bluuebunny/crossref_metadata_2025 huggingface dataset:
A signature-based approach to quantify soil moisture dynamics under contrasting land-uses
Authors: Araki Ryoko , Branger Flora , Wiekenkamp Inge , McMillan Hilary
Published: June 2021

Soil moisture signatures provide a promising solution to overcome the
difficulty of evaluating soil moisture dynamics in hydrologic models.
Soil moisture signatures are metrics that represent catchment dynamics
extracted from time series of data and enable process-based model
evaluations. To date, soil moisture signatures have been tested only
under limited land-use types. In this study, we explore soil moisture
signatures’ ability to discriminate different dynamics among contrasting
land-uses. We applied a set of nine soil moisture signatures to datasets
from six in-situ soil moisture networks worldwide. The dataset covers a
range of land-use types, including forested and deforested areas,
shallow groundwater areas, wetlands, housing areas, grazed areas, and
cropland areas. These signatures characterize soil moisture dynamics at
three temporal scales: event, seasonal, and time-series scales.
Statistical and visual assessment of extracted signatures showed that
(1) storm event-based signatures can distinguish different dynamics for
most land-uses, (2) season-based signatures are useful to distinguish
different dynamics for some types of land-uses (forested vs. deforested
area, greenspace vs. housing area, and deep vs. shallow groundwater
area), (3) timeseries-based signatures can distinguish different
dynamics for some types of land-uses (forested vs. deforested area, deep
vs. shallow groundwater area, non-wetland vs. wetland area, and ungrazed
vs. grazed area). We compared signature-based process interpretations
against literature knowledge: event-based and time series-based
signatures were generally matched well with previous process
understandings from literature, but season-based signatures did not.
This study demonstrates the best practices of extracting soil moisture
signatures under various land-use and climate environments and applying
signatures for model evaluations.
Fluvial Suspended Sediment Transfer and Lacustrine Sedimentation of Recent Flood Turbidites in Proglacial Eklutna Lake, Western Chugach Mountains, Alaska
Authors: Schiefer Erik , Geck Jason , Ostman Johnse , McKay Nicholas , Praet Nore , Loso Michael , Kaufman Darrell
Published: June 2021

Suspended sediment delivery and deposition in proglacial lakes is
generally sensitive to a wide range of hydrometeorologic and geomorphic
controls. High discharge conditions are of particular importance in many
glaciolacustrine records, with individual floods potentially recorded as
distinctive turbidites. We used an extensive network of surface sediment
cores and hydroclimatic monitoring data to analyze recent flood
turbidites and associated sediment transfer controls over instrumental
periods at Eklutna Lake, western Chugach Mountains, Alaska. Close to a
decade of fluvial data from primary catchment tributaries show a
dominating influence of discharge on sediment delivery, with various
interconnections with other related hydroclimatic controls. Multivariate
fluvial models highlight and help quantify some complexities in sediment
transfer, including intra-annual variations, meteorological controls,
and the influence of subcatchment glacierization. Sediments deposited in
Eklutna Lake during the last half century are discontinuously varved and
contain multiple distinctive turbidites. Over a 30-year period of
stratigraphic calibration, we correlate the four thickest flood
turbidites (1989, 1995, 2006, 2012) to specific regional storms. The
studied turbidites correlate with late-summer and early-autumn
rainstorms with a magnitude of relatively instantaneous sedimentation 3
to 15 times greater than annual background accumulation. Our network of
sediment core data captured the broad extent and sediment variability
among the study turbidites and background sediment yield. Within-lake
spatial modelling of deposition quantifies variable rates of downlake
thinning and sediment focusing effects, and highlights especially large
differences between the thickest flood turbidites and background
sedimentation. This we primarily relate to strongly contrasting
dispersion processes controlled by inflow current strength and
turbidity. Sediment delivery is of interest for this catchment because
of reservoir and water supply operations. Furthermore, although smaller
floods may not be consistently represented, the lake likely contains a
valuable proxy record of regional flooding proximal to major population
centers of south-central Alaska including Anchorage.
Value of clinical research: Usefulness tool development and systematic review of 350 randomised controlled trials in preterm birth
Authors: Hooft Janneke van t , Dijk Charlotte van , Axfors Cathrine , Haber Noah , Alfirevic Zarko , Oudijk Martijn , Mol Ben , Bossuyt Patrick , Ioannidis John P. A.
Published: June 2021

Objective: We developed a research usefulness tool collating published
criteria and examined if randomised controlled trials (RCTs) addressing
preterm birth were useful. Search Strategy: Cochrane library. Selection
Criteria: Published RCTs within 56 preterm birth Cochrane reviews. Data
Collection and Analysis: A usefulness tool was developed with eight
criteria combining 13 items identified through literature searches and
consensus. RCTs were evaluated for compliance with each item by multiple
assessors (reviewer agreement 95-98%). Proportions with 95% confidence
interval (CI) were calculated and compared for change over time using ≧
2010 as a cut-off, with relative risks (RR). Main Results: Among 350
selected RCTs, only 38 (11%, 95% CI 8-15%) met half of the usefulness
criteria. Compared to trials before 2010, recent trials used composite
or surrogate (less informative) outcomes more often (13% vs 25%, RR
1.87, 95% CI 1.19-2.93). Only 17 trials reflected real life
(pragmatism) in design (5%, 95% CI 3-8%), with no improvements over
time. No trials reported involvement of mothers to reflect patients’ top
priorities in question definition or outcomes selection. Recent trials
were more transparent with prospective registration (0.5% vs 28%, RR
58, 95% CI 8-420%), availability of protocol (0.5% vs 15%, RR 32,
95% CI 4-237%) and data sharing statements (2% vs 8%, RR 3, 95% CI
1-10%). Conclusion: Clinical trials in preterm birth lacked many
usefulness features, with one tenth of trials meeting half of the items
evaluated. Use of informative outcomes, patient centeredness, pragmatism
and transparency should be key targets for future research planning.
Reframing Explanation as an Interactive Medium: The EQUAS (Explainable QUestion Answering System) Project
Authors: Batra Dhruv , Ferguson William , Mooney Raymond , Parikh Devi , Torralba Antonio , Bau David , Diller David , Fasching Joshua , Fiotto-Kaufman Jaden , Goyal Yash , Miller Jeff , Moffitt Kerry , Oca Alex Montes De , Selvaraju Ramprasaath R. , Shrivastava Ayush , Wu Jialin
Published: June 2021

