bluuebunny/crossref_metadata_2025 huggingface dataset:
Optimization of Single Phase fed three phase VFD using ANN
Authors:   Department of EEE, Koneru Lakshmaiah Education Foundation, Vaddeswaram, India., Mudundi* Rekha , Kumar Malligunta Kiran ,   Department of EEE, Koneru Lakshmaiah Education Foundation, Vaddeswaram, India.
Published: November 2019

Several applications in rural areas necessitates the use of single phase fed three-phase VFD’s which need to consider certain constraints. These constraints are usually addressed by strictly de-rating the VFD considering only the DC bus voltage ripple. The other constraints like peak currents of the input diode bridge rectifier and beyond current rating of input terminal blocks in addition voltage ripple across the DC bus capacitor need to be considered for a finest performance of VFD which confines the output power capability to the single-phase rated value of the VFD. A novel motor q-axis current with ANN algorithm is introduced to overcome this problem which takes in to account of all the component stresses which need to be addressed. The simulation for the proposed model is done in MATLAB/Simulink environment. The analysis of average and ripple current controller of motor q-axis current and DC bus ripple voltage is done using the proposed methods.
A Research on the Importance of Big Data Analytics in Health Care and Government Sectors
Authors:   Assistant Professor, Department of CSE, PACE Institute of Technology & Sciences, Ongole, India., Kumar* Sindhe Phani , Bolla Sreenivasulu ,   Assistant Professor, Department of CSE, PACE Institute of Technology & Sciences, Ongole, India., Anandan R. ,   Professor, Department of CSE, VELS Institute of Science Technology & Advanced Studies, Chennai
Published: November 2019

This paper provides associate insight into but, we are able to uncover further worth from the information produced by health care and govt. associate oversized quantity of varied info is produced by these sectors. However, whereas not correct info analytics ways, this info became of no use. Big Data Analytics victimization Hadoop plays an honest responsibility in enjoying important purpose analysis of the big volume of knowledge and prepared to guess the pressing state of affairs things prior to that happens. It explains the Big Data use-cases in health care and govt. sectors.
Service Quality Measurement of Antivirus Software Industry by using Servqual Model
Authors:   Assistant Professor-Marketing, Pune Institute of Business Management (PIBM), Pune,India., Kate Dr. Nilesh , More Mahendra ,   Assistant Professor-Marketing, Pune Institute of Business Management (PIBM), Pune,India.
Published: November 2019

The Quality of Service in Antivirus-Software Industry is an important factor for successful Business. This Paper Studies the Antivirus-Software Users from the IT industry, Educational institutions, Manufacture sector industry for understanding the genesis of service quality and potential gaps in service quality. The objectives of the study to find out Major Service quality attributes or dimension using SERVQUAL Model. A better understanding of consumer will give the Antivirus software providing companies an opportunity to improve the quality of service and to gain the competitive advantage.
CLINICAL PROFILE OF PLANTAR FASCIITIS: A
TERTIARY CARE CENTER STUDY
Authors: Sharma Deepak Kumar , Badhal Suman , Wadhwa R. K. , Laisram Nonica , Kanaujia Vinay
Published: November 2019

BACKGROUND: Plantar fasciitis is a degenerative tissue condition with symptom of heel pain. Treatment includes
patient education,NSAIDS,localinjections,surgery& footwear modification alternative therapy.Aim &Objective:To study
the clinical profile of plantar fasciitis patients. Methods:Prospective cross- sectional studywith 40 diagnosed unilateral
or bilateral plantar fasciitis patients satisfied inclusion and exclusion criteria attendedthe PMR opdof VMMC &
Safdarjung hospital were enrolled .Detailed history and clinical examination done.Results:Patients mean age group was
36.92 ± 7.99 years among them60% females&40% were males also involvement of left side is more 60% & right side 40%,
the occupation profiles are 35% homemakers, 35% professionals, 17.50% laborer &12.50% were students Conclusion:
Female homemakers and professionals of age group 31-40 years were mostly affected with dominancy of left heel.
THE EVALUATION OF PERFORMANCE FOR A MASS-MIMO SYSTEM WITH THE STSK SCHEME OVER 3-D FADING CHANNEL
Authors: Zong Chen Joy Iong-
Published: November 2019

The evaluation to the performance of bit error rate (BER) for an massive multi-input multi-output (M-MIMO) system with spatial time shift keying (STSK) scheme over three-dimensions (3-D) fading model is proposed in this article. The long-term evaluation advanced (LTE-A) or 5th generation (5G) M-MIMO radio system is deployed with beamforming techniques over 3-D environment that contains the correlation phenomenon between angle of arrival (AoA) and angle of departure (AoD). Moreover, the determination of moment generating function (MGF) and characteristic function (CF) approaches is applied to derive analytical expression of BER for 3-D M-MIMO in order to avoid some difficult steps. Besides, the channel capacity is presented by using of mutual information to confirm the accuracy of the theoretically derived formulas. Furthermore, the work of performance evaluation is with different numbers of transmitter and receiver antennas. The correlation parameter between AoA and AoD definitely generates impact on the performance of BER when consider an M-MIMO system over the fading model and beamforming transmission.
IOT BASED MULTI-HOMING APPLICATIONS - A REVIEW
Authors: Raj Krishna , S Smys
Published: November 2019

