bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigation of nonlinear propagation effects on sound from supersonic bullets
Authors: Salomons Erik , van der Eerden Frits , van den Berg Frank
Published: February 2023

ISO standard 17201-4 is a calculation method for sound levels generated by supersonic bullets. The standard takes into account nonlinear propagation effects, including broadening of a sound pulse with increasing propagation distance. Two elements of the ISO method are investigated in
this paper: i) the accuracy for various Mach numbers, and ii) the effect of noise barriers. For the first element, calculation results are compared with measurement results. In general the agreement is good, but large deviations occur at Mach numbers near unity. Calculation parameters were
varied in order to find an explanation for the deviations. For the second element, propagation paths along the horizontal top edge and the vertical side edges of a barrier of finite length are considered. For the path over the top edge, a possible approach is developed to account for the expected
reduction of nonlinear propagation effects in the shadow region behind a barrier. For the paths along the vertical side edges, a simulation model with a dense distribution of point sources is employed. The three propagation paths are explained in terms of pairwise cancellation of Fresnel zones.
The results of the simulation model are compared with results of an engineering model.
ATEFA - Project's results on UAM air traffic noise and air-taxi certification
Authors: Bauer Michael , Redmann Daniel
Published: February 2023

ATEFA, Germany's first nationally funded research project on UAM community noise, aimed to provide first answers, how novel air traffic noise from air-taxis can be assessed in a realistic scenario. Two eVTOL air-taxi systems - diverse in design and acoustics - and one regional sVTOL
were acoustically described and implemented in a traffic scenario which was covering the greater area around Munich in southern Germany, interlinking surrounding small towns, five larger cities of the region and the international airport. So far, in most studies generic noise emission data
were used to discuss quite complex, but also generic air traffic scenarios. ATEFA did follow a different path, based on realistic technical data and passenger number predictions. Besides this, simulated certification procedures were carried out for the two air-taxi systems. This activity was
performed for an understanding of the applicability of already existing rules and regulations regarding noise certification. The project will close by end of 2022, but significant results for air-taxi flyover simulations, large area noise mapping, and certification aspects are already part
of this paper.
The effect of corrugations on the crackle noise in under-expanded impinging jets
Authors: Sarangi Debivarati , R Karthik , K Srinivasan
Published: February 2023

The present study investigates crackle noise of the impinging jet over the flat and corrugated plate. The experiments are conducted using a 10 mm diameter (d) orifice for jet production. The standoff distance is varied from 1.5d to 6d, incrementing 0.5d. The nozzle pressure ratio (NPR)
is varied from 4 to 5.6 with a step size of 0.2. Results are discussed by plotting the probability density function of normalized pressure data and measured skewness values. For the flat plate, the positive skewed pressure data associated with strong compression and expansion is observed for
all NPRs, and the skewness value increases with an increase in NPR. The crackle noise is absent in the corrugated plate for most NPRs and standoff distances, although it is observed within a short duration at some NPRs. In contrast, the crackle noise is persistent for the flat plate throughout
the time range and is observed at a skewness value of 0.1391, which is less than that of the free jet.
Assessing the environmental burden of disease due to road traffic noise in Hesse, Germany
Authors: Lochmann Matthias , Hegewald Janice , Schubert Melanie , Seidler Andreas
Published: February 2023

As guidance for informed decision-making, we estimated the environmental burden of disease attributable to road-traffic noise in Hesse. Using detailed road-traffic-noise exposure data provided by HLNUG, we calculated the DALYs due to road-traffic noise > 40 dB(A) L24h (unweighted
average 24 h noise level) and other noise metrics for endpoints with known dose-response functions and evidence in the literature (NORAH-study on disease risks and WHO reviews). For Hesse, we found a total of 26,501 DALYs attributable to road-traffic noise or 435 DALY per 100,000 persons for
the reference year, 2015. The end points "Annoyance" and "Sleep disturbance" contribute more than 70 % of the burden. Further, we estimated that a hypothetic uniform road-traffic-noise reduction of 3 dB would prevent 23% of this burden of disease. We suggest an alternative
approach to extract an annoyance function from raw data used in the WHO-review. Our findings imply that the burden attributable to street-traffic-noise is of the same order of magnitude as, for example, the more fully researched environmental risk factor particulate matter. HLNUG is evaluating
expanding the BoD-approach including uncertainty assessment to other environmental risk factors and its use for informing decision makers.
Deriving parameters for characterisation of the track quality in relation to environmental vibration
Authors: Zandberg Hielke , van Uitert Agnes , Koopman Arnold
Published: February 2023

Irregularities in track geometry; like insulated joints, switches and crossings, etc. and track stiffness variations in transitions zones near bridges or culverts play a role in the dynamic forces in the wheel-rail interface of train and track. These are important sources for ground-borne
vibrations. In the Netherlands the track is monitored to facilitate maintenance management using a track recording coach (TRC). Data of these TRC measuring campaigns are stored and available for stakeholders working in field of rail maintenance or railway engineering. A database was build
using historical data of the TRC measurements back to 2013 together with meta data of track components such as insulated joints, switches, crossings, culverts, etc. The track geometry data (height and shift) have been post processed towards two newly designed spectral parameters, both of them
were expected to correlate with ground borne vibration at a distance from the track. One characterises discontinuities, the other continuous track. The paper will show how these parameters can be used to compare track quality and quality of track components with regard to vibrations. The study
analyses differences in track quality near transition zones in relation to vibration levels.
Suppression of quasiperiodic thermoacoustic oscillations via genetic programming
Authors: Yin Bo , Guan Yu , Redonnet Stephane , Gupta Vikrant , Li Larry K.B.
Published: February 2023

