bluuebunny/crossref_metadata_2025 huggingface dataset:
[E]etnomatemáticaS: uma discussão acerca do nomadismo
Authors: Paulucci Eric Machado , Osorio Carolina Tamayo
Published: April 2021

Das inquietações a respeito dos essencialismos pressupostos pela pergunta “o que é Etnomatemática?” surge uma pesquisa que propõe discutir os limites de uma área e sua relação com dois conceitos da filosofia de Gilles Deleuze e Félix Guattari: ciência nômade e ciência régia. Para isso, deslocamos a pergunta “o que é” para “o que pode”, atravessando seis investigações dos anos de 2017 a 2020, a fim de descrever traços de possibilidades para etnomatemáticaS múltiplas, decoloniais e não disciplinares, produzidas pelos afetos, desejos, acontecimentos, temporalidades e territórios de cada pesquisa-experiência. Dispondo a desterritorialização de um espaço constantemente fronteiriço, busca-se destacar algumas investigações que escapam para uma região nômade, para pensar as etnomatemáticaS não como algo fixo e pré-estabelecido, mas como um movimento de invenção e produção de sentidos.
Pelatihan Pengembangan Media Pembelajaran pada Guru MI Al Muhammady Mentoro Kecamatan Sumobito
Authors: Susanti Aria Indah , Aflaha Dwi Sari Ida , Taufik Imam
Published: April 2021

Kegiatan pengabdian masyarakat yang berjudul Pelatihan Pengembangan Media Pembelajaran untuk Meningkatkan Wawasan dan Kompetensi Guru di MI Al Muhammady Mentoro Kecamatan Sumobito Kabupaten Jombang merupakan kegiatan yang dilakukan dosen Fakultas Teknik Universitas Kahuripan Kediri dengan Madrasah Ibtidaiyah Al Muhammady Mentoro Kecamatan Sumobito Kabupaten Jombang. Kegiatan pengabdian masyarakat ini bertujuan untuk memberikan wawasan terhadap para guru tentang beberapa aplikasi offline dan online yang dapat digunakan sebagai variasi media pembelajaran agar dapat meningkatkan minat dan motivasi belajar khususnya di masa pandemi Covid-19. Pada masa pandemi Covid-19, sebagia besar bahkan hampir seluruh sekolah melaksanakan pembelajaran dari rumah. Sehingga guru-guru harus kreatif dan inovatif dalam melakansakan pembelajaran dan menyediakan media pembelajaran agar siswa dapat tetap belajar secara aktif walaupun dari rumah. Metode pelaksanaan dari kegiatan ini adalah pelatihan. Pelatihan dilaksanakan dengan memberikan/menjelaskan materi dan melakukan kegiatan praktik secara langsung. Seorang dosen memberikan materi, sedangkan dosen lainnya akan mendampingi para guru agar tidak mengalami kesulitan. Pelatihan pengembangan media pembelajaran sebagai salah satu upaya untuk membantu para guru dalam meningkatkan wawasan dan kompetensi.
Fréchet vector subdifferential calculus
Authors: ALI TRUONG QUANG
Published: April 2021

In this paper, we study Fréchet vector subdifferentials of vector-valued functions in normed spaces which reduceto the known ones of extended-real-valued functions. We establish relations between two kinds of Fréchet vectorsubdifferentials and between subdifferential and coderivative; some of them improve the existing relations forextended-real-valued functions. Finally, sum and chain rules among others for Fréchet subdifferentials of vector-valued functions are formulated and verified. Many examples are provided
Weak sharpness for solutions of nonsmooth variational inequalities and applications
Authors: NGUYEN LUONG V. , QIN XIAOLONG
Published: April 2021

In this paper, we first give some new characterizations of weak sharpness of the solution set of nonsmoothvariational inequalities in terms of partial subdiferentials/Gˆateaux derivatives of involving bifunctions. Asapplications, we use a new characterization to establish sufficient conditions for guaranteeing finite terminationof an arbitrary algorithm solving nonsmooth variational inequalities under the weak sharpness assumption
ANALISIS PERBANDINGAN PENGARUH MOTIVASI EKSTRINSIK TERHADAP PRODUKTIVITAS DOSEN PERGURUAN TINGGI A DAN B DI MALANG
Authors: Sarbini Sarbini
Published: April 2021

Tri Dharma perguruan tinggi merupakan tugas dan kewajiban sebagai dosen. Kinerja dosen dalam menyelesaikan tugas tridharmanya dapat dipakai sebagai acuan dosen dalam meningkatkan produktifitasnya sehingga kwalitas dosen, kualitas lulusan dan kwalitas keilmuannya meningkat. Motivasi intrinsic dan ekstrinsik akan memaco dosen dalam menuntaskan kewajibannya. Motivasi ekstrinsik adalah motivasi yang dibentuk oleh perguruan tinggi untuk memacu produktifitas dosen. Penelitian membandingkan fasilitas motivasi ekstrinsik dua (2) perguruan tinggi swasta yang kemampuan finansialnya berbeda. Perbedaan fasilitas motivasi ekstrinsik akan mempengaruhi produktifitas dosen. Hasil penetian menunjukan motivasi ekstrinsik dan produktifitas pada dosen PT A lebih tinggi dari motivasi ekstrinsik dan produktifitas PT B. Sedang pengaruh motivasi ekstrinsik dosen PT A dan PT B tidak secara signifikan mempengaruhi produktifitas dosen pada kedua perguruan tinggi tersebut, namun motivasi ekstrinsik dosen PT A masih positif namun lemah atau tidak secara signifikan mempengruhi produktifitas dosen. Pengaruh motivasi ekstrinsik dosen terhadap produktifitas kerja dosen berbeda dengan pengaruh motivasi ekstrinsik terhadap produktifitas pada karyawan swasta selain profesi dosen.
Cotton Fibers in Acrylic Facial Epithesis - a Thermal Analyze During Heat Exposure
Authors: Pricop Marius , Talpos Serban , Pricop Cristiana , Urechescu Horatiu , Szuhanek Camelia , Mateas Marius
Published: April 2021

