bluuebunny/crossref_metadata_2025 huggingface dataset:
Management Information Systems: Bibliometric Analysis and Its Effect on Decision Making
Authors: Santoso Budi , Hikmawan Try , Imaniyati Nani
Published: March 2023

Decision-making in the organization always relates to the description of the results of the decisions taken. Therefore, every organization needs a management information system to assist in making various kinds of decisions needed. The purpose of this study was to determine the influence and effectiveness of management information systems on decision-making in the field of archives. The method used in this study is the explanatory survey method. Data collection techniques were carried out using questionnaires and product correlation moments. Data analysis was performed using simple regression analysis and hypothesis testing. The subjects of this study were 120 administrative employees in the city of Bandung. To support the analysis, this study also carried out a bibliometric analysis to determine trends in research development from information management systems to decision-making. Based on the findings, the quality of the management information system used is in the high category, as well as the effectiveness of decision-making is in the high category. Based on the results of hypothesis testing and significance, it can be interpreted that the management information system has a positive and significant effect on decision-making in the field of administration.
e-book Multimedia Animation Implementation on Concept Mastery and Problem-Solving Skills of Crystal Structure Subjects in Engineering Materials Course
Authors: Suherman Amay , Komaro Mumu , Ana A.
Published: March 2023

This research is motivated by students’ difficulties in understanding abstract, complex, and dynamic concepts in the learning process of the Engineering Materials course. The course is very important because it is indispensable for advanced study program expertise courses. The purpose of the research is to analyze the impact of using the e-book Multimedia Animation (e-MMA) in the learning process of engineering materials courses on improving students’ learning outcomes in the crystal structure subject. The research used an experimental method with a randomized control group pretest-posttest design. Two groups were assessed from two classes in Engineering Department randomly selected as the research sample. The subject that becomes the focus of this study is Crystal Structure to understand Concept Mastery and Problem-solving aspects. Thus, there will be two competency data from the research results. The application of e-MMA in the learning process of engineering materials can improve student learning outcomes with an increase in the high category N-gain. The E-MMA is very effective in solving the problems of students in understanding crystal structure subject in engineering materials courses because of their ability to provide images and animations of abstract objects. Students can easily understand the concepts and formulas that exist in the crystal structure subject of engineering materials course
Gender Representation in English Textbook: A Visual Grammar Analyis
Authors: Muzdalifah Astria , Noorman Safrina , Gunawan Wawan
Published: March 2023

This study was qualitative descriptive, which investigated what kind of gender features emerged for the male and female represented in image of textbook for elementary school. The data of this study were collected from an English textbook entitled “Stairway a fun and easy English textbook (for Grade IV of Elementary Schools”, published by Tiga Serangkai. The data in the present study were in the form of images and texts taken from a textbook. The data were analysed by following the theory of visual grammar by (Kress van Leeuwen, 2006) to analyse the visual text. The study found that there are unequitable gender representations typically because both genders are represented through stereotypical portrayals. Males are represented to dominate language strategies and occupy more public areas, while females are represented to be passive and occupy more private areas. The portrayal of asymmetrical gender representation in the textbook shows that the reflection of the textbook is realized by ideology and inspired by the interest of the society.
Implementasi Model Pembelajaran Kontekstual dalam Meningkatkan Prestasi Belajar Aircraft-Electrical Peserta-Didik
Authors: Pakpahan Saul Samosir
Published: March 2023

AbstractPenerapan model pembelajaran kontekstual dilatarbelakangi oleh observasi aktivitas keterampilan dasar dalam pembelajaran Aircraft Electrical. Penggunaan alat ukur listrik dan elektronika pada peserta-didik kelas XI-EA SMKN 12 Bandung Tahun Pelajaran 2019/2020 menghadapi beberapa kendala. Hal ini berdampak pada hasil belajar peserta-didik dimana hanya 48,6% peserta-didik yang mencapai Kriteria Ketuntasan Minimum (KKM). Penelitian ini bertujuan untuk membuat profil kegiatan pembelajaran yang akan digunakan dalam penyusunan rencana perbaikan pembelajaran guna meningkatkan hasil belajar peserta-didik.Metode yang digunakan dalam penelitian ini adalah Penelitian Tindakan Kelas (PTK) empat siklus dengan beberapa fase yang terdiri dari: merencanakan, bertindak, mengamati, dan merefleksi. Berdasarkan hasil praktik, observasi, dan refleksi dalam penelitian ini ditemukan bahwa dalam fase observasi lapangan Siklus IV terdapat 89,29% (skala 100) jumlah peserta-didik yang aktif melalui kegiatan pembelajaran kontekstual. Melalui tes formasi yang dilakukan pada setiap siklus, terdapat peningkatan hasil pre-test ke hasil post-test. Hasil ulangan harian pada kompetensi dasar peserta-didik menunjukkan bahwa 100% siswa memperoleh nilai 70%, dan nilai rata-ratanya adalah 86,58, sangat tinggi. Keywords: Model Kontekstual, PTK, hasil belajar peserta-didik. AbstractThe application of the contextual learning model is initiated by the observation of basic skill activities in Aircraft Electrical learning. The use of electrical and electronic measuring instruments in class XI-EA SMKN 12 Bandung in the 2019/2020 academic year faces several obstacles. This has an impact on student learning outcomes where only 48.6% of students achieve the Minimum Completeness Criteria (KKM). This study aims to create a profile of learning activities that will be used in the preparation of learning improvement plans in order to improve student learning outcomes.The method used in this research is a four-cycle Class Action Research (CAR) with several phases consisting of planning, acting, observing, and reflecting. Based on the results of practice, observation, and reflection in this study, it was found that in the field observation phase of Cycle IV, there were 89.29% (scale of 00) of students were active through contextual learning activities. Through the formation test conducted in each cycle, there was an increase in the results of the pre-test to the results of the post-test. The results of the daily test on students' basic competencies showed that 100% of students got a score of 70%, and the average score was 86.58, very high. Keywords: Contextual Model, CAR, student learning result.
Analisis Aspek Perilaku Bullying Peserta didik Kelas VI Madrasah Ibtidaiyah Menggunakan Perspektif Filsafat Behaviorisme
Authors: Malahati Fildza , Maemonah Maemonah , Jannati Putri
Published: March 2023

