bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Robusta Coffee (Coffea Canephora) on the Degree of Acidity (pH) of Saliva
Authors:   Department of Oral Biology, Faculty of Dentistry, Prof. Dr. Moestopo (Beragama) University, Jakarta, Oktanauli Poetry , Patricia Zikir Azyyati ,   Department of Oral Biology, Faculty of Dentistry, Prof. Dr. Moestopo (Beragama) University, Jakarta, Taher Pinka ,   Department of Oral Biology, Faculty of Dentistry, Prof. Dr. Moestopo (Beragama) University, Jakarta, Herawati Margaretha ,   Department of Oral Biology, Faculty of Dentistry, Prof. Dr. Moestopo (Beragama) University, Jakarta, Sean Martin ,   Student, Faculty of Dentistry, Prof. Dr. Moestopo (Beragama) University, Jakarta
Published: May 2023

Background: saliva is a complex fluid produced by the salivary glands and plays an important role in maintaining oral health. Saliva consists of 98% - 99% water, about 2% is composed of organic & inorganic components, electrolytes, and various enzymes. Robusta coffee (Coffea canephora) has the main content of caffeine, carbohydrates, protein and free amino acids, and chlorogenic acid. The content in the coffee can cause changes in the level of saliva acidity (pH). Purpose: to better understand the effects of robusta coffee (Coffea canephora) against level of saliva acidity (pH). Method: based on the exclusion and inclusion criteria, a total of fifteen (15) journals were analyzed from the Google Scholar, Science Direct, PubMed’s and NCBI. The journals that analyzed are regarding an article that discusses the effect of coffee on salivary pH. Conclusion: this review reveals that robusta coffee (Coffea canephora) causes a decrease in the acidity (pH) of saliva. This happens due to the higher the concentration of the coffee, the pH of the coffee becomes more acidic, but there are several studies reports that low concentrations of robusta coffee (Coffea canephora) do not cause a decrease in salivary pH.
Survival Rate, Disease Incidence, and Yield of Shallots by Seed Priming and Application of Tithonia Compost Enriched with Gliocladium virens
Authors:   Agrotechnology Master Program, Agriculture Faculty, Hasanuddin University, Makassar, South Sulawesi, Indonesia., Faried Muhammad , Syam’un Elkawakib ,   Agrotechnology Study Program, Department of Agronomy, Agriculture Faculty, Hasanuddin University, Makassar, South Sulawesi, Indonesia., Mantja Katriani ,   Agrotechnology Study Program, Department of Agronomy, Agriculture Faculty, Hasanuddin University, Makassar, South Sulawesi, Indonesia.
Published: May 2023

This study aimed to evaluate the effects of seed priming with Moringa leaf extract (MLE) and the application of Tithonia compost enriched with Gliocladium virens on survival rate, disease incidence, and yield components of shallot. This research was carried out from September to December 2022 at the Teaching Farm, Faculty of Agriculture, Hasanuddin University. The study was conducted with a factorial design of two factors with three replications. The first factor was seed priming, consisting of unprimed hydropriming, 12.5% MLE, 25% MLE, and 37.5% MLE. The second factor is the dose of compost, composed of 0 t/ha, 5 t/ha, 10 t/ha, and 15 t/ha. All data were evaluated using analysis of variance (ANOVA) and Tukey’s multiple means comparison to determine statistical differences between treatments at the 95% confidence level. The results showed that seed priming with MLE and Tithonia compost enriched with Gliocladium virens affected the percentage of surviving seedlings after transplanting. Alone, seed priming with MLE at a concentration of 37.5% and application of Tithonia compost at a dose of 15 t/ha had the best effect on the number of bulbs per plant, bulb weight, bulb diameter and bulb production. Furthermore, adding Tithonia compost enriched with Gliocladium virens reduced the incidence of Fusarium wilt. As a result, the use of MLE as a priming agent and the addition of Tithonia compost enriched with Gliocladium virens is recommended.
Name-It-And-Know-It Technique in Maximizing Learners’ Participation in Filipino 3
Authors:   Mariano Marcos State University, Philippines, Cayaban Allieah Kay , Lista Queenie Nicolle A. ,   Mariano Marcos State University, Philippines, C. Nacapuy Kaylene Mae ,   Mariano Marcos State University, Philippines, V. Pagdilao Deshirie Nicole ,   Mariano Marcos State University, Philippines, Quines Apple S. ,   Mariano Marcos State University, Philippines, Rivera May Flor C. ,   Mariano Marcos State University, Philippines
Published: May 2023

Game-based learning has been confirmed as a child’s developing emergent participation in the Filipino language. A game-based approach is critical in managing children who have lost interest in joining a Filipino class. This study aimed to improve the level of participation of the Grade 3 pupils using the Name-It and Know-It technique. This study was conducted on the Grade 3-Mabait of MMSU-LES during the Second Semester, A.Y 2021-2022. The pre-observation and post-observation results were statistically analyzed using the t-test. The computed p-value (0.0007) is much lower than the significance probability level. This indicates that the level of participation of the pupils in Filipino has improved significantly. The Name-It and Know-It technique was used in this study to increase the level of involvement of Grade III students in their Filipino lessons. The responders were given a variety of exercises, including visual hints, sound identification, and adding and subtracting syllables. The Name-It and Know-It technique helps respondents strengthen their Filipino vocabulary. The Name-It and Know-It is an instructional support strategy for unlocking difficulties in Filipino. The Name-It and Know-It Technique is an effective and efficient intervention that increases grade 3 pupils’ engagement in the Filipino subject. Thus, the longer respondents are exposed to the intervention, the greater their probability of enhancing their degree of engagement in their Filipino class.
Fire Safety Management Strategies in Selected Markets of Lusaka City
Authors:   The University of Zambia, Mubita Kaiko , Milupi Inonge ,   The University of Zambia, Kalimaposo Kalisto ,   The University of Zambia
Published: May 2023

