bluuebunny/crossref_metadata_2025 huggingface dataset:
What, If, and When to Move: Basal Ganglia Circuits and Self-Paced Action Initiation
Authors: Klaus Andreas , Alves da Silva Joaquim , Costa Rui M.
Published: April 2019

Deciding what to do and when to move is vital to our survival. Clinical and fundamental studies have identified basal ganglia circuits as critical for this process. The main input nucleus of the basal ganglia, the striatum, receives inputs from frontal, sensory, and motor cortices and interconnected thalamic areas that provide information about potential goals, context, and actions and directly or indirectly modulates basal ganglia outputs. The striatum also receives dopaminergic inputs that can signal reward prediction errors and also behavioral transitions and movement initiation. Here we review studies and models of how direct and indirect pathways can modulate basal ganglia outputs to facilitate movement initiation, and we discuss the role of cortical and dopaminergic inputs to the striatum in determining what to do and if and when to do it. Complex but exciting scenarios emerge that shed new light on how basal ganglia circuits modulate self-paced movement initiation.
Divergent Destinies: Children of Immigrants Growing Up in the United States
Authors: Zhou Min , Gonzales Roberto G.
Published: April 2019

More than a quarter century of research has generated fruitful results and new insights into the understanding of the lived experiences of the new second generation, which broadly includes both native-born and foreign-born children of immigrant parentage. We critically review the burgeoning literature on the divergent trajectories and unequal outcomes of this new second generation. Given recent changes in immigration policy and in contexts of both exit and reception for new immigrants, we pay special attention to the significance of selectivity and immigration status. We begin by revisiting the canonical literature on assimilation and presenting the original formulation of the segmented assimilation theory as a critique. We then assess the impressive body of empirical research and discuss alternative concepts, models, and paradigms. We conclude our review by discussing the implications for future research on the children of immigrants.
Laboratory Study on a New Composite Plugging Material with High Bearing Strength and High-Temperature Resistance
Authors: Su Xiaoming , Lian Zhanghua , Xiong Hanqiao , Yuan Yuan , Fang Junwei
Published: April 2019

The reservoir in the Central Tarim Basin is a typical high-pressure fracture-vuggy carbonate reservoir with high temperatures, which easily leads to drilling fluid losses and the high-temperature carbonate. The conventional lost circulation materials (LCMs) cannot meet the reservoir. To resolve this problem, a rigid particle with high-temperature resistance, high acid solubility, and high rigidity was developed, tested, and evaluated. According to bridge rules of 1/2–2/3 opening degree of formation fracture, the formulation experiments of GZD and other lost circulation materials were conducted and a novel composite lost circulation material (LCM) was completed. Lastly, we investigated the compatibility of LCM and mud in site though compatibility experiment, analyzed the plugging effect of the system for fracture and vuggy by laboratory static lost circulation simulation and evaluation and sand-bed plugging experiments, respectively. The results show that compared with the conventional rigid lost material, the value of high-temperature resistance is more and acid solubility is over 98%. Also, it can work well with other fiber materials (E), variable filling particles (F and G), and superfine filling particles (H) and form a novel plugging material, named MGY-I, whose temperature resistance value is more than 473.15 K, the bearing strength is over than 9 MPa, the mud filtrate invasion depth of sand bed made from coarse particles (10∼20 mesh) is only 3.0 cm within 30 minutes, and the invasion depth is less than 1 cm within 30 minutes when the sand bed is made from 80∼100 mesh. The optimal concentrations of rigid granule, lignin fiber, elastic particle, and superfine calcium carbonate are 8% (A : B : CD = 2 : 1 : 1), 0.5%, 6%, and 1%, respectively. And, the plugging function of “GZD-rigidity bridge and filling, fiber network and deformable filing” is better exerted on the formation fracture with a high loading capacity and a high-temperature resistance.
Nonlinear Resonance Interaction between Conjugate Circumferential Flexural Modes in Single‐Walled Carbon Nanotubes
Authors: Strozzi Matteo , Pellicano Francesco
Published: April 2019

This paper presents an investigation on the dynamical properties of single‐walled carbon nanotubes (SWCNTs), and nonlinear modal interaction and energy exchange are analysed in detail. Resonance interactions between two conjugate circumferential flexural modes (CFMs) are investigated. The nanotubes are analysed through a continuous shell model, and a thin shell theory is used to model the dynamics of the system; free‐free boundary conditions are considered. The Rayleigh–Ritz method is applied to approximate linear eigenfunctions of the partial differential equations that govern the shell dynamics. An energy approach, based on Lagrange equations and series expansion of the displacements, is considered to reduce the initial partial differential equations to a set of nonlinear ordinary differential equations of motion. The model is validated in linear field (natural frequencies) by means of comparisons with literature. A convergence analysis is carried out in order to obtain the smallest modal expansion able to simulate the nonlinear regimes. The time evolution of the nonlinear energy distribution over the SWCNT surface is studied. The nonlinear dynamics of the system is analysed by means of phase portraits. The resonance interaction and energy transfer between the conjugate CFMs are investigated. A travelling wave moving along the circumferential direction of the SWCNT is observed.
Piperacillin/Tazobactam as Cause of Acute Generalized Exanthematous Pustulosis
Authors: Kyriakou Aikaterini , Zagalioti Sofia-Chrysovalantou , Patsatsi Aikaterini , Galanis Nikiforos , Lazaridou Elizabeth
Published: April 2019