Perilaku bullying atau perundungan secara fisik, verbal dan mental yang dilakukan peserta didik, kerap menjadi fenomena yang sering terjadi di dalam lingkungan lembaga pendidikan dimulai dari kasus sepele hingga serius. Dalam sumber data aduan KPAI tahun 2021 terdapat 574 kasus penganiayaan dan 515 kasus kekerasan psikis. Padahal sudah terdapat UU No 23 pasal 54 Tahun 2002 yang menjelaskan bahwa: “Anak di dalam dan di lingkungan sekolah wajib dilindungi dari Tindakan kekerasan yang dilakukan oleh guru, pengelola sekolah atau teman-temannya di dalam sekolah yang bersangkutan atau Lembaga Pendidikan lainnya”. Oleh karena itu, perilaku bullying juga termasuk sebagai stimulus sesama peserta didik mengakibatkan respon terhadap perubahan tingkah laku ke arah negatif, dapat dicirikan secara langsung seperti penurunan aspek akademis dan aspek psikologis. Tujuan dari penelitian ini untuk untuk menganalisis perubahan tingkah laku sebagai respon yang dimbulkan terhadap stimulus perilaku bullying di lingkungan sekolah. Metode penelitian dalam penelitian ini yakni dengan menggunakan penelitian kuantitatif untuk mendeskripsikan fenomena perilaku bullying di kelas VI C Madrasah Ibtidaiyah yang berjumlah 17 siswa melalui instrument kuisioner, wawancara dan observasi. Hasil penelitian ini menunjukkan perilaku bullying yang terdapat pada siswa kelas VI C di Madrasah Ibtidaiyah kerap terjadi dalam bentuk verbal dan fisik secara seperti memukul ringan atau “mentonyol”. Sebagai respon psikologis, para korban bullying di sekolah mengalami perubahan perilaku negatif seperti sedih, marah, minder dan pendiam. Sedangkan, dalam aspek akademis dijumpai bahwa hasil evaluasi belajar Siswa kelas VI C pada mata pelajaran tematik Tema 7 Subtema 1 dan 2 menunjukan hasil dinamis atau fluktuatif. Sehingga, dapat disimpulkan bahwa sudut pandang filsafat bahaviorisme dalam penelitian ini adalah untuk mengamati perubahan tingkah laku sebagai respon yang muncul bagi korban bullying khususnya bagi siswa kelas VI C Madrasah Ibtidaiyah Darussalam Plaosan.
Panorama mundial de la producción científica sobre actos de habla: un análisis bibliométrico
Authors: Arias-Chávez Dennis , Ramos-Quispe Teresa , Postigo-Zumarán Julio Efraín
Published: March 2023

Este estudio tiene por objetivo caracterizar la producción científica mundial sobre actos de habla en las bases de datos Scopus y Web of Science desde enero del año 2000 a junio del año 2022. Para el análisis bibliométrico se utilizaron los programas Bibliometrix R, Publish or Perish v. 8.1 y VOSwiever. Los resultados evidencian una mayor producción en Scopus, en tanto que los picos de mayor producción se presentaron en los años 2010 y 2015. A partir del año 2017 se observa un crecimiento constante de la producción sobre el tema.
subjetividades posthumanas en La noche en la zona M de Alberto Chimal
Authors: Martínez Alpízar Diana
Published: March 2023

Este artículo se interesa por las subjetividades posthumanas de la novela La noche en la zona M del escritor mexicano Alberto Chimal. Primero, el análisis se centra en la constitución del mundo distópico y su relación con lo posthumano. Posteriormente, se analizan dos personajes específicos: Celeste, una mente humana que vive en un entorno digital, y «los troceados», máquinas que necesitan carne humana para repararse. A través de ellos se demuestra que la novela no solo cuestiona la división entre lo humano y lo tecnológico, sino que también articula las esperanzas, contradicciones y peligros vinculados a lo posthumano.
Predicting Cherax quadricarinatus Habitat Distribution Patterns Through the Usage of GIS and eDNA Analysis in Terengganu, Malaysia
Authors: Mohd Dali Mohamad Zulkarnain , Mohd Nasir Muhammad Syafiq Aiman , Khaleel Aliyu Garba , Leong Mun Chun , Gan Han Ming , Nik Wan Nik Ahmad Firdaus , Umar Roslan , Kamarudin Ahmad Syazni
Published: March 2023

Cherax quadricarinatus (von Martens, 1868) is a highly invasive species that is resilient and highly adaptable to environmental conditions in new locations. Its presence brings along ecosystem imbalances and causes socioeconomic losses in invaded areas. Due to the destructive behaviour, it is important to conduct preliminary assessment methods and scientific studies especially on its behavioural and dispersal patterns. Thus, this study aims to determine the habitat distribution patterns of C. quadricarinatusbased on the methods of GIS and environmental DNA (eDNA) analysis. The study was done at Felda Tenang, Terengganu, Malaysia. Based on the geographical features and climate conditions of the study area, we theorized that there are fewer and older C. quadricarinatuspresent at higher areas but more and younger C. quadricarinatus at lower areas. We found that 91.67% of the study area to be invaded, thus imploring the need for future mitigation plans to curb their dispersal into new areas. Future studies should also be done to determine the habitat distribution patterns of C. quadricarinatus in other areas.
Spatial-Temporal Abundance and Diversity of Larval Fish in Different Water Bodies (Estuary and Adjacent Coastal Waters) from Sungai Kuala Terengganu, Malaysia
Authors: Ooi Jing Kai , Hsieh Hung-Yen , Wong Li Lian , Seah Ying Giat
Published: March 2023