This study investigated the effectiveness of fire safety management strategies in selected markets of Lusaka city. The study employed a descriptive research design, which involved qualitative data collection and analysis. The study used purposive sampling to select markets and participants for the study. A total of 2 markets. From each market, 10 marketeers were sampled conveniently. 2 market managers were also sampled purposefully. The study collected data using two main methods: Focus Group Discussions (FGD) and in-depth interviews. The marketeers were interviewed individually and FGD guide was further administered to get more insights. This was meant to collect opinion and insights that could not be collected during interviews. The in-depth interviews were conducted with a subset of the participants to obtain more detailed and nuanced information. The data collected from the in-depth interviews and FGD were analyzed using thematic analysis to identify patterns and themes in the data. The findings of the study indicated that effective fire safety management in markets required a combination of proactive measures and emergency preparedness. Proactive measures included regular risk assessments, proper storage of flammable materials, regular maintenance of electrical systems, and the installation of fire safety equipment such as alarms and sprinklers. Emergency preparedness strategies included the creation of emergency evacuation plans, the establishment of communication protocols, and the training of market staff on fire safety procedures. The study also found that collaboration between market management, vendors, and local fire departments is crucial to effective fire safety management in markets. The study highlights the need for ongoing education and training for vendors and market staff to maintain awareness of fire safety hazards and emergency response procedures. It also underscores the importance of regular reviews and updates of fire safety management plans to ensure they remain effective and relevant. Overall, the study provides valuable insights into effective fire safety management strategies in markets, and emphasizes the need for continued attention and investment in fire safety management to protect people, property, and businesses from the devastating effects of fires.
The Effects of Attraction, Promotion and Accessibility on Revisiting Intention to Tana Toraja, South Sulawesi, Indonesia
Authors: Wahim Isdar , Chu Jui-Yuan , Huynh-Cam Thao-Trang
Published: May 2023

This study aims to determine the effect of attraction, promotion, and accessibility on revisiting intention to Tana Toraja, a mountainous region in South Sulawesi Province, Indonesia. The data was obtained from a total of 357 respondents who were domestic tourists and chosen randomly to answer a questionnaire in various public places. Regression analysis showed that the attraction, promotion, and accessibility have positive effects on tourists’ revisit intention to Tana Toraja, South Sulawesi, Indonesia. The output from the objective variable analysis can have good implications for the increase in tourist visits to Toraja in the current pandemic situation. From the samples collected, it was found that the average tourist who had visited Tana Toraja was 4.65, which means that these tourists have a strong intention to return to visit.
Effect of pre-germination treatments on seed germination of Passiflora setacea DC (Passifloraceae)
Authors: Salomão Antonieta Nassif , José Solange Carvalho Barrios Roveri , Santos Izulmé Rita Imaculada
Published: May 2023

setacea seeds without aril, were submitted to pre-germination treatments: T1(control); T2 (pre-soaking in Promalin® solution [gibberellin (GA4+7) + N-(phenylmethyl)-1H-purine 6-amine (6-benzyladenine) both at a concentration of 18.8 g.L-1] in bainMarie, 45 °C/20 min.; T3 (osmopriming with KNO3 at a concentration of 2.6g.L-1 H2O, 25 °C/1 day, with aeration); T4 (osmopriming with KNO3 at a concentration of 2.6g.L- 1 H2O, 25 °C/2 days, with aeration); T5 (T3 followed by T2) and T6 (T4 followed by T2). The initial moisture contents, ranging from 6.7% to 8% did not differ from each other (α 0.05). The highest fresh mass increment at 168h and the highest moisture content at the end of the germination test were achieved by T2, 40.9% and 44.3%, respectively. The lowest fresh mass increment at 168h was T1 (13.1%). Osmopriming with KNO3 and aeration contributed to better water absorption in T3 and T4 than in T1, but did not stimulate the germination performance of the seeds. The highest germination percentages and germination speed indexes were obtained from T2 seeds (92% and 8, 4595), T5 (96% and 11.7438) and T6 (94% and 11.6728) as well as the lowest mean germination times T2 (11.73 days), T5 (9.49 days) and T6 (8 .81 days), which did not differ statistically from each other (α 0.05). However, the germination process took less time for T2 seeds, 21 days. The combination of aryl removal and phytohormone solution in a bain-marie at 45 °C/20min. with or without osmopriming with KNO3 stimulated the germination process of P. setacea seeds.
Biologicals in the treatment of chronic rhinosinusitis with nasal polyps – position of the Polish Society of Otorhinolaryngologists – Head and Neck Surgeons and the PolishSociety of Allergology experts
Authors: Jurkiewicz Dariusz , Kupczyk Maciej , Brożek-Mądry Eliza , Rapiejko Piotr
Published: May 2023