With the ever increasing research in communication technology, smart systems and gadgets are emerging at a very fast pace. A recent trend is the research in internet of things (IoT) which facilitates access of information and services at any point of time around the globe thus elevating the process of digitization to a new era. Multi homing is a concept which facilitates connection of a user over multiple networks. These networks may be heterogeneous or homogeneous. This concept of multihoming acts as a strong backbone to wireless sensor networks where routing of information over the links and channels is quite a critical process. The routing of information from source to destination defines the overall accuracy of the entire wireless network. This efficiency largely dictated by an efficient routing process is influenced by many factors which include node efficiency, node lifetime, and the characteristics of the link between the nodes.
QOS ANALYSIS OF WIRELESS NETWORKS BASED ON LOW MOBILITY PROTOCOL
Authors: V Bindhu
Published: November 2019

The decision on the possible trails to be taken by an information that is to be transmitted from a data point to its destined point enact to have more significance on the performance measure of the transmission. The mobile wireless network is also one such network whose quality of service are determined from the ways the trails are entrenched. This wireless adhoc network that is independent of the previously existing structure forms a topology that undergoes spontaneous changes with the closely existing data points or devices. This type of networks are well suited for many adverse situation and environment, but certain attributes of the wireless adhoc such as insubstantial bandwidth, more over head in paths , hidden data point problem, energy restraints, motility interfered routing make them visage difficulties in having a proper routing, empowering MANET to achieve lesser quality in the service provided. So this paper quality of service analysis for the MANET using high power low mobility protocol ensures a routing path entrenchment between highly energetic with diminished motility data points to improvise the quality of service. The QoS analysis is done based on the delay, throughput and the packet delivery ratio to measure its performance.
ANALYSIS OF ROUTING PROTOCOLS IN FLYING WIRELESS NETWORKS
Authors: Natarajan Krishnaraj
Published: November 2019

The wireless network that are formed on the fly, without relying on the previous infrastructure, including the autonomous devices that lie nearby are called the flying wireless networks. Despite of the networks, self-configuring and self-healing nature, it incurs many challenges due to its mobile nature, limited battery span and the lack of the centralized control, so these wireless network requires a perfect routing protocol addressing the challenges and improving the performance of the network, so the paper presents the survey on the various routing protocols that enhances the performance of the flying wireless network. The survey is further continued with the analysis of the routing protocols to evince the capability of the same on the grounds of network life time, energy consumption and the quality of service.
Analisis Kontrastif Persepsi Mahasiswa terhadap Psikologi Pembelajaran dan Implikasinya terhadap Peran Guru Suatu Studi Deskriptif Kualitatif terhadap Mahasiswa Murni dan Mahasiswa Bekerja pada Program Studi Pendidikan Anak Usia Dini diUniversitas AlAzhar
Authors: Fidesrinur Fidesrinur
Published: November 2019

Pertumbuhan yang cepat dalam Pendidikan Anak Usia Dini (PAUD) ini belum diiringi oleh ketersediaan dan kemampuan guru yang memadai. Untuk itu Perguruan Tinggi Keguruan perlu mepersiapkan calon guru yang siap mengajar sesuai dengan perkembangan ilmu terkini berdasarkan  konteks pembelajaran  yang dihadapi. Perbedaan latar belakang mahasiswa program studi PAUD antara  mahasiswa yang berlatar belakang guru dan mahasiswa murni merupakan suatu fenomena yang menarik untuk dikaji guna memperoleh kesamaan dan perbedaan persepsi dalam menyikapi filosofi pembelajaran baik secara teori maupun praktek. Hasil kajian menunjukkan bahwa mahasiswa yang berlatar belakang guru lebih fleksibel dalam menerapkan pendekatan pembelajaran sesuai konteksnya, sedangkan mahasiswa murni lebih berorientasi pada siswa sebagaimana tuntutan perkembangan teori belajar saat ini. Perbedaan ini menunjukkan bahwa mahasiswa harus dibekali praktek pembelajaran lebih banyak dengan berbagai konteks sehingga memberikan fleksibilitas dalam pembelajaran.
 Abstract 

The growth of Early Childhood Education (ECE) not yet supported by qualified teacher that makes early childhood education quality are low.  As ECE educator producer, ECE Department of Al Azhar Indonesia University should take role on preparing teacher’s candidate to become well inform both in theoretical and practical perspectives based on contextual teaching. The differences of student’s background between transferred student and fresh student become a phenomenon toward their own teaching perspectives. The research findings show that transferred students are more flexible than  fresh student in teaching where most of fresh student thinking based on   the latest theory studied based on books. The implication of the study is that  the fresh student should have experiences long enough in teaching  with various students background. The experiences with various students background might combine the essence of theory read by the student based on contextual practices.
Pesan-Pesan Kemanusiaan Novel Jenghis Khan Karya John Man: Pendekatan Struktural Genetik
Authors: Budianingsih Tri
Published: November 2019

Abstrak - Penelitian ini mengenai pesan-pesan kemanusiaan pada novel Jenghis Khan sebuah kisah yang diangkat dari negeri Mongolia karya seorang penulis barat yang bernama John Man. Penelitian ini adalah penelitian kualitatif dengan pendekatan struktural genetik. Tujuan dari penelitian ini dilakukan untuk mengetahui sisi baik dari seorang panglima besar yang terkenal dan ditakuti di penjuru dunia dalam masanya. Metode yang digunakan dalam penelitian ini menggunakan pendekatan kualitatif dengan metode analisis isi model induktif. Dalam analisis isi kualitatif, seharusnya ditentukan apa bagian penarikan kesimpulan dari informasi yang dibuat, kepada aspek-aspek komunikator (pengalaman, pendapat dan perasaannya). Hasil penelitian menunjukkan dalam novel Jenghis Khan Karya John Man terdapat 16 informasi yang menunjukkan nilai-nilai kemanusiaan sang tokoh terhadap pesan-pesan kemanusiaan, kepedulian dan toleransi berjumlah 5 dengan presentasi 31%, kegotongroyongan dan harapan berjumlah 3 dengan presentasi 19%.

