System In Order Research Articles

The CEP-Conep System in 2020: confronting COVID-19, challenges and lessons learned.

This paper presents the structuring dimensions of the CEP-Conep System in order to understand the actions promoted by the National Research Ethics Commission in response to demands for the processing and ethical analysis of research protocols related to COVID-19 in 2020. Based on CEP-Conep System public documents, an assessment of legislation, from 1988 to 2020, and its extension in terms of the number of Committees, users, and protocols, from 2012 to 2020 was presented. The minutes of Conep's Ordinary Meetings (RO), for 2020, of a confidential nature, were analyzed, to verify adaptations to the pandemic. At the end of 2020, the System had 844 Committees, 854,741 users, and 701,791 analyzed protocols. The Commission centralized the analysis of COVID-19 protocols, in January 2020, and promoted three decentralizations, as more knowledge was generated, with vaccine protocols for COVID-19 remaining centralized. The history of the CEP-Conep System provided ballast for the adoption of management, educational and communication measures that accelerated the approval of protocols and made the process transparent. The absence of indicators made it impossible to evaluate the performance in 2020, which was apparently satisfactory.

Present Situation and Future Prospects of Motor Cooling System

Background: The motor cooling system is mainly used in aerospace, automotive, and marine fields, where the motor system is cooled to extend the service life and safety of the motor. The running power of motors rises too fast, which leads to the failure of heat dissipation as expected and shortens the service life of motors. Therefore, it is necessary to choose an appropriate cooling mode for motors to improve their cooling structure, reduce their temperature rise, and improve their reliability and service life. The internal motor cooling system can perform fixed-point heat dissipation, but the overall heat dissipation is poor. The external motor cooling system can perform overall heat dissipation but has high requirements on the structure. Over the years, the application and development of motor cooling systems have gained more and more attention. Objective: This paper discusses the structural characteristics, advantages, and development trends of the motor cooling system in order to reduce the temperature rise of the motor and improve its reliability and service life. This paper aims to provide an overview and systematic guidance for future designs of the motor cooling system. Methods: According to the structural characteristics of the motor cooling system and the requirements of the motor application field, the most typical internal cooling system and external cooling system in the motor cooling system are summarized. Results: By analyzing the causes and hazards of motor heating, the limited requirements of the motor system in use are summarized. The motor system is classified and compared based on the structure, heat dissipation principle, and use of the motor heat dissipation system. The characteristics of small volume and strong heat dissipation ability are also summarized. Based on the analysis of the internal and external cooling system, the problems of complex structure and poor cooling effect are summarized, and the future development trend and direction of the motor cooling system are discussed in detail. Conclusion: This paper divides the motor cooling system into an internal cooling system and an external cooling system according to the specifications and operating environment. This paper expounds on internal and external cooling systems' different principles, advantages, and disadvantages. This paper summarizes the cooling systems in recent years in order to facilitate their subsequent development and use. The main components of additional patents for future inventions are motor cooling systems, innovation in structure simplification, and cost performance optimization.

РЕСОЦИАЛИЗАЦИЯ ОСУЖДЕННЫХ, ОСВОБОЖДЕННЫХ И ОСВОБОЖДАЕМЫХ ИЗ МЕСТ ЛИШЕНИЯ СВОБОДЫ (НА ПРИМЕРЕ УФСИН РОССИИ ПО КАЛИНИНГРАДСКОЙ ОБЛАСТИ)

