Analisis Pendapatan, Biaya Dan Keuntungan Bottom Gill Net Dengan Atraktor Umpan Dan Atraktor Umpan Di Perairan Jepara Jawa Tengah

Alat tangkap yang umumnya digunakan nelayan di Jepara merupakan jaring insang dasar (bottom gill net) yang terbuat dari nilon monofilament dan tanpa menggunakan umpan. Tujuan dari penelitian ini adalah menganalisis tingkat produksi serta menganalisis pendapatan, biaya dan keuntungan gill net dengan atraktor umpan (ikan asin, ikan petek dan pelet) dan tanpa umpan di Perairan Jepara. Metode yang digunakan dalam penelitian ini adalah metode deskriptif kuantitatif bersifat experimental fishing. Metode pengambilan sampel yang digunakan metode purposive sampling dengan sampel yang telah ditentukan yaitu 1 kapal nelayan gill net dengan 3 ABK. Metode analisis yang digunakan adalah uji F (Anova) SPSS 16. Hasil penelitian diperoleh bahwa USAha penangkapan gill net dengan atraktor umpan ikan asin memberikan hasil penerimaan terbesar dibandingkan perlakuan lainnya. Penerimaan jaring umpan ikan asin terbesar pada ulangan ke 6 sebesar Rp. 1.045.000, keuntungan Rp. 961.200. Analisis Uji F menunjukkan perbedaan perlakuan jaring gill net dengan pemasangan umpan dan tanpa umpan tidak berpengaruh nyata terhadap berat hasil tangkapan, pendapatan dan keuntungan.

Analisis Potensi Dan Tingkat Pemanfaatan Sumberdaya Ikan Demersal Di Perairan Kabupaten Kendal

Perairan Kabupaten Kendal merupakan salah satu wilayah penyebaran ikan demersal yang cukup potensial di perairan utara Jawa Tengah. Upaya pemanfaatan yang terus meningkat akan mengancam kelestarian sumberdaya, jika tidak diupayakan langkah pengendalian. Informasi potensi dan tingkat pemanfaatannya perlu diketahui terkait dengan aspek pengendalian. Tujuan penelitian adalah menganalisis estimasi stok, (CPUE) Catch per Unit Effort, Potensi Lestari / (MSY) Maximum Sustainable Yield ikan demersal untuk mengetahui status tingkat pemanfaatan, status kondisi daerah penangkapan ikan, serta upaya pemanfaatan sumberdaya ikan demersal yang optimum. Penelitian dilaksanakan pada bulan Agustus-September 2012. Metode penelitian yang digunakan adalah survei eksploratif, metode pengambilan sampel secara purposive sampling, sebanyak 4 sampel. Metode analisis data yang digunakan adalah metode swept area dan metode surplus produksi model Schaefer. Hasil penelitian diperoleh stok density sebesar 0,325 ton/km2 di perairan Kabupaten Kendal, sedangkan penangkapan optimum sumberdaya ikan demersal (CMSY) sebesar 1.514 ton/tahun dan upaya optimumnya effort optimum (EMSY) sebesar 2.423 trip/tahun. Tingkat pemanfaatan rata-rata sumberdaya ikan demersal selama 5 tahun terakhir telah melebihi 100% yaitu sebesar 113%. Hal ini menunjukkan kapasitas tangkapan berlebih dari ketentuan CCRF, dengan kata lain sudah terjadi overfishing. Kendal Regency is one of distribution area of potential demersal fish in the North Central Java. The resources utilization rate was no control in, it\u27s will be threated with the increasing of fishing effort on this recources. Potential information and utilization rate should be known about controlling aspect. Research aims were to analyze stock potency, Catch per Unit Effort (CPUE), Maximum Sustainable Yield (MSY) demersal fish, utilization rate, condition of fishing ground and optimum effort of demersal fish. Research conducted in august-september 2012 at Kendal Regency. Research method used explorative survey, sampling method was purposive sampling with 4 samples. Data analyze method used swept area and production surplus method – Schaefer Model. Result research, the stock density was 0,325 ton/km2 in Kendal Regency Seawaters while catch optimum (CMSY) of demersal water resource was 1.514 ton/year and the optimum effort (EMSY) was 2.423 trip/year. The demercal fish resource utilization rate during the last 5 years was more than 100% which count 113% it shown was catching capacity that exceeded agreed in the CCRF, its mean was overfishing

