggingface dataset:
Preference Level for Glutinous Corn and Sweet Corn as Local Food in Sigi Regency
Authors: Rahayu Heni SP , Saidah  , Risna  , Nirma Wahyuni Andi , Purna Raharjo Yogi
Published: November 2022

Corn is widely used as feed especially poultry. Nevertheless, corn is also a source of local food that can be developed in a food diversification program. The nutrients contained in corn especially carbohydrates, are not inferior compared to rice. Types of corn which potential as local food include glutinous corn and sweet corn. As a local food material, it is necessary to know the level of user preference before it is widely developed. This study aims to determine the level of preference for glutinous corns and sweet corn as local food. The research was conducted in July 2020 in Sigi Regency. The method used is an organoleptic test namely a hedonic test or a preference test for white glutinous corn, purple glutinous corn, and yellow sweet corn. Data analysis was performed using one-way analysis of variance followed by the DMRT test. The results of the analysis showed that there was a significant difference in the color and flavor parameters, while in the texture and aroma parameters were not significantly different. Based on the results of further tests, purple glutinous corn and yellow sweet corn are preferred in terms of color and flavor, so they are recommended to be developed as local food materials in Sigi Regency.
The Factors Affecting Business Innovation to Improve the MSME Competitiveness in Medan City
Authors: Sibuea Mhd. Buhari , Sibuea Faiz Ahmad , Ramadhani Rizka
Published: November 2022

The development of Micro, Small, and Medium Enterprises (MSMEs) in Medan is still unstable. This condition is related to limited working capital, low-quality human resources in accessing information and managing capital, weaknesses in obtaining market opportunities and increasing market share, and limited product marketing. The latest innovations are needed to increase the MSMEs' competitiveness. This study aims to analyze the performance of MSMEs to increase competitiveness and determine the effect of innovation on MSMEs in Medan. The study included 20 business actors from Medan Johor, Medan Sunggal, Medan Denai, and Medan Marelan. This study uses a quantitative descriptive method with purposive sampling. The respondents were based on agribusiness in culinary and processed derivative products. Data were analyzed using a Likert scale and binary logistic regression. The results showed that business actors' performance by analyzing opportunities to increase competitiveness resulted in a very good category. The highest results were on certification indicator, while the lowest were on service indicator. Meanwhile, the factors influencing MSME innovation were level of education and information technology. The results recommend that government should train Medan City MSMEs in online sales applications to increase their market share. Furthermore, to support a more accessible certification and licensing process, BPOM should socialize more with business actors.
The efficiency of shallot farming in the highlands and lowlands in Magetan Regency, East Java Province
Authors: Istiyanti Eni , Maylani Krismonika
Published: November 2022

Shallots are suitable for farming in the lowlands, however farmers in Magetan Regency mostly plant shallots in the highlands. Shallots farming in the highlands to require special treatment in the production process to affect the use of production factors. This study aims to analyze the factors influencing the production and efficiency of using production factors in shallot farming. Determination of the research location purposively considered Magetan Regency as a shallot farming area in both the highlands and lowlands. Twenty-five farmers in the highlands and 25 in the lowlands were selected using a simple random sampling method. The analysis technique employed the Cobb-Douglass production function. The efficiency of production factors was measured based on the comparison between the marginal value product and the input price. The results revealed that the production factors of liquid pesticides, labor, and adhesives significantly influenced the production of shallots in both the lowlands and highlands. The use of liquid pesticides was inefficient, and the workforce has not been efficient. Therefore, farmers should reduce liquid pesticides and increase the workforce to maximize profits from shallot farming.
Competitiveness of Indonesia's edible-nest swiftlet exports
Authors: Juliani Purba Helena , Supriadi Yusuf Eddy , Hestina Juni , Erwidodo  , Hasri Azahari Delima , Wahida  , Betsi Dabukke Frans , Elizabeth Roosganda
Published: November 2022

Competitiveness is one of the essential factors in increasing exports of agricultural commodities to export markets. Indonesia is a significant producer and exporter of swiftlet nest products globally. This research aims to study Indonesian edible-nest swiftlet competitiveness and development potential in the primary export destination market in the RCEP (the Regional Comprehensive Economic Partnership Agreement) area. The study uses secondary export-import data between countries sourced from UN Comtrade from 2009 to 2019. Analyze competitiveness and potential for product development using the RCA, RSCA, EPD, and IIT methods. The study results show that, comparatively, Indonesian swiftlet nests are competitive in China, Malaysia, Vietnam, and Singapore markets and are not competitive in Australia, Japan, South Korea, New Zealand, Cambodia, Laos, and Thailand. The export markets of China and Vietnam are promising because they have reached the ideal position of a rising star. Meanwhile, the Thai market has the potential to be developed because the export market is still growing. The Singapore market also needs to be considered to create high-value processed products because it has relatively strong integration with the Indonesian swallow nest production structure.
The contribution of integrated farming to fulfill the food consumption of Payung Island community's
Authors: Nurmalinda  , Soraya Ammatillah Chery
Published: November 2022