The purpose of studying the experience of the resocialization of persons who have served a custodial sentence is to identify problems that exist in the organization and implementation of this work by institutions and bodies of the penal enforcement system, consider best practices and formulate conclusions and proposals. Currently, there is no any notion of resocialization in the penal enforcement legislation, however, in some normative legal acts, in particular, in the Federal Law №. 182 «On the basics of the crime prevention system in the Russian Federation» (23 June 2016), resocialization is understood as a set of socio-economic, pedagogical and legal measures carried out by subjects of crime prevention in accordance with their competence and persons involved in crime prevention in order to reintegrate into society persons who have served a criminal sentences in the form of imprisonment and (or) those who have been subjected to other criminal law measures. The importance of the process of resocialization of persons released from prison is inexorably emphasized by statistical figures. Thus, about 60 % of those, who have committed crimes, do it again, and one in three has already been punished. On January 1st, 2024, the Federal Law «On Probation in the Russian Federation» came into force, which specifies the resocialization, social adaptation and social rehabilitation of persons released from prison as the main directions of probation. Currently, the process of developing and adopting sublegislative acts is underway. However, the existing positive experience of some regions in organizing this work should be counted. In the article the author examines the practice of the Federal Penitentiary Service of Russia in the Kaliningrad region. The author concludes that it is necessary to analyze and generalize the practices of various regions and develop a unified approach to this area of activity of the penal enforcement system in order to streamline it.

Hamilton energy, competitive modes and ultimate bound estimation of a new3D chaotic system, and its application in chaos synchronization

Abstract This paper discusses the dynamical behavior of a new 3D chaotic system of integer and fractional order.
To get a comprehensive knowledge of the dynamics of the proposed system, we have studied competitive
modes and Hamilton energy for different parameter values. In order to get the ultimate bound set for the
proposed system, we employed the Lagrange coefficient approach to solve the optimization problem.
We have also explored the use of the bound set in synchronization. Furthermore, we have examined the
Hamilton energy, time series, bifurcation diagrams, and Lyapunov exponents for the fractional version of
the proposed chaotic system. Finally, we looked at the Mittage-Leffler positive invariant sets and global
attractive sets by merging the Lyapunov function approach with the Mittage-Leffler function. Numerical
simulations have shown the obtained bound sets and other analytical outcomes.

New approach to researching the development level of the creatosphere in human-centered economy in Russia

Objective: to develop conceptual provisions of human-centered economy by forming a new approach to the study of the creatosphere as a constituent element of the said economic system in order to develop its management. Methods: analysis, synthesis, content analysis, scheme of contradiction, linear scaling method, minimax normalization. Results: the characteristic of the creatosphere of the human-centered economy is revealed from the viewpoint of satisfying the individual’s needs in creativity; the creatosphere structure is analyzed as an element covering all spheres of the economic system under consideration; the model of homeostasis of the human-centered economy is developed through identifying its elements-opposites (on the one hand – natural and material spheres, services, social sphere, infosphere, digital and cognitive spheres, on the other hand – creatosphere), as well as the model of the basic resource (flow of ideas) and regulator (human needs); the predetermining role of the creatosphere in the development of the said economic system is outlined; the contradictions are revealed at the level of human-centered economy, the resolution of which contributes to the development of an individual and the economic system as a whole. Scientific novelty: it consists in the development of a methodology for assessing the creatosphere and testing it on the Russian subjects. Unlike those available in the literature, the methodology allows comprehensively assessing the creatosphere development as an element that affects the human-centered economy as a whole. The novelty consists also in defining a vector in the creatosphere management based on the formed approach to its research through the upscaling of best regional practices. Practical significance: the results of comprehension of the human-centered economy creatosphere through the scheme of contradictions may serve as a basis for further research in order to build a scientifically sound theory of the said economic system and to form directions for resolving the identified contradictions. The study results are the basis to further define the development level of the Russian human-centered economy in order to develop measures for its effective management.

Voltage regulation and energy loss minimization for distribution networks with high photovoltaic penetration and EV charging stations using dual-stage model predictive control