Chronic rhinosinusitis with nasal polyps (CRSwNP) has a significant impact on the well-being and social functions of the patient. The generalized inflammatory process with the formation of nasal polyps and excess eosinophils in the mucosa of the paranasal sinuses is called type 2 inflammation, which is mediated by Th2 lymphocytes – cells of the immune system responsible for chronic inflammatory processes. Today, we also know the key pro-inflammatory mediators against which new drugs have been developed, the so-called biological drugs, are produced in cell lines. In this document, we present currently available biologicals approved for the treatment of patients with T2-related chronic rhinosinusitis.
Use of personal knowledge of 8-year-old students in creative solving of technical tasks
Authors: Jelinek Jan Amos
Published: May 2023

Arranging tasks at the level of device design is an important part of supporting children's mental development in technical education classes. Due to little interest in this area of education, there is little research on children's task-solving skills in device design (por. Furmanek, 2007, part 1). This paper presents the situation of solving, by 8-year-old pupils, a task involving the use of a turnstile mechanism to design a device that sends planes into the air. The investigation showed that pupils make strong use of familiar devices (e.g. lift, crane) in designing the device. Referring to the names of the devices, they easily communicate with each other, and when designing a common structure, they complete their ideas and evaluate their practicality. Group creation of a new device is creative and stimulates children's thinking.
Urbanization, Land Scarcity and Urban Farmers’ Mobility: Evidence from Ghana
Authors: Tuffour Michael
Published: May 2023

This study assessed how urban farmers survive land scarcity challenges in the midst of rapid urbanization in a developing country such as Ghana. As land scarcity becomes more pronounced in urban areas, farmers struggle to find a place to farm within the urban space but the numerous opportunities that come with farming within the city still inspires them to find spare lands and open spaces in the city to farm. Therefore, the study examined the factors that influence urban farmers’ mobility with respect to farmland in the midst of intense land scarcity. Reponses from 251 farmers were analyzed with both Tobit and Ordinary Least Squares (OLS). Land situation factors such as land ownership type, land scarcity challenges, and size of land were found to be associated with farmers’ mobility. Farm characteristics such as level of market benefits, intensity of vegetable production, and level of technology were also associated with farmers’ mobility within the city. Personal characteristics such as age, level of education, level of farmer engagement, and marital status also played a role. This implies urban farming sustainability requires conscious government efforts to include urban agriculture in its spatial planning decisions since there are numerous opportunities for farming within the city.
Pengaruh Motivasi dan Lingkungan Kerja Terhadap Kinerja Karyawan pada PT Roda Bangun Mandiri Jakarta
Authors: Gandung Muhammad
Published: May 2023

Tujuan penelitian ini adalah untuk mengetahui pengaruh motivasi dan lingkungan kerja terhadap kinerja karyawan pada PT. Roda Bangun Mandiri di Jakarta. Metode yang digunakan adalah kuantitatif. Teknik pengambilan sampel menggunakan sampling jenuh dan diperoleh sampel sebanyak 58 responden. Analisis data menggunakan uji validitas, uji reliabilitas, uji asumsi klasik, analisis regresi, koefisien korelasi, koefisien determinasi dan uji hipotesis. Hasil penelitian ini adalah Motivasi berpengaruh signifikan terhadap kinerja karyawan dengan nilai koefisien determinasi sebesar 45,1% dan uji hipotesis diperoleh t hitung > t tabel atau (6,778 > 2,003). Lingkungan kerja berpengaruh signifikan terhadap kinerja karyawan dengan nilai koefisien determinasi sebesar 41,9% dan uji hipotesis diperoleh t hitung > t tabel atau (6,352 > 2,003). Motivasi dan lingkungan kerja secara simultan berpengaruh signifikan terhadap kinerja karyawan dengan persamaan regresi Y = 8,634 + 0,395X1 + 0,405X2. Nilai koefisien determinasi sebesar 60,0% sedangkan sisanya sebesar 40,0% dipengaruhi faktor lain. Uji hipotesis diperoleh nilai F hitung > F tabel atau (41,230 > 2,770).
Bonding Additively Manufactured PLA Materials: Effects of Joint Scarf Angle and Substrate Raster Orientation
Authors: PAYGOZAR Bahman , GÖRGÜLÜARSLAN Recep Muhammet
Published: May 2023

The aim of this study is to investigate the effect of the scarf angle of the bonding region and the raster orientation of 3D printed substrates for the adhesive scarf joints made of additively manufactured Polylactic acid (PLA) adherends. In the first step, single PLA specimens were 3D printed using the fused filament fabrication (FFF) process in three different raster orientations of 0º, 45º, and 90º. Tensile and compression tests of them showed that the raster orientation of 90º gives the weakest results. Hence, in the second step, for the scarf joints, the PLA adherends were 3D printed in two different raster orientations of 0º and 45º. The joints were built with five different scarf angles of 15º, 30º, 45º, 60º, and 90º. The tensile and compression tests of all the specimens were conducted to determine the failure loads for different scarf angles and raster orientations. It is found that the endured load before rupture varies measurably as a function of the raster orientation of printed substrates and scarf angle of the joint, but differently for tensile and compression loadings. Eventually, the scarf angle for PLA scarf joints is determined which gives similar failure loads under both tension and compression loadings.
Pengaruh Dana Alokasi Umum dan Dana Alokasi Khusus terhadap Belanja Modal dengan Pertumbuhan Ekonomi sebagai Variabel Moderasi di Kota Langsa
Authors: Meutia Tuti , Husna Imelda , Junita Afrah
Published: May 2023

