bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Influence of Cutting Parameters on Surface Topography During Turning Marine Pump Shafts
Authors: Labuda Wojciech 
Published: June 2020

Abstract
One of the greatest problems of modern production techniques is the achievement of an appropriate quality at minimal costs and accompanied by the production efficiency increase. Therefore, while designing the production process. The technology used should have a considerable influence on the durability and reliability of machine parts to be produced. During finish treatment, the final dimensions as well as functional properties are imparted to a given element by application of proper treatment type. The engineer has a range of production techniques to choose for the proper surface layer formation. Conventional turning machines belong to the basic equipment of ships, because in sea conditions, they enable the execution of a spare part or carrying out the necessary operations in the process of their regeneration. The use of modern cutting tools makes it possible to obtain a surface with low values of surface roughness parameters. The use of new generation cutting inserts on conventional lathes can cause problems for operators. The lack of the ability to ensure proper of treatment condition and setting errors of cutting tools contribute to the damage of the cutting insert or the surface of the workpiece. The article presents the results of influence of different cutting parameters on surface topography during turning process of stainless steel. A shaft made of 304L stainless steel was used for the research. The cutting process was carried out on a universal TUM 25B x 500 centre lathes. During the turning the following machining parameters were used: cutting speed Vc [m/min], feed f [mm/rev] and depth of cut ap [mm].The turning process was conducted by a cutting tool with CCGT 09T302 UM, CCGT 09T304 UM and CCGT 09T308 UM inserts. Measurement of surface topography was carried out by T8000 profilometer.
Modelling of Helicopter Main Rotor Aerodynamic Loads in Manoeuvres
Authors: Kowaleczko Grzegorz , Leśniczak Andrzej 
Published: June 2020

Abstract
The article discusses the method of modelling of the helicopter main rotor aerodynamic loads during steady state flight and manoeuvres. The ability to determine these loads was created by taking into account the motion of each blade relative to the hinges and was a result of the applied method of aerodynamic loads calculating. The first part of the work discusses the basic relationships that were used to build the mathematical model of helicopter flight. The focus was also on the method of calculating of the aerodynamic forces generated by the rotor blades. The results of simulations dedicated to the “jump to hover” manoeuvre were discussed, showing the possibilities of analysing aerodynamic loads occurring in unsteady flights. The main rotor is considered separately in an “autonomous” way and treated as a source of averaged forces and moments transferred to the hub. The motion of individual blades is neglected, and their aerodynamic characteristics are radically simplified. The motion of individual blades is neglected, and their aerodynamic characteristics are radically simplified. This can lead to significant errors when attempting to model dynamic helicopter manoeuvres. The more complex model of helicopter dynamics is discussed.
The lost chance of public education. Fatal heritage, escapism of the elites, sparks of hope
Authors: Kwieciński Zbigniew 
Published: June 2020

Summary
The article raises the question of the causes of the public education crisis, both the crisis in recent past and that conditioned by several centuries of Poland’s past. The position of Adam Podgórecki on the subject of comprehensive analyzes of Polish society is particularly important. It combines two positions. He believes that the causes of Polish systemic crises are the experiences of post-totalitarianism and specific Polish defects persisted for several centuries. The author of the article negatively assesses the possibility of overcoming the crisis of public education by academic elites, which are responsible for the collapse of universities and the crisis of higher education. Common beliefs about public education have turned out to be illusions. The author sees the hopes of improving the state of public education in resistance to the destruction of democracy and to the strong ideological and political pressure. Openness to Europe and the world, which Poles do not give away, also gives hope.
Education under the baobab tree. About reforming education in the Republic of Kenya
Authors: Czerepaniak-Walczak Maria 
Published: June 2020

Summary
In the text, on the background of a brief presentation of the political and demographic specifics of the Republic of Kenya, the education system in this country is discussed, with particular emphasis on its structure following the latest reform. The premises and assumptions of the reform of the school system and teachers’ education are briefly outlined. Current changes at universities are also discussed.
How to make research in school?-some examples off applying qualitative and mixed research strategies in analyzing of school environment on the basis of discussion about research strategies
Authors: Karkowska Magda 
Published: June 2020

