bluuebunny/crossref_metadata_2025 huggingface dataset:
Array analysis of the ground velocities and accelerations from the 1971 San Fernando, California, earthquake
Authors: Liu Hsui-Lin , Heaton Thomas
Published: July 2021

Profiles of ground velocity and acceleration, displayed as a function of epicentral distance, are analyzed for recordings of the 1971 San Fernando earthquake. Three long profiles (>50 km) and three short profiles (<2 km) are studied. Although there is considerable variation in waveforms and peak amplitudes observed along the long profiles, there are also many examples of coherent phases seen on adjacent stations. There are striking differences in the amplitudes and durations of ground velocity observed at stations located on hard rock sites as opposed to stations located within the large sedimentary basins of the Los Angeles area. Furthermore, the San Fernando Basin, which is adjacent to the source area, seems to respond quite differently from the Los Angeles Basin which is about 30 km from the earthquake source area. Ground acceleration profiles, however, show that there is no corresponding change in the duration or amplitude of high-frequency shaking with site characteristics. We infer that the excitation of surface waves within sedimentary basins is the reason that large peak velocities and displacements are observed for soft sites. The ground velocity waveforms are nearly identical along the three short profiles, which are all located within the Los Angeles Basin. Greater variation of waveforms and amplitudes are seen for ground acceleration along these short profiles, although strong phase coherence is still observed.
Pwaveform of large, shallow earthquakes along the Mexican subduction zone
Authors: Singh S. K. , Dominguez T. , Caştro R. , Rodriguez M.
Published: July 2021

We combine qualitative analysis of Wiechert seismograms with quantitative analysis of Galizin-Wilip and Press-Ewing seismograms from Europe to draw conclusions regarding simplicity/complexity of P waveforms of large, shallow earthquakes since 1907 which occurred along the Mexican subduction zone. These seismograms are compared with LP WWSSN seismograms of recent earthquakes. It is found that the earthquakes in Oaxaca are simple with two exceptions. The earthquake of 15 January 1931 (MS = 8.0) was a complex, intraplate event with normal or strike-slip faulting. Some earthquakes are simple, and others are complex in the subregions of Guerrero and Michoacan. All three earthquakes in Jalisco are complex. The depths of the events are shallow (10 ≲ H ≲ 20 km) with the majority being at 16 km. The simplicity of events, the evidence of a characteristic magnitude of MS ≃ 7.8, and the ratio of surface wave to P-wave seismic moment of about 1.5 in Oaxaca suggest rather homogeneous asperities of nearly equal dimension separated by barriers. Elsewhere, the interface of the plates is characterized by smaller asperities of differing sizes separated by areas where aseismic deformation may occur. The earthquakes of 22 February 1943 (MS = 7.7) and 14 March 1979 (MS = 7.6) which were supposed to have broken the same area show drastically different P waveforms. It appears that the location of the 22 February 1943 earthquake is in error. Alternatively, the same area may have been broken with entirely different rupture processes.
Modeling of the surface static displacements and fault plane slip for the 1979 Imperial Valley earthquake
Authors: Slade Martin A. , Lyzenga Gregory A. , Raefsky Arthur
Published: July 2021

Synthesis of geodetic and seismological results for the 1979 Imperial Valley earthquake is approached using three-dimensional finite element modeling techniques. The displacements and stresses are calculated elastically throughout the modeled region. The vertical elastic structure in the model is derived from compressional and shear wave velocities as used in the seismic data analysis (Fuis et al., 1981) combined with a sediment density profile. Two strategies for applying initial conditions are followed in this modeling. In the first strategy, a sample seismological estimate for fault plane slip is used to predict the resultant surface motions. We show that the geodetic strain results over distances of tens of kilometer from the fault (Snay et al., 1982) are basically consistent with the model seismic fault displacements. Geodetic results from within a few kilometers of the fault trace (Mason et al., 1981) seem to require more slip at shallow depths than appears at seismic time scales. This is consistent with the occurrence of aftercreep at shallow depths in less well-consolidated material, which would bring surface displacements into line with maximum slip at depth, but not greatly affect the net moment.

In the second strategy, we consider stresses on the fault plane, rather than displacements, as model variables. To constrain this part of our numerical modeling, we assume that the fault driving stress is governed by ambient tectonic stress and an opposing Coulomb friction derived from experiment. The coseismic stress drop from point to point on the failed fault is given by the difference between the tectonic shear stress and the frictional stress. After arriving at such a uniform model which adequately represents the Snay et al. results, we further modify a small region near the seismic “asperity” to make the fault plane motions qualitatively and quantitatively resemble the model of coseismic motions used in the first strategy. The observed offset on the fault trace (Sharp et al., 1982) is approximated in this final stress-driven model by removing the driving stress on the southern third of the fault.

Thus, the principal features of the coseismic slip pattern are explained by a stress-driven fault model in which: (a) a spatially unresolved asperity is found equivalent to a stress drop of 18 MPa averaged over an area of 15 km2, and (b) driving stress is essentially absent on the fault segment overlapping the 1940 earthquake rupture zone.
A one-parameter expression of seismicity patterns in space and time
Authors: Matsumura Shozo
Published: July 2021

A technique to express changes in seismicity patterns by means of an objective criterion has been investigated. A parameter v2=(Δ¯)2/Δ¯2, where Δ is the distance between two adjacent earthquakes in space and time, was derived on the basis of the Weibull distribution function. This parameter can be related to an apparent interaction in the earthquake sequences and used to monitor changes of the seismicity patterns which may reflect the state of the crustal stress. The patterns are classified as regular, completely random, and clustered according to the value of v2.