Analisis Produktivitas Purse Seine Gardan Dan Purse Seine Slerek Dengan Fishing Base Di Pelabuhan Perikanan Pantai (Ppp) Muncar Kabupaten Banyuwangi Jawa Timur

Tujuan dari penelitian ini adalah untuk mengetahui dan menganalisis produktivitas purse seine gardan dan purse seine slerek di PPP Muncar Banyuwangi Jawa Timur. Metode yang digunakan adalah metode deskriptif. Metode penentuan sampel menggunakan metode non probability sampling, yaitu accidental sampling (convenience sampling). Metode analisis data yang digunakan adalah analisis produktivitas dan analisis data statistik untuk uji perbandingan menggunakan uji t atau Mann Whitney U test. Hasil penelitian tersebut purse seine slerek lebih produktif dibandingkan dengan purse seine gardan yang dapat dilihat dari beberapa faktor produktivitas menunjukkan hasil yang lebih besar yaitu pada produktivitas per trip, produktivitas per ABK, produktivitas per GT, dan produktivitas per PK. Sedangkan pada produktivitas per BBM dan produktivitas per biaya menunjukkan hasil bahwa purse seine gardan lebih produktif dibandingkan dengan purse seine slerek karena biaya operasional setiap hari lebih kecil. The purpose of this research was to know and analyze productivity of purse seine gardan and purse seine slerek at Muncar Coastal Fishing Port in Banyuwangi, East Java. The method of this research used descriptive method. The sampling method used non-probability sampling method, i.e. accidental sampling (convenience sampling). Data analysis method used analysis of productivity and analysis of statistical data. Comparison test used Independent samplet test or Mann Whitney U test. The research result showed that purse seine slerek more productive than purse seine gardan, could be seen from several factors of productivity showed the greater result in productivity per trip, productivity per crew, productivity per GT, and productivity per PK. While for productivity per fuel and productivity per cost, showed that purse seine gardan was more productive than purse seine slerek because operational costs of purse seine gardan were more little every day

The Factors Wich Relate to the Quality of River Batang Ayumi in Kantin on Nort Padangsidimpuan, Padangsidimpuan 2013

Batang Ayumi River is a river that flows through the Padangsidimpuan city. In Kantin Village are people living on the banks / river banks. This has the potential to affect the water quality of the river Batang Ayumi caused domestic waste (BPS, 2008). The research aims to study the behavior (knowledge, attitude, practice), the culture and the role of community leaders the Kantin village regarding respondent characteristics, Rod Ayumi river water quality before and after passing through the village canteen (BOD, COD, DO, Detergent, TSS, total Coliform and Colifecal) and relations between them. Types of analytic study with cross-sectional study design. Respondents are mothers who live right on the edge of the river Batang Ayumi numbered 64 people and the quality of the river water upstream and downstream in the Kantin Village. The results, there is a relationship between behavior, culture and assessment TOMA of water quality Batang Ayumi which chemical parameters (BOD, COD, DO, Detergents), physics parameter (TSS), microbiological parameters (total coliform and Colifecal). The behavioral significance of the parameter values ​​chemistry, physics and microbiology is p = 0.003 (P <0.05), the culture with chemistry parameter, physics parameter, and microbiology parameter is p = 0.016 (P <0.05), with an assessment of the parameters TOMA chemistry parameter, physics parameter, and microbiology parameter is p = 0.002 (p <0.05). For government and community leaders is recommended to keep water quality of Batang Ayumi river by providing information through counseling and strict rules about building permits. For society is expected to care and comply the regulations of water-quality

Optimasi Biaya dan Waktu Jalur Angkutan Kota (Angkot) Malang dengan Metode Ant Colony Berbasis Perangkat Android