During larval form, various factors will affect the distributions of fish which lead to spatio-temporal variation of their assemblage. Studies on the variation provide knowledge in understanding the fish ecology. Present study aims to survey the fish larval occurrence in the estuary of Sungai Kuala Terengganu and its adjacent waters. A total of 402 larvae samples were collected using a 100 μm mesh sized Bongo net. About 334 samples were identified belonging to 23 families while the rest (equivalent to 16.92% of total catch) were unidentifiable. Three most abundant recorded families are Gobiidae (19.65% of total catch, 2.22 indv. 100 m-3), Ambassidae (12.94% of total catch, 1.47 indv. 100 m-3) and Apogonidae (9.45% of total catch, 1.02 indv. 100 m-3). Based on cluster analysis, fish larvae were divided into two groups whereby one from estuary of Sungai Kuala Terengganu and another one from its adjacent coastal water with little overlapping between them. Estuary observed higher larval density than adjacent coastal waters while larval taxa diversity recorded to be higher in the adjacent coastal waters compared to the estuary. Throughout sampling months, two larval mean density peaks were observed during June 2019 (76.19 indv. 100 m-3) and January 2020 (105.38 indv. 100 m-3).
Population Genetic Structure of the Blue Swimming Crab (Portunus pelagicus) Along the Andaman Sea Coast of Thailand
Authors: Suppapan Juthamas , Songrak Apirak , Meesook Worawitoo , Verakiat Verakiat
Published: March 2023

The blue swimming crab (Portunus pelagicus) is a valuable commercial species. In Thailand, the consumption of the blue swimming crab is increasing. To construct an effective sustainable management plan, genetic information is required. Knowledge of natural stock genetic information can help policymakers design fishing and conservation management policies to maintain genetic diversity. In our study, we examined the genetic structure of the blue swimming crab population on the Andaman Sea coast of Thailand. Partial sequences of the mitochondrial DNA control region (mtDNA CR) with a size of 369-371 base pairs were studied in 150 individuals collected from five sampling sites along Thailand's Andaman Sea coast. Seventy-one haplotypes were characterized by 127 polymorphic sites, indicating high haplotype diversity but low nucleotide diversity across five localities. The multiple tests of population genetic analysis showed a lack of genetic structure. The absence of genetic structure was possibly caused by a high level of gene flow due to the larval blue swimming crab's high dispersal ability. Demographic history findings indicate that the blue swimming crab population has expanded. The findings of our study can be used to guide the management of the blue swimming crab in this region of the Andaman Sea to conserve genetic diversity.
UHPLC-Q-Orbitrap HRMS-Based Metabolomic Reveal Biological Pathways Involved in Rice (Oryza sativa L.) under Fe Toxicity Stress
Authors: Turhadi Turhadi , Hamim Hamim , Ghulamahdi Munif , Miftahudin Miftahudin
Published: March 2023

The iron (Fe) toxicity stress is still a serious problem in rice cultivation, especially on land with high Fe content. The Fe toxicity stress affects various complex physiological aspects of plants. The metabolomic analysis using LC-MS is expected to provide information about rice's metabolism regulation under Fe toxicity stress. The objective of this study was to show the biological pathway signature in rice after exposure to Fe toxicity stress using UHPLC-Q-Orbitrap HRMS-based metabolomic analysis. The two rice varieties, i.e., IR64 (Fe-sensitive) and Pokkali (Fe-tolerant) were analyzed their metabolites using UHPLC-Q-Orbitrap HRMS. The metabolite profiles of both varieties were analyzed using MetaboAnalyst 5.0 software. The results showed that Fe toxicity stress affected the metabolite profile in both root and shoot tissues of two rice varieties. A number of 102 metabolites were detected in root and shoot tissues of rice. The comprehensive univariate and multivariate analyses showed that 1-aminocyclopropane-1-carboxylate (ACC) in shoot tissues and galactose in root tissues was suggested as metabolite markers for Fe tolerance character of rice var. Pokkali. The genes encoded the enzymes involved in biosynthetic pathway of both metabolite markers could be a target to be explored for Fe toxicity tolerance in rice.
Hypoglycemic Effect of Flavonoid Glabridin Prevents Homeostatic Disruption of Native Achilles Tendon in Streptozotocin-Induced Type I Diabetic Rats
Authors: Nopparat Jongdee , Khimmaktong Wipapan , Pholpramool Chumpol , Tipbunjong Chittipong
Published: March 2023