Acute generalized exanthematous pustulosis (AGEP) is a rare cutaneous adverse reaction mainly attributed to antibiotics. It is characterized by numerous, nonfollicular, sterile pustules, arising on an exanthematous and edematous base. It is a serious adverse reaction accompanied by fever and leukocytosis. Piperacillin/tazobactam is indicated for the treatment of patients with moderate to severe infections. Herein is reported a case of AGEP caused by piperacillin/tazobactam. A 78-year-old woman with metastatic breast cancer was presented to the emergency department reporting fever and groin pain. The laboratory analysis and more specifically urine cultivation showed a urinary tract infection by E. coli with sensitivity to piperacillin/tazobactam. She had no known allergies. She was started on intravenous piperacillin/tazobactam; she improved clinically on the second day, but on the fourth day of intravenous therapy, she developed extensive pustular rash on the folds and anterior proximal thighs, accompanied by fever and neutrophilia. Piperacillin/tazobactam administration was interrupted and she was given prednisolone for ten days. The patient improved clinically and her laboratory tests returned to normal after two weeks. AGEP is an uncommon side effect of piperacillin/tazobactam treatment and there are few cases reported.
Effect and Mechanism of Survivin on Hypoxia-Induced Multidrug Resistance of Human Laryngeal Carcinoma Cells
Authors: Xu Dan , Li Da Wei , Xie Jin , Chen Xin Wei
Published: April 2019

This study aimed at clarifying the mechanism and role of survivin in hypoxia-induced multidrug resistance (MDR) of laryngeal carcinoma cells. Human laryngeal cancer cells were incubated under hypoxia or normoxia. The expression of survivin was silenced by performing RNA interference. Additionally, by Western blot and real-time quantitative RT-PCR, survivin expression was detected. The sensitivity of human laryngeal carcinoma cells to multiple drugs was measured by CCK-8 assay. Meanwhile, the apoptosis of cells induced by cisplatin or paclitaxel was assessed by Annexin-V/propidium iodide staining analysis. Under hypoxic conditions, the upregulation of survivin was abolished by RNA interference. Then, CCK-8 analysis demonstrated that the sensitivity to multiple agents of laryngeal carcinoma cells could be increased by inhibiting survivin expression (P<0.05). Moreover, Annexin-V/propidium iodide staining analysis revealed that decreased expression of survivin could evidently increase the apoptosis rate of laryngeal carcinoma cells that were induced by cisplatin or paclitaxel evidently (P<0.05). Our data suggests that hypoxia-elicited survivin may exert a pivotal role in regulating hypoxia-induced MDR of laryngeal cancer cells by preventing the apoptosis of cells induced by chemotherapeutic drug. Thus, blocking survivin expression in human laryngeal carcinoma cells may provide an avenue for gene therapy.
Nanosized Zincated Hydroxyapatite as a Promising Heterogeneous Photo-Fenton-Like Catalyst for Methylene Blue Degradation
Authors: Doan Van Dat , Le Van Thuan , Le Thi Thanh Nhi , Nguyen Hoai Thuong
Published: April 2019

This study is devoted to synthesis of nanosized zincated hydroxyapatite (Zn-HA) and its utilization as a heterogeneous photo-Fenton-like catalyst for degradation of methylene blue (MB) in aqueous solution. The prepared catalyst was characterized by various techniques such as X-ray diffraction, scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray, and Fourier transform infrared spectroscopy. The catalytic activity of Zn-HA towards MB and the effects of various experimental factors such as pH, zinc substitution degrees, initial MB concentration, and H2O2 dosage were studied in detail. The results showed that the zinc substitution degree of 0.4 is optimal to get the highest degradation efficiency under conditions of pH = 10, H2O2 dosage of 0.05 M, and MB concentration of 30 mg/L for a contact time of 120 min. The degradation mechanism was proposed and discussed thoroughly. Besides, the ability of long-term use for the synthesized catalyst was also evaluated.
Adherence to Antiplatelet Therapy after Coronary Intervention among Patients with Myocardial Infarction Attending Vietnam National Heart Institute
Authors: Luu Ngoc Minh , Dinh Anh Tuan , Nguyen Thi Thu Ha , Nguyen Van Huy
Published: April 2019

Adherence to antiplatelet therapy is critical to successful treatment of cardiovascular conditions. However, little has been known about this issue in the context of constrained resources such as in Vietnam. The objective of this study was to examine the adherence to antiplatelet therapy among patients receiving acute myocardial infarction interventions and its associated factors. In a cross-sectional survey design, 175 adult patients revisiting Vietnam National Heart Institute diagnosed with acute myocardial infarction were approached for data collection from October 2014 to June 2015. Adherence to antiplatelet therapy was assessed by asking patients whether they took taking antiplatelet regularly as per medication (do not miss any dose at the specified time) for any type of antiplatelet (aspirin, clopidogrel, ticlopidine...) during the last month before the participants came back to take re-examinations. The results indicated that the adherence to antiplatelet therapy among patients was quite high at 1 month; it begins to decline by 6 months, 12 months, and more than 12 months (less than 1 month was 90.29%; from 1 to 6 months 88.0%, from 6 to 12 months 75.43%, and after 12 months only 46.29% of patients). Multivariable logistic regression was utilized to detect factors associated with the adherence to antiplatelet therapy. It showed that patients with average income per month of $300 or more (OR=2.92, 95% CI=1.24-6.89), distance to the hospital of less than 50km (OR=2.48, 95% CI: 1.12-5.52), taking medicine under doctor’s instructions (OR=3.65; 95% CI=1.13-11.70), and timely re-examination (OR=3.99, 95% CI=1.08-14.73) were more likely to follow the therapy. In general, the study suggested that to increase the likelihood of adherence to antiplatelet therapy it is important to establish a continuous care system after discharging from hospital.
Weighted Morrey Spaces Related to Certain Nonnegative Potentials and Riesz Transforms
Authors: Wang Hua
Published: April 2019

