33,418 research outputs found
Implementasi Algoritma K-nearest Neighbors untuk Menentukan Kemungkinan Tingkat Ketercapaian Kompetensi Pembelajaran Keterampilan Komputer dan Pengelolaan Informasi
Nilai keterampilan komputer, nilai matematika dan bahasa Inggris pada saat kelas 3 SMP yang tersimpan dalam basis data digunakan untuk menentukan tingkat ketercapaian kompetensi pembelajaran Keterampilan Komputer dan pengelolaan Informasi (KKPI) di kelas I SMK pada masa lampau. Nilai keterampilan komputer, nilai matematika dan bahasa Inggris pada masa sekarang digunakan untuk menentukan kemungkinan tingkat ketercapaian kompetensi pembelajaran KKPI di kelas I SMK pada masa sekarang sebagai informasi untuk meminimalisir dan mendiagnosa awal faktor-faktor yang bisa diantisipasi lebih dini. Sistem digunakan sebagai salah satu media komunikasi antar guru pembina dan guru muda dalam mengelola pembelajaran. Algoritma K-Nearest Neigbohr digunakan untuk menentukan kemiripan kondisi masa lampau dan kondisi sekarang dengan menggunakan rumus similarity. Kasus sekarang dibandingkan kasus lampau kemudian diukur similarity-nya. Nilai similarity tertinggi menunjukkan kemiripan antara kasus yang dibandingkan, sehingga menjadi dasar pengambilan kesimpulan kemungkinan tingkat pencapaian kompetensi. Hasil penelitian menunjukkan sistem dapat menghitung nilai similarity dan membuat kesimpulan kemungkinan pencapaian tingkat kompetensi KKPI berdasarkan pada nilai keterampilan komputer, nilai matematika dan bahasa Inggris. Sistem dapat digunakan sebagai model komunikasi guru muda dan guru pembina dalam proses pembelajaran
Aturan Asosiasi Varian Bakat Kecerdasan terhadap Prestasi Akademik Menggunakan Algoritma Apriori
Terdapat delapan bakat kecerdasan mahasiswa masing-masing adalah linguistik, logis-matematik, musikal, interpersonal, intrapersonal, kinestetik tubuh, visual-spasial dan naturalis. Pada dasarnya besaran bakatan kecerdasan yang proporsional akan berpengaruh pada kesuksesasan seseoarang. Salah satu ukuran keberhasilan adalah perolehen prestasi akademik. Mengukur perolehan bakat kecerdasan dan menganalisisnya pengaruhnya terhadap prestasi akademik dilkaukan dalam penelitian ini. Secara kuantitatif besaran pengaruh kombinasi delapan bakat kecerdasan mahasiswa terhadap prestasi akademik dilakukan dalam penelitian ini menggunakan algoritma apriori. Dipilih kombinasi-kombinasi yang relevan kemudian dilakukan penghitungan frekuensi, nilai support dan konfidens. Dimodelkan dan dimplementasikan basis data relasional sebagai representasi sistem kemudian di buatkan antar muka untuk basis data tersebut. Diperoleh kombinasi-kombinasi item set bakat kecerdasan dan prestasi akademik yang relevan dengan nilai kebenaran yang paling menjanjikan kemungkinan nilai kebenaran pengaruhnya mealui nilai support dan konfidens. Kombinasi tiga item set visual spasial, kinestetik tubuh terhadap prestasi akademik dengan perolehen Sangat Memuaskan Kombinasi empat item set Intrapersonal, linguistik, kinestetik tubuh, visual spasial terhadap prestasi akademik Sangant Memuaskan Kombinasi lima item set Intrapersonal, Kinestetik-Tubuh, Visual-spasial, Naturalis terhadap prestasi akademik Sangat Memuaska
Investigation of electrical properties for cantilever-based piezoelectric energy harvester
In the present era, the renewable sources of energy, e.g., piezoelectric materials are in great demand. They play a vital role in the field of micro-electromechanical systems, e.g., sensors and actuators. The cantilever-based piezoelectric energy harvesters are very popular because of their high performance and utilization. In this research-work, an energy harvester model based on a cantilever beam with bimorph PZT-5A, having a substrate layer of structural steel, was presented. The proposed energy scavenging system, designed in COMSOL Multiphysics, was applied to analyze the electrical output as a function of excitation frequencies, load resistances and accelerations. Analytical modeling was employed to measure the output voltage and power under pre-defined conditions of acceleration and load resistance. Experimentation was also performed to determine the relationship between independent and output parameters. Energy harvester is capable of producing the maximum power of 1.16 mW at a resonant frequency of 71 Hz under 1g acceleration, having load resistance of 12 k Omega. It was observed that acceleration and output power are directly proportional to each other. Moreover, the investigation conveys that the experimental results are in good agreement with the numerical results. The maximum error obtained between the experimental and numerical investigation was found to equal 4.3%