This letter provides a retrospective analysis of our team’s research
performed under the DARPA Explainable Artificial Intelligence (XAI)
project. We began by exploring salience maps, English sentences, and
lists of feature names for explaining the behavior of
deep-learning-based discriminative systems, especially visual question
answering systems. We demonstrated limited positive effects from
statically presenting explanations along with system answers – for
example when teaching people to identify bird species. Many XAI
performers were getting better results when users interacted with
explanations. This motivated us to evolve the notion of explanation as
an interactive medium – usually, between humans and AI systems but
sometimes within the software system. We realized that interacting via
explanations could enable people to task and adapt ML agents. We added
affordances for editing explanations and modified the ML system to act
in accordance with the edits to produce an interpretable interface to
the agent. Through this interface, editing an explanation can adapt a
system’s performance to new, modified purposes. This deep tasking,
wherein the agent knows its objective and the explanation for that
objective will be critical to enable higher levels of autonomy.
Synthesis of new derivatives of alepterolic acid via click chemistry
Authors: Jin Xin , Cao Jianguo , Zhao Qingjie , Wang Qi , Guo Hongmei , Aisa Haji , Huang Guozheng
Published: June 2021

Alepterolic acid is a natural diterpenoid isolated from Aleuritopteris argentea (S. G. Gm?l.) F?e, a fern with potential medicinal activity, used in China as a folk medicine to regulate menstruation and prevent cancer. Nevertheless, there are few reports about the structural modification of this natural product. With the wide application of 1,2,3-triazole derivatives in medicines, pesticides, functional materials, the synthesis of 1,2,3-triazoles derivatives has attracted the attention of synthetic chemists. In this article, 23 new derivatives of alepterolic acid combined with 1,2,3-triazole were designed and synthesized by esterification and click chemistry reaction in a fast, conventional and efficient way. All the products were obtained in good yields (72 to 97 %). The structure of these compounds was confirmed by 1H-, 13C-NMR and mass spectral data. The use of the easily available reactants and the common reaction conditions furnish an efficient method for the synthesis of alepterolic acid derivatives. The preparation of these compounds would enable further biological evaluation in the future
Trauma of the Larynx and Cervical Esophagus
Authors: Young David , Tkaczuk Andrew
Published: June 2021

Upper aerodigestive tract trauma is rare occurrence, but can have devastating consequences. Immediate complications including airway compromise can be life threatening and complicate resuscitative efforts. Long-term sequelae can significantly affect a patient’s quality of life by limiting one’s ability to breathe, phonate, and/or swallow. This review provides an overview of upper aerodigestive trauma, where many of these injuries occur concomitantly, but this text is divided into three main categories of: laryngeal framework, upper aerodigestive perforation, and adult caustic ingestion. The initial management of these injuries can be reflexive and mundane, but also are frequently nuanced and challenging, where personal experiences in management of these patients results in mastery. 
This review contains 9 figures, 4 tables and 82 references. 
Keywords: Laryngeal trauma, laryngeal facture, esophageal perforation, caustic ingestion
Fenofibrate Use Is Associated With Lower Mortality and Fewer Cardiovascular Events in Patients With Diabetes: Results of 10,114 Patients From the Korean National Health Insurance Service Cohort
Authors: Jo Sang-Ho , Nam Hyewon , Lee Jeongwoo , Park Sojeong , Lee Jungkuk , Kyoung Dae-Sung
Published: June 2021

Objective: We investigate long term clinical efficacy of
fenofibrate use on mortality and cardiovascular outcomes in patients with type 2
diabetes.

Research design
and Methods: We performed population based cohort study using data of
Korean National Health Insurance from 2003 to 2014. Among 63727 participants
with diabetes aged 40-79, 5057 users of fenofibrate only were compared with
5057 non-users of fenofibrate and/or omega-3
fatty acid with 1:1 propensity matching. Primary endpoint was composite
of myocardial infarction, stroke, percutaneous coronary revascularization and cardiac
death for median 3 years.

Results: Primary endpoint was significantly lower in fenofibrate
users as compared to neither
users, 13.4 vs. 15.5 per 1000 person years (hazard ratio [HR] 0.76, confidence
interval [CI], 0.62-0.94, P=0.010). Cardiac death (1.8 vs. 3.1 per 1000 person
years [HR 0.59, CI, 0.352- 0.987, p=0.0446]), all cause death (7.6 vs. 15.3 per
1000 person years [HR 0.437, CI, 0.340 -0.562, p<0.0001]), and stroke (6.5
vs. 8.6 per 1000 person years [HR 0.621, CI, 0.463-0.833, P=0.0015]) were
significantly lower in fenofibrate group. As the duration of fenofibrate use
stratified by quartiles (Q1-4), the risk decreased in Q4 with HR of 0.347 (95%
CI 0.226-0.532, P<0.0001). In subgroup analysis, the favoring effect of
fenofibrate is sustained consistently across all subset of patients including those
classified by LDL-C, HDL-C and TG levels.