LetL=-Δ+Vbe a Schrödinger operator, whereΔis the Laplacian onRdand the nonnegative potentialVbelongs to the reverse Hölder classRHqforq≥d. The Riesz transform associated with the operatorL=-Δ+Vis denoted byR=∇(-Δ+V)-1/2and the dual Riesz transform is denoted byR⁎=(-Δ+V)-1/2∇. In this paper, we first introduce some kinds of weighted Morrey spaces related to certain nonnegative potentials belonging to the reverse Hölder classRHqforq≥d. Then we will establish the mapping properties of the operatorRand its adjointR⁎on these new spaces. Furthermore, the weighted strong-type estimate and weighted endpoint estimate for the corresponding commutators[b,R]and[b,R⁎]are also obtained. The classes of weights, classes of symbol functions, and weighted Morrey spaces discussed in this paper are larger thanAp,BMO(Rd), andLp,κ(w)corresponding to the classical Riesz transforms (V≡0).
Advanced Esophageal Neoplasm with Subcutaneous Metastasis
Authors: de Oliveira Rivadávio A. M. , da Silva Tassiara , Piovesana Mariana Miyasaki , Stecca Carlos Eduardo , Lopes George A. , Liutti Vitor Teixeira
Published: April 2019

Objective. This report is aimed at describing a rare clinical condition of advanced esophageal cancer with subcutaneous metastasis. Case Report. The present case refers to a patient diagnosed with stage IV esophageal squamous cell carcinoma which started with dysphonia and cervical nodules. Soon after that, the patient developed dysphagia and subcutaneous lesions on the right flank. Later in time, we documented a disease progression, with worsening of subcutaneous implants, lymph node, bone, and pulmonary metastases in addition to malignant hypercalcemia. Conclusion. This illustrates a rare presentation of an advanced esophageal neoplasm. Subcutaneous metastasis from internal malignancies is unusual, corresponding to less than 10% of cases. Its occurrence in patients with esophageal cancer is even less common with very few cases reported in literature.
Field Tests on the Attenuation Characteristics of the Blast Air Waves in a Long Road Tunnel: A Case Study
Authors: Fang Yong , Zou Yi-Lun , Zhou Jian , Yao Zhi-gang , Lei Shuai , Yang Wenbo
Published: April 2019

After an explosion occurs in a tunnel, the blast waves take on diverse forms of attenuation in different regions when it propagates along the tunnel. However, the prediction of the overpressure decay laws proposed in previous studies has not taken into account the influence of the different regions in the tunnel. The present paper uses the example of the Micangshan highway tunnel in China and considers many factors that influence the propagation of the blast waves by dividing the tunnel into four zones. The paper modifies the decay equation proposed by Smith and applies it to the Micangshan highway tunnel in China. The decay equations are different in different zones. Field tests in this tunnel show that the modified equation is more suitable to describe the attenuation of the blast waves in the tunnel than the original equation.
A Recurrent Activating Missense Mutation in Waldenström Macroglobulinemia Affects the DNA Binding of the ETS Transcription Factor SPI1 and Enhances Proliferation
Authors: Roos-Weil Damien , Decaudin Camille , Armand Marine , Della-Valle Véronique , Diop M'boyba K. , Ghamlouch Hussein , Ropars Virginie , Hérate Cécile , Lara Diane , Durot Eric , Haddad Rima , Mylonas Elena , Damm Frederik , Pflumio Francoise , Stoilova Bilyana , Metzner Marlen , Elemento Olivier , Dessen Philippe , Camara-Clayette Valérie , Cosset François-Loïc , Verhoeyen Els , Leblond Véronique , Ribrag Vincent , Cornillet-Lefebvre Pascale , Rameau Philippe , Azar Nabih , Charlotte Frédéric , Morel Pierre , Charbonnier Jean-Baptiste , Vyas Paresh , Mercher Thomas , Aoufouchi Said , Droin Nathalie , Guillouf Christel , Nguyen-Khac Florence , Bernard Olivier A.
Published: April 2019

The ETS-domain transcription factors divide into subfamilies based on protein similarities, DNA-binding sequences, and interaction with cofactors. They are regulated by extracellular clues and contribute to cellular processes, including proliferation and transformation. ETS genes are targeted through genomic rearrangements in oncogenesis. The PU.1/SPI1 gene is inactivated by point mutations in human myeloid malignancies. We identified a recurrent somatic mutation (Q226E) in PU.1/SPI1 in Waldenström macroglobulinemia, a B-cell lymphoproliferative disorder. It affects the DNA-binding affinity of the protein and allows the mutant protein to more frequently bind and activate promoter regions with respect to wild-type protein. Mutant SPI1 binding at promoters activates gene sets typically promoted by other ETS factors, resulting in enhanced proliferation and decreased terminal B-cell differentiation in model cell lines and primary samples. In summary, we describe oncogenic subversion of transcription factor function through subtle alteration of DNA binding leading to cellular proliferation and differentiation arrest.

