bluuebunny/crossref_metadata_2025 huggingface dataset:
PERENCANAAN STRUKTUR WHARF DENGAN KAPASITAS 20.000 DWT
Authors: Hutapea Daniel Sabar Menanti
Published: October 2022

Wharf merupakan fasilitas pelabuhan sebagai tempat kapal berlabuh untuk bongkar muat barang atau penumpang. PT. Paxocean merupakan perusahaan yang bergerak dibidang marine engineering di Batam. PT. Paxocean akan merancang dan membangun wharf untuk tujuan tertentu. Wharf dibangun dengan dimensi panjang 300 m dan digunakan untuk memperbaiki kapal dengan panjang 280 m dan draft 5 m dan level seabed berada di kedalaman -8 m. Dalam penelitian ini akan dipelajari dan direncanakan struktur wharf yang terdiri dari slab, fender, bollard dan sheet pile. Struktur dihitung dengan menganalisa beban dan menghitung momen terbesar yang terjadi akibat beban terfaktor. Langkah yang digunakan dalam menganalisa beban adalah dengan mengumpulkan data dan design input dari pemilik. Slab direncanakan untuk menahan beban hidup sebesar 2 t/m2 dan didukung oleh sistem pondasi tiang pancang. Slab direncanakan dengan tebal 300 mm dengan tulangan D20-200 dua lapis. Fender system direncanakan untuk menahan berthing force akibat kapal. Berthing force yang terjadi dihitung dengan kecepatan kapal sebesar 0,15 m/s. Besarnya gaya tersebut sebesar 77,06 ton dengan menggunakan UE-800 berkapasitas 119,61 ton. Bollard direncanakan menggunakan pipa dengan tebal 12 mm dan diameter 600 mm untuk menahan beban sebesar 500 kN. Kapasitas pipa baja tersebut sebesar 2304,56 kN. Sheet pile direncanakan untuk menahan tekanan aktif tanah. Momen yang terjadi akibat tekanan tanah aktif sebesar 315,7 kNm. Sheet pile KSP IIIA memiliki nilai momen tahan sebesar 1503,53cm3. Sheet pile KSP IIIA memiliki nilai section modulus sebesar 1520 cm3.
STUDI KOMPARATIF KERUSAKAN BETON PADA STRUKTUR KOLOM YANG KEROPOS DENGAN METODE GROUTING
Authors: Pratiwi Hariati , Astutik Yayuk Setyaning
Published: October 2022

Concrete is a material widely used in construction projects. The quality of concrete is strongly influenced by some of its constituent materials such as water, cement, coarse aggregates, fine aggregates and other additives. In the implementation of construction using concrete, there is a great deal of damage to concrete materials, one of which is porous or with other names voids (cavities or holes). Therefore, repair methods used for occurring damage in concrete are needed. This study used a 15cmx15cmx15cm cube-shaped concrete sample divided into three samples, namely 6 cubes of normal concrete, 6 cubes of concrete made intentionally porous with grouting method using Sikagrout215, and concrete which was intentionally made porous with a method of grouting using a mixture of cement and water (cement paste) 6 cubes. Each cube were tested its compressive strength at the stage of 7, 21 and 28 days. The results showed that the cause of porous concrete was caused by several factors including cement water factor, lack of compaction process, the aggregate ratio used, and poor workability. Concrete compressive strength results at 28 days showed that the compressive strength of normal concrete was 230,459 kg / cm², concrete grouting with 215 cycles of 318,532 kg / cm², and grouting concrete with a mixture of cement and water 316,707 kg / cm². Grouting concrete using 215 cycles has the largest value among the three samples. Hence, in this study the grouting method is the right choice to make porous concrete repaired.

Keywords: porous concrete, grouting, concrete compressive strength, column, structure
EVALUASI KONDISI ANGKUTAN MASAL DI JABODETABEK AKIBAT PSBB
Authors: Stini Lensi Oktavia
Published: October 2022

Jabodetabek development has had an impact on the supporting transportation system, the more developed Jabodetabek, the more developed the existing transportation system. But at this time in various countries in the world there is an outbreak of Covid-19 which has a major impact on all aspects. In Indonesia a system has been set up aimed at suppressing the expansion of the Covid-19 outbreak by implementing a Large-Scale Social Restrictions (PSBB) system. Large-scale social restrictions are restrictions on certain activities of residents in an area suspected of being infected with Corona Virus Disease 2019 (COVID-191 in such a way as to prevent the possibility of spreading Corona Virus Disease 2019 (COVID-I9). Large-scale Social Restrictions must be based on epidemiological considerations, the magnitude threats, effectiveness, support of resources, operational technical, political, economic, social, cultural, defense and security considerations.The impact of the PSBB is strongly felt in aspects of the existing transportation system, therefore there is a need to study "Jabodetabek Transportation System in the Cons PSBB ". This research uses descriptive analysis. This method is used to identify the impacts that are influenced by factors that are happening. Based on the analysis that has been done, it is known that the Jabodetabek transportation system service during the PSBB implementation based on the existing influence factor is the public transportation system in Jabodetabek felt the overall impact such as railroad tracks, public buses, conventional taxis and online taxis and motorcycle taxis. This public transportation service system is limited in terms of operating time and passenger restrictions, so this condition is not good for many people because it also impacts on the weakening of the economy, reduction in transportation modes and passenger congestion. So that this condition is not good in various aspects, but the influence factor is aimed at suppressing the spread of Covid-19 which is still endemic in Indonesia, especially in the Jabodetabek area which has become a red zone. The decrease in the number of passengers occurred since January 2020, starting on April 15, 2020 the number of passengers decreased significantly, namely 78.70% in KRL, 90.12% in TransJakarta, 94.12% in MRT, 93.05% in LRT, 64.71% in Taxi and 58.33% in taxibike.