We use genetic programming (GP) to discover data-driven control laws for the suppression of quasiperiodic oscillations in a prototypical thermoacoustic system. We rank the control laws based on a predefined cost function that accounts for the pressure amplitude and the actuation effort.
We then breed subsequent generations of control laws via a tournament process. We find that GP closed-loop control is more effective than GP open-loop control and conventional periodic forcing, producing a similarly high degree of amplitude suppression but with the lowest actuation effort.
We also find that GP closed-loop control can identify unforeseen actuation mechanisms, providing new insight into the physical coupling between the heat release rate and pressure fields.
A prediction model of speech transmission index based on reverberation time in non-native linguistic context
Authors: Yang Da , Meng Qi , Liu Fangfang , Wu Yue
Published: February 2023

High speech intelligibility is an essential requirement for classrooms, especially in relation to non-native students. Speech transmission index (STI) was proved as the most relevant acoustic parameter to assess speech intelligibility. In this paper, twenty-seven classrooms for non-native
teaching purposes were selected for investigation. Physical acoustic measurements were conducted in these classrooms and numerical simulation verification was determined by ODEON version 16. The relationships between STI values and RT values were fitted based on non-linear curve fitting regression
models. In this paper, three primary forms of non-linear curve fitting regression models were employed for predicting curves. A logarithmic function was selected as the basic regression equation to describe the effects of RT values on STI values. The results showed that STI values increase
with the decrease of RT values for all age groups. From the verified results, it was possible to propose the predictive equation that presents the best accuracy in predicting the experimental data for non-native teaching purposes. The impact of different age groups and linguistic environment
on STI were discussed. The prediction model is expected to estimate STI values by using RT values during the early design stage in a non-native linguistic context.
Development of a Reference Energy Mean Emission Level Traffic Noise Models for Bituminous Pavement for Mid-Sized Cities in India.
Authors: Upadhyay Saurabh , Parida Manoranjan , Kumar Brind
Published: February 2023

Present study is towards the development of the Reference Energy Mean Emission Level (REMEL) of vehicle types involved in the mixed traffic flow on the bituminous pavements on Indian roads for a mid-sized city. Five locations were identified in Kanpur urban area under free flow traffic
and good pavement conditions. A total 10700 data sets for 11 vehicle categories were collected from these locations under a sponsored research project being sponsored by Ministry of Education (MoE) and Ministry of Housing & Urban Affairs (MoUD), Govt. of India, under the flagship programme
of IMPRINT India. The REMEL of every vehicle category was measured using Type-1 Sound Level Meter (SLM) and was placed at a distance of 7.5 meters from the centre of the nearby carriageway while measuring the single vehicle passby event for each category. Noise level and spot speed data for
bituminous pavement surface were collected for 11 vehicles categories as bus, truck, tractor-trailer, light commercial vehicle (LCV), 3-wheeler (auto, vikram), motorcycle, e-rickshaw, bicycle, tricycle and horse driven vehicle. Regression analysis was performed to obtain the REMEL equations
for prediction of Leq.The study provides an interesting insight to noise emission characteristics of vehicle types for mixed traffic under Indian conditions.
Influence of soundscape on visiting time in zoos
Authors: Zou Nengsong , wang hongwei
Published: February 2023

The soundscape is very important for the environmental quality and animal welfare of zoos. This paper explores the relationship between the soundscape and visiting time, for the case of Guangzhou Zoo in China. In this research, we measured the sound indicators in the zoo along with
the visiting time of visitors. This included the cases of with or without animal soundscape around the exhibition area, recorded by video equipment. It was found that there was a positive correlation between visiting time and the consistency of animal sound scene vision. The visiting time
of tourists will increase significantly When there is animal sound scene in the exhibition area.The visiting time of tourists is significantly increased when the animal sound is consistent with the animals seen by tourists.Within a certain range, the visiting time is not affected by the sound
pressure level.The results of this research are expected to guide the soundscape design, construction and management of zoos.
Environmental noise annoyance trends In selected locations In Bratislava
Authors: Argalasova Lubica , Filova Alexandra , Hirosova Katarina , Samohyl Martin , Babjakova Jana , Matejakova Lenka , Jurkovicova Jana
Published: February 2023

The rapid development in traffic density and the economic transformation since 1989 has brought new problems concerning road traffic noise in Slovakia. The aim is to follow the time trends of noise annoyance in monitored localities in Bratislava at time intervals of 10, 20, and 30 years.
We used the validated methodology for subjective assessment of noise annoyance in young and healthy individuals, as well as a method of objectification by direct measurement of sound levels. Respondents (n=3,465) were university students, living in the exposed and control dormitories representing
a homogenous sample. The sharp increase in traffic noise burden in the exposed area was found at the first 10-year interval (LAeq=67.5 dB). A slight decrease occurred after 2014, and in 2019 up to LAeq=63.9 dB. A sharp increase in road traffic noise annoyance was observed in the first 10-year
interval (ORMH=2.56 (95 % CI=1.93-3.42) vs 6.01 (95% CI=4.97-7.95) with a slightly decreasing trend in 2019. An increase in noise annoyance from entertainment facilities was observed as well. Despite a slightly declining trend, road traffic noise annoyance is still an important issue and there
is a need for preventive measures to reduce such exposure in residential areas.
Prediction of vibration transmission across finite double wall junctions using a hybrid diffuse-deterministic approach.
Authors: Stalmans Wannes , Van hoorickx Cédric , Reynders Edwin
Published: February 2023

