bluuebunny/crossref_metadata_2025 huggingface dataset:
An analysis of self-compassion influence on posttraumatic growth with resilience as moderation variable
Authors: Adetya Sandra
Published: June 2022

Affair becomes one of traumatic events for an individual which can cause stress. The purpose of this research was to find out the influence of self-compassion on posttraumatic growth on affair victim (the wife) with resilience as the moderation variable. This research employed quantitative method and the collected data were then processed statistically by using Moderated Regression Analysis (MRA). This study involved 100 victims of infidelity. The instruments used are self-compassion scale, posttraumatic growth scale; resilience. The research result proved that self-compasstion was sufficient to help increasing posttraumatic growth on the wife who becomes a victim of an affair.
The effect of pastoral assistance programs on mental health and resilience of congregational members who lost their jobs during the Covid-19 pandemic
Authors: Hutabarat Bernard Maruli , Hutagalung Stimpson , Hendriks Alvyn Cesarianto , Ferinia Rolyana
Published: June 2022

This study aimed to determine the effect of the pastoral care program on the mental health and resilience of church members who lost their jobs during the COVID-19 pandemic. The research method used is quantitative using the Correlated T-test data analysis technique. The research found that the pastoral assistance program applied to congregations who lost their jobs during the COVID-19 pandemic had a significant positive effect on mental health. Likewise, the results of the analysis of the pastoral assistance program applied to congregations who lost their jobs during the COVID-19 pandemic on the resilience of church congregations. So it can be said that there is a significant effect of the pastoral assistance program on the mental health and resilience of the congregation who lost their jobs during the COVID-19 pandemic. Pastoral assistance programs are essential to provide, considering their various functions that impact mental health and provide a complete self-understanding for the community. The congregation is to be able to have resilient behavior where this is important to adapt and lead a normal lifestyle despite losing a job during the COVID-19 pandemic.
The use of basic counseling skills in individual counseling sessions by counseling guidance students
Authors: Dermawan Oki , Defriyanto Defriyanto , Busmayaril Busmayaril , Nisak Khairun
Published: June 2022

This study aims to determine the skills and proficiency of Islamic Education Counseling Guidance students in using basic counseling skills in individual counseling sessions. This research uses qualitative research methods with Case Studies research design with multiple case studies. The data collection technique used by the researcher is a purposive sample in data collection techniques using observation, interviews, and documentation. The results showed that Islamic Education Counseling Guidance students used thirteen basic counseling skills: attending, reflection, exploration, confrontation, open-ended questioning, closed-ended questioning, leading, focusing, tentatively concluding, clarifying, facilitating, concluding, and closing. Some basic counseling skills have not been used, such as paraphrasing, minimal encouragement, interpretation, directing, silence, taking the initiative, advice, and information. What carried out the evaluation results after the individual counseling session ended, the counselee was satisfied with the service, and they said they felt helped. The service process provided by the counselor to the counselee will be much more optimal if the counselor or prospective counselor continues to improve their competence and uses all the basic counseling skills that exist in the assistance process.
Relationship between personality, mindset, academic motivation on grit (persistence) in middle school students
Authors: Aulia Fitri , Takiuddin Muhammad , Rahmatullah Abdul Halim
Published: June 2022

This study aimed to determine the relationship between personality, mindset, and academic motivation of Grit students in high school. Who used the ex post facto quantitative method with simple random sampling to take a sample of 80. The instrument has four variables: personality, mindset, academic motivation, and Grit. The data analysis technique used multiple regression analysis. The results of the hypothesis show that the personality variable with t count t table is (3.123 1.996), mindset variable with t count t table (2.208 1.996) and academic motivation variable with t count t - table (11.02 1,996). These data indicate that overall, all Ho is rejected, and Ha is accepted of the three variables. Based on the Simultaneous test results (F test), the significance value of the personality, mindset, and academic motivation variables is smaller than the significance value of 0.000 0.05. So we can conclude that the variables of personality, mindset, and academic motivation simultaneously have a relationship with Grit in high school students.
Use of Film and PowerPoint Media for Awareness of Sexual Violence in Adolescents Through Group Guidance
Authors: Kusumawardani Anggraeni , Hinggardipta Ratnasari , Herdi Herdi
Published: June 2022

The rapid growth and change in the world has encouraged the use of technology in various fields, including education and learning. Guidance and counseling in schools as part of the education system in Indonesia, uses technology to improve the quality of its services to students. This study aims to measure the effectiveness of using PowerPoint films and media in increasing students' awareness about sexual harassment through group guidance. Action research methods with one group pre-test and post-test and descriptive analysis were used to support the analysis of the results in this study. A total of fifteen students participated in this study. The results showed that the use of films and PowerPoint was effectively applied in group counseling services to increase students' awareness of sexual harassment.
Talking Chips Media for Developing The Group Dynamics in Guidance and Counseling-Grouped
Authors: Silalahi Esrawati , Hartini Sri , Prabowo Agung Budi , Siswanti Rini
Published: June 2022

