bluuebunny/crossref_metadata_2025 huggingface dataset:
Work place violence against resident doctors of a tertiary care hospital in Delhi, India
Authors: Gohil Rohit Kumar , Singh Prashant Kumar , Saxena Neeraj , Patel Gaurav
Published: February 2019

Background: Workplace violence is much prevalent across the globe in almost all institution dealing directly with general public and hospitals are no exception to it. Hospitals have high incidence of work place violence because it caters a service which attaches the emotional aspect of the patient and their escorts. The present study aims to evaluate this important issue qualitatively and quantitatively.Methods: Hundred resident doctor of clinical discipline were interviewed, and response filled in pre-designed questionnaire between 1st February 2017 to 28th February 2017.Results: A large portion of study population i.e.68% was worried about violence at the work place. Junior residents faced both physical (10.9%) and psychological violence (84.3%). Very few participants out of the study population (8%) have training in managing conflicts. About 92 (61.3%) respondents were not aware of any violence prevention policy at their workplace, 45 (30%) had no idea whether it exists or not.Conclusions: A significant proportion of the violence encountered in the clinical setting is perpetrated by relatives of the patients and it is more prevalent when gang members are present, especially in evening and night time. Most of the physical aggression and a significant proportion of the verbal aggression experienced by doctors are the result of negative media guide, poor communication, and long waiting period, presence of gang members and generally regard clinical issues arising from patient care. Training the resident doctors in good working practices, effective communication and alternative methods of resolving conflicts is generally seen as the way to reduce the likelihood of this type of aggression.
A comparative study on surgical site infections after primary closure and delayed primary closure in clean contaminated laparotomy cases
Authors: Pauly T. J. , Haridas T. V. , Prabhakar E. Manoj , Roshan Roshjo
Published: February 2019

Background: Surgical site infection is a significant cause of post operative morbidity. Timing of skin closure following a surgery and its relation to incidence of infection has been studied. The debate whether primary or delayed primary closure have been around for a long time. The aim of this study is to compare the rate of infection in a laparotomy wound in clean contaminated laparotomy cases after primary and delayed primary closure.Methods: 132 patients who underwent laparotomy for clean contaminated were selected. Of this primary closure of the skin was done in 66 cases and delayed primary closure at 48 hours were done in the other 66 patients. Wounds were followed up till post op day 7. The results between two groups were compared using chi square test.Results: two out of 66 cases developed SSI in the delayed primary sutured group whereas 8 out of 66 cases developed SSI in primary suturing group. The results were compared using chi square test and the chi square statistic was 3.8951 and the p value is 0.048428 (<0.05) proving the result significant.Conclusions: The incidence of surgical site infection in laparotomy wound after a primary closure was higher compared to delayed primary closure in clean contaminated laparotomy wounds and the difference is significant based on statistical evaluation.
A case of midgut malrotation in an adult male causing volvulus and subacute intestinal obstruction
Authors: Vijayalakshmi V. , M. S. K. Amilthan , S. Karthikeyan
Published: February 2019

Small bowel malrotation is a congenital disorder of midgut rotation usually encountered in paediatric age group. Here is a case report of small bowel sub-acute obstruction due to midgut volvulus precipitated by malrotation. The incidence of microtonal presentation in adults is 0.2%, making this case a rarity. This patient presented with chronic vague symptoms like dyspepsia, diffuse low-grade abdominal pain, non-projectile vomiting which were on and off for 4 to 5 years since he presented to us. Furthermore because of the remitting nature of his symptoms, these symptoms usually pointed out to a more benign ailment, so unless we do a more elaborate study like computed tomography, we might miss the diagnosis. This case report emphasis the wide range of presenting age for certain congenital disorders like malrotation of gut.
Economic Implications of Marketing Structure of Banana and Plantain Fruits for the Development of Rural Communities in Enugu State, Nigeria
Authors: Ebere Obetta Angela , Chukwuemeka Obetta K , Ifeyinwa Achike Anthonia
Published: February 2019

There is increase in the level of purchase and consumption of banana and plantain due to their nutritional requirements. This led to increase in the number of market dealers on banana and plantain. Therefore, the study assessed the marketing channel and structure of banana and plantain in Enugu State, Nigeria. Adopting a descriptive survey design, copies of the instrument were administered to 160 banana and plantain sellers. Collected data were analyzed using descriptive statistics and Gini co-efficient. The results showed that majority of the respondents were married females who attained primary education. Majority of the wholesalers obtained their products directly from farmers while 71.80% of the retailers obtained from the wholesalers. The results of the Gini co-efficient for banana and plantain sellers showed low levels of inequitable distribution of income among them. However, inequalities existed more at retail level than at the wholesale level. Recommendations included that international donor should provide links between prospective banana and plantain farmers, policy makers and researchers to identify and analyze new ways of encouraging the market for mutual co-operation and structure for an effective banana and plantain marketing system.
Geostatistical Assessments for Characteristics of Soils Around Naip Dam
Authors: Sarı Hüseyin
Published: February 2019

