bluuebunny/crossref_metadata_2025 huggingface dataset:
Penggunaan Tepung Tapioka Sebagai Pengganti Bentonit Pada Lumpur Pemboran Berbahan Dasar Air
Authors: Aji Kusworo Zulfikar , Silviana S , Triadi Putranto Thomas
Published: October 2023

Fluida pemboran merupakan salah satu aspek yang berperan penting dalam keberhasilan dari operasi pemboran. Lumpur pemboran secara umum berfungsi antara lain sebagai pengangkat serbuk pemboran, menjaga serbuk pemboran tidak jatuh dan menumpuk saat sirkulasi berhenti, menjaga lubang bor dari intrusi fluida formasi, mengurangi friksi dan menjaga lubang bor dari keruntuhan. Sifat-sifat fisik dari lumpur pemboran antara lain adalah densitas, viskositas, gel strength, yield point, dan fluid loss. Bentonit merupakan salah satu material yang lazim dipakai sebagai campuran pada lumpur pemboran, akan tetapi sebagai bahan tambang, tentu saja penambangan bentonit sedikit banyak dapat mempengaruhi kondisi lingkungan yang ada. Tepung tapioka yang mengandung pati, memiliki kemampuan yang relatif sama dengan bentonit ketika diaplikasikan sebagai material campuran lumpur pemboran karena berfungsi sebagai viscosifier dan pencegah fluid loss. Diperlukan suatu analisis untuk mengenai kemampuan tepung tapioka sebagai substitusi bentonit berdasarkan parameter reologi lumpur pemboran. Dari hasil yang didapatkan, jika dibandingkan dengan rekomendasi spesifikasi dari API, lumpur pemboran berbahan dasar tepung tapioka dapat digunakan sebagai substitusi bentonit. Kata kunci: fluida pemboran, lumpur pemboran, densitas, viskositas, gel strength, yield point, fluid loss, bentonit, tepung tapioka, pati AbstractUtilization of Tapioca Starch as a Substitute for Bentonite in Water-Based Drilling Mud. Drilling fluid is one aspect that plays an important role in the success of the drilling operation. Drilling mud has functions as drilling cuttings transporter, keeping cuttings from falling and accumulate when circulation stops, protecting the borehole from formation fluid intrusion, reduce friction and prevents the borehole from collapse. The physical properties of the drilling mud include density, viscosity, gel strength, yield point, and fluid loss. Bentonite is one of the materials commonly used as a mixture in drilling mud, but as a mining material, can more or less affect environmental conditions. Tapioca flour which contains starch has relatively the same ability as bentonite when applied as a drilling mud, functioned as a viscosifier and prevents fluid loss. An analysis is needed to determine the ability of tapioca flour as a substitute for bentonite based on rheological parameters. From the results obtained, if compared to API recommended specification, drilling mud made from tapioca starch can be used as a substitute for bentonite. Keywords: drilling fluid, drilling mud, density, viscosity, gel strength, yield point, fluid loss, bentonite, tapioca flour, starch
Analisis Manajemen Waktu Pada Proyek Pembangunan Jalan Parang Garuda East Kawasan Industri Kendal
Authors: Ayatullah Mumtaz Almukaffa , Syafrudin S , Sarmingsih Anik
Published: October 2023

Petunjuk ini Proyek konstruksi infrastruktur merupakan rangkaian kegiatan pembangunan yang saling bergantung satu sama lain. Semakin besar suatu proyek infrastuktur, menyebabkan semakin banyak pula masalah yang harus dihadapi mulai dari proses perencanaan sampai dengan pelaksanaan pembangunan. Beberapa permasalahan yang sering dijumpai dalam sebuah proyek infrastuktur diantaranya berupa pengaturan sumber daya seperti tenaga kerja, biaya, waktu, peralatan, dan lain sebagainya. Jika hal tersebut tidak ditangani dengan benar maka akan mengakibatkan keterlambatan penyelesaian proyek, penyimpangan mutu, pembiayaan yang membengkak, pemborosan sumber daya dan lain sebagainya sehingga sangat merugikan saat pelaksanaan proyek tersebut. Oleh karena itu, maka diperlukan seorang insinyur yang mampu menguasai manajemen waktu dan menerapkannya dalam proyek infrastruktur agar dapat meningkatkan efisiensi dan efektivitas pengelolaan proyek sehingga mencapai hasil yang maksimal dari sumber daya yang tersedia. Dengan manajemen waktu yang baik, maka risiko keterlambatan sebuah proyek dapat diminimalisir. Meminimalisir risiko keterlambatan tersebut secara langsung dapat mengurangi risiko pembengkakan biaya proyek serta pada akhirnya akan memberikan keuntungan tersendiri bagi para stakeholder dan tentunya kepada tenant kawasan industri yang menggunakan infrastuktur jalan yang dibangun sehingga bisa segera merasakan manfaatnya setelah proyek tersebut selesai tepat waktu. Kata kunci: proyek infrastruktur, insinyur, manajemen waktu proyek, efektifitas, efisiensi
Quasi-projectivity of images of mixed period maps
Authors: Bakker Benjamin , Brunebarbe Yohan , Tsimerman Jacob
Published: October 2023