Significance:

The demonstration that a somatic point mutation tips the balance of genome-binding pattern provides a mechanistic paradigm for how missense mutations in transcription factor genes may be oncogenic in human tumors.

This article is highlighted in the In This Issue feature, p. 681
Different Psychosocial Factors Are Associated with Seasonal and Perennial Allergies in Adults: Cross-Sectional Results of the KORA FF4 Study
Authors: Harter Katharina , Hammel Gertrud , Krabiell Lisa , Linkohr Birgit , Peters Annette , Schwettmann Lars , Ring Johannes , Johar Hamimatunnisa , Ladwig Karl-Heinz , Traidl-Hoffmann Claudia
Published: April 2019

Background: Psychosocial factors are supposed to play a central role in the development of allergic diseases. Associations with seasonal and perennial forms of allergies have not been investigated, yet. Objectives: The aim of the study was to investigate the associations of psychosocial factors (social status, depression, generalized anxiety, psychosocial stress, Type-D personality) with seasonal, perennial, and other forms of allergies in adults. Method: The analysis of self-reported data of the KORA FF4 study was performed with SAS 9.4. The sample consisted of 1,782 study participants in the study region of Augsburg (39–88 years, 61 years, 51.1% female). Descriptive bivariate statistics and multinomial logistic regression models were performed. Age, sex, family predisposition, and smoking status were considered possible confounders. Moreover, several sensitivity analyses were carried out to check whether missing values distorted the results. Results: A positive association between generalized anxiety and seasonal allergies was found in the multivariate model. Depression was positively, and anxiety negatively, associated with perennial allergies. No association between the analyzed psychosocial factors and other forms of allergies could be found. Conclusion: The results support the relevance of psychosocial factors in association with allergies. Looking at the psychosocial factors, a separate consideration of seasonal and perennial allergies seems reasonable. Further longitudinal studies should investigate the direction of the associations, the underlying mechanisms, and other psychosocial factors, such as coping mechanisms, in confirmed allergies.
Side Effects of Frequently Used Antihypertensive Drugs on Wound Healing in vitro
Authors: Stuermer Ewa Klara , Besser Manuela , Terberger Nils , Bachmann Hagen Sjard , Severing Anna-Lena
Published: April 2019

Background: The number of patients who has a daily intake of antihypertensive drugs is rising, due to an also rising prevalence of lifestyle diseases. Interestingly, knowledge about effects of these drugs in terms of wound healing is low. Objective: Based on a few differing studies, the idea arose that antihypertensives may have side effects on wound healing. Methods: Five antihypertensive drugs from different substance classes (metoprolol, amlodipine, ramipril, hydrochlorothiazide, candesartan) were investigated, in terms of possible impacts on cell metabolism and migration of human skin fibroblasts and keratinocytes. Additionally, histological and immunohistochemical analyses were performed in a 3-dimensional (3D) wound model addressing the influence on regeneration processes, such as cell migration, metabolic activity, apoptosis and epidermal thickness. Results: Hydrochlorothiazide and ramipril exerted inhibiting effects in nearly all analyses, interestingly, in serum equivalent doses. In contrast, candesartan and amlodipine induced slight positive effects in 2D as well as in 3D models. The previously described positive effects of β-blockers could only partially be confirmed by metoprolol. Antihypertensive drugs affected fibroblasts more than keratinocytes – whether positively or negatively. Conclusion: Antihypertensive drugs have an influence on keratinocytes and fibroblasts; they are not neutral. Candesartan has the most positive effects on skin cells. For angiotensin-converting enzyme inhibitors and thiazide diuretics, wound healing in a 3D model is delayed. β-Receptor blockers seem to improve wound healing to a small extent just like calcium channel blockers. These results should be evaluated in a clinical trial to verify their clinical relevance.
Levels of Geometrical Thinking of Students Receiving Blended Learning in Jordan
Authors: Altakhyneh Bahjat Hamid
Published: April 2019

The study aimed at investigating the levels of geometrical thinking among students receiving blended learning in Jordan. The study sample consisted of (104) students / teachers of open education systems in Jordan for the2015 -2016 academic year. In order to answer the questions of study, the researcher developed a scale of geometric thinking, it is validity and reliability has been verified. The results of the study showed a low level of geometrical thinking among students receiving blended learning. The percentage of students in the first level (visual) (51%), the percentage of students in the second level (descriptive) (15%), and the percentage of students in the third level (logical) (3%). Also it showed differences in the levels of geometric thinking between males and females in favor of males, as well as differences in the level of geometrical thinking between students from the scientific stream and students from the literary stream in favor of scientific stream. In the light of the results of the study, the researcher recommends that pre-service teachers should be trained on programs contains geometrical thinking at open learning universities.
ICT Competencies among School Teachers: A Review of Literature
Authors: Wong Ai Yieng , Daud Khadijah
Published: April 2019