Investigation and mapping spatial variations (distance-dependent variations) in soil characteristics with the aid of geostatistical methods will bring about significant savings for labor, time and cost in agricultural practices. From this point forth, this study was conducted around Naipköy dam to determine spatial distribution of physical and chemical soil characteristics. Soil samples were taken from both sides of Tekirdağ Ganos Mountain (the side towards Naip plain and the side towards Marmora Sea). The research site was divided into 1000 x 2000 m grids and disturbed samples were taken from 0-30 cm soil profile of 24 points. Soil samples were subjected to texture, organic matter, pH, EC, calcium, magnesium, potassium and phosphorus analyses. Analyses revealed that the sections towards Naip plain had quite high clay and silt contents because of clayey deposition over these sections. These samples also had high calcium and thusly pH values because of lime layers of these sections. Soil properties were mapped in ArcGIS/ArcMAP 10.6 software with the aid of Inverse Distance Weighting (IDW) method. The maps generated facilitated assessments made for the relationships between land use and physico-chemical soil characteristics. Statistical analyses revealed the least coefficient of variation (8.44%) for pH and the greatest coefficient of variation (73.51%) for phosphorus.
Effectiveness of Virtual Reality Technology to teach Gen Z students about Construction Safety: A Pilot Study
Authors: Ghosh Dastider Swarnali
Published: February 2019

This pilot study was conducted to investigate the effectiveness of using Virtual Reality (VR) technologies to teach the "Generation Z" (GenZ) students about construction safety as part of the Construction Science and Management (CSM) program at Tuskegee University.  Research shows that the "Technology Generation" or GenZ students are not satisfied with the traditional pedagogical methodology; rather they demand new hands-on tech-heavy immersive learning experience. In this direction, Virtual Reality is propelling profound technological renovation within the practice of Architecture, Engineering, and Construction (A/E/C) industry allowing for a new pedagogical approach. In this approach, students learn from a 3D dimensional smart environment to help identify the construction safety challenges, instead of going to the potentially dangerous construction sites. This approach has been proven to positively influence construction education in many ways, including enhanced awareness and hazards recognition, in general. This research aimed to test this theory to teach GenZ students enrolled at the CSM program at Tuskegee University.  For this study, GenZ students were first exposed to traditional 2D teaching aid demonstrating construction hazards and then the multiple Virtual Reality (VR) serious games. Their response was recorded through written reports, oral interviews and a survey followed by a comparative analysis between 2D visual aid and VR technologies to test the theory as mentioned earlier. These results indicated that the GenZ students greatly welcomed VR Construction Safety exercises more than traditional 2D visual aids and were interested in exploring more.
Pin-ended column buckling load is 2.73% lower than Euler's
Authors: Al-Najmi Abdulqader Said
Published: February 2019

A verification calculation was aimed at further proving that the least critical load gives the Euler buckling load for a pin-ended column to be : Pcr=(PI)2*EI/L2. Selecting a parabolic function for this purpose, that meets the boundary conditions and is almost exactly similar to the symmetrical function sin(x). It was expected to obtain a critical load that is larger than the load given by the sine function. The parabolic function produced  LOWER CRITICAL LOAD by about 2.73%.
The Effect of Information Technology on Quality Management and Employee Performance of the Jember University Library
Authors: H. Achmad Taufik , Titisari Purnamie , . Sudaryanto
Published: February 2019

One of the factors in question is human resources (HR). The quality and advantages issued by each individual (HR) are expected to contribute to the progress of the organization. Contributions to the progress of the organization in accordance with the opinion of Titisari, Purnamie et al. (2016) "an organization that is always developing is everyone's hope. Both the government and the private sector expect their organizations to grow and develop well. This development is expected to enable organizations to compete, which cannot accelerate with the progress of this organization to be left behind”. This study focuses on developing information technology on employee performance, developing quality management on employee performance and developing information technology on quality management. The Jember University Library which will be used as an object in this study has long implemented a quality management system and implementation of information technology in all processes carried out. The object of the research was conducted in the Library with a sample of 46 employees. The data source used is a questionnaire which is primary data and secondary data such as the list of employees and the organizational structure of the University Library of Jember. Varies using a Likert scale. The analytical tool used uses SmartPLS 3.0. In this study obtained results produced by Quality Management (X2) on Employee Performance (Y1) has a path coefficient value of 0.419 and its effect is significant (t = 2.897, p = 0.004) because t> 1.96; p <0.005. The Effect of Information Technology (X1) on Employee Performance (Y1) has a path coefficient value of 0.456 and its effect is significant (t = 3.188, p = 0.002) because t> 1.96; p <0.005. The Influence of Information Technology (X1) on Quality Management (X2) has a path coefficient value of 0.853 and its effect is significant (t = 21.597, p = 0,000) because t> 1.96; p <0.005. Thus it can be concluded that Ha is accepted because of t-statistics> 1.96. Approved with the value of probability it can be concluded that Ha is accepted because p <0.05.
On the Influence of Taoism on Female Characters in Moment in Peking
Authors: Lu Shibo
Published: February 2019

Moment in Peking is one of the most famous English novel of Lin Tangy. It was written when Dr. Lin lived in Paris from August, 1938 to August, 1939. It is modeled on the structure of A Dream in Red Mansions, and dedicated “To the Brave Chinese Soldiers”. It tells the vicissitudes of life and the feelings of gratitude and resentment of the Zengs, the Yaos, the News, from the Boxer Rebellion (1901) to the Anti-Japanese War. It showed the historical style and features of the changes of modern Chinese society. The book shaped hundreds of figures, including more than 50 women images. The author expressed in a unique angle to express his respect and admiration to women. Every woman has a different story, and distinct personality traits. (Wang Zhibo, 2006:4) Their personality is distinct, high status, even beyond men in some ways. Compared with the previous writers, the author has a detailed understanding of women, and his work is more closed to the real life, so as to achieve a new world. At that time, this had made a great progress, although flawed, but in spite of his flaws.