The Payung Island’s peoples depend on food supplies from outside, so they are very vulnerable to food shortages. One of the efforts to provide food sources for islanders is integrated farming. This study aimed to analyze the contribution of integrated farming to meet the needs of fruit and vegetable consumption of the Payung Island residents. The study was conducted from September 2018 - September 2019 in Payung Island, Thousand Island, by involving 38 respondents. Contribution analysis was used to analyze the contribution of integrated farming to the fulfillment of the Payung Island community's food consumption. The results showed that the current average food consumption of the Payung Island residents was lower than the residents of mainland Jakarta. The contribution of integrated farming to fulfill the vegetable and fruit needs of the Payung Island residents ranged from 47% to more than 100%.
The effect of agricultural productivity and fossil energy use on CO2 emissions in the Philippines; an environmental Kuznets curve approach
Authors: Suwandaru Agung , Rooswidjajani  , Brimantyo Harril
Published: November 2022

This study examines the relationship between agricultural productivity, fossil energy use, urbanization, and economic growth on CO2 emissions. We use data from 1970 to 2015 from the Philippines with data analysis using the ARDL and cointegration. The results confirm that all models have a positive outcome on CO2 emissions. The use of fossil energy and urbanization have a significant effect on CO2 emissions. However, agricultural productivity and economic growth have no significant effect on CO2 emissions. The model shows that the Kuznets curve hypothesis does not happen in the Philippines context. According to the results, the study suggests that the government should pay more attention to environmental impacts and development. Mitigation of the environmental efforts can be supporting the use of renewable energy, low emissions machines, and the effective implementation of environmental regulations.
The Effectiveness of The Dissemination Method on Soybean Technology Innovation
Authors: Chanifah  , Triastono Joko , Susila Arif , Praptana R. Heru , Jauhari Sodiq , Murtiati Sri
Published: November 2022

The study aims to analyze the increase in farmers' knowledge and attitudes to technological innovations in soybean production using the dissemination method. The study was carried out from October 2020 to January 2021 by combining the dissemination of meetings information and technology demonstrations in the Grobogan Regency. Data collection used a survey before (pre-test) and after (post-test) evaluation in the dissemination implementation. Respondents were determined using purposive sampling, 35 cooperative farmers in disseminating soybean technology innovation activities. The data were descriptively analyzed using the average value, percentage, and paired sample t-test. The enhancement of farmers' knowledge is analyzed based on the percentage of correct answers by farmers. Changes in farmers' attitude-response are implemented into a radar graph. The study results showed that after attending meetings information and technology demonstrations, the farmers' knowledge of soybean production technology increased by 21.1%. The pre-test results showed that farmers already had a positive attitude and response to soybean production technology, with an average score of 2.64. The post-test results showed that farmers' positive attitudes and responses increased, with an average score of 2.84.
Dairy cattle manure utilization by smallholder dairy farmers in West Java, Indonesia
Authors: Ariningsih Ening , Erwidodo  , Riski Irawan Aldho , Purwati Saliem Handewi
Published: November 2022

Besides producing milk and other products, dairy farms also generate manure polluting the environment. This study aims to identify smallholder dairy farmers' utilization of dairy cattle manure in West Java and the reasons that hinder it. This study uses IndoDairy end-line survey data, covering 410 dairy farmers in four districts in West Java (Bandung, Garut, Cianjur, and Bogor) in December 2021. A qualitative descriptive analysis was employed. The results show that only 42.8% of smallholder dairy farmers in West Java utilized cattle manure for fertilizer, a source of energy (biogas), and/or media for raising earthworms. At the same time, the rest, 57.2%, discharged it into their surroundings. Among the reasons the smallholder dairy farmers did not appropriately manage the manure were as follows: too difficult to adopt the technology (27.5%), high adoption cost (21.0%), farmers are already satisfied with the current practices (10.1%), limited input availability (9.5%), limited land (9.0%), lack of information of technology (8.1%), and many labors are needed (7.8%). Given the environmental problem that can be caused and the economic potential of dairy waste, the government should provide efficient and practical dairy waste management technology accompanied by intensive training and assistance.
Dynamics of the Samberembe Young Mina Farmer Group in Mina Rice Farming in Pakem, Yogyakarta
Authors: Indardi  , Marla Jessica
Published: November 2022