The rapid development of information and communication technology (ICT) in education has attract the interest of the Malaysia's Ministry of Education. Ministry aims to have all teachers received ICT training and to integrate ICT in teaching and learning in the classroom. Teachers as the driving force for ICT literate society must prepare themselves with knowledge and skills in ICT. Different competency among teacher in mastering the skills and knowledge of ICT requires a benchmark to help them to know their personal ability. National Educational Technology Standards for Teachers (NETS-T) recommended by the International Society for Technology in Education (ISTE) is a benchmark that can support and enhance teaching and learning in education. This paper attempts to examine the relevant literature review of ICT competency of teachers in the country and abroad. Teachers who successfully meet NETS-T should be a guide to others while any criticism should make changes for the better.
Profile Analysis of Students’ Concept Understanding on Heat and Temperature
Authors: Sukarmin Sukarmin , Ratnasari Dewi , Suparmi Suparmi
Published: April 2019

This research is aimed to know students’ concept understanding profile on heat and temperature. This research is descriptive research using a qualitative approach. Subjects of this research are 10th-grade students in Surakarta in the academic year of 2016/ 2017. They represent high, medium, and low categorized school. Subject selection is based on the average score of physics at the latest four years. This research uses the question of extended response test through essay question. Before having given to the subjects, essay questions are validated by the experts. Based on the research result and the data analysis, students’ concept understanding on heat and temperature as follows: (1) The average percentage of students’ concept understanding at high categorized school is 60,66%, at medium categorized school is 51,47%, and at low categorized school is 48,83%, (2) Most students have misconception on basic concept of heat and temperature such as heat capacity, thermal conductivity, and expansion concept.
Study Motivation, Academic Performance and Commitment Career in Accounting Profession
Authors: Handoyo Sofik
Published: April 2019

The purpose of this study is to understand the relationship between students' motivation, academic performance, and career commitment on accounting profession among undergraduate accounting students. The background of this study is based on the phenomenon encountered by accounting undergraduate students whose academic performance is not satisfactory as well as problems related to the completion of the study and high turn-over of the accounting profession. The sample of the study involved 101 undergraduate accounting students of Universitas Padjadjaran. There are three independent variables investigated in this study namely study motivation, academic performance and commitment carrier in the accounting profession. Intrinsic interest, extrinsic interest, normative beliefs and conflict anticipation were treated as sub-variables of the study motivation. Data were obtained through an electronic questionnaire using Google Form platform. Descriptive analysis along with bivariate correlation analysis was applied in this study. The results indicate that majority of accounting undergraduate student choosing accounting study program due to intrinsic interest motivation and extrinsic interest motivation and there is no indication motivation influenced by normative beliefs motivation and conflict anticipation motivation. Intrinsic interest has a positive and significant correlation with academic performance (r=2.17, p0.01) and academic performance has a positive correlation (r = 0.124) with commitment carrier in the accounting profession.
Developing a Learning Model to Promote the Skills of Analytical Thinking
Authors: Nuroso Harto , Siswanto Joko , Huda Choirul
Published: April 2019

This research is aimed at developing a learning model that encourages the skills of analytical thinking in science. The method used is research and development. The result is the ICAE (Incubation, Collection of data, Analysis, and Evaluation) model that promotes analytical thinking skills. Results of normalized gain tests show that the gain score is 0.28, which indicates that the ICAE learning model positively affects students’ analytical thinking, even though still within the lower category. The ICAE model also promotes the skills of analytical thinking in science and it has gained positive response from students.
Students’ Access to and Perception of Using Mobile Technologies in the Classroom: the Potential and Challenges of Implementing Mobile Learning
Authors: Hanif Muhammad , Asrowi Asrowi , Sunardi Sunardi
Published: April 2019

In implementing mobile learning system, students’ needs and perceptions should be focused upon along with curriculum standards. Particularly in the context of higher education institutions in Indonesia, some schools authorities have refused to implement m-learning. Although m-learning is widely used in some schools and considered an effective educational tool, it is not yet fully utilised in most Indonesian schools. Therefore, the aim of this study is to investigate students’ access to and perception of the use of mobile devices in learning, and to understand the potential for its implementation. This study is the result of a survey conducted on 61 students in a school which banned the use of mobile technology. It seeks to understand their potential accessibility by means of ownership, interaction time and the types of mobile application used and to find their perceptions through agreement and the reasons for adopting mobile learning in the classroom. The findings indicate that students are very familiar with mobile devices and their applications. The results also reveal that students have positive perceptions toward m-learning, and indicate that mobile technologies are widely used among them. This report can be taken as the basis for applying a mobile learning system in the classroom.
Integrating Sangiran Early Man Site Museum to Project-Based Learning in Science Course: The-Earth Materials
Authors: Liskasari Rindi , Soeparmi Soeparmi , Karyanto Puguh
Published: April 2019

The purpose of this study is to explain the benefits of integrating Sangiran Early Man Site Museum and Project-based Learning in The-Earth Material in Science. Twenty-eight seventh grade Junior High School students in Karanganyar, Central Java follow this course in the second semester in the academic year of 2016/2017. The students work in teams to do the project based on their observation and analysis on the phenomena in Sangiran. The researchers use a mixed method research approach to analyze this research by using questionnaire and interview to obtain data on students’ responses to the course. The conclusions of our study are: 1) this course is successful in developing of research skills, teamwork and group discussions; 2) students are not accustomed to learn independently and to learn by using scientific approach; 3) students faces difficulties in making project report and in doing presentation. 4) Project-based-learning can be used as a media to help the students to know about local wisdom in their motherland
Needs analysis on Indonesian language learning materials about agriculture for foreign speakers
Authors: Usmansyah Defina , Rasyid Yumna , Ridwan Sakura
Published: April 2019