The technique was applied to the U.S. Geological Survey microearthquake catalog for central California. A total of 9740 earthquakes (M ≧ 1.5) was selected from along the 250-km-long creeping zone of the San Andreas and Calaveras faults for the period 1971 to 1981. The seismicity pattern was found to be generally a combination of highly clustered ones overlapped with a background, which was characterized as almost random or slightly clustered.
Teen resilience: the role of school and family connectedness
Authors: Orozco-Solís Mercedes Gabriela , Bravo-Andrade Héctor Rubén , Ruvalcaba-Romero Norma A , Alfaro-Beracoechea Laura Nadhielii
Published: July 2021

The sense of connectedness with family and school is an element associated with the psychosocial development in adolescents, being a factor that can influence the way they respond against adversity and adjust to change. This study aimed to establish the predictive value of intrafamilial relationships and connectedness with school, teachers, and between students on resilience in Mexican high school adolescents. The sample consisted of 645 students (50.7% female), with an age range of 12 to 16 years old (M = 13.35, SD = 0.99), from a public high school of México. Participants answered the Intrafamilial Relations Assessment Scale, the subscales of social connectedness with school and students of the MDS3 School Climate Survey, and the revised Resilience Questionnaire for Children and Adolescents. The results indicated moderate positive associations between the study variables and resilience. The higher coefficients were found between intrafamilial relationships and resilience. In the predictive analysis, intrafamilial relationship, connectedness with school and between students, conserved its significance for predicting resilience, with family relationships maintaining the highest coefficient. Results suggest that the family environment is the main factor that shapes how adolescents cope with adversity. Limitations and practical implications are discussed. We conclude it is important to generate strategies that promote a higher adolescent connectedness with key environments for the development of protective factors such as resilience.
Reseña del libro: Literacidad crítica. Enseñar a leer el mundo para transformarlo a través del encuentro
Authors: García-Morís Roberto
Published: July 2021

Este libro analiza la literacidad crítica, en palabras del autor, no como un método o una técnica, sino como “una manera de enseñar para leer el mundo y transformarlo con la propia vida”. La literacidad crítica juega un importante papel en la educación para la ciudadanía y la democracia. El autor consigue abordar este proceso de lectura de la realidad desde el plano conceptual, pero también presenta una propuesta de acción centrada en cuatro dimensiones, que van desde la lectura del mundo a su transformación, en una conexión permanente con la enseñanza y aprendizaje de las problemáticas sociales.
Programa de capacitación de ecoturismo en identidad y compromiso de conservación del medio ambiente a estudiantes del de Rica Playa. Tumbes - Perú
Authors: La Rosa Feijoo Oscar Calixto , Diaz Alarcón Mariela
Published: July 2021

En los últimos años se está observando que los habitantes de las comunidades rurales en su afán de tener mejores condiciones económicas, explotan en forma irresponsable los recursos naturales, la presente investigación, propone desarrollar un programa en el que se capacite a los estudiantes de la I.E Ricardo Palma del centro poblado Rica Playa, distrito de San Jacinto, región Tumbes para que tengan como prioridad conservar su medio ambiente en forma adecuada; en este trabajo se describe los resultados que se obtuvieron después de aplicar un plan de capacitación a estudiantes de la I.E Ricardo Palma, los objetivos de estudio son: Determinar la efectividad del programa de capacitación de ecoturismo en la identidad y compromiso del estudiante en la conservación del medio ambiente, evaluar el nivel de conocimiento en ecoturismo, su identidad y compromiso del estudiante a través de un pre test; aplicar el programa de capacitación de ecoturismo en la identidad y compromiso del estudiante y evaluar el programa de capacitación de ecoturismo y su identidad y compromiso del estudiante a través de un post test. El tipo de investigación cuantitativa, aplicada, de diseño preexperimental. Se aplicó un cuestionario a una población muestral de 30 estudiantes. Se llego a la conclusión indicándose que el programa de capacitación de ecoturismo influye en la identidad y compromiso del estudiante de la IE. Por tanto, se recomienda que las autoridades, promuevan proyectos, capacitaciones para la conservación de las áreas naturales y culturales de los recursos turísticos existentes en el la región Tumbes; a los estudiantes, comprometerse a la conservación de áreas naturales y culturales, que establezcan propuestas que ayuden a solucionar problemas relacionados a la conservación de áreas naturales y culturales.
Comparison of The Growth Characteristics of Alpine X Damascus Crossbred and Damascus Kids
Authors: MUTLUKOCA Gizem , KESKİN Mahmut
Published: July 2021

Alpine and Damascus goats were crossbred in a private goat farm established in Adana that engaged in raising Damascus goat in order to develop a goat genotype that will give more milk in the hot and humid climate in summer of Çukurova region. In this study, the growth characteristics between birth and weaning of the crossbred kids were compared with Damascus kids. The animal material for the study consisted of 136 head of pure Damascus goats and 32 head of Damascus goats crossbred with Alpine goat as well as their kids. The kids were fed with their dams' milk (average 0.70 litre / head / day) for the first 15 days after birth. After this period, a mixture containing 60% goat milk and 40% kid food was used in the feeding of the kids. Kids that given kid rearing concentrate and alfalfa hay after 10th days age were weaned at the age of 60 days. At the end of the study, birth weights, weaning weights and survival rate at weaning of the crossbred and Damascus kids were determined as 2.5 ± 0.07 kg and 2.7 ± 0.05 kg (P
Okuma Güçlüğüne Sahip Öğrencilere Sunulan Öğretimde Video Teknoloji ve Bilgisayar Destekli Uygulamaların Kullanıldığı Çalışmaların İncelenmesi
Authors: YIKMIŞ Ahmet , KURTOĞLU Seniha , TOPRAK Özlem
Published: July 2021

