Editorial, special issue on “Advances in Robust Statistics”

Starting with 2020 volume, the journal Metron has decided to celebrate the centenary since its foundation with three special issues. This volume is dedicated to robust statistics. A striking feature of most applied statistical analyses is the use of methods that are well known to be sensitive to outliers or to other departures from the postulated model. Robust statistical methods provide useful tools for reducing this sensitivity, through the detection of the outliers by first fitting the majority of the data and then by flagging deviant data points. The six papers in this issue cover a wide orientation in all fields of robustness. This editorial first provides some facts about the history and current state of robust statistics and then summarizes the contents of each paper.status: publishe

A REVIEW: ZINC AS AN ANTIVIRUS ALTERNATIVE TREATMENT FOR HERPES SIMPLEX VIRUS INFECTION

This study aimed to review zinc's effectiveness as an antivirus in treating herpes simplex virus infection. The authors use international journals published from 2000-2022, and use search engines such as Google Scholar, PubMed, and Science Direct with the keywords "zinc and herpes simplex virus". The herpes simplex virus that often causes symptoms in humans are HSV type 1 and type 2. The lesions appear as vesicles which then rupture into ulcers. Zinc is one of the most abundant nutrients or metals in the human body besides iron. Studies about the effects of zinc on HSV have shown that it has the function of inhibiting the viral life cycle. HSV attaches to the host cells to replicate and synthesize new viral proteins. Zinc can inhibit this process by depositing on the surface of the virion and inactivating the enzymatic function which is required for the attachment to the host cell, disrupting the surface glycoprotein of the viral membrane so it could not adhere and carry out the next life cycle, it can also inhibit the function of DNA polymerase that works for viral replication in the host cell. This article showed that zinc has effectiveness as an antivirus against the herpes simplex virus, therefore, patients infected with HSV can be treated with zinc as an alternative to an antivirus drug

Perancangan Simulasi Antena Mikrostrip dengan Slot Butterfly untuk Aplikasi WiFi pada Frekuensi Kerja 5,8 GHz Menggunakan CST Microwave Studio

Wi-Fi is a technology that is very poluler today. WiFi is an abbreviation of Wireless Fidelity, is a set of standards used for Wireless Local Network (LAN Local Area Networks) whose function is to connect local area networks in a wireless manner. Along with the evolution of telecommunications technology based on wireless technology, then we need for a communication system that can perform high-speed data transmission with good quality. One of the devices supporting wireless communication devices is the antenna. The use and selection of antennas is one of the important factors that affect the performance of the antenna as well as good design and proper installation will ensure the performance of the telecommunications system. Microstrip antenna has the advantages of low profile form, which is easy and inexpensive to produce in mass but has a small gain and bandwidth. This paper discusses the design of the Microstrip antennas patch for WiFi applications that operate at a frequency of 5.8 GHz . In this design uses FR4 epoxy material = 4.4 and a thickness of 1.6 mm, is suitable for application of high-frequency antenna. For the simulation in this paper using the software CST Microwave Studio. From the results of the design using CST studio microvawe is obtained in accordance with the specification antenna, with VSWR ≤ 1.5, gain ≥ 2 dB and return loss ≥ 20 dB

Analisis Rantai Pasokan (Supplay Chain) Pada CV Biojanna Nusantara Karanganyar

The aims of this study are; 1. To obtain forecasting demand according to customer needs, 2. To get the lowest production costs in the design of the CV Biojanna Nusantara, 3. To get the lowest inventory cost on CV Biojanna Nusantara, 4. To get the right transport models in CV Biojanna Nusantara, 5. To generate the application of supply chain management in CV Biojanna Nusantara.This study uses quantitative methods to the modeling system. data collection techniques of observation, interviews, and documents. The data analysis technique used is demand forecasting, aggregate planning, EOQ, transportation, and supply chain management. The results showed demand forecast for the period of 2015 as many as 444 685 bottles, raw materials inventory management requires a fee of Rp 12,371,327,650, the results of Rp 96,784,275 aggregate planning, the management of inventories of finished products amounted to USD 69 140, and the results of the calculation of the transport of Rp 1,017. 053 450. The total cost to run the flow of supply chain management of Rp 13,485,234,515. After compared with the previously applicable calculation will result in a fee of Rp 13,803,224,736 be obtained savings of Rp 317 990 221. The results of this study demonstrate the application of supply chain management can provide cost and time efficien cy, and to improve services to the consumers better, so companies gain higher profits

Determinasi Sumber Kekuasaan Kepala Sekolah, Tingkat Kematangan Guru Dan Gaya Kepemimpinan Kepala Sekolah Terhadap Kinerja Guru SMP Negeri Di Kecamatan Kintamani

