bluuebunny/crossref_metadata_2025 huggingface dataset:
Child Inhibitory Control in Toddlerhood: Associations with Child Interaction Quality with the Mother and Preliminary Neural Structural Correlates
Authors: Juntunen Pauliina , Korja Riikka , Tuulari Jetro J. , Eskola Eeva , Lahtela Hetti , Holmberg Eeva , Karonen Anniina , Otranen Marika , Pulli Elmo P. , Kataja Eeva-Leena , Bridgett David J , Karlsson Hasse , Karlsson Linnea , Nolvi Saara
Published: December 2022

Objective: Inhibitory control (IC) is one important predictor of academic achievement and social-emotional development. IC develops rapidly in early childhood and is considered moderately stable from preschool-age onwards. The role of IC for child’s interaction skills, and its neural correlates in toddlerhood have not been widely studied. We explored the associations between child IC at 24 and 30 months and child interaction quality (responsiveness and involvement) with the mother at 30 months and conducted a preliminary exploration of structural neural correlates of IC and child interaction quality in a subsample of children.Method: We measured IC using the Snack Delay task and child interaction quality with the mother using the Emotional Availability Scales (EAS) at 30 months in a sample of N = 350 toddlers from the FinnBrain Birth Cohort Study. In a subsample, IC was measured also at 24 months (N = 27) and structural MRI scans were acquired at 18–24 months (N = 9). Voxel-based morphometry analysis at the threshold of p < .05 and FDR-corrected at alpha < .05 was performed to detect grey matter clusters associated with IC.Results: Better IC was positively related to better child interaction quality with the mother cross-sectionally at 30 months (B = .13, p = .007) and longitudinally between 24 and 30 months (B = .14, p = .044). For IC at 24 months, the analysis revealed a cluster with less grey matter in the right calcarine sulcus (p < .001). For IC at 30 months, clusters with more grey matter in the left cerebellum (p = .007), right middle frontal gyrus (p = .018) and right superior occipital gyrus (p = .037) were identified. Implications: These findings suggest that higher IC in toddlerhood is associated with better child interaction quality with the mother. They also give preliminary support for associations between IC and more grey matter in areas involved in frontoparietal network and visual processing. Replication studies are warranted.
Repeated Risky Choices Become More Consistent with Themselves but not Expected Value, with No Effect of Trial Order
Authors: Spicer Jake , Mullett Timothy L , Sanborn Adam N
Published: December 2022

Choices made in risky scenarios are considered fundamentally noisy because decisions have often been found to be inconsistent when repeated. Past measures of noise may however be confounded by the use of randomised contextual factors that are known to influence choice, in particular trial order and trial-by-trial feedback. In two experiments, we control and eliminate these factors respectively to test the extent to which inconsistent choice is attributable to changes in experimental context. Both tasks find strong evidence that trial order has no effect on choice consistency, indicating such experimental factors have little influence on behaviour compared to internal noise. Choices also showed an increase in consistency across multiple repetitions, suggesting a fall in noise with experience, but this increase was not associated with any improvement in performance, with choices showing no greater adherence to either expected value or expected utility across repetitions. Instead, choices increasingly adhered to simplistic heuristic decision rules, possibly indicating greater reliance on such strategies as the tasks progressed. These results carry implications for a number of decision making theories, including true-and-error models, rank-based methods, and strategy shift approaches.
All Intelligence is Collective Intelligence
Authors: Falandays James Benjamin , Kaaronen Roope Oskari , Moser Cody James , Rorot Wiktor , Tan Joshua , Varma Vishwanath , Williams Tevin , Youngblood Mason
Published: December 2022

Collective intelligence, broadly conceived, refers to the adaptive behavior achieved by groups through the interactions of their members, often involving phenomena such as consensus building, cooperation, and competition. The standard view of collective intelligence is that it is a distinct phenomenon from supposed individual intelligence. In this position piece, we argue that a more parsimonious stance is to consider all intelligent adaptive behavior as being driven by similar abstract principles of collective dynamics. To illustrate this point, we highlight how similar principles are at work in the intelligent behavior of groups of non-human animals, multicellular organisms, brains, small groups of humans, cultures, and even evolution itself. If intelligent behavior in all of these systems is best understood as the emergent result of collective interactions, we ask what is left to be called “individual intelligence”? We believe that viewing all intelligence as collective intelligence offers greater explanatory power and generality, and may promote fruitful cross-disciplinary exchange in the study of intelligent adaptive behavior.
Transgender Dehumanization and Mental Health: Microaggressions, Sexual Objectification, and Shame
Authors: Cascalheira Cory J
Published: December 2022

Using structural equation modeling in a national, nonprobabilistic sample of 292 transgender women and men, this project extends the pantheoretical dehumanization framework by testing direct and indirect relations between dehumanization (i.e., a higher-order construct from experiences of transgender microaggressions and sexual objectification), internalization processes (i.e., internalized transnegativity, self-objectification), shame, and general mental health. The model explained 55% of the variance in general mental health. Direct relations between dehumanization and all internalization processes were positive and significant. Internalized transnegativity and shame were significant, negative, direct predictors of mental health, but neither dehumanization nor self-objectification was a significant direct predictor of transgender mental health. Both self-objectification and internalized transnegativity directly predicted more feelings of shame. However, only shame yielded a significant indirect pathway from dehumanization to mental health. The indirect relations from self-objectification and internalized transnegativity to mental health through shame were significant. Research, advocacy, and clinical implications are discussed.
A meta-analysis of the effects of non-invasive brain stimulation on creative thinking
Authors: Chen Qunlin , Ding Ke , Yang Yingkai , Yu Rongjun , Kenett Yoed , Qiujiang
Published: December 2022