We prove a mixed version of a conjecture of Griffiths: that the closure of the image of any admissible mixed period map is quasi-projective, with a natural ample bundle. Specifically, we consider the map from the image of the mixed period map to the image of the period map of the associated graded. On the one hand, we show in a precise manner that the parts of this map parametrizing extension data of non-adjacent-weight pure Hodge structures are quasi-affine. On the other hand, extensions of adjacent-weight pure polarized Hodge structures are parametrized by a compact complex torus (the intermediate Jacobian) equipped with a natural theta bundle which is ample in Griffiths transverse directions. Our proof makes heavy use of o-minimality, and recent work with B. Klingler associating anℝan,exp{\mathbb{R}_{\mathrm{an},\exp}}-definable structure to mixed period domains and admissible mixed period maps.
Rehabilitation of reinforced concrete deep beams by near-surface-mounted steel reinforcement
Authors: Attiya Muhammad Abed , Uraiyer Faris Abaas , Zainul-Abideen Ahmed Yousif Abbas
Published: October 2023

This article describes an experimental investigation of the behavior of reinforced concrete deep beams repaired by near-surface-mounted (NSM) steel bars. The first beam was loaded under a two-point load up to failure, and the other six deep beams were loaded to 0.4 and 0.75 of ultimate load. Then, they were repaired by NSM steel bars. The bar orientation and angle were the main variables in these beams. The primary goal of this study is to determine whether it is possible to restore the reinforced concrete deep beam with shear reinforcement to its full load-carrying capacity by NSM steel bars as the method of repair. All deep beams were tested with a shear span-depth ratio of 0.8. The test findings showed that the NSM steel repair bars were very effective in restoring the loaded deep beams’ full capacity. Moreover, NSM steel bars enhanced the original deep beams’ strength capacity from 4.16 to 19.44%. The ultimate load, mechanisms of failure, load–crack width distribution, and load–deflection profile are tracked as results.
Congruence subgroups and crystallographic quotients of small Coxeter groups
Authors: Kumar Pravin , Naik Tushar Kanta , Singh Mahender
Published: October 2023

Small Coxeter groups are precisely the ones for which the Tits representation is integral, which makes the study of their congruence subgroups relevant. The symmetric group

S
n

{S_{n}}

has three natural extensions, namely the braid group

B
n

{B_{n}}

, the twin group

T
n

{T_{n}}

and the triplet group

L
n

{L_{n}}

. The latter two groups are small Coxeter groups, and play the role of braid groups under the Alexander–Markov correspondence for appropriate knot theories, with their pure subgroups admitting suitable hyperplane arrangements as Eilenberg-MacLane spaces. In this paper, we prove that the congruence subgroup property fails for infinite small Coxeter groups which are not virtually abelian. As an application, we deduce that the congruence subgroup property fails for both

T
n

{T_{n}}

and

L
n

{L_{n}}

when

n
≥
4

{n\geq 4}

. We also determine subquotients of principal congruence subgroups of

T
n

{T_{n}}

, and identify the pure twin group

P
⁢

T
n

{PT_{n}}

and the pure triplet group

P
⁢

L
n

{PL_{n}}

with suitable principal congruence subgroups. Further, we investigate crystallographic quotients of these two families of small Coxeter groups, and prove that

T
n

/
P

⁢

T
n
′

{T_{n}/PT_{n}^{\prime}}

,

T
n

/

T
n
′′

{T_{n}/T_{n}^{\prime\prime}}

and

L
n

/
P

⁢

L
n
′

{L_{n}/PL_{n}^{\prime}}

are crystallographic groups. We also determine crystallographic dimensions of these groups and identify the holonomy representation of

T
n

/

T
n
′′

{T_{n}/T_{n}^{\prime\prime}}

.
Simple 𝔰𝔩
d+1-modules from Witt algebra modules
Authors: Guo Xiangqian , Liu Xuewen , Zhang Fenghua
Published: October 2023

Let

d
≥
1

{d\geq 1}

be an integer and let

𝒲
d

{\mathcal{W}_{d}}

be the Witt algebra.
For any admissible

𝒲
d

{\mathcal{W}_{d}}

-module P and any

𝔤
⁢

𝔩
d

{\mathfrak{gl}_{d}}

-module V,
one can form a

𝒲
d

{\mathcal{W}_{d}}

-module

ℱ
⁢

(
P
,
V
)

{\mathcal{F}(P,V)}

, which as a vector space is

P
⊗
V

{P\otimes V}

.
Since

𝒲
d

{\mathcal{W}_{d}}

has a natural subalgebra isomorphic to

𝔰
⁢

𝔩

d
+
1

{\mathfrak{sl}_{d+1}}

, we can view

ℱ
⁢

(
P
,
V
)

{\mathcal{F}(P,V)}

as
an

𝔰
⁢

𝔩

d
+
1

{\mathfrak{sl}_{d+1}}

-module. Taking

P
=

Ω
⁢

(
𝝀
)

{P=\Omega(\boldsymbol{\lambda})}

, the rank-1

U
⁢

(
𝔥
)

{U(\mathfrak{h})}

-free

𝒲
d

{\mathcal{W}_{d}}

-module, and

V
=

V
⁢

(
𝐚
,
b
)

{V=V({\mathbf{a}},b)}

, the simple cuspidal module over

𝔤
⁢

𝔩
d

{\mathfrak{gl}_{d}}

, we get
the special

𝔰
⁢

𝔩

d
+
1

{\mathfrak{sl}_{d+1}}

-modules

ℱ
⁢

(
𝝀
;
𝐚
,
b
)

=

ℱ
⁢

(

Ω
⁢

(
𝝀
)

,

V
⁢

(
𝐚
,
b
)

)

\mathcal{F}(\boldsymbol{\lambda};{\mathbf{a}},b)=\mathcal{F}(\Omega(%
\boldsymbol{\lambda}),V({\mathbf{a}},b))

which are

U
⁢

(
𝔥
)

{U(\mathfrak{h})}

-free modules of infinite rank.
We determine the necessary and sufficient condition for the