The widespread integration of photovoltaic (PV) units and controllable loads like electric vehicles (EVs) might cause uncertain voltage fluctuations quite frequently. The reactive power from distributed generation (DG) units and EV charging stations (EVCSs) can effectively be used along with conventional devices like on-load tap changer (OLTC) to successfully control network voltages in real-time, with multi-time scale coordination. However, the control of a large number of available resources, with reliable communication among them becomes a complex task. Moreover, the substantial real-time data set amassed through the deployment of measurement devices across the network increases both cost and computational intricacies. This paper presents a novel approach, employing a time decomposition-based dual-stage model predictive control (MPC) with a reduced model control framework for voltage control and energy loss minimization in active distribution networks (ADNs), by significantly reducing the number of measuring devices. A minimum global set of available control resources is identified for real-time control, aiming to mitigate control complexity and minimize the demand for heavy communication. The proposed control strategy is validated on the 33-bus distribution network and modified IEEE 123-bus distributed network, under high PV penetration and EV charging stations. It is seen that the proposed reduced model framework with very limited measuring devices and control equipment can effectively regulate the voltages with a standard deviation of 0.0059 p.u. and 0.0035 p.u. as compared to the full order system model, for 33-bus network and IEEE 123-bus network, respectively. Furthermore, there is a net 23.24% reduction in energy losses when power loss minimization is considered along with the minimization of voltage deviations in the 33-bus network.

A Fast Multi-Scale of Distributed Batch-Learning Growing Neural Gas for Multi-Camera 3D Environmental Map Building

Biologically inspired intelligent methods have been applied to various sensing systems in order to extract features from a huge size of raw sensing data. For example, point cloud data can be applied to human activity recognition, multi-person tracking, and suspicious person detection, but a single RGB-D camera is not enough to perform the above tasks. Therefore, this study propose a 3D environmental map-building method integrating point cloud data measured via multiple RGB-D cameras. First, a fast multi-scale of distributed batch-learning growing neural gas (Fast MS-DBL-GNG) is proposed as a topological feature extraction method in order to reduce computational costs because a single RGB-D camera may output 1 million data. Next, random sample consensus (RANSAC) is applied to integrate two sets of point cloud data using topological features. In order to show the effectiveness of the proposed method, Fast MS-DBL-GNG is applied to perform topological mapping from several point cloud data sets measured in different directions with some overlapping areas included in two images. The experimental results show that the proposed method can extract topological features enough to integrate point cloud data sets, and it runs 14 times faster than the previous GNG method with a 23% reduction in the quantization error. Finally, this paper discuss the advantage and disadvantage of the proposed method through numerical comparison with other methods, and explain future works to improve the proposed method.

Exploring the dynamical evolution of Cepheid multiplicity in star clusters and its implications for B-star multiplicity at birth

Classical Cepheid variable stars provide a unique probe of binary evolution in intermediate-mass stars over the course of several tens to hundreds of Myr. In addition, understanding binary evolution with the inclusion of cluster dynamics is desirable for obtaining a more complete picture of these stars, especially as they play a vital role in distance determinations. We studied the binary and multiple properties of Cepheids, assuming that all mid-B stars form in binaries inside star clusters. We also estimated the birth multiplicity of mid-B stars by comparing the observed multiplicity statistics of Cepheids with models based on particular assumptions. The clusters were modelled with the code, including synthetic stellar and binary evolutionary tracks. The Cepheids were identified from their position on the Hertzsprung-Russell diagram. The dynamical cluster environment results in a higher binary fraction among the Cepheids that remain in star clusters ($ 60$<!PCT!>) than among the Cepheids which have escaped to the field ($ 35$<!PCT!>). The fraction of Cepheids in triples ($ 30$<!PCT!> and $ 10$<!PCT!> in clusters and field, respectively) follows the same trend. In clusters, the binary, triple, and multiple fraction decreases with increasing cluster mass. More massive clusters have binaries of shorter orbital periods than lower mass clusters and field Cepheids. Mergers are very common with $ 30$<!PCT!> of mid-B stars not evolving to Cepheids because of the interaction with their companion. Approximately $40$ <!PCT!> of Cepheids have merged with their companion, and the merger event impacts stellar evolution, so that $ 25$<!PCT!> of all Cepheids occur at an age by more than $40$<!PCT!> different than what would be expected from their mass and the current cluster age; the expected age of Cepheids can differ from the age of their host cluster. Our models predict that one in five Cepheids is the result of a merger between stars with mass below the lower mass limit for Cepheids; in clusters, these objects occur substantially later than expected from their mass. Approximately $10$<!PCT!> of binary Cepheids have a different companion from the zero-age main sequence (ZAMS) one, and $ 3$ to $5$<!PCT!> of all Cepheids have a compact companion ($ 0.15$ <!PCT!> of all Cepheids are accompanied by a black hole). The binary fraction derived from our simulations (42<!PCT!>) underestimates the observed binary Cepheid fraction by approximately a factor of 2. This suggests that the true multiplicity fraction of B-stars at birth could be substantially larger than unity and, thus, that mid-B stars may typically form in triple and higher order systems.

