scholarly journals Technical efficiency of pesticide application on tomato, chinese cabbage and cauliflower in simpang empat sub-district Karo Regency

2018 ◽  
Vol 52 ◽  
pp. 00045
Author(s):  
Sri Fajar Ayu ◽  
Destanul Aulia
Keyword(s):  
Technical Efficiency ◽  
Chinese Cabbage ◽  
Quantitative Method ◽  
Protective Device ◽  
Test Results ◽  
Pesticide Application ◽  
Vegetable Farmers ◽  
The Right ◽  
North Sumatra ◽  
Mild Toxicity

Prior research by authors on the use of pesticides and their impact on 75 vegetable farmers in Simpang Empat subdistrict, Karo district, North Sumatra showed that 60% of respondents applied pesticides in excess of the packaging instructions. Respondents were also found not to use a complete protective device. Almost 70% of respondents have mild toxicity complaints, and based on blood cholinesterase levels are also found most respondents have mild toxicity. Pesticide residue test results also found 0.728 residues of chlorpyrifos and 0.321 profenofos in vegetables produced in this area. This led to continued review by checking the technical efficiency in the use of pesticides. The method used is a quantitative method with the Data Envelope Analysis (DEA) approach to analyze technical efficiency of pesticide on each commodity. The population is the whole vegetable farmer who grew tomatoes, Chinese cabbage and cauliflower at the time of the study. The entire population is used to be a sample of 35 tomato and cauliflower farmers and 20 Chinese cabbage farmers. The results of the study indicate that the uses of pesticide as production inputs on tomato commodities, Chinese cabbage and cauliflower are not technically efficient. It is suggested to farmers to use pesticide input according to the rules, proper dosage, on target, on time, the right way so that pesticide used is technically efficient.

scholarly journals Certification tests of a protective device such as ROPS to ensure safe usage of tractors

2018 ◽  
Vol 224 ◽  
pp. 02061
Author(s):  
Irina Troyanovskaya ◽  
Anton Kalugin
Keyword(s):  
Strain Curve ◽  
Protective Device ◽  
Test Results ◽  
Experimental Procedure ◽  
Structure Deformation ◽  
Safety Requirements ◽  
Performance Check ◽  
Protective Structures ◽  
Full Scale Tests ◽  
Tractor Plant

According to the safety requirements, all protective devices of tractor units are subject to obligatory certification. One of the main means of protecting the operator during overturning is ROPS system. In accordance with GOST (National State Standard), a performance check of ROPS protective structures is carried out on basis of full-scale tests. The purpose of the presented study is to develop the experimental procedure and to obtain the performance check result of ROPS protective device of the tractor unit’s cabin using B10 bulldozer manufactured by the Chelyabinsk Tractor Plant as an example. The tests were carried out at the Ural Test Center NATI. For this purpose, a special bedplate was used, allowing to test the protective cabins of tractors with the total mass of up to 110 tons. The hydraulic system of the bedplate allowed to carry out the process of lateral loading of ROPS step by step, where each step corresponded to the 10 mm structure deformation. The applied load and structure deformation were recorded at each step. The energy accumulated by the structure was calculated as the area under the stress-strain curve. The energy U = 40867 J, which was required according to GOST, was accumulated during lateral deformation Δ = 270 mm. The force constituted Fy = 243 kN. After removing the lateral load, the structure was subjected to the vertical static and longitudinal loading. During the whole experiment of ROPS protective device, repairs, deformation corrections and adjustments were not allowed. The test results of ROPS structure of B10 bulldozer cabin showed compliance with the GOST safety requirements. During ROPS deformation, penetration of the protective structure elements into the driver’s limited zone was not observed.

Friction-Instability: A New Design Parameter for Brakes

1971 ◽  
Vol 93 (4) ◽  
pp. 1225-1228 ◽  
Author(s):  
W. L. Starkey ◽  
T. G. Foster ◽  
S. M. Marco
Keyword(s):  
Quality Control ◽  
Coefficient Of Friction ◽  
Design Parameter ◽  
Control Device ◽  
Experimental Facility ◽  
Test Results ◽  
Effective Manner ◽  
The Coefficient Of Friction ◽  
Brake Lining ◽  
The Right