𝔰
⁢

𝔩

d
+
1

{\mathfrak{sl}_{d+1}}

-module

ℱ
⁢

(
𝝀
;
𝐚
,
b
)

{\mathcal{F}(\boldsymbol{\lambda};{\mathbf{a}},b)}

to be simple, and for the non-simple case we construct their proper submodules explicitly.
At last, using the above results, we deduce an explicit simplicity criterion for the generalized Verma modules induced from

V
⁢

(
𝐚
,
b
)

{V({\mathbf{a}},b)}

and obtain a family of simple affine modules from

ℱ
⁢

(
𝝀
;
𝐚
,
b
)

{\mathcal{F}(\boldsymbol{\lambda};{\mathbf{a}},b)}

, which can be viewed as
the non-weight version of loop modules.
The smallest Mealy automaton generating an indicable regular branch group
Authors: Woryna Adam
Published: October 2023

We construct a two-state Mealy automaton A over the three-letter alphabet generating a regular branch group

G
⁢

(
A
)

{G(A)}

, which surjects onto the infinite cyclic group. Some algebraic and geometric properties of the group

G
⁢

(
A
)

{G(A)}

are derived. In particular, this group has a nearly finitary subgroup of index two, is amenable, just non-solvable, has exponential growth, and its action on the corresponding regular rooted tree is self-replicating, contracting, but it does not have the congruence subgroup property. We also derive in detail an ascending finite L-presentation for the group

G
⁢

(
A
)

{G(A)}

.
Comparison of several numerical solvers for a discretized nonlinear diffusion model with source terms
Authors: Neta Beny
Published: October 2023

The numerical solution of the nonlinear system of equations resulting from a real engineering problem is discussed. We use the approximate solution of a system of two nonlinear integrodifferential equations to build the nonlinear system of equations. This system can be solved by Newton’s method if the solution is differentiable, or using some derivative-free methods, such as Steffensen’s method. Here we show that Steffensen’s method does not always converge and secant method requires more iterations than Traub’s method and Newton’s method. We recommend Traub’s method in case the solution is not differentiable.
On the uniqueness theorems for transmission problems related to models of elasticity, diffusion and electrocardiography
Authors: Shlapunov Alexander , Shefer Yulia
Published: October 2023

We consider a generalization of the inverse problem of the electrocardiography in the framework of the theory of elliptic and parabolic differential operators.
More precisely, starting with the standard bidomain mathematical model related to the problem of
the reconstruction of the transmembrane potential in the myocardium from known
body surface potentials, we formulate a more general transmission problem for elliptic and
parabolic equations in the Sobolev type spaces and describe conditions, providing
uniqueness theorems for its solutions. Next, the new transmission
problem is interpreted in the framework of the elasticity theory applied to composite
media. Finally, we prove a uniqueness theorem for an evolutionary
transmission problem that can be easily adopted to many models involving the diffusion type equations.
TOURISM LAW REFORM: EXPERIENCES OF CENTRAL ASIAN COUNTRIES
Authors: Munkhuu Bilegsaikhan , Sukhragchaa Amarjargal , Regzendorj Nomindari , Batbold Khaliun
Published: October 2023

The awareness of each country's tourism governance, economic capacity, development features and intensity, market sensitivity and relations simultaneously plays an important role in future economic relation. The concepts, structure and regulation of tourism laws across five counties in the Central Asian Counties (CAC) are different, however, some key legal concepts can be found in the documents: 1) legal relations within the sector; 2) economic policy of the sector; 3) social relations of the sector. The laws focus on improving quality and accountability of tourism services, and in particular, the regulation of compliance and noncompliance of the service contracts. This paper compares and discusses policies, regulations, terminology and structure of tourism laws of five countries in the CAC to find and elaborate similarities and differences across these documents.
SOME ISSUES OF INCREASING TRADE BETWEEN MONGOLIA AND THE REPUBLIC OF KOREA
Authors: Otgonsaikhan Nyamdaa , Batbold Laashuu
Published: October 2023

In the Northeast Asian region, Mongolia and the Republic of Korea have had long-standing friendly political and economic relations. Since the establishment of diplomatic relations between Mongolia and Republic of Korea in 1990, relations have strengthened in a variety of areas, including politics, culture, education, economy and investment. For instance, Korea and Mongolia's bilateral trade rose significantly by 146 times from USD 2.7 million in 1990 to USD 395 million in 2011. In 2011, leaders of the two countries signed the “Comprehensive Partnership Agreement”, representing a new stage in bilateral cooperation. They set a goal to develop cooperation in several areas as a result of the agreement. However, there have been no substantial improvements in trade sector, in last years. According to the statistics, trade turnover peaked at USD 520 million in 2013, then steadily declined and reached to USD 257 million in 2020. In 2016, leaders of the two countries agreed to form a joint working group to study the possibility of concluding an economic partnership agreement between Mongolia and the Korea to expand trade and economic cooperation. In 2017, a feasibility study on the Mongolia-Korea EPA was launched, but no formal decision on the agreement has been made. The main aim of this research was to examine the current state of trade between the Mongolia and Korea and conduct analysis in order to find out opportunities to increase and sustain the trade between the two counties.
The certificate GIVEN BY MANCHU QING DYNASTY TO DÖRBÖD KHANS SONOMGOMBO AND MAGSARJAV’S WIVES
Authors: Enkhbayar Jigmeddorj
Published: October 2023

