bluuebunny/crossref_metadata_2025 huggingface dataset:
Numerical simulations of sonic boom propagation over urban areas
Authors: Dragna Didier , Emmanuelli Ariane , Ollivier Sébastien , Blanc-Benon Philippe
Published: February 2023

Acceptability of supersonic transportation by population requires an accurate prediction of ground noise levels generated by sonic boom. This study aims at predicting sonic boom propagation over urban areas. For this purpose, numerical simulations are performed; the full 2D Euler equations
are solved using high-order finite-difference time-domain techniques. First, the case of an isolated building is considered. From a geometrical analysis, two characteristic zones are highlighted: an illumated region in front of the building and a shadow zone at its rear. The sonic boom waveforms
at the ground are composed of several arrivals, related to reflection at the building facades and diffraction at the building corners. The evolution of the noise levels is then shown to follow closely the geometrical analysis, with an amplification in the illuminated region and a large reduction
in the shadow zone. Second, the case of two identical buildings is investigated. The acoustic field inside the street canyon is examined. In particular, the boom waveforms exhibit low-frequency oscillations, in addition to the geometrical arrivals. They are related to resonant modes of the
canyon. Finally, an urban geometry representative of European city centres is considered. The variability of the boom waveforms and the noise levels is shown.
Noise from ventilation systems in dwellings - Regulations and field test procedures in selected countries in Europe
Authors: Rasmussen Birgit , Carrascal García Teresa
Published: February 2023

In most countries in Europe, regulatory noise limits apply for service equipment in housing. During the last few decades, mechanical ventilation with heat recovery (MVHR) has become increasingly prevalent in new and retrofitted housing in Europe. The MVHR systems supply fresh air to
obtain good indoor air quality, with minimal heat losses. However, the systems may operate continuously 24 hours/day and transmit noise into and between rooms by many possible paths. In practice, many people get annoyed or disturbed by the noise, especially during nighttime or when having
quiet activities. Some countries have lower service equipment noise limits for continuous sources than for non-continuous sources, and lower limits also apply for the upper quality classes in acoustic classification schemes. Thus, both design and measurements become challenging. The aim of
this paper is to investigate the noise limit values and descriptors applied to ventilation systems in housing in selected countries in Europe and compare limit values, field test and rating procedures as well as operating conditions and enforcement related to the limit values. Indications
of typical design methods will also be included.
Determining CNOSSOS-EU Meteorological correction factors in Ireland
Authors: Shilton Simon , Nunn Joshua
Published: February 2023

Ahead of the Round 4 strategic noise mapping under the END, TII commissioned a research project to determine the meteorological correction factors required for CNOSSOS-EU road and railway traffic noise calculationsacross Ireland. Methodologies for determining the percentage favourable
propagation were identified under NMPB2008 and NORD2000, and the input data requirements of the methods assessed. Meteo data available from Met Eireann and TII weather stations was collected and collated and compared with the requirements of the two methodologies. The data available in from
Irish met stations led to the selection of the methodologyfrom NORD2000 being selected. Thirty years of hourly data was analysed for 26 counties to provide long term weather data for temperature, relative humidity, mean sea level pressure, and percentage of favourable propagation suitable
for calculations under CNOSSOS-EU.This paper will present an overview of the methodology, available data and results obtained.
Recent Technological Advances in Spatial Active Noise Control Systems
Authors: Javahersaz Roohollah , Mohamady Samira , Montazeri Allahyar
Published: February 2023

This article provides a broad overview of the recent advances in the field of active noise control techniques to reduce unwanted noise over a certain spatial region of interest. By both commercial and technological advances in local active noise control systems extending the size of
the quiet zone seems to be a crucial step to develop the next generation of active control systems for a more personalized and quieter audio products. In this review article, the advances over the past decade in design and development of spatial active noise control techniques to enlarge the
controlled sound zone is reviewed. The focus is specifically on the adaptive control techniques and the methods proposed in the frequency domain to control the sound field. The study has paid a specific attention into the most important performance measures in designing a spatial active noise
control system such as convergence rate, stability and robustness of the algorithm, and the size of quite zone and how it can be enlarged by configuring the loudspeaker and microphone array geometries. Finally, the authors will discuss the current and future challenges that should be overcome
to improve the effectiveness of the recently proposed methods to expand the silence zone.
The influence of helmets on sound localisation in motorcyclists
Authors: Kennedy John , Byrne Seán
Published: February 2023

Motorcyclists are among the most vulnerable road users globally, they enjoy less protection than car drivers and experience higher speed collisions than cyclists, with less mobility and spatial awareness to avoid crashes. Sound localisation (SL) while wearing military and ski helmets
has been a significant area of research to improve spatial awareness, but no research has been completed thus far on the impact of motorcycle helmets on SL. This project aims to examine experimentally the impact of a motorcycle helmet on the Head Related Impulse Response (HRIR), and therefore
determine the extent of the impact on SL ability of a user. A database of HRIRs as a function of position in the horizontal place was established with and without a motorcycle helmet. The variation in the signals was evaluated, and it was found that the helmet results in significant loss of
higher frequencies, important for resolving front-back confusions. It is also demonstrated that the overall sound attenuation would result in reduced SL ability of the rider. A novel system to compensate for the changes in the HRIR was developed and experimentally tested to mitigate the impact
on SL ability for the wearer.
Prediction of Far-Field Sound Radiation Using Blocked Pressures and Reciprocally Measured Vibro-acoustic Frequency Response Functions
Authors: Barton Lucy
Published: February 2023