Enhancing creative problem solving with neuromodulatory approaches is gaining increased interest. However, inconsistent findings of the success in such approaches emphasize the need for a comprehensive overview of the effect of using non-invasive brain stimulation (NIBS) on creative thinking. The current meta-analysis aimed to investigate whether creative thinking can be improved by NIBS, especially through transcranial direct current stimulation (tDCS). 34 studies with 97 effect sizes (N = 1574 participants, 84 in excitatory stimulation, and 13 in inhibitory stimulation) were included. Our analyses showed that excitatory NIBS had a small but positive effect on creative performance for both divergent and convergent thinking, but inhibitory NIBS showed non significant effects. For tDCS studies, there was an excitatory effect via anodal tDCS over the left dorsal prefrontal cortex, and an inhibitory effect via cathodal tDCS over the left inferior frontal gyrus on creative thinking. Our study suggests brain stimulation may hold the key to unleash creativity and also highlights issues to be addressed in future research.
Testing cognitive theories with multivariate pattern analysis of neuroimaging data
Authors: Peelen Marius , Downing Paul
Published: December 2022

Multivariate pattern analysis (MVPA) has emerged as a powerful method for the analysis of functional magnetic resonance imaging, electroencephalography and magnetoencephalography data. The new approaches to experimental design and hypothesis testing afforded by MVPA have made it possible to address theories that describe cognition at the functional level. Here we review a selection of studies that have used MVPA to test cognitive theories from a range of domains, including perception, attention, memory, navigation, emotion, social cognition and motor control. This broad view reveals properties of MVPA that make it suitable for understanding the ‘how’ of human cognition, such as the ability to test predictions expressed at the item or event level. It also reveals limitations and points to future directions.
Does emotion recognition change across phases of the ovulatory cycle?
Authors: Rafiee Yasaman , Stern Julia , Ostner Julia , Penke Lars , Schacht Anne
Published: December 2022

Recognizing emotions is an essential ability for successful interpersonal interaction. Prior research indicates some links between the endocrine system and emotion recognition ability, but only a few studies focused on within-subject differences across distinct ovulatory cycle phases and this ability. These studies have demonstrated mixed results that might be potentially due to heterogeneity in experimental tasks, methodologies, and lacking ecological validity. In the current study, we investigated associations between within-subject differences in ovarian hormones levels and emotion recognition from auditory, visual, and audiovisual modalities in N = 131 naturally cycling participants across the late follicular and mid-luteal phase of the ovulatory cycle. We applied a within-subject design with sessions in the late follicular and mid-luteal cycle phase, and also assessed salivary progesterone and estradiol in these sessions. Our findings did not reveal any significant difference in emotion recognition ability across two cycle phases. Thus, they emphasize the necessity of employing large-scale replication studies with well-established study designs along with proper statistical analyses. Moreover, our findings indicate that the potential link between ovulatory cycle phases (late follicular and mid-luteal) and emotion recognition ability might have been overestimated in previous studies, and may contribute to theoretical and practical implications of socio-cognitive neuroendocrinology.
Influence of surprise on reinforcement learning in younger and older adults
Authors: Koch Christoph , Zika Ondrej , Bruckner Rasmus , Schuck Nicolas W
Published: December 2022

Surprise is a key component of many learning experiences, and yet its precise computational role, and how it changes with age, remain debated.One major challenge is that surprise often occurs jointly with other variables, such as uncertainty, outcome magnitude and outcome probability. To assess how humans learn from surprising events, and whether aging affects this process, we studied choices while participants learned from stationary asymmetric outcome distributions, which decouple outcome magnitude, probability, uncertainty, and surprise.A total of 102 participants (51 older, aged 50 -- 73; 51 younger, 19 -- 30 years) chose between three bandits, one of which had a bimodal outcome distribution. Behavioral analyses showed that both age-groups learned the average of the bimodal bandit less well. A trial-by-trial analysis indicated that participants performed choice reversals immediately following large absolute prediction errors, consistent with heightened sensitivity to surprise.This effect was stronger in older adults.Computational models indicated that learning rates in younger as well as older adults were influenced by surprise, rather than uncertainty. Our work bridges between behavioral economics research that has focused on how outcomes with low probability affect choice in older adults, and reinforcement learning work that has investigated age differences in the effects of uncertainty and suggests that older adults overly adapt to surprising events, even when accounting for probability and uncertainty effects.
Psychometric Assessment and Gender Invariance of the Polish Adaptation of the Risky Loot Box Index
Authors: Cudo Andrzej , Lelonek-Kuleta Bernadeta , Bartczuk Rafał Piotr
Published: December 2022

Loot boxes are random virtual items in video games that gamers can purchase using real or virtual in-game money. Brooks and Clark (2019) developed a new five-item measure of risky behaviors surrounding the use of loot boxes the Risky Loot Box Index (RLI). So far, it is the only validated instrument to evaluate difficulties in controlling the use of these specific microtransactions in video games. This study aims to provide data on the Polish version of the RLI. A sample of 1,358 gamers (59.1% female) who opened loot boxes in the past 12 months completed an online survey conducted via an internet panel containing the RLI along with the Internet Gaming Disorder Scale–Short-Form, Problem Gambling Severity Index, and questions about loot box use and socio-demographics. As a result, the original RLI one-factor structure was successfully confirmed with the Polish version. The scale also displayed satisfying internal consistency. Furthermore, convergent validity indices were similar to those reported for the original version, and scale scores reached full invariance across gender. Finally, the study examined the item functioning of RLI according to item response theory. The Polish version of the RLI is well aligned with the original English version. Therefore, it offers a valuable measure to Polish researchers and clinicians interested in measuring the problematic aspects of loot box use.
T-RAC: Study Protocol for Assessing the Acceptability and Preliminary Efficacy of Adding an Exergame-Augmented Dynamic Imagery Intervention to the Behavioural Activation Treatment of Depression
Authors: Tiba Alexandru , Tocai Ioana Sîrbu , Drugas Marius , Bora Carmen , Miclăuș Daiana , Voss Laura
Published: December 2022