Learning media is an inseparable part of learning activities. In addition to being needed when delivering lessons, the media is even needed in the implementation of guidance and counseling services so that the intentions in these activities can be conveyed properly to students. The purpose of this study is to clarify the use of media that is often used to practice speaking skills, speaking chips, as a solution to develop group dynamics in group guidance and counseling services. The existence of group dynamics is one indicator of success in group guidance and counseling services. The research method used is library research, which is carried out by interpreting several data sources such as books and journals or relevant scientific articles. The result of this research is that speaking chips media can be used to encourage students to actively communicate and interact in groups so that the dynamics of group guidance and counseling services develops. In contrast to previous studies that discussed techniques and methods in group guidance and counseling services, this research focuses on developing group dynamics as an important part of group services
Counselling and Religious Experience: Life Changes of Former Corruption Convicts can be Specifying Religious Experiences
Authors: Supriyanto Agus , Mulawarman Mulawarman , Sunawan Sunawan , Harahap Fera Hayani
Published: June 2022

Corruption is a corrupted character and appears in certain politicians. Mental corruption in developing countries requires harsh sanctions, although it doesn’t provide a deterrent effect to the emergence of other corruptors in Indonesia. Imprisonment sanctions as long as possible can provide a religious experience so that the emergence of life changes. This article aims to analyse the spiritual experiences that have changed the lives of former corrupt convicts. Documentation study through the analysis of youtube videos from interviews with former corruption convicts who just got out of prison. The research subject is one woman—qualitative analysis as the basis for the emergence of various dimensions of religious experience. The study results found three basic dimensions of the emergence of spiritual experiences affective, cognitive, and behavioural. Religious experience in the affective dimension changes life with a process of acceptance, awareness, regret/mistake, gratitude, and sincerity—spiritual expertise with a cognitive size through self-belief and life lessons that can change lives. Religious experience also raises behavioural dimensions so that individuals can control themselves, be confident, and dare to act. These three dimensions serve as provisions for policymakers to internalise the anti-corruption character.
THE EFFECTIVENESS OF USING COMIC STRIPS TOWARD WRITING ABILITY IN MAKING DESCRIPTIVE TEXT
Authors: Zul Aini Rengur  , Fatima
Published: June 2022

The aim of this research is to find out the effectiveness of using comic strip toward writing ability in making descriptive text. The research belongs to experimental research. The population of this research is the eighth grade of SMPN 7 Ambon consisting 210 students. The researchers took 60 students as the samples and the samples were divided into control group (VIII 3) consists of 30 students and experimental group (VIII 2) consists of 30 students. The researchers conducted testing to get the data (pre-test and post-test) in control group and experimental group. The researchers used descriptive and inferential analysis to analyze the data. The descriptive analysis shows that the result of experimental group shows that in pre-test, the mean is 37.20, the standard deviation is 22.69, and the highest category belongs to very poor category with 53.3% (16 students). While in the post-test the mean is 60.60, the standard deviation is 27.47, and the highest category belongs to very good category with 30.0% (9 students). Meanwhile, the result of control group shows that in pre-test, the mean is 43.26, the standard deviation is 28.20, and the highest category belongs to very poor category with 40.0% (12 students). While in the post-test, the mean is 48.16, the standard deviation is 19.12, and the highest category belongs to fair category with 50.0% (15 students). It means the hypothesis is accepted. There is a significance difference between the students taught using comic strip in making descriptive and those taught without using comic strip in making descriptive text in the eighth grade of SMPN 7 Ambon.
THE IMPLEMENTATION OF GUIDED QUESTIONS TECHNIQUE IN IMPROVING STUDENTS’ ABILITY IN WRITING DESCRIPTIVE TEXT
Authors: Fadilah  , Zuhra
Published: June 2022

This research aims at finding out whether the implementation of guided questions technique can improve the students’ ability in writing descriptive text or not. The researcher applied a quasi-experimental research design which involved experimental class and control class. The population of this research was the second-grade students of SMP Negeri 1 Toribulu. The sample was VIII B as the control class and VIII C as the experimental class that consist of 20 students for each class. The researcher applied the purposive sampling technique. The instrument used to collect the data was test. The pre-test was administered to measure the students’ ability in writing descriptive text before the treatment and the post-test was to measure the students’ ability after the treatment. The data gathered from the test were analyzed statistically. The result of the data analysis shows that the hypothesis of the research was accepted regarding the analysis that the tcounted (2,076) was higher than the ttable (2,0042). The degree of freedom (df) of the table is Nx+Ny – 2 = 20+20-2 = 38 with the level of significance at 0.05. it means that guided questions technique can improve the students’ ability in writing descriptive text.
Pengataa, ToKaili Customary Spatial Planning: A record of tropical settlements in Central Sulawesi, Indonesia
Authors: Sirajuddin Zaenal , Fitriaty Puteri , Shen Zhenjiang
Published: June 2022