Summary
Content presented in this article is focused on the reflection of the factors determining the choice of research strategy in the analysis of school environment. Some of the elements to be examined refer to the structural and functional model of a school, others to the interpretative model. As the assumptions about the nature of school reality are completely different within these models, depending on how the school is perceived, there are different ways of designing and conducting research. It is arguable whether derived from a structural and functional model of school (the school as an environment education, positivist paradigm) only quantitative analysis are justified, and after the adoption of the interactive model (the school as a system of socio-cultural, interpretative paradigm) only qualitative research should be conducted? The choice, at the first glance, quite obvious is a matter of more complex, because the strategy of research procedure also depends on some another factors: the order in which the study is carried out, the subject and the scope of the analysis, the experience of the researcher and to some extent, to the fact who are beneficients of the results. In the first part of this article author is trying to deal with these relationships, in the second part, there are presented a few examples of analysis when using qualitative methods or strategies. Most of them are realized within the model of so-called mixed research. They are only some examples presented and they should be understood as exemplifications, not in –depth exploration. Described problems might be explained and explored in the future using other methods and techniques, as well as combining them.
Beyond the Infantilization of Higher Education: Preparing students to live in an (un)safe society
Authors: Babicka-Wirkus Anna 
Published: June 2020

SummaryThe article deals with the problem of the infantilization of students, which takes place at universities. The starting point is the thesis that contemporary education at higher levels does not prepare students for the development of critical thinking and does not provide the skills to deal with problematic situations typical of global society. Instead, it approves and implements mechanisms leading to the infantilization of adults, such as: censorship, caution, language medicalization and microaggression. In the text I analyze these dangerous phenomena and indicate the consequences that they bring, not only for the development of the institution itself, but also its autonomy, and above all the students academic growth.
Performing Individualism. Two Tendencies Dismantling War Imagery in Croatian and Serbian Historical Novels of the 1960s
Authors: Czerwiński Maciej 
Published: June 2020

Abstract
The article aims at addressing the question of representations of World War Two in Croatian and Serbian literature that were subversive in the sense that they queried the legend not simply by rejecting communism and affirming nationalism, but by emphasizing the uncertainty and sensibility of the human beings, a typical modern reaction to violence and, in general, modernist topoi. In this article I will focus on modernist novelistic representations of the 1960s in which the uncertainty and instability of collective warrants are foregrounded. As a result a subversive meaning is produced which contradicts not only communism and revolution but more generally war as such, including the universal features of war such as confronting loneliness, love as an expression of an individual rather than a collective sense of existence, and the impossibility of a valid representation of past events.
The Right, Procedures and Reasons of the Withdrawal of States from International Organizations
Authors: Rashica Viona 
Published: June 2020

Abstract
Withdrawal is an act by which a member state of an international organization willingly terminates its membership. The right to withdraw from international organizations is explicitly mentioned in the constitutions of most of them and the circumstances regarding to the right of withdrawal vary depending on the organization. The purpose of this paper is to explain the right and procedures of withdrawal, and the reasons that result with the will of states to withdraw from international organizations. For the realization of this research are used qualitative methods, based on the bibliography that is related to international organizations, with special emphasis with the right and procedures of the withdrawal of states from international organizations. Furthermore, some informations are also collected from the credible internet sources, which have valuable data about the withdrawals of states from international organizations and the reasons that result with such decisions. The results of the research have shown that since the appearance of international organizations until today, there were and there are decisions of states to withdraw from international organizations, coming from the reluctance of states to hand over to international organizations parts of their sovereignty. The conclusions of this paper aim to increase knowledge about the real meaning of the processes of withdrawals of states from international organizations.
Methods of Protection of the Property Right in the Legal System of Republic of North Macedonia
Authors: Zendeli Emine 
Published: June 2020