Predicting the sound insulation between two rooms is a complex problem since not only the direct path through the separating element but also the flanking transmission paths can largely influence the sound insulation of the system. An important parameter for calculating flanking transmission
is the vibration reduction index, which relates to the transmission coefficient between the connected plates. The international building acoustics standard ISO 12354-1/2 provides prediction formulas for the vibration reduction index of single wall junctions, but not for double wall junctions.
A new hybrid-deterministic approach is proposed to calculate flanking transmission across double wall junctions. The walls and floors are modelled as diffuse subsystems while the connection between the double wall is modelled deterministically. This approach relies on the diffuse field reciprocity
relationship, which relates the vibration transmission to the direct field dynamic stiffness of the subsystems (walls and floors), i.e., the dynamic stiffness of the equivalent infinite subsystem as observed at the junction. In contrast to existing approaches, the finite size of the junction
is properly taken into account in this way. The new approach is applied to different types of double wall junctions to determine simplified regression formulas for practical sound insulation design.
Masking effect of HVAC noise on walking sounds on concrete floors
Authors: Lietzén Jesse , Kylliäinen Mikko , Kovalainen Ville
Published: February 2023

Background noise masks living sounds in apartment buildings. Depending on the sound insulation properties of the structures of the apartments, background noise affects the audibility of the perceived airborne and impact sounds from neighboring dwellings. This preliminary study focused
on the masking effect of the background noise generated by HVAC systems on the impact sounds generated by walking on concrete floors. The study was carried out by determining the signal-to-noise ratios of walk induced sound levels on the concrete floors and measured background noise levels.
The walking sounds were generated by walking with socks and shoes on nine concrete floors, and the sound pressure levels were measured in a receiving room below the floors. The background noise levels, where these walking sounds were compared, consisted of the results collected in 210 measurements
carried out in Finnish apartment buildings. The results of the study show how it is likely that the background noise masks sound from walking with socks and shoes differently. To investigate the phenomenon more in detail, follow-up research has been proposed.
Environmental Noise Monitoring and Assessment of Petrochemical Plants
Authors: Tunnah Scott , Tunnah Scott
Published: February 2023

This paper will look at the Scottish regulatory guidance for the monitoring and assessment of environmental noise from petrochemical plants. The practical challenges of on-site measurement and long-term monitoring will be discussed. The use of BS 4142 and NANR 45 within this context
and the appropriate data analysis to assess noise impact on residential locations.
Identification and Reduction of Interactional Noise of a Quadcopter in Hover and Forward Flight Conditions
Authors: Zawodny Nikolas , Pettingill Nicole , Thurman Christopher
Published: February 2023

Advanced Air Mobility is a vision for a safe, accessible, and sustainable aviation system to transport people and packages between places not served by traditional aviation. With this emerging transportation industry, there is motivation to characterize the noise of vehicles to determine
their potential impacts on the community. An experimental testing campaign was conducted on a small unmanned aerial vehicle in the NASA Langley Low Speed Aeroacoustic Wind Tunnel as a continuation of a previous testing campaign. The goals of the current test are to identify sources of interactional
noise as well as to test custom designed rotors and noise reduction devices. The tested noise reduction methods involve increasing the vertical distances between the rotors and the vehicle airframe as well as between the forward and aft rotor disk planes. These methods are intended to reduce
rotor-airframe interaction noise in hover and fore-aft rotor wake ingestion noise in forward flight. A phased microphone array is also utilized to identify the locations of prominent noise generation for the different vehicle configurations in forward flight. Elevation of the rotors from the
vehicle airframe yielded up to an 8 dBA noise reduction in forward flight, while yielding only modest noise reductions in hover.
Active Sound Power Attenuation with a Ring of Harmonic Acoustic Pneumatic Sources fOr Destructive Interference (RHAPSODI) and near field in-duct microphones
Authors: Micheau Philippe , Drant Julien , Berry Alain
Published: February 2023

Much research has been conducted to investigate active noise control of turbofans with loudspeakers as noise cancellation sources. However, the required power consumption, fragility, and weight and volume penalty make them unsuitable for engine nacelle applications. An alternative source
technology, developed at Sherbrooke, is a harmonic acoustic pneumatic source (HAPS). They are mounted on a ring to perform multimodal active noise control in duct by destructive interference of primary noise (RHAPSODI). A dedicated MIMO harmonic control strategy based on complex envelopes
is required to control the RHAPSODI with in-duct microphones located at a very close distance from it or with external in-duct microphones located 1 meter away from the duct mouth. During a training phase, active radiated power minimization is performed with the external microphones for different
modal components of the primary harmonic noise. The optimal HAPS control and the optimal signals from the in-duct microphones are then used to tune the specific MIMO controller with a field compensation matrix close to the in-duct microphone signals. A typical result shows that RHAPSODI using
5 in-duct microphones and 5 HAPS can provide high attenuation of radiated sound power (22 dB-SPL, 1 kHz, primary sound power 130 dB).
Fan Noise Reduction by Acoustic Liners Combined with Fine-Perforated-Film: Noise Tests by a Small Turbofan Engine DGEN 380
Authors: Murata Yo , Ishii Tatsuya , Enomoto Shunji , Oinuma Hideshi , Nagai Kenichiro , Nagai Junichi , Daiguji Hirofumi
Published: February 2023