ATLAS Level-0 Muon Barrel Trigger system status and integration tests for Phase-II

In preparation for the High-Luminosity Large Hadron Collider (HL-LHC), essential upgrades are underway for the ATLAS Level-0 Barrel Muon Trigger system in order to cope with the higher data rates and radiation level. These enhancements involve incorporating a new inner layer of Resistive Plate Chambers detectors (RPCs), and replacing the trigger and readout electronics, using a novel Data Collector and Transmitter (DCT) and new Sector Logic (SL) boards. DCT boards collect and process RPC data, while SL boards execute the trigger algorithm and transmit the muon candidates to the Central Trigger Processor.This paper presents the current status of the Phase-II Muon Barrel Level-0 Trigger system, focusing on the DCT and SL hardware and firmware developments. We detail the design and testing processes. Results from data communication tests and ongoing developments are also discussed.

Experience of Conducting Debriefing in the Process of Mastering Standard Operating Procedures Among Students of Kazan State Medical University

Standard operating procedures (SOPs) are documents that contain step-by-step instructions for performing a particular procedure (manipulation). Undoubtedly, the quality of training of doctors must meet the requirements of the healthcare system in order to provide medical care of the proper quality. At the same time, the precise implementation of nursing manipulations in accordance with SOPs is a very urgent task. In this regard, the debriefing technique used in classes in a simulation center can improve the existing skills and knowledge of students

Classifications of bosonic supersymmetric third and fifth order systems

This manuscript explores the extensions and classifications of the bosonic supersymmetric systems. For the third order bosonic superfield equations, four types of integrable supersymmetric extensions are identified, including the B-type (trivial) supersymmetric modified Korteweg–de Vries equation, the supersymmetric Sharma–Tasso–Olver equation, and an A-type (non-trivial) supersymmetric potential Korteweg–de Vries equation. In the case of the fifth order bosonic supersymmetric systems, nine kinds of extensions are discovered, with six being B-type and three being A-type. Notably, several equations such as the supersymmetric Sawada–Kotera equation, the supersymmetric Kaup–Kupershmidt equation and the supersymmetric Fordy–Gibbons equation are classified as B-type extensions. Despite this classification, these supersymmetric systems are shown to be connected to linear integrable couplings. The findings have implications for various fields including string theory and dark matter and highlight the importance of understanding bosonic supersymmetric systems. The obtained supersymmetric systems are solved via bosonization method. Applying the bosonization procedure to every one of supersymmetric systems, one can find various dark equation systems. These dark equation systems can be solved by means of the solutions of the classical equations and some graded linear couplings including homogeneous and nonhomogeneous symmetry equations.

Investigation of circularly polarized MIMO antenna with enhanced isolation for sub-6 GHz application

