Electronically Tunable Current-Mode Third-Order Square-Root-Domain Filter Design

In this study, electronically-tunable, current-mode, square-root-domain, third-order low-pass filter is proposed. The study is carried out with three circuit designs. First circuit is third-order low-pass Butterworth filter, second circuit is third-order low-pass Chebyshev filter and the last circuit is third-order low-pass elliptic filter. All the input and output values of the filter circuit are current. Only grounded capacitors and MOSFETs are required in order to realize the filter circuit. Additionally, natural frequency f0 of the current-mode filter can be adjusted electronically using outer current sources. To validate the theory and to demonstrate the performance of third-order filter, frequency and time domain simulations of PSPICE program are used. To that end, TSMC 0.35μm Level 3 CMOS process parameters are utilized to realize the simulations of the filter. © 2018 World Scientific Publishing Company

Asian Spring for organic agriculture: Korea takes a lead

Korea’s Organic World Congress (OWC) was a milestone for Korea, for Asia, and for the world. It perhaps signals an Asian Spring for organics where Korea, in particular, and Asia, in general, are set to make rapid progress in meeting their aspirations and goals for reclaiming food and agriculture as organic. Korea’s OWC can serve to reinvigorate the momentum of organics in Asia where the organic statistics are dominated by the ‘organic giants’ of China and India. One remarkable enduring legacy of the OWC is the Namyangju Organic Museum. It is the world’s first museum dedicated to organic agriculture and was launched to coincide with the OWC. It is housed in a bold and strikingly modern new building. The museum presents a timeline of the history of organic agriculture and interactive experiences for visitors. An output of the OWC are two volumes of proceedings of the Third Scientific Conference of ISOFAR offering a total of 1090 pages of peer reviewed research on organic food and farming. The success of Korea’s Organic World Congress was an affirmation of the resolve, the vision, the vibrancy and the persistence, that remain wedded to the odd idea that we really don’t want out food pesticided, irradiated, and genetically modified and otherwise corporatised, industrialised and patented

The performance of modularity maximization in practical contexts

Although widely used in practice, the behavior and accuracy of the popular module identification technique called modularity maximization is not well understood in practical contexts. Here, we present a broad characterization of its performance in such situations. First, we revisit and clarify the resolution limit phenomenon for modularity maximization. Second, we show that the modularity function Q exhibits extreme degeneracies: it typically admits an exponential number of distinct high-scoring solutions and typically lacks a clear global maximum. Third, we derive the limiting behavior of the maximum modularity Q_max for one model of infinitely modular networks, showing that it depends strongly both on the size of the network and on the number of modules it contains. Finally, using three real-world metabolic networks as examples, we show that the degenerate solutions can fundamentally disagree on many, but not all, partition properties such as the composition of the largest modules and the distribution of module sizes. These results imply that the output of any modularity maximization procedure should be interpreted cautiously in scientific contexts. They also explain why many heuristics are often successful at finding high-scoring partitions in practice and why different heuristics can disagree on the modular structure of the same network. We conclude by discussing avenues for mitigating some of these behaviors, such as combining information from many degenerate solutions or using generative models.Comment: 20 pages, 14 figures, 6 appendices; code available at http://www.santafe.edu/~aaronc/modularity

Open Access Journals in the Member States of the Association of Southeast Asian Nations

This study portrays the status of Open Access Journals in the ten countries joining the Association of Southeast Asian Nations. Integrating the data from the ASEAN Citation Index, Directory of Open Access Journals, and Scopus, each captured from wider to narrower angels, this work could take a better full-length portrait of such journals including some relevant information in the region.In the first index, the nine countries registered 587 journals, over 50% not listed in the second index. In the second index, the six member states published 1,623 journals of which 39% adopted Creative Common BY. For about two decades they have shown publication and registration growth rates over double than the world has. Indonesia could dominate in all but the third index. In Scopus, the journals in the region averaged below the global averages of all bibliometric indicators but Scholarly Output. Despite this, three countries were above the global average in eight indicators. Over 40% of the 98 journals were ranked in Quartile 2.Such a marked contrast between the number of journals indexed in the second index and that in the third one could lead to the better intra- and inter- collaborations to give the scientific productivity higher visibility and impact