Abstract
The article aims to analyze the legal norms that regulate the protection of the property right in the legal system of the Republic of Macedonia. In most cases, the protection of property right is realized through suits; however, our legal system provides for the possibility that the protection of property right can also be realized through the registration of immovable property rights in the respective Public Registries.
Given the fact that in the Republic of North Macedonia the normative regulation of property suits is not contained in a single normative act, but rather extends to several such acts, the article, based on the practice of the high courts, seeks to analyze the legal cases related to property rights that qualify as rights similar to property rights, but which enjoy legal protection provided by law.
The article will mainly elaborate on the basic provisions on property protection suits contained in the Law on Ownership and other Real Rights (2001). However, in this context, the provisions on property protection that are contained in the Law on Real Estate Cadastre (2008), the Law on Contentious Procedure (2005), the Law on Securing of Claims (2007), the Law on Construction Land (2008), etc., will also be taken into consideration.
Multiple Eruptive Dermatofibromas in Patient with Systemic Lupus Erythematosus
Authors: Janc Monika , Ristić Gorica , Vasić Nenad , Petrov Nenad , Sekulović Lidija Kandolf 
Published: June 2020

Abstract

Introduction. Multiple eruptive dermatofibromas are described in association with different immune-mediated conditions like SLE, pemphigus, myasthenia gravis, HIV infection, organ transplantation, acute myeloid leukemia, ulcerative colitis, atopic dermatitis and immunosuppressive therapy. Case Report. A forty-five year-old woman presented at our Department with over 20 dermatofibromas on her trunk and extremities developed spontaneously over the last 3 years, out of which more than 10 lesions developed over the previous year. The patient was diagnosed with systemic lupus erythematosus before the onset of lesions and was treated with different immunomodulatory agents (corticosteroids, methotrexate, antimalarials, azathioprine, belimumab, anti IL-6 antibody). Dermoscopy of different lesions revealed different dermatoscopic patterns without pattern predominance. A biopsy specimen of one lesion confirmed the diagnosis. Conclusion. There are few cases reports describing a possible link between systemic lupus erythematosus and multiple dermatofibromas. The mechanism is still unknown but is believed to be due to the altered immunity in immune-mediated diseases.
Blood flow restriction - short insight of the method
Authors: Puta Tiberiu , Stănilă Alexandra Mihaela , Datcu Remus 
Published: June 2020

Abstract

Introduction: The blood flow restriction method is a training method that is based on the partial occlusion of circulation during a workout. This technique combines low-intensity exercise with the occlusion of the bloodstream which produces results similar to high-intensity training.

Aim: We aimed to identify the areas in which this method is applicable, its potential benefits and effects, recommendations regarding the rules of use for maximal effects (dosage, intensity, etc.), and also possible contraindications or warnings regarding the use of this method.

Methods: We have analyzed a number of 20 articles on this topic from the field literature of the last 10 years, using ”google academic” as a search engine.

Results: After this study we concluded that blood flow restriction is a method with wide applicability in the field of sports training, but also in the recovery process; however, it requires attention in choosing the necessary equipment. For healthy individuals, best training adaptations occur when combining low-load blood flow restriction resistance exercise with traditional high-load resistance exercise.

Conclusion: Low-intensity resistance exercise with blood flow restriction is as effective as high-intensity training (for strength and muscle mass gains), but only the high-intensity protocol promotes significant hypotensive responses after exercise.
The efficiency of rehabilitation programs in the case of unoperated lumbar disc herniations
Authors: Varga Mihaela , Vutan Ana Maria 
Published: June 2020

Abstract

Introduction: More and more young people with low back pain address family doctors or orthopaedists, being subsequently directed to the medical rehabilitation centres. Recent studies have shown that the medication only, prescribed in these cases, is not sufficient for the complete reintegration of these people into the workplace and into society. Physical exercises play an important role in the rehabilitation of these subjects.

Aim: We conducted this study starting from the hypothesis that regular exercise can reduce pain and improve the well-being of patients diagnosed with lumbar disc herniation.