In industry, the use of blocked forces for the characterisation of structure borne sound sources is now common practice, whereas the sound power is typically used for airborne sound sources. In principle, it should also be possible to use blocked forces (or blocked pressures) to predict
airborne sound radiation using a similar approach and measurement methodology as the in-situ blocked force method. This is achieved by discretising the surface of the source into small unit cells, and measuring the vibration velocity whilst operational. In order to convert these velocities
to blocked forces, the mobility of the source for each of the positions must also be known: and to predict the radiated sound, a measured vibro-acoustic frequency response function is also required. Typically vibro-acoustic FRFs are measured by exciting the structure with an instrumented hammer
or shaker, but they may also be measured reciprocally using a volume velocity source. Described in the paper is an experiment conducted in a fully anechoic chamber to investigate the feasibility of the above approach, i.e. using blocked pressure and reciprocally measured vibro-acoustic FRFs
to characterise and predict airborne sound. The method is validated by comparing the directly measured radiated sound pressure to that which is predicted according to the above.
Artificial intelligence-based collaborative acoustic scene and event classification to support urban soundscape analysis and classification
Authors: Hou Yuanbo , Botteldooren Dick
Published: February 2023

A human listener embedded in a sonic environment will rely on meaning given to sound events as well as on general acoustic features to analyse and appraise its soundscape. However, currently used measurable indicators for soundscape mainly focus on the latter and meaning is only included
indirectly. Yet, today's artificial intelligence (AI) techniques allow to recognise a variety of sounds and thus assign meaning to them. Hence, we propose to combine a model for acoustic event classification trained on the large-scale environmental sound database AudioSet, with a scene classification
algorithm that couples direct identification of acoustic features with these recognised sound for scene recognition. The combined model is trained on TUT2018, a database containing ten everyday scenes. Applying the resulting AI-model to the soundscapes of the world database without further
training shows that the classification that is obtained correlates to perceived calmness and liveliness evaluated by a test panel. It also allows to unravel why an acoustic environment sounds like a lively square or a calm park by analysing the type of sounds and their occurrence pattern over
time. Moreover, disturbance of the acoustic environment that is expected based on visual clues, by e.g. traffic can easily be recognised.
Assessing the influence of street canyon shape on aircraft noise: results from measurements in courtyards near Amsterdam Schiphol Airport.
Authors: Lugten Martijn
Published: February 2023

Aircraft noise prediction models traditionally omit buildings to optimize speed. Buildings and vertical surfaces scatter and reflect incident sound, affecting sound levels around buildings and within streets. Previous studies showed the impact of buildings on aircraft noise, based on
a small number of measurements. Based on additional numerical models, it was found that the shape of buildings, i.e. a slanted or overhanging roof, lead to lower sound levels compared to streets comprised of vertical and flat surfaces. To examine these findings, a full-scale field lab was
built near Amsterdam Schiphol Airport, comprised of shipping containers. The experiment consists of three courtyards, in which ten microphones measure sound levels from aircraft flyovers, near facades facing towards and away from the sound source (airplanes). Measurements are matched with
meteorological and radar data, which gives information about the position of aircraft and the local weather conditions. The measurements show substantial differences depending on the position, ranging between 11dB(A) for a courtyard with straight facades, up to 14dB(A) for facades in a courtyard
with a slanted roof and a roof overhang. Results can be used to rethink the way areas near airports are designed.
Sheet Pile Tuned Mass Damper for Construction Noise Control
Authors: Ho Wilson , Wong Wylog , Chu Eric
Published: February 2023

Sheet piles are often used for underground retaining structures. For dense geology, vibratory driven method is more cost-effective than press-in driven method, but noisier. Conventional mitigations such as noise barrier or enclosure are not applicable due to the large size of pile wall
(generally >12m high and >10m width). Acoustic camera images revealed that noise radiation was dominant at 630Hz to 2000Hz and mainly came from the sheet-pile wall rather than the vibratory exciter. Vibration response measurement showed the sheet piles had two major resonance modes at
1000 and 2000Hz. An innovative noise mitigation method was developed with 14 nos. of tuned mass dampers (TMD) distributed along a 5m long aluminum tube for vibration energy dissipation at the pile wall. Specific magnetic mounts were developed for quick and easy attachment of the TMDs at the
construction site. In the site test, total 6 aluminum tubes (i.e., 84 TMDs) were mounted to the 1st, 2nd and 3rd piles adjacent to the driven pile on both sides. Vibration reduction was measured ~9 to 14dB at the pile wall. Noise reduction was measured 7 to 9dB(A) at 2 noise monitoring locations
(~7m and ~22m from the pile wall).
Developement of low-cost noise monitoring terminals (Nmt) based On MEMS microphones
Authors: Kuczynski Jacek
Published: February 2023