This study aims to describe the dynamics of the Mina Muda Samberembe farmer group in the Mina Padi farming business in Pakem, Sleman. This study uses a qualitative descriptive method. The location was chosen on purpose. The selected respondents are those who are active in various group activities, so they understand the dynamic processes that exist within the farmer groups. In-depth interviews were conducted to obtain various information related to group dynamics to saturation. It was found that there were 11 respondents, consisting of supervisors, chairmen, secretaries, and other administrators, as well as members. The findings of the study on group dynamics show that there is movement, change, and development in the elements of purpose, structure, maintenance, cohesiveness, atmosphere, and leadership. The goals and structure of the group indicate progress towards progress. Group maintenance is carried out by having regular meetings or meetings at coffee shops. It was found that there was group cohesiveness, they had a feeling of belonging and there was a sense of interest in activities. Group atmosphere: a sense of kinship, feeling at home, easy to adjust in activities, and immediately get along after tension occurs. Existing leadership stands for: transparency, experience, friendliness, and embracing.
Communication Process in Empowering The Disabled Group of Argodadi Pinilih in Sedayu, Yogyakarta
Authors: Indardi
Published: November 2022

This research aims to comprehend the communication process in empowering a disabled group, including extension and training activities. This research employed a qualitative paradigm and a descriptive method. Hence, the data were analyzed in a descriptive qualitative way. The descriptive qualitative method began with collecting data and drawing conclusions or general characteristics. In-depth interviews and triangulation procedures were applied to gather information from the disabled group members, comprising 12 key informants, until the information was saturated. The study revealed that the communication process in Sedayu’s socialization activities for empowering the disabled group members generally came under the “extremely effective” category. The category of communication process varied. The communication process of many informants fell into the “moderately effective” category, and only one belonged to the “less effective” category. It was determined that the communication process for the “training process” indicator in the empowerment training of the disabled group fell into the “extremely effective” category. In general, the “implementation effectiveness” of the communication process of mentoring activities after training was “less effective”. Following the training, intensive assistance should be provided to sustain the acceptance of innovation by the disabled group in Sedayu.
Strengthening village community empowerment by optimizing ecotourism with participatory approach in Bumiaji
Authors: Priambodo Magistyo P. , Wahjoedi  , Ibnu Abbas Muhammad H. , Yunikawati Nur A. , Prastiwi Lustina F.
Published: November 2022

The development of tourism has brought many changes in economic activity. Region with tourism objects will create jobs opportunity and improve the quality of infrastructure to support it. Bumiaji is one of the areas in Batu City which has many natural tourist attractions. Development of tourism in Bumiaji leads to ecotourism which favored by local people and outsiders. The natural potential supporting ecotourism emerge to be developed. This study reveals how the community empowerment strategy implemented by the government for developing ecotourism villages and how community participation’s level in the Ecology based Tourism Village in Bumiaji. The purpose of this study was to determine the strategy of strengthening empowerment and to determine community participation in the development of ecotourism village. This type of research is a field research using a qualitative approach with descriptive analysis. Sources of data in this study consisted of primer data and participants responses obtained through interviews, observation and documentation. Findings of the research stated that the strategy of increasing community empowerment which was accommodate by government to develop Bumiaji Ecological Tourism Village, was through a strategy with the stages of awareness, capacity, and empowerment. The local community in the Bumiaji Ecological Tourism Village also highly participates in supporting the optimization of ecotourism in all aspect.
Existence Pilgrim Kawi’s: Sustainable Rural Tourism Approach for Sumbertempur
Authors: Yunika Puspasari Emma
Published: November 2022

Sumbertempur Lor that has potential natural resources that are used for food needs and as a natural and religious tourism object. This rural has the develop both in terms of infrastructure basic and other facilities. The structure or economic level of the Sumbertempur village community affects the dynamics of the development of community civilization. Community Based Tourism as a tourism village development concept by involving and placing local communities who have the authority to manage and develop their own areas to improve the welfare of local communities and the sustainability of local culture and natural resources. This study provides recommendations for the development and management of the Sumbertempur tourism village using the Community Based Tourism (CBT) concept approach. This research uses qualitative analysis method with RRA technique. The results of the research are then used as input for the development and management of the Sumbertempur tourist area which is a strategy for developing and managing the Sumbertempur tourism village based on local self subsistent.
Level of community satisfaction on online community empowerment activities in Special Region of Yogyakarta
Authors: Widodo Aris Slamet , Rachman Agatha Zenobia
Published: November 2022

During covid-19 pandemic, empowerment program was carried out by online. The Community Service Institute (LPM) of Universitas Muhammadiyah Yogyakarta has implemented an online empowerment program throughKuliah Kerja Nyata(KKN). Online media such like social media, video conference, and messaging application are used to support the implementation of online empowerment program. It is necessary to know the level of community satisfaction of online community empowerment programs as an evaluation material for future empowerment activities. This study aims to analyze the level of community satisfaction and the factors related to the level of community satisfaction towards the village community empowerment program. The location determination was conducted Proportionate Random Sampling in Province of Special Region of Yogyakarta with 84 respondents selected through Random Sampling method. The result shows that (1) The level of community satisfaction on program suitability, program implementation, and problem solving classified at satisfying level due to the average number at 2,34. (2) Factors related to community satisfaction such as accuracy of innovation and mentoring process have significant correlation with community satisfaction with a 99% confidence level.
Growth performance of 'Mentik Wangi' rice (Oryza sativa L.) with Zn nano application on drought stress
Authors: Zaki Abdul Ghaffar Amiruddin , Sakya Amalia Tetrani , Pujiasmanto Bambang
Published: November 2022