Background: Improving the existent effective treatments of depression is a promising way to optimise the effects of psychological treatments. Here we examine the effects of adding a rehabilitation type of imagery based on exergames and dynamic simulations to a short behavioural activation treatment of depression. We investigate the acceptability and the efficacy of an exergame-augmented dynamic imagery intervention added to behavioural activation treatment and associated mechanisms of change.Methods and analyses: In a two-arm pilot randomised controlled trial, the acceptability and preliminary efficacy of an exergame-augmented dynamic imagery intervention added to behavioural activation treatment for depressed individuals will be assessed. Participants (age 18–65) meeting criteria for depression will be recruited by media and local announcements. 110 participants will be randomly allocated to behavioural activation plus imagery group or to standard behavioural activation group. The primary outcome is depressive symptom severity (Beck Depression Inventory II) and secondary outcomes are anhedonia, apathy and behavioural activation and avoidance. The outcomes are assessed at baseline, mid treatment, posttreatment and 3-month follow-up. Moderation and mediation analyses will be explored. An intention-to-treat approach with additional per-protocol analysis will be used for data analysis.Ethics and dissemination: This trial is approved by the ethics committee of the Faculty of Socio-Humanistic Sciences of University of Oradea (no.: 2394/18.11.2022). Informed consent is required from participants before enrollment in the study. The results will be submitted for publication in peer-reviewed journals and presented at conferences.Trial registration number: This trial was registered in the Clinical Trials Register: NCT05625230.
Taxonomic and thematic relations rely on different types of semantic features: Evidence from an fMRI meta-analysis and a semantic priming study
Authors: Zhang Yueyang , Mirman Daniel , Hoffman Paul
Published: December 2022

Taxonomic and thematic relations are major components of semantic representation but their neurocognitive underpinnings are still debated. We hypothesised that taxonomic relations preferentially activate parts of anterior temporal lobe (ATL) because they rely more on colour and shape features, while thematic relations preferentially activate temporoparietal cortex (TPC) because they rely more on action and location knowledge. We first conducted activation likelihood estimation (ALE) meta-analysis to assess evidence for neural specialisation in the existing fMRI literature (Study 1), then used a primed semantic judgement task to examine if the two relations are primed by different feature types (Study 2). We find that taxonomic relations show minimal feature-based specialisation but preferentially activate the lingual gyrus. Thematic relations are more dependent on action and location features and preferentially engage TPC. The meta-analysis also showed that lateral ATL is preferentially engaged by Thematic relations, which may reflect their greater reliance on verbal associations.
Disabled and Romani passengers face similar levels discrimination but different levels of open hostility in the sharing economy
Authors: Simonovits Bori , Kurdi Benedek , Simonovits Gábor
Published: December 2022

This multimethod project investigates discrimination against members of two populous minority groups in the European Union: the Roma (numbering 6 million) and the disabled (numbering 100 million) on a leading Hungarian carpooling platform. In a field experiment, 1,005 ride requests were sent to drivers, with passenger group membership (control, disabled, Roma) manipulated between participants. Widespread discrimination against both groups was apparent in significantly lower approval rates for disabled (56%) and Roma passengers (52%) relative to control (70%). Mechanisms driving anti-disabled and anti-Roma discrimination were probed using an experimental manipulation, natural language processing analysis of driver–passenger interactions, and an online survey (N = 398). Individuating information in the form of reviews did not mitigate unequal treatment, thus providing evidence against statistical (stereotype-based) discrimination. Militating against taste-based (attitudinal) discrimination, respondents reported negative attitudes toward Roma passengers but positive attitudes toward disabled passengers. Moreover, despite equivalent approval rates, disabled passengers were more likely to receive a response from drivers and received more polite responses than Roma passengers did. Overall, the observed patterns are most readily explained by intergroup emotions: Contempt toward Roma passengers likely engenders both passive and active harm, whereas pity toward disabled passengers likely engenders passive harm and active facilitation.
Learning where to be flexible: Using environmental cues to regulate cognitive control
Authors: Xu Shengjie , Simoens Jonas , Verguts Tom , Braem Senne
Published: December 2022

Cognitive flexibility refers to a mental state that allows efficient switching between tasks. While deciding to be flexible is often ascribed to a strategic resource-intensive executive process, people may also simply use their environment to trigger different states of mental flexibility. We developed a paradigm where participants were exposed to two environments with different task switching probabilities, followed by a probe phase to test the impact of environmental cues. Our results show that people were more efficient at switching in a high-switch environment. Critically, we observe environment-specific triggering of cognitive flexibility after a four-day training period (Experiment 2, N = 51), but not after a one-day training period (Experiment 1, N = 52). Together, these findings suggest that people can associate the need for cognitive flexibility to their environment, providing an environmental triggering mechanism for cognitive control.
Computational models of perceptual expertise reveal a domain-specific inversion effect for objects of expertise
Authors: Yovel Galit , Grosbard Idan , Abudarham Naphtali
Published: December 2022