Resonant-type liner panels are one the primary countermeasures for the fan noise of aircraft engines, though the sound absorption performances of the liners are known to be tolerated by the grazing flow streaming on their surface. Therefore, suppressing the effect of the flow on the
liners is greatly important for higher sound absorption efficiency. In this study, liner panels with special surface structures were manufactured and applied to an outdoor test using a small turbofan engine, DGEN 380. A special thin film, Fine-Perforated-Film (FPF), was applied to two liner
samples. In the first sample, FPF was applied directly to the surface of a typical liner. In the second sample, a gap was fixed between the FPF and liner surface. In addition, a rigid wall and a typical liner were used for comparison, to investigate the effect of the structures. During the
test, the samples were installed to the exhaust bypass duct of the DGEN engine. The acoustic pressure inside the duct and in far field was measured. Analysis and comparison of the results showed that the new structures suppressed the effect of the grazing flow and caused a larger amount of
noise reduction, compared to the typical liner sample.
Noise and Deprivation in Scotland's Four Largest Cities: Glasgow, Edinburgh, Aberdeen and Dundee
Authors: Leiper Ashley , Hood Andrew
Published: February 2023

Scotland's draft National Planning Framework 4 (NPF4) Integrated Impact Assessment states that deprived communities tend to be exposed to higher levels of noise than those in less deprived areas. However, this has not yet been specifically investigated in Scotland. The majority of studies
find a higher likelihood of noise exposure in deprived communities, although some find the opposite to be true, suggesting that the relationship is highly dependent on the context of the study area. To address a need in the literature for more research in this area and to comment on the statement
in NPF4, a spatial analysis has been conducted using Scottish Government published datasets, the Scottish Index of Multiple Deprivation and the Round 3 Noise Mapping. A statistically significant positive relationship between noise exposure and multiple deprivation is found in Glasgow. No statistically
significant relationship between noise exposure and multiple deprivation is found for Aberdeen, Dundee or Edinburgh. The relationships between deprivation and both Noise Management Areas and proximity to Quiet Areas are explored.
EFEKTIFITAS WAKTU TUNGGU DAN LOKASI TERHADAP KEPUASAN PELANGGAN
Authors: Mawardi Amna
Published: February 2023

This research was conducted to find out what factors can influence consumers satisfaction. In this study used two independent variables Waiting Time (X1), and Location (X2), while Customer Satisfaction (Y) as the dependent variable. After reviewing the literature and formulating hypotheses, data collection was carried out by distributing questionnaires to 97 consumers at Gemah Ripah Purwakarta Restaurant who had carried out the purchase using non probility sampling techniques. For analysis and elaboration of data using SPSS version 21. Then there are several tests performed in analyzing data, such as measuring instruments, classical assumption tests, multiple linear regression analysis and hypothesis testing. Based on the results of the analysis found that the two independent variables have a significant and positive effect on the dependent variable. Waiting time variable has a positive effect of 0.488 with a significance level of 0,000. Location variables have a positive effect of 0.566 with a significance level of 0.000. Adjusted R Square of the three variables is 0.662 or 66.2% which means that the two variables are able to explain the variation in the dependent variable of 66.2 percent with 33.8 percent explained by other variables not used in this study.
Sistem Pakar Rekomendasi Menu Makanan Sehat Penderita Penyakit dengan Metode Forward Chaining
Authors: Sufi Husin , Utomo Danang Wahyu , Darmawati Gusnita
Published: February 2023

Makanan adalah sumber penting kehidupan bagi manusia untuk keberlangsungan hidup. Banyak sekali makanan di dunia ini, namun pada dasarnya ada 2 sumber jenis makanan yang diolah pada kehidupan sehari-hari, yaitu hewani dan nabati. Makanan memiliki keterkaitan erat terhadap penyakit yang diderita manusia. Apabila makanan yang dikonsumsi tidak tepat maka akan menimbulkan penyakit bawaan sebelumnya dan menjadi penyakit yang lebih serius atau kambuh. Penyakit kolestrol adalah penyakit yang paling serius dan banyak menyerang kesehatan manusia. Penyakit ini disebabkan oleh konsumsi makanan yang tidak sehat secara terus menerus sehingga kandungan lemak menumpuk didalam tubuh.  Kadar kolsetrol yang menumpuk akan mengakibatkan tingginya kadar kolsetrol serta dapat memicu penyakit yang berkelanjutan seperti penyakit jantung coroner. Tujuan penelitian ini adalah membangun sistem pakar rekomendasi menu makanan sehat penderita penyakit kolesterol. Sistem pakar yang dibangun menggunakan metode forward chaining dalam proses pendiagnosaan yang didasari pengetahuan pakar. Hasil penelitian ini menyajikan sebuah sistem pakar yang mampu mendiagnosa dalam rekomendasi menu makanan bagi penderita penyakit kolesterol secara tepat dan akurat. Hasil tersebut tersaji dalam sebuah sistem yang dibangun menggunakan pemograman berbasis android. Sistem pakar ini ini dapat digunakan oleh pasien penderita kolestrol dimana saja kapan saja, pasien penderita kolestrol tidak perlu bentemu langsung dengan pakar gizi cukup mengakses aplikasi tersebut dari android masing-masing pasien. Secara keseluruhan hasil penelitian ini dapat memberikan kontribusi positif bagi para penderita kolestrol dalam menentukan menu makanan sehat yang bisa dikunsumsi.
Analisis Sentimen Relokasi Ibukota Nusantara Menggunakan Algoritma Naïve Bayes dan KNN
Authors: Syahril Dwi Prasetyo  , Shofa Shofiah Hilabi  , Fitri Nurapriani
Published: February 2023