The author represents his Taoist thought through the whole novel, in terms of characterization, plot and etc. Taoist thought is not only the theme of the full text, but also determines the basic structure of it. The author in the book conveys details of Taoist thought and, reflects the Taoist thought on three levels, namely the Taoist chronological life, easy detachment of the outlook on life and the method of gaining liberation, and spiritual freedom.
Aplicação do modelo do fluxo de caixa descontado em uma pequena empresa
Authors: Bruchez Wyllian Patrik , Pinto Nelson Guilherme Machado , Liszbinski Bianca Bigolin , Pietro Neto José de
Published: February 2019

Diante da incerteza do futuro e do aumento do nível de competitividade muitas empresas têm buscado ferramentas de análise e gestão focadas na avaliação de seu desempenho. Essa busca vem da necessidade de antecipar e potencializar as decisões estratégicas e consequentemente maximizar a riqueza do negócio. Para isso encontra-se na literatura financeira ferramentas que visam guiar o investidor a mensurar e acompanhar o valor do seu negócio, assim, verificando o impacto das decisões gerenciais no valor econômico da empresa. Dos inúmeros métodos de valoração existente na literatura financeira destaca-se o método do Fluxo de Caixa Descontado (FCD), que avalia o valor de um negócio por sua capacidade de gerar riqueza ao longo do tempo, descontando esse valor pelo custo do capital do negócio. Neste contexto, este trabalho tem o principal de mensurar o valor de uma empresa que atua no setor de maquinário agrícola na cidade de Palmeira das Missões – RS, através da metodologia do fluxo de caixa descontado. Para tal projetou-se os Fluxos de caixas da empresa para três cenários distintos, calculou-se também o WACC (custo médio ponderado de capital) da empresa. Os valores obtidos refletem os fundamentos e o risco da empresa, demonstrando o valor da empresa para seu desempenho em diferentes cenários, evidenciando o FCD como uma ferramenta de apoio a decisão e de gerenciamento do valor do negócio. O valor intrínseco total da empresa analisada obtida por meio da ponderação dos cenários estudados é de R$ 25.203.787,00 para o período de análise.
Passagens de Valor para uma Cidadania Global: a formação humanista de uma inteligência superior e o consequente alcance de um direito fundamental em consonância com os valores das Nações Unidas
Authors: Rieder Daiane Dutra , Machado Mateus Renard
Published: February 2019

A palavra educação não mais se restringe a um simples processo pedagógico nos dias atuais. É necessário o implemento de valores substanciais que façam emergir uma inteligência superior. E esse é o modo pelo qual a Antonio Meneghetti Faculdade (AMF), pautada nos princípios da Ciência Ontopsicológica, como também em propostas da Organização das Nações Unidas, forma, hoje, cidadãos de uma consciência global, capazes de serem gestores de impactos na sociedade em que vivem. Por meio das atividades propostas, a AMF ainda se consolida como uma instituição privada que norteia a garantia de um direito fundamental, inerente à pessoa humana: o direito à educação. Mediante a aplicação da metodologia bibliográfica, este trabalho substancia-se a partir de uma discussão teórica acerca de dois valores principais – o humanismo e a sustentabilidade – trabalhados constantemente na instituição como valores substanciais para o desenvolvimento integral do ser humano e, consequentemente, do social.
Co-Occurrence of Obsessive-Compulsive Disorder and Substance Use Disorders Among U.S. Veterans: Prevalence and Mental Health Utilization
Authors: Ecker Anthony H. , Stanley Melinda A. , Smith Tracey L. , Teng Ellen J. , Fletcher Terri L. , Van Kirk Nathaniel , Amspoker Amber B. , Walder Annette , McIngvale Elizabeth , Lindsay Jan A.
Published: February 2019

Obsessive-compulsive disorder (OCD) and substance-use disorders (SUDs) co-occur at high rates, which is related to poorer psychosocial outcomes. Prior work suggests that, among veterans in the Veterans Health Administration (VHA), OCD is underdiagnosed and undertreated, which can compound negative effects of OCD and SUD co-occurrence. This study identified patterns of OCD and specific SUD co-occurrence and their effect on mental health and substance-use screening measures and mental healthcare utilization. Using VHA administrative data, we identified veterans with an OCD diagnosis from 2010 to 2016 (N = 38,157); 36.70% also had a SUD diagnosis. Specific SUD rates are alcohol-use disorder, 17.17%; cannabis-use disorder, 5.53%; opioid-use disorder, 3.60%; amphetamine-use disorder, 1.49%; cocaine-use disorder, 3.37%; and tobacco-use disorder, 26.50%. Veterans with co-occurring OCD and SUD used more mental health services throughout the data capture period. Findings suggest that OCD and SUD co-occur at high rates within the VHA, and that this is associated with more burden to the healthcare system. Targeted screening and treatment efforts may help address the needs of this population.
Obsessive-Compulsive Tendencies in a Sample of Veterans With Posttraumatic Stress Disorder
Authors: Aldea Mirela A. , Michael Kathryn , Alexander Kerri , Kison Saarah
Published: February 2019