 

Kata Kunci – Novel, Pesan Kemanusiaan, Struktural Genetik

 

Abstract – This research is about the messages and humanity in the novel Genghis Khan, a story lifted from Mongolia by a writer named John Man. This study is a qualitative research with a genetic structural approach. The purpose of this study was conducted to determine the good side of a great commander known and feared throughout the world in his time. The method used in this study used a qualitative approach with the method of inductive content analysis models. In a qualitative content analysis, it should be determined what part inference of created information to the aspects of the communicator (thoughts, opinions and feelings). The results showed on Genghis Khan novel by John Man, there are 16 information that shows the values of humanity of the hero to the messages of humanity, caring and tolerance amounts 5 with 31% presentation, mutual cooperation and hope totaling 3 with 19% presentation.

 
Keywords – Novel, Messages of Humanity, Structural Genetic
Pelatihan Motivasi Bagi Siswa Kelas XI SMA dalam Mempersiapkan Diri Menghadapi Ujian Nasional
Authors: Rahmawati Siti , Imawati Rochimah , Firmiana Masni
Published: November 2019

Abstrak – Ujian Nasional (selanjutnya disebut UN) seperti menjadi semacam momok yang sangat menakutkan bagi kebanyakan peserta didik di seluruh  Indonesia. Tak jarang sebagian dari mereka mengalami psikosomatis sebelum menjalani UN. Kondisi seperti kecemasan, motivasi mendadak turun, tidak jarang terjadi hingga mengacaukan tujuan mereka : lulus UN. Pelatihan ini diberikan untuk meningkatkan motivasi dengan memberikan treatment berupa test minat dan bakat, serta training motivasi untuk mennetukan setting goal  siswa untuk menentukan cita-cita. Setelah mengikuti pelatihan ini siswa-siswa mampu lebih mengenal diri mereka dan potensi-potensi yang dimiliki. Siswa juga merasa lebih percaya diri dan siap untuk menghadapi UN. Rasa cemas yang sering muncul dapat berkurang karena siswa sudah mampu mengidentifikasi kelebihan dan kekurangan yang ada ada dirinya.

 

Kata Kunci – Pengaturan Tujuan, Masa Remaja, Motivasi, Training, Ujian Nasional

 

Abstract - The National Examination (hereinafter referred to as UN) is like becoming a scary specter for most learners throughout Indonesia. Not infrequently some of them experience psychosomatic before doing UN. Conditions such as anxiety, sudden motivation down, not infrequently happens to disrupt their goals: pass the UN. This training is given to improve motivation by providing treatment in the form of test of interest and talent, as well as motivational training to determine the goal setting of students to determine the ideals. After attending this training the students are able to know more about themselves and their potentials. Students also feel more confident and ready to face the UN. Anxiety that often appears can be reduced because students are able to identify the advantages and disadvantages that exist there himself.

 

Keywords – Goal Setting, Adolescence, Motivation, Training, National Examination
Peran Kegiatan Fun cooking dalam Kemampuan Sosial Emosional dan Bahasa Anak
Authors: Amaros Yosi , Rohita Rohita
Published: November 2019

Abstrak - Penelitian ini bertujuan untuk mengetahui peran fun coooking dalam meningkatkan kemampuan sosial emosional dan bahasa anak di TK Al Izhar Pondok Labu, Jakarta Selatan. Subjek penelitian ini anak usia 5-6 tahun yang mengikuti kegiatan ekstra kurikuler fun cooking berjumlah 8 orang anak. Metode yang digunakan adalah pendekatan kualitatif deskriptif dengan teknik pengumpulan data menggunakan observasi, wawancara, dan dokumentasi. Kemudian data yang sudah terkumpul di triangulasi dengan jenis triangulasi teknik. Berdasarkan hasil penelitian anak, diperoleh informasi bahwa fun cooking memiliki peran dalam kemampuan sosio emosional dan bahasa anak. Kegiatan fun cooking memiliki peran dalam kemampuan bahasa anak terutama dalam memahami beberapa perintah secara bersamaan; menjawab pertanyaan yang lebih kompleks; memperkaya perbendaharaan kata; serta menuliskan nama sendiri. Sementara dalam kemampuan sosial emosional anak, fun cooking membuat anak mampu menaati aturan kelas; mengatur diri sendiri; berbagi dengan orang lain; menunjukkan sikap toleran; serta mengekspresikan emosi yang sesuai dengan kondisi yang ada.

Abstract  - This study aims to determine the role of fun cooking in improving emotional social skills and language of children in kindergarten Al Izhar Pondok Labu, South Jakarta. These research subjects 5-6 years old children who take part in extracurricular fun cooking amounted to 8 children. The method used is descriptive qualitative approach with data collection technique using observation, interviews, and documentation. Then the data that have been collected in triangulation with the type of triangulation techniques. Based on the results of the study of children, there was information that the fun of cooking has a role in the socio-emotional and language abilities of children. Fun cooking activities have a role in the child's language ability, especially in understanding multiple commands simultaneously; answer more complex questions; enriching vocabulary; as well as write his own name. While the emotional social abilities of children, fun cooking to make children able to obey the rules of the classroom; self-regulating; share with others; show tolerance; and express the emotions that correspond to existing conditions.