The Certificates (abdangga fungnehen) given to Dörböd khan Sonomgombo’s wife from Khötöch family and to Magsarjav’s eldest wife from Zalakhus family by Qing dynasty were considered in this article. The Certificate to noblemen’s wives were given by the Qing dynasty on the basis of nobleman’s titles, his wife’s origin and attitudes. The noblemen’s wives who received the Certificates by Qing government had positions higher than the wives of jasaγ who has no right to inherit his title and all other women belonging to the highest strata of society. Despite the Certificates and gifts by the Qing emperor a clerk was appointed for a special ritual when a governor’s and other noblemen’s titled wife died.
Pandemics in the history of Mongolia and Eurasia
Authors: Dorjpalam Oyuntsetseg , Tuvshintur Lagnai
Published: October 2023

Throughout humankind history, various plagues and epidemics spread annihilated millions of people and destroyed entire civilizations and whole tribes, as well. Historical sources show that many infectious diseases have occurred in Mongolia's history and caused great damage. In particular bubonic plague pandemic and smallpox. Despite the rapid development of science and technology and the rapid development of the health sector, various epidemics continue to pose a threat to humanity. Nowadays the world has been combating COVID-19 pandemic for the last 2 years, which started in Wuhan, Hubei Province, China. As of November 03, 2021, there were 235,435,786 registered cases totally. The pandemic is not only threatening the health and lives of the population, but also causes enormous damage to social and economic situations of the countries worldwide. The economic downturn due to Covid-19 is pushing millions of people into poverty. Countries all over the world are taking all possible measures to counter this, but so far they have not been able to contain the spread of the pandemic. The world economy is expected to revive in 2021; however, the full recovery is expected to take much longer time. Furthermore, the effects of pandemic are expected to be long-lasting. In this article, I want to compare the history of infectious diseases that have caused great harm to Mongolians and the current situation.
CULTURAL RELATIONS BETWEEN MONGOLIA AND CHINA ON THE EXAMPLE OF SONGS
Authors: Luvsanbaldan Odontuya , Buyandelger Munkhtuya
Published: October 2023

Despite its long history as neighbors, the history of Mongolian-Chinese cultural relations, which at one time ignored each other and at other times advanced and cooperated with each other, covers a wide range of issues. We live in a time when war and peace are being resolved positively on the basis of mutual understanding and agreement between nations, and trade, economic and cultural relations are expanding globalization. The article explores the traditional relationship between Mongolian and Chinese music will not only improve the history of cultural relations between the two countries, but also contributes to the study of both Mongolian and Chinese literature as well as Mongolian-Chinese translation. We assume that the tradition of Mongolian-Chinese art and culture relations will become clearer if scholars continue to study the relationship between Mongolian and Chinese folk songs in depth from a theoretical and historical point of view, enriching them with new facts and materials, reviving, developing and defining their future.
Sound complexity as a strategy for livable and sustainable cities: The case of an urban waterfront
Authors: Tsaligopoulos Aggelos , Kyvelou Stella Sofia , Karapostoli Aimilia , Bobolos Nicos , Tsintzou Theodora , Lekkas Demetris F. , Matsinos Yiannis G.
Published: October 2023

Public spaces underwent a notable shift in their acoustic profile during the societal restrictions resulting from the COVID-19 pandemic. A silver lining emerged from this global crisis, with noticeable improvements in public acoustic environments due to reduced noise levels resulting from restricted mobility. This research focuses on the acoustic environment of Thessaloniki’s waterfront, a Mediterranean metropolis in Northern Greece. Waterfronts of Mediterranean coastal cities provide unique acoustic environments worthy of protection from environmental noise. By analyzing sound level measurements and recordings during the 2021 lockdown and comparing them to the post-lockdown period in 2022, we aimed to explore environmental noise and acoustic complexity indicators. The study’s findings revealed a significant increase in acoustic complexity during the lockdown, underscoring an inverse relationship between noise levels and acoustic complexity. Urban waterfronts, like Thessaloniki’s, hold great potential for enhancing acoustic complexity and subsequently improving the acoustic quality of public spaces while protecting them from environmental noise. This research sheds light on the possible use of sound complexity as an environmental quality standard that can be incorporated in sustainable urban planning and design.
From the Atlantic to the Mediterranean and Back: Sardinia, Iberia, and the Transfer of Knowledge in Late Bronze Age Networks
Authors: Araque Gonzalez Ralph
Published: October 2023

Sardinia was a hub of sea routes in the Final Bronze Age, c. 1200–850 BC, connecting the Aegean and the Levant in the East with the Iberian Atlantic façade in the West at its latitudinal extremes. Although situated some 1,200 nautical miles apart, bronze working techniques on the island, specific decorations, and implement typologies were clearly related to those in western Iberia, which was a pivotal node connecting the Atlantic and Mediterranean worlds. Without doubt, individuals have travelled between and beyond both regions, and transported objects alongside technological as well as theoretical information. Although serious challenges accompanied the multi-directional intensification of interactions, the local communities had innovative responses to them, managing to integrate new people and knowledge. The general aim of this contribution is to provide a theoretical framework with which to analyse the motivations and social mechanisms for cooperation and communication that facilitated technology transfer in an environment of dispersed, socially heterogeneous communities. The exchanges and interactions within this decentralised network must have been self-organised by individuals and communities, and encompassed all forms of entanglement. Consequently, practises of self-governance, hospitality, conflict management, and inter-group communication as well as shared symbols are of central interest.
Development of a high-strength carrageenan fiber with a small amount of aluminum ions pre-crosslinked in spinning solution
Authors: Jia Liting , Han Xiao , Zhai Hongjie , Qiao Cuixia , Geng Cunzhen , Xue Zhixin , Xia Yanzhi
Published: October 2023