Obsessive-compulsive disorder (OCD) is considered one of the most debilitating disorders worldwide. Data suggests that trauma may be a significant source of not only posttraumatic stress disorder (PTSD), but also OCD. An epidemiologic study of the general population found the risk for OCD to be increased 10-fold in persons with PTSD. The National Vietnam Veterans Readjustment Study found the prevalence of OCD to be 5.2% in war-zone veterans and other studies highlighted PTSD–OCD comorbidity rates ranging from 41% to 70%. However, the frequency of diagnosed OCD is low among veterans (0.6%), and veterans with OCD receive little mental healthcare after diagnosis (mean: 3.8 sessions). The present study examined obsessive-compulsive (OC) tendencies in a sample of veterans with PTSD seeking treatment in a Veterans Affairs (VA) PTSD program between 2011 and 2013. Of the 318 veterans with PTSD included in the current study, 125 (36%) also reported OC tendencies. Data analyses revealed that participants with PTSD who showed evidence of OC tendencies demonstrated more severe PTSD symptoms, higher anxiety sensitivity, and lower cognitive flexibility than participants with PTSD without comorbid OC tendencies; no differences regarding posttraumatic growth were found between the two groups. This is a preliminary study aiming to assess OC tendencies in a sample of veterans with PTSD and expand on the limited existing literature on OCD–PTSD comorbid presentation among veterans.
Examining the Relationships Between Perfectionism and Obsessive-Compulsive Symptom Dimensions Among Rural Veterans
Authors: Raines Amanda M. , Carroll Michele N. , Mathes Brittany M. , Franklin C. Laurel , Allan Nicholas P. , Constans Joseph I.
Published: February 2019

Perfectionism, a trait-like individual difference variable reflecting the tendency to set extremely high standards along with critical evaluations of one's own behavior, has long been regarded as a risk and maintenance factor for obsessive-compulsive disorder (OCD). However, research exploring the relationship between these constructs is mixed. One explanation for these equivocal findings is the heterogeneous nature of OCD. Indeed, there is increasing evidence for distinct symptom dimensions that are more homogenous than the broad OCD phenotype. The current study examined the associations between self-reported perfectionism and OCD symptom dimensions controlling for probable depression status. The sample included 67 rural veterans. Results revealed a unique association between perfectionism and the unacceptable thoughts dimension of OCD. These findings are consistent with a growing body of literature demonstrating that OCD symptom dimensions have unique underlying dysfunctional beliefs.
Exposure and Response Prevention for Obsessive-Compulsive Disorder: A Case Study of a Veteran With Violent Intrusive Thoughts
Authors: Siffert Veronica , Riahi Colette , Stanley Melinda A. , Fletcher Terri L.
Published: February 2019

Exposure and Response Prevention (ERP) is the gold standard treatment for obsessive-compulsive disorder (OCD); however, few studies have evaluated the use of ERP with veterans. This case study describes ERP and medication treatment of a veteran who experienced violent sexual thoughts, countered by compulsions of focusing on the distressing thought to ensure a negative emotion or reversing the thought to a nonviolent thought or image. The veteran had previously received supportive psychotherapy and medication for depression, anxiety, and sleep difficulties, with poor treatment adherence. Upon reengagement in treatment, the therapist provided ERP in 34 sessions over 14 months, with 15 sessions via video telehealth to home. The patient used the OCD Workbook as a resource throughout treatment. The patient developed a hierarchy of target obsessions and rituals with associated subjective units of distress; completed exposures, beginning with lower-level items; and wrote imaginal scripts. He also received zolpidem for insomnia and venlafaxine for anxiety and depression. His scores on the nine-item Patient Health Questionnaire and Yale Brown Obsessive-Compulsive Scale decreased significantly.
A Planned Cesarean Section-Hysterectomy for Placenta Previa Totalis Percreta in Patient with History of Two Cesarean Sections
Authors: Nainggolan Julita
Published: February 2019

The presence of placenta previa may be associated with placenta accreta[1].  Maternal and fetal morbidity and mortality from placenta previa accreta are considerable and are associated with high demands on health resources. With the rising incidence of caesarean sections combined with increasing maternal age, the number of cases of placenta praevia and its complications, including placenta accreta, will continue to increase[2]. Here, we present a case of  placenta previa totalis percreta in previous cesarean section twice. In this case, patient with placenta previa totalis-percreta we diagnosed and prepared  proper management with the involvement of multidisciplinary team. We reduced blood loss by performing total abdominal hysterectomy immediately after delivered the baby and the postoperative course was uneventful.
PENGARUH MODEL PEMBELAJARAN KOOPERATIF CONCEPTUAL UNDERSTANDING PROCEDURES (CUPs) TERHADAP HASIL BELAJAR KIMIA
Authors: Subarkah Bagus , Nurbaity Nurbaity , Darwis Darsef
Published: February 2019