Yaşamın birçok alanında olduğu gibi eğitim-öğretim alanında da teknoloji ve bilgisayar destekli uygulamaların yaygınlaştığı görülmektedir. Bu araştırmada, özel öğrenme güçlüklerinden biri olan okuma güçlüğüne sahip öğrencilere öğretim sunarken kullanılan video teknoloji ve bilgisayar destekli uygulamaların bağımsız değişken olarak uygulandığı çalışmaların nitel araştırma yaklaşımlarından doküman incelemesi tekniği kullanılarak betimsel olarak incelenmesi amaçlanmıştır. Alan yazın taramasında “özel öğrenme güçlüğü, okuma güçlüğü, video teknoloji, bilgisayar destekli uygulamalar” anahtar sözcükleri Türkçe ve İngilizce olarak kullanılmıştır. Yurtiçinde yapılan araştırmaların belirlenmesinde Dergipark, Google Akademik, ULAKBİM, Yükseköğretim Kurumu Ulusal Tez Merkezi veri tabanı; yurtdışı araştırmaları için E-Dergi kataloğu, Academic Search Complete, Proquest ve ERIC veri tabanları kullanılarak elektronik ortamda tarama yapılmıştır. Bu amaçla dâhil etme ölçütlerine göre belirlenen on bir çalışma katılımcı, ortam-süre, bağımlı değişken, bağımsız değişken, araştırma modeli, güvenirlik verilerine ilişkin olarak analiz edilmiş ve elde edilen bulgular yorumlanmıştır. Araştırma bulgularına göre, incelenen çalışmalarda öğretim sunarken kullanılan bilgisayar destekli uygulamalardan ‘Kidspration Hikaye Haritalama Yazılımı’, ‘Multimedia Kelime Bilgisi ve Edinimi Öğretim Yöntemi’, ‘Tablet Bilgisayar Destekli Okuma Akıcılığı Sağaltım Programı’, ‘Web Destekli Uyarlanabilir Öğretim Sistemi Programı’ ve video teknolojisi uygulamalarının okuma güçlüğüne sahip öğrencilerin sesli okuma akıcılığı, okuduğunu anlama, sözcük okuma, sözcük çözümleme, doğru ve hatalı okumaları ayırt etme becerilerinin ediniminde ve geliştirilmesinde etkili olduğu görülmüştür.
Mesleki Açık Öğretim Liseleri Programı'nın Hammond Program Değerlendirme Modeli Doğrultusunda Değerlendirilmesi
Authors: KÜÇÜKKAYHAN Sibel , ADIGÜZEL Oktay Cem
Published: July 2021

Araştırma kapsamında mesleki açık öğretim liseleri programlarının Hammond program değerlendirme modeli doğrultusunda değerlendirilmesi amaçlanmıştır. Araştırma, karma araştırma desenlerinden yakınsayan paralel karma araştırma modeli ile gerçekleştirilmiştir. Araştırmanın katılımcılarını mesleki açık öğretim liselerinde görevli öğretmen/yöneticiler ile bu liselerde öğrenim gören öğrenciler oluşturmaktadır. Nicel araştırma katılımcılarını mesleki açık öğretim liselerinde görev yapan 86 öğretmen/yönetici ve bu liselerde öğrenim gören 398 öğrenci oluşturmaktadır. Araştırmanın nitel katılımcıları ise üç öğretmen/yönetici ve dokuz öğrenciden oluşmaktadır. Araştırmada nicel veriler, anketler aracılığıyla, nitel veriler ise yarı yapılandırılmış bireysel görüşmeler ve araştırmacı günlükleri aracılığıyla toplanmıştır. Araştırmanın sonucunda Hammond program değerlendirme modelinin temel boyutu olan öğretim boyutunun organizasyon, içerik, yöntem ve imkân alt boyutlarında elde edilen bulgular sunulmuştur. Bu bulgular genel olarak, mesleki açık öğretim liseleri programlarının dezavantajlı gruplar, belirli yaş üstü bireyler, farklı alanlarda beceri kazanmak isteyen ve halihazırda yaptıkları işleriyle ilgili diploma sahibi olmak isteyen hedef kitle gruplarına yönelerek geliştirilmesi; mesleki açık öğretim sistemini daha cazip kılmak ve mezunların istihdam alanlarını genişletebilmek için işletmelerde beceri eğitiminin niteliği ve okul-sanayi iş birliği modelleri üzerine çalışmaların zenginleştirilmesi; mesleki açık öğretimin sunduğu imkânların daha kapsayıcı olabilmesi için mikro ve makro düzeyde tanıtım çalışmaların yapılması gerekliliğini ortaya koymuştur. Bu bağlamda mesleki açık öğretim ile ilgili olarak; mesleki açık öğretim liselerinin dezavantajlı gruplara yönelik potansiyelinin geliştirilmesi, mesleki açık öğretim bölümlerinin açılırken, ülkenin hangi alanlarda işgücüne ihtiyaç duyduğunun iyi belirlenmesi, mesleki açık öğretim liselerinin illerde kendine ait bürolarının oluşturulması, uygulamalı ders saatlerinin artırılması, derslerin meslek alanındaki güncel gelişmeleri kapsaması ve ders içeriklerinin, öğrencilerin iş dünyasına giriş için hazırlanabilmesine katkı sağlayacak şekilde yapılandırılarak mesleki açıdan işlev görecek bilgiler kazandırılması ve programlarının işgücü piyasalarının mevcut ve gelecek ihtiyaçlarına cevap verebilecek şekilde güncellenmesi, mesleki rehberlik ve danışmanlık hizmetlerinin iyileştirilmesi, uzaktan eğitim materyalleri hakkında öğrencilerin bilgilendirilmesi, işletmelerde beceri ve staj eğitiminin niteliğini arttırmak adına gerekli önlemlerin alınması, mesleki açık öğretim mezunlarının istihdam edilebilirlikleri ve istihdam alanlarının genişletilmesi önerilmektedir.
Online Learning Communities in Teachers’ Professional Development: A Systematic Review
Authors: SÜMER Murat
Published: July 2021