In this work, an improved wet spinning method was proposed to prepare high-tensile-strength carrageenan fibers by pre-crosslinking process. Pre-crosslinking was achieved by adding a small amount of Al3+ ions into the spinning solution. The properties of the carrageenan spinning solution were analyzed by polarizing microscope, dynamic light scattering, and viscosity, the results showed that the modified spinning solution pre-crosslinked with Al3+ ions was orderly and high-viscosity, and the average particle size of the spinning solution was increased. The properties of the carrageenan fibers were characterized using scanning electron microscope, Fourier transform infrared spectroscopy, X-ray diffraction spectroscopy, X-ray photoelectron spectroscopy, and tensile tests. The results showed that the new carrageenan fibers were formed by coordination and ionic bonds between Al3+, –OH and sulfate groups. The tensile strength was up to 1.77 cN/dtex of Al-3.0/CAF (the best of newly prepared carrageenan fiber in this work), which is the highest strength carrageenan fiber prepared at present. Compared with the traditional process, this method reduced the concentration of Al3+ ions in coagulation bath and stretch bath, thus saving the production cost and protecting the environment.
Shamanism at Early Neolithic Göbekli Tepe, southeastern Turkey. Methodological contributions to an archaeology of belief
Authors: Dietrich Oliver
Published: October 2023

The term shamanism is widely used in archaeology to describe early belief systems. Sometimes, this has taken the form of a one-size-fits-all-explanation, without a discussion of the concept or the cultural contexts it was applied to. Recently, the Early Neolithic (9600–7000 BCE) of southwestern Asia has become a focal point of this discussion. Sites like Nevalı Çori, Göbekli Tepe, Jerf el Ahmar, Körtik Tepe, Tell Abr’3, Tell Qaramel, Wadi Faynan 16, Karahantepe and Sayburç have produced rich evidence, mostly of an iconographical nature, that seems to offer direct insights into early belief systems. The current contribution uses one of the best researched sites, Göbekli Tepe, as a case study to develop criteria for the identification of shamanism in the archaeological record.
Trajectory fitting estimation for stochastic differential equations driven by fractional Brownian motion
Authors: Araya Hector , Barrera John
Published: October 2023

We consider the problem of drift parameter estimation in a stochastic differential equation
driven by fractional Brownian motion with Hurst parameter

H
∈

(

1
2

,
1
)

{H\in(\frac{1}{2},1)}

and small diffusion.
The technique that we used is the trajectory fitting method. Strong consistency and asymptotic distribution of the estimator
are established as a small diffusion coefficient goes to zero.
Study on properties of recycled mixed polyester/nylon/spandex modified by hydrogenated petroleum resin
Authors: Kuang Xinmou , Su Minru , Wang Liang , Li Hao , Shen Xiaolan , Yu Mengyun , Wu Yiran
Published: October 2023

In order to improve the utilization value of recycled materials, the study considers recycled materials such as polyester/nylon/spandex as raw materials. Using polyester/polyamide/spandex as raw materials, the recycled polyester/polyamide/spandex mixed materials were first pretreated to obtain the pretreated mixed materials. Then, the pretreated mixed materials were evenly mixed with hydrogenated petroleum resin. The composite materials were prepared through extrusion and injection molding. By comparing the mechanical properties, the effects of different hydrogenated petroleum resins and their additives on the tensile strength, bending strength, impact strength, elongation at break, and bending modulus of the composites were investigated. And the microstructure of the fracture surface was characterized by scanning electron microscopy. The results showed that: (a) when the addition amount of hydrogenated C5 petroleum resin was 4.5%, the maximum impact strength and fracture elongation were 18.03 kJ/m2 and 15.92%, respectively. (b) The maximum tensile strength, bending strength, and bending modulus could reach 22.9, 38.72, and 2217.9 MPa, when the addition amount of hydrogenated C9 petroleum resin was 4.5, 29.5, and 39.5%, respectively.
Survival outcomes for lung neuroendocrine tumors in California differ by sociodemographic factors
Authors: Mulvey Claire K , Paciorek Alan , Moon Farhana , Steiding Paige , Shih Brandon , Gubens Matthew A , Zhang Li , Bergsland Emily K , Cheng Iona
Published: October 2023

Lung neuroendocrine tumors (NETs) have few known predictors of survival. We investigated associations of sociodemographic, clinicopathologic, and treatment factors with overall survival (OS) and lung cancer-specific survival (LCSS) for incident lung NET cases (typical or atypical histology) in the California Cancer Registry (CCR) from 1992 to 2019. OS was estimated with the Kaplan–Meier method and compared by sociodemographic and disease factors univariately with the log-rank test. We used sequential Cox proportional hazards regression for multivariable OS analysis. LCSS was estimated using Fine-Gray competing risks regression. There were 6038 lung NET diagnoses (5569 typical, 469 atypical carcinoid); most were women (70%) and non-Hispanic White (73%). In our multivariable model, sociodemographic factors were independently associated with OS, with better survival for women (hazard ratio (HR) 0.62, 95% confidence interval (CI) 0.57–0.68, P < 0.001), married (HR 0.76, 95% CI 0.70–0.84, P < 0.001), and residents of high socioeconomic status (SES) neighborhoods (HRQ5vsQ1 0.73, 95% CI 0.62–0.85, P < 0.001). Compared to cases with private insurance, OS was worse for cases with Medicare (HR 1.24, 95% CI 1.10–1.40, P < 0.001) or Medicaid/other public insurance (HR 1.45, 95% CI 1.24–1.68, P < 0.001). In our univariate model, non-Hispanic Black Californians had worse OS than other racial/ethnic groups, but differences attenuated after adjusting for stage at diagnosis. In our LCSS models, we found similar associations between sex and marital status on survival, but no differences in outcomes by SES or insurance. By race/ethnicity, American Indian cases had worse LCSS. In summary, beyond disease-related and treatment variables, sociodemographic factors were independently associated with survival in lung NETs.
Modificaciones implementadas a los laboratorios de química debido a la pandemia por COVID-19 a nivel internacional y nacional, el caso de la Universidad Nacional y la Universidad de Costa Rica en 2020-2021 y sus aciertos o deficiencias
Authors: Corrales González Yorleni
Published: October 2023