Tujuan penelitian ini adalah untuk mengetahui pengaruh pembelajaran kooperatif Conceptual Understanding Procedures terhadap hasil belajar kimia siswa pada materi kesetimbangan kimia. Penelitian ini dilakukan di SMAN 100 Jakarta pada semester 1 tahun ajaran 2012/2013. Metode penelitian yang digunakan adalah Quasi Eksperimen tipe Pos test-only Exp & Control Group Design. Sampel pada penelitian ini merupakan siswa-siswi kelas XI IPA 1 dan XI IPA 2  yang dipilih secara purposive sampling untuk mendapatkan kelas eksperimen dan kontrol. Instrumen yang digunakan adalah tes berupa soal pilihan ganda yang sudah valid dengan lima alternatif jawaban. Uji prasyarat analisis yang digunakan adalah uji normalitas dengan uji Kolmogorovâ€“Smirnov dan uji homogenitas dengan uji Fisher. Berdasarkan hasil perhitungan, diperoleh data berdistribusi normal dan data kedua kelompok sampel mempunyai varian yang sama atau homogen. Pengujian hipotesis menggunakan uji t separated varians. Hasil analisis data untuk uji hipotesis hasil belajar kimia siswa diperoleh thitung 2,35 > ttabel 1,67 pada taraf signifikansi 0,05 artinya terdapat pengaruh yang signifikan pembelajaran kooperatif Conceptual Understanding Procedures terhadap hasil belajar kimia siswa.

Kata kunci : Hasil Belajar Siswa, Pembelajaran kooperatif, Conceptual Understanding Procedures, Quasi Eksperimen.
Peningkatan Motivasi Belajar Siswa pada Materi Reaksi Reduksi Oksidasi melalui Model Pembelajaran Flipped Classroom dengan Cooperative Learning
Authors: Lestari Dian , Nurbaity Nurbaity , Hadinugrahaningsih Tritiyatma
Published: February 2019

Tujuan dari penelitian ini adalah untuk meningkatkan motivasi belajar siswa pada materi reaksi reduksi oksidasi melalui model pembelajaran flipped classroom dengan cooperative learning. Cooperative learning yang diterapkan dalam penelitian adalah tipe Number Head Together (NHT). Penelitian dilakukan pada Semester II Tahun Ajaran 2016/2017 di salah satu SMA Negeri di Jakarta. Metode penelitian yang digunakan adalah Penelitian Tindakan Kelas melalui 4 tahapan, yaitu tahap perencanaan, pelaksanaan tindakan, pengamatan serta tahap refleksi. Penelitian dilaksanakan selama 2 siklus sampai keenam indikator tercapai. Indikator motivasi belajar siswa yang digunakan adalah minat siswa dalam proses pembelajaran, perhatian siswa selama proses pembelajaran, respon siswa terhadap stimulus dari guru, semangat siswa dalam mengerjakan tugas belajar, Tanggungjawab dalam mengerjakan tugas serta rasa senang dan puas dalam mengerjakan tugas yang diberikan guru. Siklus I menghasilkan dua indikator motivasi belajar yang tercapai, yaitu minat siswa dalam proses pembelajaran dan Tanggungjawab dalam mengerjakan tugasâ€“tugas belajar, pada siklus II semua indikator telah tercapai. Seiring dengan meningkatnya motivasi belajar siswa, hasil tes evaluasi siswa juga mengalami peningkatan. Model pembelajaran flipped classroom dengan cooperative learning memberikan dampak positif terhadap peningkatan motivasi belajar siswa.

Kata Kunci: Motivasi Belajar Siswa, Flipped classroom, Number Head Together
Pengaruh Model Pembelajaran Guided Inquiry Dipadu Two Stay Two Stray (TSTS) Terhadap Keterampilan Proses Sains Siswa Pada Materi Larutan Asam Basa Terintegrasi Pendidikan Lingkungan Hidup
Authors: Deli Hadits Rafidah , Purwanto Agung , Darwis Darsef
Published: February 2019

Penelitian ini bertujuan untuk mengetahui pengaruh penerapan model pembelajaran guided inquiry dipadu  Two Stay Two Stray (TSTS) terhadap keterampilan proses sains siswa pada materi larutan asam basa terintegrasi pendidikan lingkungan hidup. Metode yang digunakan adalah kuantitatif tipe Quasi Experiment menggunakan desain Posttest Only Nonequivalent Control Group. Subjek penelitian terdiri dari siswa kelas XI jurusan IPA sebagai kelas kontrol dan kelas eksperimen yang berjumlah 36 siswa pada masing-masing kelas. Instrumen penelitian yang digunakan adalah rubrik keterampilan proses sains dengan skala penilaian 1 sampai 4 dan hasil belajar (posttest) berupa pilihan ganda. Rata-rata skor keterampilan proses sains siswa kelas kontrol sebesar 2,8 sedangkan kelas eksperimen sebesar 3,1 dengan kategori baik. Berdasarkan analisis statistik diperoleh bahwa terdapat perbedaan keterampilan proses sains siswa pada kelas kontrol dan kelas eksperimen ( thitung= 7,14; ttabel= 1,66 maka thitung> ttabel), sehinga dapat disimpulkan bahwa model pembelajaran guided inquiry dipadu TSTS berpengaruh positif terhadap keterampilan proses sains siswa pada materi larutan asam basa terintegrasi pendidikan lingkungan hidup.