Diabetic mellitus is a complex and serious disorder characterized by poor glycemic control leading to tendon architectural alterations and inflammation. This study aimed to investigate the protective effects of glabridin, a polyphenolic flavonoid, on architecture and inflammation of the Achilles tendon in streptozotocin-induced type 1 diabetic rats. Type 1 diabetes was induced by a single intraperitoneal injection of streptozotocin (60 mg/kg b.wt.). After confirmation of the diabetic state, the rats were divided into four groups; normal control, diabetic control, diabetic + glabridin (40 mg/kg b.wt.), and diabetic + glyburide (5 mg/kg b.wt.) as a positive control group. After 8 weeks of treatment, the Achilles tendons were collected and subjected to histopathological examinations with hematoxylin and eosin, Masson’s trichrome, periodic acid Schiff, and toluidine blue staining. Immunohistochemical staining (IHC) was also performed to study the inflammation of the tendon tissues. Histopathological examinations showed the protective effects of glabridin against hyperglycemia-induced collagen disorganization and deposition of glycoproteins in the extracellular matrix of the tendon. Treatment with glabridin significantly decreased the interfibrillar length, interfibrillar space, and number of infiltrated mast cells in the tendon tissue of diabetic rats. In addition, IHC staining showed that administration of glabridin drastically attenuated advance glycation end products (AGEs) formation and accumulation, and decreased the IL-1β and TNF-α positive stains compared to the non-treated diabetic control group. Taken together, this study showed glabridin prevents architectural alterations and suppresses inflammation in the Achilles tendon of diabetic rats.
Variations in the Indonesian Sauromatum horsfieldii Miq. (Araceae) Based on Characteristics of Morphology, Anatomy and Cytology
Authors: Yuzammi Yuzammi , Inggit Puji Astuti Inggit Puji Astuti , Tri Handayani Tri Handayani , Titut Yulistyarini Titut Yulistyarini , Julisasi Tri Hadiah Julisasi Tri Hadiah
Published: March 2023

Sauromatum horfieldii Miq. (Araceae) is distributed from India, China to South East Asia. In Indonesia, the species only occurs in Sumatera, Jawa, and Bali. This study investigated the morphological, anatomical, and cytological diversity of three populations of the species, one from each of these Indonesian islands. The results showed that there was variation in morphology of the petiole, number of leaflets and leaf margin. The stomatal complex consisted of elliptical pores with reniform guard cells and two or three subsidiary cells. The Indonesian plants of S. horsfieldii possessed two stomatal types, namely anomocytic and anisocytic, both with abaxial distribution (hypostomatic). Measurements on each population showed average stomatal indices (SI) of 10.01, 10.02 and 14.55, average stomatal lengths of 34.6, 33.8 and 29.50 μm, and average stomatal widths of 20.8, 21.1 and 16.50 μm for Sumatera, Jawa, and Bali, respectively. The epidermal cells are mostly irregular and somewhat undulate. The chromosome number for all the accessions was 2n = 26.
Statistical Properties and Estimation of the Three-Parameter Lindley Distribution with Application to COVID-19 Data
Authors: Thamer Mathil Kamil , Zine Raoudha
Published: March 2023

In a recent article by Shanker et al. (2017), the three-parameter Lindley distribution has been studied. The present paper is a continuation of the investigation of the properties of this distribution because of its high flexibility for modeling lifetime data. We studied some statistical properties of this distribution as central tendency measures, dispersion measures, and shape measures. In addition, the mode and the quantile function of the distribution were derived by the authors. The three parameters were estimated by the Maximum Product of Spacing Method (MPS) due to its fame in estimating parameters. A simulation study is carried out to examine the consistency of estimators using mean square error (MSE). The estimators showed that they have the property of consistency because MSEs decrease with increasing the size of the sample. On the practical side, the MPS estimates were used to obtain statistical properties, probability density function (p.d.f), cumulative distribution function (c.d.f), survival function, and hazard function for real data which represents COVID-19 Data in Iraq/Al-Anbar Province. We found the flexibility of the distribution in representing life data and the possibility of getting the patients' probability of death and probability of survival for the time.
Mekanik, kimyasal ve hibrit yüzey aşındırma işlemlerinin AA7075 alüminyum alaşımının yüzey enerjisine etkisi
Authors: HAMAMCI Benek , ÖZTÜRK Burcu
Published: March 2023

Yapıştırma bağlantı dayanımı, malzeme yüzeylerinin birbirleri ile etkileşimlerine ve numunelerin yüzey morfolojilerine bağlı olarak değişiklik gösterdiği bilinmektedir. İyi bir yapışmanın elde edilmesi için yeterli yüzey koşulu gerekmektedir. Yüzey morfolojisi, pürüzlülük değerleri ve serbest yüzey enerji (SYE) değerleri bağlantı dayanımına nasıl etki ettiği ve bu değerlerin kendi arasındaki ilişkileri önem arz etmektedir. Bu çalışmanın amacı, kimyasal dağlama, kumlama ve hem kumlama hem de kimyasal dağlama ile hibrit aşındırılmış yüzeylerin, Yüzey morfolojisi, pürüzlülük değerleri, temas açısı ve SYE değerleri arasındaki ilişki araştırılmıştır. Farklı tekniklerle aşındırılan yüzeylerin farklı yüzey morfolojileri oluşmuştur. Farklı yüzey morfolojilerine sahip numunelerin yüzeyine farklı sıvılar kullanılarak temas açı değerleri tespit edilmiştir. Ayrıca Aşındırılan AA7075 numunelerin yüzey morfolojisi taramalı elektron mikroskobu (SEM) ve 3D profilometre ile analiz edilmiş, yüzey pürüzlülük değerleri belirlenmiştir. Farklı tekniklerle aşındırılan yüzeylerin farklı yüzey morfolojileri oluşmuştur. Yüzeylerin, SYE ve temas açısı değerleri ise yüzeyin ne kadar ıslatılabilir olduğu hakkında bize bilgi verir. Bu sebepten AA7075 yüzeylerinin yüzey pürüzlülük ve SYE değerleri kıyaslanmış ve yüzeylerin mekanik, termodinamik ilişkileri çalışmada ortaya konulmuştur. SYE hesaplamalarında OWRK ve Zisman metodu kullanılmış ve iki yöntemden elde edilen değerlerin birbiri ile tutarlı olduğu görülmüştür. En yüksek SYE değerleri kumlama+0,5M NaOH ve kumlama+1M NaOH olan hibrit aşındırılan yüzeylerde elde edilmiştir. Her bir yüzey işleminde yüzey pürüzlülük değerleri farklı değerler almıştır. Sonuç olarak yüzey pürüzlülük değerleri ve SYE arasında doğrudan bir ilişki olmadığı görülmüştür.
Cataract disease classification from fundus images with transfer learning based deep learning model on two ocular disease datasets
Authors: ÇETİNER Halit
Published: March 2023