This essay addresses the problems faced by chemistry laboratory teachers during the COVID-19 pandemic, the contingency measures used to continue virtual laboratory courses, such as online chemical simulators and the application of home laboratory practices, the recommendations made by experts, as well as some impressions of the student body regarding the measures implemented by their teachers. In addition, some measures taken by two state universities from Costa Rica to deal with this anomalous situation are discussed. Although the studies consulted agree that virtuality loses the essence of a laboratory course, as there is no possibility of handling equipment and instrumentation, it is considered that the use of virtual and technological tools is a good complement to support the learning of students and that their inclusion is important for the development of education in the chemistry laboratory.
Análisis guiado de sentencias mediante aprendizaje colaborativo: una estrategia para el desarrollo del razonamiento jurídico
Authors: Baltodano Mayorga Jose Daniel
Published: October 2023

This paper documents the results of implementing a guided analysis of judgments as a collaborative learning strategy in the Legal Reasoning II course at the University of Costa Rica, Liberia campus during the second semester of 2021. To develop a critical and contextualized perspective on the legal phenomenon, a qualitative assessment of this tactic was conducted in order to enhance learning about the elements for legal interpretation and argumentation through peer work. It is concluded that peer collaboration impacted the learning process positively. This strategy promotes a comprehensive approach, integrating theory, practice, and context for a significant construction of knowledge. In addition, it develops multiple abilities and attitudes related to the content being discussed as well as research skills and ongoing learning, among others. Thus, this strategy proved to be ideal to foster active and critical learning of legal reasoning.
Actitudes hacia la educación inclusiva en docentes y futuros docentes: una revisión de la literatura de tres instrumentos
Authors: Vega Gonzales Emilio Oswaldo , Rivera Arellano Edith Gissela
Published: October 2023

The way of measuring the attitudes towards inclusive education that teachers and future teachers have is not uniform since there are various instruments to carry out this procedure, within which 3 scales present the most appropriate psychometric properties: MATIES, SACIE-R and TAIS. The objective of the study is to synthesize and compare the findings of scientific publications worldwide in the last five years, regarding the attitudes of teachers and future teachers towards inclusive education, considering the aforementioned instruments. The research is framed within the qualitative approach with a narrative review design, which included 23 original articles from indexed journals published between January 2018 and July 2022, identified in the Google Scholar search engine. The results highlight the more frequent use of the SACIE-R, especially in Spain due to its lower number of items, while the MATIES is the one that best analyzes the cognitive, affective and behavioral dimensions of attitudes. In addition, differences were found between the attitudes according to the characteristics of the teachers, being more favorable in those who are dedicated exclusively to special education, those who have fewer years of experience and those who perceive they have been more trained in matters of educational inclusion. It is concluded that the MATIES, SACIE-R and TAIS are valid and useful tools to measure the attitudes of teachers regarding inclusive education.
Mujeres y formación en los siglos XVI y XVII: análisis textual comparativo en el marco de las Humanidades Digitales
Authors: Restrepo-Monsalve Jennifer
Published: October 2023

Durante el siglo XVI circularon en España algunos tratados morales cuyo propósito consistió en dictaminar los roles de mujeres y de hombres dentro del matrimonio. En el presente artículo indago en las posibilidades de análisis computacional asistido por la herramienta de minería de textos, en acceso abierto, Voyant Tools de un corpus textual conformado por la sección «Las casadas» del tratado de Juan Luis Vives Instrucción de la mujer cristiana (1524), publicado originalmente en latín y traducido cuatro años después por Juan Justiniano (1528); La perfecta casada de fray Luis de León (1583) y la sección sobre el matrimonio en Vida política de fray Juan de la Cerda (1599), contrastados con dos epístolas de sor Juana Inés de la Cruz, Carta atenagórica (1690) y Respuesta a sor Filotea de la Cruz (1700). La visualización de los datos permitió descubrir tendencias temáticas, patrones lingüísticos y rasgos distintivos de las voces masculinas y la voz femenina elegida.
Mental Health of Different Types of College Students
Authors: Kannan Mohana , Sheeba K.
Published: October 2023

Mental health is defined as a state of well-being in which an individual realizes his or her abilities, can cope with the normal stresses of life, can learn and work productively and can make a contribution to his or her community. As mental health of the students, is measured by life satisfaction, positive effect and depression which constitute the two way of viewing the mental health in the positive as well as negative. In this present study normative Survey method was adopted. Higher education students of Chennai District were used as a sample for the study. Data is collected from 822 college students of which Arts and Science college students is 147, Engineering college students is 196 and Education college students is 479 from different type of colleges are involved in this present study. Result of the present study is there is a significant difference between gender, locality, type of institution and types of colleges. The dimensions of mental health is well correlated with each other.
WINGED WORDS AND RELATED LANGUAGE UNITS
Authors: Ne’matovna Isakova Guzalkhon , Islamovna Sadikova Mukaddam , Ahmadjanovna Usmanova Khumora , Abdishukurovna Shomuradova Dilbar
Published: October 2023