Mentik wangi rice (Oryza sativa L.) is a variety originating from Magelang Regency, Central Java. Mentik wangi has the advantages of fragrant smell, fluffier texture, and high market demand. The weakness of mentik wangi rice is long life (4 months), long stems, easy collapse. The problem of long-lived rice if the planting period enters the dry season and the availability of water is limited, it will have an impact on productivity. This study aims to overcome problems by applying Zn nano to drought stress. Zn is one of plant microelements that functions as auxin biosynthesis, cell elongation, stem segments, and enzyme activator. Enzyme activators function in slowing the increase in reactive oxygen species (ROS) during drought stress, maintaining physiological resistance and rice growth. The study was conducted with a factorial completely randomized design in a screen house. The results showed Zn nano maintains yield and plant growth under stress. The most optimal dose. However, there is a tendency at the 3.75 ppm Zn nano dose to get low yields, it is suspected that if an excessive dose of Zn causes poisoning in plants. The application of Zn nano is optimal when applied under stressed conditions compared to normal conditions.
Plant Performance and Added Value of Soybean Farming by Tillage and Plant Spacing
Authors: Triastono Joko , Chanifah  , Susila Arif , Murtiati Sri
Published: November 2022

This study aimed to determine plant performance and added value of soybean farming by applying tillage and plant spacing. This study was conducted by two treatments, namely treatment I: no-tillage and scatter planting system on soybean farming, and treatment II: tillage and plant spacing on soybean farming. Primary data were in the form of plant performance, production, and soybean farming. The data were analyzed descriptively using average plant growth and productivity, RCR, BCR, and MBCR. The results of the study showed that the soybean farming with tillage and plant spacing resulted in better growth, a higher number of branches, number of pods, and productivity than the existing farmer. The soybean productivity increased by 19.73%. Tillage and plant spacing were proven to provide added value, i.e., increasing farmers' income by IDR 3,808,000/ha (an increase of 19.72%) and farmers' profits by IDR 2,523,682/ha (an increase of 26.61%). Even though the proportion of costs increased by 13.07%, there was a higher increase in the proportion of profits by 21.01%. The MBCR value of 1.96 showed that when the farming cost increased by IDR 1,000 due to tillage and plant spacing, the profit increased by IDR 1,960.
Vamas 1, a new early root bulking, high-yielding, high-starch content cassava variety
Authors: Sholihin
Published: November 2022

A good variety of cassava is important factor in increasing the productivity. If the productivity of cassava is increase, the competitiveness of cassava will increase. Vamas 1 is new variety released 2020 by Indonesian Government. Based on multi-location trial during 2015-2018 in 8 location in Lampung, the fresh tuber yield in 7 months of Vamas 1 was 25% higher that UJ3, equal to IDR 64,600,00,-/ha if the price of cassava IDR 1000,-/kg and 15% higher than UJ5, equal to IDR 6,460,000,-/ha. Starch yield of Vamas 1 was 39% higher than UJ3, equal to IDR 16,056,000,-/ha and 23% higher than UJ5, equal to 10,736,000,-/ha. Plant height of Vamas 1 was lower than UJ5. Starch content of Vamas 1 was higher than UJ3 and UJ5. Vamas 1 was shown moderately resistant against mite insect under artificial screening which is similar to UJ3 and UJ5. Vamas 1 has shown moderately resistant to cassava root rot desease under artificial screening, while the checks showed the susceptible. HCN content of fresh tuber of Vamas 1 was 19.68 ppm less than UJ3 (48.9 ppm) and UJ5 (40.56 ppm) as checks.
The effect of adding curcuma powder on the quality of the active components in instant cocoa drinks
Authors: Nurhafsah  , Laboko Asriani I , H Rahmi , Andriani Ida , Fitriawaty
Published: November 2022

