Judul: An Analysis of The Existence and Handling Priority of Regency Road Section for Regional Development Purposes in The North Tapanuli Regency
Abstrak: Jalan sebagai jaringan transportasi darat merupakan bagian unsur fundamental dalam perencanaan pengembangan wilayah. Kabupaten Tapanuli Utara memiliki jalan kabupaten sepanjang 1.222,01 km yang terbagi menjadi 194 ruas. Keterbatasan dana dalam penanganannya menyebabkan perlunya menentukan wilayah dan ruas jalan kabupaten yang dianggap prioritas penanganannya dengan memperhatikan hirarki wilayah, potensi sektor pertanian pada setiap wilayah yang menjadi sektor andalan di Kabupaten Tapanuli Utara dan pendapat stakeholder dalam mengatasi permasalahan penanganan ruas jalan kabupaten di Kabupaten Tapanuli Utara., Road as the land transportation network is part of a fundamental elements in planning of regional development. North Tapanuli Regency has 1.222,01 km regency road which is divided into 194 sections. However, due to limited available fund, need to determine regency road section that are considered priority by observing hierarchy region, potency of agricultural sector in each region and opinions of stakeholders in addressing the issue of handling the regency road in North Tapanuli Regency.
Keyword: North Tapanuli, regency road, regional development

Judul: Road Network Analysis and Handling Priority for Regional Development in Tana Toraja District
Abstrak: The availability of transportation infrastructure connecting cities with production centers provides opportunities and stimulates regional growth and economic development. Regional economic growth can be further accelerated if supported by transportation services that run smoothly, of adequate capacity, and accessible to the entire region. Tana Toraja District has a mobility index that exceeds the minimum standard for services in public works and spatial planning based on Regulation of Minister of Public Works No.14/PRT/M/2010, and therefore should focus its road transportation services through improving existing road networks, not through construction of new roads. With the multitude existing roads that the Tana Toraja District Government must manage with limited budget, a road network planning priority is needed to ensure effective allocation and use of the limited budget for Tana Toraja District development, especially in the road network sub-sector. This study attempts to provide an alternative solution for the Tana Toraja District Government in planning priority road networks for future regional development. This study aims to: (1) Obtain conformance between road networks and potential roads in Tana Toraja District, (2) Obtain regional growth level in Tana Toraja District, (3) Construct stakeholders’ perception of road network handling in Tana Toraja District, and (4) Compile and determine road network handling priority in Tana Toraja District. The methods employed in the study are descriptive analysis, Scalogram analysis, Analytical Hierarchy Process (AHP), and logical synthesis. Results show that the highest regional potential based on population density are Makale and North Makale Sub-Districts, while the highest regional potential based on agriculture production are Mengkendek Sub-District as the greatest rice producer and Bonggakaradeng Sub-District as the greatest non-rice crops (palawija) producer. For regional development, Makale and North Makale Sub- Districts are ranked as hierarchy I areas as center of services; Gandangbatu Sillanan, Sangalla, Kurra, Bonggakaradeng, and Mappak Sub-Districts are ranked as hierarchy II area as sub-center of services; and South Makale, South Sangalla, North Sangalla, Mengkendek, Rano, Simbuang, Rembon, Rantetayo, Saluputti, Malimbong Balepe, Bittuang, and Masanda Sub-Disctricts are ranked as hierarchy III as hinterlands. Based on stakeholder perception, regional potential based on tourism objects are the priorities in determining road network priority in Tana Toraja District. Road networks that are priorities in regional development planning in Tana Toraja District are divided into two alternatives: (1) Batupapan – Rantekurra, Passobo – Kondodewata, Kokkang – Buakayu, Tetebassi – Kondoran, and tourism ring road network; and (2) Makale – Kaduaja, Batupapan – Rantekurra, Passobo – Kondodewata, Kokkang – Buakayu, Tetebassi – Kondoran, , and tourism ring road network. The construction of one of these alternative road networks will facilitate the flow of people, goods, and services which will accelerate regional economic growth. Accelerated regional economic growth will stimulate the growth of other sectors. In turn, a good, functional relationship between regional center and hinterlands will be created and will mutually support the development of these areas.
Keyword: priority, regional development, road network, Tana Toraja

Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell