bluuebunny/crossref_metadata_2025 huggingface dataset:
The Impact of Knowledge Management Uses on Total Quality Management Practices: An Empirical Study on Commercial Banks of Jordan
Authors: Hashem Lama , Jaradat Mais
Published: April 2020

This study tested the impact of knowledge management uses on total quality management practices in commercial banks of Jordan. A quantitative research design, using regression analysis was applied in this study and a total of 250 valid returns were obtained through a questionnaire distributed to the employees of commercial banks in Jordan. Knowledge management uses was adopted as an independent variable with four subgroups: knowledge acquisition, knowledge storage, knowledge transfer and knowledge application. Total quality management practices were adopted as dependent variable with five subgroups: top management support, employee's involvement, continuous improvement, customer focus, and data driven decision management. The results show that three of the knowledge management dimensions (i.e. knowledge acquisition, knowledge storage, and knowledge transfer)   significantly affects total quality management practices. However, knowledge application showed insignificant effect. The theoretical and practical implications of this study are discussed at the end of this paper.
İktidar Döneminde ANAP'ın Demokrasi Anlayışı: Siyasalar, Söylemler ve Özal Liderliği
Authors: TUTAN Melih Nadi
Published: April 2020

Anavatan Partisi (ANAP); 1983 ila 1991 yılları arasında tek başına hükümeti kurabilme başarısını yakalamış, hem kendisi hem de toplum ve askerler tarafından iktisadi ve siyasi hayatın istikrara kavuşturulması, demokratikleşme ve modernleşme gibi misyonları edinmiş olması itibariyle Türk siyasal hayatı literatüründe önemli bir yer teşkil eden bir siyasal örgütlenmedir. Literatürde ANAP’ın tam anlamıyla demokrasi anlayışını kategorilendiren pek fazla çalışma bulunmamakla birlikte, çoğunlukla ANAP ve demokrasi; demokrasinin konsolidasyonu bağlamında tartışılmıştır. Bu nedenle çalışmanın amacı; demokrasi kuramlarından ilham alarak iki iktidar döneminde ANAP’ın demokrasi anlayışını değerlendirmektir. Bu amaçla çalışmada; öncelikle ANAP’ın bir siyasal örgüt olarak nasıl göründüğünü inceleyen çalışmalar aktarılmış ardından partinin programı, seçim beyannameleri, seçim kampanyaları, hükümet programları ve yasama faaliyetleri bir içerik analizi yöntemiyle incelenmiştir. Bununla birlikte Turgut Özal’ın ANAP içerisinde nasıl bir konum edindiği ve söylemleri de demokrasi anlayışının göstergeleri olarak çalışmanın kapsamına dahil edilmiştir. Çalışmanın sonunda, ANAP’ın örgütsel olarak ve ilk iktidar döneminde liberal, seçkinci ve ekonomik demokrasi anlayışlarını; ikinci iktidar döneminde ise oldukça zayıf da olsa bu anlayışlara katılımcı demokrasi “tema”larının eşlik ettiği görülmüştür.
Synthetic Route of Trithiolato-Bridged Dinuclear Arene Ruthenium(II) Complexes [(η6-P-MeC6H4Pri)2Ru2(μ2-SR)3]+
Authors: Primasova Hedvika , Ninova Silviya , Aschauer Ulrich , Furrer julien , Capitani Mario de , daepp Jana
Published: April 2020

Several dinuclear thiophenolato-bridged arene ruthenium complexes [(η6-p-MeC6H4Pri)2Ru2(μ2-SC6H4-R)3]+ could so far only

be obtained with moderate yields using the synthetic route established in the early 2000s. With much less reactive aliphatic

thiols or with bulky thiols, the reactions become even less efficient and the desired complexes are obtained with low yields

or not at all. We employed density functional theory (DFT) calculations to gain a fundamental understanding of the reaction

mechanisms leading to the formation of dithiolato and trithiolato complexes starting from the dichloro(pcymene)

ruthenium(II) dimer [(η6-p-MeC6H4Pri)Ru(μ2-Cl)Cl]2. The results of the DFT study enabled us to rationalise

experimental results and allowed us, via a modified synthetic route, to synthesise previously unreported and hitherto

considered as unrealistic complexes. Our study opens possibilities for the synthesis of so far inaccessible thiolato-bridged

dinuclear arene ruthenium(II) complexes but more generally also the synthesis of other thiolato-bridged dinuclear group 8

and 9 metal complexes could be reexamined.
Active Learning Accelerates Ab Initio Molecular Dynamics on Pericyclic Reactive Energy Surfaces
Authors: Ang Shi Jun , Wang Wujie , Schwalbe-Koda Daniel , Axelrod Simon , Gomez-Bombarelli Rafael
Published: April 2020