Penelitian ini bertujuan untuk mengetahui : (1) Determinasi sumber kekuasaan kepala sekolah, (2) Determinasi tingkat kematangan guru, (3) Determinasi gaya kepemimpinan kepala sekolah, dan (4) Determinasi sumber kekuasaan kepala sekolah, tingkat kematangan guru, gaya kepemimpinan kepala sekolah secara bersama-sama terhadap kinerja guru. Berdasarkan formula warwich dan Lininger,diambil sampel sebanyak 110 orang. Penelitian ini menggunakan rancangan ex-post facto. Data dikumpulkan dengan kuesioner dan lembar observasi. Data dianalisis dengan analisis regresi. Hasil penelitian ini menunjukan bahwa: (1) Terdapat determinasi yang positif dan kontribusi yang signifikan antara sumber kekuasaan kepala sekolah terhadap kinerja guru melalui persamaan garis regresi = 64.137+ 0.566X1 dengan kontribusi 37,0%. dan sumbangan efektif sebesar 21,31%, (2) terdapat determinasi yang positifdan kontribusi yang signifikan tingkat kematangan guru terhadap kinerja guru melalui persamaan garis regresi: = 75,031+ 0.472X2 dengan kontribusi sebesar 35,5% dan sumbangan efektif sebesar 21,28%, (3) terdapatdeterminasi yang positifdan kontribusi yang signifikan gaya kepemimpinan kepala sekolah terhadap kinerja guru melalui persamaan garis regresi = 71,039+ 0.473X3 dengan kontribusi sebesar 37,4% dan sumbangan efektif sebesar 25,20%, dan (4) terdapat determinasi yang positif dan kontribusi yang signifikan secara bersama-sama sumber kekuasaan kepala sekolah, tingkat kematangan guru, dan gaya kepemimpinan kepala sekolah terhadap kinerja guru melalui persamaan garis regresi = 12,133 + 0,326X1 + 0.283X2 + 0.318X3 dengan sumbangan efektif sebesar 67,8%. Kata Kunci : Sumber Kekuasaan Kepala Sekolah, Tingkat Kematangan Guru, Gaya Kepemimpinan Kepala Sekolah, Kinerja Guru This study was aimed at finding out (1) determination of source of principal's authority, (2) determination of level of teacher's maturity, (3) determination of principal's leadership style, and (4) determination of source of principal's authority, level of teacher's maturity, principal's leadership style, simultaneously, toward teacher's performance. Based on Warwich and Lininger formula, 110 teachers were used as the sample. This study used ex-post facto design. The data were collected with questionnaire and observation sheet. The data were analyzed using regression analysis. The results showed that (1) the tendency of source of principal's authority fell into category “Good,” the tendency of level of teacher's maturity fell into category “Good,” the tendency of principal's leadership style fell into category “ Good, and the tendency of teacher's performance fell into category “Good”. (2) There was a positive determination and significant contribution of source of principal's authority toward teacher's performance as shown by regression linear equation Ŷ= 64.137+ 0.566X1 with 37.0% contribution, and 21.31% effective contribution, (3) there was a positive determination and significant contribution of level of teacher's maturity toward teacher's performance as shown by regression linear equation Ŷ= 75.031 + 0.472X2 with 35.5% contribution and 21.28% effective contribution, (4) there was a positive determination and significant contribution of principal's leadership style toward teacher's performance as shown by regression linear equation Ŷ = 71.039 + 0.473X3 with 37.4% contribution and 25.20% effective contribution, and (5) there was a positive determination and significant contribution simultaneously of source of principal's authority, level of teacher's maturity, and principal's leadership style toward teacher's performance as shown by regression linear equation Ŷ = 12.133 + 0.326X1 + 0.283X2 + 0.318X3 with 67.8% effective contribution. keyword : Source of Principal's Authority, Level of Teacher's Maturity, Principal's Leadership Style, Teacher's Performanc

Analisis Kualitas Air dan Daya Tampung Beban Pencemaran Sungai Pesanggrahan di Wilayah Provinsi DKI Jakarta