Heat cured polymethylmethacrylate (PMMA) has been used as denture bases since 1937. PMMA is a vinyl polymer, made by free radical vinyl polymerization from the monomer methyl methacrylate [1]. After the success of using as prosthetic material in the mouth, PMMA began to be used in other areas, for example in facial prosthetics, for facial epitheses. The facial epitheses are exposed permanently to ambiental changes (temperature, air currents, humidity). Secondary, for a better esthetic effect, in facial epitheses PMMA often contain variables quantities of natural fibers (cotton, wool). Our study has analyzed how a PMMA facial epithesis reacts to temperature changes during heat exposure in the summer, especially depending on the amount of fiber it contains, considering that the biological interface between the prosthesis and facial tissues is sensitive to heat [2].
Applications of the Poly(methyl methacrilate) (PMMA) in Cranioplasty
Authors: Toader Corneliu , Nastase Cristian , Marinescu Michal , Boghi David Matteo
Published: April 2021

Cranioplasty is a surgical procedure that is used to correct any defect in skull bones after a previous decompresive craniectomy, usually made for traumatic brain injuries, with ischemic or hemorragic nature, or after a tumor removal. A composite for modeling on a defect in skull bones was prepared by crosslinking poly(methyl methacrylate) in the presence of barium sulfate. The crosslinking rate of methyl polymethacrylate in the presence of the benzoyl peroxide initiator, the N, N-dimethyl-β-toluidine polymerization accelerator and the hydroquinone polymerization inhibitor allows modeling according to the location and size of the defect. Thus, the concentration of composite precursor components was optimal for this purpose. The TGA diagram shows the almost total consumption of methyl methacrylate and butyl methacrylate monomers in the crosslinking process of methyl polymethacrylate with the formation of the composite. This technical study demonstrate the efficacy of this treatment, as well as to show all the possible scenarios in such procedures.
Attempts to Diminish the Drawbacks of Polylactic Acid Designed for 3D/4D Printing Technology-Fused Deposition Modeling
Authors: Dimonie Doina , Dragomir Nicoleta , Stoica Rusandica
Published: April 2021

In order to improve thermal behavior and dimensional strability of polylactic acid (PLA) designed both for 3D and 4D printing technology-fused deposition modeling (FDM) using a scalable procedure, the polymer was melt compounded with additives which control the morphology by crystallization and/or reinforcing. Using the formulations which provide polylactic acid (PLA) improved thermo-mechanical properties and desired dimensional stability, the new materials were shaped, on a laboratory line, as filaments for printing technology. The selected compounds were than scaled up on a 50 kg/h compounding line into granules which prove to have good shapability as filaments for printing technology (1.85 +/- 0.05 mm diameter, required ovality, good appearance and smooth surface) and performed properly at 3D printing. The obtained results proved that functional properties of PLA can be improved by various methods so that, depending on the reached performances, the new material can be converted through printing technology into items for performance applications. The novelty of the article is related to the fact that it identifies a modifying solution for controlling the morphology of a type of PLA designed for 3D printing that already has an advanced crystallinity.
Experimental Study on Graphene Coating Thermosetting Epoxy Polymer for the Manufacture of Electronic Circuit Boards
Authors: Arunachalam Balajik Rishna Bharathi , Br Ramesh Bapu , Duraivelu jayabalakrishnan
Published: April 2021

Graphene is a microstructure of graphite that has enormous properties and is also one of the carbon allotropes. There are several metals with low strength. The properties of these metals can be increased by coating the graphene. The primary goal of the work is to create composite graphene that exhibits the optimised properties and characteristics that meet the requirements of the industries. The properties of graphene when coated with other metals are studied and their applications in different industrial fields are analysed through several tests and experiments. Research-based on graphene coatings and composites is studied and the properties are adapted.
Friction Behavior of 3D-printed Polymeric Materials Used in Sliding Systems
Authors: Chisiu Georgiana , Stoica Nicolae-Alexandru , Stoica Alina-Maria
Published: April 2021

Recently, 3D-printed polymeric materials have been successfully replacing the usual ones especially used in sliding systems like couplings. Among the polymeric materials, Acrylonitrile Butadiene Styrene (ABS) and Poly Lactic Acid (PLA) can be the competitive materials in such application after 3D-printing. In this study, 3D printing was used to produce samples from ABS and PLA via fused deposition modelling (FDM) technology. Then friction behavior of 3D-printed samples was investigated depending on printing orientation of the samples. Ultra High Molecular Polyethylene Weight (UHMWPE), as a well-known industrial polymer, was also used for comparing the friction behavior of 3D-printed ABS and PLA polymers. Friction tests were conducted using a pin-on-plate type tribometer according to ASTM G133 under different applied loads and sliding speeds at room temperature. It was found that printing orientation of all ABS and PLA samples has a considerable effect on their friction behavior. Transverse direction (T.D) of the 3D-printed samples shows higher coefficient of friction (COF) values than the longitudinal direction under all applied loads and sliding speeds. On the other hand, COF values obtained in both 3D-printed samples increase as the load and speed increase regardless of the printing direction. When both 3D-printed materials are compared, PLA samples exhibit lower COF values than ABS samples in both printing directions and under all loads and speeds. However, the UHMWPE sample produced with traditional method shows much lower COF values and stable change in friction behavior under all conditions compared to 3D-printed PLA and ABS samples.
The Effect of Arabian Coffee, Black Tea and Orange-juice on Microhardness and Color Stability of Hybrid Composite Resins. An in vitro Study
Authors: Al-Qarni Mohammed A. , Das Gotam , Saquib Shahabe , Sibghatullah Muhammad , Alahmari Manea Musa , Arora Suraj
Published: April 2021