This article demonstrates the design process for a unique, two-port, circularly polarized (CP) multiple input multiple outputs (MIMO) antenna for fifth-generation (5G) applications operating at sub-6 GHz. The proposed 2-port CP MIMO antenna comprises a patch antenna with a distinctive slot and a circular split ring resonator (SRR) at the ground plane. The circular patch antenna’s resonant frequency is moved to a lower frequency by the addition of a circular SRR at the ground plane. Investigating a special slot at the patch antenna can help in the enhancement of circular polarization and bandwidth. A sequence of parasitic elements in the shape of ‘h’ is placed in the space between the two antenna elements for decoupling. The minimum 20 dB inter isolation among the antenna elements in the proposed 2-port CP MIMO antenna’s operating band is made possible by these h-shaped parasitic elements. In addition, to ensure the proposed antenna is more reliable for 5G applications at sub-6 GHz, other diversity parameters including Envelop Correlation Co-efficient (ECC), Mean Effective Gain (MEG), Diversity Gain (DG), TARC (Total Active Reflection Co-efficient) and CCL (channel capacity loss) are also calculated . In comparison to existing MIMO systems of the same order, the proposed 2-port CP MIMO antenna appears to have the minimum channel capacity loss and excellent diversity performance. The proposed 2-port CP MIMO antenna achieves an impedance bandwidth of 3.3 to 3.6 GHz with impedance matching better than 10 dB and has an axial ratio bandwidth of 3.35 to 3.51 GHz with a steady radiation pattern in both planes over the operating frequency bands.

Two-Level Approach for Simultaneous Component Assignment and Layout Optimization with Applications to Spacecraft Optimal Layout

Optimal layout problems consist in positioning a given number of components in order to minimize an objective function while satisfying geometrical or functional constraints. Such kinds of problems appear in the design process of aerospace systems such as satellite or spacecraft design. These problems are NP-hard, highly constrained and dimensional. This paper describes a two-stage algorithm combining a genetic algorithm and a quasi-physical approach based on a virtual-force system in order to solve multi-container optimal layout problems such as satellite modules. In the proposed approach, a genetic algorithm assigns the components to the containers while a quasi-physical algorithm based on a virtual-force system is developed for positioning the components in the assigned containers. The proposed algorithm is experimented and validated on the satellite module layout problem benchmark. Its global performance is compared with previous algorithms from the literature.

The employment, retention and exit of public school teachers in New Brunswick, Canada: an analysis using linked administrative data

ObjectiveAs in many jurisdictions, New Brunswick (Canada) is facing increasing shortages of K-12 school teachers as retirements loom at the same time that the school age population of NB continues to exceed long term trends. The purpose of this retrospective study is to analyze the recruitment, retention and exit decisions of teachers in the NB public education system in order to support ongoing planning around teacher staffing. ApproachThe analysis uses a unique linked administrative data combining province-wide individual-level teacher employment data, immigration records, university graduation data and public health insurance registration on NB teachers and individuals who obtained a B.Ed. degree in NB. Data are accessed through the secure facilities of the NB Institute for Research, Data and Training. The analysis includes both descriptive statistics and econometric methods appropriate to the particular outcomes of interest. ResultsThe analysis will present results on three types of labour market transitions: 1) from NB university education to employment as a NB teacher. 2) exits from employment as a teacher, including both retirement and pre-retirement exits, and 3) decisions of ex-teachers about remaining in NB. The potential effects of a range of demographic, geographic and system-level factors on these outcomes are considered. Conclusions and ImplicationResults from the analysis of entry to and exit from K-12 teaching in NB will be vital to human resource planning for a province dealing with looming retirements, growing labour shortages and an increasing population. Future work will consider subject-specific teacher shortages in critical fields like STEM.

Intraoperative monitoring of visual evoked potentials: experience of 240 operations