Pemindahan serta pembangunan Ibu Kota Negara Nusantara pada masa Presiden Bapak Ir. H. Joko Widodo akan direlokasi secara bertahap dari tahun 2024 hingga 2045. Dengan hal ini tersebut maka menjadi  sebuah perbincangan dan mengundang banyak reaksi, terutama bagi masyarakat Indonesia. Persoalan dalam Pemindahann Ibu Kota Negara merupakan hal yang sensitif sehingga ramai diperbincangkan di media sosial termasuk Twitter. Pada dasarnya media sosial digunakan untuk menyampaikan pendapat atau sebuah ekspresi. Pemanfaatan media sosial ini tentunya menjadi layanan dan fasilitas yang dapat dimanfaatkan untuk sebuah isu politik atau hal-hal yang sedang dibahas. Maka dari itu penelitian ini bertujuan untuk melakukan analisis sentimen masyarakat Indonesia terhadap pemindahan Ibu Kota Nusantara. Dalam penelitian ini metode yang digunakan adalah Naïve Bayes (NB) dan K-Nearest Neighbor (KNN). Hasil penelitian menyajikan hasil komparasi kinerja metode tersebut bahwa metode Naïve Bayes memberikan tingkat akurasi analisis sentimen sebesar 82.27%, nilai Precision sebesar 86.36% dan nilai Recall sebesar 76.93%. Kinerja metode KNN juga menyajikan hasil analisis dengan tingkat akurasi sebesar 88,12%, Precision sebesar 93.%98 dan nilai recall sebesar 81.53%. Berdasarkan hasil analisis tersebut maka proses analisis menggunakan metode KKN mengungguli metode NB dalam mengukur sentimen terhadap pemindahan Ibu Kota Nusantara.
ANALISIS STRUKTUR BIAYA DAN PEMASARAN USAHATANI JAGUNG MANIS (Zea mays L. Saccharata )
Authors: Wahyuni MS Etty , Afriani Noor
Published: February 2023

AbstractSweet corn commodity has good prospects for development, but there are various problems in the sweet corn farming agribusiness system, namely the weak linkages between upstream to downstream subsystems such as distribution and supply of production factors, agricultural production processes, processing and marketing as well as risks to income. This study aims to analyze the cost structure, marketing channels and marketing efficiency of Sweet Corn (Zea mays L. Saccharata) in Tarakan City. Respondents obtained by purposive sampling method from sweet corn farmers in Tarakan City amounted to 112 people. Data analysis to answer existing problems includes analysis of cost structure, marketing channels, marketing margins, farmer's share and marketing efficiency. The results showed that variable costs gave the highest contribution to total production costs of 61.39% compared to fixed costs of 38.61%, with the highest percentage being labor costs. The marketing channel consists of 2 marketing channels, namely marketing channels that involve 1 marketing agency, namely market traders to consumers and marketing channels that involve 2 marketing institutions, namely collectors and market traders. Marketing channels 1 and 2 are in the efficient category based on the farmer's share value, namely 82% for channel 1 and 72% for channel 2.Key words: the cost structure, marketing, sweet corn AbstrakKomoditas jagung manis memiliki prospek yang baik untuk dikembangkan, namun terdapat berbagai permasalahan dalam sistem agribisnis usahatani jagung manis yaitu lemahnya keterkaitan antar subsistem hulu sampai ke hilir seperti distribusi dan penyediaan faktor produksi, proses produksi pertanian, pengolahan dan pemasaran serta risiko pada pendapatan. Penelitian ini bertujuan untuk menganalisis struktur biaya, saluran pemasaran dan efisiensi pemasaran Jagung Manis (Zea mays L. Saccharata) di Kota Tarakan. Responden diperoleh berdasarkan metode purposive sampling dari para petani jagung manis di Kota Tarakan berjumlah 112 orang. Analisis data untuk menjawab permasalahan yang ada meliputi analisis struktur biaya, saluran pemasaran, margin pemasaran, farmer’s sharedan efisensi pemasaran. Hasil penelitian menunjukkan biaya variabel memberi kontribusi tertinggi terhadap total biaya produksi sebesar 61,39% dibandingkan biaya tetap sebesar 38,61%, dengan persentase tertinggi adalah biaya tenaga kerja dan biaya pupuk. Adapun saluran pemasaran terdiri dari 2 saluran pemasaran yaitu saluran pemasaran yang melibatkan 1 lembaga pemasaran yaitu pedagang pasar ke konsumen dan saluran pemasaran yang melibatkan 2 lembaga pemasaran yaitu  pengepul dan pedagang pasar. Saluran pemasaran 1 dan 2 termasuk kategori efisien berdasarkan nilai farmer’s share yaitu 82% untuk saluran 1 dan 72% untuk saluran ke 2.Kata kunci: struktur biaya, pemasaran, jagung manis
Unexpected Bone Formation after Stand-Alone Anterior Cervical Discectomy and Fusion Using Polyetheretherketone Cage with i-Factor
Authors: Lee Seul-Kee , Han Moon-Soo , Moon Bong Ju , Lee Jung-Kil
Published: February 2023