A new design parameter, friction-instability, is defined in this paper. Friction-instability is a variation in the coefficient of friction which may occur at any time during the life of a brake lining. A friction-index is defined which measures this variation. A lining which has a high friction index may tend to cause an automobile to swerve either to the right or to the left. A unique experimental facility is described by means of which the friction-instability characteristics of brake linings can be measured. Test results using this facility are presented and interpreted. The friction-index is proposed as a new parameter which should be taken into consideration when brakes are designed and, developed. This index should be particularly useful as a quality control device to insure that machines which use mass-produced braking systems will perform in a safe and effective manner.

scholarly journals Pengaruh Likuiditas, Leverage, Aktivitas, dan Profitabilitas terhadap Nilai Perusahaan pada Sektor Barang Konsumsi yang Terdaftar Di Bursa Efek Indonesia Periode 2015-2018

2020 ◽  
Vol 20 (3) ◽  
pp. 919
Author(s):  
Anju Galingging ◽  
Fery Xaverius Aritonang ◽  
Herlina Novita
Keyword(s):  
Linear Regression ◽  
Multiple Linear Regression ◽  
Consumer Goods ◽  
Firm Value ◽  
Research Method ◽  
Quantitative Method ◽  
Stock Exchange ◽  
Test Results ◽  
Activity Variable ◽  
Independent Variable

The purpose of this study is to determine and analyze the effect of Liquidity, Leverage, Activity, and Profitability on Firm Value in the Consumer Goods Sector Listed on the Indonesia Stock Exchange for the period 2015-2018. This study uses a quantitative method with a desciptive type. The population of this study is the Consumer Goods Sector that is listed on the Indonesia Stock Exchange for the 2015-2018 period, as many as 50 companies. Sampling using purposive sampling and obtained a research sample of 60 samples from 15 sectors of consumer goods multiplied by 4 years. This research method uses multiple linear regression. The coefficient test results obtained from the Adjusted R Square value are 3.7%, which means that the variation in the Firm Value variable described by the independent variable is 96.3%. The research results simultaneously show that liquidity, leverage, activity, and profitability have no effect on firm value. Meanwhile, partially it shows that liquidity, leverage, and profitability have no and insignificant effect on firm value, but for the activity variable has a significant effect on firm value.

scholarly journals The desire of power: Candidate ambiguity and incumbent monopoly in local leaders’ election

2020 ◽  
Vol 33 (3) ◽  
pp. 286
Author(s):  
Erond L. Damanik
Keyword(s):  
Political Party ◽  
Logical Consequence ◽  
The Political ◽  
Management Board ◽  
Study Approach ◽  
General Elections ◽  
The Right ◽  
North Sumatra ◽  
Depth Interviews ◽  
Local Leaders

This study explores and discusses the phenomenon of a single candidate in the local leaders’ election or Pemilihan Kepala Daerah (Pilkada) in Deli Serdang Regency, North Sumatra Province, in 2018. The study is motivated by the phenomenon of a single candidate in the local leaders’ election. In Deli Serdang, the local leaders’ election should have a multi-candidate pattern, either independent or 3-4 political party candidates. This study has focused on the mechanism of the emergence of a single candidate. According to Dahl, the theoretical approach is the candidacy mechanism, and according to Norris, the significance of the right to vote. The study was conducted qualitatively with an ongoing explorative, independent, and case-oriented study approach. The data collected through in-depth interviews with nine key informants consisting of the Political Party Branch Management Board or Dewan Pimpinan Cabang (DPC), the General Elections Commission or Komisi Pemilihan Umum (KPU), the Election Supervisory Committee or Panitia Pengawas Pemilihan (Panwaslih), independent, failed, and incumbent candidates. The sixteen secondary informants consisted of eight voting behaviors and eight non-voting behaviors randomly selected and interviewed to determine their perception of a single candidate. The study found that a single candidate is the logical consequence of ambiguity in an internal political party candidacy. The study’s novelty is the exclusion of incumbent ruling candidates incentivizing a political party monopoly to ensure victory in contestation. The study concluded that the dysfunction of the candidacy and exclusion in power has implications for a single candidate in the local leaders’ election. Contestation with a single candidate’s presence is an uncontested election, and it is contrary to the theoretical paradigm referred to in this study.

scholarly journals Language Choice in Azerbaijani Context: A Sociolinguistic perspective

2020 ◽  
Vol 23 (4) ◽  
pp. 76-89
Author(s):  
Narmin Rzayeva ◽  
Ilham Tagiyev ◽  
Azad Mammadov
Keyword(s):  
Data Analysis ◽  
Experimental Work ◽  
Quantitative Method ◽  
Language Choice ◽  
Medium Of Instruction ◽  
International Language ◽  
The Right