This research was conducted to know the effect of the General Allocation Fund and the Special Allocation Fund on Capital Expenditures with Economic Growth as a Moderating variable. The results of this study indicate that: (1) General Allocation Funds have a positive and significant effect on Capital Expenditures (2) Special Allocation Funds have a positive and significant effect on Capital Expenditures (3) General Allocation Funds have no significant effect on Capital Expenditures with Economic Growth as a Moderating variable (4) Special Allocation Funds have a positive and significant effect on Capital Expenditures with Economic Growth as a Moderating variable (5) General Allocation Funds and Special Allocation Funds have a positive and significant effect on Capital Expenditures (6) General Allocation Funds and the Special Allocation Fund has a positive and significant effect on Capital Expenditure with Economic Growth as a Moderating variable.
KẾT QUẢ ĐIỀU TRỊ BỆNH VẢY NẾN THỂ MẢNG MỨC ĐỘ NHẸ BẰNG BETAMETHASON, CALCIPOTRIOL KẾT HỢP VỚI BỘ SẢN PHẨM SORION
Authors: Nguyễn Thị Huyền Thương , Vũ Huy Lượng , Vũ Nguyệt Minh , Vũ Thị Hải Yến , Nguyễn Thị Huệ , Nguyễn Thị Mai Hương , Nguyễn Thị Hồng , Trần Thị Quyên , Ngô Thị Hồng Hạnh
Published: May 2023

Đặt vấn đề: Lựa chọn đầu tiên trong điều trị vảy nến thể mảng mức độ nhẹ là điều trị tại chỗ đơn thuần, đặc biệt là thuốc bôi chứa corticosteroid có hoặc không phối hợp với calcipotriol. Tuy nhiên, việc sử dụng thuốc bôi đơn thuần kéo dài có thể gây ra nhiều tác dụng phụ tại chỗ và toàn thân.1 Việc sử dụng kem dưỡng ẩm, chất làm mềm là một phần quan trọng trong chiến lược hỗ trợ điều trị bệnh vảy nến vì dưỡng ẩm giúp phục hồi chức năng hàng rào bảo vệ và giữ độ ẩm cho lớp sừng,2 đồng thời có tác dụng giãn liều corticosterid tại chỗ rõ rệt ở bệnh nhân vảy nến từ đó làm giảm được tác dụng phụ khi dùng kéo dài thuốc bôi chứa corticosteroid.3,4

Mục tiêu: Đánh giá hiệu quả hỗ trợ của bộ sản phẩm Sorion trong điều trị bệnh nhân vảy nến thể mảng mức độ nhẹ tại Bệnh viện Da liễu Trung ương.

Đối tượng và phương pháp nghiên cứu: Nghiên cứu thử nghiệm lâm sàng ngẫu nhiên có đối chứng trên bệnh nhân vảy nến thể mảng mức độ nhẹ đến khám và điều trị tại Bệnh viện Da liễu Trung ương từ tháng 6/2022 đến tháng 12/2022. Chương trình SPSS 20.0 được sử dụng để phân tích số liệu.

Kết quả: 82,9% bệnh nhân hoàn thành theo dõi đến tuần 8; tỷ lệ hoàn thành nghiên cứu ở nhóm nghiên cứu cao hơn nhóm chứng (88,6% so với 77,1%). Chỉ số PASI giảm so với thời điểm tuần 0 ở nhóm nghiên cứu cao hơn nhóm chứng ở tuần 2 (40,9% so với 33,9%) và tuần 4 (53,4% so với 42,5%) với p < 0,05. Tỷ lệ bệnh nhân đạt PASI50 ở nhóm nghiên cứu cao hơn nhóm chứng ở tuần 8 với p < 0,05 (74,2% so với 48,1%). Tỷ lệ tái phát ở hai nhóm trong 8 tuần điều trị không có sự khác biệt với p > 0,05 (nhóm nghiên cứu 25,8%; nhóm chứng 29,6%).

Kết luận: Việc sử dụng kem dưỡng ẩm phối hợp với thuốc bôi điều trị tại chỗ ở bệnh nhân vảy nến thể mảng mức độ nhẹ đóng vai trò quan trọng trong việc đạt nhanh đáp ứng điều trị (đánh giá thông qua việc giảm chỉ số PASI và tỷ lệ đạt PASI50). Tuy nhiên để đánh giá việc sử dụng kem dưỡng ẩm phối hợp với thuốc bôi chứa betamethason và calcipotriol có làm giảm tỷ lệ tái phát bệnh hay không thì cần có những nghiên cứu với thời gian điều trị dài hơn và cỡ mẫu lớn hơn.
Natural Processes and Hygiene to Protect Against Spread and Mutations of COVID-19
Authors: Bryndin Evgeny , Bryndina Irina
Published: May 2023

Our planet is a living being that has its own protective viral mechanism. Viruses are activated when people intervene too zealously in the natural processes on the planet and worsen the environment. With a decrease in the spiritual level of society, deterioration of the environment, climate change, pollution of water and soil and other catastrophic violations of natural processes on the planet, an epidemic and the process of mutation of viruses begins, as a result of which more and more of their species and strains appear. The coronavirus is becoming more and more infectious, more and more often affects the young and, according to some reports, aggravates the course of the disease. COVID-19 acquires variability and increases infectiousness in people with weak immunity. Mutations of COVID-19 and infection will stop if the path of transmission of coronavirus from person to person is interrupted. To do this, you need to observe natural and medical protective measures, acquire appropriate knowledge and skills and have protective equipment available.
Actualización en Cuidados Intensivos Pediátricos Vol. 3
Authors: Vitonera Cerna Génesis Dumaniela , Vitonera Cerna Carlos Josué , Tixi Carrillo Carolina Elena , Robalino Luzuriaga Bryan Steven , Culqui Cabascango Kerly Elizabeth , Robalino Luzuriaga Andrea Paola , Salazar Domínguez Denisse Carolina
Published: May 2023