Recommended from our members
Evaluating e-Government services from a citizens' prespective: A reference process model
Evaluating and optimizing e-government services is imperative for governments especially due to the capacity of e-services to transform public administrations and assist the interactions of governments with citizens, businesses and other government agencies. Existing widely applied evaluation approaches neglect to incorporate citizensâ satisfaction measures. Several citizen satisfaction models and indicators have been suggested in academia; however a reference process model that can assist practitioners to apply these performance measures is missing. In this paper we draw upon the evaluation approach proposed by the EU funded project CEES and propose a reference process model that captures re-usable practices for e-government evaluation from a citizensâ perspective. The novelty of the proposed approach is that using DEA for evaluating the e-services the assessment results in suggestions for strategic improvement of the e-services.EU FP7 Marie Curie People Project âCEES - Citizen oriented Evaluation of E-Government Systemsâ (reference IAPP-2008-230658
Magnetoacoustics of the Low-Dimensional Quantum Antiferromagnet Cs2CuCl4 with Spin Frustration
We report on results of sound-velocity and sound-attenuation measurements in the triangular-lattice spin-1/2 antiferromagnet CsâCuClâ (T<sub>N</sub> = 0.6 K), in external magnetic fields up to 14 T, applied along the <em>b</em> axis, and at temperatures down to 300 mK. The results are analyzed with a quasi-two-dimensional hard-core boson theory based on exchange-striction coupling. There is a good qualitative agreement between theoretical and experimental results.Citation: Sytcheva, A. et al. (2010). 'Magnetoacoustics of the low-dimensional quantum antiferromagnet CsâCuClâ', Journal of Low Temperature Physics, 159(1-2), 109-113. [Available at http://www.springer.com/materials/journal/10909]. © The Authors 2010. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any non-commercial use, distribution, and reproduction in any medium, provided the original authors and source are credited.
Appraisal of ethnobotanical uses of the wetland plants of Punjab, Pakistan
Background: Aquatic and semiaquatic plants have a multiplicity of traditional and ethnopharmacological uses ranging from medicinal, famine food to fodder and others. Therefore, the present study was carried out during the years 2008-2011 to document the locally used medicinal, ethnobotanical and traditional data of aquatic and semiaquatic plants of the Punjab, Pakistan.Material and Method: Various visits of the study area were made to collect the data of these plants included local name, habit and habitat with special emphasis on their therapeutic uses against different human ailments. The local elderly, knowledgable people and herbal healers were also interviewed during the visits.Results: A total of thirty-four aquatic and semiaquatic plants were collected and out of these, eighteen plants belonging to the three monocotyledonous and fourteen dicotyledonous families were reported to medicinal and food value as well as found useful in making ropes, mats, baskets and soil binding.Conclusion: The wetland of Punjab (Pakistan) possesses a variety of medicinal plants that are being utilized against various human diseases, e.g.Respiratorial, dermatological, gastrontological, neurological and cardio-vascular diseases.Key Words: Ethnobotanical uses, wetland plants, and herbal medicines
Perangkat Lunak Berbasis Web Sebagai Modul Evaluator Mata Kuliah Perancangan Basis Data
Bentuk kreativitas dalam proses pembelajaran, salah satunya dengan memanfaatkan teknologi informasi untukkegiatan UAS, menggunakan perangkat lunak modul evaluator. Sesuai esnsinya UAS sebagai salah satu bentukevaluasi memiliki beberapa fungsi diantarnya fungsi selektif, diagnostik, penempatan dan pengukurankeberhasilan. Tetapi juga proses ujian, yang dihadiri dosen pengampu, sebagai proses pembelajaran,setidaknya merupakan pelaksanaan pengajaran, secara implisit menyertakan model pengajaran facilitator dandelegator. Apresiasi dan eksplorasi hasil ujian dapat dilakukan sesaat setelah kegiatan tes diselenggarakandiharapkan dapat menjadi kesimpulan akhir pembelajaran. Keseluruhan proses ujian selain dapat dimanfaatkanuntuk melaksanakan pembelajaran, juga menanamkan nilai-nilai prestasi, kompetensi, kejujuran, independensi,kepribadian,komitmen, transparansi dan pemanfaatan IT dalam proses evaluasi
