bluuebunny/crossref_metadata_2025_split huggingface dataset:
Compendio y análisis de la experimentación arqueológica con vistas al megalitismo
Authors: Tirado Salazar Rodrigo Octavio 
Published: June 2023

El presente artículo es un trabajo que busca sintetizar varios elementos relacionados con las construcciones megalíticas, además hablar de los diversos experimentos que se han realizado en los últimos 30 años con relación a estas mismas y por medio del análisis tecnológico poder comprender algunos rasgos de estas sociedades tanto en el ámbito económico como en el social. Además concluimos con la problemática mediática que existe con relación a la construcción de los megalitos ya que al estar, los factores económicos, llevando el timón de la divulgación científica. La sociedad tiende a manejar las teorías más disparatadas y menos fundamentadas de todas y esto se ve reflejado en la falta de fomento ara la investigación científica.Palabras clave: megalitismo, construcciones megalíticas, materias primas, experimentación megalítica, neolítico, Megalitismo europeo, extraterrestres y megalitos. ABSTRACTThis article is a work that seeks to synthesize several related elements with the megalithic constructions, also talk about the various experiments made in the last 30 years and through the technological analysis to understand some features of these societies in economically and socially sense. We also conclude with the problematic media that exists with regard to the construction of the megaliths that being, economic factors, taking the helm of scientific communication. Society tends to handle the wildest and least informed of all theories and this is reflected in the lack of building ara scientific research.Key words: Megalithism, Megalithic construction, Megalithic experiments, Neolithic, Megalitism in Europe, UFO megalithism.
A new protocol for radio frequency heating of low-moisture, viscous sauces and its temperature uniformity optimisation
Authors: Shi H.J. , Li X.B. , Yan Z.M. 
Published: June 2023

AbstractRadio frequency (RF) heating of agri-food, especially low moisture viscous sauces (LMVS), have obvious advantages. However, uneven heating is one main problem of RF heating technology that has to be solved. Due to the unclear heating mechanism and the difficulty to measure the three-dimensional temperature distribution in the heated object, computer-aided analysis method was adopted. Based on the RF heating numerical calculation model after experimental verification and the characteristics of polyetherimide (PEI) assisted RF heating of peanut butter (PB), this study proposed an improved method for an existing protocol. Meanwhile, parameters of the new protocol were optimised by the Multi-objective Global Optimisation (MGO) of its surrogate model. Results demonstrated that the best size of PEI block in the new protocol was Φ100 × 9.5 mm and the positional height was 12 mm. When the pasteurisation temperature Tp was set to 70 °C and the control temperature Tc was set to 75 °C, the temperature uniformity evaluation indices, Over-shoot Temperature Control Index (OTCI) and Targeted Penetration Depth (TPD), were 0.920% and 3.975 mm, respectively. Compared with 4.845% and 4.940 mm before improvement, the new protocol achieved significant optimisation and improved the temperature uniformity effectively. This also proved the feasibility of MGO method of surrogate model in relevant studies.
Lifespan of wooden houses and analysis of their environmental and social indicators
Authors: Budajova Jana , Vilcekova Silvia , Burdova Eva Kridlova , Harcarova Katarina , Mesaros Peter 
Published: June 2023

AbstractThis paper deals with life cycle analysis of three wooden houses in terms of environmental impact indicators, construction, and operational costs. At the same time, indoor environmental quality of the houses is investigated. From the results achieved, it can be concluded that wooden house 3 shows the lowest emissions of CO2e/m2.year compared to other houses. Based on overall investigation wooden house 1 is the most advantageous. Concrete structures and mineral wool have the highest share of global warming potential. On the contrary wooden house 3 has the largest life cycle costs. Results of indoor environmental quality show that the permissible limits of the measured physical and chemical factors are not exceeded during the measurement.
Designing reinforced HSC rectangular beams using optimization techniques
Authors: Sultan Hussein Kareem 
Published: June 2023

AbstractThe current work discusses optimizing the structural design of reinforced high strength concrete rectangular sections under design loads. Using a least-cost design criterion and minimal design variables, an analytical approach to the problem is devised. A nonlinear mathematical programming format for the formulation of the problem is among the things that are demonstrated. To demonstrate how the formulation can be used in line with the ACI 318-08 standard, several typical cases are given. The outcomes are compared to those obtained from existing design practice. The ideal solution demonstrates unequivocally that significant reductions in the anticipated absolute costs of the building materials to be employed are possible and without making significant changes, this method may be expanded to address other portions.
Optimal Control of Vaccination for Dengue Fever in SIR Model
Authors: Andiraja Nilwan , Basriati Sri , Safitri Elfira , Rahmadeni Rahmadeni , Martino A 
Published: June 2023