The aim of this research was to analyze the needs on integrative content-based Indonesian language learning materials about agriculture for foreign speakers A2 level. Research and development design was used employing the Dick and Carey’s model combined with Borg and Gall’s model, as well as the model of learning materials development proposed by Tomlinson, Brown, and Jolly and Bolitho. This research was conducted at Indonesian for foreign speakers, Bogor Agricultural University program  (BIPA IPB) on academic year 2015-2017. The procedure comprised: pre-study, students’ and teachers’ needs analysis on teaching materials at BIPA IPB. The findings indicated that the teaching materials about agriculture are not available yet at IPB. Besides, the needs on integrative content-based Indonesian language learning materials about agriculture for students at A2 level and the teachers were indicated high.
The reinforcement of craft and entrepreneurship education in senior high schools
Authors: Sugiono Sugiono , Martono Trisno , Wardani Dewi Kusuma
Published: April 2019

This research aimed to find out the constraints occurring in the implementation of craft and entrepreneurship education. This research employed qualitative research method. The research was taken place in three schools in DKI Jakarta as the beneficiaries of entrepreneurship program grant from the government. Data was collected through interview and observation. The result of research showed the less optimum implementation of craft and entrepreneurship education. The constraints the teacher encountered in the implementation of Craft and Entrepreneurship subject were: teacher having no background of Entrepreneurship Education, No Subject Teacher Discussion (MGMP) group available and no supporting activity for Craft and Entrepreneurship subject. Therefore, this research recommended the reinforcement of entrepreneurship education learning through establishing MGMP team, teacher training, and sustainable integration of entrepreneurship subject and program.
Non isolated coupled converter tied voltage source inverter drive
Authors: Kumar A. Suresh , Pongiannan R. K. , Bharatiraja C , Yusuff Adedayo , Yadaiah N
Published: April 2019

The voltage source inverters (VSI) are ever required section in the AC motor drive and power system interface. The electrical drive segment, the VSI based drives are unavoidable and they are closely operated with induction motor, permanent magnate synchronous motor and BLDC motor. These drives are normally needed high torque-power characters. Hence, the input DC-link side voltage is increased with help of increasing input AC in the rectifier input. However, this causes the power quality disturbance in the AC main and DC-link. In order to go for a increasing the AC voltage, the rectifier out is connected with DC to DC boost converter and they are increasing the DC voltage to meet out the drive DC-link voltage demand. With this aim, the paper proposes the idea to connect high step non-isolated high gain coupled DC to DC converter with three phase VSI for drives applications. The proposed converter has an ability to increase the voltage five times and the counter winding arrangement ratio of the converter is help for the further increase of gain. Inn this interface the front end DC to DC converters inductors are charged by making the short circuit with inverter switching. The converter voltage gain is controlled by shoot through of the VSI switch (converter gain directly proportional to inverter shoot through). The proposed converter has a higher degree of freedom in their values of winding and output voltage. Hence, the DC-link voltage of the inverter can be extended in any level. The operation principle and modes of the proposed DC to DC Source tied VSI is analyzed and simulated using MATLAB-Simulink software simulation.  The laboratory based small scale power circuit is developed with help of control algorithm. The entire implementation is done through PIC microcontroller platform. The deign Investigation, system simulation and experimentation confirming the proposed DC to DC converter tied VSI drive system.
An improved model of hybrid multi converter used for grid connected applications
Authors: Priya E. Catherine Amala , Rajan G. T. Sundar
Published: April 2019

A Hybrid multi converter topology is proposed in this paper, which supplies simultaneous voltage’s for various levels from Renewable energy source. The proposed topology is realized by replacing Multi cuk- buck converter topology. The resultant hybrid multi converter requires less number of switches to operate, as well as various output voltages of different levels without interruption with increased stability. This type of hybrid multi converter with high reliability and high stability are well implemented for loads utilizing various levels of DC voltage. Converter, proposed in this paper is called Hybrid Multi converter topology (HMCT). A study is made on the steady state of the HMCT and a comparative study has been made with the conventional designs. A PI controller based feedback controller is designed to stabilize the various output voltages. A simulated model for the proposed HMCT is used to simulate various output voltages of dissimilar values from mono DC- input. The performance of the converter is demonstrated using simulation model. The proposed design can be protracted to voltage source inverter, multilevel inverter to produce AC output.
Renewable power interface based rural telecom
Authors: Amutha W. Margaret , Andrew H. Caleb , Shajie A. Debie , Paulraj J. Praveen Immanuel
Published: April 2019

To power remote area telecom where grid supplied electricity is unreliable, an alternative exists in the form of renewable energy sources. These sources mainly rely on the weather condition of a particular area for their source of power. To overcome such problem, hybridization of energy sources are prefered. Hybridization of solar-wind systems use a separate converter for each source thus leading to a complex, bulky and less efficient system. This paper presents a single renewable power interface which allows solar and wind  sources to supply the load separately or simultaneously depending on the availability of the energy sources. It uses cuk and sepic converter topologies to form cuk-seic interfece. These systems  also use battery backup to store excess energy and to make best use of their operating characteristics. Performance comparison between a cuk-sepic renewable power interface with and without MPPT using MATLAB/SIMULINK is presented. A detailed componentwise analysis is also done to calculate best efficient interface. It is found that the cuk-sepic interface with MPPT is efficient. A lab level model for cuk-sepic interface is developed and tested. The experimental results proved the effective operation of a single renewable power cuk-sepic interface with MPPT. 
Capacitive power transfer in biomedical implantable device: a review
Authors: Mustapa Muhammad Zaki Bin , Saat Shakir , Yusof Yusmarnita , Shaari Muslimah Meor
Published: April 2019