Indonesia has experienced multiple disasters induced by several active tectonic faults that cause earthquakes. Central Sulawesi, one of Indonesia's Province, has an active fault known as the Palu-Koro fault. This fault periodically causes disasters (i.e. earthquakes, tsunamis, liquefaction, and landslides). The co-occurrence of these four disasters is locally termed Nalodo. ToKaili – the native tribe that inhabited Central Sulawesi Province – has faced these hazards for generations and formulated local wisdom to minimise their impacts. This local wisdom is called Pengataa. Pengataa serves as a guideline for environmental management, such as determining the location of settlements in consideration of hazards and the environmental equilibrium. This study explores the customary spatial planning (Pengataa) of ToKaili in responding to natural disasters according to disaster records evidence, including the 2018 Palu disaster. This study uses a qualitative method and finds the role of Pengataa in organising ToKaili settlements to minimise the impact of disasters that are free from the effects of Nalodo. This study conveys that customary spatial planning of ToKaili is worthy of considering in the planning of residential areas, especially in relation to natural disasters.
The Succession Patterns of Agricultural Lands in the Special Region of Yogyakarta Province, Indonesia
Authors:   Study Program of Agriculture Extension and Communication, Universitas Gadjah Mada, Indonesia, Maulida Yuhan Farah , Wati Ratih Ineke ,   Study Program of Agriculture Extension and Communication, Universitas Gadjah Mada, Indonesia, . Subejo ,   Study Program of Agriculture Extension and Communication, Universitas Gadjah Mada, Indonesia
Published: June 2022

With prolonged agriculture population aging, farmer regeneration has posed a widespread challenge for developing global agrarian communities. In Indonesia, the younger generation’s disinterest in working in agriculture has evolved into a significant obstacle in the succession process. The study investigates the patterns, challenges, and strategies for farmer regeneration in the Special Region of Yogyakarta province. The analysis used a qualitative case study with data collection techniques through focus group discussions, interviews, and observations. Respondents are 33 experienced older and younger farmers residing in three distinctly allocated research locations in Yogyakarta, namely Sleman, Kulon Progo, and Gunung Kidul regions. The results demonstrate that the younger generation’s career choices vary by rural-urban spatial differences. The study revealed different arrangements in the land inheritance system but no significant variance in the time when the succession happened. The geographical context, land conversion, socialization of the profession, and growing non-farm opportunities are inter-linked as the cognitive factors in farm continuation across generations. To procure an efficient succession process, the research established the implementation of determinants such as improved socialization, recognition of young farmers as innovators, promotion of agricultural-related educational opportunities, and strengthening incentives.
Intra-Uterine Mortality in Morocco: Measures and Impact on Fertility
Authors:   National Institute of Statistics and Applied Economics, GEAS3D Laboratory, Morocco, Mourchid Aicha , Bakass Fatima ,   National Institute of Statistics and Applied Economics, GEAS3D Laboratory, Morocco
Published: June 2022

A recent universal public health problem, intrauterine mortality (IUM), is probably the least documented demographic and social phenomenon in Morocco caused by data scarcity. This study aims to measure the IUM’s intensity and effect on women’s fertility. IUM quotients and their components (early fetal and late fetal mortality) were estimated by constructing the mortality table. An empirical examination of IUM’s impact on fertility was conducted using a direct method, the Bongaarts model (1978) and Leridon (2002) method. The data is from the 2009–2010 National Demographic Survey. The results show that in 2009–2010, the IUM quotient reached 272% pregnancies: 290% in urban areas versus 251% in rural areas. This IUM reduced potential fertility by 6% using the direct method. In particular, abortion reduced potential fertility by 5% versus 3.5% in 2009–2010, using the Bongaarts and Leridon methods. Given the importance of abortion, its impact on fertility, and its multidimensional consequences, it is interesting to research the determinants associated with the recourse to abortion as a significant public health issue.
Factors Affecting Attitudes Toward the COVID-19 Vaccine: Empirical Evidence From the United Arab Emirates
Authors:   College of Education, Humanities and Social Sciences, Al Ain University, United Arab Emirates, Ashour Sanaa , Al-Tkhayneh Khawlah M. ,   College of Education, Humanities and Social Sciences, Al Ain University, United Arab Emirates, El Refae Ghaleb A. ,   College of Business, Al Ain University, United Arab Emirates, Kaba Abdoulaye ,   College of Education, Humanities and Social Sciences, Al Ain University, United Arab Emirates
Published: June 2022

Despite the importance of vaccinations to combat COVID-19, some people are still wary. This study examines factors affecting attitudes toward COVID-19 vaccination in the United Arab Emirates (UAE). Data were collected using an online survey to determine the factors that affect people’s attitudes reluctant to have the COVID-19 vaccine. In total, 958 respondents participated in this study. The main factors affecting people’s attitudes toward the COVID-19 vaccine in the UAE are medical concerns, religious concerns, misinformation about vaccines on social media, the rapid speed of vaccine development, and the risks of side effects associated with the vaccine. There was no difference in gender, but the older respondents (55 and above), those less educated, unemployed, and those who work in the private sector have more fears and hesitancy toward taking the vaccine.
Why Women Are Predisposed to Alzheimer’s Disease
Authors: Ye Keqiang
Published: June 2022