The main aim of the present in-vitro study is to assess the effect of daily consumable drinks on the aesthetics of the dental composite resin materials. Sixty-four microhybrid and nanohybrid direct composite resin (3M Filtek Z350 XT Universal Restorative, Filtek Bulk Fill Flowable Restorative, USA) block samples were made with a dimension of 15mm X 2mm and are allocated into four groups. Each sample was immersed in test media such as Arabic coffee, black tea, orange-juice and distilled water as control group at room temperature for 15 days (n = 16). The color stability and microhardness measurements were taken at pre-immersion and after two weeks of immersion in test media. These parameters were assessed by electro spectrophotometerusing the CIE (Commission Internationale de l'Eclairage) system and Vickers microhardness indenter respectively. Each group was immersed in its test media for the complete duration of the study. On completion of 15 days, the samples were blot dried out with absorbent paper and microhardness dimensions and color stability measures were performed. The collected data was subjected to statistical analysis to formulate the results. Significant discoloration was observed with the Arabic coffee, black tea and orange-juice compared with control group. The Arabic coffee caused most significant discoloration followed by black tea and orange-juice. Although the highest values of microhardness was noted in the Arabic coffee followed by black tea and orange juice, whereas the lowest values were noted in the control. The color stability and microhardness of the composite resin restorations is affected by the everyday drinks that are consumed, from some more than others. Some of the everyday drinks affect the color stability and microhardness of the composite resin restorations more than the others.
Influence of Alumina Nanoparticles on the Mechanical Properties of a Bioresin Composite
Authors: Earar Kamel , Grigore Camelia Ana , Stefanescu Victorita , Fotea Silvia , Beznea Adrian , Berbece Sorin , Bratu Ana Magdalena , Dinu Ciprian Adrian , Maris Marius , Gurau Gabriela , Topor Gabi , Onisor Cristian , Scutariu Mihaela Monica , Feier Ramona
Published: April 2021

The aim of this study is to characterize (wettability, surface roughness and gloss) and test (microhardness and diametral compression) four types of light-cured composite resins, one of which is commercial. The first lab-made composite is the reference, obtained by mechanical mixing of three monomers, in equal concentrations. The following two lab-made materials can be considered nanocomposites because they were mechanically mixed in the base solution (Bis-GMA/TEGDMA/Bis-EMA) with α-Al2O3 nanopowders, with a concentration of 5 wt.% for one solution and 10 wt.% for the other. The benchmark material comparison for these lab-made composite and nanocomposite resins is the bioresin system, Filtek Supreme Ultra Universal Restorative. Results were promising, especially for the 10 wt.% Al2O3/Bis-GMA/TEGDMA/Bis-EMA system, characterized by mechanical improvment in comparison with the reference composite.
Secure and Guarantee QoS in a Video Sequence: a New Approach Based on TLS Protocol to Secure Data and RTP to Ensure Real-time Exchanges
Authors: Touil Hamza , El Akkad Nabil , Satori Khalid
Published: April 2021

The continued development of networks has significantly contributed to increasing the quantity of information available to replace old intelligence-gathering methods faster and more efficiently. For this, it is necessary to implement services that meet the consumers' requirements and measure precisely the factors that can generate obstacles to any communication, among these causes we can cite strong security and high quality of services. In this work, we implement a secure approach useful in continuous communications in a time axis (video sequence, VOIP call...), the process consists in establishing a well-secured connection between two interlocutors (the server that broadcasts the video sequence and a client) using an AES encryption key of size 256. A step of jitter check (latency variation) periodically is essential for the customer in order to make a decision: If the jitter is within the standards (compared to the tolerable value), we continue to encrypt with the AES256 key, if no, both ends must go through an automatic and uninterrupted fast renegotiation of the video to switch to a small AES key (192,128) to reduce the bandwidth on the channel, this operation must be repeated in an alternative way until the end of the communication.
Effect of Core Stabilization Exercises on Balance Performance in Older Adults
Authors: Ponde Ketki , Agrawal Ronika , Khalil Chikte Nazneen
Published: April 2021

Objective: Fall is defined as unintentional loss of balance that leads to failure of postural stability. Around30% of older adults aged over 65 years have an episode of falls each year.. All postural control componentsundergo changes with ageing. Any impairment in neuromuscular, central nervous system and sensorysystem leads to fall. So the aim of present study was to determine the effects of Core stabilization exerciseson balance performance in older adults. Methodology: Sixty participants both males and females agedbetween 65 -75 years were divided into 2 groups, Experimental and Control group (n=30). Experimentalgroup performed core stabilization exercises 5 times a week for 6 weeks, while control group carried ontheir routine daily activity for 6 weeks. Berg Balance Scale (BBS), Y-Balance Test, Functional Reach Testwere assessed at the baseline and after 6 weeks of intervention. Results: Statistical analysis revealed thatExperimental group showed significant improvement in BBS, Y – Balance Test and Functional Reach Testscores with (p ? 0.05) post 6 weeks of intervention. Control group showed no significant improvement inthe scores. Conclusion: Core stabilization exercises had significant improvement on balance variables inexperimental group when compared to control group.
Evaluation of Quality of Life in Diabetic Population with and without Diabetic Polyneuropathy
Authors: Abraham M Manoj , Sudan S Hari Hara , V Pavithra
Published: April 2021