This study deals with the issue of language choice from sociolinguistic perspectives. The problem of multilingualism and plurilingualism in sociolinguistics occupies a special field for the study and evokes the interest of most linguists. The goal of the research was to investigate language choice from sociolinguistic perspectives. This experimental work was carried out to verify the right choice of language (English, Russian, and Azerbaijani) and to identify its effectiveness, the data were processed and interpreted based on analysis. Special attention was paid to the multilingualism / plurilingualism issues and multilingualism in Azerbaijan separately. This paper presents the results of the quantitative method for sociolinguistic research in language. It was based on the interviews that were conducted among parents in order to learn their tendency to bring up their children in a multilingual society. Thus, parents were interviewed in different schools with Russian, Azerbaijani and English mediums of instruction; a school with Azerbaijani medium of instruction named as “Zangi” lyceum, a school with Russian medium named as “N_12”, a school with English medium called as “Baku-Oxford School”. This paper is an in-depth, multidimensional study of such choices in language. The results of the data analysis affirm a solid status of English as an international language in Azerbaijan and emphasize an undeniable position of the Azerbaijani language as well.

scholarly journals Monitoring System of The Temperature for Mini Fish Storage using Internet of Things

2021 ◽  
Vol 324 ◽  
pp. 01011
Author(s):  
Eko Prayetno ◽  
Tonny Suhendra ◽  
Jeremya Lukmanto Saputra
Keyword(s):  
Internet Of Things ◽  
Human Brain ◽  
Monitoring System ◽  
Room Temperature ◽  
High Protein ◽  
Test Results ◽  
Error Level ◽  
The Right ◽  
Monitoring Temperature

Fish is one of the high-protein foods that are very helpful for the development of the human brain. Then, it is necessary to maintain the freshness of the fish for consumption. At this time, fishers and fishmongers preserve the freshness of fish by using Ice in the fish storage. However, it is considered ineffective due to improper ice change time. Therefore, monitoring temperature is very important and helpful to find the right time when replacing the Ice used to ensure the quality of fish. The development of this device uses Arduino ESP32, DHT21 Sensor, Micro SD Module, Internet of Things system, monitoring using Blynk Application and notifications using Telegram App. DHT21 sensor test results obtained a data conformity level (Error Level) of 2%. At the fish storage room temperature, there is the lowest temperature of 10.50 oC and ice temperature conditions in the storage of 0 oC. Therefore, the best state to keep fish fresh that researchers want is 0 oC to 2 oC at ice temperatures or 11.50 oC obtained in testing the time it takes to replace Ice by about 10 hours.

scholarly journals Teaching Sociolinguistics with Dialectometry to Identify Language in Contact of Certain Region

ELT-Lectura ◽  
2016 ◽  
Vol 3 (2) ◽  
Author(s):  
Vina Fathira
Keyword(s):  
Quantitative Method ◽  
Language Mapping ◽  
Phonetic Transcription ◽  
West Sumatra ◽  
North Sumatra

The dialectometry is one way in analyzing language in contact focusing on the similarities anddifferences of language. Linguistics Students in Indonesia were expected to be able in identifying the languagein contact. This study sees Rokan Hulu object to study as one of interesting regencies in Riau Province inIndonesia lies among 3 regions having 3 different ethnics’ languages such as: West Sumatra Province withMinangese language, North Sumatra Province with Bataknese/Mandailing language, and Bengkalis Regencywith Malay language. This study aims at identifying language in contact of using dialectometry. Qualitativemethod employed in this study followed by quantitative method in calculating data. This study was conductedin Rokan Hulu Regency by 21 observation spots. In collecting data, questionnaire of Swadesh consisting of200 words had been recorded, transcribed in phonetic transcription, and drawn in language mapping. Theresult showed that the identification of language in contact by using dialectometry calculation was easy toidentify language in contact. Then, the language in contact in Rokan Hulu Regency was dominated by Malaylanguage and Mandailing language. It means that, there is only one language in Rokan Hulu Regency calledMalay-Mandailing language.

scholarly journals Implementasi UML Dan Grennfoot Untuk Membangun Aplikasi Pengucapan Bahasa Inggris

2019 ◽  
Vol 1 (2) ◽  
Author(s):  
Wire Bagye
Keyword(s):  
English Language ◽  
Native Speakers ◽  
Native Speaker ◽  
Object Oriented Programming ◽  
English Learning ◽  
Test Results ◽  
Recording Material ◽  
English Pronunciation ◽  
Black Box Testing ◽  
The Right