Alzheimer’s disease (AD) exhibits progressive dementia, profound disability, and impaired quality of life. Globally, there are more than 50 million AD patients, over two-thirds of which are women. The cause behind this gender difference had remained unclear for decades until FSH (follicle stimulating hormone), a hormone that dramatically increases in women after menopause, was recently found to trigger this phenomenon.
Impact of COVID-19 Pandemic on Antimicrobial Resistance Pattern; Transition from Resistivity to Susceptibility
Authors: Iqbal Sarmad , Hussain Syed Saad
Published: June 2022

Objective:

The study aimed to assess the antibiotic resistance pattern before and after the pandemic to provide the physicians with general guidance for antibiotic prescribing.

Material and Methods:

The yearly antibiograms of different tertiary care hospitals were extracted from Pakistan Antimicrobial Resistance (AMR) Network. The data timeline observed was from January 2016 to December 2020. The data were scrutinized to the most common organism studied with the most recurring antimicrobial used.

Results:

Among the Gram-positive organisms, increased resistivity against penicillin was observed against both the organism, while a good susceptibility was observed against vancomycin. Among the Gram-negative organisms, the highest resistance was observed in Ceftriaxone, Ciprofloxacin, and Cotrimoxazole. Staphylococcus aureus and Escherichia coli are the most prevalent organisms in tertiary care hospitals.

Conclusion:

While satisfactory susceptibility was observed in Amikacin and Piperacillin/Tazobactam. The post-pandemic era resulted in a decrease in AMR due to significant changes in antibiotic prescribing patterns. This report may guide future antibiotic prescribing.
Guillain-Barré Sendromlu Hastanın Gordon’un Fonksiyonel Sağlık Örüntüleri Modeli’ne Göre Hemşirelik Bakımı: Olgu Sunumu
Authors: ARSLAN Sümeyye , KOŞTU Nazan , ULUTURHAN Cansu
Published: June 2022

Giriş: Guillain-Barre Sendromunda bireyselleşmiş, destekleyici ve komplikasyonları önleyici bir hemşirelik bakımı sunulması önemlidir. Gordon’un fonksiyonel sağlık örüntüleri modeli, bireyleri sistematik olarak değerlendirmek ve hemşirelik bakımını planlamak için kullanılır. Bu çalışmanın amacı; Guillain Barré sendromu olan hastanın hemşirelik bakımını Gordon’un fonksiyonel sağlık örüntüleri modeli ile sunmaktır. Hastanın verileri, gözlem, görüşme ve hasta sağlık kayıtlarından toplanmıştır. Olgu sunumu için yazılı aydınlatılmış onam alınmıştır.

Olgu sunumu: 56 yaşında erkek S.Ç. el ve ayaklarda ani gelişen uyuşma, kuvvetsizlik şikâyetiyle acil servise başvurmuştur. Tedavi ve bakımının tamamlanmasıyla taburcu edilmiştir. Taburculuğundan bir gün sonra hastanın şikayetlerinde artış olması nedeniyle hasta bu kez üniversite hastanesine başvurmuştur. Nörolojik muayene ve tetkikler sonucunda hastaya tanı konmuş, nöroloji yoğun bakım ünitesine yatırılmıştır. Modele göre; sağlığı algılama-sağlık yönetimi, beslenme-metabolik durum, boşaltım, aktivite-egzersiz, uyku-dinlenme, kendini algılama-benlik kavramı, baş etme-stres toleransı örüntülerinde sorun belirlenmiştir.

Sonuç: Gordon’un fonksiyonel sağlık örüntüleri modelinin, hemşirelik bakımını sistematik olarak planlama ve olguyu bütüncül ele almada yararlı olduğu saptanmıştır.
PROMES SERIBU ATM Mewujudkan High Skill dalam Pembuatan Dokumen
Authors: Jaenali Jaenali
Published: June 2022

The skills that must be possesed by students of the Automation and Governance (OAG) competency are making document with predetermined standards. OAG students have not been able to meet the time standard and the number of errors in making documents. The author combines a ten-finger typing system with a blind typing system using the Typing Master application. PROMES THOUSAND ATM is an acronym for Ten Finger Blind System Typing Program Using Typing Master Application. This program has been implemented since the 2016/2017 academic year at SMK Negeri 2 Tegal. Through this learning strategy, students can create documents according to standards. It is proven by the increase in learning outcomes for Office Technology subjects, PKL scores and UKK OTKP scores. With an average learning completeness of 91.09%, an increase in the value of street vendors by 90.59% and the achievement of the UKK score with an average of 91 on the task of making documents.
Analisis Kebutuhan Pengembangan Bahan Ajar Modul Instalasi Jaringan Komputer Mata Diklat Komputer dan Jaringan Dasar di Sekolah Menengah Kejuruan
Authors: Ningsih Sulia , Agustina Nora
Published: June 2022