Antécédents culturaux et identification de quelques pratiques paysannes en replantation cacaoyÚre en CÎte d'Ivoire
La CĂŽte dâIvoire est le premier producteur mondial de cacao, avec plus de 1700 000 tonnes. Cette performance a Ă©tĂ© atteinte, principalement, par lâaccroissement des superficies cultivĂ©es aux dĂ©pends de la forĂȘt. LâenquĂȘte a concernĂ© les parcelles de cacaoyers de moins de 5 ans (0-5 ans) et chaque producteur a Ă©tĂ© enquĂȘtĂ© individuellement, chacun sur sa parcelle, afin de confronter les rĂ©ponses aux observations de terrain. Les rĂ©sultats des enquĂȘtes effectuĂ©es, entre 2002 et 2003, par le projet PIC-CACAO, montrent que trois types dâantĂ©cĂ©dents culturaux sont actuellement utilisĂ©s pour la culture du cacaoyer en CĂŽte dâIvoire. Il sâagit des vieilles cacaoyĂšres, des vieilles cafĂ©iĂšres et des jachĂšres, moins favorables Ă la culture du cacaoyer. Face aux contraintes rencontrĂ©es au cours du renouvellement du verger cacaoyer sur ces antĂ©cĂ©dents, les producteurs ont, soit adoptĂ© des techniques proposĂ©es par la recherche, soit adaptĂ© certaines de leurs pratiques endogĂšnes aux nouvelles conditions écologiques et naturelles du milieu. Les adoptions ont concernĂ©s lâutilisation de matĂ©riel vĂ©gĂ©tal amĂ©liorĂ©, issu des pĂ©piniĂšres, sur les jachĂšres. Quant aux adaptations, elles se sont traduites par la pratique de fortes densitĂ©s de plantation de jeunes cacaoyers et par la densification de lâombrage.Mots clĂ©s: Cacaoyer, antĂ©cĂ©dents culturaux, adoptions, adaptations, CĂŽte dâIvoireEnglish Title: Cropping history and identification of some farmer pratices in cocoa replanting in CĂŽte dâIvoireEnglish AbstractCĂŽte dâIvoire is the first producer of cocoa worldwide with more than 1700 000 tons. This performance was reached, mainly, by the increase of acreages at the expense of the forest. The investigation concerned the cocoa plots under 5 years (0-5 years) and each producer was investigated individually, each on his plot in order to compare his responses with field observations. The results of the investigations carried out, between 2002 and 2003, by PIC-cacao project, show that three types of antecedents are currently used for the culture of the cocoa-tree. They are the old cocoa plantations, the old coffee plantations and the fallow, less favourable of the cultivation of cocoa. Faced with the constraints during the renewal of the cocoaorchard on these antecedents, producers adopted techniques proposed by research or adapted some endogenous practices to the new ecological and natural conditions of the environment. The adoptions related to the use of vegetable material improved and nurseries on the fallow. As for the adaptations, they resulted in the use of high densities of plantation of young cocoa-trees and to the thickening of the shade.Keywords: Cocoa-orchard (Theobroma cacao L.), farming antecedents, adoptions, adaptations, CĂŽte dâIvoir
An Integer Programming Approach to the Student-Project Allocation Problem with Preferences over Projects
The Student-Project Allocation problem with preferences over Projects (SPA-P) involves sets of students, projects and lecturers, where the students and lecturers each have preferences over the projects. In this context, we typically seek a stable matching of students to projects (and lecturers). However, these stable matchings can have different sizes, and the problem of finding a maximum stable matching (MAX-SPA-P) is NP-hard. There are two known approximation algorithms for MAX-SPA-P, with performance guarantees of 2 and 32 . In this paper, we describe an Integer Programming (IP) model to enable MAX-SPA-P to be solved optimally. Following this, we present results arising from an empirical analysis that investigates how the solution produced by the approximation algorithms compares to the optimal solution obtained from the IP model, with respect to the size of the stable matchings constructed, on instances that are both randomly-generated and derived from real datasets. Our main finding is that the 32 -approximation algorithm finds stable matchings that are very close to having maximum cardinality
- âŠ