Conclusions: Use of fenofibrate was associated with lower rate of total
and cardiac mortality and cardiovascular events in type 2 diabetes patients for
3 year follow-up in real world large populations.
SURFO Technical Report No. 11-01
Authors:   SURFO
Published: June 2021

The 2011 technical reports written by undergraduate students participating in the SURFO (Summer Undergraduate Research Fellowships in Oceanography) Program while at the University of Rhode Island.
SURFO Technical Report No. 13-03
Authors:   SURFO
Published: June 2021

The 2013 technical reports written by undergraduate students participating in the SURFO (Summer Undergraduate Research Fellowships in Oceanography) Program while at the University of Rhode Island.
Living Systematic Review on Cannabis and Other Plant-Based Treatments for Chronic Pain: May 2021 Update
Authors: McDonagh Marian S. , Wagner Jesse , Ahmed Azrah Y. , Morasco Benjamin , Kansagara Devan , Chou Roger
Published: June 2021

Overview This is the third quarterly progress report for an ongoing living systematic review on cannabis and other plant-based treatments for chronic pain. The first progress report was published in January 2021 and the second in March 2021. The draft systematic review was available for public comment from May 19 through June 15, 2021, on the Agency for Healthcare Research and Quality (AHRQ) Effective Health Care website. The systematic review synthesizes evidence on the benefits and harms of plant-based compounds (PBCs), such as cannabinoids and kratom, used to treat chronic pain, addressing concerns about severe adverse effects, abuse, misuse, dependence, and addiction. The purpose of this progress report is to describe the cumulative literature identified thus far. This report will be periodically updated with new studies as they are published and identified, culminating in an annual systematic review that provides a synthesis of the accumulated evidence. Main Points In patients with chronic (mainly neuropathic) pain with short-term treatment (4 weeks to <6 months): • Studies of cannabis-related products were grouped based on their tetrahydrocannabinol (THC) to cannabidiol (CBD) ratio using the following categories: high THC to CBD, comparable THC to CBD, and low THC to CBD. • Comparable THC to CBD ratio oral spray is probably associated with small improvements in pain severity and may be associated with small improvements in function. There was no effect in pain interference or serious adverse events. There may be a large increased risk of dizziness and sedation, and a moderate increased risk of nausea. • Synthetic THC (high THC to CBD) may be associated with moderate improvement in pain severity and increased risk of sedation, and large increased risk of nausea. Synthetic THC is probably associated with a large increased risk of dizziness. • Extracted whole-plant high THC to CBD ratio products may be associated with large increases in risk of withdrawal due to adverse events and dizziness. • Evidence on whole-plant cannabis, low THC to CBD ratio products (topical CBD), other cannabinoids (cannabidivarin), and comparisons with other active interventions was insufficient to draw conclusions. • Other key adverse event outcomes (psychosis, cannabis use disorder, cognitive deficits) and outcomes on the impact on opioid use were not reported. • No evidence on other plant-based compounds, such as kratom, met criteria for this review.
KONTRIBUSI MOTIVASI DAN PEMANFAATAN AKSES INTERNET SEKOLAH SEBAGAI SUMBER BELAJAR TERHADAP HASIL BELAJAR PADA MATA PELAJARAN KKPI SISWA KELAS XI MULTIMEDIA DI SMK NEGERI 2 PADANG PANJANG
Authors: Gustina Fitriani , Zulhendra Zulhendra , Jufri Ahmad
Published: June 2021

Problems in this research that majority of students are more likely to use the Internet not to seek the information related to the subject matter , but more likely to use the Internet to play games and so on . The purpose of this study was to reveal the contribution of Motivation and Use of Internet access as a Source of Learning School Of Learning Outcomes In subjects KKPI Multimedia Class XI student at SMK Padang Panjang 2 .This research is a descriptive correlational. The population in this study a class XI student of Multimedia and sample 61 students . Sampling technique using total sampling . The technique of collecting data using questionnaires class . Then the data were analyzed using statistical methods with SPSS Version 16 for correlation  and  regression  analysis  .  The  results  of  data  analysis showed : ( 1 ) Motivation accounted for 12.0 % of the student learning outcomes , ( 2 ) Internet Access Benefits School contributed 10.7 % of the  student  learning  outcomes  ,  (  3  )  Motivation  and  Benefits  of Internet access together accounted for 12.1 % of the learning outcomes.So it can be concluded that the Motivation and School Internet Access Benefits contribute to learning outcomes , the better motivation in the learning process , and the better the students' skills in the use of the internet , it will get better learning results. Keywords : Motivation , Benefits School Internet Access , Learning Outcomes
Perancanga Sistem Informasi Perpustakaan SMA Negeri 1 Danau Kembar
Authors: Afliyanti Meri , Zulhendra Zulhendra , Kurniadi Denny
Published: June 2021