This paper aims at contributing to an understanding of using online learning communities in teachers’ professional development in the context of lifelong learning. To investigate that, this study is designed as a systematic review. Research questions of this study are indented to reveal what the most repeated keywords combining with learning communities and/or teachers’ professional development are, what the main characteristics of participants are, what the trends and difficulties in published works on teachers’ professional development are. The results have been discussed in the context of learners and learning and it is aimed to map the studies on learning communities in teachers’ professional development in the context of lifelong learning. It was found that online learning communities was also used under different names such as community of practice, computer-mediated communication and participatory media frequently. Researchers mostly used discussion boards as online communities. The other specific platforms to build an online communities were found to be learning management systems including Moodle, WebCT and D2L, Facebook groups and asynchronous platforms such as blogs. When the trends and difficulties in the published works on online learning communities in teachers’ professional development were investigated, it can be said that using online learning communities to provide a constructive space for both collaborative learning and reflection on teaching, using an asynchronous space in addition to synchronous one, and getting support from peers if participants provide support were the trends.
Ortaokul Öğrencileri Kanıt Yapabilir mi?
Authors: YILMAZ Tuğba Yulet , KÖSE Nilüfer
Published: July 2021

Öğrencilerin muhakeme becerilerinin gelişiminin desteklemesi için küçük yaşlardan itibaren matematiksel kanıtla tanışmaları ve bu süreçteki eylemleri gerçekleştirmeleri oldukça gerekli ve önemli olmakla birlikte bu durum “küçük yaştaki öğrenciler kanıt yapabilir mi?” sorusunu akla getirmektedir. Bu soru doğrultusunda bu çalışmanın amacı ortaokul öğrencilerinin verilen problem ve önermeleri kanıtlama sürecindeki muhakemelerini incelemektir. Bu amaçla 2019-2020 eğitim öğretim yılında, bir devlet ortaokulunda öğrenim gören yedinci sınıf öğrencileri katılımcı olarak seçilmiştir. Nitel araştırma yaklaşımının benimsendiği bu çalışmada veriler açık uçlu görevler aracılığıyla toplanmıştır. Çalışma bulguları görevleri anlamayan öğrencilerin görevi yanıtsız bıraktıklarını, tekrar yazdıklarını, görevdeki verileri eksik, hatalı kullandıklarını ya da verilerin dışına çıktıklarını, bazen de görevdeki önermenin öncülünü anlamadıklarını ortaya koymuştur. Görevleri anlayan öğrencilerin muhakemeleri incelendiğinde, doğrudan kanıt yapmayı gerektiren sayı görevlerinde genel olarak deneysel doğrulama yaptıkları belirlenmiştir. Doğrudan kanıt yapmayı gerektiren geometri görevlerinde ise çoğunlukla bir dörtgenin kapsadığı dörtgeni aksine örnek vererek hatalı gerekçelendirme, prototip çizim üzerinde sembolle gerekçelendirme ya da hatalı çizime dayalı gerekçelendirme yaptıkları, bazı öğrencilerin ise tümdengelimsel muhakeme yaptığı belirlenmiştir. Aksine örnek vererek kanıt yapmaları gereken görevlerde bazı öğrencilerin ön bilgi eksikliğinden kaynaklı mantıksal olmayan gerekçelendirmeler yaptıkları, bununla birlikte pek çok öğrencinin tümdengelimsel muhakeme yaptığı görülmüştür. Bu çalışmada genel olarak öğrencilerin kanıtlama sürecinde argüman üretmede zorlandıkları, çoğunlukla özel durumlar kullanarak genelleme yapma eğiliminde oldukları ve önceki öğrenmelerini dönüşüm yapmadan kullandıkları söylenebilir.
Management of Information Communication Mechanism in Colleges and Universities — Based on the Perspective of WeChat Work Group
Authors:   SIAS University of Zhengzhou, Xinzheng, China, Chang Junhong
Published: July 2021

WeChat is a convenient means of information and communication nowadays, which can provide functions such as group chat, public platform, friends circle, and message spreading. WeChat group is widely used in the working environment of colleges and universities, greatly improving the communication efficiency as well as making up for the shortcomings of the formal communication mechanism, but it also causes problems like inefficiency and poor security of information management. A sound and efficient information and communication mechanism for organizations could be established by taking the formal communication network as the leading role and strengthening the management of WeChat group.
DOĞUMDA KORDON KANINDA KURŞUN VE KADMİYUM DÜZEYLERİ
Authors: Şimar Songül , Karahan Nazan
Published: July 2021