El cuidado intensivo pediátrico es un área de la medicina que requiere una formación especializada y continua. La complejidad y gravedad de las enfermedades en los pacientes pediátricos críticos requiere un conocimiento profundo de la fisiopatología, diagnóstico y tratamiento. El objetivo de este libro es proporcionar una guía actualizada y completa para los médicos que trabajan en el área de cuidados intensivos pediátricos. Se abordarán temas relevantes para el manejo y tratamiento de pacientes críticamente enfermos, incluyendo el uso de tecnologías avanzadas, el manejo de situaciones de emergencia y la toma de decisiones clínicas complejas. Este libro busca mejorar la calidad de atención en cuidados intensivos pediátricos y ayudar a los médicos a tomar decisiones informadas y basadas en la evidencia para mejorar los resultados clínicos y la supervivencia de los pacientes pediátricos críticamente enfermos.
Fundamentos de Odontología Tomo 3
Authors: Sánchez Moreno Jhaniela Karina , Torres Abad Detsy Mercedes , Ibarra Cantillo Lilibeth Ibeth , Camacho Montes Eduardo Manuel , Holguín García Sol Gabriela
Published: May 2023

Este libro de cirugía para odontólogos ha sido diseñado específicamente para proporcionar una guía detallada de los procedimientos quirúrgicos más avanzados en odontología. Está dirigido a aquellos odontólogos que deseen profundizar en el conocimiento y las habilidades quirúrgicas necesarias para ofrecer una atención de calidad a sus pacientes.
Morpho-genetic and Yield Characteristics of Different Accessions of Vigna unguiculata (L.) Walp
Authors: Yekeen Maruf O. , Wahab Olasumbo, M. , Jimoh Kabirat O.
Published: May 2023

Vigna unguiculata (L.) Walp. is a very important crop cultivated for its seeds, fresh/ dried leaves and young pods. The study evaluated the qualitative and morpho-agronomic characteristics of sixteen varieties of V. unguiculata for their effective utilization in genetic improvement of the species. Treatments were laid out in randomized complete block design and replicated four times. Data from quantitative characters were subjected to analysis of variance. The means were separated using Duncan’s Multiple Range Test at p<0.05. Data were also subjected to cluster analysis, while the inter-character relationship between the accessions was determined through Pearson’s Product Moment Correlation. The result showed that Tvu-9312, Tvu-7813, Tvu-9287 and Tvu-500 had the highest germination percentage (100%). Tvu-8018 had the shortest days to first flowering (46 days), while the shortest days to 50% flowering (52days) and peduncle lengths (19.88cm) were observed in Tvu-23. TVu-198 had the highest pod lengths (17.35cm), while TVu-8018 had the highest number of pods (4.63). Principal Component Analysis showed that the first three principal axes explained 72.0% of the total variation in the morphology and yield traits. The traits producing most of the observed variations include number of pods per plant, number of primary branches, days to first and 50% flowering. Cluster analysis showed the accessions were heterogeneous and morphologically diverse and clustered into 5 groups. Accessions in the different clusters can be recommended for cultivation or used in the development of improved cultivars of V. unguiculata.
Estrategias administrativas en las empresas familiares: Sector calzado
Authors: Artieda Rojas Jorge Rodrigo , Guarnizo Ponce Walter Javier , Zúñiga Vásquez Freddy Giovanni , Gavilanes Reinoso Marcela Cristina , Viera Guerrero Jenny del Pilar
Published: May 2023

El objetivo del presente artículo es determinar cómo las estrategias administrativas inciden en la continuidad de las empresas familiares del sector calzado de la ciudad de Ambato, para ello se recolecta información a través de la Cámara Nacional de Calzado CALTU, mediante una modalidad de investigación de campo con un enfoque cualitativo, misma que llevó al planteamiento de conclusiones y recomendaciones, analizada dicha información se identificó problemas latentes en las empresas del sector, con respecto a su deficiente gestión estratégica que tiene impacto directo dentro de la continuidad de las mismas, por lo cual se propone diseñar un Modelo de gestión estratégica para las empresas familiares del sector calzado en la ciudad de Ambato con el fin de garantizar su continuidad.
Novel privacy vulnerabilities and challenges of OpenFlow-based SDN in network
security
Authors: Yujie Xie  , Pankoo Kim
Published: May 2023

In the last decade, software defined networking (SDN) with novel mobile network
environment hasdrawn so many attentions from both IT industries and academic because of
its huge convenient andeconomic cost. Advanced mobile networks provide abundant
entertainments and rich lifestyle forcitizens, which requires larger storage and higher
quality of internet environments such as innovativemobile cloud computing and especially
potential SDN [1]. Then emerging SDN technology satisfyingmore users’ demands gains a
lot of momentum, which is a new network structure with highersecurity than traditional
networks. Meanwhile, novel vulnerabilities and challenges play the mostimportant roles
in the deployment of software defined networking. In this paper, at first, we
brieflyintroduce software defined networking including three main planes. Then
OpenFlow-based SDN areillustrated. The procedure of OpenFlow-based SDN working is also
provided in this part. And relatedsecurity vulnerabilities and challenges on each layer
are presented in the last part.
Detection of Malware using the DHP Algorithm and Logistic Regression
Analysis
Authors: Yeongji Ju  , Juhyun Shin
Published: May 2023