The question of whether perceptual expertise is mediated by general-expert or domain-specific processing mechanisms has been debated for decades. Because humans are face experts, face-like effects in objects of expertise were considered support for the general-expertise hypothesis. Conversely, stronger effects for faces, were considered support for the domain-specific hypothesis. However, effects of domain, experience, and level of categorization, are confounded in human studies, which may lead to erroneous inferences. To overcome these limitations, we used computational models of perceptual expertise and tested different domains and levels of categorization in isolation, matched for amount of experience. Like humans, the models generated a larger inversion effect for faces than for objects. Importantly, a face-like inversion effect was found for individual-based categorization of non-faces but only in a network specialized for that domain. Thus, contrary to prevalent assumptions, face-like effects in objects of expertise may originate from domain-specific rather than general-expert processing mechanisms.
Ten Meta Science Insights to Deal With the Credibility Crisis in the Social Sciences
Authors: Bekkers Rene
Published: December 2022

A decade of meta science research on social science research has produced devastating results. While the movement towards open science is gaining momentum, awareness of the credibility crisis remains low among social scientists. Here are ten meta science insights on the credibility crisis plus solutions on how to fight it.
Achieving the Sustainable Development Goals through good enough governance: lessons from Argentine and Brazilian Municipalities
Authors: Litre Gabriela , Bursztyn Marcel , Simoni Jane , Reis Rafael Morais
Published: December 2022

This article analyses how two environmental “good enough-governance” approaches in climate change vulnerable areas in Argentine (Pampa biome) and Brazilian (Amazon biome) municipalities have the potential of contributing to the achievement of the Sustainable Development Goals 12 (responsible consumption and production), 13 (climate action), 15 (life on land), 16 (Peace, Justice and Strong Institutions), and 17 (partnerships for the goals). Local public officials from Brazil often by-pass frustrating bureaucracy by transferring their own public responsibilities to NGOs (subsidiarity principle). Argentine public servants, on the other hand, are frequently filling the gaps left by the fragile vertical integration of environmental actions through bottom-up, horizontal initiatives among municipalities. Both approaches show strengths but also fragilities, such as the lack of policy continuity. In spite of the socio-environmental differences, many Brazilian and Argentine local agents are developing a common array of individual and social “soft skills” which are usually attributed to NGOs: goal-oriented, innovative thinking, teamwork, integration and flexibility, all necessary to the localization of the Agenda 2030. Environmental institutions and norms at the local level could be rearranged to worship these soft skills in the public sector by putting people at the centre of adaptive decision-making through capacity development, career incentives and accountability.
Pelatihan Kompetensi Mengetik Cepat dengan Penerapan Typing Master di SMK Negeri 9 Bandar Lampung
Authors: Suripto Suripto , Maryani Eri , Sari Putri Irmala , Supriyanto Supriyanto
Published: December 2022

Fast 10 Finger Typing is a blind typing method which means we only value what we are going to type and use our instincts without looking at the keyboard. This technique is used to optimize the function of the fingers and the eyes do not get tired easily because they focus on the typed writing. This technique has an arrangement of placing the fingers so that all fingers can function in typing. This 10 finger typing exercise will apply a fast typing method, namely by using the typing master method.This service activity aims to help users to be able to type quickly. The typing master method, also known as training, is a good way of teaching to instill certain habits. Also as a means to maintain good habits. In addition, this method is also good for obtaining dexterity, accuracy, opportunity and skills. The typing master method in the current era is very helpful in the typing skills needed by a secretary or administrative employee, in the business or office world, such as hospitality, travel, limited liability companies. , Firms and government agencies such as education.Fast typing competition training with the application of typing master for students of SMKN 9 Bandar Lampung, to be able to further improve their mastery and skills in fast typing.
PENGEMBANGAN POTENSI KULINER PADUKUHAN GERJEN DALAM UPAYA MENDUKUNG DESA MARGOMULYO SEBAGAI DESA WIRAUSAHA HEBAT
Authors: Munarsih Eni , Sugiri Sugiri , Elrifi M Yudhika , Hariningsih Endang
Published: December 2022

Pelaksanaan pengabdian masyarakat ini bertujuan untuk membantu masyarakat (Mitra) yang memiliki usaha dan berpotensi untuk berkembang namun memiliki berbagai kendala. Kendala tersebut antara lain harga bahan baku yang fluktuatif, kapasitas produksi yang masih terbatas, kerapian dan pengemasan produk, belum adanya ijin PIRT, belum dilakukannya kegiatan pembukuan usaha, serta pemasaran yang masihÂ terbatas.Dengan adanya pelaksanaan pengabdian masyarakatÂ ini,Â kendala-kendala tersebut bisa diatasi. Bahan baku yang fluktuatif serta kapasitas produksi yang terbatas diatasi dengan pengadaan alat pengaduk jenang yang dapat memacu peningkatan volume produksi sehingga biaya produksi dapat ditekan. Usaha peningkatan kualitas dan penentuan desain kemasan yang mampu menambah value dari produk dilakukan dengan mengadakan pelatihan, sehingga produknya layak untuk dijualkan melalui toko oleh-oleh yang ada di Yogyakarta. Sedangkan untuk kerapian produk diatasi dengan pengadaan alat mesin pencetak dan pemotong jenang. Hal ini ditujukan agar produk yang dihasilkan rapi dan memiliki berat bersih yang sama. Mengenai kendala pembukuan dan perijinan PIRT dilakukan pendampingan agar Mitra mampu memiliki ijin usaha dan bisnisnya terbukukan dengan baik. Untuk meningkatkan volume penjualan dilakukan system pemasaran yang memanfaatkan social media, agar jangkauan pasarnya lebih luas.Â
Neuro-Behçet: diagnóstico diferencial de enfermedades desmielinizantes
Authors: Vásquez Céspedes Johana Marcela , Solera Vega Andrés , Madrigal Calderón José Pablo , Rivera Sandoval Natalia
Published: December 2022