How the internet is shaping the Chilean scientific community: globalization and dependency

The Internet has emerged as a catalyst for global knowledge production. This is supported by its positive impacts in the First World. A progressive assessment argues that the Internet will be the elixir that brings immediate visibility and relevance to scientific communities in the periphery. Yet, Internet diffusion is often framed by past technology failures that further widen global divides. This characterizes an affliction argument. The teething argument suggests that adoption within the Third World is tentative at best with benefits unfolding over time in some regions but not others. This dissertation is a qualitative and quantitative study that tests these three technology arguments (elixir, affliction, and, teething) in a Latin American region. It considers the relationship between scientific communication, collaboration, and productivity in Chilean science, focusing on the role of Internet practice. Results are presented through the qualitative analysis of 29 video taped interviews, followed by a quantitative analysis of a communication network survey administered to 337 Chilean researchers. Qualitative findings suggest that despite Chilean regional leadership in economic output, political disruptions and a paucity of local resources motivate many researchers to seek training abroad. This creates new, exterior contacts that are maintained through email communication. These cyber links, though, may also be creating technology dependencies. Quantitative results confirm that Chilean scientists are well connected when compared to past region studies. Yet, the Chilean scientific community reports an inverse relationship between domestic and foreign contacts, mirroring the disjointed network profile found in other developing regions. Other results suggest that Chilean scientists frequently publish in foreign journals. And in contrast to findings from other developing areas, collaboration is consistently related with increased domestic publications. Although Chileans seldom report problems, those they do report are associated with working with more collaborators and having geographically heterogeneous networks. Email shows no effect toward reducing research problems; and in some cases, email is associated with more intensive reports of problems. Taken as a whole, this author\u27s findings support a teething argument for Internet influence on professional networks and activities within the Chilean scientific community

Bibliometric Analysis of Research on Mental Health in the Workplace in Canada 1991-2002

This paper uses the Medline biomedical papers database to measure scientific production on mental health in the workplace (MHWP) during the 1991-2002 period at the world, Canadian, provincial, urban, institutional and researcher levels. The level of scientific output has doubled at the world level and tripled at the Canadian level during the last 12 years. At the provincial level, Ontario, Quebec, British Columbia and Alberta are leading in absolute number of papers. Ontario largely dominates both in terms of output and on a per capita basis. At the level of cities, Toronto and Montreal are the largest producers of papers on MHWP. The most important institutions in terms of papers on MHWP are McMaster University, Université de Montréal, the University of Toronto, the University of British Columbia and the University of Western Ontario. The universities with the largest number of active researchers in MHWP are McMaster University, Université Laval and York University

A Novel High Linearity and Low Power Folded CMOS LNA for UWB Receivers

© 2017 World Scientific Publishing Company. Electronic version of an article published as Journal of Circuits, Systems and Computers, Vol. 27, No. 03, 1850047, https://doi.org/10.1142/S0218126618500470.This paper presents a high linearity and low power Low-Noise Amplifier (LNA) for Ultra-Wideband (UWB) receivers based on CHRT 0.18μm CMOS technology. In this work, the folded topology is adopted in order to reduce the supply voltage and power consumption. Moreover, a band-pass LC filter is embedded in the folded-cascode circuit to extend bandwidth. The transconductance nonlinearity has a great impact on the whole LNA linearity performance under a low supply voltage. A post-distortion (PD) technique employing an auxiliary transistor is applied in the transconductance stage to improve the linearity. The post-layout simulation results indicate that the proposed LNA achieves a maximum power gain of 12.8dB. The input and output reflection coefficients both are lower than -10.0dB over 2.5~11.5GHz. The input third-order intercept point (IIP3) is 5.6dBm at 8GHz and the noise figure (NF) is lower than 4.0dB. The LNA consumes 5.4mW power under a 1V supply voltage.Peer reviewe