Background: Diabetes is a chronic, metabolic disease characterized by elevated levels of blood glucose, whichleads over time to serious damage to the heart, blood vessels, eyes, kidneys and nerves. The complicationsof the Diabetes such as Diabetic Poly Neuropathy impacts the patient’s Quality of Life, later may result inearly death.Methods: A total of 260 samples were taken and divided into 3 groups, Diabetes with DPN (G1), IsolatedDM (G2), and Controls (G3) with 65, 65 and 130 samples respectively. They were assessed for Qualityof Life with WHOQOL-BREF Questionnaire. Data were collected and taken for analysis. The overallWHOQOL-BREF scores of the three groups were 83.86 ±5.93, 92 ±6.75 and 98.33 ±0.94 respectively.There was a significant statistical difference in WHOQOL-BREF in G1, G2 and G3 (p=0.000), but therewas no significant statistical difference in WHOQOL-BREF in between G2 and G3 (p=0.847) in domain 2.Conclusion: The findings in this study showed that the Quality of Life is reduced in patients with Diabetesmellitus with and without Diabetic Poly Neuropathy when compared with Controls without any metabolicdisorders including Diabetes and without any types of associated Poly Neuropathy.
Association of XmnI Polymorphism with Fetal Hemoglobin Level in Sudanese Patients with Sickle Cell Disease
Authors: Tarig Osman Khalafallah Ahmed  , Abeer Alshazaly Abdulrahman Altag  , Ahmed Abdalla Agab Eldour  , Anass M. Abbas  , Asaad Ma.Babker
Published: April 2021

Background: Sickle cell disease (SCD) is an inherited blood disorder that affects red blood cells. The studyof various modulating factors, and genetic factors affecting the clinical severity of the SCD is an interestingresearch focus especially in communities with a distinct genetic background. The XmnI polymorphism isa common genetic variation that was reported in previous studies to increase fetal hemoglobin (HbF) level.This was a descriptive cross-sectional study, conducted in El-Obeid city in Northern Kordofan state, westernSudan, during the period from August to November 2016. The Xmn1 polymorphic site was determined bypolymerase chain reaction. Data was analyzed using SPSS software program version 20. P-value of 0.05and below was considered of significance. In present study HbF level among normal individuals AA , shownsignificant difference (p<0.05) between presence of Xmnl +/+ and absence of Xmnl -/- site. in patients withSS , the HbF level was higher in those who had one or two Xmnl sites as compared to those with the siteabsent . In patients with sickle cell trait AS and AA, only the presence of the one and two Xmnl site (+/+)compared to the absence of the site (-/-) was associated with significant increase in the HbF level. There isa close link between the Xmn1 polymorphism site and HbF level. A wide range of HbF level was obtainedboth in the present and absence of this site. Further studies with a large sample size as well as analysis BShaplotypes among the patient with sickle cell anemia population are needed for better understand of possibleassociation .
Knowledge Regarding Osteoporosis among Young Adult Women of a Selected Community of Pokhara, Kaski
Authors: Deepti KC , Bindu Thapa , Sunita Gurung , Sharmila Poudel
Published: April 2021

Background: Osteoporosis is a silent killer disease that is highly prevalent among females. Even though thesymptoms of osteoporosis can be identified in later stages of life, it can be prevented with a healthy lifestyleadaptation at an early stage of life.Objectives: The present study aims to assess the knowledge level of osteoporosis among young adultfemales and examine the association between knowledge level and selected socio-demographic variables.Methodology: A quantitative descriptive cross-sectional study design was used. A non-probability purposivesampling technique was used to select 153 samples. The data were collected for 6 weeks using a semistructuredinterview schedule. Osteoporosis Knowledge assessment tool (OKAT) was used to collect thedata. Descriptive statistics (frequency, percentage, mean, standard deviation) was used for quantitative dataanalysis and inferential statistics (chi-square) were used to find out the association between knowledge leveland selected socio-demographic characteristics of the respondents.Results: The study concluded that 51 percent of the young adult women had an average level of knowledgeand 49 percent had a poor level of knowledge regarding osteoporosis. However, none of them had a goodlevel of knowledge regarding osteoporosis. A significant association was found between the knowledge leveland educational status of the respondents (p=0.002).
Association Between Hypertension and ABO Blood Groups: A Prospective Study among Students
Authors: Kumar Jha Pawan , Narayan Jha Harsh , Pathak Arun
Published: April 2021

Background: High blood pressure (BP) is a major public health problem in India and its prevalence israpidly increasing among both urban and rural populations. Age, gender, genetic factors and ethnicity arenon-modifiable risk factors of hypertension. The ABO blood group is inherently heritable, geneticallydetected at time of conception and becomes permanent for whole life. This study intends to find out anyeffect of different blood groups on development of hypertension.Method : A total of 172 subjects were studied between March 2017 to June 2018. Blood pressure of all theparticipants in the study was recorded using mercury sphygmomanometer. The formula, weight in kg wasdivided by height in meter square was used to calculate the BMI of patients and unit is kg/m2. The datacollected was compiled and analysed using chi-square test. SPSS ver. 16 was used for this. P value of <0.005was considered highly significant.Conclusion: Blood group B has the highest tendency to be obese and developed both prehypertension andhypertension. Whereas blood group AB has least chance to develop hypertension and obesity.
A Study of Incidence of Pre-Eclampsia in Relation to Maternal Age
Authors: Dhar Ranjana
Published: April 2021