 Keywords: Transportation System, Covid-19 Impact, Large-Scale Social Limitation.
Perilaku Pengendara Sepeda Terhadap Keselamatan di Jalan
Authors: Febrianto Danang , Dewanti Dewanti , Muthohar Imam
Published: October 2022

In the middle of social distancing imposed by the government of Indonesia to reduce the spread rate of COVID-19 virus, the use of bicycles has emerged as a new trend in various cities in Indonesia, one of which is the Special Region of Yogyakarta. However, the increasing growth of bicycle users are also directly proportional to the data on cyclists' accidents. One of the factors causing high number of accidents on cyclists is the human factor. The purpose of this study was to analyze the behavior of cyclists in the Special Region of Yogyakarta. The data used in the study were granted from questionnaires and field observations of cyclists. Descriptive analysis is used to describe the characteristics and behavior of cyclists. Samples were taken using purposive sampling method with a questionnaire resulting the number of respondents as many as 362 cyclists. The results showed that the behavior of cyclists in Special Region of Yogyakarta were quite good, but there are still a lot of cyclists that do not know about regulations governing road cycling safety. It was found that the use of safety equipment does not present traffic compliance.
Challenges of Developing a Logistics Hub Case Study: Batu Ampar Port
Authors: Wibowo Petrus Haryanto , Husni Al
Published: October 2022

Batam as a region with leading sectors of marine, tourism, industry, fisheries and Batu Ampar as Main Port has the potential to be developed. One of the main centers of activity is large ports and international airports that have the potential to become national and international-scale economic gateways for logistics hubs. The aim of this research was to determine The Challenges of developing a logstics hub in Batu Ampar Port. This research uses descriptive qualitative approach and secondary data from the Batam port office and the Human Settlements and Spatial Planning Office. The results of this research are there are some challenges from the aspects of Geography, Infrastructure, Connectivity, Transportation costs and time, Trade movement requirements, Shipping dependability, Transport and trade regulations. Poor logistics performance is a major obstacle to trade growth in most cities in Indonesia. In this case there is an international shipping port but does not yet have adequate facilities and infrastructure to become a logistics hub.
Implementasi Pembelajaran Berorientasi HOTS dan Kreativitas pada Muatan Pelajaran IPA Siswa SD Negeri Sariharjo
Authors: Bonifatius Sigit Yuniharto  , Ana Fitrotun Nisa
Published: October 2022

Tujuan dari penelitian ini adalah menguji kemampuan siswa SD Negeri Sariharjo menggunakan Pembelajaran Berorientasi High Order Thinking Skills (HOTS) dan kreativitas dalam muatan pelajaran IPA. Penelitian ini menggunakan teknik deskriptif kualitatif. Teknik pengumpulan data dalam penelitian ini adalah wawancara, observasi, dan dokumentasi. Data dianalisis dengan menggabungkan informasi yang diperoleh dari beberapa sumber data pada hasil wawancara, hasil observasi, dan catatan tertulis. Hasil dari penelitian ini menunjukkan bahwa implementasi pembelajaram berorientasi HOTS dan kreativitas ditempuh melalui tahap 1) menganalisis target kompetensi, 2) merumuskan indikator kompetensi, 3) pemilihan model pembelajaran discovery learning, 4) merecanakan kegiatan pembelajaran, 5) pemilihan media serta instrumen, 6) kegiatan pembelajaran, 7) evaluasi, dan 8) refleksi. Implementasi pembelajaran berorientasi HOTS dan kreativitas berdampak pada tumbuhnya kemampuan kreativitas siswa dalam menemukan pengetahuannya sendiri, berpikir kritis dalam pembelajaran, dan dapat memecahkan masalah yang dihadapi.
Phase I and Phase II control charts for the variance and generalized variance
Authors: van Zyl R. , van der Merwe A. J.
Published: October 2022

By extending the results of Human, Chakraborti and Smit (2010), Phase I control charts are derived for the generalized variance when the mean vector and covariance matrix of multivariate normally distributed data are unknown and estimated from m independent samples, each of size n. In Phase II predictive distributions based on a Bayesian approach are used to construct Shewart-type control limits for the variance and generalized variance. The posterior distribution is obtained by combining the likelihood (the observed data in Phase I) and the uncertainty of the unknown parameters via the prior distribution. By using the posterior distribution the unconditional predictive density functions are derived.
A study of the jackknife method in the estimation of the extremal index
Authors: Ferreira Marta
Published: October 2022

Clustering of high values occurs in many real situations and affects inference on extremal events. For stationary dependent sequences, under general local and asymptotic dependence conditions, the degree of clustering is measured through a parameter called the extremal index. The estimation of extreme events or parameters is usually based on a k number of top order statistics or on the exceedances of a high threshold u and is very sensitive to either of these choices. In particular, the bias increases with a growing k and a decreasing u. The use of the Jackknife methodology may help reduce bias. We analyse this method through a simulation study applied to several estimators of the extremal index. An application to real data sets illustrates the results.
The weighted Hellinger distance in the multivariate kernel density estimation
Authors: Mugdadi A. R. , Anver Haneef
Published: October 2022