Library management at SMA country 1 twin lake in this time not yet optimal and not based on computerization. aim from library information system sma country 1 twin lake based on web is a information system that designed to give and optimize operator performance. in give service to library member, in service search book, loaning service and library book return, accessinged according to online. this application planning uses language java with idea netbeans and place to keep database that is mysql. program implementation at require medium shaped computer that integration webserver. implementation result from information system library this is library operator can make recapitulation member report, book total report, fine report, loaning report and return. Keyword: Library Information System, Java, Mysql And Idea Netbeans.
Kontribusi Gaya Belajar Dan Kemampuan Kognitif Mahasiswa Teknik Elektronika Terhadap Hasil Belajar Mahasiswa Pada Mata Kuliah Teknik Digital di Jurusan Teknik Elektronika Fakultas Teknik Universitas Negeri Padang
Authors: Witri Ainil , Hamid Yusri Abdul , Budayawan Khairi
Published: June 2021

The background of this research has by problem  learning outcomes in digital technique subject was low then student in electronics technique majors of FT UNP, where 93,68% student which not yet reached value ≥ B. This research is purposed to reveal the contribution style learn and cognitive ability to learning outcomes in subject of digital technique in electronics technique majors of FT UNP. This research type is descriptive which have the character of correlation.The population of this research was totaled of95 people and sampel 49 people student study program education electronics technique of semester january-june 2013. Using technique of random sampling (Simple Random Sampling). Data learning outcomes student obtained in subject of digital technique in electronics technique majors of FT UNP. While data style learn and collected cognitive ability to enquette by using scale of likert which have been tested validity and reliability. data were analyzed use statistical methods constructively Microsoft Excel software 2007.The result of data analysis showed: (1). style learn to give contribution equal 18,38% to  student learning outcomes in Majors Technique Electronics of FT UNP (2). cognitive ability give contribution equal  22,56% to studentlearning outcomesin Majors Technique Electronics of FT UNP (3). style learn and cognitive ability by together give contribution equal 25,61% to student learning outcomesin Majors Technique Electronics . Become can be concluded that style learn and cognitiveability  have contribution to learning outcomes, progressively style goodness learn student in course of learning to teach andcognitive ability excelsior of student, hence result learn of excelsior.Keywords: Style Learn, cognitive ability, Learning Outcomes,                Descriptive Correlational, Simple Random Sampling.
KONTRIBUSI DISIPLIN BELAJAR DAN LINGKUNGAN SEKOLAH TERHADAP HASIL BELAJAR SISWA KELAS XE SMKN 5 PADANG PADA MATA PELAJARAN DASAR LISTRIK DAN ELEKTRONIKA TAHUN AJARAN 2012/2013
Authors: Usni Havizatil Usni , Jufri Ahmad , Sukaya H.
Published: June 2021

This research based on the problem of low report study to DLE subject from some student of class XE at SMKN 5 Padang, wich 41,67% student got result of study below Kriteria Ketuntasan Minimal (KKM). The standard of KKM to DLE subject is 75 with scale from 0-100. The purpose of this research is to show the contribution of student discipline of study and school environment toward study report of DLE subject from students of class XE at SMKN 5 Padang. This research is a correlational research which is descriptive. The population of this research is 96 student and sample consist of 49 students class XE at SMKN 5 Padang on 2012/2013. The technique of sampling was using simple random sampling. The data of student report taken from teacher of DLE subject at SMKN 5 Padang while data of student discipline of study and school environment collected through questionnaire by using likert scale. Analysis of data is using statistic method with the help of Microsoft Exell 2007 software. The result of data analysis shows: (1) student discipline of study give contribution as 26,89% to student report of SMKN 5 Padang on 2012/2013. (2) School environment give contribution as 24,32 to student report of SMKN 5 Padang on 2012/2013. (3) Discipline of study and school environment simultancously give contribution as 36,03% to student report of SMKN 5 Padang on 2012/2013. Keywords: Discipline of study, school environtment, study report, correlational descriptive, simple random sampling.
EFEKTIFITAS PEMAKAIAN DAYA PADA PROTOTIPE ESKALATOR DENGAN PLC DAN NON - PLC
Authors: Janaldi A.R. Fadli , Sukaya Sukaya , Almasri Almasri
Published: June 2021

The research begining from the real in the Department Store and Mall so many to see Escalator that is a tool can be bring object from under floor to upper floor or opposite. Escalator always on from begining the mall open  until with  the mall close everydays certainly need too big  power and money must be buying every month for that power used. Programmable Logic Controller ( PLC ) is a digital electronics system / special type control have  as a base microprocessor using the memory can be program  for saving the instruction – instruction  and order the tool  will be control. Seen the symptom  then  can be formula the problem in this research that is how to abate power used escalator in the mall city of Padang involve the use of tool controlling that is PLC pass through of analysis of escalator prototype. Type this research is a experiment  in the research  researcher try to observation and manipulation the research object with a control. Researcher do at act of planning program, escalator with PLC control  and measurement used power of this escalator  prototype  and comparable with escalator prototype  without  PLC control in this prototipe. The result seen that escalator prototype non – PLC needed the power in 3 hour ( 116,84 Ampere ) too high if compare with escalator prototype with PLC is (62,65 Ampere ). Like that with torque when no load 0,5 Nm  for prototype non – PLC but 0 Nm for prototype with PLC and speed 413 Rpm  for escalator prototype non – PLC  than 400 Rpm  for escalator prototype with PLC when the load 2,5 Kg.Keywords :Escalator, Programable Logic Controller (PLC), LimitSwitch
PENGARUH PENERAPAN MODEL PEMBELAJARAN ACTIVE LEARNING TIPE“DYNAMIC TRUE OR FALSE“ TERHADAP HASIL BELAJAR SISWA KELAS X DALAM MATA PELAJARAN MENERAPKAN DASAR-DASAR ELEKTRONIKA PROGRAM KEAHLIAN TEKNIK AUDIO VIDEO DI SMKN 1 BUKITTINGGI
Authors: Haryadi Eko , Huda Yasdinul , Hanesman Hanesman
Published: June 2021