The article shows and discusses examples of Noise Monitoring Terminals (NMT) with MEMS microphones meeting class 1 and class 2 in accordance with the IEC 61672-1. The rapid development of MEMS microphones (Micro Electro-Mechanical Systems) in last decade years made it possible to use
them in noise measurement instrumentation meeting the IEC 61672-1 specifications. Fifteen years ago, the available MEMS microphones offered only the 60 dB dynamic range, whereas modern MEMS microphones offer 100 dB dynamics! Such a wide dynamic range of MEMS microphones, along with their improved
repeatability and a long-term stability, enabled the development of the low-cost noise monitoring terminals for noise monitoring. In particular one of such NMTs (SVANTEK SV 307) offers the measurement range of 25dBA Leq÷128 dBA Peak which proves to be optimal for urban noise monitoring
applications. Even more hardware development possibilities are offered by implementation of fully digital MEMS microphones that are offered for the cost below 5 Euro. Such a low microphone cost enables the development of innovating designs for low-cost noise monitoring terminals with features
such as a multi-microphones arrangement for a dynamic system check.
PENGAMBILAN TITANIUM DIOKSIDA (TiO2) DARI PASIR BESI KULONPROGO MENGGUNAKAN METODE HIDROMETALURGI (VARIASI KONSENTRASI DAN SUHU)
Authors: Grasella Florency Giovanni Saefeto  , Sri Rahayu Gusmarwani
Published: February 2023

Pasir besi merupakan bahan alam yang ketersediannya sangat melimpah di Indonesia. pasir besi berada pada urutan ke empat terbanyak unsur yang membentuk bumi.  Menurut hasil penelitian Indreswari Suroso Kandungan titanium pada pasir besi sebesar 12.87%. Hidrometalurgi merupakan Ilmu yang mempelajari cara memperoleh logam dari sumbernya pada bumi. Proses pelindian (leaching) adalah proses pemekatan kimiawi untuk melepaskan pengotor bijih dari suatu mineral dengan cara pelarutan dalam reagen tertentu.

Pada tahapan penelitian hal pertama yang harus dilakukan yaitu preparasi pasir besi dengan mengunakan magnet, kemudian proses dekomposisi dimana hasil separasi pasir besi dihomogenisasikan dengan NaoH kemudian difurnace pada suhu 550oC. selanjutnya dilakukan proses pemisahan larutan dengan padatan yang dimana padatan tersebut akan dikeringkan menggunakan oven pada suhu 110oC. dan tahapan terakhir yaitu pelindian.

Pada hasil preparasi dan proses dekomposisi didapatkan hasil hasil yaitu besi merupakan unsur utama pada pasir besi karena memiliki kandungan terbesar yaitu Fe (44.07%) dan yang memiliki kandungan terkecil yaitu Mn (0.726%). Kandungan titanium pada pasir besi yang telah diseparasi sebesar 4.618%.

Hasil pada jurnal yang telah direview menunjukan bahwa untuk mendapatkan hasil ekstrak titanium dan untuk mengetahui kandungan dalam titanium dapat menggunakan beberapa metode antara lain hidrometalurgi (leaching), peleburan, pemanasan gelombang mikro, dekomposisi dan pelindian, Hidrolisis, elektrolisis, kausik, dan sonokimia.

Dari metode tersebut didapatkan hasil kandungan titanium yang terdapat pada pasir besi dan bahan baku lainnya yaitu pada hidrometalurgi (leaching) didapatkan 12.2 % dan 6.51%, peleburan 5.71%, pemanasan gelombang mikro 5.89%, dekomposisi dan pelindian 5.33 %, Hidrolisis 45.35%, elektrolisis 4.22%, kausik 19.94 %, dan sonokimia.8.27 %
PEMANFAATAN KULIT JAGUNG DAN TONGKOL JAGUNG (Zea Mays) SEBAGAI BAHAN DASAR PEMBUATAN KERTAS SENI DENGAN PENAMBAHAN NATRIUM HIDROKSIDA (NaOH) (Variabel Konsentrasi NaOH dengan Waktu Pemasakan)
Authors: Rahmat Fikri  , Murni Yuniwati
Published: February 2023

Limbah kulit dan tonkol jagung banyak dijumpai setelah paska panen dan hanya dibuang oleh masyarakat, akan menyebabkan pencemaran lingkungan jika tidak ditangani. Limbah kulit dan tongkol jagung merupakan tanaman yang dapat digunakan sebagai bahan dasar pembuatan kertas seni, yang memiliki kandungan selulosa tinggi.

Kertas seni dalam penelitian ini dibuat dari kulit jagung dan tongkol jagung. Penelitian ini dilakukan Laboratorium Proses Kimia Institut Sains & Teknologi Akprind Yogyakarta. Penelitian dilakukan dengan menggunakan variable konsentrasi NaOH dan waktu pemasakan.

Proses pembuatan kertas seni diawali dengan pencucian, pemotongan, serta pengeringan kulit dan tongkol jagung. Pencucian berfungsi membersihkan kotoran yang menempel pada kulit dan tongkol jagung. Pemotongan berfungsi mempermudah proses pemasakan. Pengeringan berfungsi agar kandungan air dalam kulit dan tongkol jagung semakin rendah. Pemasakan dilakukan dengan menggunkan larutan NaOH konsentrasi yang ditentukan. Setelah itu dicuci, menggunakan aquadest sampai pH netral. Penggilingan pulp (blender) dengan penambahan lem PVAc dan garam (NaCl), kemudian dilakukan pencetakan dan pengeringan kertas dibawah sinar matahari. Setelah kertas kering kemudian dianalisis untuk mengetahui kuat sobek, kuat tarik dari kertas seni berbahan dasar kulit dan tongkol jagung dengan penambahan NaOH.