The kernel multivariate density estimation is an important technique to estimate the multivariate density function. In this investigation we will use Hellinger Distance as a measure of error to evaluate the estimator, we will derive the mean weighted Hellinger distance for the estimator, and we obtain the optimal bandwidth based on Hellinger distance. Also, we propose and study a new technique to select the matrix of bandwidths based on Hellinger distance, and compare the new technique with the plug-in and the least squares techniques.
Multi person decision making – A compromise solution
Authors: Garisch Isabelle
Published: October 2022

In this paper a group of l decision makers who are confronted by the problem of choosing a mutually acceptable solution to a statistical decision problem, is considered. If consensus is not reached, a solution through compromise is called for. A measure of similarity or agreement between each pair of decision makers is defined, where this measure can be used to assign weights to the decision makers. These weights give an indication of the importance of the decision makers in terms of relative agreement with others in the group. A solution through compromise can be found by using these weights in the calculation of a randomised decision.
Challenges and Development Prospects of NIS.2 within the Framework of the Sixth Technological Order
Authors:   Moscow State Institute of International Relations (University) of the Ministry of Foreign Affairs of Russia, Tebekin A.V. , Mitropolskaya-Rodionova N.V. ,   MGIMO of the Ministry of Foreign Affairs of Russia, Khoreva A.V. ,   MGIMO of the Ministry of Foreign Affairs of Russia
Published: October 2022

The paper analyzes the process of the natural transition of the world economy from the fifth technological paradigm to the sixth one in the 2020s. It is shown that, by analogy with the periods of transition from the fourth technological paradigm to the fifth one in the 1970s, and from the third technological paradigm to the fourth one in the 1920s, the expected decline in economic activity, which has already manifested itself in the global economic crisis of the 2020s-2021s, is observed in the 2020s. It is noted that the traditional decline in economic activity in the extractive and processing industries, which takes place in the transition phase, is currently aggravated by the imminent global financial crisis, which is a consequence of a large-scale separation of the global money supply from the global commodity supply. And the resolution of this crisis is a matter of the near future (the next few years). It has been found that it is a huge surplus of unsecured financial resources (a global financial “bubble”) that makes a significant contribution to the slowdown of the processes of accelerating industrial technological development in the sixth technological paradigm by refocusing investors’ attention on speculative operations with cryptocurrencies and intangible assets, where the baton of the dot-com bubble has now been picked up by the set of information technologies under the banner of Industry 4.0, which was widely publicized, but never demonstrated its revolutionary economic efficiency. It has been shown that despite the fact that advanced global industrial technologies are a priority target for Western sanctions, the Russian economy continues to focus on the extractive industries developed in the framework of previous technological paradigms, the dominance of which in the national economy actually guarantees the technological backwardness of the country. Conditions have been formulated under which the prospects for the development of NIS.2 within the framework of the sixth technological paradigm in the Russian economy will be high.
The Effects of Pressure and Temperature on Flame Characteristics of Crude Palm Oil Combustion
Authors: Nilnet Jankaew  , Mohd Faizal Mohideen Batcha  , Arkom Palamanit  , Maizirwan Mel  , Makatar Wae-hayee
Published: October 2022

Using vegetable oil as a direct combustion fuel is an interesting energy development of lower emissions fuel. In this work, commercial cooking oil extracted from palm oil was burned using a typical nozzle having a diameter of 2 mm. Nozzle gage pressure and preheat temperature of palm oil were varied at 20, 40, 60 psi and 70, 90, 110 oC, respectively. Combustion oxidizer was air at room temperature. Equivalence ratio of ER= 1.1. To initiate combustion of the oil, a pilot flame from LPG with fixed firing rate was placed under the oil spray using a domestic stove. The experimental results shown that higher preheat temperatures and pressure accelerated combustion reactions of palm oil. The simulation also shown the same result as the experimental results. The higher preheat temperature and pressure led to high temperature, large size and long penetration of flame. The largest flame size was at 110 oC and 60 psi.
Effects of Thermal Diffusion and Diffusion Thermo on a Chemically Reacting MHD Peristaltic Transport of Bingham Plastic Nanofluid
Authors: Alaa Jaber Abuiyada  , Nabil Tawfik Eldabe  , Mohamed Yahya Abou-zeid  , Sami Mohamed El Shaboury
Published: October 2022

In this work we investigated the solution of the peristaltic motion of Bingham plastic nanofluid through a vertical symmetric channel. The system is stressed by an external strong magnetic field to produce a hall currents. Moreover, we involved effects of Joule heating, radiation, chemical reaction and couple stresses. Further, we considered Soret and Dufour effects. This phenomenon is represented mathematically by a system of non-linear equations which describe the problem. We used the approximation of low Reynolds number and long-wavelength approximation to simplify the governing equations. Then, we used Homotopy perturbation method (HPM) to solve the equations. We sketched a graph for the influence of various parameters on velocity, temperature and nanoparticles concentration profiles and then discussed them physically. Finding revealed that an increase of Bingham number and the regularization parameter of Bingham fluid decreases the velocity and increases the temperature, but radiation parameter has an opposite relative to them. Also, we found that increasing of chemical reaction parameter reduces the nanoparticles concentration, whereas the reverse is the case when the reaction order is increased.
Low GWP Refrigerant R1234yf, R1234ze(z), R13I1 as an Alternative to New Zeotropic Refrigerant
Authors: Piyanut Saengsikhiao  , Chayapat Prapaipornlert
Published: October 2022