Instant drinks in powder-shaped drinks are made from foodstuffs such as fruits, spices, grains, and leaves. The instant cocoa drink is made from cocoa powder with Curcuma powder which has a functional effect due to the content of polyphenols and curcumin in the ingredient. This study aims to determine the scope of polyphenols, curcumin, and antioxidant activity associated with the quality of cocoa instant drinks as functional drinks. The study was conducted using an experimental method, using a complete randomized design (CRD) of 1 factor with three-time repetitions. The results showed that the treatment with ginger as much as 18 grams had polyphenol levels of 13.11 ppm and curcumin levels of 3 ppm. The statistical tests showed an unreal influence on polyphenol levels and very noticeable differences in curcumin levels. The highest antioxidant activity was found in instant drinks without the addition of Curcuma at 11.42 ppm. Likewise, the acceptance rate of panelists for scent and taste has a score of 5 and 4, respectively. The three studies differ markedly at the 5% level. The highest water content is found in the addition of 12% ginger, with a moisture content of 4.65%.
Introduction of Garlic Cultivation Technology Packages in West Java, Indonesia
Authors: Ruswandi Agus , Dianawati Meksy , Winara Aji , Asfiya Wara , Haryati Yati , Cartika Ika , Merdeka Efendi Agnofi , Swestiani Dila
Published: November 2022

Massive import of garlic products has caused a declining interest of Indonesian farmers to plant garlic due to losing competition in clove size and lower selling price. This has discouraged the farmers from applying the innovation of garlic farming technology that caused low garlic productivity in Indonesia (8.7 t/ha). The purpose of this research was to improve the technology package of garlic cultivation at the farmer level. The study was conducted from July to October 2021 in Cianjur Regency, West Java, Indonesia. The technology packages experimental design was randomized block design with nine replications. The technology packages tested were farmer’s technology package, introduced technology package-1, and introduced technology package-2. The components of the technology package tested were cultivar, mulch types, number of cloves per hole, biofertilizer, biopesticide, and chemical fertilizers. The observed variables were plant growth, bulb yield, and input-output of farming. The results showed that the technology package introduction could increase the plant performance, namely the plant height, stem diameter, bulb fresh weight and bulb diameter. The highest R/C ratio was reached by the technology package introduction-1 (1.47). The introduced technology package-1 was more profitable than package-2 as indicated by the MBCR value of 12.46 and 8.83 respectively.
Response of Growth and Yield of Shallots to Various Types of Fertilizer in North Minahasa regency
Authors: Tandi Olvie Grietjie , Amin Mirawanty , Rawung Jefny B.M. , Sondakh Joula , Rembang Janne W. , Yusuf
Published: November 2022

Shallot (Allium cepa L.) is one of the strategic horticultural commodities in North Sulawesi which has high economic value with increasing demand Increased demand must be balanced with increased production that can meet the community's need for shallots. Increasing the production of shallots can be done by fertilizing. The study aimed to examine the growth and yield response of shallots to various types of fertilizers. The research was conducted in Pamuli Village, North Minahasa Regency, with an altitude of 100 m above sea level from April to December 2018. The study used a Randomized Completely Block Design (RCBD) with 4 treatments. The treatment was repeated four times so that 16 experimental plots were obtained. The results showed that from 4 fertilization treatment used, the best treatment was D = NPK Ponska + KCl + Feripos + Manure 10 t ha-1 gave the highest growth, gave the highest growth, namely, plant height, number of leaves and number of t bulb and also the highest yield.
The effectiveness of compost and manure on hot chili production in North Sulawesi
Authors: Erik Malia Ibrahim , Rembang Janne H.W. , Nanny Salamba Herlina
Published: November 2022

North Sulawesi is Famous as spicy culinary in Indonesia, therefore hot chili become the most important vegetable commodity in this region. An experiment to observe the influence of compost and manure on hot chili production has been conducted at Pandu Experimental Station in January to September 2018. The treatments were designed into RCBD proceeded to the Least Significant Difference Test (LSD test). Six treatments were applied, Control, without fertilizer; Inorganic fertilizer; Compost; Manure; Compost +inorganic fertilizer and Manure + inorganic fertilizer. The main parameter tested is the fresh fruit weight shown that the best treatment obtained is the treatment compost+ inorganic fertilizer, the total fresh weight gotten within 8 months productive age is 742 gr per plant, followed by the Manure + inorganic 696 gr per plant, these significantly higher than other treatments. The compost treatments are relatively better than the commercial manure due to its well decomposition of compost compared to the commercial manure. Financially, the farming also is feasible where R/C Ratio were above 1.2. The R/C Ratio were 2.83; 2.42 and 1.41 respectively for treatment E, B and A.
Components of environment affecting the reproduction of powder beetle Sitophilus zeamais (motsch.)
Authors: Arrahman Ayyub , Sebayang Amelia , Jamaluddin F. , Mirzam Hishar , Djaenddin Nurasiah , Suriani  , Pakki Syahrir , Saenong Sudjak
Published: November 2022