Kata Kunci: Keterampilan Proses Sains, Guided Inquiry, Larutan Asam Basa, TSTS
A deaf and a hearing student learning Portuguese and Libras in a tandem context
Authors: Figueiredo Francisco José Quaresma de , Oliveira Quintino Martins de
Published: February 2019

Inclusive education in Brazil has created a linguistic reality at schools in which deaf and hearing people share the same space (QUADROS; KARNOPP, 2004). However, some obstacles make it hard for this interaction to flow naturally, both by deaf people who do not master Portuguese and hearing people who do not know Brazilian Sign Language. Various studies about the process of teaching and learning spoken languages emphasize the relevance of  collaborative interaction in pairs or in groups in the co-construction of knowledge (FIGUEIREDO, 2006; SWAIN, 1995). It is in this collaborative context that the present research takes place with the objective of promoting authentic contact between deaf and hearing people, who are beginners in the languages being studied, by means of tandem language learning. It is an approach used in the learning of spoken languages with the purpose of promoting linguistic and cultural exchange among people whose native languages are different (BRAMMERTS, 1996). We intended to verify the possible benefits of such approach to the speakers of languages of different modalities: a spoken language (Portuguese) and a visual-spatial language (Brazilian Sign Language - Libras). A deaf student and a hearing one who take Brazilian Sign Language as a major at the Universidade Federal de Tocantins, Porto Nacional, Brazil, took part in this study. They had to teach each other idiomatic expressions in their own languages. The collaborative strategies used by them and the negotiation established in such encounters show that the interaction among deaf and hearing students contribute to the process of learning the languages.
Deconstructing language learners’ feelings of inferiority through teletandem
Authors: Zulaica-Gómez Paula A.
Published: February 2019

Teletandem is based on principles of reciprocity, equality, collaboration, and autonomy between two participants who are eager to learn their target language and share their knowledge of the one in which they are proficient at the same time. While this is true, each party comes to the experience with their own context, perception, and attitudes towards their target language, and thus, their circumstances are unequal, particularly those pertaining to their motivation for enrolling in a foreign language class. In the case of Mexican learners of English as a foreign language, several sociocultural factors, resulting from the country’s colonial history affect their motivation and attitude towards English. This article focuses on a) how perceptions and attitudes towards English affect the willingness of Mexican learners to participate in teletandem sessions by self-imposing a lower station within a preconceived social hierarchy, and b) how teletandem can break through these preconceived notions and change the way they perceive themselves and their partners. Results of post-session evaluations reveal how after participating in teletandem and reflecting on the experience, they report increased motivation and confidence in their target language skills.
New directions in eTandem: an expanded vision of capabilities and practices
Authors: Marsh-Soloway Michael Abernathy , Delers Olivier Michel
Published: February 2019

Autonomy and reciprocity, two central tenets of eTandem, are not ideologically neutral terms. In light of new technological opportunities and pedagogical directions in higher education, current formulations of these concepts are perhaps too narrow to accommodate the full range of collaborative activities available to instructors and students. For better or worse, education assumes a significant and definitive role in the market economy. The public-private distinction is not an actual binary: it is more accurately understood as a spectrum, and educational institutions function dually as hybrid recipients and benefactors of economic activity. eTandem is an excellent foundation, but teachers should not feel limited in its scope and purview. By reflecting on instructional activity and observation in Arabic, Italian, and Spanish courses at the University of Richmond, this article presents different interpretations of eTandem. The traditional model can be enhanced with related tools and methodologies to engage students more deeply, and challenge them to push the boundaries of their language, abilities, and knowledge. While additional SLA research would be needed to confirm the transference of learning outcomes of both models through comparative evaluative metrics, this article outlines ideas for instructors to commence new directions in eTandem, and consider improvements to long-standing practices.
Teletandem mediation on Facebook
Authors: Nogueira de Moraes Garcia Daniela , Gomes de Souza Micheli
Published: February 2019

Teletandem is a telecollaborative learning context, which involves the process of pairing up language learners of different institutions around the world. Since 2006, institutional teletandem practice has involved the offer of pedagogical mediation to support learners’ development. The mediation aims to provide teletandem participants a context for sharing experience and reflecting on their language and intercultural learning process. This article aims at describing the mediation session procedures and the findings of a study carried out during teletandem interactions between students from Brazil and from the United States. A private Facebook group was used to support the contact between the mediator and students of the Brazilian university. In this work, we present the review of the concept of mediation in teletandem and present the results of an interpretivist qualitative analysis that show that the role of the mediator is focused on providing encouragement and guidelines based on teletandem theory and principles. We also point out the study limits and propose some possibilities for future research that might focus on mediation sessions through virtual platforms or social networks.
Teaching social issues through cinema and teletandem
Authors: Castillo-Scott Aurora
Published: February 2019