This study will present R13I1 or trifluoroiodomethane as a CFCs refrigerant, the chemical formula is CF3I. R13I1 is a halocarbon agent used in fire extinguishing agents same as R227ea. R13I1 has a GWP of 1, a boiling point of -21.9, a critical temperature of 123.3 °C and a critical pressure of 3950kPa. It can be seen that it is a refrigerant with properties similar to R134a. R1234yf and R1234ze(z) therefore can be mixed with HFCs. The result the national institute of standards and technology (NIST) reference fluid thermodynamic and transport properties database (REFPROP) software and NIST vapor compression cycle model accounting for refrigerant thermodynamic and transport properties (CYCLE_D-HX) software as CAN/ANSI/AHRI540 standards of the Air-Conditioning, Heating, and Refrigeration Institute (AHRI) show that R13I1 has cooling coefficient of performance of 1.49, 2.43 and 2.79 kJ/kg which are lower than of R13I1 10.33% 8.13% and 9.40% for LT, MT and HT conditions as a result of low evaporator pressure, condenser pressure and refrigerant work .R13I1 which is a refrigerant that is mixed in low-GWP and low-GWP HFCs, as well as providing good energy efficiency zeotropic blends.
POSSIBLE IMPACTS OF COVID-19 PANDEMIC ON DOMESTIC WASTEWATER CHARACTERISTICS IN KUWAIT
Authors: Ahmed Mohd Elmuntasir , Al-Haddad Adel , Bualbanat Ali
Published: October 2022

The wastewater quality alterations due to the use of cleaning agents, sanitisers, and disinfectants, in addition to the accompanying use of water during COVID-19 have potential impacts on wastewater treatment operations. How the characteristics of wastewater could be altered by the COVID-19 pandemic was the concern of this investigation. Daily records of the Ardiya catchment in Kuwait City were examined for the period 2015–2020. Perhaps due to the excessive use of water during 2020 (446 compared to the five-year average of 436 l/c.d) and the corresponding wastewater generation increase (253 compared to the five-year average of 239 l/c.d), the effect of chemical usage on the wastewater quality has dampened. Nonetheless, an increase in the frequency of COD/BOD ratio > 3, TP in the range 6.5 to 8.5, TKN in the range 40 to 50 were observed in 2020, which was not observed during 2015–2019. These COVID-19 related alterations are important to take into consideration in wastewater treatment operations to achieve wastewater treatment targets.
Utilizing a Global Network of Telescopes to Update the Ephemeris for the Highly Eccentric Planet HD 80606 b and to Ensure the Efficient Scheduling of JWST
Authors: Pearson Kyle A. , Beichman Charles , Fulton B. J. , Esposito Thomas M. , Zellem Robert T. , Ciardi David R. , Rolfness Jonah , Engelke John , Fatahi Tamim , Zimmerman-Brachman Rachel , Avsar Arin , Bhalerao Varun , Boyce Pat , Bretton Marc , Burnett Alexandra D. , Burt Jennifer , Cynamon Charles H. , Fowler Martin , Gallego Daniel , Gomez Edward , Guillet Bruno , Hilburn Jerry , Jongen Yves , Kataria Tiffany , Kokori Anastasia , Kumar Harsh , Kuossari Petri , Lekkas Georgios , Marchini Alessandro , Meneghelli Nicola , Ngeow Chow-Choong , Primm Michael , Samantaray Subham , Shimizu 清水 Masao 正雄 , Silvis George , Sienkiewicz Frank , Swain Vishwajeet , Tan Joshua , Tock Kalée , Wagner Kevin , Wünsche Anaël
Published: October 2022

The transiting planet HD 80606 b undergoes a 1000 fold increase in insolation during its 111 days orbit due to it being highly eccentric (e = 0.93). The planet’s effective temperature increases from 400 to over 1400 K in a few hours as it makes a rapid passage to within 0.03 au of its host star during periapsis. Spectroscopic observations during the eclipse (which is conveniently oriented a few hours before periapsis) of HD 80606 b with the James Webb Space Telescope (JWST) are poised to exploit this highly variable environment to study a wide variety of atmospheric properties, including composition, chemical and dynamical timescales, and large scale atmospheric motions. Critical to planning and interpreting these observations is an accurate knowledge of the planet’s orbit. We report on observations of two full-transit events: 2020 February 7 as observed by the TESS spacecraft and 2021 December 7–8 as observed with a worldwide network of small telescopes. We also report new radial velocity observations which, when analyzed with a coupled model to the transits, greatly improves the planet’s orbital ephemeris. Our new orbit solution reduces the uncertainty in the transit and eclipse timing of the JWST era from tens of minutes to a few minutes. When combined with the planned JWST observations, this new precision may be adequate to look for non-Keplerian effects in the orbit of HD 80606 b.
Extremely Inclined Orbit of the S-type Planet γ Cep Ab Induced by the Eccentric Kozai–Lidov Mechanism
Authors: Huang Xiumin , Ji Jianghui
Published: October 2022