Keywords -  Fun cooking, Language skills, Social emotional skills
Notiarrayanes: más que una práctica pedagógica, un sitio para fomentar el encuentro, el diálogo y la construcción
Authors: Castañeda Vanegas Alexander
Published: November 2019

El presente texto describe las fortalezas y posibilidades del blog escolar “Notiarrayanes”, una estrategia innovadora en investigación que busca promover la construcción de identidad y de memoria del territorio, reconociéndolos como elementos claves para alcanzar la paz. Desde 2010 el CED Rural Los Arrayanes ha buscado que la comunidad de esta vereda se acerque al uso de las Tecnologías de la Información y la Comunicación (TIC), para así romper con la brecha digital que existe entre dicha zona rural y el resto de la capital colombiana.
Con-Jugar con MuisKanoba. Matriz para la intervención pedagógica en el Colegio Santa Ana de Suacha
Authors: Aguilera Martínez Angélica , Panqueba Cifuentes Jairzinho Francisco
Published: November 2019

El artículo de investigación presenta las diversidades culturales que se consideran desde tiempos recientes como un horizonte necesario para mejorar la condición humana, pero apenas estamos iniciando su recuperación. Los conocimientos ancestrales, admirados como parte de un pasado olvidado, están proponiendo la con-jugación de nuevos retos cientí‚cos. El emprendimiento MuisKanoba emerge en esta coyuntura, disponiendo unas pedagogías que entran en diálogo con las disciplinas que hacen parte del campo de la educación. Para ello, formula una matriz en la que se van ajustando sus criterios conceptuales con las formas de aprehendizaje demandadas por las comunidades escolares actuales.
Los discursos internacionales, la calidad de la educación y las políticas públicas
Authors: Herrera Casilimas Gloria Elena
Published: November 2019

El presente artículo de reflexión aborda los planteamientos sobre educación de distintos organismos internacionales (CEPAL, UNESCO, Banco Mundial, entre otros), para identificar los conceptos esenciales, regularidades y formaciones discursivas que se generan en el campo mundial sobre la formación de maestros y la educación, y su incidencia en las políticas públicas de los países latinoamericanos, entre ellos Colombia, durante los últimos decenios. Las ideas expuestas surgen de la investigación sobre los procesos de acreditación de las escuelas normales superiores del país en el presente siglo y los retos que enfrentan2. Este apartado del estudio se basó en el análisis del discurso desde rasgos arqueológicos y genealógicos.
Políticas públicas para la integración de las TIC en educación
Authors: Cortés Rincón Albenis
Published: November 2019

Para hacer frente a los cambios tecnológicos y pedagógicos el profesorado precisa de nuevas competencias y modelos de trabajo no requeridos con anterioridad. La presente revisión aborda la incorporación de las TIC en la educación, desde las políticas públicas que las promueven, presentando su incidencia en la enseñanza y el aprendizaje, su rol frente a la sociedad de la información, los desafíos de la educación inclusiva, así como las tecnologías emergentes. Para finalizar se presentan las orientaciones internacionales y nacionales en el contexto de estudio.
Aprendizaje-Servicio: una práctica educativa que favorece la participación fuerte de los menores en la construcción de las ciudades
Authors: Mayor Paredes Domingo
Published: November 2019

Este trabajo presenta los resultados parciales de un estudio enfocado hacia el análisis de la influencia que tienen los proyectos de Aprendizaje-Servicio para favorecer la participación de los menores en la construcción de su entorno. La investigación tomó como eje de estudio un proyecto que se implementaba en aula de primaria, donde participaron diversos agentes socio-educativos. Para ello se utilizó el estudio de caso como metodología de investigación y distintos instrumentos como estrategias para la recolección de información. Los resultados obtenidos permiten constatar el impacto positivo producido en la participación de los menores y en el entorno.
Ser responsables de sí mismos. Las políticas educativas de los estándares, las competencias y los talentos
Authors: Cortés Salcedo Ruth Amanda
Published: November 2019

Los discursos sobre la educación, que algunos organismos internacionales difundieron durante dos décadas, produjeron unos efectos que derivaron en la producción de subjetividades funcionales a una nueva racionalidad política que pretendió que el sujeto fuera cada vez más responsable de sí mismo, para lo cual se desplegaron ciertas estrategias que le hicieron creer que su libertad se ampliaba mientras más controlado estaría. En el presente artículo se realiza una revisión de lo que sucede en ellos.
Prolegómenos para una “aprendencia” desde la corporeidad
Authors: Pacheco Villegas Carlos Eduardo
Published: November 2019

Como noción, la corporeidad está inmersa en lo que hoy se denominan “discursos epistemológicos emergentes de la Educación Física”, con una fuerte carga fenomenológica inspirada en la intencionalidad, la conciencia y la experiencia humana. Su riqueza intrínseca invita a pensar desde “otras formas” la mediación pedagógica de la Educación Física, con la finalidad de superar la visión cartesiana dualista, cientificista y mecanicista que ha venido haciendo énfasis en la individualidad, la competitividad y el rendimiento. Esa visión cartesiana ha dejado de lado, aparentemente, la multidimensionalidad del sujeto aprendiente, la existencia humana y el ser. Se procura en el escrito, entonces, posibilitar la construcción de elementos formativos desde la corporeidad, que sugiera formas alternativas de aprendencia.
Presentación
Authors: IDEP Admin
Published: November 2019