Several recent studies have revealed that anterior cervical discectomy and fusion (ACDF) with i-factor, a bone substitute material, is safe and effective, with a superior fusion rate. Clinical studies with i-factor have thus far been shown favorable results, despite theoretical concerns; moreover, no adverse events related to i-factor after ACDF have been reported. Herein, we discuss two cases that presented unexpected bone formation after ACDF using polyetheretherketone (PEEK) cage with i-factor. A 60-year-old male patient underwent stand-alone ACDF surgery at the C4–5–6–7 level. The appropriate PEEK cage was selected, filled with an i-factor 2.5 mL divided into 1/3 that was intermixed with autologous bone chips, The patient developed mild dysphagia 1 month after surgery. A simple cervical spine radiograph showed unexpected bone formation in the anterior portion of the vertebral body at C6 and C7 levels. A 67-year-old male patient underwent stand-alone ACDF surgery at the C3–4 level. The appropriate PEEK cage was selected, filled with 1 mL of i-factor 1 mL that was intermixed with autologous bone chips. The patient developed mild dysphagia 3 months after surgery. Computed tomography (CT) scan revealed the presence of a bridging bone at the graft level, but showed unexpected bone formation in the anterior portion of the vertebral body. The unexpected bone formation causing dysphagia that we observed may be due to the high potent bone-inductive capacity of i-factor, but instead because there are no guidelines on proper dosage and usage. Further biomechanical studies are required to determine the optimal dose and usage instruction of i-factor.
Proposal of a process and tool for the management of quotations for a fiber optic assembly manufacturer
Authors: Tobin-Littlewood Jose Guillermo , Sánchez-Schmit Guzman Gerardo Alfonso , Perez-Soltero Alonso
Published: February 2023

The current process followed by a fiber optic assembly manufacturing company to quote its products fails to meet the expectations and requirements of both internal and external customers. There is poor document management, as well as problems regarding the flow of information used in the activities carried out in the Quoting department. This creates confusion and results in late deliveries for quotes. In addition to this, there is a lack of correct process measurement, so it is not possible to make a complete analysis. A new Quotation process is proposed as well as a management tool based on the PPAP practice contained within the APQP methodology. The objective is to increase the performance of the department's activities, improve the structure and organization of the knowledge generated during the Quotation process and obtain a platform for the collection of metrics for future process analysis. This will allow the company to meet customer expectations and perform analysis that allow continuous improvement of the process.
Preferensi Masyarakat Terhadap Pemanfaatan Taman Kota Sebagai Ruang Terbuka Hijau di Kota Manado
Authors: Kalalo Joane , Rondonuwu Dwight Mooddy , Syafriny Reny
Published: February 2023

Taman Kota merupakan bagian dari ruang terbuka hijau publik. Saat ini ketersediaan taman di Kota Manado telah memenuhi proporsi penyediaan taman kota sebagaimana standar yang berlaku. Namun kenyataannya pemanfataan taman kota masih sepi dari pengunjung dan sepertinya belum memenuhi harapan masyarakat. Tujuan penelitian adalah menganalisis preferensi masyarakat terhadap pemanfaatan taman kota sebagai ruang terbuka hijau publik di Kota Manado. Penelitian menggunakan metode analisis kualitatif deskriptif. Hasil penelitian berdasarkan preferensi masyarakat terhadap pemanfaatan taman kota menunjukkan bahwa taman kota yang paling diminati adalah Manado Godbless Park. Alasannya karena ketersediaan fasilitasnya dan keberagaman aktivitas yang ada lebih representatif jika dibandingkan dengan lapangan Sparta Tikala dan lapangan Sario serta taman kota lainnya di Kota Manado. Preferensi masyarakat terhadap pendukung kualitas fasilitas taman kota, seperti kenyamanan, kebersihan, keindahan, keamanan dan kemudahan akses merupakan hal penting yang perlu mendapat perhatian dari semua pihak.
In Vitro Evaluation of the Antagonism of Saprophyte and Endophytic Fungi Isolated from Groundnut (Arachis hypogaea) Against Soil-Transmitted Diseases Sclerotium rolfsii
Authors: Pelealu Johanis , Queljoe Edwin de , Wahyudi Lalu , Umboh Stella Deiby , Tallei Trina
Published: February 2023

Certain soil-borne diseases can have a detrimental effect on the quality and quantity of peanut production. One of the soil-borne diseases is Sclerotium rolfsii, a fungus that is the primary limiting factor in peanut plants. An alternative to controlling this fungus is to use saprophytic and endophytic fungi. The purpose of this study was to evaluate several saprophytic and endophytic fungi isolated from peanut plants in vitro as antagonistic agents against S. rolfsii. Isolation of saprophytic and endophytic fungi was carried out using the stratified dilution method. The fungal antagonism test was carried out using a non-factorial completely randomized design with 3 replications. The parameters observed in this study included the inhibiting zone, the diameter of the isolate colonies, the growth area, and the interaction of saprophytic and endophytic fungi with S. rolfsii. Five families and eight species of soil fungi were identified using macroscopic and microscopic identification techniques. The type of soil fungus has a large impact on the growth rate and inhibition area. Mucor hiemalis grew at the fastest rate, while Rhizopus oryzae had the largest inhibition zone.
Potensi Jenis Pohon pada Ruang Terbuka Hijau Kota Pontianak dalam Ameliorasi Iklim Mikro
Authors: Azahra Siva Devi , Destiana  , Kartikawati Siti Masitoh , Pramulya Muhammad
Published: February 2023