Modeling dynamical effects in chemical reactions, such as post-transition state bifurcation, requires ab initio molecular dynamics simulations due to the breakdown of simpler static models like transition state theory. However, these simulations tend to be restricted to lower-accuracy electronic structure methods and scarce sampling because of their high computational cost. Here, we report the use of statistical learning to accelerate reactive molecular dynamics simulations by combining high-throughput ab initio calculations, graph-convolution interatomic potentials and active learning. This pipeline was demonstrated on an ambimodal trispericyclic reaction involving 8,8-dicyanoheptafulvene and 6,6-dimethylfulvene. With a dataset size of approximately31,000 M062X/def2-SVP quantum mechanical calculations, the computational cost of exploring the reactive potential energy surface was reduced by an order of magnitude. Thousands of virtually costless picosecond-long reactive trajectories suggest that post-transition state bifurcation plays a minor role for the reaction in vacuum. Furthermore, a transfer-learning strategy effectively upgraded the potential energy surface to higherlevels of theory ((SMD-)M06-2X/def2-TZVPD in vacuum and three other solvents, as well as the more accurate DLPNO-DSD-PBEP86 D3BJ/def2-TZVPD) using about 10% additional calculations for each surface. Since the larger basis set and the dynamic correlation capture intramolecular non-covalent interactions more accurately, they uncover longer lifetimes for the charge-separated intermediate on the more accurate potential energy surfaces. The character of the intermediate switches from entropic to thermodynamic upon including implicit solvation effects, with lifetimes increasing with solvent polarity. Analysis of 2,000 reactive trajectories on the chloroform PES shows a qualitative agreement with the experimentally-reported periselectivity for this reaction. This overall approach is broadly applicable and opens a door to the study of dynamical effects in larger, previously-intractable reactive systems.
How ATP-Competitive Inhibitors Allosterically Modulate Tyrosine Kinases That Contain a Src-like Regulatory Architecture
Authors: Fang Linglan , Vilas-Boas Jessica , chakraborty sujata , potter zachary , Register Ames , Seeliger Markus , Maly Dustin J.
Published: April 2020

Small molecule kinase inhibitors that stabilize distinct ATP-binding site conformations can differentially modulate the glob-al conformation of Src-family kinases (SFKs). However, it is unclear which specific ATP-binding site contacts are responsible for modulating the global conformation of SFKs and whether these inhibitor-mediated allosteric effects are general to other tyrosine kinases. Here, we describe the development of chemical probes that allow us to deconvolute which features in the ATP-binding site are responsible for the allosteric modulation of the global conformation of Src. We find that the ability of an inhibitor to modulate the global conformation of Src’s regulatory domain-catalytic domain module relies mainly on the influence it has on the conformation of a structural element called helix aC. Furthermore, by developing a set of orthogonal probes that target a drug-sensitized Src variant, we show that stabilizing Src’s helix aC in an active conformation is sufficient to promote a Src-mediated, phosphotransferase-independent alteration in cell morphology. Finally, we report that ATP-competitive, conformation-selective inhibitors can influence the global conformation of tyrosine kinases beyond the SFKs, suggesting that the allosteric networks we observe in Src are conserved in kinases that have a similar regulatory architecture. Taken together, our study highlights that an ATP-competitive inhibitor’s interactions with helix aC can have a major influence on the global conformation of some tyrosine kinases in vitro and in cells.
Improving Phase-Transfer Catalysis by Enhancing Non-Covalent Interactions
Authors: Iribarren Iñigo , Trujillo Cristina
Published: April 2020

A wide variety of asymmetric transformations catalysed by chiral catalysts have been developed for the synthesis of valuable organic compounds in the past several decades. Within asymmetric catalysis field, phase-transfer catalysis has been recognized as a powerful method for establishing useful procedures for organic synthesis. In the present study intermolecular interactions between a well-known alkaloid quinine-derived phase transfer catalyst and four different anions were characterised, analysing the competition between the pure ion-pair interaction and the intermolecular hydrogen bond established upon complexation. Finally, the energy profile corresponding to the enantioselective conjugate cyanation of a a,b-unsaturated ketone, under the presence of two different catalysts were performed.
Potent and Selective N-Terminal BRD4 Bromodomain Inhibitors by Targeting Non-Conserved Residues and Structured Water Displacement
Authors: Cui Huarui , Divakaran Anand , Pandey Anil K. , Johnson Jorden A. , zahid huda , hoell zachary , ellingson mikael , shi ke , Aihara Hideki , Harki Daniel A. , pomerantz william
Published: April 2020

This manuscript focuses on the structure-based design of selective inhibitors of the first bromodomain of BRD4. This manuscript uses describes organic synthesis to make inhibitors, and biophysical analysis to evaluate their inhibitor potency in competive inhibition assays (fluorescence anisotropy assays and AlphaScreen). Binding mode is evaluate from protein co-crystal structures. Cell activity is evaluated in cell viability assays, target engagement CETSA assays analyzed via western blot, and inhibition of Myc via western blot analysis.
Design, Synthesis and in Vivo Evaluation of 3-Arylcoumarin Derivatives of rhenium(I) Tricarbonyl Complexes as Potent Antibacterial Agents Against Methicillin-Resistant Staphylococcus Aureus (MRSA)
Authors: Sovari Sara Nasiri , Vojnovic Sandra , Bogojevic Sanja Skaro , Crochet Aurélien , Pavic Aleksandar , Nikodinovic-Runic Jasmina , Zobi Fabio
Published: April 2020

Preparation of a series of ten 3-arylcoumarin molecules, their respective fac-[Re(CO)3(bpy)L]+ and fac-[Re(CO)3(L⁀L)Br] complexes. All compounds were tested for their antimicrobial efficacy. Whereas the 3-arylcoumarin ligands are virtually inactive against the human-associated pathogens with minimum inhibitory concentrations (MICs) > 150 µM, when coordinated to the fac-[Re(CO)3]+ core, most of the resulting complexes showed remarkable antibacterial potency. Several rhenium complexes exhibit activity in nanomolar concentrations against Gram-positive pathogens such as Staphylococcus aureus strains, including methicillin-resistant S. aureus (MRSA) and Enterococcus faecium. The molecules do not affect bacterial cell membrane potential, but some of the most potent complexes strongly interact with DNA, indicating it as a possible target for their mode of action. In vivo studies in the zebrafish model showed that the complexes with anti-staphylococcal/MRSA activity were non-toxic to the organism even at much higher doses of the corresponding MICs. In the zebrafish-MRSA infection model, the complexes increased the survival rate of infected fish up to 100 % and markedly reduced bacterial burden. Moreover, all rescued fish developed normally following the treatments with the metallic compounds.
Chemical Reaction Monitoring Using Zero-Field Nuclear Magnetic Resonance Enables Study of Heterogeneous Samples in Metal Containers
Authors: Burueva Dudari B. , Eills James , Blanchard John W. , Garcon Antoine , Picazo Frutos Román , Kovtunov Kirill V. , Koptyug Igor , Budker Dmitry
Published: April 2020