The purpose of this study was to determine the need for module development in Learning Computer Network Installation and Basic Networking Courses in Class X SMK TKJ SMK Sentosa Bhakti Baturaja. The type of research used is survey research using interview sheets and questionnaires. The data analysis technique used is descriptive statistics. Based on the results of the study obtained data that 100% of the class X TKJ SMK Sentosa Bhakti Baturaja only use teaching materials in the form of textbooks. 50% of students stated that they needed teaching materials in the form of modules to be used as independent teaching materials for computer network installation learning support. This becomes the basis or consideration for the decision to do the development of module teaching materials in learning Computer Network Installation for Computer and Basic Networking Courses.
Rancang Bangun “Siwani” Media Pembelajaran Perakitan Komputer Di Masa Covid 19
Authors: Kholisho Yosi Nur , Nurwaniza Siti , Ismatulloh Kholida
Published: June 2022

Currently the world is facing a big problem, namely the emergence of corona virus disease (covid-19), the entry of this virus inhibits all human activities, including in the field of education. Based on interviews with teachers of computer subjects and basic networks, the subject of computer assembly in the learning process is still hampered by time when learning theory during the Covid-19 period, the application of current learning is using whatsapp groups, where the teacher provides material files and assignments. Online learning with this whatsapp group is considered less than optimal from both teachers and students resulting in students having difficulty understanding the material, based on these problems a solution is given by developing learning media with the name "SIWANI". The objectives of this research are: 1) to build SIWANI as a learning media for computer assembly; 2) determine the feasibility of SIWANI as a learning media for computer assembly; 3) knowing students' responses to SIWANI as a learning media for computer assembly. The method used is Research and Development (R&D) with the ADDIE development model. The results showed that the material expert feasibility test obtained an average of 85% with a very feasible category. While the feasibility test by media experts obtained an average percentage of 81% with a very feasible category. While student responses obtained an average percentage of 83% with a very high category.
Upaya Peningkatan Partisipasi dan Hasil Belajar IPA Melalui Pendekatan Scientific Model Crossword Puzzle pada Konsep Sistem Organisasi Kehidupan Siswa Kelas VIIA
Authors: Marsono Marsono
Published: June 2022

The purpose of this classroom action research is to increase participation and science learning outcomes on the concept of the Life Organization System through the Scientific approach of the Crossword Puzzle model for class VIIA SMP N13 Tegal students in the even semester of the 2018/2019 academic year, namely learning by using crossword puzzles (TTS) as tools used to embed science concepts. This research was conducted in 2 cycles, each cycle consisting of 3 meetings. The data collection method that will be used is observation, and activity documentation. The results of the analysis of student participation in the first cycle is 31.25% in the second cycle is 90.63%. And the analysis of student learning outcomes in the first cycle is 65.63% and the second cycle is 87.50%. Classically, this research is said to be successful because the participation and learning outcomes are above the minimum specified criteria, namely 85% active and 85% of students complete learning.
Profil Kreativitas dan Ketrampilan Bekerja Ilmiah pada Konsep Asam, Basa, dan Garam Siswa
Authors: Agustina Sidon Dina , Siswanto Joko
Published: June 2022

This study aims to analyze the creativity and scientific work skills of Grade VII students of SMP Negeri 1 Ampelgading on the concepts of acid, base and salt. This study uses a test method, the determination of the sample is class VII a number of 32 students, creativity from the category of not creative, less creative, creative and very creative respectively at 6.65%; 39.57%; 53.78%; 0.00%. In the analysis of scientific work skills data from the unskilled, less skilled, skilled and highly skilled categories respectively 4.63%; 38.52%; 55.55%; 1.3%. There is a difference in the presentation between students' creativity and scientific work skills.
Pendidikan di Masa Pandemi Covid-19 (Pemanfaatan Information Communication and Technology)
Authors: Jumiati Jumiati
Published: June 2022

The era of the industrial revolution 4.0 brings challenges for educators to improve learning. In the 21st century learning framework requires easy generations to have skills and knowledge in the field of technology. Especially during the current covid-19 pandemic,itrequirs generations to utilize Information Technology and Communication in the learning proces. This study aims to discuss issues realated to the use of Information and Communication Technology in improving education in the era of the Covid-19 pandemic. The research methodology used is a qualitative research type through library research which is interpreted to produce information in the form of knowledge.The results of the discussion of this research show that Information and Communication Thechnology has a major influence in the era of the Covid-19 pandemic. The Ministry of Education issues a policy with distance learning (online) with the From Work Home System. Information and Communication Technology has several benefits including:(1) increasing student motivation;(2) Gaining insight from the horizon of thinking;(3) Fostering a spirit of togetherness;(4) Effektive and efficient digital portfolios;(5) Being a measuring tool used at school. The application in the online learning process are: Zoom application,google Hangouts application,whatsapp application,teacher room application,zenius learning application, and e-learning application.Learning media used to improve distance learning process (online) such as:internet,e-learning,e-mail,PowerPoint, and learning CDs. By utilizing learning media and application like this,it is easy for generations to have skills and abilities in terms of using and utilizing Information anf Communication Technology properly.
Oral and Injection Hormonal Contraceptives Uptake and Their Risk to Breast Cancer: A Meta-Analysis
Authors: Utami Dian Asih Ning , Murti Bhisma , Budihastuti Uki Retno
Published: June 2022