Berdasarkan penelitian diperoleh kondisi proses yang terbaik dengan menggunakan konsentrasi NaOH 4% dan waktu pemasakan 80 menit. Dengan kondisi proses tersebut diperoleh kadar alfa selulosa 83,33%, kuat sobek 6,36 mN, dan kuat tarik 5,73 MPa.
PENGARUH SELF-CONCEPT DAN LIFESTYLE TERHADAP MINAT BERKUNJUNG PADA DESTINASI WISATA DI KABUPATEN PURWAKARTA
Authors: Maulana Indra , Kamila Anisya Rachma
Published: February 2023

This study was conducted to determine the effect on interest in visiting Purwakarta tourism. In this study, self-concept and lifestyle variables were used as independent variables. Primary data collection using a sample of 100 people. The data analysis method used in this study is multiple linear regression with the help of SPSS 25 software. Based on the results of research that has been done, it shows that partially self-concept and lifestyle have a positive and significant effect on visiting interest. And all independent variables have a simultaneous effect on interest in visiting with a calculated F value of 20,927 with a significance level of 0.000. and the value of R square shows the result of 0.300, which means that all independent variables have a simultaneous effect of 30.0%.
Faktor-faktor yang Mempengaruhi Minat Mahasiswa Dalam Memilih Program Studi Akuntansi di Universitas Hein Namoeto
Authors: Ul Sahrul Posi Sahrul
Published: February 2023

The purpose of this study was to determine the factors that influence students' interest in choosing an accounting study program. The data used in this study were obtained from the results of distributing questionnaires which were distributed to active students in the accounting study program at Hein Namotemo University. The results of this study indicate that the career expectation factor has a positive and significant effect on student interest in choosing an accounting study program, this is evidenced by looking at the value of tcount> ttable (2.549> 1.987) with a significance of 0.015, while for the perception factor and personal characteristics it has no significant effect on students' interest in choosing an accounting study program, this is evidenced by the results of the analysis that for the perceived factor the value of tcount> ttable (1.612<1.987) with a significance of 0.115, for personal characteristics factors with a value of tcount1.987) with a significance of 0.727. for the test results of the coefficient of determination (R Square) of 0.261 or equal to 26.1%, while the rest is influenced by other variables outside of this study.
Las agendas pública, política y mediática en clave de desarrollo
Authors: Castillo Salina Yánder
Published: February 2023

La importancia de la presente investigación radica en brindar elementos teóricos y empíricos para articular las agendas sociales y el desarrollo sociocultural comunitario desde una perspectiva crítica y transformadora, asentada en los medios de comunicación locales como principal esfera de la dialógica social. El análisis se sitúa en el contexto cubano, donde se ha comprobado el desajuste significativo entre las agendas pública, política y mediática, lo que no contribuye a un establecimiento horizontal y participativo de los problemas sociales en el tejido público, a la construcción participativa de las políticas locales y a la concertación de la acción colectiva. Se propone un modelo socio-antropológico para la interrelación dialógica de estas agendas que contribuya a fortalecer el desarrollo sociocultural de las localidades cubanas. El modelo se construyó a partir del método dialéctico, en varias fases de profundización: 1. sistematización y crítica de las investigaciones sobre estas agendas en Cuba; 2. estudio empírico de un contexto local tipo; 3. construcción del modelo base vinculando los resultados empíricos y el saber de actores locales y; 4. validación por criterio de actores locales, de expertos e implementación práctica. Los resultados evidencian la consistencia teórica y empírica de la propuesta.
Um olhar para a pesquisa em Jornalismo na Iniciação Científica:
Authors: Alves da Silva Marcelli , Santos da Rocha Ariel , Alves Ceretta Kellen Ayana , De Sousa Nayara Nascimento
Published: February 2023

O artigo visa analisar os trabalhos vencedores do Prêmio Adelmo Genro Filho na categoria Iniciação Científica e levantar o perfil das/dos ganhadoras/es. Considerando que a premiação reconhece pesquisas que contribuem para o campo do Jornalismo e valoriza a atuação das/os pesquisadoras/es, nos interessa identificar aspectos que representam a iniciação científica e graduação. Utilizamos a Análise de Conteúdo para categorizar os 23 trabalhos que receberam prêmio principal e menção honrosa na categoria em questão, entre 2010 e 2020. Para delimitar o perfil de quem venceu, aplicamos um questionário. Os resultados indicam que a abordagem qualitativa e a análise de conteúdo predominam na metodologia, com destaque para os jornais tradicionais como objeto de estudo. Entre as/os ganhadoras/es, quem participava de grupo de pesquisa e/ou foi bolsista de iniciação científica tende a ingressar mais na pós-graduação.
Cómo opina la prensa sobre ciencia y tecnología:
Authors: Francescutti Luis Pablo
Published: February 2023

Aunque la información periodística sobre ciencia y tecnología ha sido estudiada exhaustivamente en España, subsiste una laguna acerca de la opinión publicada sobre ellas. Y no es una carencia menor, toda vez que ese género periodístico cumple una función crucial en el sistema de la opinión pública al establecer los temas a debatir y suministrar posturas y argumentos al público, y, en lo que a aquella temática respecta, contribuir a la cultura científica y al interés en la I+D y la política científica. Paliar en parte esa falta es el objetivo de este primer análisis exhaustivo de la opinión sobre dichos tópicos publicada en dos periódicos de referencia españoles, El País y La Vanguardia, durante un año entero.
Reseña de El delito televisado
Authors: Berti Hugo
Published: February 2023