We demonstrate that heterogeneous/biphasic chemical reactions can be monitored with high spectroscopic resolution using zero-field nuclear magnetic resonance. This is possible because magnetic susceptibility broadening is insignificant at ultralow magnetic fields. We show the two-step hydrogenation of dimethyl acetylenedicarboxylate with para-enriched hydrogen gas in conventional glass NMR tubes, as well as in a titanium tube. The low frequency zero-field NMR signals ensure that there is no significant signal attenuation due to shielding by the electrically conductive sample container. This method paves the way for in situ monitoring of reactions in complex heterogeneous multiphase systems and in reactors made from conductive materials without magnetic susceptibility induced line broadening.
Impacts of Ion-Pairing Effects on Linear and Nonlinear Photophysical Properties of Polymethines Dyes
Authors: Pascal Simon , Chi San-Hui , Perry Joseph W. , Andraud Chantal , MAURY Olivier
Published: April 2020

Ion-pairing between cationic heptamethine and small bromine anion in a non-dissociating solvent results in a symmetry breaking towards a dipolar type chromophore, a transition that is never observed in presence of a bulky B(C6F5)4 anion. For the first time, the effects of ion-pairing on the linear and nonlinear photophysical properties is investigated and reveals significant discrepancies between cyanine and dipolar states.
Design and synthesis of novel heterocyclic compounds as a PPAR-γ agonist
Authors: Zambare Y. B.  , Bhole R. P.  , Chitlange S. S.
Published: April 2020

The multifarious metabolic syndrome, diabetes mellitus (DM), is a diseaseof concern all over the world and is approximate to affect 400 million individuals by the 2020. Several classes of drugs at the moment are available to lessen hyperglycemia in diabetes mellitus especially in Type-II. These drugs mostly have dangerous side effects and thus incisive for a new class of compounds is necessary to conquer this inconvenience. A series of 6 novel 5-nitrobenzofuran-2yl-carbamides derivatives were synthesized and molecular docking studies were performed on PPAR-γ target using (PDB code-4rfm).The preparation of5-nitro-1-benzofuran-2-carbohydrazide(4) on action with acetic acid, 1, 4-diaxone and sodium nitrite resulted in 5-nitro-1-benzofuran-2-carbonyl azide (5).The related compound (5) on action with substituted aromatic substituted amines undergoes Curtis type of rearrangement to give 5-nitro-N-(sub. carbamoyl)-1-benzofuran-2-carboxamide.The characterization and identification of prepared compounds were identified on the basis of NMR, IR, Mass and elemental analysis. Docking study of targeted compounds were done using software Autodock Tools 1.5.6 and visualisation done by Discovery Studio 3.5 software (Accelrys Inc. San Diego, CA USA). Molecular docking studies, the binding energies are determined to be in the range of –5.90 to –9.80 kcal/mol, with peroxisome proliferator activated receptor γ (PPAR-γ) receptors (PDB ID: 4RFM). The prepared compounds have been studied for their oral glucose tolerance test to distinguish the effect on plasma glucose level.
Mexico’s 2018 Report Card on Physical Activity for Children and Youth: Full report
Authors: Argumedo Gabriela , Taylor Juan Ricardo López , Gaytán-González Alejandro , González-Casanova Inés , Villalobos Martín Francisco González , Jáuregui Alejandra , Ulloa Edtna Jáuregui , Medina Catalina , Miranda Yoali Selene Pacheco , Rodríguez Marcela Pérez , Resendiz Eugen , Pelayo Ricardo Alejandro Retano , Martínez María del Pilar Rodríguez , Galaviz Karla I.
Published: April 2020

Objectives.Mexico’s 2018 Report Card evaluates the opportunities available for Mexican children and youth to reach healthy levels of physical activity, sleep, and sedentary behavior.

Methods.The Report Card is a surveillance system that gathers data from national surveys, censuses, government documents, websites, grey literature, and published studies to evaluate 16 indicators in four categories: Daily Behaviors; Physical Fitness; Settings and Sources of Influence; and Strategies and Investments. Data were compared to established benchmarks. Each indicator was assigned a grade from 1 – 10 (< 6 is a failing grade) or “incomplete” if data was insufficient/unavailable.

Results.Daily Behavior grades were: Overall Physical Activity, 4; Organized Sport Participation, 5; Active Play, 3; Active Transportation, 5; Sleep, 7; and Sedentary Behavior, 3. Physical Fitness, received a 7. Settings and Sources of Influence grades were: Family and Peers, incomplete; School, 3; and Community and Environment, 4. Strategies and Investments were: Government Strategies, 6; and Non-Government Organizations, 2.