γ Cep Ab is a typical S-type planet, which occupies a nearly perpendicular planetary orbit relative to the binary. Here, we use a Markov Chain Monte Carlo sampler to conduct a full N-body fitting and derive self-consistent orbital solutions for this hierarchical system. We then employ the eccentric Kozai–Lidov (EKL) mechanism to explain the extremely inclined orbit of the S-type planet γ Cep Ab. The EKL mechanism plays an essential part in our exploration of the significant oscillations of the mutual inclination i
mut between the planet and the secondary star. We perform a qualitative analysis and use extensive numerical integrations to investigate the flip conditions and timescales of γ Cep Ab’s orbit. When the planetary mass is 15 M
Jup, the planet can reach i
mut ∼ 113° given the critical initial conditions of i
mut < 60° and e
1 < 0.7. The timescale for the first orbital flip decreases with the increase of the perturbation Hamiltonian. The flipping orbits of γ Cep Ab are confirmed to have a large possibility of remaining stable, based on surfaces of section and the secular stability criterion. Furthermore, we extend the application of EKL to general S-type planetary systems with a
1/a
2 ≤ 0.1, where the most intense excitation of i
mut occurs when a
1/a
2 = 0.1 and e
2 ∼ 0.8, and the variation in planetary mass mainly affects the flip possibility where e
1 ≤ 0.3.
Energy Transport during 3D Small-scale Reconnection Driven by Anisotropic Plasma Turbulence
Authors: Agudelo Rueda Jeffersson A. , Verscharen Daniel , Wicks Robert T. , Owen Christopher J. , Nicolaou Georgios , Germaschewski Kai , Walsh Andrew P. , Zouganelis Ioannis , Domínguez Santiago Vargas
Published: October 2022

Energy dissipation in collisionless plasmas is a long-standing fundamental physics problem. Although it is well known that magnetic reconnection and turbulence are coupled and transport energy from system-size scales to subproton scales, the details of the energy distribution and energy dissipation channels remain poorly understood. Especially, the energy transfer and transport associated with 3D small-scale reconnection that occurs as a consequence of a turbulent cascade is unknown. We use an explicit fully kinetic particle-in-cell code to simulate 3D small-scale magnetic reconnection events forming in anisotropic and decaying Alfvénic turbulence. We identify a highly dynamic and asymmetric reconnection event that involves two reconnecting flux ropes. We use a two-fluid approach based on the Boltzmann equation to study the spatial energy transfer associated with the reconnection event and compare the power density terms in the two-fluid energy equations with standard energy-based damping, heating, and dissipation proxies. Our findings suggest that the electron bulk flow transports thermal energy density more efficiently than kinetic energy density. Moreover, in our turbulent reconnection event, the energy density transfer is dominated by plasma compression. This is consistent with turbulent current sheets and turbulent reconnection events, but not with laminar reconnection.
Magnetic Switchbacks Heat the Solar Corona
Authors: Akhavan-Tafti M. , Kasper J. , Huang J. , Thomas L.
Published: October 2022

Magnetic switchbacks are short magnetic field reversals ubiquitously observed in the solar wind. The origin of switchbacks remains an important open science question, because of switchbacks’ possible role in the heating and acceleration of the solar wind. Here, we report observations of 501 robust switchbacks, using magnetic and plasma measurements from the first eight encounters by the Parker Solar Probe. More than 46% (6%) of switchbacks are rotational (tangential; TD) discontinuities (RD), defined as magnetic discontinuities with large (small) relative normal components of magnetic field and proton velocity. Magnetic reconnection in the solar atmosphere can be a source of the observed RD-type switchbacks. It is discovered that: (1) the RD-to-TD ratio exponentially decays with increasing heliocentric distance at rate 0.06 [R
S
−1], and (2) TD-type switchbacks contain 64% less magnetic energy than RD-type switchbacks, suggesting that RD-type switchbacks may relax into TD-type switchbacks. It is estimated that relaxing switchbacks generated via magnetic reconnection in the solar atmosphere can transfer an additional 16% of the total reconnected magnetic energy into heating and/or accelerating the solar corona, within 11.6 [R
S] of the reconnection site, below the critical Alfvén surface.
Hedyotis konhanungensis (Rubiaceae): A new species from the central highlands of Vietnam
Authors: Quang Bui Hong , Nguyen Khang , Le Tuan Anh , Linh Le Thi Mai , Nguyen Quoc Luan , Ngo Duy Hoang Vu , Wu Lei , Neupane Suman
Published: October 2022

Hedyotis konhanungensis B.H.Quang, T.A.Le, K.S.Nguyen & Neupane (Rubiaceae, Spermacoceae), a new species from Vietnam, is described and illustrated based on morphological and phylogenetic evidence. The new species is morphologically distinct from all southeastern Asian Hedyotis L. in its set of morphological traits such as the leaf type (shape and thickness), growth habit, and floral parts (color of inflorescence axis and the shape of calyx lobes). This species shows similarities with Hedyotis shenzhenensis, H. shiuyingiae and H. yangchunensis from China in habit, leaf blades, floral bracts, dichasial cymes, and fruits, but it is phylogenetically distinct and can be distinguished from them by the following combination of characteristics; cylindrical or subterete stem up to 15 cm tall, obovate to oval leaves spreading along the stem, broadly ovate or deltoid stipules with an entire margin and cuspidate apex, suborbicular or broadly oval lowest floral bracts, ovate or nearly oval calyx lobes, corolla tube 6–7 × 1–1.5 mm, stamens of the long-styled flowers inserted near base of corolla tube, and the short-styled flowers with stamens inserted near the throat of the corolla tube and filaments not exserted the throat.
Morphological description of Laevicaulis stuhlmanni (Simroth, 1895) (Pulmonata, Veronicellidae) from Egypt
Authors: Ali Reham , Robinson David , Liberto Fabio
Published: October 2022

Terrestrial slugs and snails are increasingly becoming serious pests of agricultural, horticultural and ornamental plants in Egypt, resulting in major economic losses.