Cataract is one of the most serious eye diseases that can blind if left untreated. Detection of the disease in the early stages rather than in the advanced stages can prevent the patient from being blind. At this point, suspected patients should be constantly checked. Continuous control and follow-up of patients is a tiring and laborious process. For the reasons stated, two different deep learning models are proposed in this article that can be used in the diagnosis and detection of cataracts to assist the work and procedures of ophthalmologists. The proposed deep learning models were run on a fundus dataset with normal and cataract symptoms. The proposed deep learning models provide automatic classification of normal and cataract images. Fine-tuning and layer additions were performed on the upper layer using a pre-trained deep learning model called MobileNet V3 Small. A basic MobileNet V3 Small model has also been created to evaluate the performance of the model, which has been enriched by fine-tuning and adding layers to its upper layers. The difference between the proposed model and the basic model is demonstrated by comparing the classification performances of cataract and normal images with accuracy and complexity matrix measurements. According to the best results obtained in the performance comparisons made by separating the training and test data according to the KFold option, the proposed model gave a more successful result graph of 8.26% than the basic model. Finally, the proposed MobileNet V3 model has also been tested on images composed of two different datasets. On average, the proposed MobileNet V3 model on the combined dataset reached 96.62% accuracy.
Öznitelik seçimi problemleri için ikili beyaz köpekbalığı optimizasyon algoritması
Authors: KUTLU ONAY Funda
Published: March 2023

Öznitelik seçimi, makine öğrenmesi problemlerinde kabul edilebilir bir sınıflandırma doğruluğunu hedeflerken, aynı zamanda büyük ölçekli bir veri kümesinden gereksiz, alakasız ve gürültülü öznitelikleri elimine etme işlemidir. Aslında öznitelik seçimi de bir optimizasyon problemi olarak nitelendirilebilir. Literatürde metasezgisel optimizasyon algoritmalarının, optimum öznitelik alt kümelerinin bulunmasında başarılı performansa sahip olduğu çalışmalar mevcuttur. Bu çalışmada da beyaz köpek balığı optimizasyon algoritması (BKO), S, V ve U-şekilli transfer fonksiyonları ile ikili forma dönüştürülerek öznitelik seçimi için kullanılmıştır. Önerilen yöntemler UCI veri deposundaki sekiz farklı veri kümesi üzerinde uygulanmış ve sınıflandırma doğrulukları, uygunluk değerleri ve seçilen öznitelik sayıları yönünden incelenmiştir. Sınıflandırıcı olarak k-en yakın komşuluk sınıflandırıcısı kullanılmıştır. Daha sonra farklı metasezgisel algoritmalarla karşılaştırılarak Freidman sıralama testi uygulanmıştır. Deneysel sonuçlar önerilen metotların, öznitelik seçiminde başarılı olduğunu ve sınıflandırma başarısını artırdığını göstermektedir. Özellikle V ve U-şekilli versiyonların daha kararlı ve yüksek doğrulukla sonuçlar ürettiği yorumu yapılabilir.
Doğal taş artıkları kullanılarak üretilen yapay mermerlerin farklı çevresel koşullara karşı duraylılıklarının araştırılması
Authors: EREN SARICI Didem , ASLANTEPE Gizem
Published: March 2023

Yapı sektöründe yaygın biçimde kullanılan doğal taş ve mermerlerin ocakta üretimi ve fabrikalarda nihai ürün haline getirilmeleri sırasında azımsanmayacak oranda artık malzeme meydana gelmektedir. Bu artık malzemelerin değerlendirme olanaklarının araştırılması, çevre kirliliğin azaltılması, ülke ekonomisine katkı sağlanması ve mermer yataklarının rezervlerinin korunması açısından önem arz etmektedir. Yapay mermer üretiminde söz konusu bu doğal taş ve mermer artıklarının kullanılabilme olanaklarının araştırılması bu çalışmanın konusunu oluşturmaktadır. Bu kapsamda, Eskişehir bölgesinden temin edilen granit artıkları ile Malatya bölgesinden temin edilen mermer artıkları polyester reçine ile belirlenen oranlarda karıştırılmış, kalıplanarak yapay mermer numuneleri üretilmiştir. Elde edilen numunelerin fiziko-mekanik özellikleri TSE ve ISRM standartlarında tanımlanan yöntemlere göre belirlenmiştir. Bunlara ek olarak elde edilen numunelerin değişik çevresel koşullara karşı duraylılıklarını belirlemek amacıyla tuz kristallenmesi, termal şok ve donma çözünme döngüleri uygulanmıştır. Döngüler sonunda mermerlerde gelişen ağırlık kayıpları, yüzey renk özelliklerindeki değişimler belirlenmiştir. Elde edilen numunelerin fizikomekanik özelliklerinin mermer ve doğal taşlar için uygun sınırlarda olduğu görülmüştür. Uygulanan çevresel koşullardan termal şok uygulamalarının yapay mermer örnekleri üzerinde en çok tahribat yaratan uygulama olduğu belirlenmiştir.
Yüksek mertebe sonlu eleman modeliyle fonksiyonel derecelendirilmiş kirişlerin serbest titreşim ve statik analizi
Authors: TURAN Muhittin , HACIOĞLU Mahmut İlter
Published: March 2023