Background: - Pre-eclampsia is a serious complication of pregnancy and contributes significantly maternalas well as perinatal morbidity and mortality. So this study is done to find if there exists any relationshipbetween maternal age and pre-eclampsia.Aim:- To study what age group is more prone to development of pre-eclampsia in normal pregnancies.Methodology:- 400 pre-eclamptic women in age group 18-42 years were included in the study. Cases aredivided according to different age group.Result:- Higher incidence of pre-eclampsia was observed in the age group 18-26 years followed by 35-42years.Discussion:- Age is found to be related to pre-eclampsia.Conclusion:- From this study, this can be concluded that age less than 25 years and age greater than 35 yearsare more prone to development of pre-eclampsia.
Navicular Position in Plantar Fasciitis: A Cross Sectional Study
Authors: Mohandas Leah , M. J. Pais Sudeep
Published: April 2021

Background: The foot is a complex structure with multiple functions like weight bearing, propulsion andshock absorption. Plantar fasciitis is an important public health disorder and most of the population mayhave such a presentation at some point in their lifetime. Abnormal weight-bearing, standing for prolongedperiods can cause excessive loading on the plantar fascia causing heel pain. Navicular positions may havean impact on the fascia hence this study intended on assessing the navicular position in subjects with plantarfasciitis.Methods: Written informed consent was taken from all subjects. 49 subjects were recruited for the study ofwhich 46 were females and 3 were males. The navicular height was measured using a goniometer.Descriptivestatistics were used for calculation of percentage values.Conclusion: Our study concluded that subjects with plantar fasciitis did not have a navicular drop. Majorityof the participants had a high arch. Future studies should include larger sample size and also considerrecruiting all genders equally for optimal results.
Zeminlerde Sıvılaşma Analiz ve İyileştirme Yöntemleri
Authors: Mollamahmutoğlu Murat , Babuççu Fatih
Published: April 2021

\"Zeminlerde Sıvılaşma Analiz ve İyileştirme Yöntemleri\" adlı kitap, zemin mekaniği konusunda önemli bir kaynak olarak öne çıkmaktadır. Kitap, Prof. Dr. Murat MOLLAMAHMUTOĞLU ve İnş. Y. Müh. Fatih BABUÇCU tarafından kaleme alınmıştır. Bu kitap, zeminlerin sıvılaşma riski ve bu riskin nasıl analiz edileceği konularını ele almaktadır. Ayrıca, zeminlerin iyileştirilmesi için kullanılan yöntemleri de detaylı bir şekilde açıklamaktadır. Kitap, depremlerin yerel zeminlere olan etkisini de ele alarak, zemin mekaniği ile deprem mühendisliği arasındaki ilişkiyi vurgulamaktadır. Pratik bir yaklaşımla hazırlanan bu kitap, zemin mekaniği konusunda bilgi sahibi olmak isteyen mühendisler ve araştırmacılar için önemli bir kaynak niteliği taşımaktadır.
 
\"The book titled 'Liquefaction Analysis and Improvement Methods in Soils' stands out as an important resource in the field of soil mechanics. The book is written by Prof. Dr. Murat MOLLAMAHMUTOĞLU and Eng. M.Sc. Fatih BABUÇCU. This book addresses the liquefaction risk of soils and how this risk can be analyzed. Additionally, it provides detailed explanations of the methods used for soil improvement. The book also emphasizes the relationship between soil mechanics and earthquake engineering by discussing the impact of earthquakes on local soils. This practical approach makes the book a valuable resource for engineers and researchers who want to acquire knowledge in the field of soil mechanics.\"
FORTIFIKASI BUAH NAGA MERAH (Hylocereus costaricensis) PADA OPAK KASBI ( Manihot esculenta crantz )
Authors: Nereroan Yuliana , Rukmi Kuntjahjawati Susilo Adi , Masrukan Masrukan
Published: April 2021

Telah dilakukan penelitian tentang “ Fortifikasi buah naga merah (Hylocereus costaricensis) pada opak kasbi  ( Manihot esculenta crantz ) ”. Penelitian ini bertujuan untuk mengetahui pengaruh pada penambahan bubur buah naga merah pada pembuatan opak terhadap sifat fisik, kimia dan tingkat penerimaan panelis pada uji organoleptik. Rancangan yang digunakan pada penelitian ini adalah Rancangan Acak Lengkap (RAL) dengan 5 perlakuan dan 3 ulangan. Data hasil pengamatan dari masing-masing parameter dianalisa statistik dengan uji F dan dilanjutkan dengan uji Duncan’s New Multiple Range Test (DNMRT) pada taraf signifikansi 5%. Perlakuan yang digunakan adalah fortifikasi bubur buah naga merah   (Hylocereus costaricensis) dengan opak kasbi (Manihot esculenta crantz) dengan perlakuan fortifikasi opak kasbi  yaitu dengan menambahkan bubur buah naga merah  (Hylocereus costaricensis)  (Kontrol, 5%,15%,25% dan 35%. Hasil penelitian menunjukkan bahwa fortifikasi bubur buah naga merah   (Hylocereus costaricensis) pada opak kasbi (Manihot esculenta crantz)  berpengaruh nyata terhadap kadar air, kadar abu, pati, antioksidan, intensitas warna, ketebalan, pengembangan, warna, tekstur, flavor dan kesukaan. Berdasarkan hasil analisa uji organoleptik opak kasbi  yang masih dapat diterima oleh panelis adalah pada perlakuan dengan penambahan bubur buah naga merah  sebesar 35% yaitu dengan perbandingan antara bubur buah naga merah  perlakuan (kontrol -35%)  yang mempunyai sifat fisik yaitu dengan warna semakin merah  kehitaman dan tekstur semakin rapuh. Sedangkan sifat organoleptik yang dimiliki yaitu dengan warna semakin merah  kehitaman, tekstur semakin rapuh, dan flavor semakin terasa bubur buah naga merah dan rasanya semakin terasa bubur buah naga merah.
Analisis Pengaruh Retribusi Daerah Terhadap Pendapatan Asli Daerah Kabupaten Lombok Utara
Authors: Kartika Shinta Eka , Sutianingsih Sutianingsih , Widowati Widowati
Published: April 2021