Teletandem is an innovative learning experience that helps to connect foreign language students with native or competent speakers in a virtual context. Through a Teletandem project, students have the opportunity to learn a language while developing a new cultural dimension. This paper presents the pedagogical experience of using Spanish cinema and a U.S. – Chilean Teletandem project designed to promote linguistic skills while addressing sociocultural issues related to the target culture. Using Web 2.0 tools, students had monthly synchronous conversations that focused on cultural, racial, gender, and social-political problems associated with the Hispanic culture. The Teletandem project allowed students to compare information learned in class with the material collected from their partners. This exchange of information helped students to form their own opinions and gain new perspectives of the target culture.
Telecolaboração transcultural e transcontinental para aprendizagem de línguas estrangeiras: propostas e desafios
Authors: Costa Leila Martins Gonçalves da , Salomão Ana Cristina Biondo , Zakir Maisa de Alcântara
Published: February 2019

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Slim Well Casing Design for a Deepwater Application Using a Fast and Flexible Finite Element Engine
Authors: Panayirci Murat , Houette Olivier , Brands Sjoerd , Paraschiv Marius , French Simon
Published: February 2019

In the exploration and production (E&P) industry attempts at reducing the cost of the well construction by applying various well architecture slim designs has attracted attention from operators for decades. The recent industry downturn has further contributed to a renewed focus on this strategy. In this study we present a slim well design application within the FortunaCo project (a Joint Venture between OneLNG and Ophir), which aims at developing the Fortuna and Viscata fields in Deepwater offshore Equatorial Guinea. An advanced static nonlinear Finite Element engine is used in this process, which considers contact and friction; can handle large deformations and is therefore suitable to carry out buckling analysis. The top hole structural robustness is analyzed using this engine in the event of a worst case axial load, which for this study is assumed to be:The Conductor Pipe (CP) able to take its own weight only,The upper section of the surface casing (inside the CP) free of cement,The full buoyant weight of the Horizontal Christmas tree and Subsea Blowout Preventer applied onto the well.

This paper demonstrates that the selected numerical model is suitable to estimate critical buckling loads and identify post-buckled modes exerted on surface structural casings. Furthermore, it is shown that the visualization capabilities and speed of the engine allow the operator to optimize the design iteratively in an efficient manner. We conclude that the selected methodology is suitable for the operator to validate a slim well design for a Deepwater development application at concept phase for minimal cost with the necessary level of confidence.
Eliminating Rig Time from MWD Surveying
Authors: Lowdon Ross , Breen Michael , Mouyiasis Michael , Edmunds Michael , Bulychenkov Konstantin , Brovko Katerina
Published: February 2019

Directional surveys are taken while drilling a well to enable well placement and to avoid hitting other wells. This requirement is becoming increasingly important as reservoirs become more complex to reach and fields become ever more crowded. Taking directional surveys either before, during or post connection takes time, waiting for surveys to be pumped up takes longer and may need to be repeated if a critical survey cannot be taken first time which is a particular problem in shallow hole offshore operations. This paper outlines an industry first technology that will effectively eliminate surveying time, a definitive continuous survey will be available to the directional driller at all times, eliminating the need to take and wait for a survey before making the next directional drilling decision.

Continuous 6 axis surveys are cutting edge replacement for the static six axis Measurement While Drilling (MWD) surveys which have been used as the primary surveying tool worldwide for decades. The three magnetometers and Inclinometers provide an accurate inclination and azimuth when the drillstring is stationary. Continuous six axis MWD surveying could be described as a static survey captured continuously while drilling a stand allowing for accurate inclination and azimuth at all times. The directional driller will know where they are definitively at all time, eliminating the requirement for surveying time, enabling efficient decision making while eliminating the need for additional pump cycles, their associated wash outs and the directional difficulties that stem from that.

Field test examples of this continuous 6 axis MWD surveying will be shown with comparisons between other MWD systems these will be analyzed to establish consistency and accuracy. An error model for the continuous six axis survey will be discussed in some detail, as it is inherently different to a normal static MWD survey and comparison will be made to other error models. The time savings involved with continuous six axis surveys will also be shown, with a discussion on the associated benefits to the directional driller from reduced pump cycles.

Directional surveying is generally seen as a must have on a rig, however the associated rig time is considerable. This unique and world first method will discuss how continuous six axis survey are made, the accuracy modelled and so how the industry can eliminate rig time associated with MWD surveying.
Automated Preprocessing Techniques for High Frequency Downhole Sensor Data
Authors: Baumgartner Theresa , Ashok Pradeepkumar , van Oort Eric
Published: February 2019

Good quality downhole drilling data can provide valuable insights into the downhole environment, allowing for improvement of the drilling process. It can also greatly facilitate drilling automation. Despite these benefits, there are still high barriers to using downhole data in a timely and efficient manner. The work presented here aims to improve its usability for engineers and analysts by introducing a variety of strategies to automatically correct and draw insights from downhole measurements without human inputs.

Downhole dynamics measurements show errors that are currently inevitable, particularly because downhole sensors are affected by factors such as high pressures, high temperatures and a lack of appropriate calibration procedures. Methodologies for automatic corrections of such errors are presented and described in detail. All approaches are tested on medium to high frequency downhole data from a variety of field data sets.