This research is motivated by the problem of low learning outcomes in subjects apply the basics of electronics class X Audio Video Engineering Department (TAV) Vocational School (SMK) Bukittinggi School 1, an experimental study using two class is a class that acts as a control and experiment. This study aimed to see whether there is influence learning outcomes after implementing the learning model of Active Learning type Dynamic true or False. The problem in this study is the fact that the field is found in SMKN 1 Bukittinggi, there are many students of class X Audio Video Engineering who scored below the standart of learning outcome minimum completeness criteria in subjects applying the basic fundamentals of electronics set a school that is 75.The population of this research is class X TAV SMKN 1 Bukittinggi TA 2013/2014. The data collected from the test results of a study about the essay as many as 20 items. Data were analyzed using Microsoft Excel to test normality, test homogenity, and test hypothesis. Normality test all values obtained χ2count is smaller than the value χ2 table. Homogenitas test obtained χ2 count< χ2table , atau -1,03 < 14,067. Hypothesis test tcount> ttable yaitu (5,613 >1.697). From the test results of research obtained an average value of student which uses the learning model of Active Learning Type Dynamic true or False is 79,53 while the control group of student who use learning directly lower the 60,78. The results of the hypothesis by using Microsoft Excel in t count found that -1,03 <  t table 14,067, so the alternative hypothesis (H1) is accepted or rejected the null hypothesis (H0). This means that on average significantly experimental class learning outcomes greater than the average of the control class learning outcomes. So it can be concluded that the application of Dynamic True or False effect on learning outcomes.Keywords : Active Learning, Dynamic True or False
KONTRIBUSI PENGUASAAN MATA DIKLAT PRODUKTIF DAN MINAT SISWA TERHADAP KEBERHASILAN PRAKTEK KERJA INDUSTRI PROGRAM TEKNIK AUDIO DAN VIDEO (TAV) KELAS XI DI SMK NEGERI 5 PADANG
Authors: Ramadhan Musthafa , Sriwahyuni Titi , Sukaya Sukaya
Published: June 2021

This study aimed to determine the contribution of Currency Mastery Training Productive and Interests Students Against Success Industrial Work Practice Program Audio and Video Engineering (TAV) Class XI in SMK Negeri 5 Padang.  This study is correlational description. The technique of sample selection in this study using simple random sampling of 39 respondents in SMK Negeri 5 Padang. Technique of collecting data using questionnaires and documentation. The data were analyzed using statistical methods of multiple regression analysis. The results of data analysis showed: 1) mastery currency productive training and interests of students together contribute significantly to the success of industry work practices outcomes of 61.5%, 2) mastery currency productive training contribute significantly to the success of industry work practices class outcomes of 47.5% and 3) student interest contributes significantly to the success of industry work practices outcomes of 57%. Key Word : Mastery Training Productive Currency, Interest Student, Success Industrial Work Practices.
ANALISIS KUALITAS JARINGAN INTERNET BERBASIS HSDPA PADA JARINGAN XL DI WILAYAH PADANG UTARA
Authors: Saputra Kelmizona , Huda Yasdinul , Hadi Ahmaddul
Published: June 2021

The background of this research is the number of internet users today, and requires a high-speed internet service. This study aims to find out great: delay, packet loss, and throughput. This type of research in this study is descriptive by using statistical analysis. Measurement delay, packet loss, and throughput using Axence NetTools, the results were compared with standard TIPHON. The study was conducted at three different measurement tititk during morning, noon, and night for 5 days. The analysis showed: (1) large delay measurement TP1 = 144.44 ms; TP2 = 134.48 ms; TP3 = 139.99 ms. Based on the very good standard so TIPHON classified service is still feasible to use. (2) Large Packet loss measurement TP1 = 0.77%; TP2 = 0.86%; TP3 = 2.24%. Based on the very good classified TIPHON standard so it is still feasible to use. (3) large throughput measurements TP1 = 0.63%; TP2 = 0.59%; TP3 = 0.57%. Based on the standard TIPHON classified ugly. Keywords : Delay, Packet loss, Throughput, Axence Nettools
ANALISIS REDAMANTERHADAP PERFORMANCEDENSE WAVELENGTH DIVISION MULTIPLEXING (DWDM)PADA SISTEM KOMUNIKASI SERAT OPTIKDENGAN METODE LINK POWER BUDGET DI PT. TELKOM PADANG (STUDI KASUS LINK PADANG – LUBUK BASUNG)
Authors: Herdianta Farta Wendy , Hanesman Hanesman , Faiza Delsina
Published: June 2021