La enfermedad de Behçet (EB) es una vasculitis inflamatoria multisistémica de etiología incierta e infrecuente, clasificada como una enfermedad rara en Estados Unidos y países europeos. El síndrome de Neuro-Behçet (SNB) ocurre cuando se presenta compromiso neurológico en pacientes con EB, en los cuales se ha descartado otras etiologías neurológicas. El espectro de afectación neurológica en la EB es muy amplio, sin embargo, las manifestaciones clínicas y los hallazgos de neuroimagen guían hacia dos grandes grupos de SNB: parenquimatoso y no parenquimatoso. La EB se debe incluir en el diagnóstico diferencial de enfermedades inflamatorias, vasculares y desmielinizantes del SNC.
Doença renal crônica em pequenos animais e biomarcadores que visem sua precocidade
Authors: Rossi Isabella Mariana , Leite Júlia Moreira , Santos Liliane Orlando , Simões Anna Levy , Cisi Vivian Lindmayer
Published: December 2022

A doença renal crônica (DRC) refere-se à forma mais conhecida da doença renal em pequenos animais, considerada uma causa comum de morbidade e mortalidade. Atualmente são utilizados na rotina clínica veterinária como método diagnóstico a urinálise e a creatinina sérica, entretanto, ambas são consideradas tardias, tendo em vista que irão apresentar consideráveis resultados a partir de 75% de comprometimento renal. Em contrapartida, novos biomarcadores vêm sendo estudados para o diagnóstico precoce da doença renal, como é o caso da dimetilarginina simétrica (SDMA), Cistatina C, Gama glutamiltransferase (GGT) e N-acetil-β-glucosaminidase (NAG). O objetivo do atual estudo foi realizar comparações entre os demais novos biomarcadores e antigos métodos diagnósticos visando o diagnóstico precoce da DRC. Concluiu-se que que atualmente o SDMA refere-se como um bom método de diagnóstico precoce para a DRC, entretanto, a cistatina C, NAG e GGT demonstraram resultado desfavorável em vista da escassez de estudos e padronização de valores.
Sensörsüz Seri Elastik Tekniği ile Bir Kablo Sürümlü Düzlemsel Mekanizmanın Kontrolü
Authors: KUNDUZ İrfan , DURMAZ Atakan , ALBAYRAK Özlem , ALP Tilbe , ÜNAL Perin , ANKARALI Mert
Published: December 2022

Bu çalışmada, sensörsüz elastik seri tekniği ile kablo sürümlü bir düzlemsel mekanizmanın kontrolü incelenmektedir. Kablo sürümlü robotlar, gösteri alanlarında örümcek kamera olarak yatay düzlemde çalışan şekilde hali hazırda kullanılmaktadırlar. Bu çalışmada ise düşey düzlemde çalışan bir kablo sürümlü robot üzerinde çalışılmaktadır. Mekanizmanın düşey düzlemde çalışması sebebiyle de örümcek kameralardaki gibi her motora eşit kuvvet uygulanmamaktadır. Kablo sürümlü robotların kontrolü için kullanılan, sensörlerden alınan bilgilerin işlenmesine dayalı yöntemleri kullanmak yerine, sensörlerden elde edilen bilgilerde oluşabilecek herhangi bir gecikmeden veya hatadan etkilenmemek için bu çalışmada sensörsüz bir kontrol tekniği kullanılmaktadır. Sırasıyla, mekanizmanın mekanik, donanım ve yazılım kısımlarının açıklanmasının ardından, kontrol stratejimizin matematiksel olarak derinlemesine çalışılacağı modelleme ve varsayımlar sunulmaktadır. Çalışmanın sonuç bölümünde simülasyon ve gerçek çıktılar karşılaştırılmaktadır.
Türkiye’de Çevresel Etki Değerlendirmesi Uygulamalarında İnşaat Sektörü Analizi
Authors: CEYLAN Hakan , YAVUZ Burçak
Published: December 2022

Çevresel Etki Değerlendirmesi (ÇED), faaliyetlerin çevresel etkileri için geliştirilmiş bir çevre yönetim aracıdır. İnşaat faaliyetleri de değişik boyutlarda çevresel etkileri olabilen bir alandır. Bu çalışmada ülkemizdeki 2015-2020 yılı arasındaki ÇED başvuruları, hem genel hem de inşaat sektörü açısından analiz edilmiştir. ÇED başvuruları arasında inşaat sektörünün maden, enerji, tarım-gıdadan sonra, %11 ile 4. sırada yer aldığı belirlenmiştir. İnşaat sektörüne ait başvuruların %79’u ÇED olumlu kararı alırken %21’lik kısmı iade ile sonuçlanmıştır. Söz konusu dönemde inşaat sektörüne ait faaliyetler sınıflandırıldığında en çok başvurunun %32 ile baraj, gölet vb. alanlarda, en az başvurunun ise demiryolu inşaatlarında olduğu belirlenmiştir.
Ulaştırmanın Kentleşme Üzerine Etkisinin Kent İçi Ulaştırmada Türel Dağılıma Göre Analiz Edilmesi
Authors: AKKAYA Durmuş , KIZILTAŞ Mehmet Çağrı
Published: December 2022