Background: Breast cancer cases are the biggest contributor to death in women in the world. One of the risk factors is injectable hormonal contraceptives and pills. Injectable hormonal contraceptives and pills contain synthetic hormones progesterone and estrogen that trigger breast cancer, due to an increase in the content of these hormones in the body, this results in an opportunity to experience uncontrolled cell division resulting in gene mutations in the breast gland. The purpose of this study was to analyze the effect of the use of injectable and pill hormonal contraceptives on the incidence of breast cancer using a meta-analysis study.Subjects and Method: This research is a systematic review and meta-analysis using PRISMA flowchart diagram guidelines. The article search process was carried out between 2015-2022 using databases including Google Scholar, PubMed, Science Direct and Springerlink. The keywords used in the database search were
Effects of the Construction Method on Pile Performance: Evaluation by Instrumentation. Part 1: Experimental Site at the State University of Campinas
Authors: Albuquerque Paulo J.R. , Massad Faiçal , Fonseca Antonio V. , Carvalho David , Santos Jaime , Esteves Elisabete C.
Published: June 2022

This paper reviews the behavior of three types of piles (bored, CFA and Omega piles), installed in the experimental site of Unicamp (State University of Campinas). Unicamp subsoil is characterized by non-saturated diabasic soil, lateritic in its surface layer. Extensive data from geotechnical investigation is presented, expressed in parameters derived both from in situ and laboratory tests. Static load tests with electrical extensometers were performed along the depth of instrumented piles. It was observed that most of the loads applied were transferred by lateral friction. An analysis of load transfer functions was made, which displayed a very good definition of both shaft friction and tip interaction, namely the ultimate resistance. The average maximum unit shaft friction resistance of the piles was 41 kPa, 58 kPa and 86 kPa for bored, CFA and Omega piles, respectively. Maximum tip reaction was 87 kPa, 491 kPa and 1665 kPa, for bored, CFA and Omega piles, respectively. This paper also emphasizes the relevance of extracting each pile after completion of the test in order to inspect the pile facies and characteristics. This enabled checking the shape of tips and size of shafts. Part 2 of this paper will review the tests performed at the Experimental Field of FEUP (Faculty of Engineering of the University of Porto/Portugal).
CPT and T-bar Penetrometers for Site Investigation in Centrifuge Tests
Authors: Almeida Marcio S.S. , Oliveira José R.M.S. , Almeida Maria C.F. , Borges Ricardo G.
Published: June 2022

Geotechnical design is based on site investigations which provide a reasonable overview of the soil profile and a realistic estimate of the geotechnical properties of each component layer. Nevertheless, when centrifuge modelling is involved, in situ tests become an additional challenge mainly because of limitations of in-flight procedures, but also due to the miniaturization of regular tools. As centrifuge modelling is becoming widespread, mostly as a result of decreasing electronic and computer costs, miniature site investigation tools are being designed to provide proper geotechnical information about model layers. This paper examines the development of site investigation tools to assess the strength of models during centrifuge tests. These tools are a T-bar penetrometer and a Cone Penetration Test (CPT) apparatus capable of measuring the resistance of clay and granular soils, respectively. These tools were used in a number of centrifuge tests on clay soils and silty tailings respectively. Both tools were tested and the results compared with centrifuge tests, in situ conventional tests, triaxial and direct shear laboratory tests showing an overall consistency and reliability of the measured data.
Back Analysis of a Landslide in a Residual Soil Slope in Rio de Janeiro, Brazil
Authors: Gerscovich Denise M.S. , Jr Eurípedes A.V. , Campos Tacio M.P.
Published: June 2022

After a short period of relatively intense rainfall, a deep-seated landslide occurred in a slope in Rio de Janeiro. On the following day, field inspection revealed full saturation of the failure mass, despite the inexistence of groundwater in the slope. A comprehensive experimental investigation was undertaken to determine the geotechnical parameters of the residual soil. A numerical modeling study of the infiltration processes revealed that the rainfall amount was insufficient to reproduce the saturation condition of the failure surface. This paper introduces the slope stability approach aiming to verify if the factor of safety would reflect a stable condition under the pluviometric records that occurred before the landslide. Therefore, 2D limit equilibrium analyses were accomplished, considering the different hydrological scenarios that were conceived for the flow simulations. The geotechnical parameters were defined according to laboratory test carried out on samples extracted from the slide surface and from an undisturbed site. Pore pressure distributions were obtained from previous results of flow simulations. Regardless of the geometry of the failed mass, the analyses indicated that the landslide could not be triggered solely by rain infiltration. Amongst various alternatives, a preferential flow through the bedrock fractured layer revealed to be the only feasible scenario that could reproduce not only the saturated condition, but also a FS value close to 1. Despite the usual approach of identifying the landslide as a rainstorm-induced mechanism, it appears to be more complex and other infiltration sources may play an essential role.
Settlement of Floating Bored Piles in Brasília Porous Clay
Authors: Stewart W. P. , Cunha Renato P. , Mota Neusa M.B.
Published: June 2022