Conclusion.Low grades in 11 of the 16 indicators indicate that schools, families, communities, and government need to work together to improve physical activity opportunities for children and youth in Mexico.
Modeling of Transport and Logistics Systems and the Study of the Structural Stability
Authors: Yatskin D. V. , Kochkarov A. A. , Kochkarov R. A.
Published: April 2020

The structural stability of the system to external influences is an important parameter of the transport and logistics task. In modern literature, the concept of structural stability is defined as applied to each individual problem, as a result of which there are difficulties in applying the developed methods to new problems. The paper describes assessing the stability of the functioning of transport and logistics systems. The methodological base of the research includes the theory of optimal control and multicriteria optimization; elements of graph theory are used as modeling tools, as well as numerical analysis to evaluate stability coefficients. A list of actions on the system in the form of elementary events over graphs, including their superposition, is proposed. There was proposed the concept of structural destruction of a graph that implies a partition of the graph into disconnected components. The formulation of the combined transport and logistics problem —  the search for flows and routes. The authors propose an efficiency coefficient for comparing the obtained solutions, as well as a stability coefficient for assessing the influence of structural changes in the graph on the solution of the problem. A computer simulation of structural destruction on test data sets was carried out. As a result of experiments series, the distribution of a special coefficient for elementary fracture processes was established, as well as an interval of permissible values   corresponding to a stable state of the system. The theoretical significance of the study lies in the possibility of using the results obtained at the stage of designing transport and logistics networks. From a practical point of view, the proposed tools can be used to assess the stability of the functioning of existing transport and logistics systems.
Economic Exchanges Management in the Exhibition Bilateral Market
Authors: Simonov K. V.
Published: April 2020

The slowdown in Russian economy caused a drop in demand for exhibition business services. Operating in the segment of trade fairs organizing companies faced a decrease in the intensity of economic exchanges due to the outflow of customers. The paper considers modification of the exchange management in order to intensify the latter. The research methodology bases the provisions of the theory of bilateral markets, theories of management, marketing and logistics, methods of analysis and synthesis, as well as on the experience of exhibition activities. As a result of the study: the expediency of application by linear companies-organizers of the business model “two-sided market” was justified; the interpretation of business model determined by two-component functional two-stage system was given when the platform (service) is prepared within the linear fragment and then the main fragment turns on — two-sided market, providing intensification of exchanges management by means of asymmetric pricing strategies and network effects. Recommendations are formulated for practitioners who are puzzled by the problem of economic exchanges intensification. The combination of these theoretically and practically significant results develops the theory of two-sided exhibition markets, as well as provides scientific support in the format of recommendations and descriptions of tools that help exhibition business practitioners cope with the problem of managing economic exchanges.
The Choice of work for Outsourcing: Assessment Tools
Authors: Zhdanov D. A.
Published: April 2020

The more extensive usage of outsourcing technology poses the challenge for enterprise management to identify possible benefits and problems of such cooperation. For this reason, the purpose of this study is to establish a procedure to determine the operations most suitable for outsourcing. The methodological base of the work consists of the new institutional economic theory provisions; situational analysis, mathematical and logical modeling of the identified relationships are used as methods of study. As a research result, the author detailed the elaboration of criteria that determine the effectiveness of the business processes transfer of the company to an external operator. As well as he specified the sequence of their application within a single procedure of the assessment. There are combined the specified factors in four directions, which characterize the key organizational and economic aspects of outsourcing. The specific feature of the approach is the consideration not only of traditional parameters related to the study of customer requests and the contractor capabilities, but also the nature of the relationship between the parties, as well as the state of the market environment in which the work is carried out. In conclusion, the author proposed an algorithm forexpress-assessment of the effectiveness of the transfer of operations to a third-party operator, based on the introduced approach. The results obtained will be useful to managers for identifying business development opportunities based on the outsourcing.
Managerial Excellence as the Basis for the Success in the Digital Transformation of Public Services
Authors: Vasil’eva E. V.
Published: April 2020

The goal of improving the efficiency of public administration is a priority in the implementation context of the Digital Economy of the Russian Federation Program. The paper provides the formation of a strategy for managing public service personnel based on the principles of a management staff diversity and employees involvement to solve problems of increasing the level of personnel potential. The purpose of the study is to determine the requirements for public service management, to identify a new set of tasks for the top management of a company that transfers most of its activities to digital platforms. The author presents an approach to improving a company’s performance in the digitalization of economy and society. The implementation of the strategy for management excellence is based on the principle of “smart simplicity” and the formation of new professional qualities of the head of the public service. The paper gives a feature of using the 360-degree competency assessment methodology. It presents the world and domestic experience of changing the strategy of personnel management in a modern organization that has embarked on the path of digital transformation. The main requirements to the competence of the Executive who should have knowledge in professional and technical fields being able to think globally and have a wide managerial experience and vision, to have foresight being proactive to turn the company strategy into a new quality. A list of key indicators has been formulated that can be used for monitoring personnel management activities aimed at the successful implementation of a managerial excellence strategy.
Developing an Innovation Management Strategy for Educating Managers on Disaster risk reduction
Authors: Puchkov V. A.
Published: April 2020

In modern conditions of increasing threats, challenges, dangers and threats of various types, it is necessary to create a system of innovative training of managers. The paper considers the formation of an innovation management strategy for education of managers on disaster risk reduction and the development of methodological support for this activity. In the course of work to achieve the goal, key tasks were solved: the organizational basis for the formation of an integrated education system was justified, proposals for creating an information and organizational learning innovation were developed, and the basis for a new unified innovative information and communication educational platform was created. Methodological recommendations for innovative training of managers are proposed. The research methodology provides for the creation of innovative and technological matrixes of Executive education based on modern methods of analysis and synthesis, expert assessments, modeling, analogies, and observation. The results of the research are the main provisions of the innovation management strategy for education of managers on disaster risk reduction, organizational and methodological support for this activity. On their basis, a comprehensive system of training managers has been created, and modern training programs and practices in the field of disaster management have been introduced. Recommendations for the consolidation of key modern achievements of science and technology in the educational sphere are formulated. The study may be of interest to state authorities in the formation and implementation of the state strategy of innovative management of education of managers, which provides a high modern level of training.
A device for controlling the energy of ionizing electrons in the low-energy range designed to form a complete mass spectrum of negative ions using a quadrupole mass spectrometer
Authors: Terentyev A. G. , Khatymov R. V. , Maltsev A. V.
Published: April 2020