This paper provides a detailed morphological and anatomical description of the veronicellid slug Laevicaulis stuhlmanni (Simroth, 1895) that has been recently recorded from Egypt. This population from Egypt is compared with Laevicaulis populations recently reported and described from Libya as L. striatus (Simroth, 1896) and with available data in literature. Some notes and a distribution map of the veronicellids introduced in north-eastern Africa are provided.
Note on the genus Nemania (Xylariaceae) – first records and a new species of the genus from Iran
Authors: Pourmoghaddam Mohammad Javad , Lambert Christopher , Voglmayr Hermann , Khodaparast Seyed Akbar , Krisai-Greilhuber Irmgard , Stadler Marc
Published: October 2022

In a survey of xylarialean fungi in northern Iran, some specimens attributable to the genus Nemania were collected, cultured and sequenced. Morphological evidence and phylogenetic analyses of a combined ITS, LSU, RPB2 and TUB2 gene dataset confirmed the presence of Nemania diffusa and N. serpens in Iran for the first time. Furthermore, the new species N. hyrcana, which shows similarities to N. subaenea and its putative synonym N. plumbea, but significantly differs from the latter in its DNA sequences, was encountered. All species are illustrated, described and discussed. In the phylogenetic analyses, for the first time, the overlooked ex-type ITS sequences of the neotype of the generic type, N. serpens and that of the holotype of N. prava, were added to a multi-gene matrix of Nemania. This revealed that the two accessions of N. serpens (HAST 235 and CBS 679.86), for which multigene data are available in GenBank, are misidentified, while the Iranian accession of N. serpens has an almost identical ITS sequence to the neotype, confirming its morphological species identification. The two previously accepted species of Euepixylon, E. udum and E. sphaeriostomum, are embedded within Nemania and are revealed as close relatives of N. serpens, supporting the inclusion of Euepixylon in Nemania.
La survie des fintechs : une analyse par les micro-fondations des capacités dynamiques
Authors: Moussavou Jean
Published: October 2022

Bien que les fintechs soient reconnues aujourd’hui comme la principale force motrice de l’innovation dans le secteur bancaire et financier, les défis de survie sont importants pour ces nouveaux entrants dont la vocation est de combiner les attributs des technologies digitales et de la finance. Comment les fintechs développent-elles des capacités pour s’adapter et se maintenir sur le marché ? L’article explore les modalités de survie des fintechs à travers les micro-fondations des capacités dynamiques (CDs). Une collecte de données primaires et secondaires est organisée en vue d’une triangulation. Les données sont analysées à travers la méthodologie de Gioia. Les résultats mettent en évidence cinq micro-fondations permettant aux fintechs d’assurer une compétitivité durable. L’article contribue à la littérature sur les micro-fondations des CDs et leurs implications opérationnelles. Il fournit également des indications sur les processus d’innovation à développer au sein des fintechs pour survivre. Codes JEL : M13, O32, O36
Peut-on parler de justice pour les Magdalen et leurs enfants ?
Authors: Sebbane Nathalie , Taïbi Nadia
Published: October 2022

L’Irlande est post-catholique et n’est pas complètement entrée dans l’ère de la sécularisation. Ce pays qui s’est battu pour se libérer du joug de l’oppresseur britannique s’est retrouvé au moment de l’indépendance en 1922 comme « recolonisé » par l’Église catholique. Il va subir une colonisation morale ; comme l’attestent singulièrement les Magdalen et leurs enfants.
État de nature : entre visions sensualiste et belliqueuse, la différence est-elle surtout affaire de confiance ?
Authors: Dumand Alexandre
Published: October 2022

L’état de nature sensualiste, porté par Hume et Smith, est un état de paix s’appuyant sur le caractère sympathique des individus. À l’inverse, l’état de nature théorisé par Hobbes est un état de guerre qui semble insister sur l’inclinaison des hommes à la cruauté et au désordre. Pour autant, nous pensons que l’absence de sympathie ne constitue pas une explication satisfaisante permettant de différencier ces deux visions. Au contraire, à partir d’exemples issus de fictions post-apocalyptiques, l’article montre que l’opposition entre états de nature sensualiste et hobbesien peut être expliquée par un certain contexte, de confiance ou de défiance, qui crée différentes normes de comportements et incite les individus à agir dans un sens selon une logique d’anticipations.
Use and repeatability of 3D light scanning to measure transverse dorsal profile size and symmetry in the thoracic region in horses
Authors: Tabor G.F. , Marlin D.J. , Williams J.M.
Published: October 2022