Winged words have a special place in national and world culture; they represent the thoughts of famous philosophers, scientists, writers and statesmen in a polished form. Winged words are individual phrases that are used as a figurative expression in speech. They are widely used in the speech of peoples who speak different languages.   Winged words have entered the language as a whole and are used as an expressive description of social, domestic, and spiritual phenomena. They are phrases that clearly and figuratively convey deep thoughts in a concise form, briefly clarify the meaning of complex situations and characters, and move from language to language.  Winged words differ from other linguistic units in terms of stability, meaningfulness, specific formation, and active use, association with an event or occasion, re-perception in the mind, ownership of an author or source. The following article will discuss the difference between the existing winged words in the French language and such units as phraseological units, aphorisms, proverbs and sayings, maxims, sentences, adages, and quotations. The specific features of each unit are analyzed in detail, similarities and differences are explained with the help of examples, and concluding remarks are given.
Nonexistence of Kneser solution of neutral delay difference equation
Authors: KALEESWARI S. , GWORI J. , GWORI J.
Published: October 2023

By creating suitable standards for the nonexistence of so-called Kneser solutions, this study seeks to augment the third order neutral delay difference equations current oscillation results. The results of combining new and previous findings. All of the answers to the studied equations oscillate thanks to our work.
Examining the Relevance and Philosophical Significance of Some Northern Sotho Proverbs in the Context of COVID-19: A Sociocultural Perspective
Authors: Seanego James
Published: October 2023

Proverbs have long been serving as a tool for shaping human being’s life. They serve as a philosophical tool for social cohesion among other socio-cultural significances. Though some critics regard them as ancient, proverbs are still fulfilling the philosophical purpose(s) in the COVID-19 era. Their philosophical nature and meaning remains relevant in many contemporary life occurrences. Observing how people self-conduct themselves and share information about the pandemic, it was imperative for the study of this nature to be documented to ease communication among people during and post the pandemic.  It is against this backdrop that this paper aimed at contextualising the meaning(s) of some Northern Sotho proverbs in the COVID-19 epoch and examine how they are relevant to the pandemic’s situation and happenings. Qualitative research approach undergirded this study in the sense that the relevance of traditional Northern Sotho proverbs is tested against the global status quo (COVID-19 times). The study adopted Vygotsky’s (1978) Sociocultural theory as its lynchpin to enable a critical and thorough examination and assessment of the importance of language (through proverbs) in the COVID-19 context.  Relevant Northern Sotho proverbs were purposively selected due to their significant role in the COVID-19 epoch. The proverbs were synthesised and analysed thematically to reveal their relevance and philosophical purpose during and post the pandemic. The study ultimately argues that language, through proverbs as its fundamental aspects and ideological tools, remains a major philosophical source of communication among living folks.
Baltic Language Networking: A Personal View
Authors: Hogan-Brun Gabrielle
Published: October 2023

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Exploring the conceptual landscape of contrastive linguistics
Authors: Bayiha Auguste
Published: October 2023

Conferences on Contrastive Linguistics (CL) are being held around the world in order to find a consensus on various disciplinary points. This study intends to explore the conceptual landscape of contrastive Linguistics as a new discipline. Provided that disciplinary newness is always questioned from various perspectives, the explorative approach will be helpful for the description of the discipline’s conceptual landscape. Findings suggest that its conceptual landscape gets a wide variety of concepts classified as being specialized, discipline-related, operative, borrowed, coined, and methodological.
Bioindication assessment of the park ecosystems state in Kyiv
Authors:   Institute for Evolutionary Ecology of the NAS of Ukraine, Miroshnyk Nataliia , Likhanov Artur ,   National University of Life and Environmental Sciences of Ukraine, Matiashuk Raisa ,   Institute for Evolutionary Ecology of the NAS of Ukraine, Mazura Maryna ,   Institute for Evolutionary Ecology of the NAS of Ukraine, Shupova Tatiana ,   Institute for Evolutionary Ecology of the NAS of Ukraine, Honchar Hanna ,   Institute for Evolutionary Ecology of the NAS of Ukraine
Published: October 2023

The bioindicative assessment of the park ecosystems state in Kyiv (Ukraine) on the gradient of anthropogenic impact and urbanization by levels of life organization from the cell to the ecosystem was taken; the biotic diversity and state of the plant, bird, and wild bee communities were taken into account. The spatial analysis of the anthropogenic factors distribution was performed using GIS mapping. For the first time, ecosystem services of park ecosystems and their interrelationships with urbanization and biodiversity were studied for the Kyiv urban ecosystem. A system of indicators for rapid diagnostics of the degradation degree of urban parks at different levels of organization of life has been developed and tested. The monograph is intended for scientists, educators, conservationists,nature managers, and non-specialist audiences. It is recommended for making management decisions on the maintenance, conservation, and care of landscape areas in urban ecosystems.
A Year of Inpatient Telehealth: Lessons From the COVID-19 Pandemic
Authors: Hron Jonathan D. , Payvandi Lily , Parsons Chase R. , Bourgeois Fabienne C.
Published: October 2023

BACKGROUND

Relaxation of telehealth regulation enforcement during the coronavirus disease 2019 pandemic opened the door to massive expansion. Here we describe inpatient telehealth usage across a pediatric academic hospital during the first year of the pandemic.

METHODS

We created hospital bed-specific inpatient telehealth accounts and monitored their use over a 1 year period using data from our video conferencing vendor. We matched data with our enterprise data warehouse based on session date and time to identify patients who participated in telehealth. We performed secondary analysis of all video conferences to identify additional multidisciplinary team and family meetings that did not leverage the bed-specific telehealth accounts.

RESULTS

We hosted 6931 inpatient telehealth sessions associated with 1648 unique patients. Hospitalized patients participating in telehealth sessions were older and had markedly longer length of stay compared with those who did not use telehealth (median age 12 vs 8 years, P < .001; median length of stay 9.03 vs 2.03 days, P < .001). There were 2006 charges for telehealth sessions, half of which were from psychiatry providers. Secondary analysis revealed an additional 1132 sessions used for interdisciplinary team or family meetings.