AMAÇ: Gebelikte kurşun ve kadmiyum maruziyeti anne ve bebek üzerinde olumsuz etkiler yaratır. Karabük ili demir çelik endüstrisinin merkezi olup, kurşun ve kadmiyum maruziyeti açısından riskli bir bölgedir. Bu araştırma doğumda kordon kanında kurşun (Pb) ve kadmiyum (Cd) düzeylerini belirlemek ve gebelerin maruziyetini değerlendirmek amacıyla yapılmıştır.GEREÇ VE YÖNTEM: Tanımlayıcı ve analitik tipte yapılan bu araştırma, 01 Şubat 2017 - 01 Mart 2017 tarihleri arasında Karabük’te gerçekleştirilmiştir. Araştırmanın örneklemi, duyma ve konuşma problemi bulunmayan, en az 1 yıldır Karabük ilinde ikamet eden ve araştırmaya katılmak için gönüllü 60 gebeden oluşmuştur. Araştırmada doğum sırasında göbek kordonu kesildikten hemen sonra, kordonun plasenta tarafında kalan kısmından steril enjektör aracılığıyla 3 ml kan örneği alınmıştır. Alınan numuneler etiketlendikten hemen sonra -20°C soğutucuda analize gidene kadar saklanmıştır. Kordon kanı numuneleri, AAS (Atomik Absorbsiyon Spektroskopisi) Grafit Sistem yöntemi kullanılarak analiz edilmiştir.BULGULAR: Araştırmada kadınların yaş ortalamalarının 29,01±5,12 olduğu, %43’ünün ilköğretim mezunu olduğu, %23,3’ünün çalıştığı, %11.7’sinin sigara içtiği, %73.3’ünün orta seviyede gelire sahip olduğu, %60’nın şehir merkezinde yaşadığı belirlenmiştir. Çalışmamızda kordon kanı kurşun düzeyinin ortalama 1,53±0,72 μg/dl ve kordon kanı kadmiyum düzeyinin ortalama 0,61±0,19μg/L olduğu belirlenmiştir. Araştırmada kordon kanı kurşun ve kadmiyum düzeyleri annenin yaşı, eğitim seviyesi, çalışma durumu, kronik hastalık varlığı, sigara içme durumu, kan grubu ve anemi varlığı açısından istatistiksel olarak anlamlı bir farklılık göstermemiştir (p>0,05). Bununla birlikte Rh faktörü (-) negatif olan gebelerde, kordon kanı kurşun düzeyi ( z=-2,083, p=0,037) ve kadmiyum düzeyi ( z=-2,083, p=0,037) istatistiksel olarak anlamlı derecede daha yüksektir.SONUÇ: Literatürden farklı olarak çalışmamızda kordon kanında kurşun ve kadmiyum düzeylerinin maternal RH faktörü ile ilişkili olabileceği sonucuna ulaşılmış olup, konu hakkında ileri çalışmalara gereksinim bulunmaktadır.
SYDENHAM KORESİ TANISI ALAN OLGULARIN NÖROLOJİK AÇIDAN DEĞERLENDİRİLMESİ
Authors: Çavuşoğlu Dilek , Pektas Ayhan
Published: July 2021

AMAÇ: Bu çalışmada Sydenham koresi tanısı alan çocukların nörolojik açıdan değerlendirilmesi amaçlanmıştır.GEREÇ VE YÖNTEM: Tanı alan hastalar retrospektif olarak taranıp demografik, klinik, laboratuar, nörogörüntüleme, ekokardiyografi (EKO), başvuru yakınmaları ve uygulanan tedaviye yanıtları bakımından değerlendirilmiştir.BULGULAR: Çalışmaya 10 olgu dahil edildi. Hastaların sekizi kız (%80), ikisi erkek (%20), kız/erkek oranı 4, ortalama tanı yaşı 12,05±2,84 yıl olarak saptandı. Başvuru anında olguların hepsinde (%100) kardit tesbit edildi. EKO incelemesinde altı olguda (%60) sadece mitral yetmezlik, dört olguda (%40) ise mitral yetmezlik ve aort yetmezliği mevcuttu. Başvuru yakınmaları açısından değerlendirildiğinde yedi olgu (%70) koreiform hareketler; bir olgu koreiform hareketler ve yürüyüş bozukluğu; bir olgu hemiparezi, dizartri ve koreiform hareketler ve bir olgu da emosyonel instabilite ve yürüyüş bozukluğu nedeniyle başvurdu. Jeneralize kore dört olguda (%40), hemikore altı olguda (%60) izlendi. Olguların dördünde sağ (% 66,6) ve ikisinde sol (%33,3) hemikore bulgusu saptandı. Hastaların tümüne valproat tedavisi (10-15 mg/kg/gün) başlandı. Tedavi ile koreiform hareketlerin kaybolma süresi 20-90 gün (ortalama 42,50±22,39 gün) arasında değişti. Hastaların hiç birinde yan etki gözlenmedi. Yalnızca bir hastanın ANA değeri pozitif olarak saptandı. Olguların sekizinin (%80) beyin manyetik rezonans görüntüleme (MRG) tetkiki normal olup iki olguda (%20) patoloji izlendi. Beyin MRG’de bir olguda periventriküler beyaz cevherde bir olguda ise bilateral frontal lob derin beyaz cevherde gliotik lezyonlar saptandı.SONUÇ: Tanıda nörolojik muayene önemli olmakla beraber hastaların koreiform hareketlerden önce davranışsal semptomlar ile de başvurabileceği akılda tutulmalıdır. Valproatın etkin ve güvenilir bir tedavi seçeneği olduğu ve beyin MRG’de görülen spesifik olmayan hiperintens lezyonların inflamasyon ve vaskulit mekanizmalarının sonucu ortaya çıktığı ileri sürülebilir.
Preparation and Characterization of Nanocrystalline Cellulose from Cladophora sp. Algae
Authors: Steven S. , Mardiyati Y. , Mar’atus Shoimah Silvia , Rizkiansyah Raden Reza , Puji Santosa Sigit , Suratman Rochim
Published: July 2021

Nanomaterial is one of the recent technological advancements that attracts the attention of many scientists. Many advanced properties could emerge from the utilization of materials on this scale. Nanocrystalline cellulose (NCC) is a cellulose-based nanomaterial currently gaining attention because of its remarkable properties. NCC was prepared by removing the amorphous part of cellulose through acid hydrolysis. Cladophora is a type of algae with a fiber-like body, that could grow rapidly and widely available in the Indonesian coastal area, which is considered a nuisance and has no known high economic value. Cladophora can be used as an alternative source of cellulose because it has a high amount of cellulose. Cellulose could be extracted from Cladophora using 17.5% of NaOH at 100°C, 1 M sulfuric acid hydrolysis at 100°C, and bleaching with 5% hydrogen peroxide at 100°C. Nanocrystalline cellulose could be extracted by sulfuric acid hydrolysis at 100°C, with a concentration of 2 M, 3 M, and 5 M. The duration of the process for each concentration, varied for 5, 10, and 15 hours. X-Ray Diffraction (XRD), Particle Size Analyzer (PSA), Transmission Electron Microscopy (TEM), and Fourier Transform Infrared (FTIR) spectroscopy were used to characterize the resulting hydrolyzed product. The result showed that the increase in acid concentration and processing duration increased the crystallinity while decreased particle length and cellulose diameter. The highest crystallinity and smallest particle size were 96.36% and 189.2 nm, obtained by acid hydrolysis in 5 M sulfuric acid for 15 hours.
Pliocene to Pleistocene Stratigraphy of Rembang Zone, North East Java Basin, Indonesia
Authors: Maryunani Khoiril Anwar , Kapid Rubiyanto , Djuhaeni - , Santoso Wahyu Dwijo , Irawan Dasapta Erwin
Published: July 2021