The research was conducted by analyzing the optical fiber attenuation of the DWDM performance in terms of power received on optical fiber communication systems link Padang-Lubuk cone in PT. Telkom Padang. Optical fiber has a very small damping. Therefore optical fibers become the primary choice in telecommunications networks. To improve the transmission quality is better then the use of DWDM technology, DWDM technology is a method to insert a number of channels were transmitted in a single optical fiber. Instruments in this study is the Power Meter and OTDR JDSU MTS-2000 type, the type of cable used G.655 Single Mode type. Link Power Budget method is used to determine the performance of DWDM caused by attenuation based on the value of the received power output receiver. On the link Padang - Lubuk cone highest attenuation occurs in core 1 of 29.742dB with 100.035 km cable lengths, and the core 10 of 31.8 dB with 119.998 km cablelengths. Based on the large fault or attenuation/km core 1 of 0.297 dB/km, the core 10 of 0.265 dB/km and the standard ITU-T was 0.35 dB/km. Value attenuation/km core 1 and core 10 is still in normal conditions and under standard ITU-T 0.35 dB/km. Based on optical fiber attenuation, the results of analysis of the link power budget is the value of Rx is smaller than the value of Rx sensitivity of -27 dBm, it can be said performance DWDM optical fiber communication systems in normal and can be used to operate because the power output can still be accepted by receiver in the device. Keywords:optical fiber cable, optical fiber attenuation, DWDM, link power budget.
KONTRIBUSI KREATIVITAS DAN FASILITAS LABOR TERHADAP HASIL BELAJAR TEKNIK PEMROGRAMAN SISWA KELAS X TEKNIK AUDIO VIDEO SMK NEGERI 1 BUKITTINGGI
Authors: Mardatillah Taufik , Sriwahyuni Titi , Irfan Dedy Irfan
Published: June 2021

This study aimed to determine the contribution of creativity and laboratory facilities Against learning outcomes Program Audio and Video (TAV) Class X in SMK Bukittinggi.  This study is correlational description. The technique of sample selection in this study using simple random sampling of 36 respondents in SMK Negeri 1 Bukittinggi. The data were analyzed using statistical methods of multiple regression analysis. The results of data analysis showed:1) creativity and laboratory facilities together contribute significantly to the learning outcomes of 25,70%, 2) creativity contribute significantly to the learning outcomes of 16,16% and 3) laboratory facilities contributes significantly to the success of learning outcomes of 13,83%. KeyWord :    creativity, laboratory facilities, learning outcomes.
HUBUNGAN CARA BELAJAR DAN KREATIVITAS TERHADAP HASIL BELAJAR SISWA MATA DIKLAT ELEKTRONIKA LANJUTAN KELAS X TEKNIK AUDIO VIDEO DI SMKN 1 KOTO XI TARUSAN
Authors: Firnando Nobel , Sukaya Sukaya , Thamrin Thamrin
Published: June 2021

The aim of this research is to reveal the influenceof learning method and creativity, individually or in groups, to learning outcomes. The population is 49 people and the sample is 34 students of class X TAV in SMK N 1 Koto XI Tarusan. This research is using Simple Random Sampling method. The data ofstudent’s learning outcomes obtained from teachers of Elektronika Lanjutan subject. The data of learning method and creativity the way collected through a questionnaire to students by using a Likert scale that has been tested for validity and reliability. The result showed that (1) learning methodis significantly affecting the learning outcomes of students at19.82%, (2) creativity issignificantly affecting the learning outcomes of students at 14,44%, (3) both learning method and creativity are significantly affecting student’s learning outcomes at 24.05%. The conclusion is learning method and creativity are affecting the student’s learning outcomes at SMK 1 Koto XI Tarusan. The better learning method and creativity, the higher student’s learning outcomes. Keywords: How Learning, Creativity, Learning Outcomes.
PENGARUH PENGGUNAAN MODUL PEMBELAJARAN TERHADAP HASIL BELAJAR MATA DIKLAT MERANCANG WEB DATABASE UNTUK CONTENT SERVER SISWA KELAS XII TKJ DI SMKN 8 PADANG
Authors: Yeni Hasmisel Tri , Rukun Kasman , Almasri Almasri
Published: June 2021

The problem in this research is the fact that is found in the field, namely in SMK Negeri 8 Padang, there are still many students who obtain a class XII TKJ learning outcomes under the criteria of minimum standards on training eye Designing web content server database for the specified school is 78. That is 64.36 % of students who are under KKM dan35,64% of students who are above the KKM. Many factors, among which are the internal factors and external factors, as well as learning media. This study aimed to see whether there is any difference between the results of learning with Learning Module Using the learning outcomes that do not use the Learning Module that direct learning. This research uses experimental approach, this study population were students of class XII TKJ SMK Negeri 8 Padang in academic year 2013/2014. The sampling technique is done randomly. Experimental class is a class that is treated by using the Learning Using Modules and which became the control group is the class that does not use the module but with direct teaching methods. Data collected from the tests of learning outcomes in the form of an objective matter as much as 25 items. Data were analyzed manually to test for normality, homogeneity, and hypothesis testing. From the test results can research on the value of the average student using Module is 78.55 while students who use direct instruction method lower at 75.4 Results of hypothesis by using the formula manually find that thitung7,875> table (1672), so the alternative hypothesis (Ha) is accepted or rejected the null hypothesis (Ho). This means that significantly average results of experimental class learning is greater than the average results of classroom learning control. Keywords: Module, Model Learning, Learning Direct, Control and Experiment
KONTRIBUSI MOTIVASI BELAJAR DAN KOMPETENSI KEPRIBADIAN GURU TEHADAP HASIL BELAJAR KETERAMPILAN KOMPUTER DAN PENGELOLAAN INFORMASI SISWA KELAS XI TEKNIK KOMPUTER JARINGAN SMK NEGERI TAMAN FAJAR PEUREULAK
Authors: Miaria Ridwan , Azhar Nelda , Slamet Legiman
Published: June 2021

