Performance Analysis on Multiple Device Connections of Small Office Home Office Network

تم دعم ماليزيا من خلال إحدى اتصالات الإنترنت عالية السرعة بالألياف والتي تسمى TM UniFi. TM UniFi مألوف جدًا لاستخدامه كوسيلة لتطبيق مفهوم Small Office Home Office (SOHO)  بسبب وباء COVID-19. يقدم معظم بائعي الاتصالات مجموعة متنوعة من خدمات الشبكة لتلبية احتياجات العملاء ورضاهم أثناء الوباء. يستفسر معظم المستخدمين عن جودة الخدمات من خلال حقيقة زيادة المستخدمين من وقت لآخر. لذلك ، من الأهمية بمكان معرفة أداء الشبكة على عكس عدد الأجهزة المتصلة بشبكة TM UniFi. الهدف الرئيسي من هذا البحث هو تحليل أداء TM UniFi مع تأثير اتصالات الأجهزة المتعددة أو خدمات المستخدمين. أجريت الدراسة لتحليل جودة الخدمة (QoS) على حركة البيانات ، ونقل الحزم ، و RTT ، والكمون ، والإنتاجية. تم استخدام برنامج محاكاة Wireshark كالتقاط لحركة مرور الشبكة حيث تم تحليل ملفات PCAP باستخدام محلل PCAP لـ Splunk. تم تمكين تصفية حركة المرور لالتقاط حركة المرور المحددة لقياس أداء الشبكة. تظهر النتيجة أنه يمكن تحقيق أداء أفضل للشبكة إذا تم توصيل عدد أقل من الأجهزة في نفس الوقت. تزداد النسبة المئوية لفقدان الحزم و RTT ووقت الاستجابة عند اتصال المزيد من المستخدمين في نفس الوقت. يُظهر معدل النقل أيضًا انخفاضًا في الاتصالات متعددة الأجهزة. بناءً على التحليل ، يمكن استنتاج أن TM UniFi لا يزال بإمكانها توفير خدمات شبكة جيدة لبيئة شبكة SOHO وعرض نطاق ترددي كافٍ على الرغم من النمو السريع للمستخدمين في ماليزيا.Malaysia has been supported by one of the high-speed fiber internet connections called TM UniFi. TM UniFi is very familiar to be used as a medium to apply Small Office Home Office (SOHO) concept due to the COVID-19 pandemic. Most of the communication vendors offer varieties of network services to fulfill customers' needs and satisfaction during the pandemic. Quality of Services is queried by most users by the fact of increased on users from time to time. Therefore, it is crucial to know the network performance contrary to the number of devices connected to the TM UniFi network. The main objective of this research is to analyze TM UniFi performance with the impact of multiple device connections or users' services. The study was conducted to analyze the QoS on its traffic, packets transfer, RTT, latency, and throughput. Wireshark simulation program has been used as a network traffic capture where PCAP files have been analyzed by using PCAP Analyzer for Splunk. Traffic filtering has been enabled to capture selected traffic to measure network performance. The result shows that better network performance can be achieved if a smaller number of devices are connected at the same time.  The percentage of packet loss, RTT, latency is increased when more users connected at the same time. The throughput also shows a decrease for multi-device connections. Based on the analysis it can be concluded that TM UniFi still can provide good network services for the SOHO network environment and sufficient bandwidth despite the rapid user growth in Malaysia

Light Intensity and Soil Compaction as Influenced by Ecotourism Activities in Pahang National Park, Malaysia

Pahang National Park provides a diversity of flora and fauna, which is popular for ecotourism activities within Malaysia. The ecotourism activities such as trekking and camping may result in some degree of changes to the forest condition in the protected areas. Therefore, a study was conducted to investigate the influences of ecotourism activities on the light intensity and soil compaction in Pahang National Park. A total of 40 plots measuring at 20 × 25 m were established in camping area, trekking trail and natural area of the park. The light intensity and soil compaction were measured using hemispherical photography at nine points and a hand penetrometer at five points, respectively, randomly selected in each plot. The Analysis of Variance shows there was a significant difference in the means of light intensity and soil compaction in three study sites (p < 0.05). The light intensity in the trekking trail is significantly greater than in natural area (18.87% vs. 13.13%). The soil compaction in the trekking trail is significantly greater than in natural area and camping area (p < 0.05). This may suggest that ecotourism activities especially trekking activity has significantly influenced the trend of forest light intensity and soil compaction in Pahang National Park