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Best-sellers de la lectura juvenil: prácticas de lectoescritura y apropiación cultural
Authors: Polo Rojas Néstor David
Published: November 2019

La literatura best-seller es un fenómeno social y cultural que interesa a educadores de todo el mundo. Esta investigación analiza las prácticas de lectoescritura y estrategias de aprendizaje desarrolladas por los jóvenes lectores en relación con estos libros. Partiendo de un enfoque cualitativo, y empleando metodología etnográfica, el artículo recupera las experiencias y percepciones de estudiantes de colegios distritales de Bogotá, cruzándolas con los testimonios de mediadores, como editores y profesores, para comprender el proceso de apropiación y desarrollo de competencias derivados de estas “ficciones populares”.
Fábulas de robots: una propuesta divergente en la enseñanza de la filosofía
Authors: López Chacón Yerson Alejandro
Published: November 2019

El objetivo de este artículo es proponer una didáctica divergente, que funda la enseñanza de la filosofía y la formación de lectores críticos a partir de la literatura de ciencia ficción. Para ello, argumenta la existencia de una poética filosófica, bajo el enfoque sociocultural y antropológico, en este género literario, particularmente en la ficción distópica, con la obra Fábulas de robots, de Stanislaw Lem. La presente configuración teórica y metodológica permite analizar el contexto cultural de la formación filosófica, durante la educación media, en el siglo XXI.El objetivo de este artículo es proponer una didáctica divergente, que funda la enseñanza de la filosofía y la formación de lectores críticos a partir de la literatura de ciencia ficción. Para ello, argumenta la existencia de una poética filosófica, bajo el enfoque sociocultural y antropológico, en este género literario, particularmente en la ficción distópica, con la obra Fábulas de robots, de Stanislaw Lem. La presente configuración teórica y metodológica permite analizar el contexto cultural de la formación filosófica, durante la educación media, en el siglo XXI.
Realidad aumentada (RA): aplicaciones y desafíos para su uso en el aula de clase
Authors: Cárdenas Ruiz Henry Alberto , Mesa Jiménez Fredy Yesid , Suarez Barón Marco Javier
Published: November 2019

La Realidad Aumentada (RA) es una tecnología en auge, por ello, basados en principios de investigación documental y búsqueda en bases de datos, el presente artículo da a conocer algunas de sus implicaciones en las aulas de clase, a partir de investigaciones que evidencian el trabajo con ella en la educación o en distintas actividades; la lectura permitirá identificar parte de la evolución de la RA, algunos software utilizados para trabajar con ella, su relevancia y posibles cambios en los tradicionales procesos de enseñanza-aprendizaje, concluyendo con aportes que realiza a dichos procesos y aspectos llamativos sobre cómo, junto con la inclusión de las TIC, sobresale en tanto herramienta didáctica en las aulas.
Design and facile synthesis of defect-rich C-MoS2/rGO nanosheets for enhanced lithium–sulfur battery performance
Authors: Tian Chengxiang , Wu Juwei , Ma Zheng , Li Bo , Li Pengcheng , Zu Xiaotao , Xiang Xia
Published: November 2019

We report a simple one-step hydrothermal strategy for the fabrication of a C-MoS2/rGO composite with both large surface area and high porosity for the use as advanced electrode material in lithium–sulfur batteries. Double modified defect-rich MoS2 nanosheets are successfully prepared by introducing reduced graphene oxide (rGO) and amorphous carbon. The conductibility of the cathodes can be improved through the combination of amorphous carbon and rGO, which could also limit the dissolution of polysulfides. After annealing at different temperatures, it is found that the C-MoS2/rGO-6-S composite annealed at 600 °C yields a noticeably enhanced performance of lithium–sulfur batteries, with a high specific capacity of 572 mAh·g−1 at 0.2C after 550 cycles, and 551 mAh·g−1 even at 2C, much better than that of MoS2-S nanosheets (249 mAh·g−1 and 149 mAh·g−1) and C-MoS2/rGO-S composites (334 mAh·g−1 and 382 mAh·g−1). Our intended electrode design protocol and annealing process may pave the way for the construction of other high-performance metal disulfide electrodes for electrochemical energy storage.
Iodine-mediated hydration of alkynes on keto-functionalized scaffolds: mechanistic insight and the regiospecific hydration of internal alkynes
Authors: Lee Zachary , Jones Brandon R , Nkengbeza Nyochembeng , Phillips Michael , Valentine Kayla , Stewart Alexis , Sellers Brandon , Shuber Nicholas , Aiken Karelle S
Published: November 2019

An iodine-mediated hydration reaction of alkynes serves as a green alternative to metal-catalyzed procedures. Previous work has shown that this method works well with terminal alkynes on keto-functionalized scaffolds, including 1,3-dicarbonyls and their heteroatom analogues. It was hypothesized that the reaction proceeds through a 5-exo-dig neighboring group participation (NGP) cyclization and an α-iodo intermediate. The work described herein probes the existence of the intermediate through NMR investigations and explores the scope of the hydration process with internal alkynes. The NMR experiments confirm the existence of the α-iodo intermediate, and methodology studies demonstrate that alkyl-capped, asymmetric, internal alkynes undergo a regiospecific hydration, also via the 5-exo-dig NGP pathway.
Two new species of braconid wasps (Hymenoptera, Braconidae) from India
Authors: Ahmad Zubair , Ghramh Hamed A. , Ansari Anjum
Published: November 2019