Pesanggrahan River has important role and function to support human life and ecosystem existing in river area. Daily human activities that utilize river water and then dispose the sewage/waste into Pesanggrahan River can decrease the air quality. This research aims to analyzed the water quality condition of Pesanggrahan River based on physical and chemical water river factors. The analysis was conducted on eight observation points along the Pesanggrahan River in DKI Jakarta Province by testing the air pollution parameters comparing it to the air quality standard of Governmental Regulation No. 82/2001 on Air Quality Management and Air Pollution Control for Class II and Jakarta Governor Regulation No. 582/1995 on the Establishment of the Allocation and Quality Standards of River Water/Raw Water Agency of Liquid Waste Quality Standard in the Special Capital Region of Jakarta for Group C. The parameters observed in this study are 18 and 6 overall physical parameters (temperature and TSS) and parameters chemical (pH, DO, BOD, and COD). Determination of water quality status using pollution index method compared with air quality standard Governmental Regulation No. 82/2001 class II and Jakarta Governor Regulation No. 582/1995 Group C. The air quality condition of Pesanggrahan River from upstream to downstream at eight points of observation has generally decreased quality according to parameters of TSS, DO, BOD and COD which were not fulfill the quality standard. Based on the status of water quality status of Pesanggrahan River from upstream to downstream has decreased quality with mild to moderate pollutant status

Sebaran Spasial Spesies Penyebab Harmful Algal Bloom (Hab) di Lokasi Budidaya Kerang Hijau (Perna Viridis) Kamal Muara, Jakarta Utara, pada Bulan Mei 2011

Telah dilakukan penelitian tentang sebaran spasial spesies HAB di lokasi budidaya kerang hijau (Perna viridis), Kamal Muara, Jakarta Utara pada bulan Mei 2011. Sampel diambil secara vertikal di sembilan stasiun dengan plankton-net. Spesies HAB yang ditemukan berasal dari kelas Dinophyceae (Ceratium furca, Dinophysis caudata, Gonyaulax polygramma, Gonyaulax spinifera, Gymnodinium catenatum, Gymnodinium sanguineum, Prorocentrum micans, dan Prorocentrum sigmoides); Bacillariophyceae (Nitzschia spp., Chaetoceros spp., Skeletonema costatum, dan Thalassiosira spp.) dan Raphidophyceae (Chattonella spp.). Berdasarkan peta isoplank diketahui bahwa sebaran terpadat pada bulan Mei 2011 adalah di stasiun dekat muara

Analisis Studi Kelayakan Usaha Bertani Jagung Manis dan Padi Ditinjau dari Aspek Keuangan di Desa Sanur Kaja Kecamatan Denpasar Selatan Tahun 2014

Penelitian ini merupakan jenis penelitian deskriptif yang bertujuan mengetahui kelayakan usaha budidaya jagung manis dan bertani padi di Desa Sanur Kaja, masalah yang dihadapi petani jagung manis dan petani padi, serta solusi yang ditawarkan. Populasi dalam penelitian ini adalah petani jagung manis dan petani padi yang memiliki catatan pembukuan. Data dikumpulkan dengan dokumentasi dan wawancara yang dianalisis menggunakan analisis kriteria penilaian investasi NPV, IRR, dan pehitungan laba rugi. Hasil penelitian menunjukkan bahwa (1) budidaya jagung manis dan padi masih layak dilaksanakan di Desa Sanur Kaja dengan perhitungan NPV jagung manis sebesar Rp 35.684.922 dan NPV Padi sebesar Rp 52.049.243 di mana keduanya bernilai lebih dari 0; (2) masalah yang dihadapi petani jagung manis dan petani padi di Desa Sanur Kaja yaitu pembagian saluran air dari bendungan dengan jangka waktu satu tahun sekali serta pendapatan petani ditentukan oleh harga jual yang ditentukan oleh pengepul dengan kesepakatan dalam hitungan are; (3) solusi yang ditawarkan yaitu agar petani jagung manis dan petani padi membuat penampungan air ketika mendapat aliran air dari bendungan dan menjual hasil panen berdasarkan jumlah tonase.Kata Kunci : kelayakan usaha, masalah, solusi, bertani This research is the research types of descriptive that is aimed to know the properness of sweet corn cultivation effort and rice plant farmer in Sanur Kaja village, the problems that faced by sweet corn farmer and rice plant farmer along with the solution which is offered. The population of this research is the sweet corn farmer and rice plant farmer who has accountancy note. The data was collected by documentation and interview that is analyzed by the analysis of net present value NPV, IRR, the account of profit and loss along with T-test. The data is processed by using SPSS 16.00 for windows. The research result shows that (1) sweet corn cultivation and rice plant are still proper to conducted in Sanur Kaja village with the NPV account of sweet corn as big as Rp 35.684.922 and rice NPV as big as Rp 52.049.243 in which both of them have values more than 0; (2) the problem that faced by sweet corn farmer and rice plant farmer in Sanur Kaja village is the division or water canal from dam with year range of once a yearhe income of farmer is determined by selling price which is determined by supplier with the agreement with are accounting; (3) the solution that offered is to make the sweet corn farmer and rice plant farmer make a saving water when getting water flow from dam and selling the result of harvest based on the amount of tonnage.keyword : the proper of effort, problem, solution, farmin