The proliferation of computer networks has helped to further develop the software
industry. However,this has been accompanied by an increase in the numbers of several
types of malware. Therefore,research efforts have been directed towards detecting
malware’ actions and identifying certain executionfiles based on their Application
Programming Interface (API) data. The majority of contemporaryantivirus programs employ
a signature detection technique; however, the number of signaturesis very limited
whereas the number of malware is increasing rapidly, which leads to a very highfalse
detection rate. To address this issue, In this paper suggests a Malware analysis and
detectionmethod using an association rule mining algorithm and logistic regression
analysis. By using theDirect Hashing and Pruning (DHP) algorithm, the API of the malware
and the normal codes withina Portable Executable (PE) file are compiled as a hash table.
Association pattern rules are probed togroup the patterns. theassociation rule patterns
extracted through this research reduced false detectionrates when classificationwas
carried out using the logistic regression analysis, and the discriminationresult was
shown to begreater than 0.7.
Dynamic Analysis of Android Apps written with PhoneGap Cross-Platform
Framework
Authors: Jaewoo Shim  , Minjae Park  , Seong-je Cho  , Minkyu Park  , Sangchul Han
Published: May 2023

In this paper, we propose an effective technique that can perform dynamic analysis
for Android appwritten with PhoneGap cross-platform framework. For a systematic study,
we have written a maliciousAndroid app using PhoneGap framework. We compare the
structural differences between abasic Android app (a native app) and the other malicious
Android app built in release mode on Phone-Gap framework, and also analyze the malicious
app dynamically. The proposed technique first copiesthe web root directory of the target
malicious app into a writable directory inside the smartphone.When the app is executed,
its web pages and Javascript files are loaded from the copied directoryusing a dynamic
instrumentation. Finally, we dynamically change the flag for WebView debuggingso that a
remote debugger can successfully be attached to the app built in release mode. Using
ourproposed technique, a malware analyst can debug a malicious PhoneGap app built in
release modewithout repackaging, which cannot be debugged as it is by Chrome remote
debugger. She/he canalso utilize the debugging features supported by the remote
debugger. The technique allows the analystto bypass the repackaging detection method
that malicious apps use to avoid antivirus detection.
SVM based Traffic Classification for Mitigating HTTP Attack
Authors: V. Punitha  , C. Mala
Published: May 2023

The advancement in Internet technology brings new dimension to commercial
applications, entertainmentand information sharing. Consequently, many web services are
launched in almost all needs ofthe internet users. The development of effective network
infrastructure increases the usage of theseservices. However the convenience of using
the web services are blocked by denial of service attack,which is the foremost web
threat. This attack injects malicious traffics into the internet which deeplyaffects the
availability of services. Categorizing the malicious traffic from normal traffic
facilitatesthe elimination process. In view of eliminating the most victimized attacks
which deny the servicesto the potential users, this paper proposes a classification
method based on machine learning technique.The proposed SVM based classifier
discriminates the HTTP attacks that intentionally blocksthe computing resources to the
legitimate users based on network flow properties. The network flowproperties are
selected by the proposed optimization method. The simulated results exhibit that
withoptimized feature set, the classification performance of the proposed classifier
using RBF kernel iscompetently higher when compared with other kernel models.
Control Channel Networks: A Fast Blockchain-Based Access Control in Peer-to-Peer
Networks
Authors: Siwan Noh  , Hynwoo Kim  , Sang-Uk Shin  , Kyung-Hyune Rhee
Published: May 2023

In the past, most medical data were created and managed by hospitals. These days,
however, patientscan generate these data by themselves without visiting hospitals.
Unlike previous data, the latter isgenerated by patients themselves. To efficiently
manage these data without need of the third party,a blockchain-based access control was
proposed. If the patient wants to delegate the right of theaccess to his data, he
creates a token for the requester and stores it on the blockchain as a form of
thetransaction. Moreover, patients can make it invalid and impossible to re-use at any
time. However,if the number of the transactions in the blockchain network is exceeded
the maximum throughput ofthe system, the system cannot provide a reliable service.
Moreover, due to the feature of the publicblockchain, anyone can see the history of the
specific data by tracing the transaction stored on theblockchain. In this paper, to
solve the scalability problem on the public blockchain based accesscontrol system and
its invasion of privacy, we propose a token based personal data management systembased
on . When the requester sending a request message, the resource owner creates a
tokentransaction for the intermediary’s address and then asks the delivery of the
transaction between hisprimary chain and the requester’s sub chain via multiple sub
chain. Finally, the relayed transactionfor the access control is stored on the
requester’s blockchain. The linkability of transactions on thedifferent blockchain is
hidden from the third party user and our system is able to process it veryquickly
regardless of the blockchain’s throughput.
An Optimization of Phi-function for Convex Polygons
Authors: Narendran Rajagopalan  , Mala C.  , Anit Nobert
Published: May 2023

Cutting and packing (C&P) problems have gained the attention of geometrical
researchers for thepast few decades given its applications in a wide variety of
industries. Phi-function is a popular toolused in solving these problems. Phi-function
for convex polygons is explored in detail in this work.After analysis of the existing
equations, it was found that the function yielded same output for different input sets
of varying separation among convex polygons. The reason for this anomaly was foundand a
mitigation strategy is also suggested. Consequently a more accurate phi-function for
convexpolygons is proposed that addresses the above case and gives better
result.
RE-NetBoot: Resource-Efficient Network Boot for IoT Platform
Authors: Keon-Ho Park  , Ki-Woong Park
Published: May 2023