CONCLUSIONS

Clinicians used inpatient telehealth to support care of hospitalized pediatric patients during the coronavirus disease pandemic, particularly for mental health care and family meetings. These findings suggest ongoing opportunities for inpatient telehealth systems beyond the pandemic.
TRAJETÓRIAS ADOLESCENTES E INFRAÇÃO: JOSÉ, ENTRE A MORTE E A APOSTA
Authors: de Oliveira Moreira Jacqueline , Máris Campos Guerra Andréa , Couto Marinho Frederico , Figueiredo Alves da Silva Bráulio , Ferreira Rodrigues Bianca , Carolina Dias Silva Ana , Caetano Pereira de Oliveira Lucas
Published: October 2023

Os homicídios são, hoje, a principal causa de morte entre jovens no Brasil e atingem especialmente jovens pobres e negros, do sexo masculino, moradores das periferias de áreas metropolitanas dos grandes centros urbanos. Nas Notas de Homicídios 4 (Waiselfisz, 2017) do autor do Mapa da Violência (Waiselfisz, 1998), foi ressaltado o aumento da mortalidade entre negros na população jovem brasileira, comparada à mortalidade entre jovens brancos, realidade recorrente ao longo dos anos. Interessante notar que o Brasil figura em terceiro lugar no ranking mundial de assassinato de crianças e jovens, precedido somente por México e El Salvador. “De 1980 a 2014, a taxa de homicídio da população na faixa de 0 a 19 anos de idade passou de 3,1 por 100 mil habitantes para 18,1 – um salto de 483,9%” (Waiselfisz, 2017, pp. 5-6).
NARRATIVAS MEMORIALÍSTICAS E ARTE NA CENA DA PESQUISA PSICANALÍTICA DE FENÔMENOS SOCIAIS
Authors: Máris Campos Guerra Andréa , de Oliveira Moreira Jacqueline , Carolina Dias Silva Ana
Published: October 2023

Este trabalho surge de um estudo psicanalítico sobre a desistência do crime na adolescência2, realizado no período de 2016 a 2018, no escopo de projeto de pesquisa financiado pela Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG) – Edital 01/2017 Demanda Universal.
The education of young noblewomen in the Grand Duchy of Tuscany in the first half of the 19th century
Authors: Sani Filippo
Published: October 2023

In light of the debates on the “feminisation of religion” that have animated historiography, during the Restoration one can distinguish two educational strategies towards the education of women. On the one hand, we can make out a symbolic system in which women, whether religious or married, fulfilled values that the male part of society seemed to deny or have forgotten. The same period, especially through the social action of the new religious congregations, saw an activity and a visibility that could not be attributed to a political dimension, but rather to a pre-political one. The relationship between women and the sacred conferred legitimacy on the reclusion of women, that is, the need for a confinement which constituted the physical and symbolic element of the continuity between the education given in monastic institutions and that of many nineteenth-century boarding schools for young women. Women's action outside the classroom belonged more to the sphere of the symbolic than to that of the useful, and, in any case, were founded on an essentially individual type of relationship.
A Necessary Debate
Authors: Meyer Nathan
Published: October 2023

The rigor and vitality of a discipline, indeed the ability to make socially meaningful contributions, is founded not solely on the accumulation of observational data but also on principled and reasoned debate concerning theory and method. For that reason, I wish to thank the editorial team at JMA for inviting me to respond to the paper by de Haas, Leppard, Waagen and Wilkinson. To the degree that the authors have missed or misconstrued several of my arguments is no doubt due in part to my own failings in presenting them. Significantly, however, it is also the result of differing intellectual commitments. I address this key, latter point first, and then respond to some of what I consider more minor points.
LEITURA PLATAFORMIZADA NA MÍDIA DIGITAL: DA SOBRECARGA INFORMACIONAL À PERDA DO PENSAMENTO CRÍTICO
Authors: Hissa Debora
Published: October 2023

Neste artigo, partimos da hipótese de que o leitor de mídias digitais como o Instagram constrói sentido por meio de frames organizados em metaenquadramentos visíveis na tela do celular. Cada frame se apresenta em porções genérica fragmentadas, ordenadas e alinhadas à barra de rolagem do feed presente na timeline de cada perfil. Examinamos o processo de agrupamento sequenciado por frames temáticos multissemióticos presentes em cada enquadramento retirado de prints da tela da plataforma pelo celular. Analisamos 120 postagens publicadas no Instagram, as quais foram divididas em seis grupos, cada um com vinte frames sequenciais. Os grupos foram separados em dois blocos: sessenta postagens de três contas pessoais; e sessenta postagens de três contas profissionais. Para descobrir padrões discursivos das relações lógico-semântica nas plataformas, analisamos o material coletado a partir das categorias de referência, diálogo, estrutura da imagem, situação e intenção; e dos eixos especificidade da imagem, conexão, organização, referências visuais e interpretação. Vimos que cada frame é percebido pelo leitor como uma unidade autônoma de sentido, como se cada fatiamento encapsulado por um gênero (notícia, propaganda, divulgação científica, meme) tivesse por si só a propriedade de significar com um alto grau de autonomia. A estratégia persuasiva de manutenção do leitor na plataforma é a constante ativação de novos referentes, além do alto teor de novidade e de imprevisibilidade de cada frames na plataforma. Esta combinação de novidade e imprevisibilidade promove um estado permanente de estimulação, o que pode gerar uma fragmentação da percepção, da memória e da compreensão leitora.