According to data from The Indonesian ministry of health, many of individuals suffere dengue fever until may 2023 in Indonesia. To reduce its cases, in this article, a single of control strategy of vaccination for infected human by dengue fever has been proposed. To obtain the optimal control, the SIR model has been modificated with single control and the new objective function has been made before the Pontryagin minimum principle is used in this article. According to the differential equation in the model of the dengue fever and the objective function, we made the Hamiltonian equation. Then, from it, the state equation, costate equation, and stationary condition has been made from the Hamiltonian equation so we obtained the optimal control in vaccination. In the end of this article, we did the numerical simulation using the sweep forward-backward method. Through numerical simulation, we find that the control succeed to reduce the infected human by dengue fever and also increase human recovery from this desease. Futhermore, the control of vaccination for infected human should be implemented not only in this mathematical model but also into real life to decrease the dengue fever case.
Prospek Usaha Agroindustri Kunyit di Lamteuba Kecamatan Seulimum Kabupaten Aceh Besar (Studi Kasus pada Sentra Insan Kreatif Lamteuba)
Authors: Nasution Rahmi Khoiriah , Deli Anwar , Widyawati Widyawati 
Published: June 2023

Kunyit merupakan salah satu jenis tanaman obat yang banyak digunakan oleh masyarakat.Budidaya tanaman obat di Indonesia sendiri masih menggalami banyak kendala salah satunya yaitu ketidak mampuan petani dalam menjaga kualitas dan mutu tanaman obat yang disebabkan oleh minimnya bimbingan dan pelatihan yang diberikan kepada petani serta kurangnya dukungan pembiayaan dalam mengembangkan usaha agribisnis, terutama untuk petani skala kecil.Terbatasnya pengetahuan yang dimiliki oleh petani kunyit baik itu teknologi maupun pasar, membuat petani kunyit lebih memilih menjual langsung hasil panen kunyit dibandingkan mengolah terlebih dahulu menjadi produk lain. Tujuan penelitian ini adalah untuk mengetahui teknik pengolahan, kelayakan usaha industri pengolahan bubuk kunyit dan untuk mengetahui saluran pemasaran manakah yang paling efesien di industri tersebut. Hasil penelitian menunjukkan bahwa teknik pengolahan bubuk kunyit ini sudah dikatakan modern dan pengolahan bubuk kunyit ini juga sudah memberikan keuntungan dan layak untuk dijalankan.Selain itu, harga jual produk bubuk kunyit ditingkat Industri, Pedangan Perantara dan konsumen sudah efisien dilihat dari EP ≤ 50%. Turmeric is one type of medicinal plant which is widely used by the society. In Indonesia, the medicinal cultivation had many obstacles, one of which is the inability of farmers to maintain the quality and the grade of medicinal plants that is caused by the lack of guidance and training provided to farmers and lack of financial support in developing agribusiness, especially for small-scale farmers. The limited knowledge possessed by turmeric farmers, both technology and market, makes turmeric farmers prefer to sell the turmeric harvest rather than processing it into other products. The purpose of this study was to determine the processing techniques,appropriateness business obtained from the turmeric powder processing industry and to find out which marketing channels were the most efficient in the industry. The results showed that the processing of turmeric powder has been said to be modern and processing of turmeric powder has also provided benefits. In addition, the selling price of turmeric powder products at the Industrial level, Intermediary Sword and consumers is efficient, seen from EP ≤ 50%.
ANALISIS TREND VOLUME EKSPOR BIJI KOPI DARI INDONESIA KE AMERIKA SERIKAT
Authors: Fadila Nur , Safrida Safrida , Zulkarnain Zulkarnain 
Published: June 2023