Entre 2016 y 2020 un grupo de dieciséis investigadores y otros tantos auxiliares de investigación estudiaron el proceso de producción de noticias sobre delitos, inseguridad y violencia en canales de televisión abierta de las ciudades de Buenos Aires, Córdoba, Rosario y Mendoza, y la recepción de sus audiencias. El proyecto concluyó con la publicación por Editorial Biblos de los principales hallazgos en el libro El delito televisado, editado por Gabriel Kessler, Martín Becerra, Natalia Aruguete y Natalia Raimondo Anselmino.Los capítulos de El delito televisado podrían encontrarse dispersos en revistas académicas de comunicación como ésta, pero reunidos en el formato de un libro presentan una estructura secuencial, descrita en la Introducción1, que recomiendo seguir en su lectura. La complementariedad de sus partes convoca a una comprensión integradora de los recortes parciales del objeto que se va construyendo con el discurrir de las páginas.
PRINCIPAL COMPONENT ANALYSIS AND CLASSIFICATION OF SUGARCANE PRODUCTION DATA IN BURUNDI
Authors: Emmanuel BARANKANIRA , NDIKUMANA  , Benjamin NITUNGA
Published: February 2023

This study aims at identifying groupings of individuals (years) from sugarcane production data in Burundi by applying Principal Component Analysis (PCA) and classification, and computing clusters’ distances between centroids. These data were obtained from the Ministry of Environment, Agriculture and Livestock in Burundi and cover a period from 2000 to 2019, i.e. 20 years. The variables used are mean sugarcane yield, sugar production, cultivated area, sugarcane production, molasses production, herbicide inputs, mean temperature and cost of sugar production. R software version 3.6.1 was used to analyze data. This study shows that the years 2002 and 2013 are opposed by the first factorial axis while the years 2001 and 2017 are opposed by the second one. The years 2000, 2002, 2008, 2012, 2013 and 2017 are better represented on the principal factorial plane. The years 2017 and 2019 are characterized by high values of herbicide inputs and cultivated area while the years 2011, 2012 and 2013 are characterized by high values of mean temperature and mean sugarcane yield. The year 2015 is characterized by high values of sugar production, sugarcane production, cost of sugar production and molasses production.
EFFECT OF NITROGEN RATES ON GROWTH, FRUIT AND SEED YIELD OF OKRA (Abelmoschus esculentus L. Moench)
Authors: M.M Badamasi , H Ibrahim , B Abdullahi , T.M Salaudeen
Published: February 2023

A Field trial was conducted at the Teaching and Research Farm of the Federal University of Technology, Minna (Southern Guinea Savanna ecological zone of Nigeria) during the 2019 and 2020 cropping seasons. The experiment was laid out in a Randomized Complete Block Design and replicated three times. The treatments consisted of two okra varieties (NHAe47-4 and LD 88) and five rates of nitrogen fertilizer (0, 30, 60, 90 and 120 kg N ha-1). Each plot measures 2×5.25 m (10.5m2) comprising of eight ridges. Parameters measured included days to first flower bud initiation and opening, days to 50% flowering, plant height, number of leaves, abortion incidence, number of productive branches, number of fresh fruits, number of seeds, weight of seed and 100 seed weight were determined among others. Data collected were subjected to analysis of variance (ANOVA) using SAS Statistical package 9.2. At 5% level of probability means were separated using Student- Newman Keuls (SNK) Test. Application of 90kg N/ha to okra is therefore suggested for good growth, improved fruit and seed yield in the studied zone. NHAe47-4 fruits contained more number of seeds than LD88 variety.
ASSESSMENT OF CAUSES AND EXTENT OF POST-HARVEST LOSSES OF WHITE SWEET POTATO ROOTS DURING STORAGE IN MOROGORO REGION, TANZANIA
Authors: Richard Kimako Joseph , Silayo Valerian. C. K. , Mrema Geoffrey C.
Published: February 2023

Many studies have revealed that losses of sweet potatoes occur due to mechanical injury, high moisture content of the roots, attack by rodents, physiological spoilage and weevil. This study was conducted to assess the causes and extent of post-harvest losses of white-coloured sweet potato roots during storage in Gairo district and Morogoro municipality in Morogoro region, Tanzania. The assessment was conducted in eight (8) wards of the two areas by using a questionnaire to capture data on bio-data of farmers’ and traders’, awareness of white-coloured sweet potato root losses and storage practices. The collected data were analyzed using Statistical Package for Social Science (SPSS) version 25. According to the findings, the most major cause of post-harvest losses was rodent attack, which was reported by 26.53% and 25% of farmers and traders in Gairo and Morogoro municipalities, respectively, and the extent of white-coloured sweet potato root losses observed was 18.36% of farmers and traders in Gairo and 79% of farmers and traders in Morogoro municipality have reported to suffer from moderate post-harvest losses. The study results indicate that there is a need to improve post-harvest loss awareness among white-colored sweet potato farmers and traders in order to reduce loss and thus begin producing profitably. Controlling rodents, avoiding injury, building a proper storage facility and inspecting the stores on a regular basis are the most important aspects to consider when preventing losses
SENSORY QUALITY OF STIFF PORRIDGE (UGALI) PREPARED FROM PUMPKIN AND SOY BEAN SEEDS FORTIFIED MAIZE FLOUR
Authors: Daza Roina D. , Chove Bernard
Published: February 2023