Kota Malang memiliki beberapa sebutan seperti Kota Pendidikan dan Kota Wisata. Disebut sebagai Kota wisata karena  terdapat  peninggalan-peninggalan  bersejarah  yang  masih  terjaga  sehingga  banyak  wisatawan dalam maupun Luar Negeri dan disebut sebagai Kota Pendidikan karena terdapat banyak perguruan tinggi aktif di Kota Malang  dan  beberapa  diantaranya  menduduki  peringkat  terbaik  di  Indonesia.  Tidak  sedikit  wisatawan  dan mahasiswa  baru  ingin  berkeliling  Kota  Malang,  bagi  mereka  yang  baru  pertama  kali  berkunjung  ke  Malang membutuhkan  informasi  tentang  angkutan-angkutan  apa  saja  yang  harus  dinaiki  serta  jalur mana yang akan dilewati. Pada penelitian ini dikembangkan sebuah aplikasi dengan menggunakan metode ant colony atau koloni semut,  yaitu  sebuah  metode  yang  meniru  perilaku  semut  dalam  mencari  sumber  makanan dan kembali ke sarangnya dengan secara alami mampu menemukan rute terpendek. Semut yang melewati rute terpendek akan meninggalkan aroma pheromone yang lebih tajam dan aroma tersebut akan diikuti oleh semut-semut yang lain menuju  makanan.Hasil  dari  penelitian  ini  adalah  metode  ant  colony  dapat  diterapkan  dalam  aplikasi  ini  yaitu untuk  mencari  rute  angkutan  kota  Malang  dengan  perhitungan  pada  waktu  tempuh  dan  biaya  yang  harus dikeluarkan  oleh  penumpang.  Hasil  pendapat  responden  menunjukkan  80%  menyatakan  bermanfaat  dan  80% menyatakan mudah digunakan

Can Student Assessment Sheets Replace Observation Sheets?

Observation is argued as the most suitable technique to assess the execution of authentic assessment. Unfortunately, it requires great amount of time and money. We need an alternative. Therefore, the purpose of this study was to develop an instrument in the form of a student assessment sheet on the implementation of authentic assessments in Mathematics subjects. This research is a development research that uses standard procedures for developing instruments. The result of the analysis with Aiken's formula showed that every item of the instrument was in a good category. The result of the analyses using Exploratory Factor Analysis (EFA), Confirmatory Factor Analysis (CFA), and Multitrait-Multimethod showed that the instrument had good construct validity. The result of reliability estimation using Cronbach Alpha (α) also showed that the instrument was in the reliable category. Thus, it can be concluded that the instrument in the form of student assessment sheets for assessing the implementation of authentic assessment in junior high school Mathematics learning is highly valid and reliable, which means that the developed instrument can replace the equivalent observation sheet

Seroepidemiological surveillance, community perceptions and associated risk factors of malaria exposure among forest-goers in Northeastern Thailand.

Malaria remains a major public health challenge in Thailand. Continuous assessment and understanding of the behavior and perceptions related to malaria exposure in the high-risk group are necessary to achieve the elimination goal. This study aimed to investigate the parasite prevalence, seroprevalence rate, knowledge, attitudes, and practices (KAP), and malaria risk factors in rural communities living close to a forested area in the northeastern part of Thailand. A community-based cross-sectional survey was conducted in three forest-goer communities (i.e., Ban Khok, Ban Koh, and Dong Yang) located in Khamcha-i district, Mukdahan Province, Thailand, from July to August 2019. Demographic, socioeconomic information and KAP data were collected using a structured questionnaire. Parasite prevalence was determined by microscopy. Seroprevalence was determined via ELISA using two Plasmodium falciparum (PfAMA-1 and PfMSP-119) and two Plasmodium vivax (PvAMA-1 and PvMSP-119) antigens. Age-adjusted antibody responses were analyzed using a reversible catalytic model to calculate seroconversion rate (SCR). Malaria parasite was not detected in any of the 345 participants. The overall malaria seroprevalence was 72.2% for PfAMA-1, 18.8% for PfMSP-119, 32.5% for PvAMA-1, and 4.4% for PvMSP-119. The proportion of seroprevalence for P. falciparum and P. vivax antigens was significantly highest in Ban Koh (35.1%, P < 0.001) and Don Yang (18.8%, P < 0.001), respectively. For all parasite antigens except PvMSP-119, the proportion of seropositive individuals significantly increased with age (P < 0.001). Based on the SCRs, there was a higher level of P. falciparum transmission than P. vivax. Regarding KAP, almost all respondents showed adequate knowledge and awareness about malaria. Nevertheless, significant effort is needed to improve positive attitudes and practices concerning malaria prevention measures. Multivariate regression analyses showed that living in Ban Koh was associated with both P. falciparum (adjusted odds ratio [aOR] 12.87, P < 0.001) and P. vivax (aOR 9.78, P < 0.001) seropositivities. We also found significant associations between age and seropositivity against P. falciparum and P. vivax antigens. The data suggest that seroepidemiological surveillance using AMA-1 and MSP-119 antigens may provide further evidence to reconstruct malaria exposure history. The absence of weak evidence of recent malaria transmission in Mukdahan Province is promising in the context of the disease elimination program

