Comparison of House Spraying and Insecticide-Treated Nets for Malaria Control.

The efficacies of using residual house spraying and insecticide-treated nets against malaria vectors are compared, using data from six recent comparisons in Africa, Asia and Melanesia. By all the entomological and malariological criteria recorded, pyrethroid-treated nets were at least as efficacious as house spraying with dichlorodiphenyltrichloroethane (DDT), malathion or a pyrethroid. However, when data from carefully monitored house spraying projects carried out between the 1950s and 1970s at Pare-Taveta and Zanzibar (United Republic of Tanzania), Kisumu (Kenya) and Garki (Nigeria) are compared with recent insecticide-treated net trials with apparently similar vector populations, the results with the insecticide-treated nets were much less impressive. Possible explanations include the longer duration of most of the earlier spraying projects and the use of non-irritant insecticides. Non-irritant insecticides may yield higher mosquito mortalities than pyrethroids, which tend to make insects leave the site of treatment (i.e. are excito-repellent). Comparative tests with non-irritant insecticides, including their use on nets, are advocated. The relative costs and sustainability of spraying and of insecticide-treated net operations are briefly reviewed for villages in endemic and epidemic situations and in camps for displaced populations. The importance of high population coverage is emphasized, and the advantages of providing treatment free of charge, rather than charging individuals, are pointed out

An inequality of Kostka numbers and Galois groups of Schubert problems

We show that the Galois group of any Schubert problem involving lines in projective space contains the alternating group. Using a criterion of Vakil and a special position argument due to Schubert, this follows from a particular inequality among Kostka numbers of two-rowed tableaux. In most cases, an easy combinatorial injection proves the inequality. For the remaining cases, we use that these Kostka numbers appear in tensor product decompositions of sl_2(C)-modules. Interpreting the tensor product as the action of certain commuting Toeplitz matrices and using a spectral analysis and Fourier series rewrites the inequality as the positivity of an integral. We establish the inequality by estimating this integral.Comment: Extended abstract for FPSAC 201

Rancang Bangun Sistem Pemantauan Jarak Jauh Denyut Nadi, Saturasi Oksigen, dan Suhu Tubuh pada Orang Sakit di Rumah

Denyut nadi adalah gelombang yang dirasakan pada arteri yang diakibatkan karena pemompaan darah oleh jantung menuju pembuluh darah. Terdapat beberapa faktor yang menyebabkan denyut nadi berubah seperti perubahan tekanan darah, perubahan saturasi oksigen, dan perubahan suhu tubuh. Denyut nadi, saturasi oksigen, dan suhu tubuh memiliki alat pengukurnya sendiri dan tidak dapat membaca yang lainnya. Tidak semua orang memiliki alat untuk mengukur komponen-komponen vital kecuali untuk menemui dokter atau melakukan checkup di rumah sakit. Di tengah pandemi ini, banyak orang yang terjangkit virus Corona sehingga banyak rumah sakit kehabisan tempat tidur untuk pasiennya. Oleh sebab itu, berdasarkan rekomendasi dokter melalui Kementrian Kesehatan membuat panduan dan peraturan untuk isolasi mandiri (isoman). Karena pasien isoman tidak dijaga oleh dokter ataupun petugas kecuali pasien bersama keluarga atau memiliki gejala yang tergolong berat, maka diperlukan alat pemantauan kesehatan jarak jauh agar dokter dapat memeriksa pasien yang sedang isoman tanpa harus mengunjungi secara fisik. Alat didesain dengan menggunakan microcontroller NodeMCU ESP 8266, sensor pulse MAX30100, sensor suhu LM35, dan modul display SSD1306. Alat tersebut dibuat dalam bentuk seperti jam tangan agar pengguna dapat mudah melihat ke tangannya untuk melihat ke smartphone. Alat tersebut terhubung ke Firebase Cloud untuk melakukan pengiriman data ke smartphone agar pengguna dan keluarga dapat memonitor keadaan pengguna. Sebelum melakukan pengujian, dilakukan kalibrasi untuk mengurangi nilai error saat pengujian. Setelah dilakukan kalibrasi, didapatkan nilai sebesar enam belas poin untuk denyut nadi/ beat per minute (BPM) dan tiga point untuk saturasi oksigen (SPO). Hasil pengujian dari alat adalah rata-rata error untuk BPM sebesar 4.02% dan 0% untuk SPO sedangkan untuk sensor LM35 memiliki nilai error dengan rata-rata sebesar 11.74%. Dari hasil pengujian, dapat disimpulkan bahwa telah dirancang alat untuk memonitoring denyut nadi, saturasi oksigen, dan suhu tubuh jarak jauh. Hasil pembacaan sensor untuk suhu masih belum akurat dan data dapat terkirim ke Firebase dan diterima oleh smartphone dengan berhasil

Geometric Cross-Modal Comparison of Heterogeneous Sensor Data

In this work, we address the problem of cross-modal comparison of aerial data streams. A variety of simulated automobile trajectories are sensed using two different modalities: full-motion video, and radio-frequency (RF) signals received by detectors at various locations. The information represented by the two modalities is compared using self-similarity matrices (SSMs) corresponding to time-ordered point clouds in feature spaces of each of these data sources; we note that these feature spaces can be of entirely different scale and dimensionality. Several metrics for comparing SSMs are explored, including a cutting-edge time-warping technique that can simultaneously handle local time warping and partial matches, while also controlling for the change in geometry between feature spaces of the two modalities. We note that this technique is quite general, and does not depend on the choice of modalities. In this particular setting, we demonstrate that the cross-modal distance between SSMs corresponding to the same trajectory type is smaller than the cross-modal distance between SSMs corresponding to distinct trajectory types, and we formalize this observation via precision-recall metrics in experiments. Finally, we comment on promising implications of these ideas for future integration into multiple-hypothesis tracking systems.Comment: 10 pages, 13 figures, Proceedings of IEEE Aeroconf 201