The geotechnical graduate program of the University of Brasilia maintains a research site on the campus (to be discontinued for a new place). The site is underlain by the typically partly-saturated and potentially collapsible “porous clay” of the Federal District of Brazil. The soil conditions have been thoroughly evaluated using laboratory and in situ geotechnical tests (DMT, CPT, SPT, and PMT). Five bored piles were installed and tested at the site. Simplified analyses have been used so that the results of the tests can be easily compared. The various soil tests were used to estimate the pile settlements which were compared to the measured values and the results are discussed. It has been shown that simple elastic models can be routinely used in practice for the estimation of the settlement of bored floating piles on tropical unsaturated soils. Besides, the results tend to indicate that PMT tests provide the best ratios between predicted and measured data.
Acquired Knowledge on the Behavior of Deep Foundations Vertically and Horizontally Loaded in the Soil of Brasília
Authors: Cunha Renato P.
Published: June 2022

This paper presents and discusses a limited set of results from an extensive testing program which has been carried out since 1995 at the University of Brasília Experimental Research site. This site is underlain by the typical tropical, unsaturated and collapsible soil deposit of the Federal District, which has been thoroughly studied via an on going program of laboratory and in situ geotechnical tests. In this specific location, several isolated deep foundations were constructed and vertically and horizontally loaded with distinct soil moisture conditions. These foundations, and the soil deposit, do represent typical conditions that occur in other areas of the region, and have therefore been simulated under semi controlled conditions. Since 1995, a large number of research theses were involved with this particular theme, and for the first time some of their main results have been condensed and discussed in the same publication within a logical framework. The knowledge in terms of the observed site behavior, its hypothetical explanation, and some theoretically or empirically derived design variables are shown herein. General conclusions in terms of the vertical and horizontal design values are given together with experimental observations on attained displacements under distinct load levels. The influence of specific external factors on the results is studied; for instance the dissimilar behavior of piles constructed with different methods, or the influence of the weather seasons on the bearing capacity values. From this overall set of data one can have an insight into the complex physical mechanisms involved with the performance, and the difficult simulation, of deep foundations founded in tropical “non-classical” soils. It is a collection of results with value for researchers and practitioners at both regional and national levels.
On the Erosive Potential of Some Weathered Soils from Southern Brazil
Authors: Higashi Rafael A.R. , Maccarini Marciano , Dias Regina D.
Published: June 2022

This paper presents a parametric study on erodibility of soils which occurs in Southern Brazil. Different methodologies were carried out and soils more vulnerable to these phenomena were identified. The research lays mainly on erodibility criteria based on infiltrability tests, weight loss by immersion, direct shear tests and modified Inderbitzen tests. Results obtained allowed a comparison and interpretation of the erosive potential of some soil units from the states of Paraná, Santa Catarina and Rio Grande do Sul. By the applied methodologies and their respective criteria, it was observed that Cambisols units present a high erosive potential compared to other soils studied, like Latosols and Red-Yellow Podzolic soils. It was also observed that fine sandy soils were more vulnerable to erosion despite the fact of belonging to the same group. This was due to the different degree of weathering of the stratum from where samples were obtained. Finally, the results also showed that it seems to be possible to successfully correlate the erosive potential of soils with simple indices, which may reflect the characteristics related to certain peculiarities of the soil, such as specific gravity.
The Use of Hydrophobic and Hydrophilic Tensiometers in the Measurement of Water and NAPL Suctions and Determination of SLRC
Authors: Júnior Roberto P.S. , Oliveira I.B. , Machado Sandro L.
Published: June 2022

This technical note presents some preliminary results obtained with the use of hydrophobic and hydrophilic tensiometers to measure liquid pressures in three-phase systems (air-NAPL-water). The porous tips of the hydrophobic tensiometers underwent a surface treatment known as silanization. The silanized tensiometers demonstrated little influence of the interstitial water in the measured values of NAPL suctions, the contrary occurring in the case of the standard ones. Due to water preferential wetability, the water tensiometers with standard porous stone tips presented adequate hydrophilic behavior, measuring water suctions satisfactorily. These tensiometers were also used to determine the soil-liquid retention curves (SLRC) of an eolian sand by vaporization. Water and diesel were used in the performed tests. The performance of the vaporization technique was satisfactory, reducing the time required for test accomplishment and presenting repeatable results. In the case of diesel, due its low vapor pressure and the selective nature of its vaporization process, the use of this technique was shown to be limited. Sample heating was used to accelerate the vaporization process.
Trial Embankment on Gold Mine Tailings
Authors: Ortigão José A.R. , Paiva P. , Fahel André , Landi Antonio , Souto Romulo
Published: June 2022