Operation with positive ions formed from the impact of high energy electrons (usually 70 eV, which exceeds the ionization energy of the molecules) is a standard mode for mass spectrometric detectors of most gas chromatography-mass spectrometric complexes (GC/MS) in the basic configuration. At the same time, we have shown that the option of setting the energy of ionizing electrons (maintained in the design of some serial devices) within the pre-ionization region also allows one to obtain mass spectra of negative ions (NI) which, in turn, significantly expands the analytical potential of standard equipment. The formation of NI occurs in the low-energy range of 0 – 15 eV due to resonant capture of electrons by molecules (REC). In contrast to positive ions, the intensity of NI formation sharply (resonantly) depends on the electron energy and this dependence is characteristic of each chemical compound. Both the relative intensity of the mass-peaks and, in general, the ionic composition of the formed mass spectrum of NI significantly depend on the electron energy. The problem of choosing the optimal energy of ionizing electrons providing the same efficiency of mass-spectrometric determination of all components of complex mixtures of dissimilar compounds is also associated with the features of negative ion formation during chromatography-mass spectrometric analysis. To address the problem, we propose a technique providing generation of complete (in NI composition and intensities) mass spectra of NI through repeated variation of the energy of ionizing electrons in a given range of 0 – 10 eV. Technical implementation of the technique [1] was carried out at the Design Bureau «Chromatec «(Yoshkar Ola, Russia) in the form of a special electronic device, which was tested in pilot operation as part of the gas chromatograph complex with a quadrupole mass spectrometer «Chromatec». We describe the principle of operation of the device and present the results of tests.
Using of photogenerated iodine for determination of 1,1-dimethylhydrazine in environmental objects
Authors: Turusova E. V. , Nasakin O. E.
Published: April 2020

A photochemical method for determination of 1,1-dimethylhydrazine H2NN(CH3)2 (unsymmetrical dimethylhydrazine (UDMH)) based on titration of the analyte with photogenerated iodine obtained by irradiation of an auxiliary solution containing potassium iodide and a mixture of sensitizers (EOSIN Y:auramine:fluorescein taken in a molar ratio 1:1:1) in an acetate medium (pH 6) has been developed. With increasing acidity, a decrease in the rate of photogeneration is observed which is most likely attributed to disproportionation of the resultant titrant. Since the titrant (iodine) content is controlled by the voltammetric method, the photochemical titration of UDMH is accompanied by a decrease in the current strength in the circuit of the amperometric setup and stabilization indicates the completeness of the reaction. Measurements of the photogeneration time necessary to compensate for the loss of titrant in the cell upon further irradiation of the solution in the presence of atmospheric oxygen provide quantitative assessing of the UDMH content in environmental objects. Since the analyte interacts with the titrant in a molar ratio 1:2, we suggest the possibility of UDMH oxidation to NDMA (N-nitrosodimethylamine). A photochemical method of UDMH determination in solution is thus developed with the detection and determination limits (0.49 and 1.62) μg/ml, respectively. Unfortunately, the sensitivity of the proposed methodology does not allow determination of a toxic chemical contaminant at the MPC level which necessitates preconcentration of the mobile forms of UDMH by steam distillation in a 40 % sodium hydroxide solution. The developed methodology matches the validation parameters by the indices of linearity, ranking, correctness and thus can be recommended for determination of the UDMH content in any analytical laboratory. The photochemical method was tested in the analysis of soil samples taken from background and contaminated territories as well as natural water. A slight excess of the UDMH content has been found in the soil taken from the former location of the military unit.
A machine for real-time estimation of the tribological characteristics of materials
Authors: Abramchuk M. V. , Pechenko R. V. , Nuzhdin K. A. , Musalimov V. M.
Published: April 2020

A reciprocating friction machine Tribal-T intended for automated quality control of the rubbing surfaces of tribopairs is described. The distinctive feature of the machine consists in implementation of the forced relative motion due to the frictional interaction of the rubbing surfaces fixed on the drive and conjugate platforms. Continuous processing of the signals from displacement sensors is carried out under conditions of continuous recording of mutual displacements of loaded tribopairs using classical approaches of the theory of automatic control to identify the tribological characteristics. The machine provides consistent visual real time monitoring of the parameters. The MATLAB based computer technologies are actively used in data processing. The calculated tribological characteristics of materials, i.e., the dynamic friction coefficient, damping coefficient and measure of the surface roughness, are presented. The tests revealed that a Tribal-T reciprocating friction machine is effective for real-time study of the aforementioned tribological characteristics of materials and can be used for monitoring of the condition of tribo-nodes of machines and mechanisms.
VOLLEYBALL SMASH SKILL TRAINING MODEL USING RUBBER TIRE AIDS FOR STUDENTS OF SMK
Authors: Subagio Rohmad , Rihatno Taufik , Hernawan Iwan , Firdiansyah Bahtiar
Published: April 2020