We studied benthic faunas and planktonic foraminiferas in seven stratigraphic sections in Rembang Zone to understand the paleoecology of the area. Rembang Zone is an interesting object for further examination especially during Plio-Pleistocene. That time fragment holds a very important information of ecological changes in Java Island. We observed the following sections: upper-part of Ledok fm, calcareous shales/marls of Mundu fm, glouconitic Globigerinid sands of Selorejo fm, and blue-green shales of Tambakromo Member of Lidah fm. We identified N21 sequence in the Late Pliocene, with a sequence boundary (SB-21) which is superimposed with irregular contact between marl of Mundu fm and Globigerinid sands of Selorejo fm. This irregular contact is interpreted as the base of an incised valley, which was generated by a falling sea-level event in Late Pliocene. We spot changes in biostratigraphy, paleobathymetry, and paleoclimate. There are three Pliocene biostragraphies in this section: Globorotalia margaritae zone (N19); Globorotalia miocenica zone (N20 - N21) and Globorotalia tosaensis tosaensis zone (the top of N21). Using cluster analysis with Past computer software, we describe the correlation between variation of foraminifera and environmental change and the bathymetry zone. We find paleoclimate changes by the presence of sub-tropical transitional faunas (Globorotalia tosaensis tosaensis) and the increasing of tropical fauna (Globorotalia truncatulinoides) in Plio-Pleistocene sediments.
Synthesis and Characterization of Nanoemulsion Andaliman Aroma Compound
Authors: Rienoviar - , Setyangingsih Dwi , Sudirman - , Kasim Fitriani
Published: July 2021

Andaliman is widely used in culinary and medicine for a long time ago. However, it has a short storage life, so it takes a preservation process. The study aims to create the synthesis of the Andaliman aroma compound and its characterization. The synthesis process is conducted with several variables such as oleoresin concentration range of 10 and 20 wt% and type of surfactants such as Tween 80, mixed of Tween 80:20 (50:50 wt%) and Tween 20. The homogeneous Maltodextrin solution and gum Arabic solution, called solution 1 and 2, are created by using ultra turrax with a speed of 18,000 rpm for 5 minutes. Then they are mixed with a comparative composition 2:3 as wall material. After that, the mixture is added by three different types of surfactants such as Tween 80, mixed Tween 80 and 20 (1:1), and Tween 20. Andaliman nanoemulsion is generated by mixing Andaliman oleoresin, wall materials, and water with two different compositions, such as 10:20:100 and 20:20:100 and also nine wt% of surfactants. Their treatment mixing is similar to the manufacture of wall materials. The characterization of nano emulsification was conducted by analyzing droplet size, zeta potential, polydispersity index (PDI), emulsion stability index (ESI), and viscosity. The study results showed that mixed 20 wt% oleoresin concentration and emulsifier of Tween 20 produced 100% of ESI value with a particle size of 68.5 nm and zeta potential of -44.95 in which showed the stability of both emulsion and nanometer-sized particle.
The ICT Usage in Delivering Integrated Social Welfare Services
Authors: Kardeti Denti , Gunawan Budhi , Rusyidi Binahayati , Prasetiyani Netty
Published: July 2021

Fragmented social welfare services provided by the Indonesian government have resulted in unfortunate communities' difficulties, the rightful beneficiaries in accessing social aids. In response to this issue, the government established the Integrated Referrals and Services System (SLRT), covering education, health, and socio-economic services under ‘one-roof’ management. As discussed in the literature, either looking at the vertical or horizontal aspects of integration can be achieved. In this article, a mixed-method approach was used to evaluate the implementation of the SLRT in Bandung District by focusing on horizontal integration, exploring the perception of beneficiaries and operators. SLRT has equipped itself with an online system named Information System of Social Welfare for the Next Generation (SIKS-NG) to improve the quality of the services further. The use of SIKS-NG can accelerate data distribution from the region to the center; data is always updated and targeted according to the service provider's needs. This study further unravels the implementation of the online system and its impacts on the SLRT. In general, it is found that the perceptions of beneficiaries and operators are in favor of SLRT. On the other hand, SIKS-NG has also been proven to improve the services delivered by operators. However, some areas of improvement were also identified for the system to be sustainable in the future.
Initial Stage in Designing Household Constructed Wetlands: Selection of a Suitable Aquatic Plant
Authors: Qomariyah Siti , Ramelan Ari Handono , Setyono Prabang , Sobriyah -
Published: July 2021