Equine epaxial muscle size, thoracolumbar profile and symmetry in horses is of clinical interest due to relationships with pain and pathology. Flexible-curve rulers have previously been used to gather reliable, objective measures of thoracic profile, however, 3D light-scanning offers a potential non-contact alternative method to estimate cross sectional area (CSA) of the region. 3D light-scans of the thoracic epaxial region were taken from ten endurance horses (7 geldings, 3 mares; 8±2 years). Total CSA of the combined epaxial musculature, using computer software, was calculated at scapula and T18 levels (depth: 15 cm). Intra and inter-rater (n=3) reliability of CSA measurements was assessed using Friedman’s analyses and post-hoc Wilcoxon rank tests (three repeated measures). Intraclass correlation estimates (ICC ± 95% confidence intervals (CI)) were calculated (mean-rating, absolute-agreement, 2-way mixedeffects model). Paired t-tests assessed differences between right and left areas. No significant differences existed for transverse plane-cuts (scapula, T18 P>0.05) between light-scans. Right and left areas were significantly different at the withers (P=0.012) with the left side larger in 70% of scans, but no significant differences were found between sides at T18. No differences existed for different plane-cuts of the same horse (P=0.53; ICC: 0.76; CIs: 0.43-0.92). While reliability was reduced between all raters (P=0.02; ICC: 0.70; CIs: 0.56-0.82), no significant differences occurred between two different assessors experienced in using the software (P=0.88; ICC: 0.90; CIs: 0.82-0.95). Intra-rater reliability for assessing thoracic profile and inter-rater reliability ICC values with experienced analysts was interpreted as good/excellent. The results suggest 3D light-scanning is an objective, non-invasive method to record size and symmetry of the epaxial region in horses and warrants validity testing against current measurement methods such as the flexible-curve ruler.
Insects are a delicacy: exploring consumer acceptance and market demand for edible insects in China
Authors: Su Y. , Chen J.L. , Zhao M. , Liao H.J. , Zhao M. , Du Y.Z. , Lu M.X.
Published: October 2022

The ancient Chinese have a long history of eating insects that which can be traced back over 2,000 years ago. Edible insects are often considered a healthier, more sustainable meat substitute and protein source, and their availability in the Chinese marketplace is steadily increasing. The primary purpose of this study was to explore the acceptance of edible insect products by Chinese consumers, and to investigate preferences for edible insects in terms of price, species and cooking methods. A total of 510 questionnaires were collected; 73.73% of the participants reported
having eaten insects and 26.27% had not. The results of the Spearman’s correlation coefficient showed that insect consumption was positively correlated with age, education and occupation and negatively correlated with gender and diet; furthermore, logistic regression indicated that the publicity of edible insects as food was a key factor affecting consumer acceptance. Popular edible insects for consumption included members of the Bombycidae, Acrididae and Apidae; furthermore, participants in different provinces varied in their consumption of insects and in the types of insects preferred. In conclusion, we advocate for the increased promotion of insects as food, especially the environmental friendliness of edible insects. For the comprehensive promotion of edible insects in China, we give priority to recommending the Bombycidae and Apidae insects that are preferred by most provinces. And now reasonably priced in the range of 50-100 yuan/kg was controlled to meet the needs of the market in China. In the future, deep-processed (smashed) insect products should be vigorously developed based on the large-scale farming technology of the main edible insects. Our results will provide the scientific data to help further the development of edible insects as food in China.
Preliminary project design for insect production: part 5 – models and simulation of insect production – organism development
Authors: Kok R.
Published: October 2022

The issue dealt with here is the rearing of an organism from egg to larva to pupa as is commonly done with various mealworms and black soldier flies, while organism development is the principal subject of interest. In order to obtain a uniform product at harvest time, the population should be synchronised as much as possible and this means that variability in development in the population must be reduced to the greatest possible extent. Four main sources of variability in development were identified, two of them operational and two biological in nature. These are: (1) distribution of the initial ages of the eggs; (2) distribution of incubation temperatures of the organisms; (3) inherent variability in the development rate of individual organisms; and (4) distribution in temperature sensitivity of the organisms. The combined effects of the various sources of variability on production and productivity were examined by means of simulation. This kind of exercise is useful in a number of contexts: (a) during the very early stage of project planning, as part of preliminary project design, before any formal design work is started and well before any major financial commitments are made; (b) during trouble-shooting of a low-performing process in order to upgrade its product quality; (c) to develop specifications for egg age distribution, design specifications for incubation equipment, etc.; (d) to better understand what data are required about the organism of interest so as to facilitate process design; and (e) to set objectives for organism breeding efforts. Examples are presented of how variabilities in the various factors can combine to yield organism development distributions at harvest time and how understanding the interactions between factors can help in designing a better production process.
Effect of Pelvic Sagittal Tilt and Axial Rotation on Functional Acetabular Orientation
Authors: Schwarz Julia , Yeroushalmi David , Hepinstall Matthew , Buckland Aaron J. , Schwarzkopf Ran , Meftah Morteza
Published: October 2022

Accurate and reproducible acetabular component positioning is among the most important technical factors affecting outcomes of total hip arthroplasty. Although several studies have investigated the influence of pelvic tilt and obliquity on functional acetabular anteversion, the effect of pelvic axial rotation has not yet been established. We analyzed a generic simulated pelvis created using preoperative full-body standing and sitting radiographs. A virtual acetabulum was placed in 144 different scenarios of acetabular anteversion and abduction angles. In each scenario, the effects of pelvic tilt and pelvic axial rotation on different combinations of acetabular orientations were assessed. The change in acetabular anteversion was 0.75° for each 1° of pelvic tilt and was most linear in abduction angles of 40°±45°. The change in acetabular anteversion was 0.8° for each 1° of pelvic axial rotation. Surgeons may consider adjusting acetabular anteversion in fixed axial pelvic deformities when the degree of deformity affects functional acetabular positioning, assessed from preoperative standing and sitting weight-bearing radiographs. [
Orthopedics
. 2023;46(1):e27–e30.]
Spatial Anatomy of the Radial Nerve in the Extended Deltopectoral Approach
Authors: Gipsman Aaron M. , Ihn Hansel E. , Iglesias Brenda C. , Azad Ali , Stone Michael A. , Omid Reza
Published: October 2022