The purpose of this study is to produce a product in the form of volleyball smash skills training methods using rubber tire aids to improve smash skills in volleyball games. The research method used is the development of Borg and Gall. Based on the data collected, it is known through the material expert and media expert tests conducted twice each, obtained the results of the material I test with a percentage of 68.75% (quite valid) and the results of II with an average of 87.50% ( valid). While the results of media experts obtained results I amounted to 65.40% (quite valid) and results II with an average of 84.62% (valid). From small scale trials (N = 8), results with an average percentage of 81.19% (valid) and large scale field tests (N = 30) obtained results with a percentage of 90.83% (valid). Based on the results of the data obtained, it can be concluded that the product development of the smash skills training model with rubber tire aids for volleyball extracurricular athletes after going through several stages including preliminary test stages, expert validation tests, small and large group tests, model effectiveness test concluded can be accepted by users, especially schools that have and are active in coaching volleyball.
ANALYSIS OF TECHNICAL, ALLOCATIVE AND ECONOMIC EFFICIENCIES OF YAM PRODUCERS IN GANYE LOCAL GOVERNMENT AREA OF ADAMAWA STATE, NIGERIA
Authors: A. Aliyu  , A. B Shelleng
Published: April 2020

The study investigated the technical, Allocative and economics efficiencies of yam producers in Ganye Local government Area, Adamawa State, Nigeria. Combinations of purposive and random sampling techniques were employed using 100 famers from five different wards of the local government. In the first place, five wards were selected and used for this study and twenty farmers were selected from each ward, making a total of 100 famers, twenty. The analytical tool used to achieve the objectives of this study was Data Envelopment Analysis. The results of the study revealed that 57% of the farmers had technical efficiency of 0.81 and above while 43% of the farmers operate at less than 0.81 efficiency level. The mean technical efficiency for the 100 sampled farmers in the study area was 0.78. The farmer with the best practice has a technical efficiency of 1.00 while 0.37 is for the least efficient farmers. This implies that on the average, output fall by 0% from the maximum possible level of 1.00 due to technical inefficiency. The mean allocative efficiency was 0.98. The result indicates that average yam farmer in the state would enjoy cost saving of about 5% while allocative inefficient farmer will have an efficiency gain of 95% to attain the level of most efficient farmer among the respondents. The mean economic efficiency was 0.77. The farmer with the best practice has an economic efficiency of 1.0 while 0.08 was for the least efficient farmers. This implies that on the average, output fall by 52% from the maximum possible level due to inefficiency. Finally, among the constraints identified in the study area, the majority of the respondent attested to the fact that high cost of inputs, transportation problem, lack of credit facilities and storage/preservation problem were the major constraints they faced in yam production in the area. The study concludes that yam farmers in the study area have achieved absolute efficiency in the use of variable inputs. It was found that yam production in the study area is profitable.
THE EFFECT OF DISTRIBUTION STRENGTH ON CUSTOMER SATISFACTION IN PT SEMEN TIGA RODA
Authors: Jamaludin Agus , Toto Widiarto  , Chandrasari Ani interdiana
Published: April 2020

Distribution is an activity that must be carried out by every company in order to cause and guarantee the supply of products in the market so that people get, then in an effort to find and obtain products that are expected to fulfill some of their life needs. The purpose of this study was to determine how much influence the smooth distribution with customer satisfaction at PT Semen Tiga Roda. Distribution channels are a device that is interdependent in providing a product or service to be used or consumed by consumers or business users. Satisfaction is the feeling of being happy or disappointed someone who appears after comparing the performance (results) of the product that is thought of the expected performance. The population studied was 50 respondents and a sample of 20 respondents was taken with random sampling. The research method used is the library method and field method by means of questionnaire spread. The type of data used by the author is qualitative data originating from the questionnaire which then answers the respondents given a score so that it becomes quantitative data. From the results of these calculations obtained hypothesis test results, namely: Y = 18.28 + 0.43 X, r = 0.56, and t = 2.866. From the results of statistical calculations have obtained a correlation coefficient of 0.56, which means that the smooth distribution with customer satisfaction has a positive and very significant influence, while the coefficient of determination obtained at 31.36% turned out to be influenced by the smooth distribution of the good, the rest of 68.64% is influenced by other factors (returns, after-sales and services) that are not examined directly by the author. In the research hypothesis test also obtained the value of t count 2.866 greater than t table 2.101, with an error rate of 5% (0.05) then according to the applicable provisions means that Ha is accepted and H0 is rejected.
THE EFFECT OF INSTRUCTIONAL LEADERSHIP AND PERSISTENCE ON TASK PERFORMANCE
Authors: Wahyuni Novi Sartika , I Made Putrawan  , Sari Eliana
Published: April 2020

Task performance is the responsibility and duty carried out by each teacher in carrying out his work which contributes to administrative tasks. This study aims to provide information about the influence of instructional leadership and persistence on task performance. The causal survey involved 120 teachers, selected using Simple Random Sampling (SRS). There are three instruments developed to measure task performance (25 items, reliability 0.952), instructional leadership (30 items, reliability 0.948) and persistence (24 items, reliability 0.940). Data were analyzed using regression, correlation, and path analysis. The results of the analysis show that the instructional leadership and persistence have a direct and significant influence on the teacher's performance tasks. Therefore, to improve teacher performance tasks, factors such as instructional leadership and persistence need to be considered.
Laju Deoksigenasi Sungai Bedadung Hilir Akibat Pencemar Organik
Authors: Dharmawan Agus , Wahyuningsih Sri , Novita Elida
Published: April 2020