Two new species viz., Pambolus (Phaenodus) shujaisp. nov., and Parachremylus trachysisp. nov., of braconid wasps are described as new to science. Parachremylus trachysisp. nov., is reared from larvae of the leaf miner Trachys sp. (Coleoptera, Buprestidae) on Corchorus sp. (Wild Jute Plant). A new species of Pambolus Haliday along with two known species is also recorded. A key to the Indian species of Pambolus is also provided. Diagnoses with morphological characters and illustrations are provided.
Dual metal zeolitic imidazolate frameworks as an organometallic polymer for effective adsorption of chlorpyrifos in aqueous solution
Authors: Samadi-Maybodi Abdolraouf , Rahmati Afshin
Published: November 2019

In this work for the first time, green technique-solvent free synthesis Dual metallic Zeolitic imidazolate frameworks (ZIF-2M) consisting of cobalt and zinc metals (ZIF-2M) at room temperature was performed. The synthesized compound was used as an efficient adsorbent for the adsorption of chlorpyrifos. The presence of second metal led to the improving in both chemical as well as physical properties such as crystal structure, porosity, specific area and magnetic property together keeping basic structure of ZIFs. In order to comparison ZIF-2M with ZIF-8 both of them were applied for removal of chlorpyrifos in aqueous solution. Comparison of removal efficiency was investigated for both nanoparticles under optimized conditions. The main factors which can potentially effect on the adsorption process are dosage of adsorbent, pH and contact time. Those factors were considered in statistical studies. The optimum conditions were achieved by BOX-Behnken design(BBD). Results revealed that the removal efficiency of ZIF-2M (97%) is more than that of ZIF-8 (90%). Also, Langmuir and Freundlich isotherms for chlorpyrifos sorption by ZIF-2M in optimal conditions were studied and discussed.
CONSECUENCIAS DE LA NEUROMODULACIÓN ENDÓGENA EN EL FENÓMENO DE LA DESINCRONIZACIÓN DE LOS RITMOS SENSORIMOTORES EN LA ENFERMEDAD DE PARKINSON
Authors: Del Castillo-Sobrino M. Dolores , Serrano-Moreno J. Ignacio , Rocon-de Lima Eduardo
Published: November 2019

El objetivo principal de este trabajo es el estudio de la desincronización de los ritmos motores en la enfermedad de Parkinson antes y después de recibir una intervención de neuromodulación endógena. De acuerdo a la literatura en este campo, los pacientes de Parkinson presentan una sincronía neural aberrante en los rimtos beta, que podría estra en la base de la rigidez y la lentitud motora que presentan. Puesto que el fenómeno neurofisiológico de desincroniación de los ritmos motores parece estar asociado a la coordinación de la función motora, este fenómeno puede ser un biomarcador relevante sobre el papel jugado por la terapia de neuromodulación. En el estudio llevado a cabo han participado 11 pacientes, que han realizado una tarea de extensión de muñeca mientras se capturaba su señal electroencefalográfica en las 9 posiciones centrales, de acuedor al sistema internacional 10-20, antes y después de recibir 8 sesiones de neuromodulación endógena. Los resultados obtenidos muestran diferencias significativas en determinados parámetros del fenómeno de desincronización aosicadas principalmente a la mano dominante, a las áreas motora y premotora y a diferentes bandas de frecuencia.
A crise do estado e a inadequação de nossos instrumentos jurídicos : o exemplo do garantismo penal no Brasil
Authors: Poll Costa Oswaldo , Quintanilha Veras Neto Francisco
Published: November 2019

O presente artigo visa a demonstrar, através de uma análise fenomenológico-hermenêutica, que a doutrina produzida no Brasil pelos autores que se filiam ao garantismo penal está arraigada a um pensamento essencialmente moderno, sendo, portanto, incapaz de compreender adequadamente o atual cenário mundial, marcado pela crise do Estado e pela hipermodernidade. Esses autores centram sua análise na Constituição e na jurisdição interna, utilizando os tratados internacionais de direitos humanos e a jurisdição internacional majoritariamente como um reforço argumentativo, em evidente dissintonia com mundo atual, onde as relações internacionais exercem um papel cada vez mais relevante.
Litigância climática como estratégia jurisdicional ao aquecimento global antropogênico e mudanças climáticas
Authors: Carvalho Délton Winter de , Barbosa Kelly De Souza
Published: November 2019

O aquecimento global e as mudanças climáticas decorrentes da interferência antropogênica são pautas universais que clamam uma discussão séria, urgente e eficaz, entre o Poder Público, as organizações internacionais, o setor científico e empresarial e a sociedade. Não há como perseverar a apatia na regulamentação, implementação e fiscalização das emissões de gases de efeito estufa e atenuação às mudanças climáticas. Nesse contexto, diante da omissão ou comedido ímpeto dos principais atores responsáveis pelo aquecimento global antropogênico, como a litigância climática pode contribuir para a mitigação e adaptação das mudanças climáticas? Tendo como objetivo geral apresentar um panorama sobre a litigância climática, foram desenvolvidos dois capítulos utilizando como estratégia metodológica a pesquisa descritiva aliada a investigação bibliográfica e documental. Ademais, a título de exemplo e em atenção a tradição, influência global e quantidade de processos relacionados a esta matéria nos Estados Unidos da América, se refletiu sobre os principais litígios climáticos da jurisdição norte-americana. A litigância climática apresenta-se como uma estratégia promissora para compelir e impulsionar as grandes empresas, industrias e, principalmente, o Poder Público em sua função legislativa e executiva, a assumirem e se responsabilizarem pelo controle e impactos do aquecimento global antropogênico e mudanças climáticas.
A autonomia da vontade na escolha da lei aplicável aos contratos de comércio internacional no regulamento Roma I da União Europeia
Authors: Beltrame de Moura Aline , Hormann Rafaela
Published: November 2019