Naturally acquired antibody response to Plasmodium falciparum and Plasmodium vivax among indigenous Orang Asli communities in Peninsular Malaysia

Malaria remains a public health problem in many parts of the world. In Malaysia, the significant progress towards the national elimination programme and effective disease notification on malaria has resulted in zero indigenous human malaria cases since 2018. However, the country still needs to determine the extent of malaria exposure and transmission patterns, particularly in high-risk populations. In this study, a serological method was used to measure transmission levels of Plasmodium falciparum and Plasmodium vivax among indigenous Orang Asli communities in Kelantan, Peninsular Malaysia. A community-based cross-sectional survey was conducted in three Orang Asli communities (i.e., Pos Bihai, Pos Gob, and Pos Kuala Betis) in Kelantan from June to July 2019. Antibody responses to malaria were assessed by enzyme-linked immunosorbent assay (ELISA) using two P. falciparum (PfAMA-1 and PfMSP-119) and two P. vivax (PvAMA-1 and PvMSP-119) antigens. Age-adjusted antibody responses were analysed using a reversible catalytic model to calculate seroconversion rates (SCRs). Multiple logistic regression was used to investigate factors associated with malaria exposure. The overall malaria seroprevalence was 38.8% for PfAMA-1, 36.4% for PfMSP-119, 2.2% for PvAMA-1, and 9.3% for PvMSP-119. Between study areas, the proportion of seropositivity for any P. falciparum and P. vivax antigens was significantly highest in Pos Kuala Betis with 34.7% (p &lt; 0.001) and 13.6% (p &lt; 0.001), respectively. For all parasite antigens except for PvAMA-1, the proportion of seropositive individuals significantly increased with age (all p &lt; 0.001). Based on the SCR, there was a higher level of P. falciparum transmission than P. vivax in the study area. Multivariate regression analyses showed that living in Pos Kuala Betis was associated with both P. falciparum (adjusted odds ratio [aOR] 5.6, p &lt; 0.001) and P. vivax (aOR 2.1, p &lt; 0.001) seropositivities. Significant associations were also found between age and seropositivity to P. falciparum and P. vivax antigens. Analysis of community-based serological data helps describe the level of transmission, heterogeneity, and factors associated with malaria exposure among indigenous communities in Peninsular Malaysia. This approach could be an important adjunct tool for malaria monitoring and surveillance in low malaria transmission settings in the country

Evidence of Submicroscopic Plasmodium knowlesi Mono-Infection in Remote Indigenous Communities in Kelantan, Peninsular Malaysia

Malaysia has maintained zero cases of indigenous human malaria since 2018. However, zoonotic malaria is still prevalent in underdeveloped areas and hard-to-reach populations. This study aimed to determine the prevalence of malaria among remote indigenous communities in Peninsular Malaysia. A cross-sectional survey was conducted in six settlements in Kelantan state, from June to October 2019. Blood samples were tested for malaria using microscopy and nested polymerase chain reaction (nPCR) targeting the Plasmodium cytochrome c oxidase subunit III (cox3) gene. Of the 1,954 individuals who appeared healthy, no malaria parasites were found using microscopy. However, nPCR revealed seven cases of Plasmodium knowlesi mono-infection (0.4%), and six out of seven infections were in the group of 19 to 40 years old (P = 0.026). No human malaria species were detected by nPCR. Analysis of the DNA sequences also showed high similarity that reflects common ancestry to other P. knowlesi isolates. These findings indicate low submicroscopic P. knowlesi infections among indigenous communities in Malaysia, requiring PCR-based surveillance to support malaria control activities in the country