Background. Intraoperative monitoring (IOM) of visual evoked potentials (VEPs) is used to inform surgeons about impacts on the visual system in order to prevent iatrogenic visual impairment. The VEP monitoring use become widespread only in the last decade; nowadays, there is no generally accepted methodology for its implementation, and the effectiveness of VEP monitoring and the factors determining it have not been sufficiently studied.Aim. The aim of the study was to investigate the factors influencing the VEP monitoring feasibility and effectiveness.Materials and methods. Data from 240 consecutive neurosurgical operations performed using VEP monitoring were retrospectively reviewed. IOM data (registration parameters, presence and type of VEP changes), patient characteristics (gender and age, tumor type and location, presence of preoperative visual dysfunctions), anesthesia parameters and postoperative changes in vision were studied. Statistical analysis was performed using χ2 and Mann–Whitney tests.Results. VEPs were obtained in 91.3 % of eyes with completely or partially preserved vision. The main factors reducing the chances to record VEPs successfully are preoperative visual disorders and the use of inhalation anesthesia. A personalized approach to the selection of reference electrodes and frequency filtering parameters makes it possible to reduce the number of averagings required for VEP recording and accelerate informing surgeons. With successful monitoring 59.1 % of eyes had no noticeable VEP changes; 5.8 % of eyes had signs of intraoperative improvement; 35.1 % had signs of deterioration. Among the last category, 60.7 % of eyes had full VEPs recovery afterwards. After surgery, new visual disorders were detected in 2.6 % of eyes without signs of intraoperative deterioration, in 6.7 % – with temporary deterioration, and in 19.3 % – with signs of deterioration persisted until IOM is finished. Assessing the sensitivity and specificity of VEP monitoring is hampered by the possibility of complications in the early postoperative period and IOM influence on the course and results of the operation. The proportion of total resections was maximal when VEP monitoring was successful. In the subgroup without preoperative visual impairments, the alarms during monitoring were associated with decrease in proportion of total resections proportion due to increase in proportion of subtotal resections.Conclusion. VEP monitoring with a personalized approach allows effective monitoring of visual functions preservation during neurosurgical operations.

Организационные аспекты мониторинга беременных в Тульской области.

In recent decades, there has been an increasing use of modern technologies and information systems in order to increase the accessibility, effectiveness and quality of medical care. The issue of organizing medical care using digital technologies in the Tula region is relevant. The purpose of the study is to determine the main organizational aspects of the work of the situational center of the Tula Regional Perinatal Center named after V. S. Gumilyovskaya for monitoring pregnant women. Materials and methods. The structure and mechanisms of operation of the situational center of the GUZ «TOPTS named after V. S. Gumilyovskaya» are analyzed. Research methods: empirical, analytical, descriptive. Results. The situation center inside the perinatal center represents a new direction, where the collection, visualization and processing of data from various services play a crucial role in optimizing and improving the level of medical care for pregnant women registered in the regional women’s clinics. One of the main pillars is such a division of the perinatal center as the obstetric remote consultation center. In addition to the ADCC, the situation center receives data on the state of the service from the regional information subsystem for monitoring maternity care in the Tula region (RISAR) and reports from the BARS-Web-Vaults information and analytical system. The main visualization tool obtained from all data sources used by the situation center is a component of the information and analytical system of the Situation Center of the Governor of the Tula Region interactive analytical panels with a graphical interface – dashboards. Conclusion. Creation of a situation center in the State Institution «TOPC named after. V. S. Gumilevskaya» is designed to increase the efficiency of the obstetrics and gynecology service in the region through the prism of modern technologies. The combination of modern technologies and medical knowledge in the situation center makes it a relevant tool for improving medical care for pregnant women and newborns, providing medical institutions with solutions based on advanced information technologies and data analytics. The introduction of a situation center made it possible to reduce the number of errors in routing pregnant women at the regional level.

Seasonal Variations in Physico- chemical Parameters of the Sediment of Thengapatnam Estuary, South-coastal Region of India

The tremendous biodiversity and ecological processes that depend on freshwater and marine environments are essential to human survival. The physicochemical parameters in both surface waters and sediments are important to understand estuarine dynamics. The present study was carried out to determine how the seasonal variation will affect the physicochemical parameters of sediments of five stations in Thengapatnam estuary. Sediment samples were collected for a period of one year from June 2014-May 2015 from five different sampling stations. The parameters such as pH, temperature, Nitrogen, Phosphorous, Potassium, Copper, Zinc, Iron and Manganese were analysed using standard procedures. The result expose that, soil sediment have high amount of potassium in all five stations. Sediment temperature varied from 25.7- 30.1°C. Hydrogen ion concentration ranged between 6.9 to 8.3, concentrations of nutrients viz. nitrate (2.4 – 6.4 mg/100g), phosphate (1.5 - 15.25 mg/100g) potassium (138 – 560 ppm) and concentration of metals like iron, zinc and manganese were found to be higher during monsoon season and lower during premonsoon seasons The overall findings highlight the need for a scientific solution to reduce the use of harmful chemicals and heavy metal contamination from the river system in order to preserve the biodiversity of freshwater and marine ecosystems.