This study aims to determine the level of growth, effectiveness, contribution, and prediction of  revenue (PAD) in North Lombok Regency. The data collection technique uses documentation, namely data on regional retribution and PAD for the years 2014-2019. Data analysis using descriptive analysis. The results show that the growth of regional retribution has increased in 2014 and 2015 by 76.3 percent and 72 percent, respectively. Meanwhile, in 2016-2019, the realization of regional retribution decreased by 56.4 percent, 9 percent, 4.7 percent and 55.3 percent respectively. The level of effectiveness of the collection of regional retribution in 2014 was 114.4 percent (very effective). Meanwhile, in 2015 and 2016, respectively 89.1 percent and 88.2 percent (less effective). And in 2017, 2018 and 2019 respectively 66.9 percent, 74 percent and 39.9 percent or included in the ineffective category. The contribution of regional retribution to PAD in 2014-2019 was 16.82 percent (not good), 22.83 percent (good enough), 7.88 percent, 6.16 percent, 6.76 percent and 2.69 percent respectively (not very good). The prediction of regional retribution for 2020-2022 is obtained by an average revenue for three years, namely IDR 19,474,844,122 or there will be an average increase of 33 percent per year. Meanwhile, the PAD prediction obtained an average revenue of IDR 342,948,257,802 or there will be an average increase of 33 percent per year.
METHOD FOR IDENTIFYING LINEAR CORRELATIONS BETWEEN INDICATORS OF POPULATION LIFE QUALITY IN REGIONS OF THE RUSSIAN FEDERATION AND FIRE FATALITIES AMONG CHILDREN
Authors: Искалин Виктор Иосифович , Скибневская Тамара Гагиковна , Туз Наталья Владимировна , Васильева Людмила Викторовна
Published: April 2021

В статье рассмотрено применение метода выявления значимости и важности линейных связей показателей качества жизни населения в регионах Российской Федерации и показателей гибели/травматизма детей на пожарах. Показано статистически достоверное наличие этих связей.

The article considers the application of method for identifying the significance and importance of linear correlation between indicators of the population life quality in regions of the Russian Federation and indicators of fire fatalities/injuries among children. The statistically significant presence of these correlations is shown.
El teatro en Almansa hasta 1939
Authors: Cortés Ibáñez Emilia
Published: April 2021

Rastrear de manera precisa y puntual los inicios del teatro en cualquier ciudad no es tarea fácil y el caso de Almansa no es una excepción. La autora ha estudiado más de 500 años de actividad teatral en Almansa (Albacete), además el presente trabajo está ampliado con diferentes imágenes y listados: cronológicos de títulos, compañías y lugar de representación; y alfabéticos de obras representadas, compañías, autores y libretistas, y compositores. Todas son fruto de una labor metódica y recopilatoria, y ciertamente de gran interés.
THE ROLE OF COMPANY REPUTATION IN MITIGATING NEGATIVE WORD OF MOUTH
Authors: Rahmani Shinta , Halim Rizal E. , Gayatri Gita , Furinto Asnan
Published: April 2021

The study aims to investigate whether a company reputation can be used to reduce the impact of negative electronic word of mouth (eWOM). We conducted experimental research in two studies along with 225 college students, who at least have two accounts in different social media, as participants. We use both qualitative and quantitative methodologies. Qualitative research was carried out with focus group interviews to decide the number of high or low negative reviews as well as the level of credibility. Quantitative research used cross-sectional field design by pilot study and the main study. The model was tested and developed using data collected by questionnaires in paper surveys. The results of study 1 suggest that negative eWOM reduces purchase intentions mediated by the subjective norms and perceived behavior control. High negative eWOM reduces purchase intention more than low ones. Study 2 found out that in a condition of high negative eWOM, good company reputation’s perception affected purchase intention mediated by attitude. Furthermore, purchase intention is higher when a good company reputation’s perception is stronger. Therefor Organizations should convey its company reputation to their customer visually to get a good perception. Further research to investigate another variable that the company has is required.
Cosmic-Ray Diffusion Suppression in Star-forming Regions Inhibits Clump Formation in Gas-rich Galaxies
Authors: Semenov Vadim A. , Kravtsov Andrey V. , Caprioli Damiano
Published: April 2021

Observations of the γ-ray emission around star clusters, isolated supernova remnants, and pulsar wind nebulae indicate that the cosmic-ray (CR) diffusion coefficient near acceleration sites can be suppressed by a large factor compared to the Galaxy average. We explore the effects of such local suppression of CR diffusion on galaxy evolution using simulations of isolated disk galaxies with regular and high gas fractions. Our results show that while CR propagation with constant diffusivity can make gaseous disks more stable by increasing the midplane pressure, large-scale CR pressure gradients cannot prevent local fragmentation when the disk is unstable. In contrast, when CR diffusivity is suppressed in star-forming regions, the accumulation of CRs in these regions results in strong local pressure gradients that prevent the formation of massive gaseous clumps. As a result, the distribution of dense gas and star formation changes qualitatively: a globally unstable gaseous disk does not violently fragment into massive star-forming clumps but maintains a regular grand-design spiral structure. This effect regulates star formation and disk structure and is qualitatively different from and complementary to the global role of CRs in vertical hydrostatic support of the gaseous disk and in driving galactic winds.
The Infrared Emission and Vigorous Star Formation of Low-redshift Quasars
Authors: Xie Yanxia , Ho Luis C. , Zhuang Ming-Yang , Shangguan Jinyi
Published: April 2021

The star formation activity of the host galaxies of active galactic nuclei provides valuable insights into the complex interconnections between black hole growth and galaxy evolution. A major obstacle arises from the difficulty of estimating accurate star formation rates (SFRs) in the presence of a strong active galactic nucleus. Analyzing the 1–500 μm spectral energy distributions and high-resolution mid-infrared spectra of low-redshift (z < 0.5) Palomar–Green quasars with bolometric luminosity of ∼1044.5–1047.5 erg s−1, we find, from comparison with an independent SFR indicator based on [Ne II] 12.81 μm and [Ne III] 15.56 μm, that the torus-subtracted, total infrared (8–1000 μm) emission yields robust SFRs in the range of ∼1–250 M
⊙ yr−1. Combined with available stellar mass estimates, the vast majority (∼75%–90%) of the quasars lie on or above the main sequence of local star-forming galaxies, including a significant fraction (∼50%–70%) that would qualify as starburst systems. This is further supported by the high star formation efficiencies derived from the gas content inferred from the dust masses. Inspection of high-resolution Hubble Space Telescope images reveals a wide diversity of morphological types, including a number of starbursting hosts that have not experienced significant recent dynamical perturbations. The origin of the high star formation efficiency is unknown.
Classification of Magnetohydrodynamic Simulations Using Wavelet Scattering Transforms
Authors: Saydjari Andrew K. , Portillo Stephen K. N. , Slepian Zachary , Kahraman Sule , Burkhart Blakesley , Finkbeiner Douglas P.
Published: April 2021

The complex interplay of magnetohydrodynamics, gravity, and supersonic turbulence in the interstellar medium (ISM) introduces a non-Gaussian structure that can complicate a comparison between theory and observation. In this paper, we show that the wavelet scattering transform (WST), in combination with linear discriminant analysis (LDA), is sensitive to non-Gaussian structure in 2D ISM dust maps. WST-LDA classifies magnetohydrodynamic (MHD) turbulence simulations with up to a 97% true positive rate in our testbed of 8 simulations with varying sonic and Alfvénic Mach numbers. We present a side-by-side comparison with two other methods for non-Gaussian characterization, the reduced wavelet scattering transform (RWST) and the three-point correlation function (3PCF). We also demonstrate the 3D-WST-LDA, and apply it to the classification of density fields in position–position–velocity (PPV) space, where density correlations can be studied using velocity coherence as a proxy. WST-LDA is robust to common observational artifacts, such as striping and missing data, while also being sensitive enough to extract the net magnetic field direction for sub-Alfvénic turbulent density fields. We include a brief analysis of the effect of point-spread functions and image pixelization on 2D-WST-LDA applied to density fields, which informs the future goal of applying WST-LDA to 2D or 3D all-sky dust maps to extract hydrodynamic parameters of interest.
Galactic Cosmic Rays, Cosmic-Ray Variations, and Cosmogenic Nuclides in Meteorites
Authors: Leya Ingo , Hirtz Jason , David Jean-Christophe
Published: April 2021

We present a new generation of model calculations for cosmogenic production rates in various types of solar system bodies. The model is based on the spectra for primary and secondary particles calculated using the INCL++6 code, which is the most reliable and most sophisticated code available for spallation reactions. Thanks to the recent improvements (extending the code to lower and higher energies and considering light charged particles as ejectiles and projectiles), we can for the first time directly consider primary and secondary Galactic α particles. We calculate production rates for 22Na, 10Be, and 26Al in an L-chondrite with a radius of 45 cm and in the Apollo 15 drill core, and we determine the long-term average Galactic cosmic-ray (GCR) spectrum (represented by the solar modulation potential Φ) in the meteoroid orbits at ∼3 au of Φ = 600 MV and at 1 au, i.e., for Earth and Moon of Φ = 660 MV. From this, we calculate a long-term average GCR gradient in the inner solar system of ∼5% au−1. Finally, we discuss the possibility of studying temporal GCR variations and meteoroid orbits using production rate ratios of short- and long-lived radionuclides.
A Machine-learning Approach to Integral Field Unit Spectroscopy Observations. II. H ii Region Line Ratios
Authors: Rhea Carter , Rousseau-Nepton Laurie , Prunet Simon , Prasow-Émond Myriam , Hlavacek-Larrondo Julie , Asari Natalia Vale , Grasha Kathryn , Perreault-Levasseur Laurence
Published: April 2021