Kentleşme çağımızın en önemli olgularından bir tanesidir. Hareketlilik, sürdürülebilirlik ve dijitalleşme ile birlikte bulunduğumuz yüzyılın ulaştırma eğilimlerini şekillendirecektir. İnsanlar artık hem dünyada hem de Türkiye’de büyük kentlerde kalabalık nüfuslar halinde yaşamakta ve bu durum dünyanın pek çok ülkesinde yaygınlık kazanmıştır. Bu çalışma kapsamında ilk olarak kent ile ilgili bilgi verilmiş olup ardından ise kentsel kararlarda ulaştırmanın etkisi irdelenmiş sonrasında ise ulaştırma ve türel dağılımda insan merkezli bakış açısı çözümlenmiştir. Karayolu, raylı sistemler ve deniz ulaşımı İstanbul özelinde detaylı bir şekilde değerlendirilmiş olup bu bağlamda son olarak da sonuç ve öneriler ortaya konulmuştur.
Laktasyonun İlk Üç Ayında Annelerin Süt Vermelerinin, Beslenme ve Fiziksel Aktivitelerinin Beden Kütle İndeksi Üzerine Etkileri
Authors: KAHRAMAN Merve , KÖSEOĞLU Sabiha Zeynep Aydenk
Published: December 2022

Laktasyon gebelik boyunca üretilen hormonlarla birlikte meme bezlerinin gelişip olgunlaştığı ve sütün salgılandığı emziklilik dönemidir. Emzirme bebek ve anne açısından çok faydalar getiren önemli bir süreçtir. Anne emzirmeye devam ettikçe beraberinde beslenmesine dikkat edip, egzersiz de yaptığı sürece ağırlık kaybıyla birlikte beden kütle indeksinde (BKİ) azalma görülür. Bu çalışmada annelerin emzirme, beslenme ve fiziksel aktivite durumlarının incelenmesi amaçlandı. Çalışmaya laktasyon döneminin üçüncü ayında olan 26 kadın alındı ve çalışma pandemiden dolayı online olarak analiz edildi. Emzirme süresi ile BKİ değerleri arasındaki korelasyon incelendiğinde istatistiksel olarak anlamlı sonuç bulunmadı (p>0.05). Ancak emzirme sıklığının BKİ’ye etkisinin yönü incelendiğinde; istatistiksel olarak anlamlı sonuç bulundu (p0.05) aynı dönemde ara öğünde kuru meyve tüketim sıklığı ile doğumdan üç ay sonraki BKİ arasında negatif yönlü orta şiddette korelasyon gözlemlendi. Doğumdan üç ay sonraki BKİ değeri ile egzersiz sıklığı analiz edildiğinde p değerinde sınırda anlamlılık (0.05
Kültür Varlıklarının Sanal Ortamda Yeniden İşlevlendirilmesi: Yerebatan Sarnıcı Örneği
Authors: ERBAŞ Ersan , TUNCEL Didem
Published: December 2022

Sanal gerçeklik, halihazırda yaşantımızda bulunan fiziksel olgu veya durumların bilgisayar üzerinde üretilmiş olan ses, yazı 3D görüntüler veya grafik verileriyle bir araya gelmesi şeklinde tanımlanabilir. Bu çalışmanın amacı, önemli kültürel değerlerimizden biri olan Yerebatan Sarnıcı’nın sanal gerçeklik temelinde sanal ortamda yeniden işlevlendirilerek sergi haline getirilmesiyle birlikte interaktif olarak ziyaret edilmesidir. Bu çalışmada Yerebatan Sarnıcı’nın tarihçesi ve mimari yapısı, veri işleme ve dijital tasarım süreçlerinden bahsedilmiştir. Veri işleme ve dijital tasarım süreçlerinde ilk olarak yersel taramadan elde edilen nokta bulutu verisi referans alınarak yapı 3D katı model haline getirilmiştir. Daha sonra elimizde bulunan mevcut katı model üzerine sonuç üründe kullanıcı ziyaretlerinde gösterilmek üzere projenin ve mekânın ruhuna uygun bir tasarım yapılarak mevcut yapı sanal sergi haline getirilmiştir. Yine bu süreçlerden biri olan optimizasyon aşaması, VR, Web, telefon uygulamaları vb. dijital ortamlarda 3D bir projeyi tam performans sunabilmek için gerekli teknik aşamaların en önemli kısımlarından biridir. Son aşama olan uygulama (oyun motoru) aşaması ise, 3D model ve tasarımı yapılmış projeninin tüm görsel ayarları ve akıllandırma işlemlerinin yapılarak sonuç ürün haline getirildiği kısımdır. Çalışmanın sonucunda, Yerebatan Sarnıcı’nın sanal sergi olarak yeniden işlevlendirilmesi sarnıcın geniş kitlelere yayılması ve orijinal ruhunun yaşatılması açısından büyük önem taşımaktadır. Sanal gerçeklik baz alınarak geliştirilmiş olan kültürel miras yapılarımız, bilimsel araştırmalar ve çalışmalardan elde edilen bilgiler doğrultusunda turizm sektörünün yanı sıra kültür ve eğlence alanında da önemli faydalar sağlayacaktır.
Forced Frequency Response Analysis of a Gudgeon Pin
Authors: GÜLSEVİNÇLER Ekrem
Published: December 2022