Several factors that significantly affect the reproduction of powder post beetles were food, moisture content, temperature, humidity, light, air/aeration, and the presence of natural enemies. This paper reviews the environment of the components that affect the reproduction of the powder post beetles Sitophilus zeamasi Motsch. Carbohydrates (sucrose and fructose) are the most significant energy source for the reproductive system and life span. In contrast, proteins consisting of amino acids such as arginine, lysine, leucine, isoleucine, tryptophan, histidine, phenylalanine, methionine, valine, and threonine, as well as components of fat, fatty acids, and sterols, are needed by insects for their energy supply and wing growth. The development of the powder post beetle population is rapid if the moisture content of the stored material is more than 15%. Temperature is also very influential on the reproduction of powder post beetles. The optimum humidity for this pest is around 75%. The next component is light, whereas light (dark and bright conditions) affects insect behavior in choosing food and reproducing (copulation and laying eggs). Another component is oxygen, whereby oxygen levels in the air must be more than 2%. If the CO2 level in the storage room is above 40%, then the pest in all stages will perish.
Developing a scale of self-efficacy perceptions in flipped learning model
Authors: Kadıoğlu Nagihan , Özyalçın Oskay Özge
Published: November 2022

This study aims to develop a valid and reliable scale of selfefficacy perception in order to identify pre-service teachers’ perceptions of self-efficacy in flipped learning model. The study group was composed of 496 pre-service teachers who attended a university. First, the factor intended to be measured was determined while developing the scale. Then, the relevant literature was reviewed, the pool of items was formed and the way of measurement was evaluated. The scale items were created in 5pointed Likert type. They were graded as 1: “I absolutely disagree”, 2: “I disagree”, 3: “I am indecisive”, 4: “I agree” and 5: “I absolutely agree”. The scale was decided to have two factors and 19 items according to the Exploratory factor analysis done to determine the construct validity of the scale. Confirmatory factor analysis was done so as to confirm the accuracy of the decided construct, and according to the analysis, the fit indices were found as X2/df=2.775; RMSEA=.060; CFI=.943; GFI= .917 and NFI=.914. The Cronbach’s Alpha reliability coefficient was found as .927. It can be said on the basis of the findings obtained here that the scale of self-efficacy perceptions in flipped learning which was developed for preservice teachers was valid and reliable for use as an instrument of measurement.
Choice of conflict resolution strategies in negative emotional states
Authors: Savchenko Olena , Kovalkova Tetiana , Lovka Olga , Boychuk Olena , Kostikova Olga
Published: November 2022

The article presents the results of checking the hypothesis that the choice of conflict resolution strategy depends on the negative emotional states (anxiety, frustration, aggression, rigidity). The Rosenzweig Picture-Frustration test, «Anxiety. Frustration. Aggression. Rigidity (AFAR)» test, Thomas-Kilmann Conflict Mode Instrument (TKI) have been used for diagnosis of participants` psychological features. Students of Ukrainian universities have formed the sample. Correlational analysis was performed (SPSS 17.0) to identify the associations between emotional states and behavioral reactions. An association has been established between the state of rigidity and the application of the competing strategy (negative), avoiding (positive); between the state of frustration and the frequency of application of competing (negative), accommodating (positive). The results showed that the possibility of implementing a strategy of avoiding in a state of rigidity is associated with unpreparedness for extrapunitive reaction and expectations that the situation will resolve itself (impaunitive reaction). Therefore, the connections between negative emotional states and the choice of poorly productive conflict resolution strategies may depend on protective mechanisms that are activated in a state of frustration.
Frailty-Diagnostik in verschiedenen AINS-Settings
Authors: Drewniok Nils , Mörgeli Rudolf , Eckardt-Felmberg Rahel
Published: November 2022

Das Vorliegen eines sog. Frailty-Syndroms („Gebrechlichkeit“) ist für den postoperativen Verlauf ein entscheidender Faktor. So kommt es, auch durch eine zunehmende Fokussierung auf die
patientenzentrierte Versorgung, zu einer erhöhten Nachfrage nach Instrumenten, die den Patient*innenstatus umfassender beurteilen und Krankheitsverläufe vorhersagen können. Der Beitrag
stellt die 3 führenden Modelle zur Frailty-Diagnostik vor.
An apparatus for in-vacuum loading of nanoparticles into an optical trap
Authors: Weisman Evan , Galla Chethn Krishna , Montoya Cris , Alejandro Eduardo , Lim Jason , Beck Melanie , Winstone George P. , Grinin Alexey , Eom William , Geraci Andrew A.
Published: November 2022

We describe the design, construction, and operation of an apparatus that utilizes a piezoelectric transducer for in-vacuum loading of nanoparticles into an optical trap for use in levitated optomechanics experiments. In contrast to commonly used nebulizer-based trap-loading methods that generate aerosolized liquid droplets containing nanoparticles, the method produces dry aerosols of both spherical and high-aspect ratio particles ranging in size by approximately two orders of magnitude. The device has been shown to generate accelerations of order 107 g, which is sufficient to overcome stiction forces between glass nanoparticles and a glass substrate for particles as small as 170 nm in diameter. Particles with sizes ranging from 170 nm to ∼10μm have been successfully loaded into optical traps at pressures ranging from 1 bar to 0.6 mbar. We report the velocity distribution of the particles launched from the substrate, and our results indicate promise for direct loading into ultra-high-vacuum with sufficient laser feedback cooling. This loading technique could be useful for the development of compact fieldable sensors based on optically levitated nanoparticles as well as matter–wave interference experiments with ultra-cold nano-objects, which rely on multiple repeated free-fall measurements and thus require rapid trap re-loading in high vacuum conditions.
Field inversion for transitional flows using continuous adjoint methods
Authors: Hafez Ahmed M. , Abd El-Rahman Ahmed I. , Khater Hany A.
Published: November 2022