Maize is a major food staple in most of the sub- Saharan African countries. Maize flour is mostly rich in carbohydrates, which provide energy to the human body. Nutritionally, maize flour is deficient in the other major diet requirements of proteins, vitamins and essential minerals. In this study, maize flour was enriched using pumpkin and soybean seed flours and the sensory qualities of the resulting composite flours were evaluated. Four formulations of maize, soy bean and pumpkin seeds flours were prepared by compositing various proportions of each ingredient. The flours were produced by grinding the seeds using a hammer mill to a particle size fine enough to go through a 1 mm sieve size. The composite flours were using to prepare stiff porridges (ugali), which is the popular format of preparation for this meal. Sensory quality of the flours and stiff porridges were evaluated. Sensory attributes evaluated for the composite flour ugali were aroma, color, texture, general appearance, smell, flavour, hardness, springiness, oiliness, taste and general acceptability. There was no significant difference in smell, appearance, texture, flavour, hardness, springiness across the formulations among the panelists. A significant difference was observed on color, oiliness, taste, appearance. The mean score was above 5 for all parameters, which is in the middle of the 9- point hedonic scale. These findings indicate that generally all the formulations were accepted. The instrumentally evaluated results using a texture analyzer indicated a significant difference in hardness, cohesiveness and springiness in the stiff porridge samples. But all samples were accepted regardless of the differences, indicating that the differences were not big enough to influence the human sensory organs.
EVALUATION OF FUSARIUM RESISTANCE TESTS ON MAIZE APPLIED IN THE NATIONAL VARIETY REGISTRATION IN HUNGARY
Authors: Kovács B  , Pécs M  , Takács N Joszt- , Szőke C
Published: February 2023

With respect to maize, as one of the most significant agricultural plant species in the world, resistance to Fusarium is particularly important since chemical control against it is difficult. For food safety, the National Food Chain Safety Office of Hungary (NFCSO) tests the resistance of varieties reported for national registration against Fusarium stalk and ear rot (Fusarium spp.). In this study, we present the results obtained based on the current methodology of resistance test. Based on the comparison of Fusarium infection of the variety trial set up in 12 different production sites (Variety Trial Station) in years under test (2014, 2015 and 2016), we test the effects of the harvest year and trial site based on the rate of infection and the susceptibility/resistance of 19 hybrids tested for 3 years. There is significant difference between harvest years, trial sites, and hybrids based on the infection of stalk and ear rot. Based on our findings, the current methodology can be successfully applied to determining the level of field resistance.
EFFECT OF SEVERAL TYPES AND DOSES OF COMPOST FROM CELLULOLYTIC MICROBIAL DEGRADATION ON AGGREGATE STABILITY OF ULTISOLS SOIL
Authors: Ulfah Nizar , Setiawati Mieke Rochimi , Devnita Rina
Published: February 2023

Ultisolss are one of the marginal soil types that dominate drylands in Indonesia. The main problem of Ultisolss is poor nutrient conditions and low physical properties. The productivity of this soil is low because it has low soil aggregate stability and also has poor biological and physical properties. Research on superior cellulotic microbes in termite nests used as a starter for the decomposition of agricultural waste and changes in the physical properties of Ultisols soil needs to be carried out to determine the effect of applying the type and dose of compost resulting from the degradation of cellulotic microbes to improve the physical properties of Ultisols soil. This experiment was conducted from July 2019 to September 2021 at Ciparanje Experimental Farm, Faculty of Agriculture, Univesitas Padjadjaran. The method used was experiment with Randomized Block Design consisting of 9 treatments and repeated 3 times, namely straw compost 5 tons/ha, 10 tons/ha, 15 tons/ha; sugarcane bagasse compost 5 tons/ha, 10 tons/ha, 15 tons/ha; oil palm empty fruit bunch compost 5 tons/ha, 10 tons/ha, 15 tons/ha. Based on the research of compost degradation results by cellulotic microbes, rice straw compost 15 tons/ha can provide the best aggregate stability results.
THE EFFECT OF COVID-19 PANDEMIC ON THE TOURISM TRAVEL AND RISK MANAGEMENT IN THAILAND
Authors: Kongnun Tunwarat , Rattanapong Sudarat , Yuphuang Chonticha , Puttivisit Pongpon , Masoot Maneejan
Published: February 2023

The study aims to measure the effect of the COVID-19 pandemic on tourism travel and risk management in Thailand. This review utilised journals, historical records, newspaper articles, World Health Organization statistics, governmental data, and website materials on COVID-19 incidences in tourism and developed a new risk management method to deal with the crisis and post-crisis recovery. The objectives were to: 1) understand how tourism travel regain after the Covid crisis, 2) find out the opinions of tourism travel about the tourism opportunities after the COVID-19 crisis.; 3) explore the ideas on how tourism travel will adjust or adapt to fit with a shift in travel priorities after the COVID-19 pandemic. The purposive sampling method was used data through in-depth interviews with hotel and restaurant operations. During Aug-Sept 2020 in the provinces that are the most controlled areas are Bangkok and Chiang Mai, the qualitative data were analysed using Grounded Theory by symbolic interaction. According to the main finding, hygiene and safety are the most important priorities for tourists when they can travel again so the use of hygiene and safety protocols along with the collaboration with the public sector, and the support from the government. Also, crisis management strategies and risk management departments are vital for tourism travel to deal with challenges after the crisis.
Penguatan Moderasi Beragama Berbasis Keluarga melalui Bimbingan Pra-Nikah bagi Calon Pengantin
Authors: Nurasiah Yayah
Published: February 2023