The Internet of Things (IoT) platform consists of numerous IoT devices and a small
number ofservers. In order for the platform to operate efficiently and reliably, servers
need to have completecontrol over many IoT devices. The advantage of using network boot
in this environment is thatthe server has control over the device’s boot process. When
applying network boot on an IoT platform,the server needs to be able to handle the
network boot that many IoT devices request. If theserver does not have enough processing
power for the network boot request, IoT device boot wouldbe delayed. In this paper, we
propose a resource-efficient network boot to solve this problem. Theproposed framework
has three mechanism. First, the server reserves the right to control which systemimage
to transfer during the network boot process on the platform. Second, the server
appliesdeduplication to the system image to minimize the amount of data required for
transmission. Third,the server monitors network boot requests and performs file
transfers appropriate to the situation,minimizing time spent on transfers. The proposed
system allows the server to efficiently control numerousIoT devices when using network
boot on the IoT platform.
Local Mobility Perceptual Model Based on Fuzzy Logic in MANET
Authors: Letian Li  , Jiushuang Wang  , Xueqiang Tao  , Chenfei Gu  , Lingwei Wu
Published: May 2023

As a key pattern in wireless communications, ad hoc is able to improve spectrum
utilization andnetwork throughput evidently. Data existed in ad hoc network get better
security because it willnever be transmitted through the public network. However, there
are significant gaps, in terms ofmovement speeds, areas, etc., among multiple devices
causing network instability problems, whichtraditional routing protocols lack necessary
considerations about. The obvious influence is performancereduction or transmission
failure. Therefore, we propose a perceptual model based on fuzzylogic to obtain degree
of mobility in local region. Establishment procedures include motion
perception,parameters fuzzification, and output normalization. That is, nodes observe
adjacent nodes andcalculates topology change rate and average speed of neighbors. Then
using membership functionfuzzify the relationship between above parameters and mobility
level. Finally, acquiring the normalizedoutput with the help of centroid formula.
Relevant modifications of a reprehensive protocolare implemented to optimize its
robustness in complex situations. Simulation results illustrate thatthe upgraded
protocol can maintain high packet arrival rate and acceptable latency in various
experiments,which proves the usability and efficiency of our model in different mobile
scenarios.
Design of Anonymous Endorsers in Hyperledger Fabric with Linkable Threshold Ring
Signature
Authors: Dharani J  , Sundarakantham K  , Kunwar Singh  , Mercy Shalinie S
Published: May 2023

Blockchain technology has gained its attention from its application in bitcoin
which circumventedthe problem of double spending that existed in the prior digital
currencies, through validation. Particularlypermissioned blockchain framework became
popular with organizations forming consortiumthat allowed only authorized entities to
participate in the network. Hyperledger Fabric, a popular distributedledger technology
hosted by Linux Foundation has remarkable features because of the factthat it is open
source. It stands out from other frameworks as it focuses on the
privacy-preservingrequirements of the enterprises. Apart from only allowing
authenticated organizations to participatein the network it implements channels that
allows a subset of organizations to communicate concealingthe existence of such a
channel to other members. Optionally fabric also provides anonymity andunlinkability of
the participating clients through a cryptographic protocol suite called Idemix
thatoperates based on zero-knowledge proofs. Fabric follows the execute-order-validate
transaction flowas opposed to order-execute flow that had certain limitations in other
platforms. For executing thetransactions submitted by the clients, fabric has designated
endorsing peers which holds the smartcontract - programmable business logic. Endorsing
peers or endorsers execute the transactions andattach their signatures to the results
for validation purpose. But revealing the endorser identities maybe a problem when there
is conflict of interest among the enterprises. Hence to have an unbiased flowof work it
is important to conceal the endorser identity. According to [1] anonymization of
endorsingpeers is still a open problem in fabric community. We propose a solution to
this problem which useslinkable threshold ring signatures that conceals the identity of
endorsers. Ring signatures are knownfor preserving the privacy of the signer in a group.
Threshold ring signature allows t-out-of-n signersto collaborate on the signing
procedure. Employing threshold ring signature implicitly addressesone more problem
stated in [10] where the verifiers need to manually count the valid ring signaturethat
increases the verification time. This process of separately verifying each of the
signatures andchecking if the number of signatures is more than the threshold value is
replaced by having just onethreshold signature collaboratively signed by the required
endorsers.
Two novel cache management mechanisms on CPU-GPU heterogeneous processors
Authors: Huijing Yang  , Tingwen Yu
Published: May 2023

Heterogeneous multicore processors that take full advantage of CPUs and GPUs
within the samechip raise an emerging challenge for sharing a series of on-chip
resources, particularly Last-LevelCache (LLC) resources. Since the GPU core has good
parallelism and memory latency tolerance,the majority of the LLC space is utilized by
GPU applications. Under the current cache managementpolicies, the LLC sharing of CPU
applications can be remarkably decreased due to the existence ofGPU workloads, thus
seriously affecting the overall performance. To alleviate the unfair contentionwithin
CPUs and GPUs for the cache capability, we propose two novel cache supervision
mechanisms:static cache partitioning scheme based on adaptive replacement policy (SARP)
and dynamiccache partitioning scheme based on GPU missing awareness (DGMA). SARP scheme
first uses cachepartitioning to split the cache ways between CPUs and GPUs and then uses
adaptive cache replacementpolicy depending on the type of the requested message. DGMA
scheme monitors GPU’s cacheperformance metrics at run time and set appropriate threshold
to dynamically change the cache ratioof the mutual LLC between various kernels.
Experimental results show that SARP mechanismcan further increase CPU performance, up to
32.6% and an average increase of 8.4%. And DGMAscheme improves CPU performance under the
premise of ensuring that GPU performance is not affected,and achieves a maximum increase
of 18.1% and an average increase of 7.7%.
Counterfeited Product Identification in a Supply Chain using Blockchain
Technology
Authors: Shivam Singh  , Gaurav Choudhary  , Shishir Kumar Shandilya  , Vikas Sihag  , Arjun Choudhary
Published: May 2023