Methods: The study was conducted at the “Politehnica” University of Timisoara within the Department of Physical Education and Sports, between September and November 2019. Ten subjects diagnosed (both clinically and by imaging) with lumbar disc herniation were included in the study. All patients followed an exercise program 3 times a week, for 90 days. As evaluation methods we used: the subjective pain evaluation scale (VAS scale) and the health assessment questionnaire (HAQ).

Results: All the parameters followed in this study were improved following the application of the physical exercise program (muscle stretching, toning of the back and abdomen muscles, and as a result of the correct implementation of the notions of ergonomics at work and at home). In conclusion, we consider it is necessary to implement a protocol of exercises performed regularly for a long period in the case of patients with lumbar pain secondary to disc herniation.
Distribuion of Leading Digits of Numbers II
Authors: Ohkubo Yukio , Strauch Oto 
Published: June 2020

Abstract
In this paper, we study the sequence (f (p
n))n≥1,where p
n is the nth prime number and f is a function of a class of slowly increasing functions including f (x)=log
b x

r
and f (x)=log
b
(x log x)
r
,where b ≥ 2 is an integer and r> 0 is a real number. We give upper bounds of the discrepancy

D

N

i

*

(

f

(

p

n

)

,
g

)

D_{{N_i}}^*\left( {f\left( {{p_n}} \right),g} \right)

for a distribution function g and a sub-sequence (N

i
)
i

≥1 of the natural numbers. Especially for f (x)= log
b x

r
, we obtain the effective results for an upper bound of

D

N

i

*

(

f

(

p

n

)

g

)

D_{{N_i}}^*\left( {f\left( {{p_n}} \right),g} \right)

.
Notes on the Distribution of Roots Modulo a Prime of a Polynomial II
Authors: Kitaoka Yoshiyuki 
Published: June 2020

Abstract
Let f (x) be a monic polynomial with integer coefficients and 0 ≤ r
1 ≤ ··· ≤ r
n
<p its roots modulo a prime p. We generalize a conjecture on the distribution of roots r

i
with additional congruence relations r

i
≡ R

i
mod L from the case that f has no non-trivial linear relation among roots to the case that f has a non-trivial linear relation.
Cyclotomic Expressions for Representation Functions
Authors: Helou Charles 
Published: June 2020

Abstract
Given a subset A of the natural numbers 𝕅 = {0, 1, 2, ···} (resp. of the ring 𝕑/ N𝕑 of residue classes modulo a positive integer N), we introduce certain sums of roots of unity associated with A. We study some of their properties, and we use them to obtain new expressions for the classical functions that characterize A, i.e. of the representation function, the counting function and the characteristic function of A. We also give an example of computations of the representation function using such expressions.
Joint Distribution in Residue Classes of the Base-q and Ostrowski Digital Sums
Authors: Sharma Divyum 
Published: June 2020

Abstract
Let q be an integer greater than or equal to 2, and let S

q
(n)denote the sum of digits of n in base q.For

α
=

[

0
;

1
,
m

¯

]

,

m
≥
2
,

\alpha = \left[ {0;\overline {1,m} } \right],\,\,\,m \ge 2,

let S
α(n) denote the sum of digits in the Ostrowski α-representation of n. Let m
1,m
2 ≥ 2 be integers with

gcd

(

q
-
1
,

m

1

)

=
gcd

(

m
,

m

2

)

=
1

\gcd \left( {q - 1,{m_1}} \right) = \gcd \left( {m,{m_2}} \right) = 1

We prove that there exists δ> 0 such that for all integers r
1,r
2,

|

{

0
≤
n
<
N
:

S

q

(
n
)
≡

r

1

(

mod

m

1

)

,

S

α

(
n
)
≡

r

2

(

mod

m

2

)

}

|

=

N

m

1

m

2

+
0

(

N

1
-
δ

)

.