In the first paper of this series, we demonstrated that neural networks can robustly and efficiently estimate kinematic parameters for optical emission-line spectra taken by SITELLE at the Canada–France–Hawaii Telescope. This paper expands upon this notion by developing an artificial neural network to estimate the line ratios of strong emission lines present in the SN1, SN2, and SN3 filters of SITELLE. We construct a set of 50,000 synthetic spectra using line ratios taken from the Mexican Million Model database replicating H
ii regions. Residual analysis of the network on the test set reveals the network’s ability to apply tight constraints to the line ratios. We verified the network’s efficacy by constructing an activation map, checking the [N
ii] doublet fixed ratio, and applying a standard k-fold cross-correlation. Additionally, we apply the network to SITELLE observations of M33; the residuals between the algorithm’s estimates and values calculated using standard fitting methods show general agreement. Moreover, the neural network reduces the computational costs by two orders of magnitude. Although standard fitting routines do consistently well depending on the signal-to-noise ratio of the spectral features, the neural network can also excels at predictions in the low signal-to-noise regime within the controlled environment of the training set as well as on observed data when the source spectral properties are well constrained by models. These results reinforce the power of machine learning in spectral analysis.
The Effect of Warm Dark Matter on Early Star Formation Histories of Massive Galaxies: Predictions from the CROC Simulations
Authors: Esmerian Clarke J. , Gnedin Nickolay Y.
Published: April 2021

Several massive (M
* > 108
M
⊙), high-redshift (z = 8–10) galaxies have recently been discovered to contain stars with ages of several hundred million years, pushing the onset of star formation in these galaxies back to z ∼ 15. The very existence of stars formed so early may serve as a test for cosmological models with suppressed small-scale power (and, hence, late formation of cosmic structure). We explore the ages of the oldest stars in numerical simulations from the Cosmic Reionization On Computers project with cold dark matter (CDM) and two warm dark matter (WDM) cosmologies with 3 and 6 keV particles. There are statistically significant differences of ∼5 Myr between average stellar ages of massive galaxies in CDM and 3 keV WDM, while CDM and 6 keV WDM are statistically indistinguishable. Even this 5 Myr difference, however, is much less than current observational uncertainties on the stellar population properties of high-redshift galaxies. The age distributions of all galaxies in all cosmologies fail to produce a substantial Balmer break, although uncertainties in dust attenuation are a potentially significant factor. Finally, we assess the convergence of our simulation predictions and find that the systematic uncertainties on individual galaxy properties are comparable to the differences between cosmologies, suggesting these differences may not be numerically robust.
Shock Breakout in Dense Circumstellar Material with Application to PS1-13arp
Authors: Haynie Annastasia , Piro Anthony L.
Published: April 2021

Shock breakout (SBO), the first expected electromagnetic signature of a supernova (SN), can be an important probe of the progenitors of these explosions. Unfortunately, SBO is difficult to capture with current surveys due to its brief timescale (≲1 hr). However, SBO may be lengthened when dense circumstellar material (CSM) is present. Indeed, recent photometric modeling studies of SNe, as well as early spectroscopy, suggest that such dense CSM may be present more often than previously expected. If true, this should also affect the features of SBO. We present an exploration of the impact of such CSM interaction on the SBO width and luminosity using both analytic and numerical modeling, where we parameterize the CSM as a steady-state wind. We then compare this modeling to PS1-13arp, an SN that showed an early UV excess that has been argued to be SBO in dense CSM. We find PS1-13arp is well fit with a wind of mass ∼0.08 M
⊙ and radius ∼1900 R
⊙, parameters which are similar to, if not slightly less massive than, what have been inferred for Type II SNe using photometric modeling. This similarity suggests that future SBO observations of SNe II may be easier to obtain than previously appreciated.
Ornamentals lead the way: global influences on plant invasions in the Caribbean
Authors: Rojas-Sandoval Julissa , Ackerman James D.
Published: April 2021

Understanding the historical factors associated with the invasion success of alien species in a region may help us to identify sources, vectors, and pathways that are more likely to originate new invaders. Here, we gather data for traits related to the history of introduction (e.g., continent of origin, reason for introduction, and date of introduction) of 616 alien plant species listed as invasive on 18 island groups across the Caribbean region. We used these data to evaluate how human activity has influenced plant invasions on Caribbean islands over time and whether invasion success could be driven by traits of the introduction process. We found that significantly more invasive plants (54%) were intentionally introduced for ornamental reasons than for any other purpose. Most invaders in the Caribbean are native to Asia, South America, and Africa and the cumulative number of invasive species in this region has been steadily increasing during the last 200 years, but since 1850, this trend has been led by species introduced as ornamentals. We also found a significant association between continent of origin and reason of introduction, with more invaders than expected being ornamentals from Asia and America, and forage species from Africa. Our results show that introduced ornamentals are successfully invading all major habitats across the Caribbean, exacerbating conservation issues and threatening native biodiversity. Armed with knowledge of origins and reasons for introductions, effective biosecurity actions as well as control and management strategies can be better targeted to address the problem of invasive species in the region.
Les modes alternatifs de règlement des conflits dans le système juridictionnel mauritanien
Authors: Ba Boubou
Published: April 2021

Résumé Comment concilier justice traditionnelle et justice moderne ? Quelles peuvent être les places respectives de la justice étatique et des modes alternatifs de règlement des conflits ? En Mauritanie, la nature pacificatrice de la justice coutumière et la justice cadiale ont constitué un héritage culturel qui a facilité l'introduction récente de formes modernes de justice alternative tels la médiation et l'arbitrage.
La justice traditionnelle Bashingantahe (Burundi) : une reconnaissance nécessaire ?
Authors: Cadinot Clément
Published: April 2021

Résumé Au Burundi, la justice de proximité des sages bashingantahe n'est pas reconnue par l'État. Pourtant, les justiciables ne s'en détournent pas. Surtout, une coopération spontanée existe bel et bien entre cette intuition traditionnelle et la justice étatique et une interaction à double flux existe entre ces deux systèmes. La question de la reconnaissance par l'État est envisageable mais délicate à deux égards : sa position de principe devrait être revue et la crainte d'une appropriation politique de ce phénomène spontané et vivace persiste.