This study aims to reveal the contribution of learning motivation and competence of the teacher's personality on learning outcomes computer skills and information management SMKN Taman Fajar Peueulak. The hypothesis is: (1) learning motivation and competence of the teacher's personality together contribute significantly to the learning outcomes, (2) learning motivation contribute significantly to the learning outcomes and (3) Competence of teachers‘s personality contribute significantly to the learning outcomes. This research is classified in the study associative correlation. The data study outcome variables is from KKPI teacher and learning motivation and competence of the teacher's personality collected through questionnaires distributed to students by using a Likert scale and  has been tested for validity and reliability. Data is considered to have met the assumptions and requirements analysis; normal distribution of data, linear pattern, the data is homogeneous and there is no multicollinearity problem. The population was all students of class XI Computer Network Engineering in the academic year 2014/2015 with sampling using Taro Yamane formula involving 41 samples from 68 populations of students of class XI Computer Network Engineering of TKJ I and II. The results of data analysis showed: (1) learning motivation contribute to the learning outcomes of 10.17%, (2) competence of teachers personality contribute to the learning outcomes of 17.05%, and (3) learning motivation and competence of the teacher's personality contribute together  to the learning outcomes of 36.00%. The findings of this study is learning motivation  and competence of the teacher's personality are factors that influence student learning outcomes. However, of course there are other factors that also affect student learning outcomes. Keywords : Learning motivation, competence of the teacher's personality and computer skills and                    information management
PENGARUH PENERAPAN MODEL PEMBELAJARAN INKUIRI TERHADAP HASIL BELAJAR TEKNIK ELEKTRONIKA DASAR SISWA KELAS X SMKN 5 PADANG
Authors: Aryanti Letty , Anwar Muhammad , Zulwisli Zulwisli
Published: June 2021

This research was focusing on the low of student’s learning outcome, specially on Basic Electronics subject at SMKN 5 Padang. The objective is to reveal the effect of applying inquiry learning model to the subject. By using true experimental with simple random sampling; one of probability sampling tecnique, the model wa enducted in experiment class. A control class where STAD type of cooperative learning model, was also implemented to compare the treatment. The primary data was measured by structured  test (Pre-test and Post-test) according to basic competences described of the subject. based on the t-test result, complying the pre-requisite test such as normalityexamination, this research found that t>t0 (1,742 > 1,701). However, the result has shown that inquiry learning model is providing better student’s learning outcome than STAD model. Therefore, the inquiry model is more effective than STAD model as research conclusion.              Keywords: learning outcomes, learning model, Inquiry, Student Team Achievemnt Division.
ANALISIS KEPUASAN SISWA TERHADAP QUALITY OF SERVICE JARINGAN WLAN SMKN 2 PADANG MENGGUNAKAN METODE FUZZY-SERVQUAL
Authors: Prayudha Agung Rorhi , Tasrif Elfi , Dwiyani Nurindah
Published: June 2021

Satisfaction is the level of one's feelings after comparing the performance (outcome) that he felt compared to his expectations. Servqual method combined with fuzzy logic with the aim that the measurement of perceptions and expectations of students can be measured more precisely with more objective data.The purpose of this research is to measure the level of student satisfaction on Quality of Service WLAN network SMKN 2 Padang using Fuzzy-Servqual method. The method used in determining the level of student satisfaction is Servqual method that contains five dimensions of reliability, responsiveness, tangibles, security and access. The results of the analysis show that the overall gap is negative, which means that students are not satisfied with WLAN SMKN 2 Padang service. The gap value of each dimension in the Accounting department is reliability = -0.580; responsiveness = -0.4461; tangible = -0.603; security = -0.146; access = -0.4463. While in the tourism business travel department (UPW) gap value for the dimensions of reliability = -1,620; responsiveness = -1,460; tangible = -1,897; security = -1,517; access = -1,260. For the overall gap Accounting majors = -0.451, while the tourism business travel (UPW) = -1.540. Keywords: Fuzzy-Servqual, gap, WLAN
Analisis Persepsi Kemanfaatan Sistem Informasi Portal Akademik STMIK-AMIK Jayanusa Padang berdasarkan Faktor Human,Oorganization, dan Technology
Authors: Assyukra Ana , Adri Muhammad , Zulhendra Zulhendra
Published: June 2021

This study aims to determine the perceptions of benefits about the information system that has been applied in STMIK-AMIK Jayanusa Padang . And to know the contribution of human, organization, and technology users as part factor of human , organization , and technology to the perceived usefullness Portal Information System on STMIK-AMIK Jayanusa Padang . This research was conducted by analyzing the influence of users of portal information system on the perception of expediency , in this case based on factors Human Organization Technology. The result of data analysis shows that human , organization , and technology variables together significantly influence 72% towards perceived usefullnes  information system of Academic portal STMIK-AMIK Jayanusa Padang . So it can be concluded that the factor of human , organization , and technology has contributed to the perception of the system's usefulness . If each variable has a higher correlation it will increase the perception of exposure to Information System Academic Portal STMIK-AMIK Jayanusa Padang. The better human, organization, technology owned by STMIK-AMIK Jayanusa Padang will be the higher the perception of expediency Academic Portal Information System at STMIK-AMIK Jayanusa Padang.  Keywords: Academic Information System Portal, Human, Organization, and Technology, STMIK-AMIK Jayanusa Padang
PENGARUH MODEL PEMBELAJARAN STUDENT FACILITATOR AND EXPLAINING TERHADAP HASIL BELAJAR SIMULASI DIGITAL
Authors: Delianti Putri Irma , Tasrif Elfi , Dewi Ika Parma
Published: June 2021