In this study, forced frequency response analysis was applied on the gudgeon pin. Ansys Mechanical 19.2 program was used to analyze the vibration on the gudgeon pin. Once completed in the finite element analysis, a note from the modal results, the model's natural frequencies range from 38721 to 79346 Hertz for the first 12 modes. According to the modal analysis results, the gudgeon pin will not be subjected to resonance during working. Therefore, a frequency scan including modal analysis is required to detect resonant frequencies that may coincide with the natural frequencies of the first 12 modes obtained in modal analysis. Consequently, harmonic analysis has been solved using the mode superposition method with 50 intervals with 1000 Hz steps in the range of 30000-80000 Hz. To dampen the resonant frequencies, harmonic analyzes were repeated using six different constant damping ratios, and the results were compared.
Türkiye'ye yönelik dış turizm talebi açısından ülkelerin kümeleme analizi ile sınıflandırılması
Authors: AYDOĞDU ULUKAN Ece , PEKER Serhat
Published: December 2022

Turizm ülkelerin ekonomik gelişimi için en önemli unsurlardan biridir. Ülkelere gelen yabancı turistlerin verilerinin analiz edilmesi bu gelişime katkı sağlaması açısından büyük önem taşısa da uluslararası turizme yönelik Türkiye’de yeteri kadar çalışma bulunmamaktadır. Bu çalışmanın amacı, farklı ülkelerden Türkiye’ye olan dış turizm talebini kümeleme analizi kullanarak incelemek ve Türkiye’ye turist gönderen bu ülkeleri sınıflandırmaktır. Bu bağlamda, ülkelerin gelir düzeyleri, ülkelerden çıkan turist sayıları, çıkan turist sayılarında Türkiye’nin payı ve turistlerin Türkiye’de konaklama süresi gibi faktörler dikkate alınmış ve iki aşamalı kümeleme yöntemi kullanılarak ülkeler gruplandırılmıştır. Elde edilen ülke grupları, kullanılan değişkenler ışığında karakterize edilmiştir. Bu çalışma sonucunda oluşturulan ülke profillerinin, politika yapıcılarının etkin stratejiler geliştirmesinde yardımcı olacağına inanılmaktadır.
Optimal PID Controller Design Based on Proportional Gain for Quarter Vehicle Model
Authors: TURAN Abdullah , AGGÜMÜŞ Hüseyin
Published: December 2022

In this study, an effective and new design method was used to determine the parameters of the PID controller used in order to improve the performance of a vehicle's active suspension system and to suppress vibrations in the vehicle. In this method, the PID controller is designed based on the optimal proportional gain kp setting, taking into account the settling time and maximum overshoot of the quarter vehicle system. This method is based on obtaining the other parameters of the controller by adjusting the kp to minimize the settling time and maximum overshoot error in a stable cycle. The obtained simulation results were evaluated by comparing the uncontrolled suspension system and the suspension system in which the PID controller whose parameters were adjusted with the proposed effective design method. It suppressed the system responses of the PID controller more effectively than the passive suspension system.
Structural Analysis of the Nose Landing Gear of a Fighter Aircraft
Authors: AYDIN Gözde , OZKOL İbrahim
Published: December 2022

The landing gear, which is one of the most important mechanical systems in aircraft, is the structure that is exposed to landing loads, one of the most important and critical loads that the aircraft is exposed to throughout its life cycle. In addition to the fact that the landing gear system must have high strength to these loads, long life, high performance, low volume, minimum weight, and low cost are important criteria. For this purpose, the optimum design is created by making a structural analysis using the landing gear finite element method. The main purpose of this study is to analyze the strength criteria by performing the structural analysis of the nose landing gear of a fighter aircraft. For the design, the most critical static and dynamic loads in the landing condition were calculated and applied as vertical, side, and drag forces. The displacement and stress values obtained as the final result by using metallic materials such as Aluminum 7075 T6 alloy, Titanium Ti-6Al-4V alloy, PH13-8Mo, 300M Steel, SAE 1035, and AISI 4340 steel alloy in the nose landing gear fork, torque links, side stay arms, and main strut were compared. The safety of the parts was examined from the results of the analysis. CAD drawings were made using Siemens NX and ANSYS SpaceClaim program. Structural analysis was applied with the ANSYS Workbench program, which uses the finite element method.
Cornus Alba Reinforced Polyester-Epoxy Hybrid Composite Production and Characterization
Authors: BURAN Abayhan , DURĞUN Murat Ersin , AYDOĞMUŞ Ercan
Published: December 2022

In this study, ornamental cranberry (Cornus Alba) reinforced hybrid composite is synthesized. The plant leaves have been collected, dried, and ground for composite production. After it is reinforced into unsaturated polyester (UP) at different rates by mass, it is mixed to show a homogeneous distribution. Then, 5 wt.% of the total mixture is added to the epoxy resin and polymerization reactions are started with the help of necessary additives and catalysts. The product obtained is poured into standard molds and after waiting one day for curing, necessary tests are carried out. According to the results obtained, biomass supplementation reduces the density of the hybrid composite. Although the addition of epoxy resin increases the hardness of the composite, the ornamental cranberry supplement reduces Shore D hardness. It is observed that the thermal conductivity coefficient decreases as the ratio of polyester resin in the composite increases. However, both epoxy resin and biomass reinforcement slightly raises the thermal conductivity coefficient. Also, high biomass reinforcement both weakens the mechanical strength of the hybrid composite and negatively affects the surface morphology. In this study, it was determined that the composite obtained by using 88.5 wt.% UP, 3 wt.% Epoxy A, 1.5 wt.% Epoxy B, 5 wt.% biomass, 1.5 wt.% methyl ethyl ketone peroxide (MEKP), and 0.5 wt.% cobalt octoate (Co Oc) showed optimum properties.
Pandeminin Elektrik Enerji Sistemlerinin İşletilmesi Üzerindeki Etkilerinin İncelenmesi
Authors: AJDER Ali
Published: December 2022