Moderasi beragama atau sikap moderat dalam beragama secara umum merupakan sebuah proses untuk memahami sekaligus mengamalkan ajaran agama secara adil dan seimbang. Memahami dan mengamalkan agama secara adil dan seimbang dalam keluarga berguna agar pasangan yang sudah menikah dapat terhindar dari perilaku yang dapat merusak kehormatan dan martabat keluarga. Salah satu penguatan meoderasi agama berbasis keluarga yang bimbingan pranikah. Pendekatan yang  dilakukan dalam penelitian  ini  yaitu  pendekatan  kualitatif  dengan  menggunakan  metode studi kepustakaan. Hasil penelitian menunjukan bahwa cara pandang dan sikap moderat dalam beragama sangat penting bagi masyarakat. Terutama jika hal tersebut dimulai dari keluarga. Ada beberapa materi yang sangat penting untuk penguatan moderasi beragama dalam keluarga, diantaranya: toleransi, kepemimpinan dalam keluarga, pembagian peran dalam keluarga, relasi berkualitas antara kepala dan anggota rumah tangga, membudayakan musyawarah dalam pengambilan keputusan.
Implementasi Metode Sedayu dalam Meningkatkan Kemampuan Siswa Membaca Al-Qur’an
Authors: Intan Intan , H Mansyur Masykur
Published: February 2023

Penelitian ini merumuskan tiga permasalahan, yakni :1. Bagaimana penerapan metode Sedayu dalam meningkatkan kemampuan anak membaca Al-Qur’an di pondok pesantren Tarbiyatul Wildan Nihayatul Amal. 2. Bagaimana peningkatan kemampuan anak membaca Al-Qur’an di pondok pesantren Tarbiyatul Wildan Nihayatul Amal. 3. Apa saja factor pendukung dan penghambat dalam meningkatkan kemampuan anak membaca Al-Qur’an di pondok pesantren Tarbiyatul Wildan Nihayatul Amal. Tujuan penelitian ini adalah 1. Untuk mengetahui penerapan metode Sedayu dalam meningkatkan kemampuan anak membaca Al-Qur’an di pondok Pesantren Tarbiyatul Wildan Nihayatul Amal. Metode penelitian yang di gunakan adalah Metode Penelitian deskriptif kualitatif yaitu penelitain yang menghasilkan data deskriptif berupa kata – kata tertulis maupun lisan dan perilaku yang dapat diamati. Dalam penelitain ini yang menjadi responden adalah pengasuh, guru dan anak. Adapun prosedur pengumpulan data dengan teknik wawancara, observasi dan studi dokumentasi. Dari hasil penelitain tesebut maka dapat diketahui bahwa penerapan metode Sedayu dalam meningkatkan kemampuan anak membaca Al-Qur’an di pondok Pesantren Tarbiyatul Wildan Nihayatul Amal cukup baik, hal ini terbukti bahwa guru sudah menrapkan metode Sedayu sehingga siswa dapat meningkatkan kekmapuan membaca Al-Qur’an dengn baik dan benar, dengan factor pendukung 1. Guru, harus benar-benar faham dengan pola piker anak dan berkualitas ketika mengajar dan 2. Orang tua, mendukung, memberi semangat, dan memperhatikan anaknya, sehingga yang diharapkan oleh pihak sekolah dan guru dapat berjalan.
Relationship between Home Depot and Lowe’s Under Impact of Major Events
Authors: Chen Jia-Yi , Yang Grant
Published: February 2023

Home Depot and Lowe’s are two of the world’s largest home building materials retailers. We analyze whether the two are in a competitive relationship or the same dilemma under the impact of major events by using the obvious structural breakpoints and combining them with the event research method. An empirical study of the major events is conducted corresponding to the major events at the time node where the obvious structural breakpoints are located. Based on the revenue and profit data from 1996 to 2021, the two companies are compared for the changes in revenue and profits under the impact of the same major event. The results show that the major events affect the development of the entire home building materials retail industry and the company's operation. The internal impact prompts both parties to actively adjust their internal business to be competitive, and several events affect only individual companies. However, certain significant events have little impact on the company’s revenue.
Total Utility Payment Schemes and New Landscape- Strategic Implications for Mainland China and Taiwan
Authors: Yeh Chih-Hung
Published: February 2023

Consumer payment methods and factors affecting consumer choice of payment methods are analyzed in this study. Convenience, security, and incentives are major factors for consumers to select payment methods or schemes. The dichotomy of consumer payment methods or schemes is used for defining primary consumer payment methods or schemes and confined consumer payment schemes. For expanding uses and profits of the operator(s), consumer payment methods tend to and need to evolve into total utility payment schemes (TUPS), which leads to a drastically new consumer payment landscape. It also affects consumer businesses as well as consumer banking and financial services. Strategies of fast TUPS and swift expansion into Mainland-Chinese frequently would increase substantially the global consumer payment share of Mainland Chinese payment. Close cooperation between Mainland China’s UnionPay and Taiwan banks’ credit/debit cards with appropriate incentives to consumers shall be a strategy in terms of market share and profitability.
Analysis of Impact of Network Externality Product Bundling Announcement Strategy
Authors: Chen Shih-Shen
Published: February 2023