Salah satu tujuan ekspor utama biji kopi Indonesia adalah Amerika Serikat yang merupakan salah satu negara dengan konsumsi kopi yang cukup tinggi, namun volume ekspor berfluktuasi dan menjadi cenderung menurun. Penelitian ini bertujuan untuk menganalisis trend volume ekspor biji kopi dari Indonesia ke Amerika Serikat. Penelitian ini dilakukan di Indonesia dengan menggunakan data sekunder berupa data volume ekspor biji kopi Indonesia ke Amerika Serikat dari tahun 2004-2018. Analisis yang digunakan yaitu analisis trend. Berdasarkan hasil penelitian ekspor biji kopi dari Indonesia ke Amerika Serikat menunjukkan trend penurunan dengan proyeksi ekspor pada tahun 2028 mencapai 38.863 ton.
PENGARUH GANGGUAN PANDEMI COVID-19 TERHADAP RISIKO RANTAI PASOK PADA SUBSISTEM PENGOLAHAN KOPI ARABIKA GAYO MENGGUNAKAN MODEL SISTEM DINAMIK DI KABUPATEN BENER MERIAH (STUDI KASUS KOPERASI EKSPORTIR KOPI KOKOWA GAYO)
Authors: Desilawati Seilla , Indra Indra , Nugroho Agus 
Published: June 2023

Kopi menjadi salah satu komoditas yang ikut menyumbang peran bagi pembangunan pertanian dan menjadi produk andalan ekspor di Indonesia. Pada komoditas kopi, rantai pasok kopi Arabika Gayo yang panjang diduga menjadi salah satu penyebab rendahnya pendapatan di tingkat petani. Dengan adanya pandemi Covid-19 ini, eksportir kopi Arabika Gayo mengalami dampak yang signifikan pada usahanya karena penutupan akses ke pasar global yang menyebabkan terjadinya penumpukan barang di ruang penyimpanan seiring dengan berjalannya produktivitas kopi Arabika. Penundaan pengiriman kopi ke negara-negara tujuan juga terhambat akibat pandemi Covid-19 ini. Tujuan dari penelitian ini adalah untuk mengetahui bagaimana pengaruh risiko gangguan rantai pasok kopi arabika gayo saat pandemi Covid 19 terhadap persediaan dan keuntungan koperasi eksportir kopi Kokowa Gayo di Kabupaten Bener Meriah. Metode analisis dalam penelitian ini dilakukan dengan menggunakan sistem dinamik. Berdasarkan hasil penelitian didapatkan bahwa persediaan kopi arabika di koperasi Kokowa Gayo terus meningkat akibat pandemi Covid-19 yang menyebabkan koperasi ini tidak bisa mengekspor biji kopi yang telah diolah. Keterbatasan perdagangan ekspor kopi ini juga menimbulkan masalah yang lain seperti terganggunya perolehan keuntungan yang didapat koperasi. Dimana pada masa normal atau sebelum pandemi Covid-19 koperasi dapat memperoleh keuntungan mencapai Rp. 1.000.000.000/pengiriman. Namun, pada masa pandemi Covid-19 keuntungan yang didapatkan koperasi menurun bahkan sampai mengalami kerugian.
PENGARUH PANDEMI COVID-19 TERHADAP PENDAPATAN USAHA TERNAK AYAM KAMPUNG DI DESA TIANG LAYAR KECAMATAN PANCUR BATU
Authors: Prayoga Ilham Anggit , Mardhiyah Ainul , Br Kabeakan Nana Trisna Mei 
Published: June 2023

Penelitian ini dilakukan di Desa Tiang Layar yang merupakan salah satu desa yang terletak di Kecamatan Pancur Batu, Kabupaten Deli Serdang. Tujuan dari penelitian ini untuk menganalisis pengaruh pandemi Covid-19 terhadap produksi dan pendapatan usaha ternak ayam kampung di Desa Tiang Layar Kecamatan Pancur Batu. Metode analisis data digunakan secara deksiptif lalu menggunakan rumus menghitung pendapatan peternak ayam kampung dan analisis statistik uji beda rata-rata atau t-hitung (independent sample t-test) dengan uji satu arah. Hasil penelitian menyimpulkan bahwa rata-rata produksi ayam kampung sebelum pandemi Covid-19 sebanyak 521 ekor dan rata-rata produksi ayam kampung saat pandemi sebanyak 278 ekor. Rata-rata total penerimaan peternak sebelum pandemi covid-19 sebesar Rp. 24.986.667, dengan rata-rata biaya produksi sebesar Rp. 6.307.556, dengan rata-rata total pendapatan mencapai Rp. 18.679.112, dibandingkan dengan saat pandemi Covid-19 rata-rata total penerimaan peternak sebesar 13.360.000, dengan rata-rata biaya produksi sebesar Rp. 4.803.111, rata-rata pendapatan mencapai Rp. 8.556.889. Adapun faktor-faktor yang mempengaruhi penurunan produksi bibit ayam dan tingkat pendapatan yaitu social distancing, perolehan pakan ayam dari mitra pesantren Ar-Raudhatul Hasanah tidak didapat sementara sebab diliburkan, pemasaran terhambat dan tidak maksimal disebabkan agen hanya mengambil sekitar setengah dari hasil ternak dan hanya mengambil seperlunya saja sesuai dengan kebutuhan pasar.
Neural Network-based Finite-time Control of Nonlinear Systems with Unknown Dead-zones: Application to Quadrotors
Authors: Maaruf Muhammad , Babangida Aminu , Almusawi Husam A. , Tamas Peter Szemes 
Published: June 2023

