1,720,954 research outputs found
PENGARUH BERBAGAI KETEBALAN LAPISAN PASIR PADA PROTOTIPE SARINGAN PASIR LAMBAT TERHADAP PENURUNAN BIOLOGICAL OXYGEN DEMAND (BOD) DAN SHEMICAL OXYGEN DEMAND (COD) AIR SUNGAI
Full text linkAliran air sungai sering dimanfaatkan utnuk pembuangan limbah industri maupun rumah tangga. Hal ini dapat memperburuk keadaan yaitu makin banyaknya kandungan bahan kimia baik organik maupun anorganik. Kondisi ini yang dapat menyebabkan tingginya BOD dan COD air sungai mupun parameter yang lain (SS, DO, dll).
Pada penelitian ini penulis menggunakan ptototipe saringan pasir lambat untuk menurunkan BOD dan COD air sungai yang telah tercemar. Sehingga air hasil penyaringan kemungkinan dapat dimanfaatkan untuk memenuhi kebutuhan air bersih bagi masyarakat yang tinggal di daerah yan gdeka aliran sugnai. Misalnya untuk kebutuhan mencuci dan mandi. Kemungkinan lain juga dapat dimafaatkan utnuk kehidupan ikan.
Pengolahan air sungai dengan melewatkan pada saringan lambat termasuk salah satu cara yang mudah dan murah. Mudah karena tidak memerlukan tenaga ahli dan murah karena bahan baku murah harganya serta tidak menggunakan bahan kimia.
Salah saru faktor yang harus diperhatikan pada saringan pasir lambat adalah ketebalan lapisan pasir. Pada penelitian ini penullis menggunakankeetebalan lapisan pasi 50 cm, 75 cm, dan 100 c, untuk menyaring air sungai.
Saringan pasir lambat ini dapat digunakan utnuk menurunkan idikator pencemaran air sungai yaitu BOD dan COD. Dengan persentase penurunan BOD max. 85,31% dan min. 18,95% sedang penurunan COD max 59,66% dan min. 22,81%.
Dan hipotesa yang menyatakan bahwa ada perbedaan penurunan BOD dan COD pada sringan pasir lambar dengan ketebalan lapisan pasir yang berbeda juga telah terbukti (dengan uji ANAVA).
Selajutnua dengan uji-t telah terbukti secara bermakna pada tingkat significansi 5% adanya perbedaan penurunan BOD dan COD diantara ketiga saringan pasir lambat dengan ketebalan pasir yang berbeda. Yaitu penurunan BOD pada ketebalan lapisan pasir 100cm lebih besar dari pada 75 cm, 75 cm lebih besar dari pada 50cm dan 100 cm lebih besar dari 50 cm.
Terjadinya penurunan BOD dan COD air sungai setelah dilewatkan pada saringan pasir lambat adalah karena pengaruh mekanisme penyaringan pada saringan pasir lambat yaitu pada aktifitas trasport mechanism (mekanisme trasport) dan attacment mechanism (mekanisme penurnian).
Kata Kunci: PASIR DAN SUNGA
The Feasibility of COVI Srondol as a Monitoring and Evaluation Strategy of Post-Competency Development to Accelerate Central Java Corporate University
No full textThe monitoring and evaluation (M&E) of post-competency development (postcomdev) are essential for assessing its benefits and impacts, typically conducted by training organizers. A prior survey found that most health human resources (HR) participants created follow-up plans under their supervisors' guidance and documented their involvement using simple checklists. However, there is no systematic monitoring of post-comdev, nor are there updated procedures in place. To address these issues, COVI Srondol (Collaboration for monitoring and evaluation of post-competency development, a Strategy supported by Information and Technology, initiated in Srondol) will be designed as an alternative approach. This research explores the feasibility of developing the COVI Srondol strategy as a guideline for post-comdev M&E in accelerating the Central Java Corporate University (Jateng Corpu). Using a mixed-method approach, the authors identified the M&E models applied in 36 health offices, across Central Java and integrated them with qualitative analysis results from selected informants using purposive and snowball sampling techniques. The findings indicate that, despite a limited understanding of Jateng Corpu among informants, 50% agreed that post-comdev M&E could accelerate its development. While most health HR informants (64%) conducted post-comdev evaluations, these did not fully assess effectiveness or impact. Institutions such as the Regional Civil Service Agency (BKD), the Central Java Regional Human Resources Development Agency (BPSDMD), and the Health Training Center (Bapelkes) perform annual evaluations but lack proper monitoringmechanisms. Thus, the COVI Srondol strategy presents an opportunity to bedeveloped as a comprehensive framework to enhance post-comdev M&E, ultimately supporting Jateng Corpu
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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