One of the materials in the English Language course is listening, namely the skill of hearing the pronunciation of English sentences. Learning listening must use native speaker or recording material so that the pronunciation is heard according to the original. If you use the course participants as a sound source, there is a high probability of mistakes in the pronunciation of words or sentences. Then an application is needed to help with course activities as tutors or native speakers in giving correct English pronunciation. In this research, English Pronunciation Application was built using the Greenfoot Application with the object oriented programming concept. This application is to help pronoun learning that can output audio when the object clicked. The development method uses SDLC, application modeling uses UML and testing using Black-box testing. The English pronunciation application is compiled into a .jar file so that it can be run on a computer with a Windows operating system that has JDK installed. The test results show that this English learning application can replace tutors, produce the right audio, and can replace native speakers. This can be seen from the results of the questionnaire showing 82%.

scholarly journals Bandung’s Image as a Tourist Destination: An Application of Quantitative and Qualitative Approach

2019 ◽  
Vol 1 (01) ◽  
Author(s):  
Agustinus Februadi ◽  
Nono Wibisono ◽  
Dewi Purnamasari
Keyword(s):  
Factor Analysis ◽  
Quantitative Analysis ◽  
Quantitative Method ◽  
Qualitative Approach ◽  
Tourist Destination ◽  
Nature Tourism ◽  
Scenic Beauty ◽  
Qualitative And Quantitative ◽  
The Right ◽  
Functional Attribute

Bandung is a popular tourist destination in Indonesia and a gateway for tourists who visit destinations around greater Bandung areas. Currently, Bandung is also known as a culinary, shopping, and nature tourism destination. Past studies have measured the image of Bandung as a tourist destination. However, the measurements were done partially due to the use of quantitative method only. Thus, the results were not comprehensive. To resolve the drawbacks of the previous studies, this study used both qualitative and quantitative approaches. Data were collected from 430 domestic tourists by ways of structured and unstructured interviews in 20 different destinations in Bandung and the surrounding. Data were processed by descriptive statistical methods, factor analysis and content analysis. The results of quantitative analysis show that, in term of functional-attribute, Bandung was positively perceived as a destination characterized with natural scenic beauty, many interesting places, and various exotic foods. In terms of the psychological-attribute, Bandung was perceived as the right place for shopping and culinary tourism. The results of qualitative analysis indicate that, functionally, Bandung was a destination with natural scenic beauty, pleasant weather and provide various exotic foods. Psychologically, the tourists experienced calm and tranquil atmosphere, happiness, and comfort.

scholarly journals RANCANGBANGUN RANGKAIAN INVERTER SPWM UNIPOLAR 1 FASA DENGAN PENGATURAN FREKUENSI OUTPUT

2021 ◽  
Vol 9 (1) ◽  
pp. 46-49
Author(s):  
Fathoni ◽  
Agus Pracoyo ◽  
Totok Winarno ◽  
Rizal Sabillah
Keyword(s):  
Output Voltage ◽  
Test Results ◽  
Motor Speed ◽  
Output Frequency ◽  
Ac Motor ◽  
Power Part ◽  
The Difference ◽  
The Right ◽  
Frequency Variations

Changing the dc sgnal to ac signal is done for te purpose of load regulations, such as the ac motor speed, heater and lamp. Inverter work is done by ac rectification first and then converted again to a 1 phase ac signal. The ac output signal is a sinosoidal PWM (SPWM) type of unipolar 220 volts from the input 24 volt dc voltage. Unipolar SPWM signal generation is done by a microcontroller with programming. The number of counts (resolutions) of the SPWM signal and the period are set from the amount in the register, can be set to 8 bits or other constants. The power part of the SPWM inverter is the N channel MOSFET bridge circuit H with IR2110 solid state driver. Step transformer as a load while step-up the inverter output voltage. Determination of the output frequency is set through a rotary encoder that can be adjusted up (increment) or down (decrement). There are 5 frequency variations, namely 30, 40, 50, 60 and 70 Hz. To get the inverter efficiency, the type of MOSFET used is chosen to have the type that has a low RDS (on) value and the right driving pulse, according to the switch configuration. Measurement of the output frequency is done by reading the image on the osciloscope. The observations show a frequency value that is almost the same as the constant. The test results show the difference in output voltage which is reduced at a 30 watt load.

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