Over the years, researchers have addressed several control problems of various classes of nonlinear systems. This article considers a class of uncertain strict feedback nonlinear system with unknown external disturbances and asymmetric input dead-zone. Designing a tracking controller for such system is very complex and challenging. This article aims to design a finite-time adaptive neural network backstepping tracking control for the nonlinear system under consideration. In addition, all unknown disturbances and nonlinear functions are lumped together and approximated by radial basis function neural network (RBFNN). Moreover, no prior information about the boundedness of the dead-zone parameters is required in the controller design. With the aid of a Lyapunov candidate function, it has been shown that the tracking errors converge near the origin in finite-time. Simulation results testify that the proposed control approach can force the output to follow the reference trajectory in a short time despite the presence of asymmetric input dead-zone and external disturbances. At last, in order to highlight the effectiveness of the proposed control method, it is applied to a quadrotor unmanned aerial vehicle (UAV).
A comparative study of intravenous dexmedetomidine and clonidine as pre-emptive analgesia to intrathecal bupivacaine in subarachnoid block - A randomized double blind study
Authors: Madhusudhana Ravi , Shree C Vidya 
Published: June 2023

: Several drugs and drug regimens are used as adjuncts to local anaesthetics for neuraxial blockade in order to enhance its efficacy. In recent times novel drugs, adrenergic agonists like dexmedetomidine and clonidine are extensively used. Very few studies have compared the equipotent doses of both the drugs when given as pre-emptive analgesia. This study compares the efficacy of pre-emptive intravenous dexmedetomidine and clonidine for prolongation of bupivacaine spinal anaesthesia.: This is a prospective double-blind comparative study conducted at a tertiary care center from January 2021 to May 2022. 90 participants satisfying inclusion criteria were chosen after obtaining ethical Committee approval and informed consent. Study participants were randomly divided into two groups. Group C (n=45) received clonidine 0.5mcg/kg IV and Group D (n=45) received 0.5mcg/kg IV over 10mins following which subarachnoid block was given with hyperbaric bupivacaine 0.5% 15mg intrathecally. The following parameters were measured as onset, duration of sensory and motor blockade, duration of analgesia and number of rescue analgesics given in the postoperative period. Onset of sensory blockade (2.40+ 0.81) and motor blockade (2.78+ 0.88) was significantly faster in group D when compared to group C. Sensory blockade duration in group C and D was (100.22+ 11.38) and (129.33+ 13.55) respectively and was statistically significant. Similarly, Motor blockade duration was prolonged in group D (156.67+ 12.25) than in group C (121.78+ 14.35). Mean duration of analgesia in group D (169.51+19.23) and group C (143.8+18.78) illustrated statistically significant difference.: Dexmedetomidine when given as a pre-emptive analgesia enhances the effectiveness of bupivacaine by prolonging its duration of action when compared to clonidine at given doses.
A retrospective evaluation of characterization, clinical course and anaesthesia management of emergency trauma surgical patients during first wave of COVID-19 pandemic at a tertiary care center in India
Authors: Lalwani Parin , Gupta Babita , Goyal Titiksha , Kumar Subodh 
Published: June 2023