ABSTRACTBedadung stream, located at Rambipuji, Balung, Wuluhan, and Puger, is downstream where dilution of organic wastes occurred and affects its water quality. Microorganisms decompose organic wastes and lead to depletion of dissolved oxygen in the water. The aim of this research was to analyze the deoxygenation rate of Bedadung downstream. The raw data was obtained by measuring stream flows and its water quality parameters (Temperature, DO and BOD) at 5 observed stations. The laboratory analysis consisted of BOD5 and long-term BOD2,4,6,8,10. Increasing the value of BOD for 10 days had a tendency of polynomial pattern order 3 with a coefficient of determination R 0.8987 – 0.9781. The 10 days BOD reactions were used to determine deoxygenation constant K (using least square method) with the result of ranged value 0.043 – 0.372 /day and Ultimate BOD 1.487 – 8.683mg/L. The values of deoxygenation rate at 5 stations were 0.182, 7.997, 7.236, 2.192, and 1.083 mg/L.day. The deoxygenation values were had a similar tendency with the amount of organic waste in the water column and its reduction rate due to the decomposition process.Keywords: Bedadung, BOD, Deoxygenation Rate, DOABSTRAKSungai Bedadung yang terletak di Kecamatan Rambipuji, Balung, Wuluhan dan Puger, merupakan sungai bagian hilir dimana zat pencemar organik bercampur, sehingga mempengaruhi kualitas perairan. Pencemar organik tersebut didekomposisi oleh mikroorganisme perairan sehingga menurunkan DO perairan. Tujuan penelitian ini adalah untuk mengkaji deoksigenasi Sungai Bedadung hilir. Data primer diperoleh dari pegukuran debit dan kualitas air (Temperatur, DO, dan BOD) di 5 (lima) titik pantau. Pengamatan BOD5 dan BOD2,4,6,8,10 dilakukan secara laboratorium. Peluruhan nilai BOD selama 10 hari cenderung memiliki tren polinomial dengan koefisien determinan berada pada nilai 0,8987 – 0,9781. Nilai peluruhan digunakan untuk menentukan nilai K (menggunakan metode least square) dan BOD ultimat. Nilai K di lima titik pantau menunjukkan rentang nilai 0,043 – 0,372 /hari dan BOD ultimat 1,487 – 8,683 mg/L. Sedangkan laju deoksigenasi di lima titik pantau menunjukkan nilai berturut-turut 0,182; 7,997; 7,236; 2,192; dan 1,083 mg/L./hari. Besar nilai deoksigenasi sangat ditentukan oleh banyaknya kandungan pencemar organik dalam air dan kecepatan reaksinya saat proses dekomposisi.Kata Kunci: Bedadung, BOD, Laju Deoksigenasi, DO
Penyadapan Tanaman Karet (Hevea brasiliensis Mull-Arg.) di Perkebunan Karet Gurach Batu Estate, Asahan, Sumatera Utara
Authors: Arja Awliya Rahmi , Supijatno .
Published: April 2020

Kegiatan penelitian dilaksanakan di Divisi IV Gurach Batu Estate PT Bakrie Sumatera Plantation Tbk Asahan, Sumatera Utara sejak Februari 2016 sampai Juni 2016. Tujuan pelaksanaan penelitian adalah mempelajari dan melakukan kegiatan penyadapan karet untuk meningkatkan keterampilan teknis dan manajerial secara langsung di lapangan. Penyadapan adalah kegiatan utama pada perkebunan karet, maka harus dilakukan dengan manajemen yang baik. Penyadapan di GBE masih belum sesuai dengan standar perusahaan namun masih dalam rentang yang dapat ditoleransi. Rata-rata ketebalan pemakaian kulit sadap ada frekuensi sadap d/4 dan d/3 adalah 1.3 mm dan 1.6 mm. Rata–rata kedalaman irisan sadap pada sadapan d/4 adalah 2.5 mm dan pada sadapan d/3 0.9 mm. Produksi latek yang didapatkan oleh penyadap kelas A lebih banyak dibanding kelas B, dan pemakaian kulit oleh kelas A lebih sedikit dibanding kelas B. Kecepatan menyadap kelas A dan kelas B tidak berbeda nyata yaitu sekitar 16.17 detik pohon-1 dan 17.97 detik pohon-1. Aplikasi zat stimulan yang dilakukan di Divisi IV GBE telah sesuai dengan aturan dan standar perusahaan. Persentase serangan KAS pada klon RRIM 921, PB 260 dan IRR 118 adalah 6.6%, 7.5%, dan 5.75%. Sebaiknya dilakukan penanganan yang lebih serius terhadap serangan KAS di GBE karena tingkat serangan tergolong tinggi. Pengawasan sadapan pada panel B sebaiknya lebih diperhatikan.
Manajemen Pemupukan Organik dan Anorganik Kelapa Sawit di Sekunyir Estate, Kalimantan Tengah
Authors: Juliansyah Gery , Supijatno .
Published: April 2020