This paper presents the development of a new design method of capacitive power transfer (CPT) which is based on hybrid concept for Biomedical Implants. This method is able to improve various issues found in the widely used CPT system that is bipolar CPT method. Based on the ability of this purposed, the simulation of the CPT system has been designed to prove an amount of power transferred through a layer of tissue. The design used to validate the suggested model which to powering implanted device, and it was performed with 3cm square plates, which have a layer of beef with the 5mm thickness in between 2 coupling plate. Power signal was generated by Class E zero voltage switching. The Class E zero voltage switching has been designed to generating alternate current with the 1MHz frequency appropriate to the hybrid CPT system specification.
Wind turbine doubly-fed asynchronous machine diagnosis defects using stator and rotor currents lissajous curves
Authors: El Hammouchi Fatima , El Menzhi L. , Saad A. , Ihedrane Y. , Bossoufi B.
Published: April 2019

In the current paper, a method is developed to diagnose potential electrical defects attacking doubly fed induction generator in Moroccan wind turbines firms. The proposed method is based on stator and rotor currents Lissajous curves analysis. Firstly, we focus on modeling of a non-defected wind conversion systems based on mathematic model created in Matlab Simulink which is able to reflect the behaviour of the wind turbine during asynchronous generator defects-free operation. After that, an indirect stator field vector oriented control is applied to obtain the wind system performance. Finally, stator and rotor currents Lissajous curves are analyzed in case of a non-defected generator that represents the system reference curves for diagnosing defects. The simulations had been realized by Matlab Simulink. Their results showed the effectiveness of the proposed method.
Feminidade, maternidade e cuidados profissionais
Authors: Lanjonquière Leandro de
Published: April 2019

Editorial
Curadoria: arte de narrar
Authors: Lourenço Maria Cecília França
Published: April 2019

A Revista ARA FAU USP expõe neste número o esforço integrado entre membros de Conselho Editorial, Grupo Museu/Patrimônio, autores, que se submeteram e foram selecionados por Pareceristas, desta maneira gerando elo bastante singular e composto por estudiosos da área. O tema escolhido para esta edição – Curadoria, Argumento, Fricção – reside em analisar inúmeras experiências e variações, provenientes de distintas fontes. Congregam-se textos inéditos em diálogo com conteúdos controversos neste período, a demandar debates aqui apresentados.
Catastrophic Climate Risk and Brazilian Amazonian Politics and Policies: A New Research Agenda
Authors: Pereira Joana Castro , Viola Eduardo
Published: April 2019

Climate and deforestation impacts are jeopardizing the resilience of the Amazon rainforest, one of the key elements in the Earth’s climate system whose dieback may trigger catastrophic climate change. The potential degree of climate risk that the planet is facing, and current Brazilian Amazonian politics and policies, make it alarmingly conceivable that a tipping point will be crossed that leads to savannization of the forest. However, the social science research community has not yet acknowledged this possibility. A timely revision of the research agenda is needed to address this gap.
Being There: International Negotiations as Study Sites in Global Environmental Politics
Authors: O’Neill Kate , Haas Peter M.
Published: April 2019

This forum traces the emergence of international negotiations as study sites in the field of global environmental politics, from its early days until the present. It sets the scene for the research articles in this special section, outlining why their contributions are timely, and takes advantage of advances in methods and conceptual analysis. The articles in this special section suggest the value of direct observation and ethnography in driving conceptual innovation and understanding how power and influence are exercised in such settings (including by the traditionally powerless). In doing so, they encourage debate over and offer new insights into processes the GEP field has been studying for close to fifty years.
Sueria laxinervis, a new fossil species of Cycadales from the Upper Cretaceous Quiriquina Formation in Cocholgüe, Bíobío Region, Chile
Authors: YAMADA TOSHIHIRO , YAMADA TAKAE F. , TERADA KAZUO , OHSAWA TAKESHI A. , YABE ATSUSHI , LEGRAND JULIEN , UEMURA KAZUHIKO , LEPPE MARCELO , HINOJOSA LUIS FELIPE , LÓPEZ-SEPÚLVEDA PATRICIO , NISHIDA HARUFUMI
Published: April 2019

A new fossil cycad species, Sueria laxinervis, is described from the Upper Cretaceous (Maastrichtian) Quiriquina Formation in Cocholgüe, Bíobío Region, Chile. The generic assignment is supported by the taeniopterid-type leaf with haplocheilic stomata and sinuate anticlinal walls of leaf epidermal cells, while S. laxinervis clearly differs from the other two described Sueria species in its sparse veins and large epidermal cells. The vascular bundles of the midrib are arranged in an inverted-omega shape, supporting the placement of Sueria in Cycadales.
A new dasyurid marsupial from eastern Queensland, Australia: the Buff-footed Antechinus, Antechinus mysticus sp. nov. (Marsupialia: Dasyuridae)
Authors: BAKER ANDREW M , MUTTON THOMAS Y , VAN DYCK STEVE
Published: April 2019