Bu çalışmada, fonksiyonel derecelendirilmiş (FD) kirişlerin yüksek mertebeden kayma deformasyonlu kiriş teorisine dayalı sonlu eleman yöntemiyle serbest titreşim ve statik analizleri incelenmiştir. Sonlu elemanlar yöntemi için 5 düğümlü ve 16 serbestlikli bir sonlu eleman önerilmiştir. FD kirişin malzeme özelliği kiriş kalınlığı boyunca belli bir kuvvet kuralı fonksiyona bağlı olarak değişmektedir. Lagrange eşitliği ile denge denklemleri türetilmiştir. Farklı kuvvet fonksiyonu üst indisine (p), farklı sınır şartlarına ve farklı narinliklere (L/h) göre FD kirişin boyutsuz doğal frekansları, boyutsuz yer değiştirmeleri, boyutsuz normal ve kayma gerilmeleri elde edilmiştir. Çalışmadan elde edilen sonuçlar literatür ile karşılaştırılmış ve önerilen sonlu elemanın FD kirişler için oldukça uyumlu sonuçlar verdiği görülmüştür.
Factors associated with resistant disease in pediatric differentiated thyroid carcinomas
Authors: KÜÇÜKER Kadir Alper , GÜNEY İsa Burak , YAPAR Zeynep
Published: March 2023

Purpose: Thyroid carcinoma is the most common carcinoma that originated from endocrine tissue in pediatric patients. Pediatric thyroid carcinomas are more prone to reveal lymph node or lung metastasis and recurrence. In this study, clinical, pathological and genetic features that may be related with resistant differentiated thyroid carcinoma in pediatric patients were investigated.

Materials and Methodsː Thirty-nine pediatric patients who were 18 years old and below and were given 131I Radioactive Iodine (RAI) therapy were included to the study. 131I RAI therapy was planned in accordance with the American Thyroid Association (ATA) Guideline. Clinical and postoperative pathological features of patients were retrospectively determined and the patients who received single or multiple RAI therapy due to resistant disease compared statistically in terms of these features. Genetic analysis was also made in the patients who received multiple therapies.

Resultsː Thirty-one patients were female and 8 patients were male. Thirty-four patients had papillary thyroid carcinoma, 4 had follicular thyroid carcinoma and 1 had mixed papillary-oncocytic carcinoma of patients. Eight patients received multiple I-131 RAI therapy cycles due to resistant disease. Any clinical, pathological feature and genetic mutation that would indicate resistant disease was not found in these patients.

Conclusionː Although pediatric thyroid carcinoma is rarely seen, it has an increasing incidence in recent years. We were not able to reveal any feature related to resistant disease in our limited group. Clinical, pathological and genetic characteristics related to poor prognosis must be investigated with larger study groups.
Evaluation of upper gastrointestinal system endoscopy screening in patients with acromegaly: a single center experience
Authors: EMÜR GÜNAY Yasemin , DURAK Serdar , ÜÇÜNCÜ Ozge , COŞAR Arif Mansur
Published: March 2023

Purpose: The prevalence of precancerous or cancerous lesions in the upper gastrointestinal tract in acromegalic patients is not well known. The aim of this study is to evaluate the endoscopic findings of the upper gastrointestinal system (GIS) of patients with acromegaly and to assess whether the pathological findings are related to the disease and the use of somatostatin analogs.

Materials and Methods: Between January 2010 and October 2021, patients diagnosed with acromegaly were identified by retrospective medical record scanning. This study included 49 patients with acromegaly who underwent upper GIS endoscopy. The acromegaly patients were divided into two groups: those who were taking somatostatin analogs at the time of endoscopy and those who were not. It was investigated whether there was a difference between these two groups in terms of lesion development. The patients with acromegaly and the control group were compared in terms of endoscopic findings and biopsy results.

Results: Of these patients, 53% (n=26) were male and 46.9% (n=23) were female. The incidence of Helicobacter pylori (HP) was significantly higher in the acromegaly patients than in the control subjects. In the acromegaly group, 62.5% (n=15) of the 24 patients with antral and pangastritis were taking somatostatin analogs. There was no significant difference between the use of somatostatin analogs and the development of gastritis. The development of esophagitis was statistically higher in patients with acromegaly taking somatostatin analogs.

Conclusion: The incidence of HP was higher in patients with acromegaly than in the normal population. No clear results were found regarding the development of gastritis. The incidence of esophagitis was high in acromegalic patients taking somatostatin analogs. Large-scale studies are needed to uncover the relationship between the etiology of the disease and the drugs taken.
The effect of clinicopathological features on prognosis in malignant ovarian germ cell tumors
Authors: SEYİDOVA Yegana , SEYFETTİNOĞLU Sevtap , KÜÇÜKGÖZ GÜLEÇ Ümran , KHATİB Ghanim , GÜZEL Ahmet Barış , GÜMÜRDÜLÜ Derya , PAYDAŞ Semra , VARDAR Mehmet Ali
Published: March 2023

Purpose: Malignant ovarian germ cell tumors cause 5% of ovarian cancers. Studies examining prognosis and survival rates are significant due to malignant ovarian germ cell tumors' rarity. We aimed to investigate outcome and prognostic factors in these patients.

Materials and Methods: The study includes clinicopathological records of malignant ovarian germ cell tumor patients in our clinic between April 1992 and November 2017. Demographic and clinical characteristics, pathological observations, adjuvant treatment modalities, and follow-up details were analyzed, and their survival effects were investigated.