Transition modeling represents one of the key challenges in computational fluid dynamics. While numerical efforts were traditionally devoted to either improving Reynolds-averaged Navier–Stokes-based turbulence modeling or developing scale-resolving simulations, cautious attention has been recently given to field inversion and machine learning techniques. This paper discusses an updated development of field inversion model for transitional flows based on k–ω shear stress transport model using the continuous adjoint approach, instead of the typical discrete adjoint method. The original model is modified by multiplying the production term of the turbulent kinetic energy equation by a spatially varying discrepancy function η(x). The adjoint equations and the relevant boundary conditions are specifically derived and integrated in OpenFOAM. The present model is validated using two zero pressure-gradient and four non-zero pressure-gradient from flow-over-flat-plate T3-series test cases. The gradient descent method is employed in the optimization process to minimize the discrepancy in the calculated shear stress. The inferred solution indicates a smooth transition to turbulence at the reported critical Reynolds numbers. The optimized model significantly improves the predictions of skin-friction coefficients, originally incorporated in the objective function. To demonstrate the usefulness of the present approach, the investigation is further extended to determine both velocity and shear Reynolds-stress profiles, which to our knowledge has not been reported before. Furthermore, a reduction in the percentage error from 50.2% to 7.3% is well observed in the predicted boundary layer thickness considering the laminar regime in the T3C5 test case.
Sound generated by flow over two traveling wavy foils in a side-by-side arrangement
Authors: Zhao Cheng , Zhang Tao , Yang Yan , Dong Haibo
Published: November 2022

Numerical simulations are employed to investigate the sound generated by flow over two traveling wavy foils in a side-by-side arrangement by an immersed-boundary-method-based hybrid approach. The effects of Strouhal number (St), phase difference, and lateral spacing (S) between the foils on the flow performance and the sound pressure field are examined. The results imply that the sound produced by a single foil is dominated by the lift dipole, and that the low-amplitude–high-frequency foil can achieve higher thrust and higher sound pressure compared to the high-amplitude–low-frequency foil. For the two side-by-side foils (i.e., an in-phase and anti-phase foil system), the sound pressure fields exhibit distinct features. Specifically, a dipole-like pattern appears during in-phase motion, whereas a monopole-like pattern exists during anti-phase motion. Moreover, the magnitude of the sound pressure increases slightly with increasing S in the in-phase case. However, the sound pressure decreases rapidly when S < 0.7L (foil length) and then remains nearly unchanged when S > 0.7L in the anti-phase case. Furthermore, the anti-phase foil system could improve thrust by increasing power consumption and could generate lower sound pressure compared to the in-phase one due to the distinct differences in wake patterns. The present work is expected to improve the understanding of sound-generation mechanisms of fish-like locomotion and collective motion for relevant biomimetic underwater vehicles.
Quantum confinement effects in amorphous In–Ga–Zn–O thin-film transistors with quantum well channel
Authors: Abe Katsumi , Kamiya Toshio , Hosono Hideo
Published: November 2022

We confirmed that quantum confinement effects are clearly observed even in a disordered material. Employing amorphous In–Ga–Zn–O (a-IGZO) thin-film transistors (TFTs) with quantum well channels, it was observed that field-effect mobility–gate voltage relations exhibited plateaus when the well thickness was 5 nm or less. Device simulation incorporating the quantum confinement effects reproduced the well-thickness dependence of the plateau onset voltage, verifying that the quantized electronic levels in the a-IGZO well dominate the TFT characteristics and, thus, the electron transport is free electron like with a coherent length of ∼5 nm. The field-effect mobility did not exceed the drift mobility of bulk a-IGZO, which is different from amorphous silicon superlattice TFT.
Past and future coastal flooding in Pacific Small-Island Nations: insights from the Pacific Sea Level and Geodetic Monitoring (PSLGM) Project tide gauges
Authors: Ritman Mathilde , Hague Ben , Katea Tauala , Vaaia Tavau , Ngari Arona , Smith Grant , Jones David , Tolu Léna
Published: November 2022