SERVANT LEADERSHIP KEPALA SEKOLAH DALAM UPAYA MENINGKATKAN KOMPETENSI PEDAGOGIK GURU DI ERA PANDEMI COVID-19

Tujuan penulisan artikel ilmiah ini untuk mengetahui, menjelaskan dan menganalisis servant leadership kepala sekolah dalam upaya meningkatkan kompetensi pedagogik guru di era pandemi covid-19. Metode yang digunakan ialah studi kepustakaan. Teknik pengumpulan data dilakukan dengan mengumpulkan kaian teks dan hasil penelitian yang relevan dengan topik. Langkah dalam analisis data ; Pertama, data yang dikumpulkan akan diklasifikasi sesuai dengan topik atau masalah yang dikaji. Kedua, data dianalisis menggunakan analisis isi. Ketiga, dilakukan pengambilan kesimpulan. Hasil kajian artikel ilmiah menunjukkan bahwa. Pertama, servant leadership kepala sekolah memiliki peran sangat penting dalam meningkatkan kompetensi pedagogik guru dalam upaya menghasilkan sumber daya manusia yang berkualitas. Kedua, tipe servant leadership merupakan tipe kepemimpinan yang memprioritaskan pelayanan terhadap pengikutnya. Ketiga, karakteristik yang dominan ialah membimbing, membina, memotivasi dan empati. Keempat, keberhasilan kepala sekolah dalam mengimplementasikan servant leadership ditentukan oleh: (1) guru berhasil meningkatkan kompetensi pedagogik terutama dalam pemahaman dan pengembangan peserta didik; (2) kepala sekolah menjadi suri tauladan bagi seluruh sekolah; (3) kualitas output sekolah berkompeten untuk terjun ke dunia masyarakat; (4) guru tidak segan untuk menyelesaikan permasalahan yang dihadapi dengan bantuan kepala sekolah. The purpose of writing this scientific article is to find out, explain and analyze the role of servant leadership of the principal in an effort to improve teacher’s pedagogic competence in the era of the covid-19 pandemic. This method used is literature study. Data collection techniques are carried out by collecting texts and research results that are relevant to the topic. Steps in data analysis: First, the collected data will be classified according to the topic or problem being studied. Second, the data were analyzed using content analysis. Third, conclusions are taken. The results of scientific article studies show that. First, the role of principal’s servant leadership has a very important role in improving the pedagogic competence of teachers in an effort to produce quality human resources. Second, the servant leadership is a type of leadership that prioritizes service to its followers. Third, the dominant characteristics are guiding, nurturing, motivating and empathetic. Fourth, the success of the principal in implementing servant leadership is determined by : (1) the teacher succeeds in increasing pedagogic competence, especially in the understanding and development of students; (2) the principal becomes a role model for the entire school; (3) the quality of the output of competent schools to enter the world of society; (4) the teacher does not hesitate to solve the problems faced with the help of principal

A Multi-Level Analysis of World Scientific Output in Pharmacology

The purpose of this chapter is to analyse international research in “pharmacology, toxicology and pharmaceutics” (hereafter pharmacology) on the basis of the scientific papers listed in the Scopus multidisciplinary database. This primary objective is reached by answering the following questions (in the section on results). What weight does the subject area “pharmacology, toxicology and pharmaceutics” carry in world-wide science? What is the percentage contribution made by the various regions of the world to the subject area “pharmacology, toxicology and pharmaceutics”? Can certain regions be identified as leaders on that basis, as in other scientific contexts? Are emerging countries present in the field? Do the most productive countries also publish the largest number of journals? What features characterise the scientific output of companies that publish pharmacological papers