Antechinus mysticus sp. nov. occurs in coastal Australia, ranging from just north of the Queensland (Qld)/New SouthWales (NSW) border to Mackay (mid-east Qld), and is sympatric with A. flavipes (Waterhouse) and A. subtropicus VanDyck & Crowther in south-east Qld. The new species can be distinguished in the field, having paler feet and tail base thanA. flavipes and a greyish head that merges to buff-yellow on the rump and flanks, compared with the more uniform brownhead and body of A. subtropicus and A. stuartii Macleay. Features of the dentary can also be used for identification: A.mysticus differs from A. flavipes in having smaller molar teeth, from A. subtropicus in having a larger gap between frontand rear palatal vacuities, and from A. stuartii in having a generally broader snout. Here, we present a morphologicalanalysis of the new species in comparison with every member of the genus, including a discussion of genetic structure andbroader evolutionary trends, as well as an identification key to species based on dental characters. It seems likely that theknown geographic range of A. mysticus will expand as taxonomic focus on the genus is concentrated in south-east Queensland and north-east New South Wales.
Erratum: HO, GEORGE WAI-CHUN (2012) Notes on the genera Sinophasma Günther, 1940 and Pachyscia Redtenbacher, 1908 (Phasmatodea: Diapheromeridae: Necrosciinae), with the description of four new species from China. Zootaxa, 3495, 57–72.
Authors: HO GEORGE WAI-CHUN
Published: April 2019

(Erratum)
Review of Neuroleon Navás of West Africa with descriptions of four new species (Neuroptera, Myrmeleontidae)
Authors: MICHEL BRUNO , AKOUDJIN MASSOUROUDINI
Published: April 2019

The Neuroleon species of sub-Saharan West Africa are reviewed. Eight species are recorded: N. drosimus Navás, N. lapidarius nov. sp., N. modestus (Navás), N. nubilatus (Navás), N. rapax nov. sp., N. raptor nov. sp., N. pardalice (Banks), and N. ruber nov. sp. A ninth species, N. nigericus Navás, of which no specimens could be examined, is tentatively maintained in the genus Neuroleon pending examination of the type. Three new synonymies are established. Seven species are removed from the genus Neuroleon. N. pardalice is recorded from the region for the first time. The species are illustrated and keyed.
Nine new species of Neotropical spittlebugs (Hemiptera: Cercopidae: Ischnorhininae)
Authors: PALADINI ANDRESSA , CRYAN JASON R.
Published: April 2019

Nine new species of Neotropical spittlebugs (Hemiptera: Cercopidae: Ischnorhininae) are described and illustrated in the genera Catrimania (C. albifascia sp. n. with type locality in French Guiana, and C. livida sp. n. with type locality in Costa Rica), Ischnorhina (I. amazonica sp. n. with type locality in Brazil, and I. hamiltoni sp. n. with type locality in French Guiana), Maxantonia (M. mimica sp. n. with type locality in Peru), Vorago (V. thompsoni sp. n. with type locality in Ecuador), and Zuata (Z. carvalhoi sp. n. with type locality in Ecuador, Z. pecki sp. n. with type locality in Colombia, and Z. tigrina sp. n. with type locality in Bolivia).
A new species of Pseudopaludicola Miranda-Ribeiro, 1926 (Anura: Leiuperidae) from the state of Mato Grosso, Brazil, with comments on the geographic distribution of Pseudopaludicola canga Giaretta & Kokubum, 2003
Authors: PANSONATO ANDRÉ , MORAIS DRÁUSIO H. , ÁVILA ROBSON W. , KAWASHITA-RIBEIRO RICARDO A. , STRÜSSMANN CHRISTINE , MARTINS ITAMAR A.
Published: April 2019

A new species of Pseudopaludicola is described from the state of Mato Grosso, western Brazil. The new species inhabitsthe transition zone between Brazilian Cerrado and Amazon rainforest in northern Mato Grosso, and is characterized by itsmedium size (snout-vent length 12–17 mm), lack of T-shaped terminal phalanges, toe tips not expanded laterally, presenceof two antebrachial tubercles, and smooth upper eyelids. The advertisement call of the new species consists of a seriescomposed of 11–74 non-pulsed notes. Mean dominant frequency is 3938 Hz. Each note presents a slight ascendantfrequency modulation in its first half, and another ascendant modulation in its last half. We also present new data on the distribution and conservation status of Pseudopaludicola canga.
Redescription and notes on the reproductive biology of the sea anemone Urticina fecunda (Verrill, 1899), comb. nov. (Cnidaria: Actiniaria: Actiniidae)
Authors: LARSON PAUL G. , HAMEL JEAN-FRANÇOIS , MERCIER ANNIE
Published: April 2019

The externally brooding sea anemone Epiactis fecunda (Verrill, 1899) is redescribed as Urticina fecunda, comb. nov., onthe basis of preserved type material and anatomical and behavioural observations of recently collected animals. The sea-sonal timing of reproduction and aspects of the settlement and development of brooded offspring are reported. Preciselocality data extend the bathymetric range to waters as shallow as 10 m, and the geographical range east to the AvalonPeninsula (Newfoundland, Canada). We differentiate it from other known northern, externally brooding species of seaanemone. Morphological characters, including verrucae, decamerous mesenterial arrangement, and non-overlapping sizesof basitrichs in tentacles and actinopharynx, agree with a generic diagnosis of Urticina Ehrenberg, 1834 rather than Epiactis Verrill, 1869.