Sea level rise is increasing the frequency of coastal flooding globally, and low-lying communities are particularly vulnerable. We present an assessment of historical and projected changes in coastal flooding in 11 Pacific small-island nations, using tide gauge data from the Australian Bureau of Meteorology. We derive impact-, event- and percentile-based thresholds to calculate historical exceedance frequencies. Projections of future exceedance frequencies are then made using the recent suite of Shared Socioeconomic Pathways (SSPs) emission scenarios (Sixth Assessment Report). We find that exceedances of the percentile thresholds have increased in the last decade at all locations, with sites seeing exceedances in months where exceedances were previously rare or unseen in the sea level record. In the future, daily threshold exceedances occur after 50–115 cm of sea level rise, depending on location. Such levels are currently projected to be reached between 2080 and 2130 according to high emissions scenario SSP5–8.5. Low emissions scenario, SSP1–1.9, shows sea level rise resulting in 25–75 days of exceedances by 2050 for the 11 locations. This increased frequency of coastal flooding highlights the changing nature of coastal flood risk in the Pacific, with extreme weather and wave events being increasingly unnecessary for inundation to occur. Further, this work highlights how underlying increases in coastal flooding frequency pose a growing risk of exacerbating inundation associated with extreme weather or waves. Better flood monitoring and reporting will improve the accuracy of impact thresholds, strengthening the relevance of the results presented here for coastal emergency and planning managers.
Opinion dynamics in financial markets via random networks
Authors: Granha Mateus F. B. , Vilela André L. M. , Wang Chao , Nelson Kenric P. , Stanley H. Eugene
Published: November 2022

We investigate financial market dynamics by introducing a heterogeneous agent-based opinion formation model. In this work, we organize individuals in a financial market according to their trading strategy, namely, whether they are noise traders or fundamentalists. The opinion of a local majority compels the market exchanging behavior of noise traders, whereas the global behavior of the market influences the decisions of fundamentalist agents. We introduce a noise parameter,
q
, to represent the level of anxiety and perceived uncertainty regarding market behavior, enabling the possibility of adrift financial action. We place individuals as nodes in an Erdös-Rényi random graph, where the links represent their social interactions. At any given time, individuals assume one of two possible opinion states ±1 regarding buying or selling an asset. The model exhibits fundamental qualitative and quantitative real-world market features such as the distribution of logarithmic returns with fat tails, clustered volatility, and the long-term correlation of returns. We use Student’s t distributions to fit the histograms of logarithmic returns, showing a gradual shift from a leptokurtic to a mesokurtic regime depending on the fraction of fundamentalist agents. Furthermore, we compare our results with those concerning the distribution of the logarithmic returns of several real-world financial indices.
Anisotropic metallic heterotrimer systems for an ultrahigh plasmonic-based improvement of hyper-Raman scattering signal
Authors: Alsawafta Mohammed
Published: November 2022

An anisotropic metallic trimer is proposed as an active plasmonic substrate for an ultrahigh enhancement in the spectroscopic signal of the hyper-Raman scattering (HRS) process. The suggested three-particle system is composed from non-aligned asymmetric nanoparticles of a cubic shape. The interacting resonators are made of gold material and illuminated by a longitudinally polarized light. The non-alignment condition in the heterotrimer is achieved by shifting the intermediate cube transversely away from the interparticle axis. Optical cross-section, nearfield distribution and charge density are calculated by using the finite-difference time-domain electrodynamic simulation tool. The enhancement factor of the HRS is calculated theoretically from the nearfield intensity associated with the resonance phenomenon of the considered trimer. The extinction profile of the illuminated system exhibits the excitation of two plasmonic modes. A superradiant mode observed in the longer wavelength region which resulted from the in-phase coupling between the plasmonic modes excited in each one of the three resonators. The second mode is a subradiant band emerged from the interference between bright and dark modes. The resonance wavelength of these two modes matches the excitation one and the second-order Stockes condition, respectively. After optimizing the value of both the transverse shift and the gap spacing, the enhancement factor of the HRS can reach as high as a value never reported before of 1 × 1018.
On planar flows of viscoelastic fluids of Giesekus type
Authors: Bulíček Miroslav , Los Tomáš , Lu Yong , Málek Josef
Published: November 2022

Viscoelastic rate-type fluid models of higher order are used to describe the behaviour of materials with complex microstructure: geomaterials like asphalt, biomaterials such as vitreous in the eye, synthetic rubbers such as styrene butadiene rubber. A standard model that belongs to the category of viscoelastic rate-type fluid models of the second order is the model due to Burgers, which can be viewed as a mixture of two Oldroyd-B models of the first order. This viewpoint allows one to develop the whole hierarchy of generalized models of the Burgers type. We study one such generalization that can be viewed as a combination (mixture) of two Giesekus viscoelastic models having in general two different relaxation mechanisms. We prove, in two spatial dimensions, long-time and large-data existence of weak solutions to the considered generalization of the Burgers model subject to no-slip boundary condition. We also provide, as a particular case, a complete proof of global-in-time existence of weak solutions to the Giesekus model in two spatial dimensions.