Suhu udara di kawasan perkotaan mengalami peningkatan yang dapat mempengaruhi kenyamanan dan produktivitas masyarakat. Ruang terbuka hijau (RTH) terdiri dari berbagai jenis pohon yang memiliki peran ekologis untuk menanggulangi hal tersebut. Penelitian ini bertujuan untuk mengevaluasi kesesuaian karakteristik pohon pada RTH dalam ameliorasi iklim mikro sehingga diketahui sejauh mana efektivitas dalam memenuhi fungsi ekologisnya serta memberikan rekomendasi jenis-jenis tumbuhan yang mendukung pengelolaan dan konservasi RTH. Penelitian dilakukan dengan melakukan penilaian kesesuaian karakteristik pohon dengan fungsi ekologisnya berdasarkan KPI (Key Performance Index) pada beberapa ruang terbuka hijau di Kota Pontianak. Hasil penelitian menunjukkan bahwa angsana (Pterocarpus indicus), tanjung (Mimusops elengi), trembesi (Samanea saman), dan mahoni (Swietenia mahagoni) merupakan jenis pohon yang efektif dalam memodifikasi suhu dan kelembapan udara serta sebagai pemecah angin.
ANALISIS PERENCANAAN DAN PENGEMBANGAN KARIER BINTARA POLRI SATUAN BRIGADE MOBIL DAERAH JAWA BARAT (STUDI KASUS PADA BATALYON A PELOPOR)
Authors: Suarha Cecep , Saputra Ginanjar Wira , Johan Ahmad
Published: February 2023

The purpose of this study was to determine career planning and career development. The research method used in this study is a descriptive research method with a qualitative approach. The data collection techniques used in this study are observation, interviews, research instruments and documentation. The research results show that planning analysis and career development in the form of promotions and accelerated ranks of Battalion A Pioneer personnel in general have been carried out well in accordance with the established plans or regulations, especially regarding the criteria for personnel violations both in disciplinary hearings, codes of ethics and criminal acts. weaknesses in supervision from the level of leadership to subordinates. The conclusion of this study is that the policies of the leadership regarding career planning and development in the form of promotions and accelerated ranks for Battalion A Pioneer personnel have had the expected impact, especially to improve the discipline and performance of Battalion A Pioneer personnel with regard to attendance levels, main tasks and functions as well as personnel work behavior.
Design de embalagem da queijadinha: bem do patrimônio imaterial de São Cristóvão/SE
Authors: Dos Santos Illy Aline Lima de Castro , Melo Isabella de Sousa , Dickie Isadora Burmeister , Bonfim Luís Américo Silva
Published: February 2023

Este artigo apresenta um relato de experiência em curricularização da extensão no curso de Design Gráfico da Universidade Federal de Sergipe, por meio da aplicação da metodologia de aprendizagem ativa, aprendizagem por projeto, que resultou no desenvolvimento de embalagem para a Casa da Queijada, estabelecimento que produz e comercializa a queijadinha, bem do patrimônio imaterial de São Cristóvão/SE, que atrai turistas e contribui com o desenvolvimento econômico do município. Como atividade do projeto de extensão Ações Interdisciplinares em Design, Desenvolvimento Humano e Tecnologia Social no estado de Sergipe, o envolvimento de estudantes da disciplina Projeto de Embalagem viabilizou a articulação entre o ensino, a pesquisa e a extensão, proporcionando a produção e a aplicação de conhecimentos em desenvolvimento de embalagem, envolvendo estudantes e produtores locais da queijadinha. Desta forma, para além do aprendizado relacionado à atividade profissional, os(as) estudantes foram sensibilizados com relação à importância de olhar para seu entorno e encontrar soluções que visem o aproveitamento e o aprimoramento de tecnologias sociais; e os produtores locais da queijadinha puderam compreender um pouco mais sobre a atividade de Design. A troca de conhecimentos, nesse sentido, caracterizou a interação dialógica da comunidade acadêmica com a sociedade, bem como a indissociabilidade entre ensino, pesquisa e extensão, tal como preconizado pela curricularização da extensão.
Classification in the Self Monitoring System for Chronic Kidney Failure Patients on Hemodialysis Therapy with SVM
Authors: Andriyanto Teguh , Daniati Erna
Published: February 2023

Patients with chronic kidney failure (CKF) need intensive care or therapy. Chronic kidney failure is a condition when kidney function decreases gradually due to damage to kidney tissue. Patients with these conditions need to undergo hemodialysis therapy which can be done every week. The results of this therapy need to be monitored to determine the quality and action after therapy. Monitoring of therapeutic results was initially carried out with medical records where the files were kept by the health agency. In addition, patients need to consult a doctor or nurse to read this medical record. This becomes an obstacle for patients to know the progress of their therapy results. Therefore it is necessary to have a monitoring system as a management information system for patients with chronic kidney failure. Conventional monitoring systems need to include visualization methods or quality fees from doctors. Therefore it is necessary to include the classification method as knowledge of the system to study patterns or rules from doctors in handling the quality of therapeutic results. This classification method uses the Support Vector Machine (SVM) with the Linear kernel as the classification method. In this study, the accuracy obtained with SVM was 90% with a short data training processing time.
Applied of Statistics to Building Entrepreneurship Intention Through Self Efficacy, Adversity Quotient, and Need for Achievement In Students of The Faculty of Economics and Business, Labuhanbatu University
Authors: Yusuf Andri , Syahputra Rizki , Lubis Junita
Published: February 2023

The purpose of this study is to find out the true picture of self-efficiency, adversity quotient and need for achievement in building entrepreneurial intentions in students. Collecting data in this study through research with a type of quantitative research in the form of distributing questionnaires. This research uses descriptive analysis, classical assumption test, multiple linear regression test and partial test. Respondents in this study were 65 students of the Faculty of Economics and Business, Labuhanbatu University. The results of this study state that self-efficacy, adversity quotient and need for achievement have a positive and significant effect on building entrepreneurial intentions in students of the Faculty of Economics and Business, Labuhanbatu University. The coefficient of determination obtained is 0.678, it indicates that self-efficacy, adversity quotient and need for achievement owned by students of the Faculty of Economics and Business, Labuhanbatu University, have presented a contribution of 67.8% in building entrepreneurial intentions. The remaining 32.2% was used as a contribution from outside this study which was not examined by researchers.
Kontribusi Madrasah Dalam Penerapan Konsep Akhlak Modern Di Era Disrupsi
Authors: Madjid Yuan Nisa , Qomariyah Lailatul , Khalidi Ahmad , Deviana Ade Destri
Published: February 2023