Frequency domain processing for artificial synthesis of swiftlet's sound waves

Swiftlet is a valuable farming industry in SouthEast Asia for earning foreign exchange. Many countries at this region are competing with each other to localize this industry. However, inviting the swiftlets into the farms based on traditional bird-call playing involves a trial and error process. This paper proposes a new technique to mechanize this process using a spectrogram processing approach. A novel model has been designed to recognize the bird-call and construct the enrollment database. Then, a frequency-based processing of swiftlet's sound waves based on the database was built with real world swiftlet's sound waves. The proposed prototype can be applied successfully to improve this industry

Silvicultural prescriptions for second growth forests: a case study in Tekam F.R..

Introduction of mechanized harvesting to inland dipterocarp forest can alter the size, structure, species composition, spatial distribution, stocking level of the pristine rainforest towards a more heterogeneous residual stands. The assessment of second growth forest at landscape level using satellite imagery allows us to examine the variation of stand condition over a large area, and development of a strategic planning to support sustainable management. In developing the silvicultural prescriptions, we looked into three key components of forest stand and used them as the basis to decide on the appropriate silvicultural option. Our assessment approach began with classifying the forest stands into eight commercial species groups. Using a stand projection model we simulated the stand stocking, structure and composition up to 120 years. More than thirty (30) cutting options with minimum dbh limit of 45 cm and 50 cm for non-dipterocarp and dipterocarps, respectively were applied on the simulated stand at each 5 years time step. A growing stock assessment was carried out using minimum stocking standards such as residual stand density, net commercial volume, and proportion of dipterocarps. The silvicultural decision made is not only taking into account the current status of the growing stock but also the projected future stand condition. The paper presents the outcome of the growing stock assessment and recommends silvicultural options to enhance the growing stock of second growth production forest

Phase behavior of engkabang fat with nonionic surfactants

Phase behavior of engkabang fat was determined through the construction of ternary phase diagrams using nonionic surfactants. Several phase regions appeared in the ternary phase diagrams such as isotropic, homogenous, liquid crystal, two phase and three phase regions. The increase of hydrophilic-lipophilic balance (HLB) values of the nonionic surfactants used gave larger isotropic and homogenous region in the ternary phase diagrams. The combination of engkabang fat:Solubilisant Gamma (2:1) in the ternary phases diagram gave an even larger isotropic and homogenous regions as well as the formation of liquid crystal region

Characterization and effect on skin hydration of engkabang-based emulsions

Formulations containing engkabang fat and engkabang fat esters, F10 and E15 respectively were prepared using a high-shear homogenizer, followed by a high-pressure homogenizer. Both formulations were stable at room temperature, at 45 degrees C, and after undergoing freeze-thaw cycles. The particle sizes of F10 and E15 after high pressure were 115.75 nm and 148.41 nm respectively. The zeta potentials of F10 and E15 were -36.4 mV and -48.8 mV respectively, while, the pH values of F10 and E15 were 5.59 and 5.81 respectively. The rheology of F10 and E15 showed thixotropy and pseudoplastic behavior respectively. There were no bacteria or fungal growths in the samples. The short-term moisturizing effect on 20 subjects analyzed by analysis of variance (ANOVA), gave p-values of 7.35 x 10(-12) and 2.77 x 10(-15) for F10 and E15 respectively. The hydration of the skins increased after application of F10 and E15 with p-value below 0.05

Engkabang fat as a base in preparing encapsulated titanium dioxide for cosmetics purpose

The aim of the present study is to encapsulated titanium dioxide using engkabang fat and beeswax in emulsion system in order to enhance the UV attenuation, test the stability of the samples and characterized them. Those formulations were prepared using high shear homogenizer and followed by high pressure homogenozer. Engkabang fat and beeswax were used as a base material in preparation of formulations. Surface charge measurements of formulations comprising values from -30 mV to -36 mV denoted the presence of stable dispersions. The morphological characterization confirmed the encapsulations of titanium dioxide in the formulations F10-2A. The presence of TiO2 gave higher conductivity values due to the existence of metal material that carried charge. The formulation containing encapsulated of TiO2 gave higher absorbance compared to the formulation containing non-encapsulated of TiO2. Thus, it is effective for cosmeceutical industry