Results: One hundred fifteen patients with malignant ovarian germ cell tumors were analyzed. Most patients were reproductive-age nulliparous. The patients' mean age was 27.5+14.3, and the mean follow-up was 71.04 months. The research includes 42 dysgerminomas, 37 immature teratomas, 17 mixed germ-cell tumors, 16 endodermal sinus tumors, and three embryonic carcinomas. The disease stage was 1, 2, 3, and 4 in 53%, 16.5%, 25.2%, and 5.2% of patients, respectively.

Fertility-sparing surgery was conducted in 55 of 79 patients, and 34.5% received pregnancy. Five-year overall survival was 74%. Localization of tumors, non-optimal cytoreduction, advanced-stage disease, poor differentiation, metastasis, and mixed cell histology were determined as poor prognostic factors. In multivariate analyzes, factors affecting disease-free survival are the FIGO stage, mixed germ cell histology, and suboptimal cytoreduction.

Conclusion: The prognosis of malignant ovarian germ cell tumors is excellent, especially in young, early-stage, and adequately operated patients. FIGO Stage, mixed germ cell histopathology and complete cytoreduction affect the prognosis of MOGCT. Treatment at reproductive age does not significantly affect pregnancy outcomes. Therefore, the fertility sparring approach should be considered a good option, especially in young patients.
Effect of microsatellite instability on histopathological parameters and prognosis in colon cancers
Authors: TOYRAN Tuğba , ERDOGAN Kivilcim , KILIÇ BAĞIR Emine , AÇIKALIN Arbil , AKSIN Merve , PAYDAŞ Semra , METE Burak , ERDOGAN Seyda
Published: March 2023

Purpose: The aim of this study was to compare the clinicopathological features, while evaluating the frequency of MSI, and the survival rates in these patients in our patient group with MSI and microsatellite stabil (MSS) colorectal carcinomas (CRCs).Materials and Methods: We retrospectively enrolled 146 patients who underwent colon resection between the years of 2014-2022. The expression of MSI status was evaluated by immunohistochemistry. The association of MSI status, presense of tumor-infiltrating lymphocytes (TILs), and tumor budding score with a patient’s survival was assessed by the Kaplan–Meier method and Cox regression analysis.Results: There were 104 (71.2%) MSS cases and, 42 (28.8%) MSI cases. 15 (10.3%) MSI tumors were found to be MSI-low, and 27 (18.5%) to be MSI-high. MSI tumors were significantly associated with younger patients (<50), earlier stage (T1-T2), right localization, lower rate of lymph node metastasis, presence of mucinous component and TILs response. The Cox-regression model revealed TILs, tumor budding score, and MSI are variables that significantly affect survival. The presence of TILs exhibited a protective effect (Hazard ratio (HR)=0.446), which decreased the mortality risk by 2.24 times for the follow-up period, while the presence of high TBS increased the risk of mortality by HR=3.22.Conclusion: This study revealed that patients with MSI CRCs may show unique clinicopathological features and should be evaluated using some guiding parameters that will improve survival.
Simple recommendation for cases requiring re-excision on breast surgery
Authors: DALDA Yasin , SAHIN Emrah , KUTLUTÜRK Koray
Published: March 2023

Breast cancer is an important health problem that especially affects women. In breast cancer where surgical procedures are the primary treatment modality, breast-conserving surgery with radiotherapy is becoming more popular than mastectomy. Re-excision may be necessary in cases of recurrence or positive surgical margins. Damage to the cavity formed due to scar formation in the old operation lodge may make dissection difficult. Failure to see the dissection plan clearly may result in incomplete surgery or removal of excess tissue. We present how we macroscopically removed the lesion with clear margins with a simple technique we performed during surgery in a patient who underwent breast-conserving surgery for breast cancer and presented with suspicion of recurrence.
Allergic rhinitis approach in primary healthcare
Authors: FİDANCI İzzet
Published: March 2023

Allergic rhinitis is a disease that can be seen in almost one third of societies and affect the quality of life. It has various symptoms and can also be seen combined with other diseases. Although the treatment method can vary based on the patient's characteristics, generally, avoiding the allergen, which is considered to be the source of allergy, and pharmacotherapy are sufficient. The treatment for allergic rhinitis can be performed in primary healthcare services which adopts a holistic approach. However, if the recovery of the patient cannot be achieved, they need to be directed to the otorhinolaryngology department and surgical treatment options and, if necessary, immunotherapy treatment options should be considered.
The effect of astaxanthin on amiodarone induced cardiac tissue damage in rat
Authors: KARA Özlem , KİLİTCİ Asuman
Published: March 2023

Purpose: The aim of this study was to evaluate the effect of astaxanthin on amiodarone induced cardiac tissue damage.

Materials and Methods: 3 groups were formed using 30 Wistar albino rats. In group 1 (control group) (n=10), neither any drugs were given nor anything was performed. In group 2 (amiodarone group) (n=10), 100 mg/kg amiodarone was given for 7 days. In group 3 (amiodarone+astaxanthin group) (n=10), 100 mg/kg amiodarone and 25 mg/kg astaxanthin were given for 7 days. Hearts were surgically extirpated in all groups. Blood malondialdehyde (MDA) levels and activities of catalase (CAT) and superoxide dismutase (SOD) were measured. Also, toxicity markers such as edema, hemorrhage, fibrosis, inflammatory cell infiltration were assessed by examining the slides prepared from cardiac tissue with microscopy.

Results: The MDA levels were significantly higher and the activities of SOD, and CAT were lower in group 2 than group 3. Tissue damage was significantly higher in group 2 than group 3.