O presente artigo estuda a autonomia da vontade como elemento de conexão do Direito Internacional Privado europeu e sua influência nos contratos de comércio internacional. Em particular, analisa-se o Regulamento Roma I e a interpretação dada a alguns de seus dispositivos pelo Tribunal de Justiça da União Europeia, visando compreender os limites impostos à liberdade concedida às partes na escolha da lei aplicável às relações contratuais. Conclui-se que o Regulamento Roma I concede ampla autonomia às partes de relações contratuais internacionais no âmbito da União Europeia. Entretanto, importantes tópicos acerca da lei aplicável seguem sem regulamentação completa, atribuindo aos juízes grande poder interpretativo.
A justiça espacial e ambiental e a teoria do risco: a responsabilidade do governo na prevenção contra desastres (no Brasil)
Authors: Sampaio José Adércio Leite , De Oliveira Edson Rodrigues
Published: November 2019

Resumo: o artigo em tela estimula reflexões acerca dos riscos e perigos de desastres naturais e artificiais e suas consequências nos dias atuais e vindouros. As atividades afetas inerentes à força física de resposta do Estado implicam execução das atividades de defesa civil, que deve escudar seu aporte técnico de resposta na ciência interdisciplinar. Historicamente os desastres eram sinalizados pelo risco ou perigo vinculado ao quesito da ameaça (potencial de efeitos traumáticos do evento), mas, os iluministas fomentaram a migração para a vulnerabilidade das comunidades frente aos desastres(capacidade de enfrentamento e superação ao evento). A temática sugere a mister previsibilidade científica das situações de risco ou perigo de desastres e investimento preventivo, antecipando-se ao desastre, mitigando perdas. O problema emerge das amostras dos dois últimos desastres de barragens de rejeitos de minérios em Minas Gerais, demonstrando objetivamente a adoção do arquétipo arcaico, em detrimento das comunidades e bens vulneráveis. O método empregado é o hipotético dedutivo e, a pesquisa evidenciada se justifica pelo crescente potencial de risco, especialmente pelas mudanças e fenômenos climáticas e, no Brasil, ainda, a pluralidade de barragens de rejeitos de mineração em condições análogas às rompidas.
An intercomparison of CH3O2 measurements by Fluorescence Assay by Gas Expansion and Cavity Ring–Down Spectroscopy within HIRAC (Highly Instrumented Reactor for Atmospheric Chemistry)
Authors: Onel Lavinia , Brennan Alexander , Gianella Michele , Hooper James , Ng Nicole , Hancock Gus , Whalley Lisa , Seakins Paul W. , Ritchie Grant A. D. , Heard Dwayne E.
Published: November 2019

Abstract. Simultaneous measurements of CH3O2 radical concentrations have been performed using two different methods in the Leeds HIRAC (Highly Instrumented Reactor for Atmospheric Chemistry) chamber at 295 K and in 80 mbar of a mixture of 3 : 1 He : O2 and 100 mbar or 1000 mbar of synthetic air. The first detection method consisted of the indirect detection of CH3O2 using the conversion of CH3O2 into CH3O by excess NO with subsequent detection of CH3O by fluorescence assay by gas expansion (FAGE). The FAGE instrument was calibrated for CH3O2 in two ways. In the first method, a known concentration of CH3O2 was generated using the 185 nm photolysis of water vapour in synthetic air at atmospheric pressure followed by the conversion of the generated OH radicals to CH3O2 by reaction with CH4 / O2. This calibration can be used for experiments performed in HIRAC at 1000 mbar in air. In the second method, calibration was achieved by generating a near steady-state of CH3O2 and then switching off the photolysis lamps within HIRAC and monitoring the subsequent decay of CH3O2 which was controlled via its self-reaction, and analysing the decay using second order kinetics. This calibration could be used for experiments performed at all pressures. In the second detection method, CH3O2 has been measured directly using Cavity Ring-Down Spectroscopy (CRDS) using the absorption at 7487.98 cm-1 in the A
Contribution of understory evaporation in a tropical wet forest
Authors: Jimenez-Rodriguez Cesar Dionisio , Coenders-Gerrits Miriam , Wenninger Jochen , Gonzalez-Angarita Adriana , Savenije Hubert
Published: November 2019

Abstract. Tropical wet forests are complex ecosystems with a large number of plant species. These environments are characterized by a high water availability throughout the whole year and a complex canopy structure. However, how the different sections of the canopy contribute to total evaporation is poorly understood. The aim of this work is to estimate the total evaporation flux and differentiate the contribution among canopy layers of a tropical wet forest in Costa Rica. Monitoring the fluxes during the dry season by making use of the energy balance to quantify the fluxes and stable water isotopes to trace the sources of water vapor. Total evaporation was 275.5 mm and represents 55.9 % of the recorded precipitation (498.8 mm), with 11.7 % of the precipitation being intercepted and evaporated along the forest canopy. The understory beneath 8 m contributed with 23.6 % of the evaporation and almost half of it comes from the first 2 m of the understory. Stable water isotope signatures show different soil water sources depending on the plant type. Palms make use of a water source with an isotope signature similar to precipitation and throughfall. Soil water with a fractionated signature is used by trees, bushes and lianas. The isotope signature of water vapor samples overlap among different heights, but it was not possible to make use of the keeling plot method due to the similar isotope signature of the possible sources of water vapor as well as the high water concentration even on the dryer days.
Large-scale electrical resistivity tomography in the Cheb Basin (Eger Rift) at an International Continental Drilling Program (ICDP) monitoring site to image fluid-related structures
Authors: Nickschick Tobias , Flechsig Christina , Mrlina Jan , Oppermann Frank , Löbig Felix , Günther Thomas
Published: November 2019