Constructing centralized wastewater treatment plant systems to serve and control city sanitation requirements is vastly expensive in developing countries. Consequently, employing decentralized wastewater treatment systems through utilizing constructed wetlands (CWs) for individual households should be promoted. In this study, the most appropriate aquatic species planted in constructed wetlands were examined for treating greywater at the household level in humid tropical regions. Three different decorative aquatic plants (i.e., Echinodorus palaefolius, Typha latifolia, and Cyperus alternifolius) were compared based on their performances. Also, three similar wetlands having a total working volume of 158.42 liters with a gravel sand filter were used in this study. One day, a period was allocated for the hydraulic retention time (HRT), which corresponds to the applied hydraulic loading rate of 115.5- and 150.5-mm d-1 for the first and second experiments, respectively. The high percentage removal of 5-day biological oxygen demand (BOD5), along with an aesthetic green view and minimum maintenance of decorative plants, was employed as the selection criteria. In- situ measurements were also undertaken for pH, temperature, and total dissolved solids. The findings indicate that the most significant BOD5 removal was with the Cyperus alternifolius plants, which showed a very high BOD5 removal rate (91.18%). The Cyperus alternifolus species were more resistant in full direct sunlight conditions and adaptable to grow in temporarily or fully submerged conditions. These results, therefore, suggest that Cyperus alternifolius is the most suitable plant species for the treatment of greywater in household CWs in the tropics.
Acceptance Ratio Analysis: An Early Fault Indicator for Grid-Connected Photovoltaic System
Authors: Shukor Fatin Azirah Mohd. , Zainuddin Hedzlin , Muhammad Nurmalessa , Khir Farah Liyana Muhammad
Published: July 2021

This paper presents the Acceptance Ratio (AR) analysis for three different grid-connected photovoltaic (GCPV) systems working under the Malaysia tropical climate. AR is a ratio between actual AC power, PAC_actual, and predicted AC power, PAC_predicted. According to Malaysian Standard MS2692:2020,the AR value must â‰¥ 0.9 to classify as accepted in testing and commissioning test. In contrast, a rate < 0.9 indicates a non-accepted GCPV system.  Historical data of the AC power output, solar irradiance, and module temperature from January 1 to December 31, 2019, were used for the analysis. The analysis procedure was carried out using Matlab and Microsoft Excel software. The analysis covers the AC power analysis and the AR analysis based on the threshold of 0.9. The plotted monthly AC power graph shows that all systems have lower than 15 % differences between actual and predicted AC power. On the AR analysis, System 1 was found to show early fault indicator with a monthly cumulative percentage of AR < 0.9 ranges from 34 % to 71 %, meanwhile System 2 and System 3 have a lower cumulative percentage of AR < 0.9 ranges from 5 % to 19 %. This result suggested that only System 2 and 3 are fault-free GCPV systems and working in good condition. The outcome of this study has succeeded in providing preliminary AR analysis results for three GCPV systems located in Malaysia. This study would help to evaluate AR threshold reliability to indicate an early fault of a GCPV system.
Skin Lesion Detection and Classification Using Convolutional Neural Network for Deep Feature Extraction and Support Vector Machine
Authors: Yanchatuña Oscar P. , Pereira Jackeline P. , Pila Kevin O. , Vásquez Paola A. , Veintimilla Keiko S. , Villalba-Meneses Gandhi F. , Alvarado-Cando Omar , Almeida-Galárraga Diego
Published: July 2021

Pigmented skin lesion identification is essential for detecting harmful pathologies related to this large organ, especially cancer. An analysis of the different methods and projects developed to diagnose these illnesses throughout the years showed that they had become very useful tools to identify melanoma, dermatofibroma, and basal cell carcinoma, among other types of cancer, are seen through the use of new computer-aided technologies. The most common diagnosis is based on dermoscopy and the dermatologist expertise that can improve accuracy with image detection techniques and classification by computer. Therefore, this study aims to develop software models able to detect and classify skin cancer. The following work is based on the use of dermoscopy images obtained from the HAM10000 dataset, a database with 10000 images previously tested and validated for research use. The main process is divided into three relevant parts: image segmentation, feature extraction (FE) using ten different pre-trained Convolutional Neural Networks (CNNs), and Support Vector Machine (SVM) to establish a classification model. According to the results, the models of classification performed very well using the image segmentation step, showing average accuracies between 80.67% (Xception) and 90% (Alexnet). In contrast to the process without using image segmentation, where no method reached 60%. AlexNet plus SVM model showed the minor running time and presented the higher accuracy rate (90.34%) for the correct identification and classification of the seven categories of cutaneous lesions taken into account.
Analysis of Waiting Time Using Three Mixtures Exponential Distribution
Authors: Hasanain Wafaa Sayyid , Elaibi Waleed Mohammed
Published: July 2021

Mixed exponential distributions play a significant role in lifetime data analysis, but if we use traditional statistical methods to estimate the parameters in the model, it will be very difficult. However, we employed the Expectation-Maximization (EM) algorithm to estimate the parameters of the model. It will simplify the complexity of the calculation. This paper studies the parameter estimation problem in a complete data situation and gives Monte Carlo (MC) simulation. The EM algorithm is good to estimate the parameters for the three mixed exponential distributions. The parameters estimating were remarkably close to the real values; simultaneously, the samples' RMSE values are more and smaller along with the increase of the sample size so that the method can be regarded as a kind of very effective statistical analysis calculation method. Results show that the algorithm based on EM to estimate the parameters of the mixed exponential distribution is remarkably effective. An application was made at the three phases waiting time in the Rasheed Bank in AL-Mustansiriyah University. The results showed that the estimating mean waiting time by EM algorithm for then the audit stage phase has the biggest proportional in this process which has formed (48%) from total mixture distribution component with scale parameter (0.46 hours), then the provide information phase (32%) with scale parameter (0.44 hours), then the stage of the cashier (20%) with mean waiting time (0.32 hours).
Local Freshwater Fish Recognition Using Different CNN Architectures with Transfer Learning
Authors: Majumder Anup , Rajbongshi Aditya , Rahman Md. Mahbubur , Biswas Al Amin
Published: July 2021