Conclusion: According to our short term findings, astaxanthin reversed the toxicity of amiodarone on cardiac tissue. In the light of these promising results, we suggest that astaxanthin usage should be thought to protect the cardiac damage due to amiodarone.
Elderly but could be mastoiditis?
Authors: GOKDEMIR Ozden , ÖZÇAKAR Nilgün
Published: March 2023

Mastoiditis is a condition that can occur two weeks after the onset of acute suppurative otitis media. With the assistance of her daughter, an 86-year-old female patient presented to the family medicine outpatient clinic with complaints of urinary incontinence and fatigue. Although the prevalence of otitis media in the elderly population varies by country, it is generally low, ranging between 0.25 and 9%. Older patients have otalgia with or without hearing loss or symptoms. Infection can cause mastoiditis, petrositis, and labyrinthitis through adjacent structures. The aim of this case report is to emphasize the importance of the subject by evaluating the elderly patient with mastoiditis in our clinic.
Post-vaccination skin lesions: bullous pemphigoid
Authors: ÖZKAN Abuzer , ÖZDEMİR Serdar , EKER MARANGOZ Ayşen
Published: March 2023

COVID-19 pandemic started in Wuhan in December 2019, spread to countries, and negatively affected world health. The only way to get rid of the pandemic was the widespread use of vaccines all over the world. Vaccines were developed so quickly, there wasn't enough time to see all their side effects. Many articles have been published on the adverse effects of SARS-CoV-2 vaccines. These side effects are swelling or redness at the injection site, fatigue, mild fever, chills, headache, muscle, and joint pain, vomiting and diarrhea. CoronaVac® is an inactivated virus vaccine originating in China. Autoimmune diseases can be seen after inactivaved virus vaccine applications.
The adherence of parents regarding epinephrine auto-injector use in anaphylaxis management: a real-life study
Authors: SERBES Mahir , ŞAŞİHÜSEYİNOĞLU Ayşe Şenay , ÖZCAN Dilek , KİSLA EKİNCİ Rabia Miray , BALCI Sibel , ALTİNTAS Derya
Published: March 2023

Purpose: The purpose of this study was to identify unmet needs in the management of anaphylaxis by assessing the practical skills of the parent(s) regarding the use of epinephrine auto-injectors (EAIs) and determining the factors influencing them.

Materials and Methods: The study included 114 primary caregivers of children prescribed an EAI with an anaphylaxis risk. A structured mini-interview with a practice test using a trainer device was performed.

Results: Epinephrine was described as a life-saving and first-line treatment for anaphylaxis by 93 parents (81.6%). However, only 53 parents (46.5%) stated that they carry an EIA device with them regularly in their daily lives. 38 children (33.3%) had relapsing episodes, but among those experiencing anaphylaxis, only 6 parents (20%) used EAI despite carrying. According to respondents, the main factor avoiding AEI's regular carriage was a lack of belief in necessity (18, 29.5%). Among participants, only 13 (11.4%) of the parents were able to administer EAI correctly in all 5 steps. An inverse relationship between the ability to use the device and the time elapsed since the last visit s was found.

Conclusion: Low adherence levels among parents highlighted the urgent need to improve this situation. Interventions including regular EAI training and psychological support should be provided among parents, but may not guarantee to maintain acquired adherence to EAIs in real life.
O Contínuo e as Possibilidades de Vivência: um Olhar ao Trabalho com Geometria Dinâmica
Authors: Pinheiro José Milton Lopes
Published: March 2023

Neste artigo, são trazidas concepções acerca do contínuo e da continuidade e são tecidas compreensões de como podem se doar em experiências vivenciadas. Como expressão da continuidade, destaca-se o movimento, articulando-o à motricidade de um sujeito, visando explicitar como se dá a percepção da continuidade na computação (que é binária), com olhar voltado ao trabalho em ambientes de Geometria Dinâmica. Expõe-se os entendimentos que emergem de um estudo bibliográfico sobre a temática em textos no âmbito da Matemática, Educação Matemática, Computação e Filosofia/Fenomenologia. Dentre as compreensões articuladas no estudo, se expõe que a continuidade se mostra na atualização de uma possibilidade de movimento projetada no software de Geometria Dinâmica. Nesta atualização, há um fluir que abarca a programação, o sujeito que atualiza o programado, o mouse, a tela e a figura-em-movimento, constituindo uma unidade de ação cuja expressão avança deixando um rastro contínuo perceptível que evidencia uma duração preenchida espacial e temporalmente. Esse rastro se expõe na máquina/interface e também no sujeito que, ao habitá-la, faz dela uma extensão de seu corpo e de sua intencionalidade.
Palavras-chave: Movimento. Continuidade. Contínuo. Computação. Geometria Dinâmica. Fenomenologia.
AbstractIn this article, conceptions about continuous and continuity are brought up and figured out understandings of how they can be perceived in lived experiences. As an expression of continuity, the movement stands out, articulating it to the motricity of a subject, aiming to explain how the perception of continuity in computing (which is binary) occurs, with a look turned to work in Dynamic Geometry environments. It exposes the understandings that emerge from a bibliographic study on the subject in texts in the field of Mathematics, Mathematical Education, Computing and Philosophy/Phenomenology. Among the understandings articulated in the study, it is carryed out that the continuity is shown in the update of a possibility of movement projected in the Dynamic Geometry software. In this update, there is a flow that encompasses the programming, the subject that updates the programmed, the mouse, the screen and the figure-in-motion, constituting a unit of action whose expression advances leaving a perceptible continuous trail that shows a full spatial and temporally duration. This trail is exposed in the machine / interface and also in the subject, who when inhabiting it makes it an extension of its body and his intentionality.
Keywords: Movement. Continuity. Continuous. Computing. Dynamic Geometry. Phenomenology.