\matrix{ {\left| {\left\{ {0 \le n < N:{S_q}(n) \equiv {r_1}\left( {\bmod \,{m_1}} \right),\,\,{S_\alpha }(n) \equiv {r_2}\left( {\bmod \,{m_2}} \right)} \right\}} \right|} \cr { = {N \over {{m_1}{m_2}}} + 0\left( {{N^{1 - \delta }}} \right).} \cr }

The asymptotic relation implied by this equality was proved by Coquet, Rhin & Toffin and the equality was proved for the case

α
=

[

1
¯

]

\alpha = \left[ {\bar 1} \right]

by Spiegelhofer.
On Freiman’s 3k − 4 Theorem
Authors: Huicochea Mario 
Published: June 2020

Abstract
Let X and Y be nonempty finite subsets of 𝕑 and X +Y its sumset. The structures of X and Y when r(X, Y ):= |X +Y |−|X|−|Y | is small have been widely studied; in particular the Generalized Freiman’s 3k − 4 Theorem describes X and Y when r(X, Y ) ≤ min{|X|, |Y |} − 4. However, not too much is known about X and Y when r(X, Y ) > min{|X|, |Y |} − 4. In this paper we study the structure of X and Y for arbitrary r(X, Y ).
On the Discrepancy of Random Walks on the Circle
Authors: Bazarova Alina , Berkes István , Raseta Marko 
Published: June 2020

Abstract
Let X
1,X
2,... be i.i.d. absolutely continuous random variables, let

S

k

=

∑

j
=
1

k

X

j

{S_k} = \sum\nolimits_{j = 1}^k {{X_j}}

(mod 1) and let D*

N
denote the star discrepancy of the sequence (S

k
)1≤

k

≤

N
. We determine the limit distribution of

N

D

N
*

\sqrt N D_N^*

and the weak limit of the sequence

N

(

F

N

(
t
)
-
t

)

\sqrt N \left( {{F_N}(t) - t} \right)

in the Skorohod space D[0, 1], where F

N
(t) denotes the empirical distribution function of the sequence (S

k
)1≤

k

≤

N
.
China’s One Belt One Road (OBOR) Initiative and the Coronavirus Pandemic
Authors: Glantz M. H. 
Published: June 2020

The coronavirus (and the disease it causes, COVID-19) has proven to be a rolling crisis. Rolling in the sense that it began in central China and spread westward to the Indo-Paciﬁc region toward Europe and at the same time eastward into North America. Its impacts have been felt most intensely, so far, in several emerging hotspots along the way, such as Spain and Italy. In a matter of a few months it became a truly global pandemic and economic crisis. It continues to spread to all inhabited continents.For China, where the coronavirus started as a national epidemic, the problems were two-fold: ﬁrst the virus disrupted China’s manufacturing processes as workers became infected with a fast and easy-spreading coronavirus and, secondly, disrupted the supply chain as demand for its domestic and export goods and services rapidly decreased.
About Geopolitical Strategy of NATO in the Black Sea Pool
Authors: Ishin A. V. 
Published: June 2020

In the article geopolitical strategy of North Atlantic Treaty Organization in the Black Sea pool is examined. An author examines instruments and mechanisms of policy of NATO. The special attention is spared the problem of increase of military-strategic pressure from the side of evroatlantic structures. The «ukrainian», «georgian», «romanian», «turkish» factors is examined in the article.Attempts from the side of NATO to use these factors for strengthening of pressure on opponents having no prospects and do damage international relations. Interests of policy of neighbourliness suffer. Thus expressing interests of transnational soldiery, financial and industrial structures, the USA and their allies intrude in other civilization and politic space.An author comes to the conclusion, that experience of the last decade testifies with all evidence about strategic absence of any prospect of attempts of the use of the Black Sea area as a buffer area of isolation and inhibition of Russia. Exactly after the foreign-policy going of Russian diplomacy near development of the Black Sea region is the future.Changing of accents from a geopolitical rivalry and fight for the «spheres of influence» to mutually beneficial partnership and clear distributing of mutual spheres of responsibility for maintenance of international stability opens on principle new prospects and for a wide collaboration in the field of ecology, rational use of natural resources, development of rekreacionnoy infrastructure.