Dünya Sağlık Örgütü koronavirüsü (COVID-19) 11 Mart 2020’de küresel salgın ilan etmiştir. Bu tarihten sonra farklı ülkelerde karar vericiler almış oldukları kısmi kapanma, tam kapanma ve kademeli normalleşme tedbirleri ile epidemi pikini zayıflatmaya çalışmışlardır. Kapanma tedbirlerinden kaynaklı küresel elektrik talebi 2020 yılında ortalama %4 azalmıştır. Ayrıca pandeminin özellikle ilk döneminde dünyanın birçok bölgesinde elektrik tüketim profilleri değişmiştir. Hem enerji tüketimindeki azalma hem de tüketim profillerinin değişikliği, elektrik şebekesi operasyonunun güvenilirliğini ve uyarlanabilirliğini inceleme fırsatı sağlamıştır. Bu çalışmada, COVID-19 küresel salgınının elektrik enerjisi talebine, elektrik enerji üretimine, iletim/ dağıtım sistemine, elektrik piyasalarına etkisine ait dünyadan çeşitli örnekler verilerek, pandemi sürecinin Türkiye elektrik enerji sistemlerine etkisi incelenmiştir.
Tesis Yeri ve Kapasite Seviyesi Seçimi Problemi ve Pandemi Döneminde Bir Tedarik Zinciri Tasarımı Vakasına Uygulaması
Authors: KOCAOĞLU Batuhan , YAVUZ Emre
Published: December 2022

Bu çalışmada kademeli kapasitelere sahip tesisler için tesis yeri ve kapasite seviyesi seçimi problemi ele alınmıştır. Doğru kapasitede doğru lokasyonda tesis seçimi ile tesislerin sabit işletme giderleri ile bu tesislerde üretilen mal ve hizmetlerin dağıtım merkezlerine taşıma maliyetlerinden oluşan toplam maliyetin en aza indirilmesi amaçlanmıştır. Bu problemin çözümü için tam sayılı doğrusal programlama modeli önerilmiştir. Bu çalışmada fark yaratan durum, bir tek aşamalı tedarik zincirinde potansiyel lokasyonlardaki tesisler arasından seçim kararının yanı sıra, kademeli kapasitelerin tesisler arasında transferi ve ya sisteme dahil olacak yeni kapasitelerin dağıtımı problemini ele almak için yeni bir tam sayılı doğrusal programlama modeli önerilmesidir. Böylece atıl kapasiteler daha iyi değerlendirilebilecek ve taşıma maliyetleri düşürülebilecektir. Gerek iş hayatında gerekse insanların bireysel yaşamında derin izler bırakan COVID-19 sürecinin tedarik zincirleri üzerindeki etkisi tüm ezberleri bozmuştur. Pandemi döneminde Pazar ihtiyaçlarının neredeyse tamamen değişmesi ile birlikte, çoğu tedarik zinciri ağı mevcut yapısıyla ihtiyacı karşılamakta zorluk çekmektedir. İşte tam bu noktada tedarik zincirini yeniden tasarlamak isteyen bir dezenfektan üreticisi ile ilgili vaka ele alınmış ve tanıtılan model bu vakaya uygulanmıştır. İncelenen vakanın ve uyarlanan modelin, benzer durumdaki vakaların çözümüne katkı sağlaması hedeflenmiştir.
Tendências e estratégias para a agroindústria do futuro
Authors: BALIEIRO ACENINI LIMA , CÂMARA ANA PAULA COSTA , LIMA ANNY KELLY VASCONCELOS DE OLIVEIRA , SILVA ERICK VIANA DA , SOUZA IRIS BARBOSA DE , FERREIRA JOÃO PEDRO , ALBUQUERQUE KRAUSE GONÇALVES SILVEIRA
Published: December 2022

O Congresso Internacional da Agroindústria - CIAGRO é um evento internacional, concebido no âmbito das atividades desenvolvidas no Programa Internacional Despertando Vocações para as Ciências Agrárias (PDVAgro) e realizado pelo Instituto Internacional Despertando Vocações (IIDV) que tem compromisso com a democratização do conhecimento e com uma educação de qualidade. Este evento foi idealizado e conduzido de forma online através de plataforma digital, e foi desenvolvido para um público-alvo de estudantes de cursos técnicos, de graduação e pós graduação, professores e pesquisadores, empresas, profissionais e comunidade, em geral, da área e interessados no tema. O CIAGRO 2022 trouxe como tema principal “Tendências e Estratégias para a Agroindústria do Futuro”, e através deste tema norteador teve-se a oportunidade de acompanhar vários caminhos da cadeia produtiva do alimento no cenário nacional e internacional, para hoje e também inovações para o futuro, com divulgação de conteúdos e resultados de pesquisas; estabelecendo trocas de experiências entre indivíduos do Brasil, de diferentes instituições, e do exterior; estimulando a geração de novas redes de cooperação multicêntricas entre a indústria e a área acadêmica, contribuindo com o enriquecimento na formação de estudantes e profissionais, que atuam nos diferentes setores da agroindústria em diferentes países. O e-book do CIAGRO 2022, está dividido em capítulos, que enfatiza os diversos elos da agroindústria, evidenciando as Inovações e tecnologias emergentes, Análises de alimentos, Gestão da Agroindústria, Biotecnologia na produção de alimentos, Produção sustentável e Segurança Alimentar e Formulação e Processamento de Alimentos. São, portanto, trabalhos que trazem informações e metodologias do mais expressivo conteúdo sobre temáticas de grande importância na agroindústria mundial.