Kegiatan penelitian dilaksanakan di Sekunyir Estate, Kalimantan Tengah dari tanggal 9 Februari hingga 8 Juni 2016. Pemupukan kelapa sawit bertujuan untuk memenuhi kebutuhan hara tanaman sehingga dapat berproduksi optimal. Pemenuhan kebutuhan hara tanaman kelapa sawit dilakukan secara organik dengan memanfaatkan limbah TKKS (Tandan Kosong Kelapa Sawit) dan anorganik. Biaya pemupukan sebesar 60% dari total seluruh biaya produksi kelapa sawit sehingga perlu manajemen yang baik dalam pengelolaannya. Hasil pengamatan menunjukan bahwa manajemen pemupukan di Sekunyir Estate sudah sangat baik dengan menerapkan konsep efektivitas dan efisiensi. Efektifitas dilihat dari aplikasi pemupukan dengan konsep 4T yaitu tepat (waktu, dosis, jenis dan cara). Efisiensi bertujuan agar penggunaan input produksi dapat sesuai dengan kebutuhan. Sekunyir Estate telah melakukan efisiensi biaya sebesar 60% pada pemupukan anorganik dan 55% pada pemupukan organik. Aplikasi TKKS di Sekunyir Estate tidak berpengaruh nyata terhadap produktivitas dan pengurangan pupuk kalium karena dipengaruhi oleh aplikasi teknis di lapangan. Manajemen pemupukan organik dan anorganik pada kelapa sawit harus dikelola secara baik dan benar agar menghasilkan produksi kelapa sawit yang optimal serta berkelanjutan.
Peranan Pupuk Nitrogen dan Fosfor pada Tanaman Kelapa Sawit (Elaeis guineensis Jacq.) Belum Menghasilkan Umur Tiga Tahun
Authors: Albari Jabal , Supijatno . , Sudradjat .
Published: April 2020

Pada saat ini lahan semakin terbatas untuk ekstensifikasi dalam perluasan lahan perkebunan kelapa sawit, oleh karena itu perlu adanya peningkatkan produktivitas melalui peningkatkan efektivitas dan efesiensi penggunaan pupuk. Penelitian ini bertujuan untuk mempelajari respon pertumbuhan vegetatif dan produksi terhadap pupuk N dan P, serta menentukan dosis optimal pupuk N dan P pada kelapa sawit umur tiga tahun. Penelitian dilaksanakan di blok I, Kebun Pendidikan dan Penelitian Kelapa Sawit Jonggol IPB-Cargill, Kecamatan Jonggol, Kabupaten Bogor. Penelitian ini terdiri atas dua percobaan terpisah yaitu peran pupuk nitrogen dan peran pupuk fosfor . Rancangan percobaan menggunakan rancangan kelompok lengkap teracak (RKLT) satu faktor yaitu dosis pemupukan. Pupuk nitrogen meningkatkan tinggi tanaman, panjang pelepah, lingkar batang, dan luas daun secara quadratik. Dosis optimum pupuk N pada tanaman kelapa sawit umur tiga tahun adalah 572 g N tanaman-1 semester-1. Pupuk fosfor meningkatkan panjang pelepah, lingkar batang, dan kadar unsur hara P pada daun ke-17 secara quadratik. Dosis optimum pupuk P pada tanaman kelapa sawit umur tiga tahun adalah 464 g P2O5 tanaman-1 semester-1.
Pengelolaan Pemetikan Tanaman Teh (Camellia Sinensis (L.) O. Kuntze) di Unit Perkebunan Tambi, Kabupaten Wonosobo, Jawa Tengah
Authors: Maulia Kantrin , Supijatno .
Published: April 2020

Kegiatan penelitian dilaksanakan selama empat bulan mulai Februari hingga Juni 2016 di Unit Perkebunan Tambi. Tujuan dari kegiatan penelitian adalah memperluas pengetahuan mengenai budidaya teh, menambah pengalaman, dan mempelajari pengelolaan pemetikan pada tanaman teh di Unit Perkebunan Tambi. Metode yang dilakukan pada saat penelitian yaitu menggunakan metode langsung (data primer) dan metode tidak langsung (data sekunder). Pemetikan jendangan dilakukan ketika tanaman berumur 3 bulan setelah pangkas dan persentase tunas dengan tinggi lebih dari 15 cm mencapai 77.97%. Tinggi bidang petik mencapai 67.9-100.6 cm. Kapasitas petik mencapai 82.39 kg/HK dan tidak dipengaruhi oleh usia serta lama pengalaman kerja. Gilir petik berkisar 40-50 hari. Tenaga petik sebanyak 147 orang. Petikan halus 1.84%, petikan medium 43.12%, petikan kasar 26.34% dan petikan rusak 28.87%. Analisis pucuk Memenuhi Syarat (MS) 47%-49% dan pucuk Tidak Memenuhi Syarat (TMS) 50%-52% sehingga perlu ditingkatkan agar tidak hanya menghasilkan kuantitas pucuk yang tinggi namun kualitas pucuk juga tinggi.
Manajemen Panen Kelapa Sawit (Elaeis guineensis Jacq.) di Kebun Sei Lukut, Siak, Riau
Authors: Harahap Zul Adhri , Hariyadi .
Published: April 2020

Penelitian ini dilaksanakan di Kebun Sei Lukut, First Resources Group yang terletak di Desa Maredan Barat, Kecamatan Tualang, Kabupaten Siak, Provinsi Riau dari bulan Maret sampai Juni 2016. Kegiatan penelitian ini bertujuan untuk meningkatkan pengetahuan, memperoleh pengalaman dan keterampilan kerja tentang budidaya kelapa sawit khususnya dalam manajemen panen. Pengamatan yang dilakukan meliputi angka kerapatan panen, taksasi panen harian, kapasitas panen, tenaga kerja panen, evaluasi panen, sarana dan prasarana panen, dan manajemen transportasi panen. Kebun Sei Lukut secara umum telah melaksanakan prosedur kerja secara baik pada setiap kegiatan budidaya kelapa sawit seperti pada kegiatan pemanenan. Permasalahan dalam kegiatan panen yang ditemukan di Kebun Sei Lukut yaitu, persentase pemakaian alat pelindung diri yang rendah, dan kapasitas panen masih dibawah standar perusahaan.