This research aimed to analyze the difference of learning outcomes by using Student Facilitator and Explaining model and direct learning model on Digital Simulation subject at class X TKJ SMKN 1 Tilatang Kamang. The problem in this study was the student learning result which were still under KKM on Digital Simulation subjects at SMKN 1 Tilatang Kamang. Type of this research was Quasi Experiment. The sample was taken through Probability Sampling technique. The research samples were class X TKJ A  and class X TKJ B. Class X TKJ A as sample for experiment class using Student Facilitator and Explaining  model and class X TKJ B as sample for control class using direct learning model. Data analyzed based on post-test experiment class and control class, then analyzed for normality test, homogeneity test and hypothesis test. From the experimental class, the research results obtained an average of 82.47, while the control class was averaged of 76.94. Result of hypothesis calculation at significant level α = 0,05 found tcount> ttable that is 1,78> 1,699, because tcount was bigger than ttable, so null hypothesis (H0) was rejected and alternative hypothesis (Ha) was accepted. It can be concluded at the real level that this study showed that Student Facilitator and Explainingmodel gave significant effect on students learning results of Digital Simulation at class X TKJ in SMKN 1 Tilatang Kamang. Therefore, the Student Facilitator and Explaining model is better than the direct learning model.Keywords: Student Facilitator and Explaining Model,Direct Learning Model, Learning outcomes, Experiment Class, Control Class.
PENGARUH PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE TWO STAY TWO STRAY TERHADAP HASIL BELAJAR DASAR LISTRIK DAN ELEKTRONIKA KELAS X TEKNIK ELEKTRONIKA SMK NEGERI 1 BUKITTINGGI
Authors: Arza Siti Maisyarah , Azhar Nelda , Dewi Ika Parma
Published: June 2021

This study aims to determine the influence of cooperative learning model two stay two stray learning outcomes in electrical and electronics elementary subjects of x class students majoring in electronics engineering at SMK Negeri 1 Bukittinggi. This type of research is an experimental with intact group comparison design.The research sample is class X TE 2A as experiment class using cooperative learning model Two Stay Two Stray and class X TE 2B as control class using Problem Based Learning model. Technique of collecting data from post-test every meeting in experiment class and control class, then analyzed for homogeneity test, normality test and hypothesis test. From the experimental class research results obtained an average value of 81,13 while the control class get an average value of 74,06. The result of hypothesis calculation at significant level α = 0,05 got tcount> ttable that is 2,996> 1,697, because big tcount of ttable, null hypothesis (H0) rejected and alternative hypothesis (Ha) accepted. Can be concluded means at the real level, this study shows that, there is influence of positive learning outcomes between the use of cooperative learning model type Two Stay Two Stray with the model of Problem Based Learning in Electrical and Electronics Elementary students X class students majoring in electronics  engineering at SMK Negeri 1 Bukittinggi. So the results of student learning Two Stay Two Stray  can increase the learning outcomes of students and made student more active on study.Keywords: Learning Outcomes , Two Stay Two Stray (TSTS), Poblem Based Learning (PBL).
RANCANG BANGUN MEDIA PEMBELAJARAN INTERAKTIF KOMPUTER DAN JARINGAN DASAR KELAS X SMK
Authors: Chani Ichwan , Dwiyani Nurindah
Published: June 2021

This research discusses discussesthe advantage of information technology as a learning aid that is by by designing interactive multimedia learning on basic computer and networking at class X  in vocational school. The research aims to design a valid and practical interactive CD learning media using Adobe Director 11.5 software and supported by other media applications. In designing the material the researcher uses the classic tutorial method. The instruments carried out by researchers to collect data were by filling out questionnaires on the validity of the media carried out by 2 media lecturers (experts) who included aspects of media content, presentation and format as well as practical assessment of media carried out by 2 subject teachers and 5 students. Based on the results of the assessment has been conducted on the validity of the media, the results obtained with an average value of 0.79 and the value of practicality of the media obtained an average yield of 84.38% and 83%. So that it can be concluded that the interactive CD learning media designed using the adobe director 11.5 application is feasible and practical to use in Computer lessons and Class X Basic Networks in vocational school Keywords: Instructional Media, Adobe Director 11.5, Basic Computer And Network.
PENGARUH PENGGUNAAN JOBSHEET TERHADAP HASIL BELAJAR PRAKTIKUM KERJA BENGKEL DAN GAMBAR TEKNIK
Authors: Oktavia Vivi , Hanesman Hanesman
Published: June 2021

This study aims to determine the effect of the use of jobsheets on student learning outcomes in the workshop workshops and technical drawing of class X Audio Video Engineering. This type of research is quasi-experimental (quasi experiment). The subjects of this study were students of class X TAV of SMK Negeri 1 Koto XI Tarusan who in the 2018/2019 school year consisted of 34 students. Data collection in this study using the results of posttest in the form of objective questions as many as 30 items that have been tested for validity, reliability, index of difficulty and power difference questions. Data that has been obtained is analyzed using two different test averages (t test). From the results of the study obtained the value of the experimental class average of 84.94 and the average value of the control class 75.26. With the analysis of t test, it is obtained tcount = 6.131 which is smaller than t table = 2.037 at the significance level of 0.05. Thus it can be concluded that the use of jobsheet has a significant influence on improving student learning outcomes in the workshop workshops and technical models of class X TAV at SMK Negeri 1 Koto XI TarusanKeywords: jobsheet, workshop work and engineering drawings, Improving Learning Outcomes.