In the information age, typically buyers bear costs when they change their shopping habits. Therefore, it is indispensable that manufacturers know these costs during transitioning technology and brand for success in the current information economy. Previous research about switching costs emphasized corporate behavioral tactics and corporate competitiveness in the market. However, in these models, customers do not indeed change the account of the business, being charged the same price, and the switching cost is higher enough to prevent conversion. In reality, customers’ brand changes. This research hypothesizes that commodity’s consumption utility with externality increase with an increase of disposable income and externality but decreases with increasing of reservation utility’s shadow price when concerning consumption’s switching cost and endogenizing costumers behavior. When a product announcement makes a consumer group’s preference for externalities greater than that of another consumer group, the externality of its brand announcement inevitably increases. However, to increase the externality, it is necessary to attract more users to join the purchase of the brand, which naturally increases the manufacturer’s request for the creation of forenotice and the switching cost also increases.
The state of underground sources and public water supply systems of the Oryol Region and measures to improve the water quality
Authors: Лапин П.А. , Елисеев Д.В. , Копылов С.А. , Пашкова В.А.
Published: February 2023

Рассматривается состояние водного фонда Орловской области, включающего подземные и поверхностные источники водоснабжения. Определены основные причины неудовлетворительного качества воды в централизованных системах водоснабжения. Для оценки качества подземных вод и воды в водопроводных сетях по микробиологическим и санитарно-химическим показателям использована методика, основанная на фильтрации некоторого объема воды через мембранные фильтры с последующей идентификацией по биохимическим свойствам. Рассматривается состояние подземных источников централизованного водоснабжения и водопроводов в районах Орловской области за 2019–2021 годы на соответствие нормативным требованиям. Предложен ряд мероприятий в целях выполнения региональной программы «Повышение качества водоснабжения на территории Орловской области» для улучшения водоснабжения на территории районов области.

The state of the water resources inventory of the Orеl Region including underground and surface sources of water supply, is considered. The main causes of unsatisfactory water quality in public water supply systems are specified. To assess the quality of groundwater and water in water distribution networks in terms of microbiological and sanitary-chemical indicators, a method based on the filtration of a certain volume of water through membrane filters with subsequent identification by biochemical properties was used. The state of the underground sources of public water supply systems and distribution networks in the districts of the Orel Region for 2019–2021 is considered for compliance with the regulatory requirements. A number of measures have been proposed in order to implement the regional program «Improving the quality of water supply in the Orel Region» to improve water supply in the Region.
Consideration of the load profile while sizing the pump
Authors: Костюк А.В. , Соколов С.А.
Published: February 2023

Эффективность работы насосного оборудования является приоритетной задачей для водоснабжающих организаций. Основное условие эффективной работы насосов – это правильный выбор параметров насосов и способов их регулирования в соответствии с требованиями системы. Особенностью систем водоснабжения является большое разнообразие режимов работы как в течение суток, так и в перспективе на несколько лет. На практическом примере показана необходимость учета фактических и перспективных режимов работы насосной станции при подборе типоразмеров насосных агрегатов. Приведен анализ режимов работы насосов разного типоразмера и способа регулирования. В качестве критерия оценки наилучшего варианта использованы удельное и общее энергопотребление. Данный подход позволяет обеспечить эффективную и надежную эксплуатацию насосного оборудования в течение всего жизненного цикла.

The efficiency of pumping equipment is a priority for water supply providers. The main condition for the efficient operation of pumps is the correct choice of pump parameters and methods of their control in accordance with the requirements of the system. A specific feature of water supply systems is a wide variety of operating modes both within 24 hours and projected for several years. A practical example shows the need to take into account the actual and prospective modes of operating a pumping station while selecting the sizes of pumping units. An analysis of the operating modes of pumps of different sizes and control methods is given. Specific and total energy consumption was used as a criterion for estimating the best option. This provides for the efficient and reliable operation of pumping equipment throughout the entire life cycle.
Introduction of digital innovations as a factor in the development and modernization of the insurance market
Authors: Khabarov V. I. , Kolbina M. S. , Kushelev I. Yu.
Published: February 2023

Aim. The presented study aims to investigate major problems associated with the introduction of digital innovations in the insurance industry; to determine the role and prospects for the development of digitalization in insurance; to systematize information technologies and prioritize the ones that best meet the strategic goals of insurers.Tasks. The authors explore the development stages of digital innovations in the insurance sector; identify factors affecting the improvement of insurance business management; assess and substantiate the need to introduce innovative digital products in insurance.Methodology. This study uses general and private scientific methods, as well as formal and logical approaches to analyze the contemporary insurance sector and to identify major directions for the development of digital innovations in the insurance business.Results. Factors affecting the improvement of insurance business management are identified. Information technologies and tools are systematized and the ones that best meet the strategic goals of insurers are prioritized.Conclusions. Considering the current economic situation and fierce competition, it is the right time for insurance companies to improve the quality, speed, and breadth of innovation. Today, a customer-oriented, personalized approach to the consumer is very important as it makes it possible to retain existing policyholders and attract new ones. Companies need to make the most of the opportunities offered by new digital tools and technologies to reach a new level of interaction with customers. The proposed steps to improve innovation will help to plan and implement innovative projects more efficiently.