Commonly observed sensor errors include drifts in accelerometer and strain gauge data. An algorithm described here corrects vibration data for offsets and enables a comparison of vibration levels throughout runs which otherwise would be impacted by such drifts. Strain gauge sensor drift affects weight/torque on bit measurements, which are generally corrected manually. The algorithms proposed here make better corrections than manual procedures by finding the exact instance of neutrality. This can potentially make time-consuming taring procedures in rig operations obsolete. Time alignment of downhole and surface data is another barrier for a comprehensive analysis and is often a source of many errors. Simple but effective methodologies are described that auto-align time-based data sets, even considering latencies due to travel times. In addition, novel data reduction techniques that help to effectively process, display, and analyze high-frequency data are also discussed.

Analysis of downhole data currently requires skills and experience that must be developed in a labor-intensive way from scratch in many organizations. This work summarizes practical experiences and novel scientific insights that can help any engineer to kick-start downhole data analysis. The paper aims to increase transparency and share ideas amongst the drilling community, with the goal of improving drilling performance through downhole data analysis.
Real-Time Drillstring Vibration Characterization Using Machine Learning
Authors: Millan Ekaterina , Ringer Maurice , Boualleg Riadh , Li Denis
Published: February 2019

Downhole shocks and vibrations have been identified by many operators as one of the biggest causes of Non-Productive Time, the most significant factors limiting rate of penetration (ROP) and the leading cause of premature failure of downhole tools. Today most of the existing methods for detection and characterization of downhole dynamics rely on costly downhole sensors integrated in bottom hole assembly (BHA). This paper presents a new technique for detecting and characterizing drillstring shock and vibrations in real-time using solely surface measurements and a machine learning method. Using historical offset well data and simulated well data, this new technique provides a method to build a classifying model that can be used during drilling operations to characterize real-time drilling data. Validation of the new technique on recorded data demonstrates the method’s capability to detect and characterize downhole dynamics such as stick-slip and lateral shocks from surface measurements.
Optimized Cuttings and Slops Management Help Save 250 Days on Six-Well North Sea Program
Authors: Toft Martin , Farr David , Strøm Knut-Are
Published: February 2019

The operator set challenging rate of penetration (ROP) targets on a six-well campaign in the Norwegian Sea, with total depths between 6000 and 7000 m (19,500 to 22,750 ft) and initial targets of 70 m/h (17.5-in. interval) and 120 m/h (12.25-in. interval). To support these ROPs, the cuttings and slops management system should provide higher conveyance and storage capacities than typically observed during drilling operations. When specified ROPs were achieved, targeted rates increased on subsequent wells.

Collaboration among the operator, rig crews, and service provider was important to operating the high-volume cuttings management system. Adequate transfer and storage capabilities were essential on both the rig and vessels delivering waste to shore for disposal. The final configuration included the following components:2 × 16-in. Conveyors, each feeding 2 pneumatic cuttings collection/transfer units11 High-capacity, nonplugging storage tanks1 Flexible hard-pipe system for simultaneous transfer to/from storage tanks2 Cuttings transfer hoses for simultaneous discharge to vessel1 Modular slop treatment unitCuttings transport tanks on the vessel

On the final well, ROP targets increased to 130 (17.5-in.) and 230 m/h (12.25-in.). Operating at 80 to 90% capacity, the system managed up to 60 mT of cuttings per hour. A total of 8959 m3 slops was treated, resulting in the overboard discharge of 8769 m3 treated water (oil-in-water concentration was 11.9 ppm), and waste volume sent to shore was reduced by 98%. The drilling program was completed 250 days faster than planned, and wells were delivered for production one year earlier than planned. The reduced time allowed the operator to drill a seventh well within the timeframe allotted for the original six-well program. Achievements of the seventh well continue to exceed expectations.

Close collaboration between the operator and personnel in the service company’s integrated rig team made this possible. Equipment operators continually optimized the process and delivered a high level of adaptability while ROP targets increased. This project set new standards for drilling performance on the Norwegian continental shelf.
Data Quality at the Rigsite - Automated System to Zero Bit Weight and Differential Pressure
Authors: Borjas Ricardo , Creegan Andrew , Perdomo Angel , Shults Derrick
Published: February 2019

Surface sensor data quality at the rig site has been the topic of much discussion in the industry as the information is increasingly used for the optimization of rig activities, planning, and modeling. While a great portion of data quality relies on sensor calibration and maintenance, a few measurements require human input, such as surface weight on bit and differential pressure. The objective of this paper is to describe an automated system integrated in the Electronic Drilling Recorder (EDR) that tares the weight on bit and differential pressure readings based on rig activity.

The system utilizes high-frequency surface sensor data from the hook load, pump pressure, string rotation, mud flow in, and block position to determine the appropriate rig activity to tare both parameters. The system can be activated at any time by the driller at the rig site, real time center engineers, drilling engineers, drilling analysts, and any others with access to it remotely. After the process is done an automated note is placed on the EDR for traceability.

The result of the implementation of the system is improved data quality on the EDR that is used for real time monitoring, optimization, modeling, planning, and an ultimate improvement in the quality of the well's data archives.

Automating data sensitive work flows at the rig site, improves data consistency, quality, and frees the driller's attention to more important work flows.