: The COVID-19 pandemic resulted in nationwide lockdown followed by phased unlock to break the chain of transmission of the SARS-CoV-2 virus in India. Management of emergency trauma patients has been particularly challenging for anaesthesiologists in order to treat these high risk group of patients and preventing cross infection to healthy patients as well as health care personnel. : It is a single centre retrospective observational cohort study conducted at tertiary care hospital in North India in the patients who underwent emergency trauma surgeries during 31 March 2020-31 May 2020(Lockdown) and compared with data from 1 June 2020-31 July 2020(Unlock). To compare the effect of lockdown and unlock during first wave of Covid-19 pandemic on the volume of emergency trauma surgical patients operated within 24 hours of admission.: To evaluate the difference between the two periods of lockdown and unlock a) in the mortality rates b) covid status c) the length of hospital stay d) the mechanism of injury e)severity of injury f)proportion of aerosol generating procedures (AGP) utilized and g)demographics of the patients. Our anaesthesia experience of managing the patients differently in the pandemic, identify areas for improvement, particularly in terms of minimising exposure and optimising resource usage in the management of such emergency patients in the event of a future healthcare crisis is also discussed. Over the 2 periods of lockdown and unlock there was no statistical difference in number, age or sex distribution of the patients presenting for emergency trauma surgery. Number of covid positive patients were slightly higher during unlock but it was statistically insignificant (p=0.07) and the number of patients died during unlock was also higher during unlock as compared to lockdown but statistically insignificant(p=0.3). The median injury severity score and length of stay was also not statistically significant between two periods. Road traffic accidents were most common type of injury in both the groups, self-inflicted injury occurred in 5 patients during lockdown and zero during unlock, none of these showed a significant difference (p &#62; 0.06). General anaesthesia was the most common anaesthesia technique used in both the periods.Emergency trauma surgeries will continue to occur even in different phases of pandemics, anaesthesiologists should plan and prepare appropriately to provide anaesthesia and emergency care to these patients and prevent cross infection in healthy patients and health care workers.
The Validity and Reliability Study of Mental Health Literacy in Young Adults (MHLq)
Authors: GÜNAYDIN Nevin , ÖZPULAT Funda , ÖZTAŞ Duygu , AÇIKGÖZ İnci 
Published: June 2023

Objective: This study was conducted on the Turkish validity and reliability study of the Mental Health Literacy Scale (MHLq) in young adults.
Methods: This methodological investigation was carried out throughout the 2018–2019 academic year at a public university. The MHL, created by Dias et al. in 2018, and a sociodemographic data form were used to gather the data. 350 students between the ages of 18 and 25 participated in the study.
Results: The scale was translated from the original language into Turkish, professional opinion was sought, and to translate it into Turkish, a pilot study was conducted. The content validity index, confirmatory factor analysis, item analyses, reliability, Cronbach's alpha analysis, and test-retest scores were used to test the scale validity as well as its construct validity, internal consistency, and time invariance. The scale is four-dimensional, as was found. Confirmatory factor analysis revealed that the scale's item loads varied between 0.40 and 0.73 while its content validity was 0.98. Its 0.91 Cronbach's alpha value was discovered. The participants' average mental health literacy scores were 84.45±7.80.
Conclusions: The analyses made showed that the MHLq could be safely used as a measurement tool for young adults’ mental health literacy.
A study on the outcomes of Montessori education in China
Authors: Chen Amber , Guo Shu Jun 
Published: June 2023

Montessori education has been acclaimed as one of the best methods of training students. Despite its widespread, little is known about Montessori education and its effects in mainland China. This research aims to spur more research on Montessori education outcomes in China. A quasi-experimental method was applied in this study, to compare the executive function (EF) development of children who had attended Montessori preschool to their non-Montessori peers. The study used a behavior rating inventory of executive function, second edition (BRIEF2) Parent Form to compare parents' observations of their child's executive functions (EF). Parents of Chinese elementary-aged children (6-8 years old) at the time of the study of both Montessori and non-Montessori preschool backgrounds participated in the survey. According to the results, children of Montessori preschool backgrounds had some statistically significant better-scored EF indexes than their non-Montessori peers. While the remaining indexes were not statistically significant, mean scores were still better for children who had attended Montessori preschool overall.
Keywords: Educational software; executive function; Montessori; perceptions; teacher.
The contribution of accelerated school readiness program to learning continuity
Authors: Hunde Woyneshet Driba , Tarkegne Wudu Melese 
Published: June 2023

This study was conducted to assess the contribution of accelerated school readiness programs for learning continuity in Borena and the west Guji Zone. A descriptive survey design was employed. Data were collected from teachers, directors, supervisors, and parent-teacher association members by using questionnaires, focus group discussions, and document analysis methods. The quantitative data were analyzed by using descriptive and inferential statistics such as mean, standard deviation, and t-test and whereas the qualitative data were analyzed by narration to support the quantitative findings. The result shows that accelerated school readiness program highly enhances students learning continuity for grade one. Besides, this program improved students' academic achievement in grades one and two. Accordingly, it is suggested that the funding organizations and the Ministry of Education should maintain the sustainability and institutionalization of the program particularly in the pastoralist areas since it is a better option of providing preschool education in the country.
Keywords: Accelerated school readiness programs; learning continuity; school readiness