Bangladesh has its profusion of water resources, but due to environmental issues and some other significant causes, the quantity of water resources is lessening continuously. As a result, many of our local freshwater fishes are being abolished, leading to a lack of knowledge about freshwater fish among the new generation of people in Bangladesh. It is also very difficult to recognize freshwater fish because of their nature, color, shape, and structure. To recognize the local freshwater fish efficiently, transfer learning can be used, one of the significant parts of deep learning that concentrates on storing knowledge gained while solving one problem and employing it to a distinct but related problem. This paper has used six CNN-based architecture with transfer learning, namely DenseNet201, InceptionResnetV2, InceptionV3, ResNet50, ResNet152V2, and Xception. A total of seven freshwater fish image data is used here, which is collected from the various local fish markets of Bangladesh. To check the effectiveness of the working approach, we have calculated the accuracy, precision, Recall, and F1-Score. The approach InceptionResnetV2 and Xception achieved the highest accuracy with 98.81% over the other approach which is a very significant result.
Carbon Storage on Different Species of Seagrass on Tourist Destination Areas: A Measure of Disturbed and Undisturbed Environments
Authors: Watiniasih Ni Luh , Nuarsa I Wayan , Merdana I Made , Dharma Agus , Antara I Nyoman Gde , Budiarsa I Nyoman
Published: July 2021

Carbon absorption and storage, known as carbon sequestration, have reduced global warming through photosynthesis. Seagrass beds in coastal ecosystems have high plant productivity and are found to have the ability to reduce the effect of global warming due to the increase of CO2 in the atmosphere. Due to the anthropogenic effect, decreasing environmental quality, such as tourism, may affect seagrass diversity and growth, therefore its carbon contents. This study investigates the ability of seagrass species as carbon storage and their diversity in a common tourist destination area referred to as disturbed habitat, located at Sanur and an area that is less disturbed, referred to as undisturbed habitat. Samples were collected from 3 transects 50m in length that were placed on each site. Three plots, each measuring 0.5 x 0.5 m, were employed on each transect. The number of individuals of each species and the percent plant coverage were measured on each plot. Plant biomass and carbon content were extracted in the Lab and divided into below- and above-ground. The result shows that eight species were found at Sanur and only four from Samuh sites. On average, the percentage of plant coverage was higher at the Samuh site. Samuh site. The plant biomass and carbon storage were lower at Samuh than at the Sanur site. Species differences from each site affect the plant biomass, so the carbon content. Anthropogenic activities are not the only ones to determine the carbon storage of seagrass, but rather the species morphology.
Seismic Hazard Zonation in Gedebage Future Development in Bandung City Using HVSR Inversion
Authors: Rohaendi Nendi , Robiana Rahayu , Sukiyah Emi , Muslim Dicky , Cipta Athanasius
Published: July 2021

Greater Bandung, the largest economic growth corridor in Indonesia after Jabodetabek, is sitting on the Bandung basin. This deep sedimentary basin is situated just 12 km south of the active Lembang fault. Gedebage is an area intended to be the new economic and business center located in the easternmost of Bandung. The research aims to identify the vulnerability of Gedebage area against seismic ground motions. The area's morphology is dominated by a flat area with 0 - 8% of slope and predominantly composed of an old lake deposit. Topography, including basement morphology, sediment thickness, and physical properties, plays a great role in escalating/de-escalating seismic ground motions. A specific morphology may trap and prolong seismic shaking. Furthermore, stiffness and bedrock depth are instrumental in passing the spectral ground motions to the surface. The HVSR inversion method is applied to map subsurface conditions that successfully applied in Palu and its surrounding area. The research shows that Gedebage areas are vulnerable to the seismic hazard, referring to the shear wave velocity (Vs30) distribution and seismic hazard micro zonation maps. The discussion of the research findings is useful for future infrastructure development in the research area. The area is categorized as soft soil and medium soil classes, and it has a high vulnerability for destruction if there is an earthquake. The area should be cleared from vital infrastructures such as government buildings, schools, or hospitals.
[RETRACTED] An Approach to Optimize the Design of Ultrasonic Transducer for Food Dehydration
Authors: Nguyen Hay , Nguyen Ngoc-Phuong , Nguyen Xuan-Quang , Le Anh-Duc
Published: July 2021

==========================================================Available online: 30 June 2021This article has been retracted by International Journal on Advanced Science, Engineering and Information Technology Editorial team, following clear correspondence and confirmation with authors.The article contained redundant material, the editor investigated and found that the paper published in Computational Intelligence Methods for Green Technology and Sustainable Development. GTSD 2020. Advances in Intelligent Systems and Computing, vol 1284. Springer, Cham. DOI: https://doi.org/10.1007/978-3-030-62324-1_35,  URL: https://link.springer.com/chapter/10.1007/978-3-030-62324-1_35, entitled "An Approach to Optimize the Design of Ultrasonic Transducer for Food Dehydration".The paper is retracted from 30 November 2021.==========================================================Ultrasound-assisted air-drying is considered a useful method to reduce drying time and ensure some agricultural food products' quality. In this study, a practical design method of an Ultrasonic Transducer (UT), which is in the form of a circular stepped-plate, was developed by using Particle Swarm Optimization (PSO) algorithm and Finite Element Analysis (FEA). The numerical calculation is carried out for two different geometric dimensions of the stepped-plate. Based on the obtained results, the smaller UT dimensions were chosen, and its prototypes were fabricated. The prototype's measured resonance frequency is 19.927 kHz compared to calculations getting an error of 0.073 kHz (0.37%). Also, to evaluate the effects of ultrasound on a drying process, the UT is integrated into a heat-pump drying machine for drying foods. The experiments were carried out on Codonopsis javanica using heat-pump drying method at air temperature 45 ± 0.5 °C, air humidity 18-20 %, air velocity 0.5 ± 0.1 m/s with and without ultrasonic intensity while keeping all other conditions and parameters constant. The results showed that the total drying time was reduced in the range of 25% to 42% depending on ultrasonic intensity, compared to heat-pump drying without ultrasonic intensity. The color of the dried products is also considered to testify the quality of the product when using UT in drying processes. The obtained results prove the effectiveness of the proposed approach in design of the UT for food dehydration.