Abstract. The Cheb Basin, a region of ongoing swarm earthquake activity in the western Czech Republic, is characterized by intense carbon dioxide degassing along two known fault zones – the N–S-striking Počatky–Plesná fault zone (PPZ) and the NW–SE-striking Mariánské Lázně fault zone (MLF).
The fluid pathways for the ascending CO2 of mantle origin are one of the subjects of the International Continental Scientific Drilling Program (ICDP) project “Drilling the Eger Rift” in which several geophysical surveys are currently being carried out in this area to image the topmost hundreds of meters to assess the structural situation, as existing boreholes are not sufficiently deep to characterize it. As electrical resistivity is a sensitive parameter to the presence of conductive rock fractions as liquid fluids, clay minerals, and also metallic components, a large-scale dipole–dipole experiment using a special type of electric resistivity tomography (ERT) was carried out in June 2017 in order to image fluid-relevant structures.
We used permanently placed data loggers for voltage measurements in conjunction with moving high-power current sources to generate sufficiently strong signals that could be detected all along the 6.5 km long profile with 100 and 150 m dipole spacings.
After extensive processing of time series for voltage and current using a selective stacking approach, the pseudo-section is inverted, which results in a resistivity model that allows for reliable interpretations depths of up than 1000 m. The subsurface resistivity image reveals the deposition and transition of the overlying Neogene Vildštejn and Cypris formations, but it also shows a very conductive basement of phyllites and granites that can be attributed to high salinity or rock alteration by these fluids in the tectonically stressed basement.
Distinct, narrow pathways for CO2 ascent are not observed with this kind of setup, which hints at wide degassing structures over several kilometers within the crust instead.
We also observed gravity and GPS data along this profile in order to constrain ERT results.
A gravity anomaly of ca. −9 mGal marks the deepest part of the Cheb Basin where the ERT profile indicates a large accumulation of conductive rocks, indicating a very deep weathering or alteration of the phyllitic basement due to the ascent of magmatic fluids such as CO2.
We propose a conceptual model in which certain lithologic layers act as caps for the ascending fluids based on stratigraphic records and our results from this experiment, providing a basis for future drillings in the area aimed at studying and monitoring fluids.
Analyzing Class Attendance and Student Achievement in Prescribed College Mathematics Courses
Authors: Schmidt Teresa A. , Raines Joan M.
Published: November 2019

Class attendance has been a concern of educators over the years. Multiple research studies have examined class attendance and its impact on student achievement in various college classes. The purpose of this study was to determine whether a relationship existed between class attendance and student achievement in prescribed college mathematics courses. Class attendance was compared with various factors for students at one institution across multiple sections of two different prescribed mathematics courses, College Algebra and Applied Statistics. Results indicated that the number of days that a student missed class did affect their overall performance in the course. Additionally it was noted that if a student missed more than 40% of class instructional time, they were certain not to receive a final course grade higher than a D.
The Association Between Parents’ Socio-Economic Status and the Level of Religiosity Among Undergraduates
Authors: Ajoke Olatunji Olabimpe , Sunday Idemudia Erhabor
Published: November 2019

This study assessed the influence of parents’ socio-economic status on the level of religiosity in a sample of Nigerian undergraduates. A convenience sample of 200 students (mean age = 20.41 ± 2.54) participated in the study. Two structured scales were used which included Kuppuswanny’s scale and Duke University Religiosity Index. Data were analysed using one way ANOVA. Findings showed that the parental education, occupation and income significantly influenced the level of religiosity. A follow-up post-hoc analysis using Fisher’s LSD showed that participants whose parents were employed in non-professional occupation with lower education and poorer income were more religious compared to their counterparts whose parents had higher education, higher income and engaged in professional occupations. The study recommended that the upcoming generation of youth should utilize an objective, practical, and aggressive approach as a means to achieve better socio-economic and political transformation rather than using religion practises.
The Workforce Aging and Challenges for Policy and for Business. The Case of Italy
Authors: Rose Alessandra De , Racioppi Filomena , Checcucci Pietro , Arezzo Maria Felice , Polli Corrado
Published: November 2019

Across Europe, the working age population is decreasing and aging. In this study, with reference to Italy, we analyze the main demographic trends underlying these processes. By using data from the continuous Labor Force Survey, we show the effects of the overall population dynamics on workforce age structure and its composition by professional activities and economic sector. We argue that the observed changes in the labor market are only partially due to demographic trends since they are strictly intertwined with the rigidity of the Italian economic system. We then illustrate the results of two sample surveys conducted among large and small-medium Italian enterprises, respectively. The main result is that the Italian businesses are moderately aware of the aging process of their human resources, and only a few are worried about it. Only few larger companies are actively implementing strategies of age management in order to cope with the issue. Finally, we discuss the implications for the policy of the above results, also in the light of recommendations from the international organizations.