Lulusan madrasah dianggap belum mampu bersaing dalam kancah dunia khususnya pada bidang non Islamic studies seperti sains, kesehatan, dan teknik informatika, sebab penerapan pendidikan akhlak hanya berfokus pada akhlak secara tekstual tanpa diiringi akhlak untuk mengembangkan potensi diri dan keberlangsungan hidup. Akhlak modern (inovatif, produktif dan kreatif) menjadi konsep penting untuk solusi tersebut dan diterapkan dalam pendidikan madrasah melalui kegiatan pembelajaran dan life skill. Tujuan penelitian adalah untuk mengetahui konstribusi madrasah MTsN 4 Hulu Sungai Utara dalam penerapan akhlak modern. Penelitian ini menggunakan pendekatan kualitatif dengan library research. Hasil penelitian adalah konstribusi madrasah MTsN 4 Hulu Sungai Utara untuk menanamkan akhlak modern dilakukan melalui: 1) kegiatan ekstrakurikuler yang berpusat pada pengembangan life skill dan kewirausahaan, crafting, Teknologi Informatika (pengembangan software maupun aplikasi), inovasi barang dengan kreatifitas budaya lokal, pengolahan sampah, sains dan robotik, serta optimalisasi organisasi di madrasah;  2) metode pembejaran berbasis pemecahan masalah maupun menciptakan solusi berupa peluang dan usaha; 3) seminar dan pelatihan life skill yang bersifat modern dengan pembicara yang mampu mendobrak pasar nasional maupun internasional.
Analisis Penggunaan Model Pembelajaran Kolaboratif Tipe Buzz Group Dalam Peningkatan Keaktifan Siswa SD
Authors: Maulidiya Maulidiya , Martati Badruli , Putra Deni Adi
Published: February 2023

Penelitian ini bertujuan untuk mendeskripsikan penggunaan metode pembelajaran kolaboratif tipe buzz group dalam hal peningkatan keaktifan siswa SD salah satunya pada mata pelajaran PPKn yang cenderung kurang disukai oleh siswa SD, kajian pada artikel ini berfokuskan pada keaktifan  siswa SD terhadap pelajaran PPKn menggunakan model pembelajaran kolaboratif tipe buzz group. Penelitian menggunakan metode diskriptif kualitatif. subjek yang digunakan dalam penelitian ini adalah siswa kelas 3 SD Muhammadiyah Surabaya. sumber data terdiri dari hasil wawancara dengan guru menggunakan lembar wawancara guru, dan dokumentasi. Analisis data dalam penelitian adalah pengumpulan data, reduksi data, penyajian data, dan kesimpulan. Dalam proses pembelajaran siswa cenderung kurang tertarik dan bosan dengan proses pembelajaran karena meode yang digunakan hanya ceramah dan monoton. Hasil penelitian ini adalah untuk mendeskripsikan keaktifan siswa sd terhadap pelajaran PPKn menggunakan model pembelajaran kolaboratif tipe buzz group. Sehingga peneliti melakukan penelitian ini agar siswa lebih aktif dalam proses pembelajaran. Keaktifan siswa sangat berperan penting dalam proses pembelajaran dan hasil belajar.
Medienpolitik
Authors: Puppis Manuel
Published: February 2023

Mit Übungen und Lösungen
Digitalisierung, Transnationalisierung und Kommerzialisierung stellen die Medienpolitik vor große Herausforderungen. Wie kann sichergestellt werden, dass Medien und Plattformen ihre wichtige Funktion in einer demokratischen Gesellschaft erfüllen?
In diese Thematik führt Manuel Puppis systematisch und umfassend ein. Er vermittelt die Grundlagen für eine kritische Auseinandersetzung mit Medienpolitik, Medienregulierung und Media Governance. Problemorientiert und international vergleichend diskutiert er die verschiedenen Themenbereiche der Medienpolitik in Europa – von Medienkonzentration über den öffentlichen Rundfunk, Medienförderung, Plattformen und Algorithmen bis hin zu Medienkompetenz und Datenschutz.
Rechnungswesen nach HGB: 99 Aufgaben, die Bachelorstudierende beherrschen müssen
Authors: Elsner Andree B.
Published: February 2023

Im Mittelpunkt dieses Buches stehen Themen des externen Rechnungswesens, insbesondere der handelsrechtlichen Bilanzierung im Jahresabschluss. Auf häufig gemacht Fehler in Klausuren weist Andree Elsner explizit hin, ebenso auf die aufzuwende Zeit und den Schwierigkeitsgrad pro Aufgabe. Auch wie sich Studierende auf die anstehende Prüfung richtig vorbereiten wird angesprochen.
Menschenrechtspolitik
Authors: Krennerich Michael
Published: February 2023

Diese Einführung zeigt auf leicht verständliche und anschauliche Weise, wie mithilfe der Politikwissenschaft und benachbarter Disziplinen die komplexe Realität der Menschenrechtspolitik systematisch beschrieben und erklärt werden kann. Neben vielen Beispielen aus der ganzen Welt legt das Buch einen besonderen Schwerpunkt auf die Menschenrechtspolitik in und durch Deutschland.