Since the invention of the Blockchain technology in 2008, it has been used in many
domains to ensurehigh security and reliability of data, like from the use of Bitcoin to
BaaS (Blockchain as a Service)which is a new blockchain trend and is a sort of
cloud-based network for the organizations in thebusiness of building blockchain-based
applications. This paper implements the combined approachof the decentralized Blockchain
technology and the Supply Chain to establish that the end-users ina supply chain do not
completely rely on the trader to establish that the product is counterfeited ornot and
this can be done by authenticating the product at every stage in the Supply Chain by
usingOne Time Passwords on the receiver’s mobile phone along with a deployed personnel
who willbe responsible for assuring the quality of products. Furthermore, using this
combined technical approachcan considerably lower down the cost of product quality
assurance and this proposed systemwill track the authenticity of the product from its
origin from the manufacturer to the end-user as well.
A method for suppressing disorderly scheduling in multipath transmission scenarios
using time delay offset
Authors: Shuxing Zhu
Published: May 2023

Multipath transmission enables packets to be distributed over different paths for
transmission, andthis method has made full use of individual link resources. However,
most existing multipath transmissionschemes lack suitable scheduling mechanisms and
suffer from high disorder and packet loss.To address the disorder problem, this paper
designs a delay offset method combined with link rejectionor adaptive delay adjustment
mechanism to suppress the packet disorder problem in multipathtransmission scenarios
based on an in-depth study of the background related to multipath transmission.Finally,
a multipath link topology is built on the P4 simulation platform to implement the
abovemethod in code simulation, and the experimental results are compared and analyzed
with other twoscheduling mechanisms. The experimental results show that this method
maintains the disorder levelwithin 5% compared with the single-path transmission and the
equivalent multipath method, but thetransmission bandwidth is increased by nearly two
times.
A Survey on Network Security issues in Space Internet
Authors: Cheng Gong  , Tongwei Liu
Published: May 2023

Space Internet, which integrates satellite communication networks, aerial
networks, terrestrial networks,and marine communication networks, has been an emerging
architecture and attracted intensiveresearch interest during the past years. In
consideration of its cooperation characteristics ofmulti-layer networks, open
communication environment, and time-varying topologies, Space Internetfaces many
unprecedented security challenges. We provide a detailed survey of recent researchworks
on network security issues in Space Internet in the aspects of security threats and
defensecountermeasures. To the best of our knowledge, we are the first to present the
state-of-the-art ofsecurity for Space Internet, since existing surveys focused either on
a certain segment or on severalsegments of the integrated network. We first briefly
introduce the essential background and the viewof the Space Internet, as well as discuss
the related security challenges faced by the emerging integratednetwork architecture.
Then, we present a comprehensive review of recent research worksconcerning network
security issues in Space Internet, which we categorize by different research
directions.Finally, several future challenges and the respective open research topics
are described.
Biometrics System Technology Trends Based on Bio-signal
Authors: Gyuho Choi  , Sungbum Pan
Published: May 2023

Biometrics is a technology that authenticates, identifies, and recognizes user
using individual uniquephysical or behavioral characteristics. The scope of services is
expanding with necessity and utility ina wide range of fields such as finance, security,
access control, medical welfare, public service, quarantine,and entertainment. Research
using bio-signal inside the body than bio-information outsidethe body is being actively
conducted. In this paper, we analyze research about technologies of biometricssystems
using bio-signals such as ECG, heart sound, EMG, EEG, and present the
necessarytechnologies for the development direction. In the future, bio-signal based
database construction incomplex conditions, deep learning network design through
analyzes big data, and biometrics systemtechnologies applied in a real-time environment
are expected to be studied.
Multi-class DRDoS Attack Detection Method Based on Feature Selection
Authors: Tianqi Yang  , Weilin Wang  , Ying Liu  , Huachun Zhou
Published: May 2023

Distributed denial of service (DDoS) attack is one of the most serious threats to
the Internet The emergenceof distributed reflection denial of service (DRDoS) attacks
has increased the harm of DDoSattacks. Aiming at the common DRDoS attacks such as
Memcached, TFTP, NTP, SSDP, SNMPand Chargen in the network, a multi-class DRDoS attack
detection method based on feature selectionis proposed. Through the analysis of the
behavior and characteristics of attack, combined withprobability distribution of
features and feature importance to obtain a feature subset of 24 features.When
constructing XGBoost model, the input features are the feature subset obtained by the
abovefeature selection, and the model outputs multi classification results. The selected
features can betterreflect the characteristics of DRDoS attack and improve the detection
performance of the model. Experimentalresults show that the feature subset obtained by
this method has high precision in multiclassification against DRDoS attacks, and is
better than the traditional methods such as support vectormachine and multi-layer
perceptron. Feature selection not only reduces the processing time, butalso reduces the
malicious traffic by 99.93%.