The goal of this study was to define safe zones to prevent radial nerve injury in an extended deltopectoral approach. Relative distances of the upper margin (UMRN) and lower margin (LMRN) of the radial nerve to the proximal and distal borders of the pectoralis major and deltoid insertions were measured in 20 cadaveric arms. Four proximal humeral zones were identified (zone I, proximal border of the pectoralis major tendon to the proximal border of the deltoid tendon; zone II, proximal border of the deltoid tendon to the distal border of the pectoralis major tendon; zone III, distal border of the pectoralis major tendon to the distal border of the deltoid tendon; and zone IV, distal to the distal border of the deltoid tendon). On fluoroscopic measurement, mean distances between the UMRN and the proximal border of the pectoralis major tendon and the proximal border of the deltoid tendon were 71.6±2.1 mm and 26.2±2.5 mm, respectively. The incidence of the radial nerve in the spiral groove within each defined zone was as follows: zone I, 0%; zone II, 50%; zones III and IV, 100%. There was a significant association between anatomic zone and radial nerve entry into the spiral groove, χ
2
(3, N=88)=64.53,
P
<.001. The proximal border of the pectoralis major tendon to the proximal border of the deltoid tendon (zone I) is a safe location to avoid injury to the radial nerve. We recommend placing cerclage wires proximal to zone I from lateral to medial to avoid entrapment of the radial nerve. [
Orthopedics
. 2023;46(1):e31–e37.]
‘Blood, Soil, and Salad’: Ford Madox Ford and the Far Right
Authors: Davies Laurence
Published: October 2022

In this article, Ford Madox Ford’s writings about Provençal culinary practices are considered in the perspective of the nationalist ideas, which had become popular in France at the turn of the 20th century. A comparison between Ford and French writers such as Maurice Barrès and Charles Maurras leads to the emergence of different conceptions of the land and helps understand the former’s attachment to Provence, as well as his humanity and his generosity. This article also discusses right-wing attitudes to the land in Great Britain during the Twenties and Thirties.
Experiences of Adult Learners Engaged in Online Learning During the COVID-19 Pandemic in Ghana
Authors: Biney Isaac Kofi
Published: October 2022

Adult learners' engagement in distance education is increasing in Ghana. Following the COVID-19 pandemic, the University of Ghana transitioned to online facilitation and learning. This qualitative case study explores the transition to online learning at the Accra Learning Centre, which hosts over 80% of the University of Ghana's distance education students. In-depth interviews were conducted for eight students on the potential strengths, challenges, and coping strategies for learning online. It emerged that online learning helps build the digital skills that help adults become self-directed learners. Among challenges, participants observed network and internet connectivity problems. Adult learners were unprepared, but there was no other way to drive lifelong learning endeavours, so they adjusted to online learning through group learning and practice to build their digital literacy skills. The paper recommends that training programmes on change and time management are organised for adult learners who lack those skills and high-speed internet installed at the learning centres.
A Novel Decentralized Group Key Management Scheme for Cloud-Based Vehicular IoT Networks
Authors: Kumar Rakesh , Singh Sunil K. , Lobiyal D. K. , Chui Kwok Tai , Santaniello Domenico , Rafsanjani Marjan Kuchaki
Published: October 2022

The vehicular internet of things (VIoT) network is connecting smart commuters to elevate traffic problems and effectiveness that help to improve driving conditions for vehicles. Every ITS-based vehicle OBU and commuter might be interchangeable and used to give access permission for the various services during transportation such as infotainment, emergency service, environment service, road condition, etc. These services are suffering from the 1-affect-n problem, scalability, memory resources, computation, and communication overhead. In this paper, the authors proposed a novel decentralized group key management protocol for cloud-based vehicular IoT networks (GVIoTNet) to solve the problem of 1-affect-n and scalability by using the decentralized approach of group key access, key generation, key distribution, key update among vehicles and commuters. Further, by using the master key encryption approach, the average rekeying minimization is 84.84% with the GroupIT scheme. The minimization of rekeying reduces storage overhead and improves computation as well as communication overhead.
ESL Learners' Processes and Perceptions of Using Google Docs in Collaborative Academic Writing
Authors: Zainal Azlin Zaiti , Fan Ma Fei
Published: October 2022

This study aims to investigate the processes of learners' collaborative writing using Google Docs and their perceptions of the collaborative process. Twenty-four undergraduate ESL learners undertaking an academic writing course participated in this study. They were tasked with a paired writing assignment as part of the coursework. Google Docs was used by each pair in revising their drafts before they submitted the final version of their academic essay. Adopting a mixed-methods approach, the qualitative phase involved conducting a textual analysis based on the drafts that the students prepared. The categories used to analyse the revisions were adapted from Kessler et al.'s (2012) analytical categories to understand the focus of learners' revisions. Students' responses to an online survey administered at the end of the course formed the quantitative data. The findings provide insights into the processes of collaborative online writing and students' perceived usefulness of Google Docs as a tool for collaboration.