This paper describes the behaviour of a 10 m high trial embankment built on silt gold mine tailings of Morro do Ouro Dam, Brazil. The dam is the country’s largest tailings dam having 120 m in height and 4 km in length. This trial aimed at investigating tailings strength behaviour, which field experience has already indicated to be better than predicted by in situ and laboratory tests. The embankment foundation was instrumented with piezometers, settlement plates, profiler and inclinometers. Just after placing the first 2 m embankment layer, one observed water surges, interpreted as static liquefaction taking place at low stress level. Large porepressures and displacements were recorded during construction. The embankment height was taken to 10 m, much higher than predictions based on in situ and laboratory tests. The foundation strength was also analysed.
Explicit Numerial Iterative Methods Applied to the Three-Parameter Infiltration Equation
Authors: Cavalcante André L. B. , Ozelim Luan C.S.M. , Swamee Prabhata K. , Rathie Pushpa N.
Published: June 2022

Finding explicit solutions to the partial differential equations governing the infiltration phenomenon tend to be a challenging issue. On account of such complexity, researchers have proposed algebraic equations to model this phenomenon. This paper deals with the solution of the general three-parameter infiltration equation, which is an implicit equation corresponding to the interpolation between the Green-Ampt and Talsma-Parlange infiltration models. By means of the Householders method, the cumulative infiltration is obtained by a rapidly converging iterative procedure. The results are further manipulated in order to obtain the infiltration rate explicitly. The effect of variables involved on the solution is also discussed. A case study is included to demonstrate the use of the proposed algorithm. The formulas proposed provide easy-to-use equations which enable calculations on the fly while considering practical applications.
Discontinuum Modelling in Rock Engineering
Authors: Lemos José V.
Published: June 2022

The evolution of numerical modelling in rock mechanics has made possible a more realistic representation of the behaviour of rock masses, and a more reliable prediction of the response of rock engineering structures. Discontinuum modelling techniques, namely the discrete element method, based on the explicit representation of the rock mass discontinuous structure, have progressively acquired a broader role. In this lecture, the essential concepts and main features of these numerical techniques are discussed, with reference to their historical development. The use of these idealizations is exemplified by two areas in which they proved very effective. On one hand, the analysis of practical rock engineering problems, intended, for example, for safety assessment or monitoring interpretation. This type of application is illustrated herein by dam foundation analyses based on deformable block models. A second level of discontinuum modelling involves research aimed at the understanding of the fundamental behaviour of rock and rock masses. An example of this approach is the analysis of fracture phenomena with particle models, primarily of laboratory specimens, but being extended to larger scales. Critical issues identified in the effective application of these modelling tools are examined, as well as some foreseeable evolution trends.
An Efficient Model for Numerical Simulation of the Mechanical Behavior of Soils. Part 1: Theory and Numerical Algorithm
Authors: Braun A.L. , Awruch Armando M.
Published: June 2022

A numerical model to simulate the mechanical behavior of soils is presented in this first part of the present work. This paper reports some advances obtained in the first stage of an ongoing research, which aims to develop a robust and efficient algorithm for consolidation analyses of saturated/unsaturated soils. Hence, the present work is mainly concerned with basic issues, such as efficiency of the finite element formulation and accuracy of the constitutive formulation. Since geotechnical materials exhibit elastoplastic characteristics, the theory of plasticity is applied here by means of the critical state concept using the Cam-Clay formulation. The constitutive equation is integrated using an explicit algorithm where the strain increment is divided into a number of sub-steps defined automatically by the numerical scheme. Eight-node hexahedral finite elements with one-point quadrature are employed in the spatial discretization of the geometrical domain. In order to avoid excitation of spurious modes, an efficient hourglass control is utilized in conjunction with a corotational formulation, which also contributes to the treatment of geometrical and physical nonlinearities.
Volume Change Behavior due to Water Content Variation in an Expansive Soil from the Semiarid Region of Pernambuco - Brazil
Authors: Ferreira Silvio R.M. , Costa Lícia M. , Guimarães Leonardo J.N. , Filho Ivaldo D.S.P.
Published: June 2022

One of the most important morphological characteristics of expansive soil is contracting and fissuring during drying and swelling during wetting. Soils that change volume when inundated with water require extra care, whether they are used in agriculture, engineering or both. In this paper, conventional and suction-controlled oedometric tests were used to evaluate the changes in volume and swelling pressure caused by changes in water content in an expansive soil from Petrolândia-PE. A coupled hydro-mechanical formulation, implemented in the computational code CODE_BRIGHT, was applied to simulate the tests performed with this soil. The constitutive model used was the double structure generalized plasticity model proposed by Sanchez et al. (2005). The results show that soil expansion, contraction and collapse depend on the initial water content and the external load applied. The conclusion is that volume changes due to water content variation are associated with the initial conditions of the soil and the load applied to the soil. The experimental data and simulation results are in good agreement, showing that the model and computer code are able to accurately represent the hydro-mechanical behavior of expansive soils.