Analisis Kesiapan UMKM dalam Implementasikan SAK EMKM: Studi Kasus UMKM Mitra Alfamart di Karawang

The development of MSMEs is very important for the progress of the Indonesian economy, however, MSMEs face several obstacles in their development, such as not having employees who are experts in their fields and lack of knowledge about how to make financial reporting in accordance with applicable standards (SAK EMKM). The purpose of this study is to determine whether Alfamart's partner MSMEs in Karawang are aware of the issuance of SAK EMKM, have adequate human resources, accrual basis accounting recording system, and whether they have adopted the concept of a business entity. Six business actors who work with Alfamart partners are the subjects of observation, interviews, and documentation in this study, which uses descriptive qualitative research methodology. The data analysis method developed by miles and huberman is data collection, data reduction, data presentation and conclusion drawing. Six different informants were used in source triagulation used for data validity testing. The results of the study state that the majority of business actors who work with alfamart partners are not ready to implement SAK EMKM. This is due to the lack of understanding in the accounting recording system in order to make financial records based on SAK EMKM and not knowing the issuance of SAK EMKM, not having adequate human resources, the accounting recording system applied is still on a cash basis not accrual basis and adopts the concept of a business entity.

Transformasi Tatanan Hukum dan Demokrasi: Analisis Perubahan Struktural Pasca Reformasi

This research aims to examine the transformation of the level of law and democracy after the Indonesian reformation, of course after independence Indonesia experienced many structural changes from the pre-Reformation era to the post-reformation era. At all times, Indonesia has always tried to develop and improve Indonesia’s structural order, so this research uses two problem formulations, namely how the legal order in post-reformation Indonesia is and how democracy is implemented in post-reformation Indonesia. This research is qualitative research with a normative juridical approach. The results of this research show that the legal order in Indonesia after the 1998 reform, Indonesia experienced significant changes in its legal order and democratic system. The following are the main points related to several things, namely the constitution, government system, elections and political parties, legal developments, human rights protection, and regional autonomy. Overall, post-reform, Indonesia has moved towards a more mature democratic system with improvements in the legal order, more open elections, and increased protection of human rights.

Promotion on the thermal and mechanical behaviors of epoxy resin using phthalonitrile and functionalized‐SiO2

AbstractThe phenolic‐type phthalonitrile (PN) was added to EP/DDM system in order to enhance the thermal and mechanical performance at high temperature. The influence of the added PN on the curing process of EP/DDM was studied via DSC and the activating energy (Eα) was calculated based on iso‐conversional method. The Eα values corresponding to EP/DDM crosslink reaction remained at about 60 kJ mol−1 while it dramatically increased to 68.2 kJ mol−1 when PN content reached 50 wt% (EP‐PN50). The Tg and char yield at 700°C in N2 increased from141°C, 25.7%, for the neat EP/DDM to 226°C, 68.7% for the EP‐PN50. The measured char yields of the cured blend were higher than the calculated values which implies the interaction between EP/DDM and polyphthalonitrile network. The tensile and bending tests were carried out at 413 K and the modulus of EP‐PN50 remains 2.3 Gpa. On the meantime, the cyano‐functionalized SiO2 (CNSiO2) was prepared to further promote the mechanical behaviors of this resin blend in high temperature. The contact angles of raw SiO2, KH560SiO2, CNSiO2 with EP‐PN50 are 59.3, 52.6, 49.7°, respectively, which confirms the better wettability of CNSiO2 to the EP/PN blend. Furthermore, the tensile and bending tests conducted at 413 K confirmed that the CNSiO2 was more efficient on enhancing the mechanical performance of this EP/DDM/PN system at high temperature.